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Hada N, Morita T, Ueda T, Masuda K, Nakane H, Ogane M, Yamano K, Schweizer F, Kiuchi F. Synthesis of the Carbohydrate Moiety of Glycoproteins from the Parasite Echinococcus granulosus and Their Antigenicity against Human Sera. Molecules 2021; 26:5652. [PMID: 34577122 PMCID: PMC8468584 DOI: 10.3390/molecules26185652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 11/23/2022] Open
Abstract
Stereocontrolled syntheses of biotin-labeled oligosaccharide portions containing the carbohydrate moiety of glycoprotein from Echinococcus granulosus have been accomplished. Trisaccharide Galβ1-3Galβ1-3GalNAcα1-R (A), tetrasaccharide Galα1-4Galβ1-3Galβ1-3GalNAcα1-R (B), and pentasaccharide Galα1-4Galβ1-3Galβ1-3Galβ1-3GalNAcα1-R (C), (R = biotinylated probe) were synthesized by stepwise condensation and/or block synthesis by the use of 5-(methoxycarbonyl)pentyl 2-azido-4,6-O-benzylidene-2-deoxy-α-d-galactopyranoside as a common glycosyl acceptor. The synthesis of the tetrasaccharide and the pentasaccharide was improved from the viewpoint of reducing the number of synthetic steps and increasing the total yield by changing from stepwise condensation to block synthesis. Moreover, hexasaccharide E, which contains the oligosaccharide sequence which occurs in E. granulosus, was synthesized from trisaccharide D. We examined the antigenicity of these five oligosaccharides by an enzyme-linked immunosorbent assay (ELISA). Although compounds of C-E did not exhibit antigenicity against cystic echinococcosis (CE) patient sera, compounds B, D, and E showed good serodiagnostic potential for alveolar echinococcosis (AE).
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Affiliation(s)
- Noriyasu Hada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba 278-8510, Japan
- Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan; (T.M.); (T.U.); (K.M.); (H.N.); (M.O.); (F.K.)
| | - Tokio Morita
- Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan; (T.M.); (T.U.); (K.M.); (H.N.); (M.O.); (F.K.)
| | - Takashi Ueda
- Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan; (T.M.); (T.U.); (K.M.); (H.N.); (M.O.); (F.K.)
| | - Kazuki Masuda
- Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan; (T.M.); (T.U.); (K.M.); (H.N.); (M.O.); (F.K.)
| | - Hiromi Nakane
- Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan; (T.M.); (T.U.); (K.M.); (H.N.); (M.O.); (F.K.)
| | - Mami Ogane
- Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan; (T.M.); (T.U.); (K.M.); (H.N.); (M.O.); (F.K.)
| | - Kimiaki Yamano
- Hokkaido Institute of Public Health, Sapporo 060-0819, Japan;
| | - Frank Schweizer
- Department of Chemistry and Biochemistry, Faculty of Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;
| | - Fumiyuki Kiuchi
- Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan; (T.M.); (T.U.); (K.M.); (H.N.); (M.O.); (F.K.)
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Labrada KP, Strobl S, Eckmair B, Blaukopf M, Dutkiewicz Z, Hykollari A, Malzl D, Paschinger K, Yan S, Wilson IBH, Kosma P. Zwitterionic Phosphodiester-Substituted Neoglycoconjugates as Ligands for Antibodies and Acute Phase Proteins. ACS Chem Biol 2020; 15:369-377. [PMID: 31935056 PMCID: PMC7046318 DOI: 10.1021/acschembio.9b00794] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Zwitterionic modifications of glycans, such as phosphorylcholine and phosphoethanolamine, are known from a range of prokaryotic and eukaryotic species and are recognized by mammalian antibodies and pentraxins; however, defined saccharide ligands modified with these zwitterionic moieties for high-throughput studies are lacking. In this study, we prepared and tested example mono- and disaccharides 6-substituted with either phosphorylcholine or phosphoethanolamine as bovine serum albumin neoglycoconjugates or printed in a microarray format for subsequent assessment of their binding to lectins, pentraxins, and antibodies. C-Reactive protein and anti-phosphorylcholine antibodies bound specifically to ligands with phosphorylcholine, but recognition by concanavalin A was abolished or decreased as compared with that to the corresponding nonzwitterionic compounds. Furthermore, in array format, the phosphorylcholine-modified ligands were recognized by IgG and IgM in sera of either non-infected or nematode-infected dogs and pigs. Thereby, these new compounds are defined ligands which allow the assessment of glycan-bound phosphorylcholine as a target of both the innate and adaptive immune systems in mammals.
