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Kim SL, Shin M, Jin BC, Seo S, Ha GW, Kim SW. Acquired Tumor Necrosis Factor-Related Apoptosis-Inducing Ligand (TRAIL) Resistance of Human Colorectal Cancer Cells Is Linked to Histone Acetylation and Is Synergistically Ameliorated by Combination with HDAC Inhibitors. Dig Dis Sci 2024:10.1007/s10620-024-08569-5. [PMID: 39090444 DOI: 10.1007/s10620-024-08569-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Accepted: 07/15/2024] [Indexed: 08/04/2024]
Abstract
BACKGROUND Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is an attractive target for the treatment of various malignancies; however, its therapeutic potential is limited because of the frequent occurrence of tumor cell resistance. In this study, we determined whether TRAIL resistance acquired by repeated administration could be overcome by HDAC inhibition in human colorectal cancer cells. METHODS TRAIL-resistant HCT116 human colorectal cancer cells (HCT116-TR) were generated by repeated treatment with 10 and 25 ng/mL TRAIL twice weekly for 28 days. RESULTS The resulting TRAIL-resistant cells were noncross-resistant to other chemotherapeutic agents. The levels of histone acetylation-related proteins, such as ac-histone H4 and HDAC1, were altered in HCT116-TR cells compared with the parental HCT116 cell line. The combined treatment with TRAIL and HDAC inhibitors significantly increased apoptosis in HCT116-TR cells and indicated a synergistic effect. The mechanism by which HDAC inhibition sensitizes HCT116-TR cells to TRAIL is dependent on the intrinsic pathway. In addition, we found that HDAC inhibition enhanced the sensitivity of cells to TRAIL through mitogen-activated protein kinases/CCAAT/enhancer-binding protein homologs of protein-dependent upregulation of death receptor 5. CONCLUSION These results suggest that histone acetylation is responsible for acquired TRAIL resistance after repeated exposure and acquired resistance to TRAIL may be overcome by combination therapies with HDAC inhibitors.
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Affiliation(s)
- Se Lim Kim
- Department of Internal Medicine, Jeonbuk National University Medical School, Research Institute of Clinical Medicine of Jeonbuk National University, 20, Geonji-Ro, Deokjin-Gu, Jeonju, Jeonbuk, 54907, Republic of Korea
- Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - MinWoo Shin
- Department of Internal Medicine, Jeonbuk National University Medical School, Research Institute of Clinical Medicine of Jeonbuk National University, 20, Geonji-Ro, Deokjin-Gu, Jeonju, Jeonbuk, 54907, Republic of Korea
- Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - Byung Chul Jin
- Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - SeungYoung Seo
- Department of Internal Medicine, Jeonbuk National University Medical School, Research Institute of Clinical Medicine of Jeonbuk National University, 20, Geonji-Ro, Deokjin-Gu, Jeonju, Jeonbuk, 54907, Republic of Korea
- Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
| | - Gi Won Ha
- Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea
- Department of Surgery, Jeonbuk National University Medical School, Research Institute of Clinical Medicine of Jeonbuk National University, 20, Geonji-Ro, Deokjin-Gu, Jeonju, Jeonbuk, 54907, Republic of Korea
| | - Sang Wook Kim
- Department of Internal Medicine, Jeonbuk National University Medical School, Research Institute of Clinical Medicine of Jeonbuk National University, 20, Geonji-Ro, Deokjin-Gu, Jeonju, Jeonbuk, 54907, Republic of Korea.
- Biomedical Research Institute of Jeonbuk National University Hospital, Jeonju, Korea.
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Xu C, Zhao S, Cai L. Epigenetic (De)regulation in Prostate Cancer. Cancer Treat Res 2023; 190:321-360. [PMID: 38113006 DOI: 10.1007/978-3-031-45654-1_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Prostate cancer (PCa) is a heterogeneous disease exhibiting both genetic and epigenetic deregulations. Epigenetic alterations are defined as changes not based on DNA sequence, which include those of DNA methylation, histone modification, and chromatin remodeling. Androgen receptor (AR) is the main driver for PCa and androgen deprivation therapy (ADT) remains a backbone treatment for patients with PCa; however, ADT resistance almost inevitably occurs and advanced diseases develop termed castration-resistant PCa (CRPC), due to both genetic and epigenetic changes. Due to the reversible nature of epigenetic modifications, inhibitors targeting epigenetic factors have become promising anti-cancer agents. In this chapter, we focus on recent studies about the dysregulation of epigenetic regulators crucially involved in the initiation, development, and progression of PCa and discuss the potential use of inhibitors targeting epigenetic modifiers for treatment of advanced PCa.
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Affiliation(s)
- Chenxi Xu
- Department of Pathology, Duke University School of Medicine, Durham, NC, 27710, USA
- Duke Cancer Institute, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Shuai Zhao
- Department of Pathology, Duke University School of Medicine, Durham, NC, 27710, USA
- Duke Cancer Institute, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Ling Cai
- Department of Pathology, Duke University School of Medicine, Durham, NC, 27710, USA.
- Duke Cancer Institute, Duke University School of Medicine, Durham, NC, 27710, USA.
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Pandareesh MD, Kameshwar VH, Byrappa K. Prostate Carcinogenesis: Insights in Relation to Epigenetics and Inflammation. Endocr Metab Immune Disord Drug Targets 2021; 21:253-267. [PMID: 32682386 DOI: 10.2174/1871530320666200719020709] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/17/2020] [Accepted: 04/29/2020] [Indexed: 12/24/2022]
Abstract
Prostate cancer is a multifactorial disease that mainly occurs due to the accumulation of somatic, genetic, and epigenetic changes, resulting in the inactivation of tumor-suppressor genes and activation of oncogenes. Mutations in genes, specifically those that control cell growth and division or the repair of damaged DNA, make the cells grow and divide uncontrollably to form a tumor. The risk of developing prostate cancer depends upon the gene that has undergone the mutation. Identifying such genetic risk factors for prostate cancer poses a challenge for the researchers. Besides genetic mutations, many epigenetic alterations, including DNA methylation, histone modifications (methylation, acetylation, ubiquitylation, sumoylation, and phosphorylation) nucleosomal remodeling, and chromosomal looping, have significantly contributed to the onset of prostate cancer as well as the prognosis, diagnosis, and treatment of prostate cancer. Chronic inflammation also plays a major role in the onset and progression of human cancer, via modifications in the tumor microenvironment by initiating epithelialmesenchymal transition and remodeling the extracellular matrix. In this article, the authors present a brief history of the mechanisms and potential links between the genetic aberrations, epigenetic changes, inflammation, and inflammasomes that are known to contribute to the prognosis of prostate cancer. Furthermore, the authors examine and discuss the clinical potential of prostate carcinogenesis in relation to epigenetics and inflammation for its diagnosis and treatment..
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Affiliation(s)
- Mirazkar D Pandareesh
- Center for Research and Innovation, BGSIT Campus, Adichunchanagiri University, B.G. Nagara, Mandya District, Karnataka 571448, India
| | - Vivek H Kameshwar
- Center for Research and Innovation, BGSIT Campus, Adichunchanagiri University, B.G. Nagara, Mandya District, Karnataka 571448, India
| | - Kullaiah Byrappa
- Center for Research and Innovation, BGSIT Campus, Adichunchanagiri University, B.G. Nagara, Mandya District, Karnataka 571448, India
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Nepali K, Chang TY, Lai MJ, Hsu KC, Yen Y, Lin TE, Lee SB, Liou JP. Purine/purine isoster based scaffolds as new derivatives of benzamide class of HDAC inhibitors. Eur J Med Chem 2020; 196:112291. [PMID: 32325365 DOI: 10.1016/j.ejmech.2020.112291] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 03/17/2020] [Accepted: 03/27/2020] [Indexed: 12/12/2022]
Abstract
This study reports the design, synthesis and evaluation of a series of histone deacetylase (HDAC) inhibitors containing purine/purine isoster as a capping group and an N-(2-aminophenyl)-benzamide unit. In vitro cytotoxicity studies reveal that benzamide 14 suppressed the growth of triple-negative breast cancer cells MDA-MB-231 (IC50 = 1.48 μM), MDA-MB-468 (IC50 = 0.65 μM), and liver cancer cells HepG2 (IC50 = 2.44 μM), better than MS-275 (5) and Chidamide (6). Compared to the well-known HDAC inhibitor SAHA, 14 showed a higher toxicity (IC50 = 0.33 μM) in three leukemic cell lines, K-562, KG-1 and THP-1. Moreover, 14 was found to be equally virulent in the HDAC-sensitive and -resistant gastric cell lines, YCC11 and YCC3/7, respectively, indicating the potential of 14 to overcome HDACi resistance. Furthermore, substantial inhibitory effects more pronounced than MS-275 (5) and Chidamide (6) were displayed by 14 towards HDAC1, 2 and 3 isoforms with IC50 values of 0.108, 0.585 and 0.563 μM respectively. Compound 14 also exhibited a potent antitumor efficacy in human MDA-MB-231 breast cancer xenograft mouse model, providing a potential lead for the development of anticancer agents.
