1
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Alkanlı SS, Dal Yöntem F, Yaşar M, Güven C, Kahraman MV, Kayaman Apohan N, Aktaş Z, Öncül MO, Ünlü A, Akçakaya H. Molecularly imprinted nanoparticles with recognition properties towards diphtheria toxin for ELISA applications. JOURNAL OF BIOMATERIALS SCIENCE, POLYMER EDITION 2022; 34:753-767. [PMID: 36357334 DOI: 10.1080/09205063.2022.2145866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Plastic antibodies can be used for in vitro neutralization of biomacromolecules with different fragments due to their potential in separation, purification, chemical sensor, catalysis and drug production studies. These polymer nanoparticles with binding affinity and selectivity comparable to natural antibodies were prepared using functional monomer synthesis and copolymerization of acrylic monomers via miniemulsion polymerization. As a result, the in vitro cytotoxic effect from diphtheria toxin was reduced by MIPs. In vitro imaging experiments of polymer nanoparticles (plastic antibodies) were performed to examine the interaction of diphtheria toxin with actin filaments, and MIPs inhibited diphtheria toxin damage on actin filaments. The enzyme-linked immunosorbent assay (ELISA) was performed with plastic antibodies labeled with biotin, and it was determined that plastic antibodies could also be used for diagnostic purposes. We report that molecularly imprinted polymers (MIPs), which are biocompatible polymer nanoparticles, can capture and reduce the effect of diphtheria toxic and its fragment A.
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Affiliation(s)
- Süleyman Serdar Alkanlı
- Department of Biophysics, Istanbul Faculty of Medicine, Istanbul University, 34093, Istanbul, Turkey
- Department of Biophysics, Institute of Health Sciences, Istanbul Faculty of Medicine, Istanbul University, 34093, Istanbul, Turkey
| | - Fulya Dal Yöntem
- Department of Biophysics, Koç University School of Medicine, Koç University, 34450, Sariyer, Istanbul, Turkey
- Koç University Research Center for Translational Medicine (KUTTAM), 34450, Sariyer, Istanbul, Turkey
| | - Merve Yaşar
- Department of Chemistry, Faculty of Art and Science, Marmara University, 34722, Göztepe, Istanbul, Turkey
| | - Celal Güven
- Department of Biophysics, Faculty of Medicine, Adiyaman University, 02040, Adiyaman, Turkey
| | - M. Vezir Kahraman
- Department of Chemistry, Faculty of Art and Science, Marmara University, 34722, Göztepe, Istanbul, Turkey
| | - Nilhan Kayaman Apohan
- Department of Chemistry, Faculty of Art and Science, Marmara University, 34722, Göztepe, Istanbul, Turkey
| | - Zerrin Aktaş
- Department of Microbiology & Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, 34104, Istanbul, Turkey
| | - Mustafa Oral Öncül
- Department of Infectious Diseases & Clinical Microbiology, Istanbul Faculty of Medicine, Istanbul University, 34093, Istanbul, Turkey
| | - Ayhan Ünlü
- Department of Biophysics, Faculty of Medicine, Trakya University, 22020, Edirne, Turkey
| | - Handan Akçakaya
- Department of Biophysics, Istanbul Faculty of Medicine, Istanbul University, 34093, Istanbul, Turkey
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2
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Wu Y, Mahtal N, Paillares E, Swistak L, Sagadiev S, Acharya M, Demeret C, Werf SVD, Guivel-Benhassine F, Schwartz O, Petracchini S, Mettouchi A, Caramelle L, Couvineau P, Thai R, Barbe P, Keck M, Brodin P, Machelart A, Sencio V, Trottein F, Sachse M, Chicanne G, Payrastre B, Ville F, Kreis V, Popoff MR, Johannes L, Cintrat JC, Barbier J, Gillet D, Lemichez E. C910 chemical compound inhibits the traffiking of several bacterial AB toxins with cross-protection against influenza virus. iScience 2022; 25:104537. [PMID: 35769882 PMCID: PMC9234246 DOI: 10.1016/j.isci.2022.104537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 04/20/2022] [Accepted: 06/01/2022] [Indexed: 11/23/2022] Open
Abstract
The development of anti-infectives against a large range of AB-like toxin-producing bacteria includes the identification of compounds disrupting toxin transport through both the endolysosomal and retrograde pathways. Here, we performed a high-throughput screening of compounds blocking Rac1 proteasomal degradation triggered by the Cytotoxic Necrotizing Factor-1 (CNF1) toxin, which was followed by orthogonal screens against two toxins that hijack the endolysosomal (diphtheria toxin) or retrograde (Shiga-like toxin 1) pathways to intoxicate cells. This led to the identification of the molecule C910 that induces the enlargement of EEA1-positive early endosomes associated with sorting defects of CNF1 and Shiga toxins to their trafficking pathways. C910 protects cells against eight bacterial AB toxins and the CNF1-mediated pathogenic Escherichia coli invasion. Interestingly, C910 reduces influenza A H1N1 and SARS-CoV-2 viral infection in vitro. Moreover, parenteral administration of C910 to mice resulted in its accumulation in lung tissues and a reduction in lethal influenza infection.
