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Antithrombotics from the Sea: Polysaccharides and Beyond. Mar Drugs 2019; 17:md17030170. [PMID: 30884850 PMCID: PMC6471875 DOI: 10.3390/md17030170] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/01/2019] [Accepted: 03/13/2019] [Indexed: 12/21/2022] Open
Abstract
Marine organisms exhibit some advantages as a renewable source of potential drugs, far beyond chemotherapics. Particularly, the number of marine natural products with antithrombotic activity has increased in the last few years, and reports show a wide diversity in scaffolds, beyond the polysaccharide framework. While there are several reviews highlighting the anticoagulant and antithrombotic activities of marine-derived sulfated polysaccharides, reports including other molecules are sparse. Therefore, the present paper provides an update of the recent progress in marine-derived sulfated polysaccharides and quotes other scaffolds that are being considered for investigation due to their antithrombotic effect.
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252
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Catarino MD, Silva AMS, Mateus N, Cardoso SM. Optimization of Phlorotannins Extraction from Fucus vesiculosus and Evaluation of Their Potential to Prevent Metabolic Disorders. Mar Drugs 2019; 17:E162. [PMID: 30857204 PMCID: PMC6471631 DOI: 10.3390/md17030162] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/20/2019] [Accepted: 03/04/2019] [Indexed: 02/07/2023] Open
Abstract
Phlorotannins are phloroglucinol-based phenolic compounds, occurring particularly in brown macroalgae, that have been recognized for their promising bioactive properties. In this study, the extraction of phlorotannins from Fucus vesiculosus was evaluated with particular emphasis on the influential parameters, including the solvent concentration, solvent-solid ratio, extraction temperature and extraction time, using a single-factor design followed by a Box-Behnken design. The maximum total phlorotannin content, determined using the 2,4-dimethoxybenzaldehyde (DMBA) method, corresponded to 2.92 ± 0.05 mg of phloroglucinol equivalents/g dry seaweed (mg PGE/g DS), and was achieved for extracts carried out with acetone 67% (v/v), a solvent-solid ratio of 70 mL/g and temperature at 25 °C. This crude extract, together with a semi-purified phlorotannin fraction, were further evaluated for their anti-enzymatic capacity against α-glucosidase, α-amylase and pancreatic lipase, both showing promising inhibitory effects, particularly against α-glucosidase for which a greater inhibitory effect was observed compared to the pharmaceutical drug acarbose (IC50 = 4.5 ± 0.8 and 0.82 ± 0.3 μg/mL, respectively, against 206.6 ± 25.1 μg/mL). Additionally, the ultra-high-pressure liquid chromatography coupled to mass spectrometry (UHPLC-MS) analysis carried out on the ethyl acetate fraction revealed the presence of fucols, fucophlorethols, fuhalols and several other phlorotannin derivatives. Moreover, possible new phlorotannin compounds, including fucofurodiphlorethol, fucofurotriphlorethol and fucofuropentaphlorethol, have been tentatively identified in this extract. Overall, this study provides evidence that F. vesiculosus phlorotannin-rich extracts hold potential for the management of the activity of α-glucosidase, α-amylase and pancreatic lipase, which are well known to be linked to metabolic disorders such as diabetes and obesity.
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Affiliation(s)
- Marcelo D Catarino
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Artur M S Silva
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Nuno Mateus
- REQUIMTE/LAQV, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal.
| | - Susana M Cardoso
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal.
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253
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Usoltseva RV, Anastyuk SD, Surits VV, Shevchenko NM, Thinh PD, Zadorozhny PA, Ermakova SP. Comparison of structure and in vitro anticancer activity of native and modified fucoidans from Sargassum feldmannii and S. duplicatum. Int J Biol Macromol 2019; 124:220-228. [PMID: 30496854 DOI: 10.1016/j.ijbiomac.2018.11.223] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/22/2018] [Accepted: 11/25/2018] [Indexed: 10/27/2022]
Abstract
Fucoidans are valuable biologically active polysaccharides of brown algae. The aim of this study was to investigate the structure of fucoidan from Sargassum feldmannii and the anticancer effects of native and modified polysaccharides from S. feldmannii and S. duplicatum. The structure of sulfated (25.3%) galactofucan SfF2 (Fuc/Gal = 72/28 mol%) from S. feldmannii was investigated by NMR spectroscopy of desulfated derivative and mass spectrometry of fucoidan fragments labelled with 18O. SfF2 was shown to contain the main chain from 1,3-linked α-l-fucopyranose and β-d-galactopyranose residues with fucose branches at C4 and C6 of galactose residues and C2 of fucose residues. The following fragments were also identified in SfF2: Fuc-(1,4)-Fuc, Gal-(1,3)-Gal, and Gal-(1,4)-Gal. The sulfate groups occupied positions C2, C3, and C4 of fucose residues and C2, C3, C4, and C6 of galactose residues. The galactofucans from S. feldmannii, S. duplicatum, and their derivatives exhibited no cytotoxicity in vitro. The native and deacetylated fucoidans (200 μg/mL) inhibited colony formation of human colon cancer cells (DLD-1, HT-29, and HCT-116). Both desulfated fucoidans possessed weak anticancer activity.
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Affiliation(s)
- Roza V Usoltseva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159, prosp. 100 Let Vladivostoku, 690022 Vladivostok, Russian Federation.
| | - Stanislav D Anastyuk
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159, prosp. 100 Let Vladivostoku, 690022 Vladivostok, Russian Federation.
| | - Valeriy V Surits
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159, prosp. 100 Let Vladivostoku, 690022 Vladivostok, Russian Federation
| | - Natalia M Shevchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159, prosp. 100 Let Vladivostoku, 690022 Vladivostok, Russian Federation.
| | - Pham Duc Thinh
- Nhatrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, 02 Hung Vuong Street, Nhatrang, Viet Nam
| | - Pavel A Zadorozhny
- Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159D, 100 Let Vladivostoku prosp., 690022 Vladivostok, Russian Federation
| | - Svetlana P Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159, prosp. 100 Let Vladivostoku, 690022 Vladivostok, Russian Federation
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254
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Dutot M, Grassin-Delyle S, Salvator H, Brollo M, Rat P, Fagon R, Naline E, Devillier P. A marine-sourced fucoidan solution inhibits Toll-like-receptor-3-induced cytokine release by human bronchial epithelial cells. Int J Biol Macromol 2019; 130:429-436. [PMID: 30797011 PMCID: PMC7112488 DOI: 10.1016/j.ijbiomac.2019.02.113] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/08/2019] [Accepted: 02/19/2019] [Indexed: 12/28/2022]
Abstract
Fucoidans are sulfated polysaccharides from brown algae, known to have immunomodulatory activity. Their effects on the response of airway epithelial cells to Toll-like receptor 3 (TLR3) stimulation have not been characterized. Our objective was to evaluate the effects of a marine-sourced fucoidan solution (MFS) on the TLR3-induced expression and/or production of cytokines and prostaglandin by human primary bronchial epithelial cells as a model of the airway epithelium. The cells were incubated with MFS in the presence or absence of Poly(I:C) (a TLR3 agonist that mimics viral RNA). Cytokine expression and production were assessed using RT-qPCR and ELISA. The expression of cyclooxygenase-2 and the production of prostaglandin E2 were also measured. Relative to control, exposure to MFS was associated with lower Poly(I:C)-induced mRNA expression of various cytokines and chemokines, and lower COX-2 production. The MFS inhibited the production of some cytokines (IL-1α, IL-1β, TNFα, and IL-6), chemokines (CCL5, CCL22, CXCL1, CXCL5 and CXCL8) and prostaglandin E2 but did not alter the production of IL-12/25, CCL2 and CCL20. At clinically relevant concentrations, the MFS inhibited the TLR3-mediated production of inflammatory mediators by human primary bronchial epithelial cells - suggesting that locally applied MFS might help to reduce airway inflammation in viral infections.
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Affiliation(s)
- M Dutot
- Yslab, F-29000 Quimper, France; CNRS UMR 8038, Laboratoire de Chimie-Toxicologie Analytique et Cellulaire, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Pharmacie de Paris, F-75006 Paris, France.
| | - S Grassin-Delyle
- INSERM UMR 1173 et Plateforme de spectrométrie de masse MasSpecLab, UFR des Sciences de la Santé Simone Veil, Université Versailles Saint Quentin, Université Paris Saclay, Montigny-le-Bretonneux, France; Département des Maladies Respiratoires, Hôpital Foch, F-92150 Suresnes, France
| | - H Salvator
- Département des Maladies Respiratoires, Hôpital Foch, F-92150 Suresnes, France; Laboratoire de Pharmacologie Respiratoire, UPRES EA 220, UFR Sciences de la Santé Simone Veil, Université Versailles Saint Quentin en Yvelines, Université Paris-Saclay, F-92150 Suresnes, France
| | - M Brollo
- Département des Maladies Respiratoires, Hôpital Foch, F-92150 Suresnes, France
| | - P Rat
- CNRS UMR 8038, Laboratoire de Chimie-Toxicologie Analytique et Cellulaire, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Pharmacie de Paris, F-75006 Paris, France
| | - R Fagon
- Yslab, F-29000 Quimper, France
| | - E Naline
- Département des Maladies Respiratoires, Hôpital Foch, F-92150 Suresnes, France; Laboratoire de Pharmacologie Respiratoire, UPRES EA 220, UFR Sciences de la Santé Simone Veil, Université Versailles Saint Quentin en Yvelines, Université Paris-Saclay, F-92150 Suresnes, France
| | - P Devillier
- Département des Maladies Respiratoires, Hôpital Foch, F-92150 Suresnes, France; Laboratoire de Pharmacologie Respiratoire, UPRES EA 220, UFR Sciences de la Santé Simone Veil, Université Versailles Saint Quentin en Yvelines, Université Paris-Saclay, F-92150 Suresnes, France
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255
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Lahrsen E, Schoenfeld AK, Alban S. Degradation of Eight Sulfated Polysaccharides Extracted from Red and Brown Algae and Its Impact on Structure and Pharmacological Activities. ACS Biomater Sci Eng 2019; 5:1200-1214. [PMID: 33405640 DOI: 10.1021/acsbiomaterials.8b01113] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Degradation represents a strategy to improve the biopharmaceutical properties of native algae sulfated polysaccharides (SP) with high Mw. The aim of this study was to compare the degradability of four sulfated xylogalactans (SXG) and four fucose-rich sulfated polysaccharides (FRSP) extracted from red and brown algae, respectively, using three simple methods causing no desulfation as well as to examine the chemical and pharmacological changes of the resulting fractions. The achieved degradation proved to be dependent on the basic glycan structure of the SP. Treatment with hydrogen peroxide (3%, 4 h, 50 °C) led to the most efficient degradation of both FRSP and SXG. The Mw decrease was associated with distinct reduction of the activities (complement inhibition (>) elastase inhibition > C1-INH potentiation) and resulted in a modified pharmacological profile. Despite their much lower degree of sulfation, some of the fractions with Mw < 15 kDa exhibited similar or even stronger activities than heparins, whereas they had only weak anticoagulant effects.
