Evaluation Summary:

This manuscript reports the CryoEM structure of OmcZ cytochrome nanowires of Geobacter sulfurreducens, the third cytochrome nanowire of Geobacter to be structurally resolved. OmcZ differs structurally from these previously determined nanowire structures, showing a different heme chain configuration. Based on these and other differences the authors speculate about the evolutionary origin of these nanowires and the mechanism of long-range electron transport. This manuscript is an important contribution to the field of electron transfer and will be of interest to everyone working in electron transfer and filament formation and interested in their evolution.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1 agreed to share their name with the authors.)

Evaluation Summary:

This article seeks to address a key question in protein biophysics: are the amino acid positions (and mutations) that influence allostery conserved across homologs of a protein family? Or is allostery implemented by a distinct set of residues that varies amongst homologs? To address this question, the authors follow an innovative approach that combines deep mutational scanning with machine learning. Significant revisions are required to clarify whether the conclusions of the study are well-supported by the data. The work is potentially highly relevant to protein engineers and biophysicists.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

This paper is of interest to organismal biologists and evolutionary scientists who study cognitive and behavioral sex differences including those with interests in the evolution of complex spatial behaviors. Using intensive field monitoring and experimentally induced navigational challenges, the authors examine two different hypotheses for sex differences in spatial ability in three species of poison frog. A rich and complex story emerges, including from the provision of evidence that is consistent with (but not necessarily yet definitively or exclusively in support of) the hypothesis that androgens may inadvertently affect spatial ability.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #2 agreed to share their name with the authors.)

Evaluation Summary:

This manuscript examines the importance of PKA-dependent mTORC1 activation for the weight-loss effects of liraglutide. The work has the potential to provide important insights, but at present is deemed preliminary as it lacks details on the mouse model and control data and needs a more in-depth analysis of the metabolic phenotype.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #2 and Reviewer #3 agreed to share their name with the authors.)

Evaluation Summary:

This paper is of broad interest to biologists and climate modelers that study the impact of environmental stress (especially multiple stressors) on marine life. The authors show that exposure to low pH (ocean acidification) decreases the ability of two mussel species to survive freezing stress. The authors measure multiple biochemical parameters to try and identify the mechanisms underlying the change in freeze tolerance, but future work will be needed to resolve the underlying mechanism in detail.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

This paper describes the use of three well-established mathematical models of cervical cancer to estimate the impact of COVID-19 related-delays in screening access on cervical cancer incidence and delays in diagnosis. Consistent with previous work and the known biology of cervical cancers, the findings that short delays have relatively small effects on population-level cervical cancer risk are reassuring overall, but the impact of screening interval and screening test performance suggest that existing disparities related to screening access may be exacerbated. These results should be useful for policy makers in planning responses to future pandemics or other sources of sudden restriction of screening availability.

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Evaluation Summary:

This paper proposes a computational model that combines biologically detailed elements with more simplified components to provide a comprehensive model of synaptic plasticity. It includes the stochastic character of many of the biophysical processes and introduces a new way to readout the plasticity cascade. It is evaluated against impressively many published experimental studies of hippocampal plasticity. The paper should be of interest not only to computational neuroscience but also to the synaptic neuroscience community but will benefit from a clearer description of assumptions and weaknesses, and a clearer separation of the essential elements in this model from the less critical elements.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1 agreed to share their name with the authors.)

Evaluation Summary:

This manuscript, of interest to those studying the evolution of immunity, investigates the evolutionary history of a recently described herbivore-associated molecular pattern (HAMP) receptor, INR, which perceives the caterpillar-derived peptide HAMP, In11. The authors compare INR homologs to identify evolutionarily conserved residues and use chimeric fusion proteins to investigate specificity. The findings presented are valuable and supported by convincing experiments and analysis.

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Evaluation Summary:

This paper will be very interesting to the large class of neuroscientists who study functional roles of glycoprotein hormone receptors in the central nervous system. It provides detailed tissue-selective gene and receptor distributions of the three anterior pituitary hormones, and thus likely facilitates further relevant studies by other scientists.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1, Reviewer #2 and Reviewer #3 agreed to share their name with the authors.)

Evaluation Summary:

This manuscript compares COVID-19 mortality during the pre-Omicron and Omicron emergence periods in several countries and finds evidence suggesting the Omicron variant was associated with lower mortality than previous dominant variants. This paper will be of interest to infectious disease scientists both for its content and its methods, as it validates that population-level variant frequency can be a good proxy for individual-level variant data to derive insights on variant biology with population data.

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Evaluation Summary:

The findings of the paper are of interest to scientists studying the learning of abstract representations. It provides insights into how feedforward networks evolve during a process of learning to map stimuli onto abstract classes via gradient descent. The results are appealing and the analyses thorough. As well, the paper makes some experimental predictions. It could benefit from a deeper discussion on how the findings may generalize to biologically more realistic networks and tasks.

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Evaluation Summary:

The early differentiation of germ cells, those that will form egg and sperm, is a critical and nearly universal step in animal development. This paper reveals new layers of molecular and cellular regulation that control this process in the fly, and as such be of broad interest to cell and developmental biologists, especially those interested in critical cell fate decisions. The paper contains a wealth of experimental data demonstrating that processes generally thought to be restricted to somatic cells alter the differentiation of germ cells, but provides only limited functional interpretation of the observed phenotypes.

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Evaluation Summary:

This manuscript is of broad interest to neuroscientists studying mechanisms regulating synapse formation and maintenance. Following up on the previous work by the authors on trans-synaptic signaling complexes involving neurexins and cerebellins, this study shows that the basic framework of the complexes operates broadly across different synapses in the brain albeit with subtle differences. The experiments are carefully executed, while some key conclusions could be better supported by additional data.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

The manuscript will be of broad interest to readers in the fields of biochemistry, structural, molecular, and evolutionary biology. It outlines a systematic approach in characterizing nuclear receptor ligands based on the conformational ensemble of the receptor, further exploring the idea that perturbation of the ensemble orchestrates function. The results from the combined use of experiments and simulation are promising, suggesting that the change in the ensemble is responsible for function.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #3 agreed to share their name with the authors.)

Evaluation Summary:

This paper investigates scenarios in which the environment changes during the course of a decision, and shows that optimal behavior can be highly complex. It will be of broad interest to researchers in psychology, behavioural economics, and neuroscience interested in decision-making in real-world tasks. It also awaits detailed empirical testing.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #3 agreed to share their name with the authors.)

