1
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Vu Luu P, Minh Nguyen H, Minh Phan P, Duy Vo A, Ton-Nu HL. Testusterol, a new sterol of the sponge species Xestospongia testudinaria from Phu Quoc island, Vietnam. Nat Prod Res 2024:1-9. [PMID: 38600838 DOI: 10.1080/14786419.2024.2340757] [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: 08/10/2023] [Accepted: 03/31/2024] [Indexed: 04/12/2024]
Abstract
A new sterol, named testusterol (1), and five known compounds (2-6) were isolated from the n-hexane and dichloromethane extracts of the sponge species Xestospongia testudinaria. Their chemical structures were elucidated based on extensive spectroscopic analyses (1D, 2D NMR, ESIMS and HRESIMS) and comparison with published data. The results of in vitro test (utilizing brine shrimp Artemia salina LEACH) showed that three extracts ethanol, dichloromethane, and ethanol/water, significantly inhibited Artemia salina with LC50 values ranging from 6.09 to 16.83 µg/mL. Remarkably, the new compound 1 exhibited potent inhibition against both Gram-positive (Staphyloccocus aureus, Bacillus subtilis, Lactobacillus fermentum), and Gram-negative (Escherichia coli, Salmonella enterica, Pseudomonas aeruginosa) bacteria species, with IC50 values of less than 12.0 nM and MIC ranging from 4.70 to 75.23 nM as determined by the broth-microdilution assay.
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Affiliation(s)
- Phuong Vu Luu
- Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Hien Minh Nguyen
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Phuc Minh Phan
- Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - An Duy Vo
- Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
| | - Huong Lien Ton-Nu
- Department of Chemistry, College of Natural Sciences, Can Tho University, Can Tho, Vietnam
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2
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Fauziah F, Ali H, Ilmiawati C, Ariyanto EF, Bakhtra DDA, Mita DS, Syafni N, Handayani D. Non-monotonic dose-response of di-(2-ethylhexyl) phthalate isolated from Penicillium citrinum XT6 on adipogenesis and expression of PPARγ and GLUT4 in 3T3-L1 adipocytes. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2023; 20:804-813. [PMID: 37474486 DOI: 10.1515/jcim-2023-0137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 07/01/2023] [Indexed: 07/22/2023]
Abstract
OBJECTIVES Adipogenesis is the fat cell formation process regulated by peroxisome proliferator-activated receptors (PPARγ). The insulin-responsive glucose transporter 4 (GLUT4) has a major role in glucose uptake and metabolism in insulin target tissues (i.e., adipose and muscle cells). The interplay between PPARγ and GLUT4 is essential for proper glucose homeostasis. This study aimed to isolate, elucidate, and investigate the effect of an isolated compound from Penicillium citrinum XT6 on adipogenesis, PPARγ, and GLUT4 expression in 3T3-L1 adipocytes. METHODS The isolated compound was determined by analyzing spectroscopic data (LC-MS, FT-IR, Spectrophotometry UV-Vis, and NMR). The adipogenesis activity of the isolated compound in 3T3-L1 cells was determined by the Oil Red O staining method. RT-PCR was used to analyze the gene expression of PPARγ and GLUT4. RESULTS Di-(2-ethylhexyl)-phthalate (DEHP) was the isolated compound from P.citrinum XT6. The results revealed adipogenesis stimulation and inhibition, as well as PPARγ and GLUT4 expressions. CONCLUSIONS DEHP showed a non-monotonic dose-response (NMDR) effect on adipogenesis and PPARγ and GLUT4 expression. It is the first study that reveals DEHP's NMDR effects on lipid and glucose metabolism in adipocytes.
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Affiliation(s)
- Fitra Fauziah
- Doctoral Program, Graduate School of Biomedical Science, Faculty of Medicine, Universitas Andalas, Padang, Indonesia
- School of Pharmaceutical Science Padang (STIFARM Padang), Padang, Indonesia
| | - Hirowati Ali
- Department of Biochemistry, Undergraduate Program of Medicine, Faculty of Medicine, Universitas Andalas, Padang, Indonesia
- Biomedical Laboratory, Center for Integrative Biomedical Research, Faculty of Medicine, Universitas Andalas, Padang, Indonesia
| | - Cimi Ilmiawati
- Department of Pharmacology, Undergraduate Program of Medicine, Faculty of Medicine, Universitas Andalas, Padang, Indonesia
| | - Eko Fuji Ariyanto
- Division of Biochemistry and Molecular Biology, Department of Biomedical Sciences, Faculty of Medicine, Universitas Padjadjaran, Sumedang, Indonesia
- Research Center for Medical Genetics, Faculty of Medicine, Universitas Padjadjaran, Bandung, Indonesia
| | | | | | - Nova Syafni
- Laboratory of Sumatran Biota/Faculty of Pharmacy, Universitas Andalas, Padang, Indonesia
| | - Dian Handayani
- Laboratory of Sumatran Biota/Faculty of Pharmacy, Universitas Andalas, Padang, Indonesia
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3
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Metabolites and Bioactivity of the Marine Xestospongia Sponges (Porifera, Demospongiae, Haplosclerida) of Southeast Asian Waters. Biomolecules 2023; 13:biom13030484. [PMID: 36979419 PMCID: PMC10046039 DOI: 10.3390/biom13030484] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
Sponges are aquatic, spineless organisms that belong to the phylum Porifera. They come in three primary classes: Hexactinellidae, Demospongiae, and Calcarea. The Demospongiae class is the most dominant, making up over 90% of sponge species. One of the most widely studied genera within the Demospongiae class is Xestospongia, which is found across Southeast Asian waters. This genus is of particular interest due to the production of numerous primary and secondary metabolites with a wide range of biological potentials. In the current review, the antioxidant, anticancer, anti-inflammatory, antibacterial, antiviral, antiparasitic, and cytotoxic properties of metabolites from several varieties of Southeast Asian Xestospongia spp. were discussed. A total of 40 metabolites of various natures, including alkaloids, fatty acids, steroids, and quinones, were highlighted in X. bergquistia, X. testudinaria, X. muta, X. exigua, X. ashmorica and X. vansoesti. The review aimed to display the bioactivity of Xestospongia metabolites and their potential for use in the pharmaceutical sector. Further research is needed to fully understand their bioactivities.
