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Khalkho JP, Beck A, Priyanka, Panda B, Chandra R. Microbial allies: exploring fungal endophytes for biosynthesis of terpenoid indole alkaloids. Arch Microbiol 2024; 206:340. [PMID: 38960981 DOI: 10.1007/s00203-024-04067-4] [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: 01/30/2024] [Revised: 06/19/2024] [Accepted: 06/21/2024] [Indexed: 07/05/2024]
Abstract
Terpenoid indole alkaloids (TIAs) are natural compounds found in medicinal plants that exhibit various therapeutic activities, such as antimicrobial, anti-inflammatory, antioxidant, anti-diabetic, anti-helminthic, and anti-tumor properties. However, the production of these alkaloids in plants is limited, and there is a high demand for them due to the increasing incidence of cancer cases. To address this research gap, researchers have focused on optimizing culture media, eliciting metabolic pathways, overexpressing genes, and searching for potential sources of TIAs in organisms other than plants. The insufficient number of essential genes and enzymes in the biosynthesis pathway is the reason behind the limited production of TIAs. As the field of natural product discovery from biological species continues to grow, endophytes are being investigated more and more as potential sources of bioactive metabolites with a variety of chemical structures. Endophytes are microorganisms (fungi, bacteria, archaea, and actinomycetes), that exert a significant influence on the metabolic pathways of both the host plants and the endophytic cells. Bio-prospection of fungal endophytes has shown the discovery of novel, high-value bioactive compounds of commercial significance. The discovery of therapeutically significant secondary metabolites has been made easier by endophytic entities' abundant but understudied diversity. It has been observed that fungal endophytes have better intermediate processing ability due to cellular compartmentation. This paper focuses on fungal endophytes and their metabolic ability to produce complex TIAs, recent advancements in this area, and addressing the limitations and future perspectives related to TIA production.
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Affiliation(s)
- Jaya Prabha Khalkho
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, 835215, India
| | - Abhishek Beck
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, 835215, India
| | - Priyanka
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, 835215, India
| | - Banishree Panda
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, 835215, India
| | - Ramesh Chandra
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, 835215, India.
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2
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Akmukhanova NR, Leong YK, Seiilbek SN, Konysbay A, Zayadan BK, Sadvakasova AK, Sarsekeyeva FK, Bauenova MO, Bolatkhan K, Alharby HF, Chang JS, Allakhverdiev SI. Eco-friendly biopesticides derived from CO 2-Fixing cyanobacteria. ENVIRONMENTAL RESEARCH 2023; 239:117419. [PMID: 37852466 DOI: 10.1016/j.envres.2023.117419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/10/2023] [Accepted: 10/15/2023] [Indexed: 10/20/2023]
Abstract
There is currently an escalating global demand for the utilization of plant and natural extracts as pesticides due to their minimal health risks. Cyanobacteria are highly valuable organisms with significant potential in agriculture and are of great interest for the development of agrochemical agents as biopesticides. The flexibility and adaptability of Cyanobacteria to various environmental conditions are facilitated by the presence of specialized enzymes involved in the production of biologically active diverse secondary metabolites, including alkaloids, lipopolysaccharides, non-protein amino acids, non-ribosomal peptides, polyketides, terpenoids, and others. This review focuses on the metabolites synthesized from cyanobacteria that have demonstrated effectiveness as antibacterial, antiviral, antifungal agents, insecticides, herbicides, and more. The potential role of cyanobacteria as an alternative to chemical pesticides for environmental conservation is discussed.
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Affiliation(s)
- Nurziya R Akmukhanova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
| | - Yoong Kit Leong
- Department of Chemical and Materials Engineering, Tunghai University, Taichung, 407, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung, 407, Taiwan
| | - Sandugash N Seiilbek
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
| | - Aigerim Konysbay
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
| | - Bolatkhan K Zayadan
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
| | - Assemgul K Sadvakasova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
| | - Fariza K Sarsekeyeva
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
| | - Meruyert O Bauenova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
| | - Kenzhegul Bolatkhan
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty, 050038, Kazakhstan
| | - Hesham F Alharby
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Jo-Shu Chang
- Department of Chemical and Materials Engineering, Tunghai University, Taichung, 407, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung, 407, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan, 701, Taiwan; Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li, 32003, Taiwan.
| | - Suleyman I Allakhverdiev
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow, 127276, Russia; Faculty of Engineering and Natural Sciences, Bahcesehir University, Istanbul, Turkey.
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3
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Wang J, Yang JY, Durairaj P, Wang W, Tang S, Wang D, Cai CY, Jia AQ. Developing 3-(2-Isocyano-6-methylbenzyl)-1 H-indole Derivatives to Enhance the Susceptibility of Serratia marcescens by Occluding Quorum Sensing. ACS Infect Dis 2023; 9:2607-2621. [PMID: 37971550 PMCID: PMC10715256 DOI: 10.1021/acsinfecdis.3c00433] [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: 08/22/2023] [Revised: 10/29/2023] [Accepted: 11/01/2023] [Indexed: 11/19/2023]
Abstract
Quorum sensing (QS) inhibition is recognized as a novel antimicrobial target for infections caused by drug-resistant pathogens and is an attractive strategy for antipathogenic agent development. We designed and synthesized three parts of 3-(2-isocyanobenzyl)-1H-indole derivatives and tested their activity as novel quorum sensing inhibitors (QSIs). 3-(2-Isocyanobenzyl)-1H-indole derivatives demonstrated promising QS, biofilms, and prodigiosin inhibitory activities against Serratia marcescens at subminimum inhibitory concentrations (sub-MICs). In particular, 3-(2-isocyano-6-methylbenzyl)-1H-indole (IMBI, 32) was identified as the best candidate based on several screening assays, including biofilm and prodigiosin inhibition. Further studies demonstrated that exposure to IMBI at 1.56 μg/mL to S. marcescens NJ01 significantly inhibited the formation of biofilms by 42%. The IMBI treatment on S. marcescens NJ01 notably enhanced the susceptibility of the formed biofilms, destroying the architecture of the biofilms by up to 40%, as evidenced by scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM). For interference of virulence factors in S. marcescens NJ01, IMBI at 3.12 μg/mL inhibited the activity of protease and extracellular polysaccharides (EPS) by 17% and 51%, respectively, which were higher than that of the positive control vanillic acid (VAN). Furthermore, IMBI downregulated the expression of QS- and biofilm-related genes fimA, bsmA, pigP, flhC, rssB, fimC, and rsmA by 1.02- to 2.74-fold. To confirm these findings, molecular docking was performed, which indicated that the binding of IMBI to SmaR, RhlI, RhlR, LasR, and CviR could antagonize the expression of QS-linked traits. In addition, molecular dynamic simulations (MD) and energy calculations indicated that the binding of receptors with IMBI was extremely stable. The biofilms of S. marcescens NJ01 were markedly reduced by 50% when IMBI (0.39 μg/mL) was combined with kanamycin (0.15 μg/mL). In conclusion, this study highlights the potency of IMBI in inhibiting the virulence factors of S. marcescens. IMBI has all the potential to be developed as an effective and efficient QS inhibitor and antibiofilm agent in order to restore or improve antimicrobial drug sensitivity.
