与祖先相关的树皮变异会影响乳腺上皮细胞入侵
bioRxiv : the preprint server for biology
|January 7, 2025
概括
表达P ROCR,ZEB1和PDGFRα (PZP细胞) 的流体细胞促进乳腺癌的侵袭,无论遗传血统如何. 它们在非洲祖先乳腺组织中的丰富可能会导致结果的差异.
科学领域:
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
背景情况:
- 乳腺癌不成比例地影响非洲血统 (AA) 的女性,导致与欧洲血统 (EA) 人口相比死亡率更高.
- 干细胞种群,包括表达P ROCR,ZEB1和PDGFRα (PZP细胞) 的细胞,都与乳腺癌的进展有关.
- 在正常的AA乳腺组织和瘤邻近的EA乳腺组织中,PZP细胞富含,这表明它在与祖先相关的差异中发挥了作用.
研究的目的:
- 研究PZP细胞对人类乳腺上皮细胞AA和EA瘤原性表型的影响.
- 确定PZP细胞对乳腺癌结果差异的生物基础的贡献.
- 阐明PZP细胞影响乳腺癌侵袭的机制.
主要方法:
- 利用3D细胞模型在体外模拟瘤入侵.
- 同培养的人类乳腺上皮细胞与来自不同祖先的PZP细胞.
- 分析了细胞行为,包括细胞外矩阵入侵和领袖-追随者动态.
- 研究了AKT信号通路激活和纤维内素沉积的作用.
主要成果:
- PZP细胞赋予了乳腺上皮细胞的侵袭能力,而不依赖于遗传血统.
- 在通过PZP细胞调解的细胞外矩阵入侵期间观察到领导者-追随者行为.
- 增强的入侵是由于AKT激活和PZP细胞纤维菌素沉积的结合.
- 阻断AKT激活显著降低了上皮细胞的侵入能力.
结论:
- PZP细胞在促进乳腺癌细胞通过AKT激活和纤维菌素沉积来侵入乳腺癌细胞方面发挥着至关重要的作用.
- 在AA乳腺组织中PZP细胞的丰富可能有助于观察到的乳腺癌预后差异.
- 了解PZP细胞的作用,可以了解乳腺癌的分子基础,以及祖先之间的结果差异.
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