高分子组织工程材料在组织工程中的应用

学术背景:组织工程学的发展为组织或器官的修复与再建提供了可能,组织工程及高分子材料的研究进展值得探讨.目的:从生物相容性的角度出发论述了组织工程的研究内容及高分子组织工程材料在组织工程中的应用.检索策略:由该论文的研究人员应用计算机检索Pubmed数据库1990-01/2007-12相关文献,检索词"tissue engineering,tissue engineering materials,Polymers materials,bio-compatibility,bio-compatibility materials,cell-compatibility,cell-compatibility materials",并限定文章语言种类为English,同时计算机检索万方数据库1990-01/2007-12期间的相关文章,检索词为"组织工程;组织工程材料;高分子材料;生物相容性材料;生物相容性;细胞相容性;组织相容性",并限定文章语言种类为中文.共收集到81篇相关文献,对资料进行初审.纳入标准:文章内容应与生物相容性组织工程材料相关.排除标准:重复研究或Meta分析类文章.30篇文献符合纳入标准,排除的51篇文献为内容陈旧或重复.符合纳入标准的30篇文献中,19篇涉及生物相容性,11篇涉及细胞相容性材料.文献评价:文献的来源主要是Pubmed数据库及万方数据库.共得到论著类文章25篇,综述类文章5篇.资料综合:组织工程研究的内容包括种子细胞种植、生物材料植入及细胞移植.细胞的研究包括基因重组技术,将同种、自体或异种的组织体外分解成细胞后培养、增殖后进行构建.材料的研究主要集中于如何将材料与活细胞建成组织工程构建,即具有生物功能的活性材料,由于组织工程材料应具备最佳的材料与细胞界面反应效果,因此设计具有化学分子水平、三维分子水平的细胞/材料杂化界面,具有宏观三维分子水平、符合生物力学要求的装置是组织工程材料研究的核心.高分子材料由于具有良好的物理机械性能、分子结构更接近于生物体而广泛用作生物材料,并在组织工程领域发挥着重要作用.结论:研究开发具有良好组织相容性的材料是组织工程发展的基石,高分子材料具有较好的性能及接近于生物体的分子结构在组织工程中应用广泛.

Application of polymer biomaterials in the tissue engineering

BACKGROUND: The development of tissue engineering has provided a possibility for repairing and reconstructing tissues or organs. However, studies on biomedical tissue-engineered and polymer tissue-engineered materials need to be investigated. OBJECTIVE: To clarify the content of tissue engineering and the application of polymer material in tissue engineering from the point of biocompatibility. RETRIEVAL STRATEGY: Using the terms "tissue engineering, tissue engineering materials, Polymers materials, bio-compatibility, bio-compatibility materials, cell-compatibility, cell-compatibility materials", we retrieved PubMed database to identify studies published between January 1990 and December 2007 in the English language. At the same time, we searched Wanfang database with the same terms in the Chinese language. After primarily selected, 81literatures were kept. Inclusive criteria: studies, whose contents are related to biocompatibility of tissue-engineered materials. Exclusive criteria: repetitive studies or Meta analysis. Thirty literatures corresponded to the inclusive criteria, and fifty-one were rejected due to obsolete or repetitive contents. Among the 30 included literatures, 19 were about biocompatibility, and the remaining 11 about cellular compatibility materials. LITERATURE EVALUATION: The included studies were mainly from Pubmed database and Wanfang database. A total of 25 treatises and 5 reviews were kept. DATA SYNTHESIS: The content of tissue engineering consisted of seeded cell inoculation, biomaterial implanting and cell transplantation. Allogenic, autogenous, and xenogenous tissues were in vitro broken into cells, and then reconstructed through inoculation and proliferation by gene reconstruction technique. Much attention should be focused on how to reconstruct tissue-engineered materials with materials and living cells, I.e. To reconstruct active materials with biological functions. Tissue-engineered materials should have the best interface reaction effect between material surface and cells. Therefore, the core of studying tissue-engineered materials is to design a device, which has chemical molecular level and three-dimensional molecular level cell/material mixed surface, and also has a three-dimensional molecular level appearance corresponding to biomechanical requirement. Polymer materials have good physical mechanical functions, and their molecular structures are closer to living body. Therefore, polymer materials are widely used as biomaterials and exert an important role in the field of tissue engineering. CONCLUSION:To study biomaterials with good tissue compatibility is the basis for tissue engineering development. Polymer materials are widely used in the tissue engineering due to their good property and molecular structure closer to living body.