1
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Hatton N, Nabarro J, Yates NDJ, Parkin A, Wilson LG, Baumann CG, Fascione MA. Mannose-Presenting "Glyco-Colicins" Convert the Bacterial Cell Surface into a Multivalent Adsorption Site for Adherent Bacteria. JACS AU 2024; 4:2122-2129. [PMID: 38938796 PMCID: PMC11200225 DOI: 10.1021/jacsau.4c00365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 06/10/2024] [Accepted: 06/11/2024] [Indexed: 06/29/2024]
Abstract
Biofilm formation is integral to the pathogenesis of numerous adherent bacteria and contributes to antimicrobial resistance (AMR). The rising threat of AMR means the need to develop novel nonbactericidal antiadhesion approaches against such bacteria is more urgent than ever. Both adherent-invasive Escherichia coli (AIEC, implicated in inflammatory bowel disease) and uropathogenic E. coli (UPEC, responsible for ∼80% of urinary tract infections) adhere to terminal mannose sugars on epithelial glycoproteins through the FimH adhesin on their type 1 pilus. Although mannose-based inhibitors have previously been explored to inhibit binding of adherent bacteria to epithelial cells, this approach has been limited by monovalent carbohydrate-protein interactions. Herein, we pioneer a novel approach to this problem through the preparation of colicin E9 bioconjugates that bind to the abundant BtuB receptor in the outer membrane of bacteria, which enables multivalent presentation of functional motifs on the cell surface. We show these bioconjugates label the surface of live E. coli and furthermore demonstrate that mannose-presenting "glyco-colicins" induce E. coli aggregation, thereby using the bacteria, itself, as a multivalent platform for mannose display, which triggers binding to adjacent FimH-presenting bacteria.
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Affiliation(s)
- Natasha
E. Hatton
- Department
of Chemistry, University of York, York, YO10 5DD, United Kingdom
| | - Joe Nabarro
- Department
of Chemistry, University of York, York, YO10 5DD, United Kingdom
| | | | - Alison Parkin
- Department
of Chemistry, University of York, York, YO10 5DD, United Kingdom
| | - Laurence G. Wilson
- Department
of Physics, University of York, York, YO10 5DD, United Kingdom
| | | | - Martin A. Fascione
- Department
of Chemistry, University of York, York, YO10 5DD, United Kingdom
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2
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Mohammed AF, Othman SA, Abou-Ghadir OF, Kotb AA, Mostafa YA, El-Mokhtar MA, Abdu-Allah HHM. Design, synthesis, biological evaluation and docking study of some new aryl and heteroaryl thiomannosides as FimH antagonists. Bioorg Chem 2024; 145:107258. [PMID: 38447463 DOI: 10.1016/j.bioorg.2024.107258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 03/08/2024]
Abstract
FimH is a mannose-recognizing lectin that is expressed by Escherichia coli guiding its ability to adhere and infect cells. It is involved in pathogenesis of urinary tract infections and Chron's disease. Several X-ray structure-guided ligand design studies were extensively utilized in the discovery and optimization of small molecule aryl mannoside FimH antagonists. These antagonists retain key specific interactions of the mannose scaffolds with the FimH carbohydrate recognition domains. Thiomannosides are attractive and stable scaffolds, and this work reports the synthesis of some of their new aryl and heteroaryl derivatives as FimH antagonists. FimH-competitive binding assays as well as biofilm inhibition of the new compounds (24-32) were determined in comparison with the reference n-heptyl α-d-mannopyranoside (HM). The affinity among these compounds was found to be governed by the structure of the aryl and heteroarylf aglycones. Two compounds 31 and 32 revealed higher activity than HM. Molecular docking and total hydrophobic to topological polar surface area ratio calculations attributed to explain the obtained biological results. Finally, the SAR study suggested that introducing an aryl or heteroaryl aglycone of sufficient hydrophobicity and of proper orientation within the tyrosine binding site considerably enhance binding affinity. The potent and synthetically feasible FimH antagonists described herein hold potential as leads for the development of sensors for detection of E. coli and treatment of its diseases.
