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Gagliardi A, Chiarella E, Voci S, Ambrosio N, Celano M, Cristina Salvatici M, Cosco D. DIFUCOSIN: DIclofenac sodium salt loaded FUCOidan-SericIN nanoparticles for the management of chronic inflammatory diseases. Int J Pharm 2024; 655:124034. [PMID: 38531433 DOI: 10.1016/j.ijpharm.2024.124034] [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: 01/24/2024] [Revised: 03/07/2024] [Accepted: 03/20/2024] [Indexed: 03/28/2024]
Abstract
The current investigation emphasizes the use of fucoidan and sericin as dual-role biomaterials for obtaining novel nanohybrid systems for the delivery of diclofenac sodium (DS) and the potential treatment of chronic inflammatory diseases. The innovative formulations containing 4 mg/ml of fucoidan and 3 mg/ml of sericin showed an average diameter of about 200 nm, a low polydispersity index (0.17) and a negative surface charge. The hybrid nanosystems demonstrated high stability at various pHs and temperatures, as well as in both saline and glucose solutions. The Rose Bengal assay evidenced that fucoidan is the primary modulator of relative surface hydrophobicity with a two-fold increase of this parameter when compared to sericin nanoparticles. The interaction between the drug and the nanohybrids was confirmed through FT-IR analysis. Moreover, the release profile of DS from the colloidal systems showed a prolonged and constant drug leakage over time both at pH 5 and 7. The DS-loaded nanohybrids (DIFUCOSIN) induced a significant decrease of IL-6 and IL-1β with respect to the active compound in human chondrocytes evidencing a synergistic action of the individual components of nanosystems and the drug and demonstrating the potential application of the proposed nanomedicine for the treatment of inflammation.
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Affiliation(s)
- Agnese Gagliardi
- Department of Health Sciences, University "Magna Græcia", 88100 Catanzaro, Italy
| | - Emanuela Chiarella
- Department of Experimental and Clinical Medicine, University "Magna Græcia", 88100 Catanzaro, Italy
| | - Silvia Voci
- Department of Health Sciences, University "Magna Græcia", 88100 Catanzaro, Italy
| | - Nicola Ambrosio
- Department of Health Sciences, University "Magna Græcia", 88100 Catanzaro, Italy
| | - Marilena Celano
- Department of Health Sciences, University "Magna Græcia", 88100 Catanzaro, Italy
| | - Maria Cristina Salvatici
- Institute of Chemistry of Organometallic Compounds (ICCOM)-Electron Microscopy Centre (Ce.M.E.), National Research Council (CNR), 50019, Sesto Fiorentino, Firenze, Italy
| | - Donato Cosco
- Department of Health Sciences, University "Magna Græcia", 88100 Catanzaro, Italy.
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Xin Z, Zhang M, Cui H, Ding X, Zhang T, Wu L, Cui H, Xue Q, Chen C, Gao J. Algae: A Robust Living Material Against Cancer. Int J Nanomedicine 2023; 18:5243-5264. [PMID: 37727650 PMCID: PMC10506609 DOI: 10.2147/ijn.s423412] [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: 06/21/2023] [Accepted: 08/29/2023] [Indexed: 09/21/2023] Open
Abstract
Cancer is the second leading cause of death worldwide. Its incidence has been increasing in recent years, and it is becoming a major threat to human health. Conventional cancer treatment strategies, including surgery, chemotherapy, and radiotherapy, have faced problems such as drug resistance, toxic side effects and unsatisfactory therapeutic efficacy. Therefore, better development and utilization of biomaterials can improve the specificity and efficacy of tumor therapy. Algae, as a novel living material, possesses good biocompatibility. Although some reviews have elucidated several algae-based biomaterials for cancer treatment, the majority of the literature has focused on a limited number of algae. As a result, there is currently a lack of comprehensive reviews on the subject of anticancer algae. This review aims to address this gap by conducting a thorough examination of algal species that show potential for anticancer activity. Furthermore, our review will also elucidate the engineering strategies of algae and discuss the challenges and prospects associated with their implementation.
