Involvement of tyrosine kinases on cyclooxygenase expression and prostaglandin E2 production in human gingival fibroblasts stimulated with interleukin-1beta and epidermal growth factor.
Biochem Biophys Res Commun
; 257(2): 528-32, 1999 Apr 13.
Article
em En
| MEDLINE
| ID: mdl-10198245
ABSTRACT
The purpose of the present study was to investigate the involvement of cyclooxygenase-1 (COX-1), cyclooxygenase-2 (COX-2), and tyrosine kinase on prostaglandin E2 (PGE2) production in human gingival fibroblasts stimulated by interleukin-1beta (IL-1beta) and/or epidermal growth factor (EGF). The cytokine IL-1beta and to a lesser extent EGF, enhanced COX-2 mRNA levels in gingival fibroblasts. Simultaneous treatment with EGF and IL-1beta resulted in enhanced COX-2 mRNA levels accompanied by a synergistic stimulation of PGE2 biosynthesis compared to the cells treated with IL-1beta or EGF alone. Neither IL-1beta EGF nor the combination of IL-1beta and EGF enhanced COX-1 mRNA levels in gingival fibroblasts. The tyrosine kinase inhibitors, Herbimycin A and PD 153035 hydrochloride, reduced COX-2 mRNA levels as well as PGE2 production induced by IL-1beta or the combination of IL-1beta and EGF whereas COX-1 mRNA levels were not affected. Furthermore, the COX-2 specific inhibitor, NS-398, abolished the PGE2 production induced by IL-1beta, EGF, or the combination. These results indicate that the synergy between IL-1beta and EGF on PGE2 production is due to an enhanced gene expression of COX-2 and that tyrosine kinase(s) are involved in the signal transduction of COX-2 in gingival fibroblasts.
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Base de dados:
MEDLINE
Assunto principal:
Proteínas Tirosina Quinases
/
Dinoprostona
/
Interleucina-1
/
Prostaglandina-Endoperóxido Sintases
/
Fator de Crescimento Epidérmico
/
Gengiva
Limite:
Child
/
Humans
Idioma:
En
Ano de publicação:
1999
Tipo de documento:
Article