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Zhang Y, Li Q, Zhang J, Chen M, Li X, Qiao Y, Wang K, Qi C, Zhang Y. Eurochevalierines A -I, Sesquiterpene Alkaloid Hybrids with Anti-Triple Negative Breast Cancer Activity from Penicillium sp. HZ-5. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 39016690 DOI: 10.1021/acs.jafc.4c04011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2024]
Abstract
Nine new sesquiterpene alkaloids, eurochevalierines A-I (1-9), were separated from the rice cultures of the endophytic fungus Penicillium sp. HZ-5 originated from the fresh leaf of Hypericum wilsonii N. Robson. The structures' illumination was conducted by single-crystal X-ray diffraction, extensive spectroscopic analysis, alkaline hydrolysis reaction, and Snatzke's method. Importantly, the antitumor activities screen of these isolates indicated that 1 could suppress triple negative breast cancer (TNBC) cell proliferation and induce apoptosis, with an IC50 value of 5.4 μM, which is comparable to the positive control docetaxel (DXT). Flow cytometry experiments mentioned that compound 1 significantly reduced mitochondrial membrane potential (MMP) of TNBC cells. In addition, 1 could activate caspase-3 and elevated the levels of reactive oxygen species (ROS) and expressions of suppressive cytokines and chemokines. Further Western blot analysis showed that 1 could selectively induce mitochondria-dependent apoptosis in TNBC cells via the BAX/BCL-2 pathway. Remarkably, these finding provide a new natural product skeleton for the treatment of TNBC.
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Affiliation(s)
- Yeting Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qing Li
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan 410078, China
- Department of Pathology, School of Basic, Medical Science, Central South University, Changsha, Hunan 410013, China
| | - Jinlong Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ming Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xuan Li
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yuben Qiao
- State Key Laboratory of Biocatalysis and Enzyme Engineering, School of Life Sciences, Hubei University, Wuhan 430062, China
| | - Kuansong Wang
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, Hunan 410078, China
- Department of Pathology, School of Basic, Medical Science, Central South University, Changsha, Hunan 410013, China
| | - Changxing Qi
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Key Laboratory of Organ Transplantation, Ministry of Education; NHC Key Laboratory of Organ Transplantation; Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan 430030, China
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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2
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Zhgun AA. Fungal BGCs for Production of Secondary Metabolites: Main Types, Central Roles in Strain Improvement, and Regulation According to the Piano Principle. Int J Mol Sci 2023; 24:11184. [PMID: 37446362 PMCID: PMC10342363 DOI: 10.3390/ijms241311184] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 07/15/2023] Open
Abstract
Filamentous fungi are one of the most important producers of secondary metabolites. Some of them can have a toxic effect on the human body, leading to diseases. On the other hand, they are widely used as pharmaceutically significant drugs, such as antibiotics, statins, and immunosuppressants. A single fungus species in response to various signals can produce 100 or more secondary metabolites. Such signaling is possible due to the coordinated regulation of several dozen biosynthetic gene clusters (BGCs), which are mosaically localized in different regions of fungal chromosomes. Their regulation includes several levels, from pathway-specific regulators, whose genes are localized inside BGCs, to global regulators of the cell (taking into account changes in pH, carbon consumption, etc.) and global regulators of secondary metabolism (affecting epigenetic changes driven by velvet family proteins, LaeA, etc.). In addition, various low-molecular-weight substances can have a mediating effect on such regulatory processes. This review is devoted to a critical analysis of the available data on the "turning on" and "off" of the biosynthesis of secondary metabolites in response to signals in filamentous fungi. To describe the ongoing processes, the model of "piano regulation" is proposed, whereby pressing a certain key (signal) leads to the extraction of a certain sound from the "musical instrument of the fungus cell", which is expressed in the production of a specific secondary metabolite.
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Affiliation(s)
- Alexander A Zhgun
- Group of Fungal Genetic Engineering, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Leninsky Prosp. 33-2, 119071 Moscow, Russia
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3
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Wang X, Jarmusch SA, Frisvad JC, Larsen TO. Current status of secondary metabolite pathways linked to their related biosynthetic gene clusters in Aspergillus section Nigri. Nat Prod Rep 2023; 40:237-274. [PMID: 35587705 DOI: 10.1039/d1np00074h] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Covering: up to the end of 2021Aspergilli are biosynthetically 'talented' micro-organisms and therefore the natural products community has continually been interested in the wealth of biosynthetic gene clusters (BGCs) encoding numerous secondary metabolites related to these fungi. With the rapid increase in sequenced fungal genomes combined with the continuous development of bioinformatics tools such as antiSMASH, linking new structures to unknown BGCs has become much easier when taking retro-biosynthetic considerations into account. On the other hand, in most cases it is not as straightforward to prove proposed biosynthetic pathways due to the lack of implemented genetic tools in a given fungal species. As a result, very few secondary metabolite biosynthetic pathways have been characterized even amongst some of the most well studied Aspergillus spp., section Nigri (black aspergilli). This review will cover all known biosynthetic compound families and their structural diversity known from black aspergilli. We have logically divided this into sub-sections describing major biosynthetic classes (polyketides, non-ribosomal peptides, terpenoids, meroterpenoids and hybrid biosynthesis). Importantly, we will focus the review on metabolites which have been firmly linked to their corresponding BGCs.
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Affiliation(s)
- Xinhui Wang
- DTU Bioengineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.
| | - Scott A Jarmusch
- DTU Bioengineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.
| | - Jens C Frisvad
- DTU Bioengineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.
| | - Thomas O Larsen
- DTU Bioengineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.
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4
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Hou A, Dickschat JS. Labelling studies in the biosynthesis of polyketides and non-ribosomal peptides. Nat Prod Rep 2023; 40:470-499. [PMID: 36484402 DOI: 10.1039/d2np00071g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Covering: 2015 to 2022In this review, we discuss the recent advances in the use of isotopically labelled compounds to investigate the biosynthesis of polyketides, non-ribosomally synthesised peptides, and their hybrids. Also, we highlight the use of isotopes in the elucidation of their structures and investigation of enzyme mechanisms. The biosynthetic pathways of selected examples are presented in detail to reveal the principles of the discussed labelling experiments. The presented examples demonstrate that the application of isotopically labelled compounds is still the state of the art and can provide valuable information for the biosynthesis of natural products.
