51
|
Fessele C, Lindhorst TK. Effect of Aminophenyl and Aminothiahexyl α-D-Glycosides of the Manno-, Gluco-, and Galacto-Series on Type 1 Fimbriae-Mediated Adhesion of Escherichia coli. BIOLOGY 2013; 2:1135-49. [PMID: 24833058 PMCID: PMC3960877 DOI: 10.3390/biology2031135] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 08/17/2013] [Accepted: 08/28/2013] [Indexed: 12/21/2022]
Abstract
Adhesion of bacteria to the glycosylated surface of their target cells is typically mediated by fimbrial lectins, exposed on the bacterial surface. Among the best-investigated and most important fimbriae are type 1 fimbriae, for which α-d-mannopyranoside-specificity has been described. This carbohydrate specificity is mediated by the type 1 fimbrial lectin FimH. In this account, we have employed four different set-ups to assay type 1 fimbriae-mediated bacterial adhesion, including tailor-made glycoarrays. The focus of our study was on testing FimH specificity with regard to the glycone part of a glycosidic ligand by testing a series of synthetic α-mannosides, as well as α-glucosides and α-galactosides. Unexpectedly, it was found that in solution all tested aminothiahexyl glycosides inhibit bacterial adhesion but that this effect is unspecific. Instead it is due to cytotoxicity of the respective glycosides at high mm concentrations.
Collapse
Affiliation(s)
- Claudia Fessele
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3-4, 24098 Kiel, Germany.
| | - Thisbe K Lindhorst
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3-4, 24098 Kiel, Germany.
| |
Collapse
|
52
|
Xiao S, Abu-Esba L, Turkyilmaz S, White AG, Smith BD. Multivalent dendritic molecules as broad spectrum bacteria agglutination agents. Theranostics 2013; 3:658-66. [PMID: 24052806 PMCID: PMC3776217 DOI: 10.7150/thno.6811] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 06/26/2013] [Indexed: 01/29/2023] Open
Abstract
This study reports the first set of synthetic molecules that act as broad spectrum agglutination agents and thus are complementary to the specific targeting of antibodies. The molecules have dendritic architecture and contain multiple copies of zinc(II)-dipicolylamine (ZnDPA) units that have selective affinity for the bacterial cell envelope. A series of molecular structures were evaluated, with the number of appended ZnDPA units ranging from four to thirty-two. Agglutination assays showed that the multivalent probes rapidly cross-linked ten different strains of bacteria, regardless of Gram-type and cell morphology. Fluorescence microscopy studies using probes with four ZnDPA units indicated a high selectivity for bacteria agglutination in the presence of mammalian cells and no measurable effect on the health of the cells. The high bacterial selectivity was confirmed by conducting in vivo optical imaging studies of a mouse leg infection model. The results suggest that multivalent ZnDPA molecular probes with dendritic structures have great promise as selective, broad spectrum bacterial agglutination agents for infection imaging and theranostic applications.
Collapse
Affiliation(s)
| | | | | | | | - Bradley D. Smith
- Department of Chemistry and Biochemistry, 236 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, USA
| |
Collapse
|
53
|
Kouki A, Pieters RJ, Nilsson UJ, Loimaranta V, Finne J, Haataja S. Bacterial Adhesion of Streptococcus suis to Host Cells and Its Inhibition by Carbohydrate Ligands. BIOLOGY 2013; 2:918-35. [PMID: 24833053 PMCID: PMC3960878 DOI: 10.3390/biology2030918] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 05/22/2013] [Accepted: 05/22/2013] [Indexed: 11/16/2022]
Abstract
Streptococcus suis is a Gram-positive bacterium, which causes sepsis and meningitis in pigs and humans. This review examines the role of known S. suis virulence factors in adhesion and S. suis carbohydrate-based adhesion mechanisms, as well as the inhibition of S. suis adhesion by anti-adhesion compounds in in vitro assays. Carbohydrate-binding specificities of S. suis have been identified, and these studies have shown that many strains recognize Galα1-4Gal-containing oligosaccharides present in host glycolipids. In the era of increasing antibiotic resistance, new means to treat infections are needed. Since microbial adhesion to carbohydrates is important to establish disease, compounds blocking adhesion could be an alternative to antibiotics. The use of oligosaccharides as drugs is generally hampered by their relatively low affinity (micromolar) to compete with multivalent binding to host receptors. However, screening of a library of chemically modified Galα1-4Gal derivatives has identified compounds that inhibit S. suis adhesion in nanomolar range. Also, design of multivalent Galα1-4Gal-containing dendrimers has resulted in a significant increase of the inhibitory potency of the disaccharide. The S. suis adhesin binding to Galα1-4Gal-oligosaccharides, Streptococcal adhesin P (SadP), was recently identified. It has a Galα1-4Gal-binding N-terminal domain and a C-terminal LPNTG-motif for cell wall anchoring. The carbohydrate-binding domain has no homology to E. coli P fimbrial adhesin, which suggests that these Gram-positive and Gram-negative bacterial adhesins recognizing the same receptor have evolved by convergent evolution. SadP adhesin may represent a promising target for the design of anti-adhesion ligands for the prevention and treatment of S. suis infections.
