1
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Gui C, Kalkreuter E, Lauterbach L, Yang D, Shen B. Enediyne natural product biosynthesis unified by a diiodotetrayne intermediate. Nat Chem Biol 2024:10.1038/s41589-024-01636-y. [PMID: 38831037 DOI: 10.1038/s41589-024-01636-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 05/08/2024] [Indexed: 06/05/2024]
Abstract
Enediyne natural products are renowned for their potent cytotoxicities but the biosynthesis of their defining 1,5-diyne-3-ene core moiety remains largely enigmatic. Since the discovery of the enediyne polyketide synthase cassette in 2002, genome sequencing has revealed thousands of distinct enediyne biosynthetic gene clusters, each harboring the conserved enediyne polyketide synthase cassette. Here we report that (1) the products of this cassette are an iodoheptaene, a diiodotetrayne and two pentaynes; (2) the diiodotetrayne represents a common biosynthetic intermediate for all known enediynes; and (3) cryptic iodination can be exploited to increase enediyne titers. These findings establish a unified biosynthetic pathway for the enediynes, set the stage to further advance enediyne core biosynthesis and enable fundamental breakthroughs in chemistry, enzymology and translational applications of enediyne natural products.
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Affiliation(s)
- Chun Gui
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, University of Florida, Jupiter, FL, USA
| | - Edward Kalkreuter
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, University of Florida, Jupiter, FL, USA
| | - Lukas Lauterbach
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, University of Florida, Jupiter, FL, USA
| | - Dong Yang
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, University of Florida, Jupiter, FL, USA
- Natural Products Discovery Center, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, University of Florida, Jupiter, FL, USA
| | - Ben Shen
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, University of Florida, Jupiter, FL, USA.
- Natural Products Discovery Center, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, University of Florida, Jupiter, FL, USA.
- Department of Molecular Medicine, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation and Technology, University of Florida, Jupiter, FL, USA.
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2
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Bodnar AK, Newhouse TR. Accessing Z-Enynes via Cobalt-Catalyzed Propargylic Dehydrogenation. Angew Chem Int Ed Engl 2024:e202402638. [PMID: 38591826 DOI: 10.1002/anie.202402638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/10/2024]
Abstract
Alkenes constitute an enabling motif in organic synthesis, as they can be functionalized to form highly substituted molecules. Z-alkenes are generally challenging to access due to the thermodynamic preference for the formation of E-alkenes compared to Z-alkenes. Dehydrogenation methodologies to selectively form Z-alkenes have not yet been reported. Herein, we report a Z-selective, propargylic dehydrogenation that provides 1,3-enynes through the invention of a Co-catalyzed oxidation system. Observation of a kinetic isotope effect (KIE) revealed that deprotonation of the propargylic position is the rate limiting step. Additionally, isomerization experiments were conducted and confirmed that the observed Z-selectivity is a kinetic effect. A proposed stereomechanistic model for the Z-selectivity is included.
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Affiliation(s)
- Alexandra K Bodnar
- Department of Chemistry, Yale University, 225 Prospect St, New Haven, Connecticut, 06520-8107, United States
| | - Timothy R Newhouse
- Department of Chemistry, Yale University, 225 Prospect St, New Haven, Connecticut, 06520-8107, United States
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3
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Gui C, Kalkreuter E, Liu YC, Li G, Steele AD, Yang D, Chang C, Shen B. Cofactorless oxygenases guide anthraquinone-fused enediyne biosynthesis. Nat Chem Biol 2024; 20:243-250. [PMID: 37945897 DOI: 10.1038/s41589-023-01476-2] [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: 03/21/2023] [Accepted: 10/10/2023] [Indexed: 11/12/2023]
Abstract
The anthraquinone-fused enediynes (AFEs) combine an anthraquinone moiety and a ten-membered enediyne core capable of generating a cytotoxic diradical species. AFE cyclization is triggered by opening the F-ring epoxide, which is also the site of the most structural diversity. Previous studies of tiancimycin A, a heavily modified AFE, have revealed a cryptic aldehyde blocking installation of the epoxide, and no unassigned oxidases could be predicted within the tnm biosynthetic gene cluster. Here we identify two consecutively acting cofactorless oxygenases derived from methyltransferase and α/β-hydrolase protein folds, TnmJ and TnmK2, respectively, that are responsible for F-ring tailoring in tiancimycin biosynthesis by comparative genomics. Further biochemical and structural characterizations reveal that the electron-rich AFE anthraquinone moiety assists in catalyzing deformylation, epoxidation and oxidative ring cleavage without exogenous cofactors. These enzymes therefore fill important knowledge gaps for the biosynthesis of this class of molecules and the underappreciated family of cofactorless oxygenases.
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Affiliation(s)
- Chun Gui
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA
| | - Edward Kalkreuter
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA
| | - Yu-Chen Liu
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA
| | - Gengnan Li
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA
| | - Andrew D Steele
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA
| | - Dong Yang
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA
- Natural Products Discovery Center, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA
| | - Changsoo Chang
- Structural Biology Center, X-ray Science Division, Argonne National Laboratory, Lemont, IL, USA
| | - Ben Shen
- Department of Chemistry, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA.
- Natural Products Discovery Center, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA.
- Department of Molecular Medicine, The Herbert Wertheim UF Scripps Institute for Biomedical Innovation & Technology, University of Florida, Jupiter, FL, USA.
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4
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Sun D, Rajeshkumar T, Li Y, Xu J, Chen R, Wan Z, Lv Z, Maron L, Chen YH. Lanthanum-Catalyzed Stereospecific Cross-Coupling of Propargylic Substrates with Grignard Reagents. Org Lett 2023; 25:6730-6735. [PMID: 37671845 DOI: 10.1021/acs.orglett.3c02600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
Transition-metal-catalyzed cross-coupling of propargylic electrophiles and Grignard reagents provides densely functionalized products that are extremely useful synthetic intermediates. However, examples of conversion of propargylic derivatives to form propargyl compounds remain limited due to the challenging regioselectivity. We use LaCl3·2LiCl to catalyze propargylation of Grignard reagents in the absence of ligand in high regioselectivity and stereospecificity. The approach shows a wide substrate scope using alkyl or (hetero)aryl Grignard reagents and alkynyl electrophiles with different leaving groups. Our protocol was further applied for the formal synthesis of frondosin B. It is worth exploring methodologies utilizing the naturally abundant and relatively nontoxic lanthanum catalysts.
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Affiliation(s)
- Dandan Sun
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Thayalan Rajeshkumar
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Yifan Li
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Jiaxin Xu
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Runkai Chen
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Zhaohua Wan
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
| | - Zongchao Lv
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
- CMC Pharmaceutical Research Center, Wuhan RS Pharmaceutical Co., Ltd., Wuhan 430073, China
| | - Laurent Maron
- LPCNO, CNRS & INSA, Université Paul Sabatier, 135 Avenue de Rangueil, 31077 Toulouse, France
| | - Yi-Hung Chen
- Institute for Advanced Studies (IAS), Wuhan University, Wuhan, Hubei 430072, People's Republic of China
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5
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Pal P, Wessely SML, Townsend CA. Normal and Aberrant Methyltransferase Activities Give Insights into the Final Steps of Dynemicin A Biosynthesis. J Am Chem Soc 2023; 145:12935-12947. [PMID: 37276497 PMCID: PMC10985829 DOI: 10.1021/jacs.3c04393] [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] [Indexed: 06/07/2023]
Abstract
The naturally occurring enediynes are notable for their complex structures, potent DNA cleaving ability, and emerging usefulness in cancer chemotherapy. They can be classified into three distinct structural families, but all are thought to originate from a common linear C15-heptaene. Dynemicin A (DYN) is the paradigm member of anthraquinone-fused enediynes, one of the three main classes and exceptional among them for derivation of both its enediyne and anthraquinone portions from this same early biosynthetic building block. Evidence is growing about how two structurally dissimilar, but biosynthetically related, intermediates combine in two heterodimerization reactions to create a nitrogen-containing C30-coupled product. We report here deletions of two genes that encode biosynthetic proteins that are annotated as S-adenosylmethionine (SAM)-dependent methyltransferases. While one, DynO6, is indeed the required O-methyltransferase implicated long ago in the first studies of DYN biosynthesis, the other, DynA5, functions in an unanticipated manner in the post-heterodimerization events that complete the biosynthesis of DYN. Despite its removal from the genome of Micromonospora chersina, the ΔdynA5 strain retains the ability to synthesize DYN, albeit in reduced titers, accompanied by two unusual co-metabolites. We link the appearance of these unexpected structures to a substantial and contradictory body of other recent experimental data to advance a biogenetic rationale for the downstream steps that lead to the final formation of DYN. A sequence of product-forming transformations that is in line with new and existing experimental results is proposed and supported by a model reaction that also encompasses the formation of the crucial epoxide essential for the activation of DYN for DNA cleavage.
