Molecular Systems Biology最新文献_第8页

Unique transcriptomes of sensory and non-sensory neurons: insights from Splicing Regulatory States. 感觉神经元和非感觉神经元的独特转录组：剪接调控状态的启示。

IF 9.9 1区生物学

Molecular Systems Biology Pub Date : 2024-04-01 Epub Date: 2024-03-04 DOI: 10.1038/s44320-024-00020-1

Ludovica Ciampi, Luis Serrano, Manuel Irimia

{"title":"Unique transcriptomes of sensory and non-sensory neurons: insights from Splicing Regulatory States.","authors":"Ludovica Ciampi, Luis Serrano, Manuel Irimia","doi":"10.1038/s44320-024-00020-1","DOIUrl":"10.1038/s44320-024-00020-1","url":null,"abstract":"Alternative Splicing (AS) programs serve as instructive signals of cell type specificity, particularly within the brain, which comprises dozens of molecularly and functionally distinct cell types. Among them, retinal photoreceptors stand out due to their unique transcriptome, making them a particularly well-suited system for studying how AS shapes cell type-specific molecular functions. Here, we use the Splicing Regulatory State (SRS) as a novel framework to discuss the splicing factors governing the unique AS pattern of photoreceptors, and how this pattern may aid in the specification of their highly specialized sensory cilia. In addition, we discuss how other sensory cells with ciliated structures, for which data is much scarcer, also rely on specific SRSs to implement a proteome specialized in the detection of sensory stimuli. By reviewing the general rules of cell type- and tissue-specific AS programs, firstly in the brain and subsequently in specialized sensory neurons, we propose a novel paradigm on how SRSs are established and how they can diversify. Finally, we illustrate how SRSs shape the outcome of mutations in splicing factors to produce cell type-specific phenotypes that can lead to various human diseases.","PeriodicalId":18906,"journal":{"name":"Molecular Systems Biology","volume":" ","pages":"296-310"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10987577/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140028437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Network integration of thermal proteome profiling with multi-omics data decodes PARP inhibition. 热蛋白质组分析与多组学数据的网络整合解码了 PARP 抑制作用。

IF 9.9 1区生物学

Molecular Systems Biology Pub Date : 2024-04-01 Epub Date: 2024-03-07 DOI: 10.1038/s44320-024-00025-w

Mira L Burtscher, Stephan Gade, Martin Garrido-Rodriguez, Anna Rutkowska, Thilo Werner, H Christian Eberl, Massimo Petretich, Natascha Knopf, Katharina Zirngibl, Paola Grandi, Giovanna Bergamini, Marcus Bantscheff, Maria Fälth-Savitski, Julio Saez-Rodriguez

{"title":"Network integration of thermal proteome profiling with multi-omics data decodes PARP inhibition.","authors":"Mira L Burtscher, Stephan Gade, Martin Garrido-Rodriguez, Anna Rutkowska, Thilo Werner, H Christian Eberl, Massimo Petretich, Natascha Knopf, Katharina Zirngibl, Paola Grandi, Giovanna Bergamini, Marcus Bantscheff, Maria Fälth-Savitski, Julio Saez-Rodriguez","doi":"10.1038/s44320-024-00025-w","DOIUrl":"10.1038/s44320-024-00025-w","url":null,"abstract":"Complex disease phenotypes often span multiple molecular processes. Functional characterization of these processes can shed light on disease mechanisms and drug effects. Thermal Proteome Profiling (TPP) is a mass-spectrometry (MS) based technique assessing changes in thermal protein stability that can serve as proxies of functional protein changes. These unique insights of TPP can complement those obtained by other omics technologies. Here, we show how TPP can be integrated with phosphoproteomics and transcriptomics in a network-based approach using COSMOS, a multi-omics integration framework, to provide an integrated view of transcription factors, kinases and proteins with altered thermal stability. This allowed us to recover consequences of Poly (ADP-ribose) polymerase (PARP) inhibition in ovarian cancer cells on cell cycle and DNA damage response as well as interferon and hippo signaling. We found that TPP offers a complementary perspective to other omics data modalities, and that its integration allowed us to obtain a more complete molecular overview of PARP inhibition. We anticipate that this strategy can be used to integrate functional proteomics with other omics to study molecular processes.","PeriodicalId":18906,"journal":{"name":"Molecular Systems Biology","volume":" ","pages":"458-474"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10987601/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140059959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hats off to 20S proteasome substrate discovery. 向 20S 蛋白酶体底物的发现致敬。