Collapse
Affiliation(s)
- Annika Kouki
- Department of Medical Biochemistry and Genetics, University of Turku, Kiinamyllynkatu 10, Turku FI-20520, Finland.
| | - Roland J Pieters
- Department of Medicinal Chemistry and Chemical Biology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, P.O. Box 80082, Utrecht 3508 TB, The Netherlands.
| | - Ulf J Nilsson
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, POB 124, Lund SE-22100, Sweden.
| | - Vuokko Loimaranta
- Department of Medical Biochemistry and Genetics, University of Turku, Kiinamyllynkatu 10, Turku FI-20520, Finland.
| | - Jukka Finne
- Department of Biosciences, Division of Biochemistry and Biotechnology, University of Helsinki, P.O.B. 56, Helsinki FI-00014, Finland.
| | - Sauli Haataja
- Department of Medical Biochemistry and Genetics, University of Turku, Kiinamyllynkatu 10, Turku FI-20520, Finland.
| |
Collapse
|
54
|
Cozens D, Read RC. Anti-adhesion methods as novel therapeutics for bacterial infections. Expert Rev Anti Infect Ther 2013; 10:1457-68. [PMID: 23253323 DOI: 10.1586/eri.12.145] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Anti-adhesion therapies for bacterial infections offer an alternative to antibiotics, with those therapies bacteria are not killed but are prevented from causing harm to a host by inhibiting adherence to host cells and tissues, a prerequisite for the majority of infectious diseases. The mechanisms of these potential therapeutic agents include inhibition of adhesins and their host receptors, vaccination with adhesins or analogs, use of probiotics and dietary supplements that interfere with receptor-adhesin interactions, subminimal inhibitory concentrations of antibiotics and manipulation of hydrophobic interactions. Once developed, these drugs will contribute to the arsenal for fighting infectious disease in the future, potentially subverting antibiotic resistance.
Collapse
Affiliation(s)
- Daniel Cozens
- Department of Infection & Immunity, K Floor, Royal Hallamshire Hospital, Sheffield School of Medicine & Biomedical Science, University of Sheffield, Sheffield, S10 3JF, UK
| | | |
Collapse
|
55
|
Use of tetravalent galabiose for inhibition of streptococcus suis serotype 2 infection in a mouse model. BIOLOGY 2013; 2:702-18. [PMID: 24832804 PMCID: PMC3960886 DOI: 10.3390/biology2020702] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 03/26/2013] [Accepted: 03/28/2013] [Indexed: 11/24/2022]
Abstract
Streptococcus suis is an important swine pathogen associated with a variety of infections such as meningitis, arthritis and septicemia. The bacterium is zoonotic and has been found to cause meningitis especially in humans occupationally exposed to infected pigs. Since adhesion is a prerequisite for colonization and subsequent infection, anti-adhesion treatment seems a natural alternative to traditional treatment with antibiotics. In order to optimize the inhibitory potency a multivalency approach was taken in the inhibitor design. A synthetic tetravalent galabiose compound was chosen which had previously shown promising anti-adhesion effects with S. suis in vitro. The aim of this study was to evaluate the in vivo effects of the compound using an infection peritonitis mouse model. As such S. suis serotype 2 infection and treatment were tested in vivo and the effects were compared to the effect of treatment with penicillin.
Collapse
|
56
|
Schitter G, Wrodnigg TM. Update on carbohydrate-containing antibacterial agents. Expert Opin Drug Discov 2013; 4:315-56. [PMID: 23489128 DOI: 10.1517/17460440902778725] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Since the first known use of antibiotics > 2,500 years ago, a research field with immense importance for the welfare of mankind has been developed. After a decrease in interest in this topic by the end of the 20th century the occurrence of (poly-)resistant strains of bacteria induced a revival of antibiotics research. Health systems have been seeking viable and reliable solutions to this dangerous and expansive threat. OBJECTIVE This review will focus on carbohydrate-containing antibiotics and will give an outline of recently published novel isolated, semisynthetic as well as synthetic structures, their mechanism of action, if known, and the strategies for the design of compounds with potential by improved antibacterial properties. METHODS The literature between 2000 and 2008 was screened with main focus on recent examples of novel structures and strategies for the lead finding of exclusively antibacterial agents. RESULTS/CONCLUSION With the explanation of the role of the carbohydrate moieties in the respective antibacterial agents together with better synthetic strategies in carbohydrate chemistry as well as improvements in assay development for high throughput screening methods, carbohydrate-containing antibiotics can be used for the finding of potential drug leads that contribute to the fight against infections and diseases caused by (resistant) bacterial pathogens.
Collapse
Affiliation(s)
- Georg Schitter
- Technical University Graz, Institute of Organic Chemistry, Univ.-Doz. TMW, Dip.-Ing. GS, Glycogroup, A-8010 Graz, Austria +43 316 873 8744 ; +43 316 873 8740 ;
| | | |
Collapse
|
57
|
Pertici F, Varga N, van Duijn A, Rey-Carrizo M, Bernardi A, Pieters RJ. Efficient synthesis of phenylene-ethynylene rods and their use as rigid spacers in divalent inhibitors. Beilstein J Org Chem 2013; 9:215-22. [PMID: 23400701 PMCID: PMC3566787 DOI: 10.3762/bjoc.9.25] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 01/09/2013] [Indexed: 01/27/2023] Open
Abstract
The synthesis of phenylene-ethynylene rods and their use as rigid spacers is described. Alternation of a Sonogashira reaction and silyl group cleavage was used to obtain rigid spacers with even and odd numbers of phenylene units. Preliminary applications of these rods in divalent systems are shown. Inhibition studies with Pseudomonas Aeruginosa lectin LecA showed that the rigid spacer proved greatly beneficial for the inhibitory potency.
