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Gao Y, Wang J, Meesakul P, Zhou J, Liu J, Liu S, Wang C, Cao S. Cytotoxic Compounds from Marine Fungi: Sources, Structures, and Bioactivity. Mar Drugs 2024; 22:70. [PMID: 38393041 PMCID: PMC10890532 DOI: 10.3390/md22020070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024] Open
Abstract
Marine fungi, such as species from the Penicillium and Aspergillus genera, are prolific producers of a diversity of natural products with cytotoxic properties. These fungi have been successfully isolated and identified from various marine sources, including sponges, coral, algae, mangroves, sediment, and seawater. The cytotoxic compounds derived from marine fungi can be categorized into five distinct classes: polyketides, peptides, terpenoids and sterols, hybrids, and other miscellaneous compounds. Notably, the pre-eminent group among these compounds comprises polyketides, accounting for 307 out of 642 identified compounds. Particularly, within this collection, 23 out of the 642 compounds exhibit remarkable cytotoxic potency, with IC50 values measured at the nanomolar (nM) or nanogram per milliliter (ng/mL) levels. This review elucidates the originating fungal strains, the sources of isolation, chemical structures, and the noteworthy antitumor activity of the 642 novel natural products isolated from marine fungi. The scope of this review encompasses the period from 1991 to 2023.
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Affiliation(s)
- Yukang Gao
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Universities in Guangxi for Excavation and Development of Ancient Ethnomedicinal Recipes, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China; (Y.G.); (J.W.); (J.Z.); (J.L.); (S.L.)
| | - Jianjian Wang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Universities in Guangxi for Excavation and Development of Ancient Ethnomedicinal Recipes, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China; (Y.G.); (J.W.); (J.Z.); (J.L.); (S.L.)
| | - Pornphimon Meesakul
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, Hilo, HI 96720, USA;
| | - Jiamin Zhou
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Universities in Guangxi for Excavation and Development of Ancient Ethnomedicinal Recipes, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China; (Y.G.); (J.W.); (J.Z.); (J.L.); (S.L.)
| | - Jinyan Liu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Universities in Guangxi for Excavation and Development of Ancient Ethnomedicinal Recipes, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China; (Y.G.); (J.W.); (J.Z.); (J.L.); (S.L.)
| | - Shuo Liu
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Universities in Guangxi for Excavation and Development of Ancient Ethnomedicinal Recipes, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China; (Y.G.); (J.W.); (J.Z.); (J.L.); (S.L.)
| | - Cong Wang
- Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Key Laboratory of Universities in Guangxi for Excavation and Development of Ancient Ethnomedicinal Recipes, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, Guangxi Minzu University, Nanning 530006, China; (Y.G.); (J.W.); (J.Z.); (J.L.); (S.L.)
| | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai’i at Hilo, Hilo, HI 96720, USA;
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Fang ST, Shi ZZ, Song YP, Yin XL, Ji NY. New ophiobolin sesterterpenoid and drimane sesquiterpenoids from a marine-alga-derived fungus Aspergillus sp. Fitoterapia 2023; 170:105659. [PMID: 37648029 DOI: 10.1016/j.fitote.2023.105659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/25/2023] [Accepted: 08/27/2023] [Indexed: 09/01/2023]
Abstract
Further investigation of secondary metabolites of a marine-alga-derived fungus Aspergillus sp. RR-YLW-12 led to isolate one new ophiobolin-type sesterterpenoid (1), four new drimane-type sesquiterpenoids (2-5) and one natural occurring compound (6), together with seven known compounds (7-13). Their structures and stereochemistry were elucidated by extensive spectroscopic analysis of NMR and HRMS experiments, and by comparison with the literature data. All isolates were evaluated for growth inhibition of five marine harmful microalgae. The new compounds exhibited significant to moderate inhibitory effects towards all tested microalgae species with IC50 values ranging from 5.8 to 54.5 μg/mL.
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Affiliation(s)
- Sheng-Tao Fang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| | - Zhen-Zhen Shi
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| | - Yin-Ping Song
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| | - Xiu-Li Yin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| | - Nai-Yun Ji
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, People's Republic of China.
