101
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Fletcher MH, Jennings MC, Wuest WM. Draining the moat: disrupting bacterial biofilms with natural products. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.055] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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102
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Induction of Antifouling Diterpene Production byStreptomyces cinnabarinusPK209 in Co-Culture with Marine-DerivedAlteromonassp. KNS-16. Biosci Biotechnol Biochem 2014; 76:1849-54. [DOI: 10.1271/bbb.120221] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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103
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Glycoglycerolipids Isolated from Marine DerivedStreptomyces coelescensPK206-15. Biosci Biotechnol Biochem 2014; 76:1746-51. [DOI: 10.1271/bbb.120354] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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104
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Majik MS, Rodrigues C, Mascarenhas S, D'Souza L. Design and synthesis of marine natural product-based 1H-indole-2,3-dione scaffold as a new antifouling/antibacterial agent against fouling bacteria. Bioorg Chem 2014; 54:89-95. [PMID: 24875126 DOI: 10.1016/j.bioorg.2014.05.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/30/2014] [Accepted: 05/02/2014] [Indexed: 11/16/2022]
Abstract
Marine organisms such as seaweeds, sponges and corals protect their own surfaces from fouling by their high anesthetic, repellant, and settlement inhibition properties. Within the marine ecosystem, evolution has allowed for the development of certain antifouling properties. Isatin is a biologically active chemical produced by an Alteromonas sp. strain inhibiting the surface of embryos of the cardiean shrimp Palaemon macrodectylus, which protect them from the pathogenic fungus Lagenidium callinectes. In present study, an antibacterial activity of isatin and its synthetic analogues were evaluated against different fouling bacteria in order to explore the structure activity relationships for the first time. The synthesized compounds along with parent isatin were tested against different ecologically relevant marine microorganisms by using the Kirby-Bauer disc diffusion method. Few synthetically modified isatin exhibited potent inhibitory activity at concentration of 2 μg/disc against Planococcus donghaensis, Erythrobacter litoralis, Alivibrio salmonicida, Vibrio furnisii. Overall, the modified analogues showed stronger activity than the parent marine natural product (isatin) and hence 1H-indole-2,3-dione scaffold has immense potential as future antibacterial/antifouling candidate.
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Affiliation(s)
- Mahesh S Majik
- Bio-Organic Chemistry Laboratory, CSIR-National Institute of Oceanography, Dona-Paula Goa 403 004, India.
| | - Cheryl Rodrigues
- Bio-Organic Chemistry Laboratory, CSIR-National Institute of Oceanography, Dona-Paula Goa 403 004, India
| | - Stacey Mascarenhas
- Bio-Organic Chemistry Laboratory, CSIR-National Institute of Oceanography, Dona-Paula Goa 403 004, India
| | - Lisette D'Souza
- Bio-Organic Chemistry Laboratory, CSIR-National Institute of Oceanography, Dona-Paula Goa 403 004, India
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105
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Antifouling activity of synthetic alkylpyridinium polymers using the barnacle model. Mar Drugs 2014; 12:1959-76. [PMID: 24699112 PMCID: PMC4012450 DOI: 10.3390/md12041959] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 02/26/2014] [Accepted: 02/26/2014] [Indexed: 01/11/2023] Open
Abstract
Polymeric alkylpyridinium salts (poly-APS) isolated from the Mediterranean marine sponge, Haliclona (Rhizoniera) sarai, effectively inhibit barnacle larva settlement and natural marine biofilm formation through a non-toxic and reversible mechanism. Potential use of poly-APS-like compounds as antifouling agents led to the chemical synthesis of monomeric and oligomeric 3-alkylpyridinium analogues. However, these are less efficient in settlement assays and have greater toxicity than the natural polymers. Recently, a new chemical synthesis method enabled the production of poly-APS analogues with antibacterial, antifungal and anti-acetylcholinesterase activities. The present study examines the antifouling properties and toxicity of six of these synthetic poly-APS using the barnacle (Amphibalanus amphitrite) as a model (cyprids and II stage nauplii larvae) in settlement, acute and sub-acute toxicity assays. Two compounds, APS8 and APS12-3, show antifouling effects very similar to natural poly-APS, with an anti-settlement effective concentration that inhibits 50% of the cyprid population settlement (EC₅₀) after 24 h of 0.32 mg/L and 0.89 mg/L, respectively. The toxicity of APS8 is negligible, while APS12-3 is three-fold more toxic (24-h LC₅₀: nauplii, 11.60 mg/L; cyprids, 61.13 mg/L) than natural poly-APS. This toxicity of APS12-3 towards nauplii is, however, 60-fold and 1200-fold lower than that of the common co-biocides, Zn- and Cu-pyrithione, respectively. Additionally, exposure to APS12-3 for 24 and 48 h inhibits the naupliar swimming ability with respective IC₅₀ of 4.83 and 1.86 mg/L.
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106
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Umezawa T, Oguri Y, Matsuura H, Yamazaki S, Suzuki M, Yoshimura E, Furuta T, Nogata Y, Serisawa Y, Matsuyama-Serisawa K, Abe T, Matsuda F, Suzuki M, Okino T. Omaezallene from red alga Laurencia sp.: structure elucidation, total synthesis, and antifouling activity. Angew Chem Int Ed Engl 2014; 53:3909-12. [PMID: 24616156 DOI: 10.1002/anie.201311175] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Indexed: 11/10/2022]
Abstract
Natural antifouling products have been the subject of considerable attention. We screened marine algae for antifouling activity and discovered omaezallenes, the new bromoallene-containing natural products isolated from the red alga Laurencia sp. Described is the isolation, structure elucidation, and total syntheses of omaezallenes. The relative and absolute configurations of natural omaezallenes were unambiguously established through total synthesis. The antifouling activities and ecotoxicity of omaezallenes were also evaluated.
