BACKGROUND: Allergy to the domestic dog (Canis familiaris) affects 5-10% of the population in affluent countries. Three of four patients are allergic to more than one pet, which can only partially be explained by cross-reactivity between serum albumins. The lipocalin protein family harbours allergens in mammalian species. METHODS: We set out to clone and characterize a novel dog allergen, and investigate its potential role in cross-sensitization between dog, cat and horse. The gene encoding Can f 6 was amplified from dog skin and bladder cDNA libraries. The corresponding allergen was produced and purified by recombinant techniques and evaluated by SDS-PAGE, size exclusion chromatography, circular dichroism spectra, ELISA and basophil activation test. RESULTS: IgE antibodies to Can f 6 were found in serum from 38% of dog-sensitized subjects. Sequence similarities between the lipocalin allergens Can f 6, Fel d 4 (cat) and Equ c 1 (horse) suggested a probability for cross-reactivity, which was demonstrated by competitive ELISA. The biological relevance of Can f 6 was confirmed by basophil activation test in dog-allergic patients. CONCLUSION: Can f 6 is a new lipocalin dog allergen that cross-reacts with lipocalins from horse and cat. Can f 6 and homologous allergens may contribute to multisensitization and symptoms in individuals allergic to mammals.
BACKGROUND:Allergy to the domestic dog (Canis familiaris) affects 5-10% of the population in affluent countries. Three of four patients are allergic to more than one pet, which can only partially be explained by cross-reactivity between serum albumins. The lipocalin protein family harbours allergens in mammalian species. METHODS: We set out to clone and characterize a novel dog allergen, and investigate its potential role in cross-sensitization between dog, cat and horse. The gene encoding Can f 6 was amplified from dog skin and bladder cDNA libraries. The corresponding allergen was produced and purified by recombinant techniques and evaluated by SDS-PAGE, size exclusion chromatography, circular dichroism spectra, ELISA and basophil activation test. RESULTS: IgE antibodies to Can f 6 were found in serum from 38% of dog-sensitized subjects. Sequence similarities between the lipocalin allergens Can f 6, Fel d 4 (cat) and Equ c 1 (horse) suggested a probability for cross-reactivity, which was demonstrated by competitive ELISA. The biological relevance of Can f 6 was confirmed by basophil activation test in dog-allergicpatients. CONCLUSION: Can f 6 is a new lipocalin dog allergen that cross-reacts with lipocalins from horse and cat. Can f 6 and homologous allergens may contribute to multisensitization and symptoms in individuals allergic to mammals.
Authors: Anna Pomés; Janet M Davies; Gabriele Gadermaier; Christiane Hilger; Thomas Holzhauser; Jonas Lidholm; Andreas L Lopata; Geoffrey A Mueller; Andreas Nandy; Christian Radauer; Sanny K Chan; Uta Jappe; Jörg Kleine-Tebbe; Wayne R Thomas; Martin D Chapman; Marianne van Hage; Ronald van Ree; Stefan Vieths; Monika Raulf; Richard E Goodman Journal: Mol Immunol Date: 2018-04-04 Impact factor: 4.407
Authors: Jurgen Herre; Hans Grönlund; Heather Brooks; Lee Hopkins; Lisa Waggoner; Ben Murton; Monique Gangloff; Olaniyi Opaleye; Edwin R Chilvers; Kate Fitzgerald; Nick Gay; Tom Monie; Clare Bryant Journal: J Immunol Date: 2013-07-22 Impact factor: 5.422
Authors: Joana Costa; Caterina Villa; Kitty Verhoeckx; Tanja Cirkovic-Velickovic; Denise Schrama; Paola Roncada; Pedro M Rodrigues; Cristian Piras; Laura Martín-Pedraza; Linda Monaci; Elena Molina; Gabriel Mazzucchelli; Isabel Mafra; Roberta Lupi; Daniel Lozano-Ojalvo; Colette Larré; Julia Klueber; Eva Gelencser; Cristina Bueno-Diaz; Araceli Diaz-Perales; Sara Benedé; Simona Lucia Bavaro; Annette Kuehn; Karin Hoffmann-Sommergruber; Thomas Holzhauser Journal: Clin Rev Allergy Immunol Date: 2021-01-07 Impact factor: 8.667