1
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Hu Z, Benkoulouche M, Barel LA, Le Heiget G, Ben Imeddourene A, Le Guen Y, Monties N, Guerreiro C, Remaud-Siméon M, Moulis C, André I, Mulard LA. Convergent Chemoenzymatic Strategy to Deliver a Diversity of Shigella flexneri Serotype-Specific O-Antigen Segments from a Unique Lightly Protected Tetrasaccharide Core. J Org Chem 2021; 86:2058-2075. [PMID: 32700907 DOI: 10.1021/acs.joc.0c00777] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Progress in glycoscience is strongly dependent on the availability of broadly diverse tailor-made, well-defined, and often complex oligosaccharides. Herein, going beyond natural resources and aiming to circumvent chemical boundaries in glycochemistry, we tackle the development of an in vitro chemoenzymatic strategy holding great potential to answer the need for molecular diversity characterizing microbial cell-surface carbohydrates. The concept is exemplified in the context of Shigella flexneri, a major cause of diarrhoeal disease. Aiming at a broad serotype coverage S. flexneri glycoconjugate vaccine, a non-natural lightly protected tetrasaccharide was designed for compatibility with (i) serotype-specific glucosylations and O-acetylations defining S. flexneri O-antigens, (ii) recognition by suitable α-transglucosylases, and (iii) programmed oligomerization following enzymatic α-d-glucosylation. The tetrasaccharide core was chemically synthesized from two crystalline monosaccharide precursors. Six α-transglucosylases found in the glycoside hydrolase family 70 were shown to transfer glucosyl residues on the non-natural acceptor. The successful proof of concept is achieved for a pentasaccharide featuring the glucosylation pattern from the S. flexneri type IV O-antigen. It demonstrates the potential of appropriately planned chemoenzymatic pathways involving non-natural acceptors and low-cost donor/transglucosylase systems to achieve the demanding regioselective α-d-glucosylation of large substrates, paving the way to microbial oligosaccharides of vaccinal interest.
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Affiliation(s)
- Zhaoyu Hu
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 Rue du Dr Roux, 75724 Paris Cedex 15, France
| | - Mounir Benkoulouche
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France. 135, Avenue de Rangueil, F-31077 Toulouse Cedex 04, France
| | - Louis-Antoine Barel
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 Rue du Dr Roux, 75724 Paris Cedex 15, France.,Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France
| | - Guillaume Le Heiget
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 Rue du Dr Roux, 75724 Paris Cedex 15, France.,Université Paris 13, Sorbonne Paris Cité, 93430 Paris, France
| | - Akli Ben Imeddourene
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France. 135, Avenue de Rangueil, F-31077 Toulouse Cedex 04, France
| | - Yann Le Guen
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 Rue du Dr Roux, 75724 Paris Cedex 15, France.,Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France
| | - Nelly Monties
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France. 135, Avenue de Rangueil, F-31077 Toulouse Cedex 04, France
| | - Catherine Guerreiro
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 Rue du Dr Roux, 75724 Paris Cedex 15, France
| | - Magali Remaud-Siméon
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France. 135, Avenue de Rangueil, F-31077 Toulouse Cedex 04, France
| | - Claire Moulis
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France. 135, Avenue de Rangueil, F-31077 Toulouse Cedex 04, France
| | - Isabelle André
- Toulouse Biotechnology Institute, TBI, Université de Toulouse, CNRS, INRA, INSA, Toulouse, France. 135, Avenue de Rangueil, F-31077 Toulouse Cedex 04, France
| | - Laurence A Mulard
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 Rue du Dr Roux, 75724 Paris Cedex 15, France
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2
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Chen Q, Tan Z, Guan F, Ren Y. The Essential Functions and Detection of Bisecting GlcNAc in Cell Biology. Front Chem 2020; 8:511. [PMID: 32719771 PMCID: PMC7350706 DOI: 10.3389/fchem.2020.00511] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/18/2020] [Indexed: 12/11/2022] Open
Abstract
The N-glycans of mammalian glycoproteins vary greatly in structure, and the biological importance of these variations is mostly unknown. It is widely acknowledged that the bisecting N-acetylglucosamine (GlcNAc) structure, a β1,4-linked GlcNAc attached to the core β-mannose residue, represents a special type of N-glycosylated modification, and it has been reported to be involved in various biological processes, such as cell adhesion, fertilization and fetal development, neuritogenesis, and tumor development. In particular, the occurrence of N-glycans with a bisecting GlcNAc modification on proteins has been proven, with many implications for immune biology. Due to the essential functions of bisecting GlcNAc structures, analytical approaches to this modification are highly required. The traditional approach that has been used for bisecting GlcNAc determinations is based on the lectin recognition of Phaseolus vulgaris erythroagglutinin (PHA-E); however, poor binding specificity hinders the application of this method. With the development of mass spectrometry (MS) with high resolution and improved sensitivity and accuracy, MS-based glycomic analysis has provided precise characterization and quantification for glycosylation modification. In this review, we first provide an overview of the bisecting GlcNAc structure and its biological importance in neurological systems, immune tolerance, immunoglobulin G (IgG), and tumor metastasis and development and then summarize approaches to its determination by MS for performing precise functional studies. This review is valuable for those readers who are interested in the importance of bisecting GlcNAc in cell biology.
