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Nylund P, Garrido-Zabala B, Párraga AA, Vasquez L, Pyl PT, Harinck GM, Ma A, Jin J, Öberg F, Kalushkova A, Wiklund HJ. PVT1 interacts with polycomb repressive complex 2 to suppress genomic regions with pro-apoptotic and tumour suppressor functions in multiple myeloma. Haematologica 2024; 109:567-577. [PMID: 37496441 PMCID: PMC10828784 DOI: 10.3324/haematol.2023.282965] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 07/20/2023] [Indexed: 07/28/2023] Open
Abstract
Multiple myeloma is a heterogeneous hematological disease that originates from the bone marrow and is characterized by the monoclonal expansion of malignant plasma cells. Despite novel therapies, multiple myeloma remains clinically challenging. A common feature among patients with poor prognosis is the increased activity of the epigenetic silencer EZH2, which is the catalytic subunit of the PRC2. Interestingly, the recruitment of PRC2 lacks sequence specificity and, to date, the molecular mechanisms that define which genomic locations are destined for PRC2-mediated silencing remain unknown. The presence of a long non-coding RNA (lncRNA)-binding pocket on EZH2 suggests that lncRNA could potentially mediate PRC2 recruitment to specific genomic regions. Here, we coupled RNA immunoprecipitation sequencing, RNA-sequencing and chromatin immunoprecipitation-sequencing analysis of human multiple myeloma primary cells and cell lines to identify potential lncRNA partners to EZH2. We found that the lncRNA plasmacytoma variant translocation 1 (PVT1) directly interacts with EZH2 and is overexpressed in patients with a poor prognosis. Moreover, genes predicted to be targets of PVT1 exhibited H3K27me3 enrichment and were associated with pro-apoptotic and tumor suppressor functions. In fact, PVT1 inhibition independently promotes the expression of the PRC2 target genes ZBTB7C, RNF144A and CCDC136. Altogether, our work suggests that PVT1 is an interacting partner in PRC2-mediated silencing of tumor suppressor and pro-apoptotic genes in multiple myeloma, making it a highly interesting potential therapeutic target.
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Affiliation(s)
- Patrick Nylund
- Science for Life Laboratory, Department of Immunology, Genetic and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala.
| | - Berta Garrido-Zabala
- Science for Life Laboratory, Department of Immunology, Genetic and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala
| | - Alba Atienza Párraga
- Science for Life Laboratory, Department of Immunology, Genetic and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala
| | - Louella Vasquez
- Department of Laboratory Medicine, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Lund University, Lund
| | - Paul Theodor Pyl
- Department of Clinical Sciences, National Bioinformatics Infrastructure Sweden, Science for Life Laboratory Lund University, Lund
| | - George Mickhael Harinck
- Science for Life Laboratory, Department of Immunology, Genetic and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala
| | - Anqi Ma
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Jian Jin
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Fredrik Öberg
- Science for Life Laboratory, Department of Immunology, Genetic and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala
| | - Antonia Kalushkova
- Science for Life Laboratory, Department of Immunology, Genetic and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala
| | - Helena Jernberg Wiklund
- Science for Life Laboratory, Department of Immunology, Genetic and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala.
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Ambrosini G, Cordani M, Zarrabi A, Alcon-Rodriguez S, Sainz RM, Velasco G, Gonzalez-Menendez P, Dando I. Transcending frontiers in prostate cancer: the role of oncometabolites on epigenetic regulation, CSCs, and tumor microenvironment to identify new therapeutic strategies. Cell Commun Signal 2024; 22:36. [PMID: 38216942 PMCID: PMC10790277 DOI: 10.1186/s12964-023-01462-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 12/27/2023] [Indexed: 01/14/2024] Open
Abstract
Prostate cancer, as one of the most prevalent malignancies in males, exhibits an approximate 5-year survival rate of 95% in advanced stages. A myriad of molecular events and mutations, including the accumulation of oncometabolites, underpin the genesis and progression of this cancer type. Despite growing research demonstrating the pivotal role of oncometabolites in supporting various cancers, including prostate cancer, the root causes of their accumulation, especially in the absence of enzymatic mutations, remain elusive. Consequently, identifying a tangible therapeutic target poses a formidable challenge. In this review, we aim to delve deeper into the implications of oncometabolite accumulation in prostate cancer. We center our focus on the consequential epigenetic alterations and impacts on cancer stem cells, with the ultimate goal of outlining novel therapeutic strategies.
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Affiliation(s)
- Giulia Ambrosini
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, 37134, Verona, Italy
| | - Marco Cordani
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Complutense University, 28040, Madrid, Spain.
- Instituto de Investigaciones Sanitarias San Carlos (IdISSC), 28040, Madrid, Spain.
| | - Ali Zarrabi
- Department of Biomedical Engineering, Faculty of Engineering & Natural Sciences, Istinye University, Istanbul, 34396, Turkey
- Department of Research Analytics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600 077, India
| | - Sergio Alcon-Rodriguez
- Departamento de Morfología y Biología Celular, School of Medicine, Julián Claveria 6, 33006, Oviedo, Spain
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), University of Oviedo, 33006, Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias (HUCA), 33011, Oviedo, Spain
| | - Rosa M Sainz
- Departamento de Morfología y Biología Celular, School of Medicine, Julián Claveria 6, 33006, Oviedo, Spain
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), University of Oviedo, 33006, Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias (HUCA), 33011, Oviedo, Spain
| | - Guillermo Velasco
- Department of Biochemistry and Molecular Biology, Faculty of Biology, Complutense University, 28040, Madrid, Spain
- Instituto de Investigaciones Sanitarias San Carlos (IdISSC), 28040, Madrid, Spain
| | - Pedro Gonzalez-Menendez
- Departamento de Morfología y Biología Celular, School of Medicine, Julián Claveria 6, 33006, Oviedo, Spain.
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), University of Oviedo, 33006, Oviedo, Spain.
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Hospital Universitario Central de Asturias (HUCA), 33011, Oviedo, Spain.
| | - Ilaria Dando
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, 37134, Verona, Italy.
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3
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Guo N, Song Y, Zi F, Zheng J, Cheng J. Abnormal expression pattern of lncRNA H19 participates in multiple myeloma bone disease by unbalancing osteogenesis and osteolysis. Int Immunopharmacol 2023; 119:110058. [PMID: 37058751 DOI: 10.1016/j.intimp.2023.110058] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 03/07/2023] [Accepted: 03/16/2023] [Indexed: 04/16/2023]
Abstract
BACKGROUND Accumulating genetic and epigenetic alterations in multiple myeloma (MM) have been demonstrated to be closely associated with osteolytic bone disease, generally characterized as increased osteoclast formation and decreased osteoblast activity. Previously, serum long non-coding RNA (lncRNA) H19 has been proved to be a biomarker for the diagnosis of MM. Whereas, its role in MM-associated bone homeostasis remains largely elusive. METHODS A cohort of 42 MM patients and 40 healthy volunteers were enrolled for evaluating differential expressions of H19 and its downstream effectors. The proliferative capacity of MM cells was monitored by CCK-8 assay. Alkaline phosphatase (ALP) staining and activity detection, either with Alizarin red staining (ARS) were employed to assess osteoblast formation. Osteoblast- or osteoclast-associated gene were detected using qRT-PCR and western blot analysis. Bioinformatics analysis, RNA pull-down, RNA immunoprecipitation (RIP), and chromatin immunoprecipitation (ChIP) were subjected to verify H19/miR-532-3p/E2F7/EZH2 axis, which was accounted for epigenetic suppression of PTEN. The functional role of H19 on MM development through unbalancing osteolysis and osteogenesis was also confirmed in the murine MM model. RESULTS Upregulation of serum H19 was observed in MM patients, suggesting its positive correlation with the poor prognosis of MM patients. Loss of H19 dramatically weakened cell proliferation of MM cells, promoted osteoblastic differentiation, and impaired osteoclast activity. While reinforced H19 exhibited the opposite effects. Akt/mTOR signaling plays an indispensable role in H19-mediated osteoblast formation and osteoclastgenesis. Mechanistically, H19 served as a sponge for miR-532-3p to upregulate E2F7, a transcriptional activator of EZH2, thereby accounting for modulating epigenetic suppression of PTEN. The in vivo experiments further validated that H19 exerted important impacts on tumor growth through breaking the balance between osteogenesis and osteolysis via Akt/mTOR signaling. CONCLUSION Collectively, increased enrichment of H19 in MM cells exhibits an essential role in MM development by disturbing bone homeostasis.
