51
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Chabre YM, Roy R. Multivalent glycoconjugate syntheses and applications using aromatic scaffolds. Chem Soc Rev 2013; 42:4657-708. [PMID: 23400414 DOI: 10.1039/c3cs35483k] [Citation(s) in RCA: 200] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Glycan-protein interactions are of utmost importance in several biological phenomena. Although the variety of carbohydrate residues in mammalian cells is limited to less than a dozen different sugars, their spatial topographical presentation in what is now associated as the "glycocodes" provides the fundamental keys for specific and high affinity "lock-in" recognition events associated with a wide range of pathologies. Toward deciphering our understanding of these glycocodes, chemists have developed new creative tools that included dendrimer chemistry in order to provide monodisperse multivalent glycoconjugates. This review provides a survey of the numerous aromatic architectures generated for the multivalent presentation of relevant carbohydrates using covalent attachment or supramolecular self-assemblies. The basic concepts toward their controlled syntheses will be described using modern synthetic procedures with a particular emphasis on powerful organometallic methodologies. The large variety of dendritic aromatic scaffolds, together with a brief survey of their unique biophysical and biological properties will be critically reviewed. The distinctiveness of the resulting multivalent glycoarchitectures, encompassing glycoclusters, glycodendrimers and molecularly defined self-assemblies, in forming well organized cross-linked lattices with multivalent carbohydrate binding proteins (lectins) together with their photophysical, medical, and imaging properties will also be briefly highlighted. The topic will be presented in increasing order of aromatic backbone complexities and will end with fullerenes together with self-assembled nanostructures, thus complementing the various scaffolds described in this special thematic issue dedicated to multivalent glycoscience.
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Affiliation(s)
- Yoann M Chabre
- Pharmaqam - Department of Chemistry, Université du Québec à Montréal, P.O. Box 8888, Succ. Centre-ville, Montréal, Québec, Canada H3C 3P8
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52
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Bazzicalupi C, Bianchi A, Giorgi C, Gratteri P, Mariani P, Valtancoli B. Metal Ion Binding by a G-2 Poly(ethylene imine) Dendrimer. Ion-Directed Self-Assembling of Hierarchical Mono- and Two-Dimensional Nanostructured Materials. Inorg Chem 2013; 52:2125-37. [DOI: 10.1021/ic3025292] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Carla Bazzicalupi
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Antonio Bianchi
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Claudia Giorgi
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Paola Gratteri
- Department of NEUROFARBA, Pharmaceutical and Nutraceutical Section, and Laboratory of Molecular Modeling Cheminformatics & QSAR, University of Florence, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Italy
| | - Palma Mariani
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Barbara Valtancoli
- Department of Chemistry “Ugo
Schiff”, University of Florence,
Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
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53
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Choi SK, Myc A, Silpe JE, Sumit M, Wong PT, McCarthy K, Desai AM, Thomas TP, Kotlyar A, Holl MMB, Orr BG, Baker JR. Dendrimer-based multivalent vancomycin nanoplatform for targeting the drug-resistant bacterial surface. ACS NANO 2013; 7:214-228. [PMID: 23259666 DOI: 10.1021/nn3038995] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Vancomycin represents the preferred ligand for bacteria-targeting nanosystems. However, it is inefficient for emerging vancomycin-resistant species because of its poor affinity to the reprogrammed cell wall structure. This study demonstrates the use of a multivalent strategy as an effective way for overcoming such an affinity limitation in bacteria targeting. We designed a series of fifth generation (G5) poly(amidoamine) (PAMAM) dendrimers tethered with vancomycin at the C-terminus at different valencies. We performed surface plasmon resonance (SPR) studies to determine their binding avidity to two cell wall models, each made with either a vancomycin-susceptible (D)-Ala-(D)-Ala or vancomycin-resistant (D)-Ala-(D)-Lac cell wall precursor. These conjugates showed remarkable enhancement in avidity in the cell wall models tested, including the vancomycin-resistant model, which had an increase in avidity of four to five orders of magnitude greater than free vancomycin. The tight adsorption of the conjugate to the model surface corresponded with its ability to bind vancomycin-susceptible Staphylococcus aureus bacterial cells in vitro as imaged by confocal fluorescent microscopy. This vancomycin platform was then used to fabricate the surface of iron oxide nanoparticles by coating them with the dendrimer conjugates, and the resulting dendrimer-covered magnetic nanoparticles were demonstrated to rapidly sequester bacterial cells. In summary, this article investigates the biophysical basis of the tight, multivalent association of dendrimer-based vancomycin conjugates to the bacterial cell wall, and proposes a potential new use of this nanoplatform in targeting Gram-positive bacteria.
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Affiliation(s)
- Seok Ki Choi
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, USA.
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54
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Luczkowiak J, Muñoz A, Sánchez-Navarro M, Ribeiro-Viana R, Ginieis A, Illescas BM, Martín N, Delgado R, Rojo J. Glycofullerenes Inhibit Viral Infection. Biomacromolecules 2013; 14:431-7. [DOI: 10.1021/bm3016658] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Joanna Luczkowiak
- Laboratorio de Microbiología
Molecular, Instituto de Investigación Hospital, 12 de Octubre (imas12), 28041 Madrid, Spain
| | - Antonio Muñoz
- Departamento de
Química Orgánica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
| | - Macarena Sánchez-Navarro
- Glycosystems
Laboratory, Instituto de Investigaciones Químicas (IIQ), CSIC − Universidad de Sevilla, Av. Américo
Vespucio 49, Seville 41092 Spain
| | - Renato Ribeiro-Viana
- Glycosystems
Laboratory, Instituto de Investigaciones Químicas (IIQ), CSIC − Universidad de Sevilla, Av. Américo
Vespucio 49, Seville 41092 Spain
| | - Anthony Ginieis
- Glycosystems
Laboratory, Instituto de Investigaciones Químicas (IIQ), CSIC − Universidad de Sevilla, Av. Américo
Vespucio 49, Seville 41092 Spain
| | - Beatriz M. Illescas
- Departamento de
Química Orgánica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
| | - Nazario Martín
- Departamento de
Química Orgánica, Facultad de Química, Universidad Complutense, 28040 Madrid, Spain
- IMDEA-Nanoscience, Campus Cantoblanco, 28049 Madrid, Spain
| | - Rafael Delgado
- Laboratorio de Microbiología
Molecular, Instituto de Investigación Hospital, 12 de Octubre (imas12), 28041 Madrid, Spain
| | - Javier Rojo
- Glycosystems
Laboratory, Instituto de Investigaciones Químicas (IIQ), CSIC − Universidad de Sevilla, Av. Américo
Vespucio 49, Seville 41092 Spain
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55
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Abstract
The key role of carbohydrates in many biological events has attracted the interest of the scientific community. This fact has demanded the access to new tools necessary to understand this role and the interaction of carbohydrates with their corresponding receptors, lectins. Glycodendrimers and glycodendritic structures in general, have demonstrated to be very efficient and interesting tools to intervene in those processes where carbohydrates participate. In this review, we discuss the different glycodendritic structures that have been used to interfere with DC-SIGN, a very attractive lectin involved in infection processes and in the regulation of the immune response.
