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Perisic M, Woolcock K, Hering A, Mendel H, Muttenthaler M. Oxytocin and vasopressin signaling in health and disease. Trends Biochem Sci 2024; 49:361-377. [PMID: 38418338 DOI: 10.1016/j.tibs.2024.01.010] [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: 09/21/2023] [Revised: 01/22/2024] [Accepted: 01/26/2024] [Indexed: 03/01/2024]
Abstract
Neurohypophysial peptides are ancient and evolutionarily highly conserved neuropeptides that regulate many crucial physiological functions in vertebrates and invertebrates. The human neurohypophysial oxytocin/vasopressin (OT/VP) signaling system with its four receptors has become an attractive drug target for a variety of diseases, including cancer, pain, cardiovascular indications, and neurological disorders. Despite its promise, drug development faces hurdles, including signaling complexity, selectivity and off-target concerns, translational interspecies differences, and inefficient drug delivery. In this review we dive into the complexity of the OT/VP signaling system in health and disease, provide an overview of relevant pharmacological probes, and discuss the latest trends in therapeutic lead discovery and drug development.
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Affiliation(s)
- Monika Perisic
- Institute of Biological Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria; Vienna Doctoral School in Chemistry, University of Vienna, 1090 Vienna, Austria
| | - Katrina Woolcock
- Institute of Biological Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria
| | - Anke Hering
- Institute for Molecular Bioscience, The University of Queensland, 4072 Brisbane, Australia
| | - Helen Mendel
- Institute for Molecular Bioscience, The University of Queensland, 4072 Brisbane, Australia
| | - Markus Muttenthaler
- Institute of Biological Chemistry, Faculty of Chemistry, University of Vienna, 1090 Vienna, Austria; Institute for Molecular Bioscience, The University of Queensland, 4072 Brisbane, Australia.
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2
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Danoff JS, Whelan EA, Connelly JJ. Is oxytocin receptor signaling really dispensable for social attachment? COMPREHENSIVE PSYCHONEUROENDOCRINOLOGY 2023; 14:100178. [PMID: 36872951 PMCID: PMC9981807 DOI: 10.1016/j.cpnec.2023.100178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 02/14/2023] [Indexed: 02/24/2023] Open
Affiliation(s)
- Joshua S Danoff
- Department of Psychology, Program in Fundamental Neuroscience, University of Virginia, United States
| | - Emma A Whelan
- Department of Psychology, Program in Fundamental Neuroscience, University of Virginia, United States
| | - Jessica J Connelly
- Department of Psychology, Program in Fundamental Neuroscience, University of Virginia, United States
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3
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Ringuet MT, Furness JB, Furness SGB. G protein-coupled receptor interactions and modification of signalling involving the ghrelin receptor, GHSR1a. J Neuroendocrinol 2022; 34:e13077. [PMID: 34931385 DOI: 10.1111/jne.13077] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/05/2021] [Indexed: 12/28/2022]
Abstract
The growth hormone secretagogue receptor 1a (GHSR1a) is intriguing because of its potential as a therapeutic target and its diverse molecular interactions. Initial studies of the receptor focused on the potential therapeutic ability for growth hormone (GH) release to reduce wasting in aging individuals, as well as food intake regulation for treatment of cachexia. Known roles of GHSR1a now extend to regulation of neurogenesis, learning and memory, gastrointestinal motility, glucose/lipid metabolism, the cardiovascular system, neuronal protection, motivational salience, and hedonic feeding. Ghrelin, the endogenous agonist of GHSR1a, is primarily located in the stomach and is absent from the central nervous system (CNS), including the spinal cord. However, ghrelin in the circulation does have access to a small number of CNS sites, including the arcuate nucleus, which is important in feeding control. At some sites, such as at somatotrophs, GHSR1a has high constitutive activity. Typically, ghrelin-dependent and constitutive GHSR1a activation occurs via Gαq/11 pathways. In vitro and in vivo data suggest that GHSR1a heterodimerises with multiple G protein-coupled receptors (GPCRs), including dopamine D1 and D2, serotonin 2C, orexin, oxytocin and melanocortin 3 receptors (MCR3), as well as the MCR3 accessory protein, MRAP2, providing possible mechanisms for its many physiological effects. In all cases, the receptor interaction changes downstream signalling and the responses to receptor agonists. This review discusses the signalling mechanisms of GHSR1a alone and in combination with other GPCRs, and explores the physiological consequences of GHSR1a coupling with other GPCRs.
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Affiliation(s)
- Mitchell Ty Ringuet
- Department of Anatomy and Physiology, University of Melbourne, Parkville, VIC, Australia
| | - John Barton Furness
- Department of Anatomy and Physiology, University of Melbourne, Parkville, VIC, Australia
- Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
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4
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Muratspahić E, Gattringer J, Gruber CW. Use of BRET to Measure β-Arrestin Recruitment at Oxytocin and Vasopressin Receptors. Methods Mol Biol 2022; 2384:221-229. [PMID: 34550577 DOI: 10.1007/978-1-0716-1759-5_13] [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] [Indexed: 06/13/2023]
Abstract
Bioluminescence resonance energy transfer (BRET) is a cutting-edge biophysical technique used for exploring G protein-coupled receptor (GPCR) pharmacology. BRET relies on the nonradiative energy transfer from a luciferase energy donor to an acceptor fluorophore after oxidation of a luciferase substrate. This energy transfer occurs only if the donor and acceptor are within close proximity. Over the past few years, BRET has been successfully applied to study GPCR oligomerization as well as interactions of receptors with G proteins, G protein-coupled receptor kinases (GRKs), or β-arrestins. Herein, we describe how BRET can be applied to study signaling at the oxytocin receptor (OTR) and vasopressin receptors, thereby enabling the identification of (biased) ligands and molecular probes for investigating receptor functionality.
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Affiliation(s)
- Edin Muratspahić
- Institute of Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Jasmin Gattringer
- Institute of Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Christian W Gruber
- Institute of Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria.
