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Gonçalves MR, da Conceição MS, Jesus CHA, Gasparin AT, Rosa ES, da Cunha JM. Spinal cannabinoid CB1 or CB2 receptors activation attenuates mechanical allodynia in streptozotocin-induced diabetic rats. Behav Pharmacol 2022; 33:158-164. [PMID: 32804775 DOI: 10.1097/fbp.0000000000000580] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Diabetes is a chronic disease associated with a high number of complications such as peripheral neuropathy, which causes sensorial disturbances and may lead to the development of diabetic neuropathic pain (DNP). The current treatment for DNP is just palliative and the drugs may cause severe adverse effects, leading to discontinuation of treatment. Thus, new therapeutic targets need to be urgently investigated. Studies have shown that cannabinoids have promising effects in the treatment of several pathological conditions, including chronic pain. Thus, we aimed to investigate the acute effect of the intrathecal injection of CB1 or CB2 cannabinoid receptor agonists N-(2-chloroethyl)-5Z, 8Z, 11Z, 14Z-eicosatetraenamide (ACEA) or JWH 133, respectively (10, 30 or 100 μg/rat) on the mechanical allodynia associated with experimental diabetes induced by streptozotocin (60 mg/kg; intraperitoneal) in rats. Cannabinoid receptor antagonists CB1 AM251 or CB2 AM630 (1 mg/kg) were given before treatment with respective agonists to confirm the involvement of cannabinoid CB1 or CB2 receptors. Rats with diabetes exhibited a significant reduction on the paw mechanical threshold 2 weeks after diabetes induction, having the maximum effect observed 4 weeks after the streptozotocin injection. This mechanical allodynia was significantly improved by intrathecal treatment with ACEA or JWH 133 (only at the higher dose of 100 μg). Pre-treatment with AM251 or AM630 significantly reverted the anti-allodynic effect of the ACEA or JWH 133, respectively. Considering the clinical challenge that the treatment of DPN represents, this study showed for the first time, that the intrathecal cannabinoid receptors agonists may represent an alternative for the treatment of DNP.
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Affiliation(s)
- Maryna Rodrigues Gonçalves
- Department of Pharmacology, Biological Science Sector, Federal University of Parana, Curitiba, Parana, Brazil
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Mizuno I, Matsuda S, Tohyama S, Mizutani A. The role of the cannabinoid system in fear memory and extinction in male and female mice. Psychoneuroendocrinology 2022; 138:105688. [PMID: 35176534 DOI: 10.1016/j.psyneuen.2022.105688] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 11/17/2022]
Abstract
The prevalence of post-traumatic stress disorder (PTSD) is higher in women than in men. Among both humans and mice, females exhibit higher resistance to fear extinction than males, suggesting that differences between sexes in fear-extinction processes are involved in the pathophysiology of such fear-related diseases. Sex differences in molecular mechanisms underlying fear memory and extinction are unclear. The cannabinoid (CB) system is well known to be involved in fear memory and extinction, but this involvement is based mainly on experiments using male rodents. It is not known whether there are sex differences in the role of the CB system in fear memory and extinction. To explore this possibility, we investigated the effects of pharmacological manipulations of the CB system on the retrieval and extinction of contextual fear memory in male and female mice. WIN55,212-2, a CB receptor (CBR) agonist, augmented the retrieval of fear memory in both sexes, but SR141716 (a CB1R antagonist) did not affect it in either sex. An enhancement of 2-arachidonylglycerol (2-AG, one of the two major endocannabinoids) via JZL184 (an inhibitor of the 2-AG hydrolase monoacylglycerol lipase [MAGL]), augmented the retrieval of fear memory through the activation of CB1R but not CB2R in female mice. In contrast, the enhancement of N-arachidonylethanolamine (AEA, the other major endocannabinoid) via URB597, an inhibitor of an AEA hydrolase (fatty acid amide hydrolase-1) did not show any effects on the retrieval of fear memory in either sex. WIN55,212-2, SR141716, and JZL184 inhibited fear extinction irrespective of sex. URB enhanced fear extinction in females that were in diestrus phase at the first extinction session, but not in males. These results suggest that although the role of CB1R in the retrieval and extinction of contextual fear memory is common among males and females, the effects of an increase in endocannabinoid levels on the retrieval or extinction of contextual fear memory differ between the sexes.
