In vitro susceptibility of Thai seronegative donor CD8+ T lymphocytes to human immunodeficiency virus-1 (HIV-1) infection.
Asian Pac J Allergy Immunol
;
2004 Mar; 22(1): 39-48
Artigo
em Inglês
| IMSEAR
| ID: sea-36934
ABSTRACT
To determine whether CD8+ T lymphocytes from Thai donor cells are susceptible to HIV-1 infection, undepleted peripheral blood mononuclear cells (PBMC) and CD8-enriched PBMC were infected with HIV-1 Thai subtype B and CRF01_AE (E) primary isolates. Virus kinetics in HIV-1 infection of CD4+ and CD8+ T lymphocytes peaked at day 7 or 10 post infection (pi); the TCID50 used for cell infection was proportional to the level of p24 production in the cultures. We also found that the level of p24 antigen in the supernatants of infected undepleted PBMC was significantly higher than that of infected CD8-enriched PBMC. Interestingly, both single positive T lymphocytes (CD4+ and CD8+ T lymphocytes) as well as double positive CD4+/CD8+ T lymphocytes were infected with HIV-1. The double positive T lymphocytes in PBMC were found only in the presence of both CD4+ and CD8+ T lymphocytes. The majority of p24+/CD4-/CD8- T lymphocytes were HIV-1 infected CD4 down-modulated PBMC. This report provides direct evidence that single positive CD8+ T lymphocytes and double positive CD4+/ CD8+ T lymphocytes from Thai donors can be infected with HIV-1 subtypes B and E in vitro.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Tailândia
/
Humanos
/
Infecções por HIV
/
HIV-1
/
Proteína do Núcleo p24 do HIV
/
Soronegatividade para HIV
País/Região como assunto:
Ásia
Idioma:
Inglês
Revista:
Asian Pac J Allergy Immunol
Ano de publicação:
2004
Tipo de documento:
Artigo
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