1
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Mach N. The forecasting power of the mucin-microbiome interplay in livestock respiratory diseases. Vet Q 2024; 44:1-18. [PMID: 38606662 PMCID: PMC11018052 DOI: 10.1080/01652176.2024.2340003] [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: 05/23/2023] [Accepted: 03/31/2024] [Indexed: 04/13/2024] Open
Abstract
Complex respiratory diseases are a significant challenge for the livestock industry worldwide. These diseases considerably impact animal health and welfare and cause severe economic losses. One of the first lines of pathogen defense combines the respiratory tract mucus, a highly viscous material primarily composed of mucins, and a thriving multi-kingdom microbial ecosystem. The microbiome-mucin interplay protects from unwanted substances and organisms, but its dysfunction may enable pathogenic infections and the onset of respiratory disease. Emerging evidence also shows that noncoding regulatory RNAs might modulate the structure and function of the microbiome-mucin relationship. This opinion paper unearths the current understanding of the triangular relationship between mucins, the microbiome, and noncoding RNAs in the context of respiratory infections in animals of veterinary interest. There is a need to look at these molecular underpinnings that dictate distinct health and disease outcomes to implement effective prevention, surveillance, and timely intervention strategies tailored to the different epidemiological contexts.
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Affiliation(s)
- Núria Mach
- IHAP, Université de Toulouse, INRAE, ENVT, Toulouse, France
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2
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Alvarado-Melendez EI, de Jong H, Hartman JEM, Ong JY, Wösten MMSM, Wennekes T. Glycoengineering with neuraminic acid analogs to label lipooligosaccharides and detect native sialyltransferase activity in gram-negative bacteria. Glycobiology 2024; 34:cwae071. [PMID: 39244665 DOI: 10.1093/glycob/cwae071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 08/27/2024] [Accepted: 09/06/2024] [Indexed: 09/10/2024] Open
Abstract
Lipooligosaccharides are the most abundant cell surface glycoconjugates on the outer membrane of Gram-negative bacteria. They play important roles in host-microbe interactions. Certain Gram-negative pathogenic bacteria cap their lipooligosaccharides with the sialic acid, N-acetylneuraminic acid (Neu5Ac), to mimic host glycans that among others protects these bacteria from recognition by the hosts immune system. This process of molecular mimicry is not fully understood and remains under investigated. To explore the functional role of sialic acid-capped lipooligosaccharides at the molecular level, it is important to have tools readily available for the detection and manipulation of both Neu5Ac on glycoconjugates and the involved sialyltransferases, preferably in live bacteria. We and others have shown that the native sialyltransferases of some Gram-negative bacteria can incorporate extracellular unnatural sialic acid nucleotides onto their lipooligosaccharides. We here report on the expanded use of native bacterial sialyltransferases to incorporate neuraminic acids analogs with a reporter group into the lipooligosaccharides of a variety of Gram-negative bacteria. We show that this approach offers a quick strategy to screen bacteria for the expression of functional sialyltransferases and the ability to use exogenous CMP-Neu5Ac to decorate their glycoconjugates. For selected bacteria we also show this strategy complements two other glycoengineering techniques, Metabolic Oligosaccharide Engineering and Selective Exo-Enzymatic Labeling, and that together they provide tools to modify, label, detect and visualize sialylation of bacterial lipooligosaccharides.
