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Mayer AMS, Mayer VA, Swanson-Mungerson M, Pierce ML, Rodríguez AD, Nakamura F, Taglialatela-Scafati O. Marine Pharmacology in 2019-2021: Marine Compounds with Antibacterial, Antidiabetic, Antifungal, Anti-Inflammatory, Antiprotozoal, Antituberculosis and Antiviral Activities; Affecting the Immune and Nervous Systems, and Other Miscellaneous Mechanisms of Action. Mar Drugs 2024; 22:309. [PMID: 39057418 PMCID: PMC11278370 DOI: 10.3390/md22070309] [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: 05/22/2024] [Revised: 06/22/2024] [Accepted: 06/27/2024] [Indexed: 07/28/2024] Open
Abstract
The current 2019-2021 marine pharmacology literature review provides a continuation of previous reviews covering the period 1998 to 2018. Preclinical marine pharmacology research during 2019-2021 was published by researchers in 42 countries and contributed novel mechanism-of-action pharmacology for 171 structurally characterized marine compounds. The peer-reviewed marine natural product pharmacology literature reported antibacterial, antifungal, antiprotozoal, antituberculosis, and antiviral mechanism-of-action studies for 49 compounds, 87 compounds with antidiabetic and anti-inflammatory activities that also affected the immune and nervous system, while another group of 51 compounds demonstrated novel miscellaneous mechanisms of action, which upon further investigation, may contribute to several pharmacological classes. Thus, in 2019-2021, a very active preclinical marine natural product pharmacology pipeline provided novel mechanisms of action as well as new lead chemistry for the clinical marine pharmaceutical pipeline targeting the therapy of several disease categories.
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Affiliation(s)
- Alejandro M. S. Mayer
- Department of Pharmacology, College of Graduate Studies, Midwestern University, 555 31st Street, Downers Grove, IL 60515, USA;
| | - Veronica A. Mayer
- Department of Nursing Education, School of Nursing, Aurora University, 347 S. Gladstone Ave., Aurora, IL 60506, USA;
| | - Michelle Swanson-Mungerson
- Department of Microbiology and Immunology, College of Graduate Studies, Midwestern University, 555 31st Street, Downers Grove, IL 60515, USA;
| | - Marsha L. Pierce
- Department of Pharmacology, College of Graduate Studies, Midwestern University, 555 31st Street, Downers Grove, IL 60515, USA;
| | - Abimael D. Rodríguez
- Molecular Sciences Research Center, University of Puerto Rico, 1390 Ponce de León Avenue, San Juan, PR 00926, USA;
| | - Fumiaki Nakamura
- Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku 169-8555, Tokyo, Japan;
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Li H, Fu Y, Song F, Xu X. Recent Updates on the Antimicrobial Compounds from Marine-Derived Penicillium fungi. Chem Biodivers 2023; 20:e202301278. [PMID: 37877324 DOI: 10.1002/cbdv.202301278] [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: 08/25/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 10/26/2023]
Abstract
In this review, 72 compounds isolated from marine-derived Penicillium fungi and their antimicrobial activities are reviewed from 2020 to 2023. According to their structures, these compounds can be divided into terpenoids, polyketides, alkaloids and other structural compounds, among which terpenoids and polyketides are relatively large in number. Some compounds have powerful inhibitory effects against different pathogenic bacteria and fungi. This review aims to provide more useful information and enlightenment for further efficient utilization of Penicillium spp. and their secondary metabolites.
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Affiliation(s)
- Honghua Li
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education of China, School of Light Industry, Beijing Technology and Business University, 100048, Beijing, P. R. China
| | - Yanqi Fu
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education of China, School of Light Industry, Beijing Technology and Business University, 100048, Beijing, P. R. China
| | - Fuhang Song
- Key Laboratory of Geriatric Nutrition and Health, Ministry of Education of China, School of Light Industry, Beijing Technology and Business University, 100048, Beijing, P. R. China
| | - Xiuli Xu
- School of Ocean Sciences, China University of Geosciences, 100083, Beijing, P. R. China
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Li X, Shen W, Li G, Song Y, Lu X, Wong NK, Yan Y. Alternaphenol B2, a new IDH1 inhibitor from the coral-derived fungus Parengyodontium album SCSIO SX7W11. Nat Prod Res 2023:1-7. [PMID: 37850447 DOI: 10.1080/14786419.2023.2269462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 09/28/2023] [Indexed: 10/19/2023]
Abstract
A new aromatic polyketide, alternaphenol B2 (1), and four known compounds (2-5) were isolated from the coral-derived fungus Parengyodontium album SCSIO SX7W11. Their structures were elucidated by high-resolution mass spectrometry, 1D and 2D NMR spectroscopy and comparison with reported literatures. Compounds 1 and 2 exhibited selective inhibitory activity against isocitrate dehydrogenase mutant R132H (IDH1m), with IC50 values of 41.9 and 27.7 μM, respectively. Our findings thus provide a fresh incentive for investigation on IDH1m inhibitors as lead compounds for cancer treatment.
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Affiliation(s)
- Xiaoyue Li
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangzhou, China
- College of Oceanology, University of Chinese Academy of Sciences, Qingdao, China
| | - Wenbin Shen
- New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Microbial Medicine Engineering and Research Center, Hebei Industry Microbial Metabolic Engineering and Technology Research Center, Key Laboratory for New Drug Screening Technology of Shijiazhuang City, Shijiazhuang, Hebei, China
| | - Guochao Li
- New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Microbial Medicine Engineering and Research Center, Hebei Industry Microbial Metabolic Engineering and Technology Research Center, Key Laboratory for New Drug Screening Technology of Shijiazhuang City, Shijiazhuang, Hebei, China
| | - Yongxiang Song
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangzhou, China
- College of Oceanology, University of Chinese Academy of Sciences, Qingdao, China
| | - Xinhua Lu
- New Drug Research and Development Center of North China Pharmaceutical Group Corporation, National Microbial Medicine Engineering and Research Center, Hebei Industry Microbial Metabolic Engineering and Technology Research Center, Key Laboratory for New Drug Screening Technology of Shijiazhuang City, Shijiazhuang, Hebei, China
| | - Nai-Kei Wong
- Clinical Pharmacology Section, Department of Pharmacology, Shantou University Medical College, Shantou, China
| | - Yan Yan
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangzhou, China
- College of Oceanology, University of Chinese Academy of Sciences, Qingdao, China
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Ashraf N, Anas A, Sukumaran V, Gopinath G, Idrees Babu KK, Dinesh Kumar PK. Recent advancements in coral health, microbiome interactions and climate change. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 878:163085. [PMID: 36996987 DOI: 10.1016/j.scitotenv.2023.163085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 05/13/2023]
Abstract
Corals are the visible indicators of the disasters induced by global climate change and anthropogenic activities and have become a highly vulnerable ecosystem on the verge of extinction. Multiple stressors could act individually or synergistically which results in small to large scale tissue degradation, reduced coral covers, and makes the corals vulnerable to various diseases. The coralline diseases are like the Chicken pox in humans because they spread hastily throughout the coral ecosystem and can devastate the coral cover formed over centuries in an abbreviated time. The extinction of the entire reef ecosystem will alter the ocean and earth's amalgam of biogeochemical cycles causing a threat to the entire planet. The current manuscript provides an overview of the recent advancement in coral health, microbiome interactions and climate change. Culture dependent and independent approaches in studying the microbiome of corals, the diseases caused by microorganisms, and the reservoirs of coral pathogens are also discussed. Finally, we discuss the possibilities of protecting the coral reefs from diseases through microbiome transplantation and the capabilities of remote sensing in monitoring their health status.
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Affiliation(s)
- Nizam Ashraf
- CSIR - National Institute of Oceanography, Regional Centre, Kochi 682018, India
| | - Abdulaziz Anas
- CSIR - National Institute of Oceanography, Regional Centre, Kochi 682018, India.
| | - Vrinda Sukumaran
- CSIR - National Institute of Oceanography, Regional Centre, Kochi 682018, India
| | - Girish Gopinath
- Department of Climate Variability and Aquatic Ecosystems, Kerala University of Fisheries and Ocean Studies (KUFOS), Puduvypu Campus, Kochi 682 508, India
| | - K K Idrees Babu
- Department of Science and Technology, Kavaratti, Lakshadweep 682555, India
| | - P K Dinesh Kumar
- CSIR - National Institute of Oceanography, Regional Centre, Kochi 682018, India
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Xu SS, Lai QL, Liu ZZ, Xu Y. Paracoccus onchidii sp. nov., a moderately halophilic bacterium isolated from a marine invertebrate from the South China Sea. Antonie Van Leeuwenhoek 2023:10.1007/s10482-023-01848-7. [PMID: 37231142 DOI: 10.1007/s10482-023-01848-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/18/2023] [Indexed: 05/27/2023]
Abstract
A novel moderately halophilic bacterial strain, designated Z330T, was isolated from the egg of a marine invertebrate of the genus Onchidium collected in the South China Sea. The 16S rRNA gene sequence of strain Z330T exhibited the highest similarity value to that of the type strain Paracoccus fistulariae KCTC 22803T (97.6%), Paracoccus seriniphilus NBRC 100798T (97.6%) and Paracoccus aestuarii DSM 19484T (97.6%). Phylogenomic and 16S rRNA phylogenetic analysis showed that strain Z330T was most closely related to P. seriniphilus NBRC 100798T and P. fistulariae KCTC 22803T. Strain Z330T grew optimally at 28-30 °C, pH 7.0-8.0 with the presence of 5.0-7.0% (w/v) NaCl. In addition, growth of strain Z330T occurred at 0.5-16% NaCl, indicated strain Z330T was a moderately halophilic and halotolerant bacterium of genus Paracoccus. The predominant respiratory quinone in strain Z330T was identified as ubiquinone-10. The major polar lipids of strain Z330T were phosphatidylcholine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylmonomethylethanolamine, glycolipid and six unidentified polar lipids. The major fatty acids of strain Z330T was summed feature 8 (C18:1 ω6c and/or C18:1 ω7c). The draft genome sequence of strain Z330T includes 4,084,570 bp in total (N50 = 174,985 bp) with a medium read coverage of 463.6 × and 83 scaffolds. The DNA G + C content of strain Z330T was 60.5%. In silico DNA-DNA hybridization with the four type strains showed 20.5, 22.3, 20.1 and 20.1% relatedness to Paracoccus fistulariae KCTC 22803T, Paracoccus seriniphilus NBRC 100798T, Paracoccus aestuarii DSM 19484T and Paracoccus denitrificans 1A10901T, respectively. And the average nucleotide identity (ANIb) values between strain Z330T and these four type strains were 76.2, 80.0, 75.8 and 73.8%, respectively, lower than the 95-96% threshold value for dividing prokaryotic species. On the basis of the phenotypic, phylogenetic, phylogenomic and chemotaxonomic properties, a novel species of the genus Paracoccus, Paracoccus onchidii sp. nov. is proposed with the type strain Z330T (= KCTC 92727T = MCCC 1K08325T).
