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Baccile N, Derj A, Boissière C, Humblot V, Deniset-Besseau A. Homogeneous supported monolayer from microbial glycolipid biosurfactant. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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2
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Wu B, Ndugire W, Chen X, Yan M. Maltoheptaose-Presenting Nanoscale Glycoliposomes for the Delivery of Rifampicin to E. coli. ACS APPLIED NANO MATERIALS 2021; 4:7343-7357. [PMID: 34746649 PMCID: PMC8570549 DOI: 10.1021/acsanm.1c01320] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Liposomes, a nanoscale drug delivery system, are well known for their ability to improve pharmacokinetics and reduce drug toxicity. In this work, maltoheptaose (G7)-presenting glycoliposomes were synthesized and evaluated in the delivery of the antibiotic rifampicin. Two types of liposomes were prepared: nonfluid liposomes from l-α-phosphatidylcholine (PC) and cholesterol, and fluid liposomes from 1,2-dipalmitoyl-sn-glycero-3-phosphocholine and 1,2-dimyristoyl-sn-glycero-3-phospho-(1'-rac-glycerol). G7-derivatized glycolipid, G7-DPPE (DPPE: 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine), was incorporated into the liposomes at 21 and 14 μmol/mg to form nanoparticles of 75 ± 12 and 146 ± 14 nm for the nonfluid and fluid G7-glycoliposomes, respectively. The multivalent G7-glycoliposomes were characterized by lectin binding with concanavalin A (Con A). The dissociation constant K d between Con A and the nonfluid or fluid G7-glycoliposomes was 0.93 or 0.51 μM, which represented ~900- or 1600-fold stronger affinity than the binding between Con A and G7. The G7-glycoliposomes were loaded with rifampicin at 6.6 and 16 wt % encapsulation for the nonfluid and fluid G7-glycoliposomes, respectively. Introducing a carbohydrate in the liposomes slowed down the release of rifampicin, with the G7-glycoliposomes having the slowest release rate and the lowest permeability coefficient among the liposome formulations. The fluid G7-glycoliposomes lowered the minimal inhibitory concentration (MIC) of rifampicin against E. coli ORN208 by about 3 times, whereas liposomes without G7 or Man (d-mannose)-glycoliposomes showed no improvement in MIC. The rifampicin-loaded fluid G7-glycoliposomes demonstrated the best sustained antibacterial activity against E. coli, with up to 2 log reduction in the colony forming units at 4 × MIC after 24 h. Fluorescence resonance energy transfer and confocal fluorescence microscopy revealed stronger interactions of the bacterium with the fluid G7-glycoliposomes than other liposome formulations.
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Affiliation(s)
- Bin Wu
- Department of Chemistry, The University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - William Ndugire
- Department of Chemistry, The University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Xuan Chen
- Department of Chemistry, The University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Mingdi Yan
- Department of Chemistry, The University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
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3
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Das R, Mukhopadhyay B. A brief insight to the role of glyconanotechnology in modern day diagnostics and therapeutics. Carbohydr Res 2021; 507:108394. [PMID: 34265516 DOI: 10.1016/j.carres.2021.108394] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/28/2021] [Accepted: 06/30/2021] [Indexed: 12/17/2022]
Abstract
Carbohydrate-protein and carbohydrate-carbohydrate interactions are very important for various biological processes. Although the magnitude of these interactions is low compared to that of protein-protein interaction, the magnitude can be boosted by multivalent approach known as glycocluster effect. Nanoparticle platform is one of the best ways to present diverse glycoforms in multivalent manner and thus, the field of glyconanotechnology has emerged as an important field of research considering their potential applications in diagnostics and therapeutics. Considerable advances in the field have been achieved through development of novel techniques, use of diverse metallic and non-metallic cores for better efficacy and application of ever-increasing number of carbohydrate ligands for site-specific interaction. The present review encompasses the recent developments in the area of glyconanotechnology and their future promise as diagnostic and therapeutic tools.
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Affiliation(s)
- Rituparna Das
- Sweet Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, 741246, India.
| | - Balaram Mukhopadhyay
- Sweet Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, Nadia, 741246, India.
