Derivation, Expansion, and Motor Neuron Differentiation of Human-Induced Pluripotent Stem Cells with Non-Integrating Episomal Vectors and a Defined Xenogeneic-free Culture System
Induced pluripotent stem cells (iPSCs) generated from patient-derived somatic cells provides the opportunity for model development in order to study patient-specific disease states with the potential for drug discovery. However, use of lentivirus and exposure of iPSCs to animal-derived products limit their therapeutic utility and affect lineage differentiation and subsequent downstream functionality of iPSC derivatives. Within the context of this study, we describe a simple and practical protocol enabling the efficient reprogramming of terminally differentiated adult fibroblasts into integration-free human iPSCs (hiPSCs) using a combination of episomal plasmids with small molecules (SMs). Using this approach, there was a 10-fold increase in reprogramming efficiency over single plasmid vector-based methods. We obtained approximately 100 iPSCs colonies from 1 x 10(5) human adult dermal fibroblasts (HADFs) and achieved approximately 0.1 % reprogramming efficiencies. Concurrently, we developed a highly conducive culture system using xeno-free media and human vitronectin. The resulting hiPSCs were free of DNA integration and had completely lost episomal vectors, maintained long-term self-renewal, featured a normal karyotype, expressed pluripotent stem cell markers, and possessed the capability of differentiating into components of all three germ layers in vivo. Finally, we demonstrate that the integration-free hiPSCs could be differentiated into motor neurons under xeno-free culture conditions. This induction method will promote the derivation of patient-specific integration-free and xeno-free iPSCs and improve the strategy for motor neuron derivation. Our approach provides a useful tool for human disease models, drug screen, and clinical applications.
基金:
National Natural Science Foundation of China [81271407]; Chinese Postdoctoral Scientific Research Fund [20110490453]
第一作者单位:[1]Huazhong Univ Sci & Technol,Tongji Hosp,Tongji Med Coll,Dept Neurol,Wuhan 430030,Hubei,Peoples R China[2]Zhengzhou Univ, Affiliated Hosp 1, Dept Neurol, Zhengzhou 450000, Henan, Peoples R China
通讯作者:
推荐引用方式(GB/T 7714):
Hu Wentao,He Yongpei,Xiong Yongjie,et al.Derivation, Expansion, and Motor Neuron Differentiation of Human-Induced Pluripotent Stem Cells with Non-Integrating Episomal Vectors and a Defined Xenogeneic-free Culture System[J].MOLECULAR NEUROBIOLOGY.2016,53(3):1589-1600.doi:10.1007/s12035-014-9084-z.
APA:
Hu, Wentao,He, Yongpei,Xiong, Yongjie,Lu, Hong,Chen, Hong...&Zhang, Suming.(2016).Derivation, Expansion, and Motor Neuron Differentiation of Human-Induced Pluripotent Stem Cells with Non-Integrating Episomal Vectors and a Defined Xenogeneic-free Culture System.MOLECULAR NEUROBIOLOGY,53,(3)
MLA:
Hu, Wentao,et al."Derivation, Expansion, and Motor Neuron Differentiation of Human-Induced Pluripotent Stem Cells with Non-Integrating Episomal Vectors and a Defined Xenogeneic-free Culture System".MOLECULAR NEUROBIOLOGY 53..3(2016):1589-1600