| 摘 要： | 目的分析miR-320对结肠癌SW480细胞增殖、侵袭的影响及其作用机制。方法将SW480细胞分为SW480组、mimic对照组、miR-320 mimic-/FoxM1 wt+/FoxM1 mut-组、miR-320 mimic+/FoxM1 wt+/FoxM1 mut-组、miR-320 mimic-/FoxM1 wt-/FoxM1 mut+组、miR-320 mimic+/FoxM1 wt-/FoxM1 mut+组、miR-320 mimic组、pcFoxM1组、miR-320 mimic+pc-FoxM1组;检测各组细胞内凋亡、增殖、侵袭等相关指标。结果 miR-320 mimic细胞表达miR-320量显著升高(P0.05),FoxM1表达量显著降低(P0.05),荧光素酶报告实验结果显示,与FoxM1 wt组比较,FoxM1 wt+miR-320组荧光素酶活性显著降低(P0.05);miR-320 mimic+pc-FoxM1组细胞细胞增殖数及PCNA蛋白表达水平均显著高于miR-320 mimic组(P0.05);与miR-320 mimic组相比,miR-320 mimic+pc-FoxM1组细胞cleaved Caspase-9表达水平显著降低(P0.05);与miR-320 mimic组相比,miR-320 mimic+pc-FoxM1组细胞迁移率显著升高(P0.05);与miR-320 mimic组相比,miR-320 mimic+pc-FoxM1组细胞侵袭数显著升高(P0.05)。结论 miR-320通过靶向调控FoxM1实现抑制结肠癌SW480细胞增殖、侵袭能力。
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