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- W3149131424 abstract "Objective:To study the mechanism of effect of miR-21 via Wnt/ β-catenin signaling pathway in human A549 lung cancer cells and Lewis lung carcinoma in mice.Methods:The effect of miR-21 on A549 cells were detected by MTT method.MiR-21 expression levels were overexpressed or inhibited in A549 cells by transfecting with miR-21 mimics or inhibitors.Correlation among key molecules(Wnt1,β-catenin.CyclinD1 and miR-21) of mRNA and protein levels in Wnt/β-catenin signaling pathway were studied by Real-time PCR and Western blot hybridization assay.Invasive ability of A549 cells was determined via Transwell chamber cell invasion assay;the role of miR-21 in A549 cells was explored via the Wnt/β-catenin signaling pathway.A Lewis lung carcinoma animal model was established to detect miR-21 expressions in tumor animals and controlled animal tissues,and verify expression changes of the above moleculesin the Wnt / β-catenin signaling pathway was determined in the animal level.Results:MTT assay results showed that miR-21 overexpression could markedly enhance cell absorbance value;that is,miR-21 could increase the ability proliferation of A549 cells.β-catenin and CyclinD1 expression levels were significantly higher in miR-21 mimic transfected cells(P<0.05),and Wnt 1 gene had no significant change.Wnt 1,β-catenin and CyclinD1 gene expression showed no significant change when miR-21 expression was suppressed,compared with controls.After cells were transfected with miR-21 mimics,cell invasion assay revealed that the perforated cells was significantly higher than the perforated cells in the control group(P<0.01).Lewis lung assay revealed that miR-21 expression levels in the Lewis lung carcinoma were significantly higher;and at the same time.Wnt1,β-catenin and CyclinD1 gene expression levels were significantly increased,compared to controls.Conclusions:In A549 human lung cancer cells and Lewis lung carcinoma in mice,key molecules β-catenin and CyclinD1 of miR-21 expressions and the Wnt/ β-catenin signaling pathway are pos" @default.
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- W3149131424 date "2015-01-01" @default.
- W3149131424 modified "2023-09-23" @default.
- W3149131424 title "Mechanism of miR-21 via Wnt/β-catenin signaling pathway in human A549 lung cancer cells and Lewis lung carcinoma in mice" @default.
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