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Albelwi FF, Teleb M, Abu-Serie MM, Moaty MNAA, Alsubaie MS, Zakaria MA, El Kilany Y, Aouad MR, Hagar M, Rezki N. Halting Tumor Progression via Novel Non-Hydroxamate Triazole-Based Mannich Bases MMP-2/9 Inhibitors; Design, Microwave-Assisted Synthesis, and Biological Evaluation. Int J Mol Sci 2021; 22:ijms221910324. [PMID: 34638665 PMCID: PMC8508768 DOI: 10.3390/ijms221910324] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/17/2021] [Accepted: 09/23/2021] [Indexed: 02/07/2023] Open
Abstract
Matrix metalloproteinases (MMPs) are key signaling modulators in the tumor microenvironment. Among MMPs, MMP-2 and MMP-9 are receiving renewed interest as validated druggable targets for halting different tumor progression events. Over the last decades, a diverse range of MMP-2/9 inhibitors has been identified starting from the early hydroxamic acid-based peptidomimetics to the next generation non-hydroxamates. Herein, focused 1,2,4-triazole-1,2,3-triazole molecular hybrids with varying lengths and decorations, mimicking the thematic features of non-hydroxamate inhibitors, were designed and synthesized using efficient protocols and were alkylated with pharmacophoric amines to develop new Mannich bases. After full spectroscopic characterization the newly synthesized triazoles tethering Mannich bases were subjected to safety assessment via MTT assay against normal human fibroblasts, then evaluated for their potential anticancer activities against colon (Caco-2) and breast (MDA-MB 231) cancers. The relatively lengthy bis-Mannich bases 15 and 16 were safer and more potent than 5-fluorouracil with sub-micromolar IC50 and promising selectivity to the screened cancer cell lines rather than normal cells. Both compounds upregulated p53 (2–5.6-fold) and suppressed cyclin D expression (0.8–0.2-fold) in the studied cancers, and thus, induced apoptosis. 15 was superior to 16 in terms of cytotoxic activities, p53 induction, and cyclin D suppression. Mechanistically, both were efficient MMP-2/9 inhibitors with comparable potencies to the reference prototype hydroxamate-based MMP inhibitor NNGH at their anticancer IC50 concentrations. 15 (IC50 = 0.143 µM) was 4-fold more potent than NNGH against MMP-9 with promising selectivity (3.27-fold) over MMP-2, whereas 16 was comparable to NNGH. Concerning MMP-2, 16 (IC50 = 0.376 µM) was 1.2-fold more active than 15. Docking simulations predicted their possible binding modes and highlighted the possible structural determinants of MMP-2/9 inhibitory activities. Computational prediction of their physicochemical properties, ADMET, and drug-likeness metrics revealed acceptable drug-like criteria.
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Affiliation(s)
- Fawzia Faleh Albelwi
- Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia; (F.F.A.); (M.R.A.)
| | - Mohamed Teleb
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt;
| | - Marwa M. Abu-Serie
- Medical Biotechnology Department, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications (SRTA-City), Alexandria 21934, Egypt;
| | - Mohamed Nabil Abd Al Moaty
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt; (M.N.A.A.M.); (M.S.A.); (M.A.Z.); (Y.E.K.)
| | - Mai S. Alsubaie
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt; (M.N.A.A.M.); (M.S.A.); (M.A.Z.); (Y.E.K.)
| | - Mohamed A. Zakaria
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt; (M.N.A.A.M.); (M.S.A.); (M.A.Z.); (Y.E.K.)
| | - Yeldez El Kilany
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt; (M.N.A.A.M.); (M.S.A.); (M.A.Z.); (Y.E.K.)
| | - Mohamed Reda Aouad
- Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia; (F.F.A.); (M.R.A.)
| | - Mohamed Hagar
- Chemistry Department, Faculty of Science, Alexandria University, Alexandria 21321, Egypt; (M.N.A.A.M.); (M.S.A.); (M.A.Z.); (Y.E.K.)
- Correspondence: (M.H.); (N.R.)
| | - Nadjet Rezki
- Department of Chemistry, Faculty of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia; (F.F.A.); (M.R.A.)
- Correspondence: (M.H.); (N.R.)
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2
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Pifferi C, Thomas B, Goyard D, Berthet N, Renaudet O. Heterovalent Glycodendrimers as Epitope Carriers for Antitumor Synthetic Vaccines. Chemistry 2017; 23:16283-16296. [PMID: 28845889 PMCID: PMC6175327 DOI: 10.1002/chem.201702708] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Indexed: 01/01/2023]
Abstract
The large majority of TACA-based (TACA=Tumor-Associated Carbohydrate Antigens) antitumor vaccines target only one carbohydrate antigen, thereby often resulting in the incomplete destruction of cancer cells. However, the morphological heterogeneity of the tumor glycocalix, which is in constant evolution during malignant transformation, is a crucial point to consider in the design of vaccine candidates. In this paper, an efficient synthetic strategy based on orthogonal chemoselective ligations to prepare fully synthetic glycosylated cyclopeptide scaffolds grafted with both Tn and TF antigen analogues is reported. To evaluate their ability to be recognized as tumor antigens, direct interaction ELISA assays have been performed with the anti-Tn monoclonal antibody 9A7. Although both heterovalent structures showed binding capacities with 9A7, the presence of the second TF epitope did not interfere with the recognition of Tn except in one epitope arrangement. This heterovalent glycosylated structure thus represents an attractive epitope carrier to be further functionalized with T-cell peptide epitopes.
