中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (45): 6726-6732.doi: 10.3969/j.issn.2095-4344.2016.45.006

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

CM-Dil标记大鼠骨髓间充质干细胞的生物学特性探讨

张雅妮1,于美娟2,冯善伟2,王淑辉2,李美山2,熊  符2,张  成2   

  1. 1广州市妇女儿童医疗中心小儿神经科, 广东省广州市  510623
    2中山大学附属第一医院神经科,广东省广州市  510080
  • 修回日期:2016-08-26 出版日期:2016-11-04 发布日期:2016-11-04
  • 通讯作者: 张成,教授,中山大学附属第一医院神经科,广东省广州市 510080
  • 作者简介:张雅妮,女,1977年生,山东省人,汉族,2006年中山大学毕业,博士,主治医师,主要从事神经系统遗传病方面研究。
  • 基金资助:

    国家自然科学基金(30370510);广东省科技计划项目(2011A030400006)

Effect of CM-Dil labeling on biological characteristics of rat bone marrow mesenchymal stem cells

Zhang Ya-ni1, Yu Mei-juan2, Feng Shan-wei2, Wang Shu-hui2, Li Mei-shan2, Xiong Fu2, Zhang Cheng2   

  1. 1Department of Pediatric Neurology, Guangzhou Women and Children’s Medical Center, Guangzhou 510623, Guangdong Province, China
    2Department of Neurology, First Hospital of Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China
  • Revised:2016-08-26 Online:2016-11-04 Published:2016-11-04
  • Contact: Zhang Cheng, Professor, Department of Neurology, First Hospital of Sun Yat-Sen University, Guangzhou 510080, Guangdong Province, China
  • About author:Zhang Ya-ni, M.D., Attending physician, Department of Pediatric Neurology, Guangzhou Women and Children’s Medical Center, Guangzhou 510623, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 30370510; the Scientific Research Plan of Guangdong Province, No. 2011A030400006

摘要:

文章快速阅读:

文题释义:
细胞标记:
在多细胞系统中,为了追踪调查某特定细胞(群)的作用和行为,把作为对象的细胞(群)加以标记。
CM-Dil:氯甲基-1,1’-双十八烷基-3,3,3’,3’ -四甲基-吲哚-羰花青-高氯酸盐(Chloromethylbenzamido derivatives of 1,1'-dioctadecyl-3,3,3',3'-tetramethylindo- carbocyanine perchlorate)是一种亲脂性荧光染料,易嵌入生物质膜内并在膜内作侧向扩散运动,从而标记整个细胞。无细胞毒性,不影响细胞的存活、生长,在标记细胞内消失慢,而且不会扩散到其它未标记细胞。在标记后不会影响其荧光,适合长期观察追踪。

 

摘要
背景:
目前已有部分实验采用CM-Dil标记间充质干细胞开展体内外实验,取得良好成果。
目的:观察CM-Dil标记大鼠骨髓间充质干细胞的生物学特性及其定向迁移能力。
方法:分离培养大鼠骨髓间充质干细胞,通过流式细胞技术分析其特异性细胞表面标记抗原(CD29,CD44,CD11b,CD45)的表达。用CM-Dil标记大鼠骨髓间充质干细胞,继续培养细胞,观察细胞的形态及增殖情况,及传代后荧光的强度与持久性。采用Transwell小室进行标记后大鼠骨髓间充质干细胞向mdx鼠腓肠肌匀浆液的迁移实验。
结果与结论:所培养细胞均一性好,均表达CD29和CD44,不表达CD11b和CD45,符合骨髓间充质干细胞的特点。经CM-Dil标记后对大鼠骨髓间充质干细胞的形态、增殖无明显影响,传代后仍可保持荧光强度,但随传代有所减弱。标记前后大鼠骨髓间充质干细胞的迁移能力无显著性差异(P > 0.05)。结果说明,CM-Dil标记过程安全、简单、高效,对大鼠骨髓间充质干细胞的形态、增殖及迁移能力无明显影响,体外细胞传代后仍可保持荧光,是大鼠骨髓间充质干细胞标记与示踪的理想试剂。

 

 

关键词: 干细胞, 骨髓干细胞, 细胞标记, CM-Dil, 假肥大型肌营养不良, 大鼠, 骨髓, 间充质干细胞, 生物学特性, 迁移, mdx, Transwel, 国家自然科学基金

Abstract:

BACKGROUND: Existing evidence has shown that CM-Dil-labeled mesenchymal stem cells have delivered better results in experiments in vivo and in vitro.
OBJECTIVE: To investigate the effect of in vitro CM-Dil labeling on biological characteristics and directed migration of rat bone marrow mesenchymal stem cells.
METHODS: Mesenchymal stem cells were isolated and cultured from the bone marrow of Sprague-Dawley rats. The specific surface antigens, CD29, CD44, CD11b, CD45, were detected by flow cytometry. The rat bone marrow mesenchymal stem cells were labeled with CM-Dil, and then were cultured and passed continually. Thereafter the morphology and proliferation ability of labeled cells were assessed. The strength and duration of fluorescence after CM-Dil labeling were detected. Transwell chambers were used to investigate the migration ability of labeled cells towards the homogenate of the gastrocnemius muscles of mdx mice.
RESULTS AND CONCLUSION: The cultured cells were markedly positive for CD29 and CD44, but negative for CD11b and CD45, which were in accordance with the features of bone marrow mesenchymal stem cells. CM-Dil-labeled cells were not different from unlabeled cells in the aspect of morphology and proliferation. Fluorescence was still visible after passage; however, a reduction in fluorescent intensity was observed under an inverted fluorescent contrast phase microscope after labeling. The labeled cells showed no different migration ability from the unlabeled cells (P > 0.05). In conclusion, the procedure of CM-Dil labeling is safe, simple and effective. CM-Dil could be a good choice for labeling and tracing rat bone marrow mesenchymal stem cells.

 

 

Key words: Stem Cells, Bone Marrow, Cell Proliferation, Tissue Engineering

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