中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (17): 2714-2721.doi: 10.3969/j.issn.2095-4344.2017.17.015

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

共培养方法诱导3种间充质干细胞向神经细胞分化的比较

徐丽丽1,王洪元2,李学达3,刘  兵4,郑方芳1,杨乃龙1   

  1. 青岛大学附属医院,1内分泌与代谢病科,2综合部,3介入医学中心,4血管外科,山东省青岛市  266000
  • 修回日期:2017-02-16 出版日期:2017-06-18 发布日期:2017-06-29
  • 通讯作者: 杨乃龙,硕士,主任医师,青岛大学附属医院内分泌与代谢病科,山东省青岛市 266000
  • 作者简介:徐丽丽,女,1982年生,山东省日照市人,汉族,2009年青岛大学医学院毕业,硕士,主治医师,主要从事干细胞和骨质疏松症方面的研究。 并列第一作者:刘兵,男,1982年生,山东省淄博市人,汉族,2017年山东医科大学毕业,博士,主治医师,主要从事血管内皮分化研究。
  • 基金资助:

    山东省医药卫生科技发展计划项目(2009年第 HW027号)

Comparison of three kinds of mesenchymal stem cells differentiating into nerve cells under co-culture induction

Xu Li-li1, Wang Hong-yuan2, Li Xue-da3, Liu Bing4, Zheng Fang-fang1, Yang Nai-long1   

  1. 1Department of Endocrinology and Metabolic Disease, 2Comprehesive Department, 3Interventional Center, 4Department of Vascular Surgery, Qingdao University Affiliated Hospital, Qingdao 266000, Shandong Province, China
  • Revised:2017-02-16 Online:2017-06-18 Published:2017-06-29
  • Contact: Yang Nai-long, Master, Chief physician, Department of Endocrinology and Metabolic Disease, Qingdao University Affiliated Hospital, Qingdao 266000, Shandong Province, China
  • About author:Xu Li-li, Master, Attending physician, Department of Endocrinology and Metabolic Disease, Qingdao University Affiliated Hospital, Qingdao 266000, Shandong Province, China Liu Bing, M.D., Attending physician, Department of Vascular Surgery, Qingdao University Affiliated Hospital, Qingdao 266000, Shandong Province, China Xu Li-li and Liu Bing contributed equally to this work.
  • Supported by:

    the Medical and Health Science Development Plan of Shandong Province in 2009, No. HW027

摘要:

文章快速阅读:

文题释义:
共培养:
是人们为了建立更类似于体内环境的培养体系,尽可能使体外环境与体内环境相吻合,从而使细胞间能相互沟通信息,相互支撑生长增殖。细胞共培养技术是将2种或2种以上的细胞共同培养于同一环境中,由于其具有更好地反映体内环境的优点,被广泛应用于现代细胞研究中。
神经元特异性烯醇化酶:是参与糖酵解途径的烯醇化酶中的一种,存在于神经组织和神经内分泌组织中。神经元特异性烯醇化酶在脑组织细胞的活性最高,外周神经和神经分泌组织的活性水平居中,最低值见于非神经组织、血清和脊髓液。它被发现在与神经内分泌组织起源有关的肿瘤中,特别是小细胞肺癌中有过量的神经元特异性烯醇化酶表达,导致血清中神经元特异性烯醇化酶明显升高。

 

摘要
背景:
尝试创建更加类似于人体的微环境,从而可以诱导人骨髓间充质干细胞、人胎盘间充质干细胞、人脐血间充质干细胞定向分化。
目的:观察与神经细胞共培养诱导人骨髓间充质干细胞、人胎盘间充质干细胞、人脐血间充质干细胞向神经细胞分化的可行性。
方法:体外分离培养人骨髓间充质干细胞、人胎盘间充质干细胞、人脐血间充质干细胞,采用Transwell共培养装置建立与神经细胞共培养体系,观察3种细胞的形态变化,在共培养四五天后用免疫荧光染色方法检测3种细胞中神经元特异性烯醇化酶的表达,以单纯低糖DMEM培养基培养的间充质干细胞为对照组。
结果与结论:①3种间充质干细胞生长伸展,形成突起,并可互相形成连接。神经元特异性烯醇化酶阳性表达率:脐血间充质干细胞>胎盘间充质干细胞>骨髓间充质干细胞;②对照组中3种间充质干细胞均没有神经样形态结构,神经元特异性烯醇化酶表达阴性;③结果表明,神经细胞提供的共培养微环境对3种间充质干细胞分化为神经元均具有诱导和促进作用。

 

 

 

关键词: 干细胞, 分化, 共培养, 骨髓间充质干细胞, 胎盘间充质干细胞, 脐血间充质干细胞, 诱导分化, 神经细胞

Abstract:

BACKGROUND: Scholars have been trying to create a microenvironment similar to the human body, which can induce the directional differentiation of mesenchymal stem cells from human bone marrow, placenta and umbilical cord blood.
OBJECTIVE: To compare the neuronal differentiation of human bone marrow mesenchymal stem cells, human placental mesenchymal stem cells and human umbilical cord blood mesenchymal stem cells induced by co-culture with nerve cells.
METHODS: Human bone marrow mesenchymal stem cells, human placental mesenchymal stem cells and human umbilical cord blood mesenchymal stem cells cultured in vitro were co-cultured with nerve cells using the Transwell system. The morphological changes of three kinds of cells in the co-culture system were detected. After co-culture for 4-5 days, immunofluorescence staining was used to measure the expression of neuron-specific enolase in cells. Mesenchymal stem cells only cultured in low glucose DMEM medium were used as controls.
RESULTS AND CONCLUSION: These three kinds of mesenchymal stem cells were extended, and interconnected processes were detective. The positive expression of neuron-specific enolase was highest in the human umbilical cord blood mesenchymal stem cells followed by human placental mesenchymal stem cells and human bone marrow mesenchymal stem cells in order. In the control group, none of the three kinds of mesenchymal stem cells have neuronal morphology, and the expression of neuron specific enolase was negative for the immunofluorescence staining. To conclude, microenvironment provided by nerve cells can induce these three kinds of mesenchymal stem cells to differentiate into neurons.

 

 

Key words: Mesenchymal Stem Cells, Coculture Techniques, Neurons, Cell Transdifferentiation, Tissue Engineering

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