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Mishra DK, Popovski D, Morris SM, Bondoc A, Senthil Kumar S, Girard EJ, Rutka J, Fouladi M, Huang A, Olson JM, Drissi R. Preclinical pediatric brain tumor models for immunotherapy: Hurdles and a way forward. Neuro Oncol 2024; 26:226-235. [PMID: 37713135 PMCID: PMC10836771 DOI: 10.1093/neuonc/noad170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Indexed: 09/16/2023] Open
Abstract
Brain tumors are the most common solid tumor in children and the leading cause of cancer-related deaths. Over the last few years, improvements have been made in the diagnosis and treatment of children with Central Nervous System tumors. Unfortunately, for many patients with high-grade tumors, the overall prognosis remains poor. Lower survival rates are partly attributed to the lack of efficacious therapies. The advent and success of immune checkpoint inhibitors (ICIs) in adults have sparked interest in investigating the utility of these therapies alone or in combination with other drug treatments in pediatric patients. However, to achieve improved clinical outcomes, the establishment and selection of relevant and robust preclinical pediatric high-grade brain tumor models is imperative. Here, we review the information that influenced our model selection as we embarked on an international collaborative study to test ICIs in combination with epigenetic modifying agents to enhance adaptive immunity to treat pediatric brain tumors. We also share challenges that we faced and potential solutions.
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Affiliation(s)
- Deepak Kumar Mishra
- Center for Childhood Cancer Research, Nationwide Children’s Hospital, Columbus, Ohio, USA
| | - Dean Popovski
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, Onatario, Canada
| | - Shelli M Morris
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, Seattle, Washington, USA
| | - Andrew Bondoc
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, Onatario, Canada
| | - Shiva Senthil Kumar
- Center for Childhood Cancer Research, Nationwide Children’s Hospital, Columbus, Ohio, USA
| | - Emily J Girard
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, Seattle, Washington, USA
| | - James Rutka
- Division of Neurosurgery, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Maryam Fouladi
- Pediatric Neuro-Oncology Program, Nationwide Children’s Hospital, Columbus, Ohio, USA
- The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Annie Huang
- Arthur and Sonia Labatt Brain Tumor Research Centre, Division of Haematology/Oncology, Hospital for Sick Children, Toronto, Onatario, Canada
| | - James M Olson
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, Seattle, Washington, USA
| | - Rachid Drissi
- Center for Childhood Cancer Research, Nationwide Children’s Hospital, Columbus, Ohio, USA
- The Ohio State University College of Medicine, Columbus, Ohio, USA
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Seaberg MH, Kazda T, Youland RS, Laack NN, Pafundi DH, Anderson SK, Sarkaria JN, Galanis E, Brown PD, Brinkmann DH. Dosimetric patterns of failure in the era of novel chemoradiotherapy in newly-diagnosed glioblastoma patients. Radiother Oncol 2023; 188:109768. [PMID: 37385378 DOI: 10.1016/j.radonc.2023.109768] [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: 11/18/2022] [Revised: 06/09/2023] [Accepted: 06/21/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND Patterns of failure (POF) may provide an alternative quantitative endpoint to overall survival for evaluation of novel chemoradiotherapy regimens with glioblastoma. MATERIALS AND METHODS POF of 109 newly-diagnosed glioblastoma patients per 2016 WHO classification who received conformal radiotherapy with concomitant and adjuvant temozolomide were reviewed. Seventy-five of those patients also received an investigational chemotherapy agent (everolimus, erlotinib, or vorinostat). Recurrence volumes were defined with MRI contrast enhancement. POF at protocol (POFp), initial (POFi), and RANO (POFRANO) progression timepoints were characterized by the percentage of recurrence volume within the 95% dose region. POFp, POFi, and POFRANO of each patient were categorized (central, non-central, or both). RESULTS POF of the temozolomide-only control cohort were unchanged (79% central, 12% non-central, and 9% both) across protocol, initial, and RANO progression timepoints. Unlike the temozolomide-only cohort, POF of the collective novel chemotherapy cohort appeared increasingly non-central when comparing POFi with POFp, with a non-central component increasing from 16% to 29% (p = 0.078). POF did not correlate with overall survival or time to progression. CONCLUSION POF of patients receiving a novel chemotherapy appeared to be influenced by the timepoint of analysis and were increasingly non-central at protocol progression as compared with initial recurrence, suggesting that recurrence originates from the central region. Addition of everolimus and vorinostat appeared to influence POF, despite similar survival outcomes with the temozolomide-only control group. In studies dealing with novel therapeutic agents, robust and properly-timed dosimetric POF analysis may be helpful to evaluate biologic aspects of novel agents.
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Affiliation(s)
- Maasa H Seaberg
- University of California San Francisco Medical Center, Department of Radiation Oncology, San Francisco, CA, USA
| | - Tomas Kazda
- Department of Radiation Oncology, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | | | - Nadia N Laack
- Mayo Clinic, Department of Radiation Oncology, Rochester, MN, USA
| | - Deanna H Pafundi
- Mayo Clinic, Department of Radiation Oncology, Jacksonville, FL, USA
| | | | - Jann N Sarkaria
- Mayo Clinic, Department of Radiation Oncology, Rochester, MN, USA
| | | | - Paul D Brown
- Mayo Clinic, Department of Radiation Oncology, Rochester, MN, USA
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Kotian S, Carnes RM, Stern JL. Enhancing Transcriptional Reprogramming of Mesenchymal Glioblastoma with Grainyhead-like 2 and HDAC Inhibitors Leads to Apoptosis and Cell-Cycle Dysregulation. Genes (Basel) 2023; 14:1787. [PMID: 37761927 PMCID: PMC10530281 DOI: 10.3390/genes14091787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/06/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
Glioblastoma (GBM) tumor cells exhibit mesenchymal properties which are thought to play significant roles in therapeutic resistance and tumor recurrence. An important question is whether impairment of the mesenchymal state of GBM can sensitize these tumors to therapeutic intervention. HDAC inhibitors (HDACi) are being tested in GBM for their ability promote mesenchymal-to-epithelial transcriptional (MET) reprogramming, and for their cancer-specific ability to dysregulate the cell cycle and induce apoptosis. We set out to enhance the transcriptional reprogramming and apoptotic effects of HDACi in GBM by introducing an epithelial transcription factor, Grainyhead-like 2 (GRHL2), to specifically counter the mesenchymal state. GRHL2 significantly enhanced HDACi-mediated MET reprogramming. Surprisingly, we found that inducing GRHL2 in glioma stem cells (GSCs) altered cell-cycle drivers and promoted aneuploidy. Mass spectrometry analysis of GRHL2 interacting proteins revealed association with several key mitotic factors, suggesting their exogenous expression disrupted the established mitotic program in GBM. Associated with this cell-cycle dysregulation, the combination of GRHL2 and HDACi induced elevated levels of apoptosis. The key implication of our study is that although genetic strategies to repress the mesenchymal properties of glioblastoma may be effective, biological interactions of epithelial factors in mesenchymal cancer cells may dysregulate normal homeostatic cellular mechanisms.
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Affiliation(s)
| | | | - Josh L. Stern
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35233, USA
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Merati A, Kotian S, Acton A, Placzek W, Smithberger E, Shelton AK, Miller CR, Stern JL. Glioma Stem Cells Are Sensitized to BCL-2 Family Inhibition by Compromising Histone Deacetylases. Int J Mol Sci 2023; 24:13688. [PMID: 37761989 PMCID: PMC10530722 DOI: 10.3390/ijms241813688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/14/2023] [Accepted: 08/25/2023] [Indexed: 09/29/2023] Open
Abstract
Glioblastoma (GBM) remains an incurable disease with an extremely high five-year recurrence rate. We studied apoptosis in glioma stem cells (GSCs) in response to HDAC inhibition (HDACi) combined with MEK1/2 inhibition (MEKi) or BCL-2 family inhibitors. MEKi effectively combined with HDACi to suppress growth, induce cell cycle defects, and apoptosis, as well as to rescue the expression of the pro-apoptotic BH3-only proteins BIM and BMF. A RNAseq analysis of GSCs revealed that HDACi repressed the pro-survival BCL-2 family genes MCL1 and BCL-XL. We therefore replaced MEKi with BCL-2 family inhibitors and observed enhanced apoptosis. Conversely, a ligand for the cancer stem cell receptor CD44 led to reductions in BMF, BIM, and apoptosis. Our data strongly support further testing of HDACi in combination with MEKi or BCL-2 family inhibitors in glioma.
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Affiliation(s)
- Aran Merati
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Spandana Kotian
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Alexus Acton
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - William Placzek
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Erin Smithberger
- O’Neal Comprehensive Cancer Center, Birmingham, AL 35294, USA
- Department of Pathology, Division of Neuropathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Abigail K. Shelton
- O’Neal Comprehensive Cancer Center, Birmingham, AL 35294, USA
- Department of Pathology, Division of Neuropathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - C. Ryan Miller
- O’Neal Comprehensive Cancer Center, Birmingham, AL 35294, USA
- Department of Pathology, Division of Neuropathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Josh L. Stern
- Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL 35294, USA
- O’Neal Comprehensive Cancer Center, Birmingham, AL 35294, USA
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Everix L, Seane EN, Ebenhan T, Goethals I, Bolcaen J. Introducing HDAC-Targeting Radiopharmaceuticals for Glioblastoma Imaging and Therapy. Pharmaceuticals (Basel) 2023; 16:227. [PMID: 37259375 PMCID: PMC9967489 DOI: 10.3390/ph16020227] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 09/29/2023] Open
Abstract
Despite recent advances in multimodality therapy for glioblastoma (GB) incorporating surgery, radiotherapy, chemotherapy and targeted therapy, the overall prognosis remains poor. One of the interesting targets for GB therapy is the histone deacetylase family (HDAC). Due to their pleiotropic effects on, e.g., DNA repair, cell proliferation, differentiation, apoptosis and cell cycle, HDAC inhibitors have gained a lot of attention in the last decade as anti-cancer agents. Despite their known underlying mechanism, their therapeutic activity is not well-defined. In this review, an extensive overview is given of the current status of HDAC inhibitors for GB therapy, followed by an overview of current HDAC-targeting radiopharmaceuticals. Imaging HDAC expression or activity could provide key insights regarding the role of HDAC enzymes in gliomagenesis, thus identifying patients likely to benefit from HDACi-targeted therapy.
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Affiliation(s)
- Liesbeth Everix
- Molecular Imaging Center Antwerp (MICA), University of Antwerp, 2610 Antwerpen, Belgium
| | - Elsie Neo Seane
- Department of Medical Imaging and Therapeutic Sciences, Cape Peninsula University of Technology, Cape Town 7530, South Africa
| | - Thomas Ebenhan
- Pre-Clinical Imaging Facility (PCIF), (NuMeRI) NPC, Pretoria 0001, South Africa
- Department of Science and Technology/Preclinical Drug Development Platform (PCDDP), North West University, Potchefstroom 2520, South Africa
- Nuclear Medicine, University of Pretoria, Pretoria 0001, South Africa
| | - Ingeborg Goethals
- Department of Nuclear Medicine, Ghent University Hospital, 9000 Ghent, Belgium
| | - Julie Bolcaen
- Radiation Biophysics Division, SSC laboratory, iThemba LABS, Cape Town 7131, South Africa
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Brown JMC, Zaben M, Ormonde C, Sharouf F, Spencer R, Bhatt H, Siebzehnrubl FA, Gray WP. A high-density 3-dimensional culture model of human glioblastoma for rapid screening of therapeutic resistance. Biochem Pharmacol 2023; 208:115410. [PMID: 36632958 PMCID: PMC10840506 DOI: 10.1016/j.bcp.2023.115410] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023]
Abstract
Glioblastoma is among the most lethal cancers, with no known cure. A multitude of therapeutics are being developed or in clinical trials, but currently there are no ways to predict which patient may benefit the most from which drug. Assays that allow prediction of the tumor's response to anti-cancer drugs may improve clinical decision-making. Here, we present a high-density 3D primary cell culture model for short-term testing from resected glioblastoma tissue that is set up on the day of surgery, established within 7 days and viable for at least 3 weeks. High-density 3D cultures contain tumor and host cells, including microglia, and retain key histopathological characteristics of their parent tumors, including proliferative activity, expression of the marker GFAP, and presence of giant cells. This provides a proof-of-concept that 3D primary cultures may be useful to model tumor heterogeneity. Importantly, we show that high-density 3D cultures can be used to test chemotherapy response within a 2-3-week timeframe and are predictive of patient response to Temozolomide therapy. Thus, primary high-density 3D cultures could be a useful tool for brain cancer research and prediction of therapeutic resistance.
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Affiliation(s)
- J M C Brown
- Division of Psychological Medicine and Clinical Neurosciences, University Hospital Wales, Cardiff and Vale University Health Board, CF14 4XW, United Kingdom
| | - M Zaben
- Division of Psychological Medicine and Clinical Neurosciences, University Hospital Wales, Cardiff and Vale University Health Board, CF14 4XW, United Kingdom; Department of Neurosurgery, University Hospital of Wales, Cardiff, United Kingdom; B.R.A.I.N Biomedical Research Unit, Cardiff University, United Kingdom
| | - C Ormonde
- Division of Psychological Medicine and Clinical Neurosciences, University Hospital Wales, Cardiff and Vale University Health Board, CF14 4XW, United Kingdom; B.R.A.I.N Biomedical Research Unit, Cardiff University, United Kingdom
| | - F Sharouf
- Division of Psychological Medicine and Clinical Neurosciences, University Hospital Wales, Cardiff and Vale University Health Board, CF14 4XW, United Kingdom; Department of Neurosurgery, University Hospital of Wales, Cardiff, United Kingdom; B.R.A.I.N Biomedical Research Unit, Cardiff University, United Kingdom
| | - R Spencer
- Division of Psychological Medicine and Clinical Neurosciences, University Hospital Wales, Cardiff and Vale University Health Board, CF14 4XW, United Kingdom; Department of Neurosurgery, University Hospital of Wales, Cardiff, United Kingdom; B.R.A.I.N Biomedical Research Unit, Cardiff University, United Kingdom
| | - H Bhatt
- Department of Neurosurgery, University Hospital of Wales, Cardiff, United Kingdom
| | - F A Siebzehnrubl
- School of Biosciences, European Cancer Stem Cell Research Institute, Cardiff University, Cardiff CF24 4HQ, United Kingdom.
| | - W P Gray
- Division of Psychological Medicine and Clinical Neurosciences, University Hospital Wales, Cardiff and Vale University Health Board, CF14 4XW, United Kingdom; Department of Neurosurgery, University Hospital of Wales, Cardiff, United Kingdom; B.R.A.I.N Biomedical Research Unit, Cardiff University, United Kingdom.
