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Gu W, Huang J, Lu Y, Lin W, Xu W, Chen FJ. Synthesis of Glycoconjugates through Chlorooxime-Thiol Conjugation. J Org Chem 2024; 89:6364-6370. [PMID: 38650458 DOI: 10.1021/acs.joc.4c00356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Introducing glycans represents an efficient chemical approach to improve the pharmacological properties of therapeutic biomolecules. Herein, we report an efficient synthesis of glycoconjugates through chlorooxime-thiol conjugation. The reactive glycosyl chlorooximes, derived from pyranoses or furanoses, readily couple to a wide range of thiol-containing substrates, including peptides, sugars, and thiophenols. This method features mild reaction conditions and fast kinetics. Capability for aqueous media and gram-scale synthesis demonstrates the potential of this method in the bioconjugation of saccharides with biologically active molecules.
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Affiliation(s)
- Wang Gu
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian, P. R. China
| | - Jingrong Huang
- College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
| | - Yichi Lu
- College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
| | - Wanzhen Lin
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian, P. R. China
| | - Wei Xu
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian, P. R. China
| | - Fa-Jie Chen
- College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China
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2
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Jiang X, Bai J, Zhang H, Yuan J, Lu G, Wang Y, Jiang L, Liu B, Huang D, Feng L. Development of an O-polysaccharide based recombinant glycoconjugate vaccine in engineered E. coli against ExPEC O1. Carbohydr Polym 2022; 277:118796. [PMID: 34893224 DOI: 10.1016/j.carbpol.2021.118796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 10/14/2021] [Accepted: 10/18/2021] [Indexed: 11/19/2022]
Abstract
Extraintestinal pathogenic Escherichia coli O1 is a frequently identified serotype that causes serious infections and is often refractory to antimicrobial therapy. Glycoconjugate vaccine represents a promising measure to reduce ExPEC infections. Herein, we designed an O1-specific glyco-optimized chassis strain for manufacture of O-polysaccharide (OPS) antigen and OPS-based bioconjugate. Specifically, OPS and OPS-based glycoprotein were synthesized in glyco-optimized chassis strain, when compared to the unmeasurable level of the parent strain. The optimal expression of oligosaccharyltransferase and carrier protein further improved the titer. MS analysis elucidated the correct structure of resulting bioconjugate at routine and unreported glycosylation sequons of carrier protein, with a higher glycosylation efficiency. Finally, purified bioconjugate stimulated mouse to generate specific IgG antibodies and protected them against virulent ExPEC O1 challenge. The plug-and-play glyco-optimized platform is suitable for bioconjugate synthesis, thus providing a potential platform for future medical applications.
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Affiliation(s)
- Xiaolong Jiang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China
| | - Jing Bai
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China
| | - Huijing Zhang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China
| | - Jian Yuan
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China
| | - Gege Lu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China
| | - Yuhui Wang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China
| | - Lingyan Jiang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China
| | - Bin Liu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China
| | - Di Huang
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China.
| | - Lu Feng
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, Nankai University, Tianjin, PR China; TEDA Institute of Biological Sciences and Biotechnology, Tianjin Key Laboratory of Microbial Functional Genomics, Nankai University, Tianjin, PR China.
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3
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Shivatare SS, Rachel Cheng TJ, Cheng YY, Shivatare VS, Tsai TI, Chuang HY, Wu CY, Wong CH. Immunogenicity Evaluation of N-Glycans Recognized by HIV Broadly Neutralizing Antibodies. ACS Chem Biol 2021; 16:2016-2025. [PMID: 34649433 PMCID: PMC8526942 DOI: 10.1021/acschembio.1c00375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
While the improved treatment of human immunodeficiency virus type 1 (HIV-1) infection is available, the development of an effective and safe prophylactic vaccine against HIV-1 is still an unrealized goal. Encouragingly, the discovery of broadly neutralizing antibodies (bNAbs) from HIV-1 positive patients that are capable of neutralizing a broad spectrum of HIV-1 isolates of various clades has accelerated the progress of vaccine development in the past few years. Some of these bNAbs recognize the N-glycans on the viral surface gp120 glycoprotein. We have been interested in using the glycan epitopes recognized by bNAbs for the development of vaccines to elicit bNAb-like antibodies with broadly neutralizing activities. Toward this goal, we have identified novel hybrid-type structures with subnanomolar avidity toward several bNAbs including PG16, PGT121, PGT128-3C, 2G12, VRC13, VRC-PG05, VRC26.25, VRC26.09, PGDM1400, 35O22, and 10-1074. Here, we report the immunogenicity evaluation of a novel hybrid glycan conjugated to carrier DTCRM197, a nontoxic mutant of the diphtheria toxin, for immunization in mice. Our results indicated that the IgG response was mainly against the chitobiose motif with nonspecific binding to a panel of N-glycans with reducing end GlcNAc-GlcNAc (chitobiose) printed on the glass slides. However, the IgM response was mainly toward the reducing end GlcNAc moiety. We further used the glycoconjugates of Man3GlcNAc2, Man5GlcNAc2, and Man9GlcNAc2 glycans for immunization, and a similar specificity pattern was observed. These findings suggest that the immunogenicity of chitobiose may interfere with the outcome of N-glycan-based vaccines, and modification may be necessary to increase the immunogenicity of the entire N-glycan epitope.
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Affiliation(s)
- Sachin S. Shivatare
- The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Ting-Jen Rachel Cheng
- Genomics Research Center, Academia Sinica, 128 Academia Road, Section 2, Taipei 115, Taiwan
| | - Yang-Yu Cheng
- Genomics Research Center, Academia Sinica, 128 Academia Road, Section 2, Taipei 115, Taiwan
| | - Vidya S. Shivatare
- The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Tsung-I Tsai
- The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
| | - Hong-Yang Chuang
- Genomics Research Center, Academia Sinica, 128 Academia Road, Section 2, Taipei 115, Taiwan
| | - Chung-Yi Wu
- Genomics Research Center, Academia Sinica, 128 Academia Road, Section 2, Taipei 115, Taiwan
| | - Chi-Huey Wong
- The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037
- Genomics Research Center, Academia Sinica, 128 Academia Road, Section 2, Taipei 115, Taiwan
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Stonik VA, Kolesnikova SA. Malabaricane and Isomalabaricane Triterpenoids, Including Their Glycoconjugated Forms. Mar Drugs 2021; 19:327. [PMID: 34198756 PMCID: PMC8228503 DOI: 10.3390/md19060327] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/25/2021] [Accepted: 06/03/2021] [Indexed: 12/22/2022] Open
Abstract
In this review, we discuss structural diversity, taxonomic distribution, biological activities, biogenesis, and synthesis of a rare group of terpenoids, the so-called malabaricane and isomalabaricane triterpenoids, as well as some compounds derived from them. Representatives of these groups were found in some higher and lower terrestrial plants, as well as in some fungi, and in a relatively small group of marine sponges. The skeletal systems of malabaricanes and isomalabaricanes are similar to each other, but differ principally in the stereochemistry of their tricyclic core fragments, consisting of two six-membered and one five-membered rings. Evolution of these triterpenoids provides variety of rearranged, oxidized, and glycoconjugated products. These natural compounds have attracted a lot of attention for their biosynthetic origin and biological activity, especially for their extremely high cytotoxicity against tumor cells as well as promising neuroprotective properties in nanomolar concentrations.
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Affiliation(s)
- Valentin A. Stonik
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of Russian Academy of Sciences, Pr. 100-let Vladivostoku 159, 690022 Vladivostok, Russia
- School of Natural Sciences, Far Eastern Federal University, Sukhanova Str. 8, 690000 Vladivostok, Russia
| | - Sophia A. Kolesnikova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of Russian Academy of Sciences, Pr. 100-let Vladivostoku 159, 690022 Vladivostok, Russia
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Serpico L, De Nisco M, Cermola F, Manfra M, Pedatella S. Stereoselective Synthesis of Selenium-Containing Glycoconjugates via the Mitsunobu Reaction. Molecules 2021; 26:molecules26092541. [PMID: 33925409 PMCID: PMC8123786 DOI: 10.3390/molecules26092541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/21/2021] [Accepted: 04/23/2021] [Indexed: 11/16/2022] Open
Abstract
A simple and efficient route for the synthesis of new glycoconjugates has been developed. The approach acts as a model for a mini-library of compounds with a deoxy-selenosugar core joined to a polyphenolic moiety with well-known antioxidant properties. An unexpected stereocontrol detected in the Mitsunobu key reaction led to the most attractive product showing a natural d-configuration. Thus, we were able to obtain the target molecules from the commercially available d-ribose via a shorter and convenient sequence of reactions.
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Affiliation(s)
- Luigia Serpico
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia 4, I-80126 Napoli, Italy; (L.S.); (F.C.); (S.P.)
| | - Mauro De Nisco
- Department of Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, I-85100 Potenza, Italy;
- Correspondence:
| | - Flavio Cermola
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia 4, I-80126 Napoli, Italy; (L.S.); (F.C.); (S.P.)
| | - Michele Manfra
- Department of Sciences, University of Basilicata, Via dell’Ateneo Lucano 10, I-85100 Potenza, Italy;
| | - Silvana Pedatella
- Department of Chemical Sciences, University of Napoli Federico II, Via Cintia 4, I-80126 Napoli, Italy; (L.S.); (F.C.); (S.P.)
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Mousavifar L, Roy R. Design, Synthetic Strategies, and Therapeutic Applications of Heterofunctional Glycodendrimers. Molecules 2021; 26:2428. [PMID: 33921945 PMCID: PMC8122629 DOI: 10.3390/molecules26092428] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 12/11/2022] Open
Abstract
Glycodendrimers have attracted considerable interest in the field of dendrimer sciences owing to their plethora of implications in biomedical applications. This is primarily due to the fact that cell surfaces expose a wide range of highly diversified glycan architectures varying by the nature of the sugars, their number, and their natural multiantennary structures. This particular situation has led to cancer cell metastasis, pathogen recognition and adhesion, and immune cell communications that are implicated in vaccine development. The diverse nature and complexity of multivalent carbohydrate-protein interactions have been the impetus toward the syntheses of glycodendrimers. Since their inception in 1993, chemical strategies toward glycodendrimers have constantly evolved into highly sophisticated methodologies. This review constitutes the first part of a series of papers dedicated to the design, synthesis, and biological applications of heterofunctional glycodendrimers. Herein, we highlight the most common synthetic approaches toward these complex molecular architectures and present modern applications in nanomolecular therapeutics and synthetic vaccines.
