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Chou PJ, Sarwar MS, Wang L, Wu R, Li S, Hudlikar RR, Wang Y, Su X, Kong AN. Metabolomic, DNA Methylomic, and Transcriptomic Profiling of Suberoylanilide Hydroxamic Acid Effects on LPS-Exposed Lung Epithelial Cells. Cancer Prev Res (Phila) 2023; 16:321-332. [PMID: 36867722 PMCID: PMC10238674 DOI: 10.1158/1940-6207.capr-22-0384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/12/2022] [Accepted: 03/01/2023] [Indexed: 03/05/2023]
Abstract
Suberoylanilide hydroxamic acid (SAHA) is a histone deacetylase (HDAC) inhibitor with anticancer effects via epigenetic and non-epigenetic mechanisms. The role of SAHA in metabolic rewiring and epigenomic reprogramming to inhibit pro-tumorigenic cascades in lung cancer remains unknown. In this study, we aimed to investigate the regulation of mitochondrial metabolism, DNA methylome reprogramming, and transcriptomic gene expression by SAHA in lipopolysaccharide (LPS)-induced inflammatory model of lung epithelial BEAS-2B cells. LC/MS was used for metabolomic analysis, while next-generation sequencing was done to study epigenetic changes. The metabolomic study reveals that SAHA treatment significantly regulated methionine, glutathione, and nicotinamide metabolism with alteration of the metabolite levels of methionine, S-adenosylmethionine, S-adenosylhomocysteine, glutathione, nicotinamide, 1-methylnicotinamide, and nicotinamide adenine dinucleotide in BEAS-2B cells. Epigenomic CpG methyl-seq shows SAHA revoked a list of differentially methylated regions in the promoter region of the genes, such as HDAC11, miR4509-1, and miR3191. Transcriptomic RNA sequencing (RNA-seq) reveals SAHA abrogated LPS-induced differentially expressed genes encoding proinflammatory cytokines, including interleukin 1α (IL1α), IL1β, IL2, IL6, IL24, and IL32. Integrative analysis of DNA methylome-RNA transcriptome displays a list of genes, of which CpG methylation correlated with changes in gene expression. qPCR validation of transcriptomic RNA-seq data shows that SAHA treatment significantly reduced the LPS-induced mRNA levels of IL1β, IL6, DNA methyltransferase 1 (DNMT1), and DNMT3A in BEAS-2B cells. Altogether, SAHA treatment alters the mitochondrial metabolism, epigenetic CpG methylation, and transcriptomic gene expression to inhibit LPS-induced inflammatory responses in lung epithelial cells, which may provide novel molecular targets to inhibit the inflammation component of lung carcinogenesis. PREVENTION RELEVANCE Inflammation increases the risk of lung cancer and blocking inflammation could reduce the incidence of lung cancer. Herein, we demonstrate that histone deacetylase inhibitor suberoylanilide hydroxamic acid regulates metabolic rewiring and epigenetic reprogramming to attenuate lipopolysaccharide-driven inflammation in lung epithelial cells.
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Affiliation(s)
- Pochung Jordan Chou
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Md. Shahid Sarwar
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Lujing Wang
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Renyi Wu
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Shanyi Li
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Rasika R Hudlikar
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Yujue Wang
- Metabolomics Shared Resource, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901, USA
- Department of Medicine, Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ 08901, USA
| | - Xiaoyang Su
- Metabolomics Shared Resource, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901, USA
- Department of Medicine, Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ 08901, USA
| | - Ah-Ng Kong
- Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
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Weber JS, Vassallo M, Levinson BA, Laino AS, Pavlick AC, Woods DM. Clinical and immune correlate results from a phase 1b study of the histone deacetylase inhibitor mocetinostat with ipilimumab and nivolumab in unresectable stage III/IV melanoma. Melanoma Res 2022; 32:324-333. [PMID: 35678233 PMCID: PMC9444873 DOI: 10.1097/cmr.0000000000000818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Checkpoint immunotherapies (CPIs) have improved outcomes for metastatic melanoma patients, with objective response rates to combination ipilimumab and nivolumab of ~58%. Preclinical data suggest that histone deacetylase (HDAC) inhibition enhances antitumor immune activity and may augment CPI. In a phase Ib open-label pilot trial (NCT03565406), patients with therapy-naive metastatic melanoma were treated with the class I/IV HDAC inhibitor mocetinostat orally three times a week in combination with nivolumab and ipilimumab every 3 weeks for 12 weeks followed by 12-week maintenance cycles of nivolumab every 2 weeks and mocetinostat at the same dose and schedule as induction. The endpoints of the trial were safety, definition of a recommended phase 2 dose, preliminary assessment of response, and correlative marker determination. Patient PBMC and serum samples collected at baseline and on-treatment were assessed by flow cytometry and Luminex assays for immune correlates. Ten patients were treated: nine with 70-mg and one with 50-mg mocetinostat. In the 70-mg cohort, eight patients had objective responses. The patient in the 50-mg cohort had an early progression of disease. All patients had grade 2 or higher toxicities, and six had grades 3 and 4 toxicities. Patient PBMC showed significant decreases in myeloid-derived suppressor cells and trends towards reduced anti-inflammatory monocyte phenotypes. Patient serum showed significant upregulation of granzyme A and TNF and trends towards increased granzyme B and IFNγ. Collectively, combining CPI and mocetinostat had favorable response rates but with high levels of toxicity. Assessment of immune correlates supports a shift away from immunosuppressive phenotypes towards enhanced immune responses.
