中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (22): 3483-3487.doi: 10.3969/j.issn.2095-4344.2017.22.007

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

应用微纤维胶原支架构建组织工程软骨

周丽斌1,徐冰心2,丁瑞英2,韩浩伦2,王  刚2,李保卫2,王鸿南2,吴  玮2
  

  1. 1广州医科大学附属口腔医院•广州口腔疾病研究所•口腔医学重点实验室,广东省广州市  510140;2解放军第306医院耳鼻咽喉头颈外科,北京市  100101
  • 收稿日期:2017-02-17 出版日期:2017-08-08 发布日期:2017-09-01
  • 通讯作者: 吴玮,博士,教授,主任医师,解放军第306医院耳鼻咽喉头颈外科,北京市 100101
  • 作者简介:周丽斌,男,1982年生,江西省余江县人,汉族,2011年解放军第四军医大学毕业,博士,副主任医师,主要从事软骨组织工程方面的研究。
  • 基金资助:

    国家自然科学基金青年科学基金项目(81401609)

Tissue-engineered cartilage construction using microfibrillar collagen

Zhou Li-bin1, Xu Bing-xin2, Ding Rui-ying2, Han Hao-lun2, Wang Gang2, Li Bao-wei2, Wang Hong-nan2, Wu Wei2
  

  1. 1Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, Guangdong Province, China; 2Department of Otolaryngology Head and Neck Surgery, the 306th Hospital of PLA, Beijing 100101, China
  • Received:2017-02-17 Online:2017-08-08 Published:2017-09-01
  • Contact: Wu Wei, M.D., Professor, Chief physician, Department of Otolaryngology Head and Neck Surgery, the 306th Hospital of PLA, Beijing 100101, China
  • About author:Zhou Li-bin, M.D., Associate chief physician, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou 510140, Guangdong Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81401609

摘要:

文章快速阅读

 

文题释义:
微纤维胶原:Avitene™微纤维胶原从小牛真皮提取,是一种天然胶原蛋白,完全保留了生物活性和微观基本形态,是内源性凝血机制中的重要作用成分。微纤维胶原主要用于外科临床止血,可通过腔镜用于腔隙内止血,也可缝合固定用于血管性出血的止血,可长期留存于体内。大量的临床应用研究报道证明微纤维胶原具有良好的生物安全性。
组织工程:从机体获取少量的活体组织细胞,在体外进行培养扩增,然后将扩增的细胞与具有良好生物相容性、可降解性和可吸收的生物材料(支架)按一定的比例混合,使细胞黏附在生物材料(支架)上形成细胞-材料复合物;将该复合物植入机体的组织或器官病损部位,随着生物材料在体内逐渐被降解和吸收,植入的细胞在体内不断增殖并分泌细胞外基质,最终形成相应的组织或器官,从而达到修复创伤和重建功能的目的。
 
背景:寻找理想的组织工程支架材料,仍然是软骨组织工程学的重要课题之一。
目的:探讨微纤维胶原应用于软骨组织工程支架的可行性。
方法:手术切取兔耳软骨,提取原代软骨细胞,并进行扩增培养。将海绵状微纤维胶原用无菌刀片切割成小方块,取第2代软骨细胞混悬液接种于微纤维胶原支架材料上。体外培养1周后,植入裸鼠体内,观察8周后取材,进行大体、组织学、免疫组织化学等方法观察。
结果与结论:①在细胞接种过程中,湿水之后的微纤维胶原支架无明显缩水,仍然能够保持其立体形态;②体外培养1周以及植入体内8周后,无明显体积和形态变化;③裸鼠体内培养8周后形成白色半透明且富有弹性的成熟软骨块;④组织学观察可见所构建的软骨组织成熟,基质分泌旺盛,组织内仍可见未完全降解的微纤维胶原材料;⑤结果表明,微纤维胶原蛋白是一种良好的软骨组织工程支架材料。

关键词: 生物材料, 软骨生物材料, 微纤维胶原, 软骨细胞, 软骨, 组织工程, 国家自然科学基金

Abstract:

BACKGROUND: To seek for ideal scaffold materials is still an important task for cartilage tissue engineering.
OBJECTIVE: To investigate the application of the Avitene™ microfibrillar collagen hemostat sponge in cartilage tissue engineering.
METHODS: Rabbit auricular cartilage was harvested via surgical operation, and primary chondrocytes were isolated and  amplified. Microfibrillar collagen hemostat sponge was cut into small bricks. The passage 2 chondrocytes were suspended and seeded onto the spongy bricks. After 1 week of in vitro culture, the constructs were then implanted into nude mice. After 8 weeks, the specimens were collected and evaluated using gross, histological and immunohistochamical observation.
RESULTS AND CONCLUSION: During the cell seeding, the scaffold maintained its dimensions. No shrinkage was observed when the cell suspension was added. There was no considerable change in dimensions during the 1-week in vitro culture and  at 8 weeks after implantation in nude mice. At 8 weeks post-implantation, mature cartilage blocks were harvested, which were white, translucent, and flexible. Histologically, the constructs appeared to have typical mature cartilaginous tissues, with robust extracellular matrix secretion, in which the microfibrillar collagen was incompletely degraded. We conclude that the microfibrillar collagen is a favorable scaffold material for cartilage tissue engineering.

Key words: Fibrillar Collagens, Chondrocytes, Cartilage, Tissue Engineering

中图分类号: