メタボリック・フィンガープリントリンク 腫瘍性PIK3CAと強化アラキドン酸由来エコサノイド
Nikos Koundouros1, Evdoxia Karali2, Aurelien Tripp2
1Signalling and Cancer Metabolism Team, Division of Cancer Biology, The Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK; Division of Systems Medicine, Department of Metabolism Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK.
Cell
|June 20, 2020
まとめ
この研究は,がんを誘発するPIK3CA変異と,アラキドン酸代謝の変化を関連付けています. リン酸塩A2を阻害し,食事中の脂肪を制限することは,標的がん治療に有望である.
科学分野:
- 腫瘍学
- 分子生物学
- メタボリック・エンジニアリング
背景:
- 癌の発症には 代謝の変化が伴います
- 癌の分層化と治療における代謝追跡の役割は十分に研究されていない.
研究 の 目的:
- メタボリックフェノタイプと変異したPIK3CA遺伝子型との関連を調査する.
- PIK3CA誘発がんにおける代謝経路を標的とした治療の可能性を調査する.
主な方法:
- iKnifeを使って リアルタイムで 代謝現象を分析した
- PIK3CA変異を特定するために,代謝データと遺伝分析を組み合わせた.
- mTORC2-PKCζ-cPLA2信号軸の役割を調査した.
- cPLA2抑制と食事介入の有効性を評価した.
主要な成果:
- 変異したPIK3CAと アラキドン酸とイコサノイドの産生の増加との相関が確認された.
- 変異したPIK3CAによるmTORC2-PKCζ-cPLA2の活性化を含むシグナルネットワークを特定した.
- 脂肪酸のない食事と組み合わせたcPLA2抑制は,PIK3CAによる腫瘍発生性を減少させることが示された.
- 併用療法により免疫原性の回復が示された.
結論:
- メタボリックフェノタイプ化は 癌のリアルタイム診断と分層化に 新しいアプローチを提供します
- 変異したPIK3CAはアラキドン酸の代謝に重大な影響を及ぼし,標的の脆弱性を生み出します.
- cPLA2の結合抑制と食事中の脂肪の制限は,PIK3CA主導の癌の潜在的な治療戦略を表しています.
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