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Zayed A, Al-Saedi DA, Mensah EO, Kanwugu ON, Adadi P, Ulber R. Fucoidan's Molecular Targets: A Comprehensive Review of Its Unique and Multiple Targets Accounting for Promising Bioactivities Supported by In Silico Studies. Mar Drugs 2023; 22:29. [PMID: 38248653 PMCID: PMC10820140 DOI: 10.3390/md22010029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024] Open
Abstract
Fucoidan is a class of multifunctional polysaccharides derived from marine organisms. Its unique and diversified physicochemical and chemical properties have qualified them for potential and promising pharmacological uses in human diseases, including inflammation, tumors, immunity disorders, kidney diseases, and diabetes. Physicochemical and chemical properties are the main contributors to these bioactivities. The previous literature has attributed such activities to its ability to target key enzymes and receptors involved in potential disease pathways, either directly or indirectly, where the anionic sulfate ester groups are mainly involved in these interactions. These findings also confirm the advantageous pharmacological uses of sulfated versus non-sulfated polysaccharides. The current review shall highlight the molecular targets of fucoidans, especially enzymes, and the subsequent responses via either the upregulation or downregulation of mediators' expression in various tissue abnormalities. In addition, in silico studies will be applied to support the previous findings and show the significant contributors. The current review may help in understanding the molecular mechanisms of fucoidan. Also, the findings of this review may be utilized in the design of specific oligomers inspired by fucoidan with the purpose of treating life-threatening human diseases effectively.
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Affiliation(s)
- Ahmed Zayed
- Institute of Bioprocess Engineering, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, Gottlieb-Daimler-Straße 49, 67663 Kaiserslautern, Germany
- Department of Pharmacognosy, College of Pharmacy, Tanta University, El-Guish Street (Medical Campus), Tanta 31527, Egypt
| | - Dalal A. Al-Saedi
- Department of Biochemistry, Faculty of Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Emmanuel Ofosu Mensah
- Faculty of Ecotechnology, ITMO University, Lomonosova Street 9, Saint Petersburg 191002, Russia;
| | - Osman Nabayire Kanwugu
- Institute of Chemical Engineering, Ural Federal University, Mira Street 28, Yekaterinburg 620002, Russia;
- ARC Centre of Excellence in Synthetic Biology, School of Natural Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Parise Adadi
- Department of Food Science, University of Otago, Dunedin 9054, New Zealand;
| | - Roland Ulber
- Institute of Bioprocess Engineering, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, Gottlieb-Daimler-Straße 49, 67663 Kaiserslautern, Germany
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Dörschmann P, Thalenhorst T, Seeba C, Tischhöfer MT, Neupane S, Roider J, Alban S, Klettner A. Comparison of Fucoidans from Saccharina latissima Regarding Age-Related Macular Degeneration Relevant Pathomechanisms in Retinal Pigment Epithelium. Int J Mol Sci 2023; 24:7939. [PMID: 37175646 PMCID: PMC10178501 DOI: 10.3390/ijms24097939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/16/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Fucoidans from brown algae are described as anti-inflammatory, antioxidative, and antiangiogenic. We tested two Saccharina latissima fucoidans (SL-FRO and SL-NOR) regarding their potential biological effects against age-related macular degeneration (AMD). Primary porcine retinal pigment epithelium (RPE), human RPE cell line ARPE-19, and human uveal melanoma cell line OMM-1 were used. Cell survival was assessed in tetrazolium assay (MTT). Oxidative stress assays were induced with erastin or H2O2. Supernatants were harvested to assess secreted vascular endothelial growth factor A (VEGF-A) in ELISA. Barrier function was assessed by measurement of trans-epithelial electrical resistance (TEER). Protectin (CD59) and retinal pigment epithelium-specific 65 kDa protein (RPE65) were evaluated in western blot. Polymorphonuclear elastase and complement inhibition assays were performed. Phagocytosis of photoreceptor outer segments was tested in a fluorescence assay. Secretion and expression of proinflammatory cytokines were assessed with ELISA and real-time PCR. Fucoidans were chemically analyzed. Neither toxic nor antioxidative effects were detected in ARPE-19 or OMM-1. Interleukin 8 gene expression was slightly reduced by SL-NOR but induced by SL-FRO in RPE. VEGF secretion was reduced in ARPE-19 by SL-FRO and in RPE by both fucoidans. Polyinosinic:polycytidylic acid induced interleukin 6 and interleukin 8 secretion was reduced by both fucoidans in RPE. CD59 expression was positively influenced by fucoidans, and they exhibited a complement and elastase inhibitory effect in cell-free assay. RPE65 expression was reduced by SL-NOR in RPE. Barrier function of RPE was transiently reduced. Phagocytosis ability was slightly reduced by both fucoidans in primary RPE but not in ARPE-19. Fucoidans from Saccharina latissima, especially SL-FRO, are promising agents against AMD, as they reduce angiogenic cytokines and show anti-inflammatory and complement inhibiting properties; however, potential effects on gene expression and RPE functions need to be considered for further research.
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Affiliation(s)
- Philipp Dörschmann
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany (A.K.)
| | - Tabea Thalenhorst
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany (A.K.)
| | - Charlotte Seeba
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany (A.K.)
| | | | - Sandesh Neupane
- Wyatt Technology Europe GmbH, Hochstrasse 12a, 56307 Dernbach, Germany
| | - Johann Roider
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany (A.K.)
| | - Susanne Alban
- Pharmaceutical Institute, University of Kiel, Gutenbergstr. 76, 24118 Kiel, Germany
| | - Alexa Klettner
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany (A.K.)
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Wang L, Oh JY, Yang HW, Hyun J, Ahn G, Fu X, Xu J, Gao X, Cha SH, Jeon YJ. Protective Effect of Sargassum fusiforme Fucoidan against Ethanol-Induced Oxidative Damage in In Vitro and In Vivo Models. Polymers (Basel) 2023; 15:polym15081912. [PMID: 37112059 PMCID: PMC10145573 DOI: 10.3390/polym15081912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 04/11/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Our previous studies have evaluated the bioactivities of a fucoidan isolated from Sargassum fusiforme (SF-F). To further investigate the health benefit of SF-F, in the present study, the protective effect of SF-F against ethanol (EtOH)-induced oxidative damage has been evaluated in in vitro and in vivo models. SF-F effectively improved the viability of EtOH-treated Chang liver cells by suppressing apoptosis. In addition, the in vivo test results indicate that SF-F significantly and dose-dependently increased the survival rate of zebrafish treated with EtOH. Further research results show that this action works through decreasing cell death via reduced lipid peroxidation by scavenging intracellular reactive oxygen species in EtOH-stimulated zebrafish. These results indicate that SF-F effectively protected Chang liver cells and zebrafish against EtOH-induced oxidative damage and suggest the potential of SF-F to be used as an ingredient in the functional food industry.
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Affiliation(s)
- Lei Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Jae-Young Oh
- Food Safety and Processing Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Hye-Won Yang
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Jimin Hyun
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Ginnae Ahn
- Department of Marine Bio Food Science, Chonnam National University, Yeosu 59626, Republic of Korea
| | - Xiaoting Fu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Jiachao Xu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xin Gao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Seon-Heui Cha
- Department of Marine Bio and Medical Sciences, Hanseo University, Seosan-si 31962, Republic of Korea
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Republic of Korea
- Marine Science Institute, Jeju National University, Jeju 63333, Republic of Korea
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Dörschmann P, Akkurt H, Kopplin G, Mikkelsen MD, Meyer AS, Roider J, Klettner A. Establishment of specific age-related macular degeneration relevant gene expression panels using porcine retinal pigment epithelium for assessing fucoidan bioactivity. Exp Eye Res 2023; 231:109469. [PMID: 37037364 DOI: 10.1016/j.exer.2023.109469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 03/24/2023] [Accepted: 04/06/2023] [Indexed: 04/12/2023]
Abstract
PURPOSE Age-related macular degeneration (AMD) is the leading cause of severe vision loss in industrialized nations. Important factors in pathogenesis are oxidative stress, inflammation, and, in the wet form of AMD, angiogenesis. Fucoidans, sulfated polysaccharides from brown algae, may have antioxidant, anti-inflammatory, and antiangiogenic effects. In this study, we established specific gene expression panels for inflammation, oxidative stress and angiogenesis in porcine retinal pigment epithelium (RPE), and investigated the effect of fucoidans on gene expression under different noxious agents. METHODS Primary porcine RPE cells cultured for at least 14 days were used. Using viability assays with tetrazolium bromide and real-time polymerase chain reaction of marker genes, positive controls were established for appropriate concentrations and exposure times of selected noxious agents (lipopolysaccharide (LPS), H2O2, CoCl2). Three different AMD relevant gene panels specific for porcine RPE for inflammation, oxidative stress, and angiogenesis were established, and the influence of fucoidans (mainly Fucus vesiculosus; FV) on gene expression was investigated. RESULTS The following was shown by gene expression analyses: (1) Inflammation panel: Expression of 18 genes was affected under LPS (three days). Among them, LPS increased genes for interleukin 1 receptor 2, interleukin 8, cyclooxygenase-2 and vascular cell adhesion protein 1 expression which were diminished when FV was present. (2) Oxidative stress panel: Under stimulation of H2O2 (one day) and LPS (one day), expression of a total of 15 genes was affected. LPS induced increase in genes for superoxide dismutase-1, C-X-C motif chemokine 10, and CC chemokine ligand-5 expression was not detected when FV was present. (3) Angiogenesis panel: Under stimulation with CoCl2 (three days) expression of six genes was affected, with the increase of genes for angiopoietin 2, vascular endothelial growth factor receptor-1, and follistatin being diminished when FV was present. CONCLUSION Three specific gene expression panels for porcine RPE that map genes for three of the major pathological factors of AMD, inflammation, oxidative stress, and angiogenesis, were established. Further, we demonstrated that fucoidans can reduce stress related gene activation in all of these three major pathogenic pathways. This study is another indication that fucoidans can act on different pathomechanisms of AMD simultaneously, which provides further evidence for fucoidans as a possible drug for treatment and prevention of AMD.
