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Barbe P, Molgó J, Thai R, Urman A, Servent D, Arnich N, Keck M. Acute Effects of Brevetoxin-3 Administered via Oral Gavage to Mice. Mar Drugs 2023; 21:644. [PMID: 38132965 PMCID: PMC10744354 DOI: 10.3390/md21120644] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/05/2023] [Accepted: 12/13/2023] [Indexed: 12/23/2023] Open
Abstract
Brevetoxins (BTXs) constitute a family of lipid-soluble toxic cyclic polyethers mainly produced by Karenia brevis, which is the main vector for a foodborne syndrome known as neurotoxic shellfish poisoning (NSP) in humans. To prevent health risks associated with the consumption of contaminated shellfish in France, the French Agency for Food, Environmental and Occupational Health & Safety (ANSES) recommended assessing the effects of BTXs via an acute oral toxicity study in rodents. Here, we investigated the effect of a single oral administration in both male and female mice with several doses of BTX-3 (100 to 1,500 µg kg-1 bw) during a 48 h observation period in order to provide toxicity data to be used as a starting point for establishing an acute oral reference dose (ARfD). We monitored biological parameters and observed symptomatology, revealing different effects of this toxin depending on the sex. Females were more sensitive than males to the impact of BTX-3 at the lowest doses on weight loss. For both males and females, BTX-3 induced a rapid, transient and dose-dependent decrease in body temperature, and a transient dose-dependent reduced muscle activity. Males were more sensitive to BTX-3 than females with more frequent observations of failures in the grip test, convulsive jaw movements, and tremors. BTX-3's impacts on symptomatology were rapid, appearing during the 2 h after administration, and were transient, disappearing 24 h after administration. The highest dose of BTX-3 administered in this study, 1,500 µg kg-1 bw, was more toxic to males, leading to the euthanasia of three out of five males only 4 h after administration. BTX-3 had no effect on water intake, and affected neither the plasma chemistry parameters nor the organs' weight. We identified potential points of departure that could be used to establish an ARfD (decrease in body weight, body temperature, and muscle activity).
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Affiliation(s)
- Peggy Barbe
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, France; (P.B.); (J.M.); (R.T.); (A.U.); (D.S.)
| | - Jordi Molgó
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, France; (P.B.); (J.M.); (R.T.); (A.U.); (D.S.)
| | - Robert Thai
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, France; (P.B.); (J.M.); (R.T.); (A.U.); (D.S.)
| | - Apolline Urman
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, France; (P.B.); (J.M.); (R.T.); (A.U.); (D.S.)
| | - Denis Servent
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, France; (P.B.); (J.M.); (R.T.); (A.U.); (D.S.)
| | - Nathalie Arnich
- Risk Assessment Directorate, ANSES—French Agency for Food, Environmental and Occupational Health and Safety, 94701 Maisons-Alfort, France;
| | - Mathilde Keck
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, France; (P.B.); (J.M.); (R.T.); (A.U.); (D.S.)
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2
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Jamgotchian L, Devel L, Thai R, Poupel L, Huby T, Gautier E, Le Goff W, Lesnik P, Gravel E, Doris E. Targeted delivery of LXR-agonists to atherosclerotic lesions mediated by polydiacetylene micelles. Nanoscale 2023; 15:18864-18870. [PMID: 37966726 DOI: 10.1039/d3nr04778d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
We report the development of compact and stabilized micelles incorporating a synthetic LXR agonist prodrug for the passive targeting of atherosclerotic lesions and therapeutic intervention. In vivo studies showed that the nanohybrid micelles exhibited favorable pharmacokinetics/biodistribution and were able to upregulate, to some extent, LXR target genes with no alteration of lipid metabolism.
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Affiliation(s)
- Lucie Jamgotchian
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France.
| | - Laurent Devel
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMOS, 91191 Gif-sur-Yvette, France.
| | - Robert Thai
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMOS, 91191 Gif-sur-Yvette, France.
| | - Lucie Poupel
- Inovarion, 251 rue saint Jacques, 75005 Paris, France
| | - Thierry Huby
- Sorbonne Université, INSERM UMRS-1166, Institute of Cardiometabolism and Nutrition (ICAN), 75013 Paris, France.
| | - Emmanuel Gautier
- Sorbonne Université, INSERM UMRS-1166, Institute of Cardiometabolism and Nutrition (ICAN), 75013 Paris, France.
| | - Wilfried Le Goff
- Sorbonne Université, INSERM UMRS-1166, Institute of Cardiometabolism and Nutrition (ICAN), 75013 Paris, France.
| | - Philippe Lesnik
- Sorbonne Université, INSERM UMRS-1166, Institute of Cardiometabolism and Nutrition (ICAN), 75013 Paris, France.
| | - Edmond Gravel
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France.
| | - Eric Doris
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France.
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3
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Billet A, Hadjerci J, Tran T, Kessler P, Ulmer J, Mourier G, Ghazarian M, Gonzalez A, Thai R, Urquia P, Van Baelen AC, Meola A, Fernandez I, Deville-Foillard S, MacDonald E, Paolini L, Schmidt F, Rey FA, Kay MS, Tartour E, Servent D, Johannes L. A synthetic delivery vector for mucosal vaccination. Biomaterials 2023; 302:122298. [PMID: 37713762 DOI: 10.1016/j.biomaterials.2023.122298] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 07/26/2023] [Accepted: 08/26/2023] [Indexed: 09/17/2023]
Abstract
The success of mRNA-based vaccines during the Covid-19 pandemic has highlighted the value of this new platform for vaccine development against infectious disease. However, the CD8+ T cell response remains modest with mRNA vaccines, and these do not induce mucosal immunity, which would be needed to prevent viral spread in the healthy population. To address this drawback, we developed a dendritic cell targeting mucosal vaccination vector, the homopentameric STxB. Here, we describe the highly efficient chemical synthesis of the protein, and its in vitro folding. This straightforward preparation led to a synthetic delivery tool whose biophysical and intracellular trafficking characteristics were largely indistinguishable from recombinant STxB. The chemical approach allowed for the generation of new variants with bioorthogonal handles. Selected variants were chemically coupled to several types of antigens derived from the mucosal viruses SARS-CoV-2 and type 16 human papillomavirus. Upon intranasal administration in mice, mucosal immunity, including resident memory CD8+ T cells and IgA antibodies was induced against these antigens. Our study thereby identifies a novel synthetic antigen delivery tool for mucosal vaccination with an unmatched potential to respond to an urgent medical need.
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Affiliation(s)
- Anne Billet
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France; Université de Paris, 85 boulevard Saint-Germain, 75006, Paris, France
| | - Justine Hadjerci
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France
| | - Thi Tran
- Université Paris Cité, INSERM, PARCC, PARIS, France
| | - Pascal Kessler
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | - Jonathan Ulmer
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France
| | - Gilles Mourier
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | - Marine Ghazarian
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | - Anthony Gonzalez
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | - Robert Thai
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France
| | | | | | - Annalisa Meola
- Institut Pasteur, Université Paris-Cité, Structural Virology Unit, CNRS UMR 3569, 28 Rue du Docteur Roux, 75015, Paris, France
| | - Ignacio Fernandez
- Institut Pasteur, Université Paris-Cité, Structural Virology Unit, CNRS UMR 3569, 28 Rue du Docteur Roux, 75015, Paris, France
| | - Stéphanie Deville-Foillard
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France; Institut de Chimie des Substances Naturelles, Université Paris-Saclay, CNRS UPR 2301, Gif-sur-Yvette, 91198, France
| | - Ewan MacDonald
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France
| | - Léa Paolini
- Université Paris Cité, INSERM, PARCC, PARIS, France
| | - Frédéric Schmidt
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France
| | - Félix A Rey
- Institut Pasteur, Université Paris-Cité, Structural Virology Unit, CNRS UMR 3569, 28 Rue du Docteur Roux, 75015, Paris, France
| | - Michael S Kay
- University of Utah, Department of Biochemistry Biopolymers Research Building, 20 South 2030 East, Salt Lake City, UT, 84112-5700, USA
| | - Eric Tartour
- Université Paris Cité, INSERM, PARCC, PARIS, France; Department of Immunology, Hopital Europeen Georges-Pompidou, AP-HP, Paris, Cedex 15 75908, France.
| | - Denis Servent
- Université Paris Saclay, CEA, DMTS/SIMoS, 91191, Gif sur Yvette, Cedex, France.
| | - Ludger Johannes
- Institut Curie, Université PSL, Cellular and Chemical Biology Unit, U1143 INSERM, UMR3666 CNRS, 26 Rue d'Ulm, 75248, Paris, Cedex 05, France.
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Cahuzac H, Sallustrau A, Malgorn C, Beau F, Barbe P, Babin V, Dubois S, Palazzolo A, Thai R, Correia I, Lee KB, Garcia-Argote S, Lequin O, Keck M, Nozach H, Feuillastre S, Ge X, Pieters G, Audisio D, Devel L. Monitoring In Vivo Performances of Protein-Drug Conjugates Using Site-Selective Dual Radiolabeling and Ex Vivo Digital Imaging. J Med Chem 2022; 65:6953-6968. [PMID: 35500280 PMCID: PMC9833330 DOI: 10.1021/acs.jmedchem.2c00401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
In preclinical models, the development and optimization of protein-drug conjugates require accurate determination of the plasma and tissue profiles of both the protein and its conjugated drug. To this aim, we developed a bioanalytical strategy based on dual radiolabeling and ex vivo digital imaging. By combining enzymatic and chemical reactions, we obtained homogeneous dual-labeled anti-MMP-14 Fabs (antigen-binding fragments) conjugated to monomethyl auristatin E where the protein scaffold was labeled with carbon-14 (14C) and the conjugated drug with tritium (3H). These antibody-drug conjugates with either a noncleavable or a cleavable linker were then evaluated in vivo. By combining liquid scintillation counting and ex vivo dual-isotope radio-imaging, it was possible not only to monitor both components simultaneously during their circulation phase but also to quantify accurately their amount accumulated within the different organs.
