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Zhang L, Yu H, Bai Y, Mishra B, Yang X, Wang J, Yu EB, Li R, Chen X. A Neoglycoprotein-Immobilized Fluorescent Magnetic Bead Suspension Multiplex Array for Galectin-Binding Studies. Molecules 2021; 26:6194. [PMID: 34684775 PMCID: PMC8541226 DOI: 10.3390/molecules26206194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/07/2021] [Accepted: 10/09/2021] [Indexed: 11/16/2022] Open
Abstract
Carbohydrate-protein conjugates have diverse applications. They have been used clinically as vaccines against bacterial infection and have been developed for high-throughput assays to elucidate the ligand specificities of glycan-binding proteins (GBPs) and antibodies. Here, we report an effective process that combines highly efficient chemoenzymatic synthesis of carbohydrates, production of carbohydrate-bovine serum albumin (glycan-BSA) conjugates using a squarate linker, and convenient immobilization of the resulting neoglycoproteins on carboxylate-coated fluorescent magnetic beads for the development of a suspension multiplex array platform. A glycan-BSA-bead array containing BSA and 50 glycan-BSA conjugates with tuned glycan valency was generated. The binding profiles of six plant lectins with binding preference towards Gal and/or GalNAc, as well as human galectin-3 and galectin-8, were readily obtained. Our results provide useful information to understand the multivalent glycan-binding properties of human galectins. The neoglycoprotein-immobilized fluorescent magnetic bead suspension multiplex array is a robust and flexible platform for rapid analysis of glycan and GBP interactions and will find broad applications.
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Affiliation(s)
- Libo Zhang
- Department of Chemistry, University of California, Davis, CA 95616, USA; (L.Z.); (H.Y.); (Y.B.); (B.M.); (X.Y.); (J.W.); (E.B.Y.); (R.L.)
| | - Hai Yu
- Department of Chemistry, University of California, Davis, CA 95616, USA; (L.Z.); (H.Y.); (Y.B.); (B.M.); (X.Y.); (J.W.); (E.B.Y.); (R.L.)
| | - Yuanyuan Bai
- Department of Chemistry, University of California, Davis, CA 95616, USA; (L.Z.); (H.Y.); (Y.B.); (B.M.); (X.Y.); (J.W.); (E.B.Y.); (R.L.)
| | - Bijoyananda Mishra
- Department of Chemistry, University of California, Davis, CA 95616, USA; (L.Z.); (H.Y.); (Y.B.); (B.M.); (X.Y.); (J.W.); (E.B.Y.); (R.L.)
| | - Xiaoxiao Yang
- Department of Chemistry, University of California, Davis, CA 95616, USA; (L.Z.); (H.Y.); (Y.B.); (B.M.); (X.Y.); (J.W.); (E.B.Y.); (R.L.)
| | - Jing Wang
- Department of Chemistry, University of California, Davis, CA 95616, USA; (L.Z.); (H.Y.); (Y.B.); (B.M.); (X.Y.); (J.W.); (E.B.Y.); (R.L.)
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Evan B. Yu
- Department of Chemistry, University of California, Davis, CA 95616, USA; (L.Z.); (H.Y.); (Y.B.); (B.M.); (X.Y.); (J.W.); (E.B.Y.); (R.L.)
| | - Riyao Li
- Department of Chemistry, University of California, Davis, CA 95616, USA; (L.Z.); (H.Y.); (Y.B.); (B.M.); (X.Y.); (J.W.); (E.B.Y.); (R.L.)
| | - Xi Chen
- Department of Chemistry, University of California, Davis, CA 95616, USA; (L.Z.); (H.Y.); (Y.B.); (B.M.); (X.Y.); (J.W.); (E.B.Y.); (R.L.)
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Anomeric O-Functionalization of Carbohydrates for Chemical Conjugation to Vaccine Constructs. Molecules 2018; 23:molecules23071742. [PMID: 30018207 PMCID: PMC6099650 DOI: 10.3390/molecules23071742] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/12/2018] [Accepted: 07/13/2018] [Indexed: 11/17/2022] Open
Abstract
Carbohydrates mediate a wide range of biological interactions, and understanding these processes benefits the development of new therapeutics. Isolating sufficient quantities of glycoconjugates from biological samples remains a significant challenge. With advances in chemical and enzymatic carbohydrate synthesis, the availability of complex carbohydrates is increasing and developing methods for stereoselective conjugation these polar head groups to proteins and lipids is critically important for pharmaceutical applications. The aim of this review is to provide an overview of commonly employed strategies for installing a functionalized linker at the anomeric position as well as examples of further transformations that have successfully led to glycoconjugation to vaccine constructs for biological evaluation as carbohydrate-based therapeutics.
