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Ghosh K, Takahashi D, Kotake T. Plant type II arabinogalactan: Structural features and modification to increase functionality. Carbohydr Res 2023; 529:108828. [PMID: 37182471 DOI: 10.1016/j.carres.2023.108828] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/16/2023]
Abstract
Type II arabinogalactans (AGs) are a highly diverse class of plant polysaccharides generally encountered as the carbohydrate moieties of certain extracellular proteoglycans, the so-called arabinogalactan-proteins (AGPs), which are found on plasma membranes and in cell walls. The basic structure of type II AG is a 1,3-β-D-galactan main chain with 1,6-β-D-galactan side chains. The side chains are further decorated with other sugars such as α-l-arabinose and β-d-glucuronic acid. In addition, AGs with 1,6-β-D-galactan as the main chain, which are designated as 'type II related AG' in this review, can also be found in several plants. Due to their diverse and heterogenous features, the determination of carbohydrate structures of type II and type II related AGs is not easy. On the other hand, these complex AGs are scientifically and commercially attractive materials whose structures can be modified by chemical and biochemical approaches for specific purposes. In the current review, what is known about the chemical structures of type II and type II related AGs from different plant sources is outlined. After that, structural analysis techniques are considered and compared. Finally, structural modifications that enhance or alter functionality are highlighted.
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Affiliation(s)
- Kanika Ghosh
- Department of Chemistry, Bidhan Chandra College, Asansol, 713304, West Bengal, India.
| | - Daisuke Takahashi
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama, 338-8570, Japan
| | - Toshihisa Kotake
- Division of Life Science, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama, 338-8570, Japan; Green Bioscience Research Center, Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama, 338-8570, Japan.
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Exploiting diol reactivity for the access to unprecedented low molecular weight curdlan sulfate polysaccharides. Carbohydr Polym 2021; 269:118324. [PMID: 34294336 DOI: 10.1016/j.carbpol.2021.118324] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 05/31/2021] [Accepted: 06/07/2021] [Indexed: 11/24/2022]
Abstract
Curdlan is a bacterial sourced polysaccharide, consisting of a linear backbone of β-1 → 3-linked glucose (Glc) units. The high interest in pharmaceutical applications of curdlan and derivatives thereof is fueling the study of multi-step sequences for regioselective modifications of its structure. Here we have developed semi-synthetic sequences based on a regioselective protection-sulfation-deprotection approach, allowing the access to some, new, low molecular weight curdlan polysaccharide derivatives with unprecedented sulfation patterns. Three different semi-synthetic schemes were investigated, all relying upon the installation of a cyclic benzylidene protecting group on Glc O-4,6-diols, followed by either direct sulfation and deprotection, or some additional steps - including a hydrolytic or oxidative cleavage of the benzylidene rings - prior to sulfation and deprotection. The six obtained polysaccharides were subjected to a detailed structural characterization by 2D-NMR analysis, revealing that some of them showed the majority of Glc units along the polymeric backbone decorated by unprecedented sulfation motifs.
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Ray B, Schütz M, Mukherjee S, Jana S, Ray S, Marschall M. Exploiting the Amazing Diversity of Natural Source-Derived Polysaccharides: Modern Procedures of Isolation, Engineering, and Optimization of Antiviral Activities. Polymers (Basel) 2020; 13:E136. [PMID: 33396933 PMCID: PMC7794815 DOI: 10.3390/polym13010136] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 12/28/2020] [Accepted: 12/28/2020] [Indexed: 12/15/2022] Open
Abstract
Naturally occurring polysaccharide sulfates are highly diverse, owning variations in the backbone structure, linkage pattern and stereochemistry, branching diversity, sulfate content and positions of sulfate group(s). These structural characteristics bring about diverse sulfated polymers with dissimilar negative charge densities and structure-activity relationships. Herein, we start with a short discussion of techniques needed for extraction, purification, chemical sulfation, and structural characterization of polysaccharides. Processes of isolation and sulfation of plant-derived polysaccharides are challenging and usually involve two steps. In this context, we describe an integrated extraction-sulfation procedure that produces polysaccharide sulfates from natural products in one step, thereby generating additional pharmacological activities. Finally, we provide examples of the spectrum of natural source-derived polysaccharides possessing specific features of bioactivity, in particular focusing on current aspects of antiviral drug development and drug-target interaction. Thus, the review presents a detailed view on chemically engineered polysaccharides, especially sulfated derivatives, and underlines their promising biomedical perspectives.
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Affiliation(s)
- Bimalendu Ray
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal 713104, India; (B.R.); (S.M.); (S.J.)
| | - Martin Schütz
- Institute for Clinical and Molecular Virology, Friedrich-Alexander University (FAU) of Erlangen-Nürnberg, 91054 Erlangen, Germany;
| | - Shuvam Mukherjee
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal 713104, India; (B.R.); (S.M.); (S.J.)
| | - Subrata Jana
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal 713104, India; (B.R.); (S.M.); (S.J.)
| | - Sayani Ray
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal 713104, India; (B.R.); (S.M.); (S.J.)
| | - Manfred Marschall
- Department of Chemistry, The University of Burdwan, Burdwan, West Bengal 713104, India; (B.R.); (S.M.); (S.J.)
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Heo J, Sobiech TA, Kutscher HL, Chaves L, Sukumaran DK, Karki S, Dube A, Prasad PN, Reynolds JL. Hybrid Curdlan Poly(γ -Glutamic Acid) Nanoassembly for Immune Modulation in Macrophage. Macromol Biosci 2020; 21:e2000358. [PMID: 33283480 DOI: 10.1002/mabi.202000358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/12/2020] [Indexed: 11/06/2022]
Abstract
A nanoformulation composed of curdlan, a linear polysaccharide of 1,3-β-linked d-glucose units, hydrogen bonded to poly(γ -glutamic acid) (PGA), was developed to stimulate macrophage. Curdlan/PGA nanoparticles (C-NP) are formulated by physically blending curdlan (0.2 mg mL-1 in 0.4 m NaOH) with PGA (0.8 mg mL-1 ). Forster resonance energy transfer (FRET) analysis demonstrates a heterospecies interpolymer complex formed between curdlan and PGA. The 1 H-NMR spectra display significant peak broadening as well as downfield chemical shifts of the hydroxyl proton resonances of curdlan, indicating potential intermolecular hydrogen bonding interactions. In addition, the cross peaks in 1 H-1 H 2D-NOESY suggest intermolecular associations between the OH-2/OH-4 hydroxyl groups of curdlan and the carboxylic-/amide-groups of PGA via hydrogen bonding. Intracellular uptake of C-NP occurs over time in human monocyte-derived macrophage (MDM). Furthermore, C-NP nanoparticles dose-dependently increase gene expression for TNF-α, IL-6, and IL-8 at 24 h in MDM. C-NP nanoparticles also stimulate the release of IL-lβ, MCP-1, TNF-α, IL-8, IL-12p70, IL-17, IL-18, and IL-23 from MDM. Overall, this is the first demonstration of a simplistic nanoformulation formed by hydrogen bonding between curdlan and PGA that modulates cytokine gene expression and release of cytokines from MDM.