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Affiliation(s)
- Philipp Dörschmann
- Kiel University, University Medical Center, Department of Ophthalmology, Arnold-Heller-Str. 3, Haus B2, 24105, Kiel, Germany.
| | - Hubeydullah Akkurt
- Kiel University, University Medical Center, Department of Ophthalmology, Arnold-Heller-Str. 3, Haus B2, 24105, Kiel, Germany
| | - Georg Kopplin
- Alginor ASA, Haraldsgata 162, 5525, Haugesund, Norway
| | | | - Anne S Meyer
- Technical University of Denmark, Søltofts Plads, 2800 Kgs. Lyngby, Denmark
| | - Johann Roider
- Kiel University, University Medical Center, Department of Ophthalmology, Arnold-Heller-Str. 3, Haus B2, 24105, Kiel, Germany
| | - Alexa Klettner
- Kiel University, University Medical Center, Department of Ophthalmology, Arnold-Heller-Str. 3, Haus B2, 24105, Kiel, Germany
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Dörschmann P, Seeba C, Thalenhorst T, Roider J, Klettner A. Anti-inflammatory properties of antiangiogenic fucoidan in retinal pigment epithelium cells. Heliyon 2023; 9:e15202. [PMID: 37123974 PMCID: PMC10130777 DOI: 10.1016/j.heliyon.2023.e15202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 05/02/2023] Open
Abstract
Age-related macular degeneration (AMD) is a multifactorial disease in which angiogenesis, oxidative stress and inflammation are important contributing factors. In this study, we investigated the anti-inflammatory effects of a fucoidan from the brown algae Fucus vesiculosus (FV) in primary porcine RPE cells. Inflammation was induced by lipopolysaccharide (LPS), polyinosinic:polycytidylic acid (Poly I:C), Pam2CSK4 (Pam), or tumor necrosis factor alpha (TNF-α). Cell viability was tested with thiazolyl blue tetrazolium bromide (MTT) test, barrier function by measuring transepithelial electric resistance (TEER), interleukin 6 (IL-6) and interleukin 8 (IL-8) secretion in ELISA, retinal pigment epithelium-specific 65 kDa protein (RPE65) and protectin (CD59) expression in Western blot, gene expression with quantitative polymerase chain reaction (qPCR) (IL6, IL8, MERTK, PIK3CA), and phagocytotic activity in a microscopic assay. FV fucoidan did not influence RPE cell viability. FV fucoidan reduced the Poly I:C proinflammatory cytokine secretion of IL-6 and IL-8. In addition, it decreased the expression of IL-6 and IL-8 in RT-PCR. LPS and TNF-α reduced the expression of CD59 in Western blot, this reduction was lost under FV fucoidan treatment. Also, LPS and TNF-α reduced the expression of visual cycle protein RPE65, this reduction was again lost under FV fucoidan treatment. Furthermore, the significant reduction of barrier function after Poly I:C stimulation is ameliorated by FV fucoidan. Concerning phagocytosis, however, the inflammation-induced reduction was not improved by FV fucoidan. FV and proinflammatory milieu did not relevantly influence phagocytosis relevant gene expression either. In conclusion, we show that fucoidan from FV can reduce proinflammatory stimulation in RPE induced by toll-like receptor 3 (TLR-3) activation and is of high interest as a potential compound for early AMD treatment.
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Hsieh CY, Lin JN, Kang TY, Wen YH, Yu SH, Wu CC, Wu HP. Otoprotective Effects of Fucoidan Reduce Cisplatin-Induced Ototoxicity in Mouse Cochlear UB/OC-2 Cells. Int J Mol Sci 2023; 24:ijms24043561. [PMID: 36834972 PMCID: PMC9959567 DOI: 10.3390/ijms24043561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/12/2023] Open
Abstract
Cisplatin is a widely used standard chemotherapy for various cancers. However, cisplatin treatment is associated with severe ototoxicity. Fucoidan is a complex sulfated polysaccharide mainly derived from brown seaweeds, and it shows multiple bioactivities such as antimicrobial, anti-inflammatory, anticancer, and antioxidant activities. Despite evidence of the antioxidant effects of fucoidan, research on its otoprotective effects remains limited. Therefore, the present study investigated the otoprotective effects of fucoidan in vitro using the mouse cochlear cell line UB/OC-2 to develop new strategies to attenuate cisplatin-induced ototoxicity. We quantified the cell membrane potential and analyzed regulators and cascade proteins in the apoptotic pathway. Mouse cochlear UB/OC-2 cells were pre-treated with fucoidan before cisplatin exposure. The effects on cochlear hair cell viability, mitochondrial function, and apoptosis-related proteins were determined via flow cytometry, Western blot analysis, and fluorescence staining. Fucoidan treatment reduced cisplatin-induced intracellular reactive oxygen species production, stabilized mitochondrial membrane potential, inhibited mitochondrial dysfunction, and successfully protected hair cells from apoptosis. Furthermore, fucoidan exerted antioxidant effects against oxidative stress by regulating the Nrf2 pathway. Therefore, we suggest that fucoidan may represent a potential therapeutic agent for developing a new otoprotective strategy.
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Affiliation(s)
- Cheng-Yu Hsieh
- Department of Otolaryngology, Head and Neck Surgery, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427213, Taiwan
| | - Jia-Ni Lin
- Department of Otolaryngology, Head and Neck Surgery, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427213, Taiwan
| | - Ting-Ya Kang
- Department of Otolaryngology, Head and Neck Surgery, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427213, Taiwan
| | - Yu-Hsuan Wen
- School of Medicine, Tzu Chi University, Hualien 970374, Taiwan
- Department of Otolaryngology, Head and Neck Surgery, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 970473, Taiwan
- Institute of Medical Sciences, Tzu Chi University, Hualien 970473, Taiwan
| | - Szu-Hui Yu
- Department of Music, Tainan University of Technology, Tainan 710302, Taiwan
| | - Chen-Chi Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100225, Taiwan
- Department of Medical Genetics, National Taiwan University Hospital, Taipei 100225, Taiwan
- Department of Medical Research, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu 300195, Taiwan
| | - Hung-Pin Wu
- Department of Otolaryngology, Head and Neck Surgery, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung 427213, Taiwan
- School of Medicine, Tzu Chi University, Hualien 970374, Taiwan
- Correspondence:
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Dörschmann P, Kopplin G, Roider J, Klettner A. Interaction of High-Molecular Weight Fucoidan from Laminaria hyperborea with Natural Functions of the Retinal Pigment Epithelium. Int J Mol Sci 2023; 24:2232. [PMID: 36768552 PMCID: PMC9917243 DOI: 10.3390/ijms24032232] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/12/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023] Open
Abstract
Fucoidans are polysaccharides and constituents of cell walls of brown algae such as Laminaria hyperborea (LH). They exhibit promising effects regarding age-related macular degeneration (AMD). However, the safety of this compound needs to be assured. The focus of this study lies on influences of an LH fucoidan on the retinal pigment epithelium (RPE). The high-molecular weight LH fucoidan Fuc1 was applied to primary porcine RPE cells, and a tetrazolium (MTT) cell viability assay was conducted. Further tests included a scratch assay to measure wound healing, Western blotting to measure expression of retinal pigment epithelium-specific 65 kDa protein (RPE65), as well as immunofluorescence to measure uptake of opsonized fluorescence beads into RPE cells. Lipopolysaccharide was used to proinflammatorily activate the RPE, and interleukin 6 (IL-6) and interleukin 8 (IL-8) secretion was measured. RPE/choroid cultures were used to assess vascular endothelial growth factor (VEGF) secretion. Real-time polymerase chain reaction (real-time PCR) was performed to detect the gene expression of 91 different genes in a specific porcine RPE gene array. Fuc1 slightly reduced wound healing, but did not influence cell viability, phagocytosis or RPE65 expression. Fuc1 lowered IL-6, IL-8 and VEGF secretion. Furthermore, Fuc1 did not change tested RPE genes. In conclusion, Fuc1 does not impair RPE cellular functions and shows antiangiogenic and anti-inflammatory activities, which indicates its safety and strengthens its suitability concerning ocular diseases.
