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Gadar K, McCarthy RR. Using next generation antimicrobials to target the mechanisms of infection. NPJ ANTIMICROBIALS AND RESISTANCE 2023; 1:11. [PMID: 38686217 PMCID: PMC11057201 DOI: 10.1038/s44259-023-00011-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 07/28/2023] [Indexed: 05/02/2024]
Abstract
The remarkable impact of antibiotics on human health is being eroded at an alarming rate by the emergence of multidrug resistant pathogens. There is a recognised consensus that new strategies to tackle infection are urgently needed to limit the devasting impact of antibiotic resistance on our global healthcare infrastructure. Next generation antimicrobials (NGAs) are compounds that target bacterial virulence factors to disrupt pathogenic potential without impacting bacterial viability. By disabling the key virulence factors required to establish and maintain infection, NGAs make pathogens more vulnerable to clearance by the immune system and can potentially render them more susceptible to traditional antibiotics. In this review, we discuss the developing field of NGAs and how advancements in this area could offer a viable standalone alternative to traditional antibiotics or an effective means to prolong antibiotic efficacy when used in combination.
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Affiliation(s)
- Kavita Gadar
- Division of Biosciences, Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UB8 3PH United Kingdom
| | - Ronan R. McCarthy
- Division of Biosciences, Department of Life Sciences, College of Health, Medicine and Life Sciences, Brunel University London, Uxbridge, UB8 3PH United Kingdom
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2
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Hatton NE, Baumann CG, Fascione MA. Developments in Mannose-Based Treatments for Uropathogenic Escherichia coli-Induced Urinary Tract Infections. Chembiochem 2021; 22:613-629. [PMID: 32876368 PMCID: PMC7894189 DOI: 10.1002/cbic.202000406] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/28/2020] [Indexed: 12/16/2022]
Abstract
During their lifetime almost half of women will experience a symptomatic urinary tract infection (UTI) with a further half experiencing a relapse within six months. Currently UTIs are treated with antibiotics, but increasing antibiotic resistance rates highlight the need for new treatments. Uropathogenic Escherichia coli (UPEC) is responsible for the majority of symptomatic UTI cases and thus has become a key pathological target. Adhesion of type one pilus subunit FimH at the surface of UPEC strains to mannose-saturated oligosaccharides located on the urothelium is critical to pathogenesis. Since the identification of FimH as a therapeutic target in the late 1980s, a substantial body of research has been generated focusing on the development of FimH-targeting mannose-based anti-adhesion therapies. In this review we will discuss the design of different classes of these mannose-based compounds and their utility and potential as UPEC therapeutics.
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Affiliation(s)
- Natasha E. Hatton
- York Structural Biology Lab, Department of ChemistryUniversity of YorkHeslington RoadYorkYO10 5DDUK
| | | | - Martin A. Fascione
- York Structural Biology Lab, Department of ChemistryUniversity of YorkHeslington RoadYorkYO10 5DDUK
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3
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Abstract
The chaperone-usher (CU) pathway is a conserved secretion system dedicated to the assembly of a superfamily of virulence-associated surface structures by a wide range of Gram-negative bacteria. Pilus biogenesis by the CU pathway requires two specialized assembly components: a dedicated periplasmic chaperone and an integral outer membrane assembly and secretion platform termed the usher. The CU pathway assembles a variety of surface fibers, ranging from thin, flexible filaments to rigid, rod-like organelles. Pili typically act as adhesins and function as virulence factors that mediate contact with host cells and colonization of host tissues. Pilus-mediated adhesion is critical for early stages of infection, allowing bacteria to establish a foothold within the host. Pili are also involved in modulation of host cell signaling pathways, bacterial invasion into host cells, and biofilm formation. Pili are critical for initiating and sustaining infection and thus represent attractive targets for the development of antivirulence therapeutics. Such therapeutics offer a promising alternative to broad-spectrum antibiotics and provide a means to combat antibiotic resistance and treat infection while preserving the beneficial microbiota. A number of strategies have been taken to develop antipilus therapeutics, including vaccines against pilus proteins, competitive inhibitors of pilus-mediated adhesion, and small molecules that disrupt pilus biogenesis. Here we provide an overview of the function and assembly of CU pili and describe current efforts aimed at interfering with these critical virulence structures.
