BackgroundTo explore the effect of has_circ_0088214 in osteosarcoma cells and corresponding mechanisms.MethodsOsteosarcoma cell line MG63 and U2OS were selected in this study. Wound-healing and matrigel transwell assays were performed to detect migration and invasion capacities. CCK-8 assay was used to measure cell growth and cisplatin resistance. Cell apoptosis was observed by Hoechst 33342 staining after H2O2induce. Western Blot was used to detect protein expression level. The rescue experiments were also performed using an Akt activator SC79.ResultsHsa_circ_0088214 was down-regulated in osteosarcoma cells compared to normal osteoblast cells. Over-expression of has_circ_0088214 significantly reduced osteosarcoma cells invasion, migration and resistance to cisplatin, but the apoptotic ratio was increased. The phosphorylation level of Akt could be regulated by hsa_circ_0088214, and rescue experiments proved Akt signaling pathway took part in above biological processes.ConclusionUp-regulation of hsa_circ_0088214 suppresses invasion, migration, cisplatin resistance but promoting apoptosis induced by H2O2by inhibiting Akt signaling pathway in osteosarcoma.