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Karadkhelkar NM, Gupta P, Barasa L, Chilamakuri R, Hlordzi CK, Acharekar N, Agarwal S, Chen ZS, Yoganathan S. Chemical Derivatization Leads to the Discovery Of Novel Analogs of Azotochelin, a Natural Siderophore, as Promising Anticancer Agents. ChemMedChem 2024; 19:e202300715. [PMID: 38598189 DOI: 10.1002/cmdc.202300715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 03/21/2024] [Accepted: 04/08/2024] [Indexed: 04/11/2024]
Abstract
Siderophores are structurally unique medicinal natural products and exhibit considerable therapeutic potential. Herein, we report the design and synthesis of azotochelin, a natural siderophore, and an extensive library of azotochelin analogs and their anticancer properties. We modified the carboxylic acid and the aromatic ring of azotochelin using various chemical motifs. We evaluated the cytotoxicity of the compounds against six different cancer cell lines (KB-3-1, SNB-19, MCF-7, K-562, SW-620, and NCI-H460) and a non-cancerous cell line (HEK-293). Among the twenty compounds tested, the IC50 values of nine compounds (14, 32, 35-40, and 54) were between 0.7 and 2.0 μM against a lung cancer cell line (NCI-H460). Moreover, several compounds showed good cytotoxicity profile (IC50 <10 μM) against the tested cancer cell lines. The flow cytometry analysis showed that compounds 36 and 38 induced apoptosis in NCI-H460 in a dose-dependent manner. The cell cycle analysis indicated that compounds 36 and 38 significantly arrested the cell cycle at the S phase to block cancer cell proliferation in the NCI-H460 cell line. The study has produced various novel azotochelin analogs that are potentially effective anticancer agents and lead compounds for further synthetic and medicinal chemistry exploration.
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Affiliation(s)
- Nishant M Karadkhelkar
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439 (S.Y.)
- Current affiliation: The Scripps Research Institute, 10550 N Torrey Pines Rd., La Jolla, CA, 92037
| | - Pranav Gupta
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439 (S.Y.)
| | - Leonard Barasa
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439 (S.Y.)
- Current affiliation: Department of Biochemistry and Molecular Biotechnology, University of Massachusetts Medical School, Worcester, MA, 01605
| | - Rameswari Chilamakuri
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439 (S.Y.)
| | - Christopher K Hlordzi
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439 (S.Y.)
| | - Nikita Acharekar
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439 (S.Y.)
| | - Saurabh Agarwal
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439 (S.Y.)
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439 (S.Y.)
| | - Sabesan Yoganathan
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, 8000 Utopia Parkway, Queens, NY, 11439 (S.Y.)
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Wang CY, Hu JQ, Wang DG, Li YZ, Wu C. Recent advances in discovery and biosynthesis of natural products from myxobacteria: an overview from 2017 to 2023. Nat Prod Rep 2024; 41:905-934. [PMID: 38390645 DOI: 10.1039/d3np00062a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Covering: 2017.01 to 2023.11Natural products biosynthesized by myxobacteria are appealing due to their sophisticated chemical skeletons, remarkable biological activities, and intriguing biosynthetic enzymology. This review aims to systematically summarize the advances in the discovery methods, new structures, and bioactivities of myxobacterial NPs reported in the period of 2017-2023. In addition, the peculiar biosynthetic pathways of several structural families are also highlighted.
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Affiliation(s)
- Chao-Yi Wang
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
| | - Jia-Qi Hu
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
| | - De-Gao Wang
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
| | - Yue-Zhong Li
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
| | - Changsheng Wu
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, 266237 Qingdao, P.R. China.
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Puja H, Mislin GLA, Rigouin C. Engineering Siderophore Biosynthesis and Regulation Pathways to Increase Diversity and Availability. Biomolecules 2023; 13:959. [PMID: 37371539 PMCID: PMC10296737 DOI: 10.3390/biom13060959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/23/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023] Open
Abstract
Siderophores are small metal chelators synthesized by numerous organisms to access iron. These secondary metabolites are ubiquitously present on Earth, and because their production represents the main strategy to assimilate iron, they play an important role in both positive and negative interactions between organisms. In addition, siderophores are used in biotechnology for diverse applications in medicine, agriculture and the environment. The generation of non-natural siderophore analogs provides a new opportunity to create new-to-nature chelating biomolecules that can offer new properties to expand applications. This review summarizes the main strategies of combinatorial biosynthesis that have been used to generate siderophore analogs. We first provide a brief overview of siderophore biosynthesis, followed by a description of the strategies, namely, precursor-directed biosynthesis, the design of synthetic or heterologous pathways and enzyme engineering, used in siderophore biosynthetic pathways to create diversity. In addition, this review highlights the engineering strategies that have been used to improve the production of siderophores by cells to facilitate their downstream utilization.