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Affiliation(s)
- Eric Lahrsen
- Pharmaceutical Institute, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany
| | | | - Susanne Alban
- Pharmaceutical Institute, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany
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256
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van Vliet DM, Palakawong Na Ayudthaya S, Diop S, Villanueva L, Stams AJM, Sánchez-Andrea I. Anaerobic Degradation of Sulfated Polysaccharides by Two Novel Kiritimatiellales Strains Isolated From Black Sea Sediment. Front Microbiol 2019; 10:253. [PMID: 30833937 PMCID: PMC6388578 DOI: 10.3389/fmicb.2019.00253] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 01/30/2019] [Indexed: 12/04/2022] Open
Abstract
The marine environment contains a large diversity of sulfated polysaccharides and other glycopolymers. Saccharolytic microorganisms degrade these compounds through hydrolysis, which includes the hydrolysis of sulfate groups from sugars by sulfatases. Various marine bacteria of the Planctomycetes-Verrucomicrobia-Chlamydia (PVC) superphylum have exceptionally high numbers of sulfatase genes associated with the degradation of sulfated polysaccharides. However, thus far no sulfatase-rich marine anaerobes are known. In this study, we aimed to isolate marine anaerobes using sulfated polysaccharides as substrate. Anoxic enrichment cultures were set up with a mineral brackish marine medium, inoculated with anoxic Black Sea sediment sampled at 2,100 m water depth water and incubated at 15°C (in situ T = 8°C) for several weeks. Community analysis by 16S rRNA gene amplicon sequencing revealed the enrichment of Kiritimatiellaeota clade R76-B128 bacteria in the enrichments with the sulfated polysaccharides fucoidan and iota-carrageenan as substrate. We isolated two strains, F1 and F21, which represent a novel family within the order of the Kiritimatiellales. They were capable of growth on various mono-, di-, and polysaccharides, including fucoidan. The desulfation of iota-carrageenan by strain F21 was confirmed quantitatively by an increase in free sulfate concentration. Strains F1 and F21 represent the first marine sulfatase-rich anaerobes, encoding more sulfatases (521 and 480, 8.0 and 8.4% of all coding sequences, respectively) than any other microorganism currently known. Specific encoded sulfatase subfamilies could be involved in desulfating fucoidan (S1_15, S1_17 and S1_25) and iota-carrageenan (S1_19). Strains F1 and F21 had a sulfatase gene classification profile more similar to aerobic than anaerobic sulfatase-rich PVC bacteria, including Kiritimatiella glycovorans, the only other cultured representative within the Kiritimatiellaeota. Both strains encoded a single anaerobic sulfatase-maturating enzyme which could be responsible for post-translational modification of formylglycine-dependent sulfatases. Strains F1 and F21 are potential anaerobic platforms for future studies on sulfatases and their maturation enzymes.
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Affiliation(s)
- Daan M. van Vliet
- Laboratory of Microbiology, Wageningen University, Wageningen, Netherlands
| | - Susakul Palakawong Na Ayudthaya
- Laboratory of Microbiology, Wageningen University, Wageningen, Netherlands
- Thailand Institute of Scientific and Technological Research, Pathum Thani, Thailand
| | - Sally Diop
- Laboratory of Microbiology, Wageningen University, Wageningen, Netherlands
| | - Laura Villanueva
- Department of Marine Microbiology and Biogeochemistry, Royal Netherlands Institute for Sea Research (NIOZ) and Utrecht University, Den Burg, Netherlands
| | - Alfons J. M. Stams
- Laboratory of Microbiology, Wageningen University, Wageningen, Netherlands
- Centre of Biological Engineering, University of Minho, Braga, Portugal
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257
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Purbomarto C, Isnansetyo A, . M, . T. Dietary Fucoidan from Padina boergesenii to Enhance Non-specific Immune of Catfish (Clarias sp.). ACTA ACUST UNITED AC 2019. [DOI: 10.3923/jbs.2019.173.180] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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258
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Kardeby C, Fälker K, Haining EJ, Criel M, Lindkvist M, Barroso R, Påhlsson P, Ljungberg LU, Tengdelius M, Rainger GE, Watson S, Eble JA, Hoylaerts MF, Emsley J, Konradsson P, Watson SP, Sun Y, Grenegård M. Synthetic glycopolymers and natural fucoidans cause human platelet aggregation via PEAR1 and GPIbα. Blood Adv 2019; 3:275-287. [PMID: 30700416 PMCID: PMC6373755 DOI: 10.1182/bloodadvances.2018024950] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 12/27/2018] [Indexed: 12/14/2022] Open
Abstract
Fucoidans are sulfated fucose-based polysaccharides that activate platelets and have pro- and anticoagulant effects; thus, they may have therapeutic value. In the present study, we show that 2 synthetic sulfated α-l-fucoside-pendant glycopolymers (with average monomeric units of 13 and 329) and natural fucoidans activate human platelets through a Src- and phosphatidylinositol 3-kinase (PI3K)-dependent and Syk-independent signaling cascade downstream of the platelet endothelial aggregation receptor 1 (PEAR1). Synthetic glycopolymers and natural fucoidan stimulate marked phosphorylation of PEAR1 and Akt, but not Syk. Platelet aggregation and Akt phosphorylation induced by natural fucoidan and synthetic glycopolymers are blocked by a monoclonal antibody to PEAR1. Direct binding of sulfated glycopolymers to epidermal like growth factor (EGF)-like repeat 13 of PEAR1 was shown by avidity-based extracellular protein interaction screen technology. In contrast, synthetic glycopolymers and natural fucoidans activate mouse platelets through a Src- and Syk-dependent pathway regulated by C-type lectin-like receptor 2 (CLEC-2) with only a minor role for PEAR1. Mouse platelets lacking the extracellular domain of GPIbα and human platelets treated with GPIbα-blocking antibodies display a reduced aggregation response to synthetic glycopolymers. We found that synthetic sulfated glycopolymers bind directly to GPIbα, substantiating that GPIbα facilitates the interaction of synthetic glycopolymers with CLEC-2 or PEAR1. Our results establish PEAR1 as the major signaling receptor for natural fucose-based polysaccharides and synthetic glycopolymers in human, but not in mouse, platelets. Sulfated α-l-fucoside-pendant glycopolymers are unique tools for further investigation of the physiological role of PEAR1 in platelets and beyond.
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Affiliation(s)
- Caroline Kardeby
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Knut Fälker
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Elizabeth J Haining
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Maarten Criel
- Center for Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Madelene Lindkvist
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Ruben Barroso
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Centre of Membrane Proteins and Receptors, Universities of Birmingham and Nottingham, The Midlands, United Kingdom
| | - Peter Påhlsson
- Division of Cell Biology, Department of Clinical and Experimental Medicine, and
| | - Liza U Ljungberg
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
| | | | - G Ed Rainger
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Stephanie Watson
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Johannes A Eble
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, Münster, Germany; and
| | - Marc F Hoylaerts
- Center for Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium
| | - Jonas Emsley
- Centre of Membrane Proteins and Receptors, Universities of Birmingham and Nottingham, The Midlands, United Kingdom
- Division of Biomolecular Science and Medicinal Chemistry, Centre for Biomolecular Sciences, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Peter Konradsson
- Division of Organic Chemistry, Linköping University, Linköping, Sweden
| | - Steve P Watson
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Centre of Membrane Proteins and Receptors, Universities of Birmingham and Nottingham, The Midlands, United Kingdom
| | - Yi Sun
- Institute of Cardiovascular Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
- Centre of Membrane Proteins and Receptors, Universities of Birmingham and Nottingham, The Midlands, United Kingdom
| | - Magnus Grenegård
- Cardiovascular Research Centre, School of Medical Sciences, Örebro University, Örebro, Sweden
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259
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Microbial Organic Matter Degradation Potential in Baltic Sea Sediments Is Influenced by Depositional Conditions and In Situ Geochemistry. Appl Environ Microbiol 2019; 85:AEM.02164-18. [PMID: 30504213 PMCID: PMC6365825 DOI: 10.1128/aem.02164-18] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/17/2018] [Indexed: 11/23/2022] Open
Abstract
Sediments sequester organic matter over geologic time scales and impact global climate regulation. Microbial communities in marine sediments drive organic matter degradation, but the factors controlling their assemblages and activities, which in turn impact their role in organic matter degradation, are not well understood. Hence, determining the role of microbial communities in carbon cycling in various sediment types is necessary for predicting future sediment carbon cycling. We examined microbial communities in Baltic Sea sediments, which were deposited across various climatic and geographical regimes to determine the relationship between microbial potential for breakdown of organic matter and abiotic factors, including geochemistry and sediment lithology. The findings from this study will contribute to our understanding of carbon cycling in the deep biosphere and how microbial communities live in deeply buried environments. Globally, marine sediments are a vast repository of organic matter, which is degraded through various microbial pathways, including polymer hydrolysis and monomer fermentation. The sources, abundances, and quality (i.e., labile or recalcitrant) of the organic matter and the composition of the microbial assemblages vary between sediments. Here, we examine new and previously published sediment metagenomes from the Baltic Sea and the nearby Kattegat region to determine connections between geochemistry and the community potential to degrade organic carbon. Diverse organic matter hydrolysis encoding genes were present in sediments between 0.25 and 67 meters below seafloor and were in higher relative abundances in those sediments that contained more organic matter. New analysis of previously published metatranscriptomes demonstrated that many of these genes were transcribed in two organic-rich Holocene sediments. Some of the variation in deduced pathways in the metagenomes correlated with carbon content and depositional conditions. Fermentation-related genes were found in all samples and encoded multiple fermentation pathways. Notably, genes involved in alcohol metabolism were amongst the most abundant of these genes, indicating that this is an important but underappreciated aspect of sediment carbon cycling. This study is a step towards a more complete understanding of microbial food webs and the impacts of depositional facies on present sedimentary microbial communities. IMPORTANCE Sediments sequester organic matter over geologic time scales and impact global climate regulation. Microbial communities in marine sediments drive organic matter degradation, but the factors controlling their assemblages and activities, which in turn impact their role in organic matter degradation, are not well understood. Hence, determining the role of microbial communities in carbon cycling in various sediment types is necessary for predicting future sediment carbon cycling. We examined microbial communities in Baltic Sea sediments, which were deposited across various climatic and geographical regimes to determine the relationship between microbial potential for breakdown of organic matter and abiotic factors, including geochemistry and sediment lithology. The findings from this study will contribute to our understanding of carbon cycling in the deep biosphere and how microbial communities live in deeply buried environments.
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260
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Chu Q, Chen M, Song D, Li X, Yang Y, Zheng Z, Li Y, Liu Y, Yu L, Hua Z, Zheng X. Apios americana Medik flowers polysaccharide (AFP-2) attenuates H2O2 induced neurotoxicity in PC12 cells. Int J Biol Macromol 2019; 123:1115-1124. [DOI: 10.1016/j.ijbiomac.2018.11.078] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/14/2018] [Accepted: 11/12/2018] [Indexed: 12/20/2022]
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261
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Lim SJ, Wan Aida WM, Schiehser S, Rosenau T, Böhmdorfer S. Structural elucidation of fucoidan from Cladosiphon okamuranus (Okinawa mozuku). Food Chem 2019; 272:222-226. [PMID: 30309536 DOI: 10.1016/j.foodchem.2018.08.034] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 07/26/2018] [Accepted: 08/08/2018] [Indexed: 10/28/2022]
Abstract
Fucoidan is a sulphated polysaccharide, made up mainly of l-fucose, which is found in brown seaweeds. Its chemical structure is diverse and depends on maturity, species and geographical location. The objective of this study was to elucidate the chemical structure of fucoidan from Cladosiphon okamuranus harvested in Japan. The fucoidan was subject to purification prior to monosaccharide profiling, sulphate content determination, and linkage analysis. Our results showed that Japanese Cladosiphon okamuranus fucoidan contained 70.13 ± 0.22 wt% fucose and 15.16 ± 1.17 wt% sulphate. Other minor monosaccharides found were d-xylose, d-galactose, d-mannose, d-glucose, d-arabinose, d-rhamnose and d-glucuronic acid. Linkage analysis revealed that fucopyranoside units along the backbone are linked, through α-1,3-glycosidic bonds, with fucose branching at C-2, and one sulphate group at C-4 per every three fucose units, i.e. the structure of fucoidan from Japanese Cladosiphon okamuranus is [→3)-α-fuc(1→]0.52[→3)-α-fuc-4-OSO3-(1→]0.33[→2)-α-fuc]0.14.
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Affiliation(s)
- Seng Joe Lim
- Centre for Biotechnology and Functional Food, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia.
| | - Wan Mustapha Wan Aida
- Centre for Biotechnology and Functional Food, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia.
| | - Sonja Schiehser
- University of Natural Resources and Life Sciences, Vienna, Department of Chemistry, Division of Chemistry of Renewable Resources, Muthgasse 18, A-1190 Vienna, Austria.
| | - Thomas Rosenau
- University of Natural Resources and Life Sciences, Vienna, Department of Chemistry, Division of Chemistry of Renewable Resources, Muthgasse 18, A-1190 Vienna, Austria.
| | - Stefan Böhmdorfer
- University of Natural Resources and Life Sciences, Vienna, Department of Chemistry, Division of Chemistry of Renewable Resources, Muthgasse 18, A-1190 Vienna, Austria.