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Li CH, Bai YL, Selvaprakash K, Mong KKT, Chen YC. Selective Detection of Shiga-like Toxin 1 from Complex Samples Using Pigeon Ovalbumin Functionalized Gold Nanoparticles as Affinity Probes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:4359-4365. [PMID: 28493685 DOI: 10.1021/acs.jafc.7b00863] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Escherichia coli O157:H7 is a foodborne pathogen. This bacterial strain can generate Shiga-like toxins (SLTs), which can cause serious sickness and even death. Thus, it is important to develop effective and sensitive methods that can be used to rapidly identify the presence of SLTs from complex samples. Pigeon egg white (PEW) contains abundant glycoproteins, including pigeon ovalbumin (POA) (∼60%). POA possesses Gal-α(1→4)-Gal-β(1→4)-GlcNAc termini, which can recognize the B subunits in SLT type 1 (SLT-1B). Thus, POA is a suitable probe for trapping SLT-1B. In this work, we used PEW proteins as starting materials to react with aqueous tetrachloroauric acid for generation of PEW-protein-immobilized gold nanoparticles (AuNPs@PEW) via one-pot reactions. We demonstrated that the generated AuNPs@PEW were mainly dominated by POA-immobilized Au NPs. The as-prepared AuNPs@PEW were used as affinity probes to selectively probe SLT-1B from complex cell lysates derived from E. coli O157:H7. The selective trapping step can be completed within ∼90 s under microwave heating (power = 450 W) to enrich sufficient SLT-1B for matrix-assisted laser desorption/ionization (MALDI) mass spectrometric analysis. Furthermore, this approach can be used to detect SLT-1B at a concentration as low as ∼40 pM. The feasibility of using the proposed method to selectively detect SLT-1B from ham contaminated by E. coli O157:H7 was also demonstrated.
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Affiliation(s)
- Chun-Hsien Li
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 300, Taiwan
| | - Yi-Ling Bai
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 300, Taiwan
| | | | - Kwok-Kong Tony Mong
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 300, Taiwan
| | - Yu-Chie Chen
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 300, Taiwan
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4
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Abstract
The development of glycobiology relies on the sources of particular oligosaccharides in their purest forms. As the isolation of the oligosaccharide structures from natural sources is not a reliable option for providing samples with homogeneity, chemical means become pertinent. The growing demand for diverse oligosaccharide structures has prompted the advancement of chemical strategies to stitch sugar molecules with precise stereo- and regioselectivity through the formation of glycosidic bonds. This Review will focus on the key developments towards chemical O-glycosylations in the current century. Synthesis of novel glycosyl donors and acceptors and their unique activation for successful glycosylation are discussed. This Review concludes with a summary of recent developments and comments on future prospects.
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Affiliation(s)
- Rituparna Das
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) KolkataMohanpurNadia741246India
| | - Balaram Mukhopadhyay
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) KolkataMohanpurNadia741246India
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5
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Yamamoto Y, Itoh T, Yamamoto K. Chemical Synthesis of a Very Long-Chain Fatty Acid, Hexacosanoic Acid (C26:0), and the Ceramide Containing Hexacosanoic Acid. J Nutr Sci Vitaminol (Tokyo) 2016; 61:222-7. [PMID: 26226958 DOI: 10.3177/jnsv.61.222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Hexacosanoic acid (C26:0) (1), a very long-chain fatty acid, is related to various diseases such as adrenoleukodystrophy (ALD), adrenomyeloneuropathy (AMN) and atherosclerosis. As the level of 1 higher than the normal is related to diseases above, hexacosanoic acid (1) and the ceramide 2, which contains 1, are thought to play an important role in various tissues. Hexacosanoic acid (1) is known to be a waxy solid and to be hard to dissolve in water as well as organic solvents. Due to this physical property, it is not easy to handle hexacosanoic acid (1) in a laboratory. Therefore, efficient chemical synthesis of the compounds 1 and 2 has not been reported. Here, we report a versatile synthetic method for hexacosanoic acid (1) and the ceramide 2 containing the fatty acid 1. Synthesis of hexacosanoic acid (1) was achieved by applying the coupling of two alkyl units as a key step. Ceramide 2 was efficiently synthesized by applying the reported procedure together with hexacosanoic acid (1) synthesized here. This synthetic strategy has an advantage of getting various carbon chain length fatty acids and their ceramides by using a variety of carbon chain units. This method is also applicable for large-scale synthesis. In addition, these compounds 1 and 2 are useful for investigation of details of these compounds related to diseases such as ALD and AMN.
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Affiliation(s)
- Yoshinori Yamamoto
- Laboratory of Drug Design and Medicinal Chemistry, Showa Pharmaceutical University
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Maemura M, Ohgaki A, Nakahara Y, Hojo H, Nakahara Y. Solid-Phase Synthesis of Core 8O-Glycan-Linked MUC5AC Glycopeptide. Biosci Biotechnol Biochem 2014; 69:1575-83. [PMID: 16116288 DOI: 10.1271/bbb.69.1575] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The benzyl-protected disaccharide building blocks of core 8 O-glycan (15a/15b) for glycopeptide were stereoselectively synthesized by two glycosidation reactions with the glycosyl fluoride method. The building blocks were utilized in the solid-phase synthesis of a glycopeptide carrying two O-glycans with the consensus sequence of the tandem-repeat domain of MUC5AC. The synthetic glycopeptide was detached from the resin with reagent K, and subsequent debenzylation under conditions of low-acidity TfOH afforded glycopeptide 2. The synthetic sample will be used as a suitable standard in studies of the physicochemical or immunochemical characterization of mucin glycoforms.
