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首页> 外文期刊>Journal of cellular biochemistry. >miR‐200c, a tumor suppressor that modulate the expression of cancer stem cells markers and epithelial‐mesenchymal transition in colorectal cancer
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miR‐200c, a tumor suppressor that modulate the expression of cancer stem cells markers and epithelial‐mesenchymal transition in colorectal cancer

机译:miR-200c,一种调节癌症干细胞标志物和上皮 - 间充质转换在结肠直肠癌中的表达的肿瘤抑制剂

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Abstract Colorectal cancer (CRC) is the most frequently diagnosed cancer and the most common gastrointestinal cancer worldwide. Due to the presence of populations of cancer stem cells (CSCs) that cause recurrence, the possibility of cancer treatment is very low. The aim of current study was to evaluate the inhibitory role of miR‐200c on EMT, CSCs markers and β‐catenin in HCT‐116 and SW48 cell lines. The expression of miR‐200c, EMT‐related genes, CSCs markers, and β‐catenin were quantified by qRT‐PCR. Further, expression of β‐catenin and EMT‐related proteins, and migration were analyzed by Western blot, and migration assay kit, respectively. Spheroid formation assay was used to enrich colorectal CSCs from colorectal cancer cell lines. LNA‐anti‐miR‐200c suppressed the endogenous miR‐200c in transfected cells compared with the control. qRT PCR and Western blot analysis of LNA‐anti‐miR‐200c transfected cells revealed a considerable increase in CSCs markers, vimentin, ZEB‐1, N‐cadherin, and β‐catenin expression, with a concomitant reduction in E‐cadherin expression level. Migration and sphere forming ability of HCT‐116 and SW48 cells increased in transfected cells. The results of current study revealed that downregulation of miR‐200c may be an important factor for the overexpression of CSCs markers and EMT related genes via β‐catenin upregulation in CRC.
机译:结直肠癌(CRC)是世界上最常见的癌症,也是最常见的胃肠道肿瘤。由于存在导致复发的癌症干细胞(CSC),癌症治疗的可能性非常低。当前研究的目的是评估miR-200c对HCT-116和SW48细胞系中EMT、CSC标记物和β-连环蛋白的抑制作用。通过qRT-PCR对miR-200c、EMT相关基因、CSCs标记物和β-catenin的表达进行量化。此外,β-连环蛋白和EMT相关蛋白的表达以及迁移分别通过Western blot和迁移分析试剂盒进行分析。球体形成试验用于从结直肠癌细胞系中富集结直肠癌干细胞。与对照组相比,LNA-抗-miR-200c在转染细胞中抑制内源性miR-200c。对LNA-anti-miR-200c转染细胞的qRT PCR和Western blot分析显示,CSCs标记物、波形蛋白、ZEB-1、N-cadherin和β-catenin表达显著增加,同时E-cadherin表达水平降低。转染细胞中HCT-116和SW48细胞的迁移和球体形成能力增强。目前的研究结果表明,miR-200c的下调可能是通过β-catenin上调在大肠癌中过度表达CSCs标记物和EMT相关基因的一个重要因素。

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