Abstract
PurposePrevious studies have reported that miR-30d-5p gene expression can inhibit tumor proliferation, but its mechanism has not been fully elucidated. MethodsBased on previous findings, TGF-β1 was used to induce epithelial mesenchymal transformation in A549 cells. The expression levels of DUSP-1, E-cadherin and Vimentin were detected by Western blot. mRNA expression levels of DUSP-1, E-cadherin and Vimentin were determined by RT-qPCR. The expression level of miR-30d-5p was determined by RT-qPCR. ResultsThe induction effect of TGF-β1 could be reversed by the intervention of miR-30d-5p in A549 cells. miRNA inhibition experiment showed that miR-30d-5p inhibitor could effectively inhibit the expression of miR-30d-5p in A549 cells. After miR-30d-5p intervention, TGF-β1 was reversed on EMT-related genes (Dusp-1, E-cadherin, Vimentin). ConclusionTGF-β1 can induce epithelial mesenchymal transformation of A549 cells, and miR-30d-5p may be a key regulatory mechanism in regulating gene and protein expression of TGF-β1-mediated DUSP-1, E-cadherin and Vimentin. This provides a new perspective for understanding the anti-tumor effect of miR-30d-5p gene.
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