To understand how orally introduced antigen regulates peripheral immune responses, we fed cytochrome c protein to mice transgenic for the beta chain of a cytochrome c-specific TCR and followed the antigen-specific T cell responses with a cyt c/I-Ek tetramer staining reagent. We find that within 6 hr of cytochrome c administration, antigen-specific systemic T cell activation is induced, and spleen cells gain the ability to stimulate cytochrome c-specific T cell responses. Feeding multiple low doses of cytochrome c down-regulates the systemic immune response, which can be correlated with a reduction of antigen-specific T cells and not with immune deviation. These results suggest that systemic distribution of antigen contributes significantly to oral tolerance induction.
Induction of rapid T cell activation and tolerance by systemic presentation of an orally administered antigen.
Ines Gütgemann,A. Fahrer,John D. Altman,M. M. Davis,M. M. Davis,Y. Chien
Published 1998 in Immunity
ABSTRACT
PUBLICATION RECORD
- Publication year
1998
- Venue
Immunity
- Publication date
1998-06-01
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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