Predictive effect of microRNA ratio in osteosarcoma / 国际肿瘤学杂志

ABSTRACT

Objective To explore the roles of biomarkers of the ratios of microRNA (miRNA)in osteosarcoma.Methods The blood samples from 20 patients with osteosarcoma and 30 healthy people with similar age were choosed.The miRNA expression profiles were filtered by gene chips of high flux.The results were verified by qRT-PCR.The miRNA expression ratio was analysed by receiver operating characteristic (ROC)curve aiming to find the most predictive potential combination-type markers.Results Two hundred and fifty-eight miRNAs were found to be significantly deregulated in blood samples from 30 patients with osteo-sarcoma as compared with their matching normal blood samples (F=5.564,P<0.05).Four miRNAs were choosed from blood samples of22 patients with osteosarcoma and normal blood samples.MiR-181b,miR-199b-5p and miR-451 were significantly higher than that in normal blood sample (F=6.283,P<0.05),while miR-124 showed low expression (F=7.201,P<0.05).Furthermore,the ratio of miR-199b-5p/miR-124 showed a high sensitivity (96%)and specificity (97%).Conclusion The abnormal expression of miRNA in osteosar-coma makes it have a predictive effect.The ratio of miR-199b-5p/miR-124 could be served as combination-type biomarkers in the diagnosis of osteosarcoma.