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Haselhorst T. Studying the interaction of glycans with intact virions and virus-like particles by ligand-observed NMR spectroscopy. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2024; 62:337-344. [PMID: 37776196 DOI: 10.1002/mrc.5399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/12/2023] [Accepted: 09/13/2023] [Indexed: 10/02/2023]
Abstract
Virus-glycan interactions play a crucial role in the infection process of many viruses. NMR spectroscopy has emerged as a powerful tool for studying these interactions at the molecular level. In this article, we review several published papers and reports that have highlighted the application of NMR spectroscopy in understanding the complex questions of how viruses engage with and bind to receptor glycans. The use of saturation transfer difference (STD) NMR spectroscopy has demonstrated itself as highly advantageous in investigating the interaction between glycans and intact virions or virus-like particles (VLPs). The broad NMR signal linewidth of virions and VLPs allows efficient saturation without affecting the glycan signals. The advantage of this approach is that the viral capsid environment in protein organization and function is not ignored and therefore provides a more biologically relevant model for exploring the interactions between the virus and the host cell glycans. We will review some examples of using NMR spectroscopy to study influenza cell tropism, rotaviruses, and noroviruses.
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Affiliation(s)
- Thomas Haselhorst
- Institute for Glycomics & School of Environment and Science, Griffith University, Southport, Queensland, Australia
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2
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Kuhaudomlarp S, Imberty A. Involvement of sialoglycans in SARS-COV-2 infection: Opportunities and challenges for glyco-based inhibitors. IUBMB Life 2022; 74:1253-1263. [PMID: 36349722 PMCID: PMC9877878 DOI: 10.1002/iub.2692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 11/02/2022] [Indexed: 11/11/2022]
Abstract
Viral infections have been the causes of global pandemics, including the ongoing coronavirus disease 2019, which prompted the investigation into the infection mechanisms to find treatment and aid the vaccine design. Betacoronaviruses use spike glycoprotein on their surface to bind to host receptors, aiding their host attachment and cell fusion. Protein-glycan interaction has been implicated in the viral entry mechanism of many viruses and has recently been shown in SARS-CoV-2. Here, we reviewed the current knowledge on protein-glycan interactions that facilitate SARS-CoV-2 host entry, with special interest in sialoglycans present on both the virions and host cell surfaces. We also analyze how such information provides opportunities and challenges in glyco-based inhibitors.
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Affiliation(s)
- Sakonwan Kuhaudomlarp
- Department of Biochemistry, Faculty of ScienceMahidol UniversityBangkokThailand,Center for Excellence in Protein and Enzyme Technology, Faculty of ScienceMahidol UniversityBangkokThailand
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3
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Theillet FX, Luchinat E. In-cell NMR: Why and how? PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2022; 132-133:1-112. [PMID: 36496255 DOI: 10.1016/j.pnmrs.2022.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 04/19/2022] [Accepted: 04/27/2022] [Indexed: 06/17/2023]
Abstract
NMR spectroscopy has been applied to cells and tissues analysis since its beginnings, as early as 1950. We have attempted to gather here in a didactic fashion the broad diversity of data and ideas that emerged from NMR investigations on living cells. Covering a large proportion of the periodic table, NMR spectroscopy permits scrutiny of a great variety of atomic nuclei in all living organisms non-invasively. It has thus provided quantitative information on cellular atoms and their chemical environment, dynamics, or interactions. We will show that NMR studies have generated valuable knowledge on a vast array of cellular molecules and events, from water, salts, metabolites, cell walls, proteins, nucleic acids, drugs and drug targets, to pH, redox equilibria and chemical reactions. The characterization of such a multitude of objects at the atomic scale has thus shaped our mental representation of cellular life at multiple levels, together with major techniques like mass-spectrometry or microscopies. NMR studies on cells has accompanied the developments of MRI and metabolomics, and various subfields have flourished, coined with appealing names: fluxomics, foodomics, MRI and MRS (i.e. imaging and localized spectroscopy of living tissues, respectively), whole-cell NMR, on-cell ligand-based NMR, systems NMR, cellular structural biology, in-cell NMR… All these have not grown separately, but rather by reinforcing each other like a braided trunk. Hence, we try here to provide an analytical account of a large ensemble of intricately linked approaches, whose integration has been and will be key to their success. We present extensive overviews, firstly on the various types of information provided by NMR in a cellular environment (the "why", oriented towards a broad readership), and secondly on the employed NMR techniques and setups (the "how", where we discuss the past, current and future methods). Each subsection is constructed as a historical anthology, showing how the intrinsic properties of NMR spectroscopy and its developments structured the accessible knowledge on cellular phenomena. Using this systematic approach, we sought i) to make this review accessible to the broadest audience and ii) to highlight some early techniques that may find renewed interest. Finally, we present a brief discussion on what may be potential and desirable developments in the context of integrative studies in biology.
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Affiliation(s)
- Francois-Xavier Theillet
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette, France.
