KITリガンドのポリモルフなp53応答要素は,がんリスクに影響を与え,自然選択を経ている
Jorge Zeron-Medina1, Xuting Wang, Emmanouela Repapi
1Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Old Road Campus Research Building, Oxford OX3 7DQ, UK.
Cell
|October 15, 2013
まとめ
p53結合部位の遺伝的変異は,がんのリスクに影響を与える可能性があります. KITLG遺伝子の特定の単核酸多形態 (SNP) は,がんの感受性を著しく増加させ,腫瘍抑制におけるp53の重要な役割を強調する.
科学分野:
- 遺伝学 遺伝学とは
- 癌生物学 癌生物学について
- 分子生物学は分子生物学である.
背景:
- 腫瘍抑制タンパク質p53は遺伝子転写を調節し,その結合部位を癌予防に不可欠にします.
- これらの機能的なp53結合部位における遺伝的変異 (ポリモルフィズム) は,がんに対する個人の感受性に影響を与える可能性があります.
研究 の 目的:
- ポリモルフなp53反応性要素を特定し,特徴づけるために.
- この多形性のがんリスクと遺伝子調節に対する影響を調査する.
主な方法:
- 癌の感受性位置,遺伝的多様性,p53結合情報を含む全ゲノムデータセットを使用しました.
- 機能的なp53結合部位内の単核酸多形態 (SNP) を特定しました.
- KITLG遺伝子のp53結合および転写調節に対するSNPの影響を評価した.
主要な成果:
- KITLG遺伝子を調節するp53結合部位に特定のSNPが見つかりました.
- このSNPは,全ゲノム関連研究によって特定された,癌のリスクの大幅な増加と関連しています.
- 進化的分析は,このSNPのポジティブな選択を明らかにし,過去の選択的利益を示唆したが,ネガティブな選択のために同様のSNPは稀である.
結論:
- p53結合部位内のポリモルフィズムは,がんのリスクに大きな影響を与える可能性があります.
- KITLGで特定されたSNPは,p53の調節とがんの感受性との間に強い関連性を示しています.
- いくつかのp53-結合部位ポリモルフィズムには利点があるかもしれませんが,ほとんどの場合,ネガティブな選択パターンが示すように,人間の健康に有害である可能性があります.
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