Expression of vascular smooth muscle cell markers during early stage of embryonic stem cell-derived embryoid bodies differentiation / 中国应用生理学杂志
Chinese Journal of Applied Physiology
; (6): 385-390, 2008.
Artigo
em Chinês
| WPRIM (Pacífico Ocidental)
| ID: wpr-252761
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>AIM</b>To observe expression regularity of SMalpha-actin, SM22alpha, myocardin and SMMHC during early embryonic vascular development, and to initially investigate the differentiation effect of platelet derived growth factor-BB (PDGF-BB) on vascular smooth muscle cells (VSMCs) during that period.</p><p><b>METHODS</b>Murine embryonic stem cell line expressing the enhanced green fluorescent protein (GFP) under the transcriptional control of the smooth-muscle-specific SM22alpha promoter was used to make embryoid bodies,and to analyze the expression regularity of SMalpha-actin, SM22alpha, myocardin and SMMHC by immunofluorescence stainings, RT-PCR and Western blot. Then AG1296 (PDGF receptor inhibitor) 0 micro-mol/L(control group), 10 micromol/L and 50 micromol/L were used to treat EBs respectively in order to analyze the differences of SMa-actin, SM22alpha, myocardin and SMMHC at gene and protein levels among the three groups.</p><p><b>RESULTS</b>SMalpha-actin, myocardin, SM22alpha and SMMHC expression in EBs were found to begin at day 0 (ESCs), 8, 11, 13 respectively during early embryonic vascular development. There were no clear differences in SMa-actin, SM22alpha, myocardin and SMMHC protein expression and SM22alpha, myocardin and SMMHC mRNA level among the three groups of different concentrations of AG1296.</p><p><b>CONCLUSION</b>A spontaneous VSMCs differentiation occurs during EBs development, SMalpha-actin is the first to be detected,the following are myocardin, SM22a and SMMHC. PDGF-BB may not be indispensable for the regulation of expression of VSMCs markers during early EBs differentiation.</p>
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Assunto principal:
RNA Mensageiro
/
Proteínas Nucleares
/
Biomarcadores
/
Diferenciação Celular
/
Transativadores
/
Células Cultivadas
/
Actinas
/
Proteínas Proto-Oncogênicas c-sis
/
Biologia Celular
/
Células-Tronco Embrionárias
Limite:
Animais
Idioma:
Chinês
Revista:
Chinese Journal of Applied Physiology
Ano de publicação:
2008
Tipo de documento:
Artigo