151
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Cooper EL. eCAM: An Emerging Linkage with Ethnopharmacology? EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 5:365-6. [PMID: 19028766 PMCID: PMC2586315 DOI: 10.1093/ecam/nen073] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Edwin L Cooper
- Laboratory of Comparative Neuroimmunology, Department of Neurobiology, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA 90095-1763, USA.
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152
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Pallela R, Bojja S, Janapala VR. Biochemical and biophysical characterization of collagens of marine sponge, Ircinia fusca (Porifera: Demospongiae: Irciniidae). Int J Biol Macromol 2011; 49:85-92. [DOI: 10.1016/j.ijbiomac.2011.03.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Revised: 03/30/2011] [Accepted: 03/31/2011] [Indexed: 10/18/2022]
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153
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LIU TF, TANG H, LI L, GONG W, SUN P, ZHANG W. 5 α,8 α-epidioxy sterol components in gorgonian Muriceopsis flavida collected from the South China Sea. ACTA ACUST UNITED AC 2011. [DOI: 10.3724/sp.j.1008.2011.00469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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154
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Hu JF, Fan H, Xiong J, Wu SB. Discorhabdins and Pyrroloiminoquinone-Related Alkaloids. Chem Rev 2011; 111:5465-91. [DOI: 10.1021/cr100435g] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jin-Feng Hu
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai 201203, China
| | - Hui Fan
- Department of Natural Products for Chemical Genetic Research, Key Laboratory of Brain Functional Genomics, Ministry of Education, East China Normal University, No. 3663 Zhongshan Road N, Shanghai 200062, China
| | - Juan Xiong
- Department of Natural Products Chemistry, School of Pharmacy, Fudan University, No. 826 Zhangheng Road, Shanghai 201203, China
| | - Shi-Biao Wu
- Department of Natural Products for Chemical Genetic Research, Key Laboratory of Brain Functional Genomics, Ministry of Education, East China Normal University, No. 3663 Zhongshan Road N, Shanghai 200062, China
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155
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Sarkar D, Venkateswaran RV. Biomimetic type approach to the tricyclic core of xyloketals. Application to a short, stereocontrolled synthesis of alboatrin and first synthesis of xyloketal G. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.084] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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156
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Tiwari K, Gupta RK. Rare actinomycetes: a potential storehouse for novel antibiotics. Crit Rev Biotechnol 2011; 32:108-32. [DOI: 10.3109/07388551.2011.562482] [Citation(s) in RCA: 182] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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157
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Frija LMT, Frade RFM, Afonso CAM. Isolation, chemical, and biotransformation routes of labdane-type diterpenes. Chem Rev 2011; 111:4418-52. [PMID: 21618966 DOI: 10.1021/cr100258k] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Luís M T Frija
- CQFM - Centro de Química-Física Molecular and IN - Institute of Nanoscience and Nanotechnology, Departamento de Engenharia Química e Biológica Instituto Superior Técnico, Av. Rovisco Pais 1, 1049-001 Lisboa, Portugal.
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158
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Glöckner FO, Joint I. Marine microbial genomics in Europe: current status and perspectives. Microb Biotechnol 2011; 3:523-30. [PMID: 20953416 PMCID: PMC2948668 DOI: 10.1111/j.1751-7915.2010.00169.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Accepted: 02/06/2010] [Indexed: 11/29/2022] Open
Abstract
The oceans are the Earth's largest ecosystem, covering 70% of our planet and providing goods and services for the majority of the world's population. Understanding the complex abiotic and biotic processes on the micro‐ to macroscale is the key to protect and sustain the marine ecosystem. Marine microorganisms are the ‘gatekeepers’ of the biotic processes that control the global cycles of energy and organic matter. A multinational, multidisciplinary approach, bringing together research on oceanography, biodiversity and genomics, is now needed to understand and finally predict the complex responses of the marine ecosystem to ongoing global changes. Such an integrative approach will not only bring better understanding of the complex interplay of the organisms with their environment, but will reveal a wealth of new metabolic processes and functions, which have a high potential for biotechnological applications. This potential has already been recognized by the European commission which funded a series of workshops and projects on marine genomics in the sixth and seventh framework programme. Nevertheless, there remain many obstacles to achieving the goal – such as a lack of bioinformatics tailored for the marine field, consistent data acquisition and exchange, as well as continuous monitoring programmes and a lack of relevant marine bacterial models. Marine ecosystems research is complex and challenging, but it also harbours the opportunity to cross the borders between disciplines and countries to finally create a rewarding marine research era that is more than the sum of its parts.
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Affiliation(s)
- Frank Oliver Glöckner
- Microbial Genomics Group, Max Planck Institute for Marine Microbiology, D-28359 Bremen, Germany.
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159
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Hu GP, Yuan J, Sun L, She ZG, Wu JH, Lan XJ, Zhu X, Lin YC, Chen SP. Statistical research on marine natural products based on data obtained between 1985 and 2008. Mar Drugs 2011; 9:514-525. [PMID: 21731546 PMCID: PMC3124969 DOI: 10.3390/md9040514] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 03/04/2011] [Accepted: 03/24/2011] [Indexed: 11/25/2022] Open
Abstract
Since the 1960s, more than 20,000 compounds were discovered from marine organisms. In this paper we performed a quantitative analysis for the novel marine natural products reported between 1985 and 2008. The data was extracted mainly from the reviews of Faulkner and Blunt [1–26]. The organisms producing these marine natural products are divided into three major biological classes: marine microorganisms (including phytoplankton), marine algae and marine invertebrate. The marine natural products are divided into seven classes based on their chemical structure: terpenoids, steroids (including steroidal saponins), alkaloids, ethers (including ketals), phenols (including quinones), strigolactones, and peptides. The distribution and the temporal trend of these classes (biological classes and chemical structure classes) were investigated. We hope this article provides a comprehensive perspective on the research of marine natural products.
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Affiliation(s)
- Gu-Ping Hu
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Xingang Xilu, Guangzhou 510275, China; E-Mails: (G.-P.H.); (Z.-G.S.)
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou 510080, China
| | - Jie Yuan
- Zhongshan School of Medicine, Sun Yat-Sen University, Zhongshan Erlu, Guangzhou 510080, China; E-Mails: (J.Y.); (L.S.); (J.-H.W.); (X.-J.L.); (X.Z.)
