インタールイキン-17は,損傷した上皮の低酸素適応を制御する
Piotr Konieczny1, Yue Xing1, Ikjot Sidhu1,2
1Department of Pathology, New York University Langone Health, New York, NY 10016, USA.
まとめ
HIF1αは損傷した上皮に作用しません. 代わりに, γδ T 細胞からのインタールイキン-17A (IL-17A) は,HIF1αを活性化し,上皮修復に不可欠な糖分解を誘発する.
科学分野:
- 免疫学
- 細胞生物学
- 分子生物学
背景:
- 哺乳類の細胞は低酸素誘導転写因子 (HIF) を活性化して,低酸素状態で生存します.
- 損傷した上皮細胞におけるHIF1αの活性化には不十分である.
研究 の 目的:
- HIF1αの活性化におけるシグナル伝達経路と免疫細胞の関与を調査する.
- 低酸素ストレスに対する上皮の適応におけるIL-17A-HIF1α軸の役割を明らかにする.
主な方法:
- マルチモダル単細胞と空間トランスクリプトミクス分析
- 遺伝子操作と薬理学的抑制を含む機能的研究
- AKT,ERK1/2,mTORを含む信号経路の分析
主要な成果:
- レチノ酸関連孤児受容体 γt+ (RORγt+) γδ T細胞由来IL-17Aは,損傷した上皮におけるHIF1α活性化に必要かつ十分である.
- IL- 17AはAKTとERK1/ 2のシグナリングを通じてHIF1αを活性化し,mTORの活性化につながります.
- IL-17A-HIF1α軸は傷口前皮質の糖分解を促進し,これは修復に不可欠です.
- IL - 17RC,HIF1α,または糖分解の障害は上皮の治癒を阻害する.
結論:
- γδ T細胞によって生成されるIL-17Aは,上皮修復中のHIF1α活性化の主なイニシアターです.
- IL-17A-HIF1α経路は,炎症的,代謝的,移動的プロセスを効率的な上皮の治癒のために結合します.
- 免疫細胞から派生した信号は,組織修復中の低酸素ストレスに対する細胞の適応において重要な役割を果たします.
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