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Pereira D, Palmeira A, Lima É, Vasconcelos V, Pinto M, Correia-da-Silva M, Almeida JR, Cidade H. Chalcone derivatives as promising antifoulants: Molecular optimization, bioactivity evaluation and performance in coatings. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 280:116560. [PMID: 38865941 DOI: 10.1016/j.ecoenv.2024.116560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 06/03/2024] [Accepted: 06/04/2024] [Indexed: 06/14/2024]
Abstract
Marine biofouling remains a huge concern for maritime industries and for environmental health. Although the current biocide-based antifouling coatings can prevent marine biofouling, their use has been associated with toxicity for the marine environment, being urgent to find sustainable alternatives. Previously, our research group has identified a prenylated chalcone (1) with promising antifouling activity against the settlement of larvae of the macrofouling species Mytilus galloprovincialis (EC50 = 16.48 µM and LC50 > 200 µM) and lower ecotoxicity when compared to Econea®, a commercial antifouling agent in use. Herein, a series of chalcone 1 analogues were designed and synthesized in order to obtain optimized antifouling compounds with improved potency while maintaining low ecotoxicity. Compounds 8, 15, 24, and 27 showed promising antifouling activity against the settlement of M. galloprovincialis larvae, being dihydrochalcone 27 the most potent. The effect of compound 24 was associated with the inhibition of acetylcholinesterase activity. Among the synthesized compounds, compound 24 also showed potent complementary activity against Navicula sp. (EC50 = 4.86 µM), similarly to the lead chalcone 1 (EC50 = 6.75 µM). Regarding the structure-activity relationship, the overall results demonstrate that the substitution of the chalcone of the lead compound 1 by a dihydrochalcone scaffold resulted in an optimized potency against the settlement of mussel larvae. Marine polyurethane (PU)-based coatings containing the best performed compound concerning anti-settlement activity (dihydrochalcone 27) were prepared, and mussel larvae adherence was reduced compared to control PU coatings.
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Affiliation(s)
- Daniela Pereira
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, Porto 4050-313, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, Matosinhos 4450-208, Portugal
| | - Andreia Palmeira
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, Porto 4050-313, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, Matosinhos 4450-208, Portugal
| | - Érica Lima
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, Matosinhos 4450-208, Portugal
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, Matosinhos 4450-208, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, Porto 4069-007, Portugal
| | - Madalena Pinto
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, Porto 4050-313, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, Matosinhos 4450-208, Portugal
| | - Marta Correia-da-Silva
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, Porto 4050-313, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, Matosinhos 4450-208, Portugal
| | - Joana R Almeida
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, Matosinhos 4450-208, Portugal.
| | - Honorina Cidade
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira 228, Porto 4050-313, Portugal; Interdisciplinary Centre of Marine and Environmental Research (CIIMAR), University of Porto, Edifício do Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos, S/N, Matosinhos 4450-208, Portugal.
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Cahill PL, Moodie LWK, Hertzer C, Pinori E, Pavia H, Hellio C, Brimble MA, Svenson J. Creating New Antifoulants Using the Tools and Tactics of Medicinal Chemistry. Acc Chem Res 2024; 57:399-412. [PMID: 38277792 DOI: 10.1021/acs.accounts.3c00733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2024]
Abstract
The unwanted accumulation of marine micro- and macroorganisms such as algae and barnacles on submerged man-made structures and vessel hulls is a major challenge for any marine operation. Known as biofouling, this problem leads to reduced hydrodynamic efficiency, significantly increased fuel usage, microbially induced corrosion, and, if not managed appropriately, eventual loss of both performance and structural integrity. Ship hull biofouling in the international maritime transport network conservatively accounts for 0.6% of global carbon emissions, highlighting the global scale and the importance of this problem. Improved antifouling strategies to limit surface colonization are paramount for essential activities such as shipping, aquaculture, desalination, and the marine renewable energy sector, representing both a multibillion dollar cost and a substantial practical challenge. From an ecological perspective, biofouling is a primary contributor to the global spread of invasive marine species, which has extensive implications for the marine environment.Historically, heavy metal-based toxic biocides have been used to control biofouling. However, their unwanted collateral ecological damage on nontarget species and bioaccumulation has led to recent global bans. With expanding human activities within aquaculture and offshore energy, it is both urgent and apparent that environmentally friendly surface protection remains key for maintaining the function of both moving and stationary marine structures. Biofouling communities are typically a highly complex network of both micro- and macroorganisms, representing a broad section of life from bacteria to macrophytes and animals. Given this diversity, it is unrealistic to expect that a single antifouling "silver bullet" will prevent colonization with the exception of generally toxic biocides. For that reason, modern and future antifouling solutions are anticipated to rely on novel coating technologies and "combination therapies" where mixtures of narrow-spectrum bioactive components are used to provide coverage across fouling species. In contrast to the existing cohort of outdated, toxic antifouling strategies, such as copper- and tributyltin-releasing paints, modern drug discovery techniques are increasingly being employed for the rational design of effective yet safe alternatives. The challenge for a medicinal chemistry approach is to effectively account for the large taxonomic diversity among fouling organisms combined with a lack of well-defined conserved molecular targets within most taxa.The current Account summarizes our work employing the tools of modern medicinal chemistry to discover, modify, and develop optimized and scalable antifouling solutions based on naturally occurring antifouling and repelling compounds from both marine and terrestrial sources. Inspiration for rational design comes from targeted studies on allelopathic natural products, natural repelling peptides, and secondary metabolites from sessile marine organisms with clean exteriors, which has yielded several efficient and promising antifouling leads.
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Affiliation(s)
- Patrick L Cahill
- Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand
| | - Lindon W K Moodie
- Drug Design and Discovery, Department of Medicinal Chemistry, Biomedical Centre, Uppsala University, 75123 Uppsala, Sweden
| | - Cora Hertzer
- Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand
| | - Emiliano Pinori
- RISE Research Institutes of Sweden, Division for Material and Production, 504 62 Borås, Sweden
| | - Henrik Pavia
- Department of Marine Sciences - Tjärnö, University of Gothenburg, SE-452 96 Strömstad, Sweden
| | - Claire Hellio
- Univ. Brest, Laboratoire des Sciences de l'Environnement MARin (LEMAR), CNRS, IRD, IFREMER, Brest 29285, France
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand
| | - Johan Svenson
- Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand
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Vrabec R, Blunden G, Cahlíková L. Natural Alkaloids as Multi-Target Compounds towards Factors Implicated in Alzheimer's Disease. Int J Mol Sci 2023; 24:ijms24054399. [PMID: 36901826 PMCID: PMC10003045 DOI: 10.3390/ijms24054399] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 02/25/2023] Open
Abstract
Alzheimer's disease (AD) is the most common cause of dementia in elderly people; currently, there is no efficient treatment. Considering the increase in life expectancy worldwide AD rates are predicted to increase enormously, and thus the search for new AD drugs is urgently needed. A great amount of experimental and clinical evidence indicated that AD is a complex disorder characterized by widespread neurodegeneration of the CNS, with major involvement of the cholinergic system, causing progressive cognitive decline and dementia. The current treatment, based on the cholinergic hypothesis, is only symptomatic and mainly involves the restoration of acetylcholine (ACh) levels through the inhibition of acetylcholinesterase (AChE). Since the introduction of the Amaryllidaceae alkaloid galanthamine as an antidementia drug in 2001, alkaloids have been one of the most attractive groups for searching for new AD drugs. The present review aims to comprehensively summarize alkaloids of various origins as multi-target compounds for AD. From this point of view, the most promising compounds seem to be the β-carboline alkaloid harmine and several isoquinoline alkaloids since they can simultaneously inhibit several key enzymes of AD's pathophysiology. However, this topic remains open for further research on detailed mechanisms of action and the synthesis of potentially better semi-synthetic analogues.
