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Abstract
Covering: from 2000 up to the very early part of 2023S-Adenosyl-L-methionine (SAM) is a naturally occurring trialkyl sulfonium molecule that is typically associated with biological methyltransfer reactions. However, SAM is also known to donate methylene, aminocarboxypropyl, adenosyl and amino moieties during natural product biosynthetic reactions. The reaction scope is further expanded as SAM itself can be modified prior to the group transfer such that a SAM-derived carboxymethyl or aminopropyl moiety can also be transferred. Moreover, the sulfonium cation in SAM has itself been found to be critical for several other enzymatic transformations. Thus, while many SAM-dependent enzymes are characterized by a methyltransferase fold, not all of them are necessarily methyltransferases. Furthermore, other SAM-dependent enzymes do not possess such a structural feature suggesting diversification along different evolutionary lineages. Despite the biological versatility of SAM, it nevertheless parallels the chemistry of sulfonium compounds used in organic synthesis. The question thus becomes how enzymes catalyze distinct transformations via subtle differences in their active sites. This review summarizes recent advances in the discovery of novel SAM utilizing enzymes that rely on Lewis acid/base chemistry as opposed to radical mechanisms of catalysis. The examples are categorized based on the presence of a methyltransferase fold and the role played by SAM within the context of known sulfonium chemistry.
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Affiliation(s)
- Yu-Hsuan Lee
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.
| | - Daan Ren
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.
| | - Byungsun Jeon
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.
| | - Hung-Wen Liu
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712, USA.
- Division of Chemical Biology & Medicinal Chemistry, College of Pharmacy, University of Texas at Austin, Austin, TX 78712, USA
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Zhao Z, Zhao G, Chai Y, Li W, Song K, Zhao W, Li H, Wu M, Zhou Z, Du YL. Targeted genome mining for microbial antitumor agents acting through DNA intercalation. Synth Syst Biotechnol 2023; 8:520-526. [PMID: 37575356 PMCID: PMC10413001 DOI: 10.1016/j.synbio.2023.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/18/2023] [Accepted: 07/18/2023] [Indexed: 08/15/2023] Open
Abstract
Microbial natural products have been one of the most important sources for drug development. In the current postgenomic era, sequence-driven approaches for natural product discovery are becoming increasingly popular. Here, we develop an effective genome mining strategy for the targeted discovery of microbial metabolites with antitumor activities. Our method employs uvrA-like genes as genetic markers, which have been identified in the biosynthetic gene clusters (BGCs) of several chemotherapeutic drugs of microbial origin and confer self-resistance to the corresponding producers. Through systematic genomic analysis of gifted actinobacteria genera, identification of uvrA-like gene-containing BGCs, and targeted isolation of products from a BGC prioritized for metabolic analysis, we identified a new tetracycline-type DNA intercalator timmycins. Our results thus provide a new genome mining strategy for the efficient discovery of antitumor agents acting through DNA intercalation.
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Affiliation(s)
- Zhijie Zhao
- The Fourth Affiliated Hospital and Department of Microbiology, School of Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Guiyun Zhao
- The Fourth Affiliated Hospital and Department of Microbiology, School of Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Yi Chai
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Wei Li
- The Fourth Affiliated Hospital and Department of Microbiology, School of Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Kaihui Song
- The Fourth Affiliated Hospital and Department of Microbiology, School of Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Wenbin Zhao
- Innovation Institute for Artificial Intelligence in Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Hairong Li
- Innovation Institute for Artificial Intelligence in Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Miaolian Wu
- The Fourth Affiliated Hospital, School of Medicine, Zhejiang University, Yiwu, 322000, China
| | - Zhan Zhou
- Innovation Institute for Artificial Intelligence in Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
- The Fourth Affiliated Hospital, School of Medicine, Zhejiang University, Yiwu, 322000, China
| | - Yi-Ling Du
- The Fourth Affiliated Hospital and Department of Microbiology, School of Medicine, Zhejiang University, Hangzhou, 310058, China
- The Fourth Affiliated Hospital, School of Medicine, Zhejiang University, Yiwu, 322000, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China
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Hulst MB, Grocholski T, Neefjes JJC, van Wezel GP, Metsä-Ketelä M. Anthracyclines: biosynthesis, engineering and clinical applications. Nat Prod Rep 2021; 39:814-841. [PMID: 34951423 DOI: 10.1039/d1np00059d] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Covering: January 1995 to June 2021Anthracyclines are glycosylated microbial natural products that harbour potent antiproliferative activities. Doxorubicin has been widely used as an anticancer agent in the clinic for several decades, but its use is restricted due to severe side-effects such as cardiotoxicity. Recent studies into the mode-of-action of anthracyclines have revealed that effective cardiotoxicity-free anthracyclines can be generated by focusing on histone eviction activity, instead of canonical topoisomerase II poisoning leading to double strand breaks in DNA. These developments have coincided with an increased understanding of the biosynthesis of anthracyclines, which has allowed generation of novel compound libraries by metabolic engineering and combinatorial biosynthesis. Coupled to the continued discovery of new congeners from rare Actinobacteria, a better understanding of the biology of Streptomyces and improved production methodologies, the stage is set for the development of novel anthracyclines that can finally surpass doxorubicin at the forefront of cancer chemotherapy.
