151
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Bioprospecting of Novel and Bioactive Compounds from Marine Actinomycetes Isolated from South China Sea Sediments. Curr Microbiol 2017; 75:142-149. [PMID: 28918535 DOI: 10.1007/s00284-017-1358-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 09/12/2017] [Indexed: 02/07/2023]
Abstract
Marine actinomycetes are less investigated compared to terrestrial strains as potential sources of natural products. To date, few investigations have been performed on culturable actinomycetes associated with South China Sea sediments. In the present study, twenty-eight actinomycetes were recovered from South China Sea sediments after dereplication by traditional culture-dependent method. The 16S rRNA gene sequences analyses revealed that these strains related to five families and seven genera. Twelve representative strains possessed at least one of the biosynthetic genes coding for polyketide synthase I, II, and nonribosomal peptide synthetase. Four strains had anti-Mycobacterium phlei activities and five strains had activities against methicillin-resistant Staphylococcus aureus. 10 L-scale fermentation of strains Salinispora sp. NHF45, Nocardiopsis sp. NHF48, and Streptomyces sp. NHF86 were carried out for novel and bioactive compounds discovery. Finally, we obtained a novel α-pyrone compound from marine Nocardiopsis sp. NHF48, an analogue of paulomenol from marine Streptomyces sp. NHF86 and a new source of rifamycin B, produced by Salinispora sp. NHF45. The present study concluded that marine actinomycetes, which we isolated from South China Sea sediments, will be a suitable source for the development of novel and bioactive compounds.
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152
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Cumsille A, Undabarrena A, González V, Claverías F, Rojas C, Cámara B. Biodiversity of Actinobacteria from the South Pacific and the Assessment of Streptomyces Chemical Diversity with Metabolic Profiling. Mar Drugs 2017; 15:E286. [PMID: 28892017 PMCID: PMC5618425 DOI: 10.3390/md15090286] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/29/2017] [Accepted: 08/31/2017] [Indexed: 01/21/2023] Open
Abstract
Recently, bioprospecting in underexplored habitats has gained enhanced focus, since new taxa of marine actinobacteria can be found, and thus possible new metabolites. Actinobacteria are in the foreground due to their versatile production of secondary metabolites that present various biological activities, such as antibacterials, antitumorals and antifungals. Chilean marine ecosystems remain largely unexplored and may represent an important source for the discovery of bioactive compounds. Various culture conditions to enrich the growth of this phylum were used and 232 bacterial strains were isolated. Comparative analysis of the 16S rRNA gene sequences led to identifying genetic affiliations of 32 genera, belonging to 20 families. This study shows a remarkable culturable diversity of actinobacteria, associated to marine environments along Chile. Furthermore, 30 streptomycete strains were studied to establish their antibacterial activities against five model strains, Staphylococcus aureus, Listeria monocytogenes, Salmonella enterica, Escherichia coli and Pseudomonas aeruginosa, demonstrating abilities to inhibit bacterial growth of Gram-positive bacteria. To gain insight into their metabolic profiles, crude extracts were submitted to liquid chromatography-high resolution mass spectrometry (LC-HRMS) analysis to assess the selection of streptomycete strains with potentials of producing novel bioactive metabolites. The combined approach allowed for the identification of three streptomycete strains to pursue further investigations. Our Chilean marine actinobacterial culture collection represents an important resource for the bioprospection of novel marine actinomycetes and its metabolites, evidencing their potential as producers of natural bioproducts.
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Affiliation(s)
- Andrés Cumsille
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, Valparaíso 2340000, Chile.
| | - Agustina Undabarrena
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, Valparaíso 2340000, Chile.
| | - Valentina González
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, Valparaíso 2340000, Chile.
| | - Fernanda Claverías
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, Valparaíso 2340000, Chile.
| | - Claudia Rojas
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, Valparaíso 2340000, Chile.
| | - Beatriz Cámara
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa María, Valparaíso 2340000, Chile.
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153
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Jose PA, Jha B. Intertidal marine sediment harbours Actinobacteria with promising bioactive and biosynthetic potential. Sci Rep 2017; 7:10041. [PMID: 28855551 PMCID: PMC5577230 DOI: 10.1038/s41598-017-09672-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 07/28/2017] [Indexed: 11/29/2022] Open
Abstract
Actinobacteria are the major source of bioactive natural products that find their value in research and drug discovery programmes. Antimicrobial resistance and the resulting high demand for novel antibiotics underscore the need for exploring novel sources of these bacteria endowed with biosynthetic potential. Intertidal ecosystems endure regular periods of immersion and emersion, and represent an untapped source of Actinobacteria. In this study, we studied the diversity and biosynthetic potential of cultivable Actinobacteria from intertidal sediments of Diu Island in the Arabian Sea. A total of 148 Actinobacteria were selectively isolated using a stamping method with eight isolation media. Isolates were grouped into OTUs based on their 16S rRNA gene sequence, and categorized within actinobacterial families such as Glycomycetaceae, Micromonosporaceae, Nocardiaceae, Nocardiopsaceae, Pseudonocardiaceae, Streptomycetaceae, and Thermomonosporaceae. The biosynthetic potential of the Actinobacteria, necessary for secondary metabolite biosynthesis, was screened and confirmed by extensive fingerprinting approaches based on genes coding for polyketide synthases and nonribosomal peptide synthetases. The observed biosynthetic potential was correlated with the antibacterial activity exhibited by these isolates in laboratory conditions. Ultimately, the results demonstrate that intertidal sediment is a rich source of diverse cultivable Actinobacteria with high potential to synthesize novel bioactive compounds in their genomes.
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Affiliation(s)
- Polpass Arul Jose
- Marine Biotechnology and Ecology Division, CSIR- Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar - 364002, Gujarat, India.
| | - Bhavanath Jha
- Marine Biotechnology and Ecology Division, CSIR- Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar - 364002, Gujarat, India. .,Academy of Scientific and Innovative Research (AcSIR), Council of Scientific and Industrial Research (CSIR), New Delhi, India.
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154
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Hussain A, Rather M, Shah A, Bhat Z, Shah A, Ahmad Z, Parvaiz Hassan Q. Antituberculotic activity of actinobacteria isolated from the rare habitats. Lett Appl Microbiol 2017; 65:256-264. [DOI: 10.1111/lam.12773] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 06/12/2017] [Accepted: 07/04/2017] [Indexed: 10/19/2022]
Affiliation(s)
- A. Hussain
- Microbial Biotechnology Division; CSIR-Indian Institute of Integrative Medicine; Srinagar India
- Academy of Scientific and Innovative Research; CSIR-Indian Institute of Integrative Medicine; Jammu Tawi India
| | - M.A. Rather
- Clinical Microbiology and PK/PD Division; CSIR-Indian Institute of Integrative Medicine; Srinagar India
| | - A.M. Shah
- Microbial Biotechnology Division; CSIR-Indian Institute of Integrative Medicine; Srinagar India
| | - Z.S. Bhat
- Clinical Microbiology and PK/PD Division; CSIR-Indian Institute of Integrative Medicine; Srinagar India
| | - A. Shah
- Microbial Biotechnology Division; CSIR-Indian Institute of Integrative Medicine; Srinagar India
| | - Z. Ahmad
- Clinical Microbiology and PK/PD Division; CSIR-Indian Institute of Integrative Medicine; Srinagar India
| | - Q. Parvaiz Hassan
- Microbial Biotechnology Division; CSIR-Indian Institute of Integrative Medicine; Srinagar India
- Academy of Scientific and Innovative Research; CSIR-Indian Institute of Integrative Medicine; Jammu Tawi India
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155
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Upregulation and Identification of Antibiotic Activity of a Marine-Derived Streptomyces sp. via Co-Cultures with Human Pathogens. Mar Drugs 2017; 15:md15080250. [PMID: 28800088 PMCID: PMC5577605 DOI: 10.3390/md15080250] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/31/2017] [Accepted: 08/02/2017] [Indexed: 02/04/2023] Open
Abstract
Marine natural product drug discovery has begun to play an important role in the treatment of disease, with several recently approved drugs. In addition, numerous microbial natural products have been discovered from members of the order Actinomycetales, particularly in the genus Streptomyces, due to their metabolic diversity for production of biologically active secondary metabolites. However, many secondary metabolites cannot be produced under laboratory conditions because growth conditions in flask culture differ from conditions in the natural environment. Various experimental conditions (e.g., mixed fermentation) have been attempted to increase yields of previously described metabolites, cause production of previously undetected metabolites, and increase antibiotic activity. Adult ascidians-also known as tunicates-are sessile marine invertebrates, making them vulnerable to predation and therefore are hypothesized to use host-associated bacteria that produce biologically active secondary metabolites for chemical defense. A marine-derived Streptomyces sp. strain PTY087I2 was isolated from a Panamanian tunicate and subsequently co-cultured with human pathogens including Bacillus subtilis, methicillin-sensitive Staphylococcus aureus (MSSA), methicillin-resistant Staphylococcus aureus (MRSA), and Pseudomonas aeruginosa, followed by extraction. Co-culture of Streptomyces sp. PTY087I2 with each of these human pathogens resulted in increased production of three antibiotics: granaticin, granatomycin D, and dihydrogranaticin B, as well as several analogues seen via molecular networking. In addition, co-cultures resulted in strongly enhanced biological activity against the Gram positive human pathogens used in these experiments. Expanded utilization of co-culture experiments to allow for competitive interactions may enhance metabolite production and further our understanding of these microbial interactions.