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262
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Jacobsen C, Sørensen ADM, Holdt SL, Akoh CC, Hermund DB. Source, Extraction, Characterization, and Applications of Novel Antioxidants from Seaweed. Annu Rev Food Sci Technol 2019; 10:541-568. [PMID: 30673506 DOI: 10.1146/annurev-food-032818-121401] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Driven by a general demand for clean labels on food and cosmetic products, these industries are currently searching for efficient natural antioxidants to replace synthetic antioxidants. Seaweed contains several compounds with antioxidative properties (phlorotannins, pigments, tocopherols, and polysaccharides). It is possible to extract these compounds via different extraction techniques, which are discussed in this review. Among the abovementioned compounds, phlorotannins are probably the most important in terms of the antioxidative potential of seaweed extracts. We review how the different antioxidative compounds can be characterized. We discuss the current knowledge of the relationship between phlorotannin's structure and antioxidant properties in in vitro studies as well as in food systems. Concerning food systems, most studies on the antioxidative effect of seaweed extracts have been performed with extracts prepared from Fucus vesiculosus, despite the fact that this species is less available than other species, such as Ascophyllum nodosum, which also has high phlorotannin content.
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Affiliation(s)
- Charlotte Jacobsen
- Research Group for Bioactives-Analysis and Application, National Food Institute, Technical University of Denmark, 2800 Kongens Lyngby, Denmark;
| | - Ann-Dorit M Sørensen
- Research Group for Bioactives-Analysis and Application, National Food Institute, Technical University of Denmark, 2800 Kongens Lyngby, Denmark;
| | - Susan L Holdt
- Research Group for Bioactives-Analysis and Application, National Food Institute, Technical University of Denmark, 2800 Kongens Lyngby, Denmark;
| | - Casimir C Akoh
- Food Science and Technology, University of Georgia, Athens, Georgia 30602, USA
| | - Ditte B Hermund
- Research Group for Bioactives-Analysis and Application, National Food Institute, Technical University of Denmark, 2800 Kongens Lyngby, Denmark;
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263
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van Weelden G, Bobiński M, Okła K, van Weelden WJ, Romano A, Pijnenborg JMA. Fucoidan Structure and Activity in Relation to Anti-Cancer Mechanisms. Mar Drugs 2019; 17:E32. [PMID: 30621045 PMCID: PMC6356449 DOI: 10.3390/md17010032] [Citation(s) in RCA: 174] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/29/2018] [Accepted: 01/02/2019] [Indexed: 02/06/2023] Open
Abstract
Fucoidan is a natural derived compound found in different species of brown algae and in some animals, that has gained attention for its anticancer properties. However, the exact mechanism of action is currently unknown. Therefore, this review will address fucoidans structure, the bioavailability, and all known different pathways affected by fucoidan, in order to formulate fucoidans structure and activity in relation to its anti-cancer mechanisms. The general bioactivity of fucoidan is difficult to establish due to factors like species-related structural diversity, growth conditions, and the extraction method. The main pathways influenced by fucoidan are the PI3K/AKT, the MAPK pathway, and the caspase pathway. PTEN seems to be important in the fucoidan-mediated effect on the AKT pathway. Furthermore, the interaction with VEGF, BMP, TGF-β, and estrogen receptors are discussed. Also, fucoidan as an adjunct seems to have beneficial effects, for both the enhanced effectiveness of chemotherapy and reduced toxicity in healthy cells. In conclusion, the multipotent character of fucoidan is promising in future anti-cancer treatment. However, there is a need for more specified studies of the structure⁻activity relationship of fucoidan from the most promising seaweed species.
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Affiliation(s)
- Geert van Weelden
- Faculty of Science, (Medical) Biology, Radboud University, 6525 XZ Nijmegen, The Netherlands.
- The First Department of Gynecologic Oncology and Gynecology, Medical University of Lublin, 20-081 Lublin, Poland.
| | - Marcin Bobiński
- The First Department of Gynecologic Oncology and Gynecology, Medical University of Lublin, 20-081 Lublin, Poland.
| | - Karolina Okła
- The First Department of Gynecologic Oncology and Gynecology, Medical University of Lublin, 20-081 Lublin, Poland.
| | - Willem Jan van Weelden
- Department of Obstetrics & Gynecology, Radboud University Nijmegen, Medical Centre, 6525 GA Nijmegen, The Netherlands.
| | - Andrea Romano
- Department of Obstetrics and Gynecology, GROW-School for Oncology and Developmental Biology Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands.
| | - Johanna M A Pijnenborg
- Department of Obstetrics & Gynecology, Radboud University Nijmegen, Medical Centre, 6525 GA Nijmegen, The Netherlands.
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264
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Raguraman V, L SA, J J, Palaniappan S, Gopal S, R T, R K. Sulfated polysaccharide from Sargassum tenerrimum attenuates oxidative stress induced reactive oxygen species production in in vitro and in zebrafish model. Carbohydr Polym 2019; 203:441-449. [PMID: 30318233 DOI: 10.1016/j.carbpol.2018.09.056] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/26/2018] [Accepted: 09/20/2018] [Indexed: 11/24/2022]
Abstract
The sulfated polysaccharide (SP) was isolated from the brown alga S. tenerrimum. The chemical composition of SP composed of 57 ± 0.29% of total sugar, 1.14 ± 0.28% of protein and 25.6 ± 0.45% of sulfate. Elemental analysis of SP shows 28.8% of carbon, 4.02% of hydrogen and 0.29% of nitrogen. The molecular weight of SP was estimated as 31 kDa. Further, the SP was characterized through FT-IR, 1H-NMR, GC-MS, XRD and TGA analysis. The DPPH and ABTS radical scavenging activity of SP showed 34.03-62.70% and 22.94-38.04% at the concentration of 25-125 μg/mL respectively. In addition, SP exerted a protective role against H2O2 mediated oxidative stress in fibroblast cells through scavenging intracellular ROS. Furthermore, ROS generation and cell death were significantly decreased in SP treated zebrafish embryos at 150 μg/mL, whereas the survival rate was increased. The protective effect of SP against oxidative stress might be utilized in pharmacological industries.
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Affiliation(s)
- Vasantharaja Raguraman
- Centre for Ocean Research, Sathyabama Institute of Science and Technology, Chennai, 600 119, Tamil Nadu, India
| | - Stanley Abraham L
- Centre for Ocean Research, Sathyabama Institute of Science and Technology, Chennai, 600 119, Tamil Nadu, India.
| | - Jyotsna J
- Centre for Ocean Research, Sathyabama Institute of Science and Technology, Chennai, 600 119, Tamil Nadu, India
| | - Seedevi Palaniappan
- Department of Environmental Science, Periyar University, Salem, 636011, Tamil Nadu, India
| | - Sathishkannan Gopal
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Thirugnanasambandam R
- Centre for Ocean Research, Sathyabama Institute of Science and Technology, Chennai, 600 119, Tamil Nadu, India
| | - Kirubagaran R
- Marine Biotechnology Division, ESSO-NIOT, Chennai, 600100, Tamil Nadu, India
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265
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Zhao C, Lai S, Wu D, Liu D, Zou X, Ismail A, El-Seedi H, Arroo RR, Xiao J. miRNAs as Regulators of Antidiabetic Effects of Fucoidans. EFOOD 2019. [DOI: 10.2991/efood.k.190822.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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266
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Muhamad II, Zulkifli N, Selvakumaran SA, Lazim NAM. Bioactive Algal-Derived Polysaccharides: Multi-Functionalization, Therapeutic Potential and Biomedical Applications. Curr Pharm Des 2019; 25:1147-1162. [PMID: 31258069 DOI: 10.2174/1381612825666190618152133] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 05/30/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND In recent decades, there has been an increased interest in the utilization of polysaccharides showing biological activity for various novel applications owing to their biocompatibility, biodegradability, non-toxicity, and some specific therapeutic activities. Increasing studies have started in the past few years to develop algal polysaccharides-based biomaterials for various applications. METHODS Saccharide mapping or enzymatic profiling plays a role in quality control of polysaccharides. Whereby, in vitro and in vivo tests as well as toxicity level discriminating polysaccharides biological activities. Extraction and purification methods are performed in obtaining algal derived polysaccharides followed by chromatographic profiles of their active compounds, structural features, physicochemical properties, and reported biological activities. RESULTS Marine algae are capable of synthesizing Glycosaminoglycans (GAGs) and non-GAGs or GAG mimetics such as sulfated glycans. The cell walls of algae are rich in sulfated polysaccharides, including alginate, carrageenan, ulvan and fucoidan. These biopolymers are widely used algal-derived polysaccharides for biological and biomedical applications due to their biocompatibility and availability. They constitute biochemical compounds that have multi-functionalization, therapeutic potential and immunomodulatory abilities, making them promising bioactive products and biomaterials with a wide range of biomedical applications. CONCLUSION Algal-derived polysaccharides with clearly elucidated compositions/structures, identified cellular activities, as well as desirable physical properties have shown the potential that may create new opportunities. They could be maximally exploited to serve as therapeutic tools such as immunoregulatory agents or drug delivery vehicles. Hence, novel strategies could be applied to tailor multi-functionalization of the polysaccharides from algal species with vast biomedical application potentials.
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Affiliation(s)
- Ida Idayu Muhamad
- School of Chemical and Energy, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
- School of Bioscience and Medical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Nabilah Zulkifli
- School of Bioscience and Medical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
| | - Suguna A/P Selvakumaran
- Department of Biotechnology, School of Science and Engineering, Manipal University, Nilai, Negeri Sembilan, Malaysia
| | - Nurul Asmak Md Lazim
- School of Chemical and Energy, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
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267
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Lin TY, Tseng AJ, Chao CH, Lu MK. Microelements induce changes in characterization of sulfated polysaccharides from Antrodia cinnamomea. Int J Biol Macromol 2018; 120:952-958. [DOI: 10.1016/j.ijbiomac.2018.08.112] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 07/17/2018] [Accepted: 08/21/2018] [Indexed: 02/06/2023]
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268
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Lu J, Shi KK, Chen S, Wang J, Hassouna A, White LN, Merien F, Xie M, Kong Q, Li J, Ying T, White WL, Nie S. Fucoidan Extracted from the New Zealand Undaria pinnatifida-Physicochemical Comparison against Five Other Fucoidans: Unique Low Molecular Weight Fraction Bioactivity in Breast Cancer Cell Lines. Mar Drugs 2018; 16:E461. [PMID: 30469516 PMCID: PMC6316445 DOI: 10.3390/md16120461] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 02/05/2023] Open
Abstract
Fucoidan, the complex fucose-containing sulphated polysaccharide varies considerably in structure, composition, and bioactivity, depending on the source, species, seasonality, and extraction method. In this study, we examined five fucoidans extracted from the same seaweed species Undaria pinnatifida but from different geological locations, and compared them to the laboratory-grade fucoidan from Sigma (S). The five products differed in molecular composition. The amount of over 2 kDa low molecular weight fraction (LMWF) of the New Zealand crude fucoidan (S1) was larger than that of S, and this fraction was unique, compared to the other four fucoidans. The difference of molecular compositions between S and S1 explained our previous observation that S1 exhibited different anticancer profile in some cancer cell lines, compared with S. Since we observed this unique LMWF, we compared the cytotoxic effects of a LMWF and a high molecular weight fucoidan (HMWF) in two breast cancer cell lines-MCF-7 and MDA-MB-231. Results indicated that the molecular weight is a critical factor in determining the anti-cancer potential of fucoidan, from the New Zealand U. pinnatifida, as the LMWF exhibited a dose-dependent inhibition on the proliferation of breast cancer cells, significantly better than the HMWF, in both cell lines. A time-dependent inhibition was only observed in the MCF-7. Induction of caspase-dependent apoptosis was observed in the MDA-MB-231 cells, through the intrinsic apoptosis pathway alone, or with the extrinsic pathway. LMWF stimulated a dose-dependent NOS activation in the MDA-MB-231 cells. In conclusion, the fucoidan extracted from the New Zealand U. pinnatifida contains a unique LMWF, which could effectively inhibit the growth of breast cancer cell lines. Therefore, the LMWF from New Zealand U. pinnatifida could be used as a supplement cancer treatment.