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Affiliation(s)
- Zhongyuan Xin
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, People’s Republic of China
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Mengya Zhang
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Hengqing Cui
- Department of Plastic and Cosmetic Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Xiuwen Ding
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Tinglin Zhang
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Lili Wu
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Haipo Cui
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, People’s Republic of China
| | - Qian Xue
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Cuimin Chen
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
| | - Jie Gao
- Changhai Clinical Research Unit, Shanghai Changhai Hospital, Naval Medical University, Shanghai, People’s Republic of China
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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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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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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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Yadav D, Song M. Therapeutic Applications of Fucoidans and their Potential to Act Against COVID-19. Curr Pharm Des 2022; 28:3671-3676. [PMID: 36475344 DOI: 10.2174/1381612829666221207093215] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/16/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022]
Abstract
In this review article, we present the updated evidence of therapeutic applications of fucoidan (a seaweed polysaccharide) and its novel potential to treat infectious diseases such as coronavirus disease (COVID-19). Because of their many biological activities, seaweeds have been identified as a rich and useful source of bioactive chemicals. Sulfated polysaccharides from the sea are considered a source of physiologically active chemicals that might be used in medication development. Antitumor, antiviral, antioxidant, antibacterial, anticoagulant, and immune-inflammatory properties have all been described for these compounds. By interfering at various phases of viral infection, marine sulfated polysaccharide has a virucidal effect. As a result, it opens the door to the development of antiviral treatments. Virus entry into host cells is an initial process, avoiding this type of entry makes any precautionary measure effective. The inhibitory action of certain marine sulfated polysaccharides against coronavirus was tested, and fucoidan, iota-carrageenan, and sea cucumber sulfated polysaccharides all showed a substantial antiviral impact. Fucoidan is one of the useful sulfated polysaccharides that has been widely studied and explored in various research. There are different sources of fucoidans, which have been used in the treatment of viral infection. Additionally, we highlight the mechanism of action of fuocidan against COVID-19. Hence, we could suggest that COVID-19 might be prevented and treated using these sulfated polysaccharides. This review thus highlights ample evidence to support the hypothesis that a large number of drugs have been developed from powerful compounds isolated from marine seaweeds.
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Affiliation(s)
- Dhananjay Yadav
- Department of Life Science, Yeungnam University, Gyeongsan, 38541, South Korea
| | - Minseok Song
- Department of Life Science, Yeungnam University, Gyeongsan, 38541, South Korea
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Seaweeds in the Oncology Arena: Anti-Cancer Potential of Fucoidan as a Drug—A Review. Molecules 2022; 27:molecules27186032. [PMID: 36144768 PMCID: PMC9506145 DOI: 10.3390/molecules27186032] [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: 07/27/2022] [Revised: 09/06/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
Marine natural products are a discerning arena to search for the future generation of medications to treat a spectrum of ailments. Meanwhile, cancer is becoming more ubiquitous over the world, and the likelihood of dying from it is rising. Surgery, radiation, and chemotherapy are the mainstays of cancer treatment worldwide, but their extensive side effects limit their curative effect. The quest for low-toxicity marine drugs to prevent and treat cancer is one of the current research priorities of researchers. Fucoidan, an algal sulfated polysaccharide, is a potent therapeutic lead candidate against cancer, signifying that far more research is needed. Fucoidan is a versatile, nontoxic marine-origin heteropolysaccharide that has received much attention due to its beneficial biological properties and safety. Fucoidan has been demonstrated to exhibit a variety of conventional bioactivities, such as antiviral, antioxidant, and immune-modulatory characteristics, and anticancer activity against a wide range of malignancies has also recently been discovered. Fucoidan inhibits tumorigenesis by prompting cell cycle arrest and apoptosis, blocking metastasis and angiogenesis, and modulating physiological signaling molecules. This review compiles the molecular and cellular aspects, immunomodulatory and anticancer actions of fucoidan as a natural marine anticancer agent. Specific fucoidan and membranaceous polysaccharides from Ecklonia cava, Laminaria japonica, Fucus vesiculosus, Astragalus, Ascophyllum nodosum, Codium fragile serving as potential anticancer marine drugs are discussed in this review.
