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Wang Y, Cao G, Gan Y, Lin X, Yi X, Zhao L, Liu Y, Gao C, Bai M. New Cyclic Pentapeptides from the Mangrove-Derived Aspergillus fumigatus GXIMD 03099. Mar Drugs 2024; 22:282. [PMID: 38921593 PMCID: PMC11204760 DOI: 10.3390/md22060282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 06/14/2024] [Accepted: 06/14/2024] [Indexed: 06/27/2024] Open
Abstract
Four new cyclic pentapeptides, avellanins D-G (1-4), together with four known compounds (5-8), were isolated from a mangrove-derived Aspergillus fumigatus GXIMD 03099 fungus from Acanthus ilicifolius L. Their structures were elucidated by analysis of HRESIMS, NMR, and ESI-MS/MS data. Their absolute configurations were determined by X-ray diffraction analysis and Marfey's method. Compounds 1-8 were screened for insecticidal and antibacterial activities. Compound 2 showed insecticidal activity against newly hatched larvae of Culex quinquefasciatus with an LC50 value of 86.6 µM; compound 4 had weak activity against Vibrio harveyi with an MIC value of 5.85 µM.
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Affiliation(s)
- Yu Wang
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; (Y.W.); (G.C.); (Y.G.); (X.L.); (X.Y.); (L.Z.); (Y.L.)
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Guangping Cao
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; (Y.W.); (G.C.); (Y.G.); (X.L.); (X.Y.); (L.Z.); (Y.L.)
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Yuman Gan
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; (Y.W.); (G.C.); (Y.G.); (X.L.); (X.Y.); (L.Z.); (Y.L.)
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Xiao Lin
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; (Y.W.); (G.C.); (Y.G.); (X.L.); (X.Y.); (L.Z.); (Y.L.)
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Xiangxi Yi
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; (Y.W.); (G.C.); (Y.G.); (X.L.); (X.Y.); (L.Z.); (Y.L.)
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Longyan Zhao
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; (Y.W.); (G.C.); (Y.G.); (X.L.); (X.Y.); (L.Z.); (Y.L.)
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Yonghong Liu
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; (Y.W.); (G.C.); (Y.G.); (X.L.); (X.Y.); (L.Z.); (Y.L.)
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Chenghai Gao
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; (Y.W.); (G.C.); (Y.G.); (X.L.); (X.Y.); (L.Z.); (Y.L.)
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Meng Bai
- Guangxi Key Laboratory of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China; (Y.W.); (G.C.); (Y.G.); (X.L.); (X.Y.); (L.Z.); (Y.L.)
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning 530200, China
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Li L, Zhong W, Liu H, Espinosa-Artiles P, Xu YM, Wang C, Robles JMV, Paz TA, Inácio MC, Chen F, Xu Y, Gunatilaka AAL, Molnár I. Biosynthesis of Cytosporones in Leotiomycetous Filamentous Fungi. J Am Chem Soc 2024; 146:6189-6198. [PMID: 38386630 PMCID: PMC11106036 DOI: 10.1021/jacs.3c14066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
Polyketides with the isochroman-3-one pharmacophore are rare among fungal natural products as their biosynthesis requires an unorthodox S-type aromatic ring cyclization. Genome mining uncovered a conserved gene cluster in select leotiomycetous fungi that encodes the biosynthesis of cytosporones, including isochroman-3-one congeners. Combinatorial biosynthesis in total biosynthetic and biocatalytic formats in Saccharomyces cerevisiae and in vitro reconstitution of key reactions with purified enzymes revealed how cytosporone structural and bioactivity diversity is generated. The S-type acyl dihydroxyphenylacetic acid (ADA) core of cytosporones is assembled by a collaborating polyketide synthase pair. Thioesterase domain-catalyzed transesterification releases ADA esters, some of which are known Nur77 modulators. Alternatively, hydrolytic release allows C6 hydroxylation by a flavin-dependent monooxygenase, yielding a trihydroxybenzene moiety. Reduction of the C9 carbonyl by a short chain dehydrogenase/reductase initiates isochroman-3-one formation, affording cytosporones with cytotoxic and antimicrobial activity. Enoyl di- or trihydroxyphenylacetic acids are generated as shunt products, while isocroman-3,4-diones are formed by autoxidation. The cytosporone pathway offers novel polyketide biosynthetic enzymes for combinatorial synthetic biology to advance the production of "unnatural" natural products for drug discovery.