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Affiliation(s)
- Carlo Pifferi
- Univ. Grenoble AlpesCNRSDCM UMR 525038000GrenobleFrance
| | | | - David Goyard
- Univ. Grenoble AlpesCNRSDCM UMR 525038000GrenobleFrance
| | | | - Olivier Renaudet
- Univ. Grenoble AlpesCNRSDCM UMR 525038000GrenobleFrance
- Institut Universitaire de France103 boulevard Saint-Michel75005ParisFrance
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3
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Sangwan R, Mandal PK. Recent advances in photoinduced glycosylation: oligosaccharides, glycoconjugates and their synthetic applications. RSC Adv 2017. [DOI: 10.1039/c7ra01858d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Carbohydrates have been demonstrated to perform imperative act in biological processes. This review highlights recent uses of photoinduced glycosylation in carbohydrate chemistry for the synthesis of oligosaccharides, thiosugars, glycoconjugates and glycoprotein.
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Affiliation(s)
- Rekha Sangwan
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
- Academy of Scientific and Innovative Research
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
- Academy of Scientific and Innovative Research
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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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Sun S, Zheng XJ, Huo CX, Song C, Li Q, Ye XS. Synthesis and Evaluation of Glycoconjugates ComprisingN-Acyl-Modified Thomsen-Friedenreich Antigens as Anticancer Vaccines. ChemMedChem 2016; 11:1090-6. [DOI: 10.1002/cmdc.201600094] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Revised: 03/17/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Shuang Sun
- State Key Laboratory of Natural and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Chang-Xin Huo
- State Key Laboratory of Natural and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Chengcheng Song
- State Key Laboratory of Natural and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs; School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
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Yin Z, Dulaney S, McKay CS, Baniel C, Kaczanowska K, Ramadan S, Finn MG, Huang X. Chemical Synthesis of GM2 Glycans, Bioconjugation with Bacteriophage Qβ, and the Induction of Anticancer Antibodies. Chembiochem 2016; 17:174-80. [PMID: 26538065 PMCID: PMC4726457 DOI: 10.1002/cbic.201500499] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Indexed: 01/10/2023]
Abstract
The development of carbohydrate-based antitumor vaccines is an attractive approach towards tumor prevention and treatment. Herein, we focused on the ganglioside GM2 tumor-associated carbohydrate antigen (TACA), which is overexpressed in a wide range of tumor cells. GM2 was synthesized chemically and conjugated with a virus-like particle derived from bacteriophage Qβ. Although the copper-catalyzed azide-alkyne cycloaddition reaction efficiently introduced 237 copies of GM2 per Qβ, this construct failed to induce significant amounts of anti-GM2 antibodies compared to the Qβ control. In contrast, GM2 immobilized on Qβ through a thiourea linker elicited high titers of IgG antibodies that recognized GM2-positive tumor cells and effectively induced cell lysis through complement-mediated cytotoxicity. Thus, bacteriophage Qβ is a suitable platform to boost antibody responses towards GM2, a representative member of an important class of TACA: the ganglioside.
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Affiliation(s)
- Zhaojun Yin
- Department of Chemistry, Michigan State University, 578 S. Shaw Lane, Room 426, East Lansing, MI, 48824-1322, USA
| | - Steven Dulaney
- Department of Chemistry, Michigan State University, 578 S. Shaw Lane, Room 426, East Lansing, MI, 48824-1322, USA
| | - Craig S McKay
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA, 30332-0400, USA
| | - Claire Baniel
- Department of Chemistry, Michigan State University, 578 S. Shaw Lane, Room 426, East Lansing, MI, 48824-1322, USA
| | - Katarzyna Kaczanowska
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA, 30332-0400, USA
| | - Sherif Ramadan
- Department of Chemistry, Michigan State University, 578 S. Shaw Lane, Room 426, East Lansing, MI, 48824-1322, USA
- Chemistry Department, Faculty of Science, Benha University, Benha, Qaliobiya, Egypt
| | - M G Finn
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA, 30332-0400, USA
| | - Xuefei Huang
- Department of Chemistry, Michigan State University, 578 S. Shaw Lane, Room 426, East Lansing, MI, 48824-1322, USA.
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7
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Tavernaro I, Hartmann S, Sommer L, Hausmann H, Rohner C, Ruehl M, Hoffmann-Roeder A, Schlecht S. Synthesis of tumor-associated MUC1-glycopeptides and their multivalent presentation by functionalized gold colloids. Org Biomol Chem 2015; 13:81-97. [PMID: 25212389 DOI: 10.1039/c4ob01339e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The mucin MUC1 is a glycoprotein involved in fundamental biological processes, which can be found over-expressed and with a distinctly altered glycan pattern on epithelial tumor cells; thus it is a promising target structure in the quest for effective carbohydrate-based cancer vaccines and immunotherapeutics. Natural glycopeptide antigens indicate only a low immunogenicity and a T-cell independent immune response; however, this major drawback can be overcome by coupling of glycopeptide antigens multivalently to immunostimulating carrier platforms. In particular, gold nanoparticles are well suited as templates for the multivalent presentation of glycopeptide antigens, due to their remarkably high surface-to-volume ratio in combination with their high biostability. In this work the synthesis of novel MUC1-glycopeptide antigens and their coupling to gold nanoparticles of different sizes are presented. In addition, the development of a new dot-blot immunoassay to test the potential antigen-antibody binding is introduced.
