TRIM14对宫颈癌细胞增殖、迁移和侵袭及上皮—间充质转化的影响及其作用机制

Effect of TRIM14 on proliferation, migration, invasion and epithelial-to-mesenchymal transition of cervical cancer cells and its mechanism

  • 摘要: 目的:探讨三结构域蛋白14(TRIM14)对宫颈癌细胞增殖、迁移、侵袭及上皮—间充质转化(EMT)的影响及相关作用机制。方法:收集40例宫颈癌患者的宫颈癌组织及癌旁正常宫颈组织标本,采用实时荧光定量PCR(RT-qPCR)法检测TRIM14基因表达。体外培养宫颈癌HeLa 细胞,将TRIM14 小干扰RNA(si-TRIM14)转染至HeLa 细胞。采用CCK-8 法检测细胞增殖,划痕实验检测细胞迁移,Transwell 小室法检测细胞侵袭,Western blotting 法检测EMT 相关蛋白和单磷酸腺苷蛋白激酶(AMPK)/雷帕霉素靶蛋白(mTOR)信号通路相关蛋白表达。结果:宫颈癌组织中TRIM14 mRNA表达水平显著高于癌旁正常宫颈组织(P<0.05)。与si-NC组比较,si-TRIM14组细胞增殖活性、细胞迁移率、侵袭细胞数目均降低,E-cadherin蛋白表达量升高,N-cadherin、Vimentin、Snail1 蛋白表达量均降低(P<0.05)。si-TRIM14 组细胞中p-AMPK/AMPK 比值高于si-NC组,pmTOR/mTOR 比值低于si-NC 组(P<0.05)。结论:TRIM14 在宫颈癌组织中高表达,干扰TRIM14 表达可通过调控AMPK/mTOR信号通路抑制EMT,进而抑制宫颈癌细胞增殖、迁移和侵袭。

     

    Abstract: Objective: To investigate the effect of tripartite motif-containing protein 14 (TRIM14) on proliferation, migration, invasion and epithelial-to-mesenchymal transition (EMT) of cervical cancer cells and its related mechanism.Methods: Cervical cancer tissue and adjacent normal cervical tissue samples of 40 patients with cervical cancer were collected and the expression of TRIM14 was detected by real-time fluorescence quantitative polymerase chain reaction (RT-qPCR).Cervical cancer HeLa cells were cultured in vitro and small interfering RNA (si-TRIM14) was transfected into HeLa cells.Cell proliferation was detected by cell counting kit (CCK-8), cell migration was detected by scratch test, cell invasion was detected by transwell chamber assay, and the expressions of EMT related protein and proteins associated with adenosine monophosphate protein kinase (AMPK) /rapamycin target protein (mTOR) signaling pathway were detected by western blotting.Results: The expression of TRIM14 mRNA in cervical cancer tissues was significantly higher than that in adjacent normal cervical tissues (P< 0.05).Compared with si-NC group, cell proliferation activity, cell mobility and the number of invasive cells in si-TRIM14 group decreased, the expression of E-cadherin protein increased, and the expressions of N-cadherin, vimentin and Snail1 protein decreased (P< 0.05).The P-AMPK/AMPK ratio in si-TRIM14 group was higher than that in si-NC group, and the P-MTOR/mTOR ratio was lower than that in si-NC group (P< 0.05).Conclusion: TRIM14 is highly expressed in cervical cancer tissues, and interfering with the expression of TRIM14 can inhibit EMT by regulating AMPK/mTOR signaling pathway, thus inhibiting the proliferation, migration and invasion of cervical cancer cells.

     

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