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Co-Stimulation of Oxytocin and Arginine-Vasopressin Receptors Affect Hypothalamic Neurospheroid Size. Int J Mol Sci 2021; 22:ijms22168464. [PMID: 34445168 PMCID: PMC8395152 DOI: 10.3390/ijms22168464] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/30/2021] [Accepted: 08/03/2021] [Indexed: 12/15/2022] Open
Abstract
Oxytocin (OXT) is a neuropeptide involved in a plethora of behavioral and physiological processes. However, there is a prominent lack of 3D cell culture models that investigate the effects of OXT on a cellular/molecular level. In this study, we established a hypothalamic neuronal spheroid model to investigate the cellular response in a more realistic 3D setting. Our data indicate that the formation of spheroids itself does not alter the basic characteristics of the cell line and that markers of cellular morphology and connectivity are stably expressed. We found that both OXT and arginine vasopressin (AVP) treatment increase spheroid size (surface area and volume), as well as individual nucleus size, which serves as an indicator for cellular proliferation. The cellular response to both OXT and AVP seems mainly to be mediated by the AVP receptor 1a (V1aR); however, the OXT receptor (OXTR) contributes significantly to the observed proliferative effect. When we blocked the OXTR pharmacologically or knocked down the OXTR by siRNA, the OXT- or AVP-induced cellular proliferation decreased. In summary, we established a 3D cell culture model of the neuronal response to OXT and AVP and found that spheroids react to the treatment via their respective receptors but also via cross-talk between the two receptor types.
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6
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Carter CS, Kenkel WM, MacLean EL, Wilson SR, Perkeybile AM, Yee JR, Ferris CF, Nazarloo HP, Porges SW, Davis JM, Connelly JJ, Kingsbury MA. Is Oxytocin "Nature's Medicine"? Pharmacol Rev 2021; 72:829-861. [PMID: 32912963 PMCID: PMC7495339 DOI: 10.1124/pr.120.019398] [Citation(s) in RCA: 187] [Impact Index Per Article: 62.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Oxytocin is a pleiotropic, peptide hormone with broad implications for general health, adaptation, development, reproduction, and social behavior. Endogenous oxytocin and stimulation of the oxytocin receptor support patterns of growth, resilience, and healing. Oxytocin can function as a stress-coping molecule, an anti-inflammatory, and an antioxidant, with protective effects especially in the face of adversity or trauma. Oxytocin influences the autonomic nervous system and the immune system. These properties of oxytocin may help explain the benefits of positive social experiences and have drawn attention to this molecule as a possible therapeutic in a host of disorders. However, as detailed here, the unique chemical properties of oxytocin, including active disulfide bonds, and its capacity to shift chemical forms and bind to other molecules make this molecule difficult to work with and to measure. The effects of oxytocin also are context-dependent, sexually dimorphic, and altered by experience. In part, this is because many of the actions of oxytocin rely on its capacity to interact with the more ancient peptide molecule, vasopressin, and the vasopressin receptors. In addition, oxytocin receptor(s) are epigenetically tuned by experience, especially in early life. Stimulation of G-protein–coupled receptors triggers subcellular cascades allowing these neuropeptides to have multiple functions. The adaptive properties of oxytocin make this ancient molecule of special importance to human evolution as well as modern medicine and health; these same characteristics also present challenges to the use of oxytocin-like molecules as drugs that are only now being recognized.
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Affiliation(s)
- C Sue Carter
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - William M Kenkel
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - Evan L MacLean
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - Steven R Wilson
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - Allison M Perkeybile
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - Jason R Yee
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - Craig F Ferris
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - Hossein P Nazarloo
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - Stephen W Porges
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - John M Davis
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - Jessica J Connelly
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
| | - Marcy A Kingsbury
- Kinsey Institute, Indiana University, Bloomington, Indiana (C.S.C., W.M.K., A.M.P., H.P.N., S.W.P.); School of Anthropology, Department of Psychology, and College of Veterinary Medicine, University of Arizona, Tucson, Arizona (E.L.M.); Department of Chemistry, University of Oslo, Oslo, Norway (S.R.W.); Institute of Animal Welfare Science, University of Veterinary Medicine, Vienna, Austria (J.R.Y.); Departments of Psychology and Pharmaceutical Sciences, Northeastern University, Boston, Massachusetts (C.F.F.); Department of Psychiatry, University of Illinois at Chicago, Chicago, Illinois (J.M.D.); Department of Psychology, University of Virginia, Charlottesville, Virginia (J.J.C.); and Department of Pediatrics, Massachusetts General Hospital and Harvard Medical School, Charleston, Massachusetts (M.A.K.)
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7
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Stadler B, Whittaker MR, Exintaris B, Middendorff R. Oxytocin in the Male Reproductive Tract; The Therapeutic Potential of Oxytocin-Agonists and-Antagonists. Front Endocrinol (Lausanne) 2020; 11:565731. [PMID: 33193084 PMCID: PMC7642622 DOI: 10.3389/fendo.2020.565731] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 09/07/2020] [Indexed: 12/12/2022] Open
Abstract
In this review, the role of oxytocin and oxytocin-like agents (acting via the oxytocin receptor and belonging to the oxytocin-family) in the male reproductive tract is considered. Previous research (dating back over 60 years) is revised and connected with recently found aspects of the role oxytocin plays in male reproductive health. The local expression of oxytocin and its receptor in the male reproductive tract of different species is summarized. Colocalization and possible crosstalk to other agents and receptors and their resulting effects are discussed. The role of the newly reported oxytocin focused signaling pathways in the male reproductive tract, other than mediating contractility, is critically examined. The structure and effect of the most promising oxytocin-agonists and -antagonists are reviewed for their potential in treating male disorders with origins in the male reproductive tract such as prostate diseases and ejaculatory disorders.
