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Affiliation(s)
- Stephen M. Henry
- Center for Kode Technology Innovation, School of Engineering, Computer & Mathematical Sciences, Auckland University of Technology, Auckland, New Zealand
| | - Nicolai V. Bovin
- Center for Kode Technology Innovation, School of Engineering, Computer & Mathematical Sciences, Auckland University of Technology, Auckland, New Zealand
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation
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Timofeeva TA, Sadykova GK, Rudneva IA, Boravleva EY, Gambaryan AS, Lomakina NF, Mochalova LV, Bovin NV, Usachev EV, Prilipov AG. Changes in the phenotypic properties of highly pathogenic influenza A virus of H5N1 subtype induced by N186I and N186T point mutations in hemagglutinin. Mol Biol 2016. [DOI: 10.1134/s0026893316050174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Synthesis of N-aminoacyl-β-glycopyranosylamines — derivatives of natural sialooligosaccharides. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1489-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Synthesis of 1-BODIPY-labeled 2-amino-2-deoxy-d-glucose, substrate for acetyl-CoA:glucosaminide N-acetyltransferase. MENDELEEV COMMUNICATIONS 2015. [DOI: 10.1016/j.mencom.2015.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Choi Y, Tuzikov AB, Ovchinnikova TV, Bovin NV, Pshezhetsky AV. Novel Direct Assay for Acetyl-CoA:α-Glucosaminide N-Acetyltransferase Using BODIPY-Glucosamine as a Substrate. JIMD Rep 2015; 28:11-18. [PMID: 26493749 PMCID: PMC5059212 DOI: 10.1007/8904_2015_501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 09/17/2015] [Accepted: 09/18/2015] [Indexed: 01/15/2023] Open
Abstract
Heparan sulfate acetyl-CoA:α-glucosaminide N-acetyltransferase (HGSNAT) catalyzes the transmembrane acetylation of heparan sulfate in lysosomes required for its further catabolism. Inherited deficiency of HGSNAT in humans results in lysosomal storage of heparan sulfate and causes severe neurodegenerative disease, mucopolysaccharidosis III type C (MPS IIIC). MPS IIIC patients can potentially benefit from a therapeutic approach based on active site-specific inhibitors of HGSNAT used as pharmacological chaperons to modify the folding of the mutant protein in the patient's cells. This research however was hampered by the absence of the assay suitable for high-throughput screening of drug libraries for HGSNAT inhibitors. The existing method utilizing 4-methylumbelliferyl-β-D-glucosaminide (MU-βGlcN) requires the sequential action of two enzymes, HGSNAT and β-hexosaminidase, whereas the radioactive assay with [C14]-AcCoA is complicated and expensive. We describe a novel direct method to assay HGSNAT enzymatic activity using fluorescent BODIPY-glucosamine as a substrate. The specificity of the assay was tested using cultured fibroblasts of MPS IIIC patients, which showed a profound deficiency of HGSNAT activity as compared to normal controls as well as to MPS IIIA and D patients known to have normal HGSNAT activity. Known competitive HGSNAT inhibitor, glucosamine, had similar inhibition constants for MU-βGlcN and BODIPY-glucosamine acetylation reactions. Altogether our data show that novel HGSNAT assay is specific and potentially applicable for the biochemical diagnosis of MPS IIIC and high-throughput screening for HGSNAT inhibitors.
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Affiliation(s)
- Yoo Choi
- Division of Medical Genetics, Sainte-Justine University Hospital Research Center, University of Montreal, Montréal, QC, Canada
| | - Alexander B Tuzikov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, 117997, Moscow, Russia
| | | | - Nicolai V Bovin
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, 117997, Moscow, Russia
| | - Alexey V Pshezhetsky
- Division of Medical Genetics, Sainte-Justine University Hospital Research Center, University of Montreal, Montréal, QC, Canada.
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Korchagina EY, Henry SM. Synthetic glycolipid-like constructs as tools for glycobiology research, diagnostics, and as potential therapeutics. BIOCHEMISTRY (MOSCOW) 2015; 80:857-71. [DOI: 10.1134/s0006297915070068] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Alterations in hemagglutinin receptor-binding specificity accompany the emergence of highly pathogenic avian influenza viruses. J Virol 2015; 89:5395-405. [PMID: 25741006 DOI: 10.1128/jvi.03304-14] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 02/23/2015] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED Highly pathogenic avian influenza viruses (HPAIVs) of hemagglutinin H5 and H7 subtypes emerge after introduction of low-pathogenic avian influenza viruses (LPAIVs) from wild birds into poultry flocks, followed by subsequent circulation and evolution. The acquisition of multiple basic amino acids at the endoproteolytical cleavage site of the hemagglutinin (HA) is a molecular indicator for high pathogenicity, at least for infections of gallinaceous poultry. Apart from the well-studied significance of the multibasic HA cleavage site, there is only limited knowledge on other alterations in the HA and neuraminidase (NA) molecules associated with changes in tropism during the emergence of HPAIVs from LPAIVs. We hypothesized that changes in tropism may require alterations of the sialyloligosaccharide specificities of HA and NA. To test this hypothesis, we compared a number of LPAIVs and HPAIVs for their HA-mediated binding and NA-mediated desialylation of a set of synthetic receptor analogs, namely, α2-3-sialylated oligosaccharides. NA substrate specificity correlated with structural groups of NAs and did not correlate with pathogenic potential of the virus. In contrast, all HPAIVs differed from LPAIVs by a higher HA receptor-binding affinity toward the trisaccharides Neu5Acα2-3Galβ1-4GlcNAcβ (3'SLN) and Neu5Acα2-3Galβ1-3GlcNAcβ (SiaLe(c)) and by the ability to discriminate between the nonfucosylated and fucosylated sialyloligosaccharides 3'SLN and Neu5Acα2-3Galβ1-4(Fucα1-3)GlcNAcβ (SiaLe(x)), respectively. These results suggest that alteration of the receptor-binding specificity accompanies emergence of the HPAIVs from their low-pathogenic precursors. IMPORTANCE Here, we have found for the first time correlations of receptor-binding properties of the HA with a highly pathogenic phenotype of poultry viruses. Our study suggests that enhanced receptor-binding affinity of HPAIVs for a typical "poultry-like" receptor, 3'SLN, is provided by substitutions in the receptor-binding site of HA which appeared in HA of LPAIVs in the course of transmission of LPAIVs from wild waterfowl into poultry flocks, with subsequent adaptation in poultry. The identification of LPAIVs with receptor characteristics of HPAIVs argues that the sialic acid-binding specificity of the HA may be used as a novel phenotypic marker of HPAIVs.
