摘要
目的:如何促进神经干细胞的增殖并诱导其向目的细胞类型分化是神经科学界研究的热点。本文就碱性成纤维细胞生长因子和表皮生长因子在神经干细胞增殖、分化中的调节作用进行综述。资料来源:应用计算机检索PUBMED1998-01/2006-03期间的相关文章,检索词为“bFGF,EGF,nerve stem cells”,并限定文章语言种类为English。同时计算机检索中国期刊全文数据库2000-01/2006-03期间的相关文章,检索词为“碱性成纤维细胞生长因子,表皮生长因子,神经干细胞”,并限定文章语言种类为中文。资料选择:对资料进行初审,并查看每篇文献后的引文。纳入标准:文章所述内容应与碱性成纤维细胞生长因子/表皮生长因子在神经干细胞增殖、分化中的调节作用研究相关。排除标准:重复研究或Meta分析类文章。资料提炼:共收集到78篇相关文献,32篇文献符合纳入标准,排除的46篇文献为内容陈旧或重复。符合纳入标准的32篇文献中,8篇涉及神经干细胞的研究现状,10篇涉及碱性成纤维细胞生长因子对神经干细胞增殖、分化的作用及其机制,4篇涉及表皮生长因子对神经干细胞增殖、分化的作用及其机制,8篇涉及碱性成纤维细胞生长因子与表皮生长因子合用对神经干细胞增值、分化的影响,5篇涉及碱性成纤维细胞生长因子和表皮生长因子对神经干细胞作用的比较。资料综合:①神经干细胞具有自我更新能力,在不同微环境中可增殖、分化为不同干细胞以及不同类型的成熟组织细胞,微环境中的多种细胞因子对其分化方向起着决定性的作用。②碱性成纤维细胞生长因子具有强大的促神经干细胞增殖作用,可激活中枢神经系统不同区域的神经元前体细胞潜在的再生能力,细胞增殖或分化呈碱性成纤维细胞生长因子浓度依赖性。③表皮生长因子既能促进神经干细胞的生长,也可促进其分化为神经元及神经胶质细胞。表皮生长因子促细胞增殖作用也呈浓度依赖性。④大多神经干细胞培养中都联合应用碱性成纤维细胞生长因子与表皮生长因子,从而提高神经干细胞增殖和分化的效率。⑤目前对表皮生长因子和碱性成纤维细胞生长因子的作用差异认识不统一。结论:碱性成纤维细胞生长因子和表皮生长因子都具有较强的促进神经干细胞增殖和分化的作用,均属于神经干细胞培养中重要的神经促生长因子,其促细胞增殖和分化作用呈浓度依赖性。
OBJECTIVE： How to promote the generation of neural stem cells （NSCs） and induce them differentiate into the goal cell type has been the focus of neuroscience. In this article, we review the adjustment of basic fibroblast growth factor （bFGF） and epidermal growth factor （EGF） to the proliferation and differentiation of NSCs. DATA SOURCES： A computer-based online search of Medline database was undertaken to identify the related articles published in English from January 1998 to March 2006 by using the keywords of ＂bFGF, EGF, nerve stem cells＂. At the same time, Chinese relevant articles were searched in China National Knowledge Infrastruction published between January 2000 and March 2006 with the same keywords in Chinese. STUDY SELECTION： The data were selected firstly to look over the citations of every literature. Inclusive criteria： Articles related to the effect of bFGF and EGF on the proliferation and differentiation of NSCs. Exclusive criteria： Duplicate research or Meta analysis. DATA EXTRACTION： A total of 78 related articles were collected, of which 32 accorded with the inclusive criteria and 46 with duplicate or old contents literatures were eliminated. Among the 32 literatures, 8 involved in the research status of NSCs, 10 about the effect of bFGF on the proliferation and differentiation of NSCs and the mechanism, 4 involved in the effect of EGF on the proliferation and differentiation of NSCs and the mechanism, respectively, 8 related to the effect of bFGF and EGF together, and 5 related to the comparison of the effect of bFGF and EGF. DATA SYNTHESIS： （1）NSCs are self-renewed, and can differentiate into different stem cells and mature tissue cells in different microenvironment. Many cytokines in the microenvironment play essential roles in the differentiation direction of NSCs. （2）bFGF has strong improvement effect on the proliferation of NSCs and can activate the potential regeneration capacity of neuronal precursor cell in distinct areas of central nervous system, proliferation and differentiation of cells present bFGF concentration dependent. （3）EGF can improve the growth of NSCs, and promote them differentiate into neuron and glial cells; its effect of facilitating cell proliferation also presents concentration dependent. （4）To elevate the efficacy of proliferation and differentiation of NSCs, allied application of bFGF and EGF is usual in NSCs culture. （5）There is not a unified cognition to the effect difference of bFGF and EGF. CONCLUSION： bFGF and EGF have powerful effect to improve the proliferation and differentiation of NSCs; therefore, both of them are important neural somatomedin. Moreover, their effects present concentration dependent.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2007年第7期1345-1348,共4页
Journal of Clinical Rehabilitative Tissue Engineering Research