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56
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Nazemi A, Gillies ER. Dendritic surface functionalization of nanomaterials: controlling properties and functions for biomedical applications. BRAZ J PHARM SCI 2013. [DOI: 10.1590/s1984-82502013000700003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A wide variety of nanomaterials have demonstrated promise in medical applications such as drug delivery and imaging. In these applications, the surface chemistry of the materials is critical as it plays an important role in determining the toxicity and biodistribution behavior of the material. We review here the functionalization of nanomaterials with dendrons as an efficient method to alter the surface chemistry of the materials, introducing new properties and functions. Described here is the functionalization of superparamagnetic iron oxide nanoparticles (SPIO) with dendritic guanidines to enhance their transport into cells for magnetic resonance imaging applications. The introduction of dendrons bearing peripheral hydroxyls, amines, guanidines, carbohydrates and Gd(III) chelates to polymer vesicles (polymersomes) is also described. These dendritic moieties allow for modulation of toxicity, cell uptake, protein binding, and contrast agent efficiency, while at the same time allowing the stabilities of the polymersomes to be maintained. Thus, this approach holds promise for the development of a wide range of multifunctional materials for pharmaceutical applications.
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57
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Bazzicalupi C, Bianchi A, Giorgi C, Gratteri P, Mariani P, Valtancoli B. Anion and ion-pair binding by a G-2 poly(ethylene imine) dendrimer. Dalton Trans 2013; 42:12130-8. [DOI: 10.1039/c3dt32926g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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58
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Applications of Glyconanoparticles as “Sweet” Glycobiological Therapeutics and Diagnostics. MULTIFACETED DEVELOPMENT AND APPLICATION OF BIOPOLYMERS FOR BIOLOGY, BIOMEDICINE AND NANOTECHNOLOGY 2013. [DOI: 10.1007/12_2012_208] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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59
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Lamanna G, Smulski CR, Chekkat N, Estieu-Gionnet K, Guichard G, Fournel S, Bianco A. Multimerization of an apoptogenic TRAIL-mimicking peptide by using adamantane-based dendrons. Chemistry 2012; 19:1762-8. [PMID: 23239456 DOI: 10.1002/chem.201202415] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Revised: 10/03/2012] [Indexed: 11/07/2022]
Abstract
We have developed a straightforward strategy to multimerize an apoptogenic peptide that mimics the natural tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) by using adamantane-based dendrons as multivalent scaffolds. The selective binding affinity of the ligands to TRAIL receptor 2 (TR2) was studied by surface plasmon resonance, thus demonstrating that the trimeric and hexameric forms of the peptide exert an increased affinity of about 1500- and 20,000-fold, respectively, relative to the monomer. Moreover, only the trimeric and hexameric ligands were able to induce cell death in TR2 expressing cells (BJAB), thus confirming that a multivalent form of the peptide is necessary to trigger a substantial TR2-dependent apoptotic response in vitro. These results provide interesting insight into the multivalency effect on biological ligand/receptor interactions for future therapeutic applications.
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Affiliation(s)
- Giuseppe Lamanna
- CNRS, Institut de Biologie Moléculaire et Cellulaire, Laboratoire d'Immunologie et Chimie Thérapeutiques, 15 Rue René Descartes, 67084 Strasbourg, France.
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60
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Lauterbach T, Manna M, Ruhnow M, Wisantoso Y, Wang Y, Matysik A, Oglęcka K, Mu Y, Geifman-Shochat S, Wohland T, Kraut R. Weak glycolipid binding of a microdomain-tracer peptide correlates with aggregation and slow diffusion on cell membranes. PLoS One 2012; 7:e51222. [PMID: 23251459 PMCID: PMC3520979 DOI: 10.1371/journal.pone.0051222] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 10/30/2012] [Indexed: 11/18/2022] Open
Abstract
Organized assembly or aggregation of sphingolipid-binding ligands, such as certain toxins and pathogens, has been suggested to increase binding affinity of the ligand to the cell membrane and cause membrane reorganization or distortion. Here we show that the diffusion behavior of the fluorescently tagged sphingolipid-interacting peptide probe SBD (Sphingolipid Binding Domain) is altered by modifications in the construction of the peptide sequence that both result in a reduction in binding to ganglioside-containing supported lipid membranes, and at the same time increase aggregation on the cell plasma membrane, but that do not change relative amounts of secondary structural features. We tested the effects of modifying the overall charge and construction of the SBD probe on its binding and diffusion behavior, by Surface Plasmon Resonance (SPR; Biacore) analysis on lipid surfaces, and by Fluorescence Correlation Spectroscopy (FCS) on live cells, respectively. SBD binds preferentially to membranes containing the highly sialylated gangliosides GT1b and GD1a. However, simple charge interactions of the peptide with the negative ganglioside do not appear to be a critical determinant of binding. Rather, an aggregation-suppressing amino acid composition and linker between the fluorophore and the peptide are required for optimum binding of the SBD to ganglioside-containing supported lipid bilayer surfaces, as well as for interaction with the membrane. Interestingly, the strength of interactions with ganglioside-containing artificial membranes is mirrored in the diffusion behavior by FCS on cell membranes, with stronger binders displaying similar characteristic diffusion profiles. Our findings indicate that for aggregation-prone peptides, aggregation occurs upon contact with the cell membrane, and rather than giving a stronger interaction with the membrane, aggregation is accompanied by weaker binding and complex diffusion profiles indicative of heterogeneous diffusion behavior in the probe population.