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8
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Gorelkin PV, Erofeev AS, Kiselev GA, Kolesov DV, Dubrovin EV, Yaminsky IV. Synthetic sialylglycopolymer receptor for virus detection using cantilever-based sensors. Analyst 2015. [DOI: 10.1039/c5an01102g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the rapid, label-free detection of Influenza A viruses using a cantilever transducer modified with a synthetic sialylglycopolymer receptor layer.
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Affiliation(s)
- P. V. Gorelkin
- Chemical department of Lomonosov Moscow State University
- Moscow
- Russia
| | - A. S. Erofeev
- Chemical department of Lomonosov Moscow State University
- Moscow
- Russia
| | | | | | - E. V. Dubrovin
- Physics department of Lomonosov Moscow State University
- Moscow
- Russia
| | - I. V. Yaminsky
- Chemical department of Lomonosov Moscow State University
- Moscow
- Russia
- Advanced Technologies Center
- Moscow
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9
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Smutova V, Albohy A, Pan X, Korchagina E, Miyagi T, Bovin N, Cairo CW, Pshezhetsky AV. Structural basis for substrate specificity of mammalian neuraminidases. PLoS One 2014; 9:e106320. [PMID: 25222608 PMCID: PMC4164519 DOI: 10.1371/journal.pone.0106320] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 07/24/2014] [Indexed: 12/21/2022] Open
Abstract
The removal of sialic acid (Sia) residues from glycoconjugates in vertebrates is mediated by a family of neuraminidases (sialidases) consisting of Neu1, Neu2, Neu3 and Neu4 enzymes. The enzymes play distinct physiological roles, but their ability to discriminate between the types of linkages connecting Sia and adjacent residues and between the identity and arrangement of the underlying sugars has never been systematically studied. Here we analyzed the specificity of neuraminidases by studying the kinetics of hydrolysis of BODIPY-labeled substrates containing common mammalian sialylated oligosaccharides: 3′Sia-LacNAc, 3′SiaLac, SiaLex, SiaLea, SiaLec, 6′SiaLac, and 6′SiaLacNAc. We found significant differences in substrate specificity of the enzymes towards the substrates containing α2,6-linked Sia, which were readily cleaved by Neu3 and Neu1 but not by Neu4 and Neu2. The presence of a branching 2-Fuc inhibited Neu2 and Neu4, but had almost no effect on Neu1 or Neu3. The nature of the sugar residue at the reducing end, either glucose (Glc) or N-acetyl-D-glucosamine (GlcNAc) had only a minor effect on all neuraminidases, whereas core structure (1,3 or 1,4 bond between D-galactose (Gal) and GlcNAc) was found to be important for Neu4 strongly preferring β3 (core 1) to β4 (core 2) isomer. Neu3 and Neu4 were in general more active than Neu1 and Neu2, likely due to their preference for hydrophobic substrates. Neu2 and Neu3 were examined by molecular dynamics to identify favorable substrate orientations in the binding sites and interpret the differences in their specificities. Finally, using knockout mouse models, we confirmed that the substrate specificities observed in vitro were recapitulated in enzymes found in mouse brain tissues. Our data for the first time provide evidence for the characteristic substrate preferences of neuraminidases and their ability to discriminate between distinct sialoside targets.
