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Zhang J, Gao L, Lin H, Liang Y, You M, Ding L, Feng F, Yang B, Liu Y. Discovery of Antibacterial Compounds against Xanthomonas citri subsp. citri from a Marine Fungus Aspergillus terreus SCSIO 41202 and the Mode of Action. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:12596-12606. [PMID: 38771666 DOI: 10.1021/acs.jafc.4c02769] [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: 05/23/2024]
Abstract
Citrus canker, caused by Xanthomonas citri subsp. citri (Xcc), is a severe citrus disease. Currently, copper-containing pesticides are widely used to manage this disease, posing high risks to the environment and human health. This study reports the discovery of naturally occurring anti-Xcc compounds from a deep-sea fungus, Aspergillus terreus SCSIO 41202, and the possible mode of action. The ethyl acetate extract of A. terreus was subjected to bioassay-guided isolation, resulting in the discovery of eight anti-Xcc compounds (1-8) with minimum inhibitory concentrations (MICs) ranging from 0.078 to 0.625 mg/mL. The chemical structures of these eight metabolites were determined by integrative analysis of various spectroscopic data. Among these compounds, Asperporonin A (1) and Asperporonin B (2) were identified as novel compounds with a very unusual structural skeleton. The electronic circular dichroism was used to determine the absolute configurations of 1 and 2 through quantum chemical calculation. A bioconversion pathway involving pinacol rearrangement was proposed to produce the unusual compounds (1-2). Compound 6 exhibited an excellent anti-Xcc effect with a MIC value of 0.078 mg/mL, which was significantly more potent than the positive control CuSO4 (MIC = 0.3125 mg/mL). Compound 6 inhibited cell growth by disrupting biofilm formation, destroying the cell membrane, and inducing the accumulation of reactive oxygen species. In vivo tests indicated that compound 6 is highly effective in controlling citrus canker disease. These results indicate that compounds 1-8, especially 6, have the potential as lead compounds for the development of new, environmentally friendly, and efficient anti-Xcc pesticides.
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Affiliation(s)
- Jun Zhang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Liangliang Gao
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Huiting Lin
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Yan Liang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Mingnan You
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou 341000, China
| | - Lijian Ding
- Department of Marine Pharmacy, Ningbo University, Ningbo 315211, China
| | - Fangjian Feng
- Department of Marine Pharmacy, Ningbo University, Ningbo 315211, China
| | - Bin Yang
- Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510000, P. R. China
| | - Yonghong Liu
- Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510000, P. R. China
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2
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Yu X, Müller WEG, Frank M, Gao Y, Guo Z, Zou K, Proksch P, Liu Z. Caryophyllene-type sesquiterpenes from the endophytic fungus Pestalotiopsis lespedezae through an OSMAC approach. Front Microbiol 2024; 14:1248896. [PMID: 38274753 PMCID: PMC10808731 DOI: 10.3389/fmicb.2023.1248896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 12/19/2023] [Indexed: 01/27/2024] Open
Abstract
Two new caryophyllene-type sesquiterpenes pestalotiopsins U and V (1 and 2) and three known compounds pestalotiopsin B (7), pestaloporinate B (8), and pestalotiopsin C (9) were isolated by the cultivation of the endophytic fungus Pestalotiopsis lespedezae on solid rice medium, while four additional new caryophyllene pestalotiopsins W-Z (3-6) were obtained when 3.5% NaI was added to the fungal culture medium. The structures of the new compounds were determined by HRESIMS and 1D/2D nuclear magnetic resonance data. Compounds 1-9 were tested for cytotoxicity against the mouse lymphoma cell line L5178Y, but only 6 displayed significant activity with an IC50 value of 2.4 μM.