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Affiliation(s)
- Jiang Wang
- Key
Laboratory of Tropical Biological Resources of Ministry of Education,
School of Pharmaceutical Sciences, Hainan
University, Haikou 570228, China
- Hainan
General Hospital, Hainan Affiliated Hospital
of Hainan Medical University, Haikou 570311, China
- Center
for Translational Research, Shenzhen Bay
Laboratory, Shenzhen 518132, China
| | - Jing-Yi Yang
- Key
Laboratory of Tropical Biological Resources of Ministry of Education,
School of Pharmaceutical Sciences, Hainan
University, Haikou 570228, China
| | - Pradeepraj Durairaj
- Center
for Translational Research, Shenzhen Bay
Laboratory, Shenzhen 518132, China
| | - Wei Wang
- Key
Laboratory of Tropical Biological Resources of Ministry of Education,
School of Pharmaceutical Sciences, Hainan
University, Haikou 570228, China
| | - Shi Tang
- Key
Laboratory of Tropical Biological Resources of Ministry of Education,
School of Pharmaceutical Sciences, Hainan
University, Haikou 570228, China
| | - Dayong Wang
- Key
Laboratory of Tropical Biological Resources of Ministry of Education,
School of Pharmaceutical Sciences, Hainan
University, Haikou 570228, China
| | - Chao-Yun Cai
- Center
for Translational Research, Shenzhen Bay
Laboratory, Shenzhen 518132, China
| | - Ai-Qun Jia
- Hainan
General Hospital, Hainan Affiliated Hospital
of Hainan Medical University, Haikou 570311, China
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4
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Ricciardelli A, Pollio A, Costantini M, Zupo V. Harmful and beneficial properties of cyanotoxins: Two sides of the same coin. Biotechnol Adv 2023; 68:108235. [PMID: 37567398 DOI: 10.1016/j.biotechadv.2023.108235] [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: 09/08/2022] [Revised: 07/25/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
Cyanotoxins are by definition "harmful agents" produced by cyanobacteria. Their toxicity has been extensively studied and reviewed over the years. Cyanotoxins have been commonly classified, based on their poisonous effects on mammals, into three main classes, neurotoxins, hepatotoxins and dermatotoxins, and, considering their chemical features, mainly identified as peptides, alkaloids and lipopolysaccharides. Here we propose a broader subdivision of cyanotoxins into eight distinct classes, taking into account their molecular structures, biosynthesis and modes of action: alkaloids, non-ribosomal peptides, polyketides, non-protein amino acids, indole alkaloids, organophosphates, lipopeptides and lipoglycans. For each class, the structures and primary mechanisms of toxicity of the main representative cyanotoxins are reported. Despite their powerful biological activities, only recently scientists have considered the biotechnological potential of cyanotoxins, and their applications both in medical and in industrial settings, even if only a few of these have reached the biotech market. In this perspective, we discuss the potential uses of cyanotoxins as anticancer, antimicrobial, and biocidal agents, as common applications for cytotoxic compounds. Furthermore, taking into account their mechanisms of action, we describe peculiar potential bioactivities for several cyanotoxin classes, such as local anaesthetics, antithrombotics, neuroplasticity promoters, immunomodulating and antifouling agents. In this review, we aim to stimulate research on the potential beneficial roles of cyanotoxins, which require interdisciplinary cooperation to facilitate the discovery of innovative biotechnologies.
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Affiliation(s)
- Annarita Ricciardelli
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte S. Angelo, via Cinthìa, 80125 Naples, Italy.
| | - Antonino Pollio
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte S. Angelo, via Cinthìa, 80125 Naples, Italy.
| | - Maria Costantini
- Ecosustainable Marine Biotechnology Department, Stazione Zoologica Anton Dohrn, Via Ammiraglio Ferdinando Acton, 80133 Naples, Italy.
| | - Valerio Zupo
- Ecosustainable Marine Biotechnology Department, Stazione Zoologica Anton Dohrn, Ischia Marine Centre, Punta San Pietro, 80077 Naples, Italy.
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5
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Milzarek TM, Stevanovic M, Milivojevic D, Vojnovic S, Iliasov D, Wolf D, Mascher T, Nikodinovic-Runic J, Gulder TAM. Antibiotic Potential of the Ambigol Cyanobacterial Natural Product Class and Simplified Synthetic Analogs. ACS Infect Dis 2023; 9:1941-1948. [PMID: 37655776 DOI: 10.1021/acsinfecdis.3c00232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
The ambigols are cyanobacterial natural products characterized by three polychlorinated aromatic building blocks connected by biaryl and biaryl ether bridges. All ambigols known to date possess promising biological activities. Most significantly, ambigol A was reported to have antibacterial activity against Gram-positive bacteria, such as Bacillus megaterium and B. subtilis. We established a diverse compound library for in-depth biological evaluation building on our previous bio- and total synthetic research on this natural product family. To explore the antimicrobial potential in detail and to determine initial structure-activity relationships of this product class, a large set of dimeric and trimeric compounds were screened against selected bacterial and Candida target strains. Our results reveal exceptional antibiotic activity of the ambigols, especially against challenging clinical isolates.
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Affiliation(s)
- Tobias M Milzarek
- Chair of Technical Biochemistry, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
| | - Milena Stevanovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Dusan Milivojevic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Sandra Vojnovic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Denis Iliasov
- Chair of General Microbiology, Technische Universität Dresden, Zellescher Weg 20b, 01217 Dresden, Germany
| | - Diana Wolf
- Chair of General Microbiology, Technische Universität Dresden, Zellescher Weg 20b, 01217 Dresden, Germany
| | - Thorsten Mascher
- Chair of General Microbiology, Technische Universität Dresden, Zellescher Weg 20b, 01217 Dresden, Germany
| | - Jasmina Nikodinovic-Runic
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11000 Belgrade, Serbia
| | - Tobias A M Gulder
- Chair of Technical Biochemistry, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Department of Natural Product Biotechnology, Helmholtz Centre for Infection Research (HZI), Saarland University, 66123 Saarbrücken, Germany
- Department of Pharmacy, Saarland University, 66123 Saarbrücken, Germany
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6
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do Amaral SC, Xavier LP, Vasconcelos V, Santos AV. Cyanobacteria: A Promising Source of Antifungal Metabolites. Mar Drugs 2023; 21:359. [PMID: 37367684 PMCID: PMC10300848 DOI: 10.3390/md21060359] [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: 04/21/2023] [Revised: 05/23/2023] [Accepted: 05/27/2023] [Indexed: 06/28/2023] Open
Abstract
Cyanobacteria are a rich source of secondary metabolites, and they have received a great deal of attention due to their applicability in different industrial sectors. Some of these substances are known for their notorious ability to inhibit fungal growth. Such metabolites are very chemically and biologically diverse. They can belong to different chemical classes, including peptides, fatty acids, alkaloids, polyketides, and macrolides. Moreover, they can also target different cell components. Filamentous cyanobacteria have been the main source of these compounds. This review aims to identify the key features of these antifungal agents, as well as the sources from which they are obtained, their major targets, and the environmental factors involved when they are being produced. For the preparation of this work, a total of 642 documents dating from 1980 to 2022 were consulted, including patents, original research, review articles, and theses.
