1
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Kankanamge S, Khalil ZG, Capon RJ. Tepuazines A-E: Phenazine Glycosides from a Venezuelan Quartz-Rich (Tepui) Cave Soil-Derived Streptomyces virginiae CMB-CA091. JOURNAL OF NATURAL PRODUCTS 2024. [PMID: 38517947 DOI: 10.1021/acs.jnatprod.4c00042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
Investigation of the secondary metabolites of Streptomyces virginiae CMB-CA091 isolated from the quartz-rich (tepui) soil of a cave in Venezuela yielded two new dimeric phenazine glycosides, tepuazines A and B (1 and 2); three new monomeric phenazine glycosides, tepuazines C-E (3-5); and a series of known analogues, baraphenazine G (6), phenazinolin D (7), izumiphenazine C (8), 4-methylaminobenzoyl-l-rhamnopyranoside (9), and 2-acetamidophenol (10). Structures were assigned to 1-10 on the basis of detailed spectroscopic analysis and biosynthetic considerations, with 1 and 2 featuring a rare 2-oxabicyclo[3.3.1]nonane-like ring C/D bridge shared with only a handful of known Streptomyces natural products. We propose a plausible convergent biosynthetic relationship linking all known members of this structure class that provides a rationale for the observed ring C/D configuration.
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Affiliation(s)
- Sarani Kankanamge
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Zeinab G Khalil
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Robert J Capon
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
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2
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Le DL, Nguyen LA, Vo NB, Nguyen TTT, Ngo QA, Retailleau P, Nguyen TB. Sodium sulfide-promoted regiodefined redox condensation of o-nitroanilines with aryl ketones to benzo[ a]phenazines and quinoxalines. Org Biomol Chem 2024; 22:1167-1171. [PMID: 38226902 DOI: 10.1039/d3ob02028b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Inexpensive sodium sulfide trihydrate was found to promote unprecedented 6e-regio-predefined redox condensation of o-nitroanilines with α-tetralones to benzo[a]phenazines. The method was also successfully extended to acetophenones and higher homologs as reducing partners to provide 2-phenylquinoxalines. Compared to traditional approaches toward benzo[a]phenazine and quinoxaline cores starting with o-phenylenediamines, the present strategy could afford these heterocycles with well-defined regiochemistry based on the structure of starting o-nitroanilines.
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Affiliation(s)
- Duc Long Le
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
| | - Le Anh Nguyen
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
| | - Ngoc Binh Vo
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
| | - Thi Thu Tram Nguyen
- Department of Chemistry, Faculty of Basic Science, Can Tho University of Medicine and Pharmacy, Vietnam
| | - Quoc Anh Ngo
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198 Gif-sur-Yvette, France.
| | - Thanh Binh Nguyen
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198 Gif-sur-Yvette, France.
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3
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Dos Santos JDN, Pinto E, Martín J, Vicente F, Reyes F, Lage OM. Unveiling the bioactive potential of Actinomycetota from the Tagus River estuary. Int Microbiol 2024:10.1007/s10123-024-00483-0. [PMID: 38236380 DOI: 10.1007/s10123-024-00483-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/28/2023] [Accepted: 01/10/2024] [Indexed: 01/19/2024]
Abstract
The increase in global travel and the incorrect and excessive use of antibiotics has led to an unprecedented rise in antibiotic resistance in bacterial and fungal populations. To overcome these problems, novel bioactive natural products must be discovered, which may be found in underexplored environments, such as estuarine habitats. In the present work, estuarine actinomycetotal strains were isolated with conventional and iChip techniques from the Tagus estuary in Alcochete, Portugal, and analysed for different antimicrobial bioactivities. Extracts were produced from the isolated cultures and tested for bioactivity against Staphylococcus aureus ATCC 29213, Escherichia coli ATCC 25922, Aspergillus fumigatus ATCC 240305, Candida albicans ATCC 10231 and Trichophyton rubrum FF5. Furthermore, bioactive extracts were subjected to dereplication by high-performance liquid chromatography (HPLC) and high-resolution mass spectrometry (HRMS) to putatively identify their chemical components. In total, 105 isolates belonging to 3 genera were obtained. One which was isolated, MTZ3.1 T, represents a described novel taxon for which the name Streptomyces meridianus was proposed. Regarding the bioactivity testing, extracts from 12 strains proved to be active against S. aureus, 2 against E. coli, 4 against A. fumigatus, 3 against C. albicans and 10 against T. rubrum. Dereplication of bioactive extracts showed the presence of 28 known bioactive molecules, 35 hits have one or more possible matches in the DNP and 18 undescribed ones. These results showed that the isolated bacteria might be the source of new bioactive natural products.
