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Chemoattraction of human T cells by IL-18

Komai-Koma, Mousa, Gracie, J. Alastair, Wei, Xiao-Qing, Xu, Damo, Thomson, Neil, McInnes, Iain B. and Liew, Foo Yew 2003. Chemoattraction of human T cells by IL-18. The Journal of Immunology 170 (2) , pp. 1084-1090.

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Cell locomotion is crucial to the induction of an effective immune response. We report here the chemoattraction of CD4� T cells by IL-18, a member of the IL-1 cytokine family. Recombinant IL-18 increased the proportion of T cells in polarized morphology in vitro and stimulated their subsequent invasion into collagen gels in an IL-18 concentration gradient-dependent manner. Immunofluorescent microscopy studies determined that the major cell type responding to IL-18 was IL-18R�CD4�. Importantly, synovial CD4� T cells from patients with rheumatoid arthritis responded to IL-18, adopting polarized morphology and gel invasion without further activation ex vivo, indicating the physiologic relevance of our observations. Finally, injection of rIL-18 into the footpad of DBA/1 mice led to local accumulation of inflammatory cells. These data therefore demonstrate for the first time lymphocyte chemoattractant properties of a member of the IL-1 cytokine family and its relevance in inflammatory diseases

Item Type: Article
Date Type: Publication
Status: Published
Schools: Dentistry
Subjects: Q Science > QR Microbiology > QR180 Immunology
Publisher: American Association of Immunologists
ISSN: 0022-1767
Last Modified: 04 Jun 2017 04:16

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