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非古典的な免疫制御 皮膚免疫と組織修復に対する微生物群の影響
Jonathan L Linehan1, Oliver J Harrison1, Seong-Ji Han1
1Mucosal Immunology Section, Laboratory of Parasitic Diseases, NIAID, NIH, Bethesda, MD 20892, USA.
Cell
|January 24, 2018
まとめ
皮膚の微生物群は,非古典的なMHCクラスI分子を使用してT細胞を活性化することができます. この免疫反応は病原体の防御に役立ち 皮膚の傷の治癒を加速します
科学分野:
- 免疫学
- 微生物学
- 皮膚科
背景:
- 哺乳類のバリア表面には 多様な微生物群が存在します
- 免疫系が共生する微生物との相互作用は,ホメオスタシスにとって極めて重要です.
- 免疫系が微生物群を 検知する方法を理解することは不可欠です
研究 の 目的:
- 免疫系が 皮膚からの発症を 検知する方法を調べるためだ
- 微生物群に対するT細胞の反応の性質を定義する.
- 微生物群の免疫における非古典的なMHCクラスI分子の役割を調査する.
主な方法:
- T細胞の反応を誘導する
- T細胞の遺伝子発現シグネチャーの分析
- 免疫反応の特徴 (炎症,病原体からの保護,傷の修復) の評価
主要な成果:
- 皮膚の共生は,非古典的なMHCクラスIに限定されたT細胞反応を誘発する.
- これらの反応は病原体誘発免疫とは異なり,炎症とは結びつかない.
- コメンサル特異のT細胞は,エフェクタ,免疫調節,組織修復の遺伝子シグネチャーを表している.
- 病原体に対する非古典的なMHCI制限反応と 傷の快速閉塞
結論:
- 微生物群は 独特の適応性免疫反応を誘発し 抗菌防御と組織修復を結びつけます
- 非古典的なMHCクラスI分子は,共生微生物に対する恒常性免疫を促進する上で重要な役割を果たします.
- この古代の免疫経路は 宿主と微生物の相互作用と 免疫の調節に関する新しい見方を 提供しています
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