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Ruan BH, Yu ZF, Yang XQ, Yang YB, Hu M, Zhang ZX, Zhou QY, Zhou H, Ding ZT. New bioactive compounds from aquatic endophyte Chaetomium globosum. Nat Prod Res 2017; 32:1050-1055. [DOI: 10.1080/14786419.2017.1378210] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Bao-Hui Ruan
- School of Chemical Science and Technology, Yunnan University, Kunming, People’s Republic of China
| | - Ze-Fen Yu
- School of Life Science, Yunnan University, Kunming, People’s Republic of China
| | - Xue-Qiong Yang
- School of Chemical Science and Technology, Yunnan University, Kunming, People’s Republic of China
| | - Ya-Bin Yang
- School of Chemical Science and Technology, Yunnan University, Kunming, People’s Republic of China
| | - Ming Hu
- School of Chemical Science and Technology, Yunnan University, Kunming, People’s Republic of China
| | - Zhuo-Xi Zhang
- School of Chemical Science and Technology, Yunnan University, Kunming, People’s Republic of China
| | - Qing-Yan Zhou
- School of Chemical Science and Technology, Yunnan University, Kunming, People’s Republic of China
| | - Hao Zhou
- School of Chemical Science and Technology, Yunnan University, Kunming, People’s Republic of China
| | - Zhong-Tao Ding
- School of Chemical Science and Technology, Yunnan University, Kunming, People’s Republic of China
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Abstract
Various viral diseases, such as acquired immunodeficiency syndrome, influenza, and hepatitis, have emerged as leading causes of human death worldwide. Scientific endeavor since invention of DNA-dependent RNA polymerase of pox virus in 1967 resulted in better understanding of virus replication and development of various novel therapeutic strategies. Despite considerable advancement in every facet of drug discovery process, development of commercially viable, safe, and effective drugs for these viruses still remains a big challenge. Decades of intense research yielded a handful of natural and synthetic therapeutic options. But emergence of new viruses and drug-resistant viral strains had made new drug development process a never-ending battle. Small-molecule fungal metabolites due to their vast diversity, stereochemical complexity, and preapproved biocompatibility always remain an attractive source for new drug discovery. Though, exploration of therapeutic importance of fungal metabolites has started early with discovery of penicillin, recent prediction asserted that only a small percentage (5-10%) of fungal species have been identified and much less have been scientifically investigated. Therefore, exploration of new fungal metabolites, their bioassay, and subsequent mechanistic study bears huge importance in new drug discovery endeavors. Though no fungal metabolites so far approved for antiviral treatment, many of these exhibited high potential against various viral diseases. This review comprehensively discussed about antiviral activities of fungal metabolites of diverse origin against some important viral diseases. This also highlighted the mechanistic details of inhibition of viral replication along with structure-activity relationship of some common and important classes of fungal metabolites.
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Affiliation(s)
- Biswajit G Roy
- Department of Chemistry, Sikkim University, Gangtok, India
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Wang F, Jiang J, Hu S, Ma H, Zhu H, Tong Q, Cheng L, Hao X, Zhang G, Zhang Y. Secondary metabolites from endophytic fungus Chaetomium sp. induce colon cancer cell apoptotic death. Fitoterapia 2017; 121:86-93. [PMID: 28652012 DOI: 10.1016/j.fitote.2017.06.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 06/07/2017] [Accepted: 06/14/2017] [Indexed: 01/30/2023]
Abstract
A rare depsipeptide, chaetomiamide A (1), together with two known diketopiperazines (2, 3) were isolated from the cultures of endophytic fungus Chaetomium sp., which was isolated from the root of Cymbidium goeringii. Compound 1 represents a rare skeleton with a 13-membered ring system. It structure was established on the basis of spectroscopic data interpretation. The configuration of 1 was determined by NOESY and Marfey's analysis. These isolates were evaluated for anticancer activity and 3 displayed more potent cytotoxicity than the positive control cisplatin associated with G2/M cell cycle arrest. In addition, 3 induced apoptosis via caspase-3 induction and PARP cleavage, concomitantly with the increase of Bax and decrease of Bcl-2.
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Affiliation(s)
- Fuqian Wang
- Department of Pharmacy, Wuhan First Hospital, Wuhan 430022, China
| | - Jie Jiang
- Department of Pharmacy, Wuhan First Hospital, Wuhan 430022, China
| | - Song Hu
- Department of Pharmacy, Wuhan First Hospital, Wuhan 430022, China
| | - Haoran Ma
- Department of Pharmacy, Wuhan First Hospital, Wuhan 430022, China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qingyi Tong
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Lu Cheng
- Department of Pharmacy, Wuhan First Hospital, Wuhan 430022, China
| | - Xincai Hao
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmacy, Hubei University of Medicine, Shiyan 442000, China
| | - Geng Zhang
- Department of Pharmacy, Wuhan First Hospital, Wuhan 430022, China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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Ancheeva E, Küppers L, Akone SH, Ebrahim W, Liu Z, Mándi A, Kurtán T, Lin W, Orfali R, Rehberg N, Kalscheuer R, Daletos G, Proksch P. Expanding the Metabolic Profile of the FungusChaetomiumsp. through Co-culture with AutoclavedPseudomonas aeruginosa. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700288] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Elena Ancheeva
- Institute of Pharmaceutical Biology and Biotechnology; Heinrich Heine University; Universitätstrasse 1, Geb. 26.23 40225 Düsseldorf Germany
| | - Lisa Küppers
- Institute of Pharmaceutical Biology and Biotechnology; Heinrich Heine University; Universitätstrasse 1, Geb. 26.23 40225 Düsseldorf Germany
| | - Sergi Herve Akone
- Institute of Pharmaceutical Biology and Biotechnology; Heinrich Heine University; Universitätstrasse 1, Geb. 26.23 40225 Düsseldorf Germany
- Faculty of Science; Department of Chemistry; University of Douala; P. O. Box 24157 Douala Cameroon
| | - Weaam Ebrahim