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou 510080, China
| | - Li Sun
- Zhongshan School of Medicine, Sun Yat-Sen University, Zhongshan Erlu, Guangzhou 510080, China; E-Mails: (J.Y.); (L.S.); (J.-H.W.); (X.-J.L.); (X.Z.)
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou 510080, China
| | - Zhi-Gang She
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Xingang Xilu, Guangzhou 510275, China; E-Mails: (G.-P.H.); (Z.-G.S.)
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou 510080, China
| | - Jue-Heng Wu
- Zhongshan School of Medicine, Sun Yat-Sen University, Zhongshan Erlu, Guangzhou 510080, China; E-Mails: (J.Y.); (L.S.); (J.-H.W.); (X.-J.L.); (X.Z.)
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou 510080, China
| | - Xiu-Jian Lan
- Zhongshan School of Medicine, Sun Yat-Sen University, Zhongshan Erlu, Guangzhou 510080, China; E-Mails: (J.Y.); (L.S.); (J.-H.W.); (X.-J.L.); (X.Z.)
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou 510080, China
| | - Xun Zhu
- Zhongshan School of Medicine, Sun Yat-Sen University, Zhongshan Erlu, Guangzhou 510080, China; E-Mails: (J.Y.); (L.S.); (J.-H.W.); (X.-J.L.); (X.Z.)
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou 510080, China
| | - Yong-Cheng Lin
- School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Xingang Xilu, Guangzhou 510275, China; E-Mails: (G.-P.H.); (Z.-G.S.)
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou 510080, China
- Authors to whom correspondence should be addressed; E-Mails: (Y.-C.L.); (S.-P.C.); Tel.: +86-(0)-20-84039623 (Y.-C.L.); +86-(0)-20-87330603 (S.-P.C.); Fax: +86-(0)-20-84113356 (Y.-C.L.); +86-(0)-20-87330603 (S.-P.C.)
| | - Sheng-Ping Chen
- Zhongshan School of Medicine, Sun Yat-Sen University, Zhongshan Erlu, Guangzhou 510080, China; E-Mails: (J.Y.); (L.S.); (J.-H.W.); (X.-J.L.); (X.Z.)
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-sen University), Department of Education of Guangdong Province, Guangzhou 510080, China
- Authors to whom correspondence should be addressed; E-Mails: (Y.-C.L.); (S.-P.C.); Tel.: +86-(0)-20-84039623 (Y.-C.L.); +86-(0)-20-87330603 (S.-P.C.); Fax: +86-(0)-20-84113356 (Y.-C.L.); +86-(0)-20-87330603 (S.-P.C.)
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160
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Benkendorff K. Molluscan biological and chemical diversity: secondary metabolites and medicinal resources produced by marine molluscs. Biol Rev Camb Philos Soc 2011; 85:757-75. [PMID: 20105155 DOI: 10.1111/j.1469-185x.2010.00124.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The phylum Mollusca represents an enormous diversity of species with eight distinct classes. This review provides a taxonomic breakdown of the published research on marine molluscan natural products and the medicinal products currently derived from molluscs, in order to identify priority targets and strategies for future research. Some marine gastropods and bivalves have been of great interest to natural products chemists, yielding a diversity of chemical classes and several drug leads currently in clinical trials. Molluscs also feature prominently in a broad range of traditional natural medicines, although the active ingredients in the taxa involved are typically unknown. Overall secondary metabolites have only been investigated from a tiny proportion (<1%) of molluscan species. At the class level, the number of species subject to chemical studies mirrors species richness and our relative knowledge of the biology of different taxa. The majority of molluscan natural products research is focused within one of the major groups of gastropods, the opisthobranchs (a subgroup of Heterobranchia), which are primarily comprised of soft-bodied marine molluscs. Conversely, most molluscan medicines are derived from shelled gastropods and bivalves. The complete disregard for several minor classes of molluscs is unjustified based on their evolutionary history and unique life styles, which may have led to novel pathways for secondary metabolism. The Polyplacophora, in particular, have been identified as worthy of future investigation given their use in traditional South African medicines and their abundance in littoral ecosystems. As bioactive compounds are not always constitutively expressed in molluscs, future research should be targeted towards biosynthetic organs and inducible defence reactions for specific medicinal applications. Given the lack of an acquired immune system, the use of bioactive secondary metabolites is likely to be ubiquitous throughout the Mollusca and broadening the search field may uncover interesting novel chemistry.
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Affiliation(s)
- Kirsten Benkendorff
- School of Biological Sciences, Flinders University, GPO Box 2100 Adeliade, 5001, SA, Australia.
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161
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Mayer AMS, Rodríguez AD, Berlinck RGS, Fusetani N. Marine pharmacology in 2007-8: Marine compounds with antibacterial, anticoagulant, antifungal, anti-inflammatory, antimalarial, antiprotozoal, antituberculosis, and antiviral activities; affecting the immune and nervous system, and other miscellaneous mechanisms of action. Comp Biochem Physiol C Toxicol Pharmacol 2011; 153:191-222. [PMID: 20826228 PMCID: PMC7110230 DOI: 10.1016/j.cbpc.2010.08.008] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2010] [Revised: 08/25/2010] [Accepted: 08/25/2010] [Indexed: 11/23/2022]
Abstract
The peer-reviewed marine pharmacology literature in 2007-8 is covered in this review, which follows a similar format to the previous 1998-2006 reviews of this series. The preclinical pharmacology of structurally characterized marine compounds isolated from marine animals, algae, fungi and bacteria is discussed in a comprehensive manner. Antibacterial, anticoagulant, antifungal, antimalarial, antiprotozoal, antituberculosis and antiviral activities were reported for 74 marine natural products. Additionally, 59 marine compounds were reported to affect the cardiovascular, immune and nervous systems as well as to possess anti-inflammatory effects. Finally, 65 marine metabolites were shown to bind to a variety of receptors and miscellaneous molecular targets, and thus upon further completion of mechanism of action studies, will contribute to several pharmacological classes. Marine pharmacology research during 2007-8 remained a global enterprise, with researchers from 26 countries, and the United States, contributing to the preclinical pharmacology of 197 marine compounds which are part of the preclinical marine pharmaceuticals pipeline. Sustained preclinical research with marine natural products demonstrating novel pharmacological activities, will probably result in the expansion of the current marine pharmaceutical clinical pipeline, which currently consists of 13 marine natural products, analogs or derivatives targeting a limited number of disease categories.
