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Jiang J, Hou X, Gu L, Liu X, Lv H, Xiong J, Kuang H, Jiang X, Hong S. Disrupted Balance of Short- and Long-Range Functional Connectivity Density in Patients with Herpes Zoster or Postherpetic Neuralgia: A Resting-State fMRI Study. J Pain Res 2024; 17:2753-2765. [PMID: 39206100 PMCID: PMC11352612 DOI: 10.2147/jpr.s472349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 08/18/2024] [Indexed: 09/04/2024] Open
Abstract
Purpose This study aimed to explore the abnormal changes in short- and long-range functional connectivity density (FCD) in patients with herpes zoster (HZ) and postherpetic neuralgia (PHN). Patients and Methods Twenty HZ patients, 22 PHN patients, and 19 well-matched healthy controls (HCs) underwent resting-state functional magnetic resonance imaging scans. We used FCD mapping, a data-driven graph theory method, to investigate local and global functional connectivity patterns. Both short- and long-range FCD were calculated and compared among the PHN, HZ, and HC groups. Then, the abnormal regions were used to calculate seed-based functional connectivity. Finally, correlation analyses were performed between the altered FCD values and clinical datas. Results Compared with HCs, HZ patients showed significantly increased long-range FCD of the bilateral cerebellum, thalamus, parahippocampal gyrus, superior temporal gyrus and lingual gyrus. HZ patients also displayed significantly decreased short-range FCD of the bilateral posterior cingulate gyrus, median cingulate/paracingulate gyri, and left precuneus. Compared with HCs, PHN patients displayed significantly decreased long-range FCD of the bilateral superior frontal gyrus and decreased short-range FCD in the bilateral posterior cingulate gyrus, median cingulate/paracingulate gyri, and precuneus. However, there was no significant difference in either long-range or short-range FCD between the PHN and HZ patients. Long-range FCD deficit areas and the right insula showed altered functional connectivity in PHN patients. Furthermore, pain duration in patients with PHN was correlated with abnormal long-range FCD. Conclusion Herpes zoster pain widely affects intra- and inter-regional functional connectivity, leading to disrupted short-range FCD and increased long-range FCD during different stages of the disease. Long-term chronic pain in PHN patients may impair the pain emotion regulation pathway. These findings could improve our understanding of the pathophysiological mechanisms of HZ and PHN and offer neuroimaging markers for HZ and PHN.
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Affiliation(s)
- Jian Jiang
- Department of Radiology, The First Affiliated Hospital, Nanchang University, Nanchang, People’s Republic of China
- Jiangxi Medical Imaging Research Institute, Nanchang, People’s Republic of China
| | - Xiaoyan Hou
- Department of Radiology, The First Affiliated Hospital, Nanchang University, Nanchang, People’s Republic of China
| | - Lili Gu
- Department of Pain, The First Affiliated Hospital, Nanchang University, Nanchang, People’s Republic of China
| | - Xian Liu
- Department of Radiology, The First Affiliated Hospital, Nanchang University, Nanchang, People’s Republic of China
| | - Huiting Lv
- Department of Radiology, The First Affiliated Hospital, Nanchang University, Nanchang, People’s Republic of China
| | - Jiaxin Xiong
- Department of Radiology, The First Affiliated Hospital, Nanchang University, Nanchang, People’s Republic of China
| | - Hongmei Kuang
- Department of Radiology, The First Affiliated Hospital, Nanchang University, Nanchang, People’s Republic of China
- Jiangxi Medical Imaging Research Institute, Nanchang, People’s Republic of China
| | - Xiaofeng Jiang
- Department of Radiology, The First Affiliated Hospital, Nanchang University, Nanchang, People’s Republic of China
| | - Shunda Hong
- Department of Radiology, The First Affiliated Hospital, Nanchang University, Nanchang, People’s Republic of China
- Jiangxi Medical Imaging Research Institute, Nanchang, People’s Republic of China
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2
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Franchini L, Porter JJ, Lueck JD, Orlandi C. Gz Enhanced Signal Transduction assaY (G ZESTY) for GPCR deorphanization. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.26.605282. [PMID: 39091869 PMCID: PMC11291178 DOI: 10.1101/2024.07.26.605282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 08/04/2024]
Abstract
G protein-coupled receptors (GPCRs) are key pharmacological targets, yet many remain underutilized due to unknown activation mechanisms and ligands. Orphan GPCRs, lacking identified natural ligands, are a high priority for research, as identifying their ligands will aid in understanding their functions and potential as drug targets. Most GPCRs, including orphans, couple to Gi/o/z family members, however current assays to detect their activation are limited, hindering ligand identification efforts. We introduce GZESTY, a highly sensitive, cell-based assay developed in an easily deliverable format designed to study the pharmacology of Gi/o/z-coupled GPCRs and assist in deorphanization. We optimized assay conditions and developed an all-in-one vector employing novel cloning methods to ensure the correct expression ratio of GZESTY components. GZESTY successfully assessed activation of a library of ligand-activated GPCRs, detecting both full and partial agonism, as well as responses from endogenous GPCRs. Notably, with GZESTY we established the presence of endogenous ligands for GPR176 and GPR37 in brain extracts, validating its use in deorphanization efforts. This assay enhances the ability to find ligands for orphan GPCRs, expanding the toolkit for GPCR pharmacologists.
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Affiliation(s)
- Luca Franchini
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Joseph J. Porter
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - John D. Lueck
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Cesare Orlandi
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY 14642, USA
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Birgül Iyison N, Abboud C, Abboud D, Abdulrahman AO, Bondar AN, Dam J, Georgoussi Z, Giraldo J, Horvat A, Karoussiotis C, Paz-Castro A, Scarpa M, Schihada H, Scholz N, Güvenc Tuna B, Vardjan N. ERNEST COST action overview on the (patho)physiology of GPCRs and orphan GPCRs in the nervous system. Br J Pharmacol 2024. [PMID: 38825750 DOI: 10.1111/bph.16389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 02/09/2024] [Accepted: 02/24/2024] [Indexed: 06/04/2024] Open
Abstract
G protein-coupled receptors (GPCRs) are a large family of cell surface receptors that play a critical role in nervous system function by transmitting signals between cells and their environment. They are involved in many, if not all, nervous system processes, and their dysfunction has been linked to various neurological disorders representing important drug targets. This overview emphasises the GPCRs of the nervous system, which are the research focus of the members of ERNEST COST action (CA18133) working group 'Biological roles of signal transduction'. First, the (patho)physiological role of the nervous system GPCRs in the modulation of synapse function is discussed. We then debate the (patho)physiology and pharmacology of opioid, acetylcholine, chemokine, melatonin and adhesion GPCRs in the nervous system. Finally, we address the orphan GPCRs, their implication in the nervous system function and disease, and the challenges that need to be addressed to deorphanize them.
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Affiliation(s)
- Necla Birgül Iyison
- Department of Molecular Biology and Genetics, University of Bogazici, Istanbul, Turkey
| | - Clauda Abboud
- Laboratory of Molecular Pharmacology, GIGA-Molecular Biology of Diseases, University of Liege, Liege, Belgium
| | - Dayana Abboud
- Laboratory of Molecular Pharmacology, GIGA-Molecular Biology of Diseases, University of Liege, Liege, Belgium
| | | | - Ana-Nicoleta Bondar
- Faculty of Physics, University of Bucharest, Magurele, Romania
- Forschungszentrum Jülich, Institute for Computational Biomedicine (IAS-5/INM-9), Jülich, Germany
| | - Julie Dam
- Institut Cochin, CNRS, INSERM, Université Paris Cité, Paris, France
| | - Zafiroula Georgoussi
- Laboratory of Cellular Signalling and Molecular Pharmacology, Institute of Biosciences and Applications, National Center for Scientific Research "Demokritos", Athens, Greece
| | - Jesús Giraldo
- Laboratory of Molecular Neuropharmacology and Bioinformatics, Unitat de Bioestadística and Institut de Neurociències, Universitat Autònoma de Barcelona, Bellaterra, Spain
- Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Madrid, Spain
- Unitat de Neurociència Traslacional, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí (I3PT), Institut de Neurociències, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Anemari Horvat
- Laboratory of Neuroendocrinology - Molecular Cell Physiology, Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
- Laboratory of Cell Engineering, Celica Biomedical, Ljubljana, Slovenia
| | - Christos Karoussiotis
- Laboratory of Cellular Signalling and Molecular Pharmacology, Institute of Biosciences and Applications, National Center for Scientific Research "Demokritos", Athens, Greece
| | - Alba Paz-Castro
- Molecular Pharmacology of GPCRs research group, Center for Research in Molecular Medicine and Chronic Diseases (CiMUS), Universidade de Santiago de Compostela, Santiago, Spain
- Instituto de Investigación Sanitaria de Santiago de Compostela (IDIS), Santiago, Spain
| | - Miriam Scarpa
- Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Hannes Schihada
- Department of Pharmaceutical Chemistry, Philipps-University Marburg, Marburg, Germany
| | - Nicole Scholz
- Rudolf Schönheimer Institute of Biochemistry, Division of General Biochemistry, Medical Faculty, Leipzig University, Leipzig, Germany
| | - Bilge Güvenc Tuna
- Department of Biophysics, School of Medicine, Yeditepe University, Istanbul, Turkey
| | - Nina Vardjan
- Laboratory of Neuroendocrinology - Molecular Cell Physiology, Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
- Laboratory of Cell Engineering, Celica Biomedical, Ljubljana, Slovenia
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Schafer RM, Giancotti LA, Davis DJ, Larrea IG, Farr SA, Salvemini D. Behavioral characterization of G-protein-coupled receptor 160 knockout mice. Pain 2024; 165:1361-1371. [PMID: 38198232 PMCID: PMC11090760 DOI: 10.1097/j.pain.0000000000003136] [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: 07/10/2023] [Accepted: 09/23/2023] [Indexed: 01/12/2024]
Abstract
ABSTRACT Neuropathic pain is a devastating condition where current therapeutics offer little to no pain relief. Novel nonnarcotic therapeutic targets are needed to address this growing medical problem. Our work identified the G-protein-coupled receptor 160 (GPR160) as a potential target for therapeutic intervention. However, the lack of small-molecule ligands for GPR160 hampers our understanding of its role in health and disease. To address this void, we generated a global Gpr160 knockout (KO) mouse using CRISPR-Cas9 genome editing technology to validate the contributions of GPR160 in nociceptive behaviors in mice. Gpr160 KO mice are healthy and fertile, with no observable physical abnormalities. Gpr160 KO mice fail to develop behavioral hypersensitivities in a model of neuropathic pain caused by constriction of the sciatic nerve. On the other hand, responses of Gpr160 KO mice in the hot-plate and tail-flick assays are not affected. We recently deorphanized GPR160 and identified cocaine- and amphetamine-regulated transcript peptide (CARTp) as a potential ligand. Using Gpr160 KO mice, we now report that the development of behavioral hypersensitivities after intrathecal or intraplantar injections of CARTp are dependent on GPR160. Cocaine- and amphetamine-regulated transcript peptide plays a role in various affective behaviors, such as anxiety, depression, and cognition. There are no differences in learning, memory, and anxiety between Gpr160 KO mice and their age-matched and sex-matched control floxed mice. Results from these studies support the pronociceptive roles of CARTp/GPR160 and GPR160 as a potential therapeutic target for treatment of neuropathic pain.
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Affiliation(s)
- Rachel M Schafer
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
| | - Luigino A Giancotti
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
| | - Daniel J Davis
- Animal Modeling Core, University of Missouri, Columbia, Missouri, USA
| | - Ivonne G Larrea
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
| | - Susan A Farr
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
- Department of Internal Medicine-Geriatrics, Saint Louis School of Medicine, St. Louis, MO, USA
- VA Medical Center, St Louis. MO 63106, USA
| | - Daniela Salvemini
- Department of Pharmacology and Physiology School of Medicine and Institute for Translational Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd. 63104, St. Louis, Missouri, USA
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5
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Zheng YS, Liu YL, Xu ZG, He C, Guo ZY. Is myeloid-derived growth factor a ligand of the sphingosine-1-phosphate receptor 2? Biochem Biophys Res Commun 2024; 706:149766. [PMID: 38484568 DOI: 10.1016/j.bbrc.2024.149766] [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: 02/25/2024] [Accepted: 03/08/2024] [Indexed: 03/24/2024]
Abstract
Secretory myeloid-derived growth factor (MYDGF) exerts beneficial effects on organ repair, probably via a plasma membrane receptor; however, the identity of the expected receptor has remained elusive. In a recent study, MYDGF was reported as an agonist of the sphingosine-1-phosphate receptor 2 (S1PR2), an A-class G protein-coupled receptor that mediates the functions of the signaling lipid, sphingosine-1-phosphate (S1P). In the present study, we conducted living cell-based functional assays to test whether S1PR2 is a receptor for MYDGF. In the NanoLuc Binary Technology (NanoBiT)-based β-arrestin recruitment assay and the cAMP-response element (CRE)-controlled NanoLuc reporter assay, S1P could efficiently activate human S1PR2 overexpressed in human embryonic kidney (HEK) 293T cells; however, recombinant human MYDGF, overexpressed either from Escherichia coli or HEK293 cells, had no detectable effect. Thus, the results demonstrated that human MYDGF is not a ligand of human S1PR2. Considering the high conservation of MYDGF and S1PR2 in evolution, MYDGF is also probably not a ligand of S1PR2 in other vertebrates.
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Affiliation(s)
- Yong-Shan Zheng
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China; Shanghai Institute of Biological Products Co., Ltd., Shanghai, China
| | - Ya-Li Liu
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Zeng-Guang Xu
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Cheng He
- Shanghai Institute of Biological Products Co., Ltd., Shanghai, China.
| | - Zhan-Yun Guo
- Research Center for Translational Medicine at East Hospital, School of Life Sciences and Technology, Tongji University, Shanghai, China.
