与HOPX相关的分子程序控制心肌细胞状态,支心脏结构和功能
Clayton E Friedman1, Seth W Cheetham2, Sumedha Negi1
1Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia.
Developmental cell
|December 13, 2023
概括
家庭主体蛋白HOPX调节心脏基因网络,这对心脏发育和功能至关重要. 细胞信号通路控制HOPX,影响疾病模型中的心肌细胞身份和再生.
科学领域:
- 心血管生物学 心血管生物学
- 干细胞生物学 干细胞生物学
- 基因组学就是基因组学.
背景情况:
- 心脏发育依赖于心肌细胞分化的精确基因组调节.
- 在这个过程中,非DNA结合蛋白 (如HOPX) 的作用尚未完全被理解.
研究的目的:
- 在心肌细胞分化和功能中研究家庭主体蛋白HOPX的基因组调节功能.
- 阐明心脏基因程序中HOPX的上游调节器和下游目标.
主要方法:
- 用人诱导的多能干细胞衍生的心肌细胞用于功能丧失研究.
- 进行了体外干扰研究,以分析细胞生长和增殖对HOPX的影响.
- 采用细胞,有机体和斑马鱼再生模型来评估HOPX在发育和疾病中的功能.
主要成果:
- 霍普克斯与心脏基因相互作用并调节心脏基因和增强器网络,这对心脏发育至关重要.
- 上游细胞生长和增殖信号调节HOPX转录,从而控制心脏基因程序.
- 霍普克斯调节的基因程序对于心肌细胞在发育过程和疾病背景中的功能至关重要.
结论:
- 机械地将细胞信号通路与HOPX转录联系起来,作为心肌细胞身份的关键调节者.
- 证明了HOPX在控制心脏发育,功能和再生所必需的基因程序中的重要作用.
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