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Affiliation(s)
- Ninghong Guo
- Department of Hematology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China
| | - Yuan Song
- Department of Hematology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China
| | - Fuming Zi
- Department of Hematology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China
| | - Jifu Zheng
- Department of Hematology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China
| | - Jing Cheng
- Department of Hematology, The Second Affiliated Hospital of Nanchang University, Nanchang 330006, Jiangxi Province, PR China.
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4
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Yu X, Wang J, Gong W, Ma A, Shen Y, Zhang C, Liu X, Cai L, Liu J, Wang GG, Jin J. Dissecting and targeting noncanonical functions of EZH2 in multiple myeloma via an EZH2 degrader. Oncogene 2023; 42:994-1009. [PMID: 36747009 PMCID: PMC10040430 DOI: 10.1038/s41388-023-02618-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 01/25/2023] [Accepted: 01/30/2023] [Indexed: 02/08/2023]
Abstract
Multiple myeloma (MM) is the second most common hematological malignancy with poor prognosis. Enhancer of zeste homolog 2 (EZH2) is the enzymatic subunit of polycomb repressive complex 2 (PRC2), which catalyzes trimethylation of histone H3 lysine 27 (H3K27me3) for transcriptional repression. EZH2 have been implicated in numerous hematological malignancies, including MM. However, noncanonical functions of EZH2 in MM tumorigenesis are not well understood. Here, we uncovered a noncanonical function of EZH2 in MM malignancy. In addition to the PRC2-mediated and H3K27me3-dependent canonical function, EZH2 interacts with cMyc and co-localizes with gene activation-related markers, promoting MM tumorigenesis in a PRC2- and H3K27me3-independent manner. Both canonical EZH2-PRC2 and noncanonical EZH2-cMyc complexes can be effectively depleted in MM cells by MS177, an EZH2 degrader we reported previously, leading to profound activation of EZH2-PRC2-associated genes and simultaneous suppression of EZH2-cMyc oncogenic nodes. The MS177-induced degradation of both canonical EZH2-PRC2 and noncanonical EZH2-cMyc complexes also reactivated immune response genes in MM cells. Phenotypically, targeting of EZH2's both canonical and noncanonical functions by MS177 effectively suppressed the proliferation of MM cells both in vitro and in vivo. Collectively, this study uncovers a new noncanonical function of EZH2 in MM tumorigenesis and provides a novel therapeutic strategy, pharmacological degradation of EZH2, for treating EZH2-dependent MM.
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Affiliation(s)
- Xufen Yu
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences, Oncological Sciences and Neuroscience, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
| | - Jun Wang
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
- Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Weida Gong
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Anqi Ma
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences, Oncological Sciences and Neuroscience, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Yudao Shen
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences, Oncological Sciences and Neuroscience, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Chengwei Zhang
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences, Oncological Sciences and Neuroscience, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Xijuan Liu
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Ling Cai
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Jing Liu
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences, Oncological Sciences and Neuroscience, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Gang Greg Wang
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
- Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA.
| | - Jian Jin
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences, Oncological Sciences and Neuroscience, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
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5
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Discovery of cysteine-targeting covalent histone methyltransferase inhibitors. Eur J Med Chem 2023; 246:115028. [PMID: 36528996 DOI: 10.1016/j.ejmech.2022.115028] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 12/02/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022]
Abstract
Post-translational methylation of histone lysine or arginine residues by histone methyltransferases (HMTs) plays crucial roles in gene regulation and diverse physiological processes and is implicated in a plethora of human diseases, especially cancer. Therefore, histone methyltransferases have been increasingly recognized as potential therapeutic targets. Consequently, the discovery and development of histone methyltransferase inhibitors have been pursued with steadily increasing interest over the past decade. However, the disadvantages of limited clinical efficacy, moderate selectivity, and propensity for acquired resistance have hindered the development of HMTs inhibitors. Targeted covalent modification represents a proven strategy for kinase drug development and has gained increasing attention in HMTs drug discovery. In this review, we focus on the discovery, characterization, and biological applications of covalent inhibitors for HMTs with emphasis on advancements in the field. In addition, we identify the challenges and future directions in this fast-growing research area of drug discovery.
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6
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Du Z, Huang L, Dai X, Yang D, Niu L, Miller H, Ruan C, Li H, Hu L, Zhou L, Jian D, Sun J, Shi X, Huang P, Chen Y, Zhao X, Liu C. Progranulin regulates the development and function of NKT2 cells through EZH2 and PLZF. Cell Death Differ 2022; 29:1901-1912. [PMID: 35449211 PMCID: PMC9525702 DOI: 10.1038/s41418-022-00973-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 02/23/2022] [Accepted: 03/01/2022] [Indexed: 11/09/2022] Open
Abstract
T helper 2 (Th2) cytokine production by invariant natural killer T (iNKT) cells is involved in the development of asthma, but the regulation of Th2 cytokines in iNKT cells remains unknown. Although it is known that progranulin (PGRN) induces the production of Th2 cytokines in iNKT cells in vivo, the underlying mechanism is not clear. This study aims to investigate the role of PGRN in iNKT cells. The effects of PGRN on the differentiation of iNKT cells was detected by flow cytometry. Then stimulation of iNKT cells and airway resistance were carried out to evaluate the function of PGRN on iNKT cells. Furthermore, the mechanisms of PGRN in regulating iNKT cells was investigated by RT-PCR, WB, confocal and luciferase reporter assays. The absolute number of iNKT cells decreased in PGRN KO mice despite an increase in the percentage of iNKT cells. Furthermore, analyzing the subsets of iNKT cells, we found that NKT2 cells and their IL-4 production were reduced. Mechanistically, the decrease in NKT2 cells in the PGRN KO mice was caused by increased expression of enhancer of zeste homolog 2 (EZH2), that in turn caused increased degradation and altered nuclear localization of PLZF. Interestingly, PGRN signaling decreased expression of EZH2 and treatment of the PGRN KO mice with the EZH2 specific inhibitor GSK343 rescued the defect in NKT2 differentiation, IL-4 generation, and PLZF expression. Altogether, We have revealed a new pathway (PGRN-EZH2-PLZF), which regulates the Th2 responses of iNKT cells and provides a potentially new target for asthma treatment.
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Affiliation(s)
- Zuochen Du
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
- The Second Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
| | - Lu Huang
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Xin Dai
- Department of Pathogen Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Di Yang
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Linlin Niu
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Heather Miller
- The Laboratory of Intracellular Parasites, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT, USA
| | - Changshun Ruan
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Han Li
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Leling Hu
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Lijia Zhou
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Ding Jian
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Jian Sun
- The Second Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
| | - Xiaoqi Shi
- The Second Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
| | - Pei Huang
- The Second Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
| | - Yan Chen
- The Second Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
| | - Xiaodong Zhao
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China.