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4
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Magadmi R, Borouk K, Youssef DTA, Shaala LA, Alrafiah AR, Shaik RA, Alharthi SE. Neuroprotective Effect of Red Sea Marine Sponge Xestospongia testudinaria Extract Using In Vitro and In Vivo Diabetic Peripheral Neuropathy Models. Pharmaceuticals (Basel) 2022; 15:1309. [PMID: 36355482 PMCID: PMC9693000 DOI: 10.3390/ph15111309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/17/2022] [Accepted: 10/20/2022] [Indexed: 10/13/2023] Open
Abstract
Diabetic peripheral neuropathy (DPN) is a common complication of diabetes. Oxidative stress plays an important role in the pathophysiology of DPN. Red Sea marine sponge Xestospongia testudinaria extract has a promising neuroprotective effect, presumably owing to its antioxidant and anti-inflammatory properties. Thus, this study aimed to investigate the neuroprotective effect of the sponge X. testudinaria extract on in vitro and in vivo models of DPN. Mice dorsal root ganglia (DRG) were cultured with high glucose (HG) media and used as an in vitro model of DPN. Some of the DRGs were pre-treated with 2 mg/mL of X. testudinaria. The X. testudinaria extract significantly improved the HG-induced decreased neuronal viability and the neurite length. It improved the oxidative stress biomarkers in DRG cultures. The DPN model was induced in vivo by an injection of streptozotocin at a dose of 150 mg/kg in mice. After 35 days, 0.75 mg/kg of the X. testudinaria extract improved the hot hyperalgesia and the DRG histology. Although the sponge extract did not reduce hyperglycemia, it ameliorated the oxidative stress markers and pro-inflammatory markers in the DRG. In conclusion, the current study demonstrates the neuroprotective effect of Red Sea sponge X. testudinaria extract against experimentally induced DPN through its antioxidant and anti-inflammatory mechanisms.
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Affiliation(s)
- Rania Magadmi
- Pharmacology Department, Faculty of Medicine, King Abdulaziz University, Jeddah 22254, Saudi Arabia
| | - Kariman Borouk
- Pharmacology Department, Faculty of Medicine, King Abdulaziz University, Jeddah 22254, Saudi Arabia
| | - Diaa T. A. Youssef
- Department of Natural Products, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Natural Products Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Lamiaa A. Shaala
- Natural Products Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Suez Canal University Hospital, Suez Canal University, Ismailia 41522, Egypt
| | - Aziza R. Alrafiah
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Rasheed A. Shaik
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Sameer E. Alharthi
- Pharmacology Department, Faculty of Medicine, King Abdulaziz University, Jeddah 22254, Saudi Arabia
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5
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Fauziah F, Ali H, Ilmiawati C, Bakhtra D, Agustin Z, Handayani D. Inhibitory Activity of α-Glucosidase by the Extract and Fraction of Marine Sponge-Derived Fungus Penicillium citrinum Xt6. Open Access Maced J Med Sci 2022. [DOI: 10.3889/oamjms.2022.10167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Diabetes mellitus is a metabolic condition characterized by high blood glucose levels due to insufficient insulin secretion or activity. Diabetes treatment may include inhibiting carbohydrate breakdown enzymes like α-glucosidase. Chemical compounds of the marine-derived fungus have the potential to inhibit α-glucosidase and, thus, could be used in therapy. Marine sponge-derived fungus lives in a colony on the tissues of living things. In the marine sponge Xestospongia testudinaria DD-01, there is a colony of the fungus Penicillium citrinum Xt6. P. citrinum Xt6 has been reported to reduce blood glucose levels in alloxan-induced diabetic mice.
AIM: This study aimed to investigate the inhibitory activity of α-glucosidase by the extracts and fractions of marine-derived fungus P. citrinum Xt6.
MATERIALS AND METHODS: The study was carried out in vitro using p-nitrophenyl-α-D-glucopyranoside (PNPG) substrate and α-glucosidase enzyme from Saccharomyces cerevisiae. ELISA was used to measuring the enzyme’s inhibition activity at the wavelength of 405 nm. Acarbose was used as the standard drug, which inhibits the activity of α-glucosidase.
RESULTS: Inhibitory concentration (IC50) value of ethyl acetate extract was 37.39 μg/mL, methanol fraction was 60.01 μg/mL, n-hexane fraction was 75.45 μg/mL, and acarbose was 124.39 g/mL.
CONCLUSION: It can be concluded that the extract and fraction of marine-derived fungus P. citrinum inhibit α-glucosidase activity. P. citrinum could be developed into an antidiabetic agent.
