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Panobinostat Synergistically Enhances the Cytotoxicity of Microtubule Destabilizing Drugs in Ovarian Cancer Cells. Int J Mol Sci 2022; 23:ijms232113019. [PMID: 36361809 PMCID: PMC9657298 DOI: 10.3390/ijms232113019] [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: 09/13/2022] [Revised: 10/13/2022] [Accepted: 10/24/2022] [Indexed: 12/02/2022] Open
Abstract
Ovarian cancer (OC) is one of the most common gynecologic neoplasia and has the highest mortality rate, which is mainly due to late-stage diagnosis and chemotherapy resistance. There is an urgent need to explore new and better therapeutic strategies. We have previously described a family of Microtubule Destabilizing Sulfonamides (MDS) that does not trigger multidrug-mediated resistance in OC cell lines. MDS bind to the colchicine site of tubulin, disrupting the microtubule network and causing antiproliferative and cytotoxic effects. In this work, a novel microtubule-destabilizing agent (PILA9) was synthetized and characterized. This compound also inhibited OC cell proliferation and induced G2/M cell cycle arrest and apoptosis. Interestingly, PILA9 was significantly more cytotoxic than MDS. Here, we also analyzed the effect of these microtubule-destabilizing agents (MDA) in combination with Panobinostat, a pan-histone deacetylase inhibitor. We found that Panobinostat synergistically enhanced MDA-cytotoxicity. Mechanistically, we observed that Panobinostat and MDA induced α-tubulin acetylation and that the combination of both agents enhanced this effect, which could be related to the observed synergy. Altogether, our results suggest that MDA/Panobinostat combinations could represent new therapeutic strategies against OC.
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2
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Mivebresib synergized with PZ703b, a novel Bcl-xl PROTAC degrader, induces apoptosis in bladder cancer cells via the mitochondrial pathway. Biochem Biophys Res Commun 2022; 623:120-126. [DOI: 10.1016/j.bbrc.2022.07.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 07/12/2022] [Indexed: 11/23/2022]
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3
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Lanzi C, Cassinelli G. Combinatorial strategies to potentiate the efficacy of HDAC inhibitors in fusion-positive sarcomas. Biochem Pharmacol 2022; 198:114944. [DOI: 10.1016/j.bcp.2022.114944] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/02/2022] [Accepted: 02/02/2022] [Indexed: 12/12/2022]
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4
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Systemic Treatment of Ewing Sarcoma: Current Options and Future Perspectives. FORUM OF CLINICAL ONCOLOGY 2022. [DOI: 10.2478/fco-2021-0005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract
Ewing sarcoma (ES) is an uncommon malignant neoplasm, mostly affecting young adults and adolescents. Surgical excision, irradiation, and combinations of multiple chemotherapeutic agents are currently used as a multimodal strategy for the treatment of local and oligometastatic disease. Although ES usually responds to the primary treatment, relapsed and primarily refractory disease remains a difficult therapeutic challenge. The growing understanding of cancer biology and the subsequent development of new therapeutic strategies have been put at the service of research in recurrent and refractory ES, generating a great number of ongoing studies with compounds that could find superior clinical outcomes in the years to come. This review gathers the current available information on the treatment and clinical investigation of ES and aims to be a point of support for future research.
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5
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Discovery of novel candidates for anti-liposarcoma therapies by medium-scale high-throughput drug screening. PLoS One 2021; 16:e0248140. [PMID: 33690666 PMCID: PMC7946228 DOI: 10.1371/journal.pone.0248140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 02/21/2021] [Indexed: 12/16/2022] Open
Abstract
Sarcomas are a heterogeneous group of mesenchymal orphan cancers and new treatment alternatives beyond traditional chemotherapeutic regimes are much needed. So far, tumor mutation analysis has not led to significant treatment advances, and we have attempted to bypass this limitation by performing direct drug testing of a library of 353 anti-cancer compounds that are either FDA-approved, in clinical trial, or in advanced stages of preclinical development on a panel of 13 liposarcoma cell lines. We identified and validated six drugs, targeting different mechanisms and with good efficiency across the cell lines: MLN2238 –a proteasome inhibitor, GSK2126458 –a PI3K/mTOR inhibitor, JNJ-26481585 –a histone deacetylase inhibitor, triptolide–a multi-target drug, YM155 –a survivin inhibitor, and APO866 (FK866)–a nicotinamide phosphoribosyl transferase inhibitor. GR50s for those drugs were mostly in the nanomolar range, and in many cases below 10 nM. These drugs had long-lasting effect upon drug withdrawal, limited toxicity to normal cells and good efficacy also against tumor explants. Finally, we identified potential genomic biomarkers of their efficacy. Being approved or in clinical trials, these drugs are promising candidates for liposarcoma treatment.