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Affiliation(s)
- Rudolf Vrabec
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Gerald Blunden
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2DT, UK
| | - Lucie Cahlíková
- Secondary Metabolites of Plants as Potential Drugs Research Group, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
- Correspondence:
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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5
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Lins Alves LK, Cechinel Filho V, de Souza RLR, Furtado-Alle L. BChE inhibitors from marine organisms - A review. Chem Biol Interact 2022; 367:110136. [PMID: 36096160 DOI: 10.1016/j.cbi.2022.110136] [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: 04/12/2022] [Revised: 08/12/2022] [Accepted: 08/23/2022] [Indexed: 11/18/2022]
Abstract
Acetylcholine is a key neurotransmitter for brain and muscle function, that has its levels decreased in the brain of people with Alzheimer's Disease (AD). Cholinesterase inhibitors are medicines that decrease the breakdown of acetylcholine, through the inhibition of acetyl- and butyrylcholinesterase enzymes. Despite the fact that butyrylcholinesterase activity rises with the disease, while acetylcholinesterase activity declines, the cholinesterase inhibitors that are currently commercialized inhibit either acetylcholinesterase or both enzymes. The development of selective butyrylcholinesterase inhibitors is a promising strategy in the search for new drugs acting against AD. The marine environment is a rich source of molecules with therapeutic potential, which can provide compounds more easily than traditional methods, with reduced toxicity risks compared to synthetic molecules. This review comprises articles from 2003 to 2020, that assessed the butyrylcholinesterase inhibitory activities from marine organisms, considering their crude extracts and isolated compounds. Part of the articles reported a multi-target activity, inhibiting also other AD-related enzymes. Some of the marine compounds reported here have shown an excellent potential for butyrylcholinesterase inhibition compared to standard inhibitors. Further studies of some compounds reported here may lead to the development of a new treatment for AD.
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Affiliation(s)
- Luana Kamarowski Lins Alves
- Department of Genetics, Federal University of Paraná, Av. Coronel Francisco Heráclito dos Santos, 210 - Jardim das Américas, 81530-001, Curitiba, PR, Brazil.
| | - Valdir Cechinel Filho
- Post-graduation Program of Pharmaceutical Sciences (PPGCF), Chemical-Pharmaceutical Research Center (NIQFAR), University of Itajaí Valley (UNIVALI), R. Uruguai, 458 - Centro, 88302-901, Itajaí, SC, Brazil
| | - Ricardo Lehtonen Rodrigues de Souza
- Department of Genetics, Federal University of Paraná, Av. Coronel Francisco Heráclito dos Santos, 210 - Jardim das Américas, 81530-001, Curitiba, PR, Brazil
| | - Lupe Furtado-Alle
- Department of Genetics, Federal University of Paraná, Av. Coronel Francisco Heráclito dos Santos, 210 - Jardim das Américas, 81530-001, Curitiba, PR, Brazil
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Elumalai V, Trobec T, Grundner M, Labriere C, Frangež R, Sepčić K, Hansen JH, Svenson J. Development of potent cholinesterase inhibitors based on a marine pharmacophore. Org Biomol Chem 2022; 20:5589-5601. [PMID: 35796650 DOI: 10.1039/d2ob01064j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The management of neurological disorders such as dementia associated with Alzheimer's or Parkinson's disease includes the use of cholinesterase inhibitors. These compounds can slow down the progression of these diseases and can also be used in the treatment of glaucoma and myasthenia gravis. The majority of the cholinesterase inhibitors used in the clinic are derived from natural products and our current paper describes the use of a small marine pharmacophore to develop potent and selective cholinesterase inhibitors. Fourteen small inhibitors were designed based on recent discoveries about the inhibitory potential of a range of related marine secondary metabolites. The compounds were evaluated, in kinetic enzymatic assays, for their ability to inhibit three different cholinesterase enzymes and it was shown that compounds with a high inhibitory activity towards electric eel and human recombinant acetylcholinesterase (IC50 between 20-70 μM) could be prepared. It was also shown that this compound class was particularly active against horse serum butyrylcholinesterase, with IC50 values between 0.8-16 μM, which is an order of magnitude more potent than the clinically used positive control neostigmine. The compounds were further tested for off-target toxicity against both human umbilical vein endothelial cells and bovine and human erythrocytes and were shown to display a low mammalian cellular toxicity. Overall, the study illustrates how the brominated dipeptide marine pharmacophore can be used as a versatile natural scaffold for the design of potent, and selective cholinesterase inhibitors.
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Affiliation(s)
- Vijayaragavan Elumalai
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037, Tromsø, Norway.
| | - Tomaž Trobec
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Maja Grundner
- Department of Biology, Biotechnical Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Christophe Labriere
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037, Tromsø, Norway.
| | - Robert Frangež
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Kristina Sepčić
- Department of Biology, Biotechnical Faculty, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Jørn H Hansen
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037, Tromsø, Norway.
| | - Johan Svenson
- Cawthron Institute, 98 Halifax Street East, Nelson 7010, New Zealand
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Gaudêncio SP, Pereira F. Predicting Antifouling Activity and Acetylcholinesterase Inhibition of Marine-Derived Compounds Using a Computer-Aided Drug Design Approach. Mar Drugs 2022; 20:md20020129. [PMID: 35200658 PMCID: PMC8879326 DOI: 10.3390/md20020129] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/28/2022] [Accepted: 02/06/2022] [Indexed: 11/19/2022] Open
Abstract
Biofouling is the undesirable growth of micro- and macro-organisms on artificial water-immersed surfaces, which results in high costs for the prevention and maintenance of this process (billion €/year) for aquaculture, shipping and other industries that rely on coastal and off-shore infrastructure. To date, there are still no sustainable, economical and environmentally safe solutions to overcome this challenging phenomenon. A computer-aided drug design (CADD) approach comprising ligand- and structure-based methods was explored for predicting the antifouling activities of marine natural products (MNPs). In the CADD ligand-based method, 141 organic molecules extracted from the ChEMBL database and literature with antifouling screening data were used to build the quantitative structure–activity relationship (QSAR) classification model. An overall predictive accuracy score of up to 71% was achieved with the best QSAR model for external and internal validation using test and training sets. A virtual screening campaign of 14,492 MNPs from Encinar’s website and 14 MNPs that are currently in the clinical pipeline was also carried out using the best QSAR model developed. In the CADD structure-based approach, the 125 MNPs that were selected by the QSAR approach were used in molecular docking experiments against the acetylcholinesterase enzyme. Overall, 16 MNPs were proposed as the most promising marine drug-like leads as antifouling agents, e.g., macrocyclic lactam, macrocyclic alkaloids, indole and pyridine derivatives.
