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Reid M, Lin A, Farhat LC, Fernandez TV, Olfson E. The genetics of trichotillomania and excoriation disorder: A systematic review. Compr Psychiatry 2024; 133:152506. [PMID: 38833896 DOI: 10.1016/j.comppsych.2024.152506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 05/09/2024] [Accepted: 05/30/2024] [Indexed: 06/06/2024] Open
Abstract
BACKGROUND Trichotillomania (TTM) and excoriation disorder (ED) are impairing obsessive-compulsive related disorders that are common in the general population and for which there are no clear first-line medications, highlighting the need to better understand the underlying biology of these disorders to inform treatments. Given the importance of genetics in obsessive-compulsive disorder (OCD), evaluating genetic factors underlying TTM and ED may advance knowledge about the pathophysiology of these body-focused repetitive behaviors. AIM In this systematic review, we summarize the available evidence on the genetics of TTM and ED and highlight gaps in the field warranting further research. METHOD We systematically searched Embase, PsycInfo, PubMed, Medline, Scopus, and Web of Science for original studies in genetic epidemiology (family or twin studies) and molecular genetics (candidate gene and genome-wide) published up to June 2023. RESULTS Of the 3536 records identified, 109 studies were included in this review. These studies indicated that genetic factors play an important role in the development of TTM and ED, some of which may be shared across the OCD spectrum, but there are no known high-confidence specific genetic risk factors for either TTM or ED. CONCLUSIONS Our review underscores the need for additional genome-wide research conducted on the genetics of TTM and ED, for instance, genome-wide association and whole-genome/whole-exome DNA sequencing studies. Recent advances in genomics have led to the discovery of risk genes in several psychiatric disorders, including related conditions such as OCD, but to date, TTM and ED have remained understudied.
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Affiliation(s)
- Madison Reid
- Child Study Center, Yale University School of Medicine, New Haven, CT, USA; The University of the South, USA
| | - Ashley Lin
- Child Study Center, Yale University School of Medicine, New Haven, CT, USA
| | - Luis C Farhat
- Department of Psychiatry, Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, Brazil
| | - Thomas V Fernandez
- Child Study Center, Yale University School of Medicine, New Haven, CT, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Emily Olfson
- Child Study Center, Yale University School of Medicine, New Haven, CT, USA; Wu Tsai Institute, Yale University, New Haven, CT, USA.
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2
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Shaikh M, Doshi G. Epigenetic aging in major depressive disorder: Clocks, mechanisms and therapeutic perspectives. Eur J Pharmacol 2024; 978:176757. [PMID: 38897440 DOI: 10.1016/j.ejphar.2024.176757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/09/2024] [Accepted: 06/16/2024] [Indexed: 06/21/2024]
Abstract
Depression, a chronic mental disorder characterized by persistent sadness, loss of interest, and difficulty in daily tasks, impacts millions globally with varying treatment options. Antidepressants, despite their long half-life and minimal effectiveness, leave half of patients undertreated, highlighting the need for new therapies to enhance well-being. Epigenetics, which studies genetic changes in gene expression or cellular phenotype without altering the underlying Deoxyribonucleic Acid (DNA) sequence, is explored in this article. This article delves into the intricate relationship between epigenetic mechanisms and depression, shedding light on how environmental stressors, early-life adversity, and genetic predispositions shape gene expression patterns associated with depression. We have also discussed Histone Deacetylase (HDAC) inhibitors, which enhance cognitive function and mood regulation in depression. Non-coding RNAs, (ncRNAs) such as Long Non-Coding RNAs (lncRNAs) and micro RNA (miRNAs), are highlighted as potential biomarkers for detecting and monitoring major depressive disorder (MDD). This article also emphasizes the reversible nature of epigenetic modifications and their influence on neuronal growth processes, underscoring the dynamic interplay between genetics, environment, and epigenetics in depression development. It explores the therapeutic potential of targeting epigenetic pathways in treating clinical depression. Additionally, it examines clinical findings related to epigenetic clocks and their role in studying depression and biological aging.
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Affiliation(s)
- Muqtada Shaikh
- SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, 400 056, India
| | - Gaurav Doshi
- SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai, 400 056, India.
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3
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Krystal JH, Kavalali ET, Monteggia LM. Ketamine and rapid antidepressant action: new treatments and novel synaptic signaling mechanisms. Neuropsychopharmacology 2024; 49:41-50. [PMID: 37488280 PMCID: PMC10700627 DOI: 10.1038/s41386-023-01629-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/29/2023] [Accepted: 06/04/2023] [Indexed: 07/26/2023]
Abstract
Ketamine is an open channel blocker of ionotropic glutamatergic N-Methyl-D-Aspartate (NMDA) receptors. The discovery of its rapid antidepressant effects in patients with depression and treatment-resistant depression fostered novel effective treatments for mood disorders. This discovery not only provided new insight into the neurobiology of mood disorders but also uncovered fundamental synaptic plasticity mechanisms that underlie its treatment. In this review, we discuss key clinical aspects of ketamine's effect as a rapidly acting antidepressant, synaptic and circuit mechanisms underlying its action, as well as how these novel perspectives in clinical practice and synapse biology form a road map for future studies aimed at more effective treatments for neuropsychiatric disorders.
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Affiliation(s)
- John H Krystal
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, USA
| | - Ege T Kavalali
- Department of Pharmacology and the Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, USA
| | - Lisa M Monteggia
- Department of Pharmacology and the Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN, USA.
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4
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Zhu J, Li G, Huang Q, Wen J, Deng Y, Jiang J. TET3-mediated DNA demethylation and chromatin remodeling regulate T-2 toxin-induced human CYP1A1 expression and cytotoxicity in HepG2 cells. Biochem Pharmacol 2023; 211:115506. [PMID: 36948362 DOI: 10.1016/j.bcp.2023.115506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/24/2023]
Abstract
T-2 toxin is a hazardous environmental pollutant that poses a risk to both farm animals and humans. Our previous research has reported that T-2 toxin highly induced the expression of human cytochrome P450 1A1 (CYP1A1), which may be a representative inducible marker of T-2 toxin and mediate the toxicity of T-2 toxin. In this study, we found that T-2 toxin decreased the DNA methylation levels of the CpG islands on the CYP1A1 promoter by inducing the expression of eleven translocation family protein 3 (TET3) and facilitating its binding to the promoter. These DNA methylation changes then generated an activated chromatin structure on the CYP1A1 promoter by releasing the repressor complex methyl-binding protein 2 (MeCP2) and histone deacetylase 2 (HDAC2), increasing the active histone modification markers, including H3K4ac, H3K9ac and H3K14ac, and facilitating RNA pol II and NRF1/Sp1 recruitment, which ultimately led to the transcriptional activation of CYP1A1. Interestingly, TET3-mediated CYP1A1 induction enhanced the cytotoxicity of T-2 toxin through inhibiting cell proliferation. Our results demonstrate that T-2 toxin-induced CYP1A1 expression is detrimental to cells and clearly show how T-2 toxin inhibits cell proliferation through regulating CYP1A1 expression from an epigenetic perspective. The findings broaden our current knowledge of the epigenetic mechanisms regulating environmental factors-induced CYP1A1 expression and cytotoxicity. TET3 may serve as a potential new target for toxicogenic detoxification.
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Affiliation(s)
- Jiahui Zhu
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, Guangdong, P. R. China; Key Laboratory of Zoonosis of the Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Guihong Li
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, Guangdong, P. R. China; Key Laboratory of Zoonosis of the Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Qiang Huang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, Guangdong, P. R. China; Key Laboratory of Zoonosis of the Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Jikai Wen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, Guangdong, P. R. China; Key Laboratory of Zoonosis of the Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China
| | - Yiqun Deng
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, Guangdong, P. R. China; Key Laboratory of Zoonosis of the Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
| | - Jun Jiang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China; Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou 510642, Guangdong, P. R. China; Key Laboratory of Zoonosis of the Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou 510642, Guangdong, P. R. China.
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5
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MeCP2 Is an Epigenetic Factor That Links DNA Methylation with Brain Metabolism. Int J Mol Sci 2023; 24:ijms24044218. [PMID: 36835623 PMCID: PMC9966807 DOI: 10.3390/ijms24044218] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/10/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
DNA methylation, one of the most well-studied epigenetic modifications, is involved in a wide spectrum of biological processes. Epigenetic mechanisms control cellular morphology and function. Such regulatory mechanisms involve histone modifications, chromatin remodeling, DNA methylation, non-coding regulatory RNA molecules, and RNA modifications. One of the most well-studied epigenetic modifications is DNA methylation that plays key roles in development, health, and disease. Our brain is probably the most complex part of our body, with a high level of DNA methylation. A key protein that binds to different types of methylated DNA in the brain is the methyl-CpG binding protein 2 (MeCP2). MeCP2 acts in a dose-dependent manner and its abnormally high or low expression level, deregulation, and/or genetic mutations lead to neurodevelopmental disorders and aberrant brain function. Recently, some of MeCP2-associated neurodevelopmental disorders have emerged as neurometabolic disorders, suggesting a role for MeCP2 in brain metabolism. Of note, MECP2 loss-of-function mutation in Rett Syndrome is reported to cause impairment of glucose and cholesterol metabolism in human patients and/or mouse models of disease. The purpose of this review is to outline the metabolic abnormalities in MeCP2-associated neurodevelopmental disorders that currently have no available cure. We aim to provide an updated overview into the role of metabolic defects associated with MeCP2-mediated cellular function for consideration of future therapeutic strategies.