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Affiliation(s)
- Isabella Tavernaro
- Institute of Inorganic and Analytical Chemistry, Justus-Liebig-University Giessen, Heinrich-Buff-Ring 58, 35392 Giessen, Germany.
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8
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Birikaki L, Pradeau S, Armand S, Priem B, Márquez-Domínguez L, Reyes-Leyva J, Santos-López G, Samain E, Driguez H, Fort S. Chemoenzymatic Syntheses of Sialylated Oligosaccharides Containing C5-Modified Neuraminic Acids for Dual Inhibition of Hemagglutinins and Neuraminidases. Chemistry 2015; 21:10903-12. [DOI: 10.1002/chem.201500708] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Indexed: 11/10/2022]
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9
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Cai H, Chen MS, Sun ZY, Zhao YF, Kunz H, Li YM. MUC1-Glycopeptidkonjugate mit T-Zellepitopen von Tetanus-Toxoid als vollsynthetische Antitumor-Vakzine mit Eigenverstärkungseffekt. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300390] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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10
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Cai H, Chen MS, Sun ZY, Zhao YF, Kunz H, Li YM. Self-Adjuvanting Synthetic Antitumor Vaccines from MUC1 Glycopeptides Conjugated to T-Cell Epitopes from Tetanus Toxoid. Angew Chem Int Ed Engl 2013; 52:6106-10. [DOI: 10.1002/anie.201300390] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 02/15/2013] [Indexed: 12/15/2022]
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11
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Yang L, Qin Q, Ye XS. Preactivation: An Alternative Strategy in Stereoselective Glycosylation and Oligosaccharide Synthesis. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201200136] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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12
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Verma PR, Mukhopadhyay B. Concise synthesis of a tetra- and a trisaccharide related to the repeating unit of the O-antigen from Providencia rustigianii O34 in the form of their p-methoxyphenyl glycosides. RSC Adv 2013. [DOI: 10.1039/c2ra22407k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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13
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Wang P, Dong S, Brailsford JA, Iyer K, Townsend SD, Zhang Q, Hendrickson RC, Shieh J, Moore MAS, Danishefsky SJ. At last: erythropoietin as a single glycoform. Angew Chem Int Ed Engl 2012; 51:11576-84. [PMID: 23012228 PMCID: PMC3500780 DOI: 10.1002/anie.201206090] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Indexed: 01/21/2023]
Affiliation(s)
- Ping Wang
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA)
| | - Suwei Dong
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA)
| | - John A. Brailsford
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA)
| | - Karthik Iyer
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA)
| | - Steven D. Townsend
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA)
| | - Qiang Zhang
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA)
| | - Ronald C. Hendrickson
- Department of Pharmacology and Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA)
| | - JaeHung Shieh
- Cell Biology Program, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA)
| | - Malcolm A. S. Moore
- Cell Biology Program, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA)
| | - Samuel J. Danishefsky
- Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10065 (USA). Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027
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14
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Wilkinson BL, Day S, Chapman R, Perrier S, Apostolopoulos V, Payne RJ. Synthesis and Immunological Evaluation of Self-Assembling and Self-Adjuvanting Tricomponent Glycopeptide Cancer-Vaccine Candidates. Chemistry 2012; 18:16540-8. [DOI: 10.1002/chem.201202629] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 09/04/2012] [Indexed: 12/31/2022]
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15
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Wang P, Dong S, Brailsford JA, Iyer K, Townsend SD, Zhang Q, Hendrickson RC, Shieh J, Moore MAS, Danishefsky SJ. At Last: Erythropoietin as a Single Glycoform. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206090] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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16
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Chang Hsu Y, Hwu JR. Deoxygenative Olefination Reaction as the Key Step in the Syntheses of Deoxy and Iminosugars. Chemistry 2012; 18:7686-90. [DOI: 10.1002/chem.201201060] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Indexed: 11/09/2022]
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17
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Durantie E, Bucher C, Gilmour R. Fluorine-directed β-galactosylation: chemical glycosylation development by molecular editing. Chemistry 2012; 18:8208-15. [PMID: 22592962 DOI: 10.1002/chem.201200468] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Indexed: 11/10/2022]
Abstract
Validation of the 2-fluoro substituent as an inert steering group to control chemical glycosylation is presented. A molecular editing study has revealed that the exceptional levels of diastereocontrol in glycosylation processes by using 2-fluoro-3,4,6-tri-O-benzyl glucopyranosyl trichloroacetimidate (TCA) scaffolds are a consequence of the 2R,3S,4S stereotriad. This study has also revealed that epimerization at C4, results in a substantial enhancement in β-selectivity (up to β/α 300:1).
