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Dashti Y, Errington J. Chemistry and biology of specialized metabolites produced by Actinomadura. Nat Prod Rep 2024; 41:370-401. [PMID: 38099919 PMCID: PMC10951976 DOI: 10.1039/d3np00047h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Indexed: 03/21/2024]
Abstract
Covering: up to the end of 2022In recent years rare Actinobacteria have become increasingly recognised as a rich source of novel bioactive metabolites. Actinomadura are Gram-positive bacteria that occupy a wide range of ecological niches. This review highlights about 230 secondary metabolites produced by Actinomadura spp., reported until the end of 2022, including their bioactivities and selected biosynthetic pathways. Notably, the bioactive compounds produced by Actinomadura spp. demonstrate a wide range of activities, including antimicrobial, antitumor and anticoccidial effects, highlighting their potential in various fields.
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Affiliation(s)
- Yousef Dashti
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2015, Australia.
| | - Jeff Errington
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2015, Australia.
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2
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Gao P, Khong HY, Mao W, Chen X, Bao L, Wen X, Xu Y. Tunicates as Sources of High-Quality Nutrients and Bioactive Compounds for Food/Feed and Pharmaceutical Applications: A Review. Foods 2023; 12:3684. [PMID: 37835337 PMCID: PMC10572860 DOI: 10.3390/foods12193684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/02/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023] Open
Abstract
Tunicates are widely distributed worldwide and are recognized as abundant marine bioresources with many potential applications. In this review, state-of-the-art studies on chemical composition analyses of various tunicate species were summarized; these studies confirmed that tunicates contain nutrients similar to fish (such as abundant cellulose, protein, and ω-3 fatty acid (FA)-rich lipids), indicating their practical and feasible uses for food or animal feed exploration. However, the presence of certain toxic elements should be evaluated in terms of safety. Moreover, recent studies on bioactive substances extracted from tunicates (such as toxins, sphingomyelins, and tunichromes) were analyzed, and their biological properties were comprehensively reviewed, including antimicrobial, anticancer, antioxidant, antidiabetic, and anti-inflammatory activities. In addition, some insights and prospects for the future exploration of tunicates are provided which are expected to guide their further application in the food, animal feed, and pharmaceutical industries. This review is critical to providing a new pathway for converting the common pollution issues of hydroponic nutrients into valuable marine bioresources.
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Affiliation(s)
- Pingping Gao
- Faculty of Applied Sciences, Universiti Teknologi MARA, Sarawak Branch, Kota Samarahan 94300, Malaysia
| | - Heng Yen Khong
- Faculty of Applied Sciences, Universiti Teknologi MARA, Sarawak Branch, Kota Samarahan 94300, Malaysia
| | - Wenhui Mao
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China (Y.X.)
| | - Xiaoyun Chen
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China (Y.X.)
| | - Lingxiang Bao
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China (Y.X.)
| | - Xinru Wen
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China (Y.X.)
| | - Yan Xu
- School of Food and Pharmacy, Zhejiang Ocean University, Zhoushan 316022, China (Y.X.)
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3
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Gribble GW. Naturally Occurring Organohalogen Compounds-A Comprehensive Review. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2023; 121:1-546. [PMID: 37488466 DOI: 10.1007/978-3-031-26629-4_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Abstract
The present volume is the third in a trilogy that documents naturally occurring organohalogen compounds, bringing the total number-from fewer than 25 in 1968-to approximately 8000 compounds to date. Nearly all of these natural products contain chlorine or bromine, with a few containing iodine and, fewer still, fluorine. Produced by ubiquitous marine (algae, sponges, corals, bryozoa, nudibranchs, fungi, bacteria) and terrestrial organisms (plants, fungi, bacteria, insects, higher animals) and universal abiotic processes (volcanos, forest fires, geothermal events), organohalogens pervade the global ecosystem. Newly identified extraterrestrial sources are also documented. In addition to chemical structures, biological activity, biohalogenation, biodegradation, natural function, and future outlook are presented.
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Affiliation(s)
- Gordon W Gribble
- Department of Chemistry, Dartmouth College, Hanover, NH, 03755, USA.
