摘要
背景:干细胞疗法是目前研究的热点,已经在各种临床学科中得到应用,但在治疗缺血性心脏病方面收效甚微,主要是因为移植到缺血心肌部位的干细胞存活率较低,新型组织工程材料的发现和应用使人间充质干细胞在心肌缺血区域的存活率得到了提高,这让人们看到了人间充质干细胞在治疗缺血心肌中的广阔应用前景。目的:归纳并总结目前常见的3种不同来源组织工程材料在干细胞治疗缺血性心脏病的研究进展,提出未来的应用展望。方法:应用英文检索词“mesenchymal stem cells,biological hydrogel nanometer material,3D printing,nanostructured material”检索PubMed、Web of Science数据库,应用中文检索词“干细胞,缺血性心脏病,组织工程,水凝胶,3D打印,纳米材料”检索CNKI、万方、维普数据库;检索2010-2021年期间有关组织工程技术治疗缺血性心肌病的相关文献,排除重复研究、个案报告或Meta分析类文章,纳入符合标准的74篇文献进行综述。结果与结论:①可供选择的明胶水凝胶基底材料和制备技术多种多样,同时也是目前研究最成熟的支架材料,是未来最有望率先成为搭载干细胞治疗缺血性心脏病的支架材料。②纳米材料有着独特的理化性质,借助纳米材料构建的支架,不但能促进人间充质干细胞在缺血心肌处的存活和增殖,并且能使其更好地发挥旁分泌作用,从而起到治疗心肌缺血的效果。③新兴的3D打印技术,可以以水凝胶、纳米材料、干细胞为原材料,打印出所需要的细胞、血管、心肌、心室和心房甚至是“完整”心脏,但是距离临床的应用还需进一步发展。④在未来展望方面,大量的体外组织细胞实验有助于建立更加完善的支架体系,寻找最适合人间充质干细胞生存的细胞外基质环境;其次,构建标准化的心肌缺血动物模型有助于在基础研究方面深入了解干细胞在不同支架材料中的生理学表现,而临床应用需要未来多中心大样本的动物实验数据支撑。
BACKGROUND:Stem cell therapy is a hot spot and has been applied in various clinical disciplines at present,but it has little effect in the treatment of ischemic heart disease,mainly because the survival rate of stem cells transplanted into ischemic myocardium is very low.The discovery and application of new tissue engineering materials help to improve the survival rate of human mesenchymal stem cells in ischemic myocardium,which makes people see the broad application prospect of human mesenchymal stem cells in the treatment of ischemic myocardium.OBJECTIVE:To summarize the research progress of three kinds of common tissue engineering scaffolds in stem cell therapy for ischemic heart disease and put forward the future application prospects.METHODS:PubMed and Web of Science databases were used.The English search words were“mesenchymal stem cells,biological hydrogel nanometer material,3D printing,nanostructured material”.CNKI,Wanfang,and VIP databases were applied,and the Chinese keywords were“stem cells,ischemic heart disease,tissue engineering,hydrogel,3D printing,nano materials”.Relevant articles on tissue engineering technology in the treatment of ischemic heart disease from 2010 to 2021 were retrieved,excluding duplicate studies,case reports or meta-analysis articles,and finally 74 articles meeting the criteria were included for review.RESULTS AND CONCLUSION:(1)There are many kinds of gelatin gel substrate materials and preparation technologies available.It is also the most mature tissue engineering scaffold material and the most promising scaffold material for carrying stem cells to treat ischemic heart disease in the future.(2)Nano materials have unique physical and chemical properties.Scaffolds constructed with nano materials can not only promote the survival and proliferation of human mesenchymal stem cells in ischemic myocardium,but also make human mesenchymal stem cells well play its paracrine role,thus it plays a role in the treatment of myocardial ischemia.(3)The emerging 3D printing technology can use hydrogels,nano materials,and stem cells as raw materials to print the required cells,blood vessels,myocardium,ventricles,atria,and even“complete”hearts,but it still needs further development from clinical application.(4)In terms of future prospects,a large number of in vitro tissue and cell experiments help to establish a more perfect scaffold system and find the most suitable extracellular matrix environment for the survival of human mesenchymal stem cells.The construction of a standardized animal model of myocardial ischemia is conducive to in-depth understanding of the physiological performance of stem cells in different scaffold materials in basic research,and clinical application needs the support of animal experimental data from multiple centers and large samples in the future.
作者
强勇嘉
曾宽
张彬
关睿聪
刘竹轩
许浩华
张心一
杨艳旗
Qiang Yongjia;Zeng Kuan;Zhang Bin;Guan Ruicong;Liu Zhuxuan;Xu Haohua;Zhang Xinyi;Yang Yanqi(Department of Cardiovascular Surgery,The Second Affiliated Hospital of Sun Yat-sen University(Sun Yat-sen Memorial Hospital of Sun Yat-sen University),Guangzhou 510030,Guangdong Province,China)
出处
《中国组织工程研究》
CAS
北大核心
2023年第19期3108-3116,共9页
Chinese Journal of Tissue Engineering Research
基金
中山大学孙逸仙纪念医院“三个三”临床科学家(1320900026),项目负责人:杨艳旗
国家自然科学基金(青年基金)(81600245),项目负责人:曾宽
广东省自然科学基金(2022A1515011041),项目负责人:曾宽。
关键词
人间充质干细胞
缺血性心脏病
组织工程
3D打印
水凝胶
纳米材料
human mesenchymal stem cell
ischemic heart disease
tissue engineering
3D printing
hydrogel
nanomaterial
