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Zhang B.,International Medical University | Zhang B.,PLA Cancer Research Institute | Dai J.,International Medical University | Dai J.,PLA Cancer Research Institute | And 12 more authors.
Biochemical and Biophysical Research Communications | Year: 2014

Osteopontin (OPN) is abundant in mineralized tissues and has long been implicated in bone remodeling. However, the therapeutic effect of targeting OPN in bone loss diseases and the underlying molecular mechanism remain largely unknown. Here, we reported that anti-OPN mAb (23C3) could protect against ovariectomy-induced osteoporosis in mice, demonstrated by microcomputed tomography analysis and histopathology evaluation. In vitro assay showed that 23C3 mAb reduced osteoclasts (OCs)-mediated bone resorption through promotion of mature OC apoptosis. Thus, the study has important implications for understanding the role of OPN in OC bone resorption and survival, and OPN antagonists may have therapeutic potential for osteoporosis and other osteopenic diseases. © 2014 Elsevier Inc. All rights reserved. Source

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