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Kretschmer, K.* ; Apostolou, I.* ; Hawiger, D.* ; Khazaie, K.* ; Nussenzweig, M.C.* ; von Boehmer, H.*

Inducing and expanding regulatory T cell populations by foreign antigen.

Nat. Immunol. 6, 1219-1227 (2005)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Evidence suggests that regulatory T cells expressing the transcription factor Foxp3 develop extrathymically and intrathymically. Mechanisms of extrathymic induction require further scrutiny, especially as proliferation and/or phenotypic changes of preexisting suppressor cells must be distinguished from true de novo generation. Here we report the conversion of truly naive CD4(+) T cells into suppressor cells expressing Foxp3 by targeting of peptide-agonist ligands to dendritic cells and by analysis of Foxp3 expression at the level of single cells. We show that conversion was achieved by minute antigen doses with suboptimal dendritic cell activation. The addition of transforming growth factor-beta or the absence of interleukin 2 production, which reduces proliferation, enhanced the conversion rate. In addition, regulatory T cell populations induced in subimmunogenic conditions could subsequently be expanded by delivery of antigen in immunogenic conditions. The extrathymic generation and proliferation of regulatory T cells may contribute to self-tolerance as well as the poor immunogenicity of tumors and may be exploited clinically to prevent or reverse unwanted immunity.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Sprache englisch
Veröffentlichungsjahr 2005
HGF-Berichtsjahr 0
ISSN (print) / ISBN 1529-2908
e-ISSN 1529-2916
Zeitschrift Nature Immunology
Quellenangaben Band: 6, Heft: 12, Seiten: 1219-1227 Artikelnummer: , Supplement: ,
Verlag Nature Publishing Group
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Pancreatic Islet Research (IPI)
PubMed ID 16244650
Erfassungsdatum 2005-12-31