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Affiliation(s)
| | - René Roy
- Glycosciences and Nanomaterial Laboratory, Université du Québec à Montréal, P.O. Box 8888, Succ. Centre-Ville, Montréal, QC H3C 3P8, Canada;
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7
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Illyés TZ, Malinovská L, Rőth E, Tóth B, Farkas B, Korsák M, Wimmerová M, Kövér KE, Csávás M. Synthesis of Tetravalent Thio- and Selenogalactoside-Presenting Galactoclusters and Their Interactions with Bacterial Lectin PA-IL from Pseudomonas aeruginosa. Molecules 2021; 26:molecules26030542. [PMID: 33494330 PMCID: PMC7865631 DOI: 10.3390/molecules26030542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/18/2021] [Accepted: 01/18/2021] [Indexed: 11/17/2022] Open
Abstract
Synthesis of tetravalent thio- and selenogalactopyranoside-containing glycoclusters using azide-alkyne click strategy is presented. Prepared compounds are potential ligands of Pseudomonas aeruginosa lectin PA-IL. P. aeruginosa is an opportunistic human pathogen associated with cystic fibrosis, and PA-IL is one of its virulence factors. The interactions of PA-IL and tetravalent glycoconjugates were investigated using hemagglutination inhibition assay and compared with mono- and divalent galactosides (propargyl 1-thio- and 1-seleno-β-d-galactopyranoside, digalactosyl diselenide and digalactosyl disulfide). The lectin-carbohydrate interactions were also studied by saturation transfer difference NMR technique. Both thio- and seleno-tetravalent glycoconjugates were able to inhibit PA-IL significantly better than simple d-galactose or their intermediate compounds from the synthesis.
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Affiliation(s)
- Tünde Zita Illyés
- Department of Organic Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary;
| | - Lenka Malinovská
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic; (L.M.); (M.K.); (M.W.)
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Erzsébet Rőth
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (E.R.); (B.T.)
| | - Boglárka Tóth
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (E.R.); (B.T.)
| | - Bence Farkas
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (B.F.); (K.E.K.)
| | - Marek Korsák
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic; (L.M.); (M.K.); (M.W.)
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Michaela Wimmerová
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic; (L.M.); (M.K.); (M.W.)
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic
| | - Katalin E. Kövér
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (B.F.); (K.E.K.)
- Research Group for Molecular Recognition and Interaction, Hungarian Academy of Sciences, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Magdolna Csávás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (E.R.); (B.T.)
- Research Group for Molecular Recognition and Interaction, Hungarian Academy of Sciences, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
- Correspondence: ; Tel.: +36-52512900/22395
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Grymel M, Pastuch-Gawołek G, Lalik A, Zawojak M, Boczek S, Krawczyk M, Erfurt K. Glycoconjugation of Betulin Derivatives Using Copper-Catalyzed 1,3-Dipolar Azido-Alkyne Cycloaddition Reaction and a Preliminary Assay of Cytotoxicity of the Obtained Compounds. Molecules 2020; 25:molecules25246019. [PMID: 33353244 PMCID: PMC7766341 DOI: 10.3390/molecules25246019] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/14/2020] [Accepted: 12/16/2020] [Indexed: 02/06/2023] Open
Abstract
Pentacyclic lupane-type triterpenoids, such as betulin and its synthetic derivatives, display a broad spectrum of biological activity. However, one of the major drawbacks of these compounds as potential therapeutic agents is their high hydrophobicity and low bioavailability. On the other hand, the presence of easily transformable functional groups in the parent structure makes betulin have a high synthetic potential and the ability to form different derivatives. In this context, research on the synthesis of new betulin derivatives as conjugates of naturally occurring triterpenoid with a monosaccharide via a linker containing a heteroaromatic 1,2,3-triazole ring was presented. It has been shown that copper-catalyzed 1,3-dipolar azide-alkyne cycloaddition reaction (CuAAC) provides an easy and effective way to synthesize new molecular hybrids based on natural products. The chemical structures of the obtained betulin glycoconjugates were confirmed by spectroscopic analysis. Cytotoxicity of the obtained compounds was evaluated on a human breast adenocarcinoma cell line (MCF-7) and colorectal carcinoma cell line (HCT 116). The obtained results show that despite the fact that the obtained betulin glycoconjugates do not show interesting antitumor activity, the idea of adding a sugar unit to the betulin backbone may, after some modifications, turn out to be correct and allow for the targeted transport of betulin glycoconjugates into the tumor cells.
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Affiliation(s)
- Mirosława Grymel
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (G.P.-G.); (M.Z.); (S.B.); (M.K.)
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland;
- Correspondence: ; Tel.: +48-032-237-1873
| | - Gabriela Pastuch-Gawołek
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (G.P.-G.); (M.Z.); (S.B.); (M.K.)
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland;
| | - Anna Lalik
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland;
- Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Mateusz Zawojak
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (G.P.-G.); (M.Z.); (S.B.); (M.K.)
| | - Seweryn Boczek
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (G.P.-G.); (M.Z.); (S.B.); (M.K.)
| | - Monika Krawczyk
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (G.P.-G.); (M.Z.); (S.B.); (M.K.)
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland;
| | - Karol Erfurt
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland;
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Krylov VB, Nifantiev NE. Synthetic carbohydrate based anti-fungal vaccines. Drug Discov Today Technol 2020; 35-36:35-43. [PMID: 33388126 DOI: 10.1016/j.ddtec.2020.11.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/30/2020] [Accepted: 11/05/2020] [Indexed: 06/12/2023]
Affiliation(s)
- Vadim B Krylov
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
| | - Nikolay E Nifantiev
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia.
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10
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Bigdelou P, Chan KK, Tang J, Yu KN, Whited J, Wang D, Lee MY, Sun XL. High-throughput multiplex assays with mouse macrophages on pillar plate platforms. Exp Cell Res 2020; 396:112243. [PMID: 32835658 PMCID: PMC7572780 DOI: 10.1016/j.yexcr.2020.112243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/08/2020] [Accepted: 08/19/2020] [Indexed: 12/12/2022]
Abstract
It is challenging to rapidly identify immune responses that reflect the state and capability of immune cells due to complex heterogeneity of immune cells and their plasticity to pathogens and modulating molecules. Thus, high-throughput and easy-to-use cell culture and analysis platforms are highly desired for characterizing complex immune responses and elucidating their underlying mechanisms as well. In response to this need, we have developed a micropillar chip and a 384-pillar plate, printed mouse macrophage, RAW 264.7 cell line in alginate on the pillar plate platforms, and established multiplex cell-based assays to rapidly measure cell viability, expression of cell surface markers, and secretion of cytokines upon stimulation with model compound, lipopolysaccharide (LPS), as well as synthetic N-glycan polymers that mimic native glycoconjugates and could bind to lectin receptors on RAW 264.7 cells. Interestingly, changes in RAW 264.7 cell viability, expression levels of cell surface makers, and release of cytokines measured from the pillar plate platforms in the presence and absence of LPS were well correlated with those obtained from their counterpart, the 96-well plate with 2D-cultured macrophages. With this approach, we identified that α2,3-linked N-sialyllactose polymer has significant macrophage modulation activity among the N-glycan polymers tested. Therefore, we successfully demonstrated that our pillar plate platforms with 3D-cultured macrophages can streamline immune cell imaging and analysis in high throughput in response to compound stimulation. We envision that the pillar plate platforms could potentially be used for rapid characterization of immune cell responses and for screening immune cell-modulating molecules.
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Affiliation(s)
- Parnian Bigdelou
- Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, OH, 44115, USA
| | - Ka Keung Chan
- Department of Chemistry and Center of Gene Regulation of Health and Disease (GRHD), Cleveland State University, Cleveland, OH, 44115, USA
| | - Jinshan Tang
- Department of Chemistry and Center of Gene Regulation of Health and Disease (GRHD), Cleveland State University, Cleveland, OH, 44115, USA; Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, West 601, Huangpu Avenue, Guangzhou, PR China
| | - Kyeong-Nam Yu
- Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, OH, 44115, USA
| | - Joshua Whited
- Department of Chemistry and Center of Gene Regulation of Health and Disease (GRHD), Cleveland State University, Cleveland, OH, 44115, USA
| | - Dan Wang
- Department of Chemistry and Center of Gene Regulation of Health and Disease (GRHD), Cleveland State University, Cleveland, OH, 44115, USA
| | - Moo-Yeal Lee
- Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, OH, 44115, USA.
| | - Xue-Long Sun
- Department of Chemical & Biomedical Engineering, Cleveland State University, Cleveland, OH, 44115, USA; Department of Chemistry and Center of Gene Regulation of Health and Disease (GRHD), Cleveland State University, Cleveland, OH, 44115, USA.
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11
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Krawczyk M, Pastuch-Gawołek G, Hadasik A, Erfurt K. 8-Hydroxyquinoline Glycoconjugates Containing Sulfur at the Sugar Anomeric Position-Synthesis and Preliminary Evaluation of Their Cytotoxicity. Molecules 2020; 25:E4174. [PMID: 32933091 PMCID: PMC7570910 DOI: 10.3390/molecules25184174] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/01/2020] [Accepted: 09/09/2020] [Indexed: 02/07/2023] Open
Abstract
One of the main factors limiting the effectiveness of many drugs is the difficulty of their delivery to their target site in the cell and achieving the desired therapeutic dose. Moreover, the accumulation of the drug in healthy tissue can lead to serious side effects. The way to improve the selectivity of a drug to the cancer cells seems to be its conjugation with a sugar molecule, which should facilitate its selective transport through GLUT transporters (glucose transporters), whose overexpression is seen in some types of cancer. This was the idea behind the synthesis of 8-hydroxyquinoline (8-HQ) derivative glycoconjugates, for which 1-thiosugar derivatives were used as sugar moiety donors. It was expected that the introduction of a sulfur atom instead of an oxygen atom into the anomeric position of the sugar would increase the stability of the obtained glycoconjugates against untimely hydrolytic cleavage. The anticancer activity of new compounds was determined based on the results of the MTT cytotoxicity tests. Because of the assumption that the activity of this type of compounds was based on metal ion chelation, the effect of the addition of copper ions on cell proliferation was tested for some of them. It turned out that cancer cells treated with glycoconjugates in the presence of Cu2+ had a much slower growth rate compared to cells treated with free glycoconjugates in the absence of copper. The highest cytotoxic activity of the compounds was observed against the MCF-7 cell line.
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Affiliation(s)
- Monika Krawczyk
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (G.P.-G.); (A.H.)
- Biotechnology Centre, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland
| | - Gabriela Pastuch-Gawołek
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (G.P.-G.); (A.H.)
- Biotechnology Centre, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland
| | - Agnieszka Hadasik
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland; (G.P.-G.); (A.H.)
| | - Karol Erfurt
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland;
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12
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Enotarpi J, Tontini M, Balocchi C, van der Es D, Auberger L, Balducci E, Carboni F, Proietti D, Casini D, Filippov DV, Overkleeft HS, van der Marel GA, Colombo C, Romano MR, Berti F, Costantino P, Codeé JDC, Lay L, Adamo R. A stabilized glycomimetic conjugate vaccine inducing protective antibodies against Neisseria meningitidis serogroup A. Nat Commun 2020; 11:4434. [PMID: 32895393 PMCID: PMC7477203 DOI: 10.1038/s41467-020-18279-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 08/09/2020] [Indexed: 12/15/2022] Open
Abstract
Neisseria meningitidis serogroup A capsular polysaccharide (MenA CPS) consists of (1 → 6)-2-acetamido-2-deoxy-α-D-mannopyranosyl phosphate repeating units, O-acetylated at position C3 or C4. Glycomimetics appear attractive to overcome the CPS intrinsic lability in physiological media, due to cleavage of the phosphodiester bridge, and to develop a stable vaccine with longer shelf life in liquid formulation. Here, we generate a series of non-acetylated carbaMenA oligomers which are proven more stable than the CPS. An octamer (DP8) inhibits the binding of a MenA specific bactericidal mAb and polyclonal serum to the CPS, and is selected for further in vivo testing. However, its CRM197 conjugate raises murine antibodies towards the non-acetylated CPS backbone, but not the natural acetylated form. Accordingly, random O-acetylation of the DP8 is performed, resulting in a structure (Ac-carbaMenA) showing improved inhibition of anti-MenA CPS antibody binding and, after conjugation to CRM197, eliciting anti-MenA protective murine antibodies, comparably to the vaccine benchmark.
