On 2019-02-23 12:03:23, user Vanessa Ribes wrote:
Dullard attenuates Smad activity in cardiac crest cells and thereby controls the tempo of their aggregation! Well done @DarriJf, @cadotbrun!
On 2019-02-23 12:03:23, user Vanessa Ribes wrote:
Dullard attenuates Smad activity in cardiac crest cells and thereby controls the tempo of their aggregation! Well done @DarriJf, @cadotbrun!
On 2025-10-21 00:06:41, user CDSL comment wrote:
It’s a really well-designed study with clear logic and strong experimental support. First, the authors nicely identified the key mechanism of attenuation — an early and strong IFN-? response that limits measles virus replication. I also like how they combined in vivo and in vitro experiments, which makes the findings much more convincing. And finally, the study not only explains why the measles vaccine is safe and long-lasting, but also gives useful insights for designing new live or IFN-sensitive vaccine platforms.
That said, there are still a few details that could be improved. For example, in Figure 1a–b, it’s not very clear why the authors only used TECs and PBMCs as models instead of including other cell types. It’s also not explained why they only collected the supernatant from TECs but measured both the supernatant and cell fractions in PBMCs. In Figure 4, the macaque experiment only shows viral RNA and cytokine changes in BAL and PBMCs, but lacks tissue-level analysis like immune cell infiltration or histology. Lastly, the study doesn’t really discuss the adaptive immune response, which is important since long-term immune memory is a major feature of the measles vaccine.
Overall, I think it’s an excellent paper with strong data and meaningful findings, but there are still some details that could be clarified or expanded to make it even stronger.
On 2020-12-29 02:45:36, user P. F. wrote:
* convalescent
On 2020-08-02 20:52:11, user Raghu Parthasarathy wrote:
I think I'm missing something important in this paper; perhaps you can clarify. The paper claims to show "how sleep may affect amyloid ? fibrillization." However, what is actually given is (1) a model of how the production rate of soluble amyloid ? influences the amounts of fibrillar vs. soluble A? and (2) a statement that *if* sleep alters the production rate of soluble amyloid ?, it will alter fiber formation. Obviously, this doesn't support the claim made in the title, and so I wonder if I'm missing something -- perhaps there's strong evidence in measurements reported elsewhere that sleep alters soluble A? production? Otherwise, one could just as easily rewrite the paper to state "... how bananas may affect amyloid ? fibrillization" by positing without evidence a connection between bananas and soluble A? production. I assume I'm missing something, since this seems like such a strong issue.
On 2021-06-10 07:58:52, user Matt Springer wrote:
Erratum: In our paper's bioRxiv version and initiually published journal version, the graph in Figure 4 erroneously listed Y axis units as ng/dl instead of the correct ng/ml. The pdf for download at Tobacco Regulatory Science has been corrected. The authors regret the error.
On 2021-04-21 20:58:51, user Jess wrote:
Heads up that in figure 4 description you say " rs4801117-A shows greater activity with ATRA treatment while the G allele is unaffected" but the image has a C allele
On 2025-01-16 12:43:51, user abhinayramaprasad wrote:
Now published at https://doi.org/10.1093/nar/gkae1274
On 2020-03-27 16:45:50, user Sinai Immunol Review Project wrote:
This study harnesses bioinformatic profiling to predict the potential of COV2 viral proteins to be presented on MHC I and II and to form linear B-cell epitopes. These estimates suggest a T-cell antigenic profile distinct from SARS-CoV or MERS-CoV, identify focused regions of the virus with a high density of predicted epitopes, and provide preliminary evidence for adaptive immune pressure in the genetic evolution of the virus.
While the study performs a comprehensive analysis of potential epitopes within the virus genome, the analysis relies solely on bioinformatic prediction to examine MHC binding affinity and B-cell epitope potential and does not capture the immunogenicity or recognition of these epitopes. Future experimental validation in data from patients infected with SARS-CoV-2 will be important to validate and refine these findings. Thus some of the potential conclusions stated, including viral evolution toward lower immunogenicity or a dominant role for CD4+ T-cells rather than CD8+ T-cells in viral clearance, require further validation.
In the future, these findings may help direct peptide vaccine design toward relevant epitopes and provide intriguing evidence of viral evolution in response to immune pressure.
On 2021-08-16 15:57:24, user bric hard wrote:
Very Interesting.I did not expect the results! Take good care Joao...
On 2018-02-09 20:31:53, user Worded Densnow wrote:
Appreciate the authors openness to critiques and the detailed responses. After discussing this further with a colleague in a sister institute that is an expert on free flight assays like the wind tunnel I received the following advice, which I am paraphrasing for the authors to consider. <br /> - Wind tunnel assays showing flight towards odours have used a lot in moths, somewhat in mosquitoes and also in flies by us. Nearly all such wind tunnel assays are run in the duration of minutes, 10 min, 15mins, 30 mins at most. Also we do not consider the assay successful as an odor attraction unless there is a large fraction behaving (>50% animals, and at least 30%). A wind tunnel assay that lasts for several hours and seems to have such low participation would not "fly" with an investigation claiming attraction. If so few tracks are shown, are the rest of animals then actually avoiding it?.
An additional point about "natural environments, and natural behaviors." that is important to remember is that the only stimulus used that shows attraction is 5% CO2. This concentration I similar to a burning cigarette! In the natural environments of the fly this level is implausible. So can you say that at lower concentrations that are more naturalistic (0.1-3%), the authors are showing avoidance?
On 2017-08-01 21:24:31, user Chan Zhou wrote:
Our circular RNA detection toolkit AutoCirc is available online : https://github.com/chanzhou...
You are welcome to use it.
On 2016-06-28 02:36:50, user Vitas Anderson wrote:
Good academic review of this report available at: http://acebr.uow.edu.au/ind...
On 2023-07-20 19:55:47, user Madeleine Rostad wrote:
July 13th-15th at the 37th Annual Symposium of The Protein Society, ASAPbio conducted a series of 20 minute “Live Preprint Q&A” sessions. The following is a summary of our conversation with one of the authors of this preprint.
Dr. Lauren Porter's discussion focused on her research on the evolutionary selection of proteins that can assume different folds, particularly in response to stimuli. The key point of the preprint is the prediction of sequence features for fold-switching proteins, which undergo relatively dramatic secondary and tertiary structure changes. They specifically study homologs that switch from an alpha-helical to a beta-sheet state, a significant change. Their research suggests that fold-switching is not random but is evolutionarily selected, a finding that challenges current understanding in the field.
Dr. Porter’s favorite figure connects different sequence alignments with the helical and beta sheet structures, identifying positions in the alignment that make unique contacts to the beta sheet fold and the alpha sheet fold.
Dr. Porter is particularly interested in feedback on their argument that evolution selects for these proteins and makes them different. She acknowledged that some of the figures might be hard to interpret for different communities (e.g. evolutionary biologists might find some protein structure aspects confusing and some of the evolutionary insights to be obvious, whereas structural biologists might be surprised by some of the evolutionary biology). Looking forward, they plan to use these results to build on existing methodology to reliably predict two folds from one sequence. They hope to achieve this within the next year.
Dr. Porter also shared her thoughts on the preprinting system, discussing the complications around reviewing preprints and benchmarking against methods that have not yet been peer-reviewed. She also expressed how having more accountability in terms of commenting and making changes to preprints could elevate the scientific discourse.
This preprint presents a novel perspective on the evolutionary selection of fold-switching proteins. The community is encouraged to provide feedback, particularly on the argument that evolution selects for these proteins.
On 2020-07-25 01:15:30, user Alexis Rohou wrote:
The Fourier Shell Correlation (FSC) in Fig 4C, while indeed crossing the 0.143 threshold for the first time at 4.34 Å, strongly suggests that the corresponding reconstruction is likely uninterpretable beyond ~7 or 7.5 Å. At that resolution, the FSC falls off steeply, from ~0.9 to ~0.35, after which it oscillates and slowly decays towards 0.143. For reference, this suggests that the signal-to-noise ratio at resolutions finer than 7 Å is worse than ~0.5. I would encourage the authors to call this reconstruction's resolution at ~ 7 Å (or whatever the exact resolution at which the FSC falls off sharply). If they wish to call this a 4.34 Å map, they should show features of the map consistent with this claimed resolution, including separation between beta strands, and resolved bulky side chains (Phe, Trp, etc). As it is the figure is consistent with this being a ~ 7-8Å map
Similarly, the map presented in Fig 4B does not look like a 4.3 Å map - at that resolution, the pitch of the alpha helices should be well resolved and some side chains should also be visible. The accompanying FSC is also consistent with a ~6-8 Å map, even though (here also) the authors seem to have followed the "letter of the law" and used the 0.143 threshold correctly (I am assuming that independent half datasets were refined, or that high frequencies were not used during refinement).
The same cannot be said of Figure S7A, where the FSC curve actually crosses the 0.143 line at ~ 5.5 Å, after it fell off sharply around 8Å. Based on this curve, and on the appearance of the map as illustrated, I see no valid reason for the authors to claim a resolution of 4.4 Å.
In the first two examples, Fig 4B and C, the authors may be assumed to have used the standard tools the field offers to validate resolution, and yet have arrived at seemingly erroneous estimates. Assuming the authors followed best practice, this is a failure of the field to provide standardized resolution estimation methods which deal better with quasi-pathological FSC curves.
In Figure S7A, it appears the authors did not follow the normal course in estimating the resolution, which should have given them an estimate of ~5.5Å.
Either way, this reinforces the point that visual inspection of the final map remains an essential part of validating any resolution estimate in single-particle cryoEM reconstructions.
On 2020-07-26 16:56:23, user Yao Qing wrote:
Dear Dr. Rohou,
Thanks for pointing out our mistakes. We agree with your comments. We will fix the problems and describe it more accurately in the peer-viewed version.
Sincerely,
Qing Yao
On 2020-10-08 16:11:30, user André Müller wrote:
I have a question regarding the definition of true/false positives/negatives used in the paper.
Did I understand it correctly that you define the false positives as the number of false taxa (on level species, genus, etc.)?
So, if I had a million reads and 99.99% of them were mapped to the correct 11 taxa (for dataset D7) and the last 0.01% (=10,000 reads) were all mapped to incorrect taxa, the precision = TP/(TP+FP) would be 11/(11+10,000) = 0.0011 !
If that indeed is how your definitiion works, I think the resulting precision would be disproportionally affected by a minority of wrongly mapped reads and not be practicable. Wouldn't one only want look at the mappings with significant abundances?
I think using per-read statistics are much better suited and many/most other publications use these.
If one doesn't have per-read ground truth mappings, but only knows what species went into a sample, couldn't one use an aligner to find out which read belongs to which species and then compute TP,FP, etc. on a per-read basis? For synthetic datasets the per-read ground truth should be available anyway.
On 2019-03-25 18:28:16, user Jen Anderson wrote:
Interesting paper on an important and timely topic. It adds to the discussion of how best to generate a mutant using modern genome editing methods. You may be interested in checking out our publication in PLOS genetics, "mRNA processing in mutant zebrafish lines generated by chemical and CRISPR-mediated mutagenesis produces unexpected transcripts that escape nonsense-mediated decay". After finding two instances of nonsense-associated alternative splicing which skipped an exon but retained reading frame, we became interested in exon symmetry and asked whether zebrafish exons were symmetrical at a higher frequency than expected by random chance (across all coding genes) and found that zebrafish coding exons 2–10 had a 5.1% and 7.2% increase over chance (33.33%) in exons divisible by 3 (p-value < 2.2e-16). https://journals.plos.org/p...
On 2015-12-11 15:57:27, user Clive G. Brown wrote:
I am highly sceptical that gravity changes the operation of the chemistry which works on a very small scale and is driven by ion flow and diffusion - and there isn't enough data here to test that hypothesis fully yet anyway. There are lots of other things that might indirectly affect operation of the entire system, the simplest being that you had bad chips - but even so, given the amount of data, at this stage i'd be sceptical that the differences you have seen do not have simpler causes or are just statistically insignificant.
An interesting alternative might be instead, for example, take a MinION system that is operating normally from the start so providing a baseline, drop it from a tall building in a box, and continue to record the data. As I understand, the vomit comet is simply freefall in an enclosed space removing decelerating wind resistance. This drop experiment, whilst short lived, would at least provide an internal control for the setup, chip quality, buffers, operator etc and any changes in state from baseline 'normal' caused by the freefall itself could be seen against that. My bet, just a bet, is that there wouldn't be any changes to the data, in fact - Im thinking this is a helpful test we could do. Not least as we don't have a Vomit Comet.
A valiant effort nonetheless, and my suggestion would be overcome any operational obstacles to generating many more reads on a normal run caused by doing the set up in low G. Use of VolTRAX instead of tip and Gilsons (and humans) would remove the operator/liquid handling difficulties and any variance coming from it, again isolating the core system.
Even if there was a systematic effect on the operation of the sensing/chemistry itself, provided the overall S:N is preserved and we still have step wise movement of the DNA under a constant applied current - it is probably learnable and amenable to the same decoding methods used now, new methods would not be needed.
On 2022-09-06 09:30:00, user Prof. T. K. Wood wrote:
The seminal discovery of phage inhibition by the toxin/antitoxin Hok/Sok system should be mentioned herein given Hok/Sok was discovered 15 years earlier compared to those cited here and provided the mechanism that was confirmed by the Laub group 26 years later (ref 6). See doi: 10.1128/jb.178.7.2044-2050.1996 and https://journals.asm.org/do....
On 2020-04-10 13:24:08, user Sami S wrote:
I just read the paper: while the analysis is fine, they have used only one strain of sequenced genome from “India” and compared it to one each from US and other places. It is ignoring the fact that the virus is spreading from people traveling from many different places so it’s completely biased and shouldn’t be taken as any sign of “lower severity”.
On 2017-02-19 22:35:53, user James Lloyd wrote:
Exciting work. I was curious to see how confident you were that the repression of RBFOX2 by CELF2 was not through AS-NMD? Given how common a mechanism this is for splicing factor cross-regulation, this would be the obvious choice of repression and might be missed unless NMD inhibition is used.
On 2020-08-17 04:59:14, user Asher A. Miller wrote:
Given the desperation of people at the moment, I would like to point out that this paper says the compound does not have an effect below 0.05 ug/mL. The compound’s lethal dose has been estimated to be 0.02 ug/mL.
On 2022-02-25 14:02:39, user Minoo Rassoulzadegan wrote:
Our preprint is now published<br /> Abstract: https://www.mdpi.com/2218-2...<br /> PDF Version: https://www.mdpi.com/2218-2...
On 2021-10-15 14:52:22, user Laurent Thomas wrote:
Hi, interesting work, I was just wondering about the choice of the U-Net architecture, ie a segmentation network, while the final readout is actually classification (event in the image yes/no). Is there a reason why you chose a segmentation architecture over an image-classification architecture, was the latter not efficient ?
On 2021-03-17 23:56:31, user RawTaterTot wrote:
Finally found a purpose for Marmite!
On 2018-03-16 08:18:14, user Lewy Body Lab wrote:
Hi BioRXiv, our paper has finally been published, many thanks: https://www.nature.com/arti...
On 2018-02-05 13:30:25, user Danny wrote:
Published:<br /> https://www.nature.com/arti...<br /> doi:10.1038/nmeth.4533
On 2025-01-03 10:03:03, user Andreia Wendt wrote:
The final peer-reviewed version of this article is open-accessible here: https://www.nature.com/articles/s41467-024-55538-7
On 2020-01-12 23:28:09, user yochannah wrote:
Hey - just FYI - I went to the GitHub link in the preprint - the link doesn't work for <br /> github.com/optimusmoose/xflow - is it possible it's set to be a private repo? :)
On 2017-05-16 18:04:53, user Eric Fauman wrote:
Nice work and thanks for choosing to prepublish on BiorXiv. With such large cohort sizes and with molecular phenotypes it's not surprising to find p-values underflowing limits set by excel and some scientific computing languages. Still, it would be nice to have exact values. In table S6 there are 2 pvalues listed as "<1e-300". As in the INTERVAL Somascan project, it would be useful to have the real p-values.
On 2019-02-27 00:49:16, user Farrukh-Baig wrote:
Nice findings.... I could not find in materials and methods, for ytube experiments how did you inoculate nectars ? and most importantly how much volume did you use ? <br /> I've done similar work with beetles & found differential preferences (just like yours). But I've figured out the reason behind this.
On 2017-09-21 02:31:14, user Joe S. wrote:
Number of SNP’s due to filtering was reduced from p=645k to p=50k or p=100k while the training sample was n=453k after putting aside several sets of 5k as validation sample. Since n>p the problem is no longer undetermined. The nonlinear method Lasso+L1 is not needed anymore. One would think it suffices to do regular linear multivariate regression to solve y=Ax for p variables since n>p. Then using the validation sample one would start shaving off SNPs with the lowest betas until the point when correlation on the validation set begins to budge, i.e., start getting lower. A similar plot to the one form Figure 1 would be obtained except it would be constructed from right to left, i.e., the large number of hits to low number. This approach would be incomparably faster than the Lasso approach.
