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Kalla C, Ott G, Finotello F, Niewola-Staszkowska K, Conza GD, Lahn M, van der Veen L, Schüler J, Falkenstern-Ge R, Kopecka J, Riganti C. The highly selective and oral phosphoinositide 3-kinase delta (PI3K-δ) inhibitor roginolisib induces apoptosis in mesothelioma cells and increases immune effector cell composition. Transl Oncol 2024; 43:101857. [PMID: 38412661 PMCID: PMC10907864 DOI: 10.1016/j.tranon.2023.101857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 11/12/2023] [Accepted: 12/03/2023] [Indexed: 02/29/2024] Open
Abstract
Targeting aberrantly expressed kinases in malignant pleural mesothelioma (MPM) is a promising therapeutic strategy. We here investigated the effect of the novel and highly selective Phosphoinositide 3-kinase delta (PI3K-δ) inhibitor roginolisib (IOA-244) on MPM cells and on the immune cells in MPM microenvironment. To this aim, we analyzed the expression of PI3K-δ by immunohistochemistry in specimens from primary MPM, cell viability and death in three different MPM cell lines treated with roginolisib alone and in combination with ipatasertib (AKT inhibitor) and sapanisertib (mTOR inhibitor). In a co-culture model of patient-derived MPM cells, autologous peripheral blood mononuclear cells and fibroblasts, the tumor cell viability and changes in immune cell composition were investigated after treatment of roginolisib with nivolumab and cisplatin. PI3K-δ was detected in 66/89 (74%) MPM tumors and was associated with reduced overall survival (12 vs. 25 months, P=0.0452). Roginolisib induced apoptosis in MPM cells and enhanced the anti-tumor efficacy of AKT and mTOR kinase inhibitors by suppressing PI3K-δ/AKT/mTOR and ERK1/2 signaling. Furthermore, the combination of roginolisib with chemotherapy and immunotherapy re-balanced the immune cell composition, increasing effector T-cells and reducing immune suppressive cells. Overall, roginolisib induces apoptosis in MPM cells and increases the antitumor immune cell effector function when combined with nivolumab and cisplatin. These results provide first insights on the potential of roginolisib as a therapeutic agent in patients with MPM and its potential in combination with established immunotherapy regimen.
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Affiliation(s)
- Claudia Kalla
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376, Stuttgart, Germany; Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Auerbachstrasse 112, 70376, Stuttgart, Germany; Department of Clinical Pharmacology, University Hospital, University of Tuebingen, Auf der Morgenstelle 8, 72076, Tuebingen, Germany
| | - German Ott
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Auerbachstrasse 112, 70376, Stuttgart, Germany
| | - Francesca Finotello
- Department of Molecular Biology, Digital Science Center (DiSC), Universität Innsbruck, Innrain 15, A-6020 Innsbruck, Austria
| | | | - Giusy Di Conza
- iOnctura SA, Avenue Secheron 15, 1202, Geneva, Switzerland
| | - Michael Lahn
- iOnctura SA, Avenue Secheron 15, 1202, Geneva, Switzerland
| | | | - Julia Schüler
- Charles River Germany GmbH, Am Flughafen 12, Freiburg, Germany
| | - Roger Falkenstern-Ge
- Department of Molecular and Pneumonological Oncology, Robert-Bosch-Krankenhaus, Auerbachstrasse 112, 70376, Stuttgart, Germany
| | - Joanna Kopecka
- Department of Oncology, University of Torino, via Nizza 44, 10126, Torino, Italy; Molecular Biotechnology Center "Guido Tarone", via Nizza 44, 10126, Torino, Italy
| | - Chiara Riganti
- Department of Oncology, University of Torino, via Nizza 44, 10126, Torino, Italy; Molecular Biotechnology Center "Guido Tarone", via Nizza 44, 10126, Torino, Italy; Interdepartmental Center "G.Scansetti" for the study of asbestos and other toxic particulates, University of Torino, 10126 Torino, Italy.
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2
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Schelch K, Emminger D, Zitta B, Johnson TG, Kopatz V, Eder S, Ries A, Stefanelli A, Heffeter P, Hoda MA, Hoetzenecker K, Dome B, Berger W, Reid G, Grusch M. Targeting YB-1 via entinostat enhances cisplatin sensitivity of pleural mesothelioma in vitro and in vivo. Cancer Lett 2023; 574:216395. [PMID: 37730104 DOI: 10.1016/j.canlet.2023.216395] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 08/31/2023] [Accepted: 09/11/2023] [Indexed: 09/22/2023]
Abstract
Pleural mesothelioma (PM) is characterized by poor prognosis and limited therapeutic options. Y-box-binding protein 1 (YB-1) was shown to drive growth and migration of PM cells. Here, we evaluated the effect of genetic and pharmacological targeting of YB-1 on PM growth and response to cisplatin and radiation treatment. YB-1 knockdown via siRNA resulted in reduced PM cell growth, which significantly correlated with wt BAP1 and mutant NF2 and P53 status. Entinostat inhibited YB-1 deacetylation and its efficacy correlated with YB-1 knockdown-induced growth inhibition in 20 PM cell lines. Tumor growth inhibition by siRNA as well as entinostat was confirmed in mouse xenotransplant models. Furthermore, both YBX1-targeting siRNA and entinostat enhanced sensitivity to cisplatin and radiation. In particular, entinostat showed strong synergistic interactions with cisplatin which was linked to significantly increased cellular platinum uptake in all investigated cell models. Importantly, in a mouse model, the combination of cisplatin and entinostat also resulted in stronger growth inhibition than each treatment alone. Our study highlights YB-1 as an attractive target in PM and demonstrates that targeting YB-1 via entinostat is a promising approach to enhance cisplatin and radiation sensitivity.
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Affiliation(s)
- Karin Schelch
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria; Department of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; Asbestos and Dust Diseases Research Institute, Gate 3 Hospital Rd, Concord, 2139, Sydney, NSW, Australia
| | - Dominik Emminger
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
| | - Benjamin Zitta
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
| | - Thomas G Johnson
- Asbestos and Dust Diseases Research Institute, Gate 3 Hospital Rd, Concord, 2139, Sydney, NSW, Australia; The University of Sydney, Camperdown, 2006, Sydney, NSW, Australia
| | - Verena Kopatz
- Department of Radiation Oncology, Applied and Translational Radiobiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Sebastian Eder
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
| | - Alexander Ries
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
| | - Alessia Stefanelli
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
| | - Petra Heffeter
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
| | - Mir A Hoda
- Department of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Konrad Hoetzenecker
- Department of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria
| | - Balazs Dome
- Department of Thoracic Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria; National Koranyi Institute of Pulmonology, Korányi Frigyes u. 1, 1122 Budapest, Hungary; Department of Thoracic Surgery, Semmelweis University and National Institute of Oncology, Rath Gyorgy u. 7-9, 1122 Budapest, Hungary
| | - Walter Berger
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria
| | - Glen Reid
- Department of Pathology, Dunedin School of Medicine and the Maurice Wilkins Centre, 56 Hanover Street, Central Dunedin, Dunedin 9016, New Zealand
| | - Michael Grusch
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8a, 1090 Vienna, Austria.
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Steinlein S, Essmann F, Ghilardi AF, Horn H, Schüler J, Hausser A, Sun L, Ott G, Kalla C. Indolyl-chalcone derivatives trigger apoptosis in cisplatin-resistant mesothelioma cells through aberrant tubulin polymerization and deregulation of microtubule-associated proteins. Front Oncol 2023; 13:1190988. [PMID: 37305581 PMCID: PMC10248254 DOI: 10.3389/fonc.2023.1190988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 05/11/2023] [Indexed: 06/13/2023] Open
Abstract
Introduction Malignant pleural mesothelioma (MPM) is a neoplasm with dismal prognosis and notorious resistance to the standard therapeutics cisplatin and pemetrexed. Chalcone derivatives are efficacious anti-cancer agents with minimal toxicity and have, therefore, gained pharmaceutical interest. Here, we investigated the efficacy of CIT-026 and CIT-223, two indolyl-chalcones (CITs), to inhibit growth and viability of MPM cells and defined the mechanism by which the compounds induce cell death. Methods The effects of CIT-026 and CIT-223 were analyzed in five MPM cell lines, using viability, immunofluorescence, real-time cell death monitoring, and tubulin polymerization assays, along with siRNA knockdown. Phospho-kinase arrays and immunoblotting were used to identify signaling molecules that contribute to cell death. Results CIT-026 and CIT-223 were toxic in all cell lines at sub-micromolar concentrations, in particular in MPM cells resistant to cisplatin and pemetrexed, while normal fibroblasts were only modestly affected. Both CITs targeted tubulin polymerization via (1) direct interaction with tubulin and (2) phosphorylation of microtubule regulators STMN1, CRMP2 and WNK1. Formation of aberrant tubulin fibers caused abnormal spindle morphology, mitotic arrest and apoptosis. CIT activity was not reduced in CRMP2-negative and STMN1-silenced MPM cells, indicating that direct tubulin targeting is sufficient for toxic effects of CITs. Discussion CIT-026 and CIT-223 are highly effective inducers of tumor cell apoptosis by disrupting microtubule assembly, with only modest effects on non-malignant cells. CITs are potent anti-tumor agents against MPM cells, in particular cells resistant to standard therapeutics, and thus warrant further evaluation as potential small-molecule therapeutics in MPM.
