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Laricchiuta D, Gimenez J, Sciamanna G, Termine A, Fabrizio C, Della Valle F, Caioli S, Saba L, De Bardi M, Balsamo F, Panuccio A, Passarello N, Mattioni A, Bisicchia E, Zona C, Orlando V, Petrosini L. Synaptic and transcriptomic features of cortical and amygdala pyramidal neurons predict inefficient fear extinction. Cell Rep 2023; 42:113066. [PMID: 37656620 DOI: 10.1016/j.celrep.2023.113066] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 04/08/2023] [Accepted: 08/17/2023] [Indexed: 09/03/2023] Open
Abstract
Fear-related disorders arise from inefficient fear extinction and have immeasurable social and economic costs. Here, we characterize mouse phenotypes that spontaneously show fear-independent behavioral traits predicting adaptive or maladaptive fear extinction. We find that, already before fear conditioning, specific morphological, electrophysiological, and transcriptomic patterns of cortical and amygdala pyramidal neurons predispose to fear-related disorders. Finally, by using an optogenetic approach, we show the possibility to rescue inefficient fear extinction by activating infralimbic pyramidal neurons and to impair fear extinction by activating prelimbic pyramidal neurons.
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Affiliation(s)
| | | | - Giuseppe Sciamanna
- IRCCS Santa Lucia Foundation, 00143 Rome, Italy; Saint Camillus International University of Health and Medical Sciences, 00131 Rome, Italy
| | | | | | - Francesco Della Valle
- King Abdullah University of Science and Technology (KAUST), Biological Environmental Science and Engineering Division, KAUST Environmental Epigenetics Program, Thuwal 23955-6900, Saudi Arabia
| | - Silvia Caioli
- Unit of Neurology, IRCCS Neuromed, 86077 Pozzilli, Isernia, Italy
| | - Luana Saba
- University of Campus Biomedico, 00128 Rome, Italy
| | | | - Francesca Balsamo
- IRCCS Santa Lucia Foundation, 00143 Rome, Italy; Department of Human Sciences, Guglielmo Marconi University, 00166 Rome, Italy
| | - Anna Panuccio
- IRCCS Santa Lucia Foundation, 00143 Rome, Italy; Department of Psychology, University Sapienza of Rome, 00185 Rome, Italy
| | - Noemi Passarello
- IRCCS Santa Lucia Foundation, 00143 Rome, Italy; Department of Humanities, Federico II University of Naples, 80138 Naples, Italy
| | | | | | - Cristina Zona
- Department of Systems Medicine, Tor Vergata University of Rome, 00133 Rome, Italy
| | - Valerio Orlando
- King Abdullah University of Science and Technology (KAUST), Biological Environmental Science and Engineering Division, KAUST Environmental Epigenetics Program, Thuwal 23955-6900, Saudi Arabia.
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2
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Calpe-López C, Martínez-Caballero MÁ, García-Pardo MP, Aguilar MA. Resilience to the short- and long-term behavioral effects of intermittent repeated social defeat in adolescent male mice. Pharmacol Biochem Behav 2023:173574. [PMID: 37315696 DOI: 10.1016/j.pbb.2023.173574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/16/2023] [Accepted: 06/03/2023] [Indexed: 06/16/2023]
Abstract
BACKGROUND Exposure to intermittent repeated social defeat (IRSD) increases the sensitivity of mice to the rewarding effects of cocaine in the conditioned place preference (CPP) paradigm. Some animals are resilient to this effect of IRSD, though research exploring this inconsistency in adolescent mice is scarce. Thus, our aim was to characterize the behavioral profile of mice exposed to IRSD during early adolescence and to explore a potential association with resilience to the short- and long-term effects of IRSD. METHODS Thirty-six male C57BL/6 mice were exposed to IRSD during early adolescence (PND 27, 30, 33 and 36), while another 10 male mice did not undergo stress (controls). Defeated mice and controls then carried out the following battery of behavioral tests; the Elevated Plus Maze, Hole-Board and Social Interaction Test on PND 37, and the Tail Suspension and Splash tests on PND 38. Three weeks later, all the mice were submitted to the CPP paradigm with a low dose of cocaine (1.5 mg/kg). RESULTS IRSD during early adolescence induced depressive-like behavior in the Social Interaction and Splash tests and increased the rewarding effects of cocaine. Mice with low levels of submissive behavior during episodes of defeat were resilient to the short- and long-term effects of IRSD. In addition, resilience to the short-term effects of IRSD on social interaction and grooming behavior predicted resilience to the long-term effects of IRSD on cocaine reward. CONCLUSION Our findings help to characterize the nature of resilience to the effects of social stress during adolescence.