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Affiliation(s)
- Tim Lauterbach
- School of Biological Sciences, Nanyang Technological University, Singapore
- Institut für Lebensmittel- und Bioverfahrenstechnik, Technische Universität Dresden, Dresden, Germany
| | - Manoj Manna
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Maria Ruhnow
- School of Biological Sciences, Nanyang Technological University, Singapore
- Institut für Lebensmittel- und Bioverfahrenstechnik, Technische Universität Dresden, Dresden, Germany
| | - Yudi Wisantoso
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Yaofeng Wang
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Artur Matysik
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Kamila Oglęcka
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Yuguang Mu
- School of Biological Sciences, Nanyang Technological University, Singapore
| | | | - Thorsten Wohland
- Department of Chemistry, National University of Singapore, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore
- Centre for Bioimaging Sciences, National University of Singapore, Singapore
| | - Rachel Kraut
- School of Biological Sciences, Nanyang Technological University, Singapore
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61
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62
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Ahlén G, Strindelius L, Johansson T, Nilsson A, Chatzissavidou N, Sjöblom M, Rova U, Holgersson J. Mannosylated mucin-type immunoglobulin fusion proteins enhance antigen-specific antibody and T lymphocyte responses. PLoS One 2012; 7:e46959. [PMID: 23071675 PMCID: PMC3470573 DOI: 10.1371/journal.pone.0046959] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Accepted: 09/07/2012] [Indexed: 01/02/2023] Open
Abstract
Targeting antigens to antigen-presenting cells (APC) improve their immunogenicity and capacity to induce Th1 responses and cytotoxic T lymphocytes (CTL). We have generated a mucin-type immunoglobulin fusion protein (PSGL-1/mIgG(2b)), which upon expression in the yeast Pichia pastoris became multivalently substituted with O-linked oligomannose structures and bound the macrophage mannose receptor (MMR) and dendritic cell-specific intercellular adhesion molecule-3 grabbing non-integrin (DC-SIGN) with high affinity in vitro. Here, its effects on the humoral and cellular anti-ovalbumin (OVA) responses in C57BL/6 mice are presented.OVA antibody class and subclass responses were determined by ELISA, the generation of anti-OVA CTLs was assessed in (51)Cr release assays using in vitro-stimulated immune spleen cells from the different groups of mice as effector cells and OVA peptide-fed RMA-S cells as targets, and evaluation of the type of Th cell response was done by IFN-γ, IL-2, IL-4 and IL-5 ELISpot assays.Immunizations with the OVA - mannosylated PSGL-1/mIgG(2b) conjugate, especially when combined with the AbISCO®-100 adjuvant, lead to faster, stronger and broader (with regard to IgG subclass) OVA IgG responses, a stronger OVA-specific CTL response and stronger Th1 and Th2 responses than if OVA was used alone or together with AbISCO®-100. Also non-covalent mixing of mannosylated PSGL-1/mIgG(2b), OVA and AbISCO®-100 lead to relatively stronger humoral and cellular responses. The O-glycan oligomannoses were necessary because PSGL-1/mIgG(2b) with mono- and disialyl core 1 structures did not have this effect.Mannosylated mucin-type fusion proteins can be used as versatile APC-targeting molecules for vaccines and as such enhance both humoral and cellular immune responses.
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63
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Woodward AM, Senchyna M, Williams R, Argüeso P. Characterization of the interaction between hydroxypropyl guar galactomannan and galectin-3. Biochem Biophys Res Commun 2012; 424:12-7. [PMID: 22683626 DOI: 10.1016/j.bbrc.2012.05.160] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 05/30/2012] [Indexed: 12/25/2022]
Abstract
Multivalent galactose ligands have been proposed for selective targeting of carbohydrate-binding proteins on epithelial cell surfaces, both in normal and pathological conditions. One cellular partner is galectin-3, a β-galactoside-binding protein present on many epithelial linings, such as those of the ocular surface. In this study, we investigated the ability of hydroxypropyl guar galactomannan (HPGG) to bind recombinant galectin-3 and to target the apical surface of differentiated human corneal keratinocytes. Pull-down and slot-blot assays demonstrated that fluorescence-labeled HPGG bound recombinant galectin-3 through a galactose-dependent mechanism. In contrast, no binding of HPGG could be detected towards recombinant galectin-8 or -9. In a cell culture system, HPGG bound weakly to biotinylated cell surface corneal isolates containing endogenous galectin-3, and incubation of HPGG with corneal keratinocytes in culture resulted in discrete, galactose-independent, binding to the cell surface. Moreover, HPGG failed to elute the biological counter-receptor MUC16 from galectin-3 affinity columns. We conclude that HPGG binds galectin-3 through the conventional carbohydrate-recognition domain in vitro, but not in a biological system, suggesting that endogenous carbohydrate ligands on epithelial cell surface glycocalyces impair HPGG biorecognition.
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Affiliation(s)
- Ashley M Woodward
- Schepens Eye Research Institute, Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA 02114, USA
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64
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Ponader D, Wojcik F, Beceren-Braun F, Dernedde J, Hartmann L. Sequence-Defined Glycopolymer Segments Presenting Mannose: Synthesis and Lectin Binding Affinity. Biomacromolecules 2012; 13:1845-52. [DOI: 10.1021/bm300331z] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Daniela Ponader
- MPI of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam-Golm,
Germany
| | - Felix Wojcik
- MPI of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam-Golm,
Germany
| | - Figen Beceren-Braun
- Institut für
Laboratoriumsmedizin,
Klinische Chemie und Pathobiochemie, Charité-Universitätsmedizin, 12203 Berlin, Germany
| | - Jens Dernedde
- Institut für
Laboratoriumsmedizin,
Klinische Chemie und Pathobiochemie, Charité-Universitätsmedizin, 12203 Berlin, Germany
| | - Laura Hartmann
- MPI of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam-Golm,
Germany
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65
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Ballut S, Makky A, Chauvin B, Michel JP, Kasselouri A, Maillard P, Rosilio V. Tumor targeting in photodynamic therapy. From glycoconjugated photosensitizers to glycodendrimeric one. Concept, design and properties. Org Biomol Chem 2012; 10:4485-95. [PMID: 22569817 DOI: 10.1039/c2ob25181g] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In this paper, we discuss the evolution over the last 15 years in the Curie Institute of the concept, the development of the design and some properties of glycoconjugated photosensitizers with the aim to optimize the tumor targeting in photodynamic therapy. By this research, we have shown that specific interactions between a mannose-lectin and trimannosylglycodendrimeric porphyrins contributed to a larger extent than non-specific ones to the overall interaction of a glycosylated tetraarylporphyrin with a membrane. The studies of in vitro photocytotoxicity showed the relevance of the global geometry of the photosensitizer, the number and position of the linked glycopyranosyl groups on the chromophore and their lipophilicity. The two best compounds appeared to be porphyrins bearing three α-glycosyl groups on para-position of meso-phenyl via a flexible linker. Compound bearing α-manosyl moieties was evaluated successfully in two in vivo xenografted animal models of human retinoblastoma and colorectal cancers. Conversely, the presence on the chromophore of three sugars via a glycodendrimeric moiety induced a potential cluster effect, but decreased the in vitro photoefficiency despite a good affinity for a mannose-lectin.
