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Resting dendritic cells induce peripheral CD8+ T cell tolerance in vivo through PD-1 and CTLA-4


Probst, H C; McCoy, K; Okazaki, T; Honjo, T; van den Broek, Maries (2005). Resting dendritic cells induce peripheral CD8+ T cell tolerance in vivo through PD-1 and CTLA-4. Nature Immunology, 6:280-286.

Abstract

T cells recognizing self proteins exist without causing autoimmunity in healthy individuals. These autoreactive T cells are kept in check by peripheral tolerance. Using a model for peripheral CD8+ T cell tolerance resulting from antigen presentation by resting dendritic cells in vivo, we show here that CD8+ T cell tolerance operates through T cell–intrinsic mechanisms such as deletion or functional inactivation. Peripheral CD8+ T cell tolerance depended on signaling via the costimulatory molecule PD-1, as an absence of PD-1 converted tolerance induction into priming. Blocking of the costimulatory molecule CTLA-4 resulted in impaired tolerance and enhanced the effect of the absence of PD-1, suggesting that PD-1 and CTLA-4 act synergistically. Thus PD-1 and CTLA-4 are crucial molecules for peripheral CD8+ T cell tolerance induced by resting dendritic cells.

Abstract

T cells recognizing self proteins exist without causing autoimmunity in healthy individuals. These autoreactive T cells are kept in check by peripheral tolerance. Using a model for peripheral CD8+ T cell tolerance resulting from antigen presentation by resting dendritic cells in vivo, we show here that CD8+ T cell tolerance operates through T cell–intrinsic mechanisms such as deletion or functional inactivation. Peripheral CD8+ T cell tolerance depended on signaling via the costimulatory molecule PD-1, as an absence of PD-1 converted tolerance induction into priming. Blocking of the costimulatory molecule CTLA-4 resulted in impaired tolerance and enhanced the effect of the absence of PD-1, suggesting that PD-1 and CTLA-4 act synergistically. Thus PD-1 and CTLA-4 are crucial molecules for peripheral CD8+ T cell tolerance induced by resting dendritic cells.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Experimental Immunology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Scopus Subject Areas:Health Sciences > Immunology and Allergy
Life Sciences > Immunology
Language:English
Date:2005
Deposited On:26 Apr 2017 14:55
Last Modified:07 Mar 2022 12:24
Publisher:Nature Publishing Group
ISSN:1529-2908
OA Status:Green
Publisher DOI:https://doi.org/10.1038/ni1165
PubMed ID:15685176
  • Content: Accepted Version