Cited by 76Neurogenesis and neuroplasticity mechanismsAxon Guidance and Neuronal SignalingDevelopmental Biology and Gene Regulation

GSK-3 signaling in developing cortical neurons is essential for radial migration and dendritic orientation

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Morgan-Smith, Meghan, Wu, Yaohong, Zhu, Xiaoqin, Pringle, Julia, Snider, William D·2014·eLife

Abstract

GSK-3 is an essential mediator of several signaling pathways that regulate cortical development. We therefore created conditional mouse mutants lacking both GSK-3α and GSK-3β in newly born cortical excitatory neurons. Gsk3-deleted neurons expressing upper layer markers exhibited striking migration failure in all areas of the cortex. Radial migration in hippocampus was similarly affected. In contrast, tangential migration was not grossly impaired after Gsk3 deletion in interneuron precursors. Gsk3-deleted neurons extended axons and developed dendritic arbors. However, the apical dendrite was frequently branched while basal dendrites exhibited abnormal orientation. GSK-3 regulation of migration in neurons was independent of Wnt/β-catenin signaling. Importantly, phosphorylation of the migration mediator, DCX, at ser327, and phosphorylation of the semaphorin signaling mediator, CRMP-2, at Thr514 were markedly decreased. Our data demonstrate that GSK-3 signaling is essential for radial migration and dendritic orientation and suggest that GSK-3 mediates these effects by phosphorylating key microtubule regulatory proteins.

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  • Neurons fail to migrate to the cortical plate and accumulate within the intermediate zone when WNT and β-catenin signaling is upregulated.

    “Thus, neurons fail to migrate to the cortical plate and accumulate within the intermediate zone [88, 104].”

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Authors
Morgan-Smith, M., Wu, Y., Zhu, X., Pringle, J., & Snider, W. D.
Affiliations
University of North Carolina at Chapel Hill (US)
Corresponding author
  • Morgan-Smith, Meghan
  • Snider, William D
Venue
eLife
Published
2014-07-29
Volume
3
Pages
e02663-e02663
ISSN
2050-084X (ISSN-L)
OpenAlex
W1984598826
Cited by
76
References
78
Citations by year
2026: 1 · 2025: 1 · 2024: 7 · 2023: 11 · 2022: 7 · 2021: 6 · 2020: 12 · 2019: 4 · 2018: 5 · 2017: 7 · 2016: 5 · 2015: 7 · 2014: 2
FWCI
2.43
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • UNC Libraries
Funders
National Institutes of Health (NS050968, 5F31NS067838, NS045892)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
glycogen synthase kinase-3, GSK3α, GSK3β, radial migration, dendrite orientation, cortical development, excitatory neurons, microtubule regulation, Wnt/β-catenin signaling, hippocampus, conditional knockout mice
MeSH terms
Glycogen Synthase Kinase 3 beta, Doublecortin Domain Proteins, Doublecortin Protein, Animals, Cell Movement, Cerebral Cortex, Dendrites, Hippocampus, Mice, Inbred C57BL, Microtubule-Associated Proteins, Mutation, Neuropeptides, Phosphorylation, Substrate Specificity, Signal Transduction, Gene Deletion, cdc42 GTP-Binding Protein, Glycogen Synthase Kinase 3, PTEN Phosphohydrolase, beta Catenin, Wnt Signaling Pathway

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