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Bracegirdle J, Hou P, Nowak VV, Ackerley DF, Keyzers RA, Owen JG. Skyllamycins D and E, Non-Ribosomal Cyclic Depsipeptides from Lichen-Sourced Streptomyces anulatus. J Nat Prod 2021; 84:2536-2543. [PMID: 34490774 DOI: 10.1021/acs.jnatprod.1c00547] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The skyllamycins are a class of heavily modified, non-ribosomal peptides, first isolated from Streptomyces sp. KY11784. A Streptomyces strain with potent antibiotic activity against Bacillus subtilis was isolated from a sample of the New Zealand lichen Pseudocyphellaria dissimilis. Whole genome sequencing and biosynthetic gene cluster genetic analysis coupled with GNPS LCMS/MS molecular networking revealed that this strain had the capacity to produce skyllamycins, including previously undescribed congeners, and that these were likely the source of the observed biological activity. Guided by the results of the molecular networking, we isolated the previously reported skyllamycins A-C (1-3), along with two new congeners, skyllamycins D (4) and E (5). The structures of these compounds were elucidated using comprehensive 1D and 2D NMR analyses, along with HRESIMS fragmentation experiments. Antibacterial assays revealed that skyllamycin D possessed improved activity against B. subtilis E168 compared to previously reported congeners.
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Walser V, Kranzler M, Ehling-Schulz M, Stark TD, Hofmann TF. Structure Revision of Isocereulide A, an Isoform of the Food Poisoning Emetic Bacillus cereus Toxin Cereulide. Molecules 2021; 26:molecules26051360. [PMID: 33806334 PMCID: PMC7961578 DOI: 10.3390/molecules26051360] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 02/25/2021] [Accepted: 02/26/2021] [Indexed: 12/13/2022] Open
Abstract
The emetic Bacillus cereus toxin cereulide presents an enormous safety hazard in the food industry, inducing emesis and nausea after the consumption of contaminated foods. Additional to cereulide itself, seven structurally related isoforms, namely the isocereulides A–G, have already been elucidated in their chemical structure and could further be identified in B. cereus contaminated food samples. The newly performed isolation of isocereulide A allowed, for the first time, 1D- and 2D-NMR spectroscopy of a biosynthetically produced isocereulide, revealing results that contradict previous assumptions of an l-O-Leu moiety within its chemical structure. By furthermore applying posthydrolytical dipeptide analysis, amino acid and α-hydroxy acid analysis by means of UPLC-ESI-TOF-MS, as well as MSn sequencing, the structure of previously reported isocereulide A could be corrected. Instead of the l-O-Leu as assumed to date, one l-O-Ile unit could be verified in the cyclic dodecadepsipeptide, revising the structure of isocereulide A to [(d-O-Leu-d-Ala-l-O-Val-l-Val)2(d-O-Leu-d-Ala-l-O-Ile-l-Val)].
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Affiliation(s)
- Veronika Walser
- Food Chemistry and Molecular Sensory Science, Technical University of Munich, Lise-Meitner-Str. 34, 85354 Freising, Germany; (V.W.); (T.F.H.)
| | - Markus Kranzler
- Institute of Microbiology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria; (M.K.); (M.E.-S.)
| | - Monika Ehling-Schulz
- Institute of Microbiology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria; (M.K.); (M.E.-S.)
| | - Timo D. Stark
- Food Chemistry and Molecular Sensory Science, Technical University of Munich, Lise-Meitner-Str. 34, 85354 Freising, Germany; (V.W.); (T.F.H.)
- Correspondence: ; Tel.: +49-8161-71-2911
| | - Thomas F. Hofmann
- Food Chemistry and Molecular Sensory Science, Technical University of Munich, Lise-Meitner-Str. 34, 85354 Freising, Germany; (V.W.); (T.F.H.)
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3
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Abstract
The latest chapter of the historic battle of humans against pathogenic microbes is the severe acute respiratory syndrome (SARS)-like coronavirus-2 (SARS-CoV-2), responsible for COVID-19, a respiratory disease declared a global pandemic by the WHO on March 11, 2020 [...].
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Affiliation(s)
- Orazio Taglialatela-Scafati
- Department of Pharmacy, School of Medicine and Surgery, University of Naples Federico II, Via D. Montesano 49, I-80131 Naples, Italy
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4
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Kalbhenn EM, Bauer T, Stark TD, Knüpfer M, Grass G, Ehling-Schulz M. Detection and Isolation of Emetic Bacillus cereus Toxin Cereulide by Reversed Phase Chromatography. Toxins (Basel) 2021; 13:toxins13020115. [PMID: 33557428 PMCID: PMC7915282 DOI: 10.3390/toxins13020115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/30/2021] [Accepted: 02/01/2021] [Indexed: 12/17/2022] Open
Abstract
The emetic toxin cereulide is a 1.2 kDa dodecadepsipeptide produced by the food pathogen Bacillus cereus. As cereulide poses a serious health risk to humans, sensitive and specific detection, as well as toxin purification and quantification, methods are of utmost importance. Recently, a stable isotope dilution assay tandem mass spectrometry (SIDA–MS/MS)-based method has been described, and an method for the quantitation of cereulide in foods was established by the International Organization for Standardization (ISO). However, although this SIDA–MS/MS method is highly accurate, the sophisticated high-end MS equipment required for such measurements limits the method’s suitability for microbiological and molecular research. Thus, we aimed to develop a method for cereulide toxin detection and isolation using equipment commonly available in microbiological and biochemical research laboratories. Reproducible detection and relative quantification of cereulide was achieved, employing reversed phase chromatography (RPC). Chromatographic signals were cross validated by ultraperformance liquid chromatography–mass spectrometry (UPLC–MS/MS). The specificity of the RPC method was tested using a test panel of strains that included non-emetic representatives of the B. cereus group, emetic B. cereus strains, and cereulide-deficient isogenic mutants. In summary, the new method represents a robust, economical, and easily accessible research tool that complements existing diagnostics for the detection and quantification of cereulide.
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Affiliation(s)
- Eva Maria Kalbhenn
- Functional Microbiology, Institute of Microbiology, Department of Pathobiology, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (E.M.K.); (T.B.)
| | - Tobias Bauer
- Functional Microbiology, Institute of Microbiology, Department of Pathobiology, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (E.M.K.); (T.B.)
| | - Timo D. Stark
- Chair of Food Chemistry and Molecular Sensory Science, Technical University of Munich, Lise-Meitner-Straße 34, 85354 Freising, Germany;
| | - Mandy Knüpfer
- Bundeswehr Institute of Microbiology, Neuherbergstraße 11, 80937 Munich, Germany; (M.K.); (G.G.)
| | - Gregor Grass
- Bundeswehr Institute of Microbiology, Neuherbergstraße 11, 80937 Munich, Germany; (M.K.); (G.G.)
| | - Monika Ehling-Schulz
- Functional Microbiology, Institute of Microbiology, Department of Pathobiology, University of Veterinary Medicine Vienna, 1210 Vienna, Austria; (E.M.K.); (T.B.)
- Correspondence:
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5
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Liu Z, Sun Y, Tang M, Sun P, Wang A, Hao Y, Wang Y, Pei Y. Trichodestruxins A-D: Cytotoxic Cyclodepsipeptides from the Endophytic Fungus Trichoderma harzianum. J Nat Prod 2020; 83:3635-3641. [PMID: 33301677 DOI: 10.1021/acs.jnatprod.0c00808] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Four new cyclodepsipeptides, trichodestruxins A-D (1-4), together with destruxin E2 chlorohydrin (5) and destruxin A2 (6), were isolated from the plant endophytic fungus Trichoderma harzianum by a bioassay-guided fractionation method. Their planar structures were elucidated on the basis of 1D and 2D NMR and MS/MS spectroscopic analyses. The stereochemical configuration was established by application of the advanced Marfey's method, J-based configuration analysis, Mosher's method, and chemical derivatizations. Trichodestruxin B contains hydroxy acid fragments of the THPA unit, while trichodestruxins A and C contain the β-methylproline moiety. All cyclodepsipeptides displayed cytotoxicity against HT-29, A549, and/or P388 cell lines with IC50 values of 0.7-19.1 μM.
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Affiliation(s)
- Zhiguo Liu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, People's Republic of China
| | - Yi Sun
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, People's Republic of China
| | - Mengyue Tang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, People's Republic of China
- School of Pharmacy, Harbin Medical University, Harbin 150081, People's Republic of China
| | - Peng Sun
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, People's Republic of China
| | - Anqi Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, People's Republic of China
| | - Yanqi Hao
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, People's Republic of China
| | - Yanan Wang
- Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Yuehu Pei
- School of Pharmacy, Harbin Medical University, Harbin 150081, People's Republic of China
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6
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Polyzois A, Kirilovsky D, Dufat TH, Michel S. Effects of Modification of Light Parameters on the Production of Cryptophycin, Cyanotoxin with Potent Anticancer Activity, in Nostoc sp. Toxins (Basel) 2020; 12:toxins12120809. [PMID: 33371249 PMCID: PMC7766261 DOI: 10.3390/toxins12120809] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 02/03/2023] Open
Abstract
Cryptophycin-1 is a cyanotoxin produced by filamentous cyanobacteria. It has been evaluated as an anticancer agent with great potential. However, its synthesis provides insufficient yield for industrial use. An alternative solution for metabolite efficient production is to stress cyanobacteria by modifying the environmental conditions of the culture (Nostoc sp. ATCC 53789). Here, we examined the effects of light photoperiod, wavelength, and intensity. In light photoperiod, photoperiods 24:0 and 16:8 (light:dark) were tested while in wavelength, orange-red light was compared with blue. Medium, high, and very high light intensity experiments were performed to test the effect of light stress. For a 10-day period, growth was measured, metabolite concentration was calculated through HPLC, and the related curves were drawn. The differentiation of light wavelength had a major effect on the culture, as orange-red filter contributed to noticeable increase in both growth and doubled the cyanotoxin concentration in comparison to blue light. Remarkably, constant light provides higher cryptophycin yield, but slightly lower growth rate. Lastly, the microorganism prefers medium light intensities for both growth and metabolite expression. The combination of these optimal conditions would contribute to the further exploitation of cryptophycin.
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Affiliation(s)
- Alexandros Polyzois
- Produits Naturels, Analyse et Synthèse, Université de Paris, UMR CNRS 8038 CITCOM, Faculté de Pharmacie de Paris, 75006 Paris, France;
- Correspondence: (A.P.); (S.M.); Tel.: +33-153739803 (S.M.)
| | - Diana Kirilovsky
- Institute for Integrative Biology of the Cell (12BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette, France;
| | - Thi-hanh Dufat
- Produits Naturels, Analyse et Synthèse, Université de Paris, UMR CNRS 8038 CITCOM, Faculté de Pharmacie de Paris, 75006 Paris, France;
| | - Sylvie Michel
- Produits Naturels, Analyse et Synthèse, Université de Paris, UMR CNRS 8038 CITCOM, Faculté de Pharmacie de Paris, 75006 Paris, France;
- Correspondence: (A.P.); (S.M.); Tel.: +33-153739803 (S.M.)
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7
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Dashti Y, Nakou IT, Mullins AJ, Webster G, Jian X, Mahenthiralingam E, Challis GL. Discovery and Biosynthesis of Bolagladins: Unusual Lipodepsipeptides from Burkholderia gladioli Clinical Isolates*. Angew Chem Int Ed Engl 2020; 59:21553-21561. [PMID: 32780452 PMCID: PMC7756342 DOI: 10.1002/anie.202009110] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Indexed: 01/01/2023]
Abstract
Two Burkholderia gladioli strains isolated from the lungs of cystic fibrosis patients were found to produce unusual lipodepsipeptides containing a unique citrate-derived fatty acid and a rare dehydro-β-alanine residue. The gene cluster responsible for their biosynthesis was identified by bioinformatics and insertional mutagenesis. In-frame deletions and enzyme activity assays were used to investigate the functions of several proteins encoded by the biosynthetic gene cluster, which was found in the genomes of about 45 % of B. gladioli isolates, suggesting that its metabolic products play an important role in the growth and/or survival of the species. The Chrome Azurol S assay indicated that these metabolites bind ferric iron, which suppresses their production when added to the growth medium. Moreover, a gene encoding a TonB-dependent ferric-siderophore receptor is adjacent to the biosynthetic genes, suggesting that these metabolites may function as siderophores in B. gladioli.
