产生致病效应体TH17和调节性T细胞的相互发育途径
Estelle Bettelli1, Yijun Carrier, Wenda Gao
1Center for Neurologic Diseases, Beth Israel Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, Massachusetts 02115, USA.
Nature
|May 2, 2006
概括
互白素-6 (IL-6) 阻断了调节性T细胞 (Treg) 的发展,同时促进了致病性T助手17 (Th17) 细胞. 这种IL-6活动创造了一个平衡,有利于自身免疫组织损伤而不是其抑制.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 这是一种自身免疫力.
背景情况:
- 辅助T (Th) 细胞分化为Th1和Th2子集,在病原体清除中发挥不同的作用.
- Th17细胞诱导自身免疫组织损伤,而调节性T细胞 (Treg) 抑制自身免疫.
- 转化生长因子-β (TGF-β) 对于Treg细胞生成至关重要.
研究的目的:
- 为了研究INTERLEUKIN-6 (IL-6) 在T细胞分化中的作用.
- 阐明发生病原性Th17细胞和调控性T细胞 (Treg) 的因素.
主要方法:
- 利用在Foxp3位点中的记者与小鼠一起跟踪Treg细胞发育.
- 研究了IL-6和TGF-β对天真T细胞分化的影响.
- 评估了IL-23在Th17细胞分化中的作用.
主要成果:
- IL-6完全抑制了TGF-β诱导的Foxp3+Treg细胞的产生.
- IL-6和TGF-β一起诱导了致病性Th17细胞与天真T细胞的分化.
- IL-23并没有被确定为Th17细胞的分化因子.
结论:
- 在自身免疫反应中,病原性Th17细胞和Treg细胞之间存在关键平衡.
- 通过抑制Treg细胞和促进Th17细胞,IL-6在扭曲T细胞分化向自身免疫性方面发挥着关键作用.
- 了解这些差异化途径为控制自身免疫组织损伤提供了洞察力.
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