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Liu JX, Li H, Zhang SP, Lu SC, Gong YL, Xu S. Strategies for the Construction of Benzobicyclo[3.2.1]octane in Natural Product Synthesis. Chemistry 2024; 30:e202303989. [PMID: 38345999 DOI: 10.1002/chem.202303989] [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: 11/30/2023] [Indexed: 03/01/2024]
Abstract
Benzobicyclo[3.2.1]octane is a cage-like unique motif containing a bicyclo[3.2.1]octane structure fused with at least one benzene ring. It is found in various natural products that exhibit structural complexities and important biological activities. The total synthesis of natural products possessing this challenging structure has received considerable attention, and great advances have been made in this field during the past 15 years. This review summarizes thus far achieved chemical syntheses and synthetic studies of natural compounds featuring the benzobicyclo[3.2.1]octane core. It focuses on strategic approaches constructing the bridged structure, aiming to provide a useful reference for inspiring further advancements in strategies and total syntheses of natural products with such a framework.
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Affiliation(s)
- Jia-Xuan Liu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Hui Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Shi-Peng Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Shi-Chao Lu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Ya-Ling Gong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
| | - Shu Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, and Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 2A Nanwei Road, Xicheng District, Beijing, 100050, China
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2
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Zhang L, Esquembre LA, Xia SN, Oesterhelt F, Hughes CC, Brötz-Oesterhelt H, Teufel R. Antibacterial Synnepyrroles from Human-Associated Nocardiopsis sp. Show Protonophore Activity and Disrupt the Bacterial Cytoplasmic Membrane. ACS Chem Biol 2022; 17:2836-2848. [PMID: 36179367 DOI: 10.1021/acschembio.2c00460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Actinobacteria have traditionally been an important source of bioactive natural products, although many genera remain poorly explored. Here, we report a group of distinctive pyrrole-containing natural products, named synnepyrroles, from Nocardiopsis synnemataformans. Detailed structural characterization by mass spectrometry and nuclear magnetic resonance (NMR) spectroscopy combined with isotope-labeling experiments revealed their molecular structures and biosynthetic precursors acetate, propionate, aspartate, and (for branched analogues) valine. The biosynthetic data points toward an unusual pathway for pyrrole formation via condensation of aspartate with diverse fatty acids that give rise to a unique pyrrole-3,4-dicarboxylate core and variable linear or terminally branched alkyl side chains. In addition, the bioactivity and mode of action of synnepyrrole A were characterized in Bacillus subtilis. Orienting assessment of the phenotype of synnepyrrole A-treated bacteria by high-resolution microscopy suggested the cytoplasmic membrane as the target structure. Further characterization of the membrane effects demonstrated dissipation of the membrane potential and intracellular acidification indicative of protonophore activity. At slightly higher concentrations, synnepyrrole A compromised the barrier function of the cytoplasmic membrane, allowing the passage of otherwise membrane-impermeable dye molecules.
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Affiliation(s)
- Lei Zhang
- Faculty of Biology, University of Freiburg, Schänzlestrasse 1, 79104 Freiburg, Germany
| | - Lidia Alejo Esquembre
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Germany
| | - Shu-Ning Xia
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Germany
| | - Filipp Oesterhelt
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Germany
| | - Chambers C Hughes
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Germany.,Cluster of Excellence EXC 2124: Controlling Microbes to Fight Infection, University of Tübingen, 72076 Tübingen, Germany.,German Center for Infection Research, Partner Site Tübingen, 72076 Tübingen, Germany
| | - Heike Brötz-Oesterhelt
- Department of Microbial Bioactive Compounds, Interfaculty Institute for Microbiology and Infection Medicine, University of Tübingen, 72076 Tübingen, Germany.,Cluster of Excellence EXC 2124: Controlling Microbes to Fight Infection, University of Tübingen, 72076 Tübingen, Germany.,German Center for Infection Research, Partner Site Tübingen, 72076 Tübingen, Germany
| | - Robin Teufel
- Pharmaceutical Biology, Department of Pharmaceutical Sciences, Klingelbergstrasse 50, University of Basel, 4056 Basel, Switzerland
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Qualitative and Quantitative Comparison of Liquid–Liquid Phase Extraction Using Ethyl Acetate and Liquid–Solid Phase Extraction Using Poly-Benzyl-Resin for Natural Products. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app112110241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A key step in the process of isolating microbial natural products is the preparation of an extract from a culture. This step determines which molecules will be available for detection in the subsequent chemical and biological analysis of a biodiscovery pipeline. In the present study we wanted to document potential differences in performance between liquid–liquid extraction using ethyl acetate and liquid–solid extraction using a poly-benzyl-resin. For the comparison of the two extraction protocols, we spiked a culture of Flavobacterium sp. with a diverse selection of natural products of microbial and plant origin to investigate whether the methods were comparable with respect to selectivity. We also investigated the efficiency of the two extraction methods quantitatively, using water spiked with a selection of natural products, and studied the quantitative effect of different pH levels of the aqueous solutions on the extraction yields of the two methods. The same compounds were extracted by the two methods, but the solid-phase extract contained more media components compared with the liquid-phase extract. Quantitatively, the two extraction methods varied in their recovery rates. We conclude that practical aspects could be more important when selecting one of the extraction protocols, as their efficiencies in extracting specific compounds were quite similar.
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4
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Axenov-Gribanov DV, Morgunova MM, Vasilieva UA, Gamaiunov SV, Dmitrieva (Krasnova) ME, Pereliaeva EV, Belyshenko AY, Luzhetskyy AN. Composition of nutrient media and temperature of cultivation imposes effect on the content of secondary metabolites of Nocardiopsis sp. isolated from a Siberian Cave. 3 Biotech 2021; 11:386. [PMID: 34350091 PMCID: PMC8319253 DOI: 10.1007/s13205-021-02926-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/14/2021] [Indexed: 11/25/2022] Open
Abstract
Growth of human population leads to many global and medical problems. The problems include the crisis of health, antibiotic resistance, drug discovery, etc. Increasing antimicrobial resistance of microorganisms results in the need to screen natural products (incl. antibiotics and antimicrobial peptides) and their producers in different ecological niches. The purpose of this study was to estimate antibiotic activity and biotechnological potential of rare actinobacteria Nocardiopsis sp. The strain was isolated from Okhotnichya cave located in Siberia. Here, we cultivated the strain at 3 temperature modes (13 °C, 28 °C, 37 °C) in 11 liquid nutrient (rich and poor) media. Using modern assays of liquid chromatography and high-resolution mass spectrometry, we estimated the content and number of produced natural products, distribution of their masses, and potential rate of novel secondary metabolites. We demonstrated that minimal nutrient media with l-asparagine and SM25 media with malt extract were less productive at current experimental parameters. As it was shown, this strain was characterized by antibiotic properties against Bacillus subtilis when cultivated at 28 °C. Also, weak antibiotic activity of crude extracts was found in strain cultivation at 13 °C. Also, we detected a high number of novel amphiphilic and hydrophobic NPs produced by this strain. We demonstrated both the influence of the nutrient media composition and cultivation temperature on biosynthetic capabilities of rare strain Nocardiopsis sp. Finally, high level of natural products that were predicted as novel confirms high biotechnological value of rare genera of Actinobacteria that could be explained by the evolution of microorganisms in the isolated environment of cave ecosystem.
