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Milton AL. Drug memory reconsolidation: from molecular mechanisms to the clinical context. Transl Psychiatry 2023; 13:370. [PMID: 38040677 PMCID: PMC10692359 DOI: 10.1038/s41398-023-02666-1] [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: 04/13/2023] [Revised: 11/07/2023] [Accepted: 11/13/2023] [Indexed: 12/03/2023] Open
Abstract
Since its rediscovery at the beginning of the 21st Century, memory reconsolidation has been proposed to be a therapeutic target for reducing the impact of emotional memories that can go awry in mental health disorders such as drug addiction (substance use disorder, SUD). Addiction can be conceptualised as a disorder of learning and memory, in which both pavlovian and instrumental learning systems become hijacked into supporting drug-seeking and drug-taking behaviours. The past two decades of research have characterised the details of the molecular pathways supporting the reconsolidation of pavlovian cue-drug memories, with more recent work indicating that the reconsolidation of instrumental drug-seeking memories also relies upon similar mechanisms. This narrative review considers what is known about the mechanisms underlying the reconsolidation of pavlovian and instrumental memories associated with drug use, how these approaches have translated to experimental medicine studies, and the challenges and opportunities for the clinical use of reconsolidation-based therapies.
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Affiliation(s)
- Amy L Milton
- Department of Psychology, University of Cambridge, Cambridge, UK.
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2
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Deng J, Lin X, Zheng Y, Su S, Liu X, Yuan K, Shi L, Bao Y, Lu L. Manipulating critical memory periods to treat psychiatry disorders. Sci Bull (Beijing) 2023; 68:2477-2486. [PMID: 37689533 DOI: 10.1016/j.scib.2023.08.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/10/2023] [Accepted: 08/27/2023] [Indexed: 09/11/2023]
Abstract
The persistence of pathological memory is the basis of several psychiatric disorders. Memory retrieval induces "reconsolidation", a time interval during which the original memory becomes labile and destabilized. Time- and retrieval-dependent processes and memory reconsolidation are critical periods for memory interference. Modulating memory reconsolidation has received considerable research attention as a treatment protocol for several psychiatric conditions such as posttraumatic stress disorder, addiction, anxiety, and trauma-related disorders. This specific time window provides an opportunity for intervention regarding mental diseases. This article reviews the effect of modulating memory reconsolidation using behavioral-, brain stimulation-, and pharmacological-based interventions, which may help bridge the gap between intervention in laboratories and application in clinical practice. The potential advantages, limitations, challenges, and opportunities for memory reconsolidation manipulations were discussed.
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Affiliation(s)
- Jiahui Deng
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China
| | - Xiao Lin
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China
| | - Yongbo Zheng
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China; Peking-Tsinghua Center for Life Sciences and PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China
| | - Sizhen Su
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China
| | - Xiaoxing Liu
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China
| | - Kai Yuan
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China
| | - Le Shi
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China
| | - Yanping Bao
- National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing 100191, China; School of Public Health, Peking University, Beijing 100191, China; Institute of Brain Science and Brain-inspired Research, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250117, China.
| | - Lin Lu
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing 100191, China; Peking-Tsinghua Center for Life Sciences and PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing 100871, China; National Institute on Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing 100191, China.
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3
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Bender BN, Torregrossa MM. Molecular and circuit mechanisms regulating cocaine memory. Cell Mol Life Sci 2020; 77:3745-3768. [PMID: 32172301 PMCID: PMC7492456 DOI: 10.1007/s00018-020-03498-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 02/04/2020] [Accepted: 03/02/2020] [Indexed: 01/27/2023]
Abstract
Risk of relapse is a major challenge in the treatment of substance use disorders. Several types of learning and memory mechanisms are involved in substance use and have implications for relapse. Associative memories form between the effects of drugs and the surrounding environmental stimuli, and exposure to these stimuli during abstinence causes stress and triggers drug craving, which can lead to relapse. Understanding the neural underpinnings of how these associations are formed and maintained will inform future advances in treatment practices. A large body of research has expanded our knowledge of how associative memories are acquired and consolidated, how they are updated through reactivation and reconsolidation, and how competing extinction memories are formed. This review will focus on the vast literature examining the mechanisms of cocaine Pavlovian associative memories with an emphasis on the molecular memory mechanisms and circuits involved in the consolidation, reconsolidation, and extinction of these memories. Additional research elucidating the specific signaling pathways, mechanisms of synaptic plasticity, and epigenetic regulation of gene expression in the circuits involved in associative learning will reveal more distinctions between consolidation, reconsolidation, and extinction learning that can be applied to the treatment of substance use disorders.
