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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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Morgan RN, Ali AA, Alshahrani MY, Aboshanab KM. New Insights on Biological Activities, Chemical Compositions, and Classifications of Marine Actinomycetes Antifouling Agents. Microorganisms 2023; 11:2444. [PMID: 37894102 PMCID: PMC10609280 DOI: 10.3390/microorganisms11102444] [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: 08/21/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023] Open
Abstract
Biofouling is the assemblage of undesirable biological materials and macro-organisms (barnacles, mussels, etc.) on submerged surfaces, which has unfavorable impacts on the economy and maritime environments. Recently, research efforts have focused on isolating natural, eco-friendly antifouling agents to counteract the toxicities of synthetic antifouling agents. Marine actinomycetes produce a multitude of active metabolites, some of which acquire antifouling properties. These antifouling compounds have chemical structures that fall under the terpenoids, polyketides, furanones, and alkaloids chemical groups. These compounds demonstrate eminent antimicrobial vigor associated with antiquorum sensing and antibiofilm potentialities against both Gram-positive and -negative bacteria. They have also constrained larval settlements and the acetylcholinesterase enzyme, suggesting a strong anti-macrofouling activity. Despite their promising in vitro and in vivo biological activities, scaled-up production of natural antifouling agents retrieved from marine actinomycetes remains inapplicable and challenging. This might be attributed to their relatively low yield, the unreliability of in vitro tests, and the need for optimization before scaled-up manufacturing. This review will focus on some of the most recent marine actinomycete-derived antifouling agents, featuring their biological activities and chemical varieties after providing a quick overview of the disadvantages of fouling and commercially available synthetic antifouling agents. It will also offer different prospects of optimizations and analysis to scale up their industrial manufacturing for potential usage as antifouling coatings and antimicrobial and therapeutic agents.
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Affiliation(s)
- Radwa N. Morgan
- National Centre for Radiation Research and Technology (NCRRT), Drug Radiation Research Department, Egyptian Atomic Energy Authority (EAEA), Ahmed El-Zomor St, Cairo 11787, Egypt;
| | - Amer Al Ali
- Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil, Bisha 67714, Saudi Arabia;
| | - Mohammad Y. Alshahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha 9088, Saudi Arabia;
| | - Khaled M. Aboshanab
- Microbiology and Immunology Department, Faculty of Pharmacy, Ain Shams University, African Union Organization Street, Abbassia, Cairo 11566, Egypt
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3
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Zhao W, Wu Z, Liu Y, Dai P, Hai G, Liu F, Shang Y, Cao Z, Yang W. Research Progress of Natural Products and Their Derivatives in Marine Antifouling. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6190. [PMID: 37763467 PMCID: PMC10533101 DOI: 10.3390/ma16186190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 09/07/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023]
Abstract
With the increasing awareness of environmental protection, it is necessary to develop natural product extracts as antifouling (AF) agents for alternatives to toxic biocides or metal-based AF paints to control biofouling. This paper briefly summarizes the latest developments in the natural product extracts and their derivatives or analogues from marine microorganisms to terrestrial plants as AF agents in the last five years. Moreover, this paper discusses the structures-activity relationship of these AF compounds and expands their AF mechanisms. Inspired by the molecular structure of natural products, some derivatives or analogues of natural product extracts and some novel strategies for improving the AF activity of protective coatings have been proposed as guidance for the development of a new generation of environmentally friendly AF agents.
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Affiliation(s)
- Wenwen Zhao
- Xi’an Key Laboratory of High Performance Oil and Gas Field Materials, College of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China
| | - Zhiqiang Wu
- Xi’an Key Laboratory of High Performance Oil and Gas Field Materials, College of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China
| | - Yanming Liu
- Xi’an Key Laboratory of High Performance Oil and Gas Field Materials, College of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China
| | - Pan Dai
- Xi’an Key Laboratory of High Performance Oil and Gas Field Materials, College of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China
| | - Guojuan Hai
- Xi’an Key Laboratory of High Performance Oil and Gas Field Materials, College of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China
| | - Feng Liu
- Xi’an Key Laboratory of High Performance Oil and Gas Field Materials, College of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China
| | - Yu Shang
- Xi’an Key Laboratory of High Performance Oil and Gas Field Materials, College of Materials Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China
| | - Zhongyue Cao
- Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Wufang Yang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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Davis RA, Cervin G, Beattie KD, Rali T, Fauchon M, Hellio C, Bodin Åkerlund L, Pavia H, Svenson J. Evaluation of natural resveratrol multimers as marine antifoulants. BIOFOULING 2023; 39:775-784. [PMID: 37822262 DOI: 10.1080/08927014.2023.2263374] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 09/18/2023] [Indexed: 10/13/2023]
Abstract
In the current study we investigate the antifouling potential of three polyphenolic resveratrol multimers (-)-hopeaphenol, vaticanol B and vatalbinoside A, isolated from two species of Anisoptera found in the Papua New Guinean rainforest. The compounds were evaluated against the growth and settlement of eight marine microfoulers and against the settlement and metamorphosis of Amphibalanus improvisus barnacle cyprids. The two isomeric compounds (-)-hopeaphenol and vaticanol B displayed a high inhibitory potential against the cyprid larvae metamorphosis at 2.8 and 1.1 μM. (-)-Hopeaphenol was also shown to be a strong inhibitor of both microalgal and bacterial adhesion at submicromolar concentrations with low toxicity. Resveratrol displayed a lower antifouling activity compared to the multimers and had higher off target toxicity against MCR-5 fibroblasts. This study illustrates the potential of natural products as a valuable source for the discovery of novel antifouling leads with low toxicity.
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Affiliation(s)
- Rohan A Davis
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD, Australia
| | - Gunnar Cervin
- Department of Marine Sciences - Tjärnö, University of Gothenburg, Strömstad, Sweden
| | - Karren D Beattie
- Griffith Institute for Drug Discovery, School of Environment and Science, Griffith University, Brisbane, QLD, Australia
| | - Topul Rali
- School of Natural and Physical Sciences, The University of Papua New Guinea, Port Moresby, Papua New Guinea
| | - Marilyne Fauchon
- Laboratoire des Sciences de l'Environnement MARin (LEMAR), CNRS, IRD, IFREMER, University of Brest, Brest, France
| | - Claire Hellio
- Laboratoire des Sciences de l'Environnement MARin (LEMAR), CNRS, IRD, IFREMER, University of Brest, Brest, France
| | - Lovisa Bodin Åkerlund
- Department of Biological Function, RISE Research Institutes of Sweden, Borås, Sweden
| | - Henrik Pavia
- Department of Marine Sciences - Tjärnö, University of Gothenburg, Strömstad, Sweden
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Jiang P, Fu X, Niu H, Chen S, Liu F, Luo Y, Zhang D, Lei H. Recent advances on Pestalotiopsis genus: chemistry, biological activities, structure-activity relationship, and biosynthesis. Arch Pharm Res 2023:10.1007/s12272-023-01453-2. [PMID: 37389739 DOI: 10.1007/s12272-023-01453-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 06/21/2023] [Indexed: 07/01/2023]
Abstract
Strains of the fungal genus Pestalotiopsis are reported as large promising sources of structurally varied biologically active metabolites. Many bioactive secondary metabolites with diverse structural features have been derived from Pestalotiopsis. Moreover, some of these compounds can potentially be developed into lead compounds. Herein, we have systematically reviewed the chemical constituents and bioactivities of the fungal genus Pestalotiopsis, covering a period ranging from January 2016 to December 2022. As many as 307 compounds, including terpenoids, coumarins, lactones, polyketides, and alkaloids, were isolated during this period. Furthermore, for the benefit of readers, the biosynthesis and potential medicinal value of these new compounds are also discussed in this review. Finally, the perspectives and directions for future research and the potential applications of the new compounds are summarized in various tables.
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Affiliation(s)
- Peng Jiang
- Key Laboratory of Tropical Marine Bioresources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, China
| | - Xiujuan Fu
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Hong Niu
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Siwei Chen
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Feifei Liu
- School of Life Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, China
| | - Yu Luo
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Dan Zhang
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China.
| | - Hui Lei
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China.
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6
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Tanikawa A, Fujihara T, Nakajima N, Maeda Y, Nogata Y, Yoshimura E, Okada Y, Chiba K, Kitano Y. Anti-Barnacle Activities of Isothiocyanates Derived from β-Citronellol and Their Structure-Activity Relationships. Chem Biodivers 2023; 20:e202200953. [PMID: 36567259 DOI: 10.1002/cbdv.202200953] [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: 10/05/2022] [Revised: 12/19/2022] [Accepted: 12/23/2022] [Indexed: 12/27/2022]
Abstract
Antifouling agents with low toxicity are in high demand for sustaining marine industries and the environment. This study aimed to synthesize 15 isothiocyanates derived from β-citronellol and evaluate their antifouling activities and toxicities against cypris larvae of the barnacle Amphibalanus amphitrite. The synthesized isothiocyanates exhibited effective antifouling activities (EC50 =0.10-3.33 μg mL-1 ) with high therapeutic ratios (LC50 /EC50 >30). Four isothiocyanates with an amide or isocyano group showed great potential as effective antifouling agents (EC50 =0.10-0.32 μg mL-1 , LC50 /EC50 =104-833). The enantiomers of the isothiocyanates only slightly differed in their antifouling activities. These results may serve as a basis for further research and development of β-citronellol-derived isothiocyanates as effective low-toxic antifouling agents. To the best of our knowledge, this study is the first to report the antifouling activities of isothiocyanates derived from accessible natural products.
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Affiliation(s)
- Aina Tanikawa
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Takaya Fujihara
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Natsumi Nakajima
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Yuka Maeda
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Yasuyuki Nogata
- Sustainable System Research Laboratory, Central Research Institute of Electric Power Industry, 1646 Abiko, Abiko-shi, Chiba, 270-1194, Japan
| | | | - Yohei Okada
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Kazuhiro Chiba
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
| | - Yoshikazu Kitano
- Laboratory of Bio-organic Chemistry, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai-cho, Fuchu-shi, Tokyo, 183-8509, Japan
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7
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Takamura H, Kinoshita Y, Yorisue T, Kadota I. Chemical synthesis and antifouling activity of monoterpene-furan hybrid molecules. Org Biomol Chem 2023; 21:632-638. [PMID: 36562351 DOI: 10.1039/d2ob02203f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Geraniol, a monoterpene, and furan are structural motifs that exhibit antifouling activity. In this study, monoterpene-furan hybrid molecules with potentially enhanced antifouling activity were designed and synthesized. The nine synthetic hybrids showed antifouling activity against the cypris larvae of the barnacle Balanus (Amphibalanus) amphitrite with EC50 values of 1.65-4.70 μg mL-1. This activity is higher than that of geraniol and the reference furan compound. This hybridization approach to increase antifouling activity is useful and can also be extended to other active structural units.