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Affiliation(s)
- Xiaoqin Yu
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, China
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Duesseldorf, Duesseldorf, Germany
| | - Werner E. G. Müller
- Institute of Physiological Chemistry, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Mainz, Germany
| | - Marian Frank
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Duesseldorf, Duesseldorf, Germany
| | - Ying Gao
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Duesseldorf, Duesseldorf, Germany
| | - Zhiyong Guo
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, China
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, China
| | - Peter Proksch
- Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, China
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University Duesseldorf, Duesseldorf, Germany
| | - Zhen Liu
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, China
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Jiang P, Fu X, Niu H, Chen S, Liu F, Luo Y, Zhang D, Lei H. Recent advances on Pestalotiopsis genus: chemistry, biological activities, structure-activity relationship, and biosynthesis. Arch Pharm Res 2023:10.1007/s12272-023-01453-2. [PMID: 37389739 DOI: 10.1007/s12272-023-01453-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 06/21/2023] [Indexed: 07/01/2023]
Abstract
Strains of the fungal genus Pestalotiopsis are reported as large promising sources of structurally varied biologically active metabolites. Many bioactive secondary metabolites with diverse structural features have been derived from Pestalotiopsis. Moreover, some of these compounds can potentially be developed into lead compounds. Herein, we have systematically reviewed the chemical constituents and bioactivities of the fungal genus Pestalotiopsis, covering a period ranging from January 2016 to December 2022. As many as 307 compounds, including terpenoids, coumarins, lactones, polyketides, and alkaloids, were isolated during this period. Furthermore, for the benefit of readers, the biosynthesis and potential medicinal value of these new compounds are also discussed in this review. Finally, the perspectives and directions for future research and the potential applications of the new compounds are summarized in various tables.
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Affiliation(s)
- Peng Jiang
- Key Laboratory of Tropical Marine Bioresources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, China
| | - Xiujuan Fu
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Hong Niu
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Siwei Chen
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Feifei Liu
- School of Life Sciences, Jiangsu Normal University, Xuzhou, 221116, Jiangsu, China
| | - Yu Luo
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China
| | - Dan Zhang
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China.
| | - Hui Lei
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, Sichuan, China.
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Morehouse NJ, Clark TN, Kerr RG, Johnson JA, Gray CA. Caryophyllene Sesquiterpenes from a Chaetomium globosum Endophyte of the Canadian Medicinal Plant Empetrum nigrum. JOURNAL OF NATURAL PRODUCTS 2023; 86:1615-1619. [PMID: 37267043 DOI: 10.1021/acs.jnatprod.2c01159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Punctaporonins T (1) and U (2), new caryophyllene sesquiterpenes, were isolated with three known punctaporonins, A (3), B (4), and C (5), from the endophytic fungus Chaetomium globosum (TC2-041). The structures and relative configurations of punctaporonins T and U were elucidated based on a combination of HRESIMS, 1D/2D NMR spectroscopic analysis, and X-ray diffraction analysis, while their absolute configuration is presumed to be consistent with the co-isolated 3-5 on biogenetic arguments. Compound 1 showed weak inhibitory activity against both Mycobacterium tuberculosis and Staphylococcus aureus.
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Affiliation(s)
- Nicholas J Morehouse
- Department of Biological Sciences, University of New Brunswick, 100 Tucker Park Road, Saint John, NB E2L 4L5, Canada
| | - Trevor N Clark
- Department of Biological Sciences, University of New Brunswick, 100 Tucker Park Road, Saint John, NB E2L 4L5, Canada
| | - Russell G Kerr
- Nautilus Biosciences Canada Inc., 550 University Avenue, Charlottetown, PE C1A 4P3, Canada
- Department of Chemistry, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada
- Department of Biomedical Sciences, Atlantic Veterinary College, 550 University Avenue, Charlottetown, PE C1A 4P3, Canada
| | - John A Johnson
- Department of Biological Sciences, University of New Brunswick, 100 Tucker Park Road, Saint John, NB E2L 4L5, Canada
| | - Christopher A Gray
- Department of Biological Sciences, University of New Brunswick, 100 Tucker Park Road, Saint John, NB E2L 4L5, Canada
- Department of Chemistry, University of New Brunswick, 30 Dineen Drive, Fredericton, NB E3B 5A3, Canada
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Kang X, Yang W, Zheng Y, Zheng M, Xiao Y, Wang J, Zhu H, Li Q, Chen C, Zhang Y. Caryophyllene sesquiterpenoids with various ring systems from the fungus Pestalotiopsis chamaeropis. PHYTOCHEMISTRY 2023; 207:113569. [PMID: 36566821 DOI: 10.1016/j.phytochem.2022.113569] [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] [Received: 09/30/2022] [Revised: 12/05/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Six undescribed caryophyllene sesquiterpenoids named pestalotiopsins O-T, along with eight known analogues, were obtained from the fungus Pestalotiopsis chamaeropis. Their structures and absolute configurations were assigned by NMR spectroscopic analyses, HRESIMS, single-crystal X-ray diffraction, electronic circular dichroism (ECD) calculations, Mo2(OAc)4-induced ECD, and chemical derivatization. Pestalotiopsin P represents the first example of a caryophyllene sesquiterpenoid possessing an oxatricyclo [7.2.2.03.6]tridecane decorated with a rare bridgehead double bond, while pestalotiopsin Q has an oxatricyclic [6.3.1.01,4]dodecane skeleton with an unusual ether bridge between C-1 and C-5. These undescribed caryophyllene sesquiterpenoids were screened for their cytotoxic and anti-inflammatory activities.