On 2025-03-07 06:28:05, user Collin Spangenberg wrote:
Well written paper, very intriguing in nature. Can’t wait to see it officially peer reviewed.
On 2020-02-06 15:55:26, user Tim Stuart wrote:
The first abstract sentence:
"The recent maturation of single-cell RNA sequencing (scRNA-seq) technologies has coincided with transformative machine learning methods to profile genetic, epigenetic, spatial, proteomic and lineage information in individual cells."
Has significant duplication with the first abstract sentence in a review by Stuart and Satija (2019, Nature Reviews Genetics):
"The recent maturation of single- cell RNA sequencing (scRNA- seq) technologies has coincided with transformative new methods to profile genetic, epigenetic, spatial, proteomic and lineage information in individual cells."
On 2017-04-11 07:55:52, user Devon Ryan wrote:
FYI, figure S1 is missing from the PDF. Anyway, excellent paper, this is a must read for those of us in core facilities.
On 2022-01-11 10:23:10, user Frank Kirchhoff wrote:
We appreciate the interest of Nader and colleagues in<br /> our study. However, we feel that they do not reflect our results entirely<br /> correctly. As described in our paper, we ran molecular dynamics analyses for the theoretical description of the interaction. These resulted in a distance between 3.6 and 4.2 angstroms between R403 in Spike and E37 in ACE2 and a strong interaction. Both the distance range and the strength agree with recent studies (Lim et al., Scientific Reports 2020; Williams and Zhan, J. Phys. Chem. B. 2021; Laurini et al., ACS Nano, 2021). The importance of this interaction was confirmed by mutating E37 (Fig. 3). Bix and colleagues propose that the various cell types used in our study may not express integrins. This might be<br /> the case. However, it implies that the up to 50-fold enhancing effect of the T403R change on Spike-mediated infection is not dependent on integrins. Altogether, our experimental data clearly support an important role of T403R in ACE2 interaction. Our results do not exclude the possibility that this alteration may also affect the interaction with integrins. Currently, however, this is just speculative. We would be happy to provide the authors with Spike constructs allowing experimental challenging of their hypothesis.
Best regards
Fabian Zech, Christoph Jung, Konstantin M.J. Sparrer and Frank Kirchhoff
On 2020-01-20 23:30:43, user Dylan Glubb wrote:
I'm a bit surprised that the largest endometrial cancer GWAS study to date (Nat Commun. 2018 Aug 9;9(1):3166. doi: 10.1038/s41467-018-05427-7) wasn't included in the analysis.
On 2020-03-14 17:28:55, user Michael Cohen wrote:
The in-frame CGGCGGGCACGT<br /> insertion in the Covid-19 genome adds RRAR to the boundary between the <br /> S1 and S2 regions of the spike protein sequence. This insertion is <br /> followed by a serine, which thus introduces RARS that functions as a proteolytic cleavage<br /> site in some group II coronaviruses (see footnote 25 in Rota et al., 2003). <br /> If functional, addition of such a cleavage site may enhance the entry of<br /> Covid-19 viruses into cells (Kam et al., 2009).
Rota et al., 2003 https://science.sciencemag....
Kam et al., 2009 https://journals.plos.org/p...
On 2016-02-02 06:02:24, user Erin P. Price wrote:
Hi Jason and team,<br /> Congratulations on the nice paper, and for getting NASP out there!<br /> Thanks too for comparing with SPANDx. It's great to see a comparison of SNP-calling pipelines from microbial genomes.<br /> Just a couple of quick corrections to make re: some of your SPANDx comments:<br /> - As of v2.7 (which was used in your study), SPANDx can be run without a resource manager. You just need to change this preference to NONE in the scheduler.config file.<br /> - SPANDx outputs more than .nex files. The .nex files are just the input files for phylogenetic analysis for PAUP/PHYLIP/RAxML.<br /> Well done again on what looks to be a good pipeline.<br /> Regards,<br /> Erin
On 2021-05-11 04:30:37, user Patrick Chambers wrote:
"Binding affinity between RH5 and basigin is weaker than the reported values for RBD and basigin (approximately 1uM for RH5 (22, 23) compared to 185 nM for RBD (9)) indicating that this assay should be sufficiently sensitive to detect the RBD-basigin interaction."<br /> These are dissociation constants. Affinity constant is the inverse, i.e., 1/1microM = 1/1000nM = 0.001 < 0.0054 (1/185nM). So far, so good.<br /> However, other sources indicate that CD147 affinity for RBD is 100 times weaker than that for ACE2, which ranges from 5-20 nM (dissociation) or 0.002 to 0.0005 for affinity. <br /> No evidence for basigin/CD147 as a direct SARS-CoV-2 spike binding receptor (11 Jan 2021)<br /> https://doi.org/10.1038/s41...<br /> So, RH5 appears to be an inadequate positive control.<br /> CD147/Spike RBD (micrograms/mL)<br /> https://www.rndsystems.com/...<br /> ACE2/Spike RBD (nanograms/mL)<br /> https://www.rndsystems.com/...
On 2018-03-29 03:50:47, user Matt Therkelsen wrote:
How did you measure ice thickness in the tomograms? Thanks!
On 2025-03-21 13:57:33, user Rubayet Elahi wrote:
Now published in EMBO Reports https://www.embopress.org/doi/full/10.1038/s44319-025-00420-w
On 2015-07-11 20:29:52, user Gene Regulation Info wrote:
Very nice article. I can add one of the reasons why submitting preprints to arXiv is still more popular in the physics community but not in biology. Many physical journals require authors to submit already pre-formatted manuscripts. These manuscripts look very similar to their finally published versions (two columns, figures incorporated in the text, etc). Thus the manuscripts are already in a very readable format and authors do not need to do additional work to reformat them to submit to a preprint server. Biological manuscripts are much less readable and printer friendly (single column, sometimes double space formatting, and the most inconvenient thing for the reader -- figures are not integrated in the text). I believe it would help if biological journals change their submission format to more human readable. With current technologies it does not really make any difference for the journal production, but it does make a huge difference for self-archiving.
On 2017-05-16 00:37:16, user Maintenance Renegade wrote:
Uh...so what he's saying is that IQ difference correlates with observable patterns of or differences in neurological architecture? Am I getting this right? I don't understand most of this because I don't have any background or education in neuroscience.
On 2016-03-29 13:43:23, user Jonathan Jacobs wrote:
WOHOO! Hot damn! This is #madeofawesome.
On 2019-05-24 18:41:01, user Edgar Gonzalez-Kozlova wrote:
Very interesting!, I wonder if the definition of species for bacteria needs to be readjusted ?
On 2022-05-09 15:34:34, user Jenny wrote:
Very interesting pre-print! One thing I did not see was any discussion of 10X's recommendations on filtering the gtf file to only keep certain gene types: https://support.10xgenomics.... They did extensive modification of the gtf file in their build steps (https://support.10xgenomics...{files.refdata_GRCh38.version}). Are all the improvements in your pre-print on top of these modifications or as compared back to the original gtf file from Ensembl/Gencode?
On 2021-03-04 19:11:51, user James Gorley, PhD wrote:
It's perhaps not surprising the authors chose to release their paper as a preprint based on their conclusions. I'm wondering if this study took into account whether the preprint and associated publication were altered significantly? In many cases the content, data, and analysis of the preprint might be substantially different from the final published piece because of multiple revisions. Should this count as a confounder?
On 2024-01-10 09:51:21, user Todd Vision wrote:
The peer-reviewed version is available at Journal of Evolutionary Biology 36, 1525-1538, https://doi.org/10.1111/jeb.14224
On 2017-04-04 07:18:22, user Martin Smith wrote:
You should consider benchmarking on data from synthetic RNAs in addition to the human reference transcriptome. Check out www.sequin.xyz, it has free Illumina data you can access for such ventures.
On 2025-10-24 14:54:31, user Ameet Shetty wrote:
is there a supplementary data file with this article?
On 2016-08-11 05:48:19, user Bill wrote:
How is p = .017 a modest effect of location on mortality (see Table 2). Indeed, contrary to the authors claim, living at Chimp Haven or Southwest has a poor prognosis for survival.
Also with 6 variables (really only 3) and a N > 700, why adjust alpha to p < .01? Seems like the author had more than adequate power to avoid Type I error
On 2017-10-29 00:31:45, user Sergio Farias wrote:
I'm glad that scientist are studying these types of drugs. We'll see what further studies will show the research community.
On 2018-10-09 18:45:29, user Benjamin Harris wrote:
The github link does not work. It gives a 404 Error, repo doesn't exist
On 2023-05-17 05:15:51, user Michael Forrest wrote:
I've reported this relationship form before. <br /> See Figure 11 (on Page 37) of my bioRxiv preprint: https://www.biorxiv.org/con...
On 2018-02-22 08:33:02, user Guy Eyal wrote:
To run and download the human cortical neurons models in modelDB, use the password: eyal2018.<br /> Your comments and suggestions are very welcome.
On 2020-04-29 14:54:33, user Isaac Martínez wrote:
It's a very interesting approach, I'm curious to know if the code is available on github.
On 2021-02-06 18:28:13, user Uli Wellner wrote:
very interesting concept. how do you rule out the opposite theory ie duodenal / ampullary carcinoma invading the pancreas and switching to pancreatobiliary type ?
On 2021-03-14 04:26:53, user Aripuanã Watanabe wrote:
Dear Dr. Lopez-Rincon
I hope you are well
I performed an alignment test (MEGA software) with some of the primers described. There were few sequences analyzed, obtained from the GISAID database. Some sequences from Europe, USA and South America deposited in the first half of 2020.
There was a complete alignment between the primers and these sequences. Apparently they were not of the 3 variants described (B.1.1.7, B.1.351 and P.1).
I would like to ask if this type and analysis I performed is correct or if you would have any suggestions for another type of analysis?
I ask because I am considering buying these primers for testing.
Thank you very much
Best Regards,
Aripuana Watanabe
On 2020-02-28 19:47:54, user Timothy M Freeman wrote:
This article has been accepted for publication by Genome Research in the March 2020 edition and will become available online in March 2020 at http://www.genome.org/cgi/doi/10.1101/gr.255349.119.
On 2020-03-31 11:07:28, user James Kirchner wrote:
Interesting study, and a valiant effort at a hard problem.
it is worth noting, though, that the conclusion that peer review doesn't add much to the quality of published papers is vulnerable to two well-known biases (selection bias and survivor bias) which are barely mentioned.
The study can only consider papers that were posted as pre-prints, which might be better than the typical submissions that go to journals (selection bias). In other words, journals may receive lots of weak papers that are rejected during peer review, but unless those weak papers are also posted to pre-print servers, they will never be evaluated in this study. Anecdotal discussions I've had with editors suggest that a large fraction of journal submissions are "dead on arrival", implying that the editorial/peer review process is, in fact, greatly improving journal quality by keeping some of the dreck out.
In addition, the paired-sample comparisons can only consider papers that were posted as pre-prints, and were ultimately published somewhere (survivor bias). Those that were culled out by the peer-review process (or that were never submitted at all) will not appear in these comparisons.
These biases are unavoidable, and while they don't invalidate a study of this kind, they do limit the inferences that should be drawn. In particular, the inference that peer review doesn't improve the quality of science is inconsistent with our everyday experience that merely the expectation that our work will be subject to peer review forces us to be more careful than we might have been otherwise. How many of us have had to tell a grad student, "look, I know you *believe* that, but you the data don't *prove* it so it won't get through peer review"?
The checklist approach used in this study has obvious limitations as well, which the authors briefly discuss but have been largely lost in the subsequent media commentary. This study focuses on whether certain formal items have been documented, but not on the essential question of whether a paper makes sense: do the data justify the conclusions? I have reviewed dozens of papers that suffered from gross methodological, logical, and even mathematical errors. These were detected and corrected through the peer-review process, but none of these issues would appear in the checklists used in this study.
Should preprints "be considered valid scientific contributions"? They are contributions (and potentially valuable ones), but their validity has been vetted only by the authors themselves, who have obvious conflicts of interest. By contrast, peer-reviewed papers have at least been vetted by (in the best case) independent editors and reviewers as well.
Neither process is perfect. But there is a reason by bioRxiv now displays a banner saying<br /> ______________________ <br /> "BioRxiv is receiving many new papers on coronavirus SARS-CoV-2. A reminder: these are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information." <br /> ______________________ <br /> There are crucial differences between the peer-reviewed literature and the blogosphere, whether or not those differences can be detected by studies like this one.
On 2022-11-02 18:28:17, user Paul Robbins wrote:
I have some concerns about the attribution of many of the gene alterations that were proposed to have resulted from RNA editing. When the changes were evaluated in our tumor samples it appears that multiple changes resulted from incorrect mapping of the sequence reads. For example, the PHF2 variants, which occurred at the first 2 bases of intron 16, corresponded to the first 2 bases of exon 17. These are visible in IGV when soft clipping is turned off, and the first 5 bases that were proposed to be intronic also matched the first 5 bases of exon 17, which is indicative of the problem of mapping RNA-seq reads properly. This was not true of all of the changes, as the G>A changes in NEIL1 mapped to exonic sequences, but we also have transcriptome data from matched normal tissue samples from 1 of our patients where expression of these variants was observed. This is another issue that has not to my knowledge been adequately addressed, as normal tissues express ADAR, indicating that these changes may not be tumor-specific. Finally, there is the issue of the high error rate of reverse transcription, which may not occur equally at all sites. This is a problem that is not easy to resolve, unless these changes are directly probed, which would seem like a good way of potentially validating these changes.
On 2021-03-25 02:01:48, user Charles Warden wrote:
Hi,
Thank you for posting this preprint.
If I look at the provided FPKM values for GSE113957, they are all small for NM_021804 (ACE2|ACEH|-|Xp22.2|protein-coding).
I noticed a reference in the paper for downloading counts from GREIN, but I believe the values for ENSG00000130234 also tended to be small (mostly 0 and 1, with a maximum of 20).
If I look in the GTEx portal, there are some tissues with low ACE2 expression, but others that I think would end up with higher counts than reported in this study? I think that is also similar to the ACE2 FPKM expression in various tissues from NCBI Gene with double digit FPKM values in some tissues and essentially 0 expression in other tissues.
So, these are my questions:
a) Can you reproduce your finding in other datasets / tissues?
b) Is it possible that there might be some sort of confounding and/or not-optimal technical components?
For example, I thought the scale for the Chen et al. 2020 paper using GTEx data looked noticeably different for ACE2?
With the help of another individual, I think the Muus et al. 2021 paper might also provide references to some data that might be relevant (with both scRNA-Seq and bulk RNA-Seq).
Best Wishes,<br /> Charles
On 2021-10-24 02:45:04, user Ashlyn Blevins wrote:
This is an exciting study!!! I am very much looking forward to reading more of your work and about airDNA. This could be a great new way of biomonitoring. I am not very familiar with ecology field work and would like to know more about how you took your samples. The orange rings in figure 1 look quite large. Did you just walk around with your sampling apparatus, use a drone, etc? I also noticed that two samples of mole rat DNA were excluded due to cross contamination of tubing from prior use. Was the tubing in this experiment cleaned or changed between each sampling area or would the filters you used catch everything? Thanks for any insight - I am really looking forward to learning more! :-)
On 2021-10-25 08:35:03, user CDSL JHSPH wrote:
Dear Dr. Clare et. al.,
It is my pleasure to review your paper! Thank you for contributing to global terrestrial biomonitoring and ecological analysis. Using airDNA as a biomonitoring tool under natural settings show great potential. The decline in biodiversity throughout the world urges the development of non-invasive techniques that could offer rapid and accurate results. Your study successfully reveals the power of airDNA sampling at distance, and from my perspective, the new technique would truly revolutionize terrestrial biodiversity surveys.
My question would be, do you anticipate any difference of conducting airDNA sampling between zoo setting and real natural environment? As in the zoo, animals are gathering together and each kind of them have their own enclosures. While in the natural environment, animals will move more freely as there will be no space limit. Also, we know that some endangered species actually live under extreme conditions. For example, the weather might be extreme. Will the study results be influenced by extreme weathers?
Moreover, I am wondering if we need more intermediate steps to shift from zoo setting to actual field as zoo setting can evoke less complex behaviors and is still involved by human. Since we are aiming at non-invasive technique, what future steps could be done?
All in all, I think the paper makes significant contribution to the biomonitoring field, the methodology is quite convincing. I am just curious about the actual application of airDNA in the wild and the future plans regarding this study.
Thank you for your work and I am looking forward to future outcomes on this topic!
