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Martínez-Pacheco H, Zepeda RC, Picazo O, Quirarte GL, Roldán-Roldán G. Class I histone deacetylases inhibition reverses memory impairment induced by acute stress in mice. PLoS One 2024; 19:e0302374. [PMID: 38635564 PMCID: PMC11025869 DOI: 10.1371/journal.pone.0302374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 04/02/2024] [Indexed: 04/20/2024] Open
Abstract
While chronic stress induces learning and memory impairments, acute stress may facilitate or prevent memory consolidation depending on whether it occurs during the learning event or before it, respectively. On the other hand, it has been shown that histone acetylation regulates long-term memory formation. This study aimed to evaluate the effect of two inhibitors of class I histone deacetylases (HDACs), 4-phenylbutyrate (PB) and IN14 (100 mg/kg/day, ip for 2 days), on memory performance in mice exposed to a single 15-min forced swimming stress session. Plasma corticosterone levels were determined 30 minutes after acute swim stress in one group of mice. In another experimental series, independent groups of mice were trained in one of three different memory tasks: Object recognition test, Elevated T maze, and Buried food location test. Subsequently, the hippocampi were removed to perform ELISA assays for histone deacetylase 2 (HDAC2) expression. Acute stress induced an increase in plasma corticosterone levels, as well as hippocampal HDAC2 content, along with an impaired performance in memory tests. Moreover, PB and IN14 treatment prevented memory loss in stressed mice. These findings suggest that HDAC2 is involved in acute stress-induced cognitive impairment. None of the drugs improved memory in non-stressed animals, indicating that HDACs inhibitors are not cognitive boosters, but rather potentially useful drugs for mitigating memory deficits.
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Affiliation(s)
- Heidy Martínez-Pacheco
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, Juriquilla, Querétaro, México
| | | | - Ofir Picazo
- Escuela Superior de Medicina, Instituto Politécnico Nacional, Ciudad de México, México
| | - Gina L. Quirarte
- Departamento de Neurobiología Conductual y Cognitiva, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, Juriquilla, Querétaro, México
| | - Gabriel Roldán-Roldán
- Laboratorio de Neurobiología Conductual, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México
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Yu Q, Feng N, Hu Y, Luo F, Zhao W, Zhao W, Liu Z, Li M, Xu L, Wu L, Liu Y. Suberoylanilide hydroxamic acid (SAHA) alleviates the learning and memory impairment in rat offspring caused by maternal sevoflurane exposure during late gestation. J Toxicol Sci 2019; 44:177-189. [PMID: 30842370 DOI: 10.2131/jts.44.177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Recent studies have shown that sevoflurane can cause long-term neurotoxicity and learning and memory impairment in developing and progressively neurodegenerative brains. Sevoflurane is a widely used volatile anesthetic in clinical practice. Late gestation is a rapidly developing period in the fetal brain, but whether sevoflurane anesthesia during late gestation affects learning and memory of offspring is not fully elucidated. Histone deacetylase 2 (HDAC2) plays an important regulatory role in learning and memory. This study examined the effect of maternal sevoflurane exposure on learning and memory in offspring and the underlying role of HDAC2. The Morris water maze (MWM) test was used to evaluate learning and memory function. Q-PCR and immunofluorescence staining were used to measure the expression levels of genes related to learning and memory. The results showed that sevoflurane anesthesia during late gestation impaired learning and memory in offspring rats (e.g., showing increase of the escape latency and decrease of the platform-crossing times and target quadrant traveling time in behavior tests) and upregulated the expression of HDAC2, while downregulating the expression of the cyclic adenosine monophosphate (cAMP) response element binding protein (CREB) and the N-methyl-D-aspartate receptor 2 subunit B (NR2B) mRNA and protein in the hippocampus of offspring in a time-dependent manner. HDAC2 inhibitor suberoylanilide hydroxamic acid (SAHA) treatment alleviated all of these changes in offspring rats. Therefore, the present study indicates that sevoflurane exposure during late gestation impairs offspring rat's learning and memory via upregulation of the expression of HDAC2 and downregulation of the expression of CREB and NR2B. SAHA can alleviate these impairments.
