Bingyu Chen , Qin Ran , Xin Chen , Zhilin Deng , Rong Zhou , Yu Zhang , Min Liu , Botong Li , Shuying Huang , Peijian Wang , Sizhou Huang
{"title":"Cxcr4a regulates heart progenitor development and cardiac rhythm in zebrafish","authors":"Bingyu Chen , Qin Ran , Xin Chen , Zhilin Deng , Rong Zhou , Yu Zhang , Min Liu , Botong Li , Shuying Huang , Peijian Wang , Sizhou Huang","doi":"10.1016/j.bbrep.2024.101782","DOIUrl":null,"url":null,"abstract":"<div><p><em>Cxcr4a</em> is involved in multiple organ development including coronary vasculature formation and heart left-right (LR) patterning, whether it is involved in heart progenitor determination and cardiac rhythm regulation is not addressed. Here we showed that in <em>cxcr4a</em> mutants, from 2 days post fertilization (dpf) to 4dpf the embryos transiently displayed pericardial edema and increased cardiac rhythm. While from 5dpf, the heart phenotype disappeared. Detailed analysis demonstrated that, at 36hpf and 48hpf, even though there was no distinct difference in the heart size between <em>cxcr4a</em> mutants and controls, the expression of <em>myl7</em> was decreased. Further data showed that, the heart progenitors were decreased at 18SS(Somite Stage). Mechanically, RNA-seq, RT-qPCR and <em>in situ</em> experiments showed that the retinoic acid (RA) signaling was upregulated, and the up-regulation of RA signaling may mediate the role of <em>cxcr4a</em> in regulating heart progenitor development. In addition, we also identified that low dose of RA treatment accelerated the cardiac rhythm, being similar to that in <em>cxcr4a</em> mutants. Decreasing RA signaling partially restored the rapid cardiac rhythm in <em>cxcr4a</em> mutants, implying the possibility that RA signaling partially mediates the role of <em>cxcr4a</em> in regulating cardiac rhythm. In conclusion, our study identified <em>cxcr4a</em> simultaneously regulates heart progenitor determination and cardiac rhythm.</p></div>","PeriodicalId":8771,"journal":{"name":"Biochemistry and Biophysics Reports","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405580824001468/pdfft?md5=47c49b1b9dfb8ca79c239401dbcee704&pid=1-s2.0-S2405580824001468-main.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biochemistry and Biophysics Reports","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2405580824001468","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Cxcr4a is involved in multiple organ development including coronary vasculature formation and heart left-right (LR) patterning, whether it is involved in heart progenitor determination and cardiac rhythm regulation is not addressed. Here we showed that in cxcr4a mutants, from 2 days post fertilization (dpf) to 4dpf the embryos transiently displayed pericardial edema and increased cardiac rhythm. While from 5dpf, the heart phenotype disappeared. Detailed analysis demonstrated that, at 36hpf and 48hpf, even though there was no distinct difference in the heart size between cxcr4a mutants and controls, the expression of myl7 was decreased. Further data showed that, the heart progenitors were decreased at 18SS(Somite Stage). Mechanically, RNA-seq, RT-qPCR and in situ experiments showed that the retinoic acid (RA) signaling was upregulated, and the up-regulation of RA signaling may mediate the role of cxcr4a in regulating heart progenitor development. In addition, we also identified that low dose of RA treatment accelerated the cardiac rhythm, being similar to that in cxcr4a mutants. Decreasing RA signaling partially restored the rapid cardiac rhythm in cxcr4a mutants, implying the possibility that RA signaling partially mediates the role of cxcr4a in regulating cardiac rhythm. In conclusion, our study identified cxcr4a simultaneously regulates heart progenitor determination and cardiac rhythm.
期刊介绍:
Open access, online only, peer-reviewed international journal in the Life Sciences, established in 2014 Biochemistry and Biophysics Reports (BB Reports) publishes original research in all aspects of Biochemistry, Biophysics and related areas like Molecular and Cell Biology. BB Reports welcomes solid though more preliminary, descriptive and small scale results if they have the potential to stimulate and/or contribute to future research, leading to new insights or hypothesis. Primary criteria for acceptance is that the work is original, scientifically and technically sound and provides valuable knowledge to life sciences research. We strongly believe all results deserve to be published and documented for the advancement of science. BB Reports specifically appreciates receiving reports on: Negative results, Replication studies, Reanalysis of previous datasets.