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Affiliation(s)
- Erianna I Alvarado-Melendez
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical Research, Utrecht University, Universiteitsweg 99, 3584CG, Utrecht, The Netherlands
| | - Hanna de Jong
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical Research, Utrecht University, Universiteitsweg 99, 3584CG, Utrecht, The Netherlands
| | - Jet E M Hartman
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical Research, Utrecht University, Universiteitsweg 99, 3584CG, Utrecht, The Netherlands
| | - Jun Yang Ong
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical Research, Utrecht University, Universiteitsweg 99, 3584CG, Utrecht, The Netherlands
| | - Marc M S M Wösten
- Department of Biomolecular Health Sciences, Division Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584CL, Utrecht, The Netherlands
| | - Tom Wennekes
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical Research, Utrecht University, Universiteitsweg 99, 3584CG, Utrecht, The Netherlands
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3
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Campanero-Rhodes MA, Martí S, Hernández-Ortiz N, Cubero M, Ereño-Orbea J, Ardá A, Jiménez-Barbero J, Ardanuy C, Solís D. Insights into the recognition of hypermucoviscous Klebsiella pneumoniae clinical isolates by innate immune lectins of the Siglec and galectin families. Front Immunol 2024; 15:1436039. [PMID: 39148735 PMCID: PMC11324429 DOI: 10.3389/fimmu.2024.1436039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 07/16/2024] [Indexed: 08/17/2024] Open
Abstract
Klebsiella pneumoniae is an opportunistic bacterium that frequently colonizes the nasopharynx and gastrointestinal tract and can also cause severe infections when invading other tissues, particularly in immunocompromised individuals. Moreover, K. pneumoniae variants exhibiting a hypermucoviscous (HMV) phenotype are usually associated with hypervirulent strains that can produce invasive infections even in immunocompetent individuals. Major carbohydrate structures displayed on the K. pneumoniae surface are the polysaccharide capsule and the lipopolysaccharide, which presents an O-polysaccharide chain in its outermost part. Various capsular and O-chain structures have been described. Of note, production of a thick capsule is frequently observed in HMV variants. Here we examined the surface sugar epitopes of a collection of HMV and non-HMV K. pneumoniae clinical isolates and their recognition by several Siglecs and galectins, two lectin families of the innate immune system, using bacteria microarrays as main tool. No significant differences among isolates in sialic acid content or recognition by Siglecs were observed. In contrast, analysis of the binding of model lectins with diverse carbohydrate-binding specificities revealed striking differences in the recognition by galactose- and mannose-specific lectins, which correlated with the binding or lack of binding of galectins and pointed to the O-chain as the plausible ligand. Fluorescence microscopy and microarray analyses of galectin-9 binding to entire cells and outer membranes of two representative HMV isolates supported the bacteria microarray results. In addition, Western blot analysis of the binding of galectin-9 to outer membranes unveiled protein bands recognized by this galectin, and fingerprint analysis of these bands identified several proteins containing potential O-glycosylation sites, thus broadening the spectrum of possible galectin ligands on the K. pneumoniae surface. Moreover, Siglecs and galectins apparently target different structures on K. pneumoniae surfaces, thereby behaving as non-redundant complementary tools of the innate immune system.
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Affiliation(s)
- María Asunción Campanero-Rhodes
- Department of Biological Physical Chemistry, Instituto de Química Física Blas Cabrera, Consejo Superior de Investigaciones Científicas, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Sara Martí
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
- Microbiology Department, Hospital Universitari Bellvitge, University of Barcelona-Fundación Instituto de Investigación Biomédica de Bellvitge, L’Hospitalet de Llobregat, Spain
| | - Noelia Hernández-Ortiz
- Department of Biological Physical Chemistry, Instituto de Química Física Blas Cabrera, Consejo Superior de Investigaciones Científicas, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
| | - Meritxell Cubero
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
- Microbiology Department, Hospital Universitari Bellvitge, University of Barcelona-Fundación Instituto de Investigación Biomédica de Bellvitge, L’Hospitalet de Llobregat, Spain
| | - June Ereño-Orbea
- CIC bioGUNE - Center for Cooperative Research in Biosciences, Basque Research & Technology Alliance (BRTA), Bizkaia Technology Park, Derio, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Ana Ardá
- CIC bioGUNE - Center for Cooperative Research in Biosciences, Basque Research & Technology Alliance (BRTA), Bizkaia Technology Park, Derio, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Jesús Jiménez-Barbero
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
- CIC bioGUNE - Center for Cooperative Research in Biosciences, Basque Research & Technology Alliance (BRTA), Bizkaia Technology Park, Derio, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
