RESUMO
Objectives@#To evaluate the immunogenicity of @*Methods@#Protein extracts from @*Results@#Immunization with @*Conclusion@#This is the advanced study to investigate the immunogenicity of
Assuntos
Animais , Feminino , Anticorpos Antibacterianos/imunologia , Antígenos de Bactérias/imunologia , Proteínas de Bactérias/imunologia , Reações Cruzadas , Citocinas/imunologia , Genoma Bacteriano , Imunoglobulina G/imunologia , Imunoglobulina M/imunologia , Macrófagos/imunologia , Camundongos Endogâmicos BALB C , Complexo Mycobacterium avium/imunologia , Mycobacterium tuberculosis/imunologia , Vacinas contra a Tuberculose/administração & dosagem , Sequenciamento Completo do GenomaRESUMO
Currently, killed-virus and modified-live porcine reproductive and respiratory syndrome virus (PRRSV) vaccines are used to control porcine reproductive and respiratory syndrome. However, both types of vaccines have inherent drawbacks; accordingly, the development of novel PRRSV vaccines is urgently needed. Previous studies have suggested that yeast possesses adjuvant activities, and it has been used as an expression vehicle to elicit immune responses to foreign antigens. In this report, recombinant Kluyveromyces lactis expressing GP5 of HP-PRRSV (Yeast-GP5) was generated and immune responses to this construct were analyzed in mice. Intestinal mucosal PRRSV-specific sIgA antibody and higher levels of IFN-gamma in spleen CD4+ and CD8+ T cells were induced by oral administration of Yeast-GP5. Additionally, Yeast-GP5 administered subcutaneously evoked vigorous cell-mediated immunity, and PRRSV-specific lymphocyte proliferation and IFN-gamma secretion were detected in the splenocytes of mice. These results suggest that Yeast-GP5 has the potential for use as a vaccine for PRRSV in the future.