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Affiliation(s)
- Héloïse Cahuzac
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, (France)
| | - Antoine Sallustrau
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, (France)
| | - Carole Malgorn
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, (France)
| | - Fabrice Beau
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, (France)
| | - Peggy Barbe
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, (France)
| | - Victor Babin
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, (France)
| | - Steven Dubois
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, (France)
| | - Alberto Palazzolo
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, (France)
| | - Robert Thai
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, (France)
| | - Isabelle Correia
- Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, 75005 Paris, France
| | - Ki Baek Lee
- Institute of Molecular Medicine, University of Texas Health Science Center at Houston 1825 Pressler St, Houston TX 77030
| | - Sébastien Garcia-Argote
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, (France)
| | - Olivier Lequin
- Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules, LBM, 75005 Paris, France
| | - Mathilde Keck
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, (France)
| | - Hervé Nozach
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, (France)
| | - Sophie Feuillastre
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, (France)
| | - Xin Ge
- Institute of Molecular Medicine, University of Texas Health Science Center at Houston 1825 Pressler St, Houston TX 77030
| | - Gregory Pieters
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, (France)
| | - Davide Audisio
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, (France)
| | - Laurent Devel
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191 Gif-sur-Yvette, (France),
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5
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Servent D, Malgorn C, Bernes M, Gil S, Simasotchi C, Hérard AS, Delzescaux T, Thai R, Barbe P, Keck M, Beau F, Zakarian A, Dive V, Molgó J. First evidence that emerging pinnatoxin-G, a contaminant of shellfish, reaches the brain and crosses the placental barrier. Sci Total Environ 2021; 790:148125. [PMID: 34380275 DOI: 10.1016/j.scitotenv.2021.148125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 04/27/2021] [Accepted: 05/26/2021] [Indexed: 06/13/2023]
Abstract
Massive proliferation of some toxic marine dinoflagellates is responsible for the occurrence of harmful algal blooms and the contamination of fish and shellfish worldwide. Pinnatoxins (PnTx) (A-H) comprise an emerging phycotoxin family belonging to the cyclic imine toxin group. Interest has been focused on these lipophilic, fast-acting and highly potent toxins because they are widely found in contaminated shellfish, and can represent a risk for seafood consumers. PnTx display a potent antagonist effect on nicotinic acetylcholine receptors (nAChR), and in this study we assessed in vivo the ability of PnTx-G to cross physiological barriers to reach its molecular target. Radiolabeled [3H]-PnTx-G synthesized with good radiochemical purity and yield retained the high affinity of the natural toxin. Oral gavage or intravenous administration to adult rats and digital autoradiographic analyses revealed the biodistribution and toxicokinetics of [3H]-PnTx-G, which is rapidly cleared from blood, and accumulates in the liver and small intestine. The labeling of peripheral and brain adult/embryo rat tissues highlights its ability to cross the intestinal, blood-brain and placental barriers. High-resolution 3D-imaging and in vitro competition studies on rat embryo sections revealed the specificity of [3H]-PnTx-G binding and its selectivity for muscle and neuronal nAChR subtypes (such as α7 subtype). The use of a human perfused cotyledon model and mass spectrometry analyses disclosed that PnTx-G crosses the human placental barrier. The increasing worldwide occurrence of both the dinoflagellate Vulcanodinium rugosum and PnTx-contaminated shellfish, due to climate warming, raises concerns about the potential adverse impact that exposure to pinnatoxins may have for human health.
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Affiliation(s)
- Denis Servent
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, ERL CNRS 9004, F-91191 Gif sur Yvette, France.
| | - Carole Malgorn
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, ERL CNRS 9004, F-91191 Gif sur Yvette, France
| | - Mylène Bernes
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, ERL CNRS 9004, F-91191 Gif sur Yvette, France
| | - Sophie Gil
- Université de Paris, UMR-S1139, Faculté de Pharmacie de Paris, France
| | | | - Anne-Sophie Hérard
- Université Paris-Saclay, UMR9199, CNRS, CEA, MIRCen, Fontenay-aux-Roses, France
| | - Thierry Delzescaux
- Université Paris-Saclay, UMR9199, CNRS, CEA, MIRCen, Fontenay-aux-Roses, France
| | - Robert Thai
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, ERL CNRS 9004, F-91191 Gif sur Yvette, France
| | - Peggy Barbe
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, ERL CNRS 9004, F-91191 Gif sur Yvette, France
| | - Mathilde Keck
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, ERL CNRS 9004, F-91191 Gif sur Yvette, France
| | - Fabrice Beau
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, ERL CNRS 9004, F-91191 Gif sur Yvette, France
| | - Armen Zakarian
- University of California, Santa Barbara, Department of Chemistry and Biochemistry, CA 93106-9510, USA
| | - Vincent Dive
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, ERL CNRS 9004, F-91191 Gif sur Yvette, France
| | - Jordi Molgó
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, ERL CNRS 9004, F-91191 Gif sur Yvette, France.
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6
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Kaminska M, Bruyat P, Malgorn C, Doladilhe M, Cassar‐Lajeunesse E, Fruchart Gaillard C, De Souza M, Beau F, Thai R, Correia I, Galat A, Georgiadis D, Lequin O, Dive V, Bregant S, Devel L. Ligand‐Directed Modification of Active Matrix Metalloproteases: Activity‐based Probes with no Photolabile Group. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Monika Kaminska
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Pierrick Bruyat
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Carole Malgorn
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Marion Doladilhe
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Evelyne Cassar‐Lajeunesse
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Carole Fruchart Gaillard
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Mélissa De Souza
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Fabrice Beau
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Robert Thai
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Isabelle Correia
- CNRS, Laboratoire des Biomolécules, LBM Sorbonne Université Ecole Normale Supérieure PSL University 75005 Paris France
| | - Andrzej Galat
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Dimitris Georgiadis
- Department of Chemistry Laboratory of Organic Chemistry University of Athens Panepistimiopolis Zografou 15771 Athens Greece
| | - Olivier Lequin
- CNRS, Laboratoire des Biomolécules, LBM Sorbonne Université Ecole Normale Supérieure PSL University 75005 Paris France
| | - Vincent Dive
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Sarah Bregant
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
| | - Laurent Devel
- Université Paris-Saclay CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS 91191 Gif-sur-Yvette France
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7
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Kaminska M, Bruyat P, Malgorn C, Doladilhe M, Cassar-Lajeunesse E, Fruchart Gaillard C, De Souza M, Beau F, Thai R, Correia I, Galat A, Georgiadis D, Lequin O, Dive V, Bregant S, Devel L. Ligand-Directed Modification of Active Matrix Metalloproteases: Activity-based Probes with no Photolabile Group. Angew Chem Int Ed Engl 2021; 60:18272-18279. [PMID: 34096148 DOI: 10.1002/anie.202106117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 05/06/2021] [Indexed: 12/12/2022]
Abstract
Activity-based probes enable discrimination between the active enzyme and its inactive or inactivated counterparts. Since metalloproteases catalysis is non-covalent, activity-based probes targeting them have been systematically developed by decorating reversible inhibitors with photo-crosslinkers. By exploiting two types of ligand-guided chemistry, we identified novel activity-based probes capable of covalently modifying the active site of matrix metalloproteases (MMPs) without any external trigger. The ability of these probes to label recombinant MMPs was validated in vitro and the identity of the main labelling sites within their S3 ' region unambiguously assigned. We also demonstrated that our affinity probes can react with rhMMP12 at nanogram scale (that is, at 0.07 % (w/w)) in complex proteomes. Finally, this ligand-directed chemistry was successfully applied to label active MMP-12 secreted by eukaryote cells. We believe that this approach could be transferred more widely to many other metalloproteases, thus contributing to tackle their unresolved proteomic profiling in vivo.
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Affiliation(s)
- Monika Kaminska
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Pierrick Bruyat
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Carole Malgorn
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Marion Doladilhe
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Evelyne Cassar-Lajeunesse
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Carole Fruchart Gaillard
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Mélissa De Souza
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Fabrice Beau
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Robert Thai
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Isabelle Correia
- CNRS, Laboratoire des Biomolécules, LBM, Sorbonne Université, Ecole Normale Supérieure, PSL University, 75005, Paris, France
| | - Andrzej Galat
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Dimitris Georgiadis
- Department of Chemistry, Laboratory of Organic Chemistry, University of Athens, Panepistimiopolis, Zografou, 15771 Athens, Greece
| | - Olivier Lequin
- CNRS, Laboratoire des Biomolécules, LBM, Sorbonne Université, Ecole Normale Supérieure, PSL University, 75005, Paris, France
| | - Vincent Dive
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Sarah Bregant
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Laurent Devel
- Université Paris-Saclay, CEA, INRAE, Medicaments et Technologies pour la Sante (MTS), SIMoS, 91191, Gif-sur-Yvette, France
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8
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Marcelot A, Petitalot A, Ropars V, Le Du MH, Samson C, Dubois S, Hoffmann G, Miron S, Cuniasse P, Marquez JA, Thai R, Theillet FX, Zinn-Justin S. Di-phosphorylated BAF shows altered structural dynamics and binding to DNA, but interacts with its nuclear envelope partners. Nucleic Acids Res 2021; 49:3841-3855. [PMID: 33744941 PMCID: PMC8053085 DOI: 10.1093/nar/gkab184] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 02/05/2021] [Accepted: 03/06/2021] [Indexed: 02/07/2023] Open
Abstract
Barrier-to-autointegration factor (BAF), encoded by the BANF1 gene, is an abundant and ubiquitously expressed metazoan protein that has multiple functions during the cell cycle. Through its ability to cross-bridge two double-stranded DNA (dsDNA), it favours chromosome compaction, participates in post-mitotic nuclear envelope reassembly and is essential for the repair of large nuclear ruptures. BAF forms a ternary complex with the nuclear envelope proteins lamin A/C and emerin, and its interaction with lamin A/C is defective in patients with recessive accelerated aging syndromes. Phosphorylation of BAF by the vaccinia-related kinase 1 (VRK1) is a key regulator of BAF localization and function. Here, we demonstrate that VRK1 successively phosphorylates BAF on Ser4 and Thr3. The crystal structures of BAF before and after phosphorylation are extremely similar. However, in solution, the extensive flexibility of the N-terminal helix α1 and loop α1α2 in BAF is strongly reduced in di-phosphorylated BAF, due to interactions between the phosphorylated residues and the positively charged C-terminal helix α6. These regions are involved in DNA and lamin A/C binding. Consistently, phosphorylation causes a 5000-fold loss of affinity for dsDNA. However, it does not impair binding to lamin A/C Igfold domain and emerin nucleoplasmic region, which leaves open the question of the regulation of these interactions.
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Affiliation(s)
- Agathe Marcelot
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, France
| | - Ambre Petitalot
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, France
| | - Virginie Ropars
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, France
| | - Marie-Hélène Le Du
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, France
| | - Camille Samson
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, France
| | | | - Guillaume Hoffmann
- High Throughput Crystallization Lab, EMBL Grenoble Outstation, Grenoble Cedex, France
| | - Simona Miron
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, France
| | - Philippe Cuniasse
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, France
| | - Jose Antonio Marquez
- High Throughput Crystallization Lab, EMBL Grenoble Outstation, Grenoble Cedex, France
| | | | - François-Xavier Theillet
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, France
| | - Sophie Zinn-Justin
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette Cedex, France
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9
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Canu N, Tellier C, Babin M, Thai R, Ajel I, Seguin J, Cinquin O, Vinck R, Moutiez M, Belin P, Cintrat JC, Gondry M. Flexizyme-aminoacylated shortened tRNAs demonstrate that only the aminoacylated acceptor arms of the two tRNA substrates are required for cyclodipeptide synthase activity. Nucleic Acids Res 2021; 48:11615-11625. [PMID: 33095883 PMCID: PMC7672478 DOI: 10.1093/nar/gkaa903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/22/2020] [Accepted: 09/30/2020] [Indexed: 01/15/2023] Open
Abstract
Cyclodipeptide synthases (CDPSs) use two aminoacyl-tRNAs (AA-tRNAs) to catalyse cyclodipeptide formation in a ping-pong mechanism. Despite intense studies of these enzymes in past years, the tRNA regions of the two substrates required for CDPS activity are poorly documented, mainly because of two limitations. First, previously studied CDPSs use two identical AA-tRNAs to produce homocyclodipeptides, thus preventing the discriminative study of the binding of the two substrates. Second, the range of tRNA analogues that can be aminoacylated by aminoacyl-tRNA synthetases is limited. To overcome the limitations, we studied a new model CDPS that uses two different AA-tRNAs to produce an heterocyclodipeptide. We also developed a production pipeline for the production of purified shortened AA-tRNA analogues (AA-minitRNAs). This method combines the use of flexizymes to aminoacylate a diversity of minitRNAs and their subsequent purifications by anion-exchange chromatography. Finally, we were able to show that aminoacylated molecules mimicking the entire acceptor arms of tRNAs were as effective a substrate as entire AA-tRNAs, thereby demonstrating that the acceptor arms of the two substrates are the only parts of the tRNAs required for CDPS activity. The method developed in this study should greatly facilitate future investigations of the specificity of CDPSs and of other AA-tRNAs-utilizing enzymes.