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Affiliation(s)
- Karell Pérez Labrada
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Sebastian Strobl
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Barbara Eckmair
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Markus Blaukopf
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Zuzanna Dutkiewicz
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Alba Hykollari
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Daniel Malzl
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Katharina Paschinger
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | | | - Iain B. H. Wilson
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
| | - Paul Kosma
- Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, A-1190 Vienna, Austria
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Hada N, Umeda Y, Kumada H, Shimazaki Y, Yamano K, Schweizer F, Oshima N, Takeda T, Kiuchi F. Synthesis of the Non Reducing End Oligosaccharides of Glycosphingolipids from <i>Ascaris suum</i>. Chem Pharm Bull (Tokyo) 2019; 67:143-154. [DOI: 10.1248/cpb.c18-00768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Noriyasu Hada
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
- Faculty of Pharmacy, Keio University
| | | | | | | | | | - Frank Schweizer
- Departments of Chemistry and Medical Microbiology, University of Manitoba
| | - Naohiro Oshima
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
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4
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Kanaya T, Mashio R, Watanabe T, Schweizer F, Hada N. Synthesis of glycosphingolipids from the fungus Hirsutella rhossiliensis. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.10.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Hada N, Kitamura A, Yamano K, Schweizer F, Kiuchi F. Synthesis and Antigenicity against Human Sera of a Biotin-Labeled Oligosaccharide Portion of a Glycosphingolipid from the Parasite Echinococcus multilocularis. Chem Pharm Bull (Tokyo) 2016; 64:865-73. [DOI: 10.1248/cpb.c16-00211] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | | | - Frank Schweizer
- Departments of Chemistry and Medical Microbiology, University of Manitoba
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Kanaya T, Schweizer F, Takeda T, Kiuchi F, Hada N. Synthetic studies on glycosphingolipids from protostomia phyla: synthesis of glycosphingolipids and related carbohydrate moieties from the parasite Schistosoma mansoni. Carbohydr Res 2012; 361:55-72. [PMID: 22982172 DOI: 10.1016/j.carres.2012.08.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 08/09/2012] [Accepted: 08/14/2012] [Indexed: 10/28/2022]
Abstract
Stereocontrolled syntheses of three neutral glycosphingolipids and six oligosaccharide derivatives found from the parasite Schistosoma mansoni have been accomplished. A pentasaccharide glycosphingolipid β-D-Galp-(1→4)-[α-L-Fucp-(1→3)]-β-D-GlcpNAc-(1→3)-β-D-GalpNAc-(1→4)-β-D-Glcp-(1↔1)-Cer (1), two hexasaccharide glycosphingolipids α-L-Fucp-(1→3)-β-D-Galp-(1→4)-[α-L-Fucp-(1→3)]-β-D-GlcpNAc-(1→3)-β-D-GalpNAc-(1→4)-β-D-Glcp-(1↔1)-Cer (2) and β-D-Galp-(1→4)-[α-L-Fucp-(1→3)]-β-D-GlcpNAc-(1→3)-β-D-GlcpNAc-(1→3)-β-D-GalpNAc-(1→4)-β-D-Glcp-(1↔1)-Cer (3), together with their non-reducing end tri- and tetrasaccharides, β-D-Galp-(1→4)-[α-L-Fucp-(1→3)]-β-D-GlcpNAcOR (4) and α-L-Fucp-(1→3)-β-D-Galp-(1→4)-[α-L-Fucp-(1→3)]-β-D-GlcpNAcOR (5), were synthesized by block synthesis. Moreover, non-reducing end oligosaccharides of schistosomal glycosphingolipids, β-D-GalpNAc-(1→4)-[α-L-Fucp-(1→3)]-β-D-GlcpNAcOR (6), α-L-Fucp-(1→3)-β-D-GalpNAc-(1→4)-[α-L-Fucp-(1→3)]-β-D-GlcpNAcOR (7), α-L-Fucp-(1→3)-β-D-GalpNAc-(1→4)-[α-L-Fucp-(1→2)-α-L-Fucp-(1→3)]-β-D-GlcpNAcOR (8) and α-L-Fucp-(1→3)-β-D-GalpNAc-(1→4)-[α-L-Fucp-(1→2)-α-L-Fucp-(1→2)-α-L-Fucp-(1→3)]-β-D-GlcpNAcOR (9) [R=2-(trimethylsilyl)ethyl], were synthesized as probes to explore their diagnostic potential to detect schistosomiasis from patients' sera.
