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Zhao H, He Y, Wang Y, He X, Zhao R, Liu B. Analysis of microbial community evolution, autolysis phenomena, and energy metabolism pathways in Pholiota nameko endophytes. Front Microbiol 2024; 15:1319886. [PMID: 38690362 PMCID: PMC11059008 DOI: 10.3389/fmicb.2024.1319886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 03/21/2024] [Indexed: 05/02/2024] Open
Abstract
Introduction Pholiota nameko is a widely consumed edible fungus. This study focuses on two crucial developmental stages of Pholiota nameko, namely, mycelium and ascospores. The objectives of this research were to investigate changes in microbial diversity and community structure during the growth of Pholiota nameko and to analyze the adaptability of the dominant strains to their respective habitats through metabolic. Methods Specifically, we conducted second-generation sequencing of the 16S rRNA gene (Illumina) on samples obtained from these stages. In addition, we isolated and characterized endophytes present in Pholiota nameko, focusing on examining the impact of dominant endophyte genera on autolysis. We also conducted a metabolic pathway analysis. Results and discussion The results unveiled 578,414 valid sequences of Pholiota nameko endophytic fungi. At the phylum level, the dominant taxa were Basidiomycota, Ascomycota, Zoopagomycota, and Mucoromycota. At the genus level, the dominant taxa observed were Pholiota, Inocybe, Fusarium, and Hortiboletus. For endophytic bacteria, we obtained 458,475 valid sequences. The dominant phyla were Proteobacteria, TM6, Firmicutes, and Bacteroidetes, while the dominant genera were Edaphobacter, Xanthomonas, Burkholderia, and Pseudomonas. Moreover, we identified the isolated strains in Pholiota nameko using 16S rDNA, and most of them were found to belong to the genus Pseudomonas, with Pseudomonas putida being the most prevalent strain. The findings revealed that the Pseudomonas putida strain has the ability to slow down the breakdown of soluble proteins and partially suppress the metabolic processes that generate superoxide anion radicals in Pholiota nameko, thereby reducing autolysis. Additionally, our results demonstrated that molybdenum enzyme-mediated anaerobic oxidative phosphorylation reactions were the primary energy metabolism pathway in the Pseudomonas putida strain. This suggests that the molybdenum cofactor synthesis pathway might be the main mechanism through which Pholiota nameko adapts to its complex and diverse habitats.
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Affiliation(s)
| | | | | | - Xiaolong He
- College of Life Sciences, Yan’an University, Yan’an, China
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Oppong-Danquah E, Miranda M, Blümel M, Tasdemir D. Bioactivity Profiling and Untargeted Metabolomics of Microbiota Associated with Mesopelagic Jellyfish Periphylla periphylla. Mar Drugs 2023; 21:md21020129. [PMID: 36827170 PMCID: PMC9958851 DOI: 10.3390/md21020129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 02/19/2023] Open
Abstract
The marine mesopelagic zone extends from water depths of 200 m to 1000 m and is home to a vast number and diversity of species. It is one of the least understood regions of the marine environment with untapped resources of pharmaceutical relevance. The mesopelagic jellyfish Periphylla periphylla is a well-known and widely distributed species in the mesopelagic zone; however, the diversity or the pharmaceutical potential of its cultivable microbiota has not been explored. In this study, we isolated microorganisms associated with the inner and outer umbrella of P. periphylla collected in Irminger Sea by a culture-dependent approach, and profiled their chemical composition and biological activities. Sixteen mostly gram-negative bacterial isolates were selected and subjected to an OSMAC cultivation regime approach using liquid and solid marine broth (MB) and glucose-yeast-malt (GYM) media. Their ethyl acetate (EtOAc) extracts were assessed for cytotoxicity and antimicrobial activity against fish and human pathogens. All, except one extract, displayed diverse levels of antimicrobial activities. Based on low IC50 values, four most bioactive gram-negative strains; Polaribacter sp. SU124, Shewanella sp. SU126, Psychrobacter sp. SU143 and Psychrobacter sp. SU137, were prioritized for an in-depth comparative and untargeted metabolomics analysis using feature-based molecular networking. Various chemical classes such as diketopiperazines, polyhydroxybutyrates (PHBs), bile acids and other lipids were putatively annotated, highlighting the biotechnological potential in P. periphylla-associated microbiota as well as gram-negative bacteria. This is the first study providing an insight into the cultivable bacterial community associated with the mesopelagic jellyfish P. periphylla and, indeed, the first to mine the metabolome and antimicrobial activities of these microorganisms.
