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Guo G, Li W, Zheng J, Liu A, Zhang Q, Wang Y. PhI(OAc) 2-Promoted 1,2-Transfer Reaction between 1,1-Disubstituted Allylic Alcohols and Thiophenols. Molecules 2024; 29:3112. [PMID: 38999064 PMCID: PMC11243614 DOI: 10.3390/molecules29133112] [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: 05/29/2024] [Revised: 06/25/2024] [Accepted: 06/25/2024] [Indexed: 07/14/2024] Open
Abstract
The PhI(OAc)2-promoted 1,2-transfer reaction between allylic alcohols and thiophenols, conducted in an argon atmosphere, has proven to be effective in producing β-carbonyl sulfides from 1,1-disubstituted allylic alcohols in high yields. This method offers a fast and efficient way to synthesize β-carbonyl sulfides, which are valuable intermediates in organic synthesis. This discussion focuses on the effects of the oxidizer, temperature, and solvent on the reaction. A proposed tentative mechanism for this reaction is also discussed.
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Affiliation(s)
- Guozhe Guo
- Gansu Key Laboratory of Efficient Utilization of Oil and Gas Resources, College of Petroleum and Chemical Engineering, Longdong University, Qingyang 745000, China
| | - Wenduo Li
- Gansu Key Laboratory of Efficient Utilization of Oil and Gas Resources, College of Petroleum and Chemical Engineering, Longdong University, Qingyang 745000, China
| | - Jingjing Zheng
- Gansu Key Laboratory of Efficient Utilization of Oil and Gas Resources, College of Petroleum and Chemical Engineering, Longdong University, Qingyang 745000, China
| | - Aping Liu
- Gansu Key Laboratory of Efficient Utilization of Oil and Gas Resources, College of Petroleum and Chemical Engineering, Longdong University, Qingyang 745000, China
| | - Qi Zhang
- Gansu Key Laboratory of Efficient Utilization of Oil and Gas Resources, College of Petroleum and Chemical Engineering, Longdong University, Qingyang 745000, China
| | - Yatao Wang
- Gansu Key Laboratory of Efficient Utilization of Oil and Gas Resources, College of Petroleum and Chemical Engineering, Longdong University, Qingyang 745000, China
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2
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Narasimman V, Ramachandran S. Purification, structural characterization, and neuroprotective effect of 3,6-diisobutyl-2,5-piperazinedione from Halomonas pacifica CARE-V15 against okadaic acid-induced neurotoxicity in zebrafish model. J Biochem Mol Toxicol 2024; 38:e23708. [PMID: 38597299 DOI: 10.1002/jbt.23708] [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: 10/31/2023] [Revised: 02/26/2024] [Accepted: 03/29/2024] [Indexed: 04/11/2024]
Abstract
Halomonas pacifica CARE-V15 was isolated from the southeastern coast of India to determine its genome sequence. Secondary metabolite gene clusters were identified using an anti-SMASH server. The concentrated crude ethyl acetate extract was evaluated by GC-MS. The bioactive compound from the crude ethyl acetate extract was fractionated by gel column chromatography. HPLC was used to purify the 3,6-diisobutyl-2,5-piperazinedione (DIP), and the structure was determined using FTIR and NMR spectroscopy. Purified DIP was used in an in silico molecular docking analysis. Purified DIP exhibits a stronger affinity for antioxidant genes like glutathione peroxidase (GPx), glutathione-S-transferase (GST), and glutathione reductase (GSR). Using in silco molecular docking analysis, the protein-ligand binding affinities of GSR (-4.70 kcal/mol), GST (-5.27 kcal/mol), and GPx (-5.37 kcal/mol) were measured. The expression of antioxidant genes were investigated by qRT-PCR. The in vivo reactive oxygen species production, lipid peroxidation, and cell death levels were significantly (p ≤ 0.05) increased in OA-induced group, but all these levels were significantly (p ≤ 0.05) decreased in the purified DIP pretreated group. Purified DIP from halophilic bacteria could thus be a useful treatment for neurological disorders associated with oxidative stress.
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Affiliation(s)
- Vignesh Narasimman
- Native Medicine and Marine Pharmacology Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education (Deemed to be University), Chettinad Health City, Kelambakkam, Tamil Nadu, India
| | - Saravanan Ramachandran
- Native Medicine and Marine Pharmacology Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education (Deemed to be University), Chettinad Health City, Kelambakkam, Tamil Nadu, India
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3
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Zhang Y, Feng L, Hemu X, Tan NH, Wang Z. OSMAC Strategy: A promising way to explore microbial cyclic peptides. Eur J Med Chem 2024; 268:116175. [PMID: 38377824 DOI: 10.1016/j.ejmech.2024.116175] [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: 09/18/2023] [Revised: 01/12/2024] [Accepted: 01/22/2024] [Indexed: 02/22/2024]
Abstract
Microbial secondary metabolites are pivotal for the development of novel drugs. However, conventional culture techniques, have left a vast array of unexpressed biosynthetic gene clusters (BGCs) in microorganisms, hindering the discovery of metabolites with distinct structural features and diverse biological functions. To address this limitation, several innovative strategies have been emerged. The "One Strain Many Compounds" (OSMAC) strategy, which involves altering microbial culture conditions, has proven to be particularly effective in mining numerous novel secondary metabolites for the past few years. Among these, microbial cyclic peptides stand out. These peptides often comprise rare amino acids, unique chemical structures, and remarkable biological function. With the advancement of the OSMAC strategy, a plethora of new cyclic peptides have been identified from diverse microbial genera. This work reviews the progress in mining novel compounds using the OSMAC strategy and the applications of this strategy in discovering 284 microbial cyclic peptides from 63 endophytic strains, aiming to offer insights for the further explorations into novel active cyclic peptides.
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Affiliation(s)
- Yu Zhang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Li Feng
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Xinya Hemu
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China
| | - Ning-Hua Tan
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
| | - Zhe Wang
- State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China.
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4
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Giurini EF, Godla A, Gupta KH. Redefining bioactive small molecules from microbial metabolites as revolutionary anticancer agents. Cancer Gene Ther 2024; 31:187-206. [PMID: 38200347 PMCID: PMC10874892 DOI: 10.1038/s41417-023-00715-x] [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: 08/21/2023] [Revised: 11/22/2023] [Accepted: 11/29/2023] [Indexed: 01/12/2024]
Abstract
Cancer treatment remains a significant challenge due to issues such as acquired resistance to conventional therapies and the occurrence of adverse treatment-related toxicities. In recent years, researchers have turned their attention to the microbial world in search of novel and effective drugs to combat this devastating disease. Microbial derived secondary metabolites have proven to be a valuable source of biologically active compounds, which exhibit diverse functions and have demonstrated potential as treatments for various human diseases. The exploration of these compounds has provided valuable insights into their mechanisms of action against cancer cells. In-depth studies have been conducted on clinically established microbial metabolites, unraveling their anticancer properties, and shedding light on their therapeutic potential. This review aims to comprehensively examine the anticancer mechanisms of these established microbial metabolites. Additionally, it highlights the emerging therapies derived from these metabolites, offering a glimpse into the immense potential they hold for anticancer drug discovery. Furthermore, this review delves into approved treatments and major drug candidates currently undergoing clinical trials, focusing on specific molecular targets. It also addresses the challenges and issues encountered in the field of anticancer drug research and development. It also presents a comprehensive exposition of the contemporary panorama concerning microbial metabolites serving as a reservoir for anticancer agents, thereby illuminating their auspicious prospects and the prospect of forthcoming strides in the domain of cancer therapeutics.
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Affiliation(s)
- Eileena F Giurini
- Division of Surgical Oncology, Department of Surgery, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Aishvarya Godla
- Division of Surgical Oncology, Department of Surgery, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Kajal H Gupta
- Division of Surgical Oncology, Department of Surgery, Rush University Medical Center, Chicago, IL, 60612, USA.
- Division of Pediatric Surgery, Department of Surgery, Rush University Medical Center, Chicago, IL, 60612, USA.