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Affiliation(s)
- Jun Lu
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518071, China.
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China.
- School of Interprofessional Health Studies, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
- Institute of Biomedical Technology, Auckland University of Technology, Auckland 1010, New Zealand.
| | - Keyu Kally Shi
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
| | - Shuping Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Junqiao Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Amira Hassouna
- School of Interprofessional Health Studies, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Cairo University, Cairo 12613, Egypt.
| | - Loretta Nicole White
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
| | - Fabrice Merien
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
- AUT-Roche Diagnostics Laboratory, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
| | - Mingyong Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Qingjun Kong
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China.
| | - Jinyao Li
- Xinjiang Key Laboratory of Biological Resources and Genetic Engineering, College of Life Science and Technology, Xinjiang University, Urumqi 830046, Xinjiang, China.
| | - Tianlei Ying
- Key Laboratory of Medical Molecular Virology of MOE/MOH, Shanghai Medical College, Fudan University, 130 Dong An Road, Shanghai 200032, China.
| | - William Lindsey White
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
| | - Shaoping Nie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
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269
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Cao HTT, Mikkelsen MD, Lezyk MJ, Bui LM, Tran VTT, Silchenko AS, Kusaykin MI, Pham TD, Truong BH, Holck J, Meyer AS. Novel Enzyme Actions for Sulphated Galactofucan Depolymerisation and a New Engineering Strategy for Molecular Stabilisation of Fucoidan Degrading Enzymes. Mar Drugs 2018; 16:E422. [PMID: 30388774 PMCID: PMC6267234 DOI: 10.3390/md16110422] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 10/19/2018] [Accepted: 10/22/2018] [Indexed: 02/06/2023] Open
Abstract
Fucoidans from brown macroalgae have beneficial biomedical properties but their use as pharma products requires homogenous oligomeric products. In this study, the action of five recombinant microbial fucoidan degrading enzymes were evaluated on fucoidans from brown macroalgae: Sargassum mcclurei, Fucus evanescens, Fucus vesiculosus, Turbinaria ornata, Saccharina cichorioides, and Undaria pinnatifida. The enzymes included three endo-fucoidanases (EC 3.2.1.-GH 107), FcnA2, Fda1, and Fda2, and two unclassified endo-fucoglucuronomannan lyases, FdlA and FdlB. The oligosaccharide product profiles were assessed by carbohydrate-polyacrylamide gel electrophoresis and size exclusion chromatography. The recombinant enzymes FcnA2, Fda1, and Fda2 were unstable but were stabilised by truncation of the C-terminal end (removing up to 40% of the enzyme sequence). All five enzymes catalysed degradation of fucoidans containing α(1→4)-linked l-fucosyls. Fda2 also degraded S. cichorioides and U. pinnatifida fucoidans that have α(1→3)-linked l-fucosyls in their backbone. In the stabilised form, Fda1 also cleaved α(1→3) bonds. For the first time, we also show that several enzymes catalyse degradation of S. mcclurei galactofucan-fucoidan, known to contain α(1→4) and α(1→3) linked l-fucosyls and galactosyl-β(1→3) bonds in the backbone. These data enhance our understanding of fucoidan degrading enzymes and their substrate preferences and may assist development of enzyme-assisted production of defined fuco-oligosaccharides from fucoidan substrates.
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Affiliation(s)
- Hang T T Cao
- Protein Chemistry and Enzyme Technology, DTU Bioengineering, Department of Biotechnology and Biomedicine, Technical University of Denmark, Building 221, 2800 Kongens Lyngby, Denmark.
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, 02 Hung Vuong Street, Nhatrang 650000, Vietnam.
| | - Maria D Mikkelsen
- Protein Chemistry and Enzyme Technology, DTU Bioengineering, Department of Biotechnology and Biomedicine, Technical University of Denmark, Building 221, 2800 Kongens Lyngby, Denmark.
| | - Mateusz J Lezyk
- Protein Chemistry and Enzyme Technology, DTU Bioengineering, Department of Biotechnology and Biomedicine, Technical University of Denmark, Building 221, 2800 Kongens Lyngby, Denmark.
| | - Ly M Bui
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, 02 Hung Vuong Street, Nhatrang 650000, Vietnam.
| | - Van T T Tran
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, 02 Hung Vuong Street, Nhatrang 650000, Vietnam.
| | - Artem S Silchenko
- Laboratory of Enzyme Chemistry, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 100-Let Vladivostoku Ave., Vladivostok 690022, Russia.
| | - Mikhail I Kusaykin
- Laboratory of Enzyme Chemistry, G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159 100-Let Vladivostoku Ave., Vladivostok 690022, Russia.
| | - Thinh D Pham
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, 02 Hung Vuong Street, Nhatrang 650000, Vietnam.
| | - Bang H Truong
- NhaTrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, 02 Hung Vuong Street, Nhatrang 650000, Vietnam.
| | - Jesper Holck
- Protein Chemistry and Enzyme Technology, DTU Bioengineering, Department of Biotechnology and Biomedicine, Technical University of Denmark, Building 221, 2800 Kongens Lyngby, Denmark.
| | - Anne S Meyer
- Protein Chemistry and Enzyme Technology, DTU Bioengineering, Department of Biotechnology and Biomedicine, Technical University of Denmark, Building 221, 2800 Kongens Lyngby, Denmark.
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270
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Leal D, Mansilla A, Matsuhiro B, Moncada-Basualto M, Lapier M, Maya JD, Olea-Azar C, De Borggraeve WM. Chemical structure and biological properties of sulfated fucan from the sequential extraction of subAntarctic Lessonia sp (Phaeophyceae). Carbohydr Polym 2018; 199:304-313. [PMID: 30143133 DOI: 10.1016/j.carbpol.2018.07.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 06/29/2018] [Accepted: 07/04/2018] [Indexed: 01/03/2023]
Abstract
This work is related to the structural characterization of the sulfated polysaccharide from Lessonia sp and the study of its antioxidant and antiparasitic properties. Sequential extraction afforded D-mannitol as the only low MW sugar alcohol. Extraction with 2% CaCl2 afforded in 3.0% yield, a sulfated fucan (SF). Its major fraction (48.5% yield), isolated by ion-exchange chromatography corresponds to a linear polymer of α-l-fucopyranosil residues linked 1→3, sulfated at the O-4 and partially at O-2 positions. By alkaline extraction, sodium alginate (10.3% yield) was obtained. The antioxidant capacity of SF by ESR showed high elimination index (IC50, mg/mL) of hydroxyl (0.27), alkoxy (10.05), and peroxyl (82.88) radicals in relation to commercial mannitol. SF showed activity against the epimastigote form of Trypanosoma cruzi parasite (250 μg/mL) and low cytotoxicity in murine cells (367 μg/mL). The elimination capacity of radicals in aqueous medium of SF would allow its potential biomedical application.
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Affiliation(s)
- D Leal
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, Av. L. B. O'Higgins 3363, Santiago, Chile.
| | - A Mansilla
- Laboratorio de Macroalgas Antárticas y Subantárticas, Universidad de Magallanes, Av. Bulnes 1465, Punta Arenas, and Instituto de Ecología y Biodiversidad, Chile
| | - B Matsuhiro
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, Av. L. B. O'Higgins 3363, Santiago, Chile
| | - M Moncada-Basualto
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, Av. L. B. O'Higgins 3363, Santiago, Chile; Departamento de Química Inorgánica y Analítica, Universidad de Chile, Av. Sergio Livingstone 1007, Santiago, Chile
| | - M Lapier
- Departamento de Farmacología Molecular y Clínica, Facultad de Medicina, Universidad de Chile, Av. Independencia 1107, Santiago, Chile
| | - J D Maya
- Departamento de Farmacología Molecular y Clínica, Facultad de Medicina, Universidad de Chile, Av. Independencia 1107, Santiago, Chile
| | - C Olea-Azar
- Departamento de Química Inorgánica y Analítica, Universidad de Chile, Av. Sergio Livingstone 1007, Santiago, Chile
| | - W M De Borggraeve
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001 Heverlee, Belgium
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271
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Schultz-Johansen M, Cueff M, Hardouin K, Jam M, Larocque R, Glaring MA, Hervé C, Czjzek M, Stougaard P. Discovery and screening of novel metagenome-derived GH107 enzymes targeting sulfated fucans from brown algae. FEBS J 2018; 285:4281-4295. [PMID: 30230202 DOI: 10.1111/febs.14662] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 06/16/2018] [Accepted: 09/17/2018] [Indexed: 12/17/2023]
Abstract
Sulfated fucans, often denoted as fucoidans, are highly variable cell wall polysaccharides of brown algae, which possess a wide range of bioactive properties with potential pharmaceutical applications. Due to their complex architecture, the structures of algal fucans have until now only been partly determined. Enzymes capable of hydrolyzing sulfated fucans may allow specific release of defined bioactive oligosaccharides and may serve as a tool for structural elucidation of algal walls. Currently, such enzymes include only a few hydrolases belonging to the glycoside hydrolase family 107 (GH107), and little is known about their mechanistics and the substrates they degrade. In this study, we report the identification and recombinant production of three novel GH107 family proteins derived from a marine metagenome. Activity screening against a large substrate collection showed that all three enzymes degraded sulfated fucans from brown algae in the order Fucales. This is in accordance with a hydrolytic activity against α-1,4-fucosidic linkages in sulfated fucans as reported for previous GH107 members. Also, the activity screening gave new indications about the structural differences in brown algal cell walls. Finally, sequence analyses allowed identification of the proposed catalytic residues of the GH107 family. The findings presented here form a new basis for understanding the GH107 family of enzymes and investigating the complex sulfated fucans from brown algae. DATABASE: The assembled metagenome and raw sequence data is available at EMBL-EBI (Study number: PRJEB28480). Sequences of the GH107 fucanases (Fp273, Fp277, and Fp279) have been deposited in GenBank under accessions MH755451-MH755453.
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Affiliation(s)
| | - Marie Cueff
- UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Sorbonne Universités, Roscoff, Bretagne, France
| | - Kévin Hardouin
- UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Sorbonne Universités, Roscoff, Bretagne, France
| | - Murielle Jam
- UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Sorbonne Universités, Roscoff, Bretagne, France
| | - Robert Larocque
- UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Sorbonne Universités, Roscoff, Bretagne, France
| | - Mikkel A Glaring
- Department of Plant and Environmental Sciences, University of Copenhagen, Denmark
| | - Cécile Hervé
- UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Sorbonne Universités, Roscoff, Bretagne, France
| | - Mirjam Czjzek
- UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Sorbonne Universités, Roscoff, Bretagne, France
| | - Peter Stougaard
- Department of Plant and Environmental Sciences, University of Copenhagen, Denmark
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272
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Ramu S, Mahendra SA, Kunchakuri K, Karadi PP, Swetha K, Radhakrishnan G. Isolation, characterisation and in vitro screening of anticataract potential of Fucoidan from Sargassum wightii Greville. JOURNAL OF HERBMED PHARMACOLOGY 2018. [DOI: 10.15171/jhp.2018.37] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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273
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Chen YC, Cheng CY, Liu CT, Sue YM, Chen TH, Hsu YH, Hwang PA, Chen CH. Alleviative effect of fucoxanthin-containing extract from brown seaweed Laminaria japonica on renal tubular cell apoptosis through upregulating Na +/H + exchanger NHE1 in chronic kidney disease mice. JOURNAL OF ETHNOPHARMACOLOGY 2018; 224:391-399. [PMID: 29920359 DOI: 10.1016/j.jep.2018.06.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 06/11/2018] [Accepted: 06/15/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Brown seaweed is a common food for Asians, and the bioactive ingredient fucoxanthin exerts anti-apoptotic activities in several cell types. Renal tubular cell apoptosis is one of the common cellular events leading to renal fibrosis and chronic kidney disease (CKD). However, the influence of fucoxanthin-containing brown seaweed extract on CKD is still unknown. We intended to evaluate the inhibitory effect of fucoxanthin-containing extract from brown seaweed on renal apoptosis under CKD condition and its molecular mechanism. MATERIALS AND METHODS The fucoxanthin-containing brown seaweed extract (LJE) was prepared from Laminaria japonica. We investigated how LJE influences on both doxorubicin-treated rat renal tubular cells (NRK-52E) and the renal symptoms of nephrectomy-induced CKD mice. RESULTS LJE inhibited doxorubicin-induced apoptosis and upregulated Na+/H+ exchanger isoform 1 (NHE1) expression in NRK-52E cells, which were blocked by the NHE1 inhibitor cariporide. LJE also upregulated peroxisome proliferator-activated receptor alpha (PPARα). PPARα siRNA transfection inhibited LJE-induced NHE1 expression and anti-apoptotic effect. In CKD mice, LJE increased NHE1 expression in renal tubules and reduced apoptotic renal tubular cells, but not in PPARα knockout mice. The inhibitory effect of LJE on apoptosis also reduced renal tubulointerstitial fibrosis and improved renal function in CKD mice. CONCLUSION We demonstrated that LJE inhibits renal apoptosis via NHE1 upregulation. The anti-apoptotic effect of LJE also improves renal function in CKD mice. Therefore, fucoxanthin-containing brown seaweed may have a therapeutic potential for CKD patients.