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Affiliation(s)
- Mandy B Hulst
- Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands.
| | - Thadee Grocholski
- Department of Life Technologies, University of Turku, FIN-20014 Turku, Finland
| | - Jacques J C Neefjes
- Department of Cell and Chemical Biology and Oncode Institute, Leiden University Medical Centre, Leiden, The Netherlands
| | - Gilles P van Wezel
- Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands.
| | - Mikko Metsä-Ketelä
- Department of Life Technologies, University of Turku, FIN-20014 Turku, Finland
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Zaid ASA, Aleissawy AE, Yahia IS, Yassien MA, Hassouna NA, Aboshanab KM. Streptomyces griseus KJ623766: A Natural Producer of Two Anthracycline Cytotoxic Metabolites β- and γ-Rhodomycinone. Molecules 2021; 26:molecules26134009. [PMID: 34209170 PMCID: PMC8271628 DOI: 10.3390/molecules26134009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 12/12/2022] Open
Abstract
Background: This study aimed to produce, purify, structurally elucidate, and explore the biological activities of metabolites produced by Streptomyces (S.) griseus isolate KJ623766, a recovered soil bacterium previously screened in our lab that showed promising cytotoxic activities against various cancer cell lines. Methods: Production of cytotoxic metabolites from S. griseus isolate KJ623766 was carried out in a 14L laboratory fermenter under specified optimum conditions. Using a 3-(4,5-dimethylthazol-2-yl)-2,5-diphenyl tetrazolium-bromide assay, the cytotoxic activity of the ethyl acetate extract against Caco2 and Hela cancer cell lines was determined. Bioassay-guided fractionation of the ethyl acetate extract using different chromatographic techniques was used for cytotoxic metabolite purification. Chemical structures of the purified metabolites were identified using mass, 1D, and 2D NMR spectroscopic analysis. Results: Bioassay-guided fractionation of the ethyl acetate extract led to the purification of two cytotoxic metabolites, R1 and R2, of reproducible amounts of 5 and 1.5 mg/L, respectively. The structures of R1 and R2 metabolites were identified as β- and γ-rhodomycinone with CD50 of 6.3, 9.45, 64.8 and 9.11, 9.35, 67.3 µg/mL against Caco2, Hela and Vero cell lines, respectively. Values were comparable to those of the positive control doxorubicin. Conclusions: This is the first report about the production of β- and γ-rhodomycinone, two important scaffolds for synthesis of anticancer drugs, from S. griseus.
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Affiliation(s)
- Ahmed S. Abu Zaid
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity St, Abbassia, Cairo P.O. Box 11566, Egypt; (A.S.A.Z.); (M.A.Y.); (N.A.H.)
| | - Ahmed E. Aleissawy
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Organization of African Unity St, Abbassia, Cairo P.O. Box 11566, Egypt;
| | - Ibrahim S. Yahia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Abha P.O. Box 9004, Saudi Arabia;
- Advanced Functional Materials & Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, Abha P.O. Box 9004, Saudi Arabia
- Nanoscience Laboratory for Environmental and Bio-Medical Applications (NLEBA), Semiconductor Lab., Physics Department, Faculty of Education, Ain Shams University, Cairo P.O. Box 11757, Egypt
| | - Mahmoud A. Yassien
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity St, Abbassia, Cairo P.O. Box 11566, Egypt; (A.S.A.Z.); (M.A.Y.); (N.A.H.)
| | - Nadia A. Hassouna
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity St, Abbassia, Cairo P.O. Box 11566, Egypt; (A.S.A.Z.); (M.A.Y.); (N.A.H.)
| | - Khaled M. Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Organization of African Unity St, Abbassia, Cairo P.O. Box 11566, Egypt; (A.S.A.Z.); (M.A.Y.); (N.A.H.)