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Affiliation(s)
- Séverine Ballut
- Institut Curie, Centre de Recherche, Bât 110-112, Orsay, F-91405, France
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66
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Mishra V, Gupta U, Jain NK. Surface-Engineered Dendrimers: a Solution for Toxicity Issues. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 20:141-66. [DOI: 10.1163/156856208x386246] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Vijay Mishra
- a Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar (M.P.) 470003, India
| | - Umesh Gupta
- b Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar (M.P.) 470003, India
| | - N. K. Jain
- c Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. H. S. Gour University, Sagar (M.P.) 470003, India
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67
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Lopez-Jaramillo FJ, Ortega-Muñoz M, Megia-Fernandez A, Hernandez-Mateo F, Santoyo-Gonzalez F. Vinyl Sulfone Functionalization: A Feasible Approach for the Study of the Lectin–Carbohydrate Interactions. Bioconjug Chem 2012; 23:846-55. [DOI: 10.1021/bc200681c] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Francisco Javier Lopez-Jaramillo
- Departamento de Química
Orgánica, Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Mariano Ortega-Muñoz
- Departamento de Química
Orgánica, Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | | | - Fernando Hernandez-Mateo
- Departamento de Química
Orgánica, Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
| | - Francisco Santoyo-Gonzalez
- Departamento de Química
Orgánica, Instituto de Biotecnología, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain
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68
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Matsuoka K, Arai H, Oka H, Koyama T, Hatano K. Synthetic Assembly of Bifluorescence-Labeled Glycopolymers as Substrates for Assaying α-Amylase by Resonance Energy Transfer. ACS Macro Lett 2012; 1:266-269. [PMID: 35578520 DOI: 10.1021/mz200135y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
To meet the need for a convenient substrate for sensitive and continuous assay for α-amylase, we developed a fluorescence resonance energy transfer (FRET)-based polymer substrate. Radical copolymerization of FRET-component monomers in different ratios of fluorogenic donor and acceptor was utilized to prepare such polymers. A glycomonomer as a fluorogenic donor was derived from naphthylmethylated maltotetraose, and a dansyl derivative monomer was used as an acceptor. Their mixture and acryl amide were copolymerized in a typical radical polymerization to yield a bifluorescence-labeled polymer in good yield. All of the polymers showed effective FRET and were used for the continuous assay of human salivary α-amylase. The time course of α-amylase reactions led to the apparent kinetic parameters of Km = 4 μM and Vmax = 0.29 nmol/min. The results strongly suggested that FRET-sensitive polymers are conveniently accessible and applicable for the sensitive determination of biochemical events.
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Affiliation(s)
- Koji Matsuoka
- Area for Molecular Function,
Division of
Material Science, Graduate School of Science and Engineering, Saitama University, Sakura, Saitama 338-8570, Japan
| | - Hirokatsu Arai
- Area for Molecular Function,
Division of
Material Science, Graduate School of Science and Engineering, Saitama University, Sakura, Saitama 338-8570, Japan
| | - Hiroyuki Oka
- Area for Molecular Function,
Division of
Material Science, Graduate School of Science and Engineering, Saitama University, Sakura, Saitama 338-8570, Japan
| | - Tetsuo Koyama
- Area for Molecular Function,
Division of
Material Science, Graduate School of Science and Engineering, Saitama University, Sakura, Saitama 338-8570, Japan
| | - Ken Hatano
- Area for Molecular Function,
Division of
Material Science, Graduate School of Science and Engineering, Saitama University, Sakura, Saitama 338-8570, Japan
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69
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Garzoni M, Cheval N, Fahmi A, Danani A, Pavan GM. Ion-selective controlled assembly of dendrimer-based functional nanofibers and their ionic-competitive disassembly. J Am Chem Soc 2012; 134:3349-57. [PMID: 22263548 DOI: 10.1021/ja206611s] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The construction of hierarchical materials through controlled self-assembly of molecular building blocks (e.g., dendrimers) represents a unique opportunity to generate functional nanodevices in a convenient way. Transition-metal compounds are known to be able to interact with cationic dendrimers to generate diverse supramolecular structures, such as nanofibers, with interesting collective properties. In this work, molecular dynamics simulation (MD) demonstrates that acetate ions from dissociated Cd(CH(3)COO)(2) selectively generate cationic PPI-dendrimer functional fibers through hydrophobic modification of the dendrimer's surface. The hydrophobic aggregation of dendrimers is triggered by the asymmetric nature of the acetate anions (AcO(-)) rather than by the precise transition metal (Cd). The assembling directionality is also controlled by the concentration of AcO(-) ions in solution. Atomic force (AFM) and transmission electron microscopy (TEM) prove these results. This well-defined directional assembly of cationic dendrimers is absent for different cadmium derivatives (i.e., CdCl(2), CdSO(4)) with symmetric anions. Moreover, since the formation of these nanofibers is controlled exclusively by selected anions, fiber disassembly can be consequently triggered via simple ionic competition by NaCl salt. Ions are here reported as a simple and cost-effective tool to drive and control actively the assembly and the disassembly of such functional nanomaterials based on dendrimers.
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Affiliation(s)
- Matteo Garzoni
- Laboratory of Applied Mathematics and Physics, University of Applied Sciences of Southern Switzerland, Centro Galleria 2, Manno, 6928, Switzerland
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70
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Witte AB, Timmer CM, Gam JJ, Choi SK, Banaszak Holl MM, Orr BG, Baker JR, Sinniah K. Biophysical characterization of a riboflavin-conjugated dendrimer platform for targeted drug delivery. Biomacromolecules 2012; 13:507-16. [PMID: 22191428 DOI: 10.1021/bm201566g] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The present study describes the biophysical characterization of generation-five poly(amidoamine) (PAMAM) dendrimers conjugated with riboflavin (RF) as a cancer-targeting platform. Two new series of dendrimers were designed, each presenting the riboflavin ligand attached at a different site (isoalloxazine at N-3 and d-ribose at N-10) and at varying ligand valency. Isothermal titration calorimetry (ITC) and differential scanning calorimetry (DSC) were used to determine the binding activity for riboflavin binding protein (RfBP) in a cell-free solution. The ITC data shows dendrimer conjugates have K(D) values of ≥ 465 nM on a riboflavin basis, an affinity ~93-fold lower than that of free riboflavin. The N-3 series showed greater binding affinity in comparison with the N-10 series. Notably, the affinity is inversely correlated with ligand valency. These findings are also corroborated by DSC, where greater protein-conjugate stability is achieved with the N-3 series and at lower ligand valency.
