中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (13): 2033-2038.doi: 10.3969/j.issn.2095-4344.0494

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

人脂肪干细胞及其外泌体的分离与鉴定

李洪超1,金银鹏2,王 皙1,李 莉2,王晓今2,周 荣2,陈成伟2,傅青春2,程明亮3   

  1. 1贵州医科大学临床医学院,贵州省贵阳市 550004;2解放军第八五医院,上海肝病研究中心,上海市 200235;3贵州医科大学附属医院感染科,贵州省贵阳市 550004
  • 修回日期:2018-01-20 出版日期:2018-05-08 发布日期:2018-05-08
  • 通讯作者: 傅青春,硕士,主任医师,解放军第八五医院,上海肝病研究中心,上海市 200235; 并列通讯作者:程明亮,主任医师,贵州医科大学附属医院感染科,贵州省贵阳市 550004
  • 作者简介:李洪超,男,1991年生,山东省菏泽市人,汉族,贵州医科大学临床医学院在读硕士,主要从事干细胞研究。 并列第一作者:金银鹏,男,1988年生,重庆市人,汉族,硕士,主要从事干细胞研究。
  • 基金资助:

    南京军区医学创新重大课题(14ZX01);中国肝炎防治基金会-天晴肝病研究基金资助课题(TQGB20150104)

Isolation and identification of human adipose-derived stem cells and its exosomes

Li Hong-chao1, Jin Yin-peng2, Wang Xi1, Li Li2, Wang Xiao-jin2, Zhou Rong2, Chen Cheng-wei2, Fu Qing-chun2, Cheng Ming-liang3   

  1. 1School of Clinical Medicine, Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 2the 85th Hospital of PLA, Shanghai Research Center for Hepathopathy, Shanghai 200235, China; 3Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Revised:2018-01-20 Online:2018-05-08 Published:2018-05-08
  • Contact: Fu Qing-chun, Master, Chief physician, the 85th Hospital of PLA, Shanghai Research Center for Hepathopathy, Shanghai 200235, China; Cheng Ming-liang, Chief physician, Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • About author:Li Hong-chao, Master candidate, School of Clinical Medicine, Guizhou Medical University, Guiyang 550004, Guizhou Province, China. Jin Yin-peng, Master, the 85th Hospital of PLA, Shanghai Research Center for Hepathopathy, Shanghai 200235, China. Li Hong-chao and Jin Yin-peng contributed equally to this work.
  • Supported by:

    the Medical Innovation Project of the Nanjing Military Region, No. 14ZX01; the Chinese Foundation for Hepatitis Prevention and Control-Sunshine Foundation for Hepatitis, No. TQGB20150104

摘要:

文章快速阅读:

文题释义:
外泌体:
是一种能被大多数细胞分泌的微小膜泡,具有脂质双层膜结构,直径为30-150 nm。人们发现这种微小膜泡中含有细胞特异的蛋白、脂质和核酸,能作为信号分子传递给其他细胞从而改变其他细胞的功能。
超滤法:是一种膜滤法,它以多孔薄膜作为分离介质,依靠薄膜两侧压力差作为推动力来分离溶液中不同相对分子质量的物质。外泌体的提取方法有多种,比如超滤法、试剂盒沉淀法、蔗糖梯度离心法、超速离心法等。超滤法具有可重复利用、经济实惠、低损伤、简单易行、设备要求低等多种优势,在外泌体的提取过程中较其他几种方法更为常用。

 

摘要
背景:
间充质干细胞如今在科研领域被广泛地研究和应用,许多研究认为其发挥作用的机制很大程度上依赖于其旁分泌的外泌体。
目的:分离纯化人脂肪干细胞来源的外泌体,并鉴定其生物学特性。
方法:采用胶原酶消化法获得人脂肪干细胞,进行细胞表面分子标志和成骨、成脂分化能力鉴定。运用超滤法从人脂肪干细胞条件培养基中提取外泌体,应用扫描电子显微镜、粒度仪观察所获外泌体的形态和大小,采用抗体芯片检测外泌体所含蛋白质表达。
结果与结论:①人脂肪干细胞呈梭形、漩涡状生长,细胞表面表达CD73、CD44、CD90、CD105分子,具备成脂、成骨等多向分化潜能,可证实为人脂肪干细胞;②大多数外泌体直径均在30-150 nm范围内;扫描电镜显示外泌体呈均一大小的圆杯形态;③抗体芯片显示外泌体含FLOT1、ICAM、ALIX、CD81、CD63、ANXA5、TSG101等多种特殊蛋白;④以上结果表明实验成功分离得到人脂肪干细胞外泌体。

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
ORCID: 0000-0002-7141-8135(李洪超)

关键词: 外泌体, 干细胞, 间充质干细胞, 脂肪干细胞

Abstract:

BACKGROUND: Currently, mesenchymal stem cells have been widely explored and applied in scientific research field, and many studies suggest that the underlying mechanism of mesenchymal stem cells mainly relies on its exosomes.
OBJECTIVE: To isolate and identify human adipose-derived stem cells and its exosomes, and to identify their biological characteristics.
METHODS: Human adipose tissue was digested with collagenase I, and adipose-derived stem cells were isolated and purified. Immunophenotype, osteogenic and adipogenic abilities of adipose-derived stem cells were identified. Exosomes were isolated by using ultrafiltration method. Morphology of exosomes was observed by Nanosight and electron microscope. Expression of proteins in exosomes was detected by antibody array method.
RESULTS AND CONCLUSION: Adipose-derived stem cells exhibited long spindle-like or fibroblast-like appearance, expressed CD73, CD44, CD90, CD105 and had the potential to differentiate into many tissues, including bone and adipose tissues. The exosomes had the similar size, with the diameter of 30-150 nm. They possessed many proteins including FLOT1, ICAM, ALIX, CD81, CD63, ANXA5, TSG101, and so on. Findings from the present study indicate the successful isolation of exosomes from human adipose-derived 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

Key words: Adipose Tissue, Mesenchymal Stem Cells, Exosomes, Tissue Engineering

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