Abstract
The microRNA (miRNA) miR-576-5p was reported to facilitate tumor progression, but its underlying regulatory impacts on colon adenocarcinoma remain unknown. This work therefore attempted to examine the biological effects of miR-576-5p in colon adenocarcinoma. The Cancer Genome Atlas (TCGA) database was introduced to analyze miR-576-5p and NEGR1 messenger RNA (mRNA) expression levels between normal and cancer tissues. miR-576-5p and NEGR1 expression levels in colon adenocarcinoma cells and colon cells were evaluated with quantitative reverse transcription polymerase chain reaction (qRT-PCR). NEGR1 protein expression was examined by Western blot. Furthermore, colon adenocarcinoma cell behaviors were evaluated via CCK-8, wound-healing, Transwell, and hanging drop experiments. The interaction between miR-576-5p and NEGRI was verified by dual-luciferase assay. miR-576-5p was upregulated in colon adenocarcinoma, and miR-576-5p overexpression notably facilitated the proliferative, migratory, invasive abilities of colon adenocarcinoma cells. NEGR1 was newly identified as one target of miR-576-5p, and, miR-576-5p/NEGR1 axis was subsequently verified to modulate cell proliferative, migratory, invasive, and aggregate abilities. miR-576-5p facilitated aggressive progression of colon adenocarcinoma cells by targeting NEGR1, which could be an underlying therapeutic target for colon adenocarcinoma.
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