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156
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Lee S, Kim DC, Park JS, Son JY, Hak Sohn J, Liu L, Che Y, Oh H. Penicillospirone from a marine isolate of Penicillium sp. (SF-5292) with anti-inflammatory activity. Bioorg Med Chem Lett 2017; 27:3516-3520. [DOI: 10.1016/j.bmcl.2017.05.066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 05/20/2017] [Accepted: 05/22/2017] [Indexed: 11/17/2022]
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157
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Heravi MM, Zadsirjan V, Esfandyari M, Lashaki TB. Applications of sharpless asymmetric dihydroxylation in the total synthesis of natural products. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2017.07.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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158
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Protasov ES, Axenov-Gribanov DV, Rebets YV, Voytsekhovskaya IV, Tokovenko BT, Shatilina ZM, Luzhetskyy AN, Timofeyev MA. The diversity and antibiotic properties of actinobacteria associated with endemic deepwater amphipods of Lake Baikal. Antonie van Leeuwenhoek 2017; 110:1593-1611. [PMID: 28721507 DOI: 10.1007/s10482-017-0910-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 07/08/2017] [Indexed: 02/03/2023]
Abstract
The emergence of pathogenic bacteria resistant to antibiotics increases the need for discovery of new effective antimicrobials. Unique habitats such as marine deposits, wetlands and caves or unexplored biological communities are promising sources for the isolation of actinobacteria, which are among the major antibiotic producers. The present study aimed at examining cultivated actinobacteria strains associated with endemic Lake Baikal deepwater amphipods and estimating their antibiotic activity. We isolated 42 actinobacterial strains from crustaceans belonging to Ommatogammarus albinus and Ommatogammarus flavus. To our knowledge, this is the first report describing the isolation and initial characterization of representatives of Micromonospora and Pseudonocardia genera from Baikal deepwater invertebrates. Also, as expected, representatives of the genus Streptomyces were the dominant group among the isolated species. Some correlations could be observed between the number of actinobacterial isolates, the depth of sampling and the source of the strains. Nevertheless, >70% of isolated strains demonstrated antifungal activity. The dereplication analysis of extract of one of the isolated strains resulted in annotation of several known compounds that can help to explain the observed biological activities. The characteristics of ecological niche and lifestyle of deepwater amphipods suggests that the observed associations between crustaceans and isolated actinobacteria are not random and might represent long-term symbiotic interactions.
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Affiliation(s)
| | - Denis V Axenov-Gribanov
- Institute of Biology, Irkutsk State University, Irkutsk, Russia. .,Baikal Research Centre, Irkutsk, Russia.
| | - Yuriy V Rebets
- Helmholtz Institute for Pharmaceutical Research Saarland, Saarbrucken, Germany.,Pharmazeutische Biotechnologie, Universität des Saarlandes, Saarbrucken, Germany
| | | | - Bogdan T Tokovenko
- Helmholtz Institute for Pharmaceutical Research Saarland, Saarbrucken, Germany
| | - Zhanna M Shatilina
- Institute of Biology, Irkutsk State University, Irkutsk, Russia.,Baikal Research Centre, Irkutsk, Russia
| | - Andriy N Luzhetskyy
- Helmholtz Institute for Pharmaceutical Research Saarland, Saarbrucken, Germany.,Pharmazeutische Biotechnologie, Universität des Saarlandes, Saarbrucken, Germany
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159
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Cho KH, Sohn JH, Oh H. Isolation and structure determination of a new diketopiperazine dimer from marine-derived fungus Aspergillus sp. SF-5280. Nat Prod Res 2017; 32:214-221. [PMID: 28670919 DOI: 10.1080/14786419.2017.1346642] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
A new diketopiperazine dimer designated as SF5280-415 (1) was isolated from an EtOAc extract of the marine-derived fungus Aspergillus sp. SF-5280 by various chromatographic methods. The structure of 1 was mainly determined by analysis of the NMR spectroscopic data and MS data, along with Marfey's method. This compound is a new diastereoisomer of known bispyrrolidinoindoline diketopiperazine alkaloid WIN 64745, which possesses unique architecture biosynthetically derived from an indole oxidation reaction of tryptophan.
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Affiliation(s)
- Kwang-Ho Cho
- a College of Pharmacy , Wonkwang University , Iksan , Republic of Korea
| | - Jae Hak Sohn
- b College of Medical and Life Sciences , Silla University , Busan , Republic of Korea
| | - Hyuncheol Oh
- a College of Pharmacy , Wonkwang University , Iksan , Republic of Korea
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160
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Cho KH, Sohn JH, Oh H. Isolation and structure determination of a new diketopiperazine dimer from marine-derived fungus Aspergillus sp. SF-5280. Nat Prod Res 2017. [DOI: 10.1080/14786419.2017.1346642 a31773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
Affiliation(s)
- Kwang-Ho Cho
- College of Pharmacy, Wonkwang University, Iksan, Republic of Korea
| | - Jae Hak Sohn
- College of Medical and Life Sciences, Silla University, Busan, Republic of Korea
| | - Hyuncheol Oh
- College of Pharmacy, Wonkwang University, Iksan, Republic of Korea
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161
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Le TC, Yim CY, Park S, Katila N, Yang I, Song MC, Yoon YJ, Choi DY, Choi H, Nam SJ, Fenical W. Lodopyridones B and C from a marine sediment-derived bacterium Saccharomonospora sp. Bioorg Med Chem Lett 2017; 27:3123-3126. [DOI: 10.1016/j.bmcl.2017.05.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 05/09/2017] [Accepted: 05/11/2017] [Indexed: 11/30/2022]
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162
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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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163
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Kim J, Shin D, Kim SH, Park W, Shin Y, Kim WK, Lee SK, Oh KB, Shin J, Oh DC. Borrelidins C-E: New Antibacterial Macrolides from a Saltern-Derived Halophilic Nocardiopsis sp. Mar Drugs 2017; 15:md15060166. [PMID: 28587270 PMCID: PMC5484116 DOI: 10.3390/md15060166] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 05/25/2017] [Accepted: 06/02/2017] [Indexed: 11/20/2022] Open
Abstract
Chemical investigation of a halophilic actinomycete strain belonging to the genus Nocardiopsis inhabiting a hypersaline saltern led to the discovery of new 18-membered macrolides with nitrile functionality, borrelidins C–E (1–3), along with a previously reported borrelidin (4). The planar structures of borrelidins C–E, which are new members of the rare borrelidin class of antibiotics, were elucidated by NMR, mass, IR, and UV spectroscopic analyses. The configurations of borrelidines C–E were determined by the interpretation of ROESY NMR spectra, J-based configuration analysis, a modified Mosher’s method, and CD spectroscopic analysis. Borrelidins C and D displayed inhibitory activity, particularly against the Gram-negative pathogen Salmonella enterica, and moderate cytotoxicity against the SNU638 and K562 carcinoma cell lines.
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Affiliation(s)
- Jungwoo Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Daniel Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Seong-Hwan Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Wanki Park
- artment of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea.
| | - Yoonho Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Won Kyung Kim
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Ki-Bong Oh
- artment of Agricultural Biotechnology, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea.
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
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164
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Kamjam M, Sivalingam P, Deng Z, Hong K. Deep Sea Actinomycetes and Their Secondary Metabolites. Front Microbiol 2017; 8:760. [PMID: 28507537 PMCID: PMC5410581 DOI: 10.3389/fmicb.2017.00760] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 04/12/2017] [Indexed: 12/28/2022] Open
Abstract
Deep sea is a unique and extreme environment. It is a hot spot for hunting marine actinomycetes resources and secondary metabolites. The novel deep sea actinomycete species reported from 2006 to 2016 including 21 species under 13 genera with the maximum number from Microbacterium, followed by Dermacoccus, Streptomyces and Verrucosispora, and one novel species for the other 9 genera. Eight genera of actinomycetes were reported to produce secondary metabolites, among which Streptomyces is the richest producer. Most of the compounds produced by the deep sea actinomycetes presented antimicrobial and anti-cancer cell activities. Gene clusters related to biosynthesis of desotamide, heronamide, and lobophorin have been identified from the deep sea derived Streptomyces.
