AP-1 regulates TGF-beta1-induced secretion of Type I collagen in human lung fibroblasts / 中南大学学报(医学版)
Journal of Central South University(Medical Sciences)
;
(12): 776-781, 2007.
Artigo
em Chinês
| WPRIM
| ID: wpr-813800
ABSTRACT
OBJECTIVE@#To investigate the role of AP-1 in the secretion of Type I collagen in TGF-beta1-stimulated human lung fibroblasts.@*METHODS@#Human lung fibroblasts cell line (HLF-02) was cultured, and then stimulated with 10 microg/L TGF-beta1 at different time points. Curcumin was added into the culture medium to inhibit the AP-1 activity before incubating with TGF-beta1. AP-1 DNA binding activity was assayed by electrophoretic mobility shift assay (EMSA), and the expression of Type I collagen was detected by Western blot and RT-PCR.@*RESULTS@#TGF-beta1 could induce the transcription and secretion of Type I collagen in HLF-02 cells(P<0.05). TGF-beta1 could upregulate the AP-1 DNA binding activity ( P<0.05). Curcumin ( 5, 10, 15, and 20 micromol/L) could inhibit the AP-1 DNA binding activity in TGF-beta1-stimulated cells (the inhibition ratio was 17.1%, 17.6%, 24.2%, and 31.3%; P<0.05). Curcumin (5, 10, 15, and 20 micromol/L) could also inhibit the secretion of Type I collagen significantly (the inhibition ratio was 62.1%, 58.8%, 62.1%, and 59.6%; P<0.05).@*CONCLUSION@#AP-1 is responsible for the secretion of TGF-beta1-induced Type I collagen in human lung fibroblasts.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Farmacologia
/
Transdução de Sinais
/
Linhagem Celular
/
Fator de Transcrição AP-1
/
Biologia Celular
/
Colágeno Tipo I
/
Fator de Crescimento Transformador beta1
/
Fibroblastos
/
Pulmão
/
Metabolismo
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Central South University(Medical Sciences)
Ano de publicação:
2007
Tipo de documento:
Artigo
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