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Affiliation(s)
- Jeongyun Heo
- Institute for Laser, Photonics and Biophotonics, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.,Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Clinical Translational Research Center, The State University of New York at Buffalo, Buffalo, NY, 14203, USA
| | - Thomas A Sobiech
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Hilliard L Kutscher
- Institute for Laser, Photonics and Biophotonics, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.,Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Clinical Translational Research Center, The State University of New York at Buffalo, Buffalo, NY, 14203, USA.,Department of Anesthesiology, The State University of New York at Buffalo, Buffalo, NY, 14203, USA
| | - Lee Chaves
- Division of Nephrology, Department of Medicine, Clinical Translational Research Center, The State University of New York at Buffalo, Buffalo, NY, 14203, USA
| | - Dinesh K Sukumaran
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Shanta Karki
- Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Clinical Translational Research Center, The State University of New York at Buffalo, Buffalo, NY, 14203, USA
| | - Admire Dube
- School of Pharmacy, University of the Western Cape, Bellville, Cape Town, 7535, South Africa
| | - Paras N Prasad
- Institute for Laser, Photonics and Biophotonics, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA.,Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, 14260, USA
| | - Jessica L Reynolds
- Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Clinical Translational Research Center, The State University of New York at Buffalo, Buffalo, NY, 14203, USA
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Abstract
Β-glucan is a strongly hydrophilic non-starchy polysaccharide, which, when incorporated in food, is renowned for its ability to alter functional characteristics such as viscosity, rheology, texture, and sensory properties of the food product. The functional properties of β-glucans are directly linked to their origin/source, molecular weight, and structural features. The molecular weight and structural/conformational features are in turn influenced by method of extraction and modification of the β-glucan. For example, whereas physical modification techniques influence only the spatial structures, modification by chemical agents, enzyme hydrolysis, mechanical treatment, and irradiation affect both spatial conformation and primary structures of β-glucan. Consequently, β-glucan can be modified (via one or more of the aforementioned techniques) into forms that have desired morphological, rheological, and (bio)functional properties. This review describes how various modification techniques affect the structure, properties, and applications of β-glucans in the food industry.
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Song J, Wu Y, Jiang G, Feng L, Wang Z, Yuan G, Tong H. Sulfated polysaccharides from Rhodiola sachalinensis reduce d-gal-induced oxidative stress in NIH 3T3 cells. Int J Biol Macromol 2019; 140:288-293. [PMID: 31400419 DOI: 10.1016/j.ijbiomac.2019.08.052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/17/2019] [Accepted: 08/06/2019] [Indexed: 12/26/2022]
Abstract
In this study, three sulfated polysaccharides (S-RSP1-2, S-RSP1-4 and S-RSP1-8) from Rhodiola sachalinensis were produced by chlorosulfonic acid-pyridine method. d-gal was used to develop an oxidative stress model in the mouse embryonic fibroblast cell line NIH 3T3. Effects of the three sulfated polysaccharides on d-gal-induced oxidative stress were investigated. The results showed that S-RSP1-4 improved the viability of the d-gal-induced oxidative stress in NIH 3T3 cells. The sulfated polysaccharides were found to have a better protective effect against d-gal-induced oxidative stress as compared to the native polysaccharide. Scanning electronmicroscopy also showed a significant change in the surface morphology of sulfated polysaccharides. In addition, the sulfated polysaccharides had noticeable DPPH radical-scavenging activity. In summary, our results demonstrated that d-gal was able to induce oxidative stress in NIH 3T3 cells, and sulfated group might play an important role in resistance to d-gal-induced oxidative damage.
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Affiliation(s)
- Jianxi Song
- Wood Material Science and Engineering Key Laboratory of Jilin Province, Beihua University, Jilin 132013, China; Analytical and Testing Center, Beihua University, Jilin 132013, China
| | - Ye Wu
- Wood Material Science and Engineering Key Laboratory of Jilin Province, Beihua University, Jilin 132013, China
| | - Guiquan Jiang
- Wood Material Science and Engineering Key Laboratory of Jilin Province, Beihua University, Jilin 132013, China
| | - Lijuan Feng
- Wood Material Science and Engineering Key Laboratory of Jilin Province, Beihua University, Jilin 132013, China; Analytical and Testing Center, Beihua University, Jilin 132013, China
| | - Zhiguo Wang
- Analytical and Testing Center, Beihua University, Jilin 132013, China
| | - Guangxin Yuan
- School of Pharmacy, Beihua University, Jilin 132013, China.
| | - Haibin Tong
- College of Life and Environmental Science, Wenzhou University, Wenzhou 325035, China.
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Caputo HE, Straub JE, Grinstaff MW. Design, synthesis, and biomedical applications of synthetic sulphated polysaccharides. Chem Soc Rev 2019; 48:2338-2365. [DOI: 10.1039/c7cs00593h] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
This review summarizes the synthetic methods to sulphated polysaccharides, describes their compositional and structural diversity in regards to activity, and showcases their biomedical applications.
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Affiliation(s)
| | | | - Mark W. Grinstaff
- Department of Chemistry
- Boston University
- Boston
- USA
- Department of Biomedical Engineering
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Kareem N, Yates E, Skidmore M, Hoole D. In vitro investigations on the effects of semi-synthetic, sulphated carbohydrates on the immune status of cultured common carp (Cyprinus carpio) leucocytes. FISH & SHELLFISH IMMUNOLOGY 2018; 74:213-222. [PMID: 29289653 DOI: 10.1016/j.fsi.2017.12.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 12/15/2017] [Accepted: 12/22/2017] [Indexed: 06/07/2023]
Abstract
The rapid emergence of drug resistance, unfavourable immunosuppression and mounting evidence to suggest the deleterious accumulation of drug breakdown residues within animal tissues has driven a strong desire to move away from these current methods of disease control. Some natural products such as β-glucan, which are extracted from, for example, plants and fungi, are able to modulate the immune system and increase protection against diseases. However, these products are heterogeneous and their effects can be variable thus limiting their applicability and reliability. Carbohydrates were modified via chemical sulphation and these semi-synthetic, sulphated carbohydrates analysed for their immunological activity utilising carp pronephric cells and a carp leucocyte cell line (CLC). A sulphated β(1,4)-glucan, methyl hydroxyethyl cellulose sulphate (MHCS), demonstrated a stimulatory effect on fish immune cells. MHCS induced a range of bioactive effects in carp leucocyte cells whilst not affecting cell viability when cells were exposed for 24 h at concentrations of 1-150 μgml-1. MHCS stimulated the innate immune system where a significant increase in respiratory burst activity was observed at concentrations 25-250 μgml-1 in comparison to control (sterile water), cellulose ether, MacroGard® and zymosan. Also, under in mock bacterial and viral infection conditions i.e. Lipopolysaccharide (LPS) and polyinosinic:polycytidylic acid (Poly(I:C)), MHCS enhanced the immune responses of pronephric cells by stimulating the respiratory burst activity at concentrations 50 and 150 μgml-1. MHCS also enhanced the expression of cytokines including interleukin 1 beta (IL1β), tumor necrosis factor alpha 1 and 2 (TNFα 1,2), interferons alpha 2 (IFN α2) and inducible nitric oxide synthase (iNOS) in carp pronephric cells. It is proposed that this new semi-synthetic carbohydrate is a potential candidate for the development of a new generation of immunostimulants and adjuvants for use in vaccination strategies in aquaculture.
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Affiliation(s)
- N Kareem
- School of Life Sciences, Keele University, Keele, Staffordshire, ST5 5BG, UK; Faculty of Agricultural Sciences, University of Sulaimani, Kurdistan Region, Iraq
| | - E Yates
- Institute of Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, UK
| | - M Skidmore
- School of Life Sciences, Keele University, Keele, Staffordshire, ST5 5BG, UK; Institute of Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, UK
| | - D Hoole
- School of Life Sciences, Keele University, Keele, Staffordshire, ST5 5BG, UK.
