中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (1): 44-48.doi: 10.3969/j.issn.2095-4344.2015.01.008

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

荧光磁性纳米粒子标记三维培养系统中的脂肪间充质干细胞

吕品雷1,苏约翰1,崔大祥2,汪  铮1   

  1. 1上海交通大学医学院附属仁济医院消化疾病研究所,上海市  200001
    2上海交通大学微纳科学技术研究院纳米生物工程研究室,上海市  200240
  • 修回日期:2014-11-29 出版日期:2015-01-01 发布日期:2015-01-01
  • 通讯作者: 汪铮,博士,副研究员,上海交通大学医学院附属仁济医院消化疾病研究所,上海市 200001;崔大祥,博士后,教授,上海交通大学微纳科学技术研究院纳米生物工程研究室,上海市 200240
  • 作者简介:吕品雷,男,1989年生,江苏省涟水县人,汉族,上海交通大学医学院在读硕士,主要从事干细胞相关研究。 并列第一作者:苏约翰,男,1985年生,上海市人,汉族,2011年华东理工大学毕业,硕士,主要从事干细胞相关研究。
  • 基金资助:

    上海市科委浦江人才计划项目(09PJ140730);国家自然科学基金项目(30971468)

Fluorescent supermagnetic nanoparticles-labeled adipose-derived mesenchymal stem cells in the three-dimensional culture system 

Lv Pin-lei1, Su Yue-han1, Cui Da-xiang2, Wang Zheng1   

  1. 1Institute of Digestive Diseases, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200001, China
    2Department of Bio-Nano Science and Engineering, Institute of Micro-Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China
  • Revised:2014-11-29 Online:2015-01-01 Published:2015-01-01
  • Contact: Wang Zheng, M.D., Associate researcher, Institute of Digestive Diseases, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200001, China;Cui Da-xiang, M.D., Professor, Department of Bio-Nano Science and Engineering, Institute of Micro-Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China
  • About author:Lv Pin-lei, Studying for master’s degree, Institute of Digestive Diseases, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200001, China; Su Yue-han, Master, Institute of Digestive Diseases, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200001, China Lv Pin-lei and Su Yue-han contributed equally to this work.
  • Supported by:

    the Pujiang Talent Project of Shanghai Science and Technology Commission, No. 09PJ140730; the National Natural Science Foundation of China, No. 30971468

摘要:

背景:荧光磁性纳米粒子具有量子点和磁粒子的双重特质,生物相容性好,能够被胞吞入细胞质高效地标记细胞。
目的:验证荧光磁性纳米粒子标记人脂肪间充质干细胞的可行性。
方法:抽脂术抽取健康人脂肪组织,采用Ⅰ型胶原酶消化法分离,贴壁培养纯化人脂肪间充质干细胞。取第6代脂肪间充质干细胞与荧光磁性纳米粒子孵育过夜,采用普鲁士蓝染色、激光共聚焦显微镜检测体外标记细胞情况,荧光成像系统观察荧光磁性纳米粒子标记的干细胞体内示踪效果。
结果与结论:普鲁士蓝染色显示荧光磁性纳米粒子以蓝色颗粒的形式分散于脂肪间充质细胞胞质中。激光共聚焦显微镜观察显示人脂肪间充质干细胞的细胞核被Hoechest33258染成蓝色,细胞质被标记成绿色;荧光成像结果表明标记的人脂肪间充质干细胞具有很好的成像效果。结果提示荧光磁性纳米粒子可以作为示踪剂在体外标记人脂肪间充质干细胞,为脂肪间充质干细胞的移植转化研究提供新方法。


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, 脂肪干细胞, 荧光磁性纳米粒子, 人脂肪间充质干细胞, 荧光成像, 示踪剂, 国家自然科学基金

Abstract:

BACKGROUND: Fluorescent magnetic nanoparticles with the properties of quantum dots and magnetic particles have good biocompatibility, and can label cells effectively through endocytosis.
OBJECTIVE: To validate the feasibility of fluorescent magnetic nanoparticles in labeling human adipose-derived mesenchymal stem cells.
METHODS: Healthy human adipose tissue was extracted and adipose-derived mesenchymal stem cells were isolated in vitro by type I collagenase digestion. Passage 6 cells were incubated with the fluorescent magnetic nanoparticles overnight. Prussian blue staining and laser scanning confocal microscope were used to observe labeled adipose-derived mesenchymal stem cells in vitro after co-culturing with fluorescent magnetic nanoparticles. The tracing effect of labeled adipose-derived mesenchymal stem cells in vivo was detected by fluorescence imaging system.
RESULTS AND CONCLUSION: Prussian blue staining showed that the fluorescent magnetic nanoparticles dispersed in the cytoplasm of adipose-derived mesenchymal stem cells in the form of blue particles. Under the laser scanning confocal microscope, the nuclei of adipose-derived mesenchymal stem cells were dyed blue by Hoechest33258, and the cytoplasm was dyed green. The fluorescence imaging results showed that labeled human adipose-derived mesenchymal stem cells had good imaging results. Therefore, as an efficient tracer, the fluorescent magnetic nanoparticles can label human adipose-derived stem cells in vitro and provide a new method for transplantation and transformation of adipose-derived mesenchymal stem cells.


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: Adipose Tissue, Mesenchymal Stem Cells, Biological Markers

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