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Affiliation(s)
- Philipp Dörschmann
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
| | - Georg Kopplin
- Alginor ASA, Haraldsgata 162, 5525 Haugesund, Norway
| | - Johann Roider
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
| | - Alexa Klettner
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
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Nagahawatta DP, Liyanage NM, Jayawardhana HHACK, Jayawardena TU, Lee HG, Heo MS, Jeon YJ. Eckmaxol Isolated from Ecklonia maxima Attenuates Particulate-Matter-Induced Inflammation in MH-S Lung Macrophage. Mar Drugs 2022; 20:766. [PMID: 36547913 PMCID: PMC9785775 DOI: 10.3390/md20120766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/02/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022] Open
Abstract
Airborne particulate matter (PM) originating from industrial processes is a major threat to the environment and health in East Asia. PM can cause asthma, collateral lung tissue damage, oxidative stress, allergic reactions, and inflammation. The present study was conducted to evaluate the protective effect of eckmaxol, a phlorotannin isolated from Ecklonia maxima, against PM-induced inflammation in MH-S macrophage cells. It was found that PM induced inflammation in MH-S lung macrophages, which was inhibited by eckmaxol treatment in a dose-dependent manner (21.0−84.12 µM). Eckmaxol attenuated the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) in PM-induced lung macrophages. Subsequently, nitric oxide (NO), prostaglandin E-2 (PGE-2), and pro-inflammatory cytokines (IL-1β, IL-6, and TNF-α) were downregulated. PM stimulated inflammation in MH-S lung macrophages by activating Toll-like receptors (TLRs), nuclear factor-kappa B (NF-κB), and mitogen-activated protein kinase (MAPK) pathways. Eckmaxol exhibited anti-inflammatory properties by suppressing the activation of TLRs, downstream signaling of NF-κB (p50 and p65), and MAPK pathways, including c-Jun N-terminal kinase (JNK) and p38. These findings suggest that eckmaxol may offer substantial therapeutic potential in the treatment of inflammatory diseases.
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Affiliation(s)
- D. P. Nagahawatta
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Jeju Self-Governing Province, Republic of Korea
| | - N. M. Liyanage
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Jeju Self-Governing Province, Republic of Korea
| | - H. H. A. C. K. Jayawardhana
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Jeju Self-Governing Province, Republic of Korea
| | - Thilina U. Jayawardena
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Jeju Self-Governing Province, Republic of Korea
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, Canada
| | - Hyo-Geun Lee
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Jeju Self-Governing Province, Republic of Korea
| | - Moon-Soo Heo
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Jeju Self-Governing Province, Republic of Korea
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Jeju Self-Governing Province, Republic of Korea
- Marine Science Institute, Jeju National University, Jeju 63333, Jeju Self-Governing Province, Republic of Korea
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Silva MMCL, Dos Santos Lisboa L, Paiva WS, Batista LANC, Luchiari AC, Rocha HAO, Camara RBG. Comparison of in vitro and in vivo antioxidant activities of commercial fucoidans from Macrocystis pyrifera, Undaria pinnatifida, and Fucus vesiculosus. Int J Biol Macromol 2022; 216:757-767. [PMID: 35870628 DOI: 10.1016/j.ijbiomac.2022.07.110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 07/04/2022] [Accepted: 07/15/2022] [Indexed: 12/28/2022]
Abstract
Antioxidants fucoidans from three seaweeds, Undaria pinnatifida (FUP), Macrocystis pyrifera (FMP) and Fucus vesiculosus (FFV) are sold commercially. However, it is unclear which fucoidan is the most potent antioxidant. Therefore, our objective was to compare the antioxidant activities of these fucoidans. For this purpose, six in vitro antioxidant tests were used, total antioxidant capacity, hydroxyl radical scavenging assay, ferrous and cupric chelating assay, reducing power and H2O2 scavenging assay. The data showed that the fucoidans had a low capacity to donate electrons, and a low capacity to chelate metals. The best activity obtained was in the scavenging of hydroxyl radical. When macrophages were exposed to H2O2 and fucoidans, MTT and live/dead assays showed that all fucoidans protected cells from oxidative damage. The survival rate of zebrafish embryos was significantly higher when exposed to H2O2 and fucoidans than H2O2 alone. In summary, the fucoidans evaluated were ranked according to their antioxidant activity as follows: FMP > FFV > FUP, and the results suggest that these fucoidans, mainly FMP, can be used in the formulation of medicines/foods.
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Affiliation(s)
- Maylla Maria Correia Leite Silva
- Graduate Program in Biochemistry and Molecular Biology, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, RN 59078-970, Brazil; Laboratory of Biotechnology of Natural Polymers (BIOPOL), Department of Biochemistry, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte 59078-970, Brazil.
| | - Lucas Dos Santos Lisboa
- Graduate Program in Biochemistry and Molecular Biology, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, RN 59078-970, Brazil; Laboratory of Biotechnology of Natural Polymers (BIOPOL), Department of Biochemistry, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte 59078-970, Brazil.
| | - Weslley Souza Paiva
- Laboratory of Biotechnology of Natural Polymers (BIOPOL), Department of Biochemistry, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte 59078-970, Brazil.
| | - Lucas Alighieri Neves Costa Batista
- Laboratory of Biotechnology of Natural Polymers (BIOPOL), Department of Biochemistry, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte 59078-970, Brazil.
| | - Ana Carolina Luchiari
- Department of Physiology and Behavior, Federal University of Rio Grande do Norte (UFRN), Natal, RN 59078-970, Brazil
| | - Hugo Alexandre Oliveira Rocha
- Graduate Program in Biochemistry and Molecular Biology, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, RN 59078-970, Brazil; Laboratory of Biotechnology of Natural Polymers (BIOPOL), Department of Biochemistry, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte 59078-970, Brazil.
| | - Rafael Barros Gomes Camara
- Graduate Program in Biochemistry and Molecular Biology, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, RN 59078-970, Brazil; Laboratory of Biotechnology of Natural Polymers (BIOPOL), Department of Biochemistry, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte 59078-970, Brazil; Multicampi School of Medical Sciences (EMCM/UFRN), Brazil
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Lewis LLM, Dörschmann P, Seeba C, Thalenhorst T, Roider J, Iloki Assanga SB, Ruiz JCG, Del Castillo Castro T, Rosas-Burgos EC, Plascencia-Jatomea M, Ezquerra Brauer JM, Klettner A. Properties of Cephalopod Skin Ommochromes to Inhibit Free Radicals, and the Maillard Reaction and Retino-Protective Mechanisms in Cellular Models Concerning Oxidative Stress, Angiogenesis, and Inflammation. Antioxidants (Basel) 2022; 11:antiox11081574. [PMID: 36009293 PMCID: PMC9404994 DOI: 10.3390/antiox11081574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022] Open
Abstract
Ommochromes are pigments of invertebrates that exhibit oxidative stress protection. The aim of this study was to investigate ommochromes extracted from cephalopod’s skin for their ability to inhibit age-related-macular degeneration (AMD)-related factors such as H2O2-induced and iron-dependent oxidative stress (ferroptosis and erastin), accumulation of advanced glycation end-products (AGEs), as well as vascular endothelial growth factor (VEGF), and inflammatory cytokines (interleukin 6 and interleukin 8) secretion. As cell systems, we used primary porcine retinal pigment epithelium (RPE), human retinal pigment epithelium cell line ARPE-19 and uveal melanoma cell line OMM-1. In vitro, ommochromes produced an antiglycation effect by the inhibition of fructosylation reaction. The ommochromes showed protective effects against erastin- induced cell death in ARPE-19. In addition, in long-term stimulation (7 days) ommochromes decreased constitutively secreted VEGF, as well as interleukin 6 and interleukin 8 induced by Poly I:C in primary RPE. No relevant effects were detected in OMM-1 cells. The effects are dependent on the cell system, time of exposition, and concentration. This substance is of interest for further research concerning age-related macular degeneration.