Evaluation Summary:

A murine genetic platform reducing fibroblast expression shows normal background indicators of cardiac structure and contractile function. Yet it shows a reduced functional compromise, on ischemic or hypertrophic challenge. This suggests its value for studies of the effect of fibrosis following normal or pathological change.

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Evaluation Summary:

This paper develops evolutionary simulations to identify the type of molecular networks that can give rise to size control. We now know a lot about the functional consequences and underlying molecular biology of different cell size control strategies, but comparatively less about which factors select for particular mechanisms. The authors address this point in an evolutionary framework. They show that the evolution of a specific cell size control mechanism is dependent on the cell cycle structure. The paper will interest researchers in development, evolution, and physics of biological systems.

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COVID-19 vaccine tracker and landscape. (2022, April 22). https://www.who.int/publications/m/item/draft-landscape-of-covid-19-candidate-vaccines

Evaluation Summary:

This paper addresses the mechanism of entrapment of DNA in the cohesin SMC complex. Through a series of biochemical studies, the paper convincingly demonstrates that DNA enters cohesin rings through the hinge and SMC3/SCC1 interfaces. How such entrapment is regulated is important for different biological activities including sister chromatid cohesion and the formation of DNA loops. The paper will be of interest to researchers in SMC biology, DNA recombination and 3D genome organization.

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Evaluation Summary:

Adult zebra finch song is highly stereotyped, and it is driven by correspondingly stereotyped neural sequences in premotor cortical nucleus HVC. By imaging HVC activity in juvenile birds isolated from social contact with tutors, the authors discover that stereotyped HVC sequences can exist even without exposure to tutor song. Interestingly, after tutoring, existing sequences in the HVC of isolate birds transitioned from being uncoupled to vocal output to highly coupled to newly copied tutor syllables. Together, these data provide a fascinating glimpse into mechanistic foundations of how nature and nurture work together to a learned motor sequence.

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Evaluation Summary:

The complete metamorphosis of the higher insects is one of the most fascinating and complex processes in nature: The discrepancy in form and function between larvae, pupa, and adult insects is breathtaking, begging the question of how these forms and functions can so seamlessly follow each other. For the highest-order brain centre of the insects, the mushroom body, the authors provide a masterpiece analysis of this process at the cellular level. Given the breadth and depth of the data that the authors present, the current study will serve as a reference for the field of developmental neuroscience for many years to come; this study is eagerly awaited in the field. Perhaps ever more importantly, the insights into the relationship between evolutionary development and individual development at the cellular level might have a profound and lasting conceptual impact on life and natural sciences.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #3 agreed to share their name with the authors.)

Evaluation Summary:

This study builds on previous observations of arginine depletion in the pancreatic tumor microenvironment, with the goal of developing and using a cell culture medium (TIFM) that better recapitulates nutrient levels in the TME. With this system, the authors identify arginine biosynthesis as an adaptation of pancreatic cancer cells to arginine starvation. This work reinforces a timely message that builds upon the push for optimizing and reformulating cell culture media, so as to improve fidelity, and better recapitulation of physiological/pathophysiological cellular behavior. The latter is in turn critical for translational and therapeutic applications. The work will be of interest to tumor biologists.

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Evaluation Summary:

The research presented in this manuscript is focused on testing the role of peroxiredoxin (Prdx5) and heterogeneous nuclear ribonucleoprotein K (hnRNPK) in bone biology and osteoporosis. Using cell-base and animal models, as well as various experimental methodologies the authors demonstrated that Prdx5 is upregulated during osteogenesis but suppressed during osteoclastogenesis. This novel function Prdx5 was found to be associated with binding and regulation of hnRNPK which controls the expression of genes involved in osteoclastogenesis, such as osteocalcin (Ocn).

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Evaluation Summary:

This paper provides insight into a potentially new genetically defined subset of prostate tumors driven by concurrent loss of two tumor suppressor genes. This study both validates previous findings and provides new data that is compelling overall. With some additional statistical and biochemical evidence to support the conclusions, the work would be of interest to cancer biologists studying molecular mechanisms of prostate cancer.

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Evaluation Summary:

The authors identify a novel developmental role for the beta-adrenergic system in the regulation of mammalian cardiac regenerative capacity. Using genetic and pharmacological loss-of-function approaches, the authors identify a link between Yap and β-adrenergic receptor blockade. The conditional genetic loss-of-function studies are a particular strength of the manuscript and provide strong support for the Gas/Yap-dependent nature of the cardiomyocyte proliferative response to beta adrenergic blockade. Given the widespread use of beta blockers in the clinical management of heart failure, the findings are potentially very important. However, further evidence is required to substantiate the induction of bona fide cardiomyocyte proliferation and cardiac regeneration and clarify the associated mechanisms.

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Evaluation Summary:

This work is a bioinformatic analysis of HML-2-like proviruses found in the genomes of Rhesus Macaques, which convincingly argues that an HML-2 provirus underwent an ancient recombination event with a HERV-K (HML-8) related virus. The authors also provide data to suggest that the recombinant retrovirus may have acquired a distinct mechanism for the regulation of expression of spliced and unspliced transcripts. This paper should be of broad interest to virologists as it uses molecular 'fossil-like' evidence contained in the genomes of modern pirates to document the generation of what could be considered a previously undescribed retrovirus species, through recombination.

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Evaluation Summary:

This paper is an extensive analysis of the underlying basis of desiccation resistance in 50 Drosophila species from diverse habitats. The work suggests that the longer methyl-branched alkanes (mbCHC) of the cuticular hydrocarbons are critical for this resistance. The study, which informs on the evolution of desiccation resistance in flies, is well done, although the main hypothesis is currently only partially supported by coating experiments, which presently lack controls and would be greatly strengthened by "replacement" experiments to add mbCHCs to flies without CHCs. The work is of relevance to evolutionary biologists in general.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

This is an important paper that addresses a key mechanism that underlies the canonical computation of direction selectivity in the retina. By using fluorescence imaging of glutamate release from excitatory interneurons combined with a computational model of dendritic integration, the authors make a convincing case that the kinetics of glutamate release contributes to the direction-selectivity of individual neural processes in retinal neurons. This work will appeal to visual neuroscientists as well as cellular physiologists interested in dendritic computations.

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Evaluation Summary:

In this manuscript, of interest to the fields of animal immunity and epigenetics, the authors investigate the crosstalk between PML Nuclear Bodies and HIRA, a member of the H3.3 histone chaperone complex, during inflammatory stress. This study raises interesting perspectives on how availability of HIRA could be regulated by PML Nuclear Bodies for histone deposition onto interferon-stimulated genes, which in turn, could be relevant for immune-response mediated gene regulation.