IF 8.5 1区生物学

Molecular Systems Biology Pub Date : 2024-04-01 Epub Date: 2024-03-12 DOI: 10.1038/s44320-024-00028-7

Taylor R Church, Anna Brennan, Seth S Margolis

引用次数: 0

Dissecting the spatiotemporal diversity of adult neural stem cells. 剖析成体神经干细胞的时空多样性

IF 9.9 1区生物学

Molecular Systems Biology Pub Date : 2024-04-01 Epub Date: 2024-02-16 DOI: 10.1038/s44320-024-00022-z

Nina Mitic, Anika Neuschulz, Bastiaan Spanjaard, Julia Schneider, Nora Fresmann, Klara Tereza Novoselc, Taraneh Strunk, Lisa Münster, Pedro Olivares-Chauvet, Jovica Ninkovic, Jan Philipp Junker

{"title":"Dissecting the spatiotemporal diversity of adult neural stem cells.","authors":"Nina Mitic, Anika Neuschulz, Bastiaan Spanjaard, Julia Schneider, Nora Fresmann, Klara Tereza Novoselc, Taraneh Strunk, Lisa Münster, Pedro Olivares-Chauvet, Jovica Ninkovic, Jan Philipp Junker","doi":"10.1038/s44320-024-00022-z","DOIUrl":"10.1038/s44320-024-00022-z","url":null,"abstract":"Adult stem cells are important for tissue turnover and regeneration. However, in most adult systems it remains elusive how stem cells assume different functional states and support spatially patterned tissue architecture. Here, we dissected the diversity of neural stem cells in the adult zebrafish brain, an organ that is characterized by pronounced zonation and high regenerative capacity. We combined single-cell transcriptomics of dissected brain regions with massively parallel lineage tracing and in vivo RNA metabolic labeling to analyze the regulation of neural stem cells in space and time. We detected a large diversity of neural stem cells, with some subtypes being restricted to a single brain region, while others were found globally across the brain. Global stem cell states are linked to neurogenic differentiation, with different states being involved in proliferative and non-proliferative differentiation. Our work reveals principles of adult stem cell organization and establishes a resource for the functional manipulation of neural stem cell subtypes.","PeriodicalId":18906,"journal":{"name":"Molecular Systems Biology","volume":" ","pages":"321-337"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10987636/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139747040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AI-guided pipeline for protein-protein interaction drug discovery identifies a SARS-CoV-2 inhibitor. 人工智能引导的蛋白质-蛋白质相互作用药物发现管道确定了一种 SARS-CoV-2 抑制剂。

IF 8.5 1区生物学

Molecular Systems Biology Pub Date : 2024-04-01 Epub Date: 2024-03-11 DOI: 10.1038/s44320-024-00019-8

Philipp Trepte, Christopher Secker, Julien Olivet, Jeremy Blavier, Simona Kostova, Sibusiso B Maseko, Igor Minia, Eduardo Silva Ramos, Patricia Cassonnet, Sabrina Golusik, Martina Zenkner, Stephanie Beetz, Mara J Liebich, Nadine Scharek, Anja Schütz, Marcel Sperling, Michael Lisurek, Yang Wang, Kerstin Spirohn, Tong Hao, Michael A Calderwood, David E Hill, Markus Landthaler, Soon Gang Choi, Jean-Claude Twizere, Marc Vidal, Erich E Wanker