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Affiliation(s)
- Ernest Oppong-Danquah
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, 24106 Kiel, Germany
| | - Martina Miranda
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, 24106 Kiel, Germany
| | - Martina Blümel
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, 24106 Kiel, Germany
| | - Deniz Tasdemir
- GEOMAR Centre for Marine Biotechnology (GEOMAR-Biotech), Research Unit Marine Natural Products Chemistry, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, 24106 Kiel, Germany
- Faculty of Mathematics and Natural Science, Kiel University, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
- Correspondence: ; Tel.: +49-431-6004430
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Nishimura S. Marine natural products targeting the eukaryotic cell membrane. J Antibiot (Tokyo) 2021; 74:769-785. [PMID: 34493848 DOI: 10.1038/s41429-021-00468-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 06/16/2021] [Accepted: 07/01/2021] [Indexed: 02/07/2023]
Abstract
The cell membrane, with high fluidity and alternative curvatures, maintains the robust integrity to distinguish inner and outer space of cells or organelles. Lipids are the main components of the cell membrane, but their functions are largely unknown. Even the visualization of lipids is not straightforward since modification of lipids often hampers its correct physical properties. Many natural products target cell membranes, some of which are used as pharmaceuticals and/or research tools. They show specific recognition on lipids, and thus exhibit desired pharmacological effects and unique biological phenotypes. This review is a catalog of marine natural products that target eukaryotic cell membranes. Chemical structures, biological activities, and molecular mechanisms are summarized. I hope that this review will be helpful for readers to notice the potential of marine natural products in the exploration of the function of lipids and the druggability of eukaryotic cell membranes.
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Affiliation(s)
- Shinichi Nishimura
- Department of Biotechnology, Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo, Japan.
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Jiang ZP, Sun SH, Yu Y, Mándi A, Luo JY, Yang MH, Kurtán T, Chen WH, Shen L, Wu J. Discovery of benthol A and its challenging stereochemical assignment: opening up a new window for skeletal diversity of super-carbon-chain compounds. Chem Sci 2021; 12:10197-10206. [PMID: 34447528 PMCID: PMC8336589 DOI: 10.1039/d1sc02810c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 06/25/2021] [Indexed: 12/28/2022] Open
Abstract
Super-carbon-chain compounds (SCCCs) are marine organic molecules featuring long polyol carbon chains with numerous stereocenters. Polyol-polyene compounds (PPCs) and ladder-frame polyethers (LFPs) are two major families. It is highly challenging to establish the absolute configurations of SCCCs. In this century, few new SCCC families have been reported. Benthol A, an aberrant SCCC, was obtained from a South China Sea benthic dinoflagellate that should belong to a new taxon. Its planar structure and absolute configuration, containing thirty-five carbon stereocenters, were unambiguously established by a combination of extensive NMR spectroscopic investigations, periodate degradation of the 1,2-diol groups, ozonolysis of the carbon-carbon double bonds, J-based configurational analysis, NOE interactions, modified Mosher's MTPA ester method, and DFT-NMR 13C chemical-shift calculations aided by DP4+ statistical analysis. Benthol A displayed potent antimalarial activity against Plasmodium falciparum 3D7 parasites. This new molecule combines extraordinary structural features, particularly eight scattered ether rings on a C72 backbone chain, which places it within a new SCCC family between PPCs and LFPs, herein termed polyol-polyether compounds. This suggestion was strongly supported by principal component analysis. The discovery of benthol A does not only provide new insights into the untapped biosynthetic potential of marine dinoflagellates, but also opens up a new window for skeletal diversity of SCCCs.