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Affiliation(s)
- Samuel Cavalcante do Amaral
- Laboratory of Biotechnology of Enzymes and Biotransformation, Biological Sciences Institute, Federal University of Pará, Belém 66075-110, Brazil;
| | - Luciana Pereira Xavier
- Laboratory of Biotechnology of Enzymes and Biotransformation, Biological Sciences Institute, Federal University of Pará, Belém 66075-110, Brazil;
| | - Vítor Vasconcelos
- CIIMAR/CIMAR, Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros do Porto de Leixões, University of Porto, 4450-208 Matosinhos, Portugal;
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, Edifício FC4, 4169-007 Porto, Portugal
| | - Agenor Valadares Santos
- Laboratory of Biotechnology of Enzymes and Biotransformation, Biological Sciences Institute, Federal University of Pará, Belém 66075-110, Brazil;
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7
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Soares LTXMG, Basso MAF, Dos Santos CMR, Ali A, Vasconcelos LG, Dall'Oglio EL, Sampaio OM, Vieira LCC. Binding Properties of Photosynthetic Herbicides: Photosynthetic Activity and Molecular Docking Approach towards 1,4-Dihydropyridines Derivatives. Chem Biodivers 2022; 19:e202200586. [PMID: 36383100 DOI: 10.1002/cbdv.202200586] [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: 06/17/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 11/17/2022]
Abstract
In the current work, we describe the synthesis of 1,4-dihydropyridine (1,4-DHP) derivatives via Hantzsch multicomponent reaction and their evaluation as photosystem II (PSII) inhibitors through chlorophyll a fluorescence bioassay. Among all the compounds tested, 1,1'-(2,4,6-trimethyl-1,4-dihydropyridine-3,5-diyl)bis(ethan-1-one) (4b) showed best results, reducing the parameters performance index on absorption basis (PIabs ) and electron transport per reaction center by 61 % and 49 %, respectively, as compared to the control. These results indicate the inhibitory activity of PSII over the electron transport chain. Additionally, a molecular docking approach using the protein D1 (PDB code 4V82) was performed in order to assess the structure-activity relationship among the 1,4-DHP derivatives over the PSII, which revealed that both, size of the group at position 4 and the carbonyl groups at the dihydropyridine ring are important for the ligand's interaction, particularly for the hydrogen-bonding interaction with the residues His215, Ser264, and Phe265. Thus, the optimization of these molecular features is the aim of our research group to extend the knowledge of PSII electron chain inhibitors and the establishment of new potent bioactive molecular scaffolds.
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Affiliation(s)
- Luís T X M G Soares
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá-MT, 78060-900, Brazil
| | - Marcelo A F Basso
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá-MT, 78060-900, Brazil
| | - Clarice M R Dos Santos
- Engineering Faculty, Federal University of Mato Grosso, Várzea Grande-MT, 78060-900, Brazil
| | - Akbar Ali
- Department of Chemistry, Government College University, Faisalabad, 38000, Pakistan
| | - Leonardo G Vasconcelos
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá-MT, 78060-900, Brazil
| | - Evandro L Dall'Oglio
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá-MT, 78060-900, Brazil
| | - Olívia M Sampaio
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá-MT, 78060-900, Brazil
| | - Lucas C C Vieira
- Department of Chemistry, Federal University of Mato Grosso, Cuiabá-MT, 78060-900, Brazil
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8
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Gao Y, Chen Y, Luo Y, Liu J, Tian P, Nan Z, Zhou Q. The microbiota diversity of Festuca sinensis seeds in Qinghai-Tibet Plateau and their relationship with environments. Front Microbiol 2022; 13:956489. [PMID: 35992719 PMCID: PMC9382023 DOI: 10.3389/fmicb.2022.956489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/01/2022] [Indexed: 11/15/2022] Open
Abstract
A total of 14 Festuca sinensis seed lots were collected from different geographical locations on the Qinghai-Tibet Plateau to study the seed microbiota and determine the abiotic (temperature, precipitation, and elevation) and biotic (Epichloë sinensis infection rate) factors likely to shape the seed microbiome. The 14 seed lots had different bacterial and fungal structures and significantly different diversities (p < 0.05). The α-diversity indices of the bacteria were significantly correlated with precipitation (p < 0.05), whereas those of the fungi were significantly correlated with temperature (p < 0.05). Microbiota analysis showed that Proteobacteria, Cyanobacteria, and Bacteroidetes were the most abundant bacteria at the phylum level in the seeds, and Ascomycota and Basidiomycota were the most abundant fungi. β-diversity analysis suggested large differences in the microbial communities of each sample. Redundancy analysis showed that temperature and precipitation were the main environmental factors that drive variations in the microbial community, at the medium-high elevation (3,000–4,500 m), the impact of temperature and precipitation on microbial community is different, and the other elevations that effect on microbial community were basically identical. Spearman's correlation analysis showed that the relative abundances of the most abundant bacterial phyla were significantly correlated with temperature (p < 0.05), whereas those of the most abundant fungal phyla were significantly correlated with precipitation (p < 0.05). E. sinensis infection rates were significantly correlated with elevation and temperature (p < 0.05). These results suggest that temperature and precipitation are the key factors driving the microbial community, that temperature and elevation also had a great influence on the E. sinensis infection rate, and that environmental factors (temperature and elevation) may further affect the microbial community by regulating the E. sinensis infection rate.
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Affiliation(s)
- Yue Gao
- State Key Laboratory of Grassland Agro-Ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Youjun Chen
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, China
| | - Yang Luo
- State Key Laboratory of Grassland Agro-Ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Junying Liu
- State Key Laboratory of Grassland Agro-Ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Pei Tian
- State Key Laboratory of Grassland Agro-Ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
- *Correspondence: Pei Tian
| | - Zhibiao Nan
- State Key Laboratory of Grassland Agro-Ecosystems, Lanzhou University, Lanzhou, China
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Lanzhou University, Lanzhou, China
- College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Qingping Zhou
- Institute of Qinghai-Tibetan Plateau, Southwest Minzu University, Chengdu, China
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9
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Patra SR, Sangma SW, Padhy AK, Bhunia S. Oxidative Addition to the N-C Bond Vs Formation of the Zwitterionic Intermediate in Platinum(II)-Catalyzed Intramolecular Annulation of Alkynes to Form Indoles: Mechanistic Studies and Reaction Scope. J Org Chem 2022; 87:9714-9722. [PMID: 35860990 DOI: 10.1021/acs.joc.2c00750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, Pt(II)-catalyzed intramolecular translocation annulation of ortho-alkynylamides to the formation of indoles is presented, where a proposed intermediacy of zwitterionic intermediate has been substantiated over the oxidative addition. We focused our attention on Pt(II)-catalyzed aminoacylation of alkynes both theoretically and experimentally using low boiling solvent where the formation of deacylation product was suppressed simultaneously. One-step intramolecular [1,3]-acyl migration from the zwitterionic intermediate is highly unlikely, which imparts a high energy barrier of +99.0 kcal mol-1. Another possible approach involving oxidative addition to the N-C bond, migratory insertion to alkyne, and subsequent reductive elimination is also explored through DFT studies to justify the reaction consequence. However, based on the computational studies, it is suggested that initial zwitterion formation is highly favored over oxidative addition. We suggest the formation of an acylium intermediate, which can further react with indol-3-ylplatinum species in an intramolecular manner, albeit within the same solvent cage to form 3-acyl indoles.
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Affiliation(s)
- Snigdha Rani Patra
- Department of Chemistry, Central University of Jharkhand, Ranchi 835205, Jharkhand, India
| | - Simon Watre Sangma
- Department of Chemistry, Central University of Jharkhand, Ranchi 835205, Jharkhand, India
| | - Arun Kumar Padhy
- Department of Chemistry, Central University of Jharkhand, Ranchi 835205, Jharkhand, India
| | - Sabyasachi Bhunia
- Department of Chemistry, Central University of Jharkhand, Ranchi 835205, Jharkhand, India
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10
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Zhu W, Zhang Q, Bao X, Lin Y, Xu G, Zhou H. Nucleophilic functionalizations of indole derivatives using the aromatic Pummerer reaction. Org Biomol Chem 2022; 20:3955-3959. [PMID: 35471233 DOI: 10.1039/d2ob00627h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Because of the electron-rich property of indoles, direct functionalization strategies towards indoles generally involve electrophilic substitutions. In this paper, an efficient protocol for nucleophilic hydroxylation, halogenation and esterification of indoles via the aromatic Pummerer process was developed. With the advantages of readily accessible starting materials, simple operation and mild conditions, this protocol should be of interest to synthetic scientists.