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Affiliation(s)
- Xin Kang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Wanqi Yang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Yuyi Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Meijia Zheng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Yang Xiao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Jianping Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Hucheng Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Qin Li
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
| | - Chunmei Chen
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China.
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Mulyani Y, Sinaga SE, Supratman U. Phytochemistry and Biological Activities of Endophytic Fungi from the Meliaceae Family. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020778. [PMID: 36677833 PMCID: PMC9863112 DOI: 10.3390/molecules28020778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/28/2022] [Accepted: 01/10/2023] [Indexed: 01/15/2023]
Abstract
Meliaceae plants are found worldwide in tropical or subtropical climates. They are important ethnobotanically as sources of traditional medicine, with 575 species and 51 genera. Previous research found that microorganisms are plant pioneers to produce secondary metabolites with diverse compound structures and bioactivities. Several plants of the Meliaceae family contain secondary metabolites isolated from endophytic fungi. Furthermore, related articles from 2002 to 2022 were collected from SciFinder, Google Scholar, and PubMed. About 276 compounds were isolated from endophytic fungi such as terpenoids, polyketides, lactones, pyrones, quinone, anthraquinones, xanthones, coumarines, isocoumarines, resorcylic acid lactones, cytochalasins, aromatics, ester, quinols, alkaloids, nitro compound, fatty acids, and sugars with bioactivities such as antioxidant, antibacterial, antifungal, anti-influenza, neuroprotective activities, anti-HIV, cytotoxic, allelopathic, anti-inflammatory, antifeedant effects, and BSLT toxicity. Meanwhile, secondary metabolites isolated from endophytic fungi were reported as one of the sources of active compounds for medicinal chemistry. This comprehensive review summarizes the ethnobotanical uses and secondary metabolites derived from Meliaceae endophytic fungi.
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Affiliation(s)
- Yeni Mulyani
- Department of Chemistry, Faculty of Mathematic and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Department of Marine Science, Faculty of Fisheries and Marine Science, Universitas Padjadjaran, Sumedang 45363, Indonesia
| | | | - Unang Supratman
- Department of Chemistry, Faculty of Mathematic and Natural Sciences, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Central Laboratory, Universitas Padjadjaran, Sumedang 45363, Indonesia
- Correspondence: ; Tel.: +62-22-779-4391
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7
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Pestalotiopsis Diversity: Species, Dispositions, Secondary Metabolites, and Bioactivities. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27228088. [PMID: 36432188 PMCID: PMC9695833 DOI: 10.3390/molecules27228088] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/23/2022] [Accepted: 10/29/2022] [Indexed: 11/23/2022]
Abstract
Pestalotiopsis species have gained attention thanks to their structurally complex and biologically active secondary metabolites. In past decades, several new secondary metabolites were isolated and identified. Their bioactivities were tested, including anticancer, antifungal, antibacterial, and nematicidal activity. Since the previous review published in 2014, new secondary metabolites were isolated and identified from Pestalotiopsis species and unidentified strains. This review gathered published articles from 2014 to 2021 and focused on 239 new secondary metabolites and their bioactivities. To date, 384 Pestalotiopsis species have been discovered in diverse ecological habitats, with the majority of them unstudied. Some may contain secondary metabolites with unique bioactivities that might benefit pharmacology.