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China.
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China.
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.
| | - Chaohong Liu
- Chongqing Key Laboratory of Child Infection and Immunity, Children's Hospital of Chongqing Medical University, Chongqing, China.
- Department of Pediatric Research Institute, Children's Hospital of Chongqing Medical University, Chongqing, China.
- Ministry of Education Key Laboratory of Child Development and Disorder, Children's Hospital of Chongqing Medical University, Chongqing, China.
- International Science and Technology Cooperation base of Child development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.
- Department of Pathogen Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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7
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Jing Z, Liu Q, Xie W, Wei Y, Liu J, Zhang Y, Zuo W, Lu S, Zhu Q, Liu P. NCAPD3 promotes prostate cancer progression by up-regulating EZH2 and MALAT1 through STAT3 and E2F1. Cell Signal 2022; 92:110265. [DOI: 10.1016/j.cellsig.2022.110265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 12/30/2021] [Accepted: 01/20/2022] [Indexed: 11/03/2022]
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8
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Das D, Karthik N, Taneja R. Crosstalk Between Inflammatory Signaling and Methylation in Cancer. Front Cell Dev Biol 2021; 9:756458. [PMID: 34901003 PMCID: PMC8652226 DOI: 10.3389/fcell.2021.756458] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 10/11/2021] [Indexed: 01/08/2023] Open
Abstract
Inflammation is an intricate immune response against infection and tissue damage. While the initial immune response is important for preventing tumorigenesis, chronic inflammation is implicated in cancer pathogenesis. It has been linked to various stages of tumor development including transformation, proliferation, angiogenesis, and metastasis. Immune cells, through the production of inflammatory mediators such as cytokines, chemokines, transforming growth factors, and adhesion molecules contribute to the survival, growth, and progression of the tumor in its microenvironment. The aberrant expression and secretion of pro-inflammatory and growth factors by the tumor cells result in the recruitment of immune cells, thus creating a mutual crosstalk. The reciprocal signaling between the tumor cells and the immune cells creates and maintains a successful tumor niche. Many inflammatory factors are regulated by epigenetic mechanisms including DNA methylation and histone modifications. In particular, DNA and histone methylation are crucial forms of transcriptional regulation and aberrant methylation has been associated with deregulated gene expression in oncogenesis. Such deregulations have been reported in both solid tumors and hematological malignancies. With technological advancements to study genome-wide epigenetic landscapes, it is now possible to identify molecular mechanisms underlying altered inflammatory profiles in cancer. In this review, we discuss the role of DNA and histone methylation in regulation of inflammatory pathways in human cancers and review the merits and challenges of targeting inflammatory mediators as well as epigenetic regulators in cancer.
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Affiliation(s)
- Dipanwita Das
- Department of Physiology, Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Nandini Karthik
- Department of Physiology, Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Reshma Taneja
- Department of Physiology, Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
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9
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Ghamlouch H, Boyle EM, Blaney P, Wang Y, Choi J, Williams L, Bauer M, Auclair D, Bruno B, Walker BA, Davies FE, Morgan GJ. Insights into high-risk multiple myeloma from an analysis of the role of PHF19 in cancer. J Exp Clin Cancer Res 2021; 40:380. [PMID: 34857028 PMCID: PMC8638425 DOI: 10.1186/s13046-021-02185-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 11/13/2021] [Indexed: 02/07/2023] Open
Abstract
Despite improvements in outcome, 15-25% of newly diagnosed multiple myeloma (MM) patients have treatment resistant high-risk (HR) disease with a poor survival. The lack of a genetic basis for HR has focused attention on the role played by epigenetic changes. Aberrant expression and somatic mutations affecting genes involved in the regulation of tri-methylation of the lysine (K) 27 on histone 3 H3 (H3K27me3) are common in cancer. H3K27me3 is catalyzed by EZH2, the catalytic subunit of the Polycomb Repressive Complex 2 (PRC2). The deregulation of H3K27me3 has been shown to be involved in oncogenic transformation and tumor progression in a variety of hematological malignancies including MM. Recently we have shown that aberrant overexpression of the PRC2 subunit PHD Finger Protein 19 (PHF19) is the most significant overall contributor to HR status further focusing attention on the role played by epigenetic change in MM. By modulating both the PRC2/EZH2 catalytic activity and recruitment, PHF19 regulates the expression of key genes involved in cell growth and differentiation. Here we review the expression, regulation and function of PHF19 both in normal and the pathological contexts of solid cancers and MM. We present evidence that strongly implicates PHF19 in the regulation of genes important in cell cycle and the genetic stability of MM cells making it highly relevant to HR MM behavior. A detailed understanding of the normal and pathological functions of PHF19 will allow us to design therapeutic strategies able to target aggressive subsets of MM.
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Affiliation(s)
- Hussein Ghamlouch
- Myeloma Research Program, NYU Langone Medical Center, Perlmutter Cancer Center, 522 1st Avenue, Manhattan, New York City, NY, 10016, USA.
| | - Eileen M Boyle
- Myeloma Research Program, NYU Langone Medical Center, Perlmutter Cancer Center, 522 1st Avenue, Manhattan, New York City, NY, 10016, USA
| | - Patrick Blaney
- Myeloma Research Program, NYU Langone Medical Center, Perlmutter Cancer Center, 522 1st Avenue, Manhattan, New York City, NY, 10016, USA
- Applied Bioinformatics Laboratories (ABL), NYU Langone Medical Center, New York, NY, USA
| | - Yubao Wang
- Myeloma Research Program, NYU Langone Medical Center, Perlmutter Cancer Center, 522 1st Avenue, Manhattan, New York City, NY, 10016, USA
| | - Jinyoung Choi
- Myeloma Research Program, NYU Langone Medical Center, Perlmutter Cancer Center, 522 1st Avenue, Manhattan, New York City, NY, 10016, USA
| | - Louis Williams
- Myeloma Research Program, NYU Langone Medical Center, Perlmutter Cancer Center, 522 1st Avenue, Manhattan, New York City, NY, 10016, USA
| | - Michael Bauer
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Daniel Auclair
- The Multiple Myeloma Research Foundation (MMRF), Norwalk, CT, USA
| | - Benedetto Bruno
- Myeloma Research Program, NYU Langone Medical Center, Perlmutter Cancer Center, 522 1st Avenue, Manhattan, New York City, NY, 10016, USA
| | - Brian A Walker
- Division of Hematology Oncology, Indiana University, Indianapolis, IN, USA
| | - Faith E Davies
- Myeloma Research Program, NYU Langone Medical Center, Perlmutter Cancer Center, 522 1st Avenue, Manhattan, New York City, NY, 10016, USA
| | - Gareth J Morgan
- Myeloma Research Program, NYU Langone Medical Center, Perlmutter Cancer Center, 522 1st Avenue, Manhattan, New York City, NY, 10016, USA.