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Piñeiro-Ramil M, Flórez-Fernández N, Ramil-Gómez O, Torres MD, Dominguez H, Blanco FJ, Meijide-Faílde R, Vaamonde-García C. Antifibrotic effect of brown algae-derived fucoidans on osteoarthritic fibroblast-like synoviocytes. Carbohydr Polym 2022; 282:119134. [PMID: 35123730 DOI: 10.1016/j.carbpol.2022.119134] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/23/2021] [Accepted: 01/09/2022] [Indexed: 12/12/2022]
Abstract
Synovial fibrosis is a pathological process which contributes to joint pain and stiffness in several musculoskeletal disorders. Fucoidans, sulfated polysaccharides found in brown algae, have recently emerged as promising therapeutic agents. Despite the increasing amount of evidence suggesting the protective role of fucoidans in different experimental approaches of human fibrotic disorders, the effect of these sulfated polysaccharides on synovial fibrosis has not been investigated yet. By an in vitro experimental approach in fibroblast-like synoviocytes, we detected that fucoidans inhibit their differentiation into myofibroblasts with tumor cell-like characteristics and restore apoptosis. Composition and structure of fucoidan appear to be critical for the detected activity. Furthermore, protective effects of these sulfated polysaccharides are mediated by upregulation of nitric oxide production and modulation of TGF-β/smad pathway. Altogether, our results support the use of fucoidans as therapeutic compounds in the treatment of the fibrotic processes involved in rheumatic pathologies.
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Affiliation(s)
- María Piñeiro-Ramil
- Universidade da Coruña, Tissue Engineering and Cellular Therapy Group, Instituto de Investigación Biomédica de A Coruña (INIBIC), Centro de Investigaciones Científicas Avanzadas (CICA), 15006 A Coruña, Spain.
| | - Noelia Flórez-Fernández
- CINBIO, Universidade de Vigo, Biomass and Sustanaible Development Group (EQ2), Departament of Chemical Engineering, 32004 Ourense, Spain.
| | - Olalla Ramil-Gómez
- Aging and Inflammation Research Laboratory, Instituto de Investigaciones Biomédicas de A Coruña (INIBIC), 15006 A Coruña, Spain; Universidade de Coruña, Endocrine, Nutritional and Metabolic Diseases Group, Departamento de Fisioterapia, Medicina y Ciencias Biomédicas, Facultad de Ciencias de la Salud, 15006 A Coruña, Spain.
| | - María Dolores Torres
- CINBIO, Universidade de Vigo, Biomass and Sustanaible Development Group (EQ2), Departament of Chemical Engineering, 32004 Ourense, Spain.
| | - Herminia Dominguez
- CINBIO, Universidade de Vigo, Biomass and Sustanaible Development Group (EQ2), Departament of Chemical Engineering, 32004 Ourense, Spain.
| | - Francisco J Blanco
- Universidade da Coruña, Grupo de Investigacion en Reumatología y Salud, Centro de Investigaciones Científicas Avanzadas (CICA), Departamento de Fisioterapia, Medicina y Ciencias Biomédicas, Facultad de Fisioterapia, 15006 A Coruña, Spain; Hospital Universitario A Coruña, Instituto de Investigación Biomédica de A Coruña (INIBIC), Grupo de Investigacion en Reumatología, 15006 A Coruña, Spain.
| | - Rosa Meijide-Faílde
- Universidade da Coruña, Tissue Engineering and Cellular Therapy Group, Instituto de Investigación Biomédica de A Coruña (INIBIC), Centro de Investigaciones Científicas Avanzadas (CICA), 15006 A Coruña, Spain; Universidade da Coruña, Departamento de Fisioterapia, Medicina y Ciencias Biomédicas, Facultad de Ciencias de la Salud, 15006 A Coruña, Spain.
| | - Carlos Vaamonde-García
- Universidade da Coruña, Grupo de Investigacion en Reumatología y Salud, Centro de Investigaciones Científicas Avanzadas (CICA), Departamento de Biología, Facultad de Ciencias, 15071 A Coruña, Spain.
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Ahmad T, Eapen MS, Ishaq M, Park AY, Karpiniec SS, Stringer DN, Sohal SS, Fitton JH, Guven N, Caruso V, Eri R. Anti-Inflammatory Activity of Fucoidan Extracts In Vitro. Mar Drugs 2021; 19:702. [PMID: 34940701 PMCID: PMC8704339 DOI: 10.3390/md19120702] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/25/2021] [Accepted: 12/01/2021] [Indexed: 02/07/2023] Open
Abstract
Fucoidans are sulfated, complex, fucose-rich polymers found in brown seaweeds. Fucoidans have been shown to have multiple bioactivities, including anti-inflammatory effects, and are known to inhibit inflammatory processes via a number of pathways such as selectin blockade and enzyme inhibition, and have demonstrated inhibition of inflammatory pathologies in vivo. In this current investigation, fucoidan extracts from Undaria pinnatifida, Fucus vesiculosus, Macrocystis pyrifera, Ascophyllum nodosum, and Laminaria japonica were assessed for modulation of pro-inflammatory cytokine production (TNF-α, IL-1β, and IL-6) by human peripheral blood mononuclear cells (PBMCs) and in a human macrophage line (THP-1). Fucoidan extracts exhibited no signs of cytotoxicity in THP-1 cells after incubation of 48 h. Additionally, all fucoidan extracts reduced cytokine production in LPS stimulated PBMCs and human THP-1 cells in a dose-dependent fashion. Notably, the 5-30 kDa subfraction from Macrocystis pyrifera was a highly effective inhibitor at lower concentrations. Fucoidan extracts from all species had significant anti-inflammatory effects, but the lowest molecular weight subfractions had maximal effects at low concentrations. These observations on various fucoidan extracts offer insight into strategies that improve their efficacy against inflammation-related pathology. Further studies should be conducted to elucidate the mechanism of action of these extracts.