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Affiliation(s)
- Yu Wu
- Unité des Toxines Bactériennes, UMR CNRS 6047, Inserm U1306, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris, France
| | - Nassim Mahtal
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SCBM, 91191 Gif-sur-Yvette, France
| | - Eléa Paillares
- Unité des Toxines Bactériennes, UMR CNRS 6047, Inserm U1306, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris, France
- Université Paris Cité, 75006 Paris, France
| | - Léa Swistak
- Unité des Toxines Bactériennes, UMR CNRS 6047, Inserm U1306, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris, France
- Université Paris Cité, 75006 Paris, France
| | - Sara Sagadiev
- Seattle Children’s Research Institute, Jack R MacDonald Building, 1900 9th Avenue, Seattle, WA 98101, USA
| | - Mridu Acharya
- Seattle Children’s Research Institute, Jack R MacDonald Building, 1900 9th Avenue, Seattle, WA 98101, USA
| | - Caroline Demeret
- Unité Génétique Moléculaire des Virus à ARN, UMR 3569 CNRS, Université de Paris, Département de Virologie, Institut Pasteur, 28 rue du Dr Roux, 75724 Paris, France
| | - Sylvie Van Der Werf
- Unité Génétique Moléculaire des Virus à ARN, UMR 3569 CNRS, Université de Paris, Département de Virologie, Institut Pasteur, 28 rue du Dr Roux, 75724 Paris, France
| | - Florence Guivel-Benhassine
- Unité virus et immunité, Département de Virologie, Institut Pasteur, 28 rue du Dr Roux, 75724 Paris, France
| | - Olivier Schwartz
- Unité virus et immunité, Département de Virologie, Institut Pasteur, 28 rue du Dr Roux, 75724 Paris, France
| | - Serena Petracchini
- Unité des Toxines Bactériennes, UMR CNRS 6047, Inserm U1306, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris, France
- Université Paris Cité, 75006 Paris, France
| | - Amel Mettouchi
- Unité des Toxines Bactériennes, UMR CNRS 6047, Inserm U1306, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris, France
| | - Lucie Caramelle
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
| | - Pierre Couvineau
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
| | - Robert Thai
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
| | - Peggy Barbe
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
| | - Mathilde Keck
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
| | - Priscille Brodin
- Centre d’Infection et d’Immunité de Lille, Inserm U1019, CNRS UMR 9017, University of Lille, CHU Lille- Institut Pasteur de Lille, 59000 Lille, France
| | - Arnaud Machelart
- Centre d’Infection et d’Immunité de Lille, Inserm U1019, CNRS UMR 9017, University of Lille, CHU Lille- Institut Pasteur de Lille, 59000 Lille, France
| | - Valentin Sencio
- Centre d’Infection et d’Immunité de Lille, Inserm U1019, CNRS UMR 9017, University of Lille, CHU Lille- Institut Pasteur de Lille, 59000 Lille, France
| | - François Trottein
- Centre d’Infection et d’Immunité de Lille, Inserm U1019, CNRS UMR 9017, University of Lille, CHU Lille- Institut Pasteur de Lille, 59000 Lille, France
| | - Martin Sachse
- Unité Technologie et service BioImagerie Ultrastructurale, Institut Pasteur, 28 rue du Dr Roux, 75724 Paris, France
| | - Gaëtan Chicanne
- Inserm, UMR1297 and Université Toulouse III Paul Sabatier, I2MC, 31024 Toulouse, France
| | - Bernard Payrastre
- Inserm, UMR1297 and Université Toulouse III Paul Sabatier, I2MC, 31024 Toulouse, France
| | - Florian Ville
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SCBM, 91191 Gif-sur-Yvette, France
| | - Victor Kreis
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
| | - Michel-Robert Popoff