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Kalushkova A, Nylund P, Párraga AA, Lennartsson A, Jernberg-Wiklund H. One Omics Approach Does Not Rule Them All: The Metabolome and the Epigenome Join Forces in Haematological Malignancies. EPIGENOMES 2021; 5:epigenomes5040022. [PMID: 34968247 PMCID: PMC8715477 DOI: 10.3390/epigenomes5040022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/17/2021] [Accepted: 09/26/2021] [Indexed: 02/01/2023] Open
Abstract
Aberrant DNA methylation, dysregulation of chromatin-modifying enzymes, and microRNAs (miRNAs) play a crucial role in haematological malignancies. These epimutations, with an impact on chromatin accessibility and transcriptional output, are often associated with genomic instability and the emergence of drug resistance, disease progression, and poor survival. In order to exert their functions, epigenetic enzymes utilize cellular metabolites as co-factors and are highly dependent on their availability. By affecting the expression of metabolic enzymes, epigenetic modifiers may aid the generation of metabolite signatures that could be utilized as targets and biomarkers in cancer. This interdependency remains often neglected and poorly represented in studies, despite well-established methods to study the cellular metabolome. This review critically summarizes the current knowledge in the field to provide an integral picture of the interplay between epigenomic alterations and the cellular metabolome in haematological malignancies. Our recent findings defining a distinct metabolic signature upon response to enhancer of zeste homolog 2 (EZH2) inhibition in multiple myeloma (MM) highlight how a shift of preferred metabolic pathways may potentiate novel treatments. The suggested link between the epigenome and the metabolome in haematopoietic tumours holds promise for the use of metabolic signatures as possible biomarkers of response to treatment.
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Affiliation(s)
- Antonia Kalushkova
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185 Uppsala, Sweden; (P.N.); (A.A.P.); (H.J.-W.)
- Correspondence:
| | - Patrick Nylund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185 Uppsala, Sweden; (P.N.); (A.A.P.); (H.J.-W.)
| | - Alba Atienza Párraga
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185 Uppsala, Sweden; (P.N.); (A.A.P.); (H.J.-W.)
| | - Andreas Lennartsson
- Department of Biosciences and Nutrition, NEO, Karolinska Institutet, 14157 Huddinge, Sweden;
| | - Helena Jernberg-Wiklund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, 75185 Uppsala, Sweden; (P.N.); (A.A.P.); (H.J.-W.)
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11
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Schütt J, Nägler T, Schenk T, Brioli A. Investigating the Interplay between Myeloma Cells and Bone Marrow Stromal Cells in the Development of Drug Resistance: Dissecting the Role of Epigenetic Modifications. Cancers (Basel) 2021; 13:cancers13164069. [PMID: 34439223 PMCID: PMC8392438 DOI: 10.3390/cancers13164069] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/04/2021] [Accepted: 08/09/2021] [Indexed: 12/27/2022] Open
Abstract
Simple Summary Despite advances made in the last two decades, multiple myeloma (MM) is still an incurable disease. The genetic complexity of MM and the presence of intra-clonal heterogeneity are major contributors to disease relapse and the development of treatment resistance. Additionally, the bone marrow microenvironment is known to play a pivotal role in MM disease progression. Together with genetic modifications, epigenetic changes have been shown to influence MM development and progression. However, epigenetic treatments for MM are still lacking. This is mainly due to the high rate of adverse events of epigenetic drugs in clinical practice. In this review, we will focus on the role of epigenetic modifications in MM disease progression and the development of drug resistance, as well as their role in shaping the interplay between bone marrow stromal cells and MM cells. The current and future treatment strategies involving epigenetic drugs will also be addressed. Abstract Multiple Myeloma (MM) is a malignancy of plasma cells infiltrating the bone marrow (BM). Many studies have demonstrated the crucial involvement of bone marrow stromal cells in MM progression and drug resistance. Together with the BM microenvironment (BMME), epigenetics also plays a crucial role in MM development. A variety of epigenetic regulators, including histone acetyltransferases (HATs), histone methyltransferases (HMTs) and lysine demethylases (KDMs), are altered in MM, contributing to the disease progression and prognosis. In addition to histone modifications, DNA methylation also plays a crucial role. Among others, aberrant epigenetics involves processes associated with the BMME, like bone homeostasis, ECM remodeling or the development of treatment resistance. In this review, we will highlight the importance of the interplay of MM cells with the BMME in the development of treatment resistance. Additionally, we will focus on the epigenetic aberrations in MM and their role in disease evolution, interaction with the BMME, disease progression and development of drug resistance. We will also briefly touch on the epigenetic treatments currently available or currently under investigation to overcome BMME-driven treatment resistance.
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Affiliation(s)
- Jacqueline Schütt
- Clinic of Internal Medicine 2, Hematology and Oncology, Jena University Hospital, 07747 Jena, Germany
- Institute of Molecular Cell Biology, Center for Molecular Biomedicine Jena (CMB), Jena University Hospital, 07747 Jena, Germany
- Clinic of Internal Medicine C, Hematology and Oncology, Stem Cell Transplantation and Palliative Care, Greifswald University Medicine, 17475 Greifswald, Germany
| | - Theresa Nägler
- Clinic of Internal Medicine 2, Hematology and Oncology, Jena University Hospital, 07747 Jena, Germany
| | - Tino Schenk
- Clinic of Internal Medicine 2, Hematology and Oncology, Jena University Hospital, 07747 Jena, Germany
- Institute of Molecular Cell Biology, Center for Molecular Biomedicine Jena (CMB), Jena University Hospital, 07747 Jena, Germany
- Clinic of Internal Medicine C, Hematology and Oncology, Stem Cell Transplantation and Palliative Care, Greifswald University Medicine, 17475 Greifswald, Germany
| | - Annamaria Brioli
- Clinic of Internal Medicine 2, Hematology and Oncology, Jena University Hospital, 07747 Jena, Germany
- Clinic of Internal Medicine C, Hematology and Oncology, Stem Cell Transplantation and Palliative Care, Greifswald University Medicine, 17475 Greifswald, Germany
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12
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Zhao W, Liu M, Zhang M, Wang Y, Zhang Y, Wang S, Zhang N. Effects of Inflammation on the Immune Microenvironment in Gastric Cancer. Front Oncol 2021; 11:690298. [PMID: 34367971 PMCID: PMC8343517 DOI: 10.3389/fonc.2021.690298] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/01/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Chronic inflammation and immune cell dysfunction in the tumor microenvironment are key factors in the development and progression of gastric tumors. However, inflammation-related genes associated with gastric cancer prognosis and their relationship with the expression of immune genes are not fully understood. METHOD In this study, we established an inflammatory response model score called "Riskscore", based on differentially expressed genes in gastric cancer. We used Survival and Survminer packages in R to analyze patient survival and prognosis in risk groups. The survival curve was plotted using the Kaplan-Meier method, and the log-rank test was used to assess statistical significance, and we performed the ROC analysis using the R language package to analyze the 1-, 3-, and 5-year survival of patients in the GEO and TCGA databases. Single-factor and multi-factor prognostic analyses were carried out for age, sex, T, N, M, and risk score. Pathway enrichment analysis indicated immune factor-related pathway enrichment in both patient groups. Next, we screened for important genes that are involved in immune cell regulation. Finally, we created a correlation curve to explore the correlation between Riskscore and the expression of these genes. RESULTS The prognosis was significantly different between high- and low-risk groups, and the survival rate and survival time of the high-risk group were lower than those of the low-risk group. we found that the pathways related to apoptosis, hypoxia, and immunity were most enriched in the risk groups. we found two common tumor-infiltrating immune cell types (i.e., follicular helper T cells and resting dendritic cells) between the two risk groups and identified 10 genes that regulate these cells. Additionally, we found that these 10 genes are positively associated with the two risk groups. CONCLUSION Finally, a risk model of the inflammatory response in gastric cancer was established, and the inflammation-related genes used to construct the model were found to be directly related to immune infiltration. This model can improve the gastric cancer prognosis prediction. Our findings contribute to the development of immunotherapy for the treatment of gastric cancer patients.