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Affiliation(s)
- Taiki Umezawa
- Graduate School of Environmental Science, Hokkaido University, Sapporo 060-0810 (Japan)
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107
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Umezawa T, Oguri Y, Matsuura H, Yamazaki S, Suzuki M, Yoshimura E, Furuta T, Nogata Y, Serisawa Y, Matsuyama-Serisawa K, Abe T, Matsuda F, Suzuki M, Okino T. Omaezallene from Red AlgaLaurenciasp.: Structure Elucidation, Total Synthesis, and Antifouling Activity. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201311175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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108
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Kong NN, Fang ST, Liu Y, Wang JH, Yang CY, Xia CH. Flavonoids from the halophyteApocynum venetumand their antifouling activities against marine biofilm-derived bacteria. Nat Prod Res 2014; 28:928-31. [DOI: 10.1080/14786419.2014.886205] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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109
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Zhang J, Liang Y, Wang KL, Liao XJ, Deng Z, Xu SH. Antifouling steroids from the South China Sea gorgonian coral Subergorgia suberosa. Steroids 2014; 79:1-6. [PMID: 24184487 DOI: 10.1016/j.steroids.2013.10.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 10/18/2013] [Accepted: 10/22/2013] [Indexed: 10/26/2022]
Abstract
Two new unusual cholestane derivatives, pentacyclic steroid 16,22-epoxy-20β,23S-dihydroxycholest-1-ene-3-one (1) and 20β,23S-dihydroxycholest-1-ene-3,22-dione (2), along with two new pregnane derivatives, 15β,17α-dihydroxypregna-4,6-diene-3,20-dione (3) and 11α-hydroxypregna-4-ene-3,6,20-trione (4), were isolated from the South China Sea gorgonian coral Subergorgia suberosa. Their structures were established based on the extensive analyses of 2D NMR, IR, and HRMS. Antifouling tests against Balanus amphitrite larvae settlement indicated that 1 and 2 exhibited inhibitory effect with EC50 values of 5.3, and 14.5 μg/mL, respectively.
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Affiliation(s)
- Jun Zhang
- College of Pharmacy, Jinan University, Guangzhou 510632, PR China
| | - Yan Liang
- Division of Life Science, School of Science, The Hong Kong University of Science and Technology, Hong Kong Special Administrative Region, PR China
| | - Kai-Ling Wang
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China
| | - Xiao-Jian Liao
- Department of Chemistry, Jinan University, Guangzhou 510632, PR China
| | - Zhou Deng
- Department of Chemistry, Jinan University, Guangzhou 510632, PR China
| | - Shi-Hai Xu
- College of Pharmacy, Jinan University, Guangzhou 510632, PR China; Department of Chemistry, Jinan University, Guangzhou 510632, PR China.
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110
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Wang B, Wang L, Li Y, Liu Y. Heterocyclic terpenes: linear furano- and pyrroloterpenoids. RSC Adv 2014. [DOI: 10.1039/c3ra48040b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review of furano- and pyrroloterpenoids covers the literature, 180 articles in all, published from January 2006 to December 2013.
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Affiliation(s)
- Bin Wang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou, China
- Shenzhen Shajing Affiliated Hospital of Guangzhou Medical University
| | - Lishu Wang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou, China
- Jilin Provincial Academy of Chinese Medicine Sciences
| | - Yinglei Li
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou, China
- Jilin Provincial Academy of Chinese Medicine Sciences
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou, China
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111
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Garg N, Manchanda G, Kumar A. Bacterial quorum sensing: circuits and applications. Antonie Van Leeuwenhoek 2013; 105:289-305. [DOI: 10.1007/s10482-013-0082-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 11/16/2013] [Indexed: 11/28/2022]
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112
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Salta M, Wharton JA, Dennington SP, Stoodley P, Stokes KR. Anti-biofilm performance of three natural products against initial bacterial attachment. Int J Mol Sci 2013; 14:21757-80. [PMID: 24192819 PMCID: PMC3856033 DOI: 10.3390/ijms141121757] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 10/13/2013] [Accepted: 10/15/2013] [Indexed: 01/15/2023] Open
Abstract
Marine bacteria contribute significantly towards the fouling consortium, both directly (modern foul release coatings fail to prevent "slime" attachment) and indirectly (biofilms often excrete chemical cues that attract macrofouling settlement). This study assessed the natural product anti-biofilm performance of an extract of the seaweed, Chondrus crispus, and two isolated compounds from terrestrial sources, (+)-usnic acid and juglone, against two marine biofilm forming bacteria, Cobetia marina and Marinobacter hydrocarbonoclasticus. Bioassays were developed using quantitative imaging and fluorescent labelling to test the natural products over a range of concentrations against initial bacterial attachment. All natural products affected bacterial attachment; however, juglone demonstrated the best anti-biofilm performance against both bacterial species at a concentration range between 5-20 ppm. In addition, for the first time, a dose-dependent inhibition (hormetic) response was observed for natural products against marine biofilm forming bacteria.
