1
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Nguyen TL, Nokin MJ, Egorov M, Tomé M, Bodineau C, Di Primo C, Minder L, Wdzieczak-Bakala J, Garcia-Alvarez MC, Bignon J, Thoison O, Delpech B, Surpateanu G, Frapart YM, Peyrot F, Abbas K, Terés S, Evrard S, Khatib AM, Soubeyran P, Iorga BI, Durán RV, Collin P. mTOR Inhibition via Displacement of Phosphatidic Acid Induces Enhanced Cytotoxicity Specifically in Cancer Cells. Cancer Res 2018; 78:5384-5397. [PMID: 30054335 DOI: 10.1158/0008-5472.can-18-0232] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 06/09/2018] [Accepted: 07/23/2018] [Indexed: 11/16/2022]
Abstract
The mTOR is a central regulator of cell growth and is highly activated in cancer cells to allow rapid tumor growth. The use of mTOR inhibitors as anticancer therapy has been approved for some types of tumors, albeit with modest results. We recently reported the synthesis of ICSN3250, a halitulin analogue with enhanced cytotoxicity. We report here that ICSN3250 is a specific mTOR inhibitor that operates through a mechanism distinct from those described for previous mTOR inhibitors. ICSN3250 competed with and displaced phosphatidic acid from the FRB domain in mTOR, thus preventing mTOR activation and leading to cytotoxicity. Docking and molecular dynamics simulations evidenced not only the high conformational plasticity of the FRB domain, but also the specific interactions of both ICSN3250 and phosphatidic acid with the FRB domain in mTOR. Furthermore, ICSN3250 toxicity was shown to act specifically in cancer cells, as noncancer cells showed up to 100-fold less sensitivity to ICSN3250, in contrast to other mTOR inhibitors that did not show selectivity. Thus, our results define ICSN3250 as a new class of mTOR inhibitors that specifically targets cancer cells.Significance: ICSN3250 defines a new class of mTORC1 inhibitors that displaces phosphatidic acid at the FRB domain of mTOR, inducing cell death specifically in cancer cells but not in noncancer cells. Cancer Res; 78(18); 5384-97. ©2018 AACR.
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Affiliation(s)
- Tra-Ly Nguyen
- Institut Européen de Chimie et Biologie, INSERM U1218, Université de Bordeaux, Pessac, France
| | - Marie-Julie Nokin
- Institut Européen de Chimie et Biologie, INSERM U1218, Université de Bordeaux, Pessac, France.,Metastasis Research Laboratory, GIGA-Cancer, University of Liège (ULiège), Liège, Belgium
| | - Maxim Egorov
- ATLANTHERA, Cedex, France.,Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Mercedes Tomé
- Laboratoire de l'Angiogénèse et du Microenvironnement des Cancers, INSERM U1029, Université de Bordeaux, Allée Geoffroy Saint Hilaire, Bâtiment, Pessac, France
| | - Clément Bodineau
- Institut Européen de Chimie et Biologie, INSERM U1218, Université de Bordeaux, Pessac, France
| | - Carmelo Di Primo
- Université de Bordeaux, Laboratoire ARNA, Bordeaux, France; INSERM U1212, CNRS UMR 5320, Institut Européen de Chimie et Biologie, CNRS UMS3033/INSERMUS001, Pessac, France
| | - Lætitia Minder
- Université de Bordeaux, CNRS UMS3033/INSERM US001, Institut Européen de Chimie et Biologie, Pessac, France
| | | | | | - Jérôme Bignon
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Odile Thoison
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Bernard Delpech
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Georgiana Surpateanu
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France
| | - Yves-Michel Frapart
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR8601, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Fabienne Peyrot
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR8601, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Ecole Supérieure du Professorat et de l'Education de l'Académie de Paris, Sorbonne Université, Paris, France
| | - Kahina Abbas
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR8601, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Silvia Terés
- Institut Européen de Chimie et Biologie, INSERM U1218, Université de Bordeaux, Pessac, France
| | - Serge Evrard
- Institut Bergonié, Digestive Tumours Unit, Université de Bordeaux, Bordeaux, France
| | - Abdel-Majid Khatib
- Laboratoire de l'Angiogénèse et du Microenvironnement des Cancers, INSERM U1029, Université de Bordeaux, Allée Geoffroy Saint Hilaire, Bâtiment, Pessac, France
| | - Pierre Soubeyran
- Institut Bergonié, INSERM U1218, Université de Bordeaux, Bordeaux, France
| | - Bogdan I Iorga
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France.
| | - Raúl V Durán
- Institut Européen de Chimie et Biologie, INSERM U1218, Université de Bordeaux, Pessac, France.