Collapse
Affiliation(s)
- Francesca Pertici
- Department of Medicinal Chemistry and Chemical Biology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
| | | | | | | | | | | |
Collapse
|
58
|
Yosief HO, Weiss PAA, S.Iyer PS. Capture of uropathogenic E. coli by using synthetic glycan ligands specific for the pap-pilus. Chembiochem 2013; 14:251-9. [PMID: 23307594 PMCID: PMC5453672 DOI: 10.1002/cbic.201200582] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Indexed: 12/12/2022]
Abstract
Biotinylated mono- and biantennary di-/trisaccharides were synthesized to evaluate their ability to capture E. coli strains that express pilus types with different receptor specificities. The synthesized biotinylated di-/trisaccharides contain Galα(1→4)Gal, Galα(1→4)GalNHAc, GalNHAcα(1→4)Gal, Galα(1→4)Galβ(1→4)Glc and GalNHAcα(1→4)Galβ(1→4)Glc as carbohydrate epitopes. These biotinylated oligosaccharides were immobilized on streptavidin-coated magnetic beads, and incubated with different strains of live E. coli. Capturing ability was assessed by using a luciferase assay that detects bacterial ATP. The trisaccharides containing Galα(1→4)Galβ(1→4)Glc and the disaccharides containing Galα(1→4)Gal as the epitopes exhibited strong capturing ability for uropathogenic E. coli strains with the pap pilus genotype, including CFT073, J96 and J96 pilE. The same ligands failed to capture E. coli strains with fim, prs, or foc genotypes. Uropathogenic CFT073 was also captured moderately by biantennary disaccharides containing a GalNHAc moiety at the reducing end; however, other saccharides containing GalNHAc at the nonreducing end did not capture the CFT073 strain. These synthetic glycoconjugates could potentially be adapted as rapid diagnostic agents to differentiate between different E. coli pathovars.
Collapse
Affiliation(s)
- Hailemichael O. Yosief
- Department of Chemistry and Biochemistry, 301 Clifton Court, University of Cincinnati, Cincinnati, Ohio-4522
| | - Professor Alison A. Weiss
- Department of Molecular Genetics, Biochemistry and Microbiology, University of Cincinnati, Cincinnati; OH-45220
| | - Professor Suri S.Iyer
- Department of Chemistry, Center for Diagnostics and Therapeutics, 788 Petit Science Center, 100 Piedmont Avenue, Atlanta, GA-30302
| |
Collapse
|
59
|
Wang KR, Wang YQ, An HW, Zhang JC, Li XL. A Triazatruxene-Based Glycocluster as a Fluorescent Sensor for Concanavalin A. Chemistry 2013; 19:2903-9. [DOI: 10.1002/chem.201200905] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Revised: 11/02/2012] [Indexed: 01/06/2023]
|
60
|
Wang KR, An HW, Wang YQ, Zhang JC, Li XL. Multivalent glycoclusters constructed by chiral self-assembly of mannose functionalized perylene bisimide. Org Biomol Chem 2013; 11:1007-12. [DOI: 10.1039/c2ob27052h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
61
|
Synthesis of perylene bisimide-centered glycodendrimer and its interactions with concanavalin A. Bioorg Med Chem Lett 2013; 23:480-3. [DOI: 10.1016/j.bmcl.2012.11.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Revised: 11/10/2012] [Accepted: 11/13/2012] [Indexed: 11/17/2022]
|
62
|
Otten L, Richards SJ, Fullam E, Besra GS, Gibson MI. Gold nanoparticle-linked analysis of carbohydrate–protein interactions, and polymeric inhibitors, using unlabelled proteins; easy measurements using a ‘simple’ digital camera. J Mater Chem B 2013; 1:2665-2672. [DOI: 10.1039/c3tb20259c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
63
|
Almant M, Mastouri A, Gallego-Yerga L, García Fernandez JM, Ortiz Mellet C, Kovensky J, Morandat S, El Kirat K, Gouin SG. Probing the Nature of the Cluster Effect Observed with Synthetic Multivalent Galactosides and Peanut Agglutinin Lectin. Chemistry 2012; 19:729-38. [DOI: 10.1002/chem.201202319] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Indexed: 11/06/2022]
|
64
|
Lee DJ, Yang SH, Williams GM, Brimble MA. Synthesis of Multivalent Neoglyconjugates of MUC1 by the Conjugation of Carbohydrate-Centered, Triazole-Linked Glycoclusters to MUC1 Peptides Using Click Chemistry. J Org Chem 2012; 77:7564-71. [DOI: 10.1021/jo3013435] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dong Jun Lee
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| | - Sung-Hyun Yang
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| | - Geoffrey M. Williams
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| | - Margaret A. Brimble
- School of Chemical
Sciences, The University of Auckland, 23
Symonds Street, Auckland, New Zealand
| |
Collapse
|
65
|
Grabosch C, Kolbe K, Lindhorst TK. Glycoarrays by a New Tandem Noncovalent-Covalent Modification of Polystyrene Microtiter Plates and their Interrogation with Live Cells. Chembiochem 2012; 13:1874-9. [DOI: 10.1002/cbic.201200365] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Indexed: 01/11/2023]
|
66
|
Gerland B, Goudot A, Pourceau G, Meyer A, Dugas V, Cecioni S, Vidal S, Souteyrand E, Vasseur JJ, Chevolot Y, Morvan F. Synthesis of a library of fucosylated glycoclusters and determination of their binding toward Pseudomonas aeruginosa lectin B (PA-IIL) using a DNA-based carbohydrate microarray. Bioconjug Chem 2012; 23:1534-47. [PMID: 22799498 DOI: 10.1021/bc2006434] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Pseudomonas aeruginosa (PA) is a Gram negative opportunistic pathogen and is the major pathogen encounter in the cystic fibrosis (CF) lung airways. It often leads to chronic respiratory infection despite aggressive antibiotic therapy due to the emergence of resistant strains and to the formation of biofilm. The lectin PA-IIL (LecB) is a fucose-specific lectin from PA suspected to be involved in host recognition/adhesion and in biofilm formation. Thus, it can be foreseen as a potential therapeutic target. Herein, 16 fucosylated glycoclusters with antenna-like, linear, or crown-like spatial arrangements were synthesized using a combination of DNA solid-phase synthesis and alkyne azide 1,3-dipolar cycloaddition (CuAAC). Their binding properties toward PA-IIL were then evaluated based on DNA directed immobilization (DDI) carbohydrate microarray. Our results suggested that the antenna-like scaffold was preferred to linear or crown-like glycoclusters. Among the crown-like carbohydrate centered fucosylated glycoclusters, mannose-based core was better than glucose- and galactose-based ones. The influence of the linker arm was also evaluated, and long linkers between fucoses and the core led to a slight better binding than the short ones.