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Affiliation(s)
- Hiroyoshi Takamura
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
| | - Yuya Kinoshita
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
| | - Takefumi Yorisue
- Institute of Natural and Environmental Sciences, University of Hyogo, 6 Yayoigaoka, Sanda 669-1546, Japan.,Division of Nature and Environmental Management, Museum of Nature and Human Activities, 6 Yayoigaoka, Sanda 669-1546, Japan
| | - Isao Kadota
- Department of Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan.
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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: 3] [Impact Index Per Article: 3.0] [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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Blasiak R, Jouffray JB, Amon DJ, Moberg F, Claudet J, Søgaard Jørgensen P, Pranindita A, Wabnitz CCC, Österblom H. A forgotten element of the blue economy: marine biomimetics and inspiration from the deep sea. PNAS NEXUS 2022; 1:pgac196. [PMID: 36714844 PMCID: PMC9802412 DOI: 10.1093/pnasnexus/pgac196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The morphology, physiology, and behavior of marine organisms have been a valuable source of inspiration for solving conceptual and design problems. Here, we introduce this rich and rapidly expanding field of marine biomimetics, and identify it as a poorly articulated and often overlooked element of the ocean economy associated with substantial monetary benefits. We showcase innovations across seven broad categories of marine biomimetic design (adhesion, antifouling, armor, buoyancy, movement, sensory, stealth), and use this framing as context for a closer consideration of the increasingly frequent focus on deep-sea life as an inspiration for biomimetic design. We contend that marine biomimetics is not only a "forgotten" sector of the ocean economy, but has the potential to drive appreciation of nonmonetary values, conservation, and stewardship, making it well-aligned with notions of a sustainable blue economy. We note, however, that the highest ambitions for a blue economy are that it not only drives sustainability, but also greater equity and inclusivity, and conclude by articulating challenges and considerations for bringing marine biomimetics onto this trajectory.
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Affiliation(s)
- Robert Blasiak
- To whom correspondence should be addressed: Robert Blasiak, Stockholm Resilience Centre, Stockholm University, 106 91, Stockholm, Sweden.
| | | | - Diva J Amon
- SpeSeas, D'Abadie, Trinidad and Tobago,Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
| | - Fredrik Moberg
- Stockholm Resilience Centre, Stockholm University, 106 91 Stockholm, Sweden
| | - Joachim Claudet
- National Center for Scientific Research, PSL Université Paris, CRIOBE, CNRS-EPHE-UPVD, Maison de l'Océan, 195 rue Saint-Jacques, 75005 Paris, France
| | - Peter Søgaard Jørgensen
- Stockholm Resilience Centre, Stockholm University, 106 91 Stockholm, Sweden,The Global Economic Dynamics and the Biosphere Academy Program, Royal Swedish Academy of Science, 104 05 Stockholm, Sweden
| | - Agnes Pranindita
- Stockholm Resilience Centre, Stockholm University, 106 91 Stockholm, Sweden
| | - Colette C C Wabnitz
- Stanford Center for Ocean Solutions, Stanford University, 473 Via Ortega, Stanford, CA 94305, USA,Institute for the Oceans and Fisheries, The University of British Columbia, 2202 Main Mall, Vancouver, BC V6T1Z4, Canada
| | - Henrik Österblom
- Stockholm Resilience Centre, Stockholm University, 106 91 Stockholm, Sweden,Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan,South American Institute for Resilience and Sustainability Studies, CP 20200 Maldonado, Uruguay
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Preparation and Properties of Fluorosilicone Fouling-Release Coatings. Polymers (Basel) 2022; 14:polym14183804. [PMID: 36145949 PMCID: PMC9505747 DOI: 10.3390/polym14183804] [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: 07/27/2022] [Revised: 09/02/2022] [Accepted: 09/08/2022] [Indexed: 11/17/2022] Open
Abstract
To improve the antifouling performance of silicone fouling-release coatings, some fluorosilicone and silicone fouling-release coatings were prepared and cured at room temperature with hydroxyl-terminated fluoropolysiloxane (FPS) or hydroxy-terminated polydimethylsiloxane (PDMS) as a film-forming resin, tetraethyl orthosilicate (TEOS) as a crosslinking agent, and dibutyltin dilaurate (DBTDL) as a catalyst. The chemical structure, surface morphology and roughness, tensile properties, and antifouling properties of the coating were studied by infrared spectroscopy, a laser confocal scanning microscope, contact angle measurement, tensile tests, and marine bacteria and benthic diatom attachment tests. The results showed that the FPS coatings were not only hydrophobic but also oleophobic, and the contact angles of the FPS coatings were larger than those of the PDMS coatings. The surface free energies of the FPS coatings were much lower than those of the PDMS coatings. Generally, the fluorine groups can improve the antifouling performance of the coating. Introducing nonreactive silicone oil into PDMS or FPS coatings can improve the antifouling performance of the coating to a certain extent. The prepared fluorosilicone fouling-release coatings showed good application prospects.
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11
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Gallic acid derivatives as inhibitors of mussel (Mytilus galloprovincialis) larval settlement: Lead optimization, biological evaluation and use in antifouling coatings. Bioorg Chem 2022; 126:105911. [DOI: 10.1016/j.bioorg.2022.105911] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/13/2022] [Accepted: 05/23/2022] [Indexed: 11/24/2022]
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Antifouling Performance of Carbon-Based Coatings for Marine Applications: A Systematic Review. Antibiotics (Basel) 2022; 11:antibiotics11081102. [PMID: 36009971 PMCID: PMC9404944 DOI: 10.3390/antibiotics11081102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 01/01/2023] Open
Abstract
Although carbon materials are widely used in surface engineering, particularly graphene (GP) and carbon nanotubes (CNTs), the application of these nanocomposites for the development of antibiofilm marine surfaces is still poorly documented. The aim of this study was, thus, to gather and discuss the relevant literature concerning the antifouling performance of carbon-based coatings against marine micro- and macrofoulers. For this purpose, a PRISMA-oriented systematic review was conducted based on predefined criteria, which resulted in the selection of thirty studies for a qualitative synthesis. In addition, the retrieved publications were subjected to a quality assessment process based on an adapted Methodological Index for Non-Randomized Studies (MINORS) scale. In general, this review demonstrated the promising antifouling performance of these carbon nanomaterials in marine environments. Further, results from the revised studies suggested that functionalized GP- and CNTs-based marine coatings exhibited improved antifouling performance compared to these materials in pristine forms. Thanks to their high self-cleaning and enhanced antimicrobial properties, as well as durability, these functionalized composites showed outstanding results in protecting submerged surfaces from the settlement of fouling organisms in marine settings. Overall, these findings can pave the way for the development of new carbon-engineered surfaces capable of preventing marine biofouling.
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Materials Selection for Antifouling Systems in Marine Structures. Molecules 2022; 27:molecules27113408. [PMID: 35684344 PMCID: PMC9182286 DOI: 10.3390/molecules27113408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/20/2022] [Accepted: 05/22/2022] [Indexed: 11/16/2022] Open
Abstract
Fouling is the accumulation of unwanted substances, such as proteins, organisms, and inorganic molecules, on marine infrastructure such as pylons, boats, or pipes due to exposure to their environment. As fouling accumulates, it can have many adverse effects, including increasing drag, reducing the maximum speed of a ship and increasing fuel consumption, weakening supports on oil rigs and reducing the functionality of many sensors. In this review, the history and recent progress of techniques and strategies that are employed to inhibit fouling are highlighted, including traditional biocide antifouling systems, biomimicry, micro-texture and natural components systems, superhydrophobic, hydrophilic or amphiphilic systems, hybrid systems and active cleaning systems. This review highlights important considerations, such as accounting for the effects that antifouling strategies have on the sensing mechanism employed by the sensors. Additionally, due to the specialised requirements of many sensors, often a bespoke and tailored solution is preferential to general coatings or paints. A description of how both fouling and antifouling techniques affect maritime sensors, specifically acoustic sensors, is given.
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14
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Grant TM, Rennison D, Cervin G, Pavia H, Hellio C, Foulon V, Brimble MA, Cahill P, Svenson J. Towards eco-friendly marine antifouling biocides - Nature inspired tetrasubstituted 2,5-diketopiperazines. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 812:152487. [PMID: 34953845 DOI: 10.1016/j.scitotenv.2021.152487] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Marine biofouling plagues all maritime industries at vast economic and environmental cost. Previous and most current methods to control biofouling have employed highly persistent toxins and heavy metals, including tin, copper, and zinc. These toxic methods are resulting in unacceptable environmental harm and are coming under immense regulatory pressure. Eco-friendly alternatives are urgently required to effectively mitigate the negative consequence of biofouling without causing collateral harm. Amphiphilic micropeptides have recently been shown to exhibit excellent broad-spectrum antifouling activity, with a non-toxic mode of action and innate biodegradability. The present work focused on incorporating the pharmacophore derived from amphiphilic micropeptides into a 2,5-diketopiperazine (DKP) scaffold. This privileged structure is present in a vast number of natural products, including marine natural product antifoulants, and provides advantages of synthetic accessibility and adaptability. A novel route to symmetrical tetrasubstituted DKPs was developed and a library of amphiphilic 2,5-DKPs were subsequently synthesised. These biodegradable compounds were demonstrated to be potent marine antifoulants displaying broad-spectrum activity in the low micromolar range against a range of common marine fouling organisms. The outcome of planned coating and field trials will dictate the future development of the lead compounds.
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Affiliation(s)
- Thomas M Grant
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - David Rennison
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Gunnar Cervin
- Department of Marine Sciences, Tjärnö Marine Laboratory, University of Gothenburg, SE-452 96 Strömstad, Sweden
| | - Henrik Pavia
- Department of Marine Sciences, Tjärnö Marine Laboratory, 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
| | - Valentin Foulon
- 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, New Zealand
| | - Patrick Cahill
- Cawthron Institute, 98 Halifax Street, Nelson, New Zealand
| | - Johan Svenson
- Cawthron Institute, 98 Halifax Street, Nelson, New Zealand.
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15
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Effective Synthesis and Antifouling Activity of Dolastatin 16 Derivatives. Mar Drugs 2022; 20:md20020124. [PMID: 35200652 PMCID: PMC8876244 DOI: 10.3390/md20020124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/01/2022] [Accepted: 02/01/2022] [Indexed: 11/17/2022] Open
Abstract
Some derivatives of dolastatin 16, a depsipeptide natural product first obtained from the sea hare Dolabella auricularia, were synthesized through second-generation synthesis of two unusual amino acids, dolaphenvaline and dolamethylleuine. The second-generation synthesis enabled derivatizations such as functionalization of the aromatic ring in dolaphenvaline. The derivatives of fragments and whole structures were evaluated for antifouling activity against the cypris larvae of Amphibalanus amphitrite. Small fragments inhibited the settlement of the cypris larvae at potent to moderate concentrations (EC50 = 0.60-4.62 μg/mL), although dolastatin 16 with a substituent on the aromatic ring (24) was much less potent than dolastatin 16.
