JAK/STATシグナル伝達は,イシュケミアと再注射の間に心機能不全と関連しています
E Mascareno1, M El-Shafei, N Maulik
1Center for Cardiovascular and Muscle Research, Department of Anatomy and Cell Biology, State University of New York Health Science Center Brooklyn, Brooklyn, NY, USA.
Circulation
|July 18, 2001
まとめ
ジャヌスキナーゼ/シグナルトランスデューサーおよびトランスクリプションアクティベーター (JAK/STAT) 経路の活性化が心不全に寄与する. この経路を阻害すると,損傷を軽減し,イシュケミア/再注血後の心臓機能を改善します.
科学分野:
- 心血管科学の研究について
- 分子生物学は分子生物学である.
- 病理生理学 病理生理学とは
背景:
- 心臓のレニン-アニオテンシンシステム (RAS) の活性化は,不全性損傷と関連しています.
- アンジオテンシンIIシグナリングは,JAK/STATを含む細胞内経路を活性化します.
研究 の 目的:
- JAK/STATシグナル伝達が心筋不全/再注射損傷における役割を調査する.
- JAK/STATの活性化が心臓損傷に寄与するかどうかを判断する.
主な方法:
- 成人ラットの心筋梗塞を研究し,イシュケミア/再輸血を受けた.
- STAT 5AとSTAT 6のコンポーネントの活性化を分析した.
- 利用されたAT(1) 阻害剤 (ロサルタン) とJAK2阻害剤 (ティルフォスティンAG490) です.
主要な成果:
- STAT 5AとSTAT 6は,血栓不血症/再輸血後の活性化でした.
- アクティベーションされたSTATは,アンジオテンシノゲン (ANG) 遺伝子とmRNAを上調した.
- 阻害剤はSTAT/ANGプロモーター結合を阻害し,心臓発作のサイズ,アポトーシスを減少させ,血液動力学を改善しました.
結論:
- JAK/STAT経路の活性化は,心筋不全症の病原性における重要な要因である.
- JAK/STATの活性化を妨害すると,心臓機能の回復が促進されます.
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