Cited by 322Neurogenesis and neuroplasticity mechanismsDevelopmental Biology and Gene RegulationGenetics and Neurodevelopmental Disorders

Tbr1 regulates regional and laminar identity of postmitotic neurons in developing neocortex

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Bedogni, Francesco, Hodge, Rebecca D., Elsen, Gina E., Nelson, Branden R., Daza, Ray A. M., Beyer, Richard P., Bammler, Theo K., Rubenstein, John L. R. +1 more·2010·Proceedings of the National Academy of Sciences

Abstract

Areas and layers of the cerebral cortex are specified by genetic programs that are initiated in progenitor cells and then, implemented in postmitotic neurons. Here, we report that Tbr1, a transcription factor expressed in postmitotic projection neurons, exerts positive and negative control over both regional (areal) and laminar identity. Tbr1 null mice exhibited profound defects of frontal cortex and layer 6 differentiation, as indicated by down-regulation of gene-expression markers such as Bcl6 and Cdh9 . Conversely, genes that implement caudal cortex and layer 5 identity, such as Bhlhb5 and Fezf2 , were up-regulated in Tbr1 mutants. Tbr1 implements frontal identity in part by direct promoter binding and activation of Auts2 , a frontal cortex gene implicated in autism. Tbr1 regulates laminar identity in part by downstream activation or maintenance of Sox5 , an important transcription factor controlling neuronal migration and corticofugal axon projections. Similar to Sox5 mutants, Tbr1 mutants exhibit ectopic axon projections to the hypothalamus and cerebral peduncle. Together, our findings show that Tbr1 coordinately regulates regional and laminar identity of postmitotic cortical neurons.

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  • TBR1 encodes a transcription factor that binds DNA and regulates gene expression in the developing brain.

    “For example, TBR1 encodes a transcription factor that binds DNA and regulates gene expression in the developing brain (Bedogni et al., 2010; Hevner et al., 2001).”

    From Getting to the cores of autism (2019) · cites this paper as Bedogni et al., 2010

  • Tbr1 regulates expression of rostrocaudal and layer-specific markers in the cerebral cortex, with the rostrocaudal effect partly through activation of AUTS2.

    “Tbr1 in turn regulates the expression of rostrocaudal and layer-specific markers in the cerebral cortex, the former being partly through activation of the autism gene AUTS2 [28].”

    From Autism spectrum disorder: neuropathology and animal models (2017) · cites this paper as [28]

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  1. [6]Polleux F, Dehay C, Kennedy H. The timetable of laminar neurogenesis contributes to the specification of cortical areas in mouse isocortex. J Comp Neurol. 1997a;385:95–116. [PubMed] [Google Scholar]

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Authors
Bedogni, F., Hodge, R. D., Elsen, G. E., Nelson, B. R., Daza, R. A. M., Beyer, R. P., Bammler, T. K., Rubenstein, J. L. R., & Hevner, R. F.
Affiliations
  • University of Washington (US)
  • Seattle Children's Research Institute (US)
  • University of California, San Francisco (US)
Venue
Proceedings of the National Academy of Sciences
Published
2010-07-06
Volume
107
Issue
29
Pages
13129-13134
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2089397711
Cited by
322
References
50
Citations by year
2026: 12 · 2025: 15 · 2024: 12 · 2023: 19 · 2022: 21 · 2021: 26 · 2020: 14 · 2019: 22 · 2018: 16 · 2017: 21 · 2016: 22 · 2015: 29 · 2014: 18 · 2013: 33 · 2012: 27
FWCI
7.60
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • ORCA Online Research @Cardiff (Cardiff University) (submittedVersion)
Funders
  • National Institute of Neurological Disorders and Stroke (R01NS050248, R01NS034661, R01NS099099)
  • National Institute of Environmental Health Sciences (P30 ES-07033, P30ES007033)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (P30HD02274, P30HD002274)
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 › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
Tbr1, neocortex development, frontal cortex, layer 6, layer 5, AUTS2, SOX5, neuronal migration, Fezf2, BCL6, transcriptional regulation, autism spectrum disorder
MeSH terms
Animals, Cytoskeletal Proteins, DNA-Binding Proteins, Mitosis, Mutation, Neurons, Nuclear Proteins, Organ Specificity, Protein Binding, Transcription Factors, Biomarkers, Transcriptional Activation, Down-Regulation, Up-Regulation, Gene Expression Regulation, Developmental, Neocortex, Oligonucleotide Array Sequence Analysis, T-Box Domain Proteins, Mice

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