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Evaluation Summary:

Synaptic plasticity can take place on the presynaptic and/or postsynaptic sites, and these two sites of plasticity are known to involve distinct mechanisms. Using a combined approach of physiology, Drosophila genetics, and behaviour, this study provides evidence that postsynaptic mechanisms underlie plasticity for olfactory learning. This complements the field knowledge that olfactory associative learning largely relies on the presynaptic mechanism in mushroom body neurons. The paper also emphasizes the similarities in learning and memory mechanisms between vertebrates and invertebrates.

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Evaluation Summary:

The paper provides fundamental information through the identification of an E3 ligase and kinase/phosphatase regulatory machinery that regulates the inner nuclear membrane protein SUN2 using a GFP-based assay. The data reveal a model involving extraction of ubiquitylation of SUN2 from the membrane by p97, which is an important contribution to the field. Although the biochemical evidence is solid on the GFP-tagged SUN2 protein, one question is the extent to which this pathway works on endogenous SUN2 and the extent to which this is a quality control mechanism for turnover of unassembled SUN2 or whether it acts on the fully assembled complex.

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Evaluation Summary:

This is a very fundamental study that challenges the paradigm that histones H3 and H4 are imported to the nucleus primarily as heterodimers. Instead this study provides compelling evidence that H3 and H4 are imported by importin 5 as monomers and dimerize on chaperones in the nucleus. The work is of relevance to colleagues studying nuclear import and epigenetic regulation.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1, Reviewer #2 and Reviewer #3 agreed to share their name with the authors.)

Evaluation Summary:

The authors show that MiR-27a affects osteoclast-mediated bone resorption but not osteoblast-mediated bone formation during skeletal remodeling. Through gene profiling and bioinformatics study authors also identify the specific target of miR-27a in the osteoclast gene. MiR-27a exerts its effects on osteoclast differentiation through modulation of P62. This paper is of interest to scientists within the field of bone biology. The manuscript data analysis and conclusion are clear and directly supporting the previous known findings.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

This study used 2017-2018 Afrobarometer surveys of more than 45,000 individuals to examine the association between the ownership of mobile phones and proximity to a health clinic in 33 African countries. Findings show that about 40% of people own smartphones and those who live closer to health clinics are more likely to own a mobile phone. This manuscript will be of interest to all people who are involved in the design and implementation of mHealth interventions in Africa.

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Evaluation Summary:

Regulation of NAD and its intermediary metabolites is of critical importance in axon degeneration and in neurodegenerative disease. In mammals, the SARM1 NADase has been shown to be a metabolic sensor activated by an increase in the NMN/NAD+ ratio and SARM1 activation then leads to catastrophic energetic collapse and axon degeneration in disease and injury. This manuscript clarifies the role of NMN in activating the axon degeneration trigger dSARM in Drosophila. The authors analyze the signaling role of NMN, a NAD precursor metabolite involved in injury-induced axon degeneration, by overexpressing NMN-D, a prokaryotic enzyme that consumes NMN, using a stabilized version allowing for prolonged NMN depletion, and find that it is strongly protective in several in vivo injury paradigms in flies. This paper will be of interest to those in the neurodegeneration/axon injury field in general as an extensive set of optimized reagents is presented, confirming the crucial role of for exploring NAD-related axon degenerative pathways, and providing tools for neuroscientists to use Drosophila as a model for neurodegenerative research.

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Evaluation Summary:

This work will be of interest to behavioral neuroscientists with a focus on social behavior. The interrogation of the transcriptional signature of pair-bonding, in both short and long-term, is unique and made possible with the use of the monogamous vole. That there is a "degrading" of the transcriptome of pair bonding following separation is evident but there is a gap in understanding how the gene expression changes relate to behavior.

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Evaluation Summary:

This study presents an in-depth analyses of carbon oxidation state and hydration state of proteomes in different taxa and environmental settings, which contributes to our understanding of how microbial communities are shaped by their surroundings. The study has merit, but there also some technical weaknesses.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1 agreed to share their name with the authors.)

Evaluation Summary:

Deposition of hyperphosphorylated misfolded tau is a hallmark of many neurodegenerative diseases, but the exact mechanisms by which misfolded tau spreads to adjacent areas of the brain are not known. In this manuscript, which will be of broad interest to cell biologists and neuroscientists, the authors suggest that tau fibrils that translocate directly through the cell membrane induce aggregation of cytosolic tau. While the results appear stunning, there are alternative explanations to the authors' hypothesis that require further investigation.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

Vignogna et al. used yeast genetics, experimental evolution and biochemistry to investigate human congenital disorders of glycosylation, often caused by mutations in PMM2. They took advantage of the observation that the budding yeast gene SEC53 is almost identical to human PMM2, and used experimental evolution to find interactors of SEC53/PMM2. Mutations in genes corresponding to other human CDG genes, including PGM1, were overrepresented. The mechanisms of how reduced pgm1 activity could compensate for defects of sec53 are not yet clear.

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Evaluation Summary:

The authors of this study characterize human Fip1, an important component of the 3' end processing machinery. They use X-ray crystallography to determine the molecular basis of the interactions between Fip1 and CPSF30 (at a 2:1 stoichiometry) and between Fip1 and CstF77 (at a 2:2 stoichiometry). Together with biochemical assays, they suggest that Fip1 may be central to regulating transitions with CPSF. The work will of relevance to colleagues interested in transcription and RNA processing.

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Evaluation Summary:

This is an in-depth and rigorous analysis of transcriptomic changes in myogenic cells lacking dystrophin. Studies are made in both a mouse model and human subjects. the paper bears on possible roles of such alterations in pathogenesis of Duchenne muscular dystrophy. They draw attention to new therapeutic interventions for this condition.

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Evaluation Summary:

Individual cells may act in response to stimuli or in a self-organized fashion. The relative weight of these two modes determines in the end to which degree cells or rather organs/organisms carry function. This study reports an example of very complex self-organization of actin waves as the coexistence of slowly moving broad waves of high F-actin concentration and rapidly propagating planar F-actin pulses. The paper is interesting for everybody interested in conceptual questions like signalling versus self-organization, in cellular morpho-dynamics and theory of dynamic patterns.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

This work is of interest to neuroscientists and medical professionals involved in the study of Alzheimer's disease and related neurodegenerative conditions. The findings provide important information about how potential network-based structural and metabolic imaging biomarkers are associated with memory performance during distinct disease stages, in line with previous hypothetical biomarker models. The study is conceptually and methodologically sound, although some aspects of the analysis and reporting of the results could be further clarified.