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5
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Goher SS, Abdrabo WS, Veerakanellore GB, Elgendy B. 2,5-Diketopiperazines (DKPs): Promising Scaffolds for Anticancer Agents. Curr Pharm Des 2024; 30:597-623. [PMID: 38343054 DOI: 10.2174/0113816128291798240201112916] [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: 11/07/2023] [Accepted: 01/22/2024] [Indexed: 05/25/2024]
Abstract
2,5-Diketopiperazine (2,5-DKP) derivatives represent a family of secondary metabolites widely produced by bacteria, fungi, plants, animals, and marine organisms. Many natural products with DKP scaffolds exhibited various pharmacological activities such as antiviral, antifungal, antibacterial, and antitumor. 2,5-DKPs are recognized as privileged structures in medicinal chemistry, and compounds that incorporate the 2,5-DKP scaffold have been extensively investigated for their anticancer properties. This review is a thorough update on the anti-cancer activity of natural and synthesized 2,5-DKPs from 1997 to 2022. We have explored various aspects of 2,5-DKPs modifications and summarized their structure-activity relationships (SARs) to gain insight into their anticancer activities. We have also highlighted the novel approaches to enhance the specificity and pharmacokinetics of 2,5-DKP-based anticancer agents.
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Affiliation(s)
- Shaimaa S Goher
- Chemistry Department, Faculty of Science, Benha University, Benha 13518, Egypt
- Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE), Suez Desert Road, El Sherouk City, Cairo 1183, Egypt
| | - Wessam S Abdrabo
- Chemistry Department, Faculty of Science, Benha University, Benha 13518, Egypt
| | - Giri Babu Veerakanellore
- Center for Clinical Pharmacology, Washington University School of Medicine and University of Health Sciences and Pharmacy, St. Louis, Missouri 63110, United States
- Department of Anesthesiology, Washington University School of Medicine in St. Louis, St. Louis, Missouri 63110, United States
| | - Bahaa Elgendy
- Chemistry Department, Faculty of Science, Benha University, Benha 13518, Egypt
- Center for Clinical Pharmacology, Washington University School of Medicine and University of Health Sciences and Pharmacy, St. Louis, Missouri 63110, United States
- Department of Anesthesiology, Washington University School of Medicine in St. Louis, St. Louis, Missouri 63110, United States
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6
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Yurchenko AN, Nesterenko LE, Popov RS, Kirichuk NN, Chausova VE, Chingizova EA, Isaeva MP, Yurchenko EA. The Metabolite Profiling of Aspergillus fumigatus KMM4631 and Its Co-Cultures with Other Marine Fungi. Metabolites 2023; 13:1138. [PMID: 37999234 PMCID: PMC10673247 DOI: 10.3390/metabo13111138] [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: 09/30/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/25/2023] Open
Abstract
An Aspergillus fumigatus KMM 4631 strain was previously isolated from a Pacific soft coral Sinularia sp. sample and was found to be a source of a number of bioactive secondary metabolites. The aims of this work are the confirmation of this strain' identification based on ITS, BenA, CaM, and RPB2 regions/gene sequences and the investigation of secondary metabolite profiles of Aspergillus fumigatus KMM 4631 culture and its co-cultures with Penicillium hispanicum KMM 4689, Amphichorda sp. KMM 4639, Penicillium sp. KMM 4672, and Asteromyces cruciatus KMM 4696 from the Collection of Marine Microorganisms (PIBOC FEB RAS, Vladivostok, Russia). Moreover, the DPPH-radical scavenging activity, urease inhibition, and cytotoxicity of joint fungal cultures' extracts on HepG2 cells were tested. The detailed UPLC MS qTOF investigation resulted in the identification and annotation of indolediketopiperazine, quinazoline, and tryptoquivaline-related alkaloids as well as a number of polyketides (totally 20 compounds) in the extract of Aspergillus fumigatus KMM 4631. The metabolite profiles of the co-cultures of A. fumigatus with Penicillium hispanicum, Penicillium sp., and Amphichorda sp. were similar to those of Penicillium hispanicum, Penicillium sp., and Amphichorda sp. monocultures. The metabolite profile of the co-culture of A. fumigatus with Asteromyces cruciatus differed from that of each monoculture and may be more promising for the isolation of new compounds.
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Affiliation(s)
- Anton N. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (L.E.N.); (R.S.P.); (N.N.K.); (V.E.C.); (E.A.C.); (M.P.I.)
| | | | | | | | | | | | | | - Ekaterina A. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-Letiya Vladivostoka, 159, Vladivostok 690022, Russia; (L.E.N.); (R.S.P.); (N.N.K.); (V.E.C.); (E.A.C.); (M.P.I.)
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7
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Wang L, Jiang Q, Chen S, Wang S, Lu J, Gao X, Zhang D, Jin X. Natural epidithiodiketopiperazine alkaloids as potential anticancer agents: Recent mechanisms of action, structural modification, and synthetic strategies. Bioorg Chem 2023; 137:106642. [PMID: 37276722 DOI: 10.1016/j.bioorg.2023.106642] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/18/2023] [Accepted: 05/27/2023] [Indexed: 06/07/2023]
Abstract
Cancer has become a grave health crisis that threatens the lives of millions of people worldwide. Because of the drawbacks of the available anticancer drugs, the development of novel and efficient anticancer agents should be encouraged. Epidithiodiketopiperazine (ETP) alkaloids with a 2,5-diketopiperazine (DKP) ring equipped with transannular disulfide or polysulfide bridges or S-methyl moieties constitute a special subclass of fungal natural products. Owing to their privileged sulfur units and intriguing architectural structures, ETP alkaloids exhibit excellent anticancer activities by regulating multiple cancer proteins/signaling pathways, including HIF-1, NF-κB, NOTCH, Wnt, and PI3K/AKT/mTOR, or by inducing cell-cycle arrest, apoptosis, and autophagy. Furthermore, a series of ETP alkaloid derivatives obtained via structural modification showed more potent anticancer activity than natural ETP alkaloids. To solve supply difficulties from natural resources, the total synthetic routes for several ETP alkaloids have been designed. In this review, we summarized several ETP alkaloids with anticancer properties with particular emphasis on their underlying mechanisms of action, structural modifications, and synthetic strategies, which will offer guidance to design and innovate potential anticancer drugs.
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Affiliation(s)
- Lin Wang
- School of Pharmacy, China Medical University, Shenyang 110122, China
| | - Qinghua Jiang
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Siyu Chen
- China Medical University-Queen's University of Belfast Joint College, China Medical University, Shenyang 110122, China
| | - Siyi Wang
- The 1st Clinical Department, China Medical University, Shenyang 110122, China
| | - Jingyi Lu
- School of Pharmacy, China Medical University, Shenyang 110122, China
| | - Xun Gao
- Jiangsu Institute Marine Resources Development, Jiangsu Ocean University, Lianyungang 222005, China
| | - Dongfang Zhang
- School of Pharmacy, China Medical University, Shenyang 110122, China.
| | - Xin Jin
- School of Pharmacy, China Medical University, Shenyang 110122, China.
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8
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The Potential Use of Fungal Co-Culture Strategy for Discovery of New Secondary Metabolites. Microorganisms 2023; 11:microorganisms11020464. [PMID: 36838429 PMCID: PMC9965835 DOI: 10.3390/microorganisms11020464] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/09/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023] Open
Abstract
Fungi are an important and prolific source of secondary metabolites (SMs) with diverse chemical structures and a wide array of biological properties. In the past two decades, however, the number of new fungal SMs by traditional monoculture method had been greatly decreasing. Fortunately, a growing number of studies have shown that co-culture strategy is an effective approach to awakening silent SM biosynthetic gene clusters (BGCs) in fungal strains to produce cryptic SMs. To enrich our knowledge of this approach and better exploit fungal biosynthetic potential for new drug discovery, this review comprehensively summarizes all fungal co-culture methods and their derived new SMs as well as bioactivities on the basis of an extensive literature search and data analysis. Future perspective on fungal co-culture study, as well as its interaction mechanism, is supplied.
