Co-expression of IL-12 receptors along with CXCR3 and CD25 on activated peripheral blood T lymphocytes.
Cell Immunol
; 236(1-2): 123-30, 2005.
Article
en En
| MEDLINE
| ID: mdl-16165111
ABSTRACT
IL-12 receptors (IL-12R) play a critical role in maintaining IL-12 regulation of T helper-1 (Th1) type immune responses. We studied the expression of two IL-12R, beta1 and beta2 on peripheral blood mononuclear cells (PBMCs) from normal donors, stimulated with polyclonal activators in the presence or absence of exogenous rhIL-12. Unstimulated peripheral blood T lymphocytes (PBTs) expressed moderate levels of IL-12Rbeta1 and very low to undetectable levels of IL-12Rbeta2. Superantigens and anti-CD3+anti-CD28 induced higher expression of both IL-12R on PBTs than PHA-P stimulation. Exogenous rhIL-12 further enhanced the PHA-P or anti-CD3+anti-CD28 induced IL-12Rbeta2 expression. Only a fraction of mitogen activated IL-12Rbeta1+ or beta2+ T lymphocytes co-expressed CD25 (with further enhancement by exogenous rhIL-12), while a higher percentage of these cells were CXCR3+. The majority of superantigen or anti-CD3+anti-CD28-induced IL-12R+ PBTs were positive for both CD25 and CXCR3 markers. Our results indicated differential induction of IL-12R expression that correlated with up regulation of CD25 and CXCR3 expression on activated PBTs and provide a useful insight for monitoring these markers during treatment of Th1 type inflammatory diseases.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Linfocitos T
/
Receptores de Interleucina-2
/
Receptores de Interleucina
/
Receptores de Quimiocina
Límite:
Humans
Idioma:
En
Revista:
Cell Immunol
Año:
2005
Tipo del documento:
Article
País de afiliación:
Estados Unidos