Abstract
MicroRNAs (miRNAs) contribute to the development and progression of various types of human cancers. The aim of this study was to study the role of miR-145 and to identify its functional target gene in osteosarcoma (OS) cells. We found that miR-145 was reduced in OS tissues and cell lines. Enforced expression of miR-145 inhibited cell proliferation, migration, and invasion abilities of MG-63 cells. Furthermore, we revealed that Rho-associated protein kinase 1 (ROCK1) was a target of miR-145 in OS. Finally, we found that silencing of ROCK1 performed similar effects with miR-145 in MG-63 cells, and ROCK1 was inversely correlated with miR-145 in OS tissues. Collectively, these data indicate that miR-145 may act as a tumor suppressor and contributes to the progression of OS through targeting ROCK1.
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