A CFSE-based assay of proliferative response of lymphocytes to stimulation with dengue viruses.
Acta Virol
; 53(3): 147-52, 2009.
Article
em En
| MEDLINE
| ID: mdl-19941395
Dengue viruses (DENVs) are human pathogens that constitute a significant threat worldwide. Since they up-regulate MHC class I molecules; the cell-mediated immunity may play an important role in the defense against viruses. In this work, we tested a CFSE-based assay in determining proliferative response of lymphocytes isolated from mice or monkeys previously immunized with various DENV antigens to in vitro stimulation with DENVs. A positive proliferative response was obtained with lymphocytes of animals immunized with either live DENV-2 or its recombinant proteins. A similar result was also obtained with CD8+ T cells from mice immunized with live DENV-1 or DENV-2 following stimulation with homologous viruses. A comparison of the carboxyfluorescein diacetate succinimidyl ester (CFSE)-based and a 3H-thymidine incorporation-based assays of proliferative response of total lymphocytes showed a fair correlation of results of both assays. However, the CSFE-based assay offers in addition the determination of contribution of the CD8+ or other subsets of T cells to total proliferative response. These results represent the first and successful application of a CFSE-based assay to the evaluation of cell-mediated immunity to DENVs. This assay might be also exploited in testing candidate DENV vaccines.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Succinimidas
/
Ativação Linfocitária
/
Vírus da Dengue
/
Fluoresceínas
Limite:
Animals
Idioma:
En
Revista:
Acta Virol
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Cuba
País de publicação:
Eslováquia