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Affiliation(s)
- Qi Yu
- Department of Anesthesiology, the First Affiliated Hospital, Nanchang University, China
| | - Namin Feng
- Department of Anesthesiology, the First Affiliated Hospital, Nanchang University, China
| | - Yan Hu
- Department of Anesthesiology, Jiangxi Province Traditional Chinese Medicine Hospital, China
| | - Foquan Luo
- Department of Anesthesiology, the First Affiliated Hospital, Nanchang University, China
| | - Weihong Zhao
- Department of Anesthesiology, the First Affiliated Hospital, Nanchang University, China
| | - Weilu Zhao
- Department of Anesthesiology, the First Affiliated Hospital, Nanchang University, China
| | - Zhiyi Liu
- Department of Anesthesiology, the First Affiliated Hospital, Nanchang University, China
| | - Mengyuan Li
- Department of Anesthesiology, the First Affiliated Hospital, Nanchang University, China
| | - Lin Xu
- Department of Anesthesiology, the First Affiliated Hospital, Nanchang University, China
| | - Liuqing Wu
- Department of Anesthesiology, Jiangxi Province Tumor Hospital, China
| | - Yulin Liu
- Department of Immunology, Jiangxi Medical College, Nanchang University, China
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3
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You C, Vandegrift BJ, Zhang H, Lasek AW, Pandey SC, Brodie MS. Histone Deacetylase Inhibitor Suberanilohydroxamic Acid Treatment Reverses Hyposensitivity to γ-Aminobutyric Acid in the Ventral Tegmental Area During Ethanol Withdrawal. Alcohol Clin Exp Res 2018; 42:2160-2171. [PMID: 30103280 PMCID: PMC6214766 DOI: 10.1111/acer.13870] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 08/08/2018] [Indexed: 12/24/2022]
Abstract
Background The ventral tegmental area (VTA) is important for alcohol‐related reward and reinforcement. Mouse VTA neurons are hyposensitive to γ‐aminobutyric acid (GABA) during ethanol (EtOH) withdrawal, and GABA responsiveness is normalized by in vitro treatment with histone deacetylase inhibitors (HDACi). The present study examined the effect of a systemically administered HDACi, suberanilohydroxamic acid (SAHA) on GABA sensitivity, and related molecular changes in VTA neurons during withdrawal after chronic EtOH intake in rats. Methods Sprague Dawley male adult rats were fed with Lieber‐DeCarli diet (9% EtOH or control diet) for 16 days. Experimental groups included control diet‐fed and EtOH diet‐fed (0‐ or 24‐hour withdrawal) rats treated with either SAHA or vehicle injection. Single‐unit recordings were used to measure the response of VTA neurons to GABA. Immunohistochemistry was performed to examine levels of HDAC2, acetylated histone H3 lysine 9 (acH3K9), and GABAA receptor α1 and α5 subunits in the VTA; quantitative polymerase chain reaction was performed to examine the mRNA levels of HDAC2 and GABAA receptor subunits. Results VTA neurons from the withdrawal group exhibited GABA hyposensitivity. In vivo SAHA treatment 2 hours before sacrifice normalized the sensitivity of VTA neurons to GABA. EtOH withdrawal was associated with increased HDAC2 and decreased acH3K9 protein levels; SAHA treatment normalized acH3K9 levels. Interestingly, no significant change was observed in the mRNA levels of HDAC2. The mRNA levels, but not protein levels, of GABAA receptor α1 and α5 subunits were increased during withdrawal. Conclusions Withdrawal from chronic EtOH exposure results in a decrease in GABA‐mediated inhibition, and this GABA hyposensitivity is normalized by in vivo SAHA treatment. Disruption of signaling in the VTA produced by alteration of GABA neurotransmission could be 1 neuroadaptive physiological process leading to craving and relapse. These results suggest that HDACi pharmacotherapy with agents like SAHA might be an effective treatment for alcoholism.