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Affiliation(s)
| | | | | | | | - Anna C. Pavlick
- Laura and Isaac Perlmutter Cancer Center at NYU Langone Health
| | - David M. Woods
- Division of Medical Oncology, Department of Medicine, University of Colorado School of Medicine
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Abstract
T-cell prolymphocytic leukemia (T-PLL) is a rare mature T-cell hematologic neoplasm with a very poor prognosis and limited treatment options to date. Single-agent alemtuzumab remains the first line of therapy for the treatment-naive and relapsed/refractory patients. Prospective clinical trials are difficult to conduct given that these patients have a short life expectancy after the initial diagnosis. As a result, researchers are implementing the use of targeted therapies in vitro and ex vivo followed by in vivo trials on a small subset of patients which are reviewed here. Newer approaches in the treatment of T-PLL are developing based on recognizing the cytogenetic phenotype of each patient and targeting the identified defective genes that are usually involved in the cell cycle regulation such as protooncogenes, tumor suppressors, and deoxyribonucleic acid (DNA) repair genes. These could potentially redirect the management in the near future and improve the overall survival (OS) and the progression-free survival (PFS) for these patients.
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Affiliation(s)
| | | | - Amandeep Aujla
- Medical Oncology and Hematology, Hartford Healthcare - Backus Hospital, Norwich, USA
| | | | - Sachin Gupta
- Hospital Medicine, Tower Health Reading Hospital, West Reading, USA
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Chüeh AC, Tse JWT, Dickinson M, Ioannidis P, Jenkins L, Togel L, Tan B, Luk I, Davalos-Salas M, Nightingale R, Thompson MR, Williams BRG, Lessene G, Lee EF, Fairlie WD, Dhillon AS, Mariadason JM. ATF3 Repression of BCL-X L Determines Apoptotic Sensitivity to HDAC Inhibitors across Tumor Types. Clin Cancer Res 2017; 23:5573-5584. [PMID: 28611196 PMCID: PMC5600837 DOI: 10.1158/1078-0432.ccr-17-0466] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 04/27/2017] [Accepted: 06/09/2017] [Indexed: 12/13/2022]
Abstract
Purpose: Histone deacetylase inhibitors (HDACi) are epigenome-targeting small molecules approved for the treatment of cutaneous T-cell lymphoma and multiple myeloma. They have also demonstrated clinical activity in acute myelogenous leukemia, non-small cell lung cancer, and estrogen receptor-positive breast cancer, and trials are underway assessing their activity in combination regimens including immunotherapy. However, there is currently no clear strategy to reliably predict HDACi sensitivity. In colon cancer cells, apoptotic sensitivity to HDACi is associated with transcriptional induction of multiple immediate-early (IE) genes. Here, we examined whether this transcriptional response predicts HDACi sensitivity across tumor type and investigated the mechanism by which it triggers apoptosis.Experimental Design: Fifty cancer cell lines from diverse tumor types were screened to establish the correlation between apoptotic sensitivity, induction of IE genes, and components of the intrinsic apoptotic pathway.Results: We show that sensitivity to HDACi across tumor types is predicted by induction of the IE genes FOS, JUN, and ATF3, but that only ATF3 is required for HDACi-induced apoptosis. We further demonstrate that the proapoptotic function of ATF3 is mediated through direct transcriptional repression of the prosurvival factor BCL-XL (BCL2L1) These findings provided the rationale for dual inhibition of HDAC and BCL-XL, which we show strongly cooperate to overcome inherent resistance to HDACi across diverse tumor cell types.Conclusions: These findings explain the heterogeneous responses of tumor cells to HDACi-induced apoptosis and suggest a framework for predicting response and expanding their therapeutic use in multiple cancer types. Clin Cancer Res; 23(18); 5573-84. ©2017 AACR.
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Affiliation(s)
| | - Janson W T Tse
- Ludwig Institute for Cancer Research, Melbourne, Australia
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- Department of Medicine, University of Melbourne, Parkville, Victoria, Australia
| | | | - Paul Ioannidis
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Laura Jenkins
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Lars Togel
- Ludwig Institute for Cancer Research, Melbourne, Australia
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - BeeShin Tan
- Ludwig Institute for Cancer Research, Melbourne, Australia
| | - Ian Luk
- Ludwig Institute for Cancer Research, Melbourne, Australia
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- Department of Medicine, University of Melbourne, Parkville, Victoria, Australia
| | - Mercedes Davalos-Salas
- Ludwig Institute for Cancer Research, Melbourne, Australia
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Rebecca Nightingale
- Ludwig Institute for Cancer Research, Melbourne, Australia
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - Matthew R Thompson
- Hudson Institute of Medical Research and Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria
| | - Bryan R G Williams
- Hudson Institute of Medical Research and Department of Molecular and Translational Sciences, Monash University, Clayton, Victoria
| | | | - Erinna F Lee
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
- Department of Biochemistry and Genetics, La Trobe University, Bundoora, Victoria, Australia
| | - Walter D Fairlie
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
- Department of Biochemistry and Genetics, La Trobe University, Bundoora, Victoria, Australia
| | - Amardeep S Dhillon
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
| | - John M Mariadason
- Ludwig Institute for Cancer Research, Melbourne, Australia.
