Waisman Center, University of Wisconsin, 1500 Highland Avenue, Madison, WI 53705, USA.
Cell Mol Life Sci. 2011 Dec;68(24):3995-4008. doi: 10.1007/s00018-011-0770-y. Epub 2011 Jul 24.
Human pluripotent stem cells (PSCs), including embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs), provide a dynamic tool for revealing early embryonic development, modeling pathological processes, and developing therapeutics through drug discovery and potential cell replacement. The first step toward the utilities of human PSCs is directed differentiation to functionally specialized cell/tissue types. Following developmental principles, human ESCs, and lately iPSCs, have been effectively differentiated to region- and/or transmitter-specific neuronal and glial types, including cerebral glutamatergic, striatal γ-aminobutyric acid (GABA)-ergic, forebrain cholinergic, midbrain dopaminergic, and spinal motor neurons, as well as astrocytes and oligodendrocytes. These studies also reveal unique aspects of human cell biology, including intrinsically programmed developmental course, differential uses of transcription factors for neuroectoderm specification, and distinct responses to extracellular signals in regulating cell fate. Such information will be instrumental in translating biological findings to therapeutic development.
人类多能干细胞(PSCs),包括胚胎干细胞(ESCs)和诱导多能干细胞(iPSCs),为揭示早期胚胎发育、通过药物发现和潜在的细胞替代来模拟病理过程以及开发治疗方法提供了一个动态工具。利用人类 PSCs 的第一步是定向分化为具有特定功能的细胞/组织类型。根据发育原则,人类 ESCs 以及最近的 iPSCs 已被有效地分化为区域和/或递质特异性神经元和神经胶质类型,包括大脑谷氨酸能、纹状体γ-氨基丁酸(GABA)能、前脑胆碱能、中脑多巴胺能和脊髓运动神经元,以及星形胶质细胞和少突胶质细胞。这些研究还揭示了人类细胞生物学的独特方面,包括内在编程的发育过程、转录因子在神经外胚层特化中的不同用途,以及在调节细胞命运方面对外界信号的不同反应。这些信息将有助于将生物学发现转化为治疗开发。