从人胚胎干细胞畸胎瘤中有效获取间充质干细胞和神经前体细胞(英文)  

Efficient Derivation of Mesenchymal Stem Cells and Neural Precursor Cells From Human Embryonic Stem Cells Through Teratoma Formation

作　　者：曾桥[1] 安世民[1] 潘乾[1] 夏昆[1] 夏家辉[1] 张灼华[1,5] 孙毅 范国平 

机构地区：[1]中南大学医学遗传学国家重点实验室,长沙410008 [2]Department of Human Genetics, David Geffen School of Medicine, University of California at Los Angeles, 695 Charles Young Drive South, Los Angeles CA 90095, USA [3]Mental Retardation Research Center, University of California at Los Angeles, 695 Charles Young Drive South, Los Angeles CA 90095, USA [4]Department of Molecalar and Medical Pharmocology, Department of Psychiatry and Behavioral Sciences, and Semel Institute of Neuroscience and Human Behavior, University of California at Los Angeles, 695 Charles Young Drive South, Los Angeles CA 90095, USA [5]Burnham Institute for Medical Research, 10901 North Torrey Pines Road, La Jolla CA 92037, USA

出　　处：《生物化学与生物物理进展》2008年第12期1417-1424,共8页Progress In Biochemistry and Biophysics

基　　金：supported by grants from National Basic Research Program of China(2004CB518601, 2004CB518800);The National Natural Science Foundation of China (30730052, 30630062)~~

摘　　要：通过人胚胎干细胞(human embryonic stem cells,hESC)体外分化方法和畸胎瘤形成可以分化获得多种成体细胞.但目前尚不清楚是否可以从 hESCs 畸胎瘤中分离某些特异性细胞.通过体外筛选方法,有效地从 hESCs 畸胎瘤中分离出神经前体细胞(neural progenitor cells,NPCs)和间充质干细胞(mesenchymal stem cells,MSCs).这种 hESCs 畸胎瘤来源的 NPCs 和MSCs 与体内神经前体细胞和间充质干细胞有着相似的分子标记和特性,并具有进一步的分化潜能——分别可以诱导成为神经元、神经胶质细胞、脂肪细胞和骨骼细胞等.根据人胚胎干细胞畸胎瘤中含有不同分化阶段的外胚层、中胚层和内胚层的组织或细胞,认为人胚胎干细胞畸胎瘤可以作为另一个细胞来源以获取多种(包括人胚胎干细胞体外分化难以得到的)各种前体 / 干细胞和终末分化细胞.Many somatic cell types were obtained by in vitro differentiation or teratoma formation of human embryonic stem cells （hESCs）. However, it is unclear whether specific cell types can be obtained from hESCs-derived teratoma. It was reported that many kinds of cells, including neural progenitor/precursor cells （NPCs） and mesenchymal stem cells （MSCs） were isolated efficiently from the teratoma of hESCs through in vitro selection. The teratoma-derived NPCs and MSCs showed specific characteristics of molecular markers similar to the primary NPCs and MSCs. Moreover, these teratoma-induced NPCs and MSCs can be further induced to differentiate into neurons, astrocytes, or adipose and bone cells, reflecting their inherent multi-potencies. Given that teratoma normally contains a mixture of ectoderm, mesoderm, and endoderm lineage ceils at different differentiation stage, it was suggested that hESCs-derived teratoma could be an alternative source to generate a variety of uncommitted progenitor cells or terminally differentiated somatic cells, which may be otherwise difficult to obtain through direct in vitro differentiation.

关 键 词：人胚胎干细胞 畸胎瘤 间充质干细胞 神经前体细胞 

分 类 号：Q291[生物学—细胞生物学] R329.2[医药卫生—人体解剖和组织胚胎学]