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4
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Pramod Charpe V, Gupta M, Chu Hwang K. Visible-Light-Induced Oxidative α-keto-Dichlorination of Arylalkynes by CuCl 2 at Room Temperature. CHEMSUSCHEM 2022; 15:e202200957. [PMID: 35730105 DOI: 10.1002/cssc.202200957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/21/2022] [Indexed: 06/15/2023]
Abstract
A visible light-induced oxidative α-keto-dichlorination of terminal and internal aryl alkynes was developed to form dichloroacetophenones (DCAPs) and dichlorophenyl-acetophenones (DCPAPs), respectively, by using CuCl2 as a photoredox catalyst in the presence of air at room temperature (without using any exogenous photocatalyst). Here, photoexcited CuCl2 underwent ligand-to-metal charge transfer to generate a Cl radical, which readily added to the alkynes to form DCAPs or DCPAPs in the presence of O2 . This α-keto-dichlorination reaction is a green and mild protocol as it produced water as the only by-product. Moreover, the evaluation of green chemistry metrics indicated that the E-factor (mass of wastes/mass of products) of the current α-keto-chlorination method is around 10.1 times lower than that of a literature-reported photochemical method. The Eco Scale value (score 55, which on a scale of 0-100 indicates an acceptable synthesis) signifies that this process is simple, highly efficient, eco-friendly, and cost-effective.
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Affiliation(s)
| | - Mahima Gupta
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, R. O. C
| | - Kuo Chu Hwang
- Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan, R. O. C
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5
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Chen J, Xu L, Zhou Y, Han B. Natural Products from Actinomycetes Associated with Marine Organisms. Mar Drugs 2021; 19:md19110629. [PMID: 34822500 PMCID: PMC8621598 DOI: 10.3390/md19110629] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/05/2021] [Accepted: 11/06/2021] [Indexed: 12/15/2022] Open
Abstract
The actinomycetes have proven to be a rich source of bioactive secondary metabolites and play a critical role in the development of pharmaceutical researches. With interactions of host organisms and having special ecological status, the actinomycetes associated with marine animals, marine plants, macroalgae, cyanobacteria, and lichens have more potential to produce active metabolites acting as chemical defenses to protect the host from predators as well as microbial infection. This review focuses on 536 secondary metabolites (SMs) from actinomycetes associated with these marine organisms covering the literature to mid-2021, which will highlight the taxonomic diversity of actinomycetes and the structural classes, biological activities of SMs. Among all the actinomycetes listed, members of Streptomyces (68%), Micromonospora (6%), and Nocardiopsis (3%) are dominant producers of secondary metabolites. Additionally, alkaloids (37%), polyketides (33%), and peptides (15%) comprise the largest proportion of natural products with mostly antimicrobial activity and cytotoxicity. Furthermore, the data analysis and clinical information of SMs have been summarized in this article, suggesting that some of these actinomycetes with multiple host organisms deserve more attention to their special ecological status and genetic factors.
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Wang C, Du W, Lu H, Lan J, Liang K, Cao S. A Review: Halogenated Compounds from Marine Actinomycetes. Molecules 2021; 26:2754. [PMID: 34067123 PMCID: PMC8125187 DOI: 10.3390/molecules26092754] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 05/02/2021] [Accepted: 05/03/2021] [Indexed: 11/17/2022] Open
Abstract
Marine actinomycetes, Streptomyces species, produce a variety of halogenated compounds with diverse structures and a range of biological activities owing to their unique metabolic pathways. These halogenated compounds could be classified as polyketides, alkaloids (nitrogen-containing compounds) and terpenoids. Halogenated compounds from marine actinomycetes possess important biological properties such as antibacterial and anticancer activities. This review reports the sources, chemical structures and biological activities of 127 new halogenated compounds originated mainly from Streptomyces reported from 1992 to 2020.
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Affiliation(s)
- Cong Wang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, Hilo, HI 96720, USA
| | - Weisheng Du
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
| | - Huanyun Lu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
| | - Jianzhou Lan
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
| | - Kailin Liang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi University for Nationalities, Nanning 530006, China; (W.D.); (H.L.); (J.L.); (K.L.)
| | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, Hilo, HI 96720, USA
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7
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Chen L, Liu C, Liu X, Wang GY. Phylogenetic analysis and screening of antimicrobial and cytotoxic activities of culturable bacteria associated with the ascidian Botryllus schlosseri. J Appl Microbiol 2020; 129:892-905. [PMID: 32311814 DOI: 10.1111/jam.14667] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/25/2020] [Accepted: 04/12/2020] [Indexed: 11/26/2022]
Abstract
AIMS Isolating culturable bacteria associated with ascidian (Botryllus schlosseri) and investigating their bioactivities to discover new marine microbial resources with potential to produce novel bioactive natural products. METHODS AND RESULTS A total of 357 bacteria were isolated from the ascidian B. schlosseri from the coast of Weihai in the north Yellow Sea, China. Of these, 203 isolates were identified by 16S rRNA gene sequencing and they belonged to 52 genera from 30 families in five phyla. The antimicrobial activities and cytotoxic activities of all isolates were determined. Of the 357 isolates, 135 isolates demonstrated antimicrobial activities, and the crude extracts of five isolates showed strong cytotoxicity against human hepatocellular carcinoma Bel 7402 or human cervical carcinoma HeLa cells. CONCLUSIONS Our study revealed the diversity of bacteria associated with the ascidian B. schlosseri and reported a broad spectrum of antimicrobial and cytotoxic activities displayed by these isolates. SIGNIFICANCE AND IMPACT OF THE STUDY Our results suggest that the culturable bacteria associated with the ascidian B. schlosseri may be a potential source for novel bioactive compounds.
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Affiliation(s)
- L Chen
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology, Weihai, China
| | - C Liu
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology, Weihai, China
| | - X Liu
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology, Weihai, China
| | - G-Y Wang
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology, Weihai, China
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8
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Venkatesan M, Arumugam V, Ayyasamy R, Murugesan S, Saravanan N, Sundaresan U, Ramachandran S, Manivasagam T, Thenmozhi AJ, Qoronfleh MW. Bioactive Metabolites from Marine Ascidians: Future Treatment for Autism Spectrum Disorder. ADVANCES IN NEUROBIOLOGY 2020; 24:661-678. [PMID: 32006379 DOI: 10.1007/978-3-030-30402-7_25] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Autism spectrum disorder (ASD) is a developmental disorder that influences communication and behavior. Numerous researches propose that genes can act together with manipulations from the environment to affect development in ways that lead to ASD. The broad range of issues facing people with ASD means that there is no single proper drug and treatment for ASD. Numerous shortcomings associated with the present conventional therapeutic strategies have forced researchers to venture into alternative natural sources for effective compounds. The marine environment has emerged as an alternate search environment due to its versatile conditions where organisms employ various biodefense mechanisms for their survival. Ascidians are an excellent source for unique bioactive compounds with nutritive and therapeutic content and it still holds credit for being an underused source from marine animals. Bioactive compounds isolated from ascidians have various commendable biomedical applications due to their unique chemical structures. The present chapter will focus on the potential of bioactive compounds derived from ascidians for the treatment of the neurologic disorder-ASD.
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Affiliation(s)
- Manigandan Venkatesan
- Department of Medical Biotechnology, Chettinad Academy of Research and Education, Chennai, Tamil Nadu, India
| | - Velusamy Arumugam
- Department of Environmental Biotechnology, School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India.
| | - Rathinam Ayyasamy
- Department of Animal Science, Centre for Pheromone Technology, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Selvakumar Murugesan
- Department of Biotechnology, Anna University, Tiruchirappalli, Tamil Nadu, India
| | - Nishakavya Saravanan
- Department of Medical Biotechnology, Chettinad Academy of Research and Education, Chennai, Tamil Nadu, India
| | - Umamaheswari Sundaresan
- Department of Environmental Biotechnology, School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - Saravanan Ramachandran
- Department of Medical Biotechnology, Chettinad Academy of Research and Education, Chennai, Tamil Nadu, India
| | - Thamilarasan Manivasagam
- Department of Biochemistry and Biotechnology, Annamalai University, Chidambaram, Tamil Nadu, India
| | | | - M Walid Qoronfleh
- Research & Policy Department, World Innovation Summit for Health (WISH), Qatar Foundation, Doha, Qatar
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9
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Zhang F, Braun DR, Chanana S, Rajski SR, Bugni TS. Phallusialides A-E, Pyrrole-Derived Alkaloids Discovered from a Marine-Derived Micromonospora sp. Bacterium Using MS-Based Metabolomics Approaches. JOURNAL OF NATURAL PRODUCTS 2019; 82:3432-3439. [PMID: 31794218 PMCID: PMC7784719 DOI: 10.1021/acs.jnatprod.9b00808] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Integrating MS-based metabolomics approaches, LC-MS-PCA and molecular networking enabled the targeted isolation of five new pyrrole-derived alkaloids, phallusialides A-E (1-5), from a marine-derived Micromonospora sp. bacterium. The structures of 1-5 were elucidated by analysis of their HRMS, MS/MS, and NMR spectroscopic data. The absolute configuration of phallusialide A (1) was determined on the basis of comparisons of experimental and theoretically calculated ECD spectra. Compounds 1 and 2 exhibited antibacterial activity against methicillin resistant S. aureus (MRSA) and E. coli, with MIC values of 32 and 64 μg/mL, respectively, whereas 3-5 showed no antibacterial activity even at 256 μg/mL, yielding important SAR insights for this class of compounds.