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Affiliation(s)
- Zhong-Ping Jiang
- School of Pharmaceutical Sciences, Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 P. R. China
| | - Shi-Hao Sun
- School of Pharmaceutical Sciences, Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 P. R. China
| | - Yi Yu
- Marine Drugs Research Center, College of Pharmacy, Jinan University 601 Huangpu Avenue West Guangzhou 510632 P. R. China
| | - Attila Mándi
- Department of Organic Chemistry, University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Jiao-Yang Luo
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100193 P. R. China
| | - Mei-Hua Yang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Peking Union Medical College Beijing 100193 P. R. China
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Wen-Hua Chen
- School of Biotechnology and Health Sciences, Wuyi University Jiangmen Guangdong Province 529020 P. R. China
| | - Li Shen
- Marine Drugs Research Center, College of Pharmacy, Jinan University 601 Huangpu Avenue West Guangzhou 510632 P. R. China
| | - Jun Wu
- School of Pharmaceutical Sciences, Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 P. R. China
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A Polyol-Polyol Super-Carbon-Chain Compound Containing Thirty-Six Carbon Stereocenters from the Dinoflagellate Amphidinium gibbosum: Absolute Configuration and Multi-Segment Modification. Mar Drugs 2020; 18:md18120590. [PMID: 33255887 PMCID: PMC7759953 DOI: 10.3390/md18120590] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/21/2020] [Accepted: 11/22/2020] [Indexed: 12/24/2022] Open
Abstract
A super-carbon-chain compound, named gibbosol C, featuring a polyoxygenated C70-linear-carbon-chain backbone encompassing two acyclic polyol chains, was obtained from the South China Sea dinoflagellate Amphidinium gibbosum. Its planar structure was elucidated by extensive NMR investigations, whereas its absolute configurations, featuring the presence of 36 carbon stereocenters and 30 hydroxy groups, were successfully established by comparison of NMR data of the ozonolyzed products with those of gibbosol A, combined with J-based configuration analysis, Kishi’s universal NMR database, and the modified Mosher’s MTPA ester method. Multi-segment modification was revealed as the smart biosynthetic strategy for the dinoflagellate to create remarkable super-carbon-chain compounds with structural diversity.
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Matsuda M, Kubota Y, Funabiki K, Uemura D, Inuzuka T. Amdigenol D, a long carbon-chain polyol, isolated from the marine dinoflagellate Amphidinium sp. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Li W, Yan R, Yu Y, Shi Z, Mándi A, Shen L, Kurtán T, Wu J. Determination of the Absolute Configuration of Super‐Carbon‐Chain Compounds by a Combined Chemical, Spectroscopic, and Computational Approach: Gibbosols A and B. Angew Chem Int Ed Engl 2020; 59:13028-13036. [PMID: 32343023 DOI: 10.1002/anie.202004358] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/15/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Wan‐Shan Li
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
| | - Ren‐Jie Yan
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
| | - Yi Yu
- Marine Drugs Research Center College of Pharmacy Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Zhi Shi
- College of Life Science and Technology Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Attila Mándi
- Department of Organic Chemistry University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Li Shen
- Marine Drugs Research Center College of Pharmacy Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Tibor Kurtán
- Department of Organic Chemistry University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Jun Wu
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
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8
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Li W, Yan R, Yu Y, Shi Z, Mándi A, Shen L, Kurtán T, Wu J. Determination of the Absolute Configuration of Super‐Carbon‐Chain Compounds by a Combined Chemical, Spectroscopic, and Computational Approach: Gibbosols A and B. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004358] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Wan‐Shan Li
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
| | - Ren‐Jie Yan
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
| | - Yi Yu
- Marine Drugs Research Center College of Pharmacy Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Zhi Shi
- College of Life Science and Technology Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Attila Mándi
- Department of Organic Chemistry University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Li Shen
- Marine Drugs Research Center College of Pharmacy Jinan University 601 Huangpu Avenue West Guangzhou 510632 China
| | - Tibor Kurtán
- Department of Organic Chemistry University of Debrecen PO Box 400 4002 Debrecen Hungary
| | - Jun Wu
- School of Pharmaceutical Sciences Southern Medical University 1838 Guangzhou Avenue North Guangzhou 510515 China
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9
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Nishimura S, Matsumori N. Chemical diversity and mode of action of natural products targeting lipids in the eukaryotic cell membrane. Nat Prod Rep 2020; 37:677-702. [PMID: 32022056 DOI: 10.1039/c9np00059c] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Covering: up to 2019Nature furnishes bioactive compounds (natural products) with complex chemical structures, yet with simple, sophisticated molecular mechanisms. When natural products exhibit their activities in cells or bodies, they first have to bind or react with a target molecule in/on the cell. The cell membrane is a major target for bioactive compounds. Recently, our understanding of the molecular mechanism of interactions between natural products and membrane lipids progressed with the aid of newly-developed analytical methods. New technology reconnects old compounds with membrane lipids, while new membrane-targeting molecules are being discovered through the screening for antimicrobial potential of natural products. This review article focuses on natural products that bind to eukaryotic membrane lipids, and includes clinically important molecules and key research tools. The chemical diversity of membrane-targeting natural products and the molecular basis of lipid recognition are described. The history of how their mechanism was unveiled, and how these natural products are used in research are also mentioned.
