基因组删除Bcl6对传统树突细胞子集产生差异性影响,并影响Tfh/Tfr/Th17细胞反应
Hongkui Xiao1, Isabel Ulmert1, Luisa Bach2
1Section for Experimental and Translational Immunology, Institute for Health Technology, Technical University of Denmark (DTU), 2800, Kongens, Lyngby, Denmark.
Nature communications
|April 30, 2024
概括
转录抑制剂Bcl6对于常规树突细胞 (cDC) 子集至关重要,影响免疫反应. 它的缺失影响cDC1和cDC2种群,改变T细胞免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 传统的树突细胞 (cDC) 对于启动免疫反应至关重要.
- 推动cDC异质性和功能专业化的因素尚不清楚.
- 了解cDC转录调节是解读免疫诱导的关键.
研究的目的:
- 调查转录抑制剂Bcl6在cDC子集中的作用.
- 确定Bcl6删除如何影响cDC表型,转录组和功能.
- 阐明Bcl6对免疫细胞异质性的贡献.
主要方法:
- 产生了特定于cDC的BCL6缺乏的小鼠.
- 使用流细胞计和转录学分析了cDC子集群体 (cDC1,cDC2).
- 评估了cDC1.1的抗原交叉呈现能力.
- 在免疫接种时评估T毛囊辅助和T毛囊调节细胞诱导.
- 研究了Th17对Citrobacter rodentium感染的免疫反应.
主要成果:
- 特定于cDC的Bcl6删除改变了cDC1和cDC2的表型和转录组,但保留了血统身份.
- Bcl6缺乏的cDC1在外围减少,但保留了抗原交叉呈现能力.
- 缺少Bcl6导致脏和肠道中诺奇2依赖cDC2的完全丧失.
- Bcl6 缺乏障碍的T毛囊辅助细胞诱导和T毛囊调节细胞群.
- 在对Citrobacter rodentium感染的反应中观察到降低了Th17免疫力.
结论:
- Bcl6是特定cDC子集的重要转录因子,特别是cDC2.
- Bcl6影响传统树突细胞的异质性和功能专业化.
- 这些发现提高了对控制cDC多样性和免疫调节的转录格局的理解.
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