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7
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Zhou Q, Xu Y, Zhou Y, Wang J. Promising Chemotherapy for Malignant Pediatric Brain Tumor in Recent Biological Insights. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27092685. [PMID: 35566032 PMCID: PMC9104915 DOI: 10.3390/molecules27092685] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 11/16/2022]
Abstract
Brain tumors are the most widespread malignancies in children around the world. Chemotherapy plays a critical role in the treatment of these tumors. Although the current chemotherapy process has a remarkable outcome for a certain subtype of brain tumor, improving patient survival is still a major challenge. Further intensive treatment with conventional non-specific chemotherapy could cause additional adverse reactions without significant advancement in survival. Recently, patient derived brain tumor, xenograft, and whole genome analysis using deep sequencing technology has made a significant contribution to our understanding of cancer treatment. This realization has changed the focus to new agents, targeting the molecular pathways that are critical to tumor survival or proliferation. Thus, many novel drugs targeting epigenetic regulators or tyrosine kinase have been developed. These selective drugs may have less toxicity in normal cells and are expected to be more effective than non-specific chemotherapeutics. This review will summarize the latest novel targets and corresponding candidate drugs, which are promising chemotherapy for brain tumors according to the biological insights.
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Affiliation(s)
- Qian Zhou
- Department of Pharmacy, Hangzhou Medical College, Hangzhou 310053, China; (Q.Z.); (Y.Z.)
| | - Yichen Xu
- Department of Biological Sciences, University of Southern California (Main Campus), Los Angeles, CA 90007, USA;
| | - Yan Zhou
- Department of Pharmacy, Hangzhou Medical College, Hangzhou 310053, China; (Q.Z.); (Y.Z.)
| | - Jincheng Wang
- Center for Drug Safety Evaluation and Research, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
- Correspondence:
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Lu Y, Feng Y, Li Z, Li J, Zhang H, Hu X, Jiang W, Shi T, Wang Z. Novel piperazine based benzamide derivatives as potential anti-glioblastoma agents inhibiting cell proliferation and cell cycle progression. Eur J Med Chem 2022; 227:113908. [PMID: 34656900 DOI: 10.1016/j.ejmech.2021.113908] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/28/2021] [Accepted: 10/05/2021] [Indexed: 12/20/2022]
Abstract
Highly efficacious and tolerable agents for the treatment of glioblastoma (GBM), the most common and aggressive primary brain tumor, are urgently needed. Herein, we reveal the design, synthesis and biological evaluation of several piperazine based benzamide derivatives, which are based on the non-classical isostere principle and combination principle for GBM therapy. After structure-activity relationship (SAR) study, compound L19 was demonstrated as the most promising compound with IC50 values of 0.15 μM, 0.29 μM, 1.25 μM against GBM C6, U87-MG, U251 cells, respectively. Moreover, compound L19 could inhibit the proliferation, migration and invasion, as well as induce apoptosis and cell cycle arrest of GBM cell lines in vitro. From mechanism perspective, compound L19 could regulate the cell cycle-related proteins and influence the p16INK4a-CDK4/6-pRb pathway by western blotting experiment. What is worth mentioning is that compound L19 could penetrate the blood-brain barrier (BBB) with an exceptional brain-to-plasma ratio of 1.07 in vivo. Besides, the superior anti-glioblastoma potency in vivo of compound L19 was identified on U87-MG-xenograft model without any apparent host toxicity. Overall, the potential of compound L19 warrants further pre-clinical investigation for GBM therapy.
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Affiliation(s)
- Yingmei Lu
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Yiyue Feng
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Zhao Li
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Junfang Li
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Honghua Zhang
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Xiaoling Hu
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Weifan Jiang
- School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Tao Shi
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China
| | - Zhen Wang
- School of Pharmacy, Lanzhou University, Lanzhou, 730000, China; School of Pharmaceutical Science, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China; State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China.
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9
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Dow J, Krysztofiak A, Liu Y, Colon-Rios DA, Rogers FA, Glazer PM. Vulnerability of IDH1-Mutant Cancers to Histone Deacetylase Inhibition via Orthogonal Suppression of DNA Repair. Mol Cancer Res 2021; 19:2057-2067. [PMID: 34535560 PMCID: PMC8642278 DOI: 10.1158/1541-7786.mcr-21-0456] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 08/06/2021] [Accepted: 09/10/2021] [Indexed: 11/16/2022]
Abstract
Exploitation of DNA repair defects has enabled major advances in treating specific cancers. Recent work discovered that the oncometabolite 2-hydroxyglutarate (2-HG), produced by neomorphic isocitrate dehydrogenase 1/2 (IDH1/2) mutations, confers a homology-directed repair (HDR) defect through 2-HG-induced histone hypermethylation masking HDR signaling. Here, we report that IDH1-mutant cancer cells are profoundly sensitive to the histone deacetylase inhibitor (HDACi) vorinostat, by further suppressing the residual HDR in 2-HG-producing cells. Vorinostat downregulates repair factors BRCA1 and RAD51 via disrupted E2F-factor regulation, causing increased DNA double-strand breaks, reduced DNA repair factor foci, and functional HDR deficiency even beyond 2-HG's effects. This results in greater cell death of IDH1-mutant cells and confers synergy with radiation and PARPi, both against cells in culture and patient-derived tumor xenografts. Our work identifies HDACi's utility against IDH1-mutant cancers, and presents IDH1/2 mutations as potential biomarkers to guide trials testing HDACi in gliomas and other malignancies. IMPLICATIONS: IDH1-mutant cells show profound vulnerability to HDACi treatment, alone and with PARPi and radiation, via HDR suppression, presenting IDH1/2 mutations as biomarkers for HDACi use in gliomas and other malignancies.
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Affiliation(s)
- Jonathan Dow
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut
- Department of Genetics, Yale University School of Medicine. New Haven, Connecticut
| | - Adam Krysztofiak
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut
| | - Yanfeng Liu
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut
- Department of Genetics, Yale University School of Medicine. New Haven, Connecticut
| | - Daniel A Colon-Rios
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut
| | - Faye A Rogers
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut
| | - Peter M Glazer
- Department of Therapeutic Radiology, Yale University School of Medicine. New Haven, Connecticut.
- Department of Genetics, Yale University School of Medicine. New Haven, Connecticut
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10
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Vengoji R, Atri P, Macha MA, Seshacharyulu P, Perumal N, Mallya K, Liu Y, Smith LM, Rachagani S, Mahapatra S, Ponnusamy MP, Jain M, Batra SK, Shonka N. Differential gene expression-based connectivity mapping identified novel drug candidate and improved Temozolomide efficacy for Glioblastoma. J Exp Clin Cancer Res 2021; 40:335. [PMID: 34696786 PMCID: PMC8543939 DOI: 10.1186/s13046-021-02135-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 10/08/2021] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Glioblastoma (GBM) has a devastating median survival of only one year. Treatment includes resection, radiation therapy, and temozolomide (TMZ); however, the latter increased median survival by only 2.5 months in the pivotal study. A desperate need remains to find an effective treatment. METHODS We used the Connectivity Map (CMap) bioinformatic tool to identify candidates for repurposing based on GBM's specific genetic profile. CMap identified histone deacetylase (HDAC) inhibitors as top candidates. In addition, Gene Expression Profiling Interactive Analysis (GEPIA) identified HDAC1 and HDAC2 as the most upregulated and HDAC11 as the most downregulated HDACs. We selected PCI-24781/abexinostat due to its specificity against HDAC1 and HDAC2, but not HDAC11, and blood-brain barrier permeability. RESULTS We tested PCI-24781 using in vitro human and mouse GBM syngeneic cell lines, an in vivo murine orthograft, and a genetically engineered mouse model for GBM (PEPG - PTENflox/+; EGFRvIII+; p16Flox/- & GFAP Cre +). PCI-24781 significantly inhibited tumor growth and downregulated DNA repair machinery (BRCA1, CHK1, RAD51, and O6-methylguanine-DNA- methyltransferase (MGMT)), increasing DNA double-strand breaks and causing apoptosis in the GBM cell lines, including an MGMT expressing cell line in vitro. Further, PCI-24781 decreased tumor burden in a PEPG GBM mouse model. Notably, TMZ + PCI increased survival in orthotopic murine models compared to TMZ + vorinostat, a pan-HDAC inhibitor that proved unsuccessful in clinical trials. CONCLUSION PCI-24781 is a novel GBM-signature specific HDAC inhibitor that works synergistically with TMZ to enhance TMZ efficacy and improve GBM survival. These promising MGMT-agnostic results warrant clinical evaluation.
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Affiliation(s)
- Raghupathy Vengoji
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Pranita Atri
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Muzafar A Macha
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
- Watson-Crick Centre for Molecular Medicine, Islamic University of Science and Technology, Jammu & Kashmir, India
| | - Parthasarathy Seshacharyulu
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Naveenkumar Perumal
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Kavita Mallya
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Yutong Liu
- Department of Radiology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Lynette M Smith
- Department of Biostatistics, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Satyanarayana Rachagani
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Sidharth Mahapatra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
- Department of Pediatrics, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Moorthy P Ponnusamy
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Maneesh Jain
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
| | - Nicole Shonka
- Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
- Department of Internal Medicine, Division of Oncology & Hematology, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
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11
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Su JM, Kilburn LB, Mansur DB, Krailo M, Buxton A, Adekunle A, Gajjar A, Adamson PC, Weigel B, Fox E, Blaney SM, Fouladi M. Phase 1/2 Trial of Vorinostat and Radiation and Maintenance Vorinostat in Children with Diffuse Intrinsic Pontine Glioma: A Children's Oncology Group Report. Neuro Oncol 2021; 24:655-664. [PMID: 34347089 DOI: 10.1093/neuonc/noab188] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND A phase 1/2 trial of vorinostat (suberoylanilide hydroxamic acid), an oral histone deacetylase (HDAC) inhibitor, was conducted in children with newly-diagnosed diffuse intrinsic pontine glioma (DIPG) through the Children's Oncology Group (COG) to: 1) determine the recommended phase 2 dose (RP2D) of vorinostat given concurrently with radiation therapy; 2) document the toxicities of continuing vorinostat as maintenance therapy after radiation; and 3) to determine the efficacy of this regimen by comparing the risk of progression or death with an historical model from past COG trials. METHODS Vorinostat was given once daily, Monday through Friday, during radiation therapy (54 Gy in 30 fractions), and then continued at 230 mg/m 2 daily for a maximum of twelve 28-day cycles. RESULTS Twelve patients enrolled on the phase 1 study; the RP2D of vorinostat given concurrently with radiation was 230 mg/m 2/day, Monday through Friday weekly. The six patients enrolled at the RP2D and an additional 64 patients enrolled onto the phase 2 study contributed to the efficacy assessment. Although vorinostat was well-tolerated, did not interrupt radiation therapy, and was permanently discontinued in only 8.6% of patients due to toxicities, risk for EFS-event was not significantly reduced compared with the target risk derived from historical COG data (p = 0.32; 1-sided). The 1-year EFS was 5.85% (95% CI 1.89 - 13.1%) and 1-year OS was 39.2% (27.8 - 50.5%). CONCLUSIONS Vorinostat given concurrently with radiation followed by vorinostat monotherapy was well tolerated in children with newly-diagnosed DIPG but failed to improve outcome.
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Affiliation(s)
- Jack M Su
- Texas Children's Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Lindsay B Kilburn
- Children's National Medical Center, Center for Cancer & Blood Disorders, Washington, DC, USA
| | - David B Mansur
- Rainbow Babies and Children's Hospital, Radiation Oncology, Cleveland, OH, USA
| | - Mark Krailo
- Children's Oncology Group, Statistics, Monrovia, CA, USA
| | - Allen Buxton
- Children's Oncology Group, Statistics, Monrovia, CA, USA
| | - Adesina Adekunle
- Texas Children's Hospital, Department of Pathology, Houston, TX, USA
| | - Amar Gajjar
- St. Jude Children's Research Hospital, Department of Oncology, Memphis, TN, USA
| | - Peter C Adamson
- Children's Oncology Group, Global Head, Oncology Department, Cambridge, MA, USA
| | - Brenda Weigel
- University of Minnesota/Masonic Cancer Center, Department of Pediatrics, Hem/Onc/BMT, Minneapolis, MN, USA
| | - Elizabeth Fox
- St. Jude Children's Research Hospital, Department of Oncology, Memphis, TN, USA
| | - Susan M Blaney
- Texas Children's Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Maryam Fouladi
- Nationwide Children's Hospital, Neuro-Oncology Program, Columbus, OH, USA
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12
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Kaur J, Jakhmola S, Singh RR, Joshi B, Jha HC, Joshi A. Ultrasonic Atomizer-Driven Development of Biocompatible and Biodegradable Poly(d,l-lactide- co-glycolide) Nanocarrier-Encapsulated Suberoylanilide Hydroxamic Acid to Combat Brain Cancer. ACS APPLIED BIO MATERIALS 2021; 4:5627-5637. [PMID: 35006730 DOI: 10.1021/acsabm.1c00430] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The path to the discovery of anticancer drugs and investigating their potential activity has remained a quest for several decades. Suberoylanilide hydroxamic acid (SAHA), also known as "Vorinostat", is a well-known histone deacetylase inhibitor (HDACi) and has the potential to act as a therapeutic agent against tumorigenesis. Herein, we have fabricated SAHA incorporated into biocompatible and biodegradable poly(d,l-lactide-co-glycolide) PLGA nanoparticles (NPs) using a facile method of ultrasonic atomization and evaluated their anticancer property. We have explored their characteristics using dynamic light scattering (DLS), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), encapsulation efficiency, and in vitro drug release and have investigated their efficacy on U87 glioblastoma (GBM) cells. SAHA-PLGA NPs synthesized were of average mean size of 80 ± 23 and 105 ± 6.0 nm observed through cryo-field-emission gun SEM and HR-TEM with a polydispersity index of 0.068 and a ζ-potential value of -13.26 mV. The encapsulation efficiency was 53%, with a sustained in vitro release up to 48 h. The in vitro assessment of SAHA-PLGA NPs for their anticancer activity on U87 GBM cells showed cellular cytotoxicity with an IC50 of 19.91 μM. SAHA-PLGA NP-treated cells also showed suppression in migration with 8.77 μM concentration, and cell growth inhibition was observed in the wound scratch assay for up to 24 h. The cellular uptake studies have been utilized by time-dependent experiments, revealing their cellular internalization. Taking this into account, our present experimental findings indicate that SAHA-PLGA NPs could play a significant role in enhancing the effectiveness and bioavailability and reducing adverse effects of cancer chemotherapy. It also highlights the inherent potential of these biocompatible entities for chemotherapeutic applications in biomedical and pharmaceutics.
