山东大学学报 (医学版) ›› 2020, Vol. 58 ›› Issue (9): 34-39.doi: 10.6040/j.issn.1671-7554.0.2020.0748
孙薏丰1,高玉2,梁永媛1,高杨1
SUN Yifeng1, GAO Yu2, LIANG Yongyuan1, GAO Yang1
摘要: 目的 检测人复合素2(CPLX2)在肝癌组织中的表达,探讨其对肝癌细胞增殖与侵袭的影响。 方法 采用RT-qPCR和Western blotting方法检测30例配对肝癌组织和癌旁组织中CPLX2 mRNA和蛋白水平的表达。利用Lipofectamine 2000转染两条CPLX2小分子干扰RNA(siRNA)至肝癌Huh7细胞,RT-qPCR和Western blotting方法验证转染后的干扰效率。细胞实验分4组:空白组、对照siRNA组,CPLX2 siRNA1组和CPLX2 siRNA2组。噻唑蓝(MTT)法和Transwell实验检测细胞增殖和侵袭能力。采用成组t检验分析siRNA干扰效果和细胞侵袭能力的差异,双因素方差分析法两两多重比较各组细胞增殖能力的差异。 结果 CPLX2在肝癌组织(22.69±14.78)中的表达高于癌旁组织(4.03±2.65),差异有统计学意义(t=5.941, P<0.001)。CPLX2 mRNA在两siRNA干扰组的表达量分别为0.34±0.02和0.48±0.01,均低于对照siRNA组(0.88±0.02)和空白组(1.00±0.05),差异有统计学意义(P<0.001),mRNA和蛋白水平均显示siRNA干扰效果较好。MTT实验证实CPLX2两siRNA干扰组的细胞增殖能力低于对照siRNA组(P<0.001)和空白组(P<0.001)。Transwell migration实验显示每个检测视野CPLX2 siRNA1组细胞的穿膜细胞数(37.0±2.0)和CPLX2 siRNA2组细胞的穿膜细胞数(46.3±2.5)低于空白组(88.0±2.0)和对照siRNA组(77.0±4.4)。Transwell invasion实验结果显示,每个检测视野CPLX2 siRNA1组细胞的穿膜细胞数(29.7±2.5)和CPLX2 siRNA2组细胞的穿膜细胞数(41.0±2.6)低于与空白组(74.7±3.1)和对照siRNA组(68.7±1.5),差异有统计学意义(P<0.001)。 结论 CPLX2在肝癌组织中表达升高,下调其表达可抑制肝癌细胞Huh7的增殖和侵袭,CPLX2可能在促进肝癌的发生发展过程发挥重要作用。
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