On 2022-12-16 16:49:43, user yuangaowang wrote:
From the author: the eccDNA methods has been published in Nature Protocol, more description and troubleshooting are included, please see:<br /> https://www.nature.com/arti...
On 2018-05-31 15:41:10, user Juan Mata wrote:
A great new method from the Lilley lab to investigate the RNAinteractome: cheaper, easier and more comprehensive (no need to purify polyadenylated RNA)
On 2020-02-14 09:50:30, user Thomas Höfer wrote:
This is a previous version of a paper that has appeared in eLIFE:<br /> https://elifesciences.org/a....
On 2020-06-23 07:26:55, user A scientist wrote:
This study has glaring methodological issues which should be raised during peer-review. It is unsurprising that the EPIC array detects more differential methylation since these results were not corrected for multiple comparisons. It is also unclear why an array-based method is still being used for comparison rather than reduced representation bisulfite sequencing (RRBS) or other sequencing techniques when these are widely available.
On 2024-11-18 13:40:44, user Min-Ho Nam wrote:
This manuscript has been published in Advanced Science.<br /> DOI: 10.1002/advs.202403245
On 2025-03-17 18:50:48, user Catherine Douds wrote:
Thank you so much for sharing this work, it’s a really great paper. My biggest criticism is that the methods section does not clearly define how the Ribo-seq and RNA-seq were aligned. Did you align with a different transcript or for each dataset? Or was there one transcript all data were aligned to? I’d love to see a more detailed methods section in the final version.
On 2019-11-26 00:18:45, user José H. Oliveira wrote:
Figure 4 is missing.
On 2023-01-26 09:44:19, user Juri Rappsilber wrote:
We discussed your manuscript in our lab and enjoyed its balanced tone and inquisition of an important aspect of the search. Thank you for sharing your search parameters for xiSEARCH and as a developer of that tool I second your choice of parameters completely. However, to answer the question “STY or not STY?” your current search experiment seems insufficient to us for reasons detailed below, and we would like to suggest a number of controls and changes. When allowing either KSTY or KGVL you disregard an important element of link assignment based on the often-incomplete MS data. Indeed, the MS2 data often do not unambiguously assign the linked residue by neighbouring backbone fragments and the likely link site is chosen based on the predefined chemistry of the linker. Fig 2G is a nice example of this. Depending on what you define as chemical preference of the crosslinker, you either report S or G. In all those cases, any residue is equally likely based on the MS data and your linker definition determines the reported site. If STY are disregarded and the abundant GVL are pre-defined, obviously, they will be reported. To put this to an extreme, why do you not disregard K as a link possibility and only allow GVL? We would like to suggest a couple of changes to your experiment:<br /> (1) To determine if STY are targets of NHS crosslinkers, only evaluate sites that were reported unambiguously based on MS data, i.e, with neighbouring fragments. Maybe run a completely indiscriminate crosslinker and look for enriched amino acids. Open modification search analyses linear peptides which differ from crosslinked peptides in not having a second reaction step in a spatially confined setting. The first reaction of a crosslinker brings it into the protein, the second reaction takes place with a spatially proximal residue of appropriate chemistry. The second step can only be assessed by looking into crosslinked peptides.<br /> (2) To determine if the data support STY as well or as poorly as the chemically meaningless GVL, define a linker KSTYGVL to let STY and GVL compete. Note that xiSEARCH currently will take the more C-terminal residue in any ambiguity window and thus have some random component in link site assignment. If an ambiguity window contains a K near STY, xiSEARCH has a preference setting for K, though. Consequently, if a STY is reported in favour of a nearby K, there must be supporting MS2 evidence in the spectrum for this report. <br /> (3) Do the GVL linker experiment (no KSTY). I would expect you to find many crosslinked peptides, nearly all the same peptide pairs as with K or KSTY. <br /> (4) Do KYST versus KGVL and match the YST with the GVL peptides where the are the identical peptide matches and compare the score. Plot a 2D scatter plot with score(YST) versus score(GVL). My expectation is that you will have many equal scoring peptides (ambiguity window based on insufficient MS2 data) and many cases where the score(YST) will be larger. <br /> As a final note, link site assignment is currently an open issue of crosslinking, and you are right to point this out. Curiously, speaking to Jan Kosinski as a modeller, he did not care about link sites at all. Our own work on using photo-crosslinking (where link site assignment is even more problematic because of the wider reactivity) did not show difference in protein structure model quality using link sites with a +/- 5 residue scatter (PMID: 26385339). So far, it seems to be unclear if link site precision offers any structural value. I hope it does… albeit it might not, considering the length of NHS crosslinkers and the flexibility of proteins. From a mass spectrometry side, I would, nonetheless, prefer to see link sites reported with a measure of precision.
On 2016-11-26 13:53:07, user Sharif A. Mukul wrote:
Published article:
Pavel, M.A.A., Mukul, S.A., Uddin, M.B., Harada, K., Khan, M.A.S.A. 2016. Effect of stand characteristics on tree species richness in and around a conservation area of Bangladesh. Journal of Mountain Science, 13: 1085-109, doi: 10.1007/s11629-015-3501-2.
On 2015-08-27 12:48:09, user Karl Broman wrote:
The revised version just adds the supplemental figure and table.
On 2021-01-13 01:19:51, user Ross Wang wrote:
This preprint has been updated as a newer version and has been published at J. Am. Chem. Soc. A link between the preprint and the paper will be forthcoming
On 2020-06-09 08:00:41, user Nikolas Haass wrote:
Now published: Pigment Cell Melanoma Res, 2020 Jun 8. Online ahead of print. PMID: 32511882; doi: 10.1111/pcmr.12903
On 2023-11-23 09:17:21, user Julio Rodríguez wrote:
Peer-reviewed version published here: https://advances.in/psychol...
On 2019-10-02 00:00:24, user Bradley wrote:
Interesting article. I have a few questions: Does CCN not form a C-mannosylation as with other TSP1 domains, and if so could this contribute to the differences from the canonical TSP1 fold observed? How certain can you be that the refold has not shuffled the disulfides? If I were reviewing this paper, that's what I would want to know as far as validation. <br /> Any comment on why MAD was performed over MR? Maybe mention in methods?
On 2021-01-19 22:24:48, user Tauras wrote:
Very interesting work and a cool idea! However, I don't see much detail about the PRSs used. Knowing the trait heritability, variance explained by the PRS, and seeing a leave-k-out cross-validation would be very helpful in evaluating the the results. For example, maybe TB doesn't display a signal because there is little genetic variance or the PRS explains a small proportion of the genetic variance.
Furthermore, there's no discussion about population turnover which we know plays a major role in changing allele frequencies at the time scales that are being considered. Immigration into Europe during the early Neolithic may explain these effects, especially in how some PRSs appear discontinuous (the pre-neolithic line doesn't meet the post-neolithic line). Changes during the neolithic/modern times may also be driven by migration. I'd be very hesitant to say "adaptation" when it can be more parsimoniously explained by gene flow. Maybe it's possible to explicitly model ancestry proportions as well as time in the linear models?
On 2016-09-17 19:36:02, user Alan Kay wrote:
A revised and peer reviewed version of this paper is available at http://journal.frontiersin....
On 2021-08-19 14:35:18, user Meng Wang wrote:
We have recently reported that the Tn5-based epigenomic profiling methods, especially Stacc-seq and CoBATCH, are prone to open chromatin bias (https://www.biorxiv.org/content/10.1101/2021.07.09.451758v1). Rather than directly address this bias issue, the authors of Stacc-seq argued in this preprint that FC-I normalization (normalizing by input/IgG control) was better than FC-C (normalizing by background) for Stacc-seq etc. data analysis. Based on this, they claimed that our results had “a major analysis issue”. However, the truth is that we had already used both FC-I and FC-C normalization methods and both showed clear open chromatin bias for Stacc-seq and CoBATCH. The fact that our analyses demonstrating that CUT&Tag (5% FPR) showed much lower FPR than Stacc-seq (30% FPR) or CoBATCH (50% FPR) indicated that the high FPRs were not due to “artificially enhanced the relative enrichment of potential open chromatin bias”, but an intrinsic problem of Stacc-seq and CoBATCH. In our opinion, the preprint has several problems, which are detailed below.
The preprint ignored the fact that we had already used both FC-I and FC-C normalization methods. The authors assumed that we only used FC-C for Stacc-seq etc. (Fig. 1A in Liu et al.). However, in fact we used both FC-C and FC-I in our analyses. In Fig. 1c, d and Fig. S2 of our manuscript (Wang et al.), methods labeled with “with IgG” were results from FC-I normalization, and methods without such label were results from FC-C normalization. Importantly, results from both normalizing methods showed clear open chromatin bias for Stacc-seq and CoBATCH (Fig. 1c,d and Fig. S2 in Wang et al.).
The results of global H3K27me3 enrichment at the Polycomb targets in this preprint (Fig. 1C) was contradictory to their claim that using FC-C would cause “complete loss or dramatic reduction of enrichment at true targets for datasets generated by Tn5-based methods”. Fig. 1C of this preprint showed a clear H3K27me3 enrichment around the TSS of Polycomb targets compared to adjacent regions when using FC-C. The difference between results from FC-I and FC-C is caused by the y-scale. The fold change is a relative measurement, so the y-scale of different normalization methods is not directly comparable. If they set the y-scale of FC-C to 0~2, the enrichment pattern would be highly similar to that using FC-I.
The genome browser snapshots of several loci in a large scale (low resolution) could not demonstrate that the results from FC-I and FC-C normalization are globally different. This preprint provided several example loci (Fig. 1B and Fig. 2 in Liu et al.) to show that using FC-C would cause “complete loss or dramatic reduction of enrichment at true targets for datasets generated by Tn5-based methods”. However, showing browser view of very large regions are misleading as the resolution is too low. For genome browser display, the look of the signal track patterns depends on y-scale, x-scale and windowing and smoothing function. When viewing a very large region, the signals are sampled and aggregated by genome browser and are not the raw signals. Thus, the patterns may not reflect the real situation. Indeed, when zoomed-in to check these regions, we found the peak patterns from FC-I and FC-C normalization are highly similar. In addition, examples from several loci could not reflect the global pattern. The global enrichment shown in Fig. 1C of this preprint did not support their conclusion, as discussed in point 2.
In summary, our original analysis has already included the normalization method suggested by the authors of this preprint. Results from both normalization methods supported that Stacc-seq and CoBATCH had high open chromatin bias. In fact, the results from this preprint also support our conclusions. In Fig. 2 of this preprint, regardless whether FC-I, FC-C or RPKM were used, the discrete peaks from Stacc-seq etc. were more similar to ATAC-seq peaks, but were totally different from ChIP-seq peaks.
Meng Wang and Yi Zhang<br /> Howard Hughes Medical Institute, Boston Children’s Hospital, Boston, Massachusetts 02115, USA
On 2017-06-27 00:00:17, user Perseus Smith wrote:
Love it!
On 2020-02-23 11:17:23, user YIGUO ZHANG wrote:
This paper has been published in Antioxidants (Basel), 9 (1) 2019 Dec 19, entitled "<br /> Unification of Opposites Between Two Antioxidant Transcription Factors Nrf1 and Nrf2 in Mediating Distinct Cellular Responses to the Endoplasmic Reticulum Stressor Tunicamycin"<br /> PMID: 31861550 DOI: 10.3390/antiox9010004
On 2020-07-03 11:46:18, user Nick Pullen wrote:
It looks to me like Fig 15 a,b are the same as c,d
On 2024-10-19 19:13:36, user sam wrote:
It would be good to see how altered the phosphoproteome is after FACS. Thats a long time for the cells and a lot can change in phosphopatterns in a matter of seconds .
On 2016-07-13 06:03:33, user Chris Carter wrote:
A related paper using the same set of autism genes showed that many are related to barrier function (blood/brain, skin, intestinal) and to control of the respiratory cilia that sweep particles from the airways.
The Barrier, airway particle clearance, placental and detoxification functions of Autism susceptibility genes <br /> Neurochemistry Interational 99,42-51, 2016 http://www.ncbi.nlm.nih.gov...
On 2020-04-01 06:15:19, user Artem Nedoluzhko wrote:
Thank you for the interesting preprint, In my opinion, several words about sampling (i.g. about Second Fram Expedition) should be added. It will make the manuscript more informative. In another case, Figure 2C looks unclear for people, who don't know about the heroic history of Norwegian Arctic Expeditions. Good luck!
On 2016-01-13 20:43:25, user Natalie Davidson wrote:
In Figure 5b, you state that the green dots represent the removal of the UMIs. This would indicate that removing known PCR duplicates make the log-linear fit of TPM vs Molarity worse. Should the colors be switched in the plot?
On 2015-05-27 10:57:33, user kamounlab wrote:
This paper was cited in a Note added in proof in Suledo et al. New Phytologist 2015 http://onlinelibrary.wiley....
"Since this article was accepted, a commentary by Wu et al. (2015) was submitted for publication indicating that, despite findings that auto-active mutants of tomato NRC1 are able to induce programmed cell death in N. benthamiana (Gabriëls et al., 2007) and N. tabacum (this paper), mining of the N. benthamiana genome revealed no orthologue of NRC1. However, an NRC gene family has been identified in this plant species and at least one member of this family, NRC3, is involved in Pto-mediated cell death."
On 2016-05-28 15:00:29, user Marc RobinsonRechavi wrote:
The link given in the PDF to the availability (https://www.cs.bham.ac.uk/ szh/software.xhtml) does not seem to work. (Posted following tweet https://twitter.com/antifre... )
On 2019-04-17 13:17:39, user Daniel Louis Kiss wrote:
The final peer-reviewed manuscript is available through FEBS Letter's free access program.<br /> https://twitter.com/FEBS_Le...
On 2022-08-13 03:49:12, user Keshav wrote:
Please also see <br /> https://genomemedicine.biom...
On 2022-08-15 11:25:40, user Biró Bálint wrote:
Dear All,
Thank you very much for your comments. As you have correctly pointed out some of the references have been mixed up. This has been corrected and we uploaded a new version of our manuscript which would be available hopefully very soon.
Best regards,<br /> Authors
On 2021-12-23 08:11:40, user Gabriel Netsari wrote:
Hi, <br /> Both rs2032640 and rs546062461 are absent from IAM samples, therefore it is impossible to know if they are E-L19 or E-M81. Furthermore, IAM.05 is B-L1388 according to YSEQ Cladefinder.
Cordially.
On 2022-10-14 22:25:37, user charlesqzhou wrote:
Dear bioRxiv members, please note that the this preprint is now published in Interface Focus at https://royalsocietypublish...
On 2022-12-16 18:15:51, user Marco Gabrielli wrote:
Comment #2 by taylor.reiter:<br /> "k-mer signature differences "<br /> Would you be willing to briefly describe the size of k-mer used for this? I could imagine very different results for k-mer size of 4 (tetranucleotide abundances) vs. 21 or 31 (which are generally genus or species specific)
Response:<br /> K-mer-based eukaryotic identification tools use usually small k-mer abundances (generally 5-6, depending on the tool). Larger sizes would provide information too geni-specific probably confounding a demarkation between the two superkingdom. We will clarify this in the revised manuscript.
On 2021-11-24 04:45:24, user Tianyu Liu wrote:
Hi, do you have plan to upload your codes for Polarbear to github? Thanks a lot.
On 2020-06-12 15:05:28, user Sinai Immunol Review Project wrote:
Main Findings<br /> The manuscript describes a versatile mouse model of SARS-CoV-2 based on adeno-associated virus (AAV)-mediated expression of human ACE2 (hACE2). The AAV-hACE2 model supported productive SARS-CoV-2 infection in the lung of mice, inducing leukocyte recruitment and mounting antibody response (IgG) against the spike (S) protein. Serum obtained from AAV-hACE2 infected mice at 7 and 14 days post-infection with SARS-CoV-2 showed neutralization activity in vitro. RNA sequencing analysis-data reveal up-regulation of cytokines and interferon-stimulated genes (ISGs) signatures, compared to control mice. Neither type I nor type II, nor type III interferons were up-regulated, indicating a resemblance with published data from the lungs of patients infected with SARS-CoV-2 (Blanco-Melo et al., 2020). To further explore the role of type I interferon signaling in SARS-CoV-2 infection, interferon-alpha receptor deficient (IFNAR-/-) and interferon regulatory transcription factors (IRF) 3 and 7 double deficient (IRF3/7-/-) mice were transduced with AAV-hACE2 and infected with SARS-CoV-2. The analysis demonstrated a decrease in interferon stimulated gene (ISG) response in the IFNAR-/- and IRF3/7-/- mice relative to wild type mice. However, there was a similar kinetics of viral clearance in type I interferon deficient and wild type mice, suggesting that viral SARS-Cov-2 replication is resistant to interferon signaling. The authors concluded the AAV-hACE2 infected SARS-CoV-2 model largely recapitulated the transcriptome changes observed in the lungs of SARS-CoV-2 infected patients.