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Affiliation(s)
- Susana P. Gaudêncio
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal;
- UCIBIO—Applied Molecular Biosciences Unit, Department of Chemistry, Blue Biotechnology and Biomedicine Lab, NOVA School of Science and Technology, NOVA University of Lisbon, 2819-516 Caparica, Portugal
| | - Florbela Pereira
- LAQV, Department of Chemistry, NOVA School of Science and Technology, NOVA University of Lisbon, 2829-516 Caparica, Portugal
- Correspondence:
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Lima E, Medeiros J. Marine Organisms as Alkaloid Biosynthesizers of Potential Anti-Alzheimer Agents. Mar Drugs 2022; 20:75. [PMID: 35049930 PMCID: PMC8780771 DOI: 10.3390/md20010075] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 01/11/2022] [Accepted: 01/11/2022] [Indexed: 12/12/2022] Open
Abstract
The incidence of neurodegenerative diseases, such as Alzheimer's disease (AD), increases continuously demanding the urgent development of anti-Alzheimer's agents. Marine organisms (MO) have to create their own defenses due to the adverse environment where they live and so synthesize several classes of compounds, such as akaloids, to defend themselves. Therefore, the identification of marine natural products with neuroprotective effects is a necessity. Being that AD is not only a genetic but also an environmental complex disease, a treatment for AD remains to discover. As the major clinical indications (CI) of AD are extracellular plaques formed by β-amyloid (Aβ) protein, intracellular neurofibrillary tangles (NFTs) formed by hyper phosphorylated τ-protein, uncommon inflammatory response and neuron apoptosis and death caused by oxidative stress, alkaloids that may decrease CI, might be used against AD. Most of the alkalolids with those properties are derivatives of the amino acid tryptophan mainly with a planar indole scaffold. Certainly, alkaloids targeting more than one CI, multitarget-directed ligands (MTDL), have the potential to become a lead in AD treatment. Alkaloids to have a maximum of activity against CI, should be planar and contain halogens and amine quaternization.
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Affiliation(s)
- Elisabete Lima
- Faculty of Science and Technology (FCT), Institute of Agricultural and Environmental Research and Technology (IITAA), University of Azores, 9500-321 Ponta Delgada, São Miguel, Açores, Portugal;
| | - Jorge Medeiros
- Faculty of Science and Technology (FCT), Biotechnology Centre of Azores (CBA), University of Azores, 9500-321 Ponta Delgada, São Miguel, Açores, Portugal
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Niu S, Liu D, Shao Z, Huang J, Fan A, Lin W. Chlorinated metabolites with antibacterial activities from a deep-sea-derived Spiromastix fungus. RSC Adv 2021; 11:29661-29667. [PMID: 35479535 PMCID: PMC9041095 DOI: 10.1039/d1ra05736g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 08/20/2021] [Indexed: 11/21/2022] Open
Abstract
Chromatographic separation of the solid cultures of a deep-sea-derived Spiromastix fungus (MCCC 3A00308) resulted in the isolation of eight compounds. Their structures were identified on the basis of the spectroscopic data. Compounds 1–8 are classified as depsidone-type (1–4), isocoumarin-type (5 and 6), and benzothiazole-type (7 and 8), of which 1–7 are new compounds and 1–3 along with 5 and 6 are chlorinated. Compound 3 is characterized by trichlorination and shows potent activities against Gram-positive pathogenic bacteria including Staphylococcus aureus ATCC 25923, Bacillus thuringiensis ATCC 10792, and Bacillus subtilis CMCC 63501, with minimum inhibitory concentration (MIC) values ranging from 0.5 to 1.0 μg mL−1. This study extends the chemical diversity of chlorinated natural products from marine-derived fungi and provides a promising lead for the development of antibacterial agents. Chromatographic separation of the solid cultures of a deep-sea-derived Spiromastix fungus (MCCC 3A00308) resulted in the isolation of five chlorinated compounds with antibacterial activities.![]()
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Affiliation(s)
- Siwen Niu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China .,Third Institute of Oceanography, SOA Xiamen 361005 P. R. China
| | - Dong Liu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China
| | - Zongze Shao
- Third Institute of Oceanography, SOA Xiamen 361005 P. R. China
| | - Jiang Huang
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China
| | - Aili Fan
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University Beijing 100191 P. R. China .,Institute of Ocean Research, Ningbo Institute of Marine Medicine, Peking University Beijing 100191 P. R. China
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10
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Hafez Ghoran S, Kijjoa A. Marine-Derived Compounds with Anti-Alzheimer's Disease Activities. Mar Drugs 2021; 19:410. [PMID: 34436249 PMCID: PMC8399123 DOI: 10.3390/md19080410] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 07/17/2021] [Accepted: 07/22/2021] [Indexed: 12/21/2022] Open
Abstract
Alzheimer's disease (AD) is an irreversible and progressive brain disorder that slowly destroys memory and thinking skills, and, eventually, the ability to perform simple tasks. As the aging population continues to increase exponentially, AD has become a big concern for society. Therefore, neuroprotective compounds are in the spotlight, as a means to tackle this problem. On the other hand, since it is believed-in many cultures-that marine organisms in an individual diet cannot only improve brain functioning, but also slow down its dysfunction, many researchers have focused on identifying neuroprotective compounds from marine resources. The fact that the marine environment is a rich source of structurally unique and biologically and pharmacologically active compounds, with unprecedented mechanisms of action, marine macroorganisms, such as tunicates, corals, sponges, algae, as well as microorganisms, such as marine-derived bacteria, actinomycetes, and fungi, have been the target sources of these compounds. Therefore, this literature review summarizes and categorizes various classes of marine-derived compounds that are able to inhibit key enzymes involved in AD, including acetylcholinesterase (AChE), butyrylcholinesterase (BuChE), β-secretase (BACE-1), and different kinases, together with the related pathways involved in the pathogenesis of AD. The compounds discussed herein are emerging as promising anti-AD activities for further in-depth in vitro and in vivo investigations, to gain more insight of their mechanisms of action and for the development of potential anti-AD drug leads.
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Affiliation(s)
- Salar Hafez Ghoran
- Department of Chemistry, Faculty of Science, Golestan University, Gorgan 439361-79142, Iran;
- Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj 75919-94779, Iran
| | - Anake Kijjoa
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar and CIIMAR, Rua de Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal
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11
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Bracegirdle J, Stevenson LJ, Sharrock AV, Page MJ, Vorster JA, Owen JG, Ackerley DF, Keyzers RA. Hydrated Rubrolides from the New Zealand Tunicate Synoicum kuranui. JOURNAL OF NATURAL PRODUCTS 2021; 84:544-547. [PMID: 33496582 DOI: 10.1021/acs.jnatprod.0c01248] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
LCMS analysis of an extract of the New Zealand tunicate Synoicum kuranui showed evidence for numerous new rubrolides. Following a mass spectrometry-guided isolation procedure, new hydrated rubrolides V and W (5 and 6), along with previously reported rubrolide G (3), were isolated and characterized using MS and NMR. The anti-bacterial and cell cytotoxic activity of the compounds were compared to the potent anti-MRSA compound rubrolide A; hydration across the C-5/C-6 bond was shown to abrogate antibacterial activity.
