51
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Park H, Walta S, Rosencrantz RR, Körner A, Schulte C, Elling L, Richtering W, Böker A. Micelles from self-assembled double-hydrophilic PHEMA-glycopolymer-diblock copolymers as multivalent scaffolds for lectin binding. Polym Chem 2016. [DOI: 10.1039/c5py00797f] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We introduce a novel double-hydrophilic hydroxyethylmethacrylate (HEMA) based diblock glycopolymer which self-assembles into homogeneous spherical micellar structures in water.
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Affiliation(s)
- H. Park
- DWI – Leibniz Institut für Interaktive Materialien e.V
- Lehrstuhl für Makromolekulare Materialien und Oberflächen
- Aachen
- Germany
| | - S. Walta
- Institute of Physical Chemistry
- RWTH Aachen University
- JARA – Soft Matter Science
- D-52074 Aachen
- Germany
| | - R. R. Rosencrantz
- Laboratory for Biomaterials
- Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - A. Körner
- DWI – Leibniz Institut für Interaktive Materialien e.V
- Lehrstuhl für Makromolekulare Materialien und Oberflächen
- Aachen
- Germany
| | - C. Schulte
- Fraunhofer-Institut für Angewandte Polymerforschung
- Lehrstuhl für Polymermaterialien und Polymertechnologie
- Universität Potsdam
- 14476 Potsdam-Golm
- Germany
| | - L. Elling
- Laboratory for Biomaterials
- Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - W. Richtering
- Institute of Physical Chemistry
- RWTH Aachen University
- JARA – Soft Matter Science
- D-52074 Aachen
- Germany
| | - A. Böker
- DWI – Leibniz Institut für Interaktive Materialien e.V
- Lehrstuhl für Makromolekulare Materialien und Oberflächen
- Aachen
- Germany
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52
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Müller C, Despras G, Lindhorst TK. Organizing multivalency in carbohydrate recognition. Chem Soc Rev 2016; 45:3275-302. [DOI: 10.1039/c6cs00165c] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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53
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KARAÇALI S. Human embryonic stem cell N-glycan features relevant to pluripotency. Turk J Biol 2016. [DOI: 10.3906/biy-1509-57] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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54
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Wu G, Lu ZH, André S, Gabius HJ, Ledeen RW. Functional interplay between ganglioside GM1 and cross-linking galectin-1 induces axon-like neuritogenesis via integrin-based signaling and TRPC5-dependent Ca²⁺ influx. J Neurochem 2015; 136:550-63. [PMID: 26526326 PMCID: PMC4720552 DOI: 10.1111/jnc.13418] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 09/24/2015] [Accepted: 10/08/2015] [Indexed: 12/04/2022]
Abstract
Axon‐like neuritogenesis in neuroblastoma (NG108‐15) cells and primary cerebellar granular neurons is furthered by the presence of ganglioside GM1. We describe here that galectin‐1 (Gal‐1), a homobivalent endogenous lectin, is an effector by cross‐linking the ganglioside and its associated glycoprotein α5β1‐integrin. The thereby triggered signaling cascade involves autophosphorylation of focal adhesion kinase and activation of phospholipase Cγ and phosphoinositide‐3 kinase. This leads to a transient increase in the intracellular Ca2+ concentration by opening of TRPC5 channels, which belong to the signal transduction‐gated cation channels. Controls with GM1‐defective cells (NG‐CR72 and neurons from ganglio‐series KO mice) were retarded in axonal growth, underscoring the relevance of GM1 as functional counterreceptor for Gal‐1. The lectin's presence was detected in the NG108‐15 cells, suggesting an autocrine mechanism of action, and in astrocytes in situ. Gal‐1, as cross‐linking lectin, can thus translate metabolic conversion of ganglioside GD1a to GM1 by neuraminidase action into axon growth.
Galectin‐1 (Gal‐1) was shown an effector of axonogenesis in cerebellar granule neurons (CGNs) and NG108‐15 cells by cross‐linking GM1 ganglioside and its associated glycoprotein α5β1‐integrin. The resulting signaling led to a transient increase in intracellular Ca2+ by opening TRPC5 channels. CGNs deficient in GM1 showed retarded axonogenesis, underscoring the relevance of GM1 as functional counterreceptor for Gal‐1 in this process. This Gal‐1/GM1‐induced signaling was manifest only at the earliest, initiating stage of axon development.