- Institute of Pharmaceutical Biology and Biotechnology; Heinrich Heine University; Universitätstrasse 1, Geb. 26.23 40225 Düsseldorf Germany
- Department of Pharmacognosy; Faculty of Pharmacy; Mansoura University; 35516 Mansoura Egypt
| | - Zhen Liu
- Institute of Pharmaceutical Biology and Biotechnology; Heinrich Heine University; Universitätstrasse 1, Geb. 26.23 40225 Düsseldorf Germany
| | - Attila Mándi
- Department of Organic Chemistry; University of Debrecen; P. O. Box 400 4002 Debrecen Hungary
| | - Tibor Kurtán
- Department of Organic Chemistry; University of Debrecen; P. O. Box 400 4002 Debrecen Hungary
| | - Wenhan Lin
- State Key Laboratory of Natural and Biomimetic Drugs; Peking University; 100191 Beijing China
| | - Raha Orfali
- Department of Pharmacognosy; Faculty of Pharmacy; King Saud University; Riyadh Saudi Arabia
| | - Nidja Rehberg
- Institute of Pharmaceutical Biology and Biotechnology; Heinrich Heine University; Universitätstrasse 1, Geb. 26.23 40225 Düsseldorf Germany
| | - Rainer Kalscheuer
- Institute of Pharmaceutical Biology and Biotechnology; Heinrich Heine University; Universitätstrasse 1, Geb. 26.23 40225 Düsseldorf Germany
| | - Georgios Daletos
- Institute of Pharmaceutical Biology and Biotechnology; Heinrich Heine University; Universitätstrasse 1, Geb. 26.23 40225 Düsseldorf Germany
| | - Peter Proksch
- Institute of Pharmaceutical Biology and Biotechnology; Heinrich Heine University; Universitätstrasse 1, Geb. 26.23 40225 Düsseldorf Germany
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Yu FX, Chen Y, Yang YH, Li GH, Zhao PJ. A new epipolythiodioxopiperazine with antibacterial and cytotoxic activities from the endophytic fungus Chaetomium sp. M336. Nat Prod Res 2017; 32:689-694. [PMID: 28602097 DOI: 10.1080/14786419.2017.1338285] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Fei-Xue Yu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan University, Kunming, China
- Faculty of medicine, Kunming University of Science and Technology, Kunming, China
| | - Yao Chen
- Faculty of medicine, Kunming University of Science and Technology, Kunming, China
| | - Yin-He Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Guo-Hong Li
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan University, Kunming, China
| | - Pei-Ji Zhao
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, and Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan University, Kunming, China
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
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Fierro-Cruz JE, Jiménez P, Coy-Barrera E. Fungal endophytes isolated from Protium heptaphyllum and Trattinnickia rhoifolia as antagonists of Fusarium oxysporum. Rev Argent Microbiol 2017; 49:255-263. [PMID: 28495036 DOI: 10.1016/j.ram.2016.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 08/04/2016] [Accepted: 12/28/2016] [Indexed: 01/25/2023] Open
Abstract
Control of fungal pathogens is mainly addressed by the use of chemically synthesized fungicides which result in environmental pollution, developing resistance after prolonged use. In this context, endophytes have been recognized as potential biocontrollers, and also as a promising source of antifungal metabolites. Therefore, as part of our research on phytopathogen controllers, 355 fungal endophytes were isolated from Protium heptaphyllum and Trattinnickia rhoifolia (Burseraceae), both ethnobotanically important tree species that produce secondary metabolites of agronomic and industrial interest. Endophytes were tested by in vitro dual culture against Fusarium oxysporum, a phytopathogen of agronomic importance. Five endophytes exerted at least 40% inhibition on F. oxysporum growth. Ethyl acetate (EtOAc) extracts were obtained from the most active antagonistic fungi, after growing them in three different liquid media. The extracts were tested against a conidial suspension of F. oxysporum by direct bioautography. Two extracts derived from fungi identified as Chaetomium globosum, F211_UMNG and Meyerozima sp. F281_UMNG showed inhibition of pathogen growth. Isolate C. globosum, F211_UMNG was selected for a chemical analysis by RP-HPLC-DAD-ESI-MS and antifungal molecules such as cladosporin, chaetoatrosin A and chaetoviridin A were annotated and identified based on their MS data.
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Affiliation(s)
- Juan E Fierro-Cruz
- Universidad Militar Nueva Granada, Km 2 Cajicá - Zipaquirá, Cajicá, Colombia
| | - Pedro Jiménez
- Universidad Militar Nueva Granada, Km 2 Cajicá - Zipaquirá, Cajicá, Colombia
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Jiang C, Song J, Zhang J, Yang Q. Identification and characterization of the major antifungal substance against Fusarium Sporotrichioides from Chaetomium globosum. World J Microbiol Biotechnol 2017; 33:108. [DOI: 10.1007/s11274-017-2274-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/26/2017] [Indexed: 11/30/2022]
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Zhang Y, Cai J, Huang L, Xu Z, Yang X, Li J, Zhu X. Improving the productivity of 19,20-epoxy-cytochalasin Q in Xylaria sp. sof11 with culture condition optimization. Prep Biochem Biotechnol 2017; 46:461-6. [PMID: 26444437 DOI: 10.1080/10826068.2015.1068804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
19,20-Epoxy-cytochalasin Q (B5A) is a cytochalasin with a wide range of biological activities, which can be produced by Xylaria sp. sof11, a strain isolated from the seafloor of the northern South China Sea. Since the low titer of B5A has greatly limited its further studies, we have systematically conducted the fermentative optimization for B5A production in this article. The effects of major medium components, including the carbon and organic nitrogen sources, as well as of the concentration of sea salt, were respectively investigated through single-factor experiments. As a result, sucrose and fish meal were determined to be the key factors affecting the production of B5A. Then three important variables, sucrose, fish meal, and filling volume, were screened out by the Plackett-Burman (PB) design. The optimal level of these variables was further confirmed by response surface analysis. The final formulated medium was set as 35.2 g/L sucrose and 18.0 g/L fish meal, with filling volume of 34.6 mL, which could afford 440.3 mg/L production of B5A, approximately 4.4-fold higher than that in the original medium. The significantly improved productivity of B5A will facilitate the subsequent mechanistic and clinical studies of B5A.
