1
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Chinoy ZS, Moremen KW, Friscourt F. A Clickable Bioorthogonal Sydnone‐Aglycone for the Facile Preparation of a Core 1
O
‐Glycan‐Array. European J Org Chem 2022; 2022:e202200271. [PMID: 36035814 PMCID: PMC9401066 DOI: 10.1002/ejoc.202200271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/13/2022] [Indexed: 11/12/2022]
Abstract
Protein‐O‐glycosylation has been shown to be essential for many biological processes. However, determining the exact relationship between O‐glycan structures and their biological activity remains challenging. Here we report that, unlike azides, sydnones can be incorporated as an aglycon into core 1 O‐glycans early‐on in their synthesis since it is compatible with carbohydrate chemistry and enzymatic glycosylations, allowing us to generate a small library of sydnone‐containing core 1 O‐glycans by chemoenzymatic synthesis. The sydnone‐aglycon was then employed for the facile preparation of an O‐glycan array, via bioorthogonal strain‐promoted sydnone‐alkyne cycloaddition click reaction, and in turn was utilized for the high‐throughput screening of O‐glycan‐lectin interactions. This sydnone‐aglycon, particularly adapted for O‐glycomics, is a valuable chemical tool that complements the limited technologies available for investigating O‐glycan structure‐activity relationships.
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Affiliation(s)
- Zoeisha S. Chinoy
- Institut Européen de Chimie et Biologie Université de Bordeaux 2 rue Robert Escarpit 33607 Pessac France
- Institut des Sciences Moléculaires CNRS UMR5255 33405 Talence France
| | - Kelley W. Moremen
- Department of Biochemistry and Molecular Biology University of Georgia Athens GA 30602 USA
- Complex Carbohydrate Research Center University of Georgia Athens GA 30602 USA
| | - Frédéric Friscourt
- Institut Européen de Chimie et Biologie Université de Bordeaux 2 rue Robert Escarpit 33607 Pessac France
- Institut des Sciences Moléculaires CNRS UMR5255 33405 Talence France
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2
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Gabius HJ, Cudic M, Diercks T, Kaltner H, Kopitz J, Mayo KH, Murphy PV, Oscarson S, Roy R, Schedlbauer A, Toegel S, Romero A. What is the Sugar Code? Chembiochem 2021; 23:e202100327. [PMID: 34496130 PMCID: PMC8901795 DOI: 10.1002/cbic.202100327] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/07/2021] [Indexed: 12/18/2022]
Abstract
A code is defined by the nature of the symbols, which are used to generate information‐storing combinations (e. g. oligo‐ and polymers). Like nucleic acids and proteins, oligo‐ and polysaccharides are ubiquitous, and they are a biochemical platform for establishing molecular messages. Of note, the letters of the sugar code system (third alphabet of life) excel in coding capacity by making an unsurpassed versatility for isomer (code word) formation possible by variability in anomery and linkage position of the glycosidic bond, ring size and branching. The enzymatic machinery for glycan biosynthesis (writers) realizes this enormous potential for building a large vocabulary. It includes possibilities for dynamic editing/erasing as known from nucleic acids and proteins. Matching the glycome diversity, a large panel of sugar receptors (lectins) has developed based on more than a dozen folds. Lectins ‘read’ the glycan‐encoded information. Hydrogen/coordination bonding and ionic pairing together with stacking and C−H/π‐interactions as well as modes of spatial glycan presentation underlie the selectivity and specificity of glycan‐lectin recognition. Modular design of lectins together with glycan display and the nature of the cognate glycoconjugate account for the large number of post‐binding events. They give an entry to the glycan vocabulary its functional, often context‐dependent meaning(s), hereby building the dictionary of the sugar code.
