MicroRNA-93 Promotes Epithelial–Mesenchymal Transition of Endometrial Carcinoma Cells

PLoS One

Yang Zhao¹  Yin-Ling Xiu¹  Xiu-Bo Sang¹  Miao-Xiao Feng¹  Xi Chen¹  Bo-Liang Liu¹  Kai-Xuan Sun¹  Shuo Chen¹ 

[1] Department of Gynecology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China

关键词: Endometrial carcinoma;    Transfection;    Cancer cell migration;    Metastasis;    Uterine cancer;    MicroRNAs;    Reverse transcriptase-polymerase chain reaction;    Small interfering RNAs;   

DOI  :  10.1371/journal.pone.0165776

学科分类：医学（综合）

来源: Public Library of Science

【 摘 要 】

MicroRNA-93, derived from a paralog (miR-106b-25) of the miR-17-92 cluster, is involved in the tumorigenesis and progression of many cancers such as breast, colorectal, hepatocellular, lung, ovarian, and pancreatic cancer. However, the role of miR-93 in endometrial carcinoma and the potential molecular mechanisms involved remain unknown. Our results showed that miR-93 was overexpressed in endometrial carcinoma tissues than normal endometrial tissues. The endometrial carcinoma cell lines HEC-1B and Ishikawa were transfected with miR-93-5P, after which cell migration and invasion ability and the expression of relevant molecules were detected. MiR-93 overexpression promoted cell migration and invasion, and downregulated E-cadherin expression while increasing N-cadherin expression. Dual-luciferase reporter assay showed that miR-93 may directly bind to the 3′ untranslated region of forkhead box A1 (FOXA1); furthermore, miR-93 overexpression downregulated FOXA1 expression while miR-93 inhibitor transfection upregulated FOXA1 expression at both mRNA and protein level. In addition, transfection with the most effective FOXA1 small interfering RNA promoted both endometrial cancer cell migration and invasion, and downregulated E-cadherin expression while upregulating N-cadherin expression. Therefore, we suggest that miR-93 may promote the process of epithelial–mesenchymal transition in endometrial carcinoma cells by targeting FOXA1.

【 授权许可】

CC BY