1
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Manolis D, Hasan S, Maraveyas A, O'Brien DP, Kessler BM, Kramer H, Nikitenko LL. Quantitative proteomics reveals CLR interactome in primary human cells. J Biol Chem 2024; 300:107399. [PMID: 38777147 PMCID: PMC11231609 DOI: 10.1016/j.jbc.2024.107399] [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: 11/30/2023] [Revised: 05/03/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024] Open
Abstract
The G protein-coupled receptor (GPCR) calcitonin receptor-like receptor (CLR) mediates essential functions in several cell types and is implicated in cardiovascular pathologies, skin diseases, migraine, and cancer. To date, the network of proteins interacting with CLR ("CLR interactome") in primary cells, where this GPCR is expressed at endogenous (physiologically relevant) levels, remains unknown. To address this knowledge gap, we established a novel integrative methodological workflow/approach for conducting a comprehensive/proteome-wide analysis of Homo sapiens CLR interactome. We used primary human dermal lymphatic endothelial cells and combined immunoprecipitation utilizing anti-human CLR antibody with label-free quantitative nano LC-MS/MS and quantitative in situ proximity ligation assay. By using this workflow, we identified 37 proteins interacting with endogenously expressed CLR amongst 4902 detected members of the cellular proteome (by quantitative nano LC-MS/MS) and revealed direct interactions of two kinases and two transporters with this GPCR (by in situ proximity ligation assay). All identified interactors have not been previously reported as members of CLR interactome. Our approach and findings uncover the hitherto unrecognized compositional complexity of the interactome of endogenously expressed CLR and contribute to fundamental understanding of the biology of this GPCR. Collectively, our study provides a first-of-its-kind integrative methodological approach and datasets as valuable resources and robust platform/springboard for advancing the discovery and comprehensive characterization of physiologically relevant CLR interactome at a proteome-wide level in a range of cell types and diseases in future studies.
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Affiliation(s)
- Dimitrios Manolis
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK
| | - Shirin Hasan
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK
| | - Anthony Maraveyas
- Queens Centre for Oncology and Haematology, Castle Hill Hospital, Hull University Teaching Hospitals NHS Teaching Trust, Hull, UK
| | - Darragh P O'Brien
- Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Benedikt M Kessler
- Target Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Holger Kramer
- Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Leonid L Nikitenko
- Centre for Biomedicine, Hull York Medical School, University of Hull, Hull, UK.
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2
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Daulat AM, Audebert S, Wagner M, Camoin L, Borg JP. Identification of PDZ Interactions by Affinity Purification and Mass Spectrometry Analysis. Methods Mol Biol 2021; 2256:17-40. [PMID: 34014514 DOI: 10.1007/978-1-0716-1166-1_2] [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: 06/12/2023]
Abstract
Identification of protein networks becomes indispensable for determining the function of a given protein of interest. Some proteins harbor a PDZ binding motif (PDZBM) located at the carboxy-terminus end. This motif is necessary to recruit PDZ domain proteins which are involved in signaling, trafficking, and maintenance of cell architecture. In the present chapter, we present two complementary approaches (immunopurification and peptide-based purification procedures) followed by mass spectrometry analysis to identify PDZ domain proteins associated to a given protein of interest. As proof of example, we focus our attention on TANC1 which is a scaffold protein harboring a PDZBM at its carboxy-terminus. Using these two approaches, we identified several PDZ domain containing proteins. Some of them were found with both approaches, and some were specifically identified using peptide-based purification procedure. This exemplifies advantages and differences of both strategies to identify PDZ interactions.
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Affiliation(s)
- Avais M Daulat
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe labellisée Ligue 'Cell polarity, cell signaling and cancer', Marseille, France
| | - Stéphane Audebert
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille Protéomique, Marseille, France
| | - Mônica Wagner
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille Protéomique, Marseille, France
| | - Luc Camoin
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille Protéomique, Marseille, France
| | - Jean-Paul Borg
- Institut Universitaire de France (IUF), Paris, France.
- Centre de Recherche en Cancérologie de Marseille, Aix-Marseille University, Inserm, CNRS, Institut Paoli-Calmettes, Marseille, France.
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3
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Sharaf A, Mensching L, Keller C, Rading S, Scheffold M, Palkowitsch L, Djogo N, Rezgaoui M, Kestler HA, Moepps B, Failla AV, Karsak M. Systematic Affinity Purification Coupled to Mass Spectrometry Identified p62 as Part of the Cannabinoid Receptor CB2 Interactome. Front Mol Neurosci 2019; 12:224. [PMID: 31616248 PMCID: PMC6763791 DOI: 10.3389/fnmol.2019.00224] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Accepted: 09/03/2019] [Indexed: 01/29/2023] Open
Abstract
The endocannabinoid system (ECS) consists particularly of cannabinoid receptors 1 and 2 (CB1 and CB2), their endogenous ligands, and enzymes that synthesize and degrade their ligands. It acts in a variety of organs and disease states ranging from cancer progression over neuropathic pain to neurodegeneration. Protein components engaged in the signaling, trafficking, and homeostasis machinery of the G-protein coupled CB2, are however largely unknown. It is therefore important to identify further interaction partners to better understand CB2 receptor functions in physiology and pathophysiology. For this purpose, we used an affinity purification and mass spectrometry-based proteomics approach of Strep-HA-CB2 receptor in HEK293 cells. After subtraction of background interactions and protein frequency library assessment we could identify 83 proteins that were classified by the identification of minimally 2 unique peptides as highly probable interactors. A functional protein association network analysis obtained an interaction network with a significant enrichment of proteins functionally involved in protein metabolic process, in endoplasmic reticulum, response to stress but also in lipid metabolism and membrane organization. The network especially contains proteins involved in biosynthesis and trafficking like calnexin, Sec61A, tubulin chains TUBA1C and TUBB2B, TMED2, and TMED10. Six proteins that were only expressed in stable CB2 expressing cells were DHC24, DHRS7, GGT7, HECD3, KIAA2013, and PLS1. To exemplify the validity of our approach, we chose a candidate having a relatively low number of edges in the network to increase the likelihood of a direct protein interaction with CB2 and focused on the scaffold/phagosomal protein p62/SQSTM1. Indeed, we independently confirmed the interaction by co-immunoprecipitation and immunocytochemical colocalization studies. 3D reconstruction of confocal images furthermore showed CB2 localization in close proximity to p62 positive vesicles at the cell membrane. In summary, we provide a comprehensive repository of the CB2 interactome in HEK293 cells identified by a systematic unbiased approach, which can be used in future experiments to decipher the signaling and trafficking complex of this cannabinoid receptor. Future studies will have to analyze the exact mechanism of the p62-CB2 interaction as well as its putative role in disease pathophysiology.