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Affiliation(s)
- Beatrix Stadler
- Institute of Anatomy and Cell Biology, Justus-Liebig-University, Giessen, Germany
| | - Michael R. Whittaker
- Drug Discovery Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Melbourne, VIC, Australia
| | - Betty Exintaris
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Melbourne, VIC, Australia
| | - Ralf Middendorff
- Institute of Anatomy and Cell Biology, Justus-Liebig-University, Giessen, Germany
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9
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Omri S, Tahiri H, Pierre WC, Desjarlais M, Lahaie I, Loiselle SE, Rezende F, Lodygensky G, Hebert TE, Ong H, Chemtob S. Propranolol Attenuates Proangiogenic Activity of Mononuclear Phagocytes: Implication in Choroidal Neovascularization. Invest Ophthalmol Vis Sci 2020; 60:4632-4642. [PMID: 31682714 DOI: 10.1167/iovs.18-25502] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose Targeting β-adrenergic receptor signaling with propranolol has emerged as a potential candidate to counteract choroidal neovascularization (CNV). Little is known of its effect on macrophages, which play a critical role in CNV. We investigated the effect of propranolol on angiogenic response of mononuclear phagocytes (MPs). Methods The angiogenic effect of propranolol was evaluated in laser-induced CNV model. Mice received intraperitoneal injections of propranolol (6 mg/kg/d) or vehicle. CNV area and inflammatory cells were determined respectively by using lectin staining and an anti-IBA-1 antibody on RPE/choroid flat mounts. Inflammatory gene expression was evaluated by quantitative (q) PCR analysis. Mechanisms of propranolol was studied in MP cell lines J774 and RAW264.7 and in primary peritoneal macrophages. Expression of pro- and antiangiogenic mediators was studied. In addition, effects of propranolol treatment of MPs was assessed on choroidal explant. Results CNV was attenuated by propranolol and concomitantly associated with decreased inflammatory mediators IL-6 and TNFα, albeit with accumulation of (β-adrenoceptor harboring) MPs in the CNV area. Conditioned media from MPs preincubated with propranolol exerted antiangiogenic effects. Treatment of J774 confirmed the attenuation of inflammatory response to propranolol and increased cleaved caspase-3 on choroidal explant. We found that propranolol increased pigment epithelium-derived factor (PEDF) expression in MPs. Trapping of PEDF with an antibody abrogated antiangiogenic effects of propranolol. PEDF was also detected in CNV-associated MPs. Conclusions We hereby show that propranolol confers on MPs antiangiogenic properties by increasing PEDF expression, which complements its effects on vascular tissue resulting in inhibition of choroidal vasoproliferation in inflammatory conditions. The study supports possible use of propranolol as a therapeutic modality for CNV.
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Affiliation(s)
- Samy Omri
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Center, Université de Montréal, Montreal, Quebec, Canada
| | - Houda Tahiri
- Department of Pharmacology, Maisonneuve-Rosemont Hospital Research Center, Université de Montréal, Montreal, Quebec, Canada
| | - Wyston Chadwick Pierre
- Department of Pharmacology, Sainte-Justine Hospital Research Center, Université de Montréal, Montreal, Quebec, Canada
| | - Michel Desjarlais
- Department of Pharmacology, Maisonneuve-Rosemont Hospital Research Center, Université de Montréal, Montreal, Quebec, Canada
| | - Isabelle Lahaie
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Center, Université de Montréal, Montreal, Quebec, Canada
| | - Sarah-Eve Loiselle
- Department of Biomedical Sciences, Sainte-Justine Hospital Research Center, Université de Montréal, Montreal, Quebec, Canada
| | - Flavio Rezende
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Center, Université de Montréal, Montreal, Quebec, Canada
| | - Gregory Lodygensky
- Department of Pediatrics, Faculty of Medicine, Sainte-Justine Hospital Research Center, Université de Montréal, Montreal, Quebec, Canada
| | - Terence E Hebert
- Department of Pharmacology & Therapeutics, McGill University, Montreal, Quebec, Canada
| | - Huy Ong
- Faculty of Pharmacy, Université de Montréal, Montreal, Canada
| | - Sylvain Chemtob
- Department of Ophthalmology, Maisonneuve-Rosemont Hospital Research Center, Université de Montréal, Montreal, Quebec, Canada.,Department of Pediatrics, Université de Montréal, Montreal, Canada.,Department of Ophthalmology, Université de Montréal, Montreal, Canada.,Department of Pharmacology, Université de Montréal, Montreal, Canada
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10
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Exploring functional consequences of GPCR oligomerization requires a different lens. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2020; 169:181-211. [DOI: 10.1016/bs.pmbts.2019.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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A ghrelin receptor and oxytocin receptor heterocomplex impairs oxytocin mediated signalling. Neuropharmacology 2019; 152:90-101. [DOI: 10.1016/j.neuropharm.2018.12.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 11/21/2018] [Accepted: 12/18/2018] [Indexed: 12/31/2022]
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12
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Sleno R, Hébert TE. Shaky ground - The nature of metastable GPCR signalling complexes. Neuropharmacology 2019; 152:4-14. [PMID: 30659839 DOI: 10.1016/j.neuropharm.2019.01.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/20/2018] [Accepted: 01/16/2019] [Indexed: 01/19/2023]
Abstract
How G protein-coupled receptors (GPCR) interact with one another remains an area of active investigation. Obligate dimers of class C GPCRs such as metabotropic GABA and glutamate receptors are well accepted, although whether this is a general feature of other GPCRs is still strongly debated. In this review, we focus on the idea that GPCR dimers and oligomers are better imagined as parts of larger metastable signalling complexes. We discuss the nature of functional oligomeric entities, their stabilities and kinetic features and how structural and functional asymmetries of such metastable entities might have implications for drug discovery. This article is part of the Special Issue entitled 'Receptor heteromers and their allosteric receptor-receptor interactions'.
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Affiliation(s)
- Rory Sleno
- Marketed Pharmaceuticals and Medical Devices Bureau, Marketed Health Products Directorate, Health Products and Food Branch, Health Canada, Canada
| | - Terence E Hébert
- Department of Pharmacology and Therapeutics, McGill University, Canada.
