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Release date：2018-11-26

Clin Exp Allergy

[IF:5.158]

Immunological characterization of a Blo t 12 isoallergen: identification of immunoglobulin E epitopes
https://doi.org/10.1111/j.1365-2222.2008.03193.
Abstract:
Background
Differences in the IgE response to isoallergens could have clinical implications; therefore, its analysis will contribute to the design of better strategies for the diagnosis and treatment of allergic respiratory diseases. Several isoforms have been described from mites but there is no information about the clinical impact of Blomia tropicalis isoallergens.
Objective To evaluate the differences in the IgE response against two Blo t 12 isoallergens.
Methods The IgE‐binding properties of Blo t 12 isoallergens were analysed by ELISA, a skin prick test and ELISA cross‐inhibition. Epitope mapping was performed using synthetic overlapping peptides. Fold recognition methods were used to model the chitin‐binding domain of the two isoallergens. Results The frequency and strength of the IgE response were greater for Blo t 12.0101 than for Blo t 12.0102. Three IgE‐binding areas were identified in Blo t 12.0101; one of them included two residues that are different in Blo t 12.0102. Modelling of the chitin‐binding domains of these allergens predicted that they have structural differences that could influence antibody recognition of one of these epitopes. Conclusion In silico structural analysis and immunological characterization of Blo t 12 reveals that allergen polymorphism influences IgE reactivity. Blo t 12.0101 is the most IgE‐reactive isoform in Cartagena. The identified IgE epitopes could be mutated to obtain hypoallergenic molecules of potential use for immunotherapy.
All Authors:
J. Zakzuk S. Jiménez N. Cheong L. Puerta B. W. Lee K. Y. Chua L. Caraballo

2018-10-24 Article

Hangzhou Zheda Dixun Biological Gene Engineering Co., Ltd. Copyright HZKC Technical support 浙ICP備14005341號(hào) （浙）-非經(jīng)營性-2019-0050

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Release date：2018-11-26

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杭州浙大迪迅生物基因工程有限公司

Release date：2018-11-26

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