[Effect of PKC signalling pathway and aldose reductase on expression of fibronectin induced by transforming growth factor-ß1 in human mesangial cells].
Zhonghua Bing Li Xue Za Zhi
; 39(6): 405-9, 2010 Jun.
Article
em Zh
| MEDLINE
| ID: mdl-21055159
ABSTRACT
OBJECTIVE:
To study the effect of PKC signalling pathway and aldose reductase (AR) on the expression of fibronectin (FN) induced by transforming growth factor-ß1 (TGF-ß1).METHODS:
Human mesangial cells (HMCs) were cultured and transfected with pcDNA3-AR, and subject to AR gene silencing with small interfering RNA (siRNA) and then the cell was treated with recombinant human TGF-ß1. The AR mRNA expression in the HMCs was examined using real time RT-PCR and protein expression of AR and FN was detected by Western blotting.RESULTS:
The cultured HMC treated with TGF-ß1 showed increased expression of AR and FN, the normal HMC showed not reduced expression of FN after incubation with single inhibitors of AR.Pre-incubation of cells with inhibitors of AR and PKC, then the different groups of cells were treated with TGF-ß1, and the induction effect on FN expression was suppressed (34%) in HMC. HMCs transfected with AR showed a strong protein expression of FN, which was increased by 3.6-fold after treatment with TGF-ß1 (P < 0.05), and the induction effect on FN expression was suppressed by GÖ6983 (42%) in HMCs (P < 0.05). The HMC with AR gene knock-down by siRNA showed a decreased expression of AR and 90% decrease of FN protein in HMCs (P < 0.01), and TGF-ß1-induced up-regulation of FN was significantly suppressed by siRNA (12%) in HMCs (P < 0.01).CONCLUSIONS:
AR is capable of regulating FN expression only in the presence of TGF-ß1, and this reaction is possibly accomplished through the activation of PKC signalling pathway.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteína Quinase C
/
Fibronectinas
/
Aldeído Redutase
/
Células Mesangiais
/
Fator de Crescimento Transformador beta1
Limite:
Humans
Idioma:
Zh
Revista:
Zhonghua Bing Li Xue Za Zhi
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
China