硬度依赖的MSC定位和分化为CAFs - 对乳腺癌入侵的影响
Neha Saxena1,2, Soura Chakraborty3, Sarbajeet Dutta2
1Department of Chemical Engineering, IIT Bombay,Mumbai 400076, India.
Journal of cell science
|December 18, 2023
概括
迁移到转移前乳腺瘤的介质干细胞 (MSC) 分化为与癌症相关的纤维细胞 (CAF). 这些CAF增强了三阴性乳腺癌 (TNBC) 的侵袭和转移,特别是在更硬的细胞外基质上.
科学领域:
- 在瘤学瘤学.
- 生物材料科学 生物材料科学
- 细胞生物学 细胞生物学
背景情况:
- 细胞异质性和细胞外矩阵 (ECM) 硬是乳腺癌侵入性的关键驱动因素.
- 瘤微环境,包括介质干细胞 (MSC),在癌症进展中起着关键作用.
研究的目的:
- 为了研究癌细胞和MSC之间依赖于度的交叉声调在调节乳腺癌入侵中的作用.
- 为了确定特定的细胞相互作用和驱动三阴性乳腺癌 (TNBC) 转移的分子机制.
主要方法:
- 对单细胞RNA测序数据集的分析,以确定细胞亚群.
- 在不同的硬度 (0.5,2,5 kPa) 的水凝上培养TNBC细胞 (MDA-MB-231),以模仿ECM变化.
- 评估MSC化学反应,分化为癌症相关纤维细胞 (CAF),以及它们对癌症细胞行为的影响.
主要成果:
- 一个TNBC细胞子群共同表达MSC和CAF标记物.
- 在中间硬度凝 (2kPa) 上,从TNBC细胞中得到的条件介质通过TGFβ1和收缩性促进MSC化学反应和CAF分化.
- 在2kPa凝上的MSC衍生CAF增强了TNBC的扩散,入侵和对剪切应力的抵抗.
结论:
- 转移到转移前利基的MSC并分化为CAF,积极促进TNBC的乳腺癌入侵和转移.
- 脑内核硬度是MSC-CAF相互作用和随后的癌症进展的关键调节者.
- 准MSC-CAF交叉对TNBC来说是一个潜在的治疗策略.
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