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Affiliation(s)
- Hans-Joachim Gabius
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Veterinärstr. 13, 80539, Munich, Germany
| | - Maré Cudic
- Department of Chemistry and Biochemistry, Charles E. Schmidt College of Science, Florida Atlantic University, 777 Glades Road, Boca Raton, Florida, 33431, USA
| | - Tammo Diercks
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801 A, 48160, Derio, Bizkaia, Spain
| | - Herbert Kaltner
- Institute of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, Veterinärstr. 13, 80539, Munich, Germany
| | - Jürgen Kopitz
- Institute of Pathology, Department of Applied Tumor Biology, Faculty of Medicine, Ruprecht-Karls-University Heidelberg, Im Neuenheimer Feld 224, 69120, Heidelberg, Germany
| | - Kevin H Mayo
- Department of Biochemistry, Molecular Biology & Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Paul V Murphy
- CÚRAM - SFI Research Centre for Medical Devices and the, School of Chemistry, National University of Ireland Galway, University Road, Galway, H91 TK33, Ireland
| | - Stefan Oscarson
- Centre for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - René Roy
- Département de Chimie et Biochimie, Université du Québec à Montréal, Case Postale 888, Succ. Centre-Ville Montréal, Québec, H3C 3P8, Canada
| | - Andreas Schedlbauer
- Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801 A, 48160, Derio, Bizkaia, Spain
| | - Stefan Toegel
- Karl Chiari Lab for Orthopaedic Biology, Department of Orthopedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria
| | - Antonio Romero
- Department of Structural and Chemical Biology, CIB Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
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3
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Rouzier F, Sillé R, Montiège O, Tessier A, Pipelier M, Dujardin G, Martel A, Nourry A, Guillarme S. Synthesis of Constrained
C
‐Glycosyl Amino Acid Derivatives Involving 1,3‐Dipolar Cycloaddition of Cyclic Nitrone as Key Step. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Florian Rouzier
- Institut des Molécules et Matériaux du Mans Le Mans Université and CNRS UMR 6283 Avenue O. Messiaen 72085 Le Mans cedex 9 France
| | - Rosanne Sillé
- Institut des Molécules et Matériaux du Mans Le Mans Université and CNRS UMR 6283 Avenue O. Messiaen 72085 Le Mans cedex 9 France
| | - Ophélie Montiège
- Institut des Molécules et Matériaux du Mans Le Mans Université and CNRS UMR 6283 Avenue O. Messiaen 72085 Le Mans cedex 9 France
| | - Arnaud Tessier
- CEISAM Université de Nantes and CNRS UMR 6220 44322 Nantes cedex 3 France
| | - Muriel Pipelier
- CEISAM Université de Nantes and CNRS UMR 6220 44322 Nantes cedex 3 France
| | - Gilles Dujardin
- Institut des Molécules et Matériaux du Mans Le Mans Université and CNRS UMR 6283 Avenue O. Messiaen 72085 Le Mans cedex 9 France
| | - Arnaud Martel
- Institut des Molécules et Matériaux du Mans Le Mans Université and CNRS UMR 6283 Avenue O. Messiaen 72085 Le Mans cedex 9 France
| | - Arnaud Nourry
- Institut des Molécules et Matériaux du Mans Le Mans Université and CNRS UMR 6283 Avenue O. Messiaen 72085 Le Mans cedex 9 France
| | - Stéphane Guillarme
- Institut des Molécules et Matériaux du Mans Le Mans Université and CNRS UMR 6283 Avenue O. Messiaen 72085 Le Mans cedex 9 France
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4
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Valverde P, Martínez JD, Cañada FJ, Ardá A, Jiménez-Barbero J. Molecular Recognition in C-Type Lectins: The Cases of DC-SIGN, Langerin, MGL, and L-Sectin. Chembiochem 2020; 21:2999-3025. [PMID: 32426893 PMCID: PMC7276794 DOI: 10.1002/cbic.202000238] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/19/2020] [Indexed: 12/16/2022]
Abstract
Carbohydrates play a pivotal role in intercellular communication processes. In particular, glycan antigens are key for sustaining homeostasis, helping leukocytes to distinguish damaged tissues and invading pathogens from healthy tissues. From a structural perspective, this cross‐talk is fairly complex, and multiple membrane proteins guide these recognition processes, including lectins and Toll‐like receptors. Since the beginning of this century, lectins have become potential targets for therapeutics for controlling and/or avoiding the progression of pathologies derived from an incorrect immune outcome, including infectious processes, cancer, or autoimmune diseases. Therefore, a detailed knowledge of these receptors is mandatory for the development of specific treatments. In this review, we summarize the current knowledge about four key C‐type lectins whose importance has been steadily growing in recent years, focusing in particular on how glycan recognition takes place at the molecular level, but also looking at recent progresses in the quest for therapeutics.
