Journal
INTERNATIONAL IMMUNOLOGY
Volume 15, Issue 8, Pages 987-992Publisher
OXFORD UNIV PRESS
DOI: 10.1093/intimm/dxg102
Keywords
IL-6; neutrophil; rheumatoid arthritis
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CD69, known as an early activation marker antigen on T and B cells, is also expressed on platelets and activated neutrophils, suggesting certain roles in inflammatory diseases. In order to address the role of CD69 in the pathogenesis of arthritis, we established CD69-null mice. CD69-null mice displayed a markedly attenuated arthritic inflammatory response when injected with anti-type II collagen antibodies. Cell transfer experiments with neutrophils, but not T cells or spleen cells, from wild-type mice into CD69-null mice restored the induction of arthritis. These results indicate a critical role for CD69 in neutrophil function in arthritis induction during the effector phase. Thus, CD69 would be a possible therapeutic target for arthritis in human patients.
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