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Affiliation(s)
- José Diogo Neves Dos Santos
- Department of Biology, Faculty of Sciences, University of Porto, Rua Do Campo Alegre, S/N, 4169-007, Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal.
| | - Eugénia Pinto
- Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
- Laboratory of Microbiology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge de Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Jesús Martín
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, Avenida del Conocimiento, 34 Parque Tecnológico de Ciencias de La Salud, 18016, Granada, Spain
| | - Francisca Vicente
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, Avenida del Conocimiento, 34 Parque Tecnológico de Ciencias de La Salud, 18016, Granada, Spain
| | - Fernando Reyes
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, Avenida del Conocimiento, 34 Parque Tecnológico de Ciencias de La Salud, 18016, Granada, Spain
| | - Olga Maria Lage
- Department of Biology, Faculty of Sciences, University of Porto, Rua Do Campo Alegre, S/N, 4169-007, Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
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4
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Zhuang Y, Yang F, Menon A, Song JM, Espinoza RV, Schultz PJ, Garner AL, Tripathi A. An ECD and NMR/DP4+ Computational Pipeline for Structure Revision and Elucidation of Diphenazine-Based Natural Products. JOURNAL OF NATURAL PRODUCTS 2023; 86:1801-1814. [PMID: 37463274 DOI: 10.1021/acs.jnatprod.3c00306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Discovery and structure elucidation of natural products available in infinitesimally small quantities are recognized challenge. This challenge is epitomized by the diphenazine class of molecules that contain three bridged stereocenters, several conformations, ring fusions, and multiple spatially isolated phenols. Because empirical NMR and spatial analyses using ROESY/NOESY were unsuccessful in tackling these challenges, we developed a computational pipeline to determine the relative and absolute configurations and phenol positions of diphenazines as inhibitors of eukaryotic translation initiation factor 4E (eIF4E) protein-protein interactions. In this pipeline, we incorporated ECD and GIAO NMR calculations coupled with a DP4+ probability measure, enabling the structure revision of phenazinolin D (4), izumiphenazine A (5), and baraphenazine G (7) and the structure characterization of two new diphenazines, baraphenazine H (3) and izumiphenazine E (6). Importantly, through these efforts, we demonstrate the feasibility of NMR/DP4+ analysis for the determination of phenol positions in phenazine-based molecules, further expanding the limits of computational methods for the structure elucidation of complex natural products.
