Conformation-dependent antibody response to Pseudomonas aeruginosa outer membrane proteins induced by immunization in humans.
FEMS Immunol Med Microbiol
; 27(1): 79-85, 2000 Jan.
Article
em En
| MEDLINE
| ID: mdl-10617794
ABSTRACT
Outer membrane proteins (OMPs) of pathogenic bacteria have been used as protective antigens in developing bacterial vaccines. In the present study, we compared the antibody responses to a Pseudomonas aeruginosa OMP vaccine elicited in humans and rabbits by immunization. Immunization with the vaccine induced high titers of serum IgG antibody both in rabbits and humans but reactivities of the induced antibodies with the OMPs were different. The rabbit immune sera recognized most of the OMPs in the vaccine both in immunoblot and immunoprecipitation analyses. In contrast, a great variation in band pattern and intensity was observed among the human immune sera in immunoblot analysis, but not in immunoprecipitation analysis. Denaturation of the OMPs did not affect the binding activity of the rabbit immune sera as determined by ELISA, but substantially reduced those of the human immune sera and anti-OMP IgG purified from a pooled normal human plasma. These data suggest that antibody response to P. aeruginosa OMPs elicited by immunization in humans is mainly directed against discontinuous or conformation-dependent epitopes, which should be taken into account in developing vaccines, especially for OMP-derived synthetic peptides.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pseudomonas aeruginosa
/
Proteínas da Membrana Bacteriana Externa
/
Vacinas Bacterianas
/
Anticorpos Antibacterianos
Limite:
Animals
/
Humans
/
Male
Idioma:
En
Revista:
FEMS Immunol Med Microbiol
Assunto da revista:
ALERGIA E IMUNOLOGIA
/
DOENCAS TRANSMISSIVEIS
/
MICROBIOLOGIA
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Coréia do Sul