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FcR γ promotes contact hypersensitivity to oxazolone without affecting the contact sensitisation process in B6 mice.
- Source :
- Experimental Dermatology; Mar2015, Vol. 24 Issue 3, p204-208, 5p
- Publication Year :
- 2015
-
Abstract
- The process of sensitisation by specific contact allergens is indispensable for the induction of allergic contact dermatitis. Oxazolone is a well-characterised contact allergen. Previous studies suggested that immune cells bearing the FcR γ subunit are essential for oxazolone-induced contact hypersensitivity, but the biological functions of the FcR γ subunit in the process of sensitisation to oxazolone remain unknown. In this study, we show that FcR γ deficiency decreases ear-swelling responses to oxazolone in mice. However, we found that oxazolone-sensitised FcR γ<superscript>−/−</superscript> mice and oxazolone-sensitised wild-type ( WT) mice have comparable numbers of CD11c<superscript>+</superscript> MHCII<superscript>hi</superscript> dendritic cells ( DCs) in their draining lymph nodes ( LNs). In addition, oxazolone-sensitised LN cells from both FcR γ<superscript>−/−</superscript> and WT mice showed considerable production of interferon-gamma ( IFN γ), interleukin-4 ( IL-4) and IL-17A upon oxazolone-keyhole limpet haemocyanin loading. Consistent with these data, oxazolone-sensitised FcR γ<superscript>−/−</superscript> and FcR γ<superscript>+/+</superscript> LN cells conferred contact hypersensitivity to WT naïve mice challenged with the hapten. Our findings clearly indicate that, in an experimental mouse model, the FcR γ subunit positively regulates contact hypersensitivity to oxazolone without affecting the contact sensitisation process. [ABSTRACT FROM AUTHOR]
- Subjects :
- OXAZOLONE
ALLERGIES
OXAZOLES
SKIN inflammation
HAPTENS
DENDRITIC cells
Subjects
Details
- Language :
- English
- ISSN :
- 09066705
- Volume :
- 24
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Experimental Dermatology
- Publication Type :
- Academic Journal
- Accession number :
- 101158298
- Full Text :
- https://doi.org/10.1111/exd.12622