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Affiliation(s)
- Wen Zhu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, People's Republic of China. .,College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, China
| | - Qianyun Zhang
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, China
| | - Xingping Bao
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, China
| | - Yanfei Lin
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, China
| | - Guangyu Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, People's Republic of China.
| | - Hongwei Zhou
- College of Biological, Chemical Science and Engineering, Jiaxing University, 118 Jiahang Road, Jiaxing, China
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11
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Verma S, Thapa S, Siddiqui N, Chakdar H. Cyanobacterial secondary metabolites towards improved commercial significance through multiomics approaches. World J Microbiol Biotechnol 2022; 38:100. [PMID: 35486205 DOI: 10.1007/s11274-022-03285-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 04/13/2022] [Indexed: 11/28/2022]
Abstract
Cyanobacteria are ubiquitous photosynthetic prokaryotes responsible for the oxygenation of the earth's reducing atmosphere. Apart from oxygen they are producers of a myriad of bioactive metabolites with diverse complex chemical structures and robust biological activities. These secondary metabolites are known to have a variety of medicinal and therapeutic applications ranging from anti-microbial, anti-viral, anti-inflammatory, anti-cancer, and immunomodulating properties. The present review discusses various aspects of secondary metabolites viz. biosynthesis, types and applications, which highlights the repertoire of bioactive constituents they harbor. Majority of these products have been produced from only a handful of genera. Moreover, with the onset of various OMICS approaches, cyanobacteria have become an attractive chassis for improved secondary metabolites production. Also the intervention of synthetic biology tools such as gene editing technologies and a variety of metabolomics and fluxomics approaches, used for engineering cyanobacteria, have significantly enhanced the production of secondary metabolites.
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Affiliation(s)
- Shaloo Verma
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Kushmaur, Mau, Uttar Pradesh, 275103, India.,Amity Institute of Biotechnology (AIB), Amity University, Noida, Uttar Pradesh, 201313, India
| | - Shobit Thapa
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Kushmaur, Mau, Uttar Pradesh, 275103, India
| | - Nahid Siddiqui
- Amity Institute of Biotechnology (AIB), Amity University, Noida, Uttar Pradesh, 201313, India
| | - Hillol Chakdar
- ICAR-National Bureau of Agriculturally Important Microorganisms (NBAIM), Kushmaur, Mau, Uttar Pradesh, 275103, India.
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12
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Inam F, Mumtaz AS, Kaleem M, Imran M. Morphogenetic variation and assorted biological activities in true branching Nostocales strains of Cholistan Oasis, Pakistan. J Basic Microbiol 2022; 62:634-643. [PMID: 35292992 DOI: 10.1002/jobm.202100640] [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: 12/10/2021] [Revised: 02/26/2022] [Accepted: 03/05/2022] [Indexed: 11/09/2022]
Abstract
From the oasis of Cholistan, true branching heterocystous cyanobacterial strains were studied for, the cell arrangement in primary branches being mono- or bi-seriate; shape of cells in main filament large and irregular; profused secondary branching emerging on one or both sides and tapering along their length. In these observed traits, two clear morphological taxa were recognized, both well assorted from the previously described species of the genus Westiellopsis. Both strains showed culturing response and studied for antibacterial, cytotoxic and anticancer potentials. The strain derived from the site B-10 provenance exhibited antibacterial activity against Pseudomonas (18 mm); Klebsiella (15 mm), Staphylococcus (22 mm). On the contrary, the strain of site A-44 showed no activity against any of the above-mentioned bacterial strains. The cytotoxicity assay for the strain of B-10 site showed a 36% larval mortality, whereas the strain A-44 showed 24% larval mortality. Performance of the strain B-10 in MTT assay (assessed on HCT-116 cell lines) revealed a dose-dependent activity: @200 µg/ml, 100 µg/ml, 50 µg/ml and 25 µg/ml; achieving a growth inhibition of 50.15%, 40.22%, 33.72% and 10.21%, respectively; and the strain of A-44 could only exhibit a 30.06% growth inhibition @200 µg/ml. The 16S rDNA sequencing revealed the sequence homology with Neowestiellopsis. Based on data presented here we report two diverse taxa of true branching Nostocales from Cholistan oasis, Pakistan. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Farooq Inam
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Abdul Samad Mumtaz
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Kaleem
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Imran
- Department of Microbiology & Molecular Genetics, Quaid-e-Azam Campus, University of the Punjab, Lahore, Pakistan
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13
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Sirajunnisa AR, Surendhiran D, Kozani PS, Kozani PS, Hamidi M, Cabrera-Barjas G, Delattre C. An overview on the role of microalgal metabolites and pigments in apoptosis induction against copious diseases. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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14
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Nandagopal P, Steven AN, Chan LW, Rahmat Z, Jamaluddin H, Mohd Noh NI. Bioactive Metabolites Produced by Cyanobacteria for Growth Adaptation and Their Pharmacological Properties. BIOLOGY 2021; 10:1061. [PMID: 34681158 PMCID: PMC8533319 DOI: 10.3390/biology10101061] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/10/2021] [Accepted: 10/14/2021] [Indexed: 02/08/2023]
Abstract
Cyanobacteria are the most abundant oxygenic photosynthetic organisms inhabiting various ecosystems on earth. As with all other photosynthetic organisms, cyanobacteria release oxygen as a byproduct during photosynthesis. In fact, some cyanobacterial species are involved in the global nitrogen cycles by fixing atmospheric nitrogen. Environmental factors influence the dynamic, physiological characteristics, and metabolic profiles of cyanobacteria, which results in their great adaptation ability to survive in diverse ecosystems. The evolution of these primitive bacteria resulted from the unique settings of photosynthetic machineries and the production of bioactive compounds. Specifically, bioactive compounds play roles as regulators to provide protection against extrinsic factors and act as intracellular signaling molecules to promote colonization. In addition to the roles of bioactive metabolites as indole alkaloids, terpenoids, mycosporine-like amino acids, non-ribosomal peptides, polyketides, ribosomal peptides, phenolic acid, flavonoids, vitamins, and antimetabolites for cyanobacterial survival in numerous habitats, which is the focus of this review, the bioactivities of these compounds for the treatment of various diseases are also discussed.
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Affiliation(s)
- Pavitra Nandagopal
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (P.N.); (L.-W.C.); (Z.R.); (H.J.)
| | - Anthony Nyangson Steven
- Department of Chemistry, Faculty of Science, Universiti Teknologi Malaysia, Skudai 81310, Malaysia;
| | - Liong-Wai Chan
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (P.N.); (L.-W.C.); (Z.R.); (H.J.)
| | - Zaidah Rahmat
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (P.N.); (L.-W.C.); (Z.R.); (H.J.)
- Institute of Bioproduct Development, Universiti Teknologi Malaysia, Skudai 81310, Malaysia
| | - Haryati Jamaluddin
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (P.N.); (L.-W.C.); (Z.R.); (H.J.)
| | - Nur Izzati Mohd Noh
- Department of Biosciences, Faculty of Science, Universiti Teknologi Malaysia, Skudai 81310, Malaysia; (P.N.); (L.-W.C.); (Z.R.); (H.J.)
