细胞对广泛的DNA复制应激反应的细胞反应
Jac A Nickoloff1, Aruna S Jaiswal2, Neelam Sharma1
1Department of Environmental and Radiological Health Sciences, Colorado State University, Ft. Collins, CO 80523, USA.
International journal of molecular sciences
|December 9, 2023
概括
由损伤或困难序列引起的DNA复制压力,触发细胞反应以保持基因组稳定性. 核酶是修复应力复制叉的关键,提供癌症治疗见解.
科学领域:
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
- 细胞生物学 细胞生物学
背景情况:
- 复制性DNA聚合酶遇到各种DNA损伤,导致复制压力,损害基因组稳定性.
- 复制压力源于DNA损伤,核酸池失衡,聚合酶抑制剂和具有挑战性的DNA结构,如G四重复.
- 细胞对复制应激的反应包括细胞循环停止,分叉崩,DNA修复和亡,其中特定的核酶起着关键作用.
研究的目的:
- 审查细胞对广泛复制压力的反应,包括损伤,聚合酶抑制,核酸枯竭和R循环.
- 突出核酶在解决停滞不前的复制分叉和保持基因组完整性的作用.
- 讨论复制压力反应对癌症生物学和治疗策略的影响.
主要方法:
- 关于细胞对复制应激反应的文献综述.
- 专注于各种核酶 (例如,MUS81,EEPD1,TATDN2) 在DNA修复和复制重启中的功能.
- 讨论癌症中的瘤性压力及其与复制应激反应途径的联系.
主要成果:
- 像EEPD1和TATDN2这样的核酶对于重新启动应激复制分叉和减轻特定类型的复制应激至关重要.
- 癌细胞中复制应激反应的失调有助于基因组不稳定性和癌症进展.
- 几个核酶在应力分叉处切割分支的DNA结构,促进修复和重新启动.
结论:
- 细胞对复制压力的反应对基因组稳定至关重要,涉及复杂的修复途径网络.
- 对复制应激机制的洞察,特别是核酶的作用,为针对合成致死性的新型癌症疗法提供了潜力.
- 了解瘤性压力及其与复制压力路径的相互作用对于癌症治疗开发至关重要.
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