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Affiliation(s)
- Shan-Shan Xu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518055, People's Republic of China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Qi-Liang Lai
- Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, People's Republic of China
| | - Zeng-Zhi Liu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518055, People's Republic of China.
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China.
| | - Ying Xu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518055, People's Republic of China
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Ahmed MMA, Ragab EA, Zayed A, El-Ghaly EM, Ismail SK, Khan SI, Ali Z, Chittiboyina AG, Khan IA. Litoarbolide A: an undescribed sesquiterpenoid from the Red Sea soft coral Litophyton arboreum with an in vitro anti-malarial activity evaluation. Nat Prod Res 2023; 37:542-550. [PMID: 35491702 DOI: 10.1080/14786419.2022.2071268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Soft corals distributed across the Red Sea coasts are a rich source of diverse and bioactive natural products. Chemical probing of the Red Sea soft coral Litophyton arboreum led to isolation and structural characterization of an undescribed sesquiterpenoid, litoarbolide A (1), along with 14 previously reported metabolites (2-15). The chemical structures of the isolates were assigned based on NMR as well as high resolution electrospray ionization mass spectrometry (HR-ESI-MS) data. Litoarbolide A is supposed to be the biosynthetic precursor to other sesquiterpenoids, which formed via further post-translational modifications. Furthermore, these metabolites were evaluated for anti-malarial activity, where only the acyclic sesquiterpenoid of a sec-germacrane nucleus (7) showed an activity against chloroquine-sensitive (D6) and chloroquine-resistant (W2) strains of Plasmodium falciparum with IC50 at 3.7 and 2.2 mg/mL, respectively. Moreover, the isolated metabolites were all non-toxic to the Vero cell line. These findings support the consideration of L. arboreum in further natural anti-malarial studies.
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Affiliation(s)
- Mohammed M A Ahmed
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt.,National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States.,Division of Pharmacognosy, Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
| | - Ehab A Ragab
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Ahmed Zayed
- Department of Pharmacognosy, Tanta University, College of Pharmacy, Tanta, Egypt.,Institute of Bioprocess Engineering, Technical University of Kaiserslautern, Kaiserslautern, Germany
| | - Elsayed M El-Ghaly
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Said K Ismail
- Department of Pharmacognosy, Faculty of Pharmacy, Al-Azhar University, Cairo, Egypt
| | - Shabana I Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States.,Division of Pharmacognosy, Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
| | - Zulfiqar Ali
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
| | - Amar G Chittiboyina
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
| | - Ikhlas A Khan
- National Center for Natural Products Research, School of Pharmacy, The University of Mississippi, University, Mississippi, United States.,Division of Pharmacognosy, Department of Biomolecular Sciences, School of Pharmacy, The University of Mississippi, University, Mississippi, United States
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7
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Halorotetin A: A Novel Terpenoid Compound Isolated from Ascidian Halocynthia rotetzi Exhibits the Inhibition Activity on Tumor Cell Proliferation. Mar Drugs 2023; 21:md21010051. [PMID: 36662224 PMCID: PMC9860651 DOI: 10.3390/md21010051] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/10/2023] [Accepted: 01/10/2023] [Indexed: 01/15/2023] Open
Abstract
Halocynthia roretzi, the edible ascidian, has been demonstrated to be an important source of bioactive natural metabolites. Here, we reported a novel terpenoid compound named Halorotetin A that was isolated from tunic ethanol extract of H. roretzi by silica gel column chromatography, preparative layer chromatography (PLC), and semipreparative-HPLC. 1H and 13C NMRs, 1H-1H COSY, HSQC, HMBC, NOESY, and HRESIMS profiles revealed that Halorotetin A was a novel terpenoid compound with antitumor potentials. We therefore treated the culture cells with Halorotetin A and found that it significantly inhibited the proliferation of a series of tumor cells by exerting cytotoxicity, especially for the liver carcinoma cell line (HepG-2 cells). Further studies revealed that Halorotetin A affected the expression of several genes associated with the development of hepatocellular carcinoma (HCC), including oncogenes (c-myc and c-met) and HCC suppressor genes (TP53 and KEAP1). In addition, we compared the cytotoxicities of Halorotetin A and doxorubicin on HepG-2 cells. To our surprise, the cytotoxicities of Halorotetin A and doxorubicin on HepG-2 cells were similar at the same concentration and Halorotetin A did not significantly reduce the viability of the normal cells. Thus, our study identified a novel compound that significantly inhibited the proliferation of tumor cells, which provided the basis for the discovery of leading compounds for antitumor drugs.
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Isosarcophytoxide Derivatives with a 2,5-Dihydrofuran Moiety from the Soft Coral Sarcophyton cinereum. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020641. [PMID: 36677699 PMCID: PMC9862023 DOI: 10.3390/molecules28020641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/01/2023] [Accepted: 01/05/2023] [Indexed: 01/11/2023]
Abstract
The present chemical investigation on the organic extract of the soft coral Sarcophyton cinereum has contributed to the isolation of four new cembranoids: 16β- and 16α-hydroperoxyisosarcophytoxides (1 and 2), 16β- and 16α-methoxyisosarcophytoxides (3 and 4), and a known cembranoid, lobocrasol (5). The structures of all isolates were elucidated by detailed spectroscopic analysis. Their structures were characterized by a 2,5-dihydrofuran moiety, of which the relative configuration was determined by DU8-based calculation for long-range coupling constants (4JH,H). The cytotoxicity and immunosuppressive activities of all isolates were evaluated in this study.
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Wu Q, Zhu H, Sun C, Zhou L, Wang H, Shi S, Tian X, Ju J. Halo- and Thiocarbazomycins from Coral- and Coral Reef Sands-Derived Actinomycetes. Mar Drugs 2022; 20:md20080537. [PMID: 36005541 PMCID: PMC9410401 DOI: 10.3390/md20080537] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/16/2022] Open
Abstract
Four actinomycete strains isolated from the coral Acropora austera and coral sand samples from the South China Sea, were found to produce a series of halogenated compounds baring similar ultraviolet absorption based on the analysis of HPLC and LC-MS. The production titers of halogenated compounds from Streptomyces diacarni SCSIO 64983 exceeded those of other similar strains leading us to focus on SCSIO 64983. Four new thiocarbazomycins A–B (1–2), chlocarbazomycin E (3), and brocarbazomycin A (4), together with three known chlocarbazomycins A–C (5–7) containing a carbazole core were identified, and their structures were determined using a combination of spectroscopic analysis including HRESIMS, 1D and 2D NMR. Structurally speaking, compounds 1 and 2 have the rare sulfur-containing carbazole nuclei, and 3 and 4 contain Cl and Br atoms, respectively. Although these compounds have not yet been found to have obvious biological activity, their discovery highlights the role of molecular libraries in subsequent drug discovery campaigns.
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Affiliation(s)
- Qiaoling Wu
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, RNAM Center for Marine Microbiology, 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, Beijing 110039, China
| | - Hongjie Zhu
- School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Changli Sun
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Le Zhou
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Huimin Wang
- School of Pharmacy, Institute of Marine Drug, Guangxi University of Traditional Chinese Medicine, Nanning 530200, China
| | - Songbiao Shi
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, RNAM Center for Marine Microbiology, 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, Beijing 110039, China
| | - Xinpeng Tian
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Jianhua Ju
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, RNAM Center for Marine Microbiology, 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, Beijing 110039, China
- Correspondence: ; Tel.: +86-20-8902-3028
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Sabdono A, Lestari ES, Sibero MT. Biogeographic assessment of Gorgonian-associated bacteria with antipathogenic Urinary Tract Infections (UTIs) in Karimunjawa Marine National Park, Java Sea, Indonesia. NATURE CONSERVATION 2022. [DOI: 10.3897/natureconservation.49.84825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Gorgonian corals of Karimunjawa are impacted by anthropogenic activities, such as increasingly high mariculture intensity with consequent eutrophication, overfishing, tourism, sewage, and other pollutant discharges, which result in changes in the microbial community structure. In this study, bacterial communities associated with six species of Gorgonian, Viminella sp., Ellisella sp., Antipathes sp., Melithaea sp., Astrogorgia sp., and Junceella sp. from both the Marine Protected Area (MPA) and non-Marine Protected Area (non-MPA) zones were screened for their antipathogenic potential against Urinary Tract Infections (UTIs) pathogens. The selected bacterial isolates were identified and compared for their abundance and diversity between the two zones. A total of 156 bacterial strains were assayed for their prospective antipathogenic compounds against seven UTI pathogens, including Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Streptococcus saptophyticus, Acinetobacter baumannii, Klebsiella pneumonia, and Candida albicans. The results showed that 17 of 92 (18.48%) and 6 of 64 (9.37%) bacterial isolates from MPA and non-MPA, respectively, exhibited antimicrobial activity in at least one of the UTI pathogens. By analyzing the gene of 16S rRNA, it was discovered that the 17 isolates of MPA were associated with phyla Actinobacteria, Firmicutes and Proteobacteria, including Streptomyces zhaozhoue, Nocardiopsis salina, Micrococcus endophyticus, Brevibacterium casei, Micrococcus yunnanensis, Saccharopolyspora coralli, Bacillus paramycoides, Virgibacillus salarius, Oceanobacillus iheyensis, and Vibrio alginolyticus. In contrast, only six selected isolates of non-MPA were associated with the phyla Actinobacteria and Proteobacteria, including Nocardiopsis salina, Micrococcus yunnanensis, and Acinetobacter soli. The Diversity Index (H’), Species Richness (S), and Relative Abundance of the MPA zone were higher than those of non-MPA. These results demonstrated that Gorgonian octocoral species in the MPA region harbour varied bacteria and we propose that many Gorgonian-associated bacteria have the prospective for advancing broad-spectrum antibiotics.