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Affiliation(s)
- Victoria Smutova
- Division of Medical Genetics, Sainte-Justine University Hospital Research Center, University of Montreal, Montréal, Canada
| | - Amgad Albohy
- Alberta Glycomics Center, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Xuefang Pan
- Division of Medical Genetics, Sainte-Justine University Hospital Research Center, University of Montreal, Montréal, Canada
| | - Elena Korchagina
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia
| | - Taeko Miyagi
- Institute of Molecular Biomembrane and Glycobiology, Tohoku Pharmaceutical University, Sendai, Miyagi, Japan
| | - Nicolai Bovin
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia
| | - Christopher W. Cairo
- Alberta Glycomics Center, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
| | - Alexey V. Pshezhetsky
- Division of Medical Genetics, Sainte-Justine University Hospital Research Center, University of Montreal, Montréal, Canada
- * E-mail:
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10
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Likhosherstov LM, Novikova OS, Yamskov IA, Piskarev VE. Synthesis of N-glycyl-β-glycopyranosylamines, human milk fucooligosaccharide derivatives. Russ Chem Bull 2013. [DOI: 10.1007/s11172-012-0250-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Hendricks GL, Weirich KL, Viswanathan K, Li J, Shriver ZH, Ashour J, Ploegh HL, Kurt-Jones EA, Fygenson DK, Finberg RW, Comolli JC, Wang JP. Sialylneolacto-N-tetraose c (LSTc)-bearing liposomal decoys capture influenza A virus. J Biol Chem 2013; 288:8061-8073. [PMID: 23362274 DOI: 10.1074/jbc.m112.437202] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Influenza is a severe disease in humans and animals with few effective therapies available. All strains of influenza virus are prone to developing drug resistance due to the high mutation rate in the viral genome. A therapeutic agent that targets a highly conserved region of the virus could bypass resistance and also be effective against multiple strains of influenza. Influenza uses many individually weak ligand binding interactions for a high avidity multivalent attachment to sialic acid-bearing cells. Polymerized sialic acid analogs can form multivalent interactions with influenza but are not ideal therapeutics due to solubility and toxicity issues. We used liposomes as a novel means for delivery of the glycan sialylneolacto-N-tetraose c (LSTc). LSTc-bearing decoy liposomes form multivalent, polymer-like interactions with influenza virus. Decoy liposomes competitively bind influenza virus in hemagglutination inhibition assays and inhibit infection of target cells in a dose-dependent manner. Inhibition is specific for influenza virus, as inhibition of Sendai virus and respiratory syncytial virus is not observed. In contrast, monovalent LSTc does not bind influenza virus or inhibit infectivity. LSTc decoy liposomes prevent the spread of influenza virus during multiple rounds of replication in vitro and extend survival of mice challenged with a lethal dose of virus. LSTc decoy liposomes co-localize with fluorescently tagged influenza virus, whereas control liposomes do not. Considering the conservation of the hemagglutinin binding pocket and the ability of decoy liposomes to form high avidity interactions with influenza hemagglutinin, our decoy liposomes have potential as a new therapeutic agent against emerging influenza strains.
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Affiliation(s)
- Gabriel L Hendricks
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Kim L Weirich
- Biomolecular Science and Engineering Program, University of California, Santa Barbara, California 93106
| | - Karthik Viswanathan
- Department of Biological Engineering, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Jing Li
- Department of Biological Engineering, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Zachary H Shriver
- Department of Biological Engineering, Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Joseph Ashour
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142
| | - Hidde L Ploegh
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142
| | - Evelyn A Kurt-Jones
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Deborah K Fygenson
- Biomolecular Science and Engineering Program, University of California, Santa Barbara, California 93106; Department of Physics, University of California, Santa Barbara, California 93106
| | - Robert W Finberg
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - James C Comolli
- Charles Stark Draper Laboratory, Department of Bioengineering, Cambridge, Massachusetts 02139
| | - Jennifer P Wang
- Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts 01605.
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Rudneva I, Ignatieva A, Timofeeva T, Shilov A, Kushch A, Masalova O, Klimova R, Bovin N, Mochalova L, Kaverin N. Escape mutants of pandemic influenza A/H1N1 2009 virus: variations in antigenic specificity and receptor affinity of the hemagglutinin. Virus Res 2012; 166:61-7. [PMID: 22459010 DOI: 10.1016/j.virusres.2012.03.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 03/01/2012] [Accepted: 03/05/2012] [Indexed: 01/04/2023]
Abstract
A panel of 6 neutralizing monoclonal antibodies (MAbs) raised against A/Moscow/IIV01/2009 (H1N1) virus isolated during the 2009 pandemic was used for the selection of 26 escape mutants. The mutants were characterized in immune cross-reactions with the panel of MAbs. The sequencing of the mutant HA genes revealed 5 amino acid positions recognized by monoclonal antibodies: 129, 156, 158, 159, and 190 (H3 numbering). The amino acid positions were distributed in two epitopes belonging to antigenic sites Sa and Sb. The mutant HAs exhibited variations in the affinity to synthetic high molecular mass sialic acid-containing receptor analogues. Results are discussed in connection with the antigenic drift potential of the "swine-like" pandemic 2009 influenza virus.
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MESH Headings
- Antibodies, Neutralizing/immunology
- Antibodies, Viral/immunology
- Antigens, Viral/genetics
- Antigens, Viral/immunology
- DNA Mutational Analysis
- Epitopes/genetics
- Epitopes/immunology
- Hemagglutinin Glycoproteins, Influenza Virus/genetics
- Hemagglutinin Glycoproteins, Influenza Virus/immunology
- Humans
- Influenza A Virus, H1N1 Subtype/genetics
- Influenza A Virus, H1N1 Subtype/immunology
- Influenza A Virus, H1N1 Subtype/isolation & purification
- Influenza, Human/virology
- Molecular Sequence Data
- Moscow
- Mutant Proteins/genetics
- Mutant Proteins/immunology
- Mutation, Missense
- Selection, Genetic
- Sequence Analysis, DNA
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Affiliation(s)
- Irina Rudneva
- D.I. Ivanovsky Institute of Virology, Gamaleya Str. 16, Moscow 123098, Russia.