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3
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Zhang W, Hao L, Qin X, Huang J, Yang R, Li J, Huang X. A new lactone from mangrove endophytic fungus Aspergillus sp. GXNU-A9. Nat Prod Res 2023; 37:417-423. [PMID: 34937443 DOI: 10.1080/14786419.2021.1977298] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A new lactone, asperlactone A (1), and four known lactone derivatives 2-5 were isolated from the mangrove endophytic fungus Aspergillus sp. GXNU-A9. Their structures were elucidated based on high-resolution electrospray ionization mass spectrometry (HR-ESI-MS) datum, extensive nuclear magnetic resonance (NMR) spectroscopic analysis, and comparison with literature data. The structure of 1 was further confirmed by single-crystal X-ray diffraction analysis, and the absolute configuration of 1 was established. Compounds 1-5 were evaluated for their anti-inflammatory activities against nitric oxide (NO) production, and compounds 1-5 showed moderate inhibitory activities with IC50 values ranging from 15.87 to 30.48 µM.
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Affiliation(s)
- Wenxiu Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Lili Hao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Xiaoya Qin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Jiguo Huang
- Guangdong Industry Polytechnic, Guangzhou, P. R. China
| | - Ruiyun Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Jun Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Xishan Huang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
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4
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Salman K, Zhu H, Sun Z, Li Y, Wang L, Wang R, Guo Z, Jiao R. Seven drimane-type sesquiterpenoids from an earwig-associated Aspergillus sp. Chin J Nat Med 2023; 21:58-64. [PMID: 36641233 DOI: 10.1016/s1875-5364(23)60385-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Indexed: 01/15/2023]
Abstract
Drimane-type sesquiterpenoids are widely distributed in fungi. From the ethyl acetate extract of the earwig-derived Aspergillus sp. NF2396, seven new drimane-type sesquiterpenoids, named drimanenoids A-G (1-7), were isolated. Their structures were elucidated by diverse spectroscopic analysis including high-resolution ESI-MS, one- and two-dimensional NMR spectroscopy. Drimanenoids A-F (1-6) are new members of drimane-type sesquiterpenoid esterified with unsaturated fatty acid side chain at C-6. Drimanenoids C (3), D (4) and F (6) showed antibacterial activity against five types of bacteria with different inhibition diameters. Drimanenoid D (4) exhibited moderate cytotoxicity against human myelogenous leukemia cell line K562 with an IC50 value of 12.88 ± 0.11 μmol·L-1.
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Affiliation(s)
- Khan Salman
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210093, China
| | - Hongjie Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210093, China
| | - Ziqian Sun
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210093, China
| | - Yilin Li
- Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou 571101, China; Hainan Academy of Ocean and Fisheries Sciences, Hainan Tropical Ocean University, Haikou 571126, China
| | - Lan Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210093, China
| | - Rong Wang
- Hainan Academy of Ocean and Fisheries Sciences, Hainan Tropical Ocean University, Haikou 571126, China
| | - Zhikai Guo
- Hainan Key Laboratory of Tropical Microbe Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute for Tropical Agricultural Resources, Haikou 571101, China.
| | - Ruihua Jiao
- State Key Laboratory of Pharmaceutical Biotechnology, Institute of Functional Biomolecules, School of Life Sciences, Nanjing University, Nanjing 210093, China.
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5
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DU W, YANG Q, XU H, DONG L. Drimane-type sesquiterpenoids from fungi. Chin J Nat Med 2022; 20:737-748. [DOI: 10.1016/s1875-5364(22)60190-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Indexed: 11/03/2022]
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6
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Zhuravleva OI, Belousova EB, Oleinikova GK, Antonov AS, Khudyakova YV, Rasin AB, Popov RS, Menchinskaya ES, Trinh PTH, Yurchenko AN, Yurchenko EA. Cytotoxic Drimane-Type Sesquiterpenes from Co-Culture of the Marine-Derived Fungi Aspergillus carneus KMM 4638 and Beauveria felina (= Isaria felina) KMM 4639. Mar Drugs 2022; 20:md20090584. [PMID: 36135773 PMCID: PMC9504587 DOI: 10.3390/md20090584] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/14/2022] [Accepted: 09/14/2022] [Indexed: 11/16/2022] Open
Abstract
Chemical investigation of a coculture of the marine-derived fungi Beauveria felina KMM 4639 and Aspergillus carneus KMM 4638 led to the identification of three new drimane-type sesquiterpenes, asperflavinoids B, D and E (2, 4, 5), and nine previously reported related compounds. The structures of these compounds were established using spectroscopic methods and by comparison with known analogues. We also investigated the cytotoxic activity of the isolated compounds against several cancer and normal cell lines. Asperflavinoid C (3) and ustusolate E (9) exerted a significant effect on human breast cancer MCF-7 cell viability, with IC50 values of 10 µM, and induced in caspase-dependent apoptosis and arrest of the MCF-7 cell cycle in the G2/M phase in these cells.