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Affiliation(s)
- Maria Salta
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +44-0-2380-593761; Fax: +44-0-2380-5930161
| | - Julian A. Wharton
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
| | - Simon P. Dennington
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
| | - Paul Stoodley
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
| | - Keith R. Stokes
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
- Physical Sciences Department, the Defence Science and Technology Laboratory, Porton Down, Salisbury, Wiltshire SP4 0JQ, UK
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113
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Li YX, Wu HX, Xu Y, Shao CL, Wang CY, Qian PY. Antifouling activity of secondary metabolites isolated from chinese marine organisms. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2013; 15:552-8. [PMID: 23613141 DOI: 10.1007/s10126-013-9502-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Accepted: 03/13/2013] [Indexed: 06/02/2023]
Abstract
Biofouling results in tremendous economic losses to maritime industries around the world. A recent global ban on the use of organotin compounds as antifouling agents has further raised demand for safe and effective antifouling compounds. In this study, 49 secondary metabolites, including diterpenoids, steroids, and polyketides, were isolated from soft corals, gorgonians, brown algae, and fungi collected along the coast of China, and their antifouling activity was tested against cyprids of the barnacle Balanus (Amphibalanus) amphitrite. Twenty of the compounds were found to inhibit larval settlement significantly at a concentration of 25 μg ml(-1). Two briarane diterpenoids, juncin O (2) and juncenolide H (3), were the most promising non-toxic antilarval settlement candidates, with EC50 values less than 0.13 μg ml(-1) and a safety ratio (LC50/EC50) higher than 400. A preliminary structure-activity relationships study indicated that both furanon and furan moieties are important for antifouling activity. Intriguingly, the presence of hydroxyls enhanced their antisettlement activity.
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Affiliation(s)
- Yong-Xin Li
- KAUST Global Collaborative Research, Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, People's Republic of China
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114
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Cahill PL, Heasman K, Jeffs A, Kuhajek J. Laboratory assessment of the antifouling potential of a soluble-matrix paint laced with the natural compound polygodial. BIOFOULING 2013; 29:967-975. [PMID: 23919801 DOI: 10.1080/08927014.2013.822488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Polygodial is a potent and selective inhibitor of ascidian metamorphosis that shows promise for controlling fouling by ascidians in bivalve aquaculture. The current study examined the potency of, and associated effects of seawater exposure on, a rosin-based soluble-matrix paint laced with 0.08-160 ng polygodial g(-1) wet paint matrix. Paint-coated surfaces were soaked in seawater for 0, 2, 4 or 12 weeks prior to screening for antifouling activity using a bioassay based on the nuisance ascidian Ciona savignyi Herdman. Mortality was greater (mean 50% lethal concentration: 5 ± 2 ng g(-1); mean 75% lethal concentration: 17 ± 4 ng g(-1)) and metamorphosis was inhibited (mean 50% anti-metamorphic concentration: 2 ± 0.4 ng g(-1); mean 75% anti-metamorphic concentration: 15 ± 10 ng g(-1)) in C. savignyi larvae exposed to polygodial-laced soluble-matrix paints, relative to control paints without polygodial. Soaking in seawater prior to testing reduced the efficacy of the formulation up to nearly 12-fold, but even after soaking for 12 weeks paints laced with polygodial at 160 ng g(-1) wet paint matrix prevented ⩾90% of the larvae of C. savignyi from completing metamorphosis. The outcome of this experiment provides a positive first step in evaluating the suitability of polygodial-laced soluble-matrix paints for use in aquaculture.
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115
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Müller WEG, Wang X, Proksch P, Perry CC, Osinga R, Gardères J, Schröder HC. Principles of biofouling protection in marine sponges: a model for the design of novel biomimetic and bio-inspired coatings in the marine environment? MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2013; 15:375-398. [PMID: 23525893 DOI: 10.1007/s10126-013-9497-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 03/09/2013] [Indexed: 06/02/2023]
Abstract
The process of biofouling of marine structures and substrates, such as platforms or ship hulls, proceeds in multiple steps. Soon after the formation of an initial conditioning film, formed via the adsorption of organic particles to natural or man-made substrates, a population of different bacterial taxa associates under the formation of a biofilm. These microorganisms communicate through a complex quorum sensing network. Macro-foulers, e.g., barnacles, then settle and form a fouling layer on the marine surfaces, a process that globally has severe impacts both on the economy and on the environment. Since the ban of tributyltin, an efficient replacement of this antifouling compound by next-generation antifouling coatings that are environmentally more acceptable and also showing longer half-lives has not yet been developed. The sponges, as sessile filter-feeder animals, have evolved antifouling strategies to protect themselves against micro- and subsequent macro-biofouling processes. Experimental data are summarized and suggest that coating of the sponge surface with bio-silica contributes to the inhibition of the formation of a conditioning film. A direct adsorption of the surfaces by microorganisms can be impaired through poisoning the organisms with direct-acting secondary metabolites or toxic peptides. In addition, first, compounds from sponges have been identified that interfere with the anti-quorum sensing network. Sponge secondary metabolites acting selectively on diatom colonization have not yet been identified. Finally, it is outlined that direct-acting secondary metabolites inhibiting the growth of macro-fouling animals and those that poison the multidrug resistance pump are available. It is concluded that rational screening programs for inhibitors of the complex and dynamic problem of biofilm production, based on multidisciplinary studies and using sponges as a model, are required in the future.
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Affiliation(s)
- Werner E G Müller
- ERC Advanced Investigator Grant Research Group at Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128 Mainz, Germany.