- Unité des Toxines Bactériennes, UMR CNRS 6047, Inserm U1306, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris, France
| | - Ludger Johannes
- Institut Curie, PSL Research University, Cellular and Chemical Biology unit, Endocytic Trafficking and Intracellular Delivery team, U1143 INSERM, UMR3666 CNRS, 26 rue d'Ulm, 75248 Paris, France
| | - Jean-Christophe Cintrat
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SCBM, 91191 Gif-sur-Yvette, France
| | - Julien Barbier
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
| | - Daniel Gillet
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé, SIMoS, 91191 Gif-sur-Yvette, France
| | - Emmanuel Lemichez
- Unité des Toxines Bactériennes, UMR CNRS 6047, Inserm U1306, Institut Pasteur, 25 rue du Dr Roux, 75724 Paris, France
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Zanetti G, Mattarei A, Lista F, Rossetto O, Montecucco C, Pirazzini M. Novel Small Molecule Inhibitors That Prevent the Neuroparalysis of Tetanus Neurotoxin. Pharmaceuticals (Basel) 2021; 14:ph14111134. [PMID: 34832916 PMCID: PMC8618345 DOI: 10.3390/ph14111134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/25/2021] [Accepted: 11/04/2021] [Indexed: 01/22/2023] Open
Abstract
Tetanus neurotoxin (TeNT) is a protein exotoxin produced by Clostridium tetani that causes the deadly spastic neuroparalysis of tetanus. It consists of a metalloprotease light chain and of a heavy chain linked via a disulphide bond. TeNT binds to the neuromuscular junction (NMJ) and it is retro-axonally transported into vesicular compartments to the spinal cord, where it is released and taken up by inhibitory interneuron. Therein, the catalytic subunit is translocated into the cytoplasm where it cleaves its target protein VAMP-1/2 with consequent blockage of the release of inhibitory neurotransmitters. Vaccination with formaldehyde inactivated TeNT prevents the disease, but tetanus is still present in countries where vaccination coverage is partial. Here, we show that small molecule inhibitors interfering with TeNT trafficking or with the reduction of the interchain disulphide bond block the activity of the toxin in neuronal cultures and attenuate tetanus symptoms in vivo. These findings are relevant for the development of therapeutics against tetanus based on the inhibition of toxin molecules that are being retro-transported to or are already within the spinal cord and are, thus, not accessible to anti-TeNT immunoglobulins.
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Affiliation(s)
- Giulia Zanetti
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy; (G.Z.); (O.R.)
| | - Andrea Mattarei
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via F. Marzolo 5, 35131 Padova, Italy;
| | - Florigio Lista
- Scientific Department, Army Medical Center, Via Santo Stefano Rotondo 4, 00184 Rome, Italy;
| | - Ornella Rossetto
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy; (G.Z.); (O.R.)
- Italian Research Council, Institute of Neuroscience, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy
- CIR-Myo, Centro Interdipartimentale di Ricerca di Miologia, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy
| | - Cesare Montecucco
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy; (G.Z.); (O.R.)
- Italian Research Council, Institute of Neuroscience, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy
- Correspondence: (C.M.); (M.P.)
| | - Marco Pirazzini
- Department of Biomedical Sciences, University of Padova, Via U. Bassi 58/B, 35121 Padova, Italy; (G.Z.); (O.R.)
- CIR-Myo, Centro Interdipartimentale di Ricerca di Miologia, University of Padova, Via U. Bassi 58/B, 35131 Padova, Italy
- Correspondence: (C.M.); (M.P.)