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Affiliation(s)
- Olesya I. Zhuravleva
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
- Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Elena B. Belousova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
- Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia
| | - Galina K. Oleinikova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
| | - Alexandr S. Antonov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
| | - Yuliya V. Khudyakova
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
| | - Anton B. Rasin
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
| | - Roman S. Popov
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
| | - Ekaterina S. Menchinskaya
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
| | - Phan Thi Hoai Trinh
- Department of Marine Biotechnology, Nhatrang Institute of Technology Research and Application, Vietnam Academy of Science and Technology, Nha Trang 650000, Vietnam
| | - Anton N. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
- Correspondence: (A.N.Y.); (E.A.Y.); Tel.: +7-423-231-1168 (A.N.Y. & E.A.Y.)
| | - Ekaterina A. Yurchenko
- G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch of the Russian Academy of Sciences, Prospect 100-letiya Vladivostoka, 159, Vladivostok 690022, Russia
- Correspondence: (A.N.Y.); (E.A.Y.); Tel.: +7-423-231-1168 (A.N.Y. & E.A.Y.)
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7
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Anti-inflammatory Polyketides from the Marine-Derived Fungus Eutypella scoparia. Mar Drugs 2022; 20:md20080486. [PMID: 36005490 PMCID: PMC9410037 DOI: 10.3390/md20080486] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/27/2022] [Accepted: 07/27/2022] [Indexed: 02/04/2023] Open
Abstract
Three new polyketides, eutyketides A and B (1 and 2) and cytosporin X (3), along with four known compounds (4–7), were obtained from the marine-derived fungus Eutypella scoparia. The planar structures of 1 and 2 were elucidated by extensive HRMS and 1D and 2D NMR analyses. Their relative configurations of C-13 and C-14 were determined with chemical conversions by introducing an acetonylidene group. The absolute configurations of 1–3 were determined by comparing their experimental electronic circular dichroism (ECD) data with their computed ECD results. All of the isolated compounds were tested for their anti-inflammatory activities on lipopolysaccharide-induced nitric oxide production in RAW 264.7 macrophages. Compounds 5 and 6 showed stronger anti-inflammatory activities than the other compounds, with the inhibition of 49.0% and 54.9% at a concentration of 50.0 µg/mL, respectively.
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8
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Huang Y, Valiante V. Chemical Diversity and Biosynthesis of Drimane-Type Sesquiterpenes in the Fungal Kingdom. Chembiochem 2022; 23:e202200173. [PMID: 35574818 PMCID: PMC9546479 DOI: 10.1002/cbic.202200173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/09/2022] [Indexed: 11/05/2022]
Abstract
Drimane-type sesquiterpenes are a class of compounds produced by a wide range of organisms, initially isolated and characterized in plants. Meanwhile, in the past 20-30 years, a large number of novel structures from many divergent fungi have been elucidated. Recently, the biosynthesis of drimane-type sesquiter-penes and their esters has been explained in two filamentous fungi, namely Aspergillus oryzae and Aspergillus calidoustus, disclosing the basic biosynthetic principles needed to identify similar pathways in the fungal kingdom.