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6
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Susana SR, Salvador-Reyes LA. Anti-Inflammatory Activity of Monosubstituted Xestoquinone Analogues from the Marine Sponge Neopetrosia compacta. Antioxidants (Basel) 2022; 11:antiox11040607. [PMID: 35453294 PMCID: PMC9028180 DOI: 10.3390/antiox11040607] [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: 01/25/2022] [Revised: 03/04/2022] [Accepted: 03/16/2022] [Indexed: 02/01/2023] Open
Abstract
Chronic inflammation is recognized as a contributor to multiple chronic diseases, such as cancer, cardiovascular, and autoimmune disorders. Here, a natural products-initiated discovery of anti-inflammatory agents from marine sponges was undertaken. From the screening of 231 crude extracts, a total of 30 extracts showed anti-inflammatory activity with no direct cytotoxic effects at 50 μg/mL on RAW 264.7 (ATCC®TIB-71™) murine macrophage cells stimulated with 1 μg/mL lipopolysaccharide (LPS). Bioactivity-guided purification of the anti-inflammatory extract from the sponge Neopetrosia compacta led to the isolation of xestoquinone (1), adociaquinone B (2), adociaquinone A (3), 14-hydroxymethylxestoquinone (4), 15-hydroxymethylxestoquinone (5), and an inseparable 2:1 mixture of 14-methoxyxestoquinone and 15-methoxyxestoquinone (6). Compounds 1–6 caused a concentration-dependent reduction of nitric oxide (NO) production in LPS-stimulated RAW 264.7 cells, with 4–6 having low micromolar IC50 and acceptable selectivity index. Gene expression analysis using qRT-PCR showed that 1, 5, and 6 downregulated Il1b and Nos2 expression by 2.1- to 14.8-fold relative to the solvent control at 10 μM. Xestoquinone (1) and monosubstituted analogues (4–6), but not the disubstituted adociaquinones (2 and 3), caused Nrf2 activation in a luciferase reporter MCF7 stable cells. Compounds 5 and 6 caused a modest increase in Nqo1 gene expression at 10 μM. The anti-inflammatory activity of xestoquinone (1) and monosubstituted analogues (4–6) may, in part, be mediated by Nrf2 activation, leading to attenuation of inflammatory mediators such as IL-1β and NOS2.
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7
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Bayona LM, Kim MS, Swierts T, Hwang GS, de Voogd NJ, Choi YH. Metabolic variation in Caribbean giant barrel sponges: Influence of age and sea-depth. MARINE ENVIRONMENTAL RESEARCH 2021; 172:105503. [PMID: 34673313 DOI: 10.1016/j.marenvres.2021.105503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 10/07/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
The biochemical differentiation of widely distributed long-living marine organisms according to their age or the depth of waters in which they grow is an intriguing topic in marine biology. Especially sessile life forms, such as sponges, could be expected to actively regulate biological processes and interactions with their environment through chemical signals in a multidimensional manner. In recent years, the development of chemical profiling methods such as metabolomics provided an approach that has encouraged the investigation of the chemical interactions of these organisms. In this study, LC-MS based metabolomics followed by Feature-based molecular networking (FBMN) was used to explore the effects of both biotic and environmental factors on the metabolome of giant barrel sponges, chosen as model organisms as they are distributed throughout a wide range of sea-depths. This allowed the identification of differences in the metabolic composition of the sponges related to their age and depth.
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Affiliation(s)
- Lina M Bayona
- Natural Products Laboratory, Institute of Biology, Leiden University, 2333 BE, Leiden, the Netherlands.
| | - Min-Sun Kim
- Food Analysis Research Center, Korea Food Research Institute, Wanju, South Korea
| | - Thomas Swierts
- Naturalis Biodiversity Center, Marine Biodiversity, 2333 CR, Leiden, the Netherlands
| | - Geum-Sook Hwang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul, South Korea
| | - Nicole J de Voogd
- Naturalis Biodiversity Center, Marine Biodiversity, 2333 CR, Leiden, the Netherlands; Institute of Environmental Sciences, Leiden University, 2333 CC, Leiden, the Netherlands
| | - Young Hae Choi
- Natural Products Laboratory, Institute of Biology, Leiden University, 2333 BE, Leiden, the Netherlands; College of Pharmacy, Kyung Hee University, 130, Seoul, South Korea
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8
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Meng Z, Spohr SM, Tobegen S, Farès C, Fürstner A. A Unified Approach to Polycyclic Alkaloids of the Ingenamine Estate: Total Syntheses of Keramaphidin B, Ingenamine, and Nominal Njaoamine I. J Am Chem Soc 2021; 143:14402-14414. [PMID: 34448391 PMCID: PMC8431342 DOI: 10.1021/jacs.1c07955] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Many
polycyclic marine
alkaloids are thought to derive from partly
reduced macrocyclic alkylpyridine derivatives via a transannular Diels–Alder
reaction that forms their common etheno-bridged diaza-decaline core
(“Baldwin–Whitehead hypothesis”). Rather than
trying to emulate this biosynthesis pathway, a route to these natural
products following purely chemical logic was pursued. Specifically,
a Michael/Michael addition cascade provided rapid access to this conspicuous
tricyclic scaffold and allowed different handles to be introduced
at the bridgehead quarternary center. This flexibility opened opportunities
for the formation of the enveloping medium-sized and macrocyclic rings.
Ring closing alkyne metathesis (RCAM) proved most reliable and became
a recurrent theme en route to keramaphidin B, ingenamine, xestocyclamine
A, and nominal njaoamine I (the structure of which had to be corrected
in the aftermath of the synthesis). Best results were obtained with
molybdenum alkylidyne catalysts endowed with (tripodal) silanolate
ligands, which proved fully operative in the presence of tertiary
amines, quinoline, and other Lewis basic sites. RCAM was successfully
interlinked with macrolactamization, an intricate hydroboration/protonation/alkyl-Suzuki
coupling sequence, or ring closing olefin metathesis (RCM) for the
closure of the second lateral ring; the use of RCM for the formation
of an 11-membered cycle is particularly noteworthy. Equally rare are
RCM reactions that leave a pre-existing triple bond untouched, as
the standard ruthenium catalysts are usually indiscriminative vis-à-vis
the different π-bonds. Of arguably highest significance, however,
is the use of two consecutive or even concurrent RCAM reactions en
route to nominal njaoamine I as the arguably most complex of the chosen
targets.
