1
|
Ochiai H, Elouali S, Yamamoto T, Asai H, Noguchi M, Nishiuchi Y. Chemical and Chemoenzymatic Synthesis of Peptide and Protein Therapeutics Conjugated with Human N-Glycans. ChemMedChem 2024; 19:e202300692. [PMID: 38572578 DOI: 10.1002/cmdc.202300692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/29/2024] [Accepted: 04/02/2024] [Indexed: 04/05/2024]
Abstract
Glycosylation is one of the most ubiquitous post-translational modifications. It affects the structure and function of peptides/proteins and consequently has a significant impact on various biological events. However, the structural complexity and heterogeneity of glycopeptides/proteins caused by the diversity of glycan structures and glycosylation sites complicates the detailed elucidation of glycan function and hampers their clinical applications. To address these challenges, chemical and/or enzyme-assisted synthesis methods have been developed to realize glycopeptides/proteins with well-defined glycan morphologies. In particular, N-glycans are expected to be useful for improving the solubility, in vivo half-life and aggregation of bioactive peptides/proteins that have had limited clinical applications so far due to their short duration of action in the blood and unsuitable physicochemical properties. Chemical glycosylation performed in a post-synthetic procedure can be used to facilitate the development of glycopeptide/protein analogues or mimetics that are superior to the original molecules in terms of physicochemical and pharmacokinetic properties. N-glycans are used to modify targets because they are highly biodegradable and biocompatible and have structures that already exist in the human body. On the practical side, from a quality control perspective, close attention should be paid to their structural homogeneity when they are to be applied to pharmaceuticals.
Collapse
Affiliation(s)
- Hirofumi Ochiai
- GlyTech, Inc., 134 Chudoji Minamimachi KRP #1-2F, Shimogyo-ku, Kyoto, 600-8813, Japan
| | - Sofia Elouali
- GlyTech, Inc., 134 Chudoji Minamimachi KRP #1-2F, Shimogyo-ku, Kyoto, 600-8813, Japan
| | - Takahiro Yamamoto
- GlyTech, Inc., 134 Chudoji Minamimachi KRP #1-2F, Shimogyo-ku, Kyoto, 600-8813, Japan
| | - Hiroaki Asai
- GlyTech, Inc., 134 Chudoji Minamimachi KRP #1-2F, Shimogyo-ku, Kyoto, 600-8813, Japan
| | - Masato Noguchi
- GlyTech, Inc., 134 Chudoji Minamimachi KRP #1-2F, Shimogyo-ku, Kyoto, 600-8813, Japan
| | - Yuji Nishiuchi
- GlyTech, Inc., 134 Chudoji Minamimachi KRP #1-2F, Shimogyo-ku, Kyoto, 600-8813, Japan
- Graduate School of Science, Tohoku University, 6-3, Aramaki Aza-Aoba, Aoba-ku, Sendai, 980-8578, Japan
| |
Collapse
|
2
|
Muto H, Ishii N, Iwamoto M, Matsuo I. Rapid preparation of a glycan oxazoline and a homogeneously glycosylated antibody with an enzyme-immobilized monolithic column. Carbohydr Res 2024; 536:109024. [PMID: 38215662 DOI: 10.1016/j.carres.2024.109024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/14/2024]
Abstract
Chemo-enzymatic glycan engineering is considered to be one of the most promising strategies to enhance efficiency in pharmaceutical research. However, it is assumed that this technology has limited industrial application for the production of biological therapeutics because of the high cost of the process. In this study, we developed a scheme for rapidly preparing a glycan oxazoline and a homogeneously glycosylated antibody. The enzyme-immobilized monolith and the flow chemistry-based approach enabled a glycan oxazoline and a homogeneously glycosylated antibody to be obtained at the gram scale from starting materials (sialylglycopeptide and heterogeneously glycosylated protein) within 2.5 h. This cost-effective scheme for obtaining a large amount of glycan donors and homogeneously glycosylated proteins in a short time will be helpful to implement glycan engineering technology for industrial purposes such as pharmaceutical production.
