动态和鲜明的组织蛋白修饰促进了人类热囊细胞系的分化和分化
Bum-Kyu Lee1, Joudi Salamah2, Elisha Cheeran2
1Department of Biomedical Sciences, Cancer Research Center, University at Albany, State University of New York, Rensselaer, NY, 12144, USA. blee6@albany.edu.
Scientific reports
|February 24, 2024
概括
这项研究绘制了胎盘细胞发育过程中的组素修饰图. 动态表观遗传变化,特别是H3K4me3和H3K27ac,引导 trofhoblast干细胞分化成专门的胎盘细胞类型.
科学领域:
- 表观遗传学和发育生物学
- 生殖生物学 生殖生物学
- 细胞分化 细胞分化
背景情况:
- 胎盘对于胎儿发育至关重要.
- 基因组蛋白修饰调节基因表达和发育.
- 热囊细胞分化的表观遗传控制是很少理解的.
研究的目的:
- 为了绘制图表的基因组基因细胞 (TSC) 差异化过程中的基因组修饰.
- 阐明表观遗传调节在 trofhoblast 血统规范中的作用.
- 了解指导胎盘发育的动态基斯顿格局.
主要方法:
- 对H3K4me3,H3K27me3,H3K9me3和H3K27ac位置进行了全面的映射.
- 在TSC分化成同胞性细胞 (STs) 和异胞性细胞 (EVTs) 的过程中分析基因组修饰模式.
- 表观遗传标记与特定基因表达和增强剂活性的相关性.
主要成果:
- 动态的H3K4me3和H3K27ac模式促进了 trofhoblast 血统的分化.
- 广泛的H3K4me3域与热囊细胞系特异性基因相关.
- 在TSC中抑制关键基因与弱H3K4me3相关,而不是双价位域.
- 增强剂的无活化和激活动态先于ST的形成.
结论:
- 质子修饰在 trofhoblast 血统分化中起着动态的作用.
- 这项研究提供了胎盘发育过程中组织蛋白修饰的全球地图.
- 表观遗传景观对于建立专门的热原体细胞类型至关重要.
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