- Correspondence: ; Tel.: +20-100-758-2620
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Gui C, Chen J, Xie Q, Mo X, Zhang S, Zhang H, Ma J, Li Q, Gu YC, Ju J. CytA, a reductase in the cytorhodin biosynthesis pathway, inactivates anthracycline drugs in Streptomyces. Commun Biol 2019; 2:454. [PMID: 31840099 PMCID: PMC6897945 DOI: 10.1038/s42003-019-0699-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 11/08/2019] [Indexed: 01/22/2023] Open
Abstract
Antibiotic-producing microorganism can develop strategies to deal with self-toxicity. Cytorhodins X and Y, cosmomycins A and B, and iremycin, are produced as final products from a marine-derived Streptomyces sp. SCSIO 1666. These C-7 reduced metabolites show reduced antimicrobial and comparable cytotoxic activities relative to their C-7 glycosylated counterparts. However, the biosynthetic mechanisms and relevant enzymes that drive C-7 reduction in cytorhodin biosynthesis have not yet been characterized. Here we report the discovery and characterization of a reductase, CytA, that mediates C-7 reduction of this anthracycline scaffold; CytA endows the producer Streptomyces sp. SCSIO 1666 with a means of protecting itself from the effects of its anthracycline products. Additionally, we identified cosmomycins C and D as two intermediates involved in cytorhodin biosynthesis and we also broadened the substrate specificity of CytA to clinically used anthracycline drugs.
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Affiliation(s)
- Chun Gui
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Jiang Chen
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Qing Xie
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Laboratory Medicine, Guangdong Medical University, Dongguan, 523808 China
| | - Xuhua Mo
- Shangdong Province Key Laboratory of Applied Mycology, School of Life Sciences, Qingdao Agricultural University, Qingdao, 266109 China
| | - Shanwen Zhang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Hua Zhang
- Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Institute of Laboratory Medicine, Guangdong Medical University, Dongguan, 523808 China
| | - Junying Ma
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
| | - Qinglian Li
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
| | - Yu-Cheng Gu
- Syngenta Jealott’s Hill International Research Centre, Bracknell, Berkshire, RG42 6EY UK
| | - Jianhua Ju
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301 China
- University of Chinese Academy of Sciences, Beijing, 100049 China
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Discovery of 16-Demethylrifamycins by Removing the Predominant Polyketide Biosynthesis Pathway in Micromonospora sp. Strain TP-A0468. Appl Environ Microbiol 2019; 85:AEM.02597-18. [PMID: 30530711 DOI: 10.1128/aem.02597-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 11/27/2018] [Indexed: 12/13/2022] Open
Abstract
A number of strategies have been developed to mine novel natural products based on biosynthetic gene clusters and there have been dozens of successful cases facilitated by the development of genomic sequencing. During our study on biosynthesis of the antitumor polyketide kosinostatin (KST), we found that the genome of Micromonospora sp. strain TP-A0468, the producer of KST, contains other potential polyketide gene clusters, with no encoded products detected. Deletion of kst cluster led to abolishment of KST and the enrichment of several new compounds, which were isolated and characterized as 16-demethylrifamycins (referred to here as compounds 3 to 6). Transcriptional analysis demonstrated that the expression of the essential genes related to the biosynthesis of compounds 3 to 6 was comparable to the level in the wild-type and in the kst cluster deletion strain. This indicates that the accumulation of these compounds was due to the redirection of metabolic flux rather than transcriptional activation. Genetic disruption, chemical complementation, and bioinformatic analysis revealed that the production of compounds 3 to 6 was accomplished by cross talk between the two distantly placed polyketide gene clusters pks3 and M-rif This finding not only enriches the analogue pool and the biosynthetic diversity of rifamycins but also provides an auxiliary strategy for natural product discovery through genome mining in polyketide-producing microorganisms.IMPORTANCE Natural products are essential in the development of novel clinically used drugs. Discovering new natural products and modifying known compounds are still the two main ways to generate new candidates. Here, we have discovered several rifamycins with varied skeleton structures by redirecting the metabolic flux from the predominant polyketide biosynthetic pathway to the rifamycin pathway in the marine actinomycetes species Micromonospora sp. strain TP-A0468. Rifamycins are indispensable chemotherapeutics in the treatment of various diseases such as tuberculosis, leprosy, and AIDS-related mycobacterial infections. This study exemplifies a useful method for the discovery of cryptic natural products in genome-sequenced microbes. Moreover, the 16-demethylrifamycins and their genetically manipulable producer provide a new opportunity in the construction of novel rifamycin derivates to aid in the defense against the ever-growing drug resistance of Mycobacterium tuberculosis.