Collapse
Affiliation(s)
- Hiroshi Muto
- Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Ohra-gun, Gunma, 370-0503, Japan; Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma, 376-8515, Japan
| | - Nozomi Ishii
- Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma, 376-8515, Japan
| | - Mitsuhiro Iwamoto
- Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Ohra-gun, Gunma, 370-0503, Japan
| | - Ichiro Matsuo
- Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma, 376-8515, Japan.
| |
Collapse
|
3
|
Gulyak EL, Alferova VA, Korshun VA, Sapozhnikova KA. Introduction of Carbonyl Groups into Antibodies. Molecules 2023; 28:7890. [PMID: 38067618 PMCID: PMC10707781 DOI: 10.3390/molecules28237890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 11/26/2023] [Accepted: 11/29/2023] [Indexed: 12/18/2023] Open
Abstract
Antibodies and their derivatives (scFv, Fabs, etc.) represent a unique class of biomolecules that combine selectivity with the ability to target drug delivery. Currently, one of the most promising endeavors in this field is the development of molecular diagnostic tools and antibody-based therapeutic agents, including antibody-drug conjugates (ADCs). To meet this challenge, it is imperative to advance methods for modifying antibodies. A particularly promising strategy involves the introduction of carbonyl groups into the antibody that are amenable to further modification by biorthogonal reactions, namely aliphatic, aromatic, and α-oxo aldehydes, as well as aliphatic and aryl-alkyl ketones. In this review, we summarize the preparation methods and applications of site-specific antibody conjugates that are synthesized using this approach.
Collapse
Affiliation(s)
| | | | | | - Ksenia A. Sapozhnikova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia; (E.L.G.); (V.A.A.); (V.A.K.)
| |
Collapse
|
4
|
Liu Y, Nomura K, Abe J, Kajihara Y. Recent advances on the synthesis of N-linked glycoprotein for the elucidation of glycan functions. Curr Opin Chem Biol 2023; 73:102263. [PMID: 36746076 DOI: 10.1016/j.cbpa.2023.102263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/05/2022] [Accepted: 12/30/2022] [Indexed: 02/05/2023]
Abstract
Glycoproteins play roles in many biological events, while, the glycan structure-function relationship has remained to be studied. In order to understand glycan function, homogeneous glycoproteins have been synthesized. This review introduced recent progress of their synthetic approaches.
Collapse
Affiliation(s)
- Yanbo Liu
- Department of Chemistry Osaka University, 1-1 Machikaneyama, Toyonaka, 560-0043 Japan
| | - Kota Nomura
- Department of Chemistry Osaka University, 1-1 Machikaneyama, Toyonaka, 560-0043 Japan
| | - Junpei Abe
- Department of Chemistry Osaka University, 1-1 Machikaneyama, Toyonaka, 560-0043 Japan
| | - Yasuhiro Kajihara
- Department of Chemistry Osaka University, 1-1 Machikaneyama, Toyonaka, 560-0043 Japan.
| |
Collapse
|
5
|
Abstract
Glycans, carbohydrate molecules in the realm of biology, are present as biomedically important glycoconjugates and a characteristic aspect is that their structures in many instances are branched. In determining the primary structure of a glycan, the sugar components including the absolute configuration and ring form, anomeric configuration, linkage(s), sequence, and substituents should be elucidated. Solution state NMR spectroscopy offers a unique opportunity to resolve all these aspects at atomic resolution. During the last two decades, advancement of both NMR experiments and spectrometer hardware have made it possible to unravel carbohydrate structure more efficiently. These developments applicable to glycans include, inter alia, NMR experiments that reduce spectral overlap, use selective excitations, record tilted projections of multidimensional spectra, acquire spectra by multiple receivers, utilize polarization by fast-pulsing techniques, concatenate pulse-sequence modules to acquire several spectra in a single measurement, acquire pure shift correlated spectra devoid of scalar couplings, employ stable isotope labeling to efficiently obtain homo- and/or heteronuclear correlations, as well as those that rely on dipolar cross-correlated interactions for sequential information. Refined computer programs for NMR spin simulation and chemical shift prediction aid the structural elucidation of glycans, which are notorious for their limited spectral dispersion. Hardware developments include cryogenically cold probes and dynamic nuclear polarization techniques, both resulting in enhanced sensitivity as well as ultrahigh field NMR spectrometers with a 1H NMR resonance frequency higher than 1 GHz, thus improving resolution of resonances. Taken together, the developments have made and will in the future make it possible to elucidate carbohydrate structure in great detail, thereby forming the basis for understanding of how glycans interact with other molecules.