| | - Pascal Collin
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Gif-sur-Yvette, France.,Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, CNRS UMR8601, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Université Paris Diderot, UFR Odontologie, Paris, France
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2
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Sorres J, Martin MT, Petek S, Levaique H, Cresteil T, Ramos S, Thoison O, Debitus C, Al-Mourabit A. Pipestelides A-C: cyclodepsipeptides from the Pacific marine sponge Pipestela candelabra. J Nat Prod 2012; 75:759-63. [PMID: 22364566 DOI: 10.1021/np200714m] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Pipestelides A-C (2-4) are three new NRPS-PKS hybrid macrolides containing uncommon moieties, isolated from the Pacific marine sponge Pipestela candelabra. Their structures were elucidated on the basis of spectroscopic data. These cyclodepsipeptides appear to be biosynthetically related to jaspamide (aka jasplakinolide) (1) by chemical modification of the building blocks of the polyketide or peptide chains. Pipestelides A-C (2-4) contain a bromotyrosine [3-amino-3-(bromo-4-hydroxyphenyl)propanoic acid] unit, a polypropionate with a Z double bond, and a 2-hydroxyquinolinone, respectively. Revised chemical shift assignments are provided for the co-isolated known jasplakinolide C(a) (5). In addition, compounds 2 and 3 exhibited cytotoxic activities in the micromolar range.
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Affiliation(s)
- Jonathan Sorres
- Centre de Recherche de Gif-sur-Yvette, Institut de Chimie des Substances Naturelles, UPR 2301, ICSN-CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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3
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Marti G, Eparvier V, Moretti C, Prado S, Grellier P, Hue N, Thoison O, Delpech B, Guéritte F, Litaudon M. Antiplasmodial benzophenone derivatives from the root barks of Symphonia globulifera (Clusiaceae). Phytochemistry 2010; 71:964-974. [PMID: 20356612 DOI: 10.1016/j.phytochem.2010.03.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2010] [Revised: 03/04/2010] [Accepted: 03/09/2010] [Indexed: 05/29/2023]
Abstract
In an effort to find antimalarial drugs, a systematic in vitro evaluation on a chloroquine-resistant strain of Plasmodium falciparum (FcB1) was undertaken on sixty plant extracts collected in French Guiana. The ethyl acetate extract obtained from the root barks of Symphonia globulifera exhibited a strong antiplasmodial activity (97% at 10 microg/ml). The phytochemical investigation of this extract led to the isolation of nine polycyclic polyprenylated acylphloroglucinol (PPAPs) compounds and two oxidized derivatives. All compounds showed antiplasmodial activity with IC(50)s ranged from 2.1 to 10.1 microM. A LC/ESI-MS(n) study performed on polyprenylated benzophenones previously isolated from Moronobea coccinea provided a reliable method for their detection in the extract and structural elucidation.
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Affiliation(s)
- Guillaume Marti
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, Gif-sur-Yvette, France
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4
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Gabant M, Martin MT, Moriou C, Ermolenko L, Guérineau V, Retailleau P, Thoison O, Boury-Esnault N, Pérez T, Al-Mourabit A. Axiphenylalaninium and axityrosinium, modified amino acids from the Mediterranean marine sponge Axinella polypoides. J Nat Prod 2009; 72:1875-1878. [PMID: 19757856 DOI: 10.1021/np900204q] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Two new modified amino acids, axiphenylalaninium (1) and axityrosinium (2), along with four known metabolites, C2-alpha-D-mannosylpyranosyl-L-tryptophan (3), N3,5'-cycloxanthosine (4), palythine (5), and taurine, were isolated from the marine sponge Axinella polypoides collected in the Mediterranean Sea. The structures were determined by spectroscopic studies and confirmed by X-ray analysis and chemical modifications.
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Affiliation(s)
- Marion Gabant
- Institut de Chimie des Substances Naturelles du CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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5
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Allouche N, Morleo B, Thoison O, Dumontet V, Nosjean O, Guéritte F, Sévenet T, Litaudon M. Biologically active tetralones from New Caledonian Zygogynum spp. Phytochemistry 2008; 69:1750-1755. [PMID: 18334258 DOI: 10.1016/j.phytochem.2008.01.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 01/30/2008] [Accepted: 01/30/2008] [Indexed: 05/26/2023]
Abstract
Bioassay guided purification of the ethyl acetate extracts of the bark and leaves of five New Caledonian Zygogynum species (Winteraceae) led to the isolation and characterization of four phenyl-3-tetralones (3,4-dihydronaphthalen-1(2H)-one). Their structures were determined by various NMR techniques and chemical studies. The absolute configuration of the compounds was established by circular dichroism. The compounds showed binding affinity for peroxisome proliferator-activated receptor-gamma (PPAR-gamma) and significant inhibitory activity against KB cancer cell line.