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Affiliation(s)
- Jaspreet Kaur
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552 Madhya Pradesh, India
| | - Shweta Jakhmola
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552 Madhya Pradesh, India
| | - Ravi Raj Singh
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552 Madhya Pradesh, India
| | - Bhavana Joshi
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552 Madhya Pradesh, India
| | - Hem Chandra Jha
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552 Madhya Pradesh, India
| | - Abhijeet Joshi
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, Khandwa Road, Indore, 453552 Madhya Pradesh, India
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13
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Athira KV, Sadanandan P, Chakravarty S. Repurposing Vorinostat for the Treatment of Disorders Affecting Brain. Neuromolecular Med 2021; 23:449-465. [PMID: 33948878 DOI: 10.1007/s12017-021-08660-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 04/09/2021] [Indexed: 12/19/2022]
Abstract
Based on the findings in recent years, we summarize the therapeutic potential of vorinostat (VOR), the first approved histone deacetylase (HDAC) inhibitor, in disorders of brain, and strategies to improve drug efficacy and reduce side effects. Scientific evidences provide a strong case for the therapeutic utility of VOR in various disorders affecting brain, including stroke, Alzheimer's disease, frontotemporal dementia, Parkinson's disease, Huntington's disease, amyotrophic lateral sclerosis, spinal muscular atrophy, X-linked adrenoleukodystrophy, epilepsy, Niemann-Pick type C disease, and neuropsychiatric disorders. Further elucidation of the neuroprotective and neurorestorative properties of VOR using proper clinical study designs could provide momentum towards its clinical application. To improve the therapeutic prospect, concerns on systemic toxicity and off-target actions need to be addressed along with the improvement in formulation and delivery aspects, especially with respect to solubility, permeability, and pharmacokinetic properties. Newer approaches in this regard include poly(ethylene glycol)-b-poly(DL-lactic acid) micelles, VOR-pluronic F127 micelles, encapsulation of iron complexes of VOR into PEGylated liposomes, human serum albumin bound VOR nanomedicine, magnetically guided layer-by-layer assembled nanocarriers, as well as convection-enhanced delivery. Even though targeting specific class or isoform of HDAC is projected as advantageous over pan-HDAC inhibitor like VOR, in terms of adverse effects and efficacy, till clinical validation, the idea is debated. As the VOR treatment-related adverse changes are mostly found reversible, further optimization of the therapeutic strategies with respect to dose, dosage regimen, and formulations of VOR could propel its clinical prospects.
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Affiliation(s)
- K V Athira
- Department of Pharmacology, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, Amrita Institute of Medical Sciences Health Sciences Campus, Kochi, 682 041, Kerala, India.
| | - Prashant Sadanandan
- Department of Pharmaceutical Chemistry & Analysis, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, Amrita Institute of Medical Sciences Health Sciences Campus, Kochi, 682 041, Kerala, India
| | - Sumana Chakravarty
- Applied Biology Division, CSIR- Indian Institute of Chemical Technology, Tarnaka, Uppal Road, Hyderabad, 500007, Telangana, India.
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14
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Buyandelger B, Bar EE, Hung KS, Chen RM, Chiang YH, Liou JP, Huang HM, Wang JY. Histone deacetylase inhibitor MPT0B291 suppresses Glioma Growth in vitro and in vivo partially through acetylation of p53. Int J Biol Sci 2020; 16:3184-3199. [PMID: 33162824 PMCID: PMC7645997 DOI: 10.7150/ijbs.45505] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 06/20/2020] [Indexed: 12/31/2022] Open
Abstract
Background: Histone deacetylase (HDAC) inhibitors have emerged as a new class of anti-tumor agents for various types of tumors, including glioblastoma. Methods and results: We found that a novel HDAC inhibitor, MPT0B291, significantly reduced the cell viability and increased cell death of human and rat glioma cell lines, but not in normal astrocytes. We also demonstrated that MPT0B291 suppressed proliferation by inducing G1 phase cell cycle arrest and increased apoptosis in human and rat glioma cell lines by flow cytometry and immunocytochemistry. We further investigated the anti-tumor effects of MPT0B291 in xenograft (mouse) and allograft (rat) models. The IVIS200 images and histological analysis indicated MPT0B291 (25 mg/kg, p. o.) reduced tumor volume. Mechanistically, MPT0B291 increased phosphorylation and acetylation/activation of p53 and increased mRNA levels of the apoptosis related genes PUMA, Bax, and Apaf1 as well as increased protein level of PUMA, Apaf1 in C6 cell line. The expression of cell cycle related gene p21 was also increased and Cdk2, Cdk4 were decreased by MPT0B291. Conclusion: Our study highlights the anti-tumor efficacy of a novel compound MPT0B291 on glioma growth.
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Affiliation(s)
- Batsaikhan Buyandelger
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, 110 Taipei, Taiwan.,Department of Neurology, Mongolian National University of Medical Sciences, 14210 Ulaanbaatar, Mongolia
| | - Eli E Bar
- Department of Pathology and Neurosurgery, University of Maryland School of Medicine, 21201 Baltimore, MD, USA
| | - Kuo-Sheng Hung
- Department of Neurosurgery, Wan Fang Hospital, Taipei Medical University, 116 Taipei, Taiwan
| | - Ruei-Ming Chen
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, 110 Taipei, Taiwan
| | - Yung-Hsiao Chiang
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, 110 Taipei, Taiwan.,Neuroscience Research Center, Taipei Medical University, 110 Taipei, Taiwan
| | - Jing-Ping Liou
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 110 Taipei, Taiwan
| | - Huei-Mei Huang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, 110 Taipei, Taiwan
| | - Jia-Yi Wang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, 110 Taipei, Taiwan.,Department of Neurosurgery, Taipei Medical University Hospital, Taipei Medical University, 110 Taipei, Taiwan.,Neuroscience Research Center, Taipei Medical University, 110 Taipei, Taiwan
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15
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Fujimoto K, Shinojima N, Hayashi M, Nakano T, Ichimura K, Mukasa A. Histone deacetylase inhibition enhances the therapeutic effects of methotrexate on primary central nervous system lymphoma. Neurooncol Adv 2020; 2:vdaa084. [PMID: 32793886 PMCID: PMC7415262 DOI: 10.1093/noajnl/vdaa084] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Background Polyglutamylation is a reversible protein modification that commonly occurs in tumor cells. Methotrexate (MTX) in tumor cells is polyglutamylated and strongly binds to dihydrofolate reductase (DHFR) without competitive inhibition by leucovorin. Therefore, tumor cells with high polyglutamylation levels are supposed to be selectively killed, whereas normal cells with lower polyglutamylation are rescued by leucovorin. This study investigated the combined effects of MTX plus histone deacetylase inhibitors (HDACIs), which upregulate MTX polyglutamylation, in primary central nervous system lymphoma (PCNSL). Methods We evaluated cell viability after MTX treatment and leucovorin rescue and compared the expression of folylpolyglutamate synthetase (FPGS), γ-glutamyl hydrolase (GGH), and DHFR in 2 human PCNSL-derived cell lines (HKBML and TK) and a human Burkitt lymphoma cell line (TL-1). Combination treatments were created using 4 HDACIs: panobinostat, vorinostat, sodium butyrate, and valproic acid. The expression of DHFR was examined as well as ratios of FPGS/GGH expression. The combined effects of MTX plus HDACIs were evaluated using a cell viability assay, mass spectroscopy imaging, and subcutaneous and intracranial xenograft models. Results HDACIs upregulated the ratio of FPGS/GGH expression resulting in increased polyglutamylation of MTX, but also downregulated expression of the target molecule of MTX: DHFR. The combination of MTX and vorinostat decreased cell viability in vitro (P < .05) and tumor volumes in a subcutaneous model (P < .0001), and prolonged survival in an intracranial model (P < .01), relative to controls. Conclusion HDACIs enhanced the therapeutic effect of MTX through increased polyglutamylation of MTX and concomitant downregulation of DHFR expression.
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Affiliation(s)
- Kenji Fujimoto
- Department of Neurosurgery, Kumamoto University Hospital, Kumamoto, Japan.,Division of Brain Tumor Translational Research, National Cancer Center Research Institute, Tokyo, Japan
| | - Naoki Shinojima
- Department of Neurosurgery, Kumamoto University Hospital, Kumamoto, Japan
| | - Mitsuhiro Hayashi
- Division of Molecular Pharmacology, National Cancer Center Research Institute, Tokyo, Japan
| | - Tomoyuki Nakano
- Division of Brain Tumor Translational Research, National Cancer Center Research Institute, Tokyo, Japan.,Department of Neurosurgery, Tokyo Medical and Dental University, Tokyo, Japan
| | - Koichi Ichimura
- Division of Brain Tumor Translational Research, National Cancer Center Research Institute, Tokyo, Japan
| | - Akitake Mukasa
- Department of Neurosurgery, Kumamoto University Hospital, Kumamoto, Japan
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16
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Kulka LAM, Fangmann PV, Panfilova D, Olzscha H. Impact of HDAC Inhibitors on Protein Quality Control Systems: Consequences for Precision Medicine in Malignant Disease. Front Cell Dev Biol 2020; 8:425. [PMID: 32582706 PMCID: PMC7291789 DOI: 10.3389/fcell.2020.00425] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 05/07/2020] [Indexed: 12/21/2022] Open
Abstract
Lysine acetylation is one of the major posttranslational modifications (PTM) in human cells and thus needs to be tightly regulated by the writers of this process, the histone acetyl transferases (HAT), and the erasers, the histone deacetylases (HDAC). Acetylation plays a crucial role in cell signaling, cell cycle control and in epigenetic regulation of gene expression. Bromodomain (BRD)-containing proteins are readers of the acetylation mark, enabling them to transduce the modification signal. HDAC inhibitors (HDACi) have been proven to be efficient in hematologic malignancies with four of them being approved by the FDA. However, the mechanisms by which HDACi exert their cytotoxicity are only partly resolved. It is likely that HDACi alter the acetylation pattern of cytoplasmic proteins, contributing to their anti-cancer potential. Recently, it has been demonstrated that various protein quality control (PQC) systems are involved in recognizing the altered acetylation pattern upon HDACi treatment. In particular, molecular chaperones, the ubiquitin proteasome system (UPS) and autophagy are able to sense the structurally changed proteins, providing additional targets. Recent clinical studies of novel HDACi have proven that proteins of the UPS may serve as biomarkers for stratifying patient groups under HDACi regimes. In addition, members of the PQC systems have been shown to modify the epigenetic readout of HDACi treated cells and alter proteostasis in the nucleus, thus contributing to changing gene expression profiles. Bromodomain (BRD)-containing proteins seem to play a potent role in transducing the signaling process initiating apoptosis, and many clinical trials are under way to test BRD inhibitors. Finally, it has been demonstrated that HDACi treatment leads to protein misfolding and aggregation, which may explain the effect of panobinostat, the latest FDA approved HDACi, in combination with the proteasome inhibitor bortezomib in multiple myeloma. Therefore, proteins of these PQC systems provide valuable targets for precision medicine in cancer. In this review, we give an overview of the impact of HDACi treatment on PQC systems and their implications for malignant disease. We exemplify the development of novel HDACi and how affected proteins belonging to PQC can be used to determine molecular signatures and utilized in precision medicine.
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Affiliation(s)
- Linda Anna Michelle Kulka
- Medical Faculty, Institute of Physiological Chemistry, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany
| | - Pia-Victoria Fangmann
- Medical Faculty, Institute of Physiological Chemistry, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany
| | - Diana Panfilova
- Medical Faculty, Institute of Physiological Chemistry, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany
| | - Heidi Olzscha
- Medical Faculty, Institute of Physiological Chemistry, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany
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17
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Muir M, Gopakumar S, Traylor J, Lee S, Rao G. Glioblastoma multiforme: novel therapeutic targets. Expert Opin Ther Targets 2020; 24:605-614. [PMID: 32394767 DOI: 10.1080/14728222.2020.1762568] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
INTRODUCTION The increasingly detailed genetic characterization of glioblastoma (GBM) has failed to translate into meaningful breakthroughs in treatment. This is likely to be attributed to molecular heterogeneity of GBM. However, the understanding of the tumor microenvironment in GBM has become more refined and has revealed a wealth of therapeutic targets that may enable the disruption of angiogenesis or immunosuppression. AREAS COVERED This review discusses the selective targeting of tumor-intrinsic pathways, therapies that target the GBM tumor microenvironment and relevant preclinical studies and their limitations. Relevant literature was derived from a PubMed search encompassing studies from 1989 to 2020. EXPERT OPINION Despite appropriate target engagement, attempts to directly inhibit oncogenic pathways in GBM have yielded little success. This is likely attributed to the molecular heterogeneity of GBM and the presence of redundant signaling that allow for accumulation of adaptive mutations and development of drug resistance. Subsequently, there has been a shift toward therapies modulating the pro-angiogenic, immunosuppressive tumor microenvironment in GBM. The non-transformed cells in the microenvironment which includes endothelial cells, myeloid cells, and T cells, are presumably genetically stable, less susceptible to heterogeneity, and easier to target. This approach offers the highest potential for a therapeutic breakthrough in GBM.
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Affiliation(s)
- Matthew Muir
- Department of Neurosurgery, Baylor College of Medicine , Houston, TX, USA
| | | | - Jeffrey Traylor
- Department of Neurosurgery, Baylor College of Medicine , Houston, TX, USA
| | - Sungho Lee
- Department of Neurosurgery, Baylor College of Medicine , Houston, TX, USA
| | - Ganesh Rao
- Department of Neurosurgery, Baylor College of Medicine , Houston, TX, USA.,Department of Neurosurgery, The University of Texas MD Anderson Cancer Center , Houston, TX, USA
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18
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Gurbani SS, Yoon Y, Weinberg BD, Salgado E, Press RH, Cordova JS, Ramesh KK, Liang Z, Velazquez Vega J, Voloschin A, Olson JJ, Schreibmann E, Shim H, Shu HKG. Assessing Treatment Response of Glioblastoma to an HDAC Inhibitor Using Whole-Brain Spectroscopic MRI. ACTA ACUST UNITED AC 2020; 5:53-60. [PMID: 30854442 PMCID: PMC6403031 DOI: 10.18383/j.tom.2018.00031] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Histone deacetylases regulate a wide variety of cellular functions and have been implicated in redifferentiation of various tumors. Histone deacetylase inhibitors (HDACi) are potential pharmacologic agents to improve outcomes for patients with gliomas. We assessed the therapeutic efficacy of belinostat (PXD-101), an HDACi with blood-brain barrier permeability. Belinostat was first tested in an orthotopic rat glioma model to assess in vivo tumoricidal effect. Our results showed that belinostat was effective in reducing tumor volume in the orthotopic rat glioma model in a dose-dependent manner. We also tested the antidepression activity of belinostat in 2 animal models of depression and found it to be effective. Furthermore, we confirmed that myo-inositol levels improved by belinostat treatment in vitro. In a human pilot study, it was observed that belinostat in combination with chemoradiation may delay initial recurrence of disease. Excitingly, belinostat significantly improved depressive symptoms in patients with glioblastoma compared with control subjects. Finally, spectroscopic magnetic resonance imaging of 2 patient cases from this pilot study are presented to indicate how spectroscopic magnetic resonance imaging can be used to monitor metabolite response and assess treatment effect on whole brain. This study highlights the potential of belinostat to be a synergistic therapeutic agent in the treatment of gliomas.