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Affiliation(s)
- Claudia Calpe-López
- Neurobehavioural Mechanisms and Endophenotypes of Addictive Behavior Research Unit, Department of Psychobiology, University of Valencia, Valencia, Spain
| | - Maria Ángeles Martínez-Caballero
- Neurobehavioural Mechanisms and Endophenotypes of Addictive Behavior Research Unit, Department of Psychobiology, University of Valencia, Valencia, Spain
| | - Maria Pilar García-Pardo
- Department of Psychology and Sociology, Faculty of Social Sciences, University of Zaragoza, Teruel, Spain
| | - Maria Asunción Aguilar
- Neurobehavioural Mechanisms and Endophenotypes of Addictive Behavior Research Unit, Department of Psychobiology, University of Valencia, Valencia, Spain.
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Cheng J, He Z, Chen Q, Lin J, Peng Y, Zhang J, Yan X, Yan J, Niu S. Histone modifications in cocaine, methamphetamine and opioids. Heliyon 2023; 9:e16407. [PMID: 37265630 PMCID: PMC10230207 DOI: 10.1016/j.heliyon.2023.e16407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/16/2023] [Indexed: 06/03/2023] Open
Abstract
Cocaine, methamphetamine and opioids are leading causes of drug abuse-related deaths worldwide. In recent decades, several studies revealed the connection between and epigenetics. Neural cells acquire epigenetic alterations that drive the onset and progress of the SUD by modifying the histone residues in brain reward circuitry. Histone modifications, especially acetylation and methylation, participate in the regulation of gene expression. These alterations, as well as other host and microenvironment factors, are associated with a serious of negative neurocognitive disfunctions in various patient populations. In this review, we highlight the evidence that substantially increase the field's ability to understand the molecular actions underlying SUD and summarize the potential approaches for SUD pharmacotherapy.
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Affiliation(s)
- Junzhe Cheng
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China
- Clinical Medicine Eight-Year Program, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Ziping He
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China
- Clinical Medicine Eight-Year Program, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Qianqian Chen
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China
| | - Jiang Lin
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China
| | - Yilin Peng
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China
| | - Jinlong Zhang
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China
- Department of Human Anatomy, School of Basic Medical Science, Xinjiang Medical University, Urumqi, 830001, China
| | - Xisheng Yan
- Department of Cardiovascular Medicine, Wuhan Third Hospital & Tongren Hospital of Wuhan University, Wuhan, Hubei Province, 430074, China
| | - Jie Yan
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China
- Department of Human Anatomy, School of Basic Medical Science, Xinjiang Medical University, Urumqi, 830001, China
| | - Shuliang Niu
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan, 410013, China
- Department of Human Anatomy, School of Basic Medical Science, Xinjiang Medical University, Urumqi, 830001, China
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Perrine SA, Alsharif WF, Harutyunyan A, Kamal S, Viola NT, Gelovani JG. Low- and high-cocaine intake affects the spatial and temporal dynamics of class IIa HDAC expression-activity in the nucleus accumbens and hippocampus of male rats as measured by [18F]TFAHA PET/CT neuroimaging. ADDICTION NEUROSCIENCE 2022; 4:100046. [PMID: 36540409 PMCID: PMC9762729 DOI: 10.1016/j.addicn.2022.100046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Repeated cocaine alters neuronal function in the nucleus accumbens (NAc), a brain region involved in cocaine taking, and in hippocampus (HC), known for contextual and associative learning. [18F]TFAHA is a histone deacetylase (HDAC) class IIa-specific radiotracer for positron emission tomography (PET)-imaging developed by our group to study epigenetic mechanisms. Here, [18F]TFAHA was used to conduct PET-imaging coupled with computed tomography (CT) of rat brains at baseline and after repeated cocaine intravenous self-administration (cocaine-IVSA) in low-intake versus high-intake cocaine groups. A 3 h-access FR1-schedule of cocaine-IVSA (0.5 mg/kg/infusion) for 12 continuous days was used with male Sprague Dawley rats following jugular vein catheterization. PET/CT neuroimaging with [18F]TFAHA was acquired in a dynamic mode over 40 min post-radiotracer administration at baseline and on day 12 of cocaine-IVSA using a longitudinal, repeated design. This study shows that high-cocaine intake significantly decreases class IIa HDAC expression-activity in NAc, while low-cocaine intake significantly decreases expression-activity in HC in male rats. These findings suggest the individual rats with low-cocaine intake had epigenetic changes in HC, where drug-associative changes occur. Alternatively, individuals with high-cocaine intake had robust epigenetic changes in NAc, where rewared-related behaviors originate. These findings are the first longitudinal data obtained in vivo to implicate class IIa HDACs in the persistent behavioral effects of cocaine. Furthermore, our results are consistent with published research implicating class IIa HDACs in cocaine-induced brain changes and studies suggesting a relationship between an individual's drug-taking behavior and regional pattern of epigenetic changes in the brain.
