Huang Q, Coleman JW, Stanworth DR. Investigation of the allergenicity of beta-lactoglobulin and its cleavage fragments.
INTERNATIONAL ARCHIVES OF ALLERGY AND APPLIED IMMUNOLOGY 1985;
78:337-44. [PMID:
2415460 DOI:
10.1159/000233910]
[Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Fragments of beta-lactoglobulin were produced by proteolytic cleavage with trypsin, and chemical cleavage with cyanogen bromide, followed by gel filtration on Sephadex G-50. The antigenicity and allergenicity of the products were studied, before and after reductive cleavage by treatment with 2-mercaptoethanol. The former was determined by inhibition ELISA using IgG anti-beta-lactoglobulin raised in rabbits, whilst the latter was determined by inhibition ELISA and mast cell challenge, using respectively the sera and peritoneal cells of rats experimentally sensitised to beta-lactoglobulin. The findings raise interesting points about the structural basis of allergenicity in relation to antigenicity.
Collapse