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8
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Amirzakariya BZ, Shakeri A. Bioactive terpenoids derived from plant endophytic fungi: An updated review (2011-2020). PHYTOCHEMISTRY 2022; 197:113130. [PMID: 35183568 DOI: 10.1016/j.phytochem.2022.113130] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 01/17/2022] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
Plant endophytes have been considered as novel sources of naturally occurring compounds with various biological activities, including cytotoxic, antimicrobial, anti-inflammatory, anticancer, herbicides, antileishmanial and antioxidant. A variety of specialised products, comprising terpenoids, alkaloids, polyketides, phenolic compounds, coumarins, and quinone derivatives have been reported from various strains. An increasing number of products, especially terpenoids, are being isolated from endophytes. Herein, the isolated new terpenoids from plant endophytic fungi, their hosts, as well as biological activities, from January 2011 until the end of 2020 are reviewed. In this period, 516 terpenoids are classified into monoterpenes (5), sesquiterpenes (299), diterpenes (76), sesterterpens (22), meroterpenes (83), triterpenes (29), and other terpenoids (2), were isolated from different plant endophytic fungi species.
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Affiliation(s)
| | - Abolfazl Shakeri
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Liu G, Huo R, Zhai Y, Liu L. New Bioactive Sesquiterpeniods From the Plant Endophytic Fungus Pestalotiopsis theae. Front Microbiol 2021; 12:641504. [PMID: 33868199 PMCID: PMC8044550 DOI: 10.3389/fmicb.2021.641504] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/09/2021] [Indexed: 12/03/2022] Open
Abstract
Three new secondary metabolites pestalothenins A-C (1-3), including two new humulane-derived sesquiterpeniods (1 and 2) and one new caryophyllene-derived sesquiterpeniod (3), together with five known compounds (4-8) were isolated from the crude extract of the plant endophytic fungus Pestalotiopsis theae (N635). Their structures were elucidated by the extensive analyses of HRESIMS and NMR spectroscopic data. The absolute configurations of 1-3 were determined by comparison of experimental and calculated electronic circular dichroism (ECD) spectra. The cytotoxic effects of these compounds were evaluated in vitro. Compound 6 showed moderate cytotoxicity against T24 and MCF7 cell lines. In addition, compounds 1-8 were also evaluated for antibacterial activity.
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Affiliation(s)
- Gaoran Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Ruiyun Huo
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yanan Zhai
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Ling Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
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Guo LF, Liu GR, Liu L. Caryophyllene-type sesquiterpenoids and α-furanones from the plant endophytic fungus Pestalotiopsis theae. Chin J Nat Med 2021; 18:261-267. [PMID: 32402402 DOI: 10.1016/s1875-5364(20)30032-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Indexed: 02/07/2023]
Abstract
Two new caryophyllene-type sesquiterpenoids, pestathenols A (1) and B (2) and one new α-furanone, pestatheranone A (6), along with five known compounds (3-5, 7 and 8) have been isolated from the crude extract of the plant endophytic fungus Pestalotiopsis theae. Their structures were unambiguously established by extensive spectroscopic analyses. The absolute configuration of the 5,6-diol moiety in 1 was assigned using Snatzke's method. Compounds 1 and 2 showed weak cytotoxicity against HeLa cell line.
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Affiliation(s)
- Long-Fang Guo
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Gao-Ran Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Ling Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.
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Zhang Y, Bai J, Yan D, Liu B, Zhang L, Zhang C, Chen M, Mou Y, Hu Y. Highly Oxygenated Caryophyllene-Type Sesquiterpenes from a Plant-Associated Fungus, Pestalotiopsis hainanensis, and Their Biosynthetic Gene Cluster. JOURNAL OF NATURAL PRODUCTS 2020; 83:3262-3269. [PMID: 33064488 DOI: 10.1021/acs.jnatprod.0c00501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Seven new β-caryophyllene derivatives, pestalotiphains A-G (1-7), along with six known analogues (8-13), were isolated from the plant-associated Pestalotiopsis hainanensis. Compound 1 represents the first example of a caryophyllene-adenine hybrid, and 2 contains a novel oxatricyclo[4.3.1.0] system. Their structures and absolute configurations were assigned by interpretation of a combination of spectroscopic data and electronic circular dichroism calculations. Compound 8 exhibited moderate inhibition of HL-60 and THP-1 cell lines (IC50, 6.2 and 2.0 μM, respectively). A candidate biosynthetic gene cluster responsible for these compounds was uncovered by bioinformatics analyses and confirmed by a biochemical approach.
