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Ketharanathan T, Pereira A, Sundram S. Gene expression changes in Brodmann's Area 46 differentiate epidermal growth factor and immune system interactions in schizophrenia and mood disorders. SCHIZOPHRENIA (HEIDELBERG, GERMANY) 2024; 10:76. [PMID: 39242583 PMCID: PMC11379811 DOI: 10.1038/s41537-024-00488-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 07/16/2024] [Indexed: 09/09/2024]
Abstract
How early in life stress-immune related environmental factors increase risk predisposition to schizophrenia remains unknown. We examined if pro-inflammatory changes perturb the brain epidermal growth factor (EGF) system, a system critical for neurodevelopment and mature CNS functions including synaptic plasticity. We quantified genes from key EGF and immune system pathways for mRNA levels and eight immune proteins in post-mortem dorsolateral prefrontal (DLPFC; Brodmann's Area (BA) 46) and orbitofrontal (OFC; BA11) cortices from people with schizophrenia, mood disorders and neurotypical controls. In BA46, 64 genes were differentially expressed, predominantly in schizophrenia, where attenuated expression of the MAPK-ERK, NRG1-PI3K-AKT and mTOR cascades indicated reduced EGF system signalling, and similarly diminished immune molecular expression, notably in TLR, TNF and complement pathways, along with low NF-κB1 and elevated IL12RB2 protein levels were noted. There was nominal evidence for altered convergence between ErbB-PI3K-AKT-mTOR and TLR pathways in BA46 in schizophrenia. Comparatively minimal changes were noted in BA11. Overall, distinct pathway gene expression changes may reflect variant pathological processes involving immune and EGF system signalling between schizophrenia and mood disorder, particularly in DLPFC. Further, the abnormal convergence between innate immune signalling and candidate EGF signalling pathways may indicate a pathologically important interaction in the developing brain in response to environmental stressors.
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Affiliation(s)
- Tharini Ketharanathan
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3052, Australia.
- Department of Psychiatry, University of Melbourne, Parkville, VIC 3052, Australia.
- Northern Health, Epping, VIC 3076, Australia.
| | - Avril Pereira
- The Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC 3052, Australia
- Department of Psychiatry, University of Melbourne, Parkville, VIC 3052, Australia
| | - Suresh Sundram
- Department of Psychiatry, School of Clinical Sciences, Monash University, Clayton, VIC 3168, Australia
- Mental Health Program, Monash Health, Clayton, VIC 3168, Australia
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2
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Islam MK, Islam MR, Rahman MH, Islam MZ, Hasan MM, Mamun MMI, Moni MA. Integrated bioinformatics and statistical approach to identify the common molecular mechanisms of obesity that are linked to the development of two psychiatric disorders: Schizophrenia and major depressive disorder. PLoS One 2023; 18:e0276820. [PMID: 37494308 PMCID: PMC10370737 DOI: 10.1371/journal.pone.0276820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 10/13/2022] [Indexed: 07/28/2023] Open
Abstract
Obesity is a chronic multifactorial disease characterized by the accumulation of body fat and serves as a gateway to a number of metabolic-related diseases. Epidemiologic data indicate that Obesity is acting as a risk factor for neuro-psychiatric disorders such as schizophrenia, major depression disorder and vice versa. However, how obesity may biologically interact with neurodevelopmental or neurological psychiatric conditions influenced by hereditary, environmental, and other factors is entirely unknown. To address this issue, we have developed a pipeline that integrates bioinformatics and statistical approaches such as transcriptomic analysis to identify differentially expressed genes (DEGs) and molecular mechanisms in patients with psychiatric disorders that are also common in obese patients. Biomarker genes expressed in schizophrenia, major depression, and obesity have been used to demonstrate such relationships depending on the previous research studies. The highly expressed genes identify commonly altered signalling pathways, gene ontology pathways, and gene-disease associations across disorders. The proposed method identified 163 significant genes and 134 significant pathways shared between obesity and schizophrenia. Similarly, there are 247 significant genes and 65 significant pathways that are shared by obesity and major depressive disorder. These genes and pathways increase the likelihood that psychiatric disorders and obesity are pathogenic. Thus, this study may help in the development of a restorative approach that will ameliorate the bidirectional relation between obesity and psychiatric disorder. Finally, we also validated our findings using genome-wide association study (GWAS) and whole-genome sequence (WGS) data from SCZ, MDD, and OBE. We confirmed the likely involvement of four significant genes both in transcriptomic and GWAS/WGS data. Moreover, we have performed co-expression cluster analysis of the transcriptomic data and compared it with the results of transcriptomic differential expression analysis and GWAS/WGS.
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Affiliation(s)
- Md Khairul Islam
- Dept. of Information Communication Technology, Islamic University, Kushtia, Bangladesh
| | - Md Rakibul Islam
- Dept. of Information Communication Technology, Islamic University, Kushtia, Bangladesh
| | - Md Habibur Rahman
- Dept. of Computer Science Engineering, Islamic University, Kushtia, Bangladesh
| | - Md Zahidul Islam
- Dept. of Information Communication Technology, Islamic University, Kushtia, Bangladesh
| | - Md Mehedi Hasan
- Department of Statistics, University of Rajshahi, Rajshahi, Bangladesh
| | - Md Mainul Islam Mamun
- Department of Applied Physics and Electronic Engineering, University of Rajshahi, Rajshahi, Bangladesh
| | - Mohammad Ali Moni
- Dept. of Computer Science and Engineering, Pabna University of Science and Technology, Pabna, Bangladesh
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Batista-Brito R, Majumdar A, Nuño A, Ward C, Barnes C, Nikouei K, Vinck M, Cardin JA. Developmental loss of ErbB4 in PV interneurons disrupts state-dependent cortical circuit dynamics. Mol Psychiatry 2023; 28:3133-3143. [PMID: 37069344 PMCID: PMC10618960 DOI: 10.1038/s41380-023-02066-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 04/19/2023]
Abstract
GABAergic inhibition plays an important role in the establishment and maintenance of cortical circuits during development. Neuregulin 1 (Nrg1) and its interneuron-specific receptor ErbB4 are key elements of a signaling pathway critical for the maturation and proper synaptic connectivity of interneurons. Using conditional deletions of the ERBB4 gene in mice, we tested the role of this signaling pathway at two developmental timepoints in parvalbumin-expressing (PV) interneurons, the largest subpopulation of cortical GABAergic cells. Loss of ErbB4 in PV interneurons during embryonic, but not late postnatal development leads to alterations in the activity of excitatory and inhibitory cortical neurons, along with severe disruption of cortical temporal organization. These impairments emerge by the end of the second postnatal week, prior to the complete maturation of the PV interneurons themselves. Early loss of ErbB4 in PV interneurons also results in profound dysregulation of excitatory pyramidal neuron dendritic architecture and a redistribution of spine density at the apical dendritic tuft. In association with these deficits, excitatory cortical neurons exhibit normal tuning for sensory inputs, but a loss of state-dependent modulation of the gain of sensory responses. Together these data support a key role for early developmental Nrg1/ErbB4 signaling in PV interneurons as a powerful mechanism underlying the maturation of both the inhibitory and excitatory components of cortical circuits.
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Affiliation(s)
- Renata Batista-Brito
- Department of Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA.
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA.
- Department of Psychiatry and Behavioral Sciences, Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA.
- Department of Genetics, Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA.
| | - Antara Majumdar
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Sherrington Road, Oxford, OX1 3PT, England
| | - Alejandro Nuño
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
| | - Claire Ward
- Department of Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA
| | - Clayton Barnes
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
| | - Kasra Nikouei
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Martin Vinck
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Deutschordenstraße 46, 60528, Frankfurt, Germany
| | - Jessica A Cardin
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA.
- Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven, CT, 06520, USA.
- Wu Tsai Institute, Yale University, 100 College St., New Haven, CT, 06520, USA.
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The laterodorsal tegmentum-ventral tegmental area circuit controls depression-like behaviors by activating ErbB4 in DA neurons. Mol Psychiatry 2023; 28:1027-1045. [PMID: 33990773 PMCID: PMC8590712 DOI: 10.1038/s41380-021-01137-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 04/08/2021] [Accepted: 04/19/2021] [Indexed: 01/07/2023]
Abstract
Dopamine (DA) neurons in the ventral tegmental area (VTA) are critical to coping with stress. However, molecular mechanisms regulating their activity and stress-induced depression were not well understood. We found that the receptor tyrosine kinase ErbB4 in VTA was activated in stress-susceptible mice. Deleting ErbB4 in VTA or in DA neurons, or chemical genetic inhibition of ErbB4 kinase activity in VTA suppressed the development of chronic social defeat stress (CSDS)-induced depression-like behaviors. ErbB4 activation required the expression of NRG1 in the laterodorsal tegmentum (LDTg); LDTg-specific deletion of NRG1 inhibited depression-like behaviors. NRG1 and ErbB4 suppressed potassium currents of VTA DA neurons and increased their firing activity. Finally, we showed that acute inhibition of ErbB4 after stress attenuated DA neuron hyperactivity and expression of depression-like behaviors. Together, these observations demonstrate a critical role of NRG1-ErbB4 signaling in regulating depression-like behaviors and identify an unexpected mechanism by which the LDTg-VTA circuit regulates the activity of DA neurons.
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Hu L, Zhang L. Adult neural stem cells and schizophrenia. World J Stem Cells 2022; 14:219-230. [PMID: 35432739 PMCID: PMC8968214 DOI: 10.4252/wjsc.v14.i3.219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/18/2021] [Accepted: 03/07/2022] [Indexed: 02/06/2023] Open
Abstract
Schizophrenia (SCZ) is a devastating and complicated mental disorder accompanied by variable positive and negative symptoms and cognitive deficits. Although many genetic risk factors have been identified, SCZ is also considered as a neurodevelopmental disorder. Elucidation of the pathogenesis and the development of treatment is challenging because complex interactions occur between these genetic risk factors and environment in essential neurodevelopmental processes. Adult neural stem cells share a lot of similarities with embryonic neural stem cells and provide a promising model for studying neuronal development in adulthood. These adult neural stem cells also play an important role in cognitive functions including temporal and spatial memory encoding and context discrimination, which have been shown to be closely linked with many psychiatric disorders, such as SCZ. Here in this review, we focus on the SCZ risk genes and the key components in related signaling pathways in adult hippocampal neural stem cells and summarize their roles in adult neurogenesis and animal behaviors. We hope that this would be helpful for the understanding of the contribution of dysregulated adult neural stem cells in the pathogenesis of SCZ and for the identification of potential therapeutic targets, which could facilitate the development of novel medication and treatment.
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Affiliation(s)
- Ling Hu
- Department of Laboratory Animal Science and Institutes of Brain Science, Fudan University, Shanghai 200032, China
| | - Lei Zhang
- Shanghai Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center) and Department of Anatomy and Neurobiology, Tongji University School of Medicine, Shanghai 200092, China
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Yang H, Pan W, Xiao W, Yang M, Xu J, Li J, Zhang X. Antipsychotic drugs increase Neuregulin1β1 serum levels in first-episode drug-naïve patients and chronic schizophrenia with suggestions for improving the treatment of psychotic symptoms. BMC Psychiatry 2022; 22:217. [PMID: 35337293 PMCID: PMC8957169 DOI: 10.1186/s12888-022-03856-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 03/15/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Neuregulin1 (NRG1) plays a role in neuronal migration, regulation of synaptic plasticity, and neural survival, and has been considered to be among the candidate genes for schizophrenia. This study focused on the variations in serum NRG1β1 levels following antipsychotic treatment and the relationship between NRG1β1 levels and improvements in psychotic symptoms among first-episode drug-naïve (FEDN) patients and patients with chronic schizophrenia. METHODS A total of 100 patients with schizophrenia were recruited and compared with 79 matched healthy controls. All patients had been drug-naïve for at least four weeks. Serum NRG1β1 levels and positive and negative syndrome scale (PANSS) scores were measured at baseline and after four weeks. Serum NRG1β1 levels were measured using sandwich enzyme-linked immunosorbent assays (ELISAs). RESULTS Baseline NRG1β1 levels were significantly lower in patients with schizophrenia than in healthy controls. NRG1β1 levels increased significantly following antipsychotic treatment. NRG1β1 levels gradually increased with declining PANSS scores and its three subscales during antipsychotic therapy. The levels of NRG1β1 increased significantly in responders after four weeks of treatment, although nonresponders showed no such effect. Correlation analyses showed that the levels of NRG1β1 were negatively correlated with the duration of illness and positively correlated with improvement in symptoms. CONCLUSION The levels of serum NRG1β1 and the therapeutic effects gradually increased following treatment, indicating that NRG1β1 may be an indicator of therapy, and that it may also be associated with the pathophysiological mechanism causing schizophrenia, although this possible pathway requires further investigation.