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Affiliation(s)
- Joe Bracegirdle
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1142, New Zealand
| | - Luke J Stevenson
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1142, New Zealand
| | - Abigail V Sharrock
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1142, New Zealand
| | - Michael J Page
- National Institute of Water & Atmospheric Research (NIWA), P.O. Box 893, Nelson 7010, New Zealand
| | | | - Jeremy G Owen
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1142, New Zealand
| | - David F Ackerley
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1142, New Zealand
| | - Robert A Keyzers
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1142, New Zealand
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Pereira D, Gonçalves C, Martins BT, Palmeira A, Vasconcelos V, Pinto M, Almeida JR, Correia-da-Silva M, Cidade H. Flavonoid Glycosides with a Triazole Moiety for Marine Antifouling Applications: Synthesis and Biological Activity Evaluation. Mar Drugs 2020; 19:5. [PMID: 33374188 PMCID: PMC7823860 DOI: 10.3390/md19010005] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 12/19/2020] [Accepted: 12/21/2020] [Indexed: 01/28/2023] Open
Abstract
Over the last decades, antifouling coatings containing biocidal compounds as active ingredients were used to prevent biofouling, and eco-friendly alternatives are needed. Previous research from our group showed that polymethoxylated chalcones and glycosylated flavones obtained by synthesis displayed antifouling activity with low toxicity. In this work, ten new polymethoxylated flavones and chalcones were synthesized for the first time, including eight with a triazole moiety. Eight known flavones and chalcones were also synthesized and tested in order to construct a quantitative structure-activity relationship (QSAR) model for these compounds. Three different antifouling profiles were found: three compounds (1b, 11a and 11b) exhibited anti-settlement activity against a macrofouling species (Mytilus galloprovincialis), two compounds (6a and 6b) exhibited inhibitory activity against the biofilm-forming marine bacteria Roseobacter litoralis and one compound (7b) exhibited activity against both mussel larvae and microalgae Navicula sp. Hydrogen bonding acceptor ability of the molecule was the most significant descriptor contributing positively to the mussel larvae anti-settlement activity and, in fact, the triazolyl glycosylated chalcone 7b was the most potent compound against this species. The most promising compounds were not toxic to Artemia salina, highlighting the importance of pursuing the development of new synthetic antifouling agents as an ecofriendly and sustainable alternative for the marine industry.
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Affiliation(s)
- Daniela Pereira
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal; (D.P.); (B.T.M.); (A.P.); (M.P.); (H.C.)
- CIIMAR—Centro Interdisciplinar de Investigação Marinha e Ambiental, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal; (C.G.); (V.V.)
| | - Catarina Gonçalves
- CIIMAR—Centro Interdisciplinar de Investigação Marinha e Ambiental, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal; (C.G.); (V.V.)
| | - Beatriz T. Martins
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal; (D.P.); (B.T.M.); (A.P.); (M.P.); (H.C.)
| | - Andreia Palmeira
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal; (D.P.); (B.T.M.); (A.P.); (M.P.); (H.C.)
- CIIMAR—Centro Interdisciplinar de Investigação Marinha e Ambiental, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal; (C.G.); (V.V.)
| | - Vitor Vasconcelos
- CIIMAR—Centro Interdisciplinar de Investigação Marinha e Ambiental, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal; (C.G.); (V.V.)
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre S/N, 4169-007 Porto, Portugal
| | - Madalena Pinto
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal; (D.P.); (B.T.M.); (A.P.); (M.P.); (H.C.)
- CIIMAR—Centro Interdisciplinar de Investigação Marinha e Ambiental, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal; (C.G.); (V.V.)
| | - Joana R. Almeida
- CIIMAR—Centro Interdisciplinar de Investigação Marinha e Ambiental, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal; (C.G.); (V.V.)
| | - Marta Correia-da-Silva
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal; (D.P.); (B.T.M.); (A.P.); (M.P.); (H.C.)
- CIIMAR—Centro Interdisciplinar de Investigação Marinha e Ambiental, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal; (C.G.); (V.V.)
| | - Honorina Cidade
- Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, R. Jorge de Viterbo Ferreira 228, 4050-313 Porto, Portugal; (D.P.); (B.T.M.); (A.P.); (M.P.); (H.C.)
- CIIMAR—Centro Interdisciplinar de Investigação Marinha e Ambiental, Avenida General Norton de Matos, S/N, 4450-208 Matosinhos, Portugal; (C.G.); (V.V.)
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Labriere C, Elumalai V, Staffansson J, Cervin G, Le Norcy T, Denardou H, Réhel K, Moodie LWK, Hellio C, Pavia H, Hansen JH, Svenson J. Phidianidine A and Synthetic Analogues as Naturally Inspired Marine Antifoulants. JOURNAL OF NATURAL PRODUCTS 2020; 83:3413-3423. [PMID: 33054188 DOI: 10.1021/acs.jnatprod.0c00881] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Stationary and slow-moving marine organisms regularly employ a natural product chemical defense to prevent being colonized by marine micro- and macroorganisms. While these natural antifoulants can be structurally diverse, they often display highly conserved chemistries and physicochemical properties, suggesting a natural marine antifouling pharmacophore. In our current report, we investigate the marine natural product phidianidine A, which displays several chemical properties found in highly potent marine antifoulants. Phidianidine A and synthetic analogues were screened against the settlement and metamorphosis of Amphibalanus improvisus cyprids, and several of the compounds displayed inhibitory activities at low micromolar concentrations with IC50 values down to 0.7 μg/mL observed. The settlement study highlights that phidianidine A is a potent natural antifoulant and that the scaffold can be tuned to generate simpler and improved synthetic analogues. The bioactivity is closely linked to the size of the compound and to its basicity. The study also illustrates that active analogues can be prepared in the absence of the natural constrained 1,2,4-oxadiazole ring. A synthetic lead analogue of phidianidine A was incorporated in a coating and included in antifouling field trials, where it was shown that the coating induced potent inhibition of marine bacteria and microalgae settlement.