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Affiliation(s)
- Anwei Hou
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, West 7th Avenue No. 32, 300308 Tianjin, China.,Institute of Microbiology, Jiangxi Academy of Sciences, Changdong Road No. 7777, 330096 Nanchang, China
| | - Jeroen S Dickschat
- Kekulé-Institute for Organic Chemistry and Biochemistry, University of Bonn, Gerhard-Domagk-Straße 1, 53121 Bonn, Germany.
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5
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Bai X, Sheng Y, Tang Z, Pan J, Wang S, Tang B, Zhou T, Shi L, Zhang H. Polyketides as Secondary Metabolites from the Genus Aspergillus. J Fungi (Basel) 2023; 9:261. [PMID: 36836375 PMCID: PMC9962652 DOI: 10.3390/jof9020261] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
Polyketides are an important class of structurally diverse natural products derived from a precursor molecule consisting of a chain of alternating ketone and methylene groups. These compounds have attracted the worldwide attention of pharmaceutical researchers since they are endowed with a wide array of biological properties. As one of the most common filamentous fungi in nature, Aspergillus spp. is well known as an excellent producer of polyketide compounds with therapeutic potential. By extensive literature search and data analysis, this review comprehensively summarizes Aspergillus-derived polyketides for the first time, regarding their occurrences, chemical structures and bioactivities as well as biosynthetic logics.
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Affiliation(s)
- Xuelian Bai
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Yue Sheng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Zhenxing Tang
- School of Culinary Arts, Tourism College of Zhejiang, Hangzhou 311231, China
| | - Jingyi Pan
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Shigui Wang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Bin Tang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Ting Zhou
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Lu’e Shi
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Huawei Zhang
- School of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China
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6
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Sun C, Tian W, Lin Z, Qu X. Biosynthesis of pyrroloindoline-containing natural products. Nat Prod Rep 2022; 39:1721-1765. [PMID: 35762180 DOI: 10.1039/d2np00030j] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Covering: up to 2022Pyrroloindoline is a privileged tricyclic indoline motif widely present in many biologically active and medicinally valuable natural products. Thus, understanding the biosynthesis of this molecule is critical for developing convenient synthetic routes, which is highly challenging for its chemical synthesis due to the presence of rich chiral centers in this molecule, especially the fully substituted chiral carbon center at the C3-position of its rigid tricyclic structure. In recent years, progress has been made in elucidating the biosynthetic pathways and enzymatic mechanisms of pyrroloindoline-containing natural products (PiNPs). This article reviews the main advances in the past few decades based on the different substitutions on the C3 position of PiNPs, especially the various key enzymatic mechanisms involved in the biosynthesis of different types of PiNPs.
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Affiliation(s)
- Chenghai Sun
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Wenya Tian
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Zhi Lin
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China. .,Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xudong Qu
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China. .,Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, China
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7
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Evaluation of Aspergillus aculeatus GC-09 for the biological control of citrus blue mold caused by Penicillium italicum. Fungal Biol 2022; 126:201-212. [DOI: 10.1016/j.funbio.2021.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 12/11/2021] [Accepted: 12/29/2021] [Indexed: 01/01/2023]
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8
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Han J, Jiang L, Zhang L, Quinn RJ, Liu X, Feng Y. Peculiarities of meroterpenoids and their bioproduction. Appl Microbiol Biotechnol 2021; 105:3987-4003. [PMID: 33937926 DOI: 10.1007/s00253-021-11312-z] [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] [Received: 02/07/2021] [Revised: 04/14/2021] [Accepted: 04/20/2021] [Indexed: 02/05/2023]
Abstract
Meroterpenoids are a class of terpenoid-containing hybrid natural products with impressive structural architectures and remarkable pharmacological activities. Remarkable advances in enzymology and synthetic biology have greatly contributed to the elucidation of the molecular basis for their biosynthesis. Here, we review structurally unique meroterpenoids catalyzed by novel enzymes and unusual enzymatic reactions over the period of last 5 years. We also discuss recent progress on the biomimetic synthesis of chrome meroterpenoids and synthetic biology-driven biomanufacturing of tropolone sesquiterpenoids, merochlorins, and plant-derived meroterpenoid cannabinoids. In particular, we focus on the novel enzymes involved in the biosynthesis of polyketide-terpenoids, nonribosomal peptide-terpenoids, terpenoid alkaloids, and meroterpenoid with unique structures. The biological activities of these meroterpenoids are also discussed. The information reviewed here might provide useful clues and lay the foundation for developing new meroterpenoid-derived drugs. KEY POINTS: • Meroterpenoids possess intriguing structural features and relevant biological activities. • Novel enzymes are involved in the biosynthesis of meroterpenoids with unique structures. • Biomimetic synthesis and synthetic biology enable the construction and manufacturing of complex meroterpenoids.
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Affiliation(s)
- Jianying Han
- Griffith Institute for Drug Discovery, Griffith University, QLD, Brisbane, 4111, Australia
| | - Lan Jiang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Lixin Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Ronald J Quinn
- Griffith Institute for Drug Discovery, Griffith University, QLD, Brisbane, 4111, Australia
| | - Xueting Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, China.
| | - Yunjiang Feng
- Griffith Institute for Drug Discovery, Griffith University, QLD, Brisbane, 4111, Australia.
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9
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Zhang X, Guo J, Cheng F, Li S. Cytochrome P450 enzymes in fungal natural product biosynthesis. Nat Prod Rep 2021; 38:1072-1099. [PMID: 33710221 DOI: 10.1039/d1np00004g] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Covering: 2015 to the end of 2020 Fungal-derived polyketides, non-ribosomal peptides, terpenoids and their hybrids contribute significantly to the chemical space of total natural products. Cytochrome P450 enzymes play essential roles in fungal natural product biosynthesis with their broad substrate scope, great catalytic versatility and high frequency of involvement. Due to the membrane-bound nature, the functional and mechanistic understandings for fungal P450s have been limited for quite a long time. However, recent technical advances, such as the efficient and precise genome editing techniques and the development of several filamentous fungal strains as heterologous P450 expression hosts, have led to remarkable achievements in fungal P450 studies. Here, we provide a comprehensive review to cover the most recent progresses from 2015 to 2020 on catalytic functions and mechanisms, research methodologies and remaining challenges in the fast-growing field of fungal natural product biosynthetic P450s.
