フィラミンAをターゲットにすることで,マクロファージの活動と動脈硬化が低下する
Sashidar Bandaru1, Chandu Ala1, Reza Salimi1
1Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine (S.B., C.A., R.S., S.D., J.V.d.E., E.L., L.M.A.), Sahlgrenska Academy, University of Gothenburg, Sweden.
Circulation
|April 25, 2019
まとめ
マクロファージのフィラミンA (FLNA) は細胞機能に不可欠であり,動脈硬化症を軽減します. FLNAの分裂を阻害することは,この心血管疾患の治療のための新しい治療戦略を提供するかもしれません.
科学分野:
- 心血管生物学
- セルラー・シグナル
- 免疫学
背景:
- フィラミンA (FLNA) は細胞運動を調節するアクチン結合タンパク質である.
- アテロゲネシス中のマクロファージにおけるFLNAの特定の役割は,ほとんど未知のままです.
研究 の 目的:
- 動脈硬化症の発達におけるマクロファージ特異的なFLNAの役割を調査する.
- 動脈硬化症の治療においてFLNAを標的とした治療の可能性を調査する.
主な方法:
- 人間の動脈硬化プラークにおけるFLNA発現を分析した.
- FLNA欠乏したマクロファージを生成したマウス
- 骨髄移植とウイルスの遺伝子配送を用いてマウスモデルで動脈硬化症の進行を研究した.
- FLNAの分裂とマクロファージの機能に対するカルペプチンの効果を研究した.
主要な成果:
- マクロファージFLNA発現は,進行した動脈硬化性プラークで上昇する.
- マクロファージのFLNA欠乏は,増殖,移動,泡細胞形成,脂質吸収を減少させ,脂質排出を増加させた.
- マウスモデルでは,FLNA分裂の遺伝的不活性化または薬理学的抑制により,動脈硬化性プラークのサイズが著しく減少しました.
- FLNA分裂剤はSTAT3と相互作用し,その抑制はSTAT3のリン酸化とIL-6の分泌を減少させます.
結論:
- FLNAはマクロファージの機能とアテロゲネシスに重要な役割を果たします.
- FLNA,特にそのカルパイン依存の割れ目をターゲットにすることで,動脈硬化症に対する有望な治療法となる.
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