タンパク質分解活性の増加は,中部T腫瘍遺伝子を発現する内皮細胞の異常な形態遺伝的行動に起因する
R Montesano1, M S Pepper, U Möhle-Steinlein
1Department of Morphology, University Medical Center, Geneva, Switzerland.
Cell
|August 10, 1990
まとめ
ポリオーマウイルスの中部T (mT) 腫瘍遺伝子は血管の発達を妨害し,血管腫を引き起こします. 繊維分解活性を制御することは,正常な血管形成の鍵であり,血管新生を調節する可能性があります.
科学分野:
- 腫瘍学 腫瘍学
- 分子生物学は分子生物学である.
- 血管生物学 血管生物学
背景:
- ポリオーマウイルスの中部T (mT) 腫瘍遺伝子は,血管の異常な発達を促し,内皮腫瘍 (血管腫) に繋がります.
- mT誘発の血管異常の背後にある分子メカニズムを理解することは極めて重要です.
研究 の 目的:
- mT腫瘍遺伝子を発現する内皮細胞の in vitro 形態遺伝的特性を調査する.
- mT誘発の血管異常におけるプロテオリチス活性の役割を解明する.
主な方法:
- mT発現するエンドセリオマ (End) 細胞をフィブリンゲルで培養する.
- ウロキナーゼ型プラズミノゲン活性化剤とプラズミノゲン活性化剤阻害剤のレベルを測定することによって,フィブリノリート活性性を評価する.
- 末端細胞をセリンプロテアゼ阻害剤で治療する.
主要な成果:
- 末端細胞はフィブリンゲルで血管腫のようなシスタ構造を形成した.
- 末端細胞は,ウロキナーゼ型プラズミノゲン活性化剤の増加とプラズミノゲン活性化剤阻害剤の減少により,高い線維分解活性性を示した.
- セリンプロテアゼ阻害剤は,末端細胞の行動を正常化し,毛細血管のような管の形成を促進しました.
結論:
- 厳密に制御されたタンパク質分解活動は,正常な血管形態変異に不可欠です.
- 生理学的プロテアゼ阻害剤は,血管新生において重要な規制的役割を果たします.
- 調節不良のフィブリノリシスは,腫瘍遺伝子が誘発した血管腫瘍に寄与する.
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