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Affiliation(s)
- Takayuki Kanaya
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
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7
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Koizumi A, Yamano K, Tsuchiya T, Schweizer F, Kiuchi F, Hada N. Synthesis, antigenicity against human sera and structure-activity relationships of carbohydrate moieties from Toxocara larvae and their analogues. Molecules 2012; 17:9023-42. [PMID: 22847142 PMCID: PMC6268804 DOI: 10.3390/molecules17089023] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 07/20/2012] [Accepted: 07/23/2012] [Indexed: 11/16/2022] Open
Abstract
Stereocontrolled syntheses of biotin-labeled oligosaccharide portions containing the Galβ1-3GalNAc core of the TES-glycoprotein antigen obtained from larvae of the parasite Toxocara and their analogues have been accomplished. Trisaccharides Fuc2Meα1-2Gal4Meβ1-3GalNAcα1-OR (A), Fucα1-2Gal4Meβ1-3GalNAcα1-OR (B), Fuc2Meα1-2Galβ1-3GalNAcα1-OR (C), Fucα1-2Galβ1-3GalNAcα1-OR (D) and a disaccharide Fuc2Meα1-2Gal4Meβ1-OR (E) (R = biotinylated probe) were synthesized by block synthesis using 5-(methoxycarbonyl)pentyl-2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1→3)-2-azide-4-O-benzyl-2-deoxy-α-D-galactopyranoside as a common glycosyl acceptor. We examined the antigenicity of these five oligosaccharides by enzyme linked immunosorbent assay (ELISA). Our results demonstrate that the O-methyl groups in these oligosaccharides are important for their antigenicity and the biotinylated oligosaccharides A, B, C and E have high serodiagnostic potential to detect infections caused by Toxocara larvae.
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Affiliation(s)
- Akihiko Koizumi
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Kimiaki Yamano
- Hokkaido Institute of Public Health, Kita-19, Nishi-12, Kita-ku, Sapporo 060-0819, Japan
| | - Takashi Tsuchiya
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Frank Schweizer
- Departments of Chemistry and Medical Microbiology, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Fumiyuki Kiuchi
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Noriyasu Hada
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
- Author to whom correspondence should be addressed; ; Tel.: +81-3-5400-2666; Fax: +81-3-5400-2556
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8
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Fujita Y, Ohshima N, Hasegawa A, Schweizer F, Takeda T, Kiuchi F, Hada N. Synthesis, inhibitory effects on nitric oxide and structure-activity relationships of a glycosphingolipid from the marine sponge Aplysinella rhax and its analogues. Molecules 2011; 16:637-51. [PMID: 21242943 PMCID: PMC6259274 DOI: 10.3390/molecules16010637] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 12/29/2010] [Accepted: 01/14/2011] [Indexed: 11/27/2022] Open
Abstract
The novel glycosphingolipid, β-D-GalNAcp(1→4)[α-D-Fucp(1→3)]-β-D-GlcNAcp(1→)Cer (A), isolated from the marine sponge Aplysinella rhax has a unique structure, with D-fucose and N-acetyl-D-galactosamine moieties attached to a reducing-end N-acetyl-D-glucosamine through an α1→3 and β1→4 linkage, respectively. We synthesized glycolipid 1 and some non-natural di- and trisaccharide analogues 2-6 containing a D-fucose residue. Among these compounds, the natural type showed the most potent nitric oxide (NO) production inhibitory activity against LPS-induced J774.1 cells. Our results indicate that both the presence of a D-Fucα1-3GlcNAc-linkage and the ceramide aglycon portion are crucial for optimal NO inhibition.