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Affiliation(s)
- Manita Kamjam
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical SciencesWuhan, China
| | - Periyasamy Sivalingam
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical SciencesWuhan, China
| | - Zinxin Deng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical SciencesWuhan, China
| | - Kui Hong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical SciencesWuhan, China
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165
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Eliwa EM, Abdel-Razek AS, Frese M, Wibberg D, Halawa AH, El-Agrody AM, Bedair AH, Kalinowski J, Sewald N, Shaaban M. New bioactive compounds from the marine-derived actinomycete Nocardiopsis lucentensis sp. ASMR2. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/znb-2016-0250] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In the search for new bioactive compounds from extremophilic actinomycetes, a new marine actinomycete strain, Nocardiopsis lucentensis sp. ASMR2 has been isolated and taxonomically identified from marine plants collected in the Red Sea at Hurghada coasts. A large-scale fermentation of the strain on modified rice solid medium was performed, followed by work-up and purification of the obtained extract using a series of chromatographic purifications, delivering the novel butenolide system 3′-hydroxy-N-(2-oxo-2,5-dihydrofuran-4-yl)propionamide (1a) along with the naturally new 4-methoxy-2H-isoquinolin-1-one (2). Furthermore, eight known bioactive compounds are also reported, namely, indole-3-carboxylic acid, indole-3-acetic acid, indole-3-acetic acid methyl ester, furan-2,5-dimethanol, tyrosol, glycerol linoleate, cyclo-(Tyr, Pro), and adenosine. The chemical structures of the new compounds (1a, 2) were confirmed by extensive one- and two-dimensional (1D and 2D) nuclear magnetic resonance (NMR) spectroscopy, electron ionization high resolution (EI-HR) mass spectrometry, and by comparison with literature data. The antimicrobial activity of the strain extract, as well as of compounds 1a and 2, were studied using a panel of pathogenic microorganisms. The in vitro cytotoxicity of the bacterial extract and compounds 1a and 2 were studied against the human cervix carcinoma cell line (KB-3-1) and its multidrug-resistant subclone (KB-V1).
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Affiliation(s)
- Essam M. Eliwa
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
- Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City-Cairo 11884, Egypt
| | - Ahmed S. Abdel-Razek
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
- Microbial Chemistry Department, Division of Genetic Engineering and Biotechnology Research, National Research Centre, El-Behoos St. 33, Dokki-Cairo 12622, Egypt
| | - Marcel Frese
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
| | - Daniel Wibberg
- Centrum für Biotechnologie (CeBiTec), Bielefeld University, Universitätsstraße 27, D-33615 Bielefeld, Germany
| | - Ahmed H. Halawa
- Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City-Cairo 11884, Egypt
| | - Ahmed M. El-Agrody
- Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City-Cairo 11884, Egypt
| | - Ahmed H. Bedair
- Chemistry Department, Faculty of Science, Al-Azhar University, Nasr City-Cairo 11884, Egypt
| | - Jörn Kalinowski
- Centrum für Biotechnologie (CeBiTec), Bielefeld University, Universitätsstraße 27, D-33615 Bielefeld, Germany
| | - Norbert Sewald
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
| | - Mohamed Shaaban
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, D-33501 Bielefeld, Germany
- Chemistry of Natural Compounds Department, Division of Pharmaceutical Industries, National Research Centre, El-Behoos St. 33, Dokki, Cairo 12622, Egypt , Tel.: +202-270-1728/int-2609. Fax: +202-333-70931
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166
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Asolkar RN, Singh A, Jensen PR, Aalbersberg W, Carté BK, Feussner KD, Subramani R, DiPasquale A, Rheingold AL, Fenical W. Marinocyanins, cytotoxic bromo-phenazinone meroterpenoids from a marine bacterium from the streptomycete clade MAR4. Tetrahedron 2017; 73:2234-2241. [PMID: 28814819 PMCID: PMC5555602 DOI: 10.1016/j.tet.2017.03.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Six cytotoxic and antimicrobial metabolites of a new bromo-phenazinone class, the marinocyanins A-F (1-6), were isolated together with the known bacterial metabolites 2-bromo-1-hydroxyphenazine (7), lavanducyanin (8, WS-9659A) and its chlorinated analog WS-9659B (9). These metabolites were purified by bioassay-guided fractionation of the extracts of our MAR4 marine actinomycete strains CNS-284 and CNY-960. The structures of the new compounds were determined by detailed spectroscopic methods and marinocyanin A (1) was confirmed by crystallographic methods. The marinocyanins represent the first bromo-phenazinones with an N-isoprenoid substituent in the skeleton. Marinocyanins A-F show strong to weak cytotoxicity against HCT-116 human colon carcinoma and possess modest antimicrobial activities against Staphylococcus aureus and amphotericin-resistant Candida albicans.
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Affiliation(s)
- Ratnakar N. Asolkar
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, 92093-0204, USA
| | - Ahilya Singh
- Institute of Applied Sciences, Faculty of Science, Technology and Environment, The University of the South Pacific, Laucala Campus, Private Mail Bag, Suva, Fiji
| | - Paul R. Jensen
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, 92093-0204, USA
| | - William Aalbersberg
- Institute of Applied Sciences, Faculty of Science, Technology and Environment, The University of the South Pacific, Laucala Campus, Private Mail Bag, Suva, Fiji
| | - Brad K. Carté
- Institute of Applied Sciences, Faculty of Science, Technology and Environment, The University of the South Pacific, Laucala Campus, Private Mail Bag, Suva, Fiji
| | - Klaus-D. Feussner
- Institute of Applied Sciences, Faculty of Science, Technology and Environment, The University of the South Pacific, Laucala Campus, Private Mail Bag, Suva, Fiji
| | - Ramesh Subramani
- Department of Biology, College of Engineering, Science & Technology (CEST), School of Science, Dept. of Biology, Fiji National University, Natabua Campus, Lautoka, Fiji
| | - Antonio DiPasquale
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - Arnold L. Rheingold
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, USA
| | - William Fenical
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, 92093-0204, USA
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167
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Liao L, Bae SY, Won TH, You M, Kim SH, Oh DC, Lee SK, Oh KB, Shin J. Asperphenins A and B, Lipopeptidyl Benzophenones from a Marine-Derived Aspergillus sp. Fungus. Org Lett 2017; 19:2066-2069. [DOI: 10.1021/acs.orglett.7b00661] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lijuan Liao
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Song Yi Bae
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Tae Hyung Won
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Minjung You
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Seong-Hwan Kim
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Dong-Chan Oh
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Sang Kook Lee
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
| | - Ki-Bong Oh
- Department of Agricultural Biotechnology, College of Agriculture & Life Science, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-921, Korea
| | - Jongheon Shin
- Natural
Products Research Institute, College of Pharmacy, Seoul National University, San 56-1, Sillim, Gwanak, Seoul 151-742, Korea
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168
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Bioactive Metabolites from the Deep Subseafloor Fungus Oidiodendron griseum UBOCC-A-114129. Mar Drugs 2017; 15:md15040111. [PMID: 28387732 PMCID: PMC5408257 DOI: 10.3390/md15040111] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 03/24/2017] [Accepted: 03/28/2017] [Indexed: 11/17/2022] Open
Abstract
Four bioactive compounds have been isolated from the fungus Oidiodendron griseum UBOCC-A-114129 cultivated from deep subsurface sediment. They were structurally characterized using a combination of LC–MS/MS and NMR analyses as fuscin and its derivatives (dihydrofuscin, dihydrosecofuscin, and secofuscin) and identified as polyketides. Albeit those compounds were already obtained from terrestrial fungi, this is the first report of their production by an Oidiodendron species and by the deepest subseafloor isolate ever studied for biological activities. We report a weak antibacterial activity of dihydrosecofuscin and secofuscin mainly directed against Gram-positive bacteria (Minimum Inhibitory Concentration (MIC) equal to Minimum Bactericidal Concentration (MBC), in the range of 100 μg/mL). The activity on various protein kinases was also analyzed and revealed a significant inhibition of CDC2-like kinase-1 (CLK1) by dihysecofuscin.
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169
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Neoantimycins A and B, Two Unusual Benzamido Nine-Membered Dilactones from Marine-Derived Streptomyces antibioticus H12-15. Molecules 2017; 22:molecules22040557. [PMID: 28358337 PMCID: PMC6154602 DOI: 10.3390/molecules22040557] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 03/25/2017] [Accepted: 03/27/2017] [Indexed: 11/17/2022] Open
Abstract
An actinomycete strain (H12-15) isolated from a sea sediment in a mangrove district was identified as Streptomycesantibioticus on the basis of 16S rDNA gene sequence analysis as well as the investigation of its morphological, physiological, and biochemical characteristics. Two novel benzamido nonacyclic dilactones, namely neoantimycins A (1) and B (2), together with the known antimycins A1ab (3a,b), A2a (4), and A₉ (5), were isolated from the culture broth of this strain. Compounds 1 and 2 are the first natural modified ATNs with an unusual benzamide unit. The structures of these new compounds, including their absolute configuration, were established on the basis of HRMS, NMR spectroscopic data, and quantum chemical ECD calculations. Their cytotoxicities against human breast adenocarcinoma cell line MCF-7, the human glioblastoma cell line SF-268, and the human lung cancer cell line NCI-H460 were also tested. All compounds exhibited mild cytotoxic activity. However, Compounds 1 and 2 showed no activity against C. albicans at the test concentration of 1 mg/mL via paper disc diffusion, while the known antimycins showed obvious antifungal activity.
