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The Journal of Immunology, 2000, 164: 2248-2254.
Copyright © 2000 by The American Association of Immunologists

Successful TCR-Based Immunotherapy for Autoimmune Myocarditis with DNA Vaccines After Rapid Identification of Pathogenic TCR1

Yoh Matsumoto, Youngheun Jee and Mayumi Sugisaki

Department of Molecular Neuropathology, Tokyo Metropolitan Institute for Neuroscience, Fuchu, Tokyo, Japan

The identification of TCRs of autoimmune disease-inducing T cells within a short period of time is a key factor for designing TCR-based immunotherapy during the course of the disease. In this study, we show that experimental autoimmune carditis-associated TCRs, Vß8.2 and Vß10, were determined by complementarity-determining region 3 (CDR3)-spectratyping analysis and subsequent sequencing of the CDR3 region of spectratype-derived TCR clones. Immunotherapy targeting both Vß8.2 and Vß10 TCRs using mAbs and DNA vaccines significantly reduced the histological severity of experimental autoimmune carditis and completely suppressed the inflammation in some animals. Since depletion or suppression of one of two types of effector cells does not improve the severity of the disease significantly, combined TCR-based immunotherapy should be considered as a primary therapy for T cell-mediated autoimmune diseases. TCR-based immunotherapy after rapid identification of autoimmune disease-associated TCRs by CDR3 spectratyping can be applicable, not only to animal, but also to human autoimmune diseases whose pathomechanism is poorly understood.




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