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Affiliation(s)
- Brooke N Bender
- Department of Psychiatry, University of Pittsburgh, 450 Technology Drive, Pittsburgh, PA, 15219, USA
- Center for Neuroscience, University of Pittsburgh, 4200 Fifth Ave, Pittsburgh, PA, 15213, USA
| | - Mary M Torregrossa
- Department of Psychiatry, University of Pittsburgh, 450 Technology Drive, Pittsburgh, PA, 15219, USA.
- Center for Neuroscience, University of Pittsburgh, 4200 Fifth Ave, Pittsburgh, PA, 15213, USA.
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Correia C, Romieu P, Olmstead MC, Befort K. Can cocaine-induced neuroinflammation explain maladaptive cocaine-associated memories? Neurosci Biobehav Rev 2020; 111:69-83. [PMID: 31935376 DOI: 10.1016/j.neubiorev.2020.01.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/20/2019] [Accepted: 01/01/2020] [Indexed: 12/19/2022]
Abstract
Persistent and intrusive memories define a number of psychiatric disorders, including posttraumatic stress disorder and substance use disorder. In the latter, memory for drug-paired cues plays a critical role in sustaining compulsive drug use as these are potent triggers of relapse. As with many drugs, cocaine-cue associated memory is strengthened across presentations as cues become reliable predictors of drug availability. Recently, the targeting of cocaine-associated memory through disruption of the reconsolidation process has emerged as a potential therapeutic strategy; reconsolidation reflects the active process by which memory is re-stabilized after retrieval. In addition, a separate line of work reveals that neuroinflammatory markers, regulated by cocaine intake, play a role in memory processes. Our review brings these two literatures together by summarizing recent findings on cocaine-associated reconsolidation and cocaine-induced neuroinflammation. We discuss the interactions between reconsolidation processes and neuroinflammation following cocaine use, concluding with a new perspective on treatment to decrease risk of relapse to cocaine use.
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Affiliation(s)
- Caroline Correia
- Université de Strasbourg, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Centre de la Recherche Nationale Scientifique, UMR 7364, Faculté de Psychologie, 12 rue Goethe, F-67000, Strasbourg, France
| | - Pascal Romieu
- Université de Strasbourg, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Centre de la Recherche Nationale Scientifique, UMR 7364, Faculté de Psychologie, 12 rue Goethe, F-67000, Strasbourg, France
| | - Mary C Olmstead
- Dept. Psychology, Centre for Neuroscience Studies, Queen's University, Kingston ON, K7L 3N6, Canada
| | - Katia Befort
- Université de Strasbourg, Laboratoire de Neurosciences Cognitives et Adaptatives (LNCA), Centre de la Recherche Nationale Scientifique, UMR 7364, Faculté de Psychologie, 12 rue Goethe, F-67000, Strasbourg, France.
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Newman AH, Battiti FO, Bonifazi A. 2016 Philip S. Portoghese Medicinal Chemistry Lectureship: Designing Bivalent or Bitopic Molecules for G-Protein Coupled Receptors. The Whole Is Greater Than the Sum of Its Parts. J Med Chem 2019; 63:1779-1797. [PMID: 31499001 DOI: 10.1021/acs.jmedchem.9b01105] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The genesis of designing bivalent or bitopic molecules that engender unique pharmacological properties began with Portoghese's work directed toward opioid receptors, in the early 1980s. This strategy has evolved as an attractive way to engineer highly selective compounds for targeted G-protein coupled receptors (GPCRs) with optimized efficacies and/or signaling bias. The emergence of X-ray crystal structures of many GPCRs and the identification of both orthosteric and allosteric binding sites have provided further guidance to ligand drug design that includes a primary pharmacophore (PP), a secondary pharmacophore (SP), and a linker between them. It is critical to note the synergistic relationship among all three of these components as they contribute to the overall interaction of these molecules with their receptor proteins and that strategically designed combinations have and will continue to provide the GPCR molecular tools of the future.
