Cited by 1,261Neurogenesis and neuroplasticity mechanismsDevelopmental Biology and Gene RegulationCongenital heart defects research

Pax6, Tbr2, and Tbr1 Are Expressed Sequentially by Radial Glia, Intermediate Progenitor Cells, and Postmitotic Neurons in Developing Neocortex

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Englund, Chris, Fink, Andy, Lau, Charmaine, Pham, Diane, Daza, Ray A. M., Bulfone, Alessandro, Kowalczyk, Tom, Hevner, Robert F.·2005·The Journal of Neuroscience

Abstract

The developing neocortex contains two types of progenitor cells for glutamatergic, pyramidal-projection neurons. The first type, radial glia, produce neurons and glia, divide at the ventricular surface, and express Pax6, a homeodomain transcription factor. The second type, intermediate progenitor cells, are derived from radial glia, produce only neurons, and divide away from the ventricular surface. Here we show that the transition from radial glia to intermediate progenitor cell is associated with upregulation of Tbr2, a T-domain transcription factor, and downregulation of Pax6. Accordingly, Tbr2 expression in progenitor compartments (the subventricular zone and ventricular zone) rises and falls with cortical plate neurogenesis. The subsequent transition from intermediate progenitor cell to postmitotic neuron is marked by downregulation of Tbr2 and upregulation of Tbr1, another T-domain transcription factor. These findings delineate the transcription factor sequence Pax6 → Tbr2 → Tbr1 in the differentiation of radial glia → intermediate progenitor cell → postmitotic projection neuron. This transcription factor sequence is modified in preplate neurons, in which Tbr2 is transiently coexpressed with Tbr1, and in the direct differentiation pathway from radial glia → postmitotic projection neuron, in which Tbr2 is expressed briefly or not at all.

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Crossref · 10.1523/jneurosci.2899-04.2005

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  • TBR2 and PAX6 are enriched in germinal layers as in mouse, but PAX6 is also highly expressed in human SZ whereas in mouse it is restricted to VZ.

    “The cortical progenitor markers TBR2 and PAX6 are enriched in germinal layers as in mouse, although PAX6 in mouse is restricted to VZ whereas it is also highly expressed in human SZ31.”

    From Transcriptional landscape of the prenatal human brain (2014) · cites this paper as [31]

  • IPs specifically express Tbr2 during indirect neurogenesis.

    “The LIM-homeodomain protein LHX2 and zinc-finger transcription factor FEZF2 act at multiple stages of neurogenesis55,57, and IPs specifically express the T-box transcription factor Tbr2 during indirect neurogenesis58.”

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Authors
Englund, C., Fink, A., Lau, C., Pham, D., Daza, R. A. M., Bulfone, A., Kowalczyk, T., & Hevner, R. F.
Affiliations
  • University of Washington (US)
  • Vita-Salute San Raffaele University (IT)
Venue
The Journal of Neuroscience
Published
2005-01-05
Volume
25
Issue
1
Pages
247-251
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1990935914
Cited by
1,261
References
23
Citations by year
2026: 23 · 2025: 40 · 2024: 45 · 2023: 46 · 2022: 52 · 2021: 66 · 2020: 85 · 2019: 59 · 2018: 78 · 2017: 71 · 2016: 73 · 2015: 70 · 2014: 72 · 2013: 84 · 2012: 71
FWCI
11.54
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Edward Mallinckrodt, Jr. Foundation
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (K02NS045018)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Congenital heart defects research
Keywords
Pax6, Tbr2, Tbr1, radial glia, intermediate progenitor cells, postmitotic neurons, neocortex development, transcription factor expression, glutamatergic projection neurons, subventricular zone, ventricular zone
MeSH terms
PAX6 Transcription Factor, Animals, Cells, Cultured, DNA-Binding Proteins, Eye Proteins, Mitosis, Nerve Tissue Proteins, Neurons, Repressor Proteins, Stem Cells, Time Factors, Transcription Factors, Homeodomain Proteins, Gene Expression Regulation, Developmental, Neocortex, T-Box Domain Proteins, Mice, Paired Box Transcription Factors

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