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170
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Gallagher KA, Wanger G, Henderson J, Llorente M, Hughes CC, Jensen PR. Ecological implications of hypoxia-triggered shifts in secondary metabolism. Environ Microbiol 2017; 19:2182-2191. [PMID: 28205416 DOI: 10.1111/1462-2920.13700] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 02/10/2017] [Indexed: 11/28/2022]
Abstract
Members of the actinomycete genus Streptomyces are non-motile, filamentous bacteria that are well-known for the production of biomedically relevant secondary metabolites. While considered obligate aerobes, little is known about how these bacteria respond to periods of reduced oxygen availability in their natural habitats, which include soils and ocean sediments. Here, we provide evidence that the marine streptomycete strain CNQ-525 can reduce MnO2 via a diffusible mechanism. We investigated the effects of hypoxia on secondary metabolite production and observed a shift away from the antibiotic napyradiomycin towards 8-amino-flaviolin, an intermediate in the napyradiomycin biosynthetic pathway. We purified 8-amino-flaviolin and demonstrated that it is reversibly redox-active (midpoint potential -474.5 mV), indicating that it has the potential to function as an endogenous extracellular electron shuttle. This study provides evidence that environmentally triggered changes in secondary metabolite production may provide clues to the ecological functions of specific compounds, and that Gram-positive bacteria considered to be obligate aerobes may play previously unrecognized roles in biogeochemical cycling through mechanisms that include extracellular electron shuttling.
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Affiliation(s)
- Kelley A Gallagher
- Scripps Institution of Oceanography, Center for Marine Biotechnology and Biomedicine, University of California San Diego, La Jolla, CA, USA
| | - Greg Wanger
- Department of Earth Sciences, University of Southern California, Los Angeles, CA, USA
| | - Jane Henderson
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, USA
| | - Mark Llorente
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA, USA
| | - Chambers C Hughes
- Scripps Institution of Oceanography, Center for Marine Biotechnology and Biomedicine, University of California San Diego, La Jolla, CA, USA
| | - Paul R Jensen
- Scripps Institution of Oceanography, Center for Marine Biotechnology and Biomedicine, University of California San Diego, La Jolla, CA, USA
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171
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Bae M, Park SH, Kwon Y, Lee SK, Shin J, Nam JW, Oh DC. QM-HiFSA-Aided Structure Determination of Succinilenes A-D, New Triene Polyols from a Marine-Derived Streptomyces sp. Mar Drugs 2017; 15:E38. [PMID: 28216577 PMCID: PMC5334618 DOI: 10.3390/md15020038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Revised: 02/02/2017] [Accepted: 02/08/2017] [Indexed: 02/01/2023] Open
Abstract
Based on profiles of secondary metabolites produced by marine bacteria obtained using LC/MS, succinilenes A-D (1-4), new triene polyols, were discovered from a culture of a Streptomyces strain SAK1, which was collected in the southern area of Jeju Island, Republic of Korea. The gross structures of 1-4 were primarily determined through analysis of NMR spectra. The double bond geometries of the succinilenes, which could not be established from conventional ¹H NMR spectra because of the highly overlapped olefinic signals, were successfully deciphered using the recently developed quantum-mechanics-driven ¹H iterative full spin analysis (QM-HiFSA). Succinilenes A-C (1-3) displayed inhibitory effects against lipopolysaccharide (LPS)-induced nitric oxide (NO) production, indicating their anti-inflammatory significance. These three compounds (1-3) commonly bear a succinic acid moiety, although succinilene D (4), which did not inhibit NO production, does not have this moiety in its structure. The absolute configurations of succinilenes A-D (1-4) were established through J-based configuration analysis, the modified Mosher's method following methanolysis, and CD spectral analysis.
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Affiliation(s)
- Munhyung Bae
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - So Hyun Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Yun Kwon
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Sang Kook Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Jongheon Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Joo-Won Nam
- College of Pharmacy, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea.
- Department of Medicinal Chemistry & Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, USA.
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea.
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172
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KOYAMA S, NISHI S, NAGANO Y, TAME A, UEMATSU K, NOGI Y, HATADA Y, TSUBOUCHI T. Electrical Retrieval of Living Streptomycete Spores Using a Potential-Controlled ITO Electrode. ELECTROCHEMISTRY 2017. [DOI: 10.5796/electrochemistry.85.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | - Shinro NISHI
- Research and Development Center for Marine Biosciences, Japan Agency for Marine-Earth Science and Technology
| | - Yuriko NAGANO
- Department of Marine Biodiversity Research, Japan Agency for Marine-Earth Science and Technology
| | - Akihiro TAME
- Department of Marine and Science, Marine Works Japan, Ltd
| | | | - Yuichi NOGI
- Research and Development Center for Marine Biosciences, Japan Agency for Marine-Earth Science and Technology
| | - Yuji HATADA
- Department of Life Science and Green Chemistry, Saitama Institute of Technology
| | - Taishi TSUBOUCHI
- Research and Development Center for Marine Biosciences, Japan Agency for Marine-Earth Science and Technology
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173
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Hassan SSU, Anjum K, Abbas SQ, Akhter N, Shagufta BI, Shah SAA, Tasneem U. Emerging biopharmaceuticals from marine actinobacteria. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 49:34-47. [PMID: 27898308 DOI: 10.1016/j.etap.2016.11.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 11/11/2016] [Accepted: 11/20/2016] [Indexed: 05/10/2023]
Abstract
Actinobacteria are quotidian microorganisms in the marine world, playing a crucial ecological role in the recycling of refractory biomaterials and producing novel secondary metabolites with pharmaceutical applications. Actinobacteria have been isolated from the huge area of marine organisms including sponges, tunicates, corals, mollusks, crabs, mangroves and seaweeds. Natural products investigation of the marine actinobacteria revealed that they can synthesize numerous natural products including alkaloids, polyketides, peptides, isoprenoids, phenazines, sterols, and others. These natural products have a potential to provide future drugs against crucial diseases like cancer, HIV, microbial and protozoal infections and severe inflammations. Therefore, marine actinobacteria portray as a pivotal resource for marine drugs. It is an upcoming field of research to probe a novel and pharmaceutically important secondary metabolites from marine actinobacteria. In this review, we attempt to summarize the present knowledge on the diversity, chemistry and mechanism of action of marine actinobacteria-derived secondary metabolites from 2007 to 2016.
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Affiliation(s)
| | - Komal Anjum
- Ocean College, Zhejiang University, Hangzhou 310058, China
| | - Syed Qamar Abbas
- Faculty of Pharmacy, Gomal University D.I. Khan, K.P.K 29050, Pakistan
| | - Najeeb Akhter
- Ocean College, Zhejiang University, Hangzhou 310058, China
| | - Bibi Ibtesam Shagufta
- Department of Zoology, Kohat University of Science and Technology (KUST), K.P.K 26000, Pakistan
| | | | - Umber Tasneem
- Department of Microbiology, Kohat University of Science and Technology (KUST), K.P.K 26000, Pakistan
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174
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Das S, Goswami RK. Total synthesis of marine natural products separacenes A and B. Org Biomol Chem 2017; 15:4842-4850. [DOI: 10.1039/c7ob00345e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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175
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Komaki H, Hosoyama A, Ichikawa N, Igarashi Y. Draft genome sequence of a sponge-derived Brevibacillus sp. TP-B0800, a producer of ulbactins with tumor cell migration inhibitory activity. GENE REPORTS 2016. [DOI: 10.1016/j.genrep.2016.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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176
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AN X, FENG BM, CHEN G, CHEN SF, WANG HF, PEI YH. Isolation and identification of two new compounds from marine-derived fungus Acremonium fusidioides RZ01. Chin J Nat Med 2016; 14:934-938. [DOI: 10.1016/s1875-5364(17)30019-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Indexed: 10/20/2022]
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177
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Schorn MA, Alanjary MM, Aguinaldo K, Korobeynikov A, Podell S, Patin N, Lincecum T, Jensen PR, Ziemert N, Moore BS. Sequencing rare marine actinomycete genomes reveals high density of unique natural product biosynthetic gene clusters. MICROBIOLOGY-SGM 2016; 162:2075-2086. [PMID: 27902408 DOI: 10.1099/mic.0.000386] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Traditional natural product discovery methods have nearly exhausted the accessible diversity of microbial chemicals, making new sources and techniques paramount in the search for new molecules. Marine actinomycete bacteria have recently come into the spotlight as fruitful producers of structurally diverse secondary metabolites, and remain relatively untapped. In this study, we sequenced 21 marine-derived actinomycete strains, rarely studied for their secondary metabolite potential and under-represented in current genomic databases. We found that genome size and phylogeny were good predictors of biosynthetic gene cluster diversity, with larger genomes rivalling the well-known marine producers in the Streptomyces and Salinispora genera. Genomes in the Micrococcineae suborder, however, had consistently the lowest number of biosynthetic gene clusters. By networking individual gene clusters into gene cluster families, we were able to computationally estimate the degree of novelty each genus contributed to the current sequence databases. Based on the similarity measures between all actinobacteria in the Joint Genome Institute's Atlas of Biosynthetic gene Clusters database, rare marine genera show a high degree of novelty and diversity, with Corynebacterium, Gordonia, Nocardiopsis, Saccharomonospora and Pseudonocardia genera representing the highest gene cluster diversity. This research validates that rare marine actinomycetes are important candidates for exploration, as they are relatively unstudied, and their relatives are historically rich in secondary metabolites.
