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Van Renterghem C, Nemecz Á, Delarue-Cochin S, Joseph D, Corringer PJ. Fumarate as positive modulator of allosteric transitions in the pentameric ligand-gated ion channel GLIC: Requirement of an intact vestibular pocket. J Physiol 2023. [PMID: 37026398 DOI: 10.1113/jp283765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 04/03/2023] [Indexed: 04/08/2023] Open
Abstract
GLIC is a prokaryotic orthologue of brain pentameric neurotransmitter receptors. Using whole-cell patch-clamp electrophysiology in a host cell line, we show that short-chain di-carboxylate compounds are positive modulators of pHo 5-evoked GLIC activity, with a rank order of action fumarate > succinate > malonate > glutarate. Potentiation by fumarate depends on intracellular pH, mainly as a result of a strong decrease of the pHo 5-evoked current when intracellular pH decreases. The modulating effect of fumarate also depends on extracellular pH, as fumarate is a weak inhibitor at pHo 6 and shows no agonist action at neutral pHo. A mutational analysis of residue-dependency for succinate and fumarate effects, based on two carboxylate-binding pockets previously identified by crystallography (Fourati et al. 2020), shows that positive modulation involves both the inter-subunit pocket, homologous to the neurotransmitter-binding orthotopic site, and the intra-subunit (also called vestibular) pocket. An almost similar pattern of mutational impact is observed for the effect of caffeate, a known negative modulator. We propose, for both di-carboxylate compounds and caffeate, a model where the inter-subunit pocket is the actual binding site, and the region corresponding to the vestibular pocket is required either for inter-subunit binding itself, or for binding-to-gating coupling during the allosteric transitions involved in pore gating modulation. KEY POINTS: Using a bacterial orthologue of brain pentameric neurotransmitter receptors, we show that the orthotopic/orthosteric agonist site and the adjacent vestibular region are functionally inter-dependent in mediating compound-elicited modulation. We propose that the two sites in the extracellular domain are involved "in series", a mechanism which may have relevance to Eukaryote receptors. We show that short-chain di-carboxylate compounds are positive modulators of GLIC. The most potent compound identified is fumarate, known to occupy the orthotopic/orthosteric site in previously published crystal structures. We show that intracellular pH modulates GLIC allosteric transitions, as previously known for extracellular pH. We report a caesium to sodium permeability ratio (PCs/PNa) of 0.54 for GLIC ion pore. Abstract figure legends We show that a low-pH intracellular solution negatively modulates allosteric transitions (see Legend to Fig. 3E for details), in the Prokaryote pentameric ligand-gated ion channel (pLGIC) GLIC, known to be activated by the agonist action of low-pH extracellular solutions. We use this property in the characterization of fumarate, and other compounds, as positive modulators of allosteric transitions. Data from a mutational analysis in two carboxylate binding pockets, together with published crystallographic data, shows that the modulator action of compounds binding at the conserved orthotopic site (homologous to the neurotransmitter / agonist binding site in brain pLGICs) is under the strict control of the adjacent intra-subunit vestibular region. We propose that both positive and negative modulators of allosteric transitions act by binding to the orthotopic main binding site. The 2-site "in series" mechanism proposed may have some relevance to Eukaryote pLGICs. This article is protected by copyright. All rights reserved.