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Affiliation(s)
- Yousef Dashti
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
- Current address: The Centre for Bacterial Cell BiologyBiosciences InstituteMedical SchoolNewcastle UniversityNewcastle upon TyneNE2 4AXUK
| | - Ioanna T. Nakou
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
| | - Alex J. Mullins
- Microbiomes, Microbes and Informatics GroupOrganisms and Environment DivisionSchool of BiosciencesCardiff UniversityCardiffCF103 ATUK
| | - Gordon Webster
- Microbiomes, Microbes and Informatics GroupOrganisms and Environment DivisionSchool of BiosciencesCardiff UniversityCardiffCF103 ATUK
| | - Xinyun Jian
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
- Warwick Integrative Synthetic Biology CentreUniversity of WarwickCoventryCV4 7ALUK
| | - Eshwar Mahenthiralingam
- Microbiomes, Microbes and Informatics GroupOrganisms and Environment DivisionSchool of BiosciencesCardiff UniversityCardiffCF103 ATUK
| | - Gregory L. Challis
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
- Warwick Integrative Synthetic Biology CentreUniversity of WarwickCoventryCV4 7ALUK
- Department of Biochemistry and Molecular Biology, ARC Centre of Excellence for Innovations in Peptide and Protein ScienceMonash UniversityClaytonVIC3800Australia
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8
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Flores-Holguín N, Frau J, Glossman-Mitnik D. Virtual Screening of Marine Natural Compounds by Means of Chemoinformatics and CDFT-Based Computational Peptidology. Mar Drugs 2020; 18:E478. [PMID: 32962305 PMCID: PMC7551818 DOI: 10.3390/md18090478] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/16/2020] [Accepted: 09/17/2020] [Indexed: 11/29/2022] Open
Abstract
This work presents the results of a computational study of the chemical reactivity and bioactivity properties of the members of the theopapuamides A-D family of marine peptides by making use of our proposed methodology named Computational Peptidology (CP) that has been successfully considered in previous studies of this kind of molecular system. CP allows for the determination of the global and local descriptors that come from Conceptual Density Functional Theory (CDFT) that can give an idea about the chemical reactivity properties of the marine natural products under study, which are expected to be related to their bioactivity. At the same time, the validity of the procedure based on the adoption of the KID (Koopmans In DFT) technique, as well as the MN12SX/Def2TZVP/H2O model chemistry is successfully verified. Together with several chemoinformatic tools that can be used to improve the process of virtual screening, some additional properties of these marine peptides are identified related to their ability to behave as useful drugs. With the further objective of analyzing their bioactivity, some useful parameters for future QSAR studies, their predicted biological targets, and the ADMET (Absorption, Distribution, Metabolism, Excretion and Toxicity) parameters related to the theopapuamides A-D pharmacokinetics are also reported.
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Affiliation(s)
- Norma Flores-Holguín
- Laboratorio Virtual NANOCOSMOS, Departamento de Medio Ambiente y Energía, Centro de Investigación en Materiales Avanzados, Chihuahua, Chih 31136, Mexico;
| | - Juan Frau
- Departament de Química, Universitat de les Illes Balears, E-07122 Palma de Malllorca, Spain;
| | - Daniel Glossman-Mitnik
- Laboratorio Virtual NANOCOSMOS, Departamento de Medio Ambiente y Energía, Centro de Investigación en Materiales Avanzados, Chihuahua, Chih 31136, Mexico;
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9
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Mauro M, Lazzara V, Punginelli D, Arizza V, Vazzana M. Antitumoral compounds from vertebrate sister group: A review of Mediterranean ascidians. Dev Comp Immunol 2020; 108:103669. [PMID: 32192994 DOI: 10.1016/j.dci.2020.103669] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/02/2020] [Accepted: 03/02/2020] [Indexed: 06/10/2023]
Abstract
Among the diseases that afflict the human population, cancer is one for which many drug treatments are not yet known or effective. Moreover, the pharmacological treatments used often create serious side effects in sick patients and for this reason, it is essential to find effective and less harmful treatments. To date, marine biodiversity is a real source of metabolites with antitumoral activity and among invertebrates' ascidians have been the main source to obtain them. Mediterranean area is the richest in biodiversity and contains several ascidian species used in drugs development during the years. However, many more Mediterranean ascidian species have not been studied and could be a source of useful bioactive compounds. This review aims to summarize the scientific studies that analyzed the antitumor compounds obtained from different Mediterranean ascidians species, encouraging them to search further compounds in other new species to improve pharmacological treatments and human population life.
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Affiliation(s)
- Manuela Mauro
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi, 18-90123 Palermo, Italy.
| | - Valentina Lazzara
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi, 18-90123 Palermo, Italy
| | - Diletta Punginelli
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi, 18-90123 Palermo, Italy
| | - Vincenzo Arizza
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi, 18-90123 Palermo, Italy
| | - Mirella Vazzana
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi, 18-90123 Palermo, Italy
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10
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Torres JP, Lin Z, Fenton DS, Leavitt LU, Niu C, Lam PY, Robes JM, Peterson RT, Concepcion GP, Haygood MG, Olivera BM, Schmidt EW. Boholamide A, an APD-Class, Hypoxia-Selective Cyclodepsipeptide. J Nat Prod 2020; 83:1249-1257. [PMID: 32186874 PMCID: PMC10172148 DOI: 10.1021/acs.jnatprod.0c00038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Calcium homeostasis is implicated in some cancers, leading to the possibility that selective control of calcium might lead to new cancer drugs. On the basis of this idea, we designed an assay using a glioblastoma cell line and screened a collection of 1000 unique bacterial extracts. Isolation of the active compound from a hit extract led to the identification of boholamide A (1), a 4-amido-2,4-pentadieneoate (APD)-class peptide. Boholamide A (1) applied in the nanomolar range induces an immediate influx of Ca2+ in glioblastoma and neuronal cells. APD-class natural products are hypoxia-selective cytotoxins that primarily target mitochondria. Like other APD-containing compounds, 1 is hypoxia selective. Since APD natural products have received significant interest as potential chemotherapeutic agents, 1 provides a novel APD scaffold for the development of new anticancer compounds.
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Affiliation(s)
- Joshua P Torres
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Zhenjian Lin
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - David S Fenton
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Lee U Leavitt
- School of Biological Sciences, University of Utah, Salt Lake City, Utah 84112, United States
| | - Changshan Niu
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Pui-Ying Lam
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah 84112, United States
| | - Jose Miguel Robes
- The Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines
| | - Randall T Peterson
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, Utah 84112, United States
| | - Gisela P Concepcion
- The Marine Science Institute, University of the Philippines, Diliman, Quezon City 1101, Philippines
| | - Margo G Haygood
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
| | - Baldomero M Olivera
- School of Biological Sciences, University of Utah, Salt Lake City, Utah 84112, United States
| | - Eric W Schmidt
- Department of Medicinal Chemistry, University of Utah, Salt Lake City, Utah 84112, United States
- School of Biological Sciences, University of Utah, Salt Lake City, Utah 84112, United States
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11
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Kim CK, Wang D, Bokesch HR, Fuller RW, Smith E, Henrich CJ, Durrant DE, Morrison DK, Bewley CA, Gustafson KR. Swinhopeptolides A and B: Cyclic Depsipeptides from the Sponge Theonella swinhoei That Inhibit Ras/Raf Interaction. J Nat Prod 2020; 83:1288-1294. [PMID: 32191460 PMCID: PMC7183427 DOI: 10.1021/acs.jnatprod.0c00136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Two new cyclic depsipeptides named swinhopeptolides A (1) and B (2) have been isolated from the marine sponge Theonella swinhoei cf. verrucosa, collected from Papua New Guinea. They each contain 11 diverse amino acid residues and 13-carbon polyketide moieties attached at the N-terminus. Compounds 1 and 2 each exist as two conformers in DMSO-d6 due to cis/trans isomerism of the proline residue, and their structures were successfully assigned by extensive NMR analyses complemented by chemical degradation and derivatization studies. Swinhopeptolide B (2) contains a previously undescribed 2,6,8-trimethyldeca-(2E,4E,6E)-trienoic acid moiety N-linked to a terminal serine residue. Swinhopeptolides A (1) and B (2) showed significant inhibition of the Ras/Raf signaling pathway with IC50 values of 5.8 and 8.5 μM, respectively.
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Affiliation(s)
- Chang-Kwon Kim
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Dongdong Wang
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Heidi R. Bokesch
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702-1201, United States
| | - Richard W. Fuller
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Emily Smith
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702-1201, United States
| | - Curtis J. Henrich
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702-1201, United States
| | - David E. Durrant
- Laboratory of Cell and Developmental Signaling, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Deborah K. Morrison
- Laboratory of Cell and Developmental Signaling, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Carole A. Bewley
- Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, Maryland 20814, United States
| | - Kirk R. Gustafson
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
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12
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Li Y, Yu HB, Zhang Y, Leao T, Glukhov E, Pierce ML, Zhang C, Kim H, Mao HH, Fang F, Cottrell GW, Murray TF, Gerwick L, Guan H, Gerwick WH. Pagoamide A, a Cyclic Depsipeptide Isolated from a Cultured Marine Chlorophyte, Derbesia sp., Using MS/MS-Based Molecular Networking. J Nat Prod 2020; 83:617-625. [PMID: 31916778 PMCID: PMC7210564 DOI: 10.1021/acs.jnatprod.9b01019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
A thiazole-containing cyclic depsipeptide with 11 amino acid residues, named pagoamide A (1), was isolated from laboratory cultures of a marine Chlorophyte, Derbesia sp. This green algal sample was collected from America Samoa, and pagoamide A was isolated using guidance by MS/MS-based molecular networking. Cultures were grown in a light- and temperature-controlled environment and harvested after several months of growth. The planar structure of pagoamide A (1) was characterized by detailed 1D and 2D NMR experiments along with MS and UV analysis. The absolute configurations of its amino acid residues were determined by advanced Marfey's analysis following chemical hydrolysis and hydrazinolysis reactions. Two of the residues in pagoamide A (1), phenylalanine and serine, each occurred twice in the molecule, once in the d- and once in the l-configuration. The biosynthetic origin of pagoamide A (1) was considered in light of other natural products investigations with coenocytic green algae.
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Affiliation(s)
- Yueying Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
- University of California, San Diego, La Jolla, California 92093, United States
| | - Hao-Bing Yu
- University of California, San Diego, La Jolla, California 92093, United States
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Second Military Medical University, Shanghai 200433, People’s Republic of China
| | - Yi Zhang
- University of California, San Diego, La Jolla, California 92093, United States
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, People’s Republic of China
| | - Tiago Leao
- University of California, San Diego, La Jolla, California 92093, United States
| | - Evgenia Glukhov
- University of California, San Diego, La Jolla, California 92093, United States
| | - Marsha L. Pierce
- Department of Pharmacology, School of Medicine, Creighton University, Omaha, Nebraska 68178, United States
| | - Chen Zhang
- University of California, San Diego, La Jolla, California 92093, United States
- Department of Computer Sciences and Engineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Hyunwoo Kim
- University of California, San Diego, La Jolla, California 92093, United States
| | - Huanru Henry Mao
- Department of Computer Sciences and Engineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Fang Fang
- University of California, San Diego, La Jolla, California 92093, United States
| | - Garrison W. Cottrell
- Department of Computer Sciences and Engineering, University of California, San Diego, La Jolla, California 92093, United States
| | - Thomas F. Murray
- Department of Pharmacology, School of Medicine, Creighton University, Omaha, Nebraska 68178, United States
| | - Lena Gerwick
- University of California, San Diego, La Jolla, California 92093, United States
| | - Huashi Guan
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People’s Republic of China
| | - William H. Gerwick
- University of California, San Diego, La Jolla, California 92093, United States
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, United States
- To whom correspondence should be addressed. Tel: (858)-534-0578.
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13
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Wang J, Weng Q, Yin F, Hu Q. Interactions of Destruxin A with Silkworms' Arginine tRNA Synthetase and Lamin-C Proteins. Toxins (Basel) 2020; 12:toxins12020137. [PMID: 32098437 PMCID: PMC7076788 DOI: 10.3390/toxins12020137] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/18/2020] [Accepted: 02/21/2020] [Indexed: 12/21/2022] Open
Abstract
Destruxin A (DA), a cyclodepsipeptidic mycotoxin produced by entomopathogenic fungus Metarhizium anisopliae, has good insecticidal activity and potential to be a new pesticide. However, the mechanism of action is still obscure. Our previous experiments showed that DA was involved in regulation of transcription and protein synthesis and suggested that silkworms’ arginine tRNA synthetase (BmArgRS), Lamin-C Proteins (BmLamin-C) and ATP-dependent RNA helicase PRP1 (BmPRP1) were candidates of DA-binding proteins. In this study, we employed bio-layer interferometry (BLI), circular dichroism (CD), cellular thermal shift assay (CETSA), and other technologies to verify the interaction of DA with above three proteins in vitro and in vivo. The results of BLI indicated that BmArgRS and BmLamin-C were binding-protein of DA with KD value 5.53 × 10−5 and 8.64 × 10−5 M, but not BmPRP1. These interactions were also verified by CD and CETSA tests. In addition, docking model and mutants assay in vitro showed that BmArgRS interacts with DA at the pocket including Lys228, His231, Asp434 and Gln437 in its enzyme active catalysis region, while BmLamin-C binds to DA at His524 and Lys528 in the tail domain. This study might provide new insight and evidence in illustrating molecular mechanism of DA in breaking insect.
