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Titolo:
ALLERGENIC AND ANTI-GENIC DETERMINANTS OF LATEX ALLERGEN HEV-B-1 - PEPTIDE-MAPPING OF EPITOPES RECOGNIZED BY HUMAN, MURINE AND RABBIT ANTIBODIES
Autore:
CHEN Z; VANKAMPEN V; RAULFHEIMSOTH M; BAUR X;
Indirizzi:
BGFA,RES INST OCCUPAT MED,BUERKLE DE LA CAMP PL 1 D-44789 BOCHUM GERMANY RUHR UNIV BOCHUM W-4630 BOCHUM GERMANY
Titolo Testata:
Clinical and experimental allergy
fascicolo: 4, volume: 26, anno: 1996,
pagine: 406 - 415
SICI:
0954-7894(1996)26:4<406:AAADOL>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
RUBBER ELONGATION-FACTOR; SPINA-BIFIDA; BRASILIENSIS; IGE; PREVALENCE; CHILDREN; SEQUENCE;
Keywords:
LATEX ALLERGY; HEV B 1; B-CELL EPITOPE; IGE; MONOCLONAL ANTIBODIES; BIOTINYLATED PEPTIDES; RUBBER ELONGATION FACTOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
Z. Chen et al., "ALLERGENIC AND ANTI-GENIC DETERMINANTS OF LATEX ALLERGEN HEV-B-1 - PEPTIDE-MAPPING OF EPITOPES RECOGNIZED BY HUMAN, MURINE AND RABBIT ANTIBODIES", Clinical and experimental allergy, 26(4), 1996, pp. 406-415

Abstract

Background The rubber elongation factor in Hevea rubber (Hev b 1) is one of the most important latex allergen and is leading cause of latextype 1 hypersensitivity in children with spina bifida. Objective The aim of this study was to define the allergenic and antigenic epitopes of Hev b 1. Methods The immunoglobulin- (Ig)E and IgG antibody bindingsites on Hev b 1 allergen were delineated by enzyme linked immunosorbent assay (ELISA) using synthetic overlapping peptides covering the whole Hev b 1 sequence. In order to improve the binding capacity and specificity all peptides were biotinylated at the N-terminal end via a 6-aminohexanoic acid as spacer and then adsorbed to streptavidin pre-coated microtitre plates, Fine mapping to define the essential amino acidresidues for the antibody binding was achieved by using overlapping peptides with one amino acid offset. Results It was demonstrated that the IgE epitopes were located in different regions of Hev b 1 includingthe C-terminal segment (121-137) and the segments with amino acid residues of 30-49 and 46-64, Two monoclonal antibodies (MoAbs) II2F3 and II4G9 raised against purified Hev b 1 recognized the C-terminal segment only. The results of epitope mapping with three rabbit antisera revealed that five positive peptides, including the epitope peptides 31-49, 46-64 and 121-137, were involved in the antibody-binding sites, Finemapping on the segments 46-64 and 121-137 showed that the two MoAbs reacted with the peptide 125-134 in the C-terminal region, whereas the peptide with amino acids 124-134 was essential for recognition by human IgE antibodies. Epitopes to rabbit polyclonal IgG and human IgE werealso found to be involved in the amino acid residues of 47-59. Conclusion Our results indicate that the most allergenic/antigenic portions of Hev b 1 allergen are the C-terminal region and the region with amino acid residues of 31-64. In both regions, the minimal IgE-binding epitope is almost identical with the IgG-binding epitope.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 07:59:41