IL-1beta Mediated COX-2 Expression in Human Airway Epithelial Cells / 대한이비인후과학회지
Korean Journal of Otolaryngology - Head and Neck Surgery
; : 132-136, 2002.
Artigo
em Coreano
| WPRIM (Pacífico Ocidental)
| ID: wpr-653836
Biblioteca responsável:
WPRO
ABSTRACT
BACKGROUND AND OBJECTIVES:
Prostaglandin is one of the important inflammatory mediator in inflammatory diseases. Cyclooxygenase-2 (COX-2) plays a key role in biosynthesis of prostaglandins. In this study, we aimed to investigate COX-2 expression and prostaglandin E2 (PGE2) production by interleukin-1beta (IL-1beta) in cultured human airway epithelial cells. MATERIALS ANDMETHOD:
COX-2 gene expression, and COX-2 protein, PGE2 production by IL-1beta were analyzed by RT-PCR, Western blot, and enzymeimmunoassay (EIA) in cultured human airway NCI-H292 epithelial cells.RESULTS:
The COX-2 protein production was increased when the cells were exposed to IL-1beta in a dose dependent manner. The maximum level of COX-2 protein was detected at 20 ng/ml of IL-1beta. After 4 hours, the production of COX-2 protein was detected by IL-1beta(20 ng/ml) and this was held up to 12 hour. The maximum level of COX-2 protein production reached at 8 hour of exposure to IL-1beta and this was held up to 12 hour. The release of PGE2 occurred in the same pattern as the IL-1beta-mediated COX-2 protein production. The COX-2 gene expression was induced by IL-1beta (20 ng/ml). The IL-1beta-mediated COX-2 expression was suppressed by actinomycin D, but was not affected by cycloheximide.CONCLUSION:
These results suggest that the IL-1beta-mediated COX-2 expression and the PGE2 production were increased in dose and time dependent manner and regulated in the transcriptional step.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
Dinoprostona
/
Expressão Gênica
/
Prostaglandinas
/
Western Blotting
/
Cicloeximida
/
Dactinomicina
/
Prostaglandinas I
/
Células Epiteliais
/
Ciclo-Oxigenase 2
/
Interleucina-1beta
Limite:
Humanos
Idioma:
Coreano
Revista:
Korean Journal of Otolaryngology - Head and Neck Surgery
Ano de publicação:
2002
Tipo de documento:
Artigo