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Affiliation(s)
- Paramita Pal
- Department of Chemistry, The Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States
| | - Serena M L Wessely
- Department of Chemistry, The Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States
| | - Craig A Townsend
- Department of Chemistry, The Johns Hopkins University, 3400 N. Charles Street, Baltimore, Maryland 21218, United States
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6
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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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7
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Steele AD, Kiefer AF, Hwang D, Yang D, Teijaro CN, Adhikari A, Rader C, Shen B. Application of a Biocatalytic Strategy for the Preparation of Tiancimycin-Based Antibody-Drug Conjugates Revealing Key Insights into Structure-Activity Relationships. J Med Chem 2023; 66:1562-1573. [PMID: 36599039 DOI: 10.1021/acs.jmedchem.2c01771] [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] [Indexed: 01/06/2023]
Abstract
Antibody-drug conjugates (ADCs) are cancer chemotherapeutics that utilize a monoclonal antibody (mAb)-based delivery system, a cytotoxic payload, and a chemical linker. ADC payloads must be strategically functionalized to allow linker attachment without perturbing the potency required for ADC efficacy. We previously developed a biocatalytic system for the precise functionalization of tiancimycin (TNM)-based payloads. The TNMs are anthraquinone-fused enediynes (AFEs) and have yet to be translated into the clinic. Herein, we report the translation of biocatalytically functionalized TNMs into ADCs in combination with the dual-variable domain (DVD)-mAb platform. The DVD enables both site-specific conjugation and a plug-and-play modularity for antigen-targeting specificity. We evaluated three linker chemistries in terms of TNM-based ADC potency and antigen selectivity, demonstrating a trade-off between potency and selectivity. This represents the first application of AFE-based payloads to DVDs for ADC development, a workflow that is generalizable to further advance AFE-based ADCs for multiple cancer types.
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Affiliation(s)
| | | | | | | | | | - Ajeeth Adhikari
- Skaggs Graduate School of Chemical and Biological Sciences, Scripps Research, Jupiter, Florida 33458, United States
| | - Christoph Rader
- Skaggs Graduate School of Chemical and Biological Sciences, Scripps Research, Jupiter, Florida 33458, United States
| | - Ben Shen
- Skaggs Graduate School of Chemical and Biological Sciences, Scripps Research, Jupiter, Florida 33458, United States
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8
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Ji P, Liu X, Xu J, Zhang X, Guo J, Chen W, Zhao B. Direct Asymmetric α‐C−H Addition of N‐unprotected Propargylic Amines to Trifluoromethyl Ketones by Carbonyl Catalysis. Angew Chem Int Ed Engl 2022; 61:e202206111. [DOI: 10.1002/anie.202206111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Pengwei Ji
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Xiaopei Liu
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Jiwei Xu
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Xu Zhang
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Jianhua Guo
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Wen‐Wen Chen
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Baoguo Zhao
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
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9
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Ji P, Liu X, Xu J, Zhang X, Guo J, Chen W, Zhao B. Direct Asymmetric α‐C−H Addition of N‐unprotected Propargylic Amines to Trifluoromethyl Ketones by Carbonyl Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206111] [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)
- Pengwei Ji
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Xiaopei Liu
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Jiwei Xu
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Xu Zhang
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Jianhua Guo
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Wen‐Wen Chen
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
| | - Baoguo Zhao
- The Education Ministry Key Lab of Resource Chemistry Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Frontiers Science Center of Biomimetic Catalysis Shanghai Normal University Shanghai 200234 China
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10
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Gui C, Kalkreuter E, Liu YC, Adhikari A, Teijaro CN, Yang D, Chang C, Shen B. Intramolecular C–C Bond Formation Links Anthraquinone and Enediyne Scaffolds in Tiancimycin Biosynthesis. J Am Chem Soc 2022; 144:20452-20462. [DOI: 10.1021/jacs.2c08957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Ajeeth Adhikari
- Skaggs Graduate School of Chemical and Biological Sciences, Scripps Research, Jupiter, Florida 33458, United States
| | | | | | - Changsoo Chang
- Structural Biology Center, X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Ben Shen
- Skaggs Graduate School of Chemical and Biological Sciences, Scripps Research, Jupiter, Florida 33458, United States
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11
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Pfeffer C, Probst P, Wannenmacher N, Frey W, Peters R. Direct Enantioselective Addition of Alkynes to Imines by a Highly Efficient Palladacycle Catalyst. Angew Chem Int Ed Engl 2022; 61:e202206835. [PMID: 35701311 PMCID: PMC9545068 DOI: 10.1002/anie.202206835] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Indexed: 11/12/2022]
Abstract
Enantiopure propargylic amines are highly valuable synthetic building blocks. Much effort has been devoted to develop methods for their preparation. The arguably most important strategy is the 1,2‐addition of alkynes to imines. Despite remarkable progress, the known methods using Zn and Cu catalysts suffer from the need for high catalyst loadings, typically ranging from 2–60 mol % for neutral aldimine substrates. Here we report a planar chiral Pd complex acting as very efficient catalyst for direct asymmetric alkyne additions to imines, requiring very low catalyst loadings. Turnover numbers of up to 8700 were accomplished. Our investigation suggests that a Pd‐acetylide complex is generated as a catalytically relevant intermediate by the aid of an acac ligand acting as internal catalytic base. It is shown that the catalyst is quite stable under the reaction conditions and that product inhibition is not an issue. A total of 39 examples is shown which all yielded almost enantiopure products.
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Affiliation(s)
- Camilla Pfeffer
- Universität Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Patrick Probst
- Universität Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Nick Wannenmacher
- Universität Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Frey
- Universität Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 70569 Stuttgart Germany
| | - René Peters
- Universität Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 70569 Stuttgart Germany
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12
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Yan S, Zeng M, Wang H, Zhang H. Micromonospora: A Prolific Source of Bioactive Secondary Metabolites with Therapeutic Potential. J Med Chem 2022; 65:8735-8771. [PMID: 35766919 DOI: 10.1021/acs.jmedchem.2c00626] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Micromonospora, one of the most important actinomycetes genera, is well-known as the treasure trove of bioactive secondary metabolites (SMs). Herein, together with an in-depth genomic analysis of the reported Micromonospora strains, all SMs from this genus are comprehensively summarized, containing structural features, bioactive properties, and mode of actions as well as their biosynthetic and chemical synthesis pathways. The perspective enables a detailed view of Micromonospora-derived SMs, which will enrich the chemical diversity of natural products and inspire new drug discovery in the pharmaceutical industry.
