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Zhang C, Xu Q, Fu J, Wu L, Li Y, Lu Y, Shi Y, Sun H, Li X, Wang L, Hong B. Engineering Streptomyces sp. CPCC 204095 for the targeted high-level production of isatropolone A by elucidating its pathway-specific regulatory mechanism. Microb Cell Fact 2024; 23:113. [PMID: 38622698 PMCID: PMC11020959 DOI: 10.1186/s12934-024-02387-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/05/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND Isatropolone A and C, produced by Streptomyces sp. CPCC 204095, belong to an unusual class of non-benzenoid aromatic compounds and contain a rare seven-membered ring structure. Isatropolone A exhibits potent activity against Leishmania donovani, comparable to the only oral drug miltefosine. However, its variably low productivity represents a limitation for this lead compound in the future development of new anti-leishmaniasis drugs to meet unmet clinical needs. RESULTS Here we first elucidated the regulatory cascade of biosynthesis of isatropolones, which consists of two SARP family regulators, IsaF and IsaJ. Through a series of in vivo and in vitro experiments, IsaF was identified as a pathway-specific activator that orchestrates the transcription of the gene cluster essential for isatropolone biosynthesis. Interestingly, IsaJ was found to only upregulate the expression of the cytochrome P450 monooxygenase IsaS, which is crucial for the yield and proportion of isatropolone A and C. Through targeted gene deletions of isaJ or isaS, we effectively impeded the conversion of isatropolone A to C. Concurrently, the facilitation of isaF overexpression governed by selected promoters, prompted the comprehensive activation of the production of isatropolone A. Furthermore, meticulous optimization of the fermentation parameters was conducted. These strategies culminated in the attainment of an unprecedented maximum yield-980.8 mg/L of isatropolone A-achieved in small-scale solid-state fermentation utilizing the genetically modified strains, thereby establishing the highest reported titer to date. CONCLUSION In Streptomyces sp. CPCC 204095, the production of isatropolone A and C is modulated by the SARP regulators IsaF and IsaJ. IsaF serves as a master pathway-specific regulator for the production of isatropolones. IsaJ, on the other hand, only dictates the transcription of IsaS, the enzyme responsible for the conversion of isatropolone A and C. By engineering the expression of these pivotal genes, we have devised a strategy for genetic modification aimed at the selective and high-yield biosynthesis of isatropolone A. This study not only unveils the unique regulatory mechanisms governing isatropolone biosynthesis for the first time, but also establishes an essential engineering framework for the targeted high-level production of isatropolone A.
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Affiliation(s)
- Cong Zhang
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Qianqian Xu
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Jie Fu
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Linzhuan Wu
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Yihong Li
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Yuan Lu
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Yuanyuan Shi
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Hongmin Sun
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China
| | - Xingxing Li
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China.
| | - Lifei Wang
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China.
| | - Bin Hong
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs and State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, China.
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2
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Fu J, Liu X, Zhang M, Liu J, Li S, Jiang B, Wu L. Di-Isatropolone C, a Spontaneous Isatropolone C Dimer Derivative with Autophagy Activity. Molecules 2024; 29:1477. [PMID: 38611756 PMCID: PMC11013608 DOI: 10.3390/molecules29071477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Isatropolone C from Streptomyces sp. CPCC 204095 features a fused cyclopentadienone-tropolone-oxacyclohexadiene tricyclic moiety in its structure. Herein, we report an isatropolone C dimer derivative, di-isatropolone C, formed spontaneously from isatropolone C in methanol. Notably, the structure of di-isatropolone C resolved by NMR reveals a newly formed cyclopentane ring to associate the two isatropolone C monomers. The configurations of four chiral carbons, including a ketal one, in the cyclopentane ring are assigned using quantum NMR calculations and DP4+ probability. The plausible molecular mechanism for di-isatropolone C formation is proposed, in which complex dehydrogenative C-C bond coupling may have happened to connect the two isatropolone C monomers. Like isatropolone C, di-isatropolone C shows the biological activity of inducing autophagy in HepG2 cells.
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Affiliation(s)
| | | | | | | | | | - Bingya Jiang
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (J.F.); (X.L.); (M.Z.); (J.L.); (S.L.)
| | - Linzhuan Wu
- CAMS Key Laboratory of Synthetic Biology for Drug Innovation, NHC Key Laboratory of Biotechnology for Microbial Drugs, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China; (J.F.); (X.L.); (M.Z.); (J.L.); (S.L.)
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3
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Schwitalla JW, Le NTH, Um S, Schalk F, Brönstrup M, Baunach M, Beemelmanns C. Heterologous expression of the cryptic mdk gene cluster and structural revision of maduralactomycin A. RSC Adv 2023; 13:34136-34144. [PMID: 38019997 PMCID: PMC10663993 DOI: 10.1039/d3ra05931f] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 11/06/2023] [Indexed: 12/01/2023] Open
Abstract
After conducting an in silico analysis of the cryptic mdk cluster region and performing transcriptomic studies, an integrative Streptomyces BAC Vector containing the mdk gene sequence was constructed. The heterologous expression of the mdk cluster in Streptomyces albus J1074 resulted in the production of the angucyclic product, seongomycin, which allowed for the assesment of its antibacterial, antiproliferative, and antiviral activities. Heterologous production was further confirmed by targeted knock-out experiments involving key regulators of the biosynthetic pathways. We were further able to revise the core structure of maduralactomycin A, using a computational approach.
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Affiliation(s)
- Jan W Schwitalla
- Chemical Biology of Microbe-Host Interactions, Hans-Knöll Institute (HKI) Beutenbergstraße 11a 07745 Jena Germany
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) Campus E8 66123 Saarbrücken Germany
| | - Ngoc-Thao-Hien Le
- Department of Pharmaceutical Sciences, Natural Products and Food Research and Analysis (NatuRA), University of Antwerp Universiteitsplein 1 B-2610 Antwerp Belgium
| | - Soohyun Um
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University Incheon 21983 South Korea
| | - Felix Schalk
- Chemical Biology of Microbe-Host Interactions, Hans-Knöll Institute (HKI) Beutenbergstraße 11a 07745 Jena Germany
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research Inhoffenstrasse 7 D-38124 Braunschweig Germany
| | - Martin Baunach
- Institute of Pharmaceutical Biology, University of Bonn Nussallee 6 53115 Bonn Germany
| | - Christine Beemelmanns
- Chemical Biology of Microbe-Host Interactions, Hans-Knöll Institute (HKI) Beutenbergstraße 11a 07745 Jena Germany
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI) Campus E8 66123 Saarbrücken Germany
- Saarland University 66123 Saarbrücken Germany
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4
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Hou A, Dickschat JS. Labelling studies in the biosynthesis of polyketides and non-ribosomal peptides. Nat Prod Rep 2023; 40:470-499. [PMID: 36484402 DOI: 10.1039/d2np00071g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Covering: 2015 to 2022In this review, we discuss the recent advances in the use of isotopically labelled compounds to investigate the biosynthesis of polyketides, non-ribosomally synthesised peptides, and their hybrids. Also, we highlight the use of isotopes in the elucidation of their structures and investigation of enzyme mechanisms. The biosynthetic pathways of selected examples are presented in detail to reveal the principles of the discussed labelling experiments. The presented examples demonstrate that the application of isotopically labelled compounds is still the state of the art and can provide valuable information for the biosynthesis of natural products.
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Affiliation(s)
- Anwei Hou
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, West 7th Avenue No. 32, 300308 Tianjin, China.,Institute of Microbiology, Jiangxi Academy of Sciences, Changdong Road No. 7777, 330096 Nanchang, China
| | - Jeroen S Dickschat
- Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Straße 1, 53121 Bonn, Germany.
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5
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Li L, Zhang M, Li S, Jiang B, Zhang J, Yu L, Liu H, Wu L. Isatropolone/isarubrolone C m from Streptomyces with biological activity of inducing incomplete autophagy. J Antibiot (Tokyo) 2022; 75:702-708. [PMID: 36224376 DOI: 10.1038/s41429-022-00575-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 09/17/2022] [Accepted: 09/28/2022] [Indexed: 11/09/2022]
Abstract
Isatropolones/isarubrolones are Streptomyces secondary metabolites featuring a tropolone ring in the pentacyclic scaffolds of these molecules. They are able to induce complete autophagy in human HepG2 cells. Here, methyl isatropolones (1-2) and isarubrolone (3) are identified from Streptomyces CPCC 204095. They all have a methyl tropolone ring in the pentacyclic scaffold of these molecules resolved by MS and NMR spectra. Biological activity assay indicates that isatropolone Cm (1) and isarubrolone Cm (3) induce incomplete autophagy in human HepG2 cells.
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Affiliation(s)
- Linli Li
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
- Department of Clinical Pharmacy, The Third Hospital of Hebei Medical University, 050051, Shijiazhuang, People's Republic of China
| | - Miaoqing Zhang
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Shufen Li
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China.
| | - Bingya Jiang
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Jingpu Zhang
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Liyan Yu
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Hongyu Liu
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China
| | - Linzhuan Wu
- NHC Key Laboratory of Biotechnology of Antibiotics, CAMS Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, 100050, Beijing, People's Republic of China.
