mTORおよびHIF-1α媒介の有酸素糖解は,訓練された免疫のための代謝的基礎として使用されます
Shih-Chin Cheng1, Jessica Quintin1, Robert A Cramer2
1Department of Internal Medicine, Radboud University Medical Center, 6525 GA Nijmegen, Netherlands.
まとめ
トレーニングされた免疫は,骨髄細胞における表遺伝的再プログラムの一形態であり,Akt-mTOR-HIF-1α経路経由でグルコース代謝を高めます. この代謝シフトは,糖分解を増加させ,感染に対する免疫を鍛える基礎を形成します.
科学分野:
- 免疫学 免疫学とは
- メタボリック経路は
- 細胞を再プログラムする.
背景:
- トレーニングされた免疫は,骨髄細胞の表遺伝的再プログラミングを伴うため,二次感染に対する非特異的な保護を提供します.
- トレーニングされた免疫の代謝的基礎は完全に理解されていません.
研究 の 目的:
- トレーニングされた免疫誘導の間にモノサイトの代謝変化を調査する.
- これらの代謝変化を調節する分子経路を特定する.
主な方法:
- カンディダ・アルビカン (Candida albicans β-glucan) で訓練されたヒトモノサイトにおけるヒストン改変プロファイルと全ゲノムトランスクリプトームの分析.
- Akt,mTOR,およびHIF-1α阻害剤を用いた抑制研究.
- 骨髄細胞特異的なHIF-1α欠陥を有するマウスにおける訓練された免疫の評価.
主要な成果:
- トレーニングを受けたモノサイトは,グルコース消費と乳酸生成が増加し,グルコース分解が強化されたことを示す.
- デクチン-1-Akt-mTOR-HIF-1α経路の活性化が,この代謝の再プログラミングを駆動する.
- Akt,mTOR,またはHIF-1αの抑制は,訓練された免疫誘導を廃止しました.
- メトホルミンは,真菌感染症に対する先天的な免疫反応を低下させた.
- HIF-1α欠乏したマウスは,細菌性セプシスに対する訓練された免疫を発達させなかった.
結論:
- Akt-mTOR-HIF-1α経路によって調節されるエアロビック糖解は,訓練された免疫の代謝的基礎である.
- この代謝経路をターゲットにすることで,感染症に対する新たな治療戦略を提供することができる.
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