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Affiliation(s)
- Tauseef Ahmad
- School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
| | - Mathew Suji Eapen
- Respiratory Translational Research Group, Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7248, Australia; (M.S.E.); (S.S.S.)
| | - Muhammad Ishaq
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.I.); (N.G.); (V.C.)
| | - Ah Young Park
- Marinova Pty Ltd., Cambridge, TAS 7170, Australia; (A.Y.P.); (S.S.K.); (D.N.S.)
| | - Samuel S. Karpiniec
- Marinova Pty Ltd., Cambridge, TAS 7170, Australia; (A.Y.P.); (S.S.K.); (D.N.S.)
| | - Damien N. Stringer
- Marinova Pty Ltd., Cambridge, TAS 7170, Australia; (A.Y.P.); (S.S.K.); (D.N.S.)
| | - Sukhwinder Singh Sohal
- Respiratory Translational Research Group, Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, TAS 7248, Australia; (M.S.E.); (S.S.S.)
| | - J. Helen Fitton
- Marinova Pty Ltd., Cambridge, TAS 7170, Australia; (A.Y.P.); (S.S.K.); (D.N.S.)
- RDadvisor, Hobart, TAS 7006, Australia
| | - Nuri Guven
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.I.); (N.G.); (V.C.)
| | - Vanni Caruso
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7005, Australia; (M.I.); (N.G.); (V.C.)
- ISAL Foundation, Research on Pain, Torre Pedrera, 204-47922 Rimini, Italy
| | - Rajaraman Eri
- School of Health Sciences, University of Tasmania, Launceston, TAS 7248, Australia;
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11
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Wolski GJ, Sadowska B, Fol M, Podsędek A, Kajszczak D, Kobylińska A. Cytotoxicity, antimicrobial and antioxidant activities of mosses obtained from open habitats. PLoS One 2021; 16:e0257479. [PMID: 34543304 PMCID: PMC8452054 DOI: 10.1371/journal.pone.0257479] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 09/01/2021] [Indexed: 11/19/2022] Open
Abstract
Mosses are mainly the object of ecological and taxonomic research. This group of plants are still underestimated by scientists in other aspects of research. Recent research has shown that these plants contain remarkable and unique substances with high biological activity. Five species of mosses from a large urban ecosystem were identified for present study. In order to determine their biological potential, multifaceted studies were carried out, including: total phenolics content, antioxidant activity, antimicrobial and antifungal study, cytotoxicity evaluation, and scratch assay to assess pro-regenerative effect in the context of their possible use as the ingredients of biologically active cosmetics. Additionally, determination of individual phenolic compounds in selected extracts of the tested mosses was made. Research showed that Ceratodon purpureus and Dryptodon pulvinatus extracts had the greatest potential as antioxidants and antimicrobial activity. The cytotoxicity assessment indicated that the extracts from Dryptodon pulvinatus and Rhytidiadelphus squarossus exerted the strongest negative effect on mouse fibroblast line L929 viability at higher concentrations. While, the extract from Tortulla muralis best stimulated human foreskin fibroblast line HFF-1 proliferation and wound healing. The research on individual phenolic compounds content in the extracts tested indicated over 20 peaks on UPLC chromatograms. The conducted study has shown that mosses, especially so far unexplored species of open ecosystems, and e.g. epilytic habitats, may be a valuable source of biologically active substances and thus may constitute important medical and cosmetic possibilities.
