Cited by 206Axon Guidance and Neuronal SignalingNeurogenesis and neuroplasticity mechanismsDevelopmental Biology and Gene Regulation

TBR1 directly represses Fezf2 to control the laminar origin and development of the corticospinal tract

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Han, Wenqi, Kwan, Kenneth Y., Shim, Sungbo, Lam, Mandy M. S., Shin, Yurae, Xu, Xuming, Zhu, Ying, Li, Mingfeng +1 more·2011·Proceedings of the National Academy of Sciences

Abstract

The corticospinal (CS) tract is involved in controlling discrete voluntary skilled movements in mammals. The CS tract arises exclusively from layer (L) 5 projection neurons of the cerebral cortex, and its formation requires L5 activity of Fezf2 ( Fezl , Zfp312 ). How this L5-specific pattern of Fezf2 expression and CS axonal connectivity is established with such remarkable fidelity had remained elusive. Here we show that the transcription factor TBR1 directly binds the Fezf2 locus and represses its activity in L6 corticothalamic projection neurons to restrict the origin of the CS tract to L5. In Tbr1 null mutants, CS axons ectopically originate from L6 neurons in a Fezf2 -dependent manner. Consistently, misexpression of Tbr1 in L5 CS neurons suppresses Fezf2 expression and effectively abolishes the CS tract. Taken together, our findings show that TBR1 is a direct transcriptional repressor of Fezf2 and a negative regulator of CS tract formation that restricts the laminar origin of CS axons specifically to L5.

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Crossref · 10.1073/pnas.1016723108

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  • PAX5 and FEZF2 are involved in transcription regulation during central nervous system development.

    “PAX5 and FEZF2 are involved in transcription regulation during central nervous system development.4,24,37”
  • Interactions of several genes with Tbr1 determine corticothalamic projection of layer VI neurons, callosal projection of superficial cortical layer neurons, and subcortical projection of layer V neurons.

    “Complex interactions of several genes with Tbr1 determine the corticothalamic projection of layer VI neurons, callosal projection of neurons in the cortical superficial layers [335] and subcortical projection of layer V neurons [50, 142, 232].”

    From Autism spectrum disorder: neuropathology and animal models (2017) · cites this paper as [142]

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Authors
Han, W., Kwan, K. Y., Shim, S., Lam, M. M. S., Shin, Y., Xu, X., Zhu, Y., Li, M., & Šestan, N.
Affiliations
Yale University (US)
Venue
Proceedings of the National Academy of Sciences
Published
2011-02
Volume
108
Issue
7
Pages
3041-3046
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2109726419
Cited by
206
References
35
Citations by year
2026: 5 · 2025: 6 · 2024: 17 · 2023: 16 · 2022: 13 · 2021: 12 · 2020: 9 · 2019: 13 · 2018: 14 · 2017: 15 · 2016: 13 · 2015: 18 · 2014: 16 · 2013: 24 · 2012: 12
FWCI
7.28
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • China Scholarship Council
  • National Institutes of Health
  • Samsung
  • National Institute of Neurological Disorders and Stroke (R01NS054273, NS 054273)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
Tbr1, Fezf2, corticospinal tract, transcriptional repression, transcription factor binding, axonal connectivity
MeSH terms
Animals, Axons, Base Sequence, DNA-Binding Proteins, Luciferases, Molecular Sequence Data, Nerve Tissue Proteins, Plasmids, Pyramidal Tracts, Sequence Analysis, DNA, Sequence Analysis, RNA, Mice, Knockout, Gene Expression Regulation, Developmental, Reverse Transcriptase Polymerase Chain Reaction, T-Box Domain Proteins, Chromatin Immunoprecipitation, Mice

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