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Cui G, Bai Y, Li W, Gao Z, Chen S, Qiu N, Satoh T, Kakuchi T, Duan Q. Synthesis and characterization of Eu(III) complexes of modified d-glucosamine and poly(N-isopropylacrylamide). MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:603-608. [PMID: 28576028 DOI: 10.1016/j.msec.2017.03.059] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 03/06/2017] [Accepted: 03/09/2017] [Indexed: 10/20/2022]
Abstract
A series of chain-end functional polymers composed of poly(N-isopropylacrylamide) (PNIPAM) and 2-amino-2-deoxy-d-glucopyranose(d-glucosamine, GA) was synthesized via atom transfer radical polymerization (ATRP). Novel fluorescent complexes of glucosamine-PNI- PAM/Eu(III) were then formed by chelation of the polymers and europium(III) ions. The aqueous solutions of the polymers and its Eu(III) complexes exhibited a lower critical solution temperatures (LCSTs), and which were approximately equal to body temperature. Cell viability assays suggested that these thermosensitive polymers and Eu(III) complexes showed excellent biocompatibility in vitro.
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Affiliation(s)
- Guihua Cui
- School of Pharmacy, Jilin Medical University, Jilin 132013, China; Department of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China
| | - Yu Bai
- School of Pharmacy, Jilin Medical University, Jilin 132013, China
| | - Wenliang Li
- School of Pharmacy, Jilin Medical University, Jilin 132013, China; Key Laboratory of Preparation and Application of Environmental Friendly Materials, Ministry of Education, Jilin Normal University, Changchun 130103, China.
| | - Zhengguo Gao
- Chemical and Engineering College, Yantai University, Yantai, Shandong 264005, China
| | - Shuiying Chen
- Department of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China
| | - Nannan Qiu
- Department of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China
| | - Toshifumi Satoh
- Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Toyoji Kakuchi
- Department of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China
| | - Qian Duan
- Department of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin 130022, China.
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End-Functionalized Poly(N-isopropylacrylamide) with d-Glucosamine through Different Initiator from C-1 and C-2 Positions via Atom Transfer Radical Polymerization. MATERIALS 2016; 9:ma9110913. [PMID: 28774036 PMCID: PMC5457247 DOI: 10.3390/ma9110913] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 10/17/2016] [Accepted: 10/20/2016] [Indexed: 01/09/2023]
Abstract
Regioselective modification of d-glucosamine (2-amino-2-deoxy-d-glucopyranose, GA) through C-1 and C-2 positions to synthesized thermo-responsive D-Glucosamine-poly(N-iso-propylacrylamide) (PNIPAM) via atom transfer radical polymerization (ATRP) was investigated for the first time. Two different schemes of the synthesis for GA derivatives (GA-PNIPAM (i) and (ii)) with well-defined structures using 3,4,6-tri-o-acetyl-2-deoxy-2-phthalimido-β-d-glucopyranose and 1,3,4,6-tetra-o-acetyl-2-amino-2-deoxy-β-d-glucopyranose intermediates were examined. The GA-PNIPAM (ii) had an amino at C-2 position, while there was a hydroxyl in GA-PNIPAM (i) at this position. Both the resulting oligomers (i) and (ii) had a narrow dispersity, and no significant cytotoxic response of copolymers (i) and (ii) was observed in the cell line over the concentration range from 0.1 μg/mL to 1000 μg/mL at any of the exposure times. In addition, it was discovered that GA-PNIPAM (i) and (ii) inhibited the proliferation of Human Hepatocellular Carcinoma Cells HepG2 as the concentration and the time changed, and the inhibitory activity of polymer (ii) was higher than that of he (i). The results suggest that the GA-PNIPAM polymers show excellent biocompatibility in vitro.
