中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (21): 3057-3064.doi: 10.3969/j.issn.2095-4344.2016.21.003

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

3-羟基丁酸-4-羟基丁酸共聚酯负载人骨髓间充质干细胞在骨组织工程中的应用

张俊标1,2,3,何志旭2,4,叶 川2,5,王 永3,6,王 梅7,刘 琴2,3,杨 龙2,李 靖2,马敏先3,6   

  1. 1贵州医科大学,贵州省贵阳市 550004;贵州医科大学,2细胞工程生物医药技术国家地方联合工程实验室,3口腔医学院,4儿科教研室,贵州省贵阳市 550004;贵州医科大学附属医院,5骨科,6口腔科,贵州省贵阳市 550004;7贵阳市口腔医院,贵州省贵阳市 550004
  • 收稿日期:2016-03-09 出版日期:2016-05-20 发布日期:2016-05-20
  • 通讯作者: 马敏先,副主任医师,贵州医科大学附属医院口腔修复科,贵州省贵阳市 550004
  • 作者简介:张俊标,男,1990年生,贵州省贵阳市人,汉族,贵州医科大学口腔修复学在读硕士,主要从事干细胞与组织工程研究。
  • 基金资助:

    国家自然科学基金资助项目(81360232);贵州省科学技术联合基金项目(黔科合LG[2012]002);贵阳市科技计划项目(筑科合同[20141001])

Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) scaffolds carrying human bone marrow mesenchymal stem cells for bone tissue engineering

Zhang Jun-biao1, 2, 3, He Zhi-xu2, 4, Ye Chuan2, 5, Wang Yong3, 6, Wang Mei7, Liu Qin2, 3, Yang Long2, Li Jing2, Ma Min-xian3, 6   

  1. 1Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 2National and Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, 3School of Stomatology, 4Department of Pediatrics, Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 5Department of Orthopedics, 6Department of Stomatology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 7Guiyang Stomatological Hospital, Guiyang 550004, Guizhou Province, China
  • Received:2016-03-09 Online:2016-05-20 Published:2016-05-20
  • Contact: Ma Min-xian, Associate chief physician, School of Stomatology, Guizhou Medical University, Guiyang 550004, Guizhou Province, China; Department of Stomatology, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • About author:Zhang Jun-biao, Studying for master’s degree, National and Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, School of Stomatology, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81360232; the Science and Technology Joint Foundation of Guizhou, No. 2012002; the Science and Technology Project of Guiyang, No. 20141001.

摘要:

文章快速阅读:

文题释义:

骨组织工程:利用组织工程学原理和方法能够再生骨组织,为骨缺损的修复提供了一种新的思路和方法。骨组织工程原理是将具有活力的种子细胞采用不同的构建技术负载在可供细胞黏附生长的可吸收支架材料上异位或原位植入体内。随时间的增加,支架材料逐步降解吸收,种子细胞沿支架材料生长,逐渐形成成熟的骨组织以修复骨缺损。

3-羟基丁酸-4-羟基丁酸共聚酯:是聚羟基烷酸酯家族中第3代生物可降解材料,它由多种微生物细菌合成,具有良好的生物降解性和生物相容性。3-羟基丁酸酯的含量决定了材料的强度和硬度,表现为脆性,4-羟基丁酸酯的含量用于改变材料的韧性,因此通过调节3-羟基丁酸酯、4-羟基丁酸酯的含量可以制备出从弹性材料到刚性材料不同特性的产品,应用于组织工程研究。

 

 

背景:3-羟基丁酸-4-羟基丁酸共聚酯(P3HB4HB)是近年来受到重视的聚羟基脂肪酸酯族组织工程支架材料,具有良好的生物相容性和细胞黏附性以及优良的力学性能,在组织工程研究领域显示出良好的应用前景。

 

目的:验证P3HB4HB支架材料与人骨髓间充质干细胞的体外生物相容性及体内异位成骨能力。

 

方法:①将第5代人骨髓间充质干细胞种植于P3HB4HB三维支架上使用成骨诱导液培养5 d,采用吖啶橙荧光染色及扫描电镜观察细胞在支架上的生长情况;②将第5代人骨髓间充质干细胞种植于P3HB4HB支架上体外使用成骨诱导液培养为实验组,不使用成骨诱导液培养为对照组,两组培养14 d后分别植入裸鼠皮下,植入后16周时取出行苏木精-伊红染色,Vonkossa染色和Ⅰ型胶原免疫组化染色检测植入物体内异位成骨情况。

 

结果与结论:①吖啶橙荧光染色显示细胞黏附于支架材料表面,生长良好;②扫描电镜观察成骨诱导的人骨髓间充质干细胞在P3HB4HB支架上生长良好,细胞产生丰富的细胞外基质;③植入16周时大体观形成骨样组织,Vonkossa染色、Ⅰ型胶原染色呈阳性,苏木精-伊红染色见较多成骨细胞,有典型的骨陷窝出现,对照组无骨组织形成;④研究表明P3HB4HB适合作为骨组织工程支架材料。

 

 

关键词: 生物材料, 骨生物材料, 生物相容性, 人骨髓间充质干细胞, 3-羟基丁酸-4-羟基丁酸共聚酯, 异位成骨, 组织工程支架, 种子细胞, 体内实验, 国家自然科学基金

Abstract:

BACKGROUND: As a noticeable tissue engineering material of polyhydroxyalkanoates family, poly(3-hydroxybutyrate-co-4-hydroxybutyrate)(P3HB4HB)exhibits good biocompatibility, adhesion and mechanical properties, presenting a extensive application future in tissue-engineered research.

 
OBJECTIVE: To investigate the biocompatibility in vitro and ectopic osteogenic differentiation in vivo of P3HB4HB and human bone marrow mesenchymal stem cells.
METHODS: Passage 5 human bone marrow mesenchymal stem cells transplanted onto the three-dimensional P3HB4HB scaffold were incubated with osteogenic induction medium (test group) or with no osteogenic induction(control group), respectively. After 5-day incubation, the cell growth was assessed by acridine orange staining and scanning electron microscopy; after14-day incubation, both kinds of cell-scaffold composites were subcutaneously implanted into the nude mice. At 16 weeks after implantation, the cell-scaffold composites were removed to observe ectopic osteogenic differentiation in vivo using hematoxylin-eosin staining, von Kossa staining and collagen type I immunohistochemical staining.

RESULTS AND CONCLUSION: Acridine orange staining showed that cells adhered well on the surface of the scaffold; under the scanning electron microscope, induced cells grew well on the P3HB4HB scaffold and produced abundant extracellular matrixes. In addition, at 16 weeks after implantation, there were osteoid tissues in the test group, positive for von Kossa staining as well as collagen type I immunohistochemical staining; furthermore, hematoxylin-eosin staining showed numerous osteoblasts and bone lacunas. In contrast, no bone tissues appeared in the control group. To conclude, P3HB4HB is a suitable material for bone tissue engineering.

 

 

 

Key words: Bone Marrow, Mesenchymal Stem Cells, 3-Hydroxybutyric Acid, Tissue Engineering

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