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Affiliation(s)
- Ying Huang
- Leibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute: Leibniz-Institut fur Naturstoff-Forschung und Infektionsbiologie eV Hans-Knoll-Institut, Biobricks of Microbial Natural Product Syntheses, GERMANY
| | - Vito Valiante
- Leibniz-Institut für Naturstoff-Forschung und Infektionsbiologie eV Hans-Knöll-Institut, Biobricks of Microbial Natural Product Syntheses, Adolf-Reichwein-Str. 23, 07745, Jena, GERMANY
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9
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Anticancer Activity of Natural and Semi-Synthetic Drimane and Coloratane Sesquiterpenoids. Molecules 2022; 27:molecules27082501. [PMID: 35458699 PMCID: PMC9031474 DOI: 10.3390/molecules27082501] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/09/2022] [Accepted: 04/11/2022] [Indexed: 12/12/2022] Open
Abstract
Drimane and coloratane sesquiterpenoids are present in several plants, microorganisms, and marine life. Because of their cytotoxic activity, these sesquiterpenoids have received increasing attention as a source for new anticancer drugs and pharmacophores. Natural drimanes and coloratanes, as well as their semi-synthetic derivatives, showed promising results against cancer cell lines with in vitro activities in the low micro- and nanomolar range. Despite their high potential as novel anticancer agents, the mode of action and structure–activity relationships of drimanes and coloratanes have not been completely enlightened nor systematically reviewed. Our review aims to give an overview of known structures and derivatizations of this class of sesquiterpenoids, as well as their activity against cancer cells and potential modes-of-action. The cytotoxic activities of about 40 natural and 25 semi-synthetic drimanes and coloratanes are discussed. In addition to that, we give a summary about the clinical significance of drimane and coloratane sesquiterpenoids.
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10
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Zhou D, Zhang W, Hao L, Qin X, Yang R, Li J, Huang X. A new sesquiterpene from mangrove endophytic fungus Aspergillus sp. GXNU-MA1. Nat Prod Res 2022; 36:1857-1863. [DOI: 10.1080/14786419.2020.1824225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Dexiong Zhou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Wenxiu Zhang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Lili Hao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Xiaoya Qin
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Ruiyun Yang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Jun Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
| | - Xishan Huang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, P. R. China
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Structure Revision and Protein Tyrosine Phosphatase Inhibitory Activity of Drazepinone. Mar Drugs 2021; 19:md19120714. [PMID: 34940713 PMCID: PMC8708580 DOI: 10.3390/md19120714] [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: 12/08/2021] [Revised: 12/16/2021] [Accepted: 12/20/2021] [Indexed: 12/29/2022] Open
Abstract
From the marine-derived fungus Penicillium sumatrense (Trichocomaceae), a pair of enantiomers [(+)-1 and (−)-1] were isolated with identical 1D NMR data to drazepinone, which was originally reported to have a trisubstituted naphthofuroazepinone skeleton. In this study, we confirmed the structures of the two enantiomers as drazepinone and revised their structures by detailed analysis of extensive 2D NMR data and a comparison of the calculated 13C chemical shifts, ECD, VCD, and ORD spectra with those of the experiment ones. (+)-1 and (−)-1 were evaluated for their PTP inhibitory activity in vitro. (−)-1 showed selective PTP inhibitory activity against PTP1B and TCPTP with IC50 values of 1.56 and 12.5 μg/mL, respectively.
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12
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Huang Y, Hoefgen S, Valiante V. Biosynthesis of Fungal Drimane‐Type Sesquiterpene Esters. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ying Huang
- Independent Junior Research Group Biobricks of Microbial Natural Product Syntheses Leibniz Institute for Natural Product Research and Infection Biology Hans Knöll Institute (HKI) Beutenbergstrasse 11a 07745 Jena Germany
| | - Sandra Hoefgen
- Independent Junior Research Group Biobricks of Microbial Natural Product Syntheses Leibniz Institute for Natural Product Research and Infection Biology Hans Knöll Institute (HKI) Beutenbergstrasse 11a 07745 Jena Germany
| | - Vito Valiante
- Independent Junior Research Group Biobricks of Microbial Natural Product Syntheses Leibniz Institute for Natural Product Research and Infection Biology Hans Knöll Institute (HKI) Beutenbergstrasse 11a 07745 Jena Germany
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13
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Huang Y, Hoefgen S, Valiante V. Biosynthesis of Fungal Drimane-Type Sesquiterpene Esters. Angew Chem Int Ed Engl 2021; 60:23763-23770. [PMID: 34468074 PMCID: PMC8596746 DOI: 10.1002/anie.202108970] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/13/2021] [Indexed: 11/24/2022]
Abstract
Drimane-type sesquiterpenes exhibit various biological activities and are widely present in eukaryotes. Here, we completely elucidated the biosynthetic pathway of the drimane-type sesquiterpene esters isolated from Aspergillus calidoustus and we discovered that it involves a drimenol cyclase having the same catalytic function previously only reported in plants. Moreover, since many fungal drimenol derivatives possess a γ-butyrolactone ring, we clarified the functions of the cluster-associated cytochrome P450 and FAD-binding oxidoreductase discovering that these two enzymes are solely responsible for the formation of those structures. Furthermore, swapping of the enoyl reductase domain in the identified polyketide synthase led to the production of metabolites containing various polyketide chains with different levels of saturation. These findings have deepened our understanding of how fungi synthesize drimane-type sesquiterpenes and the corresponding esters.