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Affiliation(s)
- Zhanchao Meng
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Simon M Spohr
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Sandra Tobegen
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Christophe Farès
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
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9
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Galitz A, Nakao Y, Schupp PJ, Wörheide G, Erpenbeck D. A Soft Spot for Chemistry-Current Taxonomic and Evolutionary Implications of Sponge Secondary Metabolite Distribution. Mar Drugs 2021; 19:448. [PMID: 34436287 PMCID: PMC8398655 DOI: 10.3390/md19080448] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 12/17/2022] Open
Abstract
Marine sponges are the most prolific marine sources for discovery of novel bioactive compounds. Sponge secondary metabolites are sought-after for their potential in pharmaceutical applications, and in the past, they were also used as taxonomic markers alongside the difficult and homoplasy-prone sponge morphology for species delineation (chemotaxonomy). The understanding of phylogenetic distribution and distinctiveness of metabolites to sponge lineages is pivotal to reveal pathways and evolution of compound production in sponges. This benefits the discovery rate and yield of bioprospecting for novel marine natural products by identifying lineages with high potential of being new sources of valuable sponge compounds. In this review, we summarize the current biochemical data on sponges and compare the metabolite distribution against a sponge phylogeny. We assess compound specificity to lineages, potential convergences, and suitability as diagnostic phylogenetic markers. Our study finds compound distribution corroborating current (molecular) phylogenetic hypotheses, which include yet unaccepted polyphyly of several demosponge orders and families. Likewise, several compounds and compound groups display a high degree of lineage specificity, which suggests homologous biosynthetic pathways among their taxa, which identifies yet unstudied species of this lineage as promising bioprospecting targets.
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Affiliation(s)
- Adrian Galitz
- Department of Earth and Environmental Sciences, Palaeontology & Geobiology, Ludwig-Maximilians-Universität München, 80333 Munich, Germany; (A.G.); (G.W.)
| | - Yoichi Nakao
- Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo 169-8555, Japan;
| | - Peter J. Schupp
- Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl-von-Ossietzky University Oldenburg, 26111 Wilhelmshaven, Germany;
- Helmholtz Institute for Functional Marine Biodiversity, University of Oldenburg (HIFMB), 26129 Oldenburg, Germany
| | - Gert Wörheide
- Department of Earth and Environmental Sciences, Palaeontology & Geobiology, Ludwig-Maximilians-Universität München, 80333 Munich, Germany; (A.G.); (G.W.)
- GeoBio-Center, Ludwig-Maximilians-Universität München, 80333 Munich, Germany
- SNSB-Bavarian State Collection of Palaeontology and Geology, 80333 Munich, Germany
| | - Dirk Erpenbeck
- Department of Earth and Environmental Sciences, Palaeontology & Geobiology, Ludwig-Maximilians-Universität München, 80333 Munich, Germany; (A.G.); (G.W.)
- GeoBio-Center, Ludwig-Maximilians-Universität München, 80333 Munich, Germany
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10
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Lu XL, Qiu Y, Yang B, He H, Gao S. Asymmetric total synthesis of (+)-xestoquinone and (+)-adociaquinones A and B. Chem Sci 2021; 12:4747-4752. [PMID: 34168753 PMCID: PMC8179641 DOI: 10.1039/d0sc07089k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The asymmetric total synthesis of (+)-xestoquinone and (+)-adociaquinones A and B was achieved in 6–7 steps using an easily accessible meso-cyclohexadienone derivative. The [6,6]-bicyclic decalin B–C ring and the all-carbon quaternary stereocenter at C-6 were prepared via a desymmetric intramolecular Michael reaction with up to 97% ee. The naphthalene diol D–E ring was constructed through a sequence of Ti(Oi-Pr)4-promoted photoenolization/Diels–Alder, dehydration, and aromatization reactions. This asymmetric strategy provides a scalable route to prepare target molecules and their derivatives for further biological studies. The asymmetric total synthesis of (+)-xestoquinone and (+)-adociaquinones A and B was achieved in 6–7 steps using an easily accessible meso-cyclohexadienone derivative.![]()
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Affiliation(s)
- Xiao-Long Lu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Yuanyou Qiu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Baochao Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Haibing He
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University 3663N Zhongshan Road Shanghai 200062 China .,Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University 3663N Zhongshan Road Shanghai 200062 China
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11
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Meng Z, Fürstner A. Total Synthesis Provides Strong Evidence: Xestocyclamine A is the Enantiomer of Ingenamine. J Am Chem Soc 2020; 142:11703-11708. [PMID: 32544329 PMCID: PMC7467676 DOI: 10.1021/jacs.0c05347] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
![]()
Xestocyclamine
A ((−)-1) is featured prominently
in a biosynthesis pathway leading to a large family of polycyclic
alkaloids. The first total synthesis now proves that the structure
of this compound had originally been misassigned. The route to (−)-1 is based on a double Michael addition for the formation
of the bridged diazadecalin core and a palladium-catalyzed decarboxylative
allylation to install the quaternary bridgehead center. Ring-closing
alkyne metathesis allowed a 13-membered cycloalkyne to be forged,
which was selectively reduced during an involved sequence of hydroboration/selective
protodeborylation/alkyl-Suzuki coupling used to close the 11-membered
ring. Crystallographic data prove the identity of synthetic (−)-1 with nominal xestocyclamine, but the spectra differ from
those of the authentic alkaloid. To clarify the point, the synthesis
was redirected toward ingenamine (3), which is supposedly
a positional isomer of 1. The recorded data confirm the
assignment of this particular natural product and strongly suggest
that xestocyclamine A is in fact the enantiomer of ingenamine (+)-3.
