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Recombinant multimeric dog allergen prevents airway hyperresponsiveness in a model of asthma marked by vigorous T H 2 and T H 17 cell responses
Author(s) -
Stark Julian M.,
Liu Jielu,
Tibbitt Christopher A.,
Christian Murray,
Ma Junjie,
Wintersand Anna,
Dunst Josefine,
Kreslavsky Taras,
Murrell Ben,
Adner Mikael,
Grönlund Hans,
Gafvelin Guro,
Coquet Jonathan M.
Publication year - 2022
Publication title -
allergy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.363
H-Index - 173
eISSN - 1398-9995
pISSN - 0105-4538
DOI - 10.1111/all.15399
Subject(s) - immunology , house dust mite , allergen , allergy , recombinant dna , medicine , sensitization , asthma , nasal administration , biology , biochemistry , gene
Background Allergy to dogs affects around 10% of the population in developed countries. Immune therapy of allergic patients with dog allergen extracts has shown limited therapeutic benefit. Methods We established a mouse model of dog allergy by repeatedly administering dog dander and epithelium extracts via the intranasal route. We also assessed the efficacy of a recombinant multimeric protein containing Can f 1, f 2, f 4 and f 6 in preventing inflammatory responses to dog extracts. Results Repeated inhalation of dog extracts induced infiltration of the airways by T H 2 cells, eosinophils and goblet cells, reminiscent of the house dust mite (HDM) model of asthma. Dog extracts also induced robust airway hyperresponsiveness and promoted T H 17 cell responses, which was associated with a high neutrophilic infiltration of the airways. scRNA‐Seq analysis of T helper cells in the airways pinpointed a unique gene signature for T H 17 cells. Analysis of T‐cell receptors depicted a high frequency of clones that were shared between T H 17, T H 2 and suppressive Treg cells, indicative of a common differentiation trajectory for these subsets. Importantly, sublingual administration of multimeric Can f 1‐2‐4‐6 protein prior to sensitization reduced airway hyperresponsiveness and type 2‐mediated inflammation in this model. Conclusion Dog allergen extracts induce robust T H 2 and T H 17 cell‐mediated responses in mice. Recombinant Can f 1‐2‐4‐6 can induce tolerance to complex dog allergen extracts.