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Affiliation(s)
- Sophia Steinlein
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Stuttgart, Germany
- Department of Clinical Pharmacology, University Hospital, University of Tuebingen, Tuebingen, Germany
| | - Frank Essmann
- Robert Bosch Center for Tumor Diseases, Stuttgart, Germany
| | - Amanda Franceschini Ghilardi
- Harvard Medical School, Center for Drug Discovery and Translational Research, Department of Surgery, Beth Israel Deaconess Medical Center, Boston, MA, United States
| | - Heike Horn
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Stuttgart, Germany
- Department of Clinical Pharmacology, University Hospital, University of Tuebingen, Tuebingen, Germany
| | | | - Angelika Hausser
- Institute of Cell Biology and Immunology and Stuttgart Research Center for Systems Biology, University of Stuttgart, Stuttgart, Germany
| | - Lijun Sun
- Harvard Medical School, Center for Drug Discovery and Translational Research, Department of Surgery, Beth Israel Deaconess Medical Center, Boston, MA, United States
| | - German Ott
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Stuttgart, Germany
| | - Claudia Kalla
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany
- Department of Clinical Pathology, Robert-Bosch-Krankenhaus, Stuttgart, Germany
- Department of Clinical Pharmacology, University Hospital, University of Tuebingen, Tuebingen, Germany
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Ollila-Raj H, Murumägi A, Pellinen T, Arjama M, Sutinen E, Volmonen K, Haikala HM, Kallioniemi O, Mäyränpää MI, Ilonen I. Novel therapeutic approaches for pleural mesothelioma identified by functional ex vivo drug sensitivity testing. Lung Cancer 2023; 178:213-219. [PMID: 36878102 DOI: 10.1016/j.lungcan.2023.02.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/23/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
OBJECTIVES Pleural mesothelioma (PM) is an aggressive malignancy with limited treatment options. The first-line therapy has remained unchanged for two decades and consists of pemetrexed in combination with cisplatin. Immune-checkpoint inhibitors (nivolumab plus ipilimumab) have high response rates, resulting in recent updates in treatment recommendations by the U.S. Food and Drug Administration. However, the overall benefits of combination treatment are modest, suggesting that other targeted therapy options should be investigated. MATERIALS AND METHODS We employed high-throughput drug sensitivity and resistance testing on five established PM cell lines using 527 cancer drugs in a 2D setting. Drugs of the greatest potential (n = 19) were selected for further testing in primary cell models derived from pleural effusions of seven PM patients. RESULTS All established and primary patient-derived PM cell models were sensitive to the mTOR inhibitor AZD8055. Furthermore, another mTOR inhibitor (temsirolimus) showed efficacy in most of the primary patient-derived cells, although a less robust effect was observed when compared with the established cell lines. Most of the established cell lines and all patient-derived primary cells exhibited sensitivity to the PI3K/mTOR/DNA-PK inhibitor LY3023414. The Chk1 inhibitor prexasertib showed activity in 4/5 (80%) of the established cell lines and in 2/7 (29%) of the patient-derived primary cell lines. The BET family inhibitor JQ1 showed activity in four patient-derived cell models and in one established cell line. CONCLUSION mTOR and Chk1 pathways had promising results with established mesothelioma cell lines in an ex vivo setting. In patient-derived primary cells, drugs targeting mTOR pathway in particular showed efficacy. These findings may inform novel treatment strategies for PM.
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Affiliation(s)
- Hely Ollila-Raj
- Department of Pulmonary Medicine, Heart and Lung Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Finland; iCAN Digital Precision Cancer Medicine Flagship, Finland.
| | - Astrid Murumägi
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Finland
| | - Teijo Pellinen
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Finland
| | - Mariliina Arjama
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Finland
| | - Eva Sutinen
- Department of Pulmonary Medicine, Heart and Lung Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; iCAN Digital Precision Cancer Medicine Flagship, Finland
| | - Kirsi Volmonen
- Radiology, HUS Diagnostic Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Heidi M Haikala
- Translational Immunology Research Program, Faculty of Medicine, University of Helsinki, Finland; iCAN Digital Precision Cancer Medicine Flagship, Finland
| | - Olli Kallioniemi
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Finland; Science for Life Laboratory (SciLifeLab), Department of Oncology and Pathology, Karolinska Institutet, Sweden
| | - Mikko I Mäyränpää
- Department of Pathology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Ilkka Ilonen
- iCAN Digital Precision Cancer Medicine Flagship, Finland; Department of General Thoracic and Esophageal Surgery, Heart and Lung Center, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Targeting anti-apoptotic pathways eliminates senescent melanocytes and leads to nevi regression. Nat Commun 2022; 13:7923. [PMID: 36564381 PMCID: PMC9789033 DOI: 10.1038/s41467-022-35657-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Human melanocytic nevi (moles) result from a brief period of clonal expansion of melanocytes. As a cellular defensive mechanism against oncogene-induced hyperplasia, nevus-resident melanocytes enter a senescent state of stable cell cycle arrest. Senescent melanocytes can persist for months in mice and years in humans with a risk to escape the senescent state and progress to melanoma. The mechanisms providing prolonged survival of senescent melanocytes remain poorly understood. Here, we show that senescent melanocytes in culture and in nevi express high level of the anti-apoptotic BCL-2 family member BCL-W but remain insensitive to the pan-BCL-2 inhibitor ABT-263. We demonstrate that resistance to ABT-263 is driven by mTOR-mediated enhanced translation of another anti-apoptotic member, MCL-1. Strikingly, the combination of ABT-263 and MCL-1 inhibitors results in synthetic lethality to senescent melanocytes, and its topical application sufficient to eliminate nevi in male mice. These data highlight the important role of redundant anti-apoptotic mechanisms for the survival advantage of senescent melanocytes, and the proof-of-concept for a non-invasive combination therapy for nevi removal.
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Ghanim B, Baier D, Pirker C, Müllauer L, Sinn K, Lang G, Hoetzenecker K, Berger W. Trabectedin Is Active against Two Novel, Patient-Derived Solitary Fibrous Pleural Tumor Cell Lines and Synergizes with Ponatinib. Cancers (Basel) 2022; 14:cancers14225602. [PMID: 36428694 PMCID: PMC9688590 DOI: 10.3390/cancers14225602] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 11/05/2022] [Accepted: 11/10/2022] [Indexed: 11/17/2022] Open
Abstract
Solitary fibrous tumor of the pleura (SFT) is a rare disease. Besides surgery combined with radiotherapy in nondisseminated stages, curative options are currently absent. Out of fourteen primo-cell cultures, established from surgical SFT specimens, two showed stable in vitro growth. Both cell models harbored the characteristic NAB2-STAT6 fusion and were further investigated by different preclinical methods assessing cell viability, clone formation, and protein regulation upon single-drug treatment or in response to selected treatment combinations. Both fusion-positive cell models showed-in line with the clinical experience and the literature-a low to moderate response to most of the tested cytotoxic and targeted agents. However, the multi-tyrosine kinase inhibitors ponatinib and dasatinib, as well as the anti-sarcoma compound trabectedin, revealed promising activity against SFT growth. Furthermore, both cell models spontaneously presented strong FGFR downstream signaling targetable by ponatinib. Most interestingly, the combination of either ponatinib or dasatinib with trabectedin showed synergistic effects. In conclusion, this study identified novel trabectedin-based treatment combinations with clinically approved tyrosine kinase inhibitors, using two newly established NAB2-STAT6 fusion-positive cell models. These findings can be the basis for anti-SFT drug repurposing approaches in this rare and therapy-refractory disease.
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Affiliation(s)
- Bahil Ghanim
- Department of Thoracic Surgery, Medical University of Vienna, 1090 Vienna, Austria
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria
- Department of General and Thoracic Surgery, Karl Landsteiner University of Health Sciences, University Hospital Krems, 3500 Krems, Austria
| | - Dina Baier
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria
- Institute of Inorganic Chemistry, University of Vienna, 1090 Vienna, Austria
- Research Cluster “Translational Cancer Therapy Research”, 1090 Vienna, Austria
- Correspondence:
| | - Christine Pirker
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria
| | - Leonhard Müllauer
- Department of Pathology, Medical University of Vienna, 1090 Vienna, Austria
| | - Katharina Sinn
- Department of Thoracic Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Gyoergy Lang
- Department of Thoracic Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Konrad Hoetzenecker
- Department of Thoracic Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Walter Berger
- Center for Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, 1090 Vienna, Austria
- Research Cluster “Translational Cancer Therapy Research”, 1090 Vienna, Austria
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Selvarani R, Mohammed S, Richardson A. Effect of rapamycin on aging and age-related diseases-past and future. GeroScience 2021; 43:1135-1158. [PMID: 33037985 PMCID: PMC8190242 DOI: 10.1007/s11357-020-00274-1] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 09/21/2020] [Indexed: 12/19/2022] Open
Abstract
In 2009, rapamycin was reported to increase the lifespan of mice when implemented later in life. This observation resulted in a sea-change in how researchers viewed aging. This was the first evidence that a pharmacological agent could have an impact on aging when administered later in life, i.e., an intervention that did not have to be implemented early in life before the negative impact of aging. Over the past decade, there has been an explosion in the number of reports studying the effect of rapamycin on various diseases, physiological functions, and biochemical processes in mice. In this review, we focus on those areas in which there is strong evidence for rapamycin's effect on aging and age-related diseases in mice, e.g., lifespan, cardiac disease/function, central nervous system, immune system, and cell senescence. We conclude that it is time that pre-clinical studies be focused on taking rapamycin to the clinic, e.g., as a potential treatment for Alzheimer's disease.
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Affiliation(s)
- Ramasamy Selvarani
- Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Sabira Mohammed
- Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Arlan Richardson
- Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
- Oklahoma City VA Medical Center, Oklahoma City, OK, USA.
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Sato T, Mukai S, Ikeda H, Mishiro-Sato E, Akao K, Kobayashi T, Hino O, Shimono W, Shibagaki Y, Hattori S, Sekido Y. Silencing of SmgGDS, a Novel mTORC1 Inducer That Binds to RHEBs, Inhibits Malignant Mesothelioma Cell Proliferation. Mol Cancer Res 2021; 19:921-931. [PMID: 33574130 DOI: 10.1158/1541-7786.mcr-20-0637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 12/15/2020] [Accepted: 02/04/2021] [Indexed: 11/16/2022]
Abstract
Malignant mesothelioma (MM) is an aggressive tumor that typically develops after a long latency following asbestos exposure. Although mechanistic target of rapamycin complex 1 (mTORC1) activation enhances MM cell growth, the mTORC1 inhibitor everolimus has shown limited efficacy in clinical trials of MM patients. We explored the mechanism underlying mTORC1 activation in MM cells and its effects on cell proliferation and progression. Analysis of the expression profiles of 87 MMs from The Cancer Genome Atlas revealed that 40 samples (46%) displayed altered expression of RPTOR (mTORC1 component) and genes immediately upstream that activate mTORC1. Among them, we focused on RHEB and RHEBL1, which encode direct activators of mTORC1. Exogenous RHEBL1 expression enhanced MM cell growth, indicating that RHEB-mTORC1 signaling acts as a pro-oncogenic cascade. We investigated molecules that directly activate RHEBs, identifying SmgGDS as a novel RHEB-binding protein. SmgGDS knockdown reduced mTORC1 activation and inhibited the proliferation of MM cells with mTORC1 activation. Interestingly, SmgGDS displayed high binding affinity with inactive GDP-bound RHEBL1, and its knockdown reduced cytosolic RHEBL1 without affecting its activation. These findings suggest that SmgGDS retains GDP-bound RHEBs in the cytosol, whereas GTP-bound RHEBs are localized on intracellular membranes to promote mTORC1 activation. We revealed a novel role for SmgGDS in the RHEB-mTORC1 pathway and its potential as a therapeutic target in MM with aberrant mTORC1 activation. IMPLICATIONS: Our data showing that SmgGDS regulates RHEB localization to activate mTORC1 indicate that SmgGDS can be used as a new therapeutic target for MM exhibiting mTORC1 activation.
