首页|人胚胎生殖细胞向心肌细胞诱导分化的研究

人胚胎生殖细胞向心肌细胞诱导分化的研究

Study on human embryonic germ cell inducible differentiation into cardiomyocytes

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目的 诱导人胚胎生殖细胞(hEGC)向心肌细胞分化,初步探讨其定向分化过程及调控机制.方法 组织块培养法体外培养hEGC,采用抗坏血酸诱导hEGC向心肌细胞分化,通过CCK-8法测定诱导后心肌细胞增殖率,免疫荧光法检测心肌连接蛋白Cx43的表达;利用半定量RT-PCR的方法鉴定hEGC和诱导后心肌细胞GATA-4和ACTC1等基因的表达;结合生物信息学方法推断分化过程中各蛋白的相互作用关系.结果 诱导后细胞阳性表达Cx43,且表现出一定的增殖能力;其表达GATA-4、ACTC1等基因的强度与未经诱导的hEGC均有所不同;GATA-4、Nkx2.5与各类心肌肌钙蛋白有着密切的联系.结论 hEGC能诱导分化为心肌细胞;蛋白质组学方法可以协助探讨其分化过程及调控机制.
Objective To induce human embryonic germ cell ( hEGC) differentiation into cardiomyocytes, find out its process and regulation mechanism preliminary. Methods The tissue was cultured in vitro to obtain hEGC. hEGCs were induced to differentiate into cardiocytes by ascorbic acid. Cell proliferation rate was detected by the CCK-8. Cx43 was detected by immunofluorescence on differentiated cells. Quantitative RT-PCR was applied to evaluate GATA-4, ACTC1 and other relevant gene expression by HEGC induced myocardid cell. Bioinformatics was used to analyze the interaction relationship between the proteins relate to the process of differentiation. Results Cx43 expression was positive in differentiated cells, showing their proliferation ability to a certain degree; the expression strength of GATA-4, ACTC1 is different from the hEGC before differentiation; there is intimate relationship among GATA-4,Nkx2. 5 and the cardiac troponin. Conclusion hEGCs could be induced to differentiate into cardiomyocytes. Proteomics method is qualified to assist us in researching the differentiation process and control mechanism.

human embryonic germ cellcell differentiationbioinformaticsRT-PCR

冯琦、朱旻、陈永珍

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苏州大学医学部基础医学与生物科学学院人体解剖与组织胚胎学系,江苏苏州215123

人胚胎生殖细胞 细胞分化 生物信息学 RT-PCR

苏州大学横向基金资助项目

P113400411

2012

苏州大学学报(医学版)
苏州大学

苏州大学学报(医学版)

CSTPCD
影响因子:0.499
ISSN:1673-0399
年,卷(期):2012.32(4)
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