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Affiliation(s)
- Alejandro M S Mayer
- Department of Pharmacology, Chicago College of Osteopathic Medicine, Midwestern University, 555 31st Street, Downers Grove, IL 60515, USA.
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162
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Qi Y, Ma S. The medicinal potential of promising marine macrolides with anticancer activity. ChemMedChem 2011; 6:399-409. [PMID: 21302362 DOI: 10.1002/cmdc.201000534] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 01/08/2011] [Indexed: 12/12/2022]
Abstract
Marine natural products have become a major source of new chemical entities in the discovery of potential anticancer agents that potently suppress various molecular targets. In particular, the marine macrolides, which include an array of novel biomolecules endowed with outstanding cytotoxic and/or antiproliferative activities, are a prominent class of marine natural products that offer continued promise for breakthroughs in anticancer research. Herein we highlight some recent studies of promising marine macrolides, paying particular attention to their discovery, anticancer activities, mechanisms of action, chemical synthesis, and representative analogues.
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Affiliation(s)
- Yunkun Qi
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Shandong University, 44, West Culture Road, Jinan 250012, PR China
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163
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Sato S, Iwata F, Takeo J, Kawahara H, Kuramoto M, Uno H. Stellettazole D, a Cytotoxic Imidazole Alkaloid from the Marine SpongeJaspis duoaster. CHEM LETT 2011. [DOI: 10.1246/cl.2011.186] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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164
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Häder DP, Helbling EW, Williamson CE, Worrest RC. Effects of UV radiation on aquatic ecosystems and interactions with climate change. Photochem Photobiol Sci 2011; 10:242-60. [PMID: 21253662 DOI: 10.1039/c0pp90036b] [Citation(s) in RCA: 266] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The health of freshwater and marine ecosystems is critical to life on Earth. The impact of solar UV-B radiation is one potential stress factor that can have a negative impact on the health of certain species within these ecosystems. Although there is a paucity of data and information regarding the effect of UV-B radiation on total ecosystem structure and function, several recent studies have addressed the effects on various species within each trophic level. Climate change, acid deposition, and changes in other anthropogenic stressors such as pollutants alter UV exposure levels in inland and coastal marine waters. These factors potentially have important consequences for a variety of aquatic organisms including waterborne human pathogens. Recent results have demonstrated the negative impacts of exposure to UV-B radiation on primary producers, including effects on cyanobacteria, phytoplankton, macroalgae and aquatic plants. UV-B radiation is an environmental stressor for many aquatic consumers, including zooplankton, crustaceans, amphibians, fish, and corals. Many aquatic producers and consumers rely on avoidance strategies, repair mechanisms and the synthesis of UV-absorbing substances for protection. However, there has been relatively little information generated regarding the impact of solar UV-B radiation on species composition within natural ecosystems or on the interaction of organisms between trophic levels within those ecosystems. There remains the question as to whether a decrease in population size of the more sensitive primary producers would be compensated for by an increase in the population size of more tolerant species, and therefore whether there would be a net negative impact on the absorption of atmospheric carbon dioxide by these ecosystems. Another question is whether there would be a significant impact on the quantity and quality of nutrients cycling through the food web, including the generation of food proteins for humans. Interactive effects of UV radiation with changes in other stressors, including climate change and pollutants, are likely to be particularly important.
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165
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Kim MC, Kwon HC, Kim SN, Kim HS, Um BH. Plastoquinones from Sargassum yezoense; chemical structures and effects on the activation of peroxisome proliferator-activated receptor gamma. Chem Pharm Bull (Tokyo) 2011; 59:834-8. [PMID: 21720032 DOI: 10.1248/cpb.59.834] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Four new plastoquinones, together with two known compounds, sargahydroquinoic acid and sargaquinoic acid, were isolated from the brown alga, Sargassum yezoense collected from the eastern coast of Korea. The structures of these compounds were elucidated based on spectroscopic analyses including NMR and MS. Their structures designated as meroterphenol A (1), B (2), C (3) and D (4) were characterized by a 6-methyl-1,4-benzohydroquinone moiety with an oxygenated diterpenoic acid chain. Meroterphenols A-D showed potent activation effects on peroxisome proliferator-activated receptor gamma (PPARγ).
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Affiliation(s)
- Min Cheol Kim
- Natural Products Research Center, Korea Institute of Science and Technology (KIST), Gangneung 210–340, Korea
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166
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Growth Inhibition and Apoptosis with H31 Metabolites from Marine Bacillus SW31 in Head and Neck Cancer Cells. Clin Exp Otorhinolaryngol 2010; 3:217-25. [PMID: 21217964 PMCID: PMC3010542 DOI: 10.3342/ceo.2010.3.4.217] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2010] [Accepted: 11/01/2010] [Indexed: 12/16/2022] Open
Abstract
Objectives To determine whether a novel marine micro-organism with anticancer properties, H31, the metabolic product of Bacillus SW31, has anti-tumor effects on head and neck cancer, and potential for apoptotic-enhancing anti-cancer treatment of affected patients. Methods The cell viability and apoptosis assays were performed. Changes in the signal pathway related to apoptosis were investigated. Then, the therapeutic effects of H31 were explored in mouse xenograft model and drug toxicity of H31 was examined in zebrafish model. Results We identified the anticancer activity of H31, a novel metabolic product of Bacillus SW31. Bacillus SW31, a new marine micro-organism, has 70% homology with Bacillus firmus and contains potent cytotoxic bioactivity in head and neck cancer cells using MTT assay. Combined with c-JUN, p53, cytochrome C, and caspase-3, H31 induced apoptosis of KB cells, a head and neck cancer cell line. In a separate in vivo model, tumor growth in C3H/HeJ syngeneic mice was suppressed by H31. In addition, in a zebrafish model used for toxicity testing, a considerable dose of H31 did not result in embryo or neurotoxicity. Conclusion Growth inhibition and apoptosis were achieved both in vitro and in vivo in head and neck cancer cells after exposure to H31, a metabolite from the marine Bacillus species, without any significant toxicity effects even at considerable H31 dose concentrations.