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Affiliation(s)
- Tatsuhiro Sato
- Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Aichi, Japan
| | - Satomi Mukai
- Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Aichi, Japan
| | - Haruna Ikeda
- Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Aichi, Japan
| | - Emi Mishiro-Sato
- Division of Pathophysiology, Aichi Cancer Center Research Institute, Nagoya, Aichi, Japan
| | - Ken Akao
- Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Aichi, Japan.,Department of Respiratory Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
| | - Toshiyuki Kobayashi
- Department of Molecular Pathogenesis, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Okio Hino
- Department of Molecular Pathogenesis, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Wataru Shimono
- Division of Biochemistry, School of Pharmaceutical Sciences, Kitasato University, Minato-ku, Tokyo, Japan
| | - Yoshio Shibagaki
- Division of Biochemistry, School of Pharmaceutical Sciences, Kitasato University, Minato-ku, Tokyo, Japan
| | - Seisuke Hattori
- Division of Biochemistry, School of Pharmaceutical Sciences, Kitasato University, Minato-ku, Tokyo, Japan
| | - Yoshitaka Sekido
- Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Aichi, Japan. .,Division of Molecular and Cellular Oncology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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9
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TOR Signaling Pathway in Cardiac Aging and Heart Failure. Biomolecules 2021; 11:biom11020168. [PMID: 33513917 PMCID: PMC7911348 DOI: 10.3390/biom11020168] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 02/07/2023] Open
Abstract
Mechanistic Target of Rapamycin (mTOR) signaling is a key regulator of cellular metabolism, integrating nutrient sensing with cell growth. Over the past two decades, studies on the mTOR pathway have revealed that mTOR complex 1 controls life span, health span, and aging by modulating key cellular processes such as protein synthesis, autophagy, and mitochondrial function, mainly through its downstream substrates. Thus, the mTOR pathway regulates both physiological and pathological processes in the heart from embryonic cardiovascular development to maintenance of cardiac homeostasis in postnatal life. In this regard, the dysregulation of mTOR signaling has been linked to many age-related pathologies, including heart failure and age-related cardiac dysfunction. In this review, we highlight recent advances of the impact of mTOR complex 1 pathway and its regulators on aging and, more specifically, cardiac aging and heart failure.
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10
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Xu D, Yang H, Schmid RA, Peng RW. Therapeutic Landscape of Malignant Pleural Mesothelioma: Collateral Vulnerabilities and Evolutionary Dependencies in the Spotlight. Front Oncol 2020; 10:579464. [PMID: 33072611 PMCID: PMC7538645 DOI: 10.3389/fonc.2020.579464] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 09/02/2020] [Indexed: 12/21/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is the epitome of a recalcitrant cancer driven by pharmacologically intractable tumor suppressor proteins. A significant but largely unmet challenge in the field is the translation of genetic information on alterations in tumor suppressor genes (TSGs) into effective cancer-specific therapies. The notion that abnormal tumor genome subverts physiological cellular processes, which creates collateral vulnerabilities contextually related to specific genetic alterations, offers a promising strategy to target TSG-driven MPM. Moreover, emerging evidence has increasingly appreciated the therapeutic potential of genetic and pharmacological dependencies acquired en route to cancer development and drug resistance. Here, we review the most recent progress on vulnerabilities co-selected by functional loss of major TSGs and dependencies evolving out of cancer development and resistance to cisplatin based chemotherapy, the only first-line regimen approved by the US Food and Drug Administration (FDA). Finally, we highlight CRISPR-based functional genomics that has emerged as a powerful platform for cancer drug discovery in MPM. The repertoire of MPM-specific “Achilles heel” rises on the horizon, which holds the promise to elucidate therapeutic landscape and may promote precision oncology for MPM.
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Affiliation(s)
- Duo Xu
- Division of General Thoracic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research (DBMR), Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Haitang Yang
- Division of General Thoracic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research (DBMR), Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ralph A Schmid
- Division of General Thoracic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research (DBMR), Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ren-Wang Peng
- Division of General Thoracic Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.,Department for BioMedical Research (DBMR), Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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11
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Pirker C, Bilecz A, Grusch M, Mohr T, Heidenreich B, Laszlo V, Stockhammer P, Lötsch-Gojo D, Gojo J, Gabler L, Spiegl-Kreinecker S, Dome B, Steindl A, Klikovits T, Hoda MA, Jakopovic M, Samarzija M, Mohorcic K, Kern I, Kiesel B, Brcic L, Oberndorfer F, Müllauer L, Klepetko W, Schmidt WM, Kumar R, Hegedus B, Berger W. Telomerase Reverse Transcriptase Promoter Mutations Identify a Genomically Defined and Highly Aggressive Human Pleural Mesothelioma Subgroup. Clin Cancer Res 2020; 26:3819-3830. [PMID: 32317288 DOI: 10.1158/1078-0432.ccr-19-3573] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 03/13/2020] [Accepted: 04/17/2020] [Indexed: 11/16/2022]
Abstract
PURPOSE Human malignant pleural mesothelioma (MPM) is characterized by dismal prognosis. Consequently, dissection of molecular mechanisms driving malignancy is of key importance. Here we investigate whether activating mutations in the telomerase reverse transcriptase (TERT) gene promoter are present in MPM and associated with disease progression, cell immortalization, and genomic alteration patterns. EXPERIMENTAL DESIGN TERT promoters were sequenced in 182 MPM samples and compared with clinicopathologic characteristics. Surgical specimens from 45 patients with MPM were tested for in vitro immortalization. The respective MPM cell models (N = 22) were analyzed by array comparative genomic hybridization, gene expression profiling, exome sequencing as well as TRAP, telomere length, and luciferase promoter assays. RESULTS TERT promoter mutations were detected in 19 of 182 (10.4%) MPM cases and significantly associated with advanced disease and nonepithelioid histology. Mutations independently predicted shorter overall survival in both histologic MPM subtypes. Moreover, 9 of 9 (100%) mutated but only 13 of 36 (36.1%) wild-type samples formed immortalized cell lines. TERT promoter mutations were associated with enforced promoter activity and TERT mRNA expression, while neither telomerase activity nor telomere lengths were significantly altered. TERT promoter-mutated MPM cases exhibited distinctly reduced chromosomal alterations and specific mutation patterns. While BAP1 mutations/deletions were exclusive with TERT promoter mutations, homozygous deletions at the RBFOX1 and the GSTT1 loci were clearly enriched in mutated cases. CONCLUSIONS TERT promoter mutations independently predict a dismal course of disease in human MPM. The altered genomic aberration pattern indicates that TERT promoter mutations identify a novel, highly aggressive MPM subtype presumably based on a specific malignant transformation process.
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Affiliation(s)
- Christine Pirker
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Agnes Bilecz
- 2nd Institute of Pathology, Semmelweis University, Budapest, Hungary
| | - Michael Grusch
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Thomas Mohr
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Barbara Heidenreich
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
| | - Viktoria Laszlo
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna, Medical University Vienna, Austria
- Department of Tumor Biology, National Koranyi Institute of Pulmonology, Semmelweis University, Budapest, Hungary
| | - Paul Stockhammer
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna, Medical University Vienna, Austria
| | - Daniela Lötsch-Gojo
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Johannes Gojo
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Vienna, Austria
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Lisa Gabler
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Sabine Spiegl-Kreinecker
- Department of Neurosurgery, Neuromed Campus, Kepler University Hospital, Johannes Kepler University, Linz, Austria
| | - Balazs Dome
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna, Medical University Vienna, Austria
- Department of Tumor Biology, National Koranyi Institute of Pulmonology, Semmelweis University, Budapest, Hungary
- Department of Thoracic Surgery, Semmelweis University and National Institute of Oncology, Budapest, Hungary
| | - Ariane Steindl
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna, Medical University Vienna, Austria
| | - Thomas Klikovits
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna, Medical University Vienna, Austria
| | - Mir Alireza Hoda
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna, Medical University Vienna, Austria
| | - Marko Jakopovic
- Department for Respiratory Diseases Jordanovac, University Hospital Center, University of Zagreb, Zagreb, Croatia
| | - Miroslav Samarzija
- Department for Respiratory Diseases Jordanovac, University Hospital Center, University of Zagreb, Zagreb, Croatia
| | - Katja Mohorcic
- University Clinic of Respiratory and Allergic Diseases, Golnik, Slovenia
| | - Izidor Kern
- University Clinic of Respiratory and Allergic Diseases, Golnik, Slovenia
| | - Barbara Kiesel
- Department of Neurosurgery, Medical University of Vienna, Vienna, Austria
| | - Luka Brcic
- Medical University of Graz, Diagnostic and Research Institute of Pathology, Graz, Austria
| | | | - Leonhard Müllauer
- Clinical Institute of Pathology, Medical University of Vienna, Vienna, Austria
| | - Walter Klepetko
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna, Medical University Vienna, Austria
| | - Wolfgang M Schmidt
- Center for Anatomy and Cell Biology, Neuromuscular Research Department, Medical University of Vienna, Vienna, Austria
| | - Rajiv Kumar
- Division of Molecular Genetic Epidemiology, German Cancer Research Center, Heidelberg, Germany
| | - Balazs Hegedus
- 2nd Institute of Pathology, Semmelweis University, Budapest, Hungary.
- Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna, Medical University Vienna, Austria
- Department of Thoracic Surgery, Ruhrlandklinik, University Duisburg-Essen, Essen, Germany
| | - Walter Berger
- Institute of Cancer Research and Comprehensive Cancer Center, Department of Medicine I, Medical University of Vienna, Vienna, Austria.
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12
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Yurova MN. The Use of Geroprotective Agents (mTOR Inhibitors) in the Treatment of Cancer Patients. ADVANCES IN GERONTOLOGY 2020. [DOI: 10.1134/s2079057020030170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Johnson TG, Schelch K, Mehta S, Burgess A, Reid G. Why Be One Protein When You Can Affect Many? The Multiple Roles of YB-1 in Lung Cancer and Mesothelioma. Front Cell Dev Biol 2019; 7:221. [PMID: 31632972 PMCID: PMC6781797 DOI: 10.3389/fcell.2019.00221] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 09/18/2019] [Indexed: 12/14/2022] Open
Abstract
Lung cancers and malignant pleural mesothelioma (MPM) have some of the worst 5-year survival rates of all cancer types, primarily due to a lack of effective treatment options for most patients. Targeted therapies have shown some promise in thoracic cancers, although efficacy is limited only to patients harboring specific mutations or target expression. Although a number of actionable mutations have now been identified, a large population of thoracic cancer patients have no therapeutic options outside of first-line chemotherapy. It is therefore crucial to identify alternative targets that might lead to the development of new ways of treating patients diagnosed with these diseases. The multifunctional oncoprotein Y-box binding protein-1 (YB-1) could serve as one such target. Recent studies also link this protein to many inherent behaviors of thoracic cancer cells such as proliferation, invasion, metastasis and involvement in cancer stem-like cells. Here, we review the regulation of YB-1 at the transcriptional, translational, post-translational and sub-cellular levels in thoracic cancer and discuss its potential use as a biomarker and therapeutic target.