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116
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Zhao X, Chen W, Su Y, Zhu W, Peng J, Jiang Z, Kong L, Li Y, Liu J. Hierarchically engineered membrane surfaces with superior antifouling and self-cleaning properties. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.04.012] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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117
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Nguyen XC, Longeon A, Pham VC, Urvois F, Bressy C, Trinh TTV, Nguyen HN, Phan VK, Chau VM, Briand JF, Bourguet-Kondracki ML. Antifouling 26,27-cyclosterols from the Vietnamese marine sponge Xestospongia testudinaria. JOURNAL OF NATURAL PRODUCTS 2013; 76:1313-1318. [PMID: 23829580 DOI: 10.1021/np400288j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Three new C29 sterols with a cyclopropane ring cyclized between C-26 and C-27 of the side chain, aragusterol I (1), 21-O-octadecanoyl-xestokerol A (4), and 7β-hydroxypetrosterol (5b), were isolated from the Vietnamese marine sponge Xestospongia testudinaria, along with the known compounds, aragusterol B (2), xestokerol A (3), 7α-hydroxypetrosterol (5a), 7-oxopetrosterol (6), and petrosterol (7). The structures of the new compounds were established by analysis of spectroscopic data including 1D and 2D NMR, and high-resolution electrospray ionization mass spectrometry (HRESIMS). Their capacity to inhibit the adhesion of isolated bacteria from marine biofilms was evaluated against the bacterial strains Pseudoalteromonas sp. D41, Pseudoalteromonas sp. TC8, and Polaribacter sp. TC5. Aragusterol B (2) and 21-O-octadecanoyl-xestokerol A (4) exhibited the most potent antifouling activity with EC50 values close to these reported in the literature for tributyltin oxide, a marine anti-biofouling agent now considered to be a severe marine pollutant. Due to its comparable activity to tributyltin oxide and its absence of toxicity, the new 26,27-cyclosterol, 21-O-octadecanoyl-xestokerol A (4) constitutes a promising scaffold for further investigations.
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Affiliation(s)
- Xuan Cuong Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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118
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Lai D, Geng Z, Deng Z, van Ofwegen L, Proksch P, Lin W. Cembranoids from the soft coral Sinularia rigida with antifouling activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4585-4592. [PMID: 23621324 DOI: 10.1021/jf401303q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Chemical examination of the soft coral Sinularia rigida resulted in the isolation of 12 new cembranoids, namely, sinulariols T-Z5 (1-12), together with a known analogue, 13. Their structures were determined on the basis of 1D and 2D NMR (COSY, HSQC, HMBC, and NOESY) spectroscopic analyses in association with MS and IR data. Compounds 7 and 13 showed potent antifouling activity for the inhibition against the barnacle Balanus amphitrite and moderate inhibition against Bugula neritina . The primary structure-activity relationship is discussed.
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Affiliation(s)
- Daowan Lai
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, People's Republic of China
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119
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Abstract
This review covers the literature published in 2011 for marine natural products, with 870 citations (558 for the period January to December 2011) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1152 for 2011), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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120
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Han Z, Sun J, Zhang Y, He F, Xu Y, Matsumura K, He LS, Qiu JW, Qi SH, Qian PY. iTRAQ-Based Proteomic Profiling of the Barnacle Balanus amphitrite in Response to the Antifouling Compound Meleagrin. J Proteome Res 2013; 12:2090-100. [PMID: 23540395 DOI: 10.1021/pr301083e] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Zhuang Han
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South
China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China
- Division of Life Sciences, The Hong Kong University of Science and Technology,
Clear Water Bay, Hong Kong, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Jin Sun
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Yu Zhang
- Division of Life Sciences, The Hong Kong University of Science and Technology,
Clear Water Bay, Hong Kong, China
- Shenzhen Key
Laboratory of Marine Bioresource and Eco-environmental Science, College
of Life Science, Shenzhen University, Shenzhen,
China
| | - Fei He
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South
China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China
| | - Ying Xu
- Division of Life Sciences, The Hong Kong University of Science and Technology,
Clear Water Bay, Hong Kong, China
| | - Kiyotaka Matsumura
- Division of Life Sciences, The Hong Kong University of Science and Technology,
Clear Water Bay, Hong Kong, China
| | - Li-Sheng He
- Division of Life Sciences, The Hong Kong University of Science and Technology,
Clear Water Bay, Hong Kong, China
| | - Jian-Wen Qiu
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Shu-Hua Qi
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South
China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China
| | - Pei-Yuan Qian
- Division of Life Sciences, The Hong Kong University of Science and Technology,
Clear Water Bay, Hong Kong, China
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Zhao C, Zhao J, Li X, Wu J, Chen S, Chen Q, Wang Q, Gong X, Li L, Zheng J. Probing structure-antifouling activity relationships of polyacrylamides and polyacrylates. Biomaterials 2013; 34:4714-24. [PMID: 23562049 DOI: 10.1016/j.biomaterials.2013.03.028] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Accepted: 03/11/2013] [Indexed: 01/27/2023]
Abstract
We have synthesized two different polyacrylamide polymers with amide groups (polySBAA and polyHEAA) and two corresponding polyacrylate polymers without amide groups (polySBMA and polyHEA), with particular attention to the evaluation of the effect of amide group on the hydration and antifouling ability of these systems using both computational and experimental approaches. The influence of polymer architectures of brushes, hydrogels, and nanogels, prepared by different polymerization methods, on antifouling performance is also studied. SPR and ELISA data reveal that all polymers exhibit excellent antifouling ability to repel proteins from undiluted human blood serum/plasma, and such antifouling ability can be further enhanced by presenting amide groups in polySBAA and polyHEAA as compared to polySBMA and polyHEA. The antifouling performance is positively correlated with the hydration properties. Simulations confirm that four polymers indeed have different hydration characteristics, while all presenting a strong hydration overall. Integration of amide group with pendant hydroxyl or sulfobetaine group in polymer backbones is found to increase their surface hydration of polymer chains and thus to improve their antifouling ability. Importantly, we present a proof-of-concept experiment to synthesize polySBAA nanogels, which show a switchable property between antifouling and pH-responsive functions driven by acid-base conditions, while still maintaining high stability in undiluted fetal bovine serum and minimal toxicity to cultured cells. This work provides important structural insights into how very subtle structural changes in polymers can yield great improvement in biological activity, specifically the inclusion of amide group in polymer backbone/sidechain enables to obtain antifouling materials with better performance for biomedical applications.
