Surface Activity as a Crucial Factor of the Biological Actions of Ole e 1, the Main Aeroallergen of Olive Tree (Olea europaea) Pollen
- 14 October 2016
- journal article
- research article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 32 (42), 11055-11062
- https://doi.org/10.1021/acs.langmuir.6b02831
Abstract
Aeroallergens are airborne substances -mainly proteins- capable of triggering Th2-immune responses in respiratory allergies. They enter into the body through the upper airways, reaching the mucosa afterwards. Mucosae lining at the luminal side consists of an epithelial barrier completely covered by mucus and pulmonary surfactant. Both, pulmonary surfactant and plasma membrane of the epithelial cells represent two physiological phospholipid-based barriers where allergens first impact before triggering their biological effects. The interaction of allergens with lipids at relevant physiological surfaces could promote structural changes on the molecule, resulting on a potential modification of its allergenic properties. In this work, we have firstly described the surface and phospholipid interaction capabilities of the clinically relevant aeroallergen Ole e 1, the main allergen of olive tree pollen. By using epifluorescence microscopy of Langmuir transferred films, we observed that lipid-packed ordered domains may function as a preferential location for allergen to accumulate at the air-liquid interface, an effect that is abolished in the presence of cholestenone. The possible implications of phospholipid-interfacial effects in the modification of allergen structural and functional properties will be discussed.Keywords
Funding Information
- Ministerio de Economía y Competitividad (BIO2012-30733, BIO2015-67930-R, Ramón y Cajal Fellow, SAF2011-26716, SAF2014-53209-R)
- Ministerio de Educación, Cultura y Deporte (FPU fellowship)
- Instituto de Salud Carlos III (RIRAAF Network RD12/0013/0015)
- Regional Government of Madrid (S2013/MlT-2807)
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