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Affiliation(s)
- Thomas G Johnson
- Asbestos Diseases Research Institute, Sydney, NSW, Australia.,Cell Division Laboratory, The ANZAC Research Institute, Sydney, NSW, Australia.,School of Medicine, The University of Sydney, Sydney, NSW, Australia.,Sydney Catalyst Translational Cancer Research Centre, The University of Sydney, Sydney, NSW, Australia
| | - Karin Schelch
- Institute of Cancer Research, Medical University of Vienna, Vienna, Austria
| | - Sunali Mehta
- Department of Pathology, University of Otago, Dunedin, New Zealand.,Maurice Wilkins Centre, University of Otago, Dunedin, New Zealand
| | - Andrew Burgess
- Cell Division Laboratory, The ANZAC Research Institute, Sydney, NSW, Australia.,School of Medicine, The University of Sydney, Sydney, NSW, Australia
| | - Glen Reid
- Department of Pathology, University of Otago, Dunedin, New Zealand.,Maurice Wilkins Centre, University of Otago, Dunedin, New Zealand
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14
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Mönch D, Bode-Erdmann S, Kalla J, Sträter J, Schwänen C, Falkenstern-Ge R, Klumpp S, Friedel G, Ott G, Kalla C. A subgroup of pleural mesothelioma expresses ALK protein and may be targetable by combined rapamycin and crizotinib therapy. Oncotarget 2018; 9:20781-20794. [PMID: 29755689 PMCID: PMC5945506 DOI: 10.18632/oncotarget.25111] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 03/12/2018] [Indexed: 02/07/2023] Open
Abstract
Malignant pleural mesothelioma (MPM) is a neoplasm with inferior prognosis and notorious chemotherapeutic resistance. Targeting aberrantly overexpressed kinases to cure MPM is a promising therapeutic strategy. Here, we examined ALK, MET and mTOR as potential therapeutic targets and determined the combinatorial efficacy of ALK and mTOR targeting on tumor cell growth in vivo. First, ALK overexpression, rearrangement and mutation were studied in primary MPM by qRT-PCR, FISH, immunohistochemistry and sequence analysis; mTOR and MET expression by qRT-PCR and immunohistochemistry. Overexpression of full-length ALK transcripts was observed in 25 (19.5%) of 128 primary MPM, of which ten expressed ALK protein. ALK overexpression was not associated with gene rearrangement, amplification or kinase-domain mutation. mTOR protein was detected in 28.7% MPM, co-expressed with ALK or MET in 5% and 15% MPM, respectively. The ALK/MET inhibitor crizotinib enhanced the anti-tumor effect of the mTOR-inhibitor rapamycin in a patient-derived MPM xenograft with co-activated ALK/mTOR: combined therapy achieved tumor shrinkage in 4/5 tumors and growth stagnation in one tumor. Treatment effects on proliferation, apoptosis, autophagy and pathway signaling were assessed using Ki-67 immunohistochemistry, TUNEL assay, LC3B immunofluorescence, and immunoblotting. Co-treatment significantly suppressed cell proliferation and induced autophagy and caspase-independent, necrotic cell death. Rapamycin/crizotinib simultaneously inhibited mTORC1 (evidenced by S6 kinase and RPS6 dephosphorylation) and ALK signaling (ALK, AKT, STAT3 dephosphorylation), and crizotinib suppressed the adverse AKT activation induced by rapamycin. In conclusion, co-treatment with rapamycin and crizotinib is effective in suppressing MPM tumor growth and should be further explored as a therapeutic alternative in mesothelioma.
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Affiliation(s)
- Dina Mönch
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, 70376 Stuttgart, Germany.,Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany.,University of Tübingen, 72074 Tübingen, Germany
| | - Sabine Bode-Erdmann
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, 70376 Stuttgart, Germany.,Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
| | - Jörg Kalla
- Institute of Pathology, Schwarzwald-Baar-Klinikum, 78052 Villingen-Schwenningen, Germany
| | - Jörn Sträter
- Institute of Pathology, 73730 Esslingen, Germany
| | - Carsten Schwänen
- Clinic of Internal Medicine, Oncology/Hematology, Gastroenterology and Infectiology, Klinikum Esslingen, 73730 Esslingen, Germany
| | - Roger Falkenstern-Ge
- Center for Pulmonology and Thoracic Surgery, Klinik Schillerhöhe, 70839 Stuttgart-Gerlingen, Germany
| | - Siegfried Klumpp
- Hospital Pharmacy, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
| | - Godehard Friedel
- Center for Pulmonology and Thoracic Surgery, Klinik Schillerhöhe, 70839 Stuttgart-Gerlingen, Germany
| | - German Ott
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, 70376 Stuttgart, Germany.,Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany
| | - Claudia Kalla
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, 70376 Stuttgart, Germany.,Department of Clinical Pathology, Robert-Bosch-Krankenhaus, 70376 Stuttgart, Germany.,University of Tübingen, 72074 Tübingen, Germany
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15
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Achkar IW, Abdulrahman N, Al-Sulaiti H, Joseph JM, Uddin S, Mraiche F. Cisplatin based therapy: the role of the mitogen activated protein kinase signaling pathway. J Transl Med 2018; 16:96. [PMID: 29642900 PMCID: PMC5896132 DOI: 10.1186/s12967-018-1471-1] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 04/02/2018] [Indexed: 12/19/2022] Open
Abstract
Cisplatin is a widely used chemotherapeutic agent for treatment of various cancers. However, treatment with cisplatin is associated with drug resistance and several adverse side effects such as nephrotoxicity, reduced immunity towards infections and hearing loss. A Combination of cisplatin with other drugs is an approach to overcome drug resistance and reduce toxicity. The combination therapy also results in increased sensitivity of cisplatin towards cancer cells. The mitogen activated protein kinase (MAPK) pathway in the cell, consisting of extracellular signal regulated kinase, c-Jun N-terminal kinase, p38 kinases, and downstream mediator p90 ribosomal s6 kinase (RSK); is responsible for the regulation of various cellular events including cell survival, cell proliferation, cell cycle progression, cell migration and protein translation. This review article demonstrates the role of MAPK pathway in cisplatin based therapy, illustrates different combination therapy involving cisplatin and also shows the importance of targeting MAPK family, particularly RSK, to achieve increased anticancer effect and overcome drug resistance when combined with cisplatin.
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Affiliation(s)
- Iman W Achkar
- Translational Research Institute, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | | | - Hend Al-Sulaiti
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar
| | | | - Shahab Uddin
- Translational Research Institute, Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar
| | - Fatima Mraiche
- College of Pharmacy, Qatar University, P.O. Box 2713, Doha, Qatar.
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16
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Schelch K, Wagner C, Hager S, Pirker C, Siess K, Lang E, Lin R, Kirschner MB, Mohr T, Brcic L, Marian B, Holzmann K, Grasl-Kraupp B, Krupitza G, Laszlo V, Klikovits T, Dome B, Hegedus B, Garay T, Reid G, van Zandwijk N, Klepetko W, Berger W, Grusch M, Hoda MA. FGF2 and EGF induce epithelial–mesenchymal transition in malignant pleural mesothelioma cells via a MAPKinase/MMP1 signal. Carcinogenesis 2018; 39:534-545. [DOI: 10.1093/carcin/bgy018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 02/02/2018] [Indexed: 11/14/2022] Open
Affiliation(s)
- Karin Schelch
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
- Asbestos Diseases Research Institute (ADRI), Sydney, NSW, Australia
| | - Christina Wagner
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Sonja Hager
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Christine Pirker
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Katharina Siess
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Elisabeth Lang
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Ruby Lin
- Asbestos Diseases Research Institute (ADRI), Sydney, NSW, Australia
- School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia
| | | | - Thomas Mohr
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Luka Brcic
- Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Brigitte Marian
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Klaus Holzmann
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Bettina Grasl-Kraupp
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Georg Krupitza
- Department of Clinical Pathology, Medical University of Vienna, Vienna, Austria
| | - Viktoria Laszlo
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Thomas Klikovits
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna
| | - Balazs Dome
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna
- Department of Tumor Biology, National Koranyi Institute of Pulmonology, Budapest, Hungary
- Department of Thoracic Surgery, National Institute of Oncology and Semmelweis University, Budapest, Hungary
| | - Balazs Hegedus
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna
- MTA-SE Molecular Oncology Research Group, Hungarian Academy of Sciences, Budapest, Hungary
- Department of Thoracic Surgery, Ruhrlandklinik, University Clinic Essen, University of Duisburg-Essen, Essen, Germany
| | - Tamas Garay
- MTA-SE Molecular Oncology Research Group, Hungarian Academy of Sciences, Budapest, Hungary
| | - Glen Reid
- Asbestos Diseases Research Institute (ADRI), Sydney, NSW, Australia
- School of Medicine, University of Sydney, NSW, Australia
| | - Nico van Zandwijk
- Asbestos Diseases Research Institute (ADRI), Sydney, NSW, Australia
- School of Medicine, University of Sydney, NSW, Australia
| | - Walter Klepetko
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna
| | - Walter Berger
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Michael Grusch
- Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center Vienna, Medical University of Vienna, Vienna, Austria
| | - Mir Alireza Hoda
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center Vienna
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17
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Zauderer MG. Standard Chemotherapy Options and Clinical Trials of Novel Agents for Mesothelioma. ASBESTOS AND MESOTHELIOMA 2017. [DOI: 10.1007/978-3-319-53560-9_15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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18
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Hoda MA, Pirker C, Dong Y, Schelch K, Heffeter P, Kryeziu K, van Schoonhoven S, Klikovits T, Laszlo V, Rozsas A, Ozsvar J, Klepetko W, Döme B, Grusch M, Hegedüs B, Berger W. Trabectedin Is Active against Malignant Pleural Mesothelioma Cell and Xenograft Models and Synergizes with Chemotherapy and Bcl-2 Inhibition In Vitro. Mol Cancer Ther 2016; 15:2357-2369. [PMID: 27512118 DOI: 10.1158/1535-7163.mct-15-0846] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 07/26/2016] [Indexed: 11/16/2022]
Abstract
Malignant pleural mesothelioma (MPM) is characterized by widespread resistance to systemic therapy. Trabectedin is an antineoplastic agent targeting both the malignant cells and the tumor microenvironment that has been approved for the treatment of advanced soft tissue sarcoma and ovarian cancer. In this preclinical study, we evaluated the antineoplastic potential of trabectedin as a single agent and in drug combination approaches in human MPM. Therefore, we utilized an extended panel of MPM cell lines (n = 6) and primary cell cultures from surgical MPM specimens (n = 13), as well as nonmalignant pleural tissue samples (n = 2). Trabectedin exerted a dose-dependent cytotoxic effect in all MPM cell cultures in vitro when growing as adherent monolayers or nonadherent spheroids with IC50 values ≤ 2.6 nmol/L. Nonmalignant mesothelial cells were significantly less responsive. The strong antimesothelioma activity was based on cell-cycle perturbation and apoptosis induction. The activity of trabectedin against MPM cells was synergistically enhanced by coadministration of cisplatin, a drug routinely used for systemic MPM treatment. Comparison of gene expression signatures indicated an inverse correlation between trabectedin response and bcl-2 expression. Accordingly, bcl-2 inhibitors (Obatoclax, ABT-199) markedly synergized with trabectedin paralleled by deregulated expression of the bcl-2 family members bcl-2, bim, bax, Mcl-1, and bcl-xL as a consequence of trabectedin exposure. In addition, trabectedin exerted significant antitumor activity against an intraperitoneal MPM xenograft model. Together, these data suggest that trabectedin exerts strong activity in MPM and synergizes with chemotherapy and experimental bcl-2 inhibitors in vitro Thus, it represents a promising new therapeutic option for MPM. Mol Cancer Ther; 15(10); 2357-69. ©2016 AACR.