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Affiliation(s)
- Saumya S Gurbani
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA.,Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA
| | - Younghyoun Yoon
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | | | - Eric Salgado
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - Robert H Press
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - J Scott Cordova
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - Karthik K Ramesh
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA.,Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA
| | - Zhongxing Liang
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | | | | | - Jeffrey J Olson
- Neurosurgery, Emory University School of Medicine, Atlanta, GA
| | - Eduard Schreibmann
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
| | - Hyunsuk Shim
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA.,Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, Atlanta, GA.,Departments of Radiology and Imaging Sciences
| | - Hui-Kuo G Shu
- Department of Radiation Oncology, Winship Cancer Institute of Emory University, Atlanta, GA
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19
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Paradoxical effects of the epigenetic modifiers 5-aza-deoxycytidine and suberoylanilide hydroxamic acid on adipogenesis. Differentiation 2019; 106:1-8. [PMID: 30818187 DOI: 10.1016/j.diff.2019.02.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 01/12/2019] [Accepted: 02/13/2019] [Indexed: 01/17/2023]
Abstract
Adipogenesis is an important biological process that is linked to obesity and metabolic disorders. On the other hand, fat regeneration is crucial as a restorative approach following mastectomy or severe burn injury. Furthermore, optimizing an in-vitro model of adipogenesis, which would help in understanding the possible effects and/or side effects of fat-soluble drugs and anti-obesity remedies, in addition to the developmental studies. Epigenetic is an important factor that is involved in cellular differentiation and commitment. This study aimed at investigating the effect of DNA methylation and histone deactylases inhibitors, 5-Aza-deoxycytidine (5-Aza-dC) and Suberoylanilide hydroxamic acid (SAHA), on the adipogenic differentiation process. The two modifiers were applied according to our previously published protocol, followed by three cycles of a classical, two-step adipogenesis protocol. The cells pretreated with SAHA showed enhanced expression of the many adipogenic genes, including peroxisome proliferator-activated receptor-γ as well as the accumulation of intracytoplasmic fat as shown by oil red and Nile red staining and the secretion of adipokines, such as MCP-1 and IP-10. On contrary, 5-Aza-dC inhibited all these markers. In conclusion, adding the reported step with SAHA to the differentiation protocols could have an impact on the progress of the in-vitro fat regenerative approach. The possible role of 5-Aza-dC in the inhibition of adipogenesis can be of clinical interest and will need further characterization in the future.
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20
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Radoul M, Najac C, Viswanath P, Mukherjee J, Kelly M, Gillespie AM, Chaumeil MM, Eriksson P, Santos RD, Pieper RO, Ronen SM. HDAC inhibition in glioblastoma monitored by hyperpolarized 13 C MRSI. NMR IN BIOMEDICINE 2019; 32:e4044. [PMID: 30561869 PMCID: PMC6545173 DOI: 10.1002/nbm.4044] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 10/11/2018] [Accepted: 10/31/2018] [Indexed: 05/20/2023]
Abstract
Vorinostat is a histone deacetylase (HDAC) inhibitor that inhibits cell proliferation and induces apoptosis in solid tumors, and is in clinical trials for the treatment of glioblastoma (GBM). The goal of this study was to assess whether hyperpolarized 13 C MRS and magnetic resonance spectroscopic imaging (MRSI) can detect HDAC inhibition in GBM models. First, we confirmed HDAC inhibition in U87 GBM cells and evaluated real-time dynamic metabolic changes using a bioreactor system with live vorinostat-treated or control cells. We found a significant 40% decrease in the 13 C MRS-detectable ratio of hyperpolarized [1-13 C]lactate to hyperpolarized [1-13 C]pyruvate, [1-13 C]Lac/Pyr, and a 37% decrease in the pseudo-rate constant, kPL , for hyperpolarized [1-13 C]lactate production, in vorinostat-treated cells compared with controls. To understand the underlying mechanism for this finding, we assessed the expression and activity of lactate dehydrogenase (LDH) (which catalyzes the pyruvate to lactate conversion), its associated cofactor nicotinamide adenine dinucleotide, the expression of monocarboxylate transporters (MCTs) MCT1 and MCT4 (which shuttle pyruvate and lactate in and out of the cell) and intracellular lactate levels. We found that the most likely explanation for our finding that hyperpolarized lactate is reduced in treated cells is a 30% reduction in intracellular lactate levels that occurs as a result of increased expression of both MCT1 and MCT4 in vorinostat-treated cells. In vivo 13 C MRSI studies of orthotopic tumors in mice also showed a significant 52% decrease in hyperpolarized [1-13 C]Lac/Pyr when comparing vorinostat-treated U87 GBM tumors with controls, and, as in the cell studies, this metabolic finding was associated with increased MCT1 and MCT4 expression in HDAC-inhibited tumors. Thus, the 13 C MRSI-detectable decrease in hyperpolarized [1-13 C]lactate production could serve as a biomarker of response to HDAC inhibitors.
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Affiliation(s)
- Marina Radoul
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
| | - Chloé Najac
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
| | - Pavithra Viswanath
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
| | - Joydeep Mukherjee
- Department of Neurological Surgery, Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California 94158, USA
| | - Mark Kelly
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94158, USA
| | - Anne Marie Gillespie
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
| | - Myriam M. Chaumeil
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
- Department of Physical Therapy and Rehabilitation Science and Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
| | - Pia Eriksson
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
| | - Romelyn Delos Santos
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
| | - Russell O. Pieper
- Department of Neurological Surgery, Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California 94158, USA
| | - Sabrina M. Ronen
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
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21
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Was H, Krol SK, Rotili D, Mai A, Wojtas B, Kaminska B, Maleszewska M. Histone deacetylase inhibitors exert anti-tumor effects on human adherent and stem-like glioma cells. Clin Epigenetics 2019; 11:11. [PMID: 30654849 PMCID: PMC6337817 DOI: 10.1186/s13148-018-0598-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 12/17/2018] [Indexed: 12/29/2022] Open
Abstract
Background The diagnosis of glioblastoma (GBM), a most aggressive primary brain tumor with a median survival of 14.6 months, carries a dismal prognosis. GBMs are characterized by numerous genetic and epigenetic alterations, affecting patient survival and treatment response. Epigenetic mechanisms are deregulated in GBM as a result of aberrant expression/activity of epigenetic enzymes, including histone deacetylases (HDAC) which remove acetyl groups from histones regulating chromatin accessibility. Nevertheless, the impact of class/isoform-selective HDAC inhibitors (HDACi) on glioma cells, including glioma stem cells, had not been systematically determined. Results Comprehensive analysis of the public TCGA dataset revealed the increased expression of HDAC 1, 2, 3, and 7 in malignant gliomas. Knockdown of HDAC 1 and 2 in human GBM cells significantly decreased cell proliferation. We tested the activity of 2 new and 3 previously described HDACi with different class/isoform selectivity on human GBM cells. All tested compounds exerted antiproliferative properties on glioma cells. However, the HDACi 1 and 4 blocked proliferation of glioblastoma cells leading to G2/M growth arrest without affecting astrocyte survival. Moreover, 1 and 4 at low micromolar concentrations displayed cytotoxic and antiproliferative effects on sphere cultures enriched in glioma stem cells. Conclusions We identified two selective HDAC inhibitors that blocked proliferation of glioblastoma cells, but did not affect astrocyte survival. These new and highly effective inhibitors should be considered as promising candidates for further investigation in preclinical GBM models. Electronic supplementary material The online version of this article (10.1186/s13148-018-0598-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Halina Was
- Laboratory of Molecular Neurobiology, Neurobiology Center, The Nencki Institute of Experimental Biology, 3 Pasteur Str, 02-093, Warsaw, Poland.,Laboratory of Molecular Oncology, Military Institute of Medicine, 128 Szaserow Str, 04-141, Warsaw, Poland
| | - Sylwia K Krol
- Laboratory of Molecular Neurobiology, Neurobiology Center, The Nencki Institute of Experimental Biology, 3 Pasteur Str, 02-093, Warsaw, Poland
| | - Dante Rotili
- Department of Drug Chemistry and Technologies, Sapienza University of Roma, P.le A. Moro 5, 00185, Rome, Italy
| | - Antonello Mai
- Department of Drug Chemistry and Technologies, Sapienza University of Roma, P.le A. Moro 5, 00185, Rome, Italy.,Pasteur Institute, Cenci-Bolognetti Foundation, Sapienza University of Rome, 00185, Rome, Italy
| | - Bartosz Wojtas
- Laboratory of Molecular Neurobiology, Neurobiology Center, The Nencki Institute of Experimental Biology, 3 Pasteur Str, 02-093, Warsaw, Poland
| | - Bozena Kaminska
- Laboratory of Molecular Neurobiology, Neurobiology Center, The Nencki Institute of Experimental Biology, 3 Pasteur Str, 02-093, Warsaw, Poland
| | - Marta Maleszewska
- Laboratory of Molecular Neurobiology, Neurobiology Center, The Nencki Institute of Experimental Biology, 3 Pasteur Str, 02-093, Warsaw, Poland.
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22
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Galanis E, Anderson SK, Miller CR, Sarkaria JN, Jaeckle K, Buckner JC, Ligon KL, Ballman KV, Moore DF, Nebozhyn M, Loboda A, Schiff D, Ahluwalia MS, Lee EQ, Gerstner ER, Lesser GJ, Prados M, Grossman SA, Cerhan J, Giannini C, Wen PY. Phase I/II trial of vorinostat combined with temozolomide and radiation therapy for newly diagnosed glioblastoma: results of Alliance N0874/ABTC 02. Neuro Oncol 2018; 20:546-556. [PMID: 29016887 PMCID: PMC5909661 DOI: 10.1093/neuonc/nox161] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Background Vorinostat, a histone deacetylase (HDAC) inhibitor, has shown radiosensitizing properties in preclinical studies. This open-label, single-arm trial evaluated the maximum tolerated dose (MTD; phase I) and efficacy (phase II) of vorinostat combined with standard chemoradiation in newly diagnosed glioblastoma. Methods Patients received oral vorinostat (300 or 400 mg/day) on days 1-5 weekly during temozolomide chemoradiation. Following a 4- to 6-week rest, patients received up to 12 cycles of standard adjuvant temozolomide and vorinostat (400 mg/day) on days 1-7 and 15-21 of each 28-day cycle. Association between vorinostat response signatures and progression-free survival (PFS) and overall survival (OS) was assessed based on RNA sequencing of baseline tumor tissue. Results Phase I and phase II enrolled 15 and 107 patients, respectively. The combination therapy MTD was vorinostat 300 mg/day and temozolomide 75 mg/m2/day. Dose-limiting toxicities were grade 4 neutropenia and thrombocytopenia and grade 3 aspartate aminotransferase elevation, hyperglycemia, fatigue, and wound dehiscence. The primary efficacy endpoint in the phase II cohort, OS rate at 15 months, was 55.1% (median OS 16.1 mo), and consequently, the study did not meet its efficacy objective. Most common treatment-related grade 3/4 toxicities in the phase II component were lymphopenia (32.7%), thrombocytopenia (28.0%), and neutropenia (21.5%). RNA expression profiling of baseline tumors (N = 76) demonstrated that vorinostat resistance (sig-79) and sensitivity (sig-139) signatures had a reverse and positive association with OS/PFS, respectively. Conclusions Vorinostat combined with standard chemoradiation had acceptable tolerability in newly diagnosed glioblastoma. Although the primary efficacy endpoint was not met, vorinostat sensitivity and resistance signatures could facilitate patient selection in future trials.
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Affiliation(s)
| | - S Keith Anderson
- Department of Oncology, Mayo Clinic, Rochester, Minnesota
- Alliance Statistics and Data Center, Mayo Clinic, Rochester, Minnesota
| | - C Ryan Miller
- Pathobiology and Translational Science Graduate Program, University of North Carolina Lineberger Comprehensive Cancer Center, Chapel Hill, North Carolina
| | - Jann N Sarkaria
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Kurt Jaeckle
- Department of Neurology, Mayo Clinic, Jacksonville, Minnesota
| | - Jan C Buckner
- Department of Oncology, Mayo Clinic, Rochester, Minnesota
| | - Keith L Ligon
- Department of Pathology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | - Karla V Ballman
- Alliance Statistics and Data Center, Mayo Clinic, Rochester, Minnesota
| | - Dennis F Moore
- Department of Internal Medicine, Cancer Center of Kansas, Wichita, Kansas
| | - Michael Nebozhyn
- Genetics and Pharmacogenomics, Merck Research Laboratories, West Point, Pennsylvania
| | - Andrey Loboda
- Data Analysis, Informatics & Analysis Department, Merck Research Laboratories, Boston, Massachusetts
| | - David Schiff
- Neuro-Oncology Center, University of Virginia School of Medicine, Charlottesville, Virginia
| | | | - Eudocia Q Lee
- Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
| | | | - Glenn J Lesser
- Wake Forest Baptist Comprehensive Cancer Center, Wake Forest University School of Medicine, Winston-Salem, North Carolina
| | - Michael Prados
- Department of Neurological Surgery, University of California San Francisco, San Francisco, California
| | - Stuart A Grossman
- Department of Oncology, Medicine & Neurosurgery, Johns Hopkins Sidney Kimmel Comprehensive Cancer Center, Baltimore, Maryland
| | - Jane Cerhan
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, Minnesota
| | | | - Patrick Y Wen
- Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
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23
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Fan Z, Bittermann-Rummel P, Yakubov E, Chen D, Broggini T, Sehm T, Hatipoglu Majernik G, Hock SW, Schwarz M, Engelhorn T, Doerfler A, Buchfelder M, Eyupoglu IY, Savaskan NE. PRG3 induces Ras-dependent oncogenic cooperation in gliomas. Oncotarget 2018; 7:26692-708. [PMID: 27058420 PMCID: PMC5042008 DOI: 10.18632/oncotarget.8592] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 03/10/2016] [Indexed: 11/25/2022] Open
Abstract
Malignant gliomas are one of the most devastating cancers in humans. One characteristic hallmark of malignant gliomas is their cellular heterogeneity with frequent genetic lesions and disturbed gene expression levels conferring selective growth advantage. Here, we report on the neuronal-associated growth promoting gene PRG3 executing oncogenic cooperation in gliomas. We have identified perturbed PRG3 levels in human malignant brain tumors displaying either elevated or down-regulated PRG3 levels compared to non-transformed specimens. Further, imbalanced PRG3 levels in gliomas foster Ras-driven oncogenic amplification with increased proliferation and cell migration although angiogenesis was unaffected. Hence, PRG3 interacts with RasGEF1 (RasGRF1/CDC25), undergoes Ras-induced challenges, whereas deletion of the C-terminal domain of PRG3 (PRG3ΔCT) inhibits Ras. Moreover PRG3 silencing makes gliomas resistant to Ras inhibition. In vivo disequilibrated PRG3 gliomas show aggravated proliferation, invasion, and deteriorate clinical outcome. Thus, our data show that the interference with PRG3 homeostasis amplifies oncogenic properties and foster the malignancy potential in gliomas.