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Affiliation(s)
- Ahmed Sharaf
- Neuronal and Cellular Signal Transduction, Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Leonore Mensching
- Neuronal and Cellular Signal Transduction, Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christina Keller
- Neuronal and Cellular Signal Transduction, Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sebastian Rading
- Neuronal and Cellular Signal Transduction, Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Marina Scheffold
- Neuronal and Cellular Signal Transduction, Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Institute of Pharmacology and Toxicology, Ulm University, Ulm, Germany
| | | | - Nevena Djogo
- Neuronal and Cellular Signal Transduction, Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Meriem Rezgaoui
- Institute for Biochemistry and Molecular Biology, University of Hamburg, Hamburg, Germany
| | - Hans A Kestler
- Institute of Medical Systems Biology, Ulm University, Ulm, Germany
| | - Barbara Moepps
- Institute of Pharmacology and Toxicology, Ulm University, Ulm, Germany
| | | | - Meliha Karsak
- Neuronal and Cellular Signal Transduction, Center for Molecular Neurobiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Wang J, Wang Y, Liu J, Li Q, Yin G, Zhang Y, Xiao C, Fan T, Zhao X, Zheng X. Site-Specific Immobilization of β 2-AR Using O 6-Benzylguanine Derivative-Functionalized Supporter for High-Throughput Receptor-Targeting Lead Discovery. Anal Chem 2019; 91:7385-7393. [PMID: 31070886 DOI: 10.1021/acs.analchem.9b01268] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The past decade has witnessed the great promise of strategies for ligand discovery based on surface-immobilized GPCRs. We present here a method for preparation of immobilized GPCRs. Key features include covalent immobilization with high specificity and robust application in drug-receptor interaction analysis and ligand screening. In our example assay using beta2-adrenergic receptor (β2-AR), the human DNA repair protein O6-alkylguanine-DNA alkyltransferase (hAGT) fusion receptor expressed in Escherichia coli was directly captured onto polyethylene glycol polyacrylamide (PEGA) resin. We observed even distribution and physiological functions of β2-AR on the resin. The immobilized β2-AR as a stationary phase enabled us to rapidly determine the binding of four drugs to β2-AR. By coupling this assay to mass spectrometry, we screened rosmarinic acid as a bioactive compound targeting β2-AR in Fructus Perillae. We concluded that O6-benzylguanine derivative-functionalized supporter is promising for specific immobilization of hAGT-tagged proteins; immobilized receptor chromatography has great potential in screening receptor-binding leads from herbal plants or traditional medicine recipes.
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Affiliation(s)
- Jing Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
| | - Yuxin Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
| | - Jiajun Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
| | - Qian Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
| | - Guowei Yin
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
- College of Physicians and Surgeons , Columbia University , New York , NY 10032 , United States
| | - Yajun Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
| | - Chaoni Xiao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
| | - Taiping Fan
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
- Department of Pharmacology , University of Cambridge , Cambridge CB2 1PD , United Kingdom
| | - Xinfeng Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
| | - Xiaohui Zheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences , Northwest University , Xi'an , Shaanxi 710069 , China
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5
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Cecon E, Dam J, Luka M, Gautier C, Chollet AM, Delagrange P, Danober L, Jockers R. Quantitative assessment of oligomeric amyloid β peptide binding to α7 nicotinic receptor. Br J Pharmacol 2019; 176:3475-3488. [PMID: 30981214 DOI: 10.1111/bph.14688] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 03/14/2019] [Accepted: 03/19/2019] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND AND PURPOSE Progressive dysfunction of cholinergic transmission is a well-known characteristic of Alzheimer's disease (AD). Amyloid β (Aβ) peptide oligomers are known to play a central role in AD and are suggested to impair the function of the cholinergic nicotinic ACh receptor α7 (α7nAChR). However, the mechanism underlying the effect of Aβ on α7nAChR function is not fully understood, limiting the therapeutic exploration of this observation in AD. Here, we aimed to detect and characterize Aβ binding to α7nAChR, including the possibility of interfering with this interaction for therapeutic purposes. EXPERIMENTAL APPROACH We developed a specific and quantitative time-resolved FRET (TR-FRET)-based binding assay for Aβ to α7nAChR and pharmacologically characterized this interaction. KEY RESULTS We demonstrated specific and high-affinity (low nanomolar) binding of Aβ to the orthosteric binding site of α7nAChR. Aβ binding was prevented and reversed by the well-characterized orthosteric ligands of α7nAChR (epibatidine, α-bungarotoxin, methylylcaconitine, PNU-282987, S24795, and EVP6124) and by the type II positive allosteric modulator (PAM) PNU-120596 but not by the type I PAM NS1738. CONCLUSIONS AND IMPLICATIONS Our TR-FRET Aβ binding assay demonstrates for the first time the specific binding of Aβ to α7nAChR, which will be a crucial tool for the development, testing, and selection of a novel generation of AD drug candidates targeting Aβ/α7nAChR complexes with high specificity and fewer side effects compared to currently approved α7nAChR drugs. LINKED ARTICLES This article is part of a themed section on Therapeutics for Dementia and Alzheimer's Disease: New Directions for Precision Medicine. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.18/issuetoc.