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Affiliation(s)
- Hélène Puja
- CNRS-UMR7242, Biotechnologie et Signalisation Cellulaire, 300 Bld Sébastien Brant, 67412 Illkirch, France (G.L.A.M.)
- Institut de Recherche de l’Ecole de Biotechnologie de Strasbourg (IREBS), Université de Strasbourg, 300 Bld Sébastien Brant, 67412 Illkirch, France
| | - Gaëtan L. A. Mislin
- CNRS-UMR7242, Biotechnologie et Signalisation Cellulaire, 300 Bld Sébastien Brant, 67412 Illkirch, France (G.L.A.M.)
- Institut de Recherche de l’Ecole de Biotechnologie de Strasbourg (IREBS), Université de Strasbourg, 300 Bld Sébastien Brant, 67412 Illkirch, France
| | - Coraline Rigouin
- CNRS-UMR7242, Biotechnologie et Signalisation Cellulaire, 300 Bld Sébastien Brant, 67412 Illkirch, France (G.L.A.M.)
- Institut de Recherche de l’Ecole de Biotechnologie de Strasbourg (IREBS), Université de Strasbourg, 300 Bld Sébastien Brant, 67412 Illkirch, France
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Winand L, Lernoud L, Meyners SA, Kuhr K, Hiller W, Nett M. Myxococcus xanthus as Host for the Production of Benzoxazoles. Chembiochem 2023; 24:e202200635. [PMID: 36484355 DOI: 10.1002/cbic.202200635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/09/2022] [Accepted: 12/09/2022] [Indexed: 12/13/2022]
Abstract
Benzoxazoles are important structural motifs in pharmaceutical drugs. Here, we present the heterologous production of 3-hydroxyanthranilate-derived benzoxazoles in the host bacterium Myxococcus xanthus following the expression of two genes from the nataxazole biosynthetic gene cluster of Streptomyces sp. Tü 6176. The M. xanthus expression strain achieved a benzoxazole titer of 114.6±7.4 mg L-1 upon precursor supplementation, which is superior to other bacterial production systems. Crosstalk between the heterologously expressed benzoxazole pathway and the endogenous myxochelin pathway led to the combinatorial biosynthesis of benzoxazoles featuring a 2,3-dihydroxybenzoic acid (2,3-DHBA) building block. Subsequent in vitro studies confirmed that this crosstalk is not only due to the availability of 2,3-DHBA in M. xanthus, rather, it is promoted by the adenylating enzyme MxcE from the myxochelin pathway, which contributes to the activation of aryl carboxylic acids and delivers them to benzoxazole biosynthesis.