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Affiliation(s)
| | | | - Ulyana A. Vasilieva
- Irkutsk State University, 1 Karl Marx St, 664003 Irkutsk, Russia
- Siberian Institute of Plant Physiology and Biochemistry, 132 Lermontov Str, 664033 Irkutsk, Russia
| | - Stanislav V. Gamaiunov
- Irkutsk State University, 1 Karl Marx St, 664003 Irkutsk, Russia
- Speleology Club Arabica, 11 Berezovaya Rosha Str, 664043 Irkutsk, Russia
| | | | | | | | - Andriy N. Luzhetskyy
- Pharmaceutical Biotechnology, University of Saarland, Campus, C2.3, 66123 Saarbrücken, Germany
- Helmholtz Institute for Pharmaceutical Research Saarland, Campus, C2.3, 66123 Saarbrücken, Germany
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5
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Junkins EN, Stevenson BS. Using Plate-Wash PCR and High-Throughput Sequencing to Measure Cultivated Diversity for Natural Product Discovery Efforts. Front Microbiol 2021; 12:675798. [PMID: 34354680 PMCID: PMC8329497 DOI: 10.3389/fmicb.2021.675798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 06/28/2021] [Indexed: 12/16/2022] Open
Abstract
Molecular techniques continue to reveal a growing disparity between the immense diversity of microbial life and the small proportion that is in pure culture. The disparity, originally dubbed “the great plate count anomaly” by Staley and Konopka, has become even more vexing given our increased understanding of the importance of microbiomes to a host and the role of microorganisms in the vital biogeochemical functions of our biosphere. Searching for novel antimicrobial drug targets often focuses on screening a broad diversity of microorganisms. If diverse microorganisms are to be screened, they need to be cultivated. Recent innovative research has used molecular techniques to assess the efficacy of cultivation efforts, providing invaluable feedback to cultivation strategies for isolating targeted and/or novel microorganisms. Here, we aimed to determine the efficiency of cultivating representative microorganisms from a non-human, mammalian microbiome, identify those microorganisms, and determine the bioactivity of isolates. Sequence-based data indicated that around 57% of the ASVs detected in the original inoculum were cultivated in our experiments, but nearly 53% of the total ASVs that were present in our cultivation experiments were not detected in the original inoculum. In light of our controls, our data suggests that when molecular tools were used to characterize our cultivation efforts, they provided a more complete and more complex, understanding of which organisms were present compared to what was eventually detected during cultivation. Lastly, about 3% of the isolates collected from our cultivation experiments showed inhibitory bioactivity against an already multidrug-resistant pathogen panel, further highlighting the importance of informing and directing future cultivation efforts with molecular tools.
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Affiliation(s)
- Emily N Junkins
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, United States
| | - Bradley S Stevenson
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, United States
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6
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Wilson ZE, Brimble MA. Molecules derived from the extremes of life: a decade later. Nat Prod Rep 2020; 38:24-82. [PMID: 32672280 DOI: 10.1039/d0np00021c] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Covering: Early 2008 until the end of 2019Microorganisms which survive (extreme-tolerant) or even prefer (extremophilic) living at the limits of pH, temperature, salinity and pressure found on earth have proven to be a rich source of novel structures. In this update we summarise the wide variety of new molecules which have been isolated from extremophilic and extreme-tolerant microorganisms since our original 2009 review, highlighting the range of bioactivities these molecules have been reported to possess.
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Affiliation(s)
- Zoe E Wilson
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland 1010, New Zealand.
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Mamo G, Mattiasson B. Alkaliphiles: The Versatile Tools in Biotechnology. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2020; 172:1-51. [PMID: 32342125 DOI: 10.1007/10_2020_126] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The extreme environments within the biosphere are inhabited by organisms known as extremophiles. Lately, these organisms are attracting a great deal of interest from researchers and industrialists. The motive behind this attraction is mainly related to the desire for new and efficient products of biotechnological importance and human curiosity of understanding nature. Organisms living in common "human-friendly" environments have served humanity for a very long time, and this has led to exhaustion of the low-hanging "fruits," a phenomenon witnessed by the diminishing rate of new discoveries. For example, acquiring novel products such as drugs from the traditional sources has become difficult and expensive. Such challenges together with the basic research interest have brought the exploration of previously neglected or unknown groups of organisms. Extremophiles are among these groups which have been brought to focus and garnering a growing importance in biotechnology. In the last few decades, numerous extremophiles and their products have got their ways into industrial, agricultural, environmental, pharmaceutical, and other biotechnological applications.Alkaliphiles, organisms which thrive optimally at or above pH 9, are one of the most important classes of extremophiles. To flourish in their extreme habitats, alkaliphiles evolved impressive structural and functional adaptations. The high pH adaptation gave unique biocatalysts that are operationally stable at elevated pH and several other novel products with immense biotechnological application potential. Advances in the cultivation techniques, success in gene cloning and expression, metabolic engineering, metagenomics, and other related techniques are significantly contributing to expand the application horizon of these remarkable organisms of the 'bizarre' world. Studies have shown the enormous potential of alkaliphiles in numerous biotechnological applications. Although it seems just the beginning, some fantastic strides are already made in tapping this potential. This work tries to review some of the prominent applications of alkaliphiles by focusing such as on their enzymes, metabolites, exopolysaccharides, and biosurfactants. Moreover, the chapter strives to assesses the whole-cell applications of alkaliphiles including in biomining, food and feed supplementation, bioconstruction, microbial fuel cell, biofuel production, and bioremediation.
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Affiliation(s)
| | - Bo Mattiasson
- Department of Biotechnology, Lund University, Lund, Sweden
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Mullis MM, Rambo IM, Baker BJ, Reese BK. Diversity, Ecology, and Prevalence of Antimicrobials in Nature. Front Microbiol 2019; 10:2518. [PMID: 31803148 PMCID: PMC6869823 DOI: 10.3389/fmicb.2019.02518] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 10/18/2019] [Indexed: 12/15/2022] Open
Abstract
Microorganisms possess a variety of survival mechanisms, including the production of antimicrobials that function to kill and/or inhibit the growth of competing microorganisms. Studies of antimicrobial production have largely been driven by the medical community in response to the rise in antibiotic-resistant microorganisms and have involved isolated pure cultures under artificial laboratory conditions neglecting the important ecological roles of these compounds. The search for new natural products has extended to biofilms, soil, oceans, coral reefs, and shallow coastal sediments; however, the marine deep subsurface biosphere may be an untapped repository for novel antimicrobial discovery. Uniquely, prokaryotic survival in energy-limited extreme environments force microbial populations to either adapt their metabolism to outcompete or produce novel antimicrobials that inhibit competition. For example, subsurface sediments could yield novel antimicrobial genes, while at the same time answering important ecological questions about the microbial community.