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Affiliation(s)
- Qiushi Chen
- Clinical Laboratory of BGI Health, BGI-Shenzhen, Shenzhen, China
| | - Zengqi Tan
- Joint International Research Laboratory of Glycobiology and Medical Chemistry, College of Life Sciences, Northwest University, Xi'an, China
| | - Feng Guan
- Joint International Research Laboratory of Glycobiology and Medical Chemistry, College of Life Sciences, Northwest University, Xi'an, China
| | - Yan Ren
- Clinical Laboratory of BGI Health, BGI-Shenzhen, Shenzhen, China
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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3
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Dey S, Bajaj SO, Tsai TI, Lo HJ, Wu K, Wong CH. Synthesis of Modular Building Blocks using Glycosyl Phosphate Donors for the Construction of Asymmetric N-Glycans. Tetrahedron 2018; 74:6003-6011. [PMID: 30983640 PMCID: PMC6456066 DOI: 10.1016/j.tet.2018.08.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glycosyl phosphates are known as versatile donors for the synthesis of complex oligosaccharides both chemically and enzymatically. Herein, we report the stereoselective construction of modular building blocks for the synthesis of N-glycan using glycosyl phosphates as donors. We have synthesized four trisaccharide building blocks with orthogonal protecting groups, namely, Manβ2GlcNAc(OAc)3β6GlcNAc (9), Manβ2GlcNAc-β6GlcNAc(OAc)3 (15), Manβ2GlcNAc(OAc)3β4GlcNAc (18) and Manβ2GlcNAcβ4GlcNAc(OAc) (22) for further selective elongation using glycosyltransferases. The glycosylation reaction using glycosyl phosphate was found to be high yielding with shorter reaction time. Initially, The phthalimide protected glucosamine donor was exploited to ensure the formation of β-glycosidic linkage and later converted to the N-acetyl group before the enzymatic synthesis. The selective deprotection of O-benzyl group was performed prior to enzymatic synthesis to avoid its negative interference.
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Affiliation(s)
- Supriya Dey
- The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA, USA, 92037
| | - Sumit O Bajaj
- The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA, USA, 92037
- Corden Pharma Colorado Inc., 2075 55 Street, Boulder, CO, USA, 80301
| | - Tsung-I Tsai
- The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA, USA, 92037
| | - Hong-Jay Lo
- The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA, USA, 92037
| | - Kevin Wu
- The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA, USA, 92037
| | - Chi-Huey Wong
- The Scripps Research Institute, 10550 N. Torrey Pines Rd., La Jolla, CA, USA, 92037
- The Genomics Research Center, Academia Sinica, No. 128, Academia Rd., Section 2, Nankang District, Taipei, 115, Taiwan
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4
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Hammura K, Ishikawa A, H. V. RK, Miyoshi R, Yokoi Y, Tanaka M, Hinou H, Nishimura SI. Synthetic Glycopeptides Allow for the Quantitation of Scarce Nonfucosylated IgG Fc N-Glycans of Therapeutic Antibody. ACS Med Chem Lett 2018; 9:889-894. [PMID: 30258536 DOI: 10.1021/acsmedchemlett.8b00127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 08/10/2018] [Indexed: 01/01/2023] Open
Abstract
Glycans attached to the IgG Fc domain affect strongly biological activities such as antibody-dependent cellular cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC) of therapeutic antibodies. However, molecular mechanism in the glycoform-dependent functional modulation of the IgGs remains elusive. The present study communicates that selected reaction monitoring (SRM)-based assay of tryptic IgG Fc glycopeptides is a promising approach for the characterization of antibodies when combined with structure-defined synthetic Fc peptides having a focused N-glycoform as a calibration standard. We describe a novel synthetic approach to the human IgG1 Fc peptide having a bisected decasaccharide and its nonbisected counterpart compound, the signatures of antibodies involving Fc domain with rare N-glycans expected to show much higher ADCC/CDC than abundant IgG N-glycans, and their application to the SRM-based quantitative glycoproteomics. Use of a key intermediate, phenyl (2-O-benzyl-4,6-O-benzylidine-β-d-mannopyranosyl)-(1 → 4)-3,6-di-O-benzyl-2-azido-2-deoxy-1-thio-β-d-glucopyranoside, derived from locust bean gum galactomannan, facilitated greatly the synthesis of a bisected nonasaccharide as a stable precursor of oxazoline derivative needed for the enzymatic trans-glycosylation with Fc nonapeptide carrying a GlcNAc at Asn297 residue, while the coupling reaction catalyzed by mutant endo-M-N175Q proceeded very slowly. Strikingly, SRM assay using the synthetic Fc glycopeptides as calibration standards uncovered the occurrence of the targeted IgG1 Fc fragment carrying a nonfucosylated and bisected (315 fmol, 0.20%) and its nonbisected counterpart (1154 fmol, 0.73%) in the tryptic digests from 158 pmol of anticancer antibody Herceptin (trastuzumab). The results suggest that aberrantly glycosylated IgG Fc variants may contribute to the total biological activities of the therapeutic antibodies.
