Your browser doesn't support javascript.
loading
Protection induced by pneumococcal surface protein A (PspA) is enhanced by conjugation to a Streptococcus pneumoniae capsular polysaccharide
Csordas, Fátima CL; Perciani, Cátia T; Darrieux, Michelle; Gonçalves, Viviane M; Crespo, Joaquim Cabrera; Takagi, Mickie; Almeida, Maria E Sbrogio; Leite, Luciana CC; Tanizaki, Martha M.
Afiliación
  • Csordas, Fátima CL; Instituto Butantan. São Paulo. BR
  • Perciani, Cátia T; Instituto Butantan. São Paulo. BR
  • Darrieux, Michelle; Instituto Butantan. São Paulo. BR
  • Gonçalves, Viviane M; Instituto Butantan. São Paulo. BR
  • Crespo, Joaquim Cabrera; Instituto Butantan. São Paulo. BR
  • Takagi, Mickie; Instituto Butantan. São Paulo. BR
  • Almeida, Maria E Sbrogio; Instituto Butantan. São Paulo. BR
  • Leite, Luciana CC; Instituto Butantan. São Paulo. BR
  • Tanizaki, Martha M; Instituto Butantan. São Paulo. BR
Vaccine ; 26(23): 2925-2929, 2008.
Article en En | SES-SP, SESSP-IBPROD, SES-SP, SESSP-IBACERVO | ID: biblio-1068342
Biblioteca responsable: BR78.1
Ubicación: BR78.1
ABSTRACT
The currently available anti-pneumococcal vaccines are based on capsular polysaccharide (PS), plain or conjugated to a carrier protein. Conjugated vaccines are expensive products, especially in the case of pneumococcus, in which reasonable coverage requires from 7 to 13 serotypes. To obtain increased coverage with fewer components, we evaluated the immunogenicity of the pneumococcal surface protein A (PspA), conjugated to capsular polysaccharide serotype 23F, aiming at induction of an immune response against both components. Mice immunized with PS23F-rPspA1 conjugate produced antibodies against both PS and rPspA1, comparable or slightly higher than that obtained by free PS. The immunized animals challenged with a lethal dose of a virulent strain bearing a homologous PspA, showed that the PS23F-rPspA1 conjugate induced higher survival than rPspA1 alone or in combination with PS. This increased protection was shown to correlate with the enhanced capacity of the antibodies to bind to the pneumococcal surface and to induce complement deposition. Our results indicate that the use of PS-PspA conjugates may be a way to increase coverage against pneumococci with fewer components.
Asunto(s)
Buscar en Google
Añadir a Mi BVS
Imprimir
XML
Colección: 06-national / BR Base de datos: SES-SP / SESSP-IBACERVO / SESSP-IBPROD Asunto principal: Streptococcus pneumoniae / Vacunas Conjugadas Límite: Humans Idioma: En Revista: Vaccine Año: 2008 Tipo del documento: Article
Buscar en Google
Añadir a Mi BVS
Imprimir
XML
Colección: 06-national / BR Base de datos: SES-SP / SESSP-IBACERVO / SESSP-IBPROD Asunto principal: Streptococcus pneumoniae / Vacunas Conjugadas Límite: Humans Idioma: En Revista: Vaccine Año: 2008 Tipo del documento: Article