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Iyer V, Saberi SA, Pacheco R, Sizemore EF, Stockman S, Kulkarni A, Cantwell L, Thakur GA, Hohmann AG. Negative allosteric modulation of CB 1 cannabinoid receptor signaling suppresses opioid-mediated tolerance and withdrawal without blocking opioid antinociception. Neuropharmacology 2024; 257:110052. [PMID: 38936657 DOI: 10.1016/j.neuropharm.2024.110052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 06/02/2024] [Accepted: 06/21/2024] [Indexed: 06/29/2024]
Abstract
The direct blockade of CB1 cannabinoid receptors produces therapeutic effects as well as adverse side-effects that limit their clinical potential. CB1 negative allosteric modulators (NAMs) represent an indirect approach to decrease the affinity and/or efficacy of orthosteric cannabinoid ligands or endocannabinoids at CB1. We recently reported that GAT358, a CB1-NAM, blocked opioid-induced mesocorticolimbic dopamine release and reward via a CB1-allosteric mechanism of action. Whether a CB1-NAM dampens opioid-mediated therapeutic effects such as analgesia or alters other unwanted opioid side-effects remain unknown. Here, we characterized the effects of GAT358 on nociceptive behaviors in the presence and absence of morphine in male rats. We examined the impact of GAT358 on formalin-evoked pain behavior and Fos protein expression, a marker of neuronal activation, in the lumbar spinal cord. We also assessed the impact of GAT358 on morphine-induced slowing of colonic transit, tolerance, and withdrawal behaviors in male mice. GAT358 attenuated morphine antinociceptive tolerance without blocking acute antinociception and reduced morphine-induced slowing of colonic motility without impacting fecal boli production. GAT358 also produced antinociception in the presence and absence of morphine in the formalin model of inflammatory nociception and reduced the number of formalin-evoked Fos protein-like immunoreactive cells in the lumbar spinal cord. Finally, GAT358 mitigated the somatic signs of naloxone-precipitated, but not spontaneous, opioid withdrawal following chronic morphine dosing. Our results support the therapeutic potential of CB1-NAMs as novel drug candidates aimed at preserving opioid-mediated analgesia while preventing their unwanted side-effects. Our studies also uncover previously unrecognized antinociceptive properties associated with an arrestin-biased CB1-NAM.
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Affiliation(s)
- Vishakh Iyer
- Program in Neuroscience, Indiana University, Bloomington, IN, USA; Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Shahin A Saberi
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Romario Pacheco
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Emily Fender Sizemore
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Sarah Stockman
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Abhijit Kulkarni
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
| | - Lucas Cantwell
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
| | - Ganesh A Thakur
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
| | - Andrea G Hohmann
- Program in Neuroscience, Indiana University, Bloomington, IN, USA; Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA; Gill Center for Biomolecular Science, Indiana University, Bloomington, IN, USA.
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2
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Martínez-Rivera A, Fetcho RN, Birmingham L, Jiu JX, Yang R, Foord C, Scala-Chávez D, Mekawy N, Pleil K, Pickel VM, Liston C, Castorena CM, Levitz J, Pan YX, Briand LA, Rajadhyaksha AM, Lee FS. Elevating levels of the endocannabinoid 2-arachidonoylglycerol blunts opioid reward but not analgesia. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.02.585967. [PMID: 38766079 PMCID: PMC11101127 DOI: 10.1101/2024.04.02.585967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Converging findings have established that the endocannabinoid (eCB) system serves as a possible target for the development of new treatments for pain as a complement to opioid-based treatments. Here we show in male and female mice that enhancing levels of the eCB, 2-arachidonoylglycerol (2-AG), through pharmacological inhibition of its catabolic enzyme, monoacylglycerol lipase (MAGL), either systemically or in the ventral tegmental area (VTA) with JZL184, leads to a substantial attenuation of the rewarding effects of opioids in male and female mice using conditioned place preference and self-administration paradigms, without altering their analgesic properties. These effects are driven by CB1 receptors (CB1Rs) within the VTA as VTA CB1R conditional knockout, counteracts JZL184's effects. Conversely, pharmacologically enhancing the levels of the other eCB, anandamide (AEA), by inhibition of fatty acid amide hydrolase (FAAH) has no effect on opioid reward or analgesia. Using fiber photometry with fluorescent sensors for calcium and dopamine (DA), we find that enhancing 2-AG levels diminishes opioid reward-related nucleus accumbens (NAc) activity and DA neurotransmission. Together these findings reveal that 2-AG counteracts the rewarding properties of opioids and provides a potential adjunctive therapeutic strategy for opioid-related analgesic treatments.
