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First published online 14 September 2005
doi: 10.1242/dev.02037
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1 Developmental Genetics Program and the Department of Cell Biology, The
Skirball Institute of Biomolecular Medicine, New York University Medical
Center, 540 First Avenue, New York, NY 10016, USA
2 Center for Basic Neuroscience, UT Southwestern Medical Center, 5323 Harry
Hines Boulevard, Dallas, TX 75390-9111, USA
* Author for correspondence (e-mail: fishell{at}saturn.med.nyu.edu)
Accepted 10 August 2005
The existence of stem cells in the adult nervous system is well recognized; however, the potential of these cells is still widely debated. We demonstrate that neural stem cells exist within the embryonic and adult cerebellum. Comparing the potential of neural stem cells derived from the forebrain and cerebellum, we find that progeny derived from each of these brain regions retain regional character in vitro as well as after homotopic transplantation. However, when ectopically transplanted, neurosphere-derived cells from either region are largely unable to generate neurons. With regard specifically to embryonic and adult cerebellar stem cells, we observe that they are able to give rise to neurons that resemble different select classes of cerebellar subclasses when grafted into the perinatal host cerebellum. Most notably, upon transplantation to the perinatal cerebellum, cerebellar stem cells from all ages are able to acquire the position and mature electrophysiological properties of cerebellar granule cells.
Key words: Cerebellum, Neural stem cell, Forebrain, Mouse
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