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Evaluation Summary:

Barber et al present a manuscript discussing predictive factors for chemotherapy efficacy in head and neck squamous cancer (HNSCC). The paper is well written, and its style/formatting are optimal. The baseline signature moderately predicted outcome, and the data after one cycle further improved the algorithm, though this decreases its utility as a pure predictive tool. It is interesting that a subpopulation of monocytes, a subset of white peripheral cells long suspected to correlate with outcomes in HNSCC was one of the key drivers of the algorithm. However the overall impact in the field of this work seems limited by a number of factors, including that the authors focused on immune cell subpopulations and exosomes, which narrows the scope (no cytokines or other biomarkers were included); the signatures were not prospectively validated on an independent cohort; the algorithm was developed around a first-line therapy that is no longer considered to be the standard of care for HNSCC; and, while most of the conclusions are supported by the data, some of the caveats (such as the lack of a validation cohort, key in predictive biomarker development), are not addressed.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

The study is overall well-planned and the amount of data presented by the authors is impressive. The work nicely incorporates animal-level physiology (echocardiography data), tests for known canonical markers of hypertrophy, and then delves into an unbiased analysis of the transcriptome and proteome of LV tissue in bulk. The techniques and analyses in the study are adequately executed and within the realm of expertise of the Lakatta laboratory. This study is a necessary and crucial first step to extensively phenotype this mouse line and generate hypotheses for further work.

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Evaluation Summary:

Park et al.'s work provides insight into the infection processes of the human pathogen Coxiella burnetii with unprecedented detail. Their time course of cellular infection reveals the timing of key events and detects a previously unrecognized membrane structure. This work will shed new insight into the infection process of this pathogen allowing new targets for the treatment of infection with Coxiella.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #2 agreed to share their name with the authors.)

Evaluation Summary:

In this paper, the authors show that autobiographical memory recall is related to a specific biophysical property of the parahippocampal cingulum bundle, the so-called MR g-ratio. This paper will be of interest to neuroscientists studying associations between brain structure and cognitive processes. The data support the main conclusions of the paper. However, it is unclear how reliable the results are and whether the findings would generalize to situations beyond the specific one studied.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

This study seeks to develop the use of a FRET-based sensor for the formation of the folded 'interacting heads motif' structure for cardiac myosin, which is thought by some to represent a super-relaxed state with lower basal ATPase activity. This study offers some evidence that there is a relationship between the super-relaxed state and the 'interacting heads motif' structure, and that a specific dilated cardiomyopathy mutant in this myosin stabilizes the 'interacting heads motif' conformation. This paper will be of interest to muscle and cardiovascular biologists as it provides important insights into the correlation of structural and functional states of motor proteins in the context of cardiac muscle. The data qualitatively support this correlation and suggest a new mode of action of disease-causing mutations that lead to impaired contractile function.

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Evaluation Summary:

This study by Krug et al. uses the turquoise killifish, an emerging model for biomedical research, to generate a valuable live-imaging platform. Initially, the authors generate a transparent killifish they named Klara. Specifically, using optimized CRISPR approaches, they simultaneously inactivate three genes that are required for the formation of primary pigment cells in fish (melanophores, iridophores, xanthophores) and next, to monitor cell-cycle arrest and cellular senescence, they generate a cdkn1a-GFP reporter line using HDR-mediated integration. The paper would benefit from a further description of the HDR approach, the genetic models, and improved figures. Together, this platform will be an extremely valuable resource with broad application, including for aging research, physiology, toxicology, and regeneration.

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Evaluation Summary:

This pre-registration study by Kerrén et al. used a proactive interference task in combination with MEG recordings on humans to test predictions of a previous computational model postulating that neural representations of competing memories are associated with varied phases of the hippocampus theta-band rhythm. Their results largely confirmed the hypothesis and suggest that reactivations of target and competitor memories indeed occur at different phases of theta oscillations, which is further related to the intrusion effect in behavior.

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Evaluation Summary:

Using an elegant combination of cutting-edge techniques, the authors show that in the neuromuscular junction of the nematode C. elegans two different classes of voltage-activated calcium channels differentially trigger exocytosis of distinct pools of synaptic vesicles, one docked to the active zone and a second one localized more distant from the active zone. These findings will be of broad interest to neuroscientists interested in the mechanisms of calcium-mediated release of neurotransmitters at chemical synapses.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1, Reviewer #2 and Reviewer #3 agreed to share their name with the authors.)

Evaluation Summary:

The authors describe a newly developed software, ProteInfer, that analyses protein sequences to predict their functions. It is based on a single convolutional neural network scan for all known domains in parallel. This software provides a convincing approach for all computational scientists as well as experimentalists working near the interface of machine learning and molecular biology.

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Evaluation Summary:

The authors aim to tackle a fundamental question with their study: whether there is a direct age-associated increase of transcriptional noise. To investigate this question, they develop tools to analyze single-cell sequencing data from mouse and human aging datasets. Ultimately, application of their novel tool (Scallop) suggests that transcriptional noise does not change with age, changes in transcriptional noise can be attributed to other sources such as subtle shifts in cell identity. This study is in principle of broad interest, but it currently lacks a definitive demonstration of the robustness of Scallop. Systematic testing of this new package would ultimately strengthen the key conclusion of the work and give additional users more confidence when using the tool to estimate expression noise.

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Evaluation Summary:

In addition to providing extensive proteomics profiling datasets. this manuscript is fundamental that sheds light on the importance of appropriate experimental design for mouse disease model which have been overlooked so far. The results look quite solid based on the proper methodology. This type of work is extremely valuable to many biomedical scientists in the field for conducting reproducible research especially in the preclinical studies and properly interpreting the results.

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Evaluation Summary:

This paper will be of interest to scientists within the field of neuromuscular disorders and has potential clinical relevance. It reveals a novel targeted strategy to improve the pathophysiology of children with neonatal brachial plexus injury. The key claims of the manuscript are well supported by the data, and the approaches used are thoughtful and rigorous.

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Evaluation Summary:

This is a paper that will be of particular interest to neuroscientists with a focus on food intake and neural responses to food ingestion. This paper provides new insights into how the body responds to weight loss and helps identify those that may not be successful.