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Affiliation(s)
- Michelle A Schorn
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, USA
| | - Mohammad M Alanjary
- German Centre for Infection Research (DZIF), Interfaculty Institute for Microbiology and Infection Medicine Tuebingen (IMIT), University of Tuebingen, Tuebingen, Germany
| | | | - Anton Korobeynikov
- Center for Algorithmic Biotechnology, St. Petersburg State University, St. Petersburg, Russia.,Department of Statistical Modeling, St. Petersburg State University, St. Petersburg, Russia
| | - Sheila Podell
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, USA
| | - Nastassia Patin
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, USA
| | | | - Paul R Jensen
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, USA.,Center for Microbiome Innovation, University of California, San Diego, USA
| | - Nadine Ziemert
- German Centre for Infection Research (DZIF), Interfaculty Institute for Microbiology and Infection Medicine Tuebingen (IMIT), University of Tuebingen, Tuebingen, Germany
| | - Bradley S Moore
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, USA.,Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, USA.,Center for Microbiome Innovation, University of California, San Diego, USA
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178
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Yang S, Xi Y, Chen J, Yang Z. Mechanistic Study of SmI2-Mediated Reformatsky Reaction for Macrolactam Formation Using a Cyclopropyl Group as a Probe. Isr J Chem 2016. [DOI: 10.1002/ijch.201600104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shouliang Yang
- Key Laboratory of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); College of Chemistry and Molecular Engineering and; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 P. R. China
| | - Yumeng Xi
- Key Laboratory of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); College of Chemistry and Molecular Engineering and; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 P. R. China
| | - Jiahua Chen
- Key Laboratory of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); College of Chemistry and Molecular Engineering and; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 P. R. China
| | - Zhen Yang
- Key Laboratory of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); College of Chemistry and Molecular Engineering and; Peking-Tsinghua Center for Life Sciences; Peking University; Beijing 100871 P. R. China
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 P. R. China
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179
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AlMatar M, Eldeeb M, Makky EA, Köksal F, Var I, Kayar B. Are There Any Other Compounds Isolated From Dermacoccus spp at All? Curr Microbiol 2016; 74:132-144. [PMID: 27785553 DOI: 10.1007/s00284-016-1152-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 10/21/2016] [Indexed: 12/20/2022]
Abstract
Microbial-derived natural products have functional and structural diversity and complexity. For several decades, they have provided the basic foundation for most drugs available to modern medicine. Microbial-derived natural products have wide-ranging applications, especially as chemotherapeutics for various diseases and disorders. By exploring distinct microorganisms in different environments, small novel bioactive molecules with unique functionalities and biological or biomedical significance can be identified. Aquatic environments, such as oceans or seas, are considered to be sources of abundant novel bioactive compounds. Studies on marine microorganisms have revealed that several bioactive compounds extracted from marine algae and invertebrates are eventually generated by their associated bacteria. These findings have prompted intense research interest in discovering novel compounds from marine microorganisms. Natural products derived from Dermacoccus exhibit antibacterial, antitumor, antifungal, antioxidant, antiviral, antiparasitic, and eventually immunosuppressive bioactivities. In this review, we discussed the diversity of secondary metabolites generated by genus Dermacoccus with respect to their chemical structure, biological activity, and origin. This brief review highlights and showcases the pivotal importance of Dermacoccus-derived natural products and sheds light on the potential venues of discovery of new bioactive compounds from marine microorganisms.
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Affiliation(s)
- Manaf AlMatar
- Department of Biotechnology, Institute of Natural and Applied Sciences (Fen Bilimleri Enstitüsü), Cukurova University, 01330, Adana, Turkey.
| | - Mohamed Eldeeb
- Department of Biochemistry, University of Alberta, Edmonton, AB, Canada
| | - Essam A Makky
- Department of Biotechnology, Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang (UMP), Gambang, 26300, Kuantan, Malaysia
| | - Fatih Köksal
- Department of Medical Microbiology, Faculty of Medicine, Çukurova University, 01100, Adana, Turkey
| | - Işıl Var
- Department of Food Engineering, Agricultural Faculty, Cukurova University, 01100, Adana, Turkey
| | - Begüm Kayar
- Department of Medical Microbiology, Faculty of Medicine, Çukurova University, 01100, Adana, Turkey
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180
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Evaluation of fermentation conditions triggering increased antibacterial activity from a near-shore marine intertidal environment-associated Streptomyces species. Synth Syst Biotechnol 2016; 2:28-38. [PMID: 29062959 PMCID: PMC5625789 DOI: 10.1016/j.synbio.2016.09.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 09/21/2016] [Accepted: 09/21/2016] [Indexed: 12/26/2022] Open
Abstract
A near-shore marine intertidal environment-associated Streptomyces isolate (USC-633) from the Sunshine Coast Region of Queensland, Australia, cultivated under a range of chemically defined and complex media to determine optimal parameters resulting in the secretion of diverse array of secondary metabolites with antimicrobial properties against various antibiotic resistant bacteria. Following extraction, fractioning and re-testing of active metabolites resulted in persistent antibacterial activity against Escherichia coli (Migula) (ATCC 13706) and subsequent Nuclear Magnetic Resonance (NMR) analysis of the active fractions confirmed the induction of metabolites different than the ones in fractions which did not display activity against the same bacterial species. Overall findings again confirmed the value of One Strain–Many Compounds (OSMAC) approach that tests a wide range of growth parameters to trigger bioactive compound secretion increasing the likelihood of finding novel therapeutic agents. The isolate was found to be adaptable to both marine and terrestrial conditions corresponding to its original near-shore marine intertidal environment. Wide variations in its morphology, sporulation and diffusible pigment production were observed when different growth media were used.
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181
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Suriya J, Bharathiraja S, Krishnan M, Manivasagan P, Kim SK. Marine Microbial Amylases: Properties and Applications. ADVANCES IN FOOD AND NUTRITION RESEARCH 2016; 79:161-177. [PMID: 27770860 DOI: 10.1016/bs.afnr.2016.07.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Amylases are crucial enzymes which hydrolyze internal glycosidic linkages in starch and produce as primary products dextrins and oligosaccharides. Amylases are classified into α-amylase, β-amylase, and glucoamylase based on their three-dimensional structures, reaction mechanisms, and amino acid sequences. Amylases have innumerable applications in clinical, medical, and analytical chemistries as well as in food, detergent, textile, brewing, and distilling industries. Amylases can be produced from plants, animals, and microbial sources. Due to the advantages in microbial production, it meets commercial needs. The pervasive nature, easy production, and wide range of applications make amylase an industrially pivotal enzyme. This chapter will focus on amylases found in marine microorganisms, their potential industrial applications, and how these enzymes can be improved to the required bioprocessing conditions.
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Affiliation(s)
- J Suriya
- School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - S Bharathiraja
- CAS in Marine Biology, Annamalai University, Porto Novo, Tamil Nadu, India
| | - M Krishnan
- School of Environmental Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
| | - P Manivasagan
- Marine Bioprocess Research Center, Pukyong National University, Busan, Republic of Korea.
| | - S-K Kim
- Marine Bioprocess Research Center; Specialized Graduate School Science & Technology Convergence, Pukyong National University, Busan, Republic of Korea.
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182
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Wang J, Chen L, Chen Z, Zhang W. RNA-seq based transcriptomic analysis of single bacterial cells. Integr Biol (Camb) 2016; 7:1466-76. [PMID: 26331465 DOI: 10.1039/c5ib00191a] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Gene-expression heterogeneity among individual cells determines the fate of a bacterial population. Here we report the first bacterial single-cell RNA sequencing (RNA-seq), BaSiC RNA-seq, a method integrating RNA isolation, cDNA synthesis and amplification, and RNA-seq analysis of the whole transcriptome of single cyanobacterium Synechocystis sp. PCC 6803 cells which typically contain approximately 5-7 femtogram total RNA per cell. We applied the method to 3 Synechocystis single cells at 24 h and 3 single cells at 72 h after nitrogen-starvation stress treatment, as well as their bulk-cell controls under the same conditions, to determine the heterogeneity upon environmental stress. With 82-98% and 31-48% of all putative Synechocystis genes identified in single cells of 24 and 72 h, respectively, the results demonstrated that the method could achieve good identification of the transcripts in single bacterial cells. In addition, the preliminary results from nitrogen-starved cells also showed a possible increasing gene-expression heterogeneity from 24 h to 72 h after nitrogen starvation stress. Moreover, preliminary analysis of single-cell transcriptomic datasets revealed that genes from the "Mobile elements" functional category have the most significant increase of gene-expression heterogeneity upon stress, which was further confirmed by single-cell RT-qPCR analysis of gene expression in 24 randomly selected cells.