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Affiliation(s)
- Xingwang Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China. and Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong 266237, China
| | - Jiawei Guo
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China.
| | - Fangyuan Cheng
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China.
| | - Shengying Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China. and Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong 266237, China
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10
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Niu G, Hao Y, Wang X, Gao JM, Li J. Fungal Metabolite Asperaculane B Inhibits Malaria Infection and Transmission. Molecules 2020; 25:E3018. [PMID: 32630339 PMCID: PMC7412362 DOI: 10.3390/molecules25133018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/28/2020] [Accepted: 06/29/2020] [Indexed: 11/16/2022] Open
Abstract
Mosquito-transmitted Plasmodium parasites cause millions of people worldwide to suffer malaria every year. Drug-resistant Plasmodium parasites and insecticide-resistant mosquitoes make malaria hard to control. Thus, the next generation of antimalarial drugs that inhibit malaria infection and transmission are needed. We screened our Global Fungal Extract Library (GFEL) and obtained a candidate that completely inhibited Plasmodium falciparum transmission to Anopheles gambiae. The candidate fungal strain was determined as Aspergillus aculeatus. The bioactive compound was purified and identified as asperaculane B. The concentration of 50% inhibition on P. falciparum transmission (IC50) is 7.89 µM. Notably, asperaculane B also inhibited the development of asexual P. falciparum with IC50 of 3 µM, and it is nontoxic to human cells. Therefore, asperaculane B is a new dual-functional antimalarial lead that has the potential to treat malaria and block malaria transmission.
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Affiliation(s)
- Guodong Niu
- Department of Biological Sciences, Biomolecular Sciences Institute, Florida International University, Miami, FL 33199, USA; (G.N.); (X.W.)
| | - Yue Hao
- College of Public Health, South China University, Hengyang, Hunan 421001, China;
| | - Xiaohong Wang
- Department of Biological Sciences, Biomolecular Sciences Institute, Florida International University, Miami, FL 33199, USA; (G.N.); (X.W.)
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products Chemical Biology, College of Science, Northwest A&F University, Yangling, Shaanxi 712100, China;
| | - Jun Li
- Department of Biological Sciences, Biomolecular Sciences Institute, Florida International University, Miami, FL 33199, USA; (G.N.); (X.W.)
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11
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Chen DL, Wang BW, Sun ZC, Yang JS, Xu XD, Ma GX. Natural Nitrogenous Sesquiterpenoids and Their Bioactivity: A Review. Molecules 2020; 25:E2485. [PMID: 32471218 PMCID: PMC7321145 DOI: 10.3390/molecules25112485] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 12/20/2022] Open
Abstract
Nitrogenous sesquiterpenoids fromnatural sourcesare rare, so unsurprisingly neither the potentially valuable bioactivity nor thebroad structural diversity of nitrogenous sesquiterpenoids has been reviewed before. This report covers the progressduring the decade from 2010 to February 2020 on the isolation, identification, and bioactivity of 391 nitrogen-containing natural sesquiterpenes from terrestrial plant, marine organisms, and microorganisms. This complete and in-depth reviewshouldbe helpful for discovering and developing new drugs of medicinal valuerelated to natural nitrogenous sesquiterpenoids.
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Affiliation(s)
- De-Li Chen
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151, Malianwa North Road, Haidian District, Beijing 100193, China; (D.-L.C.); (Z.-C.S.); (J.-S.Y.)
- Hainan Branch of Institute of Medicinal Plant Development, Chinese Academy of Medicinal Sciences & Peking Union Medical College (Hainan Provincial Key Laboratory of Resources Conservation and Development of Southern Medicine), Haikou 570311, China
| | - Bo-Wen Wang
- School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China;
| | - Zhao-Cui Sun
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151, Malianwa North Road, Haidian District, Beijing 100193, China; (D.-L.C.); (Z.-C.S.); (J.-S.Y.)
| | - Jun-Shan Yang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151, Malianwa North Road, Haidian District, Beijing 100193, China; (D.-L.C.); (Z.-C.S.); (J.-S.Y.)
| | - Xu-Dong Xu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151, Malianwa North Road, Haidian District, Beijing 100193, China; (D.-L.C.); (Z.-C.S.); (J.-S.Y.)
| | - Guo-Xu Ma
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, No. 151, Malianwa North Road, Haidian District, Beijing 100193, China; (D.-L.C.); (Z.-C.S.); (J.-S.Y.)
- Hainan Branch of Institute of Medicinal Plant Development, Chinese Academy of Medicinal Sciences & Peking Union Medical College (Hainan Provincial Key Laboratory of Resources Conservation and Development of Southern Medicine), Haikou 570311, China
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12
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Acurin A, a novel hybrid compound, biosynthesized by individually translated PKS- and NRPS-encoding genes in Aspergillus aculeatus. Fungal Genet Biol 2020; 139:103378. [PMID: 32234543 DOI: 10.1016/j.fgb.2020.103378] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/10/2020] [Accepted: 03/12/2020] [Indexed: 11/21/2022]
Abstract
This work presents the identification and proposed biosynthetic pathway for a compound of mixed polyketide-nonribosomal peptide origin that we named acurin A. The compound was isolated from an extract of the filamentous fungus Aspergillus aculeatus, and its core structure resemble that of the mycotoxin fusarin C produced by several Fusarium species. Based on bioinformatics in combination with RT-qPCR experiments and gene-deletion analysis, we identified a biosynthetic gene cluster (BGC) in A. aculeatus responsible for the biosynthesis of acurin A. Moreover, we were able to show that a polyketide synthase (PKS) and a nonribosomal peptide synthetase (NRPS) enzyme separately encoded by this BGC are responsible for the synthesis of the PK-NRP compound, acurin A, core structure. In comparison, the production of fusarin C is reported to be facilitated by a linked PKS-NRPS hybrid enzyme. Phylogenetic analyses suggest the PKS and NRPS in A. aculeatus resulted from a recent fission of an ancestral hybrid enzyme followed by gene duplication. In addition to the PKS- and NRPS-encoding genes of acurin A, we show that six other genes are influencing the biosynthesis including a regulatory transcription factor. Altogether, we have demonstrated the involvement of eight genes in the biosynthesis of acurin A, including an in-cluster transcription factor. This study highlights the biosynthetic capacity of A. aculeatus and serves as an example of how the CRISPR/Cas9 system can be exploited for the construction of fungal strains that can be readily engineered.