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6
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Strnadová V, Pačesová A, Charvát V, Šmotková Z, Železná B, Kuneš J, Maletínská L. Anorexigenic neuropeptides as anti-obesity and neuroprotective agents: exploring the neuroprotective effects of anorexigenic neuropeptides. Biosci Rep 2024; 44:BSR20231385. [PMID: 38577975 PMCID: PMC11043025 DOI: 10.1042/bsr20231385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/26/2024] [Accepted: 04/05/2024] [Indexed: 04/06/2024] Open
Abstract
Since 1975, the incidence of obesity has increased to epidemic proportions, and the number of patients with obesity has quadrupled. Obesity is a major risk factor for developing other serious diseases, such as type 2 diabetes mellitus, hypertension, and cardiovascular diseases. Recent epidemiologic studies have defined obesity as a risk factor for the development of neurodegenerative diseases, such as Alzheimer's disease (AD) and other types of dementia. Despite all these serious comorbidities associated with obesity, there is still a lack of effective antiobesity treatment. Promising candidates for the treatment of obesity are anorexigenic neuropeptides, which are peptides produced by neurons in brain areas implicated in food intake regulation, such as the hypothalamus or the brainstem. These peptides efficiently reduce food intake and body weight. Moreover, because of the proven interconnection between obesity and the risk of developing AD, the potential neuroprotective effects of these two agents in animal models of neurodegeneration have been examined. The objective of this review was to explore anorexigenic neuropeptides produced and acting within the brain, emphasizing their potential not only for the treatment of obesity but also for the treatment of neurodegenerative disorders.
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Affiliation(s)
- Veronika Strnadová
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Andrea Pačesová
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Vilém Charvát
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Zuzana Šmotková
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Blanka Železná
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Jaroslav Kuneš
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
- Department of Biochemistry and Molecular Biology, Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic
| | - Lenka Maletínská
- Department of Biochemistry and Molecular Biology, Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Prague, Czech Republic
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7
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Xu C, Wang Y, Ni H, Yao M, Cheng L, Lin X. The role of orphan G protein-coupled receptors in pain. Heliyon 2024; 10:e28818. [PMID: 38590871 PMCID: PMC11000026 DOI: 10.1016/j.heliyon.2024.e28818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 03/22/2024] [Accepted: 03/25/2024] [Indexed: 04/10/2024] Open
Abstract
G protein-coupled receptors (GPCRs), which form the largest family of membrane protein receptors in humans, are highly complex signaling systems with intricate structures and dynamic conformations and locations. Among these receptors, a specific subset is referred to as orphan GPCRs (oGPCRs) and has garnered significant interest in pain research due to their role in both central and peripheral nervous system function. The diversity of GPCR functions is attributed to multiple factors, including allosteric modulators, signaling bias, oligomerization, constitutive signaling, and compartmentalized signaling. This review primarily focuses on the recent advances in oGPCR research on pain mechanisms, discussing the role of specific oGPCRs including GPR34, GPR37, GPR65, GPR83, GPR84, GPR85, GPR132, GPR151, GPR160, GPR171, GPR177, and GPR183. The orphan receptors among these receptors associated with central nervous system diseases are also briefly described. Understanding the functions of these oGPCRs can contribute not only to a deeper understanding of pain mechanisms but also offer a reference for discovering new targets for pain treatment.
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Affiliation(s)
- Chengfei Xu
- Department of Anesthesiology, The Third People's Hospital of Bengbu, Bengbu, 233000, PR China
| | - Yahui Wang
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical University, Bengbu, 233000, PR China
| | - Huadong Ni
- Department of Anesthesiology and Pain Research Center, Affiliated Hospital of Jiaxing University, Jiaxing, 314000, PR China
| | - Ming Yao
- Department of Anesthesiology and Pain Research Center, Affiliated Hospital of Jiaxing University, Jiaxing, 314000, PR China
| | - Liang Cheng
- Department of Anesthesiology, The Third People's Hospital of Bengbu, Bengbu, 233000, PR China
| | - Xuewu Lin
- Department of Anesthesiology, The First Affiliated Hospital of Bengbu Medical University, Bengbu, 233000, PR China
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8
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Anversa RG, Maddern XJ, Lawrence AJ, Walker LC. Orphan peptide and G protein-coupled receptor signalling in alcohol use disorder. Br J Pharmacol 2024; 181:595-609. [PMID: 38073127 PMCID: PMC10953447 DOI: 10.1111/bph.16301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 11/22/2023] [Accepted: 11/28/2023] [Indexed: 01/10/2024] Open
Abstract
Neuropeptides and G protein-coupled receptors (GPCRs) have long been, and continue to be, one of the most popular target classes for drug discovery in CNS disorders, including alcohol use disorder (AUD). Yet, orphaned neuropeptide systems and receptors (oGPCR), which have no known cognate receptor or ligand, remain understudied in drug discovery and development. Orphan neuropeptides and oGPCRs are abundantly expressed within the brain and represent an unprecedented opportunity to address brain function and may hold potential as novel treatments for disease. Here, we describe the current literature regarding orphaned neuropeptides and oGPCRs implicated in AUD. Specifically, in this review, we focus on the orphaned neuropeptide cocaine- and amphetamine-regulated transcript (CART), and several oGPCRs that have been directly implicated in AUD (GPR6, GPR26, GPR88, GPR139, GPR158) and discuss their potential and pitfalls as novel treatments, and progress in identifying their cognate receptors or ligands.
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Affiliation(s)
- Roberta Goncalves Anversa
- Florey Institute of Neuroscience and Mental HealthMelbourneVICAustralia
- Florey Department of Neuroscience and Mental HealthUniversity of MelbourneMelbourneVICAustralia
| | - Xavier J. Maddern
- Florey Institute of Neuroscience and Mental HealthMelbourneVICAustralia
- Florey Department of Neuroscience and Mental HealthUniversity of MelbourneMelbourneVICAustralia
| | - Andrew J. Lawrence
- Florey Institute of Neuroscience and Mental HealthMelbourneVICAustralia
- Florey Department of Neuroscience and Mental HealthUniversity of MelbourneMelbourneVICAustralia
| | - Leigh C. Walker
- Florey Institute of Neuroscience and Mental HealthMelbourneVICAustralia
- Florey Department of Neuroscience and Mental HealthUniversity of MelbourneMelbourneVICAustralia
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9
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Ye C, Zhou Q, Lin S, Yang W, Cai X, Mai Y, Chen Y, Yang D, Wang MW. High expression of GPR160 in prostate cancer is unrelated to CARTp-mediated signaling pathways. Acta Pharm Sin B 2024; 14:1467-1471. [PMID: 38487007 PMCID: PMC10935005 DOI: 10.1016/j.apsb.2023.11.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/31/2023] [Accepted: 11/20/2023] [Indexed: 03/17/2024] Open
Affiliation(s)
- Chenyu Ye
- Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
| | - Qingtong Zhou
- Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Research Center for Deepsea Bioresources, Sanya 572025, China
| | - Shi Lin
- Research Center for Deepsea Bioresources, Sanya 572025, China
| | - Wensheng Yang
- Department of Pharmacy, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai 201102, China
| | - Xiaoqing Cai
- State Key Laboratory of Chemical Biology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yiting Mai
- Research Center for Deepsea Bioresources, Sanya 572025, China
| | - Yanyan Chen
- Research Center for Deepsea Bioresources, Sanya 572025, China
| | - Dehua Yang
- Research Center for Deepsea Bioresources, Sanya 572025, China
- State Key Laboratory of Chemical Biology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- The National Center for Drug Screening, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ming-Wei Wang
- Department of Pharmacology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, China
- Research Center for Deepsea Bioresources, Sanya 572025, China
- Department of Chemistry, School of Science, the University of Tokyo, Tokyo 113-0033, Japan
- School of Pharmacy, Hainan Medical University, Haikou 571199, China
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10
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Giancotti LA, Lauro F, Olayide I, Zhang J, Arnatt CK, Salvemini D. 12-(S)-Hydroxyeicosatetraenoic Acid and GPR31 Signaling in Spinal Cord in Neuropathic Pain. J Pharmacol Exp Ther 2024; 388:765-773. [PMID: 38278551 DOI: 10.1124/jpet.123.001853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 01/28/2024] Open
Abstract
Neuropathic pain is a pressing unmet medical need requiring novel nonopioid-based therapeutic approaches. Using unbiased transcriptomic analysis, we found that the expression of Gpr31, a G protein-coupled receptor, increased in the dorsal horn of the spinal cord in rats with traumatic nerve injury-induced neuropathic pain. Daily intrathecal injections of siGpr31 reversed behavioral hypersensitivities in a time-dependent manner. GPR31, a Gα i protein-coupled receptor, has recently been cloned and is a receptor for 12-(S)-hydroxyeicosatetraenoic acid [12-(S)-HETE]. The lack of commercially available GPR31 antagonists has hampered the understanding of this receptor in pathophysiological states, including pain. To investigate this, our first approach was to identify novel GPR31 antagonists. Using a multidisciplinary approach, including in silico modeling, we identified the first highly potent and selective small-molecule GPR31 antagonist, SAH2. Here, we characterize the pharmacological activity in well-described models of neuropathic pain in rodents and provide evidence that 12-(S)-HETE/GPR31-dependent behavioral hypersensitivities are mediated through mitogen-activated protein kinase (MAPK) activation in the spinal cord. Our studies provide the pharmacological rationale for investigating contributions of GPR31 along the pain neuroaxis and the development of nonopioid GPR31-targeted strategies. SIGNIFICANCE STATEMENT: We have identified the first highly selective GPR31 antagonist. Using this antagonist, we have demonstrated that GPR31 signaling in the spinal cord is pronociceptive and MAPK pathways provided signaling mechanisms downstream of GPR31 activation in these processes.
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Affiliation(s)
- Luigino Antonio Giancotti
- Department of Pharmacology and Physiology School of Medicine (L.A.G., F.L., J.Z., C.K.A., D.S.), Institute for Translational Neuroscience (L.A.G., F.L., J.Z., C.K.A., D.S.), and Department of Chemistry (I.O., C.K.A.), Saint Louis University, St. Louis, Missouri
| | - Filomena Lauro
- Department of Pharmacology and Physiology School of Medicine (L.A.G., F.L., J.Z., C.K.A., D.S.), Institute for Translational Neuroscience (L.A.G., F.L., J.Z., C.K.A., D.S.), and Department of Chemistry (I.O., C.K.A.), Saint Louis University, St. Louis, Missouri
| | - Israel Olayide
- Department of Pharmacology and Physiology School of Medicine (L.A.G., F.L., J.Z., C.K.A., D.S.), Institute for Translational Neuroscience (L.A.G., F.L., J.Z., C.K.A., D.S.), and Department of Chemistry (I.O., C.K.A.), Saint Louis University, St. Louis, Missouri
| | - Jinsong Zhang
- Department of Pharmacology and Physiology School of Medicine (L.A.G., F.L., J.Z., C.K.A., D.S.), Institute for Translational Neuroscience (L.A.G., F.L., J.Z., C.K.A., D.S.), and Department of Chemistry (I.O., C.K.A.), Saint Louis University, St. Louis, Missouri
| | - Christopher Kent Arnatt
- Department of Pharmacology and Physiology School of Medicine (L.A.G., F.L., J.Z., C.K.A., D.S.), Institute for Translational Neuroscience (L.A.G., F.L., J.Z., C.K.A., D.S.), and Department of Chemistry (I.O., C.K.A.), Saint Louis University, St. Louis, Missouri
| | - Daniela Salvemini
- Department of Pharmacology and Physiology School of Medicine (L.A.G., F.L., J.Z., C.K.A., D.S.), Institute for Translational Neuroscience (L.A.G., F.L., J.Z., C.K.A., D.S.), and Department of Chemistry (I.O., C.K.A.), Saint Louis University, St. Louis, Missouri
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11
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Scharf MM, Humphrys LJ, Berndt S, Di Pizio A, Lehmann J, Liebscher I, Nicoli A, Niv MY, Peri L, Schihada H, Schulte G. The dark sides of the GPCR tree - research progress on understudied GPCRs. Br J Pharmacol 2024. [PMID: 38339984 DOI: 10.1111/bph.16325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/24/2023] [Accepted: 01/08/2024] [Indexed: 02/12/2024] Open
Abstract
A large portion of the human GPCRome is still in the dark and understudied, consisting even of entire subfamilies of GPCRs such as odorant receptors, class A and C orphans, adhesion GPCRs, Frizzleds and taste receptors. However, it is undeniable that these GPCRs bring an untapped therapeutic potential that should be explored further. Open questions on these GPCRs span diverse topics such as deorphanisation, the development of tool compounds and tools for studying these GPCRs, as well as understanding basic signalling mechanisms. This review gives an overview of the current state of knowledge for each of the diverse subfamilies of understudied receptors regarding their physiological relevance, molecular mechanisms, endogenous ligands and pharmacological tools. Furthermore, it identifies some of the largest knowledge gaps that should be addressed in the foreseeable future and lists some general strategies that might be helpful in this process.
