Abstract
Breast Cancer (BC) is a female malignancy with a high mortality rate. Novel diagnostic and prognostic biomarkers are valuable for reducing BC mortality. Our study is designed to undrape the precise role of the LINC00466/miR-4731-5p/EPHA2 axis in BC. <P> </P> Methods: The Cancer Genome Atlas (TCGA) sequencing dataset was utilized to compare the levels of LINC00466. The levels of LINC00466, miR-4731-5p, and EPHA2 were tested by qRTPCR. Cell proliferation and cycle were detected by CCK-8 assay and flow cytometer. In vivo role of LINC00466 was tested by Xenograft nude models. Binding sites were predicted by TargetScan and Starbase. The binding relationship was employed by Dual-luciferase reporter gene assay and RNA pull-down assay. <P> </P> Results: LINC00466 was increased in human breast cancer tissues. LINC00466 was negatively associated with miR-4731-5p and positively correlated with EPHA2 in human breast cancer tissues. Down-regulation of LINC00466 suppressed the proliferation and arrested the cell cycle of breast cancer cells, and inhibited tumor growth in vivo. <P> </P> Conclusion: LINC00466 promoted BC development via mediating the miR-4731-5p/EPHA2 axis, which has the potential value as a promising therapeutic target in BC.
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