中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (17): 2761-2768.doi: 10.3969/j.issn.2095-4344.0501
• 干细胞综述 stem cell review • 上一篇 下一篇
江静怡1,2,樊瑜波1,2,郑丽沙1,2
修回日期:
2018-01-13
出版日期:
2018-06-18
发布日期:
2018-06-18
通讯作者:
郑丽沙,博士,副教授,硕士生导师,北京航空航天大学生物与医学工程学院,生物力学与力生物学教育部重点实验室,北京市 100083;北京航空航天大学生物医学工程高精尖创新中心,北京市 100083
作者简介:
江静怡,女,1993年生,江苏省南通市人,汉族,北京航空航天大学生物与医学工程学院在读硕士,主要从事力学生物学、组织工程基础研究。
基金资助:
国家自然科学基金(11572030,61227902,11120101001,11421202);科技部国家重点研发计划(2017YFC0108505,2017YFC0108500)
Jiang Jing-yi1, 2, Fan Yu-bo1, 2, Zheng Li-sha1, 2
Revised:
2018-01-13
Online:
2018-06-18
Published:
2018-06-18
Contact:
Zheng Li-sha, Ph.D., Associate professor, Master’s supervisor, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing 100083, China
About author:
Jiang Jing-yi, Master candidate, Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China; Beijing Advanced Innovation Centre for Biomedical Engineering, Beihang University, Beijing 100083, China
Supported by:
the National Natural Science Foundation of China, No. 11572030, 61227902, 11120101001, 11421202; the National Key R&D Program of China, No. 2017YFC0108505, 2017YFC0108500
摘要:
文章快速阅读:
文题释义: 细胞外基质调控间充质干细胞分化:在生物体内,细胞并不是孤立存在的,而是存在于其周围一定的微环境中,这个微环境包括其周围的基质细胞、细胞间质、体液以及各种细胞因子和物理因素等。细胞的微环境也被称为细胞生存的细胞外基质,越来越多的证据证明这些物理和化学因素共同影响细胞的命运。因此,通过改变细胞外基质的物理环境来调控干细胞的生物学行为,已经成为组织工程和再生医学研究的热点领域。 力学因素:是调节间充质干细胞生物学行为的一种重要因素,存在于一切细胞微环境中。学者们利用生物反应器在体外模拟体内多种力学环境,研究力学刺激对干细胞生物学行为的影响。如:利用平行平板流动腔和径向流装置等模拟流动剪切力、Flexer-cell加载系统模拟牵张力、水凝胶和聚二甲基硅氧烷作为基底模拟细胞外基质的不同硬度和拓扑结构等。适当的力学因素结合各种化学分化诱导因子等可以影响干细胞的分化方向,对组织工程具有重要的意义。
中图分类号:
江静怡,樊瑜波,郑丽沙. 力学因素对间充质干细胞神经向分化的影响[J]. 中国组织工程研究, 2018, 22(17): 2761-2768.
Jiang Jing-yi, Fan Yu-bo, Zheng Li-sha. Effects of mechanical stresses on neural differentiation of mesenchymal stem cells[J]. Chinese Journal of Tissue Engineering Research, 2018, 22(17): 2761-2768.
2.2 细胞外基质调控间充质干细胞神经向分化 在生物体内,细胞并不是孤立存在的,而是存在于其周围一定的微环境中,这个微环境包括其周围的基质细胞、细胞间质、体液以及各种细胞因子和物理因素等[45-46]。细胞的微环境也被称为细胞生存的细胞外基质[47],越来越多的证据证明这些物理和化学因素共同影响细胞的命运[48-52]。因此,通过改变细胞外基质的物理环境来调控干细胞的生物学行为,已经成为组织工程和再生医学研究的热点领域。细胞在体内和体外的微环境条件,见图1[53]。
2.2.1 细胞外基质的硬度 在生物体内,每一种组织和器官都有自己独特的“硬度特征”,因此机体内的细胞都处于不同的细胞外基质硬度条件下[54]。细胞外基质的硬度作为一种力学性质,对细胞的多种生物学行为如黏附、形态、增殖、分化、凋亡和迁移等都有重要的影响[55-59]。特别是干细胞在不同硬度的基底上生长时对应不同的分化方向,见表1。研究表明,细胞在与不同组织相对应硬度的基底上生长时趋向于向相应组织方向分化[60-61]。
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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
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