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Affiliation(s)
- Chao Zhao
- Department of Chemical and Biomolecular Engineering, The University of Akron, Akron, OH 44325, USA
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122
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Dobretsov S, Abed RMM, Teplitski M. Mini-review: Inhibition of biofouling by marine microorganisms. BIOFOULING 2013; 29:423-41. [PMID: 23574279 DOI: 10.1080/08927014.2013.776042] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Any natural or artificial substratum exposed to seawater is quickly fouled by marine microorganisms and later by macrofouling species. Microfouling organisms on the surface of a substratum form heterogenic biofilms, which are composed of multiple species of heterotrophic bacteria, cyanobacteria, diatoms, protozoa and fungi. Biofilms on artificial structures create serious problems for industries worldwide, with effects including an increase in drag force and metal corrosion as well as a reduction in heat transfer efficiency. Additionally, microorganisms produce chemical compounds that may induce or inhibit settlement and growth of other fouling organisms. Since the last review by the first author on inhibition of biofouling by marine microbes in 2006, significant progress has been made in the field. Several antimicrobial, antialgal and antilarval compounds have been isolated from heterotrophic marine bacteria, cyanobacteria and fungi. Some of these compounds have multiple bioactivities. Microorganisms are able to disrupt biofilms by inhibition of bacterial signalling and production of enzymes that degrade bacterial signals and polymers. Epibiotic microorganisms associated with marine algae and invertebrates have a high antifouling (AF) potential, which can be used to solve biofouling problems in industry. However, more information about the production of AF compounds by marine microorganisms in situ and their mechanisms of action needs to be obtained. This review focuses on the AF activity of marine heterotrophic bacteria, cyanobacteria and fungi and covers publications from 2006 up to the end of 2012.
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Affiliation(s)
- Sergey Dobretsov
- Department of Marine Science and Fisheries, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Sultanate of Oman.
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124
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125
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Synthesis of cembranoid analogues and evaluation of their potential as quorum sensing inhibitors. Bioorg Med Chem 2013. [DOI: 10.1016/j.bmc.2012.10.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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126
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MUROSAKI T, NOGUCHI T, NOGATA Y, GONG JP. Barnacle Settlement Behavior on Natural Polymer Gels. KOBUNSHI RONBUNSHU 2013. [DOI: 10.1295/koron.70.326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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127
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Silkina A, Bazes A, Mouget JL, Bourgougnon N. Comparative efficiency of macroalgal extracts and booster biocides as antifouling agents to control growth of three diatom species. MARINE POLLUTION BULLETIN 2012; 64:2039-46. [PMID: 22853990 DOI: 10.1016/j.marpolbul.2012.06.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 06/18/2012] [Accepted: 06/27/2012] [Indexed: 06/01/2023]
Abstract
The application of 'booster biocides' Diuron, Tolylfluanid and Copper thiocyanate inbantifouling paints, used to prevent development of biofouling, needs to be monitored before assessing their impacts on the environment. An alternative approach aims to propose eco-friendly and effective antifoulants isolated from marine organisms such as seaweeds. In this study, the effects of 'booster biocides' and the ethanol and dichloromethane extracts from a brown (Sargassum muticum) and a red alga (Ceramium botryocarpum) have been compared by algal growth inhibition tests of marine diatoms. The most efficient extracts were ethanol fraction of S. muticum and C. botryocarpum extracts with growth EC(50)=4.74 and 5.3μg mL(-1) respectively, with reversible diatom growth effect. The booster biocides are more efficient EC(50)=0.52μg mL(-1), but are highly toxic. Results validate the use of macroalgal extracts as non toxic antifouling compounds, and they represent valuable environmentally friendly alternatives in comparison with currently used biocides.
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Affiliation(s)
- Alla Silkina
- Laboratoire de Biotechnologie et Chimie Marines, Université de Bretagne-Sud, Centre de Recherche Saint Maudé, 56321 Lorient Cedex, France.