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Affiliation(s)
- Mir A Hoda
- Applied and Experimental Oncology, Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria. Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria
| | - Christine Pirker
- Applied and Experimental Oncology, Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Yawen Dong
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria
| | - Karin Schelch
- Applied and Experimental Oncology, Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria. Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria
| | - Petra Heffeter
- Applied and Experimental Oncology, Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Kushtrim Kryeziu
- Applied and Experimental Oncology, Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Sushilla van Schoonhoven
- Applied and Experimental Oncology, Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Thomas Klikovits
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria
| | - Viktoria Laszlo
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria
| | - Anita Rozsas
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria. National Koranyi Institute of Pulmonology, Budapest, Hungary
| | - Judit Ozsvar
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria
| | - Walter Klepetko
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria
| | - Balazs Döme
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria. National Koranyi Institute of Pulmonology, Budapest, Hungary. Department of Thoracic Surgery, National Institute of Oncology and Semmelweis University, Budapest, Hungary. Department of Biomedical Imaging and Image-guided Therapy, Division of Molecular and Gender Imaging, Medical University of Vienna, Vienna, Austria
| | - Michael Grusch
- Applied and Experimental Oncology, Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Balazs Hegedüs
- Translational Thoracic Oncology Laboratory, Division of Thoracic Surgery, Department of Surgery, Comprehensive Cancer Center, Medical University Vienna, Vienna, Austria. MTA-SE Molecular Oncology Research Group, Hungarian Academy of Sciences, Budapest, Hungary
| | - Walter Berger
- Applied and Experimental Oncology, Institute of Cancer Research, Department of Medicine I, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria.
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19
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Barbone D, Follo C, Echeverry N, Gerbaudo VH, Klabatsa A, Bueno R, Felley-Bosco E, Broaddus VC. Autophagy Correlates with the Therapeutic Responsiveness of Malignant Pleural Mesothelioma in 3D Models. PLoS One 2015; 10:e0134825. [PMID: 26284517 PMCID: PMC4540424 DOI: 10.1371/journal.pone.0134825] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 07/14/2015] [Indexed: 11/19/2022] Open
Abstract
Malignant pleural mesothelioma is a highly chemoresistant solid tumor. We have studied this apoptotic resistance using in vitro and ex vivo three-dimensional models, which acquire a high level of chemoresistance that can be reduced by PI3K/mTOR inhibitors. Here, we investigate the activity of GDC-0980, a novel dual PI3K/mTOR inhibitor, which has been proposed to be effective in mesothelioma. In this work, we aimed to identify mechanisms and markers of efficacy for GDC-0980 by utilizing 3D models of mesothelioma, both in vitro multicellular spheroids and ex vivo tumor fragment spheroids grown from patient tumor samples. We found that a subset of mesothelioma spheroids is sensitive to GDC-0980 alone and to its combination with chemotherapy. Unexpectedly, this sensitivity did not correlate with the activation of the Akt/mTOR pathway. Instead, sensitivity to GDC-0980 correlated with the presence of constitutive ATG13 puncta, a feature of autophagy, a cellular program that supports cells under stress. In tumor fragment spheroids grown from 21 tumors, we also found a subset (n = 11) that was sensitive to GDC-0980, a sensitivity that also correlated with the presence of ATG13 puncta. Interference with autophagy by siRNA of ATG7, an essential autophagic protein, increased the response to chemotherapy, but only in the sensitive multicellular spheroids. In the spheroids resistant to GDC-0980, autophagy appeared to play no role. In summary, we show that GDC-0980 is effective in mesothelioma 3D models that display ATG13 puncta, and that blockade of autophagy increases their response to chemotherapy. For the first time, we show a role for autophagy in the response to chemotherapy of 3D models of mesothelioma and propose ATG13 as a potential biomarker of the therapeutic responsiveness of mesothelioma.
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Affiliation(s)
- Dario Barbone
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, San Francisco General Hospital, University of California San Francisco, San Francisco, California, 94110, United States of America
| | - Carlo Follo
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, San Francisco General Hospital, University of California San Francisco, San Francisco, California, 94110, United States of America
| | - Nohemy Echeverry
- Clinic of Oncology, University Hospital Zurich, 8044 Zurich, Switzerland
| | - Victor H. Gerbaudo
- Division of Nuclear Medicine & Molecular Imaging, Department of Radiology, Brigham & Women's Hospital and Harvard Medical School, Boston, Massachusetts, 02115, United States of America
| | - Astero Klabatsa
- Department of Research Oncology, King's College London, London, United Kingdom
| | - Raphael Bueno
- Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, 02115, United States of America
| | | | - V. Courtney Broaddus
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, San Francisco General Hospital, University of California San Francisco, San Francisco, California, 94110, United States of America
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20
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Vazakidou ME, Magkouta S, Moschos C, Psallidas I, Pappas A, Psarra K, Kalomenidis I. Temsirolimus targets multiple hallmarks of cancer to impede mesothelioma growth in vivo. Respirology 2015; 20:1263-71. [PMID: 26245309 DOI: 10.1111/resp.12604] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 04/16/2015] [Accepted: 05/03/2015] [Indexed: 01/06/2023]
Abstract
BACKGROUND AND OBJECTIVE The mechanistic target of rapamycin (mTOR) promotes cancer cell proliferation and survival, transduces pro-angiogenic signals and regulates immune cell differentiation and function. We hypothesized that temsirolimus, an mTOR inhibitor, would curtail experimental mesothelioma progression in vivo by limiting tumour cell growth, abrogating tumour angiogenesis and modulating immune/inflammatory tumour milieu. METHODS We produced flank and pleural syngeneic murine mesotheliomas by delivering AE17 and AB1 murine mesothelioma cells into the right flank or the pleural space of C57BL/6 and BALB/c mice, respectively. Animals were given five times/week intraperitoneal injections of 20 mg/kg temsirolimus or vehicle and were sacrificed on day 26 (flank) or on day 15 (pleural) post-tumour cell propagation. RESULTS Temsirolimus limited mesothelioma growth in vivo by stimulating tumour cell apoptosis, inhibiting tumour angiogenesis, enhancing tumour lymphocyte abundance and blocking pro-tumour myeloid cell recruitment. Pleural fluid accumulation was significantly mitigated in AE17 but not in AB1 mesotheliomas. In vitro, temsirolimus hindered mesothelioma cell growth, NF-kappaB activation and macrophage migration. CONCLUSIONS In conclusion, temsirolimus apart from inducing tumour cell apoptosis, targets tumour angiogenesis and influences inflammatory tumour microenvironment to halt experimental mesothelioma growth in vivo.
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Affiliation(s)
- Maria Eleni Vazakidou
- 'Marianthi Simou Laboratory', 1st Department of Critical Care and Pulmonary Medicine, National and Kapodistrian University of Athens, School of Medicine, Evangelismos Hospital, Athens, Greece
| | - Sophia Magkouta
- 'Marianthi Simou Laboratory', 1st Department of Critical Care and Pulmonary Medicine, National and Kapodistrian University of Athens, School of Medicine, Evangelismos Hospital, Athens, Greece
| | - Charalampos Moschos
- 'Marianthi Simou Laboratory', 1st Department of Critical Care and Pulmonary Medicine, National and Kapodistrian University of Athens, School of Medicine, Evangelismos Hospital, Athens, Greece
| | - Ioannis Psallidas
- 'Marianthi Simou Laboratory', 1st Department of Critical Care and Pulmonary Medicine, National and Kapodistrian University of Athens, School of Medicine, Evangelismos Hospital, Athens, Greece.,Oxford Centre for Respiratory Medicine, Churchill Hospital, Oxford, UK.,Oxford Respiratory Trials Unit, Churchill Hospital, Oxford, UK
| | - Apostolos Pappas
- 'Marianthi Simou Laboratory', 1st Department of Critical Care and Pulmonary Medicine, National and Kapodistrian University of Athens, School of Medicine, Evangelismos Hospital, Athens, Greece
| | - Katherina Psarra
- Department of Immunology-Histocompatibility, Evangelismos Hospital, Athens, Greece
| | - Ioannis Kalomenidis
- 'Marianthi Simou Laboratory', 1st Department of Critical Care and Pulmonary Medicine, National and Kapodistrian University of Athens, School of Medicine, Evangelismos Hospital, Athens, Greece
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21
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Pignochino Y, Dell'Aglio C, Inghilleri S, Zorzetto M, Basiricò M, Capozzi F, Canta M, Piloni D, Cemmi F, Sangiolo D, Gammaitoni L, Soster M, Marchiò S, Pozzi E, Morbini P, Luisetti M, Aglietta M, Grignani G, Stella GM. The combination of sorafenib and everolimus shows antitumor activity in preclinical models of malignant pleural mesothelioma. BMC Cancer 2015; 15:374. [PMID: 25952930 PMCID: PMC4429519 DOI: 10.1186/s12885-015-1363-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Accepted: 04/24/2015] [Indexed: 12/21/2022] Open
Abstract
Background Malignant Pleural Mesothelioma (MPM) is an aggressive tumor arising from mesothelial cells lining the pleural cavities characterized by resistance to standard therapies. Most of the molecular steps responsible for pleural transformation remain unclear; however, several growth factor signaling cascades are known to be altered during MPM onset and progression. Transducers of these pathways, such as PIK3CA-mTOR-AKT, MAPK, and ezrin/radixin/moesin (ERM) could therefore be exploited as possible targets for pharmacological intervention. This study aimed to identify ‘druggable’ pathways in MPM and to formulate a targeted approach based on the use of commercially available molecules, such as the multikinase inhibitor sorafenib and the mTOR inhibitor everolimus. Methods We planned a triple approach based on: i) analysis of immunophenotypes and mutational profiles in a cohort of thoracoscopic MPM samples, ii) in vitro pharmacological assays, ii) in vivo therapeutic approaches on MPM xenografts. No mutations were found in ‘hot spot’ regions of the mTOR upstream genes (e.g. EGFR, KRAS and PIK3CA). Results Phosphorylated mTOR and ERM were specifically overexpressed in the analyzed MPM samples. Sorafenib and everolimus combination was effective in mTOR and ERM blockade; exerted synergistic effects on the inhibition of MPM cell proliferation; triggered ROS production and consequent AMPK-p38 mediated-apoptosis. The antitumor activity was displayed when orally administered to MPM-bearing NOD/SCID mice. Conclusions ERM and mTOR pathways are activated in MPM and ‘druggable’ by a combination of sorafenib and everolimus. Combination therapy is a promising therapeutic strategy against MPM. Electronic supplementary material The online version of this article (doi:10.1186/s12885-015-1363-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ymera Pignochino
- Division of Medical Oncology, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Carmine Dell'Aglio
- Division of Medical Oncology, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Simona Inghilleri
- Department of Molecular Medicine, - Section of Pneumology, Laboratory of Biochemistry & Genetics, University and Fondazione IRCCS Policlinico San Matteo, Pavia, 27100, Italy.