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Affiliation(s)
- Kunal Nepali
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taiwan
| | - Ting-Yu Chang
- Ph.D. Program in Biotechnology Research and Development, College of Pharmacy, Taipei Medical University, Taiwan; Master Program in Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Taiwan; Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Mei-Jung Lai
- Master Program in Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Taiwan
| | - Kai-Cheng Hsu
- Ph.D. Program in Biotechnology Research and Development, College of Pharmacy, Taipei Medical University, Taiwan; TMU Biomedical Commercialization Center, Taipei Medical University, Taiwan; Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Yun Yen
- Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Tony Eight Lin
- Graduate Institute of Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taiwan
| | - Sung-Bau Lee
- Ph.D. Program in Biotechnology Research and Development, College of Pharmacy, Taipei Medical University, Taiwan; Master Program in Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Taiwan.
| | - Jing-Ping Liou
- School of Pharmacy, College of Pharmacy, Taipei Medical University, Taiwan; Ph.D. Program in Biotechnology Research and Development, College of Pharmacy, Taipei Medical University, Taiwan; TMU Biomedical Commercialization Center, Taipei Medical University, Taiwan; School of Pharmacy, National Defense Medical Center, Taipei, Taiwan.
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KDM2B, an H3K36-specific demethylase, regulates apoptotic response of GBM cells to TRAIL. Cell Death Dis 2017; 8:e2897. [PMID: 28661478 PMCID: PMC5520939 DOI: 10.1038/cddis.2017.288] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 05/16/2017] [Accepted: 05/23/2017] [Indexed: 12/11/2022]
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) can selectively kill tumor cells. TRAIL resistance in cancers is associated with aberrant expression of the key components of the apoptotic program. However, how these components are regulated at the epigenetic level is not understood. In this study, we investigated novel epigenetic mechanisms regulating TRAIL response in glioblastoma multiforme (GBM) cells by a short-hairpin RNA loss-of-function screen. We interrogated 48 genes in DNA and histone modification pathways and identified KDM2B, an H3K36-specific demethylase, as a novel regulator of TRAIL response. Accordingly, silencing of KDM2B significantly enhanced TRAIL sensitivity, the activation of caspase-8, -3 and -7 and PARP cleavage. KDM2B knockdown also accelerated the apoptosis, as revealed by live-cell imaging experiments. To decipher the downstream molecular pathways regulated by KDM2B, levels of apoptosis-related genes were examined by RNA-sequencing upon KDM2B loss, which revealed derepression of proapoptotic genes Harakiri (HRK), caspase-7 and death receptor 4 (DR4) and repression of antiapoptotic genes. The apoptosis phenotype was partly dependent on HRK upregulation, as HRK knockdown significantly abrogated the sensitization. KDM2B-silenced tumors exhibited slower growth in vivo. Taken together, our findings suggest a novel mechanism, where the key apoptosis components are under epigenetic control of KDM2B in GBM cells.
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Mehndiratta S, Wang RS, Huang HL, Su CJ, Hsu CM, Wu YW, Pan SL, Liou JP. 4-Indolyl-N-hydroxyphenylacrylamides as potent HDAC class I and IIB inhibitors in vitro and in vivo. Eur J Med Chem 2017; 134:13-23. [PMID: 28395150 DOI: 10.1016/j.ejmech.2017.03.079] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 03/28/2017] [Accepted: 03/30/2017] [Indexed: 11/16/2022]
Abstract
A series of 4,5-indolyl-N-hydroxyphenylacrylamides, as HDAC inhibitors, has been synthesized and evaluated in vitro and in vivo. 4-Indolyl compounds 13 and 17 functions as potent inhibitors of HDAC1 (IC50 1.28 nM and 1.34 nM) and HDAC 2 (IC50 0.90 and 0.53 nM). N-Hydroxy-3-{4-[2-(1H-indol-4-yl)-ethylsulfamoyl]-phenyl}-acrylamide (13) inhibited the human cancer cell growth of PC3, A549, MDA-MB-231 and AsPC-1 with a GI50 of 0.14, 0.25, 0.32, and 0.24 μM, respectively. In in vivo evaluations bearing prostate PC3 xenografts nude mice model, compound 13 suppressed tumor growth with a tumor growth inhibition (TGI) of 62.2%. Immunohistochemistry of protein expressions, in PC-3 xenograft model indicated elevated acetyl-histone 3 and prominently inhibited HDAC2 protein expressions. Therefore, compound 13 could be a suitable lead for further investigation and the development of selective HDAC 2 inhibitors as potent anti-cancer compounds.
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Affiliation(s)
- Samir Mehndiratta
- School of Pharmacy, College of Pharmacy, Taipei Medical University (TMU), Taiwan
| | - Ruei-Shian Wang
- PhD Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, TMU, Taiwan; Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taiwan
| | - Han-Li Huang
- PhD Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, TMU, Taiwan
| | - Chih-Jou Su
- PhD Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, TMU, Taiwan
| | - Chia-Ming Hsu
- PhD Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, TMU, Taiwan
| | - Yi-Wen Wu
- PhD Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, TMU, Taiwan
| | - Shiow-Lin Pan
- PhD Program for Cancer Biology and Drug Discovery, College of Medical Science and Technology, TMU, Taiwan; Department of Pharmacology, College of Medicine, Taipei Medical University, Taiwan
| | - Jing-Ping Liou
- School of Pharmacy, College of Pharmacy, Taipei Medical University (TMU), Taiwan.
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7
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Hsu CC, Chang WC, Hsu TI, Liu JJ, Yeh SH, Wang JY, Liou JP, Ko CY, Chang KY, Chuang JY. Suberoylanilide hydroxamic acid represses glioma stem-like cells. J Biomed Sci 2016; 23:81. [PMID: 27863490 PMCID: PMC5116136 DOI: 10.1186/s12929-016-0296-6] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 11/03/2016] [Indexed: 01/07/2023] Open
Abstract
Background Glioma stem-like cells (GSCs) are proposed to be responsible for high resistance in glioblastoma multiforme (GBM) treatment. In order to find new strategies aimed at reducing GSC stemness and improving GBM patient survival, we investigated the effects and mechanism of a histone deacetylases (HDACs) inhibitor, suberoylanilide hydroxamic acid (SAHA), since HDAC activity has been linked to cancer stem-like cell (CSC) abundance and properties. Methods Human GBM cell lines were plated in serum-free suspension cultures allowed for sphere forming and CSC enrichment. Subsequently, upon SAHA treatment, the stemness markers, cell proliferation, and viability of GSCs as well as cellular apoptosis and senescence were examined in order to clarify whether inhibition of GSCs occurs. Results We demonstrated that SAHA attenuated cell proliferation and diminished the expression stemness-related markers (CD133 and Bmi1) in GSCs. Furthermore, at high concentrations (more than 5 μM), SAHA triggered apoptosis of GSCs accompanied by increases in both activation of caspase 8- and caspase 9-mediated pathways. Interestingly, we found that a lower dose of SAHA (1 μM and 2.5 μM) inhibited GSCs via cell cycle arrest and induced premature senescence through p53 up-regulation and p38 activation. Conclusion SAHA induces apoptosis and functions as a potent modulator of senescence via the p38-p53 pathway in GSCs. Our results provide a perspective on targeting GSCs via SAHA treatment, and suggest that SAHA could be used as a potent agent to overcome drug resistance in GBM patients. Electronic supplementary material The online version of this article (doi:10.1186/s12929-016-0296-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Che-Chia Hsu
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, 11031, Taiwan.,Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 11031, Taiwan
| | - Wen-Chang Chang
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, 11031, Taiwan
| | - Tsung-I Hsu
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 11031, Taiwan
| | - Jr-Jiun Liu
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 11031, Taiwan.,National Institute of Cancer Research, National Health Research Institutes, 367 Sheng-Li Road, Tainan, 70456, Taiwan
| | - Shiu-Hwa Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, 35053, Taiwan
| | - Jia-Yi Wang
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, 11031, Taiwan
| | - Jing-Ping Liou
- School of Pharmacy, Taipei Medical University, Taipei, 11031, Taiwan
| | - Chiung-Yuan Ko
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 11031, Taiwan
| | - Kwang-Yu Chang
- National Institute of Cancer Research, National Health Research Institutes, 367 Sheng-Li Road, Tainan, 70456, Taiwan.
| | - Jian-Ying Chuang
- Graduate Institute of Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei, 11031, Taiwan. .,Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taipei, 11031, Taiwan.