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4
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Behren S, Westerlind U. Glycopeptides and -Mimetics to Detect, Monitor and Inhibit Bacterial and Viral Infections: Recent Advances and Perspectives. Molecules 2019; 24:E1004. [PMID: 30871155 PMCID: PMC6471658 DOI: 10.3390/molecules24061004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/06/2019] [Accepted: 03/07/2019] [Indexed: 11/17/2022] Open
Abstract
The initial contact of pathogens with host cells is usually mediated by their adhesion to glycan structures present on the cell surface in order to enable infection. Furthermore, glycans play important roles in the modulation of the host immune responses to infection. Understanding the carbohydrate-pathogen interactions are of importance for the development of novel and efficient strategies to either prevent, or interfere with pathogenic infection. Synthetic glycopeptides and mimetics thereof are capable of imitating the multivalent display of carbohydrates at the cell surface, which have become an important objective of research over the last decade. Glycopeptide based constructs may function as vaccines or anti-adhesive agents that interfere with the ability of pathogens to adhere to the host cell glycans and thus possess the potential to improve or replace treatments that suffer from resistance. Additionally, synthetic glycopeptides are used as tools for epitope mapping of antibodies directed against structures present on various pathogens and have become important to improve serodiagnostic methods and to develop novel epitope-based vaccines. This review will provide an overview of the most recent advances in the synthesis and application of glycopeptides and glycopeptide mimetics exhibiting a peptide-like backbone in glycobiology.
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Affiliation(s)
- Sandra Behren
- Department of Chemistry, Umeå University, 90187 Umeå, Sweden.
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5
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Igde S, Röblitz S, Müller A, Kolbe K, Boden S, Fessele C, Lindhorst TK, Weber M, Hartmann L. Linear Precision Glycomacromolecules with Varying Interligand Spacing and Linker Functionalities Binding to Concanavalin A and the Bacterial Lectin FimH. Macromol Biosci 2017; 17. [DOI: 10.1002/mabi.201700198] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/18/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Sinaida Igde
- Department for Organic Chemistry and Macromolecular Chemistry; Heinrich-Heine-Universität; Universitätsstraße 1 40225 Düsseldorf Germany
| | - Susanna Röblitz
- Department of Numerical Mathematics; Zuse Institute Berlin (ZIB); Takustr. 7 14195 Berlin Germany
- Department of Mathematics and Computer Science; Freie Universität Berlin; Arnimallee 6 14195 Berlin Germany
| | - Anne Müller
- Otto Diels Institute of Organic Chemistry; Christiana Albertina University of Kiel; Otto-Hahn-Platz 3-4 24118 Kiel Germany
| | - Katharina Kolbe
- Otto Diels Institute of Organic Chemistry; Christiana Albertina University of Kiel; Otto-Hahn-Platz 3-4 24118 Kiel Germany
| | - Sophia Boden
- Department for Organic Chemistry and Macromolecular Chemistry; Heinrich-Heine-Universität; Universitätsstraße 1 40225 Düsseldorf Germany
| | - Claudia Fessele
- Otto Diels Institute of Organic Chemistry; Christiana Albertina University of Kiel; Otto-Hahn-Platz 3-4 24118 Kiel Germany
| | - Thisbe K. Lindhorst
- Otto Diels Institute of Organic Chemistry; Christiana Albertina University of Kiel; Otto-Hahn-Platz 3-4 24118 Kiel Germany
| | - Marcus Weber
- Department of Numerical Mathematics; Zuse Institute Berlin (ZIB); Takustr. 7 14195 Berlin Germany
- Department of Mathematics and Computer Science; Freie Universität Berlin; Arnimallee 6 14195 Berlin Germany
| | - Laura Hartmann
- Department for Organic Chemistry and Macromolecular Chemistry; Heinrich-Heine-Universität; Universitätsstraße 1 40225 Düsseldorf Germany
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6
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Mydock-McGrane LK, Hannan TJ, Janetka JW. Rational design strategies for FimH antagonists: new drugs on the horizon for urinary tract infection and Crohn's disease. Expert Opin Drug Discov 2017; 12:711-731. [PMID: 28506090 DOI: 10.1080/17460441.2017.1331216] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION The bacterial adhesin FimH is a virulence factor and an attractive therapeutic target for urinary tract infection (UTI) and Crohn's Disease (CD). Located on type 1 pili of uropathogenic E. coli (UPEC), the FimH adhesin plays an integral role in the pathogenesis of UPEC. Recent efforts have culminated in the development of small-molecule mannoside FimH antagonists that target the mannose-binding lectin domain of FimH, inhibiting its function and preventing UPEC from binding mannosylated host cells in the bladder, thereby circumventing infection. Areas covered: The authors describe the structure-guided design of mannoside ligands, and review the structural biology of the FimH lectin domain. Additionally, they discuss the lead optimization of mannosides for therapeutic application in UTI and CD, and describe various assays used to measure mannoside potency in vitro and mouse models used to determine efficacy in vivo. Expert opinion: To date, mannoside optimization has led to a diverse set of small-molecule FimH antagonists with oral bioavailability. With clinical trials already initiated in CD and on the horizon for UTI, it is the authors, opinion that mannosides will be a 'first-in-class' treatment strategy for UTI and CD, and will pave the way for treatment of other Gram-negative bacterial infections.
