Antigenicity and immunogenicity of P30-derived peptides in experimental models of toxoplasmosis.
Mol Immunol
; 31(17): 1353-63, 1994 Dec.
Article
em En
| MEDLINE
| ID: mdl-7997247
ABSTRACT
P30, also referred to as SAG-1, is now recognized as a major Toxoplasma gondii antigen potentially important for both diagnosis and immunoprophylaxis of toxoplasmosis. By using predictive algorithms, five synthetic peptides (48-67, 82-102, 213-230, 238-256 and 279-285) derived from P30, were investigated for B- and T-cell determinants in mouse and rat experimental models. Antibody recognition appeared more broadly distributed along the P30 sequence, whereas T-cell recognition was mainly targeted on the 238-256 peptide. In the absence of any carrier protein, this peptide induced a B- and T-cell immune response independent of the route of immunization (oral route or subcutaneous injection). This peptide (238-256) induced multiple antibody isotypes. In contrast with the 238-256 peptide, the 48-67 peptide, either free or in the form of a multiple antigenic peptide (MAP) construct or the 279-295 peptide, elicited antibodies associated with a TH2 response. This study reports for the first time the analysis of the antigenic and immunogenic properties of P30-derived peptides and are potentially useful for vaccinal strategies incorporating the P30 Toxoplasma gondii antigen.
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Base de dados:
MEDLINE
Assunto principal:
Toxoplasma
/
Proteínas de Protozoários
/
Toxoplasmose Animal
/
Antígenos de Protozoários
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Mol Immunol
Ano de publicação:
1994
Tipo de documento:
Article
País de afiliação:
França