{"title":"AI-guided pipeline for protein-protein interaction drug discovery identifies a SARS-CoV-2 inhibitor.","authors":"Philipp Trepte, Christopher Secker, Julien Olivet, Jeremy Blavier, Simona Kostova, Sibusiso B Maseko, Igor Minia, Eduardo Silva Ramos, Patricia Cassonnet, Sabrina Golusik, Martina Zenkner, Stephanie Beetz, Mara J Liebich, Nadine Scharek, Anja Schütz, Marcel Sperling, Michael Lisurek, Yang Wang, Kerstin Spirohn, Tong Hao, Michael A Calderwood, David E Hill, Markus Landthaler, Soon Gang Choi, Jean-Claude Twizere, Marc Vidal, Erich E Wanker","doi":"10.1038/s44320-024-00019-8","DOIUrl":"10.1038/s44320-024-00019-8","url":null,"abstract":"Protein-protein interactions (PPIs) offer great opportunities to expand the druggable proteome and therapeutically tackle various diseases, but remain challenging targets for drug discovery. Here, we provide a comprehensive pipeline that combines experimental and computational tools to identify and validate PPI targets and perform early-stage drug discovery. We have developed a machine learning approach that prioritizes interactions by analyzing quantitative data from binary PPI assays or AlphaFold-Multimer predictions. Using the quantitative assay LuTHy together with our machine learning algorithm, we identified high-confidence interactions among SARS-CoV-2 proteins for which we predicted three-dimensional structures using AlphaFold-Multimer. We employed VirtualFlow to target the contact interface of the NSP10-NSP16 SARS-CoV-2 methyltransferase complex by ultra-large virtual drug screening. Thereby, we identified a compound that binds to NSP10 and inhibits its interaction with NSP16, while also disrupting the methyltransferase activity of the complex, and SARS-CoV-2 replication. Overall, this pipeline will help to prioritize PPI targets to accelerate the discovery of early-stage drug candidates targeting protein complexes and pathways.","PeriodicalId":18906,"journal":{"name":"Molecular Systems Biology","volume":" ","pages":"428-457"},"PeriodicalIF":8.5,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10987651/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140101971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estrogen receptor activation remodels TEAD1 gene expression to alleviate hepatic steatosis. 雌激素受体激活可重塑 TEAD1 基因表达，从而缓解肝脏脂肪变性。

IF 9.9 1区生物学

Molecular Systems Biology Pub Date : 2024-04-01 Epub Date: 2024-03-08 DOI: 10.1038/s44320-024-00024-x

Christian Sommerauer, Carlos J Gallardo-Dodd, Christina Savva, Linnea Hases, Madeleine Birgersson, Rajitha Indukuri, Joanne X Shen, Pablo Carravilla, Keyi Geng, Jonas Nørskov Søndergaard, Clàudia Ferrer-Aumatell, Grégoire Mercier, Erdinc Sezgin, Marion Korach-André, Carl Petersson, Hannes Hagström, Volker M Lauschke, Amena Archer, Cecilia Williams, Claudia Kutter

{"title":"Estrogen receptor activation remodels TEAD1 gene expression to alleviate hepatic steatosis.","authors":"Christian Sommerauer, Carlos J Gallardo-Dodd, Christina Savva, Linnea Hases, Madeleine Birgersson, Rajitha Indukuri, Joanne X Shen, Pablo Carravilla, Keyi Geng, Jonas Nørskov Søndergaard, Clàudia Ferrer-Aumatell, Grégoire Mercier, Erdinc Sezgin, Marion Korach-André, Carl Petersson, Hannes Hagström, Volker M Lauschke, Amena Archer, Cecilia Williams, Claudia Kutter","doi":"10.1038/s44320-024-00024-x","DOIUrl":"10.1038/s44320-024-00024-x","url":null,"abstract":"Sex-based differences in obesity-related hepatic malignancies suggest the protective roles of estrogen. Using a preclinical model, we dissected estrogen receptor (ER) isoform-driven molecular responses in high-fat diet (HFD)-induced liver diseases of male and female mice treated with or without an estrogen agonist by integrating liver multi-omics data. We found that selective ER activation recovers HFD-induced molecular and physiological liver phenotypes. HFD and systemic ER activation altered core liver pathways, beyond lipid metabolism, that are consistent between mice and primates. By including patient cohort data, we uncovered that ER-regulated enhancers govern central regulatory and metabolic genes with clinical significance in metabolic dysfunction-associated steatotic liver disease (MASLD) patients, including the transcription factor TEAD1. TEAD1 expression increased in MASLD patients, and its downregulation by short interfering RNA reduced intracellular lipid content. Subsequent TEAD small molecule inhibition improved steatosis in primary human hepatocyte spheroids by suppressing lipogenic pathways. Thus, TEAD1 emerged as a new therapeutic candidate whose inhibition ameliorates hepatic steatosis.","PeriodicalId":18906,"journal":{"name":"Molecular Systems Biology","volume":" ","pages":"374-402"},"PeriodicalIF":9.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10987545/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140065564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Basal MET phosphorylation is an indicator of hepatocyte dysregulation in liver disease. 基础 MET 磷酸化是肝病中肝细胞失调的一个指标。

