中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (28): 4535-4541.doi: 10.3969/j.issn.2095-4344.2014.28.018

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

小鼠附睾脂肪干细胞的分离培养及鉴定

张鉴清1,季佳霖2,崔新明2,张  祺3,李艳茹2   

  1. 1吉林大学第四医院,吉林省长春市  130011;2吉林大学病理生物学教育部重点实验室,吉林大学基础医学院病理学系,吉林省长春市  130021;3吉林大学,吉林省长春市  130021
  • 出版日期:2014-07-02 发布日期:2014-07-02
  • 通讯作者: 李艳茹,副教授,硕士生导师,吉林大学病理生物学教育部重点实验室,吉林大学基础医学院病理学系,吉林省长春市 130021
  • 作者简介:张鉴清,男,1972年生,吉林省舒兰市人,汉族,副主任医师,主要从事手足外科的临床研究工作。
  • 基金资助:

    吉林省科技发展计划青年科研基金资助项目(20090192)

Isolation, culture and identification of adipose-derived stem cells from mouse epididymis 

Zhang Jian-qing1, Ji Jia-lin2, Cui Xin-ming2, Zhang Qi3, Li Yan-ru2   

  1. 1 the Fourth Hospital of Jilin University, Changchun 130011, Jilin Province, China; 2 the Key Laboratory of Pathobiology of Ministry of Education, Department of Pathology, School of Basic Medical Sciences, Jilin University, Changchun 130021, Jilin Province, China; 3 Jilin University, Changchun 130021, Jilin Province, China
  • Online:2014-07-02 Published:2014-07-02
  • Contact: Li Yan-ru, Associate professor, Master’s supervisor, the Key Laboratory of Pathobiology of Ministry of Education, Department of Pathology, School of Basic Medical Sciences, Jilin University, Changchun 130021, Jilin Province, China
  • About author:Zhang Jian-qing, Associate chief physician, the Fourth Hospital of Jilin University, Changchun 130011, Jilin Province, China
  • Supported by:

    the Youth Scientific Research Program of Science and Technology Development Plan of Jilin Province, No. 20090192

摘要:

背景:脂肪干细胞作为一种新的成体干细胞,具有来源丰富、取材容易、增殖能力强等优点,受到人们越来越多地关注。
目的:体外分离培养小鼠附睾脂肪组织中的脂肪干细胞,并鉴定其生物学特性。
方法:无菌切取小鼠附睾处脂肪组织,采用胶原酶进行消化,利用1次消化多次收集与差速贴壁法分离纯化脂肪干细胞。倒置显微镜及透射电子显微镜观察脂肪干细胞的形态。绘制脂肪干细胞的生长曲线。流式细胞术检测脂肪干细胞的免疫表型。加入细胞诱导剂对脂肪干细胞进行成骨及成脂肪的诱导分化。扫描电子显微镜观察脂肪干细胞与胶原支架材料的相容性。
结果与结论:倒置显微镜下可见脂肪干细胞呈长梭形或成纤维细胞样,密集排列成漩涡状或成束状交织,可在体外稳定传至第9代。透射电子显微镜下可见脂肪干细胞表面有丰富的微绒毛结构,细胞核体积大,细胞质内可见线粒体、粗面内质网等细胞器。脂肪干细胞表达CD44、CD29,不表达CD34。经成脂肪诱导剂诱导后,多数脂肪干细胞胞质内可见小脂滴,油红O染色可将小脂滴染成红色。经成骨诱导剂诱导后,在脂肪干细胞生长密集区域内的细胞结构模糊、细胞间界限不清楚。经茜素红染色后,可见较多大小不一的折光率较强颗粒状结构沉积。扫描电子显微镜观察到脂肪干细胞呈铺展状生长于胶原支架材料上。结果表明该方法分离出的脂肪干细胞能在体外扩增并稳定传代,在一定诱导条件下,能够分化为成骨细胞和脂肪细胞并且与胶原支架具有良好的相容性。


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, 小鼠, 附睾, 脂肪组织, 差速贴壁, 培养

Abstract:

BACKGROUND: As a new kind of adult stem cells, adipose-derived stem cells get more and more attention, because of rich source, drawing materials easily and powerful proliferation. 
OBJECTIVE: To isolate and culture adipose-derived stem cells from the epididymal adipose tissue in mice, and to identify their biological characteristics.
METHODS: Adipose tissue was obtained from epididymis in mice by aseptically cutting. The tissue was digested using collagenase. Adipose-derived stem cells were separated and purified by using one digestion, multiple collection method and differential adhesion method. The morphology of adipose-derived stem cells was observed using inverted microscopy and transmission electron microscopy. Growth curve of adipose-derived stem cells was drawn. Immunophenotype of adipose-derived stem cells was identified by flow cytometry. Adipose-derived stem cells were induced to differentiate into adipocytes and osteocytes using cell inductors. Compatibility of adipose-derived stem cells and collagen scaffold material was observed using scanning electron microscope.  
RESULTS AND CONCLUSION: Adipose-derived stem cells exhibited long spindle-like or fibroblast-like appearance, grew intensively and arranged in scroll and fascicular shape. In vitro, adipose-derived stem cells could be passaged to passage 9 under the inverted microscope. Under the transmission electron microscope, adipose-derived stem cells showed abundant microvilli on the cell surface. The nuclei were big in size. Some organelles were seen in cytoplasma, such as mitochondria and rough endoplasmic reticulum. Adipose-derived stem cells expressed CD44 and CD29, did not express CD34. After inducing by inductor, many small lipid droplets were seen in the cytoplasm of adipose-derived stem cells. The small lipid droplets were dyed red with oil red O. After induction of osteogenic inductor, the boundary line among adipose-derived stem cells was not clear and the structure of cells was fuzzy in the growth-intensive areas. There were many strong refractive granular material deposits at that field after dyeing with alizarin red. Scanning electron microscope revealed that adipose-derived stem cells were spread on the collagen scaffold. Results suggested that adipose-derived stem cells isolated by this method could amplify in vitro and stably subcultured. Under a certain inducing condition, adipose-derived stem cells could differentiate into osteoblasts and adipocytes, which showed a good compatibility with collagen scaffold.


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: stem cells, adipose tissue, epididymis, mice, inbred BALB C, cells, cultured

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