比較ゲノミクスによるヒト疾患変異のシス抑制の特定
Daniel M Jordan1, Stephan G Frangakis2, Christelle Golzio2
1Division of Genetics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA.
Nature
|July 1, 2015
まとめ
ゲノムの文脈は,タンパク質の進化と病気に影響を与えます. 他の種における補償性アミノ酸の変化は,ヒトの疾患変異を救出し,変異の解釈を助けることができます.
科学分野:
- ゲノミクスゲノミクスとは
- 進化生物学の進化生物学について
- 分子生物学は分子生物学である.
背景:
- アミノ酸の保存パターンは,タンパク質の進化とヒトゲノミクスに情報を与えます.
- 遺伝子変異の病原性を解釈することは,患者のケアにとって極めて重要です.
研究 の 目的:
- 比較ゲノミクスを用いて,ヒトの病気を引き起こすミスセンスの変種を体系的に分析する.
- 病気におけるゲノム文脈と遺伝的相互作用の役割を調査する.
- アレルの病原性を予測するための計算ツールを開発する.
主な方法:
- ヒトの病気を引き起こすミスセンスの変異の比較ゲノミクス分析.
- 補償メカニズムを予測するための遺伝子相互作用モデルの開発.
- ヒトの疾患遺伝子における予想された補償残留物の機能的テスト.
- Ab initio遺伝子発見のためのアプローチの適用.
主要な成果:
- 病気を引き起こすアレルの有意な部分は,他の種に保存されていて,ゲノム的な文脈の重要性を示しています.
- 遺伝子相互作用モデルは,多くの保存されたアレルの対対の補償を予測した.
- ヒトの変異を救出する特定のシスアミノ酸残基を in vivo で特定した.
- 種間の保護性シス変異を持つBTG2における新たな病原体を発見した.
結論:
- シスゲノム的な文脈は,タンパク質の進化と病気の重要な要因である.
- フェノタイプに対するアレル効果は複雑で,遺伝子の相互作用によって影響を受けます.
- 開発されたコンピューティングツールは,アレル病原性を予測し,疾患メカニズムを理解するのに役立ちます.
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