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Ghadban A, Albertin L, Moussavou Mounguengui RW, Peruchon A, Heyraud A. Synthesis of β-d-glucopyranuronosylamine in aqueous solution: kinetic study and synthetic potential. Carbohydr Res 2011; 346:2384-93. [DOI: 10.1016/j.carres.2011.08.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 08/16/2011] [Accepted: 08/18/2011] [Indexed: 10/17/2022]
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Ghadban A, Albertin L, Condamine E, Mounguengui RWM, Heyraud A. NMR and MS study of the formation of β-d-glucopyranosylamine uronic acid in aqueous solution. CAN J CHEM 2011. [DOI: 10.1139/v11-064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The products of the reaction of d-glucuronic acid with various combinations of ammonia and volatile ammonium salts in water were studied by NMR and MS spectroscopy. For long reaction times (~24 h), the expected products β-d-glucopyranosylamine uronic acid and ammonium N-(β-d-glucopyranosyluronic acid)carbamate were obtained in good-to-high yield, whereas seven intermediate species were identified in samples taken at earlier reaction times. 1H–1H homonuclear and 1H–13C heteronuclear correlation experiments enabled a complete assignment of the 1H and 13C NMR spectra of the starting and final compounds, and a partial assignment of the peaks of intermediate species. Based on these results, a 1H NMR protocol for the quantification of the different compounds taking part in the reaction was developed, which was used to monitor the evolution of the composition of an early reaction sample redissolved in D2O. It was thus established that two of the observed intermediate species are actually the α anomer of the main products, whereas the others are precursors to the formation of α/β-d-glucopyranosylamine uronic acid and ammonium N-(α/β-d-glucopyranosyluronic acid)carbamate. The correct assignments for the 1H and 13C spectra of d-glucuronic acid in D2O are also reported.
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Affiliation(s)
- Ali Ghadban
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble CEDEX 9, France
| | - Luca Albertin
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble CEDEX 9, France
| | - Eric Condamine
- Institut de Biologie Structurale “Jean-Pierre Ebel”, UMR5075 (CEA/CNRS/UJF), 41 rue Jules Horowitz, 38027 Grenoble, France
| | | | - Alain Heyraud
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP53, 38041 Grenoble CEDEX 9, France
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15
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Synthesis of poly(aspartimide)-based bio-glycoconjugates. Carbohydr Res 2010; 345:33-40. [DOI: 10.1016/j.carres.2009.08.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2009] [Revised: 08/21/2009] [Accepted: 08/25/2009] [Indexed: 11/20/2022]
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Carlescu I, Scutaru D, Popa M, Uglea CV. Synthetic sialic-acid-containing polyvalent antiviral inhibitors. Med Chem Res 2008. [DOI: 10.1007/s00044-008-9139-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Shtyrya Y, Mochalova L, Voznova G, Rudneva I, Shilov A, Kaverin N, Bovin N. Adjustment of receptor-binding and neuraminidase substrate specificities in avian-human reassortant influenza viruses. Glycoconj J 2008; 26:99-109. [PMID: 18661232 DOI: 10.1007/s10719-008-9169-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2008] [Revised: 06/30/2008] [Accepted: 07/03/2008] [Indexed: 12/12/2022]
Abstract
Balanced action of hemagglutinin (HA) and neuraminidase (NA) is an important condition of influenza virus efficient replication, but a role of HA and NA specificities at oligosaccharide level in maintaining such a balance remains poorly studied. Avian virus HA binds exclusively and NA digests efficiently alpha2-3-sialylated carbohydrate chains, while human virus HA interacts with alpha2-6 chains and low-active NA cleaves both alpha2-3- and alpha2-6-sialosides. Reassortment between viruses leading to appearance of avian virus HA and human virus NA on the virion surface often resulted in decreasing the replicative potential of the formed variants because of disturbance of a functional balance between "alien" HA and NA. A restoration of the reassortant productivity happened due to the appearance of amino acid substitutions in HA and, sometimes, NA. Here, a role of NA and HA oligosaccharide specificities in a restoration of HA-NA functional balance in high-yield passage variants was studied. Postreassortment changes in HA receptor-binding and NA substrate specificities for three reassortant/passage variant virus pairs towards 3'SiaLac, 3'SiaLacNAc, SiaLe(c), SiaLe(a), SiaLe(x), 6'SiaLac, and 6'SiaLacNAc were determined. Selection of the high-yield variants of the human-avian reassortants led either to twofold decrease in the affinity of HA for most alpha2-3-sialosides and the appearance of affinity for alpha2-6-sialosides (H3N2 reassortant), or to decreasing the HA affinity for SiaLe(c) and SiaLe(a) (H3N1 reassortant), or to enhancing the ability of NA to discriminate between alpha2-3/2-6 substrates (H4N1 reassortant). Thus, all postreassortment changes in oligosaccharide specificities of "alien" HA and NA were directed towards their adjustment to each other, but by different manner.
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Affiliation(s)
- Yulia Shtyrya
- Russian Academy of Sciences, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia.
