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Background and Aim:   There are an increasing number of studies indicating the important roles served by long non-coding RNAs (lncRNAs) in the development of different types of cancer. LINC00460 is a novel identified lncRNA that was found to be upregulated in colorectal cancer. However, the biological roles of LINC00460 in colorectal cancer have yet to be fully elucidated. This study was aimed to investigate the functions and molecular mechanisms of LINC00460 on colorectal cancer metastasis.Methods:   Expression of LINC00460 and biglycan (BGN) in colorectal cancer tissues and cell lines were quantified by real time PCR or western blotting assay. Cell migration and invasion assays were performed to determine the effect of LINC00460 on tumor metastasis in vitro. The binding interaction between microRNA-149-5p and LINC00460 was revealed by luciferase reporter assay.Results:   In the present study, lncRNA LINC00460 was shown to be upregulated in colorectal cancer tissues, and overexpression of LINC00460 significantly promoted metastasis of colorectal cancer in vitro. Furthermore, miR-149-5p interacted with LINC00460, and they negatively regulated expression of each other. Transfection of miR-149-5p mimics partially counteracted the tumor metastasis-promoting effects induced by LINC00460 overexpression. Finally, overexpression of LINC00460 upregulated the expression levels of biglycan, a target gene of miR-149-5p, which has also been identified as an oncogenic driver in colorectal cancer.Conclusion:   Taken together, the present study demonstrated that LINC00460 promoted metastasis of CRC by sponging miR-149-5p and thereby affecting biglycan expression levels.

lncRNA LINC00460 Functions as a Competing Endogenous RNA and Regulates Expression of BGN by Sponging miR-149-5p in Colorectal Cancer