中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (6): 868-875.doi: 10.3969/j.issn.2095-4344.2015.06.009

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

人诱导性多潜能干细胞系的建立

师迎旭1,韩艳秋1,谢印良2,杜  华2   

  1. 1内蒙古医科大学附属医院检验科,内蒙古自治区呼和浩特市  010050;2内蒙古医科大学基础医学院病理解剖教研室,内蒙古自治区呼和浩特市  010050
  • 收稿日期:2014-11-11 出版日期:2015-02-05 发布日期:2015-02-05
  • 通讯作者: 杜华,讲师,内蒙古医科大学基础医学院病理解剖教研室,内蒙古自治区呼和浩特市 010050
  • 作者简介:师迎旭,男,1978年生,内蒙古自治区呼和浩特人,汉族,博士,助理研究员,主要从事细胞生物学研究。

Establishment of human induced pluripotent stem cell lines

Shi Ying-xu1, Han Yan-qiu1, Xie Yin-liang2, Du Hua2   

  1. 1Department of Clinical Laboratory, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China; 2Department of Pathological Anatomy, School of Basic Medicine, Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China
  • Received:2014-11-11 Online:2015-02-05 Published:2015-02-05
  • Contact: Du Hua, Lecturer, Department of Pathological Anatomy, School of Basic Medicine, Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China
  • About author:Shi Ying-xu, M.D., Assistant researcher, Department of Clinical Laboratory, Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China

摘要:

背景:诱导性多潜能干细胞与肿瘤干细胞的发生过程极其相似,而且具有的干细胞特性极其接近人胚胎干细胞。因此,研究诱导性多潜能干细胞有利于人们进一步认识并了解人类发育以及肿瘤的发生过程。
目的:掌握建立人诱导性多潜能干细胞系的技术,以便为特异性疾病细胞的重编程建立技术平台,从而利用重编程技术研究疾病的发病机制。
方法:将含有Oct4、Sox2、Klf-4和c-Myc 4个转录因子的反转录病毒感染人皮肤成纤维细胞(HS27细胞),在人胚胎干细胞培养条件下诱导产生人胚胎干细胞样的克隆。挑取并进一步扩增,通过克隆形态、碱性磷酸酶活性、免疫荧光检测是否有人胚胎干细胞标记物Oct4、Sox2、c-Myc、Klf-4的表达,悬滴法检测HS27细胞来源的克隆形成畸胎瘤的能力和验证向3个胚层的分化能力。
结果与结论:经病毒感染诱导产生的胚胎干细胞样克隆呈绿色荧光蛋白阴性,克隆在细胞形态方面与人胚胎干细胞克隆相似,进一步扩增经碱性磷酸酶检测克隆呈阳性,免疫荧光检测克隆表达Oct4、Sox2、c-Myc、Klf-4,并且HS27细胞来源的克隆注入免疫缺陷小鼠体内可以形成畸胎瘤并经苏木精-伊红染色显示具有向三胚层分化能力。实验成功构建了人诱导性多潜能干细胞系,为下一步开展疾病细胞特异性重编程研究奠定了良好的实验基础。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

关键词: 干细胞, 培养, 人诱导性多潜能干细胞, 人胚胎干细胞, 畸胎瘤, 三胚层分化, Oct4, Sox2, c-Myc, Klf-4

Abstract:

BACKGROUND: Induced pluripotent stem cells have a generating process similar to cancer stem cells and possess stem cell characteristics extremely close to human embryonic stem cells. Therefore, studies on induced pluripotent stem cells are in favor of an increased awareness and understanding of human development and tumor occurrence.
OBJECTIVE: To master the technology of establishing induced pluripotent stem cell lines in order to build the technology platform for reprogramming specific disease cells, thus to explore the pathogenesis of the disease using reprogramming technology.
METHODS: Retroviruses containing Oct4, Sox2, Klf-4, and c-Myc4 transcription factors were used to transfect human skin fibroblasts (HS27 cells), and then the cells were induced to differentiate to human embryonic stem cell-like clones in the human embryonic stem cell culture conditions. The cells were picked and further amplified. After observation of clone morphology and alkaline phosphatase activity test, immunofluorescence detection was used to detect whether human embryonic stem cell markers Oct4, Sox2, c-Myc, Klf-4 expressed, the pendant-drop method was used to detect the ability of HS27-derived clones to form teratomas and verify the  differentiation into three germ layers.
RESULTS AND CONCLUSION: After viral infection, embryonic stem cell-like clones formed and were negative for green fluorescent proteins. These clones were similar to human embryonic stem cell clones in cell morphology. After further amplification, they were positive for alkaline phosphatase. Immunofluorescence results showed that the clones expressed Oct4, Sox2, c-Myc, Klf-4, and HS27 cells-derived clones injected into immunodeficient mice could form teratomas and had the ability to differentiate into the three germ layers under hematoxylin-eosin staining. In this experiment, induced pluripotent stem cell lines were successfully constructed, laying a good experimental foundation for disease-specific cell reprogramming research.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

Key words: Induced Pluripotent Stem Cells, Embryonic Stem Cells, Teratoma

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