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Liang L, Ao L, Ma T, Ni Y, Liao X, Hu X, Song Y. Sulfated modification and anticoagulant activity of pumpkin (Cucurbita pepo, Lady Godiva) polysaccharide. Int J Biol Macromol 2018; 106:447-455. [DOI: 10.1016/j.ijbiomac.2017.08.035] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/19/2017] [Accepted: 08/04/2017] [Indexed: 10/19/2022]
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Identification of Heparin Modifications and Polysaccharide Inhibitors of Plasmodium falciparum Merozoite Invasion That Have Potential for Novel Drug Development. Antimicrob Agents Chemother 2017; 61:AAC.00709-17. [PMID: 28893781 DOI: 10.1128/aac.00709-17] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 09/03/2017] [Indexed: 11/20/2022] Open
Abstract
Despite recent successful control efforts, malaria remains a leading global health burden. Alarmingly, resistance to current antimalarials is increasing and the development of new drug families is needed to maintain malaria control. Current antimalarials target the intraerythrocytic developmental stage of the Plasmodium falciparum life cycle. However, the invasive extracellular parasite form, the merozoite, is also an attractive target for drug development. We have previously demonstrated that heparin-like molecules, including those with low molecular weights and low anticoagulant activities, are potent and specific inhibitors of merozoite invasion and blood-stage replication. Here we tested a large panel of heparin-like molecules and sulfated polysaccharides together with various modified chemical forms for their inhibitory activity against P. falciparum merozoite invasion. We identified chemical modifications that improve inhibitory activity and identified several additional sulfated polysaccharides with strong inhibitory activity. These studies have important implications for the further development of heparin-like molecules as antimalarial drugs and for understanding merozoite invasion.
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Liu Y, Xu J, Zong A, Wang J, Liu Y, Jia W, Jin J, Yan G, Zhang Y. Anti-angiogenic activity and mechanism of a chemically sulfated natural glucan from Phellinus ribis. Int J Biol Macromol 2017; 107:2475-2483. [PMID: 29074083 DOI: 10.1016/j.ijbiomac.2017.10.134] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/26/2017] [Accepted: 10/20/2017] [Indexed: 02/02/2023]
Abstract
A sulfated polysaccharide named PRP-S16 was obtained by sulfation of a glucan from Phellinus ribis using the chlorosulfonic acid method. PRP-S16 could significantly block the formation of new vessels in chicken chorioallantoic membrane (CAM). It could also inhibit the proliferation, migration, and tube formation and significantly reduced the mRNA expression of vascular endothelial growth factor (VEGF) in EA.hy926 endothelial cells. Western blotting indicated that PRP-S16 down regulated the protein expression of VEGF and VEGF receptor-1 (VEGFR-1), and inhibited the phosphorylation of VEGFR-2, protein kinase B (Akt) and extracellular signal-regulated kinase (ERK1/2) in EA.hy926 cells. These findings suggest that the mechanism of action of the anti-angiogenesis activity of PRP-S16 is related to the inhibition of VEGF-induced signaling pathway. PRP-S16 might be utilized as an effective antagonist in combating diseases associated with angiogenesis.
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Affiliation(s)
- Yuhong Liu
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, Shandong, PR China.
| | - Jiazhen Xu
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, Shandong, PR China
| | - Aizhen Zong
- Institute of Agro-Food Science Technology, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, PR China
| | - Jihui Wang
- Comprehensive Teaching Experimental Center, Shandong University of Traditional Chinese Medicine, Jinan, 250355, Shandong, PR China
| | - Yuguo Liu
- Department of Pharmacy, Shandong Tumor Hospital, Jinan 250117, China
| | - Wei Jia
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, Shandong, PR China
| | - Juan Jin
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, Shandong, PR China
| | - Guangling Yan
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, Shandong, PR China
| | - Yongqing Zhang
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan, 250355, Shandong, PR China.
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Skidmore MA, Mustaffa KMF, Cooper LC, Guimond SE, Yates EA, Craig AG. A semi-synthetic glycosaminoglycan analogue inhibits and reverses Plasmodium falciparum cytoadherence. PLoS One 2017; 12:e0186276. [PMID: 29045442 PMCID: PMC5646806 DOI: 10.1371/journal.pone.0186276] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 09/28/2017] [Indexed: 11/18/2022] Open
Abstract
A feature of mature Plasmodium falciparum parasitized red blood cells is their ability to bind surface molecules of the microvascular endothelium via the parasite-derived surface protein Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1). This ligand is associated with the cytoadherence pathology observed in severe malaria. As pRBC treated with effective anti-malarial drugs are still able to cytoadhere, there is therefore a need to find an adjunct treatment that can inhibit and reverse the adhesion process. One semi-synthetic, sulfated polysaccharide has been identified that is capable of inhibiting and reversing sequestration of pRBC on endothelial cells in vitro under physiological flow conditions. Furthermore, it exhibits low toxicity in the intrinsic (APTT assay) and extrinsic (PT assay) clotting pathways, as well as exhibiting minimal effects on cell (HUVEC) viability (MTT proliferation assay). These findings suggest that carbohydrate-based anti-adhesive candidates may provide potential leads for therapeutics for severe malaria.
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Affiliation(s)
- Mark A. Skidmore
- School of Biological Sciences, University of Liverpool, Crown Street, Liverpool, United Kingdom
| | | | - Lynsay C. Cooper
- School of Life Sciences, Keele University, Huxley Building, Keele, Staffordshire, United Kingdom
| | - Scott E. Guimond
- School of Biological Sciences, University of Liverpool, Crown Street, Liverpool, United Kingdom
| | - Edwin A. Yates
- School of Biological Sciences, University of Liverpool, Crown Street, Liverpool, United Kingdom
| | - Alister G. Craig
- Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
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Construction and characterization of nanosized curdlan sulfate/chitosan polyelectrolyte complex toward drug release of zidovudine. Carbohydr Polym 2017; 174:209-216. [DOI: 10.1016/j.carbpol.2017.06.082] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/13/2017] [Accepted: 06/20/2017] [Indexed: 11/18/2022]
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A review of chemical methods for the selective sulfation and desulfation of polysaccharides. Carbohydr Polym 2017; 174:1224-1239. [DOI: 10.1016/j.carbpol.2017.07.017] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 05/22/2017] [Accepted: 07/06/2017] [Indexed: 11/24/2022]
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Jindal M, Rana V, Kumar V, Sapra B, Tiwary AK. Synthesis, physico-chemical and biomedical applications of sulfated Aegle marmelos gum: Green chemistry approach. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2013.07.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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Anane RF, Sun H, Zhao L, Wang L, Lin C, Mao Z. Improved curdlan production with discarded bottom parts of Asparagus spear. Microb Cell Fact 2017; 16:59. [PMID: 28388915 PMCID: PMC5384130 DOI: 10.1186/s12934-017-0671-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 03/29/2017] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND This work evaluated the improvement of curdlan production of Agrobacterium sp. ATCC 31749 by using culture medium containing juice of discarded bottom part of green Asparagus spear (MJDA). Curdlan production was carried out using Agrobacterium sp. ATCC 31749 in flasks with different volumes of MJDA and its non-juice-adding control (CK) incubated in shaker at 30 °C, 200 rpm rotation for 168 h. RESULTS All MJDA media increased Agrobacterium sp. ATCC 31749 cell mass and enhanced the cells' ability to utilise sucrose, the carbon source for curdlan biosynthesis, and thereby produced higher concentration of curdlan than CK which is used for commercial production of curdlan. After 168 h of fermentation, 10% MJDA produced 40.2 g/l of curdlan whiles CK produced 21.1 g/l. Curdlan production was increased by 90.4% higher in 10% MJDA than CK. Curdlan produced by 10% MJDA contains 1.2 and 1.5 µg/ml of Asparagus flavonoids and saponins respectively as additives which have wide range of health benefits. The mass of sucrose needed to produce 1.0 g curdlan by Agrobacterium sp. ATCC 31749 in CK is 1.7-fold more than in 10% MJDA. CONCLUSION The results strongly revealed that 5-10% MJDA is a good curdlan fermentation media which increase curdlan production yield with cheaper cost of production and simultaneously reduce environmental waste resulting from the large scaled discarded bottom parts of green Asparagus spear during Asparagus production.