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Affiliation(s)
- Pablo Valverde
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
| | - J Daniel Martínez
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
| | - F Javier Cañada
- Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain.,CIBER de Enfermedades Respiratorias (CIBERES), Avda Monforte de Lemos 3-5, 28029, Madrid, Spain
| | - Ana Ardá
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain
| | - Jesús Jiménez-Barbero
- CIC bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology park, Building 800, 48160, Derio, Spain.,Ikerbasque, Basque Foundation for Science, 48009, Bilbao, Spain.,Department of Organic Chemistry II, Faculty of Science and Technology, UPV-EHU, 48940, Leioa, Spain
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5
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Zheng J, Xiao H, Wu R. Specific Identification of Glycoproteins Bearing the Tn Antigen in Human Cells. Angew Chem Int Ed Engl 2017; 56:7107-7111. [PMID: 28514044 PMCID: PMC5529048 DOI: 10.1002/anie.201702191] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/03/2017] [Indexed: 01/17/2023]
Abstract
Glycoproteins contain a wealth of valuable information regarding the development and disease status of cells. In cancer cells, some glycans (such as the Tn antigen) are highly up-regulated, but this remains largely unknown for glycoproteins with a particular glycan. Herein, an innovative method combining enzymatic and chemical reactions was first designed to enrich glycoproteins with the Tn antigen. Using synthetic glycopeptides with O-GalNAc (the Tn antigen) or O-GlcNAc, we demonstrated that the method is selective for glycopeptides with O-GalNAc and can distinguish between these two modifications. The diagnostic ions from the tagged O-GalNAc further confirmed the effectiveness of the method and confidence in the identification of glycopeptides with the Tn antigen by mass spectrometry. Using this method, we identified 96 glycoproteins with the Tn antigen in Jurkat cells. The method can be extensively applied in biological and biomedical research.
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Affiliation(s)
- Jiangnan Zheng
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Haopeng Xiao
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Ronghu Wu
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, 30332, USA
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6
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Zheng J, Xiao H, Wu R. Specific Identification of Glycoproteins Bearing the Tn Antigen in Human Cells. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jiangnan Zheng
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience; Georgia Institute of Technology; Atlanta GA 30332 USA
| | - Haopeng Xiao
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience; Georgia Institute of Technology; Atlanta GA 30332 USA
| | - Ronghu Wu
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering and Bioscience; Georgia Institute of Technology; Atlanta GA 30332 USA
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7
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Artigas G, Hinou H, Garcia-Martin F, Gabius HJ, Nishimura SI. Synthetic Mucin-Like Glycopeptides as Versatile Tools to Measure Effects of Glycan Structure/Density/Position on the Interaction with Adhesion/Growth-Regulatory Galectins in Arrays. Chem Asian J 2016; 12:159-167. [DOI: 10.1002/asia.201601420] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/21/2016] [Indexed: 12/15/2022]
Affiliation(s)
- Gerard Artigas
- Faculty of Advanced Life Science; Hokkaido University, N21W11, Kita-ku; Sapporo 001-0021 Japan
| | - Hiroshi Hinou