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4
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Wu Y, Boulogne C, Carle S, Podinovskaia M, Barth H, Spang A, Cintrat J, Gillet D, Barbier J. Regulation of endo‐lysosomal pathway and autophagic flux by broad‐spectrum antipathogen inhibitor ABMA. FEBS J 2020; 287:3184-3199. [DOI: 10.1111/febs.15201] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 09/10/2019] [Accepted: 01/02/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Yu Wu
- Université Paris‐Saclay CEAINRAE Médicaments et Technologies pour la Santé (MTS) SIMoS Gif‐sur‐Yvette91191France
| | - Claire Boulogne
- IMAGERIE‐GIF Institute for Integrative Biology of the Cell (I2BC) CEA CNRS Université Paris‐Sud Université Paris‐Saclay Gif‐sur‐Yvette France
| | - Stefan Carle
- Institute of Pharmacology and Toxicology University of Ulm Medical Center Germany
| | | | - Holger Barth
- Institute of Pharmacology and Toxicology University of Ulm Medical Center Germany
| | - Anne Spang
- Growth and Development Biozentrum University of Basel Switzerland
| | - Jean‐Christophe Cintrat
- Université Paris‐Saclay CEA INRAE Médicaments et Technologies pour la Santé (MTS) SCBM Gif‐sur‐Yvette91191France
| | - Daniel Gillet
- Université Paris‐Saclay CEAINRAE Médicaments et Technologies pour la Santé (MTS) SIMoS Gif‐sur‐Yvette91191France
| | - Julien Barbier
- Université Paris‐Saclay CEAINRAE Médicaments et Technologies pour la Santé (MTS) SIMoS Gif‐sur‐Yvette91191France
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Sharma NC, Efstratiou A, Mokrousov I, Mutreja A, Das B, Ramamurthy T. Diphtheria. Nat Rev Dis Primers 2019; 5:81. [PMID: 31804499 DOI: 10.1038/s41572-019-0131-y] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/25/2019] [Indexed: 01/09/2023]
Abstract
Diphtheria is a potentially fatal infection mostly caused by toxigenic Corynebacterium diphtheriae strains and occasionally by toxigenic C. ulcerans and C. pseudotuberculosis strains. Diphtheria is generally an acute respiratory infection, characterized by the formation of a pseudomembrane in the throat, but cutaneous infections are possible. Systemic effects, such as myocarditis and neuropathy, which are associated with increased fatality risk, are due to diphtheria toxin, an exotoxin produced by the pathogen that inhibits protein synthesis and causes cell death. Clinical diagnosis is confirmed by the isolation and identification of the causative Corynebacterium spp., usually by bacterial culture followed by enzymatic and toxin detection tests. Diphtheria can be treated with the timely administration of diphtheria antitoxin and antimicrobial therapy. Although effective vaccines are available, this disease has the potential to re-emerge in countries where the recommended vaccination programmes are not sustained, and increasing proportions of adults are becoming susceptible to diphtheria. Thousands of diphtheria cases are still reported annually from several countries in Asia and Africa, along with many outbreaks. Changes in the epidemiology of diphtheria have been reported worldwide. The prevalence of toxigenic Corynebacterium spp. highlights the need for proper clinical and epidemiological investigations to quickly identify and treat affected individuals, along with public health measures to prevent and contain the spread of this disease.
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Affiliation(s)
- Naresh Chand Sharma
- Laboratory Department, Maharishi Valmiki Infectious Diseases Hospital, Delhi, India
| | - Androulla Efstratiou
- WHO Collaborating Centre for Diphtheria and Streptococcal Infections, Reference Microbiology Division, Public Health England, London, UK
| | - Igor Mokrousov
- Laboratory of Molecular Epidemiology and Evolutionary Genetics, St. Petersburg Pasteur Institute, St. Petersburg, Russia
| | - Ankur Mutreja
- Global Health-Infectious Diseases, Department of Medicine, University of Cambridge, Cambridge, UK
| | - Bhabatosh Das
- Infection and Immunology Division, Translational Health Science and Technology Institute, Faridabad, India
| | - Thandavarayan Ramamurthy
- Infection and Immunology Division, Translational Health Science and Technology Institute, Faridabad, India.