- Department of Organic Chemistry, II Faculty of Science and Technology University of the Basque Country, EHU/UPV, Leioa, Spain
| | - Carmen Ardanuy
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
- Microbiology Department, Hospital Universitari Bellvitge, University of Barcelona-Fundación Instituto de Investigación Biomédica de Bellvitge, L’Hospitalet de Llobregat, Spain
- Department of Pathology and Experimental Therapeutics, University of Barcelona, Barcelona, Spain
| | - Dolores Solís
- Department of Biological Physical Chemistry, Instituto de Química Física Blas Cabrera, Consejo Superior de Investigaciones Científicas, Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, Spain
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4
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Russell SL, Penunuri G, Condon C. Diverse genetic conflicts mediated by molecular mimicry and computational approaches to detect them. Semin Cell Dev Biol 2024; 165:1-12. [PMID: 39079455 DOI: 10.1016/j.semcdb.2024.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 07/03/2024] [Accepted: 07/14/2024] [Indexed: 09/07/2024]
Abstract
In genetic conflicts between intergenomic and selfish elements, driver and killer elements achieve biased survival, replication, or transmission over sensitive and targeted elements through a wide range of molecular mechanisms, including mimicry. Driving mechanisms manifest at all organismal levels, from the biased propagation of individual genes, as demonstrated by transposable elements, to the biased transmission of genomes, as illustrated by viruses, to the biased transmission of cell lineages, as in cancer. Targeted genomes are vulnerable to molecular mimicry through the conserved motifs they use for their own signaling and regulation. Mimicking these motifs enables an intergenomic or selfish element to control core target processes, and can occur at the sequence, structure, or functional level. Molecular mimicry was first appreciated as an important phenomenon more than twenty years ago. Modern genomics technologies, databases, and machine learning approaches offer tremendous potential to study the distribution of molecular mimicry across genetic conflicts in nature. Here, we explore the theoretical expectations for molecular mimicry between conflicting genomes, the trends in molecular mimicry mechanisms across known genetic conflicts, and outline how new examples can be gleaned from population genomic datasets. We discuss how mimics involving short sequence-based motifs or gene duplications can evolve convergently from new mutations. Whereas, processes that involve divergent domains or fully-folded structures occur among genomes by horizontal gene transfer. These trends are largely based on a small number of organisms and should be reevaluated in a general, phylogenetically independent framework. Currently, publicly available databases can be mined for genotypes driving non-Mendelian inheritance patterns, epistatic interactions, and convergent protein structures. A subset of these conflicting elements may be molecular mimics. We propose approaches for detecting genetic conflict and molecular mimicry from these datasets.
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Affiliation(s)
- Shelbi L Russell
- Genomics Institute, University of California Santa Cruz, Santa Cruz, CA, United States; Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA, United States.
| | - Gabriel Penunuri
- Genomics Institute, University of California Santa Cruz, Santa Cruz, CA, United States; Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA, United States
| | - Christopher Condon
- Genomics Institute, University of California Santa Cruz, Santa Cruz, CA, United States; Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA, United States
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5
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Sminia TJ, Aalvink S, de Jong H, Tempelaars MH, Zuilhof H, Abee T, de Vos WM, Tytgat HLP, Wennekes T. Probing Peptidoglycan Synthesis in the Gut Commensal Akkermansia Muciniphila with Bioorthogonal Chemical Reporters. Chembiochem 2024:e202400037. [PMID: 38688858 DOI: 10.1002/cbic.202400037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/29/2024] [Accepted: 04/30/2024] [Indexed: 05/02/2024]
Abstract
Our gut microbiota directly influences human physiology in health and disease. The myriad of surface glycoconjugates in both the bacterial cell envelope and our gut cells dominate the microbiota-host interface and play a critical role in host response and microbiota homeostasis. Among these, peptidoglycan is the basic glycan polymer offering the cell rigidity and a basis on which many other glycoconjugates are anchored. To directly study peptidoglycan in gut commensals and obtain the molecular insight required to understand their functional activities we need effective techniques like chemical probes to label peptidoglycan in live bacteria. Here we report a chemically guided approach to study peptidoglycan in a key mucin-degrading gut microbiota member of the Verrucomicrobia phylum, Akkermansia muciniphila. Two novel non-toxic tetrazine click-compatible peptidoglycan probes with either a cyclopropene or isonitrile handle allowed for the detection and imaging of peptidoglycan synthesis in this intestinal species.