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Soe TW, Han C, Fudou R, Kaida K, Sawaki Y, Tomura T, Ojika M. Clavariopsins C-I, Antifungal Cyclic Depsipeptides from the Aquatic Hyphomycete Clavariopsis aquatica. J Nat Prod 2019; 82:1971-1978. [PMID: 31244144 DOI: 10.1021/acs.jnatprod.9b00366] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Seven new cyclic depsipeptides, clavariopsins C-I (3-9), together with two known congeners, clavariopsins A and B (1 and 2), were isolated from the aquatic hyphomycete Clavariopsis aquatica. Their planar structures, which consist of nine amino acids and one α-hydroxy acid, were elucidated by NMR spectroscopy and HRESIMS. The absolute configurations were established by the advanced Marfey's method and chiral-phase HPLC analysis. Their antifungal and cytotoxic activities were evaluated against six plant pathogenic fungi (Botrytis cinerea, Magnaporthe oryzae, Colletotrichum orbiculare, Fusarium oxysporum, Alternaria alternata, and Aspergillus niger) and a cancer cell line (HeLa-S3), respectively. The majority of the compounds exhibited potent antifungal activity against the fungi tested (minimum inhibition dose = 0.01-10 μg/disk) and induced hyphal swelling in A. niger (minimum effective dose = 0.3-3 μg/disk), whereas the compounds exhibited no cytotoxicity toward the cancer cell line. The results suggest that the clavariopsins could be a promising class of antifungal agents.
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Affiliation(s)
- Thin Wut Soe
- Graduate School of Bioagricultural Sciences , Nagoya University , Chikusa-ku, Nagoya 464-8601 , Japan
- Department of Chemistry , University of Yangon , Yangon 11041 , Myanmar
| | - Chunguang Han
- Research Center for Materials Science , Nagoya University , Chikusa-ku, Nagoya 464-8602 , Japan
| | - Ryosuke Fudou
- R&D Planning Department , Ajinomoto Co., Inc. , Chuo-ku, Tokyo 104-8315 , Japan
| | - Kenichi Kaida
- Institute of Life Science , Ajinomoto Co., Inc. , Kawasaki , Kanagawa 210-8681 , Japan
| | - Yuki Sawaki
- Graduate School of Bioagricultural Sciences , Nagoya University , Chikusa-ku, Nagoya 464-8601 , Japan
| | - Tomohiko Tomura
- Graduate School of Bioagricultural Sciences , Nagoya University , Chikusa-ku, Nagoya 464-8601 , Japan
| | - Makoto Ojika
- Graduate School of Bioagricultural Sciences , Nagoya University , Chikusa-ku, Nagoya 464-8601 , Japan
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15
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Feng L, Wang J, Liu S, Zhang XJ, Bi QR, Hu YY, Wang Z, Tan NH. Colletopeptides A-D, Anti-inflammatory Cyclic Tridepsipeptides from the Plant Endophytic Fungus Colletotrichum sp. S8. J Nat Prod 2019; 82:1434-1441. [PMID: 31181925 DOI: 10.1021/acs.jnatprod.8b00829] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Four new hybrid peptide-polyketide cyclic tridepsipeptides, colletopeptides A-D (1-4), were isolated and characterized from the endophytic fungus Colletotrichum sp. S8 derived from the stems of Rubia podantha with the guidance of LC-UV-MS detection. Their structures were elucidated by extensive spectroscopic analysis and X-ray crystallography. Compounds 1-4 are rare natural 12-membered cyclic tridepsipeptides containing a 3,5,11-trihydroxy-2-methyl dodecanoic acid unit in their structures. 1-4 inhibited lipopolysaccharide-induced nitric oxide production in RAW264.7 macrophages with the IC50 values of 8.3, 38.7, 13.5, and 22.2 μM, respectively. 1 also inhibited the production of inflammatory factors IL-6 and TNF-α, and decreased the phosphorylation of NF-κB-associated proteins IκBα and p65.
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Affiliation(s)
- Li Feng
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Jia Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Shuai Liu
- Faculty of Life Science and Food Engineering , Huaiyin Institute of Technology , Huaian 223001 , People's Republic of China
| | - Xue-Jia Zhang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Qi-Rui Bi
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Yan-Yun Hu
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Zhe Wang
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
| | - Ning-Hua Tan
- Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy , China Pharmaceutical University , Nanjing 211198 , People's Republic of China
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16
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Jiang CX, Li J, Zhang JM, Jin XJ, Yu B, Fang JG, Wu QX. Isolation, Identification, and Activity Evaluation of Chemical Constituents from Soil Fungus Fusarium avenaceum SF-1502 and Endophytic Fungus Fusarium proliferatum AF-04. J Agric Food Chem 2019; 67:1839-1846. [PMID: 30688448 DOI: 10.1021/acs.jafc.8b05576] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Fusarium, a large genus of filamentous fungi, is widely distributed in soil and plants. Fusarium is a prolific source of novel chemical constituents with various bioactivities. In search for antibiotics from soil and endophytic fungi, the secondary metabolites of Fusarium avenaceum SF-1502 and Fusarium proliferatum AF-04 were investigated. An alkaloid (1), a depsipeptide (6), and five sesquiterpenoids (7-11) were isolated from the extracts of the soil fungus F. avenaceum SF-1502. Three alkaloids (2-4), a depsipeptide (5), three sesquiterpenoids (9, 11, and 12), a sesterterpene (13), and four 1,4-naphthoquinones (14-17) were also separated from the extract of the green Chinese onion derived fungus F. proliferatum AF-04. Fusaravenin (1) represents the first example of a natural naphthoisoxazole-type zwitter-ionic alkaloid, a naphthoisoxazole formic acid connected with a morpholino carbon skeleton. Cyclonerotriol B (7) is a new cyclonerane sesquiterpene. Another new sesquiterpene, 3β-hydroxy-β-acorenol (12), possesses an acorane framework. The known compounds 9 and 11 were found from both fungi. The structures of the new compounds were determined via extensive HR-ESI-MS and comparison between experimental and calculated NMR results. The biological properties of 1-5 and 7-17 were evaluated against eight anthropogenic bacteria, while 1 and 7-11 were also screened for inhibitory effects against four plant pathogen bacteria. The known compounds 8, 9, and 14-17 showed potent antibacterial activities toward some of the tested anthropogenic bacteria.
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Affiliation(s)
- Chun-Xiao Jiang
- School of Advanced Study , Taizhou University , Taizhou 318000 , People's Republic of China
| | | | | | - Xiao-Jie Jin
- College of Pharmacy , Gansu University of Chinese Medicine , Lanzhou 730000 , People's Republic of China
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17
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Tolosa J, Barba FJ, Font G, Ferrer E. Mycotoxin Incidence in Some Fish Products: QuEChERS Methodology and Liquid Chromatography Linear Ion Trap Tandem Mass Spectrometry Approach. Molecules 2019; 24:molecules24030527. [PMID: 30717117 PMCID: PMC6384792 DOI: 10.3390/molecules24030527] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 11/16/2022] Open
Abstract
The inclusion of vegetal raw materials in feed for fish farming has increased the risk of mycotoxin occurrence in feed, as well as in edible tissues from fish fed with contaminated feed, due to the carry-over to muscle portions. Therefore, the objective of this study was to evaluate the occurrence of 15 mycotoxins in processed fish products, which are commonly consumed, such as smoked salmon and trout, different types of sushi, and gula substitutes. A QuEChERS method was employed to perform the mycotoxin extraction from fish samples. For mycotoxin identification and quantitation, the selected technique was the liquid chromatography-tandem mass spectrometry linear ion trap (LC-MS/MS-LIT). Smoked fish and sushi samples results were negative regarding the presence of all 15 mycotoxins studied. In contrast, small amounts of fusarenon-X and enniatin B were found in gula substitute samples.
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Affiliation(s)
- Josefa Tolosa
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Avenue Vicent Andrés Estellés s/n, 46100 Burjassot, Spain.
| | - Francisco J Barba
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Avenue Vicent Andrés Estellés s/n, 46100 Burjassot, Spain.
| | - Guillermina Font
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Avenue Vicent Andrés Estellés s/n, 46100 Burjassot, Spain.
| | - Emilia Ferrer
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Avenue Vicent Andrés Estellés s/n, 46100 Burjassot, Spain.
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18
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Zhou YM, Ju GL, Xiao L, Zhang XF, Du FY. Cyclodepsipeptides and Sesquiterpenes from Marine-Derived Fungus Trichothecium roseum and Their Biological Functions. Mar Drugs 2018; 16:E519. [PMID: 30572686 PMCID: PMC6316070 DOI: 10.3390/md16120519] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 12/05/2018] [Accepted: 12/14/2018] [Indexed: 01/14/2023] Open
Abstract
On the basis of the 'one strain, many compounds' (OSMAC) strategy, chemical investigation of the marine-derived fungus Trichothecium roseum resulted in the isolation of trichomide cyclodepsipeptides (compounds 1⁻4) from PDB medium, and destruxin cyclodepsipeptides (compounds 5⁻7) and cyclonerodiol sesquiterpenes (compounds 8⁻10) from rice medium. The structures and absolute configurations of novel (compounds 1, 8, and 9) and known compounds were elucidated by extensive spectroscopic analyses, X-ray crystallographic analysis, and ECD calculations. All isolated compounds were evaluated for cytotoxic, nematicidal, and antifungal activities, as well as brine shrimp lethality. The novel compound 1 exhibited significant cytotoxic activities against the human cancer cell lines MCF-7, SW480, and HL-60, with IC50 values of 0.079, 0.107, and 0.149 μM, respectively. In addition, it also showed significant brine shrimp lethality, with an LD50 value of 0.48 μM, and moderate nematicidal activity against Heterodera avenae, with an LC50 value of 94.9 μg/mL. This study constitutes the first report on the cytotoxic and nematicidal potential of trichomide cyclodepsipeptides.
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Affiliation(s)
- Yuan-Ming Zhou
- College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China.
- Analytical and Testing Center, Qingdao Agricultural University, Qingdao 266109, China.
| | - Guang-Lin Ju
- College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China.
| | - Lin Xiao
- College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China.
| | - Xiang-Fei Zhang
- College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China.
| | - Feng-Yu Du
- College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China.
- Shandong Province Key Laboratory of Applied Mycology, Qingdao Agricultural University, Qingdao 266109, China.
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19
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Park YJ, Lee SR, Kim DM, Yu JS, Beemelmanns C, Chung KH, Kim KH. The Inhibitory Effects of Cyclodepsipeptides from the Entomopathogenic Fungus Beauveria bassiana on Myofibroblast Differentiation in A549 Alveolar Epithelial Cells. Molecules 2018; 23:molecules23102568. [PMID: 30297669 PMCID: PMC6222899 DOI: 10.3390/molecules23102568] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/01/2018] [Accepted: 10/06/2018] [Indexed: 02/04/2023] Open
Abstract
Pulmonary fibrosis (PF) is a chronic and fatal lung disease with few treatment options. Although the pathogenesis of PF is not clear, a chronic inflammatory response to continuous damage is considered the cause of pulmonary fibrosis. PF is characterized by excessive accumulation of extracellular matrix (ECM), therefore, inhibition of myofibroblast differentiation is a good therapeutic target for PF. As part of our continuing endeavor to explore biologically active metabolites from insect-associated microbes, we found that the MeOH extract of the culture broth from the entomopathogenic fungus Beauveria bassiana inhibited collagen induction and E-cadherin down-regulation. In order to identify active compounds, we carried out chemical analysis of the MeOH extract with the assistance of LC/MS-guided isolation approach, which led to the successful identification of four cyclodepsipeptides 1–4. Among the isolates, compound 2 showed inhibitory effects on myofibroblast differentiation induced by TGF-β1. Compound 2 inhibited induction of α-SMA and N-cadherin, which are myofibroblast markers, and blocked the accumulation of ECM proteins such as collagen and fibronectin. Overall these findings demonstrate that compound 2 can be used to attenuate pulmonary fibrosis by targeting myo- fibroblast differentiation.
