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Th17 cells, not IL-17+ ?? T cells, drive arthritic bone destruction in mice and humans

Pöllinger, Bernadette and Junt, Tobias and Metzler, Barbara and Walker, Ulrich A. and Tyndall, Alan and Allard, Cyril and Bay, Serkan and Keller, Roland and Raulf, Friedrich and Di Padova, Franco and O'Reilly, Terrence and Horwood, Nicole J. and Patel, Dhavalkumar D. and Littlewood-Evans, Amanda. (2011) Th17 cells, not IL-17+ ?? T cells, drive arthritic bone destruction in mice and humans. Journal of immunology, Vol. 186, H. 4. pp. 2602-2612.

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Official URL: http://edoc.unibas.ch/dok/A6005985

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Abstract

The mechanism whereby IL-17 drives rheumatoid arthritis remains incompletely understood. We demonstrate that anti-IL-17 therapy in collagen-induced arthritis ameliorates bone damage by reducing the number of osteoclasts in joints. We found equal numbers of CD4(+) Th17 and IL-17 producing ?? T cells in the joints of arthritic mice, and in vitro, both populations similarly induced osteoclastogenesis. However, individual depletion and adoptive transfer studies revealed that in vivo, Th17 cells dominated with regard to bone destruction. Unlike ?? T cells, Th17 cells were found in apposition to tartrate-resistant acid phosphatase positive osteoclasts in subchondral areas of inflamed joints, a pattern reproduced in patient biopsies. This localization was caused by Ag-specific retention, because OVA-primed Th17 cells showed a ?? T cell-like diffuse distribution. Because IL-23, as produced by osteoclasts, enhanced T cell-mediated osteoclastogenesis, we propose that Ag-specific juxtaposition is key to foster the molecular cross talk of Th17 cells and osteoclasts, thus driving arthritic bone destruction.
Faculties and Departments:03 Faculty of Medicine > Bereich Medizinische Fächer (Klinik) > Rheumatologie
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Medizinische Fächer (Klinik) > Rheumatologie
03 Faculty of Medicine > Bereich Medizinische Fächer (Klinik) > Ehemalige Einheiten Medizinische Fächer (Klinik) > Rheumatologie FPS (Tyndall)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Medizinische Fächer (Klinik) > Ehemalige Einheiten Medizinische Fächer (Klinik) > Rheumatologie FPS (Tyndall)
03 Faculty of Medicine > Departement Biomedizin > Former Units at DBM > Rheumatologie FPS (Tyndall)
UniBasel Contributors:De Vere-Tyndall, Alan and Walker, Ulrich A.
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Assoc. of Immunologists
ISSN:0022-1767
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:27 Mar 2014 13:13
Deposited On:27 Mar 2014 13:13

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