Direct access to CD4+ T cells specific for defined antigens according to CD154 expression.
Nat Med
; 11(10): 1118-24, 2005 Oct.
Article
em En
| MEDLINE
| ID: mdl-16186818
ABSTRACT
The direct assessment of T helper (T(H))-cell responses specific for antigens is essential to evaluate pathogenic and protective immunity. Presently, analysis and isolation of antigen-specific T(H) cells is restricted to cells that produce cytokines, or can be performed only with a rare selection of specific peptide major histocompatibility complex class II (MHC II) multimers. Here we report a new method that enables the assessment and isolation of T(H) cells specific for a defined antigen according to CD154 expression induced after stimulation in vitro. We show that antigen-induced CD154 expression is highly sensitive and specific for human and mouse antigen-specific T(H) cells. Moreover, the isolation of antigen-specific CD154(+) T(H) cells necessitates only surface staining with antibodies, thereby enabling the fast generation of antigen-specific T(H) cell lines. Our approach allows assessment of T(H) cells with a defined specificity for the combined quantitative and qualitative analysis of T(H)-cell immunity as well as for the isolation of specific T(H) cells for targeted cellular immunotherapies.
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Base de dados:
MEDLINE
Assunto principal:
Linfócitos T CD4-Positivos
/
Separação Celular
/
Ligante de CD40
/
Antígenos
Tipo de estudo:
Qualitative_research
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Nat Med
Assunto da revista:
BIOLOGIA MOLECULAR
/
MEDICINA
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Alemanha