Roles of the ERK1/2 and PI3K/PKB signaling pathways in regulating the expression of extracellular matrix genes in rat pulmonary artery smooth muscle cells
Acta cir. bras
; Acta cir. bras;32(5): 350-358, May 2017. tab, graf
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BR1.1
ABSTRACT
Abstract Purpose:
To investigate the mechanisms by which PD98059 and LY294002 interfere with the abnormal deposition of extracellular matrix regulated by connective tissue growth factor (CTGF) of rat pulmonary artery smooth muscle cells (PASMCs).Methods:
Rat PASMCs were cultured and separated into a control group. Real-time fluorescence quantitative PCR was performed to detect the expression of collagen III and fibronectin mRNA. Immunohistochemistry and western blot analyses were performed to detect the expression of collagen III protein.Results:
The expression of collagen III and fibronectin mRNA was greater in PASMCs stimulated with CTGF for 48 h, than in the control group. After 72h of stimulation, the expression of collagen III protein in the PASMCs was greater than in the control. The equivalent gene and protein expression of the CPL group were much more significant.Conclusions:
CTGF can stimulate the gene expression of collagen III and fibronectin in PASMCs, which may be one of the factors that promote pulmonary vascular remodeling (PVR) under the conditions of pulmonary arterial hypertension (PAH). PD98059 and LY294002 can inhibit the ERK1/2 and PI3K/PKB signaling pathways, respectively, thus interfering with the biological effects of CTGF. This may be a new way to reduce PAH-PVR.Palabras clave
Texto completo:
1
Índice:
LILACS
Asunto principal:
Flavonoides
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Cromonas
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Fibronectinas
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Sistema de Señalización de MAP Quinasas
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Colágeno Tipo III
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Factor de Crecimiento del Tejido Conjuntivo
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Acta cir. bras
Asunto de la revista:
Cirurgia Geral
/
Procedimentos Cir£rgicos Operat¢rios
Año:
2017
Tipo del documento:
Article