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Evaluation Summary:

The authors use theoretical models to examine the joint evolution of different cheating strategies: selfish cheating (not contributing to a common good), and manipulative cheating (inducing a competitor to preferentially provide benefits to the cheat). The models seem well formulated and the results robust. That said, improvements could be made to the presentation to clarify the assumptions and wider applicability of the model. An improved article would provide a better understanding of the mechanisms behind cheating, which would be of interest to readers working on the evolution of cooperation, potentially opening up new directions for theoretical and empirical work.

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Evaluation Summary:

This work has potential value for researchers in several areas of cognitive and systems neuroscience. Range adaptation is a widespread property in neuronal circuits, and a network mechanism that relates neuronal adaptation to behavioral outputs is a valuable addition to the literature. However, limitations in the current framing and analyses leave some uncertainty about the interpretation of the results and their broader applicability.

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Evaluation Summary:

This manuscript tackles the timely and interesting research question of whether meningeal lymphatic drainage is required for the control of brain infection with Toxoplasma gondii. It contains a sophisticated experimental approach using cutting-edge methods, it has an easy-to-follow narrative, and comes up with an interesting albeit negative finding which the authors even tried to explain by an additional set of experiments. Although there are some limitations and weaknesses of the paper in its present form it will certainly contribute to the growing body of literature on how the once "immune-privileged" CNS is protected against environmental challenges.

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Evaluation Summary:

This manuscript shows that mutations in the gene encoding an enhancer chromatin-modifying enzyme MLL3 cooperate with Myc overexpression to drive hepatocellular carcinoma in mouse models. The authors identify Cyclin Dependent Kinase Inhibitor 2A (Cdkn2a) as a critical direct target gene of MLL3. Overall, the manuscript makes a compelling case that MLL3 is a hepatocellular carcinoma tumor suppressor that directly binds and activates the Cdkn2a locus. This study provides important insights for cancer biologists and those interested in specific epigenetic mechanisms that regulate liver cancer development. Editorial and some experimental suggestions were made to strengthen the work.

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Evaluation Summary:

By performing homeostatic longitudinal IgH repertoire analysis of human memory B cells and plasma cells, authors draw two major unique conclusions; first, a high degree of clonal persistence in individual memory B cell subsets with inter individual convergence in memory B and plasma cells; second, reactivation of persisting memory B cells with new rounds of affinity maturation during proliferation and differentiation into plasma cells. These conclusions provide a significant insight into how human memory B and plasma cells are generated in a homeostatic condition.

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Evaluation Summary:

Keine et al study the role of the RhoGTPase Rac1 in neurotransmitter release by ablating this protein at an age when synapses are in an almost mature stage. They describe an increase in synaptic strength, which they interpret as an increase in release probability or fusogenicity of synaptic vesicles. They also describe subtle effects in the timing of release, which point towards a mild defect in positional priming. The study delivers important information on the role of Rac1.

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Evaluation Summary:

This study develops a resource allocation model for E. coli growing under steady-state conditions. The model describes both growth rate and yield and has been subjected to validation by comparison with a compiled data set. The manuscript addresses an important problem of interest to a wide range of investigators. At the same time, the authors would need to explore different assumptions for the housekeeping proteome fraction (phi_q) to ensure the model is robust.

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Evaluation Summary:

The current study examined in detail the role of oxytocin neurons in the hypothalamus in regulating food intake. The current study extends our understanding of the role of this peptide in regulating complex behaviors.

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Evaluation Summary:

Hu and colleagues describe the discovery and characterization of a new class of reversible palmitoylation (PLM) binding site TEAD inhibitors. X-ray co-crystallographic analysis reveals that the ligand class, identified from a screen of 30,000 small molecules, binds to a new site within the auto-PLM site. The TM2 lead compound inhibits the growth of NF2-deficient cell lines. The discovery has the potential to significantly impact the design and development of new effective TEAD inhibitors. Some clarification or additional data are required to support and justify some of the authors' claims regarding the molecular significance of this new class of inhibitors.

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Evaluation Summary:

Recent studies of the brainstem locus coeruleus (LC) noradrenaline system have demonstrated a partially modular organization in which specific classes of neurons can serve distinct functions or exhibit module-specific co-activity. However, how noradrenaline cell classes function in a modular way is not clear. The authors have accomplished a technical feat by recording up to eight LC neurons at once using ex-vivo, multi-patch recordings. In doing so, two empirically-derived classes of LC neurons were identified and the analysis of electrical coupling between these neurons established some principles of local circuit communication occurring preferentially within the defined cell classes.

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Evaluation Summary:

This manuscript is of interest to individuals working on genome stability and B lymphocyte development. Using knockouts for the genes encoding the structure-selective endonucleases GEN1 and MUS81 in mice, the authors show that the absence of both proteins is incompatible with embryonic development, with selective loss in mature B-cells inhibiting germinal center formation. This is the first study of these enzymes in an organismic context and in primary cells, revealing insight into the in vivo consequences of loss of MUS81 and GEN1 functions not previously accessible through studies in cultured cells.

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Evaluation Summary:

This paper explores the use of 2D high-resolution template-matching (2DTM) to locate and discriminate highly similar macromolecules within cryo-EM images of focused ion beam-milled cells. It demonstrates that differences in the 2DTM signal-to-noise ratios for located targets against multiple search templates can effectively segregate a mixed population of similar structures, as well as present a formal analysis strategy for probabilistic assignment of species within the mixed population. Because the identification of distinct structural states of macromolecular complexes inside the cell is a fundamental problem in 3D visual proteomics, this paper will be of broad interest to both structural and cell biologists.

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Evaluation Summary:

The notion of transcription factors as composed of interchangeable parts where DNA binding activity can be separated from activation activity has been a dominant paradigm in molecular biology for decades. However, recent evidence suggests that activation domains may contribute to binding specificity as well. This paper describes the use of single-molecule imaging of endogenously tagged transcription factors to dissect how transcription factors move in the nucleus and how these dynamics are related to functional protein domains. These results will be of interest to the transcription and gene regulation fields, but the conclusions require additional experimental support.

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Evaluation Summary:

The authors describe their work on an atlas of associations between polygenic scores for 129 different traits representing a variety of quantitative phenotypes and diseases, and a large set of metabolites measured in up to 83,000 participants in the UK Biobank. These associations are all available via a public browser, and may be used to identify candidate intermediate phenotypes, as well as potential biomarkers of disease.