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Affiliation(s)
| | | | | | | | | | | | - Minghua Chen
- Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, People's Republic of China
| | - Yanhua Mou
- School of Life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 117004, People's Republic of China
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Pal PP, Shaik AB, Begum AS. Prospective Leads from Endophytic Fungi for Anti-Inflammatory Drug Discovery. PLANTA MEDICA 2020; 86:941-959. [PMID: 32334437 DOI: 10.1055/a-1140-8388] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A wide array of therapeutic effects has been exhibited by compounds isolated from natural sources. "Bio-actives of endophytic origin" is a recently explored area that came into recognition over the last 2 decades. Literature search on the secondary metabolites of endophytes have shown several pharmacologically active compounds especially anti-inflammatory compounds, which have been reviewed in the present paper. The article is structured based on the chemical classification of secondary metabolites. The compounds were identified to possess activity against a total of 16 anti-inflammatory targets. The most common targets involved were NO, TNF-α, and inhibition of total ROS. Further, the article gives a detailed insight into the compounds, their endophytic source, and anti-inflammatory target as well as potency. The contents of the article cover all the scientific reports published until Feb. 2019. Thus 118 compounds and 6 extracts have been reported to be obtained from endophytic sources showing anti-inflammatory activities. Amongst these, herbarin, periconianone A, and periconianone B were identified as the most potent compounds in terms of their IC50 values against NO inhibition.
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Affiliation(s)
- Pragya Paramita Pal
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad, Telangana State, India
| | - Ameer Basha Shaik
- Department of Plant Pathology, Professor Jeyashanker Telangana State Agricultural University, Rajendra Nagar, Hyderabad, Telangana State, India
| | - A Sajeli Begum
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad, Telangana State, India
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Toghueo RMK. Anti-leishmanial and Anti-inflammatory Agents from Endophytes: A Review. NATURAL PRODUCTS AND BIOPROSPECTING 2019; 9:311-328. [PMID: 31564050 PMCID: PMC6814666 DOI: 10.1007/s13659-019-00220-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 09/23/2019] [Indexed: 05/05/2023]
Abstract
Leishmaniases and chronic inflammatory diseases are the cause of millions of deaths in the world each year. The treatment of leishmaniasis is facing serious drawbacks particularly due to the limited number of effective medicines, the resistance, and the toxicity of available drugs. On the other hand, many drugs are used for the management of inflammatory disorders. However, the most commonly prescribed although efficient is highly toxic with multiples side effects. New leads compounds for the development of new anti-leishmanial and anti-inflammatory drugs are needed. Over the past decade, several studies on the potential of endophytes to produce bioactive metabolites have been reported. We are presenting in the present review the status of research from 2000 to 2019 on the anti-leishmanial and anti-inflammatory metabolites isolated from endophytes from diverse habitats. An emphasis was put on existing gaps in the literature to inspire and guide future investigations. We hope that this review will help accelerate the drug discovery against leishmaniases and inflammation-associated disorders.
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Affiliation(s)
- Rufin Marie Kouipou Toghueo
- Antimicrobial and Biocontrol Agents Unit (AmBcAU), Laboratory for Phytobiochemistry and Medicinal Plants Studies, Department of Biochemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon.
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Caryophyllene sesquiterpenes, chromones and 10-membered macrolides from the marine-derived fungus Pseudopestalotiopsis sp. PSU-AMF45. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130530] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Rao L, You YX, Su Y, Liu Y, He Q, Fan Y, Hu F, Xu YK, Zhang CR. Two spiroketal derivatives with an unprecedented amino group and their cytotoxicity evaluation from the endophytic fungus Pestalotiopsis flavidula. Fitoterapia 2019; 135:5-8. [PMID: 30914329 DOI: 10.1016/j.fitote.2019.03.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 03/18/2019] [Accepted: 03/22/2019] [Indexed: 12/17/2022]
Abstract
Two new spiroketal derivatives with an unprecedented amino group, 2'-aminodechloromaldoxin (1) and 2'-aminodechlorogeodoxin (2), along with one known analogue dechloromaldoxin (3), were isolated from the plant endophytic fungus Pestalotiopsis flavidula. Their structures were elucidated on the basis of extensive spectroscopic analysis. The purification was cytotoxicity-guided which indicated the extract, fractions and compounds were evaluated in vitro for anti-proliferative activity against a panel of human cancer cell lines. The results showed compounds 1 and 2 with moderate cytotoxicity while 3 was inactive, which suggested -NH2 group might play a very important role for their cytotoxicity. This is the first study for P. flavidula and the first time to report the spiroketal derivatives as alkaloids from the Pestalotiopsis genus.