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Affiliation(s)
- Yong Joo Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Seoung Rak Lee
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Dong Min Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Jae Sik Yu
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology-Hans-Knöll-Institute, Beutenbergstraße 11a, 07745 Jena, Germany.
| | - Kyu Hyuck Chung
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Korea.
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20
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Yang L, Li H, Wu P, Mahal A, Xue J, Xu L, Wei X. Dinghupeptins A-D, Chymotrypsin Inhibitory Cyclodepsipeptides Produced by a Soil-Derived Streptomyces. J Nat Prod 2018; 81:1928-1936. [PMID: 30222343 DOI: 10.1021/acs.jnatprod.7b01009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Four new cyclodepsipeptides, dinghupeptins A-D (1-4), possessing a rare N5-(2-hydroxylethyl)glutamine moiety, were isolated from cultures of the soil-derived Streptomyces sp. SC0581. Their structures were elucidated by spectroscopic and advanced Marfey's amino acid analysis, and their 3D structures were established by theoretical conformational analysis. Compounds 1 and 2, containing a 3-amino-6-hydroxypiperidone unit, displayed selective inhibition of chymotrypsin with IC50 values of 2.1 and 1.1 μM, respectively. Enzyme kinetic analysis and molecular docking experiments revealed they are competitive inhibitors binding to the active site of chymotrypsin.
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Affiliation(s)
- Li Yang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , Xingke Road 723 , Tianhe District, Guangzhou 510650 , People's Republic of China
- School of Life Sciences , University of Chinese Academy of Sciences , Yuquanlu 19A , Beijing 100049 , People's Republic of China
| | - Hanxiang Li
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , Xingke Road 723 , Tianhe District, Guangzhou 510650 , People's Republic of China
| | - Ping Wu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , Xingke Road 723 , Tianhe District, Guangzhou 510650 , People's Republic of China
| | - Ahmed Mahal
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , Xingke Road 723 , Tianhe District, Guangzhou 510650 , People's Republic of China
| | - Jinghua Xue
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , Xingke Road 723 , Tianhe District, Guangzhou 510650 , People's Republic of China
| | - Liangxiong Xu
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , Xingke Road 723 , Tianhe District, Guangzhou 510650 , People's Republic of China
| | - Xiaoyi Wei
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization/Guangdong Provincial Key Laboratory of Applied Botany , South China Botanical Garden, Chinese Academy of Sciences , Xingke Road 723 , Tianhe District, Guangzhou 510650 , People's Republic of China
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21
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Kanamori Y, Iwasaki A, Sumimoto S, Matsubara T, Sato T, Suenaga K. Izenamides A and B, Statine-Containing Depsipeptides, and an Analogue from a Marine Cyanobacterium. J Nat Prod 2018; 81:1673-1681. [PMID: 29944370 DOI: 10.1021/acs.jnatprod.8b00417] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Izenamides A, B, and C (1-3), new linear depsipeptides, were isolated from a taxonomically distinct marine cyanobacterium. Izenamides A and B contain a statine moiety [(3 S,4 S)-4-amino-3-hydroxy-6-methylheptanoic acid] and inhibited the activity of cathepsin D, an aspartic peptidase. Meanwhile, izenamides did not show growth-inhibitory activity against HeLa, HL60, or MCF-7 cells at up to 10 μM.
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Affiliation(s)
- Yuki Kanamori
- Department of Chemistry, Faculty of Science and Technology , Keio University , 3-14-1 Hiyoshi , Ko-hoku-ku, Yokohama , Kanagawa 223-8522 , Japan
| | - Arihiro Iwasaki
- Department of Chemistry, Faculty of Science and Technology , Keio University , 3-14-1 Hiyoshi , Ko-hoku-ku, Yokohama , Kanagawa 223-8522 , Japan
| | - Shimpei Sumimoto
- Department of Chemistry, Faculty of Science and Technology , Keio University , 3-14-1 Hiyoshi , Ko-hoku-ku, Yokohama , Kanagawa 223-8522 , Japan
| | - Teruhiko Matsubara
- Department of Biosciences and Informatics, Faculty of Science and Technology , Keio University , 3-14-1 Hiyoshi , Kohoku-ku, Yokohama , Kanagawa 223-8522 , Japan
| | - Toshinori Sato
- Department of Biosciences and Informatics, Faculty of Science and Technology , Keio University , 3-14-1 Hiyoshi , Kohoku-ku, Yokohama , Kanagawa 223-8522 , Japan
| | - Kiyotake Suenaga
- Department of Chemistry, Faculty of Science and Technology , Keio University , 3-14-1 Hiyoshi , Ko-hoku-ku, Yokohama , Kanagawa 223-8522 , Japan
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22
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Skiba MA, Sikkema AP, Moss NA, Lowell AN, Su M, Sturgis RM, Gerwick L, Gerwick WH, Sherman DH, Smith JL. Biosynthesis of t-Butyl in Apratoxin A: Functional Analysis and Architecture of a PKS Loading Module. ACS Chem Biol 2018; 13:1640-1650. [PMID: 29701944 PMCID: PMC6003868 DOI: 10.1021/acschembio.8b00252] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The unusual feature of a t-butyl group is found in several marine-derived natural products including apratoxin A, a Sec61 inhibitor produced by the cyanobacterium Moorea bouillonii PNG 5-198. Here, we determine that the apratoxin A t-butyl group is formed as a pivaloyl acyl carrier protein (ACP) by AprA, the polyketide synthase (PKS) loading module of the apratoxin A biosynthetic pathway. AprA contains an inactive "pseudo" GCN5-related N-acetyltransferase domain (ΨGNAT) flanked by two methyltransferase domains (MT1 and MT2) that differ distinctly in sequence. Structural, biochemical, and precursor incorporation studies reveal that MT2 catalyzes unusually coupled decarboxylation and methylation reactions to transform dimethylmalonyl-ACP, the product of MT1, to pivaloyl-ACP. Further, pivaloyl-ACP synthesis is primed by the fatty acid synthase malonyl acyltransferase (FabD), which compensates for the ΨGNAT and provides the initial acyl-transfer step to form AprA malonyl-ACP. Additionally, images of AprA from negative stain electron microscopy reveal multiple conformations that may facilitate the individual catalytic steps of the multienzyme module.
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Affiliation(s)
- Meredith A Skiba
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
- Department of Biological Chemistry , University of Michigan , Ann Arbor Michigan 48109 , United States
| | - Andrew P Sikkema
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
- Department of Biological Chemistry , University of Michigan , Ann Arbor Michigan 48109 , United States
| | - Nathan A Moss
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography , University of California, San Diego , La Jolla , California 92093 , United States
| | - Andrew N Lowell
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Min Su
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Rebecca M Sturgis
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Lena Gerwick
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography , University of California, San Diego , La Jolla , California 92093 , United States
| | - William H Gerwick
- Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography , University of California, San Diego , La Jolla , California 92093 , United States
- Skaggs School of Pharmacy and Pharmaceutical Sciences , University of California, San Diego , La Jolla , California 92093 , United States
| | - David H Sherman
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
- Department of Medicinal Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , United States
- Department of Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , United States
- Department of Microbiology and Immunology , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Janet L Smith
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
- Department of Biological Chemistry , University of Michigan , Ann Arbor Michigan 48109 , United States
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23
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Fotso S, Graupner P, Xiong Q, Gilbert JR, Hahn D, Avila-Adame C, Davis G, Sumiyoshi K. Alveolarides: Antifungal Peptides from Microascus alveolaris Active against Phytopathogenic Fungi. J Nat Prod 2018; 81:10-15. [PMID: 29283257 DOI: 10.1021/acs.jnatprod.7b00337] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Three novel cyclodepsipeptides, alveolarides A (1), B (2), and C (3), each possessing the rare 2,3-dihydroxy-4-methyltetradecanoic acid unit and a β-phenylalanine amino acid residue, along with the known peptide scopularide were isolated and identified from the culture broth of Microascus alveolaris strain PF1466. The pure compounds were evaluated for biological activity, and alveolaride A (1) provided strong in vitro activity against the plant pathogens Pyricularia oryzae, Zymoseptoria tritici, and Ustilago maydis. Moderate activity of alveolaride A was observed under in planta conditions against Z. tritici, Puccinia triticina, and Phakopsora pachyrhizi. Structures of 1, 2, and 3 were determined by detailed analysis of NMR (1D and 2D) and mass spectrometry data. The partial absolute configuration of alveolaride A (1) was established.
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Affiliation(s)
- Serge Fotso
- Discovery Research, Dow AgroSciences , 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Paul Graupner
- Discovery Research, Dow AgroSciences , 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Quanbo Xiong
- Discovery Research, Dow AgroSciences , 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Jeffrey R Gilbert
- Discovery Research, Dow AgroSciences , 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Don Hahn
- Discovery Research, Dow AgroSciences , 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Cruz Avila-Adame
- Discovery Research, Dow AgroSciences , 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - George Davis
- Discovery Research, Dow AgroSciences , 9330 Zionsville Road, Indianapolis, Indiana 46268, United States
| | - Kengo Sumiyoshi
- Bioscience Laboratories, Meiji Seika Pharma Co. Ltd. , 788 Kayama, Odawara-shi, Kanagawa 250-0852, Japan
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24
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Wang X, Gong X, Li P, Lai D, Zhou L. Structural Diversity and Biological Activities of Cyclic Depsipeptides from Fungi. Molecules 2018; 23:E169. [PMID: 29342967 PMCID: PMC6017592 DOI: 10.3390/molecules23010169] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/09/2018] [Accepted: 01/10/2018] [Indexed: 11/16/2022] Open
Abstract
Cyclic depsipeptides (CDPs) are cyclopeptides in which amide groups are replaced by corresponding lactone bonds due to the presence of a hydroxylated carboxylic acid in the peptide structure. These peptides sometimes display additional chemical modifications, including unusual amino acid residues in their structures. This review highlights the occurrence, structures and biological activities of the fungal CDPs reported until October 2017. About 352 fungal CDPs belonging to the groups of cyclic tri-, tetra-, penta-, hexa-, hepta-, octa-, nona-, deca-, and tridecadepsipeptides have been isolated from fungi. These metabolites are mainly reported from the genera Acremonium, Alternaria, Aspergillus, Beauveria, Fusarium, Isaria, Metarhizium, Penicillium, and Rosellina. They are known to exhibit various biological activities such as cytotoxic, phytotoxic, antimicrobial, antiviral, anthelmintic, insecticidal, antimalarial, antitumoral and enzyme-inhibitory activities. Some CDPs (i.e., PF1022A, enniatins and destruxins) have been applied as pharmaceuticals and agrochemicals.
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Affiliation(s)
- Xiaohan Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Xiao Gong
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Peng Li
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Daowan Lai
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
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25
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Ibrahim SRM, Abdallah HM, Elkhayat ES, Al Musayeib NM, Asfour HZ, Zayed MF, Mohamed GA. Fusaripeptide A: new antifungal and anti-malarial cyclodepsipeptide from the endophytic fungus Fusarium sp. J Asian Nat Prod Res 2018; 20:75-85. [PMID: 28446036 DOI: 10.1080/10286020.2017.1320989] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 04/16/2017] [Indexed: 06/07/2023]
Abstract
From the culture of the endophytic fungus Fusarium sp. isolated from the roots of Mentha longifolia L. (Labiatae) growing in Saudi Arabia, a new cyclodepsipeptide, namely fusaripeptide A (1), along with three known compounds adenosine (2), 2[(2-hydroxypropionyl)amino]benzamide (3), and cyclopentanol (4), have been isolated. Their structures were determined, using extensive 1D and 2D NMR and HRESI and GC mass spectral data. That is the first report for the isolation of compound 4 from natural source. In addition, compounds 2 and 3 are reported here for the first time from Fusarium sp. The absolute configuration of the amino acid residues of 1 was assigned by chiral GCMS and Marfey's analysis after acid hydrolysis. Fusaripeptide A differs from the reported ones from Fusarium sp. in the length of fatty acidic alkyl chain. Compound 1 was evaluated for its antifungal, anti-malarial, and cytotoxic activities. It exhibited potent antifungal activity toward C. albicans, C. glabrata, C. krusei, and A. fumigates with IC50 values of 0.11, 0.24, 0.19, and 0.14 μM, respectively. Furthermore, it had significant anti-malarial activity toward P. falciparum (D6 clone) with IC50 value of 0.34 μM. However, it showed cytotoxic activity toward the tested cell lines.