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15
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Van Hecke K, Benton TR, Casper M, Mauldin D, Drake B, Morgan JB. Palladium-Catalyzed, Enantioselective Desymmetrization of N-Acylaziridines with Indoles. Org Lett 2021; 23:7916-7920. [PMID: 34609884 PMCID: PMC9022218 DOI: 10.1021/acs.orglett.1c02914] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ring opening reactions of meso-aziridines generate chiral amine derivatives where the control of stereochemistry is possible through enantioselective catalysis. We report the use of a diphosphine-palladium(II) catalyst for the highly enantioselective desymmetrization of N-acylaziridines with indoles. The β-tryptamine products are isolated in moderate to high yield across a range of indole and aziridine substitution patterns. The synthetic utility of β-tryptamine products is demonstrated by conversion to the brominated pyrroloindoline derivative.
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Affiliation(s)
- Kinney Van Hecke
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North Carolina 28403, United States
| | - Tyler R Benton
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North Carolina 28403, United States
| | - Michael Casper
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North Carolina 28403, United States
| | - Dustin Mauldin
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North Carolina 28403, United States
| | - Brandon Drake
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North Carolina 28403, United States
| | - Jeremy B Morgan
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North Carolina 28403, United States
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16
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Cyanobacteria and Cyanotoxins in a Changing Environment: Concepts, Controversies, Challenges. WATER 2021. [DOI: 10.3390/w13182463] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Concern is widely being published that the occurrence of toxic cyanobacteria is increasing in consequence of climate change and eutrophication, substantially threatening human health. Here, we review evidence and pertinent publications to explore in which types of waterbodies climate change is likely to exacerbate cyanobacterial blooms; whether controlling blooms and toxin concentrations requires a balanced approach of reducing not only the concentrations of phosphorus (P) but also those of nitrogen (N); how trophic and climatic changes affect health risks caused by toxic cyanobacteria. We propose the following for further discussion: (i) Climate change is likely to promote blooms in some waterbodies—not in those with low concentrations of P or N stringently limiting biomass, and more so in shallow than in stratified waterbodies. Particularly in the latter, it can work both ways—rendering conditions for cyanobacterial proliferation more favourable or less favourable. (ii) While N emissions to the environment need to be reduced for a number of reasons, controlling blooms can definitely be successful by reducing only P, provided concentrations of P can be brought down to levels sufficiently low to stringently limit biomass. Not the N:P ratio, but the absolute concentration of the limiting nutrient determines the maximum possible biomass of phytoplankton and thus of cyanobacteria. The absolute concentrations of N or P show which of the two nutrients is currently limiting biomass. N can be the nutrient of choice to reduce if achieving sufficiently low concentrations has chances of success. (iii) Where trophic and climate change cause longer, stronger and more frequent blooms, they increase risks of exposure, and health risks depend on the amount by which concentrations exceed those of current WHO cyanotoxin guideline values for the respective exposure situation. Where trophic change reduces phytoplankton biomass in the epilimnion, thus increasing transparency, cyanobacterial species composition may shift to those that reside on benthic surfaces or in the metalimnion, changing risks of exposure. We conclude that studying how environmental changes affect the genotype composition of cyanobacterial populations is a relatively new and exciting research field, holding promises for understanding the biological function of the wide range of metabolites found in cyanobacteria, of which only a small fraction is toxic to humans. Overall, management needs case-by-case assessments focusing on the impacts of environmental change on the respective waterbody, rather than generalisations.
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17
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Al-Yousef HM, Amina M. Phytoconstituents and pharmacological activities of cyanobacterium Fischerella ambigua. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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18
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Abstract
Covering: up to mid-2020 Terpenoids, also called isoprenoids, are the largest and most structurally diverse family of natural products. Found in all domains of life, there are over 80 000 known compounds. The majority of characterized terpenoids, which include some of the most well known, pharmaceutically relevant, and commercially valuable natural products, are produced by plants and fungi. Comparatively, terpenoids of bacterial origin are rare. This is counter-intuitive to the fact that recent microbial genomics revealed that almost all bacteria have the biosynthetic potential to create the C5 building blocks necessary for terpenoid biosynthesis. In this review, we catalogue terpenoids produced by bacteria. We collected 1062 natural products, consisting of both primary and secondary metabolites, and classified them into two major families and 55 distinct subfamilies. To highlight the structural and chemical space of bacterial terpenoids, we discuss their structures, biosynthesis, and biological activities. Although the bacterial terpenome is relatively small, it presents a fascinating dichotomy for future research. Similarities between bacterial and non-bacterial terpenoids and their biosynthetic pathways provides alternative model systems for detailed characterization while the abundance of novel skeletons, biosynthetic pathways, and bioactivies presents new opportunities for drug discovery, genome mining, and enzymology.
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Affiliation(s)
- Jeffrey D Rudolf
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
| | - Tyler A Alsup
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
| | - Baofu Xu
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
| | - Zining Li
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
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19
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Bunn BM, Xu M, Webb CM, Viswanathan R. Biocatalysts from cyanobacterial hapalindole pathway afford antivirulent isonitriles against MRSA. J Biosci 2021. [DOI: 10.1007/s12038-021-00156-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Hohlman RM, Newmister SA, Sanders JN, Khatri Y, Li S, Keramati NR, Lowell AN, Houk KN, Sherman DH. Structural diversification of hapalindole and fischerindole natural products via cascade biocatalysis. ACS Catal 2021; 11:4670-4681. [PMID: 34354850 DOI: 10.1021/acscatal.0c05656] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Hapalindoles and related compounds (ambiguines, fischerindoles, welwitindolinones) are a diverse class of indole alkaloid natural products. They are typically isolated from the Stigonemataceae order of cyanobacteria and possess a broad scope of biological activities. Recently the biosynthetic pathway for assembly of these metabolites has been elucidated. In order to generate the core ring system, L-tryptophan is converted into the cis-indole isonitrile subunit before being prenylated with geranyl pyrophosphate at the C-3 position. A class of cyclases (Stig) catalyzes a three-step process including a Cope rearrangement, 6-exo-trig cyclization and electrophilic aromatic substitution to create a polycyclic core. Formation of the initial alkaloid is followed by diverse late-stage tailoring reactions mediated by additional biosynthetic enzymes to give rise to the wide array of structural variations observed in this compound class. Herein, we demonstrate the versatility and utility of the Fam prenyltransferase and Stig cyclases toward core structural diversification of this family of indole alkaloids. Through synthesis of cis-indole isonitrile subunit derivatives, and aided by protein engineering and computational analysis, we have employed cascade biocatalysis to generate a range of derivatives, and gained insights into the basis for substrate flexibility in this system.