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Affiliation(s)
- Zhanchao Meng
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
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12
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Bayona LM, van Leeuwen G, Erol Ö, Swierts T, van der Ent E, de Voogd NJ, Choi YH. Influence of Geographical Location on the Metabolic Production of Giant Barrel Sponges ( Xestospongia spp.) Revealed by Metabolomics Tools. ACS OMEGA 2020; 5:12398-12408. [PMID: 32548424 PMCID: PMC7271412 DOI: 10.1021/acsomega.0c01151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
Despite their high therapeutic potential, only a limited number of approved drugs originate from marine natural products. A possible reason for this is their broad metabolic variability related to the environment, which can cause reproducibility issues. Consequently, a further understanding of environmental factors influencing the production of metabolites is required. Giant barrel sponges, Xestospongia spp., are a source of many new compounds and are found in a broad geographical range. In this study, the relationship between the metabolome and the geographical location of sponges within the genus Xestospongia spp. was investigated. One hundred and thirty-nine specimens of giant barrel sponges (Xestospongia spp.) collected in four locations, Martinique, Curaçao, Taiwan, and Tanzania, were studied using a multiplatform metabolomics methodology (nuclear magnetic resonance spectroscopy and liquid chromatography-mass spectrometry). A clear grouping of the collected samples according to their location was shown. Metabolomics analysis revealed that sterols and various fatty acids, including polyoxygenated and brominated derivatives, were related to the differences in locations. To explore the relationship between observed metabolic changes and their bioactivity, antibacterial activity was assessed against Escherichia coli and Staphylococcus aureus. The activity was found to correlate with brominated fatty acids. These were isolated and identified as (9E,17E)-18-bromooctadeca-9,17-dien-5,7,15-triynoic acid (1), xestospongic acid (2), (7E,13E,15Z)-14,16-dibromohexadeca-7,13,15-trien-5-ynoic acid (3), and two previously unreported compounds.
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Affiliation(s)
- Lina M. Bayona
- Natural Products
Laboratory, Institute of Biology, Leiden
University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Gemma van Leeuwen
- Natural Products
Laboratory, Institute of Biology, Leiden
University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Özlem Erol
- Natural Products
Laboratory, Institute of Biology, Leiden
University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Thomas Swierts
- Naturalis
Biodiversity Center, Marine Biodiversity, Darwinweg 2, 2333 CR Leiden, The Netherlands
- Institute
of Environmental Sciences, Leiden University, Einsteinweg 2, 2333 CC Leiden, The Netherlands
| | - Esther van der Ent
- Naturalis
Biodiversity Center, Marine Biodiversity, Darwinweg 2, 2333 CR Leiden, The Netherlands
- Institute
of Environmental Sciences, Leiden University, Einsteinweg 2, 2333 CC Leiden, The Netherlands
| | - Nicole J. de Voogd
- Naturalis
Biodiversity Center, Marine Biodiversity, Darwinweg 2, 2333 CR Leiden, The Netherlands
- Institute
of Environmental Sciences, Leiden University, Einsteinweg 2, 2333 CC Leiden, The Netherlands
| | - Young Hae Choi
- Natural Products
Laboratory, Institute of Biology, Leiden
University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
- College
of Pharmacy, Kyung Hee University, Hoegi-dong 1, Dongdaemun-gu, 02447 Seoul, Republic
of Korea
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13
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Cultivation of Sponge-Associated Bacteria from Agelas sventres and Xestospongia muta Collected from Different Depths. Mar Drugs 2019; 17:md17100578. [PMID: 31614540 PMCID: PMC6836257 DOI: 10.3390/md17100578] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/23/2019] [Accepted: 10/05/2019] [Indexed: 01/15/2023] Open
Abstract
Sponge-associated bacteria have been mostly cultured from shallow water (≤30 m) sponges, whereas only few studies targeted specimens from below 30 m. This study assessed the cultivability of bacteria from two marine sponges Xestospongia muta and Agelas sventres collected from shallow (<30 m), upper mesophotic (30–60 m), and lower mesophotic (60–90 m) reefs. Sponge-associated bacteria were cultivated on six different media, and replicate plates were used to pick individual colonies or to recover the entire biomass. Prokaryotic community analysis was conducted using Illumina MiSeq sequencing of 16S rRNA gene amplicons. A total of 144 bacterial isolates were picked following a colony morphology coding scheme and subsequently identified by 16S rRNA gene sequence analysis. Sponge individuals at each depth-range harboured specific cultivable bacteria that were not retrieved from specimens collected at other depths. However, there were substantial differences in the number of colonies obtained for replicate sponges of the same species. In addition, source of inoculum and cultivation medium had more impact on the cultured prokaryotic community than sample collection depth. This suggests that the “plate count anomaly” is larger than differences in sponge-associated prokaryotic community composition related to depth.
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14
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Villegas-Plazas M, Wos-Oxley ML, Sanchez JA, Pieper DH, Thomas OP, Junca H. Variations in Microbial Diversity and Metabolite Profiles of the Tropical Marine Sponge Xestospongia muta with Season and Depth. MICROBIAL ECOLOGY 2019; 78:243-256. [PMID: 30413836 DOI: 10.1007/s00248-018-1285-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 10/30/2018] [Indexed: 06/08/2023]
Abstract
Xestospongia muta is among the most emblematic sponge species inhabiting coral reefs of the Caribbean Sea. Besides being the largest sponge species growing in the Caribbean, it is also known to produce secondary metabolites. This study aimed to assess the effect of depth and season on the symbiotic bacterial dynamics and major metabolite profiles of specimens of X. muta thriving in a tropical marine biome (Portobelo Bay, Panamá), which allow us to determine whether variability patterns are similar to those reported for subtropical latitudes. The bacterial assemblages were characterized using Illumina deep-sequencing and metabolomic profiles using UHPLC-DAD-ELSD from five depths (ranging 9-28 m) across two seasons (spring and autumn). Diverse symbiotic communities, representing 24 phyla with a predominance of Proteobacteria and Chloroflexi, were found. Although several thousands of OTUs were determined, most of them belong to the rare biosphere and only 23 to a core community. There was a significant difference between the structure of the microbial communities in respect to season (autumn to spring), with a further significant difference between depths only in autumn. This was partially mirrored in the metabolome profile, where the overall metabolite composition did not differ between seasons, but a significant depth gradient was observed in autumn. At the phyla level, Cyanobacteria, Firmicutes, Actinobacteria, and Spirochaete showed a mild-moderate correlation with the metabolome profile. The metabolomic profiles were mainly characterized by known brominated polyunsaturated fatty acids. This work presents findings about the composition and dynamics of the microbial assemblages of X. muta expanding and confirming current knowledge about its remarkable diversity and geographic variability as observed in this tropical marine biome.
