MiR-1258 promotes the apoptosis of cervical cancer cells by regulating the E2F1/P53 signaling pathway.

OBJECTIVE:Cervical cancer is the most common malignant tumor in gynaecology with high mortality. MiRNA has been reported to regulate cell biological processes in cervical cancer. This study aimed to explore the expression of miR-1258 and role of miR-1258 by targeting E2F1 in cervical cancer cells. METHODS:The expression of miR-1258 and E2F1 in cervical cancer cells and transfection effects was determined by RT-qPCR analysis. The expression of E2F1, MMP2, MMP7, MMP9, Bcl2, Bax, cleaved caspase3, caspase3, KI67, p-AKT, cyclinD1, CDK2, P53 and AKT in cervical cancer cells was detected by western blot analysis. The proliferation, invasion, migration and apoptosis were respectively analyzed by CCK-8 assay, transwell assay, wound healing assay and flow cytometry analysis. E2F1 was a potential target of miR-1258, which demonstrated by a dual-luciferase reporter assay. RESULTS:miR-1258 expression was decreased while E2F1 expression was increased in cervical cancer cells. MiR-1258 overexpression could down-regulate the E2F1 expression. Overexpression of miR-1258 inhibited the proliferation, invasion and migration and promoted the apoptosis of cervical cancer cells by AKT and P53 signal pathway. And, Overexpression of miR-1258 also suppressed the tumor growth by AKT and P53 signal pathway. Overexpression of E2F1 reduced the inhibition effects of miR-1258 in cervical cancer. CONCLUSION:Taken together, miR-1258 overexpression exerts its inhibition effects on the proliferation, invasion and migration and promotion effects on the apoptosis of cervical cancer cells by targeting the E2F1, which might provide new ideas for clinical treatment of cervical cancer.

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