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Schocker NS, Portillo S, Brito CRN, Marques AF, Almeida IC, Michael K. Synthesis of Galα(1,3)Galβ(1,4)GlcNAcα-, Galβ(1,4)GlcNAcα- and GlcNAc-containing neoglycoproteins and their immunological evaluation in the context of Chagas disease. Glycobiology 2015; 26:39-50. [PMID: 26384953 DOI: 10.1093/glycob/cwv081] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 09/09/2015] [Indexed: 01/07/2023] Open
Abstract
The protozoan parasite, Trypanosoma cruzi, the etiologic agent of Chagas disease (ChD), has a cell surface covered by immunogenic glycoconjugates. One of the immunodominant glycotopes, the trisaccharide Galα(1,3)Galβ(1,4)GlcNAcα, is expressed on glycosylphosphatidylinositol-anchored mucins of the infective trypomastigote stage of T. cruzi and triggers high levels of protective anti-α-Gal antibodies (Abs) in infected individuals. Here, we have efficiently synthesized the mercaptopropyl glycoside of that glycotope and conjugated it to maleimide-derivatized bovine serum albumin (BSA). Chemiluminescent-enzyme-linked immunosorbent assay revealed that Galα(1,3)Galβ(1,4)GlcNAcα-BSA is recognized by purified anti-α-Gal Abs from chronic ChD patients ∼230-fold more strongly than by anti-α-Gal Abs from sera of healthy individuals (NHS anti-α-Gal). Similarly, the pooled sera of chronic Chagas disease patients (ChHSP) recognized Galα(1,3)Galβ(1,4)GlcNAcα ∼20-fold more strongly than pooled NHS. In contrast, the underlying disaccharide Galβ(1,4)GlcNAcα and the monosaccharide GlcNAcα or GlcNAcβ conjugated to BSA are poorly or not recognized by purified anti-α-Gal Abs or sera from Chagasic patients or healthy individuals. Our results highlight the importance of the terminal Galα moiety for recognition by Ch anti-α-Gal Abs and the lack of Abs against nonself Galβ(1,4)GlcNAcα and GlcNAcα glycotopes. The substantial difference in binding of Ch vs. NHS anti-α-Gal Abs to Galα(1,3)Galβ(1,4)GlcNAcα-BSA suggests that this neoglycoprotein (NGP) might be suitable for experimental vaccination. To this end, the Galα(1,3)Galβ(1,4)GlcNAcα-BSA NGP was then used to immunize α1,3-galactosyltransferase-knockout mice, which produced antibody titers 40-fold higher as compared with pre-immunization titers. Taken together, our results indicate that the synthetic Galα(1,3)Galβ(1,4)GlcNAcα glycotope coupled to a carrier protein could be a potential diagnostic and vaccine candidate for ChD.
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Affiliation(s)
| | - Susana Portillo
- Department of Biological Sciences, Border Biomedical Research Center, University of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968, USA
| | - Carlos R N Brito
- Department of Biological Sciences, Border Biomedical Research Center, University of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968, USA Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Alexandre F Marques
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Igor C Almeida
- Department of Biological Sciences, Border Biomedical Research Center, University of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968, USA
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Kang HK, Seo CH, Park Y. The effects of marine carbohydrates and glycosylated compounds on human health. Int J Mol Sci 2015; 16:6018-56. [PMID: 25785562 PMCID: PMC4394518 DOI: 10.3390/ijms16036018] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 02/02/2023] Open
Abstract
Marine organisms have been recognized as a valuable source of bioactive compounds with industrial and nutraceutical potential. Recently, marine-derived carbohydrates, including polysaccharides and low molecular weight glycosylated oligosaccharides, have attracted much attention because of their numerous health benefits. Moreover, several studies have reported that marine carbohydrates exhibit various biological activities, including antioxidant, anti-infection, anticoagulant, anti-inflammatory, and anti-diabetic effects. The present review discusses the potential industrial applications of bioactive marine carbohydrates for health maintenance and disease prevention. Furthermore, the use of marine carbohydrates in food, cosmetics, agriculture, and environmental protection is discussed.