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Affiliation(s)
- Fan Zhang
- Pharmaceutical Sciences Division, University of Wisconsin–Madison, Madison, Wisconsin 53705, United States
| | - Doug R. Braun
- Pharmaceutical Sciences Division, University of Wisconsin–Madison, Madison, Wisconsin 53705, United States
| | - Shaurya Chanana
- Pharmaceutical Sciences Division, University of Wisconsin–Madison, Madison, Wisconsin 53705, United States
| | - Scott R. Rajski
- Pharmaceutical Sciences Division, University of Wisconsin–Madison, Madison, Wisconsin 53705, United States
| | - Tim S. Bugni
- Pharmaceutical Sciences Division, University of Wisconsin–Madison, Madison, Wisconsin 53705, United States
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10
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Dou X, Dong B. Origins and Bioactivities of Natural Compounds Derived from Marine Ascidians and Their Symbionts. Mar Drugs 2019; 17:md17120670. [PMID: 31795141 PMCID: PMC6950356 DOI: 10.3390/md17120670] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 11/25/2019] [Accepted: 11/25/2019] [Indexed: 02/07/2023] Open
Abstract
Marine ascidians are becoming important drug sources that provide abundant secondary metabolites with novel structures and high bioactivities. As one of the most chemically prolific marine animals, more than 1200 inspirational natural products, such as alkaloids, peptides, and polyketides, with intricate and novel chemical structures have been identified from ascidians. Some of them have been successfully developed as lead compounds or highly efficient drugs. Although numerous compounds that exist in ascidians have been structurally and functionally identified, their origins are not clear. Interestingly, growing evidence has shown that these natural products not only come from ascidians, but they also originate from symbiotic microbes. This review classifies the identified natural products from ascidians and the associated symbionts. Then, we discuss the diversity of ascidian symbiotic microbe communities, which synthesize diverse natural products that are beneficial for the hosts. Identification of the complex interactions between the symbiont and the host is a useful approach to discovering ways that direct the biosynthesis of novel bioactive compounds with pharmaceutical potentials.
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Affiliation(s)
- Xiaoju Dou
- Laboratory of Morphogenesis & Evolution, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;
- College of Agricultural Science and Technology, Tibet Vocational Technical College, Lhasa 850030, China
| | - Bo Dong
- Laboratory of Morphogenesis & Evolution, College of Marine Life Sciences, Ocean University of China, Qingdao 266003, China;
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao 266003, China
- Correspondence: ; Tel.: +86-0532-82032732
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11
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Yan JX, Chevrette MG, Braun DR, Harper MK, Currie CR, Bugni TS. Madurastatin D1 and D2, Oxazoline Containing Siderophores Isolated from an Actinomadura sp.. Org Lett 2019; 21:6275-6279. [PMID: 31380646 PMCID: PMC6941472 DOI: 10.1021/acs.orglett.9b02159] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two new siderophores, madurastatin D1 and D2, together with (-)-madurastatin C1, the enantiomer of a known compound, were isolated from marine-derived Actinomadura sp. The presence of an unusual 4-imidazolidinone ring in madurastatins D1 and D2 inspired us to sequence the Actinomadura sp. genome and to identify the mad biosynthetic gene cluster, knowledge of which enables us to now propose a biosynthetic pathway. Madurastatin D1 and D2 are moderately active in antimicrobial assays with M. luteus.