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Affiliation(s)
- Amy Hauck Newman
- Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse-Intramural Research Program, National Institutes of Health, 333 Cassell Drive, Baltimore, Maryland 21224, United States
| | - Francisco O Battiti
- Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse-Intramural Research Program, National Institutes of Health, 333 Cassell Drive, Baltimore, Maryland 21224, United States
| | - Alessandro Bonifazi
- Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse-Intramural Research Program, National Institutes of Health, 333 Cassell Drive, Baltimore, Maryland 21224, United States
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Li Y, Kong Q, Yue J, Gou X, Xu M, Wu X. Genome-edited skin epidermal stem cells protect mice from cocaine-seeking behaviour and cocaine overdose. Nat Biomed Eng 2019; 3:105-113. [PMID: 30899600 PMCID: PMC6423967 DOI: 10.1038/s41551-018-0293-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 08/15/2018] [Indexed: 12/20/2022]
Abstract
Cocaine addiction is associated with compulsive drug-seeking, and exposure to the drug or to drug-associated cues leads to relapse, even after long periods of abstention. A variety of pharmacological targets and behavioral interventions have been explored to counteract cocaine addiction, but to date no market-approved medications for treating cocaine addiction or relapse exist, and effective interventions for acute emergencies resulting from cocaine overdose are lacking. We recently demonstrated that skin epidermal stem cells can be readily edited by using CRISPR (clustered regularly interspaced short palindromic repeats) and then transplanted back into the donor mice. Here, we show that the transplantation, into mice, of skin cells modified to express an enhanced form of butyrylcholinesterase, an enzyme that hydrolyzes cocaine, enables the long-term release of the enzyme and efficiently protects the mice from cocaine-seeking behavior and cocaine overdose. Cutaneous gene therapy through skin transplants that elicit drug elimination may offer a therapeutic option to address drug abuse.
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Affiliation(s)
- Yuanyuan Li
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Qingyao Kong
- Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL, USA
| | - Jiping Yue
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Xuewen Gou
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Ming Xu
- Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL, USA.
| | - Xiaoyang Wu
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA.
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Opiate exposure state controls dopamine D3 receptor and cdk5/calcineurin signaling in the basolateral amygdala during reward and withdrawal aversion memory formation. Prog Neuropsychopharmacol Biol Psychiatry 2017. [PMID: 28627448 DOI: 10.1016/j.pnpbp.2017.06.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The dopamine (DA) D3 receptor (D3R) is highly expressed in the basolateral nucleus of the amygdala (BLA), a neural region critical for processing opiate-related reward and withdrawal aversion-related memories. Functionally, D3R transmission is linked to downstream Cdk5 and calcineurin signaling, both of which regulate D3R activity states and play critical roles in memory-related synaptic plasticity. Previous evidence links D3R transmission to opiate-related memory processing, however little is known regarding how chronic opiate exposure may alter D3R-dependent memory mechanisms. Using conditioned place preference (CPP) and withdrawal aversion (conditioned place aversion; CPA) procedures in rats, combined with molecular analyses of BLA protein expression, we examined the effects of chronic opiate exposure on the functional role of intra-BLA D3R transmission during the acquisition of opiate reward or withdrawal aversion memories. Remarkably, we report that the state of opiate exposure during behavioural conditioning (opiate-naïve/non-dependent vs. chronically exposed and in withdrawal) controlled the functional role of intra-BLA D3R transmission during the acquisition of both opiate reward memories and withdrawal-aversion associative memories. Thus, whereas intra-BLA D3R blockade had no effect on opiate reward memory formation in the non-dependent state, blockade of intra-BLA D3R transmission prevented the formation of opiate reward and withdrawal aversion memory in the chronically exposed state. This switch in the functional role of D3R transmission corresponded to significant increases in Cdk5 phosphorylation and total expression levels of calcineurin, and a corresponding decrease in intra-BLA D3R expression. Inhibition of either intra-BLA Cdk5 or calcineurin reversed these effects, switching intra-BLA associative memory formation back to a D3R-independent mechanism.
