Cited by 22Schizophrenia research and treatmentNeurotransmitter Receptor Influence on BehaviorGenetics and Neurodevelopmental Disorders

Epistatic and independent effects on schizophrenia-related phenotypes following co-disruption of the risk factors neuregulin-1 × DISC1

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O’Tuathaigh, Colm M. P., Fumagalli, Fabio, Desbonnet, Lieve, Perez-Branguli, Francesc, Moloney, Gerard, Loftus, Samim, O’Leary, Claire, Petit, Emilie +10 more·2017·Schizophrenia Bulletin

Abstract

Few studies have addressed likely gene × gene (ie, epistatic) interactions in mediating risk for schizophrenia. Using a preclinical genetic approach, we investigated whether simultaneous disruption of the risk factors Neuregulin-1 (NRG1) and Disrupted-in-schizophrenia 1 (DISC1) would produce a disease-relevant phenotypic profile different from that observed following disruption to either gene alone. NRG1 heterozygotes exhibited hyperactivity and disruption to prepulse inhibition, both reversed by antipsychotic treatment, and accompanied by reduced striatal dopamine D2 receptor protein expression, impaired social cognition, and altered glutamatergic synaptic protein expression in selected brain areas. Single gene DISC1 mutants demonstrated a disruption in social cognition and nest-building, altered brain 5-hydroxytryptamine levels and hippocampal ErbB4 expression, and decreased cortical expression of the schizophrenia-associated microRNA miR-29b. Co-disruption of DISC1 and NRG1, indicative of epistasis, evoked an impairment in sociability and enhanced self-grooming, accompanied by changes in hypothalamic oxytocin/vasopressin gene expression. The findings indicate specific behavioral correlates and underlying cellular pathways downstream of main effects of DNA variation in the schizophrenia-associated genes NRG1 and DISC1.

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Authors
O’Tuathaigh, C. M. P., Fumagalli, F., Desbonnet, L., Perez-Branguli, F., Moloney, G., Loftus, S., O’Leary, C., Petit, E., Cox, R., Tighe, O., Clarke, G., Lai, D., Harvey, R. P., Cryan, J. F., Mitchell, K. J., Dinan, T. G., Riva, M. A., & Waddington, J. L.
Affiliations
  • Royal College of Surgeons in Ireland (IE)
  • University of Milan (IT)
  • University College Cork (IE)
  • Smurfit Institute of Genetics, Trinity College Dublin 5   , Dublin 2 , Ireland ;
  • Victor Chang Cardiac Research Institute (AU)
  • Trinity College Dublin (IE)
Venue
Schizophrenia Bulletin
Published
2016-09-09
Volume
43
Issue
1
Pages
214-225
ISSN
  • 0586-7614 (ISSN-L)
  • 1745-1701
OpenAlex
W2513513402
Cited by
22
References
40
Citations by year
2026: 1 · 2025: 2 · 2024: 3 · 2023: 1 · 2022: 4 · 2020: 2 · 2019: 2 · 2018: 1 · 2017: 4 · 2016: 2
FWCI
2.67
Type
journal article
Language
en
Open access
Locations
  • Schizophrenia Bulletin (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano) (submittedVersion, other-oa)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
  • HighWire Press Open Archive (submittedVersion)
  • Trinity's Access to Research Output (TARA) (Trinity College Dublin) (submittedVersion, cc-by-nc-sa)
Funders
  • Science Foundation Ireland (07/IN.1/B960, SFI/12/RC/2273, 02/CE/B124, 07/CE/B1368)
  • Health Research Board of Ireland Postdoctoral Fellowship (PD/2007/20)
  • The Alimentary Pharmabiotic Centre is a research centre
  • Health Research Board (HRA_POR/2011/23, HRA_POR/2012/32, HRA-POR-2014–647)
  • European Community’s Seventh Framework Programme (FP7/2007–2013, 201 714, KBBE.2013.2.2-02)
  • Brain and Behavior Research Foundation (20771)
  • University College Cork Translational Research Access Programme
  • RIKEN BRC
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
schizophrenia, epistasis
MeSH terms
Amphetamines, Animals, Behavior, Animal, Brain, Disease Models, Animal, Epistasis, Genetic, Female, Grooming, Male, Mice, Inbred C57BL, Nerve Tissue Proteins, Nesting Behavior, Oxytocin, Psychomotor Agitation, Psychotic Disorders, Schizophrenia, Social Behavior, Vasopressins, Mice, Knockout, Neuregulin-1, Mice, Endophenotypes, Prepulse Inhibition

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