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Affiliation(s)
- Ikumi Mizuno
- Department of Pharmacotherapeutics, Showa Pharmaceutical University, 3-3165, Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan
| | - Shingo Matsuda
- Department of Pharmacotherapeutics, Showa Pharmaceutical University, 3-3165, Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan; Department of Cognitive Behavioral Physiology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chiba 260-8670, Japan; Department of Ultrastructural Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo 187-8502, Japan.
| | - Suguru Tohyama
- Institute of Clinical Medicine and Research, Research Center for Medical Sciences, The Jikei University School of Medicine, 163-1 Kashiwa-shita, Kashiwa City, Chiba 277-8567, Japan
| | - Akihiro Mizutani
- Department of Pharmacotherapeutics, Showa Pharmaceutical University, 3-3165, Higashi-Tamagawagakuen, Machida, Tokyo 194-8543, Japan
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Mizuno I, Matsuda S. The role of endocannabinoids in consolidation, retrieval, reconsolidation, and extinction of fear memory. Pharmacol Rep 2021; 73:984-1003. [PMID: 33954935 DOI: 10.1007/s43440-021-00246-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 02/26/2021] [Accepted: 03/07/2021] [Indexed: 12/19/2022]
Abstract
Endocannabinoids are involved in various physiological functions, including synaptic plasticity and memory, and some psychiatric disorders, such as posttraumatic stress disorder (PTSD), through the activation of cannabinoid (CB) receptors. Patients with PTSD often show excessive fear memory and impairment of fear extinction (FE). It has been reported that the stability of acquired fear memory is altered through multiple memory stages, such as consolidation and reconsolidation. FE also affects the stability of fear memory. Each stage of fear memory formation and FE are regulated by different molecular mechanisms, including the CB system. However, to the best of our knowledge, no review summarizes the role of the CB system during each stage of fear memory formation and FE. In this review, we summarize the roles of endocannabinoids in fear memory formation and FE. Moreover, based on the summary, we propose a new hypothesis for the role of endocannabinoids in fear regulation, and discuss treatment for PTSD using CB system-related drugs.
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Affiliation(s)
- Ikumi Mizuno
- Department of Pharmacotherapeutics, Showa Pharmaceutical University, 3-3165, Higashi-Tamagawagakuen, Machida, Tokyo, 194-8543, Japan
| | - Shingo Matsuda
- Department of Pharmacotherapeutics, Showa Pharmaceutical University, 3-3165, Higashi-Tamagawagakuen, Machida, Tokyo, 194-8543, Japan. .,Department of Cognitive Behavioral Physiology, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chiba, Chiba, 260-8670, Japan. .,Department of Ultrastructural Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, 187-8502, Japan.
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Ji YY, Wang ZL, Pei FN, Shi JJ, Li JJ, Gunosewoyo H, Yang F, Tang J, Xie X, Yu LF. Introducing nitrogen atoms to amidoalkylindoles: potent and selective cannabinoid type 2 receptor agonists with improved aqueous solubility. MEDCHEMCOMM 2019; 10:2131-2139. [PMID: 32904145 PMCID: PMC7451064 DOI: 10.1039/c9md00411d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/25/2019] [Indexed: 12/21/2022]
Abstract
Previously we identified a series of amidoalkylindoles as potent and selective CB2 partial agonists. In the present study, we report our continuous effort to improve the aqueous solubility by introducing N atoms to the amidoalkylindole framework. Synthesis, characterization, and pharmacology evaluations were described. Bioisosteric replacements of the indole nucleus with an indazole, azaindole and benzimidazole were explored. Benzimidazole 43 (EC50,CB1 = NA, EC50,CB2 = 0.067 μM) and azaindole 24 (EC50,CB1 = NA, EC50,CB2 = 0.048 μM) were found to be potent and selective CB2 receptor partial agonists, both with improved aqueous solubility.