Limitations<br /> The results shown by the authors suggest that the hACE2-AAV mouse model of SARS-CoV-2 infection generates symptoms that partly resembled human infection symptoms. However, cellular and tissue tropism of SARS-CoV-2 in infected mice or different susceptibility to the infection based on gender or age were not explored. Additionally, because no deaths of infected mice were reported, the model does not fully reflect the pathogenesis of SARS-CoV-2 as in other transgenic models. Future studies with this model should interrogate SARS-CoV-2 infection based on mouse strain, gender, and age.
Significance<br /> The hACE2-AAV mouse model partially simulated the pathology of COVID-19 with a focused and robust lung SARS-CoV-2 infection and pathology. The hACE2-AAV mouse model will allow to test patient-SARS-CoV-2 derived-viruses in mouse strains with diverse genetic backgrounds and genetic alterations, as a platform to study pathological mechanisms and therapeutic strategies to combat COVID-19 disease.
Reviewed by Martinez-Delgado, G as part of a project by students, postdocs and faculty at the Immunology Institute of the Icahn School of Medicine, Mount Sinai.
On 2021-03-05 03:09:59, user ShengwenCalvinLiPhD wrote:
Large scale field production of organic farming, duplicated with 30 years of field studies, demonstrates the Effective control of a viral disease with a high transmission rate through selective predation
On 2024-09-24 16:44:20, user The Fehr Lab wrote:
These authors have done a fabulous job at creating new macrodomain inhibitors, which is extremely appreciated. However, having a major conclusion and an implication that Mac1 inhibitors are not antiviral based solely on negative data is misleading. We have published that a macrodomain inhibitor can inhibit virus replication (PMID: 38592023) and will have another story that will soon be available in BioRxiv that describes even more Mac1 targeting compounds that inhibit virus replication. There are some notable problems with the compound described here that could explain its lack of antiviral activity that should be taken into account. Again, I think the novel chemistry identified in this paper is exceptional, but more cautiousness should be taken before making broad claims that this is not a good drug target. Based on genetic data Mac1 and another recent paper on bioRxiv ( https://doi.org/10.1101/2024.08.08.606661 ), it appears that Mac1 is a suitable target for antiviral development, and we are continuing to work to see that dream come to fruition.
On 2025-04-18 17:51:29, user Franck Dumetz wrote:
I really like your work and I'm very interested to use your trained model on the organisms I work with. I did not do the experiment to measure reactivity on my organisms. I was wondering if the method use to determined the base reactivity mattered? I'm not set yet wether I'll be using DMS-MaP-seq or SHAPE-MaP-seq or if I will use ONT.
On 2020-05-02 21:24:55, user Bill Denney wrote:
The article linked to at the end of the sentence here does not refer to niclosamide. Is the a typographical error or are you drawing a more subtle comparison to parvinium? "Although niclosamide suffers a pharmacokinetic flaw of low adsorption, further development or drug formulation could enable an effective delivery of this drug to the target tissue"
On 2024-07-21 00:09:37, user Meet Zandawala wrote:
Manuscript title: TRP? regulates lipid metabolism through Dh44 neuroendocrine cells
Summary: This manuscript from Youngseok Lee lab examines the role of TRP gamma channel in regulating metabolic physiology. Specifically, it focuses on the regulation of lipid metabolism via DH44 neuroendocrine cells. It is a follow-up on the work from the same lab where they showcased the importance of TRP gamma in DH44 cells in regulating post-ingestive food selection (Dhakal et al 2022: https://doi.org/10.7554/eLife.56726 ). Overall, this work adds to the growing body of work on DH44 neuroendocrine cells which appear to be crucial internal metabolic sensors. We have a few major comments and suggestions on the preprint which could help clarify the mechanisms by which TRP gamma regulates lipid metabolism.
Minor comment:<br /> 1. Stock numbers for fly strains have not been provided.
Signed by,<br /> Meet Zandawala <br /> Jayati Gera<br /> (Zandawala lab members)
On 2024-08-18 14:42:36, user David Ron wrote:
That mutations abolishing kinase activity (e.g., GCN2 Lys619Ala) also render RAF inhibitors unable to activate the ISR in cells is a powerful argument that GCN2's kinase activity links application of RAF inhibitors to ISR activation.<br /> That the same mutations also abolish GCN2's responsiveness to RAF inhibitors in vitro is less helpful - a dead donkey does not respond to the buggy whip, whether applies its back or to its head. <br /> In this vein, interpreting the inability of RAF inhibitors to activate GCN2 when the gatekeeper residue Met802 is mutated (Figure 9) is key to the conclusion that these agents exert their effect on GCN2 by engaging its kinase active site ATP binding pocket.<br /> I may have missed it, but is there evidence that the Met802 mutations retain reasonable kinase activity? The Met802Phe is not so helpful in this regard as it may lack 'headroom' for further activation.<br /> It might be helpful to measure ISR activation in GCN2? cells, reconstituted with GCN2 Met802 mutants in response to histidinol. Preservation of a response to histidinol in face of loss of responsiveness to RAF inhibitors would lend strong support to the authors conclusion.
On 2025-01-06 16:49:33, user Mark Gasser wrote:
Now published at Journal of Microbial Biotechnology (Wiley) https://doi.org/10.1111/1751-7915.70064
On 2020-09-13 05:14:59, user Jin Yu wrote:
Inchworm stepping of Myc-Max heterodimer protein diffusion along DNA, Biochemical and Biophysical Research Communications, 2020 https://doi.org/10.1016/j.b...
On 2017-08-23 15:05:42, user Dorothy Bishop wrote:
This is a great use of Biobank data. Very little is known about the impact of trisomy X, especially in adulthood, and the data presented here on fertility and menopause are important. My only question concerns whether there is information on whether any of these women were aware of the trisomy. The paper notes that some of the Turner syndrome cases had a prior diagnosis, but does not mention this for trisomy X. If not, do we know whether Biobank would be likely to have recorded this information? Thanks.
On 2018-05-15 14:13:21, user Matthew Figley wrote:
You might consider citing our work that ALS-linked mutations in PFN1 alter stress granule dynamics - http://www.jneurosci.org/co...
On 2021-11-24 21:56:04, user Luis Carretié wrote:
This paper has been accepted for publication in Cerebral Cortex. The final version includes several changes suggested during the review process that are not present in this BioRxiv (initial) version.
On 2018-12-16 16:42:36, user David Freedman wrote:
WHO PHEIC ended in November 2016
On 2021-04-14 16:19:46, user Christophe Leterrier wrote:
This preprint seems to be missing a Methods section that is referred to multiple times within the text, as well as supplementary tables. It would be good to upload a complete manuscript as a new version, and/or use the supplementary files uploading option. Thank you
On 2022-08-03 20:51:43, user Fred Maxfield wrote:
This study focused on the role of TPP1 in degrading fibrillar ?-amyloid in microglia. In the course of a follow-up study, we were unable to reproduce the experiments showing differences in degradation of fibrillar ?-amyloid in microglia from wild-type and Tpp1(-/-) mice. We do not understand the reason for the difference, which may be the result of subtle differences in the preparation of ?-amyloid fibrils or culturing of the microglia.
On 2018-04-30 19:29:22, user Elizabeth Rucks wrote:
Hi Kevin,<br /> We have fully characterized and successfully adapted the<br /> Inc-APEX2 approach to map the inclusion membrane protein interactome, and we<br /> are happy to see our work is gaining some recognition, and that others are<br /> finding utility in the system!
As we have been working on and publishing on this topic and<br /> discussing it in various formats since 2014, we have validated both the APEX2<br /> and BioID (BirA*) proximity labeling systems to help us answer questions about<br /> the chlamydial-host interactome. We have found pros and cons to both systems.<br /> Interestingly, we have encountered many of your same protein hits, including<br /> those that you label ‘high confidence proteins’, and we have discounted many of<br /> those protein hits as background. My best advice is to take the time to<br /> carefully go through the controls for these types of studies.
Good luck,
Lisa Rucks
lisa.rucks@unmc.edu
On 2023-08-22 15:13:28, user Davide Trotti wrote:
This paper has now been accepted and published in iScience. Here is the URL link to the manuscript<br /> https://www.cell.com/iscien...<br /> Thanks<br /> D
On 2022-08-01 17:29:01, user Pooja Asthana wrote:
Summary:<br /> In this paper, the authors have employed Microcrystal electron diffraction (MicroED) to identify the positions of hydrogen atoms in hen egg-white lysozyme. The major success of the paper results from the continued improvement of MicroED data collection procedures: 35% of hydrogens contained in the structure can be visualized with visible hydrogen bonding networks and hydrogens on water molecules. They were able to locate more hydrogen atoms in the protein backbone than in the side chains owing to more rigidity of the backbone structure. They observe density for acidic side chain residues and their negatively charged side-chain carboxyl groups which are thought to be poorly resolved in single particle cryo-EM at moderate resolution. This observation is tantalizing, but incomplete. By our eye in Fig 2c the “right oxygen” in Asp18” is lower signal than the “left”. Presumably this indicates that the side chain is not protonated - and it is possible that there may be opportunities here to test the strength for “for negatively charged atoms at lower scattering angles” based on such differences in signal. Such an analysis would be very interesting (and potentially using different truncations of the data, truly test this model). The last section of the paper describes that the inter-nuclei distances are more accurate to determine the hydrogen bond lengths than the center of mass of electron clouds, which agrees with the analysis in Molprobity (Williams et al, Protein Science 2018). Comparison to X-ray (which occurs a bit in the discussion) and neutron data (e.g. https://pubmed.ncbi.nlm.nih... "https://pubmed.ncbi.nlm.nih.gov/35647923/)") on this point would be very interesting. Further missed opportunities include comparisons of the h signal strength to detection by neutron/X-ray and whether there are any trends that would connect with hydrogen-exchange measurements.<br /> Overall, the paper is concise and focuses on the observations enabled by the new data collection improvements, but misses opportunities to connect to other analyses on lysozyme (perhaps the best system to make such comparisons in!)
Following are some minor points that we would like to mention:
Minor points:
Abstract line 18: instead of “informing” it should be “information”
Line 61: “Here, hydrogen atoms were identified by omitting them from the model and inspecting the peaks in a calculated Fo–FC difference map following refinement in Servalcat based on crystallographic refinement routines implemented in REFMAC5 (Murshudov et al., 2011; Yamashita et al., 2021). Since resolution is a local feature in cryo-EM, the accuracy of hydrogen identification varies across the map.”<br /> There is some ambiguity in the way we read this. By “here” do the authors mean in the previous single particle EM work to high resolution outlined in the preceding sentences or their current manuscript? If they mean the preceding papers suggest starting the paragraph, “In those works,”; if they mean the current manuscript, the statement about resolution varying across the map needs a more full and nuanced explanation.
Line 91: “Lowering the total exposure also reduces the effects of radiation damage that can affect the structural integrity of the protein and the ability to localize hydrogen atoms”<br /> It would be interesting to test the radiation damage directly here, but maybe prohibitive across 16 crystals?
Line 110: ‘‘Nevertheless, these results are the most complete hydrogen bonding network visualized to date by macromolecular MicroED’’ <br /> The authors did a nice comparison of all the hydrogen bonds based on X-ray, MicroED and neutron diffraction. It would be worth mentioning if they were able to identify any new hydrogen bond position or network which was not previously reported, this would further connect to the other methods as mentioned above.
Line 127-128: ‘‘Interestingly, whereas the Asp52 and Gly54 N-H distances are close to the idealized positions, the difference peak for the Asn44 N-H is located at an almost equal distance shared between the donor and Asp52 carbonyl acceptor’’<br /> Which idealized positions are the authors referring to? idealized from the neutrons or X-ray or both? There may be settings in Phenix that allow this to be controlled (although REFMAC is used here).
Line 182/183: ‘‘The number of observations for some 183 bond types is insufficient for a rigorous statistical analysis’’<br /> The authors can mention which bond observations are significant and the observed bond length elongation. For example, C-H2 has the highest number of observations (99) with a deviation of 15. However, there is no mention for the apparent elongation of bond length in this case.
Figure 2d: Label the contour level for the 2 additional water molecules w1079 and w1005.
Figure 3: Legend needs explanation for MicroED curve too.
Supplementary Table 1: We understand that the overall crystal quality statistics are weak in the case of MicroED. However, the low completeness after merging 16 datasets is not entirely understood and perhaps deserves some comment here. Is there a preferred orientation on the grid that leads to a systematic problem in filling reciprocal space?
Pooja Asthana and James Fraser (UCSF)
On 2021-02-24 06:19:18, user AHMAD KASSEM wrote:
My colleagues and I have recently chosen your paper for our journal club. This paper was excellent to illustrate the use of Mass spectrometry in biomedical research. I think the new TIFF method is promising and could lead to a breakthrough in the realm of single-cell proteomics. Your group has done an excellent job in the overall presentation of data; however, I have a couple of suggestions that might strengthen this paper. Firstly, fig 3. (d) presents the pair-wise correlation of the ten cells using the TIFF method, but it has no control. I suggest you could show the pair-wise correlation for the ten cells analyzed with the standard method. Secondly, all the bar-graphs and violin plots except for fig.5 (d) were not analyzed for statistical significance. The lack of statistical significance analysis made it trickier to interpret the data, so I would suggest adding them wherever possible. Finally, your group mentioned the importance of applying both sc proteomics and sc-RNA sequencing to get the optimal results. I believe that including other methods such as RNA-seq or even traditional biochemical methods (i.e., Western blot or Flow cytometry) to provide further evidence to the results obtained by the TIFF method could dramatically increase the creditability of your results.
On 2025-08-26 09:31:03, user Constant VINATIER wrote:
Feedbacks about your preprint : https://doi.org/10.1101/2025.08.02.668124
About registration: <br /> We could not find any information about the pre-registration of your study in the pre-print. Pre-registration involves documenting the hypotheses, methods, and/or analyses of a scientific study prior to its conduct (10.1073/pnas.1708274114; 10.1038/s41562-021-01269-4). If your study was pre-registered, we strongly encourage you to include the registration number in the pre-print, ideally in the abstract make this important information easy to retrieve, as this practice enhances transparency and reproducibility. If the study was not pre-registered, this should be acknowledged as a limitation. For future studies, we recommend pre-registering on an appropriate repository.<br /> About Protocol Sharing: <br /> We did not find the protocol for your study. If you have one, we encourage you to share it as supplementary material or deposit it in a publicly available repository such as the Open Science Framework ( https://osf.io ) or Zenodo ( https://zenodo.org/) "https://zenodo.org/)") . You can then include a statement in the Methods section indicating that your protocol is openly available (e.g., 'The protocol for this study is available at (link)/ in the supplementary'). Sharing your protocol will help readers better understand your study and enable them to reproduce it if they wish to test it.<br /> About the Statistical Analysis Plan Sharing: <br /> We did not find the Statistical Analysis Plan (SAP) for your study. If you have one, we encourage you to share it as supplementary material or deposit it in a repository such as the Open Science Framework ( https://osf.io ). You can then include a statement in the Methods section indicating that your protocol is openly available (e.g., 'The SAP for this study is available at (link)/ in the supplementary'). Sharing your SAP will help readers better understand your study and enable them to reproduce it if they wish to test it.<br /> About Deviations and/or changes<br /> We could not find any information about potential deviations or changes to the protocol in your pre-print. Since such deviations are common, if this applies to your study, we strongly encourage you to include a subsection titled Changes to the Initial Protocol in the Methods' section and discuss these changes as a potential limitation of your results. If any deviations occurred during your study, please specify them in this new subsection.<br /> About Data sharing / FAIR Data<br /> We found insufficient information about your data sharing approach. Data should be findable, i.e. data are to assigned a globally unique and persistent identifier (for instance there is a DOI assigned to the dataset, or data are registered or indexed in a searchable resource). Data should also be accessible, i.e. data are retrievable by their identifier and can be accessed following an open, free, and universally implementable protocol. As your data id not sensitive data, we encourage you to share it openly on a data sharing repository (Dryad, etc.) and include the Digital Object Identifier (DOI) in the Methods section. If you want more information about good practices of data sharing, visit https://www.go-fair.org/ <br /> About Code sharing<br /> We could not find any information about your (statistical) code. Sharing code is important for enhancing transparency and reproducibility, especially since it does not contain sensitive information. We encourage you to openly share it on a code sharing platform (Github, Codepen, CodShare, etc.) and include the Digital Object Identifier (DOI) in the Methods section. If you want more information about Code sharing https://fair-software.nl/ .
On 2022-03-08 13:56:33, user Eugene M. Obeng wrote:
Line 1165: Do you intend to say Y510 instead of Y501?
On 2016-02-23 02:24:06, user Adam Roddy wrote:
Unless I'm missing something what is termed chi in this paper is equivalent to what we more normally call ci/ca. It's unclear to me why there needs to be a different variable name; this only obfuscates the message.