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Affiliation(s)
- Yihao Zhuang
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, 1600 Huron Parkway, NCRC B520, Ann Arbor, Michigan 48109, United States
- Natural Product Discovery Core, Mary Sue Coleman Hall, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, Michigan 48109, United States
| | - Fei Yang
- Natural Product Discovery Core, Mary Sue Coleman Hall, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, Michigan 48109, United States
| | - Arya Menon
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, 1600 Huron Parkway, NCRC B520, Ann Arbor, Michigan 48109, United States
| | - James M Song
- Program of Chemical Biology, Mary Sue Coleman Hall, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, Michigan 48109, United States
| | - Rosa V Espinoza
- Natural Product Discovery Core, Mary Sue Coleman Hall, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, Michigan 48109, United States
- Program of Chemical Biology, Mary Sue Coleman Hall, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, Michigan 48109, United States
| | - Pamela J Schultz
- Natural Product Discovery Core, Mary Sue Coleman Hall, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, Michigan 48109, United States
| | - Amanda L Garner
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, 1600 Huron Parkway, NCRC B520, Ann Arbor, Michigan 48109, United States
| | - Ashootosh Tripathi
- Department of Medicinal Chemistry, College of Pharmacy, University of Michigan, 1600 Huron Parkway, NCRC B520, Ann Arbor, Michigan 48109, United States
- Natural Product Discovery Core, Mary Sue Coleman Hall, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, Michigan 48109, United States
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5
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Lee HS, Kang JS, Cho DY, Choi DK, Shin HJ. Isolation, Structure Determination, and Semisynthesis of Diphenazine Compounds from a Deep-Sea-Derived Strain of the Fungus Cystobasidium laryngis and Their Biological Activities. JOURNAL OF NATURAL PRODUCTS 2022; 85:857-865. [PMID: 35302779 DOI: 10.1021/acs.jnatprod.1c00985] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Phenazostatins E-J (1-6), six new diphenazine derivatives, were isolated from the EtOAc extract of the culture broth of a strain of Cystobasidium laryngis derived from deep-sea sediments of the Indian Ocean Ridge. The structures of 1-6 were elucidated based on the HRESIMS and 1D and 2D NMR spectra. The absolute configurations of 1-6, except for 3 and 6, were determined by modified Mosher's method, ECD data analysis, and calculations of optical rotation values. The absolute configurations of 3 and 6 were identified by chemical derivatization and comparing the specific rotation values with those of semisynthetic 3 obtained by the oxidation of 1 and saphenic acid (7). Phenazostatin J (6) was semisynthesized using saphenic acid (7) to prepare additional material for biological testing. During the purification of semisynthetic 6, a side product 9 was obtained from the reaction mixture along with 6. Compounds 1-6, along with previously reported 7 and 8, were assessed for anti-neuroinflammatory activity in LPS-induced BV-2 microglia cells. Compound 6 exhibited the highest anti-neuroinflammatory effect with an IC50 value of 0.30 μM, but it showed cytotoxicity at higher concentrations than 1.0 μM. Accordingly, cytotoxicities of 1-9 were evaluated against six human cancer cell lines. Among tested compounds, 6 and 9 showed potent cytotoxicity (IC50 values: 7.7-72 nM). Especially, 6 exhibited the strongest cytotoxicity with an IC50 value of 7.7 nM against the NUGC-3 (stomach) cell line, displaying 19-fold stronger activity than the positive control, adriamycin.
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Affiliation(s)
- Hwa-Sun Lee
- Marine Natural Products Chemistry Laboratory, Korea Institute of Ocean Science Technology, 385 Haeyang-ro, Yeoungdo-gu, Busan 49111, Republic of Korea
| | - Jong Soon Kang
- Laboratory Animal Resource Center, Korea Research Institute of Bioscience and Biotechnology, 30 Yeoungudanji-ro, Cheongju 28116, Republic of Korea
| | - Duk-Yeon Cho
- Department of Applied Life Science, Graduate School of Konkuk University, Chungju 27478, Republic of Korea
| | - Dong-Kug Choi
- Department of Applied Life Science, Graduate School of Konkuk University, Chungju 27478, Republic of Korea
| | - Hee Jae Shin
- Marine Natural Products Chemistry Laboratory, Korea Institute of Ocean Science Technology, 385 Haeyang-ro, Yeoungdo-gu, Busan 49111, Republic of Korea
- Department of Marine Biotechnology, University of Science and Technology (UST), 217 Gajung-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
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6
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Dong J, He B, Wang R, Zuo X, Zhan R, Hu L, Li Y, He J. Characterization of the diastaphenazine/izumiphenazine C biosynthetic gene cluster from plant endophyte Streptomyces diastaticus W2. Microb Biotechnol 2021; 15:1168-1177. [PMID: 34487423 PMCID: PMC8966011 DOI: 10.1111/1751-7915.13909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 07/23/2021] [Indexed: 11/29/2022] Open
Abstract
Two phenazine compounds, diastaphenazine and izumiphenazine C, with complex structures and promising antitumour activity have been isolated from the plant endophytic actinomycete Streptomyces diastaticus W2. Their putative biosynthetic gene cluster (dap) was identified by heterologous expression and gene knockout. There are twenty genes in the dap cluster. dap14‐19 related to shikimic pathway were potentially involved in the precursor chorismic acid biosynthesis, and dapBCDEFG were confirmed to be responsible for the biosynthesis of the dibenzopyrazine ring, the nuclear structure of phenazines. Two transcriptional regulatory genes dapR and dap4 played the positive regulatory roles on the phenazine biosynthetic pathway. Most notably, the dimerization of the dibenzopyrazine ring in diastaphenazine and the loading of the complex side chain in izumiphenazine C could be catalysed by the cyclase homologous gene dap5, suggesting an unusual modification strategy tailoring complex phenazine biosynthesis. Moreover, metabolite analysis of the gene deletion mutant strain S. albus::23C5Δdap2 and substrate assay of the methyltransferase Dap2 clearly revealed the biosynthetic route of the complex side chain in izumiphenazine C.