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Affiliation(s)
- Yen-Cheng Chen
- Division of Nephrology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chung-Yi Cheng
- Division of Nephrology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chung-Te Liu
- Division of Nephrology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yuh-Mou Sue
- Division of Nephrology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Tso-Hsiao Chen
- Division of Nephrology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yung-Ho Hsu
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Pai-An Hwang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Taiwan
| | - Cheng-Hsien Chen
- Division of Nephrology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Nephrology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan.
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274
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Vickers C, Liu F, Abe K, Salama-Alber O, Jenkins M, Springate CMK, Burke JE, Withers SG, Boraston AB. Endo-fucoidan hydrolases from glycoside hydrolase family 107 (GH107) display structural and mechanistic similarities to α-l-fucosidases from GH29. J Biol Chem 2018; 293:18296-18308. [PMID: 30282808 DOI: 10.1074/jbc.ra118.005134] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/25/2018] [Indexed: 11/06/2022] Open
Abstract
Fucoidans are chemically complex and highly heterogeneous sulfated marine fucans from brown macro algae. Possessing a variety of physicochemical and biological activities, fucoidans are used as gelling and thickening agents in the food industry and have anticoagulant, antiviral, antitumor, antibacterial, and immune activities. Although fucoidan-depolymerizing enzymes have been identified, the molecular basis of their activity on these chemically complex polysaccharides remains largely uninvestigated. In this study, we focused on three glycoside hydrolase family 107 (GH107) enzymes: MfFcnA and two newly identified members, P5AFcnA and P19DFcnA, from a bacterial species of the genus Psychromonas Using carbohydrate-PAGE, we show that P5AFcnA and P19DFcnA are active on fucoidans that differ from those depolymerized by MfFcnA, revealing differential substrate specificity within the GH107 family. Using a combination of X-ray crystallography and NMR analyses, we further show that GH107 family enzymes share features of their structures and catalytic mechanisms with GH29 α-l-fucosidases. However, we found that GH107 enzymes have the distinction of utilizing a histidine side chain as the proposed acid/base catalyst in its retaining mechanism. Further interpretation of the structural data indicated that the active-site architectures within this family are highly variable, likely reflecting the specificity of GH107 enzymes for different fucoidan substructures. Together, these findings begin to illuminate the molecular details underpinning the biological processing of fucoidans.
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Affiliation(s)
- Chelsea Vickers
- From the Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia 8W 3P6, Canada
| | - Feng Liu
- the Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada, and
| | - Kento Abe
- From the Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia 8W 3P6, Canada
| | - Orly Salama-Alber
- From the Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia 8W 3P6, Canada
| | - Meredith Jenkins
- From the Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia 8W 3P6, Canada
| | | | - John E Burke
- From the Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia 8W 3P6, Canada
| | - Stephen G Withers
- the Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada, and
| | - Alisdair B Boraston
- From the Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia 8W 3P6, Canada,.
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275
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Thinh PD, Ly BM, Usoltseva RV, Shevchenko NM, Rasin AB, Anastyuk SD, Malyarenko OS, Zvyagintseva TN, San PT, Ermakova SP. A novel sulfated fucan from Vietnamese sea cucumber Stichopus variegatus: Isolation, structure and anticancer activity in vitro. Int J Biol Macromol 2018; 117:1101-1109. [DOI: 10.1016/j.ijbiomac.2018.06.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/31/2018] [Accepted: 06/05/2018] [Indexed: 12/30/2022]
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276
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Fucoidan Sulfatases from Marine Bacterium Wenyingzhuangia fucanilytica CZ1127 T. Biomolecules 2018; 8:biom8040098. [PMID: 30248971 PMCID: PMC6315715 DOI: 10.3390/biom8040098] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 09/14/2018] [Accepted: 09/14/2018] [Indexed: 01/01/2023] Open
Abstract
Fucoidans belong to a structurally heterogeneous class of sulfated polysaccharides isolated from brown algae. They have a wide spectrum of biological activities. The complex structures of these polysaccharides hinder structure-activity relationships determination. Fucoidan sulfatases can make useful tools for the determination of the fine chemical structure of fucoidans. In this study, identification and preparation of two recombinant sulfatases able to catalyze the cleavage of sulfate groups from fragments of fucoidan molecules is described for the first time. Two genes of sulfatases swf1 and swf4 of the marine bacterium Wenyingzhuangia fucanilytica CZ1127T were cloned and the proteins were produced in Escherichia coli cells. Sulfatases SWF1 and SWF4 are assigned to S1_17 and S1_25 subfamilies of formylglycine-dependent enzymes of S1 family (SulfAtlas). Some molecular and biochemical characteristics of recombinant fucoidan sulfatases have been studied. Detailed specificity and catalytic features of sulfatases were determined using various sulfated fucooligosaccharides. Structures of products produced by SWF1 and SWF4 were established by nuclear magnetic resonance (NMR) spectroscopy. Based on the obtained data, the enzymes are classified as fucoidan exo-2O-sulfatase (SWF1) and fucoidan exo-3O-sulfatase (SWF4). In addition, we demonstrated the sequential action of sulfatases on 2,3-di-O-sulfated fucooligosacchrides, which indicates an exolitic degradation pathway of fucoidan by a marine bacterium W. fucanilytica CZ1127T.
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277
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Zhao Y, Zheng Y, Wang J, Ma S, Yu Y, White WL, Yang S, Yang F, Lu J. Fucoidan Extracted from Undaria pinnatifida: Source for Nutraceuticals/Functional Foods. Mar Drugs 2018; 16:E321. [PMID: 30205616 PMCID: PMC6164441 DOI: 10.3390/md16090321] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 09/04/2018] [Accepted: 09/08/2018] [Indexed: 01/01/2023] Open
Abstract
The importance of fucoidan as a functional ingredient in food, health products, and pharmaceutics is well-recognized due to its beneficial biological effects. Fucoidan is usually extracted from brown seaweeds, including Undaria pinnatifida. Fucoidan exhibits beneficial bio-activity and has antioxidant, anticancer, and anticoagulant properties. This review focuses on the biological activity of U. pinnatifida-derived fucoidan and investigates its structure⁻activity or fraction⁻activity relationship. It also describes several fucoidan extracts, along with their claimed anticancer effects. It aims to provide information and thoughts for future research such as the development of fucoidan into functional foods or nutraceuticals.
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Affiliation(s)
- Yu Zhao
- Life and Environment Science College, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China.
| | - Yizhou Zheng
- Life and Environment Science College, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China.
| | - Jie Wang
- Life and Environment Science College, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China.
| | - Shuyi Ma
- Life and Environment Science College, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China.
| | - Yiming Yu
- Life and Environment Science College, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China.
| | - William Lindsey White
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
| | - Shiping Yang
- Life and Environment Science College, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China.
| | - Fan Yang
- Life and Environment Science College, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China.
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Jun Lu
- Life and Environment Science College, Shanghai Normal University, 100 Guilin Road, Shanghai 200234, China.
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
- School of Interprofessional Health Studies, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1010, New Zealand.
- Institute for Biomedical Technology, Auckland University of Technology, Auckland 1010, New Zealand.
- College of Life and Marine Sciences, Shenzhen University, Shenzhen 518060, China.
- College of Food Engineering and Nutrition Sciences, Shaanxi Normal University, Xi'an 710119, China.
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278
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Pinteus S, Lemos MF, Alves C, Neugebauer A, Silva J, Thomas OP, Botana LM, Gaspar H, Pedrosa R. Marine invasive macroalgae: Turning a real threat into a major opportunity - the biotechnological potential of Sargassum muticum and Asparagopsis armata. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.06.018] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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279
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Burney M, Mathew L, Gaikwad A, Nugent EK, Gonzalez AO, Smith JA. Evaluation Fucoidan Extracts From Undaria pinnatifida and Fucus vesiculosus in Combination With Anticancer Drugs in Human Cancer Orthotopic Mouse Models. Integr Cancer Ther 2018; 17:755-761. [PMID: 29156992 PMCID: PMC6142089 DOI: 10.1177/1534735417740631] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 09/13/2017] [Accepted: 10/04/2017] [Indexed: 01/16/2023] Open
Abstract
OBJECTIVE To determine the activity of fucoidan from Undaria pinnatifida (UPF) and Fucus vesiculosus (FVF) when given in combination of chemotherapy drugs using selected human breast or ovarian cancer orthotopic mouse models. METHODS Mice were inoculated with 1 × 106 cells of TOV-112d, MCF-7, or ZR-75 subcutaneously or SKOV3-GFP-Luc intraperitoneally on day 0. MCF-7 and ZR-75 mice were administered with estradiol valerate 2 mg/kg in 0.2 mL castor oil subcutaneously two days prior to cell inoculation. Mice were randomized to one of six arms (N = 10/arm) paclitaxel, UPF/paclitaxel, FVF/paclitaxel, tamoxifen, UPF/tamoxifen, or FVF/tamoxifen. Tumors were measured three times per week for 28 days. RESULTS Improved activity was observed with UPF or FVF in combination with tamoxifen in both the MCF-7 and ZR-75D breast cancer mouse models. Decreased activity of paclitaxel was observed when given in combination with UPF or FVF in both breast cancer mouse models. The combination of FVF/tamoxifen in the TOV-112d ovarian cancer mouse model had improved activity but no there was difference observed with the UPF/tamoxifen in either ovarian cancer mouse model. No difference was observed with combination of UPF or FVF with paclitaxel in human ovarian cancer SKOV3 or TOV-112d orthotopic mouse models. CONCLUSION This study did confirm that UPF/FVF in combination with tamoxifen did not decrease tamoxifen activity in both breast and ovarian cancer, with some potential to improve activity compared to tamoxifen alone in breast cancers. Previous in vitro studies had suggested UPF and FVF had overall synergistic activity with paclitaxel; however, in the current in vivo human cancer mouse model studies there was no change in paclitaxel activity when given in combination with UPF or FVF in either of the two human ovarian cancer models. Furthermore, this study demonstrated that UPF or FVF given in combination with paclitaxel had a potential antagonistic effect in breast cancer models. Additional studies are warranted to delineate mechanisms contributing to variation in the in vivo activity when given in combination with paclitaxel. As a first step, a clinical pharmacokinetic study evaluating impact of FVF/UPF given in combination with chemotherapy in patients with solid tumors is underway.
