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Revision of the genus Fascaplysinopsis, the type species Fascaplysinopsis reticulata (Hentschel, 1912) (Porifera, Dictyoceratida, Thorectidae) and descriptions of two new genera and seven new species. Zootaxa 2023; 5346:201-241. [PMID: 38221341 DOI: 10.11646/zootaxa.5346.3.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Indexed: 01/16/2024]
Abstract
The present study examines the taxonomy of sponge specimens with unique chemistry collectively known as Fascaplysinopsis reticulata (Hentschel, 1912). Examination of Hentschels original species upon which the genus Fascaplysinopsis Bergquist, 1980 was based in conjunction with a comparison with recent Indo-west Pacific collections, using morphological and molecular analyses (ITS and 28S rDNA), revealed extensive variation. Fascaplysinopsis reticulata was found to be a species complex comprising the genus Fascaplysinopsis, as well as two new genera: Skolosachlys gen. nov. and Rubrafasciculus gen. nov. The new species of Fascaplysinopsis described are F. palauensis sp. nov., F. klobos sp. nov. and F. ronquinni sp. nov. The new species of Skolosachlys gen. nov. described herein are: S. enlutea sp. nov. and S. nidus sp. nov. The new species described of Rubrafasciculus gen. nov. includes: R. cerasus sp. nov. and R. fijiensis sp. nov..
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New genus and species of lithistid demosponges from submarine caves in Nuku Hiva (Marquesas Islands) and Tahiti Iti (Society Islands), French Polynesia. THE EUROPEAN ZOOLOGICAL JOURNAL 2021. [DOI: 10.1080/24750263.2021.1939450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Quorum sensing inhibitors from Leucetta chagosensis Dendy, 1863. Lett Appl Microbiol 2015; 61:311-7. [PMID: 26138555 DOI: 10.1111/lam.12461] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 06/20/2015] [Accepted: 06/20/2015] [Indexed: 12/29/2022]
Abstract
UNLABELLED Sponges are a rich source for investigation of bioactive small molecules. They have been mostly investigated for the search of new pharmacological models or therapeutic agents for the treatment of human diseases. Micro-organisms can also represent a virulent pathogen for marine invertebrates such as sponges, which need to protect themselves against these microbes. Sponges' self defence mechanisms involving dialogue molecules thus represent a pertinent research track for potent anti-infective and anti-biofilm activities such as quorum sensing inhibitors (QSIs). The investigation of the QSI crude extract of Leucetta chagosensis Dendy, 1863 led to the isolation of three new alkaloids, isonaamine D, di-isonaamidine A and leucettamine D, along with the known isonaamine A and isonaamidine A. Isonaamidine A and isonaamine D were identified as inhibitors of the three quorum sensing pathways of Vibrio harveyi (CAI-1, AI-2 and harveyi auto inducer), but isonaamidine A displayed the strongest activity on AI-2 biosensor. Both compounds are new examples of natural QSIs of V. harveyi. These results outline the importance of these secondary metabolites for their producing organisms themselves in their natural environment, as well as the potential of the marine resource for aquaculture needs. SIGNIFICANCE AND IMPACT OF THE STUDY A new type of quorum sensing inhibitors was isolated from the sponge Leucetta chagosensis. One of them inhibits strongly the AI-2 channel of Vibrio harveyi, a marine pathogen of special importance in aquaculture. The activity of five different related compounds, including three new natural products discovered there, was investigated leading to structure-activity relationships which are useful for the design of new quorum sensing inhibitors to control marine infectious pathogens.
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The in vivo anti-plasmodial activity of haliclonacyclamine A, an alkaloid from the marine sponge, Haliclona sp. Nat Prod Res 2011; 25:1923-30. [PMID: 21895455 DOI: 10.1080/14786419.2010.547858] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
The compound haliclonacyclamine A was isolated from the Haliclona sponge at Solomon Islands. It acts as a powerful in vitro and in vivo anti-plasmodial agent against the chloroquine-resistant Plasmodium falciparum strain FCB1and Plasmodium vinckei petteri-infected mice, respectively.
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A new cycloamphilectene metabolite from the Vanuatu sponge Axinella sp. JOURNAL OF NATURAL PRODUCTS 2002; 65:1210-1212. [PMID: 12193036 DOI: 10.1021/np010666m] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new diterpene, N-formyl-7-amino-11-cycloamphilectene (1), was isolated from the apolar extract of the Vanuatu sponge Axinella sp. The structure and relative stereochemistry were established by spectroscopic and single-crystal X-ray studies.
