Improved protection against Venezuelan equine encephalitis by genetic engineering of a recombinant vaccinia virus
Viral Immunol
; 11(3): 109-17, 1998.
Artigo
em Inglês
| MedCarib
| ID: med-1333
Biblioteca responsável:
JM3.1
Localização: JM3.1;
ABSTRACT
An improved vaccine is needed against Venezuelan equine encephalitis (VEE) virus because the existing live attenuated vaccine, TC-83, causes a high incidence of adverse effects, and the Formalin-inactivated vaccine, C-84, does not protect against airborne infection. A recombinant vaccine had previously been constructed in which the VEE structural proteins were expressed by vaccinia virus. Although protection against subcutaneous challenge with VEE was achieved, the vaccine had limited efficacy against aerosolized virus. We made a similar construct (WR100) and compared its performance as a vaccine a synthetic promoter was inserted upstream of the VEE coding sequence to increase the amount of VEE proteins produced, and a single nucleotide in the E2 glycoprotein gene was altered to enhance immunogenicity. The WR103 virus expressed greater amounts of VEE proteins on the surface of infected cells than did WR100, and this difference was production. Sera from mice immunized with WR103 contained elevated levels of antibody to VEE, and enhanced protection against subcutaneous challenge with the pathogenic Trinidad donkey strain was achieved. This altered construct could form the basis for a better vaccine against VEE.(Au)
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Coleções:
Bases de dados internacionais
Contexto em Saúde:
ODS3 - Saúde e Bem-Estar
/
ODS3 - Meta 3.3 Acabar com as doenças tropicais negligenciadas e combater as doenças transmissíveis
Problema de saúde:
Meta 3.3: Acabar com as doenças tropicais negligenciadas e combater as doenças transmissíveis
/
Varíola
Base de dados:
MedCarib
Assunto principal:
Vacinas Virais
/
Vacinas Sintéticas
/
Vírus da Encefalite Equina Venezuelana
/
Encefalomielite Equina Venezuelana
/
Anticorpos Antivirais
País/Região como assunto:
América do Sul
/
Venezuela
Idioma:
Inglês
Revista:
Viral Immunol
Ano de publicação:
1998
Tipo de documento:
Artigo