Simvastatin inhibits sphingosylphosphorylcholine-induced differentiation of human mesenchymal stem cells into smooth muscle cells
Experimental & Molecular Medicine
;
: 159-166, 2012.
Article
Dans Anglais
| WPRIM
| ID: wpr-93414
ABSTRACT
Sphingosylphosphorylcholine (SPC) induces differentiation of human adipose tissue-derived mesenchymal stem cells (hASCs) into smooth muscle-like cells expressing alpha-smooth muscle actin (alpha-SMA) via transforming growth factor-beta1/Smad2- and RhoA/Rho kinase-dependent mechanisms. 3-Hydroxy-3-methylglutaryl-coenzyme A reductase inhibitors (statins) have been known to have beneficial effects in the treatment of cardiovascular diseases. In the present study, we examined the effects of simvastatin on the SPC-induced alpha-SMA expression and Smad2 phosphorylation in hASCs. Simvastatin inhibited the SPC-induced alpha-SMA expression and sustained phosphorylation of Smad2 in hASCs. SPC treatment caused RhoA activation via a simvastatin-sensitive mechanism. The SPC-induced alpha-SMA expression and Smad2 phosphorylation were abrogated by pretreatment of the cells with the Rho kinase inhibitor Y27632 or overexpression of a dominant negative RhoA mutant. Furthermore, SPC induced secretion of TGF-beta1 and pretreatment with either Y27632 or simvastatin inhibited the SPC-induced TGF-beta1 secretion. These results suggest that simvastatin inhibits SPC-induced differentiation of hASCs into smooth muscle cells by attenuating the RhoA/Rho kinase-dependent activation of autocrine TGF-beta1/Smad2 signaling pathway.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Phosphoryl-choline
/
Pyridines
/
Sphingosine
/
Test ELISA
/
Immunohistochimie
/
Différenciation cellulaire
/
Cellules cultivées
/
Technique de Western
/
Simvastatine
/
Protéine G RhoA
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
Experimental & Molecular Medicine
Année:
2012
Type:
Article
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