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Affiliation(s)
- Nicolas Canu
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette cedex, France
| | - Carine Tellier
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette cedex, France
| | - Morgan Babin
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette cedex, France
| | - Robert Thai
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Inès Ajel
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette cedex, France
| | - Jérôme Seguin
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette cedex, France
| | - Olivier Cinquin
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette cedex, France.,Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Robin Vinck
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191, Gif-sur-Yvette, France.,Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Mireille Moutiez
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette cedex, France
| | - Pascal Belin
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette cedex, France
| | - Jean-Christophe Cintrat
- Université Paris Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SCBM, 91191 Gif-sur-Yvette, France
| | - Muriel Gondry
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette cedex, France
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10
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Salinas M, Kessler P, Douguet D, Sarraf D, Tonali N, Thai R, Servent D, Lingueglia E. Mambalgin-1 pain-relieving peptide locks the hinge between α4 and α5 helices to inhibit rat acid-sensing ion channel 1a. Neuropharmacology 2021; 185:108453. [PMID: 33450275 DOI: 10.1016/j.neuropharm.2021.108453] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 10/22/2020] [Revised: 12/04/2020] [Accepted: 01/05/2021] [Indexed: 10/22/2022]
Abstract
Acid-sensing ion channels (ASICs) are proton-gated cationic channels involved in pain and other processes, underscoring the potential therapeutic value of specific inhibitors such as the three-finger toxin mambalgin-1 (Mamb-1) from snake venom. A low-resolution structure of the human-ASIC1a/Mamb-1 complex obtained by cryo-electron microscopy has been recently reported, implementing the structure of the chicken-ASIC1/Mamb-1 complex previously published. Here we combine structure-activity relationship of both the rat ASIC1a channel and the Mamb-1 toxin with a molecular dynamics simulation to obtain a detailed picture at the level of side-chain interactions of the binding of Mamb-1 on rat ASIC1a channels and of its inhibition mechanism. Fingers I and II of Mamb-1 but not the core of the toxin are required for interaction with the thumb domain of ASIC1a, and Lys-8 of finger I potentially interacts with Tyr-358 in the thumb domain. Mamb-1 does not interfere directly with the pH sensor as previously suggested, but locks by several contacts a key hinge between α4 and α5 helices in the thumb domain of ASIC1a to prevent channel opening. Our results provide an improved model of inhibition of mammalian ASIC1a channels by Mamb-1 and clues for further development of optimized ASIC blockers.
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Affiliation(s)
- Miguel Salinas
- Université Côte d'Azur, CNRS, IPMC, LabEx ICST, FHU InovPain, France.
| | - Pascal Kessler
- Université Paris Saclay, CEA, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Dominique Douguet
- Université Côte d'Azur, CNRS, IPMC, LabEx ICST, FHU InovPain, France
| | - Daad Sarraf
- Université Paris Saclay, CEA, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Nicolo Tonali
- Université Paris Saclay, CEA, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191, Gif-sur-Yvette, France; CNRS, BioCIS, Université Paris-Saclay, 92290, Châtenay-Malabry, France
| | - Robert Thai
- Université Paris Saclay, CEA, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191, Gif-sur-Yvette, France
| | - Denis Servent
- Université Paris Saclay, CEA, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, 91191, Gif-sur-Yvette, France.
| | - Eric Lingueglia
- Université Côte d'Azur, CNRS, IPMC, LabEx ICST, FHU InovPain, France.
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11
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Dubois P, Correia I, Le Chevalier F, Dubois S, Jacques I, Canu N, Moutiez M, Thai R, Gondry M, Lequin O, Belin P. Author Correction: Reprogramming Escherichia coli for the production of prenylated indole diketopiperazine alkaloids. Sci Rep 2019; 9:15009. [PMID: 31611595 PMCID: PMC6791860 DOI: 10.1038/s41598-019-51404-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Pavlina Dubois
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | - Isabelle Correia
- Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules (LBM), 75005, Paris, France
| | - Fabien Le Chevalier
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | | | - Isabelle Jacques
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France.,Isabelle B. Jacques, APTEEUS, Institut Pasteur de Lille, Lille, France
| | - Nicolas Canu
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | - Mireille Moutiez
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | - Robert Thai
- SIMOPRO, CEA, 91198, Gif-sur-Yvette, cedex, France
| | - Muriel Gondry
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | - Olivier Lequin
- Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules (LBM), 75005, Paris, France.
| | - Pascal Belin
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France.
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12
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Dubois P, Correia I, Le Chevalier F, Dubois S, Jacques I, Canu N, Moutiez M, Thai R, Gondry M, Lequin O, Belin P. Reprogramming Escherichia coli for the production of prenylated indole diketopiperazine alkaloids. Sci Rep 2019; 9:9208. [PMID: 31239480 PMCID: PMC6592928 DOI: 10.1038/s41598-019-45519-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 06/05/2019] [Indexed: 11/09/2022] Open
Abstract
Prenylated indole diketopiperazine (DKP) alkaloids are important bioactive molecules or their precursors. In the context of synthetic biology, efficient means for their biological production would increase their chemical diversification and the discovery of novel bioactive compounds. Here, we prove the suitability of the Escherichia coli chassis for the production of prenylated indole DKP alkaloids. We used enzyme combinations not found in nature by co-expressing bacterial cyclodipeptide synthases (CDPSs) that assemble the DKP ring and fungal prenyltransferases (PTs) that transfer the allylic moiety from the dimethylallyl diphosphate (DMAPP) to the indole ring of tryptophanyl-containing cyclodipeptides. Of the 11 tested combinations, seven resulted in the production of eight different prenylated indole DKP alkaloids as determined by LC-MS/MS and NMR characterization. Two were previously undescribed. Engineering E. coli by introducing a hybrid mevalonate pathway for increasing intracellular DMAPP levels improved prenylated indole DKP alkaloid production. Purified product yields of 2–26 mg/L per culture were obtained from culture supernatants. Our study paves the way for the bioproduction of novel prenylated indole DKP alkaloids in a tractable chassis that can exploit the cyclodipeptide diversity achievable with CDPSs and the numerous described PT activities.
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Affiliation(s)
- Pavlina Dubois
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | - Isabelle Correia
- Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules (LBM), 75005, Paris, France
| | - Fabien Le Chevalier
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | | | - Isabelle Jacques
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France.,Isabelle B. Jacques, APTEEUS, Institut Pasteur de Lille, Lille, France
| | - Nicolas Canu
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | - Mireille Moutiez
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | - Robert Thai
- SIMOPRO, CEA, 91198, Gif-sur-Yvette, cedex, France
| | - Muriel Gondry
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France
| | - Olivier Lequin
- Sorbonne Université, Ecole Normale Supérieure, PSL University, CNRS, Laboratoire des Biomolécules (LBM), 75005, Paris, France.
| | - Pascal Belin
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, 91198, Gif-sur-Yvette, cedex, France.
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13
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Canu N, Belin P, Thai R, Correia I, Lequin O, Seguin J, Moutiez M, Gondry M. Incorporation of Non-canonical Amino Acids into 2,5-Diketopiperazines by Cyclodipeptide Synthases. Angew Chem Int Ed Engl 2018; 57:3118-3122. [DOI: 10.1002/anie.201712536] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Indexed: 01/22/2023]
Affiliation(s)
- Nicolas Canu
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Pascal Belin
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Robert Thai
- SIMOPRO; CEA-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Isabelle Correia
- Sorbonne Université; Ecole Normale Supérieure; PSL University; CNRS; Laboratoire des Biomolécules (LBM); 75005 Paris France
| | - Olivier Lequin
- Sorbonne Université; Ecole Normale Supérieure; PSL University; CNRS; Laboratoire des Biomolécules (LBM); 75005 Paris France
| | - Jérôme Seguin
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Mireille Moutiez
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Muriel Gondry
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
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14
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Canu N, Belin P, Thai R, Correia I, Lequin O, Seguin J, Moutiez M, Gondry M. Incorporation of Non-canonical Amino Acids into 2,5-Diketopiperazines by Cyclodipeptide Synthases. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712536] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Nicolas Canu
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Pascal Belin
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Robert Thai
- SIMOPRO; CEA-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Isabelle Correia
- Sorbonne Université; Ecole Normale Supérieure; PSL University; CNRS; Laboratoire des Biomolécules (LBM); 75005 Paris France
| | - Olivier Lequin
- Sorbonne Université; Ecole Normale Supérieure; PSL University; CNRS; Laboratoire des Biomolécules (LBM); 75005 Paris France
| | - Jérôme Seguin
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Mireille Moutiez
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
| | - Muriel Gondry
- Institute for Integrated Biology of the Cell (I2BC); CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay; 91198 Gif-sur-Yvette cedex France
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15
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Gondry M, Jacques IB, Thai R, Babin M, Canu N, Seguin J, Belin P, Pernodet JL, Moutiez M. A Comprehensive Overview of the Cyclodipeptide Synthase Family Enriched with the Characterization of 32 New Enzymes. Front Microbiol 2018; 9:46. [PMID: 29483897 PMCID: PMC5816076 DOI: 10.3389/fmicb.2018.00046] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 01/09/2018] [Indexed: 11/13/2022] Open
Abstract
Cyclodipeptide synthases (CDPSs) use as substrates two amino acids activated as aminoacyl-tRNAs to synthesize cyclodipeptides in secondary metabolites biosynthetic pathways. Since the first description of a CDPS in 2002, the number of putative CDPSs in databases has increased exponentially, reaching around 800 in June 2017. They are likely to be involved in numerous biosynthetic pathways but the diversity of their products is still under-explored. Here, we describe the activity of 32 new CDPSs, bringing the number of experimentally characterized CDPSs to about 100. We detect 16 new cyclodipeptides, one of which containing an arginine which has never been observed previously. This brings to 75 the number of cyclodipeptides formed by CDPSs out of the possible 210 natural ones. We also identify several consensus sequences related to the synthesis of a specific cyclodipeptide, improving the predictive model of CDPS specificity. The improved prediction method enables to propose the main product synthesized for about 80% of the CDPS sequences available in databases and opens the way for the deciphering of CDPS-dependent pathways. Analysis of phylum distribution and predicted activity for all CDPSs identified in databases shows that the experimentally characterized set is representative of the whole family. Our work also demonstrates that some cyclodipeptides, precursors of diketopiperazines with interesting pharmacological properties and previously described as being synthesized by fungal non-ribosomal peptide synthetases, can also be produced by CDPSs in bacteria.