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Affiliation(s)
- Weidan Zhao
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
| | - Mingqing Liu
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
| | - Mingyue Zhang
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
| | - Yachen Wang
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
| | - Yingli Zhang
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
| | - Shiji Wang
- Department of Intensive Care Unit, The First Hospital of Jilin University, Changchun, China
| | - Nan Zhang
- Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China
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13
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Quinlan RBA, Brennan PE. Chemogenomics for drug discovery: clinical molecules from open access chemical probes. RSC Chem Biol 2021; 2:759-795. [PMID: 34458810 PMCID: PMC8341094 DOI: 10.1039/d1cb00016k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 03/25/2021] [Indexed: 12/12/2022] Open
Abstract
In recent years chemical probes have proved valuable tools for the validation of disease-modifying targets, facilitating investigation of target function, safety, and translation. Whilst probes and drugs often differ in their properties, there is a belief that chemical probes are useful for translational studies and can accelerate the drug discovery process by providing a starting point for small molecule drugs. This review seeks to describe clinical candidates that have been inspired by, or derived from, chemical probes, and the process behind their development. By focusing primarily on examples of probes developed by the Structural Genomics Consortium, we examine a variety of epigenetic modulators along with other classes of probe.
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Affiliation(s)
- Robert B A Quinlan
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford Old Road Campus Oxford OX3 7FZ UK
| | - Paul E Brennan
- Target Discovery Institute, Nuffield Department of Medicine, University of Oxford Old Road Campus Oxford OX3 7FZ UK
- Alzheimer's Research (UK) Oxford Drug Discovery Institute, Nuffield Department of Medicine, University of Oxford Oxford OX3 7FZ UK
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14
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Al-Ghabkari A, Narendran A. Targeting EZH2-mediated methylation of histone 3 inhibits proliferation of pediatric acute monocytic leukemia cells in vitro. Cancer Biol Ther 2021; 22:333-344. [PMID: 33978549 DOI: 10.1080/15384047.2021.1902913] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Enhancer of zeste homolog 2 (EZH2) is a histone methyltransferase and a catalytic subunit of the polycomb repressive complex 2 (PRC2) that catalyzes the mono-, di-, and tri-methylation of histone H3 at Lys 27 (H3K27me3) to facilitate chromatin-remodeling and gene-silencing functions. Previous reports showed a significant association of EZH2 aberrations in pediatric cancers, such as soft tissue sarcomas and glioblastoma. Recent reports in human subjects and animal models have also suggested a central role of EZH2 in the induction and progression of acute myeloid leukemia. In this study, we aimed to investigate the molecular status of EZH in cell lines derived from distinct pediatric leukemia to assess the efficacy of targeting EZH2 to suppress cancer cell survival and proliferation. Our results showed that EZH2 protein is overexpressed in the pediatric monocytic cell-line THP-1, but not in other leukemia-derived cell lines MV4;11 and SEM. Screening a panel of methyltransferase inhibitors revealed that three inhibitors; GSK126, UNC1999 and EPZ-5687 are the most potent inhibitors that suppressed EZH2 activity selectively on lysine 27 which resulted in increased apoptosis and inhibition of AKT and ERK protein phosphorylation in THP-1 cells. Our data demonstrated a significant increase in apoptosis in cells treated with drug combination (EZH2i and selinexor) compared to EZH2i inhibitors alone. Taken together, our data provide initial evidence that targeting EZH2 is a promising therapeutic strategy for the treatment of subtypes of pediatric AML. Also, combining EZH2 inhibitors with selinexor may increase the treatment efficacy in these patients.
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Affiliation(s)
- Abdulhameed Al-Ghabkari
- Departments of Pediatrics, Oncology and Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Aru Narendran
- Departments of Pediatrics, Oncology and Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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15
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Hassan H, Szalat R. Genetic Predictors of Mortality in Patients with Multiple Myeloma. APPLICATION OF CLINICAL GENETICS 2021; 14:241-254. [PMID: 33953598 PMCID: PMC8092627 DOI: 10.2147/tacg.s262866] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 03/31/2021] [Indexed: 12/19/2022]
Abstract
Multiple myeloma (MM) is a heterogeneous disease featured by clonal plasma cell proliferation and genomic instability. The advent of next-generation sequencing allowed unraveling the complex genomic landscape of the disease. Several recurrent genomic aberrations including immunoglobulin genes translocations, copy number abnormalities, complex chromosomal events, transcriptomic and epigenomic deregulation, and mutations define various molecular subgroups with distinct outcomes. In this review, we describe the recurrent genomic events identified in MM impacting patients’ outcome and survival. These genomic aberrations constitute new markers that could be incorporated into a prognostication model to eventually guide therapy at every stage of the disease.
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Affiliation(s)
- Hamza Hassan
- Department of Hematology and Medical Oncology, Boston University Medical Center, Boston, MA, USA
| | - Raphael Szalat
- Department of Hematology and Medical Oncology, Boston University Medical Center, Boston, MA, USA.,Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
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16
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Nylund P, Atienza Párraga A, Haglöf J, De Bruyne E, Menu E, Garrido-Zabala B, Ma A, Jin J, Öberg F, Vanderkerken K, Kalushkova A, Jernberg-Wiklund H. A distinct metabolic response characterizes sensitivity to EZH2 inhibition in multiple myeloma. Cell Death Dis 2021; 12:167. [PMID: 33579905 PMCID: PMC7881125 DOI: 10.1038/s41419-021-03447-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 01/04/2021] [Accepted: 01/14/2021] [Indexed: 02/07/2023]
Abstract
Multiple myeloma (MM) is a heterogeneous haematological disease that remains clinically challenging. Increased activity of the epigenetic silencer EZH2 is a common feature in patients with poor prognosis. Previous findings have demonstrated that metabolic profiles can be sensitive markers for response to treatment in cancer. While EZH2 inhibition (EZH2i) has proven efficient in inducing cell death in a number of human MM cell lines, we hereby identified a subset of cell lines that despite a global loss of H3K27me3, remains viable after EZH2i. By coupling liquid chromatography-mass spectrometry with gene and miRNA expression profiling, we found that sensitivity to EZH2i correlated with distinct metabolic signatures resulting from a dysregulation of genes involved in methionine cycling. Specifically, EZH2i resulted in a miRNA-mediated downregulation of methionine cycling-associated genes in responsive cells. This induced metabolite accumulation and DNA damage, leading to G2 arrest and apoptosis. Altogether, we unveiled that sensitivity to EZH2i in human MM cell lines is associated with a specific metabolic and gene expression profile post-treatment.
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Affiliation(s)
- Patrick Nylund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Alba Atienza Párraga
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Jakob Haglöf
- Department of Medicinal Chemistry, Analytical Pharmaceutical Chemistry, Uppsala University, Uppsala, Sweden
| | - Elke De Bruyne
- Department of Haematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Eline Menu
- Department of Haematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Berta Garrido-Zabala
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Anqi Ma
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Jian Jin
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Fredrik Öberg
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Karin Vanderkerken
- Department of Haematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Antonia Kalushkova
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.
| | - Helena Jernberg-Wiklund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.
