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Deng MR, Li Y, Luo X, Zheng XL, Chen Y, Zhang YL, Zhang W, Zhou H, Zhu H. Discovery of Mycothiogranaticins from Streptomyces vietnamensis GIMV4.0001 and the Regulatory Effect of Mycothiol on the Granaticin Biosynthesis. Front Chem 2021; 9:802279. [PMID: 35004619 PMCID: PMC8733708 DOI: 10.3389/fchem.2021.802279] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 12/06/2021] [Indexed: 11/24/2022] Open
Abstract
Granaticins are benzoisochromanequinone polyketides with remarkable antibacterial and anticancer activities. Three sulfur-containing granaticin congeners, mycothiogranaticins A (1), B (2) and granaticin MA (3) were discovered from a granaticin-producing strain of Streptomyces vietnamensis GIMV4.0001. Two of them were structurally determined with mycothiol or N-acetylcysteine moieties and found to be bio-actively reluctant. Disruption of the mshA gene (SVTN_RS20640) that encodes the D-inositol-3-phosphate glycosyltransferase crucial for mycothiol biosynthesis, fully abolished the production of mycothiogranaticins. The result substantiated that the newly discovered mycothiogranaticins are consequences of the combination of the granaticin and mycothiol biosynthetic pathways. The overall granaticin production of the ΔmshA mutant strain was unexpectedly decreased by at least more than 50%, while similar production level of granaticins to that of the wild type strain was observed in an mycothiol-S transferase gene (SVTN_RS22215) disruptant Δmst. These results indicated that the mycothiol deficiency was responsible for the decreased production of granaticins. Mycothiol may positively regulate the biosynthesis of granaticin possibly by maintaining the cellular redox balance. To the best of our knowledge, this is the first report that mycothiol can not only be a direct building block of polyketides but also play a regulatory role in the polyketide biosynthesis.
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Affiliation(s)
- Ming-Rong Deng
- Key Laboratory of Agricultural Microbiomics and Precision Application — Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Collection Center (GDMCC), Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Yan Li
- Key Laboratory of Agricultural Microbiomics and Precision Application — Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Collection Center (GDMCC), Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Xiao Luo
- Key Laboratory of Agricultural Microbiomics and Precision Application — Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Collection Center (GDMCC), Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | - Xiang-Ling Zheng
- Key Laboratory of Agricultural Microbiomics and Precision Application — Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Collection Center (GDMCC), Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | | | - Yu-Lian Zhang
- Key Laboratory of Agricultural Microbiomics and Precision Application — Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Collection Center (GDMCC), Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
| | | | - Hao Zhou
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, China
| | - Honghui Zhu
- Key Laboratory of Agricultural Microbiomics and Precision Application — Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Guangdong Microbial Culture Collection Center (GDMCC), Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, China
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Harunari E, Imada C, Igarashi Y. Konamycins A and B and Rubromycins CA1 and CA2, Aromatic Polyketides from the Tunicate-Derived Streptomyces hyaluromycini MB-PO13 T. JOURNAL OF NATURAL PRODUCTS 2019; 82:1609-1615. [PMID: 31181919 DOI: 10.1021/acs.jnatprod.9b00107] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Four new aromatic polyketides, konamycins A (1) and B (2) and rubromycins CA1 (3) and CA2 (4), were isolated from the culture extract of the tunicate-derived Streptomyces hyaluromycini MB-PO13T. Compounds 1 and 2 possess a benzo[ b]fluorene aglycon modified by C-glycosylation with l-amicetose. Compounds 3 and 4 are the new congeners of rubromycin in which a naphthoquinone and carboxylated isocoumarin are joined through a spiroketal carbon. The structures of these compounds were determined by extensive analysis of 1D and 2D NMR spectroscopic data. Compound 1 showed radical scavenging activity in DPPH and superoxide quenching assays, and 3 and 4 displayed antimicrobial activity against Gram-positive bacteria.