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Affiliation(s)
- Estelle Durantie
- Laboratory for Organic Chemistry, Swiss Federal Institute of Technology (ETH) Zürich, 8093 Zürich, Switzerland
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18
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Andrews RS, Becker JJ, Gagné MR. A Photoflow Reactor for the Continuous Photoredox-Mediated Synthesis ofC-Glycoamino Acids andC-Glycolipids. Angew Chem Int Ed Engl 2012; 51:4140-3. [DOI: 10.1002/anie.201200593] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Indexed: 11/10/2022]
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19
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Andrews RS, Becker JJ, Gagné MR. A Photoflow Reactor for the Continuous Photoredox-Mediated Synthesis ofC-Glycoamino Acids andC-Glycolipids. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200593] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Awan SI, Werz DB. Syntheses of 1,2-annulated and 1-spiroannulated carbohydrate derivatives: Recent developments. Bioorg Med Chem 2012; 20:1846-56. [DOI: 10.1016/j.bmc.2011.10.089] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 10/20/2011] [Accepted: 10/30/2011] [Indexed: 01/09/2023]
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21
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Hsu CH, Hung SC, Wu CY, Wong CH. Toward automated oligosaccharide synthesis. Angew Chem Int Ed Engl 2011; 50:11872-923. [PMID: 22127846 DOI: 10.1002/anie.201100125] [Citation(s) in RCA: 205] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Indexed: 12/16/2022]
Abstract
Carbohydrates have been shown to play important roles in biological processes. The pace of development in carbohydrate research is, however, relatively slow due to the problems associated with the complexity of carbohydrate structures and the lack of general synthetic methods and tools available for the study of this class of biomolecules. Recent advances in synthesis have demonstrated that many of these problems can be circumvented. In this Review, we describe the methods developed to tackle the problems of carbohydrate-mediated biological processes, with particular focus on the issue related to the development of the automated synthesis of oligosaccharides. Further applications of carbohydrate microarrays and vaccines to human diseases are also highlighted.
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Affiliation(s)
- Che-Hsiung Hsu
- The Genomics Research Center, Academia Sinica, Taipei, Taiwan
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22
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Hsu CH, Hung SC, Wu CY, Wong CH. Auf dem Weg zur automatisierten Oligosaccharid- Synthese. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100125] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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23
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Platen T, Schüler T, Tremel W, Hoffmann-Röder A. Synthesis and Antibody Binding of Highly Fluorinated Amphiphilic MUC1 Glycopeptide Antigens. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100648] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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24
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Cai H, Huang ZH, Shi L, Zhao YF, Kunz H, Li YM. Towards a fully synthetic MUC1-based anticancer vaccine: efficient conjugation of glycopeptides with mono-, di-, and tetravalent lipopeptides using click chemistry. Chemistry 2011; 17:6396-406. [PMID: 21538615 DOI: 10.1002/chem.201100217] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Indexed: 11/08/2022]
Abstract
The membrane-bound tumor-associated glycoprotein MUC1 is aberrantly glycosylated in cancer cells compared with normal cells, and is therefore considered an attractive target for cancer immunotherapy. However, tumor-associated glycopeptides from MUC1 do not elicit a sufficiently robust immune response. Therefore, antitumor vaccines were developed, which consist of MUC1 glycopeptides as the B epitopes and immune-stimulating toll-like receptor 2 (TLR 2) lipopeptide ligands. These fully synthetic vaccine candidates were prepared by solid-phase synthesis of the MUC1 glycopeptides. The Pam(3) Cys lipopeptide, also synthesized on solid-phase, was C-terminally coupled to oligovalent lysine cores, which N-terminally incorporate O-propargyl oligoethylene glycol acyl side chains. The MUC1 glycopeptides and lipopeptide lysine constructs were then conjugated by click chemistry to give oligovalent synthetic vaccines. Oligovalent glycopeptide-lipopeptide conjugates are considered more immunogenic than their monovalent analogues.