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8
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Kgatle MM, Kalla AA, Islam MM, Sathekge M, Moorad R. Prostate Cancer: Epigenetic Alterations, Risk Factors, and Therapy. Prostate Cancer 2016; 2016:5653862. [PMID: 27891254 PMCID: PMC5116340 DOI: 10.1155/2016/5653862] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 10/04/2016] [Indexed: 12/12/2022] Open
Abstract
Prostate cancer (PCa) is the most prevalent urological cancer that affects aging men in South Africa, and mechanisms underlying prostate tumorigenesis remain elusive. Research advancements in the field of PCa and epigenetics have allowed for the identification of specific alterations that occur beyond genetics but are still critically important in the pathogenesis of tumorigenesis. Anomalous epigenetic changes associated with PCa include histone modifications, DNA methylation, and noncoding miRNA. These mechanisms regulate and silence hundreds of target genes including some which are key components of cellular signalling pathways that, when perturbed, promote tumorigenesis. Elucidation of mechanisms underlying epigenetic alterations and the manner in which these mechanisms interact in regulating gene transcription in PCa are an unmet necessity that may lead to novel chemotherapeutic approaches. This will, therefore, aid in developing combination therapies that will target multiple epigenetic pathways, which can be used in conjunction with the current conventional PCa treatment.
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Affiliation(s)
- Mankgopo M. Kgatle
- Division of Hepatology and Liver Research, Department of Medicine, Faculty of Health Sciences, University of Cape Town and Groote Schuur Hospital, Observatory, Western Cape 7925, South Africa
| | - Asgar A. Kalla
- Division of Rheumatology, Department of Medicine, Faculty of Health Sciences, University of Cape Town and Groote Schuur Hospital, Observatory, Western Cape 7925, South Africa
| | - Muhammed M. Islam
- Department of Integrative Biomedical Sciences, Institute of Infectious Disease and Molecular Medicine, Faculty of Health Sciences, University of Cape Town, Observatory, Western Cape 7925, South Africa
| | - Mike Sathekge
- Department of Nuclear Medicine, University of Pretoria and Steve Biko Academic Hospital, Private Bag X169, Pretoria, Gauteng 0001, South Africa
| | - Razia Moorad
- Department of Surgery, Faculty of Health Science, University of Cape Town and Groote Schuur Hospital, Observatory, Western Cape 7925, South Africa
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Graça I, Pereira-Silva E, Henrique R, Packham G, Crabb SJ, Jerónimo C. Epigenetic modulators as therapeutic targets in prostate cancer. Clin Epigenetics 2016; 8:98. [PMID: 27651838 PMCID: PMC5025578 DOI: 10.1186/s13148-016-0264-8] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 09/07/2016] [Indexed: 01/24/2023] Open
Abstract
Prostate cancer is one of the most common non-cutaneous malignancies among men worldwide. Epigenetic aberrations, including changes in DNA methylation patterns and/or histone modifications, are key drivers of prostate carcinogenesis. These epigenetic defects might be due to deregulated function and/or expression of the epigenetic machinery, affecting the expression of several important genes. Remarkably, epigenetic modifications are reversible and numerous compounds that target the epigenetic enzymes and regulatory proteins were reported to be effective in cancer growth control. In fact, some of these drugs are already being tested in clinical trials. This review discusses the most important epigenetic alterations in prostate cancer, highlighting the role of epigenetic modulating compounds in pre-clinical and clinical trials as potential therapeutic agents for prostate cancer management.
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Affiliation(s)
- Inês Graça
- Cancer Biology and Epigenetics Group-Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO-Porto), Research Center-LAB 3, F Bdg, 1st floor, Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal ; School of Allied Health Sciences (ESTSP), Polytechnic of Porto, Porto, Portugal
| | - Eva Pereira-Silva
- Cancer Biology and Epigenetics Group-Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO-Porto), Research Center-LAB 3, F Bdg, 1st floor, Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal
| | - Rui Henrique
- Cancer Biology and Epigenetics Group-Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO-Porto), Research Center-LAB 3, F Bdg, 1st floor, Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal ; Department of Pathology, Portuguese Oncology Institute of Porto (IPO Porto), Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal ; Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar-University of Porto (ICBAS-UP), Porto, Portugal
| | - Graham Packham
- Cancer Research UK Centre, Cancer Sciences, The Somers Cancer Research Building, University of Southampton Faculty of Medicine, Southampton General Hospital, Southampton, S016 6YD UK
| | - Simon J Crabb
- Cancer Research UK Centre, Cancer Sciences, The Somers Cancer Research Building, University of Southampton Faculty of Medicine, Southampton General Hospital, Southampton, S016 6YD UK
| | - Carmen Jerónimo
- Cancer Biology and Epigenetics Group-Research Center (CI-IPOP), Portuguese Oncology Institute of Porto (IPO-Porto), Research Center-LAB 3, F Bdg, 1st floor, Rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal ; Department of Pathology and Molecular Immunology, Institute of Biomedical Sciences Abel Salazar-University of Porto (ICBAS-UP), Porto, Portugal
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10
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Héninger E, Krueger TEG, Lang JM. Augmenting antitumor immune responses with epigenetic modifying agents. Front Immunol 2015; 6:29. [PMID: 25699047 PMCID: PMC4316783 DOI: 10.3389/fimmu.2015.00029] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 01/14/2015] [Indexed: 12/31/2022] Open
Abstract
Epigenetic silencing of immune-related genes is a striking feature of the cancer genome that occurs in the process of tumorigenesis. This phenomena impacts antigen processing and antigen presentation by tumor cells and facilitates evasion of immunosurveillance. Further modulation of the tumor microenvironment by altered expression of immunosuppressive cytokines impairs antigen-presenting cells and cytolytic T-cell function. The potential reversal of immunosuppression by epigenetic modulation is therefore a promising and versatile therapeutic approach to reinstate endogenous immune recognition and tumor lysis. Pre-clinical studies have identified multiple elements of the immune system that can be modulated by epigenetic mechanisms and result in improved antigen presentation, effector T-cell function, and breakdown of suppressor mechanisms. Recent clinical studies are utilizing epigenetic therapies prior to, or in combination with, immune therapies to improve clinical outcomes.