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Affiliation(s)
| | | | - James W Janetka
- b Department of Biochemistry and Molecular Biophysics , Washington University School of Medicine , Saint Louis , MO , USA
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7
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2011-2012. MASS SPECTROMETRY REVIEWS 2017; 36:255-422. [PMID: 26270629 DOI: 10.1002/mas.21471] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
Abstract
This review is the seventh update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2012. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, and fragmentation are covered in the first part of the review and applications to various structural types constitute the remainder. The main groups of compound are oligo- and poly-saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2015 Wiley Periodicals, Inc. Mass Spec Rev 36:255-422, 2017.
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Affiliation(s)
- David J Harvey
- Department of Biochemistry, Oxford Glycobiology Institute, University of Oxford, Oxford, OX1 3QU, UK
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8
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Müller C, Despras G, Lindhorst TK. Organizing multivalency in carbohydrate recognition. Chem Soc Rev 2016; 45:3275-302. [DOI: 10.1039/c6cs00165c] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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9
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Cecioni S, Imberty A, Vidal S. Glycomimetics versus Multivalent Glycoconjugates for the Design of High Affinity Lectin Ligands. Chem Rev 2014; 115:525-61. [DOI: 10.1021/cr500303t] [Citation(s) in RCA: 381] [Impact Index Per Article: 38.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Samy Cecioni
- CERMAV, Université Grenoble Alpes and CNRS, BP 53, F-38041 Grenoble Cedex 9, France
- Institut
de Chimie et Biochimie Moléculaires et Supramoléculaires,
Laboratoire de Chimie Organique 2 - Glycochimie, UMR 5246, Université Lyon 1 and CNRS, 43 Boulevard du 11 Novembre 1918, F-69622, Villeurbanne, France
| | - Anne Imberty
- CERMAV, Université Grenoble Alpes and CNRS, BP 53, F-38041 Grenoble Cedex 9, France
| | - Sébastien Vidal
- Institut
de Chimie et Biochimie Moléculaires et Supramoléculaires,
Laboratoire de Chimie Organique 2 - Glycochimie, UMR 5246, Université Lyon 1 and CNRS, 43 Boulevard du 11 Novembre 1918, F-69622, Villeurbanne, France
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10
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Chabre YM, Papadopoulos A, Arnold AA, Roy R. Synthesis and solvodynamic diameter measurements of closely related mannodendrimers for the study of multivalent carbohydrate-protein interactions. Beilstein J Org Chem 2014; 10:1524-35. [PMID: 25165490 PMCID: PMC4144466 DOI: 10.3762/bjoc.10.157] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 06/11/2014] [Indexed: 12/11/2022] Open
Abstract
This paper describes the synthesis of three closely related families of mannopyranoside-containing dendrimers for the purpose of studying subtle structural parameters involved in the measurements of multivalent carbohydrate-protein binding interactions. Toward this goal, two trimers 5 and 9, three 9-mers 12, 17, 21, and one 27-mer 23, varying by the number of atoms separating the anomeric and the core carbons, were synthesized using azide-alkyne cycloaddition (CuAAc). Compound 23 was prepared by an efficient convergent strategy. The sugar precursors consisted of either a 2-azidoethyl (3) or a prop-2-ynyl α-D-mannopyranoside (7) derivative. The solvodynamic diameters of 9-mer 12, 17, and 21 were determined by pulsed-field-gradient-stimulated echo (PFG-STE) NMR experiments and were found to be 3.0, 2.5, and 3.4 nm, respectively.