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Affiliation(s)
- Jia-Xuan Yan
- Pharmaceutical Sciences Division, University of Wisconsin-Madison, 777 Highland Ave, Madison, WI, 53705, USA
| | - Marc G. Chevrette
- Department of Genetics, University of Wisconsin-Madison, 425 G Henry Mall, Madison, WI, 53706, USA
- Department of Bacteriology, University of Wisconsin-Madison, 1550 Linden Ave, Madison, WI, 53706, USA
| | - Doug R. Braun
- Pharmaceutical Sciences Division, University of Wisconsin-Madison, 777 Highland Ave, Madison, WI, 53705, USA
| | - Mary Kay Harper
- Department of Medicinal Chemistry, University of Utah, 30 South 2000 East, Salt Lake City, UT, 84112, USA
| | - Cameron R. Currie
- Department of Bacteriology, University of Wisconsin-Madison, 1550 Linden Ave, Madison, WI, 53706, USA
| | - Tim S. Bugni
- Pharmaceutical Sciences Division, University of Wisconsin-Madison, 777 Highland Ave, Madison, WI, 53705, USA
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12
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Subramani R, Sipkema D. Marine Rare Actinomycetes: A Promising Source of Structurally Diverse and Unique Novel Natural Products. Mar Drugs 2019; 17:E249. [PMID: 31035452 PMCID: PMC6562664 DOI: 10.3390/md17050249] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/18/2019] [Accepted: 04/23/2019] [Indexed: 12/18/2022] Open
Abstract
Rare actinomycetes are prolific in the marine environment; however, knowledge about their diversity, distribution and biochemistry is limited. Marine rare actinomycetes represent a rather untapped source of chemically diverse secondary metabolites and novel bioactive compounds. In this review, we aim to summarize the present knowledge on the isolation, diversity, distribution and natural product discovery of marine rare actinomycetes reported from mid-2013 to 2017. A total of 97 new species, representing 9 novel genera and belonging to 27 families of marine rare actinomycetes have been reported, with the highest numbers of novel isolates from the families Pseudonocardiaceae, Demequinaceae, Micromonosporaceae and Nocardioidaceae. Additionally, this study reviewed 167 new bioactive compounds produced by 58 different rare actinomycete species representing 24 genera. Most of the compounds produced by the marine rare actinomycetes present antibacterial, antifungal, antiparasitic, anticancer or antimalarial activities. The highest numbers of natural products were derived from the genera Nocardiopsis, Micromonospora, Salinispora and Pseudonocardia. Members of the genus Micromonospora were revealed to be the richest source of chemically diverse and unique bioactive natural products.
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Affiliation(s)
- Ramesh Subramani
- School of Biological and Chemical Sciences, Faculty of Science, Technology & Environment, The University of the South Pacific, Laucala Campus, Private Mail Bag, Suva, Republic of Fiji.
| | - Detmer Sipkema
- Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, 6708 WE Wageningen, The Netherlands.
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13
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Li Y, Mou T, Lu L, Jiang X. Visible-light-promoted oxidative halogenation of alkynes. Chem Commun (Camb) 2019; 55:14299-14302. [DOI: 10.1039/c9cc07655g] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In nature, halogenation promotes the biological activity of secondary metabolites, especially geminal dihalogenation.
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Affiliation(s)
- Yiming Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Process
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Tao Mou
- Shanghai Key Laboratory of Green Chemistry and Chemical Process
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Lingling Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Process
- East China Normal University
- Shanghai 200062
- P. R. China
| | - Xuefeng Jiang
- Shanghai Key Laboratory of Green Chemistry and Chemical Process
- East China Normal University
- Shanghai 200062
- P. R. China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences
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14
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Chen L, Hu JS, Xu JL, Shao CL, Wang GY. Biological and Chemical Diversity of Ascidian-Associated Microorganisms. Mar Drugs 2018; 16:md16100362. [PMID: 30275404 PMCID: PMC6212887 DOI: 10.3390/md16100362] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 09/23/2018] [Accepted: 09/27/2018] [Indexed: 11/16/2022] Open
Abstract
Ascidians are a class of sessile filter-feeding invertebrates, that provide unique and fertile niches harboring various microorganisms, such as bacteria, actinobacteria, cyanobacteria and fungi. Over 1000 natural products, including alkaloids, cyclic peptides, and polyketides, have been isolated from them, which display diverse properties, such as antibacterial, antifungal, antitumor, and anti-inflammatory activities. Strikingly, direct evidence has confirmed that ~8% of natural products from ascidians are actually produced by symbiotic microorganisms. In this review, we present 150 natural products from microorganisms associated with ascidians that have been reported up to 2017.
