| First Author | Osorio F | Year | 2008 |
| Journal | Eur J Immunol | Volume | 38 |
| Issue | 12 | Pages | 3274-81 |
| PubMed ID | 19039774 | Mgi Jnum | J:141368 |
| Mgi Id | MGI:3818182 | Doi | 10.1002/eji.200838950 |
| Citation | Osorio F, et al. (2008) DC activated via dectin-1 convert Treg into IL-17 producers. Eur J Immunol 38(12):3274-3281 |
| abstractText | Th cells producing IL-17 play a pro-inflammatory role at mucosal surfaces. Treg at the same sites dampen inflammation and prevent immunopathology. Th cells producing IL-17 (Th17) and Treg are thought to be distinct populations defined by expression of the transcription factors ROR-gammat and Foxp3, respectively. Here, we show that mouse CD25(+)Foxp3(+) Treg can be converted into a hybrid T-cell population characterized by the expression of Foxp3 and ROR-gammat and the production of IL-17. Conversion was observed upon coculture with DC selectively activated via dectin-1, a C-type lectin receptor involved in fungal recognition, and depended on IL-23 produced by DC. Within the Foxp3(+) population, only Foxp3(+)ROR-gammat(+) T cells but not Foxp3(+)ROR-gammat(-)-T cells become Foxp3(+)IL-17(+) T cells. These results indicate that some Foxp3(+) T cells can produce IL-17 while retaining Foxp3 expression and suggest that Treg could play an unexpected pro-inflammatory role in some settings. |