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Affiliation(s)
- Anber F Mohammed
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Shimaa A Othman
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Ola F Abou-Ghadir
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Ahmed A Kotb
- Department of Microbiology and Immunology, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
| | - Yaser A Mostafa
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Mohamed A El-Mokhtar
- Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Hajjaj H M Abdu-Allah
- Pharmaceutical Organic Chemistry Department, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt.
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3
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Zheng L, Duan SL, Dai YC, Wu SC. Role of adherent invasive Escherichia coli in pathogenesis of inflammatory bowel disease. World J Clin Cases 2022; 10:11671-11689. [PMID: 36405271 PMCID: PMC9669839 DOI: 10.12998/wjcc.v10.i32.11671] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 09/04/2022] [Accepted: 10/11/2022] [Indexed: 02/05/2023] Open
Abstract
Gut microbiota imbalances play an important role in inflammatory bowel disease (IBD), but no single pathogenic microorganism critical to IBD that is specific to the IBD terminal ileum mucosa or can invade intestinal epithelial cells has been found. Invasive Escherichia coli (E. coli) adhesion to macrophages is considered to be closely related to the pathogenesis of inflammatory bowel disease. Further study of the specific biological characteristics of adherent invasive E. coli (AIEC) may contribute to a further understanding of IBD pathogenesis. This review explores the relationship between AIEC and the intestinal immune system, discusses the prevalence and relevance of AIEC in Crohn's disease and ulcerative colitis patients, and describes the relationship between AIEC and the disease site, activity, and postoperative recurrence. Finally, we highlight potential therapeutic strategies to attenuate AIEC colonization in the intestinal mucosa, including the use of phage therapy, antibiotics, and anti-adhesion molecules. These strategies may open up new avenues for the prevention and treatment of IBD in the future.
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Affiliation(s)
- Lie Zheng
- Department of Gastroenterology, Shaanxi Provincial Hospital of Traditional Chinese Medicine, Xi’an 322000, Shaanxi Province, China
| | - Sheng-Lei Duan
- Department of Gastroenterology, Shaanxi Provincial Hospital of Traditional Chinese Medicine, Xi’an 322000, Shaanxi Province, China
| | - Yan-Cheng Dai
- Department of Gastroenterology, Shanghai Traditional Chinese Medicine Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China
| | - Shi-Cheng Wu
- Department of Proctology, Gansu Academy of Traditional Chinese Medicine, Gansu Hospital of Traditional Chinese Medicine, Lanzhou 730050, Gansu Province, China
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4
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Mousavifar L, Roy R. Recent development in the design of small 'drug-like' and nanoscale glycomimetics against Escherichia coli infections. Drug Discov Today 2021; 26:2124-2137. [PMID: 33667654 DOI: 10.1016/j.drudis.2021.02.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/19/2021] [Accepted: 02/24/2021] [Indexed: 12/25/2022]
Abstract
Glycoconjugates are involved in several pathological processes. Glycomimetics that can favorably emulate complex carbohydrate structures, while competing with natural ligands as inhibitors, are gaining considerable attention owing to their improved hydrolytic stability, binding affinity, and pharmacokinetic (PK) properties. Of particular interest are the families of α-d-mannopyranoside analogs, which can be used as inhibitors against adherent invasive Escherichia coli infections. Bacterial resistance to modern antibiotics triggers the search for new alternative antibacterial strategies that are less susceptible to acquiring resistance. In this review, we highlight recent progress in the chemical syntheses of this family of compounds, one of which having reached clinical trials against Crohn's disease (CD).
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Affiliation(s)
- Leila Mousavifar
- Department of Chemistry, Université du Québec à Montréal, PO Box 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada
| | - René Roy
- Department of Chemistry, Université du Québec à Montréal, PO Box 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada; INRS - Institut Armand-Frappier, Université du Québec, 531 Boul. des Prairies, Laval, QC H7V 1B7, Canada.