- Faculty of Advanced Life Science; Hokkaido University, N21W11, Kita-ku; Sapporo 001-0021 Japan
- Medicinal Chemistry Pharmaceuticals, Co., Ltd. N9W15, Chuo-ku; Sapporo 060-0009 Japan
| | - Fayna Garcia-Martin
- Faculty of Advanced Life Science; Hokkaido University, N21W11, Kita-ku; Sapporo 001-0021 Japan
| | - Hans-Joachim Gabius
- Institute of Physiological Chemistry; Faculty of Veterinary Medicine; Ludwig-Maximilians-University Munich; Veterinärstr. 13 80539 München Germany
| | - Shin-Ichiro Nishimura
- Faculty of Advanced Life Science; Hokkaido University, N21W11, Kita-ku; Sapporo 001-0021 Japan
- Medicinal Chemistry Pharmaceuticals, Co., Ltd. N9W15, Chuo-ku; Sapporo 060-0009 Japan
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8
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Yu J, Schorlemer M, Gomez Toledo A, Pett C, Sihlbom C, Larson G, Westerlind U, Nilsson J. Distinctive MS/MS Fragmentation Pathways of Glycopeptide-Generated Oxonium Ions Provide Evidence of the Glycan Structure. Chemistry 2015; 22:1114-24. [DOI: 10.1002/chem.201503659] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Jin Yu
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; 44227 Dortmund Germany
| | - Manuel Schorlemer
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; 44227 Dortmund Germany
| | - Alejandro Gomez Toledo
- Department of Clinical Chemistry and Transfusion Medicine; Institute of Biomedicine; University of Gothenburg; 40530 Gothenburg Sweden
| | - Christian Pett
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; 44227 Dortmund Germany
| | - Carina Sihlbom
- Proteomics Core Facility; University of Gothenburg; 40530 Gothenburg Sweden
| | - Göran Larson
- Department of Clinical Chemistry and Transfusion Medicine; Institute of Biomedicine; University of Gothenburg; 40530 Gothenburg Sweden
| | - Ulrika Westerlind
- Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; 44227 Dortmund Germany
| | - Jonas Nilsson
- Department of Clinical Chemistry and Transfusion Medicine; Institute of Biomedicine; University of Gothenburg; 40530 Gothenburg Sweden
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9
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Martínez-Sáez N, Castro-López J, Valero-González J, Madariaga D, Compañón I, Somovilla VJ, Salvadó M, Asensio JL, Jiménez-Barbero J, Avenoza A, Busto JH, Bernardes GJL, Peregrina JM, Hurtado-Guerrero R, Corzana F. Deciphering the Non-Equivalence of Serine and Threonine O-Glycosylation Points: Implications for Molecular Recognition of the Tn Antigen by an anti-MUC1 Antibody. Angew Chem Int Ed Engl 2015; 54:9830-4. [PMID: 26118689 PMCID: PMC4552995 DOI: 10.1002/anie.201502813] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 05/06/2015] [Indexed: 11/11/2022]
Abstract
The structural features of MUC1-like glycopeptides bearing the Tn antigen (α-O-GalNAc-Ser/Thr) in complex with an anti MUC-1 antibody are reported at atomic resolution. For the α-O-GalNAc-Ser derivative, the glycosidic linkage adopts a high-energy conformation, barely populated in the free state. This unusual structure (also observed in an α-S-GalNAc-Cys mimic) is stabilized by hydrogen bonds between the peptidic fragment and the sugar. The selection of a particular peptide structure by the antibody is thus propagated to the carbohydrate through carbohydrate/peptide contacts, which force a change in the orientation of the sugar moiety. This seems to be unfeasible in the α-O-GalNAc-Thr glycopeptide owing to the more limited flexibility of the side chain imposed by the methyl group. Our data demonstrate the non-equivalence of Ser and Thr O-glycosylation points in molecular recognition processes. These features provide insight into the occurrence in nature of the APDTRP epitope for anti-MUC1 antibodies.
