Constructions of Gcn5 shRNAs interfere the histone acetylation modification with stem cell differentiation / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 43-46, 2006.
Artigo
em Chinês
| WPRIM
| ID: wpr-263856
ABSTRACT
<p><b>OBJECTIVE</b>To construct the Gcn5 shRNA plasmids and to explore the Gcn5 shRNA role in histone acetylation modification with the differentiation of stem cells.</p><p><b>METHODS</b>Seven shRNA fragments were recombined into pGenesil-1 vector to form 7. Gcn5 shRNA constructions. The mesenchymal stem cells (MSCs) induced for two weeks with 5-aza were transfected by the plasmids with lipofectamine2000. Polyclonal antibodies labeled with TRITC were used to identify the acetylation in MSCs with or without Gcn5 shRNA constructions. The efficiencies of transfection and RNAi were calculated based on the ratio of GFP (green fluorescence)/DAPI (blue fluorescence) and TRITC (red fluorescence)/DAPI, respectively.</p><p><b>RESULTS</b>Seven Gcn5 shRNA plasmids or constructions were identified by restriction endonucleases Pst I/Sal I and DNA sequencing. Acetylation block was observed after Gcn5 shRNA plasmids transfected into cells. Fluorescent intensity of TRITC in nucleuses were decreased remarkably, or even disappeared in MSCs. The efficiencies of transfection and RNAi were 93.7% and 46.6%, respectively.</p><p><b>CONCLUSION</b>The Gcn5 shRNA plasmids constructed in the present study can decrease the histone acetylation during cell differentiation. It sets the basis for further exploring the role of acetylation in the regulation of cell differentiation.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Farmacologia
/
Fisiologia
/
Plasmídeos
/
Acetilação
/
Células-Tronco
/
Fatores de Transcrição
/
Histonas
/
Diferenciação Celular
/
Ratos Wistar
/
Proteínas de Ciclo Celular
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
Idioma:
Chinês
Revista:
Chinese Journal of Medical Genetics
Ano de publicação:
2006
Tipo de documento:
Artigo
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