miR-185靶向Six1对肺癌上皮-间质转化过程的影响及其机制
Chinese Journal of Clinical and Experimental Pathology(2017)
Abstract
目的 探讨miR-185影响人肺癌细胞迁移和侵袭能力的分子机制.方法 在肺癌细胞系H520和A549中转染miR-185mimic获得miR-185过表达,利用Transwell实验和细胞划痕实验检测细胞的迁移和侵袭能力;荧光素酶报告实验验证miR-185靶向Six1基因;采用qRT-PCR和Western blot法检测miR-185对细胞中Six1基因表达水平的影响;Western blot法检测miR-185过表达对肺癌细胞上皮-间质转化(epithelial-mesenchymal transition,EMT)过程的影响.结果 miR-185过表达降低肺癌细胞的迁移和侵袭能力(P<0.05),上皮细胞标志物E-cadherin表达升高(P<0.01),间质细胞标志物vimentin表达降低(P<0.01),H520细胞过表达miR-185后,Six1基因表达水平降低(P<0.01),miR-185调控肺癌细胞的迁移和侵袭是通过靶向Six1基因实现的.结论 miR-185靶向Six1基因调控人肺癌细胞EMT途径.
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Key words
lung neoplasms,migration,invasion,miR-185,Six1
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