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Bivalent Genes Targeting of Glioma Heterogeneity and Plasticity. Int J Mol Sci 2021; 22:ijms22020540. [PMID: 33430434 PMCID: PMC7826605 DOI: 10.3390/ijms22020540] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/27/2020] [Accepted: 01/05/2021] [Indexed: 02/07/2023] Open
Abstract
Gliomas account for most primary Central Nervous System (CNS) neoplasms, characterized by high aggressiveness and low survival rates. Despite the immense research efforts, there is a small improvement in glioma survival rates, mostly attributed to their heterogeneity and complex pathophysiology. Recent data indicate the delicate interplay of genetic and epigenetic mechanisms in regulating gene expression and cell differentiation, pointing towards the pivotal role of bivalent genes. Bivalency refers to a property of chromatin to acquire more than one histone marks during the cell cycle and rapidly transition gene expression from an active to a suppressed transcriptional state. Although first identified in embryonal stem cells, bivalent genes have now been associated with tumorigenesis and cancer progression. Emerging evidence indicates the implication of bivalent gene regulation in glioma heterogeneity and plasticity, mainly involving Homeobox genes, Wingless-Type MMTV Integration Site Family Members, Hedgehog protein, and Solute Carrier Family members. These genes control a wide variety of cellular functions, including cellular differentiation during early organism development, regulation of cell growth, invasion, migration, angiogenesis, therapy resistance, and apoptosis. In this review, we discuss the implication of bivalent genes in glioma pathogenesis and their potential therapeutic targeting options.
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18
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Varlet E, Ovejero S, Martinez AM, Cavalli G, Moreaux J. Role of Polycomb Complexes in Normal and Malignant Plasma Cells. Int J Mol Sci 2020; 21:ijms21218047. [PMID: 33126754 PMCID: PMC7662980 DOI: 10.3390/ijms21218047] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/26/2020] [Accepted: 10/26/2020] [Indexed: 02/01/2023] Open
Abstract
Plasma cells (PC) are the main effectors of adaptive immunity, responsible for producing antibodies to defend the body against pathogens. They are the result of a complex highly regulated cell differentiation process, taking place in several anatomical locations and involving unique genetic events. Pathologically, PC can undergo tumorigenesis and cause a group of diseases known as plasma cell dyscrasias, including multiple myeloma (MM). MM is a severe disease with poor prognosis that is characterized by the accumulation of malignant PC within the bone marrow, as well as high clinical and molecular heterogeneity. MM patients frequently develop resistance to treatment, leading to relapse. Polycomb group (PcG) proteins are epigenetic regulators involved in cell fate and carcinogenesis. The emerging roles of PcG in PC differentiation and myelomagenesis position them as potential therapeutic targets in MM. Here, we focus on the roles of PcG proteins in normal and malignant plasma cells, as well as their therapeutic implications.
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Affiliation(s)
- Emmanuel Varlet
- Institute of Human Genetics, UMR 9002 Centre National de la Recherche Scientifique, University of Montpellier, Montpellier, 34396 Montpellier, France; (E.V.); (S.O.); (A.-M.M.); (G.C.)
| | - Sara Ovejero
- Institute of Human Genetics, UMR 9002 Centre National de la Recherche Scientifique, University of Montpellier, Montpellier, 34396 Montpellier, France; (E.V.); (S.O.); (A.-M.M.); (G.C.)
- Department of Biological Hematology, CHU Montpellier, 34295 Montpellier, France
| | - Anne-Marie Martinez
- Institute of Human Genetics, UMR 9002 Centre National de la Recherche Scientifique, University of Montpellier, Montpellier, 34396 Montpellier, France; (E.V.); (S.O.); (A.-M.M.); (G.C.)
| | - Giacomo Cavalli
- Institute of Human Genetics, UMR 9002 Centre National de la Recherche Scientifique, University of Montpellier, Montpellier, 34396 Montpellier, France; (E.V.); (S.O.); (A.-M.M.); (G.C.)
| | - Jerome Moreaux
- Institute of Human Genetics, UMR 9002 Centre National de la Recherche Scientifique, University of Montpellier, Montpellier, 34396 Montpellier, France; (E.V.); (S.O.); (A.-M.M.); (G.C.)
- Department of Biological Hematology, CHU Montpellier, 34295 Montpellier, France
- UFR Medicine, University of Montpellier, 34003 Montpellier, France
- Institut Universitaire de France (IUF), 75005 Paris, France
- Correspondence: ; Tel.: +33-04-6733-7903
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19
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In vitro and ex vivo gene expression profiling reveals differential kinetic response of HSPs and UPR genes is associated with PI resistance in multiple myeloma. Blood Cancer J 2020; 10:78. [PMID: 32724061 PMCID: PMC7387444 DOI: 10.1038/s41408-020-00344-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/16/2020] [Accepted: 05/21/2020] [Indexed: 12/18/2022] Open
Abstract
Extensive inter-individual variation in response to chemotherapy (sensitive vs resistant tumors) is a serious cause of concern in the treatment of multiple myeloma (MM). In this study, we used human myeloma cell lines (HMCLs), and patient-derived CD138+ cells to compare kinetic changes in gene expression patterns between innate proteasome inhibitor (PI)-sensitive and PI-resistant HMCLs following test dosing with the second-generation PI Ixazomib. We found 1553 genes that changed significantly post treatment in PI-sensitive HMCLs compared with only seven in PI-resistant HMCLs (p < 0.05). Genes that were uniquely regulated in PI-resistant lines were RICTOR (activated), HNF4A, miR-16-5p (activated), MYCN (inhibited), and MYC (inhibited). Ingenuity pathway analysis (IPA) using top kinetic response genes identified the proteasome ubiquitination pathway (PUP), and nuclear factor erythroid 2-related factor 2 (NRF2)-mediated oxidative stress response as top canonical pathways in Ix-sensitive cell lines and patient-derived cells, whereas EIF2 signaling and mTOR signaling pathways were unique to PI resistance. Further, 10 genes were common between our in vitro and ex vivo post-treatment kinetic PI response profiles and Shaughnessy’s GEP80-postBz gene expression signature, including the high-risk PUP gene PSMD4. Notably, we found that heat shock proteins and PUP pathway genes showed significant higher upregulation in Ix-sensitive lines compared with the fold-change in Ix-resistant myelomas.
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Zhang X, Murray B, Mo G, Shern JF. The Role of Polycomb Repressive Complex in Malignant Peripheral Nerve Sheath Tumor. Genes (Basel) 2020; 11:genes11030287. [PMID: 32182803 PMCID: PMC7140867 DOI: 10.3390/genes11030287] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/24/2020] [Accepted: 03/02/2020] [Indexed: 12/24/2022] Open
Abstract
Malignant peripheral nerve sheath tumors (MPNSTs) are aggressive soft tissue sarcomas that can arise most frequently in patients with neurofibromatosis type 1 (NF1). Despite an increasing understanding of the molecular mechanisms that underlie these tumors, there remains limited therapeutic options for this aggressive disease. One potentially critical finding is that a significant proportion of MPNSTs exhibit recurrent mutations in the genes EED or SUZ12, which are key components of the polycomb repressive complex 2 (PRC2). Tumors harboring these genetic lesions lose the marker of transcriptional repression, trimethylation of lysine residue 27 on histone H3 (H3K27me3) and have dysregulated oncogenic signaling. Given the recurrence of PRC2 alterations, intensive research efforts are now underway with a focus on detailing the epigenetic and transcriptomic consequences of PRC2 loss as well as development of novel therapeutic strategies for targeting these lesions. In this review article, we will summarize the recent findings of PRC2 in MPNST tumorigenesis, including highlighting the functions of PRC2 in normal Schwann cell development and nerve injury repair, as well as provide commentary on the potential therapeutic vulnerabilities of a PRC2 deficient tumor cell.
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Affiliation(s)
- Xiyuan Zhang
- Pediatric Oncology Branch, Tumor Evolution and Genomics Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA; (X.Z.); (B.M.); (G.M.)
| | - Béga Murray
- Pediatric Oncology Branch, Tumor Evolution and Genomics Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA; (X.Z.); (B.M.); (G.M.)