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6
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Lin Z, Fan Z, Zhang X, Wan J, Liu T. Cellular plasticity and drug resistance in sarcoma. Life Sci 2020; 263:118589. [PMID: 33069737 DOI: 10.1016/j.lfs.2020.118589] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 09/29/2020] [Accepted: 10/07/2020] [Indexed: 12/29/2022]
Abstract
Sarcomas, originating from mesenchymal progenitor stem cells, are a group of rare malignant tumors with poor prognosis. Wide surgical resection, chemotherapy, and radiotherapy are the most common sarcoma treatments. However, sarcomas' response rates to chemotherapy are quite low and sarcoma cells can have intrinsic or acquired resistance after treatment with chemotherapeutics drugs, leading to the development of multi-drug resistance (MDR). Cancer cellular plasticity plays pivotal roles in cancer initiation, progression, therapy resistance and cancer relapse. Moreover, cancer cellular plasticity can be regulated by a multitude of factors, such as genetic and epigenetic alterations, tumor microenvironment (TME) or selective pressure imposed by treatment. Recent studies have demonstrated that cellular plasticity is involved in sarcoma progression and chemoresistance. It's essential to understand the molecular mechanisms of cellular plasticity as well as its roles in sarcoma progression and drug resistance. Therefore, this review focuses on the regulatory mechanisms and pathological roles of these diverse cellular plasticity programs in sarcoma. Additionally, we propose cellular plasticity as novel therapeutic targets to reduce sarcoma drug resistance.
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Affiliation(s)
- Zhengjun Lin
- Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China.
| | - Zhihua Fan
- Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China
| | - Xianghong Zhang
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jia Wan
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Tang Liu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China.
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7
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Boedicker C, Hussong M, Grimm C, Dolgikh N, Meister MT, Enßle JC, Wanior M, Knapp S, Schweiger MR, Fulda S. Co-inhibition of BET proteins and PI3Kα triggers mitochondrial apoptosis in rhabdomyosarcoma cells. Oncogene 2020; 39:3837-3852. [PMID: 32161312 DOI: 10.1038/s41388-020-1229-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/14/2020] [Accepted: 02/17/2020] [Indexed: 12/14/2022]
Abstract
Remodeling transcription by targeting bromodomain and extraterminal (BET) proteins has emerged as promising anticancer strategy. Here, we identify a novel synergistic interaction of the BET inhibitor JQ1 with the PI3Kα-specific inhibitor BYL719 to trigger mitochondrial apoptosis and to suppress tumor growth in models of rhabdomyosarcoma (RMS). RNA-Seq revealed that JQ1/BYL719 co-treatment shifts the overall balance of BCL-2 family gene expression towards apoptosis and upregulates expression of BMF, BCL2L11 (BIM), and PMAIP1 (NOXA) while downregulating BCL2L1 (BCL-xL). These changes were confirmed by qRT-PCR and western blot analysis. Ingenuity pathway analysis (IPA) of RNA-Seq data followed by validation qRT-PCR and western blot identified MYC and FOXO3a as potential transcription factors (TFs) upstream of the observed gene expression pattern. Immunoprecipitation (IP) studies showed that JQ1/BYL719-stimulated increase in BIM expression enhances the neutralization of antiapoptotic BCL-2, BCL-xL, and MCL-1. This promotes the activation of BAK and BAX and caspase-dependent apoptosis, as (1) individual silencing of BMF, BIM, NOXA, BAK, or BAX, (2) overexpression of BCL-2 or MCL-1 or (3) the caspase inhibitor N-Benzyloxycarbonyl-Val-Ala-Asp(O-Me) fluoromethylketone (zVAD.fmk) all rescue JQ1/BYL719-induced cell death. In conclusion, co-inhibition of BET proteins and PI3Kα cooperatively induces mitochondrial apoptosis by proapoptotic re-balancing of BCL-2 family proteins. This discovery opens exciting perspectives for therapeutic exploitation of BET inhibitors in RMS.