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Affiliation(s)
- Makoto Maemura
- Department of Applied Biochemistry, Institute of Glycotechnology, Tokai University, Kanagawa, Japan
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7
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Hsieh HW, Schombs MW, Gervay-Hague J. Integrating ReSET with glycosyl iodide glycosylation in step-economy syntheses of tumor-associated carbohydrate antigens and immunogenic glycolipids. J Org Chem 2014; 79:1736-48. [PMID: 24490844 PMCID: PMC3985971 DOI: 10.1021/jo402736g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Indexed: 01/19/2023]
Abstract
Carbohydrates mediate a wide range of biological processes, and understanding these events and how they might be influenced is a complex undertaking that requires access to pure glycoconjugates. The isolation of sufficient quantities of carbohydrates and glycolipids from biological samples remains a significant challenge that has redirected efforts toward chemical synthesis. However, progress toward complex glycoconjugate total synthesis has been slowed by the need for multiple protection and deprotection steps owing to the large number of similarly reactive hydroxyls in carbohydrates. Two methodologies, regioselective silyl exchange technology (ReSET) and glycosyl iodide glycosylation have now been integrated to streamline the synthesis of the globo series trisaccharides (globotriaose and isoglobotriaose) and α-lactosylceramide (α-LacCer). These glycoconjugates include tumor-associated carbohydrate antigens (TACAs) and immunostimulatory glycolipids that hold promise as immunotherapeutics. Beyond the utility of the step-economy syntheses afforded by this synthetic platform, the studies also reveal a unique electronic interplay between acetate and silyl ether protecting groups. Incorporation of acetates proximal to silyl ethers attenuates their reactivity while reducing undesirable side reactions. This phenomenon can be used to fine-tune the reactivity of silylated/acetylated sugar building blocks.
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Affiliation(s)
- Hsiao-Wu Hsieh
- Department of Chemistry, University
of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Matthew W. Schombs
- Department of Chemistry, University
of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Jacquelyn Gervay-Hague
- Department of Chemistry, University
of California, Davis, One Shields Avenue, Davis, California 95616, United States
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8
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An improved method for the synthesis of protected glycosyl fluorides from thioglycosides using N,N-diethylaminosulfur trifluoride (DAST). Carbohydr Res 2012; 359:81-91. [DOI: 10.1016/j.carres.2012.07.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2012] [Revised: 07/01/2012] [Accepted: 07/04/2012] [Indexed: 11/22/2022]
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9
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Li X, Wu P, Cheng S, Lv X. Synthesis and assessment of globotriose-chitosan conjugate, a novel inhibitor of shiga toxins produced by Escherichia coli. J Med Chem 2012; 55:2702-10. [PMID: 22372889 DOI: 10.1021/jm201570s] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Shiga toxin (Stx)-producing Escherichia coli (STEC) causes diarrhea and colitis in humans that can develop into a life-threatening hemolytic uremic syndrome (HUS). Developing efficient means of controlling STEC diseases, for which no drugs or vaccines are currently available, remains a high priority. We report here the construction and development of chitosan conjugates bearing the Stx ligand trisaccharide globotriose to demonstrate their potential as STEC disease treatment agents. The synthesis was accomplished by grafting a globotriose derivative containing an aldehyde-functionalized aglycone to chitosan amino groups. The obtained globotriose-chitosan conjugate bound with high affinity to Stx and efficiently neutralized its toxicity on Vero cells. Moreover, Stx levels in the gut of infected mice receiving oral doses of the conjugate were greatly diminished, enabling the mice to resist a fatal STEC challenge. The conjugate appears to function as a Stx adsorbent in the gut, preventing toxin entry into the bloodstream and consequent development of HUS. As such, the conjugate could act as a novel agent against STEC disease.
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Affiliation(s)
- Xuebing Li
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.
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10
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Kaeothip S, Demchenko AV. Expeditious oligosaccharide synthesis via selective, semi-orthogonal, and orthogonal activation. Carbohydr Res 2011; 346:1371-88. [PMID: 21663897 PMCID: PMC3129461 DOI: 10.1016/j.carres.2011.05.004] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2011] [Revised: 05/04/2011] [Accepted: 05/05/2011] [Indexed: 12/11/2022]
Abstract
Traditional strategies for oligosaccharide synthesis often require extensive protecting and/or leaving group manipulations between each glycosylation step, thereby increasing the total number of synthetic steps while decreasing the efficiency of the synthesis. In contrast, expeditious strategies allow for the rapid chemical synthesis of complex carbohydrates by minimizing extraneous chemical manipulations. Oligosaccharide synthesis by selective activation of one leaving group over another is one such expeditious strategy. Herein, the significant improvements that have recently emerged in the area of the selective activation are discussed. The development of orthogonal strategy further expands the scope of the selective activation methodology. Surveyed in this article, are representative examples wherein these excellent innovations have been applied to the synthesis of various oligosaccharide sequences.