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Affiliation(s)
- Enjuro Harunari
- Biotechnology Research Center and Department of Biotechnology , Toyama Prefectural University , 5180 Kurokawa , Imizu , Toyama 939-0398 , Japan
| | - Chiaki Imada
- Graduate School of Marine Science and Technology , Tokyo University of Marine Science and Technology , 4-5-7 Konan, Minato-ku , Tokyo 108-8477 , Japan
| | - Yasuhiro Igarashi
- Biotechnology Research Center and Department of Biotechnology , Toyama Prefectural University , 5180 Kurokawa , Imizu , Toyama 939-0398 , Japan
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Sun N, Xie X, Wang G, Chen H, Liu Y. Base-Catalyzed Cyclization of 1,6-Diynyl Carboxylates Involving Propargyl-Allenyl Isomerization: Efficient Synthesis of Benzo[b]fluorene and Its Analogues. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601074] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ning Sun
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Xin Xie
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Gaonan Wang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Haoyi Chen
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Yuanhong Liu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
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Development of approaches to fibrostatin F, N-acetyl-L-cysteinyl-containing 1,4-naphthoquinone metabolite of Streptomyces catenulae. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1372-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kotikalapudi R, Siva Kumari AL, Swamy KCK. NHC–gold(i) catalysed [4 + 2] cycloaddition–acyclic addition of dialkyl substituted propargylic esters with 1,3-diphenylisobenzofuran: synthesis of novel benzo[c]fluorenols and substituted dienes. RSC Adv 2014. [DOI: 10.1039/c4ra01105h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
A new class of benzofluorenols is generated via a novel gold carbene complex [IPrAuCl/AgSbF6] catalysed cycloaddition of propargylic esters with 1,3-diphenylisobenzofuran.
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Li Y, Chen Z, Li X, Zhang H, Huang Q, Zhang Y, Xu S. Inositol-1-phosphate synthetase mRNA as a new target for antisense inhibition of Mycobacterium tuberculosis. J Biotechnol 2007; 128:726-34. [PMID: 17275118 DOI: 10.1016/j.jbiotec.2006.12.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2006] [Revised: 12/05/2006] [Accepted: 12/15/2006] [Indexed: 11/17/2022]
Abstract
The need for novel antimicrobial agents to combat the emergence of multi-drug-resistant strains of Mycobacterium tuberculosis is a worldwide urgency. This study has investigated the effects on phosphorothioate-modified antisense oligodeoxyribonucleotides (PS-ODNs) against the mRNA of inositol-1-phosphate synthase, the key enzyme in the first step in inositol synthesis. Inositol is utilized by M. tuberculosis in the production of its major thiol, which is an antioxidant that helps M. tuberculosis to get rid of reactive oxygen species and electrophilic toxins. Real-time RT-PCR analysis revealed that mRNA expression of inositol-1-phosphate (I-1-P) synthase was significantly reduced upon addition of 20 microM PS-ODNs. Treatment with antisense PS-ODNs also reduced the level of mycothiol and the proliferation of M. tuberculosis and enhanced susceptibility to antibiotics. The experiments indicated that the antisense PS-ODNs could enter the cytoplasm of M. tuberculosis and inhibit the expression of I-1-P synthase. This study demonstrates that the M. tuberculosis I-1-P synthase is a target for the development of novel antibiotics and PS-ODN to I-1-P synthase is a promising antimycobaterial candidate.
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Affiliation(s)
- Yuanyuan Li
- MOE Key Laboratory, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Kawano T, Suehiro M, Ueda I. Synthesis and Inclusion Properties of 6,6′-Bi(benzo[b]fluoren-5-ol) Derivative by Cycloaromatization. CHEM LETT 2006. [DOI: 10.1246/cl.2006.58] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Rawat M, Newton GL, Ko M, Martinez GJ, Fahey RC, Av-Gay Y. Mycothiol-deficient Mycobacterium smegmatis mutants are hypersensitive to alkylating agents, free radicals, and antibiotics. Antimicrob Agents Chemother 2002; 46:3348-55. [PMID: 12384335 PMCID: PMC128700 DOI: 10.1128/aac.46.11.3348-3355.2002] [Citation(s) in RCA: 152] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Mycothiol (MSH; 1D-myo-inosityl 2-[N-acetyl-L-cysteinyl]amido-2-deoxy-alpha-D-glucopyranoside) is the major low-molecular-weight thiol produced by mycobacteria. Mutants of Mycobacterium smegmatis mc(2)155 deficient in MSH production were produced by chemical mutagenesis as well as by transposon mutagenesis. One chemical mutant (mutant I64) and two transposon mutants (mutants Tn1 and Tn2) stably deficient in MSH production were isolated by screening for reduced levels of MSH content. The MSH contents of transposon mutants Tn1 and Tn2 were found to be less than 0.1% that of the parent strain, and the MSH content of I64 was found to be 1 to 5% that of the parent strain. All three strains accumulated 1D-myo-inosityl 2-deoxy-alpha-D-glucopyranoside to levels 20- to 25-fold the level found in the parent strain. The cysteine:1D-myo-inosityl 2-amino-2-deoxy-alpha-D-glucopyranoside ligase (MshC) activities of the three mutant strains were < or =2% that of the parent strain. Phenotypic analysis revealed that these MSH-deficient mutants possess increased susceptibilities to free radicals and alkylating agents and to a wide range of antibiotics including erythromycin, azithromycin, vancomycin, penicillin G, rifamycin, and rifampin. Conversely, the mutants possess at least 200-fold higher levels of resistance to isoniazid than the wild type. We mapped the mutation in the chemical mutant by sequencing the mshC gene and showed that a single amino acid substitution (L205P) is responsible for reduced MSH production and its associated phenotype. Our results demonstrate that there is a direct correlation between MSH depletion and enhanced sensitivity to toxins and antibiotics.
