Cited by 408Neurogenesis and neuroplasticity mechanismsDevelopmental Biology and Gene RegulationGenetics and Neurodevelopmental Disorders

Development and arealization of the cerebral cortex

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Cadwell, Cathryn R., Bhaduri, Aparna, Mostajo-Radji, Mohammed A., Keefe, Matthew G., Nowakowski, Tomasz J.·2019·Neuron

Abstract

Adult cortical areas consist of specialized cell types and circuits that support unique higher-order cognitive functions. How this regional diversity develops from an initially uniform neuroepithelium has been the subject of decades of seminal research, and emerging technologies, including single-cell transcriptomics, provide a new perspective on area-specific molecular diversity. Here, we review the early developmental processes that underlie cortical arealization, including both cortex intrinsic and extrinsic mechanisms as embodied by the protomap and protocortex hypotheses, respectively. We propose an integrated model of serial homology whereby intrinsic genetic programs and local factors establish early transcriptomic differences between excitatory neurons destined to give rise to broad "proto-regions," and activity-dependent mechanisms lead to progressive refinement and formation of sharp boundaries between functional areas. Finally, we explore the potential of these basic developmental processes to inform our understanding of the emergence of functional neural networks and circuit abnormalities in neurodevelopmental disorders.

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Crossref · 10.1016/j.neuron.2019.07.009

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  • The set of cell type-defining transcription factors in a progenitor or daughter cell can change with time, so different neuronal types emanate from the same progenitor in a precisely timed birth order.

    “The set of cell type-defining transcription factors in a progenitor or a daughter cell can change with time, such that different neuronal types emanate from the same progenitor in a precisely timed “birth order”.”

    From What is a cell type and how to define it? (2022) · cites this paper as Cadwell et al., 2019

  • Opposing morphogen gradients establish the basic plan for cortex (anterior-posterior) or spinal cord (dorsal-ventral) patterning and provide instructive signals for expression of complementary transcription factor activators and repressors, which define distinct neural progenitor domains.

    “First, opposing morphogen gradients establish the basic plan for cortex (anterior-posterior) or spinal cord (dorsal-ventral) patterning and provide instructive signals for the expression of complementary sets of transcription factor activators and repressors, which in turn define distinct neural progenitor domains within cortex or spinal cord.”

    From What is a cell type and how to define it? (2022) · cites this paper as Cadwell et al., 2019

  • Later in development, the same neural progenitors also generate non-neuronal cell types such as astrocytes and oligodendrocytes.

    “Later in development, the same neural progenitors also generate non-neuronal cell types such as astrocytes and oligodendrocytes.”

    From What is a cell type and how to define it? (2022) · cites this paper as Cadwell et al., 2019

  • Extensive historical studies of mouse cortex and spinal cord cell types have uncovered several common principles.

    “The generation and patterning of mouse cortex and spinal cord cell types are two example systems where extensive historical studies have uncovered several common principles (Cadwell et al., 2019; Catela et al., 2015; Jessell, 2000; O’Leary et al., 2007; Osseward and Pfaff, 2019; Sagner and Briscoe, 2019).”

    From What is a cell type and how to define it? (2022) · cites this paper as Cadwell et al., 2019

  • Specific sets of cell adhesion molecules provide guidance cues for axon path finding and synapse formation, leading to assembly of region- and cell type-specific local and global circuit networks.

    “Third, specific sets of cell adhesion molecules provide guidance cues for axon path finding and synapse formation, leading to the assembly of region- and cell type-specific local and global circuit networks.”

    From What is a cell type and how to define it? (2022) · cites this paper as Cadwell et al., 2019

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Research works printed but not linked: 2

  1. Hinton GE, Sabour S, and Frosst N (2018). Matrix capsules with EM routing. In International Conference on Learning Representations, p.
  2. Molnár Z (2013). Cortical Columns. In Comprehensive Developmental Neuroscience: Neural Circuit Development and Function in the Healthy and Diseased Brain, Rubenstein JLR, and Rakic P, eds. (London: Academic Press), pp. 109– 129.

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Authors
Cadwell, C. R., Bhaduri, A., Mostajo-Radji, M. A., Keefe, M. G., & Nowakowski, T. J.
Affiliations
University of California, San Francisco (US)
Corresponding author
Nowakowski, Tomasz J.
Venue
Neuron
Publisher
Elsevier BV
Published
2019-09
Volume
103
Issue
6
Pages
980-1004
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2976579916
Cited by
408
References
370
Citations by year
2026: 53 · 2025: 76 · 2024: 68 · 2023: 68 · 2022: 63 · 2021: 45 · 2020: 32 · 2019: 2
FWCI
4.47
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
William K. Bowes, Jr. Foundation
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
cortical development, serial homology, excitatory neurons, single-cell transcriptomics, neurodevelopmental disorders
MeSH terms
Deep Learning, Animals, Cerebral Cortex, Humans, Interneurons, Neural Inhibition, Neurons, Thalamus, Gene Expression Regulation, Developmental, Neurogenesis, Single-Cell Analysis

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