Generation of Integration-free and Region-Specific Neural Progenitors from Primate Fibroblasts
Jianfeng Lu,
Huisheng Liu,
Cindy Tzu-Ling Huang,
Hong Chen,
Zhongwei Du,
Yan Liu,
Mohammad Amin Sherafat,
Su-Chun Zhang
Affiliations
Jianfeng Lu
Departments of Neuroscience and Neurology, School of Medicine and Public Health, Waisman Center, University of Wisconsin, Madison, Madison, WI 53705, USA
Huisheng Liu
Departments of Neuroscience and Neurology, School of Medicine and Public Health, Waisman Center, University of Wisconsin, Madison, Madison, WI 53705, USA
Cindy Tzu-Ling Huang
Departments of Neuroscience and Neurology, School of Medicine and Public Health, Waisman Center, University of Wisconsin, Madison, Madison, WI 53705, USA
Hong Chen
Departments of Neuroscience and Neurology, School of Medicine and Public Health, Waisman Center, University of Wisconsin, Madison, Madison, WI 53705, USA
Zhongwei Du
Departments of Neuroscience and Neurology, School of Medicine and Public Health, Waisman Center, University of Wisconsin, Madison, Madison, WI 53705, USA
Yan Liu
Departments of Neuroscience and Neurology, School of Medicine and Public Health, Waisman Center, University of Wisconsin, Madison, Madison, WI 53705, USA
Mohammad Amin Sherafat
Departments of Neuroscience and Neurology, School of Medicine and Public Health, Waisman Center, University of Wisconsin, Madison, Madison, WI 53705, USA
Su-Chun Zhang
Departments of Neuroscience and Neurology, School of Medicine and Public Health, Waisman Center, University of Wisconsin, Madison, Madison, WI 53705, USA
Postnatal and adult human and monkey fibroblasts were infected with Sendai virus containing the Yamanaka factors for 24 hr, then they were cultured in a chemically defined medium containing leukemia inhibitory factor (LIF), transforming growth factor (TGF)-β inhibitor SB431542, and glycogen synthase kinase (GSK)-3β inhibitor CHIR99021 at 39°C for inactivation of the virus. Induced neural progenitor (iNP) colonies appeared as early as day 13 and can be expanded for >20 passages. Under the same defined condition, no induced pluripotent stem cell (iPSC) colonies formed at either 37°C or 39°C. The iNPs predominantly express hindbrain genes and differentiate into hindbrain neurons, and when caudalized, they produced an enriched population of spinal motor neurons. Following transplantation into the forebrain, the iNP-derived cells retained the hindbrain identity. The ability to generate defined, integration-free iNPs from adult primate fibroblasts under a defined condition with predictable fate choices will facilitate disease modeling and therapeutic development.