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Affiliation(s)
- Yun Zhang
- a Institute of Bioengineering, College of Chemical and Biological Engineering , Zhejiang University , Hangzhou , China
| | - Jin Cai
- a Institute of Bioengineering, College of Chemical and Biological Engineering , Zhejiang University , Hangzhou , China
| | - Lei Huang
- a Institute of Bioengineering, College of Chemical and Biological Engineering , Zhejiang University , Hangzhou , China
| | - Zhinan Xu
- a Institute of Bioengineering, College of Chemical and Biological Engineering , Zhejiang University , Hangzhou , China
| | - Xiuliang Yang
- b Shangdong Jincheng Biopharmaceutical Corp. , Zibo , China
| | - Jiangtao Li
- b Shangdong Jincheng Biopharmaceutical Corp. , Zibo , China
| | - Xiangcheng Zhu
- c Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discovery , Changsha , China
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Wang D, Zhang Y, Li X, Pan H, Chang M, Zheng T, Sun J, Qiu D, Zhang M, Wei D, Qin J. Potential allelopathic azaphilones produced by the endophytic Chaetomium globosum TY1 inhabited in Ginkgo biloba using the one strain-many compounds method. Nat Prod Res 2017; 31:724-728. [PMID: 27686133 DOI: 10.1080/14786419.2016.1217208] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 07/02/2016] [Indexed: 10/21/2022]
Abstract
On the basis of the one strain-many compounds strategy, seven azaphilones, including Chaetomugilin A (1), D (2), S (3), I (4), J (5), Q (6) and O (7), were isolated from the endophytic Chaetomium globosum TY1. Their structures were identified by NMR and HRESIMS spectrometry data. All azaphilones were evaluated for plant growth regulation using eight species of herbaceous plant seeds seedling growth bioassay, which showed the plant growth influence of the seedling. Among these compounds tested, Chaetomugilin O (7) with tetrahydrofuran exhibited higher response index and lower IC50 values than positive control glyphosate, a broad-spectrum systemic herbicide. 1-3 also showed better or similar inhibit activity to glyphosate. The structure-allelopathic activity relationship analysis of these isolated azaphilones indicates that both tetrahydrofuran and tetrahydrofuran combine with lactones ring groups give potent inhibition of seedling growth. Chaetomugilin O and Chaetomugilin A, D, S could be used to develop natural eco-friendly herbicides.
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Affiliation(s)
- Dacheng Wang
- a College of Plant Science , Jilin University , Changchun , China
| | - Yamei Zhang
- a College of Plant Science , Jilin University , Changchun , China
| | - Xiang Li
- c Department of Biochemistry & Biomedical Sciences , McMaster University , Hamilton , Canada
| | - Hongyu Pan
- a College of Plant Science , Jilin University , Changchun , China
| | - Mengyuan Chang
- a College of Plant Science , Jilin University , Changchun , China
| | - Tianyu Zheng
- a College of Plant Science , Jilin University , Changchun , China
| | - Jinzhu Sun
- a College of Plant Science , Jilin University , Changchun , China
| | - Daren Qiu
- a College of Plant Science , Jilin University , Changchun , China
| | - Mingzhe Zhang
- a College of Plant Science , Jilin University , Changchun , China
| | - Dongsheng Wei
- b Department of Biology, Centre for Wood Science , University of Hamburg , Hamburg Germany
| | - Jianchun Qin
- a College of Plant Science , Jilin University , Changchun , China
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Wang MH, Jiang T, Ding G, Niu SB, Wang XW, Yu M, Gu YC, Zhang QB, Chen JH, Jia HM, Zou ZM. Molecular epigenetic approach activates silent gene cluster producing dimeric bis-spiro-azaphilones in Chaetomium globosum CBS148.51. J Antibiot (Tokyo) 2017; 70:801-804. [DOI: 10.1038/ja.2017.4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Revised: 12/26/2016] [Accepted: 12/29/2016] [Indexed: 12/26/2022]
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Chovanová K, Zámocký M. Detection of the antibacterial effect of Chaetomium cochliodes Palliser CCM F-232 based on agar plugs and unprocessed fungal substances from cultivation media. Biologia (Bratisl) 2016. [DOI: 10.1515/biolog-2016-0153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Wang XW, Houbraken J, Groenewald JZ, Meijer M, Andersen B, Nielsen KF, Crous PW, Samson RA. Diversity and taxonomy of Chaetomium and chaetomium-like fungi from indoor environments. Stud Mycol 2016; 84:145-224. [PMID: 28082757 PMCID: PMC5226397 DOI: 10.1016/j.simyco.2016.11.005] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
During a study of indoor fungi, 145 isolates belonging to Chaetomiaceae were cultured from air, swab and dust samples from 19 countries. Based on the phylogenetic analyses of DNA-directed RNA polymerase II second largest subunit (rpb2), β-tubulin (tub2), ITS and 28S large subunit (LSU) nrDNA sequences, together with morphological comparisons with related genera and species, 30 indoor taxa are recognised, of which 22 represent known species, seven are described as new, and one remains to be identified to species level. In our collection, 69 % of the indoor isolates with six species cluster with members of the Chaetomium globosum species complex, representing Chaetomium sensu stricto. The other indoor species fall into nine lineages that are separated from each other with several known chaetomiaceous genera occurring among them. No generic names are available for five of those lineages, and the following new genera are introduced here: Amesia with three indoor species, Arcopilus with one indoor species, Collariella with four indoor species, Dichotomopilus with seven indoor species and Ovatospora with two indoor species. The generic concept of Botryotrichum is expanded to include Emilmuelleria and the chaetomium-like species B. muromum (= Ch. murorum) in which two indoor species are included. The generic concept of Subramaniula is expanded to include several chaetomium-like taxa as well as one indoor species. Humicola is recognised as a distinct genus including two indoor taxa. According to this study, Ch. globosum is the most abundant Chaetomiaceae indoor species (74/145), followed by Ch. cochliodes (17/145), Ch. elatum (6/145) and B. piluliferum (5/145). The morphological diversity of indoor Chaetomiaceae as well as the morphological characteristics of the new genera are described and illustrated. This taxonomic study redefines the generic concept of Chaetomium and provides new insight into the phylogenetic relationships among different genera within Chaetomiaceae.