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Affiliation(s)
- Arlene Martínez-Rivera
- Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, PA, USA
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, New York, NY 10065, USA
| | - Robert N. Fetcho
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
- Department of Psychiatry, Weill Cornell Medicine, New York, NY 10065, USA
| | - Lizzie Birmingham
- Department of Psychology, Temple University; Neuroscience Program, Temple University, 19122, USA
| | - Jin X Jiu
- Department of Anesthesiology, Rutgers New Jersey Medical School, Newark, NJ 07103, USA
| | - Ruirong Yang
- Department of Psychiatry, Weill Cornell Medicine, New York, NY 10065, USA
| | - Careen Foord
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
| | - Diego Scala-Chávez
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, New York, NY 10065, USA
| | - Narmin Mekawy
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, New York, NY 10065, USA
| | - Kristen Pleil
- Department of Pharmacology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Virginia M. Pickel
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
| | - Conor Liston
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
- Department of Psychiatry, Weill Cornell Medicine, New York, NY 10065, USA
| | - Carlos M. Castorena
- Center for Hypothalamic Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Joshua Levitz
- Department of Biochemistry, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Ying-Xian Pan
- Department of Anesthesiology, Rutgers New Jersey Medical School, Newark, NJ 07103, USA
| | - Lisa A. Briand
- Department of Psychology, Temple University; Neuroscience Program, Temple University, 19122, USA
| | - Anjali M. Rajadhyaksha
- Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, PA, USA
- Division of Pediatric Neurology, Department of Pediatrics, Weill Cornell Medicine, New York, NY 10065, USA
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
| | - Francis S. Lee
- Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, NY 10065, USA
- Department of Psychiatry, Weill Cornell Medicine, New York, NY 10065, USA
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Oliva I, Kazi F, Cantwell LN, Thakur GA, Crystal JD, Hohmann AG. Negative allosteric modulation of CB1 cannabinoid receptor signaling decreases intravenous morphine self-administration and relapse in mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.16.575900. [PMID: 38293046 PMCID: PMC10827159 DOI: 10.1101/2024.01.16.575900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
The endocannabinoid system interacts with the reward system to modulate responsiveness to natural reinforcers, as well as drugs of abuse. Previous preclinical studies suggested that direct blockade of CB1 cannabinoid receptors (CB1R) could be leveraged as a potential pharmacological approach to treat substance use disorder, but this strategy failed during clinical trials due to severe psychiatric side effects. Alternative strategies have emerged to circumvent the side effects of direct CB1 binding through the development of allosteric modulators. We hypothesized that pharmacological inhibition of CB1R signaling through negative allosteric modulation (NAM) would reduce the reinforcing properties of morphine and decrease opioid addictive behaviors. By employing i.v. self-administration in mice, we studied the effects of the CB1-biased NAM GAT358 on morphine intake, relapse-like behavior, and motivation to work for morphine infusions. Our data revealed that GAT358 reduced morphine infusion intake during the maintenance phase of morphine self-administration under fixed ratio 1 schedule of reinforcement. GAT358 decreased morphine-seeking behavior after forced abstinence. Moreover, GAT358 dose-dependently decreased the motivation to obtain morphine infusions in a progressive ratio schedule of reinforcement. Strikingly, GAT358 did not affect the motivation to work for food rewards in an identical progressive ratio task, suggesting that the effect of GAT358 in decreasing opioid self-administration is reward specific. Furthermore, GAT58 did not produce motor ataxia in the rota-rod test. Our results suggest that CB1R NAMs reduced the reinforcing properties of morphine and could represent a viable therapeutic route to safely decrease opioid-addicted behaviors.
