抑制Dicer基因对胆管癌细胞株TFK-1增殖、迁移和侵袭的影响

Dicer knockdown enhance the proliferation, migration and invasion of cholangiocarcinoma cell line TFK-1

目的 探讨抑制Dicer基因后对胆管癌细胞株TFK-1增殖、迁移和侵袭能力的影响.方法 设计合成针对Dicer基因的RNAi序列,应用脂质体介导方法转染至胆管癌细胞株TFK-1,实时PCR与蛋白印迹检测Dicer表达,CCK8法、划痕实验和Transwell实验检测细胞增殖、迁移和侵袭能力变化.结果 与空白对照组和阴性对照组比较,转染Dicer-siRNA组的Dicer基因mRNA水平在转染后48 h明显降低（P＜0.01）;蛋白水平在96 h明显降低（P＜0.01）;转染Dicer-siRNA序列组的细胞增殖、迁移和侵袭能力明显增强.结论 抑制Dicer基因在胆管癌细胞TFK-1中的表达能够增强细胞的增殖、迁移和侵袭能力.

Objective To investigate the effect of Dicer knockdown on the proliferation,migration and invasion of cholangiocarcinoma cell line TFK-1.Methods The study used liposome-mediated method to transfect Dicer-siRNA into TFK-1 cells.The mRNA and protein expressions of Dicer after transfection were detected by real-time PCR and western blot.CCK8 assay,scratch test and transwell assays were performed to analyze the influence on the proliferation,migration and invasion of cells,respectively.Results Compared with the control,Dicer mRNA level at 48 h and Dicer protein level at 96 h were both significantly reduced after transfection with Dicer-siRNA （P 〈 0.01）.CCK8 assay revealed that the absorbance value significantly increased at 72 h,96 h and 120 h after transfection （P 〈0.01）.Scratch test and transwell assay showed that the migration ability and the number of invasive cells significantly increased （P 〈 0.05）.Conclusion Dicer knockdown enhanced the proliferation,migration and invasion of cholangiocarcinoma cell line TFK-1.