BACH2调节TH17细胞中调节性和促炎性染色质状态的多样化
Pratiksha I Thakore1,2, Alexandra Schnell1,3,4, Linglin Huang3,5,6
1Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, USA.
Nature immunology
|July 15, 2024
概括
产生中白素-17 (IL-17) 的辅助T (TH17) 细胞具有不同的致病和非致病形式. 这项研究揭示了关键的调节通路和染色质差异,确定BACH2是TH17细胞功能和自身免疫的关键因素.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 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.
背景情况:
- 产生中白素-17 (IL-17) 的辅助T (TH17) 细胞是关键的免疫细胞,参与组织恒温和炎症.
- TH17细胞群是异质的,包括具有不同作用的非致病性 (npTH17) 和致病性 (pTH17) 子集.
研究的目的:
- 描述控制TH17细胞异质性的调节途径.
- 为了研究npTH17和pTH17细胞之间的染色体格局的差异.
- 确定调节TH17细胞致病性的关键转录因子.
主要方法:
- 染色体可访问性分析 (scATAC-seq) 和基因表达分析 (scRNA-seq) 在单细胞水平上进行了整合.
- 在npTH17,pTH17,调控性T细胞和1型辅助T (TH1) 细胞之间对染色质景观的比较分析.
- 在体外和体内验证已识别的调节途径和转录因子.
主要成果:
- 在npTH17和pTH17细胞之间观察到色素可访问性的显著差异,无论是体外还是体内.
- npTH17细胞与调节性T细胞共享色素特征,而pTH17细胞表现出 npTH17和TH1细胞的特征.
- BACH2被确定为一个关键的调节器,促进免疫调节性npTH17程序,并抑制促炎性TH1类程序.
结论:
- 这项研究阐明了TH17细胞异质性的表观遗传基础.
- BACH2在平衡TH17细胞功能和预防致病反应方面发挥着至关重要的作用.
- 针对TH17异质性的调节者,如BACH2,为诸如多发性硬化症等自身免疫性疾病提供了潜在的治疗策略.
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