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Affiliation(s)
- Kazuki Hammura
- Division of Drug Discovery Research, Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University, N21, W11, Kita-ku, Sapporo 001-0021, Japan
| | - Akari Ishikawa
- Division of Drug Discovery Research, Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University, N21, W11, Kita-ku, Sapporo 001-0021, Japan
| | - Ravi Kumar H. V.
- Division of Drug Discovery Research, Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University, N21, W11, Kita-ku, Sapporo 001-0021, Japan
| | - Risho Miyoshi
- Medicinal Chemistry Pharmaceuticals, Co., Ltd.,
N9, W15, Chuo-ku, Sapporo 060-0009, Japan
| | - Yasuhiro Yokoi
- Division of Drug Discovery Research, Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University, N21, W11, Kita-ku, Sapporo 001-0021, Japan
| | - Masakazu Tanaka
- Medicinal Chemistry Pharmaceuticals, Co., Ltd.,
N9, W15, Chuo-ku, Sapporo 060-0009, Japan
| | - Hiroshi Hinou
- Division of Drug Discovery Research, Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University, N21, W11, Kita-ku, Sapporo 001-0021, Japan
- Medicinal Chemistry Pharmaceuticals, Co., Ltd.,
N9, W15, Chuo-ku, Sapporo 060-0009, Japan
| | - Shin-Ichiro Nishimura
- Division of Drug Discovery Research, Faculty of Advanced Life Science and Graduate School of Life Science, Hokkaido University, N21, W11, Kita-ku, Sapporo 001-0021, Japan
- Medicinal Chemistry Pharmaceuticals, Co., Ltd.,
N9, W15, Chuo-ku, Sapporo 060-0009, Japan
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5
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Li W, Gao Y, Li Q, Li ZJ. Ionic-liquid supported rapid synthesis of an N-glycan core pentasaccharide on a 10 g scale. Org Biomol Chem 2018; 16:4720-4727. [DOI: 10.1039/c8ob01046c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A hetero-branched N-glycan core pentasaccharide was rapidly assembled on a new ionic liquid support on a 10 g scale.