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Affiliation(s)
- Zheng Fan
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Philipp Bittermann-Rummel
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Eduard Yakubov
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany.,Department of Neurosurgery, Klinikum Nürnberg, Paracelsus Medical University, Nürnberg, Germany
| | - Daishi Chen
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Thomas Broggini
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Tina Sehm
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Gökce Hatipoglu Majernik
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Stefan W Hock
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Marc Schwarz
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany.,Department of Neuroradiology, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
| | - Tobias Engelhorn
- Department of Neuroradiology, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
| | - Arnd Doerfler
- Department of Neuroradiology, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
| | - Michael Buchfelder
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Ilker Y Eyupoglu
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Nicolai E Savaskan
- Translational Neurooncology Laboratory, Department of Neurosurgery, University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), Erlangen, Germany.,BiMECON ENT., Berlin-Brandenburg, Germany
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24
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Xu J, Sun J, Wang P, Ma X, Li S. Pendant HDAC inhibitor SAHA derivatised polymer as a novel prodrug micellar carrier for anticancer drugs. J Drug Target 2017; 26:448-457. [PMID: 29251528 DOI: 10.1080/1061186x.2017.1419355] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Suberoylanilide hydroxamic acid (SAHA), a histone deacetylase inhibitor (HDACi) approved by FDA for the treatment of cutaneous T cell lymphoma, is a promising anticancer drug for various cancers with a unique mode of action. However, it demonstrates limited clinical benefits in solid tumours as a single drug. In order to achieve enhanced and synergistic co-delivery of SAHA and doxorubicin (DOX), a cleavable SAHA-based prodrug polymer (POEG-b-PSAHA), consisting of hydrophilic poly(oligo(ethylene glycol) methacrylate) (POEG) blocks and hydrophobic SAHA segments, has been developed. POEG-b-PSAHA prodrug polymer was able to form spherical micelles with a diameter around 60 nm and well retained the pharmacological activity of SAHA in either inhibiting the proliferation of tumour cells or inducing histone acetylation. DOX formulated in POEG-b-PSAHA-based micelles showed a sustained release profile. DOX-loaded POEG-b-PSAHA exhibited more potent cytotoxicity towards tumour cells than free DOX and DOX loaded in a pharmacologically 'inert' nanocarrier, POEG-b-POM. Consistently, DOX/POEG-b-PSAHA formulation resulted in an improved therapeutic effect in vivo compared to free DOX, Doxil or DOX formulated in POEG-b-POM micelles. These results suggest that SAHA-based prodrug micelles may serve as a dual functional carrier for combination strategies in epigenetic-oriented anticancer therapy.
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Affiliation(s)
- Jieni Xu
- a Center for Pharmacogenetics , University of Pittsburgh , Pittsburgh , PA , USA.,b Department of Pharmaceutical Sciences , School of Pharmacy, University of Pittsburgh , Pittsburgh , PA , USA.,c University of Pittsburgh Cancer Institute , Pittsburgh , PA , USA
| | - Jingjing Sun
- a Center for Pharmacogenetics , University of Pittsburgh , Pittsburgh , PA , USA.,b Department of Pharmaceutical Sciences , School of Pharmacy, University of Pittsburgh , Pittsburgh , PA , USA.,c University of Pittsburgh Cancer Institute , Pittsburgh , PA , USA
| | - Pengcheng Wang
- a Center for Pharmacogenetics , University of Pittsburgh , Pittsburgh , PA , USA.,b Department of Pharmaceutical Sciences , School of Pharmacy, University of Pittsburgh , Pittsburgh , PA , USA
| | - Xiaochao Ma
- a Center for Pharmacogenetics , University of Pittsburgh , Pittsburgh , PA , USA.,b Department of Pharmaceutical Sciences , School of Pharmacy, University of Pittsburgh , Pittsburgh , PA , USA
| | - Song Li
- a Center for Pharmacogenetics , University of Pittsburgh , Pittsburgh , PA , USA.,b Department of Pharmaceutical Sciences , School of Pharmacy, University of Pittsburgh , Pittsburgh , PA , USA.,c University of Pittsburgh Cancer Institute , Pittsburgh , PA , USA
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25
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Chang YL, Huang LC, Chen YC, Wang YW, Hueng DY, Huang SM. The synergistic effects of valproic acid and fluvastatin on apoptosis induction in glioblastoma multiforme cell lines. Int J Biochem Cell Biol 2017; 92:155-163. [DOI: 10.1016/j.biocel.2017.10.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 10/03/2017] [Accepted: 10/06/2017] [Indexed: 01/03/2023]
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26
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Eyüpoglu IY, Savaskan NE. Epigenetics in Brain Tumors: HDACs Take Center Stage. Curr Neuropharmacol 2016; 14:48-54. [PMID: 26521944 PMCID: PMC4787285 DOI: 10.2174/1570159x13666151030162457] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 06/22/2015] [Accepted: 10/12/2015] [Indexed: 12/14/2022] Open
Abstract
Primary tumors of the brain account for 2 % of all cancers with malignant gliomas taking the lion’s share at 70 %. Malignant gliomas (high grade gliomas WHO° III and °IV) belong to one of the most threatening tumor entities known for their disappointingly short median survival time of just 14 months despite maximum therapy according to current gold standards. Malignant gliomas manifest various factors, through which they adapt and manipulate the tumor microenvironment to their advantage. Epigenetic mechanisms operate on the tumor microenvironment by de- and methylation processes and imbalances between the histone deacetylases (HDAC) and histone acetylases (HAT). Many compounds have been discovered modulating epigenetically controlled signals. Recent studies indicate that xCT (system xc-, SLC7a11) and CD44 (H-CAM, ECM-III, HUTCH-1) functions as a bridge between these epigenetic regulatory mechanisms and malignant glioma progression. The question that ensues is the extent to which therapeutic intervention on these signaling pathways would exert influence on the treatment of malignant gliomas as well as the extent to which manipulation of HDAC activity can sensitize tumor cells for chemotherapeutics through ‘epigenetic priming’. In light of considering the current stagnation in the development of therapeutic options, the need for new strategies in the treatment of gliomas has never been so pressing. In this context the possibility of pharmacological intervention on tumor-associated genes by epigenetic priming opens a novel path in the treatment of primary brain tumors.
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Affiliation(s)
- Ilker Y Eyüpoglu
- Department of Neurosurgery, Universitätsklinikum Erlangen, University of Erlangen- Nürnberg, Schwabachanlage 6, 91054 Erlangen, Germany.
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27
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Abstract
INTRODUCTION Despite substantial improvements in standards of care, the most common aggressive pediatric and adult high-grade gliomas (HGG) carry uniformly fatal diagnoses due to unique treatment limitations, high recurrence rates and the absence of effective treatments following recurrence. Recent advancements in our understanding of the pathophysiology, genetics and epigenetics as well as mechanisms of immune surveillance during gliomagenesis have created new knowledge to design more effective and target-directed therapies to improve patient outcomes. AREAS COVERED In this review, the authors discuss the critical genetic, epigenetic and immunologic aberrations found in gliomas that appear rational and promising for therapeutic developments in the presence and future. The current state of the latest therapeutic developments including tumor-specific targeted drug therapies, metabolic targeting, epigenetic modulation and immunotherapy are summarized and suggestions for future directions are offered. Furthermore, they highlight contemporary issues related to the clinical development, such as challenges in clinical trials and toxicities. EXPERT OPINION The commitment to understanding the process of gliomagenesis has created a catalogue of aberrations that depict multiple mechanisms underlying this disease, many of which are suitable to therapeutic inhibition and are currently tested in clinical trials. Thus, future treatment endeavors will employ multiple treatment modalities that target disparate tumor characteristics personalized to the patient's individual tumor.
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Affiliation(s)
- Verena Staedtke
- a Department of Neurology , Johns Hopkins Medical Institutions , Baltimore , MD , USA
| | - Ren-Yuan Bai
- b Department of Neurosurgery , Johns Hopkins Medical Institutions , Baltimore , MD , USA
| | - John Laterra
- a Department of Neurology , Johns Hopkins Medical Institutions , Baltimore , MD , USA.,c Department of Oncology , Johns Hopkins Medical Institutions , Baltimore , MD , USA.,d Department of Neuroscience , Johns Hopkins Medical Institutions , Baltimore , MD , USA
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28
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Rasmussen RD, Gajjar MK, Jensen KE, Hamerlik P. Enhanced efficacy of combined HDAC and PARP targeting in glioblastoma. Mol Oncol 2016; 10:751-63. [PMID: 26794465 DOI: 10.1016/j.molonc.2015.12.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 12/23/2015] [Accepted: 12/30/2015] [Indexed: 01/07/2023] Open
Abstract
Recent clinical trials have demonstrated that targeting chromatin remodeling factors is as a promising strategy for the treatment of glioblastoma (GBM). We and others have shown constitutive activation of DNA damage response (DDR) pathways in gliomas and suggested that targeting the DDR may improve the currently grim prognosis for patients. Based on our previous findings that inhibition of poly(ADP-ribose) polymerase (PARP) increases radio-sensitivity of the notoriously radio-resistant GBM cells, we hypothesized that epigenetic down-regulation of the DDR responses and induction of oxidative stress via HDAC inhibition would contribute to more efficient targeting of this deadly disease. Our data show that SAHA, an HDAC class I + II inhibitor, in combination with olaparib (PARP inhibitor): i) enhanced inhibition of GBM cell survival, ii) induced apoptosis, and iii) impaired cell cycle progression. These results provide a pre-clinical rationale for combined administration of SAHA and olaparib, which are already individually in clinical trials.
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Affiliation(s)
- Rikke D Rasmussen
- Brain Tumor Biology Group, Danish Cancer Society Research Center, Strandboulevarden 49, 2100-DK, Copenhagen, Denmark
| | - Madhavsai K Gajjar
- Brain Tumor Biology Group, Danish Cancer Society Research Center, Strandboulevarden 49, 2100-DK, Copenhagen, Denmark
| | - Kamilla E Jensen
- Brain Tumor Biology Group, Danish Cancer Society Research Center, Strandboulevarden 49, 2100-DK, Copenhagen, Denmark
| | - Petra Hamerlik
- Brain Tumor Biology Group, Danish Cancer Society Research Center, Strandboulevarden 49, 2100-DK, Copenhagen, Denmark; Department of Radiation Biology, The Finsen Center, Copenhagen University Hospital, Blegdamsvej 9, 2100-DK, Copenhagen, Denmark.
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29
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Abstract
Vorinostat is a new drug used in the management of cutaneous T cell lymphoma when the disease persists, gets worse or comes back during or after treatment with other medicines. It is an efficacious and well tolerated drug and has been considered a novel drug in the treatment of this condition. Currently apart from cutaneous T cell lymphoma the role of Vorinostat for other types of cancers is being investigated both as mono-therapy and combination therapy.
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30
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Dreser N, Zimmer B, Dietz C, Sügis E, Pallocca G, Nyffeler J, Meisig J, Blüthgen N, Berthold MR, Waldmann T, Leist M. Grouping of histone deacetylase inhibitors and other toxicants disturbing neural crest migration by transcriptional profiling. Neurotoxicology 2015; 50:56-70. [PMID: 26238599 DOI: 10.1016/j.neuro.2015.07.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 07/28/2015] [Accepted: 07/28/2015] [Indexed: 12/13/2022]
Abstract
Functional assays, such as the "migration inhibition of neural crest cells" (MINC) developmental toxicity test, can identify toxicants without requiring knowledge on their mode of action (MoA). Here, we were interested, whether (i) inhibition of migration by structurally diverse toxicants resulted in a unified signature of transcriptional changes; (ii) whether statistically-identified transcript patterns would inform on compound grouping even though individual genes were little regulated, and (iii) whether analysis of a small group of biologically-relevant transcripts would allow the grouping of compounds according to their MoA. We analyzed transcripts of 35 'migration genes' after treatment with 16 migration-inhibiting toxicants. Clustering, principal component analysis and correlation analyses of the data showed that mechanistically related compounds (e.g. histone deacetylase inhibitors (HDACi), PCBs) triggered similar transcriptional changes, but groups of structurally diverse toxicants largely differed in their transcriptional effects. Linear discriminant analysis (LDA) confirmed the specific clustering of HDACi across multiple separate experiments. Similarity of the signatures of the HDACi trichostatin A and suberoylanilide hydroxamic acid to the one of valproic acid (VPA), suggested that the latter compound acts as HDACi when impairing neural crest migration. In conclusion, the data suggest that (i) a given functional effect (e.g. inhibition of migration) can be associated with highly diverse signatures of transcript changes; (ii) statistically significant grouping of mechanistically-related compounds can be achieved on the basis of few genes with small regulations. Thus, incorporation of mechanistic markers in functional in vitro tests may support read-across procedures, also for structurally un-related compounds.
