miRNA‑373 promotes urinary bladder cancer cell proliferation, migration and invasion through upregulating epidermal growth factor receptor

Wang,Yibing; Xu,Zhenqun; Wang,Xia

doi:10.3892/etm.2018.7061

miRNA‑373 promotes urinary bladder cancer cell proliferation, migration and invasion through upregulating epidermal growth factor receptor

Authors:
- Yibing Wang
- Zhenqun Xu
- Xia Wang
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Affiliations: Department of Urology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
Published online on: December 6, 2018 https://doi.org/10.3892/etm.2018.7061
Pages: 1190-1195
Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

MicroRNA (miRNA)-373 has been demonstrated to be involved in several types of cancer, whereas its involvement in urinary bladder cancer and the mechanism of its function remains poorly understood. The present study aimed to investigate the functionality of miRNA‑373 in urinary bladder cancer. Tumor tissues and adjacent healthy tissues were collected from patients with urinary bladder cancer (n=55), and blood samples were collected from patients with urinary bladder cancer and healthy controls (n=45). The expression of miRNA‑373 in these tissues was detected by reverse transcription quantitative polymerase chain reaction. The diagnostic value of serum miRNA‑373 for urinary bladder cancer was investigated by receiver operating characteristic curve analysis and survival curve analysis, respectively. miRNA‑373 mimics were transfected into urinary bladder cancer cells, and the effects on cancer cell proliferation, migration and invasion, and on epidermal growth factor receptor (EGFR) expression was assessed by Cell Counting kit‑8 assay, Transwell migration and invasion assays, and western blot analysis. It was identified that the miRNA‑373 expression level was increased in tumor tissues compared with adjacent healthy tissues. The serum level of miRNA‑373 was increased in patients with cancer compared with the healthy controls. Serum miRNA‑373 may be used to accurately predict urinary bladder cancer. miRNA‑373 overexpression promoted tumor cell proliferation, migration and invasion, and resulted in upregulated EGFR expression in urinary bladder cancer cells. It was concluded that miRNA‑373 overexpression may promote urinary bladder cancer cell proliferation, migration and invasion by upregulating EGFR.

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