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128
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Tello E, Castellanos L, Arévalo-Ferro C, Duque C. Disruption in quorum-sensing systems and bacterial biofilm inhibition by cembranoid diterpenes isolated from the octocoral Eunicea knighti. JOURNAL OF NATURAL PRODUCTS 2012; 75:1637-1642. [PMID: 22905751 DOI: 10.1021/np300313k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Three new cembranoid diterpenes, knightine (1), 11(R)-hydroxy-12(20)-en-knightal (2), and 11(R)-hydroxy-12(20)-en-knightol acetate (3), were isolated as minor constituents of the Caribbean gorgonian Eunicea knighti, along with the known cembranoids 4-8. The stereostructures of the new compounds were determined by detailed spectroscopic analyses and a combination of chemical transformations and modified Mosher's methods. All isolated cembranoids were tested against fouling using a quorum-sensing inhibition (QSI) assay and a biofilm inhibition test. Compounds 2, 3, and 6 disrupted QS systems at lower concentrations than kojic acid and Cu(2)O, and in most cases cembranoids 1-8 showed bacterial biofilm inhibition at lower concentrations than kojic acid.
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Affiliation(s)
- Edisson Tello
- Departamento de Química, Universidad Nacional de Colombia, AA 14490, Bogotá, Colombia
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129
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Correa H, Zorro P, Arevalo-Ferro C, Puyana M, Duque C. Possible Ecological Role of Pseudopterosins G and P-U and SECO-Pseudopterosins J and K from the Gorgonian Pseudopterogorgia elisabethae from Providencia Island (SW Caribbean) in Regulating Microbial Surface Communities. J Chem Ecol 2012; 38:1190-202. [DOI: 10.1007/s10886-012-0182-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 07/30/2012] [Accepted: 08/10/2012] [Indexed: 11/28/2022]
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130
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Salaün S, La Barre S, Dos Santos-Goncalvez M, Potin P, Haras D, Bazire A. Influence of exudates of the kelp Laminaria digitata on biofilm formation of associated and exogenous bacterial epiphytes. MICROBIAL ECOLOGY 2012; 64:359-69. [PMID: 22476759 DOI: 10.1007/s00248-012-0048-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 03/17/2012] [Indexed: 05/31/2023]
Abstract
Wild populations of brown marine algae (Phaeophyta) provide extensive surfaces to bacteria and epiphytic eukaryotes for colonization. On one hand, various strategies allow kelps prevent frond surface fouling which would retard growth by reducing photosynthesis and increasing pathogenesis. On the other hand, production and release of organic exudates of high energy value, sometimes in association with more or less selective control of settlement of epiphytic strains, allow bacteria to establish surface consortia not leading to macrofouling. Here, we present the analysis of adhesion and biofilm formation of bacterial isolates from the kelp Laminaria digitata and of characterized and referenced marine isolates. When they were grown in flow cell under standard nutrient regimes, all used bacteria, except one, were able to adhere on glass and then develop as biofilms, with different architecture. Then, we evaluated the effect of extracts from undisturbed young Laminaria thalli and from young thalli subjected to oxidative stress elicitation; this latter condition induced the production of defense molecules. We observed increasing or decreasing adhesion depending on the referenced strains, but no effects were observed against strains isolated from L. digitata. Such effects were less observed on biofilms. Our results suggested that L. digitata is able to modulate its bacterial colonization. Finally, mannitol, a regular surface active component of Laminaria exudates was tested individually, and it showed a pronounced increased on one biofilm strain. Results of these experiments are original and can be usefully linked to what we already know on the oxidative halogen metabolism peculiar to Laminaria. Hopefully, we will be able to understand more about the unique relationship that bacteria have been sharing with Laminaria for an estimated one billion years.
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Affiliation(s)
- Stéphanie Salaün
- Laboratoire de Biotechnologie et de Chimie Marines, Université de Bretagne-Sud, EA3884, BP 92116, 56321, Lorient, France
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131
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Chen D, Liu D, Shen S, Cheng W, Lin W. Terpenoids from a Chinese Gorgonian
Anthogorgia
sp. and Their Antifouling Activities. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201200412] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Dawei Chen
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Dong Liu
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Shi Shen
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Wei Cheng
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China
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132
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Cho JY, Kang JY, Hong YK, Baek HH, Shin HW, Kim MS. Isolation and structural determination of the antifouling diketopiperazines from marine-derived Streptomyces praecox 291-11. Biosci Biotechnol Biochem 2012; 76:1116-21. [PMID: 22790932 DOI: 10.1271/bbb.110943] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Marine derived actinomycetes constituting 185 strains were screened for their antifouling activity against the marine seaweed, Ulva pertusa, and fouling diatom, Navicula annexa. Strain 291-11 isolated from the seaweed, Undaria pinnatifida, rhizosphere showed the highest antifouling activity and was identified as Streptomyces praecox based on a 16S rDNA sequence analysis. Strain 291-11 was therefore named S. praecox 291-11. The antifouling compounds from S. praecox 291-11 were isolated, and their structures were analyzed. The chemical constituents representing the antifouling activity were identified as (6S,3S)-6-benzyl-3-methyl-2,5-diketopiperazine (bmDKP) and (6S,3S)-6-isobutyl-3-methyl-2,5-diketopiperazine (imDKP) by interpreting the nuclear magnetic resonance and high-resolution mass spectroscopy data. Approximately 4.8 mg of bmDKP and 3.1 mg of imDKP were isolated from 1.2 g of the S. praecox 291-11 crude extract. Eight different compositions of culture media were investigated for culture, the TBFeC medium being best for bmDKP and TCGC being the optimum for imDKP production. Two compounds respectively showed a 17.7 and 21 therapeutic ratio (LC50/EC50) to inhibit zoospores, and two compounds respectively showed a 263 and 120.2 therapeutic ratio to inhibit diatoms.
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Affiliation(s)
- Ji Young Cho
- Department of Marine Biotechnology, Soon Chun Hyang University, Asan, Korea.