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13
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Lee C, Chen L, Chiang C, Lai C, Lin H. The Biosynthesis of Norsesquiterpene Aculenes Requires Three Cytochrome P450 Enzymes to Catalyze a Stepwise Demethylation Process. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910200] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chi‐Fang Lee
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
| | - Li‐Xun Chen
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
| | - Chen‐Yu Chiang
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
| | - Chen‐Yu Lai
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
| | - Hsiao‐Ching Lin
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
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14
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Lee C, Chen L, Chiang C, Lai C, Lin H. The Biosynthesis of Norsesquiterpene Aculenes Requires Three Cytochrome P450 Enzymes to Catalyze a Stepwise Demethylation Process. Angew Chem Int Ed Engl 2019; 58:18414-18418. [DOI: 10.1002/anie.201910200] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 10/10/2019] [Indexed: 11/05/2022]
Affiliation(s)
- Chi‐Fang Lee
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
| | - Li‐Xun Chen
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
| | - Chen‐Yu Chiang
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
| | - Chen‐Yu Lai
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
| | - Hsiao‐Ching Lin
- Institute of Biological ChemistryAcademia SinicaInstitute of Biochemical SciencesNational Taiwan University Taipei Taiwan R.O.C
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15
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Grijseels S, Pohl C, Nielsen JC, Wasil Z, Nygård Y, Nielsen J, Frisvad JC, Nielsen KF, Workman M, Larsen TO, Driessen AJM, Frandsen RJN. Identification of the decumbenone biosynthetic gene cluster in Penicillium decumbens and the importance for production of calbistrin. Fungal Biol Biotechnol 2018; 5:18. [PMID: 30598828 PMCID: PMC6299560 DOI: 10.1186/s40694-018-0063-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 12/04/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Filamentous fungi are important producers of secondary metabolites, low molecular weight molecules that often have bioactive properties. Calbistrin A is a secondary metabolite with an interesting structure that was recently found to have bioactivity against leukemia cells. It consists of two polyketides linked by an ester bond: a bicyclic decalin containing polyketide with structural similarities to lovastatin, and a linear 12 carbon dioic acid structure. Calbistrin A is known to be produced by several uniseriate black Aspergilli, Aspergillus versicolor-related species, and Penicillia. Penicillium decumbens produces calbistrin A and B as well as several putative intermediates of the calbistrin pathway, such as decumbenone A-B and versiol. RESULTS A comparative genomics study focused on the polyketide synthase (PKS) sets found in three full genome sequence calbistrin producing fungal species, P. decumbens, A. aculeatus and A. versicolor, resulted in the identification of a novel, putative 13-membered calbistrin producing gene cluster (calA to calM). Implementation of the CRISPR/Cas9 technology in P. decumbens allowed the targeted deletion of genes encoding a polyketide synthase (calA), a major facilitator pump (calB) and a binuclear zinc cluster transcription factor (calC). Detailed metabolic profiling, using UHPLC-MS, of the ∆calA (PKS) and ∆calC (TF) strains confirmed the suspected involvement in calbistrin productions as neither strains produced calbistrin nor any of the putative intermediates in the pathway. Similarly analysis of the excreted metabolites in the ∆calB (MFC-pump) strain showed that the encoded pump was required for efficient export of calbistrin A and B. CONCLUSION Here we report the discovery of a gene cluster (calA-M) involved in the biosynthesis of the polyketide calbistrin in P. decumbens. Targeted gene deletions proved the involvement of CalA (polyketide synthase) in the biosynthesis of calbistrin, CalB (major facilitator pump) for the export of calbistrin A and B and CalC for the transcriptional regulation of the cal-cluster. This study lays the foundation for further characterization of the calbistrin biosynthetic pathway in multiple species and the development of an efficient calbistrin producing cell factory.
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Affiliation(s)
- Sietske Grijseels
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Carsten Pohl
- Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Jens Christian Nielsen
- Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
| | - Zahida Wasil
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Yvonne Nygård
- Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, The Netherlands
| | - Jens Nielsen
- Department of Biology and Biological Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Jens C. Frisvad
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Kristian Fog Nielsen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Mhairi Workman
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Thomas Ostenfeld Larsen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Arnold J. M. Driessen
- Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, The Netherlands
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16
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González-Menéndez V, Crespo G, de Pedro N, Diaz C, Martín J, Serrano R, Mackenzie TA, Justicia C, González-Tejero MR, Casares M, Vicente F, Reyes F, Tormo JR, Genilloud O. Fungal endophytes from arid areas of Andalusia: high potential sources for antifungal and antitumoral agents. Sci Rep 2018; 8:9729. [PMID: 29950656 PMCID: PMC6021435 DOI: 10.1038/s41598-018-28192-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 06/19/2018] [Indexed: 01/05/2023] Open
Abstract
Native plant communities from arid areas present distinctive characteristics to survive in extreme conditions. The large number of poorly studied endemic plants represents a unique potential source for the discovery of novel fungal symbionts as well as host-specific endophytes not yet described. The addition of adsorptive polymeric resins in fungal fermentations has been seen to promote the production of new secondary metabolites and is a tool used consistently to generate new compounds with potential biological activities. A total of 349 fungal strains isolated from 63 selected plant species from arid ecosystems located in the southeast of the Iberian Peninsula, were characterized morphologically as well as based on their ITS/28S ribosomal gene sequences. The fungal community isolated was distributed among 19 orders including Basidiomycetes and Ascomycetes, being Pleosporales the most abundant order. In total, 107 different genera were identified being Neocamarosporium the genus most frequently isolated from these plants, followed by Preussia and Alternaria. Strains were grown in four different media in presence and absence of selected resins to promote chemical diversity generation of new secondary metabolites. Fermentation extracts were evaluated, looking for new antifungal activities against plant and human fungal pathogens, as well as, cytotoxic activities against the human liver cancer cell line HepG2. From the 349 isolates tested, 126 (36%) exhibited significant bioactivities including 58 strains with exclusive antifungal properties and 33 strains with exclusive activity against the HepG2 hepatocellular carcinoma cell line. After LCMS analysis, 68 known bioactive secondary metabolites could be identified as produced by 96 strains, and 12 likely unknown compounds were found in a subset of 14 fungal endophytes. The chemical profiles of the differential expression of induced activities were compared. As proof of concept, ten active secondary metabolites only produced in the presence of resins were purified and identified. The structures of three of these compounds were new and herein are elucidated.