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167
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Exploring the links between natural products and bacterial assemblages in the sponge Aplysina aerophoba. Appl Environ Microbiol 2010; 77:862-70. [PMID: 21115701 DOI: 10.1128/aem.00100-10] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The sponge Aplysina aerophoba produces a large diversity of brominated alkaloids (BAs) and hosts a complex microbial assemblage. Although BAs are located within sponge cells, the enzymes that bind halogen elements to organic compounds have been exclusively described in algae, fungi, and bacteria. Bacterial communities within A. aerophoba could therefore be involved in the biosynthesis of these compounds. This study investigates whether changes in both the concentration of BAs and the bacterial assemblages are correlated in A. aerophoba. To do so, we quantified major natural products using high-performance liquid chromatography and analyzed bacterial assemblages using denaturing gradient gel electrophoresis on the 16S rRNA gene. We identified multiple associations between bacteria and natural products, including a strong relationship between a Chloroflexi phylotype and aplysinamisin-1 and between an unidentified bacterium and aerophobin-2 and isofistularin-3. Our results suggest that these bacteria could either be involved in the production of BAs or be directly affected by them. To our knowledge, this is one of the first reports that find a significant correlation between natural products and bacterial populations in any benthic organism. Further investigating these associations will shed light on the organization and functioning of host-endobiont systems such as Aplysina aerophoba.
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168
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The expanding role of marine microbes in pharmaceutical development. Curr Opin Biotechnol 2010; 21:780-6. [PMID: 20956080 DOI: 10.1016/j.copbio.2010.09.013] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2010] [Revised: 09/06/2010] [Accepted: 09/17/2010] [Indexed: 01/19/2023]
Abstract
Marine microbes have received growing attention as sources of bioactive metabolites and offer a unique opportunity to both increase the number of marine natural products in clinical trials as well as expedite their development. This review focuses specifically on those molecules currently in the clinical pipeline that are established or highly likely to be produced by bacteria based on expanding circumstantial evidence. We also include an example of how compounds from harmful algal blooms may yield both tools for measuring environmental change as well as leads for pharmaceutical development. An example of the karlotoxin class of compounds isolated from the dinoflagellate Karlodinium veneficum reveals a significant environmental impact in the form of massive fish kills, but also provides opportunities to construct new molecules for the control of cancer and serum cholesterol assisted by tools associated with rational drug design.
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169
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Sobolevskaya MP, Kuznetsova TA. Biologically active metabolites of marine actinobacteria. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2010; 36:607-21. [DOI: 10.1134/s1068162010050031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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170
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Alcaide B, Almendros P, Carrascosa R, Martínez del Campo T. Metal-Catalyzed Cycloetherification Reactions of β,γ- and γ,δ-Allendiols: Chemo-, Regio-, and Stereocontrol in the Synthesis of Oxacycles. Chemistry 2010; 16:13243-52. [DOI: 10.1002/chem.201001520] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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171
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Hirashima M, Tsuda K, Hamada T, Okamura H, Furukawa T, Akiyama SI, Tajitsu Y, Ikeda R, Komatsu M, Doe M, Morimoto Y, Shiro M, van Soest RWM, Takemura K, Iwagawa T. Cytotoxic isomalabaricane derivatives and a monocyclic triterpene glycoside from the sponge Rhabdastrella globostellata. JOURNAL OF NATURAL PRODUCTS 2010; 73:1512-1518. [PMID: 20718449 DOI: 10.1021/np100302a] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Seven new isomalabaricane derivatives, rhabdastins A-G (1-7), and a new monocyclic triterpene glycoside, rhabdastoside A (8), have been isolated from the methanol extract of the sponge Rhabdastrella globostellata, collected at Amami-oshima, Japan. Three of them were isolated as their corresponding methyl esters, rhabdastins A-D (1-3). Their structures were determined on the basis of spectroscopic and X-ray diffraction analyses. The isolated compounds were evaluated for their cytotoxicity against the proliferation of promyelocytic leukemia HL-60 cells. Compounds 4, 5, 7, and 11, possessing a cyclopentane side chain, exhibited weak activity, with IC(50) values of 21, 29, 44, and 11 μM, respectively, while compounds 1, 2, and 3, with a 2-substituted-propanoate side chain, were inactive at 100 μM. In addition, the mechanism of cytotoxicity of compounds 4 and 5 was investigated.
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Affiliation(s)
- Miyabi Hirashima
- Department of Chemistry and Bioscience, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan
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Shaker K, Müller M, Ghani M, Dahse HM, Seifert K. Terpenes from the Soft Corals Litophyton arboreum and Sarcophyton ehrenbergi. Chem Biodivers 2010; 7:2007-15. [DOI: 10.1002/cbdv.201000016] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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173
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Cabrita MT, Vale C, Rauter AP. Halogenated compounds from marine algae. Mar Drugs 2010; 8:2301-17. [PMID: 20948909 PMCID: PMC2953405 DOI: 10.3390/md8082301] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 07/23/2010] [Accepted: 08/02/2010] [Indexed: 02/07/2023] Open
Abstract
Marine algae produce a cocktail of halogenated metabolites with potential commercial value. Structures exhibited by these compounds go from acyclic entities with a linear chain to complex polycyclic molecules. Their medical and pharmaceutical application has been investigated for a few decades, however other properties, such as antifouling, are not to be discarded. Many compounds were discovered in the last years, although the need for new drugs keeps this field open as many algal species are poorly screened. The ecological role of marine algal halogenated metabolites has somehow been overlooked. This new research field will provide valuable and novel insight into the marine ecosystem dynamics as well as a new approach to comprehending biodiversity. Furthermore, understanding interactions between halogenated compound production by algae and the environment, including anthropogenic or global climate changes, is a challenging target for the coming years. Research of halogenated metabolites has been more focused on macroalgae than on phytoplankton. However, phytoplankton could be a very promising material since it is the base of the marine food chain with quick adaptation to environmental changes, which undoubtedly has consequences on secondary metabolism. This paper reviews recent progress on this field and presents trends on the role of marine algae as producers of halogenated compounds.