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6
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Wu Y, Pons V, Noël R, Kali S, Shtanko O, Davey RA, Popoff MR, Tordo N, Gillet D, Cintrat JC, Barbier J. DABMA: A Derivative of ABMA with Improved Broad-Spectrum Inhibitory Activity of Toxins and Viruses. ACS Med Chem Lett 2019; 10:1140-1147. [PMID: 31413797 DOI: 10.1021/acsmedchemlett.9b00155] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 07/02/2019] [Indexed: 02/08/2023] Open
Abstract
The small molecule ABMA has been previously shown to protect cells against multiple toxins and pathogens including virus, intracellular bacteria, and parasite. Its mechanism of action is directly associated with host endolysosomal pathway rather than targeting toxin or pathogen itself. However, the relationship of its broad-spectrum anti-infection activity and chemical structure is not yet resolved. Here, we synthesized a series of derivatives and compared their activities against diphtheria toxin (DT). Dimethyl-ABMA (DABMA), one of the most potent analogs with about 20-fold improvement in protection efficacy against DT, was identified with a similar mechanism of action to ABMA. Moreover, DABMA exhibited enhanced efficacy against Clostridium difficile toxin B (TcdB), Clostridium sordellii lethal toxin (TcsL), Pseudomonas Exotoxin A (PE) as well as Rabies and Ebola viruses. The results revealed a structure-activity relationship of ABMA, which is a starting point for its clinical development as broad-spectrum drug against existing and emerging infectious diseases.
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Affiliation(s)
- Yu Wu
- Service d’Ingénierie Moléculaire des Protéines (SIMOPRO), CEA, Université
Paris-Saclay, LabEx LERMIT, 91191 Gif-sur-Yvette, France
| | - Valérie Pons
- Service de Chimie Bio-organique et de Marquage (SCBM), CEA, Université Paris-Saclay, LabEx LERMIT, 91191 Gif-sur-Yvette, France
| | - Romain Noël
- Service de Chimie Bio-organique et de Marquage (SCBM), CEA, Université Paris-Saclay, LabEx LERMIT, 91191 Gif-sur-Yvette, France
| | - Sabrina Kali
- Antiviral Strategies Unit, Virology Department, Institut Pasteur, 75015 Paris, France
| | - Olena Shtanko
- Department of Virology and Immunology, Texas Biomedical Research Institute, San Antonio, Texas 78227, United States
| | - Robert A. Davey
- Department of Microbiology, NEIDL, Boston University, Boston, Massachusetts 02118, United States
| | - Michel R. Popoff
- Bactéries anaérobies et Toxines, Institut Pasteur, 75015 Paris, France
| | - Noël Tordo
- Antiviral Strategies Unit, Virology Department, Institut Pasteur, 75015 Paris, France
| | - Daniel Gillet
- Service d’Ingénierie Moléculaire des Protéines (SIMOPRO), CEA, Université
Paris-Saclay, LabEx LERMIT, 91191 Gif-sur-Yvette, France
| | - Jean-Christophe Cintrat
- Service de Chimie Bio-organique et de Marquage (SCBM), CEA, Université Paris-Saclay, LabEx LERMIT, 91191 Gif-sur-Yvette, France
| | - Julien Barbier
- Service d’Ingénierie Moléculaire des Protéines (SIMOPRO), CEA, Université
Paris-Saclay, LabEx LERMIT, 91191 Gif-sur-Yvette, France
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7
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Abstract
Transition state theory teaches that chemically stable mimics of enzymatic transition states will bind tightly to their cognate enzymes. Kinetic isotope effects combined with computational quantum chemistry provides enzymatic transition state information with sufficient fidelity to design transition state analogues. Examples are selected from various stages of drug development to demonstrate the application of transition state theory, inhibitor design, physicochemical characterization of transition state analogues, and their progress in drug development.