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Affiliation(s)
- Hui Cai
- Department of Chemistry, Tsinghua University, Key Lab of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Tsinghua University, Beijing 100084, PR China
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25
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Colombel S, Sanselme M, Leclerc E, Quirion J, Pannecoucke X. Straightforward Preparation of Functionalized α‐CF
2
‐Galactosides through an Oxygen to Carbon Acyl Migration. Chemistry 2011; 17:5238-41. [DOI: 10.1002/chem.201100183] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Indexed: 11/06/2022]
Affiliation(s)
- Sophie Colombel
- UMR6014 & FR3038‐IRCOF, CNRS, Université et INSA de Rouen, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France), Fax: (+33) 2‐35‐52‐29‐59
| | - Morgane Sanselme
- UPRES EA 3233, Université de Rouen, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France)
| | - Eric Leclerc
- UMR6014 & FR3038‐IRCOF, CNRS, Université et INSA de Rouen, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France), Fax: (+33) 2‐35‐52‐29‐59
| | - Jean‐Charles Quirion
- UMR6014 & FR3038‐IRCOF, CNRS, Université et INSA de Rouen, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France), Fax: (+33) 2‐35‐52‐29‐59
| | - Xavier Pannecoucke
- UMR6014 & FR3038‐IRCOF, CNRS, Université et INSA de Rouen, 1 rue Tesnière, 76821 Mont Saint‐Aignan Cedex (France), Fax: (+33) 2‐35‐52‐29‐59
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26
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Grayson EJ, Bernardes GJL, Chalker JM, Boutureira O, Koeppe JR, Davis BG. A Coordinated Synthesis and Conjugation Strategy for the Preparation of Homogeneous Glycoconjugate Vaccine Candidates. Angew Chem Int Ed Engl 2011; 50:4127-32. [DOI: 10.1002/anie.201006327] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Revised: 01/05/2011] [Indexed: 12/26/2022]
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27
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Grayson EJ, Bernardes GJL, Chalker JM, Boutureira O, Koeppe JR, Davis BG. A Coordinated Synthesis and Conjugation Strategy for the Preparation of Homogeneous Glycoconjugate Vaccine Candidates. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006327] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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28
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Wilkinson BL, Day S, Malins LR, Apostolopoulos V, Payne RJ. Self-Adjuvanting Multicomponent Cancer Vaccine Candidates Combining Per-Glycosylated MUC1 Glycopeptides and the Toll-like Receptor 2 Agonist Pam3CysSer. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006115] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Wilkinson BL, Day S, Malins LR, Apostolopoulos V, Payne RJ. Self-Adjuvanting Multicomponent Cancer Vaccine Candidates Combining Per-Glycosylated MUC1 Glycopeptides and the Toll-like Receptor 2 Agonist Pam3CysSer. Angew Chem Int Ed Engl 2011; 50:1635-9. [DOI: 10.1002/anie.201006115] [Citation(s) in RCA: 136] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 10/27/2010] [Indexed: 11/09/2022]
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30
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Wagner S, Mersch C, Hoffmann-Röder A. Fluorinated Glycosyl Amino Acids for Mucin-Like Glycopeptide Antigen Analogues. Chemistry 2010; 16:7319-30. [DOI: 10.1002/chem.200903294] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Weinrich D, Köhn M, Jonkheijm P, Westerlind U, Dehmelt L, Engelkamp H, Christianen PCM, Kuhlmann J, Maan JC, Nüsse D, Schröder H, Wacker R, Voges E, Breinbauer R, Kunz H, Niemeyer CM, Waldmann H. Preparation of biomolecule microstructures and microarrays by thiol-ene photoimmobilization. Chembiochem 2010; 11:235-47. [PMID: 20043307 DOI: 10.1002/cbic.200900559] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A mild, fast and flexible method for photoimmobilization of biomolecules based on the light-initiated thiol-ene reaction has been developed. After investigation and optimization of various surface materials, surface chemistries and reaction parameters, microstructures and microarrays of biotin, oligonucleotides, peptides, and MUC1 tandem repeat glycopeptides were prepared with this photoimmobilization method. Furthermore, MUC1 tandem repeat glycopeptide microarrays were successfully used to probe antibodies in mouse serum obtained from vaccinated mice. Dimensions of biomolecule microstructures were shown to be freely controllable through photolithographic techniques, and features down to 5 microm in size covering an area of up to 75x25 mm were created. Use of a confocal laser microscope with a UV laser as UV-light source enabled further reduction of biotin feature size opening access to nanostructured biochips.
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Affiliation(s)
- Dirk Weinrich
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany
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32
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Tang S, Wang Q, Guo Z. Synthesis of a monophosphoryl derivative of Escherichia coli lipid A and its efficient coupling to a tumor-associated carbohydrate antigen. Chemistry 2010; 16:1319-25. [PMID: 19943286 PMCID: PMC2867242 DOI: 10.1002/chem.200902153] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Monophosphoryl lipid A is a safe and potent immunostimulant and vaccine adjuvant, which is potentially useful for the development of effective carbohydrate-based conjugate vaccines. This paper presents a convergent and efficient synthesis of a monophosphoryl derivative of E. coli lipid A that has an alkyne functionality at the reducing end, which is suitable for coupling with various molecules. The coupling of this derivative to an N-modified analogue of tumor-associated antigen GM3 through click chemistry is also presented.