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Affiliation(s)
- Lei Chen
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
| | - Jin-Shuang Hu
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
| | - Jia-Lei Xu
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
| | - Chang-Lun Shao
- Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.
| | - Guang-Yu Wang
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China.
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15
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Mascuch SJ, Boudreau PD, Carland TM, Pierce NT, Olson J, Hensler ME, Choi H, Campanale J, Hamdoun A, Nizet V, Gerwick WH, Gaasterland T, Gerwick L. Marine Natural Product Honaucin A Attenuates Inflammation by Activating the Nrf2-ARE Pathway. JOURNAL OF NATURAL PRODUCTS 2018; 81:506-514. [PMID: 29215273 PMCID: PMC6553616 DOI: 10.1021/acs.jnatprod.7b00734] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The cyanobacterial marine natural product honaucin A inhibits mammalian innate inflammation in vitro and in vivo. To decipher its mechanism of action, RNA sequencing was used to evaluate differences in gene expression of cultured macrophages following honaucin A treatment. This analysis led to the hypothesis that honaucin A exerts its anti-inflammatory activity through activation of the cytoprotective nuclear erythroid 2-related factor 2 (Nrf2)-antioxidant response element/electrophile response element (ARE/EpRE) signaling pathway. Activation of this pathway by honaucin A in cultured human MCF7 cells was confirmed using an Nrf2 luciferase reporter assay. In vitro alkylation experiments with the natural product and N-acetyl-l-cysteine suggest that honaucin A activates this pathway through covalent interaction with the sulfhydryl residues of the cytosolic repressor protein Keap1. Honaucin A presents a potential therapeutic lead for diseases with an inflammatory component modulated by Nrf2-ARE.
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Affiliation(s)
- Samantha J. Mascuch
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
| | - Paul D. Boudreau
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
| | | | - N. Tessa Pierce
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
| | - Joshua Olson
- Department of Pediatrics, School of Medicine, and University of California, San Diego, La Jolla, California 92093, United States University of California, San Diego, La Jolla, California 92093, United States
| | - Mary E. Hensler
- Department of Pediatrics, School of Medicine, and University of California, San Diego, La Jolla, California 92093, United States University of California, San Diego, La Jolla, California 92093, United States
| | - Hyukjae Choi
- College of Pharmacy, Yeungnam University, Gyeongsan 38541, Republic of Korea
| | - Joseph Campanale
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
| | - Amro Hamdoun
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
| | - Victor Nizet
- Department of Pediatrics, School of Medicine, and University of California, San Diego, La Jolla, California 92093, United States University of California, San Diego, La Jolla, California 92093, United States
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, United States
| | - William H. Gerwick
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, United States
| | - Teresa Gaasterland
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
| | - Lena Gerwick
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, United States
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16
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Wyche TP, Ramos Alvarenga RF, Piotrowski JS, Duster MN, Warrack SR, Cornilescu G, De Wolfe TJ, Hou Y, Braun DR, Ellis GA, Simpkins SW, Nelson J, Myers CL, Steele J, Mori H, Safdar N, Markley JL, Rajski SR, Bugni TS. Chemical Genomics, Structure Elucidation, and in Vivo Studies of the Marine-Derived Anticlostridial Ecteinamycin. ACS Chem Biol 2017; 12:2287-2295. [PMID: 28708379 PMCID: PMC5697710 DOI: 10.1021/acschembio.7b00388] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A polyether antibiotic, ecteinamycin (1), was isolated from a marine Actinomadura sp., cultivated from the ascidian Ecteinascidia turbinata. 13C enrichment, high resolution NMR spectroscopy, and molecular modeling enabled elucidation of the structure of 1, which was validated on the basis of comparisons with its recently reported crystal structure. Importantly, ecteinamycin demonstrated potent activity against the toxigenic strain of Clostridium difficile NAP1/B1/027 (MIC = 59 ng/μL), as well as other toxigenic and nontoxigenic C. difficile isolates both in vitro and in vivo. Additionally, chemical genomics studies using Escherichia coli barcoded deletion mutants led to the identification of sensitive mutants such as trkA and kdpD involved in potassium cation transport and homeostasis supporting a mechanistic proposal that ecteinamycin acts as an ionophore antibiotic. This is the first antibacterial agent whose mechanism of action has been studied using E. coli chemical genomics. On the basis of these data, we propose ecteinamycin as an ionophore antibiotic that causes C. difficile detoxification and cell death via potassium transport dysregulation.