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Iyer V, Saberi SA, Pacheco R, Sizemore EF, Stockman S, Kulkarni A, Cantwell L, Thakur GA, Hohmann AG. Negative allosteric modulation of cannabinoid CB 1 receptor signaling suppresses opioid-mediated tolerance and withdrawal without blocking opioid antinociception. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.06.574477. [PMID: 38260598 PMCID: PMC10802405 DOI: 10.1101/2024.01.06.574477] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
The direct blockade of CB 1 cannabinoid receptors produces therapeutic effects as well as adverse side-effects that limit their clinical potential. CB 1 negative allosteric modulators (NAMs) represent an indirect approach to decrease the affinity and/or efficacy of orthosteric cannabinoid ligands or endocannabinoids at CB 1 . We recently reported that GAT358, a CB 1 -NAM, blocked opioid-induced mesocorticolimbic dopamine release and reward via a CB 1 -allosteric mechanism of action. Whether a CB 1 -NAM dampens opioid-mediated therapeutic effects such as analgesia or alters other unwanted side-effects of opioids remain unknown. Here, we characterized the effects of GAT358 on nociceptive behaviors in the presence and absence of morphine. We examined the impact of GAT358 on formalin-evoked pain behavior and Fos protein expression, a marker of neuronal activation, in the lumbar dorsal horn. We also assessed the impact of GAT358 on morphine-induced slowing of colonic transit, tolerance, and withdrawal behaviors. GAT358 attenuated morphine antinociceptive tolerance without blocking acute antinociception. GAT358 also reduced morphine-induced slowing of colonic motility without impacting fecal boli production. GAT358 produced antinociception in the presence and absence of morphine in the formalin model of inflammatory nociception and reduced the number of formalin-evoked Fos protein-like immunoreactive cells in the lumbar spinal dorsal horn. Finally, GAT358 mitigated the somatic signs of naloxone-precipitated, but not spontaneous, opioid withdrawal following chronic morphine dosing in mice. Our results support the therapeutic potential of CB 1 -NAMs as novel drug candidates aimed at preserving opioid-mediated analgesia while preventing their unwanted side-effects. Our studies also uncover previously unrecognized antinociceptive properties associated with an arrestin-biased CB 1 -NAMs. Highlights CB 1 negative allosteric modulator (NAM) GAT358 attenuated morphine tolerance GAT358 reduced morphine-induced slowing of colonic motility but not fecal productionGAT358 was antinociceptive for formalin pain alone and when combined with morphineGAT358 reduced formalin-evoked Fos protein expression in the lumbar spinal cordGAT358 mitigated naloxone precipitated withdrawal after chronic morphine dosing.
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Chen W, Jiang B, Zhao Y, Yu W, Zhang M, Liang Z, Liu X, Ye B, Chen D, Yang L, Li F. Discovery of benzyloxy benzamide derivatives as potent neuroprotective agents against ischemic stroke. Eur J Med Chem 2023; 261:115871. [PMID: 37852031 DOI: 10.1016/j.ejmech.2023.115871] [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: 07/13/2023] [Revised: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 10/20/2023]
Abstract
Aberrant activation of N-methyl-d-aspartate receptors (NMDAR) and the resulting neuronal nitric oxide synthase (nNOS) excessive activation play crucial pathogenic roles in neuronal damage caused by stroke. Disrupting postsynaptic density protein 95 (PSD95)-nNOS protein-protein interaction (PPI) has been proposed as a potential therapeutic strategy for ischemic stroke without incurring the unwanted side effects of direct NMDAR antagonism. Based on a specific PSD95-nNOS PPI inhibitor (SCR4026), we conducted a detailed study on structure-activity relationship (SAR) to discover a series of novel benzyloxy benzamide derivatives. Here, our efforts resulted in the best 29 (LY836) with improved neuroprotective activities in primary cortical neurons from glutamate-induced damage and drug-like properties. Whereafter, co-immunoprecipitation experiment demonstrated that 29 significantly blocked PSD95-nNOS association in cultured cortical neurons. Furthermore, 29 displayed good pharmacokinetic properties (T1/2 = 4.26 and 4.08 h after oral and intravenous administration, respectively) and exhibited powerful therapeutic effects in rats subjected to middle cerebral artery occlusion (MCAO) by reducing infarct size and neurological deficit score. These findings suggested that compound 29 may be a promising neuroprotection agent for the treatment of ischemic stroke.
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Affiliation(s)
- Weilin Chen
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China; Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Bo Jiang
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Yifan Zhao
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Wei Yu
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Minyue Zhang
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Zhenchu Liang
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Xing Liu
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Binglin Ye
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Dongyin Chen
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China; Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China.
| | - Lei Yang
- Department of Pharmacy, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, 210009, China.
| | - Fei Li
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China; Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China.
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6
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Bodnar RJ. Endogenous opiates and behavior: 2022. Peptides 2023; 169:171095. [PMID: 37704079 DOI: 10.1016/j.peptides.2023.171095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/15/2023]
Abstract
This paper is the forty-fifth consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles published during 2022 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides and receptors as well as effects of opioid/opiate agonists and antagonists. The review is subdivided into the following specific topics: molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors (1), the roles of these opioid peptides and receptors in pain and analgesia in animals (2) and humans (3), opioid-sensitive and opioid-insensitive effects of nonopioid analgesics (4), opioid peptide and receptor involvement in tolerance and dependence (5), stress and social status (6), learning and memory (7), eating and drinking (8), drug abuse and alcohol (9), sexual activity and hormones, pregnancy, development and endocrinology (10), mental illness and mood (11), seizures and neurologic disorders (12), electrical-related activity and neurophysiology (13), general activity and locomotion (14), gastrointestinal, renal and hepatic functions (15), cardiovascular responses (16), respiration and thermoregulation (17), and immunological responses (18).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, Flushing, NY 11367, USA.