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Affiliation(s)
- Wei Li
- The State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Yu Gao
- The State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Qing Li
- The State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
| | - Zhong-Jun Li
- The State Key Laboratory of Natural and Biomimetic Drugs
- School of Pharmaceutical Sciences
- Peking University
- Beijing 100191
- China
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6
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Joosten A, Boultadakis-Arapinis M, Gandon V, Micouin L, Lecourt T. Substitution of the Participating Group of Glycosyl Donors by a Halogen Atom: Influence on the Rearrangement of Transient Orthoesters Formed during Glycosylation Reactions. J Org Chem 2017; 82:3291-3297. [DOI: 10.1021/acs.joc.6b03088] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antoine Joosten
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
| | | | - Vincent Gandon
- Institut de Chimie
Moléculaire et des Matériaux d’Orsay, CNRS UMR
8182, Univ. Paris-Sud, Université Paris-Saclay, Bâtiment 420, 91405 Orsay, France
| | - Laurent Micouin
- Université Paris Descartes, Sorbonne Paris Cité, CNRS (UMR
8601), 75006 Paris, France
| | - Thomas Lecourt
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA UMR 6014, 76000 Rouen, France
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7
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Mönnich M, Eller S, Karagiannis T, Perkams L, Luber T, Ott D, Niemietz M, Hoffman J, Walcher J, Berger L, Pischl M, Weishaupt M, Wirkner C, Lichtenstein RG, Unverzagt C. Hocheffiziente Synthese von multiantennären “bisected” N-Glycanen über Imidate. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604190] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Manuel Mönnich
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Steffen Eller
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | | | - Lukas Perkams
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Thomas Luber
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Dimitri Ott
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Mathäus Niemietz
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Joanna Hoffman
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Janika Walcher
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Lukas Berger
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Matthias Pischl
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Markus Weishaupt
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Cathrin Wirkner
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
| | - Rachel G. Lichtenstein
- Department of Biotechnology Engineering; Ben-Gurion University of the Negev; Beer-Sheva 84105 Israel
| | - Carlo Unverzagt
- Bioorganische Chemie, Gebäude NW1; Universität Bayreuth; 95440 Bayreuth Deutschland
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8
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Mönnich M, Eller S, Karagiannis T, Perkams L, Luber T, Ott D, Niemietz M, Hoffman J, Walcher J, Berger L, Pischl M, Weishaupt M, Wirkner C, Lichtenstein RG, Unverzagt C. Highly Efficient Synthesis of Multiantennary Bisected N-glycans Based on Imidates. Angew Chem Int Ed Engl 2016; 55:10487-92. [PMID: 27443163 DOI: 10.1002/anie.201604190] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Indexed: 12/11/2022]
Abstract
The occurrence of N-glycans with a bisecting GlcNAc modification on glycoproteins has many implications in developmental and immune biology. However, these particular N-glycans are difficult to obtain either from nature or through synthesis. We have developed a flexible and general method for synthesizing bisected N-glycans of the complex type by employing modular TFAc-protected donors for all antennae. The TFAc-protected N-glycans are suitable for the late introduction of a bisecting GlcNAc. This integrated strategy permits for the first time the use of a single approach for multiantennary N-glycans as well as their bisected derivatives via imidates, with unprecedented yields even in a one-pot double glycosylation. With this new method, rare N-glycans of the bisected type can be obtained readily, thereby providing defined tools to decipher the biological roles of bisecting GlcNAc modifications.
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Affiliation(s)
- Manuel Mönnich
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Steffen Eller
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | | | - Lukas Perkams
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Thomas Luber
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Dimitri Ott
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Mathäus Niemietz
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Joanna Hoffman
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Janika Walcher
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Lukas Berger
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Matthias Pischl
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Markus Weishaupt
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Cathrin Wirkner
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany
| | - Rachel G Lichtenstein
- Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel
| | - Carlo Unverzagt
- Bioorganische Chemie, Gebäude NW1, Universität Bayreuth, 95440, Bayreuth, Germany.
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9
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: an update for 2009-2010. MASS SPECTROMETRY REVIEWS 2015; 34:268-422. [PMID: 24863367 PMCID: PMC7168572 DOI: 10.1002/mas.21411] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 07/16/2013] [Accepted: 07/16/2013] [Indexed: 05/07/2023]
Abstract
This review is the sixth update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2010. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, arrays and fragmentation are covered in the first part of the review and applications to various structural typed constitutes the remainder. The main groups of compound that are discussed in this section are oligo and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals. Many of these applications are presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions and applications to chemical synthesis.
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Affiliation(s)
- David J. Harvey
- Department of BiochemistryOxford Glycobiology InstituteUniversity of OxfordOxfordOX1 3QUUK
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10
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Hanashima S, Korekane H, Taniguchi N, Yamaguchi Y. Synthesis of N-glycan units for assessment of substrate structural requirements of N-acetylglucosaminyltransferase III. Bioorg Med Chem Lett 2014; 24:4533-4537. [PMID: 25139566 DOI: 10.1016/j.bmcl.2014.07.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 07/22/2014] [Accepted: 07/29/2014] [Indexed: 12/27/2022]
Abstract
N-Acetylglucosaminyltransferase (GnT) III is a glycosyltransferase which produces bisected N-glycans by transferring GlcNAc to the 4-position of core mannose. Bisected N-glycans are involved in physiological and pathological processes through the functional regulation of their carrier proteins. An understanding of the biological functions of bisected glycans will be greatly accelerated by use of specific inhibitors of GnT-III. Thus far, however, such inhibitors have not been developed and even the substrate-binding mode of GnT-III is not fully understood. To gain insight into structural features required of the substrate, we systematically synthesized four N-glycan units, the branching parts of the bisected and non-bisected N-glycans. The series of syntheses were achieved from a common core trimannose, giving bisected tetra- and hexasaccharides as well as non-bisected tri- and pentasaccharides. A competitive GnT-III inhibition assay using the synthetic substrates revealed a vital role for the Manβ(1-4)GlcNAc moiety. In keeping with previous reports, GlcNAc at the α1,3-branch is also involved in the interaction. The structural requirements of GnT-III elucidated in this study will provide a basis for rational inhibitor design.