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Affiliation(s)
- Lea Winand
- Department of Biochemical and Chemical Engineering, Laboratory of Technical Biology, TU Dortmund University, Emil-Figge-Str. 66, 44227, Dortmund, Germany
| | - Lucia Lernoud
- Department of Biochemical and Chemical Engineering, Laboratory of Technical Biology, TU Dortmund University, Emil-Figge-Str. 66, 44227, Dortmund, Germany
| | - Saskia Anna Meyners
- Department of Biochemical and Chemical Engineering, Laboratory of Technical Biology, TU Dortmund University, Emil-Figge-Str. 66, 44227, Dortmund, Germany
| | - Katharina Kuhr
- Department of Biochemical and Chemical Engineering, Laboratory of Technical Biology, TU Dortmund University, Emil-Figge-Str. 66, 44227, Dortmund, Germany
| | - Wolf Hiller
- Department of Chemistry and Chemical Biology, NMR Laboratory, TU Dortmund University, Otto-Hahn-Str. 4a, 44227, Dortmund, Germany
| | - Markus Nett
- Department of Biochemical and Chemical Engineering, Laboratory of Technical Biology, TU Dortmund University, Emil-Figge-Str. 66, 44227, Dortmund, Germany
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Dey R, Dey S, Samadder A, Saxena AK, Nandi S. Natural Inhibitors against Potential Targets of Cyclooxygenase, Lipoxygenase and Leukotrienes. Comb Chem High Throughput Screen 2022; 25:2341-2357. [PMID: 34533441 DOI: 10.2174/1386207325666210917111847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 07/14/2021] [Accepted: 07/18/2021] [Indexed: 01/27/2023]
Abstract
BACKGROUND Cyclooxygenase (COX) and Lipoxygenase (LOX) enzymes catalyze the production of pain mediators like Prostaglandins (PGs) and Leukotrienes (LTs), respectively from arachidonic acid. INTRODUCTION The COX and LOX enzyme modulators are responsible for the major PGs and LTs mediated complications like asthma, osteoarthritis, rheumatoid arthritis, cancer, Alzheimer's disease, neuropathy and Cardiovascular Syndromes (CVS). Many synthetic Nonsteroidal Anti- Inflammatory Drugs (NSAIDs) used in the treatment have serious side effects like nausea, vomiting, hyperacidity, gastrointestinal ulcers, CVS, etc. Methods: The natural inhibitors of pain mediators have great acceptance worldwide due to fewer side effects on long-term uses. The present review is an extensive study of the advantages of plantbased vs synthetic inhibitors. RESULTS These natural COX and LOX inhibitors control inflammatory response without causing side-effect-related complicacy. CONCLUSION Therefore, the natural COX and LOX inhibitors may be used as alternative medicines for the management of pain and inflammation due to their less toxicity and resistivity.
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Affiliation(s)
- Rishita Dey
- Cytogenetics and Molecular Biology Lab., Department of Zoology, University of Kalyani, Kalyani, Nadia, 741235, India
| | - Sudatta Dey
- Cytogenetics and Molecular Biology Lab., Department of Zoology, University of Kalyani, Kalyani, Nadia, 741235, India
| | - Asmita Samadder
- Cytogenetics and Molecular Biology Lab., Department of Zoology, University of Kalyani, Kalyani, Nadia, 741235, India
| | - Anil Kumar Saxena
- Global Institute of Pharmaceutical Education and Research (Affiliated to Uttarakhand Technical University), Kashipur-244713, India
| | - Sisir Nandi
- Global Institute of Pharmaceutical Education and Research (Affiliated to Uttarakhand Technical University), Kashipur-244713, India
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A Disturbed Siderophore Transport Inhibits Myxobacterial Predation. Cells 2022; 11:cells11233718. [PMID: 36496980 PMCID: PMC9738627 DOI: 10.3390/cells11233718] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 11/11/2022] [Accepted: 11/15/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Understanding the intrinsic mechanisms of bacterial competition is a fundamental question. Iron is an essential trace nutrient that bacteria compete for. The most prevalent manner for iron scavenging is through the secretion of siderophores. Although tremendous efforts have focused on elucidating the molecular mechanisms of siderophores biosynthesis, export, uptake, and regulation of siderophores, the ecological aspects of siderophore-mediated competition are not well understood. METHODS We performed predation and bacterial competition assays to investigate the function of siderophore transport on myxobacterial predation. RESULTS Deletion of msuB, which encodes an iron chelate uptake ABC transporter family permease subunit, led to a reduction in myxobacterial predation and intracellular iron, but iron deficiency was not the predominant reason for the decrease in the predation ability of the ∆msuB mutant. We further confirmed that obstruction of siderophore transport decreased myxobacterial predation by investigating the function of a non-ribosomal peptide synthetase for siderophore biosynthesis, a TonB-dependent receptor, and a siderophore binding protein in M. xanthus. Our results showed that the obstruction of siderophores transport decreased myxobacterial predation ability through the downregulation of lytic enzyme genes, especially outer membrane vesicle (OMV)-specific proteins. CONCLUSIONS This work provides insight into the mechanism of siderophore-mediated competition in myxobacteria.