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Affiliation(s)
| | | | - Jacob N. Sanders
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | | | | | | | | | - K. N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - David H. Sherman
- Department of Microbiology & Immunology, Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-2216, United States
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21
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Affiliation(s)
- José M. Alonso
- Departamento de Química Orgánica Universidad Complutense de Madrid Avda. Complutense s/n 28040 Madrid Spain
| | - María Paz Muñoz
- School of Chemistry University of East Anglia Earlham Road 4 7TJ Norwich, NR UK
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22
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Khatri Y, Hohlman RM, Mendoza J, Li S, Lowell AN, Asahara H, Sherman DH. Multicomponent Microscale Biosynthesis of Unnatural Cyanobacterial Indole Alkaloids. ACS Synth Biol 2020; 9:1349-1360. [PMID: 32302487 PMCID: PMC7323787 DOI: 10.1021/acssynbio.0c00038] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Genome sequencing and bioinformatics tools have facilitated the identification and expression of an increasing number of cryptic biosynthetic gene clusters (BGCs). However, functional analysis of all components of a metabolic pathway to precisely determine biocatalytic properties remains time-consuming and labor intensive. One way to speed this process involves microscale cell-free protein synthesis (CFPS) for direct gene to biochemical function analysis, which has rarely been applied to study multicomponent enzymatic systems in specialized metabolism. We sought to establish an in vitro transcription/translation (TT)-assay to assess assembly of cyanobacterial-derived hapalindole-type natural products (cNPs) because of their diverse bioactivity profiles and complex structural diversity. Using a CFPS system including a plasmid bearing famD2 prenyltransferase from Fischerella ambigua UTEX 1903, we showed production of the central prenylated intermediate (3GC) in the presence of exogenous geranyl-pyrophosphate (GPP) and cis-indole isonitrile. Further addition of a plasmid bearing the famC1 Stig cyclase resulted in synthesis of both FamD2 and FamC1 enzymes, which was confirmed by proteomics analysis, and catalyzed assembly of 12-epi-hapalindole U. Further combinations of Stig cyclases (FamC1-C4) produced hapalindole U and hapalindole H, while FisC identified from Fischerella sp. SAG46.79 generated 12-epi-fischerindole U. The CFPS system was further employed to screen six unnatural halogenated cis-indole isonitrile substrates using FamC1 and FisC, and the reactions were scaled-up using chemoenzymatic synthesis and identified as 5- and 6-fluoro-12-epi-hapalindole U, and 5- and 6-fluoro-12-epi-fischerindole U, respectively. This approach represents an effective, high throughput strategy to determine the functional role of biosynthetic enzymes from diverse natural product BGCs.
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Affiliation(s)
| | | | | | | | | | - Haruichi Asahara
- New England Biolabs, Inc., Ipswich, Massachusetts 01938, United States
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23
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Connon R, Guiry PJ. Recent advances in the development of one-pot/multistep syntheses of 3,4-annulated indoles. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151696] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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24
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Rudolf JD, Chang CY. Terpene synthases in disguise: enzymology, structure, and opportunities of non-canonical terpene synthases. Nat Prod Rep 2020; 37:425-463. [PMID: 31650156 PMCID: PMC7101268 DOI: 10.1039/c9np00051h] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Covering: up to July 2019 Terpene synthases (TSs) are responsible for generating much of the structural diversity found in the superfamily of terpenoid natural products. These elegant enzymes mediate complex carbocation-based cyclization and rearrangement cascades with a variety of electron-rich linear and cyclic substrates. For decades, two main classes of TSs, divided by how they generate the reaction-triggering initial carbocation, have dominated the field of terpene enzymology. Recently, several novel and unconventional TSs that perform TS-like reactions but do not resemble canonical TSs in sequence or structure have been discovered. In this review, we identify 12 families of non-canonical TSs and examine their sequences, structures, functions, and proposed mechanisms. Nature provides a wide diversity of enzymes, including prenyltransferases, methyltransferases, P450s, and NAD+-dependent dehydrogenases, as well as completely new enzymes, that utilize distinctive reaction mechanisms for TS chemistry. These unique non-canonical TSs provide immense opportunities to understand how nature evolved different tools for terpene biosynthesis by structural and mechanistic characterization while affording new probes for the discovery of novel terpenoid natural products and gene clusters via genome mining. With every new discovery, the dualistic paradigm of TSs is contradicted and the field of terpene chemistry and enzymology continues to expand.
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Affiliation(s)
- Jeffrey D Rudolf
- Department of Chemistry, University of Florida, Gainesville, Florida 32611, USA.
| | - Chin-Yuan Chang
- Department of Biological Science and Technology, National Chiao Tung University, Hsin-Chu, Taiwan, Republic of China
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25
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Neto JSS, Zeni G. Recent advances in the synthesis of indoles from alkynes and nitrogen sources. Org Chem Front 2020. [DOI: 10.1039/c9qo01315f] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This review highlights ten years of success in the synthesis of indoles using alkynes and nitrogen sources as substrates.
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Affiliation(s)
- José Sebastião Santos Neto
- Laboratório de Síntese
- Reatividade
- Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE
- UFSM
- Santa Maria
| | - Gilson Zeni
- Laboratório de Síntese
- Reatividade
- Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE
- UFSM
- Santa Maria
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26
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Leonel G, Back DF, Zeni G. Synthesis of 3‐Substituted Chalcogenophene‐Fused Indoles from 2‐Alkynylindoles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901213] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Guilherme Leonel
- Laboratório de Síntese, Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM Santa Maria, Rio Grande do Sul Brazil 97105-900
| | - Davi F. Back
- Laboratório de Materiais Inorgânicos Departamento de Química, UFSM Santa Maria, Rio Grande do Sul Brazil 97105-900
| | - Gilson Zeni
- Laboratório de Síntese, Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios CCNE, UFSM Santa Maria, Rio Grande do Sul Brazil 97105-900
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27
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Knoot CJ, Khatri Y, Hohlman RM, Sherman DH, Pakrasi HB. Engineered Production of Hapalindole Alkaloids in the Cyanobacterium Synechococcus sp. UTEX 2973. ACS Synth Biol 2019; 8:1941-1951. [PMID: 31284716 PMCID: PMC6724726 DOI: 10.1021/acssynbio.9b00229] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cyanobacteria produce numerous valuable bioactive secondary metabolites (natural products) including alkaloids, isoprenoids, nonribosomal peptides, and polyketides. However, the genomic organization of the biosynthetic gene clusters, complex gene expression patterns, and low compound yields synthesized by the native producers currently limits access to the vast majority of these valuable molecules for detailed studies. Molecular cloning and expression of such clusters in heterotrophic hosts is often precarious owing to genetic and biochemical incompatibilities. Production of such biomolecules in photoautotrophic hosts analogous to the native producers is an attractive alternative that has been under-explored. Here, we describe engineering of the fast-growing cyanobacterium Synechococcus elongatus UTEX 2973 to produce key compounds of the hapalindole family of indole-isonitrile alkaloids. Engineering of the 42-kbp "fam" hapalindole pathway from the cyanobacterium Fischerella ambigua UTEX 1903 into S2973 was accomplished by rationally reconstructing six to seven core biosynthetic genes into synthetic operons. The resulting Synechococcus strains afforded controllable production of indole-isonitrile biosynthetic intermediates and hapalindoles H and 12-epi-hapalindole U at a titer of 0.75-3 mg/L. Exchanging genes encoding fam cyclase enzymes in the synthetic operons was employed to control the stereochemistry of the resulting product. Establishing a robust expression system provides a facile route to scalable levels of similar natural and new forms of bioactive hapalindole derivatives and its structural relatives (e.g., fischerindoles, welwitindolinones). Moreover, this versatile expression system represents a promising tool for exploring other functional characteristics of orphan gene products that mediate the remarkable biosynthesis of this important family of natural products.