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Affiliation(s)
- Christophe Labriere
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Vijayaragavan Elumalai
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Jannie Staffansson
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Gunnar Cervin
- Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, SE-452 96 Strömstad, Sweden
| | - Tiffany Le Norcy
- Univ. Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Hugo Denardou
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Karine Réhel
- Univ. Bretagne-Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France
| | - Lindon W K Moodie
- Department of Medicinal Chemistry and Uppsala Antibiotic Centre, Biomedical Centre, Uppsala University, 75123 Uppsala, Sweden
| | - Claire Hellio
- Univ. Brest, Laboratoire des Sciences de l'Environnement MARin (LEMAR), CNRS, IRD, IFREMER, Brest 29285, France
| | - Henrik Pavia
- Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, SE-452 96 Strömstad, Sweden
| | - Jørn H Hansen
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Johan Svenson
- Department of Chemistry, Chemical Synthesis and Analysis Group, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
- Department of Chemistry, Biomaterial & Textile, RISE Research Institutes of Sweden, Box 857, 501 15 Borås, Sweden
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Zhang M, Ding X, Kang J, Gao Y, Wang Z, Wang Q. Marine Natural Product for Pesticide Candidate: Pulmonarin Alkaloids as Novel Antiviral and Anti-Phytopathogenic-Fungus Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11350-11357. [PMID: 32956590 DOI: 10.1021/acs.jafc.0c04868] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Plant diseases are seriously endangering agricultural production. The emergence of drug resistance has brought great challenges to the prevention and control of plant diseases. There is an urgent need for the emergence of new drug candidates. In this work, we achieved the efficient synthesis of pulmonarins A and B in 64% and 59% overall yield, respectively. Pulmonarins A and B were found to have good antiviral activities against tobacco mosaic virus (TMV) for the first time. A series of pulmonarin derivatives were designed, synthesized, and evaluated for their antiviral and fungicidal activities systematically. Most compounds displayed higher anti-TMV activities than commercial ribavirin. Compounds 6a, 6c, and 6n with better inactivation effects than ningnanmycin emerged as new antiviral candidates. We selected 6c for further antiviral mechanism research, which revealed that it could inhibit virus assembly by interacting with TMV coat protein (CP). The molecular docking results further confirmed that these compounds could interact with CP through hydrogen bonding. These compounds also displayed broad spectrum fungicidal activities. Especially compound 6u with prominent antifungal activity emerged as a new fungicidal candidate for further research. The current work provides a reference for understanding the application of pulmonarin alkaloids in plant protection.
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Affiliation(s)
- Mingjun Zhang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Xin Ding
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Jin Kang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Yongyue Gao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Ziwen Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
| | - Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071, China
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Marine Terpenoids from Polar Latitudes and Their Potential Applications in Biotechnology. Mar Drugs 2020; 18:md18080401. [PMID: 32751369 PMCID: PMC7459527 DOI: 10.3390/md18080401] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 01/03/2023] Open
Abstract
Polar marine biota have adapted to thrive under one of the ocean’s most inhospitable scenarios, where extremes of temperature, light photoperiod and ice disturbance, along with ecological interactions, have selected species with a unique suite of secondary metabolites. Organisms of Arctic and Antarctic oceans are prolific sources of natural products, exhibiting wide structural diversity and remarkable bioactivities for human applications. Chemical skeletons belonging to terpene families are the most commonly found compounds, whereas cytotoxic antimicrobial properties, the capacity to prevent infections, are the most widely reported activities from these environments. This review firstly summarizes the regulations on access and benefit sharing requirements for research in polar environments. Then it provides an overview of the natural product arsenal from Antarctic and Arctic marine organisms that displays promising uses for fighting human disease. Microbes, such as bacteria and fungi, and macroorganisms, such as sponges, macroalgae, ascidians, corals, bryozoans, echinoderms and mollusks, are the main focus of this review. The biological origin, the structure of terpenes and terpenoids, derivatives and their biotechnological potential are described. This survey aims to highlight the chemical diversity of marine polar life and the versatility of this group of biomolecules, in an effort to encourage further research in drug discovery.
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Targeted Isolation of Rubrolides from the New Zealand Marine Tunicate Synoicum kuranui. Mar Drugs 2020; 18:md18070337. [PMID: 32605132 PMCID: PMC7401252 DOI: 10.3390/md18070337] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 12/21/2022] Open
Abstract
Global natural products social (GNPS) molecular networking is a useful tool to categorize chemical space within samples and streamline the discovery of new natural products. Here, we demonstrate its use in chemically profiling the extract of the marine tunicate Synoicum kuranui, comprised of many previously reported rubrolides, for new chemical entities. Within the rubrolide cluster, two masses that did not correspond to previously reported congeners were detected, and, following MS-guided fractionation, led to the isolation of new methylated rubrolides T (3) and (Z/E)–U (4). Both compounds showed strong growth inhibitory activity against the Gram-positive bacteria Bacillus subtilis, with minimum inhibitory concentration (MIC) values of 0.41 and 0.91 μM, respectively.
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Hansen IKØ, Isaksson J, Poth AG, Hansen KØ, Andersen AJC, Richard CSM, Blencke HM, Stensvåg K, Craik DJ, Haug T. Isolation and Characterization of Antimicrobial Peptides with Unusual Disulfide Connectivity from the Colonial Ascidian Synoicum turgens. Mar Drugs 2020; 18:md18010051. [PMID: 31940927 PMCID: PMC7024374 DOI: 10.3390/md18010051] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 01/08/2020] [Accepted: 01/09/2020] [Indexed: 11/16/2022] Open
Abstract
This study reports the isolation of two novel cysteine-rich antibacterial peptides, turgencin A and turgencin B, along with their oxidized derivatives, from the Arctic marine colonial ascidian Synoicum turgens. The peptides are post-translationally modified, containing six cysteines with an unusual disulfide connectivity of Cys1-Cys6, Cys2-Cys5, and Cys3-Cys4 and an amidated C-terminus. Furthermore, the peptides contain methionine residues resulting in the isolation of peptides with different degrees of oxidation. The most potent peptide, turgencin AMox1 with one oxidized methionine, displayed antimicrobial activity against both Gram-negative and Gram-positive bacteria with a minimum inhibitory concentration (MIC) as low as 0.4 µM against selected bacterial strains. In addition, the peptide inhibited the growth of the melanoma cancer cell line A2058 (IC50 = 1.4 µM) and the human fibroblast cell line MRC-5 (IC50 = 4.8 µM). The results from this study show that natural peptides isolated from marine tunicates have the potential to be promising drug leads.
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Affiliation(s)
- Ida K. Ø. Hansen
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway (C.S.M.R.); (H.-M.B.); (K.S.)
- Correspondence: (I.K.Ø.H.); (T.H.); Tel.: +47-77-64-92-66 (I.K.Ø.H.); +47-77-64-60-71 (T.H.)
| | - Johan Isaksson
- Department of Chemistry, UiT The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway;
| | - Aaron G. Poth
- Institute for Molecular Bioscience, The University of Queensland, Brisbane 4072, Queensland, Australia; (A.G.P.); (D.J.C.)
| | - Kine Ø. Hansen
- Marbio, UiT The Arctic University of Norway, Breivika, N-9037, Tromsø, Norway;
| | - Aaron J. C. Andersen
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway (C.S.M.R.); (H.-M.B.); (K.S.)
| | - Céline S. M. Richard
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway (C.S.M.R.); (H.-M.B.); (K.S.)
| | - Hans-Matti Blencke
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway (C.S.M.R.); (H.-M.B.); (K.S.)
| | - Klara Stensvåg
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway (C.S.M.R.); (H.-M.B.); (K.S.)
| | - David J. Craik
- Institute for Molecular Bioscience, The University of Queensland, Brisbane 4072, Queensland, Australia; (A.G.P.); (D.J.C.)
| | - Tor Haug
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries and Economics, UiT The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway (C.S.M.R.); (H.-M.B.); (K.S.)
- Correspondence: (I.K.Ø.H.); (T.H.); Tel.: +47-77-64-92-66 (I.K.Ø.H.); +47-77-64-60-71 (T.H.)
