The Journal of Experimental Medicine
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Journal of Experimental Medicine, Vol 177, 1517-1521, Copyright © 1993 by Rockefeller University Press


ARTICLES

Clonal anergy blocks in vivo growth of mature T cells and can be reversed in the absence of antigen

B Rocha, C Tanchot and H Von Boehmer
U345 INSERM, Centre Hospitalien Universitaire Necker-Enfants Malades, Paris, France.

Experiments in various models have indicated that immunological tolerance can result from the physical elimination (deletion) of reactive lymphocytes as well as from anergy. We have previously reported that mature CD4-CD8+ T cells when confronted with their antigen can proliferate extensively but are finally eliminated or become intrinsically anergic such that remaining cells are refractory to stimulation by any T cell receptor ligands, even in the presence of exogenous interleukin 2. Here we show that in vivo the anergy can be reversed in the absence of antigen, such that the cells are then able to proliferate extensively in vivo to a new challenge with the antigen in question.
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