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miR-215对胃癌细胞侵袭转移能力的影响及机制 被引量:4

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摘要 目的探讨miR-215对胃癌细胞侵袭转移能力的影响及作用机制。方法通过RT-PCR检测miR-215在高转移胃癌细胞株NCIN87,BGC-823,RF-48及低转移细胞株HGC-27及MKN-28中的表达;Transwell迁移及侵袭实验检测miR-215抑制剂对胃癌细胞迁移及侵袭能力的影响;Western印迹检测miR-215抑制剂对胃癌细胞活化白细胞黏附分子(ALCAM),基质金属蛋白酶(MMP)-2,MMP-9,上皮细胞-间充质转化(EMT)相关蛋白E-钙黏附素(E-cadherin),波形蛋白(Vimentin)表达量的影响。结果 RT-PCR结果证实miR-215在高转移胃癌细胞株中的表达高于低转移胃癌细胞中的表达,且miR-215在BGC-823细胞中的表达最高,因此选用BGC-823作为后续实验细胞株。miR-215抑制剂转染BGC-823细胞48 h后,发现下调miR-215表达能显著抑制BGC-823细胞迁移及侵袭能力,并能下调ALCAM,MMP-2,MMP-9及Vimentin表达,上调E-cadherin表达。结论miR-215低表达能显著抑制胃癌细胞BGC-823侵袭及转移能力,与下调MMPs及抑制EMT生成有关。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2015年第21期6064-6067,共4页 Chinese Journal of Gerontology
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