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Affiliation(s)
- Muriel Gondry
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Isabelle B Jacques
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Robert Thai
- SIMOPRO, Institut Frédéric Joliot, CEA-Saclay, Gif-sur-Yvette, France
| | - Morgan Babin
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Nicolas Canu
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Jérôme Seguin
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Pascal Belin
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Jean-Luc Pernodet
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Mireille Moutiez
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Univ. Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
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Decuypère E, Riomet M, Sallustrau A, Bregant S, Thai R, Pieters G, Clavier G, Audisio D, Taran F. Sydnone-coumarins as clickable turn-on fluorescent sensors for molecular imaging. Chem Commun (Camb) 2018; 54:10758-10761. [DOI: 10.1039/c8cc06070c] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Sydnone-coumarin compounds are interesting turn-on fluorogenic probes for protein labeling.
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Affiliation(s)
- Elodie Decuypère
- Service de Chimie Bio-organique et Marquage DRF-JOLIOT-SCBM
- CEA
- Université Paris-Saclay
- 91191 Gif-sur-Yvette
- France
| | - Margaux Riomet
- Service de Chimie Bio-organique et Marquage DRF-JOLIOT-SCBM
- CEA
- Université Paris-Saclay
- 91191 Gif-sur-Yvette
- France
| | - Antoine Sallustrau
- Service de Chimie Bio-organique et Marquage DRF-JOLIOT-SCBM
- CEA
- Université Paris-Saclay
- 91191 Gif-sur-Yvette
- France
| | - Sarah Bregant
- Service d'Ingénierie Moléculaire des Protéines DRF-JOLIOT-SIMOPRO, CEA
- Université Paris-Saclay
- 91191 Gif-sur-Yvette
- France
| | - Robert Thai
- Service d'Ingénierie Moléculaire des Protéines DRF-JOLIOT-SIMOPRO, CEA
- Université Paris-Saclay
- 91191 Gif-sur-Yvette
- France
| | - Grégory Pieters
- Service de Chimie Bio-organique et Marquage DRF-JOLIOT-SCBM
- CEA
- Université Paris-Saclay
- 91191 Gif-sur-Yvette
- France
| | - Gilles Clavier
- PPSM, ENS Cachan
- CNRS
- Université Paris-Saclay
- 94235 Cachan
- France
| | - Davide Audisio
- Service de Chimie Bio-organique et Marquage DRF-JOLIOT-SCBM
- CEA
- Université Paris-Saclay
- 91191 Gif-sur-Yvette
- France
| | - Frédéric Taran
- Service de Chimie Bio-organique et Marquage DRF-JOLIOT-SCBM
- CEA
- Université Paris-Saclay
- 91191 Gif-sur-Yvette
- France
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17
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Gaullier G, Miron S, Pisano S, Buisson R, Le Bihan YV, Tellier-Lebègue C, Messaoud W, Roblin P, Guimarães BG, Thai R, Giraud-Panis MJ, Gilson E, Le Du MH. A higher-order entity formed by the flexible assembly of RAP1 with TRF2. Nucleic Acids Res 2016; 44:1962-76. [PMID: 26748096 PMCID: PMC4770236 DOI: 10.1093/nar/gkv1531] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Accepted: 12/21/2015] [Indexed: 11/13/2022] Open
Abstract
Telomere integrity is essential to maintain genome stability, and telomeric dysfunctions are associated with cancer and aging pathologies. In human, the shelterin complex binds TTAGGG DNA repeats and provides capping to chromosome ends. Within shelterin, RAP1 is recruited through its interaction with TRF2, and TRF2 is required for telomere protection through a network of nucleic acid and protein interactions. RAP1 is one of the most conserved shelterin proteins although one unresolved question is how its interaction may influence TRF2 properties and regulate its capacity to bind multiple proteins. Through a combination of biochemical, biophysical and structural approaches, we unveiled a unique mode of assembly between RAP1 and TRF2. The complete interaction scheme between the full-length proteins involves a complex biphasic interaction of RAP1 that directly affects the binding properties of the assembly. These results reveal how a non-DNA binding protein can influence the properties of a DNA-binding partner by mutual conformational adjustments.
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Affiliation(s)
- Guillaume Gaullier
- Department of Biochemistry, Biophysics and Structural Biology, Institute for Integrative Biology of the Cell (I2BC), CEA, UMR 9198 CNRS, Université Paris-Sud, Batiment 144, CEA Saclay, Gif-sur-Yvette, F-91191, France
| | - Simona Miron
- Department of Biochemistry, Biophysics and Structural Biology, Institute for Integrative Biology of the Cell (I2BC), CEA, UMR 9198 CNRS, Université Paris-Sud, Batiment 144, CEA Saclay, Gif-sur-Yvette, F-91191, France
| | - Sabrina Pisano
- Institute for Research on Cancer and Aging, Nice (IRCAN); CNRS UMR7284/INSERM U1081; Faculty of Medicine; Nice, 06107, France
| | - Rémi Buisson
- Institute for Research on Cancer and Aging, Nice (IRCAN); CNRS UMR7284/INSERM U1081; Faculty of Medicine; Nice, 06107, France
| | - Yann-Vaï Le Bihan
- Department of Biochemistry, Biophysics and Structural Biology, Institute for Integrative Biology of the Cell (I2BC), CEA, UMR 9198 CNRS, Université Paris-Sud, Batiment 144, CEA Saclay, Gif-sur-Yvette, F-91191, France
| | - Carine Tellier-Lebègue
- Department of Biochemistry, Biophysics and Structural Biology, Institute for Integrative Biology of the Cell (I2BC), CEA, UMR 9198 CNRS, Université Paris-Sud, Batiment 144, CEA Saclay, Gif-sur-Yvette, F-91191, France
| | - Wala Messaoud
- Department of Biochemistry, Biophysics and Structural Biology, Institute for Integrative Biology of the Cell (I2BC), CEA, UMR 9198 CNRS, Université Paris-Sud, Batiment 144, CEA Saclay, Gif-sur-Yvette, F-91191, France
| | - Pierre Roblin
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin BP 48, 91192 GIF-SUR-YVETTE Cedex, France Institut National de la Recherche Agronomique, Unité Biopolymères, Interactions, Assemblages, 44316 Nantes, France
| | - Beatriz G Guimarães
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin BP 48, 91192 GIF-SUR-YVETTE Cedex, France
| | - Robert Thai
- CEA, iBiTecS, F-91191 Gif-sur-Yvette, France
| | - Marie-Josèphe Giraud-Panis
- Institute for Research on Cancer and Aging, Nice (IRCAN); CNRS UMR7284/INSERM U1081; Faculty of Medicine; Nice, 06107, France
| | - Eric Gilson
- Institute for Research on Cancer and Aging, Nice (IRCAN); CNRS UMR7284/INSERM U1081; Faculty of Medicine; Nice, 06107, France Department of Genetics, CHU; Nice, 06107, France
| | - Marie-Hélène Le Du
- Department of Biochemistry, Biophysics and Structural Biology, Institute for Integrative Biology of the Cell (I2BC), CEA, UMR 9198 CNRS, Université Paris-Sud, Batiment 144, CEA Saclay, Gif-sur-Yvette, F-91191, France
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Moutiez M, Schmitt E, Seguin J, Thai R, Favry E, Belin P, Mechulam Y, Gondry M. Unravelling the mechanism of non-ribosomal peptide synthesis by cyclodipeptide synthases. Nat Commun 2014; 5:5141. [DOI: 10.1038/ncomms6141] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Accepted: 09/02/2014] [Indexed: 11/09/2022] Open
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Buache E, Thai R, Wendling C, Alpy F, Page A, Chenard MP, Dive V, Ruff M, Dejaegere A, Tomasetto C, Rio MC. Functional relationship between matrix metalloproteinase-11 and matrix metalloproteinase-14. Cancer Med 2014; 3:1197-210. [PMID: 25081520 PMCID: PMC4302670 DOI: 10.1002/cam4.290] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 04/16/2014] [Accepted: 05/31/2014] [Indexed: 01/14/2023] Open
Abstract
MMP-11 is a key factor in physiopathological tissue remodeling. As an active form is secreted, its activity must be tightly regulated to avoid detrimental effects. Although TIMP-1 and TIMP-2 reversibly inhibit MMP-11, another more drastic scenario, presumably via hydrolysis, could be hypothesized. In this context, we have investigated the possible implication of MMP-14, since it exhibits a spatiotemporal localization similar to MMP-11. Using native HFL1-produced MMP-11 and HT-1080-produced MMP-14 as well as recombinant proteins, we show that MMP-11 is a MMP-14 substrate. MMP-14 cleaves MMP-11 catalytic domain at the PGG(P1)-I(P1′)LA and V/IQH(P1)-L(P1′)YG scissile bonds, two new cleavage sites. Interestingly, a functional test showed a dramatical reduction in MMP-11 enzymatic activity when incubated with active MMP-14, whereas inactive point-mutated MMP-14 had no effect. This function is conserved between human and mouse. Thus, in addition to the canonical reversible TIMP-dependent inhibitory system, irreversible MMP proteolytic inactivation might occur by cleavage of the catalytic domain in a MMP-dependent manner. Since MMP-14 is produced by HT-1080 cancer cells, whereas MMP-11 is secreted by HFL1 stromal cells, our findings support the emerging importance of tumor-stroma interaction/cross-talk. Moreover, they highlight a Janus-faced MMP-14 function in the MMP cascade, favoring activation of several pro-MMPs, but limiting MMP-11 activity. Finally, both MMPs are active at the cell periphery. Since MMP-14 is present at the cell membrane, whereas MMP-11 is soluble into the cellular microenvironment, this MMP-14 function might represent one critical regulatory mechanism to control the extent of pericellular MMP-11 bioavailability and protect cells from excessive/inappropriate MMP-11 function.