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MESH Headings
- Animals
- Antibodies, Bacterial/analysis
- Antibodies, Neutralizing/chemistry
- Bacterial Capsules/immunology
- Biomimetics/methods
- Glycoconjugates/chemical synthesis
- Glycoconjugates/immunology
- Mice
- Neisseria meningitidis, Serogroup A/chemistry
- Neisseria meningitidis, Serogroup A/drug effects
- Neisseria meningitidis, Serogroup A/immunology
- Polysaccharides, Bacterial/chemical synthesis
- Polysaccharides, Bacterial/chemistry
- Polysaccharides, Bacterial/immunology
- Vaccines, Conjugate/chemistry
- Vaccines, Conjugate/microbiology
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Affiliation(s)
- Jacopo Enotarpi
- Department of Chemistry and CRC Polymeric Materials (LaMPo), University of Milan, Milan, Italy
- Department of Bioorganic Synthesis, Leiden University, 2333, Leiden, The Netherlands
| | | | | | - Daan van der Es
- Department of Bioorganic Synthesis, Leiden University, 2333, Leiden, The Netherlands
| | - Ludovic Auberger
- Department of Chemistry and CRC Polymeric Materials (LaMPo), University of Milan, Milan, Italy
| | | | | | | | | | - Dmitri V Filippov
- Department of Bioorganic Synthesis, Leiden University, 2333, Leiden, The Netherlands
| | - Hermen S Overkleeft
- Department of Bioorganic Synthesis, Leiden University, 2333, Leiden, The Netherlands
| | | | - Cinzia Colombo
- Department of Chemistry and CRC Polymeric Materials (LaMPo), University of Milan, Milan, Italy
| | | | | | | | - Jeroen D C Codeé
- Department of Bioorganic Synthesis, Leiden University, 2333, Leiden, The Netherlands.
| | - Luigi Lay
- Department of Chemistry and CRC Polymeric Materials (LaMPo), University of Milan, Milan, Italy.
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13
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Annunziata A, Amoresano A, Cucciolito ME, Esposito R, Ferraro G, Iacobucci I, Imbimbo P, Lucignano R, Melchiorre M, Monti M, Scognamiglio C, Tuzi A, Monti DM, Merlino A, Ruffo F. Pt(II) versus Pt(IV) in Carbene Glycoconjugate Antitumor Agents: Minimal Structural Variations and Great Performance Changes. Inorg Chem 2020; 59:4002-4014. [PMID: 32129608 PMCID: PMC7997382 DOI: 10.1021/acs.inorgchem.9b03683] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Indexed: 12/20/2022]
Abstract
Octahedral Pt(IV) complexes (2Pt-R) containing a glycoconjugate carbene ligand were prepared and fully characterized. These complexes are structural analogues to the trigonal bipyramidal Pt(II) species (1Pt-R) recently described. Thus, an unprecedented direct comparison between the biological properties of Pt compounds with different oxidation states and almost indistinguishable structural features was performed. The stability profile of the novel Pt(IV) compounds in reference solvents was determined and compared to that of the analogous Pt(II) complexes. The uptake and antiproliferative activities of 2Pt-R and 1Pt-R were evaluated on the same panel of cell lines. DNA and protein binding properties were assessed using human serum albumin, the model protein hen egg white lysozyme, and double stranded DNA model systems by a variety of experimental techniques, including UV-vis absorption spectroscopy, fluorescence, circular dichroism, and electrospray ionization mass spectrometry. Although the compounds present similar structures, their in-solution stability, cellular uptake, and DNA binding properties are diverse. These differences may represent the basis of their different cytotoxicity and biological activity.
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Affiliation(s)
- Alfonso Annunziata
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Angela Amoresano
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Maria Elena Cucciolito
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
- CIRCC, via Celso Ulpiani
27, 70126 Bari, Italy
| | - Roberto Esposito
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
- CIRCC, via Celso Ulpiani
27, 70126 Bari, Italy
| | - Giarita Ferraro
- Dipartimento di Chimica Ugo Schiff, Università di Firenze, Sesto Fiorentino, Florence 50019, Italy
| | - Ilaria Iacobucci
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Paola Imbimbo
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Rosanna Lucignano
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | | | - Maria Monti
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Chiara Scognamiglio
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Angela Tuzi
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Daria Maria Monti
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Antonello Merlino
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
| | - Francesco Ruffo
- Dipartimento di
Scienze Chimiche, Università di Napoli
Federico II, Complesso Universitario di Monte S. Angelo, via Cintia 21, 80126 Napoli, Italy
- CIRCC, via Celso Ulpiani
27, 70126 Bari, Italy
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14
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Qin Y, Li P. Antimicrobial Chitosan Conjugates: Current Synthetic Strategies and Potential Applications. Int J Mol Sci 2020; 21:E499. [PMID: 31941068 PMCID: PMC7013974 DOI: 10.3390/ijms21020499] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 12/31/2019] [Accepted: 01/10/2020] [Indexed: 12/13/2022] Open
Abstract
As a natural polysaccharide, chitosan possesses good biocompatibility, biodegradability and biosafety. Its hydroxyl and amino groups make it an ideal carrier material in the construction of polymer-drug conjugates. In recent years, various synthetic strategies have been used to couple chitosan with active substances to obtain conjugates with diverse structures and unique functions. In particular, chitosan conjugates with antimicrobial activity have shown great application prospects in the fields of medicine, food, and agriculture in recent years. Hence, we will place substantial emphasis on the synthetic approaches for preparing chitosan conjugates and their antimicrobial applications, which are not well summarized. Meanwhile, the challenges, limitations, and prospects of antimicrobial chitosan conjugates are described and discussed.
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Affiliation(s)
- Yukun Qin
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
| | - Pengcheng Li
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Drugs and Bioproducts, Pilot National Laboratory for Marine Science and Technology (Qingdao), No. 1 Wenhai Road, Qingdao 266237, China
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15
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Mestrom L, Przypis M, Kowalczykiewicz D, Pollender A, Kumpf A, Marsden SR, Bento I, Jarzębski AB, Szymańska K, Chruściel A, Tischler D, Schoevaart R, Hanefeld U, Hagedoorn PL. Leloir Glycosyltransferases in Applied Biocatalysis: A Multidisciplinary Approach. Int J Mol Sci 2019; 20:ijms20215263. [PMID: 31652818 PMCID: PMC6861944 DOI: 10.3390/ijms20215263] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 01/13/2023] Open
Abstract
Enzymes are nature’s catalyst of choice for the highly selective and efficient coupling of carbohydrates. Enzymatic sugar coupling is a competitive technology for industrial glycosylation reactions, since chemical synthetic routes require extensive use of laborious protection group manipulations and often lack regio- and stereoselectivity. The application of Leloir glycosyltransferases has received considerable attention in recent years and offers excellent control over the reactivity and selectivity of glycosylation reactions with unprotected carbohydrates, paving the way for previously inaccessible synthetic routes. The development of nucleotide recycling cascades has allowed for the efficient production and reuse of nucleotide sugar donors in robust one-pot multi-enzyme glycosylation cascades. In this way, large glycans and glycoconjugates with complex stereochemistry can be constructed. With recent advances, LeLoir glycosyltransferases are close to being applied industrially in multi-enzyme, programmable cascade glycosylations.
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Affiliation(s)
- Luuk Mestrom
- Department of Biotechnology, Delft University of Technology, Section Biocatalysis, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
| | - Marta Przypis
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland.
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland.
| | - Daria Kowalczykiewicz
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland.
- Biotechnology Center, Silesian University of Technology, B. Krzywoustego 8, 44-100 Gliwice, Poland.
| | - André Pollender
- Environmental Microbiology, Institute of Biosciences, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany.
| | - Antje Kumpf
- Environmental Microbiology, Institute of Biosciences, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany.
- Microbial Biotechnology, Faculty of Biology & Biotechnology, Ruhr-Universität Bochum, Universitätsstr. 150, 44780 Bochum, Germany.
| | - Stefan R Marsden
- Department of Biotechnology, Delft University of Technology, Section Biocatalysis, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
| | - Isabel Bento
- EMBL Hamburg, Notkestraβe 85, 22607 Hamburg, Germany.
| | - Andrzej B Jarzębski
- Institute of Chemical Engineering, Polish Academy of Sciences, Bałtycka 5, 44-100 Gliwice, Poland.
| | - Katarzyna Szymańska
- Department of Chemical and Process Engineering, Silesian University of Technology, Ks. M. Strzody 7, 44-100 Gliwice, Poland.
| | | | - Dirk Tischler
- Environmental Microbiology, Institute of Biosciences, TU Bergakademie Freiberg, Leipziger Str. 29, 09599 Freiberg, Germany.
- Microbial Biotechnology, Faculty of Biology & Biotechnology, Ruhr-Universität Bochum, Universitätsstr. 150, 44780 Bochum, Germany.
| | - Rob Schoevaart
- ChiralVision, J.H. Oortweg 21, 2333 CH Leiden, The Netherlands.
| | - Ulf Hanefeld
- Department of Biotechnology, Delft University of Technology, Section Biocatalysis, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
| | - Peter-Leon Hagedoorn
- Department of Biotechnology, Delft University of Technology, Section Biocatalysis, Van der Maasweg 9, 2629 HZ Delft, The Netherlands.
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16
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D'Andrea F, Vagelli G, Granchi C, Guazzelli L, Tuccinardi T, Poli G, Iacopini D, Minutolo F, Di Bussolo V. Synthesis and Biological Evaluation of New Glycoconjugated LDH Inhibitors as Anticancer Agents. Molecules 2019; 24:E3520. [PMID: 31569409 PMCID: PMC6804087 DOI: 10.3390/molecules24193520] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 09/26/2019] [Accepted: 09/27/2019] [Indexed: 12/17/2022] Open
Abstract
Conjugation of known biologically active molecules to carbohydrate frameworks represents a valuable option for the preparation of hybrid, structurally-related families of compounds with the aim of modulating their biological response. Therefore, we present here a study on the preparation of d-galacto, d-manno, d-gluco, and d-lactose glycoconjugates of an established N-hydroxyindole-based (NHI) inhibitor of lactated dehydrogenase (LDH). Structural variations involved the sugar stereochemistry and size as well as the anchoring point of the NHI on the carbohydrate frame (either C-1 or C-6). In the case of the galactose anomeric glycoconjugate (C-1), intriguing solvent-dependent effects were observed in the glycosylation stereochemical outcome. The biological activity of the deprotected glycoconjugates in contrasting lactate formation and cancer cell proliferation are described.
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Affiliation(s)
- Felicia D'Andrea
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy.
| | - Giulia Vagelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 3, 56124 Pisa, Italy.
| | - Carlotta Granchi
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy.
| | - Lorenzo Guazzelli
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy.
| | - Tiziano Tuccinardi
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy.
| | - Giulio Poli
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy.
| | - Dalila Iacopini
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 3, 56124 Pisa, Italy.
| | - Filippo Minutolo
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy.
| | - Valeria Di Bussolo
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 3, 56124 Pisa, Italy.
