Screening of a Library of Oligosaccharides ...
Type de document :
Article dans une revue scientifique
URL permanente :
Titre :
Screening of a Library of Oligosaccharides Targeting Lectin LecB of Pseudomonas Aeruginosa and Synthesis of High Affinity Oligoglycoclusters
Auteur(s) :
Dupin, Lucie [Auteur]
Institut des Nanotechnologies de Lyon [INL]
Noël, Mathieu [Auteur]
Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] [IBMM]
Bonnet, Silvère [Auteur]
Meyer, Albert [Auteur]
Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] [IBMM]
Géhin, Thomas [Auteur]
Institut des Nanotechnologies de Lyon [INL]
Bastide, Ludovic [Auteur]
Randriantsoa, Mialy [Auteur]
Souteyrand, Eliane [Auteur]
Institut des Nanotechnologies de Lyon [INL]
Cottin, Claire [Auteur]
Vergoten, Gerard [Auteur]
Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576
Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576
Vasseur, Jean-Jacques [Auteur]
Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] [IBMM]
Morvan, François [Auteur]
Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] [IBMM]
Chevolot, Yann [Auteur]
Institut des Nanotechnologies de Lyon [INL]
Darblade, Benoît [Auteur]
Institut des Nanotechnologies de Lyon [INL]
Noël, Mathieu [Auteur]
Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] [IBMM]
Bonnet, Silvère [Auteur]
Meyer, Albert [Auteur]
Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] [IBMM]
Géhin, Thomas [Auteur]
Institut des Nanotechnologies de Lyon [INL]
Bastide, Ludovic [Auteur]
Randriantsoa, Mialy [Auteur]
Souteyrand, Eliane [Auteur]
Institut des Nanotechnologies de Lyon [INL]
Cottin, Claire [Auteur]
Vergoten, Gerard [Auteur]

Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576
Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576
Vasseur, Jean-Jacques [Auteur]
Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] [IBMM]
Morvan, François [Auteur]
Institut des Biomolécules Max Mousseron [Pôle Chimie Balard] [IBMM]
Chevolot, Yann [Auteur]
Institut des Nanotechnologies de Lyon [INL]
Darblade, Benoît [Auteur]
Titre de la revue :
Molecules
Numéro :
23
Pagination :
3073
Date de publication :
2018-11-24
ISSN :
1420-3049
Mot(s)-clé(s) en anglais :
oligosaccharide
glycocluster
Pseudomonas aeruginosa
anti-bacterial
glycoconjugate
glycocluster
Pseudomonas aeruginosa
anti-bacterial
glycoconjugate
Discipline(s) HAL :
Chimie/Chimie théorique et/ou physique
Résumé en anglais : [en]
The Gram negative bacterium Pseudomonas aeruginosa (PA) is an opportunistic bacterium that causes severe and chronic infection of immune-depressed patients. It has the ability to form a biofilm that gives a selective ...
Lire la suite >The Gram negative bacterium Pseudomonas aeruginosa (PA) is an opportunistic bacterium that causes severe and chronic infection of immune-depressed patients. It has the ability to form a biofilm that gives a selective advantage to the bacteria with respect to antibiotherapy and host defenses. Herein, we have focused on the tetrameric soluble lectin which is involved in bacterium adherence to host cells, biofilm formation, and cytotoxicity. It binds to l-fucose, d-mannose and glycan exposing terminal fucose or mannose. Using a competitive assay on microarray, 156 oligosaccharides and polysaccharides issued from fermentation or from the biomass were screened toward their affinity to LecB. Next, the five best ligands (Lewisa, Lewisb, Lewisx, siayl-Lewisx and 3-fucosyllactose) were derivatized with a propargyl aglycon allowing the synthesis of 25 trivalent, 25 tetravalent and 5 monovalent constructions thanks to copper catalyzed azide alkyne cycloaddition. The 55 clusters were immobilized by DNA Directed immobilization leading to the fabrication of a glycocluster microarray. Their binding to LecB was studied. Multivalency improved the binding to LecB. The binding structure relationship of the clusters is mainly influenced by the carbohydrate residues. Molecular simulations indicated that the simultaneous contact of both binding sites of monomer A and D seems to be energetically possible.Lire moins >
Lire la suite >The Gram negative bacterium Pseudomonas aeruginosa (PA) is an opportunistic bacterium that causes severe and chronic infection of immune-depressed patients. It has the ability to form a biofilm that gives a selective advantage to the bacteria with respect to antibiotherapy and host defenses. Herein, we have focused on the tetrameric soluble lectin which is involved in bacterium adherence to host cells, biofilm formation, and cytotoxicity. It binds to l-fucose, d-mannose and glycan exposing terminal fucose or mannose. Using a competitive assay on microarray, 156 oligosaccharides and polysaccharides issued from fermentation or from the biomass were screened toward their affinity to LecB. Next, the five best ligands (Lewisa, Lewisb, Lewisx, siayl-Lewisx and 3-fucosyllactose) were derivatized with a propargyl aglycon allowing the synthesis of 25 trivalent, 25 tetravalent and 5 monovalent constructions thanks to copper catalyzed azide alkyne cycloaddition. The 55 clusters were immobilized by DNA Directed immobilization leading to the fabrication of a glycocluster microarray. Their binding to LecB was studied. Multivalency improved the binding to LecB. The binding structure relationship of the clusters is mainly influenced by the carbohydrate residues. Molecular simulations indicated that the simultaneous contact of both binding sites of monomer A and D seems to be energetically possible.Lire moins >
Langue :
Anglais
Audience :
Internationale
Vulgarisation :
Non
Établissement(s) :
CNRS
Université de Lille
Université de Lille
Équipe(s) de recherche :
Diversité structurale des héparanes sulfates et régulation de la réponse inflammatoire
Date de dépôt :
2020-02-12T15:45:35Z
2021-07-13T08:19:38Z
2021-07-13T08:19:38Z
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