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Phloeodictines A and B: new antibacterial and cytotoxic bicyclic amidinium salts from the new caledonian sponge, Phloeodictyon sp. J Org Chem 2002. [DOI: 10.1021/jo00040a022] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Halipeptins A and B: two novel potent anti-inflammatory cyclic depsipeptides from the Vanuatu marine sponge Haliclona species. J Am Chem Soc 2001; 123:10870-6. [PMID: 11686688 DOI: 10.1021/ja010015c] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two new metabolites, named halipeptins A and B, have been isolated from the marine sponge Haliclona sp. Their structures were determined by extensive use of one- and two-dimensional NMR experiments, mass spectrometry, and UV and IR spectroscopy. Halipeptin A is a novel 17-membered cyclic depsipeptide, consisting of five residues including two alanines (with L stereochemistry) and three new residues that appear to be previously undescribed from natural sources: 1,2-oxazetidine-4-methyl-4-carboxylic acid, 3-hydroxy-2,2,4-trimethyl-7-methoxydecanoic acid (HTMMD), and N-methyl-delta-hydroxyisoleucine. The HTMMD residue is substituted with 3-hydroxy-2,2,4-trimethyl-7-hydroxydecanoic acid in halipeptin B. Halipeptin A was found to possess very potent anti-inflammatory activity in vivo, causing about 60% inhibition of edema in mice at the dose of 300 microg/kg (i.p.).
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MESH Headings
- Animals
- Anti-Inflammatory Agents, Non-Steroidal/chemistry
- Anti-Inflammatory Agents, Non-Steroidal/isolation & purification
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Depsipeptides
- Dose-Response Relationship, Drug
- Edema/drug therapy
- Humans
- Leukemia L1210/drug therapy
- Male
- Mice
- Microbial Sensitivity Tests
- Nuclear Magnetic Resonance, Biomolecular
- Peptides, Cyclic/chemistry
- Peptides, Cyclic/isolation & purification
- Peptides, Cyclic/pharmacology
- Porifera/chemistry
- Protein Conformation
- Spectrometry, Mass, Fast Atom Bombardment
- Stereoisomerism
- Tumor Cells, Cultured/drug effects
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Abstract
The dual specificity CDC25 phosphatases dephosphorylate two inhibitory phospho-amino acids of cyclin-dependent kinases, a major family of cell cycle regulators. CDC25 inhibitors constitute new anti-mitotic agents with potential anticancer activity. While screening through a collection of natural products derived from marine organisms for CDC25A inhibitors, we purified and identified coscinosulfate 1, a sesquiterpene sulfate from the New Caledonian sponge Coscinoderma matthewsi, along with 4. The purified compound 1 displayed significant inhibitory activity towards CDC25A (IC(50): 3 microM).
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Makaluvamine P, a new cytotoxic pyrroloiminoquinone from Zyzzya cf. fuliginosa. JOURNAL OF NATURAL PRODUCTS 2001; 64:1354-1356. [PMID: 11678667 DOI: 10.1021/np010053+] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A new pyrroloiminoquinone alkaloid (1) belonging to the makaluvamine family has been isolated from the sponge Zyzzya cf. fuliginosa collected in the waters off the Vanuatu Islands. The compound, designated makulavamine P, was characterized on the basis of its spectral data and displayed cytoxicity in the microM range on KB cells and antioxidant activity.
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Alterations of transmembrane currents in frog atrial heart muscle induced by photoexcited gymnochrome A purified from the crinoid, Gymnochrinus richeri. Photochem Photobiol 2001; 74:115-9. [PMID: 11547543 DOI: 10.1562/0031-8655(2001)074<0115:aotcif>2.0.co;2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The effects of gymnochrome A were tested on the electrical activity of the frog atrial heart muscle. Gymnochrome A (1-5 microM) did not alter the resting potential. Gymnochrome A (5 microM) slowed the initial depolarizing phase of the spontaneously beating action potential. Under voltage-clamp conditions gymnochrome A (5 microM) did not affect the electrical constant of the membrane and the kinetic parameters of the peak Na+ current (INa) recorded in the Ringer solution containing tetraethylammonium (2 mM) and Cd2+ (1 mM) but shifted the membrane potential at which the current both activated and reached its maximal value toward more negative membrane potentials. It did not alter the reversal potential for INa, indicating that the selectivity of the Na+ channels had not changed. These observations suggest that gymnochrome A binds to the membrane and shifts the activation of INa on the voltage axis by modifying the free negative fixed charges present at the membrane surface rather than by occupying a specific site on the Na+ channel. Photoexcited gymnochrome A transiently triggered an early outward current which lengthened the time-to-peak of INa and decreased its amplitude. In addition, photoexcited gymnochrome A blocked the background K+ current. This is, to our knowledge, the first time that such effects are reported on the cardiac muscle. These observations suggest that the photoexcitation of gymnochrome produces physico-chemical effects which lead to intracellular changes. Further experiments are required to determine their nature.