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Affiliation(s)
- X W Wang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, No. 3, 1st Beichen West Road, Chaoyang District, Beijing 100101, China; CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - J Houbraken
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - J Z Groenewald
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - M Meijer
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - B Andersen
- DTU Bioengineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - K F Nielsen
- DTU Bioengineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - P W Crous
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands; Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria 0002, South Africa; Microbiology, Department of Biology, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - R A Samson
- CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
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Jiang T, Wang M, Li L, Si J, Song B, Zhou C, Yu M, Wang X, Zhang Y, Ding G, Zou Z. Overexpression of the Global Regulator LaeA in Chaetomium globosum Leads to the Biosynthesis of Chaetoglobosin Z. JOURNAL OF NATURAL PRODUCTS 2016; 79:2487-2494. [PMID: 27759375 DOI: 10.1021/acs.jnatprod.6b00333] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Overexpression of laeA in Chaetomium globosum CBS148.51 up-regulated expression of the chaetoglobosin gene cluster and resulted in the isolation of a new cytochalasan, chaetoglobosin Z (1), together with six known analogues, chaetoglobosins A (2), B (3), D (4), E (5), O (6), and V (7). RT-PCR analysis confirmed that the key genes in the chaetoglobosin gene cluster were significantly up-regulated. The structure of the new compound chaetoglobosin Z (1) was elucidated using NMR data. The relative and absolute configurations were determined by NOESY and electronic circular dichroism combined with quantum-chemical calculations adopting time-dependent density functional theory methods, respectively. These compounds displayed strong biological effects against the HepG 2 cell line compared with the positive control. The results further supported that LaeA is a global regulator that could up-regulate and/or activate cryptic gene clusters to produce new secondary metabolites.
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Affiliation(s)
- Tao Jiang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development , Beijing, 100193, People's Republic of China
| | - Menghua Wang
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development , Beijing, 100193, People's Republic of China
| | - Li Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica , Beijing 100050, People's Republic of China
| | - Jinguang Si
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development , Beijing, 100193, People's Republic of China
- School of Pharmacy, Henan University of Traditional Chinese Medicine , Zhengzhou 450046, People's Republic of China
| | - Bo Song
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development , Beijing, 100193, People's Republic of China
| | - Cao Zhou
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development , Beijing, 100193, People's Republic of China
| | - Meng Yu
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development , Beijing, 100193, People's Republic of China
| | - Xuewei Wang
- Institute of Microbiology, Chinese Academy of Sciences , Beijing 100090, People's Republic of China
| | - Yonggang Zhang
- Key Laboratory for Applied Microbiology of Shandong Province , Jinan 250014, People's Republic of China
| | - Gang Ding
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development , Beijing, 100193, People's Republic of China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica , Beijing 100050, People's Republic of China
| | - Zhongmei Zou
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development , Beijing, 100193, People's Republic of China
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Zhou W, Starr JL, Krumm JL, Sword GA. The fungal endophyteChaetomium globosumnegatively affects both above- and belowground herbivores in cotton. FEMS Microbiol Ecol 2016; 92:fiw158. [DOI: 10.1093/femsec/fiw158] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/14/2016] [Indexed: 02/03/2023] Open
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Biological Evaluation of Endophytic Fungus Chaetomium sp. NF15 of Justicia adhatoda L.: A Potential Candidate for Drug Discovery. Jundishapur J Microbiol 2016; 9:e29978. [PMID: 27635208 PMCID: PMC5013492 DOI: 10.5812/jjm.29978] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 12/28/2015] [Accepted: 01/29/2016] [Indexed: 12/18/2022] Open
Abstract
Background The endophytes of medicinal plants, such as Justicia adhatoda L., represent a promising and largely underexplored domain that is considered as a repository of biologically active compounds. Objectives The aim of present study was isolation, identification, and biological evaluation of endophytic fungi associated with the J. adhatoda L. plant for the production of antimicrobial, antioxidant, and cytotoxic compounds Materials and Methods Endophytic fungi associated with the J. adhatoda L. plant were isolated from healthy plant parts and taxonomically characterized through morphological, microscopic, and 18S rDNA sequencing methods. The screening for bioactive metabolite production was achieved using ethyl acetate extracts, followed by the optimization of different parameters for maximum production of bioactive metabolites. Crude and partially purified extracts were used to determine the antimicrobial, antioxidant, and cytotoxic potential Results Out of six endophytic fungal isolates, Chaetomium sp. NF15 showed the most promising biological activity and was selected for detailed study. The crude ethyl acetate extract of NF15 isolate after cultivation under optimized culture conditions showed promising antimicrobial activity, with significant inhibition of the clinical isolates of Staphylococcus aureus (87%, n=42), Pseudomonas aeruginosa (> 85%, n = 41), and Candida albicans (62%, n = 24). Conclusions The present study confirms the notion of selecting endophytic fungi of medicinal plant Justicia for the bioassay-guided isolation of its bioactive compounds, and demonstrates that endophytic fungus Chaetomium sp. NF15 could be a potential source of bioactive metabolites
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Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC, Bhat JD, Dayarathne MC, Huang SK, Norphanphoun C, Senanayake IC, Perera RH, Shang QJ, Xiao Y, D’souza MJ, Hongsanan S, Jayawardena RS, Daranagama DA, Konta S, Goonasekara ID, Zhuang WY, Jeewon R, Phillips AJL, Abdel-Wahab MA, Al-Sadi AM, Bahkali AH, Boonmee S, Boonyuen N, Cheewangkoon R, Dissanayake AJ, Kang J, Li QR, Liu JK, Liu XZ, Liu ZY, Luangsa-ard JJ, Pang KL, Phookamsak R, Promputtha I, Suetrong S, Stadler M, Wen T, Wijayawardene NN. Families of Sordariomycetes. FUNGAL DIVERS 2016. [DOI: 10.1007/s13225-016-0369-6] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Endophytic fungus strain 28 isolated from Houttuynia cordata possesses wide-spectrum antifungal activity. Braz J Microbiol 2016; 47:480-8. [PMID: 26991297 PMCID: PMC4874678 DOI: 10.1016/j.bjm.2016.01.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 10/07/2015] [Indexed: 01/12/2023] Open
Abstract
The aim of this paper is to identify and investigate an endophytic fungus (strain 28) that was isolated from Houttuynia cordata Thunb, a famous and widely-used Traditional Chinese Medicine. Based on morphological methods and a phylogenetic analysis of ITS sequences, this strain was identified as Chaetomium globosum. An antifungal activity bioassay demonstrated that the crude ethyl acetate (EtOAc) extracts of strain 28 had a wide antifungal spectrum and strong antimicrobial activity, particularly against Exserohilum turcicum (Pass.) Leonard et Suggs, Botrytis cinerea persoon and Botrytis cinerea Pers. ex Fr. Furthermore, the fermentation conditions, extraction method and the heat stability of antifungal substances from strain 28 were also studied. The results showed that optimal antifungal activity can be obtained with the following parameters: using potato dextrose broth (PDB) as the base culture medium, fermentation for 4–8 d (initial pH: 7.5), followed by extraction with EtOAc. The extract was stable at temperatures up to 80 °C. This is the first report on the isolation of endophytic C. globosum from H. cordata to identify potential alternative biocontrol agents that could provide new opportunities for practical applications involving H. cordata.
