William W Du, Muhammad Rafiq, Hui Yuan, Xiangmin Li, Sheng Wang, Jun Wu, Jinfeng Wei, Ren-Ke Li, Huiming Guo, Burton B Yang
{"title":"circRNA编码的新蛋白NAB1-356 circNAB1通过减少炎症和纤维化减轻心房颤动。","authors":"William W Du, Muhammad Rafiq, Hui Yuan, Xiangmin Li, Sheng Wang, Jun Wu, Jinfeng Wei, Ren-Ke Li, Huiming Guo, Burton B Yang","doi":"10.1002/advs.202411959","DOIUrl":null,"url":null,"abstract":"<p>Atrial fibrillation (AF) is a common arrhythmia with irregular atrial electrical activity. Circular RNAs (circRNAs) are key regulators in tissue homeostasis, yet their role in AF remains unclear. Here, we investigated the expression and function of circNAB1 in AF using high-throughput sequencing and functional assays in circNAB1 transgenic mice. We identified circNAB1 as a significantly downregulated circRNA in AF patient specimens. Silencing circNAB1 promoted collagen deposition and inflammation, whereas overexpression reduces atrial fibrosis and AF susceptibility in mice, consistent with results observed in human atrial tissues. Mechanistically, circNAB1 translates into a novel protein, NAB1-356, which is highly expressed in human cardiac hypertrophy. NAB1-356 interacts with EGR1 as NAB1 does, decreasing fibrosis and inflammation in the atrium. Furthermore, NAB1-356 also regulates transcription factor Runx1 and Gadd45b transcription, exerting regulatory effects on cytokine expression and fibrosis. Targeting EGR1, Gadd45b, and Runx1 by circNAB1 or siRNAs attenuate AF incidence and cardiac remodeling, suggesting potential therapeutic strategies for AF management. Delivery of circNAB1 improves AF conditions in LKB1 knockout mice, further highlighting its anti-arrhythmic potential. Our findings elucidate the mechanistic role of circNAB1 in AF pathogenesis and suggest its therapeutic implications for cardiac remodeling-associated disorders.</p>","PeriodicalId":117,"journal":{"name":"Advanced Science","volume":"12 20","pages":""},"PeriodicalIF":14.1000,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/advs.202411959","citationCount":"0","resultStr":"{\"title\":\"A Novel Protein NAB1-356 Encoded by circRNA circNAB1 Mitigates Atrial Fibrillation by Reducing Inflammation and Fibrosis\",\"authors\":\"William W Du, Muhammad Rafiq, Hui Yuan, Xiangmin Li, Sheng Wang, Jun Wu, Jinfeng Wei, Ren-Ke Li, Huiming Guo, Burton B Yang\",\"doi\":\"10.1002/advs.202411959\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Atrial fibrillation (AF) is a common arrhythmia with irregular atrial electrical activity. Circular RNAs (circRNAs) are key regulators in tissue homeostasis, yet their role in AF remains unclear. Here, we investigated the expression and function of circNAB1 in AF using high-throughput sequencing and functional assays in circNAB1 transgenic mice. We identified circNAB1 as a significantly downregulated circRNA in AF patient specimens. Silencing circNAB1 promoted collagen deposition and inflammation, whereas overexpression reduces atrial fibrosis and AF susceptibility in mice, consistent with results observed in human atrial tissues. Mechanistically, circNAB1 translates into a novel protein, NAB1-356, which is highly expressed in human cardiac hypertrophy. NAB1-356 interacts with EGR1 as NAB1 does, decreasing fibrosis and inflammation in the atrium. Furthermore, NAB1-356 also regulates transcription factor Runx1 and Gadd45b transcription, exerting regulatory effects on cytokine expression and fibrosis. Targeting EGR1, Gadd45b, and Runx1 by circNAB1 or siRNAs attenuate AF incidence and cardiac remodeling, suggesting potential therapeutic strategies for AF management. Delivery of circNAB1 improves AF conditions in LKB1 knockout mice, further highlighting its anti-arrhythmic potential. Our findings elucidate the mechanistic role of circNAB1 in AF pathogenesis and suggest its therapeutic implications for cardiac remodeling-associated disorders.</p>\",\"PeriodicalId\":117,\"journal\":{\"name\":\"Advanced Science\",\"volume\":\"12 20\",\"pages\":\"\"},\"PeriodicalIF\":14.1000,\"publicationDate\":\"2025-03-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/advs.202411959\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://advanced.onlinelibrary.wiley.com/doi/10.1002/advs.202411959\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Science","FirstCategoryId":"88","ListUrlMain":"https://advanced.onlinelibrary.wiley.com/doi/10.1002/advs.202411959","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
A Novel Protein NAB1-356 Encoded by circRNA circNAB1 Mitigates Atrial Fibrillation by Reducing Inflammation and Fibrosis
Atrial fibrillation (AF) is a common arrhythmia with irregular atrial electrical activity. Circular RNAs (circRNAs) are key regulators in tissue homeostasis, yet their role in AF remains unclear. Here, we investigated the expression and function of circNAB1 in AF using high-throughput sequencing and functional assays in circNAB1 transgenic mice. We identified circNAB1 as a significantly downregulated circRNA in AF patient specimens. Silencing circNAB1 promoted collagen deposition and inflammation, whereas overexpression reduces atrial fibrosis and AF susceptibility in mice, consistent with results observed in human atrial tissues. Mechanistically, circNAB1 translates into a novel protein, NAB1-356, which is highly expressed in human cardiac hypertrophy. NAB1-356 interacts with EGR1 as NAB1 does, decreasing fibrosis and inflammation in the atrium. Furthermore, NAB1-356 also regulates transcription factor Runx1 and Gadd45b transcription, exerting regulatory effects on cytokine expression and fibrosis. Targeting EGR1, Gadd45b, and Runx1 by circNAB1 or siRNAs attenuate AF incidence and cardiac remodeling, suggesting potential therapeutic strategies for AF management. Delivery of circNAB1 improves AF conditions in LKB1 knockout mice, further highlighting its anti-arrhythmic potential. Our findings elucidate the mechanistic role of circNAB1 in AF pathogenesis and suggest its therapeutic implications for cardiac remodeling-associated disorders.
期刊介绍:
Advanced Science is a prestigious open access journal that focuses on interdisciplinary research in materials science, physics, chemistry, medical and life sciences, and engineering. The journal aims to promote cutting-edge research by employing a rigorous and impartial review process. It is committed to presenting research articles with the highest quality production standards, ensuring maximum accessibility of top scientific findings. With its vibrant and innovative publication platform, Advanced Science seeks to revolutionize the dissemination and organization of scientific knowledge.