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Affiliation(s)
- Gusheng Wu
- Department of Pharmacology, Physiology & Neurosciences, Rutgers-The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
| | - Zi-Hua Lu
- Department of Pharmacology, Physiology & Neurosciences, Rutgers-The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
| | - Sabine André
- Institut für Physiologische Chemie, Tierärztliche Fakultät, Ludwig-Maximilians-Universität, München, Germany
| | - Hans-Joachim Gabius
- Institut für Physiologische Chemie, Tierärztliche Fakultät, Ludwig-Maximilians-Universität, München, Germany
| | - Robert W Ledeen
- Department of Pharmacology, Physiology & Neurosciences, Rutgers-The State University of New Jersey, New Jersey Medical School, Newark, New Jersey, USA
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55
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Ribeiro JP, Diercks T, Jiménez-Barbero J, André S, Gabius HJ, Cañada FJ. Fluorinated Carbohydrates as Lectin Ligands: (19)F-Based Direct STD Monitoring for Detection of Anomeric Selectivity. Biomolecules 2015; 5:3177-92. [PMID: 26580665 PMCID: PMC4693274 DOI: 10.3390/biom5043177] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 11/02/2015] [Accepted: 11/04/2015] [Indexed: 12/29/2022] Open
Abstract
The characterization of the binding of reducing carbohydrates present as mixtures of anomers in solution to a sugar recepor (lectin) poses severe difficulties. In this situation, NMR spectroscopy enables the observation of signals for each anomer in the mixture by applying approaches based on ligand observation. Saturation transfer difference (STD) NMR allows fast and efficient screening of compound mixtures for reactivity to a receptor. Owing to the exceptionally favorable properties of 19F in NMR spectroscopy and the often complex 1H spectra of carbohydrates, 19F-containing sugars have the potential to be turned into versatile sensors for recognition. Extending the recently established 1H → 1H STDre19F-NMR technique, we here demonstrate its applicability to measure anomeric selectivity of binding in a model system using the plant lectin concanavalin A (ConA) and 2-deoxy-2-fluoro-d-mannose. Indeed, it is also possible to account for the mutual inhibition between the anomers on binding to the lectin by means of a kinetic model. The monitoring of 19F-NMR signal perturbation disclosed the relative activities of the anomers in solution and thus enabled the calculation of their binding affinity towards ConA. The obtained data show a preference for the α anomer that increases with temperature. This experimental approach can be extended to others systems of biomedical interest by testing human lectins with suitably tailored glycan derivatives.
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Affiliation(s)
- João P Ribeiro
- Centre de Recherches sur les Macromolécules Végétales, UPR5301, CNRS-Université Grenoble Alpes, BP53, 38041 Grenoble cédex 09, France.
| | - Tammo Diercks
- CIC bioGUNE, Bizkaia Technological Park, Building 800, 48160 Derio, Spain.
| | - Jesús Jiménez-Barbero
- CIC bioGUNE, Bizkaia Technological Park, Building 800, 48160 Derio, Spain.
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain.
| | - Sabine André
- Institut für Physiologische Chemie, Tierärztliche Fakultät der Ludwig-Maximilians-Universität, Veterinärstr. 13, 80539 München, Germany.
| | - Hans-Joachim Gabius
- Institut für Physiologische Chemie, Tierärztliche Fakultät der Ludwig-Maximilians-Universität, Veterinärstr. 13, 80539 München, Germany.
| | - Francisco Javier Cañada
- Chemical and Physical Biology, Centro de Investigaciones Biológicas, CIB-CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain.
