转化生长因子-β调节肝细胞癌的CD44亚种群上的癌症干细胞特征
Mario Alejandro Aguilar-Chaparro1, Sonia Andrea Rivera-Pineda1, Hury Viridiana Hernández-Galdámez1
1Departamento de Biología Celular, Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV), México City, México.
Journal of cellular biochemistry
|February 13, 2025
概括
转化生长因子-β (TGF-β) 通过调节CD44标准 (CD44std) 和CD44变异9 (CD44v9) 亚群,改变肝细胞癌 (HCC) 中的癌症干细胞 (CSC) 特性,影响MAPK信号传递和细胞行为.
科学领域:
- 肝细胞癌 (HCC) 研究研究
- 癌症干细胞 (CSC) 的生物学
- 分子信号通道的分子信号通道.
背景情况:
- 肝细胞癌 (HCC) 是一种主要的癌症,对向癌症干细胞 (CSC) 的兴趣日益增加.
- CD44异型是HCC中关键的CSC标志物,与通过转化生长因子-β (TGF-β) 诱导的上皮细胞-介质细胞过渡 (EMT) 有关.
- 在HCK中,CSC特征,CD44异型和TGF-β对CD44亚群的影响之间的精确相互作用尚未完全理解.
研究的目的:
- 调查TGF-β如何影响表达CD44标准 (CD44std) 和CD44变异9 (CD44v9) 的HCC亚群中的蛋白质组变化和CSC特征.
主要方法:
- 用TGF-β对SNU-423 HCC细胞进行治疗.
- 对CD44亚种群进行形态评估和流细胞计.
- 蛋白质组分析专注于信号通路.
- 验证基因表达 (Sox2,Nanog) 和功能测试 (殖民地/球形形成,迁移,入侵).
主要成果:
- TGF-β诱导了形态变化,减少了CD44v9+细胞,并改变了CD44std的表达.
- 蛋白质组分析显示了线粒激活蛋白激酶 (MAPK) 途径的显著变化.
- TGF-β上调的CD44std和下调的CD44v9表达,调节的Sox2/Nanog,以及差异影响的CSC特征.
- TGF-β促进了EMT,增强了分群中的迁移和入侵以及CD44v9细胞中的粘附.
结论:
- TGF-β在HCC中动态调节CD44std和CD44v9亚群,通过MAPK信号影响CSC特征.
- 了解这些相互作用对于开发针对性治疗HCC至关重要.
- 这项研究澄清了CD44异型体在TGF-β介导的HCC中CSC调节中的作用.
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