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Yang CW, Chien TM, Yen CH, Wu WJ, Sheu JH, Chang HW. Antibladder Cancer Effects of Excavatolide C by Inducing Oxidative Stress, Apoptosis, and DNA Damage In Vitro. Pharmaceuticals (Basel) 2022; 15:ph15080917. [PMID: 35893741 PMCID: PMC9329968 DOI: 10.3390/ph15080917] [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: 06/19/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 02/01/2023] Open
Abstract
Excavatolide C (EXCC) is a bioactive compound derived from the gorgonian octocoral Briareum excavatum, and its anticancer effects are rarely addressed, particularly for bladder cancer. This investigation aimed to explore the potential impacts of EXCC on inhibiting the proliferation of three kinds of bladder cancer cells (5637, BFTC905, and T24). EXCC inhibits bladder cancer cell proliferation based on 48 h ATP assay. This antiproliferation function is validated to be oxidative stress dependent. Cellular and mitochondrial oxidative stresses were upregulated by EXCC, accompanied by depleting glutathione and mitochondrial membrane potential. These antiproliferation and oxidative stress events were suppressed by N-acetylcysteine (NAC), indicating that EXCC has an oxidative stress-regulating function for antiproliferation of bladder cancer cells. Oxidative stress-related responses such as apoptosis, caspase activation, and DNA damage were upregulated by EXCC and reverted by NAC. Taken together, the antiproliferation function of EXCC provides a potential treatment against bladder cancer cells via oxidative stress modulation.
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Affiliation(s)
- Che-Wei Yang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (C.-W.Y.); (C.-H.Y.)
| | - Tsu-Ming Chien
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan; (T.-M.C.); (W.-J.W.)
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
- Department of Urology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Chia-Hung Yen
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (C.-W.Y.); (C.-H.Y.)
| | - Wen-Jeng Wu
- Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan; (T.-M.C.); (W.-J.W.)
- Department of Urology, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan
- Department of Urology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80756, Taiwan
| | - Jyh-Horng Sheu
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- Correspondence: (J.-H.S.); (H.-W.C.); Tel.: +886-7-525-2000 (ext. 5030) (J.-H.S.); +886-7-312-1101 (ext. 2691) (H.-W.C.)
| | - Hsueh-Wei Chang
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Biomedical Science and Environmental Biology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: (J.-H.S.); (H.-W.C.); Tel.: +886-7-525-2000 (ext. 5030) (J.-H.S.); +886-7-312-1101 (ext. 2691) (H.-W.C.)
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12
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Siro G, Pipite A, Christi K, Srinivasan S, Subramani R. Marine Actinomycetes Associated with Stony Corals: A Potential Hotspot for Specialized Metabolites. Microorganisms 2022; 10:microorganisms10071349. [PMID: 35889068 PMCID: PMC9319285 DOI: 10.3390/microorganisms10071349] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 06/29/2022] [Accepted: 07/02/2022] [Indexed: 02/05/2023] Open
Abstract
Microbial secondary metabolites are an important source of antibiotics currently available for combating drug-resistant pathogens. These important secondary metabolites are produced by various microorganisms, including Actinobacteria. Actinobacteria have a colossal genome with a wide array of genes that code for several bioactive metabolites and enzymes. Numerous studies have reported the isolation and screening of millions of strains of actinomycetes from various habitats for specialized metabolites worldwide. Looking at the extent of the importance of actinomycetes in various fields, corals are highlighted as a potential hotspot for untapped secondary metabolites and new bioactive metabolites. Unfortunately, knowledge about the diversity, distribution and biochemistry of marine actinomycetes compared to hard corals is limited. In this review, we aim to summarize the recent knowledge on the isolation, diversity, distribution and discovery of natural compounds from marine actinomycetes associated with hard corals. A total of 11 new species of actinomycetes, representing nine different families of actinomycetes, were recovered from hard corals during the period from 2007 to 2022. In addition, this study examined a total of 13 new compounds produced by five genera of actinomycetes reported from 2017 to 2022 with antibacterial, antifungal and cytotoxic activities. Coral-derived actinomycetes have different mechanisms of action against their competitors.
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Affiliation(s)
- Galana Siro
- School of Agriculture, Geography, Environment, Ocean and Natural Sciences (SAGEONS), The University of the South Pacific, Laucala Campus, Suva, Fiji; (G.S.); (K.C.); (R.S.)
| | - Atanas Pipite
- School of Agriculture, Geography, Environment, Ocean and Natural Sciences (SAGEONS), The University of the South Pacific, Laucala Campus, Suva, Fiji; (G.S.); (K.C.); (R.S.)
- Correspondence: (A.P.); or (S.S.)
| | - Ketan Christi
- School of Agriculture, Geography, Environment, Ocean and Natural Sciences (SAGEONS), The University of the South Pacific, Laucala Campus, Suva, Fiji; (G.S.); (K.C.); (R.S.)
| | - Sathiyaraj Srinivasan
- Department of Bio & Environmental Technology, Division of Environmental & Life Science, College of Natural Science, Seoul Women’s University, 623 Hwarangno, Nowon-gu, Seoul 01797, Korea
- Correspondence: (A.P.); or (S.S.)
| | - Ramesh Subramani
- School of Agriculture, Geography, Environment, Ocean and Natural Sciences (SAGEONS), The University of the South Pacific, Laucala Campus, Suva, Fiji; (G.S.); (K.C.); (R.S.)
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13
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Huang B, Peng S, Liu S, Zhang Y, Wei Y, Xu X, Gao C, Liu Y, Luo X. Isolation, Screening, and Active Metabolites Identification of Anti- Vibrio Fungal Strains Derived From the Beibu Gulf Coral. Front Microbiol 2022; 13:930981. [PMID: 35722281 PMCID: PMC9201449 DOI: 10.3389/fmicb.2022.930981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 05/12/2022] [Indexed: 11/13/2022] Open
Abstract
The Beibu Gulf harbors abundant underexplored marine microbial resources, which are rich in diversified secondary metabolites. The genera Vibrio is a well-known pathogenic bacterium of aquatic animals. In this study, 22 fungal strains were isolated and identified from the Beibu Gulf coral via the serial dilution method and internal transcribed spacer (ITS) sequence analysis, which were further divided into three branches by phylogenetic tree analysis. The crude extracts of them via small-scale fermentation were selected for the screening of inhibitory activity against Vibrio alginalyticus, Vibrio coralliilyticus, Vibrio harveyi, Vibrio parahaemolyticus, Vibrio owensii, and Vibrio shilonii. The results showed that eight fungal extracts displayed anti-Vibrio activity via the filter paper disk assay. Several of them showed strong inhibitory effects. Then, two tetramic acid alkaloids, equisetin (1) and 5'-epiequisetin (2), were identified from Fusarium equiseti BBG10 by bioassay-guided isolation, both of which inhibited the growth of Vibrio spp. with the MIC values of 86-132 μg/ml. The scanning electron microscope results showed that cell membranes of Vibrio became corrugated, distorted or ruptured after treatment with 1 and 2. Taken together, this study provided eight fungal isolates with anti-Vibrio potentials, and two alkaloid-type antibiotics were found with anti-Vibrio effects from the bioactive strain F. equiseti BBG10. Our findings highlight the importance of exploring promising microbes from the Beibu Gulf for the identification of anti-Vibrio for future antibiotic development.
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Affiliation(s)
- Bingyao Huang
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Shuai Peng
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Shifang Liu
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Yanting Zhang
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Yuxiao Wei
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Xinya Xu
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Chenghai Gao
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Yonghong Liu
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
| | - Xiaowei Luo
- Institute of Marine Drugs, Guangxi University of Chinese Medicine, Nanning, China
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14
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Abdelhafez OH, Fahim JR, Rateb ME, Ngwa CJ, Pradel G, Abdelmohsen UR, Desoukey SY, Kamel MS. Cytotoxic potential of Nephthea sp.-derived actinomycetes supported by metabolomics analysis. Nat Prod Res 2022; 36:6464-6469. [PMID: 35175884 DOI: 10.1080/14786419.2022.2039650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Soft corals and associated microorganisms are known to produce leads for anticancer drugs. Keeping this in mind, Nephthea sp.; a Red Sea soft coral was investigated for the first time using the OSMAC approach. Two isolates, Streptomyces sp. UR63 and Micrococcus sp. UR67 were identified. Their extracts revealed the presence of alkaloids, macrolides, quinones, fatty acids and terpenoids. Further comparison through a set of multivariate data analyses revealed their unique chemical profiles. The extracts displayed inhibitory potencies against HepG-2, Caco-2 and MCF-7 tumor cell lines with IC50 values ranging from 11.4 to 38.7 μg/mL when compared with the positive control, doxorubicin. The study not only highlights the cytotoxic potential of soft coral-associated actinomycetes but also shows the advantage of using the OSMAC approach in this regard.
