タフト細胞-ILC2回路は,腸の防御とホメオスタシスを統合する
Yoku Hayakawa1, Timothy C Wang2
1Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan.
Cell
|July 16, 2018
まとめ
ヘルミンス感染症は,タフト細胞と先天性リンパ球細胞 (ILC2) を含む2型免疫反応を誘発する. タフト細胞は寄生虫に由来するサクシネートを検知し 腸を改造する回路を活性化します
科学分野:
- 免疫学
- 胃腸内科
- 寄生虫学
背景:
- 腸の免疫システムは 病原体に反応するために 複雑な細胞回路に依存しています
- 2型免疫はヘルミントの感染と組織修復に対する防御に不可欠です.
- タフ細胞と2型先天性リンパ球細胞 (ILC2s) は,腸の2型免疫における重要な回路を形成する.
研究 の 目的:
- ヘルミントの感染に対する2型免疫反応を誘発するセンシングメカニズムを解明する.
- 感染中にタフ細胞の活性化に関与する特定の分子と経路を特定する.
主な方法:
- Gタンパク質結合受容体91 (GPR91) のタフト細胞機能における役割を調査した.
- ヘルミンチ感染のマウスモデルを使用し,免疫細胞集団とサイトカインの産生を分析した.
- タフト細胞のサクシネート検出によって開始されたシグナルカスケードを調べた.
主要な成果:
- タフト細胞は,ヘルミントトリチコモナスが産生するサクシナートを結合するGPR91を発現させる.
- タフト細胞によるサクシネート感知は,IL-25-ILC2-IL-13免疫軸を活性化します.
- この経路は 感染症に対する反応として 重要な腸の改造につながります
結論:
- 寄生虫由来代謝物であるサクシネートを検出する 重要なセンチネルとして機能します
- GPR91-スッキナート・タフト細胞軸は,ヘルミントに対する2型免疫応答の主要なイニシアターである.
- この発見は腸の免疫調節と 組織ホメオスタシスの新しいメカニズムを示しています
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