Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (42): 6832-6837.doi: 10.3969/j.issn.2095-4344.2015.42.020

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How to build a tissue-engineered intervertebral disc annulus fibrosus that is more close to the natural one?

Yuan De-chao1, 2, Chen Zhu1, Feng Da-xiong2, Feng Gang1, 2   

  1. 1Institute of Tissue Engineering and Stem Cells, Second Clinical School of North Sichuan Medical College, Nanchong Central Hospital, Nanchong 637000, Sichuan Province, China; 2Sichuan Medical University, Luzhou 646000, Sichuan Province, China
  • Online:2015-10-08 Published:2015-10-08
  • Contact: Feng Gang, Professor, Master’s supervisor, Institute of Tissue Engineering and Stem Cells, Second Clinical School of North Sichuan Medical College, Nanchong Central Hospital, Nanchong 637000, Sichuan Province, China; Sichuan Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Yuan De-chao, Studying for master’s degree, Physician, Institute of Tissue Engineering and Stem Cells, Second Clinical School of North Sichuan Medical College, Nanchong Central Hospital, Nanchong 637000, Sichuan Province, China; Sichuan Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81171472, 81201407; the Innovation Team Program of Sichuan Provincial Education Department, No. 13TD0030; the Major Culture Project of Sichuan Provincial Education Department, No. 15CZ0021; the Scientific Support Plan of Nanchong City, No. 14A0021

Abstract:

BACKGROUND: Tissue-engineered intervertebral disc has provided a new biological therapeutic approach for intervertebral disc degeneration. Tissue-engineered annulus fibrosus is one key step of constructing a complete tissue-engineered intervertebral disc.
OBJECTIVE: To sum up the research progress of tissue-engineered annulus fibrosus from the following aspects: structural features, scaffold materials, seed cells.
METHODS: PubMed database and Wanfang database (2000-2015) were retrieved by the key words of “tissue engineering, intervertebral disc, annulus fibrosus, seed cell, scaffold, construction” in Chinese and in English, respectively. According to inclusion and exclusion criteria, 48 literatures were involved for summarization. 
RESULTS AND CONCLUSION: Previous studies about tissue-engineered annulus fibrosus only focused on cell adhesion, proliferation and extracellular matrix secretion on the scaffold. Currently, tissue-engineered annulus fibrosus exhibit similar features to the natural annulus fibrosus in the following aspects: cell function, tissue structure and mechanical features, and relevant animal experiments have achieved certain results in animal experiments. However, it is still difficult to build a tissue-engineered annulus fibrosus entirely similar to the natural one, and we need to further improve scaffold materials, culture conditions, collection of seed cells. The current strategies of annulus fibrosus construction still focus on single phase of scaffold, and the biphasic scaffold and complete intervertebral disc scaffold will be the trend of the researches. Technology of induced differentiation of stem cells provides a broach source of seed cells for tissue-engineered annulus fibrosus.
中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words:  Intervertebral Disk, Stents, Stem Cells