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Affiliation(s)
- Yue-Yang Ji
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development , School of Chemistry and Molecular Engineering , East China Normal University , 3663 North Zhongshan Road , Shanghai 200062 , China .
| | - Zhi-Long Wang
- CAS Key Laboratory of Receptor Research , National Center for Drug Screening , Shanghai Institute of Materia Medica , Chinese Academy of Sciences , 189 Guo Shou Jing Road , Shanghai 201203 , China .
| | - Fang-Ning Pei
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development , School of Chemistry and Molecular Engineering , East China Normal University , 3663 North Zhongshan Road , Shanghai 200062 , China .
| | - Jun-Jie Shi
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development , School of Chemistry and Molecular Engineering , East China Normal University , 3663 North Zhongshan Road , Shanghai 200062 , China .
| | - Jiao-Jiao Li
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development , School of Chemistry and Molecular Engineering , East China Normal University , 3663 North Zhongshan Road , Shanghai 200062 , China .
| | - Hendra Gunosewoyo
- School of Pharmacy and Biomedical Sciences , Faculty of Health Sciences , Curtin University , Bentley , Perth , WA 6102 , Australia
| | - Fan Yang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development , School of Chemistry and Molecular Engineering , East China Normal University , 3663 North Zhongshan Road , Shanghai 200062 , China .
| | - Jie Tang
- Shanghai Key Laboratory of Green Chemistry and Chemical Process , School of Chemistry and Molecular Engineering , East China Normal University , 3663 North Zhongshan Road , Shanghai 200062 , China
| | - Xin Xie
- CAS Key Laboratory of Receptor Research , National Center for Drug Screening , Shanghai Institute of Materia Medica , Chinese Academy of Sciences , 189 Guo Shou Jing Road , Shanghai 201203 , China .
| | - Li-Fang Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development , School of Chemistry and Molecular Engineering , East China Normal University , 3663 North Zhongshan Road , Shanghai 200062 , China .
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Cha HJ, Song YJ, Lee DE, Kim YH, Shin J, Jang CG, Suh SK, Kim SJ, Yun J. Receptor Binding Affinities of Synthetic Cannabinoids Determined by Non-Isotopic Receptor Binding Assay. Toxicol Res 2019; 35:37-44. [PMID: 30766656 PMCID: PMC6354946 DOI: 10.5487/tr.2019.35.1.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/07/2018] [Accepted: 08/21/2018] [Indexed: 01/24/2023] Open
Abstract
A major predictor of the efficacy of natural or synthetic cannabinoids is their binding affinity to the cannabinoid type I receptor (CB1) in the central nervous system, as the main psychological effects of cannabinoids are achieved via binding to this receptor. Conventionally, receptor binding assays have been performed using isotopes, which are inconvenient owing to the effects of radioactivity. In the present study, the binding affinities of five cannabinoids for purified CB1 were measured using a surface plasmon resonance (SPR) technique as a putative non-isotopic receptor binding assay. Results were compared with those of a radio-isotope-labeled receptor binding assay. The representative natural cannabinoid Δ9-tetrahydrocannabinol and four synthetic cannabinoids, JWH-015, JWH-210, RCS-4, and JWH-250, were assessed using both the SPR biosensor assay and the conventional isotopic receptor binding assay. The binding affinities of the test substances to CB1 were determined to be (from highest to lowest) 9.52 × 10-13 M (JWH-210), 6.54 × 10-12 M (JWH-250), 1.56 × 10-11 M (Δ9-tetrahydrocannabinol), 2.75 × 10-11 M (RCS-4), and 6.80 ×10-11 M (JWH-015) using the non-isotopic method. Using the conventional isotopic receptor binding assay, the same order of affinities was observed. In conclusion, our results support the use of kinetic analysis via SPR in place of the isotopic receptor binding assay. To replace the receptor binding affinity assay with SPR techniques in routine assays, further studies for method validation will be needed in the future.