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Affiliation(s)
- Haidong Yang
- Department of Psychiatry, The Fourth People’s Hospital of Lianyungang, The Affiliated KangDa College of Nanjing Medical University, Lianyungang, 222003 P.R. China
| | - Wen Pan
- Institute of Mental Health, Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu 215137 P.R. China
| | - Wenhuan Xiao
- Department of Psychiatry, Affiliated WuTaiShan Hospital of Medical College of Yangzhou University, Yangzhou, 225003 P.R. China
| | - Man Yang
- Department of Psychiatry, The Fourth People’s Hospital of Lianyungang, The Affiliated KangDa College of Nanjing Medical University, Lianyungang, 222003 P.R. China
| | - Jianchun Xu
- Department of Clinical Laboratory, The Fourth People’s Hospital of Lianyungang, The Affiliated KangDa College of Nanjing Medical University, Lianyungang, 222003 P.R. China
| | - Jin Li
- Institute of Mental Health, Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu 215137 P.R. China
| | - Xiaobin Zhang
- Institute of Mental Health, Suzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Suzhou, Jiangsu 215137 P.R. China
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7
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Prats C, Fatjó-Vilas M, Penzol MJ, Kebir O, Pina-Camacho L, Demontis D, Crespo-Facorro B, Peralta V, González-Pinto A, Pomarol-Clotet E, Papiol S, Parellada M, Krebs MO, Fañanás L. Association and epistatic analysis of white matter related genes across the continuum schizophrenia and autism spectrum disorders: The joint effect of NRG1-ErbB genes. World J Biol Psychiatry 2022; 23:208-218. [PMID: 34338147 DOI: 10.1080/15622975.2021.1939155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND Schizophrenia-spectrum disorders (SSD) and Autism spectrum disorders (ASD) are neurodevelopmental disorders that share clinical, cognitive, and genetic characteristics, as well as particular white matter (WM) abnormalities. In this study, we aimed to investigate the role of a set of oligodendrocyte/myelin-related (OMR) genes and their epistatic effect on the risk for SSD and ASD. METHODS We examined 108 SNPs in a set of 22 OMR genes in 1749 subjects divided into three independent samples (187 SSD trios, 915 SSD cases/control, and 91 ASD trios). Genetic association and gene-gene interaction analyses were conducted with PLINK and MB-MDR, and permutation procedures were implemented in both. RESULTS Some OMR genes showed an association trend with SSD, while after correction, the ones that remained significantly associated were MBP, ERBB3, and AKT1. Significant gene-gene interactions were found between (i) NRG1*MBP (perm p-value = 0.002) in the SSD trios sample, (ii) ERBB3*AKT1 (perm p-value = 0.001) in the SSD case-control sample, and (iii) ERBB3*QKI (perm p-value = 0.0006) in the ASD trios sample. DISCUSSION Our results suggest the implication of OMR genes in the risk for both SSD and ASD and highlight the role of NRG1 and ERBB genes. These findings are in line with the previous evidence and may suggest pathophysiological mechanisms related to NRG1/ERBBs signalling in these disorders.
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Affiliation(s)
- C Prats
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona, Spain; Institut de Biomedicina de la Universitat de Barcelona (IBUB), Barcelona, Spain.,Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,Institut d'Investigació Biomèdica de Bellvitge, Hospital Duran i Reynals, L'Hospitalet de Llobregat, Barcelona, Spain
| | - M Fatjó-Vilas
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona, Spain; Institut de Biomedicina de la Universitat de Barcelona (IBUB), Barcelona, Spain.,Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,FIDMAG Germanes Hospitalàries Research Foundation, Barcelona, Spain
| | - M J Penzol
- Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,Department of Child and Adolescent Psychiatry, Institute of Psychiatry and Mental Health, Hospital General Universitario Gregorio Marañón, School of Medicine, Universidad Complutense, IiSGM, Madrid, Spain
| | - O Kebir
- INSERM, U1266, Laboratory "Pathophysiology of psychiatric disorders", Institute of psychiatry and neurosciences of Paris, Paris, France.,GHU Psychiatrie et Neurosciences de Paris, Paris, France
| | - L Pina-Camacho
- Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,Department of Child and Adolescent Psychiatry, Institute of Psychiatry and Mental Health, Hospital General Universitario Gregorio Marañón, School of Medicine, Universidad Complutense, IiSGM, Madrid, Spain
| | - D Demontis
- Department of Biomedicine, Aarhus University, Aarhus, Denmark; The Lundbeck Foundation Initiative for Integrative Psychiatric Research iPSYCH, Aarhus, Denmark
| | - B Crespo-Facorro
- Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,University Hospital Virgen del Rocio, IbiS Department of Psychiatry, School of Medicine, University of Sevilla, Sevilla, Spain
| | - V Peralta
- Gerencia de Salud Mental, Servicio Navarro de Salud-Osasunbidea, Pamplona, Navarra, Spain.,Instituto de Investigación Sanitaria de Navarra (IdiSNa), Pamplona, Navarra, Spain
| | - A González-Pinto
- Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,Psychiatry Service, University Hospital of Alava-Santiago, EMBREC, EHU/UPV University of the Basque Country, Kronikgune, Vitoria, Spain
| | - E Pomarol-Clotet
- Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,FIDMAG Germanes Hospitalàries Research Foundation, Barcelona, Spain
| | - S Papiol
- Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,Institute of Psychiatric Phenomics and Genomics (IPPG), University Hospital, LMU Munich, Munich, Germany.,Department of Psychiatry, University Hospital, Ludwig Maximilian University, Munich, Germany
| | - M Parellada
- Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,Department of Child and Adolescent Psychiatry, Institute of Psychiatry and Mental Health, Hospital General Universitario Gregorio Marañón, School of Medicine, Universidad Complutense, IiSGM, Madrid, Spain
| | - M O Krebs
- INSERM, U1266, Laboratory "Pathophysiology of psychiatric disorders", Institute of psychiatry and neurosciences of Paris, Paris, France.,University Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine Paris Descartes, Service Hospitalo-Universitaire, Centre Hospitalier Sainte-Anne, Paris, France
| | - L Fañanás
- Departament de Biologia Evolutiva, Ecologia i Ciències Ambientals, Facultat de Biologia, Universitat de Barcelona, Spain; Institut de Biomedicina de la Universitat de Barcelona (IBUB), Barcelona, Spain.,Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
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Götze T, Soto-Bernardini MC, Zhang M, Mießner H, Linhoff L, Brzózka MM, Velanac V, Dullin C, Ramos-Gomes F, Peng M, Husseini H, Schifferdecker E, Fledrich R, Sereda MW, Willig K, Alves F, Rossner MJ, Nave KA, Zhang W, Schwab MH. Hyperactivity is a Core Endophenotype of Elevated Neuregulin-1 Signaling in Embryonic Glutamatergic Networks. Schizophr Bull 2021; 47:1409-1420. [PMID: 33871014 PMCID: PMC8379540 DOI: 10.1093/schbul/sbab027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The neuregulin 1 (NRG1) ErbB4 module is at the core of an "at risk" signaling pathway in schizophrenia. Several human studies suggest hyperstimulation of NRG1-ErbB4 signaling as a plausible pathomechanism; however, little is known about the significance of stage-, brain area-, or neural cell type-specific NRG1-ErbB4 hyperactivity for disease-relevant brain endophenotypes. To address these spatiotemporal aspects, we generated transgenic mice for Cre recombinase-mediated overexpression of cystein-rich domain (CRD) NRG1, the most prominent NRG1 isoform in the brain. A comparison of "brain-wide" vs cell type-specific CRD-NRG1 overexpressing mice revealed that pathogenic CRD-NRG1 signals for ventricular enlargement and neuroinflammation originate outside glutamatergic neurons and suggests a subcortical function of CRD-NRG1 in the control of body weight. Embryonic onset of CRD-NRG1 in glutamatergic cortical networks resulted in reduced inhibitory neurotransmission and locomotor hyperactivity. Our findings identify ventricular enlargement and locomotor hyperactivity, 2 main endophenotypes of schizophrenia, as specific consequences of spatiotemporally distinct expression profiles of hyperactivated CRD-NRG1 signaling.
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Affiliation(s)
- Tilmann Götze
- Department of Neurogenetics, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany,Cellular Neurophysiology, Hannover Medical School, Hannover, Germany
| | - Maria Clara Soto-Bernardini
- Department of Neurogenetics, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany,Present address: Center for Research in Biotechnology (CIB)/Costa Rica Institute of Technology (TEC), Cartago, Costa Rica
| | - Mingyue Zhang
- Laboratory of Molecular Psychiatry, Department of Mental Health, Westfälische Wilhelm-University of Münster, Münster, Germany
| | - Hendrik Mießner
- Cellular Neurophysiology, Hannover Medical School, Hannover, Germany,Present address: Department of Pharmacology, University of Cambridge, Cambridge, UK
| | - Lisa Linhoff
- Department of Neurogenetics, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany,Department of Neurology, University Medicine Göttingen (UMG), Göttingen, Germany
| | - Magdalena M Brzózka
- Department of Psychiatry, Ludwig-Maximilian-University Munich, Munich, Germany
| | - Viktorija Velanac
- Department of Neurogenetics, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany
| | - Christian Dullin
- Institute for Diagnostic and Interventional Radiology, University Medical Center, Goettingen, Germany,Translational Molecular Imaging, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany,Italian Synchrotron “Elettra,"Trieste, Italy
| | - Fernanda Ramos-Gomes
- Translational Molecular Imaging, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany
| | - Maja Peng
- Laboratory of Molecular Psychiatry, Department of Mental Health, Westfälische Wilhelm-University of Münster, Münster, Germany
| | - Hümeyra Husseini
- Laboratory of Molecular Psychiatry, Department of Mental Health, Westfälische Wilhelm-University of Münster, Münster, Germany
| | - Eva Schifferdecker
- Laboratory of Molecular Psychiatry, Department of Mental Health, Westfälische Wilhelm-University of Münster, Münster, Germany
| | - Robert Fledrich
- Institute of Anatomy, University of Leipzig, Leipzig, Germany
| | - Michael W Sereda
- Department of Neurogenetics, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany,Department of Neurology, University Medicine Göttingen (UMG), Göttingen, Germany
| | - Katrin Willig
- Center for Nanoscale Microscopy and Molecular Physiology of the Brain, University Medical Center Göttingen, Göttingen, Germany,Max Planck Institute of Experimental Medicine, Göttingen, Germany
| | - Frauke Alves
- Institute for Diagnostic and Interventional Radiology, University Medical Center, Goettingen, Germany,Translational Molecular Imaging, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany
| | - Moritz J Rossner
- Department of Psychiatry, Ludwig-Maximilian-University Munich, Munich, Germany
| | - Klaus-Armin Nave
- Department of Neurogenetics, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany
| | - Weiqi Zhang
- Laboratory of Molecular Psychiatry, Department of Mental Health, Westfälische Wilhelm-University of Münster, Münster, Germany
| | - Markus H Schwab
- Department of Neurogenetics, Max-Planck-Institute of Experimental Medicine, Goettingen, Germany,Cellular Neurophysiology, Hannover Medical School, Hannover, Germany,Department of Neuropathology, University Hospital Leipzig, Leipzig, Germany,To whom correspondence should be addressed; tel: +49-341-97-25677; fax: +49-341-97-15049, e-mail:
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Yang JM, Shen CJ, Chen XJ, Kong Y, Liu YS, Li XW, Chen Z, Gao TM, Li XM. erbb4 Deficits in Chandelier Cells of the Medial Prefrontal Cortex Confer Cognitive Dysfunctions: Implications for Schizophrenia. Cereb Cortex 2020; 29:4334-4346. [PMID: 30590426 DOI: 10.1093/cercor/bhy316] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/18/2018] [Accepted: 11/21/2018] [Indexed: 12/20/2022] Open
Abstract
erbb4 is a known susceptibility gene for schizophrenia. Chandelier cells (ChCs, also known as axo-axonic cells) are a distinct GABAergic interneuron subtype that exclusively target the axonal initial segment, which is the site of pyramidal neuron action potential initiation. ChCs are a source of ErbB4 expression and alterations in ChC-pyramidal neuron connectivity occur in the medial prefrontal cortex (mPFC) of schizophrenic patients and animal models of schizophrenia. However, the contribution of ErbB4 in mPFC ChCs to the pathogenesis of schizophrenia remains unknown. By conditional deletion or knockdown of ErbB4 from mPFC ChCs, we demonstrated that ErbB4 deficits led to impaired ChC-pyramidal neuron connections and cognitive dysfunctions. Furthermore, the cognitive dysfunctions were normalized by L-838417, an agonist of GABAAα2 receptors enriched in the axonal initial segment. Given that cognitive dysfunctions are a core symptom of schizophrenia, our results may provide a new perspective for understanding the etiology of schizophrenia and suggest that GABAAα2 receptors may be potential pharmacological targets for its treatment.