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Affiliation(s)
- Megan M. Mullis
- Department of Life Sciences, Texas A&M University Corpus Christi, Corpus Christi, TX, United States
| | - Ian M. Rambo
- Department of Marine Science, University of Texas Marine Science Institute, Port Aransas, TX, United States
| | - Brett J. Baker
- Department of Marine Science, University of Texas Marine Science Institute, Port Aransas, TX, United States
| | - Brandi Kiel Reese
- Department of Life Sciences, Texas A&M University Corpus Christi, Corpus Christi, TX, United States
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Khalikova E, Somersalo S, Korpela T. Metabolites Produced by Alkaliphiles with Potential Biotechnological Applications. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2019; 172:157-193. [PMID: 31240347 DOI: 10.1007/10_2019_96] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Alkaliphiles are a diverse group of relatively less known microorganisms living in alkaline environments. To thrive in alkaline environments, alkaliphiles require special adaptations. This adaptation may have evolved metabolites which can be useful for biotechnological processes or other applications. In fact, certain metabolites are found unique to alkaliphiles or are effectively produced by alkaliphiles. This probably aroused the interest in metabolites of alkaliphiles. During recent years, many alkaliphilic microbes have been isolated, especially in countries having alkaline environments, like soda lakes. Even if the number of such isolated alkaliphiles is large, their metabolites have not yet been extensively analyzed and exploited. This is expected to come in the years ahead. So far, the focus of interests in metabolites from alkaliphiles falls into categories such as organic acids, ingredients for foodstuffs and cosmetics, antibiotics, and substances which modify properties of other materials used in industry. This chapter deals with biotechnologically important metabolites of alkaliphiles including compatible solutes, biosurfactants, siderophores, carotenoids, exopolysaccharides, and antimicrobial agents. It also covers the promising potential of alkaliphiles as sources of bioplastic raw materials. Moreover, an overview of the patent literature related to alkaliphiles is highlighted. Graphical Abstract.
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Affiliation(s)
- Elvira Khalikova
- Joint Biotechnology Laboratory, University of Turku, Turku, Finland
| | | | - Timo Korpela
- Department of Future Technologies, University of Turku, Turku, Finland.
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10
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Cornell CR, Marasini D, Fakhr MK. Molecular Characterization of Plasmids Harbored by Actinomycetes Isolated From the Great Salt Plains of Oklahoma Using PFGE and Next Generation Whole Genome Sequencing. Front Microbiol 2018; 9:2282. [PMID: 30356833 PMCID: PMC6190872 DOI: 10.3389/fmicb.2018.02282] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 09/06/2018] [Indexed: 11/25/2022] Open
Abstract
One of the unique features of actinomycetes, especially the genus Streptomyces, is the presence of linear plasmids. These range in size from 12 to 600 kb, and are often termed mega-plasmids. While many of the genes involved in secondary metabolite production reside in clusters on the chromosome, several studies have identified biosynthetic clusters on large linear plasmids that produce important secondary metabolites, including antibiotics. In this study, Pulse Field Gel Electrophoresis (PFGE) was used to screen 176 actinomycete isolates for the presence of plasmids; these bacterial strains were previously isolated from the Great Salt Plains of Oklahoma. Seventy-eight of the 176 actinomycete isolates (44%) contained plasmids. Several strains contained more than one plasmid, accounting for a total of 109 plasmids. Ten isolates showed extrachromosomal DNA larger than 200 kb, thus falling into the category of mega-plasmids. A subset of plasmids from 55 isolates was treated with S1 nuclease to determine topology; all plasmids examined appeared to be linear and ranged from ~55 to 400 kb. Eleven isolates were chosen for Whole Genome Next Generation Sequencing. From the 11 sequenced isolates, seven plasmids were partially assembled. While the majority of the genes identified on the plasmids coded for hypothetical proteins, others coded for general functions, stress response, and antibiotic and heavy metal resistance. Draft genome sequences of two mega-plasmid-bearing Streptomyces sp. strains, BF-3 and 4F, revealed the presence of genes involved in antibiotic production, antibiotic, and heavy metal resistance, osmoregulation, and stress response, which likely facilitate their survival in this extreme halophilic environment. To our knowledge, this is the first study to explore plasmids harbored by actinomycetes isolated from the Great Salt Plains of Oklahoma.
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Affiliation(s)
| | | | - Mohamed K. Fakhr
- Department of Biological Science, The University of Tulsa, Tulsa, OK, United States
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11
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Chunyu WX, Zhao JY, Ding ZG, Wang YX, Han XL, Li MG, Wen ML. A New Dichlorinated Aromatic Lactone from the Tin Mine Tailings-Derived Fungus Torula sp. YIM DT 10072. Chem Nat Compd 2018. [DOI: 10.1007/s10600-018-2372-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Chunyu WX, Zhao JY, Ding ZG, Han XL, Wang YX, Ding JH, Wang F, Li MG, Wen ML. A new cyclohexenone from the tin mine tailings-derived fungus Aspergillus flavus YIM DT 10012. Nat Prod Res 2018; 33:113-116. [PMID: 29376405 DOI: 10.1080/14786419.2018.1431636] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A new cyclohexenone, named phomaligol D (1), together with two known compounds, kojic acid (2) and phomaligol A (3) were isolated from the tin mine tailings-derived fungus Aspergillus flavus YIM DT 10012. Their structures were elucidated by detailed analysis of spectroscopic data.
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Affiliation(s)
- Wei-Xun Chunyu
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China.,e Department of Pathogen Biology and Immunology , Kunming Medical University , Kunming , PR China
| | - Jiang-Yuan Zhao
- b Key Laboratory of Medicinal Chemistry for Natural Resource of the Ministry of Education , Yunnan University , Kunming , PR China
| | - Zhang-Gui Ding
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
| | - Xiu-Lin Han
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
| | - Yong-Xia Wang
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
| | - Jian-Hai Ding
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China.,c Engineering and Technology Research Center of Liupanshan Resources, College of Chemistry and Chemical Engineering , Ningxia Normal University , Guyuan , PR China
| | - Fei Wang
- d BioBioPha Co., Ltd. , Kunming , PR China
| | - Ming-Gang Li
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
| | - Meng-Liang Wen
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
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13
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Ding JH, Ding ZG, Chunyu WX, Zhao JY, Wang HB, Liu SW, Wang F. Three new drimane sesquiterpenoids from cultures of the fungus Penicillium sp. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2017; 19:780-785. [PMID: 27892687 DOI: 10.1080/10286020.2016.1261830] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 11/15/2016] [Indexed: 06/06/2023]
Abstract
Three new drimane sesquiterpenoids, 12-hydroxyalbrassitriol (1), drim-8(12)-en-6β,7α, 9α,11-tetraol (2), and drim-68(12)-dien-9α,11-diol (3), along with one known analog albrassitriol (4), were isolated from cultures of the tin mine tailings-associated fungus Penicillium sp. The new structures were determined on the basis of extensive spectroscopic analyses. All compounds were tested for their cytotoxicities against five human cancer cell lines.
