circGlis3通过与异质核核核糖核蛋白F结合并编码Glis3-348aa蛋白来促进β细胞功能障碍
Li Xiong1,2, Yingying Gong3, Huashan Liu1,2
1Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China.
iScience
|January 16, 2024
概括
循环RNAs (circRNAs) 调节β细胞功能,并与2型糖尿病 (T2DM) 有关. 这项研究表明,circGlis3通过影响蛋白相互作用和基因表达来损害β细胞功能,这表明它是T2DM治疗点.
科学领域:
- 内分泌学 在内分泌学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 循环RNAs (circRNAs) 是胰腺β细胞功能的关键调节者.
- 在2型糖尿病 (T2DM) 中,脂毒性诱导的β细胞损伤涉及circRNAs.
- circGlis3,来自Glis3基因的circRNA,在脂毒β细胞中被上调,但其功能尚不清楚.
研究的目的:
- 阐明circGlis3在β细胞功能中的功能作用和分子机制.
- 调查circGlis3在T2DM病变发生过程中的参与.
主要方法:
- 研究了circGlis3的生物发生,这种生物发生是由CUGBPElav-Like家族成员1 (CELF1) 的剪接因子促进的.
- 生成并分析了一种过度表达circGlis3.3的转基因小鼠模型.
- 研究了circGlis3与异质核核核糖核蛋白F (hnRNPF) 和GLIS3.3的分子相互作用.
主要成果:
- 在小鼠模型中,circGlis3的过度表达导致β细胞功能受损.
- circGlis3与hNRNPF结合,抑制其核转位并降低Sirt1水平.
- circGlis3编码一种与GLIS3相互作用的蛋白质,抑制其转录活性.
结论:
- circGlis3在β细胞功能障碍中起着至关重要的作用.
- circGlis3可能是T2DM的潜在治疗点.
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