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Affiliation(s)
| | - Carlos Vale
- IPIMAR, Av. de Brasília, 1449-006 Lisboa, Portugal; E-Mail: (C.V.)
| | - Amélia Pilar Rauter
- Centro de Química e Bioquímica/Departamento de Química e Bioquímica da Faculdade de Ciências da Universidade de Lisboa, Ed C8, Piso 5, Campo Grande, 1749-016 Lisboa, Portugal; E-Mail: (A.P.R.)
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174
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Lee JB, Ohta Y, Hayashi K, Hayashi T. Immunostimulating effects of a sulfated galactan from Codium fragile. Carbohydr Res 2010; 345:1452-4. [DOI: 10.1016/j.carres.2010.02.026] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Revised: 02/24/2010] [Accepted: 02/26/2010] [Indexed: 10/19/2022]
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175
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Akbaba Y, Türker Balaydın H, Göksu S, Şahin E, Menzek A. Total Synthesis of the Biologically Active, Naturally Occurring 3,4-Dibromo-5-[2-bromo-3,4-dihydroxy-6-(methoxymethyl)benzyl]benzene-1,2-diol and Regioselective O-Demethylation of Aryl Methyl Ethers. Helv Chim Acta 2010. [DOI: 10.1002/hlca.200900300] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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176
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Abstract
Marine bacteria and fungi are of considerable importance as new promising sources of a huge number of biologically active products. Some of these marine species live in a stressful habitat, under cold, lightless and high pressure conditions. Surprisingly, a large number of species with high diversity survive under such conditions and produce fascinating and structurally complex natural products. Up till now, only a small number of microorganisms have been investigated for bioactive metabolites, yet a huge number of active substances with some of them featuring unique structural skeletons have been isolated. This review covers new biologically active natural products published recently (2007-09) and highlights the chemical potential of marine microorganisms, with focus on bioactive products as well as on their mechanisms of action.
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Affiliation(s)
- Abdessamad Debbab
- Institut für Pharmazeutische Biologie und Biotechnologie, Heinrich-Heine Universitaet Duesseldorf, Germany
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177
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Roze LV, Chanda A, Linz JE. Compartmentalization and molecular traffic in secondary metabolism: a new understanding of established cellular processes. Fungal Genet Biol 2010; 48:35-48. [PMID: 20519149 DOI: 10.1016/j.fgb.2010.05.006] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 05/11/2010] [Accepted: 05/12/2010] [Indexed: 01/15/2023]
Abstract
Great progress has been made in understanding the regulation of expression of genes involved in secondary metabolism. Less is known about the mechanisms that govern the spatial distribution of the enzymes, cofactors, and substrates that mediate catalysis of secondary metabolites within the cell. Filamentous fungi in the genus Aspergillus synthesize an array of secondary metabolites and provide useful systems to analyze the mechanisms that mediate the temporal and spatial regulation of secondary metabolism in eukaryotes. For example, aflatoxin biosynthesis in Aspergillus parasiticus has been studied intensively because this mycotoxin is highly toxic, mutagenic, and carcinogenic in humans and animals. Using aflatoxin synthesis to illustrate key concepts, this review focuses on the mechanisms by which sub-cellular compartmentalization and intra-cellular molecular traffic contribute to the initiation and completion of secondary metabolism within the cell. We discuss the recent discovery of aflatoxisomes, specialized trafficking vesicles that participate in the compartmentalization of aflatoxin synthesis and export of the toxin to the cell exterior; this work provides a new and clearer understanding of how cells integrate secondary metabolism into basic cellular metabolism via the intra-cellular trafficking machinery.
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Affiliation(s)
- Ludmila V Roze
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI-48824, USA
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178
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Meyer SW, Mordhorst TF, Lee C, Jensen PR, Fenical W, Köck M. Penilumamide, a novel lumazine peptide isolated from the marine-derived fungus, Penicillium sp. CNL-338. Org Biomol Chem 2010; 8:2158-63. [PMID: 20401392 PMCID: PMC3779348 DOI: 10.1039/b910629d] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel lumazine peptide, penilumamide (1), was isolated from the fermentation broth of a marine-derived fungal strain, identified as Penicillium sp. (strain CNL-338) and the structure of the new metabolite was determined by analysis of ESI-TOF MS data combined with 1D and 2D NMR experiments.
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Affiliation(s)
- Sven W Meyer
- Alfred-Wegener-Institut für Polar- und Meeresforschung in der Helmholtz-Gemeinschaft, Am Handelshafen 12, D-27570 Bremerhaven, Germany
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179
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180
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Aqabamycins A–G: novel nitro maleimides from a marine Vibrio species: II. Structure elucidation*. J Antibiot (Tokyo) 2010; 63:303-8. [DOI: 10.1038/ja.2010.35] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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181
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Rastogi RP, Sinha RP, Singh SP, Häder DP. Photoprotective compounds from marine organisms. J Ind Microbiol Biotechnol 2010; 37:537-58. [PMID: 20401734 DOI: 10.1007/s10295-010-0718-5] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2010] [Accepted: 03/26/2010] [Indexed: 12/19/2022]
Abstract
The substantial loss in the stratospheric ozone layer and consequent increase in solar ultraviolet radiation on the earth's surface have augmented the interest in searching for natural photoprotective compounds in organisms of marine as well as freshwater ecosystems. A number of photoprotective compounds such as mycosporine-like amino acids (MAAs), scytonemin, carotenoids and several other UV-absorbing substances of unknown chemical structure have been identified from different organisms. MAAs form the most common class of UV-absorbing compounds known to occur widely in various marine organisms; however, several compounds having UV-screening properties still need to be identified. The synthesis of scytonemin, a predominant UV-A-photoprotective pigment, is exclusively reported in cyanobacteria. Carotenoids are important components of the photosynthetic apparatus that serve both light-harvesting and photoprotective functions, either by direct quenching of the singlet oxygen or other toxic reactive oxygen species or by dissipating the excess energy in the photosynthetic apparatus. The production of photoprotective compounds is affected by several environmental factors such as different wavelengths of UVR, desiccation, nutrients, salt concentration, light as well as dark period, and still there is controversy about the biosynthesis of various photoprotective compounds. Recent studies have focused on marine organisms as a source of natural bioactive molecules having a photoprotective role, their biosynthesis and commercial application. However, there is a need for extensive work to explore the photoprotective role of various UV-absorbing compounds from marine habitats so that a range of biotechnological and pharmaceutical applications can be found.