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Affiliation(s)
- Sabrin R M Ibrahim
- a Department of Pharmacognosy and Pharmaceutical Chemistry , College of Pharmacy, Taibah University , Al Madinah Al Munawwarah 30078 , Saudi Arabia
- b Department of Pharmacognosy, Faculty of Pharmacy , Assiut University , Assiut 71526 , Egypt
| | - Hossam M Abdallah
- c Department of Natural Products and Alternative Medicine, Faculty of Pharmacy , King Abdulaziz University , Jeddah 21589 , Saudi Arabia
- d Department of Pharmacognosy, Faculty of Pharmacy , Cairo University , Cairo 11562 , Egypt
| | - Ehab S Elkhayat
- e Department of Pharmacognosy, Faculty of Pharmacy , Al-Azhar University, Assiut Branch , Assiut 71524 , Egypt
| | - Nawal M Al Musayeib
- f Department of Pharmacognosy , College of Pharmacy, King Saud University , Riyadh 11451 , Saudi Arabia
| | - Hani Z Asfour
- g Department of Medical Microbiology and Parasitology, Faculty of Medicine , Princess Al-Jawhara Center of Excellence in Research of Hereditary Disorders, King Abdulaziz University , Jeddah 21589 , Saudi Arabia
| | - Mohamed F Zayed
- a Department of Pharmacognosy and Pharmaceutical Chemistry , College of Pharmacy, Taibah University , Al Madinah Al Munawwarah 30078 , Saudi Arabia
- h Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Al-Azhar University , Cairo 11371 , Egypt
| | - Gamal A Mohamed
- c Department of Natural Products and Alternative Medicine, Faculty of Pharmacy , King Abdulaziz University , Jeddah 21589 , Saudi Arabia
- e Department of Pharmacognosy, Faculty of Pharmacy , Al-Azhar University, Assiut Branch , Assiut 71524 , Egypt
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26
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Urda C, Fernández R, Rodríguez J, Pérez M, Jiménez C, Cuevas C. Daedophamide, a Cytotoxic Cyclodepsipeptide from a Daedalopelta sp. Sponge Collected in Indonesia. J Nat Prod 2017; 80:3054-3059. [PMID: 29112820 DOI: 10.1021/acs.jnatprod.7b00678] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A new cyclodepsipeptide, daedophamide (1), has been isolated from a Daedalopelta sp. marine sponge collected from Alor Island (Indonesia). The planar structure of 1 was assigned on the basis of extensive 1D and 2D NMR spectroscopy and mass spectrometry. Daedophamide (1) contains 11 amino acid residues and an amide-linked 3-hydroxy-2,4,6,8-tetramethylnonanoic acid (Htemna). The amino acid constituents were identified as l-Leu, N-Me-l-Gln, d-Arg, d-Asp, d-allo-Thr, l-Pip, d-Ala, d-Ser, 3,4-dimethyl-Gln, O-MeThr, and 4-amino-7-guanidino-2,3-dihydroxyheptanoic acid (Agdha). The absolute configurations of eight of the amino acid residues in 1 were determined by application of the Marfey's method after acid-catalyzed hydrolysis, with the relative configurations of the remaining three amino acid residues and the Htemna unit being assigned by comparison of the NMR data with those reported for other similar peptides. Compound 1 displayed strong cytotoxic activity against a panel of four human tumor cell lines with GI50 values in the submicromolar range.
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Affiliation(s)
- Carlos Urda
- Medicinal Chemistry Department, PharmaMar S. A. , Pol. Ind. La Mina Norte, Avenida de los Reyes 1, 28770, Colmenar Viejo (Madrid), Spain
| | - Rogelio Fernández
- Medicinal Chemistry Department, PharmaMar S. A. , Pol. Ind. La Mina Norte, Avenida de los Reyes 1, 28770, Colmenar Viejo (Madrid), Spain
| | - Jaime Rodríguez
- Departamento de Química, Facultade de Ciencias e Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña , 15071 A Coruña, Spain
| | - Marta Pérez
- Medicinal Chemistry Department, PharmaMar S. A. , Pol. Ind. La Mina Norte, Avenida de los Reyes 1, 28770, Colmenar Viejo (Madrid), Spain
| | - Carlos Jiménez
- Departamento de Química, Facultade de Ciencias e Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña , 15071 A Coruña, Spain
| | - Carmen Cuevas
- Medicinal Chemistry Department, PharmaMar S. A. , Pol. Ind. La Mina Norte, Avenida de los Reyes 1, 28770, Colmenar Viejo (Madrid), Spain
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27
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Petitbois JG, Casalme LO, Lopez JAV, Alarif WM, Abdel-Lateff A, Al-Lihaibi SS, Yoshimura E, Nogata Y, Umezawa T, Matsuda F, Okino T. Serinolamides and Lyngbyabellins from an Okeania sp. Cyanobacterium Collected from the Red Sea. J Nat Prod 2017; 80:2708-2715. [PMID: 29019684 DOI: 10.1021/acs.jnatprod.7b00449] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
NMR- and MS-guided fractionation of an extract of an Okeania sp. marine cyanobacterium, collected from the Red Sea, led to the isolation of four new metabolites, including serinolamides C (1) and D (2) and lyngbyabellins O (3) and P (4), together with the three known substances lyngbyabellins F (5) and G (6) and dolastatin 16 (7). The planar structures of the new compounds were determined using NMR and MS analyses. The absolute configurations of 1 and 2 were determined by Marfey's analysis of their hydrolysates. The absolute configuration of 3 was ascertained by chiral-phase chromatography of degradation products, while that of 4 was determined by comparison to 3 and 5. The cytotoxic and antifouling activities of these compounds were evaluated using MCF7 breast cancer cells and Amphibalanus amphitrite larvae, respectively. Compounds 3, 4, and 7 exhibited strong antifouling activity, and 3 and 7 were not cytotoxic. A structure-activity relationship was observed for the cytotoxicity of the lyngbyabellins with the presence of a side chain (4 is more active than 3) leading to greater activity. For the antifouling activity, the acyclic form without a side chain (3) was the most active.
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Affiliation(s)
| | | | | | - Walied M Alarif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University , P.O. Box 80207, Jeddah 21589, Saudi Arabia
| | - Ahmed Abdel-Lateff
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University , P.O. Box 80260, Jeddah 21589, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University , Minia 61519, Egypt
| | - Sultan S Al-Lihaibi
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University , P.O. Box 80207, Jeddah 21589, Saudi Arabia
| | | | - Yasuyuki Nogata
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry , Abiko 270-1194, Japan
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28
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Iwasaki A, Shiota I, Sumimoto S, Matsubara T, Sato T, Suenaga K. Kohamamides A, B, and C, Cyclic Depsipeptides from an Okeania sp. Marine Cyanobacterium. J Nat Prod 2017; 80:1948-1952. [PMID: 28541699 DOI: 10.1021/acs.jnatprod.7b00256] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Kohamamides A, B, and C (1-3), new cyclic depsipeptides that belong to the kulolide superfamily, were isolated from an Okeania sp. marine cyanobacterium. Their structures were elucidated by spectroscopic analyses and degradation reactions. Kohamamide B (2) exhibited moderate cytotoxicity against HL60 cells. Although many natural products in the kulolide superfamily have been isolated from cyanobacteria collected in various parts of the world, kohamamides 1-3 are the first members to be isolated from the East Asian marine environment. In addition, unlike other members of this superfamily, kohamamides 1-3 contain a Leu residue adjacent to the Pro residue, rather than another lipophilic amino acid.
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Affiliation(s)
- Arihiro Iwasaki
- Department of Chemistry and ‡Department of Biosciences and Informatics, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Ikuma Shiota
- Department of Chemistry and ‡Department of Biosciences and Informatics, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Shimpei Sumimoto
- Department of Chemistry and ‡Department of Biosciences and Informatics, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Teruhiko Matsubara
- Department of Chemistry and ‡Department of Biosciences and Informatics, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Toshinori Sato
- Department of Chemistry and ‡Department of Biosciences and Informatics, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Kiyotake Suenaga
- Department of Chemistry and ‡Department of Biosciences and Informatics, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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29
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Almaliti J, Malloy KL, Glukhov E, Spadafora C, Gutiérrez M, Gerwick WH. Dudawalamides A-D, Antiparasitic Cyclic Depsipeptides from the Marine Cyanobacterium Moorea producens. J Nat Prod 2017; 80:1827-1836. [PMID: 28535042 DOI: 10.1021/acs.jnatprod.7b00034] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A family of 2,2-dimethyl-3-hydroxy-7-octynoic acid (Dhoya)-containing cyclic depsipeptides, named dudawalamides A-D (1-4), was isolated from a Papua New Guinean field collection of the cyanobacterium Moorea producens using bioassay-guided and spectroscopic approaches. The planar structures of dudawalamides A-D were determined by a combination of 1D and 2D NMR experiments and MS analysis, whereas the absolute configurations were determined by X-ray crystallography, modified Marfey's analysis, chiral-phase GCMS, and chiral-phase HPLC. Dudawalamides A-D possess a broad spectrum of antiparasitic activity with minimal mammalian cell cytotoxicity. Comparative analysis of the Dhoya-containing class of lipopeptides reveals intriguing structure-activity relationship features of these NRPS-PKS-derived metabolites and their derivatives.
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Affiliation(s)
- Jehad Almaliti
- Department Pharmaceutical Sciences, College of Pharmacy, The University of Jordan , Amman, 11942, Jordan
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30
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Svingen T, Lund Hansen N, Taxvig C, Vinggaard AM, Jensen U, Have Rasmussen P. Enniatin B and beauvericin are common in Danish cereals and show high hepatotoxicity on a high-content imaging platform. Environ Toxicol 2017; 32:1658-1664. [PMID: 27628925 DOI: 10.1002/tox.22367] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 08/10/2016] [Accepted: 08/27/2016] [Indexed: 06/06/2023]
Abstract
Mycotoxins are fungi-born metabolites that can contaminate foods through mould-infected crops. They are a significant food/feed-safety issue across the globe and represent a substantial financial burden for the world economy. Moreover, with a changing climate and fungal biota, there is now much discussion about emerging mycotoxins that are measurable at significant levels in crops world-wide. Unfortunately, we still know very little about the bioavailability and toxic potentials of many of these less characterized mycotoxins, including the large family of enniatins. In this study, we present new occurrence data for enniatin A, A1, B, B1 and beauvericin in four Danish crops: oat, wheat, and barley from the 2010 harvest, and rye from 2011 harvest. The occurrence of the four enniatins were B > B1 > A1 > A. Enniatin B was detected in 100% of tested samples regardless of crop type. In addition to occurrence data, we report a proof-of-concept study using a human-relevant high-content hepatotoxicity, or "quadroprobe," assay to screen mycotoxins for their cytotoxic potential. The assay was sensitive for most cytotoxic compounds in the 0.009-100 µM range. Among eight tested mycotoxins (enniatin B, beauvericin, altenariol, deoxynivalenol, aflatoxin B1, andrastin A, citrinin, and penicillic acid), enniatin B and beauvericin showed significant cytotoxicity at a concentration lower than that for aflatoxin B1, which is the archetypal acute hepatotoxic and liver-carcinogenic mycotoxin. Hence, the quadroprobe hepatotoxicity assay may become a valuable assessment tool for toxicity assessment of mycotoxins in the future. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1658-1664, 2017.
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Affiliation(s)
- Terje Svingen
- Divisions of Diet, Disease Preventative and Toxicology, National Food Institute Technical University of Denmark, Søborg, DK, 2860, Denmark
| | - Niels Lund Hansen
- Divisions of Diet, Disease Preventative and Toxicology, National Food Institute Technical University of Denmark, Søborg, DK, 2860, Denmark
| | - Camilla Taxvig
- Divisions of Diet, Disease Preventative and Toxicology, National Food Institute Technical University of Denmark, Søborg, DK, 2860, Denmark
| | - Anne Marie Vinggaard
- Divisions of Diet, Disease Preventative and Toxicology, National Food Institute Technical University of Denmark, Søborg, DK, 2860, Denmark
| | - Udo Jensen
- Department of Food Chemistry, Danish Veterinary and Food Administration, Søndervang 4, Ringsted, DK, 4100, Denmark
| | - Peter Have Rasmussen
- Research Group for Chemical Food Analysis, National Food Institute, Technical University of Denmark, Søborg, DK, 2860, Denmark
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31
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Quezada M, Shang Z, Kalansuriya P, Salim AA, Lacey E, Capon RJ. Waspergillamide A, a Nitro depsi-Tetrapeptide Diketopiperazine from an Australian Mud Dauber Wasp-Associated Aspergillus sp. (CMB-W031). J Nat Prod 2017; 80:1192-1195. [PMID: 28234476 DOI: 10.1021/acs.jnatprod.6b01062] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Chemical profiling of extracts from a mud dauber wasp-associated fungus, Aspergillus sp. (CMB-W031), revealed a remarkably diverse array of secondary metabolites, with many biosynthetic gene clusters being transcriptionally responsive to specific culture conditions. Chemical fractionation of a jasmine rice cultivation yielded many known fungal metabolites, including the highly cytotoxic (-)-stephacidin B and an unprecedented nonribosomal peptide synthase derived nitro depsi-tetrapeptide diketopiperazine, waspergillamide A (1). All structures were assigned by detailed spectroscopic analysis and, where appropriate, chemical degradation and Marfey's analysis.
