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Immunology. 2004 Sep;113(1):89-98.

Engagement of the CD137 (4-1BB) costimulatory molecule inhibits and reverses the autoimmune process in collagen-induced arthritis and establishes lasting disease resistance.

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  • 1University Children's Hospital, Eberhard Karls University, Tuebingen, Germany. juergen.foell@medizin.uni-halle.de

Abstract

Agonistic antibodies against CD137 act as costimulators in the activation of CD8 T cells. They enhance the immune response against syngeneic tumour grafts and suppress T cell-dependent humoral immune responses in vivo. The present study was undertaken to determine whether suppression of antibody production by anti-CD137 mAb affects the development of collagen-induced arthritis (CIA). Male DBA/1J mice were immunized with bovine collagen II (CII) and treated with an agonistic anti-CD137 mAb or an isotype-matched control mAb. Mice were assessed regularly for macro- and microscopic signs of arthritis and for the appearance of collagen-specific antibody production. Interferon (IFN)-gamma determination, FACS analysis of splenocytes and histopathological joint examinations were performed after the animals were killed. Administration of anti-CD137 mAb at the time of collagen immunization blocked the development of disease and inhibited the humoral immune response against CII. Agonistic anti-CD137 mAb exhibited therapeutic efficacy even after the immune response to CII had succeeded and the disease became apparent. Furthermore, it induced a protective memory in the animals, enabling resistance to subsequent challenges with the pathogenic antigen. Our results suggest a key role for CD137 in the pathogenesis of CIA. This model provides insights into immunoregulatory conditions that control the pathogenesis of autoimmune diseases.

Comment in

PMID:
15312139
[PubMed - indexed for MEDLINE]
PMCID:
PMC1782553
Free PMC Article

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