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5
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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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6
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Kaszás T, Cservenyák I, Juhász-Tóth É, Kulcsár AE, Granatino P, Nilsson UJ, Somsák L, Tóth M. Coupling of N-tosylhydrazones with tetrazoles: synthesis of 2-β-D-glycopyranosylmethyl-5-substituted-2 H-tetrazole type glycomimetics. Org Biomol Chem 2021; 19:605-618. [PMID: 33355586 DOI: 10.1039/d0ob02248a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Coupling reactions of O-peracylated 2,6-anhydro-aldose tosylhydrazones (C-(β-d-glycopyranosyl)formaldehyde tosylhydrazones) with tetrazoles were studied under metal-free conditions using thermic or microwave activation in the presence of different bases. The reactions proved highly regioselective and gave the corresponding, up-to-now unknown 2-β-d-glycopyranosylmethyl-2H-tetrazoles in 7-67% yields. The method can be applied to get new types of disaccharide mimetics, 5-glycosyl-2-glycopyranosylmethyl-2H-tetrazoles, as well. Galectin binding studies with C-(β-d-galactopyranosyl)formaldehyde tosylhydrazone and 2-(β-d-galactopyranosylmethyl)-5-phenyl-2H-tetrazole revealed no significant inhibition of any of these lectins.
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Affiliation(s)
- Tímea Kaszás
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - Ivett Cservenyák
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - Éva Juhász-Tóth
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - Andrea E Kulcsár
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - Paola Granatino
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - Ulf J Nilsson
- Centre for Analysis and Synthesis, Lund University, Lund, Sweden
| | - László Somsák
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
| | - Marietta Tóth
- Department of Organic Chemistry, University of Debrecen, PO Box 400, H-4002 Debrecen, Hungary.
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7
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Magala P, Klevit RE, Thomas WE, Sokurenko EV, Stenkamp RE. RMSD analysis of structures of the bacterial protein FimH identifies five conformations of its lectin domain. Proteins 2019; 88:593-603. [PMID: 31622514 DOI: 10.1002/prot.25840] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/07/2019] [Accepted: 10/12/2019] [Indexed: 01/14/2023]
Abstract
FimH is a bacterial adhesin protein located at the tip of Escherichia coli fimbria that functions to adhere bacteria to host cells. Thus, FimH is a critical factor in bacterial infections such as urinary tract infections and is of interest in drug development. It is also involved in vaccine development and as a model for understanding shear-enhanced catch bond cell adhesion. To date, over 60 structures have been deposited in the Protein Data Bank showing interactions between FimH and mannose ligands, potential inhibitors, and other fimbrial proteins. In addition to providing insights about ligand recognition and fimbrial assembly, these structures provide insights into conformational changes in the two domains of FimH that are critical for its function. To gain further insights into these structural changes, we have superposed FimH's mannose binding lectin domain in all these structures and categorized the structures into five groups of lectin domain conformers using RMSD as a metric. Many structures also include the pilin domain, which anchors FimH to the fimbriae and regulates the conformation and function of the lectin domain. For these structures, we have also compared the relative orientations of the two domains. These structural analyses enhance our understanding of the conformational changes associated with FimH ligand binding and domain-domain interactions, including its catch bond behavior through allosteric action of force in bacterial adhesion.
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Affiliation(s)
- Pearl Magala
- Department of Biochemistry, University of Washington, Seattle, WA.,Biomolecular Structure Center, University of Washington, Seattle, WA
| | - Rachel E Klevit
- Department of Biochemistry, University of Washington, Seattle, WA.,Biomolecular Structure Center, University of Washington, Seattle, WA
| | - Wendy E Thomas
- Department of Bioengineering, University of Washington, Seattle, WA
| | | | - Ronald E Stenkamp
- Department of Biochemistry, University of Washington, Seattle, WA.,Biomolecular Structure Center, University of Washington, Seattle, WA.,Department of Biological Structure, University of Washington, Seattle, WA
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8
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Fu RG, Wang Y, Xia F, Zhang HL, Sun Y, Yang DW, Wang YW, Yin P. Synthesis of 2-Amino-5-acylthiazoles by a Tertiary Amine-Promoted One-Pot Three-Component Cascade Cyclization Using Elemental Sulfur as a Sulfur Source. J Org Chem 2019; 84:12237-12245. [PMID: 31480831 DOI: 10.1021/acs.joc.9b02032] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel one-pot three-component cascade cyclization strategy for the synthesis of 2-amino-5-acylthiazoles using enaminones, cyanamide, and elemental sulfur has been developed. The reported methods have demonstrated good tolerance of various functional groups. Up to 28 2-amino-5-acylthiazole compounds bearing diverse structural differences were successfully synthesized from easily obtained starting materials with moderate to excellent yields. Our method provides an effective way for the access of valuable and potentially bioactive 2-amino-5-acylthiazole derivatives.
