Downregulated lncRNA GAS5 and Upregulated miR-21 Lead to Epithelial–Mesenchymal Transition and Lung Metastasis of Osteosarcomas

Lung is the primary site of osteosarcoma metastasis, but the underlying genetic or epigenetic factors determining lung metastasis of osteosarcoma are unknown. In this study, we report the status of growth arrest specific 5 (GAS5) in lung metastatic osteosarcomas. GAS5 was generally downregulated in osteosarcoma patients ( n = 24) compared to healthy controls ( n = 10) and even more so in patients with lung metastatic disease( n = 11) compared to...