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6
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Jolly C, Thoison O, Martin MT, Dumontet V, Gilbert A, Pfeiffer B, Léonce S, Sévenet T, Guéritte F, Litaudon M. Cytotoxic turrianes of Kermadecia elliptica from the New Caledonian rainforest. Phytochemistry 2008; 69:533-40. [PMID: 17825854 DOI: 10.1016/j.phytochem.2007.07.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2007] [Revised: 07/03/2007] [Accepted: 07/18/2007] [Indexed: 05/17/2023]
Abstract
In the course of an automated screening for small molecules presenting cytotoxic activity, eight new cyclophanes named kermadecins A-H (1-8), have been isolated from the bark of a New Caledonian plant, Kermadecia elliptica, Proteaceae. A LC/APCI-MS study performed on kermadecins A, B and C, provided a reliable method for the detection of other analogues existing in small quantities in the extract. This led to the isolation of five other members of this chemical series. The structures were elucidated by extensive mono- and bi-dimensional spectroscopy and mass spectrometry. The cytotoxic activity of four of them was evaluated on various cell lines.
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Affiliation(s)
- Claire Jolly
- Institut de Chimie des Substances Naturelles, CNRS, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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7
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Zhang YJ, Litaudon M, Bousserouel H, Martin MT, Thoison O, Léonce S, Dumontet V, Sévenet T, Guéritte F. Sesquiterpenoids and cytotoxic lignans from the bark of Libocedrus chevalieri. J Nat Prod 2007; 70:1368-70. [PMID: 17676899 DOI: 10.1021/np070124q] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Investigation of an EtOAc extract of the bark of Libocedrus chevalieri led to the isolation of a new cytotoxic lignan, 5-methoxy-4-epipodophyllotoxin (1), and three known podophyllotoxin analogues, 5-methoxypodophyllotoxin, 5-methoxypodophyllotoxin-4-O-beta-D-glucoside, and podophyllotoxin-4-O-beta-D-glucoside. Six sesquiterpenoids and a diterpenoid were also obtained. Of these, compounds 2-4 are new sesquiterpenoids, named libocedrines A-C, and 3beta-hydroxyilicic alcohol was isolated for the first time from a higher plant. Structures of the new compounds were determined on the basis of spectroscopic methods. Cytotoxicity of the isolated compounds against KB and L1210 cells and their effects on tubulin assembly were evaluated.
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Affiliation(s)
- Ying-Jun Zhang
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, 91198 Gif-sur-Yvette Cedex, France
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8
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Awang K, Lim CS, Mohamad K, Morita H, Hirasawa Y, Takeya K, Thoison O, Hadi AHA. Erythrocarpines A-E, new cytotoxic limonoids from Chisocheton erythrocarpus. Bioorg Med Chem 2007; 15:5997-6002. [PMID: 17576066 DOI: 10.1016/j.bmc.2007.05.049] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2007] [Revised: 05/17/2007] [Accepted: 05/19/2007] [Indexed: 11/26/2022]
Abstract
Five new cytotoxic limonoids, erythrocarpines A-E (1-5), were isolated from the bark of Chisocheton erythrocarpus Hiern. Chemical structures, stereochemistry, and conformation were fully elucidated and characterized by 2D NMR, MS, and computational methods.
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Affiliation(s)
- Khalijah Awang
- Department of Chemistry, University Malaya, Kuala Lumpur, Malaysia.
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9
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Eparvier V, Thoison O, Bousserouel H, Guéritte F, Sévenet T, Litaudon M. Cytotoxic farnesyl glycosides from Pittosporum pancheri. Phytochemistry 2007; 68:604-8. [PMID: 17174992 DOI: 10.1016/j.phytochem.2006.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2006] [Revised: 10/11/2006] [Accepted: 11/02/2006] [Indexed: 05/13/2023]
Abstract
Bioassay guided purification of the ethanolic extract of the bark of New Caledonian Pittosporum pancheri Brongn. and Gris (Pittosporaceae) led to the isolation and characterization of two new farnesyl monoglycosides, pancherins A and B. The structure of these compounds were determined on the basis of spectroscopic studies. The new compounds displayed a significant activity in the in vitro cytotoxic assay against KB cancer cell line, and pancherin A inhibits weakly farnesyl protein transferase.