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8
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Sokoloff P, Le Foll B. The dopamine D3 receptor, a quarter century later. Eur J Neurosci 2016; 45:2-19. [DOI: 10.1111/ejn.13390] [Citation(s) in RCA: 150] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/23/2016] [Accepted: 08/28/2016] [Indexed: 12/16/2022]
Affiliation(s)
| | - Bernard Le Foll
- Centre for Addiction and Mental Health; Toronto ON Canada
- University of Toronto; Toronto ON Canada
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García-Pardo MP, Roger-Sanchez C, Rodríguez-Arias M, Miñarro J, Aguilar MA. Pharmacological modulation of protein kinases as a new approach to treat addiction to cocaine and opiates. Eur J Pharmacol 2016; 781:10-24. [DOI: 10.1016/j.ejphar.2016.03.065] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Revised: 03/28/2016] [Accepted: 03/31/2016] [Indexed: 12/13/2022]
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Merlo E, Ratano P, Ilioi EC, Robbins MALS, Everitt BJ, Milton AL. Amygdala Dopamine Receptors Are Required for the Destabilization of a Reconsolidating Appetitive Memory. eNeuro 2015; 2:ENEURO.0024-14.2015. [PMID: 26464966 PMCID: PMC4586917 DOI: 10.1523/eneuro.0024-14.2015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 01/06/2015] [Accepted: 02/09/2015] [Indexed: 11/21/2022] Open
Abstract
Disrupting maladaptive memories may provide a novel form of treatment for neuropsychiatric disorders, but little is known about the neurochemical mechanisms underlying the induction of lability, or destabilization, of a retrieved consolidated memory. Destabilization has been theoretically linked to the violation of expectations during memory retrieval, which, in turn, has been suggested to correlate with prediction error (PE). It is well-established that PE correlates with dopaminergic signaling in limbic forebrain structures that are critical for emotional learning. The basolateral amygdala is a key neural substrate for the reconsolidation of pavlovian reward-related memories, but the involvement of dopaminergic mechanisms in inducing lability of amygdala-dependent memories has not been investigated. Therefore, we tested the hypothesis that dopaminergic signaling within the basolateral amygdala is required for the destabilization of appetitive pavlovian memories by investigating the effects dopaminergic and protein synthesis manipulations on appetitive memory reconsolidation in rats. Intra-amygdala administration of either the D1-selective dopamine receptor antagonist SCH23390 or the D2-selective dopamine receptor antagonist raclopride prevented memory destabilization at retrieval, thereby protecting the memory from the effects of an amnestic agent, the protein synthesis inhibitor anisomycin. These data show that dopaminergic transmission within the basolateral amygdala is required for memory labilization during appetitive memory reconsolidation.