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Affiliation(s)
| | - John Refaat Fahim
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Mostafa E Rateb
- School of Computing, Engineering and Physical Sciences, University of the West of Scotland, Paisley, United Kingdom
| | - Che J Ngwa
- Division of Cellular and Applied Infection Biology, Institute of Zoology, RWTH Aachen University, Aachen, Germany
| | - Gabriele Pradel
- Division of Cellular and Applied Infection Biology, Institute of Zoology, RWTH Aachen University, Aachen, Germany
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, New Minia, Egypt.,Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Samar Yehia Desoukey
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Mohamed Salah Kamel
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, New Minia, Egypt.,Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
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15
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Igarashi Y, Ge Y, Zhou T, Sharma AR, Harunari E, Oku N, Trianto A. Tenacibactins K–M, cytotoxic siderophores from a coral-associated gliding bacterium of the genus Tenacibaculum. Beilstein J Org Chem 2022; 18:110-119. [PMID: 35096180 PMCID: PMC8767563 DOI: 10.3762/bjoc.18.12] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 11/24/2021] [Indexed: 12/21/2022] Open
Abstract
HPLC/DAD-based chemical investigation of a coral-associated gliding bacterium of the genus Tenacibaculum yielded three desferrioxamine-class siderophores, designated tenacibactins K (1), L (2), and M (3). Their chemical structures, comprising repeated cadaverine–succinic acid motifs terminated by a hydroxamic acid functionality, were elucidated by NMR and negative MS/MS experiments. Compounds 1–3 were inactive against bacteria and a yeast but displayed cytotoxicity against 3Y1 rat embryonic fibroblasts and P388 murine leukemia cells at GI50 in submicromolar to micromolar ranges. Their iron-chelating activity was comparable to deferoxamine mesylate.
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Affiliation(s)
- Yasuhiro Igarashi
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Yiwei Ge
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Tao Zhou
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Amit Raj Sharma
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Enjuro Harunari
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Naoya Oku
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Agus Trianto
- Faculty of Fisheries and Marine Sciences, Diponegoro University, Tembalang Campus, St. Prof. Soedarto SH., Semarang 50275, Central Java, Indonesia
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16
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Isolation of an Extract from the Soft Coral Symbiotic Microorganism Salinispora arenicola Exerting Cytoprotective and Anti-Aging Effects. Curr Issues Mol Biol 2021; 44:14-30. [PMID: 35723381 PMCID: PMC8928968 DOI: 10.3390/cimb44010002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 12/04/2021] [Accepted: 12/09/2021] [Indexed: 01/10/2023] Open
Abstract
Cells have developed a highly integrated system responsible for proteome stability, namely the proteostasis network (PN). As loss of proteostasis is a hallmark of aging and age-related diseases, the activation of PN modules can likely extend healthspan. Here, we present data on the bioactivity of an extract (SA223-S2BM) purified from the strain Salinispora arenicola TM223-S2 that was isolated from the soft coral Scleronephthya lewinsohni; this coral was collected at a depth of 65 m from the mesophotic Red Sea ecosystem EAPC (south Eilat, Israel). Treatment of human cells with SA223-S2BM activated proteostatic modules, decreased oxidative load, and conferred protection against oxidative and genotoxic stress. Furthermore, SA223-S2BM enhanced proteasome and lysosomal-cathepsins activities in Drosophila flies and exhibited skin protective effects as evidenced by effective inhibition of the skin aging-related enzymes, elastase and tyrosinase. We suggest that the SA223-S2BM extract constitutes a likely promising source for prioritizing molecules with anti-aging properties.
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17
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Coral holobionts and biotechnology: from Blue Economy to coral reef conservation. Curr Opin Biotechnol 2021; 74:110-121. [PMID: 34861476 DOI: 10.1016/j.copbio.2021.10.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/04/2021] [Accepted: 10/08/2021] [Indexed: 12/28/2022]
Abstract
Corals are of ecological and economic importance, providing habitat for species and contributing to coastal protection, fisheries, and tourism. Their biotechnological potential is also increasingly recognized. Particularly, the production of pharmaceutically interesting compounds by corals and their microbial associates stimulated natural product-based drug discovery. The efficient light distribution by coral skeletons for optimal photosynthesis by algal symbionts has led to 3D-printed bionic corals that may be used to upscale micro-algal cultivation for bioenergy generation. However, corals are under threat from climate change and pollution, and biotechnological approaches to increase their resilience, like 'probiotics' and 'assisted evolution', are being evaluated. In this review, we summarize the recent biotechnological developments related to corals with an emphasis on coral conservation, drug discovery and bioenergy.
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18
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Exploring the Diversity and Biotechnological Potential of Cultured and Uncultured Coral-Associated Bacteria. Microorganisms 2021; 9:microorganisms9112235. [PMID: 34835361 PMCID: PMC8622030 DOI: 10.3390/microorganisms9112235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 10/20/2021] [Accepted: 10/24/2021] [Indexed: 11/17/2022] Open
Abstract
Coral-associated microbes are crucial for the biology of their hosts, contributing to nutrient cycling, adaptation, mitigation of toxic compounds, and biological control of pathogens. Natural products from coral-associated micro-organisms (CAM) may possess unique traits. Despite this, the use of CAM for biotechnological purposes has not yet been adequately explored. Here, we investigated the production of commercially important enzymes by 37 strains of bacteria isolated from the coral species Mussismilia braziliensis, Millepora alcicornis, and Porites astreoides. In-vitro enzymatic assays showed that up to 56% of the isolates produced at least one of the seven enzymes screened (lipase, caseinase, keratinase, cellulase, chitinase, amylase, and gelatinase); one strain, identified as Bacillus amyloliquefaciens produced all these enzymes. Additionally, coral species-specific cultured and uncultured microbial communities were identified. The phylum Firmicutes predominated among the isolates, including the genera Exiguobacterium, Bacillus, and Halomonas, among others. Next-generation sequencing and bacteria culturing produced similar but also complementary data, with certain genera detected only by one or the other method. Our results demonstrate the importance of exploring different coral species as sources of specific micro-organisms of biotechnological and industrial interest, at the same time reinforcing the economic and ecological importance of coral reefs as reservoirs of such diversity.
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19
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Research Progress in Anti-Inflammatory Bioactive Substances Derived from Marine Microorganisms, Sponges, Algae, and Corals. Mar Drugs 2021; 19:md19100572. [PMID: 34677471 PMCID: PMC8538560 DOI: 10.3390/md19100572] [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: 09/12/2021] [Revised: 10/04/2021] [Accepted: 10/10/2021] [Indexed: 12/24/2022] Open
Abstract
Inflammation is the body’s defense reaction in response to stimulations and is the basis of various physiological and pathological processes. However, chronic inflammation is undesirable and closely related to the occurrence and development of diseases. The ocean gives birth to unique and diverse bioactive substances, which have gained special attention and been a focus for anti-inflammatory drug development. So far, numerous promising bioactive substances have been obtained from various marine organisms such as marine bacteria and fungi, sponges, algae, and coral. This review covers 71 bioactive substances described during 2015–2020, including the structures (65 of which), species sources, evaluation models and anti-inflammatory activities of these substances. This review aims to provide some reference for the research progress of marine-organism-derived anti-inflammatory metabolites and give more research impetus for their conversion to novel anti-inflammatory drugs.
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20
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Matulja D, Grbčić P, Bojanić K, Topić-Popović N, Čož-Rakovac R, Laclef S, Šmuc T, Jović O, Marković D, Pavelić SK. Chemical Evaluation, Antioxidant, Antiproliferative, Anti-Inflammatory and Antibacterial Activities of Organic Extract and Semi-Purified Fractions of the Adriatic Sea Fan, Eunicella cavolini. Molecules 2021; 26:molecules26195751. [PMID: 34641295 PMCID: PMC8510138 DOI: 10.3390/molecules26195751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/17/2021] [Accepted: 09/19/2021] [Indexed: 11/25/2022] Open
Abstract
Due to sedentary lifestyle and harsh environmental conditions, gorgonian coral extracts are recognized as a rich source of novel compounds with various biological activities, of interest to the pharmaceutical and cosmetic industries. The presented study aimed to perform chemical screening of organic extracts and semi-purified fractions obtained from the common Adriatic gorgonian, sea fan, Eunicella cavolini (Koch, 1887) and explore its abilities to exert different biological effects in vitro. Qualitative chemical evaluation revealed the presence of several classes of secondary metabolites extended with mass spectrometry analysis and tentative dereplication by using Global Natural Product Social Molecular Networking online platform (GNPS). Furthermore, fractions F4 and F3 showed the highest phenolic (3.28 ± 0.04 mg GAE/g sample) and carotene (23.11 ± 2.48 mg β-CA/g sample) content, respectively. The fraction F3 inhibited 50% of DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate) and ABTS (2,2′-azino-bis (3-ethylbenzthiazolin-6-yl) sulfonic acid) radicals at the concentrations of 767.09 ± 11.57 and 157.16 ± 10.83 µg/mL, respectively. The highest anti-inflammatory potential was exhibited by F2 (IC50 = 198.70 ± 28.77 µg/mL) regarding the inhibition of albumin denaturation and F1 (IC50 = 254.49 ± 49.17 µg/mL) in terms of soybean lipoxygenase inhibition. In addition, the most pronounced antiproliferative effects were observed for all samples (IC50 ranging from 0.82 ± 0.14–231.18 ± 46.13 µg/mL) against several carcinoma cell lines, but also towards non-transformed human fibroblasts pointing to a generally cytotoxic effect. In addition, the antibacterial activity was tested by broth microdilution assay against three human pathogenic bacteria: Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus. The latter was the most affected by fractions F2 and F3. Finally, further purification, isolation and characterization of pure compounds from the most active fractions are under investigation.