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18
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Gambaryan AS, Tuzikov AB, Pazynina GV, Desheva JA, Bovin NV, Matrosovich MN, Klimov AI. 6-sulfo sialyl Lewis X is the common receptor determinant recognized by H5, H6, H7 and H9 influenza viruses of terrestrial poultry. Virol J 2008; 5:85. [PMID: 18652681 PMCID: PMC2515299 DOI: 10.1186/1743-422x-5-85] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2008] [Accepted: 07/24/2008] [Indexed: 12/11/2022] Open
Abstract
Background Influenza A viruses of domestic birds originate from the natural reservoir in aquatic birds as a result of interspecies transmission and adaptation to new host species. We previously noticed that influenza viruses isolated from distinct orders of aquatic and terrestrial birds may differ in their fine receptor-binding specificity by recognizing the structure of the inner parts of Neu5Acα2-3Gal-terminated sialyloligosaccharide receptors. To further characterize these differences, we studied receptor-binding properties of a large panel of influenza A viruses from wild aquatic birds, poultry, pigs and horses. Results Using a competitive solid-phase binding assay, we determined viral binding to polymeric conjugates of sialyloligosaccharides differing by the type of Neu5Acα-Gal linkage and by the structure of the more distant parts of the oligosaccharide chain. Influenza viruses isolated from terrestrial poultry differed from duck viruses by an enhanced binding to sulfated and/or fucosylated Neu5Acα2-3Gal-containing sialyloligosaccharides. Most of the poultry viruses tested shared a high binding affinity for the 6-sulfo sialyl Lewis X (Su-SLex). Efficient binding of poultry viruses to Su-SLex was often accompanied by their ability to bind to Neu5Acα2-6Gal-terminated (human-type) receptors. Such a dual receptor-binding specificity was demonstrated for the North American and Eurasian H7 viruses, H9N2 Eurasian poultry viruses, and H1, H3 and H9 avian-like virus isolates from pigs. Conclusion Influenza viruses of terrestrial poultry differ from ancestral duck viruses by enhanced binding to sulfated and/or fucosylated Neu5Acα2-3Gal-terminated receptors and, occasionally, by the ability to bind to Neu5Acα2-6Gal-terminated (human-type) receptors. These findings suggest that the adaptation to receptors in poultry can enhance the potential of an avian virus for avian-to-human transmission and pandemic spread.
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Affiliation(s)
- Alexandra S Gambaryan
- Chumakov Institute of Poliomyelitis and Viral Encephalitides, RAMS, 142782 Moscow, Russia.
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Synthesis of bi- and tervalent ligands of galectins, derivatives of β-lactosylamine, with the amino group in the terminal position of the spacer. Russ Chem Bull 2008. [DOI: 10.1007/s11172-008-0104-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Mochalova L, Kurova V, Shtyrya Y, Korchagina E, Gambaryan A, Belyanchikov I, Bovin N. Oligosaccharide specificity of influenza H1N1 virus neuraminidases. Arch Virol 2007; 152:2047-57. [PMID: 17680329 DOI: 10.1007/s00705-007-1024-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2007] [Accepted: 06/04/2007] [Indexed: 12/12/2022]
Abstract
A fluorescent neuraminidase (NA) assay has been developed; 20 samples in five replicates could be analyzed at the same time, allowing us to study the kinetics of the enzyme-substrate interaction. The specificities of six influenza H1N1 virus NAs for BODIPY-labeled 3'SiaLac, 3'SiaLacNAc, SiaLe(c), SiaLe(a), 6'SiaLac, and 6'SiaLacNAc were evaluated. The duck virus NA hydrolyzed 6'SiaLac and 6'SiaLacNAc 50 times more slowly than 2-3 isomers. Swine viruses digested SiaLe(a) and 2-6 sialosides 20 times more slowly than 2-3 trisaccharides. For the human viruses, the difference between 2-6 and 2-3 oligosaccharides desialylation efficiency did not exceed five times; notably, the inner core of 2-3 sialosaccharide was discriminated. The results are evidence that influenza virus NAs can distinguish substrate structure at the tri- and tetrasaccharide level.
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Affiliation(s)
- L Mochalova
- Russian Academy of Sciences, Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Moscow, Russia
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21
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Barclay WS, Jones IM, Osborn HMI, Phillipson L, Ren J, Talevera GA, Thompson CI. Probing the receptor interactions of an H5 avian influenza virus using a baculovirus expression system and functionalised poly(acrylic acid) ligands. Bioorg Med Chem 2007; 15:4038-47. [PMID: 17451959 DOI: 10.1016/j.bmc.2007.03.085] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2007] [Revised: 03/23/2007] [Accepted: 03/30/2007] [Indexed: 11/22/2022]
Abstract
Influenza viruses attach to host cells by binding to terminal sialic acid (Neu5Ac) on glycoproteins or glycolipids. Both the linkage of Neu5Ac and the identity of other carbohydrates within the oligosaccharide are thought to play roles in restricting the host range of the virus. In this study, the receptor specificity of an H5 avian influenza virus haemagglutinin protein that has recently infected man (influenza strain A/Vietnam/1194/04) has been probed using carbohydrate functionalised poly(acrylic acid) polymers. A baculovirus expression system that allows facile and safe analysis of the Neu5Ac binding specificity of mutants of H5 HA engineered at sites that are predicted to effect a switch in host range has also been developed.
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Affiliation(s)
- Wendy S Barclay
- School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK
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22
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Rapoport EM, Mochalova LV, Gabius HJ, Romanova J, Bovin NV. Search for additional influenza virus to cell interactions. Glycoconj J 2006; 23:115-25. [PMID: 16575529 DOI: 10.1007/s10719-006-5444-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Sialyl oligosaccharides have long been considered to be the sole receptors for influenza virus. However, according to [1] some viruses are able to grow in sialic-free MDCK cells. Here we attempted to reveal a possible second, non-sialic receptor, hypothesizing the involvement of additional carbohydrate lectin recognition in influenza virus reception process, first of all in situations when a lectin of the host cell could recognize the viral carbohydrate ligand. We tested the presence of galactose- and sialic acid-binding lectins, as well as mannoside- and sulfo-N-acetyllactosamine-recognizing properties of MDCK and Vero cells using polyacrylamide neoglycoconjugates and antibodies. MDCK cells bind galactoside probes stronger than Vero cells, whereas Vero cells bind preferentially sialoside, mannoside and various sulfo-oligosaccharide probes. The probing of viruses with the neoglycoconjugates revealed specific 6'-HSO (3) LacNAc (but not other sulfated oligosaccharides) binding property of A and B human strains. Affinity of 6'-HSO (3) LacNAc probe was comparable with affinity of 6'-SiaLac probe but the binding was not inhibited by the sialooligosaccharide.