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Evaluation Summary:

This study investigates the potential role of kin selection in driving social behaviours among siblings in wild mountain gorillas. Using an impressive dataset of 14 years for 157 individuals the authors find some evidence for kin recognition in guiding biases for affiliative and aggressive behaviours. However, the results of the current study will be more convincing if a number of major concerns with the analysis can be addressed.

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Evaluation Summary:

This paper will be of broad interest to clinicians and scientists in the area, providing clinical trial data on how the efficacy of monoclonal antibodies targeting SARS-CoV-2 varies according to the variant of concern. The clinical outcome data were consistent with previously reported in vitro data, which are being used to inform the clinical use of monoclonal antibodies. However, as the trial was stopped early, conclusions regarding the efficacy and safety of the individual monoclonal antibodies are limited.

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Evaluation Summary:

The origin of virulence in pathogenic microbes is not understood for many microbial species. The concept of 'accidental virulence' was proposed as a mechanism by which a microbe could acquire the capacity for virulence through interaction with other microbial species, such as amoeba. This paper adds an important new dimension to that concept by showing that the capacity for virulence can emerge from abiotic interactions, such as adherence to plastic.

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Evaluation Summary:

The work by Volante et al. studied a new plasmid partition system, in which the authors discovered that four or more contiguous ParS sequence repeats are required to assemble a stable partitioning ParAB complex and to activate the ParA ATPase. The work reveals a new plasmid partitioning mechanism in which the mechanic property of DNA and its interaction with the partition complex may drive the directional movement of the plasmid.

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Evaluation Summary:

In this interesting study the authors combined innovative object-based conflict assays with optogenetic silencing to probe the role of the perirhinal cortex in motivational conflict. The manuscript is well-written and the approach was adequate. The findings provide new insight into how conflicting motivation is processed and would benefit from additional analysis and experimental investigation to more conclusively support the interpretations.

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Evaluation Summary:

In this manuscript, the authors identify enhancer-associated (e)RNAs that are specifically associated with esophageal adenocarcinoma. Based on combining the data with analyses of patient gene expression data and epigenetic data from cell lines, they conclude that eRNAs are markers of enhancers relevant to the transition from Barrett's esophagus to cancer. This work provides new insights into the epigenetic alterations that occur in cancer progression, and it will be of interest to the cancer and epigenetics fields.

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Evaluation Summary:

This paper describes results obtained from multi-cellular imaging of CA1 cells using large-field-of-view miniscopes in rats performing a shock avoidance task. By exploiting behavioral (barriers) and pharmacological (scopolamine) manipulations the authors explore cell remapping dynamics during aversive learning. This work will be of interest to the neuroscience community by setting new methodological standards and providing data for across-species comparisons.

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Evaluation Summary:

The current paper is of interest to cell biologists studying ciliogenesis and specifically vertebrate photoreceptors, which are specialized cilia. The study shows that mutations in the small GTP binding protein ARL3 known to cause dominant inherited retinal dystrophies in humans result in ARL3 hyperactivity, disrupting the normal ciliary gradient of ARL3 activity and leading to altered retinal development. The authors demonstrate restored normal nuclear distribution by overexpression of ARL3 effectors, suggesting that the active mutants disrupt nuclear migration, at least in part, by sequestering ARL3 effectors. Overall, the experiments are properly controlled, executed, and analyzed and involve a series of extensive biochemical analyses complemented with in vivo phenotypic assessment. The development of a method to analyze snapshots of the interaction between ARL3 and its interactors is also a strength of the paper, however, significant concerns remain regarding links between nuclear migration failure and ciliogenesis in the outer segment, and alternative possibilities that could explain the phenotype of the ARL3 Y90C mutant with respect to its sequestration of the GEF ARL13B. Addressing these major concerns would improve the manuscript and could have considerable impact on the field.

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Evaluation Summary:

The authors show the utility of an AAV-based approach in non-human primates to develop an improved model of Huntington's disease. They have presented a very thorough, carefully executed, body of work that will be of benefit to a range of researchers studying HD or developing therapies for HD. While this extends the work from an earlier paper (that presented the tools used to induce phenotypes) the results presented are new, relevant, and important to the community.

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Evaluation Summary:

In this work, the authors test a multivalent vaccine design they term Mos-tri-RBD, consisting of three linked spike receptor binding domains, one based on Omicron sub-lineage BA.1 and the others with different SARS-CoV-2 variant mutations. Immunization with this construct either as a prime or booster vaccine resulted in better neutralization of the Omicron and Beta variants relative to the same design, but with the ancestral receptor binding domain, and supports the notion that vaccination with variant sequences may broaden the neutralization capacity of vaccines against divergent variants.

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Evaluation Summary

This study investigates the question of whether distinct brain areas differentially encode time during the learning of a simple motor timing task. The key novel result is that early in training the dynamics of the medial prefrontal cortex (mPFC) provides the best code for time, but later in training, the basal ganglia and in particular, the striatum provides a better code. In addition, the study shows that inactivation of mPFC produces a delayed learning effect, while inactivation of the striatum after learning led to impaired performance. The observation that temporal coding and the necessity of brain area for task performance transfers from medial prefrontal cortex to the striatum during learning is an intriguing observation for our understanding of the neural mechanisms underlying temporal processing in sensorimotor control.

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Evaluation Summary:

In this manuscript, the authors explore the circuit mechanism underlying mating-induced change of odor preference in Drosophila. Olfactory cues during mating induce a long-lasting increase in attraction to polyamines in female flies. The authors use a combination of neurogenetics, imaging, and behaviour to identify elements of the mushroom body and lateral horn circuitry involved in this behaviour. The importance of mushroom body plasticity in female postmating changes highlights a novel pathway for these changes and reveals the variety of mechanisms by which the brain can encode experience and adapt behavior. This paper will be of interest to scientists within the field of reproductive behaviors and neuroscience of internal states.

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Evaluation Summary:

This study uses media-based conversion of stem cell cultures towards to investigate how cell cycle regulation affects the transition of cell populations between pluripotent and differentiated states. Through a detailed analysis of cell cycle properties in different primed subpopulations, under a range of growth conditions, the authors propose that both the maintenance of pluripotency as well as the conversion towards a more differentiated state is influenced by selective shortening of the cell cycle in different primed subpopulations. By using new reporter systems and long-term imaging, this study thus sheds new light on the old question of whether extracellular signals control differentiation in cell populations through selection or induction.