Collapse
Affiliation(s)
- Béatrice Gerland
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247 CNRS--Université Montpellier 1--Université Montpellier 2, Place Eugène Bataillon, CC1704, 34095 Montpellier Cedex 5, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
67
|
Cecioni S, Matthews SE, Blanchard H, Praly JP, Imberty A, Vidal S. Synthesis of lactosylated glycoclusters and inhibition studies with plant and human lectins. Carbohydr Res 2012; 356:132-41. [DOI: 10.1016/j.carres.2012.02.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Revised: 02/07/2012] [Accepted: 02/09/2012] [Indexed: 12/20/2022]
|
68
|
Richards SJ, Jones MW, Hunaban M, Haddleton DM, Gibson MI. Probing Bacterial-Toxin Inhibition with Synthetic Glycopolymers Prepared by Tandem Post-Polymerization Modification: Role of Linker Length and Carbohydrate Density. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202945] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
69
|
Richards SJ, Jones MW, Hunaban M, Haddleton DM, Gibson MI. Probing Bacterial-Toxin Inhibition with Synthetic Glycopolymers Prepared by Tandem Post-Polymerization Modification: Role of Linker Length and Carbohydrate Density. Angew Chem Int Ed Engl 2012; 51:7812-6. [DOI: 10.1002/anie.201202945] [Citation(s) in RCA: 113] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Indexed: 01/08/2023]
|
70
|
Bai Y, Liu S, Li J, Lakshminarayanan R, Sarawathi P, Tang C, Ho D, Verma C, Beuerman RW, Pervushin K. Progressive structuring of a branched antimicrobial peptide on the path to the inner membrane target. J Biol Chem 2012; 287:26606-17. [PMID: 22700968 DOI: 10.1074/jbc.m112.363259] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
In recent years, interest has grown in the antimicrobial properties of certain natural and non-natural peptides. The strategy of inserting a covalent branch point in a peptide can improve its antimicrobial properties while retaining host biocompatibility. However, little is known regarding possible structural transitions as the peptide moves on the access path to the presumed target, the inner membrane. Establishing the nature of the interactions with the complex bacterial outer and inner membranes is important for effective peptide design. Structure-activity relationships of an amphiphilic, branched antimicrobial peptide (B2088) are examined using environment-sensitive fluorescent probes, electron microscopy, molecular dynamics simulations, and high resolution NMR in solution and in condensed states. The peptide is reconstituted in bacterial outer membrane lipopolysaccharide extract as well as in a variety of lipid media mimicking the inner membrane of Gram-negative pathogens. Progressive structure accretion is observed for the peptide in water, LPS, and lipid environments. Despite inducing rapid aggregation of bacteria-derived lipopolysaccharides, the peptide remains highly mobile in the aggregated lattice. At the inner membranes, the peptide undergoes further structural compaction mediated by interactions with negatively charged lipids, probably causing redistribution of membrane lipids, which in turn results in increased membrane permeability and bacterial lysis. These findings suggest that peptides possessing both enhanced mobility in the bacterial outer membrane and spatial structure facilitating its interactions with the membrane-water interface may provide excellent structural motifs to develop new antimicrobials that can overcome antibiotic-resistant Gram-negative pathogens.
Collapse
Affiliation(s)
- Yang Bai
- Singapore Eye Research Institute, Singapore 168751
| | | | | | | | | | | | | | | | | | | |
Collapse
|
71
|
Westerlind U. Synthetic glycopeptides and glycoproteins with applications in biological research. Beilstein J Org Chem 2012; 8:804-18. [PMID: 23015828 PMCID: PMC3388868 DOI: 10.3762/bjoc.8.90] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2012] [Accepted: 05/22/2012] [Indexed: 12/21/2022] Open
Abstract
Over the past few years, synthetic methods for the preparation of complex glycopeptides have been drastically improved. The need for homogenous glycopeptides and glycoproteins with defined chemical structures to study diverse biological phenomena further enhances the development of methodologies. Selected recent advances in synthesis and applications, in which glycopeptides or glycoproteins serve as tools for biological studies, are reviewed. The importance of specific antibodies directed to the glycan part, as well as the peptide backbone has been realized during the development of synthetic glycopeptide-based anti-tumor vaccines. The fine-tuning of native chemical ligation (NCL), expressed protein ligation (EPL), and chemoenzymatic glycosylation techniques have all together enabled the synthesis of functional glycoproteins. The synthesis of structurally defined, complex glycopeptides or glyco-clusters presented on natural peptide backbones, or mimics thereof, offer further possibilities to study protein-binding events.