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Affiliation(s)
- Emilie Buache
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Department of Functional Genomics and Cancer, CNRS UMR 7104, INSERM U964, Université de Strasbourg, Illkirch, France
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Galat A, Thai R. Rapamycin-binding FKBP25 associates with diverse proteins that form large intracellular entities. Biochem Biophys Res Commun 2014; 450:1255-60. [DOI: 10.1016/j.bbrc.2014.06.105] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 06/22/2014] [Indexed: 11/25/2022]
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21
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Galat A, Thai R, Stura EA. Diversified targets of FKBP25 and its complex with rapamycin. Int J Biol Macromol 2014; 69:344-52. [DOI: 10.1016/j.ijbiomac.2014.05.060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 05/21/2014] [Accepted: 05/21/2014] [Indexed: 01/19/2023]
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Nguyen B, Caer JPL, Mourier G, Thai R, Lamthanh H, Servent D, Benoit E, Molgó J. Characterization of a novel Conus bandanus conopeptide belonging to the M-superfamily containing bromotryptophan. Mar Drugs 2014; 12:3449-65. [PMID: 24905483 PMCID: PMC4071585 DOI: 10.3390/md12063449] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 03/07/2014] [Accepted: 05/22/2014] [Indexed: 01/29/2023] Open
Abstract
A novel conotoxin (conopeptide) was biochemically characterized from the crude venom of the molluscivorous marine snail, Conus bandanus (Hwass in Bruguière, 1792), collected in the south-central coast of Vietnam. The peptide was identified by screening bromotryptophan from chromatographic fractions of the crude venom. Tandem mass spectrometry techniques were used to detect and localize different post-translational modifications (PTMs) present in the BnIIID conopeptide. The sequence was confirmed by Edman’s degradation and mass spectrometry revealing that the purified BnIIID conopeptide had 15 amino acid residues, with six cysteines at positions 1, 2, 7, 11, 13, and 14, and three PTMs: bromotryptophan, γ-carboxy glutamate, and amidated aspartic acid, at positions “4”, “5”, and “15”, respectively. The BnIIID peptide was synthesized for comparison with the native peptide. Homology comparison with conopeptides having the III-cysteine framework (–CCx1x2x3x4Cx1x2x3Cx1CC–) revealed that BnIIID belongs to the M-1 family of conotoxins. This is the first report of a member of the M-superfamily containing bromotryptophan as PTM.
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Affiliation(s)
- Bao Nguyen
- Neurobiology and Development Laboratory, Research Unit # 3294, Institute of Neurobiology Alfred Fessard # 2118, National Center for Scientific Research, Gif sur Yvette Cedex 91198, France.
| | - Jean-Pierre Le Caer
- Research Unit # 2301, Natural Product Chemistry Institute, National Center for Scientific Research, Gif sur Yvette Cedex 91198, France.
| | - Gilles Mourier
- Molecular Engineering of Proteins, Institute of Biology and Technology Saclay, Atomic Energy Commission, Gif sur Yvette Cedex 91191, France.
| | - Robert Thai
- Molecular Engineering of Proteins, Institute of Biology and Technology Saclay, Atomic Energy Commission, Gif sur Yvette Cedex 91191, France.
| | - Hung Lamthanh
- Neurobiology and Development Laboratory, Research Unit # 3294, Institute of Neurobiology Alfred Fessard # 2118, National Center for Scientific Research, Gif sur Yvette Cedex 91198, France.
| | - Denis Servent
- Molecular Engineering of Proteins, Institute of Biology and Technology Saclay, Atomic Energy Commission, Gif sur Yvette Cedex 91191, France.
| | - Evelyne Benoit
- Neurobiology and Development Laboratory, Research Unit # 3294, Institute of Neurobiology Alfred Fessard # 2118, National Center for Scientific Research, Gif sur Yvette Cedex 91198, France.
| | - Jordi Molgó
- Neurobiology and Development Laboratory, Research Unit # 3294, Institute of Neurobiology Alfred Fessard # 2118, National Center for Scientific Research, Gif sur Yvette Cedex 91198, France.
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Nguyen B, Aráoz R, Mourier G, Le Caer J, Thai R, Lamthanh H, Gallard J, Servent D, Benoit E, Khuc T, Ngo D, Molgó J. Characterization of a novel alpha-conotoxin BnI from Conus bandanus venom. Toxicon 2013. [DOI: 10.1016/j.toxicon.2013.08.044] [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: 11/15/2022]
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Fonvielle M, Le Du MH, Lequin O, Lecoq A, Jacquet M, Thai R, Dubois S, Grach G, Gondry M, Belin P. Substrate and reaction specificity of Mycobacterium tuberculosis cytochrome P450 CYP121: insights from biochemical studies and crystal structures. J Biol Chem 2013; 288:17347-59. [PMID: 23620594 DOI: 10.1074/jbc.m112.443853] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cytochrome P450 CYP121 is essential for the viability of Mycobacterium tuberculosis. Studies in vitro show that it can use the cyclodipeptide cyclo(l-Tyr-l-Tyr) (cYY) as a substrate. We report an investigation of the substrate and reaction specificities of CYP121 involving analysis of the interaction between CYP121 and 14 cYY analogues with various modifications of the side chains or the diketopiperazine (DKP) ring. Spectral titration experiments show that CYP121 significantly bound only cyclodipeptides with a conserved DKP ring carrying two aryl side chains in l-configuration. CYP121 did not efficiently or selectively transform any of the cYY analogues tested, indicating a high specificity for cYY. The molecular determinants of this specificity were inferred from both crystal structures of CYP121-analog complexes solved at high resolution and solution NMR spectroscopy of the analogues. Bound cYY or its analogues all displayed a similar set of contacts with CYP121 residues Asn(85), Phe(168), and Trp(182). The propensity of the cYY tyrosyl to point toward Arg(386) was dependent on the presence of the DKP ring that limits the conformational freedom of the ligand. The correct positioning of the hydroxyl of this tyrosyl was essential for conversion of cYY. Thus, the specificity of CYP121 results from both a restricted binding specificity and a fine-tuned P450 substrate relationship. These results document the catalytic mechanism of CYP121 and improve our understanding of its function in vivo. This work contributes to progress toward the design of inhibitors of this essential protein of M. tuberculosis that could be used for antituberculosis therapy.
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Affiliation(s)
- Matthieu Fonvielle
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA), iBiTec-S, Service d'Ingénierie Moléculaire des Protéines, 91191 Gif-sur-Yvette Cedex, France
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Clavaud C, Gal JL, Thai R, Dugave C. Implication of cysteine residues in the selection of oxorhenium inhibitors of cyclophilin hCyp18. Metallomics 2012; 4:179-87. [DOI: 10.1039/c2mt00160h] [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: 11/21/2022]
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Rouget C, Quinton L, Maïga A, Gales C, Masuyer G, Malosse C, Chamot-Rooke J, Thai R, Mourier G, De Pauw E, Gilles N, Servent D. Identification of a novel snake peptide toxin displaying high affinity and antagonist behaviour for the α2-adrenoceptors. Br J Pharmacol 2011; 161:1361-74. [PMID: 20659106 DOI: 10.1111/j.1476-5381.2010.00966.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND AND PURPOSE Muscarinic and adrenergic G protein-coupled receptors (GPCRs) are the targets of rare peptide toxins isolated from snake or cone snail venoms. We used a screen to identify novel toxins from Dendroaspis angusticeps targeting aminergic GPCRs. These toxins may offer new candidates for the development of new tools and drugs. EXPERIMENTAL APPROACH In binding experiments with (3) H-rauwolscine, we studied the interactions of green mamba venom fractions with α(2) -adrenoceptors from rat brain synaptosomes. We isolated, sequenced and chemically synthesized a novel peptide, ρ-Da1b. This peptide was pharmacologically characterized using binding experiments and functional tests on human α(2)-adrenoceptors expressed in mammalian cells. KEY RESULTS ρ-Da1b, a 66-amino acid peptide stabilized by four disulphide bridges, belongs to the three-finger-fold peptide family. Its synthetic homologue inhibited 80% of (3) H-rauwolscine binding to the three α(2)-adrenoceptor subtypes, with an affinity between 14 and 73 nM and Hill slopes close to unity. Functional experiments on α(2A) -adrenoceptor demonstrated that ρ-Da1b is an antagonist, shifting adrenaline activation curves to the right. Schild regression revealed slopes of 0.97 and 0.67 and pA(2) values of 5.93 and 5.32 for yohimbine and ρ-Da1b, respectively. CONCLUSIONS AND IMPLICATIONS ρ-Da1b is the first toxin identified to specifically interact with α(2)-adrenoceptors, extending the list of class A GPCRs sensitive to toxins. Additionally, its affinity and atypical mode of interaction open up the possibility of its use as a new pharmacological tool, in the study of the physiological roles of α(2)-adrenoceptor subtypes.
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Affiliation(s)
- Céline Rouget
- CEA, iBiTec-S, Service d'Ingénierie Moléculaire des Protéines, Gif sur Yvette, France
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Aufort M, Gonera M, Le Gal J, Czarny B, Le Clainche L, Thai R, Dugave C. Cover Picture: Oxorhenium-Mediated Assembly of Noncyclic Selective Integrin Antagonists: A Combinatorial Approach (ChemBioChem 4/2011). Chembiochem 2011. [DOI: 10.1002/cbic.201190010] [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: 11/05/2022]
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Aufort M, Gonera M, Le Gal J, Czarny B, Le Clainche L, Thai R, Dugave C. Oxorhenium-Mediated Assembly of Noncyclic Selective Integrin Antagonists: A Combinatorial Approach. Chembiochem 2011; 12:583-92. [DOI: 10.1002/cbic.201000700] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Indexed: 11/11/2022]
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Sauguet L, Moutiez M, Li Y, Belin P, Seguin J, Le Du MH, Thai R, Masson C, Fonvielle M, Pernodet JL, Charbonnier JB, Gondry M. Cyclodipeptide synthases, a family of class-I aminoacyl-tRNA synthetase-like enzymes involved in non-ribosomal peptide synthesis. Nucleic Acids Res 2011; 39:4475-89. [PMID: 21296757 PMCID: PMC3105412 DOI: 10.1093/nar/gkr027] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Cyclodipeptide synthases (CDPSs) belong to a newly defined family of enzymes that use aminoacyl-tRNAs (aa-tRNAs) as substrates to synthesize the two peptide bonds of various cyclodipeptides, which are the precursors of many natural products with noteworthy biological activities. Here, we describe the crystal structure of AlbC, a CDPS from Streptomyces noursei. The AlbC structure consists of a monomer containing a Rossmann-fold domain. Strikingly, it is highly similar to the catalytic domain of class-I aminoacyl-tRNA synthetases (aaRSs), especially class-Ic TyrRSs and TrpRSs. AlbC contains a deep pocket, highly conserved among CDPSs. Site-directed mutagenesis studies indicate that this pocket accommodates the aminoacyl moiety of the aa-tRNA substrate in a way similar to that used by TyrRSs to recognize their tyrosine substrates. These studies also suggest that the tRNA moiety of the aa-tRNA interacts with AlbC via at least one patch of basic residues, which is conserved among CDPSs but not present in class-Ic aaRSs. AlbC catalyses its two-substrate reaction via a ping-pong mechanism with a covalent intermediate in which l-Phe is shown to be transferred from Phe-tRNAPhe to an active serine. These findings provide insight into the molecular bases of the interactions between CDPSs and their aa-tRNAs substrates, and the catalytic mechanism used by CDPSs to achieve the non-ribosomal synthesis of cyclodipeptides.