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Affiliation(s)
- Li Rao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, and Tumour Targeted Therapy and Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yun-Xia You
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, and Tumour Targeted Therapy and Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yu Su
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, and Tumour Targeted Therapy and Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yu Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, and Tumour Targeted Therapy and Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Qian He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, and Tumour Targeted Therapy and Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Yue Fan
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, and Tumour Targeted Therapy and Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Feng Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, and Tumour Targeted Therapy and Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - You-Kai Xu
- Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, Yunnan 666303, China
| | - Chuan-Rui Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, and Tumour Targeted Therapy and Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China.
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16
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Xu X, Liu C, Dong YJ, Liu FR, Xu XM, Li DS, Li DY, Li ZL. Polyketides from Pestalotiopsis zonata and structure revision of pestalrones A and B. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2019; 21:134-140. [PMID: 29168395 DOI: 10.1080/10286020.2017.1395858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 10/19/2017] [Indexed: 06/07/2023]
Abstract
The structures of pestalrones A-B were revised via reinterpretation of the NMR data and a brief chemical transformation from the co-occurring polyketides, in our investigation on the secondary metabolites of Pestalotiopsis zonata, which also afforded a new α-pyrone derivative, pestazonatic acid, and four known analogs.
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Affiliation(s)
- Xin Xu
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Chang Liu
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Ya-Jing Dong
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Fang-Ru Liu
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Xiu-Mei Xu
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - De-Sheng Li
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Dan-Yi Li
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Zhan-Lin Li
- a Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
- b School of Traditional Chinese Materia Medica , Shenyang Pharmaceutical University , Shenyang 110016 , China
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17
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Lee JY, Kim GJ, Choi JK, Choi YA, Jeong NH, Park PH, Choi H, Kim SH. 4-(Hydroxymethyl)catechol Extracted From Fungi in Marine Sponges Attenuates Rheumatoid Arthritis by Inhibiting PI3K/Akt/NF-κB Signaling. Front Pharmacol 2018; 9:726. [PMID: 30079020 PMCID: PMC6062625 DOI: 10.3389/fphar.2018.00726] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 06/15/2018] [Indexed: 12/18/2022] Open
Abstract
Rheumatoid arthritis (RA) is a progressive autoimmune disease specific to synovial joints; it causes joint damage and other systemic abnormalities, thereby leading to physical disability and early mortality. Marine sponge-derived fungi, Pestalotiopsis sp., secrete immunosuppressive compounds in the culture broth. In the present study, we isolated 4-(hydroxymethyl)catechol (4-HMC) from these fungal species, and evaluated its anti-RA effects using a murine collagen-induced arthritis model and tumor necrosis factor-α-stimulated human RA synovial fibroblasts. Oral 4-HMC administration decreased the clinical arthritis score, paw thickness, histologic and radiologic changes, and serum IgG1 and IgG2a levels. It prevented the proliferation of helper T (Th) 1/Th17 CD4+ lymphocytes isolated from inguinal lymph nodes, thereby reducing inflammatory cytokine production in CIA mice. It decreased the expression of inflammatory mediators, including cytokines and matrix metalloproteinases (MMPs), both in vitro and in vivo. We observed that 4-HMC suppresses Th immune responses and MMP expression to inhibit inflammatory cytokine production in human RA synovial fibroblasts by modulating the PI3K/Akt/NF-κB pathway. These results verify the anti-RA potential of 4-HMC.