| | - Michele Zorzetto
- Department of Molecular Medicine, - Section of Pneumology, Laboratory of Biochemistry & Genetics, University and Fondazione IRCCS Policlinico San Matteo, Pavia, 27100, Italy.
| | - Marco Basiricò
- Division of Medical Oncology, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Federica Capozzi
- Division of Medical Oncology, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Marta Canta
- Division of Medical Oncology, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Davide Piloni
- Department of Molecular Medicine, - Section of Pneumology, Laboratory of Biochemistry & Genetics, University and Fondazione IRCCS Policlinico San Matteo, Pavia, 27100, Italy.
| | - Francesca Cemmi
- Department of Molecular Medicine, - Section of Pneumology, Laboratory of Biochemistry & Genetics, University and Fondazione IRCCS Policlinico San Matteo, Pavia, 27100, Italy.
| | - Dario Sangiolo
- Division of Medical Oncology, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Loretta Gammaitoni
- Division of Medical Oncology, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Marco Soster
- Laboratory of Tumor Microenvironment, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Serena Marchiò
- Laboratory of Tumor Microenvironment, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Ernesto Pozzi
- Department of Molecular Medicine, - Section of Pneumology, Laboratory of Biochemistry & Genetics, University and Fondazione IRCCS Policlinico San Matteo, Pavia, 27100, Italy.
| | - Patrizia Morbini
- Department of Molecular Medicine- Section of Pathology, University of Pavia and Fondazione IRCCS Policlinico San Matteo, Pavia, 27100, Italy.
| | - Maurizio Luisetti
- Department of Molecular Medicine, - Section of Pneumology, Laboratory of Biochemistry & Genetics, University and Fondazione IRCCS Policlinico San Matteo, Pavia, 27100, Italy.
| | - Massimo Aglietta
- Division of Medical Oncology, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Giovanni Grignani
- Division of Medical Oncology, IRCCS-Institute for Cancer Research and Treatment, Candiolo, (TO), 10060, Italy.
| | - Giulia M Stella
- Department of Molecular Medicine, - Section of Pneumology, Laboratory of Biochemistry & Genetics, University and Fondazione IRCCS Policlinico San Matteo, Pavia, 27100, Italy.
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22
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Ignatius Ou SH, Moon J, Garland LL, Mack PC, Testa JR, Tsao AS, Wozniak AJ, Gandara DR. SWOG S0722: phase II study of mTOR inhibitor everolimus (RAD001) in advanced malignant pleural mesothelioma (MPM). J Thorac Oncol 2015; 10:387-91. [PMID: 25611229 PMCID: PMC4304604 DOI: 10.1097/jto.0000000000000360] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
INTRODUCTION The PI3K/Akt/mammalian target of rapamycin pathway is activated in a majority of malignant pleural mesotheliomas (MPM). We evaluated the activity of everolimus, an oral mammalian target of rapamycin inhibitor, in patients with unresectable MPM. METHODS MPM patients who had received at least one but no more than two prior chemotherapy regimens, which must have been platinum-based, were treated with 10 mg of everolimus daily. The primary endpoint was 4-month progression-free survival (PFS) by RECIST 1.1. RESULTS A total of 59 evaluable patients were included in the analysis. The median duration of treatment was 2 cycles (56 days). Overall response rate was 2% [95% confidence interval (CI): 0-12%] by RECIST 1.1 and 0% (0-10%) by modified RECIST for MPM. The 4-month PFS rate was 29% (95% CI: 17-41%) by RECIST 1.1, and 27% (95% CI: 16-39%) by modified RECIST. The median PFS was 2.8 months (95% CI: 1.8-3.4) by RECIST 1.1. The median overall survival was 6.3 months (95% CI: 4.0-8.0). There was no difference in PFS among patients who received one or two prior chemotherapy regimens (p = 0.74). There was no difference in overall survival between patients with epithelioid histology versus other types (p = 0.47). The most common toxicities were fatigue (59%), hypertriglyceridemia (44%), anemia (42%), oral mucositis (34%), nausea (32%), and anorexia (32%). The most common grade 3 to 4 toxicities were fatigue (10.2%), anemia (6.8%), and lung infection (6.8%). CONCLUSION Everolimus has limited clinical activity in advanced MPM patients. Additional studies of single-agent everolimus in advanced MPM are not warranted.
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Affiliation(s)
- Sai-Hong Ignatius Ou
- Chao Family Comprehensive Cancer Center, University of California Irvine School of Medicine, Orange, CA 92868
| | - James Moon
- SWOG Statistical Center, Fred Hutchinson Cancer Research Center, Seattle, WA, 98101
| | - Linda L. Garland
- Arizona Cancer Center, University of Arizona Tucson School of Medicine, Tucson, AZ 85719
| | - Philip C. Mack
- University of California Davis Comprehensive Cancer Center, Sacramento, CA 95817
| | | | | | - Antoniette J. Wozniak
- Karmanos Cancer Institute, Wayne state University School of Medicine, Detroit, MI 48201
| | - David R. Gandara
- University of California Davis Comprehensive Cancer Center, Sacramento, CA 95817
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23
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Expression status of candidate genes in mesothelioma tissues and cell lines. Mutat Res 2014; 771:6-12. [PMID: 25771974 DOI: 10.1016/j.mrfmmm.2014.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Revised: 10/14/2014] [Accepted: 11/04/2014] [Indexed: 01/08/2023]
Abstract
In order to broaden knowledge on the pathogenesis of malignant pleural mesothelioma (MPM), we reviewed studies on the MPM-transcriptome and identified 119 deregulated genes. However, there was poor consistency among the studies. Thus, the expression of these genes was further investigated in the present work using reverse transcriptase-quantitative PCR (RT-qPCR) in 15 MPM and 20 non-MPM tissue samples. Fifty-nine genes showed a statistically significant deregulation and were further evaluated in two epithelioid MPM cell lines (compared to MET-5A, a non-MPM cell line). Nine genes (ACSL1, CCNO, CFB, PDGFRB, SULF1, TACC1, THBS2, TIMP3, XPOT) were deregulated with statistical significance in both cell lines, 12 (ASS1, CCNB1, CDH11, COL1A1, CXADR, EIF4G1, GALNT7, ITGA4, KRT5, PTGIS, RAN, SOD1) in at least one cell line, whereas 7 (DSP, HEG1, MCM4, MSLN, NME2, NMU, TNPO2) were close but did not reach the statistical significance in any of the cell line. Patients whose MPM tissues expressed elevated mRNA levels of BIRC5, DSP, NME2, and THBS2 showed a statistically significant shorter overall survival. Although MPM is a poorly studied cancer, some features are starting to emerge. Novel cancer genes are suggested here, in particular those involved in cell-cell and cell-matrix interactions.
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24
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Schelch K, Hoda MA, Klikovits T, Münzker J, Ghanim B, Wagner C, Garay T, Laszlo V, Setinek U, Dome B, Filipits M, Pirker C, Heffeter P, Selzer E, Tovari J, Torok S, Kenessey I, Holzmann K, Grasl-Kraupp B, Marian B, Klepetko W, Berger W, Hegedus B, Grusch M. Fibroblast Growth Factor Receptor Inhibition Is Active against Mesothelioma and Synergizes with Radio- and Chemotherapy. Am J Respir Crit Care Med 2014; 190:763-72. [DOI: 10.1164/rccm.201404-0658oc] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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25
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Kanteti R, Dhanasingh I, Kawada I, Lennon FE, Arif Q, Bueno R, Hasina R, Husain AN, Vigneswaran W, Seiwert T, Kindler HL, Salgia R. MET and PI3K/mTOR as a potential combinatorial therapeutic target in malignant pleural mesothelioma. PLoS One 2014; 9:e105919. [PMID: 25221930 PMCID: PMC4164360 DOI: 10.1371/journal.pone.0105919] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 07/26/2014] [Indexed: 12/29/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is an aggressive disease with a poor prognosis. Studies have shown that both MET and its key downstream intracellular signaling partners, PI3K and mTOR, are overexpressed in MPM. Here we determined the combinatorial therapeutic efficacy of a new generation small molecule inhibitor of MET, ARQ 197, and dual PI3K/mTOR inhibitors NVP-BEZ235 and GDC-0980 in mesothelioma cell and mouse xenograft models. Cell viability results show that mesothelioma cell lines were sensitive to ARQ 197, NVP-BEZ235 and GDC-0980 inhibitors. The combined use of ARQ 197 with either NVP-BEZ235 or GDC-0980, was synergistic (CI<1). Significant delay in wound healing was observed with ARQ 197 (p<0.001) with no added advantage of combining it with either NVP-BEZ235 or GDC-0980. ARQ 197 alone mainly induced apoptosis (20±2.36%) that was preceded by suppression of MAPK activity, while all the three suppressed cell cycle progression. Both GDC-0980 and NVP-BEZ235 strongly inhibited activities of PI3K and mTOR as evidenced from the phosphorylation status of AKT and S6 kinase. The above observation was further substantiated by the finding that a majority of the MPM archival samples tested revealed highly active AKT. While the single use of ARQ 197 and GDC-0980 inhibited significantly the growth of MPM xenografts (p<0.05, p<0.001 respectively) in mice, the combination of the above two drugs was highly synergistic (p<0.001). Our results suggest that the combined use of ARQ 197/NVP-BEZ235 and ARQ 197/GDC-0980 is far more effective than the use of the drugs singly in suppressing MPM tumor growth and motility and therefore merit further translational studies.
