[No authors listed]
AIMS:The functions and molecular mechanisms of miR-340-3p in lung adenocarcinoma (LUAD) progression remain unclear. On the other hand, the role of HUS1 in LUAD progression should be further explored. MAIN METHODS:Data from cancer database were subjected to bioinformatics analysis. Quantitative real-time PCR and western blot were performed to detect gene expression. Colony formation and MTT assay were performed to examine cell growth in vitro. Wound healing assays and transwell assays were performed to examine cell migration. KEY FINDINGS:Here, our results showed that miR-340-3p was lower expressed in LUAD tissues and LUAD-derived cell lines. And miR-340-3p suppressed the proliferation and migration ability of LUAD cells. Further, miR-340-3p inhibits HUS1 expression, which was higher expressed in LUAD tissues and promoted the proliferation and migration ability of LUAD cells. Moreover, higher HUS1 expression was associated with poor survival rate and shorter survival time in patients with LUAD, and HUS1 expression was negative correlated with that of miR-340-3p in clinical samples. In addition, overexpression of HUS1 counteracted the downregulation of cell growth by miR-340-3p. SIGNIFICANCE:The study mainly indicated that miR-340-3p may play a tumor suppressor role in the progression of LUAD, with the function of restraining HUS1 expression, highlighting a potential therapeutic target for LUAD.
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