Collapse
Affiliation(s)
- Carolina Fontana
- Departamento
de Química del Litoral, CENUR Litoral Norte, Universidad de la República, Paysandú 60000, Uruguay
| | - Göran Widmalm
- Department
of Organic Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden,
| |
Collapse
|
6
|
Protein cysteine S-glycosylation: oxidative hydrolysis of protein S-glycosidic bonds in aqueous alkaline environments. Amino Acids 2023; 55:61-74. [PMID: 36460841 PMCID: PMC9877059 DOI: 10.1007/s00726-022-03208-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 09/13/2022] [Indexed: 12/03/2022]
Abstract
Some glycoproteins contain carbohydrates S-linked to cysteine (Cys) residues. However, relatively few S-glycosylated proteins have been detected, due to the lack of an effective research methodology. This work outlines a general concept for the detection of S-glycosylation sites in proteins. The approach was verified by exploratory experiments on a model mixture of β-S-glucosylated polypeptides obtained by the chemical transformation of lysozyme P00698. The model underwent two processes: (1) oxidative hydrolysis of S-glycosidic bonds under alkaline conditions to expose the thiol group of Cys residues; (2) thiol S-alkylation leading to thiol S-adduct formation at the former S-glycosylation sites. Oxidative hydrolysis was conducted in aqueous urea, dimethyl sulfoxide, or trifluoroethanol, with silver nitrate as the reaction promoter, in the presence of triethylamine and/or pyridine. The concurrent formation of stable protein silver thiolates, gluconic acid, and silver nanoclusters was observed. The essential de-metalation of protein silver thiolates using dithiothreitol preceded the S-labeling of Cys residues with 4-vinyl pyridine or a fluorescent reagent. The S-labeled model was sequenced by tandem mass spectrometry to obtain data on the modifications and their distribution over the protein chains. This enabled the efficiency of both S-glycosidic bonds hydrolysis and S-glycosylation site labeling to be evaluated. Suggestions are also given for testing this novel strategy on real proteomic samples.
Collapse
|
7
|
Powell WC, Evenson GE, Walczak MA. Site-Selective Amide Functionalization by Catalytic Azoline Engrafting. ACS Catal 2022; 12:7789-7797. [PMID: 37138902 PMCID: PMC10153596 DOI: 10.1021/acscatal.2c01938] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Direct peptide and protein activation is a challenging transformation because of the stabilizing effect of the amide group. While enzymes can be considered as prototypical systems that have evolved to achieve high selectivity and specificity, small-molecule catalysts that functionalize the amide group may accommodate a much larger selection of substrates but currently remain scarce. Here, by combining the desired features from both catalytic regimes we designed an artificial cyclodehydratase, a catalytic system for the site-selective modification of peptides and natural products by engrafting heterocycles into their scaffolds. The catalytic system features a molybdenum(VI) center that was decorated with a sterically congested tripod ligand. The optimized catalyst can introduce azolines into small molecules, natural products, and oligopeptides with high efficiency and minimal waste. We further demonstrate the utility of the new protocol in the direct functionalization of a single amide group in the presence of up to seven other chemically similar positions and in the direct conversion of these groups into amines and thioamides. This new mechanistic paradigm may address an unmet need for a general method for the selective and sustainable functionalization of peptides and natural products.
Collapse
Affiliation(s)
- Wyatt C. Powell
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309, United States
| | - Garrett E. Evenson
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309, United States
| | - Maciej A. Walczak
- Department of Chemistry, University of Colorado, Boulder, Colorado 80309, United States
| |
Collapse
|
8
|
Melo Diaz JM, Peel SR, Spencer DI, Hendel JL. Extraction and purification of a High Mannose type oligosaccharide from Phaseolus lunatus beans by oxidative release with sodium hypochlorite. Carbohydr Res 2022; 517:108583. [DOI: 10.1016/j.carres.2022.108583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/20/2022] [Accepted: 05/04/2022] [Indexed: 11/30/2022]
|
9
|
Melo Diaz JM, Moran AB, Peel SR, Hendel JL, Spencer DIR. Egg yolk sialylglycopeptide: purification, isolation and characterization of N-glycans from minor glycopeptide species. Org Biomol Chem 2022; 20:4905-4914. [PMID: 35593095 DOI: 10.1039/d2ob00615d] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sialylglycopeptide (SGP) is a readily available naturally occurring glycopeptide obtained from hen egg yolk which is now commercially available. During SGP extraction, other minor glycopeptide species are identified, bearing N-glycan structures that might be of interest, such as asymmetrically branched and triantennary glycans. As the scale of SGP production increases, recovery of minor glycopeptides and their N-glycans can become more feasible. In this paper, we aim to provide structural characterization of the N-glycans derived from these minor glycopeptides.