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6
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Xu Y, Han H, Jie Liu Q, Zhao Y, Zhang M, Jiao RH, Zhang B, Ge HM. Salinopyridins A and B, two novel polyethers with a unique pyridine moiety from Streptomyces sp. NA4227. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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7
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Liu W, Dai Y, Shen G. The crystal structure of 3-(2-bromophenyl)-1,5-di- p-tolylpentane-1,5-dione, C 25H 23BrO 2. Z KRIST-NEW CRYST ST 2022. [DOI: 10.1515/ncrs-2022-0250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C25H23BrO2, monoclinic, P21/c (no. 14), a = 9.6229(7) Å, b = 21.7953(16) Å, c = 10.9104(6) Å, β = 109.330(7)°, V = 2159.3(3) Å3, Z = 4, R
gt
(F) = 0.0499, wR
ref
(F
2) = 0.1385, T = 293 K.
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Affiliation(s)
- Wanxing Liu
- The Non-Public Enterprise Service Center of Liaocheng , School of Chemistry and Chemical Engineering Liaocheng University , Liaocheng 252000 , Shandong , China
| | - Yifan Dai
- School of Chemistry and Chemical Engineering Liaocheng University , Liaocheng 252000 , Shandong , China
| | - Guodong Shen
- School of Chemistry and Chemical Engineering Liaocheng University , Liaocheng 252000 , Shandong , China
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8
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Aniebok V, Shingare RD, Wei‐Lee H, Johnstone TC, MacMillan JB. Biomimetic Total Synthesis and Investigation of the Non-Enzymatic Chemistry of Oxazinin A. Angew Chem Int Ed Engl 2022; 61:e202208029. [PMID: 35881566 PMCID: PMC9479274 DOI: 10.1002/anie.202208029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Indexed: 11/07/2022]
Abstract
We report the first total synthesis of an antimycobacterial natural product oxazinin A that takes advantage of a multi-component cascade reaction of anthranilic acid and a precursor polyketide containing an aldehyde. The route utilized for the synthesis of the pseudodimeric oxazinin A validates a previously proposed biosynthetic mechanism, invoking a non-enzymatic pathway to the complex molecule. We found a 76 : 10 : 9 : 5 ratio of oxazinin diastereomers from the synthetic cascade, which is an identical match to that found in the fermentation media from the fungus Eurotiomycetes 110162. Further investigation of the non-enzymatic formation of oxazinin A using 1 H-15 N HMBC NMR spectroscopy allowed for a plausible determination of the stepwise mechanism. The developed route is highly amenable for the synthesis of diverse sets of analogs around the oxazinin scaffold to study structure-activity relationships (SAR).
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Affiliation(s)
- Victor Aniebok
- Department of Chemistry and BiochemistryUC Santa CruzSanta CruzCA 95064USA
| | - Rahul D. Shingare
- Department of Chemistry and BiochemistryUC Santa CruzSanta CruzCA 95064USA
| | - Hsiau Wei‐Lee
- Department of Chemistry and BiochemistryUC Santa CruzSanta CruzCA 95064USA
| | | | - John B. MacMillan
- Department of Chemistry and BiochemistryUC Santa CruzSanta CruzCA 95064USA
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9
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[4 + 3] Cycloaddition of ketenimines with furocarbenoids: Divergent and efficient synthesis of fused cycloheptatriene and tropone scaffolds. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Bouthillette LM, Aniebok V, Colosimo DA, Brumley D, MacMillan JB. Nonenzymatic Reactions in Natural Product Formation. Chem Rev 2022; 122:14815-14841. [PMID: 36006409 DOI: 10.1021/acs.chemrev.2c00306] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Biosynthetic mechanisms of natural products primarily depend on systems of protein catalysts. However, within the field of biosynthesis, there are cases in which the inherent chemical reactivity of metabolic intermediates and substrates evades the involvement of enzymes. These reactions are difficult to characterize based on their reactivity and occlusion within the milieu of the cellular environment. As we continue to build a strong foundation for how microbes and higher organisms produce natural products, therein lies a need for understanding how protein independent or nonenzymatic biosynthetic steps can occur. We have classified such reactions into four categories: intramolecular, multicomponent, tailoring, and light-induced reactions. Intramolecular reactions is one of the most well studied in the context of biomimetic synthesis, consisting of cyclizations and cycloadditions due to the innate reactivity of the intermediates. There are two subclasses that make up multicomponent reactions, one being homologous multicomponent reactions which results in dimeric and pseudodimeric natural products, and the other being heterologous multicomponent reactions, where two or more precursors from independent biosynthetic pathways undergo a variety of reactions to produce the mature natural product. The third type of reaction discussed are tailoring reactions, where postmodifications occur on the natural products after the biosynthetic machinery is completed. The last category consists of light-induced reactions involving ecologically relevant UV light rather than high intensity UV irradiation that is traditionally used in synthetic chemistry. This review will cover recent nonenzymatic biosynthetic mechanisms and include sources for those reviewed previously.
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Affiliation(s)
- Leah M Bouthillette
- Deparment of Chemistry and Biochemistry, University of California, Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States
| | - Victor Aniebok
- Deparment of Chemistry and Biochemistry, University of California, Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States
| | - Dominic A Colosimo
- Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390 United States
| | - David Brumley
- Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390 United States
| | - John B MacMillan
- Deparment of Chemistry and Biochemistry, University of California, Santa Cruz, 1156 High Street, Santa Cruz, California 95064, United States.,Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390 United States
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11
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Aniebok V, Shingare R, Wei-Lee H, Johnstone T, MacMillan J. Biomimetic Total Synthesis and Investigation of the Non‑Enzymatic Chemistry of Oxazinin A. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Victor Aniebok
- University of California Santa Cruz Chemistry and Biochemistry UNITED STATES
| | - Rahul Shingare
- University of California Santa Cruz Chemistry and Biochemistry UNITED STATES
| | - Hsiau Wei-Lee
- University of California Santa Cruz Chemistry and Biochemistry UNITED STATES
| | - Timothy Johnstone
- University of California Santa Cruz Chemistry and Biochemistry UNITED STATES
| | - John MacMillan
- University of California Santa Cruz Chemistry and Biochemistry 1156 High St. 95064 Santa Cruz UNITED STATES
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12
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Yan Y, Yu Z, Zhong W, Hou X, Tao Q, Cao M, Wang L, Cai X, Rao Y, Huang SX. Characterization of Multifunctional and Non-stereoselective Oxidoreductase RubE7/IstO, Expanding the Functional Diversity of the Flavoenzyme Superfamily. Angew Chem Int Ed Engl 2022; 61:e202200189. [PMID: 35191152 DOI: 10.1002/anie.202200189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Indexed: 12/23/2022]
Abstract
Flavin-dependent enzymes enable a broad range of redox transformations and generally act as monofunctional and stereoselective catalysts. Herein, we report the investigation of a multifunctional and non-stereoselective FMN-dependent oxidoreductase RubE7 from the rubrolone biosynthetic pathway. Our study outlines a single RubE7-catalysed sequential reduction of three spatially distinct bonds in a tropolone ring and a reversible double-bond reduction and dehydrogenation. The crystal structure of IstO (a RubE7 homologue) with 2.0 Å resolution reveals the location of the active site at the interface of two monomers, and the size of active site is large enough to permit both flipping and free rotation of the substrate, resulting in multiple nonselective reduction reactions. Molecular docking and site mutation studies demonstrate that His106 is oriented towards the substrate and is important for the reverse dehydrogenation reaction.
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Affiliation(s)
- Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Wei Zhong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China.,University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaodong Hou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Qiaoqiao Tao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Minhang Cao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
| | - Xiaofeng Cai
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yijian Rao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, China
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13
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Liu J, Liu X, Fu J, Jiang B, Li S, Wu L. Dihydroisatropolone C from Streptomyces and Its Implication in Tropolone-Ring Construction for Isatropolone Biosynthesis. Molecules 2022; 27:molecules27092882. [PMID: 35566231 PMCID: PMC9099902 DOI: 10.3390/molecules27092882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/28/2022] [Accepted: 04/28/2022] [Indexed: 02/01/2023] Open
Abstract
Isatropolones/isarubrolones are actinomycete secondary metabolites featuring a tropolone-ring in their structures. From the isatropolone/isarubrolone producer Streptomyces sp. CPCC 204095, 7,12-dihydroisatropolone C (H2ITC) is discovered and identified as a mixture of two interchangeable diastereomers differing in the C-6 configuration. As a major metabolite in the mycelial growth period of Streptomyces sp. CPCC 204095, H2ITC can be oxidized spontaneously to isatropolone C (ITC), suggesting H2ITC is the physiological precursor of ITC. Characterization of H2ITC makes us propose dihydrotropolone-ring construction in the biosynthesis of isatropolones.