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Affiliation(s)
- Amanda B Witte
- Department of Chemistry & Biochemistry, Calvin College, 3201 Burton Street South East, Grand Rapids, Michigan 49546, United States
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71
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72
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General procedure for the synthesis of neoglycoproteins and immobilization on epoxide-modified glass slides. Methods Mol Biol 2012; 808:155-65. [PMID: 22057524 DOI: 10.1007/978-1-61779-373-8_11] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Neoglycoproteins, such as BSA-glycosides, contain carbohydrates covalently attached to a protein carrier via nonnaturally occurring linkages. These conjugates have been used for decades to study carbohydrate-protein interactions and are frequently used as immunogens to raise antibodies to carbohydrate antigens. In fact, neoglycoproteins have been used extensively as vaccine antigens and several have obtained FDA approval. More recently, neoglycoproteins have been used in the construction of glycan arrays to produce "neoglycoprotein microarrays." In this chapter, two methods for preparing neoglycoproteins are described along with methods to immobilize these conjugates on epoxide-coated glass microscope slides to produce arrays.
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73
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Dendrimer-based multivalent methotrexates as dual acting nanoconjugates for cancer cell targeting. Eur J Med Chem 2011; 47:560-72. [PMID: 22142685 DOI: 10.1016/j.ejmech.2011.11.027] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 11/08/2011] [Accepted: 11/15/2011] [Indexed: 11/23/2022]
Abstract
Cancer-targeting drug delivery can be based on the rational design of a therapeutic platform. This approach is typically achieved by the functionalization of a nanoparticle with two distinct types of molecules, a targeting ligand specific for a cancer cell, and a cytotoxic molecule to kill the cell. The present study aims to evaluate the validity of an alternative simplified approach in the design of cancer-targeting nanotherapeutics: conjugating a single type of molecule with dual activities to nanoparticles, instead of coupling a pair of orthogonal molecules. Herein we investigate whether this strategy can be validated by its application to methotrexate, a dual-acting small molecule that shows cytotoxicity because of its potent inhibitory activity against dihydrofolate reductase and that binds folic acid receptor, a tumor biomarker frequently upregulated on the cancer cell surface. This article describes a series of dendrimer conjugates derived from a generation 5 polyamidoamine (G5 PAMAM) presenting a multivalent array of methotrexate and also demonstrates their dual biological activities by surface plasmon resonance spectroscopy, a cell-free enzyme assay, and cell-based experiments with KB cancer cells.
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74
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Wang C, Sanders B, Baker DC. Synthesis of a glycodendrimer incorporating multiple mannosides on a glucoside core. CAN J CHEM 2011. [DOI: 10.1139/v11-069] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The synthesis of a glycodendrimer by incorporating repetitive mannoside units onto a glucoside core was carried out to multivalently probe fundamental carbohydrate–protein interactions. The dendritic structure was constructed by a modified procedure that utilized multiple glycosylations between a thioether glycosyl donor and five elongated spacer arms of a glycosyl acceptor. The completed dendrimer bears a full carbohydrate structure, and thus should find its potential application in the study of mannose–lectin interactions.
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Affiliation(s)
- Chao Wang
- School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China
| | - Brian Sanders
- Department of Chemistry, the University of Tennessee, Knoxville, TN 37996-1600, USA
| | - David C. Baker
- Department of Chemistry, the University of Tennessee, Knoxville, TN 37996-1600, USA
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Ciobanu M, Huang KT, Daguer JP, Barluenga S, Chaloin O, Schaeffer E, Mueller CG, Mitchell DA, Winssinger N. Selection of a synthetic glycan oligomer from a library of DNA-templated fragments against DC-SIGN and inhibition of HIV gp120 binding to dendritic cells. Chem Commun (Camb) 2011; 47:9321-3. [PMID: 21785785 DOI: 10.1039/c1cc13213j] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
We report the synthesis of a nucleic acid-encoded carbohydrate library, its combinatorial self-assembly into 37,485 pairs and a screen against DC-SIGN leading to the identification of consensus ligand motifs. A prototypical example from the selected pairs was shown to have enhanced binding. A dendrimer incorporating the selected motifs inhibited gp120's binding to dendritic cells with higher efficiency than mannan.
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Affiliation(s)
- Mihai Ciobanu
- Institut de Science et Ingenierie Supramoleculaires (ISIS), Université de Strasbourg-CNRS, 8 allee Gaspard Monge, 67000 Strasbourg, France
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76
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Gatard S, Liang L, Salmon L, Ruiz J, Astruc D, Bouquillon S. Water-soluble glycodendrimers: synthesis and stabilization of catalytically active Pd and Pt nanoparticles. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.02.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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77
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Ballut S, Naud-Martin D, Loock B, Maillard P. A Strategy for the Targeting of Photosensitizers. Synthesis, Characterization, and Photobiological Property of Porphyrins Bearing Glycodendrimeric Moieties. J Org Chem 2011; 76:2010-28. [DOI: 10.1021/jo102185d] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Séverine Ballut
- UMR 176 CNRS/Institut Curie, Institut Curie, Bât 110, University Paris-Sud, F-91405 Orsay, France
- Institut Curie, Section de Recherches, Centre Universitaire, University Paris-Sud, F-91405 Orsay, France
| | - Delphine Naud-Martin
- UMR 176 CNRS/Institut Curie, Institut Curie, Bât 110, University Paris-Sud, F-91405 Orsay, France
- Institut Curie, Section de Recherches, Centre Universitaire, University Paris-Sud, F-91405 Orsay, France
| | - Bernard Loock
- UMR 176 CNRS/Institut Curie, Institut Curie, Bât 110, University Paris-Sud, F-91405 Orsay, France
- Institut Curie, Section de Recherches, Centre Universitaire, University Paris-Sud, F-91405 Orsay, France
- GDR CNRS 3049 “Médicaments Photoactivables-Photochimiothérapie (PHOTOMED)”, France
| | - Philippe Maillard
- UMR 176 CNRS/Institut Curie, Institut Curie, Bât 110, University Paris-Sud, F-91405 Orsay, France
- Institut Curie, Section de Recherches, Centre Universitaire, University Paris-Sud, F-91405 Orsay, France
- GDR CNRS 3049 “Médicaments Photoactivables-Photochimiothérapie (PHOTOMED)”, France
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78
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Cecioni S, Oerthel V, Iehl J, Holler M, Goyard D, Praly JP, Imberty A, Nierengarten JF, Vidal S. Synthesis of dodecavalent fullerene-based glycoclusters and evaluation of their binding properties towards a bacterial lectin. Chemistry 2011; 17:3252-61. [PMID: 21328503 DOI: 10.1002/chem.201003258] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Indexed: 02/03/2023]
Abstract
Multivalency is playing a major role in biological processes and particularly in lectin-carbohydrate interactions. The design of high-affinity ligands of lectins should provide molecules capable of interfering with these biological processes and potentially inhibit bacterial or viral infections. Azide-alkyne "click" chemistry was applied to the synthesis of dodecavalent fullerene-based glycoclusters. The conjugation could be efficiently performed from alkyne or azide functions on either partners (i.e. hexakis-fullerene adduct or glycoside). PA-IL is a bacterial lectin from the opportunistic pathogen Pseudomonas aeruginosa and is involved in the recognition of glycoconjugates on human tissues. The glycoclusters obtained were evaluated as ligands of PA-IL and for their potential for competing with its binding to glycosylated surfaces. The affinities measured by hemagglutination inhibition assay (HIA), enzyme-linked lectin assay (ELLA), and surface plasmon resonance (SPR) displayed a significant "glycoside cluster effect" with up to a 12,000-fold increase in binding when comparing a monovalent carbohydrate reference probe with a dodecavalent fullerene-based glycocluster, albeit with some differences depending on the analytical technique.