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17
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Abstract
The synthesis and application of porphyrins has seen a huge shift towards research in porphyrin bio-molecular based systems in the past decade. The preferential localization of porphyrins in tumors, as well as their ability to generate reactive singlet oxygen and low dark toxicities has resulted in their use in therapeutic applications such as photodynamic therapy. However, their inherent lack of bio-distribution due to water insolubility has shifted research into porphyrin-nanomaterial conjugated systems to address this challenge. This has broadened their bio-applications, viz. bio-sensors, fluorescence tracking, in vivo magnetic resonance imaging (MRI), and positron emission tomography (PET)/CT imaging to photo-immuno-therapy just to highlight a few. This paper reviews the unique theranostic role of porphyrins in disease diagnosis and therapy. The review highlights porphyrin conjugated systems and their applications. The review ends by bringing current challenges and future perspectives of porphyrin based conjugated systems and their respective applications into light.
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Affiliation(s)
- Ncediwe Tsolekile
- Department of Chemical Sciences (formerly Applied Chemistry), University of Johannesburg, P. O. Box 17011, Doornfontein 2028, Johannesburg, South Africa
- Department of Applied Chemistry, University of Johannesburg, P. O. Box 17011, Doornfontein 2028, Johannesburg, South Africa
- Department of Chemistry, Cape Peninsula University of Technology, P.O. Box 652, Cape Town 2000, South Africa
| | - Simphiwe Nelana
- Department of Chemistry, Vaal University of Technology, Private Bag X021, Vanderbijlpark 1900, South Africa.
| | - Oluwatobi Samuel Oluwafemi
- Department of Chemical Sciences (formerly Applied Chemistry), University of Johannesburg, P. O. Box 17011, Doornfontein 2028, Johannesburg, South Africa.
- Department of Applied Chemistry, University of Johannesburg, P. O. Box 17011, Doornfontein 2028, Johannesburg, South Africa.
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18
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Song C, Zheng XJ, Guo H, Cao Y, Zhang F, Li Q, Ye XS, Zhou Y. Fluorine-modified sialyl-Tn-CRM197 vaccine elicits a robust immune response. Glycoconj J 2019; 36:399-408. [PMID: 31267246 DOI: 10.1007/s10719-019-09884-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/17/2019] [Accepted: 06/21/2019] [Indexed: 01/28/2023]
Abstract
Even though a vaccine that targets tumor-associated carbohydrate antigens on epithelial carcinoma cells presents an attractive therapeutic approach, relatively poor immunogenicity limits its development. In this study, we investigated the immunological activity of a fluoro-substituted Sialyl-Tn (F-STn) analogue coupled to the non-toxic cross-reactive material of diphtheria toxin197 (CRM197). Our results indicate that F-STn-CRM197 promotes a greater immunogenicity than non-fluorinated STn-CRM197. In the presence or absence of adjuvant, F-STn-CRM197 remarkably enhances both cellular and humoral immunity against STn by increasing antigen-specific lymphocyte proliferation and inducing a mixed Th1/Th2 response leading to production of IFN-γ and IL-4 cytokines, as well as STn-specific antibodies. Furthermore, antisera produced from F-STn-CRM197 immunization significantly recognizes STn-positive tumor cells and increases cancer cell lysis induced by antibody-dependent cell-mediated cytotoxicity (ADCC) or complement-dependent cytotoxicity (CDC) pathways. Our data suggest that this F-STn vaccine may be useful for cancer immunotherapy and possibly for prophylactic prevention of cancer.
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MESH Headings
- Adjuvants, Immunologic/administration & dosage
- Animals
- Antibodies, Neoplasm/isolation & purification
- Antibodies, Neoplasm/pharmacology
- Antibody-Dependent Cell Cytotoxicity/drug effects
- Antigens, Tumor-Associated, Carbohydrate/chemistry
- Antigens, Tumor-Associated, Carbohydrate/immunology
- Bacterial Proteins/chemistry
- Bacterial Proteins/immunology
- Bacterial Proteins/pharmacology
- Cancer Vaccines/chemical synthesis
- Cancer Vaccines/immunology
- Cancer Vaccines/pharmacology
- Cell Line, Tumor
- Colonic Neoplasms/immunology
- Colonic Neoplasms/pathology
- Colonic Neoplasms/therapy
- Female
- Gene Expression
- Glycoconjugates/chemical synthesis
- Glycoconjugates/immunology
- Glycoconjugates/pharmacology
- Halogenation
- Humans
- Immune Sera/chemistry
- Immune Sera/pharmacology
- Immunity, Cellular/drug effects
- Immunity, Humoral/drug effects
- Immunization
- Immunogenicity, Vaccine
- Interferon-gamma/genetics
- Interferon-gamma/immunology
- Interleukin-4/genetics
- Interleukin-4/immunology
- Lymphocytes/drug effects
- Lymphocytes/immunology
- Mice
- Mice, Inbred BALB C
- Spleen/drug effects
- Spleen/immunology
- Th1-Th2 Balance
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Affiliation(s)
- Chengcheng Song
- School of Life Sciences, Northeast Normal University, Changchun, 130024, China
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Xiu-Jing Zheng
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Haili Guo
- School of Life Sciences, Northeast Normal University, Changchun, 130024, China
| | - Yafei Cao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Fan Zhang
- School of Life Sciences, Northeast Normal University, Changchun, 130024, China
| | - Qin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, China.
| | - Yifa Zhou
- School of Life Sciences, Northeast Normal University, Changchun, 130024, China.
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19
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Hashemitabar S, Yazdian-Robati R, Hashemi M, Ramezani M, Abnous K, Kalalinia F. ABCG2 aptamer selectively delivers doxorubicin to drug-resistant breast cancer cells. J Biosci 2019; 44:39. [PMID: 31180052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Chemotherapy is the most widely used treatment for cancer therapy, but its efficacy is limited by the side effects of non-specific cytotoxic drugs. Ligand-based targeting drug-delivery system is a solution to circumvent this issue. In this study, an ABCG2 aptamer-doxorubicin complex was prepared, and its efficacy in targeted drug delivery tomitoxantrone-resistance breast cancer cell line (MCF7/MX) was evaluated. The formation of aptamer-doxorubicin physical complex was analyzed by fluorometric analysis. The cytotoxicities of doxorubicin and aptamer-doxorubicin complex on MCF7 and MCF7/MX cell lines were evaluated by the MTT assay, and IC50 values were obtained. Cellular uptake of aptamer-doxorubicin complex was assessed by flow cytometry cellular uptake assay. Results: Fluorometric analysis of aptamer-doxorubicin showed 1-1.5 molar ratio of the drug to the aptamer could efficiently quenchDox fluorescence.MTTassay results showed that MCF7/MXcells were more resistant to doxorubicin than MCF7 cells (IC50 : 3.172 +/- 0.536 and 1.456 +/- 0.154 μM, respectively). Flow cytometry andMTTassay results showed that the aptamer-doxorubicin complex could increase the uptake and cytotoxicity of doxorubicin inMCF7/MX cell line in comparisonwith free doxorubicin, while the same treatments had no effect on IC50 of Dox on MCF7 cells. The results proposed that the ABCG2 aptamer-drug complex can be effectively used for specific drug delivery to ABCG2-overexpressing cells.
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Affiliation(s)
- Shirin Hashemitabar
- Biotechnology Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran
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20
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Lin CH, Wen HC, Chiang CC, Huang JS, Chen Y, Wang SK. Polyproline Tri-Helix Macrocycles as Nanosized Scaffolds to Control Ligand Patterns for Selective Protein Oligomer Interactions. Small 2019; 15:e1900561. [PMID: 30977296 DOI: 10.1002/smll.201900561] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Indexed: 06/09/2023]
Abstract
Multivalent ligand-receptor interactions play essential roles in biological recognition and signaling. As the receptor arrangement on the cell surface can alter the outcome of cell signaling and also provide spatial specificity for ligand binding, controlling the presentation of ligands has become a promising strategy to manipulate or selectively target protein receptors. The lack of adjustable universal tools to control ligand positions at the size of a few nanometers has prompted the development of polyproline tri-helix macrocycles as scaffolds to present ligands in designated patterns. Model lectin Helix pomatia agglutinin has shown selectivity toward the matching GalNAc ligand pattern matching its binding sites arrangement. The GalNAc pattern selectivity is also observed on intact asialoglycoprotein receptor oligomer on human hepatoma cells showing the pattern-selective interaction can be achieved not only on isolated protein oligomers but also the receptors arranged on the cell surface. As the scaffold design allows convenient creation of versatile ligand patterns, it can be expected as a promising tool to probe the arrangement of receptors on the cell surface and as nanomedicine to manipulate signaling or cell recognition.
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Affiliation(s)
- Cin-Hao Lin
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Hsin-Chuan Wen
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Cheng-Chin Chiang
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Jen-Sheng Huang
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Yunching Chen
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan
| | - Sheng-Kai Wang
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan
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21
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Fortunato S, Lenzi C, Granchi C, Citi V, Martelli A, Calderone V, Di Pietro S, Signore G, Di Bussolo V, Minutolo F. First Examples of H 2S-Releasing Glycoconjugates: Stereoselective Synthesis and Anticancer Activities. Bioconjug Chem 2019; 30:614-620. [PMID: 30609890 DOI: 10.1021/acs.bioconjchem.8b00808] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
H2S donors are currently emerging as promising therapeutic agents in a wide variety of pathologies, including tumors. Cancer cells are characterized by an enhanced uptake of sugars, such as glucose. Therefore, novel glycoconjugated H2S donors were synthesized so that high concentrations of H2S can be selectively achieved therein. Dithiolethione portions or isothiocyanate portions were selected for their well-known H2S-releasing properties in the presence of biological substrates. A synthetic procedure employing trichloroacetimidate glycosyl donors was applied to produce, in a stereoselective fashion, C1-glycoconjugates, whereas C6-glycoconjugates were obtained by a Mitsunobu-based transformation. The resulting molecules were then tested for their anticancer effects on human pancreas adenocarcinoma ascites metastasis cell line AsPC-1. The most potent inhibitors of cell viability (6aβ and 7b) proved to release H2S inside the AsPC-1 cells and to alter the basal cell cycle.