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133
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Quorum quenching revisited--from signal decays to signalling confusion. SENSORS 2012; 12:4661-96. [PMID: 22666051 PMCID: PMC3355433 DOI: 10.3390/s120404661] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 03/23/2012] [Accepted: 03/26/2012] [Indexed: 12/12/2022]
Abstract
In a polymicrobial community, while some bacteria are communicating with neighboring cells (quorum sensing), others are interrupting the communication (quorum quenching), thus creating a constant arms race between intercellular communication. In the past decade, numerous quorum quenching enzymes have been found and initially thought to inactivate the signalling molecules. Though this is widely accepted, the actual roles of these quorum quenching enzymes are now being uncovered. Recent evidence extends the role of quorum quenching to detoxification or metabolism of signalling molecules as food and energy source; this includes “signalling confusion”, a term coined in this paper to refer to the phenomenon of non-destructive modification of signalling molecules. While quorum quenching has been explored as a novel anti-infective therapy targeting, quorum sensing evidence begins to show the development of resistance against quorum quenching.
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134
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135
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Gordaliza M. Synthetic strategies to terpene quinones/hydroquinones. Mar Drugs 2012; 10:358-402. [PMID: 22412807 PMCID: PMC3297003 DOI: 10.3390/md10020358] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 02/03/2012] [Accepted: 02/03/2012] [Indexed: 12/26/2022] Open
Abstract
The cytotoxic and antiproliferative properties of many natural sesquiterpene-quinones and -hydroquinones from sponges offer promising opportunities for the development of new drugs. A review dealing with different strategies for obtaining bioactive terpenyl quinones/hydroquinones is presented. The different synthetic approches for the preparation of the most relevant quinones/hydroquinones are described.
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Affiliation(s)
- Marina Gordaliza
- Farmacy Faculty and Institute of Science and Technology Studies, Campus Miguel de Unamuno, Salamanca University, 37007 Salamanca, Spain
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136
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Chen D, Yu S, van Ofwegen L, Proksch P, Lin W. Anthogorgienes A-O, new guaiazulene-derived terpenoids from a Chinese gorgonian Anthogorgia species, and their antifouling and antibiotic activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:112-123. [PMID: 22148226 DOI: 10.1021/jf2040862] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Fifteen new guaiazulene-based terpenoids designated anthogorgienes A-O (1-15) were isolated from a Chinese gorgonian Anthogorgia sp., together with eight known analogues (16-23). The structural patterns were classified into monomers, dimers, and trimers, which were supposed to be generated from a precursor guaiazulene and followed by side-chain and nucleus oxidation and oxidative rearrangement. The structures of new compounds were elucidated on the basis of extensive spectroscopic (IR, MS, and 1D and 2D NMR) data analysis. A possible biogenetic relationship of the isolated compounds was postulated. Some of the compounds showed potent antifouling activities against the larval settlement of barnacle Balanus amphitrite , whereas their antibiotic activities were also evaluated.
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Affiliation(s)
- Dawei Chen
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, People's Republic of China
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137
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138
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Li Y, Zhang F, Xu Y, Matsumura K, Han Z, Liu L, Lin W, Jia Y, Qian PY. Structural optimization and evaluation of butenolides as potent antifouling agents: modification of the side chain affects the biological activities of compounds. BIOFOULING 2012; 28:857-864. [PMID: 22920194 DOI: 10.1080/08927014.2012.717071] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A recent global ban on the use of organotin compounds as antifouling agents has increased the need for safe and effective antifouling compounds. In this study, a series of new butenolide derivatives with various amine side chains was synthesized and evaluated for their anti-larval settlement activities in the barnacle, Balanus amphitrite. Side chain modification of butenolide resulted in butenolides 3c-3d, which possessed desirable physico-chemical properties and demonstrated highly effective non-toxic anti-larval settlement efficacy. A structure-activity relationship analysis revealed that varying the alkyl side chain had a notable effect on anti-larval settlement activity and that seven to eight carbon alkyl side chains with a tert-butyloxycarbonyl (Boc) substituent on an amine terminal were optimal in terms of bioactivity. Analysis of the physico-chemical profile of butenolide analogues indicated that lipophilicity is a very important physico-chemical parameter contributing to bioactivity.
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Affiliation(s)
- Yongxin Li
- KAUST Global Collaborative Research, Division of Life Science, Hong Kong University of Science and Technology , Clear Water Bay , Hong Kong , PR China
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139
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Phelan VV, Liu WT, Pogliano K, Dorrestein PC. Microbial metabolic exchange--the chemotype-to-phenotype link. Nat Chem Biol 2011; 8:26-35. [PMID: 22173357 DOI: 10.1038/nchembio.739] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The function of microbial interactions is to enable microorganisms to survive by establishing a homeostasis between microbial neighbors and local environments. A microorganism can respond to environmental stimuli using metabolic exchange-the transfer of molecular factors, including small molecules and proteins. Microbial interactions not only influence the survival of the microbes but also have roles in morphological and developmental processes of the organisms themselves and their neighbors. This, in turn, shapes the entire habitat of these organisms. Here we highlight our current understanding of metabolic exchange as well as the emergence of new technologies that are allowing us to eavesdrop on microbial conversations comprising dozens to hundreds of secreted metabolites that control the behavior, survival and differentiation of members of the community. The goal of the rapidly advancing field studying multifactorial metabolic exchange is to devise a microbial 'Rosetta stone' in order to understand the language by which microbial interactions are negotiated and, ultimately, to control the outcome of these conversations.