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Affiliation(s)
- Shinichi Nishimura
- Department of Biotechnology, Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Tokyo 113-8657, Japan.
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10
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Oceans as a Source of Immunotherapy. Mar Drugs 2019; 17:md17050282. [PMID: 31083446 PMCID: PMC6562586 DOI: 10.3390/md17050282] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/03/2019] [Accepted: 05/06/2019] [Indexed: 02/07/2023] Open
Abstract
Marine flora is taxonomically diverse, biologically active, and chemically unique. It is an excellent resource, which offers great opportunities for the discovery of new biopharmaceuticals such as immunomodulators and drugs targeting cancerous, inflammatory, microbial, and fungal diseases. The ability of some marine molecules to mediate specific inhibitory activities has been demonstrated in a range of cellular processes, including apoptosis, angiogenesis, and cell migration and adhesion. Immunomodulators have been shown to have significant therapeutic effects on immune-mediated diseases, but the search for safe and effective immunotherapies for other diseases such as sinusitis, atopic dermatitis, rheumatoid arthritis, asthma and allergies is ongoing. This review focuses on the marine-originated bioactive molecules with immunomodulatory potential, with a particular focus on the molecular mechanisms of specific agents with respect to their targets. It also addresses the commercial utilization of these compounds for possible drug improvement using metabolic engineering and genomics.
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Satake M, Cornelio K, Hanashima S, Malabed R, Murata M, Matsumori N, Zhang H, Hayashi F, Mori S, Kim JS, Kim CH, Lee JS. Structures of the Largest Amphidinol Homologues from the Dinoflagellate Amphidinium carterae and Structure-Activity Relationships. JOURNAL OF NATURAL PRODUCTS 2017; 80:2883-2888. [PMID: 29120640 DOI: 10.1021/acs.jnatprod.7b00345] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Amphidinols are polyketide metabolites produced by marine dinoflagellates and are chiefly composed of a long linear chain with polyol groups and polyolefins. Two new homologues, amphidinols 20 (AM20, 1) and 21 (AM21, 2), were isolated from Amphidinium carterae collected in Korea. Their structures were elucidated by detailed NMR analyses as amphidinol 6-type compounds with remarkably long polyol chains. Amphidinol 21 (2) has the longest linear structure among the amphidinol homologues reported so far. The congeners, particularly amphidinol 21 (2), showed weaker activity in hemolysis and antifungal assays compared to known amphidinols.
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Affiliation(s)
- Masayuki Satake
- Department of Chemistry, School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kimberly Cornelio
- Department of Chemistry, Graduate School of Science, Osaka University , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- JST ERATO Lipid Active Structure Project , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Shinya Hanashima
- Department of Chemistry, Graduate School of Science, Osaka University , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Raymond Malabed
- Department of Chemistry, Graduate School of Science, Osaka University , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Michio Murata
- Department of Chemistry, Graduate School of Science, Osaka University , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
- JST ERATO Lipid Active Structure Project , 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Nobuaki Matsumori
- Department of Chemistry, Graduate School of Sciences, Kyushu University , 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Huiping Zhang
- RIKEN Center for Life Science Technology , 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Fumiaki Hayashi
- RIKEN Center for Life Science Technology , 1-7-22, Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Shoko Mori
- Bioorganic Research Institute, Suntory Foundation for Life Sciences , Sikadai, Seika-cho, Soraku-gun, Kyoto 619-0284 Japan
| | - Jong Souk Kim
- Department of Marine Bio-materials & Aquaculture, Pukyong National University , Busan 608-737, Korea
| | - Chang-Hoon Kim
- Department of Marine Bio-materials & Aquaculture, Pukyong National University , Busan 608-737, Korea
| | - Jong-Soo Lee