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Affiliation(s)
- Rajani Kanteti
- Department of Hematology/Oncology, University of Chicago, Chicago, Illinois, United States of America
| | - Immanuel Dhanasingh
- Department of Hematology/Oncology, University of Chicago, Chicago, Illinois, United States of America
| | - Ichiro Kawada
- Department of Hematology/Oncology, University of Chicago, Chicago, Illinois, United States of America
| | - Frances E. Lennon
- Department of Hematology/Oncology, University of Chicago, Chicago, Illinois, United States of America
| | - Qudsia Arif
- Department of Pathology, University of Chicago, Chicago, Illinois, United States of America
| | - Raphael Bueno
- Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Rifat Hasina
- Department of Hematology/Oncology, University of Chicago, Chicago, Illinois, United States of America
| | - Aliya N. Husain
- Department of Pathology, University of Chicago, Chicago, Illinois, United States of America
| | - Wickii Vigneswaran
- Department of Surgery, University of Chicago, Chicago, Illinois, United States of America
| | - Tanguy Seiwert
- Department of Hematology/Oncology, University of Chicago, Chicago, Illinois, United States of America
| | - Hedy L. Kindler
- Department of Hematology/Oncology, University of Chicago, Chicago, Illinois, United States of America
| | - Ravi Salgia
- Department of Hematology/Oncology, University of Chicago, Chicago, Illinois, United States of America
- * E-mail:
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26
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Jungwirth U, Gojo J, Tuder T, Walko G, Holcmann M, Schöfl T, Nowikovsky K, Wilfinger N, Schoonhoven S, Kowol CR, Lemmens-Gruber R, Heffeter P, Keppler BK, Berger W. Calpain-Mediated Integrin Deregulation as a Novel Mode of Action for the Anticancer Gallium Compound KP46. Mol Cancer Ther 2014; 13:2436-49. [DOI: 10.1158/1535-7163.mct-14-0087] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Onen HI, Yilmaz A, Alp E, Celik A, Demiroz SM, Konac E, Kurul IC, Menevse ES. EF24 and RAD001 potentiates the anticancer effect of platinum-based agents in human malignant pleural mesothelioma (MSTO-211H) cells and protects nonmalignant mesothelial (MET-5A) cells. Hum Exp Toxicol 2014; 34:117-26. [PMID: 25028262 DOI: 10.1177/0960327114542965] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The most widespread neoplasm of the pleura is malignant pleural mesothelioma (MPM) with low prevalence rate. The mechanistic target of rapamycin signaling pathway, inhibited by RAD001, was shown to be deregulated in MPM development and considered a novel target for the MPM therapy. The EF24, a curcumin analog, also affects several signaling pathways and kills cancer cells as a single agent or in combination with classical drugs. We aimed to evaluate possible effects of RAD001, EF24, cisplatin, and oxaliplatin treatments on both malignant pleural mesothelioma (MSTO-211H) and nonmalignant mesothelial (Met-5A) cell lines. The effects of the agents on MSTO-211H and Met-5A cells were evaluated in terms of cell viability, cytotoxicity, DNA synthesis rate, quantitation of apoptotic DNA fragmentation, and cleaved caspase 3 levels. Moreover, quantitative messenger RNA (mRNA) analysis of apoptotic (CASP9) and antiapoptotic (BCL2L1 and BCL2) genes were also performed. We found that both EF24 and RAD001 alone treatments decreased only MSTO-211H cell viability, but cisplatin and oxaliplatin affected both cell lines. Pretreatment with EF24 or RAD001 followed by cisplatin increased the effects of cisplatin alone application. EF24 and RAD001 pretreatment decreased DNA fragmentation rate when compared with cisplatin alone treatment in Met-5A cells. Sequential treatments resulted in a significant increase of CASP9 mRNA expression in MSTO-211H cells but not in Met-5A cells. Our preliminary results suggest that pretreatment with EF24 or RAD001 may reduce cytotoxic effect of cisplatin on nonmalignant mesothelial cells and increase cell death response of MPM cells. Further analyses using animal models are needed to confirm these findings in vivo.
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Affiliation(s)
- H I Onen
- Department of Medical Biology and Genetics, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey
| | - A Yilmaz
- Department of Bioengineering, Faculty of Engineering and Architecture, Mehmet Akif Ersoy University, Burdur, Turkey
| | - E Alp
- Department of Medical Biology, Faculty of Medicine, Giresun University, Giresun, Turkey
| | - A Celik
- Department of Thoracic Surgery, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey
| | - S M Demiroz
- Department of Thoracic Surgery, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey
| | - E Konac
- Department of Medical Biology and Genetics, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey
| | - I C Kurul
- Department of Thoracic Surgery, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey
| | - E S Menevse
- Department of Medical Biology and Genetics, Faculty of Medicine, Gazi University, Besevler, Ankara, Turkey
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28
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Moon DG, Lee SE, Oh MM, Lee SC, Jeong SJ, Hong SK, Yoon CY, Byun SS, Park HS, Cheon J. NVP-BEZ235, a dual PI3K/mTOR inhibitor synergistically potentiates the antitumor effects of cisplatin in bladder cancer cells. Int J Oncol 2014; 45:1027-35. [PMID: 24969552 PMCID: PMC4121414 DOI: 10.3892/ijo.2014.2505] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 05/19/2014] [Indexed: 11/28/2022] Open
Abstract
The PI3K/Akt/mTOR pathway is a prototypic survival pathway and constitutively activated in many malignant conditions. Moreover, activation of the PI3K/Akt/mTOR pathway confers resistance to various cancer therapies and is often associated with a poor prognosis. In this study, we explored the antitumor effect of NVP-BEZ235, a dual PI3K/mTOR inhibitor in cisplatin-resistant human bladder cancer cells and its synergistic interaction with cisplatin. A human bladder cancer cell line with cisplatin resistance was exposed to escalating doses of NVP-BEZ235 alone or in combination with cisplatin and antitumor effects was determined by the CCK-8 assay. Based on a dose-response study, synergistic interaction between NVP-BEZ235 and cisplatin was evaluated by combination index (CI), three-dimensional model and clonogenic assay. The combination of NVP-BEZ235 and cisplatin caused significant synergistic antitumor effect in cisplatin-resistant bladder cancer cells over a wide dose range and reduced the IC50 of NVP-BEZ235 and cisplatin by 5.6- and 3.6-fold, respectively. Three-dimensional synergy analysis resulted in a synergy volume of 388.25 μM/ml2% indicating a strong synergistic effect of combination therapy. The combination therapy caused cell cycle arrest and caspase-dependent apoptosis. Although NVP-BEZ235 suppressed PI3K/mTOR signaling without any paradoxical induction of Akt activity, it caused MEK/ERK pathway activation. The present study demonstrated that the PI3K/mTOR dual inhibitor NVP-BEZ235 can synergistically potentiate the antitumor effects of cisplatin in cisplatin-resistant bladder cancer cells though the suppression of cell cycle progression and the survival pathway as well as induction of caspase-dependent apoptosis.
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Affiliation(s)
- Du G Moon
- Department of Urology, College of Medicine, Korea University, Guro Hospital, Seoul, Republic of Korea
| | - Sang E Lee
- Department of Urology, School of Medicine, Seoul National University, Bundang Hospital, Gyeonggi‑do, Seoul, Republic of Korea
| | - Mi M Oh
- Department of Urology, College of Medicine, Korea University, Guro Hospital, Seoul, Republic of Korea
| | - Sang C Lee
- Department of Urology, School of Medicine, Seoul National University, Bundang Hospital, Gyeonggi‑do, Seoul, Republic of Korea
| | - Seong J Jeong
- Department of Urology, School of Medicine, Seoul National University, Bundang Hospital, Gyeonggi‑do, Seoul, Republic of Korea
| | - Sung K Hong
- Department of Urology, School of Medicine, Seoul National University, Bundang Hospital, Gyeonggi‑do, Seoul, Republic of Korea
| | - Cheol Y Yoon
- Department of Urology, College of Medicine, Korea University, Guro Hospital, Seoul, Republic of Korea
| | - Seok S Byun
- Department of Urology, School of Medicine, Seoul National University, Bundang Hospital, Gyeonggi‑do, Seoul, Republic of Korea
| | - Hong S Park
- Department of Urology, College of Medicine, Korea University, Guro Hospital, Seoul, Republic of Korea
| | - Jun Cheon
- Department of Urology, College of Medicine, Korea University, Anam Hospital, Seoul, Republic of Korea
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29
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Moriya M, Yamada T, Tamura M, Ishikawa D, Hoda MA, Matsumoto I, Klepetko W, Oda M, Yano S, Watanabe G. Antitumor effect and antiangiogenic potential of the mTOR inhibitor temsirolimus against malignant pleural mesothelioma. Oncol Rep 2013; 31:1109-15. [PMID: 24378576 DOI: 10.3892/or.2013.2948] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 11/12/2013] [Indexed: 11/06/2022] Open
Abstract
The mTOR inhibitor temsirolimus has antitumor and antiangiogenic activity against several carcinomas, yet few reports document the efficacy of temsirolimus against malignant pleural mesothelioma (MPM). Therefore, we evaluated the efficacy of temsirolimus and the antiangiogenic effect of temsirolimus in the treatment of MPM. We examined the efficacy of temsirolimus alone and the efficacy of the combination of temsirolimus and cisplatin or pemetrexed against four MPM cell lines using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. The effect of temsirolimus on the production of proangiogenic cytokines by MPM cell lines was examined by enzyme-linked immunosorbent assay (ELISA). Expression of mTOR and proangiogenic cytokines in clinical specimens from MPM patients was determined by immunohistochemistry. Temsirolimus inhibited cell viability and suppressed cell proliferation of all MPM cell lines. Combined treatment with temsirolimus and cisplatin inhibited the viability of all MPM cell lines more effectively than temsirolimus alone. Temsirolimus strongly inhibited the phosphorylation of p70s6k, a downstream molecule of mTOR, in all MPM cell lines and led to an increase in the levels of cleaved caspase-3 in the H226 and Y-meso14 cells. Temsirolimus also inhibited the production of vascular endothelial growth factor (VEGF) and platelet-derived growth factor-AA (PDGF-AA). Phosphorylated mTOR and high expression of VEGF and PDGF were detected in 2 and 3, respectively, out of the 5 MPM specimens. These results suggest that temsirolimus has activity against MPM cells by inhibition of cell proliferation and angiogenesis, and may be beneficial for a subset of MPM patients with high mTOR expression.
