RNAPIIプールの調節はDNA損傷応答に不可欠である
Ana Tufegdžić Vidaković1, Richard Mitter2, Gavin P Kelly2
1Mechanisms of Transcription Laboratory, The Francis Crick Institute, 1 Midland Road, London NW1 1AT, UK.
Cell
|March 7, 2020
まとめ
RPB1 K1268でのRNAポリメラーゼII (RNAPII) のユビキティレーションは,修復とRNAPIIの分解を含むDNA損傷反応を調整する. この調節は細胞の生存と転写回復に不可欠です.
科学分野:
- 分子生物学
- 細胞生物学
- 遺伝学
背景:
- 細胞はDNAの損傷に対する複雑な反応を活性化します DNAの修復と転写の停止を含みます
- RNAポリメラーゼII (RNAPII) の分解は,DNA損傷反応における重要な出来事である.
研究 の 目的:
- DNAの損傷反応を結びつける 調整メカニズムを調査する
- DNA 損傷反応における RNAPII ユビキティレーションの役割を解明する.
主な方法:
- 特定のライシン残留物 (RPB1 K1268) でのRNAPIIの普遍化に焦点を当てます.
- DNA修復とRNAPII分解に対するK1268のユビキティレーションの影響を調査した.
- 転写回復と遺伝子毒性ストレスに対する細胞応答におけるRNAPIIの安定性の役割を調べた.
主要な成果:
- RPB1 K1268でのRNAPIIの普遍化は,DNA損傷反応の調整のための焦点として機能する.
- K1268の普遍化はDNA修復に不可欠であり,RNAPIIの分解をシグナルし,細胞の生存を促進する.
- RNAPIIの分解は転写の停止につながり,その持続的な枯渇は転写の回復を阻害する.
結論:
- 全局的なRNAPIIレベルの調節は,細胞のDNA損傷反応に不可欠です.
- RNAPIIプールサイズは,ゲノム不安定性障害および正常な細胞における細胞特有の転写プログラムに影響を与える可能性があります.
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