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7
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Zhu LJ, Li F, Zhu DY. nNOS and Neurological, Neuropsychiatric Disorders: A 20-Year Story. Neurosci Bull 2023; 39:1439-1453. [PMID: 37074530 PMCID: PMC10113738 DOI: 10.1007/s12264-023-01060-7] [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: 01/29/2023] [Accepted: 03/05/2023] [Indexed: 04/20/2023] Open
Abstract
In the central nervous system, nitric oxide (NO), a free gas with multitudinous bioactivities, is mainly produced from the oxidation of L-arginine by neuronal nitric oxide synthase (nNOS). In the past 20 years, the studies in our group and other laboratories have suggested a significant involvement of nNOS in a variety of neurological and neuropsychiatric disorders. In particular, the interactions between the PDZ domain of nNOS and its adaptor proteins, including post-synaptic density 95, the carboxy-terminal PDZ ligand of nNOS, and the serotonin transporter, significantly influence the subcellular localization and functions of nNOS in the brain. The nNOS-mediated protein-protein interactions provide new attractive targets and guide the discovery of therapeutic drugs for neurological and neuropsychiatric disorders. Here, we summarize the work on the roles of nNOS and its association with multiple adaptor proteins on neurological and neuropsychiatric disorders.
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Affiliation(s)
- Li-Juan Zhu
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, Department of Histology and Embryology, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Fei Li
- Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Dong-Ya Zhu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China.
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Iyer V, Rangel-Barajas C, Woodward TJ, Kulkarni A, Cantwell L, Crystal JD, Mackie K, Rebec GV, Thakur GA, Hohmann AG. Negative allosteric modulation of CB 1 cannabinoid receptor signaling suppresses opioid-mediated reward. Pharmacol Res 2022; 185:106474. [PMID: 36179954 PMCID: PMC9948526 DOI: 10.1016/j.phrs.2022.106474] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/15/2022] [Accepted: 09/25/2022] [Indexed: 01/18/2023]
Abstract
Blockade of cannabinoid type 1 (CB1)-receptor signaling decreases the rewarding properties of many drugs of abuse and has been proposed as an anti-addiction strategy. However, psychiatric side-effects limit the clinical potential of orthosteric CB1 antagonists. Negative allosteric modulators (NAMs) represent a novel and indirect approach to attenuate CB1 signaling by decreasing affinity and/or efficacy of CB1 ligands. We hypothesized that a CB1-NAM would block opioid reward while avoiding the unwanted effects of orthosteric CB1 antagonists. GAT358, a CB1-NAM, failed to elicit cardinal signs of direct CB1 activation or inactivation when administered by itself. GAT358 decreased catalepsy and hypothermia but not antinociception produced by the orthosteric CB1 agonist CP55,940, suggesting that a CB1-NAM blocked cardinal signs of CB1 activation. Next, GAT358 was evaluated using in vivo assays of opioid-induced dopamine release and reward in male rodents. In the nucleus accumbens shell, a key component of the mesocorticolimbic reward pathway, morphine increased electrically-evoked dopamine efflux and this effect was blocked by a dose of GAT358 that lacked intrinsic effects on evoked dopamine efflux. Moreover, GAT358 blocked morphine-induced reward in a conditioned place preference (CPP) assay without producing reward or aversion alone. GAT358-induced blockade of morphine CPP was also occluded by GAT229, a CB1 positive allosteric modulator (CB1-PAM), and absent in CB1-knockout mice. Finally, GAT358 also reduced oral oxycodone (but not water) consumption in a two-bottle choice paradigm. Our results support the therapeutic potential of CB1-NAMs as novel drug candidates aimed at preventing opioid reward and treating opioid abuse while avoiding unwanted side-effects.
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Affiliation(s)
- Vishakh Iyer
- Program in Neuroscience, Indiana University, Bloomington, IN, USA,Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | | | - Taylor J. Woodward
- Program in Neuroscience, Indiana University, Bloomington, IN, USA,Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Abhijit Kulkarni
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
| | - Lucas Cantwell
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
| | - Jonathon D. Crystal
- Program in Neuroscience, Indiana University, Bloomington, IN, USA,Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Ken Mackie
- Program in Neuroscience, Indiana University, Bloomington, IN, USA,Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA,Gill Center for Biomolecular Science, Indiana University, Bloomington, IN, USA
| | - George V. Rebec
- Program in Neuroscience, Indiana University, Bloomington, IN, USA,Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - Ganesh A. Thakur
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA, USA
| | - Andrea G. Hohmann
- Program in Neuroscience, Indiana University, Bloomington, IN, USA,Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA,Gill Center for Biomolecular Science, Indiana University, Bloomington, IN, USA,Corresponding Author: Andrea G. Hohmann, Psychological and Brain Sciences, Gill Center for Biomolecular Science, Indiana University, Bloomington, IN 47405-7007,
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