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Wang MH, Li L, Jiang T, Wang XW, Sun BD, Song B, Zhang QB, Jia HM, Ding G, Zou ZM. Stereochemical determination of tetrahydropyran-substituted xanthones from fungus Chaetomium murorum. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.10.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sacramento CQ, Marttorelli A, Fintelman-Rodrigues N, de Freitas CS, de Melo GR, Rocha MEN, Kaiser CR, Rodrigues KF, da Costa GL, Alves CM, Santos-Filho O, Barbosa JP, Souza TML. Aureonitol, a Fungi-Derived Tetrahydrofuran, Inhibits Influenza Replication by Targeting Its Surface Glycoprotein Hemagglutinin. PLoS One 2015; 10:e0139236. [PMID: 26462111 PMCID: PMC4603893 DOI: 10.1371/journal.pone.0139236] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 09/10/2015] [Indexed: 11/24/2022] Open
Abstract
The influenza virus causes acute respiratory infections, leading to high morbidity and mortality in groups of patients at higher risk. Antiviral drugs represent the first line of defense against influenza, both for seasonal infections and pandemic outbreaks. Two main classes of drugs against influenza are in clinical use: M2-channel blockers and neuraminidase inhibitors. Nevertheless, because influenza strains that are resistant to these antivirals have been described, the search for novel compounds with different mechanisms of action is necessary. Here, we investigated the anti-influenza activity of a fungi-derived natural product, aureonitol. This compound inhibited influenza A and B virus replication. This compound was more effective against influenza A(H3N2), with an EC50 of 100 nM. Aureonitol cytoxicity was also very low, with a CC50 value of 1426 μM. Aureonitol inhibited influenza hemagglutination and, consequently, significantly impaired virus adsorption. Molecular modeling studies revealed that aureonitol docked in the sialic acid binding site of hemagglutinin, forming hydrogen bonds with highly conserved residues. Altogether, our results indicate that the chemical structure of aureonitol is promising for future anti-influenza drug design.
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Affiliation(s)
- Carolina Q. Sacramento
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Andressa Marttorelli
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Natalia Fintelman-Rodrigues
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Caroline S. de Freitas
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gabrielle R. de Melo
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marco E. N. Rocha
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Química de Produtos Naturais 5, Farmanguinhos, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos R. Kaiser
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Katia F. Rodrigues
- Laboratório de Taxonomia, Bioquímica e Bioprospecção de Fungos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Gisela L. da Costa
- Laboratório de Taxonomia, Bioquímica e Bioprospecção de Fungos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cristiane M. Alves
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Osvaldo Santos-Filho
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jussara P. Barbosa
- Laboratório de Taxonomia, Bioquímica e Bioprospecção de Fungos, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Thiago Moreno L. Souza
- Laboratório de Vírus Respiratórios, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Laboratório de Imunofarmacologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- Centro de Desenvolvimento Tecnológico em Saúde, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail:
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Chen J, Wang C, Lan W, Huang C, Lin M, Wang Z, Liang W, Iwamoto A, Yang X, Liu H. Gliotoxin Inhibits Proliferation and Induces Apoptosis in Colorectal Cancer Cells. Mar Drugs 2015; 13:6259-73. [PMID: 26445050 PMCID: PMC4626688 DOI: 10.3390/md13106259] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 08/27/2015] [Accepted: 09/24/2015] [Indexed: 12/29/2022] Open
Abstract
The discovery of new bioactive compounds from marine natural sources is very important in pharmacological research. Here we developed a Wnt responsive luciferase reporter assay to screen small molecule inhibitors of cancer associated constitutive Wnt signaling pathway. We identified that gliotoxin (GTX) and some of its analogues, the secondary metabolites from marine fungus Neosartorya pseufofischeri, acted as inhibitors of the Wnt signaling pathway. In addition, we found that GTX downregulated the β-catenin levels in colorectal cancer cells with inactivating mutations of adenomatous polyposis coli (APC) or activating mutations of β-catenin. Furthermore, we demonstrated that GTX induced growth inhibition and apoptosis in multiple colorectal cancer cell lines with mutations of the Wnt signaling pathway. Together, we illustrated a practical approach to identify small-molecule inhibitors of the Wnt signaling pathway and our study indicated that GTX has therapeutic potential for the prevention or treatment of Wnt dependent cancers and other Wnt related diseases.
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Affiliation(s)
- Junxiong Chen
- Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
| | - Chenliang Wang
- Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
- Institute of Human Virology and Key Laboratory of Tropical Disease Control of Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong, China.
| | - Wenjian Lan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, Guangdong, China.
| | - Chunying Huang
- Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
| | - Mengmeng Lin
- Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
| | - Zhongyang Wang
- Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
| | - Wanling Liang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, Guangdong, China.
| | - Aikichi Iwamoto
- Advanced Clinical Research Center, Institute of Medical Science, University of Tokyo, Tokyo 108-8639, Japan.
| | - Xiangling Yang
- Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
| | - Huanliang Liu
- Guangdong Institute of Gastroenterology and the Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
- Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases, Sun Yat-sen University, Guangzhou 510655, Guangdong, China.