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Affiliation(s)
- Véronique Eparvier
- Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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10
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Eparvier V, Nguyen VH, Thoison O, Martin MT, Sévenet T, Guéritte F. Cytotoxic monotetrahydrofuran acetogenins from Disepalum plagioneurum. J Nat Prod 2006; 69:1289-94. [PMID: 16989521 DOI: 10.1021/np060168j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The known plagionicin A (1) and eight new monotetrahydrofuran acetogenins, plagionicins B-D (2-4) and plagioneurins A-E (5-9), were isolated from the leaves of Disepalum plagioneurum by bioassay-guided purification. The structures of the new compounds were elucidated by spectroscopic methods. The new monotetrahydrofuran (mono-THF) acetogenins exhibited significant in vitro cytotoxicity against the KB cancer cell line, with IC(50) values in the nanomolar range.
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Affiliation(s)
- Véronique Eparvier
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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11
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Hamed W, Brajeul S, Mahuteau-Betzer F, Thoison O, Mons S, Delpech B, Nguyen VH, Sévenet T, Marazano C. Oblongifolins A-D, polyprenylated benzoylphloroglucinol derivatives from Garcinia oblongifolia. J Nat Prod 2006; 69:774-7. [PMID: 16724839 DOI: 10.1021/np050543s] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Oblongifolins A-D (2-5), four new polyprenylated 3,4-dihydroxybenzoylphloroglucinol compounds, were isolated from the bark of Garcinia oblongifolia collected in Vietnam. The bark was also found to contain the known compounds camboginol and guttiferone B. Extraction of the leaves gave 2 and camboginol. Details of the structure elucidation of 2-5 and stereochemical comparisons with known natural derivatives of general formula 1a,b are presented. The biological activity of these compounds concerning interactions with tubulin was investigated.
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Affiliation(s)
- Wafaa Hamed
- Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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12
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Décor A, Bellocq D, Thoison O, Lekieffre N, Chiaroni A, Ouazzani J, Cresteil T, Guéritte F, Baudoin O. In vitro oxidative metabolism study of (−)-rhazinilam. Bioorg Med Chem 2006; 14:1558-64. [PMID: 16257221 DOI: 10.1016/j.bmc.2005.10.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2005] [Revised: 09/30/2005] [Accepted: 10/04/2005] [Indexed: 11/21/2022]
Abstract
Metabolism studies were conducted in order to investigate the reasons for the in vivo lack of activity of (-)-rhazinilam 1, an original poison of the mitotic spindle. Bioconversion by Beauveria bassiana strains, rat and human liver microsomes allowed the identification of metabolites 2, 3, and 4 oxidized in positions 3 and 5 of rhazinilam. Further experiments indicated that CYP2B6 was the main CYP responsible for the oxidation of 1 by human liver microsomes. All isolated metabolites were markedly less active than rhazinilam in vitro, which might explain its in vivo inactivity.
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Affiliation(s)
- Anne Décor
- Institut de Chimie des Substances Naturelles, CNRS, Gif-sur-Yvette, France
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13
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Krief S, Thoison O, Sévenet T, Wrangham RW, Lavaud C. Triterpenoid saponin anthranilates from Albizia grandibracteata leaves ingested by primates in Uganda. J Nat Prod 2005; 68:897-903. [PMID: 15974615 DOI: 10.1021/np049576i] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Three new oleanane-type triterpene saponins (1-3), named grandibracteosides A-C, were isolated from the methanolic extract of leaves of Albizia grandibracteata, a species consumed by primates in the Kibale National Park, Uganda. The structures of the saponins were established using 1D and 2D NMR experiments and mass spectrometry and confirmed by acid and alkaline hydrolysis. The crude extract and the pure compounds showed significant inhibitory activity against KB and MCF7 tumoral cell lines in vitro. The compounds are glycosides of acacic acid acylated by an o-aminobenzoyl unit. This is the first report of such ester saponins in dicotyledonous plants. Studies of the primate diet may provide a useful method for finding naturally occurring compounds of medicinal significance.
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Affiliation(s)
- Sabrina Krief
- Laboratoire de Pharmacognosie, FRE CNRS 2715, IFR 53 Biomolécules, Reims, France.
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14
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Rubnov S, Chevallier C, Thoison O, Debitus C, Laprevote O, Guénard D, Sévenet T. Echinosulfonic acid D: an ESI MSn evaluation of a new cytotoxic alkaloid from the New-Caledonian sponge Psammoclemma sp. Nat Prod Res 2005; 19:75-9. [PMID: 15700649 DOI: 10.1080/1478641042000199851] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A new bromoindolesulfonic acid derivative, echinosulfonic acid D (1) was isolated from the New-Caledonian sponge Psammoclemma sp. in a minute quantity. The structure of the alkaloid was established by spectroscopic methods and, in particular, by ESI MSn experiments. Echinosulfonic acid D was cytotoxic to KB cells (IC50 2 microg/mL).