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Zheng HL, Sun SY, Jin T, Zhang M, Zeng Y, Liu Q, Yang K, Wei R, Pan Z, Lin F. Transcription factor ETS proto-oncogene 1 contributes to neuropathic pain by regulating histone deacetylase 1 in primary afferent neurons. Mol Pain 2023; 19:17448069231152125. [PMID: 36604795 PMCID: PMC9909074 DOI: 10.1177/17448069231152125] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 01/07/2023] Open
Abstract
Nerve injury can induce aberrant changes in ion channels, enzymes, and cytokines/chemokines in the dorsal root ganglia (DRGs); these changes are due to or at least partly governed by transcription factors that contribute to the genesis of neuropathic pain. However, the involvement of transcription factors in neuropathic pain is poorly understood. In this study, we report that transcription factor (TF) ETS proto-oncogene 1 (ETS1) is required for the initiation and development of neuropathic pain. Sciatic nerve chronic constrictive injury (CCI, a clinical neuropathic pain model) increases ETS1 expression in the injured male mouse DRG. Blocking this upregulation alleviated CCI-induced mechanical allodynia and thermal hyperalgesia, with no apparent effect on locomotor function. Mimicking this upregulation results in the genesis of nociception hypersensitivity; mechanistically, nerve injury-induced ETS1 upregulation promotes the expression of histone deacetylase 1 (HDAC1, a key initiator of pain) via enhancing its binding activity to the HDAC1 promotor, leading to the elevation of spinal central sensitization, as evidenced by increased expression of p-ERK1/2 and GFAP in the dorsal spinal horn. It appears that the ETS1/HDAC1 axis in DRG may have a critical role in the development and maintenance of neuropathic pain, and ETS1 is a potential therapeutic target in neuropathic pain.
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Affiliation(s)
- Hong-Li Zheng
- Graduate School, Wannan Medical College, Wuhu, China
- Department of Pain, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
| | - Shi-Yu Sun
- Department of Pain, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
| | - Tong Jin
- Department of Pain, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
| | - Ming Zhang
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
| | - Ying Zeng
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
| | - Qiaoqiao Liu
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
| | - Kehui Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
| | - Runa Wei
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
| | - Zhiqiang Pan
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application Technology, NMPA Key Laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs, Xuzhou Medical University, Xuzhou, China
| | - Fuqing Lin
- Graduate School, Wannan Medical College, Wuhu, China
- Department of Pain, Shanghai Tenth People’s Hospital, Tongji University, Shanghai, China
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7
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Bai Y, Wang H, Li C. SAPAP Scaffold Proteins: From Synaptic Function to Neuropsychiatric Disorders. Cells 2022; 11:cells11233815. [PMID: 36497075 PMCID: PMC9740047 DOI: 10.3390/cells11233815] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/24/2022] [Accepted: 11/25/2022] [Indexed: 11/30/2022] Open
Abstract
Excitatory (glutamatergic) synaptic transmission underlies many aspects of brain activity and the genesis of normal human behavior. The postsynaptic scaffolding proteins SAP90/PSD-95-associated proteins (SAPAPs), which are abundant components of the postsynaptic density (PSD) at excitatory synapses, play critical roles in synaptic structure, formation, development, plasticity, and signaling. The convergence of human genetic data with recent in vitro and in vivo animal model data indicates that mutations in the genes encoding SAPAP1-4 are associated with neurological and psychiatric disorders, and that dysfunction of SAPAP scaffolding proteins may contribute to the pathogenesis of various neuropsychiatric disorders, such as schizophrenia, autism spectrum disorders, obsessive compulsive disorders, Alzheimer's disease, and bipolar disorder. Here, we review recent major genetic, epigenetic, molecular, behavioral, electrophysiological, and circuitry studies that have advanced our knowledge by clarifying the roles of SAPAP proteins at the synapses, providing new insights into the mechanistic links to neurodevelopmental and neuropsychiatric disorders.
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Affiliation(s)
- Yunxia Bai
- Key Laboratory of Brain Functional Genomics (STCSM & MOE), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China
- Shanghai Changning Mental Health Center, Shanghai 200335, China
| | - Huimin Wang
- Key Laboratory of Brain Functional Genomics (STCSM & MOE), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China
- Shanghai Changning Mental Health Center, Shanghai 200335, China
- NYU-ECNU Institute of Brain and Cognitive Science at NYU Shanghai, Shanghai 200062, China
| | - Chunxia Li
- Key Laboratory of Brain Functional Genomics (STCSM & MOE), Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai 200062, China
- Shanghai Changning Mental Health Center, Shanghai 200335, China
- Correspondence:
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8
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Xue J, Qian D, Zhang B, Yang J, Li W, Bao Y, Qiu S, Fu Y, Wang S, Yuan TF, Lu W. Midbrain dopamine neurons arbiter OCD-like behavior. Proc Natl Acad Sci U S A 2022; 119:e2207545119. [PMID: 36343236 PMCID: PMC9674233 DOI: 10.1073/pnas.2207545119] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 09/28/2022] [Indexed: 08/19/2023] Open
Abstract
The neurobiological understanding of obsessive-compulsive disorder (OCD) includes dysregulated frontostriatal circuitry and altered monoamine transmission. Repetitive stereotyped behavior (e.g., grooming), a featured symptom in OCD, has been proposed to be associated with perturbed dopamine (DA) signaling. However, the precise brain circuits participating in DA's control over this behavioral phenotype remain elusive. Here, we identified that DA neurons in substantia nigra pars compacta (SNc) orchestrate ventromedial striatum (VMS) microcircuits as well as lateral orbitofrontal cortex (lOFC) during self-grooming behavior. SNc-VMS and SNc-lOFC dopaminergic projections modulate grooming behaviors and striatal microcircuit function differentially. Specifically, the activity of the SNc-VMS pathway promotes grooming via D1 receptors, whereas the activity of the SNc-lOFC pathway suppresses grooming via D2 receptors. SNc DA neuron activity thus controls the OCD-like behaviors via both striatal and cortical projections as dual gating. These results support both pharmacological and brain-stimulation treatments for OCD.
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Affiliation(s)
- Jinwen Xue
- Minister of Education (MOE) Key Laboratory of Developmental Genes and Human Disease, School of Life Science and Technology, Southeast University, Nanjing 210096, China
| | - Dandan Qian
- Minister of Education (MOE) Key Laboratory of Developmental Genes and Human Disease, School of Life Science and Technology, Southeast University, Nanjing 210096, China
| | - Bingqian Zhang
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - Jingxuan Yang
- Minister of Education (MOE) Key Laboratory of Developmental Genes and Human Disease, School of Life Science and Technology, Southeast University, Nanjing 210096, China
| | - Wei Li
- Minister of Education (MOE) Key Laboratory of Developmental Genes and Human Disease, School of Life Science and Technology, Southeast University, Nanjing 210096, China
| | - Yifei Bao
- Minister of Education (MOE) Key Laboratory of Developmental Genes and Human Disease, School of Life Science and Technology, Southeast University, Nanjing 210096, China
| | - Shi Qiu
- Minister of Education (MOE) Key Laboratory of Developmental Genes and Human Disease, School of Life Science and Technology, Southeast University, Nanjing 210096, China
| | - Yi Fu
- Minister of Education (MOE) Key Laboratory of Developmental Genes and Human Disease, School of Life Science and Technology, Southeast University, Nanjing 210096, China
| | - Shaoli Wang
- Minister of Education (MOE) Key Laboratory of Developmental Genes and Human Disease, School of Life Science and Technology, Southeast University, Nanjing 210096, China
- Department of Neurosurgery, Huashan Hospital, Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Shanghai Medical College of Fudan University, Shanghai 200032, China
| | - Ti-Fei Yuan
- Shanghai Key Laboratory of Psychotic Disorders, Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China
| | - Wei Lu
- Minister of Education (MOE) Key Laboratory of Developmental Genes and Human Disease, School of Life Science and Technology, Southeast University, Nanjing 210096, China
- Department of Neurosurgery, Huashan Hospital, Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Shanghai Medical College of Fudan University, Shanghai 200032, China
- Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
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Horvath PM, Piazza MK, Kavalali ET, Monteggia LM. MeCP2 loss-of-function dysregulates microRNAs regionally and disrupts excitatory/inhibitory synaptic transmission balance. Hippocampus 2022; 32:610-623. [PMID: 35851733 PMCID: PMC9344394 DOI: 10.1002/hipo.23455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 06/11/2022] [Accepted: 06/25/2022] [Indexed: 11/06/2022]
Abstract
Rett syndrome is a leading cause of intellectual disability in females primarily caused by loss of function mutations in the transcriptional regulator MeCP2. Loss of MeCP2 leads to a host of synaptic phenotypes that are believed to underlie Rett syndrome pathophysiology. Synaptic deficits vary by brain region upon MeCP2 loss, suggesting distinct molecular alterations leading to disparate synaptic outcomes. In this study, we examined the contribution of MeCP2's newly described role in miRNA regulation to regional molecular and synaptic impairments. Two miRNAs, miR-101a and miR-203, were identified and confirmed as upregulated in MeCP2 KO mice in the hippocampus and cortex, respectively. miR-101a overexpression in hippocampal cultures led to opposing effects at excitatory and inhibitory synapses and in spontaneous and evoked neurotransmission, revealing the potential for a single miRNA to broadly regulate synapse function in the hippocampus. These results highlight the importance of regional alterations in miRNA expression and the specific impact on synaptic function with potential implications for Rett syndrome.