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Affiliation(s)
| | - Gloria Crespo
- Fundación MEDINA, Avda. del conocimiento 34, 18016, Granada, Spain
| | - Nuria de Pedro
- Fundación MEDINA, Avda. del conocimiento 34, 18016, Granada, Spain
| | - Caridad Diaz
- Fundación MEDINA, Avda. del conocimiento 34, 18016, Granada, Spain
| | - Jesús Martín
- Fundación MEDINA, Avda. del conocimiento 34, 18016, Granada, Spain
| | - Rachel Serrano
- Fundación MEDINA, Avda. del conocimiento 34, 18016, Granada, Spain
| | | | - Carlos Justicia
- Fundación MEDINA, Avda. del conocimiento 34, 18016, Granada, Spain
| | - M Reyes González-Tejero
- Departamento de Botánica, Facultad de Farmacia, Universidad de Granada, C/ Prof. Clavera, s/n, 18011, Granada, Spain
| | - M Casares
- Departamento de Botánica, Facultad de Farmacia, Universidad de Granada, C/ Prof. Clavera, s/n, 18011, Granada, Spain
| | | | - Fernando Reyes
- Fundación MEDINA, Avda. del conocimiento 34, 18016, Granada, Spain
| | - José R Tormo
- Fundación MEDINA, Avda. del conocimiento 34, 18016, Granada, Spain
| | - Olga Genilloud
- Fundación MEDINA, Avda. del conocimiento 34, 18016, Granada, Spain
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17
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Robey MT, Ye R, Bok JW, Clevenger KD, Islam MN, Chen C, Gupta R, Swyers M, Wu E, Gao P, Thomas PM, Wu CC, Keller NP, Kelleher NL. Identification of the First Diketomorpholine Biosynthetic Pathway Using FAC-MS Technology. ACS Chem Biol 2018; 13:1142-1147. [PMID: 29631395 DOI: 10.1021/acschembio.8b00024] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Filamentous fungi are prolific producers of secondary metabolites with drug-like properties, and their genome sequences have revealed an untapped wealth of potential therapeutic leads. To better access these secondary metabolites and characterize their biosynthetic gene clusters, we applied a new platform for screening and heterologous expression of intact gene clusters that uses fungal artificial chromosomes and metabolomic scoring (FAC-MS). We leverage FAC-MS technology to identify the biosynthetic machinery responsible for production of acu-dioxomorpholine, a metabolite produced by the fungus, Aspergilllus aculeatus. The acu-dioxomorpholine nonribosomal peptide synthetase features a new type of condensation domain (designated CR) proposed to use a noncanonical arginine active site for ester bond formation. Using stable isotope labeling and MS, we determine that a phenyllactate monomer deriving from phenylalanine is incorporated into the diketomorpholine scaffold. Acu-dioxomorpholine is highly related to orphan inhibitors of P-glycoprotein targets in multidrug-resistant cancers, and identification of the biosynthetic pathway for this compound class enables genome mining for additional derivatives.
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Affiliation(s)
- Matthew T. Robey
- Department of Molecular Biosciences, Northwestern University, Evanston, Illinois 60208, United States
| | - Rosa Ye
- Intact
Genomics,
Inc., St Louis, Missouri 63132, United States
| | - Jin Woo Bok
- Department of Medical Microbiology and Immunology and Department of Bacteriology, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Kenneth D. Clevenger
- Proteomics Center of Excellence, Northwestern University, Evanston, Illinois 60208, United States
| | - Md Nurul Islam
- Intact
Genomics,
Inc., St Louis, Missouri 63132, United States
| | - Cynthia Chen
- Intact
Genomics,
Inc., St Louis, Missouri 63132, United States
| | - Raveena Gupta
- Department of Medical Microbiology and Immunology and Department of Bacteriology, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Michael Swyers
- Intact
Genomics,
Inc., St Louis, Missouri 63132, United States
| | - Edward Wu
- Intact
Genomics,
Inc., St Louis, Missouri 63132, United States
| | - Peng Gao
- Proteomics Center of Excellence, Northwestern University, Evanston, Illinois 60208, United States
| | - Paul M. Thomas
- Department of Molecular Biosciences, Northwestern University, Evanston, Illinois 60208, United States
- Proteomics Center of Excellence, Northwestern University, Evanston, Illinois 60208, United States
| | - Chengcang C. Wu
- Intact
Genomics,
Inc., St Louis, Missouri 63132, United States
| | - Nancy P. Keller
- Department of Medical Microbiology and Immunology and Department of Bacteriology, University of Wisconsin—Madison, Madison, Wisconsin 53706, United States
| | - Neil L. Kelleher
- Department of Molecular Biosciences, Northwestern University, Evanston, Illinois 60208, United States
- Proteomics Center of Excellence, Northwestern University, Evanston, Illinois 60208, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
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18
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Yodsing N, Lekphrom R, Sangsopha W, Aimi T, Boonlue S. Secondary Metabolites and Their Biological Activity from Aspergillus aculeatus KKU-CT2. Curr Microbiol 2017; 75:513-518. [PMID: 29248948 DOI: 10.1007/s00284-017-1411-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 11/29/2017] [Indexed: 12/22/2022]
Abstract
The bioactive compounds of the fungus Aspergillus aculeatus strain KKU-CT2, have been studied. The crude extracts from this fungus showed good antimicrobial activity against human pathogens, including Gram-positive and Gram-negative bacteria and yeast-like fungi. Its chemical components were isolated and purified by chromatographic methods. The structures of the secondary metabolites were elucidated by spectroscopic methods (IR, 1H, and 13C NMR). They were identified as ergosterol peroxide (1), secalonic acid D (2), secalonic acid F (3), variecolin (4), variecolactone (5), and ergosterol (6). Compounds 1 and 4-6 are reported for the first time as fungal metabolites from this species. Compound 1 displayed inhibitory effects on HSV-1 with an IC50 of 11.01 μg/ml. Compounds 3, 4, and 6 exhibited antimalarial activity against Plasmodium falciparum with IC50 of 1.03, 1.47, and 5.31 µg/ml, respectively. Additionally, all compounds from A. aculeatus KKU-CT2 showed unprecedented anticancer activities against human epidermoid carcinoma in the mouth (KB) (compounds 1-6), human breast cancer (MCF-7) (compounds 2, 4, and 5), and human lung cancer cells (NCI-H187) (compounds 1-4 and 6). These results suggest that secondary metabolites from A. aculeatus KKU-CT2 might be interesting for further derivatization, targeting diseases such as cancer.
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Affiliation(s)
- Natanong Yodsing
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.,Graduate School, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Ratsami Lekphrom
- Natural Products Research Unit, Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Watchara Sangsopha
- Natural Products Research Unit, Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Tadanori Aimi
- Faculty of Agriculture, Tottori University, 4-101 Koyama-cho Minami, Tottori, 680-8553, Japan
| | - Sophon Boonlue
- Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand.
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19
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Abstract
Natural products (NPs) have been used as traditional medicines since antiquity. With more than 1060 estimated compounds with molecular weights less than 500 Da representing chemical space, NPs occupy a very small percentage; however, they are significantly overrepresented in biologically relevant chemical space. The classical approach concentrates on identifying one or more NPs with biological activity from a source organism. There is much more to be learned from NPs than we can discover this narrow view. In this review, we discuss ways to harness the global properties of NPs.