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Affiliation(s)
- Erika Héninger
- University of Wisconsin Carbone Cancer Center , Madison, WI , USA
| | | | - Joshua M Lang
- University of Wisconsin Carbone Cancer Center , Madison, WI , USA ; Department of Medicine, University of Wisconsin , Madison, WI , USA
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Duvic M. Choosing a systemic treatment for advanced stage cutaneous T-cell lymphoma: mycosis fungoides and Sézary syndrome. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2015; 2015:529-544. [PMID: 26637769 DOI: 10.1182/asheducation-2015.1.529] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Madeleine Duvic
- Department of Dermatology, University of Texas MD Anderson Cancer Center, Houston, TX
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12
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Thangavel C, Boopathi E, Ciment S, Liu Y, O'Neill R, Sharma A, McMahon SB, Mellert H, Addya S, Ertel A, Birbe R, Fortina P, Dicker AP, Knudsen KE, Den RB. The retinoblastoma tumor suppressor modulates DNA repair and radioresponsiveness. Clin Cancer Res 2014; 20:5468-5482. [PMID: 25165096 DOI: 10.1158/1078-0432.ccr-14-0326] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
PURPOSE Perturbations in the retinoblastoma pathway are over-represented in advanced prostate cancer; retinoblastoma loss promotes bypass of first-line hormone therapy. Conversely, preliminary studies suggested that retinoblastoma-deficient tumors may become sensitized to a subset of DNA-damaging agents. Here, the molecular and in vivo consequence of retinoblastoma status was analyzed in models of clinical relevance. EXPERIMENTAL DESIGN Experimental work was performed with multiple isogenic prostate cancer cell lines (hormone sensitive: LNCaP and LAPC4 cells and hormone resistant C42, 22Rv1 cells; stable knockdown of retinoblastoma using shRNA). Multiple mechanisms were interrogated including cell cycle, apoptosis, and DNA damage repair. Transcriptome analysis was performed, validated, and mechanisms discerned. Cell survival was measured using clonogenic cell survival assay and in vivo analysis was performed in nude mice with human derived tumor xenografts. RESULTS Loss of retinoblastoma enhanced the radioresponsiveness of both hormone-sensitive and castrate-resistant prostate cancer. Hypersensitivity to ionizing radiation was not mediated by cell cycle or p53. Retinoblastoma loss led to alteration in DNA damage repair and activation of the NF-κB pathway and subsequent cellular apoptosis through PLK3. In vivo xenografts of retinoblastoma-deficient tumors exhibited diminished tumor mass, lower PSA kinetics, and decreased tumor growth after treatment with ionizing radiation (P < 0.05). CONCLUSIONS Loss of retinoblastoma confers increased radiosensitivity in prostate cancer. This hypersensitization was mediated by alterations in apoptotic signaling. Combined, these not only provide insight into the molecular consequence of retinoblastoma loss, but also credential retinoblastoma status as a putative biomarker for predicting response to radiotherapy.
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Affiliation(s)
| | - Ettickan Boopathi
- Department of Surgery, Division of Urology, Glenolden, Pennsylvania, USA
| | - Steve Ciment
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Yi Liu
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Raymond O'Neill
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Ankur Sharma
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Steve B McMahon
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Hestia Mellert
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Biomedical Graduate Studies, University of Pennsylvania, Philadelphia, Pennsylvania, USA.,Department of Molecular, Cellular and Developmental Biology, University of Colorado at Boulder, Colorado, USA
| | - Sankar Addya
- Cancer Genomics, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Adam Ertel
- Cancer Genomics, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Ruth Birbe
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Paolo Fortina
- Cancer Genomics, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Adam P Dicker
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Karen E Knudsen
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Department of Urology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Robert B Den
- Department of Radiation Oncology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Department of Cancer Biology, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.,Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
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13
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Farooqi AA, Hou MF, Chen CC, Wang CL, Chang HW. Androgen receptor and gene network: Micromechanics reassemble the signaling machinery of TMPRSS2-ERG positive prostate cancer cells. Cancer Cell Int 2014; 14:34. [PMID: 24739220 PMCID: PMC4002202 DOI: 10.1186/1475-2867-14-34] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Accepted: 04/08/2014] [Indexed: 12/12/2022] Open
Abstract
Prostate cancer is a gland tumor in the male reproductive system. It is a multifaceted and genomically complex disease. Transmembrane protease, serine 2 and v-ets erythroblastosis virus E26 homolog (TMPRSS2-ERG) gene fusions are the common molecular signature of prostate cancer. Although tremendous advances have been made in unraveling various facets of TMPRSS2-ERG-positive prostate cancer, many research findings must be sequentially collected and re-interpreted. It is important to understand the activation or repression of target genes and proteins in response to various stimuli and the assembly in signal transduction in TMPRSS2-ERG fusion-positive prostate cancer cells. Accordingly, we divide this multi-component review ofprostate cancer cells into several segments: 1) The role of TMPRSS2-ERG fusion in genomic instability and methylated regulation in prostate cancer and normal cells; 2) Signal transduction cascades in TMPRSS2-ERG fusion-positive prostate cancer; 3) Overexpressed genes in TMPRSS2-ERG fusion-positive prostate cancer cells; 4) miRNA mediated regulation of the androgen receptor (AR) and its associated protein network; 5) Quantitative control of ERG in prostate cancer cells; 6) TMPRSS2-ERG encoded protein targeting; In conclusion, we provide a detailed understanding of TMPRSS2-ERG fusion related information in prostate cancer development to provide a rationale for exploring TMPRSS2-ERG fusion-mediated molecular network machinery.
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Affiliation(s)
- Ammad Ahmad Farooqi
- Laboratory for Translational Oncology and Personalized Medicine, Rashid Latif Medical College, 35 Km Ferozepur Road, Lahore, Pakistan
| | - Ming-Feng Hou
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan ; Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan ; Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung, Taiwan
| | - Chien-Chi Chen
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan
| | - Chun-Lin Wang
- Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu, Taiwan
| | - Hsueh-Wei Chang
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan ; Institute of Medical Science and Technology, National Sun Yat-sen University, Kaohsiung, Taiwan ; Translational Research Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan ; Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan
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14
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Jazirehi AR, Kurdistani SK, Economou JS. Histone deacetylase inhibitor sensitizes apoptosis-resistant melanomas to cytotoxic human T lymphocytes through regulation of TRAIL/DR5 pathway. THE JOURNAL OF IMMUNOLOGY 2014; 192:3981-9. [PMID: 24639349 DOI: 10.4049/jimmunol.1302532] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Modern immune therapies (PD-1/PD-L1 and CTLA-4 checkpoints blockade and adoptive cell transfer) have remarkably improved the response rates of metastatic melanoma. These modalities rely on the killing potential of CTL as proximal mediator of antimelanoma responses. Mechanisms of tumor resistance to and the predominant cytotoxic pathway(s) used by melanoma-reactive CTL are important outcome determinants. We hypothesized that downmodulation of death receptors (DRs) in addition to aberrant apoptotic signaling might confer resistance to death signals delivered by CTL. To test these two hypotheses, we used an in vitro model of MART CTL-resistant melanoma sublines. TCR-transgenic and patient-derived CTLs used the TRAIL cytotoxic pathway through DR5. Furthermore, recombinant human TRAIL and drozitumab (anti-DR5 agonistic mAb) were used to explicitly verify the contribution of the DR5/TRAIL pathway in killing melanomas. CTL resistance was due to DR5 downregulation and an inverted ratio of pro- to antiapoptotic molecules, both of which were reversed by the histone deacetylase inhibitor suberoylanilide hydroxanic acid. Apoptosis negative (c-IAP-2 and Bcl-xL) and positive (DR5) regulators were potential incriminators partly regulating CTL sensitivity. These preclinical findings suggest that exposure to this chromatin remodeling drug of immune-resistant melanomas can skew toward an intracellular proapoptotic milieu, increase DR expression, and overcome acquired immune resistance.
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Affiliation(s)
- Ali R Jazirehi
- Department of Surgery, Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095
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15
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Fröhlich LF, Mrakovcic M, Smole C, Lahiri P, Zatloukal K. Epigenetic silencing of apoptosis-inducing gene expression can be efficiently overcome by combined SAHA and TRAIL treatment in uterine sarcoma cells. PLoS One 2014; 9:e91558. [PMID: 24618889 PMCID: PMC3950220 DOI: 10.1371/journal.pone.0091558] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Accepted: 02/13/2014] [Indexed: 12/02/2022] Open
Abstract
The lack of knowledge about molecular pathology of uterine sarcomas with a representation of 3–7% of all malignant uterine tumors prevents the establishment of effective therapy protocols. Here, we explored advanced therapeutic options to the previously discovered antitumorigenic effects of the histone deacetylase (HDAC) inhibitor suberoylanilide hydroxamic acid (SAHA) by combined treatment with the tumor necrosis factor-related apoptosis-inducing ligand (TRAIL/Apo-2L). In addition, we investigated the uterine sarcoma cell lines, MES-SA and ESS-1, regarding the underlying molecular mechanisms of SAHA and TRAIL-induced apoptosis and their resistance towards TRAIL. Compared to single SAHA or TRAIL treatment, the combination of SAHA with TRAIL led to complete cell death of both tumor cell lines after 24 to 48 hours. In contrast to single SAHA treatment, apoptosis occured faster and was more pronounced in ESS-1 cells than in MES-SA cells. Induction of SAHA- and TRAIL-induced apoptosis was accompanied by upregulation of the intrinsic apoptotic pathway via reduction of mitochondrial membrane potential, caspase-3, -6, and -7 activation, and PARP cleavage, but was also found to be partially caspase-independent. Apoptosis resistance was caused by reduced expression of caspase-8 and DR 4/TRAIL-R1 in ESS-1 and MES-SA cells, respectively, due to epigenetic silencing by DNA hypermethylation of gene promoter sequences. Treatment with the demethylating agent 5-Aza-2'-deoxycytidine or gene transfer therefore restored gene expression and increased the sensitivity of both cell lines against TRAIL-induced apoptosis. Our data provide evidence that deregulation of epigenetic silencing by histone acetylation and DNA hypermethylation might play a fundamental role in the origin of uterine sarcomas. Therefore, tumor growth might be efficiently overcome by a cytotoxic combinatorial treatment of HDAC inhibitors with TRAIL.