| | - Enrico Luchinat
- Dipartimento di Scienze e Tecnologie Agro-Alimentari, Alma Mater Studiorum - Università di Bologna, Piazza Goidanich 60, 47521 Cesena, Italy; CERM - Magnetic Resonance Center, and Neurofarba Department, Università degli Studi di Firenze, 50019 Sesto Fiorentino, Italy
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4
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Soares CO, Grosso AS, Ereño-Orbea J, Coelho H, Marcelo F. Molecular Recognition Insights of Sialic Acid Glycans by Distinct Receptors Unveiled by NMR and Molecular Modeling. Front Mol Biosci 2021; 8:727847. [PMID: 34869580 PMCID: PMC8634706 DOI: 10.3389/fmolb.2021.727847] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 10/01/2021] [Indexed: 11/13/2022] Open
Abstract
All cells are decorated with a highly dense and complex structure of glycan chains, which are mostly attached to proteins and lipids. In this context, sialic acids are a family of nine-carbon acidic monosaccharides typically found at the terminal position of glycan chains, modulating several physiological and pathological processes. Sialic acids have many structural and modulatory roles due to their negative charge and hydrophilicity. In addition, the recognition of sialic acid glycans by mammalian cell lectins, such as siglecs, has been described as an important immunological checkpoint. Furthermore, sialic acid glycans also play a pivotal role in host-pathogen interactions. Various pathogen receptors exposed on the surface of viruses and bacteria are responsible for the binding to sialic acid sugars located on the surface of host cells, becoming a critical point of contact in the infection process. Understanding the molecular mechanism of sialic acid glycans recognition by sialic acid-binding proteins, present on the surface of pathogens or human cells, is essential to realize the biological mechanism of these events and paves the way for the rational development of strategies to modulate sialic acid-protein interactions in diseases. In this perspective, nuclear magnetic resonance (NMR) spectroscopy, assisted with molecular modeling protocols, is a versatile and powerful technique to investigate the structural and dynamic aspects of glycoconjugates and their interactions in solution at the atomic level. NMR provides the corresponding ligand and protein epitopes, essential for designing and developing potential glycan-based therapies. In this review, we critically discuss the current state of knowledge about the structural features behind the molecular recognition of sialic acid glycans by different receptors, naturally present on human cells or pathogens, disclosed by NMR spectroscopy and molecular modeling protocols.
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Affiliation(s)
- Cátia Oliveira Soares
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.,Department of Chemistry, UCIBIO-Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Ana Sofia Grosso
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.,Department of Chemistry, UCIBIO-Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - June Ereño-Orbea
- CIC bioGUNE, Basque Research and Technology Alliance, Bizkaia Technology Park, Bilbao, Spain.,Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Helena Coelho
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.,Department of Chemistry, UCIBIO-Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
| | - Filipa Marcelo
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal.,Department of Chemistry, UCIBIO-Applied Molecular Biosciences Unit, NOVA School of Science and Technology, NOVA University Lisbon, Caparica, Portugal
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5
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Kim CH. Viral Protein Interaction with Host Cells GSLs. GLYCOSPHINGOLIPIDS SIGNALING 2020:53-92. [DOI: 10.1007/978-981-15-5807-8_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
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6
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Earley DF, Bailly B, Maggioni A, Kundur AR, Thomson RJ, Chang CW, von Itzstein M. Efficient Blocking of Enterovirus 71 Infection by Heparan Sulfate Analogues Acting as Decoy Receptors. ACS Infect Dis 2019; 5:1708-1717. [PMID: 31307190 DOI: 10.1021/acsinfecdis.9b00070] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Enterovirus 71 (EV71) is a major etiological agent of hand, foot, and mouth disease, for which there is no antiviral therapy. We have developed densely sulfated disaccharide heparan sulfate (HS) analogues that are potent small molecule inhibitors of EV71 infection, binding to the viral capsid and acting as decoy receptors to block early events of virus replication. The simplified structures, more potent than defined HS disaccharides and with no significant anticoagulant activity, offer promise as anti-EV71 agents.
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Affiliation(s)
- Daniel F. Earley
- Institute for Glycomics, Griffith University, Gold Coast, Queensland 4222, Australia
| | - Benjamin Bailly
- Institute for Glycomics, Griffith University, Gold Coast, Queensland 4222, Australia
| | - Andrea Maggioni
- Institute for Glycomics, Griffith University, Gold Coast, Queensland 4222, Australia
| | - Avinash R. Kundur
- School of Medical Science, Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland 4222, Australia
| | - Robin J. Thomson
- Institute for Glycomics, Griffith University, Gold Coast, Queensland 4222, Australia
| | - Chih-Wei Chang
- Institute for Glycomics, Griffith University, Gold Coast, Queensland 4222, Australia
| | - Mark von Itzstein
- Institute for Glycomics, Griffith University, Gold Coast, Queensland 4222, Australia
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Abstract
Many important interactions between bacterial pathogens and their hosts are highly specific binding events that involve host or pathogen carbohydrate structures (glycans). Glycan interactions can mediate adhesion, invasion and immune evasion and can act as receptors for toxins. Several bacterial pathogens can also enzymatically alter host glycans to reveal binding targets, degrade the host cell glycans or alter the function of host glycoproteins. In recent years, high-throughput screening technologies, such as lectin, glycan and mucin microarrays, have transformed the field by identifying new bacterial-host glycointeractions, which are crucial for colonization, persistence and disease. In this Review, we discuss interactions involving both host and bacterial glycans that have a role in bacterial pathogenesis. We also highlight recent technological advances that have illuminated the glycoscience of microbial pathogenesis.
