中国组织工程研究 ›› 2021, Vol. 25 ›› Issue (7): 1002-1007.doi: 10.3969/j.issn.2095-4344.2163

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

低氧培养犬脂肪间充质干细胞的生物学特性

樊全宝1,罗惠娜1,王丙云1,陈胜锋1,崔连旭2,江文康1,赵明明1,王静静1,罗冬章1,陈志胜1,白银山1,刘璨颖1,张  晖1   

  1. 1佛山科学技术学院生命科学与工程学院,广东省佛山市   528231;2中山大学附属佛山医院&佛山市第一人民医院神经外科,广东省佛山市  528000
  • 收稿日期:2020-01-17 修回日期:2020-01-19 接受日期:2020-03-18 出版日期:2021-03-08 发布日期:2020-12-08
  • 通讯作者: 陈胜锋,博士,副教授,佛山科学技术学院生命科学与工程学院,广东省佛山市 528231 王丙云,博士,教授,佛山科学技术学院生命科学与工程学院,广东省佛山市 528231
  • 作者简介:樊全宝,男,1996年生,广东省徐闻县人,汉族,2019年佛山科学技术学院毕业,主要从事动物干细胞基本特性和临床应用研究。
  • 基金资助:
    广东省自然科学基金(2017A030313171);广东省自然科学基金(2018A030313892)

Biological characteristics of canine adipose-derived mesenchymal stem cells cultured in hypoxia

Fan Quanbao1, Luo Huina1, Wang Bingyun1, Chen Shengfeng1, Cui Lianxu2, Jiang Wenkang1, Zhao Mingming1, Wang Jingjing1, #br# Luo Dongzhang1, Chen Zhisheng1, Bai Yinshan1, Liu Canying1, Zhang Hui1   

  1. 1College of Life Science and Engineering, Foshan University of Science and Technology, Foshan 528231, Guangdong Province, China; 2Foshan Hospital Affiliated to Sun Yat-sen University & Department of Neurosurgery, Foshan First People’s Hospital, Foshan 528000, Guangdong Province, China
  • Received:2020-01-17 Revised:2020-01-19 Accepted:2020-03-18 Online:2021-03-08 Published:2020-12-08
  • Contact: Chen Shengfeng, MD, Associate professor, College of Life Science and Engineering, Foshan University of Science and Technology, Foshan 528231, Guangdong Province, China Wang Bingyun, MD, Professor, College of Life Science and Engineering, Foshan University of Science and Technology, Foshan 528231, Guangdong Province, China
  • About author:Fan Quanbao, College of Life Science and Engineering, Foshan University of Science and Technology, Foshan 528231, Guangdong Province, China
  • Supported by:
    the Natural Science Foundation of Guangdong Province, No. 2017A030313171; the Natural Science Foundation of Guangdong Province, No. 2018A030313892

摘要:

文题释义:
犬脂肪间充质干细胞:是从犬脂肪组织中分离得到的一种具有多向分化潜能的干细胞,它具有体内储存量大、获取容易、性状稳定等特点。脂肪干细胞在体外可分化为成脂细胞、成骨细胞、软骨细胞等,还可以通过旁分泌作用降低目标组织的炎性反应,加速损伤的复原。
低氧培养:目前大部分研究对细胞培养的氧体积分数为21%,而正常机体的平均氧体积分数仅5%,适当的低氧气培养会使干细胞生理功能出现相应的改变。

背景:以往研究发现低氧对间充质干细胞增殖、分化及细胞因子分泌等方面均有不同程度的影响,但低氧对犬脂肪间充质干细胞的影响尚未见相关研究。
目的:探讨低氧环境对犬脂肪间充质干细胞生物学特性的影响。
方法:通过酶消化法分离培养犬脂肪间充质干细胞,第2代时分为常氧组(氧气体积分数为21%)和低氧组(氧气体积分数为5%),比较了两组细胞的形态特征、增殖速度、细胞表面标志物、分化能力和细胞因子分泌水平等。
结果与结论:①低氧环境下培养的脂肪间充质干细胞生长状况良好,细胞形态与常氧组一样,均呈梭形和多棱形;②低氧组的细胞增殖速度加快,细胞倍增时间比常氧组短(P均< 0.05),成脂、成骨分化出现时间较早;③常氧组和低氧组脂肪间充质干细胞均高表达 CD90、CD44和CD105,低表达 CD45;④低氧组脂肪间充质干细胞的脑源性神经营养因子和血管内皮生长因子 mRNA表达量分别是常氧组的2.3倍
(P < 0.05)和3.0倍(P < 0.05);⑤结果提示低氧环境对脂肪间充质干细胞的形态、表面标记物无明显影响,但对细胞增殖、分化和细胞因子分泌能力有促进作用。
https://orcid.org/0000-0003-2478-2986(樊全宝)

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

关键词: 干细胞, 脂肪间充质干细胞, 低氧, 细胞因子, 生物学特性, 犬, 实验

Abstract: BACKGROUND: Previous studies have found that hypoxia has different effects on the proliferation and differentiation of mesenchymal stem cells and secretion of cytokines, but the effect of hypoxia on canine adipose-derived mesenchymal stem cells has not been seen. 
OBJECTIVE: To investigate the effect of hypoxic environment on the biological characteristics of canine adipose-derived mesenchymal stem cells. 
METHODS:  Canine adipose-derived mesenchymal stem cells were isolated and cultured by enzyme digestion. Passage 2 adipose-derived mesenchymal stem cells could be divided into normoxia group (21% oxygen volume fraction) and hypoxia group (5% oxygen volume fraction). Morphological characteristics, proliferation speed, cell surface marker expression, differentiation capacity, and cytokine secretion level were compared between the two groups.  
RESULTS AND CONCLUSION: (1) The growth of adipose-derived mesenchymal stem cells cultured in hypoxic environment was good. The cell morphology was fusiform and polyhedral, the same as that of the normoxia group. (2) The proliferation rate of cells in the hypoxia group was accelerated, and the cell doubling time was shorter than that in the normoxia group (all P < 0.05). The differentiation time of lipogenesis and osteogenesis was shortened. (3) The expression of CD90, CD44 and CD105 was high in both normoxia group and hypoxia group, while the expression of CD45 was low. (4) The mRNA expression levels of brain-derived neurotrophic factor and vascular endothelial growth factor in the hypoxia group were 2.3 times (P < 0.05) and 3.0 times (P < 0.05) higher than those in the normoxia group. (5) The results indicated that the hypoxic environment had no significant effect on the morphology and surface marker of adipose-derived mesenchymal stem cells, but promoted cell proliferation, differentiation and cytokine secretion.

Key words: stem cell, adipose-derived mesenchymal stem cells, hypoxia, cytokine, biological characteristics, dog, experiment

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