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Affiliation(s)
- Leopold F. Fröhlich
- Molecular Pathology Laboratory, Medical University of Graz, Graz, Austria
- * E-mail:
| | - Maria Mrakovcic
- Center for Medical Research, Medical University of Graz, Graz, Austria
| | - Claudia Smole
- Molecular Pathology Laboratory, Medical University of Graz, Graz, Austria
| | - Pooja Lahiri
- Molecular Pathology Laboratory, Medical University of Graz, Graz, Austria
| | - Kurt Zatloukal
- Molecular Pathology Laboratory, Medical University of Graz, Graz, Austria
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16
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Marrocco-Tallarigo DL, Centenera MM, Scher HI, Tilley WD, Butler LM. Finding the place of histone deacetylase inhibitors in prostate cancer therapy. Expert Rev Clin Pharmacol 2012; 2:619-30. [PMID: 22112256 DOI: 10.1586/ecp.09.44] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Histone deacetylase inhibitors (HDACIs) are showing promise as therapeutic agents for hematological malignancies and solid tumors. In the case of prostate cancer, HDACIs are effective at inhibiting proliferation and inducing apoptosis in a range of in vitro and in vivo experimental models. Recent studies have revealed that the actions of HDACIs in prostate cancer cells extend beyond regulation of histone acetylation and affect proteins involved in maintaining cellular homeostasis and tumor progression, including the androgen receptor, p21(WAF1) and VEGF. The broad spectrum of HDACI targets has allowed rational design of combinations with other therapeutic agents to target multiple pathways involved in prostate cancer progression, including angiogenesis and androgen signaling. In particular, synergistic inhibition of prostate cancer cell growth has been demonstrated using HDACIs in combination with radio- and chemo-therapy, Apo2L/TRAIL, angiogenesis inhibitors, heat-shock protein 90 inhibitors and androgen receptor antagonists. This review examines the current understanding of the actions of HDACIs in prostate cancer cells, both in a laboratory and a clinical context and discusses the potential utility of combination strategies for the treatment of prostate cancer.
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Affiliation(s)
- Deborah L Marrocco-Tallarigo
- Dame Roma Mitchell Cancer Research Laboratories, School of Medicine, University of Adelaide and Hanson Institute, Adelaide, SA 5000, Australia.
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17
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Sonnemann J, Trommer N, Becker S, Wittig S, Grauel D, Palani CD, Beck JF. Histone deacetylase inhibitor-mediated sensitization to TRAIL-induced apoptosis in childhood malignancies is not associated with upregulation of TRAIL receptor expression, but with potentiated caspase-8 activation. Cancer Biol Ther 2012; 13:417-24. [PMID: 22313685 DOI: 10.4161/cbt.19293] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has great potential for the treatment of cancer because it targets tumor cells while sparing normal cells. Several cancers, however, fail to respond to TRAIL's antineoplastic effects. These resistant tumors require cotreatment with sensitizing agents in order for TRAIL to exert anticancer activity. Histone deacetylase inhibitors (HDACi) have been recognized as potent TRAIL sensitizers. In searching for the determinants of TRAIL responsiveness, HDACi-mediated TRAIL sensitization has been predominantly attributed to TRAIL receptor upregulation. This explanation, however, has been challenged by a few studies. The aim of the present study was to explore the relevance of TRAIL receptor expression for HDACi-mediated TRAIL sensitization in childhood tumors, i.e., in medulloblastoma, Ewing's sarcoma and osteosarcoma. In previous studies, we had shown that TRAIL and HDACi were synergistic in inducing apoptosis in medulloblastoma and Ewing's sarcoma. In the present study, we demonstrate that HDACi cooperated with TRAIL in eliciting cell death in osteosarcoma. However, HDACi treatment did not alter or even reduced cell surface expression of TRAIL receptors in the three childhood tumors. In gaining insight into the apoptotic pathway involved in TRAIL sensitization, HDACi were found to potentiate TRAIL-induced caspase-8 activation. Taken together, our findings suggest that HDACi-mediated TRAIL sensitization is not the result of TRAIL receptor upregulation, but the result of a receptor-proximal event in childhood tumor cells.
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Affiliation(s)
- Jürgen Sonnemann
- Department of Pediatric Hematology and Oncology, Jena University Hospital, Children's Clinic, Jena, Germany.
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18
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Mojic M, Mijatovic S, Maksimovic-Ivanic D, Dinic S, Grdovic N, Miljkovic D, Stosic-Grujicic S, Tumino S, Fagone P, Mangano K, Zocca MB, Al-Abed Y, McCubrey JA, Nicoletti F. Saquinavir-NO-targeted S6 protein mediates sensitivity of androgen-dependent prostate cancer cells to TRAIL. Cell Cycle 2012; 11:1174-82. [PMID: 22370480 DOI: 10.4161/cc.11.6.19611] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
We previously reported that the NO-modified form of HIV protease inhibitor Saquinavir (Saq) is a potent antitumoral agent efficient against numerous tumor cell lines in vitro and in vivo. In acute toxicity studies, doses of Saq-NO equivalent to DL100 of the parental drug were completely nontoxic. Beside direct effect on malignant cell growth, Saq-NO sensitizes certain type of cells to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL)-mediated cell death. In this study, we evaluated the effects of Saq-NO on androgen-dependent prostate cancer LNCaP. Saq-NO inhibited both the growth of LNCaP cells in vitro and in xenograft models. Suppression of tumor growth was accompanied with cell cycle arrest in G 0/G 1 phase and established a persistent inhibition of proliferation. Furthermore, Saq-NO reverted sensitivity of LNCaP cells to TRAIL but not to TNF. Treatment of cells with Saq-NO induced transient upregulation of Akt and ERK1/2. This, however, did not represent the primary mode of action of Saq-NO, as elimination with specific inhibitors did not compromise the chemotherapic efficacy of the drug. However, permanent abrogation of phosphorylation of the S6 protein, which is the downstream target of both signaling pathways, was observed. Diminished S6 phosphorylation was associated with re-established sensitivity to TRAIL and reduction of X-linked inhibitor of apoptosis protein (XIAP). In summary, NO modification of Saq led to a new chemical entity with stronger and more pleiotropic antitumor activity than the parental drug.