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Cong Z, Huang X, Liu Y, Liu Y, Wang P, Liao S, Yang B, Zhou X, Huang D, Wang J. Cytotoxic anthracycline and antibacterial tirandamycin analogues from a marine-derived Streptomyces sp. SCSIO 41399. J Antibiot (Tokyo) 2018; 72:45-49. [DOI: 10.1038/s41429-018-0103-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/24/2018] [Accepted: 09/03/2018] [Indexed: 11/09/2022]
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Siitonen V, Nji Wandi B, Törmänen AP, Metsä-Ketelä M. Enzymatic Synthesis of the C-Glycosidic Moiety of Nogalamycin R. ACS Chem Biol 2018; 13:2433-2437. [PMID: 30114358 PMCID: PMC6203184 DOI: 10.1021/acschembio.8b00658] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Carbohydrate moieties are essential for the biological activity of anthracycline anticancer agents such as nogalamycin, which contains l-nogalose and l-nogalamine units. The former of these is attached through a canonical O-glycosidic linkage, but the latter is connected via an unusual dual linkage composed of C-C and O-glycosidic bonds. In this work, we have utilized enzyme immobilization techniques and synthesized l-rhodosamine-thymidine diphosphate (TDP) from α-d-glucose-1-TDP using seven enzymes. In a second step, we assembled the dual linkage system by attaching the aminosugar to an anthracycline aglycone acceptor using the glycosyl transferase SnogD and the α-ketoglutarate dependent oxygenase SnoK. Furthermore, our work indicates that the auxiliary P450-type protein SnogN facilitating glycosylation is surprisingly associated with attachment of the neutral sugar l-nogalose rather than the aminosugar l-nogalamine in nogalamycin biosynthesis.
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Affiliation(s)
- Vilja Siitonen
- Department of Biochemistry, University of Turku, FIN-20014 Turku, Finland
| | - Benjamin Nji Wandi
- Department of Biochemistry, University of Turku, FIN-20014 Turku, Finland
| | | | - Mikko Metsä-Ketelä
- Department of Biochemistry, University of Turku, FIN-20014 Turku, Finland
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Zhang C, Sun C, Huang H, Gui C, Wang L, Li Q, Ju J. Biosynthetic Baeyer-Villiger Chemistry Enables Access to Two Anthracene Scaffolds from a Single Gene Cluster in Deep-Sea-Derived Streptomyces olivaceus SCSIO T05. JOURNAL OF NATURAL PRODUCTS 2018; 81:1570-1577. [PMID: 30015485 DOI: 10.1021/acs.jnatprod.8b00077] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Four known compounds, rishirilide B (1), rishirilide C (2), lupinacidin A (3), and galvaquinone B (4), representing two anthracene scaffolds typical of aromatic polyketides, were isolated from a culture of the deep-sea-derived Streptomyces olivaceus SCSIO T05. From the S. olivaceus producer was cloned and sequenced the rsd biosynthetic gene cluster (BGC) that drives rishirilide biosynthesis. The structural gene rsdK2 inactivation and heterologous expression of the rsd BGC confirmed the single rsd BGC encodes construction of 1-4 and, thus, accounts for two anthracene scaffolds. Precursor incubation experiments with 13C-labeled acetate revealed that a Baeyer-Villiger-type rearrangement plays a central role in construction of 1-4. Two luciferase monooxygenase components, along with a reductase component, are presumably involved in the Baeyer-Villiger-type rearrangement reaction enabling access to the two anthracene scaffold variants. Engineering of the rsd BGC unveiled three SARP family transcriptional regulators, enhancing anthracene production. Inactivation of rsdR4, a MarR family transcriptional regulator, failed to impact production of 1-4, although production of 3 was slightly improved; most importantly rsdR4 inactivation led to the new adduct 6 in high titer. Notably, inactivation of rsdH, a putative amidohydrolase, substantially improved the overall titers of 1-4 by more than 4-fold.
