Abstract 924: In vitro study of the potential antineoplastic effect of synthetic naphthoquinones in cisplatin-resistant ovarian cancer lineage
Abstract Background: Cancer development has been associated with alterations in polyamine biosynthesis and metabolism, which induce cell proliferation, angiogenesis, expression of genes related to tumor invasion and metastasis; whereas inhibit apoptosis. Based on the strong rational to develop novel...
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Published in | Cancer research (Chicago, Ill.) Vol. 72; no. 8_Supplement; p. 924 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
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15.04.2012
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Abstract | Abstract
Background: Cancer development has been associated with alterations in polyamine biosynthesis and metabolism, which induce cell proliferation, angiogenesis, expression of genes related to tumor invasion and metastasis; whereas inhibit apoptosis. Based on the strong rational to develop novel polyamine depleting molecules, and adding the strategy to have substances that can control cancer through different cellular pathways aiming to bypass the acquisition of drug resistant phenotype by cancer cells; this work aimed to screen, in an ovarian cancer (OVCA) line, 40 novel rationally developed potential anti-cancer compounds, following rapid, high efficient, and low cost synthetic methodologies, then confirmed by spectroscopic techniques. OVCA is the most lethal gynecological malignancy, with high rates of chemoresistance and disease relapse; therefore, supporting the urge to generate novel anti-OVCA agents. Methods: Novel naphthoquinone-derived compounds were rationally designed to act through multiple cellular pathways aiming the avoidance of drug resistant phenotype acquisition by cancer cells, and were synthesized by rapid, efficient and low cost synthetic method. Drugs antineoplastic efficacy (AE) was accessed in OVCAR3, through the evaluation of cellular metabolic viability (CMV) (MTT method). Drugs structures are protected by patent. Cells were cultured in RPMI media supplemented with 10% (v/v) FBS, antibiotics and antifungics, in 5% CO2, until subconfluence; then, 1.5x105 cells/well were subcultured for 72h prior to treatment with drugs in different concentrations (10−4, 10−5, 10−6, 10−7, and 10−8 M). After 24h, CMV was assessed. Experiments in which the lineage was treated with cisplatin, doxorubicin or paclitaxel were run in parallel. The mean and standard-deviation of the absorbancies were used to calculate CMV and drugs IC50 (PrismaGraphPad version 5.1). Findings: We have screened the AE of 40 novel naphtoquinone-derived drugs in OVCAR3; five have decreased its CMV by, at least, 70%, namely: M8 (IC50 1.64x10−5M; CMV decrease of 90%); M10 (IC50 1.37x10−5M; CMV decrease of 96%); M14 (IC50 1.45x10−5M; CMV decrease of 85%); PIC10 (IC50 9.13x10−6M; CMV decrease of 95%); PIC20 (IC50 5.31x10−5M; CMV decrease of 70%). The IC50 for cisplatin, the gold therapy against OVCA was 3.87x10−5M and CMV decrease was 85%. Interpretation: We herein present novel drugs to treat OVCA; whereas PIC 10 is more potent that cisplatin, M8, M10, M14, PIC10 and PIC20 seem to have similar or higher antineoplastic efficacy in treating cisplatin-resistant OVCA. We strongly believe that the present pre-clinical research project is innovative, as it introduces novel anti-OVCA drugs, economically viable and socially important, as it might bring hope to put OVCA treatment in a perspective in which the disease control is a real possibility.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 924. doi:1538-7445.AM2012-924 |
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AbstractList | Abstract
Background: Cancer development has been associated with alterations in polyamine biosynthesis and metabolism, which induce cell proliferation, angiogenesis, expression of genes related to tumor invasion and metastasis; whereas inhibit apoptosis. Based on the strong rational to develop novel polyamine depleting molecules, and adding the strategy to have substances that can control cancer through different cellular pathways aiming to bypass the acquisition of drug resistant phenotype by cancer cells; this work aimed to screen, in an ovarian cancer (OVCA) line, 40 novel rationally developed potential anti-cancer compounds, following rapid, high efficient, and low cost synthetic methodologies, then confirmed by spectroscopic techniques. OVCA is the most lethal gynecological malignancy, with high rates of chemoresistance and disease relapse; therefore, supporting the urge to generate novel anti-OVCA agents. Methods: Novel naphthoquinone-derived compounds were rationally designed to act through multiple cellular pathways aiming the avoidance of drug resistant phenotype acquisition by cancer cells, and were synthesized by rapid, efficient and low cost synthetic method. Drugs antineoplastic efficacy (AE) was accessed in OVCAR3, through the evaluation of cellular metabolic viability (CMV) (MTT method). Drugs structures are protected by patent. Cells were cultured in RPMI media supplemented with 10% (v/v) FBS, antibiotics and antifungics, in 5% CO2, until subconfluence; then, 1.5x105 cells/well were subcultured for 72h prior to treatment with drugs in different concentrations (10−4, 10−5, 10−6, 10−7, and 10−8 M). After 24h, CMV was assessed. Experiments in which the lineage was treated with cisplatin, doxorubicin or paclitaxel were run in parallel. The mean and standard-deviation of the absorbancies were used to calculate CMV and drugs IC50 (PrismaGraphPad version 5.1). Findings: We have screened the AE of 40 novel naphtoquinone-derived drugs in OVCAR3; five have decreased its CMV by, at least, 70%, namely: M8 (IC50 1.64x10−5M; CMV decrease of 90%); M10 (IC50 1.37x10−5M; CMV decrease of 96%); M14 (IC50 1.45x10−5M; CMV decrease of 85%); PIC10 (IC50 9.13x10−6M; CMV decrease of 95%); PIC20 (IC50 5.31x10−5M; CMV decrease of 70%). The IC50 for cisplatin, the gold therapy against OVCA was 3.87x10−5M and CMV decrease was 85%. Interpretation: We herein present novel drugs to treat OVCA; whereas PIC 10 is more potent that cisplatin, M8, M10, M14, PIC10 and PIC20 seem to have similar or higher antineoplastic efficacy in treating cisplatin-resistant OVCA. We strongly believe that the present pre-clinical research project is innovative, as it introduces novel anti-OVCA drugs, economically viable and socially important, as it might bring hope to put OVCA treatment in a perspective in which the disease control is a real possibility.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 103rd Annual Meeting of the American Association for Cancer Research; 2012 Mar 31-Apr 4; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2012;72(8 Suppl):Abstract nr 924. doi:1538-7445.AM2012-924 |
Author | Cerri, Murilo F. Allochio-Filho, João F. Valadão, Iuri C. Guimarães, Isabella S. Rezende, Lucas CD Teixeira, Sarah F. Madeira, Klesia P. Daltoé, Renata D. Herlinger, Alice L. Greco, Sandro J. Rangel, Leticia BA |
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