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Moodie LWK, Sepčić K, Turk T, FrangeŽ R, Svenson J. Natural cholinesterase inhibitors from marine organisms. Nat Prod Rep 2019; 36:1053-1092. [PMID: 30924818 DOI: 10.1039/c9np00010k] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Covering: Published between 1974 up to 2018Inhibition of cholinesterases is a common approach for the management of several disease states. Most notably, cholinesterase inhibitors are used to alleviate the symptoms of neurological disorders like dementia and Alzheimer's disease and treat myasthenia gravis and glaucoma. Historically, most drugs of natural origin have been isolated from terrestrial sources and inhibitors of cholinesterases are no exception. However, the last 50 years have seen a rise in the quantity of marine natural products with close to 25 000 reported in the scientific literature. A number of marine natural products with potent cholinesterase inhibitory properties have also been reported; isolated from a variety of marine sources from algae to ascidians. Representing a diverse range of structural classes, these compounds provide inspirational leads that could aid the development of therapeutics. The current paper aims to, for the first time, comprehensively summarize the literature pertaining to cholinesterase inhibitors derived from marine sources, including the first papers published in 1974 up to 2018. The review does not report bioactive extracts, only isolated compounds, and a specific focus lies on compounds with reported dose-response data. In vivo and mechanistic data is included for compounds where this is reported. In total 185 marine cholinesterase inhibitors and selected analogs have been identified and reported and some of the compounds display inhibitory activities comparable or superior to cholinesterase inhibitors in clinical use.
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Affiliation(s)
- Lindon W K Moodie
- Department of Chemistry, University of Umeå, Umeå, SE-901 87, Sweden
| | - Kristina Sepčić
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Tom Turk
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Robert FrangeŽ
- Institute of Preclinical Sciences, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Johan Svenson
- Department of Chemistry and Materials, RISE Research Institutes of Sweden, Box 857, SE-501 15 Borås, Sweden.
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Guo S, Liu L, Zhang S, Yang C, Yue W, Zhao H, Ho CT, Du J, Zhang H, Bai N. Chemical characterization of the main bioactive polyphenols from the roots ofMorus australis(mulberry). Food Funct 2019; 10:6915-6926. [DOI: 10.1039/c9fo01457h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Polyphenols from mulberry roots possess antitumor activity and α-glucosidase, acetylcholinesterase and tyrosinase inhibitory activities.
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Affiliation(s)
- Sen Guo
- College of Food Science and Technology
- Northwest University
- Xi'an
- China
- College of Chemical Engineering
| | - Li Liu
- National Translation Center for Molecular Medicine
- Fourth Military Medical Univeristy
- Xi'an
- China
- Key Laboratory for Space Bioscience and Biotechnology
| | - Shanshan Zhang
- College of Chemical Engineering
- Department of Pharmaceutical Engineering
- Northwest University
- Xi'an
- China
| | - Chuang Yang
- College of Chemical Engineering
- Department of Pharmaceutical Engineering
- Northwest University
- Xi'an
- China
| | - Wenping Yue
- College of Chemical Engineering
- Department of Pharmaceutical Engineering
- Northwest University
- Xi'an
- China
| | - Haoan Zhao
- College of Food Science and Technology
- Northwest University
- Xi'an
- China
| | - Chi-Tang Ho
- Department of Food Science
- Rutgers University
- New Brunswick
- USA
| | - Junfeng Du
- Shaanxi Family Forestry Bureau
- Shaanxi Jiaxian Development and Reform and Science and Technology Bureau
- Yulin
- China
| | - Hai Zhang
- National Translation Center for Molecular Medicine
- Fourth Military Medical Univeristy
- Xi'an
- China
| | - Naisheng Bai
- College of Food Science and Technology
- Northwest University
- Xi'an
- China
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Tripathi VC, Satish S, Horam S, Raj S, lal A, Arockiaraj J, Pasupuleti M, Dikshit DK. Natural products from polar organisms: Structural diversity, bioactivities and potential pharmaceutical applications. POLAR SCIENCE 2018; 18:147-166. [DOI: 10.1016/j.polar.2018.04.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2023]
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Cheng ZQ, Song JL, Zhu K, Zhang J, Jiang CS, Zhang H. Total Synthesis of Pulmonarin B and Design of Brominated Phenylacetic Acid/Tacrine Hybrids: Marine Pharmacophore Inspired Discovery of New ChE and Aβ Aggregation Inhibitors. Mar Drugs 2018; 16:md16090293. [PMID: 30134630 PMCID: PMC6164518 DOI: 10.3390/md16090293] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 08/13/2018] [Accepted: 08/18/2018] [Indexed: 02/03/2023] Open
Abstract
A marine natural product, pulmonarin B (1), and a series of related tacrine hybrid analogues were synthesized and evaluated as cholinesterase (ChE) inhibitors. The in vitro ChE assay results revealed that 1 showed moderate dual acetylcholinesterase (AChE)/ butyrylcholinesterase (BChE) inhibitory activity, while the hybrid 12j proved to be the most potent dual inhibitor among the designed derivatives, being almost as active as tacrine. Molecular modeling studies together with kinetic analysis suggested that 12j interacted with both the catalytic active site and peripheral anionic site of AChE. Compounds 1 and 12j could also inhibit self-induced and AChE-induced Aβ aggregation. In addition, the cell-based assay against the human hepatoma cell line (HepG2) revealed that 1 and 12j did not show significant hepatotoxicity compared with tacrine and donepezil. Taken together, the present study confirmed that compound 1 was a potential anti-Alzheimer's disease (AD) hit, and 12j could be highlighted as a multifunctional lead compound for anti-AD drug development.
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Affiliation(s)
- Zhi-Qiang Cheng
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China.
| | - Jia-Li Song
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China.
| | - Kongkai Zhu
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China.
| | - Juan Zhang
- School of Biological Sciences, University of Brasília, Brasília 72220-275, Brazil.
| | - Cheng-Shi Jiang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China.
| | - Hua Zhang
- School of Biological Science and Technology, University of Jinan, Jinan 250022, China.
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22
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Watters DJ. Ascidian Toxins with Potential for Drug Development. Mar Drugs 2018; 16:E162. [PMID: 29757250 PMCID: PMC5983293 DOI: 10.3390/md16050162] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 05/05/2018] [Accepted: 05/10/2018] [Indexed: 12/17/2022] Open
Abstract
Ascidians (tunicates) are invertebrate chordates, and prolific producers of a wide variety of biologically active secondary metabolites from cyclic peptides to aromatic alkaloids. Several of these compounds have properties which make them candidates for potential new drugs to treat diseases such as cancer. Many of these natural products are not produced by the ascidians themselves, rather by their associated symbionts. This review will focus mainly on the mechanism of action of important classes of cytotoxic molecules isolated from ascidians. These toxins affect DNA transcription, protein translation, drug efflux pumps, signaling pathways and the cytoskeleton. Two ascidian compounds have already found applications in the treatment of cancer and others are being investigated for their potential in cancer, neurodegenerative and other diseases.
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Affiliation(s)
- Dianne J Watters
- School of Environment and Science, Griffith University, Brisbane, Queensland 4111, Australia.