- Olivia Newton-John Cancer Research Institute, Heidelberg, Victoria, Australia
- School of Cancer Medicine, La Trobe University, Bundoora, Victoria, Australia
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Leng Y, Wang Z, Tsai LK, Leeds P, Fessler EB, Wang J, Chuang DM. FGF-21, a novel metabolic regulator, has a robust neuroprotective role and is markedly elevated in neurons by mood stabilizers. Mol Psychiatry 2015; 20:215-23. [PMID: 24468826 DOI: 10.1038/mp.2013.192] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 11/19/2013] [Accepted: 12/03/2013] [Indexed: 11/08/2022]
Abstract
Fibroblast growth factor-21 (FGF-21) is a new member of the FGF super-family and an important endogenous regulator of glucose and lipid metabolism. It has been proposed as a therapeutic target for diabetes and obesity. Its function in the central nervous system (CNS) remains unknown. Previous studies from our laboratory demonstrated that aging primary neurons are more vulnerable to glutamate-induced excitotoxicity, and that co-treatment with the mood stabilizers lithium and valproic acid (VPA) induces synergistic neuroprotective effects. This study sought to identify molecule(s) involved in these synergistic effects. We found that FGF-21 mRNA was selectively and markedly elevated by co-treatment with lithium and VPA in primary rat brain neurons. FGF-21 protein levels were also robustly increased in neuronal lysates and culture medium following lithium-VPA co-treatment. Combining glycogen synthase kinase-3 (GSK-3) inhibitors with VPA or histone deacetylase (HDAC) inhibitors with lithium synergistically increased FGF-21 mRNA levels, supporting that synergistic effects of lithium and VPA are mediated via GSK-3 and HDAC inhibition, respectively. Exogenous FGF-21 protein completely protected aging neurons from glutamate challenge. This neuroprotection was associated with enhanced Akt-1 activation and GSK-3 inhibition. Lithium-VPA co-treatment markedly prolonged lithium-induced Akt-1 activation and augmented GSK-3 inhibition. Akt-1 knockdown markedly decreased FGF-21 mRNA levels and reduced the neuroprotection induced by FGF-21 or lithium-VPA co-treatment. In addition, FGF-21 knockdown reduced lithium-VPA co-treatment-induced Akt-1 activation and neuroprotection against excitotoxicity. Together, our novel results suggest that FGF-21 is a key mediator of the effects of these mood stabilizers and a potential new therapeutic target for CNS disorders.
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You C, Zhang H, Sakharkar AJ, Teppen T, Pandey SC. Reversal of deficits in dendritic spines, BDNF and Arc expression in the amygdala during alcohol dependence by HDAC inhibitor treatment. Int J Neuropsychopharmacol 2014; 17:313-22. [PMID: 24103311 DOI: 10.1017/S1461145713001144] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Development of anxiety-like behaviours during ethanol withdrawal has been correlated with increased histone deacetylase (HDAC) activity and decreased brain-derived neurotrophic factor (BDNF) and activity-regulated cytoskeleton-associated protein (Arc) gene expression in the amygdala. Furthermore, HDAC-mediated histone modifications play a role in synaptic plasticity. In this study we used the HDAC inhibitor trichostatin A (TSA) to determine whether HDAC inhibition could prevent ethanol withdrawal-induced deficits in dendritic spine density (DSD), BDNF or Arc expression in the amygdala of rats. It was found that decreased BDNF and Arc expression in the central (CeA) and medial nucleus of amygdala (MeA), observed during withdrawal after chronic ethanol exposure, were normalized following acute TSA treatment. TSA treatment was also able to attenuate anxiety-like behaviours during ethanol withdrawal and correct the observed decrease in DSD in the CeA and MeA of ethanol-withdrawn rats. Taken together, these findings demonstrate that correcting the deficits in histone acetylation through TSA treatment also amends downstream synaptic plasticity-related deficits such as BDNF and Arc expression, and DSD in the CeA and MeA as well as attenuates anxiety-like behaviours in rats during withdrawal after chronic ethanol exposure.
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Jochems J, Boulden J, Lee BG, Blendy JA, Jarpe M, Mazitschek R, Van Duzer JH, Jones S, Berton O. Antidepressant-like properties of novel HDAC6-selective inhibitors with improved brain bioavailability. Neuropsychopharmacology 2014; 39:389-400. [PMID: 23954848 DOI: 10.1038/npp.2013.207] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 07/15/2013] [Accepted: 08/02/2013] [Indexed: 12/13/2022]
Abstract
HDAC inhibitors have been reported to produce antidepressant and pro-cognitive effects in animal models, however, poor brain bioavailability or lack of isoform selectivity of current probes has limited our understanding of their mode of action. We report the characterization of novel pyrimidine hydroxyl amide small molecule inhibitors of HDAC6, brain bioavailable upon systemic administration. We show that two compounds in this family, ACY-738 and ACY-775, inhibit HDAC6 with low nanomolar potency and a selectivity of 60- to 1500-fold over class I HDACs. In contrast to tubastatin A, a reference HDAC6 inhibitor with similar potency and peripheral activity, but more limited brain bioavailability, ACY-738 and ACY-775 induce dramatic increases in α-tubulin acetylation in brain and stimulate mouse exploratory behaviors in novel, but not familiar environments. Interestingly, despite a lack of detectable effect on histone acetylation, we show that ACY-738 and ACY-775 share the antidepressant-like properties of other HDAC inhibitors, such as SAHA and MS-275, in the tail suspension test and social defeat paradigm. These effects of ACY-738 and ACY-775 are directly attributable to the inhibition of HDAC6 expressed centrally, as they are fully abrogated in mice with a neural-specific loss of function of HDAC6. Furthermore, administered in combination, a behaviorally inactive dose of ACY-738 markedly potentiates the anti-immobility activity of a subactive dose of the selective serotonin reuptake inhibitor citalopram. Our results validate new isoform-selective probes for in vivo pharmacological studies of HDAC6 in the CNS and reinforce the viability of this HDAC isoform as a potential target for antidepressant development.