- Institute of Human Virology and Key Laboratory of Tropical Disease Control of Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, Guangdong, China.
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Phylogenetic reassessment of the Chaetomium globosum species complex. Persoonia - Molecular Phylogeny and Evolution of Fungi 2015; 36:83-133. [PMID: 27616789 PMCID: PMC4988377 DOI: 10.3767/003158516x689657] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 06/24/2015] [Indexed: 12/03/2022]
Abstract
Chaetomium globosum, the type species of the genus, is ubiquitous, occurring on a wide variety of substrates, in air and in marine environments. This species is recognised as a cellulolytic and/or endophytic fungus. It is also known as a source of secondary metabolites with various biological activities, having great potential in the agricultural, medicinal and industrial fields. On the negative side, C. globosum has been reported as an air contaminant causing adverse health effects and as causal agent of human fungal infections. However, the taxonomic status of C. globosum is still poorly understood. The contemporary species concept for this fungus includes a broadly defined morphological diversity as well as a large number of synonymies with limited phylogenetic evidence. The aim of this study is, therefore, to resolve the phylogenetic limits of C. globosum s.str. and related species. Screening of isolates in the collections of the CBS-KNAW Fungal Biodiversity Centre (The Netherlands) and the China General Microbiological Culture Collection Centre (China) resulted in recognising 80 representative isolates of the C. globosum species complex. Thirty-six species are identified based on phylogenetic inference of six loci, supported by typical morphological characters, mainly ascospore shape. Of these, 12 species are newly described here. Additionally, C. cruentum, C. mollipilium, C. rectum, C. subterraneum and two varieties of C. globosum are synonymised under C. globosum s.str., and six species are resurrected, i.e. C. angustispirale, C. coarctatum, C. cochliodes, C. olivaceum, C. spiculipilium and C. subglobosum. Chaetomium ascotrichoides is segregated from C. madrasense and the genus name Chaetomidium is rejected. Five species, including C. globosum s.str., are typified here to stabilise their taxonomic status. A further evaluation of the six loci used in this study as potential barcodes indicated that the 28S large subunit (LSU) nrDNA and the internal transcribed spacer regions and intervening 5.8S nrRNA (ITS) gene regions were unreliable to resolve species, whereas β-tubulin (tub2) and RNA polymerase II second largest subunit (rpb2) showed the greatest promise as DNA barcodes for differentiating Chaetomium species. This study provides a starting point to establish a more robust classification system for Chaetomium and for the Chaetomiaceae.
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Shen W, Mao H, Huang Q, Dong J. Benzenediol lactones: a class of fungal metabolites with diverse structural features and biological activities. Eur J Med Chem 2015; 97:747-77. [DOI: 10.1016/j.ejmech.2014.11.067] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 11/04/2014] [Accepted: 11/26/2014] [Indexed: 12/12/2022]
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Lu S, Sun W, Meng J, Wang A, Wang X, Tian J, Fu X, Dai J, Liu Y, Lai D, Zhou L. Bioactive bis-naphtho-γ-pyrones from rice false Smut pathogen Ustilaginoidea virens. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:3501-3508. [PMID: 25781489 DOI: 10.1021/acs.jafc.5b00694] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ustilaginoidins were bis-naphtho-γ-pyrones mycotoxins possessing an aR configuration of the chiral axis previously reported from the false smut balls of rice infected by the fungal pathogen Ustilaginoidea virens. To investigate the chemical diversity of these metabolites and their bioactivities, we fermented this fungus on solid rice media, which afforded the isolation of 13 ustilaginoidins, including seven new compounds, namely ustilaginoidins K-P, 1-6, and E1, 7, together with the known ustilaginoidins A, 8, D, 9, E, 10, F, 11, and G, 12, and isochaetochromin B2, 13. The structures of the new compounds were elucidated by using (1D, 2D) NMR, high-resolution mass spectrometry, UV, and circular dichroism, as well as by comparison with the literature data. A plausible biosynthesis pathway was proposed for these dimeric polyketides. The isolated compounds were evaluated for their antibacterial, cytotoxic, and radicle elongation inhibitory activities. Ustilaginoidins K, 1 and L, 2 showed cytotoxic activities on the A2780 human ovarian cancer cell line with IC50 values of 4.18 and 7.26 μM, respectively. Ustilaginoidins N, 4, D, 9, E, 10, and G, 12 were active against the tested pathogenic bacteria with MIC values in the range of 16-64 μg/mL. Ustilaginoidins O, 5, E, 10, and F, 11, and isochaetochromin B2, 13 displayed moderate inhibitory activity on the radicle elongation of rice seeds.
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Affiliation(s)
- Shiqiong Lu
- †MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Weibo Sun
- †MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jiajia Meng
- †MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ali Wang
- †MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xiaohan Wang
- †MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Jin Tian
- †MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xiaoxiang Fu
- †MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | | | - Yang Liu
- §Institute of Agro-products Processing Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Daowan Lai
- †MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ligang Zhou
- †MOA Key Laboratory of Plant Pathology, Department of Plant Pathology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
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Li H, Tian JM, Tang HY, Pan SY, Zhang AL, Gao JM. Chaetosemins A–E, new chromones isolated from an Ascomycete Chaetomium seminudum and their biological activities. RSC Adv 2015. [DOI: 10.1039/c5ra00525f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fifteen polyketide chromones, including four new ones, chaetosemins B–E (2–5), with 4 bearing a new skeleton, and two new natural products, chaetosemin A (1) and (+)-(S)-chaetoquadrin J (14), were isolated from cultures of Chaetomium seminudum.