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Affiliation(s)
- Luján Lidianys María Lewis
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Sonora, Mexico
| | - Philipp Dörschmann
- Department of Ophthalmology, University of Kiel, University Medical Center, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
| | - Charlotte Seeba
- Department of Ophthalmology, University of Kiel, University Medical Center, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
| | - Tabea Thalenhorst
- Department of Ophthalmology, University of Kiel, University Medical Center, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
| | - Johann Roider
- Department of Ophthalmology, University of Kiel, University Medical Center, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
| | - Simon Bernard Iloki Assanga
- Department of Biological Chemical Sciences, Sonora University, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Sonora, Mexico
| | - Juan Carlos Gálvez Ruiz
- Department of Biological Chemical Sciences, Sonora University, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Sonora, Mexico
| | - Teresa Del Castillo Castro
- Department of Research on Polymers and Materials, Sonora University, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Sonora, Mexico
| | - Ema Carina Rosas-Burgos
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Sonora, Mexico
| | - Maribel Plascencia-Jatomea
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Sonora, Mexico
| | - Josafat Marina Ezquerra Brauer
- Departamento de Investigación y Posgrado en Alimentos, Universidad de Sonora, Blvd. Luis Encinas y Rosales S/N, Col. Centro, Hermosillo 83000, Sonora, Mexico
| | - Alexa Klettner
- Department of Ophthalmology, University of Kiel, University Medical Center, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
- Correspondence: ; Tel.: +49-431-500-24283
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11
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Devi G.V Y, Nagendra AH, Shenoy P S, Chatterjee K, Venkatesan J. Isolation and purification of fucoidan from Sargassum ilicifolium: Osteogenic differentiation potential in mesenchymal stem cells for bone tissue engineering. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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12
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Nagahawatta D, Liyanage N, Jayawardhana H, Lee HG, Jayawardena TU, Jeon YJ. Anti-Fine Dust Effect of Fucoidan Extracted from Ecklonia maxima Laves in Macrophages via Inhibiting Inflammatory Signaling Pathways. Mar Drugs 2022; 20:413. [PMID: 35877707 PMCID: PMC9319110 DOI: 10.3390/md20070413] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/14/2022] [Accepted: 06/20/2022] [Indexed: 11/23/2022] Open
Abstract
Brown seaweeds contain fucoidan, which has numerous biological activities. Here, the anti-fine-dust activity of fucoidan extracted from Ecklonia maxima, an abundant brown seaweed from South Africa, was explored. Fourier transmittance infrared spectroscopy, high-performance anion-exchange chromatography with pulsed amperometric detection analysis of the monosaccharide content, and nuclear magnetic resonance were used for the structural characterization of the polysaccharides. The toll-like receptor (TLR)-mediated nuclear factor kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) signaling pathways were evaluated. The results revealed that E. maxima purified leaf fucoidan fraction 7 (EMLF7), which contained the highest sulfate content, showed the best anti-inflammatory activity by attenuating the TLR-mediated NF-κB/MAPK protein expressions in the particulate matter-stimulated cells. This was solidified by the successful reduction of Prostaglandin E2, NO, and pro-inflammatory cytokines, such as TNF-α, IL-6, and IL-1β. The current findings confirm the anti-inflammatory activity of EMLF7, as well as the potential use of E. maxima as a low-cost fucoidan source due to its abundance. This suggests its further application as a functional ingredient in consumer products.
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Affiliation(s)
- D.P. Nagahawatta
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (N.M.L.); (H.H.A.C.K.J.); (H.-G.L.)
| | - N.M. Liyanage
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (N.M.L.); (H.H.A.C.K.J.); (H.-G.L.)
| | - H.H.A.C.K. Jayawardhana
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (N.M.L.); (H.H.A.C.K.J.); (H.-G.L.)
| | - Hyo-Geun Lee
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (N.M.L.); (H.H.A.C.K.J.); (H.-G.L.)
| | - Thilina U. Jayawardena
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (N.M.L.); (H.H.A.C.K.J.); (H.-G.L.)
- Department of Cell Biology & Anatomy, Arnie Charbonneau Cancer and Alberta Children’s Hospital Research Institutes, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Korea; (D.P.N.); (N.M.L.); (H.H.A.C.K.J.); (H.-G.L.)
- Marine Science Institute, Jeju National University, Jeju 63333, Korea
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13
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Discovering the Potential of Natural Antioxidants in Age-Related Macular Degeneration: A Review. Pharmaceuticals (Basel) 2022; 15:ph15010101. [PMID: 35056157 PMCID: PMC8777838 DOI: 10.3390/ph15010101] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/08/2022] [Accepted: 01/10/2022] [Indexed: 01/27/2023] Open
Abstract
Age-related macular degeneration (AMD) is a multifactorial disease associated with anatomical changes in the inner retina. Despite tremendous advances in clinical care, there is currently no cure for AMD. This review aims to evaluate the published literature on the therapeutic roles of natural antioxidants in AMD. A literature search of PubMed, Web of Science and Google Scholar for peer-reviewed articles published between 1 January 2011 and 31 October 2021 was undertaken. A total of 82 preclinical and 18 clinical studies were eligible for inclusion in this review. We identified active compounds, carotenoids, extracts and polysaccharides, flavonoids, formulations, vitamins and whole foods with potential therapeutic roles in AMD. We evaluated the integral cellular signaling pathways including the activation of antioxidant pathways and angiogenesis pathways orchestrating their mode of action. In conclusion, we examined the therapeutic roles of natural antioxidants in AMD which warrant further study for application in clinical practice. Our current understanding is that natural antioxidants have the potential to improve or halt the progression of AMD, and tailoring therapeutics to the specific disease stages may be the key to preventing irreversible vision loss.
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14
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Dörschmann P, Apitz S, Hellige I, Neupane S, Alban S, Kopplin G, Ptak S, Fretté X, Roider J, Zille M, Klettner A. Evaluation of the Effects of Fucoidans from Fucus Species and Laminaria hyperborea against Oxidative Stress and Iron-Dependent Cell Death. Mar Drugs 2021; 19:557. [PMID: 34677456 PMCID: PMC8538076 DOI: 10.3390/md19100557] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 09/22/2021] [Indexed: 02/06/2023] Open
Abstract
Fucoidans are algal polysaccharides that exhibit protective properties against oxidative stress. The aim of this study was to investigate different fucoidans from brown seaweeds for their ability to protect against iron-dependent oxidative stress (ferroptosis), a main hallmark of retinal and brain diseases, including hemorrhage. We investigated five new high-molecular weight fucoidan extracts from Fucus vesiculosus, F. serratus, and F. distichus subsp. evanescens, a previously published Laminaria hyperborean extract, and commercially available extracts from F. vesiculosus and Undaria pinnatifida. We induced oxidative stress by glutathione depletion (erastin) and H2O2 in four retinal and neuronal cell lines as well as primary cortical neurons. Only extracts from F. serratus, F. distichus subsp. evanescens, and Laminaria hyperborea were partially protective against erastin-induced cell death in ARPE-19 and OMM-1 cells, while none of the extracts showed beneficial effects in neuronal cells. Protective fucoidans also attenuated the decrease in protein levels of the antioxidant enzyme GPX4, a key regulator of ferroptosis. This comprehensive analysis demonstrates that the antioxidant abilities of fucoidans may be cell type-specific, besides depending on the algal species and extraction method. Future studies are needed to further characterize the health-benefiting effects of fucoidans and to determine the exact mechanism underlying their antioxidative abilities.
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Affiliation(s)
- Philipp Dörschmann
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany; (P.D.); (S.A.); (J.R.)
| | - Sarah Apitz
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany; (P.D.); (S.A.); (J.R.)
| | - Inga Hellige
- Fraunhofer Research and Development Center for Marine and Cellular Biotechnology EMB, Mönkhofer Weg 239a, 23562 Lübeck, Germany; (I.H.); (M.Z.)
- Institute for Medical and Marine Biotechnology, University of Lübeck, Mönkhofer Weg 239a, 23562 Lübeck, Germany
| | - Sandesh Neupane
- Pharmaceutical Institute, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany; (S.N.); (S.A.)
| | - Susanne Alban
- Pharmaceutical Institute, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany; (S.N.); (S.A.)
| | - Georg Kopplin
- Alginor ASA, Haraldsgata 162, 5525 Haugesund, Norway;
| | - Signe Ptak
- Department of Chemical Engineering, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark; (S.P.); (X.F.)
| | - Xavier Fretté
- Department of Chemical Engineering, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark; (S.P.); (X.F.)
| | - Johann Roider
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany; (P.D.); (S.A.); (J.R.)
| | - Marietta Zille
- Fraunhofer Research and Development Center for Marine and Cellular Biotechnology EMB, Mönkhofer Weg 239a, 23562 Lübeck, Germany; (I.H.); (M.Z.)