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Affiliation(s)
- E M Rapoport
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
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23
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Mochalova LV, Korchagina EY, Kurova VS, Shtyria JA, Gambaryan AS, Bovin NV. Fluorescent assay for studying the substrate specificity of neuraminidase. Anal Biochem 2006; 341:190-3. [PMID: 15866544 DOI: 10.1016/j.ab.2005.02.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2004] [Indexed: 02/07/2023]
Affiliation(s)
- L V Mochalova
- Shemyakin & Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
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24
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Siebert HC, Rosen J, Seyrek K, Kaltner H, André S, Bovin NV, Nyholm PG, Sinowatz F, Gabius HJ. α2,3/α2,6-Sialylation of N-glycans: non-synonymous signals with marked developmental regulation in bovine reproductive tracts. Biochimie 2006; 88:399-410. [PMID: 16360259 DOI: 10.1016/j.biochi.2005.09.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2005] [Accepted: 09/23/2005] [Indexed: 10/25/2022]
Abstract
The glycan part endows cellular glycoconjugates with significant potential for biological recognition. N-Glycan branches often end with alpha2,3/alpha2,6-sialylation, posing the question whether and how placement of the sialic acid at 3 - or 6 -acceptor positions of galactose has cell biological relevance. As attractive model to study developmental regulation we monitored the expression of alpha2,3/alpha2,6-sialylated determinants in fetal and adult bovine testes and ovaries by lectin histochemistry. Distinct expression patterns were detected in both organ types. Oocyte staining, as a prominent example, was restricted to the presence of alpha2,6-sialylated glycans. Treatment with sialidase abolished binding and thus excluded sulfate esters as lectin targets. We added computer simulations to rationalize the observed evidence for non-random expression of the two closely related sialylgalactose isomers. Extensive molecular mechanics and molecular dynamics calculations reveal that the seemingly minor shift of the glycosidic bond from the alpha2,3 position to the alpha2,6 configuration causes significant shape and flexibility changes. They give each disaccharide its own characteristic meaning as signal in the sugar code.
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Affiliation(s)
- Hans-Christian Siebert
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinärstr. 13, 80539 München, Germany
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25
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Rudneva IA, Ilyushina NA, Timofeeva TA, Webster RG, Kaverin NV. Restoration of virulence of escape mutants of H5 and H9 influenza viruses by their readaptation to mice. J Gen Virol 2005; 86:2831-2838. [PMID: 16186239 DOI: 10.1099/vir.0.81185-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Antigenic mapping of the haemagglutinin (HA) molecule of H5 and H9 influenza viruses by selecting escape mutants with monoclonal anti-HA antibodies and subjecting the selected viruses to immunological analysis and sequencing has previously been performed. The viruses used as wild-type strains were mouse-adapted variants of the original H5 and H9 isolates. Phenotypic characterization of the escape mutants revealed that the amino acid change in HA that conferred resistance to a monoclonal antibody was sometimes associated with additional effects, including decreased virulence for mice. In the present study, the low-virulence H5 and H9 escape mutants were readapted to mice. Analysis of the readapted variants revealed that the reacquisition of virulence was not necessarily achieved by reacquisition of the wild-type HA gene sequence, but was also associated either with the removal of a glycosylation site (the one acquired previously by the escape mutant) without the exact restoration of the initial wild-type amino acid sequence, or, for an H5 escape mutant that had no newly acquired glycosylation sites, with an additional amino acid change in a remote part of the HA molecule. The data suggest that such 'compensating' mutations, removing the damaging effects of antibody-selected amino acid changes, may be important in the course of influenza virus evolution.
