Cited by 107Neurogenesis and neuroplasticity mechanismsWnt/β-catenin signaling in development and cancerDevelopmental Biology and Gene Regulation

AKT activation by N-cadherin regulates beta-catenin signaling and neuronal differentiation during cortical development

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Zhang, Jianing, Shemezis, Julie R, McQuinn, Erin R, Wang, Jing, Sverdlov, Maria, Chenn, Anjen·2013·Neural Development

Abstract

Background: During cerebral cortical development, neural precursor-precursor interactions in the ventricular zone neurogenic niche coordinate signaling pathways that regulate proliferation and differentiation. Previous studies with shRNA knockdown approaches indicated that N-cadherin adhesion between cortical precursors regulates β-catenin signaling, but the underlying mechanisms remained poorly understood. Results: Here, with conditional knockout approaches, we find further supporting evidence that N-cadherin maintains β-catenin signaling during cortical development. Using shRNA to N-cadherin and dominant negative N-cadherin overexpression in cell culture, we find that N-cadherin regulates Wnt-stimulated β-catenin signaling in a cell-autonomous fashion. Knockdown or inhibition of N-cadherin with function-blocking antibodies leads to reduced activation of the Wnt co-receptor LRP6. We also find that N-cadherin regulates β-catenin via AKT, as reduction of N-cadherin causes decreased AKT activation and reduced phosphorylation of AKT targets GSK3β and β-catenin. Inhibition of AKT signaling in neural precursors in vivo leads to reduced β-catenin-dependent transcriptional activation, increased migration from the ventricular zone, premature neuronal differentiation, and increased apoptotic cell death. Conclusions: These results show that N-cadherin regulates β-catenin signaling through both Wnt and AKT, and suggest a previously unrecognized role for AKT in neuronal differentiation and cell survival during cortical development.

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  • In precursor and radial glial cells (RGCs), upregulation of PI3K/AKT, WNT and β-catenin or downregulation of RAS/ERK leads to elevated proliferation.

    “In precursor and radial glial cells (RGCs), upregulation of PI3K/AKT, WNT and β-catenin or downregulation of RAS/ERK leads to elevated proliferation [86, 88, 89].”

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Authors
Zhang, J., Shemezis, J. R., McQuinn, E. R., Wang, J., Sverdlov, M., & Chenn, A.
Affiliations
  • Northwestern University (US)
  • University of Illinois Chicago (US)
Corresponding author
Chenn, Anjen
Venue
Neural Development
Published
2013-04-25
Volume
8
Issue
1
Pages
7-7
ISSN
1749-8104 (ISSN-L)
OpenAlex
W2165383481
Cited by
107
References
55
Citations by year
2025: 4 · 2024: 10 · 2023: 4 · 2022: 12 · 2021: 9 · 2020: 7 · 2019: 6 · 2018: 14 · 2017: 8 · 2016: 17 · 2015: 9 · 2014: 7
FWCI
4.08
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Neural Development (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Coleman Foundation
  • March of Dimes Foundation
  • Aflac
  • Emory University
  • Northwestern University
  • Children's Healthcare of Atlanta
  • National Institutes of Health
  • University of Illinois at Urbana-Champaign
  • Feinberg School of Medicine
  • National Cancer Institute (R21CA149388)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
N-cadherin, Akt signaling, β-catenin signaling, Wnt signaling, GSK3β phosphorylation, neuronal differentiation, cortical development, neuronal precursors, ventricular zone, cell adhesion, apoptosis, conditional knockout
MeSH terms
Glycogen Synthase Kinase 3 beta, Animals, Brain, Cell Differentiation, Cells, Cultured, Enzyme Activation, Mice, Inbred C57BL, Neurons, Signal Transduction, Cadherins, Glycogen Synthase Kinase 3, Proto-Oncogene Proteins c-akt, Wnt Proteins, beta Catenin, Mice, Gene Knockdown Techniques

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