Also, on line 284 is referenced "The ratio of xylem repiration [sic] to transpiration capacity..." What is "xylem respiration"? Are xylem not predominantly dead cells? Or are you referring to the parenchyma?
On 2022-05-22 20:08:31, user Garth Kong wrote:
Sorry for the confusion, CITE-Viz is up now!
On 2024-07-16 19:03:57, user Zehua Zeng wrote:
* Published Article: OmicVerse: a framework for bridging and deepening insights across bulk and single-cell sequencing
* Link: https://www.nature.com/articles/s41467-024-50194-3#Ack1
On 2022-03-01 16:30:25, user Waylon J Hastings wrote:
Great work. I appreciate the use of real data to support thermodynamics based theories of aging. I would suggest adding a legend to Figure 3 and Figure 5 that that clarify the meaning of the differently colored lines prior to journal submission.
On 2025-10-30 16:29:52, user Maël Doré wrote:
This research is now published in Global Ecology and Biogeography. DOI: https://doi.org/10.1111/geb.70127 .
On 2017-10-28 16:48:02, user Lionel Christiaen wrote:
Student #7<br /> Prior to this paper, it was known that transcription factors (TFs) only stay bound for a few seconds before dissociating from DNA, and that low affinity binding sites are necessary for TFs to distinguish between binding sites with a similar sequence. The authors wanted to answer the question of how these brief TF contacts could allow for transcription from low affinity sites. They hypothesized that multiple low affinity sites could act together to “trap” TFs and create “microenvironments” with high TF concentration that would allow for transcription. To address this question, they used the svb locus in Drosophila which contains multiple distinct enhancers that have low affinity binding sites for Ubx. Techniques they used included: super-resolution confocal microscopy, FISH, immunofluorescence, and live imaging of specially prepped (~4x expanded) transgenic embryos.<br /> The authors first found that Ubx was localized to distinct regions of the nucleus that did not overlap with unrelated TFs, which suggested that Ubx is not localized by a general mechanism that limits the distribution of all TFs. They also showed that Ubx did no co-localize with repressive chromatin and it only partially overlapped with active transcription sites, providing evidence that Ubx has specificity in its localization and is not found at all active loci. Since these results were found in fixed embryos, the authors wanted to confirm it wasn’t just an artifact of the fixation process, so they performed live imaging of Ubx using a Halo tag and a fluorescent dye ligand, JF635. They found the same results, in which Ubx was localized to specific regions at high concentration, and they further showed that its localization was dependent on DNA binding by mutating the homeodomain. They next wanted to determine if the regions of high Ubx concentration co-localized with sites of active svb transcription using FISH. Indeed, they found that Ubx was enriched at sites of svb transcription, but it was not enriched at sites of active transcription driven by a synthetic enhancer, providing more evidence that its localization has specificity. They next wanted to determine if binding site affinity affected the localization of Ubx by either changing a low-affinity site to a high-affinity site, or by removing multiple low-affinity sites. They found that the switch to a high-affinity site led to decreased enrichment of Ubx microenvironments, and the removal of low-affinity sites resulted in active transcription only occurring in regions with high Ubx concentration. This inverse correlation between affinity and Ubx concentration led them to conclude that binding site affinity determines the enhancer’s response to local Ubx concentration. Lastly, they found that the Ubx co-factor, Hth, was co-enriched around active transcription sites, suggesting that high concentrations of TFs and their co-factors are required for transcription. The authors concluded that clustered binding sites for the same TF, cooperative interactions between TFs and their co-factors, and clustering of enhancers could all result in increased local concentration of TFs by acting as a “trap” to increase their time near low-affinity enhancer sites.
Technically innovative with their use of methods to expand embryos, as well as their use of Halo-tagged Ubx and the dye, JF635, for live imaging.
Major<br /> Fig. 2 A/B don’t seem to match up.
How did they quantify [Ubx] at svb loci in fig 3 f, h, j, l, n, p, r when they used lacZ reporters for the above images?<br /> Why use lacZ reporters rather than FISH of endogenous svb?<br /> There seems to be large variability in their results (i.e. enrichment of Ubx at TALEA driven enhancers of 0.02 ± 0.63), so how significant are any of these results?
Maybe check other Ubx regulated loci with FISH to see if the same concepts hold true.
On 2017-06-08 11:52:14, user Alexander J. Shackman wrote:
"Genetic correlations were also found for each of the factors—but, importantly, not with the general<br /> neuroticism factor—with obesity (anxiety/tension rg = 0.49" ---- missing neg sign
On 2019-08-17 19:10:13, user Hurley Li wrote:
Data leakage problem in your model!!!
The design of your adjacency matrix and the way you split the train/test set will cause a huge data leakage problem in your training, because your train / test set is created independently for gene_adj and gene_adj.transpose(copy=True), and therefore the edges from the test set in gene_adj is actually included in the training set of gene_adj.transpose(copy=True).
Same problem goes for the train / test set between gene-disease matrix and disease-gene matrix. The validation edges from gene-disease matrix are actually used for training in disease-gene matrix, and vise versa.
Could you please clarify?<br /> Thanks!
On 2021-06-03 13:52:31, user Chris wrote:
Abbreviating AUROC as AUC is awkward - AUPR is also an AUC metric (that has different characteristics to AUROC).
On 2023-03-04 04:52:18, user UTK - Journal Club 603 wrote:
Summary. <br /> The bacterium Bordetella bronchiseptica causes respiratory infections, atrophic rhinitis, and kennel cough. B. bronchiseptica is widely transmitted via respiratory droplets between animals. This study investigates the dynamics of how B. bronchiseptica induces an immune response and, more specifically, on how eosinophils may provide long-term immunity against Bordetlla spp. after B. bronchiseptica infection. Using RNA sequencing data, animal disease models, microscopy, and cytokine analysis, the report confirms that eosinophils play a larger role than previously thought in generating a more robust adaptive immune response.
Positive feedback. <br /> There are several good things about the paper. Eosinophils are an understudied and potentially misunderstood immune cell type, and the paper sheds light on their role in a bacterial infection (while it is typical to think of eosinophils to be important in worm infections). The use of mutated Bordetella btrs and RB50 strains was a significant strength of the paper. In comparison to the immune response in the murine models, they provided solid evidence collectively. In addition, the repetition of screening methods for the effects of the mutant on immune suppression provides stronger evidence of immunological variation. Using two strains of mice (Balb/c and B6 with two different mutants) is also a strength.
Major Concerns
The authors do not talk about the specificity of the GATA-1-deficient mice for depletion of eosinophils. It has previously shown that GATA-1 regulates basophil development and function of basophils (https://www.pnas.org/doi/10... "https://www.pnas.org/doi/10.1073/pnas.1311668110)"). Perhaps as a confirmatory experiment, the authors should perform eosinophil depletion with mAbs as was previously published (https://www.jacionline.org/... "https://www.jacionline.org/article/S0091-6749(05)04018-2/fulltext)"). This will allow to confirm that eosinophils are directly involved in the process of bacterial control and better establish causality.<br /> When looking at lymphocytes in the lung, authors do not discriminate between cells in the lung vasculature vs. lung parenchyma. This may be important to determine which cell population is actually in the lung and involved in bacterial control. How intravascular staining could be used to detect cells in the blood vs. tissue is described here: https://www.nature.com/arti... <br /> The authors need to add figure/panels on the gating strategies for detecting T cells and B cells, along with histograms for major panels. <br /> When determining if eosinophils are required to promote a TH17 microenvironment, Figure 7D shows a possible false positive - i.e., detection of IL17 in naive lungs. These tissues should not have IL-17.<br /> Measurement of immune responses are not numerically consistent between different panels. For example, Fig 34D states 200 million T cells to be detected which is likely impossible. Please check ALL numbers and make them correct.<br /> In most cases it would be useful to measure Ag-specific immune response. Is IFNg+ T cells detected specific to the bacteria?<br /> Side note: B. bronchiseptica rarely infects humans. It is a clinical concern in animals such as canines, felines, livestock, and mice. iBALT formation may correlate to tissue damage within the lungs of humans. I understand that the infection with B. bronchiseptica may provide resistance to B. pertussis, but vaccinations are already in place to provide resistance. Do these vaccines stimulate a similar initial response as RB50 and RB50?btrs?
Minor concerns
The paper did not give sufficient context for some of the employed models. Comparing BALB/c and C57BL/6 to the eosinophil-deficient EPX/MBP, for example, two mice models were used: BALB/c and eosinophil-deficient EPX/MBP. Prior to conducting study on eosinophils, I am unsure of the meanings of the acronyms, however I understand why they were used.<br /> Would experiments with infection and then antibiotic treatment be informative?<br /> Eosinophils have been shown to play a role in TB in mice, e.g., PMID: 34347010, 35905725. Perhaps this should be mentioned.<br /> The author should increase the resolution of the figures used in the paper, some axes labels are very tiny and impossible to read. The current state could lead to confusion or misinterpretation of the data provided.<br /> Throughout the paper, somewhat inappropriate language is employed. For instance, the term novel and the opening sentence of the abstract. Check if the author can also adjust the usage of these terms when describing findings. A less biased observation is the result.<br /> With a computer and printout, microscopy images proved tough to observe. For improved processing, the writers should raise the exposure of their photos. While discussing exposure, the writers should modify figures to make them more accessible to colorblind readers.<br /> The authors should quantify the relevance of the graphs' statistical significance. The values would aid the reader in comprehending which facts are significant.<br /> Some figures are difficult to comprehend because they contain too many or too few data points. Figure 5C is a case of insufficient specificity. The reader cannot grasp the data in the CD4+IL17+ graph. <br /> In many places conclusions are reached only by looking at mRNA levels. Can these be confirmed with ELISA?<br /> Statement that pathogens evolve to suppress immunity lacks evidence. Some pathogens may actually want inflammation for transmission, e.g., Mtb.<br /> Selection of differentially expressed genes should be corrected for false positive detection, e.g., using FDR (e.g., https://en.wikipedia.org/wi... "https://en.wikipedia.org/wiki/False_discovery_rate)") <br /> The author should add extra identifiers to Figure 6's figures. There are two D's on display. This makes it difficult to explain and read in the figure explanation. Figure 6's micrograph likewise lacks a visible or understandable scale bar. These photos may be difficult to decipher for the reader.<br /> For all the microscopy, the author should state that the images were taken with the same exposure.<br /> The authors should be more thorough in distinguishing that lungs are complex organs, with many results in different results where the organism tries to colonize.
On 2019-05-04 18:37:34, user L. T. Fang wrote:
Detailed documentation of the somatic mutation analysis can also be found at https://sites.google.com/vi.... That page is continuously maintained and updated to reflect the latest finding and version updates with regard to the somatic mutation "ground truth."<br /> Comments are welcome here.
On 2023-08-09 23:47:50, user Ashraya Ravikumar wrote:
Review of "Predicting Relative Populations of Protein Conformations without a Physics Engine Using AlphaFold2"
The development of machine learning algorithms, most notably Alpha Fold 2 (AF2), have improved the speed, quality and accuracy of protein structure prediction. A next challenge is to use these approaches to predict alternate conformations and the effects of sequence variants on structure. Considering the ubiquity of functionally significant fold-switching and order-disorder transitions, developing the ability to predict these alternate conformations has the potential to inform the discovery of new drug targets. Similarly, the conformational equilibrium of drug receptors relates to their affinities for drugs, highlighting the importance of predicting the relative population of different conformations.
Previous research has found that subsampling the input multiple sequence alignments in AF2 and increasing the number of predictions was able to sample alternative structures of the same target protein, even capturing different fold-switching states of known metamorphic proteins. Prior work has also generated conformational ensembles through reducing the max_seq:extra_seq parameter values and used these ensembles as starting points for molecular dynamics simulations to sample more conformations of interest such as cryptic ligand binding pockets.
Here, the authors use a similar approach of MSA subsampling to discover alternate conformations and their relative populations of certain proteins purely using the AF2 pipeline without the need for extensive MD simulations. They demonstrate how subsampling MSA by modulating the max_seq:extra_seq parameters can generate ensembles of protein conformations whose relative populations correlate with experimental knowledge. They test AF2’s capacity to predict differences in conformer populations with two example proteins–Abl1 tyrosine kinase core and granulocyte-macrophage colony-stimulating factor (GMCSF). With Abl1, they found that AF2 can qualitatively predict the effects of mutations on active state populations of kinase cores with up to eighty percent accuracy. They also found that their method predicted most of the activation loop intermediate states in the active-to-inactive transition of the kinase core, performing comparably to predictions obtained from multi-microsecond MD simulations. Despite the paucity of sequence data for GMCSF compared with Abl1, they were able to predict the extent of variation in backbone dynamics among GMCSF variants, which allowed them to conclude that AF’s prediction engine could decode population signals from relatively scarce data. Overall, the results are very interesting and encouraging and the manuscript is well written. We have the following points which we feel, if addressed, could make this manuscript stronger.
Major points:
Minor points:
Review written by Ashraya Ravikumar and Sonya Lee with input from other Fraser Lab members at UCSF
On 2022-09-30 22:28:04, user MIT Microbiome Club wrote:
How good were the different models at predicting the *sign* of the interactions? (Minor)
On 2024-08-30 17:42:18, user David Cerný wrote:
The in-text citations are not properly linked to the corresponding bibliography entries. It would be great to post a v2 that fixes this problem.
On 2018-06-09 22:51:19, user Anna Maria Musti wrote:
This paper represents an innovative experimental approach, combining live imaging with light- and cryo-electron microscopy to resolve the functional ultrastructure of tunneling nanotubes and to demonstrate their specific identity. Hopefully, we will soon learn about molecular and signaling networks involved in nanotubes biogenesis!!
On 2017-08-30 13:56:57, user Qin Jerry wrote:
Dear authors,<br /> I don't think I understand after reading this paper. So can you give me a address where I can download the raw data of this article? I want to practise to processing data following your procedure. Thanks!
On 2018-06-11 14:33:50, user Edgar Buhl wrote:
It is really important to compare results produced in the lab to what is actually happening out there in the wild, especially when studying pests. A study like this is thus really helpful in determining which parameters are important in order to adapt lab protocols!
On 2020-05-05 21:45:40, user Arnaldo Guerrero wrote:
It seems to me that, considering that any spike mutation would affect drastically the production of a working vaccine, this report about the mutation of the Covid-19 virus is most important to be looked up by the peer medical/scientific community. As it is right now, the "medical-ridden" media act with disdain when asked about these mutations reported. The main reason given is that it is a Pre-report that has not been evaluated by said medical/scientific community. I propose that the key here is prioritization. This type of information could signify the making of decisions that are necessary in order to obviate the wasted time that its non-reporting could create, since we are talking about the making of vaccines that takes years to do so. Also, it could prevent any premature governmental action in the name of economics without consideration of the health of their citizens. Make haste then, so that lives can be saved. Thank you.
On 2020-05-21 17:41:37, user Research Explained wrote:
Our team wrote a general public friendly summary of this study and its strengths and weaknesses. Check it out at: https://www.researchexplain...
On 2025-11-04 18:29:17, user Leonardo Salmena wrote:
This study has now been published https://rdcu.be/eOaYe
On 2024-06-06 12:00:30, user Elli wrote:
I am unable to see the supplementary tables the preprint refers to, where can I find these?
On 2024-10-17 14:05:57, user Christina Warinner wrote:
It is very nice to see the authors statistically confirm on a large number of samples that oral bacteria contribute to the thanatomicrobiome of archaeological teeth. They may want to note that this pattern has been previously observed and reported twice before: <br /> Mann AE, Sabin S, Ziesemer KA, Vågene Å, Schroeder H, Ozga A, Sankaranarayanan K, Hofman CA, Fellows-Yates J, Salazar Garcia D, Frohlich B, Aldenderfer M, Hoogland M, Read C, Krause J, Hofman C, Bos K, Warinner C. (2018) Differential preservation of endogenous human and microbial DNA in dental calculus and dentin. Scientific Reports 8:9822. DOI: 10.1038/s41598-018-28091-9<br /> Vågene AJ, Campana MG, Robles García N, Warinner C, Spyrou MA, Andrades Valtueña A, Huson D, Tuross N, Herbig A, Bos KI, Krause J. (2018) Salmonella enterica genomes recovered from victims of a major 16th century epidemic in Mexico. Nature Ecology and Evolution 1-9. DOI:10.1038/s41559-017-0446-6.
On 2019-03-08 10:46:51, user David Gfeller wrote:
EPIC: Not a great acronym, since EPIC is a published method for cell fraction predictions developed in my lab (https://elifesciences.org/a... "https://elifesciences.org/articles/26476)"), and that we are also actively developing HLA ligand predictors (MixMHCpred and MixMHC2pred).