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Affiliation(s)
- Cory J Knoot
- Department of Biology , Washington University , St. Louis , Missouri 63130 , United States
| | - Yogan Khatri
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Robert M Hohlman
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - David H Sherman
- Life Sciences Institute , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Himadri B Pakrasi
- Department of Biology , Washington University , St. Louis , Missouri 63130 , United States
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28
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Awakawa T, Abe I. Molecular basis for the plasticity of aromatic prenyltransferases in hapalindole biosynthesis. Beilstein J Org Chem 2019; 15:1545-1551. [PMID: 31354873 PMCID: PMC6632223 DOI: 10.3762/bjoc.15.157] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 07/02/2019] [Indexed: 12/25/2022] Open
Abstract
Aromatic prenyltransferases (PTases) are enzymes that catalyze Friedel–Crafts reactions between aromatic compounds and isoprenoid diphosphates. In hapalindole biosynthesis, the aromatic PTases AmbP1 and AmbP3 exhibit surprisingly plastic selectivities. AmbP1 not only transfers the geranyl group on the C-3 of cis-indolylvinyl isonitrile, but also on the C-2, which is supressed in the presence of Mg2+ ions. AmbP3 transfers the dimethylallyl group on C-2 of hapalindole U in the reverse manner, but on C-2 of its C-10 stereoisomer in the normal manner. This review highlights the molecular bases of the AmbP1 and AmbP3 functions, elucidated through their X-ray crystal structures. The knowledge presented here will contribute to the understanding of aromatic PTase reactions and will enhance their uses as biocatalysts.
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Affiliation(s)
- Takayoshi Awakawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Ikuro Abe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan.,Collaborative Research Institute for Innovative Microbiology, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan
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Zhou J, Wang B, He XH, Liu L, Wu J, Lu J, Peng C, Rao CL, Han B. Asymmetric Construction of 4H-Pyrano[3,2-b]indoles via Cinchonine-Catalyzed 1,4-Addition of 2-Ylideneoxindole with Malononitrile. J Org Chem 2019; 84:5450-5459. [DOI: 10.1021/acs.joc.9b00430] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jin Zhou
- Key laboratory of Characteristic Chinese Resource in Southwest China, School of Pharmacy and School of Public health, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Biao Wang
- Key laboratory of Characteristic Chinese Resource in Southwest China, School of Pharmacy and School of Public health, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Xiang-Hong He
- Key laboratory of Characteristic Chinese Resource in Southwest China, School of Pharmacy and School of Public health, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Li Liu
- Key laboratory of Characteristic Chinese Resource in Southwest China, School of Pharmacy and School of Public health, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Jun Wu
- Key laboratory of Characteristic Chinese Resource in Southwest China, School of Pharmacy and School of Public health, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Jing Lu
- Key laboratory of Characteristic Chinese Resource in Southwest China, School of Pharmacy and School of Public health, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Cheng Peng
- Key laboratory of Characteristic Chinese Resource in Southwest China, School of Pharmacy and School of Public health, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Chao-Long Rao
- Key laboratory of Characteristic Chinese Resource in Southwest China, School of Pharmacy and School of Public health, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
| | - Bo Han
- Key laboratory of Characteristic Chinese Resource in Southwest China, School of Pharmacy and School of Public health, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P. R. China
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30
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Albano G, Morelli M, Lissia M, Aronica LA. Synthesis of Functionalised Indoline and Isoquinoline Derivatives through a Silylcarbocyclisation/Desilylation Sequence. ChemistrySelect 2019. [DOI: 10.1002/slct.201900524] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Gianluigi Albano
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| | - Martina Morelli
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| | - Margherita Lissia
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
| | - Laura A. Aronica
- Dipartimento di Chimica e Chimica Industriale; University of Pisa, Via G. Moruzzi 13; 56124 Pisa Italy Fax: (+)390502219260
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31
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Prochnow T, Maroneze A, Back DF, Zeni G. Synthesis of 3-(Organochalcogen) Chalcogenazolo Indoles via Cascade Cyclization of N-Alkynylindoles. J Org Chem 2019; 84:2891-2900. [PMID: 30702892 DOI: 10.1021/acs.joc.9b00052] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A transition metal-free one-pot, three-steps protocol combining N-alkynylindoles, n-butyllithium, elemental selenium, and an electrophile source was developed to allow the synthesis of 3-(organoselanyl) selenazolo indoles. Substrate scope was studied by varying the structure of N-alkynylindoles and the electrophile source. This sequential reaction proceeded selectively through an initial intramolecular 5- endo-dig mode with two new carbon-selenium bonds formation in a one-pot procedure. The reaction conditions were also compatible with elemental sulfur and tellurium, which led to construct 3-(alkylthio) thiazolo indoles and 3-(alkyltelluro) tellurazolo indoles, respectively. In addition, it was also demonstrated that a series of dichalcogenides derived from chalcogenazoloindoles ring could be easily prepared via oxidation of chalcogenolate anion in contact with air.
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32
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Chen C, Hu X, Tang X, Yang Y, Ko T, Gao J, Zheng Y, Huang J, Yu Z, Li L, Han S, Cai N, Zhang Y, Liu W, Guo R. The Crystal Structure of a Class of Cyclases that Catalyze the Cope Rearrangement. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chun‐Chi Chen
- State Key Laboratory of Biocatalysis and Enzyme EngineeringHubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei ProvinceHubei Key Laboratory of Industrial BiotechnologyCollege of Life SciencesHubei University Wuhan 430062 China
| | - Xiangying Hu
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
| | - Xueke Tang
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
- School of Life SciencesUniversity of Science and Technology of China Anhui 230026 China
| | - Yunyun Yang
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Tzu‐Ping Ko
- Institute of Biological ChemistryAcademia Sinica Taipei 11529 Taiwan
| | - Jian Gao
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
| | - Yingying Zheng
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
| | - Jian‐Wen Huang
- State Key Laboratory of Biocatalysis and Enzyme EngineeringHubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei ProvinceHubei Key Laboratory of Industrial BiotechnologyCollege of Life SciencesHubei University Wuhan 430062 China
| | - Zhengsen Yu
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Liping Li
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Shuai Han
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Ningning Cai
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Yonghui Zhang
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Weidong Liu
- State Key Laboratory of Biocatalysis and Enzyme EngineeringHubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei ProvinceHubei Key Laboratory of Industrial BiotechnologyCollege of Life SciencesHubei University Wuhan 430062 China
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
| | - Rey‐Ting Guo
- State Key Laboratory of Biocatalysis and Enzyme EngineeringHubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei ProvinceHubei Key Laboratory of Industrial BiotechnologyCollege of Life SciencesHubei University Wuhan 430062 China
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
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33
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Chen C, Hu X, Tang X, Yang Y, Ko T, Gao J, Zheng Y, Huang J, Yu Z, Li L, Han S, Cai N, Zhang Y, Liu W, Guo R. The Crystal Structure of a Class of Cyclases that Catalyze the Cope Rearrangement. Angew Chem Int Ed Engl 2018; 57:15060-15064. [DOI: 10.1002/anie.201808231] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 08/24/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Chun‐Chi Chen
- State Key Laboratory of Biocatalysis and Enzyme EngineeringHubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei ProvinceHubei Key Laboratory of Industrial BiotechnologyCollege of Life SciencesHubei University Wuhan 430062 China
| | - Xiangying Hu
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
| | - Xueke Tang
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
- School of Life SciencesUniversity of Science and Technology of China Anhui 230026 China
| | - Yunyun Yang
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Tzu‐Ping Ko
- Institute of Biological ChemistryAcademia Sinica Taipei 11529 Taiwan
| | - Jian Gao
