单细胞多模式整合性分析突出了指导人类心脏发育的功能动态基因调节网络
Alyssa R Holman1, Shaina Tran2, Eugin Destici2
1Division of Cardiology, Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA; Biomedical Sciences Graduate Program, University of California, San Diego, La Jolla, CA 92093, USA.
研究人员在人类心脏发育过程中发现了不同的遗传程序,揭示了不同类型心肌细胞的关键调节者,并确定了心脏细胞生存和功能的关键途径.
科学领域:
- 心血管生物学 心血管生物学
- 发展生物学 发展生物学
- 基因组学就是基因组学.
背景情况:
- 了解心脏发育对于解决先天性心脏病和推进再生医学至关重要.
- 精确的遗传程序指导心肌细胞的形成,但不同的血统和它们的调节者仍然不完全理解.
研究的目的:
- 在人类心肌细胞发育过程中阐明动态,心脏特异性基因调节网络 (GRNs) 和转录调节器.
- 确定控制不同心肌细胞系和它们独特基因程序的关键因素.
主要方法:
- 整合了体外和体内人类单细胞多原子数据的整合.
- 高通量功能性基因组查以确定关键的转录因子.
- 从单细胞数据重建发育轨迹.
主要成果:
- 发现了由特定信号通路驱动的具有独特基因程序的分离心肌细胞系.
- 识别关键的转录因子功能调节这些不同的血统.
- 热冲击转录因子1 (HSF1) 介导的心脏代谢GRN的特征,对于心脏线粒体功能,代谢和生存至关重要.
结论:
- 多模式基因组研究系统地揭示了协调的GRNs控制着不同的人类心肌细胞群.
- 研究结果提供了对先天性心脏病机制和潜在的心脏再生疗法的见解.
- 通过HSF1介导的心脏代谢GRN对胎儿心肌细胞功能和存活至关重要.
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