Journal
STEM CELLS TRANSLATIONAL MEDICINE
Volume 2, Issue 6, Pages 473-479Publisher
WILEY
DOI: 10.5966/sctm.2012-0133
Keywords
Reprogramming; Direct cell conversion; Pluripotent stem cells; Neuron; Dopamine
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Funding
- Italian Ministry of Health
- ERANET Neuron
- Cariplo Foundation
- Fondazione Grigioni per il Morbo di Parkinson
- IIT-SEED project
- Michael J. Fox Foundation
- Telethon [GGP11095]
- Fondazione Istituto Italiano di Tecnologia
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Current protocols for in vitro differentiation of human induced pluripotent stem cells (hiPSCs) to generate dopamine (DA) neurons are laborious and time-expensive. In order to accelerate the overall process, we have established a fast protocol by expressing the developmental transcription factors ASCL1, NURR1, and LMX1A. With this method, we were able to generate mature and functional dopaminergic neurons in as few as 21 days, skipping all the intermediate steps for inducting and selecting embryoid bodies and rosette-neural precursors. Strikingly, the resulting neuronal conversion process was very proficient, with an overall efficiency that was more than 93% of all the coinfected cells. hiPSC-derived DA neurons expressed all the critical molecular markers of the DA molecular machinery and exhibited sophisticated functional features including spontaneous electrical activity and dopamine release. This one-step protocol holds important implications for in vitro disease modeling and is particularly amenable for exploitation in high-throughput screening protocols.
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