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Affiliation(s)
- Yuzo Fujita
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Naohiro Ohshima
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Ai Hasegawa
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Frank Schweizer
- Department of Chemistry and Medical Microbiology, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada
| | - Tadahiro Takeda
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Fumiyuki Kiuchi
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
| | - Noriyasu Hada
- Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan
- Author to whom correspondence should be addressed; ; Tel.: +81-3-5400-2666; Fax: + 81-3-5400-2556
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9
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Lin AS, Engel S, Smith BA, Fairchild CR, Aalbersberg W, Hay ME, Kubanek J. Structure and biological evaluation of novel cytotoxic sterol glycosides from the marine red alga Peyssonnelia sp. Bioorg Med Chem 2010; 18:8264-9. [PMID: 21036050 DOI: 10.1016/j.bmc.2010.10.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 09/30/2010] [Accepted: 10/05/2010] [Indexed: 11/15/2022]
Abstract
Bioactivity-guided fractionation of the extract from a Fijian red alga Peyssonnelia sp. led to the isolation of two novel sterol glycosides 19-O-β-d-glucopyranosyl-19-hydroxy-cholest-4-en-3-one (1) and 19-O-β-d-N-acetyl-2-aminoglucopyranosyl-19-hydroxy-cholest-4-en-3-one (2), and two known alkaloids indole-3-carboxaldehyde (3) and 3-(hydroxyacetyl)indole (4). Their structures were characterized by 1D and 2D NMR and mass spectral analysis. The sterol glycosides inhibited cancer cell growth with mean IC₅₀ values (for 11 human cancer cell lines) of 1.63 and 1.41μM for 1 and 2, respectively. The most sensitive cancer cell lines were MDA-MB-468 (breast) and A549 (lung), with IC₅₀'s in of 0.71-0.97μM for 1 and 2. Modification of the sterol glycoside structures revealed that the α,β-unsaturated ketone at C-3 and oxygenation at C-19 of 1 and 2 are crucial for anticancer activity, whereas the glucosidic group was not essential but contributed to enhanced activity against the most sensitive cell lines.
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Affiliation(s)
- An-Shen Lin
- Georgia Institute of Technology, Atlanta, 30332, USA
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10
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Ishiwata A, Lee YJ, Ito Y. Recent advances in stereoselective glycosylation through intramolecular aglycon delivery. Org Biomol Chem 2010; 8:3596-608. [DOI: 10.1039/c004281a] [Citation(s) in RCA: 149] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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11
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Kanaya T, Yagi S, Schweizer F, Takeda T, Kiuchi F, Hada N. Synthetic Studies on Glycosphingolipids from Protostomia Phyla: Synthesis of Glycosphingolipids from the Parasite Schistosoma mansoni. Chem Pharm Bull (Tokyo) 2010; 58:811-7. [DOI: 10.1248/cpb.58.811] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Hada N, Shida Y, Negishi N, Schweizer F, Takeda T. Syntheses of glycoclusters containing a phosphocholine residue related to a glycosphingolipid from the earthworm Pheretima hilgendorfi. Chem Pharm Bull (Tokyo) 2009; 57:1081-8. [PMID: 19801862 DOI: 10.1248/cpb.57.1081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Three types of glycoclusters related to an amphoteric glycosphingolipid found in the earthworm Pheretima hilgendorfi were synthesized. The glycoclusters were prepared from a common precursor and a simple approach for the rational design of a glycocluster was developed.
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Affiliation(s)
- Noriyasu Hada
- Faculty of Pharmacy, Keio University, Tokyo 105-8512, Japan.
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13
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Abstract
This review describes the carbohydrate study and the natural product related to the glycoside chemistry. What shall the people in the field of pharmacognosy and natural products chemistry search in scene in future? Forty years before while isolating dimeric compound having naphthoquinonepyrone skeleton from the coloring material produced by the pathogen that hosted in wheat and caused rotten root disease, silica gel has to be treated with oxalic acid to reduce the absorbency before separation. However now a days, availability of reversed phase adsorbents for liquid chromatography has made the separation and isolation of complex compounds possible, easy and rapid. With the advancement of mechanical/physicochemical analytic methods, it has even been possible to isolate traces of compounds present in complex. This advancement has made it possible to determine structure of saponins and complex polysaccharides without decomposition and carry out in vitro bioassay at the same time using various cells on-line. Further, this review describes the oligosaccharide syntheses and biological activities of glycosphingolipids, focusing especially on those found in invertebrates.