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Affiliation(s)
- Erika Cecon
- Inserm U1016, Institut Cochin, Dept Endocrinology, Metabolism and Diabetes, Paris, France.,CNRS UMR 8104, Paris, France.,University Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Julie Dam
- Inserm U1016, Institut Cochin, Dept Endocrinology, Metabolism and Diabetes, Paris, France.,CNRS UMR 8104, Paris, France.,University Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Marine Luka
- Inserm U1016, Institut Cochin, Dept Endocrinology, Metabolism and Diabetes, Paris, France.,CNRS UMR 8104, Paris, France.,University Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Clément Gautier
- Institut de Recherches SERVIER, Division Therapeutic Innovation in Neuropsychiatry, Croissy-sur-Seine, France
| | - Anne-Marie Chollet
- Institut de Recherches SERVIER, Division Therapeutic Innovation in Neuropsychiatry, Croissy-sur-Seine, France
| | - Philippe Delagrange
- Institut de Recherches SERVIER, Division Therapeutic Innovation in Neuropsychiatry, Croissy-sur-Seine, France
| | - Laurence Danober
- Institut de Recherches SERVIER, Division Therapeutic Innovation in Neuropsychiatry, Croissy-sur-Seine, France
| | - Ralf Jockers
- Inserm U1016, Institut Cochin, Dept Endocrinology, Metabolism and Diabetes, Paris, France.,CNRS UMR 8104, Paris, France.,University Paris Descartes, Sorbonne Paris Cité, Paris, France
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6
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Li Q, Ning X, An Y, Stanley BJ, Liang Y, Wang J, Zeng K, Fei F, Liu T, Sun H, Liu J, Zhao X, Zheng X. Reliable Analysis of the Interaction between Specific Ligands and Immobilized Beta-2-Adrenoceptor by Adsorption Energy Distribution. Anal Chem 2018; 90:7903-7911. [DOI: 10.1021/acs.analchem.8b00214] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qian Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Xiaohui Ning
- Institute of Analytical Science, Northwest University, Xi’an, Shaanxi 710069, China
| | - Yuxin An
- National Chromatographic R. & A. Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Brett J. Stanley
- Department of Chemistry & Biochemistry, California State University, San Bernardino, California 92407-2397, United States
| | - Yuan Liang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Jing Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Kaizhu Zeng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Fuhuan Fei
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Ting Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Huanmei Sun
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Jiajun Liu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Xinfeng Zhao
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
| | - Xiaohui Zheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi’an, Shaanxi 710069, China
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7
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Lo Sardo F, Muti P, Blandino G, Strano S. Melatonin and Hippo Pathway: Is There Existing Cross-Talk? Int J Mol Sci 2017; 18:ijms18091913. [PMID: 28878191 PMCID: PMC5618562 DOI: 10.3390/ijms18091913] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 08/30/2017] [Accepted: 09/01/2017] [Indexed: 12/16/2022] Open
Abstract
Melatonin is an indolic hormone that regulates a plethora of functions ranging from the regulation of circadian rhythms and antioxidant properties to the induction and maintenance of tumor suppressor pathways. It binds to specific receptors as well as to some cytosolic proteins, leading to several cellular signaling cascades. Recently, the involvement of melatonin in cancer insurgence and progression has clearly been demonstrated. In this review, we will first describe the structure and functions of melatonin and its receptors, and then discuss both molecular and epidemiological evidence on melatonin anticancer effects. Finally, we will shed light on potential cross-talk between melatonin signaling and the Hippo signaling pathway, along with the possible implications for cancer therapy.
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Affiliation(s)
- Federica Lo Sardo
- Oncogenomic and Epigenetic Unit, Molecular Chemoprevention Group, Department of Research, Diagnosis and Innovative Technologies, Translational Research Area, Regina Elena National Cancer Institute, via Elio Chianesi 53, 00144 Rome, Italy.
| | - Paola Muti
- Department of Oncology, Juravinski Cancer Center, McMaster University, Hamilton, ON L8S 4L8, Canada.
| | - Giovanni Blandino
- Oncogenomic and Epigenetic Unit, Molecular Chemoprevention Group, Department of Research, Diagnosis and Innovative Technologies, Translational Research Area, Regina Elena National Cancer Institute, via Elio Chianesi 53, 00144 Rome, Italy.
| | - Sabrina Strano
- Oncogenomic and Epigenetic Unit, Molecular Chemoprevention Group, Department of Research, Diagnosis and Innovative Technologies, Translational Research Area, Regina Elena National Cancer Institute, via Elio Chianesi 53, 00144 Rome, Italy.
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8
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Ekhteiari Salmas R, Serhat Is Y, Durdagi S, Stein M, Yurtsever M. A QM protein–ligand investigation of antipsychotic drugs with the dopamine D2 Receptor (D2R). J Biomol Struct Dyn 2017; 36:2668-2677. [DOI: 10.1080/07391102.2017.1365772] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
| | - Yusuf Serhat Is
- Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
- Vocational School Department of Chemistry Technology, Istanbul Gedik University, Istanbul, Turkey
| | - Serdar Durdagi
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, Istanbul, Turkey
| | - Matthias Stein
- Molecular Simulations and Design Group, Max-Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany
| | - Mine Yurtsever
- Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
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9
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Sokolina K, Kittanakom S, Snider J, Kotlyar M, Maurice P, Gandía J, Benleulmi-Chaachoua A, Tadagaki K, Oishi A, Wong V, Malty RH, Deineko V, Aoki H, Amin S, Yao Z, Morató X, Otasek D, Kobayashi H, Menendez J, Auerbach D, Angers S, Pržulj N, Bouvier M, Babu M, Ciruela F, Jockers R, Jurisica I, Stagljar I. Systematic protein-protein interaction mapping for clinically relevant human GPCRs. Mol Syst Biol 2017; 13:918. [PMID: 28298427 PMCID: PMC5371730 DOI: 10.15252/msb.20167430] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
G‐protein‐coupled receptors (GPCRs) are the largest family of integral membrane receptors with key roles in regulating signaling pathways targeted by therapeutics, but are difficult to study using existing proteomics technologies due to their complex biochemical features. To obtain a global view of GPCR‐mediated signaling and to identify novel components of their pathways, we used a modified membrane yeast two‐hybrid (MYTH) approach and identified interacting partners for 48 selected full‐length human ligand‐unoccupied GPCRs in their native membrane environment. The resulting GPCR interactome connects 686 proteins by 987 unique interactions, including 299 membrane proteins involved in a diverse range of cellular functions. To demonstrate the biological relevance of the GPCR interactome, we validated novel interactions of the GPR37, serotonin 5‐HT4d, and adenosine ADORA2A receptors. Our data represent the first large‐scale interactome mapping for human GPCRs and provide a valuable resource for the analysis of signaling pathways involving this druggable family of integral membrane proteins.
