Esculetin promotes type I procollagen expression in human dermal fibroblasts through MAPK and PI3K/Akt pathways.
Mol Cell Biochem
; 368(1-2): 61-7, 2012 Sep.
Article
em En
| MEDLINE
| ID: mdl-22581442
ABSTRACT
Type I collagen is the major constituent of the skin and the reduction of dermal type I collagen content is closely associated with the intrinsic skin aging. We here found that esculetin, 6,7-dihydroxycoumarin, strongly induces type I procollagen expression in human dermal fibroblasts. Esculetin not only increased protein levels of type I procollagen but also increased mRNA levels of COL1A1 but not COL1A2. Esculetin activated the MAPKs (ERK1/2, p38, JNK) and PI3K/Akt pathways, through which it promoted the type I procollagen expression. We also demonstrated that the binding motifs for transcription factor Sp1 occur with the highest frequency in the COL1A1 promoter and that esculetin increases the Sp1 expression through the MAPK and PI3K/Akt pathways. These results suggest that esculetin promotes type I procollagen expression through the MAPK and PI3K/Akt pathways and that Sp1 might be involved in the esculetin-induced type I procollagen expression via activation of the COL1A1 transcription.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Umbeliferonas
/
Ativação Transcricional
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Fosfatidilinositol 3-Quinases
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Derme
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Sistema de Sinalização das MAP Quinases
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Colágeno Tipo I
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MAP Quinases Reguladas por Sinal Extracelular
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Proteínas Proto-Oncogênicas c-akt
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Fibroblastos
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Antioxidantes
Limite:
Humans
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article