Zfp362通过限制Treg细胞功能而不是促进Th17细胞分化来增强小鼠结肠炎症
Susanne Herppich1, Lisa Hoenicke1, Fabian Kern2,3
1Department Experimental Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany.
指蛋白362 (Zfp362) 抑制调节性T细胞 (Treg) 功能,影响结肠炎症. 它的缺失增加了Treg细胞,减少了炎症的严重程度,而不是影响T辅助17 (Th17) 细胞的分化.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 粘膜免疫依赖于T辅助细胞17 (Th17) 和调节性T (Treg) 细胞.
- 在Th17细胞中的DNA甲基化确定了指蛋白362 (Zfp362) 作为去甲基化.
研究的目的:
- 研究Zfp362在Th17细胞生物学中的作用及其对粘膜免疫力的影响.
- 了解Zfp362在结肠炎症的背景下所起的作用.
主要方法:
- 产生和分析Zfp362淘汰赛 (Zfp362-/-) 的小鼠.
- 流细胞测量用于评估各种组织中的T细胞群 (Th17和Treg细胞).
- 使用Zfp362-/-和Zfp362+/+衍生T细胞的收养转移实验到Rag2-/-小鼠中.
主要成果:
- 在Zfp362-/-小鼠中,Zfp362缺乏并没有改变Th17细胞分化.
- 在Zfp362小鼠中观察到结肠和介质淋巴结Treg细胞 (Foxp3+,IL-10+,RORγt+) 的频率增加.
- 采用Zfp362-/- T细胞的转移导致接受者小鼠的体重减轻,与效应Treg细胞增加有关.
结论:
- Zfp362通过限制Treg细胞效应因子的功能,在促进结肠炎症方面发挥作用.
- 在炎症中Zfp362的功能是独立于直接促进Th17细胞分化.
- Zfp362作为Treg细胞介导的肠道免疫抑制的负调节剂.
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