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Affiliation(s)
- Marija Mojic
- Department of Immunology; Institute for Biological Research Sinisa Stankovic, Belgrade University, Belgrade, Serbia
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19
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Kaddour-Djebbar I, Choudhary V, Lakshmikanthan V, Shirley R, El Gaish M, Al-Shabrawey M, Al-Husein B, Zhong R, Davis M, Dong Z, Bollag WB, Kumar MV. Diltiazem enhances the apoptotic effects of proteasome inhibitors to induce prostate cancer cell death. J Pharmacol Exp Ther 2012; 341:646-55. [PMID: 22393247 DOI: 10.1124/jpet.111.188151] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Diltiazem is a calcium channel blocker used to treat cardiovascular ailments. In addition, reports suggest that diltiazem induces cell death, which could make it a drug of choice for the treatment of cancer associated with hypertension. The goal of this research was to determine whether diltiazem is capable of inducing apoptosis in prostate cancer cells, either alone or in combination with the proteasome inhibitors, lactacystin and bortezomib (Velcade). Bortezomib is approved for the treatment of multiple myeloma; unfortunately, it has side effects that limit its utility. Presumably these side effects could be decreased by reducing its dose in combination with another drug. We have previously shown that lactacystin induces apoptosis in LNCaP cells; here, we show that this effect was enhanced by diltiazem. Furthermore, in proteasome inhibitor-resistant DU145 cells, diltiazem alone did not induce apoptosis but decreased cytosolic calcium levels and induced mitochondrial fission; likewise, lactacystin did not induce apoptosis but up-regulated the proapoptotic protein Bik. However, increasing concentrations of diltiazem in combination with lactacystin or bortezomib induced apoptosis in a dose-dependent and synergistic manner. The combination of diltiazem and lactacystin also up-regulated the levels of Bik and released Bak from Bcl-xL, indicating the involvement of the Bcl2 family pathway in this apoptosis. In addition, the drug combination up-regulated GRP78, suggesting also the involvement of endoplasmic reticulum stress in the apoptotic response. Thus, our results demonstrate a potential therapeutic advantage of combining a frequently used calcium channel blocker with proteasome inhibitors in the treatment of prostate cancer.
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20
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Kuratnik A, Senapati VE, Verma R, Mellone BG, Vella AT, Giardina C. Acute sensitization of colon cancer cells to inflammatory cytokines by prophase arrest. Biochem Pharmacol 2012; 83:1217-28. [PMID: 22306067 DOI: 10.1016/j.bcp.2012.01.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 01/17/2012] [Accepted: 01/18/2012] [Indexed: 02/08/2023]
Abstract
Understanding how colon cancer cells survive within the inflammatory milieu of a tumor, and developing approaches that increase their sensitivity to inflammatory cytokines, may ultimately lead to novel approaches for colon cancer therapy and prevention. Analysis of a number of chemopreventive and therapeutic agents reveal that HDAC inhibitors are particularly adept at sensitizing colon cancer cells TNF or TRAIL mediated apoptosis. In vivo data are consistent with an interaction between SAHA and TNF in inducing apoptosis, as AOM-induced colon tumors express elevated levels of TNF and are more sensitive to SAHA administration. Cell cycle analysis and time-lapse imaging indicated a close correspondence between SAHA-induced prophase arrest and TNF or TRAIL-induced apoptosis. Prophase arrest induced by the Aurora kinase inhibitor VX680 likewise sensitized cells to TNF and TRAIL, with siRNA analysis pointing to Aurora kinase A (and not Aurora kinase B) as being the relevant target for this sensitization. We propose that agents that promote prophase arrest may help sensitize cancer cells to TNF and other inflammatory cytokines. We also discuss how circumvention of an early mitotic checkpoint may facilitate cancer cell survival in the inflammatory micro-environment of the tumor.
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Affiliation(s)
- Anton Kuratnik
- Department of Molecular and Cell Biology, 91 North Eagleville Road, University of Connecticut, Storrs, CT 06269, United States
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21
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SAHA/TRAIL combination induces detachment and anoikis of MDA-MB231 and MCF-7 breast cancer cells. Biochimie 2011; 94:287-99. [PMID: 21835222 DOI: 10.1016/j.biochi.2011.06.031] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 06/24/2011] [Indexed: 01/07/2023]
Abstract
SAHA, an inhibitor of histone deacetylase activity, has been shown to sensitize tumor cells to apoptosis induced by TRAIL, a member of TNF-family. In this paper we investigated the effect of SAHA/TRAIL combination in two breast cancer cell lines, the ERα-positive MCF-7 and the ERα-negative MDA-MB231. Treatment of MDA-MB231 and MCF-7 cells with SAHA in combination with TRAIL caused detachment of cells followed by anoikis, a form of apoptosis which occurs after cell detachment, while treatment with SAHA or TRAIL alone did not produce these effects. The effects were more evident in MDA-MB231 cells, which were chosen for ascertaining the mechanism of SAHA/TRAIL action. Our results show that SAHA decreased the level of c-FLIP, thus favouring the interaction of TRAIL with the specific death receptors DR4 and DR5 and the consequent activation of caspase-8. These effects increased when the cells were treated with SAHA/TRAIL combination. Because z-IEDT-fmk, an inhibitor of caspase-8, prevented both the cleavage of the focal adhesion-kinase FAK and cell detachment, we suggest that activation of caspase-8 can be responsible for both the decrement of FAK and the consequent cell detachment. In addition, treatment with SAHA/TRAIL combination caused dissipation of ΔΨ(m), activation of caspase-3 and decrement of both phospho-EGFR and phospho-ERK1/2, a kinase which is involved in the phosphorylation of BimEL. Therefore, co-treatment also induced decrement of phospho-BimEL and a concomitant increase in the dephosphorylated form of BimEL, which plays an important role in the induction of anoikis. Our findings suggest the potential application of SAHA in combination with TRAIL in clinical trials for breast cancer.
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Abstract
Prostate cancer is a commonly diagnosed cancer in men and a leading cause of cancer deaths. Whilst the underlying mechanisms leading to prostate cancer are still to be determined, it is evident that both genetic and epigenetic changes contribute to the development and progression of this disease. Epigenetic changes involving DNA hypo- and hypermethylation, altered histone modifications and more recently changes in microRNA expression have been detected at a range of genes associated with prostate cancer. Furthermore, there is evidence that particular epigenetic changes are associated with different stages of the disease. Whilst early detection can lead to effective treatment, and androgen deprivation therapy has a high response rate, many tumours develop towards hormone-refractory prostate cancer, for which there is no successful treatment. Reliable markers for early detection and more effective treatment strategies are, therefore, needed. Consequently, there is a considerable interest in the potential of epigenetic changes as markers or targets for therapy in prostate cancer. Epigenetic modifiers that demethylate DNA and inhibit histone deacetylases have recently been explored to reactivate silenced gene expression in cancer. However, further understanding of the mechanisms and the effects of chromatin modulation in prostate cancer are required. In this review, we examine the current literature on epigenetic changes associated with prostate cancer and discuss the potential use of epigenetic modifiers for treatment of this disease.
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Pratap J, Akech J, Wixted JJ, Szabo G, Hussain S, McGee-Lawrence ME, Li X, Bedard K, Dhillon RJ, van Wijnen AJ, Stein JL, Stein GS, Westendorf JJ, Lian JB. The histone deacetylase inhibitor, vorinostat, reduces tumor growth at the metastatic bone site and associated osteolysis, but promotes normal bone loss. Mol Cancer Ther 2011; 9:3210-20. [PMID: 21159607 DOI: 10.1158/1535-7163.mct-10-0572] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Vorinostat, an oral histone deacetylase inhibitor with antitumor activity, is in clinical trials for hematologic and solid tumors that metastasize and compromise bone structure. Consequently, there is a requirement to establish the effects of vorinostat on tumor growth within bone. Breast (MDA-231) and prostate (PC3) cancer cells were injected into tibias of SCID/NCr mice and the effects of vorinostat on tumor growth and osteolytic disease were assessed by radiography, micro-computed tomography, and histologic and molecular analyses. Vorinostat-treated and control mice without tumors were also examined. Tumor growth in bone was reduced ∼33% by vorinostat with inhibited osteolysis in the first few weeks of the experiment. However, osteolysis became more severe in both the vehicle and vorinostat-treated groups. Vorinostat increased the expression of tumor-derived factors promoting bone resorption, including PTHrP, IL-8, and osteopontin. After 4 weeks of vorinostat therapy, the non-tumor-bearing contralateral femurs and limbs from vorinostat-treated tumor-free SCID mice showed significant bone loss (50% volume density of controls). Thus, our studies indicate that vorinostat effectively inhibits tumor growth in bone, but has a negative systemic effect reducing normal trabecular bone mass. Vorinostat treatment reduces tumor growth in bone and accompanying osteolytic disease as a result of decreased tumor burden in bone. However, vorinostat can promote osteopenia throughout the skeleton independent of tumor cell activity.
