MicroRNA-187 Inhibits Growth and Metastasis of Osteosarcoma by Downregulating S100A4

Abnormal expression and dysfunction of microRNAs are correlated with osteosarcoma (OS). This study demonstrated that the miR-187 level in OS tissues and cell lines was decreased. The proliferation and metastatic abilities of U-2OS cells were inhibited by miR-187 overexpression and promoted by miR-187 knockdown. Moreover, miR-187 also inhibited growth and metastasis of OS cells in vivo. Furthermore, we revealed that miR-187 could interact with S100A4 3-UTR and inhibit S100A4 expression in OS cells. In summary, miR-187 inhibits growth and metastasis of OS cells by downregulating S100A4, which might be a potential biomarker and therapeutic target of OS.