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Affiliation(s)
- Jian-Ming Yang
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, NHC and CAMS Key Laboratory of Medical Neurobiology, Joint Institute for Genetics and Genome Medicine between Zhejiang University and University of Toronto, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Mental Health of the Ministry of Education, Guangdong Province Key Laboratory of Psychiatric Disorders, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Chen-Jie Shen
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, NHC and CAMS Key Laboratory of Medical Neurobiology, Joint Institute for Genetics and Genome Medicine between Zhejiang University and University of Toronto, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiao-Juan Chen
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, NHC and CAMS Key Laboratory of Medical Neurobiology, Joint Institute for Genetics and Genome Medicine between Zhejiang University and University of Toronto, Zhejiang University School of Medicine, Hangzhou, China
| | - Ying Kong
- Key Laboratory of Mental Health of the Ministry of Education, Guangdong Province Key Laboratory of Psychiatric Disorders, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yi-Si Liu
- Key Laboratory of Mental Health of the Ministry of Education, Guangdong Province Key Laboratory of Psychiatric Disorders, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xiao-Wen Li
- Key Laboratory of Mental Health of the Ministry of Education, Guangdong Province Key Laboratory of Psychiatric Disorders, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zhong Chen
- Department of Pharmacology, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Tian-Ming Gao
- Key Laboratory of Mental Health of the Ministry of Education, Guangdong Province Key Laboratory of Psychiatric Disorders, Department of Neurobiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xiao-Ming Li
- Center for Neuroscience and Department of Neurology of Second Affiliated Hospital, NHC and CAMS Key Laboratory of Medical Neurobiology, Joint Institute for Genetics and Genome Medicine between Zhejiang University and University of Toronto, Zhejiang University School of Medicine, Hangzhou, China
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10
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Takamatsu Y, Ho G, Waragai M, Wada R, Sugama S, Takenouchi T, Masliah E, Hashimoto M. Transgenerational Interaction of Alzheimer's Disease with Schizophrenia through Amyloid Evolvability. J Alzheimers Dis 2020; 68:473-481. [PMID: 30741673 PMCID: PMC6484278 DOI: 10.3233/jad-180986] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Alzheimer's disease (AD), the most common neurodegenerative dementia, leads to memory dysfunction due to widespread neuronal loss associated with aggregation of amyloidogenic proteins (APs), while schizophrenia (SCZ) represents a major psychiatric disorder characterized by delusions, hallucinations, and other cognitive abnormalities, the underlying mechanisms of which remain obscure. Although AD and SCZ partially overlap in terms of psychiatric symptoms and some aspects of cognitive impairment, the causal relationship between AD and SCZ is unclear. Based on the similarity of APs with yeast prion in terms of stress-induced protein aggregation, we recently proposed that evolvability of APs might be an epigenetic phenomenon to transmit stress information of parental brain to cope with the stressors in offspring. Although amyloid evolvability may be beneficial in evolution, AD might be manifested during parental aging as the mechanism of antagonistic pleiotropy phenomenon. Provided that accumulating evidence implicates stress as an important factor in SCZ, the main objective of this paper is to better understand the possible connection of AD and SCZ through amyloid evolvability. Hypothetically, the delivery of information of stress by APs may be less efficient under the decreased evolvability conditions such as disease-modifying treatment, leading to SCZ in offspring. Conversely, the increased evolvability conditions including gene mutations of APs are supposed to be beneficial for offspring, but might lead to AD in parents. Collectively, AD and SCZ might transgenerationally interfere with each other through amyloid evolvability, and this could explain why both AD and SCZ have not been selected out through evolution.
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Affiliation(s)
- Yoshiki Takamatsu
- Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
| | - Gilbert Ho
- PCND Neuroscience Research Institute, Poway, CA, USA
| | - Masaaki Waragai
- Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
| | - Ryoko Wada
- Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
| | - Shuei Sugama
- Department of Physiology, Nippon Medical School, Tokyo, Japan
| | - Takato Takenouchi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Eliezer Masliah
- Division of Neurosciences, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - Makoto Hashimoto
- Tokyo Metropolitan Institute of Medical Science, Setagaya-ku, Tokyo, Japan
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11
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Zhang Z, Li Y, He F, Cui Y, Zheng Y, Li R. Sex differences in circulating neuregulin1-β1 and β-secretase 1 expression in childhood-onset schizophrenia. Compr Psychiatry 2020; 100:152176. [PMID: 32430144 DOI: 10.1016/j.comppsych.2020.152176] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 04/10/2020] [Accepted: 04/13/2020] [Indexed: 02/01/2023] Open
Abstract
OBJECTIVE Early-onset schizophrenia is a severe and rare form of schizophrenia that is clinically and neurobiologically continuous with the adult form of schizophrenia. Neuregulin1 (NRG1)-mediated signaling is crucial for early neurodevelopment, which exerts its function by limited β-secretase 1 (BACE1) proteolysis processing. However, circulating neuregulin1-β1 (NRG1-β1), an isoform of NRG1, and its cleavage enzyme BACE1 have not been studied in early-onset patients with schizophrenia. METHODS In this study, we collected plasma and clinical information from 71 young patients (7 ≤ age years ≤20) with schizophrenia and 53 age- and sex-matched healthy controls. Immunoassay was used to test levels of circulating NRG1-β1 and BACE1 expression. We further analyzed the relationship of disease-onset age and gender with NRG1-β1 and BACE1 levels. RESULTS We found that circulating plasma levels of NRG1-β1 were significantly decreased in young patients with early-onset schizophrenia. In males with childhood onset schizophrenia (COS), NRG1-β1 was reduced and was inversely correlated with positive symptom of PANSS; moreover, these male patients with higher plasma BACE1 levels showed more severe general symptoms of PANSS and defective social functioning; whereas, no aforementioned results were found in adolescent-onset schizophrenia (AOS). Notably, young female patients with COS and AOS had no significant change in NRG1-β1 and BACE1, which demonstrated a sex-dependent effect in early-onset schizophrenia. CONCLUSION Our results suggest that decreased levels of NRG1-β1 and its cleavage enzyme BACE1 contribute to increased risk of etiology of schizophrenia. Synthetic biomarkers may have clinical applications for the early diagnosis of male COS.
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Affiliation(s)
- Zhengrong Zhang
- National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Yuhong Li
- Beijing Institute for Brain Disorders, Capital Medical University, Beijing 100069, China
| | - Fan He
- National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Yonghua Cui
- National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China
| | - Yi Zheng
- National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China.
| | - Rena Li
- National Clinical Research Center for Mental Disorders, Beijing Key Laboratory of Mental Disorders, Beijing Anding Hospital, Capital Medical University, Beijing 100088, China; Beijing Institute for Brain Disorders, Capital Medical University, Beijing 100069, China.
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12
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De Simone R, Butera A, Armida M, Pezzola A, Boirivant M, Potenza RL, Ricceri L. Beneficial Effects of Fingolimod on Social Interaction, CNS and Peripheral Immune Response in the BTBR Mouse Model of Autism. Neuroscience 2020; 435:22-32. [PMID: 32229233 DOI: 10.1016/j.neuroscience.2020.03.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/01/2020] [Accepted: 03/24/2020] [Indexed: 12/13/2022]
Abstract
Autism Spectrum Disorders (ASD) are neurodevelopmental disorders characterized by social communication deficits and repetitive/stereotyped behaviours. We evaluated the effects of a chronic treatment with the immunomodulator drug Fingolimod (FTY720 - a non-selective Sphingosine 1-Phosphate Receptor ligand) in an ASD model, the BTBR T+tf/J (BTBR) mouse strain. In adult BTBR males, chronic FTY720 treatment (4 weeks) increased social and vocal response during a male-female interaction and hippocampal expression of BDNF and Neuregulin 1, two trophic factors reduced in BTBR when compared to control C57 mice. FTY720 also re-established the expression of IL-1β and MnSOD in the hippocampus, whereas it did not modify IL-6 mRNA content. In addition to its central effect, FTY720 modulated the activation state of peripheral macrophages in the BTBR model, both in basal conditions and after stimulation with an immune challenge. Furthermore, IL-6 mRNA colonic content of BTBR mice, reduced when compared with C57 mice, was normalized by chronic treatment with FTY720. Our study, while indicating FTY720 as a tool to attenuate relevant alterations of the BTBR neurobehavioural phenotype, emphasizes the importance of gut mucosal immune evaluation as an additional target that deserve to be investigated in preclinical studies of anti-inflammatory therapeutic approaches in ASD.
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Affiliation(s)
- Roberta De Simone
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Alessia Butera
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Monica Armida
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Antonella Pezzola
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Monica Boirivant
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy
| | - Rosa Luisa Potenza
- National Centre for Drug Research and Evaluation, Istituto Superiore di Sanità, Rome, Italy.
| | - Laura Ricceri
- Centre for Behavioural Science and Mental Health, Istituto Superiore di Sanità, Rome, Italy.
