560の乳がん全ゲノム配列における体内変異の風景
Serena Nik-Zainal1,2, Helen Davies1, Johan Staaf3
1Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.
Nature
|May 3, 2016
まとめ
この研究では 560の乳がんを分析し 93のがん遺伝子に 駆動変異があり DNA修復の欠陥に関連した 新しい変異シグネチャを発見し 乳がんの遺伝学に関する理解を深めました
科学分野:
- ゲノミクス
- 癌 生物学
- 分子遺伝学
背景:
- 乳がんの遺伝的基礎を理解することは 標的治療の開発に不可欠です
- 誘発性変異と変異過程を特定することは 癌の発症を理解する上で鍵となるものです
研究 の 目的:
- 560の乳がんの全ゲノム配列を分析し,原発変異と変異過程を特定する.
- ゲノムの再編成とDNA修復の欠陥に関連した変異シグネチャーを特徴づける.
主な方法:
- 560件の乳がんの全ゲノム解析
- 誘導因子の変異のためのタンパク質コードと非コード領域の分析.
- 変異シグネチャー解析は ゲノム再編成に拡張された
主要な成果:
- 乳癌の誘導因子の突然変異を伴う タンパク質をコードする93の遺伝子を特定しました
- 12の塩基置換と6のゲノム再編成の 変異のサインを発見した
- BRCA1とBRCA2の機能障害に関連する3つの再配置シグネチャーが見つかりました.
結論:
- この研究は,乳がんにおける体内の変異を包括的に説明し,主要ながん遺伝子と変異過程を強調しています.
- この発見により 乳がんの遺伝子構造と 根本的な変異メカニズムが 解明されるようになりました
- DNA修復の欠陥に関連した特定の変異シグネチャーを特定し,治療戦略の潜在的洞察を提供しました.
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