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Affiliation(s)
- Cathinka Boedicker
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany
- German Cancer Consortium (DKTK), Partner Site, Frankfurt, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Michelle Hussong
- Laboratory for Epigenomics and Tumor genetics, University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Christina Grimm
- Laboratory for Epigenomics and Tumor genetics, University Hospital Cologne, Cologne, Germany
| | - Nadezda Dolgikh
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany
| | - Michael T Meister
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany
- German Cancer Consortium (DKTK), Partner Site, Frankfurt, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Pediatric Hematology and Oncology, University Hospital Frankfurt, Frankfurt, Germany
| | - Julius C Enßle
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany
| | - Marek Wanior
- Institute for Pharmaceutical Chemistry and BMLS (SGC), Frankfurt, Germany
| | - Stefan Knapp
- German Cancer Consortium (DKTK), Partner Site, Frankfurt, Germany
- Institute for Pharmaceutical Chemistry and BMLS (SGC), Frankfurt, Germany
| | - Michal R Schweiger
- Laboratory for Epigenomics and Tumor genetics, University Hospital Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Simone Fulda
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University, Frankfurt, Germany.
- German Cancer Consortium (DKTK), Partner Site, Frankfurt, Germany.
- German Cancer Research Center (DKFZ), Heidelberg, Germany.
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8
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van Erp AEM, Versleijen-Jonkers YMH, van der Graaf WTA, Fleuren EDG. Targeted Therapy-based Combination Treatment in Rhabdomyosarcoma. Mol Cancer Ther 2019; 17:1365-1380. [PMID: 29967215 DOI: 10.1158/1535-7163.mct-17-1131] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/27/2018] [Accepted: 05/01/2018] [Indexed: 11/16/2022]
Abstract
Targeted therapies have revolutionized cancer treatment; however, progress lags behind in alveolar (ARMS) and embryonal rhabdomyosarcoma (ERMS), a soft-tissue sarcoma mainly occurring at pediatric and young adult age. Insulin-like growth factor 1 receptor (IGF1R)-directed targeted therapy is one of the few single-agent treatments with clinical activity in these diseases. However, clinical effects only occur in a small subset of patients and are often of short duration due to treatment resistance. Rational selection of combination treatments of either multiple targeted therapies or targeted therapies with chemotherapy could hypothetically circumvent treatment resistance mechanisms and enhance clinical efficacy. Simultaneous targeting of distinct mechanisms might be of particular interest in this regard, as this affects multiple hallmarks of cancer at once. To determine the most promising and clinically relevant targeted therapy-based combination treatments for ARMS and ERMS, we provide an extensive overview of preclinical and (early) clinical data concerning a variety of targeted therapy-based combination treatments. We concentrated on the most common classes of targeted therapies investigated in rhabdomyosarcoma to date, including those directed against receptor tyrosine kinases and associated downstream signaling pathways, the Hedgehog signaling pathway, apoptosis pathway, DNA damage response, cell-cycle regulators, oncogenic fusion proteins, and epigenetic modifiers. Mol Cancer Ther; 17(7); 1365-80. ©2018 AACR.
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Affiliation(s)
- Anke E M van Erp
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Winette T A van der Graaf
- Department of Medical Oncology, Radboud University Medical Center, Nijmegen, the Netherlands. .,The Institute of Cancer Research, Division of Clinical Studies, Clinical and Translational Sarcoma Research and The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom
| | - Emmy D G Fleuren
- The Institute of Cancer Research, Division of Clinical Studies, Clinical and Translational Sarcoma Research, Sutton, United Kingdom.
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9
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Nguyen TH, Barr FG. Therapeutic Approaches Targeting PAX3-FOXO1 and Its Regulatory and Transcriptional Pathways in Rhabdomyosarcoma. Molecules 2018; 23:E2798. [PMID: 30373318 PMCID: PMC6278278 DOI: 10.3390/molecules23112798] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/24/2018] [Accepted: 10/26/2018] [Indexed: 02/06/2023] Open
Abstract
Rhabdomyosarcoma (RMS) is a family of soft tissue cancers that are related to the skeletal muscle lineage and predominantly occur in children and young adults. A specific chromosomal translocation t(2;13)(q35;q14) that gives rise to the chimeric oncogenic transcription factor PAX3-FOXO1 has been identified as a hallmark of the aggressive alveolar subtype of RMS. PAX3-FOXO1 cooperates with additional molecular changes to promote oncogenic transformation and tumorigenesis in various human and murine models. Its expression is generally restricted to RMS tumor cells, thus providing a very specific target for therapeutic approaches for these RMS tumors. In this article, we review the recent understanding of PAX3-FOXO1 as a transcription factor in the pathogenesis of this cancer and discuss recent developments to target this oncoprotein for treatment of RMS.
