online verfügbar vsl. 08/2015 Verlagsversion online verfügbar vsl. 08/2015
Endothelial amine oxidase AOC3 transiently controbutes to adaptive immune responses in the airways.
Eur. J. Immunol. 44, 3232-3239 (2014)
AOC3 (Amine oxidase, copper containing 3, also known as vascular adhesion protein-1 (VAP-1)) is an endothelial adhesion molecule that contributes to the extravasation of neutrophils, macrophages and lymphocytes to sites of inflammation. However, the role of AOC3/VAP-1 in allergic responses remains unknown. Here we studied eosinophil and CD4+ T-cell recruitment to the airways using AOC3/VAP-1-deficient mice. In an OVA-triggered asthma model, AOC3/VAP-1 slightly contributed to the accumulation of leukocytes in lungs in an age-dependent manner. We then established a new model to kinetically measure recruitment of OVA-specific CD4+ T cells to different airway immune compartments during the priming and effector phases of an adaptive immune response. The results showed that in the absence of AOC3/VAP-1, recruitment of antigen-specific CD4+ T cells to draining bronchial lymph nodes is reduced by 89% on day 3 after tracheal allergen exposure, but this difference was not observed on day 6. The dispersal of effector cells to lung and tracheal mucosa is AOC3/VAP-1-independent. Thus, in allergic airway reactions, AOC3/VAP-1 transiently contributes to the antigen-specific, CD4+ T-cell traffic to secondary lymphatic tissues, but not to airway mucosa or lung parenchyma. Our results suggest a largely redundant function for AOC3/VAP-1 in allergic inflammatory responses of the airways.
Zusatzinfos bearbeiten [➜Einloggen]
Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Adaptive immunity, Adhesion molecules, Airways, Allergy, Leukocyte trafficking
ISSN (print) / ISBN 0014-2980
Zeitschrift European Journal of Immunology
Quellenangaben Band: 44, Heft: 11, Seiten: 3232-3239
Verlag Wiley-Blackwell - STM
Institut(e) Institute of Experimental Genetics (IEG)