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Affiliation(s)
- Suqi Yan
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
| | - Mingyuan Zeng
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hong Wang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
| | - Huawei Zhang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
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13
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Pfeffer C, Probst P, Wannenmacher N, Frey W, Peters R. Direct Enantioselective Addition of Alkynes to Imines by a Highly Efficient Palladacycle Catalyst. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Camilla Pfeffer
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 D-70569 Stuttgart GERMANY
| | - Patrick Probst
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie GERMANY
| | - Nick Wannenmacher
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 D-70569 Stuttgart GERMANY
| | - Wolfgang Frey
- Universität Stuttgart: Universitat Stuttgart Institut für Organische Chemie Pfaffenwaldring 55 D-70569 Stuttgart GERMANY
| | - René Peters
- Universität Stuttgart Institut für Organische Chemie Pfaffenwaldring 55Raum 06.301 70569 Stuttgart GERMANY
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14
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Feng X, Liu H, Pan J, Xiong Y, Zhu X, Yan X, Duan Y, Huang Y. Liposome-Encapsulated Tiancimycin A Is Active against Melanoma and Metastatic Breast Tumors: The Effect of cRGD Modification of the Liposomal Carrier and Tiancimycin A Dose on Drug Activity and Toxicity. Mol Pharm 2022; 19:1078-1090. [PMID: 35290067 DOI: 10.1021/acs.molpharmaceut.1c00753] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Enediyne natural products, including neocarzinostatin and calicheamicin γ1, are used in the form of a copolymer or antibody-drug conjugate to treat hepatomas and leukemia. Tiancimycin (TNM) A is a novel anthraquinone-fused enediyne that can rapidly and completely kill tumor cells. Herein, we encapsulated TNM A in liposomes (Lip-TNM A) and cyclic arginine-glycine-aspartate (cRGD)-functionalized liposomes (cRGD-Lip-TNM A) and demonstrated its antitumor activity using mouse xenografts. Because TNM A causes rapid DNA damage, cell cycle arrest, and apoptosis, these nanoparticles exhibited potent cytotoxicity against multiple tumor cells for 8 h. In B16-F10 and KPL-4 xenografts, both nanoparticles showed superior potency over doxorubicin and trastuzumab. However, cRGD-Lip-TNM A reduced the tumor weight more significantly than Lip-TNM A in B16-F10 xenografts, in which the αvβ3-integrin receptors are significantly overexpressed in this melanoma. Lip-TNM A was slightly more active than cRGD-Lip-TNM A against KPL-4 xenografts, which probably reflected the difference of their in vivo fate in this mouse model. In a highly metastatic 4T1 tumor model, cRGD-Lip-TNM A reduced tumor metastasis induced by losartan, a tumor microenvironment-remodeling agent. These findings suggest that targeted delivery of enediynes with unique modes of action may enable more effective translation of anticancer nanomedicines.
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Affiliation(s)
- Xueqiong Feng
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Huiming Liu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Jian Pan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Yi Xiong
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Xiangcheng Zhu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China.,Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discover, Changsha, Hunan 410011, China
| | - Xiaohui Yan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China.,State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China.,Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discover, Changsha, Hunan 410011, China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan 410011, China
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15
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Cheemalamarri C, Batchu UR, Thallamapuram NP, Katragadda SB, Reddy Shetty P. A review on hydroxy anthraquinones from bacteria: crosstalk's of structures and biological activities. Nat Prod Res 2022; 36:6186-6205. [PMID: 35175877 DOI: 10.1080/14786419.2022.2039920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Anthraquinones (AQ), unveiling large structural diversity, among polyketides demonstrate a wide range of applications. The hydroxy anthraquinones (HAQ), a group of anthraquinone derivatives, are secondary metabolites produced by bacteria and eukaryotes. Plant-based HAQ are well-studied unlike bacterial HAQ and applied as herbal medicine for centuries. Bacteria are known to synthesize a wide variety of structurally diversified HAQ through polyketide pathways using polyketide synthases (I, II & III) principally through polyketide synthase-II. The actinobacteria especially the genus Streptomyces and Micromonospora represent a rich source of HAQ, however novel HAQ are reported from the rare actinobacteria genera (Salinospora, Actinoplanes, Amycoloptosis, Verrucosispora, Xenorhabdus, and Photorhabdus. Though several reviews are available on AQ produced by plants and fungi, however none on bacterial AQ. The current review focused on sources of bacterial HAQ and their structural diversity and biological activities along with toxicity and side effects.
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Affiliation(s)
- Chandrasekhar Cheemalamarri
- Medicinal Chemistry and Biotechnology Lab- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India.,Department of Biotechnology, Acharya Nagarjuna University, Guntur, Andhra Pradesh, India
| | - Uma Rajeswari Batchu
- Medicinal Chemistry and Biotechnology Lab- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
| | - Nagendra Prasad Thallamapuram
- Medicinal Chemistry and Biotechnology Lab- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
| | - Suresh Babu Katragadda
- Centre for natural products and traditional knowledge, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
| | - Prakasham Reddy Shetty
- Medicinal Chemistry and Biotechnology Lab- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, India
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16
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Yang D, Ye F, Teijaro CN, Hwang D, Annaval T, Adhikari A, Li G, Yan X, Gui C, Rader C, Shen B. Functional Characterization of Cytochrome P450 Hydroxylase YpmL in Yangpumicin A Biosynthesis and Its Application for Anthraquinone-Fused Enediyne Structural Diversification. Org Lett 2022; 24:1219-1223. [PMID: 35084871 PMCID: PMC9594962 DOI: 10.1021/acs.orglett.2c00009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Comparative analyses of four anthraquinone-fused enediyne biosynthetic gene clusters (BGCs) identified YpmL as a cytochrome P450 enzyme unique to the yangpumicin (YPM) BGC. In vitro characterization of YpmL established it as a hydroxylase, catalyzing C-6 hydroxylation in YPM A biosynthesis. In vivo application of YpmL enabled engineered production of four new tiancimycin analogues (14-17). Evaluation of their cytotoxicity against selected human cancer cell lines shed new insights into the enediyne structure-activity relationship.
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Affiliation(s)
- Dong Yang
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
- Natural Products Discovery Center at Scripps Research, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Fei Ye
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | | | - Dobeen Hwang
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Thibault Annaval
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Ajeeth Adhikari
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Gengnan Li
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Xiaohui Yan
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Chun Gui
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Christoph Rader
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Ben Shen
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL 33458, USA
- Natural Products Discovery Center at Scripps Research, The Scripps Research Institute, Jupiter, FL 33458, USA
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17
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Kheilkordi Z, Ziarani GM, Mohajer F. Application of Multi-component Reaction in the Synthesis of Heterocyclic [3.3.3] Propellane Derivatives. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220112161201] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Propellanes and derivatives have attractive properties due to their unique structure. Therefore, [3.3.3] propellanes, containing tricyclic structures with one of the carbon-carbon bonds common in three rings, were used in natural products, pharmaceutical compounds, and heterocyclic compounds, which were biologically important. The various multi-component reactions were applied in the synthesis of propellanes, which were highlighted throughout this review
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Affiliation(s)
- Zohreh Kheilkordi
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran,
| | | | - Fatemeh Mohajer
- Department of Chemistry, Faculty of Physics and Chemistry, Alzahra University, Tehran,
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18
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Xue L, Zhang L, Zhang C, Zhao X, Dang W, Wang Z, Wang C, Suo T, Yan X. Discovery of Tiancimycin Congeners from Streptomyces sp. CB03234-S. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202111018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Wu Z, Duan W. Direct Asymmetric α-C—H Functionalization of N-Unprotected Propargylic Amines by Carbonyl Catalysis. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202200075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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20
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Li G, Lou M, Qi X. A brief overview of classical natural product drug synthesis and bioactivity. Org Chem Front 2022. [DOI: 10.1039/d1qo01341f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This manuscript briefly overviewed the total synthesis and structure–activity relationship studies of eight classical natural products, which emphasizes the important role of total synthesis in natural product-based drug development.