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Affiliation(s)
- Rong-Geng Fu
- Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan Key Laboratory of Druggability and Preparation Modification for Traditional Chinese Medicine and TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy , Hunan University of Chinese Medicine , Changsha 410208 , People's Republic of China
| | - Yong Wang
- Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan Key Laboratory of Druggability and Preparation Modification for Traditional Chinese Medicine and TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy , Hunan University of Chinese Medicine , Changsha 410208 , People's Republic of China
| | - Fei Xia
- Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan Key Laboratory of Druggability and Preparation Modification for Traditional Chinese Medicine and TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy , Hunan University of Chinese Medicine , Changsha 410208 , People's Republic of China
| | - Hao-Lin Zhang
- Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan Key Laboratory of Druggability and Preparation Modification for Traditional Chinese Medicine and TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy , Hunan University of Chinese Medicine , Changsha 410208 , People's Republic of China
| | - Yuan Sun
- Department of Chemistry and Biochemistry , The Ohio State University , Columbus , Ohio 43210 , United States
| | - Duo-Wen Yang
- Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan Key Laboratory of Druggability and Preparation Modification for Traditional Chinese Medicine and TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy , Hunan University of Chinese Medicine , Changsha 410208 , People's Republic of China
| | - Ye-Wei Wang
- Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province, Hunan Key Laboratory of Druggability and Preparation Modification for Traditional Chinese Medicine and TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy , Hunan University of Chinese Medicine , Changsha 410208 , People's Republic of China
| | - Peng Yin
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering , Hunan Normal University , Changsha , Hunan 410081 , People's Republic of China
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9
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Strategies for the Development of Glycomimetic Drug Candidates. Pharmaceuticals (Basel) 2019; 12:ph12020055. [PMID: 30978966 PMCID: PMC6631974 DOI: 10.3390/ph12020055] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/03/2019] [Accepted: 04/09/2019] [Indexed: 02/06/2023] Open
Abstract
Carbohydrates are a structurally-diverse group of natural products which play an important role in numerous biological processes, including immune regulation, infection, and cancer metastasis. Many diseases have been correlated with changes in the composition of cell-surface glycans, highlighting their potential as a therapeutic target. Unfortunately, native carbohydrates suffer from inherently weak binding affinities and poor pharmacokinetic properties. To enhance their usefulness as drug candidates, 'glycomimetics' have been developed: more drug-like compounds which mimic the structure and function of native carbohydrates. Approaches to improve binding affinities (e.g., deoxygenation, pre-organization) and pharmacokinetic properties (e.g., limiting metabolic degradation, improving permeability) have been highlighted in this review, accompanied by relevant examples. By utilizing these strategies, high-affinity ligands with optimized properties can be rationally designed and used to address therapies for novel carbohydrate-binding targets.
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10
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Krammer EM, de Ruyck J, Roos G, Bouckaert J, Lensink MF. Targeting Dynamical Binding Processes in the Design of Non-Antibiotic Anti-Adhesives by Molecular Simulation-The Example of FimH. Molecules 2018; 23:E1641. [PMID: 29976867 PMCID: PMC6099838 DOI: 10.3390/molecules23071641] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Revised: 06/29/2018] [Accepted: 07/02/2018] [Indexed: 12/11/2022] Open
Abstract
Located at the tip of type I fimbria of Escherichia coli, the bacterial adhesin FimH is responsible for the attachment of the bacteria to the (human) host by specifically binding to highly-mannosylated glycoproteins located on the exterior of the host cell wall. Adhesion represents a necessary early step in bacterial infection and specific inhibition of this process represents a valuable alternative pathway to antibiotic treatments, as such anti-adhesive drugs are non-intrusive and are therefore unlikely to induce bacterial resistance. The currently available anti-adhesives with the highest affinities for FimH still feature affinities in the nanomolar range. A prerequisite to develop higher-affinity FimH inhibitors is a molecular understanding of the FimH-inhibitor complex formation. The latest insights in the formation process are achieved by combining several molecular simulation and traditional experimental techniques. This review summarizes how molecular simulation contributed to the current knowledge of the molecular function of FimH and the importance of dynamics in the inhibitor binding process, and highlights the importance of the incorporation of dynamical aspects in (future) drug-design studies.