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Wang L, Linares-Otoya V, Liu Y, Mettal U, Marner M, Armas-Mantilla L, Willbold S, Kurtán T, Linares-Otoya L, Schäberle TF. Discovery and Biosynthesis of Antimicrobial Phenethylamine Alkaloids from the Marine Flavobacterium Tenacibaculum discolor sv11. JOURNAL OF NATURAL PRODUCTS 2022; 85:1039-1051. [PMID: 35416664 DOI: 10.1021/acs.jnatprod.1c01173] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The bacterial genus Tenacibaculum has been associated with various ecological roles in marine environments. Members of this genus can act, for example, as pathogens, predators, or episymbionts. However, natural products produced by these bacteria are still unknown. In the present work, we investigated a Tenacibaculum strain for the production of antimicrobial metabolites. Six new phenethylamine (PEA)-containing alkaloids, discolins A and B (1 and 2), dispyridine (3), dispyrrolopyridine A and B (4 and 5), and dispyrrole (6), were isolated from media produced by the predatory bacterium Tenacibaculum discolor sv11. Chemical structures were elucidated by analysis of spectroscopic data. Alkaloids 4 and 5 exhibited strong activity against Gram-positive Bacillus subtilis DSM10, Mycobacterium smegmatis ATCC607, Listeria monocytogenes DSM20600, and Staphylococcus aureus ATCC25923, with minimum inhibitory concentration (MIC) values ranging from 0.5 to 4 μg/mL, and moderate activity against Candida albicans FH2173 and Aspergillus flavus ATCC9170. Compound 6 displayed moderate antibacterial activities against Gram-positive bacteria. Dispyrrolopyridine A (4) was active against efflux pump deficient Escherichia coli ATCC25922 ΔtolC, with an MIC value of 8 μg/mL, as well as against Caenorhabditis elegans N2 with an MIC value of 32 μg/mL. Other compounds were inactive against these microorganisms. The biosynthetic route toward discolins A and B (1 and 2) was investigated using in vivo and in vitro experiments. It comprises an enzymatic decarboxylation of phenylalanine to PEA catalyzed by DisA, followed by a nonenzymatic condensation to form the central imidazolium ring. This spontaneous formation of the imidazolium core was verified by means of a synthetic one-pot reaction using the respective building blocks. Six additional strains belonging to three Tenacibaculum species were able to produce discolins, and several DisA analogues were identified in various marine flavobacterial genera, suggesting the widespread presence of PEA-derived compounds in marine ecosystems.
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Affiliation(s)
- Lei Wang
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Branch for Bioresources, 35392 Giessen, Germany
| | - Virginia Linares-Otoya
- Department of Pharmacology, Faculty of Pharmacy and Biochemistry, National University of Trujillo, 13011 Trujillo, Peru
- Research Centre for Sustainable Development Uku Pacha, 13011 Trujillo, Peru
| | - Yang Liu
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Branch for Bioresources, 35392 Giessen, Germany
| | - Ute Mettal
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Branch for Bioresources, 35392 Giessen, Germany
| | - Michael Marner
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Branch for Bioresources, 35392 Giessen, Germany
| | - Lizbeth Armas-Mantilla
- Department of Pharmacology, Faculty of Pharmacy and Biochemistry, National University of Trujillo, 13011 Trujillo, Peru
- Research Centre for Sustainable Development Uku Pacha, 13011 Trujillo, Peru
| | - Sabine Willbold
- Central Institute for Engineering, Electronics and Analytics, Analytics, Forschungszentrum Juelich GmbH, 52425 Juelich, Germany
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen, H-4002 Debrecen, Hungary
| | - Luis Linares-Otoya
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Branch for Bioresources, 35392 Giessen, Germany
- Department of Pharmacology, Faculty of Pharmacy and Biochemistry, National University of Trujillo, 13011 Trujillo, Peru
| | - Till F Schäberle
- Institute for Insect Biotechnology, Justus-Liebig-University Giessen, 35392 Giessen, Germany
- Fraunhofer Institute for Molecular Biology and Applied Ecology, Branch for Bioresources, 35392 Giessen, Germany
- German Center for Infection Research, Partner Site Giessen-Marburg-Langen, 35392 Giessen, Germany
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15
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Yan Y, Yu Z, Zhong W, Hou X, Tao Q, Cao M, Wang L, Cai X, Rao Y, Huang S. Characterization of Multifunctional and Non‐stereoselective Oxidoreductase RubE7/IstO, Expanding the Functional Diversity of the Flavoenzyme Superfamily. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202200189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
| | - Wei Zhong
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
- University of the Chinese Academy of Sciences Beijing 100049 China
| | - Xiaodong Hou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Wuxi 214122 China
| | - Qiaoqiao Tao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of Pharmacy Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Minhang Cao
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
| | - Xiaofeng Cai
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of Pharmacy Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China
| | - Yijian Rao
- Key Laboratory of Carbohydrate Chemistry and Biotechnology Ministry of Education School of Biotechnology Jiangnan University Wuxi 214122 China
| | - Sheng‐Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China CAS Center for Excellence in Molecular Plant Sciences Kunming Institute of Botany Chinese Academy of Sciences Kunming 650201 China
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16
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Hashem HE, Nath A, Kumer A. Synthesis, molecular docking, molecular dynamic, quantum calculation, and antibacterial activity of new Schiff base-metal complexes. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131915] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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17
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Moureu S, Caradec T, Trivelli X, Drobecq H, Beury D, Bouquet P, Caboche S, Desmecht E, Maurier F, Muharram G, Villemagne B, Herledan A, Hot D, Willand N, Hartkoorn RC. Rubrolone production by Dactylosporangium vinaceum: biosynthesis, modulation and possible biological function. Appl Microbiol Biotechnol 2021; 105:5541-5551. [PMID: 34189614 DOI: 10.1007/s00253-021-11404-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 06/03/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
Rare actinomycetes are likely treasure troves for bioactive natural products, and it is therefore important that we enrich our understanding of biosynthetic potential of these relatively understudied bacteria. Dactylosporangium are a genus of such rare Actinobacteria that are known to produce a number of important antibacterial compounds, but for which there are still no fully assembled reference genomes, and where the extent of encoded biosynthetic capacity is not defined. Dactylosporangium vinaceum (NRRL B-16297) is known to readily produce a deep wine red-coloured diffusible pigment of unknown origin, and it was decided to define the chemical identity of this natural product pigment, and in parallel use whole genome sequencing and transcriptional analysis to lay a foundation for understanding the biosynthetic capacity of these bacteria. Results show that the produced pigment is made of various rubrolone conjugates, the spontaneous product of the reactive pre-rubrolone, produced by the bacterium. Genome and transcriptome analysis identified the highly expressed biosynthetic gene cluster (BGC) for pre-rubrolone. Further analysis of the fully assembled genome found it to carry 24 additional BGCs, of which the majority were poorly transcribed, confirming the encoded capacity of this bacterium to produce natural products but also illustrating the main bottleneck to exploiting this capacity. Finally, analysis of the potential environmental role of pre-rubrolone found it to react with a number of amine containing antibiotics, antimicrobial peptides and siderophores pointing to its potential role as a "minesweeper" of xenobiotic molecules in the bacterial environment. KEY POINTS: • D. vinaceum encodes many BGC, but the majority are transcriptionally silent. • Chemical screening identifies molecules that modulate rubrolone production. • Pre-rubrolone is efficient at binding and inactivating many natural antibiotics.
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Affiliation(s)
- Sophie Moureu
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France
| | - Thibault Caradec
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France
| | - Xavier Trivelli
- Univ. Lille, CNRS, INRA, Centrale Lille, Univ. Artois, FR 2638 - IMEC - Institut Michel-Eugène Chevreul, 59000, Lille, France
| | - Hervé Drobecq
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France
| | - Delphine Beury
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France.,Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, UMR2014 - US41 - PLBS-Plateformes Lilloises de Biologie & Santé, F-59000, Lille, France
| | - Peggy Bouquet
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France
| | - Segolene Caboche
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France.,Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, UMR2014 - US41 - PLBS-Plateformes Lilloises de Biologie & Santé, F-59000, Lille, France
| | - Eva Desmecht
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France
| | - Florence Maurier
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France.,Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, UMR2014 - US41 - PLBS-Plateformes Lilloises de Biologie & Santé, F-59000, Lille, France
| | - Ghaffar Muharram
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France
| | - Baptiste Villemagne
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177 - Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - Adrien Herledan
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177 - Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - David Hot
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France.,Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, UMR2014 - US41 - PLBS-Plateformes Lilloises de Biologie & Santé, F-59000, Lille, France
| | - Nicolas Willand
- Univ. Lille, Inserm, Institut Pasteur de Lille, U1177 - Drugs and Molecules for Living Systems, F-59000, Lille, France
| | - Ruben Christiaan Hartkoorn
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur Lille, U1019 - UMR 9017 - CIIL - Center for Infection and Immunity of Lille, F-59000 Lille, France.