On 2021-04-26 05:23:48, user YU QIAO wrote:
A great and very interesting study. The writing is concise while clearly articulates the logic. It’s very effective to use both knockout and over/ectopic-expression of fascin throughout the paper; it makes the information more comprehensive and the reasoning more solid. Personally, I really like the in vivo study with PFKFB3 knockdown, especially the use of a fascin OE background. Additionally, it is very appealing to target fascin, but I believe that for the last section, more data from an in vivo study can make the paper stronger. Also, it might be worthwhile to test other fascin inhibitors, to note the potential side effects of each, and to put the inhibitors with combination with, for example, other chemo- or radio-therapy. A general comment on the figures: the varieity of colors makes it hard to comprehend some of the figures, and some colors (e.g. Fig1.G-H) are too light or too similar to each other and cause confusion. The color choice for control and OE is not red-green blind friendly. In Figure 5, the representation in C and D is a bit confusing; it could be more clear to show r and p values in a different way, or in different colors. For Figure 6, it will be more effective to show only one or two representative mice/samples per group, as there is some repeated information and the figures are too small. However, overall, it’s a really beautiful study, and I greatly appreciate your work.
On 2020-05-13 18:29:44, user Sinai Immunol Review Project wrote:
Title Bulk and single-cell gene expression profiling of SARS-CoV-2 infected human cell lines identifies molecular targets for therapeutic intervention<br /> Wyler et al. biorXiv [@doi: 10.1101/2020.05.05.079194]
Keywords<br /> • scRNAseq<br /> • Interferon-Stimulated-Genes (ISGs)<br /> • HSP90
Main FindingsWyler et al. performed bulk and single cell RNA sequencing of three human cell lines at different time points after infection with SARS-CoV-1 or SARS-CoV-2. The cell lines used were H1299 and Calu-3, both epithelial lung cancer cell lines, and Caco-2, a colorectal adenocarcinoma cell line. Permissiveness to SARS-CoV-1/2 was different among cell lines: H1299, which express low ACE2 levels, produced less viral RNA and lower yield of infectious virus than Caco-2 and Calu-3.
Bulk RNA-sequencing showed important differences in host transcriptome responses between the Caco-2 and Calu-3 cell lines. Caco-2 cells exhibited an increase in ER stress genes. In contrast, Calu-3 exhibited a strong induction of Interferon-Stimulated-Genes (ISGs), such as IFNB1, CXCL10, HLA-B, HLA-C. This ISG induction was 2-fold higher for SARS-CoV-2 infection compared to SARS-CoV-1. scRNAseq from Calu-3 cells confirmed the differential ISGs expression. Sars-CoV-2 induced higher expression of IFIT1 and IFIT2 than SARS-CoV-1. Only a cluster of SARS-CoV-2 infected cells showed strong IFNB1 induction. RNA velocity analysis, which can measure the amount of nascent RNA, showed that the induction of ISG was short and transient during viral infection, and preceded Nf-kB signaling target genes activation (IL6, TNF, NFKB1A). A minor increase of ACE2 expression was also noted.
To detect subtler transcriptomic changes not related to the IFN response, the authors analyzed scRNAseq from H1299 cell line, which seem less permissive to infection. HSP90 expression correlates with the amount of viral SARS-CoV-2 RNA, but not with SARS-CoV-1 RNA. A similar induction was found in Calu-3 scRNAseq at early time point. Chemical blocking of the HSP-90 pathway in Calu-3 cells upon viral infection led to a strong reduction of viral replication and expression of the pro-inflammatory genes IL1B and TNF, but interestingly, not of IFIT-2.
Limitations<br /> Although increased transcription of ER stress genes was identified in Caco-2 cells, the authors did not report changes in HSP90 expression in this cell line. This could further indicate whether HSP90 induction is a lung-specific mechanism and could explain COVID19 pathology. Moreover, the relevance of these findings would benefit from the confirmation of HSP90 upregulation in more physiological systems such as primary cells or tissue derived from patients. Furthermore, validation of the role of HSP90AA1 and specificity of 17-AAG using HSP90AA1 knock-out cell would further strengthen these results.
The authors correlate the low susceptibility of H1299 with lower expression of ACE2, but scRNAseq data of H1299 indicates that the majority of cells are infected. Therefore, it is unclear what factors are responsible of H1299 relative resistance to infection.<br /> The authors state that the lack of ISGs induction in Caco-3 could be due to a reduced expression of Pattern Recognition Receptors (PRRs) is this cell line. There might be other differences between cells lines that would explain the contrasting results, rather than the PRR expression. To confirm the role of RNA sensors, the authors could perform targeted experiments, such as genetic deletion of PRR pathway for example. <br /> Figure 1 and Suppl Figure 1 reference in the text seems to have been mixed (S1D wrongly referred as Fig 1B, S1C as 1C, etc.)
Significance<br /> Although this model uses epithelial cancer cell lines, it is of great interest to understand the effect of SARS-CoV-2 infection on lung epithelial cells. Indeed, this study identifies a potential drugable target (HSP90) against SARS-CoV-2 infection, although these findings remains to be confirmed in primary tissues, animal models, or patients. The effect of blocking HSP90 identified here is of important clinical relevance, as it decreases viral replication and the production of cytokines that could be involved in the ARDS pathogenicity.<br /> Analysis of patients with severe COVID-19 showed impaired IFN-I responses compared to mild or moderate cases1, and, together with studies using animal models2, suggest a central role for the dysregulation of IFN-I signaling in COVID-19 pathology. Activation of IFN signaling upon SARS-CoV-2 infection has been observed in lung epithelial organoids3, but other studies indicate a lack of robust IFN type I/III signaling upon SARS-CoV-2 infection compared to influenza A or RSV infection4. The possible discrepancies between the results presented in this preprint and other studies could be explained by different experimental settings, such as the use of different time points, cell lines or MOIs, and warrant further investigations.
References<br /> 1. Impaired type I interferon activity and exacerbated inflammatory responses in severe Covid-19 patients | medRxiv. Accessed May 12, 2020. https://www.medrxiv.org/con...<br /> 2. Boudewijns R, Thibaut HJ, Kaptein SJF, et al. STAT2 signaling as double-edged sword restricting viral dissemination but driving severe pneumonia in SARS-CoV-2 infected hamsters. bioRxiv. Published online April 24, 2020:2020.04.23.056838. doi:10.1101/2020.04.23.056838<br /> 3. Ravindra NG, Alfajaro MM, Gasque V, et al. Single-Cell Longitudinal Analysis of SARS-CoV-2 Infection in Human Bronchial Epithelial Cells. Microbiology; 2020. doi:10.1101/2020.05.06.081695<br /> 4. Blanco-Melo D, Nilsson-Payant BE, Liu W-C, et al. SARS-CoV-2 launches a unique transcriptional signature from in vitro, ex vivo, and in vivo systems. bioRxiv. Published online March 24, 2020:2020.03.24.004655. doi:10.1101/2020.03.24.004655<br /> 5. Zheng H-Y, Zhang M, Yang C-X, et al. Elevated exhaustion levels and reduced functional diversity of T cells in peripheral blood may predict severe progression in COVID-19 patients. Cell Mol Immunol. 2020;17(5):541-543. doi:10.1038/s41423-020-0401-3
Credit<br /> Reviewed by Emma Risson and Bérangère Salomé as part of a project by students, postdocs and faculty at the Immunology Institute of the Icahn School of Medicine, Mount Sinai.
On 2024-09-10 18:32:52, user Thomas Sorger wrote:
Please note that the date of the second reference (2003) is incorrect. The correct date is 1983:<br /> 2. Armstrong E. Relative brain size and metabolism in mammals. Science 220: 1302–1304 (1983).<br /> Tom Sorger
On 2019-06-26 02:23:03, user John F. Allen wrote:
Remarkable paper, explaining much. I've long wondered why plastid DNA encodes NAD(P)H dehydrogenase subunits only in land plants.
On 2024-10-06 09:17:57, user Phil Jones wrote:
This article has now been published:<br /> https://www.nature.com/articles/s41588-024-01891-8
On 2024-01-11 10:11:41, user Beth wrote:
Fetal sex is not mentioned in this study. Could you look at sex differences? Was fetal sex controlled for when looking at the effect of gravidity? Was there an equal balance of male/female placentas in the primi and multigravida groups? If not, this could confound the identified differences between these two groups.
On 2021-08-03 14:27:30, user Hypo wrote:
Why was Illustration g removed?
It was a chart of Percent of CD8 in donor R6 Showing the change in Non Spike to Spike from Post infection to Post Vaccine.
It was a topic of intense discussion among people I know and they found it very interesting.
On 2020-07-19 16:44:56, user Casey Burridge wrote:
"Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) emerged in December 20191,2 and is responsible for the COVID-19 pandemic3". You have referenced this yet I cannot find evidence of this anywhere in that document. In fact, has any study conclusively proved that Sars-Cov-2 causes COVID-19?
On 2020-10-17 00:16:03, user Matthew Maxwell wrote:
Hi, Amazing package! I was wondering if Nebulosa has the ability to generate UMAP plots that are split by Seurat metadata parameters such as experimental conditions or orig.ident?
On 2018-07-28 04:20:23, user Frank Stahl wrote:
Amazing Work!
On 2022-10-20 14:55:33, user pp crawler wrote:
A comment can be found on Pubpeer.
On 2021-06-21 16:36:33, user Philip Cook wrote:
Now published in Nature Methods:
On 2023-10-18 18:45:43, user Vanessa Staggemeier wrote:
Moura et al. evaluate the loss of suitability areas for non-flying mammals in the Caatinga in two future periods (2060-2100) under climate change effects and what would be the expected changes in the biotic composition of communities.
The authors employed an interesting approach with restrictions on species dispersal in the models and the results contribute to predicting the effects of climate change in this biome.
We see the importance of focusing on biotic changes and % of range loss, but it is our belief that adding the final predictions for each species in the supplementary material, in terms of maps and range shifts (direction of shift), it would be worth and informative because this information is important for managers and decision makers (those who manage conservation units but also to the researchers working on specific taxa).
We also think that including a more detailed discussion about some species that have been modelled in other previous studies could enrich the work and make some of the results obtained here clearer. For example, why species with a wide distribution such as Callicebus barbarabrownae would lose their entire area of suitability in 2060? Other studies, such as Barreto et al. 2021 and Gouveia et al. 2016 found different results, could you attribute this to the methodological choices?
We think the words used in the bibliographic review were not wide enough to include studies with mammals in the Caatinga because some important references are out of the included papers. The chosen words are mainly related to the biome or region. Maybe another approach would be to review occurrence records in a systematic way looking for articles with species names (as keyword) based on a preliminary list of mammals.
Including latitude and longitude in the maps it would be more informative and including political division of states could help to subside discussion for specific regions of Caatinga.
We wrote this comment during a meeting to discuss preprint papers that occurred by September, but I was able to post it just now.
I saw that the paper was accepted yesterday, so I am not sure if our suggestions/questions will have some worth to the authors (feel free to reply or not), but we decided to contribute with them anyway.
Many congratulations for your article! Although we think that some points could be different, we are sure that article is a nice contribution to understand potential effects of climate change in Caatinga :)
Comment written at the Laboratório de Ecologia Vegetal, Evolução e Síntese (LEVES) at the Universidade Federal do Rio Grande do Norte, RN, Brasil. Joined this meeting: Vanessa Staggemeier, Hercília Freitas, Víctor de Paiva, Yan Gabriel, Alexander Chasin, Rhuama Martins, Vitoria Alves, Jose Nilson dos Santos, Rafael Rocha dos Santos, Maria Luiza and João Paulo Câmara.
References<br /> 1) Barreto, H. F., Jerusalinsky, L., Eduardo, A. A., Alonso, A. C., Júnior, E. M. S., Beltrão-Mendes, R., ... & Gouveia, S. F. (2021). Viability meets suitability: distribution of the extinction risk of an imperiled titi monkey (Callicebus barbarabrownae) under multiple threats. International Journal of Primatology, 1-19.
2) Gouveia, S. F., Souza-Alves, J. P., Rattis, L., Dobrovolski, R., Jerusalinsky, L., Beltrão-Mendes, R., & Ferrari, S. F. (2016). Climate and land use changes will degrade the configuration of the landscape for titi monkeys in eastern Brazil. Global Change Biology, 22(6), 2003-2012.
On 2019-03-26 10:19:43, user Maximilian Krause wrote:
the correct code repository link is https://github.com/adnaniaz...
On 2020-07-18 00:50:12, user Alok Sharma wrote:
A comprehensive tool to do single-cell RNA-seq data clustering. It can also perform, outlier detection, estimating number of clusters, and batch correction. This is a python package
On 2019-11-30 05:14:44, user Jesse CM wrote:
Love ants and love efforts to disentangle the drivers of biodiversity gradients, but I'm not always sure eusocial insects are the best starting point for testing methods that use SAD and intraspecific spatial aggregation. I realize that a major reason for the paper is to demonstrate a new method, but it seems to me that it would be worthwhile to point out that a similar study of lycosid spiders or plethodontid salamanders might not necessarily show the same patterns.
Ants are eusocial, colonial organisms, so changes in m^2-level SAD's along a gradient would seem to warrant at least a brief mention that it's likely related to a change in colony size. I think this doesn't necessarily detract from the techniques discussed in this paper, but I was surprised not to see this aspect of the biology of the study organism discussed at all.
Specifically, as the authors say, "... changes in species richness would be expected to be closely linked to changes in total numbers of individuals but not changes in species relative abundances or their spatial distributions." [but] "...if higher energy decreased competitive exclusion then changes in richness could be linked to changes in the relative abundance of species rather than the total number of all individuals."
The above statements are straightforward to interpret for asocial organisms that are approximately the same size and trophic level, but when applied to eusocial organisms that have varying colony sizes (and worker sizes that vary over 2 - 3 orders of magnitude and have different trophic strategies), they are a bit more difficult to interpret. Is a worker ant an "individual" for the "more individuals hypothesis"? Or is a colony a more appropriate "individual"?
Somewhat related: it might also be useful to mention why the conclusions of Sanders et al. 2007 seem to be so different from the conclusions of the present paper regarding the relationship between "abundance" and elevation, since they use the same dataset. The use of number of m^2-level incidence data as a proxy for abundance (rather than raw number of individuals m^-2) in Sanders et al. 2007 seems to make sense in light of ant natural history, however the present paper suggests that including m^2-level individual counts leads to different conclusions with respect to abundance, elevation, and species richness. This is certainly interesting, but I think the paper would be improved by framing the conclusions in light of Sanders et al. 2007's methods for quantifying abundance, and a quick acknowledgement of ant natural history.
A useful augmentation of this discussion might be to include an analysis of the same dataset as presence-absence data in the supplemental materials (as the authors suggest is possible).
On 2020-10-02 10:07:12, user Anon wrote:
The authors of these papers are spreading misleading information on their research using the national media of Bangladesh. They are claiming BioRxiv as a leading us-based journal.
On 2020-03-28 13:18:15, user Euan Pyle wrote:
Hi, this is nice work! I noticed at one point you say "Thus, lipid-protein interactions are likely crucial in the activity of the majority of membrane proteins but actual functional data to support this hypothesis is scarce." which is true! Although, we published a few papers finding a functional role for protein-lipid interactions if you are convinced by the argument we present:
On 2020-05-07 14:45:27, user Liz Miller wrote:
This paper was the subject of the Miller lab journal club and, following a lively discussion of the findings, we offer the following comments.
In this paper, Jiménez-Rojo and colleagues investigate roles of sphingolipids (SL) and ether lipids (EL) in cell physiology using a powerful genetic screen, lipidomics and biophysical experiments. A genome-wide CRISPRi screen identified genes conferring hyper-sensitive and resistant phenotypes in the context of SL depletion. These genes fell into 3 major families relating to sterol synthesis (hyper-sensitive mutants), glycerolipid synthesis (both hyper-sensitive and resistant mutants) and vesicular trafficking (hyper-sensitive mutants). Lipidomics analysis of SL-depleted cells showed an increase in ether lipid (EL) species, confirming an EL/SL relationship observed in the CRISPRi screen. Authors also show similar physico-chemical properties of EL and SL, and how they interact with the GPI-anchor protein cargo receptor TMED2, proposing roles of these lipids in anterograde and retrograde traffic. Overall, this study not only provides insight into cellular adaptations during SL depletion, but also gives a biophysical explanation behind evolutionary selection of EL as a GPI anchor base in mammals, evolving from ceramide in yeast.
We have some brief comments that arose during the group discussion:
Blocking SL synthesis through inhibition of SPT with myriocin changes the lipidome significantly, including ER membrane composition. Changes in the latter are known to trigger ER stress and UPR. We were wondering if the UPR was monitored, and whether ER stress might represent a confounding interaction in the genetic analysis. Trafficking genes may arise as sensitizing mutations because of an exacerbated UPR in addition to more specific lipid effects.