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Affiliation(s)
- Shouchu Tang
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, USA, Fax: (+) 1-313-557-8822
| | - Qianli Wang
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, USA, Fax: (+) 1-313-557-8822
| | - Zhongwu Guo
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, USA, Fax: (+) 1-313-557-8822
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33
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Hughes CC, Trauner D. Concise total synthesis of (-)-frondosin B using a novel palladium-catalyzed cyclization. Angew Chem Int Ed Engl 2009; 41:1569-72. [PMID: 19750668 DOI: 10.1002/1521-3773(20020503)41:9<1569::aid-anie1569>3.0.co;2-8] [Citation(s) in RCA: 135] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chambers C Hughes
- Center for New Directions in Organic Synthesis, Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720-1460, USA
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34
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Corzana F, Busto J, García de Luis M, Jiménez-Barbero J, Avenoza A, Peregrina J. The Nature and Sequence of the Amino Acid Aglycone Strongly Modulates the Conformation and Dynamics Effects of Tn Antigen's Clusters. Chemistry 2009; 15:3863-74. [DOI: 10.1002/chem.200801777] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Westerlind U, Hobel A, Gaidzik N, Schmitt E, Kunz H. Synthetic vaccines consisting of tumor-associated MUC1 glycopeptide antigens and a T-cell epitope for the induction of a highly specific humoral immune response. Angew Chem Int Ed Engl 2008; 47:7551-6. [PMID: 18704911 DOI: 10.1002/anie.200802102] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ulrika Westerlind
- Institut für Organische Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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36
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Westerlind U, Hobel A, Gaidzik N, Schmitt E, Kunz H. Synthetische Vakzine aus tumorassoziierten MUC1-Glycopeptidantigenen und einem T-Zellepitop für die Induzierung einer hochspezifischen humoralen Immunantwort. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802102] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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37
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Wang Z, Gilbert M, Eguchi H, Yu H, Cheng J, Muthana S, Zhou L, Wang PG, Chen X, Huang X. Chemoenzymatic Syntheses of Tumor-Associated Carbohydrate Antigen Globo-H and Stage-Specific Embryonic Antigen 4. Adv Synth Catal 2008; 350:1717-1728. [PMID: 20305750 PMCID: PMC2842016 DOI: 10.1002/adsc.200800129] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Gangliosides have attracted much attention due to their important biological properties. Herein, we report the first chemoenzymatic syntheses of two globo series of ganglioside oligosaccharides, Globo-H 1 and stage-specific embryonic antigen-4 (SSEA-4) 2. The common precursor SSEA-3 pentasaccharide for these two compounds was assembled rapidly using the pre-activation based one-pot glycosylation method. The stereoselectivity in forming the 1,2-cis linkage in SSEA-3 was attributed to a steric buttressing effect of the donor rather than electronic properties of the glycosyl donors. SSEA-3 was then successfully fucosylated by the fucosyltransferase WbsJ and sialylated by sialyltransferases CST-I and PmST1 producing Globo-H and SSEA-4 respectively.
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Affiliation(s)
- Zhen Wang
- Department of Chemistry, The University of Toledo, 2801 W. Bancroft Street, MS 602, Toledo, Ohio 43606 USA
| | - Michel Gilbert
- National Research Council Canada, Institute for Biological Sciences, Glycobiology Program, 100 Sussex Drive, Ottawa, ON K1A 0R6 Canada
| | - Hironobu Eguchi
- The Ohio State University, Departments of Biochemistry and Chemistry, 484 West 12th Avenue, Columbus, OH 43210 USA
| | - Hai Yu
- Department of Chemistry, University of California, One Shields Avenue, Davis, CA USA
| | - Jiansong Cheng
- Department of Chemistry, University of California, One Shields Avenue, Davis, CA USA
| | - Saddam Muthana
- Department of Chemistry, University of California, One Shields Avenue, Davis, CA USA
| | - Luyuan Zhou
- Department of Chemistry, The University of Toledo, 2801 W. Bancroft Street, MS 602, Toledo, Ohio 43606 USA
| | - Peng George Wang
- The Ohio State University, Departments of Biochemistry and Chemistry, 484 West 12th Avenue, Columbus, OH 43210 USA
| | - Xi Chen
- Department of Chemistry, University of California, One Shields Avenue, Davis, CA USA
| | - Xuefei Huang
- Department of Chemistry, The University of Toledo, 2801 W. Bancroft Street, MS 602, Toledo, Ohio 43606 USA
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38
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Dziadek S, Jacques S, Bundle D. A Novel Linker Methodology for the Synthesis of Tailored Conjugate Vaccines Composed of Complex Carbohydrate Antigens and Specific TH‐Cell Peptide Epitopes. Chemistry 2008; 14:5908-17. [DOI: 10.1002/chem.200800065] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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39
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Renaudet O, BenMohamed L, Dasgupta G, Bettahi I, Dumy P. Towards a Self-Adjuvanting Multivalent B and T cell Epitope Containing Synthetic Glycolipopeptide Cancer Vaccine. ChemMedChem 2008; 3:737-41. [DOI: 10.1002/cmdc.200700315] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Miermont A, Barnhill H, Strable E, Lu X, Wall KA, Wang Q, Finn MG, Huang X. Cowpea mosaic virus capsid: a promising carrier for the development of carbohydrate based antitumor vaccines. Chemistry 2008; 14:4939-47. [PMID: 18431733 PMCID: PMC2729768 DOI: 10.1002/chem.200800203] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Immunotherapy targeting tumor cell surface carbohydrates is a promising approach for cancer treatment. However, the low immunogenecity of carbohydrates presents a formidable challenge. We describe here the enhancement of carbohydrate immunogenicity by an ordered display on the surface of the cowpea mosaic virus (CPMV) capsid. The Tn glycan, which is overexpressed on numerous cancer cell surfaces, was selected as the model antigen for our study. Previously it has been shown that it is difficult to induce a strong T cell-dependent immune response against the monomeric form of Tn presented in several ways on different carriers. In this study, we first synthesized Tn antigens derivatized with either a maleimide or a bromoacetamide moiety that was conjugated selectively to a cysteine mutant of CPMV. The glycoconjugate was then injected into mice and pre- and post-immune antibody levels in the mice sera were measured by enzyme-linked immunosorbant assays. High total antibody titers and, more importantly, high IgG titers specific for Tn were obtained in the post-immune day 35 serum, suggesting the induction of T cell-dependent antibody isotype switching by the glycoconjugate. The antibodies generated were able to recognize Tn antigens presented in their native conformations on the surfaces of both MCF-7 breast cancer cells and the multidrug resistant breast cancer cell line NCI-ADR RES. These results suggest that the CPMV capsid can greatly enhance the immunogenicity of weak antigens such as Tn and this can provide a promising tool for the development of carbohydrate based anti-cancer vaccines.