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Affiliation(s)
- Chang You
- Department of Physiology and Biophysics , University of Illinois at Chicago, Chicago, Illinois.,Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois
| | - Bertha J Vandegrift
- Department of Physiology and Biophysics , University of Illinois at Chicago, Chicago, Illinois.,Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois
| | - Huaibo Zhang
- Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois.,Jesse Brown VA Medical Center , Chicago, Illinois
| | - Amy W Lasek
- Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois
| | - Subhash C Pandey
- Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois.,Jesse Brown VA Medical Center , Chicago, Illinois
| | - Mark S Brodie
- Department of Physiology and Biophysics , University of Illinois at Chicago, Chicago, Illinois.,Center for Alcohol Research in Epigenetics , Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois
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Savarese AM, Lasek AW. Transcriptional Regulators as Targets for Alcohol Pharmacotherapies. Handb Exp Pharmacol 2018; 248:505-533. [PMID: 29594350 PMCID: PMC6242703 DOI: 10.1007/164_2018_101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Alcohol use disorder (AUD) is a chronic relapsing brain disease that currently afflicts over 15 million adults in the United States. Despite its prevalence, there are only three FDA-approved medications for AUD treatment, all of which show limited efficacy. Because of their ability to alter expression of a large number of genes, often with great cell-type and brain-region specificity, transcription factors and epigenetic modifiers serve as promising new targets for the development of AUD treatments aimed at the neural circuitry that underlies chronic alcohol abuse. In this chapter, we will discuss transcriptional regulators that can be targeted pharmacologically and have shown some efficacy in attenuating alcohol consumption when targeted. Specifically, the transcription factors cyclic AMP-responsive element binding protein (CREB), peroxisome proliferator-activated receptors (PPARs), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), and glucocorticoid receptor (GR), as well as the epigenetic enzymes, the DNA methyltransferases (DNMTs) and histone deacetylases (HDACs), will be discussed.
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Affiliation(s)
| | - Amy W. Lasek
- Department of Psychiatry, University of Illinois at Chicago,Corresponding author: 1601 West Taylor Street, MC 912, Chicago, IL 60612, Tel: (312) 355-1593,
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Wu J, Liu C, Zhang L, Qu CH, Sui XL, Zhu H, Huang L, Xu YF, Han YL, Qin C. Histone deacetylase-2 is involved in stress-induced cognitive impairment via histone deacetylation and PI3K/AKT signaling pathway modification. Mol Med Rep 2017; 16:1846-1854. [PMID: 28656275 PMCID: PMC5561802 DOI: 10.3892/mmr.2017.6840] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 03/07/2017] [Indexed: 12/24/2022] Open
Abstract
Exposure to chronic stress upregulates blood glucocorticoid levels and impairs cognition via diverse epigenetic mechanisms, such as histone deacetylation. Histone deacetylation can lead to transcriptional silencing of many proteins involved in cognition and may also cause learning and memory dysfunction. Histone deacetylase-2 (HDAC2) has been demonstrated to epigenetically block cognition via a reduction in the histone acetylation level; however, it is unknown whether HDAC2 is involved in the cognitive decline induced by chronic stress. To the best of authors' knowledge, this is the first study to demonstrate that the stress hormone corticosteroid upregulate HDAC2 protein levels in neuro-2a cells and cause cell injuries. HDAC2 knockdown resulted in a significant amelioration of the pathological changes in N2a cells via the upregulation of histone acetylation and modifications in the phosphoinositide 3-kinase/protein kinase B signaling pathway. In addition, the HDAC2 protein levels were upregulated in 12-month-old female C57BL/6J mice under chronic stress in vivo. Taken together, these findings suggested that HDAC2 may be an important negative regulator involved in chronic stress-induced cognitive impairment.