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Affiliation(s)
- Serena Fortunato
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Chiara Lenzi
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Carlotta Granchi
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Valentina Citi
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Alma Martelli
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Vincenzo Calderone
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Sebastiano Di Pietro
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
| | - Giovanni Signore
- NEST, Scuola Normale Superiore and NANO-CNR , Piazza San Silvestro 12 , 56127 Pisa , Italy
| | - Valeria Di Bussolo
- Dipartimento di Chimica e Chimica Industriale , Università di Pisa , Via G. Moruzzi 13 , 56124 Pisa , Italy
| | - Filippo Minutolo
- Dipartimento di Farmacia , Università di Pisa , Via Bonanno Pisano , 56126 Pisa , Italy
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22
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Li H, Wang K, Wan Q, Chen Y. Design, synthesis and anti-tumor evaluation of novel steroidal glycoconjugate with furoxan derivatives. Steroids 2019; 141:81-95. [PMID: 30521816 DOI: 10.1016/j.steroids.2018.11.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 11/05/2018] [Accepted: 11/26/2018] [Indexed: 11/24/2022]
Abstract
In this study, eighteen novel steroidal-furoxan derivatives with 3-glycosyl or 3-methoxy moiety (12a-c, 13a-c, 17a-c, 26a-c, 27a-c and 28a-c) were synthesized and their anti-proliferative activity was evaluated against eight drug-sensitive and three drug-resistant cancer cell lines HeLa, A2780, LNCaP, PC-3, MDA-MB-231, MCF-7, SW480, A549, MCF-7/ADR, A2780/CDDP and A2780/T. Most of them displayed significant anti-cancer potency in vitro with IC50 values at the nanomole level. Among them, 3-methoxy steroidal-furoxan hybrids expressed much better activity than that of 3-glycosyl substitute ones, while estrane and 5α-H-androstane scaffold were slightly more favorable to the improvement of anti-proliferative activity. Especially, compounds 27c and 28b showed the strongest cytotoxicity with IC50 values of 0.0007-0.034 and 0.0011-0.008 µM, respectively in five drug-sensitive cancer cell lines. Furthermore, 3-glycoconjugates 13a, 13c, 17b and 3-methoxy compounds 27a, 27c, 28b displayed lower toxicity in nontumorigenesis cells HOSEC and expressed a good selectivity against malignant cells in vitro. Preliminary study of pharmacology showed that the introduction of glucose at 3-position in steroidal core seems unable to use glucose transporters to improve the selectivity against proliferation of malignant cells, while the NO-releasing capacity might explain the potent anti-neoplastic activity of these compounds. And compound 28b could induce the apoptosis and hardly affected the cell cycle of A2780. Then, the further study of these steroidal-furoxan hybrids merits to explore and develop a desirable anti-cancer candidate.
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Affiliation(s)
- Haihong Li
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Ke Wang
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Qi Wan
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Ying Chen
- Department of Medicinal Chemistry, School of Pharmacy, Fudan University, Shanghai 201203, China.
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Abstract
Oligosaccharides equipped with amine-containing linkers can be conjugated to carrier proteins using squaric acid chemistry. In a two-step process, a squarate derivative of such oligosaccharide is formed first, which is followed by its reaction with a protein carrier. Monitoring of the conjugation reaction is achieved by SELDI-TOF-MS or MALDI-TOF-MS. This experimentally simple procedure yields desired glycoconjugates in high yields and with reproducible hapten-protein ratios.
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Affiliation(s)
| | - Xiaowei Lu
- National Institutes of Health, NIDDK, LBC, Bethesda, MD, USA
| | - Sameh E Soliman
- National Institutes of Health, NIDDK, LBC, Bethesda, MD, USA
| | - Pavol Kováč
- Laboratory of Bioorganic Chemistry, National Institutes of Health, Bethesda, MD, USA.
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24
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Serda M, Ware MJ, Newton JM, Sachdeva S, Krzykawska-Serda M, Nguyen L, Law J, Anderson AO, Curley SA, Wilson LJ, Corr SJ. Development of photoactive Sweet-C 60 for pancreatic cancer stellate cell therapy. Nanomedicine (Lond) 2018; 13:2981-2993. [PMID: 30501557 PMCID: PMC6462851 DOI: 10.2217/nnm-2018-0239] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 10/04/2018] [Indexed: 02/07/2023] Open
Abstract
AIM Glycoconjugated C60 derivatives are of particular interest as potential cancer targeting agents due to an upregulated metabolic glucose demand, especially in the case of pancreatic adenocarcinoma and its dense stroma, which is known to be driven by a subset of pancreatic stellate cells. MATERIALS & METHODS Herein, we describe the synthesis and biological characterization of a hexakis-glucosamine C60 derivative (termed 'Sweet-C60'). RESULTS Synthesized fullerene derivative predominantly accumulates in the nucleus of pancreatic stellate cells; is inherently nontoxic up to concentrations of 1 mg/ml; and is photoactive when illuminated with blue and green light, allowing its use as a photodynamic therapy agent. CONCLUSION Obtained glycoconjugated nanoplatform is a promising nanotherapeutic for pancreatic cancer.
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Affiliation(s)
- Maciej Serda
- Department of Chemistry & Smalley-Curl Institute, Rice University, Houston, TX 77251, USA
- Institute of Chemistry, University of Silesia in Katowice, Katowice, 40-006, Poland
| | - Matthew J Ware
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jared M Newton
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Otolaryngology-Head & Neck Surgery, Baylor College of Medicine, Houston, TX 77030, USA
- Interdepartmental Graduate Program in Translational Biology & Molecular Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sanchit Sachdeva
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Martyna Krzykawska-Serda
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
- Faculty of Biochemistry, Biophysics & Biotechnology, Jagiellonian University, Kraków, 30-387, Poland
| | - Lam Nguyen
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Justin Law
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Andrew O Anderson
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Steven A Curley
- Department of Chemistry & Smalley-Curl Institute, Rice University, Houston, TX 77251, USA
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Mechanical Engineering & Materials Science, Rice University, Houston, TX 77005, USA
| | - Lon J Wilson
- Department of Chemistry & Smalley-Curl Institute, Rice University, Houston, TX 77251, USA
| | - Stuart J Corr
- Department of Chemistry & Smalley-Curl Institute, Rice University, Houston, TX 77251, USA
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX 77030, USA
- Department of Biomedical Engineering, University of Houston, Houston 77204, TX, USA
- School of Medicine, Swansea University, Swansea, Wales, SA2 8PP, UK
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25
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Borišev I, Mrđanovic J, Petrovic D, Seke M, Jović D, Srđenović B, Latinovic N, Djordjevic A. Nanoformulations of doxorubicin: how far have we come and where do we go from here? Nanotechnology 2018; 29:332002. [PMID: 29798934 DOI: 10.1088/1361-6528/aac7dd] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanotechnology, focused on discovery and development of new pharmaceutical products is known as nanopharmacology, and one research area this branch is engaged in are nanopharmaceuticals. The importance of being nano has been particularly emphasized in scientific areas dealing with nanomedicine and nanopharmaceuticals. Nanopharmaceuticals, their routes of administration, obstacles and solutions concerning their improved application and enhanced efficacy have been briefly yet comprehensively described. Cancer is one of the leading causes of death worldwide and evergrowing number of scientific research on the topic only confirms that the needs have not been completed yet and that there is a wide platform for improvement. This is undoubtedly true for nanoformulations of an anticancer drug doxorubicin, where various nanocarrriers were given an important role to reduce the drug toxicity, while the efficacy of the drug was supposed to be retained or preferably enhanced. Therefore, we present an interdisciplinary comprehensive overview of interdisciplinary nature on nanopharmaceuticals based on doxorubicin and its nanoformulations with valuable information concerning trends, obstacles and prospective of nanopharmaceuticals development, mode of activity of sole drug doxorubicin and its nanoformulations based on different nanocarriers, their brief descriptions of biological activity through assessing in vitro and in vivo behavior.
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Affiliation(s)
- Ivana Borišev
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, Novi Sad, Serbia
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26
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Komor R, Pastuch-Gawolek G, Krol E, Szeja W. Synthesis and Preliminary Evaluation of Biological Activity of Glycoconjugates Analogues of Acyclic Uridine Derivatives. Molecules 2018; 23:molecules23082017. [PMID: 30104510 PMCID: PMC6222857 DOI: 10.3390/molecules23082017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/09/2018] [Accepted: 08/11/2018] [Indexed: 12/16/2022] Open
Abstract
Herein we present the methodology for obtaining glycosyltransferase inhibitors, analogues of natural enzyme substrates of donor-type: UDP-glucose and UDP-galactose. The synthesis concerned glycoconjugates, nucleoside analogues containing an acyclic ribose mimetic linked to a uracil moiety in their structure. The biological activity of the synthesised compounds was determined on the basis of their ability to inhibit the model enzyme action of β-1,4-galactosyltransferase from bovine milk. The obtained results allowed to expand and supplement the existing library of synthetic compounds that are able to regulate the biological activity of enzymes from the GT class.
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Affiliation(s)
- Roman Komor
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland.
| | - Gabriela Pastuch-Gawolek
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland.
- Biotechnology Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland.
| | - Ewelina Krol
- Department of Recombinant Vaccines, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Abrahama 58, 80-307 Gdansk, Poland.
| | - Wieslaw Szeja
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland.
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27
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Behera A, Kulkarni SS. Chemical Synthesis of Rare, Deoxy-Amino Sugars Containing Bacterial Glycoconjugates as Potential Vaccine Candidates. Molecules 2018; 23:molecules23081997. [PMID: 30103434 PMCID: PMC6222762 DOI: 10.3390/molecules23081997] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/04/2018] [Accepted: 08/08/2018] [Indexed: 12/30/2022] Open
Abstract
Bacteria often contain rare deoxy amino sugars which are absent in the host cells. This structural difference can be harnessed for the development of vaccines. Over the last fifteen years, remarkable progress has been made toward the development of novel and efficient protocols for obtaining the rare sugar building blocks and their stereoselective assembly to construct conjugation ready bacterial glycans. In this review, we discuss the total synthesis of a variety of rare sugar containing bacterial glycoconjugates which are potential vaccine candidates.
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Affiliation(s)
- Archanamayee Behera
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
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28
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James NS, Cheruku RR, Missert JR, Sunar U, Pandey RK. Measurement of Cyanine Dye Photobleaching in Photosensitizer Cyanine Dye Conjugates Could Help in Optimizing Light Dosimetry for Improved Photodynamic Therapy of Cancer. Molecules 2018; 23:molecules23081842. [PMID: 30042350 PMCID: PMC6222364 DOI: 10.3390/molecules23081842] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/02/2018] [Accepted: 07/13/2018] [Indexed: 12/22/2022] Open
Abstract
Photodynamic therapy (PDT) of cancer is dependent on three primary components: photosensitizer (PS), light and oxygen. Because these components are interdependent and vary during the dynamic process of PDT, assessing PDT efficacy may not be trivial. Therefore, it has become necessary to develop pre-treatment planning, on-line monitoring and dosimetry strategies during PDT, which become more critical for two or more chromophore systems, for example, PS-CD (Photosensitizer-Cyanine dye) conjugates developed in our laboratory for fluorescence-imaging and PDT of cancer. In this study, we observed a significant impact of variable light dosimetry; (i) high light fluence and fluence rate (light dose: 135 J/cm2, fluence rate: 75 mW/cm2) and (ii) low light fluence and fluence rate (128 J/cm2 and 14 mW/cm2 and 128 J/cm2 and 7 mW/cm2) in photobleaching of the individual chromophores of PS-CD conjugates and their long-term tumor response. The fluorescence at the near-infrared (NIR) region of the PS-NIR fluorophore conjugate was assessed intermittently via fluorescence imaging. The loss of fluorescence, photobleaching, caused by singlet oxygen from the PS was mapped continuously during PDT. The tumor responses (BALB/c mice bearing Colon26 tumors) were assessed after PDT by measuring tumor sizes daily. Our results showed distinctive photobleaching kinetics rates between the PS and CD. Interestingly, compared to higher light fluence, the tumors exposed at low light fluence showed reduced photobleaching and enhanced long-term PDT efficacy. The presence of NIR fluorophore in PS-CD conjugates provides an opportunity of fluorescence imaging and monitoring the photobleaching rate of the CD moiety for large and deeply seated tumors and assessing PDT tumor response in real-time.