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Affiliation(s)
- Ying Huang
- Independent Junior Research Group Biobricks of Microbial Natural Product SynthesesLeibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute (HKI)Beutenbergstrasse 11a07745JenaGermany
| | - Sandra Hoefgen
- Independent Junior Research Group Biobricks of Microbial Natural Product SynthesesLeibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute (HKI)Beutenbergstrasse 11a07745JenaGermany
| | - Vito Valiante
- Independent Junior Research Group Biobricks of Microbial Natural Product SynthesesLeibniz Institute for Natural Product Research and Infection BiologyHans Knöll Institute (HKI)Beutenbergstrasse 11a07745JenaGermany
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14
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Lv H, Wang K, Xue Y, Chen J, Su H, Zhang J, Wu Y, Jia J, Bi H, Wang H, Hong K, Li X. Three New Metabolites From the Marine-Derived Fungus Aspergillus sp. WHUF03110. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211055009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Two new xanthone derivatives, spinosusones A (1) and B (2), and a new tryptoquivaline analogue, asperdiazapinone G (3), together with nine known compounds (4-12) were isolated from the EtOAc extract of the marine-derived fungus Aspergillus sp . WHUF03110. The structures of 1-3 were determined by spectroscopic analysis, and comparison with literature data. Most of these isolated compounds were evaluated for their antimicrobial activities against ten Gram-negative and seven Gram-positive bacteria, Mycobacterium smegmatis ATCC 607, Candida albicans ATCC SC5314, and C. albicans YY-1-4. Compound 10 displayed strong antibacterial activity against five Gram-positive bacteria ( Bacillus subtilis 168, Staphylococcus aureus ATCC25923, S. aureus NEWMAN, S. aureus USA300, S. aureus NRS 271) with MIC values ranging from 1.0 to 2.0 μg/mL, and displayed moderate antibacterial activity against four Gram-negative bacteria ( Helicobacter pylori 26695, H. pylori G27, H. pylori 159, H. pylori 129) and M. smegmatis ATCC 607 with a MIC value of 8.0 μg/mL.
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Affiliation(s)
- Huawei Lv
- College of Pharmaceutical Science & Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Kebo Wang
- College of Pharmaceutical Science & Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Yaxin Xue
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
| | - Jun Chen
- Shanghai Hadal Biomedical Engineering Co., Ltd, Shanghai, P. R. China
| | - Haibo Su
- College of Pharmaceutical Science & Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Jinkun Zhang
- College of Pharmaceutical Science & Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Yuanyuan Wu
- College of Pharmaceutical Science & Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Jia Jia
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Hongkai Bi
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology, Nanjing Medical University, Nanjing, China
| | - Hong Wang
- College of Pharmaceutical Science & Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Zhejiang University of Technology, Hangzhou, P. R. China
| | - Kui Hong
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
| | - Xingnuo Li
- College of Pharmaceutical Science & Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Zhejiang University of Technology, Hangzhou, P. R. China
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15
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Shabana S, Lakshmi KR, Satya AK. An Updated Review of Secondary Metabolites from Marine Fungi. Mini Rev Med Chem 2021; 21:602-642. [PMID: 32981503 DOI: 10.2174/1389557520666200925142514] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 07/13/2020] [Accepted: 07/24/2020] [Indexed: 11/22/2022]
Abstract
Marine fungi are valuable and richest sources of novel natural products for medicinal and pharmaceutical industries. Nutrient depletion, competition or any other type of metabolic stress which limits marine fungal growth promotes the formation and secretion of secondary metabolites. Generally secondary metabolites can be produced by many different metabolic pathways and include antibiotics, cytotoxic and cyto-stimulatory compounds. Marine fungi produce many different types of secondary metabolites that are of commercial importance. This review paper deals with around 187 novel compounds and 212 other known compounds with anticancer and antibacterial activities with a special focus on the period from 2011-2019. Furthermore, this review highlights the sources of organisms, chemical classes and biological activities (anticancer and antibacterial) of metabolites, that were isolated and structurally elucidated from marine fungi to throw a helping hand for novel drug development.