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Affiliation(s)
- Li Li
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
- College of Life Science, Yangtze University, Jingzhou 434025, P. R. China
| | - Weimao Zhong
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
| | - Hang Liu
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China
| | - Patricia Espinosa-Artiles
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
| | - Ya-ming Xu
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
| | - Chen Wang
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China
| | - Jose Manuel Verdugo Robles
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
| | - Tiago Antunes Paz
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-903, Brazil
| | - Marielle Cascaes Inácio
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
| | - Fusheng Chen
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, P. R. China
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, P. R. China
| | - Yuquan Xu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China
| | - A. A. Leslie Gunatilaka
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
| | - István Molnár
- Southwest Center for Natural Products Research, University of Arizona, Tucson 85719, Arizona, United States
- VTT Technical Research Center of Finland Ltd., Espoo 02150, Finland
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Wang G, Yuan Y, Li Z, Zhu J, She Z, Chen Y. Cytosporones with Anti-Inflammatory Activities from the Mangrove Endophytic Fungus Phomopsis sp. QYM-13. Mar Drugs 2023; 21:631. [PMID: 38132952 PMCID: PMC10745014 DOI: 10.3390/md21120631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Six previously undescribed cytosporone derivatives (phomotones A-E (1-5) and phomotone F (13)), two new spiro-alkanol phombistenes A-B (14-15), and seven known analogs (6-12) were isolated from the mangrove endophytic fungus Phomopsis sp. QYM-13. The structures of these compounds were elucidated using spectroscopic data analysis, electronic circular dichroism (ECD), and 13C NMR calculations. Compound 14 features an unprecedented 1,6-dioxaspiro[4.5]decane ring system. All isolates were evaluated for their inhibitory effect on nitric oxide (NO) in LPS-induced RAW264.7 cells. The results showed that compounds 1, 6, 8, and 11 exhibited potent bioactivities by comparing with positive control. Then, compound 1 displayed the anti-inflammatory effect by inhibiting the MAPK/NF-κB signaling pathways. Molecular docking further revealed the possible mechanism of compound 1 interaction with ERK protein.
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Affiliation(s)
- Guisheng Wang
- School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (Z.L.); (J.Z.)
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Yilin Yuan
- National R&D Center for Edible Fungus Processing Technology, Henan University, Kaifeng 475004, China;
| | - Zhaokun Li
- School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (Z.L.); (J.Z.)
| | - Junhao Zhu
- School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (Z.L.); (J.Z.)
| | - Zhigang She
- School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Yan Chen
- School of Pharmacy, Anhui Medical University, Hefei 230032, China; (G.W.); (Z.L.); (J.Z.)
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Yin Y, Tan Q, Wu J, Chen T, Yang W, She Z, Wang B. The Polyketides with Antimicrobial Activities from a Mangrove Endophytic Fungus Trichoderma lentiforme ML-P8-2. Mar Drugs 2023; 21:566. [PMID: 37999390 PMCID: PMC10672575 DOI: 10.3390/md21110566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 11/25/2023] Open
Abstract
Five new polyketides, including two chromones (1-2), two phenyl derivatives (4-5), and a tandyukusin derivative (6), along with five known polyketides (3 and 7-10) were isolated from mangrove endophytic fungus Trichoderma lentiforme ML-P8-2. The planar structures of compounds were elucidated via detailed 1D, 2D NMR, and HR-ESI-MS analysis. ECD spectra, optical rotation values calculation, and alkali hydrolysis were applied in the determination of the absolute configuration of the new compounds. In bioassays, 6 and 9 exhibited promising antifungal activities against Penicillium italicum, with an MIC value of 6.25 μM for both compounds. Moreover, 3 displayed moderate AChE inhibitory activity with an IC50 value of 20.6 ± 0.3 μM.
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Affiliation(s)
| | | | | | | | | | | | - Bo Wang
- School of Chemistry, Sun Yat-sen University, Guangzhou 510006, China; (Y.Y.); (Q.T.); (J.W.); (T.C.); (W.Y.); (Z.S.)
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