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Simons VE, Mándi A, Frank M, van Geelen L, Tran-Cong N, Albrecht D, Coort A, Gebhard C, Kurtán T, Kalscheuer R. Colletodiol derivatives of the endophytic fungus Trichocladium sp. Fitoterapia 2024; 175:105914. [PMID: 38508500 DOI: 10.1016/j.fitote.2024.105914] [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: 08/15/2023] [Revised: 02/21/2024] [Accepted: 03/16/2024] [Indexed: 03/22/2024]
Abstract
The OSMAC (one strain many compounds) concept is a cultivation-based approach to increase the diversity of secondary metabolites in microorganisms. In this study, we applied the OSMAC-approach to the endophytic fungus Trichocladium sp. by supplementation of the cultivation medium with 2.5% phenylalanine. This experiment yielded five new compounds, trichocladiol (1), trichocladic acid (2), colletodiolic acid (3), colletolactone (4) and colletolic acid (5), together with five previously described ones (6-10). The structures were elucidated via comprehensive spectroscopic measurements, and the absolute configurations of compound 1 was elucidated by using TDDFT-ECD calculations. For formation of compounds 3-5, a pathway based on colletodiol biosynthesis is proposed. Compound 6 exhibited strong antibacterial activity against methicillin-resistant Staphylococcus aureus with a minimal inhibitory concentration (MIC) of 0.78 μM as well as a strong cytotoxic effect against the human monocytic cell line THP1 with an IC50 of 0.7 μM. Compound 8 showed moderate antibacterial activity against Mycobacterium tuberculosis with a MIC of 25 μM and a weak cytotoxic effect against THP1 cells with an IC50 of 42 μM.
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Affiliation(s)
- Viktor E Simons
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical Biology and Biotechnology, Universitätsstrasse 1, Düsseldorf 40225, Germany
| | - Attila Mándi
- Department of Organic Chemistry, University of Debrecen, P.O. Box 400, Debrecen 4002, Hungary
| | - Marian Frank
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical Biology and Biotechnology, Universitätsstrasse 1, Düsseldorf 40225, Germany
| | - Lasse van Geelen
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical Biology and Biotechnology, Universitätsstrasse 1, Düsseldorf 40225, Germany
| | - Nam Tran-Cong
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical Biology and Biotechnology, Universitätsstrasse 1, Düsseldorf 40225, Germany
| | - Dorothea Albrecht
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical Biology and Biotechnology, Universitätsstrasse 1, Düsseldorf 40225, Germany
| | - Annika Coort
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical Biology and Biotechnology, Universitätsstrasse 1, Düsseldorf 40225, Germany
| | - Christina Gebhard
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical Biology and Biotechnology, Universitätsstrasse 1, Düsseldorf 40225, Germany
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen, P.O. Box 400, Debrecen 4002, Hungary
| | - Rainer Kalscheuer
- Heinrich Heine University Düsseldorf, Faculty of Mathematics and Natural Sciences, Institute of Pharmaceutical Biology and Biotechnology, Universitätsstrasse 1, Düsseldorf 40225, Germany.