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13
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Targeting the Oxytocin System: New Pharmacotherapeutic Approaches. Trends Pharmacol Sci 2019; 40:22-37. [DOI: 10.1016/j.tips.2018.11.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/27/2018] [Accepted: 11/01/2018] [Indexed: 12/27/2022]
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14
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Meizoso‐Huesca A, Villegas‐Comonfort S, Romero‐Ávila MT, García‐Sáinz JA. Free fatty acid receptor 4 agonists induce lysophosphatidic acid receptor 1 (
LPA
1
) desensitization independent of
LPA
1
internalization and heterodimerization. FEBS Lett 2018; 592:2612-2623. [DOI: 10.1002/1873-3468.13179] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 06/09/2018] [Accepted: 06/27/2018] [Indexed: 01/27/2023]
Affiliation(s)
- Aldo Meizoso‐Huesca
- Departamento de Biología Celular y del Desarrollo Instituto de Fisiología Celular Universidad Nacional Autónoma de México Mexico
| | - Sócrates Villegas‐Comonfort
- Departamento de Biología Celular y del Desarrollo Instituto de Fisiología Celular Universidad Nacional Autónoma de México Mexico
| | - M. Teresa Romero‐Ávila
- Departamento de Biología Celular y del Desarrollo Instituto de Fisiología Celular Universidad Nacional Autónoma de México Mexico
| | - J. Adolfo García‐Sáinz
- Departamento de Biología Celular y del Desarrollo Instituto de Fisiología Celular Universidad Nacional Autónoma de México Mexico
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15
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Jurek B, Neumann ID. The Oxytocin Receptor: From Intracellular Signaling to Behavior. Physiol Rev 2018; 98:1805-1908. [DOI: 10.1152/physrev.00031.2017] [Citation(s) in RCA: 408] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The many facets of the oxytocin (OXT) system of the brain and periphery elicited nearly 25,000 publications since 1930 (see FIGURE 1 , as listed in PubMed), which revealed central roles for OXT and its receptor (OXTR) in reproduction, and social and emotional behaviors in animal and human studies focusing on mental and physical health and disease. In this review, we discuss the mechanisms of OXT expression and release, expression and binding of the OXTR in brain and periphery, OXTR-coupled signaling cascades, and their involvement in behavioral outcomes to assemble a comprehensive picture of the central and peripheral OXT system. Traditionally known for its role in milk let-down and uterine contraction during labor, OXT also has implications in physiological, and also behavioral, aspects of reproduction, such as sexual and maternal behaviors and pair bonding, but also anxiety, trust, sociability, food intake, or even drug abuse. The many facets of OXT are, on a molecular basis, brought about by a single receptor. The OXTR, a 7-transmembrane G protein-coupled receptor capable of binding to either Gαior Gαqproteins, activates a set of signaling cascades, such as the MAPK, PKC, PLC, or CaMK pathways, which converge on transcription factors like CREB or MEF-2. The cellular response to OXT includes regulation of neurite outgrowth, cellular viability, and increased survival. OXTergic projections in the brain represent anxiety and stress-regulating circuits connecting the paraventricular nucleus of the hypothalamus, amygdala, bed nucleus of the stria terminalis, or the medial prefrontal cortex. Which OXT-induced patterns finally alter the behavior of an animal or a human being is still poorly understood, and studying those OXTR-coupled signaling cascades is one initial step toward a better understanding of the molecular background of those behavioral effects.
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Affiliation(s)
- Benjamin Jurek
- Department of Behavioural and Molecular Neurobiology, Institute of Zoology, University of Regensburg, Regensburg, Germany
| | - Inga D. Neumann
- Department of Behavioural and Molecular Neurobiology, Institute of Zoology, University of Regensburg, Regensburg, Germany
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Sleno R, Hébert TE. The Dynamics of GPCR Oligomerization and Their Functional Consequences. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2018; 338:141-171. [PMID: 29699691 DOI: 10.1016/bs.ircmb.2018.02.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The functional importance of G protein-coupled receptor (GPCR) oligomerization remains controversial. Although obligate dimers of class C GPCRs are well accepted, the generalizability of this phenomenon is still strongly debated with respect to other classes of GPCRs. In this review, we focus on understanding the organization and dynamics between receptor equivalents and their signaling partners in oligomeric receptor complexes, with a view toward integrating disparate viewpoints into a unified understanding. We discuss the nature of functional oligomeric entities, and how asymmetries in receptor structure and function created by oligomers might have implications for receptor function as allosteric machines and for future drug discovery.
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Oishi A, Karamitri A, Gerbier R, Lahuna O, Ahmad R, Jockers R. Orphan GPR61, GPR62 and GPR135 receptors and the melatonin MT 2 receptor reciprocally modulate their signaling functions. Sci Rep 2017; 7:8990. [PMID: 28827538 PMCID: PMC5566548 DOI: 10.1038/s41598-017-08996-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 07/14/2017] [Indexed: 01/14/2023] Open
Abstract
Understanding the function of orphan G protein-coupled receptors (GPCRs), whose cognate ligand is unknown, is of major importance as GPCRs are privileged drug targets for many diseases. Recent phylogenetic studies classified three orphan receptors, GPR61, GPR62 and GPR135 among the melatonin receptor subfamily, but their capacity to bind melatonin and their biochemical functions are not well characterized yet. We show here that GPR61, GPR62 and GPR135 do not bind [3H]-melatonin nor 2-[125I]iodomelatonin and do not respond to melatonin in several signaling assays. In contrast, the three receptors show extensive spontaneous ligand-independent activities on the cAMP, inositol phosphate and ß-arrestin pathways with distinct pathway-specific profiles. Spontaneous ß-arrestin recruitment internalizes all three GPRs in the endosomal compartment. Co-expression of the melatonin binding MT2 receptor with GPR61, GPR62 or GPR135 has several consequences such as (i) the formation of receptor heteromers, (ii) the inhibition of melatonin-induced ß-arrestin2 recruitment to MT2 and (iii) the decrease of elevated cAMP levels upon melatonin stimulation in cells expressing spontaneously active GPR61 and GPR62. Collectively, these data show that GPR61, GPR62 and GPR135 are unable to bind melatonin, but show a reciprocal regulatory interaction with MT2 receptors.
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Affiliation(s)
- Atsuro Oishi
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR, 8104, Paris, France.,University Paris Descartes, Paris, France
| | - Angeliki Karamitri
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR, 8104, Paris, France.,University Paris Descartes, Paris, France
| | - Romain Gerbier
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR, 8104, Paris, France.,University Paris Descartes, Paris, France
| | - Olivier Lahuna
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR, 8104, Paris, France.,University Paris Descartes, Paris, France
| | - Raise Ahmad
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR, 8104, Paris, France.,University Paris Descartes, Paris, France
| | - Ralf Jockers
- Inserm, U1016, Institut Cochin, Paris, France. .,CNRS UMR, 8104, Paris, France. .,University Paris Descartes, Paris, France.
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Kim SH, Bennett PR, Terzidou V. Advances in the role of oxytocin receptors in human parturition. Mol Cell Endocrinol 2017; 449:56-63. [PMID: 28119132 DOI: 10.1016/j.mce.2017.01.034] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/16/2017] [Accepted: 01/21/2017] [Indexed: 12/26/2022]
Abstract
Oxytocin (OT) is a neurohypophysial hormone which has been found to play a central role in the regulation of human parturition. The most established role of oxytocin/oxytocin receptor (OT/OTR) system in human parturition is the initiation of uterine contractions, however, recent evidence have demonstrated that it may have a more complex role including initiation of inflammation, regulation of miRNA expression, as well as mediation of other non-classical oxytocin actions via receptor crosstalk with other G protein-coupled receptors (GPCRs). In this review we highlight both established and newly emerging roles of OT/OTR system in human parturition and discuss the expanding potential for OTRs as pharmacological targets in the management of preterm labour.