- Department of Seafood and Aquaculture Science, College of Marine Science, Gyeongsang National University , Tongyeong, Kyungnam 650-160, Korea
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HPLC-HRMS Quantification of the Ichthyotoxin Karmitoxin from Karlodinium armiger. Mar Drugs 2017; 15:md15090278. [PMID: 28858210 PMCID: PMC5618417 DOI: 10.3390/md15090278] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 08/21/2017] [Accepted: 08/27/2017] [Indexed: 11/17/2022] Open
Abstract
Being able to quantify ichthyotoxic metabolites from microalgae allows for the determination of ecologically-relevant concentrations that can be simulated in laboratory experiments, as well as to investigate bioaccumulation and degradation. Here, the ichthyotoxin karmitoxin, produced by Karlodinium armiger, was quantified in laboratory-grown cultures using high-performance liquid chromatography (HPLC) coupled to electrospray ionisation high-resolution time-of-flight mass spectrometry (HRMS). Prior to the quantification of karmitoxin, a standard of karmitoxin was purified from K. armiger cultures (80 L). The standard was quantified by fluorescent derivatisation using Waters AccQ-Fluor reagent and derivatised fumonisin B₁ and fumonisin B₂ as standards, as each contain a primary amine. Various sample preparation methods for whole culture samples were assessed, including six different solid phase extraction substrates. During analysis of culture samples, MS source conditions were monitored with chloramphenicol and valinomycin as external standards over prolonged injection sequences (>12 h) and karmitoxin concentrations were determined using the response factor of a closely eluting iturin A2 internal standard. Using this method the limit of quantification was 0.11 μg·mL-1, and the limit of detection was found to be 0.03 μg·mL-1. Matrix effects were determined with the use of K. armiger cultures grown with 13C-labelled bicarbonate as the primary carbon source.
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The Missing Piece in Biosynthesis of Amphidinols: First Evidence of Glycolate as a Starter Unit in New Polyketides from Amphidinium carterae. Mar Drugs 2017; 15:md15060157. [PMID: 28561749 PMCID: PMC5484107 DOI: 10.3390/md15060157] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 05/22/2017] [Accepted: 05/25/2017] [Indexed: 11/23/2022] Open
Abstract
Two new members of the amphidinol family, amphidinol A (1) and its 7-sulfate derivative amphidinol B (2), were isolated from a strain of Amphidinium carterae of Lake Fusaro, near Naples (Italy), and chemically identified by spectroscopic and spectrometric methods. Amphidinol A showed antifungal activity against Candida albicans (MIC = 19 µg/mL). Biosynthetic experiments with stable isotope-labelled acetate allowed defining the elongation process in 1. For the first time the use of glycolate as a starter unit in the polyketide biosynthesis of amphidinol metabolites was unambiguously demonstrated.
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Rasmussen SA, Andersen AJC, Andersen NG, Nielsen KF, Hansen PJ, Larsen TO. Chemical Diversity, Origin, and Analysis of Phycotoxins. JOURNAL OF NATURAL PRODUCTS 2016; 79:662-673. [PMID: 26901085 DOI: 10.1021/acs.jnatprod.5b01066] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Microalgae, particularly those from the lineage Dinoflagellata, are very well-known for their ability to produce phycotoxins that may accumulate in the marine food chain and eventually cause poisoning in humans. This includes toxins accumulating in shellfish, such as saxitoxin, okadaic acid, yessotoxins, azaspiracids, brevetoxins, and pinnatoxins. Other toxins, such as ciguatoxins and maitotoxins, accumulate in fish, where, as is the case for the latter compounds, they can be metabolized to even more toxic metabolites. On the other hand, much less is known about the chemical nature of compounds that are toxic to fish, the so-called ichthyotoxins. Despite numerous reports of algal blooms causing massive fish kills worldwide, only a few types of compounds, such as the karlotoxins, have been proven to be true ichthyotoxins. This review will highlight marine microalgae as the source of some of the most complex natural compounds known to mankind, with chemical structures that show no resemblance to what has been characterized from plants, fungi, or bacteria. In addition, it will summarize algal species known to be related to fish-killing blooms, but from which ichthyotoxins are yet to be characterized.
