Manipulation of the helper T cell response to influence antigenic competition occurring with a multivalent vaccine.
Immunol Cell Biol
; 74(1): 81-9, 1996 Feb.
Article
em En
| MEDLINE
| ID: mdl-8934658
ABSTRACT
The reduction in antibody observed following inoculation with multiple heterologous Dichelobacter nodosus pili antigens is thought to be due to competition between antigen-specific B cells for a limited amount of T cell help. We demonstrate here that this competition is not further influenced by the expansion of cross-reactive antibody secreting cells at the expense of serogroup specific antibody secreting cells. The T cell determinants of pili recognized by sheep and BALB/c mice have been defined using 15 residue peptides. These T cell determinants include cross-reactive determinants in the conserved amino terminal region of the antigen. Here we investigate the effect of expanding the pili-specific T cell population by priming with pili derived T cell determinants. It was not possible to increase the antibody elicited in response to the multivalent vaccine by priming mice with either a synthetic peptide spanning a T cell determinant or with reduced and alkylated or heterologous serogroups of pili 4 weeks before inoculation with the multivalent vaccine. A strategy designed to increase the T cell population by inoculating animals with pili covalently coupled to an extrinsic T cell determinant was pursued.
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Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Vacinação
/
Linfócitos T Auxiliares-Indutores
/
Apresentação de Antígeno
/
Bactérias Anaeróbias Gram-Negativas
/
Imunidade Celular
Limite:
Animals
Idioma:
En
Revista:
Immunol Cell Biol
Ano de publicação:
1996
Tipo de documento:
Article