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Affiliation(s)
- Sung Hye Kim
- Imperial College London, Parturition Research Group, Institute of Reproductive and Developmental Biology, Hammersmith Hospital Campus, Du Cane Road, East Acton, London W12 0NN, UK
| | - Phillip R Bennett
- Imperial College London, Parturition Research Group, Institute of Reproductive and Developmental Biology, Hammersmith Hospital Campus, Du Cane Road, East Acton, London W12 0NN, UK
| | - Vasso Terzidou
- Imperial College London, Parturition Research Group, Institute of Reproductive and Developmental Biology, Hammersmith Hospital Campus, Du Cane Road, East Acton, London W12 0NN, UK; Academic Department of Obstetrics & Gynaecology, Imperial College School of Medicine, Chelsea and Westminster Hospital, 369 Fulham Road, London SW10 9NH, UK.
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19
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Molecular Basis of Oxytocin Receptor Signalling in the Brain: What We Know and What We Need to Know. Curr Top Behav Neurosci 2017; 35:3-29. [PMID: 28812263 DOI: 10.1007/7854_2017_6] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Oxytocin (OT), a hypothalamic neuropeptide involved in regulating the social behaviour of all vertebrates, has been proposed as a treatment for a number of neuropsychiatric disorders characterised by deficits in the social domain. Over the last few decades, advances focused on understanding the social effects of OT and its role in physiological conditions and brain diseases, but much less has been done to clarify the molecular cascade of events involved in mediating such effects and in particular the cellular and molecular pharmacology of OT and its target receptor (OTR) in neuronal and glial cells.The entity and persistence of OT activity in the brain is closely related to the expression and regulation of the OTR expressed on the cell surface, which transmits the signal intracellularly and permits OT to affect cell function. Understanding the various signalling mechanisms mediating OTR-induced cell responses is crucial to determine the different responses in different cells and brain regions, and the success of OT and OT-derived analogues in the treatment of neurodevelopmental and psychiatric diseases depends on how well we can control such responses. In this review, we will consider the most important aspects of OT/OTR signalling by focusing on the molecular events involved in OT binding and coupling, on the main signalling pathways activated by the OTR in neuronal cells and on intracellular and plasma membrane OTR trafficking, all of which contribute to the quantitative and qualitative features of OT responses in the brain.
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Busnelli M, Kleinau G, Muttenthaler M, Stoev S, Manning M, Bibic L, Howell LA, McCormick PJ, Di Lascio S, Braida D, Sala M, Rovati GE, Bellini T, Chini B. Design and Characterization of Superpotent Bivalent Ligands Targeting Oxytocin Receptor Dimers via a Channel-Like Structure. J Med Chem 2016; 59:7152-66. [PMID: 27420737 DOI: 10.1021/acs.jmedchem.6b00564] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Dimeric/oligomeric states of G-protein coupled receptors have been difficult to target. We report here bivalent ligands consisting of two identical oxytocin-mimetics that induce a three order magnitude boost in G-protein signaling of oxytocin receptors (OTRs) in vitro and a 100- and 40-fold gain in potency in vivo in the social behavior of mice and zebrafish. Through receptor mutagenesis and interference experiments with synthetic peptides mimicking transmembrane helices (TMH), we show that such superpotent behavior follows from the binding of the bivalent ligands to dimeric receptors based on a TMH1-TMH2 interface. Moreover, in this arrangement, only the analogues with a well-defined spacer length (∼25 Å) precisely fit inside a channel-like passage between the two protomers of the dimer. The newly discovered oxytocin bivalent ligands represent a powerful tool for targeting dimeric OTR in neurodevelopmental and psychiatric disorders and, in general, provide a framework to untangle specific arrangements of G-protein coupled receptor dimers.
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Affiliation(s)
- Marta Busnelli
- CNR, Institute of Neuroscience , Milan, Italy 20129.,Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano , Milan, Italy 20129
| | - Gunnar Kleinau
- Institute of Experimental Pediatric Endocrinology, Charité-Universitätsmedizin Berlin , Berlin, Germany 13353
| | - Markus Muttenthaler
- Institute for Molecular Bioscience, The University of Queensland , Brisbane, Australia 4072
| | - Stoytcho Stoev
- Department of Biochemistry and Cancer Biology, University of Toledo , Toledo, Ohio 43614, United States
| | - Maurice Manning
- Department of Biochemistry and Cancer Biology, University of Toledo , Toledo, Ohio 43614, United States
| | - Lucka Bibic
- School of Pharmacy, University of East Anglia , Norwich Research Park, Norwich, U.K. NR4 7TJ
| | - Lesley A Howell
- School of Pharmacy, University of East Anglia , Norwich Research Park, Norwich, U.K. NR4 7TJ
| | - Peter J McCormick
- School of Pharmacy, University of East Anglia , Norwich Research Park, Norwich, U.K. NR4 7TJ
| | - Simona Di Lascio
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano , Milan, Italy 20129
| | - Daniela Braida
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano , Milan, Italy 20129
| | - Mariaelvina Sala
- CNR, Institute of Neuroscience , Milan, Italy 20129.,Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano , Milan, Italy 20129
| | - G Enrico Rovati
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano , Milan, Italy 20133
| | - Tommaso Bellini
- Department of Medical Biotechnology and Translational Medicine, Università degli Studi di Milano , Milan, Italy 20129
| | - Bice Chini
- CNR, Institute of Neuroscience , Milan, Italy 20129
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21
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Kleinau G, Müller A, Biebermann H. Oligomerization of GPCRs involved in endocrine regulation. J Mol Endocrinol 2016; 57:R59-80. [PMID: 27151573 DOI: 10.1530/jme-16-0049] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 05/04/2016] [Indexed: 12/27/2022]
Abstract
More than 800 different human membrane-spanning G-protein-coupled receptors (GPCRs) serve as signal transducers at biological barriers. These receptors are activated by a wide variety of ligands such as peptides, ions and hormones, and are able to activate a diverse set of intracellular signaling pathways. GPCRs are of central importance in endocrine regulation, which underpins the significance of comprehensively studying these receptors and interrelated systems. During the last decade, the capacity for multimerization of GPCRs was found to be a common and functionally relevant property. The interaction between GPCR monomers results in higher order complexes such as homomers (identical receptor subtype) or heteromers (different receptor subtypes), which may be present in a specific and dynamic monomer/oligomer equilibrium. It is widely accepted that the oligomerization of GPCRs is a mechanism for determining the fine-tuning and expansion of cellular processes by modification of ligand action, expression levels, and related signaling outcome. Accordingly, oligomerization provides exciting opportunities to optimize pharmacological treatment with respect to receptor target and tissue selectivity or for the development of diagnostic tools. On the other hand, GPCR heteromerization may be a potential reason for the undesired side effects of pharmacological interventions, faced with numerous and common mutual signaling modifications in heteromeric constellations. Finally, detailed deciphering of the physiological occurrence and relevance of specific GPCR/GPCR-ligand interactions poses a future challenge. This review will tackle the aspects of GPCR oligomerization with specific emphasis on family A GPCRs involved in endocrine regulation, whereby only a subset of these receptors will be discussed in detail.
