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ATP驱动了T(H) 17的细胞分化
Koji Atarashi1, Junichi Nishimura, Tatsuichiro Shima
1Laboratory of Immune Regulation, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan.
Nature
|August 22, 2008
概括
总体细菌衍生的腺三酸盐 (ATP) 激活特定的肠道细胞,促进T助手17 (T(H) 17细胞的分化. 这解释了肠道中T(H) 17细胞的存在以及它们在免疫系统疾病中的作用.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 胃肠病学 胃肠病学
背景情况:
- 辅助性T17 (T(H) 17细胞对于宿主防御和免疫疾病至关重要.
- T(H) 17 细胞在肠道内膜本身中独特而构成性地存在.
研究的目的:
- 为了研究腺三酸盐 (ATP) 在肠膜内T(H) 17细胞分化中的作用.
- 阐明共生细菌影响T(H) 17细胞种群的机制.
主要方法:
- 在没有细菌和没有特定病原体的小鼠中,T(H) 17细胞数量和ATP度的比较.
- 给无菌小鼠注射ATP,以评估其对T(H) 17细胞分化的影响.
- 分析特异性膜细胞子集 (CD70 ((高) CD11c ((低)) 对于T ((H) 17易发生分子表达.
- 评估ATP对T细胞介导性大肠炎模型的影响.
主要成果:
- 与SPF小鼠相比,没有细菌的小鼠具有显著较低的光ATP和较少的T(H) 17细胞.
- 给无菌小鼠服用ATP显著增加了T(H) 17细胞的细胞数量.
- 一个特定的板状细胞子集 (CD70 (高) CD11 (低)) 通过表达T (H) 17促进分子和诱导T (H) 17分化来响应ATP.
- 服用ATP会加剧T细胞媒介性结肠炎,与增强的T(H) 17分化相关.
结论:
- 来自大肠细菌的ATP是驱动肠膜自身T(H) 17细胞分化的一个关键因素.
- 这种机制解释了肠道中T(H) 17细胞的特定定位和丰富性.
- ATP在T(H) 17分化中的作用对理解和治疗免疫媒介肠道疾病有意义.
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