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- Title
Phenotypical and functional analysis of intraepithelial lymphocytes from small intestine of mice in oral tolerance.
- Authors
Ruberti, Maristela; Fernandes, Luis Gustavo Romani; Simioni, Patricia Ucelli; Gabriel, Dirce Lima; Yamada, Aureo Tatsumi; Tamashiro, Wirla Maria da Silva Cunha
- Abstract
In this work, we evaluated the effects of administration of OVA on phenotype and function of intraepithelial lymphocytes (IELs) from small intestine of transgenic (TGN) DO11.10 and wild-type BALB/c mice. While the small intestines from BALB/c presented a well preserved structure, those from TGN showed an inflamed aspect. The ingestion of OVA induced a reduction in the number of IELs in small intestines of TGN, but it did not change the frequencies of CD8(+) and CD4(+) T-cell subsets. Administration of OVA via oral + ip increased the frequency of CD103(+) cells in CD4(+) T-cell subset in IELs of both BALB/c and TGN mice and elevated its expression in CD8β(+) T-cell subset in IELs of TGN. The frequency of Foxp3(+) cells increased in all subsets in IELs of BALB/c treated with OVA; in IELs of TGN, it increased only in CD25(+) subset. IELs from BALB/c tolerant mice had lower expression of all cytokines studied, whereas those from TGN showed high expression of inflammatory cytokines, especially of IFN-γ, TGF-β, and TNF-α. Overall, our results suggest that the inability of TGN to become tolerant may be related to disorganization and altered proportions of inflammatory/regulatory T cells in its intestinal mucosa.
- Publication
Clinical & developmental immunology, 2012, Vol 2012, p208054
- ISSN
1740-2530
- Publication type
Journal Article
- DOI
10.1155/2012/208054