ArticleFrontiers in immunology2025
Characterization of the clinical relevance and hypoallergenic peptides of the newly evidenced major allergen Hum j 1.
Article in Frontiers in immunology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Methods: Serum samples from 93 HJ pollen-allergic patients were analyzed for IgE reactivity against recombinant Hum j 1 (rHum j 1). We evaluated correlations between IgE responses to rHum j 1 and HJ pollen crude extracts using Spearman's rank correlation analysis. The association between clinical symptoms and Hum j 1-IgE positivity was evaluated by group comparisons and multivariable analyses. Allergenicity of Hum j 1 was further investigated by immunoblotting and basophil activation tests. Six KLH-coupled peptides (21-25 amino acids) spanning the complete Hum j 1 sequence were synthesized to assess hypoallergenicity and IgG-mediated inhibitory effects against allergen-specific IgE binding using a murine passive immunization model. Results: rHum j 1 demonstrated IgE reactivity in 74.2% (69/93) of the patients and induced significant basophil activation. rHum j 1-specific IgE levels showed a moderate positive correlation with crude extract-specific IgE levels (Spearman's ρ = 0.529, Conclusions: Hum j 1 could enhance the sensitivity of HJ pollen crude extract-based IgE assays. IgE reactivity to Hum j 1 was more frequently associated with allergic asthma. The hypoallergenic linear peptides of Hum j 1 laid the foundation for the development of a molecular vaccine for allergen-specific immunotherapy. These findings would contribute to developing diagnostic and therapeutic strategies for HJ pollinosis.
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