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Affiliation(s)
- Magdalena M Scharf
- Karolinska Institutet, Dept. Physiology & Pharmacology, Sec. Receptor Biology & Signaling, Stockholm, Sweden
| | - Laura J Humphrys
- Institute of Pharmacy, University of Regensburg, Regensburg, Germany
| | - Sandra Berndt
- Rudolf Schönheimer Institute for Biochemistry, Molecular Biochemistry, University of Leipzig, Leipzig, Germany
| | - Antonella Di Pizio
- Leibniz Institute for Food Systems Biology at the Technical University of Munich, Freising, Germany
- Chemoinformatics and Protein Modelling, Department of Molecular Life Science, School of Life Science, Technical University of Munich, Freising, Germany
| | - Juliane Lehmann
- Rudolf Schönheimer Institute for Biochemistry, Molecular Biochemistry, University of Leipzig, Leipzig, Germany
| | - Ines Liebscher
- Rudolf Schönheimer Institute for Biochemistry, Molecular Biochemistry, University of Leipzig, Leipzig, Germany
| | - Alessandro Nicoli
- Leibniz Institute for Food Systems Biology at the Technical University of Munich, Freising, Germany
- Chemoinformatics and Protein Modelling, Department of Molecular Life Science, School of Life Science, Technical University of Munich, Freising, Germany
| | - Masha Y Niv
- The Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Lior Peri
- The Institute of Biochemistry, Food Science and Nutrition, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Hannes Schihada
- Institute of Pharmaceutical Chemistry, Philipps-University Marburg, Marburg, Germany
| | - Gunnar Schulte
- Karolinska Institutet, Dept. Physiology & Pharmacology, Sec. Receptor Biology & Signaling, Stockholm, Sweden
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12
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Song J, Choi SY. Arcuate Nucleus of the Hypothalamus: Anatomy, Physiology, and Diseases. Exp Neurobiol 2023; 32:371-386. [PMID: 38196133 PMCID: PMC10789173 DOI: 10.5607/en23040] [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: 12/10/2023] [Revised: 12/24/2023] [Accepted: 12/27/2023] [Indexed: 01/11/2024] Open
Abstract
The hypothalamus is part of the diencephalon and has several nuclei, one of which is the arcuate nucleus. The arcuate nucleus of hypothalamus (ARH) consists of neuroendocrine neurons and centrally-projecting neurons. The ARH is the center where the homeostasis of nutrition/metabolism and reproduction are maintained. As such, dysfunction of the ARH can lead to disorders of nutrition/metabolism and reproduction. Here, we review various types of neurons in the ARH and several genetic disorders caused by mutations in the ARH.
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Affiliation(s)
- Juhyun Song
- Department of Anatomy, Chonnam National University Medical School, Hwasun 58128, Korea
| | - Seok-Yong Choi
- Department of Biomedical Sciences, Chonnam National University Medical School, Hwasun 58128, Korea
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13
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Langlieb J, Sachdev NS, Balderrama KS, Nadaf NM, Raj M, Murray E, Webber JT, Vanderburg C, Gazestani V, Tward D, Mezias C, Li X, Flowers K, Cable DM, Norton T, Mitra P, Chen F, Macosko EZ. The molecular cytoarchitecture of the adult mouse brain. Nature 2023; 624:333-342. [PMID: 38092915 PMCID: PMC10719111 DOI: 10.1038/s41586-023-06818-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 11/01/2023] [Indexed: 12/17/2023]
Abstract
The function of the mammalian brain relies upon the specification and spatial positioning of diversely specialized cell types. Yet, the molecular identities of the cell types and their positions within individual anatomical structures remain incompletely known. To construct a comprehensive atlas of cell types in each brain structure, we paired high-throughput single-nucleus RNA sequencing with Slide-seq1,2-a recently developed spatial transcriptomics method with near-cellular resolution-across the entire mouse brain. Integration of these datasets revealed the cell type composition of each neuroanatomical structure. Cell type diversity was found to be remarkably high in the midbrain, hindbrain and hypothalamus, with most clusters requiring a combination of at least three discrete gene expression markers to uniquely define them. Using these data, we developed a framework for genetically accessing each cell type, comprehensively characterized neuropeptide and neurotransmitter signalling, elucidated region-specific specializations in activity-regulated gene expression and ascertained the heritability enrichment of neurological and psychiatric phenotypes. These data, available as an online resource ( www.BrainCellData.org ), should find diverse applications across neuroscience, including the construction of new genetic tools and the prioritization of specific cell types and circuits in the study of brain diseases.
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Affiliation(s)
| | | | | | - Naeem M Nadaf
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Mukund Raj
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | - Evan Murray
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
| | | | | | | | - Daniel Tward
- Departments of Computational Medicine and Neurology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Chris Mezias
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA
| | - Xu Li
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA
| | | | - Dylan M Cable
- Broad Institute of Harvard and MIT, Cambridge, MA, USA
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA
| | | | - Partha Mitra
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA
| | - Fei Chen
- Broad Institute of Harvard and MIT, Cambridge, MA, USA.
- Harvard Stem Cell and Regenerative Biology, Cambridge, MA, USA.
| | - Evan Z Macosko
- Broad Institute of Harvard and MIT, Cambridge, MA, USA.
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA, USA.
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14
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Mizrak D, Zhao Y, Feng H, Macaulay J, Tang Y, Sultan Z, Zhao G, Guo Y, Zhang J, Yang B, Eugene Chen Y. Single-Molecule Spatial Transcriptomics of Human Thoracic Aortic Aneurysms Uncovers Calcification-Related CARTPT-Expressing Smooth Muscle Cells. Arterioscler Thromb Vasc Biol 2023; 43:2285-2297. [PMID: 37823268 PMCID: PMC10842613 DOI: 10.1161/atvbaha.123.319329] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 09/28/2023] [Indexed: 10/13/2023]
Abstract
BACKGROUND Although single-cell RNA-sequencing is commonly applied to dissect the heterogeneity in human tissues, it involves the preparation of single-cell suspensions via cell dissociation, causing loss of spatial information. In this study, we employed high-resolution single-cell transcriptome imaging to reveal rare smooth muscle cell (SMC) types in human thoracic aortic aneurysm (TAA) tissue samples. METHODS Single-molecule spatial distribution of transcripts from 140 genes was analyzed in fresh-frozen human TAA samples with region and sex-matched controls. In vitro studies and tissue staining were performed to examine human CART prepropeptide (CARTPT) regulation and function. RESULTS We captured thousands of cells per sample including a spatially distinct CARTPT-expressing SMC subtype enriched in male TAA samples. Immunoassays confirmed human CART (cocaine- and amphetamine-regulated transcript) protein enrichment in male TAA tissue and truncated CARTPT secretion into cell culture medium. Oxidized low-density lipoprotein, a cardiovascular risk factor, induced CARTPT expression, whereas CARTPT overexpression in human aortic SMCs increased the expression of key osteochondrogenic transcription factors and reduced contractile gene expression. Recombinant human CART treatment of human SMCs further confirmed this phenotype. Alizarin red staining revealed calcium deposition in male TAA samples showing similar localization with human CART staining. CONCLUSIONS Here, we demonstrate the feasibility of single-molecule imaging in uncovering rare SMC subtypes in the diseased human aorta, a difficult tissue to dissociate. We identified a spatially distinct CARTPT-expressing SMC subtype enriched in male human TAA samples. Our functional studies suggest that human CART promotes osteochondrogenic switch of aortic SMCs, potentially leading to medial calcification of the thoracic aorta.
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Affiliation(s)
- Dogukan Mizrak
- Department of Cardiac Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Yang Zhao
- Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Hao Feng
- Department of Cardiac Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Jane Macaulay
- Department of Cardiac Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Ying Tang
- Department of Cardiac Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Zain Sultan
- Department of Cardiac Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Guizhen Zhao
- Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Yanhong Guo
- Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Jifeng Zhang
- Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Bo Yang
- Department of Cardiac Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
| | - Y. Eugene Chen
- Department of Cardiac Surgery, University of Michigan Medical Center, Ann Arbor, MI, USA
- Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, MI, USA
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15
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Spildrejorde M, Samara A, Sharma A, Leithaug M, Falck M, Modafferi S, Sundaram AY, Acharya G, Nordeng H, Eskeland R, Gervin K, Lyle R. Multi-omics approach reveals dysregulated genes during hESCs neuronal differentiation exposure to paracetamol. iScience 2023; 26:107755. [PMID: 37731623 PMCID: PMC10507163 DOI: 10.1016/j.isci.2023.107755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/30/2023] [Accepted: 08/24/2023] [Indexed: 09/22/2023] Open
Abstract
Prenatal paracetamol exposure has been associated with neurodevelopmental outcomes in childhood. Pharmacoepigenetic studies show differences in cord blood DNA methylation between unexposed and paracetamol-exposed neonates, however, causality and impact of long-term prenatal paracetamol exposure on brain development remain unclear. Using a multi-omics approach, we investigated the effects of paracetamol on an in vitro model of early human neurodevelopment. We exposed human embryonic stem cells undergoing neuronal differentiation with paracetamol concentrations corresponding to maternal therapeutic doses. Single-cell RNA-seq and ATAC-seq integration identified paracetamol-induced chromatin opening changes linked to gene expression. Differentially methylated and/or expressed genes were involved in neurotransmission and cell fate determination trajectories. Some genes involved in neuronal injury and development-specific pathways, such as KCNE3, overlapped with differentially methylated genes previously identified in cord blood associated with prenatal paracetamol exposure. Our data suggest that paracetamol may play a causal role in impaired neurodevelopment.
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Affiliation(s)
- Mari Spildrejorde
- PharmaTox Strategic Research Initiative, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Athina Samara
- Division of Clinical Paediatrics, Department of Women’s and Children’s Health, Karolinska Institutet, Stockholm, Sweden
- Astrid Lindgren Children′s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Ankush Sharma
- Department of Informatics, University of Oslo, Oslo, Norway
- Department of Molecular Medicine, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - Magnus Leithaug
- PharmaTox Strategic Research Initiative, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Martin Falck
- PharmaTox Strategic Research Initiative, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
- Department of Biosciences, University of Oslo, Oslo, Norway
| | - Stefania Modafferi
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Arvind Y.M. Sundaram
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Ganesh Acharya
- Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Alfred Nobels Allé 8, SE-14152 Stockholm, Sweden
- Center for Fetal Medicine, Karolinska University Hospital, SE-14186 Stockholm, Sweden
| | - Hedvig Nordeng
- PharmaTox Strategic Research Initiative, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
- Pharmacoepidemiology and Drug Safety Research Group, Department of Pharmacy, University of Oslo, Oslo, Norway
| | - Ragnhild Eskeland
- PharmaTox Strategic Research Initiative, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
- Department of Molecular Medicine, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kristina Gervin
- PharmaTox Strategic Research Initiative, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
- Pharmacoepidemiology and Drug Safety Research Group, Department of Pharmacy, University of Oslo, Oslo, Norway
- Division of Clinical Neuroscience, Department of Research and Innovation, Oslo University Hospital, Oslo, Norway
| | - Robert Lyle
- PharmaTox Strategic Research Initiative, Faculty of Mathematics and Natural Sciences, University of Oslo, Oslo, Norway
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
- Centre for Fertility and Health, Norwegian Institute of Public Health, Oslo, Norway
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16
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Eleftheriadis PE, Pothakos K, Sharples SA, Apostolou PE, Mina M, Tetringa E, Tsape E, Miles GB, Zagoraiou L. Peptidergic modulation of motor neuron output via CART signaling at C bouton synapses. Proc Natl Acad Sci U S A 2023; 120:e2300348120. [PMID: 37733738 PMCID: PMC10523464 DOI: 10.1073/pnas.2300348120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 07/17/2023] [Indexed: 09/23/2023] Open
Abstract
The intensity of muscle contraction, and therefore movement vigor, needs to be adaptable to enable complex motor behaviors. This can be achieved by adjusting the properties of motor neurons, which form the final common pathway for all motor output from the central nervous system. Here, we identify roles for a neuropeptide, cocaine- and amphetamine-regulated transcript (CART), in the control of movement vigor. We reveal distinct but parallel mechanisms by which CART and acetylcholine, both released at C bouton synapses on motor neurons, selectively amplify the output of subtypes of motor neurons that are recruited during intense movement. We find that mice with broad genetic deletion of CART or selective elimination of acetylcholine from C boutons exhibit deficits in behavioral tasks that require higher levels of motor output. Overall, these data uncover spinal modulatory mechanisms that control movement vigor to support movements that require a high degree of muscle force.
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Affiliation(s)
| | - Konstantinos Pothakos
- Center of Basic Research, Biomedical Research Foundation Academy of Athens, Athens11527, Greece
| | - Simon A. Sharples
- School of Psychology and Neuroscience, University of St. Andrews, St. AndrewsKY16 9JP, United Kingdom
| | - Panagiota E. Apostolou
- Center of Basic Research, Biomedical Research Foundation Academy of Athens, Athens11527, Greece
| | - Maria Mina
- Center of Basic Research, Biomedical Research Foundation Academy of Athens, Athens11527, Greece
| | - Efstathia Tetringa
- Center of Basic Research, Biomedical Research Foundation Academy of Athens, Athens11527, Greece
| | - Eirini Tsape
- Center of Basic Research, Biomedical Research Foundation Academy of Athens, Athens11527, Greece
| | - Gareth B. Miles
- School of Psychology and Neuroscience, University of St. Andrews, St. AndrewsKY16 9JP, United Kingdom
| | - Laskaro Zagoraiou
- Center of Basic Research, Biomedical Research Foundation Academy of Athens, Athens11527, Greece
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17
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Qi Z, Zhong W, Jiao B, Chen K, Yang X, Wang L, Zeng W, Huang J, Xie J. Activation of G-protein-coupled receptor 183 initiates inflammatory pain via macrophage CCL22 secretion. Eur J Pharmacol 2023; 954:175872. [PMID: 37353188 DOI: 10.1016/j.ejphar.2023.175872] [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: 02/23/2023] [Revised: 06/12/2023] [Accepted: 06/20/2023] [Indexed: 06/25/2023]
Abstract
Chronic pain is a major public health problem with limited effective therapeutic options. G-protein-coupled receptors play a significant role in pain modulation; however, whether and how G-protein-coupled receptor 183 participates in pain regulation remain unclear. In the present study, we found that G-protein-coupled receptor 183 expression was specifically upregulated in the hind paws of mice in various inflammatory pain models. Activation of G-protein-coupled receptor 183 induced acute pain, whereas inhibition or silencing of this receptor alleviated mechanical allodynia and thermal hyperalgesia in complete Freund's adjuvant (CFA) model. Mechanistically, activating G-protein-coupled receptor 183 triggers pain responses via the upregulation of C-C motif chemokine 22(CCL22) in macrophages while blocking the CCL22 receptor C-C motif chemokine receptor 4 (CCR4) attenuates pain hypersensitivity. Taken together, our findings indicate that the G-protein-coupled receptor 183-CCL22 axis has a critical role in the development and maintenance of inflammatory pain.
