中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (22): 3470-3475.doi: 10.3969/j.issn.2095-4344.2017.22.005

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

关节软骨细胞外基质/人脐带Wharton胶复合多孔支架的制备及评估

肖统光1,2,郝春香3,荆晓光2,刘雪剑2,郭岗岗2,杨建华2,郭全义1
  

  1. 1解放军总医院骨科研究所,北京市  100853;2佳木斯大学,黑龙江省佳木斯市  154007;3解放军总医院,北京市  100853
  • 收稿日期:2017-05-26 出版日期:2017-08-08 发布日期:2017-09-01
  • 通讯作者: 杨建华,教授,佳木斯大学,黑龙江省佳木斯市 154007
  • 作者简介:肖统光,男,1985年生,安徽省界首市人,汉族,佳木斯大学在读硕士,主要从事关节软骨再生方向的研究。
  • 基金资助:

    国家自然科学基金(81472092);国家高技术发展研究计划(863计划)(2012AA020502)

Preparation and evaluation of an articular cartilage extracellular matrix/human umbilical cord Wharton gel composite scaffold

Xiao Tong-guang1, 2, Hao Chun-xiang3, Jing Xiao-guang2, Liu Xue-jian2, Guo Gang-gang2, Yang Jian-hua2, Guo Quan-yi1 
  

  1. 1Institute of Orthopaedics, Chinese PLA General Hospital, Beijing 100853, China; 2Jiamusi University, Jiamusi 154007, Heilongjiang Province, China; 3Chinese PLA General Hospital, Beijing 100853, China
  • Received:2017-05-26 Online:2017-08-08 Published:2017-09-01
  • Contact: Yang Jian-hua, Professor, Jiamusi University, Jiamusi 154007, Heilongjiang Province, China
  • About author:Xiao Tong-guang, Studying for master’s degree, Institute of Orthopaedics, Chinese PLA General Hospital, Beijing 100853, China; Jiamusi University, Jiamusi 154007, Heilongjiang Province, China
  • Supported by:
     the National Natural Science Foundation of China, No. 81472092; the National High-Tech Research and Development Project of China (863 Program), No. 2012AA020502

摘要:

文章快速阅读

 

文题释义:
细胞外基质:是由动物细胞合成并分泌到胞外、分布在细胞表面或细胞之间的大分子,主要是一些多糖和蛋白,或蛋白聚糖,这些物质构成复杂的网架结构,支持并连接组织结构、调节组织的发生和细胞的生理活动。细胞外基质是动物组织的一部分,不属于任何细胞,它决定结缔组织的特性,对于一些动物组织的细胞具有重要作用。
脐带Wharton胶:脐带包括2条动脉和1条静脉,在动脉和静脉之间有特殊的胚胎黏液状结缔组织,这种特殊的黏液状组织被称为脐带Wharton胶,富含透明质酸、糖胺多糖及胶原等、成分与天然软骨细胞外基质类似。
 
背景:软骨组织工程主要包括种子细胞、支架材料、细胞因子及生物反应器等,其中支架材料是构建组织工程软骨的关键环节。
目的:制备关节软骨细胞外基质/人脐带Wharton胶复合多孔支架,评估其理化特性及细胞相容性。
方法:采用物理法分别制备猪关节软骨细胞外基质及人脐带Wharton胶,然后以冻融干燥法制备关节软骨细胞外基质/人脐带Wharton胶复合多孔支架,检测支架的孔隙率、吸水率、组织成分及纵向压缩弹性模量,并进行组织学染色。将关节软骨细胞外基质/人脐带Wharton胶复合多孔支架与兔软骨细胞共培养7 d,进行扫描电镜观察、活-死细胞染色及苏木精-伊红染色;分别采用关节软骨细胞外基质/人脐带Wharton胶复合多孔支架浸提液与细胞培养液培养兔软骨细胞6 d,MTT法检测细胞增殖。
结果与结论:①关节软骨细胞外基质/人脐带Wharton胶复合多孔支架横断面为均匀的多孔网状结构,孔壁上密布软骨纤维,纵断面为垂直管状结构,支架苏木精-伊红红染、番红O及甲苯胺蓝染色均呈阳性,含有胶原和糖胺多糖成分,支架的吸水率、孔隙率和纵向压缩弹性模量分别为(17.418 8±0.909 0)%、(81.495 1±6.621 0)%和(2.833 3±0.456 4) kPa;②共培养7 d,兔软骨细胞在支架上黏附和增殖,并均匀长入支架孔隙内;③关节软骨细胞外基质/人脐带Wharton胶复合多孔支架浸提液对软骨细胞无毒性;④结果表明,关节软骨细胞外基质/人脐带Wharton胶复合多孔支架的理化性能及生化成分与天然软骨相似,具有良好的细胞相容性。

关键词: 生物材料, 软骨生物材料, 细胞外基质, 人脐带Wharton胶, 软骨, 细胞相容性, 国家自然科学基金

Abstract:

BACKGROUND: Soft tissue engineering mainly includes seed cells, scaffolds, cytokines and bioreactors, among which, the scaffolds are the key link in the construction of tissue-engineered cartilage.
OBJECTIVE: To prepare an articular cartilage extracellular matrix/human umbilical cord Wharton gel porous scaffold, and to evaluate its physicochemical properties and biocompatibility.
METHODS: The articular cartilage extracellular matrix/human umbilical cord Wharton gel porous scaffold was prepared by freeze thawing drying method using porcine articular cartilage extracellular matrix and human umbilical cord Wharton glue as raw materials. The porosity, water absorption, tissue composition and longitudinal compressive elastic modulus of the scaffold were measured and histologically stained. Rabbit chondrocytes were co-cultured with the articular cartilage extracellular matrix/human umbilical cord Wharton gel porous scaffold for 7 days. Then, scanning electron microscopy, live-dead cell staining and hematoxylin-eosin staining were performed. In addition, rabbit chondrocytes were cultured in the extract of the articular cartilage extracellular matrix/human umbilical cord Wharton gel porous scaffold and cell culture medium for 6 days, respectively; and MTT assay was used to detect cell proliferation.
RESULTS AND CONCLUSION: The articular cartilage extracellular matrix/human umbilical cord Wharton gel porous scaffolds had a cross-section of uniform porous network structure and a vertical cross-section of the vertical tubular structure, and the pore wall was densely covered with cartilage fibers. The composite porous scaffold was positive for hematoxylin-eosin staining, safranin O staining and toluidine blue staining, and contained collagen and glycosaminoglycan ingredients. The water absorption, porosity and longitudinal compressive elastic modulus of the scaffolds were (17.418 8±0.909 0)%, (81.495 1±6.621 0)% and (2.833 3±0.456 4) kPa, respectively. After 7 days of co-culture, rabbit chondrocytes adhered to the scaffold and proliferated, and further grew into the pores of the scaffold. Moreover, the scaffold was non-toxic to the rabbit chondrocytes. To conclude, the physiochemical properties and biochemical components of articular cartilage extracellular matrix/human umbilical cord Wharton gel porous scaffolds are similar to those of natural cartilage, and the scaffold has good biocompatibility.

Key words: Extracellular Matrix, Cartilage, Tissue Engineering

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