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Affiliation(s)
- Emiliano Merlo
- Department of Psychology, University of Cambridge , Cambridge CB2 3EB, United Kingdom
| | - Patrizia Ratano
- Department of Psychology, University of Cambridge , Cambridge CB2 3EB, United Kingdom
| | - Elena C Ilioi
- Department of Psychology, University of Cambridge , Cambridge CB2 3EB, United Kingdom
| | - Miranda A L S Robbins
- Department of Psychology, University of Cambridge , Cambridge CB2 3EB, United Kingdom
| | - Barry J Everitt
- Department of Psychology, University of Cambridge , Cambridge CB2 3EB, United Kingdom
| | - Amy L Milton
- Department of Psychology, University of Cambridge , Cambridge CB2 3EB, United Kingdom
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11
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Heath FC, Jurkus R, Bast T, Pezze MA, Lee JLC, Voigt JP, Stevenson CW. Dopamine D1-like receptor signalling in the hippocampus and amygdala modulates the acquisition of contextual fear conditioning. Psychopharmacology (Berl) 2015; 232:2619-29. [PMID: 25743759 PMCID: PMC4480849 DOI: 10.1007/s00213-015-3897-y] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 02/16/2015] [Indexed: 12/11/2022]
Abstract
RATIONALE Dopamine D1-like receptor signalling is involved in contextual fear conditioning, but the brain regions involved and its role in other contextual fear memory processes remain unclear. OBJECTIVES The objective of this study was to investigate (1) the effects of SCH 23390, a dopamine D1/D5 receptor antagonist, on contextual fear memory encoding, retrieval and reconsolidation, and (2) if the effects of SCH 23390 on conditioning involve the dorsal hippocampus (DH) and/or basolateral amygdala (BLA). METHODS Rats were used to examine the effects of systemically administering SCH 23390 on the acquisition, consolidation, retrieval and reconsolidation of contextual fear memory, and on locomotor activity and shock sensitivity. We also determined the effects of MK-801, an NMDA receptor antagonist, on contextual fear memory reconsolidation. The effects of infusing SCH 23390 locally into DH or BLA on contextual fear conditioning and locomotor activity were also examined. RESULTS Systemic administration of SCH 23390 impaired contextual fear conditioning but had no effects on fear memory consolidation, retrieval or reconsolidation. MK-801 was found to impair reconsolidation, suggesting that the behavioural parameters used allowed for the pharmacological disruption of memory reconsolidation. The effects of SCH 23390 on conditioning were unlikely the result of any lasting drug effects on locomotor activity at memory test or any acute drug effects on shock sensitivity during conditioning. SCH 23390 infused into either DH or BLA impaired contextual fear conditioning and decreased locomotor activity. CONCLUSIONS These findings suggest that dopamine D1-like receptor signalling in DH and BLA contributes to the acquisition of contextual fear memory.
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Affiliation(s)
- Florence C. Heath
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD UK
| | - Regimantas Jurkus
- School of Mathematical Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD UK
| | - Tobias Bast
- School of Psychology and Neuroscience, University of Nottingham, University Park, Nottingham, NG7 2RD UK
| | - Marie A. Pezze
- School of Psychology and Neuroscience, University of Nottingham, University Park, Nottingham, NG7 2RD UK
| | - Jonathan L. C. Lee
- School of Psychology, University of Birmingham, Edgbaston, Birmingham, B15 2TT UK
| | - J. Peter Voigt
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD UK
| | - Carl W. Stevenson
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD UK
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Keck TM, Burzynski C, Shi L, Newman AH. Beyond small-molecule SAR: using the dopamine D3 receptor crystal structure to guide drug design. ADVANCES IN PHARMACOLOGY 2014; 69:267-300. [PMID: 24484980 DOI: 10.1016/b978-0-12-420118-7.00007-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The dopamine D3 receptor is a target of pharmacotherapeutic interest in a variety of neurological disorders including schizophrenia, restless leg syndrome, and drug addiction. The high protein sequence homology between the D3 and D2 receptors has posed a challenge to developing D3 receptor-selective ligands whose behavioral actions can be attributed to D3 receptor engagement, in vivo. However, through primarily small-molecule structure-activity relationship (SAR) studies, a variety of chemical scaffolds have been discovered over the past two decades that have resulted in several D3 receptor-selective ligands with high affinity and in vivo activity. Nevertheless, viable clinical candidates remain limited. The recent determination of the high-resolution crystal structure of the D3 receptor has invigorated structure-based drug design, providing refinements to the molecular dynamic models and testable predictions about receptor-ligand interactions. This chapter will highlight recent preclinical and clinical studies demonstrating potential utility of D3 receptor-selective ligands in the treatment of addiction. In addition, new structure-based rational drug design strategies for D3 receptor-selective ligands that complement traditional small-molecule SAR to improve the selectivity and directed efficacy profiles are examined.