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Affiliation(s)
- Shai Rubnov
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, 91198 Gif-sur-Yvette Cedex, France
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15
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Susplugas S, Hung NV, Bignon J, Thoison O, Kruczynski A, Sévenet T, Guéritte F. Cytotoxic arylnaphthalene lignans from a Vietnamese acanthaceae, Justicia patentiflora. J Nat Prod 2005; 68:734-8. [PMID: 15921419 DOI: 10.1021/np050028u] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
One new norlignan (1) and five new lignans (2-6) were isolated from the leaves and stems of Justicia patentiflora by a bioassay-guided purification. Five known compounds, carinatone, diphyllin, justicidin A, taiwanin E, and tuberculatin, were also found in J. patentiflora. Most of the new compounds display significant activity in in vitro cytotoxic assays against KB, HCT116, and MCF-7 cancer cell lines and arrest the cell cycle in the G0/G1 phase.
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Affiliation(s)
- Sophie Susplugas
- Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
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16
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Voutquenne L, Guinot P, Froissard C, Thoison O, Litaudon M, Lavaud C. Haemolytic acylated triterpenoid saponins from Harpullia austro-caledonica. Phytochemistry 2005; 66:825-835. [PMID: 15797609 DOI: 10.1016/j.phytochem.2005.02.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2004] [Revised: 02/08/2005] [Indexed: 05/24/2023]
Abstract
Eight new acylated triterpenoid saponins were isolated from the stem bark of Harpullia austro-caledonica along with the known harpuloside (9). Their structures were established using 1D and 2D NMR and mass spectrometry as 3-O-beta-D-galactopyranosyl-(1-->2)-beta-D-glucuronopyranosyl-21 beta, 22 alpha-di-O-angeloylbarringtogenol C (1), 3-O-alpha-L-rhamnopyranosyl-(1-->3)-[beta-D-galactopyranosyl-(1-->2)]-beta-D-glucuronopyranosyl-21 beta, 22 alpha-di-O-angeloyl barringtogenol C (2), 3-O-alpha-L-arabinofuranosyl-(1-->3)-[beta-D-galactopyranosyl-(1-->2)]-beta-D-glucuronopyranosyl-21 beta, 22 alpha-di-O-angeloylbarringtogenol C (3), 3-O-alpha-L-arabinofuranosyl-(1-->2)-beta-D-glucuronopyranosyl-21 beta, 22 alpha-di-O-angeloylprotoaescigenin (4), 3-O-alpha-L-arabinofuranosyl-(1-->3)-[alpha-L-arabinofuranosyl-(1-->2)]-beta-D-glucuronopyranosyl-21 beta, 22 alpha-di-O-angeloyl protoaescigenin (5), 3-O-alpha-L-arabinofuranosyl-(1-->3)-[beta-D-xylopyranosyl-(1-->2)]-beta-D-glucuronopyranosyl-21 beta, 22 alpha-di-O-angeloylprotoaescigenin (6), 3-O-alpha-L-arabinofuranosyl-(1-->3)-[beta-D-glucopyranosyl-(1-->2)]-beta-D-glucuronopyranosyl-21 beta, 22 alpha-di-O-angeloylprotoaescigenin (7), 3-O-beta-D-xylopyranosyl-(1-->2)-beta-D-glucuronopyranosyl-21 beta, 22 alpha-di-O-angeloylprotoaescigenin (8). The EtOH extract of the stem bark showed in vitro cytotoxic activity against KB cells (90% at 10 microg/ml). At a concentration of 5 microg/ml, the saponin mixture showed haemolytic activity and caused 100% haemolysis of a 10% suspension of sheep erythrocytes.
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Affiliation(s)
- Laurence Voutquenne
- Laboratoire de Pharmacognosie, IFR 53 Biomolécules, FRE CNRS 2715, Bât. 18, BP 1039, 51097 Reims Cedex, France.