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18
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Li X, Wu P, Li H, Xue J, Xu H, Wei X. Antibacterial and Cytotoxic Phenyltetracenoid Polyketides from Streptomyces morookaense. JOURNAL OF NATURAL PRODUCTS 2021; 84:1806-1815. [PMID: 34081476 DOI: 10.1021/acs.jnatprod.1c00208] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Formicapyridine-type racemates, streptovertidines A (1) and B (2), a 7,24-seco-fasamycin, streptovertidione (3), and the fasamycin-type streptovertimycins I-T (4-15), together with 13 known fasamycin congeners (16-28), were isolated from soil-derived Streptomyces morookaense SC1169. Their structures were elucidated by extensive spectroscopic analysis and theoretical computations of ECD spectra. The fasamycin-type compounds 5, 8-12, 14, and 15 exhibited activity against the drug-resistant bacteria MRSA and VRE (MIC: 1.25-10.0 μg/mL). All isolates, except 3, 4, 10, and 24, displayed cytotoxicity against at least one of the human carcinoma A549, HeLa, HepG2, and MCF-7 cells (IC50 < 10.0 μM), of which some were also cytotoxic to the noncancerous Vero cells. Taken together, the activity data demonstrated that the fasamycin-type compounds were more selective to the tested bacteria over the mammalian cells. Structure-activity relationship analysis suggested that chlorination at C-2 in antibacterial fasamycin-type compounds improves the activity and selectivity to the bacteria. Theoretical simulations of reaction paths and chemical reactions for conversion of 3 to 1 were carried out and supported that the pyridine ring formation in formicapyridines proceeds nonenzymatically via 1,5-dicarbonyl condensation with ammonia.
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Affiliation(s)
- Xiaoxia 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
- School of Life Sciences, University of Chinese Academy of Sciences, Yuquanlu 19A, Beijing 100049, 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
| | - 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
| | - 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
| | - Hanhong Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources and Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Guangzhou 510642, 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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19
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Pradhan S, Bhujel D, Gurung B, Sharma D, Basel S, Rasaily S, Thapa S, Borthakur S, Ling WL, Saikia L, Reiss P, Pariyar A, Tamang S. Stable lead-halide perovskite quantum dots as efficient visible light photocatalysts for organic transformations. NANOSCALE ADVANCES 2021; 3:1464-1472. [PMID: 36132853 PMCID: PMC9419111 DOI: 10.1039/d0na00992j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 01/16/2021] [Indexed: 05/28/2023]
Abstract
Lead halide perovskite (LHP) based colloidal quantum dots (CQDs) have tremendous potential for photocatalysis due to their exceptional optical properties. However, their applicability in catalysis is restricted due to poor chemical stability and low recyclability. We report halide-passivated, monodisperse CsPbBr3CQDs as a stable and efficient visible-light photocatalyst for organic transformations. We demonstrate oxidative aromatization of a wide range of heterocyclic substrates including examples which are poor hydrogen transfer (HAT) reagents. Two to five-fold higher rate kinetics were observed for reactions catalyzed by CsPbBr3CQDs in comparison with bulk-type CsPbBr3 (PNCs) or conventionally synthesized CsPbBr3CQDs and other metal organic dyes (rhodamine 6G and [Ru(bpy)3]2+). Furthermore, these CQDs exhibit improved air-tolerance and photostability and in turn show a higher turnover number (TON) of 200, compared to conventionally prepared CQDs (TON = 166) and state-of-the-art bulk-type perovskite-based catalyst (TON = 177). Our study paves the way for the practical applicability of energy-level tunable, size-controlled LHP CQDs as efficient photocatalysts in organic synthesis.
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Affiliation(s)
- Sajan Pradhan
- Department of Chemistry, School of Physical Sciences, Sikkim University Sikkim 737102 India
| | - Deshaj Bhujel
- Department of Chemistry, School of Physical Sciences, Sikkim University Sikkim 737102 India
| | - Bikram Gurung
- Department of Chemistry, School of Physical Sciences, Sikkim University Sikkim 737102 India
| | - Debesh Sharma
- Department of Chemistry, School of Physical Sciences, Sikkim University Sikkim 737102 India
| | - Siddhant Basel
- Department of Chemistry, School of Physical Sciences, Sikkim University Sikkim 737102 India
| | - Sagarmani Rasaily
- Department of Chemistry, School of Physical Sciences, Sikkim University Sikkim 737102 India
| | - Surakcha Thapa
- Department of Chemistry, School of Physical Sciences, Sikkim University Sikkim 737102 India
| | - Sukanya Borthakur
- Department of Material Science, North East Institute of Science and Technology (NEIST) Assam 785006 India
| | - Wai Li Ling
- Univ. Grenoble Alpes, CEA, CNRS, IRIG/SyMMES/STEP 38000 Grenoble France
| | - Lakshi Saikia
- Department of Material Science, North East Institute of Science and Technology (NEIST) Assam 785006 India
| | - Peter Reiss
- Univ. Grenoble Alpes, CEA, CNRS, IRIG/SyMMES/STEP 38000 Grenoble France
| | - Anand Pariyar
- Department of Chemistry, School of Physical Sciences, Sikkim University Sikkim 737102 India
| | - Sudarsan Tamang
- Department of Chemistry, School of Physical Sciences, Sikkim University Sikkim 737102 India
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20
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Frankowski S, Kowalska J, Albrecht A. Pyridylacetic acids and related systems as alkylheteroarene surrogates in asymmetric decarboxylative Michael addition. Chem Commun (Camb) 2021; 57:3387-3390. [PMID: 33683224 DOI: 10.1039/d0cc08182e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this manuscript, a novel method for the preparation of enantiomerically enriched pyridine derivatives has been described. It is based on the utilization of readily available 2-pyridylacetic acids as valuable synthons for the introduction of a pyridine ring in an asymmetric fashion. They have been used as pronucleophiles in asymmetric decarboxylative Michael addition to α,β-unsaturated aldehydes. The synthesis based on iminium activation using a chiral aminocatalyst that controlled the stereochemical outcome of the transformation has been successfully accomplished.
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Affiliation(s)
- Sebastian Frankowski
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland.
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21
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Yu M, Luo J, Luo D, He Q, Yan Y, Ji X, Huang SX. Discovery and heterologous production of sarubicins and quinazolinone C-glycosides with protecting activity for cardiomyocytes. Org Chem Front 2021. [DOI: 10.1039/d1qo00470k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Glycosylated natural products and their derivatives are important pharmaceutical agents.
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Affiliation(s)
- Mingming Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
| | - Jianying Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
| | - Dan Luo
- College of Traditional Chinese Medicine
- Yunnan University of Traditional Chinese Medicine
- Kunming 650500
- China
| | - Qiang He
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
| | - Xu Ji
- Key Laboratory of Medicinal Chemistry for Natural Resource of Ministry of Education
- Yunnan University
- Kunming 650091
- China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China and Yunnan key Laboratory of Natural Medicinal Chemistry
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
- China
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22
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Characterization of a Novel Endophytic Actinomycete, Streptomyces physcomitrii sp. nov., and Its Biocontrol Potential Against Ralstonia solanacearum on Tomato. Microorganisms 2020; 8:microorganisms8122025. [PMID: 33352827 PMCID: PMC7765990 DOI: 10.3390/microorganisms8122025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/12/2020] [Accepted: 12/15/2020] [Indexed: 12/18/2022] Open
Abstract
Bacterial wilt of tomato is a destructive disease caused by Ralstonia solanacearum throughout the world. An endophytic actinomycete with antagonistic activity, designated strain LD120T, was isolated from moss (Physcomitrium sphaericum (Ludw) Fuernr). The biocontrol test demonstrated that co-inoculation by the isolate and the pathogen gave the greatest biocontrol efficiency of 63.6%. Strain LD120T had morphological characteristics and chemotaxonomic properties identical to those of members of the genus Streptomyces. The diamino acid present in the cell wall was LL-diaminopimelic acid. Arabinose, glucose, rhamnose, and ribose occured in whole cell hydrolysates. The menaquinones detected were MK-9(H4), MK-9(H6), MK-9(H8), and MK-9(H2). The polar lipid profile was found to contain diphosphatidylglycerol, phosphatidylethanolamine, and phosphatidylinositol. The major cellular fatty acids were found to be iso-C16:0, iso-C17:0, anteiso-C15:0, and C16:1 ω7c. The DNA G+C content of the draft genome sequence, consisting of 7.6 Mbp, was 73.1%. Analysis of the 16S rRNA gene sequence showed that strain LD120T belongs to the genus Streptomyces, with the highest sequence similarity to Streptomyces azureus NRRL B-2655T (98.97%), but phylogenetically clustered with Streptomyces anandii NRRL B-3590T (98.62%). Multilocus sequence analysis based on five other house-keeping genes (atpD, gyrB, rpoB, recA, and trpB) and the low level of DNA–DNA relatedness, as well as phenotypic differences, allowed strain LD120T to be differentiated from its closely related strains. Therefore, the strain was concluded to represent a novel species of the genus Streptomyces, for which the name Streptomycesphyscomitrii sp. nov. was proposed. The type strain was LD120T (=CCTCC AA 2018049T = DSM 110638T).