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Affiliation(s)
- Nadine Dreser
- Doerenkamp-Zbinden Chair of In Vitro Toxicology and Biomedicine, University of Konstanz, Konstanz, Germany
| | - Bastian Zimmer
- Center for Stem Cell Biology, Sloan-Kettering Institute, New York City, NY, USA; Developmental Biology Program, Sloan-Kettering Institute, New York City, NY, USA.
| | - Christian Dietz
- Lehrstuhl für Bioinformatik und Information Mining, University of Konstanz, Konstanz, Germany
| | - Elena Sügis
- Institute of Computer Science, University of Tartu, Tartu, Estonia
| | - Giorgia Pallocca
- Doerenkamp-Zbinden Chair of In Vitro Toxicology and Biomedicine, University of Konstanz, Konstanz, Germany
| | - Johanna Nyffeler
- Doerenkamp-Zbinden Chair of In Vitro Toxicology and Biomedicine, University of Konstanz, Konstanz, Germany
| | - Johannes Meisig
- Institute of Pathology, Charité-Universitätsmedizin, 10117 Berlin, Germany; Integrative Research Institute for the Life Sciences and Institute for Theoretical Biology, Humboldt Universität, 10115 Berlin, Germany
| | - Nils Blüthgen
- Institute of Pathology, Charité-Universitätsmedizin, 10117 Berlin, Germany; Integrative Research Institute for the Life Sciences and Institute for Theoretical Biology, Humboldt Universität, 10115 Berlin, Germany
| | - Michael R Berthold
- Lehrstuhl für Bioinformatik und Information Mining, University of Konstanz, Konstanz, Germany
| | - Tanja Waldmann
- Doerenkamp-Zbinden Chair of In Vitro Toxicology and Biomedicine, University of Konstanz, Konstanz, Germany
| | - Marcel Leist
- Doerenkamp-Zbinden Chair of In Vitro Toxicology and Biomedicine, University of Konstanz, Konstanz, Germany
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31
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Susanto JM, Colvin EK, Pinese M, Chang DK, Pajic M, Mawson A, Caldon CE, Musgrove EA, Henshall SM, Sutherland RL, Biankin AV, Scarlett CJ. The epigenetic agents suberoylanilide hydroxamic acid and 5‑AZA‑2' deoxycytidine decrease cell proliferation, induce cell death and delay the growth of MiaPaCa2 pancreatic cancer cells in vivo. Int J Oncol 2015; 46:2223-30. [PMID: 25695794 DOI: 10.3892/ijo.2015.2894] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 09/07/2014] [Indexed: 11/06/2022] Open
Abstract
Despite incremental advances in the diagnosis and treatment for pancreatic cancer (PC), the 5‑year survival rate remains <5%. Novel therapies to increase survival and quality of life for PC patients are desperately needed. Epigenetic thera-peutic agents such as histone deacetylase inhibitors (HDACi) and DNA methyltransferase inhibitors (DNMTi) have demonstrated therapeutic benefits in human cancer. We assessed the efficacy of these epigenetic therapeutic agents as potential therapies for PC using in vitro and in vivo models. Treatment with HDACi [suberoylanilide hydroxamic acid (SAHA)] and DNMTi [5‑AZA‑2' deoxycytidine (5‑AZA‑dc)] decreased cell proliferation in MiaPaCa2 cells, and SAHA treatment, with or without 5‑AZA‑dc, resulted in higher cell death and lower DNA synthesis compared to 5‑AZA‑dc alone and controls (DMSO). Further, combination treatment with SAHA and 5‑AZA‑dc significantly increased expression of p21WAF1, leading to G1 arrest. Treatment with epigenetic agents delayed tumour growth in vivo, but did not decrease growth of established pancreatic tumours. In conclusion, these data demonstrate a potential role for epigenetic modifier drugs for the management of PC, specifically in the chemoprevention of PC, in combination with other chemotherapeutic agents.
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Affiliation(s)
- Johana M Susanto
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Emily K Colvin
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Mark Pinese
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - David K Chang
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Marina Pajic
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Amanda Mawson
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - C Elizabeth Caldon
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Elizabeth A Musgrove
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Susan M Henshall
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Robert L Sutherland
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Andrew V Biankin
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Christopher J Scarlett
- Cancer Research Program, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
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Hatipoglu G, Hock SW, Weiss R, Fan Z, Sehm T, Ghoochani A, Buchfelder M, Savaskan NE, Eyüpoglu IY. Sunitinib impedes brain tumor progression and reduces tumor-induced neurodegeneration in the microenvironment. Cancer Sci 2015; 106:160-70. [PMID: 25458015 PMCID: PMC4399021 DOI: 10.1111/cas.12580] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 11/25/2014] [Accepted: 11/26/2014] [Indexed: 12/19/2022] Open
Abstract
Malignant gliomas can be counted to the most devastating tumors in humans. Novel therapies do not achieve significant prolonged survival rates. The cancer cells have an impact on the surrounding vital tissue and form tumor zones, which make up the tumor microenvironment. We investigated the effects of sunitinib, a small molecule multitargeted receptor tyrosine kinase inhibitor, on constituents of the tumor microenvironment such as gliomas, astrocytes, endothelial cells, and neurons. Sunitinib has a known anti-angiogenic effect. We found that sunitinib normalizes the aberrant tumor-derived vasculature and reduces tumor vessel pathologies (i.e. auto-loops). Sunitinib has only minor effects on the normal, physiological, non-proliferating vasculature. We found that neurons and astrocytes are protected by sunitinib against glutamate-induced cell death, whereas sunitinib acts as a toxin towards proliferating endothelial cells and tumor vessels. Moreover, sunitinib is effective in inducing glioma cell death. We determined the underlying pathways by which sunitinib operates as a toxin on gliomas and found vascular endothelial growth factor receptor 2 (VEGFR2, KDR/Flk1) as the main target to execute gliomatoxicity. The apoptosis-inducing effect of sunitinib can be mimicked by inhibition of VEGFR2. Knockdown of VEGFR2 can, in part, foster the resistance of glioma cells to receptor tyrosine kinase inhibitors. Furthermore, sunitinib alleviates tumor-induced neurodegeneration. Hence, we tested whether temozolomide treatment could be potentiated by sunitinib application. Here we show that sunitinib can amplify the effects of temozolomide in glioma cells. Thus, our data indicate that combined treatment with temozolomide does not abrogate the effects of sunitinib. In conclusion, we found that sunitinib acts as a gliomatoxic agent and at the same time carries out neuroprotective effects, reducing tumor-induced neurodegeneration. Thus, this report uncovered sunitinib's actions on the brain tumor microenvironment, revealing novel aspects for adjuvant approaches and new clinical assessment criteria when applied to brain tumor patients.
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Affiliation(s)
- Gökçe Hatipoglu
- Department of Neurosurgery, Universitätsklinikum Erlangen, Friedrich Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
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Lee EQ, Reardon DA, Schiff D, Drappatz J, Muzikansky A, Grimm SA, Norden AD, Nayak L, Beroukhim R, Rinne ML, Chi AS, Batchelor TT, Hempfling K, McCluskey C, Smith KH, Gaffey SC, Wrigley B, Ligon KL, Raizer JJ, Wen PY. Phase II study of panobinostat in combination with bevacizumab for recurrent glioblastoma and anaplastic glioma. Neuro Oncol 2015; 17:862-7. [PMID: 25572329 DOI: 10.1093/neuonc/nou350] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 12/05/2014] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Panobinostat is a histone deacetylase inhibitor with antineoplastic and antiangiogenic effects in glioma that may work synergistically with bevacizumab. We conducted a multicenter phase II trial of panobinostat combined with bevacizumab in patients with recurrent high-grade glioma (HGG). METHODS Patients with recurrent HGG were treated with oral panobinostat 30 mg 3 times per week, every other week, in combination with bevacizumab 10 mg/kg every other week. The primary endpoint was a 6-month progression-fee survival (PFS6) rate for participants with recurrent glioblastoma (GBM). Patients with recurrent anaplastic glioma (AG) were evaluated as an exploratory arm of the study. RESULTS At interim analysis, the GBM arm did not meet criteria for continued accrual, and the GBM arm was closed. A total of 24 patients with GBM were accrued prior to closure. The PFS6 rate was 30.4% (95%, CI 12.4%-50.7%), median PFS was 5 months (range, 3-9 months), and median overall survival (OS) was 9 months (range, 6-19 months). Accrual in the AG arm continued to completion, and a total of 15 patients were enrolled. The PFS6 rate was 46.7% (range, 21%-73%), median PFS was 7 months (range, 2-10 months), and median OS was 17 months (range, 5 months-27 months). CONCLUSIONS This phase II study of panobinostat and bevacizumab in participants with recurrent GBM did not meet criteria for continued accrual, and the GBM cohort of the study was closed. Although it was reasonably well tolerated, the addition of panobinostat to bevacizumab did not significantly improve PFS6 compared with historical controls of bevacizumab monotherapy in either cohort.
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Affiliation(s)
- Eudocia Q Lee
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - David A Reardon
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - David Schiff
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Jan Drappatz
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Alona Muzikansky
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Sean A Grimm
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Andrew D Norden
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Lakshmi Nayak
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Rameen Beroukhim
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Mikael L Rinne
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Andrew S Chi
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Tracy T Batchelor
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Kelly Hempfling
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Christine McCluskey
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Katrina H Smith
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Sarah C Gaffey
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Brendan Wrigley
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Keith L Ligon
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Jeffrey J Raizer
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
| | - Patrick Y Wen
- Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, Massachusetts (E.Q.L., D.A.R., A.D.N., L.N., R.B., M.L.R., K.H., C.M., K.H.S., S.C.G., B.W., K.L.L., P.Y.W.); University of Virginia, Charlottesville, Virginia (D.S.); University of Pittsburgh, Pittsburgh, Pennsylvania (J.D.); Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts (A.S.C., T,T.B., A.M.); Central DuPage Hospital, Warrenville, Illinois (S.A.G.); Northwestern University, Chicago, Illinois (J.J.R.)
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Wolf IML, Fan Z, Rauh M, Seufert S, Hore N, Buchfelder M, Savaskan NE, Eyüpoglu IY. Histone deacetylases inhibition by SAHA/Vorinostat normalizes the glioma microenvironment via xCT equilibration. Sci Rep 2014; 4:6226. [PMID: 25228443 PMCID: PMC4165982 DOI: 10.1038/srep06226] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 08/04/2014] [Indexed: 12/13/2022] Open
Abstract
Malignant gliomas are characterized by neurodegenerative actions leading to the destruction of surrounding brain parenchyma. The disturbance in glutamate homeostasis caused by increased expression of the glutamate transporter xCT plays a key role in glioma progression. We demonstrate that the HDAC-inhibitor SAHA specifically inhibits the xCT-transporter expression. Thereby, tumor cell stress is engendered, marked by increase in ROS. Moreover, SAHA dependent xCT-reduction correlates with the inhibition of ATF4-expression, a factor known to foster xCT expression. Since xCT/system Xc- is pivotal for the brain tumor microenvironment, normalization of this system is a key in the management of malignant gliomas. To date, the problem lay in the inability to specifically target xCT due to the ubiquitous expression of the xCT-transporter—i.e. in non-cancerously transformed cells too—as well as its essential role in physiological CNS processes. Here, we show xCT-transporter equilibration through SAHA is specific for malignant brain tumors whereas SAHA does not affect the physiological xCT levels in healthy brain parenchyma. Our data indicate that SAHA operates on gliomas specifically via normalizing xCT expression which in consequence leads to reduced extracellular glutamate levels. This in turn causes a marked reduction in neuronal cell death and normalized tumor microenvironment.
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Affiliation(s)
- Ines M L Wolf
- 1] Department of Neurosurgery, Universitätsklinikum Erlangen, Friedrich Alexander Universität Erlangen-Nürnberg (FAU) [2]
| | - Zheng Fan
- 1] Department of Neurosurgery, Universitätsklinikum Erlangen, Friedrich Alexander Universität Erlangen-Nürnberg (FAU) [2]
| | - Manfred Rauh
- Department of Pediatrics and Adolescent Medicine, University of Erlangen-Nuremberg
| | | | - Nirjhar Hore
- Department of Neurosurgery, Universitätsklinikum Erlangen, Friedrich Alexander Universität Erlangen-Nürnberg (FAU)
| | - Michael Buchfelder
- Department of Neurosurgery, Universitätsklinikum Erlangen, Friedrich Alexander Universität Erlangen-Nürnberg (FAU)
| | - Nic E Savaskan
- 1] Department of Neurosurgery, Universitätsklinikum Erlangen, Friedrich Alexander Universität Erlangen-Nürnberg (FAU) [2]
| | - Ilker Y Eyüpoglu
- 1] Department of Neurosurgery, Universitätsklinikum Erlangen, Friedrich Alexander Universität Erlangen-Nürnberg (FAU) [2]
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Kim H, Hwang JS, Lee B, Hong J, Lee S. Newly Identified Cancer-Associated Role of Human Neuronal Growth Regulator 1 (NEGR1). J Cancer 2014; 5:598-608. [PMID: 25057311 PMCID: PMC4107236 DOI: 10.7150/jca.8052] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 05/16/2014] [Indexed: 01/08/2023] Open
Abstract
Neuronal growth regulator 1 (NEGR1) has become a great interest based on the recent findings that its genetic alteration is implicated in human obesity and human dyslexia. By analyzing the gene expression profiles of tumor biopsies and normal tissues, we identified NEGR1 as a commonly down-regulated gene in many types of human cancer tissues. NEGR1 contains a C-terminal GPI anchor attachment site and is primarily localized to cell membrane rafts, especially in cell-to-cell contacting areas. The oncogenic phenotype was clearly attenuated when NEGR1 was overexpressed in the human ovarian cancer cell line SKOV-3. Furthermore, cell aggregation and neurite outgrowth was greatly increased by NEGR1 overexpression. On the contrary, cell migration and invasion was increased in NEGR1-depleted cells, suggesting that NEGR1 may contribute to tumor suppression. Taken together, we suggest that NEGR1 is a raft-associated extracellular protein that may participate in cell recognition and interaction, which is important in growth control and malignant transformation.
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Affiliation(s)
- Hyejin Kim
- 1. Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Republic of Korea
| | - Ji-Sook Hwang
- 1. Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Republic of Korea
| | - Bogman Lee
- 2. LG Life Sciences, Ltd., R&D Park, Moonji-dong, Daejeon, Republic of Korea
| | - Jinpyo Hong
- 3. Department of oral physiology, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - Soojin Lee
- 1. Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon, Republic of Korea
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Bezecny P. Histone deacetylase inhibitors in glioblastoma: pre-clinical and clinical experience. Med Oncol 2014; 31:985. [PMID: 24838514 DOI: 10.1007/s12032-014-0985-5] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Accepted: 04/26/2014] [Indexed: 12/22/2022]
Abstract
Epigenetic mechanisms are increasingly recognized as a major factor contributing to pathogenesis of cancer including glioblastoma, the most common and most malignant primary brain tumour in adults. Enzymatic modifications of histone proteins regulating gene expression are being exploited for therapeutic drug targeting. Over the last decade, numerous studies have shown promising results with histone deacetylase (HDAC) inhibitors in various malignancies. This article provides a brief overview of mechanism of anti-cancer effect and pharmacology of HDAC inhibitors and summarizes results from pre-clinical and clinical studies in glioblastoma. It analyses experience with HDAC inhibitors as single agents as well as in combination with targeted agents, cytotoxic chemotherapy and radiotherapy. Hallmark features of glioblastoma, such as uncontrolled cellular proliferation, invasion, angiogenesis and resistance to apoptosis, have been shown to be targeted by HDAC inhibitors in experiments with glioblastoma cell lines. Vorinostat is the most advanced HDAC inhibitor that entered clinical trials in glioblastoma, showing activity in recurrent disease. Multiple phase II trials with vorinostat in combination with targeted agents, temozolomide and radiotherapy are currently recruiting. While the results from pre-clinical studies are encouraging, early clinical trials showed only modest benefit and the value of HDAC inhibitors for clinical practice will need to be confirmed in larger prospective trials. Further research in epigenetic mechanisms driving glioblastoma pathogenesis and identification of molecular subtypes of glioblastoma is needed. This will hopefully lead to better selection of patients who will benefit from treatment with HDAC inhibitors.
