Objective To investigate the effect of antisense CD147 on invasion of human cholangiocarci-noma cell line (QBC939).Methods A eukaryotic expression vector containing the CD147 cDNA in an antisense orientation was reconstructured. Human cholangiocarcinoma cell were divided into either a antisense CD147 treated group, empty vector group, or control group. QBC939 in antisense CD147 treated group was undergone transfection with CD147-pcDNA3.1(-); QBC939 in empty vector group was undergone transfection with pcD-NA3.1(-); and control group was treated with DMEM. Three groups were tested with MTT method for cell prolif-eration. Real-time PCR was used to detect the mRNA expression of CD147, MMP-2, MMP-9 and TIMP-2. West-ern blotting was used to detect the protein expression of CD147, MMP-2, MMP-9 and TIMP-2.Results A eu-karyotic expression vector containing the CD147 cDNA in an antisense orientation was successfully reconstruct-ed. In treated group, no reduction in the growth rate was found after infection with antisense CD147 (P>0.05). Compared with empty vector group and control group, the mRNA expression of CD147 and MMP-2 molecule was effectively inhibited in the antisense CD147 treated group (P<0.05), and there was no significant difference between empty vector group and control group (P>0.05). For mRNA expression of MMP-9 and TIMP-2 mol-ecule, there was no significant difference between the antisense CD147 treated group and empty vector group and control group (P>0.05). Compared with empty vector group and control group, the protein expression of CD147 and MMP-2 molecule was effectively inhibited in the antisense CD147 treated group (P<0.05), and there was no significant difference between empty vector group and control group (P>0.05). For protein expression of MMP-9 and TIMP-2 molecule, there was no significant difference between the antisense CD147 treated group and empty vector group and control group (P>0.05).Conclusion (1)Antisense CD147 has no effect on proliferation of QBC939 cell. (2)Antisense CD147 has no effect on the mRNA expression and protein expression of MMP-9 and TIMP-2 molecule in QBC939 cell. (3)Antisense CD147 can inhibit the mRNA expression and protein expression of MMP-9 and TIMP-2 molecule in QBC939 cell, which maybe can inlfuence cell invasion of QBC939.%目的 探讨反义CD147分子对人胆管癌细胞株QBC939侵袭性的影响.方法 构建含反义CD147分子片段的重组真核表达质粒,将人胆管癌细胞株QBC939分为三组:(1)反义CD147组,运用重组真核表达质粒asCD147-pcDNA3.1(-)转染QBC939细胞;(2)空质粒组,运用pcDNA3.1(-)空质粒转染QBC939细胞;(3)对照组,运用DMEM常规处理细胞.采用MTT法检测各组QBC939细胞的生长情况,RT-PCR和Western blotting法分别对三组QBC939细胞中的CD147、MMP-2、MMP-9、TIMP-2的mRNA表达水平及其对应蛋白的表达水平进行检测.结果 成功构建了携带反义CD147分子片段的重组真核表达质粒.MTT法检测显示:三组QBC939细胞的生长曲线及对数生长期情况无统计学差异(P>0.05).RT-PCR法检测显示:反义CD147组QBC939细胞中CD147和MMP-2分子的mRNA表达均低于空质粒组和对照组(P<0.05),且空质粒组与对照组相比无统计学差异(P>0.05);反义CD147组QBC939细胞中MMP-9和TIMP-2分子的mRNA表达与空质粒组和对照组相比无统计学差异(P>0.05).Western blotting检测发现:与空质粒组和对照组相比,反义CD147组QBC939细胞中CD147和MMP-2分子的蛋白表达明显降低(P<0.05),空质粒组与对照组相比无统计学差异(P>0.05);与空质粒组和对照组相比,反义CD147组QBC939细胞株中MMP-9和TIMP-2分子的蛋白表达无统计学差异(P>0.05).结论 (1)反义CD147对胆管癌细胞株QBC939的生长无影响;(2)反义CD147对胆管癌细胞株QBC939中MMP-9和TIMP-2的mRNA表达及对应蛋白表达无影响;(3)反义CD147降低胆管癌细胞株QBC939中CD147和MMP-2的mRNA表达及对应蛋白表达,可能会降低胆管癌细胞株的侵袭性.
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