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Affiliation(s)
- Jiangxin Wang
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, P. R. China. and Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin 300072, P. R. China
| | - Lei Chen
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, P. R. China. and Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin 300072, P. R. China
| | - Zixi Chen
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, P. R. China. and Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin 300072, P. R. China
| | - Weiwen Zhang
- Laboratory of Synthetic Microbiology, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, P. R. China. and Key Laboratory of Systems Bioengineering, Ministry of Education of China, Tianjin 300072, P. R. China
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183
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Sukhonosova EV, Sokov SA, Ostapenko GI, Bunev AS, Dorovatovskii PV, Zubavichus YV, Khrustalev VN. Crystal structures of ethyl {2-[4-(4-iso-propyl-phen-yl)thia-zol-2-yl]phen-yl}carbamate and ethyl {2-[4-(3-nitro-phen-yl)thia-zol-2-yl]phen-yl}carbamate. Acta Crystallogr E Crystallogr Commun 2016; 72:1321-1325. [PMID: 27920926 PMCID: PMC5120716 DOI: 10.1107/s2056989016013104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 08/13/2016] [Indexed: 11/23/2022]
Abstract
The title compounds, C21H22N2O2S (I) and C18H15N3O4S (II), are structural analogs of the alkaloid Thio-sporine B. Both mol-ecules adopt a near-planar V-shaped conformation, which is consolidated by intra-molecular N-H⋯N and C-H⋯O hydrogen bonds. The crystal structure of (I) consists of mlecular stacks along the a axis, in which the mol-ecules are linked to each other by π(S)⋯π(C) inter-actions. In the crystal of (II), mol-ecules are linked into chains by C-H⋯O hydrogen bonds and the chains are cross-linked into (100) sheets by π-π stacking inter-actions.
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Affiliation(s)
- Elena V. Sukhonosova
- Laboratory of Functional Heterocyclic Compounds, Togliatti State University, 14 Belorusskaya St., Togliatti 445020, Russian Federation
| | - Sergey A. Sokov
- Laboratory of Functional Heterocyclic Compounds, Togliatti State University, 14 Belorusskaya St., Togliatti 445020, Russian Federation
| | - Gennady I. Ostapenko
- Laboratory of Functional Heterocyclic Compounds, Togliatti State University, 14 Belorusskaya St., Togliatti 445020, Russian Federation
| | - Alexander S. Bunev
- Laboratory of Functional Heterocyclic Compounds, Togliatti State University, 14 Belorusskaya St., Togliatti 445020, Russian Federation
| | - Pavel V. Dorovatovskii
- National Research Centre "Kurchatov Institute", 1 Acad. Kurchatov Sq., Moscow 123182, Russian Federation
| | - Yan V. Zubavichus
- National Research Centre "Kurchatov Institute", 1 Acad. Kurchatov Sq., Moscow 123182, Russian Federation
| | - Victor N. Khrustalev
- Inorganic Chemistry Department, Peoples’ Friendship University of Russia, 6 Miklukho-Maklay St., Moscow 117198, Russian Federation
- X-Ray Structural Centre, A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St., B–334, Moscow 119991, Russian Federation
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184
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Floros DJ, Jensen PR, Dorrestein PC, Koyama N. A metabolomics guided exploration of marine natural product chemical space. Metabolomics 2016; 12:145. [PMID: 28819353 PMCID: PMC5556696 DOI: 10.1007/s11306-016-1087-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Accepted: 07/22/2016] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Natural products from culture collections have enormous impact in advancing discovery programs for metabolites of biotechnological importance. These discovery efforts rely on the metabolomic characterization of strain collections. OBJECTIVE Many emerging approaches compare metabolomic profiles of such collections, but few enable the analysis and prioritization of thousands of samples from diverse organisms while delivering chemistry specific read outs. METHOD In this work we utilize untargeted LC-MS/MS based metabolomics together with molecular networking to. RESULT This approach annotated 76 molecular families (a spectral match rate of 28 %), including clinically and biotechnologically important molecules such as valinomycin, actinomycin D, and desferrioxamine E. Targeting a molecular family produced primarily by one microorganism led to the isolation and structure elucidation of two new molecules designated maridric acids A and B. CONCLUSION Molecular networking guided exploration of large culture collections allows for rapid dereplication of know molecules and can highlight producers of uniques metabolites. These methods, together with large culture collections and growing databases, allow for data driven strain prioritization with a focus on novel chemistries.
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Affiliation(s)
- Dimitrios J Floros
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, USA
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Collaborative Mass Spectrometry Innovation Center, University of California, San Diego, La Jolla, CA, USA
| | - Paul R Jensen
- Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, USA
| | - Pieter C Dorrestein
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Collaborative Mass Spectrometry Innovation Center, University of California, San Diego, La Jolla, CA, USA
| | - Nobuhiro Koyama
- Skaggs School of Pharmacy and Pharmaceutical Sciences, Collaborative Mass Spectrometry Innovation Center, University of California, San Diego, La Jolla, CA, USA
- Graduate School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan inventory the chemistries associated with 1000 marine microorganisms
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185
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Aftab U, Sajid I. Antitumor Peptides from Streptomyces sp. SSA 13, Isolated from Arabian Sea. Int J Pept Res Ther 2016. [DOI: 10.1007/s10989-016-9552-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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186
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Zhang MM, Wang Y, Ang EL, Zhao H. Engineering microbial hosts for production of bacterial natural products. Nat Prod Rep 2016; 33:963-87. [PMID: 27072804 PMCID: PMC4963277 DOI: 10.1039/c6np00017g] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Covering up to end 2015Microbial fermentation provides an attractive alternative to chemical synthesis for the production of structurally complex natural products. In most cases, however, production titers are low and need to be improved for compound characterization and/or commercial production. Owing to advances in functional genomics and genetic engineering technologies, microbial hosts can be engineered to overproduce a desired natural product, greatly accelerating the traditionally time-consuming strain improvement process. This review covers recent developments and challenges in the engineering of native and heterologous microbial hosts for the production of bacterial natural products, focusing on the genetic tools and strategies for strain improvement. Special emphasis is placed on bioactive secondary metabolites from actinomycetes. The considerations for the choice of host systems will also be discussed in this review.
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Affiliation(s)
- Mingzi M Zhang
- Metabolic Engineering Research Laboratory, Science and Engineering Institutes, Agency for Science, Technology and Research, Singapore
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187
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Undabarrena A, Beltrametti F, Claverías FP, González M, Moore ERB, Seeger M, Cámara B. Exploring the Diversity and Antimicrobial Potential of Marine Actinobacteria from the Comau Fjord in Northern Patagonia, Chile. Front Microbiol 2016; 7:1135. [PMID: 27486455 PMCID: PMC4949237 DOI: 10.3389/fmicb.2016.01135] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 07/07/2016] [Indexed: 11/13/2022] Open
Abstract
Bioprospecting natural products in marine bacteria from fjord environments are attractive due to their unique geographical features. Although, Actinobacteria are well known for producing a myriad of bioactive compounds, investigations regarding fjord-derived marine Actinobacteria are scarce. In this study, the diversity and biotechnological potential of Actinobacteria isolated from marine sediments within the Comau fjord, in Northern Chilean Patagonia, were assessed by culture-based approaches. The 16S rRNA gene sequences revealed that members phylogenetically related to the Micrococcaceae, Dermabacteraceae, Brevibacteriaceae, Corynebacteriaceae, Microbacteriaceae, Dietziaceae, Nocardiaceae, and Streptomycetaceae families were present at the Comau fjord. A high diversity of cultivable Actinobacteria (10 genera) was retrieved by using only five different isolation media. Four isolates belonging to Arthrobacter, Brevibacterium, Corynebacterium and Kocuria genera showed 16S rRNA gene identity <98.7% suggesting that they are novel species. Physiological features such as salt tolerance, artificial sea water requirement, growth temperature, pigmentation and antimicrobial activity were evaluated. Arthrobacter, Brachybacterium, Curtobacterium, Rhodococcus, and Streptomyces isolates showed strong inhibition against both Gram-negative Pseudomonas aeruginosa, Escherichia coli and Salmonella enterica and Gram-positive Staphylococcus aureus, Listeria monocytogenes. Antimicrobial activities in Brachybacterium, Curtobacterium, and Rhodococcus have been scarcely reported, suggesting that non-mycelial strains are a suitable source of bioactive compounds. In addition, all strains bear at least one of the biosynthetic genes coding for NRPS (91%), PKS I (18%), and PKS II (73%). Our results indicate that the Comau fjord is a promising source of novel Actinobacteria with biotechnological potential for producing biologically active compounds.
