Zhang Xueli, Wang Liang, Zhang Haitao, Tu Fang, Qiang Yong, Nie Cuifang
Department of General Surgery, Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China.
Department of General Surgery, The Third People's Hospital of Liaocheng, Liaocheng, Shandong 252000, P.R. China.
Oncol Lett. 2019 Feb;17(2):1859-1864. doi: 10.3892/ol.2018.9765. Epub 2018 Nov 27.
Certain types of cancer exhibit downregulated expression of zonula occludens-1 (ZO-1), which serves an important function in tumor progression; however, the underlying molecular mechanisms that lead to this downregulation in cancer remain unclear. In the present study, the expression of ZO-1 in liver cancer (LC) tissues was investigated. Western blot and reverse transcription-quantitative polymerase chain reaction assays were used to detect the expression of ZO-1 protein and mRNA in LC tissues and paired adjacent non-tumorous tissues. The results indicated that, compared with non-tumorous tissues, the expression of ZO-1 was significantly downregulated at the protein (P<0.001) and mRNA (P=0.006) levels in LC tissue samples. In addition, various cellular and molecular methods were applied, including MTT, colony formation, flow cytometry and Transwell assays. The results indicated that overexpression of ZO-1 inhibited cell viability, proliferation and migration, and induced G/G phase arrest .
某些类型的癌症表现出闭合蛋白-1(ZO-1)表达下调,其在肿瘤进展中起重要作用;然而,导致癌症中这种下调的潜在分子机制仍不清楚。在本研究中,研究了ZO-1在肝癌(LC)组织中的表达。采用蛋白质印迹法和逆转录-定量聚合酶链反应检测LC组织和配对的相邻非肿瘤组织中ZO-1蛋白和mRNA的表达。结果表明,与非肿瘤组织相比,LC组织样本中ZO-1的蛋白表达(P<0.001)和mRNA表达(P=0.006)均显著下调。此外,还应用了各种细胞和分子方法,包括MTT法、集落形成实验、流式细胞术和Transwell实验。结果表明,ZO-1的过表达抑制了细胞活力、增殖和迁移,并诱导了G/G期阻滞。