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56
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Ng TB, Chan YS, Ng CCW, Wong JH. Purification and Characterization of a Lectin from Green Split Peas (Pisum sativum). Appl Biochem Biotechnol 2015; 177:1374-85. [PMID: 26304129 DOI: 10.1007/s12010-015-1821-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 08/17/2015] [Indexed: 10/23/2022]
Abstract
Lectins have captured the attention of a large number of researchers on account of their various exploitable activities, including antitumor, immunomodulatory, antifungal, as well as HIV reverse transcriptase inhibitory activities. A mannose/glucose-specific lectin was isolated from green split peas (a variety of Pisum sativum) and characterized. The purification step involved anion-exchange chromatography on a DEAE-cellulose column, cation-exchange chromatography on an SP-Sepharose column, and gel filtration by fast protein liquid chromatography (FPLC) on Superdex 200. The purified lectin had a native molecular mass of around 50 kDa as determined by size exclusion chromatography. It appeared as a heterotetramer, composed of two distinct polypeptide bands with a molecular mass of 6 and 19 kDa, respectively, in sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). The N-terminal sequence of green split pea lectin shows some degree of homology compared to lectins from other legume species. Its hemagglutinating activity was inhibited by glucose, mannose, and sucrose, and attenuated at pH values higher than 12 or lower than 3. Hemagglutinating activity was preserved at temperatures lower than 80 °C. The lectin did not show antifungal activity toward fungi including Fusarium oxysporum, Botrytis cinerea, and Mycosphaerella arachidicola. Green split pea lectin showed a mitogenic effect toward murine splenocytes and could inhibit the activity of HIV-1 reverse transcriptase.
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Affiliation(s)
- Tzi Bun Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
| | - Yau Sang Chan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Charlene Cheuk Wing Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Jack Ho Wong
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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57
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Entomotoxic and nematotoxic lectins and protease inhibitors from fungal fruiting bodies. Appl Microbiol Biotechnol 2015; 100:91-111. [DOI: 10.1007/s00253-015-7075-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 10/04/2015] [Accepted: 10/11/2015] [Indexed: 01/26/2023]
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58
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Kaltner H, Singh T, Manning JC, Raschta AS, André S, Sinowatz F, Gabius HJ. Network monitoring of adhesion/growth-regulatory galectins: localization of the five canonical chicken proteins in embryonic and maturing bone and cartilage and their introduction as histochemical tools. Anat Rec (Hoboken) 2015; 298:2051-70. [PMID: 26340709 DOI: 10.1002/ar.23265] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 06/26/2015] [Accepted: 07/08/2015] [Indexed: 01/15/2023]
Abstract
Divergence from an ancestral gene leads to a family of homologous proteins. Whether they are physiologically distinct, similar, or even redundant is an open question in each case. Defining profiles of tissue localization is a step toward giving diversity a functional meaning. Due to the significance of endogenous sugar receptors (lectins) as effectors for a wide range of cellular activities we have focused on galectins. The comparatively low level of network complexity constituted by only five canonical proteins makes chicken galectins (CGs) an attractive choice to perform comprehensive analysis, here studied on bone/cartilage as organ system. Galectin expression was monitored by Western blotting and immunohistochemistry using non-cross-reactive antibodies. Overall, three galectins (CG-1B, CG-3, CG-8) were present with individual expression patterns, one was found exclusively in the mesenchyme (CG-1A), the fifth (CG-2) not being detectable. The documented extents of separation are a sign for functional divergence; in cases with overlapping stainings, as for example in the osteoprogenitor layer or periosteum, cooperation may also be possible. Recombinant production enabled the introduction of the endogenous lectins as tools for binding-site localization. Their testing revealed developmental regulation and cell-type-specific staining. Of relevance for research on mammalian galectins, this study illustrates that certain cell types can express more than one galectin, letting functional interrelationships appear likely. Thus, complete network analysis irrespective of its degree of complexity is mandatory.