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Bousserouel H, Litaudon M, Morleo B, Martin MT, Thoison O, Nosjean O, Boutin J, Renard P, Sévenet T. New biologically active linear triterpenes from the bark of three new-caledonian Cupaniopsis species. Tetrahedron 2005. [DOI: 10.1016/j.tet.2004.11.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Thoison O, Sévenet T, Niemeyer HM, Russell GB. Insect antifeedant compounds from Nothofagus dombeyi and N. pumilio. Phytochemistry 2004; 65:2173-2176. [PMID: 15279992 DOI: 10.1016/j.phytochem.2004.04.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2003] [Revised: 03/22/2004] [Indexed: 05/24/2023]
Abstract
A bioassay-guided purification of the extracts of Nothofagus dombeyi and N. pumilio leaves yielded several triterpenes and flavonoids including 2-O-acetylmaslinic acid, 3-O-acetyl 20,24,25-trihydroxydammarane, and 3,20,24,25-tetrahydroxydammarane as new natural products. All the isolated compounds were assessed for antifeeding activity against the 5th instar larvae of Ctenopsteustis obliquana. 12-Hydroxyoleanolic lactone and pectolinarigenin from N. dombeyi and dihydrooroxylin A from N. pumilio, showed significant antifeeding activity.
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Affiliation(s)
- Odile Thoison
- Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, Bat. 27, F-91198, Gif-Sur-Yvette, France
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Waffo-Téguo P, Voutquenne L, Thoison O, Dumontet V, Nguyen VH, Lavaud C. Acetylated glucuronide triterpene bidesmosidic saponins from Symplocos glomerata. Phytochemistry 2004; 65:741-750. [PMID: 15016570 DOI: 10.1016/j.phytochem.2004.01.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2003] [Accepted: 01/15/2004] [Indexed: 05/24/2023]
Abstract
Nine new bidesmosidic 3-O-glucuronide oleanane triterpenoid saponins were isolated from the stem bark of Symplocos glomerata King along with two known saponins, salsoloside C and copteroside E, and two major lignans, (-)-pinoresinol and (-)-pinoresinol-4'-O-beta-D-glucopyranoside. The structures of the new saponins were established using one- and two-dimensional NMR spectroscopy and mass spectrometry as, 3-O-[beta-D-xylopyranosyl(1-->4)-[2-O-acetyl]-beta-D-glucuronopyranosyl]-28-O-[beta-D-glucopyranosyl]-oleanolic acid, 3-O-[beta-D-xylopyranosyl(1-->4)-[3-O-acetyl]-beta-D-glucuronopyranosyl]-28-O-[beta-D-glucopyranosyl]-oleanolic acid, 3-O-[beta-D-xylopyranosyl (1-->4)-[2,3-O-diacetyl]-beta-D-glucuronopyranosyl]-28-O-[beta-D-glucopyranosyl]-oleanolic acid, 3-O-[alpha-L-arabinopyranosyl(1-->4)-beta-D-glucuronopyranosyl]-28-O-[beta-D-glucopyranosyl]-oleanolic acid, 3-O-[alpha-L-arabinopyranosyl (1-->4)-[2-O-acetyl]-beta-D-glucuronopyranosyl]-28-O-[beta-D-glucopyranosyl]-oleanolic acid, 3-O-[[beta-D-xylopyranosyl (1-->2)]-[beta-D-xylopyranosyl (1-->4)]-[3-O-acetyl]-beta-D-glucuronopyranosyl]-28-O-[beta-D-glucopyranosyl]-oleanolic acid, 3-O-[[beta-D-glucopyranosyl (1-->2)]-[beta-D-xylopyranosyl (1-->4)]-[3-O-acetyl]-beta-D-glucuronopyranosyl]-28-O-[beta-D-glucopyranosyl]-oleanolic acid, 3-O-[[beta-D-glucopyranosyl (1-->2)]-[alpha-L-arabinofuranosyl (1-->4)]-[3-O-acetyl]-beta-D-glucuronopyranosyl]-28-O-[beta-D-glucopyranosyl]-oleanolic acid, and 3beta-O-[beta-D-xylopyranosyl(1-->4)-[2-O-acetyl]-beta-D-glucuronopyranosyl]-28-O-[beta-D-glucopyranosyl]-morolic acid. The EtOH and EtOAc extracts of the stem bark showed no cytotoxic activity. At a concentration of 370 microg/ml, the saponin mixture showed haemolytic activity and caused 50% haemolysis of a 10% suspension of sheep erythrocytes.
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Affiliation(s)
- Pierre Waffo-Téguo
- Laboratoire de Pharmacognosie, UMR CNRS 6013 Bât. 18, BP 1039, F-51079 Reims Cedex, France.