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Affiliation(s)
- Dario Matulja
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia; (D.M.); (P.G.)
| | - Petra Grbčić
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia; (D.M.); (P.G.)
| | - Krunoslav Bojanić
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia; (K.B.); (N.T.-P.); (R.Č.-R.); (T.Š.); (O.J.)
| | - Natalija Topić-Popović
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia; (K.B.); (N.T.-P.); (R.Č.-R.); (T.Š.); (O.J.)
| | - Rozelindra Čož-Rakovac
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia; (K.B.); (N.T.-P.); (R.Č.-R.); (T.Š.); (O.J.)
| | - Sylvain Laclef
- Laboratoire de Glycochimie, des Antimicrobiens et des Agroressources (LG2A) UMR CNRS 7378—Institut de Chimie de Picardie FR 3085, Université de Picardie Jules Verne, 33 Rue Saint Leu, 80039 Amiens, France;
| | - Tomislav Šmuc
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia; (K.B.); (N.T.-P.); (R.Č.-R.); (T.Š.); (O.J.)
| | - Ozren Jović
- Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia; (K.B.); (N.T.-P.); (R.Č.-R.); (T.Š.); (O.J.)
| | - Dean Marković
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia; (D.M.); (P.G.)
- Correspondence: (D.M.); (S.K.P.); Tel.: +385-91-500-8676 (D.M.); +385-51-688-266 (S.K.P.)
| | - Sandra Kraljević Pavelić
- Faculty of Health Studies, University of Rijeka, Viktora Cara Emina 5, 51000 Rijeka, Croatia
- Correspondence: (D.M.); (S.K.P.); Tel.: +385-91-500-8676 (D.M.); +385-51-688-266 (S.K.P.)
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21
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Mohamed TA, Elshamy AI, Ibrahim MAA, Atia MAM, Ahmed RF, Ali SK, Mahdy KA, Alshammari SO, Al-Abd AM, Moustafa MF, Farrag ARH, Hegazy MEF. Gastroprotection against Rat Ulcers by Nephthea Sterol Derivative. Biomolecules 2021; 11:1247. [PMID: 34439913 PMCID: PMC8393318 DOI: 10.3390/biom11081247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/19/2021] [Indexed: 12/23/2022] Open
Abstract
Different species belonging to the genus Nephthea (Acyonaceae) are a rich resource for bioactive secondary metabolites. The literature reveals that the gastroprotective effects of marine secondary metabolites have not been comprehensively studied in vivo. Hence, the present investigation aimed to examine and determine the anti-ulcer activity of 4α,24-dimethyl-5α-cholest-8β,18-dihydroxy,22E-en-3β-ol (ST-1) isolated from samples of a Nephthea species. This in vivo study was supported by in silico molecular docking and protein-protein interaction techniques. Oral administration of ST-1 reduced rat stomach ulcers with a concurrent increase in gastric mucosa. Molecular docking calculations against the H+/K+-ATPase transporter showed a higher binding affinity of ST-1, with a docking score value of -9.9 kcal/mol and a pKi value of 59.7 nM, compared to ranitidine (a commercial proton pump inhibitor, which gave values of -6.2 kcal/mol and 27.9 µM, respectively). The combined PEA-reactome analysis results revealed promising evidence of ST-1 potency as an anti-ulcer compound through significant modulation of the gene set controlling the PI3K signaling pathway, which subsequently plays a crucial role in signaling regarding epithelialization and tissue regeneration, tissue repairing and tissue remodeling. These results indicate a probable protective role for ST-1 against ethanol-induced gastric ulcers.
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Affiliation(s)
- Tarik A. Mohamed
- National Research Centre, Chemistry of Medicinal Plants Department, 33 El−Bohouth St., Dokki, Giza 12622, Egypt; (T.A.M.); (S.K.A.); (M.-E.F.H.)
| | - Abdelsamed I. Elshamy
- National Research Centre, Chemistry of Natural Compounds Department, Dokki, Giza 12622, Egypt; (A.I.E.); (R.F.A.)
| | - Mahmoud A. A. Ibrahim
- Computational Chemistry Laboratory, Chemistry Department, Faculty of Science, Minia University, Minia 61519, Egypt;
| | - Mohamed A. M. Atia
- Molecular Genetics and Genome Mapping Laboratory, Genome Mapping Department, Agricultural Genetic Engineering Research Institute (AGERI), Agricultural Research Center (ARC), Giza 12619, Egypt;
| | - Rania F. Ahmed
- National Research Centre, Chemistry of Natural Compounds Department, Dokki, Giza 12622, Egypt; (A.I.E.); (R.F.A.)
| | - Sherin K. Ali
- National Research Centre, Chemistry of Medicinal Plants Department, 33 El−Bohouth St., Dokki, Giza 12622, Egypt; (T.A.M.); (S.K.A.); (M.-E.F.H.)
| | - Karam A. Mahdy
- National Research Centre, Medical Biochemistry Department, 33 El Bohouth St., Dokki, Giza 12622, Egypt;
| | - Shifaa O. Alshammari
- Department of Biology, College of Science, University of Hafr Al Batin, Hafar Al Batin 39524, Saudi Arabia;
| | - Ahmed M. Al-Abd
- Department of Pharmaceutical Sciences, College of Pharmacy & Thumbay Research Institute for Precision Medicine, Gulf Medical University, Ajman 4184, United Arab Emirates
- Pharmacology Department, Medical Division, National Research Centre, Cairo 12622, Egypt
| | - Mahmoud F. Moustafa
- Department of Biology, College of Science, King Khalid University, Abha 9004, Saudi Arabia;
- Department of Botany & Microbiology, Faculty of Science, South Valley University, Qena 83523, Egypt
| | - Abdel Razik H. Farrag
- National Research Centre, Pathology Department, 33 El Bohouth St., Dokki, Giza 12622, Egypt;
| | - Mohamed-Elamir F. Hegazy
- National Research Centre, Chemistry of Medicinal Plants Department, 33 El−Bohouth St., Dokki, Giza 12622, Egypt; (T.A.M.); (S.K.A.); (M.-E.F.H.)
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22
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Yoon J, Yasumoto-Hirose M, Kasai H. Identification and classification of Croceivirga thetidis sp. nov., a marine Flavobacteriaceae isolated from the hard coral Acropora. Antonie van Leeuwenhoek 2021; 114:1407-1416. [PMID: 34251526 DOI: 10.1007/s10482-021-01611-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 06/28/2021] [Indexed: 10/20/2022]
Abstract
A taxonomic investigation using a polyphasic method was conducted to identify a novel marine flavobacterium, designated as DJ-13T, isolated from the hard coral Acropora sp. collected at Okinawa, Japan. Bacterial cells were Gram-stain-negative, yellow-colored, strictly aerobic, rod-shaped, catalase- and oxidase-positive, non-motile, and chemoorganoheterotrophic. The novel isolate grew at NaCl concentrations of 0.5-7%, pH 6.5-9.0, and 15-37 °C. A phylogenetic study on the basis of the 16S rRNA gene sequence revealed that strain DJ-13T belongs to the family Flavobacteriaceae and that it shared the greatest sequence similarity (95.9%) with Croceivirga lutea CSW06T. Strain DJ-13T comprised iso-C17:0 3-OH, iso-C15:0, and iso-C15:1 G as the main (> 10%) cellular fatty acids. Menaquinone-6 (MK-6) was the only respiratory quinone. The assembled draft genome size of strain DJ-13T was 3.71 Mbp with G + C content of 38.7 mol%. The average nucleotide identity (ANI), digital DNA-DNA hybridization (dDDH), and average amino acid identity (AAI) values of DJ-13T and the species of the genus Croceivirga were found to be 74.9-75.5%, 13.4-14.7%, and 68.2-72.4%, respectively. Strain DJ-13T contained phosphatidylethanolamine, two unidentified aminolipids, and five unidentified lipids as polar lipids. From the polyphasic taxonomic results presented, the strain is considered to represent a novel species of the genus Croceivirga for which the name Croceivirga thetidis sp. nov. is proposed. The type strain of C. thetidis sp. nov. is DJ-13T (= KCTC 72790T = NBRC 114252T).
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Affiliation(s)
- Jaewoo Yoon
- College of Pharmacy, Keimyung University, 1095 Dalgubeoldaero, Dalseo-Gu, Daegu, 42601, Republic of Korea.
| | - Mina Yasumoto-Hirose
- Marine Biotechnology Institute, 3-75-1 Heita, Kamaishi, , Iwate, 026-0001, Japan.,Tropical Technology Plus, 12-75 Suzaki, Uruma, Okinawa, 904-2234, Japan
| | - Hiroaki Kasai
- Sanriku Education and Research Center for Marine Biosciences, Kitasato University School of Marine Biosciences, 160-4 Utou, Okirai, Sanriku-cho, Ofunato, Iwate, 022-0101, Japan
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23
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Abdelhafez OH, Fahim JR, Mustafa M, AboulMagd AM, Desoukey SY, Hayallah AM, Kamel MS, Abdelmohsen UR. Natural metabolites from the soft coral Nephthea sp. as potential SARS-CoV-2 main protease inhibitors. Nat Prod Res 2021; 36:2893-2896. [PMID: 34027770 DOI: 10.1080/14786419.2021.1925892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The ongoing spread of SARS-CoV-2 has created a growing need to develop effective antiviral treatments; therefore, this work was undertaken to delve into the natural metabolites of the Red Sea soft coral Nephthea sp. (family Nephtheidae) as a source of potential anti-COVID-19 agents. Overall, a total of 14 structurally diverse minor constituents were isolated and identified from the petroleum ether fraction of Nephthea sp. The characterised compounds were screened and compared for their inhibitory potential against SARS-CoV-2 main protease (Mpro) using Autodock Vina and MOE software. Interestingly, most compounds were able to bind effectively to the active site of Mpro, of which nephthoside monoacetate (1); an acylated tetraprenyltoluquinol glycoside, exhibited the highest binding capacity in both software with comparable interaction energies to the ligand N3 and moderately acceptable drug-likeness properties, which drew attention to the relevance of marine-derived metabolites from Nephthea sp., particularly compound (1), to develop potential SARS-CoV-2 protease inhibitors.
