Bone marrow mesenchymal stem cells differentiation into cardiomyocyte-like cells induced by 5-azacytidine and astragaloside Ⅳ / 中国组织工程研究
Chinese Journal of Tissue Engineering Research
;
(53): 1861-1865, 2012.
Article
in Chinese
| WPRIM
| ID: wpr-423963
ABSTRACT
BACKGROUND:
5-azacytidine (5-Aza) has been frequently used to induce bone marrow mesenchymal stem cells (BMSCs)differentiation into cardiomyocyte.OBJECTIVE:
To observe expression of cardiomyocyte-related receptors in cardiomyogenic differentiation of rat BMSCs.METHODS:
BMSCs of passage three were assigned to four groups group Ⅰ L-DMEM solution alone was replaced; ⅡL-DMEM solution was replaced after induction of 100 mg/L AST+5 μmol/L 5-Aza for 24 hours; group Ⅲ L-DMEM solution wasreplaced after induction of 10 μmol/L 5-Aza for 24 hours; and group Ⅳ L-DMEM solution was replaced after induction of 5 μmol/L5-Aza for 24 hours. Culture medium was replaced every 3 days in each group. Differentiated cells were identified after 30 days ofinduction.RESULTS ANDCONCLUSION:
Expression of cardiomyocyte specific proteins Nkx2.5, cTnT and Desmin was detected in groupsⅢ, Ⅳ and Ⅱ after induction compared with group Ⅰ , with significant differences (P < 0.01). The amount of cTnT and Desminexpression expression was significantly higher in groups Ⅱ and Ⅲ compared with group Ⅳ (P < 0.01). The level of Nkx2.5expression was significantly higher in groups Ⅱ (P < 0.01) and Ⅲ (P < 0.05) compared with group Ⅳ. No Nkx2.5, cTnT andDesmin espression was detected in group Ⅰ. After induction for 2 weeks, cells with spontaneous contractility were observed ingroups Ⅱ and Ⅲ, indicating differentiation towards cardiomyocyte after induction. Results demonstrated that induction effectswere similar between 100 mg/L AST+5 μmol/L 5-Aza and 10 μmol/L 5-Aza. This may contribute to cytoprotective effects of AST,which can promote vascular endothelial cell proliferation, enhance celss tolerance to 5-Aza-induced cytotoxicity and upregulatecardiac-specific protein expression.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Tissue Engineering Research
Year:
2012
Type:
Article
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