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Affiliation(s)
- Michelle Quezada
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland , St Lucia, Queensland 4072, Australia
| | - Zhuo Shang
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland , St Lucia, Queensland 4072, Australia
| | - Pabasara Kalansuriya
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland , St Lucia, Queensland 4072, Australia
| | - Angela A Salim
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland , St Lucia, Queensland 4072, Australia
| | - Ernest Lacey
- Microbial Screening Technologies , Smithfield, NSW 2164, Australia
| | - Robert J Capon
- Division of Chemistry and Structural Biology, Institute for Molecular Bioscience, The University of Queensland , St Lucia, Queensland 4072, Australia
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32
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Ye X, Anjum K, Song T, Wang W, Liang Y, Chen M, Huang H, Lian XY, Zhang Z. Antiproliferative cyclodepsipeptides from the marine actinomycete Streptomyces sp. P11-23B downregulating the tumor metabolic enzymes of glycolysis, glutaminolysis, and lipogenesis. Phytochemistry 2017; 135:151-159. [PMID: 28049552 PMCID: PMC7111624 DOI: 10.1016/j.phytochem.2016.12.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 12/07/2016] [Accepted: 12/13/2016] [Indexed: 05/16/2023]
Abstract
Two cyclodepsipeptides and a known cyclodepsipeptide valinomycin were isolated from a culture of the marine actinomycete Streptomyces sp. P11-23B. Their structures were established based on NMR, HRESIMS, and MS-MS spectroscopic interpretation as well as by chemical degradation. Both streptodepsipeptides P11A and P11B inhibited proliferation of different glioma cell lines, with IC50 values ranging from 0.1 μM to 1.4 μM. Streptodepsipeptide P11A was found to block the cell cycle at the G0/G1 phase and induce apoptosis in glioma cells. Further investigation demonstrated that streptodepsipeptide P11A downregulated expression of HK2, PFKFB3, PKM2, GLS, and FASN, important tumor metabolic enzymes. Data from this study suggested that targeting multiple tumor metabolic regulators might be one anti-glioma mechanism of streptodepsipeptide P11A. A possible mechanism for this class of streptodepsipeptides is reported herein.
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Affiliation(s)
- Xuewei Ye
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Komal Anjum
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Tengfei Song
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Wenling Wang
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Ying Liang
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Mengxuan Chen
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Haocai Huang
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China
| | - Xiao-Yuan Lian
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Zhizhen Zhang
- Ocean College, Zhoushan Campus, Zhejiang University, Zhoushan 316021, China.
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33
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Zhang S, Qiu Y, Kakule TB, Lu Z, Xu F, Lamb JG, Reilly CA, Zheng Y, Sham SWS, Wang W, Xuan L, Schmidt EW, Zhan J. Identification of Cyclic Depsipeptides and Their Dedicated Synthetase from Hapsidospora irregularis. J Nat Prod 2017; 80:363-370. [PMID: 28106998 PMCID: PMC5975237 DOI: 10.1021/acs.jnatprod.6b00808] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Seven cyclic depsipeptides were isolated from Hapsidospora irregularis and structurally characterized as the calcium channel blocker leualacin and six new analogues based on the NMR and HRESIMS data. These new compounds were named leualacins B-G. The absolute configurations of the amino acids and 2-hydroxyisocaproic acids were determined by recording the optical rotation values. Biological studies showed that calcium influx elicited by leualacin F in primary human lobar bronchial epithelial cells involves the TRPA1 channel. Through genome sequencing and targeted gene disruption, a noniterative nonribosomal peptide synthetase was found to be involved in the biosynthesis of leualacin. A comparison of the structures of leualacin and its analogues indicated that the A2 and A4 domains of the leualacin synthetase are substrate specific, while A1, A3, and A5 can accept alternative precursors to yield new molecules.
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Affiliation(s)
- Shuwei Zhang
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322, USA
| | - Yixing Qiu
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322, USA
- TCM and Ethnomedicine Innovation & Development Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China
| | - Thomas B. Kakule
- Department of Medicinal Chemistry, L. S. Skaggs Pharmacy Institute, University of Utah, Salt Lake City, UT 84112, USA
| | - Zhenyu Lu
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 84112, USA
| | - Fuchao Xu
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322, USA
| | - John G. Lamb
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 84112, USA
| | - Christopher A. Reilly
- Department of Pharmacology and Toxicology, University of Utah, Salt Lake City, UT 84112, USA
| | - Yong Zheng
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 202203, China
| | - Shing Wo Simon Sham
- Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT 84322, USA
| | - Wei Wang
- TCM and Ethnomedicine Innovation & Development Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China
| | - Lijiang Xuan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai 202203, China
| | - Eric W. Schmidt
- Department of Medicinal Chemistry, L. S. Skaggs Pharmacy Institute, University of Utah, Salt Lake City, UT 84112, USA
| | - Jixun Zhan
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322, USA
- TCM and Ethnomedicine Innovation & Development Laboratory, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, Hunan 410208, China
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Jang JP, Nogawa T, Futamura Y, Shimizu T, Hashizume D, Takahashi S, Jang JH, Ahn JS, Osada H. Octaminomycins A and B, Cyclic Octadepsipeptides Active against Plasmodium falciparum. J Nat Prod 2017; 80:134-140. [PMID: 28055207 DOI: 10.1021/acs.jnatprod.6b00758] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two new cyclic octadepsipeptides, octaminomycins A (1) and B (2), were isolated from a microbial metabolite fraction library of Streptomyces sp. RK85-270 based on Natural Products Plot screening. Their structures were elucidated on the basis of HRESIMS, 1D and 2D NMR spectroscopic data, and MS/MS experiments for sequence analysis. The absolute configurations of the constituent amino acid residues were determined by a combination of single-crystal X-ray diffraction and Marfey's methodology. Notably, octaminomycins A (1) and B (2) showed good in vitro antiplasmodial activity against chloroquine-sensitive as well as chloroquine-resistant strains with no cytotoxicity up to 30 μM.
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Affiliation(s)
- Jun-Pil Jang
- RIKEN Global Research Cluster , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology , Cheongju, 28116, South Korea
| | - Toshihiko Nogawa
- Chemical Biology Research Group, RIKEN Center for Sustainable Research Science , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yushi Futamura
- Chemical Biology Research Group, RIKEN Center for Sustainable Research Science , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Takeshi Shimizu
- Chemical Biology Research Group, RIKEN Center for Sustainable Research Science , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Daisuke Hashizume
- Materials Characterization Support Unit, RIKEN Center for Emergent Matter Science (CEMS) , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Shunji Takahashi
- RIKEN Global Research Cluster , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Chemical Biology Research Group, RIKEN Center for Sustainable Research Science , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Jae-Hyuk Jang
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology , Cheongju, 28116, South Korea
| | - Jong Seog Ahn
- Anticancer Agent Research Center, Korea Research Institute of Bioscience and Biotechnology , Cheongju, 28116, South Korea
| | - Hiroyuki Osada
- Chemical Biology Research Group, RIKEN Center for Sustainable Research Science , 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Xu X, Zhao S, Yu Y, Chen Z, Shen H, Zhou L. Beauvericin K, a New Antifungal Beauvericin Analogue from a Marine-derived Fusarium sp. Nat Prod Commun 2016; 11:1825-1826. [PMID: 30508343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023] Open
Abstract
Chemical investigation of a Chinese collection of a marine-derived fungus, Fusarium sp., led to the characterization of beauvericin.K, a new analogue of beauvericin. The structure of the new compound was elucidated by detailed spectroscopic analysis, including ID and 2D NMR methods, and HRMS. Beauvericin K showed significant activity against the yeast Candida albicans with an IC50 value of 6.25 üg/mL..
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Kim YJ, Kim HJ, Kim GW, Cho K, Takahashi S, Koshino H, Kim WG. Isolation of Coralmycins A and B, Potent Anti-Gram Negative Compounds from the Myxobacteria Corallococcus coralloides M23. J Nat Prod 2016; 79:2223-2228. [PMID: 27598688 DOI: 10.1021/acs.jnatprod.6b00294] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two new potent anti-Gram negative compounds, coralmycins A (1) and B (2), were isolated from cultures of the myxobacteria Corallococcus coralloides M23, together with another derivative (3) that was identified as the very recently reported cystobactamid 919-2. Their structures including the relative stereochemistry were elucidated by interpretation of spectroscopic, optical rotation, and CD data. The relative stereochemistry of 3 was revised to "S*R*" by NMR analysis. The antibacterial activity of 1 was most potent against Gram-negative pathogens, including Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumanii, and Klebsiella pneumoniae, with MICs of 0.1-4 μg/mL; these MICs were 4-10 and 40-100 times stronger than the antibacterial activities of 3 and 2, respectively. Thus, these data indicated that the β-methoxyasparagine unit and the hydroxy group of the benzoic acid unit were critical for antibacterial activity.
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Affiliation(s)
- Yu Jin Kim
- Superbacteria Research Center, Korea Research Institute of Bioscience and Biotechnology , Yusong, Daejeon 305-806, Korea
| | - Hyun-Ju Kim
- Superbacteria Research Center, Korea Research Institute of Bioscience and Biotechnology , Yusong, Daejeon 305-806, Korea
| | - Geon-Woo Kim
- Superbacteria Research Center, Korea Research Institute of Bioscience and Biotechnology , Yusong, Daejeon 305-806, Korea
| | - Kyungyun Cho
- Department of Biotechnology, Hoseo University , Asan 336-795, Korea
| | - Shunya Takahashi
- RIKEN Center for Sustainable Resource Science , Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Hiroyuki Koshino
- RIKEN Center for Sustainable Resource Science , Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Won-Gon Kim
- Superbacteria Research Center, Korea Research Institute of Bioscience and Biotechnology , Yusong, Daejeon 305-806, Korea
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Ding LJ, Yuan W, Liao XJ, Han BN, Wang SP, Li ZY, Xu SH, Zhang W, Lin HW. Oryzamides A-E, Cyclodepsipeptides from the Sponge-Derived Fungus Nigrospora oryzae PF18. J Nat Prod 2016; 79:2045-2052. [PMID: 27489998 DOI: 10.1021/acs.jnatprod.6b00349] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Three new cyclohexadepsipeptides, oryzamides A-C (1-3), two isolation artifacts, oryzamides D (4) and E (5), and the known congener scopularide A (6), all possessing a rare 3-hydroxy-4-methyldecanoic acid (HMDA) substructure, were isolated from the mycelial extract of the sponge-derived fungus Nigrospora oryzae PF18. Their planar structures were elucidated by spectroscopic analysis and comparison with the literature data. The absolute configurations were determined using the advanced Marfey's method and single-crystal X-ray diffraction analysis. Among them, oryzamides D (4) and E (5) were a pair of diastereomers at the sulfur atom of the l-methionine sulfoxide residue, which showcased the possible separation of a pair of methionine sulfoxide diastereomers. The X-ray crystal structure of scopularide A (6) was obtained for the first time, thereby establishing its relative and absolute configuration at C-4 of the HMDA residue. Oryzamides A-C (1-3) did not display cytotoxic, antibacterial, antiparasitic, and NF-κB inhibitory activities.