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Affiliation(s)
- Gen Li
- National Institute of Biological Sciences (NIBS), 7 Science Park Road ZGC Life Science Park, Beijing 102206, China
| | - Mingliang Lou
- National Institute of Biological Sciences (NIBS), 7 Science Park Road ZGC Life Science Park, Beijing 102206, China
| | - Xiangbing Qi
- National Institute of Biological Sciences (NIBS), 7 Science Park Road ZGC Life Science Park, Beijing 102206, China
- Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University, Beijing 100084, China
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21
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Cai Y, Lehmann F, Peiter E, Chen S, Zhu J, Hinderberger D, Binder WH. Bergman cyclization of main-chain enediyne polymers for enhanced DNA cleavage. Polym Chem 2022. [DOI: 10.1039/d2py00259k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The design of novel polymers bearing multiple ene-diynes in the main chain are reported, allowing to tune activity of DNA cleavage via the Bergman cyclization.
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Affiliation(s)
- Yue Cai
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, von-Danckelmann-Platz 4, Halle D-06120, Germany
| | - Florian Lehmann
- Physical Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, von-Danckelmann-Platz 4, Halle D-06120, Germany
| | - Edgar Peiter
- Faculty of Natural Sciences III, Plant Nutrition Laboratory, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Halle D-06099, Germany
| | - Senbin Chen
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Jintao Zhu
- Key Laboratory of Materials Chemistry for Energy Conversion and Storage, Ministry of Education (HUST), School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China
| | - Dariush Hinderberger
- Physical Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, von-Danckelmann-Platz 4, Halle D-06120, Germany
| | - Wolfgang H. Binder
- Macromolecular Chemistry, Institute of Chemistry, Faculty of Natural Science II (Chemistry, Physics and Mathematics), Martin-Luther-University Halle-Wittenberg, von-Danckelmann-Platz 4, Halle D-06120, Germany
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22
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Abstract
Covering: up to the end of July, 2021Anthraquinone-fused enediynes (AFEs) are a subfamily of enediyne natural products. Dynemicin A (DYN A), the first member of the AFE family, was discovered more than thirty years ago. Subsequently, extensive studies have been reported on the mode of action and the interactions of AFEs with DNA using DYN A as a model. However, progress in the discovery, biosynthesis and clinical development of AFEs has been limited for a long time. In the past five years, four new AFEs have been discovered and significant progress has been made in the biosynthesis of AFEs, especially on the biogenesis of the anthraquinone moiety and their tailoring steps. Moreover, the streamlined total synthesis of AFEs and their analogues boosts the preparation of AFE-based linker-drugs, thus enabling the development of AFE-based antibody-drug conjugates (ADCs). This review summarizes the discovery, mechanism of action, biosynthesis, total synthesis and preclinical studies of AFEs.
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Affiliation(s)
- Xiaohui Yan
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, West Area, Tuanbo New Town, Jinghai District, Tianjin, China.
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23
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Ma GL, Tran HT, Low ZJ, Candra H, Pang LM, Cheang QW, Fang M, Liang ZX. Pathway Retrofitting Yields Insights into the Biosynthesis of Anthraquinone-Fused Enediynes. J Am Chem Soc 2021; 143:11500-11509. [PMID: 34293863 DOI: 10.1021/jacs.1c03911] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Anthraquinone-fused enediynes (AQEs) are renowned for their distinctive molecular architecture, reactive enediyne warhead, and potent anticancer activity. Although the first members of AQEs, i.e., dynemicins, were discovered three decades ago, how their nitrogen-containing carbon skeleton is synthesized by microbial producers remains largely a mystery. In this study, we showed that the recently discovered sungeidine pathway is a "degenerative" AQE pathway that contains upstream enzymes for AQE biosynthesis. Retrofitting the sungeidine pathway with genes from the dynemicin pathway not only restored the biosynthesis of the AQE skeleton but also produced a series of novel compounds likely as the cycloaromatized derivatives of chemically unstable biosynthetic intermediates. The results suggest a cascade of highly surprising biosynthetic steps leading to the formation of the anthraquinone moiety, the hallmark C8-C9 linkage via alkyl-aryl cross-coupling, and the characteristic epoxide functionality. The findings provide unprecedented insights into the biosynthesis of AQEs and pave the way for examining these intriguing biosynthetic enzymes.
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Affiliation(s)
- Guang-Lei Ma
- School of Biological Sciences, Nanyang Technological University, Singapore 637551
| | - Hoa Thi Tran
- School of Biological Sciences, Nanyang Technological University, Singapore 637551
| | - Zhen Jie Low
- School of Biological Sciences, Nanyang Technological University, Singapore 637551
| | - Hartono Candra
- School of Biological Sciences, Nanyang Technological University, Singapore 637551
| | - Li Mei Pang
- School of Biological Sciences, Nanyang Technological University, Singapore 637551
| | - Qing Wei Cheang
- School of Biological Sciences, Nanyang Technological University, Singapore 637551
| | - Mingliang Fang
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798
| | - Zhao-Xun Liang
- School of Biological Sciences, Nanyang Technological University, Singapore 637551
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24
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Annaval T, Teijaro CN, Adhikari A, Yan X, Chen JJ, Crnovcic I, Yang D, Shen B. Cytochrome P450 Hydroxylase TnmL Catalyzing Sequential Hydroxylation with an Additional Proofreading Activity in Tiancimycin Biosynthesis. ACS Chem Biol 2021; 16:1172-1178. [PMID: 34138533 DOI: 10.1021/acschembio.1c00365] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tiancimycin (TNM) A belongs to the anthraquinone-fused subfamily of enediyne natural products, and selected enediynes have been translated into clinical drugs. Previously, inactivation of tnmL in Streptomyces sp. CB03234 resulted in the accumulation of TNM B and TNM E, supporting the functional assignment of TnmL as a cytochrome P450 hydroxylase that catalyzes A-ring modification in TNM A biosynthesis. Herein, we report in vitro characterization of TnmL, revealing that (i) TnmL catalyzes two successive hydroxylations of TNM E, resulting in sequential production of TNM F and TNM C, (ii) TnmL shows a strict substrate preference, with the C-26 side chain playing a critical role in substrate binding, and (iii) TnmL demethylates the C-7 OCH3 group of TNM G, affording TNM F, thereby channeling the shunt product TNM G back into TNM A biosynthesis and representing a rare proofreading logic for natural product biosynthesis. These findings shed new insights into anthraquinone-fused enediyne biosynthesis.
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25
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Hindra, Yang D, Luo J, Huang T, Yan X, Adhikari A, Teijaro CN, Ge H, Shen B. Submerged fermentation of Streptomyces uncialis providing a biotechnology platform for uncialamycin biosynthesis, engineering, and production. J Ind Microbiol Biotechnol 2021; 48:6178870. [PMID: 33739406 PMCID: PMC8210685 DOI: 10.1093/jimb/kuab025] [Citation(s) in RCA: 3] [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: 12/26/2020] [Accepted: 03/15/2021] [Indexed: 12/19/2022]
Abstract
Uncialamycin (UCM) belongs to the anthraquinone-fused subfamily of 10-membered enediyne natural products that exhibits an extraordinary cytotoxicity against a wide spectrum of human cancer cell lines. Antibody-drug conjugates, utilizing synthetic analogues of UCM as payloads, are in preclinical development. UCM is exclusively produced by Streptomyces uncialis DCA2648 on solid agar medium with low titers (∼0.019 mg/l), limiting its supply by microbial fermentation and hampering its biosynthetic and engineering studies by in vivo pathway manipulation. Here, we report cultivation conditions that enable genetic manipulation of UCM biosynthesis in vivo and allow UCM production, with improved titers, by submerged fermentation of the engineered S. uncialis strains. Specifically, the titer of UCM was improved nearly 58-fold to ∼1.1 mg/l through the combination of deletion of biosynthetic gene clusters encoding unrelated metabolites from the S. uncialis wild-type, chemical mutagenesis and manipulation of pathway-specific regulators to generate the engineered S. uncialis strains, and finally medium optimization of the latter for UCM production. Genetic manipulation of UCM biosynthesis was demonstrated by inactivating selected genes in the engineered S. uncialis strains, one of which afforded a mutant strain accumulating tiancimycin B, a common biosynthetic intermediate known for the anthraquinone-fused subfamily of enediyne natural products. These findings highlight a biotechnology platform for UCM biosynthesis, engineering, and production that should facilitate both its fundamental studies and translational applications.