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Li H, Feng W, Li X, Kang X, Yan S, Chao M, Mo S, Sun W, Lu Y, Chen C, Wang J, Zhu H, Zhang Y. Terreuspyridine: An Unexpected Pyridine-Fused Meroterpenoid Alkaloid with a Tetracyclic 6/6/6/6 Skeleton from Aspergillus terreus. Org Lett 2020; 22:7041-7046. [PMID: 32841036 DOI: 10.1021/acs.orglett.0c02641] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Terreuspyridine (1), the first 3,5-demethylorsellinic acid (DMOA) derived meroterpenoid alkaloid, was isolated from the fungus Aspergillus terreus, which represents a new type of meroterpenoid possessing an unexpected tetracyclic 6/6/6/6 architecture. The structure of 1 with absolute configuration was determined by X-ray diffraction analysis. Biogenetically, it was proposed to be derived from the fusion of a DMOA-meroterpenoid and a glutamate. Terreuspyridine (1) exhibited moderate inhibitory activity against the BChE with an IC50 value of 16.4 μM.
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Affiliation(s)
- Huaqiang Li
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Wenya Feng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiaoxin Li
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xin Kang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Shan Yan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Menghang Chao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Shuyuan Mo
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Weiguang Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yuanyuan Lu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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24
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Yan Y, Yang J, Wang L, Xu D, Yu Z, Guo X, Horsman GP, Lin S, Tao M, Huang SX. Biosynthetic access to the rare antiarose sugar via an unusual reductase-epimerase. Chem Sci 2020; 11:3959-3964. [PMID: 34122866 PMCID: PMC8152690 DOI: 10.1039/c9sc05766h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Rubrolones, isatropolones, and rubterolones are recently isolated glycosylated tropolonids with notable biological activity. They share similar aglycone skeletons but differ in their sugar moieties, and rubterolones in particular have a rare deoxysugar antiarose of unknown biosynthetic provenance. During our previously reported biosynthetic elucidation of the tropolone ring and pyridine moiety, gene inactivation experiments revealed that RubS3 is involved in sugar moiety biosynthesis. Here we report the in vitro characterization of RubS3 as a bifunctional reductase/epimerase catalyzing the formation of TDP-d-antiarose by epimerization at C3 and reduction at C4 of the key intermediate TDP-4-keto-6-deoxy-d-glucose. These new findings not only explain the biosynthetic pathway of deoxysugars in rubrolone-like natural products, but also introduce RubS3 as a new family of reductase/epimerase enzymes with potential to supply the rare antiarose unit for expanding the chemical space of glycosylated natural products. Rubrolones, isarubrolones, and rubterolones are recently isolated glycosylated tropolonids with notable biological activity.![]()
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Affiliation(s)
- Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Dongdong Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Zhiyin Yu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Xiaowei Guo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
| | - Geoff P Horsman
- Department of Chemistry & Biochemistry, Wilfrid Laurier University Waterloo ON N2L 3C5 Canada
| | - Shuangjun Lin
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Meifeng Tao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, CAS Center for Excellence in Molecular Plant Sciences, Kunming Institute of Botany, Chinese Academy of Sciences Kunming 650201 China
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25
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Damilano G, Binnemans K, Dehaen W. Synthesis of Guerbet ionic liquids and extractants as β-branched biosourceable hydrophobes. Org Biomol Chem 2019; 17:9778-9791. [PMID: 31701105 DOI: 10.1039/c9ob02237f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study investigates the synthesis of β-branched amines and β-branched quaternary ammonium chloride ionic liquids as novel extractants. The synthesis methodology was tailored to facilitate the reaction scale-up and the use of biorenewable starting materials. The developed process is an overall green, easy and straightforward synthesis of β-branched amines, and ammonium salts, starting from linear aldehydes. In order to evaluate the potential of the synthesised materials in applications, the rheology, density, thermal stability, chemical stability, phase transitions, and mutual solubility with water of the novel extractants was studied.
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Affiliation(s)
- Giacomo Damilano
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F - P. O. Box 2404, B-3001 Leuven, Belgium.
| | - Koen Binnemans
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F - P. O. Box 2404, B-3001 Leuven, Belgium.
| | - Wim Dehaen
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F - P. O. Box 2404, B-3001 Leuven, Belgium.
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26
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An Alkylpyrazine Synthesis Mechanism Involving l-Threonine-3-Dehydrogenase Describes the Production of 2,5-Dimethylpyrazine and 2,3,5-Trimethylpyrazine by Bacillus subtilis. Appl Environ Microbiol 2019; 85:AEM.01807-19. [PMID: 31585995 DOI: 10.1128/aem.01807-19] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 09/30/2019] [Indexed: 12/31/2022] Open
Abstract
Alkylpyrazines are important contributors to the flavor of traditional fermented foods. Here, we studied the synthesis mechanisms of 2,5-dimethylpyrazine (2,5-DMP) and 2,3,5-trimethylpyrazine (TMP). Substrate addition, whole-cell catalysis, stable isotope tracing experiments, and gene manipulation revealed that l-threonine is the starting point involving l-threonine-3-dehydrogenase (TDH) and three uncatalyzed reactions to form 2,5-DMP. TDH catalyzes the oxidation of l-threonine. The product of this reaction is l-2-amino-acetoacetate, which is known to be unstable and can decarboxylate to form aminoacetone. It is proposed that aminoacetone spontaneously converts to 2,5-DMP in a pH-dependent reaction, via 3,6-dihydro-2,5-DMP. 2-Amino-3-ketobutyrate coenzyme A (CoA) ligase (KBL) catalyzes the cleavage of l-2-amino-acetoacetate, the product of TDH, into glycine and acetyl-CoA in the presence of CoA. Inactivation of KBL could improve the production of 2,5-DMP. Besides 2,5-DMP, TMP can also be generated by Bacillus subtilis 168 by using l-threonine and d-glucose as the substrates and TDH as the catalytic enzyme.IMPORTANCE Despite alkylpyrazines' contribution to flavor and their commercial value, the synthesis mechanisms of alkylpyrazines by microorganisms remain poorly understood. This study revealed the substrate, intermediates, and related enzymes for the synthesis of 2,5-dimethylpyrazine (2,5-DMP), which differ from the previous reports about the synthesis of 2,3,5,6-tetramethylpyrazine (TTMP). The synthesis mechanism described here can also explain the production of 2,3,5-trimethylpyrazine (TMP). The results provide insights into an alkylpyrazine's synthesis pathway involving l-threonine-3-dehydrogenase as the catalytic enzyme and l-threonine as the substrate.
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27
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Gao D, Zhou T, Da LT, Bruhn T, Guo LL, Chen YH, Xu J, Xu MJ. Characterization and Nonenzymatic Transformation of Three Types of Alkaloids from Streptomyces albogriseolus MGR072 and Discovery of Inhibitors of Indoleamine 2,3-Dioxygenase. Org Lett 2019; 21:8577-8581. [DOI: 10.1021/acs.orglett.9b03149] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Du Gao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Centre for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Ting Zhou
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Centre for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Lin-Tai Da
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Centre for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Torsten Bruhn
- German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589 Berlin, Germany
| | - Li-Li Guo
- State Key Laboratory of Molecular Developmental Biology, Chinese Academy of Sciences Center for Excellence in Biomacromolecules, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yu-Hang Chen
- State Key Laboratory of Molecular Developmental Biology, Chinese Academy of Sciences Center for Excellence in Biomacromolecules, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jun Xu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Min-Juan Xu
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Centre for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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28
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Oh J, Kim NY, Chen H, Palm NW, Crawford JM. An Ugi-like Biosynthetic Pathway Encodes Bombesin Receptor Subtype-3 Agonists. J Am Chem Soc 2019; 141:16271-16278. [PMID: 31537063 DOI: 10.1021/jacs.9b04183] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Isocyanide functional groups can be found in a variety of natural products. Rhabduscin is one such isocyanide-functionalized immunosuppressant produced in Xenorhabdus and Photorhabdus gammaproteobacterial pathogens, and deletion of its biosynthetic gene cluster inhibits virulence in an invertebrate animal infection model. Here, we characterized the first "opine-glycopeptide" class of natural products termed rhabdoplanins, and strikingly, these molecules are spontaneously produced from rhabduscin via an unprecedented multicomponent "Ugi-like" reaction sequence in nature. The rhabdoplanins also represent new lead G protein-coupled receptor (GPCR) agonists, stimulating the bombesin receptor subtype-3 (BB3) GPCR.