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Affiliation(s)
- Jie Wu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
| | - Cui Liu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
| | - Ling Zhang
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
| | - Chun-Hui Qu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
| | - Xiao-Long Sui
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
| | - Hua Zhu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
| | - Lan Huang
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
| | - Yan-Feng Xu
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
| | - Yun-Lin Han
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
| | - Chuan Qin
- Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Beijing 100021, P.R. China
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Ding S, Zhuge W, Yang J, Wen F, Xu Z, Wang X, Zhuge Q. Insulin Resistance Disrupts the Interaction Between AKT and the NMDA Receptor and the Inactivation of the CaMKIV/CREB Pathway in Minimal Hepatic Encephalopathy. Toxicol Sci 2017; 159:290-306. [DOI: 10.1093/toxsci/kfx093] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Effects of histone deacetylase inhibitor sodium butyrate on heroin seeking behavior in the nucleus accumbens in rats. Brain Res 2016; 1652:151-157. [PMID: 27742468 DOI: 10.1016/j.brainres.2016.10.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 10/06/2016] [Accepted: 10/07/2016] [Indexed: 01/10/2023]
Abstract
Histone acetylation and other modifications of the chromatin are important regulators of gene expression and may contribute to drug-induced behaviors and neuroplasticity. Inhibition of histone deacetylases (HDAC) activity results in the change of some drug-induced behaviors,however, relatively little is known about the effects of HDAC inhibitors on heroin-seeking behavior. In the present study, male rats were trained to self-administer heroin under a FR1 schedule for consecutive 14 days, followed by 14 daily 2h extinction session in the operant chamber. After training, the heroin priming (250μg/kg) was introduced for the reinstatement of heroin-seeking behavior. Pretreatment with sodium butyrate (NaB) (200 or 400mg/kg, i.p.), an inhibitor of HDAC, failed to affect heroin self-administration. Additionally,systemic administration of NaB (400mg/kg, i.p.)increased significantly the reinstatement of heroin-seeking induced by heroin priming when NaB administered 12h, but not 6h before the reinstatement test. The same effect was observed after the intracerebroventricular injection of NaB (5μL, 100μg/μL). Moreover, the levels of histone H3 acetylation at lysine 18(H3K18)and H4 acetylation at lysine 5 or lysine 8(H4K5 or H4K8)in the accumbens nucleus core and shell were remarkably increased during the reinstatement and were further strengthened after intracerebroventricular injection of NaB. These results demonstrated that activation of histone acetylation may be involved in the heroin-seeking behavior, and identifying these epigenetic changes will be critical in proposing a novel pharmacological strategy for treating heroin addiction.
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Jangra A, Sriram CS, Pandey S, Choubey P, Rajput P, Saroha B, Bezbaruah BK, Lahkar M. Epigenetic Modifications, Alcoholic Brain and Potential Drug Targets. Ann Neurosci 2016; 23:246-260. [PMID: 27780992 PMCID: PMC5075742 DOI: 10.1159/000449486] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 06/25/2016] [Indexed: 12/19/2022] Open
Abstract
Acute and chronic alcohol exposure evidently influences epigenetic changes, both transiently and permanently, and these changes in turn influence a variety of cells and organ systems throughout the body. Many of the alcohol-induced epigenetic modifications can contribute to cellular adaptations that ultimately lead to behavioral tolerance and alcohol dependence. The persistence of behavioral changes demonstrates that long-lasting changes in gene expression, within particular regions of the brain, may contribute importantly to the addiction phenotype. The research activities over the past years have demonstrated a crucial role of epigenetic mechanisms in causing long lasting and transient changes in the expression of several genes in diverse tissues, including brain. This has stimulated recent research work that is aimed at characterizing the influence of epigenetic regulatory events in mediating the long lasting and transient effects of alcohol abuse on the brain in humans and animal models of alcohol addiction. In this study, we update our current understanding of the impact of alcohol exposure on epigenetic mechanisms in the brain and refurbish the knowledge of epigenetics in the direction of new drugs development.
