関連する実験動画
単一ヌクレオチドのポリモルフィズムが冠動脈ステントを設置した後のレステノシスリスクと関連しており,p27kip1プロモーターの活性を調節する
Claudia M van Tiel1, Peter I Bonta, Saskia Z H Rittersma
1Department of Medical Biochemistry, University of Amsterdam, the Netherlands.
Circulation
|August 12, 2009
まとめ
p27遺伝子の遺伝的変異は,ステント内静止症のリスクを予測する可能性があります. p27(kip1)-838AA遺伝子型は,ステントを挿入した後のレステノスの減少と関連しており,滑らかな筋肉細胞の増殖制御における役割を示唆しています.
科学分野:
- 心血管遺伝学 心血管遺伝学
- 分子生物学は分子生物学である.
- 血管疾患の研究研究
背景:
- サイクリン依存キナーゼ阻害剤p27 ((kip1) は,滑らかな筋肉細胞と白血球の増殖を調節するために重要である.
- インステント・レステノシスは,冠動脈血管新生手術とステント置換の重大な合併症です.
- p27の遺伝的変異は,レステノシスリスクに影響を与える可能性があります.
研究 の 目的:
- 単一ヌクレオチドポリモルフィズム (SNPs) のp27(kip1) 遺伝子とインステント・レステノシスのリスクとの関連を調査する.
- 特定されたSNPがp27の遺伝子発現に与える機能的影響を評価する.
主な方法:
- 2つの独立したコホート (715人および2309人の患者) で3つのp27(kip1) SNP (-838C>A, -79C>T, +326G>T) のゲノタイプ化.
- エンドポイントとして,臨床的なインステントの静止症と標的血管再血管化の分析.
- -838C>A SNPがプロモーター活動に及ぼす機能的効果を評価するためのレポーター遺伝子解析.
主要な成果:
- p27(kip1) -838C>A SNP,特に -838AA遺伝子型は,インステント・レステノシスのリスクの低下と有意に関連していました (発見コホートではHR=0.28,複製コホートではHR=0.61).
- -79C>Tと+326G>TのSNPとインステント回復症との有意な関連は見つかりませんでした.
- -838Aアレルは, -838Cアレルと比較して,基礎p27の20倍以上の転写活性を示した.
結論:
- p27(kip1)-838AA遺伝子型は,インステント・レステノシスに対する保護因子です.
- -838Aアレルのプロモーター活性の強化は,滑らかな筋肉細胞増殖の減少に寄与し,レステノシスリスクの低下を説明する可能性がある.
- p27(kip1)-838C>A SNPは,冠動脈ステントを施す患者におけるリスク分層の遺伝子マーカーとして機能する可能性がある.
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