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Affiliation(s)
- Rajesh P Rastogi
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
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182
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183
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Santalova EA, Denisenko VA, Stonik VA. Dibromotyrosine and Histamine Derivatives from the Tropical Marine Sponge Aplysina sp. Nat Prod Commun 2010. [DOI: 10.1177/1934578x1000500307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Two new compounds, 3-amino-7,8-dihydroimidazo-[1,5-c]-pyrimidin-5(6H)-one (1) and ethyl 3-(2-amino-1H-imidazol-4-yl)propylcarbamate (2), along with the previously known 7,8-dihydroimidazo-[1,5-c]-pyrimidin-5(6H)-one (3), aeroplysinin-1 (4), dibromoverongiaquinol (5), bisoxazolidinone derivative (6), aerophobins-1 (7) and −2 (8), purealidins J (9) and L, have been isolated from Aplysina sp. from the South China Sea. The structures were elucidated on the basis of 1H, 13C NMR, MS and IR analyses. The histamine-derived alkaloids 1-3 may be unknown bioconversion products of purealidin J (9), aerophobin-2 (8) and aerophobin-1 (7), respectively, when 7-9 are cleaved at C-8–C-9 in reactions of activated chemical defense in Aplysina sponge.
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Affiliation(s)
- Elena A. Santalova
- Laboratory of Marine Natural Products Chemistry, Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Science, Vladivostok 690022, Prospect 100-let Vladivostoku, 159, Russia
| | - Vladimir A. Denisenko
- Laboratory of Marine Natural Products Chemistry, Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Science, Vladivostok 690022, Prospect 100-let Vladivostoku, 159, Russia
| | - Valentin A. Stonik
- Laboratory of Marine Natural Products Chemistry, Pacific Institute of Bioorganic Chemistry of the Far-Eastern Branch of the Russian Academy of Science, Vladivostok 690022, Prospect 100-let Vladivostoku, 159, Russia
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184
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Abdelmohsen UR, Pimentel-Elardo SM, Hanora A, Radwan M, Abou-El-Ela SH, Ahmed S, Hentschel U. Isolation, phylogenetic analysis and anti-infective activity screening of marine sponge-associated actinomycetes. Mar Drugs 2010; 8:399-412. [PMID: 20411105 PMCID: PMC2857355 DOI: 10.3390/md8030399] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Revised: 02/03/2010] [Accepted: 02/05/2010] [Indexed: 11/16/2022] Open
Abstract
Terrestrial actinomycetes are noteworthy producers of a multitude of antibiotics, however the marine representatives are much less studied in this regard. In this study, 90 actinomycetes were isolated from 11 different species of marine sponges that had been collected from offshore Ras Mohamed (Egypt) and from Rovinj (Croatia). Phylogenetic characterization of the isolates based on 16S rRNA gene sequencing supported their assignment to 18 different actinomycete genera representing seven different suborders. Fourteen putatively novel species were identified based on sequence similarity values below 98.2% to other strains in the NCBI database. A putative new genus related to Rubrobacter was isolated on M1 agar that had been amended with sponge extract, thus highlighting the need for innovative cultivation protocols. Testing for anti-infective activities was performed against clinically relevant, Gram-positive (Enterococcus faecalis, Staphylococcus aureus) and Gram-negative (Escherichia coli, Pseudomonas aeruginosa) bacteria, fungi (Candida albicans) and human parasites (Leishmania major, Trypanosoma brucei). Bioactivities against these pathogens were documented for 10 actinomycete isolates. These results show a high diversity of actinomycetes associated with marine sponges as well as highlight their potential to produce anti-infective agents.
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Affiliation(s)
- Usama Ramadan Abdelmohsen
- Julius-von-Sachs-Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, 97082 Würzburg, Germany; E-Mail:
(S.M.P.-E.);
(U.R.A.)
- Research Center for Infectious Diseases, Josef-Schneider-Straße 2, 97080 Würzburg, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Sheila M. Pimentel-Elardo
- Julius-von-Sachs-Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, 97082 Würzburg, Germany; E-Mail:
(S.M.P.-E.);
(U.R.A.)
- Research Center for Infectious Diseases, Josef-Schneider-Straße 2, 97080 Würzburg, Germany
| | - Amro Hanora
- Department of Microbiology, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt; E-Mail:
| | - Mona Radwan
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt; E-Mails:
(M.R.);
(S.H.A.-E.-E.)
| | - Soad H. Abou-El-Ela
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt; E-Mails:
(M.R.);
(S.H.A.-E.-E.)
| | - Safwat Ahmed
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia, Egypt; E-Mail:
| | - Ute Hentschel
- Julius-von-Sachs-Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, 97082 Würzburg, Germany; E-Mail:
(S.M.P.-E.);
(U.R.A.)
- Research Center for Infectious Diseases, Josef-Schneider-Straße 2, 97080 Würzburg, Germany
- *Author to whom correspondence should be addressed; E-Mail:
; Tel.: 0049-931-31-82581; Fax: 0049-931-31-86235
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185
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Methods for isolation of marine-derived endophytic fungi and their bioactive secondary products. Nat Protoc 2010; 5:479-90. [PMID: 20203665 DOI: 10.1038/nprot.2009.233] [Citation(s) in RCA: 246] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Marine-derived fungi have been shown in recent years to produce a plethora of new bioactive secondary metabolites, some of them featuring new carbon frameworks hitherto unprecedented in nature. These compounds are of interest as new lead structures for medicine as well as for plant protection. The aim of this protocol is to give a detailed description of methods useful for the isolation and cultivation of fungi associated with various marine organisms (sponges, algae and mangrove plants) for the extraction, characterization and structure elucidation of biologically active secondary metabolites produced by these marine-derived endophytic fungi, and for the preliminary evaluation of their pharmacological properties based on rapid 'in house' screening systems. Some results exemplifying the positive outcomes of the protocol are given at the end. From sampling in marine environment to completion of the structure elucidation and bioactivity screening, a period of at least 3 months has to be scheduled.