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Evaluation Summary:

Prior work has linked posterior urethral valves (PUV), a common cause of end stage renal disease in children, with chromosomal abnormalities and rare copy number variants, but the genetic causes of PUV remain incompletely defined. In this study, the authors have used diverse ancestry whole-genome sequencing association studies to identify two novel genes and an enrichment of rare duplications and inversions affecting candidate cis-regulatory elements as possible causes of this rare condition, illustrating the potential for this approach to other rare conditions.

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Evaluation Summary:

This manuscript reports a new method for high-throughput analysis of C. elegans feeding behaviour that overcomes shortcomings of existing methods. It is a useful technique that will be interesting for scientists studying feeding dynamics in worms.

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Evaluation Summary:

This manuscript describes cellular and developmental defects at late embryonic stages during Wolbachia-induced cytoplasmic incompatibility (CI), which occurs when male insects harboring the endosymbiont bacteria Wolbachia fertilize eggs of uninfected females, triggering embryonic lethality, usually at the first nuclear division. This work presents evidence that the mechanism of late embryonic defects is independent from the ones responsible for early embryonic defects. The experiments are technically superb, and the strength of evidence provided is compelling, including beautiful single-embryo PCR analyses and convincing light microscopy. While the overall significance might be limited, the knowledge will be useful to those in the fields of cytoplasmic incompatibilities and insect embryo development.

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Evaluation Summary:

This manuscript, contains fundamental findings that substantially advance understanding of an important research question, mostly uses appropriate and validated methodology in line with the current state-of-the-art, with good support for the claims, and the message of the manuscript will have a profound and lasting influence on neuroscience. In essence, the manuscript reports that dopamine converts spike-timing-dependent synaptic depression into potentiation that requires cAMP/PKA second messenger cascade and protein synthesis. The mechanism enables a separate synaptic input to induce heterosynaptic potentiation in previously primed synapses, which is shown in a network model to have desirable computational properties. The significance of the findings is threefold: First, it is the longest-lasting synaptic eligibility trace identified so far; second, the mechanism enables memory linking between temporally separate events; and third, it indicates a novel function of postsynaptic reactivation events. In addition, the finding may inspire new reinforcement learning algorithms in machine learning.

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Evaluation Summary:

This work will be of interest to the field of researchers that generate human stem cell-derived kidney organoids to model genetic kidney diseases. It describes a novel and crucial role of the protein CEP83 in mesoderm patterning, which further determines whether kidney tissues can form correctly. Using cutting-edge technologies the authors provide strong data, which support the key claims of this manuscript. This work is of high impact due to the relevance of CEP83 mutations in human kidney disease.

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Evaluation Summary:

This manuscript describes de novo dominant toxic mutations in CRMP1 in 3 probands with a shared neurodevelopmental phenotype. The authors show that the mutations lead to reduced protein production from recombinant expression and that the mutations correlate with shorter neurites in cultured cells. This is the first report of mutations in CRMP1 in humans, encoding a cytoskeletal regulator protein. The results could have implications for physicians, geneticists, neurodevelopmental scientists, and cell biologists.

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Evaluation Summary:

The study is of interest to researchers in the field of cell biology, especially mechanosensing. The work identifies a new context to evaluate the activity of MSL proteins in mechanosensing by identifying two novel suppressors of MSL10 as components of the ER-PM contact sites (EPCS). The work has significance for both the plant and the animal science community providing the basics for various avenues of further research in the area of mechanobiology.

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Evaluation Summary:

This manuscript tackles the important question of what proteins regulate asymmetrical cell division in Mycobacteria. This will be of interest to all individuals interested in bacterial physiology. The data are sound, but some of the conclusions need to be tempered or bolstered, in relation to the models proposed.

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Evaluation Summary:

This manuscript is an important body of work that addresses the role of the integrated stress response (ISR) and the role of the GCN2 protein kinase in prostate cancer. The studies comprehensively elucidate how GCN2 and amino acid transporters and uptake promote prostate cancer proliferation, as well as the therapeutic potential of inhibiting this pathway. This work, therefore, provides insights for both identification of new mechanisms and experimental therapeutics in prostate cancer.

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Evaluation Summary:

Fluid flows in networks are ubiquitous, and in many living systems the networks are not static but instead can rearrange over time. Using vascular networks formed by the slime mold Physarum polycephalum, Marcbach et al. demonstrate that there is a time delay between the change in the flow and the change in the network geometry. They present a mechanical model of vein-radius adaptation leveraging the negative normal stress response of the actin cytoskeletal network lining the vein walls. More generally, the authors make use of the unique advantage of this simple model vascular system to connect the local shear rate to the network reorganisation and how it depends on its architecture. There are features to their work that are new to the literature and that can be impactful in advancing the field.

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Evaluation Summary:

This manuscript examines the role of transposable element (TE) expression and the transcription factor FOXO on aging of Drosophila melanogaster. Increased TE expression in aged organisms compared to their younger counterparts has been observed in several animals, including Drosophila. Here, the authors show that artificially inducing transcription of a specific TE can reduce fly lifespan and exacerbate some aging phenotypes-paraquat resistance and rhythmicity. The authors also argue that the detrimental effects of increased TE expression can be rescued by FOXO expression, although this is less convincing.

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Evaluation Summary:

This paper establishes a visually mediated gap-jumping behavioral task in freely moving mice, and shows that mice can perform the task using only monocular cues with little performance deficit, perhaps at the cost of additional active sensing movements before executing the jumping maneuver. Further, using acute optogenetic inhibition, the authors establish that the primary visual cortex is used to perform this task. Using vision to judge distance - such as the width of a gap to be crossed - is crucial for survival across taxa, and this new paradigm could be informative to those interested in using mice to study such vision-based estimation under naturalistic conditions.

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Evaluation Summary:

Yang et al. provide a scientifically sound and compelling manuscript characterizing mid-to-late gestation trophoblast and decidual organoids as ex vivo models to study vertically transmitted microbial infections, using human cytomegalovirus as a model pathogen. They demonstrate organoids have tissue-specific immunological responses and susceptibilities to viral infection.

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Evaluation Summary:

This paper will be of interest to researchers in the fields of motor control, visual perception, learning and brain plasticity, sight loss and rehabilitation. The paper shows the contributions of sensory-motor experience to the development of visuo-motor recalibration abilities using careful experimental methods and analyses, comparing a rare population of late-operated cataract patients with control groups.

