Document Detail


Peripheral CD4(+) T-cell tolerance is induced in vivo by rare antigen-bearing B cells in follicular, marginal zone, and B-1 subsets.
MedLine Citation:
PMID:  23532986     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
B cells are efficient APCs when they internalize antigen via BCR-mediated uptake. Adoptively transferred antigen-presenting B cells can induce T-cell tolerance to foreign and self antigens; however, it is unknown whether endogenous B cells presenting self-peptides interact with naïve T cells and contribute to peripheral T-cell self-tolerance. Moreover, the relative abilities of mature B-cell subsets to induce T-cell tolerance have not been examined. To address these questions, we created a new mouse model wherein a very small fraction of B cells expresses an antigen transgene that cannot be transferred to other APCs. We limited antigen expression to follicular, marginal zone, or B-1 B-cell subsets and found that small numbers of each subset interacted with naïve antigen-specific T cells. Although antigen expressed by B-1 B cells induced the most T-cell division, divided T cells subsequently disappeared from secondary lymphoid tissues. Independent of which B-cell subset presented antigen, the remaining T cells were rendered hypo-responsive, and this effect was not associated with Foxp3 expression. Our data show that physiologically relevant proportions of B cells can mediate peripheral T-cell tolerance, and suggest that the mechanisms of tolerance induction might differ among follicular, marginal zone, and B-1 B-cell subsets.
Authors:
Susan E Murray; Katelynne Gardner Toren; David C Parker
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2013-05-08
Journal Detail:
Title:  European journal of immunology     Volume:  43     ISSN:  1521-4141     ISO Abbreviation:  Eur. J. Immunol.     Publication Date:  2013 Jul 
Date Detail:
Created Date:  2013-07-05     Completed Date:  2013-09-09     Revised Date:  2013-12-02    
Medline Journal Info:
Nlm Unique ID:  1273201     Medline TA:  Eur J Immunol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1818-27     Citation Subset:  IM    
Copyright Information:
© 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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MeSH Terms
Descriptor/Qualifier:
Adoptive Transfer
Animals
Antigen Presentation / immunology
B-Lymphocyte Subsets / immunology*
B-Lymphocytes / immunology*
CD4-Positive T-Lymphocytes / immunology*
Cell Separation
Flow Cytometry
Immune Tolerance / immunology*
Lymphocyte Activation / immunology
Mice
Mice, Transgenic
Spleen / cytology,  immunology
Grant Support
ID/Acronym/Agency:
AI070934/AI/NIAID NIH HHS; R01 AI070934/AI/NIAID NIH HHS; R01 AI092080/AI/NIAID NIH HHS

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