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Affiliation(s)
- Ashok Jangra
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Chandra Shaker Sriram
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Suryanarayan Pandey
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Priyansha Choubey
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Prabha Rajput
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
| | - Babita Saroha
- Department of Biotechnology, University Institute of Engineering and Technology (UIET), Maharshi Dayanand University, Rohtak, India
| | - Babul Kumar Bezbaruah
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
- Department of Pharmacology, Gauhati Medical College, Narkachal Hilltop, Bhangagarh, Guwahati, India
| | - Mangala Lahkar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Guwahati, India
- Department of Pharmacology, Gauhati Medical College, Narkachal Hilltop, Bhangagarh, Guwahati, India
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Matchynski-Franks JJ, Susick LL, Schneider BL, Perrine SA, Conti AC. Impaired Ethanol-Induced Sensitization and Decreased Cannabinoid Receptor-1 in a Model of Posttraumatic Stress Disorder. PLoS One 2016; 11:e0155759. [PMID: 27186643 PMCID: PMC4871361 DOI: 10.1371/journal.pone.0155759] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 04/13/2016] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND AND PURPOSE Impaired striatal neuroplasticity may underlie increased alcoholism documented in those with posttraumatic stress disorder (PTSD). Cannabinoid receptor-1 (CB1) is sensitive to the effects of ethanol (EtOH) and traumatic stress, and is a critical regulator of striatal plasticity. To investigate CB1 involvement in the PTSD-alcohol interaction, this study measured the effects of traumatic stress using a model of PTSD, mouse single-prolonged stress (mSPS), on EtOH-induced locomotor sensitization and striatal CB1 levels. METHODS Mice were exposed to mSPS, which includes: 2-h restraint, 10-min group forced swim, 15-min exposure to rat bedding odor, and diethyl ether exposure until unconsciousness or control conditions. Seven days following mSPS exposure, the locomotor sensitizing effects of EtOH were assessed. CB1, post-synaptic density-95 (PSD95), and dopamine-2 receptor (D2) protein levels were then quantified in the dorsal striatum using standard immunoblotting techniques. RESULTS Mice exposed to mSPS-EtOH demonstrated impaired EtOH-induced locomotor sensitization compared to Control-EtOH mice, which was accompanied by reduced striatal CB1 levels. EtOH increased striatal PSD95 in control and mSPS-exposed mice. Additionally, mSPS-Saline exposure increased striatal PSD95 and decreased D2 protein expression, with mSPS-EtOH exposure alleviating these changes. CONCLUSIONS These data indicate that the mSPS model of PTSD blunts the behavioral sensitizing effects of EtOH, a response that suggests impaired striatal neuroplasticity. Additionally, this study demonstrates that mice exposed to mSPS and repeated EtOH exposure decreases CB1 in the striatum, providing a mechanism of interest for understanding the effects of EtOH following severe, multimodal stress exposure.
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Affiliation(s)
- Jessica J. Matchynski-Franks
- Research Service, John D. Dingell VA Medical Center, Detroit, Michigan, United States of America
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Laura L. Susick
- Research Service, John D. Dingell VA Medical Center, Detroit, Michigan, United States of America
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Brandy L. Schneider
- Research Service, John D. Dingell VA Medical Center, Detroit, Michigan, United States of America
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Shane A. Perrine
- Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Alana C. Conti
- Research Service, John D. Dingell VA Medical Center, Detroit, Michigan, United States of America
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, Michigan, United States of America
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Finegersh A, Ferguson C, Maxwell S, Mazariegos D, Farrell D, Homanics GE. Repeated vapor ethanol exposure induces transient histone modifications in the brain that are modified by genotype and brain region. Front Mol Neurosci 2015; 8:39. [PMID: 26300722 PMCID: PMC4524924 DOI: 10.3389/fnmol.2015.00039] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 07/10/2015] [Indexed: 01/01/2023] Open
Abstract
Background: Emerging research implicates ethanol (EtOH)-induced epigenetic modifications in regulating gene expression and EtOH consumption. However, consensus on specific epigenetic modifications induced by EtOH has not yet emerged, making it challenging to identify mechanisms and develop targeted treatments. We hypothesized that chronic intermittent EtOH (CIE) induces persistent changes in histone modifications across the cerebral cortex (CCx), nucleus accumbens (NAc), and prefrontal cortex (PFC), and that these histone modifications are altered in a knock-in mouse strain with altered sensitivity to EtOH. Methods: C57BL/6J (B6) mice and α1SHLA knockin mice on a B6 background were exposed to 16 h of vapor EtOH or room air followed by 8 h of room air for 4 consecutive days and sacrificed at multiple time points up to 72 h following exposure. Histone modifications were assessed using Western blot and dot blot. RT-qPCR was used to study expression of chromatin modifying enzymes in NAc and PFC. Results: In NAc, CIE significantly increased acetylation of histone subunit H3 at lysine 9 (H3K9ac) but not lysine 14 (H3K14ac) or lysine 27 (H3K27ac). In PFC, CIE significantly increased H3K9ac but not H3K14 or H3K27ac. There were no significant changes at 8 or 72 h after EtOH exposure in either NAc or PFC. CIE was also associated with increased expression of Kat2b, Kat5, and Tet1 in NAc but not PFC. In CCx, CIE had a significant effect on levels of H3K18ac; there was also a significant effect of the α1SHLA mutation on levels of H3K27me3, H3K14ac, and H3K18ac as well as a trend for H3S10pK14ac. Conclusions: The EtOH-induced histone modifications observed were transient and varied significantly between brain regions. A genetic mutation that altered sensitivity to EtOH was associated with altered induction of histone modifications during CIE. These results have implications for studying EtOH-induced histone modifications and EtOH sensitivity.
