摘要
癌症是由基因组变化引起的遗传疾病;然而,表观遗传改变在肿瘤发生和癌症进展过程中与这些变化协同作用。表观遗传变异作为肿瘤进展、转移和治疗抗性的重要调节因子而受到越来越多的关注。 CpG 岛的异常 DNA 甲基化是各种肿瘤抑制基因的表观遗传介导的基因沉默的中心事件。 DNA 甲基转移酶 1 (DNMT1) 主要在细胞增殖中半甲基化 DNA 底物上的 CpG 岛上发生甲基化。 DNMT1 已被证明在各种癌症类型中过表达,并表现出促进肿瘤的潜力。 DNMT1 靶向癌症治疗的主要缺点是核苷和非核苷类 DNMT1 抑制剂引起的不良反应。本文重点介绍了各种 microRNA (miRNA) 对 DNMT1 的调节,这些 microRNAs 可能被指定为未来的 DNMT1 调节剂,并重点介绍了 DNMT1 如何调节参与肿瘤抑制的各种 miRNA。重要的是,本综述探讨了 DNMT1 和某些 miRNA 之间相互抑制在致瘤潜力中的作用。因此,本综述旨在利用某些 miRNA 与传统的 DNMT1 抑制剂结合作为一种新型癌症疗法,提出一种有效且具有战略意义的方法。还确定了选择与 DNMT1 调控相关的 miRNA 候选物,这些候选物不仅可以作为癌症诊断和预后的潜在生物标志物,还可以预测癌细胞中异常甲基化活性的存在。
关键词: DNA 甲基转移酶、DNMT1、表观遗传学、miRNA、癌症、癌症治疗。
图形摘要
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