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Affiliation(s)
- Samy Cecioni
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Laboratoire de Chimie, Organique 2-Glycochimie, UMR 5246, Université Claude Bernard Lyon 1 and CNRS, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne, France
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79
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Roytman R, Adler-Abramovich L, Kumar KSA, Kuan TC, Lin CC, Gazit E, Brik A. Exploring the self-assembly of glycopeptides using a diphenylalanine scaffold. Org Biomol Chem 2011; 9:5755-61. [DOI: 10.1039/c1ob05071k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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80
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Chabre YM, Brisebois PP, Abbassi L, Kerr SC, Fahy JV, Marcotte I, Roy R. Hexaphenylbenzene as a rigid template for the straightforward syntheses of "star-shaped" glycodendrimers. J Org Chem 2010; 76:724-7. [PMID: 21190367 DOI: 10.1021/jo102215y] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Original glycodendrimers emanating from propargylated hexaphenylbenzene cores and containing up to 54 peripheral sugar ligands have been synthesized by Cu(I)-catalyzed [1,3]-dipolar cycloadditions using both convergent and divergent approaches.
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Affiliation(s)
- Yoann M Chabre
- Department of Chemistry, Université du Québec à Montréal, P.O. Box 8888, Succ. Centre-Ville Montréal, QC, Canada H3C 3P8
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81
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Sánchez-Navarro M, Muñoz A, Illescas BM, Rojo J, Martín N. [60]Fullerene as multivalent scaffold: efficient molecular recognition of globular glycofullerenes by concanavalin A. Chemistry 2010; 17:766-9. [PMID: 21226088 DOI: 10.1002/chem.201002816] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Indexed: 11/07/2022]
Affiliation(s)
- Macarena Sánchez-Navarro
- Departamento de Química Orgánica, Facultad de Química, Universidad Complutense de Madrid, 28040 Madrid, Spain
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82
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Adar L, Shamay Y, Journo G, David A. Pro-apoptotic peptide-polymer conjugates to induce mitochondrial-dependent cell death. POLYM ADVAN TECHNOL 2010. [DOI: 10.1002/pat.1829] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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83
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Zhang XR, Li YX, Chu SD, Ding N, Li CX, Guan HS. Synthesis of Glutamic Acid-based Cluster Galactosides and their Binding Affinities with Liver Cells. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.20040220518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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84
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Zhang Y, Li Q, Rodriguez LG, Gildersleeve JC. An array-based method to identify multivalent inhibitors. J Am Chem Soc 2010; 132:9653-62. [PMID: 20583754 PMCID: PMC2923827 DOI: 10.1021/ja100608w] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Carbohydrate-protein interactions play a critical role in a variety of biological processes, and agonists/antagonists of these interactions are useful as biological probes and therapeutic agents. Most carbohydrate-binding proteins achieve tight binding through formation of a multivalent complex. Therefore, both ligand structure and presentation contribute to recognition. Since there are many potential combinations of structure, spacing, and orientation to consider and the optimal one cannot be predicted, high-throughput approaches for analyzing carbohydrate-protein interactions and designing inhibitors are appealing. In this report, we develop a strategy to vary neoglycoprotein density on a surface of a glycan array. This feature of presentation was combined with variations in glycan structure and glycan density to produce an array with approximately 600 combinations of glycan structure and presentation. The unique array platform allows one to distinguish between different types of multivalent complexes on the array surface. To illustrate the advantages of this format, it was used to rapidly identify multivalent probes for various lectins. The new array was first tested with several plant lectins, including concanavalin A (conA), Vicia villosa isolectin B4 (VVL-B(4)), and Ricinus communis agglutinin (RCA120). Next, it was used to rapidly identify potent multivalent inhibitors of Pseudomonas aeruginosa lectin I (PA-IL), a key protein involved in opportunistic infections of P. aeruginosa , and mouse macrophage galactose-type lectin (mMGL-2), a protein expressed on antigen presenting cells that may be useful as a vaccine targeting receptor. An advantage of the approach is that structural information about the lectin/receptor is not required to obtain a multivalent inhibitor/probe.
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Affiliation(s)
- Yalong Zhang
- Chemical Biology Laboratory, National Cancer Institute, 376 Boyles Street, Building 376, Frederick, Maryland, 21702
| | - Qian Li
- Chemical Biology Laboratory, National Cancer Institute, 376 Boyles Street, Building 376, Frederick, Maryland, 21702
| | - Luis G. Rodriguez
- Optical Microscopy and Analysis Laboratory, SAIC-Frederick, Inc., Advanced Technology Program, NCI-Frederick, Frederick, Maryland, 21702
| | - Jeffrey C. Gildersleeve
- Chemical Biology Laboratory, National Cancer Institute, 376 Boyles Street, Building 376, Frederick, Maryland, 21702
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85
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Nierengarten JF, Iehl J, Oerthel V, Holler M, Illescas BM, Muñoz A, Martín N, Rojo J, Sánchez-Navarro M, Cecioni S, Vidal S, Buffet K, Durka M, Vincent SP. Fullerene sugar balls. Chem Commun (Camb) 2010; 46:3860-2. [PMID: 20414495 DOI: 10.1039/c0cc00034e] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fullerene hexakis-adducts bearing 12 peripheral carbohydrate moieties have been prepared by grafting sugar derivatives onto the fullerene core through the copper mediated Huisgen 1,3-dipolar cycloaddition of azides and alkynes.