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Affiliation(s)
- Li-Jian Ding
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
- College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Wei Yuan
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
| | - Xiao-Jian Liao
- College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Bing-Nan Han
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
| | - Shu-Ping Wang
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
| | - Zhi-Yong Li
- Key Laboratory of Microbial Metabolism, Marine Biotechnology Laboratory, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University , Shanghai 200240, People's Republic of China
| | - Shi-Hai Xu
- College of Pharmacy, Jinan University , Guangzhou 510632, People's Republic of China
| | - Wei Zhang
- Center for Marine Bioproducts Development, Flingers University , Adelaide 5001, Australia
| | - Hou-Wen Lin
- Research Center for Marine Drugs, State Key Laboratory of Oncogenes and Related Genes, Department of Pharmacy, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai 200127, People's Republic of China
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38
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Kramer A, Labes A, Imhoff JF. Phylogenetic Relationship and Secondary Metabolite Production of Marine Fungi Producing the Cyclodepsipeptides Scopularide A and B. Mar Biotechnol (NY) 2016; 18:466-474. [PMID: 27209381 DOI: 10.1007/s10126-016-9707-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 05/09/2016] [Indexed: 06/05/2023]
Abstract
Strains originally affiliated to the genera Scopulariopsis and Microascus were compared regarding the scopularide production in order to investigate their ability to produce the cyclodepsipeptides and select the best suited candidate for subsequent optimisation processes. Phylogenetic calculations using available sequences of the genera Scopulariopsis and Microascus revealed that most of the sequences clustered within two closely related groups, comprising mainly Scopulariopsis/Microascus brevicaulis and Microascus sp., respectively. Interestingly, high yields of scopularide A were exhibited by three strains belonging to S./M. brevicaulis, while lower titres were observed for two strains of Microascus sp. Close phylogenetic distances within and between the two groups supported the proposed combination of both genera into one holomorph group. Short phylogenetic distances did not allow a clear affiliation at the species level on the basis of ribosomal DNA sequences, especially for Microascus sp. strains. Additionally, several sequences originating from strains assigned to Scopulariopsis exhibited a polyphyletic nature. The production pattern is in accordance with the phylogenetic position of the strains and significant production of scopularide B could only be observed for the S./M. brevicaulis strain LF580. Thus, the phylogenetic position marks the biotechnologically interesting strains and matters in optimisation strategies. In conclusion, the ability of all five strains to produce at least one of the scopularides suggests a distribution of the responsible gene cluster within the holomorph group. Setting the focus on the production of the cyclodepsipeptides, strain LF580 represents the best candidate for further strain and process optimisation.
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Affiliation(s)
- Annemarie Kramer
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, 24105, Kiel, Germany
| | - Antje Labes
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, 24105, Kiel, Germany
| | - Johannes F Imhoff
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, 24105, Kiel, Germany.
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Lopez JAV, Al-Lihaibi SS, Alarif WM, Abdel-Lateff A, Nogata Y, Washio K, Morikawa M, Okino T. Wewakazole B, a Cytotoxic Cyanobactin from the Cyanobacterium Moorea producens Collected in the Red Sea. J Nat Prod 2016; 79:1213-8. [PMID: 26980238 DOI: 10.1021/acs.jnatprod.6b00051] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
A mass spectrometry (MS)-guided isolation has led to the purification of a new cyanobactin, wewakazole B (1), along with the known compound curacin D from a Red Sea Moorea producens. The planar structure of 1 was elucidated using a combination of NMR and MS techniques. After ozonolysis and acid hydrolysis, the absolute configurations of the amino acid components of 1 were determined by chiral-phase LC-MS and HPLC analyses. Notably, compound 1 exhibited cytotoxic activity toward human MCF7 breast cancer cells (IC50 = 0.58 μM) and human H460 lung cancer cells (IC50 = 1.0 μM) and was also found to be inactive in a siderophore assay.
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Affiliation(s)
| | - Sultan S Al-Lihaibi
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University , P.O. Box 80207, Jeddah 21589, Saudi Arabia
| | - Walied M Alarif
- Department of Marine Chemistry, Faculty of Marine Sciences, King Abdulaziz University , P.O. Box 80207, Jeddah 21589, Saudi Arabia
| | - Ahmed Abdel-Lateff
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University , P.O. Box 80260, Jeddah 21589, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University , Minia 61519, Egypt
| | - Yasuyuki Nogata
- Environmental Science Research Laboratory, Central Research Institute of Electric Power Industry , Abiko 270-1194, Japan
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40
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Hahn D, Kim H, Yang I, Chin J, Hwang H, Won DH, Lee B, Nam SJ, Ekins M, Choi H, Kang H. The Halicylindramides, Farnesoid X Receptor Antagonizing Depsipeptides from a Petrosia sp. Marine Sponge Collected in Korea. J Nat Prod 2016; 79:499-506. [PMID: 26821210 DOI: 10.1021/acs.jnatprod.5b00871] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Three new structurally related depsipeptides, halicylindramides F-H (1-3), and two known halicylindramides were isolated from a Petrosia sp. marine sponge collected off the shore of Youngdeok-Gun, East Sea, Republic of Korea. Their planar structures were elucidated by extensive spectroscopic data analyses including 1D and 2D NMR data as well as MS data. The absolute configurations of halicylindramides F-H (1-3) were determined by Marfey's method in combination with Edman degradation. The absolute configurations at C-4 of the dioxyindolyl alanine (Dioia) residues of halicylindramides G (2) and H (3) were determined as 4S and 4R, respectively, based on ECD spectroscopy. The C-2 configurations of Dioia in 2 and 3 were speculated to both be 2R based on the shared biogenesis of the halicylindramides. Halicylindramides F (1), A (4), and C (5) showed human farnesoid X receptor (hFXR) antagonistic activities, but did not bind directly to hFXR.
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Affiliation(s)
- Dongyup Hahn
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation , Daegu, 41061, Republic of Korea
| | - Hiyoung Kim
- School of Earth and Environmental Sciences, Seoul National University , NS-80, Seoul, 08826, Republic of Korea
| | - Inho Yang
- School of Earth and Environmental Sciences, Seoul National University , NS-80, Seoul, 08826, Republic of Korea
| | - Jungwook Chin
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation , Daegu, 41061, Republic of Korea
| | - Hoosang Hwang
- School of Earth and Environmental Sciences, Seoul National University , NS-80, Seoul, 08826, Republic of Korea
| | - Dong Hwan Won
- School of Earth and Environmental Sciences, Seoul National University , NS-80, Seoul, 08826, Republic of Korea
| | - Byoungchan Lee
- School of Earth and Environmental Sciences, Seoul National University , NS-80, Seoul, 08826, Republic of Korea
| | - Sang-Jip Nam
- Department of Chemistry and Nano Science, Global Top 5 Program, Ewha Womans University , Seoul, 03760, Republic of Korea
| | - Merrick Ekins
- Queensland Museum , P.O. Box 3300, South Brisbane, Queensland 4101, Australia
| | - Hyukjae Choi
- College of Pharmacy, Yeungnam University , Gyeongsan, 38541, Republic of Korea
| | - Heonjoong Kang
- School of Earth and Environmental Sciences, Seoul National University , NS-80, Seoul, 08826, Republic of Korea
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41
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Igarashi Y, Yamamoto K, Fukuda T, Shojima A, Nakayama J, Carro L, Trujillo ME. Arthroamide, a Cyclic Depsipeptide with Quorum Sensing Inhibitory Activity from Arthrobacter sp. J Nat Prod 2015; 78:2827-2831. [PMID: 26575343 DOI: 10.1021/acs.jnatprod.5b00540] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nonfilamentous actinobacteria have been less studied as secondary metabolite producers than their filamentous counterparts such as Streptomyces. From our collection of nonfilamentous actinobacteria isolated from sandstone, an Arthrobacter strain was found to produce a new cyclic peptide arthroamide (1) together with the known compound turnagainolide A (2). These compounds inhibited the quorum sensing signaling of Staphylococcus aureus in the submicromolar to micromolar range.
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Affiliation(s)
- Yasuhiro Igarashi
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University , 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Kazuki Yamamoto
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University , 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Takao Fukuda
- Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University , 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Akane Shojima
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University , 6-10-14 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Jiro Nakayama
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University , 6-10-14 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Lorena Carro
- Departmento de Microbiologia y Genetica, Edificio Departamental Lab. 214, Universidad de Salamanca , Campus Miguel de Unamuno, 37007 Salamanca, Spain
| | - Martha E Trujillo
- Departmento de Microbiologia y Genetica, Edificio Departamental Lab. 214, Universidad de Salamanca , Campus Miguel de Unamuno, 37007 Salamanca, Spain
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Kikuchi H, Hoshikawa T, Fujimura S, Sakata N, Kurata S, Katou Y, Oshima Y. Isolation of a Cyclic Depsipetide, Aspergillicin F, and Synthesis of Aspergillicins with Innate Immune-Modulating Activity. J Nat Prod 2015; 78:1949-1956. [PMID: 26273902 DOI: 10.1021/acs.jnatprod.5b00286] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Innate immunity is the front line of self-defense against microbial infection. After searching for natural compounds that regulate innate immunity using an ex vivo Drosophila culture system, we identified a new cyclic depsipeptide, aspergillicin F, from the fungus Aspergillus sp., as an innate immune suppressor. The total synthesis and biological evaluation of the aspergillicin family, including aspergillicin F, were performed, revealing that slight structural differences in the side chains of amino acid residues alter innate immunity-regulating activity.
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Affiliation(s)
- Haruhisa Kikuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba-yama, Aoba-ku, Sendai 980-8578, Japan
| | - Tsuyoshi Hoshikawa
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba-yama, Aoba-ku, Sendai 980-8578, Japan
| | - Shimpei Fujimura
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba-yama, Aoba-ku, Sendai 980-8578, Japan
| | - Noriaki Sakata
- Bioresource Laboratories, MicroBiopharm Japan Co., Ltd. (MBJ), 1808 Nakaizumi, Iwata, Shizuoka 438-0078, Japan
| | - Shoichiro Kurata
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba-yama, Aoba-ku, Sendai 980-8578, Japan
| | - Yasuhiro Katou
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba-yama, Aoba-ku, Sendai 980-8578, Japan
| | - Yoshiteru Oshima
- Graduate School of Pharmaceutical Sciences, Tohoku University , Aoba-yama, Aoba-ku, Sendai 980-8578, Japan
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Taibon J, Sturm S, Seger C, Strasser H, Stuppner H. Quantitative Assessment of Destruxins from Strawberry and Maize in the Lower Parts per Billion Range: Combination of a QuEChERS-Based Extraction Protocol with a Fast and Selective UHPLC-QTOF-MS Assay. J Agric Food Chem 2015; 63:5707-5713. [PMID: 26005897 DOI: 10.1021/acs.jafc.5b01562] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The entomopathogenic fungus Metarhizium brunneum is widely applied as a biological pest control agent. Consequently, its use has to be accompanied by a risk management approach, which includes the need to monitor the fate of its bioactive metabolites in the environment, for example, in treated crops. A fast and selective UHPLC-QTOF-MS method was developed to monitor the presence of secreted destruxins in two model food plants for the application of this fungal biocontrol agent, namely, strawberry and maize. The liquid chromatography-mass spectrometric assay for destruxin trace analysis is combined with a novel QuEChERS-based extraction protocol. The whole assay was optimized for the application in these crops, and it allows quantitative analysis of the major M. brunneum metabolites destruxin A, 1, destruxin B, 2, and destruxin E, 3, down to the parts per billion range. In strawberry, limits of quantitation (LOQs) were found to be <2.0 ppb for all analytes; in maize LOQs were found to be <3.2 ppb for destruxin A and destruxin B. Destruxin E showed a distinctive loss of recovery in maize and was excluded from further quantitative analysis in this crop. For both crops assay linearities ranged from the LOQs to 100 ppb, interassay repeatabilities (RSD) were found to be better than 16.4%, and accuracies ranged from 83.5 to 105.3% (assessed at four spiking levels between 5 and 75 ppb).