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Evaluation summary

Ribonucleotide reductases (RNRs) have fascinated biologists and chemists, as these enzymes catalyze the conversion of ribonucleotides (NDPs or NTPs) to deoxynucleotides (dNDP or dNTPs), which are essential for DNA biosynthesis in all organisms. Given this role, they have been postulated to be the link in the transition from an RNA/protein to a DNA world. In addition, RNRs use an array of protein, metal-based, and nucleotide radicals for the reaction they catalyze. This paper creatively combines two methods of analysis to propose a new evolutionary model for the diversification observed for the RNR family into the three classes: I, II and III. The work is of interest to students of molecular evolution, RNRs and colleagues interested in the origin of life.

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Evaluation Summary:

The role of satellite glial cells in the sympathetic nervous system has not been extensively investigated. Using targeted ablation of SGCs, the authors demonstrate that satellite glia has a profound effect on neuronal activity and the survival of sympathetic neurons. The peripheral sympathetic system is responsible for a wide spectrum of activities, including blood flow, heart rate, respiration, and digestion.

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Evaluation Summary:

Kikumoto and colleagues explore the question of how stimulus- and response-related mental representations are stored and selected in working memory. The authors use a combination of decoding and representational similarity analysis on EEG data to provide evidence for conjunctive representations of action plans. This work would potentially be of great interest to readers in the field of working memory, motor preparation, and selective attention.

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Evaluation Summary:

This paper presents an exploitation/exploration paradigm using a model-based approach in 18 patients treated with GPi DBS for Tourette's syndrome. Their main observation is that despite DBS (used as a proxy of GPi inhibition) doesn't have any effect on the overall performance of the subjects, it has a significant effect on the probability of exploration. This work will be interesting for scientists working in fundamental and clinical neurosciences.

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Evaluation Summary:

In this highly innovative study, the authors use combinatorial gene expression analysis to study the development of the gill arch of the little skate. This process depends on Shh and Fgf ligand-derived endodermal cells at the endoderm-ectoderm junction, providing insight into not only the fundamental developmental mechanisms regulating brachial arch formation in cartilaginous fishes, but also highlighting a unique relationship between inhibition of Wnt and Hedgehog signaling pathways in the context of early appendage development. The work will be of interest to developmental biologists and colleagues studying Wnt and Hedgehog signaling pathways.

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Evaluation Summary:

This work is valuable for those who study how diet and metabolism impact neurological function, specifically learning and memory since it investigates the impact of high-fat diet intake during the preadolescent period on memory performances. The data convincingly showed the possibility to reverse memory deficits related to obesity by manipulating selected hippocampal circuits. The claims would benefit from additional controls and analyses.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1 agreed to share their name with the authors.)

Evaluation Summary:

This paper, of interest to both basic scientists and clinicians, addresses the clinically important condition of reduced muscle mass in human chronic liver disease. It seeks causative mechanisms under these conditions. It uses in vivo and in vitro techniques to draw associations between bile acid concentrations and muscle disease. They implicate a specific bile acid for the first time.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

The derivation of cardiomyocytes from the first and second heart fields is a well-studied phenomenon in animal models, however, due to ethical concerns, has not been studied in human heart development. The authors utilize hiPSC technology to demonstrate that it is the FHF and SHF that give rise to cardiomyocytes which is an important step in furthering our understanding of early human heart development.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

Detecting and quantifying balancing selection is a notoriously difficult challenge. In this study, the authors use both empirical analyses and simulations to characterize the amount of balancing selection in the human genome, focusing specifically on the contribution of polymorphic deletions. These results will be of interest to population and human geneticists. Although the presented evidence supports some degree of balancing selection among shared ancient polymorphisms, these findings primarily rely on the elimination of alternative explanations rather than a direct estimation of the extent of balancing selection. The conclusions are also based on simulations of a single demographic model without testing the robustness to other plausible model parameters.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

This manuscript is of broad interest to readers in the field of Alzheimer's disease, neurodegeneration, and single-cell omics. The identification of shared pathways across different cell types and ages is an important contribution to our understanding of APOE4 gene regulation in a cell type-specific manner. A combination of snRNAseq in APOE mouse models and human iPSC cells supports the key claims in the paper.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

This study will interest basic and clinical scientists and, potentially, device manufacturers interested in the regulation of heart rate in health and disease. A major control of the heart is from the nervous system originating in a neuronal cluster sitting outside the heart called the stellate ganglia. This study has identified the neural code associated with a healthy heart and describes how it changes in disease. Whether the change in code is cause or effect remains equivocal although normalising the code may have valued therapeutic benefit. The study opens the way for sophisticated mimicking of healthy neural code applied to a diseased heart as a potential electroceutical approach.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

DNA double-strand breaks are a major threat to genome stability. In this study, the roles of two DNA repair proteins, Brc-1 and Smc-5, are investigated in C. elegans meiotic cells, to investigate the DSB repair pathways using the homolog or the sister chromatid as template . The results highlight a regulatory role of Brc-1 and Smc-5 as repressors of repair with the sister chromatid. The experiments are generally well executed, and the findings will be of interest to the DNA repair and C. elegans meiosis communities.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1 and Reviewer #2 agreed to share their name with the authors.)

Evaluation Summary:

The study presented in this manuscript is of interest to cartilage biologists studying the mechanisms of chondrocyte differentiation. The authors investigated transcriptomic profiles of hESC-derived articular and growth plate chondrocytes. To characterize the regulatory landscapes with respective transcriptomes, they mapped chromatin accessibility in hESC derived chondrocyte lineages and mouse embryonic chondrocytes using ATAC-sequencing and revealed lineage-specific gene regulatory networks. They further validated functional interactions of two transcription factors, Runx2 and RELA, with their predicted genomic targets. This study could help us understand chondrocyte differentiation.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. The reviewers remained anonymous to the authors.)

Evaluation Summary:

This study presents novel experimental data from a mutant mouse model lacking microglia (Pu.1-/- mouse line), indicating that these cells have an important role in the embryonic establishment of critical neural circuits in the brainstem generating breathing motor behavior in mice. This paper is of interest to scientists within the field of microglia as well as respiratory neurobiology as it provides original key information about a new role of microglia in the embryonic development of respiratory circuits. Overall, the data are clearly presented and rigorous. Some of the conclusions should be toned down as the data in another microglia depletion model do not support some claims of the paper.

(This preprint has been reviewed by eLife. We include the public reviews from the reviewers here; the authors also receive private feedback with suggested changes to the manuscript. Reviewer #1 and Reviewer #3 agreed to share their name with the authors.)