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Affiliation(s)
- Hee-Kyoung Kang
- Department of Biomedical Science, Chosun University, Gwangju 501-759, Korea.
| | - Chang Ho Seo
- Department of Bioinformatics, Kongju National University, Kongju 314-701, Korea.
| | - Yoonkyung Park
- Department of Biomedical Science, Chosun University, Gwangju 501-759, Korea.
- Research Center for Proteineous Materials, Chosun University, Gwangju 501-759, Korea.
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Albler C, Schmid W. From Amino Acids to Fluorine-Containing Carbohydrates: De Novo Synthesis of 2-Amino-4-Fluoroxylose and -lyxose. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Albler C, Schmid W. Synthetic Routes towards Fluorine-Containing Amino Sugars: Synthesis of Fluorinated Analogues of Tomosamine and 4-Amino-4-deoxyarabinose. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301614] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Slámová K, Gažák R, Bojarová P, Kulik N, Ettrich R, Pelantová H, Sedmera P, Křen V. 4-Deoxy-substrates for β-N-acetylhexosaminidases: How to make use of their loose specificity. Glycobiology 2010; 20:1002-9. [DOI: 10.1093/glycob/cwq058] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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van Dijkum E, Danac R, Hughes DJ, Wood R, Rees A, Wilkinson BL, Fairbanks AJ. Synthesis of glucose derivatives modified at the 4-OH as potential chain-terminators of cellulose biosynthesis; herbicidal activity of simple monosaccharide derivatives. Org Biomol Chem 2009; 7:1097-105. [PMID: 19262928 DOI: 10.1039/b820830a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
A series of D-glucose derivatives that have been modified at C-4 were synthesised from D-galactose as potential chain terminators of cellulose biosynthesis. Two compounds displayed herbicidal activity in pre-emergence tests and in addition a cell expansion assay at higher concentrations revealed symptomology of a third compound that was indicative of inhibition of cellulose biosynthesis.
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Affiliation(s)
- Emma van Dijkum
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, UK OX1 3TA
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Danac R, Ball L, Gurr SJ, Fairbanks AJ. Synthesis of UDP-glucose derivatives modified at the 3-OH as potential chain terminators of beta-glucan biosynthesis. Carbohydr Res 2008; 343:1012-22. [PMID: 18336802 DOI: 10.1016/j.carres.2008.01.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Revised: 01/17/2008] [Accepted: 01/22/2008] [Indexed: 01/07/2023]
Abstract
A series of UDP-D-glucose derivatives and precursors that have been modified at C-3 were synthesised from D-glucose as potential chain terminators of beta-glucan biosynthesis. None of the UDP-derivatives or the precursors tested displayed significant anti-fungal activity in a series of germination assays on the dermatophyte Trichophyton rubrum.
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Affiliation(s)
- Ramona Danac
- Chemistry Research Laboratory, Department of Plant Sciences, Oxford University, Mansfield Road, Oxford OX1 3TA, UK
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Muller T, Danac R, Ball L, Gurr SJ, Fairbanks AJ. Synthesis of UDP-GlcNAc derivatives modified at OH-4 as potential chain-terminators of chitin biosynthesis. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.05.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Smellie IA, Bhakta S, Sim E, Fairbanks AJ. Synthesis of putative chain terminators of mycobacterial arabinan biosynthesis. Org Biomol Chem 2007; 5:2257-66. [PMID: 17609757 DOI: 10.1039/b704788f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The synthesis of a variety of arabinose derivatives that have been modified at C-5 was achieved from d-arabinose. The 5-fluoro and 5-methoxy compounds were converted into the corresponding farnesyl phosphodiesters as putative chain terminators of mycobacterial arabinan biosynthesis. Biological testing of these materials revealed no effective anti-mycobacterial activity.
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Affiliation(s)
- Iain A Smellie
- Chemistry Research Laboratory, Oxford University, Mansfield Road, Oxford, UK OX1 3TA
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