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Affiliation(s)
- Andrey Finegersh
- Departments of Anesthesiology, Pharmacology and Chemical Biology, University of Pittsburgh Pittsburgh, PA, USA
| | - Carolyn Ferguson
- Departments of Anesthesiology, Pharmacology and Chemical Biology, University of Pittsburgh Pittsburgh, PA, USA
| | - Seth Maxwell
- Departments of Anesthesiology, Pharmacology and Chemical Biology, University of Pittsburgh Pittsburgh, PA, USA
| | - David Mazariegos
- Departments of Anesthesiology, Pharmacology and Chemical Biology, University of Pittsburgh Pittsburgh, PA, USA
| | - Daniel Farrell
- Departments of Anesthesiology, Pharmacology and Chemical Biology, University of Pittsburgh Pittsburgh, PA, USA
| | - Gregg E Homanics
- Departments of Anesthesiology, Pharmacology and Chemical Biology, University of Pittsburgh Pittsburgh, PA, USA
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Kurokawa K, Mizuno K, Ohkuma S. Sensitization of ethanol-induced place preference as a result of up-regulation of type 1 inositol 1,4,5-trisphosphate receptors in mouse nucleus accumbens. J Neurochem 2014; 131:836-47. [DOI: 10.1111/jnc.12945] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 09/04/2014] [Accepted: 09/05/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Kazuhiro Kurokawa
- Department of Pharmacology; Kawasaki Medical School; Kurashiki Japan
| | - Koji Mizuno
- Department of Pharmacology; Kawasaki Medical School; Kurashiki Japan
| | - Seitaro Ohkuma
- Department of Pharmacology; Kawasaki Medical School; Kurashiki Japan
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Shibasaki M, Tsuyuki T, Ando K, Otokozawa A, Udagawa Y, Watanabe K, Shibasaki Y, Mori T, Suzuki T. Implication of KCC2 in the sensitization to morphine by chronic ethanol treatment in mice. Synapse 2014; 68:39-43. [PMID: 23760976 DOI: 10.1002/syn.21688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 05/30/2013] [Indexed: 12/30/2022]
Affiliation(s)
- Masahiro Shibasaki
- Department of Toxicology, Hoshi University School of Pharmacy and Pharmaceutical Sciences, Shinagawa-Ku, Tokyo, Japan
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13
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Hyposensitivity to gamma-aminobutyric acid in the ventral tegmental area during alcohol withdrawal: reversal by histone deacetylase inhibitors. Neuropsychopharmacology 2013; 38:1674-84. [PMID: 23474591 PMCID: PMC3717553 DOI: 10.1038/npp.2013.65] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 02/01/2013] [Accepted: 02/21/2013] [Indexed: 11/08/2022]
Abstract
Putative dopaminergic (pDAergic) ventral tegmental area (VTA) neurons have an important role in alcohol addiction. Acute ethanol increases the activity of pDAergic neurons, and withdrawal from repeated ethanol administration produces a decreased sensitivity of pDAergic VTA neurons to GABA. Recent studies show that behavioral changes induced by chronic alcohol are reversed by inhibitors of histone deacetylases (HDACs). Whether HDAC-induced histone modifications regulate changes in GABA sensitivity of VTA pDAergic neurons during withdrawal is unknown. Here, we investigated modulation of withdrawal-induced changes in GABA sensitivity of pDAergic VTA neurons by HDAC inhibitors (HDACi), and also measured the levels of HDAC2, histone (H3-K9) acetylation, and GABA-Aα1 receptor (GABA (A-α1) R) subunit in VTA during ethanol withdrawal. Mice were injected intraperitoneally (ip) with either ethanol (3.5 g/kg) or saline twice daily for 3 weeks. In recordings from pDAergic VTA neurons in brain slices from ethanol-withdrawn mice, sensitivity to GABA (50-500 μM) was reduced. In brain slices from ethanol-withdrawn mice incubated with the HDACi SAHA (vorinostat) or trichostatin A (TSA) for 2 h, the hyposensitivity of pDAergic VTA neurons to GABA was significantly attenuated. There was no effect of TSA or SAHA on GABA sensitivity of pDAergic VTA neurons from saline-treated mice. In addition, ethanol withdrawal was associated with an increase in levels of HDAC2 and a decrease in histone (H3-K9) acetylation and levels of GABA (A-α1) R subunits in the VTA. Therefore, blockade of upregulation of HDAC2 by HDACi normalizes GABA hyposensitivity of pDAergic neurons developed during withdrawal after chronic ethanol treatment, which suggests the possibility that inhibition of HDACs can reverse ethanol-induced neuroadaptational changes in reward circuitry.