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Affiliation(s)
- Maryam Burney
- 1 University of Texas Health Science Center McGovern Medical School at Houston, Houston, TX, USA
| | - Lata Mathew
- 1 University of Texas Health Science Center McGovern Medical School at Houston, Houston, TX, USA
| | - Anjali Gaikwad
- 1 University of Texas Health Science Center McGovern Medical School at Houston, Houston, TX, USA
| | - Elizabeth K Nugent
- 1 University of Texas Health Science Center McGovern Medical School at Houston, Houston, TX, USA
- 2 UTHealth-Memorial Hermann Cancer Center-TMC, Houston, TX, USA
| | - Anneliese O Gonzalez
- 1 University of Texas Health Science Center McGovern Medical School at Houston, Houston, TX, USA
- 2 UTHealth-Memorial Hermann Cancer Center-TMC, Houston, TX, USA
| | - Judith A Smith
- 1 University of Texas Health Science Center McGovern Medical School at Houston, Houston, TX, USA
- 2 UTHealth-Memorial Hermann Cancer Center-TMC, Houston, TX, USA
- 3 Department of Pharmacy, Memorial Hermann Hospital-TMC, Houston, TX, USA
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280
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Abstract
Seaweeds are a sustainable source of novel functional ingredients with applicability in pharmaceutics, biotechnology, and food science. The bioactivity of most of these marine compounds has scarcely been studied. The present study overviews the bioactivity of the polysaccharide fucoidan derived from Fucus vesiculosus brown algae as an antimicrobial agent against Listeria monocytogenes and Salmonella enterica serovar Typhimurium. The results obtained in vitro in reference medium reveal a bacteriostatic and bactericidal effect of fucoidan against both pathogens, this bioactivity being significantly dependent (p-value ≤ 0.05) on the concentration, 5–1000 μg/mL, temperature, 8–37 °C, and exposure time, 0–12 days. The results were validated in the formulation of a new functional pasteurized apple beverage to be commercialized under refrigeration. Fucoidan added at 25–100 μg/mL was highly effective against both pathogens. These results increase knowledge for the future formulation of new functional beverages that include marine compounds (high content in fibre, high content in protein; prebiotic and antioxidant properties), additionally revealing antimicrobial potential.
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281
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Jun JY, Jung MJ, Jeong IH, Yamazaki K, Kawai Y, Kim BM. Antimicrobial and Antibiofilm Activities of Sulfated Polysaccharides from Marine Algae against Dental Plaque Bacteria. Mar Drugs 2018; 16:E301. [PMID: 30150576 PMCID: PMC6165115 DOI: 10.3390/md16090301] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 08/08/2018] [Accepted: 08/23/2018] [Indexed: 01/27/2023] Open
Abstract
Dental plaque biofilms cause various dental diseases; therefore, inhibiting the growths of the dental plaque bacteria which produce biofilms can be a strategy for preventing dental disease. Certain sulfated polysaccharides from marine algae exert antimicrobial activities against human bacterial pathogens in addition to their physiological benefits. On the basis of these observations, the antimicrobial and antibiofilm activities of sulfated polysaccharides from different marine algae were evaluated against dental plaque bacteria. Among the sulfated polysaccharides, a fucoidan from Fucus vesiculosus showed notable antimicrobial activities against the selected dental plaque bacteria, including some foodborne pathogenic bacteria. The minimum inhibitory concentrations were of 125 to 1000 µg mL-1. Regarding the antibiofilm activity, the fucoidan at the concentrations of above 250 µg mL-1 completely suppressed the biofilm formations and planktonic cell growths of Streptococcus mutans and S. sobrinus. However, no eliminative effect on the completed biofilm was observed. The fucoidan consisted of almost fucose base polysaccharide containing approximately 14.0% sulfate content. The average molecular weight of the fucoidan was changed by heat treatment (121 °C for 15 min) and it affected the antimicrobial activity.
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Affiliation(s)
- Joon-Young Jun
- Division of Strategic Food Research, Korea Food Research Institute, Gangneung 25440, Korea.
| | - Min-Jeong Jung
- Division of Strategic Food Research, Korea Food Research Institute, Gangneung 25440, Korea.
| | - In-Hak Jeong
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangneung 25457, Korea.
| | - Koji Yamazaki
- Faculty of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Japan.
| | - Yuji Kawai
- Faculty of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Japan.
| | - Byoung-Mok Kim
- Division of Strategic Food Research, Korea Food Research Institute, Gangneung 25440, Korea.
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282
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Kim YI, Oh WS, Song PH, Yun S, Kwon YS, Lee YJ, Ku SK, Song CH, Oh TH. Anti-Photoaging Effects of Low Molecular-Weight Fucoidan on Ultraviolet B-Irradiated Mice. Mar Drugs 2018; 16:md16080286. [PMID: 30126169 PMCID: PMC6117676 DOI: 10.3390/md16080286] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 08/08/2018] [Accepted: 08/17/2018] [Indexed: 11/16/2022] Open
Abstract
Ultraviolet (UV) B exposure induces DNA damage and production of reactive oxygen species (ROS), which causes skin photoaging through signaling pathways of inflammation and modulation of extracellular matrix remodeling proteins, collagens, and matrix metalloproteinase (MMP). As low molecular-weight fucoidan (LMF) has potential antioxidant and anti-inflammatory properties, we examined the protective effects of LMF against UVB-induced photoaging. A UVB-irradiated mouse model was topically treated with myricetin or LMF at 2.0, 1.0 and 0.2 mg/cm2 (LMF2.0, LMF1.0 and LMF0.2, respectively) once a day for 15 weeks. Wrinkle formation, inflammation, oxidative stress, MMP expression, and apoptosis in the treated regions were compared with those in a distilled water-treated photoaging model (UVB control). LMF treatments, particularly LMF2.0 and LMF1.0, significantly inhibited the wrinkle formation, skin edema, and neutrophil recruitment into the photo-damaged lesions, compared with those in the UVB control. While LMF decreased interleukin (IL)-1β release, it increased IL-10. The LMF treatment inhibited the oxidative stresses (malondialdehyde and superoxide anion) and enhanced endogenous antioxidants (glutathione). Additionally, LMF reduced the mRNA expression of MMP-1, 9, and 13. The histopathological analyses revealed the anti-photoaging effects of LMF exerted via its antioxidant, anti-apoptotic, and MMP-9-inhibiting effects. These suggest that LMF can be used as a skin-protective remedy for photoaging.
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Affiliation(s)
- Young-In Kim
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea.
- KPC Corporation, Gwangju 12773, Korea.
| | - Won-Seok Oh
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea.
| | - Phil Hyun Song
- Department of Urology, College of Medicine, Yeungnam University, Daegu 42415, Korea.
| | - Sungho Yun
- Department of Veterinary Surgery, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea.
| | - Young-Sam Kwon
- Department of Veterinary Surgery, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea.
| | - Young Joon Lee
- Department of Preventive Medicine, College of Korean Medicine, Daegu Haany University, Gyeongsan 38610, Korea.
| | - Sae-Kwang Ku
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan 38610, Korea.
| | - Chang-Hyun Song
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan 38610, Korea.
| | - Tae-Ho Oh
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea.
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283
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Jeong Y, Thuy LT, Ki SH, Ko S, Kim S, Cho WK, Choi JS, Kang SM. Multipurpose Antifouling Coating of Solid Surfaces with the Marine-Derived Polymer Fucoidan. Macromol Biosci 2018; 18:e1800137. [DOI: 10.1002/mabi.201800137] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/04/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Yeonwoo Jeong
- Department of Chemistry; Chungbuk National University; Chungbuk 28644 Republic of Korea
| | - Le Thi Thuy
- Department of Biochemistry; Chungnam National University; Daejeon 34134 Republic of Korea
| | - So Hyun Ki
- Department of Chemistry; Chungnam National University; Daejeon 34134 Republic of Korea
| | - Sangwon Ko
- Transportation Environmental Research Team; Korea Railroad Research Institute; Uiwang 16105 Republic of Korea
| | - Suyeob Kim
- Department of Marine Biomaterials and Aquaculture; Pukyong National University; Busan 48513 Republic of Korea
| | - Woo Kyung Cho
- Department of Chemistry; Chungnam National University; Daejeon 34134 Republic of Korea
| | - Joon Sig Choi
- Department of Biochemistry; Chungnam National University; Daejeon 34134 Republic of Korea
| | - Sung Min Kang
- Department of Chemistry; Chungbuk National University; Chungbuk 28644 Republic of Korea
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284
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Li P, Wen S, Sun K, Zhao Y, Chen Y. Structure and Bioactivity Screening of a Low Molecular Weight Ulvan from the Green Alga Ulothrix flacca. Mar Drugs 2018; 16:md16080281. [PMID: 30111709 PMCID: PMC6117715 DOI: 10.3390/md16080281] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/03/2018] [Accepted: 08/09/2018] [Indexed: 12/31/2022] Open
Abstract
A water-soluble low molecular–weight polysaccharide named UP2-1 was isolated and purified from the marine green algae Ulothrixflacca using ion-exchange and size-exclusion chromatography. Composition and characteristics analyses showed that UP2-1 was a sulfated glucuronorhamnan consisting of rhamnose and glucuronic acid in a ratio of 2:1 with 21% sulfate content and a molecular weight of 5.0 kDa. Structural properties were determined using desulfation and methylation analyses combined with infrared spectrum (IR), gas chromatography-mass spectrometer (GC-MS) and nuclear magnetic resonance (NMR). The results showed that UP2-1 was a type of ulvan composed of alternate 4-linked-α-L-rhamnose residues (→4)-α-L-Rha(1→) and 4-linked-β-D-glucouronoc acid residues. The sulfate groups were mainly present in the O-3 position of →4)-α-L-Rha(1→. Most (70%) of the rhamnose was sulfated. UP2-1 also had a small amount of →4)-α-L-Rha(1→ branch at the O-2 position of the →4)-α-L-Rha(1→. UP2-1 exhibited significant anticoagulant and immunomodulating activity in vitro. This study demonstrated that the green algae Ulothrix flacca, which is used as a food and traditional marine herb in China, could also be considered as a source of bioactive ulvan.
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Affiliation(s)
- Peipei Li
- Marine School, Ningbo University, 315000 Ningbo, China.
- Zhejiang Mariculture Research Institute, Zhoushan 316000, China.
| | - Songsong Wen
- Shandong Institute of Food and Drug Control, Jinan 250000, China.
| | - Kunlai Sun
- College of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316000, China.
| | - Yuqin Zhao
- College of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316000, China.
| | - Yin Chen
- College of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316000, China.
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285
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Kappelmann L, Krüger K, Hehemann JH, Harder J, Markert S, Unfried F, Becher D, Shapiro N, Schweder T, Amann RI, Teeling H. Polysaccharide utilization loci of North Sea Flavobacteriia as basis for using SusC/D-protein expression for predicting major phytoplankton glycans. ISME JOURNAL 2018; 13:76-91. [PMID: 30111868 PMCID: PMC6298971 DOI: 10.1038/s41396-018-0242-6] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 06/17/2018] [Accepted: 06/30/2018] [Indexed: 12/31/2022]
Abstract
Marine algae convert a substantial fraction of fixed carbon dioxide into various polysaccharides. Flavobacteriia that are specialized on algal polysaccharide degradation feature genomic clusters termed polysaccharide utilization loci (PULs). As knowledge on extant PUL diversity is sparse, we sequenced the genomes of 53 North Sea Flavobacteriia and obtained 400 PULs. Bioinformatic PUL annotations suggest usage of a large array of polysaccharides, including laminarin, α-glucans, and alginate as well as mannose-, fucose-, and xylose-rich substrates. Many of the PULs exhibit new genetic architectures and suggest substrates rarely described for marine environments. The isolates’ PUL repertoires often differed considerably within genera, corroborating ecological niche-associated glycan partitioning. Polysaccharide uptake in Flavobacteriia is mediated by SusCD-like transporter complexes. Respective protein trees revealed clustering according to polysaccharide specificities predicted by PUL annotations. Using the trees, we analyzed expression of SusC/D homologs in multiyear phytoplankton bloom-associated metaproteomes and found indications for profound changes in microbial utilization of laminarin, α-glucans, β-mannan, and sulfated xylan. We hence suggest the suitability of SusC/D-like transporter protein expression within heterotrophic bacteria as a proxy for the temporal utilization of discrete polysaccharides.