Collapse
Affiliation(s)
- Javier Mauricio Melo Diaz
- Ludger Ltd, Culham Science Centre, Oxfordshire, Abingdon, UK. .,Department of Chemistry Royal College of Surgeons in Ireland, 123 St Stephen's Green, Dublin, Ireland
| | - Alan B Moran
- Ludger Ltd, Culham Science Centre, Oxfordshire, Abingdon, UK. .,Leiden University Medical Center, Center for Proteomics and Metabolomics, 2300 RC Leiden, the Netherlands
| | - Simon R Peel
- Ludger Ltd, Culham Science Centre, Oxfordshire, Abingdon, UK.
| | | | | |
Collapse
|
10
|
Zuo S, Zhang F, Liu J, Zuo A. Synthesis of bis(2-imino-1,3-dimethylbenzimidazoline)s via reactions of a solvothermally prepared benzimidazolium chloride and diamines. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
11
|
Fairbanks AJ. Applications of Shoda's reagent (DMC) and analogues for activation of the anomeric centre of unprotected carbohydrates. Carbohydr Res 2020; 499:108197. [PMID: 33256953 DOI: 10.1016/j.carres.2020.108197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/10/2020] [Accepted: 11/11/2020] [Indexed: 10/23/2022]
Abstract
2-Chloro-1,3-dimethylimidazolinium chloride (DMC, herein also referred to as Shoda's reagent) and its derivatives are useful for numerous synthetic transformations in which the anomeric centre of unprotected reducing sugars is selectively activated in aqueous solution. As such unprotected sugars can undergo anomeric substitution with a range of added nucleophiles, providing highly efficient routes to a range of glycosides and glycoconjugates without the need for traditional protecting group manipulations. This mini-review summarizes the development of DMC and some of its derivatives/analogues, and highlights recent applications for protecting group-free synthesis.
Collapse
Affiliation(s)
- Antony J Fairbanks
- School of Physical and Chemical Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand.
| |
Collapse
|
12
|
Pallister E, Gray CJ, Flitsch SL. Enzyme promiscuity of carbohydrate active enzymes and their applications in biocatalysis. Curr Opin Struct Biol 2020; 65:184-192. [PMID: 32942240 DOI: 10.1016/j.sbi.2020.07.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/17/2020] [Accepted: 07/17/2020] [Indexed: 12/13/2022]
Abstract
The application of biocatalysis for the synthesis of glycans and glycoconjugates is a well-established and successful strategy, both for small and large scale synthesis. Compared to chemical synthesis, is has the advantage of high selectivity, but biocatalysis had been largely limited to natural glycans both in terms of reactivity and substrates. This review describes recent advances in exploiting enzyme promiscuity to expand the range of substrates and reactions that carbohydrate active enzymes (CAZymes) can catalyse. The main focus is on formation and hydrolysis of glycosidic linkages, including sugar kinases, reactions that are central to glycobiotechnology. In addition, biocatalysts that generate sugar analogues and modify carbohydrates, such as oxidases, transaminases and acylases are reviewed. As carbohydrate active enzymes become more accessible and protein engineering strategies become faster, the application of biocatalysis in the generation of a wide range of glycoconjugates, beyond natural structures is expected to expand.
Collapse
Affiliation(s)
- Edward Pallister
- School of Chemistry & Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
| | - Christopher J Gray
- School of Chemistry & Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
| | - Sabine L Flitsch
- School of Chemistry & Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK.
| |
Collapse
|
13
|
Fairbanks AJ. Chemoenzymatic synthesis of glycoproteins. Curr Opin Chem Biol 2019; 53:9-15. [DOI: 10.1016/j.cbpa.2019.05.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 05/07/2019] [Accepted: 05/13/2019] [Indexed: 11/26/2022]
|
14
|
Paramasivam S, Fairbanks AJ. Rapid synthesis of N-glycan oxazolines from locust bean gum via the Lafont rearrangement. Carbohydr Res 2019; 477:11-19. [DOI: 10.1016/j.carres.2019.03.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 03/20/2019] [Indexed: 12/16/2022]
|
15
|
Marqvorsen MHS, Paramasivam S, Doelman W, Fairbanks AJ, van Kasteren SI. Efficient synthesis and enzymatic extension of an N-GlcNAz asparagine building block. Chem Commun (Camb) 2019; 55:5287-5290. [PMID: 30994122 DOI: 10.1039/c9cc02051a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
N-Azidoacetyl-d-glucosamine (GlcNAz) is a particularly useful tool in chemical biology as the azide is a metabolically stable yet accessible handle within biological systems. Herein, we report a practical synthesis of FmocAsn(N-Ac3GlcNAz)OH, a building block for solid phase peptide synthesis (SPPS). Protecting group manipulations are minimised by taking advantage of the inherent chemoselectivity of phosphine-mediated azide reduction, and the resulting glycosyl amine is employed directly in the opening of Fmoc protected aspartic anhydride. We show potential application of the building block by establishing it as a substrate for enzymatic glycan extension using sugar oxazolines of varying size and biological significance with several endo-β-N-acetylglucosaminidases (ENGases). The added steric bulk resulting from incorporation of the azide is shown to have no or a minor impact on the yield of enzymatic glycan extension.