IF 9.9 1区生物学

Molecular Systems Biology Pub Date : 2024-03-01 Epub Date: 2024-01-12 DOI: 10.1038/s44320-023-00007-4

Sebastian Burbano de Lara, Svenja Kemmer, Ina Biermayer, Svenja Feiler, Artyom Vlasov, Lorenza A D'Alessandro, Barbara Helm, Christina Mölders, Yannik Dieter, Ahmed Ghallab, Jan G Hengstler, Christiane Körner, Madlen Matz-Soja, Christina Götz, Georg Damm, Katrin Hoffmann, Daniel Seehofer, Thomas Berg, Marcel Schilling, Jens Timmer, Ursula Klingmüller

{"title":"Basal MET phosphorylation is an indicator of hepatocyte dysregulation in liver disease.","authors":"Sebastian Burbano de Lara, Svenja Kemmer, Ina Biermayer, Svenja Feiler, Artyom Vlasov, Lorenza A D'Alessandro, Barbara Helm, Christina Mölders, Yannik Dieter, Ahmed Ghallab, Jan G Hengstler, Christiane Körner, Madlen Matz-Soja, Christina Götz, Georg Damm, Katrin Hoffmann, Daniel Seehofer, Thomas Berg, Marcel Schilling, Jens Timmer, Ursula Klingmüller","doi":"10.1038/s44320-023-00007-4","DOIUrl":"10.1038/s44320-023-00007-4","url":null,"abstract":"Chronic liver diseases are worldwide on the rise. Due to the rapidly increasing incidence, in particular in Western countries, metabolic dysfunction-associated steatotic liver disease (MASLD) is gaining importance as the disease can develop into hepatocellular carcinoma. Lipid accumulation in hepatocytes has been identified as the characteristic structural change in MASLD development, but molecular mechanisms responsible for disease progression remained unresolved. Here, we uncover in primary hepatocytes from a preclinical model fed with a Western diet (WD) an increased basal MET phosphorylation and a strong downregulation of the PI3K-AKT pathway. Dynamic pathway modeling of hepatocyte growth factor (HGF) signal transduction combined with global proteomics identifies that an elevated basal MET phosphorylation rate is the main driver of altered signaling leading to increased proliferation of WD-hepatocytes. Model-adaptation to patient-derived hepatocytes reveal patient-specific variability in basal MET phosphorylation, which correlates with patient outcome after liver surgery. Thus, dysregulated basal MET phosphorylation could be an indicator for the health status of the liver and thereby inform on the risk of a patient to suffer from liver failure after surgery.","PeriodicalId":18906,"journal":{"name":"Molecular Systems Biology","volume":" ","pages":"187-216"},"PeriodicalIF":9.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10912216/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139432683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A ubiquitous GC content signature underlies multimodal mRNA regulation by DDX3X. 无处不在的 GC 含量特征是 DDX3X 多模式 mRNA 调控的基础。

IF 8.5 1区生物学

Molecular Systems Biology Pub Date : 2024-03-01 Epub Date: 2024-01-25 DOI: 10.1038/s44320-024-00013-0

Ziad Jowhar, Albert Xu, Srivats Venkataramanan, Francesco Dossena, Mariah L Hoye, Debra L Silver, Stephen N Floor, Lorenzo Calviello

{"title":"A ubiquitous GC content signature underlies multimodal mRNA regulation by DDX3X.","authors":"Ziad Jowhar, Albert Xu, Srivats Venkataramanan, Francesco Dossena, Mariah L Hoye, Debra L Silver, Stephen N Floor, Lorenzo Calviello","doi":"10.1038/s44320-024-00013-0","DOIUrl":"10.1038/s44320-024-00013-0","url":null,"abstract":"The road from transcription to protein synthesis is paved with many obstacles, allowing for several modes of post-transcriptional regulation of gene expression. A fundamental player in mRNA biology is DDX3X, an RNA binding protein that canonically regulates mRNA translation. By monitoring dynamics of mRNA abundance and translation following DDX3X depletion, we observe stabilization of translationally suppressed mRNAs. We use interpretable statistical learning models to uncover GC content in the coding sequence as the major feature underlying RNA stabilization. This result corroborates GC content-related mRNA regulation detectable in other studies, including hundreds of ENCODE datasets and recent work focusing on mRNA dynamics in the cell cycle. We provide further evidence for mRNA stabilization by detailed analysis of RNA-seq profiles in hundreds of samples, including a Ddx3x conditional knockout mouse model exhibiting cell cycle and neurogenesis defects. Our study identifies a ubiquitous feature underlying mRNA regulation and highlights the importance of quantifying multiple steps of the gene expression cascade, where RNA abundance and protein production are often uncoupled.","PeriodicalId":18906,"journal":{"name":"Molecular Systems Biology","volume":" ","pages":"276-290"},"PeriodicalIF":8.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10912769/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139564024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Canalizing cell fate by transcriptional repression. 通过转录抑制改变细胞命运

