Cytokine-mediated differential regulation of macrophage activator protein-1 genes.
Cytokine
; 12(6): 720-6, 2000 Jun.
Article
en En
| MEDLINE
| ID: mdl-10843752
The regulation of macrophage activator protein-1 (AP-1) gene expression by LPS and cytokines is of potentially crucial importance in the pathogenesis of several diseases. The action of LPS and four cytokines on AP-1 gene expression in the murine macrophage J774.2 cell line was, therefore, studied. Exposure of the cells to IL-6 produced no changes in the mRNA levels of all AP-1 members studied. In contrast, the expression of JunB, c-jun and c-fos, but not JunD, was increased by LPS, TNF-alpha, IFN-gamma and IL-1, albeit with different kinetics and magnitude of induction. Electrophoretic mobility shift assays showed a close correlation between the expression of the AP-1 genes and the functional AP-1 DNA binding activity and, additionally, demonstrated the participation of heterodimeric interactions between the different members. These studies provide insights into the potential mechanisms that may be involved in the mediator-specific modulation of AP-1 regulated macrophage gene expression.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Regulación de la Expresión Génica
/
Citocinas
/
Factor de Transcripción AP-1
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Macrófagos
Límite:
Animals
Idioma:
En
Revista:
Cytokine
Asunto de la revista:
ALERGIA E IMUNOLOGIA
Año:
2000
Tipo del documento:
Article
Pais de publicación:
Reino Unido