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Affiliation(s)
- Syed Shabana
- Department of Biotechnology, Acharya Nagarjuna University, Nagarjuna Nagar 522510, Guntur, Andhra Pradesh, India
| | - K Rajya Lakshmi
- Department of Biotechnology, Acharya Nagarjuna University, Nagarjuna Nagar 522510, Guntur, Andhra Pradesh, India
| | - A Krishna Satya
- Department of Biotechnology, Acharya Nagarjuna University, Nagarjuna Nagar 522510, Guntur, Andhra Pradesh, India
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16
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Orfali R, Aboseada MA, Abdel-Wahab NM, Hassan HM, Perveen S, Ameen F, Alturki E, Abdelmohsen UR. Recent updates on the bioactive compounds of the marine-derived genus Aspergillus. RSC Adv 2021; 11:17116-17150. [PMID: 35479707 PMCID: PMC9033173 DOI: 10.1039/d1ra01359a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/09/2021] [Indexed: 12/14/2022] Open
Abstract
The genus Aspergillus is widely distributed in terrestrial and marine environments. In the marine environment, several Aspergillus species have proved their potential to produce a plethora of secondary metabolites including polyketides, sterols, fatty acids, peptides, alkaloids, terpenoids and miscellaneous compounds, displaying a variety of pharmacological activities such as antimicrobial, cytotoxicity, anti-inflammatory and antioxidant activity. From the beginning of 2015 until December 2020, about 361 secondary metabolites were identified from different marine Aspergillus species. In our review, we highlight secondary metabolites from various marine-derived Aspergillus species reported between January 2015 and December 2020 along with their biological potential and structural aspects whenever applicable. The genus Aspergillus is widely distributed in terrestrial and marine environments.![]()
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Affiliation(s)
- Raha Orfali
- Department of Pharmacognosy, College of Pharmacy, King Saud University P. O. Box 22452 Riyadh 11495 Kingdom of Saudi Arabia
| | - Mahmoud A Aboseada
- Department of Pharmacognosy, Faculty of Pharmacy, Nahda University Beni-Suef 62513 Egypt
| | - Nada M Abdel-Wahab
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt +20-86-2369075 +20-86-2347759
| | - Hossam M Hassan
- Department of Pharmacognosy, Faculty of Pharmacy, Beni-Suef University Beni-Suef 62513 Egypt
| | - Shagufta Perveen
- Department of Pharmacognosy, College of Pharmacy, King Saud University P. O. Box 22452 Riyadh 11495 Kingdom of Saudi Arabia
| | - Fuad Ameen
- Department of Botany & Microbiology, College of Science, King Saud University Riyadh Saudi Arabia
| | - Eman Alturki
- Department of Pharmacognosy, College of Pharmacy, King Saud University P. O. Box 22452 Riyadh 11495 Kingdom of Saudi Arabia
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University 61519 Minia Egypt +20-86-2369075 +20-86-2347759.,Department of Pharmacognosy, Faculty of Pharmacy, Deraya University 61111 New Minia Egypt
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17
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Antibacterial Secondary Metabolites from Marine-Derived Fungus Aspergillus sp. IMCASMF180035. Antibiotics (Basel) 2021; 10:antibiotics10040377. [PMID: 33916658 PMCID: PMC8066187 DOI: 10.3390/antibiotics10040377] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 11/17/2022] Open
Abstract
Four new secondary metabolites, including one spiro[anthracenone-xanthene] derivative aspergiloxathene A (1), one penicillide analogue, Δ2′-1′-dehydropenicillide (2), and two new phthalide derivatives, 5-methyl-3-methoxyepicoccone (3) and 7-carboxy-4-hydroxy-6-methoxy-5-methylphthalide (4), together with four known compounds, yicathin C (5), dehydropenicillide (6), 3-methoxyepicoccone (7), 4-hydroxy-6-methoxy-5-methylphthalide (8), were identified from the marine-derived fungus Aspergillus sp. IMCASMF180035. Their structures were determined by spectroscopic data, including high-resolution electrospray ionization mass spectrometry (HRESIMS), 1D and 2D nuclear magnetic resonance (NMR) techniques. Compound 1 was identified as the first jointed molecule by xanthene and anthracenone moieties possessing an unprecedented carbon skeleton with spiro-ring system. All compounds were evaluated activities against Staphylococcus aureus, methicillin resistant S. aureus (MRSA), Escherichia coli, Escherichia faecium, Pseudomonas aeruginosa, and Helicobacter pylori. Compound 1 showed significant inhibitory effects against S. aureus and MRSA, with minimum inhibitory concentration (MIC) values of 5.60 and 22.40 µM. Compounds 2 and 6 exhibited potent antibacterial activities against H. pylori, with MIC values of 21.73 and 21.61 µM, respectively.