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Affiliation(s)
| | | | - Jun Luo
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Tingting Huang
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Xiaohui Yan
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Ajeeth Adhikari
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | | | - Huiming Ge
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458, USA
| | - Ben Shen
- Correspondence to: Ben Shen. Phone: +1-561-228-2456. Fax: +1-561-228-2472. E-mail:
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26
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Zhang M, Ma H, Li B, Sun K, Lu H, Wang W, Cheng X, Li X, Ding Y, Hu A. Nucleophilic Addition to Diradicals Derived From Cycloaromatization of Maleimide‐Based Enediynes. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Ke Sun
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Wenbo Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Xiaoyu Cheng
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Xiaoxuan Li
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering East China University of Science and Technology Shanghai 200237 P. R. China
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27
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28
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Igarashi M, Sawa R, Umekita M, Hatano M, Arisaka R, Hayashi C, Ishizaki Y, Suzuki M, Kato C. Sealutomicins, new enediyne antibiotics from the deep-sea actinomycete Nonomuraea sp. MM565M-173N2. J Antibiot (Tokyo) 2021; 74:291-299. [PMID: 33531630 DOI: 10.1038/s41429-020-00402-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 12/09/2020] [Accepted: 12/17/2020] [Indexed: 01/30/2023]
Abstract
A Nonomuraea sp. strain MM565M-173N2 was isolated from deep-sea sediment off the Sanriku coast, and new antibiotics were evaluated against carbapenem-resistant Enterobacteriaceae (CRE), which is a problematic group of bacteria because of their antimicrobial resistance. From 220 l of fermented broth from strain MM565M-173N2, we isolated four new antibiotics by gel filtration and HPLC, designated as sealutomicins A (1.8 mg), B (1.5 mg), C (0.8 mg), and D (0.8 mg). Their structures were determined from MS, NMR, and CD spectra. Sealutomicin A was found to be a new enediyne antibiotic, while sealutomicins B-D were aromatized products from sealutomicin A. Sealutomicin A showed strong antibacterial activity (MIC 0.05-0.2 μg ml-1) against CRE.
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Affiliation(s)
- Masayuki Igarashi
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan.
| | - Ryuichi Sawa
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan.
| | - Maya Umekita
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Masaki Hatano
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Rie Arisaka
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Chigusa Hayashi
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Yoshimasa Ishizaki
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo, 141-0021, Japan
| | - Masato Suzuki
- Antimicrobial Resistance Research Center, National Institute of Infectious Diseases, 4-2-1 Aoba-cho, Higashimurayama-shi, Tokyo, 189-0002, Japan
| | - Chiaki Kato
- Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka City, Kanagawa, 237-0061, Japan
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29
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Adhikari A, Shen B, Rader C. Challenges and Opportunities to Develop Enediyne Natural Products as Payloads for Antibody-Drug Conjugates. Antib Ther 2021; 4:1-15. [PMID: 33554043 PMCID: PMC7850032 DOI: 10.1093/abt/tbab001] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Calicheamicin, the payload of the antibody-drug-conjugates (ADCs) gemtuzumab ozogamicin (Mylotarg®) and inotuzumab ozogamicin (Besponsa®), belongs to the class of enediyne natural products. Since the isolation and structural determination of the neocarzinostatin chromophore in 1985, the enediynes have attracted considerable attention for their value as DNA damaging agents in cancer chemotherapy. Due to their non-discriminatory cytotoxicity towards both cancer and healthy cells, the clinical utilization of enediyne natural products relies on conjugation to an appropriate delivery system, such as an antibody. Here we review the current landscape of enediynes as payloads of first-generation and next-generation ADCs.
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Affiliation(s)
- Ajeeth Adhikari
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA.,Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL, USA
| | - Ben Shen
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL, USA.,Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, USA.,Natural Products Discovery Center at Scripps Research, The Scripps Research Institute, Jupiter, FL, USA
| | - Christoph Rader
- Department of Immunology and Microbiology, The Scripps Research Institute, Jupiter, FL, USA
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30
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Wang W, Lu H, Zhang M, Ma H, Cheng X, Ding Y, Hu A. Synthesis of maleimide-based enediynes with cyclopropane moieties for enhanced cytotoxicity under normoxic and hypoxic conditions. J Mater Chem B 2021; 9:4502-4509. [PMID: 34019610 DOI: 10.1039/d1tb00142f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Myers-Saito cycloaromatization (MSC) is the working mechanism of many natural enediyne antibiotics with high antitumor potency. However, the presence of the equilibrium between diradical and zwitterionic intermediates in MSC severely hinders further improvement in cytotoxicity toward tumor cells. To this end, a series of maleimide-based enediynes with cyclopropane moieties were synthesized for enhanced cytotoxicity toward tumor cells. By taking advantage of radical clock reactions, the diradical intermediates generated from MSC would rearrange to new diradicals with much longer separation and weaker interactions between two radical centers. The computational study suggested a low energy barrier (4.4 kcal mol-1) for the radical rearrangement through the cyclopropane ring-opening process. Thermolysis experiments confirmed that this radical rearrangement results in the formation of a new diradical intermediate, followed by abstracting hydrogen atoms from 1,4-cyclohexadiene. Interestingly, the DNA cleavage ability and cytotoxicity of enediynes were significantly enhanced after the introduction of cyclopropane moieties. In addition, these maleimide-based enediynes exhibited a similar cytotoxicity under hypoxic conditions to that under normoxic conditions, which is beneficial for treating solid tumors where hypoxic environments frequently lead to deteriorated efficiency of many antitumor drugs. Docking studies indicated that the diradical intermediate was located between the minor groove of DNA with a binding energy of -7.40 kcal mol-1, which is in favor of intracellular DNA damage, and thereby inducing cell death via an apoptosis pathway as suggested by immunofluorescence analysis.
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Affiliation(s)
- Wenbo Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Xiaoyu Cheng
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric Materials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.
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31
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Manda JN, Butler BB, Aponick A. Synthesis and Biological Evaluation of the Southern Hemisphere of Spirastrellolide A and Analogues. J Org Chem 2020; 85:13694-13709. [PMID: 33111529 DOI: 10.1021/acs.joc.0c01867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis and biological evaluation of truncated spirastrellolide A analogues comprised of the southern hemisphere against protein phosphatase 2A are described. A convergent synthesis was designed featuring two gold-catalyzed cyclization reactions, specifically, a dehydrative cyclization of monoallylic diols for the synthesis of the tetrahydropyran (A-ring) and a regioselective spiroketalization for the efficient generation of the [6,6]-spiroketal (B, C-ring system). The synthesis of the southern hemisphere of spirastrellolide A was achieved involving the longest linear sequence of 19 steps. A total of eight spirastrellolide A analogues were synthesized, and preliminary PP2A enzyme assay inhibition studies were performed for the first time on analogues of the southern hemisphere. Several analogues showed inhibition, which is a positive indication and perhaps suggests that the unsaturated spiroketal fragment might be crucial to induce PP2A inhibition.