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8
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Visualization of Calcium Ion Loss from Rotavirus during Cell Entry. J Virol 2018; 92:JVI.01327-18. [PMID: 30258012 PMCID: PMC6258952 DOI: 10.1128/jvi.01327-18] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 09/14/2018] [Indexed: 01/02/2023] Open
Abstract
Nonenveloped viruses penetrate into the cytosol of the cells that they infect by disrupting the membrane of an intracellular compartment. The molecular mechanisms of membrane disruption remain largely undefined. Functional reconstitution of infectious rotavirus particles (TLPs) from RNA-containing core particles (DLPs) and the outer layer proteins that deliver them into a cell makes these important pediatric pathogens particularly good models for studying nonenveloped virus entry. We report here how the use of a fluorescent Ca2+ sensor, covalently linked to one of the viral proteins, allows us to establish, using live-cell imaging, the timing of Ca2+ loss from an entering particle and other molecular events in the entry pathway. Specific Ca2+ binding stabilizes many other viruses of eukaryotes, and Ca2+ loss appears to be a trigger for steps in penetration or uncoating. The experimental design that we describe may be useful for studying entry of other viral pathogens. Bound calcium ions stabilize many nonenveloped virions. Loss of Ca2+ from these particles appears to be a regulated part of entry or uncoating. The outer layer of an infectious rotavirus triple-layered particle (TLP) comprises a membrane-interacting protein (VP4) anchored by a Ca2+-stabilized protein (VP7). Membrane-coupled conformational changes in VP4 (cleaved to VP8* and VP5*) and dissociation of VP4 and VP7 accompany penetration of the double-layered inner capsid particle (DLP) into the cytosol. Removal of Ca2+in vitro strips away both outer layer proteins; we and others have postulated that the loss of Ca2+ triggers molecular events in viral penetration. We have now investigated, with the aid of a fluorescent Ca2+ sensor, the timing of Ca2+ loss from entering virions with respect to the dissociation of VP4 and VP7. In live-cell imaging experiments, distinct fluorescent markers on the DLP and on VP7 report on outer layer dissociation and DLP release. The Ca2+ sensor, placed on VP5*, monitors the Ca2+ concentration within the membrane-bound vesicle enclosing the entering particle. Slow (1-min duration) loss of Ca2+ precedes the onset of VP7 dissociation by about 2 min and DLP release by about 7 min. Coupled with our previous results showing that VP7 loss follows tight binding to the cell surface by about 5 min, these data indicate that Ca2+ loss begins as soon as the particle has become fully engulfed within the uptake vesicle. We discuss the implications of these findings for the molecular mechanism of membrane disruption during viral entry. IMPORTANCE Nonenveloped viruses penetrate into the cytosol of the cells that they infect by disrupting the membrane of an intracellular compartment. The molecular mechanisms of membrane disruption remain largely undefined. Functional reconstitution of infectious rotavirus particles (TLPs) from RNA-containing core particles (DLPs) and the outer layer proteins that deliver them into a cell makes these important pediatric pathogens particularly good models for studying nonenveloped virus entry. We report here how the use of a fluorescent Ca2+ sensor, covalently linked to one of the viral proteins, allows us to establish, using live-cell imaging, the timing of Ca2+ loss from an entering particle and other molecular events in the entry pathway. Specific Ca2+ binding stabilizes many other viruses of eukaryotes, and Ca2+ loss appears to be a trigger for steps in penetration or uncoating. The experimental design that we describe may be useful for studying entry of other viral pathogens.
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9
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Abstract
Sialic acid-based glycoconjugates cover the surfaces of many different cell types, defining key properties of the cell surface such as overall charge or likely interaction partners. Because of this prominence, sialic acids play prominent roles in mediating attachment and entry to viruses belonging to many different families. In this review, we first describe how interactions between viruses and sialic acid-based glycan structures can be identified and characterized using a range of techniques. We then highlight interactions between sialic acids and virus capsid proteins in four different viruses, and discuss what these interactions have taught us about sialic acid engagement and opportunities to interfere with binding.
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Affiliation(s)
- Bärbel S Blaum
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Thilo Stehle
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany; Vanderbilt University School of Medicine, Nashville, TN, United States
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10
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Li Z, Feizi T. The neoglycolipid (NGL) technology-based microarrays and future prospects. FEBS Lett 2018; 592:3976-3991. [PMID: 30074246 DOI: 10.1002/1873-3468.13217] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 07/31/2018] [Accepted: 07/31/2018] [Indexed: 11/06/2022]
Abstract
The neoglycolipid (NGL) technology is the basis of a state-of-the-art oligosaccharide microarray system, which we offer for screening analyses to the broad scientific community. We review here the sequential development of the technology and its power in pinpointing and isolating naturally occurring ligands for glycan-binding proteins (GBPs) within glycan populations. We highlight our Designer Array approach and Beam Search Array approach for generating natural glycome arrays to identify novel ligands of biological relevance. These two microarray approaches have been applied for assignments of ligands or antigens on glucan polysaccharides for effector proteins of the immune system (Dectin-1, DC-SIGN and DC-SIGNR) and carbohydrate-binding modules (CBMs) on bacterial hydrolases. We also discuss here the more recent applications to elucidate the structure of a prostate cancer- associated antigen F77 and identify ligands for adhesins of two rotaviruses, P[10] and P[19], expressed on an epithelial mucin glycoprotein.
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Affiliation(s)
- Zhen Li
- Glycosciences Laboratory, Imperial College London, UK
| | - Ten Feizi
- Glycosciences Laboratory, Imperial College London, UK
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11
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Mishra R, Yu X, Kishor C, Holloway G, Lau K, von Itzstein M, Coulson BS, Blanchard H. Specificity and affinity of neuraminic acid exhibited by canine rotavirus strain K9 carbohydrate-binding domain (VP8*). J Mol Recognit 2018; 31:e2718. [PMID: 29687510 DOI: 10.1002/jmr.2718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/04/2018] [Accepted: 03/06/2018] [Indexed: 12/23/2022]
Abstract
The outer capsid spike protein VP4 of rotaviruses is a major determinant of infectivity and serotype specificity. Proteolytic cleavage of VP4 into 2 domains, VP8* and VP5*, enhances rotaviral infectivity. Interactions between the VP4 carbohydrate-binding domain (VP8*) and cell surface glycoconjugates facilitate initial virus-cell attachment and subsequent cell entry. Our saturation transfer difference nuclear magnetic resonance (STD NMR) and isothermal titration calorimetry (ITC) studies demonstrated that VP8*64-224 of canine rotavirus strain K9 interacts with N-acetylneuraminic and N-glycolylneuraminic acid derivatives, exhibiting comparable binding epitopes to VP8* from other neuraminidase-sensitive animal rotaviruses from pigs (CRW-8), cattle (bovine Nebraska calf diarrhoea virus, NCDV), and Rhesus monkeys (Simian rhesus rotavirus, RRV). Importantly, evidence was obtained for a preference by K9 rotavirus for the N-glycolyl- over the N-acetylneuraminic acid derivative. This indicates that a VP4 serotype 5A rotavirus (such as K9) can exhibit a neuraminic acid receptor preference that differs from that of a serotype 5B rotavirus (such as RRV) and the receptor preference of rotaviruses can vary within a particular VP4 genotype.