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4
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Liyanage SH, Yan M. Quantification of binding affinity of glyconanomaterials with lectins. Chem Commun (Camb) 2020; 56:13491-13505. [PMID: 33057503 PMCID: PMC7644678 DOI: 10.1039/d0cc05899h] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Carbohydrate-mediated interactions are involved in many cellular activities including immune responses and infections. These interactions are relatively weak, and as such, cells employ multivalency, i.e., the presentation of multiple monovalent carbohydrate ligands within a close proximity, for cooperative binding thus drastically enhanced binding affinity. In the past two decades, the field of glyconanomaterials has emerged where nanomaterials are used as multivalent scaffolds to present multiple copies of carbohydrate ligands on the nanomaterial surface. At the core of glyconanomaterial research is the ability to control and modulate multivalency through ligand display. For the quantitative evaluation of multivalency, the binding affinity must be determined. Quantification of the binding parameters provides insights for not only the fundamental glyconanomaterial-lectin interactions, but also the rational design of effective diagnostics and therapeutics. Several methods have been developed to determine the binding affinity of glyconanomaterials with lectins, including fluorescence competitive assays in solution or on microarrays, Förster resonance energy transfer, fluorescence quenching, isothermal titration calorimetry, surface plasmon resonance spectroscopy, quartz crystal microbalance and dynamic light scattering. This Feature Article discusses each of these techniques, as well as how each technique is applied to determine the binding affinity of glyconanomaterials with lectins, and the data analysis. Although the results differed depending on the specific method used, collectively, they showed that nanomaterials as multivalent scaffolds could amplify the binding affinity of carbohydrate-lectin interactions by several orders of magnitude, the extent of which depending on the structure of the carbohydrate ligand, the ligand density, the linker length and the particle size.
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Affiliation(s)
- Sajani H Liyanage
- Department of Chemistry, University of Massachusetts Lowell, 1 University Ave., Lowell, Massachusetts 01854, USA.
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5
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Abellán-Flos M, Timmer BJJ, Altun S, Aastrup T, Vincent SP, Ramström O. QCM sensing of multivalent interactions between lectins and well-defined glycosylated nanoplatforms. Biosens Bioelectron 2019; 139:111328. [PMID: 31136921 DOI: 10.1016/j.bios.2019.111328] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/29/2019] [Accepted: 05/14/2019] [Indexed: 12/29/2022]
Abstract
Quartz crystal microbalance (QCM) methodology has been adopted to unravel important factors contributing to the "cluster glycoside effect" observed in carbohydrate-lectin interactions. Well-defined, glycosylated nanostructures of precise sizes, geometries and functionalization patterns were designed and synthesized, and applied to analysis of the interaction kinetics and thermodynamics with immobilized lectins. The nanostructures were based on Borromean rings, dodecaamine cages, and fullerenes, each of which carrying a defined number of carbohydrate ligands at precise locations. The synthesis of the Borromeates and dodecaamine cages was easily adjustable due to the modular assembly of the structures, resulting in variations in presentation mode. The binding properties of the glycosylated nanoplatforms were evaluated using flow-through QCM technology, as well as hemagglutination inhibition assays, and compared with dodecaglycosylated fullerenes and a monovalent reference. With the QCM setup, the association and dissociation rate constants and the associated equilibrium constants of the interactions could be estimated, and the results used to delineate the multivalency effects of the lectin-nanostructure interactions.
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Affiliation(s)
- Marta Abellán-Flos
- University of Namur, Départment de Chimie, Laboratoire de Chimie Bio-Organique, rue de Bruxelles 61, B-5000, Namur, Belgium
| | - Brian J J Timmer
- KTH - Royal Institute of Technology, Department of Chemistry, Teknikringen 36, S-100 44, Stockholm, Sweden
| | - Samuel Altun
- Attana AB, Björnnäsvägen 21, SE-114, 19 Stockholm, Sweden
| | - Teodor Aastrup
- Attana AB, Björnnäsvägen 21, SE-114, 19 Stockholm, Sweden.
| | - Stéphane P Vincent
- University of Namur, Départment de Chimie, Laboratoire de Chimie Bio-Organique, rue de Bruxelles 61, B-5000, Namur, Belgium.
| | - Olof Ramström
- KTH - Royal Institute of Technology, Department of Chemistry, Teknikringen 36, S-100 44, Stockholm, Sweden; University of Massachusetts Lowell, Department of Chemistry, One University Ave., Lowell, MA, 01854, USA; Linnaeus University, Department of Chemical and Biomedical Sciences, SE-39182, Kalmar, Sweden.
