Cfp1通过修改结构性,代谢性和收缩性相关基因的希斯H3K4me3来控制心肌细胞成熟
Changzhu Li1, Yang Zhang1, Jingling Shen2
1Department of Pharmacology (State Key Laboratory of Frigid Zone Cardiovascular Disease, Key Laboratory of Cardiovascular Research, Ministry of Education), College of Pharmacy, Harbin Medical University, Harbin, Heilongjiang, 150086, P. R. China.
CXXC指蛋白1 (Cfp1) 对于心肌细胞成熟至关重要. 其缺乏会损害心脏发育,导致心脏病,而其过度表达通过调节质子修饰来促进成熟.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 心血管生物学 心血管生物学
- 发展生物学 发展生物学
背景情况:
- 心肌细胞成熟对心脏功能至关重要,其破坏会导致严重的心脏疾病.
- CXXC指蛋白1 (Cfp1) 是一种表观遗传调节剂,在心脏发育中发挥着尚未探索的作用.
- 了解Cfp1的功能对于解决心脏病的发病性至关重要.
研究的目的:
- 研究Cfp1在心肌细胞成熟中的作用和潜在机制.
- 确定Cfp1缺乏和过度表达对心肌细胞发育的影响.
- 阐明Cfp1对心脏基因表达的表观遗传调节.
主要方法:
- 产生心肌细胞特异性Cfp1淘汰 (Cfp1-cKO) 和转基因 (Cfp1-TG) 鼠标模型.
- 对心肌细胞结构,新陈代谢,收缩性和细胞周期的分析.
- 利用人类诱导的多能干细胞衍生心肌细胞 (hiPSC-CMs) 进行过度表达研究.
- 评估了基因组H3 lysine 4三甲基化 (H3K4me3) 修改和基因表达模式.
主要成果:
- Cfp1-cKO小鼠在4周内表现出胚胎致死性,并严重抑制了心肌细胞成熟.
- Cfp1缺乏导致心肌细胞的结构,代谢,收缩和细胞周期异常.
- 过度表达Cfp1的Cfp1-TG小鼠和hiPSC-CMs显示了心肌细胞成熟的增强.
- Cfp1调节H3K4me3修饰,影响胎儿和成人心脏基因的表达.
结论:
- Cfp1是心肌细胞成熟的关键调节者,对正常的心脏发育至关重要.
- Cfp1的功能障碍与心脏病的发病有着密切的联系.
- Cfp1通过通过H3K4me3修饰对关键发育基因的表观遗传控制来调节心肌细胞成熟.
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