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
| | - Yingying Zheng
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
| | - Jian‐Wen Huang
- State Key Laboratory of Biocatalysis and Enzyme EngineeringHubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei ProvinceHubei Key Laboratory of Industrial BiotechnologyCollege of Life SciencesHubei University Wuhan 430062 China
| | - Zhengsen Yu
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Liping Li
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Shuai Han
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Ningning Cai
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Yonghui Zhang
- School of Pharmaceutical Sciences; MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical BiologyTsinghua University Beijing 100084 China
| | - Weidong Liu
- State Key Laboratory of Biocatalysis and Enzyme EngineeringHubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei ProvinceHubei Key Laboratory of Industrial BiotechnologyCollege of Life SciencesHubei University Wuhan 430062 China
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
| | - Rey‐Ting Guo
- State Key Laboratory of Biocatalysis and Enzyme EngineeringHubei Collaborative Innovation Center for Green Transformation of Bio-resources, Environmental Microbial Technology Center of Hubei ProvinceHubei Key Laboratory of Industrial BiotechnologyCollege of Life SciencesHubei University Wuhan 430062 China
- Industrial Enzymes National Engineering LaboratoryTianjin Institute of Industrial BiotechnologyChinese Academy of Sciences Tianjin 300308 China
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34
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Sahu S, Das B, Maji MS. Stereodivergent Total Synthesis of Hapalindoles, Fischerindoles, Hapalonamide H, and Ambiguine H Alkaloids by Developing a Biomimetic, Redox-Neutral, Cascade Prins-Type Cyclization. Org Lett 2018; 20:6485-6489. [DOI: 10.1021/acs.orglett.8b02804] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Samrat Sahu
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Beauty Das
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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35
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Ogawara H. Comparison of Strategies to Overcome Drug Resistance: Learning from Various Kingdoms. Molecules 2018; 23:E1476. [PMID: 29912169 PMCID: PMC6100412 DOI: 10.3390/molecules23061476] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/13/2018] [Accepted: 06/15/2018] [Indexed: 11/16/2022] Open
Abstract
Drug resistance, especially antibiotic resistance, is a growing threat to human health. To overcome this problem, it is significant to know precisely the mechanisms of drug resistance and/or self-resistance in various kingdoms, from bacteria through plants to animals, once more. This review compares the molecular mechanisms of the resistance against phycotoxins, toxins from marine and terrestrial animals, plants and fungi, and antibiotics. The results reveal that each kingdom possesses the characteristic features. The main mechanisms in each kingdom are transporters/efflux pumps in phycotoxins, mutation and modification of targets and sequestration in marine and terrestrial animal toxins, ABC transporters and sequestration in plant toxins, transporters in fungal toxins, and various or mixed mechanisms in antibiotics. Antibiotic producers in particular make tremendous efforts for avoiding suicide, and are more flexible and adaptable to the changes of environments. With these features in mind, potential alternative strategies to overcome these resistance problems are discussed. This paper will provide clues for solving the issues of drug resistance.
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Affiliation(s)
- Hiroshi Ogawara
- HO Bio Institute, Yushima-2, Bunkyo-ku, Tokyo 113-0034, Japan.
- Department of Biochemistry, Meiji Pharmaceutical University, Noshio-2, Kiyose, Tokyo 204-8588, Japan.
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36
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Polák P, Tobrman T. The synthesis of polysubstituted indoles from 3-bromo-2-indolyl phosphates. Org Biomol Chem 2018; 15:6233-6241. [PMID: 28702629 DOI: 10.1039/c7ob01127j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel methodology for the synthesis of functionalised indoles based on the cross-coupling reactions of 3-bromo-2-indolyl phosphates is described. The preparation involves the conversion of easily available 2-oxindoles to 3,3-dibromo-2-oxindoles followed by the Perkow reaction affording 3-bromo-2-indolyl phosphates. Then bromine atom is substituted regioselectively by the Suzuki coupling reaction. We observed that aluminum chloride promoted the reaction of 3-substituted-2-indolyl phosphates with organozinc reagents furnishing 2,3-disubstituted indoles as final products. The overall diversity and efficiency of the methodology was demonstrated by the synthesis of bioactive molecule from easily available substances.
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Affiliation(s)
- Peter Polák
- Department of Organic Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic.
| | - Tomáš Tobrman
- Department of Organic Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic.
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37
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Rubin HN, Van Hecke K, Mills JJ, Cockrell J, Morgan JB. Enantiospecific Synthesis of β-Substituted Tryptamines. Org Lett 2017; 19:4976-4979. [DOI: 10.1021/acs.orglett.7b02474] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Heather N. Rubin
- Department of Chemistry and
Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North
Carolina 28403, United States
| | - Kinney Van Hecke
- Department of Chemistry and
Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North
Carolina 28403, United States
| | - Jonathan J. Mills
- Department of Chemistry and
Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North
Carolina 28403, United States
| | - Jennifer Cockrell
- Department of Chemistry and
Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North
Carolina 28403, United States
| | - Jeremy B. Morgan
- Department of Chemistry and
Biochemistry, University of North Carolina Wilmington, Dobo Hall, Wilmington, North
Carolina 28403, United States
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38
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Ye LM, Chen J, Mao P, Zhang XJ, Yan M. Visible-light promoted synthesis of 3-arylthioindoles from indoles and diaryl disulfides. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.090] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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39
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Moosmann P, Ueoka R, Grauso L, Mangoni A, Morinaka BI, Gugger M, Piel J. Cyanobacterial ent
-Sterol-Like Natural Products from a Deviated Ubiquinone Pathway. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611617] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Philipp Moosmann
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Reiko Ueoka
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Laura Grauso
- Dipartimento di Farmacia Università di Napoli Federico II; Università di Napoli Federico II; via D. Montesano 49 80131 Napoli Italy
- Current address: Stazione Zoologica Anton Dohrn; Villa Comunale 80121 Napoli Italy
| | - Alfonso Mangoni
- Dipartimento di Farmacia Università di Napoli Federico II; Università di Napoli Federico II; via D. Montesano 49 80131 Napoli Italy
| | - Brandon I. Morinaka
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Muriel Gugger
- Institut Pasteur; Collection des Cyanobactéries; Département de Microbiologie; 75015 Paris France
| | - Jörn Piel
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
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40
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Moosmann P, Ueoka R, Grauso L, Mangoni A, Morinaka BI, Gugger M, Piel J. Cyanobacterial ent
-Sterol-Like Natural Products from a Deviated Ubiquinone Pathway. Angew Chem Int Ed Engl 2017; 56:4987-4990. [DOI: 10.1002/anie.201611617] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/19/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Philipp Moosmann
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Reiko Ueoka
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Laura Grauso
- Dipartimento di Farmacia Università di Napoli Federico II; Università di Napoli Federico II; via D. Montesano 49 80131 Napoli Italy
- Current address: Stazione Zoologica Anton Dohrn; Villa Comunale 80121 Napoli Italy
| | - Alfonso Mangoni
- Dipartimento di Farmacia Università di Napoli Federico II; Università di Napoli Federico II; via D. Montesano 49 80131 Napoli Italy
| | - Brandon I. Morinaka
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Muriel Gugger
- Institut Pasteur; Collection des Cyanobactéries; Département de Microbiologie; 75015 Paris France
| | - Jörn Piel
- Institut für Mikrobiologie; Eidgenössiche Technische Hochschule (ETH) Zürich; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
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41
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Wang KK, Du W, Zhu J, Chen YC. Construction of polycyclic spirooxindoles through [3+2] annulations of Morita–Baylis–Hillman carbonates and 3-nitro-7-azaindoles. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2016.11.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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