Defective post-thymic tolerance mechanisms during the chronic progressive stage of multiple sclerosis

Nature Medicine
J CorrealeL P Weiner

Abstract

We have recently isolated a panel of T-cell clones from chronic progressive multiple sclerosis (MS) patients that are capable of functioning as antigen-presenting cells and of expressing the costimulatory molecules B7-1 and B7-2. In this report we show that these T-cell clones are resistant to inhibitory regulation, including the induction of anergy and sensitivity to tumor growth factor-beta (TGF-beta)-induced growth inhibition. The resistance to anergy induction was associated with expression of B7 costimulatory molecules. These data suggest that lack of responsiveness to peripheral inhibitory signals may account for the entry of autoimmune diseases into a chronic progressive phase.

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Oct 24, 1998·Immunology Today·K V SalojinT L Delovitch
Jun 1, 1997·The Journal of Clinical Investigation·K GençA T Reder
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