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Affiliation(s)
- Rex Frimpong Anane
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, 650201 China
| | - Huifang Sun
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, 650201 China
| | - Lamei Zhao
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, 650201 China
| | - Le Wang
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, 650201 China
| | - Chun Lin
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, 650201 China
- Institute of the Improvement and Utilization of Characteristic Resource Plants, Yunnan Agricultural University, Kunming, 650201 China
| | - Zichao Mao
- College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, 650201 China
- Institute of the Improvement and Utilization of Characteristic Resource Plants, Yunnan Agricultural University, Kunming, 650201 China
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Han J, Wang X, Liu L, Li D, Suyaola S, Wang T, Baigude H. "Click" chemistry mediated construction of cationic curdlan nanocarriers for efficient gene delivery. Carbohydr Polym 2017; 163:191-198. [PMID: 28267496 DOI: 10.1016/j.carbpol.2017.01.055] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/01/2016] [Accepted: 01/15/2017] [Indexed: 01/22/2023]
Abstract
A cationic group has been quantitatively and selectively introduced into C6 position of each glucose units of Curdlan by "Click Chemistry" successfully. The resulting cationic Curdlan-Imidazole-lysine polymers (Cur-6-100Lys) exhibit excellent water solubility. Structure of the Cur-6-100Lys complexes was verified by FTIR and NMR spectroscopic measurements, and analysis of Cur-6-100Lys by GPC, DLS and SEM revealed that they have stoichiometric, nanosized spheroidal structures. Cytotoxicity measurement, electrophoretic mobility shift assay and EGFP-pDNA transfection have been carried out respectively. The results clearly show that Cur-6-100Lys nanocarriers have bound to dsDNA promptly, are less cytotoxic to both 7901 cells and HeLa cells, and are readily able to transport EGFP-pDNA into HepG2 cells. Our studies indicated that Cur-6-100Lys can potentially be used as a versatile nano platform for efficient gene delivery in living cells.
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Affiliation(s)
- Jingfen Han
- School of Chemistry & Chemical Engineering, Inner Mongolia University, 235 West College Road, Hohhot, Inner Mongolia 010020, PR China
| | - Xia Wang
- School of Chemistry & Chemical Engineering, Inner Mongolia University, 235 West College Road, Hohhot, Inner Mongolia 010020, PR China
| | - Lixia Liu
- School of Chemistry & Chemical Engineering, Inner Mongolia University, 235 West College Road, Hohhot, Inner Mongolia 010020, PR China
| | - Dongxue Li
- School of Chemistry & Chemical Engineering, Inner Mongolia University, 235 West College Road, Hohhot, Inner Mongolia 010020, PR China
| | - Suyaola Suyaola
- School of Chemistry & Chemical Engineering, Inner Mongolia University, 235 West College Road, Hohhot, Inner Mongolia 010020, PR China
| | - Tianyue Wang
- School of Chemistry & Chemical Engineering, Inner Mongolia University, 235 West College Road, Hohhot, Inner Mongolia 010020, PR China
| | - Huricha Baigude
- School of Chemistry & Chemical Engineering, Inner Mongolia University, 235 West College Road, Hohhot, Inner Mongolia 010020, PR China.
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Wang L, Li Y, Zhu L, Yin R, Wang R, Luo X, Li Y, Li Y, Chen Z. Antitumor activities and immunomodulatory of rice bran polysaccharides and its sulfates in vitro. Int J Biol Macromol 2016; 88:424-32. [PMID: 27064087 DOI: 10.1016/j.ijbiomac.2016.04.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/22/2016] [Accepted: 04/06/2016] [Indexed: 11/18/2022]
Abstract
Polysaccharides purified from rice bran show antitumor activity against tumor cells, yet the mechanism of this action remains poorly understood. To address this issue, our study evaluated the effect of rice bran polysaccharides on mouse melanoma cell line B16, and Raw264.7 macrophages. Rice bran polysaccharides (RBP) failed to inhibit B16 cell growth in vitro. However, Raw264.7 macrophages treated by RBP enhancement of cytotoxic effects. The cytotoxicity was confirmed by the stimulation of nitric oxide (NO) production and tumor necrosis factor-α (TNF-α) secretion on Raw264.7 macrophages in a dose-dependent manner. RBP2, a fraction of RBP, notably enhanced the inhibition of B16 cells and boosted the immunepotentiation effect compared with RBP. To further enhance the inhibition of B16 cell growth, sulfated polysaccharides (SRBP) was derived using the chlorosulfonic acid-pyridine method. SRBP2 was found to suppress B16 cell growth, reduce B16 cell survival and stimulate NO and TNF-α production. However, SRBP2 displayed a cytotoxic effect on Raw264.7 macrophages. These results suggest that the antitumor activity of RBP and RBP2 is mediated mainly through the activation of macrophages. SRBP2 exerts its antitumor activity by inducing apoptosis in tumor cells and the secretion of NO and TNF-α.
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Affiliation(s)
- Li Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, State Key Laboratory of Food Science and Technology, Collaborative Innovation Center for Food safety and quality control, Jiangsu province, National Engineering Laboratory for Cereal Fermentation Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122,Jiangsu, China.
| | - Yulin Li
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, 11 Cihu Road, Huangshi, 435002, China
| | - Lidan Zhu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, State Key Laboratory of Food Science and Technology, Collaborative Innovation Center for Food safety and quality control, Jiangsu province, National Engineering Laboratory for Cereal Fermentation Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122,Jiangsu, China
| | - Ran Yin
- Department of Food Science, College of Agriculture and Life Science, Cornell University, Ithaca, 14085, NY, United States
| | - Ren Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, State Key Laboratory of Food Science and Technology, Collaborative Innovation Center for Food safety and quality control, Jiangsu province, National Engineering Laboratory for Cereal Fermentation Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122,Jiangsu, China
| | - Xiaohu Luo
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, State Key Laboratory of Food Science and Technology, Collaborative Innovation Center for Food safety and quality control, Jiangsu province, National Engineering Laboratory for Cereal Fermentation Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122,Jiangsu, China
| | - Yongfu Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, State Key Laboratory of Food Science and Technology, Collaborative Innovation Center for Food safety and quality control, Jiangsu province, National Engineering Laboratory for Cereal Fermentation Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122,Jiangsu, China
| | - Yanan Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, State Key Laboratory of Food Science and Technology, Collaborative Innovation Center for Food safety and quality control, Jiangsu province, National Engineering Laboratory for Cereal Fermentation Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122,Jiangsu, China
| | - Zhengxing Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education, State Key Laboratory of Food Science and Technology, Collaborative Innovation Center for Food safety and quality control, Jiangsu province, National Engineering Laboratory for Cereal Fermentation Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122,Jiangsu, China
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Gracher AHP, Santana AG, Cipriani TR, Iacomini M. A procoagulant chemically sulfated mannan. Carbohydr Polym 2016; 136:177-86. [DOI: 10.1016/j.carbpol.2015.09.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 09/01/2015] [Accepted: 09/08/2015] [Indexed: 10/23/2022]
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Wu Y, Cai J, Han J, Baigude H. Cell Type-Specific Delivery of RNAi by Ligand-Functionalized Curdlan Nanoparticles: Balancing the Receptor Mediation and the Charge Motivation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21521-21528. [PMID: 26345600 DOI: 10.1021/acsami.5b06792] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Tissue-specific delivery of therapeutic RNAi has great potential for clinical applications. Receptor-mediated endocytosis plays a crucial role in targeted delivery of biotherapeutics including short interfering RNA (siRNA). Previously we reported a novel Curdlan-based nanoparticle for intracellular delivery of siRNA. Here we designed a nanoparticle based on ligand-functionalized Curdlan. Disaccharides were site-specifically conjugated to 6-deoxy-6-amino Curdlan, and the cell line specificity, cellular uptake, cytotoxicity, and siRNA delivery efficiency of the corresponding disaccharide-modified 6-deoxy-6-amino-Curdlan were investigated. Observation by fluorescence microscopy as well as flow cytometry showed that galactose-containing Curdlan derivatives delivered fluorescently labeled short nucleic acid to HepG2 cells expressing ASGPR receptor but not in other cells lacking surface ASGPR protein. Moreover, highly galactose-substituted Curdlan derivatives delivered siRNA specifically to ASGPR-expressing cells and induced RNAi activities, silencing endogenous GAPDH gene expression. Our data demonstrated that galactose-functionalized 6-deoxy-6-amino-Curdlan is a promising carrier for short therapeutic nucleic acids for clinical applications.