- Institute for Medical and Marine Biotechnology, University of Lübeck, Mönkhofer Weg 239a, 23562 Lübeck, Germany
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, UZA II, Althanstraße 14, 1090 Vienna, Austria
| | - Alexa Klettner
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany; (P.D.); (S.A.); (J.R.)
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15
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Potential Antiviral Properties of Industrially Important Marine Algal Polysaccharides and Their Significance in Fighting a Future Viral Pandemic. Viruses 2021; 13:v13091817. [PMID: 34578399 PMCID: PMC8473461 DOI: 10.3390/v13091817] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 08/27/2021] [Indexed: 12/16/2022] Open
Abstract
Over the decades, the world has witnessed diverse virus associated pandemics. The significant inhibitory effects of marine sulfated polysaccharides against SARS-CoV-2 shows its therapeutic potential in future biomedical applications and drug development. Algal polysaccharides exhibited significant role in antimicrobial, antitumor, antioxidative, antiviral, anticoagulant, antihepatotoxic and immunomodulating activities. Owing to their health benefits, the sulfated polysaccharides from marine algae are a great deal of interest globally. Algal polysaccharides such as agar, alginate, carrageenans, porphyran, fucoidan, laminaran and ulvans are investigated for their nutraceutical potential at different stages of infection processes, structural diversity, complexity and mechanism of action. In this review, we focus on the recent antiviral studies of the marine algae-based polysaccharides and their potential towards antiviral medicines.
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16
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Zhang L, Li X, Zhang X, Li Y, Wang L. Bacterial alginate metabolism: an important pathway for bioconversion of brown algae. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:158. [PMID: 34275475 PMCID: PMC8286568 DOI: 10.1186/s13068-021-02007-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/04/2021] [Indexed: 06/13/2023]
Abstract
Brown macroalgae have attracted great attention as an alternative feedstock for biorefining. Although direct conversion of ethanol from alginates (major components of brown macroalgae cell walls) is not amenable for industrial production, significant progress has been made not only on enzymes involved in alginate degradation, but also on metabolic pathways for biorefining at the laboratory level. In this article, we summarise recent advances on four aspects: alginate, alginate lyases, different alginate-degrading systems, and application of alginate lyases and associated pathways. This knowledge will likely inspire sustainable solutions for further application of both alginate lyases and their associated pathways.
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Affiliation(s)
- Lanzeng Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Xue Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Xiyue Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
| | - Yingjie Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China.
| | - Lushan Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, China
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17
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Krueger K, Boehme E, Klettner AK, Zille M. The potential of marine resources for retinal diseases: a systematic review of the molecular mechanisms. Crit Rev Food Sci Nutr 2021; 62:7518-7560. [PMID: 33970706 DOI: 10.1080/10408398.2021.1915242] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We rely on vision more than on any other sense to obtain information about our environment. Hence, the loss or even impairment of vision profoundly affects our quality of life. Diet or food components have already demonstrated beneficial effects on the development of retinal diseases. Recently, there has been a growing interest in resources from marine animals and plants for the prevention of retinal diseases through nutrition. Especially fish intake and omega-3 fatty acids have already led to promising results, including associations with a reduced incidence of retinal diseases. However, the underlying molecular mechanisms are insufficiently explained. The aim of this review was to summarize the known mechanistic effects of marine resources on the pathophysiological processes in retinal diseases. We performed a systematic literature review following the PRISMA guidelines and identified 107 studies investigating marine resources in the context of retinal diseases. Of these, 46 studies described the underlying mechanisms including anti-inflammatory, antioxidant, antiangiogenic/vasoprotective, cytoprotective, metabolic, and retinal function effects, which we critically summarize. We further discuss perspectives on the use of marine resources for human nutrition to prevent retinal diseases with a particular focus on regulatory aspects, health claims, safety, and bioavailability.
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Affiliation(s)
- Kristin Krueger
- Department of Marine Biotechnology, Fraunhofer Research and Development Center for Marine and Cellular Biotechnology EMB, Lübeck, Germany
| | - Elke Boehme
- Department of Marine Biotechnology, Fraunhofer Research and Development Center for Marine and Cellular Biotechnology EMB, Lübeck, Germany
| | - Alexa Karina Klettner
- Department of Ophthalmology, University Medical Center, University of Kiel, Quincke Research Center, Kiel, Germany
| | - Marietta Zille
- Department of Marine Biotechnology, Fraunhofer Research and Development Center for Marine and Cellular Biotechnology EMB, Lübeck, Germany.,Institute for Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Lübeck, Germany
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18
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Jin JO, Chauhan PS, Arukha AP, Chavda V, Dubey A, Yadav D. The Therapeutic Potential of the Anticancer Activity of Fucoidan: Current Advances and Hurdles. Mar Drugs 2021; 19:265. [PMID: 34068561 PMCID: PMC8151601 DOI: 10.3390/md19050265] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/04/2021] [Accepted: 05/04/2021] [Indexed: 02/06/2023] Open
Abstract
Several types of cancers share cellular and molecular behaviors. Although many chemotherapy drugs have been designed to weaken the defenses of cancer cells, these drugs may also have cytotoxic effects on healthy tissues. Fucoidan, a sulfated fucose-based polysaccharide from brown algae, has gained much attention as an antitumor drug owing to its anticancer effects against multiple cancer types. Among the anticancer mechanisms of fucoidan are cell cycle arrest, apoptosis evocation, and stimulation of cytotoxic natural killer cells and macrophages. Fucoidan also protects against toxicity associated with chemotherapeutic drugs and radiation-induced damage. The synergistic effect of fucoidan with existing anticancer drugs has prompted researchers to explore its therapeutic potential. This review compiles the mechanisms through which fucoidan slows tumor growth, kills cancer cells, and interacts with cancer chemotherapy drugs. The obstacles involved in developing fucoidan as an anticancer agent are also discussed in this review.
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Affiliation(s)
- Jun-O. Jin
- Shanghai Public Health Clinical Center & Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai 201508, China
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan 38541, Korea
| | - Pallavi Singh Chauhan
- Amity Institute of Biotechnology, Amity University Madhya Pradesh, Gwalior 474005, India;
| | - Ananta Prasad Arukha
- Comparative Diagnostic and Population Medicine, College of Veterinary Medicine, University of Florida, Gainesville, FL 32608, USA;
| | - Vishal Chavda
- Division of Anaesthesia, Sardar Women’s Hospital, Ahmedabad 380004, Gujarat, India;
| | - Anuj Dubey
- Department of Chemistry, ITM Group of Institutions, Gwalior 475005, India;
| | - Dhananjay Yadav
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan 38541, Korea
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19
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Dörschmann P, Schmitt C, Bittkau KS, Neupane S, Synowitz M, Roider J, Alban S, Held-Feindt J, Klettner A. Evaluation of a Brown Seaweed Extract from Dictyosiphon foeniculaceus as a Potential Therapeutic Agent for the Treatment of Glioblastoma and Uveal Melanoma. Mar Drugs 2020; 18:E625. [PMID: 33302412 PMCID: PMC7762554 DOI: 10.3390/md18120625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/27/2020] [Accepted: 12/03/2020] [Indexed: 11/16/2022] Open
Abstract
Ingredients of brown seaweed like fucoidans are often described for their beneficial biological effects, that might be interesting for a medical application. In this study, we tested an extract from Dictyosiphon foeniculaceus (DF) to evaluate the effects in glioblastoma and uveal melanoma, looking for a possible anti-cancer treatment. We investigated toxicity, VEGF (vascular endothelial growth factor) secretion and gene expression of tumor and non-tumor cells. SVGA (human fetal astrocytes), the human RPE (retinal pigment epithelium) cell line ARPE-19, the tumor cell line OMM-1 (human uveal melanoma), and two different human primary glioblastoma cultures (116-14 and 118-14) were used. Tests for cell viability were conducted with MTS-Assay (3-(4,5-Dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium), and the proliferation rate was determined with cell counting. VEGF secretion was assessed with ELISA (enzyme-linked immunosorbent assay). The gene expression of VEGF receptor 1 (VEGFR1), VEGF receptor 2 (VEGFR2) and VEGF-A was determined with real-time qPCR (quantitative polymerase chain reaction). DF lowered the cell viability of OMM-1. Proliferation rates of ARPE-19 and OMM-1 were decreased. The VEGF secretion was inhibited in ARPE-19 and OMM-1, whereas it was increased in SVGA and 116-14. The expression of VEGFR1 was absent and not influenced in OMM-1 and ARPE-19. VEGFR2 expression was lowered in 116-14 after 24 h, whereas VEGF-A was increased in 118-14 after 72 h. The extract lowered cell viability slightly and was anti-proliferative depending on the cell type investigated. VEGF was heterogeneously affected. The results in glioblastoma were not promising, but the anti-tumor properties in OMM-1 could make them interesting for further research concerning cancer diseases in the human eye.
