遺伝子エッセンシャルティプロフィーリングは,遺伝子ネットワークと,腫瘍性RASとの合成的致命的相互作用を明らかにする
Tim Wang1, Haiyan Yu2, Nicholas W Hughes3
1Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA; David H. Koch Institute for Integrative Cancer Research at MIT, Cambridge, MA 02139, USA; Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Cell
|February 7, 2017
まとめ
この研究では,急性骨髄性白血病 (AML) 細胞におけるCRISPRスクリーンを用いて癌の遺伝的依存性をマッピングしています. 新しい遺伝子相互作用を明らかにし,Ras駆動がんの合成致死性パートナーを特定します.
科学分野:
- ゲノミクス
- 癌 生物学
- 分子遺伝学
背景:
- ヒトの癌は 重要な遺伝的異質性を表しています
- これらの遺伝的依存性を理解することは,新しい治療目標の特定に不可欠です.
- 急性骨髄性白血病 (AML) は 遺伝的に複雑です
研究 の 目的:
- ヒトの急性骨髄性白血病 (AML) 細胞系における遺伝的依存性を分類する.
- 癌における機能的な遺伝子相互作用と遺伝子型に依存する負債を特定する.
- 特にRASが誘発する癌の 致命的な相互作用を解明するためです
主な方法:
- ゲノム全体のCRISPRベースのスクリーンは,遺伝子本質性データセットを生成するために使用されました.
- 14のヒトAML細胞系で遺伝子の本質性パターンを分析した.
- Ras依存型とRas独立型の細胞系を比較した.
主要な成果:
- 関連遺伝子の本質性パターンは,新しい遺伝子関係とタンパク質の機能を明らかにした.
- 致死性の合成Rasのパートナーが特定されました.
- Ras処理とMAPK経路が重要なことが判明し,PREX1はAML特異的なMAPKシグナル活性化剤として特定されました.
結論:
- 癌細胞の遺伝的多様性を利用することで 遺伝子ネットワークを定義する戦略が生まれます
- このアプローチは哺乳類の遺伝子ネットワークと 合成の致命的な相互作用を特定できます
- 発見はAMLの病原性と潜在的な治療戦略の洞察を提供します.
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