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9
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Zheng X, Lu X, Hu Y. Distinct respiratory microbiota associates with lung cancer clinicopathological characteristics. Front Oncol 2023; 13:847182. [PMID: 36816941 PMCID: PMC9932187 DOI: 10.3389/fonc.2023.847182] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 01/09/2023] [Indexed: 02/05/2023] Open
Abstract
Introduction Commensal microbiota dysbiosis is associated with the development of lung cancer. The current studies about composition of respiratory microbiota in lung cancer patients yielded inconsistent results. This study aimed to examine the association between airway microbiota and lung cancer clinicopathological characteristics. Methods Surgically removed lesion tissues from 75 non-small cell lung cancer patients and 7 patients with benign pulmonary diseases were analyzed by 16S rRNA sequencing. Taxonomy, relative abundance, and diversity of respiratory microbiota were compared among lung cancer of different pathology and TNM stages. The effects of antibiotic and cigarette exposure on respiratory microbiota in lung cancer patients were also evaluated. Results Bacterial relative abundance and alpha- and beta-diversity analysis of lung microbiota showed significant differences among lung cancer of different pathology and benign pulmonary diseases. At the genus level, the abundance differences of 13 taxa between lung squamous cell carcinoma and lung adenocarcinoma, 63 taxa between lung squamous cell carcinoma and benign pulmonary diseases, and 4 taxa between lung adenocarcinoma and benign pulmonary diseases reached statistical significance. In contrast, diversity differences were not as significant across lung cancer of different stages. No significant differences were observed in tissue taxonomic abundances and diversity at all taxonomic levels between lung cancer patients with and without antibiotic exposure 3 months prior to surgery. For lung adenocarcinoma, respiratory bacterial abundance and diversity at all taxonomic levels did not show significant differences between smokers and non-smokers. Conclusions Our results confirm significantly differential respiratory microbiome taxa, abundance, and diversity in lung cancer of different pathology and some stages. Short-term antibiotic application might play a minor role in molding airway microbiota in lung cancer patients. Composition and diversity of respiratory microbiota in lung adenocarcinoma are not affected by cigarette exposure.
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Affiliation(s)
- Xi Zheng
- Lung Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xingbing Lu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Yang Hu
- Department of Thoracic surgery, West China Hospital, Sichuan University, Chengdu, China,*Correspondence: Yang Hu,
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10
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Huber EM. Epipolythiodioxopiperazine-Based Natural Products: Building Blocks, Biosynthesis and Biological Activities. Chembiochem 2022; 23:e202200341. [PMID: 35997236 PMCID: PMC10086836 DOI: 10.1002/cbic.202200341] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/19/2022] [Indexed: 01/25/2023]
Abstract
Epipolythiodioxopiperazines (ETPs) are fungal secondary metabolites that share a 2,5-diketopiperazine scaffold built from two amino acids and bridged by a sulfide moiety. Modifications of the core and the amino acid side chains, for example by methylations, acetylations, hydroxylations, prenylations, halogenations, cyclizations, and truncations create the structural diversity of ETPs and contribute to their biological activity. However, the key feature responsible for the bioactivities of ETPs is their sulfide moiety. Over the last years, combinations of genome mining, reverse genetics, metabolomics, biochemistry, and structural biology deciphered principles of ETP production. Sulfurization via glutathione and uncovering of the thiols followed by either oxidation or methylation crystallized as fundamental steps that impact expression of the biosynthesis cluster, toxicity and secretion of the metabolite as well as self-tolerance of the producer. This article showcases structure and activity of prototype ETPs such as gliotoxin and discusses the current knowledge on the biosynthesis routes of these exceptional natural products.
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Affiliation(s)
- Eva M Huber
- Chair of Biochemistry, Center for Protein Assemblies, Technical University of Munich, Ernst-Otto-Fischer-Str. 8, 85748, Garching, Germany
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11
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Koning N, Strand D. A C-H Activation Approach to the Tricyclic Core of Glionitrin A and B. ACS OMEGA 2022; 7:12329-12341. [PMID: 35449932 PMCID: PMC9016890 DOI: 10.1021/acsomega.2c00810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
Synthesis of diketopiperazines has been of long-standing interest in both natural product synthesis and medicinal chemistry. Here, we present an operationally convenient and efficient approach to the fused indoline-diketopiperazine tricyclic core of glionitrin A/B and related structures using a Pd-catalyzed C-H activation reaction to form the indoline five-membered ring. Exploratory work aimed at elaborating the tricyclic structures into the corresponding natural products is discussed.
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Affiliation(s)
- Nicolas
R. Koning
- Centre for Analysis and Synthesis,
Department of Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Daniel Strand
- Centre for Analysis and Synthesis,
Department of Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden
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12
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Koning NR, Sundin AP, Strand D. Total Synthesis of (-)-Glionitrin A and B Enabled by an Asymmetric Oxidative Sulfenylation of Triketopiperazines. J Am Chem Soc 2021; 143:21218-21222. [PMID: 34808045 PMCID: PMC8704193 DOI: 10.1021/jacs.1c10364] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
![]()
Asymmetric construction
of dithiodiketopiperazines on otherwise
achiral scaffolds remains a pivotal synthetic challenge encountered
in many biologically significant natural products. Herein, we report
the first total syntheses of (−)-glionitrin A/B and revise
the absolute configurations. Emerging from the study is a novel oxidative
sulfenylation of triketopiperazines that enables asymmetric formation
of dithiodiketopiperazines on sensitive substrates. The concise
route paves the way for further studies on the potent antimicrobial
and antitumor activities of glionitrin A and the intriguing ability
of glionitrin B to inhibit invasive ability of cancer cells.
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Affiliation(s)
- Nicolas R Koning
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Anders P Sundin
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Daniel Strand
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden
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13
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Bojarska J, Mieczkowski A, Ziora ZM, Skwarczynski M, Toth I, Shalash AO, Parang K, El-Mowafi SA, Mohammed EHM, Elnagdy S, AlKhazindar M, Wolf WM. Cyclic Dipeptides: The Biological and Structural Landscape with Special Focus on the Anti-Cancer Proline-Based Scaffold. Biomolecules 2021; 11:1515. [PMID: 34680148 PMCID: PMC8533947 DOI: 10.3390/biom11101515] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022] Open
Abstract
Cyclic dipeptides, also know as diketopiperazines (DKP), the simplest cyclic forms of peptides widespread in nature, are unsurpassed in their structural and bio-functional diversity. DKPs, especially those containing proline, due to their unique features such as, inter alia, extra-rigid conformation, high resistance to enzyme degradation, increased cell permeability, and expandable ability to bind a diverse of targets with better affinity, have emerged in the last years as biologically pre-validated platforms for the drug discovery. Recent advances have revealed their enormous potential in the development of next-generation theranostics, smart delivery systems, and biomaterials. Here, we present an updated review on the biological and structural profile of these appealing biomolecules, with a particular emphasis on those with anticancer properties, since cancers are the main cause of death all over the world. Additionally, we provide a consideration on supramolecular structuring and synthons, based on the proline-based DKP privileged scaffold, for inspiration in the design of compound libraries in search of ideal ligands, innovative self-assembled nanomaterials, and bio-functional architectures.
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Affiliation(s)
- Joanna Bojarska
- Faculty of Chemistry, Institute of General & Inorganic Chemistry, Technical University of Lodz, 90-924 Lodz, Poland;
| | - Adam Mieczkowski
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Pawinskiego 5a, 02-106 Warsaw, Poland;
| | - Zyta M. Ziora
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, QLD 4072, Australia; (Z.M.Z.); (I.T.)
| | - Mariusz Skwarczynski
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia; (M.S.); (A.O.S.)
| | - Istvan Toth
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, QLD 4072, Australia; (Z.M.Z.); (I.T.)
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia; (M.S.); (A.O.S.)