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Affiliation(s)
- Sophon Kaeothip
- Department of Chemistry and Biochemistry, University of Missouri – St. Louis, One University Boulevard, St. Louis, MO 63121, USA
| | - Alexei V. Demchenko
- Department of Chemistry and Biochemistry, University of Missouri – St. Louis, One University Boulevard, St. Louis, MO 63121, USA
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11
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Zhou G, Liu X, Su D, Li L, Xiao M, Wang PG. Large scale enzymatic synthesis of oligosaccharides and a novel purification process. Bioorg Med Chem Lett 2011; 21:311-4. [DOI: 10.1016/j.bmcl.2010.11.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2010] [Revised: 10/27/2010] [Accepted: 11/01/2010] [Indexed: 11/24/2022]
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12
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Xu Y, Fan H, Lu C, Gao GF, Li X. Synthesis of galabiose-chitosan conjugate as potent inhibitor of Streptococcus suis adhesion. Biomacromolecules 2010; 11:1701-4. [PMID: 20540558 DOI: 10.1021/bm100289v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aim of this work is to construct a safe and effective drug candidate against Streptococcus suis infection. A panel of chitosan-based polymer conjugates with branched galabiose (Galalpha1-4Gal) side chains was synthesized as inhibitors of S. suis adhesion. The synthesis was achieved by using an aldehyde-functionalized galabiose derivative to graft it onto chitosan amino groups. Structural compositions of the conjugates were verified by 1H NMR spectroscopy and CHN elemental analyses. Potent inhibitory activities of the conjugates against S. suis adhesion to human erythrocytes were determined at low nanomolar concentration by HAI assay. An SPR study revealed a high affinity binding (Kd=39.6 nM) of the conjugate with BSI-B4 lectin. By using biocompatible chitosan as the scaffold for presenting S. suis -specific galabiose units, as well as the concise route tailored for the conjugate syntheses, the present study provides a practical way for explorations of new anti- S. suis therapies.
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Affiliation(s)
- Yaozu Xu
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100190, China
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13
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14
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Miyagawa A, Kasuya MCZ, Hatanaka K. Alternative methods of globotrioside production using Vero cells: a microcarrier system procedure. Chem Cent J 2007; 1:26. [PMID: 17980049 PMCID: PMC2213644 DOI: 10.1186/1752-153x-1-26] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2007] [Accepted: 11/05/2007] [Indexed: 12/04/2022] Open
Abstract
Background Glycolipids are one component of cell membranes, and are found most prevalently at the surface of the plasma membrane. Animal cells take in amphipathic glycosides, which are later glycosylated after assimilation in biosynthetic pathways. Gycosylated glycosides are released outside of cells to the surrounding culture medium. This represents an accessible method of obtaining complex glycosides. Results Vero cells are sensitive to Shiga toxins and are known to express the glycosides globotriaosyl ceramide (Gb3) and globotetraosyl ceramide (Gb4) on the surface of the plasma membrane. By administering amphipathic lactosides to Vero cells, the above mentioned glycolipids could be produced by the action of cellular enzymes. In our study, the optimum conditions (seeded cell number, incubated time period, 12-azidododecyl lactoside concentration and medium volume) for the production of Gb3 analogue were investigated. The 87.9 μg/100 mm dish (11.7 % yield) Gb3 analogue was produced under appropriate conditions. The large-scale culture of Vero cells using a microcarrier culture method with repetitions produced about 30 mg of the Gb3 analogue. Conclusion The mass production of glycosides in Vero cells was carried out on a microcarrier with repeated administration of 12-azidododecyl lactoside. The results indicated that the use of both a microcarrier culture and repetition were highly effective in the production of Gb3, Gb4 and sialyl lactoside (GM3) type-oligosaccharides.
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Affiliation(s)
- Atsushi Miyagawa
- Center for Collaborative Research, The University of Tokyo, Tokyo, Japan.
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15
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Xia C, Schümann J, Emmanuel R, Zhang Y, Chen W, Zhang W, De Libero G, Wang PG. Modification of the ceramide moiety of isoglobotrihexosylceramide on its agonist activity in stimulation of invariant natural killer T cells. J Med Chem 2007; 50:3489-96. [PMID: 17608465 DOI: 10.1021/jm0701066] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Isoglobotrihexosylceramide (iGb3) is an endogenous antigen of mammalian cells and can stimulate invariant natural killer T (iNKT) cells to evoke autoimmune activities by the release of T helper 1 (Th1) and Th2 cytokines. Th1 cytokines are correlated with the antitumor and antiviral response, while Th2 cytokines are correlated with the amelioration of autoimmune diseases. iGb3 is a very weak agonist compared to the exogenous alpha-galactosylceramide; however, modification of the ceramide moiety has been advocated as one of the approaches to improve its stimulatory activity and to change the bias of release of Th1 and Th2 cytokines. Two analogues of iGb3, 2H-iGb3 and HO-iGb3 with different ceramide moieties, were synthesized. Bioassay results showed that HO-iGb3 was much more effective in stimulating iNKT cells than iGb3 at low concentration. The assay also showed that the CD1d/2H-iGb3 complexes are remarkably efficient in stimulating iNKT cells.
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Affiliation(s)
- Chengfeng Xia
- Departments of Biochemistry and Chemistry, The Ohio State University, 876 Biological Sciences Building, 484 West 12th Avenue, Columbus, Ohio 43210, and Experimental Immunology, Department of Research, University Hospital Basel, CH-4031 Basel, Switzerland
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16
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Abstract
This review describes the oligosaccharide syntheses and biological activities of glycosphingolipids, focusing especially on those found in invertebrates like millipedes, nematoda parasites, and cestoda parasites, and model compounds related to a major antigenic epitope against antibupleurum 2IIc/PG-1-IgG from antiulcer pectic polysaccharides. A novel and simple approach for the rational design of glycoclusters and glycodendrimers by coupling with a sugar unit and a cluster unit, was developed with beta-alanine derivatives used to construct the latter compounds.
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Affiliation(s)
- Noriyasu Hada
- Division of Natural Medicines, Kyoritsu University of Pharmacy, Tokyo, Japan.