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Affiliation(s)
- Kate Sokolina
- Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | | | - Jamie Snider
- Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Max Kotlyar
- Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Pascal Maurice
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR 8104, Paris, France.,Sorbonne Paris Cité, University of Paris Descartes, Paris, France.,UMR CNRS 7369 Matrice Extracellulaire et Dynamique Cellulaire (MEDyC), Université de Reims Champagne Ardenne (URCA), UFR Sciences Exactes et Naturelles, Reims, France
| | - Jorge Gandía
- Unitat de Farmacologia, Departament de Patologia i Terapèutica Experimental, Facultat de Medicina, IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Abla Benleulmi-Chaachoua
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR 8104, Paris, France.,Sorbonne Paris Cité, University of Paris Descartes, Paris, France
| | - Kenjiro Tadagaki
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR 8104, Paris, France.,Sorbonne Paris Cité, University of Paris Descartes, Paris, France
| | - Atsuro Oishi
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR 8104, Paris, France.,Sorbonne Paris Cité, University of Paris Descartes, Paris, France
| | - Victoria Wong
- Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Ramy H Malty
- Department of Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Viktor Deineko
- Department of Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Hiroyuki Aoki
- Department of Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Shahreen Amin
- Department of Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Zhong Yao
- Donnelly Centre, University of Toronto, Toronto, ON, Canada
| | - Xavier Morató
- Unitat de Farmacologia, Departament de Patologia i Terapèutica Experimental, Facultat de Medicina, IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - David Otasek
- Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Hiroyuki Kobayashi
- Department of Biochemistry, Institute for Research in Immunology & Cancer, Université de Montréal, Montréal, QC, Canada
| | | | | | - Stephane Angers
- Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy and Department of Biochemistry, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Natasa Pržulj
- Department of Computing, University College London, London, UK
| | - Michel Bouvier
- Department of Biochemistry, Institute for Research in Immunology & Cancer, Université de Montréal, Montréal, QC, Canada
| | - Mohan Babu
- Department of Biochemistry, Research and Innovation Centre, University of Regina, Regina, SK, Canada
| | - Francisco Ciruela
- Unitat de Farmacologia, Departament de Patologia i Terapèutica Experimental, Facultat de Medicina, IDIBELL, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain.,Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Ralf Jockers
- Inserm, U1016, Institut Cochin, Paris, France.,CNRS UMR 8104, Paris, France.,Sorbonne Paris Cité, University of Paris Descartes, Paris, France
| | - Igor Jurisica
- Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON, Canada.,Departments of Medical Biophysics and Computer Science, University of Toronto, Toronto, ON, Canada.,Institute of Neuroimmunology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Igor Stagljar
- Donnelly Centre, University of Toronto, Toronto, ON, Canada .,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.,Department of Biochemistry, University of Toronto, Toronto, ON, Canada
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10
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Shirzad-Wasei N, DeGrip WJ. Heterologous expression of melanopsin: Present, problems and prospects. Prog Retin Eye Res 2016; 52:1-21. [DOI: 10.1016/j.preteyeres.2016.02.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 01/25/2016] [Accepted: 02/01/2016] [Indexed: 12/12/2022]
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11
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Benleulmi-Chaachoua A, Chen L, Sokolina K, Wong V, Jurisica I, Emerit MB, Darmon M, Espin A, Stagljar I, Tafelmeyer P, Zamponi GW, Delagrange P, Maurice P, Jockers R. Protein interactome mining defines melatonin MT1 receptors as integral component of presynaptic protein complexes of neurons. J Pineal Res 2016; 60:95-108. [PMID: 26514267 DOI: 10.1111/jpi.12294] [Citation(s) in RCA: 36] [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: 09/21/2015] [Accepted: 10/26/2015] [Indexed: 01/11/2023]
Abstract
In mammals, the hormone melatonin is mainly produced by the pineal gland with nocturnal peak levels. Its peripheral and central actions rely either on its intrinsic antioxidant properties or on binding to melatonin MT1 and MT2 receptors, belonging to the G protein-coupled receptor (GPCR) super-family. Melatonin has been reported to be involved in many functions of the central nervous system such as circadian rhythm regulation, neurotransmission, synaptic plasticity, memory, sleep, and also in Alzheimer's disease and depression. However, little is known about the subcellular localization of melatonin receptors and the molecular aspects involved in neuronal functions of melatonin. Identification of protein complexes associated with GPCRs has been shown to be a valid approach to improve our understanding of their function. By combining proteomic and genomic approaches we built an interactome of MT1 and MT2 receptors, which comprises 378 individual proteins. Among the proteins interacting with MT1 , but not with MT2 , we identified several presynaptic proteins, suggesting a potential role of MT1 in neurotransmission. Presynaptic localization of MT1 receptors in the hypothalamus, striatum, and cortex was confirmed by subcellular fractionation experiments and immunofluorescence microscopy. MT1 physically interacts with the voltage-gated calcium channel Cav 2.2 and inhibits Cav 2.2-promoted Ca(2+) entry in an agonist-independent manner. In conclusion, we show that MT1 is part of the presynaptic protein network and negatively regulates Cav 2.2 activity, providing a first hint for potential synaptic functions of MT1.
