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Live-imaging of the Drosophila Pupal Eye
Published on: January 12, 2015
ドロソフィラVEGF経路による血液細胞移動の発達制御
Nam K Cho1, Linda Keyes, Eric Johnson
1Howard Hughes Medical Institute, Department of Biochemistry, Stanford University, Stanford, CA 94305, USA.
Cell
|April 17, 2002
まとめ
血管内皮成長因子 (VEGF) 信号伝達は,ドロソフィラの胚性血液細胞 (血球) 移住を導く. この経路は,アポプトティック・セル・ホーミングとは独立して機能し,血球の移動における祖先の役割を示唆している.
科学分野:
- 発達生物学 発達生物学について
- 細胞生物学 細胞生物学
- 遺伝学 遺伝学とは
背景:
- 胚の血液細胞の移動は,発達に不可欠です.
- これらの移動を誘導する特定のシグナル伝達経路の役割は完全に理解されていません.
- 血管内皮成長因子 (VEGF) は,血管形成における役割で知られている.
研究 の 目的:
- ドロソフィラの胚性血球移動におけるVEGF経路の役割を調査する.
- VEGFシグナル伝達が,発達中の血液細胞の動きを誘導することに関与しているかどうかを判断する.
主な方法:
- Drosophila melanogasterをモデル生物として利用しました.
- VEGF受容体とリガンドホモログの変異を生成する.
- 遺伝子分析と子宮外遺伝子発現実験を行いました.
- 顕微鏡を用いて血球の移動パターンを観察した.
主要な成果:
- VEGF受容体のホモログは,血球に発現する.
- 3つのVEGFホモログは,血球移動経路に沿って発現しています.
- VEGF受容体または3つのVEGFリガンドの障害により,血球の移動が停止した.
- Vegf27Cbの胎外発現は,血球の移動をリダイレクトした.
- VEGF経路は,アポプトシス細胞ホーミング経路とは独立して動作する.
結論:
- ドロソフィラVEGF経路は,胚の血球移動を誘導するために不可欠です.
- これは,VEGF経路の祖先の機能は,血液細胞の動きを導くことであったかもしれないことを示唆しています.
- この発見は,発達シグナル伝達経路の進化についての洞察を提供します.
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