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia
| | - Ahmed O. Shalash
- School of Chemistry and Molecular Biosciences, The University of Queensland, St. Lucia, QLD 4072, Australia; (M.S.); (A.O.S.)
| | - Keykavous Parang
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, School of Pharmacy, Chapman University, Irvine, CA 92618, USA; (K.P.); (S.A.E.-M.); (E.H.M.M.)
| | - Shaima A. El-Mowafi
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, School of Pharmacy, Chapman University, Irvine, CA 92618, USA; (K.P.); (S.A.E.-M.); (E.H.M.M.)
| | - Eman H. M. Mohammed
- Center for Targeted Drug Delivery, Department of Biomedical and Pharmaceutical Sciences, Harry and Diane Rinker Health Science Campus, School of Pharmacy, Chapman University, Irvine, CA 92618, USA; (K.P.); (S.A.E.-M.); (E.H.M.M.)
| | - Sherif Elnagdy
- Botany Department, Faculty of Science, Cairo University, Giza 12613, Egypt; (S.E.); (M.A.)
| | - Maha AlKhazindar
- Botany Department, Faculty of Science, Cairo University, Giza 12613, Egypt; (S.E.); (M.A.)
| | - Wojciech M. Wolf
- Faculty of Chemistry, Institute of General & Inorganic Chemistry, Technical University of Lodz, 90-924 Lodz, Poland;
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Wu C, Murugan SP, Wang Y, Pan H, Sun B, Lin Y, Fatimah S, Chang AHH, Chen C, Lee G. Synthesis of Indoline‐Fused 2,5‐Diketopiperazine Scaffolds
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Ugi‐4CR in the Basic Mediated Tandem Consecutive Cyclization. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chih‐Yu Wu
- Department of Nursing Tzu Chi University of Science and Technology Hualien 970302 Taiwan
| | | | - Yu‐Wei Wang
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Hao‐Wei Pan
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Bing‐Jian Sun
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Yu‐Ting Lin
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Siti Fatimah
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Agnes H. H. Chang
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Chinpiao Chen
- Department of Nursing Tzu Chi University of Science and Technology Hualien 970302 Taiwan
- Department of Chemistry National Dong Hwa University Shoufeng Hualien 974301 Taiwan
| | - Gene‐Hsian Lee
- Instrumentation Center National Taiwan University Taipei 10617 Taiwan
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15
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Metabolic Profile of Scytalidium parasiticum- Ganoderma boninense Co-Cultures Revealed the Alkaloids, Flavonoids and Fatty Acids that Contribute to Anti-Ganoderma Activity. Molecules 2020; 25:molecules25245965. [PMID: 33339375 PMCID: PMC7767070 DOI: 10.3390/molecules25245965] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 12/03/2022] Open
Abstract
In solving the issue of basal stem rot diseases caused by Ganoderma, an investigation of Scytalidium parasiticum as a biological control agent that suppresses Ganoderma infection has gained our interest, as it is more environmentally friendly. Recently, the fungal co-cultivation has emerged as a promising method to discover novel antimicrobial metabolites. In this study, an established technique of co-culturing Scytalidium parasiticum and Ganoderma boninense was applied to produce and induce metabolites that have antifungal activity against G. boninense. The crude extract from the co-culture media was applied to a High Performance Liquid Chromatography (HPLC) preparative column to isolate the bioactive compounds, which were tested against G. boninense. The fractions that showed inhibition against G. boninense were sent for a Liquid Chromatography-Time of Flight-Mass Spectrometry (LC-TOF-MS) analysis to further identify the compounds that were responsible for the microbicidal activity. Interestingly, we found that eudistomin I, naringenin 7-O-beta-D-glucoside and penipanoid A, which were present in different abundances in all the active fractions, except in the control, could be the antimicrobial metabolites. In addition, the abundance of fatty acids, such as oleic acid and stearamide in the active fraction, also enhanced the antimicrobial activity. This comprehensive metabolomics study could be used as the basis for isolating biocontrol compounds to be applied in oil palm fields to combat a Ganoderma infection.
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16
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Mori S, Garneau-Tsodikova S, Tsodikov OV. Unimodular Methylation by Adenylation-Thiolation Domains Containing an Embedded Methyltransferase. J Mol Biol 2020; 432:5802-5808. [PMID: 32920052 DOI: 10.1016/j.jmb.2020.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/16/2020] [Accepted: 09/03/2020] [Indexed: 10/23/2022]
Abstract
Nonribosomal peptides (NRPs) are natural products that are biosynthesized by large multi-enzyme assembly lines called nonribosomal peptide synthetases (NRPSs). We have previously discovered that backbone or side chain methylation of NRP residues is carried out by an interrupted adenylation (A) domain that contains an internal methyltransferase (M) domain, while maintaining a monolithic AMA fold of the bifunctional enzyme. A key question that has remained unanswered is at which step of the assembly line mechanism the methylation by these embedded M domains takes place. Does the M domain methylate an amino acid residue tethered to a thiolation (T) domain on same NRPS module (in cis), or does it methylate this residue on a nascent peptide tethered to a T domain on another module (in trans)? In this study, we investigated the kinetics of methylation by wild-type AMAT tridomains from two NRPSs involved in biosynthesis of anticancer depsipeptides thiocoraline and echinomycin, and by mutants of these domains, for which methylation can occur only in trans. The analysis of the methylation kinetics unequivocally demonstrated that the wild-type AMATs methylate overwhelmingly in cis, strongly suggesting that this is also the case in the context of the entire NRPS assembly line process. The mechanistic insight gained in this study will facilitate rational genetic engineering of NRPS to generate unnaturally methylated NRPs.
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Affiliation(s)
- Shogo Mori
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536-0596, USA
| | - Sylvie Garneau-Tsodikova
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536-0596, USA.
| | - Oleg V Tsodikov
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Kentucky, Lexington, KY 40536-0596, USA.
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17
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Lundy TA, Mori S, Garneau-Tsodikova S. A thorough analysis and categorization of bacterial interrupted adenylation domains, including previously unidentified families. RSC Chem Biol 2020; 1:233-250. [PMID: 34458763 PMCID: PMC8341866 DOI: 10.1039/d0cb00092b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 08/04/2020] [Indexed: 11/25/2022] Open
Abstract
Interrupted adenylation (A) domains are key to the immense structural diversity seen in the nonribosomal peptide (NRP) class of natural products (NPs). Interrupted A domains are A domains that contain within them the catalytic portion of another domain, most commonly a methylation (M) domain. It has been well documented that methylation events occur with extreme specificity on either the backbone (N-) or side chain (O- or S-) of the amino acid (or amino acid-like) building blocks of NRPs. Here, through taxonomic and phylogenetic analyses as well as multiple sequence alignments, we evaluated the similarities and differences between interrupted A domains. We probed their taxonomic distribution amongst bacterial organisms, their evolutionary relatedness, and described conserved motifs of each type of M domain found to be embedded in interrupted A domains. Additionally, we categorized interrupted A domains and the M domains within them into a total of seven distinct families and six different types, respectively. The families of interrupted A domains include two new families, 6 and 7, that possess new architectures. Rather than being interrupted between the previously described a2–a3 or a8–a9 of the ten conserved A domain sequence motifs (a1–a10), family 6 contains an M domain between a6–a7, a previously unknown interruption site. Family 7 demonstrates that di-interrupted A domains exist in Nature, containing an M domain between a2–a3 as well as one between a6–a7, displaying a novel arrangement. These in-depth investigations of amino acid sequences deposited in the NCBI database highlighted the prevalence of interrupted A domains in bacterial organisms, with each family of interrupted A domains having a different taxonomic distribution. They also emphasized the importance of utilizing a broad range of bacteria for NP discovery. Categorization of the families of interrupted A domains and types of M domains allowed for a better understanding of the trends of naturally occurring interrupted A domains, which illuminated patterns and insights on how to harness them for future engineering studies. In-depth study of intriguing bacterial interrupted adenylation domains from seven distinct families and six different types.![]()
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Affiliation(s)
- Taylor A Lundy
- University of Kentucky, Department of Pharmaceutical Sciences, College of Pharmacy Lexington KY 40536-0596 USA
| | - Shogo Mori
- University of Kentucky, Department of Pharmaceutical Sciences, College of Pharmacy Lexington KY 40536-0596 USA
| | - Sylvie Garneau-Tsodikova
- University of Kentucky, Department of Pharmaceutical Sciences, College of Pharmacy Lexington KY 40536-0596 USA
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Lei J, Song GT, Luo YF, Tang DY, Yan W, Li HY, Chen ZZ, Xu ZG. Synthesis of indoline-piperidinones viaa novel Ugi, ring expansion, pseudo-Dieckmann condensation and rearrangement cascade reaction. Org Chem Front 2020. [DOI: 10.1039/d0qo00028k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Synthesis of functionalized indoline-piperidinones through an Ugi, ring expansion,pseudo-Dieckmann and rearrangement cascade reaction in one-pot.