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Affiliation(s)
- Abla Benleulmi-Chaachoua
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France
- Sorbonne Paris Cité, Université Paris Descartes, Paris, France
| | - Lina Chen
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | - Kate Sokolina
- Donnelly Centre, Department of Biochemistry, Department of Molecular Genetics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Victoria Wong
- Donnelly Centre, Department of Biochemistry, Department of Molecular Genetics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Igor Jurisica
- Princess Margaret Cancer Centre, University Health Network and TECHNA Institute for the Advancement of Technology for Health, Toronto, ON, Canada
| | - Michel Boris Emerit
- Sorbonne Paris Cité, Université Paris Descartes, Paris, France
- Centre de Psychiatrie et Neurosciences, INSERM U894, Paris, France
| | - Michèle Darmon
- Sorbonne Paris Cité, Université Paris Descartes, Paris, France
- Centre de Psychiatrie et Neurosciences, INSERM U894, Paris, France
| | - Almudena Espin
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France
- Sorbonne Paris Cité, Université Paris Descartes, Paris, France
| | - Igor Stagljar
- Donnelly Centre, Department of Biochemistry, Department of Molecular Genetics, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | | | - Gerald W Zamponi
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
| | | | - Pascal Maurice
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France
- Sorbonne Paris Cité, Université Paris Descartes, Paris, France
| | - Ralf Jockers
- Inserm, U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France
- Sorbonne Paris Cité, Université Paris Descartes, Paris, France
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12
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Beltramo M, Dardente H, Cayla X, Caraty A. Cellular mechanisms and integrative timing of neuroendocrine control of GnRH secretion by kisspeptin. Mol Cell Endocrinol 2014; 382:387-399. [PMID: 24145132 DOI: 10.1016/j.mce.2013.10.015] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Revised: 10/08/2013] [Accepted: 10/11/2013] [Indexed: 01/11/2023]
Abstract
The hypothalamus integrates endogenous and exogenous inputs to control the pituitary-gonadal axis. The ultimate hypothalamic influence on reproductive activity is mediated through timely secretion of GnRH in the portal blood, which modulates the release of gonadotropins from the pituitary. In this context neurons expressing the RF-amide neuropeptide kisspeptin present required features to fulfill the role of the long sought-after hypothalamic integrative centre governing the stimulation of GnRH neurons. Here we focus on the intracellular signaling pathways triggered by kisspeptin through its cognate receptor KISS1R and on the potential role of proteins interacting with this receptor. We then review evidence implicating both kisspeptin and RFRP3--another RF-amide neuropeptide--in the temporal orchestration of both the pre-ovulatory LH surge in female rodents and the organization of seasonal breeding in photoperiodic species.
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Affiliation(s)
- Massimiliano Beltramo
- UMR Physiologie de la Reproduction et des Comportements (INRA, UMR85, CNRS, UMR7247, Université François Rabelais Tours, IFCE), F-37380 Nouzilly, France.
| | - Hugues Dardente
- UMR Physiologie de la Reproduction et des Comportements (INRA, UMR85, CNRS, UMR7247, Université François Rabelais Tours, IFCE), F-37380 Nouzilly, France
| | - Xavier Cayla
- UMR Physiologie de la Reproduction et des Comportements (INRA, UMR85, CNRS, UMR7247, Université François Rabelais Tours, IFCE), F-37380 Nouzilly, France
| | - Alain Caraty
- UMR Physiologie de la Reproduction et des Comportements (INRA, UMR85, CNRS, UMR7247, Université François Rabelais Tours, IFCE), F-37380 Nouzilly, France
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13
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Romero GG. The Role of the Cell Background in Biased Signaling. BIASED SIGNALING IN PHYSIOLOGY, PHARMACOLOGY AND THERAPEUTICS 2014:41-79. [DOI: 10.1016/b978-0-12-411460-9.00002-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2025]
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14
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GPCR & Company: Databases and Servers for GPCRs and Interacting Partners. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 796:185-204. [DOI: 10.1007/978-94-007-7423-0_9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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15
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Michel G, Matthes HWD, Hachet-Haas M, El Baghdadi K, de Mey J, Pepperkok R, Simpson JC, Galzi JL, Lecat S. Plasma membrane translocation of REDD1 governed by GPCRs contributes to mTORC1 activation. J Cell Sci 2013; 127:773-87. [PMID: 24338366 DOI: 10.1242/jcs.136432] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The mTORC1 kinase promotes cell growth in response to growth factors by activation of receptor tyrosine kinase. It is regulated by the cellular energy level and the availability of nutrients. mTORC1 activity is also inhibited by cellular stresses through overexpression of REDD1 (regulated in development and DNA damage responses). We report the identification of REDD1 in a fluorescent live-imaging screen aimed at discovering new proteins implicated in G-protein-coupled receptor signaling, based on translocation criteria. Using a sensitive and quantitative plasma membrane localization assay based on bioluminescent resonance energy transfer, we further show that a panel of endogenously expressed GPCRs, through a Ca(2+)/calmodulin pathway, triggers plasma membrane translocation of REDD1 but not of its homolog REDD2. REDD1 and REDD2 share a conserved mTORC1-inhibitory motif characterized at the functional and structural level and differ most in their N-termini. We show that the N-terminus of REDD1 and its mTORC1-inhibitory motif participate in the GPCR-evoked dynamic interaction of REDD1 with the plasma membrane. We further identify REDD1 as a novel effector in GPCR signaling. We show that fast activation of mTORC1 by GPCRs correlates with fast and maximal translocation of REDD1 to the plasma membrane. Overexpression of functional REDD1 leads to a reduction of mTORC1 activation by GPCRs. By contrast, depletion of endogenous REDD1 protein unleashes mTORC1 activity. Thus, translocation to the plasma membrane appears to be an inactivation mechanism of REDD1 by GPCRs, which probably act by sequestering its functional mTORC1-inhibitory motif that is necessary for plasma membrane targeting.