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Affiliation(s)
- Junli Dong
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Beibei He
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ruinan Wang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiuli Zuo
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Rui Zhan
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Linfang Hu
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Science, Yunnan University, Kunming, 650091, China
| | - Yiqing Li
- Key Laboratory of Microbial Diversity in Southwest China, Ministry of Education, College of Life Science, Yunnan University, Kunming, 650091, China
| | - Jing He
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
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7
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Chen XB, Huang ST, Li J, Yang Q, Yang L, Yu F. Highly Regioselective and Chemoselective [3 + 3] Annulation of Enaminones with ortho-Fluoronitrobenzenenes: Divergent Synthesis of Aposafranones and Their N-Oxides. Org Lett 2021; 23:3032-3037. [PMID: 33792341 DOI: 10.1021/acs.orglett.1c00710] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A base-promoted unprecedented strategy for the regioselective and chemoselective divergent synthesis of highly functionalized aposafranones and their N-oxides has been developed from the [3 + 3] annulation of enaminones with o-fluoronitrobenzenenes. This novel synthetic strategy offers an alternative method for the construction of aposafranones and their N-oxides are meaningful in the fields of both biology and organic synthesis. The established protocol explores the annulation scope of enaminones, and it expands the application of nitro-based cyclization.
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Affiliation(s)
- Xue-Bing Chen
- College of Science, Honghe University, Mengzi, 661199, Yunnan, China
| | - Shun-Tao Huang
- College of Science, Honghe University, Mengzi, 661199, Yunnan, China
| | - Jie Li
- College of Science, Honghe University, Mengzi, 661199, Yunnan, China
| | - Qi Yang
- College of Science, Honghe University, Mengzi, 661199, Yunnan, China
| | - Li Yang
- College of Science, Honghe University, Mengzi, 661199, Yunnan, China
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650504, People's Republic of China
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8
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Inhibition of cholinesterases by safranin O: Integration of inhibition kinetics with molecular docking simulations. Arch Biochem Biophys 2020; 698:108728. [PMID: 33345803 DOI: 10.1016/j.abb.2020.108728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/03/2020] [Accepted: 12/08/2020] [Indexed: 12/11/2022]
Abstract
In the present study, the inhibitory mechanisms and effects of a synthetic phenazine dye, safranin O (SO) on human plasma butyrylcholinesterase (BChE), human erythrocyte acetylcholinesterase (AChE) and recombinant BChE mutants were investigated. Kinetic studies showed the following information: SO leaded to linear competitive inhibition of human plasma BChE with Ki = 0.44 ± 0.085 μM; α = ∞. It acted as a hyperbolic noncompetitive inhibitor of human erythrocyte AChE with Ki = 0.69 ± 0.13; α = 1; β = 0.08 ± 0.02. On the other hand, the inhibitory effects of SO on two BChE mutants, where A328 was modified to either F or Y, revealed differences in terms of inhibitory patterns and Ki values, compared to the obtained results with recombinant wild type BChE. SO was found to act as a linear competitive inhibitor of A328F and A328Y BChE mutants. Compared to recombinant wild type BChE, A328Y and A328F BChE mutants caused a 4- and 10-fold decrease in Ki value for SO, respectively. These findings were supported by molecular modelling studies. In conclusion, SO is a potent inhibitor of human cholinesterases and may be useful in the design and development of new drugs for the treatment of AD.