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Affiliation(s)
- Tjerk J Sminia
- Laboratory of Organic Chemistry, Wageningen University and Research, Wageningen, The, Netherlands
| | - Steven Aalvink
- Laboratory of Microbiology, Wageningen University and Research, Wageningen, The, Netherlands
| | - Hanna de Jong
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The, Netherlands
| | - Marcel H Tempelaars
- Laboratory of Food Microbiology, Wageningen University and Research, Wageningen, The, Netherlands
| | - Han Zuilhof
- Laboratory of Organic Chemistry, Wageningen University and Research, Wageningen, The, Netherlands
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, P.R. China
| | - Tjakko Abee
- Laboratory of Food Microbiology, Wageningen University and Research, Wageningen, The, Netherlands
| | - Willem M de Vos
- Laboratory of Microbiology, Wageningen University and Research, Wageningen, The, Netherlands
- Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Hanne L P Tytgat
- Laboratory of Microbiology, Wageningen University and Research, Wageningen, The, Netherlands
- Current address: Nestlé Institute of Health Sciences, Nestlé Research, Lausanne, Switzerland
| | - Tom Wennekes
- Laboratory of Organic Chemistry, Wageningen University and Research, Wageningen, The, Netherlands
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomolecular Research, Utrecht University, Utrecht, The, Netherlands
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6
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Widmalm G. Glycan Shape, Motions, and Interactions Explored by NMR Spectroscopy. JACS AU 2024; 4:20-39. [PMID: 38274261 PMCID: PMC10807006 DOI: 10.1021/jacsau.3c00639] [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: 10/20/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 01/27/2024]
Abstract
Glycans in the form of oligosaccharides, polysaccharides, and glycoconjugates are ubiquitous in nature, and their structures range from linear assemblies to highly branched and decorated constructs. Solution state NMR spectroscopy facilitates elucidation of preferred conformations and shapes of the saccharides, motions, and dynamic aspects related to processes over time as well as the study of transient interactions with proteins. Identification of intermolecular networks at the atomic level of detail in recognition events by carbohydrate-binding proteins known as lectins, unraveling interactions with antibodies, and revealing substrate scope and action of glycosyl transferases employed for synthesis of oligo- and polysaccharides may efficiently be analyzed by NMR spectroscopy. By utilizing NMR active nuclei present in glycans and derivatives thereof, including isotopically enriched compounds, highly detailed information can be obtained by the experiments. Subsequent analysis may be aided by quantum chemical calculations of NMR parameters, machine learning-based methodologies and artificial intelligence. Interpretation of the results from NMR experiments can be complemented by extensive molecular dynamics simulations to obtain three-dimensional dynamic models, thereby clarifying molecular recognition processes involving the glycans.
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Affiliation(s)
- Göran Widmalm
- Department of Organic Chemistry,
Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden
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7
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Szczykutowicz J. Ligand Recognition by the Macrophage Galactose-Type C-Type Lectin: Self or Non-Self?-A Way to Trick the Host's Immune System. Int J Mol Sci 2023; 24:17078. [PMID: 38069400 PMCID: PMC10707269 DOI: 10.3390/ijms242317078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/24/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
The cells and numerous macromolecules of living organisms carry an array of simple and complex carbohydrates on their surface, which may be recognized by many types of proteins, including lectins. Human macrophage galactose-type lectin (MGL, also known as hMGL/CLEC10A/CD301) is a C-type lectin receptor expressed on professional antigen-presenting cells (APCs) specific to glycans containing terminal GalNAc residue, such as Tn antigen or LacdiNAc but also sialylated Tn antigens. Macrophage galactose-type lectin (MGL) exhibits immunosuppressive properties, thus facilitating the maintenance of immune homeostasis. Hence, MGL is exploited by tumors and some pathogens to trick the host immune system and induce an immunosuppressive environment to escape immune control. The aims of this article are to discuss the immunological outcomes of human MGL ligand recognition, provide insights into the molecular aspects of these interactions, and review the MGL ligands discovered so far. Lastly, based on the human fetoembryonic defense system (Hu-FEDS) hypothesis, this paper raises the question as to whether MGL-mediated interactions may be relevant in the development of maternal tolerance toward male gametes and the fetus.