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Affiliation(s)
- Grégory Michel
- GPCRs, Pain and Inflammation Team, UMR7242, CNRS-University of Strasbourg, LabEx Medalis, 67412 Illkirch, France
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16
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Melatonin and pancreatic islets: interrelationships between melatonin, insulin and glucagon. Int J Mol Sci 2013; 14:6981-7015. [PMID: 23535335 PMCID: PMC3645673 DOI: 10.3390/ijms14046981] [Citation(s) in RCA: 115] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 03/07/2013] [Accepted: 03/11/2013] [Indexed: 12/15/2022] Open
Abstract
The pineal hormone melatonin exerts its influence in the periphery through activation of two specific trans-membrane receptors: MT1 and MT2. Both isoforms are expressed in the islet of Langerhans and are involved in the modulation of insulin secretion from β-cells and in glucagon secretion from α-cells. De-synchrony of receptor signaling may lead to the development of type 2 diabetes. This notion has recently been supported by genome-wide association studies identifying particularly the MT2 as a risk factor for this rapidly spreading metabolic disturbance. Since melatonin is secreted in a clearly diurnal fashion, it is safe to assume that it also has a diurnal impact on the blood-glucose-regulating function of the islet. This factor has hitherto been underestimated; the disruption of diurnal signaling within the islet may be one of the most important mechanisms leading to metabolic disturbances. The study of melatonin–insulin interactions in diabetic rat models has revealed an inverse relationship: an increase in melatonin levels leads to a down-regulation of insulin secretion and vice versa. Elucidation of the possible inverse interrelationship in man may open new avenues in the therapy of diabetes.
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17
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Chung KY, Day PW, Vélez-Ruiz G, Sunahara RK, Kobilka BK. Identification of GPCR-interacting cytosolic proteins using HDL particles and mass spectrometry-based proteomic approach. PLoS One 2013; 8:e54942. [PMID: 23372797 PMCID: PMC3556083 DOI: 10.1371/journal.pone.0054942] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 12/18/2012] [Indexed: 11/18/2022] Open
Abstract
G protein-coupled receptors (GPCRs) have critical roles in various physiological and pathophysiological processes, and more than 40% of marketed drugs target GPCRs. Although the canonical downstream target of an agonist-activated GPCR is a G protein heterotrimer; there is a growing body of evidence suggesting that other signaling molecules interact, directly or indirectly, with GPCRs. However, due to the low abundance in the intact cell system and poor solubility of GPCRs, identification of these GPCR-interacting molecules remains challenging. Here, we establish a strategy to overcome these difficulties by using high-density lipoprotein (HDL) particles. We used the β2-adrenergic receptor (β2AR), a GPCR involved in regulating cardiovascular physiology, as a model system. We reconstituted purified β2AR in HDL particles, to mimic the plasma membrane environment, and used the reconstituted receptor as bait to pull-down binding partners from rat heart cytosol. A total of 293 proteins were identified in the full agonist-activated β2AR pull-down, 242 proteins in the inverse agonist-activated β2AR pull-down, and 210 proteins were commonly identified in both pull-downs. A small subset of the β2AR-interacting proteins isolated was confirmed by Western blot; three known β2AR-interacting proteins (Gsα, NHERF-2, and Grb2) and 3 newly identified known β2AR-interacting proteins (AMPKα, acetyl-CoA carboxylase, and UBC-13). Profiling of the identified proteins showed a clear bias toward intracellular signal transduction pathways, which is consistent with the role of β2AR as a cell signaling molecule. This study suggests that HDL particle-reconstituted GPCRs can provide an effective platform method for the identification of GPCR binding partners coupled with a mass spectrometry-based proteomic analysis.
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Affiliation(s)
- Ka Young Chung
- Department of Molecular and Cellular Physiology, Stanford University, Medical School, Beckman Center, Stanford, California, United States of America
- School of Pharmacy, Sungkyunkwan University, Jangan-gu, Suwon, South Korea
- * E-mail: (BKK); (KYC)
| | - Peter W. Day
- Department of Molecular and Cellular Physiology, Stanford University, Medical School, Beckman Center, Stanford, California, United States of America
- Biological Technologies, Genentech, Roche Group, South San Francisco, California, United States of America
| | - Gisselle Vélez-Ruiz
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Roger K. Sunahara
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor, Michigan, United States of America
| | - Brian K. Kobilka
- Department of Molecular and Cellular Physiology, Stanford University, Medical School, Beckman Center, Stanford, California, United States of America
- * E-mail: (BKK); (KYC)
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18
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Daulat A, Maurice P, Jockers R. Techniques for the Discovery of GPCR-Associated Protein Complexes. Methods Enzymol 2013; 521:329-45. [DOI: 10.1016/b978-0-12-391862-8.00018-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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19
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Signalling Complexes: Protein-Protein Interactions and Lipid Rafts. Mol Pharmacol 2012. [DOI: 10.1002/9781118451908.ch11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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20
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An activity-based probe reveals dynamic protein-protein interactions mediating IGF-1R transactivation by the GABA(B) receptor. Biochem J 2012; 443:627-34. [PMID: 22394253 DOI: 10.1042/bj20120188] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Many GPCRs (G-protein-coupled receptors) can activate RTKs (receptor tyrosine kinases) in the absence of RTK ligands, a phenomenon called transactivation. However, the underlying molecular mechanisms remain undefined. In the present study we investigate the molecular basis of GABA(B) (γ-aminobutyric acid B) receptor-mediated transactivation of IGF-1R (insulin-like growth factor type I receptor) in primary neurons. We take a chemical biology approach by developing an activity-based probe targeting the GABA(B) receptor. This probe enables us first to lock the GABA(B) receptor in an inactive state and then activate it with a positive allosteric modulator, thereby permitting monitoring of the dynamic of the protein complex associated with IGF-1R transactivation. We find that activation of the GABA(B) receptor induces a dynamic assembly and disassembly of a protein complex, including both receptors and their downstream effectors. FAK (focal adhesion kinase), a non-RTK, plays a key role in co-ordinating this dynamic process. Importantly, this dynamic of the GABA(B) receptor-associated complex is critical for transactivation and transactivation-dependent neuronal survival. The present study has identified an important mechanism underlying GPCR transactivation of RTKs, which was enabled by a new chemical biology tool generally applicable for dissecting GPCR signalling.
