Abstract
Background: Dendritic cells (DCs) regulate the immune response to allergens in the lung; they induce either effector or regulatory T cells, which promote or suppress, respectively, the development of allergy. IL-10 is a potent immunosuppressive cytokine that induces type 1 regulatory (Tr1) T cells. Objective: To generate allergen-specific Tr1 cells in vitro from children with allergy. Methods: Monocyte-derived DCs from children with allergy to house dust mites (HDM) were generated by incubating the cells with IL-10 and pulsing them with Der p 2, a major HDM allergen, or by pulsing them with Der p 2 and incubating them with IL-10 during their last 2 days of differentiation. Results: Der p 2-specific T-cell proliferation and TH2 cytokine production were significantly reduced when T cells from patients with allergy to HDM were activated with autologous Der p 2-pulsed DCs that had been differentiated or incubated with IL-10. T-cell lines generated with Der p 2-pulsed DCs that were differentiated with IL-10 were hyporesponsive to reactivation with Der p 2 and able to suppress Der p 2-specific TH2 effector cells. Conclusion: Dendritic cells differentiated in the presence of IL-10 and pulsed with allergen gave rise to a population of tolerogenic DCs that induced allergen-specific Tr1 cells. This finding represents an important step forward to the prospective clinical application of tolerogenic DCs to modulate allergen-specific T-cell responses.
Original language | English |
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Pages (from-to) | 727-736 |
Number of pages | 10 |
Journal | Journal of Allergy and Clinical Immunology |
Volume | 125 |
Issue number | 3 |
DOIs | |
Publication status | Published - Mar 2010 |
Keywords
- Allergy
- dendritic cells
- Der p 2
- house dust mites
- IL-10
- T2 cells
- Tr1 cells
ASJC Scopus subject areas
- Immunology and Allergy
- Immunology