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Affiliation(s)
- Jagadeesh Nagendra Manda
- Florida Center for Heterocyclic Compounds and Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Barry B Butler
- Florida Center for Heterocyclic Compounds and Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
| | - Aaron Aponick
- Florida Center for Heterocyclic Compounds and Department of Chemistry, University of Florida, Gainesville, Florida 32611, United States
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32
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Cohen DR, Townsend CA. C-N-Coupled Metabolites Yield Insights into Dynemicin A Biosynthesis. Chembiochem 2020; 21:2137-2142. [PMID: 32198800 PMCID: PMC7685002 DOI: 10.1002/cbic.202000177] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Indexed: 11/08/2022]
Abstract
The biosynthesis of the three structural subclasses of enediyne antitumor antibiotics remains largely unknown beyond a common C16 -hexaene precursor. For the anthraquinone-fused subtype, however, an unexpected iodoanthracene γ-thiolactone was established to be a mid-pathway intermediate to dynemicin A. Having deleted a putative flavin-dependent oxidoreductase from the dynemicin biosynthetic gene cluster, we can now report four metabolites that incorporate the iodoanthracene and reveal the formation of the C-N bond linking the anthraquinone and enediyne halves emblematic of this structural subclass. The coupling of an aryl iodide and an amine is familiar from organometallic chemistry, but has little or no precedent in natural product biosynthesis. These metabolites suggest further that enediyne formation occurs early in the overall biosynthesis, and that even earlier events might convert the C16 -hexaene to a common C15 intermediate that partitions to enediyne and anthraquinone building blocks for the heterodimerization.
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Affiliation(s)
- Douglas R Cohen
- Department of Chemistry, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD, 21218, USA
| | - Craig A Townsend
- Department of Chemistry, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD, 21218, USA
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Adhikari A, Teijaro CN, Yan X, Chang CY, Gui C, Liu YC, Crnovcic I, Yang D, Annaval T, Rader C, Shen B. Characterization of TnmH as an O-Methyltransferase Revealing Insights into Tiancimycin Biosynthesis and Enabling a Biocatalytic Strategy To Prepare Antibody-Tiancimycin Conjugates. J Med Chem 2020; 63:8432-8441. [PMID: 32658465 DOI: 10.1021/acs.jmedchem.0c00799] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The enediynes are among the most cytotoxic molecules known, and their use as anticancer drugs has been successfully demonstrated by targeted delivery. Clinical advancement of the anthraquinone-fused enediynes has been hindered by their low titers and lack of functional groups to enable the preparation of antibody-drug conjugates (ADCs). Here we report biochemical and structural characterization of TnmH from the tiancimycin (TNM) biosynthetic pathway, revealing that (i) TnmH catalyzes regiospecific methylation at the C-7 hydroxyl group, (ii) TnmH exhibits broad substrate promiscuity toward hydroxyanthraquinones and S-alkylated SAM analogues and catalyzes efficient installation of reactive alkyl handles, (iii) the X-ray crystal structure of TnmH provides the molecular basis to account for its broad substrate promiscuity, and (iv) TnmH as a biocatalyst enables the development of novel conjugation strategies to prepare antibody-TNM conjugates. These findings should greatly facilitate the construction and evaluation of antibody-TNM conjugates as next-generation ADCs for targeted chemotherapy.
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Chen H, Li B, Zhang M, Lu H, Wang Y, Wang W, Ding Y, Hu A. Preparation of Maleimide‐Based Enediynes with Propargyl Ester for Efficient Tumor Cell Suppression. ChemistrySelect 2020. [DOI: 10.1002/slct.202001282] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Huimin Chen
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yue Wang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Wenbo Wang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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35
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Wang Y, Li B, Zhang M, Lu H, Chen H, Wang W, Ding Y, Hu A. Preparation and antitumor applications of asymmetric propargyl amide maleimide based enediyne antibiotics. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131242] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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36
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Saha M, Das AR. Nanocrystalline ZnO: A Competent and Reusable Catalyst for the Preparation of Pharmacology Relevant Heterocycles in the Aqueous Medium. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346107666200218122718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
:Nanoparticle catalyzed synthesis is a green and convenient method to achieve most of the chemical transformations in water or other green solvents. Nanoparticle ensures an easy isolation process of catalyst as well as products from the reaction mixture avoiding the hectic work up procedure. Zinc oxide is a biocompatible, environmentally benign and economically viable nanocatalyst with effectivity comparable to the other metal nanocatalyst employed in several reaction strategies. This review mainly focuses on the recent applications of zinc oxide in the synthesis of biologically important heterocyclic molecules under sustainable reaction conditions.:Application of zinc oxide in organic synthesis: Considering the achievable advantages of this nanocatalyst, presently several research groups are paying attention in anchoring zincoxide or its modified structure in several types of organic conversions e.g. multicomponent reactions, ligand-free coupling reactions, cycloaddition reaction, etc. The advantages and limitations of this nanocatalyst are also demonstrated. The present study aims to highlight the recent multifaceted applications of ZnO towards the synthesis of diverse heterocyclic motifs. Being a promising biocompatible nanoparticle, this catalyst has an important contribution in the fields of synthetic chemistry and medicinal chemistry.
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Affiliation(s)
- Moumita Saha
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
| | - Asish R. Das
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
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Genome shuffling based on different types of ribosome engineering mutants for enhanced production of 10-membered enediyne tiancimycin-A. Appl Microbiol Biotechnol 2020; 104:4359-4369. [PMID: 32236679 DOI: 10.1007/s00253-020-10583-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/15/2020] [Accepted: 03/23/2020] [Indexed: 12/21/2022]
Abstract
Tiancimycin-A (TNM-A) is an anthraquinone-fused ten-membered enediyne produced by Streptomyces sp. CB03234, which is very promising for the development of anticancer antibody-drug conjugates (ADCs). To improve the titer of TNM-A, we have generated high-producing mutants CB03234-S and CB03234-R through ribosome engineering, but still not sufficient for pilot production of TNM-A. As the follow-up work, gentamycin-induced ribosome engineering was further adopted here to generate the mutant CB03234-G, which produced similar level of TNM-A as in CB03234-S and CB03234-R. Benefiting from the distinct antibiotic resistances of three ribosome engineering mutants, genome shuffling between any two of them was respectively carried out, and finally obtained the recombinant CB03234-GS26. Under optimal conditions, CB03234-GS26 produced 40.6 ± 1.0 mg/L TNM-A in shaking flasks and 20.8 ± 0.4 mg/L in a scaled-up 30-L fermentor. Comparing with the parental high-producing mutants, the over 1.6-fold titer improvement of CB03234-GS26 in fermentor was more promising for pilot production of TNM-A. Besides the distinctive morphological features, genetic characterization revealed that CB03234-GS26 possessed 1.8 kb rsmG related deletion just the same as CB03234-S, but no mutation was found in rpsL. Subsequent knockouts proved that rsmG was unrelated to titer improvement of TNM-A, which implied other genomic variations and mechanisms rather than ribosome engineering to enhance the biosynthesis of TNM-A. Therefore, CB03234-GS26 provided a basis to locate potential novel genetic targets, and explore the interactions between complex metabolic network and TNM biosynthetic pathway, which shall promote future construction of high-yielding systems for TNM-A and other anthraquinone-fused enediynes.Key Points •United genome shuffling and ribosome engineering help further strain improvement. •CB03234-GS26 with improved titer is practical for the pilot production of TNM-A. •Enhanced TNM-A production should attribute to novel genetic features/mechanisms.
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Abstract
The use of an acetylene (ethynyl) group in medicinal chemistry coincides with the launch of the Journal of Medicinal Chemistry in 1959. Since then, the acetylene group has been broadly exploited in drug discovery and development. As a result, it has become recognized as a privileged structural feature for targeting a wide range of therapeutic target proteins, including MAO, tyrosine kinases, BACE1, steroid receptors, mGlu5 receptors, FFA1/GPR40, and HIV-1 RT. Furthermore, a terminal alkyne functionality is frequently introduced in chemical biology probes as a click handle to identify molecular targets and to assess target engagement. This Perspective is divided into three parts encompassing: (1) the physicochemical properties of the ethynyl group, (2) the advantages and disadvantages of the ethynyl group in medicinal chemistry, and (3) the impact of the ethynyl group on chemical biology approaches.