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Affiliation(s)
| | - Ákos Nemecz
- Institut Pasteur, Université Paris-Cité, Paris, France
| | | | - Delphine Joseph
- Université Paris-Saclay, CNRS, BioCIS, Châtenay-Malabry, France
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Fourati Z, Ruza RR, Laverty D, Drege E, Delarue-Cochin S, Joseph D, Koehl P, Smart T, Delarue M. Barbiturates Bind in the GLIC Ion Channel Pore and Cause Inhibition by Stabilizing a Shut State. Biophys J 2017. [DOI: 10.1016/j.bpj.2016.11.2984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Fourati Z, Ruza RR, Laverty D, Drège E, Delarue-Cochin S, Joseph D, Koehl P, Smart T, Delarue M. Barbiturates Bind in the GLIC Ion Channel Pore and Cause Inhibition by Stabilizing a Closed State. J Biol Chem 2016; 292:1550-1558. [PMID: 27986812 DOI: 10.1074/jbc.m116.766964] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 12/06/2016] [Indexed: 12/12/2022] Open
Abstract
Barbiturates induce anesthesia by modulating the activity of anionic and cationic pentameric ligand-gated ion channels (pLGICs). Despite more than a century of use in clinical practice, the prototypic binding site for this class of drugs within pLGICs is yet to be described. In this study, we present the first X-ray structures of barbiturates bound to GLIC, a cationic prokaryotic pLGIC with excellent structural homology to other relevant channels sensitive to general anesthetics and, as shown here, to barbiturates, at clinically relevant concentrations. Several derivatives of barbiturates containing anomalous scatterers were synthesized, and these derivatives helped us unambiguously identify a unique barbiturate binding site within the central ion channel pore in a closed conformation. In addition, docking calculations around the observed binding site for all three states of the receptor, including a model of the desensitized state, showed that barbiturates preferentially stabilize the closed state. The identification of this pore binding site sheds light on the mechanism of barbiturate inhibition of cationic pLGICs and allows the rationalization of several structural and functional features previously observed for barbiturates.
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Affiliation(s)
- Zaineb Fourati
- From the Unité de Dynamique Structurale des Macromolécules, UMR 3528 du CNRS, Institut Pasteur, 75015 Paris, France
| | - Reinis Reinholds Ruza
- From the Unité de Dynamique Structurale des Macromolécules, UMR 3528 du CNRS, Institut Pasteur, 75015 Paris, France
| | - Duncan Laverty
- the Department of Neuroscience, Physiology and Pharmacology, University College London, London WC1E 6BT, United Kingdom
| | - Emmanuelle Drège
- the UMR 8076 du CNRS, BioCIS, Faculté de Pharmacie, Université Paris Sud, 92296 Chatenay-Malabry, France
| | - Sandrine Delarue-Cochin
- the UMR 8076 du CNRS, BioCIS, Faculté de Pharmacie, Université Paris Sud, 92296 Chatenay-Malabry, France
| | - Delphine Joseph
- the UMR 8076 du CNRS, BioCIS, Faculté de Pharmacie, Université Paris Sud, 92296 Chatenay-Malabry, France
| | - Patrice Koehl
- the Department of Computer Science, University of California, Davis, California 95616
| | - Trevor Smart
- the Department of Neuroscience, Physiology and Pharmacology, University College London, London WC1E 6BT, United Kingdom.
| | - Marc Delarue
- From the Unité de Dynamique Structurale des Macromolécules, UMR 3528 du CNRS, Institut Pasteur, 75015 Paris, France.
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Scornet N, Delarue-Cochin S, Azoury ME, Le Mignon M, Chemelle JA, Nony E, Maillère B, Terreux R, Pallardy M, Joseph D. Bioinspired Design and Oriented Synthesis of Immunogenic Site-Specifically Penicilloylated Peptides. Bioconjug Chem 2016; 27:2629-2645. [DOI: 10.1021/acs.bioconjchem.6b00393] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Noémie Scornet
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, Châtenay-Malabry, F-92296, France
| | - Sandrine Delarue-Cochin
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, Châtenay-Malabry, F-92296, France
| | - Marie Eliane Azoury
- INSERM
UMR 996, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, F-92296, France
| | - Maxime Le Mignon
- Stallergenes Greer, 6 rue Alexis de
Tocqueville, Antony, 92160, France
| | - Julie-Anne Chemelle