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Affiliation(s)
- Yinga Wu
- School of Chemistry & Chemical Engineering, Inner Mongolia University , 235 West College Road, Hohhot, Inner Mongolia 010020, P. R. China
| | - Jia Cai
- School of Chemistry & Chemical Engineering, Inner Mongolia University , 235 West College Road, Hohhot, Inner Mongolia 010020, P. R. China
| | - Jingfen Han
- School of Chemistry & Chemical Engineering, Inner Mongolia University , 235 West College Road, Hohhot, Inner Mongolia 010020, P. R. China
| | - Huricha Baigude
- School of Chemistry & Chemical Engineering, Inner Mongolia University , 235 West College Road, Hohhot, Inner Mongolia 010020, P. R. China
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Wang ZJ, Xie JH, Kan LJ, Wang JQ, Shen MY, Li WJ, Nie SP, Xie MY. Sulfated polysaccharides from Cyclocarya paliurus reduce H2O2-induced oxidative stress in RAW264.7 cells. Int J Biol Macromol 2015; 80:410-7. [PMID: 26111910 DOI: 10.1016/j.ijbiomac.2015.06.031] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 06/15/2015] [Accepted: 06/18/2015] [Indexed: 11/19/2022]
Abstract
In this study, two sulfated polysaccharides (S-CP1-4 and S-CP1-8) from Cyclocarya paliurus were produced by chlorosulfonic acid-pyridine method. Hydrogen peroxide (H2O2) was used to develop an oxidative stress model in the mouse macrophage cell line RAW264.7. Effects of the two sulfated polysaccharides on H2O2-induced oxidative stress were investigated. The results showed that S-CP(1-8) improved the viability of the H2O2-induced stressed RAW264.7 cells, as well as inhibited the lipid oxidation as determined by the level of malondialdehyde (MDA). Meanwhile, treatment with S-CP(1-4) increased superoxide dismutase (SOD) activity in these cells. The sulfated polysaccharides were found to have a better protective effect against H2O2-induced oxidative stress as compared to the native polysaccharide. Scanning electron microscopy also showed a significant change in the surface morphology of sulfated polysaccharides, but the degradation of main chain of polysaccharides was unconspicuous according to the results of monosaccharide composition. In addition, the sulfated polysaccharides had noticeable DPPH radical scavenging activity. In summary, our results demonstrated that H2O2 was able to induce oxidative stress in RAW264.7 cells, and sulfated group might play an important role in resistance to H2O2-induced oxidative damage.
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Affiliation(s)
- Zhi-Jun Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Jian-Hua Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Li-Jiao Kan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Jun-Qiao Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Ming-Yue Shen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Wen-Juan Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Shao-Ping Nie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Ming-Yong Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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Effective Immobilization of Agrobacterium sp. IFO 13140 Cells in Loofa Sponge for Curdlan Biosynthesis. Molecules 2015; 20:7957-73. [PMID: 25946555 PMCID: PMC6272340 DOI: 10.3390/molecules20057957] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 04/20/2015] [Accepted: 04/28/2015] [Indexed: 11/17/2022] Open
Abstract
Curdlan production by Agrobacterium sp. IFO13140 immobilized on loofa sponge, alginate and loofa sponge with alginate was investigated. There was no statistically-significant difference in curdlan production when the microorganism was immobilized in different matrices. The loofa sponge was chosen because of its practical application and economy and because it provides a high stability through its continued use. The best conditions for immobilization on loofa sponge were 50 mg of cell, 200 rpm and 72 h of incubation, which provided a curdlan production 1.50-times higher than that obtained by free cells. The higher volumetric productivity was achieved by immobilized cells (0.09 g/L/h) at 150 rpm. The operating stability was evaluated, and until the fourth cycle, immobilized cells retained 87.40% of the production of the first cycle. The immobilized cells remained active after 300 days of storage at 4 °C. The results of this study demonstrate success in immobilizing cells for curdlan biosynthesis, making the process potentially suitable for industrial scale-up. Additional studies may show a possible contribution to the reduction of operating costs.
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Chen C, Wu W, Xu X, Zhang L, Liu Y, Wang K. Chain conformation and anti-tumor activity of derivatives of polysaccharide from Rhizoma Panacis Japonici. Carbohydr Polym 2014; 105:308-16. [DOI: 10.1016/j.carbpol.2014.01.089] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Revised: 01/13/2014] [Accepted: 01/27/2014] [Indexed: 12/22/2022]
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25
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Liu Y, Liu Y, Jiang H, Xu L, Cheng Y, Wang PG, Wang F. Preparation, antiangiogenic and antitumoral activities of the chemically sulfated glucan from Phellinus ribis. Carbohydr Polym 2014; 106:42-8. [PMID: 24721049 DOI: 10.1016/j.carbpol.2014.01.088] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2013] [Revised: 01/25/2014] [Accepted: 01/27/2014] [Indexed: 10/25/2022]
Abstract
Two sulfated derivatives (PRP-S1 and PRP-S2) of a β-glucan from Phellinus ribis with different degrees of substitution were obtained by chlorosulfonic acid method. The derivatives could block formation of new vessels in zebrafish and inhibit the proliferation of human umbilical vein endothelial cells (HUVECs). The two sulfated derivatives had remarkably high antitumor activities in vivo (in BALB/c mice inoculated with H22 hepatocellular carcinoma) as well as in vitro (against human ovary cancer SKOV-3 cells), without producing any overt signs of general toxicity. The results of immunohistochemistry assay indicated that the derivatives significantly reduced the average number of microvessel density (MVD) and inhibited the expression of vascular endothelial growth factor (VEGF) in tumor. Thus, these derivatives exhibit pronounced antiangiogenic and antitumoral properties. Except for cytotoxic effects on tumor cells, it is reasonable to expect that the antitumoral effects of PRP-S1 and PRP-S2 are mediated via their antiangiogenic properties.