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Affiliation(s)
- Rahul Mishra
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Xing Yu
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Chandan Kishor
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Gavan Holloway
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, Victoria, Australia
| | - Kam Lau
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Mark von Itzstein
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Barbara S Coulson
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, The University of Melbourne, Melbourne, Victoria, Australia
| | - Helen Blanchard
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
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12
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Single-Particle Detection of Transcription following Rotavirus Entry. J Virol 2017; 91:JVI.00651-17. [PMID: 28701394 PMCID: PMC5571246 DOI: 10.1128/jvi.00651-17] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 06/29/2017] [Indexed: 12/25/2022] Open
Abstract
Infectious rotavirus particles are triple-layered, icosahedral assemblies. The outer layer proteins, VP4 (cleaved to VP8* and VP5*) and VP7, surround a transcriptionally competent, double-layer particle (DLP), which they deliver into the cytosol. During entry of rhesus rotavirus, VP8* interacts with cell surface gangliosides, allowing engulfment into a membrane vesicle by a clathrin-independent process. Escape into the cytosol and outer-layer shedding depend on interaction of a hydrophobic surface on VP5* with the membrane bilayer and on a large-scale conformational change. We report here experiments that detect the fate of released DLPs and their efficiency in initiating RNA synthesis. By replacing the outer layer with fluorescently tagged, recombinant proteins and also tagging the DLP, we distinguished particles that have lost their outer layer and entered the cytosol (uncoated) from those still within membrane vesicles. We used fluorescent in situ hybridization with probes for nascent transcripts to determine how soon after uncoating transcription began and what fraction of the uncoated particles were active in initiating RNA synthesis. We detected RNA synthesis by uncoated particles as early as 15 min after adding virus. The uncoating efficiency was 20 to 50%; of the uncoated particles, about 10 to 15% synthesized detectable RNA. In the format of our experiments, about 10% of the added particles attached to the cell surface, giving an overall ratio of added particles to RNA-synthesizing particles of between 250:1 and 500:1, in good agreement with the ratio of particles to focus-forming units determined by infectivity assays. Thus, RNA synthesis by even a single, uncoated particle can initiate infection in a cell.IMPORTANCE The pathways by which a virus enters a cell transform its packaged genome into an active one. Contemporary fluorescence microscopy can detect individual virus particles as they enter cells, allowing us to map their multistep entry pathways. Rotaviruses, like most viruses that lack membranes of their own, disrupt or perforate the intracellular, membrane-enclosed compartment into which they become engulfed following attachment to a cell surface, in order to gain access to the cell interior. The properties of rotavirus particles make it possible to determine molecular mechanisms for these entry steps. In the work described here, we have asked the following question: what fraction of the rotavirus particles that penetrate into the cell make new viral RNA? We find that of the cell-attached particles, between 20 and 50% ultimately penetrate, and of these, about 10% make RNA. RNA synthesis by even a single virus particle can initiate a productive infection.
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Madge PD, Maggioni A, Pascolutti M, Amin M, Waespy M, Bellette B, Thomson RJ, Kelm S, von Itzstein M, Haselhorst T. Structural characterisation of high affinity Siglec-2 (CD22) ligands in complex with whole Burkitt's lymphoma (BL) Daudi cells by NMR spectroscopy. Sci Rep 2016; 6:36012. [PMID: 27808110 PMCID: PMC5093622 DOI: 10.1038/srep36012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 10/10/2016] [Indexed: 12/13/2022] Open
Abstract
Siglec-2 undergoes constitutive endocytosis and is a drug target for autoimmune diseases and B cell-derived malignancies, including hairy cell leukaemia, marginal zone lymphoma, chronic lymphocytic leukaemia and non-Hodgkin's lymphoma (NHL). An alternative to current antibody-based therapies is the use of liposomal nanoparticles loaded with cytotoxic drugs and decorated with Siglec-2 ligands. We have recently designed the first Siglec-2 ligands (9-biphenylcarboxamido-4-meta-nitrophenyl-carboxamido-Neu5Acα2Me, 9-BPC-4-mNPC-Neu5Acα2Me) with simultaneous modifications at C-4 and C-9 position. In the current study we have used Saturation Transfer Difference (STD) NMR spectroscopy to monitor the binding of 9-BPC-4-mNPC-Neu5Acα2Me to Siglec-2 present on intact Burkitt's lymphoma Daudi cells. Pre-treatment of cells with periodate resulted in significantly higher STD NMR signal intensities for 9-BPC-4-mNPC-Neu5Acα2Me as the cells were more susceptible to ligand binding because cis-binding on the cell surface was removed. Quantification of STD NMR effects led to a cell-derived binding epitope of 9-BPC-4-mNPC-Neu5Acα2Me that facilitated the design and synthesis of C-2, C-3, C-4 and C-9 tetra-substituted Siglec-2 ligands showing an 88-fold higher affinity compared to 9-BPC-Neu5Acα2Me. This is the first time a NMR-based binding study of high affinity Siglec-2 (CD22) ligands in complex with whole Burkitt's lymphoma Daudi cells has been described that might open new avenues in developing tailored therapeutics and personalised medicine.