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Wrangle J, Wang W, Koch A, Easwaran H, Mohammad HP, Vendetti F, VanCriekinge W, DeMeyer T, Du Z, Parsana P, Rodgers K, Yen RW, Zahnow CA, Taube JM, Brahmer JR, Tykodi SS, Easton K, Carvajal RD, Jones PA, Laird PW, Weisenberger DJ, Tsai S, Juergens RA, Topalian SL, Rudin CM, Brock MV, Pardoll D, Baylin SB. Alterations of immune response of Non-Small Cell Lung Cancer with Azacytidine. Oncotarget 2013; 4:2067-79. [PMID: 24162015 PMCID: PMC3875770 DOI: 10.18632/oncotarget.1542] [Citation(s) in RCA: 287] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 10/25/2013] [Indexed: 12/14/2022] Open
Abstract
Innovative therapies are needed for advanced Non-Small Cell Lung Cancer (NSCLC). We have undertaken a genomics based, hypothesis driving, approach to query an emerging potential that epigenetic therapy may sensitize to immune checkpoint therapy targeting PD-L1/PD-1 interaction. NSCLC cell lines were treated with the DNA hypomethylating agent azacytidine (AZA - Vidaza) and genes and pathways altered were mapped by genome-wide expression and DNA methylation analyses. AZA-induced pathways were analyzed in The Cancer Genome Atlas (TCGA) project by mapping the derived gene signatures in hundreds of lung adeno (LUAD) and squamous cell carcinoma (LUSC) samples. AZA up-regulates genes and pathways related to both innate and adaptive immunity and genes related to immune evasion in a several NSCLC lines. DNA hypermethylation and low expression of IRF7, an interferon transcription factor, tracks with this signature particularly in LUSC. In concert with these events, AZA up-regulates PD-L1 transcripts and protein, a key ligand-mediator of immune tolerance. Analysis of TCGA samples demonstrates that a significant proportion of primary NSCLC have low expression of AZA-induced immune genes, including PD-L1. We hypothesize that epigenetic therapy combined with blockade of immune checkpoints - in particular the PD-1/PD-L1 pathway - may augment response of NSCLC by shifting the balance between immune activation and immune inhibition, particularly in a subset of NSCLC with low expression of these pathways. Our studies define a biomarker strategy for response in a recently initiated trial to examine the potential of epigenetic therapy to sensitize patients with NSCLC to PD-1 immune checkpoint blockade.
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Affiliation(s)
- John Wrangle
- The Johns Hopkins University, School of Medicine, Oncology Center-Hematology/Medical Oncology, Baltimore, Maryland
| | - Wei Wang
- The Johns Hopkins University, School of Medicine, Human Genetics Graduate Program, Baltimore, Maryland
| | - Alexander Koch
- Departments of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Hariharan Easwaran
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Helai P. Mohammad
- GlaxoSmithKline Pharmaceuticals, Cancer Epigenetics and Oncology, Collegeville, Pennsylvania
| | - Frank Vendetti
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Wim VanCriekinge
- Departments of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Tim DeMeyer
- Departments of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Zhengzong Du
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Princy Parsana
- The Johns Hopkins University, Advanced Academic Bioinformatics, Baltimore, Maryland
| | - Kristen Rodgers
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Ray-Whay Yen
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Cynthia A. Zahnow
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Janis M. Taube
- The Johns Hopkins University, School of Medicine, Dermatology and Oral Pathology, Baltimore, Maryland
| | - Julie R. Brahmer
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Scott S. Tykodi
- University of Washington and Fred Hutchison Cancer Research Center, Seattle Cancer Care Alliance, Seattle, Washington
| | - Keith Easton
- University of Washington and Fred Hutchison Cancer Research Center, Seattle Cancer Care Alliance, Seattle, Washington
| | | | - Peter A. Jones
- USC Epigenome Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Peter W. Laird
- USC Epigenome Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Daniel J. Weisenberger
- USC Epigenome Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Salina Tsai
- The Johns Hopkins University, School of Medicine, Russell H. Morgan Department of Radiology and Radiological Science, Baltimore, Maryland
| | - Rosalyn A. Juergens
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Suzanne L. Topalian
- The Johns Hopkins University, School of Medicine, Surgery, Baltimore, Maryland
| | - Charles M. Rudin
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Malcolm V. Brock
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Drew Pardoll
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
| | - Stephen B. Baylin
- The Johns Hopkins University, School of Medicine, Oncology, Baltimore, Maryland
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Reimer P, Chawla S. Long-term complete remission with belinostat in a patient with chemotherapy refractory peripheral T-cell lymphoma. J Hematol Oncol 2013; 6:69. [PMID: 24020452 PMCID: PMC3846498 DOI: 10.1186/1756-8722-6-69] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 09/09/2013] [Indexed: 11/10/2022] Open
Abstract
Peripheral T/NK-cell lymphomas (PTCL) are rare malignancies with a poor prognosis. Due to the lack of randomised studies, standard therapy has not been established. First-line treatment with anthracycline-based polychemotherapy followed by consolidation with high-dose therapy and autologous stem cell transplant in responding patients has demonstrated good feasibility with low toxicity in prospective studies and is widely used in eligible patients. In relapsed and refractory patients, who are not candidates for transplant approaches, therapeutic options are limited and are usually palliative. Several new agents are currently under investigation to improve the outcome of PTCL in the first line and salvage settings. Belinostat, a histone deacetylase (HDAC) inhibitor, has demonstrated broad antineoplastic activity in preclinical studies, and promising results in advanced relapsed/refractory lymphomas.Here, we report the case of a 73 year old patient with heavily pre-treated refractory PTCL in complete remission with belinostat for 39 months.
