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  • Title: MiR-769 promoted cell proliferation in human melanoma by suppressing GSK3B expression.
    Author: Qiu HJ, Lu XH, Yang SS, Weng CY, Zhang EK, Chen FC.
    Journal: Biomed Pharmacother; 2016 Aug; 82():117-23. PubMed ID: 27470346.
    Abstract:
    MicroRNAs (miRNAs) are short, non-coding RNAs with post-transcriptional regulatory function, playing crucial roles in cancer development and progression of human melanoma. Previous studies have indicated that miR-769 was implicated in diverse biological processes. However, the underlying mechanism of miR-769 in human melanoma has not been intensively investigated. In this present study, we aimed to investigate the role of miR-769 and its target genes in human melanoma. We found that miR-769 expression was strongly increased in human melanoma cells and clinical tissues compared with their corresponding controls. Overexpression of miR-769 promoted cell proliferation in human melanoma cell line A375, whereas miR-769-in reverses the function. Glycogen synthase kinase-3 Beta (GSK3B), a potential target gene of miR-769, and was validated by luciferase assay. Further studies revealed that miR-769 regulated cell proliferation of human melanoma by directly suppressing GSK3B expression and the knockdown of GSK3B expression reversed the effect of miR-769-in on human melanoma cell proliferation. In summary, our data demonstrated that miR-769 might act as a tumor promoter by targeting GSK3B during development of human melanoma.
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