中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (23): 3715-3722.doi: 10.3969/j.issn.2095-4344.2014.23.018

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

小鼠心肌祖细胞的永生化及筛选

朱高慧1,何通川1,2,熊 丰1,朱 岷1,陈 沅1   

  1. 1重庆医科大学附属儿童医院干细胞研究室,儿童发育疾病研究教育部重点实验室,儿科学重庆市重点实验室,重庆市儿童发育重大疾病诊治与预防国际科技合作基地,重庆市 400014;2美国芝加哥大学分子肿瘤研究室,伊利诺伊州,美国芝加哥 60637
  • 修回日期:2014-05-13 出版日期:2014-06-04 发布日期:2014-06-04
  • 作者简介:朱高慧,女,1980年生,重庆市人,汉族,2009年重庆医科大学毕业,博士,主治医师,讲师,于2008 年3 月至2009 年4 月应邀赴美国芝加哥大学分子肿瘤实验室学习,主要从事干细胞及骨形态发生蛋白、Wnt、维甲酸等因素对干细胞向心肌细胞分化调控的研究。获得国家发明专利1项(专利号:ZL200910191280.8)。
  • 基金资助:

    国家自然科学基金面上项目(30772311);重庆市科委自然科学基金(CSTC,2010BB5107)

Immortalization and screening of cardiac progenitor cells in mice

Zhu Gao-hui1, He Tong-chuan1, 2, Xiong Feng1, Zhu Min1, Chen Yuan1   

  1. 1Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, and Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children’s Hospital, Chongqing Medical University, Chongqing 400014,China; 2Molecular Oncology Laboratory, Department of Orthopaedic Surgery, The University of Chicago Medical Center, Chicago 60637, IL, USA
  • Revised:2014-05-13 Online:2014-06-04 Published:2014-06-04
  • About author:Zhu Gao-hui, M.D., Attending physician, Lecturer, Stem Cell Biology and Therapy Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, and Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children’s Hospital, Chongqing Medical University, Chongqing 400014, China
  • Supported by:

    the National Natural Science Foundation of China, No. 30772311; the Natural Science Foundation of Science Committee of Chongqing City, No. CSTC 2010BB5107

摘要:

背景:移植外源干细胞治疗功能性心肌细胞死亡或凋亡,易导致移植并发症,因此心脏本身存在的心肌祖细胞成为理想的种子细胞。

目的:建立稳定来源于小鼠心脏的心肌祖细胞株,为研究影响心肌祖细胞在成体心肌细胞受损时的增殖分化因素提供理想的细胞模型。
方法:①分离培养胚胎15.5 d的小鼠心肌细胞。②感染反转录病毒SSR69使心肌细胞永生化,通过抗生素筛选和无限稀释法获得永生化的单克隆心肌祖细胞。③筛选出具有心肌祖细胞特性的单克隆细胞株。

结果与结论:①成功分离培养出心肌细胞,部分细胞可见明显搏动。②感染病毒后,通过潮霉素筛选成功选出76个单克隆,并将其进行命名为CP15-#。③对第1-20号克隆,根据心肌细胞标志基因筛选出具有心肌祖细胞特性的克隆。表明通过可逆SV40 T抗原介导的途径成功建立永生化心肌祖细胞。


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, 组织构建, 培养, 心肌祖细胞, 心肌细胞, 永生化, SSR69, 国家自然科学基金

Abstract:

BACKGROUND: Transplantation of exogenous stem cells for functional cardiac cell death or apoptosis easily induced complications after transplantation. Therefore, cardiac progenitor cells of heart itself have been ideal seed cells.

OBJECTIVE: To establish stable cell lines of cardiac progenitor cells from mouse heart, and to provide ideal cell models for studying proliferation and differentiation factors affecting cardiac progenitor cells during adult myocardial cells were damaged.
METHODS: (1) Myocardiocytes were isolated from embryonic 15.5 days mice. (2) The cultured myocardiocytes were immortalized using retrovirus SSR69. Immortalized monoclonal myocardial cells were obtained using antibiotic selection and infinite dilution. (3) Monoclonal cell line with the property of cardiac progenitor cells was screened out.
RESULTS AND CONCLUSION: (1) Myocardiocytes were successfully isolated and cultured. Partial cells showed obvious beating. (2) Myocardiocytes infected with retrovirus SSR69 were cloned and got 76 clones, then were named as CP15-#, (3) Screening the first 20 clones, the reasonable clones with the characteristics of cardiac progenitor cells were obtained according to myocardial cell marker genes. The results suggested that immortalized cardiac progenitor cells were established mediated by reversible SV40 T antigen.

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:  myocytes, cardiac, clone cells, genes

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