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Affiliation(s)
- Shane A. Perrine
- Psychiatry and Behavioral Neurosciences, Wayne State University, 6135 Woodward Avenue, Suite 3119, Detroit, MI, USA
- Research Services, John D. Dingell VAMC, Detroit, MI, USA
| | | | - Arman Harutyunyan
- Psychiatry and Behavioral Neurosciences, Wayne State University, 6135 Woodward Avenue, Suite 3119, Detroit, MI, USA
| | - Swatabdi Kamal
- Biomedical Engineering, Wayne State University, Detroit, MI, USA
| | - Nerissa T. Viola
- Oncology, Wayne State University, Detroit, MI, USA
- Karmanos Cancer Institute, Detroit, MI, USA
| | - Juri G. Gelovani
- Biomedical Engineering, Wayne State University, Detroit, MI, USA
- Karmanos Cancer Institute, Detroit, MI, USA
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Cheng Z, Su J, Zhang K, Jiang H, Li B. Epigenetic Mechanism of Early Life Stress-Induced Depression: Focus on the Neurotransmitter Systems. Front Cell Dev Biol 2022; 10:929732. [PMID: 35865627 PMCID: PMC9294154 DOI: 10.3389/fcell.2022.929732] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 05/31/2022] [Indexed: 11/13/2022] Open
Abstract
Depression has an alarmingly high prevalence worldwide. A growing body of evidence indicates that environmental factors significantly affect the neural development and function of the central nervous system and then induce psychiatric disorders. Early life stress (ELS) affects brain development and has been identified as a major cause of depression. It could promote susceptibility to stress in adulthood. Recent studies have found that ELS induces epigenetic changes that subsequently affect transcriptional rates of differentially expressed genes. The epigenetic modifications involved in ELS include histone modifications, DNA methylation, and non-coding RNA. Understanding of these genetic modifications may identify mechanisms that may lead to new interventions for the treatment of depression. Many reports indicate that different types of ELS induce epigenetic modifications of genes involved in the neurotransmitter systems, such as the dopaminergic system, the serotonergic system, the gamma-aminobutyric acid (GABA)-ergic system, and the glutamatergic system, which further regulate gene expression and ultimately induce depression-like behaviors. In this article, we review the effects of epigenetic modifications on the neurotransmitter systems in depression-like outcomes produced by different types of ELS in recent years, aiming to provide new therapeutic targets for patients who suffer from depression.
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Affiliation(s)
- Ziqian Cheng
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun, China
- Engineering Lab on Screening of Antidepressant Drugs, Jilin Province Development and Reform Commission, Changchun, China
| | - Jingyun Su
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun, China
- Engineering Lab on Screening of Antidepressant Drugs, Jilin Province Development and Reform Commission, Changchun, China
| | - Kai Zhang
- Central Laboratory, The Second Hospital of Jilin University, Jilin University, Changchun, China
| | - Huiyi Jiang
- Department of Pediatrics, The First Hospital of Jilin University, Changchun, China
- *Correspondence: Huiyi Jiang, ; Bingjin Li,
| | - Bingjin Li
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun, China
- Engineering Lab on Screening of Antidepressant Drugs, Jilin Province Development and Reform Commission, Changchun, China
- *Correspondence: Huiyi Jiang, ; Bingjin Li,
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Catale C, Lo Iacono L, Martini A, Heil C, Guatteo E, Mercuri NB, Viscomi MT, Palacios D, Carola V. Early Life Social Stress Causes Sex- and Region-Dependent Dopaminergic Changes that Are Prevented by Minocycline. Mol Neurobiol 2022; 59:3913-3932. [PMID: 35435618 PMCID: PMC9148283 DOI: 10.1007/s12035-022-02830-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 04/02/2022] [Indexed: 02/03/2023]
Abstract
Early life stress (ELS) is known to modify trajectories of brain dopaminergic development, but the mechanisms underlying have not been determined. ELS perturbs immune system and microglia reactivity, and inflammation and microglia influence dopaminergic transmission and development. Whether microglia mediate the effects of ELS on dopamine (DA) system development is still unknown. We explored the effects of repeated early social stress on development of the dopaminergic system in male and female mice through histological, electrophysiological, and transcriptomic analyses. Furthermore, we tested whether these effects could be mediated by ELS-induced altered microglia/immune activity through a pharmacological approach. We found that social stress in early life altered DA neurons morphology, reduced dopamine transporter (DAT) and tyrosine hydroxylase expression, and lowered DAT-mediated currents in the ventral tegmental area but not substantia nigra of male mice only. Notably, stress-induced DA alterations were prevented by minocycline, an inhibitor of microglia activation. Transcriptome analysis in the developing male ventral tegmental area revealed that ELS caused downregulation of dopaminergic transmission and alteration in hormonal and peptide signaling pathways. Results from this study offer new insight into the mechanisms of stress response and altered brain dopaminergic maturation after ELS, providing evidence of neuroimmune interaction, sex differences, and regional specificity.
