F Mor, A W Lohse, N Karin, I R Cohen
J Clin Invest.
1990;
85(5):1594–1598
doi:10.1172/JCI114610
This article Copyright © 1990, The American Society for Clinical Investigation
Abstract
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E
ffective T cell vaccination against experimental autoimmune diseases involves treatment with activated, autoimmune T lymphocytes. The present study was undertaken to learn whether antigen-specific T cells present in low frequency could be selected in vitro without using the specific antigen. The rat models of adjuvant arthritis and experimental autoimmune encephalomyelitis were investigated using proliferation assays and limiting dilution techniques to quantify the changes in reactivity of a heterogenous population of lymphocytes to the relevant antigen. Stimulation with concanavalin A for 2 d and then culture in IL-2-containing medium led to a substantial increase in the activity and frequency of the specific autoimmune T cells. Enrichment of antigen-specific T cells could be demonstrated using lymph node, spleen, or peripheral blood lymphocytes, from rats late in the course of disease. The effect was not evident in lymphocytes from the thymus. These results are relevant to the clinical application of T cell vaccination and to investigation of self-antigens in autoimmune disease.
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