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Preparation and characterization of decellularized tendon slices for tendon tissue engineering
Author(s) -
Ning LiangJu,
Zhang Yi,
Chen XiaoHe,
Luo JingCong,
Li XiuQun,
Yang ZhiMing,
Qin TingWu
Publication year - 2012
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.34083
Subject(s) - decellularization , tendon , extracellular matrix , materials science , tissue engineering , achilles tendon , biomedical engineering , anatomy , ultrastructure , ultimate tensile strength , microbiology and biotechnology , biology , medicine , composite material
Abstract To develop a naturally derived tendon tissue engineering scaffold with the preservation of the native ultrastructure, tensile strength, and biochemical composition of the tendon extracellular matrix (ECM), decellularized tendon slices (DTSs) were prepared using repetitive freeze/thaw of the intact Achilles tendons, frozen section, and nuclease treatment. The DTSs were characterized in the native ultrastructure, mechanical properties, biochemical composition, and cytocompatibility. Histological examination and DNA quantification analysis confirmed that cells were completely removed from tendon tissue by repetitive freeze/thaw in combination with nuclease treatment 12 h. The intrinsic ultrastructure of tendon tissue was well preserved based on scanning electron microscopy examination. The tensile strength of the DTSs was retained 85.62% of native tendon slice. More than 93% of proteoglycans (fibromodulin, biglycan) and growth factors (TGF‐β1, IGF‐1, VEGF, and CTGF) inherent in tendon ECM were preserved in the DTSs according to ELISA analysis. Furthermore, the DTSs facilitated attachment and repopulation of NIH‐3T3 fibroblasts in vitro . Overall, the DTSs are sheet scaffolds with a combination of elemental mechanical strength and tendon ECM bioactive factors that may have many potential applications in tendon tissue engineering. © 2012 Wiley Periodicals, Inc. J Biomed Mater Res Part A:, 2012.