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Phosphopeptide Analysis of Rodent Epididymal Spermatozoa
Published on: December 30, 2014
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トランスクリプション後のWntシグナリングはエピディダムの精子成熟を制御する
Stefan Koch1, Sergio P Acebron1, Jessica Herbst1
1Division of Molecular Embryology, DKFZ-ZMBH Alliance, 69120 Heidelberg, Germany.
Cell
|November 23, 2015
まとめ
Wnt信号は,転写とは独立して精子の成熟を調節する. サイクリンY型1が欠けていた変異性マウスは,精子機能の障害により男性不妊症を示し,Wntを強調した.
科学分野:
- 生殖生物学と発達シグナリング
- 精子の成熟の分子メカニズム
- Wnt信号経路の 細胞の役割
背景:
- 標準的なWnt信号伝達経路は 発達と病気において極めて重要です
- β-カテニン媒介の転写を超えたその役割は十分に理解されていません.
- 転写独立のWnt信号の調査は,β-カテニンの広範囲な役割のために困難である.
研究 の 目的:
- Wntシグナル伝達経路の非転写的な役割を探求する.
- 精子の成熟に対するWnt信号の影響を調査する.
- 男性の生育におけるサイクリンY型1のようなWnt調節体の機能を特定する.
主な方法:
- 転写的に静かな精子におけるWnt信号の分析
- サイクリンY型1に対するマウス変異の生成と研究.
- GSK3 阻害による Wnt シグナル伝達後の効果の調査
主要な成果:
- 精子細胞は epididymal Wnt信号に反応する.
- サイクリンY型1が欠けているマウスは,不動で不整った精子を持つ男性不妊症を示します.
- 転写後のWnt信号は精子の恒常性,膜障壁形成,運動開始に影響する.
結論:
- Wntのシグナリングは,重要な転写後の精子の成熟プログラムをオーケストラします.
- トランスクリプション独立のWntシグナリングは男性の生殖能力において重要な役割を果たします.
- 結果は,体細胞における非転写的なWnt信号の再評価を示唆している.
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