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Affiliation(s)
- Chunyan Zhang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou , 510301 , People's Republic of China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing , 100049 , People's Republic of China
| | - Changli Sun
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou , 510301 , People's Republic of China
| | - Hongbo Huang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou , 510301 , People's Republic of China
| | - Chun Gui
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou , 510301 , People's Republic of China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing , 100049 , People's Republic of China
| | - Liyan Wang
- College of Life Sciences and Oceanology, Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science , Shenzhen University , 3688 Nanhai Avenue , Shenzhen , 518060 , People's Republic of China
| | - Qinglian Li
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou , 510301 , People's Republic of China
| | - Jianhua Ju
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou , 510301 , People's Republic of China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing , 100049 , People's Republic of China
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Gui C, Yuan J, Mo X, Huang H, Zhang S, Gu YC, Ju J. Cytotoxic Anthracycline Metabolites from a Recombinant Streptomyces. JOURNAL OF NATURAL PRODUCTS 2018; 81:1278-1289. [PMID: 29767975 DOI: 10.1021/acs.jnatprod.8b00212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The C7 (C9 or C10)- O-l-rhodosamine-bearing anthracycline antibiotic cytorhodins and their biosynthetic intermediates were recently isolated from Streptomyces sp. SCSIO 1666. Cosmid p17C4 from the Streptomyces lydicus genomic library, which harbors both the biosynthetic genes for l-rhodinose (or 2-deoxy-l-fucose) and its glycosyltransferase (encoded by slgG), was introduced into SCSIO 1666 to yield the recombinant strain Streptomyces sp. SCSIO 1666/17C4. Chemical investigations of this strain's secondary metabolic potential revealed the production of different anthracyclines featuring C7- O-l-rhodinose (or 2-deoxy-l-fucose) instead of the typically observed l-rhodosamine. Purification of the fermentation broth yielded 12 new anthracycline antibiotics including three new ε-rhodomycinone derivatives, 1, 4, and 8, nine new β-rhodomycinone derivatives, 2, 3, 5-7, and 9-12, and three known compounds, l-rhodinose-l-rhodinose-l-rhodinoserhodomycinone (13), ε-rhodomycinone (14), and γ-rhodomycinone (15). All compounds were characterized on the basis of detailed spectroscopic analyses and comparisons with previously reported data. These compounds exhibited cytotoxicity against a panel of human cancer cell lines. Significantly, compounds 4 and 13 displayed pronounced activity against HCT-116 as characterized by IC50 values of 0.3 and 0.2 μM, respectively; these IC50 values are comparable to that of the positive control epirubicin.
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Affiliation(s)
- Chun Gui
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou 510301 , People's Republic of China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing 110039 , People's Republic of China
| | - Jie Yuan
- Zhongshan School of Medicine , Sun Yat-sen University , Guangzhou 510301 , People's Republic of China
| | - Xuhua Mo
- Shandong Province Key Laboratory of Applied Mycology, School of Life Sciences , Qingdao Agricultural University , Qingdao 266109 , People's Republic of China
| | - Hongbo Huang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou 510301 , People's Republic of China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing 110039 , People's Republic of China
| | - Shanwen Zhang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou 510301 , People's Republic of China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing 110039 , People's Republic of China
| | - Yu-Cheng Gu
- Syngenta Jealott's Hill International Research Centre , Bracknell , Berkshire RG42 6EY , U.K
| | - Jianhua Ju
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology , South China Sea Institute of Oceanology, Chinese Academy of Sciences , 164 West Xingang Road , Guangzhou 510301 , People's Republic of China
- University of Chinese Academy of Sciences , 19 Yuquan Road , Beijing 110039 , People's Republic of China
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