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  • Title: LINC00668 promotes tumorigenesis and progression through sponging miR-188-5p and regulating USP47 in colorectal cancer.
    Author: Yan S, Yue Y, Wang J, Li W, Sun M, Gu C, Zeng L.
    Journal: Eur J Pharmacol; 2019 Sep 05; 858():172464. PubMed ID: 31233752.
    Abstract:
    Long intergenic non-coding RNA No.668 (LINC00668) is implicated in the development of various malignancies. However, the role of LINC00668 and underlying mechanism in colorectal cancer (CRC) remains totally unknown. The expression pattern of LINC00668 in CRC cells were determined by qRT-PCR. CCK-8, EdU incorporation, flow cytometry, Transwell, and wound-healing assays were run to evaluate the functions of LINC00668 in CRC cells. Bioinformatics analyses were used to identify the LINC00668-specific binding with miRNAs that were screened by RNA pull-down. RNA immunoprecipitation and luciferase gene report assay were performed to confirm the interaction between miR-188-5p and LINC00668 in CRC cells. LINC00668 was significantly upregulated in CRC tissues and cells. Knockdown of LINC00668 suppressed cell proliferation and migration potential and induced cell apoptosis, but inhibition of miR-188-5p which was predicted to bind with LINC00668 reversed these effects. Furthermore, USP47 was a direct target of miR-188-5p, and overexpression of USP47 attenuated LINC00668 knockdown-induced tumor suppressive effects in CRC cells. Conclusively, our findings demonstrated that lncRNA LINC00668 acted as an oncogenic role in CRC cells by sponging miR-188-5p and upregulating USP47 and may represent a potential marker for CRC patients.
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