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Affiliation(s)
- Herbert Kaltner
- Faculty of Veterinary Medicine, Institute of Physiological Chemistry, Ludwig-Maximilians-University Munich, 80539, Munich, Germany
| | - Tanuja Singh
- Faculty of Veterinary Medicine, Institute of Physiological Chemistry, Ludwig-Maximilians-University Munich, 80539, Munich, Germany
| | - Joachim C Manning
- Faculty of Veterinary Medicine, Institute of Physiological Chemistry, Ludwig-Maximilians-University Munich, 80539, Munich, Germany
| | - Anne-Sarah Raschta
- Faculty of Veterinary Medicine, Institute of Physiological Chemistry, Ludwig-Maximilians-University Munich, 80539, Munich, Germany
| | - Sabine André
- Faculty of Veterinary Medicine, Institute of Physiological Chemistry, Ludwig-Maximilians-University Munich, 80539, Munich, Germany
| | - Fred Sinowatz
- Faculty of Veterinary Medicine, Institute of Anatomy, Histology and Embryology, Ludwig-Maximilians-University Munich, 80539, Munich, Germany
| | - Hans-Joachim Gabius
- Faculty of Veterinary Medicine, Institute of Physiological Chemistry, Ludwig-Maximilians-University Munich, 80539, Munich, Germany
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59
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Swanson MD, Boudreaux DM, Salmon L, Chugh J, Winter HC, Meagher JL, André S, Murphy PV, Oscarson S, Roy R, King S, Kaplan MH, Goldstein IJ, Tarbet EB, Hurst BL, Smee DF, de la Fuente C, Hoffmann HH, Xue Y, Rice CM, Schols D, Garcia JV, Stuckey JA, Gabius HJ, Al-Hashimi HM, Markovitz DM. Engineering a therapeutic lectin by uncoupling mitogenicity from antiviral activity. Cell 2015; 163:746-58. [PMID: 26496612 DOI: 10.1016/j.cell.2015.09.056] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 06/05/2015] [Accepted: 09/29/2015] [Indexed: 10/22/2022]
Abstract
A key effector route of the Sugar Code involves lectins that exert crucial regulatory controls by targeting distinct cellular glycans. We demonstrate that a single amino-acid substitution in a banana lectin, replacing histidine 84 with a threonine, significantly reduces its mitogenicity, while preserving its broad-spectrum antiviral potency. X-ray crystallography, NMR spectroscopy, and glycocluster assays reveal that loss of mitogenicity is strongly correlated with loss of pi-pi stacking between aromatic amino acids H84 and Y83, which removes a wall separating two carbohydrate binding sites, thus diminishing multivalent interactions. On the other hand, monovalent interactions and antiviral activity are preserved by retaining other wild-type conformational features and possibly through unique contacts involving the T84 side chain. Through such fine-tuning, target selection and downstream effects of a lectin can be modulated so as to knock down one activity, while preserving another, thus providing tools for therapeutics and for understanding the Sugar Code.
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Affiliation(s)
- Michael D Swanson
- Division of Infectious Diseases, Department of Internal Medicine, Program in Immunology, University of Michigan, Ann Arbor, MI 48109, USA; Division of Infectious Diseases, Department of Medicine and UNC AIDS Center, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Daniel M Boudreaux
- Division of Infectious Diseases, Department of Internal Medicine, Program in Immunology, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biophysics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Loïc Salmon
- Department of Biophysics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jeetender Chugh
- Department of Biophysics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Harry C Winter
- Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Jennifer L Meagher
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sabine André
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| | - Paul V Murphy
- School of Chemistry, National University of Ireland, Galway, Ireland
| | - Stefan Oscarson
- Centre for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - René Roy
- Department of Chemistry, Université du Québec à Montréal, Montréal, Québec H3C 3P8, Canada
| | - Steven King
- Division of Infectious Diseases, Department of Internal Medicine, Program in Immunology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Mark H Kaplan
- Division of Infectious Diseases, Department of Internal Medicine, Program in Immunology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Irwin J Goldstein
- Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - E Bart Tarbet
- Institute for Antiviral Research, Utah State University, Logan, UT 84322, USA
| | - Brett L Hurst
- Institute for Antiviral Research, Utah State University, Logan, UT 84322, USA
| | - Donald F Smee
- Institute for Antiviral Research, Utah State University, Logan, UT 84322, USA
| | | | | | - Yi Xue
- Department of Biochemistry, Duke University, Durham, NC 27710, USA
| | | | - Dominique Schols
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, University of Leuven, 3000 Leuven, Belgium
| | - J Victor Garcia
- Division of Infectious Diseases, Department of Medicine and UNC AIDS Center, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Jeanne A Stuckey
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Hans-Joachim Gabius
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| | - Hashim M Al-Hashimi
- Department of Biophysics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Biochemistry, Duke University, Durham, NC 27710, USA.
| | - David M Markovitz
- Division of Infectious Diseases, Department of Internal Medicine, Program in Immunology, University of Michigan, Ann Arbor, MI 48109, USA.