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New sesquiterpene derivatives from the sponge Dysidea species with a selective inhibitor profile against human phospholipase A2 and other leukocyte functions. JOURNAL OF NATURAL PRODUCTS 2001; 64:612-615. [PMID: 11374954 DOI: 10.1021/np000637w] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two new sesquiterpene cyclopentenones, dysidenones A and B (2, 3), and a new sesquiterpene aminoquinone, dysidine (4), all containing the same rearranged drimane skeleton, have been isolated from a Dysidea sp. sponge, along with bolinaquinone (1). The structures were established from 2D NMR data. Bolinaquinone (1), dysidine (4), and a 1:1 mixture of dysidenones A and B (2, 3) significantly inhibited human synovial phospholipase A2 (PLA2) at 10 microM. Compound 4, which shows an IC50 value of 2.0 microM, exerts a higher potency and selectivity toward this enzyme than the reference inhibitor manoalide. In addition, all of these compounds modulated at 10 microM other human leukocyte functions such as the degranulation process measured as elastase release and the superoxide production measured by chemiluminescence.
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The occurrence of the human glycoconjugate C(2)-alpha-D-mannosylpyranosyl-L-tryptophan in marine ascidians. Org Lett 2000; 2:2765-7. [PMID: 10964360 DOI: 10.1021/ol0061384] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[structure: see text] The C-glycoconjugate C(2)-alpha-D-mannosylpyranosyl-L-tryptophan (1), a metabolite known to be generated in humans through a novel posttranslational process, has been isolated from marine ascidians Leptoclinides dubius and Pharyngodictyon cauliflos and its N(alpha)-methyl derivative (2) from Ritterella rete.
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New isomalabaricane derivatives from a new species of Jaspis sponge collected at the Vanuatu islands. JOURNAL OF NATURAL PRODUCTS 2000; 63:943-946. [PMID: 10924170 DOI: 10.1021/np000088u] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Six new cytotoxic isomalabaricane-type triterpenoids and nortriterpenoids with a 3alpha-acetoxy group were isolated, along with the known globostellatic acids B (1) and C (2), from the marine sponge Jaspis sp. collected at Vanuatu Island. The structures were determined by 2D NMR data and by comparison with spectral data of known related compounds.
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New pyridinium alkaloids from a marine sponge of the genus Spongia with a human phospholipase A(2) inhibitor profile. JOURNAL OF NATURAL PRODUCTS 2000; 63:322-6. [PMID: 10757711 DOI: 10.1021/np990374+] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Four new bioactive pyridinium alkaloids, named spongidines A-D (5-8), have been isolated from a Vanuatu sponge of the genus Spongia, together with known petrosaspongiolides D (1) and G (2). Compounds 3 and 4 are 21-hydroxy derivatives of petrosaspongiolides K and P. Structure elucidation was accomplished through extensive 2D NMR experiments (COSY, ROESY, HMBC, HMQC) and IR, UV, and FABMS data. All compounds significantly inhibited human synovial phospholipase A(2) (PLA(2)) at 10 microM, with an IC(50) value of 5.8 microM for compound 4, which is the most potent inhibitor, with a higher selectivity toward this enzyme than the reference inhibitor manoalide. Pyridinium alkaloids (5-8) mainly inhibited human synovial PLA(2). Compound 8, which contains a sulfonic acid group, is the most interesting inhibitor.
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Metabolites from the Sponge-Associated Bacterium Pseudomonas Species. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 1999; 1:384-390. [PMID: 10489417 DOI: 10.1007/pl00011792] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
: Quinolones and a phosphatidyl glyceride were isolated from the sponge-associated bacterial strain Pseudomonas sp. Structures were elucidated by spectroscopic analysis and chemical transformations.
