Cited by 86Schizophrenia research and treatmentRNA Research and SplicingNeuroscience and Neuropharmacology Research

Dysregulated ErbB4 Splicing in Schizophrenia: Selective Effects on Parvalbumin Expression

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Chung, Daniel W., Volk, David W., Arion, Dominique, Zhang, Yun, Sampson, Allan R., Lewis, David A.·2016·American Journal of Psychiatry

Abstract

OBJECTIVE: Alternative splicing of ErbB4 transcripts is dysregulated in the dorsolateral prefrontal cortex in schizophrenia. ErbB4 regulates the activity of parvalbumin interneurons, and therefore dysregulated ErbB4 splicing could contribute to lower parvalbumin interneuron activity and consequently lower parvalbumin levels in schizophrenia. However, ErbB4 is also present in calretinin interneurons, which are not affected in schizophrenia. Therefore, the authors hypothesized that dysregulated ErbB4 splicing occurs selectively in parvalbumin interneurons and is associated with lower parvalbumin levels in schizophrenia. METHOD: Tissue samples enriched in calretinin and parvalbumin interneurons were laser microdissected from dorsolateral prefrontal cortex layers 2 and 4, respectively, from matched pairs of schizophrenia and comparison subjects. Transcript levels for pan-ErbB4, four ErbB4 splicing variants (JM-a, JM-b, CYT-1, CYT-2), parvalbumin, and calretinin were quantified by quantitative polymerase chain reaction (qPCR) in each layer. Transcript levels for myocardial infarction associated transcript (MIAT), which regulates ErbB4 splicing, were quantified in gray matter by qPCR and in parvalbumin interneurons by microarray. RESULTS: Calretinin and parvalbumin mRNAs were preferentially expressed in layers 2 and 4, respectively. In schizophrenia subjects, lower parvalbumin levels, higher CYT-1 and JM-a levels, and lower CYT-2 and JM-b levels were detected selectively in layer 4. In layer 4, the JM-a/JM-b ratio was inversely correlated with parvalbumin levels in schizophrenia subjects. MIAT levels were preferentially higher in parvalbumin interneurons in schizophrenia subjects. CONCLUSIONS: These findings suggest that elevated MIAT expression alters ErbB4 splicing selectively in parvalbumin interneurons in schizophrenia. Dysregulated ErbB4 splicing in schizophrenia may contribute to lower activity of parvalbumin interneurons and an activity-dependent down-regulation of parvalbumin expression.

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  • Reduced numbers of PV-INs have been reported in the hippocampus, entorhinal cortex, and subicular areas in schizophrenia.

    “Reductions in the number of PV-INs were reported in the hippocampus, entorhinal cortex, and subicular areas [1,[9][10][11].”

    From Parvalbumin interneuron vulnerability and brain disorders (2021) · cites this paper as [10]

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Authors
Chung, D. W., Volk, D. W., Arion, D., Zhang, Y., Sampson, A. R., & Lewis, D. A.
Affiliations
University of Pittsburgh (US)
Venue
American Journal of Psychiatry
Published
2016-01-01
Volume
173
Issue
1
Pages
60-68
ISSN
  • 0002-953X (ISSN-L)
  • 1535-7228
OpenAlex
W2102125031
Cited by
86
References
40
Citations by year
2026: 5 · 2025: 4 · 2024: 11 · 2023: 7 · 2022: 8 · 2021: 11 · 2020: 7 · 2019: 6 · 2018: 8 · 2017: 11 · 2016: 8
FWCI
7.30
Type
journal article
Language
en
Open access
Locations
  • American Journal of Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (R01MH043784, P50MH103204, MH-103204, R37MH043784, MH043784, R01MH100066)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
ErbB4, alternative splicing, schizophrenia, parvalbumin interneurons, calretinin interneurons, dorsolateral prefrontal cortex, MIAT, layer 4
MeSH terms
Adult, Female, Humans, Interneurons, Male, Parvalbumins, Schizophrenia, Down-Regulation, Prefrontal Cortex, Alternative Splicing, Receptor, ErbB-4

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