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Affiliation(s)
- Jitesh Pratap
- Department of Cell Biology and Cancer Center, University of Massachusetts Medical School, Worcester, Massachusetts 01655, USA
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25
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Yadav S, Singhal J, Singhal SS, Awasthi S. hSET1: a novel approach for colon cancer therapy. Biochem Pharmacol 2009; 77:1635-41. [PMID: 19426701 DOI: 10.1016/j.bcp.2009.02.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Revised: 02/19/2009] [Accepted: 02/23/2009] [Indexed: 11/17/2022]
Abstract
Histone-methyl transferases (HMTs) are key enzymes that post-translationally modify histones, and serve key role in gene expression, epigenetic regulation, and as determinants of survival in malignant cells. Recent studies have shed light on the role of hSET1 which is a key element of highly conserved multi-protein HMT complex that catalyze methylation of histone H3 lysine 4 (H3K4) regulating expression of specific proteins important for the malignant phenotype. To understand the importance of differential expression of H3K4 HMTs in cancer, we specifically down-regulated hSET1 the only H3K4 specific histone-methyl transferase present in yeast as well as in human that is directly involved in gene expression. hSET1 has been shown to be differentially over-expressed in the malignant cells as compared to the normal cells at the RNA as well as protein level. In a wide array of normal and malignant cells it has been demonstrated that phosphorothioate antisense against hSET1 (DN5) caused selective and differential apoptosis in malignant cells only while the normal cells remains unaffected. Down-regulation of hSET1 leads to rapid and complete regression of SW480 colon xenograft in mice model. These findings demonstrate that hSET1 over-expression promotes cell proliferation and cancer cell survival, and may be a novel target for cancer therapy.
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Affiliation(s)
- Sushma Yadav
- Department of Molecular Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
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26
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Tsialogiannis E, Polyzois I, Tang QO, Pavlou G, Tsiridis E, Heliotis M, Tsiridis E. Targeting bone morphogenetic protein antagonists:in vitroandin vivoevidence of their role in bone metabolism. Expert Opin Ther Targets 2008; 13:123-37. [DOI: 10.1517/14728220802637725] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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27
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Schmudde M, Braun A, Pende D, Sonnemann J, Klier U, Beck JF, Moretta L, Bröker BM. Histone deacetylase inhibitors sensitize tumour cells for cytotoxic effects of natural killer cells. Cancer Lett 2008; 272:110-21. [DOI: 10.1016/j.canlet.2008.06.027] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2008] [Revised: 06/25/2008] [Accepted: 06/30/2008] [Indexed: 11/29/2022]
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28
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Combination therapy of established cancer using a histone deacetylase inhibitor and a TRAIL receptor agonist. Proc Natl Acad Sci U S A 2008; 105:11317-22. [PMID: 18685088 DOI: 10.1073/pnas.0801868105] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Histone deacetylase inhibitors (HDACi) and agents such as recombinant tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) and agonistic anti-TRAIL receptor (TRAIL-R) antibodies are anticancer agents that have shown promise in preclinical settings and in early phase clinical trials as monotherapies. Although HDACi and activators of the TRAIL pathway have different molecular targets and mechanisms of action, they share the ability to induce tumor cell-selective apoptosis. The ability of HDACi to induce expression of TRAIL-R death receptors 4 and 5 (DR4/DR5), and induce tumor cell death via the intrinsic apoptotic pathway provides a molecular rationale to combine these agents with activators of the TRAIL pathway that activate the alternative (death receptor) apoptotic pathway. Herein, we demonstrate that the HDACi vorinostat synergizes with the mouse DR5-specific monoclonal antibody MD5-1 to induce rapid and robust tumor cell apoptosis in vitro and in vivo. Importantly, using a preclinical mouse breast cancer model, we show that the combination of vorinostat and MD5-1 is safe and induces regression of established tumors, whereas single agent treatment had little or no effect. Functional analyses revealed that rather than mediating enhanced tumor cell apoptosis via the simultaneous activation of the intrinsic and extrinsic apoptotic pathways, vorinostat augmented MD5-1-induced apoptosis concomitant with down-regulation of the intracellular apoptosis inhibitor cellular-FLIP (c-FLIP). These data demonstrate that combination therapies involving HDACi and activators of the TRAIL pathway can be efficacious for the treatment of cancer in experimental mouse models.
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Heider U, Metzler IV, Kaiser M, Rosche M, Sterz J, Rötzer S, Rademacher J, Jakob C, Fleissner C, Kuckelkorn U, Kloetzel PM, Sezer O. Synergistic interaction of the histone deacetylase inhibitor SAHA with the proteasome inhibitor bortezomib in mantle cell lymphoma. Eur J Haematol 2007; 80:133-42. [DOI: 10.1111/j.1600-0609.2007.00995.x] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Green tea polyphenol EGCG sensitizes human prostate carcinoma LNCaP cells to TRAIL-mediated apoptosis and synergistically inhibits biomarkers associated with angiogenesis and metastasis. Oncogene 2007; 27:2055-63. [PMID: 17998943 DOI: 10.1038/sj.onc.1210840] [Citation(s) in RCA: 164] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL/Apo2L) is a promising candidate for cancer therapy, however, emergence of drug resistance limits its potential use. Here, we report for the first time that epigallocatechin-3-gallate (EGCG), the major polyphenolic constituent of green tea, sensitizes TRAIL-resistant LNCaP cells to TRAIL-mediated apoptosis through modulation of intrinsic and extrinsic apoptotic pathways. When combined with EGCG, Apo2L/TRAIL exhibited enhanced apoptotic activity in LNCaP cells characterized by three major molecular events. First, apoptosis induction was accompanied by the upregulation of poly(ADP-ribose) polymerase cleavage and modulation of pro- and antiapoptotic Bcl2 family of proteins. A synergistic inhibition of inhibitors of apoptosis with concomitant increase in caspase cleavage was observed. Second, pretreatment of cells with EGCG resulted in modulation of death-inducing signaling cascade complex involving DR4/TRAIL R1, Fas-associated death domain and FLICE-inhibitory protein proteins. Last, we observed a synergistic inhibition in the invasion and migration of LNCaP cells. This effect was observed to be mediated through inhibition in the protein expression of vascular endothelial growth factor, uPA and angiopoietin 1 and 2. Further, the activity and protein expression of MMP-2, -3 and -9 and upregulation of TIMP1 in cells treated with a combination of EGCG and TRAIL was observed. These data might have implications for developing new strategies aimed at eliminating prostate cancer cells resistant to TRAIL.
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Huang X, Zhang X, Farahvash B, Olumi AF. Novel targeted pro-apoptotic agents for the treatment of prostate cancer. J Urol 2007; 178:1846-54. [PMID: 17868738 DOI: 10.1016/j.juro.2007.06.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2006] [Indexed: 12/26/2022]
Abstract
PURPOSE We reviewed and highlighted novel targeted apoptotic mediated therapies that can be used to treat prostate cancer. MATERIALS AND METHODS A comprehensive review of the peer reviewed literature in the area of apoptosis was performed with special emphasis on apoptotic mediated pathways with promising novel targeted therapies that can be used for patients with prostate cancer. RESULTS The apoptotic pathway can be classified into 2 separate broad categories, including the extrinsic and the intrinsic pathways. Targeting the extrinsic or intrinsic mediated pathway holds promise for developing novel agents for treating prostate cancer. We discuss apoptosis related molecules and therapies, as categorized by 1) targeting apoptosis pathway for antitumor treatment, 2) targeting apoptosis regulators for antitumor treatment and 3) drugs that potentiate pro-apoptotic agents. CONCLUSIONS Defining the molecules responsible for apoptosis and their intricate molecular interactions will help guide us in developing drugs with less toxicity for appropriately selected patients with prostate cancer and other malignancies. Because neoadjuvant and adjuvant clinical trials are under way using novel pro-apoptotic agents for prostate cancer, it is imperative for urologists to be active members of the clinical research team and become familiar with the molecular pathways, and potential benefits and toxicities associated with these novel agents.
