Abstract
MicroRNAs (miRNAs) play an essential role in cancer development. Several studies have indicated that miRNAs mediate tumorigenesis processes, such as, inflammation, proliferation, apoptosis and invasion. In the present study, we focused on the influence of the miR-127-3p on the proliferation, migration and invasion of osteosarcoma (OS). MiR-127-3p was found at reduced levels in OS tissues and cell lines. Overexpression of miR-127-3p in the OS cell lines significantly inhibited the cell proliferation, migration and invasion; however, inhibition of miR-127-3p increased the proliferation, migration and invasion of OS in vitro. SETD8 was identified as a direct target of miR-127-3p, and SETD8 expression decreased post miR-127-3p overexpression, while SETD8 overexpression could reverse the potential influence of miR-127-3p on the migration and invasion of OS cells. MiR-127-3p is suggested to act mainly via the suppression of SETD8 expression. Overall, the results revealed that miR-127-3p acts as a tumor suppressor and that its down-regulation in cancer may contribute to OS progression and metastasis, suggesting that miR-127-3p could be a potential therapeutic target in the treatment of OS.
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