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Affiliation(s)
- Nadine S James
- PDT Center, Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
| | - Ravindra R Cheruku
- PDT Center, Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
| | - Joseph R Missert
- PDT Center, Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
| | - Ulas Sunar
- PDT Center, Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
- Department of Biomedical Engineering, Wright State University, Dayton, OH 45435, USA.
| | - Ravindra K Pandey
- PDT Center, Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263, USA.
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29
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Krol E, Pastuch-Gawolek G, Chaubey B, Brzuska G, Erfurt K, Szewczyk B. Novel Uridine Glycoconjugates, Derivatives of 4-Aminophenyl 1-Thioglycosides, as Potential Antiviral Compounds. Molecules 2018; 23:molecules23061435. [PMID: 29899276 PMCID: PMC6100568 DOI: 10.3390/molecules23061435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/02/2018] [Accepted: 06/10/2018] [Indexed: 01/19/2023] Open
Abstract
A novel series of uridine glycoconjugates, derivatives of 4-aminophenyl 1-thioglycosides, was designed and synthesized. All compounds were evaluated in vitro for their antiviral activity against hepatitis C virus (HCV) and classical swine fever virus (CSFV), two important human and animal viral pathogens for which new or improved therapeutic options are needed. The antiviral activity of all synthesized compounds was confirmed using pseudo-plaque reduction assays in which a significant arrest of CSFV and HCV growth was observed in the presence of these compounds. Two of the synthesized compounds, 9 and 12, displayed a significant inhibitory effect on HCV and CSFV propagation with IC50 values of 4.9 and 13.5 µM for HCV and 4.2 and 4 µM for CSFV, respectively, with low cytotoxicity. Using various infection and replication models, we have shown that both compounds were able to significantly reduce viral genome replication by up to 90% with IC50 values in the low micromolar range. A structure activity analysis of the synthesized compounds showed that the high antiviral activity was attributed to the hydrophobicity of glycoconjugates and the introduction of elements capable to coordinate metal ions into the spacer connecting the sugar and uridine moiety, which can be useful in the development of new antiviral compounds in the future.
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Affiliation(s)
- Ewelina Krol
- Department of Recombinant Vaccines, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Abrahama 58, 80-307 Gdansk, Poland.
| | - Gabriela Pastuch-Gawolek
- Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland.
- Biotechnology Center, Silesian University of Technology, Krzywoustego 8, 44-100 Gliwice, Poland.
| | - Binay Chaubey
- Department of Recombinant Vaccines, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Abrahama 58, 80-307 Gdansk, Poland.
- Functional Genomics Lab., Centre for Advanced Study, Department of Botany, University of Calcutta, 35, Ballygunge Circular Road, 700019 Kolkata, India.
| | - Gabriela Brzuska
- Department of Recombinant Vaccines, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Abrahama 58, 80-307 Gdansk, Poland.
| | - Karol Erfurt
- Department of Chemical Organic Technology and Petrochemistry, Faculty of Chemistry, Silesian University of Technology, Krzywoustego 4, 44-100 Gliwice, Poland.
| | - Boguslaw Szewczyk
- Department of Recombinant Vaccines, Intercollegiate Faculty of Biotechnology, University of Gdansk and Medical University of Gdansk, Abrahama 58, 80-307 Gdansk, Poland.
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30
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Akilo OD, Kumar P, Choonara YE, Pradeep P, du Toit LC, Pillay V. Hypothesis: apo-lactoferrin-Galantamine Proteo-alkaloid Conjugate for Alzheimer's disease Intervention. J Cell Mol Med 2018; 22:1957-1963. [PMID: 29377514 PMCID: PMC5824407 DOI: 10.1111/jcmm.13484] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/01/2017] [Indexed: 12/22/2022] Open
Abstract
Alzheimer's disease (AD) is known to be caused by the accumulation of deformed beta amyloid and hyperphosphorylated tau proteins resulting into formation and aggregation of senile plaques and neurofibrillary tangles in the brain. Additionally, AD is associated with the accumulation of iron or metal ions in the brain which causes oxidative stress. Galantamine (Gal) is one of the therapeutic agents that has been approved for the treatment of AD, but still saddled with numerous side effects and could not address the issue of iron accumulation in the brain. The use of metal chelators to address the iron accumulation has not been successful due to toxicity and inability to address the aggregation of the plaques. We therefore hypothesize a combinatorial antioxidant-metal-chelator approach by formulating a single dosage form that has the ability to prevent the formation of free radicals, plaques and accumulation of iron in the brain. This can be achieved by conjugating Gal with apo-lactoferrin (ApoLf), a natural compound that has high binding affinity for iron, to form an apo-lactoferrin-galantamine proteo-alkaloid conjugate (ApoLf-Gal) as a single dosage form for AD management. The conjugation is achieved through self-assembly of ApoLf which results in encapsulation of Gal. ApoLf changes its conformational structure in the presence of iron; therefore, ApoLf-Gal is proposed to deliver Gal and pick up excess iron when in contact with iron. This strategy has the potential to proffer a dual neuroprotection and neurotherapeutic interventions for the management of AD.
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Affiliation(s)
- Olufemi D. Akilo
- Wits Advanced Drug Delivery Platform Research UnitDepartment of Pharmacy and PharmacologySchool of Therapeutic SciencesFaculty of Health SciencesUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research UnitDepartment of Pharmacy and PharmacologySchool of Therapeutic SciencesFaculty of Health SciencesUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Yahya E. Choonara
- Wits Advanced Drug Delivery Platform Research UnitDepartment of Pharmacy and PharmacologySchool of Therapeutic SciencesFaculty of Health SciencesUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Priyamvada Pradeep
- Wits Advanced Drug Delivery Platform Research UnitDepartment of Pharmacy and PharmacologySchool of Therapeutic SciencesFaculty of Health SciencesUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Lisa C. du Toit
- Wits Advanced Drug Delivery Platform Research UnitDepartment of Pharmacy and PharmacologySchool of Therapeutic SciencesFaculty of Health SciencesUniversity of the WitwatersrandJohannesburgSouth Africa
| | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research UnitDepartment of Pharmacy and PharmacologySchool of Therapeutic SciencesFaculty of Health SciencesUniversity of the WitwatersrandJohannesburgSouth Africa
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31
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Zong G, Sun X, Bhakta R, Whisenhunt L, Hu Z, Wang F, Shi WQ. New insights into structure-activity relationship of ipomoeassin F from its bioisosteric 5-oxa/aza analogues. Eur J Med Chem 2018; 144:751-757. [PMID: 29291442 PMCID: PMC5800971 DOI: 10.1016/j.ejmech.2017.11.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 11/03/2017] [Accepted: 11/08/2017] [Indexed: 10/18/2022]
Abstract
Ipomoeassin F, a plant-derived macrolide, exhibited single-digit nanomolar growth inhibition activity against many cancer cell lines. In this report, a series of 5-oxa/aza analogues was prepared and screened for cytotoxicity. Replacement of 5-CH2 with O/NH simplified the synthesis and led to only a small activity loss. N-methylation almost completely restored the potency. Further studies with additional 5-oxa analogues suggested, for the first time, that size and flexibility of the ring also significantly influence the bioactivity of ipomoeassin F.
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Affiliation(s)
- Guanghui Zong
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Xianwei Sun
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Rima Bhakta
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Lucas Whisenhunt
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Zhijian Hu
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Feng Wang
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR, 72701, USA
| | - Wei Q Shi
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR, 72701, USA.
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32
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Abstract
Glyconanoparticles essentially result from the (covalent or noncovalent) association of nanometer-scale objects with carbohydrates. Such glyconanoparticles can take many different forms and this mini review will focus only on soft materials (colloids, liposomes, gels etc.) with a special emphasis on glycolipid-derived nanomaterials and the chemistry involved for their synthesis. Also this contribution presents Low Molecular Weight Gels (LMWGs) stabilized by glycoconjugate amphiphiles. Such soft materials are likely to be of interest for different biomedical applications.
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Affiliation(s)
- Laurent Latxague
- ARNA Laboratory, Inserm U1212, CNRS UMR 5320, Université de Bordeaux, F-33000 Bordeaux, France.
| | - Alexandra Gaubert
- ARNA Laboratory, Inserm U1212, CNRS UMR 5320, Université de Bordeaux, F-33000 Bordeaux, France.
| | - Philippe Barthélémy
- ARNA Laboratory, Inserm U1212, CNRS UMR 5320, Université de Bordeaux, F-33000 Bordeaux, France.
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33
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Seeberger PH, Pereira CL, Khan N, Xiao G, Diago-Navarro E, Reppe K, Opitz B, Fries BC, Witzenrath M. A Semi-Synthetic Glycoconjugate Vaccine Candidate for Carbapenem-Resistant Klebsiella pneumoniae. Angew Chem Int Ed Engl 2017; 56:13973-13978. [PMID: 28815890 PMCID: PMC5819008 DOI: 10.1002/anie.201700964] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 08/05/2017] [Indexed: 12/15/2022]
Abstract
Hospital-acquired infections are an increasingly serious health concern. Infections caused by carpabenem-resistant Klebsiella pneumoniae (CR-Kp) are especially problematic, with a 50 % average survival rate. CR-Kp are isolated from patients with ever greater frequency, 7 % within the EU but 62 % in Greece. At a time when antibiotics are becoming less effective, no vaccines to protect from this severe bacterial infection exist. Herein, we describe the convergent [3+3] synthesis of the hexasaccharide repeating unit from its capsular polysaccharide and related sequences. Immunization with the synthetic hexasaccharide 1 glycoconjugate resulted in high titers of cross-reactive antibodies against CR-Kp CPS in mice and rabbits. Whole-cell ELISA was used to establish the surface staining of CR-Kp strains. The antibodies raised were found to promote phagocytosis. Thus, this semi-synthetic glycoconjugate is a lead for the development of a vaccine against a rapidly progressing, deadly bacterium.
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Affiliation(s)
- Peter H. Seeberger
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam (Germany)
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin (Germany)
| | - Claney L. Pereira
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam (Germany)
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin (Germany)
| | - Naeem Khan
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam (Germany)
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin (Germany)
| | - Guozhi Xiao
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14424 Potsdam (Germany)
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin (Germany)
| | - Elizabeth Diago-Navarro
- Department of Medicine, Division of Infectious Diseases, Stony Brook University, 101 Nicolls Road, Stony Brook, NY 11794 (USA)
| | - Katrin Reppe
- Charité—Universitätsmedizin Berlin, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin (Germany)
| | - Bastian Opitz
- Charité—Universitätsmedizin Berlin, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin (Germany)
| | - Bettina C. Fries
- Department of Medicine, Division of Infectious Diseases, Stony Brook University, 101 Nicolls Road, Stony Brook, NY 11794 (USA)
| | - Martin Witzenrath
- Charité—Universitätsmedizin Berlin, Department of Infectious Diseases and Pulmonary Medicine, Charitéplatz 1, 10117 Berlin (Germany)
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34
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Munneke S, Dangerfield EM, Stocker BL, Timmer MSM. The versatility of N-alkyl-methoxyamine bi-functional linkers for the preparation of glycoconjugates. Glycoconj J 2017; 34:633-642. [PMID: 28725972 DOI: 10.1007/s10719-017-9785-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/05/2017] [Accepted: 07/06/2017] [Indexed: 11/25/2022]
Abstract
The application of N-glycosyl-N-alkyl-methoxyamine bi-functional linkers for the synthesis of a variety of glycoconjugates is described. The linker contains a specific functional group, such as an amine, azide, thiol, or carboxylic acid, which can be used for conjugation methodologies that include amide ligation, sulfonylation, copper-mediated Huisgen cycloaddition or thiol-maleimide coupling. In this way, glycoconjugates equipped with biotin, a fluorescent reporter, or a protein were efficiently synthesised, thus demonstrating the versatility of this type of oxyamine linker for the construction of glycoconjugate probes.
