Abstract:
:SHPS-1 is a transmembrane protein that binds the protein tyrosine phosphatases SHP-1 and SHP-2 through its cytoplasmic region and is abundantly expressed on dendritic cells and macrophages. Here we show that mice expressing a mutant form of SHPS-1 fail to develop type-II collagen (CII)-induced arthritis (CIA), a model for rheumatoid arthritis in humans. Histological examinations of the arthritic paws from immunized wild-type mice revealed that cartilage was destroyed in association with marked mononuclear cell infiltration, while only mild cell infiltration was observed in immunized SHPS-1 mutant mice. Consistently, the serum levels of both IgG and IgG2a specific to CII and of IL-1beta in immunized SHPS-1 mutant mice were markedly reduced compared with those apparent for wild-type mice. The CII-induced proliferation of, and production of cytokines by, T cells from immunized SHPS-1 mutant mice were reduced compared to wild-type cells. These results suggest that SHPS-1 is essential for development of CIA.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Okuzawa C,Kaneko Y,Murata Y,Miyake A,Saito Y,Okajo J,Tomizawa T,Kaneko Y,Okazawa H,Ohnishi H,Matozaki T,Nojima Ydoi
10.1016/j.bbrc.2008.04.124subject
Has Abstractpub_date
2008-07-04 00:00:00pages
561-6issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(08)00807-3journal_volume
371pub_type
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