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Affiliation(s)
- Judith Taibon
- †Institute of Pharmacy, Department of Pharmacognosy, CCB - Centrum of Chemistry and Biomedicine, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria
- ‡Institute of Microbiology, University of Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria
| | - Sonja Sturm
- †Institute of Pharmacy, Department of Pharmacognosy, CCB - Centrum of Chemistry and Biomedicine, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria
| | - Christoph Seger
- †Institute of Pharmacy, Department of Pharmacognosy, CCB - Centrum of Chemistry and Biomedicine, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria
- #Institute of Medical and Chemical Laboratory Diagnostics (ZIMCL), University Hospital Innsbruck, Anichstraße 35, A-6020 Innsbruck, Austria
| | - Hermann Strasser
- ‡Institute of Microbiology, University of Innsbruck, Technikerstraße 25, A-6020 Innsbruck, Austria
| | - Hermann Stuppner
- †Institute of Pharmacy, Department of Pharmacognosy, CCB - Centrum of Chemistry and Biomedicine, University of Innsbruck, Innrain 80/82, A-6020 Innsbruck, Austria
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Cautain B, de Pedro N, Schulz C, Pascual J, da S. Sousa T, Martin J, Pérez-Victoria I, Asensio F, González I, Bills GF, Reyes F, Genilloud O, Vicente F. Identification of the Lipodepsipeptide MDN-0066, a Novel Inhibitor of VHL/HIF Pathway Produced by a New Pseudomonas Species. PLoS One 2015; 10:e0125221. [PMID: 26018559 PMCID: PMC4445906 DOI: 10.1371/journal.pone.0125221] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 03/23/2015] [Indexed: 01/08/2023] Open
Abstract
Throughout recent history, metabolites of microbial origin have had an extraordinary impact on the welfare of humanity. In fact, natural products have largely been –and still are– considered an exceedingly valuable platform for the discovery of new drugs against diverse pathologies. Such value is partly due to their higher complexity and chemical diversity as compared to those of synthetic and combinatorial compounds. Mutations in the Von Hippel-Lindau (vhl) gene are responsible for VHL disease, congenital polycythemia, and are found in many sporadic tumor types. The primary cause of morbidity and mortality for these patients arises from progression of Renal Cell Carcinoma (RCC) or end-stage renal disease. Inactivation of the Von Hippel-Lindau (vhl) tumor suppressor gene arises in the majority of Renal Cell Carcinoma (RCC) as well as in other types of cancer and is associated with a high degree of vascularization and poor prognosis. Loss of pVHL function thus represents a pathognomonic molecular defect for therapeutic exploitation. In this study, renal carcinoma cell lines with naturally occurring vhl mutations (RCC4 VA) and their genetically matched wild-type vhl (RCC4 VHL) counterparts were seeded onto 96-well plates and treated with a collection of 1,040 organic extracts obtained from 130 bacterial strains belonging to at least 25 genera of the phyla Actinobacteria, Firmicutes, Proteobacteria and Bacteroidetes. This strategy allowed us to identify several extracts obtained from bacterial strain F-278,770T, the type strain of the recently proposed new species Pseudomonas granadensis, showing biological activities not associated with previously known bioactive metabolites. The fractionation and structural elucidation of one of these extracts led to the discovery of a new lipodepsipeptide (MDN-0066) with specific toxicity in pVHL deficient cells that is not detectable in cells with pVHL expression rescue. This specific toxicity is associated with apoptosis induction in VHL deficient cell line as demonstrated with PARP activation and Annexin V staining. Our study demonstrated the feasibility of selectively targeting the loss of the vhl tumor suppressor gene for potential clinical benefit. Our results may have great impact on the development of new targeted therapies from natural products for the treatment of cancer and other genetic diseases.
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Affiliation(s)
- Bastien Cautain
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
- * E-mail:
| | - Nuria de Pedro
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Christian Schulz
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Javier Pascual
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Thiciana da S. Sousa
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Jesús Martin
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Ignacio Pérez-Victoria
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Francisco Asensio
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Ignacio González
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Gerald F. Bills
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Fernando Reyes
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Olga Genilloud
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
| | - Francisca Vicente
- Fundación MEDINA, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 3, 18016 Granada, Spain
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46
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Fukuda T, Sudoh Y, Tsuchiya Y, Okuda T, Matsuura N, Motojima A, Oikawa T, Igarashi Y. Hikiamides A-C, Cyclic Pentadepsipeptides from Fusarium sp. TAMA 456. J Nat Prod 2015; 78:797-802. [PMID: 25871340 DOI: 10.1021/np501047a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Three new cyclic pentadepsipeptides, hikiamides A-C (1-3), were isolated from the culture extract of Fusarium sp. TAMA 456. The structures were determined by spectroscopic analysis using NMR and MS, and the absolute configurations were established by using Marfey's method and chiral HPLC analysis. Hikiamides induced the differentiation of murine ST-13 preadipocytes into mature adipocytes at 2 μM and adiponectin mRNA expression (5- to 13-fold higher than control). They also induced PPAR-γ-dependent gene expression at a concentration from 0.63 to 10 μM in a gene reporter assay.
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Affiliation(s)
- Takao Fukuda
- †Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
| | - Yuri Sudoh
- ‡Hyphagenesis Inc., 6-2-37 Tamagawa Gakuen, Machida, Tokyo 194-0041, Japan
| | - Yuki Tsuchiya
- ‡Hyphagenesis Inc., 6-2-37 Tamagawa Gakuen, Machida, Tokyo 194-0041, Japan
| | - Toru Okuda
- §Botanical Gardens, The University of Tokyo, 3-7-1 Hakusan, Bunkyo, Tokyo 112-0001, Japan
| | - Nobuyasu Matsuura
- ⊥Department of Life Science, Faculty of Science, Okayama University of Science, 1-1-1 Tsushima-naka, Kita-ku, Okayama 700-0005, Japan
| | - Atsuko Motojima
- ∥Department of Nutritional Biochemistry, School of Nutrition and Dietetics, Kanagawa University of Human Services, 1-10-1 Heisei-cho, Yokosuka, Kanagawa 238-8522, Japan
| | - Tsutomu Oikawa
- ∥Department of Nutritional Biochemistry, School of Nutrition and Dietetics, Kanagawa University of Human Services, 1-10-1 Heisei-cho, Yokosuka, Kanagawa 238-8522, Japan
| | - Yasuhiro Igarashi
- †Biotechnology Research Center and Department of Biotechnology, Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
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47
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Elkobi-Peer S, Carmeli S. New prenylated aeruginosin, microphycin, anabaenopeptin and micropeptin analogues from a Microcystis bloom material collected in Kibbutz Kfar Blum, Israel. Mar Drugs 2015; 13:2347-75. [PMID: 25884445 PMCID: PMC4413215 DOI: 10.3390/md13042347] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 03/16/2015] [Accepted: 03/18/2015] [Indexed: 11/25/2022] Open
Abstract
Thirteen new and eighteen known natural products were isolated from a bloom material of an assembly of various Microcystis spp. collected in November, 2008, from a commercial fishpond near Kibbutz Kfar Blum, the Jordan Valley, Israel. The new natural products included the prenylated aeruginosin KB676 (1), microphycin KB921 (2), anabaenopeptins KB906 (3) and KB899 (4) and micropeptins KB928 (5), KB956 (6), KB970A (7), KB970B (8), KB984 (9), KB970C (10), KB1048 (11), KB992 (12) and KB1046 (13). Their structures were elucidated primarily by interpretation of their 1D and 2D nuclear magnetic resonance spectra and high-resolution mass spectrometry. Marfey's and chiral-phase high performance liquid chromatography methods were used to determine the absolute configurations of their chiral centers. Aeruginosin KB676 (1) contains the rare (2S,3aS,6S,7aS)-Choi and is the first prenylated aeruginosin derivative described in the literature. Compounds 1 and 5-11 inhibited trypsin with sub-μM IC50s, while Compounds 11-13 inhibited chymotrypsin with sub-μM IC50s. The structures and biological activities of the new natural products and our procedures of dereplication are described.
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Affiliation(s)
- Shira Elkobi-Peer
- Raymond and Beverly Sackler Faculty of Exact Sciences, Raymond and Beverly Sackler School of Chemistry, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.
| | - Shmuel Carmeli
- Raymond and Beverly Sackler Faculty of Exact Sciences, Raymond and Beverly Sackler School of Chemistry, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.
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48
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Vining O, Medina RA, Mitchell EA, Videau P, Li D, Serrill JD, Kelly JX, Gerwick WH, Proteau PJ, Ishmael JE, McPhail KL. Depsipeptide companeramides from a Panamanian marine cyanobacterium associated with the coibamide producer. J Nat Prod 2015; 78:413-20. [PMID: 25562664 PMCID: PMC4380200 DOI: 10.1021/np5007907] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Two new cyclic depsipeptides, companeramides A (1) and B (2), have been isolated from the phylogenetically characterized cyanobacterial collection that yielded the previously reported cancer cell toxin coibamide A (collected from Coiba Island, Panama). The planar structures of the companeramides, which contain 3-amino-2-methyl-7-octynoic acid (Amoya), hydroxy isovaleric acid (Hiva), and eight α-amino acid units, were established by NMR spectroscopy and mass spectrometry. The absolute configuration of each companeramide was assigned using a combination of Marfey's methodology and chiral-phase HPLC analysis of complete and partial hydrolysis products compared to commercial and synthesized standards. Companeramides A (1) and B (2) showed high nanomolar in vitro antiplasmodial activity but were not overtly cytotoxic to four human cancer cell lines at the doses tested.
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Affiliation(s)
- Oliver
B. Vining
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Rebecca A. Medina
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Edward A. Mitchell
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Patrick Videau
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Dong Li
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Jeffrey D. Serrill
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Jane X. Kelly
- Veterans
Affairs Medical Center, Portland, Oregon 97239, United States
| | - William H. Gerwick
- Center
for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography
and Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, California 92093, United States
| | - Philip J. Proteau
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Jane E. Ishmael
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
| | - Kerry L. McPhail
- Department
of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, United States
- Tel: +1 541 737 5808. Fax: +1 541 737 3999. E-mail:
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49
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Theodore CM, Lorig-Roach N, Still PC, Johnson TA, Drašković M, Schwochert JA, Naphen CN, Crews MS, Barker SA, Valeriote FA, Lokey RS, Crews P. Biosynthetic products from a nearshore-derived gram-negative bacterium enable reassessment of the kailuin depsipeptides. J Nat Prod 2015; 78:441-52. [PMID: 25699470 PMCID: PMC4699550 DOI: 10.1021/np500840n] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Sampling of California nearshore sediments resulted in the isolation of a Gram-negative bacterium, Photobacterium halotolerans, capable of producing unusual biosynthetic products. Liquid culture in artificial seawater-based media provided cyclic depsipeptides including four known compounds, kailuins B-E (2-5), and two new analogues, kailuins G and H (7 and 8). The structures of the new and known compounds were confirmed through extensive spectroscopic and Marfey's analyses. During the course of these studies, a correction was made to the previously reported double-bond geometry of kailuin D (4). Additionally, through the application of a combination of derivatization with Mosher's reagent and extensive (13)C NMR shift analysis, the previously unassigned chiral center at position C-3 of the β-acyloxy group of all compounds was determined. To evaluate bioactivity and structure-activity relationships, the kailuin core (13) and kailuin lactam (14) were prepared by chiral synthesis using an Fmoc solid-phase peptide strategy followed by solution-phase cyclization. All isolated compounds and synthetic cores were assayed for solid tumor cell cytotoxicity and showed only minimal activity, contrary to other published reports. Additional phenotypic screenings were done on 4 and 5, with little evidence of activity.
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Affiliation(s)
- Christine M. Theodore
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Nicholas Lorig-Roach
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Patrick C. Still
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Tyler A. Johnson
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Marija Drašković
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Joshua A. Schwochert
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Cassandra N. Naphen
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Mitchell S. Crews
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Simone A. Barker
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Frederick A. Valeriote
- Josephine Ford Cancer Center, Henry Ford Health System, Detroit, Michigan 48202, United States
| | - R. Scott Lokey
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Phillip Crews
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
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50
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Abstract
The recent advances in the development of antibody and other drug conjugates for targeted cancer treatment have further increased the need for powerful cancer cell growth inhibitors. Toward that objective we have extended our earlier discovery of the remarkable anticancer bacillistatins 1 and 2 from Bacillus silvestris to SAR and other structural modifications such as availability of a free hydroxy group for antibody-drug conjugate (ADC) and other prodrug linkage. That direction has resulted in seven structural modifications designated silstatins 1-8 (7a, 8a, 8b, 14a, 15a, 15b, 18a, and 18b), where the exceptional cancer cell growth inhibition of some of them are in the range GI50 10(-3)-10(-4) μM/mL. Silstatin 7 (18a) was converted to a glucuronic conjugate (28) that displayed an impressive reduction in toxicity during transport.
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Affiliation(s)
- George R Pettit
- Department of Chemistry and Biochemistry, Arizona State University, P.O. Box 871604, Tempe, Arizona 85287-1604, United States
| | - Pablo M Arce
- Department of Chemistry and Biochemistry, Arizona State University, P.O. Box 871604, Tempe, Arizona 85287-1604, United States
| | - Jean-Charles Chapuis
- Department of Chemistry and Biochemistry, Arizona State University, P.O. Box 871604, Tempe, Arizona 85287-1604, United States
| | - Christian B Macdonald
- Department of Chemistry and Biochemistry, Arizona State University, P.O. Box 871604, Tempe, Arizona 85287-1604, United States
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