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Affiliation(s)
- Thomas P. Wyche
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | - René F. Ramos Alvarenga
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | | | - Megan N. Duster
- Department of Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | - Simone R. Warrack
- Department of Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | - Gabriel Cornilescu
- National Magnetic Resonance Facility at Madison, Department of Biochemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Travis J. De Wolfe
- Department of Food Science, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Yanpeng Hou
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | - Doug R. Braun
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | - Gregory A. Ellis
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | - Scott W. Simpkins
- Department of Computer Science and Engineering, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Justin Nelson
- Department of Computer Science and Engineering, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Chad L. Myers
- Department of Computer Science and Engineering, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States
| | - James Steele
- Department of Food Science, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Hirotada Mori
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara 630-0101, Japan
| | - Nasia Safdar
- Department of Medicine, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | - John L. Markley
- National Magnetic Resonance Facility at Madison, Department of Biochemistry, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Scott R. Rajski
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
| | - Tim S. Bugni
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin—Madison, Madison, Wisconsin 53705, United States
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17
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Mayer AMS, Rodríguez AD, Taglialatela-Scafati O, Fusetani N. Marine Pharmacology in 2012-2013: Marine Compounds with Antibacterial, Antidiabetic, Antifungal, Anti-Inflammatory, Antiprotozoal, Antituberculosis, and Antiviral Activities; Affecting the Immune and Nervous Systems, and Other Miscellaneous Mechanisms of Action. Mar Drugs 2017; 15:md15090273. [PMID: 28850074 PMCID: PMC5618412 DOI: 10.3390/md15090273] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 08/17/2017] [Accepted: 08/21/2017] [Indexed: 12/23/2022] Open
Abstract
The peer-reviewed marine pharmacology literature from 2012 to 2013 was systematically reviewed, consistent with the 1998–2011 reviews of this series. Marine pharmacology research from 2012 to 2013, conducted by scientists from 42 countries in addition to the United States, reported findings on the preclinical pharmacology of 257 marine compounds. The preclinical pharmacology of compounds isolated from marine organisms revealed antibacterial, antifungal, antiprotozoal, antituberculosis, antiviral and anthelmitic pharmacological activities for 113 marine natural products. In addition, 75 marine compounds were reported to have antidiabetic and anti-inflammatory activities and affect the immune and nervous system. Finally, 69 marine compounds were shown to display miscellaneous mechanisms of action which could contribute to novel pharmacological classes. Thus, in 2012–2013, the preclinical marine natural product pharmacology pipeline provided novel pharmacology and lead compounds to the clinical marine pharmaceutical pipeline, and contributed significantly to potentially novel therapeutic approaches to several global 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.
| | - Abimael D Rodríguez
- Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de León Avenue, San Juan, PR 00926, USA.
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18
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Chanana S, Thomas CS, Braun DR, Hou Y, Wyche TP, Bugni TS. Natural Product Discovery Using Planes of Principal Component Analysis in R (PoPCAR). Metabolites 2017; 7:metabo7030034. [PMID: 28703778 PMCID: PMC5618319 DOI: 10.3390/metabo7030034] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 06/20/2017] [Accepted: 07/11/2017] [Indexed: 01/11/2023] Open
Abstract
Rediscovery of known natural products hinders the discovery of new, unique scaffolds. Efforts have mostly focused on streamlining the determination of what compounds are known vs. unknown (dereplication), but an alternative strategy is to focus on what is different. Utilizing statistics and assuming that common actinobacterial metabolites are likely known, focus can be shifted away from dereplication and towards discovery. LC-MS-based principal component analysis (PCA) provides a perfect tool to distinguish unique vs. common metabolites, but the variability inherent within natural products leads to datasets that do not fit ideal standards. To simplify the analysis of PCA models, we developed a script that identifies only those masses or molecules that are unique to each strain within a group, thereby greatly reducing the number of data points to be inspected manually. Since the script is written in R, it facilitates integration with other metabolomics workflows and supports automated mass matching to databases such as Antibase.