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17
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Franchini L, Matto P, Ronchetti F, Panza L, Barbieri L, Costantino V, Mangoni A, Cavallari M, Mori L, De Libero G. Synthesis and evaluation of human T cell stimulating activity of an alpha-sulfatide analogue. Bioorg Med Chem 2007; 15:5529-36. [PMID: 17544671 DOI: 10.1016/j.bmc.2007.05.044] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2007] [Revised: 05/11/2007] [Accepted: 05/18/2007] [Indexed: 10/23/2022]
Abstract
A concise synthesis of alpha-sulfatide 1, an analogue of natural glycolipid antigens with potential anti-tumor activity, was performed. Two different approaches to the alpha-glycosidic bond were explored, resulting in a high yield and excellent stereoselectivity. Compound 1 combines the structural features of sulfated beta-GalCer (sulfatide) and alpha-GalCer, which activate specific T cells. alpha-Sulfatide 1 was stimulatory for CD1d-restricted semi-invariant Natural Killer T (iNKT) cell clones, although less potent than alpha-GalCer, while it was not recognized by CD1a-restricted sulfatide-specific T cells.
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Affiliation(s)
- Laura Franchini
- Dipartimento di Chimica, Biochimica e Biotecnologie per la Medicina, Università di Milano, Via Saldini 50, 20133 Milano, Italy
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18
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Werz DB, Castagner B, Seeberger PH. Automated Synthesis of the Tumor-Associated Carbohydrate Antigens Gb-3 and Globo-H: Incorporation of α-Galactosidic Linkages. J Am Chem Soc 2007; 129:2770-1. [PMID: 17302423 DOI: 10.1021/ja069218x] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel B Werz
- Laboratory for Organic Chemistry, Swiss Federal Institute of Technology (ETH) Zürich, Wolfgang-Pauli-Str. 10, 8093 Zürich, Switzerland
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19
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Wang C, Li Q, Wang H, Zhang LH, Ye XS. A new one-pot synthesis of Gb3 and isoGb3 trisaccharide analogues. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.09.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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20
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Liu Y, Ding N, Xiao H, Li Y. Efficient Syntheses of a Series of Glycosphingolipids with 1,2‐trans‐Glycosidic Linkages. J Carbohydr Chem 2006. [DOI: 10.1080/07328300600859825] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Matsuoka K, Terabatake M, Umino A, Esumi Y, Hatano K, Terunuma D, Kuzuhara H. Carbosilane Dendrimers Bearing Globotriaoses: Syntheses of Globotrioasyl Derivative and Introduction into Carbosilane Dendrimers†. Biomacromolecules 2006; 7:2274-83. [PMID: 16903671 DOI: 10.1021/bm060368+] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As an application of a one-pot reaction involving Birch reduction and subsequent S(N)2 reaction in liquid ammonia, synthetic assembly of trisaccharidic moieties of globotriaosyl ceramide onto carbosilane dendrimers was accomplished using tris(3-bromopropyl)phenylsilane and tris[tris(3-bromopropyl)silylpropyl]phenylsilane as the core scaffolds. The common globotriaosyl derivative having benzylsulfide functionality at the terminal of the aglycon was efficiently prepared from d-galactose and d-lactose as starting materials. The glycosyl donor derived from galactose and the glycosyl acceptor derived from lactose were condensed in the presence of silver triflate as the best promoter to provide corresponding trisaccharide with newly formed alpha-1-4 linkages in 90% yield. Fully benzylated protection of the trisaccharide was deprotected under the Birch reduction condition followed by acetylation to give an acetate in which alkene was converted into benzyl sulfide by radical addition of alpha-toluenethiol in high yields. On the other hand, carbosilane dendrimers were prepared from appropriate chlorosilanes as starting materials by a combination of hydrosylation followed by alkenylation. The terminal C=C double bonds of the carbosilanes were converted into corresponding alcohols by means of the usual hydroboration reaction, and the alcohols underwent further chemical manipulation to give carbosilane dendrimers with peripheral bromine atoms.
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Affiliation(s)
- Koji Matsuoka
- Department of Functional Materials Science, Faculty of Engineering, Saitama University, Sakura, Saitama 338-8570, Japan.
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Chen L, Zhao XE, Lai D, Song Z, Kong F. A concise and practical synthesis of antigenic globotriose, α-d-Gal-(1→4)-β-d-Gal-(1→4)-β-d-Glc. Carbohydr Res 2006; 341:1174-80. [PMID: 16630600 DOI: 10.1016/j.carres.2006.03.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2006] [Revised: 03/19/2006] [Accepted: 03/22/2006] [Indexed: 11/24/2022]
Abstract
A concise and practical synthesis of the antigenic globotriose, alpha-D-Gal-(1-->4)-beta-D-Gal-(1-->4)-beta-D-Glc (13), was achieved by coupling of a monosaccharide donor, 3-O-allyl-2-O-benzoyl-4,6-O-benzylidene-alpha-D-galactopyranosyl trichloroacetimidate (4) with a disaccharide acceptor, p-methoxyphenyl 2,3,6-tri-O-benzoyl-beta-D-galactopyranosyl-(1-->4)-2,3,6-tri-O-benzoyl-beta-D-glucopyranoside (8), followed by deprotection. In spite of the existence of a C-2-ester substituent capable of neighboring-group participation in the donor, the coupling gave exclusively the alpha-linkage in satisfactory yield. The acceptor 8 was readily obtained from selective 3-O-benzoylation of the galactosyl ring of p-methoxyphenyl 2,6-di-O-benzoyl-beta-D-galactopyranosyl-(1-->4)-2,3,6-tri-O-benzoyl-beta-D-glucopyranoside (7), which was prepared from p-methoxyphenyl beta-D-lactoside (5) via isopropylidenation, benzoylation, and deisopropylidenation. Donor 4 was obtained from p-methoxylphenyl 3-O-allyl-2,4,6-tri-O-benzoyl-beta-D-galactopyranoside (1) via selective 4,6-di-O-debenzoylation, oxidative removal of 1-O-MP, benzylidenation, and trichloroacetimidate formation.