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Affiliation(s)
- Jong Y Lee
- Department of Pharmacology, School of Medicine, CMRI, Kyungpook National University, Daegu, South Korea
| | - Geum J Kim
- College of Pharmacy, Yeungnam University, Gyeongsan, South Korea
| | - Jin K Choi
- Department of Pharmacology, School of Medicine, CMRI, Kyungpook National University, Daegu, South Korea.,Molecular Immunology Section, Laboratory of Immunology, National Eye Institute, National Institutes of Health, Bethesda, MD, United States
| | - Young-Ae Choi
- Department of Pharmacology, School of Medicine, CMRI, Kyungpook National University, Daegu, South Korea
| | - Na-Hee Jeong
- Department of Pharmacology, School of Medicine, CMRI, Kyungpook National University, Daegu, South Korea
| | - Pil-Hoon Park
- College of Pharmacy, Yeungnam University, Gyeongsan, South Korea
| | - Hyukjae Choi
- College of Pharmacy, Yeungnam University, Gyeongsan, South Korea
| | - Sang-Hyun Kim
- Department of Pharmacology, School of Medicine, CMRI, Kyungpook National University, Daegu, South Korea
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18
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The Chemical Composition and Functional Properties of Essential Oils from Four Species of Schisandra Growing Wild in the Qinling Mountains, China. Molecules 2018; 23:molecules23071645. [PMID: 29976902 PMCID: PMC6100523 DOI: 10.3390/molecules23071645] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 06/23/2018] [Accepted: 06/30/2018] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to investigate the chemical composition and functional properties of the essential oils from the plants Schisandra grandiflora (Wall.) Hook. f. et Thoms, Schisandra rubriflora (Franch). Rehd. et Wils., Schisandra sphenanthera Rehd. et Wils., and Schisandra propinqua (Wall.) Baill var. sinensis Oliv. collected in the Qinling Mountains. Under the optimum conditions of the ultrasonic-assisted extraction method, the extraction yields were 7.51% (S. grandiflora), 6.91% (S. rubriflora), 6.11% (S. sphenanthera), and 5.88% (S. propinqua). A total of 86 components were identified from four species of Schisandra and 16 components were shared among the essential oils of all samples with different contents. However, some components were identified only in a certain plant, for example, β-caryophyllen (S. grandiflora), α-bulnesene (S. rubriflora), and α-Chamigrene (S. propinqua). Terpenoids (sesquiterpenes and oxygenated sesquiterpenes), accounting for 73.87–82.08% of the total compounds, were the main components. Meanwhile, the antioxidant activities of the essential oils were evaluated through three free radical scavenging assays and a reducing power assay, which were related to the contents of the individual bioactive composition. These results provide a phytochemical foundation for the use of four species, and for the further study of the identification of Schisandra species.
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Zhang Q, Luan R, Li H, Liu Y, Liu P, Wang L, Li D, Wang M, Zou Q, Liu H, Matsuzaki K, Zhao F. Anti-inflammatory action of ambuic acid, a natural product isolated from the solid culture of Pestalotiopsis neglecta, through blocking ERK/JNK mitogen-activated protein kinase signaling pathway. Exp Ther Med 2018; 16:1538-1546. [PMID: 30116402 DOI: 10.3892/etm.2018.6294] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 04/24/2018] [Indexed: 02/03/2023] Open
Abstract
Ambuic acid is an organic acid isolated from the solid culture of Pestalotiopsis neglecta, which is an endophytic fungus that widely exists in many species of plants. Ambuic acid has been reported to exert antimicrobial activity against Gram-positive bacterium. The aim of the present study was to investigate the inhibitory effect of ambuic acid on lipopolysaccharide (LPS)-induced inflammation in RAW264.7 macrophages. The results demonstrated that ambuic acid significantly suppressed the overproduction of nitric oxide (NO) and prostaglandin E2 (PGE2) in a dose-dependent manner. Furthermore, ambuic acid also inhibited the release of the proinflammatory cytokine interleukin-6 (IL-6) however, no inhibition of the release of tumor necrosis factor-α (TNF-α) was observed. Further investigations indicated that ambuic acid downregulated the LPS-induced high expression of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2) proteins, as well as inhibited the enzymatic activity of iNOS and COX-2. In addition, ambuic acid suppressed the phosphorylation of extracellular signal-regulated kinase 1/2 (ERK 1/2) and c-Jun N-terminal kinase (JNK) induced by LPS. However, ambuic acid did not inhibit the phosphorylation of p38 mitogen-activated protein kinase (MAPK), the degradation of IκB-α protein or the nuclear translocation of nuclear transcription factor-κB (NF-κB) p65 subunit. These results suggested that ambuic acid may exert anti-inflammatory action by blocking the activation of the ERK/JNK MAPK signaling pathway, without the involvement of the p38 MAPK or NF-κB signaling pathways.