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Affiliation(s)
| | - Karen Krüger
- Max Planck Institute for Marine Microbiology, Bremen, Germany
| | - Jan-Hendrik Hehemann
- Max Planck Institute for Marine Microbiology, Bremen, Germany.,Zentrum für Marine Umweltwissenschaften, Bremen, Germany
| | - Jens Harder
- Max Planck Institute for Marine Microbiology, Bremen, Germany
| | - Stephanie Markert
- Pharmaceutical Biotechnology, University Greifswald, Greifswald, Germany.,Institute of Marine Biotechnology, Greifswald, Germany
| | - Frank Unfried
- Pharmaceutical Biotechnology, University Greifswald, Greifswald, Germany.,Institute of Marine Biotechnology, Greifswald, Germany
| | - Dörte Becher
- Institute for Microbiology, University Greifswald, Greifswald, Germany
| | | | - Thomas Schweder
- Pharmaceutical Biotechnology, University Greifswald, Greifswald, Germany. .,Institute of Marine Biotechnology, Greifswald, Germany.
| | - Rudolf I Amann
- Max Planck Institute for Marine Microbiology, Bremen, Germany.
| | - Hanno Teeling
- Max Planck Institute for Marine Microbiology, Bremen, Germany.
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286
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Kuznetsova TA, Persiyanova EV, Ermakova SP, Khotimchenko MY, Besednova NN. The Sulfated Polysaccharides of Brown Algae and Products of Their Enzymatic Transformation as Potential Vaccine Adjuvants. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300837] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The review is devoted to critical analysis of literature data, deal with effects and mechanisms of action of sulfated polysaccharides (PSs) – fucoidans from brown algae and products of their enzymatic transformation as potential adjuvants for enhancement of anti-infective and antitumor immune response. Numerous experimental data indicate that sulfated PSs demonstrate properties of vaccine adjuvants. Application perspectiveness of fucoidans as vaccine adjuvants is defined by their high biocompatibility, low-toxicity, safety and good tolerance by macroorganism, and also mechanisms of their immunomodulatory action. In particular, fucoidans are agonists of receptors of innate immunity and strong inducers of cellular and humoral immune response. At presenting the data of structural - functional interrelations, attention focused to the defining role of degree of sulfation, uronic acids and polyphenols contents, and also molecular mass in actions of fucoidans to innate and adaptive immunity cells. Insufficiency of literary data on studying of correlation of structure – physicochemical characteristics with adjuvanticities of the sulfated PSs, and also the problem of standardization of their active fractions are noted. Special attention is paid to the analysis of immunomodulatory and adjuvant activity of fucoidan oligosaccharides. Presented here results of experimental trial indicate that, despite the difficulties due to preparation of highly purified structurally characterized fractions and complex structure of fucoidans, these substances can be used as safe and effective adjuvants in vaccines against various pathogens including viruses, and also in antitumor vaccines.
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Affiliation(s)
- Tatyana A. Kuznetsova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
- Far Eastern Federal University, School of Biomedicine, bldg. M25 FEFU Campus, Ajax Bay, Russky Isl., 690922 Vladivostok, Russian Federation
| | - Elena V. Persiyanova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
| | - Svetlana P. Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Pr. 100-letya Vladivostoka 159, 690022, Vladivostok, Russian Federation
| | - Maxim Yu. Khotimchenko
- Far Eastern Federal University, School of Biomedicine, bldg. M25 FEFU Campus, Ajax Bay, Russky Isl., 690922 Vladivostok, Russian Federation
| | - Natalya N. Besednova
- Federal State Budgetary Scientific Institution «Research Somov Institute of Epidemiology and Microbiology», Sel'skaya street, 1, 690087, Vladivostok, Russian Federation
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287
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Garcia-Vaquero M, Rajauria G, Tiwari B, Sweeney T, O'Doherty J. Extraction and Yield Optimisation of Fucose, Glucans and Associated Antioxidant Activities from Laminaria digitata by Applying Response Surface Methodology to High Intensity Ultrasound-Assisted Extraction. Mar Drugs 2018; 16:E257. [PMID: 30061548 PMCID: PMC6117709 DOI: 10.3390/md16080257] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Accepted: 07/26/2018] [Indexed: 11/30/2022] Open
Abstract
The objectives of this study were to employ response surface methodology (RSM) to investigate and optimize the effect of ultrasound-assisted extraction (UAE) variables, temperature, time and amplitude on the yields of polysaccharides (fucose and total glucans) and antioxidant activities (ferric reducing antioxidant power (FRAP) and 1,1-diphenyl-2-picryl-hydrazyl radical scavenging activity (DPPH)) from Laminariadigitata, and to explore the suitability of applying the optimum UAE conditions for L.digitata to other brown macroalgae (L.hyperborea and Ascophyllumnodosum). The RSM with three-factor, four-level Box-Behnken Design (BBD) was used to study and optimize the extraction variables. A second order polynomial model fitted well to the experimental data with R² values of 0.79, 0.66, 0.64, 0.73 for fucose, total glucans, FRAP and DPPH, respectively. The UAE parameters studied had a significant influence on the levels of fucose, FRAP and DPPH. The optimised UAE conditions (temperature = 76 °C, time = 10 min and amplitude = 100%) achieved yields of fucose (1060.7 ± 70.6 mg/100 g dried seaweed (ds)), total glucans (968.6 ± 13.3 mg/100 g ds), FRAP (8.7 ± 0.5 µM trolox/mg freeze-dried extract (fde)) and DPPH (11.0 ± 0.2%) in L.digitata. Polysaccharide rich extracts were also attained from L.hyperborea and A. nodosum with variable results when utilizing the optimum UAE conditions for L.digitata.
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Affiliation(s)
- Marco Garcia-Vaquero
- School of Veterinary Medicine, Veterinary Sciences Centre, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Gaurav Rajauria
- School of Agriculture and Food Science, University College Dublin, Lyons Research Farm, Celbridge, Co., Kildare W23 ENY2, Ireland.
| | - Brijesh Tiwari
- Department of Food Biosciences, TEAGASC, Food Research Centre, Ashtown, Dublin 15, KN3K, Ireland.
| | - Torres Sweeney
- School of Veterinary Medicine, Veterinary Sciences Centre, University College Dublin, Belfield, Dublin 4, Ireland.
| | - John O'Doherty
- School of Agriculture and Food Science, University College Dublin, Lyons Research Farm, Celbridge, Co., Kildare W23 ENY2, Ireland.
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288
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Wang B, Xie N, Li B. Influence of peptide characteristics on their stability, intestinal transport, and in vitro bioavailability: A review. J Food Biochem 2018; 43:e12571. [PMID: 31353489 DOI: 10.1111/jfbc.12571] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 01/30/2018] [Accepted: 03/02/2018] [Indexed: 11/29/2022]
Abstract
In recent years, large amounts of peptides have been purified and characterized from food protein hydrolysates. Many of these peptides have been demonstrated to be of potential application as health-improving ingredients against plenty of disease conditions, such as cancer, inflammation, and cardiovascular disease. The real efficacy of functional application of these peptides depends on their stability, transport, and bioavailability in target tissues, which in turn depends on the peptides characteristics. Therefore, the characteristic-function parameters are crucial for peptides using as functional agents. This review article intends to summarize the effects of peptide characteristics, including molecular weight, charge and hydrophobicity, on their stability, intestinal transport, and in vitro bioavailability. PRACTICAL APPLICATIONS: In the near future, bioactive peptides will play important roles in the area of functional foods and pharmacy. However, the gastrointestinal digestion and transport usually restrict their bioavailability in vivo. Understanding the relationships between peptide characteristics and their digestion stability, bioavailability may provide guidance and theoretical basis for the further application of bioactive peptides.
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Affiliation(s)
- Bo Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,School of Food Science and Engineering, South China University of Technology, Guangzhou, China.,South China Institute of Collaborative Innovation, Dongguan, China
| | - Ningning Xie
- Institute of Agro-Products Processing, Research of Anhui Academy of Agricultural Sciences, Hefei, China
| | - Bo Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Key Laboratory of Functional Dairy, Ministry of Education, Beijing, China
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289
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Catarino MD, Silva AMS, Cardoso SM. Phycochemical Constituents and Biological Activities of Fucus spp. Mar Drugs 2018; 16:E249. [PMID: 30060505 PMCID: PMC6117670 DOI: 10.3390/md16080249] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 07/20/2018] [Accepted: 07/23/2018] [Indexed: 12/27/2022] Open
Abstract
Seaweeds are known to be a good supply of key nutrients including carbohydrates, protein, minerals, polyunsaturated lipids, as well as several other health-promoting compounds capable of acting on a wide spectrum of disorders and/or diseases. While these marine macroalgae are deeply rooted in the East Asian culture and dietary habits, their major application in Western countries has been in the phycocolloid industry. This scenario has however been gradually changing, since seaweed consumption is becoming more common worldwide. Among the numerous edible seaweeds, members of the genus Fucus have a high nutritional value and are considered good sources of dietary fibers and minerals, especially iodine. Additionally, their wealth of bioactive compounds such as fucoidan, phlorotannins, fucoxanthin and others make them strong candidates for multiple therapeutic applications (e.g., antioxidant, anti-inflammatory, anti-tumor, anti-obesity, anti-coagulant, anti-diabetes and others). This review presents an overview of the nutritional and phytochemical composition of Fucus spp., and their claimed biological activities, as well as the beneficial effects associated to their consumption. Furthermore, the use of Fucus seaweeds and/or their components as functional ingredients for formulation of novel and enhanced foods is also discussed.
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Affiliation(s)
- Marcelo D Catarino
- Department of Chemistry & Organic Chemistry, Natural Products and Food Stuffs Research Unit (QOPNA), University of Aveiro, Aveiro 3810-193, Portugal.
| | - Artur M S Silva
- Department of Chemistry & Organic Chemistry, Natural Products and Food Stuffs Research Unit (QOPNA), University of Aveiro, Aveiro 3810-193, Portugal.
| | - Susana M Cardoso
- Department of Chemistry & Organic Chemistry, Natural Products and Food Stuffs Research Unit (QOPNA), University of Aveiro, Aveiro 3810-193, Portugal.
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290
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Chang CC, Cheng JJ, Lee IJ, Lu MK. Purification, structural elucidation, and anti-inflammatory activity of xylosyl galactofucan from Armillaria mellea. Int J Biol Macromol 2018; 114:584-591. [DOI: 10.1016/j.ijbiomac.2018.02.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/02/2018] [Accepted: 02/06/2018] [Indexed: 01/22/2023]
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291
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Lahrsen E, Schoenfeld AK, Alban S. Size-dependent pharmacological activities of differently degraded fucoidan fractions from Fucus vesiculosus. Carbohydr Polym 2018; 189:162-168. [PMID: 29580394 DOI: 10.1016/j.carbpol.2018.02.035] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 02/08/2018] [Accepted: 02/11/2018] [Indexed: 12/15/2022]
Abstract
Fucose-containing sulfated glycans (syn. fucoidans) from brown algae exhibit a wide range of bioactivities and are therefore considered promising candidates for health-supporting and medical applications. In this study, we investigated the pharmacological activities of fucoidan from Fucus vesiculosus and 18 gradually depolymerized fractions, which were obtained by hydrothermal and H2O2 treatment, respectively. All the activities decreased with decreasing molecular mass (Mw) but to a different extent resulting in some modified pharmacological profiles in dependence on the Mw as well as on the degradation method. H2O2 treatment was not only more efficient, simpler and cheaper than hydrothermal degradation, but also led to superior activity profiles and additionally eliminated co-extracted contaminants. Compared to heparin, the prime example of biologically active sulfated glycans, evenly sized H2O2 fractions exhibited considerable effects being relevant for anti-inflammatory activity, however only negligible anticoagulant activity and FXII activating potency. Due to their improved biopharmaceutical characteristics and favorable activities, degraded fucoidan fractions are worth to be further investigated as anti-inflammatory and anticomplementary agents.
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Affiliation(s)
- Eric Lahrsen
- Pharmaceutical Institute, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany.
| | | | - Susanne Alban
- Pharmaceutical Institute, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany.