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Wang X, Abbas M, Zhang Y, Elshahawi SI, Ponomareva LV, Cui Z, Van Lanen SG, Sajid I, Voss SR, Shaaban KA, Thorson JS. Baraphenazines A-G, Divergent Fused Phenazine-Based Metabolites from a Himalayan Streptomyces. JOURNAL OF NATURAL PRODUCTS 2019; 82:1686-1693. [PMID: 31117525 PMCID: PMC6630045 DOI: 10.1021/acs.jnatprod.9b00289] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The structures and bioactivities of three unprecedented fused 5-hydroxyquinoxaline/alpha-keto acid amino acid metabolites (baraphenazines A-C, 1-3), two unique diastaphenazine-type metabolites (baraphenazines D and E, 4 and 5) and two new phenazinolin-type (baraphenazines F and G, 6 and 7) metabolites from the Himalayan isolate Streptomyces sp. PU-10A are reported. This study highlights the first reported bacterial strain capable of producing diastaphenazine-type, phenazinolin-type, and izumiphenazine A-type metabolites and presents a unique opportunity for the future biosynthetic interrogation of late-stage phenazine-based metabolite maturation.
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Affiliation(s)
- Xiachang Wang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Muhammad Abbas
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quid-i-Azam campus, Lahore 54590, Pakistan
| | - Yinan Zhang
- Jiangsu Key Laboratory for Functional Substances of Chinese Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, People’s Republic of China
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Sherif I. Elshahawi
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Irvine, California 92618, United States
| | - Larissa V. Ponomareva
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Zheng Cui
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Steven G. Van Lanen
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
| | - Imran Sajid
- Department of Microbiology and Molecular Genetics, University of the Punjab, Quid-i-Azam campus, Lahore 54590, Pakistan
| | - S. Randal Voss
- Department of Neuroscience, University of Kentucky, Lexington, Kentucky 40506, United States
- Ambystoma Genetic Stock Center, University of Kentucky, Lexington, Kentucky 40506, United States
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Khaled A. Shaaban
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
- Corresponding Authors.,
| | - Jon S. Thorson
- Center for Pharmaceutical Research and Innovation, University of Kentucky, Lexington, Kentucky 40536, United States
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536, United States
- Corresponding Authors.,
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11
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Santamaría RI, Sevillano L, Martín J, Genilloud O, González I, Díaz M. The XRE-DUF397 Protein Pair, Scr1 and Scr2, Acts as a Strong Positive Regulator of Antibiotic Production in Streptomyces. Front Microbiol 2018; 9:2791. [PMID: 30524403 PMCID: PMC6262351 DOI: 10.3389/fmicb.2018.02791] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 10/30/2018] [Indexed: 12/18/2022] Open
Abstract
The xenobiotic response element (XRE) transcription factors belong to a regulator family frequently found in Streptomyces that are often followed by small proteins with a DUF397 domain. In fact, the pair XRE-DUF397 has been proposed to comprise toxin–antitoxin (TA) type II systems. In this work, we demonstrate that one of these putative TA-systems, encoded by the genes SCO4441 and SCO4442 of Streptomyces coelicolor, and denominated Scr1/Scr2 (which stands for S. coelicolorregulator), does not behave as a toxin–antitoxin system under the conditions used as was originally expected. Instead the pair Scr1/Scr2 acts as a strong positive regulator of endogenous antibiotic production in S. coelicolor. The analysis of the 19 Streptomyces strains tested determined that overexpression of the pair Scr1/Scr2 drastically induces the production of antibiotics not only in S. coelicolor, but also in Streptomyces lividans, Streptomyces peucetius, Streptomyces steffisburgensis and Streptomyces sp. CA-240608. Our work also shows that Scr1 needs Scr2 to exert positive regulation on antibiotic production.
