USP33は,セントリオラータンパク質CP110のデウビキチン化により,セントロソームの生体生成を調節する
Ji Li1, Vincenzo D'Angiolella, E Scott Seeley
1Department of Pathology and Cancer Institute, Smilow Research Center, New York University School of Medicine, 522 1st Avenue, New York, New York 10016, USA.
Nature
|March 15, 2013
まとめ
デウビキチン化酵素USP33は,CP110のレベルを制御することによって,センターソームの複製を調節する. この発見は,細胞分裂の精度を維持するための新しいメカニズムを明らかにし,潜在的ながん治療戦略を提供します.
科学分野:
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
背景:
- セントロソームの複製は細胞分裂に不可欠であり,誤差はゲノムの不安定性を引き起こします.
- CP110は,センターロールの複製と延長を調節し,そのレベルはSCF ((サイクリンF) ユビキチネーションによって厳密に制御されます.
- CP110の調節不良は,センターゾームの増幅や,センターゾール組立やシリオゲネシスの欠陥につながる.
研究 の 目的:
- センターソーム複製の新たなレギュレータを特定する.
- CP110レベルとセンターソームホメオスタシスの制御におけるデウビキチン化酵素の役割を明らかにする.
- 腫瘍発生におけるセンターソーム増幅を標的とした治療戦略を探求する.
主な方法:
- 人体細胞におけるCP110とUSP33の相互作用と局所化を調査した.
- CP110.0上のUSP33のデウビキチン作用を評価した.
- センターソーム増幅と細胞分裂に対するUSP33アブレーションの効果を分析した.
主要な成果:
- USP33はCP110と相互作用し,SとG2/Mの段階でセントリオールに局所化する.
- USP33は特にデウビキチネート CP110を用い,SCF ((サイクリンF) 媒介によるユビキチネーションを抑制する.
- USP33は,超数値の中心焦点を促進し,その欠如はCP110を不安定化し,センターソーム増幅を阻害する.
結論:
- USP33は,センターソームホメオスタシスを調節する最初の同定された中心部デウビキチン化酵素です.
- USP33はSCF ((cyclin F) 媒介によるCP110の分解をカウントし,センターソームの複製制御を維持します.
- この発見は,USP33がセンターソーム増幅のがんの潜在的な治療標的であることを示唆しています.
関連する概念動画
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