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21
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Tadagaki K, Jockers R, Kamal M. History and biological significance of GPCR heteromerization in the neuroendocrine system. Neuroendocrinology 2012; 95:223-31. [PMID: 22156565 DOI: 10.1159/000330000] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Accepted: 06/07/2011] [Indexed: 12/18/2022]
Abstract
G protein-coupled receptors (GPCRs) constitute a large family of seven transmembrane proteins that regulate major cellular functions. The important role of GPCRs in the neuroendocrine system is outlined by the great interest of pharmaceutical companies in developing new drugs targeting these receptors. GPCRs exist as monomers, but can also be organized in oligomeric structures composed of either homo- or heteromers. GPCR heteromerization may play an important role in modulating and fine-tuning GPCR function and signaling. The literature reports many examples of GPCR heteromers in vitro raising the question of the physiological relevance of these complexes in tissues. Considerable efforts are currently being directed towards conclusive evidence for the existence of GPCRs heteromers in vivo, a crucial step for the validation of the concept of GPCR heteromerization and future drug development. The present review will give a brief history of GPCR oligomerization and emphasize the importance and physiological relevance of GPCR heteromerization by discussing key examples of GPCR couples.
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Affiliation(s)
- Kenjiro Tadagaki
- Inserm, U1016, Institut Cochin, CNRS UMR 8104, Université Paris Descartes, Paris, France
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22
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Daulat AM, Maurice P, Jockers R. Tandem affinity purification and identification of GPCR-associated protein complexes. Methods Mol Biol 2011; 746:399-409. [PMID: 21607871 DOI: 10.1007/978-1-61779-126-0_23] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
The first tandem affinity purification (TAP) protocol was described in 1999. Originally designed for the purification of protein complexes in yeast RNA splicing, its application rapidly expanded towards whole proteome analysis in yeast and mammalian cells. More recently, TAP has been applied to the purification of G protein-coupled receptor (GPCR)-associated protein complexes (GAPCs). This approach is particularly attractive for GPCRs, as the native, seven transmembrane structure is used as bait to purify GAPCs from mammalian cells expressing receptors at physiological levels. Here, a detailed protocol of the TAP method applied to GPCRs is presented.
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Affiliation(s)
- Avais M Daulat
- Institut Cochin, Université Paris Descartes, INSERM, Paris, France
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23
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Maurice P, Kamal M, Jockers R. Asymmetry of GPCR oligomers supports their functional relevance. Trends Pharmacol Sci 2011; 32:514-20. [PMID: 21715028 DOI: 10.1016/j.tips.2011.05.006] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 05/19/2011] [Accepted: 05/20/2011] [Indexed: 01/29/2023]
Abstract
G protein-coupled receptors (GPCRs) can exist as dimers or as larger oligomeric clusters that enable intercommunication between different receptor protomers within the same complex. This phenomenon is observed at three distinct levels: (i) at the level of ligand binding where the activation of one protomer can allosterically inhibit or facilitate ligand binding to the second protomer; (ii) at the level of ligand-induced conformational switches, which occur between transmembrane domains of the two protomers; and (iii) within GPCR-associated protein complexes, either directly at the level of GPCR-interacting proteins or at further downstream levels of the complex. Intercommunication at these different levels introduces asymmetry within GPCR dimers wherein each protomer fulfills its specific task. In this review, we discuss how the asymmetric behavior of GPCRs highlights the advantage of oligomeric receptor organization and supports the functional relevance of GPCR dimerization.
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Affiliation(s)
- Pascal Maurice
- Inserm, U1016, Institut Cochin, 22 rue Méchain, 75014 Paris, France
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24
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Peptide affinity purification for the isolation and identification of GPCR-associated protein complexes. Methods Mol Biol 2011. [PMID: 21607870 DOI: 10.1007/978-1-61779-126-0_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Protein networks and their dynamic regulation play a fundamental role in biological systems. Seven transmembrane-spanning G protein-coupled receptors (GPCRs) constitute the largest family of membrane receptors controlling the flow of information from the extracellular environment into cells by inducing intracellular signaling pathways. Several GPCR-associated protein complexes (GAPCs), particularly those binding to the intracellular carboxyl-terminus (C-terminus), have been identified over the last 20 years. Recent optimizations in purification protocols and advances in mass spectrometry-based protein identification techniques have considerably accelerated the identification of GAPCs. We will concentrate here on a description of the latest version of the peptide affinity purification approach dedicated to the purification of GAPCs interacting with GPCR C-termini or any other soluble receptor subdomain.
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25
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Borch J, Roepstorff P, Møller-Jensen J. Nanodisc-based co-immunoprecipitation for mass spectrometric identification of membrane-interacting proteins. Mol Cell Proteomics 2011; 10:O110.006775. [PMID: 21532009 DOI: 10.1074/mcp.o110.006775] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Proteomic identification of protein interactions with membrane associated molecules in their native membrane environment pose a challenge because of technical problems of membrane handling. We investigate the possibility of employing membrane nanodiscs for harboring the membrane associated molecule to tackle the challenges. Nanodiscs are stable, homogenous pieces of membrane with a discoidal shape. They are stabilized by an encircling amphipatic protein with an engineered epitope tag. In the present study we employ the epitope tag of the nanodiscs for detection and co-immunoprecipitation of interaction partners of the glycolipid ganglioside GM1 harbored by nanodiscs. Highly specific binding activity for nanodisc-GM1 immobilized on sensorchips was observed by surface plasmon resonance in culture media from enterotoxigenic Escherischia coli. To isolate the interaction partner(s) from enterotoxigenic Escherischia coli, GM1-nanodiscs were employed for co-immunoprecipitation. The B subunit of heat labile enterotoxin was identified as a specific interaction partner by mass spectrometry, thus demonstrating that nanodisc technology is useful for highly specific detection and identification of interaction partners to specific lipids embedded in a membrane bilayer.