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16
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Wang KL, Dou ZR, Gong GF, Li HF, Jiang B, Xu Y. Anti-Larval and Anti-Algal Natural Products from Marine Microorganisms as Sources of Anti-Biofilm Agents. Mar Drugs 2022; 20:md20020090. [PMID: 35200620 PMCID: PMC8876061 DOI: 10.3390/md20020090] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/13/2022] [Accepted: 01/14/2022] [Indexed: 12/19/2022] Open
Abstract
Bacteria growing inside biofilms are more resistant to hostile environments, conventional antibiotics, and mechanical stresses than their planktonic counterparts. It is estimated that more than 80% of microbial infections in human patients are biofilm-based, and biofouling induced by the biofilms of some bacteria causes serious ecological and economic problems throughout the world. Therefore, exploring highly effective anti-biofilm compounds has become an urgent demand for the medical and marine industries. Marine microorganisms, a well-documented and prolific source of natural products, provide an array of structurally distinct secondary metabolites with diverse biological activities. However, up to date, only a handful of anti-biofilm natural products derived from marine microorganisms have been reported. Meanwhile, it is worth noting that some promising antifouling (AF) compounds from marine microbes, particularly those that inhibit settlement of fouling invertebrate larvae and algal spores, can be considered as potential anti-biofilm agents owing to the well-known knowledge of the correlations between biofilm formation and the biofouling process of fouling organisms. In this review, a total of 112 anti-biofilm, anti-larval, and anti-algal natural products from marine microbes and 26 of their synthetic analogues are highlighted from 2000 to 2021. These compounds are introduced based on their microbial origins, and then categorized into the following different structural groups: fatty acids, butenolides, terpenoids, steroids, phenols, phenyl ethers, polyketides, alkaloids, flavonoids, amines, nucleosides, and peptides. The preliminary structure-activity relationships (SAR) of some important compounds are also briefly discussed. Finally, current challenges and future research perspectives are proposed based on opinions from many previous reviews.
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Affiliation(s)
- Kai-Ling Wang
- Yunnan Key Laboratory of Screening and Research on Anti-Pathogenic Plant Resources from West Yunnan (Cultivation), Institute of Materia Medica, College of Pharmacy, Dali University, Dali 671000, China; (K.-L.W.); (Z.-R.D.); (G.-F.G.); (H.-F.L.); (B.J.)
- Shenzhen Key Laboratory of Marine Bioresource & Eco-Environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Zheng-Rong Dou
- Yunnan Key Laboratory of Screening and Research on Anti-Pathogenic Plant Resources from West Yunnan (Cultivation), Institute of Materia Medica, College of Pharmacy, Dali University, Dali 671000, China; (K.-L.W.); (Z.-R.D.); (G.-F.G.); (H.-F.L.); (B.J.)
| | - Gao-Fen Gong
- Yunnan Key Laboratory of Screening and Research on Anti-Pathogenic Plant Resources from West Yunnan (Cultivation), Institute of Materia Medica, College of Pharmacy, Dali University, Dali 671000, China; (K.-L.W.); (Z.-R.D.); (G.-F.G.); (H.-F.L.); (B.J.)
| | - Hai-Feng Li
- Yunnan Key Laboratory of Screening and Research on Anti-Pathogenic Plant Resources from West Yunnan (Cultivation), Institute of Materia Medica, College of Pharmacy, Dali University, Dali 671000, China; (K.-L.W.); (Z.-R.D.); (G.-F.G.); (H.-F.L.); (B.J.)
| | - Bei Jiang
- Yunnan Key Laboratory of Screening and Research on Anti-Pathogenic Plant Resources from West Yunnan (Cultivation), Institute of Materia Medica, College of Pharmacy, Dali University, Dali 671000, China; (K.-L.W.); (Z.-R.D.); (G.-F.G.); (H.-F.L.); (B.J.)
| | - Ying Xu
- Shenzhen Key Laboratory of Marine Bioresource & Eco-Environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
- Correspondence: ; Tel.: +86-7552-695-8849
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17
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Prousis KC, Kikionis S, Ioannou E, Morgana S, Faimali M, Piazza V, Calogeropoulou T, Roussis V. Synthesis and Antifouling Activity Evaluation of Analogs of Bromosphaerol, a Brominated Diterpene Isolated from the Red Alga Sphaerococcus coronopifolius. Mar Drugs 2021; 20:md20010007. [PMID: 35049862 PMCID: PMC8781426 DOI: 10.3390/md20010007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/09/2021] [Accepted: 12/14/2021] [Indexed: 11/21/2022] Open
Abstract
Marine biofouling is an epibiotic biological process that affects almost any kind of submerged surface, causing globally significant economic problems mainly for the shipping industry and aquaculture companies, and its prevention so far has been associated with adverse environmental effects for non-target organisms. Previously, we have identified bromosphaerol (1), a brominated diterpene isolated from the red alga Sphaerococcus coronopifolius, as a promising agent with significant antifouling activity, exerting strong anti-settlement activity against larvae of Amphibalanus (Balanus) amphitrite and very low toxicity. The significant antifouling activity and low toxicity of bromosphaerol (1) motivated us to explore its chemistry, aiming to optimize its antifouling potential through the preparation of a number of analogs. Following different synthetic routes, we successfully synthesized 15 structural analogs (2–16) of bromosphaerol (1), decorated with different functional groups. The anti-settlement activity (EC50) and the degree of toxicity (LC50) of the bromosphaerol derivatives were evaluated using cyprids and nauplii of the cirriped crustacean A. amphitrite as a model organism. Derivatives 2, 4, and 6–16 showed diverse levels of antifouling activity. Among them, compounds 9 and 13 can be considered as well-performing antifoulants, exerting their activity through a non-toxic mechanism.
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Affiliation(s)
- Kyriakos C. Prousis
- Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11653 Athens, Greece;
| | - Stefanos Kikionis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (S.K.); (E.I.)
| | - Efstathia Ioannou
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (S.K.); (E.I.)
| | - Silvia Morgana
- Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), National Research Council (CNR), Via De Marini 6, 16149 Genova, Italy; (S.M.); (M.F.)
| | - Marco Faimali
- Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), National Research Council (CNR), Via De Marini 6, 16149 Genova, Italy; (S.M.); (M.F.)
| | - Veronica Piazza
- Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), National Research Council (CNR), Via De Marini 6, 16149 Genova, Italy; (S.M.); (M.F.)
- Correspondence: (V.P.); (T.C.); (V.R.); Tel.: +39-010-6475409 (V.P.); +30-210-7273833 (T.C.); +30-210-7274592 (V.R.)
| | - Theodora Calogeropoulou
- Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11653 Athens, Greece;
- Correspondence: (V.P.); (T.C.); (V.R.); Tel.: +39-010-6475409 (V.P.); +30-210-7273833 (T.C.); +30-210-7274592 (V.R.)
| | - Vassilios Roussis
- Section of Pharmacognosy and Chemistry of Natural Products, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou, 15771 Athens, Greece; (S.K.); (E.I.)
- Correspondence: (V.P.); (T.C.); (V.R.); Tel.: +39-010-6475409 (V.P.); +30-210-7273833 (T.C.); +30-210-7274592 (V.R.)
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18
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From Natural Xanthones to Synthetic C-1 Aminated 3,4-Dioxygenated Xanthones as Optimized Antifouling Agents. Mar Drugs 2021; 19:md19110638. [PMID: 34822509 PMCID: PMC8618441 DOI: 10.3390/md19110638] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/09/2021] [Accepted: 11/11/2021] [Indexed: 01/20/2023] Open
Abstract
Biofouling, which occurs when certain marine species attach and accumulate in artificial submerged structures, represents a serious economic and environmental issue worldwide. The discovery of new non-toxic and eco-friendly antifouling systems to control or prevent biofouling is, therefore, a practical and urgent need. In this work, the antifouling activity of a series of 24 xanthones, with chemical similarities to natural products, was exploited. Nine (1, 2, 4, 6, 8, 16, 19, 21, and 23) of the tested xanthones presented highly significant anti-settlement responses at 50 μM against the settlement of mussel Mytilus galloprovincialis larvae and low toxicity to this macrofouling species. Xanthones 21 and 23 emerged as the most effective larval settlement inhibitors (EC50 = 7.28 and 3.57 µM, respectively). Additionally, xanthone 23 exhibited a therapeutic ratio (LC50/EC50) > 15, as required by the US Navy program attesting its suitability as natural antifouling agents. From the nine tested xanthones, none of the compounds were found to significantly inhibit the growth of the marine biofilm-forming bacterial strains tested. Xanthones 4, 6, 8, 16, 19, 21, and 23 were found to be non-toxic to the marine non-target species Artemia salina (<10% mortality at 50 μM). Insights on the antifouling mode of action of the hit xanthones 21 and 23 suggest that these two compounds affected similar molecular targets and cellular processes in mussel larvae, including that related to mussel adhesion capacity. This work exposes for the first time the relevance of C-1 aminated xanthones with a 3,4-dioxygenated pattern of substitution as new non-toxic products to prevent marine biofouling.
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19
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Ni C, Chen G, Li X, Zhao H, Yu L. Synthesis and application of indole esters derivatives containing acrylamide group as antifouling agents. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Chiang HY, Cheng J, Liu X, Ma C, Qian PY. Synthetic Analogue of Butenolide as an Antifouling Agent. Mar Drugs 2021; 19:481. [PMID: 34564143 PMCID: PMC8465062 DOI: 10.3390/md19090481] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/11/2021] [Accepted: 08/21/2021] [Indexed: 11/27/2022] Open
Abstract
Butenolide derivatives have the potential to be effective and environmentally friendly antifouling agents. In the present study, a butenolide derivative was structurally modified into Boc-butenolide to increase its melting point and remove its foul smell. The structurally modified Boc-butenolide demonstrated similar antifouling capabilities to butenolide in larval settlement bioassays but with significantly lower toxicity at high concentrations. Release-rate measurements demonstrated that the antifouling compound Boc-butenolide could be released from polycaprolactone-polyurethane (PCL-PU)-based coatings to inhibit the attachment of foulers. The coating matrix was easily degraded in the marine environment. The performance of the Boc-butenolide antifouling coatings was further examined through a marine field test. The coverage of biofouler on the Boc-butenolide coatings was low after 2 months, indicating the antifouling potential of Boc-butenolide.