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Affiliation(s)
- Zhenhua Qi
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Weiqiang Zhong
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Boyu Jiao
- Department of Acupuncture, The First Affiliated Hospital, SunYat-sen University, Guangzhou, Guangdong, 510080, China
| | - Kang Chen
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Xiaohua Yang
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Linjie Wang
- Department of Human Anatomy and Physiology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Weian Zeng
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Junting Huang
- Department of Human Anatomy and Physiology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China.
| | - Jingdun Xie
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
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18
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Priest MF, Freda SN, Rieth IJ, Badong D, Dumrongprechachan V, Kozorovitskiy Y. Peptidergic and functional delineation of the Edinger-Westphal nucleus. Cell Rep 2023; 42:112992. [PMID: 37594894 PMCID: PMC10512657 DOI: 10.1016/j.celrep.2023.112992] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 06/15/2023] [Accepted: 07/31/2023] [Indexed: 08/20/2023] Open
Abstract
Many neuronal populations that release fast-acting excitatory and inhibitory neurotransmitters in the brain also contain slower-acting neuropeptides. These facultative peptidergic cell types are common, but it remains uncertain whether neurons that solely release peptides exist. Our fluorescence in situ hybridization, genetically targeted electron microscopy, and electrophysiological characterization suggest that most neurons of the non-cholinergic, centrally projecting Edinger-Westphal nucleus in mice are obligately peptidergic. We further show, using anterograde projection mapping, monosynaptic retrograde tracing, angled-tip fiber photometry, and chemogenetic modulation and genetically targeted ablation in conjunction with canonical assays for anxiety, that this peptidergic population activates in response to loss of motor control and promotes anxiety responses. Together, these findings elucidate an integrative, ethologically relevant role for the Edinger-Westphal nucleus and functionally align the nucleus with the periaqueductal gray, where it resides. This work advances our understanding of peptidergic modulation of anxiety and provides a framework for future investigations of peptidergic systems.
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Affiliation(s)
- Michael F Priest
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA
| | - Sara N Freda
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA
| | - Isabelle J Rieth
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA
| | - Deanna Badong
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA
| | - Vasin Dumrongprechachan
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA
| | - Yevgenia Kozorovitskiy
- Department of Neurobiology, Northwestern University, Evanston, IL 60208, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA.
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19
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Owe-Larsson M, Pawłasek J, Piecha T, Sztokfisz-Ignasiak A, Pater M, Janiuk IR. The Role of Cocaine- and Amphetamine-Regulated Transcript (CART) in Cancer: A Systematic Review. Int J Mol Sci 2023; 24:9986. [PMID: 37373130 DOI: 10.3390/ijms24129986] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/04/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
The functions of cocaine- and amphetamine-regulated transcript (CART) neuropeptide encoded by the CARTPT gene vary from modifying behavior and pain sensitivity to being an antioxidant. Putative CART peptide receptor GPR160 was implicated recently in the pathogenesis of cancer. However, the exact role of CART protein in the development of neoplasms remains unclear. This systematic review includes articles retrieved from the Scopus, PubMed, Web of Science and Medline Complete databases. Nineteen publications that met the inclusion criteria and describe the association of CART and cancer were analyzed. CART is expressed in various types of cancer, e.g., in breast cancer and neuroendocrine tumors (NETs). The role of CART as a potential biomarker in breast cancer, stomach adenocarcinoma, glioma and some types of NETs was suggested. In various cancer cell lines, CARTPT acts an oncogene, enhancing cellular survival by the activation of the ERK pathway, the stimulation of other pro-survival molecules, the inhibition of apoptosis or the increase in cyclin D1 levels. In breast cancer, CART was reported to protect tumor cells from tamoxifen-mediated death. Taken together, these data support the role of CART activity in the pathogenesis of cancer, thus opening new diagnostic and therapeutic approaches in neoplastic disorders.
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Affiliation(s)
- Maja Owe-Larsson
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Chałubińskiego 5, 02-004 Warsaw, Poland
| | - Jan Pawłasek
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Chałubińskiego 5, 02-004 Warsaw, Poland
| | - Tomasz Piecha
- Department of General, Oncological and Functional Urology, Medical University of Warsaw, Lindleya 4, 02-005 Warsaw, Poland
| | - Alicja Sztokfisz-Ignasiak
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Chałubińskiego 5, 02-004 Warsaw, Poland
| | - Mikołaj Pater
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Chałubińskiego 5, 02-004 Warsaw, Poland
| | - Izabela R Janiuk
- Department of Histology and Embryology, Center of Biostructure Research, Medical University of Warsaw, Chałubińskiego 5, 02-004 Warsaw, Poland
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20
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Sanchez-Navarro MJ, Borner T, Reiner BC, Crist RC, Samson WK, Yosten GLC, Stein L, Hayes MR. GPR-160 Receptor Signaling in the Dorsal Vagal Complex of Male Rats Modulates Meal Microstructure and CART-Mediated Hypophagia. Nutrients 2023; 15:nu15102268. [PMID: 37242151 DOI: 10.3390/nu15102268] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 04/28/2023] [Accepted: 05/03/2023] [Indexed: 05/28/2023] Open
Abstract
The g-protein coupled receptor GPR-160, recently identified as a putative receptor for the cocaine and amphetamine-regulated transcript (CART) peptide, shows abundant expression in the energy-balance control nuclei, including the dorsal vagal complex (DVC). However, its physiological role in the control of food intake has yet to be fully explored. Here, we performed a virally mediated, targeted knockdown (KD) of Gpr160 in the DVC of male rats to evaluate its physiological role in control of feeding. Our results indicate that DVC Gpr160 KD affects meal microstructure. Specifically, DVC Gpr160 KD animals consumed more frequent, but shorter meals during the dark phase and showed decreased caloric intake and duration of meals during the light phase. Cumulatively, however, these bidirectional effects on feeding resulted in no difference in body weight gain. We next tested the role of DVC GPR-160 in mediating the anorexigenic effects of exogenous CART. Our results show that DVC Gpr160 KD partially attenuates CART's anorexigenic effects. To further characterize Gpr160+ cells in the DVC, we utilized single-nucleus RNA sequencing data to uncover abundant GPR-160 expression in DVC microglia and only minimal expression in neurons. Altogether, our results suggest that DVC CART signaling may be mediated by Gpr160+ microglia, which in turn may be modulating DVC neuronal activity to control food intake.
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Affiliation(s)
- Marcos J Sanchez-Navarro
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Tito Borner
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Benjamin C Reiner
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Richard C Crist
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Willis K Samson
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, 1402 S. Grand Boulevard, Saint Louis, MO 63104, USA
| | - Gina L C Yosten
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, 1402 S. Grand Boulevard, Saint Louis, MO 63104, USA
| | - Lauren Stein
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Matthew R Hayes
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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21
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Freitas-Lima LC, Pačesová A, Staňurová J, Šácha P, Marek A, Hubálek M, Kuneš J, Železná B, Maletínská L. GPR160 is not a receptor of anorexigenic cocaine- and amphetamine-regulated transcript peptide. Eur J Pharmacol 2023; 949:175713. [PMID: 37054941 DOI: 10.1016/j.ejphar.2023.175713] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 04/04/2023] [Accepted: 04/11/2023] [Indexed: 04/15/2023]
Abstract
COCAINE: and amphetamine-regulated transcript peptide (CARTp) is an anorexigenic neuropeptide whose receptor is undisclosed. Previously, we reported the specific binding of CART(61-102) to pheochromocytoma PC12 cells, where CART(61-102) affinity and the number of binding sites per cell corresponded to ligand-receptor binding. Recently, Yosten et al. designated orphan GPR160 as the CARTp receptor, because the GPR160 antibody abolished neuropathic pain and anorexigenic effects induced by CART(55-102) and exogenous CART(55-102) coimmunoprecipitated with GPR160 in KATOIII cells. As no direct evidence that CARTp is a ligand for GPR160 has been described, we decided to verify this hypothesis by testing CARTp affinity to the GPR160 receptor. We investigated the GPR160 expression in PC12 cells since it is cell line known to specifically bind CARTp. Moreover, we examined the specific CARTp binding in THP1 cells, with high endogenous GPR160 expression and GPR160-transfected cell lines U2OS and U-251 MG. In PC12 cells, the GPR160 antibody did not compete for specific binding with 125I-CART(61-102) or with 125I-CART(55-102), and GPR160 mRNA expression and GPR160 immunoreactivity were not detected. Moreover, THP1 cells did not show any 125I-CART(61-102) or 125I-CART(55-102) specific binding despite GPR160 detection by fluorescent immunocytochemistry (ICC). Finally, no 125I-CART(61-102) or 125I-CART(55-102) specific binding in the GPR160-transfected cell lines U2OS and U-251 MG, selected due to their negligible endogenous expression of GPR160, was detected, despite the detection of GPR160 by fluorescent ICC. Our binding studies clearly demonstrated that GPR160 cannot be a receptor for CARTp. Further studies are needed to identify true CARTp receptors.
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Affiliation(s)
- Leandro Ceotto Freitas-Lima
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague, Czech Republic
| | - Andrea Pačesová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague, Czech Republic
| | - Jana Staňurová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague, Czech Republic
| | - Pavel Šácha
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague, Czech Republic
| | - Aleš Marek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague, Czech Republic
| | - Martin Hubálek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague, Czech Republic
| | - Jaroslav Kuneš
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague, Czech Republic; Institute of Physiology of the Czech Academy of Sciences, Vídeňská 1083, 142 00, Prague, Czech Republic
| | - Blanka Železná
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague, Czech Republic
| | - Lenka Maletínská
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo nam. 2, 16610, Prague, Czech Republic.
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22
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Langlieb J, Sachdev NS, Balderrama KS, Nadaf NM, Raj M, Murray E, Webber JT, Vanderburg C, Gazestani V, Tward D, Mezias C, Li X, Cable DM, Norton T, Mitra P, Chen F, Macosko EZ. The cell type composition of the adult mouse brain revealed by single cell and spatial genomics. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.06.531307. [PMID: 36945580 PMCID: PMC10028805 DOI: 10.1101/2023.03.06.531307] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
Abstract
The function of the mammalian brain relies upon the specification and spatial positioning of diversely specialized cell types. Yet, the molecular identities of the cell types, and their positions within individual anatomical structures, remain incompletely known. To construct a comprehensive atlas of cell types in each brain structure, we paired high-throughput single-nucleus RNA-seq with Slide-seq-a recently developed spatial transcriptomics method with near-cellular resolution-across the entire mouse brain. Integration of these datasets revealed the cell type composition of each neuroanatomical structure. Cell type diversity was found to be remarkably high in the midbrain, hindbrain, and hypothalamus, with most clusters requiring a combination of at least three discrete gene expression markers to uniquely define them. Using these data, we developed a framework for genetically accessing each cell type, comprehensively characterized neuropeptide and neurotransmitter signaling, elucidated region-specific specializations in activity-regulated gene expression, and ascertained the heritability enrichment of neurological and psychiatric phenotypes. These data, available as an online resource (BrainCellData.org) should find diverse applications across neuroscience, including the construction of new genetic tools, and the prioritization of specific cell types and circuits in the study of brain diseases.
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Affiliation(s)
| | | | | | | | - Mukund Raj
- Broad Institute of Harvard and MIT, Cambridge, MA USA
| | - Evan Murray
- Broad Institute of Harvard and MIT, Cambridge, MA USA
| | | | | | | | - Daniel Tward
- Departments of Computational Medicine and Neurology, University of California Los Angeles, Los Angeles, CA USA
| | - Chris Mezias
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY USA
| | - Xu Li
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY USA
| | - Dylan M. Cable
- Broad Institute of Harvard and MIT, Cambridge, MA USA
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA USA
| | | | - Partha Mitra
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY USA
| | - Fei Chen
- Broad Institute of Harvard and MIT, Cambridge, MA USA
- Harvard Stem Cell and Regenerative Biology, Cambridge, MA USA
| | - Evan Z. Macosko
- Broad Institute of Harvard and MIT, Cambridge, MA USA
- Department of Psychiatry, Massachusetts General Hospital, Boston, MA USA
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23
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Franchini L, Orlandi C. Probing the orphan receptors: Tools and directions. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2023; 195:47-76. [PMID: 36707155 DOI: 10.1016/bs.pmbts.2022.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The endogenous ligands activating a large fraction of the G Protein Coupled Receptor (GPCR) family members have yet to be identified. These receptors are commonly labeled as orphans (oGPCRs), and because of the absence of available pharmacological tools they are currently understudied. Nonetheless, genome wide association studies, together with research using animal models identified many physiological functions regulated by oGPCRs. Similarly, mutations in some oGPCRs have been associated with rare genetic disorders or with an increased risk of developing pathologies. The once underestimated pharmacological potential of targeting oGPCRs is increasingly being exploited by the development of novel tools to understand their biology and by drug discovery endeavors aimed at identifying new modulators of their activity. Here, we summarize recent advancements in the field of oGPCRs and future directions.