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Affiliation(s)
- Shaurya Chanana
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI 53705, USA.
| | - Chris S Thomas
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI 53705, USA.
| | - Doug R Braun
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI 53705, USA.
| | - Yanpeng Hou
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI 53705, USA.
| | - Thomas P Wyche
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI 53705, USA.
- Exploratory Science Center, Merck & Co., 320 Bent St., Cambridge, MA 02141, USA.
| | - Tim S Bugni
- Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin, Madison, WI 53705, USA.
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19
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Dhakal D, Pokhrel AR, Shrestha B, Sohng JK. Marine Rare Actinobacteria: Isolation, Characterization, and Strategies for Harnessing Bioactive Compounds. Front Microbiol 2017; 8:1106. [PMID: 28663748 PMCID: PMC5471306 DOI: 10.3389/fmicb.2017.01106] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 05/31/2017] [Indexed: 12/28/2022] Open
Abstract
Actinobacteria are prolific producers of thousands of biologically active natural compounds with diverse activities. More than half of these bioactive compounds have been isolated from members belonging to actinobacteria. Recently, rare actinobacteria existing at different environmental settings such as high altitudes, volcanic areas, and marine environment have attracted attention. It has been speculated that physiological or biochemical pressures under such harsh environmental conditions can lead to the production of diversified natural compounds. Hence, marine environment has been focused for the discovery of novel natural products with biological potency. Many novel and promising bioactive compounds with versatile medicinal, industrial, or agricultural uses have been isolated and characterized. The natural compounds cannot be directly used as drug or other purposes, so they are structurally modified and diversified to ameliorate their biological or chemical properties. Versatile synthetic biological tools, metabolic engineering techniques, and chemical synthesis platform can be used to assist such structural modification. This review summarizes the latest studies on marine rare actinobacteria and their natural products with focus on recent approaches for structural and functional diversification of such microbial chemicals for attaining better applications.
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Affiliation(s)
- Dipesh Dhakal
- Department of Life Science and Biochemical Engineering, Sun Moon UniversityAsan-si, South Korea
| | - Anaya Raj Pokhrel
- Department of Life Science and Biochemical Engineering, Sun Moon UniversityAsan-si, South Korea
| | - Biplav Shrestha
- Department of Life Science and Biochemical Engineering, Sun Moon UniversityAsan-si, South Korea
| | - Jae Kyung Sohng
- Department of Life Science and Biochemical Engineering, Sun Moon UniversityAsan-si, South Korea.,Department of BT-Convergent Pharmaceutical Engineering, Sun Moon University Asan-siSouth Korea
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20
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Abstract
This review covers the literature published in 2013 for marine natural products (MNPs), with 982 citations (644 for the period January to December 2013) 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 (1163 for 2013), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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21
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Wyche TP, Piotrowski JS, Hou Y, Braun D, Deshpande R, McIlwain S, Ong IM, Myers CL, Guzei IA, Westler WM, Andes DR, Bugni TS. Forazoline A: Marine-Derived Polyketide with Antifungal In Vivo Efficacy. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405990] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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22
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Wyche TP, Piotrowski JS, Hou Y, Braun D, Deshpande R, McIlwain S, Ong IM, Myers CL, Guzei IA, Westler WM, Andes DR, Bugni TS. Forazoline A: marine-derived polyketide with antifungal in vivo efficacy. Angew Chem Int Ed Engl 2014; 53:11583-6. [PMID: 25197007 DOI: 10.1002/anie.201405990] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Indexed: 11/10/2022]
Abstract
Forazoline A, a novel antifungal polyketide with in vivo efficacy against Candida albicans, was discovered using LCMS-based metabolomics to investigate marine-invertebrate-associated bacteria. Forazoline A had a highly unusual and unprecedented skeleton. Acquisition of (13)C-(13)C gCOSY and (13)C-(15)N HMQC NMR data provided the direct carbon-carbon and carbon-nitrogen connectivity, respectively. This approach represents the first example of determining direct (13)C-(15)N connectivity for a natural product. Using yeast chemical genomics, we propose that forazoline A operated through a new mechanism of action with a phenotypic outcome of disrupting membrane integrity.
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Affiliation(s)
- Thomas P Wyche
- Pharmaceutical Sciences Division, University of Wisconsin-Madison, Madison, WI 53705 (USA)
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