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Affiliation(s)
- Ho Yin Chiang
- Department of Ocean Science, Division of Life Science and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Hong Kong, China; (H.Y.C.); (J.C.); (X.L.)
| | - Jinping Cheng
- Department of Ocean Science, Division of Life Science and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Hong Kong, China; (H.Y.C.); (J.C.); (X.L.)
| | - Xuan Liu
- Department of Ocean Science, Division of Life Science and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Hong Kong, China; (H.Y.C.); (J.C.); (X.L.)
| | - Chunfeng Ma
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510000, China;
| | - Pei-Yuan Qian
- Department of Ocean Science, Division of Life Science and Hong Kong Branch of the Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), The Hong Kong University of Science and Technology, Hong Kong, China; (H.Y.C.); (J.C.); (X.L.)
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Nansha 510000, China
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21
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Coutinho MCL, Teixeira VL, Santos CSG. Palatability and Physical and Chemical Defenses in Five Annelid Polychaetes from Tropical Brazilian Beaches. THE BIOLOGICAL BULLETIN 2021; 240:157-168. [PMID: 34129443 DOI: 10.1086/714505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
AbstractAlthough researchers have examined numerous marine organisms' compensatory characteristics to minimize predation pressure, few have investigated the defensive mechanisms of polychaetes, despite their diversity. Thus, our study's aim was to evaluate the palatability and defensive strategies, both chemical and structural, in the polychaetes Branchiomma luctuosum, Perinereis anderssoni, Phragmatopoma caudata, Eurythoe complanata, and Timarete sp. Another twofold aim was to determine, by comparing our results with the literature, any latitudinal difference in the defensive strategies of E. complanata and to assess defensive mechanisms and palatability in relation to individuals' mobility, overtness, body regionalization, and color. Specimens were collected at Boa Viagem and Itaipu Beaches in Niterói, Rio de Janeiro, Brazil. In assays, a generalist consumer, the hermit crab Calcinus tibicen, was used to evaluate palatability and defenses. In palatability assays of live tissue of the polychaetes, consumers were offered a fresh piece of each polychaete to gauge their acceptance or rejection; in artificial food assays to test extracts of the polychaetes, artificial bait containing extracts of the polychaetes was offered to crabs to identify any chemical defense. Although the extracts of B. luctuosum, E. complanata, P. caudata (i.e., opercular crown), and Timarete sp. were not palatable to the consumers, extracts of P. anderssoni and P. caudata (i.e., body) were. Moreover, the opercular crown of P. caudata and the branchial crown of B. luctuosum showed evidence of structural and chemical defenses. The results corroborate past findings, suggesting no latitudinal variation in the defensive strategies of E. complanata. In general, less motile and more exposed species, aposematic or dark in color, exhibited greater investment in defensive strategies and unpalatability.
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22
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Sánchez-Aguinagalde O, Meaurio E, Lejardi A, Sarasua JR. Amorphous solid dispersions in poly(ε-caprolactone)/xanthohumol bioactive blends: physicochemical and mechanical characterization. J Mater Chem B 2021; 9:4219-4229. [PMID: 33998613 DOI: 10.1039/d0tb02964e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This paper reports the obtention of amorphous solid dispersions (ASDs) of xanthohumol (XH) in PCL containing up to 50 wt% of the bioactive compound in the amorphous form thanks to the advantageous specific interactions established in this system. The miscibility of the PCL/XH blends was investigated using DSC. Melting point depression analysis yielded a negative interaction parameter indicating the occurrence of favorable inter-association interactions. XRD analyses performed at room temperature agree with the crystallinity results obtained on the heating runs performed by DSC. FTIR spectroscopy reveals strong C[double bond, length as m-dash]OO-H specific interactions between the hydroxyl groups of XH and the carbonyl groups of PCL. The AFM analysis of the blends obtained by spin-coating shows the variation of crystalline morphology with composition. Finally, tensile tests reveal high toughness retention for the blends in which XH can be dispersed in the amorphous form (containing up to 50 wt% XH). In summary, PCL is a convenient matrix to disperse XH in the amorphous form, bringing the possibility of obtaining completely amorphous bioactive materials suitable for the development of non-stiff biomedical devices.
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Affiliation(s)
- Oroitz Sánchez-Aguinagalde
- Department of Mining-Metallurgy Engineering and Materials Science, POLYMAT, University of The Basque Country (UPV/EHU), School of Engineering I, Plaza Ingeniero Torres Quevedo 1, Bilbao, Spain.
| | - Emilio Meaurio
- Department of Mining-Metallurgy Engineering and Materials Science, POLYMAT, University of The Basque Country (UPV/EHU), School of Engineering I, Plaza Ingeniero Torres Quevedo 1, Bilbao, Spain.
| | - Ainhoa Lejardi
- Department of Mining-Metallurgy Engineering and Materials Science, POLYMAT, University of The Basque Country (UPV/EHU), School of Engineering I, Plaza Ingeniero Torres Quevedo 1, Bilbao, Spain.
| | - Jose-Ramon Sarasua
- Department of Mining-Metallurgy Engineering and Materials Science, POLYMAT, University of The Basque Country (UPV/EHU), School of Engineering I, Plaza Ingeniero Torres Quevedo 1, Bilbao, Spain.
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23
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Su X, Yang M, Hao D, Guo X, Jiang L. Marine antifouling coatings with surface topographies triggered by phase segregation. J Colloid Interface Sci 2021; 598:104-112. [PMID: 33895532 DOI: 10.1016/j.jcis.2021.04.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 11/17/2022]
Abstract
Marine biofouling is a ubiquitous and longstanding challenge that causes both economic and environmental problems. To address this, several antifouling strategies have been proposed, such as the release of biocidal compounds or surface chemical/physical design. Here we report a coating with surface structures (chemical heterogeneity) triggered by phase segregation, which endues the good antifouling properties, alongside robust mechanical properties, low underwater oil adhesion, and excellent optical transparency. This is achieved by arranging the hydrophobic and hydrophilic components to control the assembly and phase separation under the cross-linking and localized swelling process. The structure designs are based on the poly(ethylene glycols) (PEG), zwitterions, and hydrophobic components, which may lower the entropic and enthalpic driving forces for the adsorption of the marine organisms. Our approach could provide an effective way of manufacturing novel coating with amphiphilic micro/nanodomains structure, particularly for the marine industry. And we also showed that the coatings were stable under different temperatures and shear environments. To illustrate the applicability of such a robust coating in marine biofouling, we demonstrated significantly reduced algal adhesion and barnacle attachment in the sea (p < 0.01). We envision that this work will provide great potential for the application in antifouling marine coatings.
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Affiliation(s)
- Xin Su
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Ming Yang
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Dezhao Hao
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xinglin Guo
- Key Laboratory of Science and Technology on High-tech Polymer Materials, Chinese Academy of Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Lei Jiang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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24
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Zanuy D, Nir S, Aleman C, Reches M. Structural preferences of an anti-fouling peptide: From single chain to small molecular assemblies. Biophys Chem 2021; 272:106555. [PMID: 33713998 DOI: 10.1016/j.bpc.2021.106555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 01/16/2021] [Accepted: 01/31/2021] [Indexed: 11/15/2022]
Abstract
The structural features of a tripeptide constituted by two different non-coded amino acids, 3,4-dihydroxy-L-phenylalanine (L-DOPA) and 4-fluoro-Phenylalanine, (Phe(4F)), have been investigated by means of classical mechanics simulations. This tripeptide had been characterised as an antifouling agent with great adhesion capabilities. In this work, its conformational preferences have been described in two different environments (gas phase and water solution), at three different pHs and with different degrees of terminal capping. At the same time, the structural dynamics of small aggregates of the tripeptide have been investigated and their ability to stabilise β-sheet based assemblies has been studied. The reported results describe the complexity of the tripeptide conformational preferences due to both the amphiphilic nature of its side chains, and the effect of the ionisation state resulting from the solution conditions. The investigations performed with small tripeptide assemblies in water solution reproduced the previously reported structural features, such as the polymorphism of its aggregates as a function of the pH. At edge pH values, the electrostatic screening imposed by the ions present in the solution facilitates the aggregation of the tripeptide chains, while at neutral pH and low concentrations of ionised species, the polar groups and the hydrogen bond capable groups impose their strength and lead to the disaggregation of the peptide clusters by favouring the solvation of individual chains rather than stabilising the aggregated states.
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Affiliation(s)
- David Zanuy
- Department of Chemical Engineering, EEBE, Universitat Politècnica de Catalunya, C/ Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain.
| | - Sivan Nir
- Institute of Chemistry and The Centre for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Carlos Aleman
- Department of Chemical Engineering, EEBE, Universitat Politècnica de Catalunya, C/ Eduard Maristany, 10-14, Ed. I2, 08019 Barcelona, Spain; Barcelona Research Centre for Multiscale Science and Engineering, Universitat Politècnica de Catalunya, C/ Eduard Maristany, 10-14, Ed. C, 08019 Barcelona, Spain
| | - Meital Reches
- Institute of Chemistry and The Centre for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel.
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25
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Tian L, Yin Y, Bing W, Jin E. Antifouling Technology Trends in Marine Environmental Protection. JOURNAL OF BIONIC ENGINEERING 2021; 18:239-263. [PMID: 33815489 PMCID: PMC7997792 DOI: 10.1007/s42235-021-0017-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Marine fouling is a worldwide problem, which is harmful to the global marine ecological environment and economic benefits. The traditional antifouling strategy usually uses toxic antifouling agents, which gradually exposes a serious environmental problem. Therefore, green, long-term, broad-spectrum and eco-friendly antifouling technologies have been the main target of engineers and researchers. In recent years, many eco-friendly antifouling technologies with broad application prospects have been developed based on the low toxicity and non-toxicity antifouling agents and materials. In this review, contemporary eco-friendly antifouling technologies and materials are summarized into bionic antifouling and non-bionic antifouling strategies (2000-2020). Non-bionic antifouling technologies mainly include protein resistant polymers, antifoulant releasing coatings, foul release coatings, conductive antifouling coatings and photodynamic antifouling technology. Bionic antifouling technologies mainly include the simulated shark skin, whale skin, dolphin skin, coral tentacles, lotus leaves and other biology structures. Brief future research directions and challenges are also discussed in the end, and we expect that this review would boost the development of marine antifouling technologies.