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Affiliation(s)
- Clarissa Catale
- Division of Experimental Neuroscience, Neurobiology of Behavior Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy
| | - Luisa Lo Iacono
- Department of Dynamic and Clinical Psychology, and Health Studies, Sapienza University of Rome, Via degli Apuli 1, Rome, Italy
| | - Alessandro Martini
- Division of Experimental Neuroscience, Experimental Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy
| | - Constantin Heil
- Division of Experimental Neuroscience, Epigenetics and Signal Transduction Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy
| | - Ezia Guatteo
- Division of Experimental Neuroscience, Experimental Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy
- Department of Motor Science and Wellness, University of Naples Parthenope, Naples, Italy
| | - Nicola Biagio Mercuri
- Division of Experimental Neuroscience, Experimental Neurology Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy
- Department of Systems Medicine, Università Degli Studi Di Roma Tor Vergata, Rome, Italy
| | - Maria Teresa Viscomi
- Department of Life Science and Public Health, Section of Histology and Embryology, Università Cattolica Del S. Cuore, Rome, Italy
- IRCCS Fondazione Policlinico Universitario A. Gemelli, Rome, Italy
| | - Daniela Palacios
- Division of Experimental Neuroscience, Epigenetics and Signal Transduction Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy
- IRCCS Fondazione Policlinico Universitario A. Gemelli, Rome, Italy
- Department of Life Science and Public Health, Section of Biology, Università Cattolica Del S. Cuore, Rome, Italy
| | - Valeria Carola
- Division of Experimental Neuroscience, Neurobiology of Behavior Laboratory, IRCCS Santa Lucia Foundation, Rome, Italy.
- Department of Dynamic and Clinical Psychology, and Health Studies, Sapienza University of Rome, Via degli Apuli 1, Rome, Italy.
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Histone Deacetylases and Immediate Early Genes: Key Players in Psychostimulant-Induced Neuronal Plasticity. Neurotox Res 2021; 39:2134-2140. [PMID: 34581974 DOI: 10.1007/s12640-021-00420-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/13/2021] [Accepted: 09/17/2021] [Indexed: 11/27/2022]
Abstract
IEGs play a critical functional role of in molecular, cellular, and behavioral alterations induced by psychostimulants. IEGs appear to have specific chromatin structures that may contribute to the rapid activation of their transcription. HDAC enzymes regulate reversible acetylation of lysine residues of histones and non-histone proteins. Dysregulation of HDACs has been proposed to modulate the establishment and maintenance of aberrant transcriptional programs and behaviors associated with cognitive dysfunctions and drug addiction. In this mini-review we focus our attention on recent discoveries concerning networks of protein-protein interactions for the two classes of HDAC protein family members that are highly expressed in neurons, class I and IIa HDACs. Because dynamic histone acetylation appears to be critical to IEG expression in the brain, we discuss the role of these epigenetic regulators on IEG expression induced by cocaine and methamphetamine intake.
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Brancolini C, Di Giorgio E, Formisano L, Gagliano T. Quis Custodiet Ipsos Custodes (Who Controls the Controllers)? Two Decades of Studies on HDAC9. Life (Basel) 2021; 11:life11020090. [PMID: 33513699 PMCID: PMC7912504 DOI: 10.3390/life11020090] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 01/20/2021] [Accepted: 01/24/2021] [Indexed: 12/21/2022] Open
Abstract
Understanding how an epigenetic regulator drives different cellular responses can be a tricky task. Very often, their activities are modulated by large multiprotein complexes, the composition of which is context- and time-dependent. As a consequence, experiments aimed to unveil the functions of an epigenetic regulator can provide different outcomes and conclusions, depending on the circumstances. HDAC9 (histone deacetylase), an epigenetic regulator that influences different differentiating and adaptive responses, makes no exception. Since its discovery, different phenotypes and/or dysfunctions have been observed after the artificial manipulation of its expression. The cells and the microenvironment use multiple strategies to control and monitor HDAC9 activities. To date, some of the genes under HDAC9 control have been identified. However, the exact mechanisms through which HDAC9 can achieve all the different tasks so far described, remain mysterious. Whether it can assemble into different multiprotein complexes and how the cells modulate these complexes is not clearly defined. In summary, despite several cellular responses are known to be affected by HDAC9, many aspects of its network of interactions still remain to be defined.
