Objective: Osteosarcoma is a malignant bone tumor consisting of mesenchymal cells. This study aimed to investigate the inhibitory effects of human bone marrow mesenchymal stem cell (hBMSC)-derived miR-1913 on osteosarcoma.
Methods: Cell viability was determined using CCK8 and colony formation assays. The cell migration and invasion abilities were assessed using wound healing and transwell assays. RT-qPCR and western blot were used to measure the miR-1913, Neurensin-2 (NRSN2), N-cadherin, and E-cadherin expression levels. Dual luciferase reporter assays were conducted to identify the target relationship between miR-1913 and NRSN2. The exosomes were extracted and identified using TEM and NTA assays.
Results: In the osteosarcoma tumor tissues and cell lines, the NRSN2 expressions were up-regulated, which correlated with a poor osteosarcoma prognosis. MiR-1913 inhibited the cell viability, proliferation, migration, and invasion by negatively targeting NRSN2. Furthermore, the hBMSC-derived exosomes delivered miR-1913 to inhibit the NRSN2 expression in the osteosarcoma cells.
Conclusion: The inhibitory role of hBMSC-derived miR-1913 on osteosarcoma progression was achieved by targeting NRSN2, indicating the potential therapeutic value of hBMSC-derived miR-1913.
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