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23
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Chen L, Qian PY. Review on Molecular Mechanisms of Antifouling Compounds: An Update since 2012. Mar Drugs 2017; 15:md15090264. [PMID: 28846624 PMCID: PMC5618403 DOI: 10.3390/md15090264] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/23/2017] [Accepted: 07/26/2017] [Indexed: 11/25/2022] Open
Abstract
Better understanding of the mechanisms of antifouling compounds is recognized to be of high value in establishing sensitive biomarkers, allowing the targeted optimization of antifouling compounds and guaranteeing environmental safety. Despite vigorous efforts to find new antifouling compounds, information about the mechanisms of antifouling is still scarce. This review summarizes the progress into understanding the molecular mechanisms underlying antifouling activity since 2012. Non-toxic mechanisms aimed at specific targets, including inhibitors of transmembrane transport, quorum sensing inhibitors, neurotransmission blockers, adhesive production/release inhibitors and enzyme/protein inhibitors, are put forward for natural antifouling products or shelf-stable chemicals. Several molecular targets show good potential for use as biomarkers in future mechanistic screening, such as acetylcholine esterase for neurotransmission, phenoloxidase/tyrosinase for the formation of adhesive plaques, N-acyl homoserine lactone for quorum sensing and intracellular Ca2+ levels as second messenger. The studies on overall responses to challenges by antifoulants can be categorized as general targets, including protein expression/metabolic activity regulators, oxidative stress inducers, neurotransmission blockers, surface modifiers, biofilm inhibitors, adhesive production/release inhibitors and toxic killing. Given the current situation and the knowledge gaps regarding the development of alternative antifoulants, a basic workflow is proposed that covers the indispensable steps, including preliminary mechanism- or bioassay-guided screening, evaluation of environmental risks, field antifouling performance, clarification of antifouling mechanisms and the establishment of sensitive biomarkers, which are combined to construct a positive feedback loop.
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Affiliation(s)
- Lianguo Chen
- Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
- State Key Laboratory in Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Pei-Yuan Qian
- Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
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Michael P, Hansen KØ, Isaksson J, Andersen JH, Hansen E. A Novel Brominated Alkaloid Securidine A, Isolated from the Marine Bryozoan Securiflustra securifrons. Molecules 2017; 22:molecules22071236. [PMID: 28737700 PMCID: PMC6152195 DOI: 10.3390/molecules22071236] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 07/12/2017] [Accepted: 07/17/2017] [Indexed: 02/02/2023] Open
Abstract
A novel brominated alkaloid, Securidine A, was isolated from the cold water marine bryozoan Securiflustra securifrons. Securidine A was isolated using semi-preparative HPLC, and the structure was elucidated by spectroscopic methods. The isolated Securidine A was tested for cytotoxic, antibacterial, and anti-diabetic activities as well as for its potential for inhibition of biofilm formation. No significant biological activity was observed in the applied bioassays, thus expanded bioactivity profiling is required, in order to reveal any potential applications for Securidine A.
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Affiliation(s)
- Priyanka Michael
- MARBIO, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
| | - Kine Ø Hansen
- MARBIO, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
| | - Johan Isaksson
- Department of Chemistry, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
| | - Jeanette H Andersen
- MARBIO, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
| | - Espen Hansen
- MARBIO, UiT-The Arctic University of Norway, Breivika, Tromsø N-9037, Norway.
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25
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Secondary Metabolites from Polar Organisms. Mar Drugs 2017; 15:md15030028. [PMID: 28241505 PMCID: PMC5367009 DOI: 10.3390/md15030028] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 01/24/2017] [Accepted: 01/29/2017] [Indexed: 01/11/2023] Open
Abstract
Polar organisms have been found to develop unique defences against the extreme environment environment, leading to the biosynthesis of novel molecules with diverse bioactivities. This review covers the 219 novel natural products described since 2001, from the Arctic and the Antarctic microoganisms, lichen, moss and marine faunas. The structures of the new compounds and details of the source organism, along with any relevant biological activities are presented. Where reported, synthetic and biosynthetic studies on the polar metabolites have also been included.
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26
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Palanisamy SK, Rajendran NM, Marino A. Natural Products Diversity of Marine Ascidians (Tunicates; Ascidiacea) and Successful Drugs in Clinical Development. NATURAL PRODUCTS AND BIOPROSPECTING 2017; 7:1-111. [PMID: 28097641 PMCID: PMC5315671 DOI: 10.1007/s13659-016-0115-5] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Accepted: 12/14/2016] [Indexed: 06/06/2023]
Abstract
This present study reviewed the chemical diversity of marine ascidians and their pharmacological applications, challenges and recent developments in marine drug discovery reported during 1994-2014, highlighting the structural activity of compounds produced by these specimens. Till date only 5% of living ascidian species were studied from <3000 species, this study represented from family didemnidae (32%), polyclinidae (22%), styelidae and polycitoridae (11-12%) exhibiting the highest number of promising MNPs. Close to 580 compound structures are here discussed in terms of their occurrence, structural type and reported biological activity. Anti-cancer drugs are the main area of interest in the screening of MNPs from ascidians (64%), followed by anti-malarial (6%) and remaining others. FDA approved ascidian compounds mechanism of action along with other compounds status of clinical trials (phase 1 to phase 3) are discussed here in. This review highlights recent developments in the area of natural products chemistry and biotechnological approaches are emphasized.
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Affiliation(s)
- Satheesh Kumar Palanisamy
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, 98166, Messina, Italy.
| | - N M Rajendran
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Angela Marino
- Department of Chemical, Biological, Pharmaceutical and Environmental Science, University of Messina, 98166, Messina, Italy
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Abstract
This is an update report on marine natural products isolated from cold-water organisms in the last decade, following the previous review that covered the literature up to 2005. Emphasis is on structural assignments and biological activity.
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Affiliation(s)
- Sylvia Soldatou
- School of Chemistry
- National University of Ireland
- Galway
- Ireland
- Department of Chemistry
| | - Bill J. Baker
- School of Chemistry
- National University of Ireland
- Galway
- Ireland
- Department of Chemistry
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28
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Olsen EK, Hansen E, W K Moodie L, Isaksson J, Sepčić K, Cergolj M, Svenson J, Andersen JH. Marine AChE inhibitors isolated from Geodia barretti: natural compounds and their synthetic analogs. Org Biomol Chem 2016; 14:1629-40. [PMID: 26695619 DOI: 10.1039/c5ob02416a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Barettin, 8,9-dihydrobarettin, bromoconicamin and a novel brominated marine indole were isolated from the boreal sponge Geodia barretti collected off the Norwegian coast. The compounds were evaluated as inhibitors of electric eel acetylcholinesterase. Barettin and 8,9-dihydrobarettin displayed significant inhibition of the enzyme, with inhibition constants (Ki) of 29 and 19 μM respectively towards acetylcholinesterase via a reversible noncompetitive mechanism. These activities are comparable to those of several other natural acetylcholinesterase inhibitors of marine origin. Bromoconicamin was less potent against acetylcholinesterase, and the novel compound was inactive. Based on the inhibitory activity, a library of 22 simplified synthetic analogs was designed and prepared to probe the role of the brominated indole, common to all the isolated compounds. From the structure-activity investigation it was shown that the brominated indole motif is not sufficient to generate a high acetylcholinesterase inhibitory activity, even when combined with natural cationic ligands for the acetylcholinesterase active site. The four natural compounds were also analysed for their butyrylcholinesterase inhibitory activity in addition and shown to display comparable activities. The study illustrates how both barettin and 8,9-dihydrobarettin display additional bioactivities which may help to explain their biological role in the producing organism. The findings also provide new insights into the structure-activity relationship of both natural and synthetic acetylcholinesterase inhibitors.