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Affiliation(s)
- Peter Reimer
- Klinik für Hämatologie, Internistische Onkologie und Stammzelltransplantation, Evangelisches Krankenhaus Essen-Werden gGmbH, Pattbergstr. 1-3, Essen 45239, Germany
| | - Shanta Chawla
- Spectrum Pharmaceuticals, 157 Technology Drive, Irvine, CA 92618, USA
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Neumann F, Kaddu-Mulindwa D, Widmann T, Preuss KD, Held G, Zwick C, Roemer K, Pfreundschuh M, Kubuschok B. EBV-transformed lymphoblastoid cell lines as vaccines against cancer testis antigen-positive tumors. Cancer Immunol Immunother 2013; 62:1211-22. [PMID: 23619976 PMCID: PMC11028802 DOI: 10.1007/s00262-013-1412-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2012] [Accepted: 02/28/2013] [Indexed: 12/25/2022]
Abstract
EBV-transformed lymphoblastoid cell lines (LCL) are potent antigen-presenting cells. To investigate their potential use as cancer testis antigen (CTA) vaccines, we studied the expression of 12 cancer testis (CT) genes in 20 LCL by RT-PCR. The most frequently expressed CT genes were SSX4 (50 %), followed by GAGE (45 %), SSX1 (40 %), MAGE-A3 and SSX2 (25 %), SCP1, HOM-TES-85, MAGE-C1, and MAGE-C2 (15 %). NY-ESO-1 and MAGE-A4 were found in 1/20 LCL and BORIS was not detected at all. Fifteen of 20 LCL expressed at least one antigen, 9 LCL expressed ≥2 CT genes, and 7 of the 20 LCL expressed ≥4 CT genes. The expression of CT genes did not correlate with the length of in vitro culture, telomerase activity, aneuploidy, or proliferation state. While spontaneous expression of CT genes determined by real-time PCR and Western blot was rather weak in most LCL, treatment with DNA methyltransferase 1 inhibitor alone or in combination with histone deacetylase inhibitors increased CTA expression considerably thus enabling LCL to induce CTA-specific T cell responses. The stability of the CT gene expression over prolonged culture periods makes LCL attractive candidates for CT vaccines both in hematological neoplasias and solid tumors.
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Affiliation(s)
- Frank Neumann
- Department of Internal Medicine I, José Carreras-Center for Immuno- and Gene Therapy, University of Saarland Medical School, 66421, Homburg, Saar, Germany,
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11
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Abstract
Mutation of the p53 gene is the most common genetic alteration in human cancer and contributes to malignant process by enhancing transformed properties of cells and resistance to anticancer therapy. Mutant p53 is often highly expressed in tumor cells at least, in part, due to its increased half-life. However, whether mutant p53 expression is regulated by other mechanisms in tumors is unclear. Here we found that histone deacetylase (HDAC) inhibitors suppress both wild-type and mutant p53 transcription in time- and dose-dependent manners. Consistent with this, the levels of wild-type and mutant p53 proteins are decreased upon treatment with HDAC inhibitors. Importantly, we found that upon knockdown of each class I HDAC, only HDAC8 knockdown leads to decreased expression of wild-type and mutant p53 proteins and transcripts. Conversely, we found that ectopic expression of wild-type, but not mutant HDAC8, leads to increased transcription of p53. Furthermore, we found that knockdown of HDAC8 results in reduced expression of HoxA5 and consequently, attenuated ability of HoxA5 to activate p53 transcription, which can be rescued by ectopic expression of HoxA5. Because of the fact that HDAC8 is required for expression of both wild-type and mutant p53, we found that targeted disruption of HDAC8 expression remarkably triggers proliferative defect in cells with a mutant, but not wild-type, p53. Together, our data uncover a regulatory mechanism of mutant p53 transcription via HDAC8 and suggest that HDAC inhibitors and especially HDAC8-targeting agents might be explored as an adjuvant for tumors carrying a mutant p53.
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Affiliation(s)
- W Yan
- Comparative Oncology Laboratory, University of California at Davis, Davis, CA, USA
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12
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Whittle N, Schmuckermair C, Gunduz Cinar O, Hauschild M, Ferraguti F, Holmes A, Singewald N. Deep brain stimulation, histone deacetylase inhibitors and glutamatergic drugs rescue resistance to fear extinction in a genetic mouse model. Neuropharmacology 2013; 64:414-23. [PMID: 22722028 PMCID: PMC3474950 DOI: 10.1016/j.neuropharm.2012.06.001] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 05/31/2012] [Accepted: 06/06/2012] [Indexed: 12/16/2022]
Abstract
Anxiety disorders are characterized by persistent, excessive fear. Therapeutic interventions that reverse deficits in fear extinction represent a tractable approach to treating these disorders. We previously reported that 129S1/SvImJ (S1) mice show no extinction learning following normal fear conditioning. We now demonstrate that weak fear conditioning does permit fear reduction during massed extinction training in S1 mice, but reveals specific deficiency in extinction memory consolidation/retrieval. Rescue of this impaired extinction consolidation/retrieval was achieved with d-cycloserine (N-methly-d-aspartate partial agonist) or MS-275 (histone deacetylase (HDAC) inhibitor), applied after extinction training. We next examined the ability of different drugs and non-pharmacological manipulations to rescue the extreme fear extinction deficit in S1 following normal fear conditioning with the ultimate aim to produce low fear levels in extinction retrieval tests. Results showed that deep brain stimulation (DBS) by applying high frequency stimulation to the nucleus accumbens (ventral striatum) during extinction training, indeed significantly reduced fear during extinction retrieval compared to sham stimulation controls. Rescue of both impaired extinction acquisition and deficient extinction consolidation/retrieval was achieved with prior extinction training administration of valproic acid (a GABAergic enhancer and HDAC inhibitor) or AMN082 [metabotropic glutamate receptor 7 (mGlu7) agonist], while MS-275 or PEPA (AMPA receptor potentiator) failed to affect extinction acquisition in S1 mice. Collectively, these data identify potential beneficial effects of DBS and various drug treatments, including those with HDAC inhibiting or mGlu7 agonism properties, as adjuncts to overcome treatment resistance in exposure-based therapies. This article is part of a Special Issue entitled 'Cognitive Enhancers'.
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Affiliation(s)
- Nigel Whittle
- Department of Pharmacology and Toxicology, Institute of Pharmacy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, Innrain 80 - 82/III, A-6020 Innsbruck, Austria.