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Affiliation(s)
- Marcela Villegas-Plazas
- RG Microbial Ecology: Metabolism, Genomics & Evolution, Div Ecogenomics & Holobionts, Microbiomas Foundation, LT11A, Chía, 250008, Colombia
| | - Melissa L Wos-Oxley
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
- Honorary Research Associate, South Australian Museum, Adelaide, Australia
| | - Juan A Sanchez
- Laboratorio de Biología Molecular Marina (BIOMMAR), Departmento de Ciencias Biológicas, Universidad de los Andes, Bogotá, Colombia
| | - Dietmar H Pieper
- Microbial Interactions and Processes Research Group, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Olivier P Thomas
- Marine Biodiscovery, School of Chemistry and Ryan Institute, National University of Ireland Galway (NUI Galway), University Road, Galway, H91 TK33, Ireland
| | - Howard Junca
- RG Microbial Ecology: Metabolism, Genomics & Evolution, Div Ecogenomics & Holobionts, Microbiomas Foundation, LT11A, Chía, 250008, Colombia.
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15
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Bayona LM, Videnova M, Choi YH. Increasing Metabolic Diversity in Marine Sponges Extracts by Controlling Extraction Parameters. Mar Drugs 2018; 16:md16100393. [PMID: 30347785 PMCID: PMC6213764 DOI: 10.3390/md16100393] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 10/12/2018] [Accepted: 10/18/2018] [Indexed: 01/05/2023] Open
Abstract
Metabolomics has become an important tool in the search for bioactive compounds from natural sources, with the recent inclusion of marine organisms. Of the several steps performed in metabolomics studies, the extraction process is a crucial step-one which has been overlooked for a long time. In the presented study, a pressurized liquid extraction system was used to investigate the effect of extraction parameters such as pressure, temperature, number of cycles, and solvent polarity on the chemical diversity of the extract obtained from the marine sponge, Xestospongia. For this, a full factorial design (2⁴) was performed using a chemical diversity index, which was found to be a suitable tool to determine the efficiency of the extraction process, as the response variable. This index was calculated using a logarithmic transformation of ¹H NMR signals. Three factors (number of cycles, temperature, and solvent polarity) and two interactions were found to affect the chemical diversity of the obtained extracts significantly. Two individual factors (temperature and solvent polarity) were selected for further study on their influence on sponge metabolites using orthogonal partial least square (OPLS) modeling. Based on the results, the groups of compounds that were most influenced by these parameters were determined, and it was concluded that ethanol as the extraction solvent together with low temperatures were the conditions that provided a higher chemical diversity in the extract.
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Affiliation(s)
- Lina M Bayona
- Natural Products Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333BE Leiden, The Netherlands.
| | - Melina Videnova
- Natural Products Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333BE Leiden, The Netherlands.
| | - Young Hae Choi
- Natural Products Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333BE Leiden, The Netherlands.
- College of Pharmacy, Kyung Hee University, Seoul 02447, Korea.
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16
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Abstract
The first total synthesis of (-)-xestosaprol N and O is described. This synthetic work features a convergent strategy: (1) a Pd-catalyzed arylation followed by cyclization to build a naphthalene fragment (ring C, D); (2) utilization of (-)-quinic acid to construct the chiral hydroxyl group at C-2; (3) a substrate controlled intramolecular Heck reaction to construct a quaternary carbon center (ring B); (4) introduction of a hypotaurine moiety at a late stage to furnish the E ring.
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Affiliation(s)
- Yingbo Shi
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University , 3663 North Zhongshan Road, Shanghai 200062, China
| | - Yang Ji
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University , 3663 North Zhongshan Road, Shanghai 200062, China
| | - Kunyun Xin
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University , 3663 North Zhongshan Road, Shanghai 200062, China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University , 3663 North Zhongshan Road, Shanghai 200062, China.,Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, East China Normal University , 3663 North Zhongshan Road, Shanghai 200062, China
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17
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Cytotoxic Compounds from the Saudi Red Sea Sponge Xestospongia testudinaria. Mar Drugs 2016; 14:md14050082. [PMID: 27128926 PMCID: PMC4882556 DOI: 10.3390/md14050082] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 04/20/2016] [Accepted: 04/21/2016] [Indexed: 11/17/2022] Open
Abstract
Bioassay-guided fractionation of the organic extract of the Red Sea sponge Xestospongia testudinaria led to the isolation of 13 compounds including two new sterol esters, xestosterol palmitate (2) and xestosterol ester of l6′-bromo-(7′E,11′E,l5′E)-hexadeca-7′,11′,l5′-triene-5′,13′-diynoic acid (4), together with eleven known compounds: xestosterol (1), xestosterol ester of 18′-bromooctadeca-7′E,9′E-diene-7′,15′-diynoic acid (3), and the brominated acetylenic fatty acid derivatives, (5E,11E,15E,19E)-20-bromoeicosa-5,11,15,19-tetraene-9,17-diynoic acid (5), 18,18-dibromo-(9E)-octadeca-9,17-diene-5,7-diynoic acid (6), 18-bromooctadeca-(9E,17E)-diene-7,15-diynoic acid (7), 18-bromooctadeca-(9E,13E,17E)-triene-7,15-diynoic acid (8), l6-bromo (7E,11E,l5E)hexadeca-7,11,l5-triene-5,13-diynoic acid (9), 2-methylmaleimide-5-oxime (10), maleimide-5-oxime (11), tetillapyrone (12), and nortetillapyrone (13). The chemical structures of the isolated compounds were accomplished using one- and two-dimensional NMR, infrared and high-resolution electron impact mass spectroscopy (1D, 2D NMR, IR and HREIMS), and by comparison with the data of the known compounds. The total alcoholic and n-hexane extracts showed remarkable cytotoxic activity against human cervical cancer (HeLa), human hepatocellular carcinoma (HepG-2), and human medulloblastoma (Daoy) cancer cell lines. Interestingly, the dibrominated C18-acetylenic fatty acid (6) exhibited the most potent growth inhibitory activity against these cancer cell lines followed by Compounds 7 and 9. Apparently, the dibromination of the terminal olefinic moiety has an enhanced effect on the cytotoxic activity.