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Daroodi Z, Taheri P, Tarighi S, Iranshahi M, Akaberi M. Efficacy of ergosterol peroxide obtained from the endophytic fungus Acrophialophora jodhpurensis against Rhizoctonia solani. J Appl Microbiol 2024; 135:lxae031. [PMID: 38346851 DOI: 10.1093/jambio/lxae031] [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: 11/07/2023] [Revised: 01/08/2024] [Accepted: 02/10/2024] [Indexed: 02/27/2024]
Abstract
AIM To investigate antifungal activity of the extract and major metabolite of the endophytic fungus Acrophialophora jodhpurensis (belonging to Chaetomiaceae) against crown and root rot caused by Rhizoctonia solani (teleomorph: Thanatephorus cucumeris), as an important pathogen of tomato. METHODS AND RESULTS The endophytic fungus A. jodhpurensis, has high inhibitory effect against R. solani AG4-HG II in vitro and in vivo. The media conditions were optimized for production of the endophyte's metabolites. The highest amounts of secondary metabolites were produced at pH 7, 30°C temperature, and in the presence of 0.5% glucose, 0.033% sodium nitrate, and 1 gl-1 asparagine as the best carbon, nitrogen, and amino acid sources, respectively. The mycelia were extracted by methanol and the obtained extract was submitted to various chromatography techniques. Phytochemical analysis via thin-layer chromatography (TLC) and nuclear magnetic resonance (NMR) spectroscopy showed that ergosterol peroxide was the major component in the extract of this endophyte. Antifungal activities of the methanolic extract and ergosterol peroxide in the culture media were studied against R. solani. Minimum inhibitory concentrations of the extract and ergosterol peroxide against the pathogen were 600 and 150 µg ml-1, respectively. Ergosterol peroxide revealed destructive effects on the pathogen structures in microscopic analyses and induced sclerotia production. Histochemical analyses revealed that it induced apoptosis in the mycelia of R. solani via superoxide production and cell death. Application of ergosterol peroxide in the leaf disc assay reduced the disease severity in tomato leaves. CONCLUSIONS Antifungal metabolites produced by A. jodhpurensis, such as ergosterol peroxide, are capable of controlling destructive Rhizoctonia diseases on tomato.
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Affiliation(s)
- Zoha Daroodi
- Department of Plant Protection, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad 9177948944, Iran
| | - Parissa Taheri
- Department of Plant Protection, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad 9177948944, Iran
| | - Saeed Tarighi
- Department of Plant Protection, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad 9177948944, Iran
| | - Mehrdad Iranshahi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177948944, Iran
| | - Maryam Akaberi
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad 9177948944, Iran
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3
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Xie F, Xia DD, Duan HJ, Sun Y, Zi ZF, Wan DY, Zhou H, Ding ZT. Two Decarestrictine Analogs from the Soil-Derived Fungus Penicillium sp. YUD18003 Associated with Gastrodia elata. Chem Biodivers 2023; 20:e202300566. [PMID: 37365441 DOI: 10.1002/cbdv.202300566] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/24/2023] [Accepted: 06/26/2023] [Indexed: 06/28/2023]
Abstract
Two new decarestrictine analogs decarestrictine P and penicitone, together with eight known homologous compounds were isolated from the soil fungus from the rhizosphere of Penicillium sp. YUD18003 related to Gastrodia elata. Their different structures include a decanolides decartestridine P and a long-chain polyhydroxyketone penicitone. The structures of new compounds were determined by nuclear magnetic resonance (NMR) spectroscopic analysis and high resolution electrospray ionization mass spectrometry (HR-ESI-MS), while their absolute configurations were determined by spectroscopic methods, DP4+ probability analysis, modified Snatzke's method and electron circular dichroism (ECD) calculations. All compounds were evaluated for antimicrobial activities.
