Proteome Mining for Novel Ige-Binding Proteins from the German Cockroach ( Blattella Germanica) and Allergen Profiling of Patients
Resource
PROTEOMICS v.10 n.21 pp.3854-3867
Journal
PROTEOMICS-CLINICAL APPLICATIONS
Pages
202
Date Issued
2010
Date
2010
Author(s)
CHUANG, JIING-GUANG
SU, SONG-NAN
CHIANG, BOR-LUEN
Abstract
Although cockroaches are known to produce allergens that can cause IgE- mediated hypersensitivity reactions, including perennial rhinitis and asthma, the various cockroach allergens have not yet been fully studied. Many proteins from the German cockroach show high IgE reactivity, but have never been comprehensively characterized. To identify these potential allergens, proteins were separated by 2-DE and IgE-binding proteins were analyzed by nanoLC-MS/MS or N- terminal sequencing analysis. Using a combination of proteomic techniques and bioinformatic allergen database analysis, we identified a total of ten new B. germanica IgE- binding proteins. Of these, aldolase, arginine kinase, enolase, Hsp70, triosephosphate isomerase, and vitellogenin have been reported as allergens in species other than B. germanica. Analysis of the Food Allergy Research and Resource Program allergen database indicated that arginine kinase, enolase, and triosephosphate isomerase showed significant potential cross-reactivity with other related allergens. This study revealed that vitellogenin is an important novel B. germanica allergen. Personalized profiling and reactivity of IgE Abs against the panel of IgE -binding proteins varied between cockroach-allergic individuals. These findings make it possible to monitor the individual IgE reactivity profile of each patient and facilitate personalized immunotherapies for German cockroach allergy disorders.
Subjects
Allergen
Biomedicine
Blattella germanica
Cockroach
IgE-binding protein
Type
journal article