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Affiliation(s)
- Irina A Rudneva
- The D. I. Ivanovsky Institute of Virology, 16 Gamaleya Street, 123098 Moscow, Russia
| | - Natalia A Ilyushina
- Division of Virology, Department of Infectious Diseases, St Jude Children's Research Hospital, 332 North Lauderdale Street, Memphis, TN 38105-2794, USA
- The D. I. Ivanovsky Institute of Virology, 16 Gamaleya Street, 123098 Moscow, Russia
| | - Tatiana A Timofeeva
- The D. I. Ivanovsky Institute of Virology, 16 Gamaleya Street, 123098 Moscow, Russia
| | - Robert G Webster
- Division of Virology, Department of Infectious Diseases, St Jude Children's Research Hospital, 332 North Lauderdale Street, Memphis, TN 38105-2794, USA
| | - Nikolai V Kaverin
- The D. I. Ivanovsky Institute of Virology, 16 Gamaleya Street, 123098 Moscow, Russia
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26
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Gambaryan AS, Boravleva EY, Matrosovich TY, Matrosovich MN, Klenk HD, Moiseeva EV, Tuzikov AB, Chinarev AA, Pazynina GV, Bovin NV. Polymer-bound 6' sialyl-N-acetyllactosamine protects mice infected by influenza virus. Antiviral Res 2005; 68:116-23. [PMID: 16214231 DOI: 10.1016/j.antiviral.2005.07.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2005] [Revised: 07/29/2005] [Accepted: 07/29/2005] [Indexed: 12/11/2022]
Abstract
To develop a mouse model for testing receptor attachment inhibitors of human influenza viruses, the human clinical virus isolate in MDCK cells A/NIB/23/89M (H1N1) was adapted to mice by serial passaging through mouse lungs. The adaptation enhanced the viral pathogenicity for mice, but preserved the virus receptor binding phenotype, preferential binding to 2-6-linked sialic acid receptors and low affinity for 2-3-linked receptors. Sequencing of the HA gene of the mouse-adapted virus A/NIB/23/89-MA revealed a loss of the glycosylation sites in positions 94 and 163 of HA1 and substitutions 275Asp-->Gly in HA1 and 145Asn-->Asp in HA2. The four mouse strains tested differed significantly in their sensitivity to A/NIB/23/89-MA with the sensitivity increasing in the order of BALB/cJCitMoise, C57BL/6LacSto, CBA/CaLacSto and A/SnJCitMoise strains. Testing of protective efficacy of the polyacrylamide conjugate bearing Neu5Acalpha2-6Galbeta1-4GlcNAc trisaccharide under conditions of lethal or sublethal virus infection demonstrated a strong protective effect of this preparation. In particular, aerosol treatment of mice with the polymeric attachment inhibitor on 24-110 h after infection completely prevented mortality in sensitive animals and lessened disease symptoms in more resistant mouse strains.
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Affiliation(s)
- A S Gambaryan
- M.P. Chumakov Institute of Poliomyelitis and Viral Encephalitides, Russian Academy of Medical Sciences, 142782 Moscow, Russia
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27
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Gambaryan A, Yamnikova S, Lvov D, Tuzikov A, Chinarev A, Pazynina G, Webster R, Matrosovich M, Bovin N. Receptor specificity of influenza viruses from birds and mammals: new data on involvement of the inner fragments of the carbohydrate chain. Virology 2005; 334:276-83. [PMID: 15780877 DOI: 10.1016/j.virol.2005.02.003] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2004] [Revised: 01/12/2005] [Accepted: 02/01/2005] [Indexed: 11/24/2022]
Abstract
We studied receptor-binding properties of influenza virus isolates from birds and mammals using polymeric conjugates of sialooligosaccharides terminated with common Neu5Ac alpha2-3Gal beta fragment but differing by the structure of the inner part of carbohydrate chain. Viruses isolated from distinct avian species differed by their recognition of the inner part of oligosaccharide receptor. Duck viruses displayed high affinity for receptors having beta1-3 rather than beta1-4 linkage between Neu5Ac alpha2-3Gal-disaccharide and penultimate N-acetylhexosamine residue. Fucose and sulfate substituents at this residue had negative and low effect, respectively, on saccharide binding to duck viruses. By contrast, gull viruses preferentially bound to receptors bearing fucose at N-acetylglucosamine residue, whereas chicken and mammalian viruses demonstrated increased affinity for oligosaccharides that harbored sulfo group at position 6 of (beta1-4)-linked GlcNAc. These data suggest that although all avian influenza viruses preferentially bind to Neu5Ac alpha2-3Gal-terminated receptors, the fine receptor specificity of the viruses varies depending on the avian species. Further studies are required to determine whether observed host-dependent differences in the receptor specificity of avian viruses can affect their ability to infect humans.
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Affiliation(s)
- Alexandra Gambaryan
- Chumakov Institute of Poliomyelitis and Viral Encephalitides, Russian Academy of Medical Sciences, Moscow, Russia
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28
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Ilyushina N, Rudneva I, Gambaryan A, Bovin N, Kaverin N. Monoclonal antibodies differentially affect the interaction between the hemagglutinin of H9 influenza virus escape mutants and sialic receptors. Virology 2004; 329:33-9. [PMID: 15476872 DOI: 10.1016/j.virol.2004.08.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2004] [Revised: 04/30/2004] [Accepted: 08/03/2004] [Indexed: 11/29/2022]
Abstract
To determine the receptor binding properties of various H9 influenza virus escape mutants in the presence and absence of antibody, sialyloligosaccharides conjugated with biotinylated polyacrylamide were used. A mutant virus with a L226Q substitution showed an increased affinity for the Neu5Acalpha2-3Galbeta1-4Glc. Several escape mutants viruses carrying the mutation N193D bound to Neu5Acalpha2-6Galbeta1-4GlcNAc considerably stronger than to Neu5Acalpha2-6Galbeta1-4Glc. Several monoclonal antibodies unable to neutralize the escape mutants preserved the ability to bind to the hemagglutinin as revealed by enzyme-linked immunosorbent assay. In each case, the bound monoclonal antibodies did not prevent the binding of the mutant HA to high affinity substrates and did not displace them from the virus binding sites. Together, these data suggest that amino acid changes selected by antibody pressure may be involved in the specificity of host-cell recognition by H9 hemagglutinin and in the ability of viruses with these mutations to escape the neutralizing effect of antibodies in a differential way, depending on the specificity of the host cell receptor. It may be important in the natural evolution of the H9 subtype, a plausible candidate for the agent likely to cause a future pandemic.