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Affiliation(s)
- Fei Xie
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
- Institute of International Rivers and Eco-security, Yunnan University, Kunming, 650500, China
| | - Dan-Dan Xia
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Hao-Jie Duan
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Yue Sun
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Zhi-Feng Zi
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Dai-Yu Wan
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Hao Zhou
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
| | - Zhong-Tao Ding
- Key Laboratory of Functional Molecules Analysis and Biotransformation of Universities in Yunnan Province, Yunnan Characteristic Plant Extraction Laboratory, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, China
- College of Traditional Chinese Medicine, Yunnan University of Chinese Medicine, Kunming, 650500, China
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Chemical Investigation of Metabolites Produced by a Deep-Sea-Derived Fungus Penicillium sp. Chem Nat Compd 2023. [DOI: 10.1007/s10600-023-03952-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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5
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Key insights into secondary metabolites from various Chaetomium species. Appl Microbiol Biotechnol 2023; 107:1077-1093. [PMID: 36648526 PMCID: PMC9843691 DOI: 10.1007/s00253-023-12365-y] [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: 10/02/2022] [Revised: 12/26/2022] [Accepted: 12/31/2022] [Indexed: 01/18/2023]
Abstract
Endophytic fungi have proved to be a major source of secondary metabolites, wherein the genus Chaetomium has emerged as a source of multifarious bioactive natural compounds belonging to diverse classes such as chaetoglobosins, epipolythiodioxopiperazines, azaphilones, xanthones, anthraquinone, chromones, depsidones, terpenoids, and steroids. The objective of this review is to encapsulate recent findings on various Chaetomium strains, such as C. globosum, C. cupreum, C. elatum, C. subspirale, C. olivaceum, C. indicum, and C. nigricolor known for production of beneficial secondary metabolites, with an insight into their origin and function. A thorough literature survey was conducted for obtaining Chaetomium-derived secondary metabolites, with a scope of future application into drug development efforts. More than 100 secondary metabolites, with various beneficial properties such as antitumor, cytotoxic, antimalarial, and enzyme inhibitory activities, were enlisted. We believe this review will enhance the understanding of beneficial effects conferred by various Chaetomium-derived secondary metabolites and emphasize their potential in serving novel drug development efforts. KEY POINTS: • Identified Chaetomium-derived metabolites with potential for drug development. • More than 100 beneficial metabolites are enlisted. • Benefits include anti-cancerous, antimalarial, and anti-enzymatic properties.
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6
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Cochereau B, Meslet-Cladière L, Pouchus YF, Grovel O, Roullier C. Halogenation in Fungi: What Do We Know and What Remains to Be Discovered? Molecules 2022; 27:molecules27103157. [PMID: 35630634 PMCID: PMC9144378 DOI: 10.3390/molecules27103157] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 02/04/2023] Open
Abstract
In nature, living organisms produce a wide variety of specialized metabolites to perform many biological functions. Among these specialized metabolites, some carry halogen atoms on their structure, which can modify their chemical characteristics. Research into this type of molecule has focused on how organisms incorporate these atoms into specialized metabolites. Several families of enzymes have been described gathering metalloenzymes, flavoproteins, or S-adenosyl-L-methionine (SAM) enzymes that can incorporate these atoms into different types of chemical structures. However, even though the first halogenation enzyme was discovered in a fungus, this clade is still lagging behind other clades such as bacteria, where many enzymes have been discovered. This review will therefore focus on all halogenation enzymes that have been described in fungi and their associated metabolites by searching for proteins available in databases, but also by using all the available fungal genomes. In the second part of the review, the chemical diversity of halogenated molecules found in fungi will be discussed. This will allow the highlighting of halogenation mechanisms that are still unknown today, therefore, highlighting potentially new unknown halogenation enzymes.
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Affiliation(s)
- Bastien Cochereau
- Institut des Substances et Organismes de la Mer, ISOMer, UR 2160, Nantes Université, F-44000 Nantes, France; (B.C.); (Y.F.P.); (O.G.)
- Laboratoire Universitaire de Biodiversité et Écologie Microbienne, INRAE, University Brest, F-29280 Plouzané, France;
| | - Laurence Meslet-Cladière
- Laboratoire Universitaire de Biodiversité et Écologie Microbienne, INRAE, University Brest, F-29280 Plouzané, France;
| | - Yves François Pouchus
- Institut des Substances et Organismes de la Mer, ISOMer, UR 2160, Nantes Université, F-44000 Nantes, France; (B.C.); (Y.F.P.); (O.G.)
| | - Olivier Grovel
- Institut des Substances et Organismes de la Mer, ISOMer, UR 2160, Nantes Université, F-44000 Nantes, France; (B.C.); (Y.F.P.); (O.G.)
| | - Catherine Roullier
- Institut des Substances et Organismes de la Mer, ISOMer, UR 2160, Nantes Université, F-44000 Nantes, France; (B.C.); (Y.F.P.); (O.G.)
