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In vivo therapy with a CD4 (L3T4) monoclonal antibody is able to provide a tolerogenic milieu for a limited number of protein antigens. In this study we have analyzed the mechanisms of such tolerance to human gamma globulin, and show that tolerance is induced in adult T helper cells without a need for cellular depletion, and that it is probably not maintained by suppressor mechanisms nor by regulatory cellular circuits involving CD8+ (Ly-2+) cells. Tolerance induction is not a property peculiar to the CD4 molecule, as similar effects can be elicited with a monoclonal antibody directed to the CD11a (LFA-1) molecule. We suggest that tolerance is maintained by the functional deletion of mature T helper cells and that adhesion molecules, such as CD4, CD8 and CD11a, may play a critical role in T cell discernment of self from nonself.

Original publication

DOI

10.1002/eji.1830180717

Type

Journal article

Journal

Eur J Immunol

Publication Date

07/1988

Volume

18

Pages

1079 - 1088

Keywords

Animals, Antibodies, Monoclonal, Antibody Formation, Antigens, Differentiation, Antigens, Differentiation, T-Lymphocyte, B-Lymphocytes, Hypersensitivity, Delayed, Immune Tolerance, Immunity, Cellular, Immunization, Passive, Lymphocyte Function-Associated Antigen-1, Mice, T-Lymphocytes, T-Lymphocytes, Helper-Inducer, Time Factors, gamma-Globulins