Mir-615-5p inhibits cervical cancer progression by targeting TMIGD2

BackgroundCervical cancer (CC) is a prevalent gynecological malignancy, contributing to a substantial number of fatalities among women. MicroRNAs (miRNAs) have emerged as promising biomarkers with significant potential for the early detection and prognosis of CC.ObjectiveThis study aimed to explore the clinical significance and biological role of miR-615-5p in CC, with the goal of identifying novel biomarkers for this disease.Materials and methodsThe levels of miR-615-5p and TMIGD2 mRNA in tissue samples and cells were quantified through quantitative reverse transcription real-time PCR, followed by statistical analyses to investigate the correlation between miR-615-5p and clinical data. The effects of miR-615-5p on the proliferation and metastasis of CC cells were evaluated using the Cell Counting Kit-8 and Transwell assays. The potential mechanism of miR-615-5p was elucidated by bioinformatics analyses and Dual-luciferase reporter assay. Western blotting was employed to measure the protein levels of TMIGD2.ResultsIn CC, the downregulation of miR-615-5p was related to poor prognosis and emerged as an independent prognostic factor. The levels of miR-615-5p were reduced in CC cells. miR-615-5p overexpression restrained the proliferation and metastasis of CC cells. Furthermore, TMIGD2 was identified as a target gene regulated by miR-615-5p, and its expression was notably elevated in CC. The influence of miR-615-5p on the biological behaviors of CC cells was mediated through the modulation of TMIGD2.ConclusionsDownregulation of miR-615-5p was a prognostic indicator of poor prognosis in CC. miR-615-5p exerted its tumor-suppressive effects by inhibiting cell growth and metastasis through the regulation of TMIGD2.