河馬経路キナーゼ LATS1/2 ががん免疫を抑制する
Toshiro Moroishi1, Tomoko Hayashi2, Wei-Wei Pan3
1Department of Pharmacology and Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA.
Cell
|December 3, 2016
まとめ
ヒッポの経路,特に大きな腫瘍抑制剤1と2 (LATS1/2) キナーゼは,予期せぬ形で抗腫瘍免疫を抑制する. LATS1/ 2を阻害すると,免疫反応が強化され,腫瘍の収縮とがんワクチンの有効性が改善されます.
科学分野:
- 免疫学
- 分子生物学
- 腫瘍学
背景:
- 免疫性の低い腫瘍細胞は宿主の免疫監視を回避し,がんの進行に寄与する.
- 腫瘍の免疫原性を支配する複雑なメカニズムは,まだ完全に理解されていません.
- 抗腫瘍免疫を調節するヒッポ経路の役割は ほとんど未知のものです
研究 の 目的:
- 抗腫瘍免疫を調節するヒッポの経路の役割を調査する
- ヒッポの経路を標的にして 抗腫瘍免疫反応を 強化できるかどうか
- 癌の免疫療法における治療標的としてのLATS1/ 2の可能性を調査する.
主な方法:
- 3つのマウンの同胞性腫瘍モデル (B16,SCC7,4T1) を利用した.
- 腫瘍細胞における大型腫瘍抑制剤1および2 (LATS1/ 2) キナーゼの削除の影響を評価した.
- 適応性免疫反応と細胞外膀の分泌の役割を調査した.
- トール型受容体MYD88/TRIF経路の活性化を分析した.
主要な成果:
- すべてのモデルにおいて,腫瘍細胞におけるLATS1/ 2の喪失は,腫瘍の成長を有意に抑制した.
- LATS1/ 2の消去による腫瘍の回帰は,適応免疫反応に依存した.
- LATS1/ 2欠乏症は腫瘍ワクチンの有効性を高めました.
- LATS1/ 2ゼロの腫瘍細胞は,タイプIインターフェロン反応を誘発する細胞外膀を分泌した.
結論:
- LATS1/2キナーゼを通じたHippo経路は,抗腫瘍免疫を抑制する上で重要な役割を果たします.
- LATS1/ 2を標的とした治療は,腫瘍の免疫原性を高め,免疫媒介による腫瘍破壊を促進する.
- LATS1/ 2の抑制は,がんの免疫療法における有望な戦略です.
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