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- Title
Anti-c-fms Antibody Prevents Osteoclast Formation and Bone Resorption in Co-Culture of Osteoblasts and Osteoclast Precursors In Vitro and in Ovariectomized Mice.
- Authors
Nara, Yasuhiko; Kitaura, Hideki; Ogawa, Saika; Shen, Wei-Ren; Qi, Jiawei; Ohori, Fumitoshi; Noguchi, Takahiro; Marahleh, Aseel; Pramusita, Adya; Kinjo, Ria; Mizoguchi, Itaru
- Abstract
Osteoporosis morphology is characterized by bone resorption and decreases in micro-architecture parameters. Anti-osteoporosis therapy targets osteoclasts because bone resorption is a unique function of osteoclasts. Anti-c-fms antibodies against the receptor for macrophage colony-stimulating factor (M-CSF) inhibit osteoclast formation and bone resorption in vitro and in vivo. However, the effect of anti-c-fms antibodies on bone resorption in ovariectomized (OVX) mice is unknown. In this study, we evaluated the effect of anti-c-fms antibodies on osteoclast formation and bone resorption in osteoblast–osteoclast precursor co-culture in vitro and in OVX mice. Osteoblast and osteoclast precursor co-cultures treated with anti-c-fms antibodies showed significantly inhibited osteoclast formation, while cultures without anti-c-fms antibody treatment showed osteoclast formation. However, anti-c-fms antibodies did not change the receptor activator of nuclear factor kappa-B ligand (RANKL) or osteoprotegrin (OPG) expression during osteoblast and osteoclast differentiation in vitro. These results indicate that anti-c-fms antibodies directly affected osteoclast formation from osteoclast precursors in co-culture. OVX mice were treated with intraperitoneal injections of anti-c-fms antibody. The trabecular bone structure of the femur was assessed by micro-computer tomography. The anti-c-fms antibody inhibited osteoclast formation and bone loss compared with PBS-treated OVX mice. These results indicate potential for the therapeutic application of anti-c-fms antibodies for postmenopausal osteoporosis.
- Subjects
BONE resorption; OSTEOCLASTOGENESIS; TRANCE protein; BONE growth; OSTEOBLASTS; MACROPHAGE colony-stimulating factor
- Publication
International Journal of Molecular Sciences, 2020, Vol 21, Issue 17, p6120
- ISSN
1661-6596
- Publication type
Article
- DOI
10.3390/ijms21176120