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Affiliation(s)
- Yuhong Liu
- Key Laboratory of Chemical Biology of Natural Products (Ministry of Education), Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China; School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; National Glycoengineering Research Center, Shandong University, Jinan 250012, China
| | - Yuguo Liu
- Department of Pharmacy, Shandong Tumor Hospital, Jinan 250117, China
| | - Haiqiang Jiang
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Lingchuan Xu
- School of Pharmaceutical Sciences, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Yanna Cheng
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Peng George Wang
- National Glycoengineering Research Center, Shandong University, Jinan 250012, China
| | - Fengshan Wang
- Key Laboratory of Chemical Biology of Natural Products (Ministry of Education), Institute of Biochemical and Biotechnological Drug, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China; National Glycoengineering Research Center, Shandong University, Jinan 250012, China.
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26
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Li P, Zhang X, Cheng Y, Li J, Xiao Y, Zhang Q, Zong A, Zhong C, Wang F. Preparation and in vitro immunomodulatory effect of curdlan sulfate. Carbohydr Polym 2014; 102:852-61. [DOI: 10.1016/j.carbpol.2013.10.078] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 10/21/2013] [Accepted: 10/23/2013] [Indexed: 10/26/2022]
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27
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Zhang X, Cao F, Sun Z, Yu W, Zhao L, Wang T. Sulfation of Agrocybe chaxingu polysaccharides can enhance the immune response in broiler chicks. J APPL POULTRY RES 2013. [DOI: 10.3382/japr.2012-00711] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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28
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Zhou CL, Liu W, Kong Q, Song Y, Ni YY, Li QH, O'Riordan D. Isolation, characterisation and sulphation of soluble polysaccharides isolated fromCucurbita maxima. Int J Food Sci Technol 2013. [DOI: 10.1111/ijfs.12330] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Chun-Li Zhou
- College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
- School of Life Science; Jiangxi Science &Technology Normal University; Nanchang 330013 China
- Key Laboratory of Fruit and Vegetable Processing; Ministry of Agriculture; Beijing 100083 China
- Research Center for Fruit and Vegetable Processing Engineering; Ministry of Education; Beijing 100083 China
| | - Wei Liu
- College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
- Key Laboratory of Fruit and Vegetable Processing; Ministry of Agriculture; Beijing 100083 China
- Research Center for Fruit and Vegetable Processing Engineering; Ministry of Education; Beijing 100083 China
| | - Qian Kong
- College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
- Key Laboratory of Fruit and Vegetable Processing; Ministry of Agriculture; Beijing 100083 China
- Research Center for Fruit and Vegetable Processing Engineering; Ministry of Education; Beijing 100083 China
| | - Yi Song
- College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
- Key Laboratory of Fruit and Vegetable Processing; Ministry of Agriculture; Beijing 100083 China
- Research Center for Fruit and Vegetable Processing Engineering; Ministry of Education; Beijing 100083 China
| | - Yuan-Ying Ni
- College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
- Key Laboratory of Fruit and Vegetable Processing; Ministry of Agriculture; Beijing 100083 China
- Research Center for Fruit and Vegetable Processing Engineering; Ministry of Education; Beijing 100083 China
| | - Quan-Hong Li
- College of Food Science and Nutritional Engineering; China Agricultural University; Beijing 100083 China
- Key Laboratory of Fruit and Vegetable Processing; Ministry of Agriculture; Beijing 100083 China
- Research Center for Fruit and Vegetable Processing Engineering; Ministry of Education; Beijing 100083 China
| | - Dolores O'Riordan
- UCD Institute of Food and Health; University College Dublin; Belfield Dublin 4 Ireland
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Phosphorylated curdlan microgels. Preparation, characterization, and in vitro drug release studies. Carbohydr Polym 2013; 94:889-98. [DOI: 10.1016/j.carbpol.2013.02.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 02/07/2013] [Accepted: 02/11/2013] [Indexed: 01/19/2023]
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Ichiyama K, Gopala Reddy SB, Zhang LF, Chin WX, Muschin T, Heinig L, Suzuki Y, Nanjundappa H, Yoshinaka Y, Ryo A, Nomura N, Ooi EE, Vasudevan SG, Yoshida T, Yamamoto N. Sulfated polysaccharide, curdlan sulfate, efficiently prevents entry/fusion and restricts antibody-dependent enhancement of dengue virus infection in vitro: a possible candidate for clinical application. PLoS Negl Trop Dis 2013; 7:e2188. [PMID: 23658845 PMCID: PMC3636050 DOI: 10.1371/journal.pntd.0002188] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 03/20/2013] [Indexed: 11/18/2022] Open
Abstract
Curdlan sulfate (CRDS), a sulfated 1→3-β-D glucan, previously shown to be a potent HIV entry inhibitor, is characterized in this study as a potent inhibitor of the Dengue virus (DENV). CRDS was identified by in silico blind docking studies to exhibit binding potential to the envelope (E) protein of the DENV. CRDS was shown to inhibit the DENV replication very efficiently in different cells in vitro. Minimal effective concentration of CRDS was as low as 0.1 µg/mL in LLC-MK2 cells, and toxicity was observed only at concentrations over 10 mg/mL. CRDS can also inhibit DENV-1, 3, and 4 efficiently. CRDS did not inhibit the replication of DENV subgenomic replicon. Time of addition experiments demonstrated that the compound not only inhibited viral infection at the host cell binding step, but also at an early post-attachment step of entry (membrane fusion). The direct binding of CRDS to DENV was suggested by an evident reduction in the viral titers after interaction of the virus with CRDS following an ultrafiltration device separation, as well as after virus adsorption to an alkyl CRDS-coated membrane filter. The electron microscopic features also showed that CRDS interacted directly with the viral envelope, and caused changes to the viral surface. CRDS also potently inhibited DENV infection in DC-SIGN expressing cells as well as the antibody-dependent enhancement of DENV-2 infection. Based on these data, a probable binding model of CRDS to DENV E protein was constructed by a flexible receptor and ligand docking study. The binding site of CRDS was predicted to be at the interface between domains II and III of E protein dimer, which is unique to this compound, and is apparently different from the β-OG binding site. Since CRDS has already been tested in humans without serious side effects, its clinical application can be considered. There is no specific approved antiviral and vaccine for treatment or prevention of dengue, an acute mosquito-transmitted viral disease that affects more than 50 million people each year. Dengue virus (DENV) entry is a critical step that establishes the infection and enables virus replication. Curdlan sulfate (CRDS) is known to inhibit the entry and propagation of HIV-1 in the laboratory. Here we applied a computational binding site identification strategy, which suggested that CRDS could be a probable entry inhibitor of the viral surface E protein. CRDS potently blocked DENV infection at an early stage of the virus lifecycle in vitro. In addition, CRDS prevented antibody dependent enhancement, which is considered to be one of the most important clinical observations in DENV-infected patients. CRDS shows a favorable selectivity index against all serotypes of DENV. Further computational docking indicates that the compound binds to a pocket on the DENV E protein. Since CRDS has already been tested in humans without serious side effects, it can be a good candidate for clinical application.
