1.MiR-125b-5 suppresses ovarian cancer cell migration and invasion by targeted downregulation of CD147.
Zhen HUANG ; Hao Ming SHEN ; Hong Yu DENG ; Li Sha SUN ; Bin QÜ
Journal of Southern Medical University 2022;42(9):1389-1396
OBJECTIVE:
To investigate whether miR-125b-5p regulates biological behaviors of ovarian cancer cells by targeted regulation of CD147 expression.
METHODS:
RT-qPCR was used to detect the expression of miR-125b-5p and CD147 mRNA in ovarian cancer tissues and cancer cell lines. SKOV3 cells transfected with miR-125b-5p mimic and HO8910 cells transfected with miR-125b-5p inhibitor were examined for changes in proliferation, migration and invasion using CCK-8 assay, colonyforming assay and Transwell assay. Starbase was used to predict the potential binding sites between miR-125b-5p and CD147, and double luciferase reporter gene assay was used to verify the targeting relationship. In SKOV3 cells, the effects of cotransfection with miR-125b-5p mimic and pcDNA3.1-CD147 (or pcDNA3.1) plasmid on cell proliferation, migration and invasion were assessed with CCK-8 assay and Transwell assay.
RESULTS:
The expression of miR-125b-5p was significantly lowered and that of CD147 was increased in both ovarian cancer tissues and ovarian cancer cell lines (P < 0.05). Overexpression of miR-125b-5p in SKOV3 cells resulted in significantly suppressed cell proliferation, migration and invasion, while downregulation of miR-125b-5p in HO8910 cells promoted cell proliferation, migration and invasion. Bioinformatic analysis predicted that miR-125b-5p binds to CD147, which was confirmed by luciferase reporter gene assay. RT-qPCR and Western blotting showed that miR-125b-5p negatively regulated CD147 expression (P < 0.05). In SKOV3 cells, the inhibitory effects of miR-125b-5p mimic on cell proliferation, invasion and migration were significantly attenuated by co-transfection of the cells with pcDNA3.1-CD147 plasmid.
CONCLUSION
miR-125b-5p inhibits the migration and invasion of ovarian cancer cells by negatively regulating the expression of CD147.
Basigin
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Carcinoma, Ovarian Epithelial
;
Cell Line, Tumor
;
Cell Movement/genetics*
;
Cell Proliferation/genetics*
;
Down-Regulation
;
Female
;
Gene Expression Regulation, Neoplastic
;
Humans
;
MicroRNAs/metabolism*
;
Neoplasm Invasiveness/genetics*
;
Ovarian Neoplasms/genetics*
;
RNA, Messenger/genetics*
;
Sincalide/metabolism*