Collapse
Affiliation(s)
- Ulrika Westerlind
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V., ISAS - Leibniz Institute for Analytical Sciences, Otto-Hahn-Str. 6b, D-44227 Dortmund, Germany, Tel: (+49)231-1392 4215
| |
Collapse
|
72
|
Hartmann M, Papavlassopoulos H, Chandrasekaran V, Grabosch C, Beiroth F, Lindhorst TK, Röhl C. Inhibition of bacterial adhesion to live human cells: Activity and cytotoxicity of synthetic mannosides. FEBS Lett 2012; 586:1459-65. [DOI: 10.1016/j.febslet.2012.03.059] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 03/16/2012] [Accepted: 03/19/2012] [Indexed: 01/22/2023]
|
73
|
Pertici F, Pieters RJ. Potent divalent inhibitors with rigid glucose click spacers for Pseudomonas aeruginosa lectin LecA. Chem Commun (Camb) 2012; 48:4008-10. [PMID: 22428159 DOI: 10.1039/c2cc30234a] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The synthesis of a new rigid spacer based on carbohydrate-triazole repeating units and their incorporation into divalent systems is described. Inhibition studies showed that a well-matched system with a rigid spacer with flexible ends leads to the most potent inhibition of Pseudomonas aeruginosa lectin LecA.
Collapse
Affiliation(s)
- Francesca Pertici
- Department of Medicinal Chemistry and Chemical Biology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
| | | |
Collapse
|
74
|
Dendronization: A Useful Synthetic Strategy to Prepare Multifunctional Materials. Polymers (Basel) 2012. [DOI: 10.3390/polym4010355] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
75
|
Hickey RM. The role of oligosaccharides from human milk and other sources in prevention of pathogen adhesion. Int Dairy J 2012. [DOI: 10.1016/j.idairyj.2011.09.012] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
76
|
Papadopoulos A, Shiao TC, Roy R. Diazo transfer and click chemistry in the solid phase syntheses of lysine-based glycodendrimers as antagonists against Escherichia coli FimH. Mol Pharm 2012; 9:394-403. [PMID: 22201286 DOI: 10.1021/mp200490b] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Uropathogenic Escherichia coli infections, ultimately leading to cystitis and pyelonephritis, are initially mediated by the adhesion of the bacterial FimH to the transmembrane glycoprotein uroplakin-1a present at the surface of urothelial cells. The adhesion is based on the recognition and high avidity binding between the high-mannose glycans of the uroplakin and the FimH, a mannose-specific lectin located at the tip of type 1 fimbriae. We found that synthetic multiantennary mannopyranosides glycodendrons, harboring triazole functionality at the anomeric position, were potent hemagglutination inhibitors of guinea pig erythrocytes and E. coli. A mannosylated dendrimer exposing up to sixteen sugar residues showed an HAI titer of 1 μM and was thus 500-fold more potent than the corresponding monovalent methyl α-d-mannopyranoside. The synthesis of the glycodendrons involved highly efficient solid-phase synthesis of branched l-lysine scaffolds, diazo transfer reaction on the terminal amine residues, and 1,3-dipolar copper-catalyzed azide-alkyne cycloaddition using propargyl α-d-mannopyranoside.
Collapse
Affiliation(s)
- Alex Papadopoulos
- PharmaQAM, Department of Chemistry, Université du Québec à Montréal, PO Box 8888, Succ Centre-ville, Montréal, Québec, Canada
| | | | | |
Collapse
|
77
|
Kovačević M, Barišić L, Ribić R, Peroković VP, Tomić S, Rapić V. Ferrocene conjugates with mannose: synthesis and influence of ferrocene aglycon on mannose-mediated adhesion of Escherichia coli. Appl Organomet Chem 2012. [DOI: 10.1002/aoc.1869] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Monika Kovačević
- Department of Organic Chemistry; Faculty of Food Technology and Biotechnology; Pierottijeva 6; HR-10000; Zagreb; Croatia
| | - Lidija Barišić
- Department of Organic Chemistry; Faculty of Food Technology and Biotechnology; Pierottijeva 6; HR-10000; Zagreb; Croatia
| | - Rosana Ribić
- Department of Chemistry; Faculty of Science; Horvatovac 102a; HR-10000; Zagreb; Croatia
| | | | - Srđanka Tomić
- Department of Chemistry; Faculty of Science; Horvatovac 102a; HR-10000; Zagreb; Croatia
| | - Vladimir Rapić
- Department of Organic Chemistry; Faculty of Food Technology and Biotechnology; Pierottijeva 6; HR-10000; Zagreb; Croatia
| |
Collapse
|
78
|
Liu X, Liu J, Luo Y. Facile glycosylation of dendrimers for eliciting specific cell–material interactions. Polym Chem 2012. [DOI: 10.1039/c1py00404b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
79
|
Thomas RJ. Receptor mimicry as novel therapeutic treatment for biothreat agents. Bioeng Bugs 2011; 1:17-30. [PMID: 21327124 DOI: 10.4161/bbug.1.1.10049] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Revised: 09/10/2009] [Accepted: 09/11/2009] [Indexed: 12/20/2022] Open
Abstract
The specter of intentional release of pathogenic microbes and their toxins is a real threat. This article reviews the literature on adhesins of biothreat agents, their interactions with oligosaccharides and the potential for anti-adhesion compounds as an alternative to conventional therapeutics. The minimal binding structure of ricin has been well characterised and offers the best candidate for successful anti-adhesion therapy based on the Galβ1-4GlcNAc structure. The botulinum toxin serotypes A-F bind to a low number of gangliosides (GT1b, GQ1b, GD1a and GD1b) hence it should be possible to determine the minimal structure for binding. The minimal disaccharide sequence of GalNAcβ1-4Gal found in the gangliosides asialo-GM1 and asialo-GM2 is required for adhesion for many respiratory pathogens. Although a number of adhesins have been identified in bacterial biothreat agents such as Yersinia pestis, Bacillus anthracis, Francisella tularensis, Brucella species and Burkholderia pseudomallei, specific information regarding their in vivo expression during pneumonic infection is lacking. Limited oligosaccharide inhibition studies indicate the potential of GalNAcβ1-4Gal, GalNAcβ-3Gal and the hydrophobic compound, para-nitrophenol as starting points for the rational design of generic anti-adhesion compounds. A cocktail of multivalent oligosaccharides based on the minimal binding structures of identified adhesins would offer the best candidates for anti-adhesion therapy.