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Affiliation(s)
- Jian-Hai Ding
- a Engineering and Technology Research Center of Liupanshan Resources, College of Chemistry and Chemical Engineering , Ningxia Normal University , Guyuan 756000 , China
| | - Zhang-Gui Ding
- b Key Laboratory for Microbial Resources, Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming 650091 , China
| | - Wei-Xun Chunyu
- b Key Laboratory for Microbial Resources, Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming 650091 , China
| | - Jiang-Yuan Zhao
- b Key Laboratory for Microbial Resources, Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming 650091 , China
| | - Hai-Bin Wang
- a Engineering and Technology Research Center of Liupanshan Resources, College of Chemistry and Chemical Engineering , Ningxia Normal University , Guyuan 756000 , China
| | - Shi-Wei Liu
- a Engineering and Technology Research Center of Liupanshan Resources, College of Chemistry and Chemical Engineering , Ningxia Normal University , Guyuan 756000 , China
| | - Fei Wang
- c BioBioPha Co., Ltd. , Kunming 650201 , China
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14
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Hill P, Heberlig GW, Boddy CN. Sampling Terrestrial Environments for Bacterial Polyketides. Molecules 2017; 22:E707. [PMID: 28468277 PMCID: PMC6154731 DOI: 10.3390/molecules22050707] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 04/14/2017] [Accepted: 04/18/2017] [Indexed: 12/17/2022] Open
Abstract
Bacterial polyketides are highly biologically active molecules that are frequently used as drugs, particularly as antibiotics and anticancer agents, thus the discovery of new polyketides is of major interest. Since the 1980s discovery of polyketides has slowed dramatically due in large part to the repeated rediscovery of known compounds. While recent scientific and technical advances have improved our ability to discover new polyketides, one key area has been under addressed, namely the distribution of polyketide-producing bacteria in the environment. Identifying environments where producing bacteria are abundant and diverse should improve our ability to discover (bioprospect) new polyketides. This review summarizes for the bioprospector the state-of-the-field in terrestrial microbial ecology. It provides insight into the scientific and technical challenges limiting the application of microbial ecology discoveries for bioprospecting and summarizes key developments in the field that will enable more effective bioprospecting. The major recent efforts by researchers to sample new environments for polyketide discovery is also reviewed and key emerging environments such as insect associated bacteria, desert soils, disease suppressive soils, and caves are highlighted. Finally strategies for taking and characterizing terrestrial samples to help maximize discovery efforts are proposed and the inclusion of non-actinomycetal bacteria in any terrestrial discovery strategy is recommended.
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Affiliation(s)
- Patrick Hill
- Department of Biology, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
| | - Graham W Heberlig
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
| | - Christopher N Boddy
- Department of Biology, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
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15
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Chunyu WX, Ding ZG, Zhao JY, Wang YX, Han XL, Li MG, Wen ML. Two new diketopiperazines from the tin mine tailings-derived fungus Schizophyllum commune YIM DT 10058. Nat Prod Res 2017; 31:1566-1572. [DOI: 10.1080/14786419.2016.1274894] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Wei-Xun Chunyu
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Zhang-Gui Ding
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Jiang-Yuan Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource of the Ministry of Education, Yunnan University, Kunming, PR China
| | - Yong-Xia Wang
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Xiu-Lin Han
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Ming-Gang Li
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Meng-Liang Wen
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
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16
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Zhang YG, Lu XH, Ding YB, Zhou XK, Wang HF, Guo JW, Liu YH, Duan YQ, Li WJ. Nocardiopsis rhizosphaerae sp. nov., isolated from rhizosphere soil of Halocnermum strobilaceum (Pall.) Bieb. Int J Syst Evol Microbiol 2016; 66:5129-5133. [PMID: 27613380 DOI: 10.1099/ijsem.0.001483] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An alkalitolerant actinomycete strain, designated EGI 80674T, was isolated from a rhizosphere soil of Halocnermumstrobilaceum (Pall.) Bieb in Xinjiang, north-west China and subjected to a taxonomic characterization using a polyphasic approach. Strain EGI 80674T formed white aerial hyphae with long spore chains. Whole-cell hydrolysates of the isolate contained meso-diaminopimelic acid as the diagnostic diamino acid with no diagnostic sugars. The major fatty acids identified were iso-C16 : 0, anteiso-C17 : 0 and 10-methyl-C18 : 0TBSA. The predominant menaquinones detected were MK-10(H8) and MK-10(H6). The G+C content of the genomic DNA of strain EGI 80674T was 70.9 mol%. Strain EGI 80674T showed the highest 16S rRNA gene sequence similarity (97.24 %) to Nocardiopsis nikkonensis NBRC 102170T. The DNA-DNA relatedness value of strain EGI 80674T and N. nikkonensis NBRC 102170T was 18.4±1.3 %. Phenotypical, chemotaxonomic and phylogenetic characteristics and DNA-DNA hybridization data suggest that strain EGI 80674T represents a novel species of the genus Nocardiopsis, for which the name Nocardiopsis rhizosphaerae sp. nov. is proposed. The type strain is EGI 80674T (=CGMCC 4.7228T=KCTC 39673T).
