Zoledronic acid accelerates osteogenesis of bone marrow mesenchymal stem cells by attenuating oxidative stress via the SIRT3/SOD2 pathway and thus alleviates osteoporosis.

European Review for Medical and Pharmacological Sciences
Z-H JinW Liao

Abstract

The aim of this study was to clarify the potential effect of zoledronic acid on alleviating oxidative stress and promoting bone marrow mesenchymal stem cells (BMSCs) osteogenesis through the SIRT3/SOD2 pathway, thus alleviating the progression of osteoporosis. Relative expression levels of osteogenesis-related genes (ALP, RUNX2, and Bglap) were determined. Meanwhile, ALP activity and capacity of mineralization in BMSCs treated with different doses of zoledronic acid were measured. Subsequently, viability and ROS level in H2O2-induced BMSCs influenced by zoledronic acid treatment were assessed. The regulatory effect of zoledronic acid on the SIRT3/SOD2 pathway was detected by Western blot. Furthermore, the involvement of the SIRT3/SOD2 pathway in zoledronic acid-mediated BMSCs osteogenesis was evaluated. Zoledronic acid treatment significantly up-regulated the levels of ALP, RUNX2, and Bglap. Meanwhile, it improved ALP activity and capacity of mineralization in BMSCs dose-dependently. H2O2 induction markedly suppressed viability and enhanced ROS level in BMSCs, which were reversed by zoledronic acid treatment. Besides, zoledronic acid protected H2O2-induced SIRT3 down-regulation and AC-SOD2/SOD2 up-regulation in BMSCs. In additi...Continue Reading

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