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18
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Synthesis and Evaluation of Pancreatic Lipase Inhibitory Effects Halogenated Polyunsaturated Lipids from Marine Natural Products: Methyl Xestospongoate and Analogs. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201500229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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He WF, Liang LF, Cai YS, Gao LX, Li YF, Li J, Liu HL, Guo YW. Brominated polyunsaturated lipids with protein tyrosine phosphatase-1B inhibitory activity from Chinese marine sponge Xestospongia testudinaria. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2015; 17:861-866. [PMID: 25832997 DOI: 10.1080/10286020.2015.1026334] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A new brominated polyunsaturated lipid, methyl (E,E)-14,14-dibromo-4,6,13-tetradecatrienoate (1), along with three known related analogues (2-4), were isolated from the Et2O-soluble portion of the acetone extract of Chinese marine sponge Xestospongia testudinaria treated with diazomethane. The structure of the new compound was elucidated by detailed spectroscopic analysis and by comparison with literature data. Compound 3 exhibited significant inhibitory activity against protein tyrosine phosphatase 1B (PTP1B), a key target for the treatment of type II diabetes and obesity, with an IC50 value of 5.30 ± 0.61 μM, when compared to the positive control oleanolic acid (IC50 = 2.39 ± 0.26 μM).
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Affiliation(s)
- Wen-Fei He
- a School of Pharmaceutical Sciences, Wenzhou Medical University , Wenzhou 325035 , China
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20
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Zhou ZF, Menna M, Cai YS, Guo YW. Polyacetylenes of marine origin: chemistry and bioactivity. Chem Rev 2014; 115:1543-96. [PMID: 25525670 DOI: 10.1021/cr4006507] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Zhen-Fang Zhou
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Zu Chong Zhi Road 555, Shanghai 201203, China
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21
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Qin C, Lin X, Lu X, Wan J, Zhou X, Liao S, Tu Z, Xu S, Liu Y. Sesquiterpenoids and xanthones derivatives produced by sponge-derived fungus Stachybotry sp. HH1 ZSDS1F1-2. J Antibiot (Tokyo) 2014; 68:121-5. [PMID: 25118104 DOI: 10.1038/ja.2014.97] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 06/06/2014] [Accepted: 06/26/2014] [Indexed: 12/18/2022]
Abstract
A new (2) and four known (1, 8-10) sesquiterpenoids, two new (3 and 4) and eight known (5-7, 11-15) xanthone derivatives were isolated from the cultures of sponge-derived fungus Stachybotry sp. HH1 ZDDS1F1-2. The structure of the compounds 1-15 was determined mainly by analysis of the one-dimensional and two-dimensional NMR spectroscopic data and by analogy with the data of those reported. Compound 1 was confirmed by X-ray crystallography. All the compounds were tested for their cytotoxic, antiinflammatory and antiviral (EV71) effects. Compounds 5, 7 and 11 showed significant cytotoxicity against selected human tumor cell lines. Compounds 3, 4 and 11 also displayed significant inhibitory activity against cycloooxygenase (COX-2). Compounds 4, 5 and 11 showed activities against intestinal virus EV71.
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Affiliation(s)
- Chun Qin
- 1] CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China [2] Department of Chemistry, Jinan University, Guangzhou, China
| | - Xiuping Lin
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Xin Lu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Junting Wan
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Xuefeng Zhou
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Shengrong Liao
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Zhengchao Tu
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
| | - Shihai Xu
- Department of Chemistry, Jinan University, Guangzhou, China
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Ecology/Guangdong Key Laboratory of Marine Materia Medica/RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
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22
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He WF, Li Y, Feng MT, Gavagnin M, Mollo E, Mao SC, Guo YW. New isoquinolinequinone alkaloids from the South China Sea nudibranch Jorunna funebris and its possible sponge-prey Xestospongia sp. Fitoterapia 2014; 96:109-14. [DOI: 10.1016/j.fitote.2014.04.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/10/2014] [Accepted: 04/12/2014] [Indexed: 11/17/2022]
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23
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Brominated polyunsaturated lipids from the Chinese sponge Xestospongia testudinaria as a new class of pancreatic lipase inhibitors. Eur J Med Chem 2014; 79:290-7. [DOI: 10.1016/j.ejmech.2014.04.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 03/31/2014] [Accepted: 04/02/2014] [Indexed: 11/19/2022]
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24
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Polónia ARM, Cleary DFR, Duarte LN, de Voogd NJ, Gomes NCM. Composition of Archaea in seawater, sediment, and sponges in the Kepulauan Seribu reef system, Indonesia. MICROBIAL ECOLOGY 2014; 67:553-567. [PMID: 24477923 DOI: 10.1007/s00248-013-0365-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 12/27/2013] [Indexed: 06/03/2023]
Abstract
Coral reefs are among the most diverse and productive ecosystems in the world. Most research has, however, focused on eukaryotes such as corals and fishes. Recently, there has been increasing interest in the composition of prokaryotes, particularly those inhabiting corals and sponges, but these have mainly focused on bacteria. There have been very few studies of coral reef Archaea, despite the fact that Archaea have been shown to play crucial roles in nutrient dynamics, including nitrification and methanogenesis, of oligotrophic environments such as coral reefs. Here, we present the first study to assess Archaea in four different coral reef biotopes (seawater, sediment, and two sponge species, Stylissa massa and Xestospongia testudinaria). The archaeal community of both sponge species and sediment was dominated by Crenarchaeota, while the seawater community was dominated by Euryarchaeota. The biotope explained more than 72% of the variation in archaeal composition. The number of operational taxonomic units (OTUs) was highest in sediment and seawater biotopes and substantially lower in both sponge hosts. No "sponge-specific" archaeal OTUs were found, i.e., OTUs found in both sponge species but absent from nonhost biotopes. Despite both sponge species hosting phylogenetically distinct microbial assemblages, there were only minor differences in Kyoto Encyclopedia of Genes and Genomes (KEGG) functional pathways. In contrast, most functional pathways differed significantly between microbiomes from sponges and nonhost biotopes including all energy metabolic pathways. With the exception of the methane and nitrogen metabolic pathway, all energy metabolic pathways were enriched in sponges when compared to nonhost biotopes.