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Affiliation(s)
- Omnia Hesham Abdelhafez
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia, Egypt
| | - John Refaat Fahim
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Muhamad Mustafa
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Deraya University, New Minia, Egypt
| | - Asmaa M AboulMagd
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Nahda University, Beni Suef, Egypt
| | - Samar Yehia Desoukey
- Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Alaa M Hayallah
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Sphinx University, New Assiut, Egypt.,Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Mohamed Salah Kamel
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia, Egypt.,Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
| | - Usama Ramadan Abdelmohsen
- Department of Pharmacognosy, Faculty of Pharmacy, Deraya University, Universities Zone, New Minia, Egypt.,Department of Pharmacognosy, Faculty of Pharmacy, Minia University, Minia, Egypt
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24
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Bocharova EA, Kopytina NI, Slynko ЕЕ. Anti-tumour drugs of marine origin currently at various stages of clinical trials (review). REGULATORY MECHANISMS IN BIOSYSTEMS 2021. [DOI: 10.15421/022136] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Oncological diseases for a long time have remained one of the most significant health problems of modern society, which causes great losses in its labour and vital potential. Contemporary oncology still faces unsolved issues as insufficient efficacy of treatment of progressing and metastatic cancer, chemoresistance, and side-effects of the traditional therapy which lead to disabilities among or death of a high number of patients. Development of new anti-tumour preparations with a broad range of pharmaceutical properties and low toxicity is becoming increasingly relevant every year. The objective of the study was to provide a review of the recent data about anti-tumour preparations of marine origin currently being at various phases of clinical trials in order to present the biological value of marine organisms – producers of cytotoxic compounds, and the perspectives of their use in modern biomedical technologies. Unlike the synthetic oncological preparations, natural compounds are safer, have broader range of cytotoxic activity, can inhibit the processes of tumour development and metastasis, and at the same time have effects on several etiopathogenic links of carcinogenesis. Currently, practical oncology uses 12 anti-tumour preparations of marine origin (Fludarabine, Cytarabine, Midostaurin, Nelarabine, Eribulin mesylate, Brentuximab vedotin, Trabectedin, Plitidepsin, Enfortumab vedotin, Polatuzumab vedotin, Belantamab mafodotin, Lurbinectedin), 27 substances are at different stages of clinical trials. Contemporary approaches to the treatment of oncological diseases are based on targeted methods such as immune and genetic therapies, antibody-drug conjugates, nanoparticles of biopolymers, and metals. All those methods employ bioactive compounds of marine origin. Numerous literature data from recent years indicate heightened attention to the marine pharmacology and the high potential of marine organisms for the biomedicinal and pharmaceutic industries.
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25
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Peng CC, Huang TY, Huang CY, Hwang TL, Sheu JH. Cherbonolides M and N from a Formosan Soft Coral Sarcophyton cherbonnieri. Mar Drugs 2021; 19:260. [PMID: 34062855 PMCID: PMC8170881 DOI: 10.3390/md19050260] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/23/2021] [Accepted: 04/28/2021] [Indexed: 12/24/2022] Open
Abstract
Two new isosarcophine derivatives, cherbonolides M (1) and N (2), were further isolated from a Formosan soft coral Sarcophyton cherbonnieri. The planar structure and relative configuration of both compounds were established by the detailed analysis of the IR, MS, and 1D and 2D NMR data. Further, the absolute configuration of both compounds was determined by the comparison of CD spectra with that of isosarcophine (3). Notably, cherbonolide N (2) possesses the unique cembranoidal scaffold of tetrahydrooxepane with the 12,17-ether linkage fusing with a γ-lactone. In addition, the assay for cytotoxicity of both new compounds revealed that they showed to be noncytotoxic toward the proliferation of A549, DLD-1, and HuCCT-1 cell lines. Moreover, the anti-inflammatory activities of both metabolites were carried out by measuring the N-formyl-methionyl-leucyl-phenylalanine/cytochalasin B (fMLF/CB)-induced generation of superoxide anion and elastase release in the primary human neutrophils. Cherbonolide N (2) was found to reduce the generation of superoxide anion (20.6 ± 6.8%) and the elastase release (30.1 ± 3.3%) in the fMLF/CB-induced human neutrophils at a concentration of 30 μM.
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Affiliation(s)
- Chia-Chi Peng
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; (C.-C.P.); (C.-Y.H.)
| | - Tzu-Yin Huang
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;
| | - Chiung-Yao Huang
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; (C.-C.P.); (C.-Y.H.)
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
- Research Center for Industry of Human Ecology and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Jyh-Horng Sheu
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; (C.-C.P.); (C.-Y.H.)
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
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26
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Abdelhafez OH, Fahim JR, El Masri RR, Salem MA, Desoukey SY, Ahmed S, Kamel MS, Pimentel-Elardo SM, Nodwell JR, Abdelmohsen UR. Chemical and biological studies on the soft coral Nephthea sp. RSC Adv 2021; 11:23654-23663. [PMID: 35479817 PMCID: PMC9036784 DOI: 10.1039/d1ra03045k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/28/2021] [Indexed: 11/29/2022] Open
Abstract
Soft corals belonging to the family Nephtheidae have been appreciated as marine sources of diverse metabolites with promising anticancer potential. In view of that, the current work investigates the anti-proliferative potential of the crude extract, different fractions, and green synthesized silver nanoparticles (AgNPs) of the Red Sea soft coral, Nephthea sp. against a panel of tumor cell lines. The metabolic pool of the soft coral under study was also explored via an LC-HR-ESI-MS metabolomics approach, followed by molecular docking analysis of the characterized metabolites against the target proteins, EGFR, VEGFR, and HER2 (erbB2) that are known to be involved in cancer cell proliferation, growth, and survival. Overall, the n-butanol fraction of Nephthea sp. exhibited the highest inhibitory activities against MCF7 (breast cancer) and A549 (lung cancer) cell lines, with interesting IC50 values of 2.30 ± 0.07 and 3.12 ± 0.10 μg ml−1, respectively, whereas the maximum growth inhibition of HL60 (leukemia) cells was recorded by the total extract (IC50 = 2.78 ± 0.09 μg ml−1). More interestingly, the anti-proliferative potential of the total soft coral extract was evidently improved when packaged in the form of biogenic AgNPs, particularly against A549 and MCF7 tumor cells, showing IC50 values of 0.72 ± 0.06 and 9.32 ± 0.57 μg ml−1, respectively. On the other hand, metabolic profiling of Nephthea sp. resulted in the annotation of structurally diverse terpenoids, some of which displayed considerable binding affinities and molecular interactions with the studied target proteins, suggesting their possible contribution to the anti-proliferative properties of Nephthea sp. via inhibition of tyrosine kinases, especially the EGFR type. Taken together, the present findings highlighted the relevance of Nephthea sp. to future anticancer drug discovery and provided a base for further work on the green synthesis of a range of bioactive NPs from marine soft corals. The cytotoxic potential of the crude extract, different fractions, and green synthesized nanoparticles of the soft coral Nephthea sp. was studied, supported by LC-HR-ESI-MS metabolomics analysis and molecular docking of the dereplicated compounds.![]()
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Affiliation(s)
| | - John Refaat Fahim
- Department of Pharmacognosy
- Faculty of Pharmacy
- Minia University
- 61519 Minia
- Egypt
| | - Ramy R. El Masri
- Department of Pharmaceutical Chemistry
- Faculty of Pharmacy
- October University for Modern Sciences and Arts (MSA)
- Giza
- Egypt
| | - M. Alaraby Salem
- School of Life and Medical Sciences
- University of Hertfordshire hosted by Global Academic Foundation
- Cairo
- Egypt
| | | | - Safwat Ahmed
- Department of Pharmacognosy
- Faculty of Pharmacy
- Suez Canal University
- 41522 Ismailia
- Egypt
| | - Mohamed Salah Kamel
- Department of Pharmacognosy
- Faculty of Pharmacy
- Deraya University
- 61111 New Minia
- Egypt
| | | | - Justin R. Nodwell
- Department of Biochemistry
- University of Toronto
- MaRS Centre West
- Toronto
- Canada
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27
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Huang TY, Huang CY, Chen SR, Weng JR, Tu TH, Cheng YB, Wu SH, Sheu JH. New Hydroquinone Monoterpenoid and Cembranoid-Related Metabolites from the Soft Coral Sarcophyton tenuispiculatum. Mar Drugs 2020; 19:md19010008. [PMID: 33375440 PMCID: PMC7823492 DOI: 10.3390/md19010008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 12/23/2022] Open
Abstract
Chemical investigation of the marine soft coral Sarcophyton tenuispiculatum resulted in the isolation of a 1,4-dihydrobenzoquinone, sarcotenuhydroquinone (1), three new cembranoids, sarcotenusenes A‒C (2‒4), and ten previously reported metabolites 5–14. The chemical structures of all isolated metabolites were determined by detailed spectroscopic analyses. In biological assays, anti-inflammatory, cytotoxic, and peroxisome proliferator-activated receptor γ (PPAR-γ) transcription factor assays of all compounds were performed. None of the isolated compounds were found to exhibit activity in the PPAR-γ transcription factor assay. The anti-inflammatory assays showed that (+)-7α,8β-dihydroxydeepoxysarcophine (13) inhibited the production of IL-1β to 56 ± 1% at a concentration of 30 µM in lipopolysaccharide (LPS)-stimulated J774A.1 macrophage cells. In addition, 1 and 2 were found to exhibit cytotoxicity towards a panel of cancer cell lines.