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Affiliation(s)
- Yong-Guang Zhang
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China
| | - Xin-Hua Lu
- New Drug Research & Development Center, North China Pharmaceutical Group Corporation, National Microbial Medicine Engineering & Research Center, Shijiazhuang 050015, PR China
| | - Yan-Bo Ding
- New Drug Research & Development Center, North China Pharmaceutical Group Corporation, National Microbial Medicine Engineering & Research Center, Shijiazhuang 050015, PR China
| | - Xing-Kui Zhou
- China Tobacco Yunnan Industrial Co, Ltd., Kunming 650231, PR China
| | - Hong-Fei Wang
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China.,College of Life Science, Liaoning Normal University, Dalian 116029, PR China
| | - Jian-Wei Guo
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China.,Key Laboratory of Higher Quality and Efficient Cultivation and Security Control of Crops for Yunnan Province, Honghe University, Mengzi 661100, PR China
| | - Yong-Hong Liu
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China
| | - Yan-Qing Duan
- China Tobacco Yunnan Industrial Co, Ltd., Kunming 650231, PR China
| | - Wen-Jun Li
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China.,Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China
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17
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Chunyu WX, Ding ZG, Li MG, Zhao JY, Gu SJ, Gao Y, Wang F, Ding JH, Wen ML. Stachartins A - E, Phenylspirodrimanes from the Tin Mine Tailings-Associated FungusStachybotrys chartarum. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201600020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wei-Xun Chunyu
- Key Laboratory for Microbial Resources; Ministry of Education; Yunnan Institute of Microbiology; Yunnan University; Kunming 650091 P. R. China
| | - Zhang-Gui Ding
- Key Laboratory for Microbial Resources; Ministry of Education; Yunnan Institute of Microbiology; Yunnan University; Kunming 650091 P. R. China
| | - Ming-Gang Li
- Key Laboratory for Microbial Resources; Ministry of Education; Yunnan Institute of Microbiology; Yunnan University; Kunming 650091 P. R. China
| | - Jiang-Yuan Zhao
- Key Laboratory for Microbial Resources; Ministry of Education; Yunnan Institute of Microbiology; Yunnan University; Kunming 650091 P. R. China
| | - Shao-Jie Gu
- BioBioPha Co., Ltd.; Kunming 650201 P. R. China
| | - Yuan Gao
- BioBioPha Co., Ltd.; Kunming 650201 P. R. China
| | - Fei Wang
- BioBioPha Co., Ltd.; Kunming 650201 P. R. China
| | - Jian-Hai Ding
- College of Chemistry and Chemical Engineering; Ningxia Normal University; Guyuan 756000 P. R. China
| | - Meng-Liang Wen
- Key Laboratory for Microbial Resources; Ministry of Education; Yunnan Institute of Microbiology; Yunnan University; Kunming 650091 P. R. China
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18
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Alkaliphilic Bacteria and Thermophilic Actinomycetes as New Sources of Antimicrobial Compounds. Ind Biotechnol (New Rochelle N Y) 2016. [DOI: 10.1201/b19347-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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19
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El-Gendy MMAA, El-Bondkly AMA. Evaluation and enhancement of heavy metals bioremediation in aqueous solutions by Nocardiopsis sp. MORSY1948, and Nocardia sp. MORSY2014. Braz J Microbiol 2016; 47:571-86. [PMID: 27245130 PMCID: PMC4927648 DOI: 10.1016/j.bjm.2016.04.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 02/20/2016] [Indexed: 11/28/2022] Open
Abstract
An analysis of wastewater samples collected from different industrial regions of Egypt demonstrated dangerously high levels of nickel (0.27-31.50mgL(-1)), chromium (1.50-7.41mgL(-1)) and zinc (1.91-9.74mgL(-1)) in the effluents. Alarmingly, these heavy metals are among the most toxic knownones to humans and wildlife. Sixty-nine Actinomycete isolates derived from contaminated sites were evaluated under single, binary, and ternary systems for their biosorption capacity for Ni(2+), Cr(6+) and Zn(2+) from aqueous solutions. The results of the study identified isolates MORSY1948 and MORSY2014 as the most active biosorbents. Phenotypic and chemotypic characterization along with molecular phylogenetic evidence confirmed that the two strains are members of the Nocardiopsis and Nocardia genera, respectively. The results also proved that for both the strains, heavy metal reduction was more efficient with dead rather than live biomass. The affinity of the dead biomass of MORSY1948 strain for Ni(2+), Cr(6+) and Zn(2+) under the optimized pH conditions of 7, 8 and 7, respectively at 40°C temperature with 0.3% biosorbent dosage was found to be as follows: Ni(2+) (87.90%)>Zn(2+) (84.15%)>Cr(6+) (63.75%). However, the dead biomass of MORSY2014 strain under conditions of pH 8 and 50°C temperature with 0.3% biosorbent dose exhibited the highest affinity which was as follows: Cr(6+) (95.22%)>Ni(2+) (93.53%)>Zn(2+) (90.37%). All heavy metals under study were found to be removed from aqueous solutions in entirety when the sorbent dosage was increased to 0.4%.
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Affiliation(s)
- Mervat Morsy Abbas Ahmed El-Gendy
- Department of Biological Sciences, Faculty of Sciences, King Abdulaziz University (KAU), Jeddah, Saudi Arabia; Chemistry of Natural and Microbial Products Department, National Research Centre, Dokki, Giza, Egypt
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20
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Smanski MJ, Schlatter DC, Kinkel LL. Leveraging ecological theory to guide natural product discovery. ACTA ACUST UNITED AC 2016; 43:115-28. [DOI: 10.1007/s10295-015-1683-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 08/29/2015] [Indexed: 12/31/2022]
Abstract
Abstract
Technological improvements have accelerated natural product (NP) discovery and engineering to the point that systematic genome mining for new molecules is on the horizon. NP biosynthetic potential is not equally distributed across organisms, environments, or microbial life histories, but instead is enriched in a number of prolific clades. Also, NPs are not equally abundant in nature; some are quite common and others markedly rare. Armed with this knowledge, random ‘fishing expeditions’ for new NPs are increasingly harder to justify. Understanding the ecological and evolutionary pressures that drive the non-uniform distribution of NP biosynthesis provides a rational framework for the targeted isolation of strains enriched in new NP potential. Additionally, ecological theory leads to testable hypotheses regarding the roles of NPs in shaping ecosystems. Here we review several recent strain prioritization practices and discuss the ecological and evolutionary underpinnings for each. Finally, we offer perspectives on leveraging microbial ecology and evolutionary biology for future NP discovery.
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Affiliation(s)
- Michael J Smanski
- grid.17635.36 0000000419368657 Department of Biochemistry, Molecular Biology, and Biophysics University of Minnesota-Twin Cities 55108 Saint Paul MN USA
- grid.17635.36 0000000419368657 BioTechnology Institute University of Minnesota-Twin Cities 55108 Saint Paul MN USA
| | - Daniel C Schlatter
- grid.17635.36 0000000419368657 Department of Plant Pathology University of Minnesota-Twin Cities 55108 Saint Paul MN USA
| | - Linda L Kinkel
- grid.17635.36 0000000419368657 BioTechnology Institute University of Minnesota-Twin Cities 55108 Saint Paul MN USA
- grid.17635.36 0000000419368657 Department of Plant Pathology University of Minnesota-Twin Cities 55108 Saint Paul MN USA
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21
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Abstract
Natural products have traditionally been a major source of leads in the drug discovery process. However, the development of high-throughput screening led to an increased interest in synthetic methods that enabled the rapid construction of large libraries of molecules. This resulted in the termination or downscaling of many natural product research programs, but the chemical libraries did not necessarily produce a larger amount of drug leads. On one hand, this chapter explores the current state of natural product research within the drug discovery process. On the other hand it evaluates the efforts made to increase the amount of leads generated from chemical libraries and considers what role natural products could play here.
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Affiliation(s)
- Eric F van Herwerden
- Institute of Chemistry, Technische Universität Berlin, Strasse des 17. Juni 124, 10623, Berlin, Germany
| | - Roderich D Süssmuth
- Institute of Chemistry, Technische Universität Berlin, Strasse des 17. Juni 124, 10623, Berlin, Germany.