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Okoth DA, Hug JJ, Garcia R, Müller R. Discovery, Biosynthesis and Biological Activity of a Succinylated Myxochelin from the Myxobacterial Strain MSr12020. Microorganisms 2022; 10:microorganisms10101959. [PMID: 36296235 PMCID: PMC9611931 DOI: 10.3390/microorganisms10101959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/25/2022] [Accepted: 09/27/2022] [Indexed: 11/07/2022] Open
Abstract
Myxobacteria feature unique biological characteristics, including their capability to glide on the surface, undergo different multicellular developmental stages and produce structurally unique natural products such as the catecholate-type siderophores myxochelins A and B. Herein, we report the isolation, structure elucidation and a proposed biosynthesis of the new congener myxochelin B-succinate from the terrestrial myxobacterial strain MSr12020, featuring a succinyl decoration at its primary amine group. Myxochelin-B-succinate exhibited antibacterial growth inhibition and moderate cytotoxic activity against selected human cancer cell lines. This unique chemical modification of myxochelin B might provide interesting insights for future microbiological studies to understand the biological function and biosynthesis of secondary metabolite succinylation.
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Affiliation(s)
- Dorothy A. Okoth
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Helmholtz International Labs, Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Chemistry, School of Physical and Biological Sciences, Main campus, Maseno University, Maseno P.O. Box 333-40105, Kenya
| | - Joachim J. Hug
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Helmholtz International Labs, Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
| | - Ronald Garcia
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Helmholtz International Labs, Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
| | - Rolf Müller
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Helmholtz International Labs, Department of Microbial Natural Products, Campus E8 1, Saarland University, 66123 Saarbrücken, Germany
- Correspondence:
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Zhang Z, He X, Zhang X, Li D, Wu G, Liu Z, Niu C, Yang L, Song W, Li Z, Wang Z. Production of Multiple Talaroenamines from Penicillium malacosphaerulum via One-Pot/Two-Stage Precursor-Directed Biosynthesis. JOURNAL OF NATURAL PRODUCTS 2022; 85:2168-2176. [PMID: 35993848 DOI: 10.1021/acs.jnatprod.2c00394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nineteen new talaroenamine derivatives, talaroenamines F1-F19 (1-19), were isolated from the Yellow River wetland derived Penicillium malacosphaerulum HPU-J01 by use of a one-pot/two-stage precursor-directed biosynthesis approach. During this approach, the initial precursor p-methylaniline was first used as a carrier to capture the biologically synthesized cyclohexanedione to produce talaroenamine F, and then the other aniline derivatives were employed to replace the p-methylaniline fragment of talaroenamine F to generate the final products. LC-MS analysis showed that only four compounds (2, 8, 10, and 12) could be produced by the traditional precursor-directed biosynthesis in which the aniline precursors were added simultaneously. Compound 14 was cytotoxic against the K562 cell line with an IC50 value of 2.2 μM. This work demonstrated the one-pot/two-stage precursor-directed biosynthesis could improve substrate acceptance leading to the production of diverse talaroenamines.
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Affiliation(s)
- Zhenzhen Zhang
- School of Medicine, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Xueqian He
- School of Medicine, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Xiaomin Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Dehai Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao, 266003, People's Republic of China
| | - Guangwei Wu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, People's Republic of China
| | - Zhenzhen Liu
- School of Medicine, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Chao Niu
- School of Medicine, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Lanping Yang
- School of Medicine, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Wenting Song
- School of Medicine, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Zhanlin Li
- School of Medicine, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
| | - Zhenhui Wang
- School of Medicine, Henan Polytechnic University, Jiaozuo, 454000, People's Republic of China
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9
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Lee H, Abdildinova A, Cho YS, Cheon HG, Gong Y. A novel core skeleton design and synthesis of
N
‐alkyl‐1′‐(substituted sulfonyl)spiro[chromene‐2,4′‐piperidin]‐6‐amine derivatives as 5‐lipoxygenase inhibitors. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12520] [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)
- Hwa‐Sung Lee
- Innovative Drug Library Research Center, Department of Chemistry, College of Science Dongguk University Jung‐gu, Seoul Korea
| | - Aizhan Abdildinova