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Affiliation(s)
- Mamta Rawat
- Department of Medicine, Division of Infectious Diseases, University of British Columbia, Vancouver, British Columbia V5Z 3J5, Canada
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Knölker HJ, Reddy KR. Isolation and synthesis of biologically active carbazole alkaloids. Chem Rev 2002; 102:4303-427. [PMID: 12428991 DOI: 10.1021/cr020059j] [Citation(s) in RCA: 1083] [Impact Index Per Article: 49.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hans-Joachim Knölker
- Institut für Organische Chemie, Technische Universität Dresden, Bergstrasse 66, 01069 Dresden, Germany
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Frutos Ó, Atienza C, Echavarren A. Synthesis of Benzo[b]phenanthridines and Related Naturally Occurring 2-Aryl-1,4-naphthoquinones by Palladium- and Copper-Catalyzed Coupling of Organostannanes with Bromoquinones. European J Org Chem 2001. [DOI: 10.1002/1099-0690(200101)2001:1<163::aid-ejoc163>3.0.co;2-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hill DC, Wrigley SK, Nisbet LJ. Novel screen methodologies for identification of new microbial metabolites with pharmacological activity. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 1998; 59:73-121. [PMID: 9435461 DOI: 10.1007/bfb0102297] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Micro-organisms continue to provide an important source of chemical diversity for the discovery of compounds with new biological activities. Microbial metabolites discovered recently using assays to detect compounds with potential pharmacological utility are surveyed and found to represent an extensive range of structural types produced by a wide variety of organisms. Assays used for screening samples produced by microbial processes must be robust, sensitive and specific and able to operate above a background of potential interferences from a number of sources. Discovery assays currently in use fall into three main categories cell-based, receptor-ligand interaction and enzyme inhibition assays. Trends in the use of these assays and new developments in assay technology applicable to the screening of microbial samples are examined with particular reference to the high throughput screening environment. For microbial screening to be a competitive route to new drug leads, the disciplines involved must be engineered into a seamlessly integrated process to deliver novel compounds with the required biological properties rapidly.
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Affiliation(s)
- Steven J. Gould
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331
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14
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An approach to the synthesis of the benzo[b]fluorene core of the kinamycins by an arylalkyne-allene cycloaddition. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10053-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Carney JR, Hong ST, Gould SJ. Seongomycin: A new sulfur-containing benzo[b]fluorene derived from genes clustered with those for kinamycin biosynthesis. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)00616-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Angucyclines: Total syntheses, new structures, and biosynthetic studies of an emerging new class of antibiotics. Top Curr Chem (Cham) 1997. [DOI: 10.1007/bfb0119236] [Citation(s) in RCA: 137] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Volkmann C, Rössner E, Metzler M, Zähner H, Zeeck A. Metabolic products of microorganisms, 271. Momofulvenone A and B, new benzo[b]fluorene quinones fromStreptomyces. ACTA ACUST UNITED AC 1995. [DOI: 10.1002/jlac.1995199507158] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Gould SJ, Melville CR. Kinamycin biosytheesis. Synthesis, detection, and incorporation of kinobscurinone, a benzo[b]fluorenone. Bioorg Med Chem Lett 1995. [DOI: 10.1016/0960-894x(94)00457-q] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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