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Dong JY, Tang MC, Liu L. α-Pyrone Derivatives from Calcarisporium arbuscula Discovered by Genome Mining. JOURNAL OF NATURAL PRODUCTS 2023; 86:2496-2501. [PMID: 37924510 DOI: 10.1021/acs.jnatprod.3c00685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2023]
Abstract
A highly reducing polyketide synthase (HRPKS) gene cluster from the genome of Calcarisporium arbuscula was identified through genome mining. Heterologous expression of this cluster led to the production of four new α-pyrone compounds, calcapyrones A (1) and B (2), along with their biosynthetic intermediates calcapyrones C (3) and D (4). The structures of these compounds were elucidated on the basis of extensive spectroscopic experiments, and the absolute configurations of the 7,8-diol moieties in 1 and 2 were assigned using Snatzke's method. The biosynthetic pathway of 1 and 2 was established through in vivo and in vitro experiments.
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Affiliation(s)
- Jia-Yu Dong
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Man-Cheng Tang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Ling Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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2
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Zhong YJ, Cao F, Hu LS, Xu CX, Zhu YA, Chen X, Mao XM. Complex Interplay and Catalytic Versatility of Tailoring Enzymes for Efficient and Selective Biosynthesis of Fungal Mycotoxins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:311-319. [PMID: 36571252 DOI: 10.1021/acs.jafc.2c07681] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Mycotoxins have substantial impacts on agricultural production and food preservation. Some have high similarities in bioactivity but subtle differences on structures from various fungal producers. Understanding of their complex cross-biosynthesis will provide new insights into enzyme functions and food safety. Here, based on structurally related mycotoxins, such as aurovertins, asteltoxin, and citreoviridin, we showed that methyltransferase (MT)-catalyzed methylation is required for efficient oxidation and polyketide stability. MTs have broad interactions with polyketide synthases and flavin-containing monooxygenases (FMOs), while MT AstB is required for FMO AstC functionality in vivo. FMOs have common catalysis on pyrone-polyene intermediates but different catalytic specificity and efficiency on oxidative intermediates for the selective production of more toxic and complex mycotoxins. Thus, the subtle protein interaction and elaborate versatile catalysis of biosynthetic enzymes contribute to the efficient and selective biosynthesis of these structure-related mycotoxins and provide the basis to re-evaluate and control mycotoxins for agricultural and food safety.
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Affiliation(s)
- Yong-Jun Zhong
- School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, Zhejiang Province, China
- Institute of Pharmaceutical Biotechnology, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Fei Cao
- Institute of Pharmaceutical Biotechnology, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Long-Shuang Hu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, Zhejiang Province, China
| | - Chu-Xuan Xu
- Institute of Pharmaceutical Biotechnology, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Yan-An Zhu
- School of Pharmaceutical Sciences, Taizhou University, Jiaojiang 318000, Zhejiang Province, China
- Taizhou Hospital, 150# Ximen Street, Linhai 317099, Zhejiang Province, China
| | - Xuepeng Chen
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou 310006, Zhejiang Province, China
| | - Xu-Ming Mao
- Institute of Pharmaceutical Biotechnology, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
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Liu Q, Qu S, He G, Wei J, Dong C. Mating-Type Genes Play an Important Role in Fruiting Body Development in Morchella sextelata. J Fungi (Basel) 2022; 8:jof8060564. [PMID: 35736047 PMCID: PMC9225556 DOI: 10.3390/jof8060564] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 02/01/2023] Open
Abstract
True morels (Morchella spp.) are edible mushrooms that are commercially important worldwide due to their rich nutrition and unique appearance. In recent years, outdoor cultivation has been achieved and expanded on a large scale in China. However, the mechanisms of fruiting body development in morels are poorly understood. In this study, the role of mating-type genes in fruiting body development was researched. Fruiting bodies cultivated with different mating-type strains showed no difference in appearance, but the ascus and ascospores were slightly malformed in fruiting bodies obtained from the MAT1-1 strains. The transcript levels of mating-type genes and their target genes revealed that the regulatory mechanisms were conserved in ascomycetes fungi. The silencing of mat1-2-1 by RNA interference verified the direct regulatory effect of mat1-2-1 on its target genes at the asexual stage. When cultivated with the spawn of single mating-type strains of MAT1-1 or MAT1-2, only one corresponding mating-type gene was detected in the mycelial and conidial samples, but both mat1-1-1 and mat1-2-1 were detected in the samples of primordium, pileus, and stipe. An understanding of the mating-type genes’ role in fruiting body development in M. sextelata may help to understand the life cycle and facilitate artificial cultivation.