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Affiliation(s)
- Hye Jin Cha
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Chungju,
Korea
| | - Yun Jeong Song
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Chungju,
Korea
| | - Da Eun Lee
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Chungju,
Korea
| | - Young-Hoon Kim
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Chungju,
Korea
| | - Jisoon Shin
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Chungju,
Korea
| | - Choon-Gon Jang
- Department of Pharmacology, School of Pharmacy, Sungkyunkwan University, Suwon,
Korea
| | - Soo Kyung Suh
- Pharmacological Research Division, Toxicological Evaluation and Research Department, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Chungju,
Korea
| | - Sung Jin Kim
- Cosmetics Policy Division, Ministry of Food and Drug Safety, Chungju,
Korea
| | - Jaesuk Yun
- Neuroimmunology Lab, College of Pharmacy, Wonkwang University, Iksan,
Korea
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Diez-Alarcia R, Ibarra-Lecue I, Lopez-Cardona ÁP, Meana J, Gutierrez-Adán A, Callado LF, Agirregoitia E, Urigüen L. Biased Agonism of Three Different Cannabinoid Receptor Agonists in Mouse Brain Cortex. Front Pharmacol 2016; 7:415. [PMID: 27867358 PMCID: PMC5095132 DOI: 10.3389/fphar.2016.00415] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 10/19/2016] [Indexed: 12/29/2022] Open
Abstract
Cannabinoid receptors are able to couple to different families of G proteins when activated by an agonist drug. It has been suggested that different intracellular responses may be activated depending on the ligand. The goal of the present study was to characterize the pattern of G protein subunit stimulation triggered by three different cannabinoid ligands, Δ9-THC, WIN55212-2, and ACEA in mouse brain cortex. Stimulation of the [35S]GTPγS binding coupled to specific immunoprecipitation with antibodies against different subtypes of G proteins (Gαi1, Gαi2, Gαi3, Gαo, Gαz, Gαs, Gαq/11, and Gα12/13), in the presence of Δ9-THC, WIN55212-2 and ACEA (submaximal concentration 10 μM) was determined by scintillation proximity assay (SPA) technique in mouse cortex of wild type, CB1 knock-out, CB2 knock-out and CB1/CB2 double knock-out mice. Results show that, in mouse brain cortex, cannabinoid agonists are able to significantly stimulate not only the classical inhibitory Gαi/o subunits but also other G subunits like Gαz, Gαq/11, and Gα12/13. Moreover, the specific pattern of G protein subunit activation is different depending on the ligand. In conclusion, our results demonstrate that, in mice brain native tissue, different exogenous cannabinoid ligands are able to selectively activate different inhibitory and non-inhibitory Gα protein subtypes, through the activation of CB1 and/or CB2 receptors. Results of the present study may help to understand the specific molecular pathways involved in the pharmacological effects of cannabinoid-derived drugs.
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Affiliation(s)
- Rebeca Diez-Alarcia
- Department of Pharmacology, University of the Basque Country UPV/EHULeioa, Spain; Centro de Investigación Biomédica en Red de Salud MentalMadrid, Spain
| | - Inés Ibarra-Lecue
- Department of Pharmacology, University of the Basque Country UPV/EHU Leioa, Spain
| | - Ángela P Lopez-Cardona
- Department of Animal Reproduction, Instituto Nacional de Tecnología Agraria y AlimentariaMadrid, Spain; G.I. Biogénesis, Universidad de AntioquiaAntioquia, Colombia
| | - Javier Meana
- Department of Pharmacology, University of the Basque Country UPV/EHULeioa, Spain; Centro de Investigación Biomédica en Red de Salud MentalMadrid, Spain
| | - Alfonso Gutierrez-Adán
- Department of Animal Reproduction, Instituto Nacional de Tecnología Agraria y Alimentaria Madrid, Spain
| | - Luis F Callado
- Department of Pharmacology, University of the Basque Country UPV/EHULeioa, Spain; Centro de Investigación Biomédica en Red de Salud MentalMadrid, Spain
| | | | - Leyre Urigüen
- Department of Pharmacology, University of the Basque Country UPV/EHULeioa, Spain; Centro de Investigación Biomédica en Red de Salud MentalMadrid, Spain
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Presley CS, Abidi AH, Moore BM. Optimization of cAMP fluorescence dataset from ACTOne cannabinoid receptor 1 cell line. Data Brief 2016; 7:1118-23. [PMID: 27115025 PMCID: PMC4833130 DOI: 10.1016/j.dib.2016.03.086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/11/2016] [Accepted: 03/26/2016] [Indexed: 11/26/2022] Open
Abstract
The ACTOne cannabinoid receptor 1 functional system is comprised of transfected HEK cells with the parental cyclic nucleotide gated channel (CNG) co-transfected with cannabinoid receptor 1 (CB1). The ACTOne CB1 cell line was evaluated for cAMP driven fluorescence by optimizing experimental conditions for sensitivity to forskolin and CP 55,940, reading time point, reliability of cell passage number, and pertussis inactivation of Gi/o.
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Affiliation(s)
- Chaela S Presley
- University of Tennessee Health Science Center, College of Pharmacy, United States
| | - Ammaar H Abidi
- University of Tennessee Health Science Center, College of Pharmacy, United States
| | - Bob M Moore
- University of Tennessee Health Science Center, College of Pharmacy, United States
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