CREB-Family Transcription Factors and Vasopressin-Mediated Regulation of Aqp2 Gene Transcription.

IF 9.4 1区 医学 Q1 UROLOGY & NEPHROLOGY
Adrian Rafael Murillo-de-Ozores, Lihe Chen, Shuo-Ming Ou, Euijung Park, Shaza Khan, Viswanathan Raghuram, Chin-Rang Yang, Chung-Lin Chou, Mark A Knepper
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引用次数: 0
creb家族转录因子及抗利尿激素介导的Aqp2基因转录调控。
背景:水稳态是由肽激素精氨酸抗利尿素(AVP)调节的,它促进水在肾收集管的再吸收。Aqp2基因转录调控是AVP调控水分转运的关键机制,该机制的破坏会导致水分平衡失调。因此,了解控制Aqp2基因转录的调控过程是一个重要的目标。虽然CREB (CREB1)被认为是负责Aqp2转录的主要转录因子,但最近的证据挑战了这一观点,表明其他CREB样转录因子,包括ATF1和CREM,可能也起作用。方法:采用CRISPR/Cas9基因编辑系统,对永活小鼠收集管细胞系mpkCCD细胞中的Atf1、Creb1和Crem基因进行删除。然后将这些细胞系暴露于抗利尿激素类似物dDAVP中,以评估这些转录因子在调节Aqp2表达中的作用。免疫印迹法检测AQP2蛋白水平,RNA-seq法分析AQP2 mRNA丰度变化及其他转录组学变化。结果:所有三个转录因子(ATF1, CREB1和CREM)的缺失共同导致抗利尿激素诱导的AQP2蛋白上调显著减少,证实了它们在调节AQP2表达中的作用。RNA-seq数据显示Aqp2 mRNA水平反映了蛋白丰度的变化,支持这些转录因子影响Aqp2转录的观点。在三重敲除细胞中进行的拯救实验表明,表达这三种转录因子中的任何一种都能恢复对抗利尿激素的反应。额外的RNA-seq分析显示,当使用ATF1、CREB1或CREM进行抢救时,转录组学发生了相似的变化。结论:Aqp2的转录调节并不仅仅依赖于CREB,而是可以通过CREB家族的三种转录因子(ATF1, CREB1或CREM)中的任何一种发生。RNA-seq研究表明,这三种转录因子调节高度重叠的mRNA物种集。
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来源期刊
Journal of The American Society of Nephrology
Journal of The American Society of Nephrology 医学-泌尿学与肾脏学
CiteScore
22.40
自引率
2.90%
发文量
492
审稿时长
3-8 weeks
期刊介绍: The Journal of the American Society of Nephrology (JASN) stands as the preeminent kidney journal globally, offering an exceptional synthesis of cutting-edge basic research, clinical epidemiology, meta-analysis, and relevant editorial content. Representing a comprehensive resource, JASN encompasses clinical research, editorials distilling key findings, perspectives, and timely reviews. Editorials are skillfully crafted to elucidate the essential insights of the parent article, while JASN actively encourages the submission of Letters to the Editor discussing recently published articles. The reviews featured in JASN are consistently erudite and comprehensive, providing thorough coverage of respective fields. Since its inception in July 1990, JASN has been a monthly publication. JASN publishes original research reports and editorial content across a spectrum of basic and clinical science relevant to the broad discipline of nephrology. Topics covered include renal cell biology, developmental biology of the kidney, genetics of kidney disease, cell and transport physiology, hemodynamics and vascular regulation, mechanisms of blood pressure regulation, renal immunology, kidney pathology, pathophysiology of kidney diseases, nephrolithiasis, clinical nephrology (including dialysis and transplantation), and hypertension. Furthermore, articles addressing healthcare policy and care delivery issues relevant to nephrology are warmly welcomed.
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