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13
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Fiskus W, Rao R, Balusu R, Ganguly S, Tao J, Sotomayor E, Mudunuru U, Smith JE, Hembruff SL, Atadja P, Marquez VE, Bhalla K. Superior efficacy of a combined epigenetic therapy against human mantle cell lymphoma cells. Clin Cancer Res 2012; 18:6227-38. [PMID: 22932665 PMCID: PMC4113119 DOI: 10.1158/1078-0432.ccr-12-0873] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE A deregulated epigenome contributes to the transformed phenotype of mantle cell lymphoma (MCL). This involves activity of the polycomb repressive complex (PRC) 2, containing three core proteins, EZH2, SUZ12, and EED, in which the SET domain of EZH2 mediates the histone methyltransferase activity. We determined the effects of 3-deazaneplanocin A (DZNep), an S-adenosylhomocysteine hydrolase inhibitor, and/or pan-histone deacetylase inhibitor panobinostat (PS) on cultured and primary MCL cells. EXPERIMENTAL DESIGN Following treatment with DZNep and/or PS, apoptosis and the levels and activity of EZH2 and PRC2 proteins in cultured and primary MCL cells were determined. RESULTS Treatment with DZNep depleted EZH2, SUZ12, and 3MeK27H3 in the cultured human MCL cells. DZNep also increased expression of p21, p27, and FBXO32, whereas it depleted Cyclin D1 and Cyclin E1 levels in MCL cells. In addition, DZNep treatment induced cell-cycle arrest and apoptosis in cultured and primary MCL cells. Furthermore, as compared with treatment with each agent alone, cotreatment with DZNep and PS caused greater depletion of EZH2, SUZ12, 3MeK27H3, and Cyclin D1 levels, whereas it induced greater expression of FBXO32, p16, p21, and p27. Combined treatment with DZNep and PS synergistically induced apoptosis of cultured and primary MCL cells while relatively sparing normal CD34 + cells. Cotreatment with DZNep and PS also caused significantly greater inhibition of tumor growth of JeKo-1 xenografts in NOD/SCID mice. CONCLUSIONS These preclinical in vitro and in vivo findings show that cotreatment with DZNep and PS is an active combined epigenetic therapy worthy of further in vivo testing against MCL.
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Affiliation(s)
| | - Rekha Rao
- University of Kansas Cancer Center, Kansas City, KS
| | | | | | | | | | - Uma Mudunuru
- University of Kansas Cancer Center, Kansas City, KS
| | | | | | - Peter Atadja
- Novartis Institute for Biomedical Research Inc., Cambridge, MA
| | | | - Kapil Bhalla
- University of Kansas Cancer Center, Kansas City, KS
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Taylor P, Fangusaro J, Rajaram V, Goldman S, Helenowski IB, MacDonald T, Hasselblatt M, Riedemann L, Laureano A, Cooper L, Gopalakrishnan V. REST is a novel prognostic factor and therapeutic target for medulloblastoma. Mol Cancer Ther 2012; 11:1713-1723. [PMID: 22848092 PMCID: PMC3763747 DOI: 10.1158/1535-7163.mct-11-0990] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Medulloblastoma is a malignant pediatric brain tumor. Current treatment following patient stratification into standard and high-risk groups using clinical features has improved survival. However, a subset of patients with standard risk features have unanticipated aggressive disease, underscoring the need for a better understanding of tumor biology and the development of novel treatments. Poor differentiation, a hallmark of medulloblastomas is associated with elevated expression levels of the repressor of neuronal differentiation called repressor element 1-silencing transcription factor (REST). Here, we assessed whether elevated REST expression levels had prognostic significance and whether its pharmacologic manipulation would promote neurogenesis and block tumor cell growth. REST levels in patient tumors were measured by immunohistochemistry and stratified into negative, low/moderate- (+/++/+++), and high-REST (+++++) groups. Kaplan-Meier curves revealed that patients with high-REST tumors had worse overall and event-free survival compared with patients with REST-negative or REST-low tumors. Because histone deacetylases (HDAC) are required for REST-dependent repression of neurogenesis, we evaluated a panel of HDAC inhibitors (HDACI) for their effects on growth and differentiation of established and primary REST-positive cell lines. MS-275, trichostatin-A (TSA), valproic acid (VPA), and suberoylanilide hydroxamic acid (SAHA) upregulated expression of the REST-target neuronal differentiation gene, Syn1, suggesting a potential effect of these HDACIs on REST function. Interestingly, VPA and TSA substantially increased histone acetylation at the REST promoter and activated its transcription, whereas SAHA unexpectedly promoted its proteasomal degradation. A REST-dependent decrease in cell growth was also observed following SAHA treatment. Thus, our studies suggest that HDACIs may have therapeutic potential for patients with REST-positive tumors. This warrants further investigation.