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Affiliation(s)
- Grzegorz J. Wolski
- Department of Geobotany and Plant Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Łódź, Poland
| | - Beata Sadowska
- Department of Immunology and Infectious Biology, Institute of Microbiology, Biotechnology and Immunology, Faculty of Biology and Environmental Protection, University of Lodz, Łódź, Poland
| | - Marek Fol
- Department of Immunology and Infectious Biology, Institute of Microbiology, Biotechnology and Immunology, Faculty of Biology and Environmental Protection, University of Lodz, Łódź, Poland
| | - Anna Podsędek
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Łódź, Poland
| | - Dominika Kajszczak
- Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Łódź, Poland
| | - Agnieszka Kobylińska
- Department of Plant Ecophysiology, Faculty of Biology and Environmental Protection, University of Lodz, Łódź, Poland
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12
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Malyarenko OS, Malyarenko TV, Usoltseva RV, Silchenko AS, Kicha AA, Ivanchina NV, Ermakova SP. Fucoidan from brown algae Fucus evanescens potentiates the anti-proliferative efficacy of asterosaponins from starfish Asteropsis carinifera in 2D and 3D models of melanoma cells. Int J Biol Macromol 2021; 185:31-39. [PMID: 34144063 DOI: 10.1016/j.ijbiomac.2021.06.080] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 05/13/2021] [Accepted: 06/11/2021] [Indexed: 01/14/2023]
Abstract
This study was aimed to determine the efficacy of combination of fucoidan from the brown algae Fucus evanescens (FeF) or its derivatives with thornasteroside A (ThA) or asteropsiside A (AsA) from the starfish Asteropsis carinifera in combating human melanoma cells. In vitro MTS and soft agar methods were performed to determine effect of FeF, its derivatives, ThA, AsA or their combination on proliferation and colony formation of SK-MEL-28 cells in 2D and 3D culture. Desulfation of FeF, but not deacetylation, led decreasing of its Mw and anti-proliferative activity. The combinatorial effect of FeF with ThA and AsA depended on the sequences of treatment by compounds. There was additive anticancer effect of FeF with ThA or AsA during simultaneous treatment of cells. ThA and AsA were not active against SK-MEL-28 cells after their pre-treatment with FeF. Potential synergism of action was identified only when SK-MEL-28 cells were pre-treated with ThA and AsA and then by FeF. This process going through the regulation of MEK1/2/ERK1/2/MSK1 pathway and expression of the cell cycle proteins as determined by Western Blot. Thus, the combination of fucoidan with the asterosaponins opens up the prospects for the development of effective combined chemotherapeutic methods for melanoma treatment.
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Affiliation(s)
- Olesya S Malyarenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159 100-let Vladivostok Ave., 690022 Vladivostok, Russian Federation.
| | - Timofey V Malyarenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159 100-let Vladivostok Ave., 690022 Vladivostok, Russian Federation; Far Eastern Federal University, Sukhanova str. 8, 690000 Vladivostok, Russian Federation
| | - Roza V Usoltseva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159 100-let Vladivostok Ave., 690022 Vladivostok, Russian Federation.
| | - Artem S Silchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159 100-let Vladivostok Ave., 690022 Vladivostok, Russian Federation
| | - Alla A Kicha
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159 100-let Vladivostok Ave., 690022 Vladivostok, Russian Federation.
| | - Natalia V Ivanchina
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159 100-let Vladivostok Ave., 690022 Vladivostok, Russian Federation.
| | - Svetlana P Ermakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, 159 100-let Vladivostok Ave., 690022 Vladivostok, Russian Federation.
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13
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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:md19050265. [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] [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
- Correspondence: (J.-O.J.); (D.Y.)
| | - 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
- Correspondence: (J.-O.J.); (D.Y.)
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14
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Vaamonde-García C, Flórez-Fernández N, Torres MD, Lamas-Vázquez MJ, Blanco FJ, Domínguez H, Meijide-Faílde R. Study of fucoidans as natural biomolecules for therapeutical applications in osteoarthritis. Carbohydr Polym 2021; 258:117692. [PMID: 33593565 DOI: 10.1016/j.carbpol.2021.117692] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/04/2021] [Accepted: 01/12/2021] [Indexed: 02/06/2023]
Abstract
Osteoarthritis (OA) is the most prevalent articular chronic disease. Although, to date there is no cure for OA. Fucoidans, one of the main therapeutic components of brown algae, have emerged as promising molecules in OA treatment. However, the variability between fucoidans makes difficult the pursuit of the most suitable candidate to target specific pathological processes. By an in vitro experimental approach in chondrocytes and fibroblast-like synoviocytes, we observed that chemical composition of fucoidan, and specifically the phlorotannin content and the ratio sulfate:fucose, seems critically relevant for its biological activity. Nonetheless, other factors like concentration and molecular weight of the fucoidan may influence on its beneficial effects. Additionally, a cell-type dependent response was also detected. Thus, our results shed light on the potential use of fucoidans as natural molecules in the treatment of key pathological processes in the joint that favor the development of rheumatic disorders as OA.