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Affiliation(s)
- Asmaa Boufridi
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Queensland 4111, Australia; ,
| | - Ronald J Quinn
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Queensland 4111, Australia; ,
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20
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Singh G, Katoch A, Razak M, Kitchlu S, Goswami A, Katoch M. Bioactive and biocontrol potential of endophytic fungi associated with Brugmansia aurea Lagerh. FEMS Microbiol Lett 2017; 364:4157277. [DOI: 10.1093/femsle/fnx194] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 09/11/2017] [Indexed: 12/11/2022] Open
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21
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Does Osmotic Stress Affect Natural Product Expression in Fungi? Mar Drugs 2017; 15:md15080254. [PMID: 28805714 PMCID: PMC5577608 DOI: 10.3390/md15080254] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/27/2017] [Accepted: 08/08/2017] [Indexed: 11/16/2022] Open
Abstract
The discovery of new natural products from fungi isolated from the marine environment has increased dramatically over the last few decades, leading to the identification of over 1000 new metabolites. However, most of the reported marine-derived species appear to be terrestrial in origin yet at the same time, facultatively halo- or osmotolerant. An unanswered question regarding the apparent chemical productivity of marine-derived fungi is whether the common practice of fermenting strains in seawater contributes to enhanced secondary metabolism? To answer this question, a terrestrial isolate of Aspergillus aculeatus was fermented in osmotic and saline stress conditions in parallel across multiple sites. The ex-type strain of A. aculeatus was obtained from three different culture collections. Site-to-site variations in metabolite expression were observed, suggesting that subculturing of the same strain and subtle variations in experimental protocols can have pronounced effects upon metabolite expression. Replicated experiments at individual sites indicated that secondary metabolite production was divergent between osmotic and saline treatments. Titers of some metabolites increased or decreased in response to increasing osmolite (salt or glycerol) concentrations. Furthermore, in some cases, the expression of some secondary metabolites in relation to osmotic and saline stress was attributed to specific sources of the ex-type strains.
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22
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Aspergillus labruscus sp. nov., a new species of Aspergillus section Nigri discovered in Brazil. Sci Rep 2017; 7:6203. [PMID: 28740180 PMCID: PMC5524721 DOI: 10.1038/s41598-017-06589-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 06/22/2017] [Indexed: 11/08/2022] Open
Abstract
A novel fungal species, Aspergillus labruscus sp. nov., has been found in Brazil during an investigation of the fungal species present on the surface of grape berries (Vitis labrusca L.) for use in the production of concentrated grape juice. It seems to be associated to V. labrusca, and has never been recovered from Vitis vinifera. This new species belonging to Aspergillus subgenus Circumdati section Nigri is described here using morphological characters, extrolite profiling, partial sequence data from the BenA and CaM genes, and internal transcribed spacer sequences of ribosomal DNA. Phenotypic and molecular data enabled this novel species to be clearly distinguished from other black aspergilli. A. labruscus sp. nov. is uniseriate, has yellow mycelium, poor sporulation on CYA at 25 °C, abundant salmon to pink sclerotia and rough conidia. Neoxaline and secalonic acid D were consistently produced by isolates in this taxon. The type strain of A. labruscus sp. nov. is CCT 7800 (T) = ITAL 22.223 (T) = IBT 33586 (T).
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23
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Lai CY, Lo IW, Hewage RT, Chen YC, Chen CT, Lee CF, Lin S, Tang MC, Lin HC. Biosynthesis of Complex Indole Alkaloids: Elucidation of the Concise Pathway of Okaramines. Angew Chem Int Ed Engl 2017. [PMID: 28631282 DOI: 10.1002/anie.201705501] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The okaramines are a class of complex indole alkaloids isolated from Penicillium and Aspergillus species. Their potent insecticidal activity arises from selectively activating glutamate-gated chloride channels (GluCls) in invertebrates, not affecting human ligand-gated anion channels. Okaramines B (1) and D (2) contain a polycyclic skeleton, including an azocine ring and an unprecedented 2-dimethyl-3-methyl-azetidine ring. Owing to their complex scaffold, okaramines have inspired many total synthesis efforts, but the enzymology of the okaramine biosynthetic pathway remains unexplored. Here, we identified and characterized the biosynthetic gene cluster (oka) of 1 and 2, then elucidated the pathway with target gene inactivation, heterologous reconstitution, and biochemical characterization. Notably, we characterized an α-ketoglutarate-dependent non-heme FeII dioxygenase that forged the azetidine ring on the okaramine skeleton.