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Affiliation(s)
- Pete Taylor
- Department of Pediatrics, University of Texas, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Jason Fangusaro
- Department of Pediatrics, Children’s Memorial Hospital, Northwestern University and the Feinberg School of Medicine, Chicago, IL, USA
| | - Veena Rajaram
- Department of Pathology, Children’s Memorial Hospital, Northwestern University and the Feinberg School of Medicine, Chicago, IL, USA
| | - Stewart Goldman
- Department of Pediatrics, Children’s Memorial Hospital, Northwestern University and the Feinberg School of Medicine, Chicago, IL, USA
| | - Irene B. Helenowski
- Department of Preventive Medicine, Children’s Memorial Hospital, Northwestern University and the Feinberg School of Medicine, Chicago, IL, USA
| | - Tobey MacDonald
- Department of Pediatrics, Winship Cancer Institute. Emory University. Atlanta, GA, USA
| | | | - Lars Riedemann
- Department of Pediatric Hematology and Oncology, University Children’s Hospital, Munster, Germany
| | - Alvaro Laureano
- Department of Pediatrics, University of Texas, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Laurence Cooper
- Department of Pediatrics, University of Texas, M.D. Anderson Cancer Center, Houston, TX, USA
| | - Vidya Gopalakrishnan
- Department of Pediatrics, University of Texas, M.D. Anderson Cancer Center, Houston, TX, USA
- Department of Molecular and Cellular Oncology, University of Texas, M.D. Anderson Cancer Center, Houston, TX, USA
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Shabason JE, Tofilon PJ, Camphausen K. Grand rounds at the National Institutes of Health: HDAC inhibitors as radiation modifiers, from bench to clinic. J Cell Mol Med 2011; 15:2735-44. [PMID: 21362133 PMCID: PMC3112261 DOI: 10.1111/j.1582-4934.2011.01296.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Accepted: 01/27/2011] [Indexed: 01/18/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most common and aggressive malignant brain tumour. Patients afflicted with this disease unfortunately have a very poor prognosis, and fewer than 5% of patients survive for 5 years from the time of diagnosis. Therefore, improved therapies to treat this disease are sorely needed. One such class of drugs that have generated great enthusiasm for the treatment of numerous malignancies, including GBM, is histone deacetylase (HDAC) inhibitors. Pre-clinical data have demonstrated the efficacy of various HDAC inhibitors as anticancer agents, with the greatest effects shown when HDAC inhibitors are used in combination with other therapies. As a result of encouraging pre-clinical data, numerous HDAC inhibitors are under investigation in clinical trials, either as monotherapies or in conjunction with other treatments such as chemotherapy, biologic therapy or radiation therapy. In fact, two actively studied HDAC inhibitors, vorinostat and depsipeptide, were recently approved for the treatment of refractory cutaneous T cell lymphoma. In this review, we first present a patient with GBM, and then discuss the pathogenesis, epidemiology and current treatment options of GBM. Finally, we examine the translation of pre-clinical studies that have demonstrated HDAC inhibitors as potent radiosensitizers in in vitro and in vivo models, to a phase II clinical trial combining the HDAC inhibitor, valproic acid, along with temozolomide and radiation therapy for the treatment of GBM.
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Affiliation(s)
- Jacob E Shabason
- Radiation Oncology Branch, National Cancer Institute, National Institutes of HealthBethesda, MD, USA
- Howard Hughes Medical Institute—National Institutes of Health Research Scholars ProgramBethesda, MD, USA
| | - Philip J Tofilon
- Radiation Oncology Branch, National Cancer Institute, National Institutes of HealthBethesda, MD, USA
| | - Kevin Camphausen
- Radiation Oncology Branch, National Cancer Institute, National Institutes of HealthBethesda, MD, USA
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Abstract
Increasing evidence suggests that epigenetic factors have critical roles in gene regulation in neuropsychiatric disorders and in aging, both of which are typically associated with a wide range of gene expression abnormalities. Here, we have used chromatin immunoprecipitation-qPCR to measure levels of acetylated histone H3 at lysines 9/14 (ac-H3K9K14), two epigenetic marks associated with transcriptionally active chromatin, at the promoter regions of eight schizophrenia-related genes in n=82 postmortem prefrontal cortical samples from normal subjects and those with schizophrenia and bipolar disorder. We find that promoter-associated ac-H3K9K14 levels are correlated with gene expression levels, as measured by real-time qPCR for several genes, including, glutamic acid decarboxylase 1 (GAD1), 5-hydroxytryptamine receptor 2C (HTR2C), translocase of outer mitochondrial membrane 70 homolog A (TOMM70A) and protein phosphatase 1E (PPM1E). Ac-H3K9K14 levels of several of the genes tested were significantly negatively associated with age in normal subjects and those with bipolar disorder, but not in subjects with schizophrenia, whereby low levels of histone acetylation were observed in early age and throughout aging. Consistent with this observation, significant hypoacetylation of H3K9K14 was detected in young subjects with schizophrenia when compared with age-matched controls. Our results demonstrate that gene expression changes associated with psychiatric disease and aging result from epigenetic mechanisms involving histone acetylation. We further find that treatment with a histone deacetylase (HDAC) inhibitor alters the expression of several candidate genes for schizophrenia in mouse brain. These findings may have therapeutic implications for the clinical use of HDAC inhibitors in psychiatric disorders.
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Affiliation(s)
- B Tang
- Department of Molecular Biology, The
Scripps Research Institute, La Jolla, CA,
USA
| | - B Dean
- The Rebecca L. Cooper Research
Laboratories, The Mental Health Research Institute,
Parkville, VIC, Australia,The Department of Psychiatry, The
University of Melbourne, Melbourne, VIC,
Australia
| | - E A Thomas
- Department of Molecular Biology, The
Scripps Research Institute, La Jolla, CA,
USA,Department of Molecular Biology, The Scripps Research
Institute, SP-2030, 3030 Science Park Dr, La
Jolla, CA, 92037, USA.
E-mail:
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Abstract
Histone deacetylases (HDACs) regulate the acetylation of a variety of histone and nonhistone proteins, controlling the transcription and regulation of genes involved in cell cycle control, proliferation, survival, DNA repair and differentiation. Unsurprisingly, HDAC expression is frequently altered in hematologic and solid tumor malignancies. Two HDAC inhibitors (vorinostat and romidepsin) have been approved by the US FDA for the treatment of cutaneous T-cell lymphoma. As single agents, treatment with HDAC inhibitors has demonstrated limited clinical benefit for patients with solid tumors, prompting the investigation of novel treatment combinations with other cancer therapeutics. In this article, the rationales and clinical progress of several combinations with HDAC inhibitors are presented, including DNA-damaging chemotherapeutic agents, radiotherapy, hormonal therapies, DNA methyltransferase inhibitors and various small-molecule inhibitors. The future application of HDAC inhibitors as a treatment for cancer is discussed, examining current hurdles to overcome before realizing the potential of this new approach.