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Affiliation(s)
- Elisabeth K Olsen
- MabCent-SFI, UiT The Arctic University of Norway, Breivika, N-9037, Tromsø, Norway
| | - Espen Hansen
- Marbio, UiT The Arctic University of Norway, Breivika, N-9037, Tromsø, Norway.
| | - Lindon W K Moodie
- Department of Chemistry, University of Umeå, SE-901 87, Umeå, Sweden
| | - Johan Isaksson
- Department of Chemistry, UiT The Arctic University of Norway, Breivika, N-9037 Tromsø, Norway
| | - Kristina Sepčić
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Marija Cergolj
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia and Department of Biotechnology, University of Rijeka, 51000 Rijeka, Croatia
| | - Johan Svenson
- Department of Chemistry, Materials and Surfaces SP Technical Research Institute of Sweden, Box 857, SE-501 15 Borås, Sweden.
| | - Jeanette H Andersen
- Marbio, UiT The Arctic University of Norway, Breivika, N-9037, Tromsø, Norway.
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Abstract
This review covers the literature published in 2014 for marine natural products (MNPs), with 1116 citations (753 for the period January to December 2014) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1378 in 456 papers for 2014), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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30
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Moodie LWK, Žužek MC, Frangež R, Andersen JH, Hansen E, Olsen EK, Cergolj M, Sepčić K, Hansen KØ, Svenson J. Synthetic analogs of stryphnusin isolated from the marine sponge Stryphnus fortis inhibit acetylcholinesterase with no effect on muscle function or neuromuscular transmission. Org Biomol Chem 2016; 14:11220-11229. [DOI: 10.1039/c6ob02120d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The current study describes the AChE inhibitory effect of natural marine neuroactive compounds.
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Affiliation(s)
| | - Monika C. Žužek
- Institute of Preclinical Sciences
- Veterinary faculty
- University of Ljubljana
- Ljubljana
- Slovenia
| | - Robert Frangež
- Institute of Preclinical Sciences
- Veterinary faculty
- University of Ljubljana
- Ljubljana
- Slovenia
| | | | - Espen Hansen
- Marbio
- UiT The Arctic University of Norway
- Tromsø
- Norway
| | | | - Marija Cergolj
- Department of Biology
- Biotechnical Faculty
- University of Ljubljana
- Ljubljana
- Slovenia
| | - Kristina Sepčić
- Department of Biology
- Biotechnical Faculty
- University of Ljubljana
- Ljubljana
- Slovenia
| | | | - Johan Svenson
- Department of Chemistry
- UiT The Arctic University of Norway
- Tromsø
- Norway
- Department of Chemistry
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Shan Y, Gao H, Shao X, Wang J, Pan X, Zhang J. Discovery of novel VEGFR-2 inhibitors. Part 5: Exploration of diverse hinge-binding fragments via core-refining approach. Eur J Med Chem 2015; 103:80-90. [PMID: 26342134 DOI: 10.1016/j.ejmech.2015.08.045] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 08/19/2015] [Accepted: 08/23/2015] [Indexed: 10/23/2022]
Abstract
Pathological angiogenesis plays a critical role in numerous diseases including malignancy. VEGFR-2 is the central regulators in angiogenesis and has become a promising target for anticancer drug design. We have identified a novel biphenyl-aryl urea incorporated with salicyladoxime (BPS-7) as potent VEGFR-2 inhibitor. As a continuation to our previous research, various aromatic-heterocyclic were introduced as hinge-binding fragment via a core-refining approach. Interestingly, many compounds exhibited comparable VEGFR-2 inhibition to Sorafenib. In particular, 12e and 12o displayed excellent VEGFR-2 inhibitory activity with IC₅₀ values of 0.50 nM and 0.79 nM, respectively. Several title compounds showed considerable antiproliferative activity against A549 and SMMC-7721 cells. In addition, molecular docking was performed to rationalize the efficiency of the better compounds. These results will be instructive for further inhibitor design and optimization.
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Affiliation(s)
- Yuanyuan Shan
- Department of Pharmacy, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, 710061, PR China
| | - Hongping Gao
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi Province, 710061, PR China
| | - Xiaowei Shao
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi Province, 710061, PR China
| | - Jinfeng Wang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi Province, 710061, PR China
| | - Xiaoyan Pan
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi Province, 710061, PR China
| | - Jie Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, No. 76, Yanta West Road, Xi'an, Shaanxi Province, 710061, PR China.
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32
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Gribble GW. Biological Activity of Recently Discovered Halogenated Marine Natural Products. Mar Drugs 2015; 13:4044-136. [PMID: 26133553 PMCID: PMC4515607 DOI: 10.3390/md13074044] [Citation(s) in RCA: 176] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 06/15/2015] [Accepted: 06/17/2015] [Indexed: 01/08/2023] Open
Abstract
This review presents the biological activity-antibacterial, antifungal, anti-parasitic, antiviral, antitumor, antiinflammatory, antioxidant, and enzymatic activity-of halogenated marine natural products discovered in the past five years. Newly discovered examples that do not report biological activity are not included.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH 03755, USA.
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33
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Trepos R, Cervin G, Hellio C, Pavia H, Stensen W, Stensvåg K, Svendsen JS, Haug T, Svenson J. Antifouling compounds from the sub-arctic ascidian Synoicum pulmonaria: synoxazolidinones A and C, pulmonarins A and B, and synthetic analogues. JOURNAL OF NATURAL PRODUCTS 2014; 77:2105-2113. [PMID: 25181423 DOI: 10.1021/np5005032] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The current study describes the antifouling properties of four members belonging to the recently discovered synoxazolidinone and pulmonarin families, isolated from the sub-Arctic sessile ascidian Synoicum pulmonaria collected off the Norwegian coast. Four simplified synthetic analogues were also prepared and included in the study. Several of the studied compounds displayed MIC values in the micro-nanomolar range against 16 relevant marine species involved in both the micro- and macrofouling process. Settlement studies on Balanus improvisus cyprids indicated a deterrent effect and a low toxicity for selected compounds. The two synoxazolidinones displayed broad activity and are shown to be among the most active natural antifouling bromotyrosine derivatives described. Synoxazolidinone C displayed selected antifouling properties comparable to the commercial antifouling product Sea-Nine-211. The pulmonarins prevented the growth of several bacterial strains at nanomolar concentrations but displayed a lower activity toward microalgae and no effect on barnacles. The linear and cyclic synthetic peptidic mimics also displayed potent antifouling activities mainly directed against bacterial adhesion and growth.
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Affiliation(s)
- Rozenn Trepos
- School of Biological Sciences, University of Portsmouth , Portsmouth PO1 2DY, U.K
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