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6
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Behren S, Westerlind U. Glycopeptides and -Mimetics to Detect, Monitor and Inhibit Bacterial and Viral Infections: Recent Advances and Perspectives. Molecules 2019; 24:E1004. [PMID: 30871155 PMCID: PMC6471658 DOI: 10.3390/molecules24061004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/06/2019] [Accepted: 03/07/2019] [Indexed: 11/17/2022] Open
Abstract
The initial contact of pathogens with host cells is usually mediated by their adhesion to glycan structures present on the cell surface in order to enable infection. Furthermore, glycans play important roles in the modulation of the host immune responses to infection. Understanding the carbohydrate-pathogen interactions are of importance for the development of novel and efficient strategies to either prevent, or interfere with pathogenic infection. Synthetic glycopeptides and mimetics thereof are capable of imitating the multivalent display of carbohydrates at the cell surface, which have become an important objective of research over the last decade. Glycopeptide based constructs may function as vaccines or anti-adhesive agents that interfere with the ability of pathogens to adhere to the host cell glycans and thus possess the potential to improve or replace treatments that suffer from resistance. Additionally, synthetic glycopeptides are used as tools for epitope mapping of antibodies directed against structures present on various pathogens and have become important to improve serodiagnostic methods and to develop novel epitope-based vaccines. This review will provide an overview of the most recent advances in the synthesis and application of glycopeptides and glycopeptide mimetics exhibiting a peptide-like backbone in glycobiology.
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Affiliation(s)
- Sandra Behren
- Department of Chemistry, Umeå University, 90187 Umeå, Sweden.
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7
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Yan X, La Padula V, Favre-Bonte S, Bernard J. Heptyl mannose decorated glyconanoparticles with tunable morphologies through polymerization induced self-assembly. Synthesis, functionalization and interactions with type 1 piliated E. coli. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2018.12.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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Xie S, Manuguri S, Ramström O, Yan M. Impact of Hydrogen Bonding on the Fluorescence of N-Amidinated Fluoroquinolones. Chem Asian J 2019; 14:910-916. [PMID: 30762939 DOI: 10.1002/asia.201801916] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/13/2019] [Indexed: 12/27/2022]
Abstract
The fluorescence properties of AIE-active N-amidinated fluoroquinolones, efficiently obtained by a perfluoroaryl azide-aldehyde-amine reaction, have been studied. The fluorophores were discovered to elicit a highly sensitive fluorescence quenching response towards guest molecules with hydrogen-bond-donating ability. This effect was evaluated in a range of protic/aprotic solvents with different H-bonding capabilities, and also in aqueous media. The influence of acid/base was furthermore addressed. The hydrogen-bonding interactions were studied by IR, NMR, UV/Vis and time-resolved fluorescence decay, revealing their roles in quenching of the fluorescence emission. Due to the pronounced quenching property of water, the N-amidinated fluoroquinolones could be utilized as fluorescent probes for quantifying trace amount of water in organic solvents.
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Affiliation(s)
- Sheng Xie
- Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, 10044, Stockholm, Sweden.,College of Chemistry and Chemical Engineering, Hunan University, 410082, Changsha, China
| | - Sesha Manuguri
- Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, 10044, Stockholm, Sweden
| | - Olof Ramström
- Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, 10044, Stockholm, Sweden.,Department of Chemistry, University of Massachusetts Lowell, 1 University Ave., Lowell, MA, 01854, USA.,Department of Chemistry and Biomedical Sciences, Linnaeus University, 39182, Kalmar, Sweden
| | - Mingdi Yan
- Department of Chemistry, KTH-Royal Institute of Technology, Teknikringen 30, 10044, Stockholm, Sweden.,Department of Chemistry, University of Massachusetts Lowell, 1 University Ave., Lowell, MA, 01854, USA
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9
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Xiao F, Cao B, Wang C, Guo X, Li M, Xing D, Hu X. Pathogen-Specific Polymeric Antimicrobials with Significant Membrane Disruption and Enhanced Photodynamic Damage To Inhibit Highly Opportunistic Bacteria. ACS NANO 2019; 13:1511-1525. [PMID: 30632740 DOI: 10.1021/acsnano.8b07251] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Highly pathogenic Gram-negative bacteria and their drug resistance are a severe public health threat with high mortality. Gram-negative bacteria are hard to kill due to the complex cell envelopes with low permeability and extra defense mechanisms. It is challenging to treat them with current strategies, mainly including antibiotics, peptides, polymers, and some hybrid materials, which still face the issue of drug resistance, limited antibacterial selectivity, and severe side effects. Together with precise bacteria targeting, synergistic therapeutic modalities, including physical membrane