- Correspondence: ; Tel.: +33-251-125-686
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7
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Chaetomium and Chaetomium-like Species from European Indoor Environments Include Dichotomopilus finlandicus sp. nov. Pathogens 2021; 10:pathogens10091133. [PMID: 34578165 PMCID: PMC8466430 DOI: 10.3390/pathogens10091133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/25/2021] [Accepted: 09/01/2021] [Indexed: 11/17/2022] Open
Abstract
The genus Chaetomium is a frequently occurring fungal taxon world-wide. Chaetomium and Chaetomium-like species occur in indoor environments, where they can degrade cellulose-based building materials, thereby causing structural damage. Furthermore, several species of this genus may also cause adverse effects on human health. The aims of this research were to identify Chaetomium and Chaetomium-like strains isolated from indoor environments in Hungary and Finland, two geographically distant regions of Europe with drier and wetter continental climates, respectively, and to study their morphological and physiological properties, as well as their extracellular enzyme activities, thereby comparing the Chaetomium and Chaetomium-like species isolated from these two different regions of Europe and their properties. Chaetomium and Chaetomium-like strains were isolated from flats and offices in Hungary, as well as from schools, flats, and offices in Finland. Fragments of the translation elongation factor 1α (tef1α), the second largest subunit of RNA polymerase II (rpb2) and β-tubulin (tub2) genes, as well as the internal transcribed spacer (ITS) region of the ribosomal RNA gene cluster were sequenced, and phylogenetic analysis of the sequences performed. Morphological examinations were performed by stereomicroscopy and scanning electron microscopy. Thirty-one Chaetomium sp. strains (15 from Hungary and 16 from Finland) were examined during the study. The most abundant species was Ch. globosum in both countries. In Hungary, 13 strains were identified as Ch. globosum, 1 as Ch. cochliodes, and 1 as Ch. interruptum. In Finland, 10 strains were Ch. globosum, 2 strains were Ch. cochliodes, 2 were Ch. rectangulare, and 2 isolates (SZMC 26527, SZMC 26529) proved to be representatives of a yet undescribed phylogenetic species from the closely related genus Dichotomopilus, which we formally describe here as the new species Dichotomopilus finlandicus. Growth of the isolates was examined at different temperatures (4, 15, 20, 25, 30, 37, 35, 40, and 45 °C), while their extracellular enzyme production was determined spectrophotometrically.
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8
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Biologically active secondary metabolites and biotechnological applications of species of the family Chaetomiaceae (Sordariales): an updated review from 2016 to 2021. Mycol Prog 2021. [DOI: 10.1007/s11557-021-01704-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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9
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Guo Q, Chen J, Ren Y, Yin Z, Zhang J, Yang B, Wang X, Yin W, Zhang W, Ding G, Chen L. Hydrazine-Containing Heterocycle Cytochalasan Derivatives From Hydrazinolysis of Extracts of a Desert Soil-Derived Fungus Chaetomium madrasense 375. Front Chem 2021; 9:620589. [PMID: 33968893 PMCID: PMC8097171 DOI: 10.3389/fchem.2021.620589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 03/01/2021] [Indexed: 11/13/2022] Open
Abstract
"Diversity-enhanced extracts" is an effective method of producing chemical libraries for the purpose of drug discovery. Three rare new cytochalasan derivative chaetoglobosins B1-B3 (1-3) were obtained from chemically engineered crude broth extracts of Chaetomium madrasense 375 prepared by reacting with hydrazine monohydrate and four known metabolite chaetoglobosins (4-7) were also identified from the fungus. The structures were identified by NMR and MS analysis and electronic circular dichroism simulation. In addition, the antiproliferative activities of these compounds were also evaluated, and the drug-resistant activities of cytochalasans were evaluated for the first time. Compound 6 possessed potent activity against four human cancer cells (A549, HCC827, SW620, and MDA-MB-231), and two drug-resistant HCC827 cells (Gefitinib-resistant, Osimertinib-resistant) compared with the positive controls.
