亲B细胞中的YY1淘汰会损害谱系的承诺,使异常的造血谱系可塑性成为可能
Sarmistha Banerjee1, Sulagna Sanyal1, Suchita Hodawadekar1
1Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Genes & development
|October 3, 2024
概括
转录因子YY1对于B细胞发育至关重要. 在亲B细胞中缺少它,使它们能够成为T细胞和其他血细胞类型,揭示出意想不到的血统可塑性.
科学领域:
- * 血液形成和免疫学
- * 分子和细胞生物学
背景情况:
- * B细胞发育是一个严格规范的过程,涉及不同的发育阶段.
- * 亲B细胞阶段对于对B细胞血统的承诺至关重要.
- *YY1 (阴阳1) 是一种类转录因子,在基因激活和抑制中具有已知的作用.
研究的目的:
- * 调查YY1在B细胞谱系承诺中的作用.
- * 探索YY1缺少的亲B细胞采用替代细胞命运的潜力.
- * 阐明YY1在血统承诺中的功能背后的分子机制.
主要方法:
- * 在亲B细胞中YY1淘汰.
- *使用OP9-DL4共同培养系统进行体外分化试验.
- * 在Rag1缺乏的小鼠体内移植.
- * 单细胞RNA测序 (scRNA-seq) 进行.
- *RNA测序 (RNA-seq),ChIP测序 (ChIP-seq) 和scATAC测序 (scATAC-seq) 进行.
主要成果:
- * 在亲B细胞阶段的YY1淘汰,取消了B细胞谱系的承诺.
- *YY1缺乏的亲B细胞在体外和体内分化为T系细胞.
- *scRNA-seq在YY1缺乏的亲B细胞中显示了广泛的血统可塑性,细胞采用了多个造血系的形状.
- *YY1调节了替代血统基因的染色质可访问性,促进了血统切换.
结论:
- * YY1对于建立和维持B细胞系承诺是不可或缺的.
- * 失去了YY1功能,使亲B细胞具有显著的可塑性,使其能够分化为不同的造血系.
- *YY1很可能通过控制染色质可访问性和基因表达程序来作为血统承诺的主调节者.
关键词:
B细胞的发育过程YY1 YY1 这是一个很大的问题.其他替代血统可以选择.造血系血统的可塑性 造血系的可塑性血统承诺 血统承诺这就是 scATAC-seqq.这就是scRNA-seqq.转录 转录 是一种转录.更多相关视频
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