Abstract
<div>Abstract<p>Endometrial cancer is the most common gynecologic malignancy, whose incidence rate is on the rise. However, the underlying mechanisms of endometrial cancer are not very clear yet. miRNAs have been considered to be playing important roles in malignant behavior. Here, miR-652 was significantly upregulated in endometrial cancer, which correlated with shorter overall survival and earlier recurrence. Moreover, overexpression of miR-652 in endometrial cancer cells promoted proliferation, migration, and invasion <i>in vitro</i> and facilitated tumor growth and metastasis <i>in vivo</i>. In contrast, downregulation of miR-652 in endometrial cancer cells inhibited these processes both <i>in vitro</i> and <i>in vivo</i>. Mechanistically, miR-652 promotes proliferation and metastasis through directly targeting <i>RORA</i>. Both mRNA and protein level of RORA were negatively related with miR-652 and overexpression of RORA can rescue the promotion effect of miR-652. Further experiments indicated miR-652 overexpression can activate the Wnt/β-catenin pathway and RORA can downregulate β-catenin and function as a tumor suppressor in endometrial cancer. Collectively, these findings demonstrate that miR-652 functions as an oncomir in endometrial cancer.</p>Implications:<p>This study suggests that the miR-652 is a critical regulator of proliferation and metastasis in endometrial cancer and may serve as a therapeutic target.</p></div>
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