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Affiliation(s)
- Ludovic Sauguet
- CEA, IBITECS, Service d'Ingénierie Moléculaire des Protéines, F-91191 Gif-sur-Yvette, France
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Mousseau G, Raffy Q, Thomas OP, Agez M, Thai R, Renault JP, Pin S, Ochsenbein F, Cintrat JC, Rousseau B. Footprinting of protein interactions by tritium labeling. Biochemistry 2010; 49:4297-9. [PMID: 20415454 DOI: 10.1021/bi100031a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new footprinting method for mapping protein interactions has been developed, using tritium as a radioactive label. As residues involved in an interaction are less labeled when the complex is formed, they can be identified via comparison of the tritium incorporation of each residue of the bound protein with that of the unbound one. Application of this footprinting method to the complex formed by the histone H3 fragment H3(122-135) and the protein hAsf1A(1-156) afforded data in good agreement with NMR results.
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Quinton L, Girard E, Maiga A, Rekik M, Lluel P, Masuyer G, Larregola M, Marquer C, Ciolek J, Magnin T, Wagner R, Molgó J, Thai R, Fruchart-Gaillard C, Mourier G, Chamot-Rooke J, Ménez A, Palea S, Servent D, Gilles N. Isolation and pharmacological characterization of AdTx1, a natural peptide displaying specific insurmountable antagonism of the alpha1A-adrenoceptor. Br J Pharmacol 2009; 159:316-25. [PMID: 20015090 DOI: 10.1111/j.1476-5381.2009.00532.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND AND PURPOSE Venoms are a rich source of ligands for ion channels, but very little is known about their capacity to modulate G-protein coupled receptor (GPCR) activity. We developed a strategy to identify novel toxins targeting GPCRs. EXPERIMENTAL APPROACH We studied the interactions of mamba venom fractions with alpha(1)-adrenoceptors in binding experiments with (3)H-prazosin. The active peptide (AdTx1) was sequenced by Edman degradation and mass spectrometry fragmentation. Its synthetic homologue was pharmacologically characterized by binding experiments using cloned receptors and by functional experiments on rabbit isolated prostatic smooth muscle. KEY RESULTS AdTx1, a 65 amino-acid peptide stabilized by four disulphide bridges, belongs to the three-finger-fold peptide family. It has subnanomolar affinity (K(i)= 0.35 nM) and high specificity for the human alpha(1A)-adrenoceptor subtype. We showed high selectivity and affinity (K(d)= 0.6 nM) of radio-labelled AdTx1 in direct binding experiments and revealed a slow association constant (k(on)= 6 x 10(6).M(-1).min(-1)) with an unusually stable alpha(1A)-adrenoceptor/AdTx1 complex (t(1/2diss)= 3.6 h). AdTx1 displayed potent insurmountable antagonism of phenylephrine's actions in vitro (rabbit isolated prostatic muscle) at concentrations of 10 to 100 nM. CONCLUSIONS AND IMPLICATIONS AdTx1 is the most specific and selective peptide inhibitor for the alpha(1A)-adrenoceptor identified to date. It displays insurmountable antagonism, acting as a potent relaxant of smooth muscle. Its peptidic nature can be exploited to develop new tools, as a radio-labelled-AdTx1 or a fluoro-labelled-AdTx1. Identification of AdTx1 thus offers new perspectives for developing new drugs for treating benign prostatic hyperplasia.
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Affiliation(s)
- L Quinton
- Laboratoire des Mécanismes Réactionnels, Ecole Polytechnique, Palaiseau, France
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Bregant S, Huillet C, Devel L, Dabert-Gay AS, Beau F, Thai R, Czarny B, Yiotakis A, Dive V. Detection of matrix metalloproteinase active forms in complex proteomes: evaluation of affinity versus photoaffinity capture. J Proteome Res 2009; 8:2484-94. [PMID: 19271733 DOI: 10.1021/pr801069c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Various attempts to detect matrix metalloproteinase (MMP) active forms from complex proteomes, based on the use of specific photoactivatable affinity probes, have up to now failed. To overcome this failure, an affinity approach has been evaluated as an alternative to the photoaffinity one. For this purpose, two probes were synthesized to interact specifically with the active site of MMPs and allow isolation of MMP/probe complexes on magnetic beads through a biotin linker. Using phosphinic peptide chemistry, we prepared an affinity probe displaying picomolar potency toward several MMPs, and a related photoaffinity probe incorporating a photoactivatable azido group exhibiting subnanomolar affinity toward these targets. By a combination of silver-staining detection and MALDI peptide mass fingerprints, a systematic comparison was made of both strategies in terms of hMMP-12 and hMMP-8 recovery and identification when present in mixtures of different complexity. The results obtained show that the affinity protocol is superior to the photoaffinity strategy in terms of quantity of captured MMPs and number of MMP tryptic fragments detected in MALDI-MS. The specificity and efficiency of the affinity capture protocol developed in this study allowed easy, fast, and unambiguous detection by MALDI-MS of three hMMPs (2, 8, and 12), from a single affinity capture experiment, when added (10-36 ng of MMPs) to a tumor extract (10 microg). Thus, the tools and approaches reported should enable us to progress in the detection of endogenous active forms of MMPs in complex proteomes, an important objective with many diagnostic applications.
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Affiliation(s)
- Sarah Bregant
- CEA, iBiTecS, Service d'Ingénierie Moléculaire des Protéines (SIMOPRO), Bat 152, CE-Saclay Gif/Yvette, F-91191, France
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Dabert-Gay AS, Czarny B, Lajeunesse E, Thai R, Nagase H, Dive V. Covalent modification of matrix metalloproteinases by a photoaffinity probe: influence of nucleophilicity and flexibility of the residue in position 241. Bioconjug Chem 2009; 20:367-75. [PMID: 19138112 DOI: 10.1021/bc800478b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A photoaffinity probe, developed for the specific labeling of matrix metalloproteinase (MMP) active sites, was recently shown to covalently modify a single residue in human MMP-12, namely, Lys(241), by reacting selectively with the side chain epsilon-amino group of that residue. The residue in position 241 of MMPs is not conserved; thus, variability in this position may be responsible for the dispersion in cross-linking yield observed between MMPs when labeled by this photoaffinity probe. By studying the pH dependence of the labeling properties of this probe toward different MMPs (MMP-12, MMP-3, MMP-9, and various mutants of human MMP-12) and identifying the site of covalent modification of MMP-3 by this probe, our new data demonstrated that the nucleophilicity of the residue in position 241 plays a key role in determining the cross-linking yield of MMP modification by the probe. However, these studies also reveal that subtle additional structural parameters, including local conformation and flexibility, of the residue in position 241 should also be taken into consideration, a property adding a further degree of complexity in our understanding of the photolabeling probe reactivity and in designing optimal photoaffinity probes for performing functional proteomic studies of zinc proteinases like MMPs.
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Affiliation(s)
- Anne-Sophie Dabert-Gay
- CEA, iBiTecS, Service d'Ingenierie Moleculaire des Proteines (SIMOPRO), CE-Saclay Gif/Yvette, F-91191, France
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Dabert-Gay AS, Czarny B, Devel L, Beau F, Lajeunesse E, Bregant S, Thai R, Yiotakis A, Dive V. Molecular determinants of matrix metalloproteinase-12 covalent modification by a photoaffinity probe: insights into activity-based probe development and conformational variability of matrix metalloproteinases. J Biol Chem 2008; 283:31058-67. [PMID: 18775985 DOI: 10.1074/jbc.m805795200] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Mass spectroscopy, microsequencing, and site-directed mutagenesis studies have been performed to identify in human matrix metalloelastase (hMMP-12) residues covalently modified by a photoaffinity probe, previously shown to be able to covalently label specifically the active site of matrix metalloproteinases (MMPs). Results obtained led us to conclude that photoactivation of this probe in complex with hMMP-12 affects a single residue in human MMP-12, Lys(241), through covalent modification of its side chain epsilon NH(2) group. Because x-ray and NMR studies of hMMP-12 indicate that Lys(241) side chain is highly flexible, our data reveal the existence of particular Lys(241) side-chain conformation in which the epsilon NH(2) group points toward the photolabile group of the probe, an event explaining the high levels of cross-linking yield between hMMP-12 and the probe. Lys(241) is not conserved in MMPs, thus differences in cross-linking yields observed with this probe between MMP members may be linked to the residue variability observed at position 241 in this family.
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Affiliation(s)
- Anne-Sophie Dabert-Gay
- Service d'Ingénierie Moléculaire de Protéines, CE-Saclay, Gif/Yvette 91191, Cedex, France
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Clavaud C, Le Gal J, Thai R, Moutiez M, Dugave C. Dynamic Combinatorial Self‐Assembly of Cyclophilin hCyp‐18 Ligands through Oxorhenium Coordination. Chembiochem 2008; 9:1823-9. [DOI: 10.1002/cbic.200800187] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Lecoq A, Moine G, Bellanger L, Drevet P, Thai R, Lajeunesse E, Ménez A, Léonetti M. Increasing the humoral immunogenic properties of the HIV-1 Tat protein using a ligand-stabilizing strategy. Vaccine 2008; 26:2615-26. [PMID: 18394763 DOI: 10.1016/j.vaccine.2008.02.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2007] [Revised: 02/19/2008] [Accepted: 02/27/2008] [Indexed: 10/22/2022]
Abstract
Tat is regarded as an attractive target for the development of an AIDS vaccine. However, works suggest that Tat is a poorly immunogenic protein and therefore we attempted to increase its immunogenic potency. As we observed that Tat is highly sensitive to enzymatic degradation in vitro we tried to make it less susceptible to proteolysis using ligands. We complexed Tat101 with various sulfated sugars and observed that some of these ligands made the protein more resistant to proteolysis and more immunogenic. In a more thorough study, we observed that a low-molecular-weight heparin fragment, called Hep6000, altered both the cell-binding capacity and transactivating activity of Tat101, suggesting that this sulfated polysaccharide can make the protein less toxic. Sera raised against Tat101 and Tat101/Hep6000 similarly bound mainly to the N-terminal region of the protein, indicating that formation of the complex does not alter the B-cell immunodominant region. Anti-Tat101/Hep6000 antisera neutralized the transactivating activity of Tat101 more efficiently than anti-Tat101 antisera. Altogether, these results indicate that stabilization of Tat101 using sulfated sugars increases its immunogenicity and might be of value in increasing its vaccine efficacy.
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Affiliation(s)
- Alain Lecoq
- Commissariat de l'Energie Atomique, DSV, iBiTec-S, SIMOPRO, LCV, Gif-Sur-Yvette, France
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Mousseau G, Thomas OP, Oppilliart S, Coirier A, Salcedo-Serna A, Thai R, Beau F, Renault JP, Pin S, Cintrat JC, Rousseau B. Localization and Quantification of Carbon-Centered Radicals on Any Amino Acid of a Protein. Anal Chem 2007; 79:5444-8. [PMID: 17579484 DOI: 10.1021/ac070751k] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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
A general strategy to localize and quantify carbon-centered radicals within proteins is described. The methodology was first exemplified on amino acids and then on a peptide. This method is applicable to any protein system regardless of size, and the site of hydrogen abstraction by *OH on all residues within proteins is easily and accurately detected.
