Osteosarcoma (OS) derived from bone-forming mesenchymal cells is the most common primary bone tumour in children and adolescents. 1-3 Among the OS patients, more than 90% are high-grade malignancies based on the grade of differentiation, and more than 20% have demonstrated significant metastasis lesions at the time of clinical diagnosis. 4,5 With the improvement of early diagnosis and treatment strategies, the 5-year survival rate of OS patients has increased up to 70%. 6 However, the long-term prognosis remains poor for the patients with advanced OS over the past 30 years mainly due to the resistance to chemotherapeutic agents, in addition to the metastatic