患者衍生的子宫内膜异位症干细胞的DNA损伤反应中的缺陷
Kora Cadle1, Gwen Thomas1, Hunter E Schweiger1,2
1Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, California, 95064, United States.
bioRxiv : the preprint server for biology
|November 24, 2025
概括
子宫内膜异位症患者的月经层细胞表现出缺陷的DNA损伤反应 (DDR),显示出受损的修复机制. 这种缺陷,特别是在MRN复合体中,可以为子宫内膜异位症提供潜在的治疗点.
科学领域:
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
- 妇科 妇科 妇科 妇科
背景情况:
- 子宫内膜细胞在每一个周期中都会增殖和分化,面临复制压力和DNA损伤.
- DNA损伤可能导致衰老,一种不可逆转的细胞循环停止状态.
研究的目的:
- 为了研究从健康捐赠者和患有子宫内膜异位症的患者获得的子宫内膜异位细胞 (MenSCs) 中的DNA损伤反应 (DDR).
- 通过了解子宫内膜异位症中DDR缺陷来确定潜在的治疗点.
主要方法:
- 从健康和子宫内膜异位症患者的MenSC中比较DDR.
- 使用氧尿素 (Hu) 诱导复制应激.
- 对MRN复杂基因和蛋白质表达的分析.
- 治疗后细胞增殖和殖民地形成的评估.
主要成果:
- 与健康细胞相比,子宫内膜异位症男性细胞表现出有缺陷的DDR,即使在结合时,在G1阶段有更多的53BP1核体 (NBs) 和较少的衰老.
- 素尿素治疗激活了DDR,并在子宫内膜异位症细胞中增加了53BP1-NBs,同时降低了MRN复合基因的下调 (RAD50,NBS1).
- 宫内膜异位症男性细胞显示出比健康细胞更高的殖民地形成,但胡治疗抑制了两者的殖民地形成,这表明压力后的生长潜力受损.
结论:
- 与子宫内膜异位症相关的MenSCs具有缺陷的DNA损伤反应.
- 发现的DDR缺陷,特别是涉及MRN复合体,对子宫内膜异位症具有潜在的治疗脆弱性.
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