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Affiliation(s)
- Jie Lei
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Gui-Ting Song
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Ya-Fei Luo
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Dian-Yong Tang
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Wei Yan
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Arkansas for Medical Sciences
- Little Rock
- USA
| | - Hong-yu Li
- Department of Pharmaceutical Sciences
- College of Pharmacy
- University of Arkansas for Medical Sciences
- Little Rock
- USA
| | - Zhong-Zhu Chen
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
| | - Zhi-Gang Xu
- College of Pharmacy
- National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics
- Chongqing Key Laboratory of Kinase Modulators as Innovative Medicine
- Chongqing University of Arts and Sciences
- Chongqing 402160
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Bhattacharya D, Lai TK, Saha A, Selvin J, Mukherjee J. Structural elucidation and antimicrobial activity of a diketopiperazine isolated from a Bacillus sp. associated with the marine sponge Spongia officinalis. Nat Prod Res 2019; 35:2315-2323. [PMID: 31583909 DOI: 10.1080/14786419.2019.1672684] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
A diketopiperazine (3S, 6S)-3,6-diisobutylpiperazine-2,5-dione was isolated from a sponge-associated microbe for the first time and characterized by FTIR, HRESI-MS, 1H, 13C NMR and 2D NMR. The source is novel for this compound. Single crystal XRD of this diketopiperazine obtained as a natural product was analysed for the first time and its melting point was determined to be 262 °C. MICs of this cyclic dipeptide against Escherichia coli and Staphylococcus aureus subsp. aureus were 16 µg mL-1 and 22 µg mL-1 respectively, the first report of antibacterial activity of this diketopiperazine.Supplemental data for this article can be accessed at https://doi.org/10.1080/14786419.2019.1672684.
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Affiliation(s)
| | - Tapan Kumar Lai
- Department of Chemistry, Vidyasagar Evening College , Kolkata , India
| | - Amit Saha
- Department of Chemistry, Jadavpur University , Kolkata , India
| | - Joseph Selvin
- Department of Microbiology, Pondicherry University , Puducherry , India
| | - Joydeep Mukherjee
- School of Environmental Studies, Jadavpur University , Kolkata , India
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Asfour HZ, Awan ZA, Bagalagel AA, Elfaky MA, Abdelhameed RFA, Elhady SS. Large-Scale Production of Bioactive Terrein by Aspergillus terreus Strain S020 Isolated from the Saudi Coast of the Red Sea. Biomolecules 2019; 9:biom9090480. [PMID: 31547354 PMCID: PMC6769563 DOI: 10.3390/biom9090480] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/08/2019] [Accepted: 09/09/2019] [Indexed: 01/01/2023] Open
Abstract
The diversity of symbiotic fungi derived from two marine sponges and sediment collected off Obhur, Jeddah (Saudi Arabia), was investigated in the current study. A total of 23 isolates were purified using a culture-dependent approach. Using the morphological properties combined with internal transcribed spacer-rDNA (ITS-rDNA) sequences, 23 fungal strains (in the majority Penicillium and Aspergillus) were identified from these samples. The biological screening (cytotoxic and antimicrobial activities) of small-scale cultures of these fungi yielded several target fungal strains which produced bioactive secondary metabolites. Amongst these isolates, the crude extract of Aspergillus terreus strain S020, which was cultured in fermentation static broth, 21 L, for 40 days at room temperature on potato dextrose broth, displayed strong antimicrobial activities against Pseudomonas aeruginosa and Staphylococcus aureus and significant antiproliferative effects on human carcinoma cells. Chromatographic separation of the crude extract by silica gel column chromatography indicated that the S020 isolate could produce a series of chemical compounds. Among these, pure crystalline terrein was separated with a high yield of 537.26 ± 23.42 g/kg extract, which represents the highest fermentation production of terrein to date. Its chemical structure was elucidated on the basis of high-resolution electrospray ionization mass spectrometry (HRESIMS) or high-resolution mass spectrometry (HRMS), 1D, and 2D NMR spectroscopic analyses and by comparison with reported data. The compound showed strong cytotoxic activity against colorectal carcinoma cells (HCT-116) and hepatocellular carcinoma cells (HepG2), with IC50 values of 12.13 and 22.53 µM, respectively. Our study highlights the potential of A. terreus strain S020 for the industrial production of bioactive terrein on a large scale and the importance of future investigations of these strains to identify the bioactive leads in these fungal extracts.
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Affiliation(s)
- Hani Z Asfour
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, Princess Al-Jawhara Center of Excellence in Research of Hereditary Disorders, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| | - Zuhier A Awan
- Department of Clinical Biochemistry, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| | - Alaa A Bagalagel
- Department of Clinical Pharmacy, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| | - Mahmoud A Elfaky
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| | - Reda F A Abdelhameed
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt.
| | - Sameh S Elhady
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
- Department of Pharmacognosy, Faculty of Pharmacy, Port Said University, Port Said 42526, Egypt.
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21
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Shi J, Xu X, Zhao EJ, Zhang B, Li W, Zhao Y, Jiao RH, Tan RX, Ge HM. Genome Mining and Enzymatic Total Biosynthesis of Purincyclamide. Org Lett 2019; 21:6825-6829. [DOI: 10.1021/acs.orglett.9b02461] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jing Shi
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Xiang Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Er Juan Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Bo Zhang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Wei Li
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Yang Zhao
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Rui Hua Jiao
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210023, China
| | - Ren Xiang Tan
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210023, China
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Hui Ming Ge
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210023, China
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22
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Wang Y, Yin Y, Zhang Q, Pan W, Guo H, Pei K. Bi(OTf)3 catalyzed synthesis of acyclic β-sulfanyl ketones via a tandem Meyer-Schuster rearrangement/conjugate addition reaction. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.06.064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Akone SH, Pham CD, Chen H, Ola ARB, Ntie-Kang F, Proksch P. Epigenetic modification, co-culture and genomic methods for natural product discovery. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2018-0118] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Fungi and bacteria are encountered in many habitats where they live in complex communities interacting with one another mainly by producing secondary metabolites, which are organic compounds that are not directly involved in the normal growth, development, or reproduction of the organism. These organisms appear as a promising source for the discovery of novel bioactive natural products that may find their application in medicine. However, the production of secondary metabolites by those organisms when cultured axenically is limited as only a subset of biosynthetic genes is expressed under standard laboratory conditions leading to the search of new methods for the activation of the silent genes including epigenetic modification and co-cultivation. Biosynthetic gene clusters which produce secondary metabolites are known to be present in a heterochromatin state in which the transcription of constitutive genes is usually regulated by epigenetic modification including DNA methylation and histone deacetylation. Therefore, small-molecule epigenetic modifiers which promote changes in the structure of chromatin could control the expression of silent genes and may be rationally employed for the discovery of novel bioactive compounds. Co-cultivation, which is also known as mixed-fermentation, usually implies two or more microorganisms in the same medium in which the resulting competition is known to enhance the production of constitutively present compounds and/or to lead to the induction of cryptic metabolites that were not detected in axenic cultures of the considered axenic microorganism. Genomic strategies could help to identify biosynthetic gene clusters in fungal genomes and link them to their products by the means of novel algorithms as well as integrative pan-genomic approaches. Despite that all these techniques are still in their infancy, they appear as promising sources for the discovery of new bioactive compounds. This chapter presents recent ecological techniques for the discovery of new secondary metabolites that might find application in medicine.
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Inter-Kingdom beach warfare: Microbial chemical communication activates natural chemical defences. ISME JOURNAL 2018; 13:147-158. [PMID: 30116041 DOI: 10.1038/s41396-018-0265-z] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 07/10/2018] [Accepted: 07/26/2018] [Indexed: 11/09/2022]
Abstract
An inter-kingdom beach warfare between a Streptomyces sp. and Aspergillus sp. co-isolated from shallow water beach sand, collected off Heron Island, Queensland, Australia, saw the bacteriostatic Aspergillus metabolite cyclo-(L-Phe-trans-4-hydroxy-L-Pro) (3) stimulate the Streptomyces to produce nitric oxide (NO), which in turn mediated transcriptional activation of a silent biosynthetic gene cluster (BGC) for fungistatic heronapyrrole B (1). Structure activity relationship studies, coupled with the use of NO synthase inhibitors, donors and scavangers, and both genomic and transcriptomic analyses, confirmed the extraordinary chemical cue specificity of 3, and its NO-mediated mechanism of transcriptional action. Our findings reveal the importance of inter-kingdom (fungal-bacterial) chemical communication in the regulation of silent BGCs coding for chemical defenses. We propose that the detection and characterisation of NO mediated transcriptional activation (NOMETA) of silent chemical defences in the environment, may inspire broader application in the field of microbial biodiscovery.
