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. 2010 Oct;13(10):1181-9.
doi: 10.1038/nn.2646.

SOX9 induces and maintains neural stem cells

Charlotte E Scott  1 , Sarah L Wynn, Abdul Sesay, Catarina Cruz, Martin Cheung, Maria-Victoria Gomez Gaviro, Sarah Booth, Bo Gao, Kathryn S E Cheah, Robin Lovell-Badge, James Briscoe
Affiliations

SOX9 induces and maintains neural stem cells

Charlotte E Scott et al. Nat Neurosci. 2010 Oct.

Abstract

Neural stem cells (NSCs) are uncommitted cells of the CNS defined by their multipotentiality and ability to self renew. We found these cells to not be present in substantial numbers in the CNS until after embryonic day (E) 10.5 in mouse and E5 in chick. This coincides with the induction of SOX9 in neural cells. Gain- and loss-of-function studies indicated that SOX9 was essential for multipotent NSC formation. Moreover, Sonic Hedgehog was able to stimulate precocious generation of NSCs by inducing Sox9 expression. SOX9 was also necessary for the maintenance of multipotent NSCs, as shown by in vivo fate mapping experiments in the adult subependymal zone and olfactory bulbs. In addition, loss of SOX9 led ependymal cells to adopt a neuroblast identity. These data identify a functional link between extrinsic and intrinsic mechanisms of NSCs specification and maintenance, and establish a central role for SOX9 in the process.

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