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Affiliation(s)
- Joonseok Oh
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , United States.,Chemical Biology Institute , Yale University , West Haven , Connecticut 06516 , United States
| | - Nam Y Kim
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , United States.,Chemical Biology Institute , Yale University , West Haven , Connecticut 06516 , United States
| | - Haiwei Chen
- Department of Immunobiology , Yale School of Medicine , New Haven , Connecticut 06520 , United States
| | - Noah W Palm
- Department of Immunobiology , Yale School of Medicine , New Haven , Connecticut 06520 , United States
| | - Jason M Crawford
- Department of Chemistry , Yale University , New Haven , Connecticut 06520 , United States.,Chemical Biology Institute , Yale University , West Haven , Connecticut 06516 , United States.,Department of Microbial Pathogenesis , Yale School of Medicine , New Haven , Connecticut 06536 , United States
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29
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Yan YM, Zhang HX, Liu H, Wang Y, Wu JB, Li YP, Cheng YX. (+/−)-Lucidumone, a COX-2 Inhibitory Caged Fungal Meroterpenoid from Ganoderma lucidum. Org Lett 2019; 21:8523-8527. [DOI: 10.1021/acs.orglett.9b02840] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yong-Ming Yan
- School of Pharmaceutical Sciences, Health Science Center, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P.R. China
| | - Hao-Xing Zhang
- School of Pharmaceutical Sciences, Health Science Center, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P.R. China
| | - Huan Liu
- School of Pharmaceutical Sciences, Health Science Center, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P.R. China
| | - Yan Wang
- Center for Translation Medicine Research and Development, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, P.R. China
| | - Jing-Bo Wu
- School of Pharmaceutical Sciences, Health Science Center, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P.R. China
| | - Yan-Peng Li
- School of Pharmaceutical Sciences, Health Science Center, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P.R. China
| | - Yong-Xian Cheng
- School of Pharmaceutical Sciences, Health Science Center, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, P.R. China
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30
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Li L, Li S, Jiang B, Zhang M, Zhang J, Yang B, Li L, Yu L, Liu H, You X, Hu X, Wang Z, Li Y, Wu L. Isarubrolones Containing a Pyridooxazinium Unit from Streptomyces as Autophagy Activators. JOURNAL OF NATURAL PRODUCTS 2019; 82:1149-1154. [PMID: 31070914 DOI: 10.1021/acs.jnatprod.8b00857] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Isarubrolones are bioactive polycyclic tropoloalkaloids from Streptomyces. Three new isarubrolones (2-4), together with the known isarubrolone C (1) and isatropolones A (5) and C (6, 3( R)-hydroxyisatropolone A), were identified from Streptomyces sp. CPCC 204095. The structures of these compounds were determined using a combination of mass spectrometry, 1D and 2D NMR spectroscopy, and ECD. Compounds 3 and 4 feature a pyridooxazinium unit, which is rarely seen in natural products. Compound 6 could conjugate with amino acids or amines to expand the structural diversity of isarubrolones with a pentacyclic or hexacyclic core. Importantly, 1 and 3-6 were found to induce complete autophagy.
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Affiliation(s)
- Linli Li
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Shufen Li
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Bingya Jiang
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Miaoqing Zhang
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Jingpu Zhang
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Beibei Yang
- Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Li Li
- Institute of Materia Medica , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Liyan Yu
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Hongyu Liu
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Xuefu You
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Xinxin Hu
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Zhen Wang
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Yuhuan Li
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
| | - Linzhuan Wu
- NHC Key Laboratory of Biotechnology of Antibiotics, Key Laboratory of Synthetic Biology for Drug Innovation, Institute of Medicinal Biotechnology , Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , People's Republic of China
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31
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Linares-Otoya L, Liu Y, Linares-Otoya V, Armas-Mantilla L, Crüsemann M, Ganoza-Yupanqui ML, Campos-Florian J, König GM, Schäberle TF. Biosynthetic Basis for Structural Diversity of Aminophenylpyrrole-Derived Alkaloids. ACS Chem Biol 2019; 14:176-181. [PMID: 30649848 DOI: 10.1021/acschembio.8b00993] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bacterial aminophenylpyrrole-derived alkaloids (APPAs) represent high value lead compounds. Pyrrolnitrin, which was developed into globally important fungicides, is the only reported APPA produced by Proteobacteria. Recently, various APPAs showing diverse bioactivities were discovered from Bacteroidetes. Here, a bioinformatics and phylogenetic approach enabled the elucidation of the biosynthesis of the highly diverse APPAs in Cytophagales bacteria and their chemical diversification strategy. The biosynthetic gene clusters were identified in producer strains, and the biosynthesis was experimentally validated by heterologous expression experiments in E. coli. First, one enzyme-dependent biosynthetic step yields the tryptophan-derived precursor 3-(2'-aminophenyl)-pyrrole. Second, a spontaneous Pictet-Spengler-like coupling reaction enables the bacterial producer strains to create a library of tricyclic alkaloids, since several aldehydes can be applied as substrates. The diversity of this natural products class is further enlarged by the catalytic action of a methyltransferase, which adds one or more methyl groups to the aminophenyl intermediate.
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Affiliation(s)
- Luis Linares-Otoya
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Yang Liu
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| | - Virginia Linares-Otoya
- Research Centre for Sustainable Development Uku Pacha, Trujillo, Peru
- Department of Pharmacology, Faculty of Pharmacy and Biochemistry, National University of Trujillo, Trujillo, Peru
| | - Lizbeth Armas-Mantilla
- Research Centre for Sustainable Development Uku Pacha, Trujillo, Peru
- Department of Pharmacology, Faculty of Pharmacy and Biochemistry, National University of Trujillo, Trujillo, Peru
| | - Max Crüsemann
- Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Mayar L. Ganoza-Yupanqui
- Department of Pharmacology, Faculty of Pharmacy and Biochemistry, National University of Trujillo, Trujillo, Peru
| | - Julio Campos-Florian
- Department of Pharmacology, Faculty of Pharmacy and Biochemistry, National University of Trujillo, Trujillo, Peru
| | - Gabriele M. König
- Institute for Pharmaceutical Biology, University of Bonn, Bonn, Germany
| | - Till F. Schäberle
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
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32
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Zhang Z, Cao P, Shang NN, Yang J, Wang L, Yan Y, Huang SX. Naphthomycin-derived macrolactams with two new carbon skeletons from endophytic Streptomyces. Org Chem Front 2019. [DOI: 10.1039/c8qo01107a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A cytotoxic ansamycin class of natural products with two new carbon skeletons was isolated and characterized from endophytic Streptomyces.
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Affiliation(s)
- Zhouxin Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Pei Cao
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Ning-Ning Shang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Jing Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Li Wang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Yijun Yan
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
| | - Sheng-Xiong Huang
- State Key Laboratory of Phytochemistry and Plant Resources in West China
- CAS Center for Excellence in Molecular Plant Sciences
- Kunming Institute of Botany
- Chinese Academy of Sciences
- Kunming 650204
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33
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Wang JP, Shu Y, Liu SX, Hu JT, Sun CT, Zhou H, Gan D, Cai XY, Pu W, Cai L, Ding ZT. Expanstines A–D: four unusual isoprenoid epoxycyclohexenones generated byPenicillium expansumYJ-15 fermentation and photopromotion. Org Chem Front 2019. [DOI: 10.1039/c9qo01076a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Expanstines A–D fromP. expansumYJ-15 were derived under UV and visible light from 4′-oxomacrophoin A (5) and its acetate (6), which plausibly underwent a rare intramolecular photoene reaction and a [2 + 2] Paternò–Büchi photoaddition respectively.
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34
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Han JJ, Zhang JZ, Zhu RX, Li Y, Qiao YN, Gao Y, Jin XY, Chen W, Zhou JC, Lou HX. Plagiochianins A and B, Two ent-2,3- seco-Aromadendrane Derivatives from the Liverwort Plagiochila duthiana. Org Lett 2018; 20:6550-6553. [PMID: 30289265 DOI: 10.1021/acs.orglett.8b02888] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two novel ent-aromadendrane derivatives, plagiochianin A (1), possessing an unprecedented 2,3:6,7-di- seco-6,8-cyclo-aromadendrane carbon scaffold conjugated with three cyclic acetals, and plagiochianin B (2), an exceptional pyridine type aromadendrane alkaloid, were isolated from the Chinese liverwort Plagiochila duthiana. Their structures were established by comprehensive spectroscopic analysis coupled with single-crystal X-ray diffraction and electronic circular dichroism calculations. A plausible biogenetic pathway of these two compounds is presented, and their acetylcholinesterase inhibitory activities are preliminarily tested using TLC-bioautographic assays.
