{"title":"mtor相关的linc-PMB通过与HuR蛋白结合来稳定SIRT1 mRNA,从而促进线粒体生物发生。","authors":"Qian Chen, Huaying Zhang, Daokun Wang, Wenjing Liao, Yazhou Liu, Yurui Cai, Siyou Wang, Mengqian Yu","doi":"10.3724/abbs.2024236","DOIUrl":null,"url":null,"abstract":"<p><p>Mitochondrial dysfunction is implicated in numerous disorders, including type 2 diabetes, Alzheimer's disease and cancer. Long non-coding RNAs (lncRNAs) are emerging as pivotal regulators of cellular energy metabolism, yet their roles remain largely unclear. In this study, we identify an lncRNA named linc-PMB, which is associated with mTOR and promotes mitochondrial biogenesis, through microarray analysis. We demonstrate that the knockdown of <i>linc-PMB</i> results in significantly impaired mitochondrial respiration and biogenesis, along with altered expressions of related genes. Conversely, overexpression of linc-PMB markedly increases mitochondrial function. We further reveal that linc-PMB interacts with the RNA-binding protein HuR, promoting the stabilization of SIRT1 mRNA and a substantial increase in SIRT1 expression, which in turn activates the PGC-1α/mtTFA pathway and mitochondrial biogenesis. Collectively, our findings reveal a novel regulatory pathway in which linc-PMB, through its interaction with HuR, modulates the SIRT1/PGC-1α/mtTFA axis to maintain mitochondrial biogenesis and function.</p>","PeriodicalId":6978,"journal":{"name":"Acta biochimica et biophysica Sinica","volume":" ","pages":""},"PeriodicalIF":3.3000,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"mTOR-related linc-PMB promotes mitochondrial biogenesis via stabilizing SIRT1 mRNA through binding to the HuR protein.\",\"authors\":\"Qian Chen, Huaying Zhang, Daokun Wang, Wenjing Liao, Yazhou Liu, Yurui Cai, Siyou Wang, Mengqian Yu\",\"doi\":\"10.3724/abbs.2024236\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Mitochondrial dysfunction is implicated in numerous disorders, including type 2 diabetes, Alzheimer's disease and cancer. Long non-coding RNAs (lncRNAs) are emerging as pivotal regulators of cellular energy metabolism, yet their roles remain largely unclear. In this study, we identify an lncRNA named linc-PMB, which is associated with mTOR and promotes mitochondrial biogenesis, through microarray analysis. We demonstrate that the knockdown of <i>linc-PMB</i> results in significantly impaired mitochondrial respiration and biogenesis, along with altered expressions of related genes. Conversely, overexpression of linc-PMB markedly increases mitochondrial function. We further reveal that linc-PMB interacts with the RNA-binding protein HuR, promoting the stabilization of SIRT1 mRNA and a substantial increase in SIRT1 expression, which in turn activates the PGC-1α/mtTFA pathway and mitochondrial biogenesis. Collectively, our findings reveal a novel regulatory pathway in which linc-PMB, through its interaction with HuR, modulates the SIRT1/PGC-1α/mtTFA axis to maintain mitochondrial biogenesis and function.</p>\",\"PeriodicalId\":6978,\"journal\":{\"name\":\"Acta biochimica et biophysica Sinica\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2025-01-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta biochimica et biophysica Sinica\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.3724/abbs.2024236\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"BIOCHEMISTRY & MOLECULAR BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta biochimica et biophysica Sinica","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3724/abbs.2024236","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
mTOR-related linc-PMB promotes mitochondrial biogenesis via stabilizing SIRT1 mRNA through binding to the HuR protein.
Mitochondrial dysfunction is implicated in numerous disorders, including type 2 diabetes, Alzheimer's disease and cancer. Long non-coding RNAs (lncRNAs) are emerging as pivotal regulators of cellular energy metabolism, yet their roles remain largely unclear. In this study, we identify an lncRNA named linc-PMB, which is associated with mTOR and promotes mitochondrial biogenesis, through microarray analysis. We demonstrate that the knockdown of linc-PMB results in significantly impaired mitochondrial respiration and biogenesis, along with altered expressions of related genes. Conversely, overexpression of linc-PMB markedly increases mitochondrial function. We further reveal that linc-PMB interacts with the RNA-binding protein HuR, promoting the stabilization of SIRT1 mRNA and a substantial increase in SIRT1 expression, which in turn activates the PGC-1α/mtTFA pathway and mitochondrial biogenesis. Collectively, our findings reveal a novel regulatory pathway in which linc-PMB, through its interaction with HuR, modulates the SIRT1/PGC-1α/mtTFA axis to maintain mitochondrial biogenesis and function.
期刊介绍:
Acta Biochimica et Biophysica Sinica (ABBS) is an internationally peer-reviewed journal sponsored by the Shanghai Institute of Biochemistry and Cell Biology (CAS). ABBS aims to publish original research articles and review articles in diverse fields of biochemical research including Protein Science, Nucleic Acids, Molecular Biology, Cell Biology, Biophysics, Immunology, and Signal Transduction, etc.