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25
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Structural basis for backbone N-methylation by an interrupted adenylation domain. Nat Chem Biol 2018; 14:428-430. [PMID: 29556104 DOI: 10.1038/s41589-018-0014-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 12/29/2017] [Indexed: 12/11/2022]
Abstract
Interrupted adenylation domains are enigmatic fusions, in which one enzyme is inserted into another to form a highly unusual bifunctional enzyme. We present the first crystal structure of an interrupted adenylation domain that reveals a unique embedded methyltransferase. The structure and functional data provide insight into how these enzymes N-methylate amino acid precursors en route to nonribosomal peptides.
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26
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Youssef DTA, Alahdal AM. Cytotoxic and Antimicrobial Compounds from the Marine-Derived Fungus, Penicillium Species. Molecules 2018; 23:E394. [PMID: 29439550 PMCID: PMC6017105 DOI: 10.3390/molecules23020394] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 02/05/2018] [Accepted: 02/06/2018] [Indexed: 11/22/2022] Open
Abstract
The organic extract of liquid cultures of the marine-derived Penicillium sp. was investigated. Fractionation of the extracts of the fungus led to the purification and identification of two new compounds, penicillatides A (1) and B (2), together with the previously reported cyclo(R-Pro-S-Phe) (3) and cyclo(R-Pro-R-Phe) (4). The structures of compounds 1-4 were assigned by extensive interpretation of their NMR and high-resolution mass spectrometry (HRMS). The antiproliferative and cytotoxic activities of the compounds against three human cancer cell lines as well as their antimicrobial activity against several pathogens were evaluated. Compounds 2-4 displayed variable cytotoxic and antimicrobial activities.
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Affiliation(s)
- Diaa T A Youssef
- Department of Natural Products, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
| | - Abdulrahman M Alahdal
- Department of Clinical Pharmacy, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
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27
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Vijaya Sundar J, Kamaraj M, Subramanian V. Probing the effect of different graphitic nitrogen sites on the aerobic oxidation of thiols to disulfides: a DFT study. Phys Chem Chem Phys 2018; 20:2057-2065. [PMID: 29300059 DOI: 10.1039/c7cp05924h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Functionalized graphene materials are well known for their application in catalyzing the aerobic oxidation of alcohols, hydrocarbons, etc. in an aqueous medium. Despite the fact that a few catalysts are known to oxidize thiols to disulfides, their selectivity is poor and requires oxidants that are not suitable in terms of the principles of green chemistry. Therefore, in this context, an attempt has been made to investigate the possibility of utilizing nitrogen doped graphene for the aerobic oxidation of thiols to disulfides using density functional theory (DFT). Our previous study (V. S. Jeyaraj, M. Kamaraj and V. Subramanian, J. Phys. Chem. C, 2015, 119, 26438-26450) has shed light on the activation of dioxygen to form activated oxygen species (AOS) at different graphitic nitrogen sites. Hence the same has been used to study the two-electron oxidation of thiophenol and methanethiol. The AOS are of three kinds: (1) peroxide type at the edges, (2) superoxide type at the center and (3) ketonic type at edges. The findings from this study indicate that the peroxide type AOS leads to selective formation of diphenyl disulfide, whereas the superoxide type at the center facilitates the formation of hydrogen peroxide which could lead to over-oxidation of disulfide. The oxidation of aromatic thiols (thiophenol) by the ketonic type of AOS is nearly a barrier-less reaction (0.67 kcal mol-1). Similarly, AOS at the edges with the peroxide form can oxidize aliphatic thiols (methanethiol) with a less barrier of 1.55 kcal mol-1, which can be a spontaneous reaction. The mechanism of oxidation is completely different from the oxidative pathway of alcohols by the same AOS. The formation of S-OH species is strictly avoided by the strong stabilization of thiyl radicals over the π-surface of graphene.
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Affiliation(s)
- J Vijaya Sundar
- Chemical Laboratory, CSIR-Central Leather Research Institute, Adyar, Chennai 600 020, India.
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28
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Wang X, Li Y, Zhang X, Lai D, Zhou L. Structural Diversity and Biological Activities of the Cyclodipeptides from Fungi. Molecules 2017; 22:E2026. [PMID: 29168781 PMCID: PMC6149763 DOI: 10.3390/molecules22122026] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 11/15/2017] [Indexed: 11/17/2022] Open
Abstract
Cyclodipeptides, called 2,5-diketopiperazines (2,5-DKPs), are obtained by the condensation of two amino acids. Fungi have been considered to be a rich source of novel and bioactive cyclodipeptides. This review highlights the occurrence, structures and biological activities of the fungal cyclodipeptides with the literature covered up to July 2017. A total of 635 fungal cyclodipeptides belonging to the groups of tryptophan-proline, tryptophan-tryptophan, tryptophan-Xaa, proline-Xaa, non-tryptophan-non-proline, and thio-analogs have been discussed and reviewed. They were mainly isolated from the genera of Aspergillus and Penicillium. More and more cyclodipeptides have been isolated from marine-derived and plant endophytic fungi. Some of them were screened to have cytotoxic, phytotoxic, antimicrobial, insecticidal, vasodilator, radical scavenging, antioxidant, brine shrimp lethal, antiviral, nematicidal, antituberculosis, and enzyme-inhibitory activities to show their potential applications in agriculture, medicinal, and food industry.
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Affiliation(s)
- Xiaohan Wang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Yuying Li
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Xuping Zhang
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Daowan Lai
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
| | - Ligang Zhou
- Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100193, China.
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Mori S, Garzan A, Tsodikov OV, Garneau-Tsodikova S. Deciphering Nature’s Intricate Way of N,S-Dimethylating l-Cysteine: Sequential Action of Two Bifunctional Adenylation Domains. Biochemistry 2017; 56:6087-6097. [DOI: 10.1021/acs.biochem.7b00980] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shogo Mori
- Department of Pharmaceutical
Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536-0596, United States
| | - Atefeh Garzan
- Department of Pharmaceutical
Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536-0596, United States
| | - Oleg V. Tsodikov
- Department of Pharmaceutical
Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536-0596, United States
| | - Sylvie Garneau-Tsodikova
- Department of Pharmaceutical
Sciences, College of Pharmacy, University of Kentucky, Lexington, Kentucky 40536-0596, United States
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30
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Park HB, Park JS, Lee SI, Shin B, Oh DC, Kwon HC. Gordonic Acid, a Polyketide Glycoside Derived from Bacterial Coculture of Streptomyces and Gordonia Species. JOURNAL OF NATURAL PRODUCTS 2017; 80:2542-2546. [PMID: 28845982 DOI: 10.1021/acs.jnatprod.7b00293] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Despite numerous efforts to discover novel bioactive products from microorganisms, previously reported compounds are repetitively reisolated. A new polyketide glycoside, gordonic acid (1), isolated from the mixed culture of two Gram-positive bacteria, Gordonia sp. KMC005 and Streptomyces tendae KMC006, is reported. The structure of 1 was characterized as an acyclic polyene polyketide substituted with a β-d-digitoxopyranose through NMR, HR-ESI-QTOF-MS, IR, and UV spectral data. The stereochemistry for 1 was determined by Mosher's method followed by 2D NOESY analysis and by NMR chemical shift calculations supported by DP4 analysis. Gordonic acid (1) showed weak activity against Micrococcus luteus and Enterococcus hirae.
