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MFG-E8, a novel homeostatic regulator of osteoclastogenesis #MMPMID26052544
Hajishengallis G
Inflamm Cell Signal 2014[]; 1 (5): e285- PMID26052544show ga
Although the glycoprotein MFG-E8 (milk fat globule-epidermal growth factor-factor 8) has been investigated extensively as an anti-inflammatory and homeostatic molecule, a possible role in bone homeostasis and disease was not addressed until recently. Our group has now shown that MFG-E8 is expressed by human and mouse osteoclasts and regulates their differentiation and function (Abe et al., J Immunol 2014;193:1383?1391). Whereas genetic deficiency or antibody-mediated neutralization of MFG-E8 enhances osteoclastogenesis and promotes inflammation-induced bone loss in mice, local administration of recombinant MFG-E8 blocks bone loss. These findings establish MFG-E8 as a novel homeostatic regulator of osteoclastogenesis and suggest that MFG-E8 could be exploited therapeutically to treat disorders associated with inflammatory bone loss, such as periodontitis and rheumatoid arthritis.