damage and photodynamic eradication, are promising to combat Gram-negative bacteria. Herein, pathogen-specific polymeric antimicrobials were formulated from amphiphilic block copolymers, poly(butyl methacrylate)- b-poly(2-(dimethylamino) ethyl methacrylate- co-eosin)- b-ubiquicidin, PBMA- b-P(DMAEMA- co-EoS)-UBI, in which pathogen-targeting peptide ubiquicidin (UBI) was tethered in the hydrophilic chain terminal, and Eosin-Y was copolymerized in the hydrophilic block. The micelles could selectively adhere to bacteria instead of mammalian cells, inserting into the bacteria membrane to induce physical membrane damage and out-diffusion of intracellular milieu. Furthermore, significant in situ generation of reactive oxygen species was observed upon light irradiation, achieving further photodynamic eradication. Broad-spectrum bacterial inhibition was demonstrated for the polymeric antimicrobials, especially highly opportunistic Gram-negative bacteria, such as Pseudomona aeruginosa ( P. aeruginosa) based on the synergy of physical destruction and photodynamic therapy, without detectable resistance. In vivo P. aeruginosa-infected knife injury model and burn model both proved good potency of bacteria eradication and promoted wound healing, which was comparable with commercial antibiotics, yet no risk of drug resistance. It is promising to hurdle the infection and resistance suffered from highly opportunistic bacteria.
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Affiliation(s)
- Fengfeng Xiao
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Bing Cao
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Congyu Wang
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Xujuan Guo
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Mengge Li
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Da Xing
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
| | - Xianglong Hu
- MOE Key Laboratory of Laser Life Science and Institute of Laser Life Science , South China Normal University , Guangzhou 510631 , China
- College of Biophotonics , South China Normal University , Guangzhou 510631 , China
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10
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Xie S, Zhou J, Chen X, Kong N, Fan Y, Zhang Y, Hammer G, Castner DG, Ramström O, Yan M. A Versatile Catalyst-Free Perfluoroaryl Azide-Aldehyde-Amine Conjugation Reaction. MATERIALS CHEMISTRY FRONTIERS 2019; 3:251-256. [PMID: 31543961 PMCID: PMC6754110 DOI: 10.1039/c8qm00516h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A tri-component reaction, involving an electrophilically-activated perfluoroaryl azide, an enolizable aldehyde and an amine, reacts readily at room temperature without any catalysts in solvents including aqueous conditions to yield a stable amidine conjugate. The versatility of this reaction is demonstrated in the conjugation of an amino acid without prior protection of the carboxyl group, and in the synthesize antibiotic-nanoparticle conjugates.
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Affiliation(s)
- Sheng Xie
- Department of Chemistry, KTH-Royal Institute of Technology, Stockholm, Sweden
- College of Chemistry and Chemical Engineering, Hunan University, Changsha, P. R. China
| | - Juan Zhou
- Department of Chemistry, KTH-Royal Institute of Technology, Stockholm, Sweden
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, China
| | - Xuan Chen
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 01854, USA. E-mail: ,
| | - Na Kong
- Department of Chemistry, KTH-Royal Institute of Technology, Stockholm, Sweden
| | - Yanmiao Fan
- Department of Chemistry, KTH-Royal Institute of Technology, Stockholm, Sweden
| | - Yang Zhang
- Department of Chemistry, KTH-Royal Institute of Technology, Stockholm, Sweden
| | - Gerry Hammer
- Departments of Bioengineering and Chemical Engineering, National ESCA and Surface Analysis Center for Biomedical Problems, University of Washington, Seattle, Washington, USA
| | - David G Castner
- Departments of Bioengineering and Chemical Engineering, National ESCA and Surface Analysis Center for Biomedical Problems, University of Washington, Seattle, Washington, USA
| | - Olof Ramström
- Department of Chemistry, KTH-Royal Institute of Technology, Stockholm, Sweden
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 01854, USA. E-mail: ,
- Department of Chemistry and Biomedical Sciences, Linnaeus University, SE-39182 Kalmar, Sweden
| | - Mingdi Yan
- Department of Chemistry, KTH-Royal Institute of Technology, Stockholm, Sweden
- Department of Chemistry, University of Massachusetts Lowell, Lowell, MA 01854, USA. E-mail: ,
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11
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Timmer BJJ, Flos MA, Jørgensen LM, Proverbio D, Altun S, Ramström O, Aastrup T, Vincent SP. Spatially well-defined carbohydrate nanoplatforms: synthesis, characterization and lectin interaction study. Chem Commun (Camb) 2018; 52:12326-12329. [PMID: 27711353 DOI: 10.1039/c6cc06737a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Two novel dodecasubstituted carbohydrate nanoplatforms based on molecular Borromean rings and dodecaamine cages have been prepared for use in evaluating the importance of the spatial distribution of carbohydrates in their interaction with lectins. The binding affinities of the glyconanoplatforms were characterized using quartz crystal microbalance technology and compared with a monovalent reference and dodecaglycosylated fullerenes.