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Affiliation(s)
- Langqiu Chen
- Institute of Chemistry, Xiangtan University, Hunan Province 411105, PR China.
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23
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Abstract
Efficient chemoenzymatic syntheses of iGb3 and Gb3 have been developed. Isoglobotrihexose and globotrihexose were enzymatically synthesized by a three-enzyme system in both solid and solution phases. Then iGb3 and Gb3 were chemically synthesized by coupling of the corresponding trisaccharides with lipid.
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Affiliation(s)
- Qingjia Yao
- Department of Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA
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24
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Nicolaou KC. Joys of Molecules. 2. Endeavors in Chemical Biology and Medicinal Chemistry. J Med Chem 2005; 48:5613-38. [PMID: 16134928 DOI: 10.1021/jm050524f] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K C Nicolaou
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA.
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25
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Yamamura T, Hada N, Kaburaki A, Yamano K, Takeda T. Synthetic studies on glycosphingolipids from Protostomia phyla: total syntheses of glycosphingolipids from the parasite, Echinococcus multilocularis. Carbohydr Res 2004; 339:2749-59. [PMID: 15542084 DOI: 10.1016/j.carres.2004.09.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2004] [Accepted: 09/21/2004] [Indexed: 11/29/2022]
Abstract
Efficient and systematic syntheses of four neutral glycosphingolipids that have been isolated from the metacestodes of Echinococcus multilocularis have been achieved. A key step is the direct glycosylation of galactosyl donors using thioglycosides with benzoyl ceramide in the presence of N-iodosuccinimide (NIS)/TfOH, which gave the desired oligosaccharide derivatives. The fully protected glycosides 13, 20, 22 and 25 were deprotected to give four target glycosphingolipids (1-4).
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Affiliation(s)
- Takeshi Yamamura
- Kyoritsu University of Pharmacy, Shibakoen 1-5-30, Minato-ku, Tokyo 105-8512, Japan
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26
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Kamath VP, Yeske RE, Gregson JM, Ratcliffe RM, Fang YR, Palcic MM. Large-scale chemical and chemo-enzymatic synthesis of a spacer-containing Pk-trisaccharide. Carbohydr Res 2004; 339:1141-6. [PMID: 15063203 DOI: 10.1016/j.carres.2003.12.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2003] [Accepted: 12/26/2003] [Indexed: 10/26/2022]
Abstract
The Pk-trisaccharide, linked to a solid carrier, is a potential agent for neutralization of shiga-like toxin in the gastrointestinal tract. Two approaches to the multigram-scale synthesis of a linkable Pk-trisaccharide derivative were therefore investigated. A four-step chemical synthesis yielded 8-methoxycarbonyloctyl beta-lactoside in 75% yield from lactose. Further conversion of this derivative through either multistep organic synthesis or one-step enzymatic galactosylation with UDP-galactose and recombinant alpha-1,4-galactosyltransferase gave the Pk-trisaccharide derivative 8-methoxycarbonyloctyl alpha-D-galactopyranosyl-(1-->4)-beta-D-galactopyranosyl-(1-->4)-beta-D-glucopyranoside in 25% and 68% overall yields from commercial lactose, respectively.
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Affiliation(s)
- Vivekanand P Kamath
- Department of Research and Process Development, SYNSORB Biotech Inc., 201, 1204 Kensington Road Calgary, Canada AB T2E 6J7
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27
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28
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Abstract
This Review describes the basic concepts that have guided our exploration of new chemical reactions by giving examples of results from my research group. Our strategy of carrying out research is to investigate three to four different topics at a time so we can gather as many results as possible. These may at first appear unrelated to each other but may have the potential to be united into a greater hypothesis after repeated feedback. Three scenarios from our research are presented: the "oxidative-reductive condensation reaction" devised in 1960, which after an interval of nearly 40 years brought forth the new concept of using compounds of structure Ph(2)POR as reducing reagents; the "TiCl(4)-aldol reaction" of 1973 that eventually led to the present "base-promoted aldol reaction" through a chain of ideas; and the "glycosylation reaction using fluorosugars" from 1984 which recently bloomed into "stereocontrolled glycosylation". Thus, it can be said that by reviewing what we had done before, we were able to expand on it to achieve new outcomes.
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Affiliation(s)
- Teruaki Mukaiyama
- Center for Basic Research, The Kitasato Institute, 6-15-5, Toshima, Kita-ku, Tokyo 114-0003, Japan.
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29
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Miura T, Inazu T. Rapid synthesis of oligosaccharide moieties of globotriaosylceramide using fluorous protective group. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00091-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Liu MZ, Fan HN, Lee YC. Chemical synthesis of a P(k)-antigenic globotriose analogue with a functionalized aglycon. Biochimie 2001; 83:693-8. [PMID: 11522399 DOI: 10.1016/s0300-9084(01)01300-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
6-Aminohexyl alpha-D-galactopyranosyl-(1-->4)-beta-D-galactopyranosyl-(1-->4)-beta-D-glucopyranoside (2), a globotriose analogue with a functionalized aglycon, was synthesized, using alpha-D-galactopyranosyluronic acid-(1-->4)-D-galactopyranosyluronic acid [di-GalA (3)] as the starting material, which is commercially available or can be readily prepared from pectin.