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Affiliation(s)
- Patricia M. Horvath
- Department of Pharmacology, Vanderbilt University, Nashville, Tennessee, USA,Department of Neuroscience, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Michelle K. Piazza
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, Tennessee, USA,Neuroscience Program, Vanderbilt University, Nashville, Tennessee, USA
| | - Ege T. Kavalali
- Department of Pharmacology, Vanderbilt University, Nashville, Tennessee, USA,Vanderbilt Brain Institute, Vanderbilt University, Nashville, Tennessee, USA
| | - Lisa M. Monteggia
- Department of Pharmacology, Vanderbilt University, Nashville, Tennessee, USA,Vanderbilt Brain Institute, Vanderbilt University, Nashville, Tennessee, USA
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10
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Epigenetics of Autism Spectrum Disorder: Histone Deacetylases. Biol Psychiatry 2022; 91:922-933. [PMID: 35120709 DOI: 10.1016/j.biopsych.2021.11.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 01/08/2023]
Abstract
The etiology of autism spectrum disorder (ASD) remains unknown, but gene-environment interactions, mediated through epigenetic mechanisms, are thought to be a key contributing factor. Prenatal environmental factors have been shown to be associated with both increased risk of ASD and altered histone deacetylases (HDACs) or acetylation levels. The relationship between epigenetic changes and gene expression in ASD suggests that alterations in histone acetylation, which lead to changes in gene transcription, may play a key role in ASD. Alterations in the acetylome have been demonstrated for several genes in ASD, including genes involved in synaptic function, neuronal excitability, and immune responses, which are mechanisms previously implicated in ASD. We review preclinical and clinical studies that investigated HDACs and autism-associated behaviors and discuss risk genes for ASD that code for proteins associated with HDACs. HDACs are also implicated in neurodevelopmental disorders with a known genetic etiology, such as 15q11-q13 duplication and Phelan-McDermid syndrome, which share clinical features and diagnostic comorbidities (e.g., epilepsy, anxiety, and intellectual disability) with ASD. Furthermore, we highlight factors that affect the behavioral phenotype of acetylome changes, including sensitive developmental periods and brain region specificity in the context of epigenetic programming.
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11
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Suzuki K, Kim JW, Nosyreva E, Kavalali ET, Monteggia LM. Convergence of distinct signaling pathways on synaptic scaling to trigger rapid antidepressant action. Cell Rep 2021; 37:109918. [PMID: 34731624 PMCID: PMC8590465 DOI: 10.1016/j.celrep.2021.109918] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 05/10/2021] [Accepted: 10/11/2021] [Indexed: 11/23/2022] Open
Abstract
Ketamine is a noncompetitive glutamatergic N-methyl-d-aspartate receptor (NMDAR) antagonist that exerts rapid antidepressant effects. Preclinical studies identify eukaryotic elongation factor 2 kinase (eEF2K) signaling as essential for the rapid antidepressant action of ketamine. Here, we combine genetic, electrophysiological, and pharmacological strategies to investigate the role of eEF2K in synaptic function and find that acute, but not chronic, inhibition of eEF2K activity induces rapid synaptic scaling in the hippocampus. Retinoic acid (RA) signaling also elicits a similar form of rapid synaptic scaling in the hippocampus, which we observe is independent of eEF2K functioni. The RA signaling pathway is not required for ketamine-mediated antidepressant action; however, direct activation of the retinoic acid receptor α (RARα) evokes rapid antidepressant action resembling ketamine. Our findings show that ketamine and RARα activation independently elicit a similar form of multiplicative synaptic scaling that is causal for rapid antidepressant action.
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Affiliation(s)
- Kanzo Suzuki
- Department of Pharmacology and the Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN 37232, USA
| | - Ji-Woon Kim
- Department of Pharmacology and the Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN 37232, USA
| | - Elena Nosyreva
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390-9111, USA
| | - Ege T Kavalali
- Department of Pharmacology and the Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN 37232, USA.
| | - Lisa M Monteggia
- Department of Pharmacology and the Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN 37232, USA.
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12
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Murasawa H, Kobayashi H, Imai J, Nagase T, Soumiya H, Fukumitsu H. Substantial acetylcholine reduction in multiple brain regions of Mecp2-deficient female rats and associated behavioral abnormalities. PLoS One 2021; 16:e0258830. [PMID: 34673817 PMCID: PMC8530288 DOI: 10.1371/journal.pone.0258830] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 10/06/2021] [Indexed: 11/24/2022] Open
Abstract
Rett syndrome (RTT) is a neurodevelopmental disorder with X-linked dominant inheritance caused mainly by mutations in the methyl-CpG-binding protein 2 (MECP2) gene. The effects of various Mecp2 mutations have been extensively assessed in mouse models, but none adequately mimic the symptoms and pathological changes of RTT. In this study, we assessed the effects of Mecp2 gene deletion on female rats (Mecp2+/−) and found severe impairments in social behavior [at 8 weeks (w), 12 w, and 23 w of age], motor function [at 16 w and 26 w], and spatial cognition [at 29 w] as well as lower plasma insulin-like growth factor (but not brain-derived neurotrophic factor) and markedly reduced acetylcholine (30%–50%) in multiple brain regions compared to female Mecp2+/+ rats [at 29 w]. Alternatively, changes in brain monoamine levels were relatively small, in contrast to reports on mouse Mecp2 mutants. Female Mecp2-deficient rats express phenotypes resembling RTT and so may provide a robust model for future research on RTT pathobiology and treatment.
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Affiliation(s)
- Hiroyasu Murasawa
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, Gifu, Japan
- Hashima Laboratory, Nihon Bioresearch Inc, Gifu, Japan
| | - Hiroyuki Kobayashi
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, Gifu, Japan
- Hashima Laboratory, Nihon Bioresearch Inc, Gifu, Japan
| | - Jun Imai
- Hashima Laboratory, Nihon Bioresearch Inc, Gifu, Japan
| | | | - Hitomi Soumiya
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, Gifu, Japan
| | - Hidefumi Fukumitsu
- Laboratory of Molecular Biology, Department of Biofunctional Analysis, Gifu Pharmaceutical University, Gifu, Japan
- * E-mail:
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13
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Bellia F, Vismara M, Annunzi E, Cifani C, Benatti B, Dell'Osso B, D'Addario C. Genetic and epigenetic architecture of Obsessive-Compulsive Disorder: In search of possible diagnostic and prognostic biomarkers. J Psychiatr Res 2021; 137:554-571. [PMID: 33213890 DOI: 10.1016/j.jpsychires.2020.10.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/25/2020] [Accepted: 10/28/2020] [Indexed: 02/07/2023]
Abstract
Obsessive-Compulsive Disorder (OCD) is a prevalent and severe clinical condition whose hallmarks are excessive, unwanted thoughts (obsessions) and repetitive behaviors (compulsions). The onset of symptoms generally occurs during pre-adult life and typically affects subjects in different aspects of their life's, compromising social and professional relationships. Although robust evidence suggests a genetic component in the etiopathogenesis of OCD, the causes of the disorder are still not completely understood. It is thus of relevance to take into account how genes interact with environmental risk factors, thought to be mediated by epigenetic mechanisms. We here provide an overview of genetic and epigenetic mechanisms of OCD, focusing on the modulation of key central nervous system genes, in the attempt to suggest possible disease biomarkers.