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Affiliation(s)
- Limei Tian
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130022 China
- Weihai Institute for Bionics-Jilin University, Weihai, 264207 China
| | - Yue Yin
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130022 China
| | - Wei Bing
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130022 China
- School of Chemistry and Life Science, Changchun University of Technology, Changchun, 130012 China
| | - E. Jin
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130022 China
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Murosaki T, Momose A, Nogata Y, Onodera S, Azuma O, Hirai Y. Antifouling Activity of Hydroxyl Functional Groups in PVA Thin Films Against the Settlement of Sessile Organisms in Laboratory and Field Conditions. J PHOTOPOLYM SCI TEC 2020. [DOI: 10.2494/photopolymer.33.591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Ai Momose
- Graduate School of Photonics Science, Chitose Institute of Science and Technology
| | - Yasuyuki Nogata
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry
| | | | - Otohiko Azuma
- The Center of Chemical Business Creatives for Hokkaido
| | - Yuji Hirai
- Department of Applied Chemistry and Bioscience, Faculty of Science and Engineering, Chitose Institute of Science and Technology
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27
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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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28
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Liu LL, Wu CH, Qian PY. Marine natural products as antifouling molecules - a mini-review (2014-2020). BIOFOULING 2020; 36:1210-1226. [PMID: 33401982 DOI: 10.1080/08927014.2020.1864343] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
In the present review, 182 antifouling (AF) natural products from marine microorganisms, algae and marine invertebrates reported from August 2014 to May 2020 are presented. Amongst these compounds, over half were isolated from marine-derived microorganisms, including 70 compounds from fungi and 31 compounds from bacteria. The structure-relationship of some of these compounds is also briefly discussed. Based on the work reported, a general workflow was drafted to refine the procedures for the commercialization of any novel AF compounds. Finally, butenolide, which is considered a potential environmentally friendly antifoulant, is used as a case study to show the procedures involved in AF compound work from the aspect of discovery, structure optimization, toxicity, stability, AF mechanism and coating incorporation, which highlight the current challenges and future perspectives in AF compound research.
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Affiliation(s)
- Ling-Li Liu
- Department of Ocean Science and Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong University of Science and Technology, Hong Kong, China
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Chuan-Hai Wu
- Department of Ocean Science and Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong University of Science and Technology, Hong Kong, China
| | - Pei-Yuan Qian
- Department of Ocean Science and Hong Kong Branch of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Hong Kong University of Science and Technology, Hong Kong, China
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Abstract
The advantages and emergent interest in organism-derived bioactive molecules have recently renewed scientific research attention in this field. Since 1967, about 52 different derivatives of phthalate ester (PE) have been reported from different taxonomic groups. Anthropogenic derivatives of the PEs are confined to petroleum products, as a plasticizer. These derivatives exhibit a potential toxicity on the living system, particularly those having a reduced molecular weight. An organism-derived PE differs chemically from that of synthetic ones in terms of the abundance of 14C and its bond structure, leading to its varied activities in the biological system. The study of the biosynthetic pathway and the optimization of parameters for product enhancement have advocated their organism-derived nature. Various bioactivities of such organisms-derived derivatives of phthalates such as antibacterial, antifungal, an inducer of apoptosis and cell cycle arrest, antioxidant, cytotoxic, antitumor, allopathic, larvicidal, antifouling, chemotactic, antimelanogenic, antiviral, and anti-inflammatory activities have been well documented. This is the first review that focuses on the positive bioactivities of such organism-derived PEs in detail. There is enormous scope for research in this field to search for the utilization of such organism-derived phthalate derivatives will have potential bioactivity, their possible use to improve their efficacy.
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Affiliation(s)
- Raj Narayan Roy
- Microbiology Research Laboratory, Department of Botany, Dr. Bhupendra Nath Dutta Smriti Mahavidyalaya, Purba-Bardhaman, India
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30
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Haider W, Ma J, Hou XM, Wei MY, Zheng JY, Shao CL. Natural Flavones and their Preliminary Structure–Antifouling Activity Relationship. Chem Nat Compd 2020. [DOI: 10.1007/s10600-020-03023-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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31
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Xu Y, Zhang L, Wang KL, Zhang Y, Wong YH. Transcriptomic analysis of the mode of action of the candidate anti-fouling compound di(1H-indol-3-yl)methane (DIM) on a marine biofouling species, the bryozoan Bugula neritina. MARINE POLLUTION BULLETIN 2020; 152:110904. [PMID: 32479283 DOI: 10.1016/j.marpolbul.2020.110904] [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: 07/29/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 06/11/2023]
Abstract
Di(1H-indol-3-yl)methane (DIM) was previously suggested to be an environmentally friendly antifouling compound, but it was also reported that the compound was highly stable in natural seawater. The present study reported that 3 h DIM treatments at 4 μg mL-1 or higher concentration and 12 h DIM treatments at 2 μg mL-1 or higher concentration induced significant larval mortality and metamorphic abnormality in the bryozoan Bugula neritina. The bioassay results correlated with the dose-dependent up-regulation of HSP family proteins, pro-apoptotic proteins, ubiquitination protein, and the dose-dependent down-regulation of anti-apoptotic genes and developmental genes. Unexpectedly, genes involved in fatty acid biosynthesis and protein synthesis were up-regulated in response to DIM treatment, but, in general, the effects of DIM on B. neritina larvae were comparable to that reported in human cancer cell lines. DIM also induced changes in steroid hormone biosynthesis genes in B. neritina larvae, leading to the concern that DIM might have long-term effects on marine lives. Overall, the present study suggested that application of DIM to the bryozoan larvae would trigger a major transcriptomic response, which might be linked to the observed larval mortality and abnormality. We suggest that application of DIM as an antifouling ingredient should be proceeded with great cautions.
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Affiliation(s)
- Ying Xu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, PR China
| | - Lu Zhang
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, PR China
| | - Kai-Ling Wang
- Institute of Materia Medica, School of Pharmacy and Chemistry, Dali University, Dali 671000, PR China
| | - Yu Zhang
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060, PR China
| | - Yue Him Wong
- Institute for Advanced Study, Shenzhen University, Shenzhen 518060, PR China.
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32
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Neves AR, Almeida JR, Carvalhal F, Câmara A, Pereira S, Antunes J, Vasconcelos V, Pinto M, Silva ER, Sousa E, Correia-da-Silva M. Overcoming environmental problems of biocides: Synthetic bile acid derivatives as a sustainable alternative. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 187:109812. [PMID: 31669574 DOI: 10.1016/j.ecoenv.2019.109812] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 10/10/2019] [Accepted: 10/12/2019] [Indexed: 06/10/2023]
Abstract
Marine biofouling represents a global economic and ecological challenge. Some marine organisms produce bioactive metabolites, such as steroids, that inhibit the settlement and growth of fouling organisms. The aim of this work was to explore bile acids as a new scaffold with antifouling (AF) activity by using chemical synthesis to produce a series of bile acid derivatives with optimized AF performance and understand their structure-activity relationships. Seven bile acid derivatives were successfully synthesized in moderate to high yields, and their structures were elucidated through spectroscopic methods. Their AF activities were tested against both macro- and microfouling communities. The most potent bile acid against the settlement of Mytilus galloprovincialis larvae was the methyl ester derivative of cholic acid (10), which showed an EC50 of 3.7 μM and an LC50/EC50 > 50 (LC50 > 200 μM) in AF effectiveness vs toxicity studies. Two derivatives of deoxycholic acid (5 and 7) potently inhibited the growth of biofilm-forming marine bacteria with EC50 values < 10 μM, and five bile acids (1, 5, and 7-9) potently inhibited the growth of diatoms, showing EC50 values between 3 and 10 μM. Promising AF profiles were achieved with some of the synthesized bile acids by combining antimacrofouling and antimicrofouling activities. Initial studies on the incorporation of one of these promising bile acid derivatives in polymeric coatings, such as a marine paint, demonstrated the ability of these compounds to generate coatings with antimacrofouling activity.
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Affiliation(s)
- Ana R Neves
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General, Norton de Matos S/N, 4450-208, Matosinhos, Portugal; Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Joana R Almeida
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General, Norton de Matos S/N, 4450-208, Matosinhos, Portugal
| | - Francisca Carvalhal
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General, Norton de Matos S/N, 4450-208, Matosinhos, Portugal; Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Amadeu Câmara
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Sandra Pereira
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General, Norton de Matos S/N, 4450-208, Matosinhos, Portugal
| | - Jorge Antunes
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General, Norton de Matos S/N, 4450-208, Matosinhos, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4069-007, Porto, Portugal
| | - Vitor Vasconcelos
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General, Norton de Matos S/N, 4450-208, Matosinhos, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, 4069-007, Porto, Portugal
| | - Madalena Pinto
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General, Norton de Matos S/N, 4450-208, Matosinhos, Portugal; Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Elisabete R Silva
- BioISI - Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Campo Grande C8 bdg, Lisboa, 1749-016 Portugal; CERENA - Centro de Recursos Naturais e Ambiente, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1, 1049-001, Lisboa, Portugal
| | - Emília Sousa
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General, Norton de Matos S/N, 4450-208, Matosinhos, Portugal; Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal
| | - Marta Correia-da-Silva
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General, Norton de Matos S/N, 4450-208, Matosinhos, Portugal; Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
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33
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Amaral-Zettler LA, Zettler ER, Mincer TJ. Ecology of the plastisphere. Nat Rev Microbiol 2020; 18:139-151. [PMID: 31937947 DOI: 10.1038/s41579-019-0308-0] [Citation(s) in RCA: 484] [Impact Index Per Article: 121.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/20/2019] [Indexed: 01/08/2023]
Abstract
The plastisphere, which comprises the microbial community on plastic debris, rivals that of the built environment in spanning multiple biomes on Earth. Although human-derived debris has been entering the ocean for thousands of years, microplastics now numerically dominate marine debris and are primarily colonized by microbial and other microscopic life. The realization that this novel substrate in the marine environment can facilitate microbial dispersal and affect all aquatic ecosystems has intensified interest in the microbial ecology and evolution of this biotope. Whether a 'core' plastisphere community exists that is specific to plastic is currently a topic of intense investigation. This Review provides an overview of the microbial ecology of the plastisphere in the context of its diversity and function, as well as suggesting areas for further research.
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Affiliation(s)
- Linda A Amaral-Zettler
- NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, Den Burg, The Netherlands. .,The University of Amsterdam, Amsterdam, The Netherlands.
| | - Erik R Zettler
- NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, Den Burg, The Netherlands
| | - Tracy J Mincer
- Wilkes Honors College and Harbor Branch Oceanographic Institute, Florida Atlantic University, Boca Raton, FL, USA
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34
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Li Z, Guo Z. Bioinspired surfaces with wettability for antifouling application. NANOSCALE 2019; 11:22636-22663. [PMID: 31755511 DOI: 10.1039/c9nr05870b] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Wettability is a special character found in nature, including the superhydrophobicity of lotus leaves, the underwater superoleophobicity of fish scales and the slipperiness of pitcher plants. These surfaces exhibit unique properties such as resistance to icing, corrosion, and the like. The antifouling properties of the material surface have important applications in a variety of areas, such as in hulls, in medical equipment, in water pipes and underwater equipment. However, the traditional anti-fouling surface is usually combined with toxic substances or its manufacturing process is complicated and expensive, which cannot meet the current antifouling demand. These wettable surfaces have always exhibited good anti-biofouling and self-cleaning properties, and their use as antifouling surfaces can well solve the problems of the above-mentioned traditional antifouling surfaces. Here, we divided the wettable surfaces into superhydrophobic surfaces, underwater superoleophobic surfaces and slippery surfaces, respectively, summarizing their development in the field of antifouling. Their research progress in antibacterial, antibiotic flocculation and antiplatelet adhesion is highlighted. Furthermore, we provide our own insights into the shortcomings and development prospects of wettable surface applications in the field of antifouling.