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Affiliation(s)
- Tanaji T Talele
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York 11439, United States
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39
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Nicolaou KC, Das D, Lu Y, Rout S, Pitsinos EN, Lyssikatos J, Schammel A, Sandoval J, Hammond M, Aujay M, Gavrilyuk J. Total Synthesis and Biological Evaluation of Tiancimycins A and B, Yangpumicin A, and Related Anthraquinone-Fused Enediyne Antitumor Antibiotics. J Am Chem Soc 2020; 142:2549-2561. [DOI: 10.1021/jacs.9b12522] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- K. C. Nicolaou
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Dipendu Das
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Yong Lu
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Subhrajit Rout
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Emmanuel N. Pitsinos
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Laboratory of Natural Products Synthesis & Bioorganic Chemistry, Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research “Demokritos”, 153 10 Agia Paraskevi, Greece
| | - Joseph Lyssikatos
- Abbvie Stemcentrx, LLC, 450 East Jamie Court, South San Francisco, California 94080, United States
| | - Alexander Schammel
- Abbvie Stemcentrx, LLC, 450 East Jamie Court, South San Francisco, California 94080, United States
| | - Joseph Sandoval
- Abbvie Stemcentrx, LLC, 450 East Jamie Court, South San Francisco, California 94080, United States
| | - Mikhail Hammond
- Abbvie Stemcentrx, LLC, 450 East Jamie Court, South San Francisco, California 94080, United States
| | - Monette Aujay
- Abbvie Stemcentrx, LLC, 450 East Jamie Court, South San Francisco, California 94080, United States
| | - Julia Gavrilyuk
- Abbvie Stemcentrx, LLC, 450 East Jamie Court, South San Francisco, California 94080, United States
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40
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Low ZJ, Ma GL, Tran HT, Zou Y, Xiong J, Pang L, Nuryyeva S, Ye H, Hu JF, Houk KN, Liang ZX. Sungeidines from a Non-canonical Enediyne Biosynthetic Pathway. J Am Chem Soc 2020; 142:1673-1679. [PMID: 31922407 DOI: 10.1021/jacs.9b10086] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the genome-guided discovery of sungeidines, a class of microbial secondary metabolites with unique structural features. Despite evolutionary relationships with dynemicin-type enediynes, the sungeidines are produced by a biosynthetic gene cluster (BGC) that exhibits distinct differences from known enediyne BGCs. Our studies suggest that the sungeidines are assembled from two octaketide chains that are processed differently than those of the dynemicin-type enediynes. The biosynthesis also involves a unique activating sulfotransferase that promotes a dehydration reaction. The loss of genes, including a putative epoxidase gene, is likely to be the main cause of the divergence of the sungeidine pathway from other canonical enediyne pathways. The findings disclose the surprising evolvability of enediyne pathways and set the stage for characterizing the intriguing enzymatic steps in sungeidine biosynthesis.
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Affiliation(s)
- Zhen Jie Low
- School of Biological Sciences , Nanyang Technological University , 637551 Singapore
| | - Guang-Lei Ma
- School of Biological Sciences , Nanyang Technological University , 637551 Singapore
| | - Hoa Thi Tran
- School of Biological Sciences , Nanyang Technological University , 637551 Singapore
| | - Yike Zou
- Department of Chemistry & Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Juan Xiong
- School of Biological Sciences , Nanyang Technological University , 637551 Singapore.,School of Pharmacy , Fudan University , Shanghai 200433 , China
| | - Limei Pang
- School of Biological Sciences , Nanyang Technological University , 637551 Singapore
| | - Selbi Nuryyeva
- Department of Chemistry & Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Hong Ye
- School of Biological Sciences , Nanyang Technological University , 637551 Singapore
| | - Jin-Feng Hu
- School of Pharmacy , Fudan University , Shanghai 200433 , China
| | - K N Houk
- Department of Chemistry & Biochemistry , University of California , Los Angeles , California 90095 , United States
| | - Zhao-Xun Liang
- School of Biological Sciences , Nanyang Technological University , 637551 Singapore
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41
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Hifnawy MS, Fouda MM, Sayed AM, Mohammed R, Hassan HM, AbouZid SF, Rateb ME, Keller A, Adamek M, Ziemert N, Abdelmohsen UR. The genus Micromonospora as a model microorganism for bioactive natural product discovery. RSC Adv 2020; 10:20939-20959. [PMID: 35517724 PMCID: PMC9054317 DOI: 10.1039/d0ra04025h] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 05/28/2020] [Indexed: 11/21/2022] Open
Abstract
This review covers the development of the genus Micromonospora as a model for natural product research and the timeline of discovery progress from the classical bioassay-guided approaches through the application of genome mining and genetic engineering techniques that target specific products. It focuses on the reported chemical structures along with their biological activities and the synthetic and biosynthetic studies they have inspired. This survey summarizes the extraordinary biosynthetic diversity that can emerge from a widely distributed actinomycete genus and supports future efforts to explore under-explored species in the search for novel natural products. We explore the genus Micromonospora as a model for natural product research and the discovery progress from the classical bioassay-guided approaches through to the application of genome mining and genetic engineering techniques that target specific products.![]()
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Li B, Zhang M, Lu H, Ma H, Wang Y, Chen H, Ding Y, Hu A. Coordination‐Accelerated Radical Formation from Acyclic Enediynes for Tumor Cell Suppression. Chem Asian J 2019; 14:4352-4357. [DOI: 10.1002/asia.201901182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 10/21/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Baojun Li
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Mengsi Zhang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Haotian Lu
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Hailong Ma
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yue Wang
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Huimin Chen
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yun Ding
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Aiguo Hu
- Shanghai Key Laboratory of Advanced Polymeric MaterialsSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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43
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Steele AD, Teijaro CN, Yang D, Shen B. Leveraging a large microbial strain collection for natural product discovery. J Biol Chem 2019; 294:16567-16576. [PMID: 31570525 DOI: 10.1074/jbc.rev119.006514] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Throughout history, natural products have significantly contributed to the discovery of novel chemistry, drug leads, and tool molecules to probe and address complex challenges in biology and medicine. Recent microbial genome sequencing efforts have uncovered many microbial biosynthetic gene clusters without an associated natural product. This means that the natural products isolated to date do not fully reflect the biosynthetic potential of microbial strains. This observation has rejuvenated the natural product community and inspired a return to microbial strain collections. Mining large microbial strain collections with the most current technologies in genome sequencing, bioinformatics, and high-throughput screening techniques presents new opportunities in natural product discovery. In this review, we report on the newly expanded microbial strain collection at The Scripps Research Institute, which represents one of the largest and most diverse strain collections in the world. Two complementary approaches, i.e. structure-centric and function-centric, are presented here to showcase how to leverage a large microbial strain collection for natural product discovery and to address challenges and harness opportunities for future efforts. Highlighted examples include the discovery of alternative producers of known natural products with superior growth characteristics and high titers, novel analogs of privileged scaffolds, novel natural products, and new activities of known and new natural products. We anticipate that this large microbial strain collection will facilitate the discovery of new natural products for many applications.
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Affiliation(s)
- Andrew D Steele
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458
| | | | - Dong Yang
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458.,Natural Products Library Initiative, The Scripps Research Institute, Jupiter, Florida 33458
| | - Ben Shen
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida 33458 .,Natural Products Library Initiative, The Scripps Research Institute, Jupiter, Florida 33458.,Department of Molecular Medicine, The Scripps Research Institute, Jupiter, Florida 33458
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44
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Lang J, Brabec J, Saitow M, Pittner J, Neese F, Demel O. Perturbative triples correction to domain-based local pair natural orbital variants of Mukherjee's state specific coupled cluster method. Phys Chem Chem Phys 2019; 21:5022-5038. [PMID: 30762044 DOI: 10.1039/c8cp03577f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article we report an implementation of the perturbative triples correction to Mukherjee's state-specific multireference coupled cluster method based on the domain-based pair natural orbital approach (DLPNO-MkCC). We tested the performance of DLPNO-MkCCSD(T) in calculations involving tetramethyleneethane and isomers of naphthynes. These tests show that more than 97% of triples energy was recovered with respect to the canonical MkCCSD(T) method, which together with the DLPNO-MkCCSD part accounts for about 99.70-99.85% of the total correlation energy. The applicability of the method was demonstrated on calculations of singlet-triplet gaps for several large systems: triangulene, dynemicin A, and a beryllium complex.
