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Solute carrier family 12 member 5 promotes tumor invasion/metastasis of bladder urothelial carcinoma by enhancing NF-kappa B/MMP-7 signaling pathway

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机构： [1]Department of Urology, The Third Xiangya Hospital of Central South University, Changsha 410013, China [2]Institute of Prostate Disease of Central South University, Changsha 410013, China [3]Center for Molecular Medicine, Xiangya Hospital, Central South University, Changsha 410008, China [4]Department of Onology, The Third Xiangya Hospital of Central South University, Changsha 410013, China [5]Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou 510060, China [6]State Key Laboratory of Oncology in South China, Guangzhou 510060, China [7]Department of Radiotherapy, The First Affiliated Hospital of Ahhui Medical University, Anhui 230022, China [8]Department of Pathology, The Third Xiangya Hospital of Central South University, Changsha 410013, China [9]Department of Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou 510630, China [10]Department of Urology, Sun Yat-sen University Cancer Center, Guangdong 510060, China and [11]Department of Urology, Hunan Cancer Hospital, Changsha 410013, China

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Solute carrier family 12 member 5 (SLC12A5), an integral membrane KCl cotransporter, which maintains chloride homeostasis in neurons, is aberrantly expressed and involved in the tumorigenesis of certain cancers. However, the clinical significance and biological role of SLC12A5 in human bladder urothelial carcinoma (BUC) remains unclear. In this study, the expression of SLC12A5 was examined in clinical specimens of primary BUC and in BUC cell lines using quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR), western blot and immunohistochemistry (IHC). The prognostic value of SLC12A5 expression and its correlation with the clinicopathological features of patients with BUC were analyzed statistically. A series of in vitro and in vivo assays were performed to elucidate the effect of SLC12A5 in BUC and its underlying mechanisms. The present results showed that SLC12A5 expression was significantly increased in BUC tissues. SLC12A5 expression significantly correlated with the tumor node metastasis (TNM) stage. Kaplan-Meier survival curves showed that high SLC12A5 expression was associated with poor survival in patients with BUC. Multivariate analysis indicated that SLC12A5 expression was an independent prognostic marker for the survival of patients. Downregulation of SLC12A5 inhibited the migratory and invasive abilities of BUC cells in vitro, and knocking down SLC12A5 diminished BUC metastasis in vivo. Moreover, we identified that SLC12A5 promoted the migration and invasion of BUC by enhancing MMP-7 expression via NF-kappa B-dependent transcription. Taken together, our findings indicated that SLC12A5 might function as a tumor metastasis promoting factor in the development and progression of BUC by regulating the NF-kappa B/MMP-7 signaling pathway. Thus, SLC12A5 might be a prognostic marker as well as a therapeutic target for BUC.

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出版当年[2017]版：

大类 | 2 区生物

小类 | 3 区细胞生物学

最新[2023]版：

大类 | 1 区

生物学

小类 | 2 区细胞生物学

第一作者：

第一作者机构： [1]Department of Urology, The Third Xiangya Hospital of Central South University, Changsha 410013, China [2]Institute of Prostate Disease of Central South University, Changsha 410013, China

通讯作者：

通讯机构： [1]Department of Urology, The Third Xiangya Hospital of Central South University, Changsha 410013, China [2]Institute of Prostate Disease of Central South University, Changsha 410013, China [*1]Department of Urology, The Third Xiangya Hospital of Central South University, No.138, Tongzipo Road, Changsha 410013, China.

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