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Affiliation(s)
- Natalia Ilyushina
- Laboratory of Virus Physiology, The D.I. Ivanovsky Institute of Virology, 16 Gamaleya Street, Moscow 123098, Russia.
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29
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Ilyushina NA, Rudneva IA, Gambaryan AS, Tuzikov AB, Bovin NV. Receptor specificity of H5 influenza virus escape mutants. Virus Res 2004; 100:237-41. [PMID: 15019242 DOI: 10.1016/j.virusres.2003.12.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2003] [Revised: 12/22/2003] [Accepted: 12/29/2003] [Indexed: 11/19/2022]
Abstract
The binding of viruses to synthetic polyacrylamide (PAA)-based sialylglycoconjugates was used to characterize the receptor specificities of antibody escape mutants of the influenza virus A/Mallard/Pennsylvania/10218/84 (H5N2). The sialylglycoconjugates that were used carried identical terminal Neu5Acalpha2-3Gal moieties but differed in the structure of the next saccharide residue(s). Our data show that mutations in the vicinity of the haemagglutinin (HA) receptor-binding site (RBS) effect the recognition of the third saccharide residue and change the affinity pattern of binding. The affinity of the majority of the escape mutants for sialyl receptors increased compared to the parental strain.
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Affiliation(s)
- N A Ilyushina
- Laboratory of Virus Physiology, The D.I. Ivanovsky Institute of Virology, Gamaleya Street 16, 123098 Moscow, Russia.
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30
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Hu YC, Liu Y, Pan CY. Reversible addition-fragmentation transfer polymerization ofp-nitrophenyl acrylate and synthesis of diblock copolymers poly(p-nitrophenyl acrylate)-b-polystyrene. ACTA ACUST UNITED AC 2004. [DOI: 10.1002/pola.20290] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Mochalova L, Gambaryan A, Romanova J, Tuzikov A, Chinarev A, Katinger D, Katinger H, Egorov A, Bovin N. Receptor-binding properties of modern human influenza viruses primarily isolated in Vero and MDCK cells and chicken embryonated eggs. Virology 2003; 313:473-80. [PMID: 12954214 DOI: 10.1016/s0042-6822(03)00377-5] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
To study the receptor specificity of modern human influenza H1N1 and H3N2 viruses, the analogs of natural receptors, namely sialyloligosaccharides conjugated with high molecular weight (about 1500 kDa) polyacrylamide as biotinylated and label-free probes, have been used. Viruses isolated from clinical specimens were grown in African green monkey kidney (Vero) or Madin-Darby canine kidney (MDCK) cells and chicken embryonated eggs. All Vero-derived viruses had hemagglutinin (HA) sequences indistinguishable from original viruses present in clinical samples, but HAs of three of seven tested MDCK-derived isolates had one or two amino acid substitutions. Despite these host-dependent mutations and differences in the structure of HA molecules of individual strains, all studied Vero- and MDCK-isolated viruses bound to Neu5Ac alpha2-6Galbeta1-4GlcNAc (6'SLN) essentially stronger than to Neu5Acalpha2-6Galbeta1-4Glc (6'SL). Such receptor-binding specificity has been typical for earlier isolated H1N1 human influenza viruses, but there is a new property of H3N2 viruses that has been circulating in the human population during recent years. Propagation of human viruses in chicken embryonated eggs resulted in a selection of variants with amino acid substitutions near the HA receptor-binding site, namely Gln226Arg or Asp225Gly for H1N1 viruses and Leu194Ile and Arg220Ser for H3N2 viruses. These HA mutations disturb the observed strict 6'SLN specificity of recent human influenza viruses.
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Affiliation(s)
- Larisa Mochalova
- Shemyakin Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
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Gambaryan AS, Tuzikov AB, Chinarev AA, Juneja LR, Bovin NV, Matrosovich MN. Polymeric inhibitor of influenza virus attachment protects mice from experimental influenza infection. Antiviral Res 2002; 55:201-5. [PMID: 12076764 DOI: 10.1016/s0166-3542(02)00020-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Synthetic sialic acid-containing macromolecules inhibit influenza virus attachment to target cells and suppress the virus-mediated hemagglutination and neutralize virus infectivity in cell culture. To test the protective effects of attachment inhibitors in vivo, mice were infected with mouse-adapted influenza virus A/Aichi/2/68 (H3N2) and treated with synthetic polyacrylamide-based sialylglycopolymer PAA-YDS bearing moieties of (Neu5Acalpha2-6Galbeta1-4GlcNAcbeta1-2Manalpha1)2-3,6Manbeta1-4GlcNAcbeta1-4GlcNAc. Single intranasal inoculations with PAA-YDS 30 min before or 10 min after infection increased the survival of mice (P<0.01). Multiple treatments with aerosolized PAA-YDS on days 2-5 post infection also increased survival (P<0.01), alleviated disease symptoms, and decreased lesions in the mouse lungs. These data suggest that synthetic polyvalent inhibitors of virus attachment can be used for prevention and treatment of influenza.
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Affiliation(s)
- A S Gambaryan
- M.P. Chumakov Institute of Poliomyelitis and Viral Encephalitides, Russian Academy of Medical Sciences, 142 782, Moscow, Russia
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33
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Shevchenko VP, Nagaev IY, Myasoedov NF, Tuzikov AB, Bovin NV. Palladium-catalysed 3H-labelling of Neu5AcOMe and spacered 3′-sialyllactose. MENDELEEV COMMUNICATIONS 2002. [DOI: 10.1070/mc2002v012n06abeh001654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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