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Affiliation(s)
- Luca Franchini
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY, United States
| | - Cesare Orlandi
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY, United States.
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24
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Funayama Y, Li H, Ishimori E, Kawatake-Kuno A, Inaba H, Yamagata H, Seki T, Nakagawa S, Watanabe Y, Murai T, Oishi N, Uchida S. Antidepressant Response and Stress Resilience Are Promoted by CART Peptides in GABAergic Neurons of the Anterior Cingulate Cortex. BIOLOGICAL PSYCHIATRY GLOBAL OPEN SCIENCE 2023; 3:87-98. [PMID: 36712563 PMCID: PMC9874166 DOI: 10.1016/j.bpsgos.2021.12.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/09/2021] [Accepted: 12/27/2021] [Indexed: 02/01/2023] Open
Abstract
Background A key challenge in the understanding and treatment of depression is identifying cell types and molecular mechanisms that mediate behavioral responses to antidepressant drugs. Because treatment responses in clinical depression are heterogeneous, it is crucial to examine treatment responders and nonresponders in preclinical studies. Methods We used the large variance in behavioral responses to long-term treatment with multiple classes of antidepressant drugs in different inbred mouse strains and classified the mice into responders and nonresponders based on their response in the forced swim test. Medial prefrontal cortex tissues were subjected to RNA sequencing to identify molecules that are consistently associated across antidepressant responders. We developed and used virus-mediated gene transfer to induce the gene of interest in specific cell types and performed forced swim, sucrose preference, social interaction, and open field tests to investigate antidepressant-like and anxiety-like behaviors. Results Cartpt expression was consistently upregulated in responders to four types of antidepressants but not in nonresponders in different mice strains. Responder mice given a single dose of ketamine, a fast-acting non-monoamine-based antidepressant, exhibited high CART peptide expression. CART peptide overexpression in the GABAergic (gamma-aminobutyric acidergic) neurons of the anterior cingulate cortex led to antidepressant-like behavior and drove chronic stress resiliency independently of mouse genetic background. Conclusions These data demonstrate that activation of CART peptide signaling in GABAergic neurons of the anterior cingulate cortex is a common molecular mechanism across antidepressant responders and that this pathway also drives stress resilience.
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Affiliation(s)
- Yuki Funayama
- SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Psychiatry, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Haiyan Li
- SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Psychiatry, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Erina Ishimori
- SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ayako Kawatake-Kuno
- SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hiromichi Inaba
- SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hirotaka Yamagata
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Tomoe Seki
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Shin Nakagawa
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Yoshifumi Watanabe
- Division of Neuropsychiatry, Department of Neuroscience, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Toshiya Murai
- SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Psychiatry, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Naoya Oishi
- SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Shusaku Uchida
- SK Project, Medical Innovation Center, Kyoto University Graduate School of Medicine, Kyoto, Japan
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25
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Upregulation of LncRNA71132 in the spinal cord regulates hypersensitivity in a rat model of bone cancer pain. Pain 2023; 164:180-196. [PMID: 35543644 DOI: 10.1097/j.pain.0000000000002678] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 04/13/2022] [Indexed: 01/09/2023]
Abstract
ABSTRACT Bone cancer pain (BCP) is a pervasive clinical symptom which impairs the quality life. Long noncoding RNAs (lncRNAs) are enriched in the central nervous system and play indispensable roles in numerous biological processes, while its regulatory function in nociceptive information processing remains elusive. Here, we reported that functional modulatory role of ENSRNOT00000071132 (lncRNA71132) in the BCP process and sponging with miR-143 and its downstream GPR85-dependent signaling cascade. Spinal lncRNA71132 was remarkably increased in the rat model of bone cancer pain. The knockdown of spinal lncRNA71132 reverted BCP behaviors and spinal c-Fos neuronal sensitization. Overexpression of spinal lncRNA71132 in naive rat generated pain behaviors, which were accompanied by increased spinal c-Fos neuronal sensitization. Furthermore, it was found that lncRNA71132 participates in the modulation of BCP by inversely regulating the processing of miR-143-5p. In addition, an increase in expression of spinal lncRNA71132 resulted in the decrease in expression of miR-143 under the BCP state. Finally, it was found that miR-143-5p regulates pain behaviors by targeting GPR85. Overexpression of miR-143-5p in the spinal cord reverted the nociceptive behaviors triggered by BCP, accompanied by a decrease in expression of spinal GPR85 protein, but no influence on expression of gpr85 mRNA. The findings of this study indicate that lncRNA71132 works as a miRNA sponge in miR-143-5p-mediated posttranscriptional modulation of GPR85 expression in BCP. Therefore, epigenetic interventions against lncRNA71132 may potentially work as novel treatment avenues in treating nociceptive hypersensitivity triggered by bone cancer.
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26
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Cho BR, Kim WY, Jang JK, Lee JW, Kim JH. Glycogen Synthase Kinase 3β Is a Key Regulator in the Inhibitory Effects of Accumbal Cocaine- and Amphetamine-Regulated Transcript Peptide 55-102 on Amphetamine-Induced Locomotor Activity. Int J Mol Sci 2022; 23:ijms232415633. [PMID: 36555273 PMCID: PMC9779470 DOI: 10.3390/ijms232415633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Microinjection of cocaine- and amphetamine-regulated transcript (CART) peptide 55-102 into the nucleus accumbens (NAcc) core significantly attenuates psychostimulant-induced locomotor activity. However, the molecular mechanism remains poorly understood. We examined the phosphorylation levels of Akt, glycogen synthase kinase 3β (GSK3β), and glutamate receptor 1 (GluA1) in NAcc core tissues obtained 60 min after microinjection of CART peptide 55-102 into this site, followed by systemic injection of amphetamine (AMPH). Phosphorylation levels of Akt at Thr308 and GSK3β at Ser9 were decreased, while those of GluA1 at Ser845 were increased, by AMPH treatment. These effects returned to basal levels following treatment with CART peptide 55-102. Furthermore, the negative regulatory effects of the CART peptide on AMPH-induced changes in phosphorylation levels and locomotor activity were all abolished by pretreatment with the S9 peptide, an artificially synthesized indirect GSK3β activator. These results suggest that the CART peptide 55-102 in the NAcc core plays a negative regulatory role in AMPH-induced locomotor activity by normalizing the changes in phosphorylation levels of Akt-GSK3β, and subsequently GluA1 modified by AMPH at this site. The present findings are the first to reveal GSK3β as a key regulator of the inhibitory role of the CART peptide in psychomotor stimulant-induced locomotor activity.
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Affiliation(s)
- Bo Ram Cho
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06519, USA
| | - Wha Young Kim
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Ju Kyong Jang
- Department of Pharmacology, Bio-Pharm Solutions Co., Ltd., Suwon-si 16229, Gyeonggi-do, Republic of Korea
| | - Jung Won Lee
- Division of In Vitro Diagnostic Devices, National Institute of Food and Drug Safety Evaluation, Cheongju-si 28159, Chungcheongbuk-do, Republic of Korea
| | - Jeong-Hoon Kim
- Department of Physiology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- Department of Medical Sciences, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- Correspondence:
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27
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Braden K, Campolo M, Li Y, Chen Z, Doyle TM, Giancotti LA, Esposito E, Zhang J, Cuzzocrea S, Arnatt CK, Salvemini D. Activation of GPR183 by 7 α,25-Dihydroxycholesterol Induces Behavioral Hypersensitivity through Mitogen-Activated Protein Kinase and Nuclear Factor- κB. J Pharmacol Exp Ther 2022; 383:172-181. [PMID: 36116795 PMCID: PMC9553113 DOI: 10.1124/jpet.122.001283] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 08/17/2022] [Indexed: 01/07/2023] Open
Abstract
Emerging evidence implicates the G-protein coupled receptor (GPCR) GPR183 in the development of neuropathic pain. Further investigation of the signaling pathways downstream of GPR183 is needed to support the development of GPR183 antagonists as analgesics. In rodents, intrathecal injection of its ligand, 7α,25-dihydroxycholesterol (7α,25-OHC), causes time-dependent development of mechano-and cold- allodynia (behavioral hypersensitivity). These effects are blocked by the selective small molecule GPR183 antagonist, SAE-14. However, the molecular mechanisms engaged downstream of GPR183 in the spinal cord are not known. Here, we show that 7α,25-OHC-induced behavioral hypersensitivity is Gα i dependent, but not β-arrestin 2-dependent. Non-biased transcriptomic analyses of dorsal-horn spinal cord (DH-SC) tissues harvested at the time of peak hypersensitivity implicate potential contributions of mitogen-activated protein kinase (MAPK) and nuclear factor κB (NF-κB). In support, we found that the development of 7α,25-OHC/GPR183-induced mechano-allodynia was associated with significant activation of MAPKs (extracellular signal-regulated kinase [ERK], p38) and redox-sensitive transcription factors (NF-κB) and increased formation of inflammatory and neuroexcitatory cytokines. SAE-14 blocked these effects and behavioral hypersensitivity. Our findings provide novel mechanistic insight into how GPR183 signaling in the spinal cord produces hypersensitivity through MAPK and NF-κB activation. SIGNIFICANCE STATEMENT: Using a multi-disciplinary approach, we have characterized the molecular mechanisms underpinning 7α,25-OHC/GPR183-induced hypersensitivity in mice. Intrathecal injections of the GPR183 agonist 7α,25-OHC induce behavioral hypersensitivity, and these effects are blocked by the selective GPR183 antagonist SAE-14. We found that 7α,25-OHC-induced allodynia is dependent on MAPK and NF-κB signaling pathways and results in an increase in pro-inflammatory cytokine expression. This study provides a first insight into how GPR183 signaling in the spinal cord is pronociceptive.
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Affiliation(s)
- Kathryn Braden
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Michela Campolo
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Ying Li
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Zhoumou Chen
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Timothy M Doyle
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Luigino Antonio Giancotti
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Emanuela Esposito
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Jinsong Zhang
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Salvatore Cuzzocrea
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Christopher Kent Arnatt
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
| | - Daniela Salvemini
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A., D.S.); Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University, Saint Louis, Missouri (K.B., Y.L., Z.C., T.M.D., L.A.G., J.Z., C.K.A.,D.S.); Department of Clinical and Experimental Medicine and Pharmacology, University of Messina, Messina, Italy (M.C., E.E., S.C.); and Department of Chemistry, Saint Louis University, Saint Louis, Missouri (C.K.A.)
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28
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Unravelling biological roles and mechanisms of GABA BR on addiction and depression through mood and memory disorders. Biomed Pharmacother 2022; 155:113700. [PMID: 36152411 DOI: 10.1016/j.biopha.2022.113700] [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: 08/12/2022] [Revised: 09/08/2022] [Accepted: 09/13/2022] [Indexed: 11/23/2022] Open
Abstract
The metabotropic γ-aminobutyric acid type B receptor (GABABR) remains a hotspot in the recent research area. Being an idiosyncratic G-protein coupled receptor family member, the GABABR manifests adaptively tailored functionality under multifarious modulations by a constellation of agents, pointing to cross-talk between receptors and effectors that converge on the domains of mood and memory. This review systematically summarizes the latest achievements in signal transduction mechanisms of the GABABR-effector-regulator complex and probes how the up-and down-regulation of membrane-delimited GABABRs are associated with manifold intrinsic and extrinsic agents in synaptic strength and plasticity. Neuropsychiatric conditions depression and addiction share the similar pathophysiology of synapse inadaptability underlying negative mood-related processes, memory formations, and impairments. In the attempt to emphasize all convergent discoveries, we hope the insights gained on the GABABR system mechanisms of action are conducive to designing more therapeutic candidates so as to refine the prognosis rate of diseases and minimize side effects.
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Li S, Chen J, Chen X, Yu J, Guo Y, Li M, Pu X. Therapeutic and prognostic potential of GPCRs in prostate cancer from multi-omics landscape. Front Pharmacol 2022; 13:997664. [PMID: 36110544 PMCID: PMC9468875 DOI: 10.3389/fphar.2022.997664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/09/2022] [Indexed: 11/23/2022] Open
Abstract
Prostate cancer (PRAD) is a common and fatal malignancy. It is difficult to manage clinically due to drug resistance and poor prognosis, thus creating an urgent need for novel therapeutic targets and prognostic biomarkers. Although G protein-coupled receptors (GPCRs) have been most attractive for drug development, there have been lack of an exhaustive assessment on GPCRs in PRAD like their molecular features, prognostic and therapeutic values. To close this gap, we herein systematically investigate multi-omics profiling for GPCRs in the primary PRAD by analyzing somatic mutations, somatic copy-number alterations (SCNAs), DNA methylation and mRNA expression. GPCRs exhibit low expression levels and mutation frequencies while SCNAs are more prevalent. 46 and 255 disease-related GPCRs are identified by the mRNA expression and DNA methylation analysis, respectively, complementing information lack in the genome analysis. In addition, the genomic alterations do not exhibit an observable correlation with the GPCR expression, reflecting the complex regulatory processes from DNA to RNA. Conversely, a tight association is observed between the DNA methylation and mRNA expression. The virtual screening and molecular dynamics simulation further identify four potential drugs in repositioning to PRAD. The combination of 3 clinical characteristics and 26 GPCR molecular features revealed by the transcriptome and genome exhibit good performance in predicting progression-free survival in patients with the primary PRAD, providing candidates as new biomarkers. These observations from the multi-omics analysis on GPCRs provide new insights into the underlying mechanism of primary PRAD and potential of GPCRs in developing therapeutic strategies on PRAD.