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Affiliation(s)
- Shinya Hanashima
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN-Max Planck Joint Research Center for Systems Chemical Biology, RIKEN Global Research Cluster, Wako, Saitama 351-0198, Japan; Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Hiroaki Korekane
- Disease Glycomics Team, Systems Glycobiology Research Group, RIKEN-Max Planck Joint Research Center for Systems Chemical Biology, RIKEN Global Research Cluster, Wako, Saitama 351-0198, Japan
| | - Naoyuki Taniguchi
- Disease Glycomics Team, Systems Glycobiology Research Group, RIKEN-Max Planck Joint Research Center for Systems Chemical Biology, RIKEN Global Research Cluster, Wako, Saitama 351-0198, Japan
| | - Yoshiki Yamaguchi
- Structural Glycobiology Team, Systems Glycobiology Research Group, RIKEN-Max Planck Joint Research Center for Systems Chemical Biology, RIKEN Global Research Cluster, Wako, Saitama 351-0198, Japan.
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11
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Dong H, Rahm M, Thota N, Deng L, Brinck T, Ramström O. Control of the ambident reactivity of the nitrite ion. Org Biomol Chem 2013; 11:648-53. [DOI: 10.1039/c2ob26980e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Li Y, Yin Z, Wang B, Meng XB, Li ZJ. Synthesis of orthogonally protected l-glucose, l-mannose, and l-galactose from d-glucose. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Ott D, Seifert J, Prahl I, Niemietz M, Hoffman J, Guder J, Mönnich M, Unverzagt C. Modular Synthesis of Core Fucosylated N-Glycans. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200468] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wang G, Lu Z, Ding N, Zhang W, Wang P, Li Y. Differentiating the 2,3-diols of glucopyranosides by 4,6-O-benzylidene-protected-1,2-d-glucopyranosylorthoesters strategy. Carbohydr Res 2011; 346:2368-73. [DOI: 10.1016/j.carres.2011.08.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 08/01/2011] [Accepted: 08/08/2011] [Indexed: 11/25/2022]
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Lu Z, Ding N, Zhang W, Wang P, Li Y. A convenient synthesis of the core trisaccharide of the N-glycans. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.04.060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abronina PI, Sedinkin SL, Podvalnyy NM, Fedina KG, Zinin AI, Torgov VI, Kononov LO. Formation of orthoester-linked d-arabinofuranose oligosaccharides and their isomerization into the corresponding glycosides. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.02.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Eller S, Raps C, Niemietz M, Unverzagt C. Convenient introduction of a bisecting GlcNAc residue into multiantennary N-glycans as the ultimate residue. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chang SS, Shih CH, Lai KC, Mong KKT. Rate-Dependent Inverse-Addition β-Selective Mannosylation and Contiguous Sequential Glycosylation Involving β-Mannosidic Bond Formation. Chem Asian J 2010; 5:1152-62. [DOI: 10.1002/asia.200900765] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Unverzagt C, Gundel G, Eller S, Schuberth R, Seifert J, Weiss H, Niemietz M, Pischl M, Raps C. Synthesis of multiantennary complex type N-glycans by use of modular building blocks. Chemistry 2010; 15:12292-302. [PMID: 19806620 DOI: 10.1002/chem.200901908] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A modular set of oligosaccharide building blocks was developed for the synthesis of multiantennary N-glycans of the complex type, which are commonly found on glycoproteins. The donor building blocks were laid out for the elongation of a core trisaccharide acceptor (beta-mannosyl chitobiose) conveniently protected with a single benzylidene moiety at the beta-mannoside. Through two consecutive regio- and stereoselective couplings the donors gave N-glycans with three to five antennae in high yields. Due to the consistent protection group pattern of the donors the deprotection of the final products can be performed by using a general reaction sequence.
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Affiliation(s)
- Carlo Unverzagt
- Bioorganische Chemie, Universität Bayreuth, Gebäude NW1, 95440 Bayreuth, Germany.
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