膜組成のダイナミックリモデリングは,プライマリシリア切除を通して細胞サイクルを駆動します

Siew Cheng Phua¹, Shuhei Chiba², Masako Suzuki³

¹Department of Cell Biology and Center for Cell Dynamics, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.

Cell

|January 14, 2017

まとめ

主要なシリアの動態は,アクチンポリメリゼーションを制御する酵素であるInpp5eによって調節されます. シリアの断層と呼ばれるこのプロセスはシリアの解体につながり細胞分裂と癌の発生を結びつけます

科学分野:

細胞生物学
分子生物学
生物化学

背景:

静止状態の細胞における重要なシグナリングハブです
構造的なダイナミクスは厳格に規制されています
プライマリシリウム分解を制御するメカニズムは完全に理解されていません.

研究の目的:

プライマリシリウム構造と動態の調節におけるInpp5eの役割を調査する.
主要なシリウム分解のメカニズムを解明する.
主要なと細胞周期の進行との関係を調べる

主な方法:

細胞培養モデルと生細胞画像を用いた.
タンパク質の局所化と脂質の変化を分析するために生化学的測定法を使用した.
遺伝子操作と薬理学的阻害剤を用いてInpp5eの役割を調査した.

主要な成果:

Inpp5eが静止中の細胞のシリア構造のダイナミクスを制限することを示した.
成長誘導は,Inpp5eの移転と,ディスタルシリアにおけるフォスファディチルイノシトール4,5-ビスホスファートの蓄積につながっていることが示された.
アクチンのポリメリゼーションとシリアの先端の切除を伴う"シリアの解体"と呼ばれる新しいメカニズムを特定しました.
イントラフラジェラトランスポートB (IFT-B) の急性損失を伴う.

結論:

の切断は,プライマリの解体のための新しく定義されたメカニズムです.
このプロセスは,ミトゲンシグナル伝達を誘導することによって,プライマリシリウム生命周期と細胞分裂サイクルを結びつける.
この発見は,細胞増殖制御におけるシリア切断の役割を示唆し,発育と癌に潜在的な影響を及ぼします.

キーワード:

オーラ F-アクチングリインプ5e PI ((4,5) P ((2)) について主要なニキビ細胞サイクルエントリ斬首する分解するエクトソーム細胞外膀遺伝的にコードされたシリアアクトン阻害剤

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