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Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
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转化生长因子-β诱导了T(H) 17血统的发展
Paul R Mangan1, Laurie E Harrington, Darrell B O'Quinn
1Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama 35294-2170, USA.
Nature
|May 2, 2006
概括
转化生长因子-β (TGF-β) 通过上调IL-23R对T-辅助者-17 (T(H) 17细胞发育至关重要. 这种细胞因子信号通路是对细胞外细菌的适应性免疫的关键,并与自身免疫性疾病有关.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 具有IL-17生产特征的T-助手-17 (T(H) 17) 细胞,代表了与T(H) 1和T(H) 2细胞不同的血统.
- T(H) 17细胞对抗细菌等细胞外病原体的适应性免疫至关重要,并与自身免疫性疾病有关.
- 17发育与IL-23有关,IL-23是一种共享IL-12子单元 (IL-12p40) 的细胞因子,其受体与IL-12共享IL-12Rbeta1.1.
研究的目的:
- 确定参与T(H) 17细胞的结合和发育的关键细胞因子.
- 阐明转化生长因子β (TGF-β) 在T(H) 17细胞分化中的作用.
- 了解调节机制,规范的差异的T(H) 1,T(H) 2,和T(H) 17血统.
主要方法:
- 研究了TGF-β在天真T细胞分化中的作用.
- 分析了IL-23受体 (IL-23R) 在T(H) 17细胞发育中的表达.
- 研究了TGF-β,干扰素- (IFN-γ) 和IL-4对T(H) 17系承诺的影响.
- 评估了对IL-23在宿主防御中体内需求对Citrobacter rodentium.
主要成果:
- 转化生长因子-β (TGF-β) 被确定为T(H) 17细胞发育的关键细胞因子.
- TGF-β上调了IL-23受体 (IL-23R) 的表达,从而使其对IL-23.3有反应能力.
- 虽然IL-23在体外和体内的T(H) 17细胞发育中是不可或缺的,但它对于保护宿主免受Citrobacter rodentium感染至关重要.
- 干扰素- (IFN-γ) 和IL-4对抗TGF-β对天真T细胞的作用,影响血统分歧.
结论:
- TGF-β在启动T(H) 17细胞系承诺方面发挥着关键作用.
- TGF-β,IL-23,IFN-γ和IL-4之间的相互作用决定了T辅助细胞子集的分化途径.
- 了解T(H) 17细胞发育对于解决自身免疫性疾病和增强适应性免疫力至关重要.
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