- Innovative Drug Library Research Center, Department of Chemistry, College of Science Dongguk University Jung‐gu, Seoul Korea
| | - Young Sik Cho
- Department of Pharmacology, Pharmaceutical College Keimyung University Dalseo‐Gu, Daegu Korea
| | - Hyae Gyeong Cheon
- Department of Pharmacology, College of Medicine Gachon University Yeonsu‐gu, Incheon Korea
| | - Young‐Dae Gong
- Innovative Drug Library Research Center, Department of Chemistry, College of Science Dongguk University Jung‐gu, Seoul Korea
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Inflammation, Fibrosis and Cancer: Mechanisms, Therapeutic Options and Challenges. Cancers (Basel) 2022; 14:cancers14030552. [PMID: 35158821 PMCID: PMC8833582 DOI: 10.3390/cancers14030552] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/15/2022] [Accepted: 01/17/2022] [Indexed: 01/09/2023] Open
Abstract
Uncontrolled inflammation is a salient factor in multiple chronic inflammatory diseases and cancers. In this review, we provided an in-depth analysis of the relationships and distinctions between uncontrolled inflammation, fibrosis and cancers, while emphasizing the challenges and opportunities of developing novel therapies for the treatment and/or management of these diseases. We described how drug delivery systems, combination therapy and the integration of tissue-targeted and/or pathways selective strategies could overcome the challenges of current agents for managing and/or treating chronic inflammatory diseases and cancers. We also recognized the value of the re-evaluation of the disease-specific roles of multiple pathways implicated in the pathophysiology of chronic inflammatory diseases and cancers-as well as the application of data from single-cell RNA sequencing in the success of future drug discovery endeavors.
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Wang DG, Niu L, Lin ZM, Wang JJ, Gao DF, Sui HY, Li YZ, Wu C. The Discovery and Biosynthesis of Nicotinic Myxochelins from an Archangium sp. SDU34. JOURNAL OF NATURAL PRODUCTS 2021; 84:2744-2748. [PMID: 34623817 DOI: 10.1021/acs.jnatprod.1c00524] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Myxobacteria are a prolific source of structurally diverse natural products, and one of the best-studied myxobacterial products is the siderophore myxochelin. Herein, we report two new compounds, myxochelins N (1) and O (2), that are nicotinic paralogs of myxochelin A, from the terrestrial myxobacterium Archangium sp. SDU34; 2 is functionalized with a rare 2-oxazolidinone. A precursor-feeding experiment implied that the biosynthesis of 1 or 2 was due to altered substrate specificity of the loading module of MxcE, which likely accepts nicotinic acid and benzoic acid instead of more conventional 2,3-dihydroxybenzoic acid. We also employed a phylogenomic approach to map the evolutionary relationships of the myxochelin biosynthetic gene clusters (BGCs) in all the available myxobacterial genomes, to pave the way for the future discovery of potentially hidden myxochelin derivatives. Although the biological function of 1 and 2 is unclear yet, this work underpins that even extensively studied BGCs in myxobacteria can still produce new chemistry.
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Affiliation(s)
- De-Gao Wang
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Luo Niu
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Zhao-Min Lin
- Institute of Medical Science, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250033, People's Republic of China
| | - Jing-Jing Wang
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Dong-Fang Gao
- Institute of Medical Science, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250033, People's Republic of China
| | - Hai-Yan Sui
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Yue-Zhong Li
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
| | - Changsheng Wu
- State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao 266237, People's Republic of China
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Frank NA, Széles M, Akone SH, Rasheed S, Hüttel S, Frewert S, Hamed MM, Herrmann J, Schuler SMM, Hirsch AKH, Müller R. Expanding the Myxochelin Natural Product Family by Nicotinic Acid Containing Congeners. Molecules 2021; 26:4929. [PMID: 34443518 PMCID: PMC8400222 DOI: 10.3390/molecules26164929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/05/2021] [Accepted: 08/11/2021] [Indexed: 11/16/2022] Open
Abstract
Myxobacteria represent a viable source of chemically diverse and biologically active secondary metabolites. The myxochelins are a well-studied family of catecholate-type siderophores produced by various myxobacterial strains. Here, we report the discovery, isolation, and structure elucidation of three new myxochelins N1-N3 from the terrestrial myxobacterium Corallococcus sp. MCy9049, featuring an unusual nicotinic acid moiety. Precursor-directed biosynthesis (PDB) experiments and total synthesis were performed in order to confirm structures, improve access to pure compounds for bioactivity testing, and to devise a biosynthesis proposal. The combined evaluation of metabolome and genome data covering myxobacteria supports the notion that the new myxochelin congeners reported here are in fact frequent side products of the known myxochelin A biosynthetic pathway in myxobacteria.
