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  • Title: MicroRNA-760 inhibits the biological progression of colorectal carcinoma by directly targeting FOXA1 and regulating epithelial-to-mesenchymal transition and PI3K/AKT signaling pathway.
    Author: Cong K, Li CG, Wei YH, Zhang K, Xu HB.
    Journal: Eur Rev Med Pharmacol Sci; 2019 Jul; 23(13):5730-5740. PubMed ID: 31298352.
    Abstract:
    OBJECTIVE: Colorectal carcinoma (CRC) is one of the most common factors for tumor-associated mortalities globally. In recent years, microRNAs (miRNAs) have been identified as novel therapeutic biomarkers for cancer treatment. The purpose of the current study was to unravel the clinical significance and underlying molecular mechanisms of miR-760 in CRC progression. PATIENTS AND METHODS: Fifty-four pairs of CRC tissue samples and adjacent para-carcinoma tissue samples were collected from CRC patients who underwent surgical resection. We measured miR-760 expressions in CRC using quantitative Real-time polymerase chain reaction (qRT-PCR) analysis. MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assays and transwell assays were performed to determine the functions of miR-760 in CRC cell proliferation, invasion and migration. Dual-luciferase reporter assays and Western blots were used to investigate the underlying molecular mechanisms. Moreover, the association between miR-760 expressions and clinicopathological features was analyzed. RESULTS: In this study, the results showed that the down-regulated miR-760 expressions were related to the poor prognosis and malignant clinicopathologic features of CRC patients. Furthermore, functional assays revealed that miR-760 restoration obviously suppressed CRC cell proliferation, migration and invasion through modulating phosphatidylinositol 3-kinase/ protein kinase B (PI3K/AKT) pathway and epithelial-mesenchymal transition (EMT). FOXA1 was also considered as a functional target of miR-760 in CRC cells. Furthermore, miR-760 up-regulation also significantly repressed tumorigenesis in vivo. CONCLUSIONS: These results suggested that miR-760 exerted cancer-suppressive functions in CRC, providing a therapeutic strategy for CRC treatment.
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