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Affiliation(s)
- Justyna Szczykutowicz
- Department of Biochemistry and Immunochemistry, Division of Chemistry and Immunochemistry, Wroclaw Medical University, Sklodowskiej-Curie 48/50, 50-369 Wroclaw, Poland
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8
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Vos GM, Hooijschuur KC, Li Z, Fjeldsted J, Klein C, de Vries RP, Toraño JS, Boons GJ. Sialic acid O-acetylation patterns and glycosidic linkage type determination by ion mobility-mass spectrometry. Nat Commun 2023; 14:6795. [PMID: 37880209 PMCID: PMC10600165 DOI: 10.1038/s41467-023-42575-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 10/16/2023] [Indexed: 10/27/2023] Open
Abstract
O-acetylation is a common modification of sialic acids that has been implicated in a multitude of biological and disease processes. A lack of analytical methods that can determine exact structures of sialic acid variants is a hurdle to determine roles of distinct O-acetylated sialosides. Here, we describe a drift tube ion mobility-mass spectrometry approach that can elucidate exact O-acetylation patterns as well as glycosidic linkage types of sialosides isolated from complex biological samples. It is based on the use of a library of synthetic O-acetylated sialosides to establish intrinsic collision cross section (CCS) values of diagnostic fragment ions. The CCS values were used to characterize O-acetylated sialosides from mucins and N-linked glycans from biologicals as well as equine tracheal and nasal tissues. It uncovered contrasting sialic acid linkage types of acetylated and non-acetylated sialic acids and provided a rationale for sialic acid binding preferences of equine H7 influenza A viruses.
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Affiliation(s)
- Gaёl M Vos
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Kevin C Hooijschuur
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Zeshi Li
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | | | | | - Robert P de Vries
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Javier Sastre Toraño
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands.
| | - Geert-Jan Boons
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands.
- Bijvoet Center for Biomolecular Research, Utrecht University, 3584 CG, Utrecht, The Netherlands.
- Complex Carbohydrate Research Center and Department of Chemistry, University of Georgia, 315 Riverbend Road, Athens, GA, 30602, USA.
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9
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Luo S, Liu Y, Hao T, Ma W, Luo Y, Wang S, Xu Z, Hu C, Wen L, Li T. Chemoenzymatic Total Synthesis of Haemophilus ducreyi Lipooligosaccharide Core Octasaccharides Containing Natural and Unnatural Sialic Acids. Org Lett 2023; 25:2312-2317. [PMID: 36972419 DOI: 10.1021/acs.orglett.3c00657] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
The first total synthesis of Haemophilus ducreyi lipooligosaccharide core octasaccharides containing natural and unnatural sialic acids has been achieved by an efficient chemoenzymatic approach. A highly convergent [3 + 3] coupling strategy was developed to chemically assemble a unique hexasaccharide bearing multiple rare higher-carbon sugars d-glycero-d-manno-heptose (d,d-Hep), l-glycero-d-manno-heptose (l,d-Hep), and 3-deoxy-α-d-manno-oct-2-ulosonic acid (Kdo). Key features include sequential one-pot glycosylations for oligosaccharide assembly and the construction of the challenging α-(1 → 5)-linked Hep-Kdo glycosidic bond by gold-catalyzed glycosylation with a glycosyl ortho-alkynylbenzoate donor. Furthermore, the sequential enzyme-catalyzed regio- and stereoselective introduction of a galactose residue using β-1,4-galactosyltransferase and different sialic acids using a one-pot multienzyme sialylation system was efficiently accomplished to provide the target octasaccharides.