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Affiliation(s)
- Ana R M Polónia
- Department of Biology, CESAM, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal,
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25
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Akiyama T, Takada K, Oikawa T, Matsuura N, Ise Y, Okada S, Matsunaga S. Stimulators of adipogenesis from the marine sponge Xestospongia testudinaria. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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26
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Nguyen XC, Longeon A, Pham VC, Urvois F, Bressy C, Trinh TTV, Nguyen HN, Phan VK, Chau VM, Briand JF, Bourguet-Kondracki ML. Antifouling 26,27-cyclosterols from the Vietnamese marine sponge Xestospongia testudinaria. JOURNAL OF NATURAL PRODUCTS 2013; 76:1313-1318. [PMID: 23829580 DOI: 10.1021/np400288j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Three new C29 sterols with a cyclopropane ring cyclized between C-26 and C-27 of the side chain, aragusterol I (1), 21-O-octadecanoyl-xestokerol A (4), and 7β-hydroxypetrosterol (5b), were isolated from the Vietnamese marine sponge Xestospongia testudinaria, along with the known compounds, aragusterol B (2), xestokerol A (3), 7α-hydroxypetrosterol (5a), 7-oxopetrosterol (6), and petrosterol (7). The structures of the new compounds were established by analysis of spectroscopic data including 1D and 2D NMR, and high-resolution electrospray ionization mass spectrometry (HRESIMS). Their capacity to inhibit the adhesion of isolated bacteria from marine biofilms was evaluated against the bacterial strains Pseudoalteromonas sp. D41, Pseudoalteromonas sp. TC8, and Polaribacter sp. TC5. Aragusterol B (2) and 21-O-octadecanoyl-xestokerol A (4) exhibited the most potent antifouling activity with EC50 values close to these reported in the literature for tributyltin oxide, a marine anti-biofouling agent now considered to be a severe marine pollutant. Due to its comparable activity to tributyltin oxide and its absence of toxicity, the new 26,27-cyclosterol, 21-O-octadecanoyl-xestokerol A (4) constitutes a promising scaffold for further investigations.
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Affiliation(s)
- Xuan Cuong Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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27
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Gong JX, Wang HY, He WF, Wang ZZ, Xiao W, Guo YW. A concise synthesis of xestospongic acid methyl ester with pancreatic lipase inhibitory activity. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2013; 15:916-919. [PMID: 23796323 DOI: 10.1080/10286020.2013.804815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Xestospongic acid methyl ester, a naturally brominated fatty acid with potent pancreatic lipase inhibitory activity in vitro, was synthesized from 5-hexynol in 30% total yield.
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Affiliation(s)
- Jing-Xu Gong
- a State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , Shanghai , 201203 , China
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28
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Abstract
Covering: 2010. Previous review: Nat. Prod. Rep., 2011, 28, 196. This review covers the literature published in 2010 for marine natural products, with 895 citations (590 for the period January to December 2010) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1003 for 2010), together with the relevant biological activities, source organisms and country of origin. Biosynthetic studies, first syntheses, and syntheses that lead to the revision of structures or stereochemistries, have been included.
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Affiliation(s)
- John W Blunt
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand.
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29
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Zhou X, Lu Y, Lin X, Yang B, Yang X, Liu Y. Brominated aliphatic hydrocarbons and sterols from the sponge Xestospongia testudinaria with their bioactivities. Chem Phys Lipids 2011; 164:703-6. [PMID: 21864515 DOI: 10.1016/j.chemphyslip.2011.08.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Revised: 08/01/2011] [Accepted: 08/08/2011] [Indexed: 11/24/2022]
Abstract
Four brominated aliphatic hydrocarbons (1-4), including a novel brominated ene-tetrahydrofuran named as mutafuran H (1), and five sterols (5-9) were isolated from the South China Sea sponge Xestospongia testudinaria. The structure of 1 was determined on the basis of NMR ((1)H, (13)C NMR, HSQC, HMBC, (1)H-(1)H COSY, and NOESY), MS, and optical rotation analysis. Known compounds were identified by comparison of their NMR data with those reported in the literature. Compounds 1-4, and 6-9 were evaluated for their toxicity against Artemia salina larvae, and anti-acetylcholinesterase activity.
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Affiliation(s)
- Xuefeng Zhou
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
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30
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