- The Patrick G Johnston Centre for Cancer Research, Queen’s University Belfast, 97 Lisburn road, Belfast BT9 7AE, UK
| | - George Mo
- Pediatric Oncology Branch, Tumor Evolution and Genomics Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA; (X.Z.); (B.M.); (G.M.)
- SUNY Downstate Health Sciences University, Brooklyn, NY 11203, USA
| | - Jack F. Shern
- Pediatric Oncology Branch, Tumor Evolution and Genomics Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA; (X.Z.); (B.M.); (G.M.)
- Correspondence:
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21
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Li B, Chng WJ. EZH2 abnormalities in lymphoid malignancies: underlying mechanisms and therapeutic implications. J Hematol Oncol 2019; 12:118. [PMID: 31752930 PMCID: PMC6868783 DOI: 10.1186/s13045-019-0814-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 10/27/2019] [Indexed: 02/08/2023] Open
Abstract
EZH2 is the catalytic subunit of the polycomb repressive complex 2 (PRC2), which along with other PRC2 components mediates gene expression suppression via the methylation of Histone H3 at lysine 27. Recent studies have revealed a dichotomous role of EZH2 in physiology and in the pathogenesis of cancer. While it plays an essential role in the development of the lymphoid system, its deregulation, whether due to genetic or non-genetic causes, promotes B cell- and T cell-related lymphoma or leukemia. These findings triggered a boom in the development of therapeutic EZH2 inhibitors in recent years. Here, we discuss physiologic and pathogenic function of EZH2 in lymphoid context, various internal causes of EZH2 aberrance and how EZH2 modulates lymphomagenesis through epigenetic silencing, post-translational modifications (PTMs), orchestrating with surrounding tumor micro-environment and associating with RNA or viral partners. We also summarize different strategies to directly inhibit PRC2-EZH2 or to intervene EZH2 upstream signaling.
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Affiliation(s)
- Boheng Li
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Wee-Joo Chng
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore. .,Department of Haematology-Oncology, National University Cancer Institute of Singapore, Singapore, Singapore. .,Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
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22
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EZH2 Overexpression in Multiple Myeloma: Prognostic Value, Correlation With Clinical Characteristics, and Possible Mechanisms. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2019; 19:744-750. [DOI: 10.1016/j.clml.2019.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/18/2019] [Accepted: 08/22/2019] [Indexed: 12/11/2022]
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23
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Rizk M, Rizq O, Oshima M, Nakajima-Takagi Y, Koide S, Saraya A, Isshiki Y, Chiba T, Yamazaki S, Ma A, Jin J, Iwama A, Mimura N. Akt inhibition synergizes with polycomb repressive complex 2 inhibition in the treatment of multiple myeloma. Cancer Sci 2019; 110:3695-3707. [PMID: 31571328 PMCID: PMC6890440 DOI: 10.1111/cas.14207] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/18/2019] [Accepted: 09/23/2019] [Indexed: 12/19/2022] Open
Abstract
Polycomb repressive complex 2 (PRC2) components, EZH2 and its homolog EZH1, and PI3K/Akt signaling pathway are focal points as therapeutic targets for multiple myeloma. However, the exact crosstalk between their downstream targets remains unclear. We herein elucidated some epigenetic interactions following Akt inhibition and demonstrated the efficacy of the combined inhibition of Akt and PRC2. We found that TAS-117, a potent and selective Akt inhibitor, downregulated EZH2 expression at the mRNA and protein levels via interference with the Rb-E2F pathway, while EZH1 was compensatively upregulated to maintain H3K27me3 modifications. Consistent with these results, the dual EZH2/EZH1 inhibitor, UNC1999, but not the selective EZH2 inhibitor, GSK126, synergistically enhanced TAS-117-induced cytotoxicity and provoked myeloma cell apoptosis. RNA-seq analysis revealed the activation of the FOXO signaling pathway after TAS-117 treatment. FOXO3/4 mRNA and their downstream targets were upregulated with the enhanced nuclear localization of FOXO3 protein after TAS-117 treatment. ChIP assays confirmed the direct binding of FOXO3 to EZH1 promoter, which was enhanced by TAS-117 treatment. Moreover, FOXO3 knockdown repressed EZH1 expression. Collectively, the present results reveal some molecular interactions between Akt signaling and epigenetic modulators, which emphasize the benefits of targeting PRC2 full activity and the Akt pathway as a therapeutic option for multiple myeloma.
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Affiliation(s)
- Mohamed Rizk
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.,Division of Stem Cell and Molecular Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Ola Rizq
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Multiple Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Motohiko Oshima
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.,Division of Stem Cell and Molecular Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Yaeko Nakajima-Takagi
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.,Division of Stem Cell and Molecular Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Shuhei Koide
- Division of Stem Cell and Molecular Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Atsunori Saraya
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Yusuke Isshiki
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.,Department of Hematology, Chiba University Hospital, Chiba, Japan.,Department of Clinical Cell Biology and Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tetsuhiro Chiba
- Department of Gastroenterology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Satoshi Yamazaki
- Division of Stem Cell Biology, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Anqi Ma
- Department of Pharmacological Sciences, Mount Sinai Center for Therapeutics Discovery, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Oncological Sciences, Mount Sinai Center for Therapeutics Discovery, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jian Jin
- Department of Pharmacological Sciences, Mount Sinai Center for Therapeutics Discovery, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Oncological Sciences, Mount Sinai Center for Therapeutics Discovery, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Atsushi Iwama
- Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan.,Division of Stem Cell and Molecular Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Naoya Mimura
- Department of Transfusion Medicine and Cell Therapy, Chiba University Hospital, Chiba, Japan
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24
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Sabour Takanlu J, Aghaie Fard A, Mohammdi S, Hosseini Rad SMA, Abroun S, Nikbakht M. Indirect Tumor Inhibitory Effects of MicroRNA-124 through Targeting EZH2 in The Multiple Myeloma Cell Line. CELL JOURNAL 2019; 22:23-29. [PMID: 31606963 PMCID: PMC6791060 DOI: 10.22074/cellj.2020.6492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 01/19/2019] [Indexed: 11/12/2022]
Abstract
Objective Multiple myeloma (MM) is an incurable plasma cell malignancy. Several genetic and epigenetic changes
affect numerous critical genes expression status in this disorder. CDKN2A gene is expressed at low level in almost all
cases with MM disease. The mechanism of this gene down-regulation has remained controversial. In the present study,
we targeted EZH2 by microRNA-124 (miR-124) in L-363 cells and assessed following possible impact on CDKN2A
gene expression and phenotypic changes.
Materials and Methods In this experimental study, growth inhibitory effects of miR-124 were measured by MTT assay
in L-363 cell line. Likewise, cell cycle assay was measured by flowcytometery. The expression levels of EZH2 and
CDKN2A were evaluated by real-time quantitative reverse-transcription polymerase chain reaction (qRT-PCR).
Results qRT-PCR results showed induction of EZH2 gene expression after transduction of cells with lentivector
expressing miR-124. The expression of CDKN2A was also upregulated as the result of EZH2 supression. Coincide
with gene expression changes, cell cycle analysis by flow-cytometry indicated slightly increased G1-arrest in miR-
transduced cells (P<0.05). MTT assay results also showed a significant decrease in viability and proliferation of miR-
transduced cells (P<0.05).
Conclusion It seems that assembling of H3K27me3 mark mediated by EZH2 is one of the key mechanisms of suppressing
CDKN2A gene expression in MM disease. However, this suppressive function is applied by a multi-factor mechanism. In
other words, targeting EZH2, as the core functional subunit of PRC2 complex, can increase expression of the downstream
suppressive genes. Consequently, by increasing expression of tumor suppressor genes, myeloma cells are stopped from
aberrant expansions and they become susceptible to regulated cellular death.