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Affiliation(s)
- Shiqi Li
- College of Chemistry, Sichuan University, Chengdu, China
| | - Jianfang Chen
- College of Chemistry, Sichuan University, Chengdu, China
| | - Xin Chen
- College of Chemistry, Sichuan University, Chengdu, China
| | - Jin Yu
- Department of Physics and Astronomy, University of California, Irvine, Irvine, CA, United States
| | - Yanzhi Guo
- College of Chemistry, Sichuan University, Chengdu, China
| | - Menglong Li
- College of Chemistry, Sichuan University, Chengdu, China
- *Correspondence: Xuemei Pu, ; Menglong Li,
| | - Xuemei Pu
- College of Chemistry, Sichuan University, Chengdu, China
- *Correspondence: Xuemei Pu, ; Menglong Li,
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30
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Eiden LE, Hernández VS, Jiang SZ, Zhang L. Neuropeptides and small-molecule amine transmitters: cooperative signaling in the nervous system. Cell Mol Life Sci 2022; 79:492. [PMID: 35997826 PMCID: PMC11072502 DOI: 10.1007/s00018-022-04451-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 06/15/2022] [Accepted: 06/23/2022] [Indexed: 12/17/2022]
Abstract
Neuropeptides are expressed in cell-specific patterns throughout mammalian brain. Neuropeptide gene expression has been useful for clustering neurons by phenotype, based on single-cell transcriptomics, and for defining specific functional circuits throughout the brain. How neuropeptides function as first messengers in inter-neuronal communication, in cooperation with classical small-molecule amine transmitters (SMATs) is a current topic of systems neurobiology. Questions include how neuropeptides and SMATs cooperate in neurotransmission at the molecular, cellular and circuit levels; whether neuropeptides and SMATs always co-exist in neurons; where neuropeptides and SMATs are stored in the neuron, released from the neuron and acting, and at which receptors, after release; and how neuropeptides affect 'classical' transmitter function, both directly upon co-release, and indirectly, via long-term regulation of gene transcription and neuronal plasticity. Here, we review an extensive body of data about the distribution of neuropeptides and their receptors, their actions after neuronal release, and their function based on pharmacological and genetic loss- and gain-of-function experiments, that addresses these questions, fundamental to understanding brain function, and development of neuropeptide-based, and potentially combinatorial peptide/SMAT-based, neurotherapeutics.
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Affiliation(s)
- Lee E Eiden
- Section On Molecular Neuroscience, National Institute of Mental Health, Intramural Research Program, National Institutes of Health, 49 Convent Drive, Room 5A38, Bethesda, MD, 20892, USA.
| | - Vito S Hernández
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Sunny Z Jiang
- Section On Molecular Neuroscience, National Institute of Mental Health, Intramural Research Program, National Institutes of Health, 49 Convent Drive, Room 5A38, Bethesda, MD, 20892, USA
| | - Limei Zhang
- Department of Physiology, School of Medicine, National Autonomous University of Mexico, Mexico City, Mexico.
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31
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Abbas A, Jun P, Yuan JY, Sun L, Jiang J, Yuan S. Downregulation of GPR160 inhibits the progression of glioma through suppressing epithelial to mesenchymal transition (EMT) biomarkers. Basic Clin Pharmacol Toxicol 2022; 131:241-250. [PMID: 35771163 DOI: 10.1111/bcpt.13769] [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: 03/28/2022] [Revised: 05/27/2022] [Accepted: 06/24/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Glioblastoma multiforme (GBM) is one of the most fatal types of malignant tumors, the cause of which is mostly unknown. Orphan GPCRs (GPRs) have been previously implicated in tumor growth and metastasis. Therefore, these GPRs could prove to be alternative and promising therapeutic targets for cancer treatment. OBJECTIVE The role of GPR160 in GBM has not yet been assessed. This study aims to explore the association of GPR160 with glioma progression and investigate its role in epithelial-to-mesenchymal transition (EMT) and metastasis. METHODS Changes in protein expression were assessed using western blot analysis and immunofluorescent staining assays, while mRNA expression changes were evaluated using qRT-PCR. To detect the changes in progression and metastasis, MTT, EdU proliferation, wound healing, transwell migration, and flow cytometry assays were carried out in vitro. An epithelial to mesenchymal phenotypic analysis was performed to detect EMT. RESULTS We demonstrated that knockdown of GPR160 inhibited proliferation, colony formation, and cell viability and promoted apoptosis. Pro-apoptotic biomarkers were upregulated, while anti-apoptotic biomarkers were downregulated. Cell lines with GPR160 knockdown (GPR160 KD) showed a slowed migration rate and decreased invasion ability. EMT mesenchymal biomarkers were downregulated in GPR160 KD cell lines, while epithelial biomarkers were upregulated. CONCLUSION This study provides evidence that GPR160 is a potential therapeutic target in GBM for the first time. These findings can be used to discover in detail the molecular mechanism and pathways through which GPR160 promotes glioma progression.
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Affiliation(s)
- Azar Abbas
- Jiangsu key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, P. R China
| | - Peng Jun
- Jiangsu key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, P. R China
| | - Jiang Yuan Yuan
- Jiangsu key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, P. R China
| | - Li Sun
- Jiangsu key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, P. R China
| | - Jinwei Jiang
- Jiangsu key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, P. R China
| | - Shengtao Yuan
- Jiangsu key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu, P. R China
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32
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Zhang T, Lin C, Wu S, Jin S, Li X, Peng Y, Wang X. ACT001 Inhibits TLR4 Signaling by Targeting Co-Receptor MD2 and Attenuates Neuropathic Pain. Front Immunol 2022; 13:873054. [PMID: 35757727 PMCID: PMC9218074 DOI: 10.3389/fimmu.2022.873054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 05/03/2022] [Indexed: 01/05/2023] Open
Abstract
Neuropathic pain is a common and challenging neurological disease, which renders an unmet need for safe and effective new therapies. Toll-like receptor 4 (TLR4) expressed on immune cells in the central nervous system arises as a novel target for treating neuropathic pain. In this study, ACT001, an orphan drug currently in clinical trials for the treatment of glioblastoma, was identified as a TLR4 antagonist. In vitro quenching titrations of intrinsic protein fluorescence and saturation transfer difference (STD)-NMR showed the direct binding of ACT001 to TLR4 co-receptor MD2. Cellular thermal shift assay (CETSA) showed that ACT001 binding affected the MD2 stability, which implies that MD2 is the endogenous target of ACT001. In silico simulations showed that ACT001 binding decreased the percentage of hydrophobic area in the buried solvent-accessible surface areas (SASA) of MD2 and rendered most regions of MD2 to be more flexible, which is consistent with experimental data that ACT001 binding decreased MD2 stability. In keeping with targeting MD2, ACT001 was found to restrain the formation of TLR4/MD2/MyD88 complex and the activation of TLR4 signaling axes of NF-κB and MAPKs, therefore blocking LPS-induced TLR4 signaling downstream pro-inflammatory factors NO, IL-6, TNF-α, and IL-1β. Furthermore, systemic administration of ACT001 attenuated allodynia induced by peripheral nerve injury and activation of microglia and astrocyte in vivo. Given the well-established role of neuroinflammation in neuropathic pain, these data imply that ACT001 could be a potential drug candidate for the treatment of chronic neuropathic pain.
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Affiliation(s)
- Tianshu Zhang
- Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China.,State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China
| | - Cong Lin
- Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China
| | - Siru Wu
- Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China
| | - Sha Jin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
| | - Xiaodong Li
- Beijing Changping Huayou Hospital, Beijing, China
| | - Yinghua Peng
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Xiaohui Wang
- Laboratory of Chemical Biology, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, China.,State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing, China.,Beijing National Laboratory for Molecular Sciences, Beijing, China
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Wierup N, Abels M, Shcherbina L, Lindqvist A. The role of CART in islet biology. Peptides 2022; 149:170708. [PMID: 34896575 DOI: 10.1016/j.peptides.2021.170708] [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: 10/07/2021] [Revised: 12/03/2021] [Accepted: 12/03/2021] [Indexed: 10/19/2022]
Abstract
Cocaine- and amphetamine-regulated transcript (CART) is mostly known for its appetite regulating effects in the central nervous system. However, CART is also highly expressed in the peripheral nervous system as well as in certain endocrine cells. Our group has dedicated more than 20 years to understand the role of CART in the pancreatic islets and in this review we summarize what is known to date about CART expression and function in the islets. CART is expressed in both islet cells and nerve fibers innervating the islets. Large species differences are at hand and CART expression is highly dynamic and increased during development, as well as in Type 2 Diabetes and certain endocrine tumors. In the human islets CART is expressed in alpha cells and beta cells and the expression is increased in T2D patients. CART increases insulin secretion, reduces glucagon secretion, and protects against beta cell death by reducing apoptosis and increasing proliferation. It is still not fully understood how CART mediates its effects or which receptors that are involved. Nevertheless, CART is endowed with several properties that are beneficial in a T2D perspective. Many of the described effects of CART resemble those of GLP-1, and interestingly CART has been found to potentiate some of the effects of GLP-1, paving the way for CART-based treatments in combination with GLP-1-based drugs.
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Affiliation(s)
- Nils Wierup
- Lund University Diabetes Centre, Malmö, Sweden.
| | - Mia Abels
- Lund University Diabetes Centre, Malmö, Sweden
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Михеев РК, Романцова ТИ, Трошина ЕА, Григорян ОР, Андреева ЕН, Шереметьева ЕВ, Абсатарова ЮС, Мокрышева НГ. [Cocaine-amphetamine regulated transcript (CART) - promising omics breakthrough in the endocrinology]. PROBLEMY ENDOKRINOLOGII 2022; 68:4-8. [PMID: 35488751 PMCID: PMC9112847 DOI: 10.14341/probl12872] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 01/26/2022] [Accepted: 01/25/2022] [Indexed: 12/16/2022]
Abstract
BACKGROUND The cocaine-amphetamine regulated transcript has been discovered long time ago (circa over 25 years ago) but still stays not enough investigated. Just during last five years scientist's society started providing interest to the genomic, proteomic and metabolic essence of the cocaine-amphetamine regulated transcript. AIM The evaluation of historical pathway and perspectives of the cocaine-amphetamine regulated transcript medical investigations. MATERIALS AND METHODS The literature search has been provided via Russian (eLibrary, CyberLeninka.ru) and international (PubMed, Cochrane Library) databases and among articles on Russian and English languages. The main criteria for article selection was free access and 2019-2021 years of publishing. Although the introduction is based on the articles published in 1989. The present article was created according to the federal project «Central and peripheral pathophysiological mechanisms of adipose tissue diseases and their clinical and hormonal manifestations патофизиологические механизмы развития болезней жировой ткани с учетом клинических и гормональных характеристик» (2020-2022)RESULTS AND CONCLUISON: It is necessary to keep on investigating genomic, proteomic and metabolomic markers because they contain important clues for successful resistance against human diseases. The 21st century is the era of transformation from simple clinical medicine to personalized science. For example, researches in the area of cocaine-amphetamine regulated transcript may result in invention of genetic medicine against dangerous metabolic diseases.
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Affiliation(s)
- Р. К. Михеев
- Национальный медицинский исследовательский центр эндокринологии
| | - Т. И. Романцова
- Первый московский государственный медицинский университет им. И.М. Сеченова (Сеченовский университет)
| | - Е. А. Трошина
- Национальный медицинский исследовательский центр эндокринологии
| | - О. Р. Григорян
- Национальный медицинский исследовательский центр эндокринологии
| | - Е. Н. Андреева
- Национальный медицинский исследовательский центр эндокринологии
| | | | | | - Н. Г. Мокрышева
- Национальный медицинский исследовательский центр эндокринологии
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35
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Samson WK, Yosten GLC. A comprehensive review of the neuroscience of ingestion: the physiological control of eating: signals, neurons, and networks. Physiol Rev 2022; 102:319-322. [PMID: 34632806 DOI: 10.1152/physrev.00035.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Willis K Samson
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Gina L C Yosten
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, Missouri
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36
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Tian MM, Li YX, Liu S, Zhu CH, Lan XB, Du J, Ma L, Yang JM, Zheng P, Yu JQ, Liu N. Glycosides for Peripheral Neuropathic Pain: A Potential Medicinal Components. Molecules 2021; 27:255. [PMID: 35011486 PMCID: PMC8746348 DOI: 10.3390/molecules27010255] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/29/2021] [Accepted: 12/24/2021] [Indexed: 12/29/2022] Open
Abstract
Neuropathic pain is a refractory disease that occurs across the world and pharmacotherapy has limited efficacy and/or safety. This disease imposes a significant burden on both the somatic and mental health of patients; indeed, some patients have referred to neuropathic pain as being 'worse than death'. The pharmacological agents that are used to treat neuropathic pain at present can produce mild effects in certain patients, and induce many adverse reactions, such as sedation, dizziness, vomiting, and peripheral oedema. Therefore, there is an urgent need to discover novel drugs that are safer and more effective. Natural compounds from medical plants have become potential sources of analgesics, and evidence has shown that glycosides alleviated neuropathic pain via regulating oxidative stress, transcriptional regulation, ion channels, membrane receptors and so on. In this review, we summarize the epidemiology of neuropathic pain and the existing therapeutic drugs used for disease prevention and treatment. We also demonstrate how glycosides exhibit an antinociceptive effect on neuropathic pain in laboratory research and describe the antinociceptive mechanisms involved to facilitate the discovery of new drugs to improve the quality of life of patients experiencing neuropathic pain.