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Affiliation(s)
- Jonas Borch
- Institute for Biochemistry and Molecular Biology, University of Southern Denmark, DK-5230 Odense M, Denmark.
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26
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Borroto-Escuela DO, Correia PA, Romero-Fernandez W, Narvaez M, Fuxe K, Ciruela F, Garriga P. Muscarinic receptor family interacting proteins: Role in receptor function. J Neurosci Methods 2011; 195:161-9. [DOI: 10.1016/j.jneumeth.2010.11.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Revised: 11/23/2010] [Accepted: 11/24/2010] [Indexed: 02/03/2023]
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Expanding the Concept of G Protein-Coupled Receptor (GPCR) Dimer Asymmetry towards GPCR-Interacting Proteins. Pharmaceuticals (Basel) 2011. [PMCID: PMC4053957 DOI: 10.3390/ph4020273] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
G protein-coupled receptors (GPCRs), major targets of drug discovery, are organized in dimeric and/or oligomeric clusters. The minimal oligomeric unit, the dimer, is composed of two protomers, which can behave differently within the dimer. Several examples of GPCR asymmetry within dimers at the level of ligand binding, ligand-promoted conformational changes, conformational changes within transmembrane domains, G protein coupling, and most recently GPCR-interacting proteins (GIPs), have been reported in the literature. Asymmetric organization of GPCR dimers has important implications on GPCR function and drug design. Indeed, the extension of the “asymmetry concept” to GIPs adds a new level of specific therapeutic intervention.
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28
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Maurice P, Guillaume JL, Benleulmi-Chaachoua A, Daulat AM, Kamal M, Jockers R. GPCR-Interacting Proteins, Major Players of GPCR Function. PHARMACOLOGY OF G PROTEIN COUPLED RECEPTORS 2011; 62:349-80. [DOI: 10.1016/b978-0-12-385952-5.00001-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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29
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Kamal M, Jockers R. Biological Significance of GPCR Heteromerization in the Neuro-Endocrine System. Front Endocrinol (Lausanne) 2011; 2:2. [PMID: 22649357 PMCID: PMC3355952 DOI: 10.3389/fendo.2011.00002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2010] [Accepted: 01/13/2011] [Indexed: 11/26/2022] Open
Abstract
Clustering of proteins in higher order complexes is a common theme in biology and profoundly influences protein function. The idea that seven-transmembrane spanning G protein-coupled receptors (GPCRs) might form dimers or higher order oligomeric complexes has been formulated more than 20 years ago. Since then, this phenomenon has been investigated with many different biochemical and biophysical techniques. The more recent notion of GPCR heteromerization describes the specific association of two different GPCRs. GPCR heteromerization may be of primary importance in neuroendocrinology, as this may explain at least some of the functional crosstalks described between different hormonal systems. Importantly, many GPCR heteromers have distinct functional properties compared to their corresponding homomers. Heteromer-specific pharmacological profiles might be exploited for drug design and open new therapeutic options. GPCR heteromerization has been first studied in heterologous expression systems. Today, increasing evidence for the existence of GPCR heteromers in endogenous systems is emerging providing crucial evidence for the physiological function of GPCR heteromerization.
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Affiliation(s)
- Maud Kamal
- Department of Endocrinology, Metabolism and Cancer, INSERM U1016, Institut CochinParis, France
- CNRS UMR 8104Paris, France
- University Paris DescartesParis, France
| | - Ralf Jockers
- Department of Endocrinology, Metabolism and Cancer, INSERM U1016, Institut CochinParis, France
- CNRS UMR 8104Paris, France
- University Paris DescartesParis, France
- *Correspondence: Ralf Jockers, Institut Cochin, 22 rue Méchain, 75014 Paris, France. e-mail:
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30
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Nehmé R, Mus-Veteau I. Proteins of the Hedgehog signaling pathway as therapeutic targets against cancer. Expert Rev Proteomics 2010; 7:601-12. [PMID: 20653513 DOI: 10.1586/epr.10.39] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The Hedgehog pathway plays a crucial role in growth and patterning during embryonic development and is involved in stem cell maintenance and proliferation in adult tissues. Mutations that increase the overall activity of the pathway are often associated with a higher incidence of cancers. This article focuses on the mutations, misfoldings and deregulations of the Hedgehog pathway proteins that have been reported to be involved in different tumors, and on small molecules targeting these proteins shown to slow down the growth of certain tumors in various animal models. We propose that proteomics could be a powerful tool to identify new targets of the Hedgehog pathway, enabling the discovery of effective and novel treatments for cancers.
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Affiliation(s)
- Rony Nehmé
- MRC - Laboratory of Molecular Biology, Cambridge, UK
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Molecular organization and dynamics of the melatonin MT₁ receptor/RGS20/G(i) protein complex reveal asymmetry of receptor dimers for RGS and G(i) coupling. EMBO J 2010; 29:3646-59. [PMID: 20859254 DOI: 10.1038/emboj.2010.236] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Accepted: 08/27/2010] [Indexed: 12/27/2022] Open
Abstract
Functional asymmetry of G-protein-coupled receptor (GPCR) dimers has been reported for an increasing number of cases, but the molecular architecture of signalling units associated to these dimers remains unclear. Here, we characterized the molecular complex of the melatonin MT₁ receptor, which directly and constitutively couples to G(i) proteins and the regulator of G-protein signalling (RGS) 20. The molecular organization of the ternary MT₁/G(i)/RGS20 complex was monitored in its basal and activated state by bioluminescence resonance energy transfer between probes inserted at multiple sites of the complex. On the basis of the reported crystal structures of G(i) and the RGS domain, we propose a model wherein one G(i) and one RGS20 protein bind to separate protomers of MT₁ dimers in a pre-associated complex that rearranges upon agonist activation. This model was further validated with MT₁/MT₂ heterodimers. Collectively, our data extend the concept of asymmetry within GPCR dimers, reinforce the notion of receptor specificity for RGS proteins and highlight the advantage of GPCRs organized as dimers in which each protomer fulfils its specific task by binding to different GPCR-interacting proteins.
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