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Affiliation(s)
- Nicolas A. Frank
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Márió Széles
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Sergi H. Akone
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
- Department of Chemistry, Faculty of Science, University of Douala, Douala P.O. Box 24157, Cameroon
| | - Sari Rasheed
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Stephan Hüttel
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Simon Frewert
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Mostafa M. Hamed
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Jennifer Herrmann
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | | | - Anna K. H. Hirsch
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Rolf Müller
- Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research (HZI), Saarland University, Campus E8 1, 66123 Saarbrücken, Germany; (N.A.F.); (M.S.); (S.H.A.); (S.R.); (S.H.); (S.F.); (M.M.H.); (J.H.); (A.K.H.H.)
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
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13
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Winand L, Schneider P, Kruth S, Greven NJ, Hiller W, Kaiser M, Pietruszka J, Nett M. Mutasynthesis of Physostigmines in Myxococcus xanthus. Org Lett 2021; 23:6563-6567. [PMID: 34355569 DOI: 10.1021/acs.orglett.1c02374] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The alkaloid physostigmine is an approved anticholinergic drug and an important lead structure for the development of novel therapeutics. Using a complementary approach that merged chemical synthesis with pathway refactoring, we produced a series of physostigmine analogues with altered specificity and toxicity profiles in the heterologous host Myxococcus xanthus. The compounds that were generated by applying a simple feeding strategy include the promising drug candidate phenserine, which was previously accessible only by total synthesis.
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Affiliation(s)
- Lea Winand
- Department of Biochemical and Chemical Engineering, TU Dortmund University, Dortmund, 44227 Nordrhein-Westfalen, Germany
| | - Pascal Schneider
- Institute of Bioorganic Chemistry, Heinrich-Heine-University Düsseldorf at Forschungszentrum Jülich, Jülich, 44227 Nordrhein-Westfalen, Germany
| | - Sebastian Kruth
- Department of Biochemical and Chemical Engineering, TU Dortmund University, Dortmund, 44227 Nordrhein-Westfalen, Germany
| | - Nico-Joel Greven
- Department of Biochemical and Chemical Engineering, TU Dortmund University, Dortmund, 44227 Nordrhein-Westfalen, Germany
| | - Wolf Hiller
- Department of Chemistry and Chemical Biology, TU Dortmund University, Dortmund, 44227 Nordrhein-Westfalen, Germany
| | - Marcel Kaiser
- Parasite Chemotherapy Unit, Swiss Tropical and Public Health Institute, 4002 Basel, Switzerland.,University of Basel, 4001 Basel, Switzerland
| | - Jörg Pietruszka
- Institute of Bioorganic Chemistry, Heinrich-Heine-University Düsseldorf at Forschungszentrum Jülich, Jülich, 44227 Nordrhein-Westfalen, Germany.,Institut für Bio- und Geowissenschaften: Biotechnologie (IBG-1), Forschungszentrum Jülich, Jülich, 52428 Nordrhein-Westfalen, Germany
| | - Markus Nett
- Department of Biochemical and Chemical Engineering, TU Dortmund University, Dortmund, 44227 Nordrhein-Westfalen, Germany
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14
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Characterization of a Solvent-Tolerant Amidohydrolase Involved in Natural Product Heterocycle Formation. Catalysts 2021. [DOI: 10.3390/catal11080892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Heterocycles are important building blocks in pharmaceutical drugs and their enzymatic synthesis is attracting increasing interest. In recent years, various enzymes of the amidohydrolase superfamily were reported to catalyze heterocycle-forming condensation reactions. One of these enzymes, MxcM, is biochemically and kinetically characterized in this study. MxcM generates an imidazoline moiety in the biosynthesis of the natural product pseudochelin A, which features potent anti-inflammatory properties. The enzyme shows maximal activity at 50 °C and pH 10 as well as a kcat/Km value of 22,932 s−1 M−1 at its temperature optimum. Experimental data suggest that the activity of MxcM does not depend on a catalytic metal ion, which is uncommon among amidohydrolases. MxcM is highly active in diverse organic solvents and concentrated salt solutions. Furthermore, we show that MxcM is also capable to introduce imidazoline rings into derivatives of its natural substrate myxochelin B. Overall, MxcM is a solvent-stable, halotolerant enzyme with promising biochemical and kinetic properties and, in future, might become a valuable biocatalyst for the manufacturing of pharmaceutical drugs.