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New jaspamide derivatives from the marine sponge Jaspis splendans collected in Vanuatu. JOURNAL OF NATURAL PRODUCTS 1999; 62:332-334. [PMID: 10075778 DOI: 10.1021/np9803225] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two new jaspamide derivatives (1 and 2) along with jaspamide have been isolated from the marine sponge Jaspis splendans collected in Vanuatu. Their chemical structures were determined from 1D and 2D NMR studies and MS data. These two compounds inhibited the in vitro growth of the NSCLC-N6 human tumor cell lines with IC50 values in the microg/mL range.
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Minalemines A-F: Sulfamic acid peptide guanidine derivatives isolated from the marine tunicate Didemnun rodriguesi. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00388-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Petrosaspongiolides M-R: new potent and selective phospholipase A2 inhibitors from the New Caledonian marine sponge Petrosaspongia nigra. JOURNAL OF NATURAL PRODUCTS 1998; 61:571-5. [PMID: 9599251 DOI: 10.1021/np9704922] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Five new bioactive sesterterpenes (1-5) have been isolated from the New Caledonian marine sponge Petrosaspongia nigra Bergquist and named petrosaspongiolides M-R. Their chemical structures were determined from 1D and 2D NMR studies and MS data. All compounds inhibited different preparations of phospholipase A2 (PLA2) by irreversibly blocking these enzymes (particularly human synovial and bee venom, see Table 3), with IC50 values in the micromolar range. Interestingly, these compounds displayed a much lower activity (or no activity at all) toward porcine pancreas and Naja naja venom PLA2 enzymes. The most potent compound, 1 (IC50 1.6 and 0.6 microM for human synovial and bee venom PLA2 enzymes, respectively), was slightly more active than manoalide (6) (IC50 3.9 and 7.5 microM) under our experimental conditions. Compound 3 is more selective, inhibiting human synovial PLA2 to a greater extent than bee venom PLA2.
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20
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Abstract
Metabolites isolated from marine invertebrates, callipeltin A, crambescidin, ptilomycalin A, celeromycalin, gymnochrome B, gymnochrome D and isogymnochrome D previously shown bioactive on either herpes simplex virus 1 or human immunodeficiency virus, were tested on a new in vitro bioassay using the dengue virus 1. Only gymnochrome D and isogymnochrome D isolated from the living fossil crinoid Gymnocrinus richeri are highly potent dengue antiviral agents.
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Naturally occurring somatostatin and vasoactive intestinal peptide inhibitors. Isolation of alkaloids from two marine sponges. PLANTA MEDICA 1996; 62:28-30. [PMID: 8720384 DOI: 10.1055/s-2006-957790] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The vasoactive intestinal peptide (VIP) and somatostatin (somatotropin release inhibiting factor, SRIF) are important neurotransmitters in a number of basic physiological events. Their disturbances have been reported in many diseases such as cystic fibrosis, impotent man (VIP), Alzheimer's disease, and some tumours (SRIF). Xestospongine B (1), sceptrine (2), and ageliferine (3), three alkaloids isolated from Xestospongia sp. and Agelas novaecaledoniae are reported as somatostatin and VIP inhibitors. The natural products 1, 2 and 3 exhibited a high affinity for somatostatin (IC50 = 12 microM, 0.27 microM, and 2.2 microM, respectively), 2 and 3 showed an affinity for VIP (19.8 microM and 19.2 microM, respectively). Due to the interaction between non-peptidic compounds and somatostatin/VIP receptors, these three alkaloids could be promising agents in the research on natural non-peptidic compounds for therapeutical interventions.
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Neosiphoniamolide A, a novel cyclodepsipeptide, with antifungal activity from the marine sponge Neosiphonia superstes. JOURNAL OF NATURAL PRODUCTS 1995; 58:121-123. [PMID: 7760068 DOI: 10.1021/np50115a017] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A novel cyclodepsipeptide, neosiphoniamolide A [1], has been isolated from the sponge Neosiphonia superstes. The structure of 1, which contains a 12-carbon hydroxy acid, glycine, valine, and a halogenated tyrosine residue in an 18-membered ring, is related to jaspamide and the geodiamolides, previously isolated from sponges. The structure was solved by spectroscopic analysis.
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A novel cytotoxic macrolide, superstolide B, related to superstolide A, from the New Caledonian marine sponge Neosiphonia superstes. JOURNAL OF NATURAL PRODUCTS 1994; 57:1595-1597. [PMID: 7853010 DOI: 10.1021/np50113a024] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The structure of a new cytotoxic macrolide, superstolide B [1], isolated from the deep water sponge Neosiphonia superstes, collected off New Caledonia, was elucidated mainly on the basis of nmr data. Compound 1 is closely related to superstolide A [2], a major cytotoxic component isolated from that organism, but lacks the 25-hydroxyl group found in 2 and has a C-24 (C-25)-double bond.