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Abstract
Six triterpenoid saponins were isolated from the stem bark of Pometia ridleyi along with two known saponins, acutoside A and calenduloside C. Their structures were established using one- and two-dimensional NMR and mass spectrometry as 3-O-beta-D-apiofuranosyl-(1-->3)-[beta-D-glucopyranosyl-(1-->2)]-beta-D-glucopyranosyl-, 3-O-beta-D-apiofuranosyl-(1-->3)-alpha-L-arabinopyranosyl-(1-->3)-[beta-D-glucopyranosyl-(1-->2)]-beta-D-glucopyranosyl-, 3-O-beta-D-apiofuranosyl-(1-->3)-beta-D-galactopyranosyl-(1-->3)-[beta-D-glucopyranosyl-(1-->2)]-beta-D-glucopyranosyl-, 3-O-alpha-L-arabinopyranosyl-(1-->3)-[beta-D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl-, 3-O-beta-D-galactopyranosyl-(1-->3)-[beta-D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl-, 3-O-beta-D-apiofuranosyl-(1-->3)-beta-D-galactopyranosyl-(1-->3)-[beta-D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl-oleanolic acid. The EtOH and EtOAc extracts of the stem bark showed no cytotoxic activity. At a concentration of 23 microg/ml, the saponin mixture showed haemolytic activity and caused 50% haemolysis of a 10% suspension of sheep erythrocytes.
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Affiliation(s)
- Laurence Voutquenne
- Laboratoire de Pharmacognosie, UMR CNRS 6013, Bât. 18, BP 1039, 51097, Reims Cedex, France.
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Mai LP, Guéritte F, Dumontet V, Tri MV, Hill B, Thoison O, Guénard D, Sévenet T. Cytotoxicity of Rhamnosylanthraquinones and Rhamnosylanthrones from Rhamnus nepalensis. J Nat Prod 2001; 64:1162-1168. [PMID: 11575949 DOI: 10.1021/np010030v] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
An extract of the fruits of Rhamnus nepalensis collected in Hoa Binh Province, Vietnam, was cytotoxic to KB cells. A bioassay-guided fractionation led to the isolation of a series of known anthraquinones and anthrones, one new rhamnosylanthraquinone, 3'-O-acetylfrangulin A (8), several new rhamnosylanthrones, the prinoidin-emodin bianthrones (9A-D), the prinoidin bianthrones (10A,B), and the rhamnepalins (11A-C). A structure-cytotoxic activity relationship study was performed on these isolates and some semisynthetic derivatives.
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MESH Headings
- Animals
- Anthraquinones/chemistry
- Anthraquinones/isolation & purification
- Anthraquinones/pharmacology
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Chromatography, High Pressure Liquid
- Chromatography, Thin Layer
- Drug Screening Assays, Antitumor
- Fruit/chemistry
- Glycosides/chemistry
- Glycosides/isolation & purification
- Glycosides/pharmacology
- Humans
- KB Cells
- Leukemia/chemically induced
- Magnetic Resonance Spectroscopy
- Mice
- Mice, Inbred Strains
- Molecular Structure
- Plant Leaves/chemistry
- Plants, Medicinal/chemistry
- Rhamnaceae/chemistry
- Spectrophotometry, Infrared
- Spectrophotometry, Ultraviolet
- Spectroscopy, Fourier Transform Infrared
- Stereoisomerism
- Structure-Activity Relationship
- Tumor Cells, Cultured/drug effects
- Vietnam
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Affiliation(s)
- L P Mai
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, 91198 Gif-sur-Yvette Cedex, France
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Roux D, Hadi HA, Thoret S, Guénard D, Thoison O, Païs M, Sévenet T. Structure-activity relationship of polyisoprenyl benzophenones from Garcinia pyrifera on the tubulin/microtubule system. J Nat Prod 2000; 63:1070-1076. [PMID: 10978200 DOI: 10.1021/np0000872] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Microtubule disassembly inhibitory properties have been established for the known polyisoprenylated benzophenones xanthochymol (1a) and guttiferone E (1b). The compounds were isolated from the fruits of Garcinia pyrifera collected in Malaysia. A structure-activity relationship study, including natural and semisynthetic derivatives, delineated some structural features necessary for the interaction with tubulin within this compound class.
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Affiliation(s)
- D Roux
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, 91198 Gif-sur-Yvette Cedex, France
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Abstract
Bioassay-guided fractionation of a leaf extract of G. bracteata has yielded six new prenylxanthones, bractatin (1), isobractatin (2), 1-O-methylbractatin (3), 1-O-methylisobractatin (4), 1-O-methyl-8-methoxy-8,8a-dihydrobractatin (5), and 1-O-methylneobractatin (6). The structures of these compounds have been elucidated by spectroscopic means (NMR, MS), literature data, and X-ray crystallographic analysis of 2. These compounds possess significant cytotoxicity against the KB cell line.