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Affiliation(s)
- Fabio Bellia
- Faculty of Bioscience, University of Teramo, Teramo, Italy
| | - Matteo Vismara
- Department of Biomedical and Clinical Sciences Luigi Sacco, University of Milan, Milano, Italy
| | - Eugenia Annunzi
- Faculty of Bioscience, University of Teramo, Teramo, Italy; Department of Neuroscience, Imaging and Clinical Sciences, Gabriele D'Annunzio University, Chieti, Italy
| | - Carlo Cifani
- School of Pharmacy, University of Camerino, Camerino, Italy
| | - Beatrice Benatti
- Department of Biomedical and Clinical Sciences Luigi Sacco, University of Milan, Milano, Italy; CRC "Aldo Ravelli", University of Milan, Milano, Italy
| | - Bernardo Dell'Osso
- Department of Biomedical and Clinical Sciences Luigi Sacco, University of Milan, Milano, Italy; CRC "Aldo Ravelli", University of Milan, Milano, Italy; Department of Psychiatry and Behavioral Sciences, Stanford University, CA, USA.
| | - Claudio D'Addario
- Faculty of Bioscience, University of Teramo, Teramo, Italy; Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.
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14
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Benzina N, N'Diaye K, Pelissolo A, Mallet L, Burguière E. A cross-species assessment of behavioral flexibility in compulsive disorders. Commun Biol 2021; 4:96. [PMID: 33479495 PMCID: PMC7820021 DOI: 10.1038/s42003-020-01611-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 12/16/2020] [Indexed: 11/08/2022] Open
Abstract
Lack of behavioral flexibility has been proposed as one underlying cause of compulsions, defined as repetitive behaviors performed through rigid rituals. However, experimental evidence has proven inconsistent across human and animal models of compulsive-like behavior. In the present study, applying a similarly-designed reversal learning task in two different species, which share a common symptom of compulsivity (human OCD patients and Sapap3 KO mice), we found no consistent link between compulsive behaviors and lack of behavioral flexibility. However, we showed that a distinct subgroup of compulsive individuals of both species exhibit a behavioral flexibility deficit in reversal learning. This deficit was not due to perseverative, rigid behaviors as commonly hypothesized, but rather due to an increase in response lability. These cross-species results highlight the necessity to consider the heterogeneity of cognitive deficits in compulsive disorders and call for reconsidering the role of behavioral flexibility in the aetiology of compulsive behaviors.
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Affiliation(s)
- Nabil Benzina
- Institut du Cerveau, ICM, Inserm U 1127, CNRS UMR 7225, Sorbonne Université, 47 bd de l'Hôpital, 75013, Paris, France.
| | - Karim N'Diaye
- Institut du Cerveau, ICM, Inserm U 1127, CNRS UMR 7225, Sorbonne Université, 47 bd de l'Hôpital, 75013, Paris, France
| | - Antoine Pelissolo
- Assistance Publique-Hôpitaux de Paris, DMU IMPACT, Département Médical-Universitaire de Psychiatrie et d'Addictologie, Hôpitaux Universitaires Henri Mondor-Albert Chenevier, Université Paris-Est Créteil, 40 rue de Mesly, 94000, Créteil, France
- INSERM U955, IMRB, 8 rue du Général Sarrail, 94010, Créteil cedex, France
| | - Luc Mallet
- Institut du Cerveau, ICM, Inserm U 1127, CNRS UMR 7225, Sorbonne Université, 47 bd de l'Hôpital, 75013, Paris, France
- Assistance Publique-Hôpitaux de Paris, DMU IMPACT, Département Médical-Universitaire de Psychiatrie et d'Addictologie, Hôpitaux Universitaires Henri Mondor-Albert Chenevier, Université Paris-Est Créteil, 40 rue de Mesly, 94000, Créteil, France
- Department of Mental Health and Psychiatry, Global Health Institute, University of Geneva, 9 Chemin des Mines, 1202, Geneva, Switzerland
| | - Eric Burguière
- Institut du Cerveau, ICM, Inserm U 1127, CNRS UMR 7225, Sorbonne Université, 47 bd de l'Hôpital, 75013, Paris, France.
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15
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Hadjas LC, Schartner MM, Cand J, Creed MC, Pascoli V, Lüscher C, Simmler LD. Projection-specific deficits in synaptic transmission in adult Sapap3-knockout mice. Neuropsychopharmacology 2020; 45:2020-2029. [PMID: 32585679 PMCID: PMC7547074 DOI: 10.1038/s41386-020-0747-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 11/09/2022]
Abstract
Obsessive-compulsive disorder (OCD) is a circuit disorder involving corticostriatal projections, which play a role in motor control. The Sapap3-knockout (KO) mouse is a mouse model to study OCD and recapitulates OCD-like compulsion through excessive grooming behavior, with skin lesions appearing at advanced age. Deficits in corticostriatal control provide a link to the pathophysiology of OCD. However, there remain significant gaps in the characterization of the Sapap3-KO mouse, with respect to age, specificity of synaptic dysfunction, and locomotor phenotype. We therefore investigated the corticostriatal synaptic phenotype of Sapap3-KO mice using patch-clamp slice electrophysiology, in adult mice and with projection specificity. We also analyzed grooming across age and locomotor phenotype with a novel, unsupervised machine learning technique (MoSeq). Increased grooming in Sapap3-KO mice without skin lesions was age independent. Synaptic deficits persisted in adulthood and involved the projections from the motor cortices and cingulate cortex to the dorsolateral and dorsomedial striatum. Decreased synaptic strength was evident at the input from the primary motor cortex by reduction in AMPA receptor function. Hypolocomotion, i.e., slowness of movement, was consistently observed in Sapap3-KO mice. Our findings emphasize the utility of young adult Sapap3-KO mice to investigate corticostriatal synaptic dysfunction in motor control.
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Affiliation(s)
- Lotfi C. Hadjas
- grid.8591.50000 0001 2322 4988Department of Basic Neurosciences, University of Geneva, Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - Michael M. Schartner
- grid.8591.50000 0001 2322 4988Department of Basic Neurosciences, University of Geneva, Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - Jennifer Cand
- grid.8591.50000 0001 2322 4988Department of Basic Neurosciences, University of Geneva, Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - Meaghan C. Creed
- grid.8591.50000 0001 2322 4988Department of Basic Neurosciences, University of Geneva, Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - Vincent Pascoli
- grid.8591.50000 0001 2322 4988Department of Basic Neurosciences, University of Geneva, Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - Christian Lüscher
- grid.8591.50000 0001 2322 4988Department of Basic Neurosciences, University of Geneva, Rue Michel-Servet 1, 1206 Geneva, Switzerland ,grid.150338.c0000 0001 0721 9812Service de Neurologie, Department of Clinical Neurosciences, Geneva University Hospital, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland
| | - Linda D. Simmler
- grid.8591.50000 0001 2322 4988Department of Basic Neurosciences, University of Geneva, Rue Michel-Servet 1, 1206 Geneva, Switzerland
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16
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Progression of obsessive compulsive disorder-like grooming in Sapap3 knockout mice: A longitudinal [ 11C]ABP688 PET study. Neuropharmacology 2020; 177:108160. [PMID: 32454126 DOI: 10.1016/j.neuropharm.2020.108160] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 03/18/2020] [Accepted: 05/21/2020] [Indexed: 01/23/2023]
Abstract
We aimed to evaluate [3-(6-methyl-pyridin-2-ylethynyl)-cyclohex-2-enone-0-11C-methyloxime] ([11C]ABP688) small animal positron emission tomography (μPET) as a biomarker to visualize possible longitudinal changes in metabotropic glutamate receptor 5 (mGluR5) availability in the brain of SAP90/PSD-95 associated protein 3 (Sapap3) knockout (ko) mice, showing obsessive compulsive disorder (OCD)-like behavior. METHODS Alongside the assessment of grooming, we performed [11C]ABP688 μPET/CT imaging in wildtype (wt; n=10) and ko (n=11) mice both at 3 and 9 months. Using the simplified reference tissue method (SRTM), the nondisplaceable binding potential (BPND) was calculated representing the in vivo availability of the metabotropic glutamate receptor 5 (mGluR5) in the brain with the cerebellum as a reference region. Longitudinal voxel-based statistical parametric mapping (SPM) was performed on BPND images. Results were verified using [11C]ABP688 ex vivo autoradiography, [3H]ABP688 in vitro autoradiography, and mGluR5 immunohistochemistry. RESULTS Cross-sectional comparisons revealed significantly increased grooming parameters in ko animals, at both time points. A significant longitudinal increase in % grooming duration (+268.25%; p<0.05) reflected aggravation of this behavior in ko mice. [11C]ABP688 μPET revealed significantly lower mGluR5 availability in the cortex, striatum, hippocampus, and amygdala of ko mice at both ages. A significant longitudinal BPND decline was present for ko mice (p<0.01: cortex -17.14%, striatum -19.82%, amygdala -23.57%; p<0.05: hippocampus -15.53%), which was confirmed by SPM (p<0.01). CONCLUSION Sapap3 ko mice show a decline in mGluR5 availability in OCD relevant brain regions parallel to the worsening of OCD-like behavior. This demonstrates a potential role for [11C]ABP688 PET as a biomarker to monitor disease progression in vivo.