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Affiliation(s)
- He Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Science
- Northwest A&F University
- Yangling 712100
- China
| | - Jun-Mian Tian
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Science
- Northwest A&F University
- Yangling 712100
- China
| | - Hao-Yu Tang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Science
- Northwest A&F University
- Yangling 712100
- China
| | - Shi-Yin Pan
- Xi'an No. 1 Hospital
- Shaanxi Institute of Ophthalmology
- Xi'an 710002
- China
| | - An-Ling Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Science
- Northwest A&F University
- Yangling 712100
- China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Science
- Northwest A&F University
- Yangling 712100
- China
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Zhang Q, Xiao J, Sun QQ, Qin JC, Pescitelli G, Gao JM. Characterization of cytochalasins from the endophytic Xylaria sp. and their biological functions. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:10962-9. [PMID: 25350301 DOI: 10.1021/jf503846z] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Bioassay-guided fractionation of the fermentation extract of Xylaria sp. XC-16, an endophyte from Toona sinensis led to the isolation of two new cytochalasans cytochalasin Z27, 1, and cytochalasin Z28, 2, along with three known compounds seco-cytochalasin E, 3, and cytochalasin Z18, 4, and cytochalasin E, 5. The structures of 1 and 2 were elucidated by spectroscopic and electronic circular dichroism methods. Compound 5 was shown to be potently cytotoxic against brine shrimp (LC50 = 2.79 μM), comparable to that of the positive agent toosendanin (LC50 = 4.03 μM), and also exhibited potential phytotoxic effects on Lactuca sativa and Raphanus sativus L. seedlings, which are higher than that of the positive control glyphosate. Additionally, the fungicidal effect of 2 against the phytopathogen Gibberella saubinetti was better than that of hymexazol. This is the first report of the three types of cytochalasins present in genus Xylaria. A structure-phytotoxicity activity relationship is also discussed.
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Affiliation(s)
- Qiang Zhang
- College of Science, Northwest A&F University , Yangling 712100, Shaanxi P. R. China
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Li H, Xiao J, Gao YQ, Tang JJ, Zhang AL, Gao JM. Chaetoglobosins from Chaetomium globosum, an endophytic fungus in Ginkgo biloba, and their phytotoxic and cytotoxic activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:3734-41. [PMID: 24708412 DOI: 10.1021/jf500390h] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In preceding studies, cultivation of Chaetomium globosum, an endophytic fungus in Ginkgo biloba, produced five cytochalasan mycotoxins, chaetoglobosins A, G, V, Vb, and C (1-5), in three media. In the present work, five known chaetoglobosins, C, E, F, Fex, and 20-dihydrochaetoglobosin A (5-9), together with the four known compounds (11-14), were isolated from the MeOH extracts of the solid culture of the same endophyte. The structures of these metabolites were elucidated on the basis of spectroscopic analysis. Treatment of chaetoglobosin F (7) with (diethylamino)sulfur trifluoride (DAST) in dichloromethane afforded an unexpected fluorinated chaetoglobosin, named chaetoglobosin Fa (10), containing an oxolane ring between C-20 and C-23. The phytotoxic effects of compounds 1, 3-8, and 10 were assayed on radish seedlings; some of these compounds (1, 3, and 6-8) significantly inhibited the growth of radish (Raphanus sativus) seedlings with inhibitory rates of >60% at a concentration of 50 ppm, which was comparable or superior to the positive control, glyphosate. In addition, the cytotoxic activities against HCT116 human colon cancer cells were also tested, and compounds 1 and 8-10 showed remarkable cytotoxicity with IC50 values ranging from 3.15 to 8.44 μM, in comparison to the positive drug etoposide (IC50 = 2.13 μM). The epoxide ring between C-6 and C-7 or the double bond at C-6(12) led to a drastically increased cytotoxicity, and chaetoglobosin Fa (10) displayed a markedly increased cytotoxicity but decreased phytotoxicity.
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Affiliation(s)
- He Li
- Shaanxi Engineering Center of Bioresource Chemistry and Sustainable Utilization, College of Science, Northwest A&F University , Yangling 712100, Shaanxi, People's Republic of China
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Xiao J, Zhang Q, Gao YQ, Tang JJ, Zhang AL, Gao JM. Secondary metabolites from the endophytic Botryosphaeria dothidea of Melia azedarach and their antifungal, antibacterial, antioxidant, and cytotoxic activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:3584-3590. [PMID: 24689437 DOI: 10.1021/jf500054f] [Citation(s) in RCA: 130] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Two new metabolites, an α-pyridone derivative, 3-hydroxy-2-methoxy-5-methylpyridin-2(1H)-one (1), and a ceramide derivative, 3-hydroxy-N-(1-hydroxy-3-methylpentan-2-yl)-5-oxohexanamide (2), and a new natural product, 3-hydroxy-N-(1-hydroxy-4-methylpentan-2-yl)-5-oxohexanamide (3), along with 15 known compounds including chaetoglobosin C (7) and chaetoglobosin F (8) were isolated from the solid culture of the endophytic fungus Botryosphaeria dothidea KJ-1, collected from the stems of white cedar (Melia azedarach L). The structures were elucidated on the basis of spectroscopic analysis (1D and 2D NMR experiments and by mass spectrometric measurements), and the structure of 1 was confirmed by X-ray single-crystal diffraction. These metabolites were evaluated in vitro for antimicrobial, antioxidant, and cytotoxicity activities. Pycnophorin (4) significantly inhibited the growth of Bacillus subtilis and Staphyloccocus aureus with equal minimum inhibitory concentration (MIC) values of 25 μM. Stemphyperylenol (5) displayed a potent antifungal activity against the plant pathogen Alternaria solani with MIC of 1.57 μM comparable to the commonly used fungicide carbendazim. Both altenusin (9) and djalonensone (10) showed markedly DPPH radical scavenging activities. In addition, stemphyperylenol (5) and altenuene (6) exhibited strong cytotoxicity against HCT116 cancer cell line with a median inhibitory concentration (IC50) value of 3.13 μM in comparison with the positive control etoposide (IC50 = 2.13 μM). This is the first report of the isolation of these compounds from the endophytic B. dothidea.