IF 9.9 1区生物学

Molecular Systems Biology Pub Date : 2024-03-01 Epub Date: 2024-02-01 DOI: 10.1038/s44320-024-00014-z

Bryce Lim, Katrin Domsch, Moritz Mall, Ingrid Lohmann

{"title":"Canalizing cell fate by transcriptional repression.","authors":"Bryce Lim, Katrin Domsch, Moritz Mall, Ingrid Lohmann","doi":"10.1038/s44320-024-00014-z","DOIUrl":"10.1038/s44320-024-00014-z","url":null,"abstract":"Precision in the establishment and maintenance of cellular identities is crucial for the development of multicellular organisms and requires tight regulation of gene expression. While extensive research has focused on understanding cell type-specific gene activation, the complex mechanisms underlying the transcriptional repression of alternative fates are not fully understood. Here, we provide an overview of the repressive mechanisms involved in cell fate regulation. We discuss the molecular machinery responsible for suppressing alternative fates and highlight the crucial role of sequence-specific transcription factors (TFs) in this process. Depletion of these TFs can result in unwanted gene expression and increased cellular plasticity. We suggest that these TFs recruit cell type-specific repressive complexes to their cis-regulatory elements, enabling them to modulate chromatin accessibility in a context-dependent manner. This modulation effectively suppresses master regulators of alternative fate programs and their downstream targets. The modularity and dynamic behavior of these repressive complexes enables a limited number of repressors to canalize and maintain major and minor cell fate decisions at different stages of development.","PeriodicalId":18906,"journal":{"name":"Molecular Systems Biology","volume":" ","pages":"144-161"},"PeriodicalIF":9.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10912439/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139672247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine learning inference of continuous single-cell state transitions during myoblast differentiation and fusion. 肌母细胞分化和融合过程中连续单细胞状态转换的机器学习推断。

IF 9.9 1区生物学

Molecular Systems Biology Pub Date : 2024-03-01 Epub Date: 2024-01-18 DOI: 10.1038/s44320-024-00010-3

Amit Shakarchy, Giulia Zarfati, Adi Hazak, Reut Mealem, Karina Huk, Tamar Ziv, Ori Avinoam, Assaf Zaritsky

{"title":"Machine learning inference of continuous single-cell state transitions during myoblast differentiation and fusion.","authors":"Amit Shakarchy, Giulia Zarfati, Adi Hazak, Reut Mealem, Karina Huk, Tamar Ziv, Ori Avinoam, Assaf Zaritsky","doi":"10.1038/s44320-024-00010-3","DOIUrl":"10.1038/s44320-024-00010-3","url":null,"abstract":"Cells modify their internal organization during continuous state transitions, supporting functions from cell division to differentiation. However, tools to measure dynamic physiological states of individual transitioning cells are lacking. We combined live-cell imaging and machine learning to monitor ERK1/2-inhibited primary murine skeletal muscle precursor cells, that transition rapidly and robustly from proliferating myoblasts to post-mitotic myocytes and then fuse, forming multinucleated myotubes. Our models, trained using motility or actin intensity features from single-cell tracking data, effectively tracked real-time continuous differentiation, revealing that differentiation occurs 7.5-14.5 h post induction, followed by fusion ~3 h later. Co-inhibition of ERK1/2 and p38 led to differentiation without fusion. Our model inferred co-inhibition leads to terminal differentiation, indicating that p38 is specifically required for transitioning from terminal differentiation to fusion. Our model also predicted that co-inhibition leads to changes in actin dynamics. Mass spectrometry supported these in silico predictions and suggested novel fusion and maturation regulators downstream of differentiation. Collectively, this approach can be adapted to various biological processes to uncover novel links between dynamic single-cell states and their functional outcomes.","PeriodicalId":18906,"journal":{"name":"Molecular Systems Biology","volume":" ","pages":"217-241"},"PeriodicalIF":9.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10912675/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139491766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0