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Affiliation(s)
- Tadahiro Takeda
- Division of Natural Medicines, Faculty of Pharmacy, Keio University, Tokyo, Japan.
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14
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Koizumi A, Hada N, Kaburaki A, Yamano K, Schweizer F, Takeda T. Synthetic studies on the carbohydrate moiety of the antigen from the parasite Echinococcusmultilocularis. Carbohydr Res 2009; 344:856-68. [DOI: 10.1016/j.carres.2009.02.019] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2008] [Revised: 02/19/2009] [Accepted: 02/19/2009] [Indexed: 11/29/2022]
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15
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Hada N, Oka J, Hakamata K, Yamamoto K, Takeda T. Synthesis of neutral glycosphingolipids from Zygomycetes. Carbohydr Res 2008; 343:2315-24. [DOI: 10.1016/j.carres.2008.04.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2007] [Revised: 04/09/2008] [Accepted: 04/14/2008] [Indexed: 10/22/2022]
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16
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Hada N, Shida Y, Shimamura H, Sonoda Y, Kasahara T, Sugita M, Takeda T. Synthetic studies on glycosphingolipids from Protostomia phyla: syntheses and biological activities of amphoteric glycolipids containing a phosphocholine residue from the earthworm Pheretima hilgendorfi. Carbohydr Res 2008; 343:2221-8. [DOI: 10.1016/j.carres.2008.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2008] [Revised: 04/30/2008] [Accepted: 05/01/2008] [Indexed: 10/22/2022]
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17
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Intramolecular aglycon delivery. Carbohydr Res 2008; 343:1553-73. [DOI: 10.1016/j.carres.2008.04.031] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2008] [Revised: 04/22/2008] [Accepted: 04/23/2008] [Indexed: 11/20/2022]
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18
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Hada N, Nakashima T, Shrestha SP, Masui R, Narukawa Y, Tani K, Takeda T. Synthesis and biological activities of glycosphingolipid analogues from marine sponge Aplysinella rhax. Bioorg Med Chem Lett 2007; 17:5912-5. [PMID: 17827010 DOI: 10.1016/j.bmcl.2007.07.108] [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] [Received: 06/08/2007] [Revised: 07/24/2007] [Accepted: 07/26/2007] [Indexed: 11/16/2022]
Abstract
A novel glycosphingolipid, beta-D-GalNAcp(1-->4)[alpha-D- Fucp(1-->3)]-beta-D-GlcNAcp(1-->)Cer (1), isolated from the marine sponge Aplysinella rhax, has a unique structure, with D-fucose and N-acetyl-D-galactosamine attached to a reducing-end N-acetyl-D-glucosamine through an alpha1-->3 and beta1-->4 linkage, respectively. We synthesized glycolipid analogues carrying a 2-branched fatty alkyl residue or a 2-trimethylsilyl ethyl residue in place of ceramide (2 and 3), non-natural type trisaccharide analogue containing an L-fucose residue (4), and other analogues (5 and 6). Among these prepared compounds, 2 showed the most potent nitric oxide (NO) production inhibitory activity against LPS-activated J774.1 cells. In addition, their structure-activity relationships were established.