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22
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Zhang YG, Liu Q, Wang HF, Park DJ, Guo JW, Kim CJ, Zhang YM, Li WJ. Nocardiopsis ansamitocini sp. nov., a new producer of ansamitocin P-3 of the genus Nocardiopsis. Int J Syst Evol Microbiol 2015; 66:230-235. [PMID: 26486850 DOI: 10.1099/ijsem.0.000703] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An alkalitolerant actinomycete strain, designated EGI 80425T, capable of producing ansamitocin P-3, was isolated from a saline-alkali soil sample of Xinjiang province, north-west China, and subjected to a polyphasic taxonomic characterization. Strain EGI 80425T formed non-fragmented substrate mycelia and white aerial hyphae with long spore chains. Whole-cell hydrolysates of the isolate contained meso-diaminopimelic acid as the diagnostic diamino acid and rhamnose as the major sugar. The major fatty acids were anteiso-C17 : 0, iso-C16 : 0 and C18 : 1ω9c. The predominant menaquinones were MK-10(H4), MK-10(H6), MK-10(H8) and MK-9(H4). The G+C content of the genomic DNA of strain EGI 80425T was 70.2 mol%. Strain EGI 80425T showed highest 16S rRNA gene sequence similarity to Nocardiopsis dassonvillei subsp. dassonvillei DSM 43111T (96.44 %). Phylogenetic analysis showed that strain EGI 80425T clustered with the members of the genus Nocardiopsis. Based on phenotypic, chemotaxonomic and phylogenetic characteristics, strain EGI 80425T represents a novel species of the genus Nocardiopsis, for which the name Nocardiopsis ansamitocini sp. nov. is proposed. The type strain is EGI 80425T ( = CGMCC 9969T = KCTC 39605T).
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Affiliation(s)
- Yong-Guang Zhang
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China
| | - Qing Liu
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, College of Ecology and Evolution, Sun Yat-Sen University, Guangzhou, 510275, PR China.,Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China
| | - Hong-Fei Wang
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China
| | - Dong-Jin Park
- Microbial Resource Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon 305-806, Republic of Korea
| | - Jian-Wei Guo
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China.,Key Laboratory of Higher Quality and Efficient Cultivation and Security Control of Crops for Yunnan Province, Honghe University, Mengzi 661100, PR China
| | - Chang-Jin Kim
- Microbial Resource Center, Korea Research Institute of Bioscience & Biotechnology, Daejeon 305-806, Republic of Korea
| | - Yuan-Ming Zhang
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China
| | - Wen-Jun Li
- Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürűmqi 830011, PR China.,Yunnan Institute of Microbiology, Yunnan University, Kunming, 650091, PR China.,State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, College of Ecology and Evolution, Sun Yat-Sen University, Guangzhou, 510275, PR China
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23
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Azman AS, Othman I, Velu SS, Chan KG, Lee LH. Mangrove rare actinobacteria: taxonomy, natural compound, and discovery of bioactivity. Front Microbiol 2015; 6:856. [PMID: 26347734 PMCID: PMC4542535 DOI: 10.3389/fmicb.2015.00856] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 08/06/2015] [Indexed: 11/13/2022] Open
Abstract
Actinobacteria are one of the most important and efficient groups of natural metabolite producers. The genus Streptomyces have been recognized as prolific producers of useful natural compounds as they produced more than half of the naturally-occurring antibiotics isolated to-date and continue as the primary source of new bioactive compounds. Lately, Streptomyces groups isolated from different environments produced the same types of compound, possibly due to frequent genetic exchanges between species. As a result, there is a dramatic increase in demand to look for new compounds which have pharmacological properties from another group of Actinobacteria, known as rare actinobacteria; which is isolated from special environments such as mangrove. Recently, mangrove ecosystem is becoming a hot spot for studies of bioactivities and the discovery of natural products. Many novel compounds discovered from the novel rare actinobacteria have been proven as potential new drugs in medical and pharmaceutical industries such as antibiotics, antimicrobials, antibacterials, anticancer, and antifungals. This review article highlights the latest studies on the discovery of natural compounds from the novel mangrove rare actinobacteria and provides insight on the impact of these findings.
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Affiliation(s)
- Adzzie-Shazleen Azman
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Sunway Campus Selangor, Malaysia
| | - Iekhsan Othman
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Sunway Campus Selangor, Malaysia
| | - Saraswati S Velu
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Sunway Campus Selangor, Malaysia
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Faculty of Science, Institute of Biological Sciences, University of Malaya Kuala Lumpur, Malaysia
| | - Learn-Han Lee
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Sunway Campus Selangor, Malaysia
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24
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Sakata J, Ando Y, Ohmori K, Suzuki K. Synthetic Study on Naphthospironone A: Construction of Benzobicyclo[3.2.1]octene Skeleton with Oxaspirocycle. Org Lett 2015. [PMID: 26225897 DOI: 10.1021/acs.orglett.5b01732] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In connection with the total synthesis of naphthospironone A, a model study has revealed a promising approach to construct a benzobicyclo[3.2.1]octene skeleton possessing an oxaspirocycle by employing an intramolecular aldol cyclization.
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Affiliation(s)
- Juri Sakata
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Yoshio Ando
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Ken Ohmori
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Keisuke Suzuki
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
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25
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Huang HQ, Xing SS, Yuan WD, Wang Y, Liu M, Sun QG, Lin XZ, Bao SX. Nocardiopsis mangrovei sp. nov., isolated from mangrove sediment. Antonie van Leeuwenhoek 2015; 107:1541-6. [PMID: 25969384 DOI: 10.1007/s10482-015-0447-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 04/03/2015] [Indexed: 11/25/2022]
Abstract
Two Gram-positive actinobacterial strains, designated HA11166(T) and HA12420, were isolated from mangrove sediments in Hainan, China. The bacterial cells grew with 0-9 % (w/v) NaCl, at 15-40 °C and pH 5.0-10.0, with the optimum growth at 1 % NaCl, 30-37 °C and pH 7.0. The organisms had a range of chemical and morphological properties consistent with their classification in the genus Nocardiopsis. Phylogenetic analysis of the 16S rRNA gene sequences indicated that strains HA11166(T) and HA12420 can be affiliated to the genus Nocardiopsis and most closely related to Nocardiopsis trehalosi VKM Ac-942(T) (with the similarity of 97.2 and 97.5 %, respectively). The value of DNA-DNA relatedness between type strain HA11166(T), selected as the representative strain, and N. trehalosi VKM Ac-942(T) was 38.8 %. The DNA G+C content of strain HA11166(T) was 73.7 %. On the basis of these phenotypic and genotypic data, strains HA11166(T) and HA12420 are proposed to represent a novel species of the genus Nocardiopsis, for which the name Nocardiopsis mangrovei sp. nov. is proposed. The type strain is HA11166(T) (=CGMCC 4.7119(T)=DSM 46665(T)).