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Affiliation(s)
| | - Frederic G. Barr
- Laboratory of Pathology, National Cancer Institute, 10 Center Drive, Bethesda, MD 20892, USA;
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10
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Heinicke U, Haydn T, Kehr S, Vogler M, Fulda S. BCL-2 selective inhibitor ABT-199 primes rhabdomyosarcoma cells to histone deacetylase inhibitor-induced apoptosis. Oncogene 2018; 37:5325-5339. [DOI: 10.1038/s41388-018-0212-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 11/20/2017] [Accepted: 02/20/2018] [Indexed: 12/11/2022]
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11
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Enßle JC, Boedicker C, Wanior M, Vogler M, Knapp S, Fulda S. Co-targeting of BET proteins and HDACs as a novel approach to trigger apoptosis in rhabdomyosarcoma cells. Cancer Lett 2018; 428:160-172. [PMID: 29709701 DOI: 10.1016/j.canlet.2018.04.032] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 04/20/2018] [Accepted: 04/23/2018] [Indexed: 01/22/2023]
Abstract
Histone acetylation marks exert essential functions in regulating gene expression. These marks are written by histone acetyltransferases (HATs), removed by histone deacetylases (HDACs) and read by e.g. BET proteins. While BET inhibitors are promising new anticancer drugs, little is yet known about their antitumor activity in rhabdomyosarcoma (RMS). We therefore investigated the efficacy of the prototypic BET inhibitor JQ1 alone or in combination with other epigenetic modifiers, namely HDAC inhibitors (HDACIs). Here, we discover a synergistic interaction of the panBET inhibitor JQ1 together with various HDACIs, i.e. Quisinostat (JNJ-26481585), Vorinostat (SAHA), Entinostat (MS-275) and Panobinostat (LBH589), inducing apoptosis in RMS cells, whereas JQ1 as single agent exhibits little cytotoxicity. Calculation of combination index (CI) confirmed the synergism of this combination. Importantly, JQ1 and JNJ-26481585 act in concert to suppress colony formation and to trigger apoptosis in an in vivo model. Mechanistic studies revealed that combination of JQ1 and JNJ-26481585 cooperatively upregulates BIM and BMF, while downregulating BCL-xL. This shifted ratio of pro- and antiapoptotic BCL-2 proteins engages activation of BAX and BAK and increases caspases-3 and -7 activity. Individual silencing of BIM or NOXA, overexpression of BCL-2 or MCL-1 as well as addition of the caspase inhibitor zVAD.fmk significantly rescue JQ1/JNJ-26481585-induced apoptosis. Thus, co-targeting of histone acetylation by concomitant inhibition of HDAC and BET proteins synergistically induces mitochondrial apoptosis by shifting the ratio of pro- and antiapoptotic BCL-2 proteins towards apoptosis. These findings indicate that combinatorial use of BET and HDACIs may represent a promising new strategy for the treatment of RMS.
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Affiliation(s)
- Julius C Enßle
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt, Germany
| | - Cathinka Boedicker
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt, Germany
| | - Marek Wanior
- Institute for Pharmaceutical Chemistry, J.W. Goethe-University and Buchmann Institute for Molecular Life Sciences, Frankfurt, Germany
| | - Meike Vogler
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt, Germany
| | - Stefan Knapp
- German Cancer Consortium (DKTK), Heidelberg, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany; Institute for Pharmaceutical Chemistry, J.W. Goethe-University and Buchmann Institute for Molecular Life Sciences, Frankfurt, Germany
| | - Simone Fulda
- Institute for Experimental Cancer Research in Pediatrics, Goethe-University Frankfurt, Komturstrasse 3a, 60528, Frankfurt, Germany; German Cancer Consortium (DKTK), Heidelberg, Germany; German Cancer Research Center (DKFZ), Heidelberg, Germany.