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Affiliation(s)
- Philipp Dörschmann
- Department of Ophthalmology, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, D-24105 Kiel, Germany; (J.R.); (A.K.)
| | | | - Kaya Saskia Bittkau
- Pharmaceutical Institute, Kiel University, D-24118 Kiel, Germany; (K.S.B.); (S.N.); (S.A.)
| | - Sandesh Neupane
- Pharmaceutical Institute, Kiel University, D-24118 Kiel, Germany; (K.S.B.); (S.N.); (S.A.)
| | - Michael Synowitz
- Department of Neurosurgery, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, D-24105 Kiel, Germany; (M.S.); (J.H.-F.)
| | - Johann Roider
- Department of Ophthalmology, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, D-24105 Kiel, Germany; (J.R.); (A.K.)
| | - Susanne Alban
- Pharmaceutical Institute, Kiel University, D-24118 Kiel, Germany; (K.S.B.); (S.N.); (S.A.)
| | - Janka Held-Feindt
- Department of Neurosurgery, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, D-24105 Kiel, Germany; (M.S.); (J.H.-F.)
| | - Alexa Klettner
- Department of Ophthalmology, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, D-24105 Kiel, Germany; (J.R.); (A.K.)
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20
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Dörschmann P, Klettner A. Fucoidans as Potential Therapeutics for Age-Related Macular Degeneration-Current Evidence from In Vitro Research. Int J Mol Sci 2020; 21:E9272. [PMID: 33291752 PMCID: PMC7729934 DOI: 10.3390/ijms21239272] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 11/30/2020] [Accepted: 12/02/2020] [Indexed: 02/06/2023] Open
Abstract
Age-related macular degeneration (AMD) is the major reason for blindness in the industrialized world with limited treatment options. Important pathogenic pathways in AMD include oxidative stress and vascular endothelial growth factor (VEGF) secretion. Due to their bioactivities, fucoidans have recently been suggested as potential therapeutics. This review gives an overview of the recent developments in this field. Recent studies have characterized several fucoidans from different species, with different molecular characteristics and different extraction methods, in regard to their ability to reduce oxidative stress and inhibit VEGF in AMD-relevant in vitro systems. As shown in these studies, fucoidans exhibit a species dependency in their bioactivity. Additionally, molecular properties such as molecular weight and fucose content are important issues. Fucoidans from Saccharina latissima and Laminaria hyperborea were identified as the most promising candidates for further development. Further research is warranted to establish fucoidans as potential therapeutics for AMD.
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Affiliation(s)
| | - Alexa Klettner
- Department of Ophthalmology, Campus Kiel, University Medical Center Schleswig-Holstein UKSH, 24105 Kiel, Germany;
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21
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Wang L, Jayawardena TU, Yang HW, Lee HG, Jeon YJ. The Potential of Sulfated Polysaccharides Isolated from the Brown Seaweed Ecklonia maxima in Cosmetics: Antioxidant, Anti-melanogenesis, and Photoprotective Activities. Antioxidants (Basel) 2020; 9:antiox9080724. [PMID: 32784879 PMCID: PMC7465393 DOI: 10.3390/antiox9080724] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/01/2020] [Accepted: 08/06/2020] [Indexed: 02/07/2023] Open
Abstract
Sulfated polysaccharides prepared from marine algae are potential ingredients in nutraceutical, pharmaceutical, and cosmeceutical industries. In the present study, the antioxidant, anti-melanogenesis, and photoprotective effects of sulfated polysaccharides obtained from Ecklonia maxima (EMC) were investigated to evaluate their potential in cosmetic. EMC was successfully prepared through Celluclast-assisted extraction and ethanol precipitation, and it contained 79.88% of sulfated polysaccharides that with 69.37% carbohydrates and 10.51% sulfate. EMC effectively suppressed 2,2-azobis(2-amidinopropane) hydrochloride (AAPH)-induced oxidative stress in vitro in Vero cells and in vivo in zebrafish. Furthermore, EMC significantly inhibited mushroom tyrosinase and reduced melanin synthesis in alpha-melanocyte-stimulating hormone-stimulated B16F10 cells. In addition, EMC remarkably attenuated photodamage induced by UVB irradiation in vitro in human keratinocytes (HaCaT cells) and in vivo in zebrafish. Furthermore, EMC effectively inhibited wrinkle-related enzymes and improved collagen synthesis in UVB-irradiated human dermal fibroblasts (HDF cells). These results indicate that EMC possesses strong antioxidant, anti-melanogenesis, and photoprotective activities, and suggest that EMC may be an ideal ingredient in the pharmaceutical and cosmeceutical industries.
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Affiliation(s)
- Lei Wang
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, Jeju 63243, Korea; (L.W.); (T.U.J.); (H.-W.Y.); (H.-G.L.)
- Marine Science Institute, Jeju National University, Jeju Self-Governing Province, Jeju 63243, Korea
| | - Thilina U. Jayawardena
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, Jeju 63243, Korea; (L.W.); (T.U.J.); (H.-W.Y.); (H.-G.L.)
| | - Hye-Won Yang
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, Jeju 63243, Korea; (L.W.); (T.U.J.); (H.-W.Y.); (H.-G.L.)
| | - Hyo-Geun Lee
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, Jeju 63243, Korea; (L.W.); (T.U.J.); (H.-W.Y.); (H.-G.L.)
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, Jeju 63243, Korea; (L.W.); (T.U.J.); (H.-W.Y.); (H.-G.L.)
- Marine Science Institute, Jeju National University, Jeju Self-Governing Province, Jeju 63243, Korea
- Correspondence: ; Tel.: +82-64-754-3475; Fax: +82-64-756-3493
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Schnichels S, Paquet-Durand F, Löscher M, Tsai T, Hurst J, Joachim SC, Klettner A. Retina in a dish: Cell cultures, retinal explants and animal models for common diseases of the retina. Prog Retin Eye Res 2020; 81:100880. [PMID: 32721458 DOI: 10.1016/j.preteyeres.2020.100880] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Revised: 06/23/2020] [Accepted: 06/26/2020] [Indexed: 12/11/2022]
Abstract
For many retinal diseases, including age-related macular degeneration (AMD), glaucoma, and diabetic retinopathy (DR), the exact pathogenesis is still unclear. Moreover, the currently available therapeutic options are often unsatisfactory. Research designed to remedy this situation heavily relies on experimental animals. However, animal models often do not faithfully reproduce human disease and, currently, there is strong pressure from society to reduce animal research. Overall, this creates a need for improved disease models to understand pathologies and develop treatment options that, at the same time, require fewer or no experimental animals. Here, we review recent advances in the field of in vitro and ex vivo models for AMD, glaucoma, and DR. We highlight the difficulties associated with studies on complex diseases, in which both the initial trigger and the ensuing pathomechanisms are unclear, and then delineate which model systems are optimal for disease modelling. To this end, we present a variety of model systems, ranging from primary cell cultures, over organotypic cultures and whole eye cultures, to animal models. Specific advantages and disadvantages of such models are discussed, with a special focus on their relevance to putative in vivo disease mechanisms. In many cases, a replacement of in vivo research will mean that several different in vitro models are used in conjunction, for instance to analyze and validate causative molecular pathways. Finally, we argue that the analytical decomposition into appropriate cell and tissue model systems will allow making significant progress in our understanding of complex retinal diseases and may furthermore advance the treatment testing.
