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Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes
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ATPは,Lamina propria T(H) 17の細胞の分化を促進する.
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
まとめ
アデノシントリフォスファート (ATP) は,特定の腸内細胞を活性化し,Tヘルパー17 (T(H) (17) 細胞の分化を促進します. これは,腸内のT(H) 17細胞の存在と,免疫障害におけるそれらの役割を説明します.
科学分野:
- 免疫学 免疫学とは
- 微生物学 微生物学とは
- 胃腸内科 胃腸内科
背景:
- Tヘルパー17 (T(H) 17細胞は,宿主の防御と免疫障害において極めて重要です.
- T(H) 17細胞は,腸内膜に独特で構成的に存在しています.
研究 の 目的:
- アデノシン・トリフォスファート (ATP) が,腸内内膜のT(H) 17細胞の分化における役割を調査する.
- コメンサル細菌がT(H) 17細胞集団に影響を与えるメカニズムを解明する.
主な方法:
- 細菌フリーマウスと特定病原体フリーマウスのT(H) 17細胞数とATP濃度の比較.
- 細菌のないマウスにATPを投与し,T(H) 17細胞の分化に及ぼす影響を評価した.
- T(H) 17 誘発性分子発現のための,特定のラミナ・プロポリア細胞サブセット (CD70 ((高い) CD11c ((低い)) の分析.
- T細胞媒介性大腸炎モデルにおけるATPの影響の評価.
主要な成果:
- 細菌のないマウスは,SPFマウスと比較して,光線ATPが著しく低下し,Lamina propria T ((H)) 17細胞が少なくなります.
- 細菌のないマウスにATPを投与すると,Lamina propria T(H) 17の細胞数が著しく増加した.
- ラミナプロピア細胞の特定のサブセット (CD70 ((高い) CD11c ((低い)) は,T ((H)) 17促進分子を発現し,T ((H)) 17の微分化を誘導することによってATPに反応した.
- ATP投与はT細胞媒介性大腸炎を悪化させ,T (H) 17の分化が強化されたと相関する.
結論:
- 腸内細菌に由来するATPは,腸内ラミナプロパティのT(H) 17細胞の分化を促進する重要な要因である.
- このメカニズムは,腸内のT (H) 17細胞の特定の局所と豊富さを説明します.
- T(H) 17の分化におけるATPの役割は,免疫媒介性腸疾患の理解と治療に意味を持つ.
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