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18
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Metabolites of Marine Sediment-Derived Fungi: Actual Trends of Biological Activity Studies. Mar Drugs 2021; 19:md19020088. [PMID: 33557071 PMCID: PMC7913796 DOI: 10.3390/md19020088] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/22/2021] [Accepted: 02/01/2021] [Indexed: 12/11/2022] Open
Abstract
Marine sediments are characterized by intense degradation of sedimenting organic matter in the water column and near surface sediments, combined with characteristically low temperatures and elevated pressures. Fungi are less represented in the microbial communities of sediments than bacteria and archaea and their relationships are competitive. This results in wide variety of secondary metabolites produced by marine sediment-derived fungi both for environmental adaptation and for interspecies interactions. Earlier marine fungal metabolites were investigated mainly for their antibacterial and antifungal activities, but now also as anticancer and cytoprotective drug candidates. This review aims to describe low-molecular-weight secondary metabolites of marine sediment-derived fungi in the context of their biological activity and covers research articles published between January 2016 and November 2020.
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19
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Carroll AR, Copp BR, Davis RA, Keyzers RA, Prinsep MR. Marine natural products. Nat Prod Rep 2021; 38:362-413. [PMID: 33570537 DOI: 10.1039/d0np00089b] [Citation(s) in RCA: 198] [Impact Index Per Article: 66.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
This review covers the literature published in 2019 for marine natural products (MNPs), with 719 citations (701 for the period January to December 2019) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1490 in 440 papers for 2019), together with the relevant biological activities, source organisms and country of origin. Pertinent reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included. Methods used to study marine fungi and their chemical diversity have also been discussed.
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Affiliation(s)
- Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Australia. and Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia and School of Enivironment and Science, Griffith University, Brisbane, Australia
| | - Robert A Keyzers
- Centre for Biodiscovery, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Michèle R Prinsep
- Chemistry, School of Science, University of Waikato, Hamilton, New Zealand
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20
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Antimicrobial Meroterpenoids and Erythritol Derivatives Isolated from the Marine-Algal-Derived Endophytic Fungus Penicillium chrysogenum XNM-12. Mar Drugs 2020; 18:md18110578. [PMID: 33233849 PMCID: PMC7699931 DOI: 10.3390/md18110578] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 11/16/2022] Open
Abstract
One new meroterpenoid-type alkaloid, oxalicine C (1), and two new erythritol derivatives, penicierythritols A (6) and B (7), together with four known meroterpenoids (2-5), were isolated from the marine algal-derived endophytic fungus Penicillium chrysogenum XNM-12. Their planar structures were determined by means of spectroscopic analyses, including UV, 1D and 2D NMR, and HRESIMS spectra. Their stereochemical configurations were established by comparing the experimental and calculated electronic circular dichroism (ECD) spectra for compound 1, as well as by comparison of the optical rotations with literature data for compounds 6 and 7. Notably, oxalicine C (1) represents the first example of an oxalicine alkaloid with a cleaved α-pyrone ring, whereas penicierythritols A (6) and B (7) are the first reported from the Penicillium species. The antimicrobial activities of compounds 1-7 were evaluated. Compounds 1 and 6 exhibited moderate antibacterial effects against the plant pathogen Ralstonia solanacearum with minimum inhibitory concentration (MIC) values of 8 and 4 μg/mL, respectively. Compound 6 also possesses moderate antifungal properties against the plant pathogen Alternaria alternata with a MIC value of 8 μg/mL.