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Affiliation(s)
- Stefan Munneke
- School of Chemical and Physical Sciences, PO Box 600, Wellington, New Zealand
| | - Emma M Dangerfield
- School of Chemical and Physical Sciences, PO Box 600, Wellington, New Zealand
| | - Bridget L Stocker
- School of Chemical and Physical Sciences, PO Box 600, Wellington, New Zealand.
| | - Mattie S M Timmer
- School of Chemical and Physical Sciences, PO Box 600, Wellington, New Zealand.
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35
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Zong G, Hirsch M, Mondrik C, Hu Z, Shi WQ. Design, synthesis and biological evaluation of fucose-truncated monosaccharide analogues of ipomoeassin F. Bioorg Med Chem Lett 2017; 27:2752-2756. [PMID: 28465102 PMCID: PMC5502735 DOI: 10.1016/j.bmcl.2017.04.065] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 04/18/2017] [Accepted: 04/19/2017] [Indexed: 11/28/2022]
Abstract
Ipomoeassin F is a plant-derived macrocyclic glycolipid with single-digit nanomolar IC50 values against cancer cell growth. In previous structure-activity relationship studies, we have demonstrated that certain modifications around the fucoside moiety did not cause significant cytotoxicity loss. To further elucidate the effect of the fucoside moiety on the biological activity, we describe here the design and synthesis of several fucose-truncated monosaccharide analogues of ipomoeassin F. Subsequent biological evaluation strongly suggests that the 6-membered ring of the fucoside moiety is essential to the overall conformation of the molecule, thereby influencing bioactivity.
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Affiliation(s)
- Guanghui Zong
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Melissa Hirsch
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Collin Mondrik
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Zhijian Hu
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR 72701, USA
| | - Wei Q Shi
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, AR 72701, USA.
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36
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Xu P, Kelly M, Vann WF, Qadri F, Ryan ET, Kováč P. Conjugate Vaccines from Bacterial Antigens by Squaric Acid Chemistry: A Closer Look. Chembiochem 2017; 18:799-815. [PMID: 28182850 PMCID: PMC5664186 DOI: 10.1002/cbic.201600699] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Indexed: 11/09/2022]
Abstract
By using O-SP-core (O-SPcNH2 ) polysaccharide, isolated from Vibrio cholera O1 lipopolysaccharide (LPS) and related synthetic substances, a detailed study of factors that affect conjugation of bacterial polysaccharides to protein carriers through squaric acid chemistry to form conjugate vaccines has been carried out. Several previously unrecognized processes that take place during the squarate labeling of the O-SPcNH2 and subsequent conjugation of the formed squarate (O-SPcNH-SqOMe) have been identified. The efficiency of conjugation at pH 8.5, 9.0, and 9.5 to bovine serum albumin (BSA) and to the recombinant tetanus toxin fragment C (rTT-Hc) has been determined. The study led to a protocol for more efficient labeling of O-SPcNH2 antigen with the methyl squarate group, to yield a higher-quality, more potent squarate conjugation reagent. Its use resulted in about twofold increases in conjugation efficiency (from 23-26 % on BSA to 51 % on BSA and 55 % on rTT-Hc). The spent conjugation reagent could be recovered and regenerated by treatment with MeI in the absence of additional base. The immunological properties of the experimental vaccine made from the regenerated conjugation reagent were comparable with those of the immunogen made from the parent O-SPcNH-SqOMe.
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Affiliation(s)
- Peng Xu
- NIDDK, LBC, Section on Carbohydrates, National Institutes of Health (NIH), Bethesda, MD, 20892-0815, USA
| | - Meagan Kelly
- Department of Immunology and Infectious Diseases, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA
| | - Willie F Vann
- Laboratory of Bacterial Toxins, CBER, FDA, Silver Spring, MD, 20993, USA
| | - Firdausi Qadri
- International Centre for Diarrhoeal Disease Research Bangladesh, icddr, b), Dhaka, Bangladesh
| | - Edward T Ryan
- Department of Immunology and Infectious Diseases, Massachusetts General Hospital, 55 Fruit Street, Boston, MA, 02114, USA
- Department of Medicine, Harvard Medical School, Shattuck Street, Boston, MA, 02115, USA
- Department of Immunology and Infectious Diseases, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA
| | - Pavol Kováč
- NIDDK, LBC, Section on Carbohydrates, National Institutes of Health (NIH), Bethesda, MD, 20892-0815, USA
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37
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Cheng W, Dahmani FZ, Zhang J, Xiong H, Wu Y, Yin L, Zhou J, Yao J. Anti-angiogenic activity and antitumor efficacy of amphiphilic twin drug from ursolic acid and low molecular weight heparin. Nanotechnology 2017; 28:075102. [PMID: 28091396 DOI: 10.1088/1361-6528/aa53c6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Heparin, a potential blood anti-coagulant, is also known for its binding ability to several angiogenic factors through electrostatic interactions due to its polyanionic character. However, the clinical application of heparin for cancer treatment is limited by several drawbacks, such as unsatisfactory therapeutic effects and severe anticoagulant activity that could induce hemorrhaging. Herein, low molecular weight heparin (LMWH) was conjugated to ursolic acid (UA), which is also an angiogenesis inhibitor, by binding the amine group of aminoethyl-UA (UA-NH2) with the carboxylic groups of LMWH. The resulting LMWH-UA conjugate as an amphiphilic twin drug showed reduced anticoagulant activity and could also self-assemble into nanomicelles with a mean particle size ranging from 200-250 nm. An in vitro endothelial tubular formation assay and an in vivo Matrigel plug assay were performed to verify the anti-angiogenic potential of LMWH-UA. Meanwhile, the in vivo antitumor effect of LMWH-UA was also evaluated using a B16F10 mouse melanoma model. LMWH-UA nanomicelles were shown to inhibit angiogenesis both in vitro and in vivo. In addition, the i.v. administration of LMWH-UA to the B16F10 tumor-bearing mice resulted in a significant inhibition of tumor growth as compared to the free drug solutions. These findings demonstrate the therapeutic potential of LMWH-UA as a new therapeutic remedy for cancer therapy.
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Affiliation(s)
- Wenming Cheng
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, People's Republic of China
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38
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Abstract
Ipomoeassin F, the flagship congener of a resin glycoside family exhibited single-digit nanomolar IC50 values against several cancer cell lines. To facilitate drug discovery based on this unique yet underexplored natural product, we performed the most sophisticated SAR studies of ipomoeassin F to date, which not only greatly bettered our understanding of its pharmacophore but also led to the discovery of two new derivatives (3 and 27) with similar potency but improved synthetic profile. The work presented here opens new avenues toward harnessing the medicinal potential of the ipomoeassin family of glycolipids in the future.
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Affiliation(s)
- Guanghui Zong
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Hazim Aljewari
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Zhijian Hu
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Wei Q. Shi
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
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39
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Ma Y, He S, Ma X, Hong T, Li Z, Park K, Wang W. Silymarin-Loaded Nanoparticles Based on Stearic Acid-Modified Bletilla striata Polysaccharide for Hepatic Targeting. Molecules 2016; 21:265. [PMID: 26938513 PMCID: PMC6274508 DOI: 10.3390/molecules21030265] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 02/15/2016] [Accepted: 02/22/2016] [Indexed: 11/23/2022] Open
Abstract
Silymarin has been widely used as a hepatoprotective drug in the treatment of various liver diseases, yet its effectiveness is affected by its poor water solubility and low bioavailability after oral administration, and there is a need for the development of intravenous products, especially for liver-targeting purposes. In this study, silymarin was encapsulated in self-assembled nanoparticles of Bletilla striata polysaccharide (BSP) conjugates modified with stearic acid and the physicochemical properties of the obtained nanoparticles were characterized. The silymarin-loaded micelles appeared as spherical particles with a mean diameter of 200 nm under TEM. The encapsulation of drug molecules was confirmed by DSC thermograms and XRD diffractograms, respectively. The nanoparticles exhibited a sustained-release profile for nearly 1 week with no obvious initial burst. Compared to drug solutions, the drug-loaded nanoparticles showed a lower viability and higher uptake intensity on HepG2 cell lines. After intravenous administration of nanoparticle formulation for 30 min to mice, the liver became the most significant organ enriched with the fluorescent probe. These results suggest that BSP derivative nanoparticles possess hepatic targeting capability and are promising nanocarriers for delivering silymarin to the liver.
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Affiliation(s)
- Yanni Ma
- Institute of Clinical Pharmacology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, China.
| | - Shaolong He
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan, Ningxia 750004, China.
| | - Xueqin Ma
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan, Ningxia 750004, China.
| | - Tongtong Hong
- Department of Pharmacy, General Hospital of Yankuang Group, Zou Cheng, Shandong 273500, China.
| | - Zhifang Li
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan, Ningxia 750004, China.
| | - Kinam Park
- Departments of Biomedical Engineering and Pharmaceutics, Purdue University, West Lafayette, IN 47907, USA.
| | - Wenping Wang
- Department of Pharmaceutics, School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan, Ningxia 750004, China.
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40
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Li X, Zhang W, Chen G. Synthesis of Non-spherical Glycopolymer-Decorated Nanoparticles: Combing Thiol-ene with Catecholic Chemistry. Methods Mol Biol 2016; 1367:149-155. [PMID: 26537471 DOI: 10.1007/978-1-4939-3130-9_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Glycopolymers with carbohydrate side chains are currently being applied in many fields, with much potential for disease treatment. The shape of glycopolymer-bearing nanoparticles has obvious effects on the nanoparticle-cell interaction and is therefore important for the applications of glycopolymers in biological systems. Here a synthetic approach to prepare non-spherical glycopolymer-coated iron oxide nanoparticles is provided, by combing the convenience of inorganic shape control, catecholic chemistry, and thiol-ene reaction.
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Affiliation(s)
- Xiao Li
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou, 215006, China
| | - Weidong Zhang
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou, 215006, China
| | - Gaojian Chen
- Center for Soft Condensed Matter Physics and Interdisciplinary Research, Soochow University, Suzhou, 215006, China.
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41
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Abstract
Advances in nanotechnology have led to the fabrication of nano-constructs of organic or inorganic origins with well-defined structures, surface properties, and can be made to respond to physical or chemical stimuli. These nano-constructs can provide a shift in the way diagnostic and therapeutic drugs are delivered to achieve target specificity and increased retention of therapeutic doses for considerable improvement in the overall treatment of the tumors. In this case we describe here a synthetic approach to glycopolymer base nanoparticle gold(I) conjugate for cancer therapy.