Collapse
|
80
|
Production of galactooligosaccharides and heterooligosaccharides with disrupted cell extracts and whole cells of lactic acid bacteria and bifidobacteria. Int Dairy J 2011. [DOI: 10.1016/j.idairyj.2011.04.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
81
|
Ding N, Zhang Z, Zhang W, Chun Y, Wang P, Qi H, Wang S, Li Y. Synthesis and antibacterial evaluation of a series of oligorhamnoside derivatives. Carbohydr Res 2011; 346:2126-35. [DOI: 10.1016/j.carres.2011.07.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 07/29/2011] [Accepted: 07/31/2011] [Indexed: 10/17/2022]
|
82
|
Xue X, Pasparakis G, Halliday N, Winzer K, Howdle SM, Cramphorn CJ, Cameron NR, Gardner PM, Davis BG, Fernández-Trillo F, Alexander C. Synthetic polymers for simultaneous bacterial sequestration and quorum sense interference. Angew Chem Int Ed Engl 2011; 50:9852-6. [PMID: 21922612 DOI: 10.1002/anie.201103130] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2011] [Indexed: 11/10/2022]
Abstract
Double agents: dual-action polymers are able to sequester rapidly the marine organism Vibrio harveyi from suspension, while at the same time quenching bacterial quorum sense (QS) signals. The potency of the polymers is assessed by cell aggregation experiments and competitive binding assays against a QS signal precursor, and their effect on bacterial behavior is shown by means of bioluminescence.
Collapse
Affiliation(s)
- Xuan Xue
- School of Pharmacy, The University of Nottingham, University Park, UK
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
83
|
Xue X, Pasparakis G, Halliday N, Winzer K, Howdle SM, Cramphorn CJ, Cameron NR, Gardner PM, Davis BG, Fernández-Trillo F, Alexander C. Synthetic Polymers for Simultaneous Bacterial Sequestration and Quorum Sense Interference. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103130] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
84
|
Thadke SA, Kar M, Gupta SS, Hotha S. Gold catalyzed glycosidations for the synthesis of sugar acrylate/acrylamide hybrids and their utility. Carbohydr Res 2011; 346:1511-8. [DOI: 10.1016/j.carres.2011.04.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Revised: 03/27/2011] [Accepted: 04/12/2011] [Indexed: 12/29/2022]
|
85
|
Soomro ZH, Cecioni S, Blanchard H, Praly JP, Imberty A, Vidal S, Matthews SE. CuAAC synthesis of resorcin[4]arene-based glycoclusters as multivalent ligands of lectins. Org Biomol Chem 2011; 9:6587-97. [PMID: 21837347 DOI: 10.1039/c1ob05676j] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Synthetic multivalent glycoclusters show promise as anti-adhesives for the treatment of bacterial infections. Here we report the synthesis of a family of tetravalent galactose and lactose functionalised macrocycles based on the resorcin[4]arene core. The development of diastereoselective synthetic routes for the formation of lower-rim propargylated resorcin[4]arenes and their functionalistion via Cu-catalyzed azide-alkyne click chemistry is described. ELLA binding studies confirm that galactose sugar clusters are effective ligands for the PA-IL bacterial lectin of Pseudomonas aeruginosa while poor binding for the lactose-based monovalent probe and no binding could be measured for the multivalent glycoclusters was observed for the human galectin-1.