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Affiliation(s)
- Makio Moriya
- Department of General and Cardiothoracic Surgery, Kanazawa University, Kanazawa, Japan
| | - Tadaaki Yamada
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Masaya Tamura
- Department of General and Cardiothoracic Surgery, Kanazawa University, Kanazawa, Japan
| | - Daisuke Ishikawa
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Mir Alireza Hoda
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Isao Matsumoto
- Department of General and Cardiothoracic Surgery, Kanazawa University, Kanazawa, Japan
| | - Walter Klepetko
- Department of Thoracic Surgery, Medical University of Vienna, Vienna, Austria
| | - Makoto Oda
- Department of General and Cardiothoracic Surgery, Kanazawa University, Kanazawa, Japan
| | - Seiji Yano
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Go Watanabe
- Department of General and Cardiothoracic Surgery, Kanazawa University, Kanazawa, Japan
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Tsc1-Tp53 loss induces mesothelioma in mice, and evidence for this mechanism in human mesothelioma. Oncogene 2013; 33:3151-60. [PMID: 23851502 PMCID: PMC3931745 DOI: 10.1038/onc.2013.280] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 04/26/2013] [Accepted: 05/16/2013] [Indexed: 12/25/2022]
Abstract
Mesothelioma is diagnosed in approximately 2,500 patients in the United States every year, most often arising in the pleural space, but also occurring as primary peritoneal mesothelioma. The vast majority of patients with mesothelioma die from their disease within 3 years. We developed a new mouse model of mesothelioma by bladder or intra-peritoneal injection of adenovirus Cre into mice with conditional alleles of each of Tp53 and Tsc1. Such mice began to develop malignant ascites about 6 months after injection, which was due to peritoneal mesothelioma, based on tumor morphology and immunohistochemical staining. Mesothelioma cell lines were established which showed loss of both Tsc1 and Tp53, with mTORC1 activation. Treatment of mice with malignant ascites due to mesothelioma with rapamycin led to a marked reduction in ascites, extended survival, and a 95–99% reduction in mesothelioma tumor volume, in comparison to vehicle-treated mice. To see if TSC1/TSC2 loss was a common genetic event in human mesothelioma, we examined 9 human mesothelioma cell lines, and found that 4 of 9 showed persistent activation of mTORC1 though none had loss of TSC1 or TSC2. A tissue microarray analysis of 198 human mesothelioma specimens showed that 33% of cases had reduced TSC2 expression and 60% showed activation of mTOR, indicating that mTOR activation is common in human mesothelioma and suggesting that it is a potential therapeutic target.
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Kryeziu K, Jungwirth U, Hoda MA, Ferk F, Knasmüller S, Karnthaler-Benbakka C, Kowol CR, Berger W, Heffeter P. Synergistic anticancer activity of arsenic trioxide with erlotinib is based on inhibition of EGFR-mediated DNA double-strand break repair. Mol Cancer Ther 2013; 12:1073-84. [PMID: 23548265 DOI: 10.1158/1535-7163.mct-13-0065] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Arsenic trioxide (ATO), one of the oldest remedies used in traditional medicine, was recently rediscovered as an anticancer drug and approved for treatment of relapsed acute promyelocytic leukemia. However, its activity against nonhematologic cancers is rather limited so far. Here, we show that inhibition of ATO-mediated EGF receptor (EGFR) activation can be used to potently sensitize diverse solid cancer types against ATO. Thus, combination of ATO and the EGFR inhibitor erlotinib exerted synergistic activity against multiple cancer cell lines. Subsequent analyses revealed that this effect was based on the blockade of ATO-induced EGFR phosphorylation leading to more pronounced G2-M arrest as well as enhanced and more rapid induction of apoptosis. Comparable ATO-sensitizing effects were also found with PI3K/AKT and mitogen-activated protein/extracellular signal-regulated kinase (MEK) inhibitors, suggesting an essential role of the EGFR-mediated downstream signaling pathway in cancer cell protection against ATO. H2AX staining and comet assay revealed that erlotinib significantly increases ATO-induced DNA double-strand breaks (DSB) well in accordance with a role of the EGFR signaling axis in DNA damage repair. Indeed, EGFR inhibition led to downregulation of several DNA DSB repair proteins such as Rad51 and Rad50 as well as reduced phosphorylation of BRCA1. Finally, the combination treatment of ATO and erlotinib was also distinctly superior to both monotreatments against the notoriously therapy-resistant human A549 lung cancer and the orthotopic p31 mesothelioma xenograft model in vivo. In conclusion, this study suggests that combination of ATO and EGFR inhibitors is a promising therapeutic strategy against various solid tumors harboring wild-type EGFR.
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Affiliation(s)
- Kushtrim Kryeziu
- Department of Medicine I, Institute of Cancer Research, Medical University Vienna, Vienna, Austria
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32
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Abstract
BACKGROUND Activins control the growth of several tumour types including thoracic malignancies. In the present study, we investigated their expression and function in malignant pleural mesothelioma (MPM). METHODS The expression of activins and activin receptors was analysed by quantitative PCR in a panel of MPM cell lines. Activin A expression was further analysed by immunohistochemistry in MPM tissue specimens (N=53). Subsequently, MPM cells were treated with activin A, activin receptor inhibitors or activin-targeting siRNA and the impact on cell viability, proliferation, migration and signalling was assessed. RESULTS Concomitant expression of activin subunits and receptors was found in all cell lines, and activin A was overexpressed in most cell lines compared with non-malignant mesothelial cells. Similarly, immunohistochemistry demonstrated intense staining of tumour cells for activin A in a subset of patients. Treatment with activin A induced SMAD2 phosphorylation and stimulated clonogenic growth of mesothelioma cells. In contrast, treatment with kinase inhibitors of activin receptors (SB-431542, A-8301) inhibited MPM cell viability, clonogenicity and migration. Silencing of activin A expression by siRNA oligonucleotides further confirmed these results and led to reduced cyclin D1/3 expression. CONCLUSION Our study suggests that activin A contributes to the malignant phenotype of MPM cells via regulation of cyclin D and may represent a valuable candidate for therapeutic interference.
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Favoni RE, Daga A, Malatesta P, Florio T. Preclinical studies identify novel targeted pharmacological strategies for treatment of human malignant pleural mesothelioma. Br J Pharmacol 2012; 166:532-53. [PMID: 22289125 PMCID: PMC3417486 DOI: 10.1111/j.1476-5381.2012.01873.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Revised: 12/01/2011] [Accepted: 12/20/2011] [Indexed: 12/22/2022] Open
Abstract
The incidence of human malignant pleural mesothelioma (hMPM) is still increasing worldwide. hMPM prognosis is poor even if the median survival time has been slightly improved after the introduction of the up-to-date chemotherapy. Nevertheless, large phase II/III trials support the combination of platinum derivatives and pemetrexed or raltitrexed, as preferred first-line schedule. Better understanding of the molecular machinery of hMPM will lead to the design and synthesis of novel compounds targeted against pathways identified as crucial for hMPM cell proliferation and spreading. Among them, several receptors tyrosine kinase show altered activity in subsets of hMPM. This observation suggests that these kinases might represent novel therapeutic targets in this chemotherapy-resistant disease. Over these foundations, several promising studies are ongoing at preclinical level and novel molecules are currently under evaluation as well. Yet, established tumour cell lines, used for decades to investigate the efficacy of anticancer agents, although still the main source of drug efficacy studies, after long-term cultures tend to biologically diverge from the original tumour, limiting the predictive potential of in vivo efficacy. Cancer stem cells (CSCs), a subpopulation of malignant cells capable of self-renewal and multilineage differentiation, are believed to play an essential role in cancer initiation, growth, metastasization and relapse, being responsible of chemo- and radiotherapy refractoriness. According to the current carcinogenesis theory, CSCs represent the tumour-initiating cell (TIC) fraction, the only clonogenic subpopulation able to originate a tumour mass. Consequently, the recently described isolation of TICs from hMPM, the proposed main pharmacological target for novel antitumoural drugs, may contribute to better dissect the biology and multidrug resistance pathways controlling hMPM growth.
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Affiliation(s)
- Roberto E Favoni
- IRCCS A.O.U. San Martino-IST, Laboratory of Gene Transfer, Genoa, Italy.
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Kaira K, Serizawa M, Koh Y, Takahashi T, Hanaoka H, Oriuchi N, Endo M, Kondo H, Nakajima T, Yamamoto N. Relationship between 18F-FDG uptake on positron emission tomography and molecular biology in malignant pleural mesothelioma. Eur J Cancer 2012; 48:1244-54. [DOI: 10.1016/j.ejca.2012.01.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Revised: 01/13/2012] [Accepted: 01/16/2012] [Indexed: 01/29/2023]
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35
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Cedrés S, Montero MA, Martinez P, Martinez A, Rodríguez-Freixinós V, Torrejon D, Gabaldon A, Salcedo M, Ramon Y Cajal S, Felip E. Exploratory analysis of activation of PTEN-PI3K pathway and downstream proteins in malignant pleural mesothelioma (MPM). Lung Cancer 2012; 77:192-8. [PMID: 22459204 DOI: 10.1016/j.lungcan.2012.02.022] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Revised: 02/10/2012] [Accepted: 02/29/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND Malignant pleural mesothelioma (MPM) is a highly aggressive neoplasm with elevated AKT/mTOR activity. We aimed to identify the expression and phosphorylation status of PTEN, PI3K and downstream signaling in MPM. PATIENTS AND METHODS Thirty consecutive MPM patients were identified. Clinical data analyzed: sex, age, histology, performance status (PS), white blood count, and neutrophil-lymphocyte ratio (NLR). Paraffin-embedded biopsies were used for immunohistochemical analysis. RESULTS Overexpression of PTEN, pMAPK, mTOR, pAKT, 4E-BP1, p4E-BP1, eIF-4E, peIF-4E, p-S6 and FOXO3a in MPM was found in 90%, 100%, 93.3%, 80%, 100%, 43.3%, 96.7%, 100%, 63.3% and 100% of tumors respectively. There was a significant correlation between low pS6 protein expression and longer progression free survival (PFS: 7.9 vs 5.6 months; p = 0.04) and overall survival (OS: 23.4 vs 5.6 months; p = 0.05). Patients with concomitant low expression of pS6 and p4E-BP1 and overexpression of FOXO3a had significantly better prognosis (34.6 vs 1.9 months; p = 0.004). In multivariate analysis, histology and NLR were independent prognostic factors (p = 0.02 and p = 0.04 respectively), but pS6 only showed a trend (p = 0.8). CONCLUSIONS This study shows PI3K pathway and downstream proteins in MPM are frequently activated and provides prognostic information. The role of PI3K pathway is worth of prospective validation in future studies on MPM.
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Affiliation(s)
- S Cedrés
- Medical Oncology Service/Vall d'Hebron University Hospital, Barcelona, Spain.
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