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Affiliation(s)
- Silas Anselm Rasmussen
- Department of Systems Biology, Technical University of Denmark , Søltofts Plads 221, Kongens Lyngby, Denmark
| | | | - Nikolaj Gedsted Andersen
- Marine Biological Section, Department of Biology, Copenhagen University , Strandpromenaden 5, Helsingør, Denmark
| | - Kristian Fog Nielsen
- Department of Systems Biology, Technical University of Denmark , Søltofts Plads 221, Kongens Lyngby, Denmark
| | - Per Juel Hansen
- Marine Biological Section, Department of Biology, Copenhagen University , Strandpromenaden 5, Helsingør, Denmark
| | - Thomas Ostenfeld Larsen
- Department of Systems Biology, Technical University of Denmark , Søltofts Plads 221, Kongens Lyngby, Denmark
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Yue Y, Yu H, Li R, Xing R, Liu S, Li P. Exploring the Antibacterial and Antifungal Potential of Jellyfish-Associated Marine Fungi by Cultivation-Dependent Approaches. PLoS One 2015; 10:e0144394. [PMID: 26637162 PMCID: PMC4670088 DOI: 10.1371/journal.pone.0144394] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 11/17/2015] [Indexed: 11/18/2022] Open
Abstract
Fungi isolated from marine invertebrates are of considerable importance as new promising sources of unique secondary metabolites with significant biomedical potential. However, the cultivable fungal community harbored in jellyfish was less investigated. In this work, we seek to recover symbiotic fungi from different tissues of jellyfish Nemopilema nomurai. A total of seven morphotypes were isolated, which were assigned into four genera (Aspergillus, Cladosporium, Purpureocillium, and Tilletiopsis) from two phyla (Ascomycota and Basidiomycota) by comparing the rDNA-ITS sequences with the reference sequences in GenBank. The most fungi were found in the inner tissues of subumbrella. Two of the cultivation-independent procedures, changing media type and co-cultivation, were employed to maximize the complexity of metabolites. Thus, thirteen EtOAc gum were obtained and fingerprinted by High Performance Liquid Chromatography (HPLC) equipped with a photodiode array (PDA) detector. Antibacterial and antifungal activities of these complex mixtures were tested against a panel of bacterial and fungal pathogens. The antimicrobial results showed that all of the 13 EtOAc extracts displayed different levels of antibacterial activity, three of which exhibited strong to significant antibacterial activity to the bacterial pathogens Staphylococcus aureus and Salmonella entrica. Antifungal activity indicated that the EtOAc extracts from pure culture of Aspergillus versicolor and co-culture of A. versicolor and Tilletiopsis sp. in rice media were promising for searching new compounds, with the maximal mycelial growth inhibition of 82.32% ± 0.61% for Rhizoctonia solani and 48.41% ± 11.02% for Botrytis cinerea at 200 μg/ml, respectively. This study is the first report on the antibacterial and antifungal activity of jellyfish-associated fungi and allows the first sight into cultivable fungal community residing in jellyfish. Induced metabolites by cultivation-dependent approaches provides a new reservoir for drug discovery from jellyfish-derived fungi.
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Affiliation(s)
- Yang Yue
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- University of the Chinese Academy of Sciences, Beijing, China
| | - Huahua Yu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- * E-mail: (HHY); (PCL)
| | - Rongfeng Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Ronge Xing
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Song Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Pengcheng Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
- * E-mail: (HHY); (PCL)
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16
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Amdigenols E and G, long carbon-chain polyol compounds, isolated from the marine dinoflagellate Amphidinium sp. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.09.094] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Nuzzo G, Cutignano A, Sardo A, Fontana A. Antifungal amphidinol 18 and its 7-sulfate derivative from the marine dinoflagellate Amphidinium carterae. JOURNAL OF NATURAL PRODUCTS 2014; 77:1524-1527. [PMID: 24926538 DOI: 10.1021/np500275x] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Two new polyketides of the amphidinol family, amphidinol 18 (AM18, 1) and its corresponding 7-sulfate derivative (AM19, 2), have been isolated from the MeOH extract of the dinoflagellate Amphidinium carterae. Structure elucidation of the two polyoxygenated molecules has been accomplished by extensive use of spectroscopic and spectrometric techniques. AM18 exhibited antifungal activity against Candida albicans at 9 μg/mL.
