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Int Immunol. 2004 Jul;16(7):1019-25. Epub 2004 Jun 7.

Involvement of FcRgamma in signal transduction of osteoclast-associated receptor (OSCAR).

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  • 1Department of Molecular Genetics, Chiba University Graduate School of Medicine, Japan.

Abstract

Osteoclasts regulate homeostasis of bone development. A defect in osteoclast development results in osteopetrosis. Recently, the involvement of several molecules in osteoclast development has been found. Osteoclast-associated receptor (OSCAR) is one of such molecules critical for osteoclast differentiation. However, it remains unclear how OSCAR transduces signals for osteoclast differentiation. Here, we found that the FcRgamma chain, a signal transducing adaptor molecule for Fc receptors, is associated with OSCAR and is involved in the cell surface expression of OSCAR. Furthermore, FcRgamma is required for signal transduction by OSCAR. These findings suggest that the FcRgamma-mediated signal transduction by OSCAR is involved in osteoclast differentiation.

PMID:
15184345
[PubMed - indexed for MEDLINE]
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