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13
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Li R, Chen M, Tian H, Li G, Wang L, Tu W, Chen G, Ping J, Zhuo C, Li J. Association between ErbB4 gene function in synaptogenesis and schizophrenia pathogenesis. BIOTECHNOL BIOTEC EQ 2020. [DOI: 10.1080/13102818.2020.1725638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Affiliation(s)
- Ranli Li
- Department of Psychiatry, School of Basic Medical Science, Tianjin Medical University, Tianjin, PR China
- Department of Psychiatric-Biological Laboratory, Tianjin Anding Hospital, Nankai University Affiliated Anding Hospital, Tianjin Mental Health Center, Tianjin, PR China
| | - Min Chen
- Department of Psychiatry, School of Mental Health, Jining Medical University, Jining, Shandong Province, PR China
| | - Hongjun Tian
- Department of Psychiatric-Biological Laboratory, Tianjin Anding Hospital, Nankai University Affiliated Anding Hospital, Tianjin Mental Health Center, Tianjin, PR China
| | - Gongying Li
- Department of Psychiatry, School of Mental Health, Jining Medical University, Jining, Shandong Province, PR China
| | - Lina Wang
- Department of Psychiatric-Biological Laboratory, Tianjin Anding Hospital, Nankai University Affiliated Anding Hospital, Tianjin Mental Health Center, Tianjin, PR China
| | - Wenzhen Tu
- Department of Psychiatry, Institute of Biological Laboratory, Wenzhou Seventh People’s Hospital, Wenzhou, Zhejiang Province, PR China
| | - Guangdong Chen
- Department of Psychiatry, Institute of Biological Laboratory, Wenzhou Seventh People’s Hospital, Wenzhou, Zhejiang Province, PR China
| | - Jing Ping
- Department of Psychiatry, Institute of Biological Laboratory, Wenzhou Seventh People’s Hospital, Wenzhou, Zhejiang Province, PR China
| | - Chuanjun Zhuo
- Department of Psychiatric-Biological Laboratory, Tianjin Anding Hospital, Nankai University Affiliated Anding Hospital, Tianjin Mental Health Center, Tianjin, PR China
- Department of Psychiatry, School of Mental Health, Jining Medical University, Jining, Shandong Province, PR China
- Department of Psychiatry, Institute of Biological Laboratory, Wenzhou Seventh People’s Hospital, Wenzhou, Zhejiang Province, PR China
| | - Jie Li
- Department of Psychiatry, School of Basic Medical Science, Tianjin Medical University, Tianjin, PR China
- Department of Psychiatric-Biological Laboratory, Tianjin Anding Hospital, Nankai University Affiliated Anding Hospital, Tianjin Mental Health Center, Tianjin, PR China
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14
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Ward KR, Featherstone RE, Naschek MJ, Melnychenko O, Banerjee A, Yi J, Gifford RL, Borgmann-Winter KE, Salter MW, Hahn CG, Siegel SJ. Src deficient mice demonstrate behavioral and electrophysiological alterations relevant to psychiatric and developmental disease. Prog Neuropsychopharmacol Biol Psychiatry 2019; 93:84-92. [PMID: 30826459 DOI: 10.1016/j.pnpbp.2019.02.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 02/26/2019] [Accepted: 02/27/2019] [Indexed: 01/12/2023]
Abstract
Much evidence suggests that hypofunction of the N-methyl-d-aspartate glutamate receptor (NMDAR) may contribute broadly towards a subset of molecular, cognitive and behavioral abnormalities common among psychiatric and developmental diseases. However, little is known about the specific molecular changes that lead to NMDAR dysfunction. As such, personalized approaches to remediating NMDAR dysfunction based on a specific etiology remains a challenge. Sarcoma tyrosine kinase (Src) serves as a hub for multiple signaling mechanisms affecting GluN2 phosphorylation and can be disrupted by convergent alterations of various signaling pathways. We recently showed reduced Src signaling in post mortem tissue from schizophrenia patients, despite increased MK-801 binding and NMDA receptor complex expression in the postsynaptic density (PSD). These data suggest that Src dysregulation may be an important underlying mechanism responsible for reduced glutamate signaling. Despite this evidence for a central role of Src in NMDAR signaling, little is known about how reductions in Src activity might regulate phenotypic changes in cognition and behavior. As such, the current study sought to characterize behavioral and electrophysiological phenotypes in mice heterozygous for the Src Acl gene (Src+/- mice). Src+/- mice demonstrated decreased sociability and working memory relative to Src+/+ (WT) mice while no significant differences were seen on locomotive activity and anxiety-related behavior. In relation to WT mice, Src+/- mice showed decreased mid-latency P20 auditory event related potential (aERP) amplitudes, decreased mismatch negativity (MMN) and decreased evoked gamma power, which was only present in males. These data indicate that Src+/- mice are a promising new model to help understand the pathophysiology of these electrophysiological, behavioral and cognitive changes. As such, we propose that Src+/- mice can be used in the future to evaluate potential therapeutic approaches by targeting increased Src activity as a common final pathway for multiple etiologies of SCZ and other diseases characterized by reduced glutamate function.
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Affiliation(s)
- Katelyn R Ward
- Department of Psychiatry, University of Pennsylvania, Philadelphia, USA; Department of Child and Adolescent Psychiatry, Children's Hospital of Philadelphia, Philadelphia, USA
| | - Robert E Featherstone
- Department of Psychiatry, University of Pennsylvania, Philadelphia, USA; Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, USA
| | - Melissa J Naschek
- Department of Psychiatry, University of Pennsylvania, Philadelphia, USA
| | - Olga Melnychenko
- Department of Psychiatry, University of Pennsylvania, Philadelphia, USA
| | - Anamika Banerjee
- Department of Psychiatry, University of Pennsylvania, Philadelphia, USA
| | - Janice Yi
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, USA
| | - Raymond L Gifford
- Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, USA
| | | | - Michael W Salter
- Program in Neurosciences &Mental Health, The Hospital for Sick Children, Toronto, ON, Canada; Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - Chang-Gyu Hahn
- Department of Psychiatry, University of Pennsylvania, Philadelphia, USA
| | - Steven J Siegel
- Department of Psychiatry, University of Pennsylvania, Philadelphia, USA; Department of Psychiatry and Behavioral Sciences, University of California, Los Angeles, USA.
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15
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Genetic recovery of ErbB4 in adulthood partially restores brain functions in null mice. Proc Natl Acad Sci U S A 2018; 115:13105-13110. [PMID: 30498032 DOI: 10.1073/pnas.1811287115] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Neurotrophic factor NRG1 and its receptor ErbB4 play a role in GABAergic circuit assembly during development. ErbB4 null mice possess fewer interneurons, have decreased GABA release, and show impaired behavior in various paradigms. In addition, NRG1 and ErbB4 have also been implicated in regulating GABAergic transmission and plasticity in matured brains. However, current ErbB4 mutant strains are unable to determine whether phenotypes in adult mutant mice result from abnormal neural development. This important question, a glaring gap in understanding NRG1-ErbB4 function, was addressed by using two strains of mice with temporal control of ErbB4 deletion and expression, respectively. We found that ErbB4 deletion in adult mice impaired behavior and GABA release but had no effect on neuron numbers and morphology. On the other hand, some deficits due to the ErbB4 null mutation during development were alleviated by restoring ErbB4 expression at the adult stage. Together, our results indicate a critical role of NRG1-ErbB4 signaling in GABAergic transmission and behavior in adulthood and suggest that restoring NRG1-ErbB4 signaling at the postdevelopmental stage might benefit relevant brain disorders.
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16
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Studying and modulating schizophrenia-associated dysfunctions of oligodendrocytes with patient-specific cell systems. NPJ SCHIZOPHRENIA 2018; 4:23. [PMID: 30451850 PMCID: PMC6242875 DOI: 10.1038/s41537-018-0066-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 10/30/2018] [Indexed: 02/07/2023]
Abstract
Postmortem studies in patients with schizophrenia (SCZ) have revealed deficits in myelination, abnormalities in myelin gene expression and altered numbers of oligodendrocytes in the brain. However, gaining mechanistic insight into oligodendrocyte (OL) dysfunction and its contribution to SCZ has been challenging because of technical hurdles. The advent of individual patient-derived human-induced pluripotent stem cells (hiPSCs), combined with the generation of in principle any neuronal and glial cell type, including OLs and oligodendrocyte precursor cells (OPCs), holds great potential for understanding the molecular basis of the aetiopathogenesis of genetically complex psychiatric diseases such as SCZ and could pave the way towards personalized medicine. The development of neuronal and glial co-culture systems now appears to enable the in vitro study of SCZ-relevant neurobiological endophenotypes, including OL dysfunction and myelination, with unprecedented construct validity. Nonetheless, the meaningful stratification of patients before the subsequent functional analyses of patient-derived cell systems still represents an important bottleneck. Here, to improve the predictive power of ex vivo disease modelling we propose using hiPSC technology to focus on representatives of patient subgroups stratified for genomic and/or phenomic features and neurobiological cell systems. Therefore, this review will outline the evidence for the involvement of OPCs/OLs in SCZ in the context of their proposed functions, including myelination and axon support, the implications for hiPSC-based cellular disease modelling and potential strategies for patient selection.
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17
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18
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Batista-Brito R, Vinck M, Ferguson KA, Chang JT, Laubender D, Lur G, Mossner JM, Hernandez VG, Ramakrishnan C, Deisseroth K, Higley MJ, Cardin JA. Developmental Dysfunction of VIP Interneurons Impairs Cortical Circuits. Neuron 2017; 95:884-895.e9. [PMID: 28817803 DOI: 10.1016/j.neuron.2017.07.034] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 07/08/2017] [Accepted: 07/27/2017] [Indexed: 02/01/2023]
Abstract
GABAergic interneurons play important roles in cortical circuit development. However, there are multiple populations of interneurons and their respective developmental contributions remain poorly explored. Neuregulin 1 (NRG1) and its interneuron-specific receptor ERBB4 are critical genes for interneuron maturation. Using a conditional ErbB4 deletion, we tested the role of vasoactive intestinal peptide (VIP)-expressing interneurons in the postnatal maturation of cortical circuits in vivo. ErbB4 removal from VIP interneurons during development leads to changes in their activity, along with severe dysregulation of cortical temporal organization and state dependence. These alterations emerge during adolescence, and mature animals in which VIP interneurons lack ErbB4 exhibit reduced cortical responses to sensory stimuli and impaired sensory learning. Our data support a key role for VIP interneurons in cortical circuit development and suggest a possible contribution to pathophysiology in neurodevelopmental disorders. These findings provide a new perspective on the role of GABAergic interneuron diversity in cortical development. VIDEO ABSTRACT.
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Affiliation(s)
- Renata Batista-Brito
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA
| | - Martin Vinck
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA; Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Deutschordenstraße 46, 60528 Frankfurt, Germany
| | - Katie A Ferguson
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA
| | - Jeremy T Chang
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA
| | - David Laubender
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA
| | - Gyorgy Lur
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA
| | - James M Mossner
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA
| | - Victoria G Hernandez
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA
| | - Charu Ramakrishnan
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Karl Deisseroth
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA; HHMI, Stanford University, Stanford, CA 94305, USA; Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA
| | - Michael J Higley
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA
| | - Jessica A Cardin
- Yale University School of Medicine, Department of Neuroscience, 333 Cedar St., New Haven, CT, 06520, USA; Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven CT, 06520, USA.
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Erbb4 Deletion from Medium Spiny Neurons of the Nucleus Accumbens Core Induces Schizophrenia-Like Behaviors via Elevated GABA A Receptor α1 Subunit Expression. J Neurosci 2017; 37:7450-7464. [PMID: 28667174 DOI: 10.1523/jneurosci.3948-16.2017] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 06/03/2017] [Accepted: 06/19/2017] [Indexed: 12/21/2022] Open
Abstract
Medium spiny neurons (MSNs), the major GABAergic projection neurons in the striatum, are implicated in many neuropsychiatric diseases such as schizophrenia, but the underlying mechanisms remain unclear. We found that a deficiency in Erbb4, a schizophrenia risk gene, in MSNs of the nucleus accumbens (NAc) core, but not the dorsomedial striatum, markedly induced schizophrenia-like behaviors such as hyperactivity, abnormal marble-burying behavior, damaged social novelty recognition, and impaired sensorimotor gating function in male mice. Using immunohistochemistry, Western blot, RNA interference, electrophysiology, and behavior test studies, we found that these phenomena were mediated by increased GABAA receptor α1 subunit (GABAAR α1) expression, which enhanced inhibitory synaptic transmission on MSNs. These results suggest that Erbb4 in MSNs of the NAc core may contribute to the pathogenesis of schizophrenia by regulating GABAergic transmission and raise the possibility that GABAAR α1 may therefore serve as a new therapeutic target for schizophrenia.SIGNIFICANCE STATEMENT Although ErbB4 is highly expressed in striatal medium spiny neurons (MSNs), its role in this type of neuron has not been reported previously. The present study demonstrates that Erbb4 deletion in nucleus accumbens (NAc) core MSNs can induce schizophrenia-like behaviors via elevated GABAA receptor α1 subunit (GABAAR α1) expression. To our knowledge, this is the first evidence that ErbB4 signaling in the MSNs is involved in the pathology of schizophrenia. Furthermore, restoration of GABAAR α1 in the NAc core, but not the dorsal medium striatum, alleviated the abnormal behaviors. Here, we highlight the role of the NAc core in the pathogenesis of schizophrenia and suggest that GABAAR α1 may be a potential pharmacological target for its treatment.