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Affiliation(s)
- Hyun Bong Park
- Natural Constituents Research Center, Korea Institute of Science and Technology (KIST) , Gangneung, Gangwon-do 25451, Republic of Korea
| | - Jin-Soo Park
- Natural Constituents Research Center, Korea Institute of Science and Technology (KIST) , Gangneung, Gangwon-do 25451, Republic of Korea
| | - Seung Il Lee
- Natural Constituents Research Center, Korea Institute of Science and Technology (KIST) , Gangneung, Gangwon-do 25451, Republic of Korea
| | - Bora Shin
- Natural Products Research Institute, College of Pharmacy, Seoul National University , Seoul 151-742, Republic of Korea
| | - Dong-Chan Oh
- Natural Products Research Institute, College of Pharmacy, Seoul National University , Seoul 151-742, Republic of Korea
| | - Hak Cheol Kwon
- Natural Constituents Research Center, Korea Institute of Science and Technology (KIST) , Gangneung, Gangwon-do 25451, Republic of Korea
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31
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Bao J, Wang J, Zhang XY, Nong XH, Qi SH. New Furanone Derivatives and Alkaloids from the Co-Culture of Marine-Derived Fungi Aspergillus sclerotiorum and Penicillium citrinum. Chem Biodivers 2017; 14. [PMID: 27936301 DOI: 10.1002/cbdv.201600327] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 11/29/2016] [Indexed: 02/05/2023]
Abstract
Six new compounds including two furanone derivatives sclerotiorumins A and B (1 and 2), one novel oxadiazin derivative sclerotiorumin C (3), one pyrrole derivative 1-(4-benzyl-1H-pyrrol-3-yl)ethanone (4), and two complexes of neoaspergillic acid aluminiumneohydroxyaspergillin (5) and ferrineohydroxyaspergillin (6) were isolated from the co-culture of marine-derived fungi Aspergillus sclerotiorum and Penicillium citrinum. Compound 3 was the first natural 1,2,4-oxadiazin-6-one. Compound 5 showed significant and selective cytotoxicity against human histiocytic lymphoma U937 cell line (IC50 = 4.2 μm) and strong toxicity towards brine shrimp (LC50 = 6.1 μm), and oppositely increased the growth and biofilm formation of Staphylococcus aureus.
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Affiliation(s)
- Jie Bao
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Material Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, P. R. China
| | - Jie Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Material Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, P. R. China
| | - Xiao-Yong Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Material Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, P. R. China
| | - Xu-Hua Nong
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Material Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, P. R. China
| | - Shu-Hua Qi
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Material Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou, 510301, P. R. China
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32
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Golubev P, Krasavin M. Sterically Constrained and Encumbered: An Approach to the Naturally Occurring Peptidomimetic Tetrahydropyrazino[1,2-a]indole-1,4-dione Core. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700152] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Pavel Golubev
- Institute of Chemistry; Saint Petersburg State University; 26 Universitetsky prospekt 198504 Peterhof Russia
| | - Mikhail Krasavin
- Institute of Chemistry; Saint Petersburg State University; 26 Universitetsky prospekt 198504 Peterhof Russia
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33
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Induction of cryptic bioactive 2,5-diketopiperazines in fungus Penicillium sp. DT-F29 by microbial co-culture. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.12.077] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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34
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Tokuyama H, Sato S, Hirayama A, Adachi T, Kawauchi D, Ueda H. AgNTf2-Mediated Arylation of Bromopyrroloindolines. HETEROCYCLES 2017. [DOI: 10.3987/com-17-13777] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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35
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Sato S, Hirayama A, Ueda H, Tokuyama H. Total Syntheses of (+)-T988 B and (+)-T988 C through the AgNTf2-Mediated Coupling of Bromopyrroloindoline with Indole. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600474] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Soichiro Sato
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Azusa Hirayama
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Hirofumi Ueda
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Hidetoshi Tokuyama
- Graduate School of Pharmaceutical Sciences; Tohoku University; Aoba 6-3, Aramaki, Aoba-ku Sendai 980-8578 Japan
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36
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Dopstadt J, Neubauer L, Tudzynski P, Humpf HU. The Epipolythiodiketopiperazine Gene Cluster in Claviceps purpurea: Dysfunctional Cytochrome P450 Enzyme Prevents Formation of the Previously Unknown Clapurines. PLoS One 2016; 11:e0158945. [PMID: 27390873 PMCID: PMC4938161 DOI: 10.1371/journal.pone.0158945] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 06/24/2016] [Indexed: 01/07/2023] Open
Abstract
Claviceps purpurea is an important food contaminant and well known for the production of the toxic ergot alkaloids. Apart from that, little is known about its secondary metabolism and not all toxic substances going along with the food contamination with Claviceps are known yet. We explored the metabolite profile of a gene cluster in C. purpurea with a high homology to gene clusters, which are responsible for the formation of epipolythiodiketopiperazine (ETP) toxins in other fungi. By overexpressing the transcription factor, we were able to activate the cluster in the standard C. purpurea strain 20.1. Although all necessary genes for the formation of the characteristic disulfide bridge were expressed in the overexpression mutants, the fungus did not produce any ETPs. Isolation of pathway intermediates showed that the common biosynthetic pathway stops after the first steps. Our results demonstrate that hydroxylation of the diketopiperazine backbone is the critical step during the ETP biosynthesis. Due to a dysfunctional enzyme, the fungus is not able to produce toxic ETPs. Instead, the pathway end-products are new unusual metabolites with a unique nitrogen-sulfur bond. By heterologous expression of the Leptosphaeria maculans cytochrome P450 encoding gene sirC, we were able to identify the end-products of the ETP cluster in C. purpurea. The thioclapurines are so far unknown ETPs, which might contribute to the toxicity of other C. purpurea strains with a potentially intact ETP cluster.
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Affiliation(s)
- Julian Dopstadt
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 45, 48149 Münster, Germany
| | - Lisa Neubauer
- Institute of Plant Biology and Biotechnology, Westfälische Wilhelms-Universität Münster, Schlossplatz 8, 48143 Münster, Germany
| | - Paul Tudzynski
- Institute of Plant Biology and Biotechnology, Westfälische Wilhelms-Universität Münster, Schlossplatz 8, 48143 Münster, Germany
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstraße 45, 48149 Münster, Germany
- * E-mail:
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Duell ER, Glaser M, Le Chapelain C, Antes I, Groll M, Huber EM. Sequential Inactivation of Gliotoxin by the S-Methyltransferase TmtA. ACS Chem Biol 2016; 11:1082-9. [PMID: 26808594 DOI: 10.1021/acschembio.5b00905] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The epipolythiodioxopiperazine (ETP) gliotoxin mediates toxicity via its reactive thiol groups and thereby contributes to virulence of the human pathogenic fungus Aspergillus fumigatus. Self-intoxication of the mold is prevented either by reversible oxidation of reduced gliotoxin or by irreversible conversion to bis(methylthio)gliotoxin. The latter is produced by the S-methyltransferase TmtA and attenuates ETP biosynthesis. Here, we report the crystal structure of TmtA in complex with S-(5'-adenosyl)-l-homocysteine. TmtA features one substrate and one cofactor binding pocket per protein, and thus, bis-thiomethylation of gliotoxin occurs sequentially. Molecular docking of substrates and products into the active site of TmtA reveals that gliotoxin forms specific interactions with the protein surroundings, and free energy calculations indicate that methylation of the C10a-SH group precedes alkylation of the C3-SH site. Altogether, TmtA is well suited to selectively convert gliotoxin and to control its biosynthesis, suggesting that homologous enzymes serve to regulate the production of their toxic natural sulfur compounds in a similar manner.
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Affiliation(s)
- Elke R. Duell
- Center for Integrated Protein
Science Munich (CIPSM) at the Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Manuel Glaser
- Center for Integrated Protein
Science Munich (CIPSM) at the Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Camille Le Chapelain
- Center for Integrated Protein
Science Munich (CIPSM) at the Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Iris Antes
- Center for Integrated Protein
Science Munich (CIPSM) at the Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Michael Groll
- Center for Integrated Protein
Science Munich (CIPSM) at the Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85748 Garching, Germany
| | - Eva M. Huber
- Center for Integrated Protein
Science Munich (CIPSM) at the Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85748 Garching, Germany
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38
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Liu Y, Zhao S, Ding W, Wang P, Yang X, Xu J. Methylthio-Aspochalasins from a Marine-Derived Fungus Aspergillus sp. Mar Drugs 2014; 12:5124-31. [PMID: 25272329 PMCID: PMC4210888 DOI: 10.3390/md12105124] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 09/20/2014] [Accepted: 09/22/2014] [Indexed: 11/26/2022] Open
Abstract
Two novel aspochalasins, 20-β-methylthio-aspochalsin Q (named as aspochalasin V), (1) and aspochalasin W (2), were isolated from culture broth of Aspergillus sp., which was found in the gut of a marine isopod Ligia oceanica. The structures were determined on the basis of NMR and mass spectral data analysis. This is the first report about methylthio-substituted aspochalasin derivatives. Cytotoxicity against the prostate cancer PC3 cell line and HCT116 cell line was assayed using the MTT method. Apochalasin V showed moderate activity at IC50 values of 30.4 and 39.2 μM, respectively.