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Affiliation(s)
- Vern L. Schramm
- Department of Biochemistry, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, New York 10461, United States
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8
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ABMA, a small molecule that inhibits intracellular toxins and pathogens by interfering with late endosomal compartments. Sci Rep 2017; 7:15567. [PMID: 29138439 PMCID: PMC5686106 DOI: 10.1038/s41598-017-15466-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 10/24/2017] [Indexed: 12/30/2022] Open
Abstract
Intracellular pathogenic microorganisms and toxins exploit host cell mechanisms to enter, exert their deleterious effects as well as hijack host nutrition for their development. A potential approach to treat multiple pathogen infections and that should not induce drug resistance is the use of small molecules that target host components. We identified the compound 1-adamantyl (5-bromo-2-methoxybenzyl) amine (ABMA) from a cell-based high throughput screening for its capacity to protect human cells and mice against ricin toxin without toxicity. This compound efficiently protects cells against various toxins and pathogens including viruses, intracellular bacteria and parasite. ABMA provokes Rab7-positive late endosomal compartment accumulation in mammalian cells without affecting other organelles (early endosomes, lysosomes, the Golgi apparatus, the endoplasmic reticulum or the nucleus). As the mechanism of action of ABMA is restricted to host-endosomal compartments, it reduces cell infection by pathogens that depend on this pathway to invade cells. ABMA may represent a novel class of broad-spectrum compounds with therapeutic potential against diverse severe infectious diseases.
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9
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Oliveira A, Oliveira LC, Aburjaile F, Benevides L, Tiwari S, Jamal SB, Silva A, Figueiredo HCP, Ghosh P, Portela RW, De Carvalho Azevedo VA, Wattam AR. Insight of Genus Corynebacterium: Ascertaining the Role of Pathogenic and Non-pathogenic Species. Front Microbiol 2017; 8:1937. [PMID: 29075239 PMCID: PMC5643470 DOI: 10.3389/fmicb.2017.01937] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 09/21/2017] [Indexed: 11/22/2022] Open
Abstract
This review gathers recent information about genomic and transcriptomic studies in the Corynebacterium genus, exploring, for example, prediction of pathogenicity islands and stress response in different pathogenic and non-pathogenic species. In addition, is described several phylogeny studies to Corynebacterium, exploring since the identification of species until biological speciation in one species belonging to the genus Corynebacterium. Important concepts associated with virulence highlighting the role of Pld protein and Tox gene. The adhesion, characteristic of virulence factor, was described using the sortase mechanism that is associated to anchorage to the cell wall. In addition, survival inside the host cell and some diseases, were too addressed for pathogenic corynebacteria, while important biochemical pathways and biotechnological applications retain the focus of this review for non-pathogenic corynebacteria. Concluding, this review broadly explores characteristics in genus Corynebacterium showing to have strong relevance inside the medical, veterinary, and biotechnology field.
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Affiliation(s)
- Alberto Oliveira
- Molecular and Cellular Laboratory, General Biology Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Leticia C Oliveira
- Molecular and Cellular Laboratory, General Biology Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Flavia Aburjaile
- Center of Genomics and System Biology, Federal University of Pará, Belém, Brazil
| | - Leandro Benevides
- Molecular and Cellular Laboratory, General Biology Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Sandeep Tiwari
- Molecular and Cellular Laboratory, General Biology Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Syed B Jamal
- Molecular and Cellular Laboratory, General Biology Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Arthur Silva
- Center of Genomics and System Biology, Federal University of Pará, Belém, Brazil
| | - Henrique C P Figueiredo
- Aquacen, National Reference Laboratory for Aquatic Animal Diseases, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Preetam Ghosh
- Department of Computational Science, Virginia Commonwealth University, Richmond, VA, United States
| | - Ricardo W Portela
- Laboratory of Immunology and Molecular Bióloga, Health Sciences Institute, Federal University of Bahiaa, Salvador, Brazil
| | - Vasco A De Carvalho Azevedo
- Molecular and Cellular Laboratory, General Biology Department, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Alice R Wattam
- Biocomplexity Institute of Virginia Tech, Virginia Tech, Blacksburg, VA, United States
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10
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Barth H. An Introduction to the Toxins Special Issue on "Novel Pharmacological Inhibitors for Bacterial Protein Toxins". Toxins (Basel) 2017; 9:toxins9050160. [PMID: 28492500 PMCID: PMC5450708 DOI: 10.3390/toxins9050160] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 05/09/2017] [Accepted: 05/10/2017] [Indexed: 12/24/2022] Open
Affiliation(s)
- Holger Barth
- Institute of Pharmacology and Toxicology, University of Ulm Medical Center, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
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