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Affiliation(s)
- Yoann M Chabre
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, Québec, Canada H3C 3P8
| | - Alex Papadopoulos
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, Québec, Canada H3C 3P8
| | - Alexandre A Arnold
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, Québec, Canada H3C 3P8
| | - René Roy
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, Québec, Canada H3C 3P8
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11
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Car Ž, Hrenar T, Petrović Peroković V, Ribić R, Seničar M, Tomić S. MannosylatedN-Aryl Substituted 3-Hydroxypyridine-4-Ones: Synthesis, Hemagglutination Inhibitory Properties, and Molecular Modeling. Chem Biol Drug Des 2014; 84:393-401. [DOI: 10.1111/cbdd.12329] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 02/19/2014] [Accepted: 03/12/2014] [Indexed: 01/30/2023]
Affiliation(s)
- Željka Car
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Tomica Hrenar
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Vesna Petrović Peroković
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Rosana Ribić
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Mateja Seničar
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
| | - Srđanka Tomić
- Department of Chemistry; Faculty of Science; University of Zagreb; Horvatovac 102a HR-10000 Zagreb Croatia
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12
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Krachler AM, Orth K. Targeting the bacteria-host interface: strategies in anti-adhesion therapy. Virulence 2014; 4:284-94. [PMID: 23799663 PMCID: PMC3710331 DOI: 10.4161/viru.24606] [Citation(s) in RCA: 149] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Bacterial infections are a major cause of morbidity and mortality worldwide and are increasingly problematic to treat due to the rise in antibiotic-resistant strains. It becomes more and more challenging to develop new antimicrobials that are able to withstand the ever-increasing repertoire of bacterial resistance mechanisms. This necessitates the development of alternative approaches to prevent and treat bacterial infections. One of the first steps during bacterial infection is adhesion of the pathogen to host cells. A pathogen’s ability to colonize and invade host tissues strictly depends on this process. Thus, interference with adhesion (anti-adhesion therapy) is an efficient way to prevent or treat bacterial infections. As a basis to present different strategies to interfere with pathogen adhesion, this review briefly introduces general concepts of bacterial attachment to host cells. We further discuss advantages and disadvantages of anti-adhesion treatments and issues that are in need of improvement so as to make anti-adhesion compounds a more broadly applicable alternative to conventional antimicrobials.
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Affiliation(s)
- Anne Marie Krachler
- Institute of Microbiology and Infection, University of Birmingham, Birmingham, UK
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13
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Wehner JW, Lindhorst TK. S-Fluorenylmethyl protection of the cysteine side chain upon N(α)-Fmoc deprotection. Beilstein J Org Chem 2012; 8:2149-55. [PMID: 23365626 PMCID: PMC3555517 DOI: 10.3762/bjoc.8.242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Accepted: 11/01/2012] [Indexed: 01/21/2023] Open
Abstract
Deprotection of an N(α)-Fmoc-protected glycocysteine derivative 7 with an excess of morpholine unexpectedly led to the fluorenylmethyl-protected thioether 8 in high yield. The suggested mechanism for this reaction comprises the addition of the cysteine thiolate on the exocyclic double bond of dibenzofulvene, which is formed during Fmoc deprotection. The influence of base concentration on this transprotection reaction was studied.
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Affiliation(s)
- Johannes W Wehner
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3/4, 24098 Kiel, Germany
| | - Thisbe K Lindhorst
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3/4, 24098 Kiel, Germany
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14
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Lee DJ, Yang SH, Williams GM, Brimble MA. Synthesis of Multivalent Neoglyconjugates of MUC1 by the Conjugation of Carbohydrate-Centered, Triazole-Linked Glycoclusters to MUC1 Peptides Using Click Chemistry. J Org Chem 2012; 77:7564-71. [DOI: 10.1021/jo3013435] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dong Jun Lee
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| | - Sung-Hyun Yang
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| | - Geoffrey M. Williams
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| | - Margaret A. Brimble
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
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15
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Lütteke T. The use of glycoinformatics in glycochemistry. Beilstein J Org Chem 2012; 8:915-29. [PMID: 23015842 PMCID: PMC3388882 DOI: 10.3762/bjoc.8.104] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Accepted: 05/29/2012] [Indexed: 01/10/2023] Open
Abstract
Glycoinformatics is a small but growing branch of bioinformatics and chemoinformatics. Various resources are now available that can be of use to glycobiologists, but also to chemists who work on the synthesis or analysis of carbohydrates. This article gives an overview of existing glyco-specific databases and tools, with a focus on their application to glycochemistry: Databases can provide information on candidate glycan structures for synthesis, or on glyco-enzymes that can be used to synthesize carbohydrates. Statistical analyses of glycan databases help to plan glycan synthesis experiments. 3D-Structural data of protein-carbohydrate complexes are used in targeted drug design, and tools to support glycan structure analysis aid with quality control. Specific problems of glycoinformatics compared to bioinformatics for genomics or proteomics, especially concerning integration and long-term maintenance of the existing glycan databases, are also discussed.