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Affiliation(s)
- Adeline Miermont
- Department of Chemistry, The University of Toledo, 2801 W. Bancroft Street, MS 602, Toledo, OH 43606 (USA), Fax: (+1) 419-530-4033,
| | - Hannah Barnhill
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208 (USA)
| | - Erica Strable
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037 (USA), Fax: (+1) 858-784-8850,
| | - Xiaowei Lu
- Department of Chemistry, The University of Toledo, 2801 W. Bancroft Street, MS 602, Toledo, OH 43606 (USA), Fax: (+1) 419-530-4033,
| | - Katherine A. Wall
- Department of Medicinal and Biological Chemistry, The University of Toledo, 2801 W. Bancroft Street, MS 606, Toledo, OH 43606 (USA)
| | - Qian Wang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208 (USA)
| | - M. G. Finn
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, CA 92037 (USA), Fax: (+1) 858-784-8850,
| | - Xuefei Huang
- Department of Chemistry, The University of Toledo, 2801 W. Bancroft Street, MS 602, Toledo, OH 43606 (USA), Fax: (+1) 419-530-4033,
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41
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Yu H, Huang S, Chokhawala H, Sun M, Zheng H, Chen X. Highly efficient chemoenzymatic synthesis of naturally occurring and non-natural alpha-2,6-linked sialosides: a P. damsela alpha-2,6-sialyltransferase with extremely flexible donor-substrate specificity. Angew Chem Int Ed Engl 2007; 45:3938-44. [PMID: 16721893 PMCID: PMC2728590 DOI: 10.1002/anie.200600572] [Citation(s) in RCA: 189] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hai Yu
- Department of Chemistry, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA.
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42
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Wittrock S, Becker T, Kunz H. Synthetic Vaccines of Tumor-Associated Glycopeptide Antigens by Immune-Compatible Thioether Linkage to Bovine Serum Albumin. Angew Chem Int Ed Engl 2007; 46:5226-30. [PMID: 17546719 DOI: 10.1002/anie.200700964] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sven Wittrock
- Institut für Organische Chemie, Universität Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
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43
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Wittrock S, Becker T, Kunz H. Synthetische Vakzine aus tumorassoziierten Glycopeptidantigenen durch immunkompatible Verankerung über Thioether an Rinderserumalbumin. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200700964] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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44
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Dziadek S, Griesinger C, Kunz H, Reinscheid UM. Synthesis and structural model of an alpha(2,6)-sialyl-t glycosylated MUC1 eicosapeptide under physiological conditions. Chemistry 2007; 12:4981-93. [PMID: 16642533 DOI: 10.1002/chem.200600144] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
To study the effect of O-glycosylation on the conformational propensities of a peptide backbone, a 20-residue peptide (GSTAPPAHGVTSAPDTRPAP) representing the full length tandem repeat sequence of the human mucin MUC1 and its analogue glycosylated with the (2,6)-sialyl-T antigen on Thr11, were prepared and investigated by NMR and molecular modeling. The peptides contain both the GVTSAP sequence, which is an effective substrate for GalNAc transferases, and the PDTRP fragment, a known epitope recognized by several anti-MUC1 monoclonal antibodies. It has been shown that glycosylation of threonine in the GVTSAP sequence is a prerequisite for subsequent glycosylation of the serine at GVTSAP. Furthermore, carbohydrates serve as additional epitopes for MUC1 antibodies. Investigation of the solution structure of the sialyl-T glycoeicosapeptide in a H(2)O/D(2)O mixture (9:1) under physiological conditions (25 degrees C and pH 6.5) revealed that the attachment of the saccharide side-chain affects the conformational equilibrium of the peptide backbone near the glycosylated Thr11 residue. For the GVTSA region, an extended, rod-like secondary structure was found by restrained molecular dynamics simulation. The APDTR region formed a turn structure which is more flexibly organized. Taken together, the joined sequence GVTSAPDTR represents the largest structural model of MUC1 derived glycopeptides analyzed so far.