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Affiliation(s)
- B J J Timmer
- KTH - Royal Institute of Technology, Department of Chemistry, Organic Chemistry, Teknikringen 36, S-100 44 Stockholm, Sweden.
| | - M Abellán Flos
- University of Namur, Départment de Chimie, Laboratoire de Chimie Bio-Organique, Rue de Bruxelles 61, B-5000 Namur, Belgium.
| | | | - D Proverbio
- Attana AB, Björnnäsvägen 21, SE-114 19 Stockholm, Sweden.
| | - S Altun
- Attana AB, Björnnäsvägen 21, SE-114 19 Stockholm, Sweden.
| | - O Ramström
- KTH - Royal Institute of Technology, Department of Chemistry, Organic Chemistry, Teknikringen 36, S-100 44 Stockholm, Sweden.
| | - T Aastrup
- Attana AB, Björnnäsvägen 21, SE-114 19 Stockholm, Sweden.
| | - S P Vincent
- University of Namur, Départment de Chimie, Laboratoire de Chimie Bio-Organique, Rue de Bruxelles 61, B-5000 Namur, Belgium.
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Abstract
A shocking state of affairs; the use of nanoparticles as simple carriers is dead and outdated. Stimuli-responsive nanoparticles have emerged as active participants in the therapeutic landscape, rather than inert molecule carriers. And this time they are here to join the ongoing war against an old enemy: bacteria.
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Affiliation(s)
- Carina I. C. Crucho
- CQFM, Centro de Química-Física
Molecular, and IN, Institute of Nanoscience and Nanotechnology, Instituto Superior Técnico, Universidade de Lisboa, Lisboa 1049-001, Portugal
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13
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Antibacterial properties of sophorolipid-modified gold surfaces against Gram positive and Gram negative pathogens. Colloids Surf B Biointerfaces 2017; 157:325-334. [PMID: 28609707 DOI: 10.1016/j.colsurfb.2017.05.072] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 04/21/2017] [Accepted: 05/29/2017] [Indexed: 11/23/2022]
Abstract
Sophorolipids are bioderived glycolipids displaying interesting antimicrobial properties. We show that they can be used to develop biocidal monolayers against Listeria ivanovii, a Gram-positive bacterium. The present work points out the dependence between the surface density and the antibacterial activity of grafted sophorolipids. It also emphasizes the broad spectrum of activity of these coatings, demonstrating their potential against both Gram-positive strains (Enteroccocus faecalis, Staphylococcus epidermidis, Streptococcus pyogenes) and Gram-negative strains (Escherichia coli, Pseudomonas aeruginosa and Salmonella typhymurium). After exposure to sophorolipids grafted onto gold, all these bacterial strains show a significant reduction in viability resulting from membrane damage as evidenced by fluorescent labelling and SEM-FEG analysis.
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14
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Kong N, Xie S, Zhou J, Menéndez M, Solís D, Park J, Proietti G, Ramström O, Yan M. Catalyst-Free Cycloaddition Reaction for the Synthesis of Glyconanoparticles. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28136-28142. [PMID: 27649792 DOI: 10.1021/acsami.6b07471] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new conjugation method for the immobilization of carbohydrates on nanomaterials was demonstrated simply by mixing perfluorophenyl azide-functionalized silica nanoparticles (SNPs), an amine-derivatized carbohydrate, and phenylacetaldehyde under ambient conditions without any catalyst. The density of carbohydrates on the glyconanoparticles was determined using the quantitative 19F NMR (19F qNMR) technique; for example, the density of d-mannose (Man) on Man-SNPs was 2.5 ± 0.2 × 10-16 nmol/nm2. The glyconanoparticles retained their binding affinity and selectivity toward cognate lectins. The apparent dissociation constant of the glyconanoparticles was measured by a fluorescence competition assay, where the binding affinity of Man-SNPs was almost 4 orders of magnitude higher than that of Man with concanavalin A. Moreover, even with a ligand density of 2.6 times lower than Man-SNPs synthesized by the copper-catalyzed azide-alkyne cycloaddition, the binding affinity of Man-SNPs prepared by the current method was more than 4 times higher.
