Table of Contents
International Journal of Proteomics
Volume 2011, Article ID 673618, 13 pages
Research Article

Proteomic Approach to Evaluate Mechanisms That Contribute to Food Allergenicity: Comparative 2D-DIGE Analysis of Radioallergosorbent Test Positive and Negative Patients

Division of Allergy, Immunology, and Rheumatology, Department of Medicine, University at Buffalo, 640 Ellicott Street, Room 444 Innovation Center, Buffalo Niagara Medical Campus, 640 Ellicott Street, Buffalo, NY 14203, USA

Received 7 June 2011; Accepted 14 July 2011

Academic Editor: S. Komatsu

Copyright © 2011 Bindukumar Nair et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Proteomic profiles of RAST+ subjects with severe food allergies and RAST subjects were compared using 2D-DIGE analysis to obtain candidate biomarkers specific to food allergies. Our analysis highlighted 52 proteins that were differentially expressed between the RAST+ and RAST groups of which 37 were successfully identified that include chondroitin sulfates, zinc finger proteins, C-type lectins, retinoic acid binding proteins, heat shock proteins, myosin, cytokines, mast cell expressed proteins, and MAP kinases. Biological network analysis tool Metacore revealed that most of these regulated proteins play a role in immune tolerance, hypersensitivity and modulate cytokine patterns inducing a Th2 response that typically results in IgE-mediated allergic response which has a direct or indirect biological link to food allergy. Identifying unique biomarkers associated with certain allergic phenotypes and potentially cross-reactive proteins through bioinformatics analyses will provide enormous insight into the mechanisms that underlie allergic response in patients with food allergies.