Volume 50, Issue 4 pp. 1146-1155
Research Article

Augmented production of chemokines by the interaction of type II collagen–reactive T cells with rheumatoid synovial fibroblasts

Do-June Min

Do-June Min

Catholic Research Institutes of Medical Sciences, Catholic University of Korea, Seoul, Korea

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Mi-La Cho

Mi-La Cho

Catholic Research Institutes of Medical Sciences, Catholic University of Korea, Seoul, Korea

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Sang-Heon Lee

Sang-Heon Lee

Catholic Research Institutes of Medical Sciences, Catholic University of Korea, Seoul, Korea

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So-Youn Min

So-Youn Min

Catholic Research Institutes of Medical Sciences, Catholic University of Korea, Seoul, Korea

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Wan-Uk Kim

Wan-Uk Kim

Catholic Research Institutes of Medical Sciences, Catholic University of Korea, Seoul, Korea

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Jun-Ki Min

Jun-Ki Min

Catholic Research Institutes of Medical Sciences, Catholic University of Korea, Seoul, Korea

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Sung-Hwan Park

Sung-Hwan Park

Catholic Research Institutes of Medical Sciences, Catholic University of Korea, Seoul, Korea

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Chul-Soo Cho

Chul-Soo Cho

Catholic Research Institutes of Medical Sciences, Catholic University of Korea, Seoul, Korea

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Ho-Youn Kim

Corresponding Author

Ho-Youn Kim

Catholic Research Institutes of Medical Sciences, Catholic University of Korea, Seoul, Korea

The Center for Rheumatic Diseases, Kang-Nam St. Mary's Hospital, Division of Rheumatology, Department of Internal Medicine, School of Medicine, Catholic University of Korea, No. 505 Banpo-Dong, Seocho-Ku, Seoul 137-040, KoreaSearch for more papers by this author
First published: 05 April 2004
Citations: 30

Abstract

Objective

To determine the impact of type II collagen (CII)–reactive T cells on the production of chemokines in the joints of patients with rheumatoid arthritis (RA).

Methods

T cell proliferative responses to bovine CII were assayed in synovial fluid (SF) mononuclear cells and peripheral blood mononuclear cells. CII-stimulated T cells were cocultured with fibroblast-like synoviocytes (FLS). The expression of interleukin-8 (IL-8), monocyte chemoattractant protein 1 (MCP-1), and macrophage inflammatory protein 1α (MIP-1α) in the sera, SF, and supernatant of the CII-stimulated T cells and FLS coculture was measured by enzyme-linked immunosorbent assays.

Results

The levels of IL-8, MCP-1, and MIP-1α in SF were significantly higher than those in paired sera of RA patients. IL-8, MCP-1, and MIP-1α levels in SF were strongly correlated with T cell responses to CII. When FLS were cocultured with CII-stimulated T cells, the production of IL-8, MCP-1, and MIP-1α was significantly increased. This increase correlated well with the T cell proliferative response to CII. Chemokine production by coculture of CII-stimulated T cells and FLS was mediated mainly by direct cell–cell contact through CD40 ligand–CD40 engagement.

Conclusion

Our data indicate that the presence of CII-reactive T cells in RA joints can increase the production of chemokines such as IL-8, MCP-1, and MIP-1α through interaction with FLS. This chemokine production is mediated by cell–cell contact, including CD40 ligand–CD40 engagement. These results suggest that CII-reactive T cells play a crucial role in the amplification and perpetuation of the inflammatory process in the rheumatoid synovium.

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