Collapse
Affiliation(s)
| | - Sivasinthujah Paramasivam
- Department of Chemistry, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand
| | - Ward Doelman
- Leiden Institute of Chemistry (LIC), Division of Bio-Organic Chemistry, Einsteinweg 55, Leiden, The Netherlands.
| | - Antony John Fairbanks
- Department of Chemistry, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand and Biomolecular Interaction Centre, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand
| | - Sander Izaäk van Kasteren
- Leiden Institute of Chemistry (LIC), Division of Bio-Organic Chemistry, Einsteinweg 55, Leiden, The Netherlands.
| |
Collapse
|
16
|
Lin S, Lowary TL. Synthesis of the Highly Branched Hexasaccharide Core of Chlorella Virus N-Linked Glycans. Chemistry 2018; 24:16992-16996. [PMID: 30280442 DOI: 10.1002/chem.201804795] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Indexed: 01/09/2023]
Abstract
Chlorella viruses produce N-linked glycoproteins with carbohydrate moieties that differ in structure from all other N-linked glycans. In addition, unlike most viruses, these organisms do not hijack the biosynthetic machinery of the host to make glycocoproteins; instead, they produce their own carbohydrate-processing enzymes. A better understanding of the function and assembly of these fascinating and structurally-unprecedented glycans requires access to probe molecules. This work describes the first synthesis of a chlorella virus N-linked glycan, a highly branched hexasaccharide that contains the pentasaccharide present in all of the >15 structures reported to date. The target molecule includes a glucosyl-asparagine linkage and a "hyperbranched" fucose residue in which all of the hydroxyl groups are glycosylated. Both convergent and linear approaches were investigated with the latter being successful in providing the target in 16 steps and 13 % overall yield.
Collapse
Affiliation(s)
- Sicheng Lin
- Alberta Glycomics Centre and Department of Chemistry, The University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Todd L Lowary
- Alberta Glycomics Centre and Department of Chemistry, The University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| |
Collapse
|
17
|
Abstract
Glycosylation is one of the most prevalent posttranslational modifications that profoundly affects the structure and functions of proteins in a wide variety of biological recognition events. However, the structural complexity and heterogeneity of glycoproteins, usually resulting from the variations of glycan components and/or the sites of glycosylation, often complicates detailed structure-function relationship studies and hampers the therapeutic applications of glycoproteins. To address these challenges, various chemical and biological strategies have been developed for producing glycan-defined homogeneous glycoproteins. This review highlights recent advances in the development of chemoenzymatic methods for synthesizing homogeneous glycoproteins, including the generation of various glycosynthases for synthetic purposes, endoglycosidase-catalyzed glycoprotein synthesis and glycan remodeling, and direct enzymatic glycosylation of polypeptides and proteins. The scope, limitation, and future directions of each method are discussed.
Collapse
Affiliation(s)
- Chao Li
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Lai-Xi Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| |
Collapse
|
18
|
Beau JM, Boyer FD, Norsikian S, Urban D, Vauzeilles B, Xolin A. Glycosylation: The Direct Synthesis of 2-Acetamido-2-Deoxy-Sugar Glycosides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800735] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jean-Marie Beau
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud, CNRS, Université Paris-Saclay; 91405 Orsay France
| | - François-Didier Boyer
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
- Institut Jean-Pierre Bourgin, INRA; AgroParisTech, CNRS; Université Paris-Saclay; 78000 Versailles France
| | - Stéphanie Norsikian
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Dominique Urban
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud, CNRS, Université Paris-Saclay; 91405 Orsay France
| | - Boris Vauzeilles
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud, CNRS, Université Paris-Saclay; 91405 Orsay France
| | - Amandine Xolin
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
| |
Collapse
|