Cited by 245Genomic variations and chromosomal abnormalitiesGenetics and Neurodevelopmental DisordersAutism Spectrum Disorder Research

Behavioral abnormalities and circuit defects in the basal ganglia of a mouse model of 16p11.2 deletion syndrome

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Portmann, Thomas, Yang, Mu, Mao, Rong, Panagiotakos, Georgia, Ellegood, Jacob, Dolen, Gul, Bader, Patrick L., Grueter, Brad A. +15 more·2014·Cell Reports

Abstract

A deletion on human chromosome 16p11.2 is associated with autism spectrum disorders. We deleted the syntenic region on mouse chromosome 7F3. MRI and high-throughput single-cell transcriptomics revealed anatomical and cellular abnormalities, particularly in cortex and striatum of juvenile mutant mice (16p11(+/-)). We found elevated numbers of striatal medium spiny neurons (MSNs) expressing the dopamine D2 receptor (Drd2(+)) and fewer dopamine-sensitive (Drd1(+)) neurons in deep layers of cortex. Electrophysiological recordings of Drd2(+) MSN revealed synaptic defects, suggesting abnormal basal ganglia circuitry function in 16p11(+/-) mice. This is further supported by behavioral experiments showing hyperactivity, circling, and deficits in movement control. Strikingly, 16p11(+/-) mice showed a complete lack of habituation reminiscent of what is observed in some autistic individuals. Our findings unveil a fundamental role of genes affected by the 16p11.2 deletion in establishing the basal ganglia circuitry and provide insights in the pathophysiology of autism.

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  • The human 16p11.2 locus is a roughly 500-600 kb region containing 27-29 genes on the proximal short arm of chromosome 16.

    “The human 16p11.2 gene locus (chromosome 16, position 11.2) is a ~500–600 kb region containing 27–29 genes [4–7] located on the proximal short arm of chromosome 16 [8].”
  • All three lines of 16p11.2+/− mice display social deficits in various testing paradigms and an array of cognitive deficits.

    “All 3 lines of 16p11.2+/− mice display social deficits in various testing paradigms [59–64], and an array of cognitive deficits [4, 59, 62–68].”
  • Hyperlocomotion is broadly reported in 16p11.2+/− mice, another behavioral feature that does not coincide directly with human symptomology.

    “Hyperlocomotion is also broadly reported in 16p11.2+/− mice [4, 5, 59, 61, 63, 64, 70], another behavioral feature that does not coincide directly with human symptomology.”
  • Mild motor deficits are present in 16p11.2+/− models, consistent with human phenotypes.

    “Mild motor deficits are also present in these models [4, 61, 68], consistent with human phenotypes.”
  • 16p11.2+/− models show reduced body size/weight, in contrast to the human obesity phenotype.

    “However, 16p11.2+/− models show reduced body size/weight [4, 5, 60, 61, 63], in contrast to the human obesity phenotype.”

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Authors
Portmann, T., Yang, M., Mao, R., Panagiotakos, G., Ellegood, J., Dolen, G., Bader, P. L., Grueter, B. A., Goold, C., Fisher, E., Clifford, K., Rengarajan, P., Kalikhman, D., Loureiro, D., Saw, N. L., Zhengqui, Z., Miller, M. A., Lerch, J. P., Henkelman, R. M., Shamloo, M., Malenka, R. C., Crawley, J. N., & Dolmetsch, R. E.
Affiliations
  • Stanford University (US)
  • National Institute of Mental Health (US)
  • Hospital for Sick Children (CA)
  • University of Toronto (CA)
Corresponding author
Dolmetsch, Ricardo E.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2014-05
Volume
7
Issue
4
Pages
1077-1092
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2032319596
Cited by
245
References
62
Citations by year
2026: 14 · 2025: 17 · 2024: 23 · 2023: 29 · 2022: 19 · 2021: 28 · 2020: 13 · 2019: 19 · 2018: 27 · 2017: 18 · 2016: 15 · 2015: 19 · 2014: 4
FWCI
12.23
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • eScholarship (California Digital Library) (submittedVersion, cc-by-nc-nd)
Funders
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (123434)
  • National Institutes of Health
  • National Institute of Mental Health (F31MH090648, MH090648-02, K99MH091160, MH091160, T32MH020016)
  • National Institute of Neurological Disorders and Stroke (NS069375-01A1, P30NS069375)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
Keywords
16p11.2 deletion syndrome, autism spectrum disorder, basal ganglia, striatum, medium spiny neurons, dopamine D2 receptor, dopamine D1 receptor, synaptic defects, basal ganglia circuitry, hyperactivity, circling behavior, habituation deficit, mouse model
MeSH terms
Animals, Autistic Disorder, Basal Ganglia, Mental Disorders, Chromosome Deletion, Chromosomes, Human, Pair 16, Disease Models, Animal, Female, Humans, Male, Intellectual Disability, Mice, Inbred C57BL, Mice, Transgenic, Chromosome Disorders, Mice

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