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Affiliation(s)
- Christian K Adokoh
- Department of Chemical and Materials Engineering, University of Alberta, 9107-116 Street, Edmonton, AB, Canada, T6G 2V4
- Department of Chemistry, University of Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa
| | - James Darkwa
- Department of Chemistry, University of Johannesburg, P.O. Box 524, Auckland Park, 2006, South Africa
| | - Ravin Narain
- Department of Chemical and Materials Engineering, University of Alberta, 9107-116 Street, Edmonton, AB, Canada, T6G 2V4.
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42
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Weber C, Gottschaldt M, Hoogenboom R, Schubert US. Carbohydrate-Based Initiators for the Cationic Ring-Opening Polymerization of 2-Ethyl-2-Oxazoline. Methods Mol Biol 2016; 1367:49-59. [PMID: 26537464 DOI: 10.1007/978-1-4939-3130-9_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The advancement in the field of living and controlled polymerization techniques provides the opportunity for careful bottom-up design of polymers for biomedical applications according to their specific needs. This contribution describes the detailed methodology to functionalize poly(2-ethyl-2-oxazoline), a polymer with properties very similar to polyethylene glycol, in a stereo-selective manner with a range of carbohydrates that can serve as biological targeting units. The obtained building blocks can subsequently be applied for the synthesis of more complex polymeric architectures.
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Affiliation(s)
- Christine Weber
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Michael Gottschaldt
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000, Ghent, Belgium
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany.
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43
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Narla SN, Sun XL. Oriented Immobilized Sialyloligo-macroligand Microarray. Methods Mol Biol 2015; 1367:195-206. [PMID: 26537475 DOI: 10.1007/978-1-4939-3130-9_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Silaic acid is the most common terminal glycan on cell surface glycoproteins and glycolipids, involving in many biological processes. Studying interactions between multivalent sialic acid scaffolds and proteins binding to it will give incredible information in understanding the biological process the sialic acid is involved in. Here we describe chemoenzymatic synthesis of chain-end functionalized sialyllactose-containing glycopolymers with different linkages and their oriented immobilization for glycoarray and SPR-based glyco-biosensor applications.
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Affiliation(s)
- Satya Nandana Narla
- Department of Chemistry, Chemical and Biomedical Engineering, Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, 2121 Euclid Avenue, Cleveland, OH, 44115, USA
| | - Xue-Long Sun
- Department of Chemistry, Chemical and Biomedical Engineering, Center for Gene Regulation in Health and Disease (GRHD), Cleveland State University, 2121 Euclid Avenue, Cleveland, OH, 44115, USA.
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44
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Abstract
Ipomoeassin F, a macrolide glycoresin containing an embedded disaccharide, possesses potent in vitro antitumor activity with an unknown mechanism of function. It inhibits tumor cell growth with single-digit nanomolar IC50 values, superior to many clinical chemotherapeutic drugs. To facilitate translation of its bioactivity into protein function for drug development, we report here a new synthesis for the gram-scale production of ipomoeassin F (3.8% over 17 linear steps) from commercially available starting materials. The conformation-controlled subtle reactivity differences of the hydroxyl groups in carbohydrates were utilized to quickly construct the disaccharide core, which, along with judicial selection of protecting groups, made the current synthesis very efficient. The same strategy was also applied to the smooth preparation of the 11R-epimer of ipomoeassin F for the first time. Cytotoxicity assays demonstrated the crucial role of the natural 11S configuration. In addition, cell cycle analyses and apoptosis assays on ipomoeassin F and/or its epimer were conducted. This work has laid a solid foundation for understanding the medicinal potential of the ipomoeassin family of glycolipids in the future.
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Affiliation(s)
- Guanghui Zong
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, Arkansas, 72701, USA
| | - Eric Barber
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, Arkansas, 72701, USA
| | - Hazim Aljewari
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, Arkansas, 72701, USA
| | - Jianhong Zhou
- Department of Biological Sciences, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, Arkansas, 72701, USA
| | - Zhijian Hu
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, Arkansas, 72701, USA
| | - Yuchun Du
- Department of Biological Sciences, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, Arkansas, 72701, USA
| | - Wei Q. Shi
- Department of Chemistry and Biochemistry, J. William Fulbright College of Arts & Science, University of Arkansas, Fayetteville, Arkansas, 72701, USA
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45
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Gruza M, Jatczak K, Komor K, Świerk P, Szeja W, Grynkiewicz G. Synthesis of protoescigenin glycoconjugates with O-28 triazole linker. Acta Pol Pharm 2014; 71:959-965. [PMID: 25745768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
New triazole linked conjugates were obtained from protoescigenin monopropargyl ethers and sugar azides, under Cu(II) salt promotion in good yield, without losing isopropylidene protection.
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46
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Komor K, Szeja W, Komor R, Pastuch-Gawołek G, Thiem J. Synthesis of fucosylated uridine conjugates as potential glycosyltransferase inhibitors. Acta Pol Pharm 2014; 71:1083-1089. [PMID: 25745784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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47
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Tomkiel AM, Kowalski J, Płoszyńska J, Siergiejczyk L, Lotowski Z, Sobkowiak A, Morzycki JW. Electrochemical synthesis of glycoconjugates from activated sterol derivatives. Steroids 2014; 82:60-7. [PMID: 24486463 DOI: 10.1016/j.steroids.2014.01.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Revised: 01/13/2014] [Accepted: 01/20/2014] [Indexed: 11/28/2022]
Abstract
Several derivatives of cholesterol and other 3β-hydroxy-Δ(5)-steroids were prepared and tested as sterol donors in electrochemical reactions with sugar alcohols. The reactions afforded glycoconjugates with sugar linked to a steroid moiety by an ether bond. Readily available sterol diphenylphosphates yielding up to 54% of the desired glycoconjugate were found to be the best sterol donors.
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Affiliation(s)
- Aneta M Tomkiel
- Institute of Chemistry, University of Białystok, Hurtowa 1, 15-399 Białystok, Poland
| | - Jan Kowalski
- Faculty of Chemistry, Rzeszów University of Technology, P.O. Box 85, 35-959 Rzeszów, Poland
| | - Jolanta Płoszyńska
- Faculty of Chemistry, Rzeszów University of Technology, P.O. Box 85, 35-959 Rzeszów, Poland
| | - Leszek Siergiejczyk
- Institute of Chemistry, University of Białystok, Hurtowa 1, 15-399 Białystok, Poland
| | - Zenon Lotowski
- Institute of Chemistry, University of Białystok, Hurtowa 1, 15-399 Białystok, Poland
| | - Andrzej Sobkowiak
- Faculty of Chemistry, Rzeszów University of Technology, P.O. Box 85, 35-959 Rzeszów, Poland
| | - Jacek W Morzycki
- Institute of Chemistry, University of Białystok, Hurtowa 1, 15-399 Białystok, Poland.
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48
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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49
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Kumar D, Mishra KB, Mishra BB, Mondal S, Tiwari VK. Click chemistry inspired highly facile synthesis of triazolyl ethisterone glycoconjugates. Steroids 2014; 80:71-9. [PMID: 24316164 DOI: 10.1016/j.steroids.2013.11.022] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 11/05/2013] [Accepted: 11/23/2013] [Indexed: 01/31/2023]
Abstract
Numerous deoxy-azido sugars 3 were prepared by the reaction of tosyl/bromo sugars with NaN3 in dry DMF under heating condition. The 1,3-dipolar cycloaddition of deoxy-azido sugars 3 with ethisterone 4 to afford regioselective triazole-linked ethisterone glycoconjugates 5 was investigated in the presence of CuI and DIPEA in dichloromethane or CuSO4·5H2O and sodium ascorbate in aqueous medium. All the developed compounds were characterized by spectroscopic analysis (IR, (1)H &(13)C NMR, and MS spectra). Structure of triazolyl ethisterone glycoconjugate 5a has been further confirmed by its Single Crystal X-ray analysis.
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Affiliation(s)
- Dhananjay Kumar
- Department of Chemistry, Centre of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Kunj B Mishra
- Department of Chemistry, Centre of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Bhuwan B Mishra
- Department of Chemistry, Centre of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Saheli Mondal
- Department of Chemistry, Centre of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Centre of Advanced Study, Faculty of Science, Banaras Hindu University, Varanasi 221005, India.
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50
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Mauris J, Mantelli F, Woodward AM, Cao Z, Bertozzi CR, Panjwani N, Godula K, Argüeso P. Modulation of ocular surface glycocalyx barrier function by a galectin-3 N-terminal deletion mutant and membrane-anchored synthetic glycopolymers. PLoS One 2013; 8:e72304. [PMID: 23977277 PMCID: PMC3747151 DOI: 10.1371/journal.pone.0072304] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 07/09/2013] [Indexed: 12/20/2022] Open
Abstract
Background Interaction of transmembrane mucins with the multivalent carbohydrate-binding protein galectin-3 is critical to maintaining the integrity of the ocular surface epithelial glycocalyx. This study aimed to determine whether disruption of galectin-3 multimerization and insertion of synthetic glycopolymers in the plasma membrane could be used to modulate glycocalyx barrier function in corneal epithelial cells. Methodology/Principal Findings Abrogation of galectin-3 biosynthesis in multilayered cultures of human corneal epithelial cells using siRNA, and in galectin-3 null mice, resulted in significant loss of corneal barrier function, as indicated by increased permeability to the rose bengal diagnostic dye. Addition of β-lactose, a competitive carbohydrate inhibitor of galectin-3 binding activity, to the cell culture system, transiently disrupted barrier function. In these experiments, treatment with a dominant negative inhibitor of galectin-3 polymerization lacking the N-terminal domain, but not full-length galectin-3, prevented the recovery of barrier function to basal levels. As determined by fluorescence microscopy, both cellobiose- and lactose-containing glycopolymers incorporated into apical membranes of corneal epithelial cells, independently of the chain length distribution of the densely glycosylated, polymeric backbones. Membrane incorporation of cellobiose glycopolymers impaired barrier function in corneal epithelial cells, contrary to their lactose-containing counterparts, which bound to galectin-3 in pull-down assays. Conclusions/Significance These results indicate that galectin-3 multimerization and surface recognition of lactosyl residues is required to maintain glycocalyx barrier function at the ocular surface. Transient modification of galectin-3 binding could be therapeutically used to enhance the efficiency of topical drug delivery.
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Affiliation(s)
- Jerome Mauris
- Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Flavio Mantelli
- Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Ashley M. Woodward
- Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Ziyhi Cao
- Department of Ophthalmology, Center for Vision Research, Tufts University Medical School, Boston, Massachusetts, United States of America
| | - Carolyn R. Bertozzi
- Departments of Chemistry, Molecular and Cell Biology and Howard Hughes Medical Institute, University of California, United States of America
- Materials Sciences Division and The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Noorjahan Panjwani
- Department of Ophthalmology, Center for Vision Research, Tufts University Medical School, Boston, Massachusetts, United States of America
| | - Kamil Godula
- Materials Sciences Division and The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, United States of America
| | - Pablo Argüeso
- Schepens Eye Research Institute and Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, Massachusetts, United States of America
- * E-mail:
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