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Affiliation(s)
- Gunnar Kleinau
- Institute of Experimental Pediatric Endocrinology (IEPE)Charité-Universitätsmedizin, Berlin, Germany
| | - Anne Müller
- Institute of Experimental Pediatric Endocrinology (IEPE)Charité-Universitätsmedizin, Berlin, Germany
| | - Heike Biebermann
- Institute of Experimental Pediatric Endocrinology (IEPE)Charité-Universitätsmedizin, Berlin, Germany
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22
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Kimmel M, Clive M, Gispen F, Guintivano J, Brown T, Cox O, Beckmann MW, Kornhuber J, Fasching PA, Osborne LM, Binder E, Payne JL, Kaminsky Z. Oxytocin receptor DNA methylation in postpartum depression. Psychoneuroendocrinology 2016; 69:150-60. [PMID: 27108164 PMCID: PMC7152506 DOI: 10.1016/j.psyneuen.2016.04.008] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 04/07/2016] [Accepted: 04/07/2016] [Indexed: 02/07/2023]
Abstract
The oxytocin receptor (OXTR) is a key regulator of stress and anxiety and may be regulated by both psychosocial risk factors and gonadal hormones, making it an attractive candidate for study in postpartum depression (PPD). The objective of this study was to investigate both serum hormone and PPD specific DNA methylation variation in the OXTR. Illumina HM450 microarray data generated in a prospective PPD cohort identified significant associations (P=0.014) with PPD in an intronic region in the OXTR located 4bp proximal to an estrogen receptor (ER) binding region. Pyrosequencing confirmed moderate evidence for an interaction of CpGs in the region with childhood abuse status to mediate PPD. These CpGs located on chr3 at positions 8810078 and 8810069 exhibited significant associations with postpartum depression scores from an independent cohort of 240 women with no prior psychiatric history. Hormone analysis suggested a PPD specific negative correlation of DNA methylation in the region with serum estradiol levels. Estradiol levels and OXTR DNA methylation exhibited a significant interaction to associate with the ratio of allopregnanolone to progesterone. Cumulatively, the data corroborate our previous hypotheses of a PPD specific increased sensitivity of epigenetic reprogramming at estrogen target genes and suggests that OXTR epigenetic variation may be an important mediator of mood relevant neuroactive steroid production.
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Affiliation(s)
- Mary Kimmel
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA,Department of Psychiatry, University of North Carolina-Chapel Hill, Chapel Hill, NC 27599, USA
| | - Makena Clive
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Fiona Gispen
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Jerry Guintivano
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Tori Brown
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Olivia Cox
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Matthias W. Beckmann
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Johannes Kornhuber
- Department of Psychiatry, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Peter A. Fasching
- Department of Gynecology and Obstetrics, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, 91054 Erlangen, Germany
| | - Lauren M. Osborne
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Elisabeth Binder
- Department of Translational Research in Psychiatry, Max-Planck Institute of Psychiatry, 80804 Munich, Germany
| | - Jennifer L. Payne
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Zachary Kaminsky
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21287, USA.
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Dual allosteric modulation of opioid antinociceptive potency by α2A-adrenoceptors. Neuropharmacology 2015; 99:285-300. [PMID: 26254859 DOI: 10.1016/j.neuropharm.2015.08.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Revised: 07/09/2015] [Accepted: 08/04/2015] [Indexed: 12/31/2022]
Abstract
Opioid and α2-adrenoceptor (AR) agonists are analgesic when administered in the spinal cord and show a clinically beneficial synergistic interaction when co-administered. However, α2-AR antagonists can also inhibit opioid antinociception, suggesting a complex interaction between the two systems. The α2A-AR subtype is necessary for spinal adrenergic analgesia and synergy with opioids for most agonist combinations. Therefore, we investigated whether spinal opioid antinociception and opioid-adrenergic synergy were under allosteric control of the α2A-AR. Drugs were administered intrathecally in wild type (WT) and α2A-knock-out (KO) mice and antinociception was measured using the hot water tail immersion or substance P behavioral assays. The α2A-AR agonist clonidine was less effective in α2A-KO mice in both assays. The absence of the α2A-AR resulted in 10-70-fold increases in the antinociceptive potency of the opioid agonists morphine and DeltII. In contrast, neither morphine nor DeltII synergized with clonidine in α2A-KO mice, indicating that the α2AAR has both positive and negative modulatory effects on opioid antinociception. Depletion of descending adrenergic terminals with 6-OHDA resulted in a significant decrease in morphine efficacy in WT but not in α2A-KO mice, suggesting that endogenous norepinephrine acts through the α2A-AR to facilitate morphine antinociception. Based on these findings, we propose a model whereby ligand-occupied versus ligand-free α2A-AR produce distinct patterns of modulation of opioid receptor activation. In this model, agonist-occupied α2A-ARs potentiate opioid analgesia, while non-occupied α2A-ARs inhibit opioid analgesia. Exploiting such interactions between the two receptors could lead to the development of better pharmacological treatments for pain management.