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186
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Paradas WC, Salgado LT, Sudatti DB, Crapez MA, Fujii MT, Coutinho R, Pereira RC, Amado Filho GM. Induction of halogenated vesicle transport in cells of the red seaweed Laurencia obtusa. BIOFOULING 2010; 26:277-286. [PMID: 20077237 DOI: 10.1080/08927010903515122] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In clones of the red alga Laurencia obtusa, the frequency of vesicle transport from corps en cerise (CC) to the cell wall region was evaluated in response to differences in temperature, irradiance, desiccation, bacterial fouling, and bromine (Br) availability. In addition, the morphology of the corps en cerise was analyzed. Traffic of vesicles was induced by exposing L. obtusa to low temperatures and variations in irradiance. It was also verified that bacterial fouling induced vesicle traffic. Under high temperatures and desiccation, the membranous tubular connections were lost and transport of vesicles was not seen. The morphology of the corps en cerise varied according to the availability of Br in seawater. Exocytosis of secondary metabolites by L. obtusa was shown to vary in relation to temperature, irradiance, desiccation and bacterial fouling. The data suggest that the transport of vesicles in L. obtusa may be related to the inhibition of the microfouling community on the algal surface.
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Affiliation(s)
- Wladimir C Paradas
- Departamento de Biologia Marinha, Universidade Federal Fluminense, Niteroi, Brasil
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187
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Lane AL, Mular L, Drenkard EJ, Shearer TL, Engel S, Fredericq S, Fairchild CR, Prudhomme J, Le Roch K, Hay ME, Aalbersberg W, Kubanek J. Ecological leads for natural product discovery: Novel sesquiterpene hydroquinones from the red macroalga Peyssonnelia sp. Tetrahedron 2010; 66:455-461. [PMID: 20661312 DOI: 10.1016/j.tet.2009.11.042] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Pharmacologically-motivated marine natural product investigations have yielded a large variety of structurally unique compounds with interesting biomedical properties, but the natural roles of these molecules often remain unknown. While secondary metabolites may function as antimicrobial chemical defenses, few studies have examined this hypothesis. In the present investigation, chromatographic fractions from 69 collections of Fijian red macroalgae representing at least 43 species were evaluated for growth inhibition of three microbial pathogens and saprophytes of marine macrophytes. At least one microbe was suppressed by fraction(s) of all evaluated algae, suggesting that antimicrobial defenses are common among tropical seaweeds. From these leads, peyssonoic acids A-B (1-2), novel sesquiterpene hydroquinones, were isolated from the crustose red alga Peyssonnelia sp. At ecologically realistic concentrations, both compounds inhibited growth of Pseudoalteromonas bacteriolytica, a bacterial pathogen of marine algae, and Lindra thalassiae, a fungal pathogen of marine algae, and exhibited modest antineoplastic activity against ovarian cancer cells. The peyssonoic acids included one novel carbon skeleton and illustrated the utility of ecological studies in natural product discovery.
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Affiliation(s)
- Amy L Lane
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA
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188
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Manzo E, Ciavatta M, Gavagnin M, Villani G, Quaranta C, D'Souza L, Cimino G. A new xenicane norditerpene from the Indian marine gorgonianAcanthogorgia turgida. Nat Prod Res 2009; 23:1664-70. [DOI: 10.1080/14786410802144941] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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189
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Lo KL, Khalil A, Kuo YH, Shen YC. Sinuladiterpenes AâF, New Cembrane Diterpenes from Sinularia flexibilis. Chem Biodivers 2009; 6:2227-35. [DOI: 10.1002/cbdv.200800298] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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190
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Popplewell WL, Northcote PT. Colensolide A: a new nitrogenous bromophenol from the New Zealand marine red alga Osmundaria colensoi. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.118] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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191
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Huang HC, Chao CH, Kuo YH, Sheu JH. Crassocolides G-M, cembranoids from the Formosan soft coral Sarcophyton crassocaule. Chem Biodivers 2009; 6:1232-42. [PMID: 19697342 DOI: 10.1002/cbdv.200800142] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Seven new polyoxygenated cembranoids possessing an alpha-methylene-gamma-lactone group, crassocolides G-M (1-7, resp.), have been isolated from the AcOEt extract of the Formosan soft coral Sarcophyton crassocaule. The structures of compounds 1-7 were established by detailed spectroscopic analyses, including 2D-NMR spectroscopy ((1)H,(1)H-COSY, HMQC, HMBC, and NOESY), while the absolute configuration of 1 was determined using a modified reaction of Mosher's method. The cytotoxicity of compounds 1-7 against a limited panel of cancer cell lines was also determined.
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Affiliation(s)
- Ho-Cheng Huang
- Department of Chemical and Materials Engineering, Cheng Shiu University, Kaohsiung, Taiwan
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192
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Gerçe B, Schwartz T, Voigt M, Rühle S, Kirchen S, Putz A, Proksch P, Obst U, Syldatk C, Hausmann R. Morphological, bacterial, and secondary metabolite changes of Aplysina aerophoba upon long-term maintenance under artificial conditions. MICROBIAL ECOLOGY 2009; 58:865-878. [PMID: 19588186 DOI: 10.1007/s00248-009-9560-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Accepted: 06/19/2009] [Indexed: 05/28/2023]
Abstract
The aim of this study was to analyze successional changes in the bacterial community over a period of 6 months of cultivation of Aplysina aerophoba sponges under different artificial cultivation conditions by use of denaturing gradient gel electrophoresis (DGGE). The cultivation conditions varied concerning the water temperature (20 +/- 2 degrees C and 25 +/- 2 degrees C) of the aquaria, additional illumination of one aquarium, and feeding of the sponges. Amplicons from DGGE separation of dominant colonizing or variably appearing bacteria were sequenced and aligned for taxonomical identification. In addition, secondary metabolites typically found in A. aerophoba were analyzed to investigate changes in the natural product profile during cultivation. The cultivation of sponges under any given condition did not lead to a depletion of their bacterial community in the course of the experiment. On the contrary, the distinctive set of associated bacteria was maintained in spite of a dramatic loss of biomass and morphological degradation during the cultivation period. Generally, all sequences obtained from the DGGE gels were related to bacteria of five phyla: Actinobacteria, Cyanobacteria, alpha-Proteobacteria, gamma-Proteobacteria, and Chloroflexi. Despite the overall stability of the bacterial community in A. aerophoba, an unambiguous variability was detected for the Cyanobacteria "A. aerophoba clone TK09". This variability was ascribed to the predominant light conditions. The analysis of the metabolic pattern revealed that the concentration of a class of characteristic-brominated compounds typically found in A. aerophoba, like aeroplysinin-1, aerophobin-1, aerophobin-2, and isofistularin-3, increased over the 6 months of cultivation.