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Affiliation(s)
- Sebastian Dziadek
- Institut für Organische Chemie der Universität Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
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45
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Wu B, Chen J, Warren JD, Chen G, Hua Z, Danishefsky SJ. Building complex glycopeptides: Development of a cysteine-free native chemical ligation protocol. Angew Chem Int Ed Engl 2007; 45:4116-25. [PMID: 16710874 DOI: 10.1002/anie.200600538] [Citation(s) in RCA: 130] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Bin Wu
- The Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, NY 10021, USA
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46
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Dondoni A. Triazole: the Keystone in Glycosylated Molecular Architectures Constructed by a Click Reaction. Chem Asian J 2007; 2:700-8. [PMID: 17464957 DOI: 10.1002/asia.200700015] [Citation(s) in RCA: 206] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The copper(I)-catalyzed modern version of the Huisgen-type azide-alkyne cycloaddition to give a 1,4-disubstituted 1,2,3-triazole unit is introduced as a powerful ligation method for glycoconjugation. Owing to its high chemoselectivity and tolerance of a variety of reaction conditions, this highly atom-economic and efficient coupling reaction is especially useful for the effective construction of complex glycosylated structures such as clusters, dendrimers, polymers, peptides, and macrocycles. In all cases the triazole ring plays a key role by locking into position the various parts of these molecular architectures. The examples reported and briefly discussed in this short review highlight the use of this reaction in carbohydrate chemistry and pave the way to further developments and applications.
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Affiliation(s)
- Alessandro Dondoni
- Dipartimento di Chimica, Laboratorio di Chimica Organica, Università di Ferrara, Via L. Borsari 46, I-44100 Ferrara, Italy.
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47
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Geiger J, Reddy BG, Winterfeld GA, Weber R, Przybylski M, Schmidt RR. Glycal Glycosylation and 2-Nitroglycal Concatenation, a Powerful Combination for Mucin Core Structure Synthesis. J Org Chem 2007; 72:4367-77. [PMID: 17503844 DOI: 10.1021/jo061670b] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A 3,4-O-unprotected galactal derivative having bulky 6-O-TIPS protection (compound 2) could be regioselectively 3-O-glycosylated with O-(galactopyranosyl) trichloroacetimidates; depending on the protecting group pattern stereoselectively alpha- and beta-linked disaccharides were obtained. With O-(2-azido-2-deoxyglucopyransyl) trichloroacetimidate as donor (compound 10A), glycosylation of 2 and of a 6-O-unprotected galactal derivative led in acetonitrile as solvent exclusively to a beta(1-3)- and a beta(1-6)-linked disaccharide, respectively. Nitration of the galactal moieties of the saccharides followed by Michael-type addition of serine and threonine derivatives (7a,b) installed the alpha-galacto-configuration, thus readily furnishing O-glycosyl amino acid building blocks for the incorporation of core 1, core 2, core 3, core 6, and core 8 structures into glycopeptides. 2-Nitrogalactal and 2-nitroglucal derivatives could be also successfully employed in glycoside bond formation via Michael-type addition in a reiterative manner, affording the corresponding core 5, core 7, and core 6 building blocks. In this approach, highly stereoselective glycoside bond formations were based exclusively on Michael-type addition to the nitro-enol ether moiety of the 2-nitroglycals. Hence, 2-nitroglycals are versatile intermediates for base-catalyzed glycoside bond formation.
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Affiliation(s)
- Jürgen Geiger
- Fachbereich Chemie, Universität Konstanz, Fach M 725, D - 78457 Konstanz, Germany
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48
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Hellmuth H, Hillringhaus L, Höbbel S, Kralj S, Dijkhuizen L, Seibel J. Highly Efficient Chemoenzymatic Synthesis of Novel Branched Thiooligosaccharides by Substrate Direction with Glucansucrases. Chembiochem 2007; 8:273-6. [PMID: 17219452 DOI: 10.1002/cbic.200600444] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hendrik Hellmuth
- Technical Chemistry, Department for Carbohydrate Technology, Technical University Braunschweig, Hans-Sommer Strasse 10, 38106 Braunschweig, Germany
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49
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Buskas T, Ingale S, Boons GJ. Towards a fully synthetic carbohydrate-based anticancer vaccine: synthesis and immunological evaluation of a lipidated glycopeptide containing the tumor-associated tn antigen. Angew Chem Int Ed Engl 2006; 44:5985-8. [PMID: 16108081 DOI: 10.1002/anie.200501818] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Therese Buskas
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, GA 30602, USA.
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50
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Buskas T, Li Y, Boons GJ. Synthesis of a dimeric Lewis antigen and the evaluation of the epitope specificity of antibodies elicited in mice. Chemistry 2006; 11:5457-67. [PMID: 16013028 DOI: 10.1002/chem.200500412] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The Lewis(y)-Lewis(x) heptasaccharide, modified by an artificial aminopropyl spacer, was synthesized by an approach that employed two orthogonally protected lactosamine building blocks. A p-(benzoyl)-benzyl glycoside was used as a novel anomeric protecting group, which could be selectively removed at a late stage in the synthesis, thus offering the benefit of enhanced flexibility. The artificial aminopropyl moiety was modified by a thioacetyl group, which allowed an efficient conjugation to keyhole limpet hemocyanin (KLH) that had been activated with electrophilic 3-(bromoacetamido)-propionyl groups. Mice were immunized with the Le(y)Le(x)-BrAc-KLH antigen. Analysis of the sera by ELISA established that a strong helper T-cell immune response was raised against the Le(y)Le(x) saccharide. Further ELISA analysis showed that the titer for monomeric Le(y) tetrasaccharide was tenfold lower whereas recognition of the Le(x) trisaccharide was negligible.
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Affiliation(s)
- Therese Buskas
- Complex Carbohydrate Research Center, 315 Riverbend Road, Athens, GA 30602-4712, USA
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