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17
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Pourpre R, Naudon L, Meziane H, Lakisic G, Jouneau L, Varet H, Legendre R, Wendling O, Selloum M, Proux C, Coppée JY, Herault Y, Bierne H. BAHD1 haploinsufficiency results in anxiety-like phenotypes in male mice. PLoS One 2020; 15:e0232789. [PMID: 32407325 PMCID: PMC7224496 DOI: 10.1371/journal.pone.0232789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/21/2020] [Indexed: 02/07/2023] Open
Abstract
BAHD1 is a heterochomatinization factor recently described as a component of a multiprotein complex associated with histone deacetylases HDAC1/2. The physiological and patho-physiological functions of BAHD1 are not yet well characterized. Here, we examined the consequences of BAHD1 deficiency in the brains of male mice. While Bahd1 knockout mice had no detectable defects in brain anatomy, RNA sequencing profiling revealed about 2500 deregulated genes in Bahd1-/- brains compared to Bahd1+/+ brains. A majority of these genes were involved in nervous system development and function, behavior, metabolism and immunity. Exploration of the Allen Brain Atlas and Dropviz databases, assessing gene expression in the brain, revealed that expression of the Bahd1 gene was limited to a few territories and cell subtypes, particularly in the hippocampal formation, the isocortex and the olfactory regions. The effect of partial BAHD1 deficiency on behavior was then evaluated on Bahd1 heterozygous male mice, which have no lethal or metabolic phenotypes. Bahd1+/- mice showed anxiety-like behavior and reduced prepulse inhibition (PPI) of the startle response. Altogether, these results suggest that BAHD1 plays a role in chromatin-dependent gene regulation in a subset of brain cells and support recent evidence linking genetic alteration of BAHD1 to psychiatric disorders in a human patient.
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Affiliation(s)
- Renaud Pourpre
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
| | - Laurent Naudon
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
- Micalis Institute, Université Paris-Saclay, CNRS, INRAE, AgroParisTech, Jouy-en-Josas, France
| | - Hamid Meziane
- Institut Clinique de la Souris-ICS, Université de Strasbourg, CNRS, INSERM, PHENOMIN, Illkirch, France
| | - Goran Lakisic
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
| | - Luc Jouneau
- Université Paris-Saclay, INRAE, Virologie et Immunologie Moléculaires, Jouy-en-Josas, France
| | - Hugo Varet
- Institut Pasteur, Bioinformatics and Biostatistics Hub, C3BI, USR 3756 IP CNRS, Paris, France
- Institut Pasteur, Transcriptome and Epigenome Platform, Biomics Pole, Paris, France
| | - Rachel Legendre
- Institut Pasteur, Bioinformatics and Biostatistics Hub, C3BI, USR 3756 IP CNRS, Paris, France
- Institut Pasteur, Transcriptome and Epigenome Platform, Biomics Pole, Paris, France
| | - Olivia Wendling
- Institut Clinique de la Souris-ICS, Université de Strasbourg, CNRS, INSERM, PHENOMIN, Illkirch, France
| | - Mohammed Selloum
- Institut Clinique de la Souris-ICS, Université de Strasbourg, CNRS, INSERM, PHENOMIN, Illkirch, France
| | - Caroline Proux
- Institut Pasteur, Transcriptome and Epigenome Platform, Biomics Pole, Paris, France
| | - Jean-Yves Coppée
- Institut Pasteur, Transcriptome and Epigenome Platform, Biomics Pole, Paris, France
| | - Yann Herault
- Institut Clinique de la Souris-ICS, Université de Strasbourg, CNRS, INSERM, PHENOMIN, Illkirch, France
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique Biologie Moléculaire et Cellulaire (IGBMC), UMR7104, U1268, Illkirch, France
| | - Hélène Bierne
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France
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18
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Wu T, Sun XY, Yang X, Liu L, Tong K, Gao Y, Hao JR, Cao J, Gao C. Histone H3K9 Trimethylation Downregulates the Expression of Brain-Derived Neurotrophic Factor in the Dorsal Hippocampus and Impairs Memory Formation During Anaesthesia and Surgery. Front Mol Neurosci 2019; 12:246. [PMID: 31708739 PMCID: PMC6823536 DOI: 10.3389/fnmol.2019.00246] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 09/24/2019] [Indexed: 01/01/2023] Open
Abstract
Brain-derived neurotrophic factor (BDNF) is essential for cognitive and memory functions. Abnormal BDNF expression in the central nervous system may impair these functions. Anaesthesia and surgery can induce perioperative neurocognitive disorders (PND). Clinical studies show that BDNF expression is decreased in patients presenting with cognitive impairment after anaesthesia and surgery. However, the molecular mechanism is still unclear. Epigenetic regulation plays an important role in cognition. The hypermethylation of H3K9 is crucial for transcriptional silencing and the onset of cognitive disorders. Here, we hypothesised that H3K9 trimethylation repressed BDNF expression and impaired memory formation or recall during anaesthesia and surgery. Laparotomy under isoflurane inhalation anaesthesia, behavioural tests, Western blotting, quantitative real-time reverse-transcription polymerase chain reaction (qRT-PCR), chromatin immunoprecipitation (ChIP), and immunohistochemistry were used in this study. BDNF expression was decreased in the hippocampus after anaesthesia and surgery. Cognitive impairment affected memory formation but not recall. The trimethylation of H3K9 downregulated BDNF expression. The overexpression of BDNF or use of exogenous BDNF improved the impairment of memory formation caused by anaesthesia and surgery. Therefore, inhibiting H3K9 trimethylation and increasing the expression of BDNF may help prevent PND in the clinical setting.
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Affiliation(s)
- Tong Wu
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China.,Department of Anesthesia, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xiao-Yu Sun
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Xiu Yang
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Le Liu
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Kun Tong
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Ya Gao
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Jing-Ru Hao
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
| | - Jing Cao
- Department of Anesthesia, Xuzhou Central Hospital, The Xuzhou Clinical College of Xuzhou Medical University, Xuzhou, China
| | - Can Gao
- Jiangsu Province Key Laboratory of Anesthesiology, Jiangsu Province Key Laboratory of Anesthesia and Analgesia Application, Xuzhou Medical University, Xuzhou, China
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19
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Bian E, Chen X, Xu Y, Ji X, Cheng M, Wang H, Fang Z, Zhao B. A central role for MeCP2 in the epigenetic repression of miR-200c during epithelial-to-mesenchymal transition of glioma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:366. [PMID: 31429770 PMCID: PMC6702741 DOI: 10.1186/s13046-019-1341-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 07/24/2019] [Indexed: 02/07/2023]
Abstract
Background The epithelial-to-mesenchymal transition (EMT) has been linked to the regulation of glioma progression. However, the underlying signaling mechanisms that regulate EMT are poorly understood. Methods Quantitative real-time PCR (RT-qPCR) and western blot were performed to detect the expression of MeCP2 in glioma tissues and cell lines. MeCP2 functions were tested with cell immunofluorescence staining and western blot. For in vivo experiments, mouse xenograft model was used to investigate the effects of MeCP2 on glioma. ChIP and Co-IP were used to detect the relationships among MeCP2, miR-200c and Suv39H1. Results In this study, we found that MeCP2 was frequently up-regulated in human glioma tissues and cell lines. MeCP2 knockdown remarkably induced cell epithelial phenotype and inhibited mesenchymal marker ZEB1 and ZEB2 in vitro and in vivo. In addition, MeCP2 in glioma tissues was negatively correlated with miR-200c expression, and miR-200c overexpression partially abrogated mesenchymal phenotype induced by MeCP2. More importantly, we showed that MeCP2 recruited H3K9 to the promoter of miR-200c by interacting with SUV39H1, resulting in EMT of glioma cells. Conclusions This study for the first time reveals MeCP2 as a novel regulator of EMT in glioma and suggest that MeCP2 inhibition may represent a promising therapeutic option for suppressing EMT in glioma. Electronic supplementary material The online version of this article (10.1186/s13046-019-1341-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Erbao Bian
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui Province, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Xueran Chen
- Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China
| | - Yadi Xu
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui Province, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Xinghu Ji
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui Province, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Meng Cheng
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui Province, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Hongliang Wang
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui Province, China.,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China
| | - Zhiyou Fang
- Anhui Province Key Laboratory of Medical Physics and Technology, Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, No. 350, Shushan Hu Road, Hefei, 230031, Anhui, China.
| | - Bing Zhao
- Department of Neurosurgery, The Second Affiliated Hospital of Anhui Medical University, 678 Fu Rong Road, Hefei, 230601, Anhui Province, China. .,Cerebral Vascular Disease Research Center, Anhui Medical University, Hefei, 230601, China.
