Cited by 49Schizophrenia research and treatmentNeurogenesis and neuroplasticity mechanismsGenetics and Neurodevelopmental Disorders

Abnormal interneuron development in disrupted-in-schizophrenia-1 L100P mutant mice

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Lee, Frankie HF, Zai, Clement C, Cordes, Sabine P, Roder, John C, Wong, Albert HC·2013·Molecular Brain

Abstract

Background: Interneuron deficits are one of the most consistent findings in post-mortem studies of schizophrenia patients and are likely important in the cognitive deficits associated with schizophrenia. Disrupted-in-Schizophrenia 1 (DISC1), a strong susceptibility gene for schizophrenia and other mental illnesses, is involved in neurodevelopment, including that of interneurons. However, the mechanism by which DISC1 regulates interneuron development remains unknown. In this study, we analyzed interneuron histology in the Disc1-L100P single point mutation mouse, that was previously shown to have behavioral abnormalities and cortical developmental defects related to schizophrenia. Results: We sought to determine whether a Disc1-L100P point mutation in the mouse would alter interneuron density and location. First, we examined interneuron position in the developing mouse cortex during embryonic days 14–16 as an indicator of interneuron tangential migration, and found striking migration deficits in Disc1-L100P mutants. Further analysis of adult brains revealed that the Disc1-L100P mutants have selective alterations of calbindin- and parvalbumin-expressing interneurons in the cortex and hippocampus, decreased GAD67/PV co-localization and mis-positioned interneurons across the neocortex when compared to wild-type littermates. Conclusion: Our results are consistent with the anomalies seen in post-mortem schizophrenia studies and other Disc1 mutant mouse models. Future research is required to determine the specific mechanisms underlying these cellular deficits. Overall, these findings provide further evidence that DISC1 participates in interneuron development and add to our understanding of how DISC1 variants can affect susceptibility to psychiatric illness.

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  • Mouse models relevant to both schizophrenia and bipolar disorder, including Disc1 and Bdnf models, show abnormal PV-IN function ranging from migration deficits to reduced interneuron number.

    “Mouse models relevant for both disorders, including the disrupted in schizophrenia 1 gene (Disc1) [57][58][59][60][61], or brain derived neurotrophic factor (Bdnf) [62], show abnormal PV-IN function ranging from migration deficits to reduction in IN number.”

    From Parvalbumin interneuron vulnerability and brain disorders (2021) · cites this paper as [57]

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Authors
Lee, F. H., Zai, C. C., Cordes, S. P., Roder, J. C., & Wong, A. H.
Affiliations
  • Centre for Addiction and Mental Health (CA)
  • Mount Sinai Hospital (CA)
Corresponding author
Wong, Albert HC
Venue
Molecular Brain
Published
2013-04-30
Volume
6
Issue
1
Pages
20-20
ISSN
1756-6606 (ISSN-L)
OpenAlex
W2121476953
Cited by
49
References
57
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 1 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 3 · 2018: 2 · 2017: 3 · 2016: 10 · 2015: 8 · 2014: 7 · 2013: 1
FWCI
6.13
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Molecular Brain (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • TSpace (University of Toronto) (submittedVersion)
Funders
  • American Foundation for Suicide Prevention
  • Eli Lilly and Company
  • National Alliance for Research on Schizophrenia and Depression
  • Centre for Addiction and Mental Health Foundation
  • Canadian Institutes of Health Research
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
DISC1, schizophrenia, interneuron development, tangential migration, parvalbumin interneurons, GAD67, hippocampus, neocortex, cortical development, brain development
MeSH terms
Animals, Cell Count, Cell Movement, Embryo, Mammalian, Glutamate Decarboxylase, Hippocampus, Interneurons, Mice, Inbred C57BL, Mice, Neurologic Mutants, Nerve Tissue Proteins, Parvalbumins, Schizophrenia, Point Mutation, Prefrontal Cortex, Neocortex, Mice, Calbindins

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