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Affiliation(s)
- Miao-Miao Tian
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
| | - Yu-Xiang Li
- College of Nursing, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China;
| | - Shan Liu
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
| | - Chun-Hao Zhu
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
| | - Xiao-Bing Lan
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
| | - Juan Du
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
| | - Lin Ma
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
| | - Jia-Mei Yang
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
| | - Ping Zheng
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
| | - Jian-Qiang Yu
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
- Ningxia Special Traditional Medicine Modern Engineering Research Center and Collaborative Innovation Center, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China
| | - Ning Liu
- Department of Pharmacology, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China; (M.-M.T.); (S.L.); (C.-H.Z.); (X.-B.L.); (J.D.); (L.M.); (J.-M.Y.)
- Ningxia Special Traditional Medicine Modern Engineering Research Center and Collaborative Innovation Center, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China
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37
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Job MO, Kuhar MJ. Commentary: GPR160 De-Orphanization Reveals Critical Roles in Neuropathic Pain in Rodents (Finally, a Receptor for CART Peptide). ADVANCES IN DRUG AND ALCOHOL RESEARCH 2021; 1:10012. [PMID: 38410642 PMCID: PMC10896429 DOI: 10.3389/adar.2021.10012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 08/26/2021] [Indexed: 02/28/2024]
Affiliation(s)
- Martin O Job
- Department of Biomedical Sciences, Cooper Medical School of Rowan University, Camden, NJ, United States
| | - Michael J Kuhar
- Yerkes National Primate Research Center, Emory University, Atlanta, GA, United States
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38
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Samson WK, Salvemini D, Yosten GLC. Overcoming Stress, Hunger, and Pain: Cocaine- and Amphetamine-Regulated Transcript Peptide's Promise. Endocrinology 2021; 162:6287092. [PMID: 34043767 PMCID: PMC8210821 DOI: 10.1210/endocr/bqab108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Indexed: 01/17/2023]
Abstract
Cocaine- and amphetamine-regulated transcript encodes an eponymous peptide, CARTp, which exerts diverse pharmacologic actions in the central and peripheral nervous systems, as well as in several endocrine organs, including pancreas. Here we review those diverse actions, the physiological relevance of which had remained unestablished until recently. With the identification of a CARTp receptor, GPR160, the physiologic importance and therapeutic potential of CARTp or analogs are being revealed. Not only is the CARTp-GPR160 interaction essential for the circadian regulation of appetite and thirst but also for the transmission of nerve injury-induced pain. Molecular approaches now are uncovering additional physiologically relevant actions and the development of acute tissue-specific gene compromise approaches may reveal even more physiologically relevant actions of this pluripotent ligand/receptor pair.
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Affiliation(s)
- Willis K Samson
- Department of Pharmacology and Physiology and Henry and Amelia Nasrallah Center for Neuroscience Saint Louis University School of Medicine, St Louis, MO 63104, USA
- Correspondence: Willis K. Samson, PhD DSc, Professor of Pharmacology and Physiology, Saint Louis University School of Medicine, Caroline Building, Room 2-207A, 1402 South Grand Boulevard, St Louis, MO 63104, USA.
| | - Daniela Salvemini
- Department of Pharmacology and Physiology and Henry and Amelia Nasrallah Center for Neuroscience Saint Louis University School of Medicine, St Louis, MO 63104, USA
| | - Gina L C Yosten
- Department of Pharmacology and Physiology and Henry and Amelia Nasrallah Center for Neuroscience Saint Louis University School of Medicine, St Louis, MO 63104, USA
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Doyle TM, Braden K, Harada CM, Mufti F, Schafer RM, Salvemini D. Novel Non-Opioid Based Therapeutics for Chronic Neuropathic Pain. MISSOURI MEDICINE 2021; 118:327-333. [PMID: 34373667 PMCID: PMC8343628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Chronic neuropathic pain is currently a major health issue in U.S. complicated by the lack of non-opioid analgesic alternatives. Our investigations led to the discovery of major signaling pathways involved in the transition of acute to chronic neuropathic pain and the identification of several targets for therapeutic intervention. Our translational approach has facilitated the advancement of novel medicines for chronic neuropathic pain that are in advanced clinical development and clinical trials.
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Affiliation(s)
- Timothy M Doyle
- Department of Pharmacology and Physiology and the Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Kathryn Braden
- Department of Pharmacology and Physiology and the Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Caron M Harada
- Department of Pharmacology and Physiology and the Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Fatma Mufti
- Department of Pharmacology and Physiology and the Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Rachel M Schafer
- Department of Pharmacology and Physiology and the Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Daniela Salvemini
- Department of Pharmacology and Physiology and the Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
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Yosten GLC, Kolar GR, Salvemini D, Samson WK. The Deductive Reasoning Strategy Enables Biomedical Breakthroughs. MISSOURI MEDICINE 2021; 118:352-357. [PMID: 34373671 PMCID: PMC8343643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
G protein-coupled receptors (GPCRs) transmit the signals of a variety of hormones and neurotransmitters and are targets of more than 30% of all FDA-approved drugs. We developed an approach for identifying the endogenous ligands for a family of orphan GPCRs that enables the development of novel therapeutics for the potential treatment of a wide variety of disorders including pain, diabetes, appetitive behaviors, infertility and obesity. With this approach, we have deorphanized five previously orphaned GPCRs.
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Affiliation(s)
- Gina L C Yosten
- Department of Pharmacology and Physiology, Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Grant R Kolar
- Department of Pathology, Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Daniela Salvemini
- Department of Pharmacology and Physiology, Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Willis K Samson
- Department of Pharmacology and Physiology, Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, Missouri
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GPR160 is a potential biomarker associated with prostate cancer. Signal Transduct Target Ther 2021; 6:241. [PMID: 34168114 PMCID: PMC8225807 DOI: 10.1038/s41392-021-00583-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/02/2021] [Accepted: 03/24/2021] [Indexed: 11/08/2022] Open
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Singh A, de Araujo AM, Krieger JP, Vergara M, Ip CK, de Lartigue G. Demystifying functional role of cocaine- and amphetamine-related transcript (CART) peptide in control of energy homeostasis: A twenty-five year expedition. Peptides 2021; 140:170534. [PMID: 33757831 PMCID: PMC8369463 DOI: 10.1016/j.peptides.2021.170534] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 02/28/2021] [Accepted: 03/16/2021] [Indexed: 12/17/2022]
Abstract
Cocaine- and amphetamine-related transcript (CART) is a neuropeptide first discovered in the striatum of the rat brain. Later, the genetic sequence and function of CART peptide (CARTp) was found to be conserved among multiple mammalian species. Over the 25 years, since its discovery, CART mRNA (Cartpt) expression has been reported widely throughout the central and peripheral nervous systems underscoring its role in diverse physiological functions. Here, we review the localization and function of CARTp as it relates to energy homeostasis. We summarize the expression changes of central and peripheral Cartpt in response to metabolic states and make use of available large data sets to gain additional insights into the anatomy of the Cartpt expressing vagal neurons and their expression patterns in the gut. Furthermore, we provide an overview of the role of CARTp as an anorexigenic signal and its effect on energy expenditure and body weight control with insights from both pharmacological and transgenic animal studies. Subsequently, we discuss the role of CARTp in the pathophysiology of obesity and review important new developments towards identifying a candidate receptor for CARTp signalling. Altogether, the field of CARTp research has made rapid and substantial progress recently, and we review the case for considering CARTp as a potential therapeutic target for stemming the obesity epidemic.
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Affiliation(s)
- Arashdeep Singh
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA; Center for Integrative Cardiovascular and Metabolic Disease, University of Florida, Gainesville, FL, USA
| | - Alan Moreira de Araujo
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA; Center for Integrative Cardiovascular and Metabolic Disease, University of Florida, Gainesville, FL, USA
| | - Jean-Philippe Krieger
- Department of Metabolic Physiology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Macarena Vergara
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA; Center for Integrative Cardiovascular and Metabolic Disease, University of Florida, Gainesville, FL, USA
| | - Chi Kin Ip
- Neuroscience Division, Garvan Institute of Medical Research, Darlinghurst, Sydney, Australia; Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Guillaume de Lartigue
- Department of Pharmacodynamics, College of Pharmacy, University of Florida, Gainesville, FL, USA; Center for Integrative Cardiovascular and Metabolic Disease, University of Florida, Gainesville, FL, USA.
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G protein-coupled receptor GPR151 is involved in trigeminal neuropathic pain through the induction of Gβγ/extracellular signal-regulated kinase-mediated neuroinflammation in the trigeminal ganglion. Pain 2021; 162:1434-1448. [PMID: 33239523 DOI: 10.1097/j.pain.0000000000002156] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 11/18/2020] [Indexed: 12/18/2022]
Abstract
ABSTRACT Trigeminal nerve injury-induced neuropathic pain is a debilitating chronic orofacial pain syndrome but lacks effective treatment. G protein-coupled receptors (GPCRs), especially orphan GPCRs (oGPCRs) are important therapeutic targets in pain medicine. Here, we screened upregulated oGPCRs in the trigeminal ganglion (TG) after partial infraorbital nerve transection (pIONT) and found that Gpr151 was the most significantly upregulated oGPCRs. Gpr151 mRNA was increased from pIONT day 3 and maintained for more than 21 days. Furthermore, GPR151 was expressed in the neurons of the TG after pIONT. Global mutation or knockdown of Gpr151 in the TG attenuated pIONT-induced mechanical allodynia. In addition, the excitability of TG neurons was increased after pIONT in wild-type (WT) mice, but not in Gpr151-/- mice. Notably, GPR151 bound to Gαi protein, but not Gαq, Gα12, or Gα13, and activated the extracellular signal-regulated kinase (ERK) through Gβγ. Extracellular signal-regulated kinase was also activated by pIONT in the TG of WT mice, but not in Gpr151-/- mice. Gene microarray showed that Gpr151 mutation reduced the expression of a large number of neuroinflammation-related genes that were upregulated in WT mice after pIONT, including chemokines CCL5, CCL7, CXCL9, and CXCL10. The mitogen-activated protein kinase inhibitor (PD98059) attenuated mechanical allodynia and reduced the upregulation of these chemokines after pIONT. Collectively, this study not only revealed the involvement of GPR151 in the maintenance of trigeminal neuropathic pain but also identified GPR151 as a Gαi-coupled receptor to induce ERK-dependent neuroinflammation. Thus, GPR151 may be a potential drug target for the treatment of trigeminal neuropathic pain.
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Yosten GLC, Haddock CJ, Harada CM, Almeida-Pereira G, Kolar GR, Stein LM, Hayes MR, Salvemini D, Samson WK. Past, present and future of cocaine- and amphetamine-regulated transcript peptide. Physiol Behav 2021; 235:113380. [PMID: 33705816 DOI: 10.1016/j.physbeh.2021.113380] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/22/2021] [Accepted: 03/01/2021] [Indexed: 01/02/2023]
Abstract
The existence of the peptide encoded by the cocaine- and amphetamine-regulated transcript (Cartpt) has been recognized since 1981, but it was not until 1995, that the gene encoding CART peptide (CART) was identified. With the availability of the predicted protein sequence of CART investigators were able to identify sites of peptide localization, which then led to numerous approaches attempting to clarify CART's multiple pharmacologic effects and even provide evidence of potential physiologic relevance. Although not without controversy, a picture emerged of the importance of CART in ingestive behaviors, reward behaviors and even pain sensation. Despite the wealth of data hinting at the significance of CART, in the absence of an identified receptor, the full potential for this peptide or its analogs to be developed into therapeutic agents remained unrealized. There was evidence favoring the action of CART via a G protein-coupled receptor (GPCR), but despite multiple attempts the identity of that receptor eluded investigators until recently. Now with the identification of the previously orphaned GPCR, GPR160, as a receptor for CART, focus on this pluripotent neuropeptide will in all likelihood experience a renaissance and the potential for the development of pharmcotherapies targeting GPR160 seems within reach.
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Affiliation(s)
- Gina L C Yosten
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA; Henry and Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, MO 63104, USA
| | - Christopher J Haddock
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA
| | - Caron M Harada
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA; Henry and Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, MO 63104, USA
| | - Gislaine Almeida-Pereira
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA
| | - Grant R Kolar
- Henry and Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, MO 63104, USA; Department of Pathology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA
| | - Lauren M Stein
- Department of Psychiatry, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Matthew R Hayes
- Department of Psychiatry, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Daniela Salvemini
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA; Henry and Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, MO 63104, USA
| | - Willis K Samson
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, MO 63104, USA; Henry and Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, MO 63104, USA.
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Haddock CJ, Almeida-Pereira G, Stein LM, Hayes MR, Kolar GR, Samson WK, Yosten GLC. Signaling in rat brainstem via Gpr160 is required for the anorexigenic and antidipsogenic actions of cocaine- and amphetamine-regulated transcript peptide. Am J Physiol Regul Integr Comp Physiol 2021; 320:R236-R249. [PMID: 33206556 PMCID: PMC7988768 DOI: 10.1152/ajpregu.00096.2020] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 11/05/2020] [Accepted: 11/07/2020] [Indexed: 12/26/2022]
Abstract
Recent work identified Gpr160 as a candidate receptor for cocaine- and amphetamine-regulated transcript peptide (CARTp) and described its role in pain modulation. The aims of the present study were to determine if Gpr160 is required for the CARTp's ability to reduce food intake and water intake and to initially identify the distribution of Gpr160-like immunoreactivity (Gpr160ir) in the rat brain. A passive immunoneutralization approach targeting Gpr160 was used to block the behavioral effects of a pharmacological dose of CARTp in the fourth cerebroventricle (4V) of rats and to determine the importance of endogenously produced CARTp in the control of ingestive behaviors. Passive immunoneutralization of Gpr160 in the 4V blocked the actions of CARTp to inhibit food intake and water intake. Blockade of Gpr160 in the 4V, independent of pharmacological CART treatment, caused an increase in both overnight food intake and water intake. The decrease in food intake, but not water intake, caused by central injection of CARTp was demonstrated to be interrupted by prior administration of a glucagon-like peptide 1 (GLP-1) receptor antagonist. Gpr160ir was observed in several, distinct sites throughout the rat brain, where CARTp staining has been described. Importantly, Gpr160ir was observed to be present in both neuronal and nonneuronal cell types. These data support the hypothesis that Gpr160 is required for the anorexigenic actions of central CARTp injection and extend these findings to water drinking. Gpr160ir was observed in both neuronal and nonneuronal cell types in regions known to be important in the multiple pharmacological effects of CARTp, identifying those areas as targets for future compromise of function studies.
