Reduction of mortality and lymphadenopathy in MRL-lpr/lpr mice treated with nonmitogenic anti-CD3 monoclonal antibody

Arthritis and Rheumatism
M HenricksonR Hirsch

Abstract

To evaluate the therapeutic efficacy of nonmitogenic anti-CD3 monoclonal antibody (MAb) in a preexisting autoaggressive response, using the MRL-lpr/lpr (MRL/l) murine model of autoimmune disease. Female MRL/l mice, 8-10 weeks of age, were treated with nonmitogenic anti-CD3 MAb or phosphate buffered saline and effects on mortality, lymphadenopathy, T cell phenotypes, anti-DNA titers, and total IgG titers were measured. Nonmitogenic anti-CD3 MAb treatment resulted in a dramatic reduction in lymphadenopathy and mortality, as well as an early reduction in alpha/beta+, CD4-, CD8-, Thy+, B220+ (double-negative) lymph node cells. No significant effects on anti-DNA or IgG titers were observed. No morbidity was observed following administration of nonmitogenic anti-CD3 MAb. A short course of treatment with nonmitogenic anti-CD3 MAb can suppress preexisting autoimmune responses without inducing the cytokine-mediated toxicity characteristic of mitogenic forms of anti-CD3 MAb. The use of nonmitogenic anti-CD3 MAb may be efficacious in the clinical setting for the treatment of T cell-mediated autoimmune disorders.

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Citations

Nov 24, 1999·The Journal of Laboratory and Clinical Medicine·L Y YangC Y Lin
Apr 18, 2006·Clinical Immunology : the Official Journal of the Clinical Immunology Society·Yoshifumi TadaKohei Nagasawa
Mar 13, 2003·Arthritis and Rheumatism·Jeffrey J BednarskiGary D Glick
Sep 7, 2000·The Journal of Immunology : Official Journal of the American Association of Immunologists·B LiangM J Mamula
Feb 23, 2002·The Journal of Immunology : Official Journal of the American Association of Immunologists·Li ZuoRaphael Hirsch

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