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Affiliation(s)
- Ramón I Santamaría
- Instituto de Biología Funcional y Genómica, Departamento de Microbiología y Genética, Consejo Superior de Investigaciones Científicas, Universidad de Salamanca, Salamanca, Spain
| | - Laura Sevillano
- Instituto de Biología Funcional y Genómica, Departamento de Microbiología y Genética, Consejo Superior de Investigaciones Científicas, Universidad de Salamanca, Salamanca, Spain
| | - Jesús Martín
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Granada, Spain
| | - Olga Genilloud
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Granada, Spain
| | - Ignacio González
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Granada, Spain
| | - Margarita Díaz
- Instituto de Biología Funcional y Genómica, Departamento de Microbiología y Genética, Consejo Superior de Investigaciones Científicas, Universidad de Salamanca, Salamanca, Spain
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Chunyu WX, Zhao JY, Ding ZG, Wang YX, Han XL, Li MG, Wen ML. A New Dichlorinated Aromatic Lactone from the Tin Mine Tailings-Derived Fungus Torula sp. YIM DT 10072. Chem Nat Compd 2018. [DOI: 10.1007/s10600-018-2372-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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13
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Chunyu WX, Zhao JY, Ding ZG, Han XL, Wang YX, Ding JH, Wang F, Li MG, Wen ML. A new cyclohexenone from the tin mine tailings-derived fungus Aspergillus flavus YIM DT 10012. Nat Prod Res 2018; 33:113-116. [PMID: 29376405 DOI: 10.1080/14786419.2018.1431636] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A new cyclohexenone, named phomaligol D (1), together with two known compounds, kojic acid (2) and phomaligol A (3) were isolated from the tin mine tailings-derived fungus Aspergillus flavus YIM DT 10012. Their structures were elucidated by detailed analysis of spectroscopic data.
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Affiliation(s)
- Wei-Xun Chunyu
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China.,e Department of Pathogen Biology and Immunology , Kunming Medical University , Kunming , PR China
| | - Jiang-Yuan Zhao
- b Key Laboratory of Medicinal Chemistry for Natural Resource of the Ministry of Education , Yunnan University , Kunming , PR China
| | - Zhang-Gui Ding
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
| | - Xiu-Lin Han
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
| | - Yong-Xia Wang
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
| | - Jian-Hai Ding
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China.,c Engineering and Technology Research Center of Liupanshan Resources, College of Chemistry and Chemical Engineering , Ningxia Normal University , Guyuan , PR China
| | - Fei Wang
- d BioBioPha Co., Ltd. , Kunming , PR China
| | - Ming-Gang Li
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
| | - Meng-Liang Wen
- a Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming , PR China
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14
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Ding JH, Ding ZG, Chunyu WX, Zhao JY, Wang HB, Liu SW, Wang F. Three new drimane sesquiterpenoids from cultures of the fungus Penicillium sp. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2017; 19:780-785. [PMID: 27892687 DOI: 10.1080/10286020.2016.1261830] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 11/15/2016] [Indexed: 06/06/2023]
Abstract
Three new drimane sesquiterpenoids, 12-hydroxyalbrassitriol (1), drim-8(12)-en-6β,7α, 9α,11-tetraol (2), and drim-68(12)-dien-9α,11-diol (3), along with one known analog albrassitriol (4), were isolated from cultures of the tin mine tailings-associated fungus Penicillium sp. The new structures were determined on the basis of extensive spectroscopic analyses. All compounds were tested for their cytotoxicities against five human cancer cell lines.