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Affiliation(s)
- Genoveffa Nuzzo
- CNR, Istituto di Chimica Biomolecolare , Via Campi Flegrei 34, 80078, Pozzuoli, Naples, Italy
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18
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Espiritu RA, Matsumori N, Tsuda M, Murata M. Direct and stereospecific interaction of amphidinol 3 with sterol in lipid bilayers. Biochemistry 2014; 53:3287-93. [PMID: 24773476 DOI: 10.1021/bi5002932] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Amphidinol 3 (AM3), a polyhydroxy-polyene metabolite from the dinoflagellate Amphidinium klebsii, possesses potent antifungal activity. Although AM3 permeabilizes phospholipid membranes only in the presence of sterol, the detailed molecular basis by which AM3 recognizes sterols in membranes remains unknown. Here, we investigated the molecular interaction between sterols and AM3 in membranes from the viewpoint of stereospecific molecular recognition using ergosterol, cholesterol, and epicholesterol, which is the 3-OH epimer of cholesterol. Dye leakage assays, surface plasmon resonance experiments, (2)H and (31)P NMR measurements, and microscopic observations revealed that AM3 directly interacts with membrane sterols through the strict molecular recognition of the stereochemistry of the sterol 3-OH group. The direct interaction enhances the membrane binding efficiency of AM3, which subsequently permeabilizes membranes without altering membrane integrity.
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Affiliation(s)
- Rafael Atillo Espiritu
- Department of Chemistry, Graduate School of Science, Osaka University , Osaka 560-0043, Japan
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19
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Alcaide B, Almendros P, Martínez del Campo T, Quirós MT, Soriano E, Marco-Contelles JL. Controlled Heterocyclization/Cross-Coupling Domino Reaction of β,γ-Allendiols and α-Allenic Esters: Method and Mechanistic Insight for the Preparation of Functionalized Buta-1,3-dienyl Dihydropyrans. Chemistry 2013; 19:14233-44. [DOI: 10.1002/chem.201300774] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Revised: 07/02/2013] [Indexed: 11/09/2022]
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20
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Mayer AMS, Rodríguez AD, Taglialatela-Scafati O, Fusetani N. Marine pharmacology in 2009-2011: marine compounds with antibacterial, antidiabetic, antifungal, anti-inflammatory, antiprotozoal, antituberculosis, and antiviral activities; affecting the immune and nervous systems, and other miscellaneous mechanisms of action. Mar Drugs 2013; 11:2510-73. [PMID: 23880931 PMCID: PMC3736438 DOI: 10.3390/md11072510] [Citation(s) in RCA: 169] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 06/04/2013] [Accepted: 06/14/2013] [Indexed: 12/13/2022] Open
Abstract
The peer-reviewed marine pharmacology literature from 2009 to 2011 is presented in this review, following the format used in the 1998–2008 reviews of this series. The pharmacology of structurally-characterized compounds isolated from marine animals, algae, fungi and bacteria is discussed in a comprehensive manner. Antibacterial, antifungal, antiprotozoal, antituberculosis, and antiviral pharmacological activities were reported for 102 marine natural products. Additionally, 60 marine compounds were observed to affect the immune and nervous system as well as possess antidiabetic and anti-inflammatory effects. Finally, 68 marine metabolites were shown to interact with a variety of receptors and molecular targets, and thus will probably contribute to multiple pharmacological classes upon further mechanism of action studies. Marine pharmacology during 2009–2011 remained a global enterprise, with researchers from 35 countries, and the United States, contributing to the preclinical pharmacology of 262 marine compounds which are part of the preclinical pharmaceutical pipeline. Continued pharmacological research with marine natural products will contribute to enhance the marine pharmaceutical clinical pipeline, which in 2013 consisted of 17 marine natural products, analogs or derivatives targeting a limited number of disease categories.
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Affiliation(s)
- Alejandro M. S. Mayer
- Department of Pharmacology, Chicago College of Osteopathic Medicine, Midwestern University, 555 31st Street, Downers Grove, Illinois 60515, USA
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-630-515-6951; Fax: +1-630-971-6414
| | - Abimael D. Rodríguez
- Department of Chemistry, University of Puerto Rico, San Juan, Puerto Rico 00931, USA; E-Mail:
| | - Orazio Taglialatela-Scafati
- Department of Pharmacy, University of Naples “Federico II”, Via D. Montesano 49, I-80131 Napoli, Italy; E-Mail:
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21
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Murray SA, Garby T, Hoppenrath M, Neilan BA. Genetic diversity, morphological uniformity and polyketide production in dinoflagellates (Amphidinium, Dinoflagellata). PLoS One 2012; 7:e38253. [PMID: 22675531 PMCID: PMC3366924 DOI: 10.1371/journal.pone.0038253] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Accepted: 05/06/2012] [Indexed: 11/19/2022] Open
Abstract
Dinoflagellates are an intriguing group of eukaryotes, showing many unusual morphological and genetic features. Some groups of dinoflagellates are morphologically highly uniform, despite indications of genetic diversity. The species Amphidinium carterae is abundant and cosmopolitan in marine environments, grows easily in culture, and has therefore been used as a 'model' dinoflagellate in research into dinoflagellate genetics, polyketide production and photosynthesis. We have investigated the diversity of 'cryptic' species of Amphidinium that are morphologically similar to A. carterae, including the very similar species Amphidinium massartii, based on light and electron microscopy, two nuclear gene regions (LSU rDNA and ITS rDNA) and one mitochondrial gene region (cytochrome b). We found that six genetically distinct cryptic species (clades) exist within the species A. massartii and four within A. carterae, and that these clades differ from one another in molecular sequences at levels comparable to other dinoflagellate species, genera or even families. Using primers based on an alignment of alveolate ketosynthase sequences, we isolated partial ketosynthase genes from several Amphidinium species. We compared these genes to known dinoflagellate ketosynthase genes and investigated the evolution and diversity of the strains of Amphidinium that produce them.