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Affiliation(s)
- Zhihao Li
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China. and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Zhiguang Guo
- Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei University, Wuhan 430062, People's Republic of China. and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
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35
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Abstract
Seventy-one marine organisms representing different classes of marine fauna and flora were collected from the Red Sea. They include sponges, hydrozoan, soft corals, sea cucumber, ascidian, cyanobacteria, and macroalgae. The methanolic extracts were evaluated for their toxicity and settlement inhibition effects by using cultured Balanus amphitrite. Thirty-three extracts displayed antifouling effects: four samples were highly potent at 1 μg/mL with a percentage of settlement inhibition above 31%, twenty-two were potent at 10 μg/mL with a percentage of settlement inhibition between 16 and 30%, and seven were active at 10 μg/mL with a percentage of settlement inhibition between 0 and 15%. Two promising extracts were purified by employing several chromatographic techniques, leading to the isolation of 12 known compounds. The isolated compounds were evaluated for their antifouling activities and demonstrated potent antifouling effects with EC50 values of less than 10 μg/mL.
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36
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Feng K, Ni C, Yu L, Zhou W, Li X. Synthesis and antifouling evaluation of indole derivatives. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 182:109423. [PMID: 31325810 DOI: 10.1016/j.ecoenv.2019.109423] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 07/02/2019] [Accepted: 07/05/2019] [Indexed: 06/10/2023]
Abstract
Indole derivatives derived from the secondary metabolites of marine organisms possess the excellent antifouling property to inhibit the biofouling. These compounds and their analogues are simple in structure and have been proven to have low toxicity and bioaccumulation. Therefore, the active indole antifoulants are expected to replace the potentially toxic antifoulants which are widely used in current antifouling coatings. Seven indole derivatives were synthesized via the Friedel-Crafts alkylation reaction and were characterized by IR spectra, 1H NMR, 13C NMR and elemental analysis. Inhibition experiments against marine algae and bacteria were conducted, and the partial inhibition rates of algae and bacteria were more than 90%. This outcome indicates that indole derivatives possess excellent properties suitable for use as targeting anti-fouling compound for algae and bacteria. Non-invasive Micro-test Technology (NMT) reveals that the Ca2+ efflux of Platymonas subcordiformis dramatically increased in the presence of indole derivatives, which is inferred to be the molecular mechanism for inhibiting the growth of marine algae. The antifouling coatings containing indole derivatives were prepared and subjected to an antifouling test in a marine environment, and the results show that N-(1-H-5-bromo-indole-3-ylmethyl) benzamide and N-(1-H-2-phenyl-indole-3-ylmethyl) benzamide possess better antifouling performance compared to copper pyrithione (CuPT). According to these results, indole derivatives in this study might become novel and promising antifoulants.
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Affiliation(s)
- Kang Feng
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Chunhua Ni
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Liangmin Yu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266003, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China
| | - Wenjun Zhou
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Xia Li
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266003, China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China.
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37
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Wang X, Yu L, Li F, Zhang G, Zhou W, Jiang X. Synthesis of amide derivatives containing capsaicin and their antioxidant and antibacterial activities. J Food Biochem 2019; 43:e13061. [PMID: 31612542 DOI: 10.1111/jfbc.13061] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 08/23/2019] [Accepted: 09/07/2019] [Indexed: 12/22/2022]
Abstract
The capsaicin in hot peppers is an important biological active substance that is widely used in food and medicine. In this work, six capsaicin derivatives such as N-(4-Hydroxy-3-acetophenone benzyl)acrylamide (A), 2-hydroxy-3-(octyloxy)phenyl-5-acrylamidemethylbenzene phenyl methanone (B), N-(2,5-dihydroxybenzene)acetamide (C), N-(5-acetamidemethyl benzene-2,4-dihydroxybenzene)acetamide (D), 4-acetamideme thylbenzene-2-benzylphenol (E), and N-(2-methyl-4-hydroxy-5-methylthiobenzene)acetamide (F) were synthesized via the Friedel-Crafts (F-C) alkylation reaction and were characterized using IR, 1 H NMR, and HRMS. The antioxidant activity of compounds was evaluated using the reducing power and DPPH radical (DPPH·) scavenging assays, and Vitamin C (Vc) was used as a control. The antibacterial activity was tested using minimum inhibition concentration (MIC) and antibacterial rate assays, and Escherichia coli and Staphylococcus aureus were used as the tested strain. The results showed that all six capsaicin derivatives had certain antioxidant and antibacterial activities, and the activities increased with increasing mass concentration. The best properties were obtained for compounds C and F; the antioxidant activity of compound C was similar to Vc and the MIC of compound F was 0.0313 mg/ml, its antibacterial rate was greater than 99% at 3 mg/ml. PRACTICAL APPLICATIONS: As a vegetable, peppers can be eaten fresh or processed to other forms such as pepper powder or pepper jam, and it is very popular because of its long history, unique flavor, and special functions. Our current study shows that capsaicin derivatives have good antioxidant and antibacterial activities, and therefore, the present study of capsaicin derivatives with good activity provides a good foundation for future applications in natural food additives and medicine.
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Affiliation(s)
- Xuan Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China
| | - LiangMin Yu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China.,Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
| | - FengCai Li
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China
| | - GuangLong Zhang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China
| | - WenJun Zhou
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China
| | - XiaoHui Jiang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China.,Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology, Qingdao, China
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38
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Pérez M, Pis Diez CM, Belén Valdez M, García M, Paola A, Avigliano E, Palermo JA, Blustein G. Isolation and Antimacrofouling Activity of Indole and Furoquinoline Alkaloids from ‘Guatambú’ Trees (Aspidosperma australeandBalfourodendron riedelianum). Chem Biodivers 2019; 16:e1900349. [DOI: 10.1002/cbdv.201900349] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 09/12/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Miriam Pérez
- Centro de Investigación y Desarrollo en Tecnología de Pinturas-CIDEPINT Calle 52 e/121 y 122, 1900 La Plata B1900AYB Argentina
- Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo Calle 60 y 122, 1900 La Plata B1900AYB Argentina
| | - Cristian M. Pis Diez
- Universidad de Buenos AiresDepartamento de Química Orgánica – Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria Pabellón 2 1428 Buenos Aires Argentina
- CONICET-Universidad de Buenos AiresUnidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), Ciudad Universitaria Pabellón 2 1428 Buenos Aires Argentina
| | - María Belén Valdez
- Universidad de Buenos AiresDepartamento de Química Orgánica – Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria Pabellón 2 1428 Buenos Aires Argentina
- CONICET-Universidad de Buenos AiresUnidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), Ciudad Universitaria Pabellón 2 1428 Buenos Aires Argentina
| | - Mónica García
- Centro de Investigación y Desarrollo en Tecnología de Pinturas-CIDEPINT Calle 52 e/121 y 122, 1900 La Plata B1900AYB Argentina
| | - Analía Paola
- Centro de Investigación y Desarrollo en Tecnología de Pinturas-CIDEPINT Calle 52 e/121 y 122, 1900 La Plata B1900AYB Argentina
- Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo Calle 60 y 122, 1900 La Plata B1900AYB Argentina
| | - Esteban Avigliano
- Instituto de Investigaciones en Producción Animal (INPA-CONICET-UBA), Av. Chorroarín 280Universidad de Buenos Aires, 1427 Buenos Aires C1427CWO Argentina
- Centro de Investigaciones Antonia Ramos (CIAR)Fundación Bosques Nativos Argentinos Camino Balneario s/n Villa Bonita 3125, Misiones Argentina
| | - Jorge A. Palermo
- Universidad de Buenos AiresDepartamento de Química Orgánica – Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria Pabellón 2 1428 Buenos Aires Argentina
- CONICET-Universidad de Buenos AiresUnidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), Ciudad Universitaria Pabellón 2 1428 Buenos Aires Argentina
| | - Guillermo Blustein
- Centro de Investigación y Desarrollo en Tecnología de Pinturas-CIDEPINT Calle 52 e/121 y 122, 1900 La Plata B1900AYB Argentina
- Universidad Nacional de La PlataFacultad de Ciencias Agrarias y Forestales, Calle 60 y 119, 1900 La Plata B1900AYB Argentina
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Sánchez-Lozano I, Hernández-Guerrero CJ, Muñoz-Ochoa M, Hellio C. Biomimetic Approaches for the Development of New Antifouling Solutions: Study of Incorporation of Macroalgae and Sponge Extracts for the Development of New Environmentally-Friendly Coatings. Int J Mol Sci 2019; 20:ijms20194863. [PMID: 31574976 PMCID: PMC6801554 DOI: 10.3390/ijms20194863] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 09/27/2019] [Accepted: 09/27/2019] [Indexed: 12/22/2022] Open
Abstract
Biofouling causes major economic losses in the maritime industry. In our site study, the Bay of La Paz (Gulf of California), biofouling on immersed structures is a major problem and is treated mostly with copper-based antifouling paints. Due to the known environmental effect of such treatments, the search for environmentally friendly alternatives in this zone of high biodiversity is a priority to ensure the conservation and protection of species. The aim of this work was to link chemical ecology to marine biotechnology: indeed, the natural defense of macroalgae and sponge was evaluated against biofoulers (biofilm and macrofoulers) from the same geographical zone, and some coatings formulation was done for field assays. Our approach combines in vitro and field bioassays to ensure the selection of the best AF agent prospects. The 1st step consisted of the selection of macroalgae (5 species) and sponges (2 species) with surfaces harboring a low level of colonizers; then extracts were prepared and assayed for toxicity against Artemia, activity towards key marine bacteria involved in biofilm formation in the Bay of La Paz, and the potency to inhibit adhesion of macroorganisms (phenoloxidase assays). The most active and non-toxic extracts were further studied for biofouling activity in the adhesion of the bacteria involved in biofilm formation and through incorporation in marine coatings which were immersed in La Paz Bay during 40 days. In vitro assays demonstrated that extracts of Laurencia gardneri, Sargassum horridum (macroalgae), Haliclona caerulea and Ircinia sp. (sponges) were the most promising. The field test results were of high interest as the best formulation were composed of extracts of H. caerulea and S. horridum and led to a reduction of 32% of biofouling compared with the control.