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Behavioral, Neurophysiological, and Synaptic Impairment in a Transgenic Neuregulin1 (NRG1-IV) Murine Schizophrenia Model. J Neurosci 2017; 36:4859-75. [PMID: 27122041 DOI: 10.1523/jneurosci.4632-15.2016] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 03/22/2016] [Indexed: 11/21/2022] Open
Abstract
UNLABELLED Schizophrenia is a chronic, disabling neuropsychiatric disorder with complex genetic origins. The development of strategies for genome manipulation in rodents provides a platform for understanding the pathogenic role of genes and for testing novel therapeutic agents. Neuregulin 1 (NRG1), a critical developmental neurotrophin, is associated with schizophrenia. The NRG1 gene undergoes extensive alternative splicing and, to date, little is known about the neurobiology of a novel NRG1 isoform, NRG1-IV, which is increased in the brains of individuals with schizophrenia and associated with genetic risk variation. Here, we developed a transgenic mouse model (NRG1-IV/NSE-tTA) in which human NRG1-IV is selectively overexpressed in a neuronal specific manner. Using a combination of molecular, biochemical, electrophysiological, and behavioral analyses, we demonstrate that NRG1-IV/NSE-tTA mice exhibit abnormal behaviors relevant to schizophrenia, including impaired sensorimotor gating, discrimination memory, and social behaviors. These neurobehavioral phenotypes are accompanied by increases in cortical expression of the NRG1 receptor, ErbB4 and the downstream signaling target, PIK3-p110δ, along with disrupted dendritic development, synaptic pathology, and altered prefrontal cortical excitatory-inhibitory balance. Pharmacological inhibition of p110δ reversed sensorimotor gating and cognitive deficits. These data demonstrate a novel role for NRG1-IV in learning, memory, and neural circuit formation and a potential neurobiological mechanism for schizophrenia risk; show that deficits are pharmacologically reversible in adulthood; and further highlight p110δ as a target for antipsychotic drug development. SIGNIFICANCE STATEMENT Schizophrenia is a disabling psychiatric disorder with neurodevelopmental origins. Genes that increase risk for schizophrenia have been identified. Understanding how these genes affect brain development and function is necessary. This work is the first report of a newly generated humanized transgenic mouse model engineered to express human NRG1-IV, an isoform of the NRG1 (Neuregulin 1) gene that is increased in the brains of patients with schizophrenia in association with genetic risk. Using behavioral neuroscience, molecular biology, electrophysiology, and pharmacology, we identify a role for NRG1-IV in learning, memory, and cognition and determine that this relates to brain excitatory-inhibitory balance and changes in ErbB4/PI3K/AKT signaling. Moreover, the study further highlights the potential of targeting the PI3K pathway for the treatment of schizophrenia.
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Feng Y, Cheng D, Zhang C, Li Y, Zhang Z, Wang J, Feng X. Association between ErbB4 single nucleotide polymorphisms and susceptibility to schizophrenia: A meta-analysis of case-control studies. Medicine (Baltimore) 2017; 96:e5920. [PMID: 28225484 PMCID: PMC5569411 DOI: 10.1097/md.0000000000005920] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Accumulating studies have reported inconsistent association between ErbB4 single nucleotide polymorphisms (SNPs) and predisposition to schizophrenia. To better interpret this issue, here we conducted a meta-analysis using published case-control studies. METHODS We conducted a systematic search of MEDLINE (Pubmed), Embase (Ovid), Web of Science (Thomson-Reuters) to identify relevant references. The association between ErbB4 SNPs and schizophrenia was assessed by odds ratios (ORs) and 95% confidence intervals (CIs). Between-study heterogeneity was evaluated by I squared (I) statistics and Cochran's Q test. To appraise the stability of results, we employed sensitivity analysis by omitting 1 single study each time. To assess the potential publication bias, we conducted trim and fill analysis. RESULTS Seven studies published in English comprising 3162 cases and 4264 controls were included in this meta-analysis. Meta-analyses showed that rs707284 is statistically significantly associated with schizophrenia susceptibility among Asian and Caucasian populations under the allelic model (OR = 0.91, 95% CI: 0.83-0.99, P = 0.035). Additionally, a marginal association (P < 0.1) was observed between rs707284 and schizophrenia risk among Asian and Caucasian populations under the recessive (OR = 0.85, 95% CI: 0.72-1.01, P = 0.065) and homozygous (OR = 0.84, 95% CI: 0.68-1.03, P = 0.094) models. In the Asian subgroup, rs707284 was also noted to be marginally associated with schizophrenia under the recessive model (OR = 0.84, 95% CI: 0.70-1.00, P = 0.053). However, no statistically significant association was found between rs839523, rs7598440, rs3748962, and rs2371276 and schizophrenia risk. CONCLUSION This meta-analysis suggested that rs707284 may be a potential ErbB4 SNP associated with susceptibility to schizophrenia. Nevertheless, due to the limited sample size in this meta-analysis, more large-scale association studies are still needed to confirm the results.
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Affiliation(s)
- Yanguo Feng
- Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang
| | - Dejun Cheng
- Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang
| | - Chaofeng Zhang
- Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang
| | - Yuchun Li
- Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang
| | - Zhiying Zhang
- Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang
| | - Juan Wang
- Department of Psychiatry, Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang
| | - Xiao Feng
- School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Potential synergistic action of 19 schizophrenia risk genes in the thalamus. Schizophr Res 2017; 180:64-69. [PMID: 27645107 PMCID: PMC5263182 DOI: 10.1016/j.schres.2016.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 08/31/2016] [Accepted: 09/03/2016] [Indexed: 11/22/2022]
Abstract
A goal of current schizophrenia (SZ) research is to understand how multiple risk genes work together with environmental factors to produce the disease. In schizophrenia, there is elevated delta frequency EEG power in the awake state, an elevation that can be mimicked in rodents by N-methyl-d-aspartate receptor (NMDAR) antagonist action in the thalamus. This thalamic delta can be blocked by dopamine D2 receptor antagonists, agents known to be therapeutic in SZ. Experiments suggest that these oscillations can interfere with brain function and may thus be causal in producing psychosis. Here we evaluate the question of whether well-established schizophrenia risk genes may interact to affect the delta generation process. We identify 19 risk genes that can plausibly work in a synergistic fashion to generate delta oscillations.
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Murphy E, Benítez-Burraco A. Bridging the Gap between Genes and Language Deficits in Schizophrenia: An Oscillopathic Approach. Front Hum Neurosci 2016; 10:422. [PMID: 27601987 PMCID: PMC4993770 DOI: 10.3389/fnhum.2016.00422] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 08/08/2016] [Indexed: 12/11/2022] Open
Abstract
Schizophrenia is characterized by marked language deficits, but it is not clear how these deficits arise from the alteration of genes related to the disease. The goal of this paper is to aid the bridging of the gap between genes and schizophrenia and, ultimately, give support to the view that the abnormal presentation of language in this condition is heavily rooted in the evolutionary processes that brought about modern language. To that end we will focus on how the schizophrenic brain processes language and, particularly, on its distinctive oscillatory profile during language processing. Additionally, we will show that candidate genes for schizophrenia are overrepresented among the set of genes that are believed to be important for the evolution of the human faculty of language. These genes crucially include (and are related to) genes involved in brain rhythmicity. We will claim that this translational effort and the links we uncover may help develop an understanding of language evolution, along with the etiology of schizophrenia, its clinical/linguistic profile, and its high prevalence among modern populations.
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Affiliation(s)
- Elliot Murphy
- Division of Psychology and Language Sciences, University College London London, UK
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24
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Engel M, Snikeris P, Matosin N, Newell KA, Huang XF, Frank E. mGluR2/3 agonist LY379268 rescues NMDA and GABAA receptor level deficits induced in a two-hit mouse model of schizophrenia. Psychopharmacology (Berl) 2016; 233:1349-59. [PMID: 26861891 DOI: 10.1007/s00213-016-4230-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Accepted: 01/29/2016] [Indexed: 10/22/2022]
Abstract
RATIONALE An imbalance of excitatory and inhibitory neurotransmission underlies the glutamate hypothesis of schizophrenia. Agonists of group II metabotropic glutamate receptors, mGluR2/3, have been proposed as novel therapeutic agents to correct this imbalance. However, the influence of mGluR2/3 activity on excitatory and inhibitory neurotransmitter receptors has not been explored. OBJECTIVES We aimed to investigate the ability of a novel mGluR2/3 agonist, LY379268, to modulate the availability of the excitatory N-methyl-D-aspartate receptor (NMDA-R) and the inhibitory gamma-aminobutyrate-A receptor (GABAA-R), in a two-hit mouse model of schizophrenia. METHODS Wild type (WT) and heterozygous neuregulin 1 transmembrane domain mutant mice (NRG1 HET) were treated daily with phencyclidine (10 mg/kg ip) or saline for 14 days. After a 14-day washout, an acute dose of the mGluR2/3 agonist LY379268 (3 mg/kg), olanzapine (antipsychotic drug comparison, 1.5 mg/kg), or saline was administered. NMDA-R and GABAA-R binding densities were examined by receptor autoradiography in several schizophrenia-relevant brain regions. RESULTS In both WT and NRG1 HET mice, phencyclidine treatment significantly reduced NMDA-R and GABAA-R binding density in the prefrontal cortex, hippocampus, and nucleus accumbens. Acute treatment with LY379268 restored NMDA-R and GABAA-R levels in the two-hit mouse model comparable to olanzapine. CONCLUSIONS We demonstrate that the mGluR2/3 agonist LY379268 restores excitatory and inhibitory deficits with similar efficiency as olanzapine in our two-hit schizophrenia mouse model. This study significantly contributes to our understanding of the mechanisms underlying the therapeutic effects of LY379268 and supports the use of agents aimed at mGluR2/3.
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Affiliation(s)
- Martin Engel
- Schizophrenia Research Institute, Sydney, Australia. .,Faculty of Science Medicine and Health, University of Wollongong, Wollongong, Australia. .,Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, Australia. .,School of Biological Sciences, University of Wollongong, Wollongong, Australia.
| | - Peta Snikeris
- Schizophrenia Research Institute, Sydney, Australia.,Faculty of Science Medicine and Health, University of Wollongong, Wollongong, Australia.,Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, Australia
| | - Natalie Matosin
- Schizophrenia Research Institute, Sydney, Australia.,Faculty of Science Medicine and Health, University of Wollongong, Wollongong, Australia.,Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, Australia
| | - Kelly Anne Newell
- Schizophrenia Research Institute, Sydney, Australia.,Faculty of Science Medicine and Health, University of Wollongong, Wollongong, Australia.,Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, Australia
| | - Xu-Feng Huang
- Schizophrenia Research Institute, Sydney, Australia.,Faculty of Science Medicine and Health, University of Wollongong, Wollongong, Australia.,Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, Australia
| | - Elisabeth Frank
- Schizophrenia Research Institute, Sydney, Australia.,Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, Australia
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Douet V, Chang L, Lee K, Ernst T. ERBB4 polymorphism and family history of psychiatric disorders on age-related cortical changes in healthy children. Brain Imaging Behav 2016; 9:128-40. [PMID: 25744101 DOI: 10.1007/s11682-015-9363-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Genetic variations in ERBB4 were associated with increased susceptibility for schizophrenia (SCZ) and bipolar disorders (BPD). Structural imaging studies showed cortical abnormalities in adolescents and adults with SCZ or BPD. However, less is known about subclinical cortical changes or the influence of ERBB4 on cortical development. 971 healthy children (ages 3-20 years old; 462 girls and 509 boys) were genotyped for the ERBB4-rs7598440 variants, had structural MRI, and cognitive evaluation (NIH Toolbox ®). We investigated the effects of ERBB4 variants and family history of SCZ and/or BPD (FH) on cortical measures and cognitive performances across ages 3-20 years using a general additive model. Variations in ERBB4 and FH impact differentially the age-related cortical changes in regions often affected by SCZ and BPD. The ERBB4-TT-risk genotype children with no FH had subtle cortical changes across the age span, primarily located in the left temporal lobe and superior parietal cortex. In contrast, the TT-risk genotype children with FH had more pronounced age-related changes, mainly in the frontal lobes compared to the non-risk genotype children. Interactive effects of age, FH and ERBB4 variations were also found on episodic memory and working memory, which are often impaired in SCZ and BPD. Healthy children carrying the risk-genotype in ERBB4 and/or with FH had cortical measures resembling those reported in SCZ or BPD. These subclinical cortical variations may provide early indicators for increased risk of psychiatric disorders and improve our understanding of the effect of the NRG1-ERBB4 pathway on brain development.