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Affiliation(s)
- Thomas M Keck
- Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse-Intramural Research Program, Baltimore, Maryland, USA
| | - Caitlin Burzynski
- Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse-Intramural Research Program, Baltimore, Maryland, USA
| | - Lei Shi
- Department of Physiology and Biophysics and Institute for Computational Biomedicine, Weill Cornell Medical College, New York, USA
| | - Amy Hauck Newman
- Medicinal Chemistry Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse-Intramural Research Program, Baltimore, Maryland, USA.
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Yan Y, Newman AH, Xu M. Dopamine D1 and D3 receptors mediate reconsolidation of cocaine memories in mouse models of drug self-administration. Neuroscience 2014; 278:154-64. [PMID: 25149631 PMCID: PMC4172503 DOI: 10.1016/j.neuroscience.2014.08.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 07/15/2014] [Accepted: 08/08/2014] [Indexed: 12/18/2022]
Abstract
Memories of drug experience and drug-associated environmental cues can elicit drug-seeking and taking behaviors in humans. Disruption of reconsolidation of drug memories dampens previous memories and therefore may provide a useful way to treat drug abuse. We and others previously demonstrated that dopamine D1 and D3 receptors play differential roles in acquiring cocaine-induced behaviors. Moreover, D3 receptors contribute to the reconsolidation of cocaine-induced conditioned place preference. In the present study, we examined effects of manipulating D1 or D3 receptors on reconsolidation of cocaine memories in mouse models of drug self-administration. We found that pharmacological blockade of D1 receptors or a genetic mutation of the D3 receptor gene attenuated reconsolidation that lasted for at least 1week after the memory retrieval. In contrast, with no memory retrieval, pharmacological antagonism of D1 receptors or the D3 receptor gene mutation did not significantly affect reconsolidation of cocaine memories. Pharmacological blockade of D3 receptors also attenuated reconsolidation in wild-type mice that lasted for at least 1week after the memory retrieval. These results suggest that D1 and D3 receptors and related signaling mechanisms play key roles in reconsolidation of cocaine memories in mice, and that these receptors may serve as novel targets for the treatment of cocaine abuse in humans.
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Affiliation(s)
- Y Yan
- Department of Anesthesia and Critical Care, The University of Chicago, Chicago, IL, USA
| | - A H Newman
- Medicinal Chemistry Section, National Institute on Drug Abuse-Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
| | - M Xu
- Department of Anesthesia and Critical Care, The University of Chicago, Chicago, IL, USA.
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14
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Martelle SE, Nader SH, Czoty PW, John WS, Duke AN, Garg PK, Garg S, Newman AH, Nader MA. Further characterization of quinpirole-elicited yawning as a model of dopamine D3 receptor activation in male and female monkeys. J Pharmacol Exp Ther 2014; 350:205-11. [PMID: 24876234 DOI: 10.1124/jpet.114.214833] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The dopamine (DA) D3 receptor (D3R) has been associated with impulsivity, pathologic gambling, and drug addiction, making it a potential target for pharmacotherapy development. Positron emission tomography studies using the D3R-preferring radioligand [(11)C]PHNO ([(11)C](+)-propyl-hexahydro-naphtho-oxazin) have shown higher binding potentials in drug abusers compared with control subjects. Preclinical studies have examined D3R receptor activation using the DA agonist quinpirole and the unconditioned behavior of yawning. However, the relationship between quinpirole-elicited yawning and D3R receptor availability has not been determined. In Experiment 1, eight drug-naive male rhesus monkeys were scanned with [(11)C]PHNO, and the ability of quinpirole (0.01-0.3 mg/kg i.m.) to elicit yawning was examined. Significant positive (globus pallidus) and negative (caudate nucleus, putamen, ventral pallidum, and hippocampus) relationships between D3R receptor availability and quinpirole-induced yawns were noted. Experiment 2 replicated earlier findings that a history of cocaine self-administration (n = 11) did not affect quinpirole-induced yawning and extended this to examine monkeys (n = 3) with a history of methamphetamine (MA) self-administration and found that monkeys with experience self-administering MA showed greater potency and significantly higher quinpirole-elicited yawning compared with controls. Finally, quinpirole-elicited yawning was studied in drug-naive female monkeys (n = 6) and compared with drug-naive male monkeys (n = 8). Sex differences were noted, with quinpirole being more potent and eliciting significantly more yawns in males compared with females. Taken together these findings support the use of quinpirole-elicited yawning as a behavioral tool for examining D3R activation in monkeys and that both drug history and sex may influence individual sensitivity to the behavioral effects of D3R compounds.