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Affiliation(s)
- Shauna A Murray
- School of Biotechnology and Biomolecular Sciences and Evolution and Ecology Research Centre, University of New South Wales, New South Wales, Sydney, Australia.
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22
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Abstract
Toxic substances that occur in nature have various structures and functions. In fact, the very novelty of their structures and functions sometimes extends far beyond the realm of human imagination, and the capabilities of these compounds are still largely untapped despite the major advances of modern science. In this report we focus on the most recent developments in this field, with a particular emphasis on natural venoms, marine sunscreen, and marine huge molecules.
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Affiliation(s)
- Daisuke Uemura
- 1Department of Chemistry, Faculty of Science, Kanagawa University, Tsuchiya 2946, Hiratsuka, Kanagawa 259-1293, Japan
| | - Chunguang Han
- 2Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan
| | - Novriyandi Hanif
- 2Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8602, Japan
| | - Toshiyasu Inuzuka
- 3Life Science Research Center, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
| | - Norihito Maru
- 1Department of Chemistry, Faculty of Science, Kanagawa University, Tsuchiya 2946, Hiratsuka, Kanagawa 259-1293, Japan
| | - Hirokazu Arimoto
- 4Graduate School of Life Science, Tohoku University, Katahira 2-1-1, Sendai, 981-8555, Japan
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23
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Amdigenol A, a long carbon-backbone polyol compound, produced by the marine dinoflagellate Amphidinium sp. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.11.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Abstract
Covering: 2010. Previous review: Nat. Prod. Rep., 2011, 28, 196. This review covers the literature published in 2010 for marine natural products, with 895 citations (590 for the period January to December 2010) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1003 for 2010), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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25
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Lee TH, Lu CK, Wang GJ, Chang YC, Yang WB, Ju YM. Sesquiterpene glycosides from Cosmospora joca. JOURNAL OF NATURAL PRODUCTS 2011; 74:1561-1567. [PMID: 21682264 DOI: 10.1021/np200056e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Five novel sesquiterpene glycosides, namely, cosmosporasides A-E (1-5), were isolated from the ethyl acetate extract of the fermented broth of Cosmospora joca. The structures of 1-5 were elucidated on the basis of spectroscopic data analyses, monosaccharide composition analyses, and monosaccharide chirality analyses. The relative configuration of the sesquiterpene moiety of 3-5 was determined by J-based configuration analyses and supported by NOESY assignments. The inhibitory effects of 1-5 on the nitric oxide (NO) production in lipopolysaccharide (LPS)-activated murine macrophage RAW264.7 cells were evaluated; all except 3 inhibited NO production at 100 μM. 4 was the most potent, with an average maximum inhibition and a median inhibitory concentration value of 71.70 ± 1.23% and 65.98 ± 0.53 μM, respectively.
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Affiliation(s)
- Tzong-Huei Lee
- Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei, Taiwan 110, Republic of China.
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26
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Sugahara K, Kitamura Y, Murata M, Satake M, Tachibana K. Prorocentrol, a Polyoxy Linear Carbon Chain Compound Isolated from the Toxic Dinoflagellate Prorocentrum hoffmannianum. J Org Chem 2011; 76:3131-8. [DOI: 10.1021/jo102585k] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kohtaro Sugahara
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoshiaki Kitamura
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Michio Murata
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masayuki Satake
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazuo Tachibana
- Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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