Cited by 160Ion channel regulation and functionEpilepsy research and treatmentGenetics and Neurodevelopmental Disorders

Sodium Channel SCN3A (NaV1.3) Regulation of Human Cerebral Cortical Folding and Oral Motor Development

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Smith, Richard S., Kenny, Connor J., Ganesh, Vijay, Jang, Ahram, Borges-Monroy, Rebeca, Partlow, Jennifer N., Hill, R. Sean, Shin, Taehwan +21 more·2018·Neuron

Abstract

Channelopathies are disorders caused by abnormal ion channel function in differentiated excitable tissues. We discovered a unique neurodevelopmental channelopathy resulting from pathogenic variants in SCN3A, a gene encoding the voltage-gated sodium channel Na V 1.3. Pathogenic Na V 1.3 channels showed altered biophysical properties including increased persistent current. Remarkably, affected individuals showed disrupted folding (polymicrogyria) of the perisylvian cortex of the brain but did not typically exhibit epilepsy; they presented with prominent speech and oral motor dysfunction, implicating SCN3A in prenatal development of human cortical language areas. The development of this disorder parallels SCN3A expression, which we observed to be highest early in fetal cortical development in progenitor cells of the outer subventricular zone and cortical plate neurons and decreased postnatally, when SCN1A (Na V 1.1) expression increased. Disrupted cerebral cortical folding and neuronal migration were recapitulated in ferrets expressing the mutant channel, underscoring the unexpected role of SCN3A in progenitor cells and migrating neurons.

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Crossref · 10.1016/j.neuron.2018.07.052

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  • The association of SCN3A pathogenic variants with MCD reflects a key role for sodium conductance in cortical progenitors, which affects cortical gyration during early brain development.

    “The association of SCN3A pathogenic variants with MCD 37 , therefore, reflects a key role for sodium conductance in cortical progenitors, which affects cortical gyration during early brain development 39 .”

    From Developmental and epileptic encephalopathies (2024) · cites this paper as [39]

    The Results and Discussion report that pathogenic SCN3A variants alter sodium-channel currents and that expression of a mutant channel disrupts gyrification in developing ferrets. The Abstract also reports high fetal SCN3A expression in cortical progenitor cells. But the paper says altered sodium conductance *might* underlie polymicrogyria; it does not establish that sodium conductance specifically in progenitors causes the gyration changes. (LLM, conf=0.83)

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  1. Adam MP, Ardinger HH, Pagon RA, Wallace SE, Bean LJ, Mefford HC, Stephens K, Amemiya A, Ledbetter N, Morgan A, Fisher SE, Scheffer I, Hildebrand M, (1993). FOXP2-Related Speech and Language Disorders. 27336128

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Authors
Smith, R. S., Kenny, C. J., Ganesh, V., Jang, A., Borges-Monroy, R., Partlow, J. N., Hill, R. S., Shin, T., Chen, A. Y., Doan, R. N., Anttonen, A.-K., Ignatius, J., Medne, L., Bönnemann, C. G., Hecht, J. L., Salonen, O., Barkovich, A. J., Poduri, A., Wilke, M., de Wit, M. C. Y., Mancini, G. M. S., Sztriha, L., Im, K., Amrom, D., Andermann, E., Paetau, R., Lehesjoki, A.-E., Walsh, C. A., & Lehtinen, M. K.
Affiliations
  • Boston Children's Hospital (US)
  • University of Helsinki (FI)
  • Turku University Hospital (FI)
  • Children's Hospital of Philadelphia (US)
  • Beth Israel Deaconess Medical Center (US)
  • University of California, San Francisco (US)
  • Erasmus MC (NL)
  • Montreal Neurological Institute and Hospital (CA)
Corresponding author
  • Walsh, Christopher A.
  • Lehtinen, Maria K.
Venue
Neuron
Publisher
Elsevier BV
Published
2018-09
Volume
99
Issue
5
Pages
905-913.e7
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2888053187
Cited by
160
References
47
Citations by year
2026: 12 · 2025: 15 · 2024: 23 · 2023: 21 · 2022: 26 · 2021: 24 · 2020: 18 · 2019: 19 · 2018: 2
FWCI
5.60
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • EUR Research Repository (Erasmus University Rotterdam) (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • EUR Research Repository (Erasmus University Rotterdam) (submittedVersion)
  • Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles) (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • Työväentutkimus Vuosikirja (submittedVersion, other-oa)
Funders
  • NIH (1F32NS100033801, R01NS032457, R01NS035129)
  • Erasmus MC Mrace project (#104673)
  • Finnish Medical Society
  • Arvo and Lea Ylppö Foundation
  • Finnish governmental subsidiaries (TLK0278, TRTR019)
  • The Folkhälsan Research Foundation
  • Paul G. Allen Frontiers Program
  • New York Stem Cell Foundation
  • BCH IDDRC (1U54HD090255)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
SCN3A, Nav1.3, voltage-gated sodium channels, channelopathies, neurodevelopmental disorders, polymicrogyria, oral motor dysfunction, speech development, neuronal migration, SCN1A, ferret model, persistent sodium current
MeSH terms
Adolescent, Adult, Animals, Cell Movement, Cells, Cultured, Cerebral Cortex, Child, Child, Preschool, Female, Ferrets, Humans, Infant, Language Development, Male, Middle Aged, Pedigree, Sodium Channels, HEK293 Cells, Megalencephaly, NAV1.3 Voltage-Gated Sodium Channel, Polymicrogyria

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