Chinese Journal of Tissue Engineering Research ›› 2016, Vol. 20 ›› Issue (51): 7642-7647.doi: 10.3969/j.issn.2095-4344.2016.51.006

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Chemical extraction method versus detergent-enzymatic method for the preparation of tissue-engineered trachea matrix

Jiang Yuan, Xu Yan-fei, Zhang Si-quan, Shi Hong-can   

  1. Department of Thoracic Surgery, Medical College of Yangzhou University, Yangzhou 225001, Jiangsu Province, China
  • Received:2016-09-16 Online:2016-12-09 Published:2016-12-09
  • Contact: Shi Hong-can, Chief physician, Professor, Doctoral supervisor, Department of Thoracic Surgery, Medical College of Yangzhou University, Yangzhou 225001, Jiangsu Province, China
  • About author:Jiang Yuan, Department of Thoracic Surgery, Medical College of Yangzhou University, Yangzhou 225001, Jiangsu Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81170014, 81370118; the College Student Innovation Program of Jiangsu Province, No. 201511117033Z; the Talent Program of Yangzhou University, No. 201431

Abstract:

BACKGROUND: Acellular tracheal matrix is similar to the native trachea with structure and biological performance preserved after decellularization, and it is an important aim in tissue engineering to find an effective method of decellularization.
OBJECTIVE: To select the optimal decellularization method through comparing chemical extraction method with detergent-enzymatic method for preparing rabbit tissue engineering trachea matrix.
METHODS: Thirty tracheas from New Zealand white rabbits were randomly divide into three groups. Twenty of rabbit tracheas were subjected to decellularization using 2% TritonX-100 combined with deoxyribonuclease I and ribonuclease (chemical extraction method group), and sodium deoxycholate combined with deoxyribonuclease I (detergent-enzymatic group), respectively. The other ten were given no intervention as controls. Samples were collected and observed by hematoxylin-eosin staining, Masson-trichrome staining, safranin O staining, DAPI staining and scanning electronic microscope.
RESULTS AND CONCLUSION: Hematoxylin-eosin staining demonstrated that compared with the control group, almost all cellular components of the mucosal epithelium were removed in the detergent-enzymatic and chemical extraction groups, and there were few remnant chondrocytes. Masson-trichrome staining indicated that compared with the control group, components of the mucosal layer chondrocytes in the chemical extraction and detergent-enzymatic groups were completely removed, with only part of remained chondrocytes in the cartilage zone. Glycosaminoglycan was slightly decreased both in the chemical extraction and detergent-enzymatic groups shown by Safranin O staining, but more reduction was found in the chemical extraction group. DAPI staining reveled that only a small amount of cartilage cells remained in the dense layer of cartilage and lacuna both in this two methods. Scanning electronic microscope showed that using the detergent-enzymatic method there were the hierarchical structures of native trachea, but slight disruption using the chemical extraction method. In conclusion, decellularized rabbit trachea matrix obtained by detergent-enzymatic method is better, with little disruption to the matrix.

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: Extracellular Matrix, Trachea, Tissue Engineering

CLC Number: