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Type: Journal article
Title: 14-3-3ε and ζ regulate neurogenesis and differentiation of neuronal progenitor cells in the developing brain
Other Titles: 14-3-3epsilon and zeta regulate neurogenesis and differentiation of neuronal progenitor cells in the developing brain
Author: Toyo-oka, K.
Wachi, T.
Hunt, R.
Baraban, S.
Taya, S.
Ramshaw, H.
Kaibuchi, K.
Schwarz, Q.
Lopez, A.
Wynshaw-Boris, A.
Citation: The Journal of Neuroscience, 2014; 34(36):12168-12181
Publisher: Society for Neuroscience
Issue Date: 2014
ISSN: 0270-6474
Statement of
Kazuhito Toyo-oka, Tomoka Wachi, Robert F. Hunt, Scott C. Baraban, Shinichiro Taya, Hayley Ramshaw, Kozo Kaibuchi, Quenten P. Schwarz, Angel F. Lopez and Anthony Wynshaw-Boris
Abstract: During brain development, neural progenitor cells proliferate and differentiate into neural precursors. These neural precursors migrate along the radial glial processes and localize at their final destination in the cortex. Numerous reports have revealed that 14-3-3 proteins are involved in many neuronal activities, although their functions in neurogenesis remain unclear. Here, using 14-3-3ε/ζ double knock-out mice, we found that 14-3-3 proteins are important for proliferation and differentiation of neural progenitor cells in the cortex, resulting in neuronal migration defects and seizures. 14-3-3 deficiency resulted in the increase of δ-catenin and the decrease of β-catenin and αN-catenin. 14-3-3 proteins regulated neuronal differentiation into neurons via direct interactions with phosphorylated δ-catenin to promote F-actin formation through a catenin/Rho GTPase/Limk1/cofilin signaling pathway. Conversely, neuronal migration defects seen in the double knock-out mice were restored by phosphomimic Ndel1 mutants, but not δ-catenin. Our findings provide new evidence that 14-3-3 proteins play important roles in neurogenesis and neuronal migration via the regulation of distinct signaling cascades.
Keywords: 14-3-3; delta-catenin; neurogenesis; neuronal differentiation; neuronal migration
Rights: © 2014 The Authors
RMID: 0030026731
DOI: 10.1523/JNEUROSCI.2513-13.2014
Appears in Collections:Medicine publications

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