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目的探讨miR-219a-5p对皮肤鳞状细胞癌细胞凋亡的影响以及潜在的作用机制。方法设置miR-con组、miR-219a-5p组、anti-miR-con组、anti-miR-219a-5p组、miR-219a-5p+pcDNA组、miR-219a-5p+pcDNA-SMC4组、miR-con+SMC4-WT组、miR-con+SMC4-MT组、miR-219a-5p+SMC4-WT组、miR-219a-5p+SMC4-MT组,转染均用脂质体法。qRT-PCR检测miR-219a-5p和SMC4 mRN