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Affiliation(s)
- Xu Huang
- Department of Urologic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
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Nawrocki ST, Carew JS, Douglas L, Cleveland JL, Humphreys R, Houghton JA. Histone deacetylase inhibitors enhance lexatumumab-induced apoptosis via a p21Cip1-dependent decrease in survivin levels. Cancer Res 2007; 67:6987-94. [PMID: 17638911 DOI: 10.1158/0008-5472.can-07-0812] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) preferentially induces apoptosis in malignant cells by binding to the death receptors TRAIL-R1 (DR4) and TRAIL-R2 (DR5). Several agents that therapeutically exploit this phenomenon are being developed. We investigated the anticancer activity of two novel, highly specific agonistic monoclonal antibodies to TRAIL-R1 (mapatumumab, HGS-ETR1) and TRAIL-R2 (lexatumumab, HGS-ETR2) in colon cancer cell lines. Our analyses revealed that colon cancer cells display significantly higher surface expressions of TRAIL-R2 than TRAIL-R1, and are more sensitive to lexatumumab-induced apoptosis. The proapoptotic effects of lexatumumab in TRAIL-resistant HCT8 and HT29 cells were dramatically augmented by the histone deacetylase inhibitors trichostatin A or suberoylanilide hydroxamic acid. The presence of p21, but not p53, was critical for the synergy between lexatumumab and histone deacetylase inhibitors. The absence of p21 did not interfere with the formation of the death-inducing signaling complex by lexatumumab, suggesting the involvement of other apoptotic and/or cell cycle regulators. Indeed, treatment with suberoylanilide hydroxamic acid greatly reduced the expression of the inhibitor of apoptosis protein survivin and cdc2 activity in HCT116 p21(+/+) cells but not in the HCT116 p21(-/-) cells. Inhibition of cdc2 activity with flavopiridol decreased survivin expression and sensitized the p21-deficient cells to lexatumumab-induced apoptosis. Similarly, small interfering RNA-mediated knockdown of survivin also enhanced lexatumumab-mediated cell death. Therefore, survivin expression plays a key role in lexatumumab resistance, and reducing survivin expression by inhibiting cdc2 activity is a promising strategy to enhance the anticancer activity of lexatumumab.
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Affiliation(s)
- Steffan T Nawrocki
- Division of Molecular Therapeutics, Departments of Oncology and Biochemistry, St. Jude Children's Research Hospital, 322 North Lauderdale, Memphis, TN 38105, USA.
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Duvic M, Vu J. Vorinostat: a new oral histone deacetylase inhibitor approved for cutaneous T-cell lymphoma. Expert Opin Investig Drugs 2007; 16:1111-20. [PMID: 17594194 DOI: 10.1517/13543784.16.7.1111] [Citation(s) in RCA: 258] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Epigenetic regulation of gene transcription by small-molecule inhibitors of histone deacetylases (HDACs) is a novel cancer therapy. Vorinostat (suberoylanilide hydroxamic acid) is the first FDA-approved HDAC inhibitor for the treatment of cutaneous manifestations of cutaneous T-cell lymphoma (CTCL). Vorinostat was active against solid tumors and hematologic malignancies as intravenous and oral preparations in Phase I development. In two Phase II trials, vorinostat 400 mg/day was safe and effective with an overall response rate of 24-30% in refractory advanced patients with CTCL including large cell transformation and Sézary syndrome. The common side effects of vorinostat, which are similar in all studies, include gastrointestinal symptoms, fatigue and thrombocytopenia and the most common serious event was thrombosis.
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MESH Headings
- Administration, Oral
- Animals
- Clinical Trials, Phase I as Topic
- Clinical Trials, Phase II as Topic
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Drug Administration Schedule
- Drugs, Investigational
- Female
- Histone Deacetylase Inhibitors
- Humans
- Hydroxamic Acids/administration & dosage
- Hydroxamic Acids/pharmacology
- Immunohistochemistry
- Lymphoma, T-Cell, Cutaneous/diagnosis
- Lymphoma, T-Cell, Cutaneous/drug therapy
- Lymphoma, T-Cell, Cutaneous/mortality
- Male
- Maximum Tolerated Dose
- Mice
- Mice, Nude
- Neoplasm Staging
- Prognosis
- Risk Assessment
- Survival Analysis
- Treatment Outcome
- Vorinostat
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Affiliation(s)
- Madeleine Duvic
- University of Texas MD Anderson Cancer Center, Department of Dermatology, Houston, TX 77030, USA.
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Braun FK, Fecker LF, Schwarz C, Walden P, Assaf C, Dürkop H, Sterry W, Eberle J. Blockade of death receptor-mediated pathways early in the signaling cascade coincides with distinct apoptosis resistance in cutaneous T-cell lymphoma cells. J Invest Dermatol 2007; 127:2425-37. [PMID: 17495957 DOI: 10.1038/sj.jid.5700868] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Control of apoptosis via death ligands plays a basic role for lymphocyte homeostasis and lymphoma development. In this study, cutaneous T-cell lymphoma (CTCL) cell lines revealed pronounced resistance to death ligands as compared to cell lines of T-cell acute lymphoblastic leukemia (T-ALL). The proapoptotic activity of tumor necrosis factor (TNF)-alpha was blocked, sensitivity to TNF-related apoptosis-inducing ligand was significantly reduced, and 1/4 CTCL cell lines was resistant to CD95 activation. In parallel, there was no activation of effector caspase-3 and initiator caspase-8 in nonresponsive CTCL cells, whereas caspase-10 was cleaved selectively in sensitive CTCL cells. No indication for a responsibility of typical downstream regulators of apoptosis was obtained, but loss of CD95 was found in 1/4, loss of TNF-R1 in 3/4, loss of caspase-10 in 2/4, loss of Bid in 1/4, and overexpression of cellular flice inhibitory protein was found in 4/4 CTCL cell lines. This clearly indicates an inhibition of apoptosis early in the extrinsic cascade, namely at the formation of the death-inducing signaling complex. Parallels with regard to expression of apoptosis regulators were seen in peripheral blood mononuclear cells and biopsies of CTCL patients. This study may indicate defects in apoptosis in CTCL and may help to guide CTCL therapy.
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Affiliation(s)
- Frank K Braun
- Department of Dermatology and Allergy, Skin Cancer Center, Charité-Universitätsmedizin Berlin, Berlin, Germany
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Kaddour-Djebbar I, Lakshmikanthan V, Shirley RB, Ma Y, Lewis RW, Kumar MV. Therapeutic advantage of combining calcium channel blockers and TRAIL in prostate cancer. Mol Cancer Ther 2006; 5:1958-66. [PMID: 16928816 DOI: 10.1158/1535-7163.mct-06-0011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Disruption of intracellular calcium initiates multiple cell-damaging processes, such as apoptosis. In normal cells, the levels of Ca(2+) are low in the mitochondria, whereas in apoptotic cells, Ca(2+) increases. Mitochondria uptake Ca(2+) via an inner membrane channel called the uniporter and extrude it into the cytoplasm through a Na(+)/Ca(2+) exchanger. Overload of Ca(2+) in the mitochondria in CGP-treated cells leads to its damage, thus affecting cellular function and survival. The goal of these experiments was to determine the importance of mitochondrial calcium ([Ca(2+)](m)) in apoptosis of prostate cancer cells. Furthermore, we have examined the advantages of increasing the [Ca(2+)](m) and treating the cells with tumor necrosis factor-related apoptosis-inducing ligand (TRAIL), a potent apoptotic agent. Our results show that, under these treatment conditions, inhibiting the Na(+)/Ca(2+) exchanger using benzothiazepin CGP-37157 (CGP) did not induce apoptosis. However, combination of CGP and TRAIL increased the apoptotic response approximately 25-fold compared with control. Increase in apoptosis followed enhanced levels of [Ca(2+)](m) and was accompanied by pronounced mitochondrial changes characteristic of mitochondria-mediated apoptosis. Experiments with calcium ionophores showed that mere increase in cytosolic and/or mitochondrial Ca(2+) was not sufficient to induce apoptosis. These results have therapeutic implications as inhibitors of Na(+)/Ca(2+) exchanger are being used for treating some neurologic and cardiologic ailments, and TRAIL induces apoptosis preferentially in cancer cells. Furthermore, this system provides an excellent model to investigate the role of [Ca(2+)](m) in apoptosis.
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Affiliation(s)
- Ismail Kaddour-Djebbar
- Research Department, Veterans Affairs Medical Center, One Freedom Way, Augusta, GA 30904, USA
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