MiRNA-424对人结肠癌细胞系Lovo细胞增殖及Rspo3基因表达的影响

China Cancer(2018)

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Abstract
[目的]探讨miR-424对人结肠癌Lovo细胞增殖及Rspo3基因表达的影响.[方法]运用实时荧光定量PCR检测Lovo细胞和正常结肠上皮组织NCM460细胞中miR-424与Rspo3 mRNA的表达水平.miR-424抑制剂(inhibitor)转染Lovo细胞后,观察细胞增殖能力,及miR-424、Rspo3 mRNA、miR-15/16/103表达水平,Western blot检测Rspo3蛋白表达水平.通过在线软件预测靶向Rspo3基因的miRNA,并用双荧光素酶报告基因实验验证.[结果]MiR-424与Rspo3 mRNA在结肠癌Lovo细胞中过表达(P<0.05).miR-424 inhibitor组Lovo细胞增殖受到明显抑制(P<0.05),且Rspo3基因表达量显著下降(P<0.05),miR-15/16/103均上调,其中miR-103上调最显著(P<0.05).双荧光素酶报告基因实验验证mi R-103可靶向调控Rspo3基因的表达.[结论] miR-424抑制剂可阻滞Lovo细胞增殖且通过反馈性上调miR-103靶向抑制Rspo3基因的表达.
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Key words
miR-424,colon cancer,Lovo cells,proliferation,Rspo3 gene
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