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Affiliation(s)
- Ying Liu
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, China.
| | - Shizhe Zhao
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, China.
| | - Wanjing Ding
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, China.
| | - Pinmei Wang
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, China.
| | - Xianwen Yang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.
| | - Jinzhong Xu
- Institute of Marine Biology, Ocean College, Zhejiang University, Hangzhou 310058, China.
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39
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Dolan S, Owens R, O’Keeffe G, Hammel S, Fitzpatrick D, Jones G, Doyle S. Regulation of Nonribosomal Peptide Synthesis: bis-Thiomethylation Attenuates Gliotoxin Biosynthesis in Aspergillus fumigatus. ACTA ACUST UNITED AC 2014; 21:999-1012. [DOI: 10.1016/j.chembiol.2014.07.006] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 07/09/2014] [Accepted: 07/21/2014] [Indexed: 01/30/2023]
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40
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Park HB, Lee JK, Lee KR, Kwon HC. Angumycinones A and B, two new angucyclic quinones from Streptomyces sp. KMC004 isolated from acidic mine drainage. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.10.112] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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41
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Zhang Q, Wang SQ, Tang HY, Li XJ, Zhang L, Xiao J, Gao YQ, Zhang AL, Gao JM. Potential allelopathic indole diketopiperazines produced by the plant endophytic Aspergillus fumigatus using the one strain-many compounds method. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:11447-52. [PMID: 24188331 DOI: 10.1021/jf403200g] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
On the basis of the OSMAC (one strain-many compounds) strategy, 14 indole diketopiperazine (DKP) alkaloids, including spirotryprostatins (1-3), tryprostatins (4-6), and cyclotryprostatins (7-14), were isolated from the endophyte Aspergillus fumigatus associated with Melia azedarach L. Their structures were identified by nuclear magnetic resonance and electrospray ionization mass spectrometry data. All the indole DKPs were evaluated for plant growth regulation using the lettuce (Lactuca sativa) seedling growth bioassay, which showed the plant growth influence of the seedling. Among these compounds tested, a tryprostatin-type compound, brevianamide F (6), was identified as a new type of natural potential plant growth inhibitor with a response index (RI) higher than that of the positive control glyphosate, a broad-spectrum systemic herbicide. 6 can also inhibit turnip (Raphanus sativus) shoot and root elongation with RIs of -0.76 and -0.70, respectively, at 120 ppm, and it strongly inhibits amaranth (Amaranthus mangostanus) seedling growth with a high RI of -0.9 at 40 ppm. The structure-allelopathic activity relationship analysis of these isolated alkaloids indicates that tryprostatin-type alkaloids without the C5 prenyl and methoxy group give the most potent inhibition of seedling growth. Brevianamide F (6) could be used to develop a natural eco-friendly herbicide.
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Affiliation(s)
- Qiang Zhang
- Shaanxi Engineering Center of Bioresource Chemistry & Sustainable Utilization, College of Science, Northwest A&F University , Yangling 712100, Shaanxi, China
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42
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DeLorbe JE, Horne D, Jove R, Mennen SM, Nam S, Zhang FL, Overman LE. General approach for preparing epidithiodioxopiperazines from trioxopiperazine precursors: enantioselective total syntheses of (+)- and (-)-gliocladine C, (+)-leptosin D, (+)-T988C, (+)-bionectin A, and (+)-gliocladin A. J Am Chem Soc 2013; 135:4117-28. [PMID: 23452236 DOI: 10.1021/ja400315y] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A common strategy for preparing tryptophan-derived epidithiodioxopiperazine (ETP) natural products containing a hydroxyl substituent adjacent to a quaternary carbon stereocenter is reported. This strategy is exemplified by enantioselective total syntheses of four heptacyclic ETP natural products--gliocladine C (6), leptosin D (7), T988C (8), and bionectin A (9)--starting with the di-(tert-butoxycarbonyl) derivative 17 of the trioxopiperazine natural product gliocladin C, which is readily available by enantioselective chemical synthesis. In addition, total syntheses of the enantiomer of gliocladine C (ent-6) and gliocladin A (11), the di(methylthio) congener of bionectin A, are reported. These syntheses illustrate a synthetic strategy wherein diversity in the dioxopiperazine unit of ETP natural products is introduced at a late stage in a synthetic sequence. In vitro cytotoxicity of compounds in this series against invasive human prostrate (DU145) and melanoma (A2058) cancer cell lines is described and compared to that of chaetocin A (4).
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Affiliation(s)
- John E DeLorbe
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025, USA
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Kawabata T, Uchida C, Kato H, Tsubata T, Takano F, Ohta T. Melanogenesis-Modulating Diketopiperazine Derivatives from Hypocrea spp. HETEROCYCLES 2013. [DOI: 10.3987/com-12-12633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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44
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Ishikura M, Abe T, Choshi T, Hibino S. Simple indole alkaloids and those with a non-rearranged monoterpenoid unit. Nat Prod Rep 2013; 30:694-752. [DOI: 10.1039/c3np20118j] [Citation(s) in RCA: 269] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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45
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Pandey S, Khan S, Singh A, Gauniyal HM, Kumar B, Chauhan PMS. Access to Indole- And Pyrrole-Fused Diketopiperazines via Tandem Ugi-4CR/Intramolecular Cyclization and Its Regioselective Ring-Opening by Intermolecular Transamidation. J Org Chem 2012; 77:10211-27. [DOI: 10.1021/jo3018704] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Shashi Pandey
- Medicinal
and Process Chemistry Division, ‡Sophisticated Analytical Instrument Facility, CSIR-Central Drug Research Institute, Lucknow, 226 001, India
| | - Shahnawaz Khan
- Medicinal
and Process Chemistry Division, ‡Sophisticated Analytical Instrument Facility, CSIR-Central Drug Research Institute, Lucknow, 226 001, India
| | - Awantika Singh
- Medicinal
and Process Chemistry Division, ‡Sophisticated Analytical Instrument Facility, CSIR-Central Drug Research Institute, Lucknow, 226 001, India
| | - Harsh M. Gauniyal
- Medicinal
and Process Chemistry Division, ‡Sophisticated Analytical Instrument Facility, CSIR-Central Drug Research Institute, Lucknow, 226 001, India
| | - Brijesh Kumar
- Medicinal
and Process Chemistry Division, ‡Sophisticated Analytical Instrument Facility, CSIR-Central Drug Research Institute, Lucknow, 226 001, India
| | - Prem M. S. Chauhan
- Medicinal
and Process Chemistry Division, ‡Sophisticated Analytical Instrument Facility, CSIR-Central Drug Research Institute, Lucknow, 226 001, India
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46
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Ha K, Monbaliu JCM, Williams BC, Pillai GG, Ocampo CE, Zeller M, Stevens CV, Katritzky AR. A convenient synthesis of difficult medium-sized cyclic peptides by Staudinger mediated ring-closure. Org Biomol Chem 2012; 10:8055-8. [DOI: 10.1039/c2ob25996f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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47
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Guyonnet M, Baudoin O. Synthesis of Tricyclic Nitrogen Heterocycles by a Sequence of Palladium-Catalyzed N–H and C(sp3)–H Arylations. Org Lett 2011; 14:398-401. [DOI: 10.1021/ol2031763] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mathieu Guyonnet
- CNRS UMR 5246 - Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Claude Bernard Lyon 1, CPE Lyon, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Olivier Baudoin
- CNRS UMR 5246 - Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, Université Claude Bernard Lyon 1, CPE Lyon, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
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