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Affiliation(s)
- Claudio Brancolini
- Department of Medicine, Università degli Studi di Udine, p.le Kolbe 4, 33100 Udine, Italy; (E.D.G.); (T.G.)
- Correspondence:
| | - Eros Di Giorgio
- Department of Medicine, Università degli Studi di Udine, p.le Kolbe 4, 33100 Udine, Italy; (E.D.G.); (T.G.)
| | - Luigi Formisano
- Department of Neuroscience, School of Medicine, “Federico II” University of Naples, Via Pansini, 5, 80131 Naples, Italy;
| | - Teresa Gagliano
- Department of Medicine, Università degli Studi di Udine, p.le Kolbe 4, 33100 Udine, Italy; (E.D.G.); (T.G.)
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Agrawal P, Chung P, Heberlein U, Kent C. Enabling cell-type-specific behavioral epigenetics in Drosophila: a modified high-yield INTACT method reveals the impact of social environment on the epigenetic landscape in dopaminergic neurons. BMC Biol 2019; 17:30. [PMID: 30967153 PMCID: PMC6456965 DOI: 10.1186/s12915-019-0646-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 03/07/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Epigenetic mechanisms play fundamental roles in brain function and behavior and stressors such as social isolation can alter animal behavior via epigenetic mechanisms. However, due to cellular heterogeneity, identifying cell-type-specific epigenetic changes in the brain is challenging. Here, we report the first use of a modified isolation of nuclei tagged in specific cell type (INTACT) method in behavioral epigenetics of Drosophila melanogaster, a method we call mini-INTACT. RESULTS Using ChIP-seq on mini-INTACT purified dopaminergic nuclei, we identified epigenetic signatures in socially isolated and socially enriched Drosophila males. Social experience altered the epigenetic landscape in clusters of genes involved in transcription and neural function. Some of these alterations could be predicted by expression changes of four transcription factors and the prevalence of their binding sites in several clusters. These transcription factors were previously identified as activity-regulated genes, and their knockdown in dopaminergic neurons reduced the effects of social experience on sleep. CONCLUSIONS Our work enables the use of Drosophila as a model for cell-type-specific behavioral epigenetics and establishes that social environment shifts the epigenetic landscape in dopaminergic neurons. Four activity-related transcription factors are required in dopaminergic neurons for the effects of social environment on sleep.
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Affiliation(s)
- Pavan Agrawal
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.
| | - Phuong Chung
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA
| | - Ulrike Heberlein
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA
| | - Clement Kent
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA.
- Department of Biology, York University, Toronto, Canada.
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Lo Iacono L, Carola V. The impact of adolescent stress experiences on neurobiological development. Semin Cell Dev Biol 2018; 77:93-103. [DOI: 10.1016/j.semcdb.2017.09.040] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/18/2017] [Accepted: 09/29/2017] [Indexed: 01/23/2023]
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11
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Epigenetic mechanisms associated with addiction-related behavioural effects of nicotine and/or cocaine: implication of the endocannabinoid system. Behav Pharmacol 2018; 28:493-511. [PMID: 28704272 DOI: 10.1097/fbp.0000000000000326] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The addictive use of nicotine (NC) and cocaine (COC) continues to be a major public health problem, and their combined use has been reported, particularly during adolescence. In neural plasticity, commonly induced by NC and COC, as well as behavioural plasticity related to the use of these two drugs, the involvement of epigenetic mechanisms, in which the reversible regulation of gene expression occurs independently of the DNA sequence, has recently been reported. Furthermore, on the basis of intense interactions with the target neurotransmitter systems, the endocannabinoid (ECB) system has been considered pivotal for eliciting the effects of NC or COC. The combined use of marijuana with NC and/or COC has also been reported. This article presents the addiction-related behavioural effects of NC and/or COC, based on the common behavioural/neural plasticity and combined use of NC/COC, and reviews the interacting role of the ECB system. The epigenetic processes inseparable from the effects of NC and/or COC (i.e. DNA methylation, histone modifications and alterations in microRNAs) and the putative therapeutic involvement of the ECB system at the epigenetic level are also discussed.
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