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Affiliation(s)
- Hui-qin Huang
- Institute of Tropical Biosciences and Biotechnology, Key Laboratory of Biology and Genetic Resources of Tropical Crops of Ministry of Agriculture, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, Hainan, People's Republic of China
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26
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Yu H, Li WX, Wang JC, Yang Q, Wang HJ, Zhang CC, Ding SS, Li Y, Zhu HJ. Pestalotiopsin C, stereochemistry of a new caryophyllene from a fungus of Trichoderma sp. and its tautomerization characteristics in solution. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.063] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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27
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Bennur T, Kumar AR, Zinjarde S, Javdekar V. Nocardiopsis species: Incidence, ecological roles and adaptations. Microbiol Res 2015; 174:33-47. [PMID: 25946327 DOI: 10.1016/j.micres.2015.03.010] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 03/13/2015] [Accepted: 03/16/2015] [Indexed: 12/23/2022]
Abstract
Members of the genus Nocardiopsis are ecologically versatile and biotechnologically important. They produce a variety of bioactive compounds such as antimicrobial agents, anticancer substances, tumor inducers, toxins and immunomodulators. They also secrete novel extracellular enzymes such as amylases, chitinases, cellulases, β-glucanases, inulinases, xylanases and proteases. Nocardiopsis species are aerobic, Gram-positive, non-acid-fast, catalase-positive actinomycetes with nocardioform substrate mycelia and their aerial mycelia bear long chains of spores. Their DNA possesses high contents of guanine and cytosine. There is a marked variation in properties of the isolates obtained from different ecological niches and their products. An important feature of several species is their halophilic or halotolerant nature. They are associated with a variety of marine and terrestrial biological forms wherein they produce antibiotics and toxins that help their hosts in evading pathogens and predators. Two Nocardiopsis species, namely, N. dassonvillei and N. synnemataformans (among the thirty nine reported ones) are opportunistic human pathogens and cause mycetoma, suppurative infections and abscesses. Nocardiopsis species are present in some plants (as endophytes or surface microflora) and their rhizospheres. Here, they are reported to produce enzymes such as α-amylases and antifungal agents that are effective in warding-off plant pathogens. They are prevalent as free-living entities in terrestrial locales, indoor locations, marine ecosystems and hypersaline habitats on account of their salt-, alkali- and desiccation-resistant behavior. In such natural locations, Nocardiopsis species mainly help in recycling organic compounds. Survival under these diverse conditions is mediated by the production of extracellular enzymes, antibiotics, surfactants, and the accumulation of compatible solutes. The accommodative genomic features of Nocardiopsis species support their existence under the diverse conditions where they prevail.
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Affiliation(s)
- Tahsin Bennur
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune 411007, India
| | - Ameeta Ravi Kumar
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune 411007, India
| | - Smita Zinjarde
- Institute of Bioinformatics and Biotechnology, Savitribai Phule Pune University, Pune 411007, India.
| | - Vaishali Javdekar
- Department of Biotechnology, Abasaheb Garware College, Pune 411004, India.
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28
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Liu T, Zhang S, Zhu J, Pan H, Bai J, Li Z, Guan L, Liu G, Yuan C, Wu X, Hua H. Two new amides from a halotolerant fungus, Myrothecium sp. GS-17. J Antibiot (Tokyo) 2014; 68:267-70. [PMID: 25269461 PMCID: PMC4418385 DOI: 10.1038/ja.2014.136] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Revised: 08/30/2014] [Accepted: 09/07/2014] [Indexed: 11/28/2022]
Abstract
Two new amides, named N-acetyl-2,4,10,17-tetrahydroxyheptadecylamine (1) and N-acetyl-3,5,11,18-tetrahydroxyoctadecyl-2-amine (2), were isolated from a halotolerant fungus, Myrothecium sp. GS-17. Their structures were identified on the basis of spectroscopic characteristics. The cancer cell cytotoxicities of two compounds were evaluated, and compound 2 exhibited weak cytotoxicity in HL-60 cell line.
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Affiliation(s)
- Tao Liu
- Department of Natural Products Chemistry, School of Pharmacy, China Medical University, Shenyang, China
| | - Songya Zhang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Jing Zhu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, China
| | - Huaqi Pan
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Jiao Bai
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Zhanlin Li
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Liping Guan
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Guyue Liu
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, China
| | - Chunmao Yuan
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
| | - Xin Wu
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang, China
| | - Huiming Hua
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, China
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Ye Y, Li XQ, Tang CP, Yao S. Natural products chemistry research 2010's progress in China. Chin J Nat Med 2013; 10:1-13. [PMID: 23302521 DOI: 10.1016/s1875-5364(12)60001-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2011] [Indexed: 11/18/2022]
Abstract
This article reviews the progresses made by Chinese scientists in the field of natural products chemistry in 2010. Selected compounds with unique structural features and/or promising bioactivities were described herein on the basis of structural types.
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Affiliation(s)
- Yang Ye
- State Key Laboratory of Drug Research & Department of Natural Products Chemistry, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203.
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30
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Comparative genomic analysis of the genus Nocardiopsis provides new insights into its genetic mechanisms of environmental adaptability. PLoS One 2013; 8:e61528. [PMID: 23626695 PMCID: PMC3634020 DOI: 10.1371/journal.pone.0061528] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 03/12/2013] [Indexed: 12/04/2022] Open
Abstract
The genus Nocardiopsis, a widespread group in phylum Actinobacteria, has received much attention owing to its ecological versatility, pathogenicity, and ability to produce a rich array of bioactive metabolites. Its high environmental adaptability might be attributable to its genome dynamics, which can be estimated through comparative genomic analysis targeting microorganisms with close phylogenetic relationships but different phenotypes. To shed light on speciation, gene content evolution, and environmental adaptation in these unique actinobacteria, we sequenced draft genomes for 16 representative species of the genus and compared them with that of the type species N. dassonvillei subsp. dassonvillei DSM 43111T. The core genome of 1,993 orthologous and paralogous gene clusters was identified, and the pan-genomic reservoir was found not only to accommodate more than 22,000 genes, but also to be open. The top ten paralogous genes in terms of copy number could be referred to three functional categories: transcription regulators, transporters, and synthases related to bioactive metabolites. Based on phylogenomic reconstruction, we inferred past evolutionary events, such as gene gains and losses, and identified a list of clade-specific genes implicated in environmental adaptation. These results provided insights into the genetic causes of environmental adaptability in this cosmopolitan actinobacterial group and the contributions made by its inherent features, including genome dynamics and the constituents of core and accessory proteins.
