IL-12-mediated increases in protection elicited by pneumococcal and meningococcal conjugate vaccines.
Vaccine
; 19(15-16): 2020-8, 2001 Feb 28.
Article
en En
| MEDLINE
| ID: mdl-11228373
Interleukin-12 (IL-12) may be a beneficial adjuvant for augmenting vaccine efficacy against encapsulated bacteria such as Streptococcus pneumoniae and Neisseria meningitidis since it can stimulate production of interferon-gamma (IFN-gamma) and secretion of antibody isotypes that are efficient at mediating complement fixation and opsonophagocytosis. In this study, we demonstrate the ability of IL-12 to enhance murine antibody responses, particularly IgG2a levels, to both pneumococcal and meningococcal conjugate vaccines. Transfer of immune serum from mice immunized with the meningococcal conjugate vaccine and IL-12 resulted in increased survival times, whereas transfer of serum from mice immunized with the pneumococcal conjugate and IL-12 resulted in protection from death upon bacterial challenge. Although treatment with vaccine and IL-12 increased levels of IFN-gamma mRNA, IL-12-mediated enhancement of antibody responses still occurred in IFN-gamma(-/-) mice. The results demonstrate the effectiveness of IL-12 as an adjuvant for polysaccharide conjugate vaccines, especially the pneumococcal conjugate vaccine.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Interleucina-12
/
Vacunas Meningococicas
/
Vacunas Neumococicas
Límite:
Animals
Idioma:
En
Revista:
Vaccine
Año:
2001
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Países Bajos