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Affiliation(s)
- Susan E Martelle
- Departments of Physiology and Pharmacology (S.E.M., S.H.N., P.W.C., W.S.J., A.N.D., M.A.N.) and Radiology (P.K.G., S.G., M.A.N.), Wake Forest School of Medicine, Winston-Salem, North Carolina; and the Intramural Research Program (A.H.N.), National Institute on Drug Abuse, Baltimore, Maryland
| | - Susan H Nader
- Departments of Physiology and Pharmacology (S.E.M., S.H.N., P.W.C., W.S.J., A.N.D., M.A.N.) and Radiology (P.K.G., S.G., M.A.N.), Wake Forest School of Medicine, Winston-Salem, North Carolina; and the Intramural Research Program (A.H.N.), National Institute on Drug Abuse, Baltimore, Maryland
| | - Paul W Czoty
- Departments of Physiology and Pharmacology (S.E.M., S.H.N., P.W.C., W.S.J., A.N.D., M.A.N.) and Radiology (P.K.G., S.G., M.A.N.), Wake Forest School of Medicine, Winston-Salem, North Carolina; and the Intramural Research Program (A.H.N.), National Institute on Drug Abuse, Baltimore, Maryland
| | - William S John
- Departments of Physiology and Pharmacology (S.E.M., S.H.N., P.W.C., W.S.J., A.N.D., M.A.N.) and Radiology (P.K.G., S.G., M.A.N.), Wake Forest School of Medicine, Winston-Salem, North Carolina; and the Intramural Research Program (A.H.N.), National Institute on Drug Abuse, Baltimore, Maryland
| | - Angela N Duke
- Departments of Physiology and Pharmacology (S.E.M., S.H.N., P.W.C., W.S.J., A.N.D., M.A.N.) and Radiology (P.K.G., S.G., M.A.N.), Wake Forest School of Medicine, Winston-Salem, North Carolina; and the Intramural Research Program (A.H.N.), National Institute on Drug Abuse, Baltimore, Maryland
| | - Pradeep K Garg
- Departments of Physiology and Pharmacology (S.E.M., S.H.N., P.W.C., W.S.J., A.N.D., M.A.N.) and Radiology (P.K.G., S.G., M.A.N.), Wake Forest School of Medicine, Winston-Salem, North Carolina; and the Intramural Research Program (A.H.N.), National Institute on Drug Abuse, Baltimore, Maryland
| | - Sudha Garg
- Departments of Physiology and Pharmacology (S.E.M., S.H.N., P.W.C., W.S.J., A.N.D., M.A.N.) and Radiology (P.K.G., S.G., M.A.N.), Wake Forest School of Medicine, Winston-Salem, North Carolina; and the Intramural Research Program (A.H.N.), National Institute on Drug Abuse, Baltimore, Maryland
| | - Amy H Newman
- Departments of Physiology and Pharmacology (S.E.M., S.H.N., P.W.C., W.S.J., A.N.D., M.A.N.) and Radiology (P.K.G., S.G., M.A.N.), Wake Forest School of Medicine, Winston-Salem, North Carolina; and the Intramural Research Program (A.H.N.), National Institute on Drug Abuse, Baltimore, Maryland
| | - Michael A Nader
- Departments of Physiology and Pharmacology (S.E.M., S.H.N., P.W.C., W.S.J., A.N.D., M.A.N.) and Radiology (P.K.G., S.G., M.A.N.), Wake Forest School of Medicine, Winston-Salem, North Carolina; and the Intramural Research Program (A.H.N.), National Institute on Drug Abuse, Baltimore, Maryland
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