Improvement of the sensitivity of the detection of Gal d 6-specific IgE via biotinylation in vivo
Allergol. immunopatol
; 48(4): 348-354, jul.-ago. 2020. tab, graf, ilus
Artigo
em Inglês
| IBECS
| ID: ibc-199719
Biblioteca responsável:
ES1.1
Localização: BNCS
ABSTRACT
INTRODUCTION AND OBJECTIVES:
This study aimed to compare the effects of different biotinylation methods on the performance characteristics of allergen-specific IgE detection. MATERIALS ANDMETHODS:
The Gal d 6 gene was cloned into the pAN6/pAC6 vector, resulting in rGal d 6-Bio/Bio-rGal d 6 vector. The fusion protein was expressed in Escherichia coli AVB101 and simultaneously biotinylated in a site-specific manner. The Gal d 6 gene was amplified via PCR and cloned into the pET-28a vector and transformed into E. coli BL21 and purified via Ni-NTA, followed by chemical biotinylation using Sulfo-NHS-LC-Biotin. Twenty-eight patients allergic to hen's egg white were examined for sensitization against egg yolk. An antigen-capture enzyme-linked immunosorbent assay (AC-ELISA) was developed to detect allergen-specific IgE.RESULTS:
rGal d 6, Bio-rGal d 6, and rGal d 6 were prepared using different biotin binding modes to detect allergen-specific IgE. rGal d 6-Bio (Kd = 0.6154) and Bio-rGal d 6 (Kd = 0.6698) had a markedly better detection performance than rGal d 6 (Kd = 28.93), and the rGal d 6-Bio had a better detection performance in small-volume serum samples.CONCLUSIONS:
rGal d 6-Bio improved the sensitivity for the detection of allergen-specific IgERESUMEN
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Coleções:
Bases de dados nacionais
/
Espanha
Base de dados:
IBECS
Assunto principal:
Biotinilação
/
Hipersensibilidade Alimentar
/
Hipersensibilidade Imediata
/
Anafilaxia
Limite:
Adolescente
/
Adulto
/
Criança
/
Criança, pré-escolar
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Allergol. immunopatol
Ano de publicação:
2020
Tipo de documento:
Artigo
Instituição/País de afiliação:
Academy of Traditional Chinese Medicine Affiliated Hospital/China
/
Tianjin Children's Hospital/China
/
Tianjin Medical University/China
/
Tianjin Nankai Hospital/China