MiR-203 Suppresses Bladder Cancer Cell Growth and Targets Twist1

Overview

Journal Oncol Res

Specialty Oncology

Date 2017 Sep 13

PMID 28893347

Citations 28

Authors

Jie Shen

Jianhua Zhang

MinHui Xiao

Junfeng Yang

Ningnan Zhang

Affiliations

Soon will be listed here.

Abstract

miR-203 is an epigenetically silenced tumor-suppressive microRNA in tumors. This study was designed to investigate the effects of miR-203 on the proliferation, migration, invasion, and apoptosis of bladder cancer (BCa) cells. The expression levels of miR-203 in BCa tissues, normal adjacent tissues, and BCa cell lines were detected. BCa cells were transfected with miR-203 mimic and inhibitor to investigate the effect of miR-203 on cell functions and the epithelial-mesenchymal transition (EMT). Cotransfection with miR-203 inhibitor and shRNA of the predicted target gene Twist1 (si-Twist1) was performed to investigate the target relationship of miR-203 and Twist1. The effects of knockdown of Twist1 on cell functions were also investigated. The expression of miR-203 was significantly reduced in BCa tissues and cells, in comparison with the control. miR-203 mimic significantly reduced cell viability, invasion, migration, and EMT, and enhanced cell apoptosis. On the contrary, miR-203 inhibitor showed the opposite results. However, the administration of si-Twist1 cancelled the effect of miR-203 inhibitor on cell proliferation, apoptosis, invasion, and migration. These demonstrated that miR-203 may function as a tumor-suppressive microRNA in BCa by negatively targeting Twist1. Both Twist1 and miR-203 might be explored as potential targets for studying the mechanism related to BCa pathogenesis and therapy.

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