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Bistramides A, B, C, D, and K: a new class of bioactive cyclic polyethers from Lissoclinum bistratum. JOURNAL OF NATURAL PRODUCTS 1994; 57:1336-1345. [PMID: 7807120 DOI: 10.1021/np50112a002] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The isolation and characterization is described of four novel cyclic polyethers, bistramides B [2], C [3], D [4], and K [5], which are closely related to the previously reported bistramide A [1] from the New Caledonian urochordata Lissoclinum bistratum. The structures of these metabolites were defined by spectroscopic methods. The four compounds exhibited in vitro cytotoxicity toward six tumor cell lines, including the human non-small cell lung carcinoma (NSCLC-N6) line. Cytofluorimetric analysis with bistramide K showed a complete block of NSCLC-N6 cells in the G1 phase. Bistramide D and particularly bistramide K are less toxic than bistramides A, B, and C and are thereby effective in vivo against NSCLC-N6.
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(+/-)-Gelliusines A and B, two diastereomeric brominated tris-indole alkaloids from a deep water new caledonian marine sponge (Gellius or Orina sp.). JOURNAL OF NATURAL PRODUCTS 1994; 57:1294-1299. [PMID: 7798965 DOI: 10.1021/np50111a020] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Two new diastereomeric brominated tris-indole alkaloids occurring as enantiomeric pairs, (+/-)-gelliusines A [1] and B [2], have been isolated from a deep water New Caledonian sponge (Gellius or Orina sp.), whose crude extract exhibited cytotoxicity against KB cells. Their structures were elucidated by spectroscopic methods including one- and two-dimensional nmr spectroscopy. The major compound, (+/-) gelliusine A [1], which showed very weak cytotoxicity, proved to be active at the serotonin receptor.
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[Tropical biological diversity and therapeutic innovations. Research conducted by ORSTOM]. ANNALES DE LA SOCIETE BELGE DE MEDECINE TROPICALE 1993; 73:169-78. [PMID: 8279864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Brominated indole alkaloids from the marine tunicate Pseudodistoma arborescens. JOURNAL OF NATURAL PRODUCTS 1993; 56:99-104. [PMID: 8450325 DOI: 10.1021/np50091a014] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Chemical investigation of the cytotoxic CH2Cl2-soluble extract of the marine tunicate Pseudodistoma arborescens led to the isolation of four brominated indole alkaloids, arborescidines A [1], B [2], C [3], and D [4], which were characterized by their spectral data, especially 2D nmr. Only arborescidine D [4] showed moderate activity (IC50 3 micrograms/ml) in vitro against the growth of KB human buccal carbinoma cells.
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Effects of bistramide A on a non-small-cell bronchial carcinoma line. Cancer Chemother Pharmacol 1991; 28:283-92. [PMID: 1652385 DOI: 10.1007/bf00685536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The antiproliferative effects of bistramide A, a nitrogenous dilactam polyether from Lissoclinum bistratum Sluiter (Urochordata), were studied at the level of the cell cycle in asynchronous cells of the NSCLCN6-L16 line. Bistramide A has a dual mechanism that induces blockade in the G1 phase (compatible with differentiation properties reported elsewhere) and causes polyploidy that is suggestive of inaptitude for cytokinesis. These effects confirm the results of cytomorphology studies in electron microscopy.
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MESH Headings
- Acetamides
- Animals
- Antineoplastic Agents/therapeutic use
- Antineoplastic Agents/toxicity
- Carcinoma, Bronchogenic/drug therapy
- Carcinoma, Bronchogenic/ultrastructure
- Carcinoma, Non-Small-Cell Lung/drug therapy
- Carcinoma, Non-Small-Cell Lung/ultrastructure
- Cell Cycle/drug effects
- Cell Line
- Drug Screening Assays, Antitumor
- Ethers, Cyclic/therapeutic use
- Ethers, Cyclic/toxicity
- Flow Cytometry
- Humans
- Lung Neoplasms/drug therapy
- Lung Neoplasms/ultrastructure
- Mice
- Mice, Nude
- Microscopy, Electron
- Neoplasm Transplantation
- Pyrans
- Spiro Compounds
- Tumor Cells, Cultured/drug effects
- Tumor Cells, Cultured/ultrastructure
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