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15
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Zhuravlev A, Golovanov A, Toporkov V, Kuhn H, Ivanov I. Functionalized Homologues and Positional Isomers of Rabbit 15-Lipoxygenase RS75091 Inhibitor. Med Chem 2021; 18:406-416. [PMID: 34097594 DOI: 10.2174/1573406417666210604112009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 03/12/2021] [Accepted: 04/05/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND RS75091 is a cinnamic acid derivative that has been used for the crystallization of the rabbit ALOX15-inhibitor complex. The atomic coordinates of the resolved ALOX15-inhibitor complex were later used to define the binding sites of other mammalian lipoxygenase orthologs, for which no direct structural data with ligand has been reported so far. INTRODUCTION The putative binding pocket of the human ALOX5 was reconstructed on the basis of its structural alignment with rabbit ALOX15-RS75091 inhibitor. However, considering the possible conformational changes the enzyme may undergo in solution, it remains unclear whether the existing models adequately mirror the architecture of the ALOX5 active site. METHODS In this study, we prepared a series of RS75091 derivatives using a Sonogashira coupling reaction of regioisomeric bromocinnamates with protected acetylenic alcohols and tested their inhibitory properties on rabbit ALOX15. RESULTS A bulky pentafluorophenyl moiety linked to either ortho- or metha-ethynylcinnamates via aliphatic spacer does not significantly impair the inhibitory properties of RS75091. CONCLUSION Hydroxylated 2- and 3-alkynylcinnamates may be suitable candidates for incorporation of an aromatic linker group like tetrafluorophenylazides for photoaffinity labeling assays.
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Affiliation(s)
- Alexander Zhuravlev
- Lomonosov Institute of Fine Chemical Technologies, MIREA - Russian Technological University, Vernadskogo pr. 86, 119571 Moscow. Russian Federation
| | - Alexey Golovanov
- Lomonosov Institute of Fine Chemical Technologies, MIREA - Russian Technological University, Vernadskogo pr. 86, 119571 Moscow. Russian Federation
| | - Valery Toporkov
- Lomonosov Institute of Fine Chemical Technologies, MIREA - Russian Technological University, Vernadskogo pr. 86, 119571 Moscow. Russian Federation
| | - Hartmut Kuhn
- Institute of Biochemistry, Charite - University Medicine Berlin, Corporate member of Free University Berlin, Humboldt University Berlin and Berlin Institute of Health, Charitéplatz 1, D-10117 Berlin. Germany
| | - Igor Ivanov
- Lomonosov Institute of Fine Chemical Technologies, MIREA - Russian Technological University, Vernadskogo pr. 86, 119571 Moscow. Russian Federation
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Abstract
Inflammatory processes occur as a generic response of the immune system and can be triggered by various factors, such as infection with pathogenic microorganisms or damaged tissue. Due to the complexity of the inflammation process and its role in common diseases like asthma, cancer, skin disorders or Alzheimer's disease, anti-inflammatory drugs are of high pharmaceutical interest. Nature is a rich source for compounds with anti-inflammatory properties. Several studies have focused on the structural optimization of natural products to improve their pharmacological properties. As derivatization through total synthesis is often laborious with low yields and limited stereoselectivity, the use of biosynthetic, enzyme-driven reactions is an attractive alternative for synthesizing and modifying complex bioactive molecules. In this minireview, we present an outline of the biotechnological methods used to derivatize anti-inflammatory natural products, including precursor-directed biosynthesis, mutasynthesis, combinatorial biosynthesis, as well as whole-cell and in vitro biotransformation.