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Affiliation(s)
- Sven Schnichels
- University Eye Hospital, Centre for Ophthalmology, University of Tübingen, Germany.
| | - François Paquet-Durand
- Institute for Ophthalmic Research, Centre for Ophthalmology, University of Tübingen, Germany
| | - Marina Löscher
- University Eye Hospital, Centre for Ophthalmology, University of Tübingen, Germany
| | - Teresa Tsai
- Experimental Eye Research Institute, University Eye Hospital, Ruhr-University Bochum, Germany
| | - José Hurst
- University Eye Hospital, Centre for Ophthalmology, University of Tübingen, Germany
| | - Stephanie C Joachim
- Experimental Eye Research Institute, University Eye Hospital, Ruhr-University Bochum, Germany
| | - Alexa Klettner
- Department of Ophthalmology, University Medical Center, University of Kiel, Kiel, Germany
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23
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Co-creating Science Commercialization Opportunities for Blue Biotechnologies: The FucoSan Project. SUSTAINABILITY 2020. [DOI: 10.3390/su12145578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We report the experience of the FucoSan InterReg project that had the ambition to generate commercialization opportunities for biotechnology research in a marine environment. Fucoidan, a promising biomarine polysaccharide extracted from seaweed, offers a broad array of potential applications; however, the supporting innovation value chain is still under development. We explore how the use of business modelling tools can contribute to building a shared understanding of commercialization opportunities across a diverse range of research and development actors. We analyze data (interviews, workshops, and surveys) from a German-Danish network of actors involved in the FucoSan InterReg project to identify how the tools contribute to setting up a base to support future activities across a potential innovation value chain. The results point towards the direct and indirect positive effects of engaging in the co-creation of a shared understanding of the functionality and possibilities of promising biomarine products. The findings support the idea that interdisciplinary and multilateral interactions help actors to identify the necessary connections and interdependencies to build a sustainability-driven innovation value chain.
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Dörschmann P, Mikkelsen MD, Thi TN, Roider J, Meyer AS, Klettner A. Effects of a Newly Developed Enzyme-Assisted Extraction Method on the Biological Activities of Fucoidans in Ocular Cells. Mar Drugs 2020; 18:E282. [PMID: 32466624 PMCID: PMC7344579 DOI: 10.3390/md18060282] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/20/2020] [Accepted: 05/25/2020] [Indexed: 12/26/2022] Open
Abstract
Fucoidans from brown seaweeds are promising substances as potential drugs against age-related macular degeneration (AMD). The heterogeneity of fucoidans requires intensive research in order to find suitable species and extraction methods. Ten different fucoidan samples extracted enzymatically from Laminaria digitata (LD), Saccharina latissima (SL) and Fucus distichus subsp. evanescens (FE) were tested for toxicity, oxidative stress protection and VEGF (vascular endothelial growth factor) inhibition. For this study crude fucoidans were extracted from seaweeds using different enzymes and SL fucoidans were further separated into three fractions (SL_F1-F3) by ion-exchange chromatography (IEX). Fucoidan composition was analyzed by high performance anion exchange chromatography (HPAEC) after acid hydrolysis. The crude extracts contained alginate, while two of the fractionated SL fucoidans SL_F2 and SL_F3 were highly pure. Cell viability was assessed with an 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay in OMM-1 and ARPE-19. Protective effects were investigated after 24 h of stress insult in OMM-1 and ARPE-19. Secreted VEGF was analyzed via ELISA (enzyme-linked immunosorbent assay) in ARPE-19 cells. Fucoidans showed no toxic effects. In OMM-1 SL_F2 and several FE fucoidans were protective. LD_SiAT2 (Cellic®CTec2 + Sigma-Aldrich alginate lyase), FE_SiAT3 (Cellic® CTec3 + Sigma-Aldrich alginate lyase), SL_F2 and SL_F3 inhibited VEGF with the latter two as the most effective. We could show that enzyme treated fucoidans in general and the fractionated SL fucoidans SL_F2 and SL_F3 are very promising for beneficial AMD relevant biological activities.
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Affiliation(s)
- Philipp Dörschmann
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany; (J.R.); (A.K.)
| | - Maria Dalgaard Mikkelsen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, 2800 Kongens Lyngby, Denmark; (M.D.M.); (T.N.T.); (A.S.M.)
| | - Thuan Nguyen Thi
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, 2800 Kongens Lyngby, Denmark; (M.D.M.); (T.N.T.); (A.S.M.)
| | - Johann Roider
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany; (J.R.); (A.K.)
| | - Anne S. Meyer
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Søltofts Plads, 2800 Kongens Lyngby, Denmark; (M.D.M.); (T.N.T.); (A.S.M.)
| | - Alexa Klettner
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany; (J.R.); (A.K.)
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25
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Degraded fucoidan fractions and β-1,3-glucan sulfates inhibit CXCL12-induced Erk1/2 activation and chemotaxis in Burkitt lymphoma cells. Int J Biol Macromol 2019; 143:968-976. [PMID: 31726164 DOI: 10.1016/j.ijbiomac.2019.09.157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/13/2019] [Accepted: 09/23/2019] [Indexed: 12/30/2022]
Abstract
Fucoidans are natural polysaccharides with pronounced antitumoral activities. Their modes of action include the antagonization of the chemokine CXCL12, which plays a central role in tumor development and metastasis. However, the usually high molecular mass (Mw) of fucoidans represents an obstacle to their medical application. We therefore investigated two series of degraded fucoidan fractions with regard to their CXCL12 binding and inhibition of CXCL12-induced effects in Raji cells. In addition, semisynthetic β-1,3-glucan sulfates were examined to get more information about the impact of Mw and degree of sulfation (DS). Degradation of the fucoidans from Saccharina latissima (S.l.-SP; 481-77.0 kDa) and Fucus vesiculosus (F.v.-SP; 38.2-20.6 kDa) did not affect the respective binding capacity to CXCL12. Both the Mw independence and the DS dependence were confirmed by the β-1,3-glucan sulfates having significantly higher affinity to CXCL12. The chemokine binding resulted in reduced CXCL12-induced Erk1/2 signaling and chemotaxis of Raji cells which was also independent of the Mw. Solely the oxidatively degraded fucoidan fraction displayed a significantly reduced chemotaxis inhibition. In conclusion, degradation of fucoidans to obtain biopharmaceutically more favorable Mw is possible without impairing their activities targeting CXCL12. Moreover, the β-1,3-glucan sulfates should also be considered as promising candidates for further development.
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Fitton HJ, Stringer DS, Park AY, Karpiniec SN. Therapies from Fucoidan: New Developments. Mar Drugs 2019; 17:E571. [PMID: 31601041 PMCID: PMC6836154 DOI: 10.3390/md17100571] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/04/2019] [Accepted: 10/04/2019] [Indexed: 12/16/2022] Open
Abstract
Since our last review in 2015, the study and use of fucoidan has extended in several research areas. Clinical use of fucoidan for the treatment of renal disease has become available and human safety studies have been undertaken on radiolabeled fucoidan for the purpose of imaging thrombi. Fucoidan has been incorporated into an increasing number of commercially available supplements and topical treatments. In addition, new measuring techniques are now available to assess the biologically relevant uptake of fucoidans and to assist in production. Microbiome modulation and anti-pathogenic effects are increasingly promising applications for fucoidans, due to the need for alternative approaches to antibiotic use in the food chain. This review outlines promising new developments in fucoidan research, including potential future therapeutic use.
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Affiliation(s)
- Helen J Fitton
- Marinova Pty Ltd., 249 Kennedy Drive, Cambridge, Tasmania 7170, Australia.
| | - Damien S Stringer
- Marinova Pty Ltd., 249 Kennedy Drive, Cambridge, Tasmania 7170, Australia
| | - Ah Young Park
- Marinova Pty Ltd., 249 Kennedy Drive, Cambridge, Tasmania 7170, Australia
| | - Samuel N Karpiniec
- Marinova Pty Ltd., 249 Kennedy Drive, Cambridge, Tasmania 7170, Australia
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27
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Dörschmann P, Kopplin G, Roider J, Klettner A. Effects of Sulfated Fucans from Laminaria hyperborea Regarding VEGF Secretion, Cell Viability, and Oxidative Stress and Correlation with Molecular Weight. Mar Drugs 2019; 17:E548. [PMID: 31557816 PMCID: PMC6835690 DOI: 10.3390/md17100548] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 09/13/2019] [Accepted: 09/23/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Sulfated fucans show interesting effects in the treatment of ocular diseases (e.g., age-related macular degeneration), depending on their chemical structure. Here, we compared three purified sulfated fucans from Laminaria hyperborea (LH) regarding cell viability, oxidative stress protection, and vascular endothelial growth factor (VEGF) secretion in ocular cells. METHODS High-molecular-weight sulfated fucan (Mw = 1548.6 kDa, Fuc1) was extracted with warm water and purified through ultrafiltration. Lower-molecular-weight samples (Mw = 499 kDa, Fuc2; 26.9 kDa, Fuc3) were obtained by mild acid hydrolysis of ultrapurified sulfated fucan and analyzed (SEC-MALS (Size-exclusion chromatography-Multi-Angle Light Scattering), ICP-MS, and GC). Concentrations between 1 and 100 µg/mL were tested. Cell viability was measured after 24 h (uveal melanoma cell line (OMM-1), retinal pigment epithelium (RPE) cell line ARPE-19, primary RPE cells) via MTT/MTS (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide/3-(4,5-Dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay. Oxidative stress protection was determined after 24 h (OMM-1, ARPE-19). VEGF secretion was analyzed via ELISA after three days (ARPE-19, RPE). RESULTS Fuc2 and Fuc3 were antiproliferative for OMM-1, but not for ARPE. Fuc1 protected OMM-1. VEGF secretion was lowered with all fucans except Fuc3 in ARPE-19 and RPE. The results suggest a correlation between molecular weight and biological activity, with efficiency increasing with size. CONCLUSION The LH sulfated fucan Fuc1 showed promising results regarding VEGF inhibition and protection, encouraging further medical research.
