删除CTCF会改变人类iPSC的多能性和DNA甲基化特征
Deepika Puri1,2, Catharina Maaßen1,2, Monica Varona Baranda1,2
1Institute for Stem Cell Biology, RWTH Aachen University Medical School, Aachen, Germany.
Frontiers in cell and developmental biology
|December 15, 2023
概括
CCCTC-结合因子 (CTCF) 对于维持多能性和指导细胞分化至关重要. 切除CTCF损害了外皮发育,同时促进了内皮半皮系,揭示了它在细胞命运决定中的作用.
科学领域:
- 干细胞生物学 干细胞生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 染色素组织组织 染色素组织组织
背景情况:
- 多能干细胞分化成三个生殖层:内皮,中皮和外皮.
- 细胞命运决定的表观遗传机制仍然不完全理解.
- CCCTC-结合因子 (CTCF) 影响长距离的染色体组织.
研究的目的:
- 调查CTCF在人类诱导多能干细胞 (iPSCs) 定向细胞酸盐确定中的作用.
- 阐明CTCF改变对多能性维护和差异化潜力的影响.
主要方法:
- 在exon 3中产生具有CTCF缺失的人类iPSC线的生成.
- 染色体免疫沉以评估CTCF结合.
- 全球基因表达和DNA甲基化变化的分析.
- 对不同生殖层的差异化潜力的评估.
主要成果:
- 删除CTCF导致CTCF蛋白的表达减少,并在目标部位失去结合.
- 细胞表现出较慢的生长和改变的基因表达,包括多能性和神经外皮基因的下调.
- 观察到DNA甲基化变化,与基因表达有适度的相关性.
- 删除CTCF导致内皮半皮标记的上调和外皮分化受损.
结论:
- 在保持iPSC多能性方面,CTCF起着重要的作用.
- CTCF对于正确的外皮分化至关重要.
- 在细胞酸盐的确定中,CTCF起到关键的调节作用,特别影响了谱系的规范.
关键词:
克里斯普尔是什么意思?克里斯普尔是什么意思?在CTCF中,CTCF是指CTCF.通过DNA甲基化.在IPSC中,您可以使用IPSC.不同化的差异化差异化.多能性的多能性.干细胞是干细胞的组成部分.更多相关视频
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