{"title":"The biogenesis and regulation of animal microRNAs","authors":"Haedong Kim, Young-Yoon Lee, V. Narry Kim","doi":"10.1038/s41580-024-00805-0","DOIUrl":null,"url":null,"abstract":"<p>MicroRNAs (miRNAs) are small, yet profoundly influential, non-coding RNAs that base-pair with mRNAs to induce RNA silencing. Although the basic principles of miRNA biogenesis and function have been established, recent breakthroughs have yielded important new insights into the molecular mechanisms of miRNA biogenesis. In this Review, we discuss the metazoan miRNA biogenesis pathway step-by-step, focusing on the key biogenesis machinery, including the Drosha–DGCR8 complex (Microprocessor), exportin-5, Dicer and Argonaute. We also highlight newly identified <i>cis</i>-acting elements and their impact on miRNA maturation, informed by advanced high-throughput and structural studies, and discuss recently discovered mechanisms of clustered miRNA processing, target recognition and target-directed miRNA decay (TDMD). Lastly, we explore multiple regulatory layers of miRNA biogenesis, mediated by RNA–protein interactions, miRNA tailing (uridylation or adenylation) and RNA modifications.</p>","PeriodicalId":19051,"journal":{"name":"Nature Reviews Molecular Cell Biology","volume":"31 1","pages":""},"PeriodicalIF":81.3000,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Reviews Molecular Cell Biology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1038/s41580-024-00805-0","RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CELL BIOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
MicroRNAs (miRNAs) are small, yet profoundly influential, non-coding RNAs that base-pair with mRNAs to induce RNA silencing. Although the basic principles of miRNA biogenesis and function have been established, recent breakthroughs have yielded important new insights into the molecular mechanisms of miRNA biogenesis. In this Review, we discuss the metazoan miRNA biogenesis pathway step-by-step, focusing on the key biogenesis machinery, including the Drosha–DGCR8 complex (Microprocessor), exportin-5, Dicer and Argonaute. We also highlight newly identified cis-acting elements and their impact on miRNA maturation, informed by advanced high-throughput and structural studies, and discuss recently discovered mechanisms of clustered miRNA processing, target recognition and target-directed miRNA decay (TDMD). Lastly, we explore multiple regulatory layers of miRNA biogenesis, mediated by RNA–protein interactions, miRNA tailing (uridylation or adenylation) and RNA modifications.
期刊介绍：
Nature Reviews Molecular Cell Biology is a prestigious journal that aims to be the primary source of reviews and commentaries for the scientific communities it serves. The journal strives to publish articles that are authoritative, accessible, and enriched with easily understandable figures, tables, and other display items. The goal is to provide an unparalleled service to authors, referees, and readers, and the journal works diligently to maximize the usefulness and impact of each article. Nature Reviews Molecular Cell Biology publishes a variety of article types, including Reviews, Perspectives, Comments, and Research Highlights, all of which are relevant to molecular and cell biologists. The journal's broad scope ensures that the articles it publishes reach the widest possible audience.
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