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Affiliation(s)
- Qizheng Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (S.Q.)
| | - Shan Qu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (S.Q.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guoqiang He
- Beijing Agricultural Technology Extension Station, Beijing 100029, China; (G.H.); (J.W.)
| | - Jinkang Wei
- Beijing Agricultural Technology Extension Station, Beijing 100029, China; (G.H.); (J.W.)
| | - Caihong Dong
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (S.Q.)
- Correspondence:
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4
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Cao F, Zhang MK, Yang X, Xu CX, Cheng JT, Zhao QW, Wu R, Sheng R, Mao XM. A target and efficient synthetic strategy for structural and bioactivity optimization of a fungal natural product. Eur J Med Chem 2022; 229:114067. [PMID: 34973507 DOI: 10.1016/j.ejmech.2021.114067] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/29/2021] [Accepted: 12/19/2021] [Indexed: 02/08/2023]
Abstract
Drugs have been largely inspired from natural products, while enzymes underlying their biosynthesis have enabled complex structures and diverse bioactivities. Nevertheless, the high enzyme specificity and limited in vivo precursor types have restricted the natural product reservoir, but Nature has imprinted natural products with active sites, which can be readily modified by chemosynthesis with various functional groups for more favorable druggability. Here in the less exploited fungal natural products, we introduced CtvA, a polyketide synthase for a mycotoxin citreoviridin biosynthesis in Aspergillus, into an endophytic fungus Calcarisporium arbuscula to expand tetrahydrofuran (THF) into a dioxabicyclo-octane (DBO) ring moiety based on versatility and promiscuity of the aurovertin biosynthetic enzyme. Alternative acylations on the hydroxyl groups essential for cell toxicity by chemosynthesis produced compounds with improved anti-tumor activities and pharmacokinetics. Thus, we showed an effective strategic way to optimize the fungal natural product efficiently for more promising drug development.
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Affiliation(s)
- Fei Cao
- College of Pharmaceutical Sciences & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China
| | - Min-Kui Zhang
- College of Pharmaceutical Sciences & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Xi Yang
- Zhejiang University of Technology, Hangzhou, 310014, China
| | - Chu-Xuan Xu
- College of Pharmaceutical Sciences & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China
| | - Jin-Tao Cheng
- College of Pharmaceutical Sciences & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China
| | - Qing-Wei Zhao
- College of Pharmaceutical Sciences & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Rui Wu
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China
| | - Rong Sheng
- College of Pharmaceutical Sciences & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.
| | - Xu-Ming Mao
- College of Pharmaceutical Sciences & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China; Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China.
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5
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Liu Q, Xu Y, Zhang X, Li K, Li X, Wang F, Xu F, Dong C. Infection Process and Genome Assembly Provide Insights into the Pathogenic Mechanism of Destructive Mycoparasite Calcarisporium cordycipiticola with Host Specificity. J Fungi (Basel) 2021; 7:918. [PMID: 34829206 PMCID: PMC8620734 DOI: 10.3390/jof7110918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 11/21/2022] Open
Abstract
Calcarisporium cordycipiticola is the pathogen in the white mildew disease of Cordyceps militaris, one of the popular mushrooms. This disease frequently occurs and there is no effective method for disease prevention and control. In the present study, C. militaris is found to be the only host of C. cordycipiticola, indicating strict host specificity. The infection process was monitored by fluorescent labeling and scanning and transmission electron microscopes. C. cordycipiticola can invade into the gaps among hyphae of the fruiting bodies of the host and fill them gradually. It can degrade the hyphae of the host by both direct contact and noncontact. The parasitism is initially biotrophic, and then necrotrophic as mycoparasitic interaction progresses. The approximate chromosome-level genome assembly of C. cordycipiticola yielded an N50 length of 5.45 Mbp and a total size of 34.51 Mbp, encoding 10,443 proteins. Phylogenomic analysis revealed that C. cordycipiticola is phylogenetically close to its specific host, C. militaris. A comparative genomic analysis showed that the number of CAZymes of C. cordycipiticola was much less than in other mycoparasites, which might be attributed to its host specificity. Secondary metabolite cluster analysis disclosed the great biosynthetic capabilities and potential mycotoxin production capability. This study provides insights into the potential pathogenesis and interaction between mycoparasite and its host.
