障壁表面での非冗余のILC2応答の神経ペプチド調節
Amy M Tsou1,2, Hiroshi Yano1,3,4, Christopher N Parkhurst1,3,4
1Jill Roberts Institute for Research in Inflammatory Bowel Disease, Weill Cornell Medicine, New York, NY, USA.
Nature
|November 3, 2022
まとめ
ニューロメディンU (NMU) のような神経ペプチドは,第2群の先天性リンパ球 (ILC2) を調節し,非冗長性免疫反応と組織保護を促進します. これは免疫と治癒を統合する 保存されたメカニズムを強調しています
科学分野:
- 免疫学
- 神経科学
- 組織 ホメオスタシス
背景:
- 神経細胞と免疫細胞の協力は 抗菌免疫,炎症,組織ホメオスタシスに不可欠です
- ニューロンの信号は,粘膜の障壁にあるグループ2の先天性リンパ球 (ILC2) を調節する.
- ILC2は,ニューロメディンU (NMU) の受容体であるNMUR1を発現し,それはILC2の反応を強化する神経ペプチドである.
研究 の 目的:
- ILC2由来アンフィレグルリン (AREG) の免疫と組織保護における非冗長な機能を調査する.
- ILC2に特異的な遺伝子の削除のための遺伝的ツールを開発する.
主な方法:
- ILC2固有の遺伝子削除のためのNmur1プロモーターの下でiCreリコンビネーゼでマウスモデルを生成した.
- 抗寄生虫免疫と腸内組織修復におけるILC2由来AREGの役割を評価した.
- 炎症組織におけるNMU発現の測定とILC2sへの影響
主要な成果:
- ILC2に特異的なAREGの消去は,抗寄生虫免疫と組織保護における非冗長な役割を明らかにした.
- 炎症したマウスとヒトの腸内組織では,NMU濃度が上昇した.
- NMUはマウスとヒトの両方のILC2でAREGの生成を誘導した.
結論:
- ILC2由来のAREGは,宿主防御と組織修復において重要な非冗長な役割を果たします.
- ILC2sの神経ペプチド調節は,免疫と組織保護を結びつける進化的に保存されたメカニズムです.
- この研究は,ILC2の機能を研究するための貴重な遺伝的ツールを提供します.
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