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PARP抑制相关的异染色质在smarca4缺陷细胞中增加了DNA复制应激和ATR ...
ATR 激酶是应对 DNA 复制应激(RS)的关键调节因子,在癌细胞中,许多遗传突变会导致 RS 水平升高,而 ATR 在维持复制叉的稳定性和促进细胞存活方面发挥着重要作用。抑制 ATR 可使癌细胞因复制叉崩溃和有丝分裂灾难而死亡,因此 ATR 成为癌症治疗的潜在靶点。目前,基于 ATR 抑制剂(ATRi)的临床试验正在开展,但尚未建立有效的治疗方案。
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