Mast cells contribute to autoimmune inflammatory arthritis via their tryptase/heparin complexes.
Mast cells contribute to autoimmune inflammatory arthritis via their tryptase/heparin complexes.
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DOI:
10.4049/jimmunol.182.1.647
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发表时间:
2009-01-01
影响因子:
4.4
通讯作者:
Lee, David M.
中科院分区:
文献类型:
--
作者:
Shin, Kichul;Nigrovic, Peter A.;Crish, James;Boilard, Eric;McNeil, H. Patrick;Larabee, Katherine S.;Adachi, Roberto;Gurish, Michael F.;Gobezie, Reuben;Stevens, Richard L.;Lee, David M.
Although mast cells (MCs) often are abundant in the synovial tissues of patients with rheumatoid arthritis (RA), MC’s contribution to joint inflammation and cartilage loss remains poorly understood. MC-restricted tryptase•heparin complexes have pro-inflammatory activity, and significant amounts of hTryptase-β are present in RA synovial fluid. Mouse MC protease-6 (mMCP-6) is the ortholog of hTryptase-β, and this serine protease is abundant in the synovium of arthritic mice. We now report that C57BL/6 (B6) mice lacking their tryptase•heparin complexes have attenuated arthritic responses, with mMCP-6 as the dominant tryptase responsible for augmenting neutrophil infiltration in the K/B×N mouse serum-transfer arthritis model. While inflammation in this experimental arthritis model was not dependent on protease activated receptor-2, it was dependent on the chemokine receptor CXCR2. In support of the latter data, exposure of synovial fibroblasts to hTryptase-β•heparin or mMCP-6•heparin complexes resulted in expression of the neutrophil chemotactic factors CXCL1/KC, CXCL5/LIX, and CXCL8/IL-8. Our proteomics, histochemistry, and immunohistochemistry data also revealed substantial loss of cartilage-derived aggrecan proteoglycans in the arthritic joints of wild-type B6 mice but not mMCP-6-null B6 mice. These observations demonstrate the functional contribution of MC-restricted tryptase•heparin complexes in the K/B×N mouse arthritis model and connect our mouse findings with RA pathophysiology.
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影响因子:
4.4
作者:
Corr, M;Crain, B
通讯作者:
Crain, B
影响因子:
20.3
作者:
Camerer, E;Qazi, AA;Coughlin, SR
通讯作者:
Coughlin, SR
DOI:
10.1084/jem.184.3.1061
发表时间:
1996-09-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1084/jem.20052371
发表时间:
2006-04-17
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
通讯作者:
--
影响因子:
2.9
作者:
Hallgren, J;Karlson, U;Pejler, G
通讯作者:
Pejler, G