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Affiliation(s)
- O Thoison
- Institut de Chimie des Substances Naturelles, Centre National de la Recherche Scientifique, 91198 Gif-sur-Yvette Cedex, France
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David B, Sévenet T, Thoison O, Awang K, Païs M, Wright M, Guénard D. Hemisynthesis of rhazinilam analogues: structure - activity relationships on tubulin-microtubule system. Bioorg Med Chem Lett 1997. [DOI: 10.1016/s0960-894x(97)00391-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Dumontet V, Thoison O, Omobuwajo OR, Martin MT, Perromat G, Chiaroni A, Riche C, Païs M, Sévenet T, Hamid A. Hadi A. New nitrogenous and aromatic derivatives from Aglaia argentea and A. forbesii. Tetrahedron 1996. [DOI: 10.1016/0040-4020(96)00322-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Abstract
Bioassay-guided fractionation of an ethyl acetate extract of Fissistigma lanuginosum led to the isolation of the known chalcone pedicin [1], which inhibited tubulin assembly into microtubules (IC50 value of 300 microM). From the same EtOAc fraction, two new condensed chalcones, fissistin [2] and isofissistin [3], which showed cytotoxicity against KB cells, were also obtained, together with the inactive dihydropedicin [4] and 6,7-dimethoxy-5,8-dihydroxyflavone [5]. In addition, the aminoquinones 6, 8, and 9 were isolated from the alkaloid extract. These compounds were artifacts, prepared by treatment of 1, 4, and 2, respectively, with NH4OH. The structures of the new compounds were elucidated by spectral methods, especially 2D nmr.
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Affiliation(s)
- Y Alias
- Department of Chemistry, University of Malaya, Kuala Lumpur
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Lichius JJ, Thoison O, Montagnac A, Païs M, Guéritte-Voegelein F, Sévenet T, Cosson JP, Hadi AH. Antimitotic and cytotoxic flavonols from Zieridium pseudobtusifolium and Acronychia porteri. J Nat Prod 1994; 57:1012-1016. [PMID: 7964782 DOI: 10.1021/np50109a024] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Bioassay-guided fractionation of the extracts of Zieridium pseudobtusifolium and Acronychia porteri led to the isolation of 5,3'-dihydroxy-3,6,7,8,4'-pentamethoxyflavone [1], which showed activity against (KB) human nasopharyngeal carcinoma cells (IC50 0.04 micrograms/ml) and inhibited tubulin assembly into microtubules (IC50 12 microM). Two other known flavonols, digicitrin [2] and 5-hydroxy-3,6,7,8,3',4'-hexamethoxyflavone [5], were also isolated together with three new ones, 3-O-demethyldigicitrin [3], 3,5,3'-trihydroxy-6,7,8,4'-tetramethoxyflavone [4], and 3,5-dihydroxy-6,7,8,3',4'-pentamethoxyflavone [6]. All of these flavonols showed cytotoxic activity against KB cells.
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Affiliation(s)
- J J Lichius
- Institut de Chimie des Substances Naturelles, CNRS, Gif-sur-Yvette, France
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David B, Sévenet T, Morgat M, Guénard G, Moisand A, Tollon Y, Thoison O, Wright M. Rhazinilam mimics the cellular effects of taxol by different mechanisms of action. Cell Motil Cytoskeleton 1994; 28:317-26. [PMID: 7954858 DOI: 10.1002/cm.970280405] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We have investigated the effects of the microtubule poison rhazinilam on microtubule assembly in vivo and in vitro. In mammalian cells, rhazinilam mimics the effects of taxol and leads to microtubule bundles, multiple asters, and microtubule cold stability. In vitro, rhazinilam protected preassembled microtubules from cold-induced disassembly, but not from calcium ion-induced disassembly. Moreover, both at 0 degrees C and at 37 degrees C, rhazinilam induced the formation of anomalous tubulin assemblies (spirals). This process was prevented by maytansine and vinblastine, but not by colchicine. Preferential saturable and stoichiometric binding of radioactive rhazinilam to tubulin in spirals was observed with a dissociation constant of 5 microM. This binding was abolished in the presence of vinblastine and maytansine. In contrast, specific binding of radioactive rhazinilam to tubulin assembled in microtubules was undetectable. These results demonstrate that rhazinilam alters microtubule stability differently than taxol, and that the overall similar effects of rhazinilam and taxol on the cellular cytoskeleton are the consequence of two distinct mechanisms of action at the molecular level.
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Affiliation(s)
- B David
- CNRS, Laboratoire de Pharmacologie et de Toxicologie Fondamentales, Toulouse, France
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