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292
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Wang ZJ, Zheng L, Yang JM, Kang Y, Park YD. Proteomic analyses for profiling regulated proteins/enzymes by Fucus vesiculosus fucoidan in B16 melanoma cells: A combination of enzyme kinetics functional study. Int J Biol Macromol 2018; 112:667-674. [PMID: 29408614 DOI: 10.1016/j.ijbiomac.2018.02.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 01/25/2018] [Accepted: 02/02/2018] [Indexed: 12/19/2022]
Abstract
Fucoidans are complex sulfated polysaccharides that have a wide range of biological activities. Previously, we reported the various effects of Fucus vesiculosus fucoidan on tyrosinase and B16 melanoma cells. In this study, to identify fucoidan-targeted proteins in B16 melanoma cells, we performed a proteomics study and integrated enzyme kinetics. We detected 19 candidate proteins dysregulated by fucoidan treatment. Among the probed proteins, the enzyme kinetics of two candidate enzymes, namely lactate dehydrogenase (LDH) as an upregulated protein and superoxide dismutase (SOD) as a downregulated enzyme, were determined. The enzyme kinetics results showed that Fucus vesiculosus fucoidan significantly inhibited LDH catalytic function while it did not affect SOD activity even at a high dose, while only slightly decreased activity (up to 10%) at a low dose. Based on our previous and present observations, fucoidan could inhibit B16 melanoma cells growth via regulating proteins/enzymes expression levels such as LDH and SOD known as cell survival biomarkers. Interestingly, both expression level and enzyme catalytic activity of LDH were regulated by fucoidan, which could directly induce the apoptotic effect on B16 melanoma cells along with SOD downregulation. This study highlights how combining proteomics with enzyme kinetics can yield valuable insights into fucoidan targets.
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Affiliation(s)
- Zhi-Jiang Wang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, PR China
| | - Li Zheng
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, PR China
| | - Jun-Mo Yang
- Department of Dermatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul 135-710, Republic of Korea
| | - Yani Kang
- School of Biomedical Engineering, Bio-ID Center, Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, PR China.
| | - Yong-Doo Park
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, PR China; Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, PR China; Department of Dermatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul 135-710, Republic of Korea.
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293
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Menezes MM, Nobre LTDB, Rossi GR, Almeida-Lima J, Melo-Silveira RF, Franco CRC, Trindade ES, Nader HB, Rocha HAO. A low-molecular-weight galactofucan from the seaweed, Spatoglossum schröederi, binds fibronectin and inhibits capillary-like tube formation in vitro. Int J Biol Macromol 2018; 111:1067-1075. [PMID: 29366897 DOI: 10.1016/j.ijbiomac.2018.01.119] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 12/13/2017] [Accepted: 01/17/2018] [Indexed: 01/13/2023]
Abstract
A low-molecular-weight (LMW) heterofucan (designated fucan B) was obtained from the brown seaweed, Spatoglossum schröederi, and its activity as an inhibitor of capillary-like tube formation by endothelial cells (ECs) was analyzed. Chemical, infrared and electrophoretic analyses confirmed the identity of fucan B. In contrast to other LMW fucans, fucan B (0.012-0.1 mg/mL) inhibited ECs capillary-like tube formation in a concentration-dependent manner. In addition, fucan B (0.01-0.05 mg/mL) did not affect ECs proliferation. Fucan B also inhibited ECs migration on a fibronectin-coated surface, but not on laminin- or collagen-coated surfaces. Biotinylated fucan B was used as a probe to identify its localization. Confocal microscopy experiments revealed that biotinylated fucan did not bind to the cell surface, but rather only to fibronectin. Our findings suggest that fucan B inhibits ECs capillary-like tube formation and migration by binding directly to fibronectin and blocking fibronectin sites recognized by cell surface ligands. However, further studies are needed to evaluate the in vivo effects of fucan B.
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Affiliation(s)
- Maira Maria Menezes
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN, Brazil
| | - Leonardo Thiago Duarte Barreto Nobre
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN, Brazil; Disciplina de Biologia Molecular, Universidade Federal de São Paulo, São Paulo-SP, Brazil
| | | | - Jailma Almeida-Lima
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN, Brazil
| | - Raniere Fagundes Melo-Silveira
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN, Brazil
| | | | | | - Helena Bonciani Nader
- Disciplina de Biologia Molecular, Universidade Federal de São Paulo, São Paulo-SP, Brazil
| | - Hugo Alexandre Oliveira Rocha
- Laboratório de Biotecnologia de Polímeros Naturais (BIOPOL), Departamento de Bioquímica, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte-RN, Brazil.
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294
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Zhao D, Xu J, Xu X. Bioactivity of fucoidan extracted from Laminaria japonica using a novel procedure with high yield. Food Chem 2018; 245:911-918. [PMID: 29287459 DOI: 10.1016/j.foodchem.2017.11.083] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 09/27/2017] [Accepted: 11/21/2017] [Indexed: 11/23/2022]
Abstract
Due to antitumor and antioxidant activities, there has been increasing interest in fucoidans, sulfated polysaccharides, from brown algae. Currently, the classic hot water extraction and acid extraction are time-consuming, and can cause the partial cleavage of sulfate esters, leading to bioactivity loss. The present study developed a novel process for extracting fucoidans from Laminaria japonica with 0.5% ethylenediaminetetraacetic acid at 70 °C. Crude fucoidans (CFs) obtained with a yield (∼16%) was purified to different fractions of F1, F2 and F3. The fractions displayed similar anticancer activity against Hela cells. Due to the differences in sulfate content, molar ratio of sulfate to fucose and monosaccharide composition, F1 and F2 exhibited stronger antioxidant ability than CFs and F3. This novel extraction provides an efficient procedure for extracting fucoidans from brown seaweeds with high extraction yield and removing pigments with one single step.
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Affiliation(s)
- Dong Zhao
- Biochemical Engineering Research Centre, School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui Province 243032, PR China; College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Jian Xu
- Biochemical Engineering Research Centre, School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui Province 243032, PR China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Xia Xu
- Biochemical Engineering Research Centre, School of Chemistry and Chemical Engineering, Anhui University of Technology, Ma'anshan, Anhui Province 243032, PR China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
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295
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Yadav P, Singh SP, Rengan AK, Shanavas A, Srivastava R. Gold laced bio-macromolecules for theranostic application. Int J Biol Macromol 2018; 110:39-53. [DOI: 10.1016/j.ijbiomac.2017.10.124] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/26/2017] [Accepted: 10/18/2017] [Indexed: 02/07/2023]
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296
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Chaves Filho GP, de Sousa AFG, Câmara RBG, Rocha HAO, de Medeiros SRB, Moreira SMG. Genotoxicity and osteogenic potential of sulfated polysaccharides from Caulerpa prolifera seaweed. Int J Biol Macromol 2018; 114:565-571. [PMID: 29578018 DOI: 10.1016/j.ijbiomac.2018.03.132] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 03/06/2018] [Accepted: 03/19/2018] [Indexed: 12/27/2022]
Abstract
Marine algae are sources of novel bioactive molecules and present a great potential for biotechnological and biomedical applications. Although green algae are the least studied type of seaweed, several of their biological activities have already been described. Here, we investigated the osteogenic potential of Sulfated Polysaccharide (SP)-enriched samples extracted from the green seaweed Caulerpa prolifera on human mesenchymal stem cells isolated from Wharton jelly (hMSC-WJ). In addition, the potential genotoxicity of these SPs was determined by cytokinesis-block micronucleus (CBMN) assay. SP-enriched samples did not show significant cytotoxicity towards hMSCs-WJ at a concentration of up to 10μg/mL, and after 72h of exposure. SP enrichment also significantly increased alkaline phosphatase (ALP) activity, promoting calcium accumulation in the extracellular matrix. Among the SP-enriched samples, the CP0.5 subfraction (at 5μg/mL) presented the most promising results. In this sample, ALP activity was increased approximately by 60%, and calcium accumulation was approximately 6-fold above the negative control, indicating high osteogenic potential. This subfraction also proved to be non-genotoxic, according to the CBMN assay, as it did not induce micronuclei. The results of this study highlight, for the first time, the potential of these SPs for the development of new therapies for bone regeneration.
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297
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Gora AH, Sahu NP, Sahoo S, Rehman S, Ahmad I, Agarwal D, Dar SA, Rasool SI. Metabolic and haematological responses of Labeo rohita to dietary fucoidan. JOURNAL OF APPLIED ANIMAL RESEARCH 2018. [DOI: 10.1080/09712119.2018.1456442] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Adnan Hussain Gora
- Division of Marine Biotechnology, Madras Research Centre of Central Marine Fisheries Research Institute, Chennai, India
| | - Narottam Prasad Sahu
- Division of Fish Nutrition Biochemistry and Physiology, Central Institute of Fisheries Education, Mumbai, India
| | - Sujata Sahoo
- Division of Fish Nutrition Biochemistry and Physiology, Central Institute of Fisheries Education, Mumbai, India
| | - Saima Rehman
- Division of Marine Biotechnology, Madras Research Centre of Central Marine Fisheries Research Institute, Chennai, India
| | - Irshad Ahmad
- Division of Aquaculture, Central Institute of Fisheries Education, Mumbai, India
| | - Deepak Agarwal
- Division of Fish Genetics and Biotechnology, Central Institute of Fisheries Education, Mumbai, India
| | - Showkat Ahmad Dar
- Division of Fish Nutrition Biochemistry and Physiology, Central Institute of Fisheries Education, Mumbai, India
| | - Sheikh Irfan Rasool
- Division of Fish Nutrition Biochemistry and Physiology, Central Institute of Fisheries Education, Mumbai, India
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298
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Usoltseva RV, Anastyuk SD, Ishina IA, Isakov VV, Zvyagintseva TN, Thinh PD, Zadorozhny PA, Dmitrenok PS, Ermakova SP. Structural characteristics and anticancer activity in vitro of fucoidan from brown alga Padina boryana. Carbohydr Polym 2018; 184:260-268. [PMID: 29352918 DOI: 10.1016/j.carbpol.2017.12.071] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/26/2017] [Accepted: 12/27/2017] [Indexed: 01/23/2023]
Abstract
The sulfated and acetylated fucoidan fraction, containing fucose, galactose, mannose, glucose and uronic acid residues, was isolated from the brown alga Padina boryana. The structure of galactofucan part was studied after different modifications by NMR spectroscopy and mass spectrometry. It was shown that galactofucan contained the main chain of alternating 1,4-linked α-l-fucopyranose and 1,3-linked β-d-Galactopyranose. Single fucose residues were found as branches at C4 of galactose residues. Also, fucoidan contained 1,3- or 1,4-linked Fuc-Fuc and Gal-Gal fragments. The sulfate groups occupied positions C2, C3 and C4 of both fucose and galactose residues, which was shown by tandem mass spectrometry of fragments, labeled with heavy-oxygen. The anticancer effect of native and modified fucoidan fractions was studied in vitro on the colorectal carcinoma cells DLD-1 and HCT-116. All fucoidans had no cytotoxicity under 400 μg/mL and inhibited colony formation of cancer cells at concentration of 200 μg/mL.
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Affiliation(s)
- Roza V Usoltseva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 100 Let Vladivostoku Prosp., 159/2, 690022, Vladivostok, Russian Federation.
| | - Stanislav D Anastyuk
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 100 Let Vladivostoku Prosp., 159/2, 690022, Vladivostok, Russian Federation
| | - Irina A Ishina
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 100 Let Vladivostoku Prosp., 159/2, 690022, Vladivostok, Russian Federation
| | - Vladimir V Isakov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 100 Let Vladivostoku Prosp., 159/2, 690022, Vladivostok, Russian Federation
| | - Tatiana N Zvyagintseva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 100 Let Vladivostoku Prosp., 159/2, 690022, Vladivostok, Russian Federation
| | - Pham Duc Thinh
- Nhatrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, 02 Hung Vuong Street, Nhatrang, Viet Nam
| | - Pavel A Zadorozhny
- Institute of Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 100 Let Vladivostoku Prosp., 159D, 690022, Vladivostok, Russian Federation
| | - Pavel S Dmitrenok
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 100 Let Vladivostoku Prosp., 159/2, 690022, Vladivostok, Russian Federation
| | - Svetlana P Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 100 Let Vladivostoku Prosp., 159/2, 690022, Vladivostok, Russian Federation
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Tsai LC, Tsai ML, Lu KY, Mi FL. Synthesis and evaluation of antibacterial and anti-oxidant activity of small molecular chitosan–fucoidan conjugate nanoparticles. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3341-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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300
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Zeng HY, Huang YC. Basic fibroblast growth factor released from fucoidan-modified chitosan/alginate scaffolds for promoting fibroblasts migration. JOURNAL OF POLYMER RESEARCH 2018. [DOI: 10.1007/s10965-018-1476-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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