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21
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Jiang M, Wu Z, Guo H, Liu L, Chen S. A Review of Terpenes from Marine-Derived Fungi: 2015-2019. Mar Drugs 2020; 18:E321. [PMID: 32570903 PMCID: PMC7345631 DOI: 10.3390/md18060321] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/16/2020] [Accepted: 06/16/2020] [Indexed: 12/16/2022] Open
Abstract
Marine-derived fungi are a significant source of pharmacologically active metabolites with interesting structural properties, especially terpenoids with biological and chemical diversity. In the past five years, there has been a tremendous increase in the rate of new terpenoids from marine-derived fungi being discovered. In this updated review, we examine the chemical structures and bioactive properties of new terpenes from marine-derived fungi, and the biodiversity of these fungi from 2015 to 2019. A total of 140 research papers describing 471 new terpenoids of six groups (monoterpenes, sesquiterpenes, diterpenes, sesterterpenes, triterpenes, and meroterpenes) from 133 marine fungal strains belonging to 34 genera were included. Among them, sesquiterpenes, meroterpenes, and diterpenes comprise the largest proportions of terpenes, and the fungi genera of Penicillium, Aspergillus, and Trichoderma are the dominant producers of terpenoids. The majority of the marine-derived fungi are isolated from live marine matter: marine animals and aquatic plants (including mangrove plants and algae). Moreover, many terpenoids display various bioactivities, including cytotoxicity, antibacterial activity, lethal toxicity, anti-inflammatory activity, enzyme inhibitor activity, etc. In our opinion, the chemical diversity and biological activities of these novel terpenoids will provide medical and chemical researchers with a plenty variety of promising lead compounds for the development of marine drugs.
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Affiliation(s)
- Minghua Jiang
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; (M.J.); (Z.W.); (H.G.); (L.L.)
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou 510006, China
| | - Zhenger Wu
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; (M.J.); (Z.W.); (H.G.); (L.L.)
| | - Heng Guo
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; (M.J.); (Z.W.); (H.G.); (L.L.)
| | - Lan Liu
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; (M.J.); (Z.W.); (H.G.); (L.L.)
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou 510006, China
- Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China
| | - Senhua Chen
- School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China; (M.J.); (Z.W.); (H.G.); (L.L.)
- South China Sea Bio-Resource Exploitation and Utilization Collaborative Innovation Center, Guangzhou 510006, China
- Southern Laboratory of Ocean Science and Engineering (Guangdong, Zhuhai), Zhuhai 519000, China
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22
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Yang Z, Kaliaperumal K, Zhang J, Liang Y, Guo C, Zhang J, Yang B, Liu Y. Antifungal fatty acid derivatives against Penicillium italicum from the deep-sea fungus Aspergillus terreus SCSIO 41202. Nat Prod Res 2020; 35:4394-4401. [PMID: 31984766 DOI: 10.1080/14786419.2020.1716350] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The present work reports the bioassay-guided isolation of four bioactive fatty acid derivatives involving a new butenolide, namely sinulolide I (1) together with three known metabolites (2-4) from the deep-sea sediment derived fungus Aspergillus terreus SCSIO 41202. The chemical structure of compound 1 was elucidated based on extensive spectroscopic methods (1D/2D NMR and HR-ESI-MS), optical rotation and circular dichroism analyses, while the structures of the known compounds (2-4) were established by comparison of NMR spectral data with those reported in literature. All of these four compounds (1-4) exhibited significant antifungal activity against citrus postharvest pathogen Penicillium italicum (MICs around 0.031-0.125 mg/mL).
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Affiliation(s)
- Zhiqiang Yang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou, P.R. China
| | - Kumaravel Kaliaperumal
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou, P.R. China
| | - Jingyi Zhang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou, P.R. China
| | - Yan Liang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou, P.R. China
| | - Can Guo
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou, P.R. China
| | - Jun Zhang
- National Engineering Research Center of Navel Orange, Gannan Normal University, Ganzhou, P.R. China
| | - Bin Yang
- Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P.R. China
| | - Yonghong Liu
- Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, P.R. China
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