G1/S阻害剤とSWI/SNF複合体の制御細胞サイクル出口は,筋肉の差別化中に発生する
Suzan Ruijtenberg1, Sander van den Heuvel1
1Developmental Biology, Department of Biology, Faculty of Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, the Netherlands.
Cell
|July 7, 2015
まとめ
分化中の細胞サイクル終了には,冗長なメカニズムが含まれています. SWI/SNF複合体とG1/S阻害剤は,細胞分裂を止めるための代替経路を提供し,腫瘍のフェノタイプを防ぐ.
科学分野:
- 発達生物学 発達生物学とは
- 細胞生物学 細胞生物学
- 遺伝学 遺伝学とは
背景:
- 細胞循環の終了は,生物の発達,組織の維持,そして制御不能な細胞増殖を防ぐために不可欠です.
- 微分化中に細胞サイクル停止を制御する分子機構を理解することは極めて重要です.
研究 の 目的:
- 微分化中の細胞サイクル終了のインビボメカニズムを調査する.
- 細胞分裂停止の冗長な調節体を特定するために.
主な方法:
- 条件付きノックアウトとCaenorhabditis elegansの系統追跡システムの開発.
- 系統特有の遺伝子不活性化と遺伝子スクリーニング.
- SWI/SNF染色体リモデリング複合体とG1/S阻害剤の分析
主要な成果:
- 細胞サイクル阻害剤とSWI/SNF複合体との間に広範な機能的な冗長性が発見されました.
- SWI/SNFおよびG1/S阻害剤の同時無効化は,C. elegans.の継続的な増殖と腫瘍フェノタイプにつながった.
- SWI/SNFは,hlh-1 MyoDと作用し,ポリコンブ抑制を敵対させ,シーエ-1 サイクリンEの転写を抑制する.
結論:
- SWI/SNFおよびG1/S阻害剤は,端末分化中に細胞サイクル停止のための代替経路を提供します.
- これらの発見は,ヒトの癌におけるSWI/SNF遺伝子変異の洞察を提供します.
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