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Affiliation(s)
- Jing-Jing Han
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences , Shandong University , No. 44 West Wenhua Road , Jinan 250012 , P. R. China
| | - Jiao-Zhen Zhang
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences , Shandong University , No. 44 West Wenhua Road , Jinan 250012 , P. R. China
| | - Rong-Xiu Zhu
- School of Chemistry and Chemical Engineering , Shandong University , Jinan 250010 , P. R. China
| | - Yi Li
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences , Shandong University , No. 44 West Wenhua Road , Jinan 250012 , P. R. China
| | - Ya-Nan Qiao
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences , Shandong University , No. 44 West Wenhua Road , Jinan 250012 , P. R. China
| | - Yun Gao
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences , Shandong University , No. 44 West Wenhua Road , Jinan 250012 , P. R. China
| | - Xue-Yang Jin
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences , Shandong University , No. 44 West Wenhua Road , Jinan 250012 , P. R. China
| | - Wang Chen
- Vitamin D Research Institute , Shanxi University of Technology , Hanzhong 723000 , P. R. China
| | - Jin-Chuan Zhou
- School of Pharmacy , Linyi University , Linyi 276000 , P. R. China
| | - Hong-Xiang Lou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences , Shandong University , No. 44 West Wenhua Road , Jinan 250012 , P. R. China
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35
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Zhang Z, He X, Wu G, Liu C, Lu C, Gu Q, Che Q, Zhu T, Zhang G, Li D. Aniline-Tetramic Acids from the Deep-Sea-Derived Fungus Cladosporium sphaerospermum L3P3 Cultured with the HDAC Inhibitor SAHA. JOURNAL OF NATURAL PRODUCTS 2018; 81:1651-1657. [PMID: 29985604 DOI: 10.1021/acs.jnatprod.8b00289] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Four new tetramic acids, cladosins H-K (1-4), and a related known compound, cladodionen (5), were isolated from the culture of the Mariana Trench (depth 6562 m) sediment-derived fungus Cladosporium sphaerospermum L3P3 treated with the histone deacetylase inhibitor SAHA (suberanilohydroxamic acid). Interestingly, compounds 1-5 existed as equilibrium E/ Z mixtures and 1-4 were the first cases of tetramic acids containing aniline moieties. Their structures including absolute configurations were elucidated through a combination of NMR, MS, and Mosher's method, together with the consideration of biogenetic origins. Incubation experiments of exogenous aniline and N-phenyloctanamide revealed that the aniline moiety in cladosins H-K (1-4) is probably derived from the degradation of SAHA, indicating that the well-known histone deacetylase inhibitor SAHA could be metabolized by L3P3 and provide aniline as a precursor for biotransformation of chemically reactive polyketides. The cytotoxicity of 1-5 was evaluated against the PC-3, MGC-803, SH-SY5Y, HCT-116, K562, and HL-60 cell lines, and compound 2 showed promising cytotoxicity against the HL-60 cell line with an IC50 value of 2.8 μM.
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Affiliation(s)
- Zhenzhen Zhang
- 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
| | - Xueqian He
- 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
| | - Guangwei Wu
- 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
| | - Congcong Liu
- 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
| | - Changjun Lu
- 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
| | - Qianqun Gu
- 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
| | - Qian Che
- 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
| | - Tianjiao Zhu
- 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
| | - Guojian Zhang
- 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
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology , Qingdao 266237 , People's Republic of China
| | - Dehai 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
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology , Qingdao 266237 , People's Republic of China
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36
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Guo H, Benndorf R, König S, Leichnitz D, Weigel C, Peschel G, Berthel P, Kaiser M, Steinbeck C, Werz O, Poulsen M, Beemelmanns C. Expanding the Rubterolone Family: Intrinsic Reactivity and Directed Diversification of PKS-derived Pyrans. Chemistry 2018; 24:11319-11324. [PMID: 29846024 DOI: 10.1002/chem.201802066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/26/2018] [Indexed: 12/20/2022]
Abstract
We characterized two key biosynthetic intermediates of the intriguing rubterolone family (tropolone alkaloids) that contain a highly reactive pyran moiety (in equilibrium with the hydrolyzed 1,5-dione form) and undergo spontaneous pyridine formation in the presence of primary amines. We exploited the intrinsic reactivity of the pyran moiety and isolated several new rubterolone derivatives, two of which contain a unique thiazolidine moiety. Three rubterolone derivatives were chemically modified with fluorescence and biotin tags using peptide coupling and click reaction. Overall, eight derivatives were fully characterized by HRMS/MS and 1D and 2D NMR spectroscopy and their antimicrobial, cytotoxic, anti-inflammatory and antiparasitic activities evaluated.
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Affiliation(s)
- Huijuan Guo
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - René Benndorf
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Stefanie König
- Institute of Pharmacy, Friedrich-Schiller-University Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Daniel Leichnitz
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Christiane Weigel
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Gundela Peschel
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Patrick Berthel
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Marcel Kaiser
- Swiss Tropical and Public Health Institute, Parasite Chemotherapy, Socinstraße 57, 4002, Basel, Switzerland.,University of Basel, Petersplatz 1, 4003, Basel, Switzerland
| | - Christoph Steinbeck
- Institute for Analytical Chemistry, Friedrich-Schiller-University Jena, Lessingstr. 8, 07743, Jena, Germany
| | - Oliver Werz
- Institute of Pharmacy, Friedrich-Schiller-University Jena, Philosophenweg 14, 07743, Jena, Germany
| | - Michael Poulsen
- Centre for Social Evolution, University of Copenhagen, 2100, Copenhagen East, Denmark
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research, and Infection Biology-Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
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37
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Zhang X, Wang TT, Xu QL, Xiong Y, Zhang L, Han H, Xu K, Guo WJ, Xu Q, Tan RX, Ge HM. Genome Mining and Comparative Biosynthesis of Meroterpenoids from Two Phylogenetically Distinct Fungi. Angew Chem Int Ed Engl 2018; 57:8184-8188. [DOI: 10.1002/anie.201804317] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 05/20/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Xuan Zhang
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Ting Ting Wang
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Qin Lan Xu
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Ying Xiong
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Li Zhang
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Hao Han
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Kuang Xu
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Wen Jie Guo
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Qiang Xu
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Ren Xiang Tan
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
- State Key Laboratory Cultivation Base for TCM Quality and EfficacyNanjing University of Chinese Medicine Nanjing 210023 China
| | - Hui Ming Ge
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
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38
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Zhang X, Wang TT, Xu QL, Xiong Y, Zhang L, Han H, Xu K, Guo WJ, Xu Q, Tan RX, Ge HM. Genome Mining and Comparative Biosynthesis of Meroterpenoids from Two Phylogenetically Distinct Fungi. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804317] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xuan Zhang
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Ting Ting Wang
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Qin Lan Xu
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Ying Xiong
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Li Zhang
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Hao Han
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Kuang Xu
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Wen Jie Guo
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Qiang Xu
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
| | - Ren Xiang Tan
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
- State Key Laboratory Cultivation Base for TCM Quality and EfficacyNanjing University of Chinese Medicine Nanjing 210023 China
| | - Hui Ming Ge
- State Key Laboratory of Pharmaceutical BiotechnologyInstitute of Functional BiomoleculesSchool of Life SciencesNanjing University Nanjing 210023 China
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39
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Guo ZK, Wang R, Chen FX, Liu TM. Streptoxamine, an unprecedented benzoisoindole-deferoxamine hybrid from the locust-derived Streptomyces sp. HKHCa2. Fitoterapia 2018; 127:25-28. [DOI: 10.1016/j.fitote.2018.03.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 03/23/2018] [Accepted: 03/31/2018] [Indexed: 01/01/2023]
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40
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Biosynthesis of Tropolones in Streptomyces spp.: Interweaving Biosynthesis and Degradation of Phenylacetic Acid and Hydroxylations on the Tropone Ring. Appl Environ Microbiol 2018; 84:AEM.00349-18. [PMID: 29654178 DOI: 10.1128/aem.00349-18] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 04/05/2018] [Indexed: 01/10/2023] Open
Abstract
Tropolonoids are important natural products that contain a unique seven-membered aromatic tropolone core and exhibit remarkable biological activities. 3,7-Dihydroxytropolone (DHT) isolated from Streptomyces species is a multiply hydroxylated tropolone exhibiting antimicrobial, anticancer, and antiviral activities. In this study, we determined the DHT biosynthetic pathway by heterologous expression, gene deletion, and biotransformation. Nine trl genes and some of the aerobic phenylacetic acid degradation pathway genes (paa) located outside the trl biosynthetic gene cluster are required for the heterologous production of DHT. The trlA gene encodes a single-domain protein homologous to the C-terminal enoyl coenzyme A (enoyl-CoA) hydratase domain of PaaZ. TrlA truncates the phenylacetic acid catabolic pathway and redirects it toward the formation of heptacyclic intermediates. TrlB is a 3-deoxy-d-arabino-heptulosonic acid-7-phosphate (DAHP) synthase homolog. TrlH is an unusual bifunctional protein bearing an N-terminal prephenate dehydratase domain and a C-terminal chorismate mutase domain. TrlB and TrlH enhanced de novo biosynthesis of phenylpyruvate, thereby providing abundant precursor for the prolific production of DHT in Streptomyces spp. Six seven-membered carbocyclic compounds were identified from the trlC, trlD, trlE, and trlF deletion mutants. Four of these chemicals, including 1,4,6-cycloheptatriene-1-carboxylic acid, tropone, tropolone, and 7-hydroxytropolone, were verified as key biosynthetic intermediates. TrlF is required for the conversion of 1,4,6-cycloheptatriene-1-carboxylic acid into tropone. The monooxygenases TrlE and TrlCD catalyze the regioselective hydroxylations of tropone to produce DHT. This study reveals a natural association of anabolism of chorismate and phenylpyruvate, catabolism of phenylacetic acid, and biosynthesis of tropolones in Streptomyces spp.IMPORTANCE Tropolonoids are promising drug lead compounds because of the versatile bioactivities attributed to their highly oxidized seven-membered aromatic ring scaffolds. Our present study provides clear insight into the biosynthesis of 3,7-dihydroxytropolone (DHT) through the identification of key genes responsible for the formation and modification of the seven-membered aromatic core. We also reveal the intrinsic mechanism of elevated production of DHT and related tropolonoids in Streptomyces spp. The study on DHT biosynthesis in Streptomyces exhibits a good example of antibiotic production in which both anabolic and catabolic pathways of primary metabolism are interwoven into the biosynthesis of secondary metabolites. Furthermore, our study sets the stage for metabolic engineering of the biosynthetic pathway for natural tropolonoid products and provides alternative synthetic biology tools for engineering novel tropolonoids.