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Affiliation(s)
- G Mousseau
- CEA, iBiTec-S, Service de Chimie Bioorganique et de Marquage, Gif sur Yvette Cedex, France
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Guillemain G, Ma E, Mauger S, Miron S, Thai R, Guérois R, Ochsenbein F, Marsolier-Kergoat MC. Mechanisms of checkpoint kinase Rad53 inactivation after a double-strand break in Saccharomyces cerevisiae. Mol Cell Biol 2007; 27:3378-89. [PMID: 17325030 PMCID: PMC1899965 DOI: 10.1128/mcb.00863-06] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [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: 11/20/2022] Open
Abstract
In Saccharomyces cerevisiae, double-strand breaks (DSBs) activate DNA checkpoint pathways that trigger several responses including a strong G(2)/M arrest. We have previously provided evidence that the phosphatases Ptc2 and Ptc3 of the protein phosphatase 2C type are required for DNA checkpoint inactivation after a DSB and probably dephosphorylate the checkpoint kinase Rad53. In this article we have investigated further the interactions between Ptc2 and Rad53. We showed that forkhead-associated domain 1 (FHA1) of Rad53 interacts with a specific threonine of Ptc2, T376, located outside its catalytic domain in a TXXD motif which constitutes an optimal FHA1 binding sequence in vitro. Mutating T376 abolishes Ptc2 interaction with the Rad53 FHA1 domain and results in adaptation and recovery defects following a DSB. We found that Ckb1 and Ckb2, the regulatory subunits of the protein kinase CK2, are necessary for the in vivo interaction between Ptc2 and the Rad53 FHA1 domain, that Ckb1 binds Ptc2 in vitro and that ckb1Delta and ckb2Delta mutants are defective in adaptation and recovery after a DSB. Our data thus strongly suggest that CK2 is the kinase responsible for the in vivo phosphorylation of Ptc2 T376.
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Affiliation(s)
- Ghislaine Guillemain
- CEA, Direction des Sciences du Vivant, Institut de Biologie et de la Technologies de Saclay, 91191 Gif-sur-Yvette Cedex, France
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Favreau P, Cheneval O, Menin L, Michalet S, Gaertner H, Principaud F, Thai R, Ménez A, Bulet P, Stöcklin R. The venom of the snake genus Atheris contains a new class of peptides with clusters of histidine and glycine residues. Rapid Commun Mass Spectrom 2007; 21:406-12. [PMID: 17206746 DOI: 10.1002/rcm.2853] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We investigated venoms from members of the genus Atheris (Serpentes, Viperidae), namely the rough scale bush viper (Atheris squamigera), the green bush viper (A. chlorechis) and the great lakes bush viper (A. nitschei), using mass spectrometry-based strategies, relying on matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MALDI-TOF-MS) and electrospray ionisation tandem mass spectrometry (ESI-MS/MS) with de novo peptide sequencing. We discovered a set of novel peptides with masses in the 2-3 kDa range and containing poly-His and poly-Gly segments (pHpG). Complete primary structural elucidation and confirmation of two sequences by Edman degradation indicated the consensus sequence EDDH(9)GVG(10). Bioinformatic investigations in protein sequence databanks did not show relevant homology with known peptides or proteins. However, a more extensive investigation of data in nucleic acid databases revealed some similarities to the precursor sequences of bradykinin potentiating peptides (BPP) and C-type natriuretic peptides (CNP), agents that are known to affect the cardiovascular system by acting on specific metalloproteases and receptors. The novel pHpG peptides found in Atheris venoms might also act on the cardiovascular system by inhibiting particular metalloproteases, which however remain to be identified.
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Affiliation(s)
- Philippe Favreau
- Atheris Laboratories, case postale 314, CH-1233 Bernex-Geneva, Switzerland
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Barthe P, Pujade-Renaud V, Breton F, Gargani D, Thai R, Roumestand C, de Lamotte F. Structural analysis of cassiicolin, a host-selective protein toxin from Corynespora cassiicola. J Mol Biol 2006; 367:89-101. [PMID: 17234212 DOI: 10.1016/j.jmb.2006.11.086] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [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: 09/18/2006] [Revised: 11/30/2006] [Accepted: 11/30/2006] [Indexed: 11/15/2022]
Abstract
Cassiicolin is a host-selective toxin (HST) produced by the fungus Corynespora cassiicola (strain CCP). It is responsible for the Corynespora leaf fall (CLF) disease, which is among the main pathologies affecting rubber tree (Hevea brasiliensis). Working on purified cassiicolin and using electron microscopy, we have demonstrated that this 27-residue O-glycosylated protein is able to induce cellular damages identical to those induced by the fungus on rubber tree leaves and displays the same host selectivity. The solution structure and disulfide pairing of cassiicolin have been determined using NMR spectroscopy and simulated annealing calculations. Cassiicolin appears to have an original structure with a prolate ellipsoid shape. It adopts an over-all fold consisting of three strands arranged in a right-handed twisted, antiparallel beta-sheet knitted by three disulfide bonds. Its conformation resembles that found in small trypsine-like inhibitors isolated from the brain, the fat body and the hemolymph of locust grasshoppers. But cassiicolin has no sequence homology with these protease inhibitors, and lacks their characteristic substrate-binding loop. Probably, this motif represents one of the few highly stabilized "minimal" scaffolds, with a high sequence permissiveness, that nature has selected to evolve over different phyla and to support different functions. The knowledge of the 3D structure opens the way to the delineation of the mechanism of action of the toxin using site-directed mutagenesis.
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Affiliation(s)
- Philippe Barthe
- Centre de Biochimie Structurale, UMR 5048 CNRS/UM1-UMR 554 Inserm/UM1, 29 rue de Navacelles, 34090 Montpellier Cedex, France
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de Lamotte F, Duviau MP, Sanier C, Thai R, Poncet J, Bieysse D, Breton F, Pujade-Renaud V. Purification and characterization of cassiicolin, the toxin produced by Corynespora cassiicola, causal agent of the leaf fall disease of rubber tree. J Chromatogr B Analyt Technol Biomed Life Sci 2006; 849:357-62. [PMID: 17113837 DOI: 10.1016/j.jchromb.2006.10.051] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [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: 05/30/2006] [Revised: 10/10/2006] [Accepted: 10/27/2006] [Indexed: 11/17/2022]
Abstract
Cassiicolin, a phytotoxin produced by the necrotrophic fungus Corynespora cassiicola, was purified to homogeneity from a rubber tree isolate. The optimized protocol involves reverse phase chromatography followed by size exclusion chromatography, with monitoring of the toxicity on detached rubber tree leaves. Cassiicolin appeared to be a peptide composed of 27 amino acids, glycosylated on the second residue, with a N-terminal pyroglutamic acid and 6 cysteines involved in disulfide bonds. Its molecular mass was estimated to be 2885 Da. No significant sequence homology with other proteins could be found. The availability of pure toxin in sufficient amount is a prerequisite for its structure determination, which is a key step in the understanding of the aggression mechanism.
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Kessler P, Thai R, Beau F, Tarride JL, Ménez A. Photocrosslinking/Label Transfer: A Key Step in Mapping Short α-Neurotoxin Binding Site on Nicotinic Acetylcholine Receptor. Bioconjug Chem 2006; 17:1482-91. [PMID: 17105227 DOI: 10.1021/bc060175j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 11/28/2022]
Abstract
We developed a novel radioactive short bifunctional photoprobe, which could be coupled through a cleavable bond to an engineered cysteinyl residue on an analogue of a nicotinic acetylcholine receptor-specific alpha-neurotoxin. This cysteine was put on the tip of loop II in place of Arg33, a major residue for the interaction with the receptor. To facilitate the purification of the nAChR labeled subunits, we tagged the ligand with a desthiobiotin moiety. After irradiation of the photosensitive toxin-nAChR complex, gel electrophoresis showed that most of the radioactivity was attached to the alpha subunit (59%), followed by the gamma subunit (28%), with the delta subunit (13%) being less labeled. On a preparative scale, the labeled subunits were purified on streptavidin beads before separation on SDS-PAGE. "In-gel" CNBr cleavage of the labeled alpha subunit followed by Edman degradation of the purified peptides showed that alphaTyr190 and alphaTyr198 were the most labeled residues, with a less important labeling on alphaCys192. We believe that the novel photoactivatable probe will be of great use to identify key residues of ligands interacting with macromolecules.
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Kittiworakarn J, Lecoq A, Moine G, Thai R, Lajeunesse E, Drevet P, Vidaud C, Ménez A, Léonetti M. HIV-1 Tat Raises an Adjuvant-free Humoral Immune Response Controlled by Its Core Region and Its Ability to Form Cysteine-mediated Oligomers. J Biol Chem 2006; 281:3105-15. [PMID: 16321975 DOI: 10.1074/jbc.m509899200] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [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: 11/06/2022] Open
Abstract
Proteins are poor immunogens that require an adjuvant to raise an immune response. Here we show that the human immunodeficiency virus, type 1 Tat protein possesses an autoadjuvant property, and we have identified the determinants and the molecular events that are associated with this unusual property. Using a series of chemically synthesized Tat101 derivatives, we show that the core region controls the autoadjuvant phenomenon independently of the B-cell recognition and T-cell stimulation that are associated with epitopes respectively located on the N-terminal region and the cysteine-rich region. We also show that cysteine-mediated oligomerization is a key molecular event of the adjuvant-free antibody response. In particular, a Tat dimer formed by the oxidation of two cysteine residues, at position 34 only, raises an adjuvant-free antibody response that is comparable with that observed with the wild-type protein. Unlike the parent protein, the Tat dimer has no transactivating activity and remains homogeneous for several weeks in solution. This construct might be of value for the design of an adjuvant-free Tat-based vaccine. Furthermore, we suggest that the specific autoadjuvanticity determinant of Tat could be used to provide other proteins with adjuvant-free immunogenicity.
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Affiliation(s)
- Jongrak Kittiworakarn
- Département d'Ingénierie et d'Etudes des Protéines, C.E. SACLAY, CEA, 91191 Gif-sur-Yvette CEDEX, France
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Abstract
We investigated whether protein stability controls antigen presentation using a four disulfide-containing snake toxin and three derivatives carrying one or two mutations (L1A, L1A/H4Y, and H4Y). These mutations were anticipated to increase (H4Y) or decrease (L1A) the antigen non-covalent stabilizing interactions, H4Y being naturally and frequently observed in neurotoxins. The chemically synthesized derivatives shared similar three-dimensional structure, biological activity, and T epitope pattern. However, they displayed differential thermal unfolding capacities, ranging from 65 to 98 degrees C. Using these differentially stable derivatives, we demonstrated that antigen stability controls antigen proteolysis, antigen processing in antigen-presenting cells, T cell stimulation, and kinetics of expression of T cell determinants. Therefore, non-covalent interactions that control the unfolding capacity of an antigen are key parameters in the efficacy of antigen presentation. By affecting the stabilizing interaction network of proteins, some natural mutations may modulate the subsequent T-cell stimulation and might help microorganisms to escape the immune response.