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Affiliation(s)
- Jian-Hai Ding
- a Engineering and Technology Research Center of Liupanshan Resources, College of Chemistry and Chemical Engineering , Ningxia Normal University , Guyuan 756000 , China
| | - Zhang-Gui Ding
- b Key Laboratory for Microbial Resources, Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming 650091 , China
| | - Wei-Xun Chunyu
- b Key Laboratory for Microbial Resources, Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming 650091 , China
| | - Jiang-Yuan Zhao
- b Key Laboratory for Microbial Resources, Ministry of Education , Yunnan Institute of Microbiology, Yunnan University , Kunming 650091 , China
| | - Hai-Bin Wang
- a Engineering and Technology Research Center of Liupanshan Resources, College of Chemistry and Chemical Engineering , Ningxia Normal University , Guyuan 756000 , China
| | - Shi-Wei Liu
- a Engineering and Technology Research Center of Liupanshan Resources, College of Chemistry and Chemical Engineering , Ningxia Normal University , Guyuan 756000 , China
| | - Fei Wang
- c BioBioPha Co., Ltd. , Kunming 650201 , China
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Chunyu WX, Ding ZG, Zhao JY, Wang YX, Han XL, Li MG, Wen ML. Two new diketopiperazines from the tin mine tailings-derived fungus Schizophyllum commune YIM DT 10058. Nat Prod Res 2017; 31:1566-1572. [DOI: 10.1080/14786419.2016.1274894] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Wei-Xun Chunyu
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Zhang-Gui Ding
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Jiang-Yuan Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource of the Ministry of Education, Yunnan University, Kunming, PR China
| | - Yong-Xia Wang
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Xiu-Lin Han
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Ming-Gang Li
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
| | - Meng-Liang Wen
- Key Laboratory for Conservation and Utilization of Bio-resource, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan Institute of Microbiology, Yunnan University, Kunming, PR China
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16
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Guttenberger N, Blankenfeldt W, Breinbauer R. Recent developments in the isolation, biological function, biosynthesis, and synthesis of phenazine natural products. Bioorg Med Chem 2017; 25:6149-6166. [PMID: 28094222 DOI: 10.1016/j.bmc.2017.01.002] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/29/2016] [Accepted: 01/04/2017] [Indexed: 12/24/2022]
Abstract
Phenazines are natural products which are produced by bacteria or by archaeal Methanosarcina species. The tricyclic ring system enables redox processes, which producing organisms use for oxidation of NADH or for the generation of reactive oxygen species (ROS), giving them advantages over other microorganisms. In this review we summarize the progress in the field since 2005 regarding the isolation of new phenazine natural products, new insights in their biological function, and particularly the now almost completely understood biosynthesis. The review is complemented by a description of new synthetic methods and total syntheses of phenazines.
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Affiliation(s)
- Nikolaus Guttenberger
- Institute of Organic Chemistry, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria; Institute of Chemistry-Analytical Chemistry, University of Graz, Universitaetsplatz 1, 8010 Graz, Austria
| | - Wulf Blankenfeldt
- Structure and Function of Proteins, Helmholtz Centre for Infection Research, Inhoffenstr. 7, 38124 Braunschweig, Germany; Institute for Biochemistry, Biotechnology and Bioinformatics, Technische Universität Braunschweig, Spielmannstr. 7, 38106 Braunschweig, Germany
| | - Rolf Breinbauer
- Institute of Organic Chemistry, Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria.
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Diastaphenazine, a new dimeric phenazine from an endophytic Streptomyces diastaticus subsp. ardesiacus. J Antibiot (Tokyo) 2014; 68:210-2. [PMID: 25227502 DOI: 10.1038/ja.2014.124] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 08/08/2014] [Accepted: 08/13/2014] [Indexed: 11/09/2022]
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18
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Ding ZG, Zhao JY, Li MG, Huang R, Li QM, Cui XL, Zhu HJ, Wen ML. Griseusins F and G, spiro-naphthoquinones from a tin mine tailings-derived alkalophilic Nocardiopsis species. JOURNAL OF NATURAL PRODUCTS 2012; 75:1994-1998. [PMID: 23095059 DOI: 10.1021/np3004936] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Griseusins F (1) and G (2), two 2a-hydro-8a-(2-oxopropyl)-substituted spiro-naphthoquinones with a previously undescribed C23 polyketide skeleton, were isolated from a Yunnan tin mine tailings-derived alkalophilic actinomycete, Nocardiopsis sp. YIM DT266. Their complete structure assignments with the absolute stereochemistry were elucidated by spectroscopic data, X-ray crystal diffraction, calculation of optical rotation, and CD spectroscopic analysis. Compounds 1 and 2 exhibited strong cytotoxicity (IC50 0.37-0.82 μM) and antibacterial activity (MIC 0.80-1.65 μg/mL) against Gram-positive bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) in vitro.
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Affiliation(s)
- Zhang-Gui Ding
- Key Laboratory for Microbial Resources, Key Laboratory of Medicinal Chemistry for Natural Resources, Ministry of Education, Yunnan Institute of Microbiology, Yunnan University , Kunming, 650091, People's Republic of China
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