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20
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Keidar L, Gerlitz G, Kshirsagar A, Tsoory M, Olender T, Wang X, Yang Y, Chen YS, Yang YG, Voineagu I, Reiner O. Interplay of LIS1 and MeCP2: Interactions and Implications With the Neurodevelopmental Disorders Lissencephaly and Rett Syndrome. Front Cell Neurosci 2019; 13:370. [PMID: 31474834 PMCID: PMC6703185 DOI: 10.3389/fncel.2019.00370] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/30/2019] [Indexed: 12/30/2022] Open
Abstract
LIS1 is the main causative gene for lissencephaly, while MeCP2 is the main causative gene for Rett syndrome, both of which are neurodevelopmental diseases. Here we report nuclear functions for LIS1 and identify previously unrecognized physical and genetic interactions between the products of these two genes in the cell nucleus, that has implications on MeCP2 organization, neuronal gene expression and mouse behavior. Reduced LIS1 levels affect the association of MeCP2 with chromatin. Transcriptome analysis of primary cortical neurons derived from wild type, Lis1±, MeCP2−/y, or double mutants mice revealed a large overlap in the differentially expressed (DE) genes between the various mutants. Overall, our findings provide insights on molecular mechanisms involved in the neurodevelopmental disorders lissencephaly and Rett syndrome caused by dysfunction of LIS1 and MeCP2, respectively.
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Affiliation(s)
- Liraz Keidar
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Gabi Gerlitz
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Aditya Kshirsagar
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Michael Tsoory
- Department of Veterinary Resources, Weizmann Institute of Science, Rehovot, Israel
| | - Tsviya Olender
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
| | - Xing Wang
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Ying Yang
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Yu-Sheng Chen
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Yun-Gui Yang
- Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Irina Voineagu
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Orly Reiner
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel
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21
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Lee Y, Han PL. Early-Life Stress in D2 Heterozygous Mice Promotes Autistic-like Behaviors through the Downregulation of the BDNF-TrkB Pathway in the Dorsal Striatum. Exp Neurobiol 2019; 28:337-351. [PMID: 31308794 PMCID: PMC6614072 DOI: 10.5607/en.2019.28.3.337] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/30/2019] [Accepted: 06/05/2019] [Indexed: 12/12/2022] Open
Abstract
A number of specific genetic variants including gene mutations and single nucleotide variations have been identified in genomewide association studies of autism spectrum disorder (ASD). ASD phenotypes in individuals carrying specific genetic variations are manifest mostly in a heterozygous state. Furthermore, individuals with most genetic variants show incomplete penetrance and phenotypic variability, suggesting that non-genetic factors are also involved in developing ASD. However, the mechanisms of how genetic and environmental factors interactively promote ASD are not clearly understood. In the present study, we investigated whether early-life stress (ELS) in D2 dopamine receptor heterozygous knockout (D2+/−) mice induces ASD-like symptoms. To address that, we exposed D2 heterozygous pups to maternal separation stress for 3 h daily for 13 days beginning on postnatal day 2. D2+/− adult mice that had experienced ELS exhibited impaired sociability in the three-chamber test and home-cage social interaction test and increased grooming behavior, whereas wildtype littermates exposed to ELS did not show those phenotypes. ELS-exposed D2+/− mice had decreased levels of BDNF, TrkB, phospho-ERK1/2 and phospho-CREB in the dorsal striatum. Administration of the TrkB agonist 7,8-dihydroxyflavone (7,8-DHF) to ELS-exposed D2+/− mice rescued the sociability deficits and repetitive behavior. In contrast, behavioral rescue by 7,8-DHF in ELS-exposed D2+/− mice was blocked when TrkB expression in the dorsal striatum was locally inhibited by the injection of TrkB-siRNA. Together, our results suggest that the interaction between ELS and defective D2 gene function promotes autistic-like behaviors by downregulating the BDNF-TrkB pathway in the dorsal striatum.
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Affiliation(s)
- Yunjin Lee
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea
| | - Pyung-Lim Han
- Department of Brain and Cognitive Sciences, Ewha Womans University, Seoul 03760, Korea.,Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
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22
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Wu Y, Xu Y, Huang X, Ye D, Han M, Wang HL. Regulatory Roles of Histone Deacetylases 1 and 2 in Pb-induced Neurotoxicity. Toxicol Sci 2019; 162:688-701. [PMID: 29301062 DOI: 10.1093/toxsci/kfx294] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Lead (Pb) prevails among the environmental hazards against human health. Although increasing evidence highlights the epigenetic roles underlying the Pb-induced neurotoxicity, the exact mechanisms concerning histone acetylation and its causative agents are still at its infancy. In the present study, the roles of histone deacetylases 1 and 2 (HDAC1/2), as well as acetylation of Lys9 on histone H3 (Ac-H3K9), in Pb-induced neurotoxicity were investigated. Pb was administered to PC12 cells at 10 μM for 24 h. And Sprague Dawley rats were chronically exposed to Pb through drinking water containing 250 ppm Pb for 2 months. Owing to Pb exposure, it indicated that HDAC2 was up-regulated accompanied by Ac-H3K9 down-regulation. Meanwhile, chromatin immunoprecipitation assay revealed that the changes in HDAC2 were attributed to histone H3 Lys27 trimethylation occupancy on its promoter. Blockade of HDAC2 with either Trichostatin A or HDAC2-knocking down construct (shHDAC2) resulted in amelioration of neurite outgrowth deficits via increasing Ac-H3K9 levels. It implied that HDAC2 plays essential regulatory roles in Pb-induced neurotoxicity. And, coimmunoprecipitation trials revealed that HDAC2 colocalized with HDAC1, forming a so-called HDAC1/2 complex. Subsequently, it was shown that HDAC1/2 repression could markedly prevent neurite outgrowth impairment and rescue the spatial memory deficits caused by Pb exposure, unequivocally implicating this complex in the studied toxicological process. Furthermore, Notch2 maybe the functional target of the HDAC1/2 and Ac-H3K9 alterations. Our study provided insight into the precise roles of HDAC1/2 in Pb-induced neurotoxicity, and thereby provided a promising molecular target for medical intervention of neurological disorders with environmental etiology.
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Affiliation(s)
- Yulan Wu
- School of Food Science and Engineering, Hefei University of Technology, Hefei, Anhui Province 230009, PR China
| | - Yi Xu
- School of Food Science and Engineering, Hefei University of Technology, Hefei, Anhui Province 230009, PR China
| | - Xiyao Huang
- School of Food Science and Engineering, Hefei University of Technology, Hefei, Anhui Province 230009, PR China
| | - Danlei Ye
- School of Food Science and Engineering, Hefei University of Technology, Hefei, Anhui Province 230009, PR China
| | - Miaomiao Han
- School of Food Science and Engineering, Hefei University of Technology, Hefei, Anhui Province 230009, PR China
| | - Hui-Li Wang
- School of Food Science and Engineering, Hefei University of Technology, Hefei, Anhui Province 230009, PR China
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23
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Wood J, LaPalombara Z, Ahmari SE. Monoamine abnormalities in the SAPAP3 knockout model of obsessive-compulsive disorder-related behaviour. Philos Trans R Soc Lond B Biol Sci 2019; 373:rstb.2017.0023. [PMID: 29352023 DOI: 10.1098/rstb.2017.0023] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/14/2017] [Indexed: 01/05/2023] Open
Abstract
Obsessive-compulsive disorder (OCD) is a leading cause of illness-related disability, but the neural mechanisms underlying OCD symptoms are unclear. One potential mechanism of OCD pathology is monoamine dysregulation. Because of the difficulty of studying monoamine signalling in patients, animal models offer a viable alternative to understanding this aspect of OCD pathophysiology. We used HPLC to characterize post-mortem monoamine levels in lateral orbitofrontal cortex (OFC), medial OFC, medial prefrontal cortex and dorsal and ventral striatum of SAPAP-3 knockout (KO) mice, a well-validated model of compulsive-like behaviours in OCD. As predicted from previous studies, excessive grooming was significantly increased in SAPAP-3 KO mice. Overall levels of the serotonin metabolite 5-hydroxyindoleacetic acid (HIAA) and the ratio of 5HIAA/serotonin (serotonin turnover) were increased in all cortical and striatal regions examined. In addition, dihydroxyphenylacetic acid/dopamine ratio was increased in lateral OFC, and HVA/dopamine ratio was increased in lateral and medial OFC. No baseline differences in serotonin or dopamine tissue content were observed. These data provide evidence of monoaminergic dysregulation in a translational model of OCD symptoms and are consistent with aberrant cortical and striatal serotonin and dopamine release/metabolism in SAPAP-3 KO mice. These results are guiding ongoing experiments using circuit and cell-type specific manipulations of dopamine and serotonin to determine the contributions of these monoaminergic systems to compulsive behaviours, and serve here as a touchstone for an expanded discussion of these techniques for precise circuit dissection.This article is part of the discussion meeting issue 'Of mice and mental health: facilitating dialogue between basic and clinical neuroscientists'.