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Effect of chronic ethanol treatment on μ-opioid receptor function, interacting proteins and morphine-induced place preference. Psychopharmacology (Berl) 2013; 228:207-15. [PMID: 23430162 DOI: 10.1007/s00213-013-3023-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2012] [Accepted: 02/05/2013] [Indexed: 01/03/2023]
Abstract
RATIONALE Both the acute and chronic consumption of ethanol have been reported to modify several molecular events in the central nervous system, and the endogenous μ-opioid receptor system is involved in the reinforcing/rewarding effects of ethanol. OBJECTIVES The present study was designed to clarify the effects of chronic ethanol treatment on cellular processes involving μ-opioid receptor and the development of morphine-induced rewarding effects. METHODS Male C57BL/6J mice were continuously treated with a liquid diet containing 3.0 w/v ethanol. The direct involvement of μ-opioid receptor functions in the activation of G-proteins and changes in protein levels in the lower midbrain of mice after chronic treatment with ethanol were investigated by a [(35)S] GTPγS binding assay and Western blotting, respectively. The rewarding effects of morphine (5 mg/kg) under treatment with ethanol were measured by the conditioned place preference paradigm. RESULTS The function of μ-opioid receptor was increased by treatment with ethanol in the lower midbrain using [(35)S] GTPγS binding assay. Furthermore, the GRK2 protein level was significantly increased by treatment with ethanol. Chronic treatment with ethanol enhanced the rewarding effects of morphine. On the other hand, this enhancement of the rewarding effects of morphine by ethanol treatment was significantly inhibited by the GRK2 inhibitor β-adrenergic receptor kinase 1 inhibitor. CONCLUSIONS The present study demonstrated that chronic treatment with ethanol enhanced the rewarding effects of morphine by up-regulating functional changes in μ-opioid receptor, mediated by GRK2.
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Kurokawa K, Mizuno K, Shibasaki M, Higashioka M, Oka M, Hirouchi M, Ohkuma S. Acamprosate Suppresses Ethanol-Induced Place Preference in Mice With Ethanol Physical Dependence. J Pharmacol Sci 2013; 122:289-98. [DOI: 10.1254/jphs.13056fp] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Kurokawa K, Mizuno K, Ohkuma S. Dopamine D1 receptor signaling system regulates ryanodine receptor expression in ethanol physical dependence. Alcohol Clin Exp Res 2012; 37:771-83. [PMID: 23278119 DOI: 10.1111/acer.12036] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Accepted: 09/15/2012] [Indexed: 12/21/2022]
Abstract
BACKGROUND Ryanodine receptors (RyRs) amplifying activity-dependent calcium influx via calcium-induced calcium release play an important role in central nervous system functions including learning, memory, and drug abuse. In this study, we investigated the role and the regulatory mechanisms of RyR expression under continuous exposure of mice to ethanol (EtOH) vapor for 9 days. METHODS The model of EtOH physical dependence was prepared as follows: 8-week-old male ddY mice were exposed to EtOH vapor for 9 days. Protein and mRNA of RyR-1, RyR-2, and RyR-3 in the frontal cortex and limbic forebrain were determined by Western blot and real-time RT-PCR analysis, respectively. RESULTS Exposure of mice to EtOH vapor for 9 days induced significant withdrawal signs when estimated with withdrawal score, which was dose-dependently suppressed by intracerebroventricular administration of dantrolene, an RyR antagonist. Protein levels of RyR-1 and RyR-2 in the frontal cortex and limbic forebrain significantly increased during EtOH vapor exposure for 9 days with increased expression of their mRNA, whereas that of RyR-3 in these 2 brain regions showed no changes. Increased proteins and mRNA of RyR-1 and RyR-2 were completely abolished by SCH23390, a selective antagonist of dopamine D1 receptors (D1DRs), but not by sulpiride, a selective antagonist of D2DRs. CONCLUSIONS RyRs play a critical role in the development of EtOH physical dependence and that the up-regulation of RyRs in the brain of mouse, showing EtOH physical dependence is regulated by D1DRs.
