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患者衍生的结肠直肠癌细胞外矩阵调节癌细胞干细胞标记物标记物

Ângela Marques-Magalhães^1,2, Sara Monteiro-Ferreira^1,3, Pedro Amoroso Canão⁴

¹i3S-Institute for Research and Innovation in Health, University of Porto, Rua Alfredo Allen 208, 4200-135 Porto, Portugal.

International journal of molecular sciences

|April 17, 2025

概括

瘤细胞外基质增强了癌症干细胞的特性,增加了NANOG和SOX2.2等关键基因的表达. 这表明患者衍生矩阵可以模拟茎状性,并确定结肠癌的治疗点.

科学领域:

癌症生物学癌症生物学
细胞外矩阵研究细胞外矩阵研究
干细胞科学干细胞科学

背景情况:

已知瘤细胞外基质 (ECM) 支持癌症干细胞 (CSC) 利基.
然而,它在调节CSC特性方面的具体作用尚不清楚.

研究的目的:

研究瘤ECM如何影响CSC属性.
评估患者衍生的脱细胞化矩阵的潜力,作为研究干度的模型.

主要方法:

将正常和瘤结肠组织与结肠癌细胞配对进行脱细胞化和再细胞化 (HT-29,HCT-15).
通过qRT-PCR和流细胞计对干基因表达 (NANOG,SOX2,OCT4,SNAI1) 的分析.
使用ELISA和zymography量化TGF-β分泌和MMP活性.
基因表达与患者生存数据的相关性.

主要成果:

与正常矩阵相比,瘤脱细胞化矩阵在HT-29细胞中显著增强了NANOG,SOX2,OCT4和SNAI1的表达.
这与干性受体 (CD44,CD133,CD166) 的表达增加以及TGF-β,MMP-2和MMP-9的分泌量增加有关.
患者队伍中这些干基因的更高表达与整体存活率较差相关.

结论:

正常和瘤矩阵表现出明显的干度促进潜力.
来自患者的脱细胞化矩阵作为一种有价值的3D模型,用于发现茎状特征.
已识别的干性相关基因可能是未来结肠癌治疗的点.

关键词:

癌症干细胞是癌症干细胞.结肠直肠癌是什么意思细胞外矩阵是细胞外矩阵.组织脱细胞化.

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