Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (22): 3483-3487.doi: 10.3969/j.issn.2095-4344.2017.22.007

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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

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

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