LncRNA DLGAP1-AS2 Suppresses the Maturation of miR-16 to Suppress Cell Invasion and Migration of Ovarian Cancer Cells

Background: This study aimed to explore the role of lncRNA DLGAP1-AS2 in ovarian cancer (OC). Methods: Expression of DLGAP1-AS2, mature miR-16 and miR-16 precursor in paired OC tissues and non-tumor tissues collected from 62 OC patients was determined by RT-qPCR. Correlations were analyzed by Pearson’s correlation coefficient. Overexpression of DLGAP1-AS2 was achieved in OC cell line UWB1.289 to explore the effects of DLGAP1-AS2 overexpression on the expression of mature miR-16 and miR-16 precursor by RT-qPCR. Transwell assays were performed to analyze the role of DLGAP1-AS2 and miR-16 in regulating the invasion and migration of UWB1.289 cells.Results: DLGAP1-AS2 was upregulated in OC and inversely correlated with mature miR-16, but not miR-16 precursor. In OC cells, DLGAP1-AS2 overexpression resulted in downregulated mature miR-16, but failed to significantly affect the expression of miR-16 precursor. Cell invasion and migration analysis showed that DLGAP1-AS2 overexpression reduced the inhibitory effects of miR-16 overexpression on cell invasion and migration.Conclusions: DLGAP1-AS2 may suppress the maturation of miR-16 to suppress cell invasion and migration of OC cells.