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Affiliation(s)
- Qing Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (Y.X.); (X.Z.); (K.L.); (X.L.); (F.W.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanyan Xu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (Y.X.); (X.Z.); (K.L.); (X.L.); (F.W.)
| | - Xiaoling Zhang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (Y.X.); (X.Z.); (K.L.); (X.L.); (F.W.)
| | - Kuan Li
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (Y.X.); (X.Z.); (K.L.); (X.L.); (F.W.)
| | - Xiao Li
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (Y.X.); (X.Z.); (K.L.); (X.L.); (F.W.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fen Wang
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (Y.X.); (X.Z.); (K.L.); (X.L.); (F.W.)
| | - Fangxu Xu
- Experimental Teaching Center, Shenyang Normal University, Shenyang 110034, China;
| | - Caihong Dong
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; (Q.L.); (Y.X.); (X.Z.); (K.L.); (X.L.); (F.W.)
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Cheng JT, Wang HM, Yu JH, Sun CF, Cao F, Jiang XH, Chen XA, Zhao QW, Gan LS, Xie RR, Wang SL, Li J, Zang Y, Mao XM. Discovery of a Potential Liver Fibrosis Inhibitor from a Mushroom Endophytic Fungus by Genome Mining of a Silent Biosynthetic Gene Cluster. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11303-11310. [PMID: 34542281 DOI: 10.1021/acs.jafc.1c03639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Liver fibrosis has accounted for liver diseases and overall mortality, but no relevant drug has been developed. Filamentous fungi are important resources of natural products for pharmaceutical development. Calcarisporium arbuscula is a mushroom endophytic fungus, which primarily produces aurovertins. Here, in an aurovertin null-production mutant, one silent gene cluster (mca17) was activated by overexpression of a pathway-specific zinc finger transcriptional regulator, and a tetramic acid-type compound (1, MCA17-1) was identified. Along with detailed structural characterization, its biosynthesis was proposed to be produced from the core PKS-NRPS hybrid enzyme. Moreover, 1 suppressed the activation of LX-2 upon transforming growth factor-β (TGF-β) challenge and had stronger bioactivity than the positive control obeticholic acid (OCA) against liver fibrosis. Our work suggested that this engineered fungus could be a producer of 1 for promising pharmaceutical development, and alternatively, it would be developed as a mushroom ingredient in dietary therapy to prevent liver fibrosis.
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Affiliation(s)
- Jin-Tao Cheng
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Han-Min Wang
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jia-Hui Yu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Chen-Fan Sun
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Fei Cao
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Xin-Hang Jiang
- Equipment and Technology Service Platform, College of Life Sciences, Zhejiang University, Hangzhou 310058, China
| | - Xin-Ai Chen
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
| | - Qing-Wei Zhao
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Li-She Gan
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, China
| | - Rong-Rong Xie
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Shi-Lei Wang
- Zhejiang Shuren University, Hangzhou 310058, China
| | - Jia Li
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi Zang
- National Center for Drug Screening, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xu-Ming Mao
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou 310058, China
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7
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Cheng JT, Yu JH, Sun CF, Cao F, Ying YM, Zhan ZJ, Li WJ, Chen XA, Zhao QW, Li YQ, Gan LS, Mao XM. A Cell Factory of a Fungicolous Fungus Calcarisporium arbuscula for Efficient Production of Natural Products. ACS Synth Biol 2021; 10:698-706. [PMID: 33720696 DOI: 10.1021/acssynbio.0c00371] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Fungal natural products are rich sources of clinical drugs. Particularly, the fungicolous fungi have a large number of biosynthetic gene clusters (BGCs) to produce numerous bioactive natural products, but most BGCs are silent in the laboratory. We have shown that a fungicolous fungus Calcarisporium arbuscula NRRL 3705 predominantly produces the highly reduced polyketide-type mycotoxins aurovertins. Here after evaluation of the aurovertin-null mutant ΔaurA as an efficient host, we further screened two strong promoters aurBp and A07068p based on RNA-Seq, and successfully activated an endogenous gene cluster from C. arbuscula as well as three additional exogenous BGCs from other fungi to produce polyketide-type natural products. Thus, we showed an efficient expression system from the fungicolous fungus C. arbuscula, which will be highly beneficial and complementary to the conventional Aspergillus and Penicillium fungal cell factories, and provides a useful toolkit for genome-wide mining of bioactive natural products from fungicolous fungi.
