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    Overactivation and excessive differentiation of osteoclasts (OCs) has been implicated in the course of bone metabolism-related diseases. Although fullerenol nanoparticles (fNPs) have been suggested to inhibit OC differentiation and OC function in our previous work, systemic studies on the effect of fNPs on bone diseases, e.g., osteoporosis (OP), in vivo remain elusive. Herein, it is demonstrated that fNPs significantly suppress the differentiation of OCs that derived from the murine bone marrow monocytes and inhibit the formation of the sealing zone by blocking the formation and patterning of podosomes in OCs spatiotemporally. In vivo, fNPs are supposed to be an efficient inhibitor of the overactivation of OCs in a LPS-induced bone erosion mouse model. The therapeutic effect of fNPs on osteoporosis is also investigated in an ovariectomy-induced osteoporosis rat model. The well-organized trabecular bone, the reduction in the number of TRAP positive cells, the improvement of bone-associated parameters, and the mechanical properties all demonstrate that fNPs, similar to diphosphonates, can be a promising candidate for the effective treatment of osteoporosis.


    Kui Chen, Huan Geng, Wei Liang, Haojun Liang, Yujiao Wang, Jianglong Kong, Jiaxin Zhang, Yuelan Liang, Ziteng Chen, Jiacheng Li, Ya-Nan Chang, Juan Li, Gengyan Xing, Gengmei Xing. Modulated podosome patterning in osteoclasts by fullerenol nanoparticles disturbs the bone resorption for osteoporosis treatment. Nanoscale. 2020 May 07;12(17):9359-9365

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    PMID: 32315013

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