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癌におけるRNA変異のゲノム基礎
, Claudia Calabrese1, Natalie R Davidson2,3,4,5,6
1European Molecular Biology Laboratory, European Bioinformatics Institute, Hinxton, UK.
Nature
|February 7, 2020
PubMed で要約を見る
まとめ
この研究は,1,188人のドナーのトランスクリプトームを用いて,癌に関連した遺伝子変異をカタログ化しています. 遺伝子発現変異の重要な要因として体内複製数の変異を明らかにします
科学分野:
- ゲノミクス
- 癌 生物学
- トランスクリプトミクス
背景:
- トランスクリプトの変異は癌ゲノムでは一般的ですが,特定のゲノム変化とリンクすることはデータ異質性のために困難です.
- 以前の研究では,トランスクリプトームと全ゲノム配列の両方の限られたコホートを分析し,がんにおけるRNA変異の包括的な分析を妨げました.
研究 の 目的:
- 癌に関連した遺伝子変異の 最も包括的なカタログを作成します
- RNAの変異と生殖系と体内DNAの変異を関連付け,その根底にある遺伝的メカニズムを特定する.
- 癌に関わる遺伝子やメカニズムを理解するためのリソースを提供する.
主な方法:
- 全ゲノムがん分析コンソーシアム (PCAWG) 内の1,188人のドナーの腫瘍トランスクリプトームの特徴.
- RNAの変異とDNAの変異を関連付けるために,マッチした全ゲノム配列データを利用した.
- ソマティック・コピー・ナンバーの変異,シングル・ヌクレオチドの変異,スプライシングの変異,遺伝子発現による遺伝子融合との関連を特定した.
主要な成果:
- 遺伝子発現の変動の主な要因として,体内複製数の変化が特定されました.
- 単核otide変異体と cis の遺伝子発現の間の649の関連性を発見し,その多くは非コーディング領域に関連している.
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