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Affiliation(s)
- Pavel Bezecny
- Rosemere Cancer Centre, Lancashire Teaching Hospitals NHS Foundation Trust, Sharoe Green Lane, Preston, PR2 9HT, UK,
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Vorinostat as a radiosensitizer for brain metastasis: a phase I clinical trial. J Neurooncol 2014; 118:313-319. [PMID: 24728831 DOI: 10.1007/s11060-014-1433-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Accepted: 03/31/2014] [Indexed: 10/25/2022]
Abstract
Perform a phase I study to evaluate the safety, and tolerability of vorinostat, an HDAC inhibitor, when combined with whole brain radiation treatment (WBRT) in patients with brain metastasis. A multi-institutional phase I clinical trial enrolled patients with a histological diagnosis of malignancy and radiographic evidence of brain metastasis. WBRT was 37.5 Gy in 2.5 Gy fractions delivered over 3 weeks. Vorinostat was administrated by mouth, once daily, Monday through Friday, concurrently with radiation treatment. The vorinostat dose was escalated from 200 to 400 mg daily using a 3+3 trial design. Seventeen patients were enrolled, 4 patients were excluded from the analysis due to either incorrect radiation dose (n = 1), or early treatment termination due to disease progression (n = 3). There were no treatment related grade 3 or higher toxicities in the 200 and 300 mg dose levels. In the 400 mg cohort there was a grade 3 pulmonary embolus and one death within 30 days of treatment. Both events were most likely related to disease progression rather than treatment; nonetheless, we conservatively classified the death as a dose limiting toxicity. We found Vorinostat administered with concurrent WBRT to be well tolerated to a dose of 300 mg once daily. This is the recommended dose for phase II study.
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38
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Sassi FDA, Caesar L, Jaeger M, Nör C, Abujamra AL, Schwartsmann G, de Farias CB, Brunetto AL, Lopez PLDC, Roesler R. Inhibitory activities of trichostatin a in U87 glioblastoma cells and tumorsphere-derived cells. J Mol Neurosci 2014; 54:27-40. [PMID: 24464841 DOI: 10.1007/s12031-014-0241-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 01/14/2014] [Indexed: 12/11/2022]
Abstract
Epigenetic alterations have been increasingly implicated in glioblastoma (GBM) pathogenesis, and epigenetic modulators including histone deacetylase inhibitors (HDACis) have been investigated as candidate therapies. GBMs are proposed to contain a subpopulation of glioblastoma stem cells (GSCs) that sustain tumor progression and therapeutic resistance and can form tumorspheres in culture. Here, we investigate the effects of the HDACi trichostatin A (TSA) in U87 GBM cultures and tumorsphere-derived cells. Using approaches that include a novel method to measure tumorsphere sizes and the area covered by spheres in GBM cultures, as well as a nuclear morphometric analysis, we show that TSA reduced proliferation and colony sizes, led to G2/M arrest, induced alterations in nuclear morphology consistent with cell senescence, and increased the protein content of GFAP, but did not affect migration, in cultured human U87 GBM cells. In cells expanded in tumorsphere assays, TSA reduced sphere formation and induced neuron-like morphological changes. The expression of stemness markers in these cells was detected by reverse transcriptase polymerase chain reaction. These findings indicate that HDACis can inhibit proliferation, survival, and tumorsphere formation, and promote differentiation of U87 GBM cells, providing further evidence for the development of HDACis as potential therapeutics against GBM.
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Affiliation(s)
- Felipe de Almeida Sassi
- Cancer Research Laboratory, University Hospital Research Center (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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Jin H, Liang L, Liu L, Deng W, Liu J. HDAC inhibitor DWP0016 activates p53 transcription and acetylation to inhibit cell growth in U251 glioblastoma cells. J Cell Biochem 2013; 114:1498-509. [PMID: 23297003 DOI: 10.1002/jcb.24491] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 12/18/2012] [Indexed: 11/11/2022]
Abstract
Here we report a hydroacid named DWP0016, which exhibited HDAC inhibition and induced p53 acetylation in U251 glioblastoma cells. DWP0016 effectively inhibited the cell growth of U251 cells and other four carcinoma cell lines but did not affect the normal cells. Cell cycle distribution analysis showed DWP0016 arrested at G1 phase cell cycle dose-dependently in U251 cells. DWP0016 induced caspase-dependent and independent apoptosis in U251 cells, which was identified by flow cytometry analysis, caspases activity analysis, Western blotting assay, and caspases inhibition. Mechanisms research suggested that DWP0016 activated transcription and acetylation of tumor suppressor p53. DWP0016 regulated p300, CBP, and PCAF to facilitate p53 acetylation at lys382 in U251 cells. In addition, activation of p53 by DWP0016 promoted PUMA to catalyze mitochondrial pathway. Besides, siRNA assay indicated p53 was the key gene to induce growth inhibition, cell cycle arrest, and apoptosis in DWP0016 treated U251 cells. Conclusively, our results show DWP0016 is a potent HDAC inhibitor and the anti-tumor activity is consistent with its intended p53 activation mechanisms. These findings indicate the promising antitumor potential of DWP0016 for further glioblastoma treatment applications.
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Affiliation(s)
- Hui Jin
- State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, People's Republic of China
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Singh J, Khan M, Pujol A, Baarine M, Singh I. Histone deacetylase inhibitor upregulates peroxisomal fatty acid oxidation and inhibits apoptotic cell death in abcd1-deficient glial cells. PLoS One 2013; 8:e70712. [PMID: 23923017 PMCID: PMC3724778 DOI: 10.1371/journal.pone.0070712] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Accepted: 06/26/2013] [Indexed: 11/22/2022] Open
Abstract
In X-ALD, mutation/deletion of ALD gene (ABCD1) and the resultant very long chain fatty acid (VLCFA) derangement has dramatically opposing effects in astrocytes and oligodendrocytes. While loss of Abcd1 in astrocytes produces a robust inflammatory response, the oligodendrocytes undergo cell death leading to demyelination in X-linked adrenoleukodystrophy (X-ALD). The mechanisms of these distinct pathways in the two cell types are not well understood. Here, we investigated the effects of Abcd1-knockdown and the subsequent alteration in VLCFA metabolism in human U87 astrocytes and rat B12 oligodendrocytes. Loss of Abcd1 inhibited peroxisomal β-oxidation activity and increased expression of VLCFA synthesizing enzymes, elongase of very long chain fatty acids (ELOVLs) (1 and 3) in both cell types. However, higher induction of ELOVL's in Abcd1-deficient B12 oligodendrocytes than astrocytes suggests that ELOVL pathway may play a prominent role in oligodendrocytes in X-ALD. While astrocytes are able to maintain the cellular homeostasis of anti-apoptotic proteins, Abcd1-deletion in B12 oligodendrocytes downregulated the anti-apototic (Bcl-2 and Bcl-xL) and cell survival (phospho-Erk1/2) proteins, and upregulated the pro-apoptotic proteins (Bad, Bim, Bax and Bid) leading to cell loss. These observations provide insights into different cellular signaling mechanisms in response to Abcd1-deletion in two different cell types of CNS. The apoptotic responses were accompanied by activation of caspase-3 and caspase-9 suggesting the involvement of mitochondrial-caspase-9-dependent mechanism in Abcd1-deficient oligodendrocytes. Treatment with histone deacetylase (HDAC) inhibitor suberoylanilide hydroxamic acid (SAHA) corrected the VLCFA derangement both in vitro and in vivo, and inhibited the oligodendrocytes loss. These observations provide a proof-of principle that HDAC inhibitor SAHA may have a therapeutic potential for X-ALD.
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Affiliation(s)
- Jaspreet Singh
- Department of Pediatrics, Darby Children Research Institute, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Mushfiquddin Khan
- Department of Pediatrics, Darby Children Research Institute, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Aurora Pujol
- Neurometabolic Diseases Laboratory, Institute of Neuropathology, Bellvitge Institute for Biomedical Research (IDIBELL), Hospitalet de Llobregat, Barcelona, Spain
- Center for Biomedical Research on Rare Diseases (CIBERER), Barcelona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Mauhamad Baarine
- Department of Pediatrics, Darby Children Research Institute, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Inderjit Singh
- Department of Pediatrics, Darby Children Research Institute, Medical University of South Carolina, Charleston, South Carolina, United States of America
- * E-mail:
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Carén H, Pollard SM, Beck S. The good, the bad and the ugly: epigenetic mechanisms in glioblastoma. Mol Aspects Med 2013; 34:849-62. [PMID: 22771539 PMCID: PMC3714597 DOI: 10.1016/j.mam.2012.06.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 06/27/2012] [Indexed: 12/31/2022]
Abstract
Cell type-specific patterns of gene expression reflect epigenetic changes imposed through a particular developmental lineage as well as those triggered by environmental cues within adult tissues. There is great interest in elucidating the molecular basis and functional importance of epigenetic mechanisms in both normal physiology and disease - particularly in cancer, where abnormal '-omic' states are often observed. In this article we review recent progress in studies of epigenetic mechanisms in the most common primary adult brain cancer, glioblastoma multiforme. Three distinct areas are discussed. First, the evidence in support of ongoing 'normal' epigenetic processes associated with differentiation - as predicted by 'cancer stem cell' models of the disease. Second, identification of site-specific and global epigenetic abnormalities. Third, genetic disruptions directly within the core epigenetic machinery, exemplified by the recently identified mutations within isocitrate dehydrogenase genes IDH1/2 and variant histone genes H3.3/H3F3A. These constitute the 'good, the bad and the ugly' of epigenetic mechanisms in cancer.
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Affiliation(s)
- Helena Carén
- UCL Cancer Institute, University College London, 72 Huntley Street, London WC1E 6BT, United Kingdom
| | - Steven M. Pollard
- UCL Cancer Institute, University College London, 72 Huntley Street, London WC1E 6BT, United Kingdom
| | - Stephan Beck
- UCL Cancer Institute, University College London, 72 Huntley Street, London WC1E 6BT, United Kingdom
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Linking proteomic and transcriptional data through the interactome and epigenome reveals a map of oncogene-induced signaling. PLoS Comput Biol 2013; 9:e1002887. [PMID: 23408876 PMCID: PMC3567149 DOI: 10.1371/journal.pcbi.1002887] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Accepted: 11/30/2012] [Indexed: 02/06/2023] Open
Abstract
Cellular signal transduction generally involves cascades of post-translational protein modifications that rapidly catalyze changes in protein-DNA interactions and gene expression. High-throughput measurements are improving our ability to study each of these stages individually, but do not capture the connections between them. Here we present an approach for building a network of physical links among these data that can be used to prioritize targets for pharmacological intervention. Our method recovers the critical missing links between proteomic and transcriptional data by relating changes in chromatin accessibility to changes in expression and then uses these links to connect proteomic and transcriptome data. We applied our approach to integrate epigenomic, phosphoproteomic and transcriptome changes induced by the variant III mutation of the epidermal growth factor receptor (EGFRvIII) in a cell line model of glioblastoma multiforme (GBM). To test the relevance of the network, we used small molecules to target highly connected nodes implicated by the network model that were not detected by the experimental data in isolation and we found that a large fraction of these agents alter cell viability. Among these are two compounds, ICG-001, targeting CREB binding protein (CREBBP), and PKF118–310, targeting β-catenin (CTNNB1), which have not been tested previously for effectiveness against GBM. At the level of transcriptional regulation, we used chromatin immunoprecipitation sequencing (ChIP-Seq) to experimentally determine the genome-wide binding locations of p300, a transcriptional co-regulator highly connected in the network. Analysis of p300 target genes suggested its role in tumorigenesis. We propose that this general method, in which experimental measurements are used as constraints for building regulatory networks from the interactome while taking into account noise and missing data, should be applicable to a wide range of high-throughput datasets. The ways in which cells respond to changes in their environment are controlled by networks of physical links among the proteins and genes. The initial signal of a change in conditions rapidly passes through these networks from the cytoplasm to the nucleus, where it can lead to long-term alterations in cellular behavior by controlling the expression of genes. These cascades of signaling events underlie many normal biological processes. As a result, being able to map out how these networks change in disease can provide critical insights for new approaches to treatment. We present a computational method for reconstructing these networks by finding links between the rapid short-term changes in proteins and the longer-term changes in gene regulation. This method brings together systematic measurements of protein signaling, genome organization and transcription in the context of protein-protein and protein-DNA interactions. When used to analyze datasets from an oncogene expressing cell line model of human glioblastoma, our approach identifies key nodes that affect cell survival and functional transcriptional regulators.
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Bradley KA, Zhou T, McNall-Knapp RY, Jakacki RI, Levy AS, Vezina G, Pollack IF. Motexafin-gadolinium and involved field radiation therapy for intrinsic pontine glioma of childhood: a children's oncology group phase 2 study. Int J Radiat Oncol Biol Phys 2012; 85:e55-60. [PMID: 23092726 DOI: 10.1016/j.ijrobp.2012.09.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 08/31/2012] [Accepted: 09/04/2012] [Indexed: 01/08/2023]
Abstract
PURPOSE To evaluate the effects on 1-year event-free survival (EFS) and overall survival (OS) of combining motexafin and gadolinium (MGd), a potent radiosensitizer, with daily fractionated radiation therapy in children with newly diagnosed intrinsic pontine gliomas. METHODS AND MATERIALS Patients with newly diagnosed intrinsic pontine glioma were treated with MGd daily for 5 consecutive days each week, for a total of 30 doses. Patients received a 5- to 10-min intravenous bolus of MGd, 4.4 mg/kg/day, given 2 to 5 h prior to standard dose irradiation. Radiation therapy was administered at a daily dose of 1.8 Gy for 30 treatments over 6 weeks. The total dose was 54 Gy. RESULTS Sixty eligible children received MGd daily, concurrent with 6 weeks of radiation therapy. The estimated 1-year EFS was 18%±5%, and the estimated 1-year OS was 53%±6.5%. The most common grade 3 to 4 toxicities were lymphopenia, transient elevation of liver transaminases, and hypertension. CONCLUSIONS Compared to historical controls, the addition of MGd to a standard 6-week course of radiation did not improve the survival of pediatric patients with newly diagnosed intrinsic pontine gliomas.