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Affiliation(s)
- Philipp Dörschmann
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany.
| | - Georg Kopplin
- Alginor ASA, Haraldsgata 162, 5525 Haugesund, Norway.
- Norwegian Biopolymer Laboratory (NOBIPOL), Department of Biotechnology and Food Science, NTNU, 7491 Trondheim, Norway.
| | - Johann Roider
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany.
| | - Alexa Klettner
- Department of Ophthalmology, University Medical Center, University of Kiel, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany.
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28
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Rohwer K, Neupane S, Bittkau KS, Pérez MG, Dörschmann P, Roider J, Alban S, Klettner A. Effects of Crude Fucus distichus Subspecies evanescens Fucoidan Extract on Retinal Pigment Epithelium Cells-Implications for Use in Age-Related Macular Degeneration. Mar Drugs 2019; 17:E538. [PMID: 31527536 PMCID: PMC6780902 DOI: 10.3390/md17090538] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 08/29/2019] [Accepted: 09/10/2019] [Indexed: 12/18/2022] Open
Abstract
Fucoidan extracts may have beneficial effects in age-related macular degeneration(AMD). Over-the-counter fucoidan preparations are generally undefined, crude extracts. In thisstudy, we investigated the effect of a crude fucoidan extract from Fucus distichus subspeciesevanescens (Fe) on the retinal pigment epithelium (RPE). Fe extract was investigated for chemicalcomposition and molar mass. It was tested in primary RPE and RPE cell line ARPE19. Oxidativestress was induced with tert-butyl hydroperoxide, cell viability evaluated with MTT assay, VEGFsecretion assessed in ELISA. Phagocytosis was evaluated in a fluorescence microscopic assay.Wound healing ability was tested in a scratch assay. Additionally, the inhibition of elastase andcomplement system by Fe extract was studied. The Fe extract contained about 61.9% fucose andhigh amounts of uronic acids (26.2%). The sulfate content was not as high as expected (6.9%). It wasnot toxic and not protective against oxidative stress. However, Fe extract was able to reduce VEGFsecretion in ARPE19. Phagocytosis was also reduced. Concerning wound healing, a delay could beobserved in higher concentrations. While some beneficial effects could be found, it seems tointerfere with RPE function, which may reduce its beneficial effects in AMD treatment.
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Affiliation(s)
- Kevin Rohwer
- Department of Ophthalmology, University Medical Center, University of Kiel, 24105 Kiel, Germany; (K.R.); (P.D.); (J.R.)
| | - Sandesh Neupane
- Department of Pharmaceutical Biology, Pharmaceutical Institute, University of Kiel, 24105 Kiel, Germany; (S.N.); (K.S.B.); (M.G.P.); (S.A.)
| | - Kaya Saskia Bittkau
- Department of Pharmaceutical Biology, Pharmaceutical Institute, University of Kiel, 24105 Kiel, Germany; (S.N.); (K.S.B.); (M.G.P.); (S.A.)
| | - Mayra Galarza Pérez
- Department of Pharmaceutical Biology, Pharmaceutical Institute, University of Kiel, 24105 Kiel, Germany; (S.N.); (K.S.B.); (M.G.P.); (S.A.)
| | - Philipp Dörschmann
- Department of Ophthalmology, University Medical Center, University of Kiel, 24105 Kiel, Germany; (K.R.); (P.D.); (J.R.)
| | - Johann Roider
- Department of Ophthalmology, University Medical Center, University of Kiel, 24105 Kiel, Germany; (K.R.); (P.D.); (J.R.)
| | - Susanne Alban
- Department of Pharmaceutical Biology, Pharmaceutical Institute, University of Kiel, 24105 Kiel, Germany; (S.N.); (K.S.B.); (M.G.P.); (S.A.)
| | - Alexa Klettner
- Department of Ophthalmology, University Medical Center, University of Kiel, 24105 Kiel, Germany; (K.R.); (P.D.); (J.R.)
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Fucoidan Suppresses Mitochondrial Dysfunction and Cell Death against 1-Methyl-4-Phenylpyridinum-Induced Neuronal Cytotoxicity via Regulation of PGC-1α Expression. Mar Drugs 2019; 17:md17090518. [PMID: 31480724 PMCID: PMC6780744 DOI: 10.3390/md17090518] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/07/2019] [Accepted: 08/29/2019] [Indexed: 12/15/2022] Open
Abstract
Mitochondria are considered to be the powerhouses of cells. They are the most commonly damaged organelles within dopaminergic neurons in patients with Parkinson's disease (PD). Despite the importance of protecting neuronal mitochondria in PD patients, the detailed mechanisms underlying mitochondrial dysfunction during pathogenesis and pathophysiological progression of PD have not yet been elucidated. We investigated the protective action of fucoidan against the detrimental action of 1-methyl-4-phenyl-pyridinium (MPP+), a neurotoxin used to model PD, in the mitochondria of SH-SY5Y neural cells. Fucoidan increased the expression of peroxisome proliferator-activated receptor gamma coactivator-1 alpha (PGC-1α) and protected the cells from MPP+-induced apoptosis by upregulating the 5' adenosine monophosphate-activated protein kinase (AMPK)-PGC-1α axis. These effects were blocked by the silencing of the PGC-1α axis. These results indicated that fucoidan protects SH-SY5Y cells from mitochondrial dysfunction and cell death caused by MPP+ treatment, via the AMPK-PGC-1α axis. These findings also suggest that fucoidan could potentially be used as a therapeutic agent for PD.
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Bittkau KS, Dörschmann P, Blümel M, Tasdemir D, Roider J, Klettner A, Alban S. Comparison of the Effects of Fucoidans on the Cell Viability of Tumor and Non-Tumor Cell Lines. Mar Drugs 2019; 17:E441. [PMID: 31357497 PMCID: PMC6722501 DOI: 10.3390/md17080441] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 07/15/2019] [Accepted: 07/23/2019] [Indexed: 12/13/2022] Open
Abstract
Fucoidans extracted from brown algae exert manifold biological activities paving the way for the development of numerous applications including treatments outside tumor therapy such as age-related macular degeneration or tissue engineering. In this study, we investigated the antiproliferative effects of fucoidans extracted from six different algae (Fucus vesiculosus, F. serratus, F. distichus subsp. evanescens, Dictyosiphon foeniculaceus, Laminaria digitata, Saccharina latissima) as well as three reference compounds (Sigma fucoidan, heparin, enoxaparin) on tumor (HL-60, Raji, HeLa, OMM-1, A-375, HCT-116, Hep G2) and non-tumor (ARPE-19, HaCaT) cell lines. All fucoidans were extracted according to a standardized procedure and tested in a commercially available MTS assay. Cell viability was measured after 24 h incubation with test compounds (1-100 µg/mL). Apart from few exceptions, fucoidans and heparins did not impair cell viability. In contrast, fucoidans significantly increased cell viability of suspension cell lines, but not of adherent cells. Fucoidans slightly increased viability of tumor cells and had no impact on the viability of non-tumor cells. The cell viability of HeLa and ARPE-19 cells negatively correlated with protein content and total phenolic content (TPC) of fucoidans, respectively. In summary, none of the tested fucoidans turned out to be anti-proliferative, rendering them interesting for future studies and applications.
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Affiliation(s)
- Kaya Saskia Bittkau
- Pharmaceutical Institute, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany
| | - Philipp Dörschmann
- University of Kiel, University Medical Center, Department of Ophthalmology, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
| | - Martina Blümel
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, 24106 Kiel, Germany
| | - Deniz Tasdemir
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, 24106 Kiel, Germany
- Faculty of Mathematics and Natural Sciences, Kiel University, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
| | - Johann Roider
- University of Kiel, University Medical Center, Department of Ophthalmology, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany
| | - Alexa Klettner
- University of Kiel, University Medical Center, Department of Ophthalmology, Arnold-Heller-Str. 3, Haus 25, 24105 Kiel, Germany.
| | - Susanne Alban
- Pharmaceutical Institute, Kiel University, Gutenbergstraße 76, 24118 Kiel, Germany.
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