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Affiliation(s)
- Chen-Yu Lai
- Institute of Biological Chemistry, Academia Sinica, Taipei115, Taiwan R.O.C
| | - I-Wen Lo
- Institute of Biological Chemistry, Academia Sinica, Taipei115, Taiwan R.O.C
| | - Ranuka T Hewage
- Institute of Biological Chemistry, Academia Sinica, Taipei115, Taiwan R.O.C
| | - Yi-Chen Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei115, Taiwan R.O.C
| | - Chien-Ting Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei115, Taiwan R.O.C
| | - Chi-Fang Lee
- Institute of Biological Chemistry, Academia Sinica, Taipei115, Taiwan R.O.C
| | - Steven Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei115, Taiwan R.O.C
| | - Man-Cheng Tang
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Hsiao-Ching Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei115, Taiwan R.O.C
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24
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Lai CY, Lo IW, Hewage RT, Chen YC, Chen CT, Lee CF, Lin S, Tang MC, Lin HC. Biosynthesis of Complex Indole Alkaloids: Elucidation of the Concise Pathway of Okaramines. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705501] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Chen-Yu Lai
- Institute of Biological Chemistry; Academia Sinica; Taipei115 Taiwan R.O.C
| | - I-Wen Lo
- Institute of Biological Chemistry; Academia Sinica; Taipei115 Taiwan R.O.C
| | - Ranuka T. Hewage
- Institute of Biological Chemistry; Academia Sinica; Taipei115 Taiwan R.O.C
| | - Yi-Chen Chen
- Institute of Biological Chemistry; Academia Sinica; Taipei115 Taiwan R.O.C
| | - Chien-Ting Chen
- Institute of Biological Chemistry; Academia Sinica; Taipei115 Taiwan R.O.C
| | - Chi-Fang Lee
- Institute of Biological Chemistry; Academia Sinica; Taipei115 Taiwan R.O.C
| | - Steven Lin
- Institute of Biological Chemistry; Academia Sinica; Taipei115 Taiwan R.O.C
| | - Man-Cheng Tang
- Department of Chemical and Biomolecular Engineering; University of California, Los Angeles; Los Angeles CA 90095 USA
| | - Hsiao-Ching Lin
- Institute of Biological Chemistry; Academia Sinica; Taipei115 Taiwan R.O.C
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25
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Metabolites with Gram-negative bacteria quorum sensing inhibitory activity from the marine animal endogenic fungus Penicillium sp. SCS-KFD08. Arch Pharm Res 2016; 40:25-31. [DOI: 10.1007/s12272-016-0844-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/28/2016] [Indexed: 12/30/2022]
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26
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Mendes G, Gonçalves VN, Souza-Fagundes EM, Kohlhoff M, Rosa CA, Zani CL, Cota BB, Rosa LH, Johann S. Antifungal activity of extracts from Atacama Desert fungi against Paracoccidioides brasiliensis and identification of Aspergillus felis as a promising source of natural bioactive compounds. Mem Inst Oswaldo Cruz 2016; 111:209-17. [PMID: 27008375 PMCID: PMC4804504 DOI: 10.1590/0074-02760150451] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 02/15/2016] [Indexed: 12/15/2022] Open
Abstract
Fungi of the genus Paracoccidioides are responsible for
paracoccidioidomycosis. The occurrence of drug toxicity and relapse in this disease
justify the development of new antifungal agents. Compounds extracted from fungal
extract have showing antifungal activity. Extracts of 78 fungi isolated from rocks of
the Atacama Desert were tested in a microdilution assay against
Paracoccidioides brasiliensis Pb18. Approximately 18% (5) of the
extracts showed minimum inhibitory concentration (MIC) values≤ 125.0
µg/mL. Among these, extract from the fungus UFMGCB 8030 demonstrated the best
results, with an MIC of 15.6 µg/mL. This isolate was identified as
Aspergillus felis (by macro and micromorphologies, and internal
transcribed spacer, β-tubulin, and ribosomal polymerase II gene analyses) and was
grown in five different culture media and extracted with various solvents to optimise
its antifungal activity. Potato dextrose agar culture and dichloromethane extraction
resulted in an MIC of 1.9 µg/mL against P. brasiliensis and did not
show cytotoxicity at the concentrations tested in normal mammalian cell (Vero). This
extract was subjected to bioassay-guided fractionation using analytical
C18RP-high-performance liquid chromatography (HPLC) and an antifungal assay using
P. brasiliensis. Analysis of the active fractions by HPLC-high
resolution mass spectrometry allowed us to identify the antifungal agents present in
the A. felis extracts cytochalasins. These results reveal the
potential of A. felis as a producer of bioactive compounds with
antifungal activity.
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Affiliation(s)
- Graziele Mendes
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Vívian N Gonçalves
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Elaine M Souza-Fagundes
- Departamento de Fisiologia e Biofísica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Markus Kohlhoff
- Laboratório de Química de Produtos Naturais, Centro de Pesquisa René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brasil
| | - Carlos A Rosa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Carlos L Zani
- Laboratório de Química de Produtos Naturais, Centro de Pesquisa René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brasil
| | - Betania B Cota
- Laboratório de Química de Produtos Naturais, Centro de Pesquisa René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brasil
| | - Luiz H Rosa
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Susana Johann
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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27
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Henke MT, Kelleher NL. Modern mass spectrometry for synthetic biology and structure-based discovery of natural products. Nat Prod Rep 2016; 33:942-50. [PMID: 27376415 PMCID: PMC4981503 DOI: 10.1039/c6np00024j] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Covering: up to 2016In this highlight, we describe the current landscape for dereplication and discovery of natural products based on the measurement of the intact mass by LC-MS. Often it is assumed that because better mass accuracy (provided by higher resolution mass spectrometers) is necessary for absolute chemical formula determination (≤1 part-per-million), that it is also necessary for dereplication of natural products. However, the average ability to dereplicate tapers off at ∼10 ppm, with modest improvement gained from better mass accuracy when querying focused databases of natural products. We also highlight some recent examples of how these platforms are applied to synthetic biology, and recent methods for dereplication and correlation of substructures using tandem MS data. We also offer this highlight to serve as a brief primer for those entering the field of mass spectrometry-based natural products discovery.
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Affiliation(s)
- Matthew T Henke
- Department of Molecular Biosciences, Northwestern University, Evanston, IL 60208, USA.
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28
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de Medeiros LS, da Silva JV, Abreu LM, Pfenning LH, Silva CL, Thomasi SS, Venâncio T, van Pée KH, Nielsen KF, Rodrigues-Filho E. Dichlorinated and Brominated Rugulovasines, Ergot Alkaloids Produced by Talaromyces wortmannii. Molecules 2015; 20:17627-44. [PMID: 26404231 PMCID: PMC6332237 DOI: 10.3390/molecules200917627] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 09/17/2015] [Accepted: 09/21/2015] [Indexed: 01/08/2023] Open
Abstract
UHPLC-DAD-HRMS based dereplication guided the detection of new halogenated alkaloids co-produced by Talaromyces wortmannii. From the fungal growth in large scale, the epimers 2,8-dichlororugulovasines A and B were purified and further identified by means of a HPLC-SPE/NMR hyphenated system. Brominated rugulovasines were also detected when the microbial incubation medium was supplemented with bromine sources. Studies from 1D/2D NMR and HRMS spectroscopy data allowed the structural elucidation of the dichlorinated compounds, while tandem MS/HRMS data analysis supported the rationalization of brominated congeners. Preliminary genetic studies revealed evidence that FADH2 dependent halogenase can be involved in the biosynthesis of the produced halocompounds.
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Affiliation(s)
- Lívia Soman de Medeiros
- Department of Systems Biology, Technical University of Denmark, Søltofts Plads, Building 221, Kgs. Lyngby DK-2800, Denmark.
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luís, Km 265, São Carlos 13565-905, Brazil.
| | - José Vinícius da Silva
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luís, Km 265, São Carlos 13565-905, Brazil.
| | - Lucas Magalhães Abreu
- Department of Systems Biology, Technical University of Denmark, Søltofts Plads, Building 221, Kgs. Lyngby DK-2800, Denmark.