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Affiliation(s)
- Agustina Undabarrena
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa MaríaValparaíso, Chile
| | | | - Fernanda P. Claverías
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa MaríaValparaíso, Chile
| | - Myriam González
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa MaríaValparaíso, Chile
| | - Edward R. B. Moore
- Culture Collection University of Gothenburg (CCUG), Sahlgrenska Academy, University of GothenburgGothenburg, Sweden
- Department of Infectious Diseases, Sahlgrenska Academy, University of GothenburgGothenburg, Sweden
| | - Michael Seeger
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa MaríaValparaíso, Chile
| | - Beatriz Cámara
- Laboratorio de Microbiología Molecular y Biotecnología Ambiental, Departamento de Química & Centro de Biotecnología Daniel Alkalay Lowitt, Universidad Técnica Federico Santa MaríaValparaíso, Chile
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188
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Draft Genome Sequence of Arthrobacter enclensis NCIM 5488
T
for Secondary Metabolism. GENOME ANNOUNCEMENTS 2016; 4:4/3/e00497-16. [PMID: 27257206 PMCID: PMC4891652 DOI: 10.1128/genomea.00497-16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
ABSTRACT
Here, we report the draft genome sequence of
Arthrobacter enclensis
NCIM 5488
T
, an actinobacterium isolated from a marine sediment sample from Chorao Island, Goa, India. This draft genome sequence consists of 4,226,231 bp with a G+C content of 67.08%, 3,888 protein-coding genes, 50 tRNAs, and 10 rRNAs. Analysis of the genome using bioinformatics tools such as antiSMASH and NaPDoS showed the presence of many unique natural product biosynthetic gene clusters.
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189
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Nicolaou KC, Wang Y, Lu M, Mandal D, Pattanayak MR, Yu R, Shah AA, Chen JS, Zhang H, Crawford JJ, Pasunoori L, Poudel YB, Chowdari NS, Pan C, Nazeer A, Gangwar S, Vite G, Pitsinos EN. Streamlined Total Synthesis of Uncialamycin and Its Application to the Synthesis of Designed Analogues for Biological Investigations. J Am Chem Soc 2016; 138:8235-46. [DOI: 10.1021/jacs.6b04339] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K. C. Nicolaou
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Yanping Wang
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Min Lu
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Debashis Mandal
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Manas R. Pattanayak
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ruocheng Yu
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Akshay A. Shah
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
| | - Jason S. Chen
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Hongjun Zhang
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - James J. Crawford
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Laxman Pasunoori
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Yam B. Poudel
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Naidu S. Chowdari
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Chin Pan
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Ayesha Nazeer
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Sanjeev Gangwar
- Bristol-Myers Squibb Research & Development, 700 Bay Road, Redwood City, California 94063, United States
| | - Gregory Vite
- Bristol-Myers Squibb Research & Development, Princeton, New Jersey 08543-4000, United States
| | - Emmanuel N. Pitsinos
- Department
of Chemistry, BioScience Research Collaborative, Rice University, 6100
Main Street, Houston, Texas 77005, United States
- Laboratory of Natural Products Synthesis & Bioorganic Chemistry, Institute of Nanoscience & Nanotechnology, National Centre of Scientific Research “Demokritos”, Agia Paraskevi GR-15310, Greece
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190
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Huang H, Hou L, Li H, Qiu Y, Ju J, Li W. Activation of a plasmid-situated type III PKS gene cluster by deletion of a wbl gene in deepsea-derived Streptomyces somaliensis SCSIO ZH66. Microb Cell Fact 2016; 15:116. [PMID: 27350607 PMCID: PMC4924298 DOI: 10.1186/s12934-016-0515-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 06/17/2016] [Indexed: 11/16/2022] Open
Abstract
Background Actinomycete genome sequencing has disclosed a large number of cryptic secondary metabolite biosynthetic gene clusters. However, their unavailable or limited expression severely hampered the discovery of bioactive compounds. The whiB-like (wbl) regulatory genes play important roles in morphological differentiation as well as secondary metabolism; and hence the wblAso gene was probed and set as the target to activate cryptic gene clusters in deepsea-derived Streptomyces somaliensis SCSIO ZH66. Results wblAso from deepsea-derived S. somaliensis SCSIO ZH66 was inactivated, leading to significant changes of secondary metabolites production in the ΔwblAso mutant, from which α-pyrone compound violapyrone B (VLP B) was isolated. Subsequently, the VLP biosynthetic gene cluster was identified and characterized, which consists of a type III polyketide synthase (PKS) gene vioA and a regulatory gene vioB; delightedly, inactivation of vioB led to isolation of another four VLPs analogues, among which one was new and two exhibited improved anti-MRSA (methicillin-resistant Staphylococcus aureus, MRSA) activity than VLP B. Moreover, transcriptional analysis revealed that the expression levels of whi genes (whiD, whiG, whiH and whiI) and wbl genes (wblC, wblE, wblH, wblI and wblK) were repressed by different degrees, suggesting an intertwined regulation mechanism of wblAso in morphological differentiation and secondary metabolism of S. somaliensis SCSIO ZH66. Conclusions wblA orthologues would be effective targets for activation of cryptic gene clusters in marine-derived Streptomyces strains, notwithstanding the regulation mechanisms might be varied in different strains. Moreover, the availability of the vio gene cluster has enriched the diversity of type III PKSs, providing new opportunities to expand the chemical space of polyketides through biosynthetic engineering. Electronic supplementary material The online version of this article (doi:10.1186/s12934-016-0515-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Huiming Huang
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Lukuan Hou
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Huayue Li
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Yanhong Qiu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China
| | - Jianhua Ju
- CAS Key Laboratory of Marine Bio-resources Sustainable Utilization, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, China
| | - Wenli Li
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, China.
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191
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Actinoquinolines A and B, anti-inflammatory quinoline alkaloids from a marine-derived Streptomyces sp., strain CNP975. J Antibiot (Tokyo) 2016. [DOI: 10.1038/ja.2016.56 pmid: 27220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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192
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Actinoquinolines A and B, anti-inflammatory quinoline alkaloids from a marine-derived Streptomyces sp., strain CNP975. J Antibiot (Tokyo) 2016; 69:511-4. [DOI: 10.1038/ja.2016.56] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 04/17/2016] [Accepted: 04/20/2016] [Indexed: 11/08/2022]
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193
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Dobretsov S, Tamimi Y, Al-Kindi MA, Burney I. Screening for Anti-Cancer Compounds in Marine Organisms in Oman. Sultan Qaboos Univ Med J 2016; 16:e168-74. [PMID: 27226907 DOI: 10.18295/squmj.2016.16.02.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 12/02/2015] [Accepted: 01/03/2016] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES Marine organisms are a rich source of bioactive molecules with potential applications in medicine, biotechnology and industry; however, few bioactive compounds have been isolated from organisms inhabiting the Arabian Gulf and the Gulf of Oman. This study aimed to isolate and screen the anti-cancer activity of compounds and extracts from 40 natural products of marine organisms collected from the Gulf of Oman. METHODS This study was carried out between January 2012 and December 2014 at the Sultan Qaboos University, Muscat, Oman. Fungi, bacteria, sponges, algae, soft corals, tunicates, bryozoans, mangrove tree samples and sea cucumbers were collected from seawater at Marina Bandar Al-Rowdha and Bandar Al-Khayran in Oman. Bacteria and fungi were isolated using a marine broth and organisms were extracted with methanol and ethyl acetate. Compounds were identified from spectroscopic data. The anti-cancer activity of the compounds and extracts was tested in a Michigan Cancer Foundation (MCF)-7 cell line breast adenocarcinoma model. RESULTS Eight pure compounds and 32 extracts were investigated. Of these, 22.5% showed strong or medium anti-cancer activity, with malformin A, kuanoniamine D, hymenialdisine and gallic acid showing the greatest activity, as well as the soft coral Sarcophyton sp. extract. Treatment of MCF-7 cells at different concentrations of Sarcophyton sp. extracts indicated the induction of concentration-dependent cell death. Ultrastructural analysis highlighted the presence of nuclear fragmentation, membrane protrusion, blebbing and chromatic segregation at the nuclear membrane, which are typical characteristics of cell death by apoptosis induction. CONCLUSION Some Omani marine organisms showed high anti-cancer potential. The efficacy, specificity and molecular mechanisms of anti-cancer compounds from Omani marine organisms on various cancer models should be investigated in future in vitro and in vivo studies.