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Affiliation(s)
- Vanessa Douet
- Department of Medicine, John A. Burns School of Medicine, University of Hawaii and The Queen's Medical Center, 1356 Lusitana Street, UH Tower, Room 716, Honolulu, HI, 96813, USA,
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26
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Cohen SM, Tsien RW, Goff DC, Halassa MM. The impact of NMDA receptor hypofunction on GABAergic neurons in the pathophysiology of schizophrenia. Schizophr Res 2015; 167:98-107. [PMID: 25583246 PMCID: PMC4724170 DOI: 10.1016/j.schres.2014.12.026] [Citation(s) in RCA: 173] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 11/25/2014] [Accepted: 12/18/2014] [Indexed: 02/07/2023]
Abstract
While the dopamine hypothesis has dominated schizophrenia research for several decades, more recent studies have highlighted the role of fast synaptic transmitters and their receptors in schizophrenia etiology. Here we review evidence that schizophrenia is associated with a reduction in N-methyl-d-aspartate receptor (NMDAR) function. By highlighting postmortem, neuroimaging and electrophysiological studies, we provide evidence for preferential disruption of GABAergic circuits in the context of NMDAR hypo-activity states. The functional relationship between NMDARs and GABAergic neurons is realized at the molecular, cellular, microcircuit and systems levels. A synthesis of findings across these levels explains how NMDA-mediated inhibitory dysfunction may lead to aberrant interactions among brain regions, accounting for key clinical features of schizophrenia. This synthesis of schizophrenia unifies observations from diverse fields and may help chart pathways for developing novel diagnostics and therapeutics.
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Affiliation(s)
- Samuel M. Cohen
- NYU Neuroscience Institute and Department of Neuroscience and Physiology, NYU Langone Medical Center, New York, NY 10016, USA
| | - Richard W. Tsien
- NYU Neuroscience Institute and Department of Neuroscience and Physiology, NYU Langone Medical Center, New York, NY 10016, USA
| | - Donald C. Goff
- Department of Psychiatry, NYU Langone Medical Center, 550 First Avenue, New York City, NY 10016, USA
,Nathan Kline Institute for Psychiatric Research, 140 Old Orangeburg Road, Orangeburg, NY 10962, USA
| | - Michael M. Halassa
- NYU Neuroscience Institute and Department of Neuroscience and Physiology, NYU Langone Medical Center, New York, NY 10016, USA
,Department of Psychiatry, NYU Langone Medical Center, 550 First Avenue, New York City, NY 10016, USA
,To whom correspondence should be addressed:
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27
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Banerjee A, Wang HY, Borgmann-Winter KE, MacDonald ML, Kaprielian H, Stucky A, Kvasic J, Egbujo C, Ray R, Talbot K, Hemby SE, Siegel SJ, Arnold SE, Sleiman P, Chang X, Hakonarson H, Gur RE, Hahn CG. Src kinase as a mediator of convergent molecular abnormalities leading to NMDAR hypoactivity in schizophrenia. Mol Psychiatry 2015; 20:1091-100. [PMID: 25330739 PMCID: PMC5156326 DOI: 10.1038/mp.2014.115] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 08/19/2014] [Accepted: 08/21/2014] [Indexed: 01/28/2023]
Abstract
Numerous investigations support decreased glutamatergic signaling as a pathogenic mechanism of schizophrenia, yet the molecular underpinnings for such dysregulation are largely unknown. In the post-mortem dorsolateral prefrontal cortex (DLPFC), we found striking decreases in tyrosine phosphorylation of N-methyl-D aspartate (NMDA) receptor subunit 2 (GluN2) that is critical for neuroplasticity. The decreased GluN2 activity in schizophrenia may not be because of downregulation of NMDA receptors as MK-801 binding and NMDA receptor complexes in postsynaptic density (PSD) were in fact increased in schizophrenia cases. At the postreceptor level, however, we found striking reductions in the protein kinase C, Pyk 2 and Src kinase activity that in tandem can decrease GluN2 activation. Given that Src serves as a hub of various signaling mechanisms affecting GluN2 phosphorylation, we postulated that Src hypoactivity may result from convergent alterations of various schizophrenia susceptibility pathways and thus mediate their effects on NMDA receptor signaling. Indeed, the DLPFC of schizophrenia cases exhibit increased PSD-95 and erbB4 and decreased receptor-type tyrosine-protein phosphatase-α (RPTPα) and dysbindin-1, each of which reduces Src activity via protein interaction with Src. To test genomic underpinnings for Src hypoactivity, we examined genome-wide association study results, incorporating 13 394 cases and 34 676 controls. We found no significant association of individual variants of Src and its direct regulators with schizophrenia. However, a protein-protein interaction-based network centered on Src showed significant enrichment of gene-level associations with schizophrenia compared with other psychiatric illnesses. Our results together demonstrate striking decreases in NMDA receptor signaling at the postreceptor level and propose Src as a nodal point of convergent dysregulations affecting NMDA receptor pathway via protein-protein associations.
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Affiliation(s)
- Anamika Banerjee
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
| | - Hoau-Yan Wang
- Department of Physiology, Pharmacology and Neuroscience, City University of New York Medical School, New York, NY 10031
| | | | - Mathew L. MacDonald
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
| | - Hagop Kaprielian
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
| | - Andres Stucky
- Department of Physiology, Pharmacology and Neuroscience, City University of New York Medical School, New York, NY 10031
| | - Jessica Kvasic
- Department of Physiology, Pharmacology and Neuroscience, City University of New York Medical School, New York, NY 10031
| | - Chijioke Egbujo
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
| | - Rabindranath Ray
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
| | - Konrad Talbot
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
| | - Scott E Hemby
- Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, NC 27106
| | - Steven J. Siegel
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
| | - Steven E. Arnold
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
| | - Patrick Sleiman
- The Center for Applied Genomics, The Children’s Hospital of Philadelphia, and Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, PA, 19104
| | - Xiao Chang
- The Center for Applied Genomics, The Children’s Hospital of Philadelphia, and Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, PA, 19104
| | - Hakon Hakonarson
- The Center for Applied Genomics, The Children’s Hospital of Philadelphia, and Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, PA, 19104
| | - Raquel E. Gur
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
| | - Chang-Gyu Hahn
- Department of Psychiatry, University of Pennsylvania, Philadelphia, PA 19104-3403
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Wang C, Aleksic B, Ozaki N. Glia-related genes and their contribution to schizophrenia. Psychiatry Clin Neurosci 2015; 69:448-61. [PMID: 25759284 DOI: 10.1111/pcn.12290] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/08/2015] [Indexed: 12/24/2022]
Abstract
Schizophrenia, a debilitating disease with 1% prevalence in the general population, is characterized by major neuropsychiatric symptoms, including delusions, hallucinations, and deficits in emotional and social behavior. Previous studies have directed their investigations on the mechanism of schizophrenia towards neuronal dysfunction and have defined schizophrenia as a 'neuron-centric' disorder. However, along with the development of genetics and systematic biology approaches in recent years, the crucial role of glial cells in the brain has also been shown to contribute to the etiopathology of schizophrenia. Here, we summarize comprehensive data that support the involvement of glial cells (including oligodendrocytes, astrocytes, and microglial cells) in schizophrenia and list several acknowledged glia-related genes or molecules associated with schizophrenia. Instead of purely an abnormality of neurons in schizophrenia, an additional 'glial perspective' provides us a novel and promising insight into the causal mechanisms and treatment for this disease.
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Affiliation(s)
- Chenyao Wang
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Branko Aleksic
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Norio Ozaki
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Baik I, Seo HS, Yoon D, Kim SH, Shin C. Associations of Sleep Apnea, NRG1 Polymorphisms, Alcohol Consumption, and Cerebral White Matter Hyperintensities: Analysis with Genome-Wide Association Data. Sleep 2015; 38:1137-43. [PMID: 25325441 DOI: 10.5665/sleep.4830] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 07/25/2014] [Indexed: 12/27/2022] Open
Abstract
STUDY OBJECTIVE There are few studies on gene-environment interactions with obstructive sleep apnea (OSA). Our study aimed to explore genetic polymorphisms associated with OSA using genome-wide association (GWA) data and evaluate the effects of relevant polymorphisms on the association between risk factors, including obesity and alcohol consumption, and OSA. We also investigated on these associations in relation to cerebral white matter hyperintensities (WMH) on magnetic resonance images. DESIGN A cross-sectional design. SETTING A polysomnography study embedded in a population-based cohort from the Korean Genome Epidemiology Study was conducted in 2011-2013. PARTICIPANTS 1,763 participants aged 48-78 years. RESULTS 251 individuals were identified to have OSA with an apnea-hypopnea index ≥ 15. A common polymorphism of neuregulin-1 gene (NRG1), rs10097555, was selected as the most suggestive locus associated with OSA (P value < 10(-5)) based on the results of GWA analysis in a matched case-control subsample (n = 470). Among 1,763 participants, we found that the presence of the NRG1 polymorphism is inversely associated with OSA (P value < 0.01) even after taking into account potential risk factors; the multivariate odds ratio (95% confidence interval) for the mutant alleles was 0.57 (0.39-0.82) compared with the wild-type. We observed that this association is modified by alcohol consumption (P < 0.05), not by obesity. We also observed that WMH are positively associated with OSA independent of the NRG1 polymorphism and alcohol consumption (P < 0.05). CONCLUSIONS These findings suggest that the neuregulin-1 gene (NRG1) may be involved in the etiological mechanisms of obstructive sleep apnea (OSA) and that carriers of a particular NRG1 mutation may be less likely to have OSA if they do not drink alcoholic beverages.
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Affiliation(s)
- Inkyung Baik
- Department of Foods and Nutrition, College of Natural Sciences, Kookmin University, Seoul, Republic of Korea
| | - Hyung Suk Seo
- Department of Radiology, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Daewui Yoon
- Institute of Human Genomic Study, Korea University Ansan Hospital, Ansan, Republic of Korea
| | - Seong Hwan Kim
- Division of Cardiology, Department of Internal Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
| | - Chol Shin
- Institute of Human Genomic Study, Korea University Ansan Hospital, Ansan, Republic of Korea.,Division of Pulmonary, Sleep and Critical Care Medicine, Department of Internal Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Republic of Korea
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30
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Crisafulli C, Drago A, Calabrò M, Spina E, Serretti A. A molecular pathway analysis informs the genetic background at risk for schizophrenia. Prog Neuropsychopharmacol Biol Psychiatry 2015; 59:21-30. [PMID: 25554435 DOI: 10.1016/j.pnpbp.2014.12.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 12/22/2014] [Accepted: 12/23/2014] [Indexed: 01/01/2023]
Abstract
BACKGROUND Schizophrenia is a complex mental disorder marked by severely impaired thinking, delusional thoughts, hallucinations and poor emotional responsiveness. The biological mechanisms that lead to schizophrenia may be related to the genetic background of patients. Thus, a genetic perspective may help to unravel the molecular pathways disrupted in schizophrenia. METHODS In the present work, we used a molecular pathway analysis to identify the molecular pathways associated with schizophrenia. We collected data of genetic loci previously associated with schizophrenia, identified the genes located in those positions and created the metabolic pathways that are related to those genes' products. These pathways were tested for enrichment (a number of SNPs associated with the phenotype significantly higher than expected by chance) in a sample of schizophrenic patients and controls (4486 and 4477, respectively). RESULTS The molecular pathway that resulted from the identification of all the genes located in the loci previously found to be associated with schizophrenia was found to be enriched, as expected (permutated p(10(6))=9.9999e-06).We found 60 SNPs amongst 30 different genes with a strong association with schizophrenia. The genes are related to the pathways related to neurodevelopment, apoptosis, vesicle traffic, immune response and MAPK cascade. CONCLUSIONS The pathway related to the toll-like receptor family seemed to play a central role in the modulation/connection of various pathways whose disruption leads to schizophrenia. This pathway is related to the innate immune system, further stressing the role of immunological-related events in increasing the risk to schizophrenia.