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Affiliation(s)
- Berna Gerçe
- Institute of Engineering in Life Sciences, Area II: Technical Biology, University of Karlsruhe (TH), Engler-Bunte-Ring 1, Karlsruhe, 76131, Germany.
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193
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Shen YC, Shih PS, Lin YS, Lin YC, Kuo YH, Kuo YC, Khalil A. Irciformonins E - K, C22-Trinorsesterterpenoids from the SpongeIrcinia formosana. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200900120] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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194
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Šíša M, Pla D, Altuna M, Francesch A, Cuevas C, Albericio F, Álvarez M. Total Synthesis and Antiproliferative Activity Screening of (±)-Aplicyanins A, B and E and Related Analogues. J Med Chem 2009; 52:6217-23. [DOI: 10.1021/jm900544z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Miroslav Šíša
- Institute for Research in Biomedicine, Barcelona Science Park—University of Barcelona, Baldiri Reixac 10, E-08028 Barcelona, Spain
| | - Daniel Pla
- Institute for Research in Biomedicine, Barcelona Science Park—University of Barcelona, Baldiri Reixac 10, E-08028 Barcelona, Spain
- CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Baldiri Reixac 10, E-08028 Barcelona, Spain
| | - Marta Altuna
- Institute for Research in Biomedicine, Barcelona Science Park—University of Barcelona, Baldiri Reixac 10, E-08028 Barcelona, Spain
| | - Andrés Francesch
- Pharma Mar S.A., Avenida de los Reyes 1, E-28770 Colmenar Viejo, Madrid, Spain
| | - Carmen Cuevas
- Pharma Mar S.A., Avenida de los Reyes 1, E-28770 Colmenar Viejo, Madrid, Spain
| | - Fernando Albericio
- Institute for Research in Biomedicine, Barcelona Science Park—University of Barcelona, Baldiri Reixac 10, E-08028 Barcelona, Spain
- CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Baldiri Reixac 10, E-08028 Barcelona, Spain
| | - Mercedes Álvarez
- Institute for Research in Biomedicine, Barcelona Science Park—University of Barcelona, Baldiri Reixac 10, E-08028 Barcelona, Spain
- CIBER-BBN Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Baldiri Reixac 10, E-08028 Barcelona, Spain
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195
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Corminboeuf O, Overman LE, Pennington LD. A unified strategy for enantioselective total synthesis of cladiellin and briarellin diterpenes: total synthesis of briarellins E and F and the putative structure of alcyonin and revision of its structure assignment. J Org Chem 2009; 74:5458-70. [PMID: 19534538 PMCID: PMC2744073 DOI: 10.1021/jo9010156] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Enantioselective total syntheses of briarellin E (12) and briarellin F (13), as well as the structure originally proposed for the cladiellin diterpene alcyonin (10), have been realized. Comparison of the spectral data for synthetic 10, natural alcyonin, cladiellisin (33), and cladiellaperoxide (34), as well as chemical transformations of 10 and natural alcyonin, suggest that the structure of this coral metabolite is allylic peroxide 11. The unified approach detailed herein can be used to access both C4-deoxygenated and C4-oxygenated cladiellins and briarellins. The central step in these syntheses is acid-promoted condensation of (Z)-alpha,beta-unsaturated aldehydes 17 with cyclohexadienyl diols 18 to form intermediates 16 incorporating the hexahydroisobenzofuran core and five stereocenters of these marine diterpenes (Scheme 1 ).
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Affiliation(s)
| | - Larry E. Overman
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025
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Zhang W, Zhang F, Li Z, Miao X, Meng Q, Zhang X. Investigation of bacteria with polyketide synthase genes and antimicrobial activity isolated from South China Sea sponges. J Appl Microbiol 2009; 107:567-75. [DOI: 10.1111/j.1365-2672.2009.04241.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Baker PW, Kennedy J, Dobson ADW, Marchesi JR. Phylogenetic diversity and antimicrobial activities of fungi associated with Haliclona simulans isolated from Irish coastal waters. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2009; 11:540-547. [PMID: 19083060 DOI: 10.1007/s10126-008-9169-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2008] [Accepted: 11/26/2008] [Indexed: 05/27/2023]
Abstract
The diversity and antimicrobial activities of 80 fungi isolated from Haliclona simulans were assessed using different fungal media containing either agar or gellum gum. In total, 19 different genotypes were detected. These fungal isolates could be classified as members of the Agaricomycotina, Mucoromycotina, Saccharomycotina, and Pezizomycotina, although the majority of the isolates were associated with the latter class. Some of these fungal isolates showed antimicrobial inhibition of Escherichia coli, Bacillus sp., Staphylococcus aureus, and Candida glabrata. Fungal 18S rRNA gene sequences belonging to Eurotiales, Calosphaeriales, and Chaetothyriales were amplified from DNA and RNA extracted from this marine sponge. This study indicates that in contrast to the low diversity of fungi detected by polymerase chain reaction (PCR) and reverse transcription (RT)-PCR amplification from extracts of this marine sponge, a much higher diversity of fungi could be cultured. The data suggests that some fungi live in symbiosis with H. simulans, whereas other fungi may have been ingested from the surrounding seawater.
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Affiliation(s)
- Paul W Baker
- Environmental Research Institute, University College Cork, Cork, Ireland
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199
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Antimicrobial potential and seasonality of red algae collected from the southwest coast of India tested against shrimp, human and phytopathogens. ANN MICROBIOL 2009. [DOI: 10.1007/bf03178319] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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200
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Quévrain E, Domart-Coulon I, Pernice M, Bourguet-Kondracki ML. Novel natural parabens produced by aMicrobulbiferbacterium in its calcareous sponge hostLeuconia nivea. Environ Microbiol 2009; 11:1527-39. [DOI: 10.1111/j.1462-2920.2009.01880.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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