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Affiliation(s)
- Jesse Wood
- Department of Psychiatry, Translational Neuroscience Program, University of Pittsburgh, 450 Technology Drive, Room 227, Pittsburgh, PA 15219, USA.,Center for Neuroscience Program and Center for the Neural Basis of Cognition, University of Pittsburgh, 450 Technology Drive, Room 227, Pittsburgh, PA 15219, USA
| | - Zoe LaPalombara
- Department of Psychiatry, Translational Neuroscience Program, University of Pittsburgh, 450 Technology Drive, Room 227, Pittsburgh, PA 15219, USA.,Center for Neuroscience Program and Center for the Neural Basis of Cognition, University of Pittsburgh, 450 Technology Drive, Room 227, Pittsburgh, PA 15219, USA
| | - Susanne E Ahmari
- Department of Psychiatry, Translational Neuroscience Program, University of Pittsburgh, 450 Technology Drive, Room 227, Pittsburgh, PA 15219, USA .,Center for Neuroscience Program and Center for the Neural Basis of Cognition, University of Pittsburgh, 450 Technology Drive, Room 227, Pittsburgh, PA 15219, USA
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24
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MeCP2 as an Activator of Gene Expression. Trends Neurosci 2018; 41:72-74. [PMID: 29405930 DOI: 10.1016/j.tins.2017.11.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 11/21/2017] [Indexed: 11/27/2022]
Abstract
Rett syndrome is a neurodevelopmental disorder that primarily affects females and is caused by mutations in the methyl-CpG-binding-protein 2 (MECP2) gene. Initially, MeCP2 had been shown to be a repressor of gene transcription. In their 2008 paper, Chahrour and colleagues (DOI: 10.1126/science.1153252) reported that MeCP2 could also function as a transcriptional activator.
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25
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Manning EE, Ahmari SE. How can preclinical mouse models be used to gain insight into prefrontal cortex dysfunction in obsessive-compulsive disorder? Brain Neurosci Adv 2018; 2:2398212818783896. [PMID: 32166143 PMCID: PMC7058260 DOI: 10.1177/2398212818783896] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/18/2018] [Indexed: 01/09/2023] Open
Abstract
Obsessive-compulsive disorder is a debilitating psychiatric disorder that is characterised by perseverative thoughts and behaviours. Cognitive and affective disturbances play a central role in this illness, and it is therefore not surprising that clinical neuroimaging studies have demonstrated widespread alterations in prefrontal cortex functioning in patients. Preclinical mouse experimental systems provide the opportunity to gain mechanistic insight into the neurobiological changes underlying prefrontal cortex dysfunction through new technologies that allow measurement and manipulation of activity in discrete neural populations in awake, behaving mice. However, recent preclinical research has focused on striatal dysfunction, and has therefore provided relatively little insight regarding the role of the prefrontal cortex in obsessive-compulsive disorder–relevant behaviours. Here, we will discuss a number of translational prefrontal cortex–dependent paradigms, including obsessive-compulsive disorder–relevant tasks that produce compulsive responding, and how they can be leveraged in this context. Drawing on recent examples that have led to mechanistic insight about specific genes, cell types and circuits that mediate prefrontal cortex contributions to distinct aspects of cognition, we will provide a framework for applying similar strategies to identify neural mechanisms underlying obsessive-compulsive disorder–relevant behavioural domains. We propose that research using clinically relevant paradigms will accelerate translation of findings from preclinical mouse models, thus supporting the development of novel therapeutics targeted to specific pathophysiological mechanisms.
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Affiliation(s)
| | - Susanne E Ahmari
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, USA
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26
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Sobolewski M, Varma G, Adams B, Anderson DW, Schneider JS, Cory-Slechta DA. Developmental Lead Exposure and Prenatal Stress Result in Sex-Specific Reprograming of Adult Stress Physiology and Epigenetic Profiles in Brain. Toxicol Sci 2018; 163:478-489. [PMID: 29481626 PMCID: PMC5974781 DOI: 10.1093/toxsci/kfy046] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Developmental exposure to lead (Pb) and prenatal stress (PS) both impair cognition, which could derive from their joint targeting of the hypothalamic-pituitary-adrenal axis and the brain mesocorticolimbic (MESO) system, including frontal cortex (FC) and hippocampus (HIPP). Glucocorticoids modulate both FC and HIPP function and associated mediation of cognitive and other behavioral functions. This study sought to determine whether developmental Pb ± PS exposures altered glucocorticoid-related epigenetic profiles in brain MESO regions in offspring of female mice exposed to 0 or 100 ppm Pb acetate drinking water from 2 mos prior to breeding until weaning, with half further exposed to prenatal restraint stress from gestational day 11-18. Overall, changes in females occured in response to Pb exposure. In males, however, Pb-induced neurotoxicity was modulated by PS. Changes in serum corticosterone levels were seen in males, while glucocorticoid receptor changes were seen in both sexes. In contrast, both Pb and PS broadly impacted brain DNA methyltransferases and binding proteins, particularly DNMT1, DNMT3a and methyl-CpG-binding protein 2, with patterns that differed by sex and brain regions. Specifically, in males, effects on FC epigenetic modifiers were primarily influenced by Pb, whereas extensive changes in HIPP were produced by PS. In females, Pb exposure and not PS primarily altered epigenetic modifiers in both FC and HIPP. Collectively, these findings indicate that epigenetic mechanisms may underlie associated neurotoxicity of Pb and of PS, particularly associated cognitive deficits. However, mechanisms by which this may occur will be different in males versus females.
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Affiliation(s)
- Marissa Sobolewski
- Department of Environmental Medicine, University of Rochester School of Medicine, Rochester, New York,To whom correspondence should be addressed at Department of Environmental Medicine, University of Rochester School of Medicine, University of Rochester Medical Center, Box EHSC, Rochester, NY 14642. Fax: 585-256-2591; E-mail:
| | - Garima Varma
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Beth Adams
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - David W Anderson
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Jay S Schneider
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Deborah A Cory-Slechta
- Department of Environmental Medicine, University of Rochester School of Medicine, Rochester, New York
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27
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Yagasaki Y, Miyoshi G, Miyata M. Experience-dependent MeCP2 expression in the excitatory cells of mouse visual thalamus. PLoS One 2018; 13:e0198268. [PMID: 29847590 PMCID: PMC5976183 DOI: 10.1371/journal.pone.0198268] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 05/16/2018] [Indexed: 02/07/2023] Open
Abstract
Loss or gain of copy number of the gene encoding the transcription factor methyl-CpG-binding protein 2 (MeCP2) leads to neurodevelopmental disorders (Rett and MeCP2 duplication syndrome), indicating that precisely regulated MeCP2 expression during development is critical for mental health. Consistent with this idea, MeCP2 null mutants exhibit synaptic regression in the dorsal lateral geniculate nucleus (dLGN), the visual relay center in the thalamus, a phenotype resembling that of animals reared in the dark during the visual sensitive period. It remains unclear how MeCP2 expression is regulated during circuit formation and maturation, especially in excitatory and inhibitory populations of neurons. We found that, concomitant with the initiation of the dark-rearing sensitive period, MeCP2 protein levels were elevated in glutamatergic but not GABAergic neurons of the dLGN. Moreover, MeCP2 expression in glutamatergic populations was selectively reduced by dark-rearing. Therefore, we propose that visual experience-dependent MeCP2 induction in glutamatergic populations is essential for synaptic maturation within the dLGN.
