Journal
ISCIENCE
Volume 26, Issue 10, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.isci.2023.107760
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This study found that CG inhibits osteoclast differentiation and function by inhibiting the activation of NFATc1 and ultimately osteoclast formation by inhibiting RANKL-mediated Ca2+ oscillation and the NF-KB/MAPK signaling pathway. CG also improved bone loss in ovariectomized mice, suggesting its potential for the prevention and treatment of osteoporosis.
Osteoporosis is a prevalent systemic metabolic disease in modern society, in which patients often suffer from bone loss due to over-activation of osteoclasts. Currently, amelioration of bone loss through mod-ulation of osteoclast activity is a major therapeutic strategy. Ataxia telangiectasia mutated (ATM) inhib-itor CGK733 (CG) was reported to have a sensitizing impact in treating malignancies. However, its effect on osteoporosis remains unclear. In this study, we investigated the effects of CG on osteoclast differen-tiation and function, as well as the therapeutic effects of CG on osteoporosis. Our study found that CG inhibits osteoclast differentiation and function. We further found that CG inhibits the activation of NFATc1 and ultimately osteoclast formation by inhibiting RANKL-mediated Ca2+ oscillation and the NF-KB/MAPK signaling pathway. Next, we constructed an ovariectomized mouse model and demonstrated that CG improved bone loss in ovariectomized mice. Therefore, CG may be a potential drug for the pre-vention and treatment of osteoporosis.
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