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Affiliation(s)
- Lea Winand
- Department of Biochemical and Chemical EngineeringLaboratory of Technical BiologyTU Dortmund UniversityEmil-Figge-Strasse 6644227DortmundGermany
| | - Angela Sester
- Department of Biochemical and Chemical EngineeringLaboratory of Technical BiologyTU Dortmund UniversityEmil-Figge-Strasse 6644227DortmundGermany
- Current address: Chair of Technical BiochemistryTechnical University of DresdenBergstrasse 6601069DresdenGermany
| | - Markus Nett
- Department of Biochemical and Chemical EngineeringLaboratory of Technical BiologyTU Dortmund UniversityEmil-Figge-Strasse 6644227DortmundGermany
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17
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Bader CD, Neuber M, Panter F, Krug D, Müller R. Supercritical Fluid Extraction Enhances Discovery of Secondary Metabolites from Myxobacteria. Anal Chem 2020; 92:15403-15411. [DOI: 10.1021/acs.analchem.0c02995] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Chantal D. Bader
- Department Microbial Natural Products, Helmholtz Centre for Infection Research (HZI), German Center for Infection Research (DZIF, Partnersite Hannover-Braunschweig) and Department of Pharmacy, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarland University Campus E8.1, 66123 Saarbrücken, Germany
| | - Markus Neuber
- Department Microbial Natural Products, Helmholtz Centre for Infection Research (HZI), German Center for Infection Research (DZIF, Partnersite Hannover-Braunschweig) and Department of Pharmacy, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarland University Campus E8.1, 66123 Saarbrücken, Germany
| | - Fabian Panter
- Department Microbial Natural Products, Helmholtz Centre for Infection Research (HZI), German Center for Infection Research (DZIF, Partnersite Hannover-Braunschweig) and Department of Pharmacy, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarland University Campus E8.1, 66123 Saarbrücken, Germany
| | - Daniel Krug
- Department Microbial Natural Products, Helmholtz Centre for Infection Research (HZI), German Center for Infection Research (DZIF, Partnersite Hannover-Braunschweig) and Department of Pharmacy, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarland University Campus E8.1, 66123 Saarbrücken, Germany
| | - Rolf Müller
- Department Microbial Natural Products, Helmholtz Centre for Infection Research (HZI), German Center for Infection Research (DZIF, Partnersite Hannover-Braunschweig) and Department of Pharmacy, Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Saarland University Campus E8.1, 66123 Saarbrücken, Germany
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18
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Sester A, Stüer-Patowsky K, Hiller W, Kloss F, Lütz S, Nett M. Biosynthetic Plasticity Enables Production of Fluorinated Aurachins. Chembiochem 2020; 21:2268-2273. [PMID: 32216075 PMCID: PMC7496329 DOI: 10.1002/cbic.202000166] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 03/25/2020] [Indexed: 12/15/2022]
Abstract
Enzyme promiscuity has important implications in the field of biocatalysis. In some cases, structural analogues of simple metabolic building blocks can be processed through entire pathways to give natural product derivatives that are not readily accessible by chemical means. In this study, we explored the plasticity of the aurachin biosynthesis pathway with regard to using fluoro‐ and chloroanthranilic acids, which are not abundant in the bacterial producers of these quinolone antibiotics. The incorporation rates of the tested precursor molecules disclosed a regiopreference for halogen substitution as well as steric limitations of enzymatic substrate tolerance. Three previously undescribed fluorinated aurachin derivatives were produced in preparative amounts by fermentation and structurally characterized. Furthermore, their antibacterial activities were evaluated in comparison to their natural congener aurachin D.
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Affiliation(s)
- Angela Sester
- Department of Biochemical and Chemical Engineering Laboratory of Technical Biology, TU Dortmund, Emil-Figge-Strasse 66, 44227, Dortmund, Germany
| | - Katrin Stüer-Patowsky
- Department of Biochemical and Chemical Engineering Laboratory of Technical Biology, TU Dortmund, Emil-Figge-Strasse 66, 44227, Dortmund, Germany
| | - Wolf Hiller
- Department of Chemistry and Chemical Biology NMR Laboratory, TU Dortmund, Otto-Hahn-Strasse 4a, 44227, Dortmund, Germany
| | - Florian Kloss
- Transfer Group Antiinfectives, Leibniz Institute for Natural Product Research and Infection Biology, Beutenbergstrasse 11a, 07745, Jena, Germany
| | - Stephan Lütz
- Department of Biochemical and Chemical Engineering Chair for Bioprocess Engineering, TU Dortmund, Emil-Figge-Strase 66, 44227, Dortmund, Germany
| | - Markus Nett
- Department of Biochemical and Chemical Engineering Laboratory of Technical Biology, TU Dortmund, Emil-Figge-Strasse 66, 44227, Dortmund, Germany
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