Bone tissue engineering with porous hydroxyapatite ceramics

被引:317
作者
Yoshikawa H. [1 ]
Myoui A. [1 ]
机构
[1] Department of Orthopaedics, Osaka University, Graduate School of Medicine, Suita 565-0871
关键词
Bone; Hydroxyapatite ceramics; Mesenchymal cell; Tissue engineering;
D O I
10.1007/s10047-005-0292-1
中图分类号
学科分类号
摘要
The main principle of bone tissue engineering strategy is to use an osteoconductive porous scaffold in combination with osteoinductive molecules or osteogenic cells. The requirements for a scaffold in bone regeneration are: (1) biocompatibility, (2) osteoconductivity, (3) interconnected porous structure, (4) appropriate mechanical strength, and (5) biodegradability. We recently developed a fully interconnected porous hydroxyapatite (IP-CHA) by adopting the "form-gel" technique. IP-CHA has a three-dimensional structure with spherical pores of uniform size that are interconnected by window-like holes; the material also demonstrated adequate compression strength. In animal experiments, IP-CHA showed superior osteoconduction, with the majority of pores filled with newly formed bone. The interconnected porous structure facilitates bone tissue engineering by allowing the introduction of bone cells, osteotropic agents, or vasculature into the pores. In this article, we review the accumulated data on bone tissue engineering using the novel scaffold, focusing especially on new techniques in combination with bone morphogenetic protein (BMP) or mesenchymal stem cells. © The Japanese Society for Artificial Organs 2005.
引用
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页码:131 / 136
页数:5
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