中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (13): 2108-2113.doi: 10.3969/j.issn.2095-4344.2017.13.023

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

人骨骼肌来源不同表面标志物间充质干细胞特定亚群的多向分化潜能

赵亚光,李  毅,宋卓悦,李广恒   

  1. 郑州大学第一附属医院骨科,河南省郑州市  450000
  • 修回日期:2017-03-13 出版日期:2017-05-08 发布日期:2017-06-09
  • 通讯作者: 李广恒,博士,教授,博士生导师。郑州大学第一附属医院骨科, 河南省郑州市 450000
  • 作者简介:赵亚光,男,1990年生,河南省开封市人,汉族,郑州大学在读硕士,主要从事关节外科基础及临床研究。
  • 基金资助:

    国家自然科学基金(81472136)

Multi-directional differentiation potential of subpopulations of mesenchymal stem cells isolated from human skeletal muscle expressing different myogenic and endothelial markers

Zhao Ya-guang, Li Yi, Song Zhuo-yue, Li Guang-heng   

  1. Department of Orthopedics, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan Province, China
  • Revised:2017-03-13 Online:2017-05-08 Published:2017-06-09
  • Contact: Li Guang-heng, M.D., Professor, Doctoral supervisor, Department of Orthopedics, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan Province, China
  • About author:Zhao Ya-guang, Studying for master’s degree, Department of Orthopedics, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, Henan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81472136

摘要:

文章快速阅读:

文题释义:
人骨骼肌干细胞:
具有一般干细胞的特点,可以自我更新、繁殖产生更多的干细胞,同时也可以分化成各种各样的具有特定功能的细胞,可作为多种组织工程的种子细胞,有非常重要的研究和应用价值。
3D细胞培养:利用磁性微球载体和磁悬浮技术使贴有细胞的微球载体悬浮在培养液中,确保了高质量、高密度的细胞繁殖,突破了传统有盖培养皿、培养瓶或微孔板细胞培养耗时繁琐,细胞产量微小等局限性。

 

摘要
背景:
骼肌来源的间充质干细胞,在骨形态发生蛋白4等因子的调节下具有多向分化潜能,但具体细胞亚群的分化情况尚不十分明确。
目的:观察人骨骼肌来源的不同表面标志物的间充质干细胞特定亚群的多向分化潜能。
方法:应用流式细胞分选技术,分选出具有不同细胞表面标志物的人骨骼肌干细胞亚群,根据CD56及CD34/CD144的表达差异,将细胞分成CD56+,CD56+CD34+CD144+,CD34+CD144+及未分选组共4组,对比不同细胞亚群组在骨形态发生蛋白4成骨诱导或骨形态发生蛋白4+转化生长因子β3成软骨诱导后的差异。通过碱性磷酸酶染色后碱性磷酸酶阳性细胞的百分比评估细胞骨代谢情况。将各亚群细胞进行3D培养和细胞因子处理后,通过硝酸银染色评估其成骨分化程度,通过阿尔新蓝染色评价成软骨分化程度。
结果与结论:①细胞骨代谢:经骨形态发生蛋白4处理后,4组细胞的碱性磷酸酶阳性细胞的百分比差异无显著性意义(P > 0.05);②细胞分化:不同表面标记物的4组细胞成骨及成软骨分化有明显差异,在相同成骨培养条件下,CD56+组成骨能力最强;相同成软骨培养条件下,CD56+,CD56+CD34+CD144+组呈阿尔新蓝染色阳性,CD56+CD34+CD144+组的染色更深且区域更大;③结果证实,成骨与成软骨潜能与不同的人骨骼肌间充质干细胞类型有关。人骨骼肌来源的间充质干细胞CD56+亚群和成骨潜能有密切关系。同时CD56+CD34+CD144+亚群分化能力更强,具有更强的成软骨潜能。

 

 

关键词: 干细胞, 分化, 骨骼肌, 骨缺损, 软骨缺损, 间充质干细胞, 标记物, 骨形态发生蛋白4, 成骨分化, 成软骨分化, 国家自然科学基金

Abstract:

BACKGROUND: Mesenchymal stem cells from human skeletal muscle exhibit multi-directional differentiation potential under the influence of osteogenic proteins such as bone morphogenetic protein 4 (BMP4). But the differentiation of a specific cell subpopulation is not yet clear.
OBJECTIVE: To characterize the multi-directional differentiation potential of mesenchymal stem cells from human skeletal muscle based on the expression of different surface markers.
METHODS: Four different subpopulations were isolated from the human skeletal muscle by fluorescence-activated cell sorting based on their expression of the myogenic-specific marker CD56 and the endothelial-specific markers CD34 and CD144, including CD56+, CD56+CD34+CD144+, CD34+CD144+, and unsorted groups. Osteogenic differentiation of the four groups of the cells was displayed by Von Kossa staining after the treatment with BMP4 alone or BMP4 plus transforming growth factor β3. Chondrogenic differentiation of these cells was displayed by Alcian blue staining. Bone metabolism was assessed by alkaline phosphatase staining.
RESULTS AND CONCLUSION: No significant difference in the bone metabolism was found among four groups after the treatment with BMP4 (P > 0.05). Osteogenic and chondrogenic potentials of the four cell subpopulations were significantly different. Under the same osteogenic induction, the CD56+ cells exhibited strongest potential for osteogenic differentiation; and under the same chondrogenic induction, the CD56+CD34+CD144+ cells exhibited better potential for chondrogenic differentiation than the CD56+ cells. These findings indicate that the osteogenic and chondrogenic potentials are intimately associated with the type of mesenchymal stem cells from human skeletal muscle: the CD56+ cells are closely related to the osteogenic potential, while the CD56+CD34+CD144+ cells have stronger chondrogenic potential. 

 

 

Key words: Stem Cells, Tissue Engineering, Cell Differentiation

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