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Affiliation(s)
- M Z Liu
- Department of Biology, The Johns Hopkins University, Baltimore, MD 21218, USA
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33
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Nicolaou KC, Mitchell HJ. Adventures in Carbohydrate Chemistry: New Synthetic Technologies, Chemical Synthesis, Molecular Design, and Chemical Biology. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3773(20010504)40:9<1576::aid-anie15760>3.0.co;2-g] [Citation(s) in RCA: 329] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Nicolaou KC, Mitchell HJ. Abenteuer in der Kohlenhydratchemie: Synthesestrategien, Synthesemethoden, Moleküldesign und biologische Chemie. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010504)113:9<1624::aid-ange16240>3.0.co;2-n] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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35
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Sugimura H, Watanabe KI. FORMAL SYNTHESIS OF CYTOSAMINE—A COMPONENT OF NUCLEOSIDE ANTIBIOTICS, THE AMICETIN FAMILY. SYNTHETIC COMMUN 2001. [DOI: 10.1081/scc-100104831] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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36
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Kasuya MC, Wang LX, Lee YC, Mitsuki M, Nakajima H, Miura Y, Sato T, Hatanaka K, Yamagata S, Yamagata T. Azido glycoside primer: a versatile building block for the biocombinatorial synthesis of glycosphingolipid analogues. Carbohydr Res 2000; 329:755-63. [PMID: 11125817 DOI: 10.1016/s0008-6215(00)00238-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A lactoside primer, 12-azidododecyl beta-lactoside, was synthesized via the Koenigs-Knorr method by glycosylation of 1,12-dodecyldiol with perbenzoylated lactosyl bromide. The presence of the 2-O-acyl substituent in the donor gave the beta-lactoside, and an excess of acceptor ensured monoglycosylation of the diol. Mesylation of the omega-hydroxyl group in the aglycon, followed by displacement of the mesylate with azide and subsequent O-debenzoylation gave the desired omega-azidododecyl beta-lactoside. The azido glycoside primer was examined in mouse B16 melanoma cells for its feasibility as a building block for oligosaccharide biosynthesis. Uptake of the azido glycoside primer by B16 cells resulted in the sialylation of the galactose residue of the primer to give a glycosylated product having the same glycan as in ganglioside GM3. After 24 h incubation of B16 cells with the primers, the amount of sialylated omega-azidododecyl beta-lactoside primer was 75% of the amount of sialylated n-dodecyl beta-lactoside. However, after 48 h incubation, both primers gave equal amounts of the sialylated products. Interestingly, the remaining azido glycoside primer after 48 h incubation was 5.6-fold greater than that of the alkyl primer, indicating degradation of the alkyl primer to a larger extent than the omega-azido glycoside primer. The facile chemical synthesis and the efficient uptake in cells make the azido glycoside primer a versatile building block for the biocombinatorial synthesis of glycolipid oligosaccharides.
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Affiliation(s)
- M C Kasuya
- Department of Biomolecular Engineering, Tokyo Institute of Technology, Yokohama, Japan
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37
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Yan F, Wakarchuk WW, Gilbert M, Richards JC, Whitfield DM. Polymer-supported and chemoenzymatic synthesis of the Neisseria meningitidis pentasaccharide: a methodological comparison. Carbohydr Res 2000; 328:3-16. [PMID: 11005572 DOI: 10.1016/s0008-6215(00)00086-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Neisseria meningitidis trisaccharide [GlcNAc[(1-->3)Galbeta(1-->4)Glc-R], tetrasaccharide [Galbeta(1-->4)GlcNAcbeta(1--> 3)Galbeta(1-->4)Glc-R], and a pentasaccharide [Neu5Acalpha(2-->3)Galbeta(1-->4)GlcNAcbeta(1-->3)G albeta(1-->4)Glc-SPh] were prepared via conventional chemical synthesis, polymer-supported synthesis, and chemoenzymatic methods, starting from D-lactose. The polymer polyethyleneglycol monomethylether (MPEG) and the linker dioxyxylene (DOX) were used with a lactose-bound acceptor to improve the purification process. Several enzymes (LgtA, GalE-LgtB fusion, and CMP-Neu5Ac synthetase/sialyltransferase fusion) were used for syntheses of these oligosaccharides. Excellent stereo- and regioselectivities as well as high yield (> 90% from Gal(1-->4)Glc-SPh) of the pentasaccharide were obtained. Both of the convenient processes are suitable for efficient preparation of target oligosaccharides.