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Affiliation(s)
- Concetta Crisafulli
- Department of Biomedical Science and Morphological and Functional Images, University of Messina, Messina, Italy
| | - Antonio Drago
- Department of Biomedical and Neuromotor Sciences - DIBINEM, University of Bologna, Bologna, Italy; I.R.C.C.S. "San Giovanni di Dio", Fatebenefratelli, Brescia, Italy.
| | - Marco Calabrò
- Department of Biomedical Science and Morphological and Functional Images, University of Messina, Messina, Italy; Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy; IRCCS Centro Neurolesi "Bonino-Pulejo", Messina, Italy
| | - Edoardo Spina
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Alessandro Serretti
- Department of Biomedical and Neuromotor Sciences - DIBINEM, University of Bologna, Bologna, Italy
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31
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Muraki K, Tanigaki K. Neuronal migration abnormalities and its possible implications for schizophrenia. Front Neurosci 2015; 9:74. [PMID: 25805966 PMCID: PMC4354421 DOI: 10.3389/fnins.2015.00074] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 02/20/2015] [Indexed: 02/01/2023] Open
Abstract
Schizophrenia is a complex mental disorder that displays behavioral deficits such as decreased sensory gating, reduced social interaction and working memory deficits. The neurodevelopmental model is one of the widely accepted hypotheses of the etiology of schizophrenia. Subtle developmental abnormalities of the brain which stated long before the onset of clinical symptoms are thought to lead to the emergence of illness. Schizophrenia has strong genetic components but its underlying molecular pathogenesis is still poorly understood. Genetic linkage and association studies have identified several genes involved in neuronal migrations as candidate susceptibility genes for schizophrenia, although their effect size is small. Recent progress in copy number variation studies also has identified much higher risk loci such as 22q11. Based on these genetic findings, we are now able to utilize genetically-defined animal models. Here we summarize the results of neurodevelopmental and behavioral analysis of genetically-defined animal models. Furthermore, animal model experiments have demonstrated that embryonic and perinatal neurodevelopmental insults in neurogenesis and neuronal migrations cause neuronal functional and behavioral deficits in affected adult animals, which are similar to those of schizophrenic patients. However, these findings do not establish causative relationship. Genetically-defined animal models are a critical approach to explore the relationship between neuronal migration abnormalities and behavioral abnormalities relevant to schizophrenia.
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Affiliation(s)
- Kazue Muraki
- Shiga Medical Center, Research Institute Moriyama, Shiga, Japan
| | - Kenji Tanigaki
- Shiga Medical Center, Research Institute Moriyama, Shiga, Japan
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Engel M, Snikeris P, Jenner A, Karl T, Huang XF, Frank E. Neuregulin 1 Prevents Phencyclidine-Induced Behavioral Impairments and Disruptions to GABAergic Signaling in Mice. Int J Neuropsychopharmacol 2015; 18:pyu114. [PMID: 26478928 PMCID: PMC4540095 DOI: 10.1093/ijnp/pyu114] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Substantial evidence from human post-mortem and genetic studies has linked the neurotrophic factor neuregulin 1 (NRG1) to the pathophysiology of schizophrenia. Genetic animal models and in vitro experiments have suggested that altered NRG1 signaling, rather than protein changes, contributes to the symptomatology of schizophrenia. However, little is known about the effect of NRG1 on schizophrenia-relevant behavior and neurotransmission (particularly GABAergic and glutamatergic) in adult animals. METHOD To address this question, we treated adult mice with the extracellular signaling domain of NRG1 and assessed spontaneous locomotor activity and acoustic startle response, as well as extracellular GABA, glutamate, and glycine levels in the prefrontal cortex and hippocampus via microdialysis. Furthermore, we asked whether the effect of NRG1 would differ under schizophrenia-relevant impairments in mice and therefore co-treated mice with NRG1 and phencyclidine (PCP) (3 mg/kg). RESULTS Acute intraventricularly- or systemically-injected NRG1 did not affect spontaneous behavior, but prevented PCP induced hyperlocomotion and deficits of prepulse inhibition. NRG1 retrodialysis (10 nM) reduced extracellular glutamate and glycine levels in the prefrontal cortex and hippocampus, and prevented PCP-induced increase in extracellular GABA levels in the hippocampus. CONCLUSION With these results, we provide the first compelling in vivo evidence for the involvement of NRG1 signaling in schizophrenia-relevant behavior and neurotransmission in the adult nervous system, which highlight its treatment potential. Furthermore, the ability of NRG1 treatment to alter GABA, glutamate, and glycine levels in the presence of PCP also suggests that NRG1 signaling has the potential to alter disrupted neurotransmission in patients with schizophrenia.
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Samsom JN, Wong AHC. Schizophrenia and Depression Co-Morbidity: What We have Learned from Animal Models. Front Psychiatry 2015; 6:13. [PMID: 25762938 PMCID: PMC4332163 DOI: 10.3389/fpsyt.2015.00013] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 01/24/2015] [Indexed: 12/15/2022] Open
Abstract
Patients with schizophrenia are at an increased risk for the development of depression. Overlap in the symptoms and genetic risk factors between the two disorders suggests a common etiological mechanism may underlie the presentation of comorbid depression in schizophrenia. Understanding these shared mechanisms will be important in informing the development of new treatments. Rodent models are powerful tools for understanding gene function as it relates to behavior. Examining rodent models relevant to both schizophrenia and depression reveals a number of common mechanisms. Current models which demonstrate endophenotypes of both schizophrenia and depression are reviewed here, including models of CUB and SUSHI multiple domains 1, PDZ and LIM domain 5, glutamate Delta 1 receptor, diabetic db/db mice, neuropeptide Y, disrupted in schizophrenia 1, and its interacting partners, reelin, maternal immune activation, and social isolation. Neurotransmission, brain connectivity, the immune system, the environment, and metabolism emerge as potential common mechanisms linking these models and potentially explaining comorbid depression in schizophrenia.
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Affiliation(s)
- James N Samsom
- Department of Molecular Neuroscience, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute , Toronto, ON , Canada ; Department of Pharmacology, Faculty of Medicine, University of Toronto , Toronto, ON , Canada
| | - Albert H C Wong
- Department of Molecular Neuroscience, Centre for Addiction and Mental Health, Campbell Family Mental Health Research Institute , Toronto, ON , Canada ; Department of Pharmacology, Faculty of Medicine, University of Toronto , Toronto, ON , Canada ; Department of Psychiatry, Faculty of Medicine, University of Toronto , Toronto, ON , Canada
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Greenberg Z, Centre for Cancer Biology, University of South Australia, Frome Road, Adelaide, 5000, Australia, Ramshaw H, Schwarz Q. Time Windows of Interneuron Development: Implications to Our Understanding of the Aetiology and Treatment of Schizophrenia. AIMS Neurosci 2015. [DOI: 10.3934/neuroscience.2015.4.294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Barz CS, Bessaih T, Abel T, Feldmeyer D, Contreras D. Sensory encoding in Neuregulin 1 mutants. Brain Struct Funct 2014; 221:1067-81. [PMID: 25515311 DOI: 10.1007/s00429-014-0955-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 12/02/2014] [Indexed: 10/24/2022]
Abstract
Schizophrenic patients show altered sensory perception as well as changes in electrical and magnetic brain responses to sustained, frequency-modulated sensory stimulation. Both the amplitude and temporal precision of the neural responses differ in patients as compared to control subjects, and these changes are most pronounced for stimulation at gamma frequencies (20-40 Hz). In addition, patients display enhanced spontaneous gamma oscillations, which has been interpreted as 'neural noise' that may interfere with normal stimulus processing. To investigate electrophysiological markers of aberrant sensory processing in a model of schizophrenia, we recorded neuronal activity in primary somatosensory cortex of mice heterozygous for the schizophrenia susceptibility gene Neuregulin 1. Sensory responses to sustained 20-70 Hz whisker stimulation were analyzed with respect to firing rates, spike precision (phase locking) and gamma oscillations, and compared to baseline conditions. The mutants displayed elevated spontaneous firing rates, a reduced gain in sensory-evoked spiking and gamma activity, and reduced spike precision of 20-40 Hz responses. These findings present the first in vivo evidence of the linkage between a genetic marker and altered stimulus encoding, thus suggesting a novel electrophysiological endophenotype of schizophrenia.
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Affiliation(s)
- Claudia S Barz
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical School, RWTH Aachen University, Aachen, Germany. .,Department of Neuropathology, Medical School, RWTH Aachen University, Aachen, Germany. .,Department of Ophthalmology, Medical School, RWTH Aachen University, Aachen, Germany. .,IZKF Aachen, Medical School, RWTH Aachen University, Aachen, Germany.
| | - Thomas Bessaih
- Sorbonne Universités, UPMC Univ Paris 06, UM 119, Neuroscience Paris Seine (NPS), Paris, 75005, France.,CNRS, UMR 8246, NPS, Paris, 75005, France.,INSERM, U1130, NPS, Paris, 75005, France
| | - Ted Abel
- Department of Biology, University of Pennsylvania, Philadelphia, USA.,Smilow Center for Translational Research, Philadelphia, USA
| | - Dirk Feldmeyer
- Department of Psychiatry, Psychotherapy and Psychosomatics, Medical School, RWTH Aachen University, Aachen, Germany.,Jülich Aachen Research Alliance (JARA) - Translational Brain Medicine, Aachen, Germany
| | - Diego Contreras
- Department of Neuroscience, School of Medicine, University of Pennsylvania, Philadelphia, USA
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Mei L, Nave KA. Neuregulin-ERBB signaling in the nervous system and neuropsychiatric diseases. Neuron 2014; 83:27-49. [PMID: 24991953 DOI: 10.1016/j.neuron.2014.06.007] [Citation(s) in RCA: 436] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Neuregulins (NRGs) comprise a large family of growth factors that stimulate ERBB receptor tyrosine kinases. NRGs and their receptors, ERBBs, have been identified as susceptibility genes for diseases such as schizophrenia (SZ) and bipolar disorder. Recent studies have revealed complex Nrg/Erbb signaling networks that regulate the assembly of neural circuitry, myelination, neurotransmission, and synaptic plasticity. Evidence indicates there is an optimal level of NRG/ERBB signaling in the brain and deviation from it impairs brain functions. NRGs/ERBBs and downstream signaling pathways may provide therapeutic targets for specific neuropsychiatric symptoms.
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Affiliation(s)
- Lin Mei
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, USA; Department of Neurology, Medical College of Georgia, Georgia Regents University, Augusta, GA 30912, USA; Charlie Norwood VA Medical Center, Augusta, GA 30904, USA.
| | - Klaus-Armin Nave
- Department of Neurogenetics, Max Planck Institute of Experimental Medicine, 37075 Goettingen, Germany.
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Paterson C, Wang Y, Kleinman JE, Law AJ. Effects of schizophrenia risk variation in the NRG1 gene on NRG1-IV splicing during fetal and early postnatal human neocortical development. Am J Psychiatry 2014; 171:979-89. [PMID: 24935406 PMCID: PMC4330971 DOI: 10.1176/appi.ajp.2014.13111518] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
OBJECTIVE Neuregulin 1 (NRG1) is a multifunctional neurotrophin that mediates neurodevelopment and schizophrenia risk. The NRG1 gene undergoes extensive alternative splicing, and association of brain NRG1 type IV isoform expression with the schizophrenia-risk polymorphism rs6994992 is a potential mechanism of risk. Novel splice variants of NRG1-IV (NRG1-IVNV), with predicted unique signaling capabilities, have been cloned in fetal brain tissue. The authors investigated the temporal dynamics of transcription of NRG1-IVNV, compared with the major NRG1 isoforms, across human prenatal and postnatal prefrontal cortical development, and they examined the association of rs6994992 with NRG1-IVNV expression. METHOD NRG1 type I-IV and NRG1-IVNV isoforms were evaluated with quantitative real-time polymerase chain reaction in human postmortem prefrontal cortex tissue samples at 14 to 39 weeks gestation and postnatal ages 0-83 years. The association of rs6994992 genotype with NRG1-IVNV expression and the subcellular distribution and proteolytic processing of NRG1-IVNV isoforms were also determined. RESULTS Expression of NRG1 types I, II, and III was temporally regulated during prenatal and postnatal neocortical development. NRG1-IVNV was expressed from 16 weeks gestation until age 3. Homozygosity for the schizophrenia risk allele (T) of rs6994992 conferred lower cortical NRG1-IVNV levels. Assays showed that NRG1-IVNV is a novel nuclear-enriched, truncated NRG1 protein resistant to proteolytic processing. CONCLUSIONS To the authors' knowledge, this study provides the first quantitative map of NRG1 isoform expression during human neocortical development and aging. It identifies a potential mechanism of early developmental risk for schizophrenia at the NRG1 locus, involving a novel class of NRG1 proteins.