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Affiliation(s)
- Thomas Lütteke
- Justus-Liebig-University Gießen, Institute of Veterinary Physiology and Biochemistry, Frankfurter Str. 100, 35392 Gießen, Germany
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16
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Westerlind U. Synthetic glycopeptides and glycoproteins with applications in biological research. Beilstein J Org Chem 2012; 8:804-18. [PMID: 23015828 PMCID: PMC3388868 DOI: 10.3762/bjoc.8.90] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2012] [Accepted: 05/22/2012] [Indexed: 12/21/2022] Open
Abstract
Over the past few years, synthetic methods for the preparation of complex glycopeptides have been drastically improved. The need for homogenous glycopeptides and glycoproteins with defined chemical structures to study diverse biological phenomena further enhances the development of methodologies. Selected recent advances in synthesis and applications, in which glycopeptides or glycoproteins serve as tools for biological studies, are reviewed. The importance of specific antibodies directed to the glycan part, as well as the peptide backbone has been realized during the development of synthetic glycopeptide-based anti-tumor vaccines. The fine-tuning of native chemical ligation (NCL), expressed protein ligation (EPL), and chemoenzymatic glycosylation techniques have all together enabled the synthesis of functional glycoproteins. The synthesis of structurally defined, complex glycopeptides or glyco-clusters presented on natural peptide backbones, or mimics thereof, offer further possibilities to study protein-binding events.
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Affiliation(s)
- Ulrika Westerlind
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V., ISAS - Leibniz Institute for Analytical Sciences, Otto-Hahn-Str. 6b, D-44227 Dortmund, Germany, Tel: (+49)231-1392 4215
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17
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Han Z, Pinkner JS, Ford B, Chorell E, Crowley JM, Cusumano CK, Campbell S, Henderson JP, Hultgren SJ, Janetka JW. Lead optimization studies on FimH antagonists: discovery of potent and orally bioavailable ortho-substituted biphenyl mannosides. J Med Chem 2012; 55:3945-59. [PMID: 22449031 DOI: 10.1021/jm300165m] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein, we describe the X-ray structure-based design and optimization of biaryl mannoside FimH inhibitors. Diverse modifications to the biaryl ring to improve druglike physical and pharmacokinetic properties of mannosides were assessed for FimH binding affinity based on their effects on hemagglutination and biofilm formation along with direct FimH binding assays. Substitution on the mannoside phenyl ring ortho to the glycosidic bond results in large potency enhancements several-fold higher than those of corresponding unsubstituted matched pairs and can be rationalized from increased hydrophobic interactions with the FimH hydrophobic ridge (Ile13) or "tyrosine gate" (Tyr137 and Tyr48) also lined by Ile52. The lead mannosides have increased metabolic stability and oral bioavailability as determined from in vitro PAMPA predictive model of cellular permeability and in vivo pharmacokinetic studies in mice, thereby representing advanced preclinical candidates with promising potential as novel therapeutics for the clinical treatment and prevention of recurring urinary tract infections.
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Affiliation(s)
- Zhenfu Han
- Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, 660 S. Euclid Avenue, Saint Louis, Missouri 63110, USA
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18
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Weissenborn MJ, Castangia R, Wehner JW, Šardzík R, Lindhorst TK, Flitsch SL. Oxo-ester mediated native chemical ligation on microarrays: an efficient and chemoselective coupling methodology. Chem Commun (Camb) 2012; 48:4444-6. [PMID: 22456682 DOI: 10.1039/c2cc30844d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report a highly efficient and selective method for the coupling of peptides and glycoconjugates bearing N-terminal cysteines to activated surfaces. This chemoselective method generates stable amide linkages without using any thiol additives.
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Affiliation(s)
- Martin J Weissenborn
- School of Chemistry & Manchester Interdisciplinary Biocentre, The University of Manchester, 131 Princess Street, Manchester M17DN, UK
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19
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Kovačević M, Barišić L, Ribić R, Peroković VP, Tomić S, Rapić V. Ferrocene conjugates with mannose: synthesis and influence of ferrocene aglycon on mannose-mediated adhesion of Escherichia coli. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.1869] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Monika Kovačević
- Department of Organic Chemistry; Faculty of Food Technology and Biotechnology; Pierottijeva 6; HR-10000; Zagreb; Croatia
| | - Lidija Barišić
- Department of Organic Chemistry; Faculty of Food Technology and Biotechnology; Pierottijeva 6; HR-10000; Zagreb; Croatia
| | - Rosana Ribić
- Department of Chemistry; Faculty of Science; Horvatovac 102a; HR-10000; Zagreb; Croatia
| | | | - Srđanka Tomić
- Department of Chemistry; Faculty of Science; Horvatovac 102a; HR-10000; Zagreb; Croatia
| | - Vladimir Rapić
- Department of Organic Chemistry; Faculty of Food Technology and Biotechnology; Pierottijeva 6; HR-10000; Zagreb; Croatia
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