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Affiliation(s)
- Eva-Maria Krammer
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
| | - Jerome de Ruyck
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
| | - Goedele Roos
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
| | - Julie Bouckaert
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
| | - Marc F Lensink
- Unite de Glycobiologie Structurale et Fonctionnelle, UMR 8576 of the Centre National de la Recherche Scientifique and the University of Lille, 50 Avenue de Halley, 59658 Villeneuve d'Ascq, France.
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11
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Ding Y, Vara Prasad CVNS, Ding C, Wang B. Synthesis of carbohydrate conjugated 6A,6D-bifunctionalized β cyclodextrin derivatives as potential liver cancer drug carriers. Carbohydr Polym 2017; 181:957-963. [PMID: 29254060 DOI: 10.1016/j.carbpol.2017.11.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 11/02/2017] [Accepted: 11/15/2017] [Indexed: 10/18/2022]
Abstract
Galactosyl and lactosyl conjugated 6A,6D-bifunctionlized β cyclodextrin derivatives were designed and synthesized as the potential liver cancer drug carriers through SN2 replacement and click reactions in order to increase liver cancer drug's targeting ability, solubility and stability. The synthetic methods and strategies to obtain the designed compounds were discussed.
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Affiliation(s)
- Yili Ding
- Life Science Department, Foshan University, Foshan, Guangdong, 528000, PR China.
| | | | - Charles Ding
- Piedmont Hill High School, San Jose, CA, 95132, USA
| | - Bingyun Wang
- Life Science Department, Foshan University, Foshan, Guangdong, 528000, PR China
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12
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Abstract
The human gut is home to trillions of bacteria and provides the scaffold for one of the most complex microbial ecosystems in nature. Inflammatory bowel diseases, such as Crohn's disease, involve a compositional shift in the microbial constituents of this ecosystem with a marked expansion of Enterobacteriaceae, particularly Escherichia coli. Adherent-invasive E. coli (AIEC) strains are frequently isolated from the biopsies of Crohn's patients, where their ability to elicit inflammation suggests a possible role in Crohn's pathology. Here, we consider the origins of the AIEC pathovar and discuss how risk factors associated with Crohn's disease might influence AIEC colonization dynamics within the host to alter the overall disease potential of the microbial community.
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Affiliation(s)
- Wael Elhenawy
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada,Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Alexander Oberc
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada,Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada
| | - Brian K. Coombes
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada,Michael G. DeGroote Institute for Infectious Disease Research, Hamilton, ON, Canada,CONTACT Brian K. Coombes , Department of Biochemistry and Biomedical Sciences, McMaster University, MDCL 2319, Hamilton, ON Canada L8S 4K1
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13
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Sivignon A, Bouckaert J, Bernard J, Gouin SG, Barnich N. The potential of FimH as a novel therapeutic target for the treatment of Crohn’s disease. Expert Opin Ther Targets 2017; 21:837-847. [DOI: 10.1080/14728222.2017.1363184] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Adeline Sivignon
- M2iSH, UMR 1071 Inserm, INRA USC-2018, Institut Universitaire Technologique, Université Clermont Auvergne, Clermont-Ferrand 63001, France
| | - Julie Bouckaert
- Univ. Lille, CNRS, UMR 8576 – UGSF – Unité de Glycobiologie Structurale et Fonctionnelle, 59000 Lille, France
| | - Julien Bernard
- Université de Lyon, Lyon, France ; INSA-Lyon, Ingénierie des Matériaux Polymères (IMP), Villeurbanne, France ; CNRS, UMR 5223, Ingénierie des Matériaux Polymères, Villeurbanne, France
- INSA-Lyon, IMP, Villeurbanne, France
- UMR 5223, Ingénierie des Matériaux Polymères, CNRS, Villeurbanne, France
