Differential T-helper cell polarization after allergen-specific stimulation of autologous dendritic cells in polysensitized allergic patients

International Archives of Allergy and Immunology
Kazem AshjaeiK Hoffmann-Sommergruber

Abstract

Dendritic cells (DCs) play an important role in the induction and regulation of adaptive immune responses by polarizing T-helper (Th) cells. In allergic disease this response is dominated by Th2 cells. It is still unclear whether the activation of Th cells by DCs in atopic individuals is allergen specific. Monocyte-derived DCs (MoDCs) obtained from polysensitized patients were stimulated with purified Bet v 1, Phl p 5 and Act d 10, and the surface marker expression was analysed. Proliferation and cytokine profiles of autologous naïve CD4+ T cells co-cultured with allergen-pulsed MoDCs were assessed. The addition of either Bet v 1 or Phl p 5 did not further increase the expression of surface markers from matured MoDCs in all study groups. In co-cultures, autologous naïve CD4+ T cells proliferated when DCs obtained from individuals allergic to birch and grass pollen were stimulated with Bet v 1 and Phl p 5, respectively. In the co-culture supernatants, significantly increased levels of IL-5 and IL-13 were detected. This effect correlated with the sensitization background and was absent when applying an unspecific allergen, Act d 10. The levels of IL-10 in supernatants of MoDCs and the levels of IL-10 and IFN-γ in supernatants of ...Continue Reading

Citations

Jun 10, 2015·Journal of Immunological Methods·Kazem AshjaeiKarin Hoffmann-Sommergruber
Jul 12, 2017·International Journal of Molecular Sciences·Piotr HumeniukKarin Hoffmann-Sommergruber
May 30, 2019·Molecular Nutrition & Food Research·Daniel Lozano-OjalvoRosina López-Fandiño
Sep 20, 2017·Molecular Nutrition & Food Research·Gabriel MazzucchelliKarin Hoffmann-Sommergruber

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Methods Mentioned

BETA
ELISA
density gradient centrifugation
FCS
FACS

Software Mentioned

BD FACS Diva

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