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Affiliation(s)
- Ilse Sánchez-Lozano
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. Instituto Politécnico Nacional S/N. Col. Playa Palo de Santa Rita, 23096 La Paz, Baja California Sur, Mexico.
| | - Claudia Judith Hernández-Guerrero
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. Instituto Politécnico Nacional S/N. Col. Playa Palo de Santa Rita, 23096 La Paz, Baja California Sur, Mexico.
| | - Mauricio Muñoz-Ochoa
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. Instituto Politécnico Nacional S/N. Col. Playa Palo de Santa Rita, 23096 La Paz, Baja California Sur, Mexico.
| | - Claire Hellio
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, Institut Universitaire Européen de la Mer, F-29280 Plouzané, France.
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40
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Biofilm formation in marine bacteria and biocidal sensitivity: interplay between a potent antibiofilm compound (AS162) and quorum-sensing autoinducers. 3 Biotech 2019; 9:338. [PMID: 31467830 DOI: 10.1007/s13205-019-1866-6] [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: 05/03/2019] [Accepted: 08/12/2019] [Indexed: 10/26/2022] Open
Abstract
The capacity of two homoserine lactones to stimulate the marine bacteria Pseudoalteromonas ulvae (TC14 strain) for its capacity to form a biofilm when exposed to a potent antibiofilm compound AS162 is reported. Effective concentrations (EC50) of AS162 at 24 h, 48 h, and 72 h were, respectively, of 4.3, 4.4, and 6.0 µM. When tested in combination with HSLs, results showed that quorum-sensing signal molecules 3-oxo-C6 and 3-oxo-C8 homoserine lactones do not act directly on the biofilm formation, but are able to interfere positively with AS162 to promote biofilm growth with EC50 ranging from 30 to 50 µM. The same results were obtained with two other marine bacterial strains: Pseudoalteromonas lipolytica TC8 and Paracoccus sp. 4M6. These findings suggest that HSLs can significantly affect the biocidal sensitivity of marine bacteria to antifouling agents.
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41
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Pérez M, Sánchez M, García M, Patiño C LP, Blustein G, Palermo JA. Antifouling activity of peracetylated cholic acid, a natural bile acid derivative. Steroids 2019; 149:108414. [PMID: 31152827 DOI: 10.1016/j.steroids.2019.05.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/30/2019] [Accepted: 05/15/2019] [Indexed: 10/26/2022]
Abstract
The antifouling activity of peracetylated cholic acid (1), a bile acid derivative which was isolated in a previous work as a natural product from the Patagonian sponge Siphonochalina fortis, was evaluated in laboratory and field trials. Toxicity and settlement assays were performed with the mussel Mytilus edulis platensis, while the field trials were carried out by addition of the compound to experimental soluble-matrix paints, which were then tested in the sea. The results obtained in this work show that 1 has a good antifouling activity and low toxicity, and the paints aditivated with 0,6% Wt showed promissory performances in the field trials at the sea. These results confirm the previous hypothesis that the few acetylated and lipophilic bile acid derivatives isolated from marine invertebrates may act as natural antifoulants. Compound 1 is a natural, biodegradable product that can be easily prepared from cholic acid, which in turn can be isolated in industrial scale from cattle bile. All these facts make cholic acid a good scaffold for the preparation of derivatives, which can be natural product-like, effective and sustainable antifouling additives for marine paints and other applications.
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Affiliation(s)
- Miriam Pérez
- Centro de Investigación y Desarrollo en Tecnología de Pinturas-CIDEPINT, Calle 52 e/ 121 y 122, La Plata B1900AYB, Argentina; Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo, Calle 60 y 122, 1900 La Plata, Argentina
| | - Marianela Sánchez
- Universidad de Buenos Aires, Departamento de Química Orgánica - Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellón 2, 1428 Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), Buenos Aires, Argentina
| | - Mónica García
- Centro de Investigación y Desarrollo en Tecnología de Pinturas-CIDEPINT, Calle 52 e/ 121 y 122, La Plata B1900AYB, Argentina
| | - Laura P Patiño C
- Universidad de Buenos Aires, Departamento de Química Orgánica - Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellón 2, 1428 Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), Buenos Aires, Argentina
| | - Guillermo Blustein
- Centro de Investigación y Desarrollo en Tecnología de Pinturas-CIDEPINT, Calle 52 e/ 121 y 122, La Plata B1900AYB, Argentina; Universidad Nacional de La Plata, Facultad de Ciencias Agrarias y Forestales, Calle 60 y 119, 1900 La Plata, Argentina
| | - Jorge A Palermo
- Universidad de Buenos Aires, Departamento de Química Orgánica - Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellón 2, 1428 Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), Buenos Aires, Argentina.
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Antunes J, Leão P, Vasconcelos V. Marine biofilms: diversity of communities and of chemical cues. ENVIRONMENTAL MICROBIOLOGY REPORTS 2019; 11:287-305. [PMID: 30246474 DOI: 10.1111/1758-2229.12694] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 09/14/2018] [Indexed: 06/08/2023]
Abstract
Surfaces immersed in seawater are rapidly colonized by various microorganisms, resulting in the formation of heterogenic marine biofilms. These communities are known to influence the settlement of algae spores and invertebrate larvae, triggering a succession of fouling events, with significant environmental and economic impacts. This review covers recent research regarding the differences in composition of biofilms isolated from different artificial surface types and the influence of environmental factors on their formation. One particular phenomenon - bacterial quorum sensing (QS) - allows bacteria to coordinate swarming, biofilm formation among other phenomena. Some other marine biofilm chemical cues are believed to modulate the settlement and the succession of macrofouling organisms, and they are also reviewed here. Finally, since the formation of a marine biofilm is considered to be an initial, QS-dependent step in the development of marine fouling events, QS inhibition is discussed on its potential as a tool for antibiofouling control in marine settings.
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Affiliation(s)
- Jorge Antunes
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Av. General Norton de Matos, s/n 4450-208, Matosinhos, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre 4069-007, Porto, Portugal
| | - Pedro Leão
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Av. General Norton de Matos, s/n 4450-208, Matosinhos, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre 4069-007, Porto, Portugal
| | - Vitor Vasconcelos
- CIIMAR/CIMAR - Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Av. General Norton de Matos, s/n 4450-208, Matosinhos, Portugal
- Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre 4069-007, Porto, Portugal
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Nir S, Zanuy D, Zada T, Agazani O, Aleman C, Shalev DE, Reches M. Tailoring the self-assembly of a tripeptide for the formation of antimicrobial surfaces. NANOSCALE 2019; 11:8752-8759. [PMID: 30778487 DOI: 10.1039/c8nr10043h] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The accumulation of bacteria on surfaces is currently one of the greatest concerns for the management of proper healthcare systems, water and energy. Here, we describe the mechanism by which a single peptide forms two pH-dependent supramolecular particles that resist bacterial contamination. By using NMR and molecular dynamics (MD), we determined the structures of the peptide monomers and showed the forces directing the self-assembly of each structure under different conditions. These peptide assemblies change the characteristics of bare glass and confer it with the ability to prevent biofilm formation. Furthermore, they can adsorb and release active compounds as demonstrated with an anticancer drug, antibiotic and enzyme. This synergism and the detailed understanding of the processes are necessary for developing new sterile surfaces for healthcare systems, water purification devices, food packaging or any environment that suffers from biocontamination.
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Affiliation(s)
- Sivan Nir
- Institute of Chemistry and The Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem, 91904. Israel.
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A Multi-Bioassay Integrated Approach to Assess the Antifouling Potential of the Cyanobacterial Metabolites Portoamides. Mar Drugs 2019; 17:md17020111. [PMID: 30759807 PMCID: PMC6410096 DOI: 10.3390/md17020111] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/31/2019] [Accepted: 02/08/2019] [Indexed: 02/06/2023] Open
Abstract
The cyclic peptides portoamides produced by the cyanobacterium Phormidium sp. LEGE 05292 were previously isolated and their ability to condition microcommunities by allelopathic effect was described. These interesting bioactive properties are, however, still underexplored as their biotechnological applications may be vast. This study aims to investigate the antifouling potential of portoamides, given that a challenge in the search for new environmentally friendly antifouling products is to find non-toxic natural alternatives with the ability to prevent colonization of different biofouling species, from bacteria to macroinvertebrates. A multi-bioassay approach was applied to assess portoamides antifouling properties, marine ecotoxicity and molecular mode of action. Results showed high effectiveness in the prevention of mussel larvae settlement (EC50 = 3.16 µM), and also bioactivity towards growth and biofilm disruption of marine biofouling bacterial strains, while not showing toxicity towards both target and non-target species. Antifouling molecular targets in mussel larvae include energy metabolism modifications (failure in proton-transporting ATPases activity), structural alterations of the gills and protein and gene regulatory mechanisms. Overall, portoamides reveal a broad-spectrum bioactivity towards diverse biofouling species, including a non-toxic and reversible effect towards mussel larvae, showing potential to be incorporated as an active ingredient in antifouling coatings.
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45
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Heidarian S, Mohammadipanah F, Maghsoudlou A, Dashti Y, Challis GL. Anti-microfouling Activity of Glycomyces sediminimaris UTMC 2460 on Dominant Fouling Bacteria of Iran Marine Habitats. Front Microbiol 2019; 9:3148. [PMID: 30687240 PMCID: PMC6333643 DOI: 10.3389/fmicb.2018.03148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 12/04/2018] [Indexed: 12/17/2022] Open
Abstract
Discovery of environmentally safe anti-fouling agent is currently of considerable interest, due to the continuous impact of biofoulers on the marine habitats and the adverse effects of biocides on the environment. This study reports the anti-adhesion effect of marine living Actinobacteria against fouling strains isolated from submerged panels in marine environments of Iran. The extract of Glycomyces sediminimaris UTMC 2460 affected the biofilm formation of Kocuria sp. and Mesorhizobium sp., as the dominant fouling agents in this ecosystem, up to 93.2% and 71.4%, respectively. The metabolic activity of the fouler bacteria was reduced by the extract up to 17 and 9%, respectively. This indicated the bactericidal potency of the extract on cells in the biofilm state that enables the compound to be effective even once the biofilms are established in addition to the inhibition of biofilm initiation. Moreover, extra polymeric substance (EPS) production by fouling bacteria was reduced by 60-70%. The absence of activities against fouling bacteria in suspension and also the absence of toxic effect on Artemia salina showed the harmless ecological effect of the anti-microfouling extract on the prokaryotic and eukaryotic microflora of the studied Iran marine ecosystem. Metabolic profiling of G. sediminimaris UTMC 2460 revealed the presence of compounds with molecular formulae matching those of known anti-fouling diketopiperazines as major components of the extract. These results suggest that the extract of Glycomyces sediminimaris UTMC 2460 could be used as a potentially eco-friendly viable candidate in comparison to the synthetic common commercial anti-microfouling material to prevent the fouling process in marine habitats of Iran.