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Affiliation(s)
- Carlos Vaamonde-García
- Tissue Engineering and Cellular Therapy Group, Department of Physiotherapy, Medicine and Biological Sciences, University of A Coruña, A Coruña, Spain; Unidad de Medicina Regenerativa, Grupo de Investigación de Reumatología (GIR), Instituto de InvestigaciónBiomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas, Universidade da Coruña (UDC), C/ As Xubias de Arriba 84, 15006, A Coruña, España; Centro de Investigaciones Científicas Avanzadas (CICA), As Carballeiras S/N, Campus de Elviña, 15071, A Coruña, España.
| | - Noelia Flórez-Fernández
- Department of Chemical Engineering, University of Vigo, Faculty of Sciences, Ourense, Spain; CINBIO, Universidade de Vigo, Departamento de Ingeniería Química, Campus Ourense, 32004 Ourense, Spain.
| | - María Dolores Torres
- Department of Chemical Engineering, University of Vigo, Faculty of Sciences, Ourense, Spain; CINBIO, Universidade de Vigo, Departamento de Ingeniería Química, Campus Ourense, 32004 Ourense, Spain.
| | - María J Lamas-Vázquez
- Tissue Engineering and Cellular Therapy Group, Department of Physiotherapy, Medicine and Biological Sciences, University of A Coruña, A Coruña, Spain.
| | - Francisco J Blanco
- Unidad de Medicina Regenerativa, Grupo de Investigación de Reumatología (GIR), Instituto de InvestigaciónBiomédica de A Coruña (INIBIC), Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas, Universidade da Coruña (UDC), C/ As Xubias de Arriba 84, 15006, A Coruña, España; Centro de Investigaciones Científicas Avanzadas (CICA), As Carballeiras S/N, Campus de Elviña, 15071, A Coruña, España.
| | - Herminia Domínguez
- Department of Chemical Engineering, University of Vigo, Faculty of Sciences, Ourense, Spain; CINBIO, Universidade de Vigo, Departamento de Ingeniería Química, Campus Ourense, 32004 Ourense, Spain.
| | - Rosa Meijide-Faílde
- Tissue Engineering and Cellular Therapy Group, Department of Physiotherapy, Medicine and Biological Sciences, University of A Coruña, A Coruña, Spain; Centro de Investigaciones Científicas Avanzadas (CICA), As Carballeiras S/N, Campus de Elviña, 15071, A Coruña, España.
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15
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Lopez V, Schäkel L, Schuh HJM, Schmidt MS, Mirza S, Renn C, Pelletier J, Lee SY, Sévigny J, Alban S, Bendas G, Müller CE. Sulfated Polysaccharides from Macroalgae Are Potent Dual Inhibitors of Human ATP-Hydrolyzing Ectonucleotidases NPP1 and CD39. Mar Drugs 2021; 19:md19020051. [PMID: 33499103 PMCID: PMC7911304 DOI: 10.3390/md19020051] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/14/2021] [Accepted: 01/15/2021] [Indexed: 12/25/2022] Open
Abstract
Extracellular ATP mediates proinflammatory and antiproliferative effects via activation of P2 nucleotide receptors. In contrast, its metabolite, the nucleoside adenosine, is strongly immunosuppressive and enhances tumor proliferation and metastasis. The conversion of ATP to adenosine is catalyzed by ectonucleotidases, which are expressed on immune cells and typically upregulated on tumor cells. In the present study, we identified sulfopolysaccharides from brown and red sea algae to act as potent dual inhibitors of the main ATP-hydrolyzing ectoenzymes, ectonucleotide pyrophosphatase/phosphodiesterase-1 (NPP1) and ecto-nucleoside triphosphate diphosphohydrolase-1 (NTPDase1, CD39), showing nano- to picomolar potency and displaying a non-competitive mechanism of inhibition. We showed that one of the sulfopolysaccharides tested as a representative example reduced adenosine formation at the surface of the human glioblastoma cell line U87 in a concentration-dependent manner. These natural products represent the most potent inhibitors of extracellular ATP hydrolysis known to date and have potential as novel therapeutics for the immunotherapy of cancer.