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Affiliation(s)
- Na Kong
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Sheng Xie
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Juan Zhou
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Margarita Menéndez
- Instituto de Química Física Rocasolano , Consejo Superior de Investigaciones Científicas, and Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), ISCIII, Madrid, Spain
| | - Dolores Solís
- Instituto de Química Física Rocasolano , Consejo Superior de Investigaciones Científicas, and Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), ISCIII, Madrid, Spain
| | - JaeHyeung Park
- Department of Chemistry, University of Massachusetts Lowell , 1 University Avenue, Lowell, Massachusetts 01854, United States
| | - Giampiero Proietti
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Olof Ramström
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Mingdi Yan
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
- Department of Chemistry, University of Massachusetts Lowell , 1 University Avenue, Lowell, Massachusetts 01854, United States
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15
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Schäffer C, Messner P. Emerging facets of prokaryotic glycosylation. FEMS Microbiol Rev 2016; 41:49-91. [PMID: 27566466 DOI: 10.1093/femsre/fuw036] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 02/17/2016] [Accepted: 08/01/2016] [Indexed: 12/16/2022] Open
Abstract
Glycosylation of proteins is one of the most prevalent post-translational modifications occurring in nature, with a wide repertoire of biological implications. Pathways for the main types of this modification, the N- and O-glycosylation, can be found in all three domains of life-the Eukarya, Bacteria and Archaea-thereby following common principles, which are valid also for lipopolysaccharides, lipooligosaccharides and glycopolymers. Thus, studies on any glycoconjugate can unravel novel facets of the still incompletely understood fundamentals of protein N- and O-glycosylation. While it is estimated that more than two-thirds of all eukaryotic proteins would be glycosylated, no such estimate is available for prokaryotic glycoproteins, whose understanding is lagging behind, mainly due to the enormous variability of their glycan structures and variations in the underlying glycosylation processes. Combining glycan structural information with bioinformatic, genetic, biochemical and enzymatic data has opened up an avenue for in-depth analyses of glycosylation processes as a basis for glycoengineering endeavours. Here, the common themes of glycosylation are conceptualised for the major classes of prokaryotic (i.e. bacterial and archaeal) glycoconjugates, with a special focus on glycosylated cell-surface proteins. We describe the current knowledge of biosynthesis and importance of these glycoconjugates in selected pathogenic and beneficial microbes.
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Affiliation(s)
- Christina Schäffer
- Department of NanoBiotechnology, Institute of Biologically Inspired Materials, NanoGlycobiology unit, Universität für Bodenkultur Wien, A-1180 Vienna, Austria
| | - Paul Messner
- Department of NanoBiotechnology, Institute of Biologically Inspired Materials, NanoGlycobiology unit, Universität für Bodenkultur Wien, A-1180 Vienna, Austria
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16
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Eissa AM, Abdulkarim A, Sharples GJ, Cameron NR. Glycosylated Nanoparticles as Efficient Antimicrobial Delivery Agents. Biomacromolecules 2016; 17:2672-9. [DOI: 10.1021/acs.biomac.6b00711] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ahmed M. Eissa
- Department
of Chemistry, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
- School
of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Department
of Materials Science and Engineering, Monash University, Clayton 3800, Victoria Australia
- Department
of Polymers, Chemical Industries Research Division, National Research Centre (NRC), El-Bohoos Street, Dokki, Cairo Egypt
| | - Ali Abdulkarim
- Department
of Chemistry, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
| | - Gary J. Sharples
- School
of Biological and Biomedical Sciences, Biophysical Sciences Institute,
Department of Chemistry, University of Durham, Durham DH1 3LE, United Kingdom
| | - Neil R. Cameron
- Department
of Chemistry, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
- School
of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
- Department
of Materials Science and Engineering, Monash University, Clayton 3800, Victoria Australia
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17
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Bai H, Lv F, Liu L, Wang S. Supramolecular Antibiotic Switches: A Potential Strategy for Combating Drug Resistance. Chemistry 2016; 22:11114-21. [DOI: 10.1002/chem.201600877] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Haotian Bai
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Libing Liu
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Organic Solids; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
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