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Affiliation(s)
- Shiwei Luo
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Yating Liu
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Tianhui Hao
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjing Ma
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yawen Luo
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Shasha Wang
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Zhuojia Xu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Chaoyu Hu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Liuqing Wen
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Tiehai Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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10
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Bozzola T, Johnsson RE, Nilsson UJ, Ellervik U. Sialic Acid 4-N-Piperazine and Piperidine Derivatives Bind with High Affinity to the P. mirabilis Sialic Acid Sodium Solute Symporter. ChemMedChem 2022; 17:e202200351. [PMID: 36121381 PMCID: PMC10092485 DOI: 10.1002/cmdc.202200351] [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: 06/30/2022] [Revised: 09/16/2022] [Indexed: 01/14/2023]
Abstract
In search for novel antibacterial compounds, bacterial sialic acid uptake inhibition represents a promising strategy. Sialic acid plays a critical role for growth and colonisation of several pathogenic bacteria, and its uptake inhibition in bacteria was recently demonstrated to be a viable strategy by targeting the SiaT sodium solute symporters from Proteus mirabilis and Staphylococcus aureus. Here we report the design, synthesis and evaluation of potential sialic acid uptake inhibitors bearing 4-N-piperidine and piperazine moieties. The 4-N-derivatives were obtained via 4-N-functionalization with piperidine and piperazine nucleophiles in an efficient direct substitution of the 4-O-acetate of Neu5Ac. Evaluation for binding to bacterial transport proteins with nanoDSF and ITC revealed compounds possessing nanomolar affinity for the P. mirabilis SiaT symporter. Computational analyses indicate the engagement of a previously untargeted portion of the binding site.
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Affiliation(s)
- Tiago Bozzola
- Department of Chemistry, Lund University, P.O. Box 124, 221 00, Lund, Sweden
| | | | - Ulf J Nilsson
- Department of Chemistry, Lund University, P.O. Box 124, 221 00, Lund, Sweden
| | - Ulf Ellervik
- Department of Chemistry, Lund University, P.O. Box 124, 221 00, Lund, Sweden
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11
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Raev SA, Omwando AM, Guo Y, Raque MS, Amimo JO, Saif LJ, Vlasova AN. Glycan-mediated interactions between bacteria, rotavirus and the host cells provide an additional mechanism of antiviral defence. Benef Microbes 2022; 13:383-396. [PMID: 36239669 DOI: 10.3920/bm2022.0026] [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] [Indexed: 11/19/2022]
Abstract
Limited efficacy of rotavirus (RV) vaccines in children in developing countries and in animals remains a significant problem necessitating further search for additional approaches to control RV-associated gastroenteritis. During cell attachment and entry events, RV interacts with cell surface O-glycans including histo-blood group antigens (HBGAs). Besides modulation of the protective immunity against RV, several commensal and probiotic bacteria were shown to express HBGA-like substances suggesting that they may affect RV attachment and entry into the host cells. Moreover, some beneficial bacteria have been shown to possess the ability to bind host HBGAs via sugar specific proteins called lectins. However, limited research has been done to evaluate the effects of HBGA-expressing and/or HBGA-binding bacteria on RV infection. The aim of this study was to investigate the ability of selected commensal and probiotic bacteria to bind different RV strains via HBGAs and to block RV infection of IPEC-J2 cells. Our data indicated that Gram-negative probiotic Escherichia coli Nissle 1917 (E. coli Nissle 1917) and commensal Gram-positive (Streptococcus bovis and Bifidobacterium adolescentis) and Gram-negative (Bacteroides thetaiotaomicron, Clostridium clostridioforme and Escherichia coli G58 (E. coli G58) bacteria of swine origin expressed HBGAs which correlated with their ability to bind group A and C RVs. Additionally, Gram-positive E. coli 1917 and E. coli G58 demonstrated the ability to block RV attachment onto IPEC-J2 cells. Taken together, our results support the hypothesis that physical interactions between RVs and HBGA-expressing beneficial bacteria may limit RV replication.