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Affiliation(s)
- Qian Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264003, P.R. China
| | - Ruiling Luan
- Pharmacy Dispensing Center, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong 264000, P.R. China
| | - Huixiang Li
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264003, P.R. China
| | - Yanan Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264003, P.R. China
| | - Pan Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264003, P.R. China
| | - Liying Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264003, P.R. China
| | - Danna Li
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264003, P.R. China
| | - Mengdi Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264003, P.R. China
| | - Qiang Zou
- Yantai Branch of Shandong Technology Transfer Center, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China
| | - Hongwei Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, P.R. China
| | - Keiichi Matsuzaki
- School of Pharmacy, Nihon University, Funabashi, Chiba 274-8555, Japan
| | - Feng Zhao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai, Shandong 264003, P.R. China
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20
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Song RY, Wang XB, Yin GP, Liu RH, Kong LY, Yang MH. Isocoumarin derivatives from the endophytic fungus, Pestalotiopsis sp. Fitoterapia 2017; 122:115-118. [DOI: 10.1016/j.fitote.2017.08.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 08/19/2017] [Accepted: 08/21/2017] [Indexed: 10/19/2022]
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21
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Antimicrobial metabolites from the plant endophytic fungus Penicillium sp. Fitoterapia 2016; 116:72-76. [PMID: 27876600 DOI: 10.1016/j.fitote.2016.11.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/09/2016] [Accepted: 11/10/2016] [Indexed: 01/09/2023]
Abstract
Five rare dichloro aromatic polyketides (1-5) were obtained from an endophytic fungus Penicillium sp., along with five known metabolites (6-10). Their structures were elucidated by extensive spectroscopic analysis, Mosher methods, as well as [Rh2(OCOCF3)4]-induced electronic circular dichroism (ECD) experiments. Compounds 2-4 and 6 structurally involved acyclic 1.3-diols, the uneasy configuration determinations of which were well carried out by double-derivation NMR methods. Compounds 1-10 were evaluated for their antibacterial and antifungal activities against five strains of human pathogenic microorganisms. Helvolic acid (7) showed potent inhibitory effects against Staphylococcus aureus and Pseudomonas aeruginosa with MIC (minimum inhibitory concentration) values of 5.8 and 4.6μg/mL, respectively.
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22
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Zhang N, Zhang C, Xiao X, Zhang Q, Huang B. New cytotoxic compounds of endophytic fungus Alternaria sp. isolated from Broussonetia papyrifera (L.) Vent. Fitoterapia 2016; 110:173-80. [PMID: 27001249 DOI: 10.1016/j.fitote.2016.03.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 03/14/2016] [Accepted: 03/15/2016] [Indexed: 12/30/2022]
Abstract
From the ethyl acetate extract of a culture of the endophytic fungus Alternaria species G7 in Broussonetia papyrifera, a new compound altertoxin IV (1) together with nine known compounds were isolated and identified by means of bioassay-guided fractionation. The structures of these compounds were established on the basis of spectroscopic methods, among which the absolute configuration of compound 1, a new tetrahydroperylenone derivative, was determined by means of X-Ray Crystallographic analysis. The isolated compounds were subjected to cytotoxic activity against three human cancer cell lines (A549, MG-63, and SMMC-7721). Compound 2 showed significant cytotoxic activities against tested cell lines, with IC50 values of 1.47, 2.11 and 7.34 μg/mL, respectively. Additionally, compound 4 also exhibited significant cytotoxic activities against cell lines MG-63 and SMMC-7721, with IC50 values of 0.53 and 2.92 μg/mL. Endophytic fungi Alternaria from B. papyrifera might be promising sources of natural bioactive and novel metabolites.
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Affiliation(s)
- Naidan Zhang
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Chunyan Zhang
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Xiao Xiao
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Qiaoyan Zhang
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China
| | - Baokang Huang
- Department of Pharmacognosy, School of Pharmacy, Second Military Medical University, Shanghai 200433, PR China.
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