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Affiliation(s)
- Jean-François Nierengarten
- Laboratoire de Chimie des Matériaux Moléculaires, Université de Strasbourg et CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux (ECPM), 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
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86
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Synthesis of a family of amphiphilic glycopolymers via controlled ring-opening polymerization of functionalized cyclic carbonates and their application in drug delivery. Biomaterials 2010; 31:2637-45. [DOI: 10.1016/j.biomaterials.2009.12.022] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2009] [Accepted: 12/07/2009] [Indexed: 11/17/2022]
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87
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Agarwal A, Asthana A, Gupta U, Jain NK. Tumour and dendrimers: a review on drug delivery aspects. J Pharm Pharmacol 2010; 60:671-88. [DOI: 10.1211/jpp.60.6.0001] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Abstract
Tumour is a morbid state, characterized by spontaneous outgrowth of an abnormal mass of cells. The evolution of tumours is random, disorganized, a condition of numerous mutations. The properties are biased and incompletely comprehended. It is a malignant or benign condition that encompasses its own rules of morphogenesis, an immortal state that elucidates different physiology. It is a pathological crisis that still haunts the minds of scientists, physicians and patients, a complete cure of which is still a dream to be realized. The unpredictable microenvironment of cancerous cells in all of its existing forms i.e. leukaemic cells, solid tumours and sarcomas is well documented. This phenomenon expressed by cancerous sites in the body poses various obstacles towards drug efficacy. Thus, it has become necessary to address briefly the issues relating to tumour physiology, its vasculature and angiogenesis. The information could provide insight towards the development of tumour-targeted drug delivery. The salient features regarding these have been discussed.
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Affiliation(s)
| | | | - Umesh Gupta
- Dr H. S. Gour University, Sagar, M.P., India
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88
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Gajbhiye V, Palanirajan VK, Tekade RK, Jain NK. Dendrimers as therapeutic agents: a systematic review. J Pharm Pharmacol 2010. [PMID: 19703342 DOI: 10.1211/jpp.61.08.0002] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Abstract
Objectives
Dendrimers by virtue of their therapeutic value have recently generated enormous interest among biomedical scientists. This review describes the therapeutic prospects of the dendrimer system.
Key findings
Their bioactivity suggests them to be promising therapeutic agents, especially in wound healing, bone mineralisation, cartilage formation and tissue repair, and in topical treatments to prevent HIV transmission. Findings also demonstrate their potential as anti-prion, anti-Alzheimer's, anticoagulant, antidote, anti-inflammatory and anticancer agents. One of the dendrimer-based formulations with activity against herpes simplex virus (VivaGel from Starpharma) has successfully completed phase I clinical trials and is expected to be available on the market soon.
Summary
All reports cited in this review demonstrate the use of dendrimers as medical therapeutics in different ailments. The review focuses on the current state of therapeutic potential of the dendrimer system.
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Affiliation(s)
- Virendra Gajbhiye
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr Hari Singh Gour University, Sagar, India
| | - Vijayaraj K Palanirajan
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr Hari Singh Gour University, Sagar, India
| | - Rakesh K Tekade
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr Hari Singh Gour University, Sagar, India
| | - Narendra K Jain
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr Hari Singh Gour University, Sagar, India
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89
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Bogdan N, Vetrone F, Roy R, Capobianco JA. Carbohydrate-coated lanthanide-doped upconverting nanoparticles for lectin recognition. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/c0jm01617a] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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90
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Molecular design of N-linked tetravalent glycosides bearing N-acetylglucosamine, N,N′-diacetylchitobiose and N-acetyllactosamine: Analysis of cross-linking activities with WGA and ECA lectins. Bioorg Med Chem 2010; 18:621-9. [DOI: 10.1016/j.bmc.2009.12.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Revised: 12/01/2009] [Accepted: 12/02/2009] [Indexed: 11/19/2022]
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91
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Munoz EM, Correa J, Fernandez-Megia E, Riguera R. Probing the Relevance of Lectin Clustering for the Reliable Evaluation of Multivalent Carbohydrate Recognition. J Am Chem Soc 2009; 131:17765-7. [DOI: 10.1021/ja9074826] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eva Maria Munoz
- Departamento de Química Orgánica, Facultad de Química, and Unidad de RMN de Biomoléculas Asociada al CSIC, Universidad de Santiago de Compostela, Avda. de las Ciencias S.N. 15782 Santiago de Compostela, Spain
| | - Juan Correa
- Departamento de Química Orgánica, Facultad de Química, and Unidad de RMN de Biomoléculas Asociada al CSIC, Universidad de Santiago de Compostela, Avda. de las Ciencias S.N. 15782 Santiago de Compostela, Spain
| | - Eduardo Fernandez-Megia
- Departamento de Química Orgánica, Facultad de Química, and Unidad de RMN de Biomoléculas Asociada al CSIC, Universidad de Santiago de Compostela, Avda. de las Ciencias S.N. 15782 Santiago de Compostela, Spain
| | - Ricardo Riguera
- Departamento de Química Orgánica, Facultad de Química, and Unidad de RMN de Biomoléculas Asociada al CSIC, Universidad de Santiago de Compostela, Avda. de las Ciencias S.N. 15782 Santiago de Compostela, Spain
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92
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Shamay Y, Paulin D, Ashkenasy G, David A. E-selectin binding peptide–polymer–drug conjugates and their selective cytotoxicity against vascular endothelial cells. Biomaterials 2009; 30:6460-8. [DOI: 10.1016/j.biomaterials.2009.08.013] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Accepted: 08/06/2009] [Indexed: 01/12/2023]
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93
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Stiriba SE, Frey H, Haag R. Dendritic polymers in biomedical applications: from potential to clinical use in diagnostics and therapy. Angew Chem Int Ed Engl 2009; 41:1329-34. [PMID: 19750755 DOI: 10.1002/1521-3773(20020415)41:8<1329::aid-anie1329>3.0.co;2-p] [Citation(s) in RCA: 567] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Dendrimers are characterized by a combination of high end-group functionality and a compact, precisely defined molecular structure. These characteristics can be used in biomedical applications, for example, for the amplification or multiplication of effects on a molecular level, or to create extremely high local concentrations of drugs, molecular labels, or probe moieties. A brief summary of the current state of the art in the field is given, and focuses on the application of dendrimers both in diagnostics as well as in therapy. In diagnostics, dendrimers that bear GdIII complexes are used as contrast agents in magnetic resonance imaging. DNA dendrimers have potential for routine use in high-throughput functional genomic analysis, as well as for DNA biosensors. Dendrimers are also being investigated for therapeutics, for example, as carriers for controlled drug delivery, in gene transfection, as well as in boron neutron-capture therapy. Furthermore, the antimicrobial activity of dendrimers has been studied.
