【摘 要】
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目的 观察小干扰RNA(siRNA)抑制REG1A(REG1A)基因的表达对人膀胱癌EJ细胞增殖及侵袭的影响.方法 化学合成针对REG1A基因的3对siRNA,使用脂质体转染EJ细胞.实时定量聚合酶链反
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目的 观察小干扰RNA(siRNA)抑制REG1A(REG1A)基因的表达对人膀胱癌EJ细胞增殖及侵袭的影响.方法 化学合成针对REG1A基因的3对siRNA,使用脂质体转染EJ细胞.实时定量聚合酶链反应( Real-time PCR)和免疫印迹(Western blot)法分别检测转染细胞REG1A的mRNA及蛋白表达,细胞计数试剂盒(CCK-8)法检测转染细胞的增殖,流式细胞术检测转染细胞的周期,Transwell侵袭小室检测转染细胞的侵袭能力.结果 REG1A siRNA转染组EJ细胞与空白对照Mock组比较,REG1A的mRNA及蛋白表达明显下调,分别下调了(75.58±1.17)％及(51.22±6.63)％ (P ＜0.01)；REG1A siRNA转染组EJ细胞增殖速度较空白对照Mock组及阴性对照NC组明显减慢(P＜0.05),且G0/G1期细胞百分比明显增多,为(43.37±2.15)％(P＜0.01)；REG1AsiRNA转染组EJ细胞穿过Transwell小室的数目为(95.84±6.49)个,明显少于空白对照Mock组的(179.93 ±8.38)个和阴性对照NC组的(186.96±6.28)个(P＜0.01).结论 REG1A siRNA能抑制体外培养的膀胱癌EJ细胞增殖并降低其侵袭能力.
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