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Affiliation(s)
- Paul D Madge
- Institute for Glycomics, Gold Coast Campus, Griffith University, Queensland, 4222, Australia
| | - Andrea Maggioni
- Institute for Glycomics, Gold Coast Campus, Griffith University, Queensland, 4222, Australia
| | - Mauro Pascolutti
- Institute for Glycomics, Gold Coast Campus, Griffith University, Queensland, 4222, Australia
| | - Moein Amin
- Institute for Glycomics, Gold Coast Campus, Griffith University, Queensland, 4222, Australia
| | - Mario Waespy
- Centre for Biomolecular Interactions Bremen, Department of Biology and Chemistry, University of Bremen, 28334 Bremen, Germany
| | - Bernadette Bellette
- Institute for Glycomics, Gold Coast Campus, Griffith University, Queensland, 4222, Australia
| | - Robin J Thomson
- Institute for Glycomics, Gold Coast Campus, Griffith University, Queensland, 4222, Australia
| | - Sørge Kelm
- Institute for Glycomics, Gold Coast Campus, Griffith University, Queensland, 4222, Australia.,Centre for Biomolecular Interactions Bremen, Department of Biology and Chemistry, University of Bremen, 28334 Bremen, Germany
| | - Mark von Itzstein
- Institute for Glycomics, Gold Coast Campus, Griffith University, Queensland, 4222, Australia
| | - Thomas Haselhorst
- Institute for Glycomics, Gold Coast Campus, Griffith University, Queensland, 4222, Australia
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14
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Mallagaray A, Rademacher C, Parra F, Hansman G, Peters T. Saturation transfer difference nuclear magnetic resonance titrations reveal complex multistep-binding of l-fucose to norovirus particles. Glycobiology 2016; 27:80-86. [PMID: 27496762 DOI: 10.1093/glycob/cww070] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 06/24/2016] [Accepted: 06/25/2016] [Indexed: 01/20/2023] Open
Abstract
Recently, combined nuclear magnetic resonance (NMR), native mass spectrometry (MS) and X-ray crystallographic studies have demonstrated that binding of histo-blood group antigens (HBGAs) to norovirus capsid protein (P-dimers) is a cooperative process involving four binding pockets. Here, we show that binding to norovirus virus-like particles (VLPs) is even more complex. We performed saturation transfer difference (STD) NMR titration experiments with two representative genotypes of norovirus VLPs using l-fucose as a minimal HBGA. Compared to titrations with P-dimers, the corresponding binding isotherms reflect at least six distinct binding events.
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Affiliation(s)
- Alvaro Mallagaray
- Center of Structural and Cell Biology in Medicine, Institute of Chemistry, University of Luebeck, Ratzeburger Allee 160, 23562 Luebeck, Germany
| | - Christoph Rademacher
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Francisco Parra
- Universidad de Oviedo, Instituto Universitario de Biotecnología de Asturias, 33006 Oviedo Spain
| | - Grant Hansman
- Schaller Research Group at the University of Heidelberg and the DKFZ, 69120 Heidelberg, Germany.,Department of Infectious Diseases and Virology, University of Heidelberg, 69120 Heidelberg, Germany
| | - Thomas Peters
- Center of Structural and Cell Biology in Medicine, Institute of Chemistry, University of Luebeck, Ratzeburger Allee 160, 23562 Luebeck, Germany
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Coulson BS. Expanding diversity of glycan receptor usage by rotaviruses. Curr Opin Virol 2015; 15:90-6. [PMID: 26363995 DOI: 10.1016/j.coviro.2015.08.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 08/11/2015] [Accepted: 08/26/2015] [Indexed: 11/16/2022]
Abstract
Rotaviruses are major etiologic agents of severe gastroenteritis in human and animals, infecting the mature intestinal epithelium. Their attachment to host cell glycans is mediated through the virion spike protein. This is considered to be crucial for successful host cell invasion by rotaviruses. Recent studies have greatly expanded our understanding of the diversity of glycans commonly recognized by rotaviruses, to include the ganglioside GM1a and histo-blood group antigens. Here, these new findings are integrated with advances in knowledge of spike protein structure, rotavirus entry mechanisms and innate intestinal immunity to provide an overview of the variety of rotavirus glycan receptors and their roles in cell penetration, host tropism and pathogenesis.
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Affiliation(s)
- Barbara S Coulson
- Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, 792 Elizabeth St., Melbourne, Victoria 3000, Australia.
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16
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Ardá A, Canales A, Cañada FJ, Jiménez-Barbero J. Carbohydrate–Protein Interactions: A 3D View by NMR. CARBOHYDRATES IN DRUG DESIGN AND DISCOVERY 2015. [DOI: 10.1039/9781849739993-00001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
NMR spectroscopy is a key tool for carbohydrate research. In studies with complex oligosaccharides there are limits to the amount of relevant structural information provided by these observables due to problems of signal overlapping, strong coupling and/or the scarcity of the key NOE information. Thus, there is an increasing need for additional parameters with structural information, such as residual dipolar couplings (RDCs), paramagnetic relaxation enhancements (PREs) or pseudo contact shifts (PCSs). Carbohydrates are rather flexible molecules. Therefore, NMR observables do not always correlate with a single conformer but with an ensemble of low free-energy conformers that can be accessed by thermal fluctuations. Depending on the system under study, different NMR approaches can be followed to characterize protein–carbohydrate interactions: the standard methodologies can usually be classified as “ligand-based” or “receptor-based”. The selection of the proper methodology is usually determined by the size of the receptor, the dissociation constant of the complex (KD), the availability of the labelled protein (15N, 13C) and the access to soluble receptors at enough concentration for NMR measurements.