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Affiliation(s)
- Jian Xiao
- Shaanxi Engineering Center of Bioresource Chemistry and Sustainable Utilization, College of Science, Northwest A&F University , Yangling 712100, Shaanxi China
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Xu GB, Wang NN, Bao JK, Yang T, Li GY. New Orsellinic Acid Esters from FungusChaetomium globosporum. Helv Chim Acta 2014. [DOI: 10.1002/hlca.201300329] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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80
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Lu K, Zhang Y, Li L, Wang X, Ding G. Chaetochromones A and B, two new polyketides from the fungus Chaetomium indicum (CBS.860.68). Molecules 2013; 18:10944-52. [PMID: 24013408 PMCID: PMC6269930 DOI: 10.3390/molecules180910944] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 08/28/2013] [Accepted: 09/02/2013] [Indexed: 01/22/2023] Open
Abstract
Chaetochromones A (1) and B (2), two novel polyketides, were isolated from the crude extract of fungus Chaetomium indicum (CBS.860.68) together with three known analogues PI-3(3), PI-4 (4) and SB236050 (5). The structures of these compounds were determined by HRESI-MS and NMR experiments. Chaetochromones A (1) and B (2) are a member of the polyketides family, which might originate from a similar biogenetic pathway as the known compounds PI-3 (3), PI-4 (4) and SB236050 (5). The biological activities of these secondary metabolites were evaluated against eight plant pathogens, including Alternaria alternata, Ilyonectria radicicola, Trichoderma viride pers, Aspergillus niger, Fusarium verticillioide, Irpex lacteus (Fr.), Poria placenta (Fr.) Cooke and Coriolus versicolor (L.) Quél. Compound 1 displayed moderate inhibitory rate (>60%) against the brown rot fungus Poria placenta (Fr.) Cooke, which causes significant wood decay. In addition, the cytotoxic activities against three cancer cell lines A549, MDA-MB-231, PANC-1 were also tested, without any inhibitory activities being detected.
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Affiliation(s)
- Keyang Lu
- Key Laboratory of wood science and Technology of State Forestry Administration, Research Institute of Wood Industry, Chinese Academy of forestry, Beijing 100091, China; E-Mail: (K.L.)
| | - Yisheng Zhang
- Key Laboratory of wood science and Technology of State Forestry Administration, Research Institute of Wood Industry, Chinese Academy of forestry, Beijing 100091, China; E-Mail: (K.L.)
- School of Technology, Beijing Forestry University, Beijing 100091, China
- Authors to whom correspondence should be addressed; E-Mails: (Y.Z.); (G.D.); Tel.: +86-10-6288-9412 (Y.Z.); Fax: +86-10-6288-1937 (Y.Z.)
| | - Li Li
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; E-Mail:
| | - Xuewei Wang
- State Key Laboratory of Systematic Mycology & Lichenology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080, China; E-Mail: (X.W.)
| | - Gang Ding
- Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100193, China
- Authors to whom correspondence should be addressed; E-Mails: (Y.Z.); (G.D.); Tel.: +86-10-6288-9412 (Y.Z.); Fax: +86-10-6288-1937 (Y.Z.)
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81
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Anticipation of future notifications to EFSA of microbial taxonomic units intentionally introduced into the food chain. EFSA J 2013. [DOI: 10.2903/j.efsa.2013.3340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Affiliation(s)
- Jin-Ming Gao
- Shaanxi Engineering Center of Bioresource Chemistry & Sustainable Utilization, Department of Chemistry and Chemical Engineering, College of Science, Northwest A&F University, 3 Taicheng Road, Yangling 712100, Shaanxi, China.
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83
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Xu GB, Li LM, Fang DM, Li GY, Zhang GL, Wu ZJ. Electrospray ionization tandem mass spectrometry of chaetoglobosins. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:2115-2122. [PMID: 22886807 DOI: 10.1002/rcm.6329] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
RATIONALE Chaetoglobosins are a family of macrocyclic polyketide alkaloids. They possess many similar isomers and exhibit a wide range of biological activities. Thus, there is a need for reliable, fast, and low-cost analysis of this class of compounds. METHODS A series of seven chaetoglobosins from Chaetomium globosum, including two types of isomers, were investigated using electrospray ionization quadrupole time-of-flight tandem mass spectrometry (ESI-QTOF-MS/MS) in both positive- and negative-ion mode. The identity of major product ions was supported by deuterium-labeling experiments. RESULTS In positive-ion mode, the product ion at m/z 130 is the characteristic ion of the indolyl group. A McLafferty rearrangement might play a significant role in the fragmentation of the macrocycle moiety for most chaetoglobosins and produces two series of characteristic product ions, accompanied by neutral losses. The characteristic product ion at m/z 309 in the MS/MS spectrum of chaetoglobosins E indicates the structure of the cyclic olefinic bond in ring B and can be used to distinguish it from the isomers, chaetoglobosins F(ex) , which has an exocyclic double bond on ring B. In negative-ion mode, the McLafferty rearrangement has an important role in the fragmentation pattern of the macrocycle. Some high-abundance radical ions were detected. The radical product ion at m/z 138 might differentiate chaetoglobosins F and penochalasin F, isomers which have very similar structures. CONCLUSIONS In summary, complementary information obtained from fragmentation experiments of [M+H](+) and [M-H](-) precursor ions is especially valuable for rapid identification of chaetoglobosins. The high-abundance radical ions in negative-ion mode are also of scientific interest.
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Affiliation(s)
- Guo-Bo Xu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, P.R. China
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84
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Xue M, Zhang Q, Gao JM, Li H, Tian JM, Pescitelli G. Chaetoglobosin Vb
from Endophytic Chaetomium Globosum
: Absolute Configuration of Chaetoglobosins. Chirality 2012; 24:668-74. [DOI: 10.1002/chir.22068] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 04/12/2012] [Indexed: 02/02/2023]
Affiliation(s)
- Min Xue
- Shaanxi Engineering Center of Bioresource Chemistry & Sustainable Utilization, College of Science; Northwest A&F University; Yangling People's Republic of China
| | - Qiang Zhang
- Shaanxi Engineering Center of Bioresource Chemistry & Sustainable Utilization, College of Science; Northwest A&F University; Yangling People's Republic of China
| | - Jin-Ming Gao
- Shaanxi Engineering Center of Bioresource Chemistry & Sustainable Utilization, College of Science; Northwest A&F University; Yangling People's Republic of China
| | - He Li
- Shaanxi Engineering Center of Bioresource Chemistry & Sustainable Utilization, College of Science; Northwest A&F University; Yangling People's Republic of China
| | - Jun-Mian Tian
- Shaanxi Engineering Center of Bioresource Chemistry & Sustainable Utilization, College of Science; Northwest A&F University; Yangling People's Republic of China
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale; Università di Pisa; Pisa Italy
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