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Affiliation(s)
- Christopher J Haddock
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Gislaine Almeida-Pereira
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Lauren M Stein
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Matthew R Hayes
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Grant R Kolar
- Department of Pathology, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Willis K Samson
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, Missouri
| | - Gina L C Yosten
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St. Louis, Missouri
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46
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Abid MSR, Mousavi S, Checco JW. Identifying Receptors for Neuropeptides and Peptide Hormones: Challenges and Recent Progress. ACS Chem Biol 2021; 16:251-263. [PMID: 33539706 DOI: 10.1021/acschembio.0c00950] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Intercellular signaling events mediated by neuropeptides and peptide hormones represent important targets for both basic science and drug discovery. For many bioactive peptides, the protein receptors that transmit information across the receiving cell membrane are not known, severely limiting these signaling pathways as potential therapeutic targets. Identifying the receptor(s) for a given peptide of interest is complicated by several factors. Most notably, cell-cell signaling peptides are generated through dynamic biosynthetic pathways, can act on many different families of receptor proteins, and can participate in complex ligand-receptor interactions that extend beyond a simple one-to-one archetype. Here, we discuss recent methodological advances to identify signaling partners for bioactive peptides. Recent efforts have centered on methods to identify candidate receptors via transcript expression, methods to match peptide-receptor pairs through high throughput screening, and methods to capture direct ligand-receptor interactions using chemical probes. Future applications of the receptor identification approaches discussed here, as well as technical advancements to address their limitations, promise to lead to a greater understanding of how cells communicate to deliver complex physiologies. Importantly, such advancements will likely provide novel targets for the treatment of human diseases within the central nervous and endocrine systems.
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Affiliation(s)
- Md Shadman Ridwan Abid
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Somayeh Mousavi
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - James W. Checco
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
- The Nebraska Center for Integrated Biomolecular Communication (NCIBC), University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
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47
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Walker LC. A balancing act: the role of pro- and anti-stress peptides within the central amygdala in anxiety and alcohol use disorders. J Neurochem 2021; 157:1615-1643. [PMID: 33450069 DOI: 10.1111/jnc.15301] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/18/2020] [Accepted: 01/06/2021] [Indexed: 12/21/2022]
Abstract
The central nucleus of the amygdala (CeA) is widely implicated as a structure that integrates both appetitive and aversive stimuli. While intrinsic CeA microcircuits primarily consist of GABAergic neurons that regulate amygdala output, a notable feature of the CeA is the heterogeneity of neuropeptides and neuropeptide/neuromodulator receptors that it expresses. There is growing interest in the role of the CeA in mediating psychopathologies, including stress and anxiety states and their interactions with alcohol use disorders. Within the CeA, neuropeptides and neuromodulators often exert pro- or anti- stress actions, which can influence anxiety and alcohol associated behaviours. In turn, alcohol use can cause adaptions within the CeA, which may render an individual more vulnerable to stress which is a major trigger of relapse to alcohol seeking. This review examines the neurocircuitry, neurochemical phenotypes and how pro- and anti-stress peptide systems act within the CeA to regulate anxiety and alcohol seeking, focusing on preclinical observations from animal models. Furthermore, literature exploring the targeting of genetically defined populations or neuronal ensembles and the role of the CeA in mediating sex differences in stress x alcohol interactions are explored.
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Affiliation(s)
- Leigh C Walker
- Florey Institute of Neuroscience and Mental Health, Parkville, Vic, Australia.,Florey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Vic, Australia
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48
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Sapio MR, Vazquez FA, Loydpierson AJ, Maric D, Kim JJ, LaPaglia DM, Puhl HL, Lu VB, Ikeda SR, Mannes AJ, Iadarola MJ. Comparative Analysis of Dorsal Root, Nodose and Sympathetic Ganglia for the Development of New Analgesics. Front Neurosci 2021; 14:615362. [PMID: 33424545 PMCID: PMC7793666 DOI: 10.3389/fnins.2020.615362] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/25/2020] [Indexed: 12/18/2022] Open
Abstract
Interoceptive and exteroceptive signals, and the corresponding coordinated control of internal organs and sensory functions, including pain, are received and orchestrated by multiple neurons within the peripheral, central and autonomic nervous systems. A central aim of the present report is to obtain a molecularly informed basis for analgesic drug development aimed at peripheral rather than central targets. We compare three key peripheral ganglia: nodose, sympathetic (superior cervical), and dorsal root ganglia in the rat, and focus on their molecular composition using next-gen RNA-Seq, as well as their neuroanatomy using immunocytochemistry and in situ hybridization. We obtained quantitative and anatomical assessments of transmitters, receptors, enzymes and signaling pathways mediating ganglion-specific functions. Distinct ganglionic patterns of expression were observed spanning ion channels, neurotransmitters, neuropeptides, G-protein coupled receptors (GPCRs), transporters, and biosynthetic enzymes. The relationship between ganglionic transcript levels and the corresponding protein was examined using immunohistochemistry for select, highly expressed, ganglion-specific genes. Transcriptomic analyses of spinal dorsal horn and intermediolateral cell column (IML), which form the termination of primary afferent neurons and the origin of preganglionic innervation to the SCG, respectively, disclosed pre- and post-ganglionic molecular-level circuits. These multimodal investigations provide insight into autonomic regulation, nodose transcripts related to pain and satiety, and DRG-spinal cord and IML-SCG communication. Multiple neurobiological and pharmacological contexts can be addressed, such as discriminating drug targets and predicting potential side effects, in analgesic drug development efforts directed at the peripheral nervous system.
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Affiliation(s)
- Matthew R Sapio
- Anesthesia Section, Department of Perioperative Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Fernando A Vazquez
- Anesthesia Section, Department of Perioperative Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Amelia J Loydpierson
- Anesthesia Section, Department of Perioperative Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Dragan Maric
- Flow and Imaging Cytometry Core Facility, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
| | - Jenny J Kim
- Anesthesia Section, Department of Perioperative Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Danielle M LaPaglia
- Anesthesia Section, Department of Perioperative Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Henry L Puhl
- Section on Neurotransmitter Signaling, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
| | - Van B Lu
- Section on Neurotransmitter Signaling, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
| | - Stephen R Ikeda
- Section on Neurotransmitter Signaling, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
| | - Andrew J Mannes
- Anesthesia Section, Department of Perioperative Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Michael J Iadarola
- Anesthesia Section, Department of Perioperative Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
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49
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Walker LC, Hand LJ, Letherby B, Huckstep KL, Campbell EJ, Lawrence AJ. Cocaine and amphetamine regulated transcript (CART) signalling in the central nucleus of the amygdala modulates stress-induced alcohol seeking. Neuropsychopharmacology 2021; 46:325-333. [PMID: 32826981 PMCID: PMC7852518 DOI: 10.1038/s41386-020-00807-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/19/2020] [Accepted: 08/11/2020] [Indexed: 12/16/2022]
Abstract
The central nucleus of the amygdala (CeA) is a key hub of the neural circuitry regulating alcohol and stress interactions. However, the exact neuronal populations that govern this interaction are not well defined. Here we examined the role of the neuropeptide cocaine and amphetamine regulated transcript (CART) within the CeA in stress-induced alcohol seeking. We found that CART-containing neurons are predominantly expressed in the capsular/lateral division of the CeA and are a subpopulation of protein kinase Cδ (PKCδ) cells, distinct from corticotrophin releasing factor (CRF)-expressing cells. Both stress (yohimbine) and stress-induced alcohol seeking activated CART cells within the CeA, while neutralisation of endogenous CeA CART signalling (via antibody administration) attenuated stress-induced alcohol, but not sucrose seeking. Further, blocking CART signalling within the CeA did not alter the motivation to obtain and consume alcohol but did attenuate stressor-induced anxiety-like behaviour during abstinence from alcohol. Together, these data identify CeA CART cells as a subpopulation of PKCδ cells that influence stress × alcohol interactions and mediate stress-induced alcohol seeking behaviours.
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Affiliation(s)
- Leigh C. Walker
- grid.418025.a0000 0004 0606 5526Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, VIC 3052 Australia ,grid.1008.90000 0001 2179 088XFlorey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, 3052 Australia
| | - Lexi J. Hand
- grid.418025.a0000 0004 0606 5526Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, VIC 3052 Australia ,grid.1008.90000 0001 2179 088XFlorey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, 3052 Australia
| | - Bethany Letherby
- grid.418025.a0000 0004 0606 5526Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, VIC 3052 Australia ,grid.1008.90000 0001 2179 088XFlorey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, 3052 Australia
| | - Kate L. Huckstep
- grid.418025.a0000 0004 0606 5526Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, VIC 3052 Australia ,grid.1008.90000 0001 2179 088XFlorey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, 3052 Australia
| | - Erin J. Campbell
- grid.418025.a0000 0004 0606 5526Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, VIC 3052 Australia ,grid.1008.90000 0001 2179 088XFlorey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, 3052 Australia
| | - Andrew J. Lawrence
- grid.418025.a0000 0004 0606 5526Florey Institute of Neuroscience and Mental Health, Parkville, Melbourne, VIC 3052 Australia ,grid.1008.90000 0001 2179 088XFlorey Department of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, 3052 Australia
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50
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Doyle TM, Hutchinson MR, Braden K, Janes K, Staikopoulos V, Chen Z, Neumann WL, Spiegel S, Salvemini D. Sphingosine-1-phosphate receptor subtype 1 activation in the central nervous system contributes to morphine withdrawal in rodents. J Neuroinflammation 2020; 17:314. [PMID: 33092620 PMCID: PMC7584082 DOI: 10.1186/s12974-020-01975-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 09/30/2020] [Indexed: 01/08/2023] Open
Abstract
Opioid therapies for chronic pain are undermined by many adverse side effects that reduce their efficacy and lead to dependence, abuse, reduced quality of life, and even death. We have recently reported that sphingosine-1-phosphate (S1P) 1 receptor (S1PR1) antagonists block the development of morphine-induced hyperalgesia and analgesic tolerance. However, the impact of S1PR1 antagonists on other undesirable side effects of opioids, such as opioid-induced dependence, remains unknown. Here, we demonstrate that naloxone-precipitated morphine withdrawal in mice altered de novo sphingolipid metabolism in the dorsal horn of the spinal cord and increased S1P that accompanied the manifestation of several withdrawal behaviors. Blocking de novo sphingolipid metabolism with intrathecal administration of myriocin, an inhibitor of serine palmitoyltransferase, blocked naloxone-precipitated withdrawal. Noteworthy, we found that competitive (NIBR-15) and functional (FTY720) S1PR1 antagonists attenuated withdrawal behaviors in mice. Mechanistically, at the level of the spinal cord, naloxone-precipitated withdrawal was associated with increased glial activity and formation of the potent inflammatory/neuroexcitatory cytokine interleukin-1β (IL-1β); these events were attenuated by S1PR1 antagonists. These results provide the first molecular insight for the role of the S1P/S1PR1 axis during opioid withdrawal. Our data identify S1PR1 antagonists as potential therapeutics to mitigate opioid-induced dependence and support repurposing the S1PR1 functional antagonist FTY720, which is FDA-approved for multiple sclerosis, as an opioid adjunct.
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Affiliation(s)
- Timothy M Doyle
- Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd, St. Louis, MO, 63104, USA.,Department of Pharmacology and Physiology, Saint Louis University School of Medicine, 1402 South Grand Blvd, St. Louis, MO, 63104, USA
| | - Mark R Hutchinson
- Discipline of Physiology, University of Adelaide, Adelaide, South Australia, 5005, Australia.,Institute for Photonics and Advanced Sensing, University of Adelaide, Adelaide, South Australia, 5005, Australia.,ARC Centre of Excellence for Nanoscale BioPhotonics, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Kathryn Braden
- Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd, St. Louis, MO, 63104, USA.,Department of Pharmacology and Physiology, Saint Louis University School of Medicine, 1402 South Grand Blvd, St. Louis, MO, 63104, USA
| | - Kali Janes
- Department of Pharmacology and Physiology, Saint Louis University School of Medicine, 1402 South Grand Blvd, St. Louis, MO, 63104, USA
| | - Vicky Staikopoulos
- Discipline of Physiology, University of Adelaide, Adelaide, South Australia, 5005, Australia.,Institute for Photonics and Advanced Sensing, University of Adelaide, Adelaide, South Australia, 5005, Australia.,ARC Centre of Excellence for Nanoscale BioPhotonics, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Zhoumou Chen
- Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd, St. Louis, MO, 63104, USA.,Department of Pharmacology and Physiology, Saint Louis University School of Medicine, 1402 South Grand Blvd, St. Louis, MO, 63104, USA
| | - William L Neumann
- Department of Pharmaceutical Sciences, School of Pharmacy, Southern Illinois University Edwardsville, 200 University Park, Edwardsville, IL, 62026, USA
| | - Sarah Spiegel
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, School of Medicine, 1101 E Marshall St, Richmond, VA, 23298, USA
| | - Daniela Salvemini
- Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, 1402 South Grand Blvd, St. Louis, MO, 63104, USA. .,Department of Pharmacology and Physiology, Saint Louis University School of Medicine, 1402 South Grand Blvd, St. Louis, MO, 63104, USA.
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