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12
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AP-1 confers resistance to anti-cancer therapy by activating XIAP. Oncotarget 2018; 9:14124-14137. [PMID: 29581832 PMCID: PMC5865658 DOI: 10.18632/oncotarget.23897] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 10/30/2017] [Indexed: 02/06/2023] Open
Abstract
The underlying cause of treatment failure in many cancer patients is intrinsic and acquired resistance to chemotherapy. Recently, histone deacetylase (HDAC) inhibitors have developed into a promising cancer treatment. However, resistance mechanism induced by HDAC inhibitors remains largely unknown. Here we report that a HDAC inhibitor, JNJ-2648158 induced transcription of XIAP by activating AP-1 expression, which conferring resistance to chemotherapeutics. Our results showed that high expression of c-Fos caused by HDAC inhibitor promoted AP-1 formation during acquired resistance towards chemo-drugs, indicating an extremely poor clinical outcome in breast cancers and liver cancers. Our study reveals a novel regulatory mechanism towards chemo-drug resistance, and suggests that XIAP may serve as a potential therapeutic target in those chemo-resistant cancer cells.
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13
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Xia T, Wang J, Wang Y, Wang Y, Cai J, Wang M, Chen Q, Song J, Yu Z, Huang W, Fang J. Inhibition of autophagy potentiates anticancer property of 20(S)-ginsenoside Rh2 by promoting mitochondria-dependent apoptosis in human acute lymphoblastic leukaemia cells. Oncotarget 2017; 7:27336-49. [PMID: 27027340 PMCID: PMC5053654 DOI: 10.18632/oncotarget.8285] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 03/01/2016] [Indexed: 01/03/2023] Open
Abstract
Acute lymphoblastic leukaemia (ALL) is the most prevalent childhood malignancy. Although most children with ALL are cured, there is still a group of patients for which therapy fails owing to severe toxicities and drug resistance. Ginsenoside Rh2 (GRh2), a major bioactive component isolated from Panax ginseng, has been shown to have a therapeutic effect on some tumors. However, the molecular mechanisms of cell death induced by 20(S)-GRh2 in ALL cells remains unclear. In this study, we showed that 20(S)-GRh2 inhibited the cell growth and induced mitochondria-dependent apoptosis and autophagy. But it has no cytotoxic effect on human normal blood cells. Furthermore, autophagy plays a protective role in 20(S)-GRh2-induced apoptosis in ALL cell lines and human primary ALL cells. We demonstrated that either genetic or pharmacologic inhibition of autophagy could be more effective in reducing viability and enhancing 20(S)-GRh2-induced toxicity than 20(S)-GRh2 treatment alone. In addition, inhibition of autophagy could aggravate mitochondrial ROS generation and mitochondrial damage, and then accelerate mitochondria-dependent apoptosis. Taken together, these results suggest that inhibition of autophagy can sensitize ALL cells towards 20(S)-GRh2. The appropriate inhibition of autophagy could provide a powerful strategy to increase the potency of 20(S)-GRh2 as a novel anticancer agent for ALL therapy.