Collapse
Affiliation(s)
- Zahid H Soomro
- School of Pharmacy, University of East Anglia, Norwich, UK NR4 7TJ
| | | | | | | | | | | | | |
Collapse
|
86
|
Almant M, Moreau V, Kovensky J, Bouckaert J, Gouin SG. Clustering of Escherichia coli Type-1 Fimbrial Adhesins by Using Multimeric Heptyl α-D-Mannoside Probes with a Carbohydrate Core. Chemistry 2011; 17:10029-38. [DOI: 10.1002/chem.201100515] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 06/16/2011] [Indexed: 11/10/2022]
|
87
|
Kirkeby S, Friis M, Mikkelsen H, Cayé-Thomasen P. Bacterial adherence in otitis media: Determination of N-acetylgalactosamine (GalNAc) residues in the submucosal glands and surface epithelium of the normal and diseased Eustachian tube. Microb Pathog 2011; 51:48-57. [DOI: 10.1016/j.micpath.2011.03.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2010] [Revised: 03/14/2011] [Accepted: 03/16/2011] [Indexed: 10/18/2022]
|
88
|
Hartmann M, Lindhorst TK. The Bacterial Lectin FimH, a Target for Drug Discovery – Carbohydrate Inhibitors of Type 1 Fimbriae‐Mediated Bacterial Adhesion. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100407] [Citation(s) in RCA: 146] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Mirja Hartmann
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel Otto‐Hahn‐Platz 3/4, 24098 Kiel, Germany, Fax: +49‐431‐880‐7410
| | - Thisbe K. Lindhorst
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel Otto‐Hahn‐Platz 3/4, 24098 Kiel, Germany, Fax: +49‐431‐880‐7410
| |
Collapse
|
89
|
Miller GJ, Gardiner JM. A synthesis of C-glycosidic multivalent mannosides suitable for divergent functionalized conjugation. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.04.047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
90
|
Schierholt A, Hartmann M, Lindhorst TK. Bi- and trivalent glycopeptide mannopyranosides as inhibitors of type 1 fimbriae-mediated bacterial adhesion: variation of valency, aglycon and scaffolding. Carbohydr Res 2011; 346:1519-26. [PMID: 21645881 DOI: 10.1016/j.carres.2011.04.023] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 04/12/2011] [Accepted: 04/16/2011] [Indexed: 11/27/2022]
Abstract
In order to test relevant structural parameters for effective inhibition of mannose-specific bacterial adhesion, bi- and trivalent glycopeptide α-D-mannopyranosides were synthesized that differ in their conformational properties as well as in the spatial arrangement of attached mannosyl residues. They were tested in an inhibition adhesion assay with fluorescent Escherichia coli bacteria and testing results were referenced to the inhibitory potency of methyl α-D-mannopyranoside. It was shown, that besides the nature of the mannoside aglycon moiety, scaffolding of α-D-mannopyranosides on a peptide backbone was important for the performance of the synthesized glycopeptides as inhibitors of bacterial adhesion.
Collapse
Affiliation(s)
- Alexander Schierholt
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3/4, 24098 Kiel, Germany
| | | | | |
Collapse
|
91
|
Grabosch C, Hartmann M, Schmidt-Lassen J, Lindhorst TK. Squaric Acid Monoamide Mannosides as Ligands for the Bacterial Lectin FimH: Covalent Inhibition or Not? Chembiochem 2011; 12:1066-74. [DOI: 10.1002/cbic.201000774] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Indexed: 11/11/2022]
|
92
|
Development of biosensor-based assays to identify anti-infective oligosaccharides. Anal Biochem 2011; 410:200-5. [DOI: 10.1016/j.ab.2010.11.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Revised: 11/11/2010] [Accepted: 11/19/2010] [Indexed: 11/17/2022]
|
93
|
Kim J, Ahn Y, Park KM, Lee DW, Kim K. Glyco-pseudopolyrotaxanes: carbohydrate wheels threaded on a polymer string and their inhibition of bacterial adhesion. Chemistry 2011; 16:12168-73. [PMID: 20859967 DOI: 10.1002/chem.201001538] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We report glyco-pseudopolyrotaxanes composed of cucurbit[6]uril-based mannose wheels (ManCB[6]) threaded on polyviologen (PV), which not only effectively induce bacterial aggregation, but also exhibit high inhibitory activity against bacterial binding to host cells. Three glyco-pseudopolyrotaxanes (1-3), which have 10, 5, and 3 ManCB[6] wheels, respectively, on a PV string, were prepared and characterized. Bacterial aggregation assays and hemagglutination inhibition assays illustrated the specific and multivalent interaction between the glyco-pseudopolyrotaxanes and E. coli ORN178. Compound 3 was especially effective at inducing bacterial aggregation and showed 300 times higher inhibitory potency than monomeric methyl-α-mannoside (Me-αMan) for ORN178-induced hemagglutination. Furthermore, we demonstrated their inhibitory activities for the adhesion of ORN178 bacteria to urinary epithelial cells as a model of urinary tract infection. Our findings suggest that these supramolecular carbohydrate clusters are potentially useful in antiadhesion therapy.
Collapse
Affiliation(s)
- Jeeyeon Kim
- National Creative Research Initiative Center for Smart Supramolecules, Department of Chemistry and Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), San 31 Hyoja-dong, Pohang 790-784, Republic of Korea
| | | | | | | | | |
Collapse
|
94
|
Babiuch K, Wyrwa R, Wagner K, Seemann T, Hoeppener S, Becer CR, Linke R, Gottschaldt M, Weisser J, Schnabelrauch M, Schubert US. Functionalized, biocompatible coating for superparamagnetic nanoparticles by controlled polymerization of a thioglycosidic monomer. Biomacromolecules 2011; 12:681-91. [PMID: 21254766 DOI: 10.1021/bm101325w] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
It is demonstrated that water-soluble, glucosylated poly(pentafluorostyrene) derivatives revealed favorable coating material properties for magnetic iron oxide nanoparticles. To prepare the coating material in high reproducibility and purity as well as in sufficient amounts, a new route of synthesis is established. The preparation and characterization of the glucosylated, tetrafluorostyryl monomer, by thiol-para-fluorine "click" reaction, and its polymerization, via nitroxide-mediated radical process, is presented in detail. In addition, the coating material and the resulting particle properties are investigated by means of XPS, DLS, TGA, TEM, and cryo-TEM as well as flow cytometry. The glycopolymer acts as an appropriate stabilizing agent for the superparamagnetic nanoparticles by the formation of an approximately 10 nm thick shell, as shown by the XPS analysis. Furthermore, the application of FITC-labeled glycopolymer yielded fluorescent, superparamagnetic nanoparticles, which can be used for monitoring cell-carbohydrate interactions, because these particles show no cytotoxicity toward 3T3 fibroblasts.