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Affiliation(s)
- Noriyasu Hada
- Kyoritsu University of Pharmacy, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
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19
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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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20
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Bongat AFG, Demchenko AV. Recent trends in the synthesis of O-glycosides of 2-amino-2-deoxysugars. Carbohydr Res 2007; 342:374-406. [PMID: 17125757 DOI: 10.1016/j.carres.2006.10.021] [Citation(s) in RCA: 169] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2006] [Revised: 10/13/2006] [Accepted: 10/20/2006] [Indexed: 11/23/2022]
Abstract
The discovery of new methods for stereoselective glycoside synthesis and convergent oligosaccharide assembly has been critical for the area of glycosciences. At the heart of this account is the discussion of the approaches for stereoselective synthesis of glycosides of 2-amino-2-deoxysugars that have emerged during the past two decades. The introductory part provides general background information and describes the key features and challenges for the synthesis of this class of compounds. Subsequently, major approaches to the synthesis of 2-amino-2-deoxyglycosides are categorized and discussed. Each subsection elaborates on the introduction (or protection) of the amino functionality, synthesis of glycosyl donors by introduction of a suitable leaving group, and glycosidation. Wherever applicable, the deprotection of a temporary amino group substituent and the conversion onto the natural acetamido functionality is described. The conclusions part evaluates the current standing in the field and provides a perspective for future developments.
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Affiliation(s)
- Aileen F G Bongat
- Department of Chemistry and Biochemistry, University of Missouri--St. Louis, One University Blvd., St. Louis, MO 63121, USA
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21
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Hada N, Oka J, Nishiyama A, Takeda T. Stereoselective synthesis of 1,2-cis galactosides: synthesis of a glycolipid containing Galα1-6Gal component from Zygomycetes species. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.06.181] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Hada N, Sonoda Y, Takeda T. Synthesis of a novel glycosphingolipid from the millipede, Parafontaria laminata armigera, and the assembly of its carbohydrate moiety into multivalent structures. Carbohydr Res 2006; 341:1341-52. [PMID: 16697985 DOI: 10.1016/j.carres.2006.04.019] [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: 01/31/2006] [Revised: 04/12/2006] [Accepted: 04/16/2006] [Indexed: 10/24/2022]
Abstract
A novel glycosphingolipid, beta-D-Manp-(1-->4)-[alpha-L-Fucp-(1-->3)]-beta-D-Glcp-(1-->1)-Cer, found in the millipede, Parafontaria laminata armigera, and multivalent derivatives of its carbohydrate moiety were synthesized. As the key step, the target glycolipid (1) was obtained through an inversion reaction at the 2-position of a beta-glucopyranoside residue yielding a beta-mannopyranoside. In addition, the synthesis of fluorescently labeled trimer and tetramer glycoconjugates (2, 3) was achieved by iterative amide bond formation using a monomer unit (24).
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Affiliation(s)
- Noriyasu Hada
- Kyoritsu University of Pharmacy, 1-5-30 Shibakoen, Tokyo 105-8512, Japan
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23
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Kean DE, Ohtsuka I, Sato K, Hada N, Takeda T, Lochnit G, Geyer R, Harnett MM, Harnett W. Dissecting Ascaris glycosphingolipids for immunomodulatory moieties - the use of synthetic structural glycosphingolipid analogues. Parasite Immunol 2006; 28:69-76. [PMID: 16441504 DOI: 10.1111/j.1365-3024.2005.00801.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We have previously shown glycosphingolipids of Ascaris suum to have phosphorylcholine (PC) and non-PC immunomodulatory moieties. In the present study we further investigated the nature of the immunomodulatory moieties by employing three synthetic glycosphingolipids each possessing features of the original molecule to examine effects on macrophage and dendritic cell (DC) cytokine production and surface co-stimulatory molecule expression. Compound 2, which lacked PC but contained ceramide, had no effect on either macrophages or DCs. Surprisingly however, Compound 1, which contained PC and hence arguably most resembled the native material, had, with the exception of a small increase in surface antigen expression, no immunomodulatory properties. Conversely, Compound 3, which contained PC but was otherwise least like the native molecule, demonstrated a number of effects on both macrophages and DCs, including induction of Th-1/pro-inflammatory cytokines, inhibition of such cytokines induced by IFN-gamma/LPS and increased expression of co-stimulatory molecules. Taken together these results indicate: (i) that although PC is an immunomodulatory component of the native molecule other structural feature are necessary to allow it to act; (ii) that carbohydrate rather than ceramide is likely to represent a non-PC immunomodulatory moiety; and (iii) that synthetic PC-containing molecules have the potential to act as immunomodulatory drugs.
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Affiliation(s)
- D E Kean
- Division of Immunology, Infection and Inflammation, University of Glasgow, Glasgow, UK
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24
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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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