- Department of Phytopathology, Federal University of Lavras, P. O. Box 3037, Lavras 37200-000, Brazil.
| | - Ludwig Heinrich Pfenning
- Department of Phytopathology, Federal University of Lavras, P. O. Box 3037, Lavras 37200-000, Brazil.
| | - Carolina Lúcia Silva
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luís, Km 265, São Carlos 13565-905, Brazil.
| | - Sérgio Secherrer Thomasi
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luís, Km 265, São Carlos 13565-905, Brazil.
| | - Tiago Venâncio
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luís, Km 265, São Carlos 13565-905, Brazil.
| | - Karl-Heinz van Pée
- Allgemeine Biochemie, Technical University of Dresden, Bergstraβe 66, Dresden 01062, Germany.
| | - Kristian Fog Nielsen
- Department of Systems Biology, Technical University of Denmark, Søltofts Plads, Building 221, Kgs. Lyngby DK-2800, Denmark.
| | - Edson Rodrigues-Filho
- Department of Chemistry, Federal University of São Carlos, Rod. Washington Luís, Km 265, São Carlos 13565-905, Brazil.
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Petersen LM, Holm DK, Gotfredsen CH, Mortensen UH, Larsen TO. Investigation of a 6-MSA Synthase Gene Cluster inAspergillus aculeatusReveals 6-MSA-derived Aculinic Acid, Aculins A-B and Epi-Aculin A. Chembiochem 2015; 16:2200-4. [DOI: 10.1002/cbic.201500210] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Lene M. Petersen
- Natural Product Discovery; Eukaryotic Biotechnology; Department of Systems Biology; Technical University of Denmark; Søltofts Plads Building 221 2800 Kgs. Lyngby Denmark
| | - Dorte K. Holm
- Eukaryotic Molecular Cell Biology Group; Eukaryotic Biotechnology; Department of Systems Biology; Technical University of Denmark; Søltofts Plads Building 223 2800 Kgs. Lyngby Denmark
| | - Charlotte H. Gotfredsen
- Department of Chemistry; Technical University of Denmark; Kemitorvet Building 201 2800 Kgs. Lyngby Denmark
| | - Uffe H. Mortensen
- Eukaryotic Molecular Cell Biology Group; Eukaryotic Biotechnology; Department of Systems Biology; Technical University of Denmark; Søltofts Plads Building 223 2800 Kgs. Lyngby Denmark
| | - Thomas O. Larsen
- Natural Product Discovery; Eukaryotic Biotechnology; Department of Systems Biology; Technical University of Denmark; Søltofts Plads Building 221 2800 Kgs. Lyngby Denmark
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30
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Induced sclerotium formation exposes new bioactive metabolites from Aspergillus sclerotiicarbonarius. J Antibiot (Tokyo) 2015; 68:603-8. [DOI: 10.1038/ja.2015.40] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/09/2015] [Accepted: 03/16/2015] [Indexed: 01/06/2023]
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31
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Petersen LM, Kildgaard S, Jaspars M, Larsen TO. Aspiperidine oxide, a piperidine N-oxide from the filamentous fungus Aspergillus indologenus. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.02.082] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Calvo AM, Cary JW. Association of fungal secondary metabolism and sclerotial biology. Front Microbiol 2015; 6:62. [PMID: 25762985 PMCID: PMC4329819 DOI: 10.3389/fmicb.2015.00062] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 01/18/2015] [Indexed: 11/13/2022] Open
Abstract
Fungal secondary metabolism and morphological development have been shown to be intimately associated at the genetic level. Much of the literature has focused on the co-regulation of secondary metabolite production (e.g., sterigmatocystin and aflatoxin in Aspergillus nidulans and Aspergillus flavus, respectively) with conidiation or formation of sexual fruiting bodies. However, many of these genetic links also control sclerotial production. Sclerotia are resistant structures produced by a number of fungal genera. They also represent the principal source of primary inoculum for some phytopathogenic fungi. In nature, higher plants often concentrate secondary metabolites in reproductive structures as a means of defense against herbivores and insects. By analogy, fungi also sequester a number of secondary metabolites in sclerotia that act as a chemical defense system against fungivorous predators. These include antiinsectant compounds such as tetramic acids, indole diterpenoids, pyridones, and diketopiperazines. This chapter will focus on the molecular mechanisms governing production of secondary metabolites and the role they play in sclerotial development and fungal ecology, with particular emphasis on Aspergillus species. The global regulatory proteins VeA and LaeA, components of the velvet nuclear protein complex, serve as virulence factors and control both development and secondary metabolite production in many Aspergillus species. We will discuss a number of VeA- and LaeA-regulated secondary metabolic gene clusters in A. flavus that are postulated to be involved in sclerotial morphogenesis and chemical defense. The presence of multiple regulatory factors that control secondary metabolism and sclerotial formation suggests that fungi have evolved these complex regulatory mechanisms as a means to rapidly adapt chemical responses to protect sclerotia from predators, competitors and other environmental stressors.
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Affiliation(s)
- Ana M Calvo
- Department of Biological Sciences, Northern Illinois University DeKalb, IL, USA
| | - Jeffrey W Cary
- Southern Regional Research Center, United States Department of Agriculture - Agricultural Research Service New Orleans, LA, USA
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Gao YQ, Guo CJ, Zhang Q, Zhou WM, Wang CCC, Gao JM. Asperaculanes A and B, two sesquiterpenoids from the fungus Aspergillus aculeatus. Molecules 2014; 20:325-34. [PMID: 25547729 PMCID: PMC6272214 DOI: 10.3390/molecules20010325] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 12/02/2014] [Indexed: 11/16/2022] Open
Abstract
Six sesquiterpenoids 1-6, including two new ones, an ent-daucane-type sesquiterpenoid, asperaculane A (1), and a nordaucane one, asperaculane B (2), and four known nordaucane derivatives, aculenes A-D 3-6, together with the known secalonic acid D (7), were isolated from a fermentation culture of the fungus Aspergillus aculeatus. Their structures and absolute configurations were established by analyses of their spectroscopic data, including 1D and 2D-NMR spectra, HR-ESIMS, electronic circular dichroism (ECD) data, and quantum chemical calculations. These metabolites were evaluated for in vitro cytotoxic activity against two cell lines, human cancer cell lines (HeLa) and one normal hamster cell line (CHO).
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Affiliation(s)
- Yu-Qi Gao
- Shaanxi Key Laboratory of Natural Products Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Chun-Jun Guo
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA.
| | - Qiang Zhang
- Shaanxi Key Laboratory of Natural Products Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Wen-Ming Zhou
- Shaanxi Key Laboratory of Natural Products Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Clay C C Wang
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA 90089, USA.
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, Shaanxi, China.
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