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Affiliation(s)
- Tzu-Yin Huang
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; (T.-Y.H.); (J.-R.W.)
| | - Chiung-Yao Huang
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (C.-Y.H.); (Y.-B.C.)
| | - Shu-Rong Chen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Jing-Ru Weng
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; (T.-Y.H.); (J.-R.W.)
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (C.-Y.H.); (Y.-B.C.)
| | - Tzu-Hsuan Tu
- Department of Oceanography, National Sun Yat-sen University, Kaohsiung 804, Taiwan;
| | - Yuan-Bin Cheng
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (C.-Y.H.); (Y.-B.C.)
| | - Shih-Hsiung Wu
- Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan;
| | - Jyh-Horng Sheu
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan; (T.-Y.H.); (J.-R.W.)
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (C.-Y.H.); (Y.-B.C.)
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Correspondence: ; Tel.: +886-7-525-2000 (ext. 5030); Fax: +886-7-525-5020
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28
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Garrido A, Atencio LA, Bethancourt R, Bethancourt A, Guzmán H, Gutiérrez M, Durant-Archibold AA. Antibacterial Activity of Volatile Organic Compounds Produced by the Octocoral-Associated Bacteria Bacillus sp. BO53 and Pseudoalteromonas sp. GA327. Antibiotics (Basel) 2020; 9:antibiotics9120923. [PMID: 33353062 PMCID: PMC7766662 DOI: 10.3390/antibiotics9120923] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/10/2020] [Accepted: 12/16/2020] [Indexed: 12/24/2022] Open
Abstract
The present research aimed to evaluate the antibacterial activity of volatile organic compounds (VOCs) produced by octocoral-associated bacteria Bacillus sp. BO53 and Pseudoalteromonas sp. GA327. The volatilome bioactivity of both bacteria species was evaluated against human pathogenic antibiotic-resistant bacteria, methicillin-resistant Staphylococcus aureus, Acinetobacter baumanni, and Pseudomonas aeruginosa. In this regard, the in vitro tests showed that Bacillus sp. BO53 VOCs inhibited the growth of P. aeruginosa and reduced the growth of S. aureus and A. baumanni. Furthermore, Pseudoalteromonas sp. GA327 strongly inhibited the growth of A. baumanni, and P. aeruginosa. VOCs were analyzed by headspace solid-phase microextraction (HS-SPME) joined to gas chromatography-mass spectrometry (GC-MS) methodology. Nineteen VOCs were identified, where 5-acetyl-2-methylpyridine, 2-butanone, and 2-nonanone were the major compounds identified on Bacillus sp. BO53 VOCs; while 1-pentanol, 2-butanone, and butyl formate were the primary volatile compounds detected in Pseudoalteromonas sp. GA327. We proposed that the observed bioactivity is mainly due to the efficient inhibitory biochemical mechanisms of alcohols and ketones upon antibiotic-resistant bacteria. This is the first report which describes the antibacterial activity of VOCs emitted by octocoral-associated bacteria.
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Affiliation(s)
- Anette Garrido
- Center for Biodiversity and Drug Discovery, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama City 0843-01103, Panama; (A.G.); (L.A.A.)
| | - Librada A. Atencio
- Center for Biodiversity and Drug Discovery, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama City 0843-01103, Panama; (A.G.); (L.A.A.)
| | - Rita Bethancourt
- Department of Microbiology and Parasitology, College of Natural, Exact Sciences, and Technology, Universidad de Panama, Panama City 0824-03366, Panama; (R.B.); (A.B.)
| | - Ariadna Bethancourt
- Department of Microbiology and Parasitology, College of Natural, Exact Sciences, and Technology, Universidad de Panama, Panama City 0824-03366, Panama; (R.B.); (A.B.)
| | - Héctor Guzmán
- Smithsonian Tropical Research Institute, Panama City 0843-03092, Panama;
| | - Marcelino Gutiérrez
- Center for Biodiversity and Drug Discovery, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama City 0843-01103, Panama; (A.G.); (L.A.A.)
- Correspondence: (M.G.); (A.A.D.-A.)
| | - Armando A. Durant-Archibold
- Center for Biodiversity and Drug Discovery, Instituto de Investigaciones Científicas y Servicios de Alta Tecnología (INDICASAT AIP), Panama City 0843-01103, Panama; (A.G.); (L.A.A.)
- Department of Biochemistry, College of Natural, Exact Sciences, and Technology, University of Panama, Panama City 0824-03366, Panama
- Correspondence: (M.G.); (A.A.D.-A.)
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29
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Chang TC, Mayfield AB, Fan TY. Culture systems influence the physiological performance of the soft coral Sarcophyton glaucum. Sci Rep 2020; 10:20200. [PMID: 33214591 PMCID: PMC7678846 DOI: 10.1038/s41598-020-77071-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 10/29/2020] [Indexed: 11/09/2022] Open
Abstract
There is an urgent need to develop means of ex situ biobanking and biopreserving corals and other marine organisms whose habitats have been compromised by climate change and other anthropogenic stressors. To optimize laboratory growth of soft corals in a way that could also benefit industry (e.g., aquarium trade), three culture systems were tested herein with Sarcophyton glaucum: (1) a recirculating aquaculture system (RAS) without exogenous biological input (RAS-B), (2) a RAS with "live" rocks and an exogenous food supply (RAS+B), and (3) a simple flow-through system (FTS) featuring partially filtered natural seawater. In each system, the effects of two levels of photosynthetically active radiation (100 or 200 μmol quanta m-2 s-1) and flow velocity (5 or 15 cm s-1) were assessed, and a number of soft coral response variables were measured. All cultured corals survived the multi-month incubation, yet those of the RAS-B grew slowly and even paled; however, once they were fed (RAS-B modified to RAS+B), their pigmentation increased, and their oral discs readily expanded. Light had a more pronounced effect in the RAS-B system, while flow affected certain coral response variables in the FTS tanks; there were few effects of light or flow in the RAS+B system, potentially highlighting the importance of heterotrophy. Unlike the ceramic pedestals of the FTS, those of the RAS+B did not regularly become biofouled by algae. In concert with the aforementioned physiological findings, we therefore recommend RAS+B systems as a superior means of biopreservating and biobanking soft corals.
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Affiliation(s)
- Tai-Chi Chang
- Institute of Marine Biology, National Dong Hwa University, Pingtung, 944, Taiwan
| | - Anderson B Mayfield
- National Museum of Marine Biology and Aquarium, Pingtung, 944, Taiwan.,Atlantic Oceanographic and Meteorological Laboratory, National Oceanic and Atmospheric Administration, Miami, FL, 33149, USA.,Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, 33149, USA
| | - Tung-Yung Fan
- Institute of Marine Biology, National Dong Hwa University, Pingtung, 944, Taiwan. .,National Museum of Marine Biology and Aquarium, Pingtung, 944, Taiwan.
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30
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Peng CC, Huang CY, Ahmed AF, Hwang TL, Sheu JH. Anti-Inflammatory Cembranoids from a Formosa Soft Coral Sarcophyton cherbonnieri. Mar Drugs 2020; 18:md18110573. [PMID: 33228224 PMCID: PMC7699541 DOI: 10.3390/md18110573] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/12/2020] [Accepted: 11/13/2020] [Indexed: 02/07/2023] Open
Abstract
The present investigation on chemical constituents of the soft coral Sarcophyton cherbonnieri resulted in the isolation of seven new cembranoids, cherbonolides F–L (1–7). The chemical structures of 1–7 were determined by spectroscopic methods, including infrared, one- and two-dimensional (1D and 2D) NMR (COSY, HSQC, HMBC, and NOESY), MS experiments, and a chemical reduction of hydroperoxide by triphenylphosphine. The anti-inflammatory activities of 1–7 against neutrophil proinflammatory responses were evaluated by measuring their inhibitory ability toward N-formyl-methionyl-leucyl-phenylalanine/cytochalasin B (fMLF/CB)-induced superoxide anion generation and elastase release in primary human neutrophils. The results showed that all isolates exhibited moderate activities, while cherbonolide G (2) and cherbonolide H (3) displayed a more active effect than others on the inhibition of elastase release (48.2% ± 6.2%) and superoxide anion generation (44.5% ± 4.6%) at 30 µM, respectively.
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Affiliation(s)
- Chia-Chi Peng
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (C.-C.P.); (C.-Y.H.)
| | - Chiung-Yao Huang
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (C.-C.P.); (C.-Y.H.)
| | - Atallah F. Ahmed
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan;
- Research Center for Industry of Human Ecology and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Jyh-Horng Sheu
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan; (C.-C.P.); (C.-Y.H.)
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
- Correspondence: ; Tel.: +886-7-525-2000 (ext. 5030); Fax: +886-7-525-5020
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31
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Abstract
Gorgonian corals are considered as a rich source of secondary metabolites with
unique structural features and biological activities. A large number of novel metabolites
with potent pharmacological properties have been isolated from gorgonian corals. Some of
these compounds have exhibited to possess new mechanisms of action, which hold great
promises as potential lead compounds in future marine drug development. This review aims
to provide an overview of chemical constituents and biological activities of gorgonian corals
from 2015 to December, 2019. Some 145 metabolites, including 16 sesquiterpenoids, 62
diterpenoids, 62 steroids and 5 alkaloids were reported during this period and their pharmacological
activities were investigated. Moreover, the peculiar structure and potential medicinal
value of these new compounds are discussed in this review.