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60
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Zhang S, Xiao Q, Sherman SE, Muncan A, Ramos Vicente ADM, Wang Z, Hammer DA, Williams D, Chen Y, Pochan DJ, Vértesy S, André S, Klein ML, Gabius HJ, Percec V. Glycodendrimersomes from Sequence-Defined Janus Glycodendrimers Reveal High Activity and Sensor Capacity for the Agglutination by Natural Variants of Human Lectins. J Am Chem Soc 2015; 137:13334-44. [DOI: 10.1021/jacs.5b08844] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shaodong Zhang
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Qi Xiao
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Samuel E. Sherman
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Adam Muncan
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Andrea D. M. Ramos Vicente
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Zhichun Wang
- Department
of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6391, United States
| | - Daniel A. Hammer
- Department
of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6391, United States
| | - Dewight Williams
- Electron
Microscopy Resource Laboratory, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6082, United States
| | - Yingchao Chen
- Department of Materials Science & Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Darrin J. Pochan
- Department of Materials Science & Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Sabine Vértesy
- Institute
of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinärstrasse 13, 80539 Munich, Germany
| | - Sabine André
- Institute
of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinärstrasse 13, 80539 Munich, Germany
| | - Michael L. Klein
- Institute
of Computational Molecular Science, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Hans-Joachim Gabius
- Institute
of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University, Veterinärstrasse 13, 80539 Munich, Germany
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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61
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Ardá A, Bosco R, Sastre J, Cañada FJ, André S, Gabius HJ, Richichi B, Jiménez-Barbero J, Nativi C. Structural Insights into the Binding of Sugar Receptors (Lectins) to a Synthetic Tricyclic Tn Mimetic and Its Glycopeptide Version. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500874] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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62
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Peržeľová V, Sabol F, Vasilenko T, Novotný M, Kováč I, Slezák M, Ďurkáč J, Hollý M, Pilátová M, Szabo P, Varinská L, Čriepoková Z, Kučera T, Kaltner H, André S, Gabius HJ, Mučaji P, Smetana K, Gál P. Pharmacological activation of estrogen receptors-α and -β differentially modulates keratinocyte differentiation with functional impact on wound healing. Int J Mol Med 2015; 37:21-8. [PMID: 26397183 PMCID: PMC4687436 DOI: 10.3892/ijmm.2015.2351] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/12/2015] [Indexed: 11/05/2022] Open
Abstract
Estrogen deprivation is considered responsible for many age-related processes, including poor wound healing. Guided by previous observations that estradiol accelerates re‑epithelialization through estrogen receptor (ER)‑β, in the present study, we examined whether selective ER agonists [4,4',4''-(4-propyl [1H] pyrazole-1,3,5-triyl)‑trisphenol (PPT), ER‑α agonist; 2,3-bis(4-hydroxyphenyl)-propionitrile (DPN), ER‑β agonist] affect the expression of basic proliferation and differentiation markers (Ki‑67, keratin‑10, ‑14 and ‑19, galectin‑1 and Sox‑2) of keratinocytes using HaCaT cells. In parallel, ovariectomized rats were treated daily with an ER modulator, and wound tissue was removed 21 days after wounding and routinely processed for basic histological analysis. Our results revealed that the HaCaT keratinocytes expressed both ER‑α and ‑β, and thus are well-suited for studying the effects of ER agonists on epidermal regeneration. The activation of ER‑α produced a protein expression pattern similar to that observed in the control culture, with a moderate expression of Ki‑67 being observed. However, the activation of ER‑β led to an increase in cell proliferation and keratin‑19 expression, as well as a decrease in galectin‑1 expression. Fittingly, in rat wounds treated with the ER‑β agonist (DPN), epidermal regeneration was accelerated. In the present study, we provide information on the mechanisms through which estrogens affect the expression patterns of selected markers, thus modulating keratinocyte proliferation and differentiation; in addition, we demonstrate that the pharmacological activation of ER-α and -β has a direct impact on wound healing.
