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,
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,
,
,1
Departments of
* Microbiology,
Biochemistry and Molecular Biology, and
Pharmacology, College of Medicine, and
Institute of Mental Health, Hanyang University, Seoul, Korea;
|| Department of Physiology, College of Medicine, Yonsei University, Seoul, Korea;
¶ Department of Physiology, College of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea; and
** Laboratory of Stem Cell and Tumor Biology, Neurosurgery and Developmental Biology, Sloan Kettering Cancer Institute, New York, New York, USA
1Correspondence: Department of Biochemistry and Molecular Biology, College of Medicine, Hanyang University, #17 Haengdang-dong, Sungdong-gu, Seoul 133791, Korea. E-mail: leesh{at}hanyang.ac.kr
ABSTRACT
Neural precursor cells provide an expandable source of neurons and glia for basic and translational applications. However, little progress has been made in directing naive neural precursors toward specific neuronal fates such as midbrain dopamine (DA) neurons. We have recently demonstrated that transgenic expression of the nuclear orphan receptor Nurr1 is sufficient to drive dopaminergic differentiation of forebrain embryonic rat neural precursors in vitro. However, Nurr1-induced DA neurons exhibit immature neuronal morphologies and functional properties and are unable to induce behavioral recovery in rodent models of Parkinsons disease (PD). Here, we report on the identification of key genetic factors that drive morphological and functional differentiation of Nurr1-derived DA neurons. We show that coexpression of Nurr1, Bcl-XL, and Sonic hedgehog (SHH) or Nurr1 and the proneural bHLH factor Mash1 is sufficient to drive naive rat forebrain precursors into neurons exhibiting the biochemical, electrophysiological, and functional properties of DA neuron in vitro. On transplantation into the striatum of Parkinsonian rats, precursor cells engineered with Nurr1/SHH/Bcl-XL or Nurr1/Mash1 survived in vivo and differentiated into mature DA neurons that can reverse the behavioral deficits in the grafted animals.Park, C.-H., Kang, J. S., Shin, Y. H., Chang, M.-Y., Chung, S., Koh, H.-C., Zhu, M. H., Oh, S. B., Lee, Y.-S., Panagiotakos, G., Tabar, V., Studer, L., and Lee, S.-H. Acquisition of in vitro and in vivo functionality of Nurr1-induced dopamine neurons.
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J.-W. Shim, C.-H. Park, Y.-C. Bae, J.-Y. Bae, S. Chung, M.-Y. Chang, H.-C. Koh, H.-S. Lee, S.-J. Hwang, K.-H. Lee, et al. Generation of Functional Dopamine Neurons from Neural Precursor Cells Isolated from the Subventricular Zone and White Matter of the Adult Rat Brain Using Nurr1 Overexpression Stem Cells, May 1, 2007; 25(5): 1252 - 1262. [Abstract] [Full Text] [PDF] |
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