Wntシグナル伝達と胚のパターンの調節は,細胞外サルファターゼによって行われます
G K Dhoot1, M K Gustafsson, X Ai
1Department of Basic Veterinary Sciences, The Royal Veterinary College, University of London, Royal College Street, London NW1 OTU, UK.
Science (New York, N.Y.)
|September 5, 2001
まとめ
QSulf1は新しい酵素で,細胞表面ヘパラン硫酸プロテオグリカン (HSPG) を改変することによって筋肉の成長を調節します. この変異は,細胞の微分化に不可欠なWnt信号伝達経路にとって極めて重要です.
科学分野:
- 発達生物学 発達生物学について
- 細胞シグナル伝達 細胞信号伝達
- バイオケミストリー バイオケミストリー
背景:
- 細胞表面ヘパラン硫酸プロテオグリカン (HSPG) は,発達シグナル伝達経路の重要なレギュレーターです.
- HSPGの硫化パターンは,細胞プロセスにおける機能的役割を決定する.
研究 の 目的:
- HSPG硫化調節に関与する鳥類の酵素であるQSulf1を特定し,特徴づけること.
- 筋肉の原始細胞の分化とWnt信号伝達におけるQSulf1の役割を調査する.
主な方法:
- 鳥類のQSulf1オーソログの識別.
- クワイルドの胚におけるQSulf1発現の分析.
- C2C12菌性原始細胞における機能的研究.
主要な成果:
- QSulf1の発現は,Sonic hedgehogによってミオゲンソミトの祖先に誘発される.
- QSulf1は,筋肉の特異性の重要な調節体であるMyoDの活性化に必須です.
- QSulf1は,細胞表面のHSPGの触媒的脱硫によるWnt信号伝達を調節する.
結論:
- QSulf1は,HSPG硫化を変化させることでWnt信号伝達を調節する重要な酵素です.
- QSulf1は,細胞の分化に不可欠な信号伝達経路を調節することによって,筋肉の発達に重要な役割を果たします.
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