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Affiliation(s)
- Ana Ardá
- Chemical and Physical Biology, CIB-CSIC Ramiro de Maeztu 9 28040 Madrid Spain
| | - Angeles Canales
- Chemical and Physical Biology, CIB-CSIC Ramiro de Maeztu 9 28040 Madrid Spain
| | - F. Javier Cañada
- Chemical and Physical Biology, CIB-CSIC Ramiro de Maeztu 9 28040 Madrid Spain
| | - Jesús Jiménez-Barbero
- Chemical and Physical Biology, CIB-CSIC Ramiro de Maeztu 9 28040 Madrid Spain
- CIC bioGUNE, Parque Tecnológico de Bizkaia Edif. 801A-1 48160 Derio-Bizkaia Spain
- Ikerbasque, Basque Foundation for Science Bilbao Spain
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17
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Abstract
Receptors expressed on the host cell surface adhere viruses to target cells and serve as determinants of viral tropism. Several viruses bind cell surface glycans to facilitate entry, but the contribution of specific glycan moieties to viral disease is incompletely understood. Reovirus provides a tractable experimental model for studies of viral neuropathogenesis. In newborn mice, serotype 1 (T1) reovirus causes hydrocephalus, whereas serotype 3 (T3) reovirus causes encephalitis. T1 and T3 reoviruses engage distinct glycans, suggesting that glycan-binding capacity contributes to these differences in pathogenesis. Using structure-guided mutagenesis, we engineered a mutant T1 reovirus incapable of binding the T1 reovirus-specific glycan receptor, GM2. The mutant virus induced substantially less hydrocephalus than wild-type virus, an effect phenocopied by wild-type virus infection of GM2-deficient mice. In comparison to wild-type virus, yields of mutant virus were diminished in cultured ependymal cells, the cell type that lines the brain ventricles. These findings suggest that GM2 engagement targets reovirus to ependymal cells in mice and illuminate the function of glycan engagement in reovirus serotype-dependent disease. Receptor utilization strongly influences viral disease, often dictating host range and target cell selection. Different reovirus serotypes bind to different glycans, but a precise function for these molecules in pathogenesis is unknown. We used type 1 (T1) reovirus deficient in binding the GM2 glycan and mice lacking GM2 to pinpoint a role for glycan engagement in hydrocephalus caused by T1 reovirus. This work indicates that engagement of a specific glycan can lead to infection of specific cells in the host and consequent disease at that site. Since reovirus is being developed as a vaccine vector and oncolytic agent, understanding reovirus-glycan interactions may allow manipulation of reovirus glycan-binding properties for therapeutic applications.
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18
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Böhm R, Fleming FE, Maggioni A, Dang VT, Holloway G, Coulson BS, von Itzstein M, Haselhorst T. Revisiting the role of histo-blood group antigens in rotavirus host-cell invasion. Nat Commun 2015; 6:5907. [DOI: 10.1038/ncomms6907] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Accepted: 11/20/2014] [Indexed: 12/16/2022] Open
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19
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Ferrets exclusively synthesize Neu5Ac and express naturally humanized influenza A virus receptors. Nat Commun 2014; 5:5750. [PMID: 25517696 PMCID: PMC4351649 DOI: 10.1038/ncomms6750] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 11/04/2014] [Indexed: 02/04/2023] Open
Abstract
Mammals express the sialic acids N-acetylneuraminic acid (Neu5Ac) and N-glycolylneuraminic acid (Neu5Gc) on cell surfaces, where they act as receptors for pathogens, including influenza A virus (IAV). Neu5Gc is synthesized from Neu5Ac by the enzyme cytidine monophosphate-N-acetylneuraminic acid hydroxylase (CMAH). In humans, this enzyme is inactive and only Neu5Ac is produced. Ferrets are susceptible to human-adapted IAV strains and have been the dominant animal model for IAV studies. Here we show that ferrets, like humans, do not synthesize Neu5Gc. Genomic analysis reveals an ancient, nine-exon deletion in the ferret CMAH gene that is shared by the Pinnipedia and Musteloidia members of the Carnivora. Interactions between two human strains of IAV with the sialyllactose receptor (sialic acid—α2,6Gal) confirm that the type of terminal sialic acid contributes significantly to IAV receptor specificity. Our results indicate that exclusive expression of Neu5Ac contributes to the susceptibility of ferrets to human-adapted IAV strains. Ferrets constitute a useful model for influenza research because they are susceptible to human-adapted flu viruses. Here, the authors show that ferrets, like humans, lack a functional CMAH enzyme and synthesize a single type of sialic acid (Neu5Ac), resulting in naturally humanized influenza virus receptors.
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Structure-guided discovery of potent and dual-acting human parainfluenza virus haemagglutinin-neuraminidase inhibitors. Nat Commun 2014; 5:5268. [PMID: 25327774 DOI: 10.1038/ncomms6268] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 09/12/2014] [Indexed: 12/28/2022] Open
Abstract
Human parainfluenza viruses (hPIVs) cause upper and lower respiratory tract disease in children that results in a significant number of hospitalizations and impacts health systems worldwide. To date, neither antiviral drugs nor vaccines are approved for clinical use against parainfluenza virus, which reinforces the urgent need for new therapeutic discovery strategies. Here we use a multidisciplinary approach to develop potent inhibitors that target a structural feature within the hPIV type 3 haemagglutinin-neuraminidase (hPIV-3 HN). These dual-acting designer inhibitors represent the most potent designer compounds and efficiently block both hPIV cell entry and virion progeny release. We also define the binding mode of these inhibitors in the presence of whole-inactivated hPIV and recombinantly expressed hPIV-3 HN by Saturation Transfer Difference NMR spectroscopy. Collectively, our study provides an antiviral preclinical candidate and a new direction towards the discovery of potential anti-parainfluenza drugs.
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21
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Abstract
Viral infections are initiated by attachment of the virus to host cell surface receptors, including sialic acid-containing glycans. It is now possible to rapidly identify specific glycan receptors using glycan array screening, to define atomic-level structures of virus-glycan complexes and to alter the glycan-binding site to determine the function of glycan engagement in viral disease. This Review highlights general principles of virus-glycan interactions and provides specific examples of sialic acid binding by viruses with stalk-like attachment proteins, including influenza virus, reovirus, adenovirus and rotavirus. Understanding virus-glycan interactions is essential to combating viral infections and designing improved viral vectors for therapeutic applications.