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Khan SM, Min A, Gora S, Houranieh GM, Campden R, Robitaille M, Trieu P, Pétrin D, Jacobi AM, Behlke MA, Angers S, Hébert TE. Gβ 4 γ 1 as a modulator of M3 muscarinic receptor signalling and novel roles of Gβ 1 subunits in the modulation of cellular signalling. Cell Signal 2015; 27:1597-608. [DOI: 10.1016/j.cellsig.2015.04.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 04/16/2015] [Accepted: 04/17/2015] [Indexed: 01/01/2023]
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25
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Goupil E, Fillion D, Clément S, Luo X, Devost D, Sleno R, Pétrin D, Saragovi HU, Thorin É, Laporte SA, Hébert TE. Angiotensin II type I and prostaglandin F2α receptors cooperatively modulate signaling in vascular smooth muscle cells. J Biol Chem 2014; 290:3137-48. [PMID: 25512374 DOI: 10.1074/jbc.m114.631119] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The angiotensin II type I (AT1R) and the prostaglandin F2α (PGF2α) F prostanoid (FP) receptors are both potent regulators of blood pressure. Physiological interplay between AT1R and FP has been described. Abdominal aortic ring contraction experiments revealed that PGF2α-dependent activation of FP potentiated angiotensin II-induced contraction, whereas FP antagonists had the opposite effect. Similarly, PGF2α-mediated vasoconstriction was symmetrically regulated by co-treatment with AT1R agonist and antagonist. The underlying canonical Gαq signaling via production of inositol phosphates mediated by each receptor was also regulated by antagonists for the other receptor. However, binding to their respective agonists, regulation of receptor-mediated MAPK activation and vascular smooth muscle cell growth were differentially or asymmetrically regulated depending on how each of the two receptors were occupied by either agonist or antagonist. Physical interactions between these receptors have never been reported, and here we show that AT1R and FP form heterodimeric complexes in both HEK 293 and vascular smooth muscle cells. These findings imply that formation of the AT1R/FP dimer creates a novel allosteric signaling unit that shows symmetrical and asymmetrical signaling behavior, depending on the outcome measured. AT1R/FP dimers may thus be important in the regulation of blood pressure.
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Affiliation(s)
- Eugénie Goupil
- From the Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6
| | - Dany Fillion
- From the Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6
| | - Stéphanie Clément
- From the Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6
| | - Xiaoyan Luo
- the Centre de Recherche, Institut de Cardiologie de Montréal, Montréal, Québec H1T 1C8, Canada
| | - Dominic Devost
- From the Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6
| | - Rory Sleno
- From the Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6
| | - Darlaine Pétrin
- From the Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6
| | - H Uri Saragovi
- From the Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6, the Lady Davis Institute, Montréal Jewish General Hospital, Montréal, Québec H3T 1E2, and
| | - Éric Thorin
- the Centre de Recherche, Institut de Cardiologie de Montréal, Montréal, Québec H1T 1C8, Canada
| | - Stéphane A Laporte
- From the Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6, the Department of Medicine, McGill University Health Center Research Institute, Montréal, Québec H3A 2B2, the Department of Anatomy and Cell Biology, McGill University, Montréal, Québec H3A 0CT,
| | - Terence E Hébert
- From the Department of Pharmacology and Therapeutics, McGill University, Montréal, Québec H3G 1Y6,
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Demonstration of a direct interaction between β2-adrenergic receptor and insulin receptor by BRET and bioinformatics. PLoS One 2014; 9:e112664. [PMID: 25401701 PMCID: PMC4234468 DOI: 10.1371/journal.pone.0112664] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2014] [Accepted: 10/06/2014] [Indexed: 12/23/2022] Open
Abstract
Glucose metabolism is under the cooperative regulation of both insulin receptor (IR) and β2-adrenergic receptor (β2AR), which represent the receptor tyrosine kinases (RTKs) and seven transmembrane receptors (7TMRs), respectively. Studies demonstrating cross-talk between these two receptors and their endogenous coexpression have suggested their possible interactions. To evaluate the effect of IR and prospective heteromerization on β2AR properties, we showed that IR coexpression had no effect on the ligand binding properties of β2AR; however, IR reduced β2AR surface expression and accelerated its internalization. Additionally, both receptors displayed a similar distribution pattern with a high degree of colocalization. To test the possible direct interaction between β2AR and IR, we employed quantitative BRET2 saturation and competition assays. Saturation assay data suggested constitutive β2AR and IR homo- and heteromerization. Calculated acceptor/donor (AD50) values as a measure of the relative affinity for homo- and heteromer formation differed among the heteromers that could not be explained by a simple dimer model. In heterologous competition assays, a transient increase in the BRET2 signal with a subsequent hyperbolical decrease was observed, suggesting higher-order heteromer formation. To complement the BRET2 data, we employed the informational spectrum method (ISM), a virtual spectroscopy method to investigate protein-protein interactions. Computational peptide scanning of β2AR and IR identified intracellular domains encompassing residues at the end of the 7th TM domain and C-terminal tail of β2AR and a cytoplasmic part of the IR β chain as prospective interaction domains. ISM further suggested a high probability of heteromer formation and homodimers as basic units engaged in heteromerization. In summary, our data suggest direct interaction and higher-order β2AR:IR oligomer formation, likely comprising heteromers of homodimers.
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The β-adrenergic system as a possible new target for pharmacologic treatment of neovascular retinal diseases. Prog Retin Eye Res 2014; 42:103-29. [DOI: 10.1016/j.preteyeres.2014.06.001] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/30/2014] [Accepted: 06/05/2014] [Indexed: 12/31/2022]
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Wnorowski A, Jozwiak K. Homo- and hetero-oligomerization of β2-adrenergic receptor in receptor trafficking, signaling pathways and receptor pharmacology. Cell Signal 2014; 26:2259-65. [PMID: 25049076 DOI: 10.1016/j.cellsig.2014.06.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 06/27/2014] [Indexed: 10/25/2022]
Abstract
The β2-adrenergic receptor (β2AR) is the prototypic member of G protein-coupled receptors (GPCRs) involved in the production of physiological responses to adrenaline and noradrenaline. Research done in the past few years vastly demonstrated that β2AR can form homo- and hetero-oligomers. Despite the fact that currently this phenomenon is widely accepted, the spread and relevance of β2AR oligomerization are still a matter of debate. This review considers the progress achieved in the field of β2AR oligomerization with focus on the implications of the receptor-receptor interactions to β2AR trafficking, pharmacology and downstream signal transduction pathways.
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Affiliation(s)
- Artur Wnorowski
- Laboratory of Medicinal Chemistry and Neuroengineering, Department of Chemistry, Medical University of Lublin, 20-093 Lublin, Poland.
| | - Krzysztof Jozwiak
- Laboratory of Medicinal Chemistry and Neuroengineering, Department of Chemistry, Medical University of Lublin, 20-093 Lublin, Poland.