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Affiliation(s)
- Koji Ichiyama
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Human Sciences, Musashino University, Tokyo, Japan
| | - Sindhoora Bhargavi Gopala Reddy
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Biotechnology, Sri Jayachamarajendra College of Engineering, Mysore, Karnataka, India
| | - Li Feng Zhang
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Wei Xin Chin
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Tegshi Muschin
- Department of Bio and Environmental Chemistry, Kitami Institute of Technology, Kitami, Japan
| | - Lars Heinig
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Youichi Suzuki
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Haraprasad Nanjundappa
- Department of Biotechnology, Sri Jayachamarajendra College of Engineering, Mysore, Karnataka, India
| | - Yoshiyuki Yoshinaka
- Department of Molecular Virology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Akihide Ryo
- Department of Microbiology, Yokohama City University School of Medicine, Yokohama, Japan
| | - Nobuo Nomura
- Department of Human Sciences, Musashino University, Tokyo, Japan
| | - Eng Eong Ooi
- Program in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Subhash G. Vasudevan
- Program in Emerging Infectious Diseases, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Takashi Yoshida
- Department of Bio and Environmental Chemistry, Kitami Institute of Technology, Kitami, Japan
| | - Naoki Yamamoto
- Translational ID Lab, Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- * E-mail:
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Liu C, Chen H, Chen K, Gao Y, Gao S, Liu X, Li J. Sulfated modification can enhance antiviral activities of Achyranthes bidentata polysaccharide against porcine reproductive and respiratory syndrome virus (PRRSV) in vitro. Int J Biol Macromol 2013; 52:21-4. [DOI: 10.1016/j.ijbiomac.2012.09.020] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 09/10/2012] [Accepted: 09/25/2012] [Indexed: 11/15/2022]
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Jindal M, Rana V, Kumar V, Singh RS, Kennedy JF, Tiwary AK. Sulfation of Aegle marmelos gum: synthesis, physico-chemical and functional characterization. Carbohydr Polym 2012; 92:1660-8. [PMID: 23399204 DOI: 10.1016/j.carbpol.2012.11.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Revised: 11/05/2012] [Accepted: 11/09/2012] [Indexed: 11/30/2022]
Abstract
The present investigation was aimed at optimizing the conditions for preparing sulfated derivative of gum obtained from partially ripe fruits of Aegle marmelos. Elemental analysis, FTIR-ATR and NMR studies confirmed successful sulfation. The ratio of chlorosulfonic acid to pyridine exerted maximum influence on the degree of substitution followed by reaction temperature and reaction time. The sulfated derivative showed higher swelling in both acidic and alkaline pH as compared to unmodified gum. It also possessed higher negative zeta potential, higher viscosity, work of shear, firmness, consistency, cohesiveness and index of viscosity as compared to both unmodified gum as well as sodium alginate. Sulfated derivative was superior to unmodified gum and sodium alginate in terms of antimicrobial and anticoagulant activity. The sulfated sample appears to be a potential substitute over the unmodified gum sample and sodium alginate for modulating physicochemical properties of food and drug release dosage forms.
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Affiliation(s)
- Manish Jindal
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala 147002, Punjab, India
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33
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Ye L, Xu L, Li J. Preparation and anticoagulant activity of a fucosylated polysaccharide sulfate from a sea cucumber Acaudina molpadioidea. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.10.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Silion M, Dascalu A, Simionescu BC, Pinteala M, Ungurenasu C. Synthesis and anti-HIV activity of β-cyclodextrin-C6-sulfate/3-azido-3′-deoxythymidine inclusion complex. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24581] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Numata M, Shinkai S. 'Supramolecular wrapping chemistry' by helix-forming polysaccharides: a powerful strategy for generating diverse polymeric nano-architectures. Chem Commun (Camb) 2011; 47:1961-75. [PMID: 21246150 DOI: 10.1039/c0cc03133j] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We have exploited novel supramolecular wrapping techniques by helix-forming polysaccharides, β-1,3-glucans, which have strong tendency to form regular helical structures on versatile nanomaterials in an induced-fit manner. This approach is totally different from that using the conventional interpolymer interactions seen in both natural and synthetic polymeric architectures, and therefore has potential to create novel polymeric architectures with diverse and unexpected functionalities. The wrapping by β-1,3-glucans enforces the entrapped guest polymer to adopt helical or twisted conformations through the convergent interpolymer interactions. On the contrary, the wrapping by chemically modified semi-artificial β-1,3-glucans can bestow the divergent self-assembling abilities on the entrapped guest polymer to create hierarchical polymeric architectures, where the polymer/β-1,3-glucan composite acts as a huge one-dimensional building block. Based on the established wrapping strategy, we have further extended the wrapping techniques toward the creation of three-dimensional polymeric architectures, in which the polymer/β-1,3-glucan composite behaves as a sort of amphiphilic block copolymers. The present wrapping system would open several paths to accelerate the development of the polymeric supramolecular assembly systems, giving the strong stimuli to the frontier of polysaccharide-based functional chemistry.
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Affiliation(s)
- Munenori Numata
- Graduate School of Life and Environmental Science, Kyoto Prefectural University, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
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36
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Feng Y, Li W, Wu X, He L, Ma S. Rapid and efficient microwave-assisted sulfate modification of lentinan and its antioxidant and antiproliferative activities in vitro. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.05.025] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Kinoshita M, Kakoi N, Matsuno YK, Hayakawa T, Kakehi K. Determination of sulfate ester content in sulfated oligo- and poly-saccharides by capillary electrophoresis with indirect UV detection. Biomed Chromatogr 2010; 25:588-93. [DOI: 10.1002/bmc.1486] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Revised: 06/03/2010] [Accepted: 06/04/2010] [Indexed: 11/06/2022]
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Khandwekar AP, Patil DP, Shouche Y, Doble M. Surface Engineering of Polycaprolactone by Biomacromolecules and their Blood Compatibility. J Biomater Appl 2010; 26:227-52. [DOI: 10.1177/0885328210367442] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Improving blood compatibility of biodegradable polymers is an area of intensive research in blood contacting devices. In this study, curdlan sulphate and heparin-modified poly (caprolactone) (PCL) hybrids were developed by physically entrapping these molecules on the PCL surface. This modification technique was performed by reversible gelation of the PCL surface region following exposure to a solvent and nonsolvent mixture. The presence of these biomacromolecules on the PCL surface was verified by atomic force microscopy (AFM) and scanning electron microscopy and energy dispersive X-ray analysis (SEM-EDAX) analysis, while wettability of the films was investigated by dynamic contact angle measurements. The blood compatibilities of the surface-modified films were examined using in vitro platelet and leukocyte adhesion and thrombus formation. Mouse RAW 264.7 macrophage cells were used to assess the cell adhesion and inflammatory response to the modified surface by quantifying mRNA expression levels of proinflammatory cytokines namely TNF-α and IL-1β using real-time polymerase chain reaction (RT-PCR). A lower platelet and leukocyte adhesion and activation was observed on the modified films incubated with whole human blood for 2 h. The thrombus formation on the PCL was significantly decreased upon immobilization of both curdlan sulphate (39%, *p<0.05) and heparin (28%, *p<0.01) when compared to bare PCL (80%). All of these results revealed that improved blood compatibility was obtained by surface entrapment of both curdlan sulphate (CURS) and heparin (HEP) onto PCL films. Both PCL-CURS and PCL-HEP films reduced RAW 264.7 macrophage cell adhesion (*p<0.05) with respect to the base unmodified PCL. The cellular inflammatory response was suppressed on the modified substrates. The mRNA expression levels of proinflammmatory cytokines (TNF-α and IL-1β) were upregulated on bare PCL, while it was significantly lower on PCL-CURS and PCL-HEP substrates (**p<0.001). Thus, this biomacromolecule entrapment process can be applied on PCL in order to achieve improved blood compatibility and reduced inflammatory host response for its future blood contacting applications.