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Affiliation(s)
- Yuki Yagasaki
- Department of Physiology I (Neurophysiology), Tokyo Women’s Medical University, School of Medicine, 8–1 Kawada-cho, Shinjuku-ku, Tokyo, Japan
- Division of Women Health Care Professionals and Researchers Support, Tokyo Women’s Medical University, 8–1 Kawada-cho, Shinjuku-ku, Tokyo, Japan
| | - Goichi Miyoshi
- Department of Physiology I (Neurophysiology), Tokyo Women’s Medical University, School of Medicine, 8–1 Kawada-cho, Shinjuku-ku, Tokyo, Japan
| | - Mariko Miyata
- Department of Physiology I (Neurophysiology), Tokyo Women’s Medical University, School of Medicine, 8–1 Kawada-cho, Shinjuku-ku, Tokyo, Japan
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28
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Golden CE, Buxbaum JD, De Rubeis S. Disrupted circuits in mouse models of autism spectrum disorder and intellectual disability. Curr Opin Neurobiol 2018; 48:106-112. [PMID: 29222989 PMCID: PMC5825272 DOI: 10.1016/j.conb.2017.11.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 11/01/2017] [Accepted: 11/14/2017] [Indexed: 01/28/2023]
Abstract
Autism spectrum disorder (ASD) and intellectual disability (ID) are caused by a wide range of genetic mutations, a significant fraction of which reside in genes important for synaptic function. Studies have found that sensory, prefrontal, hippocampal, cerebellar, and striatal regions, as well as the circuits that connect them, are perturbed in mouse models of ASD and ID. Dissecting the disruptions in morphology and activity in these neural circuits might help us to understand the shared risk between the two disorders as well as their clinical heterogeneity. Treatments that target the balance between excitation and inhibition in these regions are able to reverse pathological phenotypes, elucidating this deficit as a commonality across models and opening new avenues for intervention.
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Affiliation(s)
- Carla Em Golden
- Seaver Autism Center for Research and Treatment, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA; Department of Psychiatry, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA; Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA
| | - Joseph D Buxbaum
- Seaver Autism Center for Research and Treatment, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA; Department of Psychiatry, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA; Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA; Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA; The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA
| | - Silvia De Rubeis
- Seaver Autism Center for Research and Treatment, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA; Department of Psychiatry, Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, 10029 NY, USA.
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29
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Xie L, Mao M, Xiong K, Jiang B. Circular RNAs: A Novel Player in Development and Disease of the Central Nervous System. Front Cell Neurosci 2017; 11:354. [PMID: 29167634 PMCID: PMC5682331 DOI: 10.3389/fncel.2017.00354] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 10/25/2017] [Indexed: 01/09/2023] Open
Abstract
Circular RNAs (circRNAs) own unique capabilities to communicate with nucleic acids and ribonucleoproteins and are emerging as indispensable compositions of the regulatory messages encoded in the genome. Due to lack of 3′ termini, circRNAs are more resistant to degradation by exonuclease RNase R and possess greater stability than linear RNAs. Moreover, circRNAs can act as microRNA (miRNA) sponge and affect messenger RNA (mRNA) splicing and transcription. By virtue of their great stability and elaborate regulatory mechanisms of gene expression, circRNAs play important roles in certain physiological activities. The development, homeostasis and stress response of the central nervous system (CNS) depend upon precise temporal and spatial regulation of gene networks. Moreover, emerging evidence has revealed that circRNAs are spatiotemporally regulated and dynamically expressed during brain development; therefore, they can exert significant influences on CNS development and diseases. In this review, we highlight the biogenesis of circRNAs and their central roles in regulation of CNS development and diseases.
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Affiliation(s)
- Lili Xie
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Mao Mao
- Departments of Ophthalmology and Anatomy, Institute for Human Genetics, UCSF School of Medicine, San Francisco, CA, United States
| | - Kun Xiong
- Department of Human Anatomy and Neurobiology, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Bing Jiang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
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30
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Na ES, De Jesús-Cortés H, Martinez-Rivera A, Kabir ZD, Wang J, Ramesh V, Onder Y, Rajadhyaksha AM, Monteggia LM, Pieper AA. D-cycloserine improves synaptic transmission in an animal model of Rett syndrome. PLoS One 2017; 12:e0183026. [PMID: 28813484 PMCID: PMC5559075 DOI: 10.1371/journal.pone.0183026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 07/30/2017] [Indexed: 01/24/2023] Open
Abstract
Rett syndrome (RTT), a leading cause of intellectual disability in girls, is predominantly caused by mutations in the X-linked gene MECP2. Disruption of Mecp2 in mice recapitulates major features of RTT, including neurobehavioral abnormalities, which can be reversed by re-expression of normal Mecp2. Thus, there is reason to believe that RTT could be amenable to therapeutic intervention throughout the lifespan of patients after the onset of symptoms. A common feature underlying neuropsychiatric disorders, including RTT, is altered synaptic function in the brain. Here, we show that Mecp2tm1.1Jae/y mice display lower presynaptic function as assessed by paired pulse ratio, as well as decreased long term potentiation (LTP) at hippocampal Schaffer–collateral-CA1 synapses. Treatment of Mecp2tm1.1Jae/y mice with D-cycloserine (DCS), an FDA-approved analog of the amino acid D-alanine with antibiotic and glycinergic activity, corrected the presynaptic but not LTP deficit without affecting deficient hippocampal BDNF levels. DCS treatment did, however, partially restore lower BDNF levels in the brain stem and striatum. Thus, treatment with DCS may mitigate the severity of some of the neurobehavioral symptoms experienced by patients with Rett syndrome.
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Affiliation(s)
- Elisa S. Na
- Department of Psychology & Philosophy, Texas Woman’s University, Denton, TX, United States of America
| | - Héctor De Jesús-Cortés
- Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, MA, United States of America
| | - Arlene Martinez-Rivera
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, Cornell University, New York, NY, United States of America
- Weill Cornell Autism Research Program, Weill Cornell Medicine, Cornell University, New York, NY, United States of America
| | - Zeeba D. Kabir
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, Cornell University, New York, NY, United States of America
- Weill Cornell Autism Research Program, Weill Cornell Medicine, Cornell University, New York, NY, United States of America
| | - Jieqi Wang
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, United States of America
| | - Vijayashree Ramesh
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX, United States of America
| | - Yasemin Onder
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX, United States of America
| | - Anjali M. Rajadhyaksha
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, Cornell University, New York, NY, United States of America
- Weill Cornell Autism Research Program, Weill Cornell Medicine, Cornell University, New York, NY, United States of America
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, Cornell University, New York, NY, United States of America
- * E-mail: (AMR); (LMM); (AAP)
| | - Lisa M. Monteggia
- Department of Neuroscience, UT Southwestern Medical Center, Dallas, TX, United States of America
- * E-mail: (AMR); (LMM); (AAP)
| | - Andrew A. Pieper
- Weill Cornell Autism Research Program, Weill Cornell Medicine, Cornell University, New York, NY, United States of America
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, United States of America
- Department of Neurology, University of Iowa Carver College of Medicine, Iowa City, IA, United States of America
- Department of Free Radical and Radiation Biology, University of Iowa Carver College of Medicine, Iowa City, IA, United States of America
- Department of Veterans Affairs, University of Iowa Carver College of Medicine, Iowa City, IA, United States of America
- Pappajohn Biomedical Institute, University of Iowa Carver College of Medicine, Iowa City, IA, United States of America
- * E-mail: (AMR); (LMM); (AAP)
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31
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van den Boom BJG, Pavlidi P, Wolf CJH, Mooij AH, Willuhn I. Automated classification of self-grooming in mice using open-source software. J Neurosci Methods 2017. [PMID: 28648717 DOI: 10.1016/j.jneumeth.2017.05.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Manual analysis of behavior is labor intensive and subject to inter-rater variability. Although considerable progress in automation of analysis has been made, complex behavior such as grooming still lacks satisfactory automated quantification. NEW METHOD We trained a freely available, automated classifier, Janelia Automatic Animal Behavior Annotator (JAABA), to quantify self-grooming duration and number of bouts based on video recordings of SAPAP3 knockout mice (a mouse line that self-grooms excessively) and wild-type animals. RESULTS We compared the JAABA classifier with human expert observers to test its ability to measure self-grooming in three scenarios: mice in an open field, mice on an elevated plus-maze, and tethered mice in an open field. In each scenario, the classifier identified both grooming and non-grooming with great accuracy and correlated highly with results obtained by human observers. Consistently, the JAABA classifier confirmed previous reports of excessive grooming in SAPAP3 knockout mice. COMPARISON WITH EXISTING METHODS Thus far, manual analysis was regarded as the only valid quantification method for self-grooming. We demonstrate that the JAABA classifier is a valid and reliable scoring tool, more cost-efficient than manual scoring, easy to use, requires minimal effort, provides high throughput, and prevents inter-rater variability. CONCLUSION We introduce the JAABA classifier as an efficient analysis tool for the assessment of rodent self-grooming with expert quality. In our "how-to" instructions, we provide all information necessary to implement behavioral classification with JAABA.
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Affiliation(s)
- Bastijn J G van den Boom
- Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands; Department of Psychiatry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Pavlina Pavlidi
- Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
| | - Casper J H Wolf
- Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
| | - Adriana H Mooij
- Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
| | - Ingo Willuhn
- Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands; Department of Psychiatry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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