Ophiobolin A, a sesterterpenoid fungal phytotoxin, displays higher in vitro growth-inhibitory effects in mammalian than in plant cells and displays in vivo antitumor activity

Ophiobolin A, a sesterterpenoid produced by plant pathogenic fungi, was purified from the culture extract of Drechslera gigantea and tested for its growth-inhibitory activity in both plant and mammalian cells. Ophiobolin A induced cell death in Nicotiana tabacum L. cv. Bright Yellow 2 (TBY-2) cells...

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Veröffentlicht in:International journal of oncology 2013-08, Vol.43 (2), p.575-585
Hauptverfasser: BURY, MARINA, NOVO-UZAL, ESTHER, ANDOLFI, ANNA, CIMINI, SARA, WAUTHOZ, NATHALIE, HEFFETER, PETRA, LALLEMAND, BENJAMIN, AVOLIO, FABIANA, DELPORTE, CÉDRIC, CIMMINO, ALESSIO, DUBOIS, JACQUES, VAN ANTWERPEN, PIERRE, ZONNO, MARIA CHIARA, VURRO, MAURIZIO, POUMAY, YVES, BERGER, WALTER, EVIDENTE, ANTONIO, DE GARA, LAURA, KISS, ROBERT, LOCATO, VITTORIA
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container_title International journal of oncology
container_volume 43
creator BURY, MARINA
NOVO-UZAL, ESTHER
ANDOLFI, ANNA
CIMINI, SARA
WAUTHOZ, NATHALIE
HEFFETER, PETRA
LALLEMAND, BENJAMIN
AVOLIO, FABIANA
DELPORTE, CÉDRIC
CIMMINO, ALESSIO
DUBOIS, JACQUES
VAN ANTWERPEN, PIERRE
ZONNO, MARIA CHIARA
VURRO, MAURIZIO
POUMAY, YVES
BERGER, WALTER
EVIDENTE, ANTONIO
DE GARA, LAURA
KISS, ROBERT
LOCATO, VITTORIA
description Ophiobolin A, a sesterterpenoid produced by plant pathogenic fungi, was purified from the culture extract of Drechslera gigantea and tested for its growth-inhibitory activity in both plant and mammalian cells. Ophiobolin A induced cell death in Nicotiana tabacum L. cv. Bright Yellow 2 (TBY-2) cells at concentrations ≥10 μM, with the TBY-2 cells showing typical features of apoptosis-like cell death. At a concentration of 5 μM, ophiobolin A did not affect plant cell viability but prevented cell proliferation. When tested on eight cancer cell lines, concentrations
doi_str_mv 10.3892/ijo.2013.1979
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Ophiobolin A induced cell death in Nicotiana tabacum L. cv. Bright Yellow 2 (TBY-2) cells at concentrations ≥10 μM, with the TBY-2 cells showing typical features of apoptosis-like cell death. At a concentration of 5 μM, ophiobolin A did not affect plant cell viability but prevented cell proliferation. When tested on eight cancer cell lines, concentrations &lt;1 μM of ophiobolin A inhibited growth by 50% after 3 days of culture irrespective of their multidrug resistance (MDR) phenotypes and their resistance levels to pro-apoptotic stimuli. It is, thus, unlikely that ophiobolin A exerts these in vitro growth-inhibitory effects in cancer cells by activating pro-apoptotic processes. Highly proliferative human keratinocytes appeared more sensitive to the growth-inhibitory effects of ophiobolin A than slowly proliferating ones. Ophiobolin A also displayed significant antitumor activity at the level of mouse survival when assayed at 10 mg/kg in the B16F10 mouse melanoma model with lung pseudometastases. Ophiobolin A could, thus, represent a novel scaffold to combat cancer types that display various levels of resistance to pro-apoptotic stimuli and/or various MDR phenotypes.</description><identifier>ISSN: 1019-6439</identifier><identifier>EISSN: 1791-2423</identifier><identifier>DOI: 10.3892/ijo.2013.1979</identifier><identifier>PMID: 23754298</identifier><language>eng</language><publisher>Greece: D.A. 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Ophiobolin A also displayed significant antitumor activity at the level of mouse survival when assayed at 10 mg/kg in the B16F10 mouse melanoma model with lung pseudometastases. Ophiobolin A could, thus, represent a novel scaffold to combat cancer types that display various levels of resistance to pro-apoptotic stimuli and/or various MDR phenotypes.</abstract><cop>Greece</cop><pub>D.A. Spandidos</pub><pmid>23754298</pmid><doi>10.3892/ijo.2013.1979</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record>
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ispartof International journal of oncology, 2013-08, Vol.43 (2), p.575-585
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subjects Animals
Antineoplastic Agents - pharmacology
Apoptosis
Apoptosis - drug effects
Cancer
Cell culture
Cell cycle
Cell growth
Cell Line, Tumor
Cell Proliferation - drug effects
Cell Survival - drug effects
cytotoxicity
Drug Resistance, Neoplasm
Epidemics
Female
Fungi
Humans
Hydrogen Peroxide - metabolism
Hypotheses
in vivo antitumor activity
Keratinocytes - drug effects
Keratinocytes - metabolism
mammalian cells
Melanoma
Metabolites
Mice
Neoplasms - drug therapy
Nicotiana - cytology
ophiobolin A
plant cells
Plant Cells - drug effects
Sesterterpenes - pharmacology
Tobacco
title Ophiobolin A, a sesterterpenoid fungal phytotoxin, displays higher in vitro growth-inhibitory effects in mammalian than in plant cells and displays in vivo antitumor activity
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