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Affiliation(s)
- Anand P. Khandwekar
- Department of Biotechnology, Indian Institute of Technology Madras Chennai 600036, India
| | - Deepak P. Patil
- National Center for Cell Science, Ganeshkhind, Pune 411007, India
| | - Yogesh Shouche
- National Center for Cell Science, Ganeshkhind, Pune 411007, India
| | - Mukesh Doble
- Department of Biotechnology, Indian Institute of Technology Madras Chennai 600036, India,
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CAO XIAOHONG, YANG QINGWEI, LU MEIFANG, HOU LIHUA, JIN YUYAN, YUAN JING, WANG CHUNLING. PREPARATION AND ANTICOAGULATION ACTIVITY OF A CHEMICALLY SULFATED POLYSACCHARIDE (S-GFB) OBTAINED FROM GRIFOLA FRONDOSA. J Food Biochem 2010. [DOI: 10.1111/j.1745-4514.2010.00348.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Wong SS, Ngiam ZRJ, Kasapis S, Huang D. Novel sulfation of curdlan assisted by ultrasonication. Int J Biol Macromol 2010; 46:385-8. [DOI: 10.1016/j.ijbiomac.2009.12.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2009] [Revised: 12/17/2009] [Accepted: 12/23/2009] [Indexed: 11/15/2022]
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41
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Creation of unique supramolecular nanoarchitectures utilizing natural polysaccharide as a one-dimensional host. J INCL PHENOM MACRO 2010. [DOI: 10.1007/s10847-010-9754-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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42
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Zhang Y, Lu X, Zhang Y, Qin L, Zhang J. Sulfated modification and immunomodulatory activity of water-soluble polysaccharides derived from fresh Chinese persimmon fruit. Int J Biol Macromol 2010; 46:67-71. [DOI: 10.1016/j.ijbiomac.2009.10.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 09/18/2009] [Accepted: 10/06/2009] [Indexed: 11/15/2022]
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43
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Rudd TR, Uniewicz KA, Ori A, Guimond SE, Skidmore MA, Gaudesi D, Xu R, Turnbull JE, Guerrini M, Torri G, Siligardi G, Wilkinson MC, Fernig DG, Yates EA. Comparable stabilisation, structural changes and activities can be induced in FGF by a variety of HS and non-GAG analogues: implications for sequence-activity relationships. Org Biomol Chem 2010; 8:5390-7. [DOI: 10.1039/c0ob00246a] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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44
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Wang J, Zhang L, Yu Y, Cheung PCK. Enhancement of antitumor activities in sulfated and carboxymethylated polysaccharides of Ganoderma lucidum. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:10565-10572. [PMID: 19863048 DOI: 10.1021/jf902597w] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Two water-soluble derivatives, sulfated and carboxymethylated Ganoderma lucidem polysaccharides, coded as S-GL and CM-GL, were prepared using derivatization of water-insoluble polysaccharides (GL-IV-I) extracted from the fruit body of G. lucidem . The degree of substitution (DS) of S-GL and CM-GL was 0.94 and 1.09, respectively. The weight-average molecular mass (Mw) of GL-IV-I, S-GL, and CM-GL was determined with light scattering to be 13.3x10(4), 10.1x10(4), and 6.3x10(4), respectively. S-GL and CM-GL inhibited the in vitro proliferation of Sarcoma 180 (S-180) tumor cells in a dose-dependent manner, with an IC50 value of 26 and 38 microg/mL, respectively. They also inhibited the growth of S-180 solid tumors implanted in BALB/c mice, with low toxicity to the animals. Flow cytometric studies revealed that treatment of S-GL and CM-GL with S-180 tumor cells could mediate the cell-cycle arrest in the G2/M phase. The expression of Bax increased, and the expression of Bcl-2 decreased dramatically, as shown by immuno-histochemical staining of S-180 tumor tissue excised from the animals. The sulfated and carboxmethylated groups in the polysaccharides played an important part in enhancing their antitumor activities, leading to the potential to be developed into antitumor drugs.
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Affiliation(s)
- Jianguo Wang
- Department of Chemistry, Wuhan University, Wuhan 430072, People's Republic of China
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45
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Wang X, Zhang L. Physicochemical properties and antitumor activities for sulfated derivatives of lentinan. Carbohydr Res 2009; 344:2209-16. [PMID: 19733344 DOI: 10.1016/j.carres.2009.04.033] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2009] [Revised: 04/21/2009] [Accepted: 04/22/2009] [Indexed: 10/20/2022]
Abstract
Five fractions of lentinan, a beta-(1-->3)-D-glucan bearing beta-(1-->6)-d-glucopyranosyl branches, were treated with chlorosulfonic acid for 90 min at 60 degrees C in pyridine medium to synthesize water-soluble sulfated derivatives having the substitution degree of 1.44-1.76. The (13)C NMR spectra of the sulfated beta-glucans indicated that the C-6 position was preferentially substituted by the sulfate groups. The values of the weight-average molecular weight (M(w)), radius of gyration (s(2)(z)(1/2)), and intrinsic viscosity ([eta]) of the sulfated lentinan fractions were determined by size-exclusion chromatography with multi-angle laser light scattering (SEC-MALLS) and viscometry in 0.15 M aq NaCl at 25 degrees C, respectively. The dependence of [eta] on M(w) for the sulfated lentinan was found to be [eta]=8.93 x 10(-3)M(w)(0.73+/-0.02) (mL/g) in 0.15 M aq NaCl (for M(w) ranging from 14.6 x 10(4) to 50.4 x 10(4)). On the basis of the Yamakawa-Fujii-Yoshizaki (YFY) theory, the conformational parameters of the sulfated lentinan were calculated as 950 nm(-1) for the molar mass per unit contour length (M(L)), 4.8 nm for the persistence length (q), and 13.9 for the characteristic ratio (C(infinity)), indicating relatively extended single flexible chains in solution. The sulfated glucan fractions exhibited in vitro antiproliferative activities against sarcoma 180 (S-180) cells, and their inhibition ratios were lower than that of the triple-helix lentinan, but higher than that for the one with single random-coil lentinan chains.
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Affiliation(s)
- Xiaohua Wang
- Department of Chemistry, Wuhan University, Wuhan 430072, China
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46
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Ye L, Zhang J, Zhou S, Wang S, Wu D, Pan Y. Preparation of a novel sulfated glycopeptide complex and inhibiting L1210 cell lines property in vitro. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2008.12.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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47
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Liu Y, Liu C, Tan H, Zhao T, Cao J, Wang F. Sulfation of a polysaccharide obtained from Phellinus ribis and potential biological activities of the sulfated derivatives. Carbohydr Polym 2009. [DOI: 10.1016/j.carbpol.2009.01.008] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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48
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Wang L, Li X, Chen Z. Sulfated modification of the polysaccharides obtained from defatted rice bran and their antitumor activities. Int J Biol Macromol 2009; 44:211-4. [DOI: 10.1016/j.ijbiomac.2008.12.006] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Revised: 12/07/2008] [Accepted: 12/10/2008] [Indexed: 10/21/2022]
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49
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Sun Y, Liang H, Cai G, Guan S, Tong H, Yang X, Liu J. Sulfated modification of the water-soluble polysaccharides from Polyporus albicans mycelia and its potential biological activities. Int J Biol Macromol 2009; 44:14-7. [DOI: 10.1016/j.ijbiomac.2008.09.010] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2008] [Revised: 09/16/2008] [Accepted: 09/18/2008] [Indexed: 11/25/2022]
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50
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Structure and chain conformation of five water-soluble derivatives of a β-d-glucan isolated from Ganoderma lucidum. Carbohydr Res 2009; 344:105-12. [DOI: 10.1016/j.carres.2008.09.024] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Revised: 09/10/2008] [Accepted: 09/22/2008] [Indexed: 11/19/2022]
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