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Affiliation(s)
- Nuria Martínez-Sáez
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain).,Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (UK)
| | - Jorge Castro-López
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit, Edificio I+D, 50018 Zaragoza (Spain).,Fundación ARAID, Edificio Pignatelli 36, Zaragoza (Spain)
| | - Jessika Valero-González
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit, Edificio I+D, 50018 Zaragoza (Spain).,Fundación ARAID, Edificio Pignatelli 36, Zaragoza (Spain)
| | - David Madariaga
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain)
| | - Ismael Compañón
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain)
| | - Víctor J Somovilla
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain).,Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (UK)
| | - Míriam Salvadó
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (UK).,Departament de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcellí Domingo s/n, 43007 Tarragona (Spain)
| | - Juan L Asensio
- Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006 Madrid (Spain)
| | - Jesús Jiménez-Barbero
- Structural Biology Unit, CIC bioGUNE, Parque Tecnológico de Bizkaia Building 801 A, 48160 Derio (Spain).,IKERBASQUE, Basque Foundation for Science, 48011 Bilbao (Spain).,Department of Chemical and Physical Biology, Centro de Investigaciones Biológicas, CSIC, Ramiro de Maeztu 9, 28040 Madrid (Spain)
| | - Alberto Avenoza
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain)
| | - Jesús H Busto
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain)
| | - Gonçalo J L Bernardes
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW (UK).,Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, 1649-028 Lisboa (Portugal)
| | - Jesús M Peregrina
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain).
| | - Ramón Hurtado-Guerrero
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, BIFI-IQFR (CSIC) Joint Unit, Edificio I+D, 50018 Zaragoza (Spain). .,Fundación ARAID, Edificio Pignatelli 36, Zaragoza (Spain).
| | - Francisco Corzana
- Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química, 26006 Logroño (Spain).
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10
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Martínez-Sáez N, Castro-López J, Valero-González J, Madariaga D, Compañón I, Somovilla VJ, Salvadó M, Asensio JL, Jiménez-Barbero J, Avenoza A, Busto JH, Bernardes GJL, Peregrina JM, Hurtado-Guerrero R, Corzana F. Deciphering the Non-Equivalence of Serine and ThreonineO-Glycosylation Points: Implications for Molecular Recognition of the Tn Antigen by an anti-MUC1 Antibody. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502813] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Madariaga D, Martínez-Sáez N, Somovilla VJ, García-García L, Berbis MÁ, Valero-Gónzalez J, Martín-Santamaría S, Hurtado-Guerrero R, Asensio JL, Jiménez-Barbero J, Avenoza A, Busto JH, Corzana F, Peregrina JM. Serine versus Threonine Glycosylation with α-O-GalNAc: Unexpected Selectivity in Their Molecular Recognition with Lectins. Chemistry 2014; 20:12616-27. [DOI: 10.1002/chem.201403700] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Indexed: 12/17/2022]
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12
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Campo VL, Riul TB, Carvalho I, Baruffi MD. Antibodies against mucin-based glycopeptides affect Trypanosoma cruzi cell invasion and tumor cell viability. Chembiochem 2014; 15:1495-507. [PMID: 24920542 DOI: 10.1002/cbic.201400069] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Indexed: 01/13/2023]
Abstract
This study describes the synthesis of glycopeptides NHAc[βGal]-(Thr)2 -[αGalNAc]-(Thr)2 -[αGlcNAc]-(Thr)2 Gly-OVA (1-OVA) and NHAc[βGal-αGalNAc]-(Thr)3 -[αLacNAc]-(Thr)3 -Gly-OVA (2-OVA) as mimetics of both T. cruzi and tumor mucin glycoproteins. These glycopeptides were obtained by solid-phase synthesis, which involved the prior preparation of the protected glycosyl amino acids αGlcNAc-ThrOH (3), αGalNAc-ThrOH (4), βGal-ThrOH (5), αLacNAc-ThrOH (6), and βGal-αGalNAc-ThrOH (7) through glycosylation reactions. Immunizations of mice with glycopeptides 1-OVA and 2-OVA induced high antibody titers (1:16 000), as verified by ELISA tests, whereas flow cytometry assays showed the capacity of the obtained anti-glycopeptides 1-OVA and 2-OVA antibodies to recognize both T. cruzi and MCF-7 tumor cells. In addition, antisera induced by glycopeptides 1-OVA and 2-OVA were also able to inhibit T. cruzi fibroblast cell invasion (70 %) and to induce antibody-mediated cellular cytotoxicity (ADCC) against MCF-7 cells, with 50 % reduction of cell viability.
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Affiliation(s)
- Vanessa L Campo
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, USP, Av. Café S/N, CEP 14040-903, Ribeirão Preto, SP (Brazil)
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