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Affiliation(s)
- Vittoria Lopez
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Laura Schäkel
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - H. J. Maximilian Schuh
- Pharmaceutical & Cell Biological Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (H.J.M.S.); (M.S.S.); (G.B.)
| | - Michael S. Schmidt
- Pharmaceutical & Cell Biological Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (H.J.M.S.); (M.S.S.); (G.B.)
| | - Salahuddin Mirza
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Christian Renn
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Julie Pelletier
- Centre de Recherche du CHU de Québec—Université Laval, Québec City, QC G1V 4G2, Canada; (J.P.); (J.S.)
| | - Sang-Yong Lee
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Jean Sévigny
- Centre de Recherche du CHU de Québec—Université Laval, Québec City, QC G1V 4G2, Canada; (J.P.); (J.S.)
- Départment de Microbiologie-Infectiologie et d’Immunologie, Faculté de Médecine, Université Laval, Quebec City, QC G1V 0A6, Canada
| | - Susanne Alban
- Pharmaceutical Institute, Christian-Albrechts-University of Kiel, Gutenbergstraße 76, 24118 Kiel, Germany;
| | - Gerd Bendas
- Pharmaceutical & Cell Biological Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (H.J.M.S.); (M.S.S.); (G.B.)
| | - Christa E. Müller
- Pharmaceutical & Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; (V.L.); (L.S.); (S.M.); (C.R.); (S.-Y.L.)
- PharmaCenter Bonn, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
- Correspondence: ; Tel.: +49-228-73-2301; Fax: +49-228-73-2567
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16
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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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17
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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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18
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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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Listro R, Stotani S, Rossino G, Rui M, Malacrida A, Cavaletti G, Cortesi M, Arienti C, Tesei A, Rossi D, Giacomo MD, Miloso M, Collina S. Exploring the RC-106 Chemical Space: Design and Synthesis of Novel ( E)-1-(3-Arylbut-2-en-1-yl)-4-(Substituted) Piperazine Derivatives as Potential Anticancer Agents. Front Chem 2020; 8:495. [PMID: 32695745 PMCID: PMC7338850 DOI: 10.3389/fchem.2020.00495] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 05/14/2020] [Indexed: 01/19/2023] Open
Abstract
Despite the fact that significant advances in treatment of common cancers have been achieved over the years, orphan tumors still represent an important unmet medical need. Due to their complex multifactorial origin and limited number of cases, such pathologies often have very limited treatment options and poor prognosis. In the search for new anticancer agents, our group recently identified RC-106, a Sigma receptor modulator endowed with proteasome inhibition activity. This compound showed antiproliferative activity toward different cancer cell lines, among them glioblastoma (GB) and multiple myeloma (MM), two currently unmet medical conditions. In this work, we directed our efforts toward the exploration of chemical space around RC-106 to identify new active compounds potentially useful in cancer treatment. Thanks to a combinatorial approach, we prepared 41 derivatives of the compound and evaluated their cytotoxic potential against MM and GB. Three novel potential anticancer agents have been identified.