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Affiliation(s)
- K Ted Thurn
- Department of Medicine, Hematology/Oncology Division. University of California, San Francisco, CA, USA
| | - Scott Thomas
- Department of Medicine, Hematology/Oncology Division. University of California, San Francisco, CA, USA
| | - Amy Moore
- Department of Medicine, Hematology/Oncology Division. University of California, San Francisco, CA, USA
| | - Pamela N Munster
- Department of Medicine, Hematology/Oncology Division. University of California, San Francisco, CA, USA
- Author for correspondence: 1600 Divisadero St, Room A722, Box 1770, San Francisco, CA 94115, USA Tel.: +1 415 885 7810 Fax: +1 415 353 7779
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18
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Zhang C, Wang Y, Zhou Z, Zhang J, Tian Z. Sodium butyrate upregulates expression of NKG2D ligand MICA/B in HeLa and HepG2 cell lines and increases their susceptibility to NK lysis. Cancer Immunol Immunother 2009; 58:1275-85. [PMID: 19139882 PMCID: PMC11030655 DOI: 10.1007/s00262-008-0645-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2008] [Accepted: 12/08/2008] [Indexed: 10/21/2022]
Abstract
Natural killer (NK) cells are important effectors in the immune response to tumors. A number of cell-surface inhibitory and activating receptors on NK cells tightly regulate their interaction with target cell ligands. In particular, the strength of an anti-tumor immune response appears to depend critically on surface levels of one activating receptor, NKG2D. Correspondingly, expression of NKG2D ligands on target cells is a requirement for effective tumor immunosurveillance and the elimination of pathogen-infected cells. Sodium butyrate, a potent repressor of histone deacetylase (HDAC), has recently been proposed as a potential agent in cancer treatment based on its ability to modify, in several cancer cell types, the expression of a variety of genes related to cell cycle regulation and apoptosis. Here we report that, in the HeLa and HepG2 tumor cell lines, sodium butyrate upregulated the expression of the MHC class I-related chain molecules A and B (MICA and MICB) at both the mRNA and protein levels, resulting in an enhanced susceptibility of cells in both lines to NK lysis. It also led to an elevated expression of heat shock protein 70 (HSP70) and transcription factor Sp1, and increased the binding of transcription factors Sp1 and heat shock transcription factor 1 (HSF1) to the MICA/B promoter, resulting in increased expression of MICA and MICB. siRNA targeting Sp1 significantly attenuate the enhancement of MICA expression by sodium butyrate. These results suggest that sodium butyrate and other HDAC inhibitors may have therapeutic potential by enhancing the immune response to cancer.
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Affiliation(s)
- Cai Zhang
- Institute of Immunopharmacology and Immunotherapy, School of Pharmaceutical Sciences, Shandong University, 44 Wenhua West Road, Jinan, 250012 China
| | - Yiping Wang
- Institute of Immunopharmacology and Immunotherapy, School of Pharmaceutical Sciences, Shandong University, 44 Wenhua West Road, Jinan, 250012 China
| | - Zhixia Zhou
- Institute of Immunopharmacology and Immunotherapy, School of Pharmaceutical Sciences, Shandong University, 44 Wenhua West Road, Jinan, 250012 China
| | - Jian Zhang
- Institute of Immunopharmacology and Immunotherapy, School of Pharmaceutical Sciences, Shandong University, 44 Wenhua West Road, Jinan, 250012 China
| | - Zhigang Tian
- Institute of Immunopharmacology and Immunotherapy, School of Pharmaceutical Sciences, Shandong University, 44 Wenhua West Road, Jinan, 250012 China
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Richon VM, Sandhoff TW, Rifkind RA, Marks PA. Histone deacetylase inhibitor selectively induces p21WAF1 expression and gene-associated histone acetylation. Proc Natl Acad Sci U S A 2000; 97:10014-9. [PMID: 10954755 PMCID: PMC27656 DOI: 10.1073/pnas.180316197] [Citation(s) in RCA: 856] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Histone deacetylases (HDACs) catalyze the removal of acetyl groups on the amino-terminal lysine residues of core nucleosomal histones. This activity is associated generally with transcriptional repression. We have reported previously that inhibition of HDAC activity by hydroxamic acid-based hybrid polar compounds, such as suberoylanilide hydroxamic acid (SAHA), induces differentiation and/or apoptosis of transformed cells in vitro and inhibits tumor growth in vivo. SAHA is a potentially new therapeutic approach to cancer treatment and is in Phase I clinical trials. In several tumor cell lines examined, HDAC inhibitors alter the expression of less than 1% of expressed genes, including the cell cycle kinase inhibitor p21(WAF1). In T24 bladder carcinoma cells, SAHA induces up to a 9-fold increase in p21(WAF1) mRNA and protein, which is, at least in part, because of an increase in the rate of transcription of the gene. SAHA causes an accumulation of acetylated histones H3 and H4 in total cellular chromatin by 2 h, which is maintained through 24 h of culture. An increase in the accumulation of acetylated H3 and H4 was detected throughout the p21(WAF1) promoter and the structural gene after culture with SAHA. The level of histone acetylation did not change in chromatin associated with the actin and p27 genes, and their mRNA expression was not altered during culture of T24 cells with SAHA. Thus, the present findings indicate that the induction of p21(WAF1) by SAHA is regulated, at least in part, by the degree of acetylation of the gene-associated histones and that this induced increase in acetylation is gene selective.
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Affiliation(s)
- V M Richon
- DeWitt Wallace Research Laboratory, Cell Biology Program, Memorial Sloan-Kettering Cancer Center and Graduate School of Medical Sciences of Cornell Medical School, New York, NY 10021, USA.
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