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Affiliation(s)
- Robert Thai
- Département d'Ingénierie et d'Etudes des Protéines, Commissariat à l'Energie Atomique, C.E. Saclay, 91191 Gif-sur-Yvette, France
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Thomas X, Destoumieux-Garzón D, Peduzzi J, Afonso C, Blond A, Birlirakis N, Goulard C, Dubost L, Thai R, Tabet JC, Rebuffat S. Siderophore Peptide, a New Type of Post-translationally Modified Antibacterial Peptide with Potent Activity. J Biol Chem 2004; 279:28233-42. [PMID: 15102848 DOI: 10.1074/jbc.m400228200] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Microcin E492 (MccE492, 7886 Da), the 84-amino acid antimicrobial peptide from Klebsiella pneumoniae, was purified in a post-translationally modified form, MccE492m (8717 Da), from culture supernatants of either the recombinant Escherichia coli VCS257 strain harboring the pJAM229 plasmid or the K. pneumoniae RYC492 strain. Chymotrypsin digestion of MccE492m led to the MccE492m-(74-84) C-terminal fragment that carries the modification and that was analyzed by mass spectrometry and nuclear magnetic resonance at natural abundance. The 831-Da post-translational modification consists of a trimer of N-(2,3-dihydroxybenzoyl)-l-serine linked via a C-glycosidic linkage to a beta-d-glucose moiety, itself linked to the MccE492m Ser-84-carboxyl through an O-glycosidic bond. This modification, which mimics a catechol-type siderophore, was shown to bind ferric ions by analysis of the collision-induced dissociation pattern obtained for MccE492m-(74-84) by electrospray ion trap mass spectrometry experiments in the presence of FeCl(3). By using a series of wild-type and mutant isogenic strains, the three catechol-type siderophore receptors Fiu, Cir, and FepA were shown to be responsible for the recognition of MccE492m at the outer membrane of sensitive bacteria. Because MccE492m shows a broader spectrum of antibacterial activity and is more potent than MccE492, we propose that by increasing the microcin/receptor affinity, the modification leads to a better recognition and subsequently to a higher antimicrobial activity of the microcin. Therefore, MccE492m is the first member of a new class of antimicrobial peptides carrying a siderophore-like post-translational modification and showing potent activity, which we term siderophore-peptides.
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Affiliation(s)
- Xavier Thomas
- Laboratoire de Chimie et Biochimie des Substances Naturelles, UMR 5154 CNRS USM 502, the Département Régulations, Développement et Diversité Moléculaire, Muséum National d'Histoire Naturelle, 63 Rue Buffon, 75005 Paris
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Galat A, Thai R. Long-size isoelectricfocusing (IEF) in flexible silicone tubes: an application to semi-preparative fractionation of proteins. Int J Biol Macromol 2004; 34:163-71. [PMID: 15225988 DOI: 10.1016/j.ijbiomac.2004.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2004] [Indexed: 11/24/2022]
Abstract
Soluble proteins extracted from porcine brains were subjected to a series of optional fractionation steps on various chromatographic media including a novel device for semi-preparative isoelectrofocusing (IEF) carried in a flexible silicone tube. The dimensions of the IEF granulated gel beds can be varied from 40 to 75 cm (length) and 0.4-1.6 cm (diameter) which are dependent on the protein's concentration. An average optimal focalisation time of proteins is dependent of the tube length, its diameter and complexity of proteins' mixtures but it is usually reached during 15,000-30,000 Vh. A series of sequential protein's fractionation techniques including semi-preparative IEF carried in the flexible silicone tube with the following dimensions: 75 cm in length and 1.6 cm in diameter permitted for observation and partial characterisation of several proteins whose expression levels are specifically high in the brain.
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Affiliation(s)
- Andrzej Galat
- Département d'Ingénierie et d'Etudes des Protéines, DSV/CEA, CE-Saclay, F-91191 Gif-sur-Yvette Cedex, France.
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Poh SL, Mourier G, Thai R, Armugam A, Molgó J, Servent D, Jeyaseelan K, Ménez A. A synthetic weak neurotoxin binds with low affinity to Torpedo and chicken alpha7 nicotinic acetylcholine receptors. Eur J Biochem 2002; 269:4247-56. [PMID: 12199703 DOI: 10.1046/j.1432-1033.2002.03113.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Weak neurotoxins from snake venom are small proteins with five disulfide bonds, which have been shown to be poor binders of nicotinic acetylcholine receptors. We report on the cloning and sequencing of four cDNAs encoding weak neurotoxins from Naja sputatrix venom glands. The protein encoded by one of them, Wntx-5, has been synthesized by solid-phase synthesis and characterized. The physicochemical properties of the synthetic toxin (sWntx-5) agree with those anticipated for the natural toxin. We show that this toxin interacts with relatively low affinity (K(d) = 180 nm) with the muscular-type acetylcholine receptor of the electric organ of T. marmorata, and with an even weaker affinity (90 microm) with the neuronal alpha7 receptor of chicken. Electrophysiological recordings using isolated mouse hemidiaphragm and frog cutaneous pectoris nerve-muscle preparations revealed no blocking activity of sWntx-5 at microm concentrations. Our data confirm previous observations that natural weak neurotoxins from cobras have poor affinity for nicotinic acetylcholine receptors.
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Affiliation(s)
- Siew Lay Poh
- Département d'Ingénierie et d'Etudes des Protéines, CEA, Saclay, 91191 Gif-sur-Yvette Cedex, France
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Léonetti M, Galon J, Thai R, Sautès-Fridman C, Moine G, Ménez A. Presentation of antigen in immune complexes is boosted by soluble bacterial immunoglobulin binding proteins. J Exp Med 1999; 189:1217-28. [PMID: 10209039 PMCID: PMC2193025 DOI: 10.1084/jem.189.8.1217] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Using a snake toxin as a proteic antigen (Ag), two murine toxin-specific monoclonal antibodies (mAbs), splenocytes, and two murine Ag-specific T cell hybridomas, we showed that soluble protein A (SpA) from Staphylococcus aureus and protein G from Streptococcus subspecies, two Ig binding proteins (IBPs), not only abolish the capacity of the mAbs to decrease Ag presentation but also increase Ag presentation 20-100-fold. Five lines of evidence suggest that this phenomenon results from binding of an IBP-Ab-Ag complex to B cells possessing IBP receptors. First, we showed that SpA is likely to boost presentation of a free mAb, suggesting that the IBP-boosted presentation of an Ag in an immune complex results from the binding of IBP to the mAb. Second, FACS analyses showed that an Ag-Ab complex is preferentially targeted by SpA to a subpopulation of splenocytes mainly composed of B cells. Third, SpA-dependent boosted presentation of an Ag-Ab complex is further enhanced when splenocytes are enriched in cells containing SpA receptors. Fourth, the boosting effect largely diminishes when splenocytes are depleted of cells containing SpA receptors. Fifth, the boosting effect occurs only when IBP simultaneously contains a Fab and an Fc binding site. Altogether, our data suggest that soluble IBPs can bridge immune complexes to APCs containing IBP receptors, raising the possibility that during an infection process by bacteria secreting these IBPs, Ag-specific T cells may activate IBP receptor-containing B cells by a mechanism of intermolecular help, thus leading to a nonspecific immune response.
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Affiliation(s)
- M Léonetti
- Commissariat à l'Energie Atomique, Département d'Ingénierie et d'Etudes des Protéines (DIEP) C.E. Saclay, Gif-Sur-Yvette cedex, France.
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Léonetti M, Thai R, Cotton J, Leroy S, Drevet P, Ducancel F, Boulain JC, Ménez A. Increasing Immunogenicity of Antigens Fused to Ig-Binding Proteins by Cell Surface Targeting. The Journal of Immunology 1998. [DOI: 10.4049/jimmunol.160.8.3820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Fusion of antigenic proteins to Ig-binding proteins such as protein A from Staphylococcus aureus and its derived ZZ fragment is known to increase immunogenicity of the fused Ag in vivo. To shed light on the origin of this effect, we used snake toxins as Ags and observed that 1) fusion of toxins to ZZ enhanced their presentation to a toxin-specific T cell hybridoma (T1B2), using A20 B lymphoma cells, splenocytes, or peritoneal exudate cells as APCs; 2) this enhancement further increased when the number of fused Ig-binding domains varied from two with ZZ to five with protein A; and 3) the phenomenon vanished when the fusion protein was preincubated with an excess of free ZZ or when P388D1 monocytes cells were used as APCs. Therefore, ZZ-fused toxins are likely to be targeted to surface Igs of APCs by their ZZ moiety. Furthermore, ZZ-α and toxin α stimulated similar profiles of toxin-specific T cells in BALB/c mice, suggesting a comparable processing and presentation in vivo for both toxin forms. To improve the targeting efficiency, ZZ-α was noncovalently complexed to various Igs directed to different cell surface components of APCs. The resulting complexes were up to 103-fold more potent than the free toxin at stimulating T1B2. Also, they elicited both a T cell and an Ab response in BALB/c mice, without the need of any adjuvant. This simple approach may find practical applications by increasing the immunogenicity of recombinant proteins without the use of adjuvant.
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Affiliation(s)
- Michel Léonetti
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Robert Thai
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Joël Cotton
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Sandrine Leroy
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Pascal Drevet
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Frédéric Ducancel
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - Jean Claude Boulain
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
| | - André Ménez
- Département d’Ingéniérie et d’Études des Protéines (DIEP) C. E. Saclay, Gif-Sur-Yvette, France
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Léonetti M, Thai R, Cotton J, Leroy S, Drevet P, Ducancel F, Boulain JC, Ménez A. Increasing immunogenicity of antigens fused to Ig-binding proteins by cell surface targeting. J Immunol 1998; 160:3820-7. [PMID: 9558086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Fusion of antigenic proteins to Ig-binding proteins such as protein A from Staphylococcus aureus and its derived ZZ fragment is known to increase immunogenicity of the fused Ag in vivo. To shed light on the origin of this effect, we used snake toxins as Ags and observed that 1) fusion of toxins to ZZ enhanced their presentation to a toxin-specific T cell hybridoma (T1B2), using A20 B lymphoma cells, splenocytes, or peritoneal exudate cells as APCs; 2) this enhancement further increased when the number of fused Ig-binding domains varied from two with ZZ to five with protein A; and 3) the phenomenon vanished when the fusion protein was preincubated with an excess of free ZZ or when P388D1 monocytes cells were used as APCs. Therefore, ZZ-fused toxins are likely to be targeted to surface Igs of APCs by their ZZ moiety. Furthermore, ZZ-alpha and toxin alpha stimulated similar profiles of toxin-specific T cells in BALB/c mice, suggesting a comparable processing and presentation in vivo for both toxin forms. To improve the targeting efficiency, ZZ-alpha was noncovalently complexed to various Igs directed to different cell surface components of APCs. The resulting complexes were up to 10(3)-fold more potent than the free toxin at stimulating T1B2. Also, they elicited both a T cell and an Ab response in BALB/c mice, without the need of any adjuvant. This simple approach may find practical applications by increasing the immunogenicity of recombinant proteins without the use of adjuvant.
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Affiliation(s)
- M Léonetti
- Département d'Ingéniérie et d'Etudes des Protéines, C. E. Saclay, Gif-Sur-Yvette, France.
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