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Affiliation(s)
- Roberta Listro
- Medicinal Chemistry and Pharmaceutical Technology Section, Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Silvia Stotani
- Medicinal Chemistry and Pharmaceutical Technology Section, Department of Drug Sciences, University of Pavia, Pavia, Italy.,Medicinal Chemistry, Taros Chemicals GmbH and Co. KG, Dortmund, Germany
| | - Giacomo Rossino
- Medicinal Chemistry and Pharmaceutical Technology Section, Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Marta Rui
- Medicinal Chemistry and Pharmaceutical Technology Section, Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Alessio Malacrida
- Experimental Neurology Unit, School of Medicine and Surgery & Milan Center for Neuroscience, University of Milan Bicocca, Monza, Italy
| | - Guido Cavaletti
- Experimental Neurology Unit, School of Medicine and Surgery & Milan Center for Neuroscience, University of Milan Bicocca, Monza, Italy
| | - Michela Cortesi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRCCS), Meldola, Italy
| | - Chiara Arienti
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRCCS), Meldola, Italy
| | - Anna Tesei
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRCCS), Meldola, Italy
| | - Daniela Rossi
- Medicinal Chemistry and Pharmaceutical Technology Section, Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Marcello Di Giacomo
- Medicinal Chemistry and Pharmaceutical Technology Section, Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - Mariarosaria Miloso
- Experimental Neurology Unit, School of Medicine and Surgery & Milan Center for Neuroscience, University of Milan Bicocca, Monza, Italy
| | - Simona Collina
- Medicinal Chemistry and Pharmaceutical Technology Section, Department of Drug Sciences, University of Pavia, Pavia, Italy
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20
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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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21
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Shanmugapriya K, Kim H, Kang HW. Epidermal growth factor receptor conjugated fucoidan/alginates loaded hydrogel for activating EGFR/AKT signaling pathways in colon cancer cells during targeted photodynamic therapy. Int J Biol Macromol 2020; 158:S0141-8130(20)33150-0. [PMID: 32387601 DOI: 10.1016/j.ijbiomac.2020.05.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/30/2020] [Accepted: 05/01/2020] [Indexed: 12/15/2022]
Abstract
In the present study, we developed epidermal growth factor receptor conjugated fucoidan/alginate loaded hydrogels for targeting the delivery of hydrogel through the signaling pathway of the epidermal growth factor receptor (EGFR) to treat colon cancer. We aim to develop a drug delivery system of chlorin e6 encapsulated in hydrogel and tag it with EFGR to target cancer cells with low toxicity and limited side effects by using photodynamic therapy (PDT). The characterization and in vitro studies were conducted to evaluate the efficiency of the EGFR-hydrogel in colon cancer cells. Also, western blot analysis was used to assess protein expression levels. The in vitro results confirmed significant cell viability, proliferation, and migration of hydrogel in colon cancer. The cellular effects of the EFGR/AKT pathway were cell proliferation, inhibition of apoptosis, cell cycle progression, and cell survival and migration of colon cancer because of significant protein expression levels. The data suggested that hydrogel appears to be a promising targeting approach-PDT for treating colon cancer. Further in vivo studies are needed to conclude the overexpression level of EGFR on cancer cells. The study concluded that EGFR-H improved the targeting efficiency of hydrogel in colon cancer.
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Affiliation(s)
- Karuppusamy Shanmugapriya
- Department of Biomedical Engineering and Center for Marine-Integrated Biomedical Technology (BK 21 Plus), Pukyong National University, Busan, South Korea
| | - Hyejin Kim
- Interdisciplinary program of Biomedical Mechanical & Electrical Engineering, Pukyong National University, Busan, South Korea
| | - Hyun Wook Kang
- Department of Biomedical Engineering and Center for Marine-Integrated Biomedical Technology (BK 21 Plus), Pukyong National University, Busan, South Korea; Interdisciplinary program of Biomedical Mechanical & Electrical Engineering, Pukyong National University, Busan, South Korea.
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22
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Glycol Chitosan-Docosahexaenoic Acid Liposomes for Drug Delivery: Synergistic Effect of Doxorubicin-Rapamycin in Drug-Resistant Breast Cancer. Mar Drugs 2019; 17:md17100581. [PMID: 31614820 PMCID: PMC6835303 DOI: 10.3390/md17100581] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/08/2019] [Accepted: 10/11/2019] [Indexed: 12/12/2022] Open
Abstract
Marine ecosystems are the most prevalent ecosystems on the planet, providing a diversity of living organisms and resources. The development of nanotechnology may provide solutions for utilizing these thousands of potential compounds as marine pharmaceuticals. Here, we designed a liposomal glycol chitosan formulation to load both doxorubicin (DOX) and rapamycin (RAPA), and then evaluated its therapeutic potential in a prepared drug-resistant cell model. We explored the stability of the drug delivery system by changing the physiological conditions and characterized its physicochemical properties. The electrostatic complexation between DOX-glycol chitosan and docosahexaenoic acid RAPA-liposomes (GC-DOX/RAPA ω-liposomes) was precisely regulated, resulting in particle size of 131.3 nm and zeta potential of -14.5 mV. The well-characterized structure of GC-DOX/RAPA ω-liposomes led to high loading efficiencies of 4.1% for DOX and 6.2% for RAPA. Also, GC-DOX/RAPA ω-liposomes exhibited high colloidal stability under physiological conditions and synergistic anti-cancer effects on DOX-resistant MDA-MB-231 cells, while showing pH-sensitive drug release behavior. Our results provided a viable example of marine pharmaceuticals with therapeutic potential for treating drug-resistant tumors using an efficient and safe drug delivery system.
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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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24
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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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