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41
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Cytotoxic and renoprotective diterpenoids from Clerodendranthus spicatus. Fitoterapia 2018; 125:135-140. [DOI: 10.1016/j.fitote.2018.01.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 01/03/2018] [Accepted: 01/04/2018] [Indexed: 11/19/2022]
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42
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Yang R, Yang J, Wang L, Huang JP, Xiong Z, Luo J, Yu M, Yan Y, Huang SX. Lorneic Acid Analogues from an Endophytic Actinomycete. JOURNAL OF NATURAL PRODUCTS 2017; 80:2615-2619. [PMID: 28990780 DOI: 10.1021/acs.jnatprod.7b00056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Our natural products discovery program utilizes endophytic actinomycetes associated with plants and employs biological assays and HPLC-based metabolite profiles as the preliminary screen to identify strains of interest, followed by large-scale fermentation and isolation, leading to new and/or bioactive natural products. Six new trialkyl-substituted aromatic acids, namely, lorneic acids E-J (1-6), together with two known analogues (7 and 8), were isolated and identified from the culture extract of Streptomyces sp. KIB-H1289, an endophytic actinomycete obtained from the inner tissue of the bark of Betula mandshurica Nakai. The structures were characterized by interpretation of their spectroscopic data, mainly 1D and 2D NMR. Among them, compound 5 contains a unique disulfide bond that is presumably derived from N-acetylcysteine. All isolated metabolites were evaluated for their inhibitory activity on tyrosinase.
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Affiliation(s)
- Ruimin Yang
- University of the Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | | | - Li Wang
- University of the Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | | | - Zijun Xiong
- University of the Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | | | - Mingming Yu
- University of the Chinese Academy of Sciences , Beijing 100049, People's Republic of China
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43
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Wang L, Yang J, Kong LM, Deng J, Xiong Z, Huang J, Luo J, Yan Y, Hu Y, Li XN, Li Y, Zhao Y, Huang SX. Natural and Semisynthetic Tigliane Diterpenoids with New Carbon Skeletons from Euphorbia dracunculoides as a Wnt Signaling Pathway Inhibitor. Org Lett 2017; 19:3911-3914. [PMID: 28703597 DOI: 10.1021/acs.orglett.7b01813] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Li Wang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jing Yang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Ling-Mei Kong
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jun Deng
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Zijun Xiong
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jianping Huang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Jianying Luo
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yijun Yan
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yikao Hu
- College
of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China
| | - Xiao-Nian Li
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yan Li
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
| | - Yong Zhao
- College
of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China
| | - Sheng-Xiong Huang
- State
Key Laboratory of Phytochemistry and Plant Resources in West China,
and Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China
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44
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Fu P, MacMillan JB. Carpatizine, a novel bridged oxazine derivative generated by non-enzymatic reactions. Org Biomol Chem 2017; 15:5275-5278. [PMID: 28620660 PMCID: PMC5547824 DOI: 10.1039/c7ob01178d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2024]
Abstract
Carpatizine (1), a new bridged oxazine derivative, was isolated from a marine-derived Streptomyces strain SNE-011. The structure was fully determined by spectroscopic analysis, ECD calculations and chemical methods. A plausible non-enzymatic reaction mechanism from daryamide D leading to carpatizine was presented, which was confirmed by chemical transformation.
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Affiliation(s)
- Peng Fu
- Department of Biochemistry, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, USA.
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45
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Guo H, Benndorf R, Leichnitz D, Klassen JL, Vollmers J, Görls H, Steinacker M, Weigel C, Dahse HM, Kaster AK, de Beer ZW, Poulsen M, Beemelmanns C. Isolation, Biosynthesis and Chemical Modifications of Rubterolones A-F: Rare Tropolone Alkaloids from Actinomadura sp. 5-2. Chemistry 2017; 23:9338-9345. [PMID: 28463423 DOI: 10.1002/chem.201701005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Indexed: 12/15/2022]
Abstract
The discovery of six new, highly substituted tropolone alkaloids, rubterolones A-F, from Actinomadura sp. 5-2, isolated from the gut of the fungus-growing termite Macrotermes natalensis is reported. Rubterolones were identified by using fungus-bacteria challenge assays and a HRMS-based dereplication strategy, and characterised by NMR and HRMS analyses and by X-ray crystallography. Feeding experiments and subsequent chemical derivatisation led to a first library of rubterolone derivatives (A-L). Genome sequencing and comparative analyses revealed their putative biosynthetic pathway, which was supported by feeding experiments. This study highlights how gut microbes can present a prolific source of secondary metabolites.
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Affiliation(s)
- Huijuan Guo
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - René Benndorf
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Daniel Leichnitz
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Jonathan L Klassen
- Molecular and Cell Biology, University of Connecticut, 91 North Eagleville Road, Storrs, CT, 06269-3125, USA
| | - John Vollmers
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124, Braunschweig, Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry, Friedrich-Schiller-University Jena, Lessingstraße 8, 07743, Jena, Germany
| | - Matthias Steinacker
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Christiane Weigel
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Hans-Martin Dahse
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
| | - Anne-Kristin Kaster
- Leibniz Institute DSMZ, German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124, Braunschweig, Germany
| | - Z Wilhelm de Beer
- Department of Microbiology and Plant Pathology, Forestry and Agriculture Biotechnology Institute, University of Pretoria, Pretoria, South Africa
| | - Michael Poulsen
- Centre for Social Evolution, University of Copenhagen, 2100, Copenhagen East, Denmark
| | - Christine Beemelmanns
- Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Beutenbergstraße 11a, 07745, Jena, Germany
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46
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Wang P, Hong GJ, Wilson MR, Balskus EP. Production of Stealthin C Involves an S-N-Type Smiles Rearrangement. J Am Chem Soc 2017; 139:2864-2867. [PMID: 28191843 PMCID: PMC5498114 DOI: 10.1021/jacs.6b10586] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The kinamycin family of aromatic polyketide natural products contains an atypical angucycline ring system substituted with a diazo group. The enzymatic chemistry involved in constructing both of these structural features has been largely unexplored. Here we report the in vivo and in vitro production of seongomycin, a shunt product from this pathway, and stealthin C, a proposed biosynthetic precursor to the kinamycins. We show that a single enzyme, the flavin-dependent monooxygenase AlpJ, can generate these metabolites from N-acetyl-l-cysteine and l-cysteine, respectively, and that the synthesis of stealthin C likely proceeds via a nonenzymatic S-N-type Smiles rearrangement. This unexpected route to stealthin C reveals a distinct approach to install aromatic amino groups in metabolites and raises questions about the intermediacy of this species in kinamycin production.
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Affiliation(s)
- Peng Wang
- Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford St, Cambridge, Massachusetts 02138, United States
| | - Gloria J. Hong
- Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford St, Cambridge, Massachusetts 02138, United States
| | - Matthew R. Wilson
- Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford St, Cambridge, Massachusetts 02138, United States
| | - Emily P. Balskus
- Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford St, Cambridge, Massachusetts 02138, United States
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47
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Abstract
Bacterial aromatic polyketides, exemplified by anthracyclines, angucyclines, tetracyclines, and pentangular polyphenols, are a large family of natural products with diverse structures and biological activities and are usually biosynthesized by type II polyketide synthases (PKSs). Since the starting point of biosynthesis and combinatorial biosynthesis in 1984–1985, there has been a continuous effort to investigate the biosynthetic logic of aromatic polyketides owing to the urgent need of developing promising therapeutic candidates from these compounds. Recently, significant advances in the structural and mechanistic identification of enzymes involved in aromatic polyketide biosynthesis have been made on the basis of novel genetic, biochemical, and chemical technologies. This review highlights the progress in bacterial type II PKSs in the past three years (2013–2016). Moreover, novel compounds discovered or created by genome mining and biosynthetic engineering are also included.
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Affiliation(s)
- Zhuan Zhang
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Hai-Xue Pan
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
| | - Gong-Li Tang
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, China
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