Sterol synthesis-related genes were enriched in hyper-sensitive mutants, similar to EL synthesis genes. Knowing that sterols also rigidify membranes, it would be interesting to see if these species were also upregulated upon myriocin treatment to compensate for SL loss, similarly to EL.
The authors propose that upon reduced retrograde traffic, SM18 is redirected to the endo-lysosomal pathway and provide some evidence for this. However, reduced COPI traffic was not demonstrated directly in a similar manner to that of Contreras et al (2012) using exotoxin A. We wondered if perturbations in retrograde traffic might indirectly affect GFP-GPI transport under SL depletion (Figure 5)?
We also were curious if the increased GPI-AP traffic under myriocin and sgAGPS treatment observed in Figure 5 E&F is still TMED2-dependent. Could the altered lipidome have changed the transport pathway for GFP-GPI?
Lastly, we were wondering how the presence of additional TMDs might affect the MD simulations of p24-lipid interactions, especially considering that p24 oligomerization is important for their function and stability.
Thank you for sharing your work on BioRXiv and we hope our comments are of some use/interest to the community :)
On 2025-08-25 13:24:45, user Chestnut wrote:
Thank you for sharing this excellent preprint. To support reproducibility and general 3D microscopy benchmarking (not tied to a specific project), may I request a small, de-identified sample of raw light-sheet volumes (primarily structural/reference channels; cropped/downsampled is fine)? This is for academic use only with no redistribution; I’m happy to sign a DUA and delete the data upon request or project completion. If feasible, please share a contact email or your preferred sharing method (Globus/S3/institutional storage). Minimal metadata like voxel size and channel order would be very helpful. Many thanks!
On 2024-10-19 18:51:50, user Alessio Ciulli wrote:
This comment is to advise readers that our preprint has been published in Sci. Adv. 10, eado6492 (2024). https://doi.org/10.1126/sciadv.ado6492
On 2025-04-14 13:19:56, user L. Eiden wrote:
Interesting new data on the relationship between neuronal firing rate and differential release of SMATs (small molecule amine transmitters) and neuropeptides in a functionally important brainstem to forebrain circuit.
On 2022-10-23 05:42:14, user Maxine (CDSL) wrote:
Hi, <br /> I felt that this pre print did an excellent job at showing the importance of AMR. <br /> For this comment I am just going to address the introduction and discussion as those are the parts that peaked my interest the most. <br /> For the abstract and introduction, i felt that it was very thorough and descriptive in describing AMR, and what our next steps as scientist and researchers should be to combat AMR. Great background information overall, nothing much to critique. <br /> The discussion I felt that you all, <br /> elaborated very well on their findings, missed out on discussing further research. I also felt that it was not as interesting as the introduction and could have added a bit more future research. Also felt that a lot of scientific jargon was used, which should be avoided when trying to translate to the general public.
On 2025-07-29 15:47:03, user Leah Gulyas wrote:
This work has been subdivided; a submission featuring data from this preprint with additional new data is available on bioRxiv as:<br /> "Cleavage of the RNA polymerase II general transcription factor TFIIB tunes transcription during stress" (doi: https://doi.org/10.1101/2025.07.28.667251 )
On 2016-09-05 12:58:45, user Simone Scalabrin wrote:
The BUSCO percentage for Cabernet Sauvignon dataset seems pretty low, 80%... We have another Vitis vinifera cultivar assembled with Illumina with much better results (94% of the 956 BUSCO plant genes are found complete). Is there anything wrong in the figure?
On 2023-06-06 19:52:14, user Aayushi wrote:
After reading through this paper thoroughly, the results were very interesting to me, particularly the novel ideas about levels of spike protein production and the potential effects of this evolution of vaccine efficacy in the future. <br /> Some concerns we had that we feel could improve the paper if addressed were:<br /> The use of only male hamsters as the in vivo model did not seem very well justified, if there was some reasoning to this choice it would be useful to explain in the methods or discussion. <br /> Clarifying which lung lobe the sample is taken from would make the data more clear as Covid-19 is often an upper respiratory infection<br /> The omission of data from many figures, such as the S2’ data from the western blot densitometry figures and and the 7 dpi viral titer, can be confusing for readers<br /> Having the figures state non-significance in the comparisons where statistics were done but no significance was detected would clarify the images. <br /> The background was a bit hasty for those unfamiliar with the most current research in SARS-CoV-2, and could be expanded.<br /> Overall, this paper was well written and the findings are clearly meaningful to the research community, and I highly appreciate the contributions of this lab to the field.
On 2023-10-30 08:19:18, user Sebastiaan Mathôt wrote:
A revised version of this preprint has been published and can be found here: https://doi.org/10.1016/j.n...
On 2023-03-23 07:54:02, user Prof. T. K. Wood wrote:
On 2020-09-13 15:02:45, user mob wrote:
i like this research but where can i found the "Table S1"?
On 2021-07-16 14:56:45, user Claudiu Bandea wrote:
Will Borgs Illuminate the Evolutionary Origin of Ancestral Viral Lineages?
Borgs - another remarkable discovery by Banfield Lab that could illuminate the origin of ancestral viral lineages (1); the other discoveries I have in mind are the huge phages (2) and ARMAN/Thermoplasmatales inter-species connections (3).
True to their data, Al-Shayeb et al. (1) seem, at least for a moment, to limit their speculations on the nature and evolutionary origin of Borgs to open questions: “Are they giant linear viruses or plasmids unlike anything previously reported? Alternatively, are they auxiliary chromosomes?” Then, to my big surprise, the authors, rather casually, write: “Perhaps they were once a sibling Methanoperedens lineage that underwent gene loss and established a symbiotic association within Methnoperedens …” (1). So, why is this a big surprise?
Over the last four decades or so, I have been searching for data and observations that are consistent with, or support, the Fusion Hypothesis on the origin and nature of the ancestral or emerging viral linages (4-6). Although, it is clear that the extant viruses originated from other viruses, and there is compelling evidence that the endogenous viral elements, such as transposons and plasmids, originated from exogenous viral lineages, the evolutionary origin of the ancestral viral lineages has remained enigmatic.
According to the Fusion Hypothesis, the ancestral viral lineages originated from parasitic cellular organisms, including endo- and ecto-parasites that, to increase their access to the resources present in their environmental niche (i.e. the host cell), fused their cell membrane with the host cell membrane, thereby losing their own cellular organization within the host cell. However, after synthesizing their proteins and other specific molecules and replicating their genome, these novel type of organisms induced the morphogenesis/differentiation of cell-like reproductive forms (i.e. virus particle, or virions), which started a new life cycle by fusing with new host cells. [Metaphorically, the Fusion Hypothesis places the ancestral viruses at the intersection of Hollywood and Greek ‘mythologies,’ in which 'viral Borgs' assimilate their hosts, and reemerge just like Phoenix. Factually, within the host cell, viruses, which have been historically and conceptually misidentified with the virions (4-9), are considered to be in the eclipse phase designated as “The time between infection by (or induction of) a bacteriophage, or other virus, and the appearance of mature virus within the cell”(10)].
A fundamental premise of the Fusion Hypothesis is that only symbiotic/parasitic lineages that have a cellular and molecular composition, and processes compatible with those of their host cells (e.g. an archaeal lineage parasitizing another archaeal lineage) have the opportunity to evolve into a viral lineage (4-6); this implies that bacterial or archaeal lineages parasitizing eukaryotic host cells, for example, are unlikely to be able to evolve into viral lineages, regardless of the degree of their genome/proteome reduction (11). Another intriguing inference from this evolutionary model is that numerous cellular lineages evolved into viral lineages throughout the history of life, and that, remarkably, this process might still be active (5-6).
The Fusion Hypothesis is a radical departure from the conventional thinking on the evolutionary origin and nature of ancestral viral lineages, including the historical reductive hypothesis, which lost its appeal more than half of century ago because it could not explain the gradual evolutionary transition from a cellular organisms to viruses (15), which have been conceptually misidentified with the virions and have been erroneously defined based on their physical, biochemical and biological properties (4-9). Perhaps no one has questioned the dogma of viruses as virus particles more explicitly, and in stronger terms, than Jean-Michel Claverie, one of the leading researchers in the field of giant viruses, who asked: “what if we have totally missed the true nature of (at least some) viruses?” (8). Claverie answered this intriguing question in a rather revealing way: identifying viruses with the virus particles, he wrote, might “be a case of ‘when the finger points to the stars, the fool looks at the finger.” (8).
Nevertheless, likely, very few readers of this note are familiar with or even heard of these radical perspectives on the origin and nature of viruses. That might change, though, if the researchers realize that, as discussed next, these new perspectives might better explain the existing data and observations and might open new research venues and objectives for grant applications.
Fortunately, there are only 2 broad ways of thinking about the evolution of viruses, and these paradigms could critically inform the hypotheses on the origin and nature of ancestral viral lineages: (i) viruses have evolved and diversified from simple to more complex entities by increasing the size of their genome/proteome/virions, or (ii) vice versa, they have diversified by reductive evolution. The first paradigm supports the hypothesis that the ancestral or incipient viral lineages were simple genetic entities, usually referred as ‘replicons’, which apparently preceded the cellular organisms at the dawn of life (13-14), and the second paradigm supports the hypothesis that the incipient viruses originated from more complex organisms as suggested in the Fusion Hypothesis.
Because of the high rate of genome evolution and rampant sequence exchanges among various viruses and their hosts, the current sequence analyses cannot clearly differentiate between the two broad evolutionary pathways. Nevertheless, currently, the hypothesis that the complex viruses have evolved from simpler siblings dominates the literature and discussions in the field (e.g.13-14). This perception, though, is in stark contrast to the well-established fact that all intracellular parasitic or symbiotic microorganisms, which count into thousands of species, have evolved toward a smaller genome/proteome/cell size. Although, similar to their free-living ancestors or relatives, these parasitic and symbiotic cellular organisms do occasionally acquire new genetic material, there is overwhelming evidence that, overall, these species have experienced reductive evolution; and this principle apparently also applies to many free-living species. If this is indeed the case, why would viral lineages evolve in opposite direction? Without addressing this critical question, the dominance of the simple-to-complex hypothesis on the origin and evolution of viruses is questionable.
Although, just like any symbiotic/parasitic cellular species, viruses can occasionally increase the size of their genome/proteome (the ‘accordion model’ on viral evolution) it is difficult to define the selective forces leading to the overall evolution of a parasitic organism towards complexity within an intracellular environment. Also, it would be difficult to envision the development of experimental approaches addressing the evolution of ‘replicons’ into simple and, eventually, into more complex viruses; interestingly, Howard Temin’s protovirus hypothesis on the origin of extracellular viruses from endogenous viruses (15) was abandoned when it became clear that the millions of endogenous viruses present in humans and other species originated from exogenous viral lineages, not vice versa.
On the contrary, the Fusion Hypothesis on origin and diversification of viral lineages by reductive evolution is consistent with the life cycle of many viruses, which fuse with their host cells to start their intracellular development (4-6). Given the nature of their intracellular environment, which can provide basically unlimited resources, including ribosomes and other components of the metabolic and informational machineries, and considering the dominance of deleterious mutations over those beneficial, as well as the strong selection for increasing their reproductive rate, it is likely that, overall, viruses have experienced reductive evolution. And, very importantly, this reductive evolution is in line with that of all symbiotic and parasitic cellular species.
Nevertheless, the huge advantage and appeal of the Fusion Hypothesis is that it can be addressed experimentally in the laboratory using various experimental models (5, 6). Even more thrilling is that, as I previously made the case (5), some parasitic/symbiotic cellular lineages are currently in the process of natural transition from a cellular to a viral type of biological organization. To realign this discussion with Al-Shayeb et al. study and intuition (1), it is likely indeed that the ancestor of the 'colorful Borg' was “a sibling Methanoperedens lineage that underwent gene loss and established a symbiotic association within Methnoperedens”, after fusing with it and losing its cellular organization. So are the Borgs viral lineages?
To answer this question, we need to add a few more ‘dimensions’ to the Fusion Hypothesis. As I previously discussed (4-5), the paradigm behind this hypothesis is the ‘cellular fusion’ or ‘hybridization’ phenomena. In principle, two cellular organisms can interact and co-evolve in multiple ways: (i) one cell enters the other, keeps its individualizing membrane (i.e. cell-like structure), and integrates its symbiotic life style and life cycle in synchrony with those of the host cell, as has been the case with the mitochondria and chloroplasts lineages; (ii) a parasitic cellular organism enters its host cell, maintains its cellular structure, and after reproduction it leaves the host cell, which is a very common phenomenon; (iii) a parasitic cellular organism enters the host cell by a membrane fusion mechanism, synthesize its components using the host’s resources, and induce the assembly a cell-like progenies (i.e. virions) that leave the host cell and restart the viral life cycle by fusing with new host cells (iv) in an analogous case, a parasitic cellular organism enters the host cell by a membrane fusion mechanism, ‘assimilates’ the host cell, synthesize its components using the host’s resources and induce the host cell to divide and fuse with other cells, which is another putative viral type of biological organization; (v) and, finally, two related/compatible cellular organisms fuse with each other (i.e. hybridize), and integrate their metabolism and life cycle, generating a new hybrid organism; likely, this has been a very common phenomenon in the history of life, but because of the integration of the sibling partners, it is difficult to detect.
It remains to be seen exactly in which group of biological organization and co-evolutionary pathway the Borgs and their apparent ‘partners,’ the Methanoperedens lineage, fall in, but the discovery of Borgs, and the mystery surrounding their nature and evolutionary origin, should stimulate the interest in developing experimental approaches for addressing the Fusion Hypothesis on the origin of viruses. Additionally, studding the fusion/hybridization of various cellular lineages should open new venues for studying cellular evolution and for dissecting various metabolic and information machineries.
I think it is meaningful to end this note with the inspiring remarks by Jill Banfield (16), the senior author of the Al-Shayeb et al. (1) article:
“I repeat- I haven’t been this excited about a discovery since CRISPR. We found something enigmatic that, like CRISPR, is associated with microbial genomes. We have named these unique entities #BORGs.
*Imagine a strange foreign entity, neither alive nor dead, that assimilates and shares important genes... A floating toolbox, likely full of blueprints, some that we may one day harness, like CRISPR… Wait- wouldn’t that just be a virus? a megaplasmid? a mini-chromosome? No… #BORGs are unique..<br /> .
This discovery started in deep mud and was brought to light by an analysis of around 10 billion DNA snippets. That such an approach could reveal something with potentially global ramifications!
In 2021, I will again sit across the table from Jennifer Doudna (@doudnalab) and we will talk about how we might begin to explore the technological and environmental importance of this discovery...
This may be an example of the type of basic, discovery-based science that can ultimately tackle the big problems that face our world, the type of discoveries that @elonmusk is seeking through his current 100M @xprize
Basic science, starting with fieldwork and looking at what nature has invented, is important if we are to discover things that we could not imagine. This type of science deserves more funding. Without it, the world would not be meeting the #BORGs”
References:
On 2017-04-23 20:57:53, user Amarjeet Kumar wrote:
How I can get the supplementary information of this paper. Please suggest
On 2019-02-21 07:07:24, user Martin Smith wrote:
Profile-based methods (20, 23) such as<br /> Nofold annotate and cluster sequences against a CM database<br /> of known families, therefore their applicability is limited to<br /> already known families and cannot be used for de novo family<br /> or motif discovery.
Nofold uses vector quantization and unsupervised clustering from the CM profiles against which it scores query sequences. It is thus perfectly suitable for de novo RNA structure family or motif discovery, albeit the clustering accuracy may be limited to the CMs used to calculate distance vectors.
On 2022-03-25 09:46:45, user JohnD wrote:
Interesting work, congrats! <br /> Findings would benefit being compare to pre-existing work, including first studies describing engineering of a human bone marrow organoids (https://www.pnas.org/doi/10..., https://www.pnas.org/doi/10... "https://www.pnas.org/doi/10.1073/pnas.2114227118)").
On 2020-12-08 00:25:17, user Andrew Watkins wrote:
If you want to take a look at some additional FARFAR2 model sets for these stem-loops and more, by the way, check our our preprint from April: https://www.biorxiv.org/con...
We do agree that SL6 looks like it has the most plausible binding pocket!
On 2025-12-02 20:25:03, user MB wrote:
Fascinating findings and lovely work- congratulations to all the authors! One point of concern- as of 02 December none of the data/material sharing links provided (e.g. NCBI or Github) are available or return any information.
On 2014-09-04 19:41:51, user Jon Warner wrote:
Dear Nikolai:
For those of us in the ribosome field, your Ms on the variable stoichiometry of ribosomal<br /> proteins (RPs) is a mind blower. While<br /> we are getting used to a few nibbles around the edges, as from Maria Barna’s<br /> paper on L38, yours is extreme. I have a<br /> few questions:
1) While it looks from the red/green that there is a 4-fold difference between different<br /> proteins in a give ribosome fraction. Is that right? I don’t think the paper<br /> mentioned which proteins were particularly variable; that would be useful. Does<br /> that mean that for some proteins there are > 1 copy per ribosome?
