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The influence of G_2 arrest abrogation on the long-term cytotoxicity of different genotoxic lesions

机译:G_2阻滞废除对不同遗传毒性病变长期细胞毒性的影响

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摘要

The ability of DNA-damaged cells to arrest in the G_2 phase of the cell cycle is believed to enhance cellular survival by providing additional time for the repair of DNA lesions.1'2 Arrest in G_2 is regulated by checkpoint control systems and can be abrogated by chemical inhibition of checkpoint kinases.3 Combined treatment of tumor cells with conventional DNA-damaging agents and G_2 checkpoint abrogators often leads to enhanced cytotoxicity and improved therapeutic effects.4-5 The main goal of the current work was to establish the impact of G_2 arrest, transition into mitosis and induction of apoptotic cell death on the long-term viability of tumor cells following exposure to genotoxic agents.
机译:DNA损伤的细胞在细胞周期G_2期停滞的能力被认为可以通过提供额外的DNA损伤修复时间来提高细胞存活率。G_2中的1'2逮捕是由检查点控制系统控制的,可以废除3常规DNA损伤剂与G_2检查点消除剂联合治疗肿瘤细胞通常可增强细胞毒性并改善治疗效果。4-5目前工作的主要目标是确定G_2的作用暴露于遗传毒性剂后,对肿瘤细胞的长期生存能力有抑制作用,转变为有丝分裂并诱导凋亡细胞死亡。

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