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首页> 外文期刊>Cancer Cell >Mismatch repair proteins as sensors of alkylation DNA damage.
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Mismatch repair proteins as sensors of alkylation DNA damage.

机译:错配的修复蛋白可作为烷基化DNA损伤的传感器。

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摘要

The DNA mismatch repair (MMR) system maintains genome integrity by correcting replication errors. MMR also stimulates checkpoint and cell death responses to DNA damage suggested by the resistance of MMR-defective tumor cells to several chemotherapeutic agents. MMR-dependent cytotoxic response may result from futile repair; however, MMR-mediated apoptosis has been genetically separated from its repair function. In a recent issue of Molecular Cell, Yoshioka and coworkers show that MMR complexes (MutSalpha and MutLalpha) are required for the recruitment of ATR-ATRIP to sites of alkylation damage, demonstrating that MMR complexes can function as sensors in DNA damage signal transduction.
机译:DNA错配修复(MMR)系统通过纠正复制错误来维持基因组完整性。 MMR还刺激针对DNA损伤的检查点和细胞死亡反应,这是MMR缺陷型肿瘤细胞对几种化学治疗剂的抗性所暗示的。无效的修复可能导致MMR依赖性细胞毒性反应;然而,MMR介导的细胞凋亡已从其修复功能上遗传分离。在最近一期的《分子细胞》中,吉冈及其同事表明,将ATR-ATRIP募集到烷基化损伤位点需要MMR复合物(MutSalpha和MutLalpha),这表明MMR复合物可以充当DNA损伤信号转导的传感器。

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