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Affiliation(s)
- Jin-Tao Cheng
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058, P. R. China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, P. R. China
| | - Jia-Hui Yu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Chen-Fan Sun
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058, P. R. China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, P. R. China
| | - Fei Cao
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058, P. R. China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, P. R. China
| | - You-Min Ying
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Zha-Jun Zhan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Wen-Ju Li
- Jinan Samuel Pharmaceutical Co., Ltd of Shandong Province, Jinan, 250100, P. R. China
| | - Xin-Ai Chen
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058, P. R. China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, P. R. China
| | - Qing-Wei Zhao
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Yong-Quan Li
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058, P. R. China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, P. R. China
| | - Li-She Gan
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Xu-Ming Mao
- Institute of Pharmaceutical Biotechnology & Research Center for Clinical Pharmacy, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058, P. R. China
- Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, P. R. China
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Cheng JT, Cao F, Chen XA, Li YQ, Mao XM. Genomic and transcriptomic survey of an endophytic fungus Calcarisporium arbuscula NRRL 3705 and potential overview of its secondary metabolites. BMC Genomics 2020; 21:424. [PMID: 32580753 PMCID: PMC7315530 DOI: 10.1186/s12864-020-06813-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 06/09/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Secondary metabolites as natural products from endophytic fungi are important sources of pharmaceuticals. However, there is currently little understanding of endophytic fungi at the omics levels about their potential in secondary metabolites. Calcarisporium arbuscula, an endophytic fungus from the fruit bodies of Russulaceae, produces a variety of secondary metabolites with anti-cancer, anti-nematode and antibiotic activities. A comprehensive survey of the genome and transcriptome of this endophytic fungus will help to understand its capacity to biosynthesize secondary metabolites and will lay the foundation for the development of this precious resource. RESULTS In this study, we reported the high-quality genome sequence of C. arbuscula NRRL 3705 based on Single Molecule Real-Time sequencing technology. The genome of this fungus is over 45 Mb in size, larger than other typical filamentous fungi, and comprises 10,001 predicted genes, encoding at least 762 secretory-proteins, 386 carbohydrate-active enzymes and 177 P450 enzymes. 398 virulence factors and 228 genes related to pathogen-host interactions were also predicted in this fungus. Moreover, 65 secondary metabolite biosynthetic gene clusters were revealed, including the gene cluster for the mycotoxin aurovertins. In addition, several gene clusters were predicted to produce mycotoxins, including aflatoxin, alternariol, destruxin, citrinin and isoflavipucine. Notably, two independent gene clusters were shown that are potentially involved in the biosynthesis of alternariol. Furthermore, RNA-Seq assays showed that only expression of the aurovertin gene cluster is much stronger than expression of the housekeeping genes under laboratory conditions, consistent with the observation that aurovertins are the predominant metabolites. Gene expression of the remaining 64 gene clusters for compound backbone biosynthesis was all lower than expression of the housekeeping genes, which partially explained poor production of other secondary metabolites in this fungus. CONCLUSIONS Our omics data, along with bioinformatics analysis, indicated that C. arbuscula NRRL 3705 contains a large number of biosynthetic gene clusters and has a huge potential to produce a profound number of secondary metabolites. This work also provides the basis for development of endophytic fungi as a new resource of natural products with promising biological activities.
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Affiliation(s)
- Jin-Tao Cheng
- Institute of Pharmaceutical Biotechnology, School of Medicine, Zhejiang University, Hangzhou, 310058, China.,Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China
| | - Fei Cao
- Institute of Pharmaceutical Biotechnology, School of Medicine, Zhejiang University, Hangzhou, 310058, China.,Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China
| | - Xin-Ai Chen
- Institute of Pharmaceutical Biotechnology, School of Medicine, Zhejiang University, Hangzhou, 310058, China.,Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China
| | - Yong-Quan Li
- Institute of Pharmaceutical Biotechnology, School of Medicine, Zhejiang University, Hangzhou, 310058, China. .,Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China.
| | - Xu-Ming Mao
- Institute of Pharmaceutical Biotechnology, School of Medicine, Zhejiang University, Hangzhou, 310058, China. .,Zhejiang Provincial Key Laboratory for Microbial Biochemistry and Metabolic Engineering, Hangzhou, 310058, China.
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9
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Strategies for gene disruption and expression in filamentous fungi. Appl Microbiol Biotechnol 2019; 103:6041-6059. [DOI: 10.1007/s00253-019-09953-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/24/2019] [Accepted: 05/28/2019] [Indexed: 02/02/2023]
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