2) The cryo-EM guys have looked at a lot of individual ribosomes with the resolution<br /> to see missing or extra proteins. Would they not have seen the variability you observe? <br /> What about the crystal structures (though you can make an argument that<br /> only complete ribosomes would form the crystals)..
3) The evidence that tetrasomes are translating more efficiently than trisomes is VERY<br /> weak. Indeed, in a paper published contemporaneously with your references 24 & 25, we found that the activity for translating a single mRNA (well actually 2) by reticulocytes making globin was independent of polysome length (Warner & Rich JMB 10, 202, 1964). It might be interesting to try your analysis on reticulocyte polysomes.
4) There is a lot of evidence that RPs are added to ribosomes in a specific order during<br /> a very complicated assembly process. Does your result suggest that this process is oon-going throughout a ribosome’s lifetime?
On 2017-08-28 23:06:31, user David Colquhoun wrote:
We have published a web app that makes it easy to calculate false positive risks. It's at https://davidcolquhoun.shin...<br /> It will calculate the prior probability (that the null hypothesis is false) that you would need to assume to reduce the false positive risk to 5% (say). This seems to me a good way to express uncertainty. I'd be grateful for your views on this.
On 2021-03-22 09:37:10, user Aalok Varma wrote:
This preprint, along with its companion cell atlas preprint, was presented at our Neurobiology Journal Club (NBJC) at NCBS and we thought we’d start an open discussion about these results.
We would first like to note that it was a pleasure reading this paper. We have talked about nerve nets in the neuroscience course on campus and have even speculated about its domain-like organisation. To see a paper that brings in tools to specifically demonstrate this organisation was quite interesting. Moreover, the ability to make transgenics and identify promoters is very exciting for the study of jellyfish behaviour in general, and we look forward to more widespread interest in jellyfish neuroscience as a result.
In the spirit of stimulating discourse, here are some questions we had for you:
1.How many ensembles do you find per animal, and does that match the number of folds/contractions that an animal can make? From some of the figure panels (Fig 5, and Supp Fig 4), it looks like there are between 8-10 of these ensembles. And from Supp Mov 3, it looked like there are 6 folds that an animal can make. So, as a rough estimate, it seems there are ~1.5 ensembles per fold of the margin. Is this consistent across animals?
Have you tried ablating RFamide neurons in the polyp stage? If yes, what happens to polyps? Do they stop feeding, too (which would suggest that RFamide neurons have something general to do with feeding behaviours)? Do medusae develop normally, or do they develop incapable of margin folding (perhaps they may be unaffected because their stem cells can just specify new neurons)?
We were wondering if there is reciprocal inhibition in these animals, i.e. the activation of one margin inhibits the adjacent ones, thus preventing them from folding. There must be inhibitory circuits in these animals - do you know if there is any evidence for this? Also, do you know if the RFamide neurons are excitatory or inhibitory (the results presented in this paper suggest they are excitatory)?
This may be a plan for future studies, but have you had any success with optogenetic stimulation of RFamide neurons? Is their activation sufficient to lead to margin folding? We were also considering the outcome of simultaneous activation, then, of two folds, either adjacent or far away (in relation to the previous question about inhibition).
Even though there may not be cephalisation, there must be some kind of connection or function-based classification of the neurons in the nerve net, right? Motor neurons, for example, vs interneurons. Is there any indication of whether these can be identified among the 14 neuronal clusters found in your other paper (Chari, Weissbourd, Gehring et al)?
Is there any behavioural effect of knocking out GFP in these animals (it must not be an obvious one, even if the answer to this is yes)? But, for instance, do they feed lesser, have lower mating success rates, or show lesser activity than their WT counterparts?
Lastly, as a note more than a question, while some images were colourblind-friendly, we noticed others use a red-green colour combination (Fig 3A, 3D and 4A, for example, among others in the supplemental figures) and we would recommend that they be converted to a colourblind-friendly combination.
We eagerly look forward to hearing your thoughts.
On 2019-01-16 02:10:38, user Snezhana Karpova wrote:
As a Bioinformatics student, I am learning about drug repurposing and found your paper quite interesting. I appreciated the detailed descriptions of the results from the networks and, being new to the field, of the molecular background of schizophrenia. Having recently learned about the network Hetionet, I queried it with the drugs you identified and found that schizophrenia is listed under the predicted treatments of each of them, which would further support your research.
On 2020-03-14 00:03:45, user Wayne Thogmartin wrote:
World Wildlife Fund-Mexico just announced a 2.83 ha estimate of overwinter area occupied by the eastern monarch butterfly population in Mexico this winter (2019-2020). This estimate means that the population falls below the 4.0 ha threshold necessary to support the contention that the population has significantly increased since 2013. The population appears to be bouncing around a level below the 6.0 ha goal level established by Canada, US, and Mexico, and is not at this time credibly increasing in abundance.
On 2019-05-25 05:07:40, user Alex Crits-Christoph wrote:
Thank you for sharing this work!
(1) To try to clear up some confusion in the literature - Dormibacteraeota are referred to as "ANG-CHLX" in Diamond et al 2019 ( https://www.nature.com/arti... ) due to some overlap in time frame when that work was done and the candidate phylum name was proposed and a slow reaction time. It is great to see more analysis of this ubiquitous phylum.
(2) It has been previously reported that sequences of candidate phylum Rokubacteria have been misannotated as Nitrospirae (a sister phylum) in genomic databases ( https://www.frontiersin.org... ) - due to the abundance of Rokubacteria in soils at the eel river czo site I wonder if some of the Nitrospirae data shown here could actually be sequences from Rokubacteria.
On 2024-07-07 15:56:39, user Ben Davis wrote:
Now published at https://www.nature.com/arti...
On 2018-10-19 09:52:52, user Thomas Hope wrote:
FYI: a (significantly edited) version of this paper is now in press at the journal Brain. A link to the published version will be added when available.
On 2024-06-09 05:52:19, user Barend de Graaf wrote:
I found a level of confusion about the ‘SPH protein family’, and the working mechanism of the SI system in Papaver specifically, in this very interesting MS …..
In the introduction, authors mention:
“In poppy, when two members of the SPH protein family (PrsS1 and PrpS1) are cognate, they confer sporophytic self-incompatibility (Foote et al., 1994; Wheeler et al., 2009; de Graaf et al., 2012)”
This is not correct, poppy does not express ‘sporophytic SI’ but ‘gametophytic SI’.
Furthermore, authors also state ‘when two members of the SPH protein family (PrsS1 and PrpS1) are cognate’.
This is not correct either, PrpS proteins are not part of the SPH protein family, instead these are classified as the poppy SI membrane ‘receptor’ proteins that are essential for SI signalling in pollen, male component of SI system in poppy.
On 2020-07-17 08:53:16, user Tartaglia Lab wrote:
Fantastic work! There is very good agreement between our predictions released last April at https://www.biorxiv.org/con... and the interactions (Supplementary Table 1) identified in the human liver cell line HuH7. Comparing the highest and lowest fold changes of experimental interactions, the Area Under the ROC curve reaches values > 0.90
On 2022-12-01 11:05:29, user Benjamin Kyrkjebø wrote:
Are you sure that these sounds are intentionally made by the plants? Could the ultrasonic sounds come from bubbles forming inside of the stem due to water shortages or the weakend stems?
On 2018-04-25 11:53:00, user Sebastain Brauchi wrote:
It looks very useful. Is there a link to download so I can run my data and test the software package?
On 2018-05-24 11:17:10, user Mohamed Seba wrote:
Hello,<br /> Please did you verify the localisation of ori in delta MukB cells ?<br /> Thanks
On 2021-07-23 21:07:12, user Etsuro Ito wrote:
Dear my Lymnaea friends,<br /> Thank you for your wonderful job for the preparation of database of proteomics.<br /> We are now applying LC-MS to our Lymnaea studies and thus your database encourages to advance our studies.<br /> Please continue such useful work to not only Lymnaea researchers but also other molluscan researchers.<br /> Best,<br /> Etsu
On 2019-07-18 20:48:39, user Shahan Derkarabetian wrote:
This has been accepted and is online here:<br /> https://www.sciencedirect.c...
On 2020-10-19 17:57:42, user Krizler Tanalgo wrote:
The published version of this paper is published here https://www.tandfonline.com...
On 2019-06-16 10:39:49, user Nadim wrote:
The published version of the manuscript (doi: 10.1038/s41467-019-10316-8) contains the following minor changes:
On 2021-03-10 20:05:11, user Joseph Ong wrote:
Hadjikyriacou et al. present a novel method of drug screening across three different model research systems: Drosophila larva, C. elegans, and human cell culture (patient-derived fibroblasts). In particular, the authors devise a series of imaging-based assays to determine the effect of their library compounds against lysosomal disorders in these model systems with the goal of identifying novel drugs or drug targets against lysosomal disorders such as mucolipidosis type IV. More broadly, the authors claim that a multi-species method with the goal of identifying conserved biological pathways may lead to more viable treatment of diseases.
The Drosophila system uses larva heterozygous or null for trmpl, an endolysosomal ion channel. In this system, trmpl-compromised pupae should not eclose and result in no living animals. Tracking movement (that is, of a properly hatched adult fly) within a 96-well plate informs whether or not a particular drug rescued the phenotype. For the C. elegans system, a strain with a mutation in cup-5, was used. The mutation resulted in the sequestering of GFP into specialized cells, so visualizing the relative area of green cells to the total cell body served as a measure of lysosomal storage disfunction. In a similar manner, the fibroblast system (with a mutation in TRMPL1) used the dye LysoTracker, and also assessed the total fluorescence signal from the dye (suggesting lysosome accumulation) as a readout of lysosomal storage disfunction.
Screening small molecules (4,185 compounds targeting ~2000 mammalian genes) through this system, the authors find few small molecules that are "hits" among the different species: 3 between human and worm; 3 between human and fly; and 7 between fly and worm; with the addition of one compound shared among all three species [though what these drugs are is not clear; perhaps it is in the supplemental information that was not uploaded to bioRxiv]. Similarly, the shared gene targets of these drugs fell into four main categories: Cdk and Cdk-associated proteins (human and fly), nitric oxide synthesis (fly and worm), and Abl-kinase pathway proteins (human and worm). One gene, ILK, a kinase with diverse functions, was found to be a gene target of all three species. The Cdk and ILK targets were further validated via other chemical and genetic methods, and the authors conclude
I found the multi-species approach delightfully insightful. As the authors point out, despite how similar humans and mice are, studies in humans have consistently failed to recapitulate the results seen in murine models. The approach, then, to cast a broader/wider net to analyze pathways broadly conserved between invertebrate and mammalian tissue culture seems appropriate. Of course, there is a great difference between flys/worms and humans, so care must be taken when interpreting and applying various results across species [but this is the same critique used when we analyze mouse models, so perhaps we should focus on this aspect of the approach as a novelty rather than a fault].
However, the results of the screen were more confusing than what I would have hoped. While it is true that one target, ILK, was a target of all three systems, the Cdk and Cdk-associated proteins were only detected as "hits" within the human-fly collection and not within worms. While there may be many reasons for this discrepancy -- with species differences or using mammalian protein-targeting drugs in a worm being the most obvious -- this observation casts some doubt on the approach. Moreover, save for ILK, the targeted gene pathways between each species seemed to vary widely. Ideally, the most important pathways would have shown as "hits" across all the species tested; however, the pathways seem to have no obvious relationship to each other, except that they are all major signaling/growth pathways. Perhaps it is not surprising that the major hits are all broad signaling pathways -- but I would have hoped that this assay would have allowed convergence on a particular pathway.
Together (that the gene pathways have poor correlation across species and that the Cdks were missed in worms), this suggests that a multi-species approach may be too wide/broad an approach -- particularly, given how well-conserved and well-studied the Cdk system is (and all the ink that has been spilled over palbociclib and its analogues). Perhaps more care in choosing model organisms (say, zebrafish instead of worms) may strengthen the screening approach and result in more physiologically relevant "hits" (as the zebrafish system might be closer to the human system such that the drugs tested may have a better efficacy in a vertebrate rather than worm system; and the "hit" pathways may more closely align with humans/fly in a vertebrate rather than worm system). Nonetheless, to the author's credit, I acknowledge that the Cdks were "hits" in both the human and Drosophila system and validated as targets in subsequent analysis. Perhaps I am too naive in believing that the Cdks should have been hits in all three systems tested -- that would make biology too easy.
Briefer comments:<br /> There is no guarantee that the mammalian target of Drug A is actually Protein X in another organism; for example, while the authors assume that palbociclib is a Cdk4/6 inhibitor in mammalian cells, is palbo also a Cdk4/6 inhibitor in Drosophila and worms? Clarifying the protein targets of drugs in other species is particularly important to address off-target or gain-of-function-type effects of drugs.
The decision to quantify the ratio of LC3-II (the lower band?) to LC3-I + LC3-II (lower + higher band?) is not clear to me. Also, in Figure 4A, marking the higher and lower band as LC3-I/-II would be helpful.
Figure 5A: While I understand it is annoying to do so, the authors should demonstrate the specificity of their siRNAs and demonstrate the knockdown of the proteins of interest at least via qPCR, but preferrably via western blotting. Besides this, I find the results in Figure 5 altogether confusing. Loss of Cdk6 seems to be the only protein here that results in accumulation of LC3-II. Do the authors then suggest that between palbociclib targets Cdk4 and Cdk6, it is only Cdk6 that is involved in the lysosomal phenotype? Moreover, if drugging the kinase ILK leads to a rescue, why does knockdown of the kinase ILK not lead to a rescue? Given that ILK is a top hit in the screen, this result is starkly inconsistent. While a knockdown and inhibition are different, this discrepancy should be resolved. Some molecular biology here (for example, CRISPR to create a kinase-defective version of ILK or generating a Shokat gatekeeper mutation of ILK) may help.
Given that some of the drug targets were B-type cyclins, the omission of Cdk1 is strange. Did the authors test loss or siRNAs against Cdk1? I imagine it would lead to some kind of death, but at least a comment on this is necessary.
On 2015-03-15 22:06:19, user Matt MacManes wrote:
FYI the link ton the software seems to be broken: the correct link is: http://www.bcgsc.ca/platfor...
On 2025-09-16 13:14:17, user Ramon Hypolito Lima wrote:
The article is now published under https://doi.org/10.3390/biology14091204
On 2021-04-29 21:00:08, user Maochang Liu wrote:
How about protection immunity? If the protection immunity is affected by the SARS-CoV-2 variants, we do not know yet. The T cells reactivity can not forecast the disease course.
On 2015-06-02 18:59:54, user Matt MacManes wrote:
A few comments and questions:
I get a core dump with the test data and BWA, but not Bowtie. See https://gist.github.com/mac...
Will you provide the code necessary for the PacBio scaffolding (e.g., the generation of the in silico mate pair reads)
Can you further explain the staged- strategy for larger genome scaffolding?
On 2022-12-14 17:32:54, user Sukanya Mohapatra wrote:
This paper was very extensive and its implications on lengthening lifespan and healthspan are evident. I appreciated that there were different types of evidence to support the claims being made and the experimental processes were detailed. This allowed for a good mix of qualitative and quantitative data being offered. A nice variety of visuals were also included in the figures, such as the images of mouse physiology in the extended data and the diagram of PROTOMAP DARTS in figure 2. I also liked that there were rescue of condition experiments and in general there was a considerable increase in the lifespan of male mice, meaning there is a lot of potential for future research. Finally, I did think it was extensive that two different systems of developmental model organisms were used and that these experiments took a considerable amount of time. Additionally, female mice were included in the study and all organisms were inspected daily to reduce the chance of confounding variables.<br /> I do think this paper could be made even stronger with some reorganizing and adding sections to separate the paper, ex: Introduction, Results, Discussion etc. Furthermore, some additional discussion to emphasize why this focus should be important to us would be helpful. As for statistical improvements, post-hoc tests could be added, and using power analysis or statistical tests to determine sample sizes would have been useful. Sample sizes were also really small with female mice specifically. Explaining the reason for the threshold of the False Discovery Rate would be helpful as well as including it in the figures. As for figure explanations, in terms of mitochondrial “perturbation”, additional context on if this is negative or positive change would be appreciated. In figure legends, it was hard to tell why some terminology was red and why some was black. There was a missing loading control in figure 3D and no quantification of figure 3E. Additionally, sex comparisons in mice could have been more comprehensive. Males needed their activity level measured and the analysis of both males and females for all experiments was sometimes missing. <br /> Overall however, this is a strong paper with very interesting results! I am excited to see what else this lab works on!