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Affiliation(s)
- Salah-Eddine Stiriba
- Institut für Makromolekulare Chemie, und Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Stefan-Meier-Strasse 21/31, 79104 Freiburg, Germany
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94
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Oyelaran O, Gildersleeve JC. Glycan arrays: recent advances and future challenges. Curr Opin Chem Biol 2009; 13:406-13. [PMID: 19625207 PMCID: PMC2749919 DOI: 10.1016/j.cbpa.2009.06.021] [Citation(s) in RCA: 185] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Accepted: 06/22/2009] [Indexed: 12/14/2022]
Abstract
Carbohydrate arrays, also referred to as glycan arrays, are composed of various oligosaccharides and/or polysaccharides immobilized on a solid support in a spatially defined arrangement. This technology provides a powerful, high-throughput approach to examining carbohydrate-macromolecule interactions, and glycan arrays have had a significant impact on the field of glycobiology. This review focuses on recent advances in glycan array technology, limitations, and opportunities for improvement. In particular, new methods for the production of natural glycan arrays and chemoenzymatic approaches are greatly expanding the diversity of structures on arrays. Since multivalent complex formation is generally required to achieve tight binding, methods to evaluate and modulate presentation are vital for enhancing the capabilities of this technology.
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Affiliation(s)
- Oyindasola Oyelaran
- Laboratory of Medicinal Chemistry, Center for Cancer Research, NCI, 376 Boyles Street, Frederick, MD 21702
| | - Jeffrey C. Gildersleeve
- Laboratory of Medicinal Chemistry, Center for Cancer Research, NCI, 376 Boyles Street, Frederick, MD 21702
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95
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Oyelaran O, Li Q, Farnsworth D, Gildersleeve JC. Microarrays with varying carbohydrate density reveal distinct subpopulations of serum antibodies. J Proteome Res 2009; 8:3529-38. [PMID: 19366269 DOI: 10.1021/pr9002245] [Citation(s) in RCA: 133] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Antigen arrays have become important tools for profiling complex mixtures of proteins such as serum antibodies. These arrays can be used to better understand immune responses, discover new biomarkers, and guide the development of vaccines. Nevertheless, they are not perfect and improved array designs would enhance the information derived from this technology. In this study, we describe and evaluate a strategy for varying antigen density on an array and then use the array to study binding of lectins, monoclonal antibodies, and serum antibodies. To vary density, neoglycoproteins containing differing amounts of carbohydrate were synthesized and used to make a carbohydrate microarray with variations in both structure and density. We demonstrate that this method provides variations in density on the array surface within a range that is relevant for biological recognition events. The array was used to evaluate density dependent binding properties of three lectins (Vicia villosa lectin B4, Helix pomatia agglutinin, and soybean agglutinin) and three monoclonal antibodies (HBTn-1, B1.1, and Bric111) that bind the tumor-associated Tn antigen. In addition, serum antibodies were profiled from 30 healthy donors. The results show that variations in antigen density are required to detect the full spectrum of antibodies that bind a particular antigen and can be used to reveal differences in antibody populations between individuals that are not detectable using a single antigen density.
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Affiliation(s)
- Oyindasola Oyelaran
- Laboratory of Medicinal Chemistry, National Cancer Institute, 376 Boyles Street, Building 376, Frederick, Maryland 21702, USA
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96
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Comegna D, De Riccardis F. An efficient modular approach for the assembly of s-linked glycopeptoids. Org Lett 2009; 11:3898-901. [PMID: 19655735 DOI: 10.1021/ol901524k] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A short and convenient methodology for the synthesis of S-glycosylated peptoid models is described. The thioglycosylated building blocks were prepared from proper peracetylated sugars via glycosyl iodides in a one-pot fashion and directly employed in a submonomer solid-phase stategy.
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Affiliation(s)
- Daniela Comegna
- Dipartimento di Chimica, Università di Salerno, Via Ponte don Melillo, 84084 Fisciano (SA), Italy.
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97
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Shamay Y, Paulin D, Ashkenasy G, David A. Multivalent Display of Quinic Acid Based Ligands for Targeting E-Selectin Expressing Cells. J Med Chem 2009; 52:5906-15. [DOI: 10.1021/jm900308r] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yosi Shamay
- Department of Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Denise Paulin
- Université Pierre et Marie Curie, Case Courrier 256, 7 Quai St. Bernard, 75252 Paris Cedex 5, France
| | - Gonen Ashkenasy
- Department of Chemistry, Faculty of Natural Sciences, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Ayelet David
- Department of Pharmacology, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
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98
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Xu J, Boyer C, Bulmus V, Davis TP. Synthesis of dendritic carbohydrate end-functional polymers via RAFT: Versatile multi-functional precursors for bioconjugations. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23482] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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99
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Jiménez-Barbero J, L. Asensio J, Cuevas G, Canales A, Fernández-Alonso MC, Javier Cañada F. Conformational insights on the molecular recognition processes of carbohydrate molecules by proteins and enzymes: A 3D view by using NMR. BIOCATAL BIOTRANSFOR 2009. [DOI: 10.1080/10242420600598103] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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100
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Abstract
Supramolecular chemistry has expanded dramatically in recent years both in terms of potential applications and in its relevance to analogous biological systems. The formation and function of supramolecular complexes occur through a multiplicity of often difficult to differentiate noncovalent forces. The aim of this Review is to describe the crucial interaction mechanisms in context, and thus classify the entire subject. In most cases, organic host-guest complexes have been selected as examples, but biologically relevant problems are also considered. An understanding and quantification of intermolecular interactions is of importance both for the rational planning of new supramolecular systems, including intelligent materials, as well as for developing new biologically active agents.
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Affiliation(s)
- Hans-Jörg Schneider
- Organische Chemie, Universität des Saarlandes, 66041 Saarbrücken, Deutschland.
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