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Affiliation(s)
- Qingfeng Guo
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Jinhua Chen
- Department of Pharmacy, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Yuwei Ren
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Zhenhua Yin
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Juanjuan Zhang
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Baocheng Yang
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
| | - Xuewei Wang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Wenbing Yin
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Wancun Zhang
- Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Gang Ding
- Institute of Medicinal Plant Development, Chinese Academy of Medical Science and Union Medical College, Beijing, China
| | - Lin Chen
- Zhengzhou Key Laboratory of Synthetic Biology of Natural Products, Zhengzhou Key Laboratory of Medicinal Resources Research, Comprehensive Utilization of Edible and Medicinal Plant Resources Engineering Technology Research Center, Huanghe Science and Technology College, Zhengzhou, China
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10
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Ran H, Li SM. Fungal benzene carbaldehydes: occurrence, structural diversity, activities and biosynthesis. Nat Prod Rep 2020; 38:240-263. [PMID: 32779678 DOI: 10.1039/d0np00026d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Covering: up to April 2020Fungal benzene carbaldehydes with salicylaldehydes as predominant representatives carry usually hydroxyl groups, prenyl moieties and alkyl side chains. They are found in both basidiomycetes and ascomycetes as key intermediates or end products of various biosynthetic pathways and exhibit diverse biological and pharmacological activities. The skeletons of the benzene carbaldehydes are usually derived from polyketide pathways catalysed by iterative fungal polyketide synthases. The aldehyde groups are formed by direct PKS releasing, reduction of benzoic acids or oxidation of benzyl alcohols.
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Affiliation(s)
- Huomiao Ran
- Institut für Pharmazeutische Biologie und Biotechnologie, Fachbereich Pharmazie, Philipps-Universität Marburg, Robert-Koch-Straße 4, 35037 Marburg, Germany.
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11
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Qi J, Wang D, Yin X, Zhang Q, Gao JM. New Metabolite With Inhibitory Activity Against α-Glucosidase and α-Amylase From Endophytic Chaetomium globosum. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20941338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
An efficient bioactive tracking separation strategy based on liquid-liquid extraction and high-speed counter-current chromatography (HSCCC) was developed and used to isolate bioactive natural products from the endophytic fungus Chaetomium globosum residing in Ginkgo biloba. Using HSCCC, the novel metabolite chaetoglobol acid (1) as well as 11 known compounds (2-12), including 6 chlorinated azaphilones and 3 cytochalasans, were successfully isolated. The structure of compound 1 was elucidated through spectroscopic analyses and HRESIMS data. Compound 1 possesses a rare C11-polyketide skeleton. All isolates were evaluated for their α-glucosidase and α-amylase inhibitory activities in vitro. Compound 1 showed high inhibition against α-glucosidase (IC50 = 3.04 μM), 18-fold higher than that of acarbose (IC50 = 54.74 μM), and also displayed moderate inhibitory activity against α-amylase (IC50 = 22.18 μM). As the results indicated that 1 has inhibitory effects against both α-glucosidase and α-amylase, 1 may be a promising candidate for mediating type 2 diabetes.
