Epitope specificity of the major peanut allergen, Ara h II.

Published

Journal Article

The antigenic and allergenic structure of Ara h II, a major allergen of peanuts, was investigated with the use of four monoclonal antibodies obtained from BALB/c mice immunized with purified Ara h II. Our previous studies with monoclonal antibodies generated to peanut allergens showed this method to be useful for epitope mapping. When used as a solid phase in an ELISA, these monoclonal antibodies captured peanut antigen, which bound human IgE from patients with positive peanut challenge responses. The Ara h II monoclonal antibodies were found to be specific for peanut antigens when binding for other legumes was examined. In ELISA inhibition studies with the monoclonal antibodies, we identified two different antigenic sites on Ara h II. In similar studies with pooled human IgE serum from patients with positive challenge responses to peanuts, we identified two closely related IgE-binding epitopes. These characterized monoclonal antibodies to Ara h II will be useful for future studies to immunoaffinity purify the Ara h II allergen and to use in conjunction with recombinant technology for determining structure-function relationships.

Full Text

Cited Authors

  • Burks, AW; Cockrell, G; Connaughton, C; Karpas, A; Helm, RM

Published Date

  • February 1995

Published In

Volume / Issue

  • 95 / 2

Start / End Page

  • 607 - 611

PubMed ID

  • 7531731

Pubmed Central ID

  • 7531731

Electronic International Standard Serial Number (EISSN)

  • 1097-6825

International Standard Serial Number (ISSN)

  • 0091-6749

Digital Object Identifier (DOI)

  • 10.1016/s0091-6749(95)70323-3

Language

  • eng