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[拼接因子HNRNPH1调节Circ-MYOCD的逆拼接,以调节心脏缩的过程]

Rui Cai^1,2, Zhuo Huang^1,2, Wenxia He²

¹School of Basic Medicine, Ningxia Medical University, Yinchuan 750004, China.

Nan fang yi ke da xue xue bao = Journal of Southern Medical University

|March 31, 2025

概括

HNRNPH1蛋白控制Circ-MYOCD的背接,影响心肌缩的进展. 这项研究揭示了HNRNPH1作为心脏细胞功能和疾病的关键调节者.

科学领域:

分子生物学分子生物学
心血管研究研究心血管研究
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.

背景情况:

循环RNAs (CircRNAs) 越来越多地被认为是基因调节中的角色.
心肌缩是心力衰竭的重要危险因素.
CircRNAs在心肌缩中的特定机制和调节作用需要进一步阐明.

研究的目的:

为了研究Circ-MYOCD的生物发生.
为了识别与Circ-MYOCD相互作用的RNA结合蛋白 (RBPs).
确定Circ-MYOCD及其相互作用蛋白在心肌缩中的作用.

主要方法:

使用桑格测序和RNase R试验证实了Circ-MYOCD的循环性和稳定性.
亚细胞局部通过核细胞质分离确定.
与Circ-MYOCD相互作用的RNA结合蛋白被使用生物信息学和质谱拉下测试确定.
在H9C2细胞中评估了HNRNPH1和HNRNPL对Circ-MYOCD背接和心肌缩标志物 (ANP,BNP) 的影响.

主要成果:

证实Circ-MYOCD是一种稳定,细胞质局部化的圆形RNA.
鉴定出HNRNPH1和HNRNPL是与Circ-MYOCD结合的RBPs.
在HNRNPH1的淘汰中,Circ-MYOCD的背接增强了,而过度表达则抑制了它.
HNRNPH1调节了心肌缩标志物ANP和BNP的表达.
在血管新素II诱导的缩中,HNRNPH1倒置增加了Circ-MYOCD,减少了MYOCD,并减少了缩标志物.

结论:

HNRNPH1在调节Circ-MYOCD背接上起着至关重要的作用.
HNRNPH1影响心肌缩的进展.
Circ-MYOCD及其与HNRNPH1的相互作用代表了肌心缩的潜在治疗标.

关键词:

在 HNRNPH1 的情况下,HNRNPH1 背接拼接是一种背接拼接.心脏过度缩小的心脏过度缩小圆形的RNARNA是一个圆形的RNA.拼接因素拼接因素

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