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22
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Sironi E, Colombo L, Lompo A, Messa M, Bonanomi M, Regonesi ME, Salmona M, Airoldi C. Natural Compounds against Neurodegenerative Diseases: Molecular Characterization of the Interaction of Catechins from Green Tea with Aβ1–42, PrP106–126, and Ataxin‐3 Oligomers. Chemistry 2014; 20:13793-800. [DOI: 10.1002/chem.201403188] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Indexed: 12/31/2022]
Affiliation(s)
- Erika Sironi
- Department of Biotechnology and Biosciences University of Milano‐Bicocca, P.zza della Scienza, 2, 20126, Milano (Italy), Fax: (+39) 02‐6448‐3565
| | - Laura Colombo
- Department Biochemistry and Molecular Pharmacology, IRCCS‐Istituto di Ricerche Farmacologiche “Mario Negri”, Via Giuseppe La Masa, 19 20156 Milano (Italy)
| | - Angela Lompo
- Department of Biotechnology and Biosciences University of Milano‐Bicocca, P.zza della Scienza, 2, 20126, Milano (Italy), Fax: (+39) 02‐6448‐3565
| | - Massimo Messa
- Department Biochemistry and Molecular Pharmacology, IRCCS‐Istituto di Ricerche Farmacologiche “Mario Negri”, Via Giuseppe La Masa, 19 20156 Milano (Italy)
| | - Marcella Bonanomi
- Department of Biotechnology and Biosciences University of Milano‐Bicocca, P.zza della Scienza, 2, 20126, Milano (Italy), Fax: (+39) 02‐6448‐3565
| | - Maria Elena Regonesi
- Department of Statistics and Quantitative Methods, University of Milano‐Bicocca, Via Bicocca degli Arcimboldi, 8, 20126, Milano (Italy)
| | - Mario Salmona
- Department Biochemistry and Molecular Pharmacology, IRCCS‐Istituto di Ricerche Farmacologiche “Mario Negri”, Via Giuseppe La Masa, 19 20156 Milano (Italy)
| | - Cristina Airoldi
- Department of Biotechnology and Biosciences University of Milano‐Bicocca, P.zza della Scienza, 2, 20126, Milano (Italy), Fax: (+39) 02‐6448‐3565
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23
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Abstract
A large number of viruses, including many human pathogens, bind cell-surface glycans during the initial steps of infection. Viral glycan receptors such as glycosaminoglycans and sialic acid-containing carbohydrates are often negatively charged, but neutral glycans such as histo-blood group antigens can also function as receptors. The engagement of glycans facilitates attachment and entry and, consequently, is often a key determinant of the host range, tissue tropism, pathogenicity, and transmissibility of viruses. Here, we review current knowledge about virus-glycan interactions using representative crystal structures of viral attachment proteins in complex with glycans. We illuminate the determinants of specificity utilized by different glycan-binding viruses and explore the potential of these interactions for switching receptor specificities within or even between glycan classes. A detailed understanding of these parameters is important for the prediction of binding sites where structural information is not available, and is invaluable for the development of antiviral therapeutics.
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Affiliation(s)
- Luisa J Ströh
- Interfaculty Institute of Biochemistry, University of Tübingen, D-72076 Tübingen, Germany;
| | - Thilo Stehle
- Interfaculty Institute of Biochemistry, University of Tübingen, D-72076 Tübingen, Germany; .,Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee 37232
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24
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Cipolla L, Airoldi C, Sperandeo P, Gianera S, Polissi A, Nicotra F, Gabrielli L. Synthesis and biological evaluation of arabinose 5-phosphate mimics modified at position five. Carbohydr Res 2014; 389:186-91. [DOI: 10.1016/j.carres.2014.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 12/31/2013] [Accepted: 01/08/2014] [Indexed: 01/10/2023]
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25
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Gabrielli L, Merlo S, Airoldi C, Sperandeo P, Gianera S, Polissi A, Nicotra F, Holler TP, Woodard RW, Cipolla L. Arabinose 5-phosphate isomerase as a target for antibacterial design: Studies with substrate analogues and inhibitors. Bioorg Med Chem 2014; 22:2576-83. [DOI: 10.1016/j.bmc.2013.08.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 07/18/2013] [Accepted: 08/05/2013] [Indexed: 01/25/2023]
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26
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Relative roles of GM1 ganglioside, N-acylneuraminic acids, and α2β1 integrin in mediating rotavirus infection. J Virol 2014; 88:4558-71. [PMID: 24501414 DOI: 10.1128/jvi.03431-13] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
UNLABELLED N-acetyl- and N-glycolylneuraminic acids (Sia) and α2β1 integrin are frequently used by rotaviruses as cellular receptors through recognition by virion spike protein VP4. The VP4 subunit VP8*, derived from Wa rotavirus, binds the internal N-acetylneuraminic acid on ganglioside GM1. Wa infection is increased by enhanced internal Sia access following terminal Sia removal from main glycan chains with sialidase. The GM1 ligand cholera toxin B (CTB) reduces Wa infectivity. Here, we found sialidase treatment increased cellular GM1 availability and the infectivity of several other human (including RV-3) and animal rotaviruses, typically rendering them susceptible to methyl α-d-N-acetylneuraminide treatment, but did not alter α2β1 usage. CTB reduced the infectivity of these viruses. Aceramido-GM1 inhibited Wa and RV-3 infectivity in untreated and sialidase-treated cells, and GM1 supplementation increased their infectivity, demonstrating the importance of GM1 for infection. Wa recognition of α2β1 and internal Sia were at least partially independent. Rotavirus usage of GM1 was mapped to VP4 using virus reassortants, and RV-3 VP8* bound aceramido-GM1 by saturation transfer difference nuclear magnetic resonance (STD NMR). Most rotaviruses recognizing terminal Sia did not use GM1, including RRV. RRV VP8* interacted minimally with aceramido-GM1 by STD NMR. Unusually, TFR-41 rotavirus infectivity depended upon terminal Sia and GM1. Competition of CTB, Sia, and/or aceramido-GM1 with cell binding by VP8* from representative rotaviruses showed that rotavirus Sia and GM1 preferences resulted from VP8*-cell binding. Our major finding is that infection by human rotaviruses of commonly occurring VP4 serotypes involves VP8* binding to cell surface GM1 glycan, typically including the internal N-acetylneuraminic acid. IMPORTANCE Rotaviruses, the major cause of severe infantile gastroenteritis, recognize cell surface receptors through virus spike protein VP4. Several animal rotaviruses are known to bind sialic acids at the termini of main carbohydrate chains. Conversely, only a single human rotavirus is known to bind sialic acid. Interestingly, VP4 of this rotavirus bound to sialic acid that forms a branch on the main carbohydrate chain of the GM1 ganglioside. Here, we use several techniques to demonstrate that other human rotaviruses exhibit similar GM1 usage properties. Furthermore, binding by VP4 to cell surface GM1, involving branched sialic acid recognition, is shown to facilitate infection. In contrast, most animal rotaviruses that bind terminal sialic acids did not utilize GM1 for VP4 cell binding or infection. These studies support a significant role for GM1 in mediating host cell invasion by human rotaviruses.
