Cited by 643Epilepsy research and treatmentGenetics and Neurodevelopmental DisordersIon channel regulation and function

Autistic-like behaviour in Scn1a+/− mice and rescue by enhanced GABA-mediated neurotransmission

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Han, Sung, Tai, Chao, Westenbroek, Ruth E., Yu, Frank H., Cheah, Christine S., Potter, Gregory B., Rubenstein, John L., Scheuer, Todd +2 more·2012·Nature

Abstract

Haploinsufficiency of the SCN1A gene encoding voltage-gated sodium channel Na(V)1.1 causes Dravet's syndrome, a childhood neuropsychiatric disorder including recurrent intractable seizures, cognitive deficit and autism-spectrum behaviours. The neural mechanisms responsible for cognitive deficit and autism-spectrum behaviours in Dravet's syndrome are poorly understood. Here we report that mice with Scn1a haploinsufficiency exhibit hyperactivity, stereotyped behaviours, social interaction deficits and impaired context-dependent spatial memory. Olfactory sensitivity is retained, but novel food odours and social odours are aversive to Scn1a(+/-) mice. GABAergic neurotransmission is specifically impaired by this mutation, and selective deletion of Na(V)1.1 channels in forebrain interneurons is sufficient to cause these behavioural and cognitive impairments. Remarkably, treatment with low-dose clonazepam, a positive allosteric modulator of GABA(A) receptors, completely rescued the abnormal social behaviours and deficits in fear memory in the mouse model of Dravet's syndrome, demonstrating that they are caused by impaired GABAergic neurotransmission and not by neuronal damage from recurrent seizures. These results demonstrate a critical role for Na(V)1.1 channels in neuropsychiatric functions and provide a potential therapeutic strategy for cognitive deficit and autism-spectrum behaviours in Dravet's syndrome.

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  • Loss-of-function variants of NaV1.1 cause Dravet syndrome and generalized epilepsy with febrile seizures plus, and have also been associated with ASD.

    “Loss of function variants of NaV1.1 cause Dravet syndrome [48], generalized epilepsy with febrile seizures plus [49], and have also been associated with ASD [50,51].”
  • Low doses of clonazepam completely rescued abnormal social behaviors and fear-memory deficits in Scn1a+/- mice.

    “Low doses of clonazepam completely rescued the abnormal social behaviors and deficits in fear memory typically presented by Scn1a+/- mice (Han et al., 2012), demonstrating the impact of restoring the proper coordination of inhibitory transmissions.”
  • Restoring proper coordination of inhibitory transmission can rescue behavioral abnormalities in a Scn1a+/- mouse model.

    “Low doses of clonazepam completely rescued the abnormal social behaviors and deficits in fear memory typically presented by Scn1a+/- mice (Han et al., 2012), demonstrating the impact of restoring the proper coordination of inhibitory transmissions.”
  • In mice haploinsufficient for Scn1a, treatment with low-dose clonazepam completely reversed abnormal social behaviors and deficits in fear memory.

    “In mice haploinsufficient for Scn1a , treatment with low-dose clonazepam, a positive allosteric modulator of GABAA receptors, completely reversed the abnormal social behaviors and deficits in fear memory 77 .”

    From Progress toward treatments for synaptic defects in autism (2013) · cites this paper as [77]

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Authors
Han, S., Tai, C., Westenbroek, R. E., Yu, F. H., Cheah, C. S., Potter, G. B., Rubenstein, J. L., Scheuer, T., de la Iglesia, H. O., & Catterall, W. A.
Affiliations
  • University of Washington (US)
  • University of California, San Francisco (US)
Corresponding author
Catterall, William A.
Venue
Nature
Published
2012-08-22
Volume
489
Issue
7416
Pages
385-390
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2050659319
Cited by
643
References
47
Citations by year
2026: 23 · 2025: 35 · 2024: 43 · 2023: 57 · 2022: 39 · 2021: 62 · 2020: 54 · 2019: 48 · 2018: 37 · 2017: 55 · 2016: 49 · 2015: 47 · 2014: 44 · 2013: 48 · 2012: 2
FWCI
31.70
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institute of Mental Health (R01MH075016, R37MH049428)
  • National Institute of Neurological Disorders and Stroke (R01NS025704)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Epilepsy research and treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
Keywords
SCN1A, haploinsufficiency, GABAergic neurotransmission, GABAA receptor, clonazepam, social interaction deficits, hyperactivity, stereotypy, fear memory, spatial memory, interneurons, epilepsy, cognitive impairment
MeSH terms
Animals, Anxiety, Autistic Disorder, Clonazepam, Epilepsies, Myoclonic, gamma-Aminobutyric Acid, Heterozygote, Hippocampus, Hyperkinesis, Interneurons, Male, Memory, Nerve Tissue Proteins, Synaptic Transmission, Social Behavior, Space Perception, Syndrome, Transcription Factors, Sodium Channels, Homeodomain Proteins, GABA Modulators, Stereotypic Movement Disorder, Mice, Haploinsufficiency, GABAergic Neurons, NAV1.1 Voltage-Gated Sodium Channel

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