Collapse
Affiliation(s)
- Krzysztof Babiuch
- Laboratory of Organic and Macromolecular Chemistry (IOMC) and Jena Center for Soft Matter (JCSM), Friedrich-Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
95
|
Babiuch K, Becer CR, Gottschaldt M, Delaney JT, Weisser J, Beer B, Wyrwa R, Schnabelrauch M, Schubert US. Adhesion of Preosteoblasts and Fibroblasts onto Poly(pentafluorostyrene)-Based Glycopolymeric Films and their Biocompatibility. Macromol Biosci 2011; 11:535-48. [DOI: 10.1002/mabi.201000374] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2010] [Revised: 11/16/2010] [Indexed: 12/15/2022]
|
96
|
Laurino P, Kikkeri R, Azzouz N, Seeberger PH. Detection of bacteria using glyco-dendronized polylysine prepared by continuous flow photofunctionalization. NANO LETTERS 2011; 11:73-78. [PMID: 21114331 DOI: 10.1021/nl102821f] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Biocompatible glyco-dendronized poly-l-lysine (PLL) polymers carry either three or nine mannose- or galactose-bearing dendrons that selectively bind, and thus can be used to detect, bacteria. Central to the synthesis of glyco-dendronized polymers was the development of a continuous flow [2 + 2] photocycloaddition reaction to connect the dendrons and PLL. Glycodendronized polymers cluster bacteria by binding to cell-surface carbohydrate receptors and thereby result in an easy read-out using microscopic analyses.
Collapse
Affiliation(s)
- Paola Laurino
- Max Planck Institute for Colloids and Interfaces, Department of Biomolecular Systems, Research Campus Golm, 14476 Potsdam, Germany
| | | | | | | |
Collapse
|
97
|
Deniaud D, Julienne K, Gouin SG. Insights in the rational design of synthetic multivalent glycoconjugates as lectin ligands. Org Biomol Chem 2011; 9:966-79. [DOI: 10.1039/c0ob00389a] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
98
|
Sicard D, Cecioni S, Iazykov M, Chevolot Y, Matthews SE, Praly JP, Souteyrand E, Imberty A, Vidal S, Phaner-Goutorbe M. AFM investigation of Pseudomonas aeruginosa lectin LecA (PA-IL) filaments induced by multivalent glycoclusters. Chem Commun (Camb) 2011; 47:9483-5. [DOI: 10.1039/c1cc13097h] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
99
|
Kempe K, Neuwirth T, Czaplewska J, Gottschaldt M, Hoogenboom R, Schubert US. Poly(2-oxazoline) glycopolymers with tunable LCST behavior. Polym Chem 2011. [DOI: 10.1039/c1py00099c] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
100
|
Qin G, Santos C, Zhang W, Li Y, Kumar A, Erasquin UJ, Liu K, Muradov P, Trautner BW, Cai C. Biofunctionalization on alkylated silicon substrate surfaces via "click" chemistry. J Am Chem Soc 2010; 132:16432-41. [PMID: 21033708 PMCID: PMC3059218 DOI: 10.1021/ja1025497] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Biofunctionalization of silicon substrates is important to the development of silicon-based biosensors and devices. Compared to conventional organosiloxane films on silicon oxide intermediate layers, organic monolayers directly bound to the nonoxidized silicon substrates via Si-C bonds enhance the sensitivity of detection and the stability against hydrolytic cleavage. Such monolayers presenting a high density of terminal alkynyl groups for bioconjugation via copper-catalyzed azide-alkyne 1,3-dipolar cycloaddition (CuAAC, a "click" reaction) were reported. However, yields of the CuAAC reactions on these monolayer platforms were low. Also, the nonspecific adsorption of proteins on the resultant surfaces remained a major obstacle for many potential biological applications. Herein, we report a new type of "clickable" monolayers grown by selective, photoactivated surface hydrosilylation of α,ω-alkenynes, where the alkynyl terminal is protected with a trimethylgermanyl (TMG) group, on hydrogen-terminated silicon substrates. The TMG groups on the film are readily removed in aqueous solutions in the presence of Cu(I). Significantly, the degermanylation and the subsequent CuAAC reaction with various azides could be combined into a single step in good yields. Thus, oligo(ethylene glycol) (OEG) with an azido tag was attached to the TMG-alkyne surfaces, leading to OEG-terminated surfaces that reduced the nonspecific adsorption of protein (fibrinogen) by >98%. The CuAAC reaction could be performed in microarray format to generate arrays of mannose and biotin with varied densities on the protein-resistant OEG background. We also demonstrated that the monolayer platform could be functionalized with mannose for highly specific capturing of living targets (Escherichia coli expressing fimbriae) onto the silicon substrates.
Collapse
|