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Affiliation(s)
- Jianzhao Qi
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Dacheng Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Xia Yin
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Qiang Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling, 712100, China
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Deng M, Liu Y, Huang Y, Yin X, Zhou Y, Duan Y, Xie S, Guo Y, Qiao Y, Shi Z, Tao L, Cao Y, Qi C, Zhang Y. New bioactive secondary metabolites from the Anoectochilus roxburghii endophytic fungus Aspergillus versicolor. Fitoterapia 2020; 143:104532. [DOI: 10.1016/j.fitote.2020.104532] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/26/2020] [Accepted: 03/01/2020] [Indexed: 12/17/2022]
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13
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Hamed SR, Abdel-Azeem AM, Dar PM. Recent Advancements on the Role of Biologically Active Secondary Metabolites from Chaetomium. Fungal Biol 2020. [DOI: 10.1007/978-3-030-31612-9_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
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14
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Yang S, Zhao W, Chen H, Zhang L, Liu T, Chen H, Yang J, Yang X. Aureonitols A and B, Two New C
13
‐Polyketides from
Chaetomium globosum
, an Endophytic Fungus in
Salvia miltiorrhiza. Chem Biodivers 2019; 16:e1900364. [DOI: 10.1002/cbdv.201900364] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 08/05/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Sheng‐Xiang Yang
- Zhejiang Provincial Collaborative Innovation Center for Bamboo Resources and High-efficiency Utilization and Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry BiomassZhejiang A & F University Lin'an 311300 P. R. China
| | - Wen‐Ting Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical SciencesChongqing University Chongqing 401331 P. R. China
| | - Heng‐Ye Chen
- School of Pharmaceutical SciencesSouth-Central University for Nationalities Wuhan 430074 P. R. China
| | - Lei Zhang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical EngineeringZhejiang University of Technology Hangzhou 310014 P. R. China
| | - Ting‐Kai Liu
- School of Pharmaceutical SciencesSouth-Central University for Nationalities Wuhan 430074 P. R. China
| | - He‐Ping Chen
- School of Pharmaceutical SciencesSouth-Central University for Nationalities Wuhan 430074 P. R. China
| | - Jian Yang
- National Resource Center for Chinese Materia MedicaChina Academy of Chinese Medical Sciences Beijing 100700 P. R. China
| | - Xiao‐Long Yang
- School of Pharmaceutical SciencesSouth-Central University for Nationalities Wuhan 430074 P. R. China
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Yan W, Zhao SS, Ye YH, Zhang YY, Zhang Y, Xu JY, Yin SM, Tan RX. Generation of Indoles with Agrochemical Significance through Biotransformation by Chaetomium globosum. JOURNAL OF NATURAL PRODUCTS 2019; 82:2132-2137. [PMID: 31329433 DOI: 10.1021/acs.jnatprod.8b01101] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Six new (1-6) and two known (7 and 8) indole alkaloids were produced by the marine fish-derived fungus Chaetomium globosum 1C51 through biotransformation. The structures of these alkaloids were elucidated by a combination of MS, NMR, and X-ray crystallography analyses. Chaetoindolone A (1) was shown to inhibit the growth of the rice-pathogenic bacteria Xanthomonas oryzae pv. oryzae (xoo) both in vitro and in vivo. Chaetogline A (7) was found to be fungicidal against Sclerotinia sclerotiorum, a pathogen causing rape sclerotinia rot. Collectively, this work provides access to new indole alkaloids with potential agrochemical significance.