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Affiliation(s)
- Clare Paterson
- Department of Psychiatry, University of Colorado, School of Medicine, Aurora, CO 80045, USA,Clinical Brain Disorders Branch, Genes, Cognition and Psychosis Program, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892-1385, USA
| | - Yanhong Wang
- Clinical Brain Disorders Branch, Genes, Cognition and Psychosis Program, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892-1385, USA,Lieber Institute for Brain Development, Johns Hopkins University Medical Campus, 855 N Wolfe Street, Baltimore, Maryland 21205
| | - Joel E. Kleinman
- Clinical Brain Disorders Branch, Genes, Cognition and Psychosis Program, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892-1385, USA,Lieber Institute for Brain Development, Johns Hopkins University Medical Campus, 855 N Wolfe Street, Baltimore, Maryland 21205
| | - Amanda J. Law
- Department of Psychiatry, University of Colorado, School of Medicine, Aurora, CO 80045, USA,Clinical Brain Disorders Branch, Genes, Cognition and Psychosis Program, Intramural Research Program, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892-1385, USA,Corresponding author:
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Thirunavukkarasu P, Vijayakumari AA, John JP, Halahalli HN, Paul P, Sen S, Purushottam M, Jain S. An exploratory association study of the influence of dysbindin and neuregulin polymorphisms on brain morphometry in patients with schizophrenia and healthy subjects from South India. Asian J Psychiatr 2014; 10:62-8. [PMID: 25042954 DOI: 10.1016/j.ajp.2014.04.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 04/09/2014] [Accepted: 04/13/2014] [Indexed: 01/20/2023]
Abstract
Multiple genetic risk variants may act in a convergent manner leading on to the pathophysiological alterations of brain structure and function in schizophrenia. We examined the effect of polymorphisms of two candidate genes that mediate glutamatergic signaling, viz., dysbindin (rs1011313) and neuregulin (rs35753505), on brain morphometry in patients with schizophrenia (N=38) and healthy subjects (N=37) from South India. Patients with schizophrenia showed trend-level (p<0.001 uncorrected, 20 voxel extent correction) volumetric reductions in multiple brain regions when compared to healthy control subjects. Trend-level volumetric differences were also noted between homozygotes of the risk allele (AA) of the neuregulin (NRG1) polymorphism and heterozygotes (AG), as well as homozygotes of the risk allele (CC) of the dysbindin (DTNBP1) polymorphism and heterozygotes (TC), irrespective of diagnosis. Moreover, an additive effect of the risk alleles on brain morphometry was also noted. These preliminary findings highlight the possible influence of polymorphisms of risk genes on brain morphometry in schizophrenia.
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Affiliation(s)
- Priyadarshini Thirunavukkarasu
- Multimodal Brain Image Analysis Laboratory (MBIAL), NIMHANS, Bangalore 560029, India; Department of Psychiatry, NIMHANS, Bangalore 560029, India.
| | - Anupa A Vijayakumari
- Multimodal Brain Image Analysis Laboratory (MBIAL), NIMHANS, Bangalore 560029, India; Department of Psychiatry, NIMHANS, Bangalore 560029, India.
| | - John P John
- Multimodal Brain Image Analysis Laboratory (MBIAL), NIMHANS, Bangalore 560029, India; Department of Psychiatry, NIMHANS, Bangalore 560029, India; Department of Clinical Neuroscience, NIMHANS, Bangalore 560029, India.
| | - Harsha N Halahalli
- Multimodal Brain Image Analysis Laboratory (MBIAL), NIMHANS, Bangalore 560029, India; Department of Neurophysiology, NIMHANS, Bangalore 560029, India.
| | - Pradip Paul
- Department of Psychiatry, NIMHANS, Bangalore 560029, India; Molecular Genetics Laboratory, NIMHANS, Bangalore 560029, India.
| | - Somdatta Sen
- Department of Psychiatry, NIMHANS, Bangalore 560029, India; Molecular Genetics Laboratory, NIMHANS, Bangalore 560029, India.
| | - Meera Purushottam
- Department of Psychiatry, NIMHANS, Bangalore 560029, India; Molecular Genetics Laboratory, NIMHANS, Bangalore 560029, India.
| | - Sanjeev Jain
- Department of Psychiatry, NIMHANS, Bangalore 560029, India; Molecular Genetics Laboratory, NIMHANS, Bangalore 560029, India.
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Pei JC, Liu CM, Lai WS. Distinct phenotypes of new transmembrane-domain neuregulin 1 mutant mice and the rescue effects of valproate on the observed schizophrenia-related cognitive deficits. Front Behav Neurosci 2014; 8:126. [PMID: 24782733 PMCID: PMC3995064 DOI: 10.3389/fnbeh.2014.00126] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 03/26/2014] [Indexed: 11/13/2022] Open
Abstract
Accumulating evidence suggests that neuregulin 1 (NRG1) might be involved in the neurodevelopment, neural plasticity, GABAergic neurotransmission, and pathogenesis of schizophrenia. NRG1 is abundantly expressed in the hippocampus, and emerging studies have begun to reveal the link between NRG1 signaling and cognitive deficits in schizophrenic patients. Because the transmembrane domain of NRG1 is vital for both forward and reverse signaling cascades, new Nrg1-deficient mice that carry a truncation of the transmembrane domain of the Nrg1 gene were characterized and used in this study to test a NRG1 loss-of-function hypothesis for schizophrenia. Both male and female Nrg1 heterozygous mutant mice and their wild-type littermates were used in a series of 4 experiments to characterize the impact of Nrg1 on behavioral phenotypes and to determine the importance of Nrg1 in the regulation of hippocampal neuromorphology and local GABAergic interneurons. First, a comprehensive battery of behavioral tasks indicated that male Nrg1-deficient mice exhibited significant impairments in cognitive functions. Second, pharmacological challenges were conducted and revealed that Nrg1 haploinsufficiency altered GABAergic activity in males. Third, although no genotype-specific neuromorphological alterations were found in the hippocampal CA1 pyramidal neurons, significant reductions in the hippocampal expressions of GAD67 and parvalbumin were revealed in the Nrg1-deficient males. Fourth, chronic treatment with valproate rescued the observed behavioral deficits and hippocampal GAD67 reduction in Nrg1-deficient males. Collectively, these results indicate the potential therapeutic effect of valproate and the importance of Nrg1 in the regulation of cognitive functions and hippocampal GABAergic interneurons, especially in males.
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Affiliation(s)
- Ju-Chun Pei
- Laboratory of Integrated Neuroscience and Ethology, Department of Psychology, National Taiwan University Taipei, Taiwan
| | - Chih-Min Liu
- Department of Psychiatry, National Taiwan University Hospital Taipei, Taiwan
| | - Wen-Sung Lai
- Laboratory of Integrated Neuroscience and Ethology, Department of Psychology, National Taiwan University Taipei, Taiwan ; Graduate Institute of Brain and Mind Sciences, National Taiwan University Taipei, Taiwan ; Neurobiology and Cognitive Science Center, National Taiwan University Taipei, Taiwan
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Roussos P, Haroutunian V. Schizophrenia: susceptibility genes and oligodendroglial and myelin related abnormalities. Front Cell Neurosci 2014; 8:5. [PMID: 24478629 PMCID: PMC3896818 DOI: 10.3389/fncel.2014.00005] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Accepted: 01/06/2014] [Indexed: 12/29/2022] Open
Abstract
Given that the genetic risk for schizophrenia is highly polygenic and the effect sizes, even for rare or de novo events, are modest at best, it has been suggested that multiple biological pathways are likely to be involved in the etiopathogenesis of the disease. Most efforts in understanding the cellular basis of schizophrenia have followed a “neuron-centric” approach, focusing on alterations in neurotransmitter systems and synapse cytoarchitecture. However, multiple lines of evidence coming from genetics and systems biology approaches suggest that apart from neurons, oligodendrocytes and potentially other glia are affected from schizophrenia risk loci. Neurobiological abnormalities linked with genetic association signal could identify abnormalities that are more likely to be primary, versus environmentally induced changes or downstream events. Here, we summarize genetic data that support the involvement of oligodendrocytes in schizophrenia, providing additional evidence for a causal role with the disease. Given the undeniable evidence of both neuronal and glial abnormalities in schizophrenia, we propose a neuro-glial model that invokes abnormalities at the node of Ranvier as a functional unit in the etiopathogenesis of the disease.
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Affiliation(s)
- Panos Roussos
- Mental Illness Research, Education, and Clinical Center (VISN 3), James J. Peters VA Medical Center Bronx, NY, USA ; Department of Psychiatry, Icahn School of Medicine at Mount Sinai New York, NY, USA ; Department of Genetics and Genomic Science and Institute for Multiscale Biology, Icahn School of Medicine at Mount Sinai New York, NY, USA
| | - Vahram Haroutunian
- Mental Illness Research, Education, and Clinical Center (VISN 3), James J. Peters VA Medical Center Bronx, NY, USA ; Department of Psychiatry, Icahn School of Medicine at Mount Sinai New York, NY, USA ; Department of Neuroscience, Icahn School of Medicine at Mount Sinai New York, NY, USA
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Kukshal P, Kodavali VC, Srivastava V, Wood J, McClain L, Bhatia T, Bhagwat AM, Deshpande SN, Nimgaonkar VL, Thelma BK. Dopaminergic gene polymorphisms and cognitive function in a north Indian schizophrenia cohort. J Psychiatr Res 2013; 47:1615-22. [PMID: 23932573 PMCID: PMC3831060 DOI: 10.1016/j.jpsychires.2013.07.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Revised: 05/10/2013] [Accepted: 07/05/2013] [Indexed: 12/13/2022]
Abstract
BACKGROUND Associations of polymorphisms from dopaminergic neurotransmitter pathway genes have mostly been reported in Caucasian ancestry schizophrenia (SZ) samples. As studies investigating single SNPs with SZ have been inconsistent, more detailed analyses utilizing multiple SNPs with the diagnostic phenotype as well as cognitive function may be more informative. Therefore, these analyses were conducted in a north Indian sample. METHODS Indian SZ case-parent trios (n = 601 families); unscreened controls (n = 468) and an independent set of 118 trio families were analyzed. Representative SNPs in the Dopamine D3 receptor (DRD3), dopamine transporter (SLC6A3), vesicular monoamine transporter 2 (SLC18A2), catechol-o-methyltransferase (COMT) and dopamine beta-hydroxylase (DBH) were genotyped using SNaPshot/SNPlex assays (n = 59 SNPs). The Trail Making Test (TMT) was administered to a subset of the sample (n = 260 cases and n = 302 parents). RESULTS Eight SNPs were nominally associated with SZ in either case-control or family based analyses (p < 0.05, rs7631540 and rs2046496 in DRD3; rs363399 and rs10082463 in SLC18A2; rs4680, rs4646315 and rs9332377 in COMT). rs6271 at DBH was associated in both analyses. Haplotypes of DRD3 SNPs incorporating rs7631540-rs2134655-rs3773678-rs324030-rs6280-rs905568 showed suggestive associations in both case-parent and trio samples. At SLC18A2, rs10082463 was nominally associated with psychomotor performance and rs363285 with executive functions using the TMT but did not withstand multiple corrections. CONCLUSIONS Suggestive associations with dopaminergic genes were detected in this study, but convincing links between dopaminergic polymorphisms and SZ or cognitive function were not observed.
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Affiliation(s)
- Prachi Kukshal
- Department of Genetics, University of Delhi South Campus, Benito Juarez Road, New Delhi 110 021, India; C. B. Patel Research Centre, Vile Parle (West), Mumbai, India.
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Buccheri MA, Spina S, Ruberto C, Lombardo T, Labie D, Ragusa AA. Annotated Definition of BCL11A and HMIP-2 Haplotypes Through the Analysis of Sicilian β-Thalassemia Patients with High Levels of Fetal Hemoglobin. Hemoglobin 2013; 37:423-34. [DOI: 10.3109/03630269.2013.800823] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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