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Affiliation(s)
- Jakub Lang
- J. Heyrovský Institute of Physical Chemistry, v.v.i., Academy of Sciences of the Czech Republic, Dolejškova 3, 18223 Prague 8, Czech Republic.
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45
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Scott T, Nieman R, Luxon A, Zhang B, Lischka H, Gagliardi L, Parish CA. A Multireference Ab Initio Study of the Diradical Isomers of Pyrazine. J Phys Chem A 2019; 123:2049-2057. [DOI: 10.1021/acs.jpca.8b12440] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thais Scott
- Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond Virginia 23713, United States
- Department of Chemistry, Chemical Theory Center and the Minnesota Supercomputing Institute, The University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Reed Nieman
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Adam Luxon
- Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond Virginia 23713, United States
| | - Boyi Zhang
- Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond Virginia 23713, United States
| | - Hans Lischka
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
- School of Pharmaceutical Sciences and Technology, Tianjin University, Tianjin, 300072 P.R. China
| | - Laura Gagliardi
- Department of Chemistry, Chemical Theory Center and the Minnesota Supercomputing Institute, The University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Carol A. Parish
- Department of Chemistry, Gottwald Center for the Sciences, University of Richmond, Richmond Virginia 23713, United States
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46
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Zhuang Z, Jiang C, Zhang F, Huang R, Yi L, Huang Y, Yan X, Duan Y, Zhu X. Streptomycin-induced ribosome engineering complemented with fermentation optimization for enhanced production of 10-membered enediynes tiancimycin-A and tiancimycin-D. Biotechnol Bioeng 2019; 116:1304-1314. [PMID: 30712262 DOI: 10.1002/bit.26944] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 01/18/2019] [Accepted: 01/30/2019] [Indexed: 01/01/2023]
Abstract
Tiancimycins (TNMs) are a group of 10-membered anthraquinone-fused enediynes, newly discovered from Streptomyces sp. CB03234. Among them, TNM-A and TNM-D have exhibited excellent antitumor performances and could be exploited as very promising warheads for the development of anticancer antibody-drug conjugates (ADCs). However, their low titers, especially TNM-D, have severely limited following progress. Therefore, the streptomycin-induced ribosome engineering was adopted in this work for strain improvement of CB03234, and a TNMs high producer S. sp. CB03234-S with the K43N mutation at 30S ribosomal protein S12 was successfully screened out. Subsequent media optimization revealed the essential effects of iodide and copper ion on the production of TNMs, while the substitution of nitrogen source could evidently promote the accumulation of TNM-D, and the ratio of produced TNM-A and TNM-D was responsive to the change of carbon and nitrogen ratio in the medium. Further amelioration of the pH control in scaled up 25 L fermentation increased the average titers of TNM-A and TNM-D up to 13.7 ± 0.3 and 19.2 ± 0.4 mg/L, respectively. The achieved over 45-fold titer improvement of TNM-A, and 109-fold total titer improvement of TNM-A and TNM-D enabled the efficient purification of over 200 mg of each target molecule from 25 L fermentation. Our efforts have demonstrated a practical strategy for titer improvement of anthraquinone-fused enediynes and set up a solid base for the pilot scale production and preclinical studies of TNMs to expedite the future development of anticancer ADC drugs.
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Affiliation(s)
- Zhoukang Zhuang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China
| | - Chengzhou Jiang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China
| | - Fan Zhang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China
| | - Rong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China
| | - Liwei Yi
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, China
| | - Xiaohui Yan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, China
| | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, China.,Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha, China
| | - Xiangcheng Zhu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, China.,National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, China.,Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery, Changsha, China
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47
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Abstract
Natural products (NPs) are important sources of clinical drugs due to their structural diversity and biological prevalidation. However, the structural complexity of NPs leads to synthetic difficulties, unfavorable pharmacokinetic profiles, and poor drug-likeness. Structural simplification by truncating unnecessary substructures is a powerful strategy for overcoming these limitations and improving the efficiency and success rate of NP-based drug development. Herein, we will provide a comprehensive review of the structural simplification of NPs with a focus on design strategies, case studies, and new technologies. In particular, a number of successful examples leading to marketed drugs or drug candidates will be discussed in detail to illustrate how structural simplification is applied in lead optimization of NPs.
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Affiliation(s)
- Shengzheng Wang
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai , 200433 , P.R. China.,Department of Medicinal Chemistry, School of Pharmacy , Fourth Military Medical University , 169 Changle West Road , Xi'an , 710032 , P.R. China
| | - Guoqiang Dong
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai , 200433 , P.R. China
| | - Chunquan Sheng
- Department of Medicinal Chemistry, School of Pharmacy , Second Military Medical University , 325 Guohe Road , Shanghai , 200433 , P.R. China
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48
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Streitferdt V, Haindl MH, Hioe J, Morana F, Renzi P, von Rekowski F, Zimmermann A, Nardi M, Zeitler K, Gschwind RM. Unprecedented Mechanism of an Organocatalytic Route to Conjugated Enynes with a Junction to Cyclic Nitronates. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Verena Streitferdt
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Michael H. Haindl
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Johnny Hioe
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Fabio Morana
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Polyssena Renzi
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Felicitas von Rekowski
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Alexander Zimmermann
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Martina Nardi
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
| | - Kirsten Zeitler
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
- Institute of Organic Chemistry University of Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Ruth M. Gschwind
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93053 Regensburg Germany
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49
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Yaragorla S, Rajesh P. Regiospecific formal [3 + 2] annulation of tert-propargyl alcohols with acyclic 1,3-diketones via the cycloisomerization of homoallenyl ketones. Org Biomol Chem 2019; 17:1924-1928. [DOI: 10.1039/c8ob02158a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A one-pot, regiospecific synthesis of dihydrofurans bearing a quaternary centre is developed from the formal [3 + 2] annulation of tert-propargyl alcohols and 1,3-diketones through the SN2I mechanism to form homoallenyl ketone and a subsequent cycloisomerization reaction.
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Affiliation(s)
| | - P. Rajesh
- School of Chemistry
- University of Hyderabad
- India
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50
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Challenges and opportunities for natural product discovery, production, and engineering in native producers versus heterologous hosts. J Ind Microbiol Biotechnol 2018; 46:433-444. [PMID: 30426283 DOI: 10.1007/s10295-018-2094-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Accepted: 10/19/2018] [Indexed: 10/27/2022]
Abstract
Recent advances and emerging technologies for metabolic pathway engineering and synthetic biology have transformed the field of natural product discovery, production, and engineering. Despite these advancements, there remain many challenges in understanding how biosynthetic gene clusters are silenced or activated, including changes in the transcription of key biosynthetic and regulatory genes. This knowledge gap is highlighted by the success and failed attempts of manipulating regulatory genes within biosynthetic gene clusters in both native producers and heterologous hosts. These complexities make the choice of native producers versus heterologous hosts, fermentation medium, and supply of precursors crucial factors in achieving the production of the target natural products and engineering designer analogs. Nature continues to serve as inspiration for filling the knowledge gaps and developing new research strategies. By exploiting the evolutionary power of nature, alternative producers, with the desired genetic amenability and higher titers of the target natural products, and new strains, harboring gene clusters that encode evolutionary optimized congeners of the targeted natural product scaffolds, can be discovered. These newly identified strains can serve as an outstanding biotechnology platform for the engineered production of sufficient quantities of the target natural products and their analogs, enabling biosynthetic studies and potential therapeutic applications. These challenges and opportunities are showcased herein using fredericamycin, iso-migrastatin, platencin and platensimycin, the enediynes of C-1027, tiancimycin, and yangpumicin, and the leinamycin family of natural products.
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