Knockdown of long non-coding RNA CAT104 inhibits the proliferation, migration and invasion of human osteosarcoma cells by regulating microRNA-381.

Osteosarcoma is the most common primary malignant bone tumor in children and adolescents. This study aimed to explore the effects of long non-coding RNA CAT104 and microRNA-381 (miR-381) on osteosarcoma cell proliferation, migration, invasion and apoptosis, as well as the underlying potential mechanism. We found that CAT104 was highly expressed in osteosarcoma MG-63 and OS-732 cells. Knockdown of CAT104 significantly inhibited OS-732 cell proliferation, migration and invasion, but promoted cell apoptosis. CAT104 regulated the expression of miR-381 and miR-381 participated in the effects of CAT104 on OS-732 cells. Zinc finger E box binding homeobox 1 (ZEB1) was a direct target gene of miR-381, which was involved in the regulatory roles of miR381 in OS-732 cell proliferation, migration, invasion and apoptosis, as well as c-Jun Nterminal kinase (JNK) and Wnt/ß-catenin pathways. In conclusion, our research verified that suppression of CAT104 exerted significant inhibitory effects on osteosarcoma cell proliferation, migration and invasion by regulating the expression of miR-381 and downstream ZEB1, as well as JNK and Wnt/ß-catenin pathways.