PRR11在膀胱癌组织中的表达及其对膀胱癌T24细胞增殖和凋亡的影响

目的 探讨富含脯氨酸蛋白11(PRR11)在膀胱癌组织中的表达及其基因沉默对膀胱癌T24细胞增殖和凋亡的影响.方法 采用免疫组织化学法检测57例膀胱尿路上皮癌组织及其癌旁组织中PRR11蛋白的表达,并分析PRR11蛋白表达水平与患者临床病理特征的关系.qRT-PCR和Western blot检测人永生化膀胱上皮细胞株S...

Expression of PRR11 in Bladder Cancer Tissue and Its Effect on Proliferation andApoptosis of Bladder Cancer Cell Line T24

Objective To investigate the expression of PRR11 in bladder cancer tissues and its effect on proliferation and apoptosis of bladder cancer cell line T24. Methods The expression of PRR11 was detected using immunohistochemistry method in 57 specimens of bladder urothelial carcinoma and adjacent tissues. The correlations of PRR11 expression with the clinicopathological characteristics of patients with bladder urothelial carcinoma were analyzed. The mRNA and protein expression levels of PRR11 in human immortalized bladder epithelial cell lines SV-HUC-1 and human bladder cancer cell lines HTB-9, T24, J82 and UM-UC-3 were measured by qRT-PCR and Western blot. The gene expression of PRR11 in T24 cells was silenced by lentivirus shRNA. The mRNA expression level of PRR11 was detected by qRT-PCR. CCK-8 was used to detect cell proliferative activity. Cell clonality was detected by plate cloning assays. The rate of apoptosis was evaluated using flow cytometry. The protein expression levels of PRR11, Caspase-3, Bcl-2 and Bax were assessed by Western blot. Results PRR11 was highly expressed in bladder urothelial carcinoma, and its expression level was correlated with the pathological grade and T stage of the tumor. The mRNA and protein expression levels of PRR11 in HTB-9, T24, J82 and UM-UC-3 cells were higher than those in SVHUC-1 cells (P<0.05), especially in T24 cells. PRR11 gene silence reduced the expression levels of PRR11 mRNA and protein, as well as the cell proliferation activity and cell clonality, elevated the apoptosis rate, up-regulated the protein expression levels of Cleaved caspase-3 and Bax, and down-regulated the protein expression level of Bcl-2. Conclusion The expression of PRR11 is upregulated in bladder urothelial carcinoma tissues and bladder cancer cell lines. Interfering with PRR11 expression can inhibit the proliferation and promote the apoptosis of bladder cancer T24 cells.