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Affiliation(s)
- Vanessa V Phelan
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, California, USA
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140
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Murosaki T, Ahmed N, Ping Gong J. Antifouling properties of hydrogels. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2011; 12:064706. [PMID: 27877456 PMCID: PMC5090671 DOI: 10.1088/1468-6996/12/6/064706] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 01/06/2012] [Accepted: 12/05/2011] [Indexed: 05/05/2023]
Abstract
Marine sessile organisms easily adhere to submerged solids such as rocks, metals and plastics, but not to seaweeds and fishes, which are covered with soft and wet 'hydrogel'. Inspired by this fact, we have studied long-term antifouling properties of hydrogels against marine sessile organisms. Hydrogels, especially those containing hydroxy group and sulfonic group, show excellent antifouling activity against barnacles both in laboratory assays and in the marine environment. The extreme low settlement on hydrogels in vitro and in vivo is mainly caused by antifouling properties against the barnacle cypris.
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Affiliation(s)
- Takayuki Murosaki
- Laboratory of Soft and Wet Matter, Faculty of Advanced Life Science, Hokkaido University 060-0810 Sapporo, Japan
| | - Nafees Ahmed
- Laboratory of Soft and Wet Matter, Graduate School of Science, Hokkaido University 060-0810 Sapporo, Japan
| | - Jian Ping Gong
- Laboratory of Soft and Wet Matter, Faculty of Advanced Life Science, Hokkaido University 060-0810 Sapporo, Japan
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141
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Pénez N, Culioli G, Pérez T, Briand JF, Thomas OP, Blache Y. Antifouling properties of simple indole and purine alkaloids from the Mediterranean gorgonian Paramuricea clavata. JOURNAL OF NATURAL PRODUCTS 2011; 74:2304-2308. [PMID: 21939218 DOI: 10.1021/np200537v] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Chemical investigation of the Mediterranean gorgonian Paramuricea clavata resulted in the isolation of two new alkaloids, 2-bromo-N-methyltryptamine (1) and 3-bromo-N-methyltyramine (2), together with nine known compounds (3-10 and linderazulene). The bromoindole derivative 3 is reported herein for the first time from a natural source. The chemical structures of these compounds were assigned by spectroscopic analyses and comparison with literature values. The antifouling activity and toxicity of compounds 1-10 were assessed using three marine biofilm bacteria and the Microtox assay. In contrast to commercial antifoulants, bufotenine (5) and 1,3,7-trimethylisoguanine (10) showed significant antiadhesion activity against one bacterial strain while being nontoxic.
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Affiliation(s)
- Nicolas Pénez
- Laboratoire MAPIEM, EA 4323, Biofouling et Substances Naturelles Marines, Université du Sud Toulon-Var, Avenue de l'Université, BP 20132, F-83957 La Garde Cedex, France
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142
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Stowe SD, Richards JJ, Tucker AT, Thompson R, Melander C, Cavanagh J. Anti-biofilm compounds derived from marine sponges. Mar Drugs 2011; 9:2010-2035. [PMID: 22073007 PMCID: PMC3210616 DOI: 10.3390/md9102010] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 09/24/2011] [Accepted: 10/12/2011] [Indexed: 12/16/2022] Open
Abstract
Bacterial biofilms are surface-attached communities of microorganisms that are protected by an extracellular matrix of biomolecules. In the biofilm state, bacteria are significantly more resistant to external assault, including attack by antibiotics. In their native environment, bacterial biofilms underpin costly biofouling that wreaks havoc on shipping, utilities, and offshore industry. Within a host environment, they are insensitive to antiseptics and basic host immune responses. It is estimated that up to 80% of all microbial infections are biofilm-based. Biofilm infections of indwelling medical devices are of particular concern, since once the device is colonized, infection is almost impossible to eliminate. Given the prominence of biofilms in infectious diseases, there is a notable effort towards developing small, synthetically available molecules that will modulate bacterial biofilm development and maintenance. Here, we highlight the development of small molecules that inhibit and/or disperse bacterial biofilms specifically through non-microbicidal mechanisms. Importantly, we discuss several sets of compounds derived from marine sponges that we are developing in our labs to address the persistent biofilm problem. We will discuss: discovery/synthesis of natural products and their analogues—including our marine sponge-derived compounds and initial adjuvant activity and toxicological screening of our novel anti-biofilm compounds.
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Affiliation(s)
- Sean D. Stowe
- Department of Molecular & Structural Biochemistry, North Carolina State University, Raleigh, NC 27695, USA; E-Mails: (S.D.S.); (A.T.T.); (R.T.)
| | - Justin J. Richards
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA; E-Mails: (J.J.R.); (C.M.)
| | - Ashley T. Tucker
- Department of Molecular & Structural Biochemistry, North Carolina State University, Raleigh, NC 27695, USA; E-Mails: (S.D.S.); (A.T.T.); (R.T.)
| | - Richele Thompson
- Department of Molecular & Structural Biochemistry, North Carolina State University, Raleigh, NC 27695, USA; E-Mails: (S.D.S.); (A.T.T.); (R.T.)
| | - Christian Melander
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA; E-Mails: (J.J.R.); (C.M.)
| | - John Cavanagh
- Department of Molecular & Structural Biochemistry, North Carolina State University, Raleigh, NC 27695, USA; E-Mails: (S.D.S.); (A.T.T.); (R.T.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-919-513-4349; Fax: +1-919-515-2047
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