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Affiliation(s)
- Kazuhiro Kurokawa
- Department of Pharmacology, Kawasaki Medical School, Kurashiki, Japan
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Yao ZG, Liu Y, Zhang L, Huang L, Ma CM, Xu YF, Zhu H, Qin C. Co-location of HDAC2 and insulin signaling components in the adult mouse hippocampus. Cell Mol Neurobiol 2012; 32:1337-42. [PMID: 22733364 DOI: 10.1007/s10571-012-9859-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Accepted: 06/05/2012] [Indexed: 01/15/2023]
Abstract
As one part of epigenetics, histone deacetylases (HDACs) have been demonstrated to get into the neural events, including neurogenesis, synaptic plasticity, and neurodegeneration through regulating acetylation status of target proteins to influence protein function and gene expression. However, the recent studies indicated that HDAC2, a member of HDACs family, played a role in insulin signaling pathway and synaptic plasticity. Here, we are concerned about whether HDAC2 was co-located with insulin signaling components in postsynaptic glutamatergic neurons (PSGNs) of the adult mouse hippocampus using double immunofluorescence staining. The results displayed that HDAC2 was present in PSGNs marked by N-methyl-D-aspartate receptor subunit 2B, in which major components of insulin signaling pathway such as insulin receptor alpha and beta and insulin receptor substrate-1 were also involved. Accordingly, we speculate that the interaction of HDAC2 and insulin signaling system in PSGNs observed in the present study may serve as a potential mechanism in memory formation. We hope this could provide a valuable basis for understanding the roles of HDAC2 and insulin on cognitive impairment of diabetes mellitus, involved Alzheimer's disease, which is also called type 3 diabetes recently. And this will also benefit to the treatment of insulin-related diseases in the central nervous system.
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Affiliation(s)
- Zhi-Gang Yao
- Comparative Medical Center, Institute of Laboratory Animal Science, Peking Union Medical College (PUMC), Panjiayuan Nanli No. 5, Chaoyang District, Beijing, 100021, China
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Shibasaki M, Kurokawa K, Mizuno K, Suzuki T, Ohkuma S. Actin Dynamics in Development of Behavioral Sensitization After Withdrawal from Long-Term Ethanol Administration to Mice. Alcohol Clin Exp Res 2012; 36:1385-96. [DOI: 10.1111/j.1530-0277.2012.01747.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 12/13/2011] [Indexed: 01/14/2023]
Affiliation(s)
| | - Kazuhiro Kurokawa
- Department of Pharmacology; Kawasaki Medical School; Kurashiki; Japan
| | - Koji Mizuno
- Department of Pharmacology; Kawasaki Medical School; Kurashiki; Japan
| | - Tsutomu Suzuki
- Department of Toxicology; Hoshi University School of Pharmacy and Pharmaceutical Sciences; Shingawa-ku; Tokyo; Japan
| | - Seitaro Ohkuma
- Department of Pharmacology; Kawasaki Medical School; Kurashiki; Japan
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Li M, Zhang DQ, Wang XZ, Xu TJ. NR2B-containing NMDA receptors promote neural progenitor cell proliferation through CaMKIV/CREB pathway. Biochem Biophys Res Commun 2011; 411:667-72. [DOI: 10.1016/j.bbrc.2011.06.170] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 06/27/2011] [Indexed: 01/09/2023]
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