Cited by 384Neurogenesis and neuroplasticity mechanismsDevelopmental Biology and Gene RegulationFetal and Pediatric Neurological Disorders

Role of Intermediate Progenitor Cells in Cerebral Cortex Development

Pontious, Adria, Kowalczyk, Tom, Englund, Chris, Hevner, Robert F.·2008·Developmental Neuroscience

Abstract

Intermediate progenitor cells (IPCs) are a type of neurogenic transient amplifying cells in the developing cerebral cortex. IPCs divide symmetrically at basal (abventricular) positions in the neuroepithelium to produce pairs of new neurons or, in amplifying divisions, pairs of new IPCs. In contrast, radial unit progenitors (neuroepithelial cells and radial glia) divide at the apical (ventricular) surface and produce only single neurons or single IPCs by asymmetric division, or self-amplify by symmetric division. Histologically, IPCs are most prominent during the middle and late stages of neurogenesis, when they accumulate in the subventricular zone, a progenitor compartment linked to the genesis of upper neocortical layers (II–IV). Nevertheless, IPCs are present throughout cortical neurogenesis and produce neurons for all layers. In mice, changes in the abundance of IPCs caused by mutations of Pax6, Ngn2, Id4 and other genes are associated with parallel changes in cortical thickness but not surface area. In gyrencephalic brains, IPCs may play broader roles in determining not only laminar thickness, but also cortical surface area and gyral patterns. We propose that regulation of IPC genesis and amplification across developmental stages and regional subdivisions modulates laminar neurogenesis and contributes to the cytoarchitectonic differentiation of cortical areas.

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Crossref · 10.1159/000109848

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  • Cortical surface area and thickness are controlled by mechanisms involved in RGC and IPC proliferation and differentiation decisions.

    “Cortical surface area and thickness are controlled by the mechanisms involved in RGC and IPC proliferation and differentiation decisions [99, 100].”

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Authors
Pontious, A., Kowalczyk, T., Englund, C., & Hevner, R. F.
Affiliations
University of Washington (US)
Venue
Developmental Neuroscience
Publisher
S. Karger AG
Published
2007-12-13
Volume
30
Issue
1-3
Pages
24-32
ISSN
  • 0378-5866 (ISSN-L)
  • 1421-9859
OpenAlex
W2012470399
Cited by
378
References
73
Citations by year
2026: 3 · 2025: 5 · 2024: 18 · 2023: 13 · 2022: 15 · 2021: 18 · 2020: 22 · 2019: 22 · 2018: 18 · 2017: 19 · 2016: 20 · 2015: 22 · 2014: 30 · 2013: 31 · 2012: 28
FWCI
2.07
Type
journal article
Language
en
Open access
closed
Locations
  • Developmental Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
Keywords
intermediate progenitor cells, cortical development, cortical neurogenesis, subventricular zone, radial glia, neuroepithelial cells, cortical lamination, cortical thickness, cortical surface area, Pax6, Ngn2, Id4, cytoarchitecture, gyrencephaly
MeSH terms
Animals, Cell Differentiation, Cerebral Cortex, Humans, Nerve Growth Factors, Nervous System Malformations, Neural Pathways, Neurons, Stem Cells, Signal Transduction, Gene Expression Regulation, Developmental, Mice

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