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Updated: Aug 18, 2026

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Induction and Testing of Hypoxia in Cell Culture
Published on: August 12, 2011
ベーシック・ファイブロブラスト・成長因子は,血管内皮成長因子の発現を血管の滑らかな筋肉細胞で上調する. 低酸素と相乗効果のある相互作用
G T Stavri1, I C Zachary, P A Baskerville
1Department of Medicine, King's College School of Medicine and Dentistry, London, UK.
Circulation
|July 1, 1995
まとめ
基礎線維細胞成長因子 (bFGF) は,血管の滑らかな筋肉細胞における血管内皮成長因子 (VEGF) を上昇調節し,血管新生を促進します. 低酸素とbFGFはVEGFを相乗的に増加させ,血管新生反応を拡大する.
科学分野:
- 分子生物学は分子生物学である.
- 細胞生物学 細胞生物学
- 血管新生研究の研究
背景:
- 血管内皮成長因子 (VEGF) はヒポキシア誘導性血管新生因子の1つである.
- 基礎線維細胞成長因子 (bFGF) は,血管新生を直接促進することが知られている.
- bFGFの血管新生効果の間接的なメカニズムが調査されました.
研究 の 目的:
- bFGFが,血管の滑らかな筋肉細胞 (VSMC) のVEGF発現を調節するかどうかを調査する.
- VEGF発現に対する低酸素とbFGFの相乗効果を決定する.
主な方法:
- ウサギのVSMCは培養され,bFGFおよび/または低酸素 (2.5%O2) に暴露されました.
- VEGF mRNAレベルは,ノースン・ブロット・ハイブリダイゼーションを用いて分析された.
- c-mycプロトオンコゲンの発現は,特異性を確認するために評価されました.
主要な成果:
- bFGF治療は,VSMCにおける安定状態のVEGF mRNAレベルを時間および濃度に依存した方法で増加させた.
- 低酸素だけでは,VEGF mRNAのわずかな増加を引き起こしました.
- 併用した低酸素とbFGFは,VEGF mRNAのアップレギュレーションに相乗効果を示し,これはVEGFに特異的であり,c-myc.には観察されなかった.
結論:
- bFGFは,内皮細胞に直接,およびVSMCにおけるVEGFアップレギュレーションを通じて間接的に血管新生を促進します.
- 低酸素とbFGF (またはTGF-β1) の間の相乗効果の相互作用は,VSMCにおけるVEGF調節を通じて増幅された血管新生反応を強調する.
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