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Affiliation(s)
- Kristin A Bradley
- Department of Human Oncology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin 53792, USA.
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Wei L, Hong S, Yoon Y, Hwang SN, Park JC, Zhang Z, Olson JJ, Hu XP, Shim H. Early prediction of response to Vorinostat in an orthotopic rat glioma model. NMR IN BIOMEDICINE 2012; 25:1104-11. [PMID: 22302519 PMCID: PMC3356508 DOI: 10.1002/nbm.2776] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 12/13/2011] [Accepted: 12/13/2011] [Indexed: 05/22/2023]
Abstract
Glioblastoma is the most common primary brain tumor and is uniformly fatal despite aggressive surgical and adjuvant therapy. As survival is short, it is critical to determine the value of therapy early on in treatment. Improved early predictive assessment would allow neuro-oncologists to personalize and adjust or change treatment sooner to maximize the use of efficacious therapy. During carcinogenesis, tumor suppressor genes can be silenced by aberrant histone deacetylation. This epigenetic modification has become an important target for tumor therapy. Suberoylanilide hydroxamic acid (SAHA, Vorinostat, Zolinza) is an orally active, potent inhibitor of histone deacetylase (HDAC) activity. A major shortcoming of the use of HDAC inhibitors in the treatment of patients with brain tumors is the lack of reliable biomarkers to predict and determine response. Histological evaluation may reflect tumor viability following treatment, but is an invasive procedure and impractical for glioblastoma. Another problem is that response to SAHA therapy is associated with tumor redifferentiation and cytostasis rather than tumor size reduction, thus limiting the use of traditional imaging methods. A noninvasive method to assess drug delivery and efficacy is needed. Here, we investigated whether changes in (1)H MRS metabolites could render reliable biomarkers for an early response to SAHA treatment in an orthotopic animal model for glioma. Untreated tumors exhibited significantly elevated alanine and lactate levels and reduced inositol, N-acetylaspartate and creatine levels, typical changes reported in glioblastoma relative to normal brain tissues. The (1)H MRS-detectable metabolites of SAHA-treated tumors were restored to those of normal-like brain tissues. In addition, reduced inositol and N-acetylaspartate were found to be potential biomarkers for mood alteration and depression, which may also be alleviated with SAHA treatment. Our study suggests that (1)H MRS can provide reliable metabolic biomarkers at the earliest stage of SAHA treatment to predict the therapeutic response.
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Affiliation(s)
- Li Wei
- Department of Biomedical Engineering, Emory University, Atlanta, Georgia 30322, USA
| | - Samuel Hong
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, Georgia 30322, USA
| | - Younghyoun Yoon
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, Georgia 30322, USA
| | - Scott N. Hwang
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, Georgia 30322, USA
| | - Jaekeun C. Park
- Department of Biomedical Engineering, Emory University, Atlanta, Georgia 30322, USA
| | - Zhaobin Zhang
- Department of Neurosurgery, Emory University, Atlanta, Georgia 30322, USA
| | - Jeffrey J. Olson
- Department of Neurosurgery, Emory University, Atlanta, Georgia 30322, USA
| | - Xiaoping P. Hu
- Department of Biomedical Engineering, Emory University, Atlanta, Georgia 30322, USA
| | - Hyunsuk Shim
- Department of Radiology and Imaging Sciences, Emory University, Atlanta, Georgia 30322, USA
- Winship Cancer Institute, Emory University, Atlanta, Georgia 30322, USA
- Correspondence to: H. Shim, Department of Radiology and Imaging Sciences, Winship Cancer Institute, Emory University, 1701 Uppergate Drive, C5018, Atlanta, GA 30322, Tel: 404-778-4564, Fax: 404-712-5813,
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Lee EQ, Puduvalli VK, Reid JM, Kuhn JG, Lamborn KR, Cloughesy TF, Chang SM, Drappatz J, Yung WKA, Gilbert MR, Robins HI, Lieberman FS, Lassman AB, McGovern RM, Xu J, Desideri S, Ye X, Ames MM, Espinoza-Delgado I, Prados MD, Wen PY. Phase I study of vorinostat in combination with temozolomide in patients with high-grade gliomas: North American Brain Tumor Consortium Study 04-03. Clin Cancer Res 2012; 18:6032-9. [PMID: 22923449 DOI: 10.1158/1078-0432.ccr-12-1841] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE A phase I, dose-finding study of vorinostat in combination with temozolomide (TMZ) was conducted to determine the maximum tolerated dose (MTD), safety, and pharmacokinetics in patients with high-grade glioma (HGG). EXPERIMENTAL DESIGN This phase I, dose-finding, investigational study was conducted in two parts. Part 1 was a dose-escalation study of vorinostat in combination with TMZ 150 mg/m(2)/day for 5 days every 28 days. Part 2 was a dose-escalation study of vorinostat in combination with TMZ 150 mg/m(2)/day for 5 days of the first cycle and 200 mg/m(2)/day for 5 days of the subsequent 28-day cycles. RESULTS In part 1, the MTD of vorinostat administered on days 1 to 7 and 15 to 21 of every 28-day cycle, in combination with TMZ, was 500 mg daily. Dose-limiting toxicities (DLT) included grade 3 anorexia, grade 3 ALT, and grade 5 hemorrhage in the setting of grade 4 thrombocytopenia. In part 2, the MTD of vorinostat on days 1 to 7 and 15 to 21 of every 28-day cycle, combined with TMZ, was 400 mg daily. No DLTs were encountered, but vorinostat dosing could not be escalated further due to thrombocytopenia. The most common serious adverse events were fatigue, lymphopenia, thrombocytopenia, and thromboembolic events. There were no apparent pharmacokinetic interactions between vorinostat and TMZ. Vorinostat treatment resulted in hyperacetylation of histones H3 and H4 in peripheral mononuclear cells. CONCLUSION Vorinostat in combination with temozolomide is well tolerated in patients with HGG. A phase I/II trial of vorinostat with radiotherapy and concomitant TMZ in newly diagnosed glioblastoma is underway.
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Affiliation(s)
- Eudocia Q Lee
- Center for Neuro-Oncology, Dana Farber/Brigham and Women's Cancer Center, Boston, Massachusetts 02215, USA
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Castro-Castro A, Janke C, Montagnac G, Paul-Gilloteaux P, Chavrier P. ATAT1/MEC-17 acetyltransferase and HDAC6 deacetylase control a balance of acetylation of alpha-tubulin and cortactin and regulate MT1-MMP trafficking and breast tumor cell invasion. Eur J Cell Biol 2012; 91:950-60. [PMID: 22902175 DOI: 10.1016/j.ejcb.2012.07.001] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 07/09/2012] [Accepted: 07/09/2012] [Indexed: 10/28/2022] Open
Abstract
Invasive tumor cells use proteases to degrade and migrate through the stromal environment consisting of a 3D network of extracellular matrix macromolecules. In particular, MT1-MMP, a membrane-anchored metalloproteinase, is critical during cancer cell invasion. MT1-MMP is stored in endosomal compartments and then delivered to invadopodia, the specialized plasma membrane domains of invasive cancer cells endowed with extracellular matrix-degradation capacity. In macrophages, traffic of MT1-MMP vesicles to invadopodia-related podosomes requires microtubules. We previously found that in breast tumor MDA-MB-231 cells an increase of microtubule and cortactin acetylation upon inhibition of HDAC6 correlates with a decrease of matrix degradation and invasion in three-dimensional collagen I gel. Here, we investigated the role of the recently identified α-tubulin N-acetyltransferase 1 ATAT1 in invasive MDA-MB-231 cells. We found that the dynamics and distribution of MT1-MMP-positive endosomes require regulation of acetylation levels. We observed that ATAT1 tubulin acetyltransferase binds and regulates cortactin acetylation levels. In addition, ATAT1 colocalizes with cortactin at the adherent surface of the cells and it is required for 2D migration and invasive migration of MDA-MB-231 cells in collagen matrix. All together, our data indicate that a balance of acetylation and deaceylation by ATAT1/HDAC6 enzymes with opposite activities regulates the migratory and invasive capacities of breast tumor cells.
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Valproic acid downregulates the expression of MGMT and sensitizes temozolomide-resistant glioma cells. J Biomed Biotechnol 2012; 2012:987495. [PMID: 22701311 PMCID: PMC3373250 DOI: 10.1155/2012/987495] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 03/23/2012] [Accepted: 04/12/2012] [Indexed: 01/07/2023] Open
Abstract
Temozolomide (TMZ) has become a key therapeutic agent in patients with malignant gliomas; however, its survival benefit remains unsatisfactory. Valproic acid (VPA) has emerged as an anticancer drug via inhibition of histone deacetylases (HDACs), but the therapeutic advantages of a combination with VPA and TMZ remain poorly understood. The main aim of the present study was to determine whether an antitumor effect could be potentiated by a combination of VPA and TMZ, especially in TMZ-resistant cell lines. A combination of VPA and TMZ had a significantly enhanced antitumor effect in TMZ-resistant malignant glioma cells (T98 and U138). This enhanced antitumor effect correlated with VPA-mediated reduced O6-methylguanine-DNA methyltransferase (MGMT) expression, which plays an important role in cellular resistance to alkylating agents. In vitro, the combination of these drugs enhanced the apoptotic and autophagic cell death, as well as suppressed the migratory activities in TMZ-resistant cell lines. Furthermore, in vivo efficacy experiment showed that treatment of combination of VPA and TMZ significantly inhibited tumor growth compared with the monotherapy groups of mice. These results suggest that the clinical efficacy of TMZ chemotherapy in TMZ-resistant malignant glioma may be improved by combination with VPA.
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Epigenetics in human gliomas. Cancer Lett 2012; 342:185-92. [PMID: 22531315 DOI: 10.1016/j.canlet.2012.04.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 04/03/2012] [Accepted: 04/15/2012] [Indexed: 12/30/2022]
Abstract
Aberrant epigenetic landscapes and their involvement in genesis and progression of tumors, as well as in treatment responses and prognosis, indicate one of the most emerging fields in cancer research. In gliomas, the most common human primary brain tumors, and in particular in glioblastoma, the most malignant and devastating brain tumor entity in adults, the elucidation of distinct patterns of aberrant DNA methylation, histone modification, and miRNA expression and their interrelationship has fundamentally changed our point of view on these highly heterogeneous tumors. In the current review article, we address the basic principles of epigenetic control in gliomas, their current and putative future role in prognostic and predictive models and possible interactions within the epigenetic network. We discuss diagnostic and therapeutic opportunities appearing at horizon of epigenetic research. Moreover, we present current and propose future clinical workflow models for molecular characterization of malignant gliomas.
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Malzkorn B, Wolter M, Riemenschneider MJ, Reifenberger G. Unraveling the glioma epigenome: from molecular mechanisms to novel biomarkers and therapeutic targets. Brain Pathol 2012; 21:619-32. [PMID: 21939466 DOI: 10.1111/j.1750-3639.2011.00536.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Epigenetic regulation of gene expression by DNA methylation and histone modification is frequently altered in human cancers including gliomas, the most common primary brain tumors. In diffuse astrocytic and oligodendroglial gliomas, epigenetic changes often present as aberrant hypermethylation of 5'-cytosine-guanine (CpG)-rich regulatory sequences in a large variety of genes, a phenomenon referred to as glioma CpG island methylator phenotype (G-CIMP). G-CIMP is particularly common but not restricted to gliomas with isocitrate dehydrogenase 1 (IDH1) or 2 (IDH2) mutation. Recent studies provided a mechanistic link between these genetic mutations and the associated widespread epigenetic modifications. Specifically, 2-hydroxyglutarate, the oncometabolite produced by mutant IDH1 and IDH2 proteins, has been shown to function as a competitive inhibitor of various α-ketoglutarate (α-KG)-dependent dioxygenases, including histone demethylases and members of the ten-eleven-translocation (TET) family of 5-methylcytosine (5mC) hydroxylases. In this review article, we briefly address (i) the basic principles of epigenetic control of gene expression; (ii) the most important methods to analyze focal and global epigenetic alterations in cells and tissues; and (iii) the involvement of epigenetic alterations in the molecular pathogenesis of gliomas. Moreover, we discuss the promising roles of epigenetic alterations as molecular diagnostic markers and novel therapeutic targets, and highlight future perspectives toward unraveling the "glioma epigenome."
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Affiliation(s)
- Bastian Malzkorn
- Department of Neuropathology, Heinrich-Heine-University, Düsseldorf, Germany
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50
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Friday BB, Anderson SK, Buckner J, Yu C, Giannini C, Geoffroy F, Schwerkoske J, Mazurczak M, Gross H, Pajon E, Jaeckle K, Galanis E. Phase II trial of vorinostat in combination with bortezomib in recurrent glioblastoma: a north central cancer treatment group study. Neuro Oncol 2011; 14:215-21. [PMID: 22090453 DOI: 10.1093/neuonc/nor198] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Vorinostat, a histone deacetylase (HDAC) inhibitor, has shown evidence of single-agent activity in glioblastoma (GBM), and in preclinical studies, we have demonstrated significant synergistic cytotoxicity between HDAC inhibitors and proteasome inhibitors in GBM cell lines. We therefore conducted a phase II trial to evaluate the efficacy of vorinostat in combination with the proteasome inhibitor bortezomib in patients with recurrent GBM. Vorinostat was administered at a dose of 400 mg daily for 14 days of a 21-day cycle, and bortezomib was administered at a dose of 1.3 mg/m(2) intravenously on days 1, 4, 8, and 11 of the cycle. A total of 37 patients were treated, and treatment was well tolerated: grade 3, 4 nonhematologic toxicity occurred in 30% of patients and consisted mainly of fatigue (14%) and neuropathy (5%); grade 3, 4 hematologic toxicity occurred in 37% of patients and consisted of thrombocytopenia (30%), lymphopenia (4%), and neutropenia (4%). The trial was closed at the predetermined interim analysis, with 0 of 34 patients being progression-free at 6 months. One patient achieved a partial response according to the Macdonald criteria. The median time to progression for all patients was 1.5 months (range, 0.5-5.6 months), and median overall survival (OS) was 3.2 months. Patients who had received prior bevacizumab therapy had a shorter time to progression and OS, compared with those who had not. On the basis of the results of this phase II study, further evaluation of the vorinostat-bortezomib combination in GBM patients in this dose and schedule is not recommended.
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Affiliation(s)
- Bret B Friday
- Essentia Health-Duluth Clinic Cancer Center, Duluth, Minnesota, USA
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