- PRABI-LG, UMR CNRS 5305 (LBTI), Lyon, 69367, France
- UFR Pharmacie, Lyon, 69367, France
| | - Emmanuel Nony
- Stallergenes Greer, 6 rue Alexis de
Tocqueville, Antony, 92160, France
| | - Bernard Maillère
- CEA,
Institut de Biologie et de Technologies, Université Paris-Saclay, Gif-sur-Yvette, 91190, France
| | - Raphaël Terreux
- PRABI-LG, UMR CNRS 5305 (LBTI), Lyon, 69367, France
- UFR Pharmacie, Lyon, 69367, France
| | - Marc Pallardy
- INSERM
UMR 996, Université Paris-Sud, Université Paris-Saclay, Châtenay-Malabry, F-92296, France
| | - Delphine Joseph
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, Châtenay-Malabry, F-92296, France
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Affiliation(s)
- Thi Hong Long Nguyen
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
| | - Nicolas Gigant
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
| | - Sandrine Delarue-Cochin
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
| | - Delphine Joseph
- BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, F-92296 Châtenay-Malabry, France
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Azoury M, Scornet N, Delarue-Cochin S, Nhim C, Maillere B, Weaver R, Claude N, Joseph D, Pallardy M. Characterization of naive T-cell response specific to penicillin: Implication in drug-allergy. Toxicol Lett 2015. [DOI: 10.1016/j.toxlet.2015.08.663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Prevost MS, Delarue-Cochin S, Marteaux J, Colas C, Van Renterghem C, Blondel A, Malliavin T, Corringer PJ, Joseph D. Identification of Cinnamic Acid Derivatives As Novel Antagonists of the Prokaryotic Proton-Gated Ion Channel GLIC. J Med Chem 2013; 56:4619-30. [DOI: 10.1021/jm400374q] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Marie S. Prevost
- Institut Pasteur, Unité Récepteurs-Canaux,
Paris, France
- CNRS UMR 3571, Paris, France
- Université Pierre et Marie Curie (UPMC), Cellule Pasteur, Paris, France
| | - Sandrine Delarue-Cochin
- Université Paris-Sud, Équipe de Chimie des Substances Naturelles, Châtenay-Malabry,
France
- CNRS UMR 8076 BioCIS, Châtenay-Malabry, France
| | - Justine Marteaux
- Université Paris-Sud, Équipe de Chimie des Substances Naturelles, Châtenay-Malabry,
France
- CNRS UMR 8076 BioCIS, Châtenay-Malabry, France
| | - Claire Colas
- Institut Pasteur, Unité de Bioinformatique Structurale, Paris, France
- CNRS UMR 3528, Paris, France
| | | | - Arnaud Blondel
- Institut Pasteur, Unité de Bioinformatique Structurale, Paris, France
- CNRS UMR 3528, Paris, France
| | - Thérèse Malliavin
- Institut Pasteur, Unité de Bioinformatique Structurale, Paris, France
- CNRS UMR 3528, Paris, France
| | - Pierre-Jean Corringer
- Institut Pasteur, Unité Récepteurs-Canaux,
Paris, France
- CNRS UMR 3571, Paris, France
| | - Delphine Joseph
- Université Paris-Sud, Équipe de Chimie des Substances Naturelles, Châtenay-Malabry,
France
- CNRS UMR 8076 BioCIS, Châtenay-Malabry, France
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Drège E, Guillaume A, Boukhedimi N, Marrot J, Troufflard C, Tran Huu-Dau ME, Joseph D, Delarue-Cochin S. A Facile and Stereocontrolled Synthesis of γ-Substituted γ-Fluoroglutamates by Conjugate Addition: Conflicting Effect between Fluorinated Enaminoester and Hinderered Michael Acceptor. J Org Chem 2010; 75:7596-604. [DOI: 10.1021/jo101417c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Emmanuelle Drège
- Univ. Paris-Sud, Equipe de Synthèse Organique et de Pharmacochimie, UMR CNRS 8076, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
- IPSIT “Institut Paris-Sud d'Innovation Thérapeutique”, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
| | - Anaïs Guillaume
- Univ. Paris-Sud, Equipe de Synthèse Organique et de Pharmacochimie, UMR CNRS 8076, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
- IPSIT “Institut Paris-Sud d'Innovation Thérapeutique”, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
| | - Nadjia Boukhedimi
- Univ. Paris-Sud, Equipe de Synthèse Organique et de Pharmacochimie, UMR CNRS 8076, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
- IPSIT “Institut Paris-Sud d'Innovation Thérapeutique”, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
| | - Jérôme Marrot
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles, 45 avenue des Etats-Unis, Versailles, F-78035, France
| | - Claire Troufflard