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Affiliation(s)
- S A Raev
- Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH 44691, USA
| | - A M Omwando
- Department of Public Health, Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Nairobi, P.O. Box 29053, 00625 Nairobi, Kenya
| | - Y Guo
- Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH 44691, USA
| | - M S Raque
- Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH 44691, USA
| | - J O Amimo
- Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH 44691, USA
- Department of Animal Production, Faculty of Veterinary Medicine, University of Nairobi, P.O. Box 29053, 00625 Nairobi, Kenya
| | - L J Saif
- Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH 44691, USA
| | - A N Vlasova
- Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural and Environmental Sciences, The Ohio State University, Wooster, OH 44691, USA
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de Jong H, Moure MJ, Hartman JEM, Bosman GP, Ong JY, Bardoel BW, Boons G, Wösten MMSM, Wennekes T. Selective Exoenzymatic Labeling of Lipooligosaccharides of Neisseria gonorrhoeae with α2,6-Sialoside Analogues. Chembiochem 2022; 23:e202200340. [PMID: 35877976 PMCID: PMC9804176 DOI: 10.1002/cbic.202200340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/23/2022] [Indexed: 01/05/2023]
Abstract
The interactions between bacteria and their host often rely on recognition processes that involve host or bacterial glycans. Glycoengineering techniques make it possible to modify and study the glycans on the host's eukaryotic cells, but only a few are available for the study of bacterial glycans. Here, we have adapted selective exoenzymatic labeling (SEEL), a chemical reporter strategy, to label the lipooligosaccharides of the bacterial pathogen Neisseria gonorrhoeae, using the recombinant glycosyltransferase ST6Gal1, and three synthetic CMP-sialic acid derivatives. We show that SEEL treatment does not affect cell viability and can introduce an α2,6-linked sialic acid with a reporter group on the lipooligosaccharides by Western blot, flow cytometry and fluorescent microscopy. This new bacterial glycoengineering technique allows for the precise modification, here with α2,6-sialoside derivatives, and direct detection of specific surface glycans on live bacteria, which will aid in further unravelling the precise biological functions of bacterial glycans.
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Affiliation(s)
- Hanna de Jong
- Department of Chemical Biology and Drug Discovery Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
- Department of Biomolecular Health SciencesUtrecht UniversityYalelaan 13584 CLUtrechtThe Netherlands
| | - Maria J. Moure
- Complex Carbohydrate Research Center and Department of ChemistryUniversity of Georgia315 Riverbend RoadAthensGA 30602USA
- Chemical Glycobiology Lab, CIC bioGUNEBasque Research & Technology Alliance (BRTA)Bizkaia Technology Park, Building 80048160DerioSpain
| | - Jet E. M. Hartman
- Department of Chemical Biology and Drug Discovery Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Gerlof P. Bosman
- Department of Chemical Biology and Drug Discovery Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Jun Yang Ong
- Department of Chemical Biology and Drug Discovery Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
| | - Bart W. Bardoel
- Department of Medical MicrobiologyUniversity Medical Center UtrechtHeidelberglaan 100 HP G04.6143584 CXUtrechtThe Netherlands
| | - Geert‐Jan Boons
- Department of Chemical Biology and Drug Discovery Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
- Complex Carbohydrate Research Center and Department of ChemistryUniversity of Georgia315 Riverbend RoadAthensGA 30602USA
| | - Marc M. S. M. Wösten
- Department of Biomolecular Health SciencesUtrecht UniversityYalelaan 13584 CLUtrechtThe Netherlands
| | - Tom Wennekes
- Department of Chemical Biology and Drug Discovery Utrecht Institute for Pharmaceutical Sciences and Bijvoet Center for Biomedical ResearchUtrecht UniversityUniversiteitsweg 993584 CGUtrechtThe Netherlands
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Fischer S, Stegmann F, Gnanapragassam VS, Lepenies B. From structure to function – Ligand recognition by myeloid C-type lectin receptors. Comput Struct Biotechnol J 2022; 20:5790-5812. [DOI: 10.1016/j.csbj.2022.10.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 10/14/2022] [Accepted: 10/14/2022] [Indexed: 11/29/2022] Open
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