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Hiller C, Kühhorn J, Gmeiner P. Class A G-Protein-Coupled Receptor (GPCR) Dimers and Bivalent Ligands. J Med Chem 2013; 56:6542-59. [DOI: 10.1021/jm4004335] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christine Hiller
- Department of Chemistry and Pharmacy,
Emil Fischer
Center, Friedrich Alexander University,
Schuhstraße 19, 91052 Erlangen, Germany
| | - Julia Kühhorn
- Department of Chemistry and Pharmacy,
Emil Fischer
Center, Friedrich Alexander University,
Schuhstraße 19, 91052 Erlangen, Germany
| | - Peter Gmeiner
- Department of Chemistry and Pharmacy,
Emil Fischer
Center, Friedrich Alexander University,
Schuhstraße 19, 91052 Erlangen, Germany
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Poursharifi P, Lapointe M, Pétrin D, Devost D, Gauvreau D, Hébert TE, Cianflone K. C5L2 and C5aR interaction in adipocytes and macrophages: insights into adipoimmunology. Cell Signal 2012; 25:910-8. [PMID: 23268185 DOI: 10.1016/j.cellsig.2012.12.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Revised: 11/29/2012] [Accepted: 12/12/2012] [Indexed: 11/18/2022]
Abstract
Obesity is associated with inflammation characterized by increased infiltration of macrophages into adipose tissue. C5aR-like receptor 2 (C5L2) has been identified as a receptor for acylation-stimulating protein (ASP) and the inflammatory factor C5a, which also binds C5aR. The present study examines the effects of ligands ASP and C5a on interactions between the receptors C5L2 and C5aR in 3T3-L1 adipocytes and J774 macrophages. BRET experiments indicate that C5L2 and C5aR form homo- and heterodimers in transfected HEK 293 cells, which were stable in the presence of ligand. Cell surface receptor levels of C5L2 and C5aR increased during 3T3-L1 adipocyte differentiation; both receptors are also highly expressed in J774 macrophages. Using confocal microscopy to evaluate endogenous receptors in adipocytes following stimulation with ASP or C5a, C5L2 is internalized with increasing perinuclear colocalization with C5aR. There is little C5a-dependent colocalization in macrophages. While adipocyte-conditioned medium (ACM) increased C5L2-C5aR colocalization in macrophages, this was blocked by C5a. ASP stimulation increased Akt (Ser(473)) phosphorylation in both cell types; C5a induced slight Akt phosphorylation in adipocytes with less effect in macrophages. ASP, but not C5a, increased fatty acid uptake/esterification in adipocytes. C5L2-C5aR homodimerization versus heterodimerization may thus contribute to differential responses obtained following ASP vs C5a stimulation of adipocytes and macrophages, providing new insights into the complex interaction between these two cell types within adipose tissue. Studying the mechanisms involved in the differential responses of C5L2-C5aR activation based on cell type will further our understanding of inflammatory processes in obesity.
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Affiliation(s)
- Pegah Poursharifi
- Centre de Recherche de Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Québec, QC, Canada
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Paul RK, Ramamoorthy A, Scheers J, Wersto RP, Toll L, Jimenez L, Bernier M, Wainer IW. Cannabinoid receptor activation correlates with the proapoptotic action of the β2-adrenergic agonist (R,R')-4-methoxy-1-naphthylfenoterol in HepG2 hepatocarcinoma cells. J Pharmacol Exp Ther 2012; 343:157-66. [PMID: 22776956 DOI: 10.1124/jpet.112.195206] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Inhibition of cell proliferation by fenoterol and fenoterol derivatives in 1321N1 astrocytoma cells is consistent with β(2)-adrenergic receptor (β(2)-AR) stimulation. However, the events that result in fenoterol-mediated control of cell proliferation in other cell types are not clear. Here, we compare the effect of the β(2)-AR agonists (R,R')-fenoterol (Fen) and (R,R')-4-methoxy-1-naphthylfenoterol (MNF) on signaling and cell proliferation in HepG2 hepatocarcinoma cells by using Western blotting and [(3)H]thymidine incorporation assays. Despite the expression of β(2)-AR, no cAMP accumulation was observed when cells were stimulated with isoproterenol or Fen, although the treatment elicited both mitogen-activated protein kinase and phosphatidylinositol 3-kinase/Akt activation. Unexpectedly, isoproterenol and Fen promoted HepG2 cell growth, but MNF reduced proliferation together with increased apoptosis. The mitogenic responses of Fen were attenuated by 3-(isopropylamino)-1-[(7-methyl-4-indanyl)oxy]butan-2-ol (ICI 118,551), a β(2)-AR antagonist, whereas those of MNF were unaffected. Because of the coexpression of β(2)-AR and cannabinoid receptors (CBRs) and their impact on HepG2 cell proliferation, these Gα(i)/Gα(o)-linked receptors may be implicated in MNF signaling. Cell treatment with (R)-(+)-[2,3-dihydro-5-methyl-3-(4-morpholinylmethyl)pyrrolo[1,2,3-de]-1,4-benzoxazin-6-yl]-1-napthalenylmethanone (WIN 55,212-2), a synthetic agonist of CB(1)R and CB(2)R, led to growth inhibition, whereas inverse agonists of these receptors blocked MNF mitogenic responses without affecting Fen signaling. MNF responses were sensitive to pertussis toxin. The β(2)-AR-deficient U87MG cells were refractory to Fen, but responsive to the antiproliferative actions of MNF and WIN 55,212-2. The data indicate that the presence of the naphthyl moiety in MNF results in functional coupling to the CBR pathway, providing one of the first examples of a dually acting β(2)-AR-CBR ligand.
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Affiliation(s)
- Rajib K Paul
- Laboratory of Clinical Investigation, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224-6825, USA
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Abstract
In almost 16 years since the word "dimer" was used in a publication to describe the organization of G protein-coupled receptors (GPCRs), a large number of studies have since weighed in on this notion. Are native, functional GPCRs monomers, dimers or as some would suggest even higher order structures? Here, we review some of the latest evidence regarding the organization of these receptors in both homo- and hetero-oligomeric formats, with a particular focus on β-adrenergic receptors. This is particularly important for understanding the allosteric nature of receptor/receptor interactions. It is likely that, over the course of evolution, mechanisms have come into play using all of the possible variations in receptor/receptor stoichiometry, depending on the cell and the physiological context in question. Finally, we provide some data that suggests that higher order structures of GPCRs, as with dimers themselves are probably assembled in the ER.
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