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Affiliation(s)
- F Yan
- Institute for Biological Sciences, National Research Council of Canada, Ottawa, Ont
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38
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Faroux-Corlay B, Clary L, Gadras C, Hammache D, Greiner J, Santaella C, Aubertin AM, Vierling P, Fantini J. Synthesis of single- and double-chain fluorocarbon and hydrocarbon galactosyl amphiphiles and their anti-HIV-1 activity. Carbohydr Res 2000; 327:223-60. [PMID: 10945673 DOI: 10.1016/s0008-6215(00)00055-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Galactosylceramide (GalCer) is an alternative receptor allowing HIV-1 entry into CD4(-)/GalCer(+) cells. This glycosphingolipid recognizes the V3 loop of HIV gp120, which plays a key role in the fusion of the HIV envelope and cellular membrane. To inhibit HIV uptake and infection, we designed and synthesized analogs of GalCer. These amphiphiles and bolaamphiphiles consist of single and double hydrocarbon and/or fluorocarbon chain beta-linked to galactose and galactosamine. They derive from serine (GalSer), cysteine (GalCys), and ethanolamine (GalAE). The anti-HIV activity and cytotoxicity of these galactolipids were evaluated in vitro on CEM-SS (a CD4(+) cell line), HT-29, a CD4(-) cell line expressing high levels of GalCer receptor, and/or HT29 genetically modified to express CD4. GalSer and GalAE derivatives, tested in aqueous medium or as part of liposome preparation, showed moderate anti-HIV-1 activities (IC50 in the 20-220 microM range), whereas none of the GalCys derivatives was found to be active. Moreover, only some of these anti-HIV active analogs inhibited the binding of [3H]suramin (a polysulfonyl compound which displays a high affinity for the V3 loop) to SPC3, a synthetic peptide which contains the conserved GPGRAF region of the V3 loop. Our results most likely indicate that the neutralization of the virion through masking of this conserved V3 loop region is not the only mechanism involved in the HIV-1 antiviral activity of our GalCer analogs.
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Affiliation(s)
- B Faroux-Corlay
- Laboratoire de Chimie Bioorganique, ESA 6001 CNRS, Université de Nice Sophia-Antipolis, Faculté des Sciences, France
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Fujihira T, Takido T, Seno M. Synthesis of alkyl and arylthioglycosides and thiodisaccharides via thioiminium salts in a two-phase system. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s1381-1169(98)00082-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Jégou A, Pacheco C, Veyrières A. Stereoselective synthesis of - and d-galactopyranosyl glycosides from an isoprenoid synthon. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00926-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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41
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Hashimoto SI, Sakamoto H, Honda T, Abe H, Nakamura SI, Ikegami S. “Armed-disarmed” glycosidation strategy based on glycosyl donors and acceptors carrying phosphoroamidate as a leaving group: A convergent synthesis of globotriaosylceramide. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10365-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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42
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Lin CC, Shimazaki M, Heck MP, Aoki S, Wang R, Kimura T, Ritzèn H, Takayama S, Wu SH, Weitz-Schmidt G, Wong CH. Synthesis of Sialyl Lewis X Mimetics and Related Structures Using the Glycosyl Phosphite Methodology and Evaluation of E-Selectin Inhibition. J Am Chem Soc 1996. [DOI: 10.1021/ja952265x] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chun-Cheng Lin
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Makoto Shimazaki
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Marie-Pierre Heck
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Shin Aoki
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Ruo Wang
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Teiji Kimura
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Helena Ritzèn
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Shuichi Takayama
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Shih-Hsiung Wu
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Gabriel Weitz-Schmidt
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
| | - Chi-Huey Wong
- Contribution from the Department of Chemistry, The Scripps Research Institute, 10666 North Torrey Pines Road, La Jolla, California 92037
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43
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Vic G, Hastings JJ, Crout DH. Glycosidase-catalysed synthesis of glycosides by an improved procedure for reverse hydrolysis: application to the chemoenzymatic synthesis of galactopyranosyl-(1→4)-O-α-galactopyranoside derivatives. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0957-4166(96)00238-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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44
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45
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Lassaletta J, Schmidt RR. Versatile approach to the synthesis of globoside glycosphingolipids synthesis of sialyl-galactosyl-globoside. Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(95)00771-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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46
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Tsunoda H, Ogawa S. Pseudosugars, 34. Synthesis of 5a-carba-β-D-glycosylceramide analogs linked by imino, ether and sulfide bridges. ACTA ACUST UNITED AC 1995. [DOI: 10.1002/jlac.199519950236] [Citation(s) in RCA: 24] [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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47
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Elofsson M, Broddefalk J, Ekberg T, Kihlberg J. Synthesis of a water-soluble serine-based neoglycolipid which can be covalently linked to solid phases. Carbohydr Res 1994; 258:123-33. [PMID: 8039173 DOI: 10.1016/0008-6215(94)84080-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
N alpha-Fmoc-serine pentafluorophenyl ester was glycosylated with perbenzoylated lactosyl bromide. The resulting product was coupled to a resin functionalized with 6-aminohexanoic acid and then N alpha-acylated to give a serine-based analogue of lactosylceramide. The water-soluble neoglycolipid was covalently linked to microtiter plates via its carboxyl group and was recognized by a lactose-binding lectin in an ELISA.
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Affiliation(s)
- M Elofsson
- Chemical Center, University of Lund, Sweden
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48
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49
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Ogawa S, Tsunoda H. Chemical synthesis of glycosylamide and cerebroside analogs composed of carba sugars. Methods Enzymol 1994; 247:136-43. [PMID: 7898349 DOI: 10.1016/s0076-6879(94)47011-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- S Ogawa
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Japan
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50
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Metz K, Honda M, Komori T. Biologically Active Glycosides from Asteroidea, XXX. – Synthesis of an Optically Active Ceramide of GM1-Type Ganglioside from (+)-diethylL-Tartrate. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/jlac.199319930110] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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