老化和BRCA突变的干细胞驱动上皮细胞转化
Geyon L Garcia1, Taylor Orellana2, Grace Gorecki1
1University of Pittsburgh Medical Center, Pittsburgh, PA, United States.
高风险的介质细胞/干细胞 (hrMSCs) 通过改变输卵管细胞来驱动高等级的血清性卵巢癌的发病. 这些hrMSC与BRCA1/2突变和衰老有关,为早期检测和预防提供了新的途径.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 干细胞生物学 干细胞生物学
背景情况:
- 高度血清性卵巢癌 (HGSOC) 发病机制仍然不太清楚,这阻碍了预防和早期检测工作.
- 现有的模型表明,输卵管上皮细胞 (FTE) 转化为前体病变 (STIC),导致HGSOC.
研究的目的:
- 研究介质干细胞在STIC病变形成之前的HGSOC启动中的作用.
- 为了确定参与卵巢癌发展早期阶段的新型细胞参与者.
主要方法:
- 在输卵管微环境中表观遗传改变的介质干细胞/干细胞 (hrMSCs) 的表征.
- 评估hrMSC与FTE细胞的相互作用,包括DNA损伤和生存效应.
- 在体内研究以评估hrMSCs在诱导恶性转变和转移中的作用.
主要成果:
- 确定了一种新的细胞群,hrMSCs,在STIC病变之前存在,并富含STIC流体.
- 证明hrMSCs促进FTE细胞中的DNA损伤和生存,从而导致恶性转变和体内转移.
- 发现的hrMSCs在BRCA1/2突变载体中显著丰富,并且随着年龄的增长而增加.
结论:
- hrMSCs在通过树皮介导的上皮转化诱发HGSOC启动方面发挥着关键作用.
- 这些发现对开发用于卵巢癌检测和预防的新策略具有重大意义.
- 鉴定hrMSCs为癌症发病提供了新的视角,可能适用于各种癌症类型.
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