マスター・レギュラー・ランドスケープは,癌の転写的アイデンティティを制御する
Evan O Paull1, Alvaro Aytes2, Sunny J Jones1
1Department of Systems Biology, Columbia University Irving Medical Center, New York, NY 10032, USA.
Cell
|January 12, 2021
まとめ
この研究は,マスターレギュレータ (MRs) と呼ばれる重要なタンパク質を特定することによって,癌細胞の遺伝的変化が異なる腫瘍サブタイプを生成する方法を明らかにしています. これらのMRIは癌の説明に役立ちます.
科学分野:
- ゲノミクス
- 癌 生物学
- システム生物学
背景:
- 癌細胞のゲノム変異と転写的アイデンティティを結びつけるメカニズムはよく理解されていません.
- 特定の腫瘍のサブタイプと 根底にある遺伝的要因を特定することは 標的型治療に不可欠です
研究 の 目的:
- ゲノム変異と癌細胞の転写アイデンティティの関連を解明する.
- 新しい腫瘍のサブタイプとその調節メカニズムを特定する.
- がんにおける非腫瘍遺伝子の依存性を確立する.
主な方法:
- 癌ゲノムアトラス (TCGA) のデータに基づくネットワークベースのアプローチを用いた統合的ゲノム分析.
- マスター・レギュレータ (MR) プロテインとマスター・レギュレータ・ブロック・モジュール (MRB) の識別と組織.
- 身体的変異に基づく異常なMR活動の予測
- 遺伝子と薬学的検証試験
主要な成果:
- 20のTCGAコホートで112の転写的に異なる腫瘍サブタイプを定義する407のMRタンパク質を特定しました.
- 癌の特徴を制御し 患者のアウトカムを予測します
- > 50% の体内の変異が異常なMR活動を引き起こすと予測された.
- 細胞のアイデンティティとフェノタイプに対する変異とMR活動の影響を検証した.
結論:
- 変異と遺伝子発現のプロフィールの共同分析により,難解な腫瘍サブタイプが成功しました.
- 腫瘍の転写アイデンティティに遺伝的変化がどのように影響するかを理解するための枠組みを確立した.
- 癌における遺伝的変異の影響を媒介するメカニズムに関する検証可能な仮説を提供し,潜在的な非腫瘍遺伝的依存性を特定した.
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