平面的なHh信号は再生の極性を調節し,Hh経路の進化をシリアと結びつける
Jochen C Rink1, Kyle A Gurley, Sarah A Elliott
1Department of Neurobiology and Anatomy, Howard Hughes Medical Institute, University of Utah School of Medicine, 401 MREB, 20 North 1900 East, Salt Lake City, UT 84103, USA.
まとめ
ヘッジホッグ (Hh) 信号は,平面再生と軸形成に不可欠です. 驚くべきことに,鍵となるHh経路タンパク質は,平面体動物において,Hh信号そのものではなく,シリア機能に不可欠である.
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
- 再生医学は,再生医療である.
背景:
- ヘッジホッグ (Hh) 信号伝達経路は,メタゾアンの発達,ホメオスタシス,および疾患に不可欠です.
- モデルシステム (ドロソフィラ,魚,哺乳類) 全体のHh信号伝導の変異は,複雑な理解を示しています.
- プラナリアンは,保存された生物学的経路を調査するためのユニークなモデルを提供します.
研究 の 目的:
- プラナリアンのヘッジホッグ (Hh) 信号経路を特徴付けるために.
- 平面再生と軸の確立におけるHh信号の役割を理解する.
- プラナリアンにおける保存されたHh経路タンパク質の機能を調査する.
主な方法:
- 平面的な Schmidtea mediterranea.のHh経路の特徴付けについて
- 特定のHh経路成分 (Cos2/Kif27/Kif7,Fused,Iguana) を枯渇させるためにRNA干渉 (RNAi) を利用した.
- Hhシグナル伝達,Wnt発現,シリオゲネシスに対する評価効果.
主要な成果:
- Hhシグナリングは,平面再生中に前後軸を確立するために不可欠であり,Wnt表現を調節します.
- Cos2/Kif27/Kif7,Fused,またはIguanaのRNAi媒介による枯渇は,検出可能なHhシグナリングの欠陥を引き起こしませんでした.
- これらのタンパク質は,平面性シリオゲネシスに不可欠であることが判明しました.
結論:
- この研究は,動物界全体でHh信号の多様性の理解を広げています.
- Hhシグナル伝達とシリアの機能の間の先祖的なメカニズム的リンクを示唆しています.
- Hh経路の構成要素が平面体再生とシリア生物学におけるユニークな役割を強調しています.
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