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Affiliation(s)
- Sheida Heidarian
- Department of Microbiology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
| | - Fatemeh Mohammadipanah
- Department of Microbiology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
| | - Abdolvahab Maghsoudlou
- Ocean Science Research Center, Iranian National Institute for Oceanography and Atmospheric Science, Tehran, Iran
| | - Yousef Dashti
- Department of Chemistry, University of Warwick, Coventry, United Kingdom
| | - Gregory L. Challis
- Department of Chemistry, University of Warwick, Coventry, United Kingdom
- Warwick Integrative Synthetic Biology Centre, University of Warwick, Coventry, United Kingdom
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC, Australia
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46
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Andjouh S, Blache Y. Parallel synthesis of a bis-triazoles library as psammaplin A analogues: A new wave of antibiofilm compounds? Bioorg Med Chem Lett 2018; 29:614-618. [PMID: 30600205 DOI: 10.1016/j.bmcl.2018.12.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/15/2018] [Accepted: 12/21/2018] [Indexed: 01/16/2023]
Abstract
Synthesis of psammaplin A analogues is described. Screening for antibiofilm activity of the targeted library afford some interesting elements in terms of structure-activity relationships. Some compounds exhibited EC50 in the range of ampicillin against three strains of gramnegative bacteria without toxic effect.
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Affiliation(s)
| | - Yves Blache
- Université de Toulon, MAPIEM, Toulon, France.
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Batista D, Costa R, Carvalho AP, Batista WR, Rua CPJ, de Oliveira L, Leomil L, Fróes AM, Thompson FL, Coutinho R, Dobretsov S. Environmental conditions affect activity and associated microorganisms of marine sponges. MARINE ENVIRONMENTAL RESEARCH 2018; 142:59-68. [PMID: 30274716 DOI: 10.1016/j.marenvres.2018.09.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 08/09/2018] [Accepted: 09/19/2018] [Indexed: 06/08/2023]
Abstract
Changes in environmental conditions can influence sponges and their holobionts. The present study investigated the effect of upwelling and anthropogenic pollution on the bioactivity of marine sponges, microbial communities and functional genes, and composition of their chemical compounds. The species Dysidea etheria, Darwinella sp., Hymeniacidon heliophila and Tedania ignis were collected from areas with distinct influence of upwelling and low anthropogenic impact and from areas without influence of upwelling but affected by sewage and the port. In most cases, the same sponge species collected from areas with distinct environmental conditions had a different chemical composition, antifouling activity, composition and diversity of associated microorganisms. Antimicrobial, quorum sensing inhibitory and anti-larval activities of sponge extracts were more pronounced in the area without upwelling showing higher level of anthropogenic pollution. This study suggests that upwelling and anthropogenic pollution affect the chemical activity and holobiome composition of sponges.
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Affiliation(s)
- Daniela Batista
- Instituto de Estudos do Mar Almirante Paulo Moreira, Rua Kioto no 253, Praia dos Anjos, Arraial do Cabo, RJ, Brazil.
| | - Rafaela Costa
- Instituto de Estudos do Mar Almirante Paulo Moreira, Rua Kioto no 253, Praia dos Anjos, Arraial do Cabo, RJ, Brazil
| | - Ana Polycarpa Carvalho
- Instituto de Estudos do Mar Almirante Paulo Moreira, Rua Kioto no 253, Praia dos Anjos, Arraial do Cabo, RJ, Brazil
| | - William Romão Batista
- Instituto de Estudos do Mar Almirante Paulo Moreira, Rua Kioto no 253, Praia dos Anjos, Arraial do Cabo, RJ, Brazil
| | - Cintia P J Rua
- Instituto de Biologia e SAGE-COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundão s/n, Rio de Janeiro, RJ, Brazil
| | - Louisi de Oliveira
- Instituto de Biologia e SAGE-COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundão s/n, Rio de Janeiro, RJ, Brazil
| | - Luciana Leomil
- Instituto de Biologia e SAGE-COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundão s/n, Rio de Janeiro, RJ, Brazil
| | - Adriana M Fróes
- Instituto de Biologia e SAGE-COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundão s/n, Rio de Janeiro, RJ, Brazil
| | - Fabiano L Thompson
- Instituto de Biologia e SAGE-COPPE, Universidade Federal do Rio de Janeiro, Ilha do Fundão s/n, Rio de Janeiro, RJ, Brazil
| | - Ricardo Coutinho
- Instituto de Estudos do Mar Almirante Paulo Moreira, Rua Kioto no 253, Praia dos Anjos, Arraial do Cabo, RJ, Brazil
| | - Sergey Dobretsov
- Marine Science and Fisheries Department, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khoud 123. PO Box 34, Muscat, Oman; Center of Excellence in Marine Biotechnology, Sultan Qaboos University, Al-Khoud 123. PO Box 50, Muscat, Oman.
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48
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Song Y, Cai Z, Lao Y, Jin H, Ying K, Lin G, Zhou J. Antibiofilm activity substances derived from coral symbiotic bacterial extract inhibit biofouling by the model strain Pseudomonas aeruginosa PAO1. Microb Biotechnol 2018; 11:1090-1105. [PMID: 30298548 PMCID: PMC6196393 DOI: 10.1111/1751-7915.13312] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/18/2018] [Accepted: 08/23/2018] [Indexed: 01/08/2023] Open
Abstract
The mitigation of biofouling has received significant research attention, with particular focus on non-toxic and sustainable strategies. Here, we investigated quorum sensing inhibitor (QSI) bacteria as a means of controlling biofouling in a laboratory-scale system. Approximately, 200 strains were isolated from coral (Pocillopora damicornis) and screened for their ability to inhibit quorum sensing (QS). Approximately, 15% of the isolates exhibited QSI activity, and a typical coral symbiotic bacterium, H12-Vibrio alginolyticus, was selected in order for us to investigate quorum sensing inhibitory activity further. Confocal microscopy revealed that V. alginolyticus extract inhibited biofilm formation from Pseudomonas aeruginosa PAO1. In addition, the secondary metabolites of V. alginolyticus inhibited PAO1 virulence phenotypes by downregulating motility ability, elastase activity and rhamnolipid production. NMR and MS spectrometry suggested that the potential bioactive compound involved was rhodamine isothiocyanate. Quantitative real-time PCR indicated that the bacterial extract induced a significant downregulation of QS regulatory genes (lasB, lasI, lasR, rhlI, rhlR) and virulence-related genes (pqsA, pqsR). The possible mechanism underlying the action of rhodamine isothiocyanate analogue involves the disruption of the las and/or rhl system of PAO1. Our results highlight coral microbes as a bioresource pool for developing QS inhibitors and identifying novel antifouling agents.
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Affiliation(s)
- Yu Song
- Department of Earth System ScienceTsinghua University of Education Key Laboratory for Earth System ModelingBeijing100084China
- Division of Ocean Science and TechnologyGraduate School at ShenzhenTsinghua UniversityShenzhen518055China
| | - Zhong‐Hua Cai
- Division of Ocean Science and TechnologyGraduate School at ShenzhenTsinghua UniversityShenzhen518055China
| | - Yong‐Min Lao
- Division of Ocean Science and TechnologyGraduate School at ShenzhenTsinghua UniversityShenzhen518055China
| | - Hui Jin
- Division of Ocean Science and TechnologyGraduate School at ShenzhenTsinghua UniversityShenzhen518055China
| | - Ke‐Zhen Ying
- Division of Ocean Science and TechnologyGraduate School at ShenzhenTsinghua UniversityShenzhen518055China
| | - Guang‐Hui Lin
- Department of Earth System ScienceTsinghua University of Education Key Laboratory for Earth System ModelingBeijing100084China
| | - Jin Zhou
- Division of Ocean Science and TechnologyGraduate School at ShenzhenTsinghua UniversityShenzhen518055China
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Feng DQ, He J, Chen SY, Su P, Ke CH, Wang W. The Plant Alkaloid Camptothecin as a Novel Antifouling Compound for Marine Paints: Laboratory Bioassays and Field Trials. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2018; 20:623-638. [PMID: 29860659 DOI: 10.1007/s10126-018-9834-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/16/2018] [Indexed: 06/08/2023]
Abstract
The extensive use of copper and booster biocides in antifouling (AF) paints has raised environmental concerns and the need to develop new AF agents. In the present study, 18 alkaloids derived from terrestrial plants were initially evaluated for AF activity using laboratory bioassays with the bryozoan Bugula neritina and the barnacle Balanus albicostatus. The results showed that 4 of the 18 alkaloids were effective in inhibiting larval settlement of B. neritina, with an EC50 range of 6.18 to 43.11 μM, and 15 of the 18 alkaloids inhibited larval settlement of B. albicostatus, with EC50 values ranging from 1.18 to 67.58 μM. Field trials that incorporated five alkaloids respectively into paints with 20% w/w indicated an in situ AF efficiency of evodiamine, strychnine, camptothecin (CPT), and cepharanthine, with the most potent compound being CPT, which also exhibited stronger AF efficiency than the commercial antifoulants cuprous oxide and zinc pyrithione in the field over a period of 12 months. Further field trials with different CPT concentrations (0.1 to 20% w/w) in the paints suggested a concentration-dependent AF performance in the natural environment, and the effective concentrations to significantly inhibit settlement of biofoulers in the field were ≥ 0.5% w/w (the efficiency of 0.5% w/w lasted for 2 months). Moreover, CPT toxicity against the crustacean Artemia salina, the planktonic microalgae Phaeodactylum tricornutum and Isochrysis galbana, was examined. The results showed that 24 h LC50 of CPT against A. salina was 20.75 μM, and 96 h EC50 (growth inhibition) values of CPT to P. tricornutum and I. galbana were 55.81 and 6.29 μM, respectively, indicating that CPT was comparatively less toxic than several commercial antifoulants previously reported. Our results suggest the novel potential application of CPT as an antifoulant.
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Affiliation(s)
- Dan Qing Feng
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China.
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen University, Xiamen, 361102, People's Republic of China.
| | - Jian He
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Si Yu Chen
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Pei Su
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Cai Huan Ke
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, College of Ocean and Earth Sciences, Xiamen University, Xiamen, 361102, People's Republic of China
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Wei Wang
- Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen University, Xiamen, 361102, People's Republic of China
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Pinteus S, Lemos MF, Alves C, Neugebauer A, Silva J, Thomas OP, Botana LM, Gaspar H, Pedrosa R. Marine invasive macroalgae: Turning a real threat into a major opportunity - the biotechnological potential of Sargassum muticum and Asparagopsis armata. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.06.018] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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