- Univ. Paris-Sud, Equipe de Synthèse Organique et de Pharmacochimie, UMR CNRS 8076, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
- Univ. Paris-Sud, Service commun de RMN, UMR CNRS 8076, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
| | - Marie-Elise Tran Huu-Dau
- Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, Gif sur Yvette, F-91198, France
| | - Delphine Joseph
- Univ. Paris-Sud, Equipe de Synthèse Organique et de Pharmacochimie, UMR CNRS 8076, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
- IPSIT “Institut Paris-Sud d'Innovation Thérapeutique”, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
| | - Sandrine Delarue-Cochin
- Univ. Paris-Sud, Equipe de Synthèse Organique et de Pharmacochimie, UMR CNRS 8076, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
- IPSIT “Institut Paris-Sud d'Innovation Thérapeutique”, 5, rue Jean-Baptiste Clément, Châtenay-Malabry, F-92296, France
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Almahli H, Hendra F, Troufflard C, Cavé C, Joseph D, Delarue-Cochin S. Asymmetric reduction of β-ketoesters and chiral β-iminoesters: Impact of a α-quaternary stereocenter. Chirality 2010; 23:265-71. [DOI: 10.1002/chir.20909] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2009] [Accepted: 06/22/2010] [Indexed: 11/10/2022]
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Delarue-Cochin S, McCort-Tranchepain I. Synthesis of new aza-analogs of staurosporine, K-252a and rebeccamycin by nucleophilic opening of C2-symmetric bis-aziridines. Org Biomol Chem 2009; 7:706-16. [DOI: 10.1039/b815737e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Delarue-Cochin S, Paunescu E, Maes L, Mouray E, Sergheraert C, Grellier P, Melnyk P. Synthesis and antimalarial activity of new analogues of amodiaquine. Eur J Med Chem 2008; 43:252-60. [PMID: 17485145 DOI: 10.1016/j.ejmech.2007.03.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Revised: 03/02/2007] [Accepted: 03/08/2007] [Indexed: 11/28/2022]
Abstract
In order to determine the real significance of the 4'-phenolic group in the antimalarial activity and/or cytotoxicity of amodiaquine (AQ), analogues for which this functionality was shifted or modified were synthesized. Good in vitro antimalarial activity was obtained for compounds unable to form intramolecular hydrogen bond. Among the compounds synthesized, new amino derivative 5 displayed the greatest selectivity index towards the most CQ-resistant strain tested and was active in mice infected by Plasmodium berghei.
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Affiliation(s)
- Sandrine Delarue-Cochin
- UMR CNRS 8525, Université de Lille II, Institut Pasteur de Lille 1 rue du Professeur Calmette, B.P. 447, 59021 Lille cedex, France
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Delarue-Cochin S, Pan JJ, Dauteloup A, Hendra F, Angoh RG, Joseph D, Stephens PJ, Cavé C. Asymmetric Michael reaction: novel efficient access to chiral β-ketophosphonates. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.02.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Joseph D, Cabral dos Santos L, Bahlaouan Z, El Kassimi K, Troufflard C, Delarue-Cochin S, Zahouily M. Rapid and Efficient Access to Meso-2,5-cis-disubstituted Pyrrolidines by Double Aza-Michael Reactions of Chiral Primary Amines. HETEROCYCLES 2007. [DOI: 10.3987/com-07-s(u)56] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Desmaële D, Delarue-Cochin S, Cavé C, D'Angelo J, Morgant G. Asymmetric Michael Reaction Involving Chiral Imines/Secondary Enamines: Stereocontrolled Synthesis of 2,2-Disubstituted Tetrahydrothiophen-3-ones. Org Lett 2004; 6:2421-4. [PMID: 15228294 DOI: 10.1021/ol0491944] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The asymmetric Michael reaction involving a chiral imine derived from 2-methyltetrahydrothiophenone-3-one and enantiopure (R)-1-phenylethylamine with a variety of electrophilic alkenes furnished 2,2-disubstituted tetrahydrothiophenone-3-ones with good yields and excellent stereoselectivity.
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Affiliation(s)
- Didier Desmaële
- Unité de Chimie Organique associée au CNRS (UMR 8076) and Laboratoire de Cristallographie Bioinorganique, Centre d'Etudes Pharmaceutiques, Université Paris-Sud, 5 rue J.-B. Clément, 92296 Châtenay-Malabry, France.
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