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Affiliation(s)
- Wei Yan
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , People's Republic of China
| | - Shuang Shuang Zhao
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , People's Republic of China
| | - Yong Hao Ye
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , People's Republic of China
| | - Yang Yang Zhang
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , People's Republic of China
| | - Yue Zhang
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , People's Republic of China
| | - Jia Yun Xu
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , People's Republic of China
| | - Sheng Mei Yin
- College of Plant Protection, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing Agricultural University , Nanjing 210095 , People's Republic of China
| | - Ren Xiang Tan
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy , Nanjing University of Chinese Medicine , Nanjing 210023 , People's Republic of China
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Yang Z, Dan WJ, Li YX, Peng GR, Zhang AL, Gao JM. Antifungal Metabolites From Alternaria atrans: An Endophytic Fungus in Psidium guajava. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19844116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Six metabolites (1–6), including 1 new fusaric acid derivative, designated atransfusarin (1), and 5 known compounds, (3 R,6 R)-3-benzyl-6-isopropyl-4-methylmorpholine-2,5-dione (2), daucoterol (3), adenosine (4), cerebroside B (5), and 2,3-dihydroxypropyl ( Z,Z)-9,12-octadecadienate (6), were isolated from the solid culture of an endophytic Alternaria atrans MP-7, associated with the medicinal plant Psidium guajava. The structure of the new compound was elucidated by spectral data. The antifungal test indicated that (3 R,6 R)-3-benzyl-6-isopropyl-4-methylmorpholine-2,5-dione (2) showed obvious inhibitory activity against Alternaria solani, Colletotrichum gloeosporioides, and Phyricularia grisea. Compared to fusaric acid (1a), even though the antifungal activity of atransfusarin (1) against A. solani, C. gloeosporioides, and P. grisea was greatly decreased, its inhibitory effect against Botrytis cinerea was still retained.
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Affiliation(s)
- Zhi Yang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, People’s Republic of China
| | - Wen-Jia Dan
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, People’s Republic of China
| | - Yi-Xiao Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, People’s Republic of China
| | - Guang-Rui Peng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, People’s Republic of China
| | - An-Ling Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, People’s Republic of China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, People’s Republic of China
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New Metabolites from Endophytic Fungus Chaetomium globosum CDW7. Molecules 2018; 23:molecules23112873. [PMID: 30400338 PMCID: PMC6278401 DOI: 10.3390/molecules23112873] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 10/26/2018] [Accepted: 11/01/2018] [Indexed: 12/15/2022] Open
Abstract
Five metabolites including two new ones, prochaetoviridin A (1) and chaetoindolin A (2), were isolated from the endophytic fungus Chaetomium globosum CDW7. Compounds 1 and 2 were characterized as an isocoumarin and an indole alkaloid derivative, respectively, with their structures elucidated by comprehensive spectroscopic analyses including high-resolution electrospray ionization mass spectrometry (HR-ESI-MS), NMR, and circular dichroism (CD) comparison. Compounds 3–5 were identified as chaetoviridin A, chaetoglobosin R, and chaetoglobosin T, respectively. Chaetoviridin A (3) exhibited antifungal activity against Sclerotinia sclerotiorum with an EC50 value of 1.97 μg/mL. In vivo test showed that 3 displayed a protective efficacy of 64.3% against rape Sclerotinia rot at the dosage of 200 μg/mL, comparable to that of carbendazim (69.2%).
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Han WB, Li H, Zhou HY, Meng J, Gao JM, Tian JM, Zhang AL. Chaetolactone, A Skeletally New Cyclopentenone from Chaetomium sp. C521. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Chaetolactone, a new polyketide with an unprecedented carbon skeleton, was constructed by Chaetomium sp. C521. Its structure was characterized by a combination of detailed spectroscopic analysis and ECD method, which facilitated the establishment of the absolute configuration for chaetolactone. The new compound was tested for anti-phytopathogenic activity against Botrytis cinerea, Alternaria solani, Gibberella saubinettii, and Magnaporthe oryzae, but exhibited negligible inhibition at a concentration of 20 μM.
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Affiliation(s)
- Wen-Bo Han
- Shaanxi Key laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, People's Republic of China
| | - He Li
- Shaanxi Key laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, People's Republic of China
| | - Hui-Yi Zhou
- Shaanxi Key laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, People's Republic of China
| | - Jia Meng
- Shaanxi Key laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, People's Republic of China
| | - Jin-Ming Gao
- Shaanxi Key laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, People's Republic of China
| | - Jun-Mian Tian
- Shaanxi Key laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, People's Republic of China
| | - An-Ling Zhang
- Shaanxi Key laboratory of Natural Products & Chemical Biology, College of Chemistry and Pharmacy, Northwest A&F University, Yangling 712100, People's Republic of China
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