Journal article
Tolerance to ingested deamidated gliadin in mice is maintained by splenic, type 1 regulatory T cells.
- Abstract:
- BACKGROUND and AIMS: Patients with celiac disease have permanent intolerance to gluten. Because of the high frequency of this disorder (approximately 1 in 100 individuals), we investigated whether oral tolerance to gluten differs from that to other food proteins. METHODS: Using transgenic mice that express human HLA-DQ2 and a gliadin-specific, humanized T-cell receptor, we compared gluten-specific T-cell responses with tolerogenic mucosal T-cell responses to the model food protein ovalbumin. RESULTS: Consistent with previous findings, the ovalbumin-specific response occurred in the mesenteric lymph nodes and induced Foxp3(+) regulatory T cells. In contrast, ingestion of deamidated gliadin induced T-cell proliferation predominantly in the spleen but little in mesenteric lymph nodes. The gliadin-reactive T cells had an effector-like phenotype and secreted large amounts of interferon gamma but also secreted interleukin-10. Despite their effector-like phenotype, gliadin-reactive T cells had regulatory functions, because transfer of the cells suppressed a gliadin-induced, delayed-type hypersensitivity response. CONCLUSIONS: Ingestion of deamidated gliadin induces differentiation of tolerogenic, type 1 regulatory T cells in spleens of HLA-DQ2 transgenic mice. These data indicate that under homeostatic conditions, the T-cell response to deamidated gliadin is tolerance, which is not conditioned by the mucosal immune system but instead requires interleukin-10 induction by antigen presentation in the spleen.
- Publication status:
- Published
Actions
Access Document
- Publisher copy:
- 10.1053/j.gastro.2011.04.048
Authors
- Journal:
- Gastroenterology More from this journal
- Volume:
- 141
- Issue:
- 2
- Pages:
- 610-620.e2
- Publication date:
- 2011-08-01
- DOI:
- EISSN:
-
1528-0012
- ISSN:
-
0016-5085
- Language:
-
English
- Keywords:
- Pubs id:
-
pubs:314779
- UUID:
-
uuid:ecacabed-4278-4db7-82c9-68f4b19c9798
- Local pid:
-
pubs:314779
- Source identifiers:
-
314779
- Deposit date:
-
2012-12-19
- ARK identifier:
Terms of use
- Copyright date:
- 2011
If you are the owner of this record, you can report an update to it here: Report update to this record