Factors affecting the presentation of exogenous hepatitis B virus core antigen.
Indian J Exp Biol
;
2007 Aug; 45(8): 689-95
Artigo
em Inglês
| IMSEAR
| ID: sea-62768
ABSTRACT
Hepatitis B virus core antigen (HBcAg) plays a critical role in terminating acute Hepatitis B virus infection and may be used as a potential vaccine candidate. The cell surface major histocompatibility complex (MHC) class 1 molecules are thought to be involved in the presentation of HBcAg. Surface MHC class 1 HLA A2 heavy chain (HC) and trimeric molecules were characterized on transfected Hela cells used as antigen presenting cells (APC) for the presentation of HBcAg. The results show that antibodies against HC HLA A2 and trimeric HLA-A2 molecules resulted in increased activation of HBcAg 18-27 minimal peptide specific cytotoxic T lymphocytes (CTLs), while the addition of exogenous beta2-microglobulin decreased the activation of HBcAg specific CTLs. Further, specific CD8+ T cells were activated only when Hela cells as APCs were primed with HBcAg (peptide, soluble or embedded on virosomes) at pH 6.5.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Peptídeos
/
Humanos
/
Células HeLa
/
Ativação Linfocitária
/
Linfócitos T Citotóxicos
/
Antígeno HLA-A2
/
Microglobulina beta-2
/
Apresentação de Antígeno
/
Anticorpos Anti-Hepatite B
/
Antígenos do Núcleo do Vírus da Hepatite B
Idioma:
Inglês
Revista:
Indian J Exp Biol
Ano de publicação:
2007
Tipo de documento:
Artigo
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