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Affiliation(s)
- Vlasta Peržeľová
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University, Košice, Slovak Republic
| | - František Sabol
- Department of Heart Surgery, East‑Slovak Institute of Cardiovascular Diseases and Pavol Jozef Šafárik University, Košice, Slovak Republic
| | - Tomáš Vasilenko
- Department of Surgery, Košice‑Šaca Hospital and Pavol Jozef Šafárik University, Košice, Slovak Republic
| | - Martin Novotný
- Department for Biomedical Research, East‑Slovak Institute of Cardiovascular Diseases, Košice, Slovak Republic
| | - Ivan Kováč
- Department for Biomedical Research, East‑Slovak Institute of Cardiovascular Diseases, Košice, Slovak Republic
| | - Martin Slezák
- Department for Biomedical Research, East‑Slovak Institute of Cardiovascular Diseases, Košice, Slovak Republic
| | - Ján Ďurkáč
- Department for Biomedical Research, East‑Slovak Institute of Cardiovascular Diseases, Košice, Slovak Republic
| | - Martin Hollý
- Department for Biomedical Research, East‑Slovak Institute of Cardiovascular Diseases, Košice, Slovak Republic
| | - Martina Pilátová
- Department of Pathological Anatomy and Physiology, University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | - Pavol Szabo
- Institute of Anatomy, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Lenka Varinská
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University, Košice, Slovak Republic
| | - Zuzana Čriepoková
- Department of Pathological Anatomy and Physiology, University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | - Tomáš Kučera
- Institute of Histology and Embryology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Herbert Kaltner
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig‑Maximilians‑University Munich, Munich, Germany
| | - Sabine André
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig‑Maximilians‑University Munich, Munich, Germany
| | - Hans-Joachim Gabius
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig‑Maximilians‑University Munich, Munich, Germany
| | - Pavel Mučaji
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University, Bratislava, Slovak Republic
| | - Karel Smetana
- Institute of Anatomy, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Peter Gál
- Department of Pharmacology, Faculty of Medicine, Pavol Jozef Šafárik University, Košice, Slovak Republic
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63
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Unraveling functional significance of natural variations of a human galectin by glycodendrimersomes with programmable glycan surface. Proc Natl Acad Sci U S A 2015; 112:5585-90. [PMID: 25902539 DOI: 10.1073/pnas.1506220112] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Surface-presented glycans (complex carbohydrates) are docking sites for adhesion/growth-regulatory galectins within cell-cell/matrix interactions. Alteration of the linker length in human galectin-8 and single-site mutation (F19Y) are used herein to illustrate the potential of glycodendrimersomes with programmable glycan displays as a model system to reveal the functional impact of natural sequence variations in trans recognition. Extension of the linker length slightly reduces lectin capacity as agglutinin and slows down aggregate formation at low ligand surface density. The mutant protein is considerably less active as agglutinin and less sensitive to low-level ligand presentation. The present results suggest that mimicking glycan complexity and microdomain occurrence on the glycodendrimersome surface can provide key insights into mechanisms to accomplish natural selectivity and specificity of lectins in structural and topological terms.
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Abbassi L, Chabre YM, Kottari N, Arnold AA, André S, Josserand J, Gabius HJ, Roy R. Multifaceted glycodendrimers with programmable bioactivity through convergent, divergent, and accelerated approaches using polyfunctional cyclotriphosphazenes. Polym Chem 2015. [DOI: 10.1039/c5py01283j] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The cyclotriphosphazene-based platform facilitates versatile synthesis of glycodendrimers active as inhibitors of two biomedically relevant lectins.
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Affiliation(s)
- Leïla Abbassi
- Pharmaqam
- Department of Chemistry
- University du Québec à Montréal
- Montréal
- Canada
| | - Yoann M. Chabre
- Pharmaqam
- Department of Chemistry
- University du Québec à Montréal
- Montréal
- Canada
| | - Naresh Kottari
- Pharmaqam
- Department of Chemistry
- University du Québec à Montréal
- Montréal
- Canada
| | - Alexandre A. Arnold
- Pharmaqam
- Department of Chemistry
- University du Québec à Montréal
- Montréal
- Canada
| | - Sabine André
- Institute of Physiological Chemistry
- Faculty of Veterinary Medicine
- Ludwig-Maximilians-University
- 80539 Munich
- Germany
| | - Johan Josserand
- Pharmaqam
- Department of Chemistry
- University du Québec à Montréal
- Montréal
- Canada
| | - Hans-Joachim Gabius
- Institute of Physiological Chemistry
- Faculty of Veterinary Medicine
- Ludwig-Maximilians-University
- 80539 Munich
- Germany
| | - René Roy
- Pharmaqam
- Department of Chemistry
- University du Québec à Montréal
- Montréal
- Canada
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