Abstract
Previous studies have suggested that EZH2 is up-regulated in bladder cancer tissues and identified it as a biomarker for poor prognosis. However, the biological functions of EZH2 in bladder cancer cells remain unknown. In this research, we discovered that EZH2 expression is irrelevant to the TNM stage and poor prognosis of bladder cancer patients. But suppression of EZH2 can slowdown the progression of bladder cancer cells. Moreover, we used the technology of synthetic biology to construct the tetracycline-controllable artificial microRNA-HOTAIR + EZH2, which can decrease the expression of HOTAIR and EZH2 in a doxycycline dosage-dependent manner. And we also found that HOTAIR expression was positively correlated with EZH2 expression. Tetracycline-controllable artificial microRNA-HOTAIR + EZH2 can inhibit the proliferation and migration of bladder cancer cells. Meanwhile, the apoptosis rate of bladder cancer cells was increased. Taken together, our research showed the cancer-promoting effects of EZH2 and created a novel method to rescue the development of bladder cancer cells.
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