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Affiliation(s)
- Hui Lei
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Peng Jiang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
| | - Dan Zhang
- School of Pharmacy, Southwest Medical University, Luzhou, Sichuan 646000, China
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32
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Modolon F, Barno AR, Villela HDM, Peixoto RS. Ecological and biotechnological importance of secondary metabolites produced by coral-associated bacteria. J Appl Microbiol 2020; 129:1441-1457. [PMID: 32627318 DOI: 10.1111/jam.14766] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/20/2020] [Accepted: 06/28/2020] [Indexed: 12/16/2022]
Abstract
Symbiotic relationships between corals and their associated micro-organisms are essential to maintain host homeostasis. Coral-associated bacteria (CAB) can have different beneficial roles in the coral metaorganism, such as metabolizing essential nutrients for the coral host and protecting the coral from pathogens. Many CAB exert these functions via secondary metabolites, which include antibacterial, antifouling, antitumour, antiparasitic and antiviral compounds. This review describes how analysis of CAB has led to the discovery of secondary metabolites with potential biotechnological applications. The most commonly found types of secondary metabolites, antimicrobial and antibiofilm compounds, are emphasized and described. Recently developed methods that can be applied to enhance the culturing of CAB from shallow-water reefs and the less-studied deep-sea coral reefs are also discussed. Last, we suggest how the combined use of meta-omics and innovative growth-diffusion techniques can vastly improve the discovery of novel compounds in coral environments.
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Affiliation(s)
- F Modolon
- Department of Microbiology, Paulo de Góes Microbiology Institute, Federal University of Rio De Janeiro, Rio de Janeiro, RJ, Brazil
| | - A R Barno
- Department of Microbiology, Paulo de Góes Microbiology Institute, Federal University of Rio De Janeiro, Rio de Janeiro, RJ, Brazil
| | - H D M Villela
- Department of Microbiology, Paulo de Góes Microbiology Institute, Federal University of Rio De Janeiro, Rio de Janeiro, RJ, Brazil
| | - R S Peixoto
- Department of Microbiology, Paulo de Góes Microbiology Institute, Federal University of Rio De Janeiro, Rio de Janeiro, RJ, Brazil.,IMAM-AquaRio - Rio de Janeiro Aquarium Research Center, Rio de Janeiro, RJ, Brazil
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Wu YJ, Wei WC, Dai GF, Su JH, Tseng YH, Tsai TC. Exploring the Mechanism of Flaccidoxide-13-Acetate in Suppressing Cell Metastasis of Hepatocellular Carcinoma. Mar Drugs 2020; 18:md18060314. [PMID: 32549236 PMCID: PMC7344577 DOI: 10.3390/md18060314] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/06/2020] [Accepted: 06/12/2020] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common liver or hepatic cancer, accounting for 80% of all cases. The majority of this cancer mortality is due to metastases, rather than orthotopic tumors. Therefore, the inhibition of tumor metastasis is widely recognized as the key strategy for successful intervention. A cembrane-type diterpene, flaccidoxide-13-acetate, isolated from marine soft coral Sinularia gibberosa, has been reported to have inhibitory effects against RT4 and T24 human bladder cancer invasion and cell migration. In this study, we investigated its suppression effects on tumor growth and metastasis of human HCC, conducting Boyden chamber and Transwell assays using HA22T and HepG2 human HCC cell lines to evaluate invasion and cell migration. We utilized gelatin zymography to determine the enzyme activities of matrix metalloproteinases MMP-2 and MMP-9. We also analyzed the expression levels of MMP-2 and MMP-9. Additionally, assays of tissue inhibitors of metalloproteinase-1/2 (TIMP-1/2), the focal adhesion kinase (FAK)/phosphatidylinositide-3 kinases (PI3K)/Akt/mammalian target of the rapamycin (mTOR) signaling pathway, and the epithelial-mesenchymal transition (EMT) process were performed. We observed that flaccidoxide-13-acetate could potentially inhibit HCC cell migration and invasion. We postulated that, by inhibiting the FAK/PI3K/Akt/mTOR signaling pathway, MMP-2 and MMP-9 expressions were suppressed, resulting in HCC cell metastasis. Flaccidoxide-13-acetate was found to inhibit EMT in HA22T and HepG2 HCC cells. Our study results suggested the potential of flaccidoxide-13-acetate as a chemotherapeutic candidate; however, its clinical application for the management of HCC in humans requires further research.
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Affiliation(s)
- Yu-Jen Wu
- Department of Beauty Science, Meiho University, Pingtung 91202, Taiwan;
- Department of Food and Nutrition, Meiho University, Pingtung 91202, Taiwan
- Yu Jun Biotechnology Co., Ltd., Kaohsiung 807, Taiwan;
| | - Wen-Chi Wei
- National Research Institute of Chinese Medicine, Taipei 112, Taiwan; (W.-C.W.); (Y.-H.T.)
| | - Guo-Fong Dai
- Yu Jun Biotechnology Co., Ltd., Kaohsiung 807, Taiwan;
| | - Jui-Hsin Su
- National Museum of Marine Biology and Aquarium, Pingtung 94450, Taiwan;
| | - Yu-Hwei Tseng
- National Research Institute of Chinese Medicine, Taipei 112, Taiwan; (W.-C.W.); (Y.-H.T.)
| | - Tsung-Chang Tsai
- Antai Medical Care Corporation Antai Tian-Sheng Memorial Hospital, Pingtung 92842, Taiwan
- Correspondence: ; Tel.: +886-8-8329966 (ext. 5523); Fax: +886-8-8329977
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Ma LF, Chen MJ, Liang DE, Shi LM, Ying YM, Shan WG, Li GQ, Zhan ZJ. Streptomyces albogriseolus SY67903 Produces Eunicellin Diterpenoids Structurally Similar to Terpenes of the Gorgonian Muricella sibogae, the Bacterial Source. JOURNAL OF NATURAL PRODUCTS 2020; 83:1641-1645. [PMID: 32367724 DOI: 10.1021/acs.jnatprod.0c00147] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Microeunicellols A (1) and B (2), two undescribed eunicellin diterpenoids, were isolated from the culture of a bacterial symbiont, Streptomyces albogriseolus SY67903. Their structures, including absolute configurations revealed by spectroscopic data and single-crystal X-ray diffraction analysis, are closely related with the diterpenoids from its host, a South China Sea gorgonian, Muricella sibogae. This is the first report of eunicellin diterpenoids, commonly coral-derived, from a bacterial symbiont of coral. The chemical metabolic relationship between the bacterium and its host is discussed. Biological evaluation revealed that compound 1 possessed cytotoxicities against several human cancer cell lines.
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Affiliation(s)
- Lie-Feng Ma
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
- Zhejiang Xinguang Pharmaceutical Limited Liability Company, Shaoxing 312400, People's Republic of China
| | - Meng-Jia Chen
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Dong-E Liang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Lin-Mei Shi
- Lishui Technology College, Lishui 323000, People's Republic of China
| | - You-Min Ying
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Wei-Guang Shan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Guo-Qiang Li
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Zha-Jun Zhan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
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Karim MRU, Harunari E, Oku N, Akasaka K, Igarashi Y. Bulbimidazoles A-C, Antimicrobial and Cytotoxic Alkanoyl Imidazoles from a Marine Gammaproteobacterium Microbulbifer Species. JOURNAL OF NATURAL PRODUCTS 2020; 83:1295-1299. [PMID: 32191468 DOI: 10.1021/acs.jnatprod.0c00082] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Three new alkanoyl imidazoles, designated bulbimidazoles A-C (1-3), were found from the culture extract of the gammaproteobacterium Microbulbifer sp. DC3-6 isolated from a stony coral of the genus Tubastraea. The absolute configuration of the anteiso-methyl substitution in 1 was established to be a mixture of (R)- and (S)-configurations in a ratio of 9:91 by applying the Ohrui-Akasaka method. Compounds 1-3 displayed unique broad-spectrum antimicrobial activity against Gram-positive and -negative bacteria and fungi with MICs ranging from 0.78 to 12.5 μg/mL. They also exhibited cytotoxicity toward P388 murine leukemia cells with IC50 in the micromolar range.
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Affiliation(s)
- Md Rokon Ul Karim
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Enjuro Harunari
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Naoya Oku
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
| | - Kazuaki Akasaka
- Shokei Gakuin University, 4-10-1 Yurigaoka, Natori, Miyagi 981-1295, Japan
| | - Yasuhiro Igarashi
- Biotechnology Research Center, Toyama Prefectural University, Imizu, Toyama 939-0398, Japan
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HPLC-DAD-Guided Isolation of Diversified Chaetoglobosins from the Coral-Associated Fungus Chaetomium globosum C2F17. Molecules 2020; 25:molecules25051237. [PMID: 32182966 PMCID: PMC7179451 DOI: 10.3390/molecules25051237] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/06/2020] [Accepted: 03/07/2020] [Indexed: 01/05/2023] Open
Abstract
Cytochalasans have continuously aroused considerable attention among the chemistry and pharmacology communities due to their structural complexities and pharmacological significances. Sixteen structurally diverse chaetoglobosins, 10-(indol-3-yl)-[13]cytochalasans, including a new one, 6-O-methyl-chaetoglobosin Q (1), were isolated from the coral-associated fungus Chaetomium globosum C2F17. Their structures were accomplished by extensive spectroscopic analysis combined with single-crystal X-ray crystallography and ECD calculations. Meanwhile, the structures and absolute configurations of the previously reported compounds 6, 12, and 13 were confirmed by single-crystal X-ray analysis for the first time. Chaetoglobosins E (6) and Fex (11) showed significant cytotoxicity against a panel of cancer cell lines, K562, A549, Huh7, H1975, MCF-7, U937, BGC823, HL60, Hela, and MOLT-4, with the IC50 values ranging from 1.4 μM to 9.2 μM.
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