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Affiliation(s)
- Sergey Dobretsov
- Department of Marine Science & Fisheries, College of Agricultural & Marine Sciences, Sultan Qaboos University;; Centre of Excellence in Marine Biotechnology, Sultan Qaboos University
| | - Yahya Tamimi
- Departments of Biochemistry, Sultan Qaboos University
| | - Mohamed A Al-Kindi
- Pathology, College of Medicine & Health Sciences, Sultan Qaboos University
| | - Ikram Burney
- Department of Medicine, Sultan Qaboos University Hospital, Muscat, Oman
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194
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Cho KH, Kim DC, Yoon C, Ko WM, Lee SJ, Sohn JH, Jang JH, Ahn JS, Kim YC, Oh H. Anti-neuroinflammatory effects of citreohybridonol involving TLR4-MyD88-mediated inhibition of NF-кB and MAPK signaling pathways in lipopolysaccharide-stimulated BV2 cells. Neurochem Int 2016; 95:55-62. [DOI: 10.1016/j.neuint.2015.12.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 12/07/2015] [Accepted: 12/22/2015] [Indexed: 11/17/2022]
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195
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Lee J, Han C, Lee TG, Chin J, Choi H, Lee W, Paik MJ, Won DH, Jeong G, Ko J, Yoon YJ, Nam SJ, Fenical W, Kang H. Marinopyrones A–D, α-pyrones from marine-derived actinomycetes of the family Nocardiopsaceae. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.03.084] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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196
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Le TC, Yang I, Yoon YJ, Nam SJ, Fenical W. Ansalactams B–D Illustrate Further Biosynthetic Plasticity within the Ansamycin Pathway. Org Lett 2016; 18:2256-9. [DOI: 10.1021/acs.orglett.6b00892] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tu Cam Le
- Department
of Chemistry and Nano Science, Global Top 5 program, Ewha Womans University, Seoul 03760, Korea
| | - Inho Yang
- Department
of Chemistry and Nano Science, Global Top 5 program, Ewha Womans University, Seoul 03760, Korea
| | - Yeo Joon Yoon
- Department
of Chemistry and Nano Science, Global Top 5 program, Ewha Womans University, Seoul 03760, Korea
| | - Sang-Jip Nam
- Department
of Chemistry and Nano Science, Global Top 5 program, Ewha Womans University, Seoul 03760, Korea
| | - William Fenical
- Center
for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, California 92093-0204, United States
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197
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Lee DS, Yoon CS, Jung YT, Yoon JH, Kim YC, Oh H. Marine-Derived Secondary Metabolite, Griseusrazin A, Suppresses Inflammation through Heme Oxygenase-1 Induction in Activated RAW264.7 Macrophages. JOURNAL OF NATURAL PRODUCTS 2016; 79:1105-1111. [PMID: 27019105 DOI: 10.1021/acs.jnatprod.6b00009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A new secondary metabolite, named griseusrazin A (1), was isolated from the marine-derived bacterium Streptomyces griseus subsp. griseus. The structure of the compound was determined by analysis of spectroscopic data including MS, COSY, HSQC, HMBC, and (15)N-HMBC data. Griseusrazin A (1) inhibited the production of inflammatory mediators, such as prostaglandin E2 and nitric oxide, which was mediated through the suppression of the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) in lipopolysaccharide (LPS)-stimulated RAW264.7 macrophages. The production of pro-inflammatory cytokines, such as interleukin (IL)-6, IL-1β, and tumor necrosis factor (TNF)-α, in the LPS-stimulated cells was also effectively blocked by griseusrazin A (1). Furthermore, this anti-inflammatory activity of 1 was linked to its inhibitory effects against the nuclear translocation of NF-κB p50 and p65, as wells as NF-κB binding activity. In the further study to elucidate the anti-inflammatory mechanism, 1 was shown to induce heme oxygenase-1 (HO-1) expression through the enhancement of nuclear translocation of nuclear factor E2-related factor 2. Furthermore, the anti-inflammatory activity of 1 in the LPS-stimulated cells was partially reversed by an HO inhibitor, tin protoporphyrin. These results indicate that the anti-inflammatory effect of 1 is associated with Nrf2-mediated HO-1 expression.
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Affiliation(s)
- Dong-Sung Lee
- College of Pharmacy, Wonkwang University , Iksan, 54538, Republic of Korea
- Department of Biomedical Chemistry, College of Health and Biomedical Science, Konkuk University , Chung-Ju 27478, Republic of Korea
| | - Chi-Su Yoon
- College of Pharmacy, Wonkwang University , Iksan, 54538, Republic of Korea
| | - Yong-Taek Jung
- Department of Food Science and Biotechnology, Sungkyunkwan University , Jangan-gu, Suwon 16419, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University , Jangan-gu, Suwon 16419, Republic of Korea
| | - Youn-Chul Kim
- College of Pharmacy, Wonkwang University , Iksan, 54538, Republic of Korea
| | - Hyuncheol Oh
- College of Pharmacy, Wonkwang University , Iksan, 54538, Republic of Korea
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Anti-Inflammatory and Cytoprotective Effects of TMC-256C1 from Marine-Derived Fungus Aspergillus sp. SF-6354 via up-Regulation of Heme Oxygenase-1 in Murine Hippocampal and Microglial Cell Lines. Int J Mol Sci 2016; 17:529. [PMID: 27070586 PMCID: PMC4848985 DOI: 10.3390/ijms17040529] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 03/18/2016] [Accepted: 03/25/2016] [Indexed: 12/24/2022] Open
Abstract
In the course of searching for bioactive secondary metabolites from marine fungi, TMC-256C1 was isolated from an ethyl acetate extract of the marine-derived fungus Aspergillus sp. SF6354. TMC-256C1 displayed anti-neuroinflammatory effect in BV2 microglial cells induced by lipopolysaccharides (LPS) as well as neuroprotective effect against glutamate-stimulated neurotoxicity in mouse hippocampal HT22 cells. TMC-256C1 was shown to develop a cellular resistance to oxidative damage caused by glutamate-induced cytotoxicity and reactive oxygen species (ROS) generation in HT22 cells, and suppress the inflammation process in LPS-stimulated BV2 cells. Furthermore, the neuroprotective and anti-neuroinflammatory activities of TMC-256C1 were associated with upregulated expression of heme oxygenase (HO)-1 and nuclear translocation of nuclear factor-E2-related factor 2 (Nrf2) in HT22 and BV2 cells. We also found that TMC-256C1 activated p38 mitogen-activated protein kinases (MAPK) and phosphatidylinositol 3-kinase (PI3K)/Akt signaling pathways in HT22 and BV2 cells. These results demonstrated that TMC-256C1 activates HO-1 protein expression, probably by increasing nuclear Nrf2 levels via the activation of the p38 MAPK and PI3K/Akt pathways.
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199
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New Cyclic Lipopeptides of the Iturin Class Produced by Saltern-Derived Bacillus sp. KCB14S006. Mar Drugs 2016; 14:md14040072. [PMID: 27049393 PMCID: PMC4849076 DOI: 10.3390/md14040072] [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: 02/15/2016] [Revised: 03/24/2016] [Accepted: 03/28/2016] [Indexed: 12/30/2022] Open
Abstract
Salterns, one of the most extreme natural hypersaline environments, are a rich source of halophilic and halotolerant microorganisms, but they remain largely underexplored ecological niches in the discovery of bioactive secondary metabolites. In continued efforts to investigate the metabolic potential of microbial populations from chemically underexplored sites, three new lipopeptides named iturin F1, iturin F2 and iturin A9 (1–3), along with iturin A8 (4), were isolated from Bacillus sp. KCB14S006 derived from a saltern. The structures of the isolated compounds were established by 1D-, 2D-NMR and HR-ESIMS, and their absolute configurations were determined by applying advanced Marfey’s method and CD spectroscopy. All isolates exhibited significant antifungal activities against various pathogenic fungi and moderate cytotoxic activities toward HeLa and srcts-NRK cell lines. Moreover, in an in vitro enzymatic assay, compound 4 showed a significant inhibitory activity against indoleamine 2,3-dioxygenase.
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200
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Thi QV, Tran VH, Mai HDT, Le CV, Hong MLT, Murphy BT, Chau VM, Pham VC. Secondary Metabolites from an Actinomycete from Vietnam's East Sea. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100320] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Analysis of an antimicrobial extract prepared from culture broth of the marine-derived actinomycete Nocardiopsis sp. (strain G057) led to the isolation of twelve compounds, 1–12. Compound 1 (2-[(2 R-hydroxypropanoyl)amino]benzamide) was found to be a new enantiomeric isomer while compounds 2 (3-acetyl-4-hydroxycinnoline) and 3 (3,3′-bis-indole) were isolated from a natural source for the first time. The structures of 1 – 12 were determined by analyses of MS and 2D NMR data. All compounds were evaluated for their antimicrobial activity against a panel of clinically significant microorganisms. Compound 1 selectively inhibited Escherichia coli (MIC: 16 μg/mL). Compounds 2 and 3 exhibited antimicrobial activity against several strains of both Gram-positive and Gram-negative bacteria, and the yeast Candida albicans. Cytotoxic evaluation of compounds 1 – 3 against four cancer cell lines (KB, LU-1, HepG-2 and MCF-7) indicated that compound 3 produced a weak inhibition against KB and LU cell lines. Two remaining compounds, 1 and 2 were not cytotoxic, even at the concentration of 128 μg/mL.
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Affiliation(s)
- Quyen Vu Thi
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Hieu Tran
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Huong Doan Thi Mai
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Cong Vinh Le
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Minh Le Thi Hong
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Brian T. Murphy
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 South Wood Street (MC 781), Room 539, Chicago, Illinois 60612-7231, United States
| | - Van Minh Chau
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Van Cuong Pham
- Institute of Marine Biochemistry, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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