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Li QM, Ren J, Zhou BD, Bai B, Liu XC, Wen ML, Zhu HJ. Determining the absolute configuration of benzopyrenomycin by optical rotation, electronic circular dichroism, and population analysis of different conformations via DFT methods and experiments. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.01.082] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Tian SZ, Pu X, Luo G, Zhao LX, Xu LH, Li WJ, Luo Y. Isolation and characterization of new p-Terphenyls with antifungal, antibacterial, and antioxidant activities from halophilic actinomycete Nocardiopsis gilva YIM 90087. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:3006-3012. [PMID: 23441911 DOI: 10.1021/jf400718w] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A new p-terphenyl 1 and a novel p-terphenyl derivative 3 bearing a benzothiazole moiety were isolated from halophilic actinomycete Nocardiopsis gilva YIM 90087, along with known p-terphenyl 2, antibiotic novobiocin 4, cyclodipeptides 5-13, and aromatic acids 14 and 15. Their structures were elucidated on the basis of the interpretation of spectral data and by comparison of the corresponding data with those reported previously. The p-terphenyl 1 showed antifungal activity against the three pathogenic fungi, including Fusarium avenaceum, Fusarium graminearum, and Fusarium culmorum, that caused Fusarium head blight with minimal inhibitory concentrations (MICs) of 8, 16, and 128 μg/mL, respectively. Compound 1 showed antifungal activity against Candida albicans with a MIC of 32 μg/mL and antibacterial activity against Bacillus subtilis with a MIC of 64 μg/mL. Novobiocin 4 showed antifungal activity against Pyricularia oryzae with a MIC of 16 μg/mL and antibacterial activity against B. subtilis with a MIC of 16 μg/mL and Staphylococcus aureus with a MIC of 64 μg/mL. The 1,1-diphenyl-2-picryl-hydrazyl assay suggested that 1, 3, and 4 exhibited 54.9% (2 mg/mL), 14.3% (4 mg/mL), and 47.7% (2 mg/mL) free radical scavenging activity, respectively. The positively charged 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid radical (ABTS(+•)) scavenging assay indicated that 1, 3, 4, and 8 exhibited 68.6% (1 mg/mL), 28.4% (2 mg/mL), 78.2% (0.5 mg/mL), and 54.6% (2 mg/mL) ABTS(+•) scavenging capacity, respectively. The superoxide anion radical scavenging assay suggested that 4 exhibited 77.9% superoxide anion radical scavenging capacity at 2 mg/mL. N. gilva YIM 90087 is a new resource for novobiocin 4.
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Affiliation(s)
- Shou-Zheng Tian
- Center for Natural Products Research, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People's Republic of China
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33
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Theoretical and experimental study of the absolute configuration of helical structure of (2R,3S)-Rubiginone A2 analog. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.11.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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34
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Ding ZG, Zhao JY, Li MG, Huang R, Li QM, Cui XL, Zhu HJ, Wen ML. Griseusins F and G, spiro-naphthoquinones from a tin mine tailings-derived alkalophilic Nocardiopsis species. JOURNAL OF NATURAL PRODUCTS 2012; 75:1994-1998. [PMID: 23095059 DOI: 10.1021/np3004936] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Griseusins F (1) and G (2), two 2a-hydro-8a-(2-oxopropyl)-substituted spiro-naphthoquinones with a previously undescribed C23 polyketide skeleton, were isolated from a Yunnan tin mine tailings-derived alkalophilic actinomycete, Nocardiopsis sp. YIM DT266. Their complete structure assignments with the absolute stereochemistry were elucidated by spectroscopic data, X-ray crystal diffraction, calculation of optical rotation, and CD spectroscopic analysis. Compounds 1 and 2 exhibited strong cytotoxicity (IC50 0.37-0.82 μM) and antibacterial activity (MIC 0.80-1.65 μg/mL) against Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) in vitro.
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Affiliation(s)
- Zhang-Gui Ding
- Key Laboratory for Microbial Resources, Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, Yunnan Institute of Microbiology, Yunnan University , Kunming, 650091, People's Republic of China
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Li J, Yang J, Zhu WY, He J, Tian XP, Xie Q, Zhang S, Li WJ. Nocardiopsis coralliicola sp. nov., isolated from the gorgonian coral, Menella praelonga. Int J Syst Evol Microbiol 2012; 62:1653-1658. [PMID: 21890725 DOI: 10.1099/ijs.0.035402-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An actinobacterial strain, SCSIO 10427T, was isolated from a gorgonian coral sample collected from Weizhou Island, Guangxi province, China, and its taxonomic position was investigated using a polyphasic approach. The organism was found to have a range of chemical and morphological properties consistent with its classification in the genus
Nocardiopsis
. Phylogenetic analysis indicated that 16S rRNA gene sequence similarity between strain SCSIO 10427T and type strains of other recognized members of the genus
Nocardiopsis
was lower than 98.4 %. Furthermore, phenotypic characteristics revealed that the strain differed from the currently recognized species of the genus
Nocardiopsis
. Therefore, strain SCSIO 10427T represents a novel species of the genus
Nocardiopsis
, for which the name Nocardiopsis coralliicola sp. nov. is proposed. The type strain is SCSIO 10427T ( = CCTCC AA 2011010T = DSM 45611T).
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Affiliation(s)
- Jie Li
- Key Laboratory of Marine Bio-resources Sustainable Utilization CAS, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, PR China
| | - Jian Yang
- Key Laboratory of Marine Bio-resources Sustainable Utilization CAS, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, PR China
| | - Wen-Yong Zhu
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
| | - Jie He
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
| | - Xin-Peng Tian
- Key Laboratory of Marine Bio-resources Sustainable Utilization CAS, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, PR China
| | - Qiong Xie
- State Key Lab of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, PR China
| | - Si Zhang
- Key Laboratory of Marine Bio-resources Sustainable Utilization CAS, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, PR China
| | - Wen-Jun Li
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education and Laboratory for Conservation and Utilization of Bio-Resources, Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, PR China
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Bai B, Shen L, Ren J, Zhu HJ. Chiral Biscarboline N,N′-Dioxide Derivatives: Highly Enantioselective Addition of Allyltrichlorosilane to Aldehydes. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100592] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Alkaliphilic bacteria: applications in industrial biotechnology. J Ind Microbiol Biotechnol 2011; 38:769-90. [DOI: 10.1007/s10295-011-0968-x] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Accepted: 03/26/2011] [Indexed: 11/26/2022]
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Li G, Liu F, Shen L, Zhu H, Zhang K. Stereumins H-J, stereumane-type sesquiterpenes from the fungus Stereum sp. JOURNAL OF NATURAL PRODUCTS 2011; 74:296-299. [PMID: 21210711 DOI: 10.1021/np100813f] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Stereumins H (1), I (2), and J (3), three sesquiterpenes possessing a novel stereumane-type backbone, were isolated from an extract of culture broth of the Basidiomycete Stereum sp. CCTCC AF 207024. The complete structural assignments including the absolute configurations are reported by using X-ray studies and density functional theory at the B3LYP/aug-cc-pVDZ//B3LYP/6-31G(d) level.
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Affiliation(s)
- Guohong Li
- Key Laboratory for Conservation and Utilization of Bio-resource, Yunnan University, Kunming, 650091, Yunnan, People's Republic of China
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Ding ZG, Li MG, Ren J, Zhao JY, Huang R, Wang QZ, Cui XL, Zhu HJ, Wen ML. Phenazinolins A–E: novel diphenazines from a tin mine tailings-derived Streptomyces species. Org Biomol Chem 2011; 9:2771-6. [DOI: 10.1039/c1ob05044c] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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