Effect of phorbol-12-myristate-13-acetate on cyclooxygenase-2 expression in human HaCaT keratinocytes / 中华皮肤科杂志
Chinese Journal of Dermatology
; (12): 241-243, 2008.
Artigo
em Chinês
| WPRIM (Pacífico Ocidental)
| ID: wpr-401325
Biblioteca responsável:
WPRO
ABSTRACT
Objective To investigate the effect of phorbol-12-myristate-13-acetate(PMA)on cyclooxygenase-2(COX-2) mRNA and protein expression in cultured human HaCaT keratinocytes,and the mechanism for cytotoxity of PMA against keratinocytes.MethodsRT-PCR and Westem blot were utilized to detect the expression of COX-2 mRNA and protein in cultured HaCaT ells at 24 hours after the treatment with various concentrations of PMA (0.1,1.0,10 mg/L).ResultsWithout any treatment,there was no or a weak expression df COX-2 mRNA and protein in HaCaT cells;incubation witll PMA resulted in the induction of the expression of COX-2 in HaCaT cells.The expression levels of COX-2 mRNA and protein in 10 mg/L PMA-pretreated HaCaT cells were significantly higher than those in 1.0 mg/L PMA-pretreated HaCaT cells,which was in turn higher than that in 0.1 mg/L PMA-pretreated cells and untreated cells;the difrerence was statistically significant (all P<0.01).Conclusion These results suggest that PMA may be involved in keratinocyte tumorigenesis by upregulating he expression of COX-2 as well as synthesis and release of prostaglandin in keratinocytes.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Idioma:
Chinês
Revista:
Chinese Journal of Dermatology
Ano de publicação:
2008
Tipo de documento:
Artigo