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27
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Structural basis of rotavirus strain preference toward N-acetyl- or N-glycolylneuraminic acid-containing receptors. J Virol 2012; 86:13456-66. [PMID: 23035213 DOI: 10.1128/jvi.06975-11] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The rotavirus spike protein domain VP8* is essential for recognition of cell surface carbohydrate receptors, notably those incorporating N-acylneuraminic acids (members of the sialic acid family). N-Acetylneuraminic acids occur naturally in both animals and humans, whereas N-glycolylneuraminic acids are acquired only through dietary uptake in normal human tissues. The preference of animal rotaviruses for these natural N-acylneuraminic acids has not been comprehensively established, and detailed structural information regarding the interactions of different rotaviruses with N-glycolylneuraminic acids is lacking. In this study, distinct specificities of VP8* for N-acetyl- and N-glycolylneuraminic acids were revealed using biophysical techniques. VP8* protein from the porcine rotavirus CRW-8 and the bovine rotavirus Nebraska calf diarrhea virus (NCDV) showed a preference for N-glycolyl- over N-acetylneuraminic acids, in contrast to results obtained with rhesus rotavirus (RRV). Crystallographic structures of VP8* from CRW-8 and RRV with bound methyl-N-glycolylneuraminide revealed the atomic details of their interactions. We examined the influence of amino acid type at position 157, which is proximal to the ligand's N-acetyl or N-glycolyl moiety and can mutate upon cell culture adaptation. A structure-based hypothesis derived from these results could account for rotavirus discrimination between the N-acylneuraminic acid forms. Infectivity blockade experiments demonstrated that the determined carbohydrate specificities of these VP8* domains directly correlate with those of the corresponding infectious virus. This includes an association between CRW-8 adaption to cell culture, decreased competition by N-glycolylneuraminic acid for CRW-8 infectivity, and a Pro157-to-Ser157 mutation in VP8* that reduces binding affinity for N-glycolylneuraminic acid.
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28
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Lai JCC, Garcia JM, Dyason JC, Böhm R, Madge PD, Rose FJ, Nicholls JM, Peiris JSM, Haselhorst T, von Itzstein M. Influenzavirus-Neuraminidase und eine sekundäre Sialinsäure- Bindungsstelle - Fakt oder Fiktion? Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Lai JCC, Garcia JM, Dyason JC, Böhm R, Madge PD, Rose FJ, Nicholls JM, Peiris JSM, Haselhorst T, von Itzstein M. A secondary sialic acid binding site on influenza virus neuraminidase: fact or fiction? Angew Chem Int Ed Engl 2012; 51:2221-4. [PMID: 22281708 DOI: 10.1002/anie.201108245] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Indexed: 01/25/2023]
Affiliation(s)
- Jimmy C C Lai
- Hong Kong University-Pasteur Research Centre, SAR, China
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30
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Fiege B, Rademacher C, Cartmell J, Kitov PI, Parra F, Peters T. Molecular Details of the Recognition of Blood Group Antigens by a Human Norovirus as Determined by STD NMR Spectroscopy. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105719] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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31
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Fiege B, Rademacher C, Cartmell J, Kitov PI, Parra F, Peters T. Molecular details of the recognition of blood group antigens by a human norovirus as determined by STD NMR spectroscopy. Angew Chem Int Ed Engl 2011; 51:928-32. [PMID: 22170811 DOI: 10.1002/anie.201105719] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Indexed: 01/26/2023]
Affiliation(s)
- Brigitte Fiege
- Center of Structural and Cell Biology in Medicine, Institute of Chemistry, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
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32
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Airoldi C, Giovannardi S, La Ferla B, Jiménez-Barbero J, Nicotra F. Saturation Transfer Difference NMR Experiments of Membrane Proteins in Living Cells under HR-MAS Conditions: The Interaction of the SGLT1 Co-transporter with Its Ligands. Chemistry 2011; 17:13395-9. [DOI: 10.1002/chem.201102181] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Indexed: 12/13/2022]
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Novel structural insights into rotavirus recognition of ganglioside glycan receptors. J Mol Biol 2011; 413:929-39. [PMID: 21945555 DOI: 10.1016/j.jmb.2011.09.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Revised: 08/31/2011] [Accepted: 09/03/2011] [Indexed: 11/20/2022]
Abstract
Rotaviruses ubiquitously infect children under the age of 5, being responsible for more than half a million diarrhoeal deaths each year worldwide. Host cell oligosaccharides containing sialic acid(s) are critical for attachment by rotaviruses. However, to date, no detailed three-dimensional atomic model showing the exact rotavirus interactions with these glycoconjugate receptors has been reported. Here, we present the first crystallographic structures of the rotavirus carbohydrate-recognizing protein VP8* in complex with ganglioside G(M3) glycans. In combination with assessment of the inhibition of rotavirus infectivity by N-acetyl and N-glycolyl forms of this ganglioside, our results reveal key details of rotavirus-ganglioside G(M3) glycan recognition. In addition, they show a direct correlation between the carbohydrate specificities exhibited by VP8* from porcine and by monkey rotaviruses and the respective infectious virus particles. These novel results also indicate the potential binding interactions of rotavirus VP8* with other sialic acid-containing gangliosides.
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34
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Airoldi C, Cardona F, Sironi E, Colombo L, Salmona M, Silva A, Nicotra F, La Ferla B. cis-Glyco-fused benzopyran compounds as new amyloid-β peptide ligands. Chem Commun (Camb) 2011; 47:10266-8. [DOI: 10.1039/c1cc13046c] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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