| | - Sebastien G. Gouin
- CEISAM, Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation, UMR CNRS 6230, UFR des Sciences et des Techniques, LUNAM Université, Nantes Cedex 3, France
| | - Nicolas Barnich
- M2iSH, UMR 1071 Inserm, INRA USC-2018, Institut Universitaire Technologique, Université Clermont Auvergne, Clermont-Ferrand 63001, France
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14
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Touaibia M, Krammer EM, Shiao TC, Yamakawa N, Wang Q, Glinschert A, Papadopoulos A, Mousavifar L, Maes E, Oscarson S, Vergoten G, Lensink MF, Roy R, Bouckaert J. Sites for Dynamic Protein-Carbohydrate Interactions of O- and C-Linked Mannosides on the E. coli FimH Adhesin. Molecules 2017; 22:molecules22071101. [PMID: 28671638 PMCID: PMC6152123 DOI: 10.3390/molecules22071101] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 06/25/2017] [Accepted: 06/28/2017] [Indexed: 01/28/2023] Open
Abstract
Antagonists of the Escherichia coli type-1 fimbrial adhesin FimH are recognized as attractive alternatives for antibiotic therapies and prophylaxes against acute and recurrent bacterial infections. In this study α-d-mannopyranosides O- or C-linked with an alkyl, alkene, alkyne, thioalkyl, amide, or sulfonamide were investigated to fit a hydrophobic substituent with up to two aryl groups within the tyrosine gate emerging from the mannose-binding pocket of FimH. The results were summarized into a set of structure-activity relationships to be used in FimH-targeted inhibitor design: alkene linkers gave an improved affinity and inhibitory potential, because of their relative flexibility combined with a favourable interaction with isoleucine-52 located in the middle of the tyrosine gate. Of particular interest is a C-linked mannoside, alkene-linked to an ortho-substituted biphenyl that has an affinity similar to its O-mannosidic analog but superior to its para-substituted analog. Docking of its high-resolution NMR solution structure to the FimH adhesin indicated that its ultimate, ortho-placed phenyl ring is able to interact with isoleucine-13, located in the clamp loop that undergoes conformational changes under shear force exerted on the bacteria. Molecular dynamics simulations confirmed that a subpopulation of the C-mannoside conformers is able to interact in this secondary binding site of FimH.
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Affiliation(s)
- Mohamed Touaibia
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, QC H3C 3P8, Canada.
- Department of Chemistry and Biochemistry, Université de Moncton, Moncton, NB E1A 3E9, Canada.
| | - Eva-Maria Krammer
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR8576 du CNRS, Université de Lille, F-59000 Lille, France.
| | - Tze C Shiao
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, QC H3C 3P8, Canada.
| | - Nao Yamakawa
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR8576 du CNRS, Université de Lille, F-59000 Lille, France.
| | - Qingan Wang
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, QC H3C 3P8, Canada.
| | - Anja Glinschert
- Center for Synthesis and Chemical Biology (CSCB), University College Dublin, Belfield, Dublin 4, Ireland.
| | - Alex Papadopoulos
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, QC H3C 3P8, Canada.
| | - Leila Mousavifar
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, QC H3C 3P8, Canada.
| | - Emmanuel Maes
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR8576 du CNRS, Université de Lille, F-59000 Lille, France.
| | - Stefan Oscarson
- Center for Synthesis and Chemical Biology (CSCB), University College Dublin, Belfield, Dublin 4, Ireland.
| | - Gerard Vergoten
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR8576 du CNRS, Université de Lille, F-59000 Lille, France.
| | - Marc F Lensink
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR8576 du CNRS, Université de Lille, F-59000 Lille, France.
| | - René Roy
- Pharmaqam, Department of Chemistry, Université du Québec à Montréal, P. O. Box 8888, Succ. Centre-ville, Montréal, QC H3C 3P8, Canada.
| | - Julie Bouckaert
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR8576 du CNRS, Université de Lille, F-59000 Lille, France.
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