中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (8): 1179-1184.doi: 10.3969/j.issn.2095-4344.2014.08.006

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

微球化人脐带Wharton胶间充质干细胞移植裸鼠皮下构建异位软骨

杨建华1,刘舒云2,赵  鹏3,卢世璧2,张  莉2,黄靖香2,赵  斌2,许文静2,郭全义2   

  1. 1佳木斯大学附属第一医院,黑龙江省佳木斯市  154002;2解放军总医院骨科研究所,北京市  100853;3呼伦贝尔市人民医院,内蒙古自治区呼伦贝尔市  021008
  • 收稿日期:2013-12-03 出版日期:2014-02-19 发布日期:2014-02-19
  • 通讯作者: 郭全义,博士,副主任医师,解放军总医院骨科研究所,北京市 100853
  • 作者简介:杨建华,男,1969年生,黑龙江省鸡西市人,汉族,硕士,主任医师,主要从事关节骨科研究。
  • 基金资助:

    国家自然科学基金资助项目(81000810,81071458);863计划项目(2102AA020502),国家大学生创新项目资助

Cartilage construction in nude mice with microencapsulated stem cells derived from human umbilical cord Wharton’s jelly

Yang Jian-hua1, Liu Shu-yun2, Zhao Peng3, Lu Shi-bi2, Zhang Li2, Huang Jing-xiang2, Zhao Bin2,  Xu Wen-jing2, Guo Quan-yi2   

  1. 1First Department of Orthopedics, First Affiliated Hospital, Jiamusi University, Jiamusi 154002, Heilongjiang Province, China; 2Institute of Orthopedics, General Hospital of Chinese PLA, Beijing 100853, China; 3People’s Hospital of Hulunbeier City, Hulunbeier 021008, Inner Mongolia Autonomous Region, China
  • Received:2013-12-03 Online:2014-02-19 Published:2014-02-19
  • Contact: Guo Quan-yi, M.D., Associate chief physician, Institute of Orthopedics, General Hospital of Chinese PLA, Beijing 100853, China
  • About author:Yang Jian-hua, Master, Chief physician, First Department of Orthopedics, First Affiliated Hospital, Jiamusi University, Jiamusi 154002, Heilongjiang Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81000810, 81071458; National High-Tech Research and Development Program of China (863 Program), No. 2102AA020502; the National Innovation Experiment Program for University Students

摘要:

背景:软骨细胞外基质具有众多的信号分子蛋白和因子,其成分和特性最接近天然软骨组织,因而其很可能是构建组织工程软骨的最理想原料。
目的:探讨海藻酸钙-软骨细胞外基质混合凝胶微球复合人脐带Wharton胶间充质干细胞在裸鼠皮下异位构建组织工程软骨的可行性。
方法:制备软骨细胞外基质微丝悬液,将人脐带Wharton胶间充质干细胞接种于海藻酸钙-软骨细胞外基质混合凝胶微球中体外培养后植入裸鼠背部皮下(实验组),以人脐带Wharton胶间充质干细胞混合于单纯藻酸盐凝胶微球作为对照组,于4周后取材进行大体和组织学苏木精-伊红、甲苯胺蓝、番红O及Ⅱ型胶原免疫组化观察。
结果与结论:体外培养时微球中干细胞呈球形软骨细胞样形态,生长、增殖情况良好;实验组术后第4周取材可见外形呈类软骨样组织块,甲苯胺蓝、番红O及Ⅱ型胶原免疫组化染色阳性,镜下观察可见大量类软骨样细胞及类软骨陷窝样结构,植入的混合凝胶微球周围组织无明显炎症反应;对照组显示微球部分降解,周围仅有少量炎症细胞及淋巴细胞。结果可见海藻酸钙-软骨细胞外基质具有良好的组织相容性,复合干细胞形成的微球植入裸鼠皮下可以构建为类软骨样组织。


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

关键词: 生物材料, 软骨生物材料, 人脐带Wharton胶, 间充质干细胞, 藻酸盐, 软骨细胞外基质, 国家自然科学基金

Abstract:

BACKGROUND: Cartilage extracellular matrix with a large number of signaling molecule proteins and factors is likely to be an ideal material for tissue engineering cartilage.
OBJECTIVE: To investigate the possibility of calcium alginate and cartilage extracellular matrix combined with microencapsulated stem cells derived from human umbilical cord Wharton’s jelly to construct ectopic tissue-engineered cartilage in nude mice.
METHODS: Microfilament suspension of the cartilage extracellular matrix was prepared. Human stem cells derived from Wharton’s jelly of the umbilical cord were inoculated in to calcium alginate and cartilage extracellular matrix gel microspheres as experimental group. Stem cells derived from human umbilical cord Wharton’s jelly were incubated in simple alginate gel microspheres as control group. After in vitro culture, the microspheres were implanted into  the dorsal subcutaneous tissue of nude mice. Samples were taken after 4 weeks, respectively, for gross and histological observation.
RESULTS AND CONCLUSION: The stem cells exhibited parallel-chondrocyte morphology in microspheres, which grew and proliferated quite well during in vitro culture. A new parallel-cartilaginous tissue was found in the subcutaneous tissue 4 weeks after surgery in the experimental group, and the tissue was positive for hematoxylin-eosin, safranine O, toluidine blue and collagen II. A large number of parallel-chondrocytes and cartilage lacuna-like structures were observed under a microscope with no obvious inflammatory reaction around the microspheres. The control group showed the partial degradation of microspheres, surrounded by only a small number of inflammatory cells and lymphocytes. Calcium alginate and cartilage extracellular matrix microspheres have a rather good histocompatibility which can be used to construct parallel-cartilaginous tissues by implanting stem cell-microspheric compound into the subcutaneous tissue of nude mice.


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


全文链接:

Key words: umbilical cord, mesenchymal stem cells, alginates, cartilage, extracellular matrix, tissue engineering

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