转录终止可以抵消WEE1抑制后的DNA损伤
Helga B Landsverk1, Lise E Sandquist1, Lilli T E Bay1
1Department of Radiation Biology, Institute for Cancer Research, Oslo University Hospital, 0379 Oslo, Norway.
Nucleic acids research
|January 22, 2026
概括
转录终止可以防止癌症治疗期间的DNA损伤. 当WEE1被阻止时,抑制终结因子会增加DNA损伤,这表明了新的治疗策略.
科学领域:
- 分子生物学分子生物学
- 癌症治疗方法 癌症治疗方法
- 对DNA损伤的反应反应
背景情况:
- 转录终止是基因表达的一个关键的调节过程.
- 了解转录终止在癌症治疗中的作用至关重要.
- 亚达沃谢蒂布抑制WEE1可以诱导DNA损伤,但潜在的机制需要进一步阐明.
研究的目的:
- 研究转录终止在缓解由WEE1抑制引起的DNA损伤中的作用.
- 探索针对转录终止与WEE1抑制剂结合的治疗潜力.
主要方法:
- 转录终止因子 (例如,WDR82,CPSF73) 和转录延长因子 (例如,CDC73) 的耗尽.
- 使用DRB和triptolide抑制活性转录.
- 治疗前列腺癌细胞的阿达沃谢蒂布和JTE-607 (一种CPSF73抑制剂).
- 评估DNA损伤和细胞活力.
主要成果:
- 削弱转录终结因子在S期增加了阿达沃谢蒂布诱导的DNA损伤.
- 抑制转录或共同消耗CDC73减少了阿达沃谢蒂布诱导的DNA损伤.
- 结合阿达沃谢蒂布和JTE-607,协同减少前列腺癌细胞存活率.
- 增加CPSF73表达与侵袭性前列腺癌相关.
结论:
- 转录终止对于在WEE1抑制后防止DNA损伤和细胞死亡至关重要.
- 针对转录终止因子,如CPSF73,与WEE1抑制剂结合,显示出前列腺癌治疗的前景.
- 转录终止保护措施防止在WEE1抑制期间转录和复制之间的冲突.
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