Zhou Z, Xu YP, Wang LJ, Kong Y. miR-940 potentially promotes proliferation and metastasis of endometrial carcinoma through regulation of
MRVI1.
Biosci Rep 2019;
39:BSR20190077. [PMID:
31085718 DOI:
10.1042/BSR20190077]
[Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/28/2019] [Accepted: 05/07/2019] [Indexed: 12/21/2022] Open
Abstract
The specific functions and clinical significance of miR-940 in endometrial
carcinoma (EC) have not been studied. First, we assessed the expression of
miR-940 and MRVI1 in EC tissues collected from The Cancer Genome Atlas (TCGA)
database and EC cell lines. miR-940 was significantly overexpressed in EC
tissues and cell lines, particularly in RL95-2 cells. Correlation analysis
showed that miR-940 expression level was remarkably associated with age, grade,
and death. Moreover, the overall survival (OS) rate in the miR-940 low
expression group was higher, compared with miR-940 high expression group.
Univariate and multivariate models demonstrated that miR-940 expression, stage,
and age were predictive indicators of OS. Moreover, there was no significance of
the proliferation ability among the three EC cell lines (RL95-2, ISK, and KLE).
To reveal the biological roles of miR-940, we respectively transfected RL95-2
cells with miR-940 mimics, miR-940 inhibitors, and control to further
investigate the cell proliferation ability, and migration as well as invasion
potential of RL95-2 cells. The transfection of miR-940 mimics significantly
increased the proliferation and migration/invasion ability of RL95-2
cells. MRVI1 was predicted to be a potential target of miR-940 by means of
in silico analysis followed by validation using luciferase
reporter assays. MRVI1 was correlated with good prognosis. Moreover, forced
expression of MRVI1 in miR-940 mimic transfected cells abolished the
facilitation of miR-940 on cell proliferation, migration, and invasion of RL95-2
and KLE cells. In conclusion, our study demonstrates that miR-940 might function
as a reliable diagnostic and prognostic signature in EC.
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