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Affiliation(s)
- Ting Xia
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, P.R. China
| | - Jiancheng Wang
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Yingnan Wang
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Yuanyuan Wang
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Jianye Cai
- Center for Stem Cell Biology and Tissue Engineering, Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Min Wang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, P.R. China
| | - Qidan Chen
- Department of Chemistry and Pharmacy, Zhuhai College, Jilin University, Zhuhai, P.R. China
| | - Jia Song
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, P.R. China
| | - Ziqi Yu
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, P.R. China
| | - Wei Huang
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, P.R. China
| | - Jianpei Fang
- Department of Pediatrics, Sun Yat-sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, P.R. China.,Key Laboratory of Malignant Tumor Gene Regulation and Target Therapy of Guangdong Higher Education Institutes, Sun Yat-Sen University, Guangzhou, P.R. China
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14
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Tang F, Choy E, Tu C, Hornicek F, Duan Z. Therapeutic applications of histone deacetylase inhibitors in sarcoma. Cancer Treat Rev 2017; 59:33-45. [PMID: 28732326 DOI: 10.1016/j.ctrv.2017.06.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 06/21/2017] [Accepted: 06/23/2017] [Indexed: 02/05/2023]
Abstract
Sarcomas are a rare group of malignant tumors originating from mesenchymal stem cells. Surgery, radiation and chemotherapy are currently the only standard treatments for sarcoma. However, their response rates to chemotherapy are quite low. Toxic side effects and multi-drug chemoresistance make treatment even more challenging. Therefore, better drugs to treat sarcomas are needed. Histone deacetylase inhibitors (HDAC inhibitors, HDACi, HDIs) are epigenetic modifying agents that can inhibit sarcoma growth in vitro and in vivo through a variety of pathways, including inducing tumor cell apoptosis, causing cell cycle arrest, impairing tumor invasion and preventing metastasis. Importantly, preclinical studies have revealed that HDIs can not only sensitize sarcomas to chemotherapy and radiotherapy, but also increase treatment responses when combined with other chemotherapeutic drugs. Several phase I and II clinical trials have been conducted to assess the efficacy of HDIs either as monotherapy or in combination with standard chemotherapeutic agents or targeted therapeutic drugs for sarcomas. Combination regimen for sarcomas appear to be more promising than monotherapy when using HDIs. This review summarizes our current understanding and therapeutic applications of HDIs in sarcomas.
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Affiliation(s)
- Fan Tang
- Sarcoma Biology Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Jackson 1115, Boston, MA 02114, USA; Department of Orthopedics, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Edwin Choy
- Sarcoma Biology Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Jackson 1115, Boston, MA 02114, USA
| | - Chongqi Tu
- Department of Orthopedics, West China Hospital, Sichuan University, 37 Guoxue Road, Chengdu, Sichuan 610041, China
| | - Francis Hornicek
- Sarcoma Biology Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Jackson 1115, Boston, MA 02114, USA
| | - Zhenfeng Duan
- Sarcoma Biology Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Jackson 1115, Boston, MA 02114, USA.
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15
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Concomitant epigenetic targeting of LSD1 and HDAC synergistically induces mitochondrial apoptosis in rhabdomyosarcoma cells. Cell Death Dis 2017; 8:e2879. [PMID: 28617441 PMCID: PMC5520898 DOI: 10.1038/cddis.2017.239] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 03/29/2017] [Accepted: 04/26/2017] [Indexed: 12/22/2022]
Abstract
The lysine-specific demethylase 1 (LSD1) is overexpressed in several cancers including rhabdomyosarcoma (RMS). However, little is yet known about whether or not LSD1 may serve as therapeutic target in RMS. We therefore investigated the potential of LSD1 inhibitors alone or in combination with other epigenetic modifiers such as histone deacetylase (HDAC) inhibitors. Here, we identify a synergistic interaction of LSD1 inhibitors (i.e., GSK690, Ex917) and HDAC inhibitors (i.e., JNJ-26481585, SAHA) to induce cell death in RMS cells. By comparison, LSD1 inhibitors as single agents exhibit little cytotoxicity against RMS cells. Mechanistically, GSK690 acts in concert with JNJ-26481585 to upregulate mRNA levels of the proapoptotic BH3-only proteins BMF, PUMA, BIM and NOXA. This increase in mRNA levels is accompanied by a corresponding upregulation of BMF, PUMA, BIM and NOXA protein levels. Importantly, individual knockdown of either BMF, BIM or NOXA significantly reduces GSK690/JNJ-26481585-mediated cell death. Similarly, genetic silencing of BAK significantly rescues cell death upon GSK690/JNJ-26481585 cotreatment. Also, overexpression of antiapoptotic BCL-2 or MCL-1 significantly protects RMS cells from GSK690/JNJ-26481585-induced cell death. Furthermore, GSK690 acts in concert with JNJ-26481585 to increase activation of caspase-9 and -3. Consistently, addition of the pan-caspase inhibitor N-benzyloxycarbonyl-Val-Ala-Asp-fluoromethylketone (zVAD.fmk) significantly reduces GSK690/JNJ-26481585-mediated cell death. In conclusion, concomitant LSD1 and HDAC inhibition synergistically induces cell death in RMS cells by shifting the ratio of pro- and antiapoptotic BCL-2 proteins in favor of apoptosis, thereby engaging the intrinsic apoptotic pathway. This indicates that combined treatment with LSD1 and HDAC inhibitors is a promising new therapeutic approach in RMS.
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