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Affiliation(s)
- Javid Sabour Takanlu
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.,Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Arad Aghaie Fard
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Saeed Mohammdi
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Hematologic Malignancies Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Saeid Abroun
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Electronic Address:
| | - Mohsen Nikbakht
- Hematology, Oncology and Stem Cell Transplantation Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Hematologic Malignancies Research Center, Tehran University of Medical Sciences, Tehran, Iran. Electronic Address:
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Xu H, Zhang L, Qian X, Zhou X, Yan Y, Zhou J, Ge W, Albahde M, Wang W. GSK343 induces autophagy and downregulates the AKT/mTOR signaling pathway in pancreatic cancer cells. Exp Ther Med 2019; 18:2608-2616. [PMID: 31572509 PMCID: PMC6755448 DOI: 10.3892/etm.2019.7845] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 07/08/2019] [Indexed: 12/13/2022] Open
Abstract
Pancreatic cancer is a common malignancy that has a poor prognosis and limited therapeutic options. Enhancer of zeste homolog 2 (EZH2) serves a key role in the progression of different types of cancers. The effect of GSK343 (a competitive inhibitor of EZH2) on pancreatic cancer cells was assessed in the present study. Cell viability was evaluated using MTT and cell counting kit-8 assays in AsPC-1 and PANC-1 cells. Flow cytometry and an EdU assay were also performed to assess the effects of GSK343 on cell proliferation, apoptosis and the cell cycle. The induction of autophagy and associated molecular mechanisms were studied using fluorescence microscopy and western blot analysis. The results demonstrated that GSK343 inhibited cell viability in a dose- and time-dependent manner. Furthermore, GSK343 suppressed cell proliferation, promoted apoptosis and blocked cell cycle progression at the G1-phase. Furthermore, GSK343 induced autophagy in pancreatic cancer via the AKT/mTOR signaling pathway. In conclusion, GSK343 exhibited an anti-cancer effect on pancreatic cancer cells, downregulating the AKT/mTOR signaling pathway.
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Affiliation(s)
- Hao Xu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
| | - Linshi Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
| | - Xiaohui Qian
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
| | - Xiaohu Zhou
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
| | - Yingcai Yan
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
| | - Jiarong Zhou
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
| | - Wenhao Ge
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
| | - Mugahed Albahde
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
| | - Weilin Wang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China.,Clinical Research Center of Hepatobiliary and Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310009, P.R. China
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26
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EZH2 is overexpressed in transitional preplasmablasts and is involved in human plasma cell differentiation. Leukemia 2019; 33:2047-2060. [PMID: 30755708 PMCID: PMC6756037 DOI: 10.1038/s41375-019-0392-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Revised: 12/09/2018] [Accepted: 01/11/2019] [Indexed: 12/13/2022]
Abstract
Plasma cells (PCs) play a major role in the defense of the host organism against pathogens. We have shown that PC generation can be modeled using multi-step culture systems that reproduce the sequential cell differentiation occurring in vivo. Using this unique model, we investigated the role of EZH2 during PC differentiation (PCD) using H3K27me3 and EZH2 ChIP-binding profiles. We then studied the effect of the inhibition of EZH2 enzymatic activity to understand how EZH2 regulates the key functions involved in PCD. EZH2 expression significantly increases in preplasmablasts with H3K27me3 mediated repression of genes involved in B cell and plasma cell identity. EZH2 was also found to be recruited to H3K27me3-free promoters of transcriptionally active genes known to regulate cell proliferation. Inhibition the catalytic activity of EZH2 resulted in B to PC transcriptional changes associated with PC maturation induction, as well as higher immunoglobulin secretion. Altogether, our data suggest that EZH2 is involved in the maintenance of preplasmablast transitory immature proliferative state that supports their amplification.
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27
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De Smedt E, Lui H, Maes K, De Veirman K, Menu E, Vanderkerken K, De Bruyne E. The Epigenome in Multiple Myeloma: Impact on Tumor Cell Plasticity and Drug Response. Front Oncol 2018; 8:566. [PMID: 30619733 PMCID: PMC6297718 DOI: 10.3389/fonc.2018.00566] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 11/13/2018] [Indexed: 01/19/2023] Open
Abstract
Multiple myeloma (MM) is a clonal plasma cell malignancy that develops primarily in the bone marrow (BM), where reciprocal interactions with the BM niche foster MM cell survival, growth, and drug resistance. MM cells furthermore reshape the BM to their own needs by affecting the different BM stromal cell types resulting in angiogenesis, bone destruction, and immune suppression. Despite recent advances in treatment modalities, MM remains most often incurable due to the development of drug resistance to all standard of care agents. This underscores the unmet need for these heavily treated relapsed/refractory patients. Disruptions in epigenetic regulation are a well-known hallmark of cancer cells, contributing to both cancer onset and progression. In MM, sequencing and gene expression profiling studies have also identified numerous epigenetic defects, including locus-specific DNA hypermethylation of cancer-related and B cell specific genes, genome-wide DNA hypomethylation and genetic defects, copy number variations and/or abnormal expression patterns of various chromatin modifying enzymes. Importantly, these so-called epimutations contribute to genomic instability, disease progression, and a worse outcome. Moreover, the frequency of mutations observed in genes encoding for histone methyltransferases and DNA methylation modifiers increases following treatment, indicating a role in the emergence of drug resistance. In support of this, accumulating evidence also suggest a role for the epigenetic machinery in MM cell plasticity, driving the differentiation of the malignant cells to a less mature and drug resistant state. This review discusses the current state of knowledge on the role of epigenetics in MM, with a focus on deregulated histone methylation modifiers and the impact on MM cell plasticity and drug resistance. We also provide insight into the potential of epigenetic modulating agents to enhance clinical drug responses and avoid disease relapse.
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Affiliation(s)
- Eva De Smedt
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Hui Lui
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
- Department of Hematology, Tianjin Medical University General Hospital, Tianjin, China
| | - Ken Maes
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Kim De Veirman
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Eline Menu
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Karin Vanderkerken
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
| | - Elke De Bruyne
- Department of Hematology and Immunology-Myeloma Center Brussels, Vrije Universiteit Brussel, Brussels, Belgium
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28
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Tremblay-LeMay R, Rastgoo N, Pourabdollah M, Chang H. EZH2 as a therapeutic target for multiple myeloma and other haematological malignancies. Biomark Res 2018; 6:34. [PMID: 30555699 PMCID: PMC6286605 DOI: 10.1186/s40364-018-0148-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 11/02/2018] [Indexed: 12/12/2022] Open
Abstract
Enhancer of zeste homolog 2 (EZH2) is a histone methyltransferase that is of great interest in human cancer. It has been shown to have a dual nature, as it can act as a gene repressor or activator. Studies have highlighted the various roles of EZH2 in the pathophysiology of multiple myeloma (MM). It was also shown to have a role in the development of drug resistance in MM. There are several ongoing clinical trials of EZH2 inhibitors in haematological malignancies. Pre-clinical studies have provided a rationale for the therapeutic relevance of EZH2 inhibitors in MM. This paper reviews the evidence supporting the role of EZH2 in MM pathophysiology and drug resistance, with an emphasis on interactions between EZH2 and microRNAs, as well as the prognostic significance of EZH2 expression in MM. Furthermore, results from the pre-clinical studies of EZH2 inhibition in MM and currently available interim results from clinical trials of EZH2 inhibitors in haematological malignancies are presented. Preliminary data exploring anticipated mechanisms of resistance to EZH2 inhibitors are also reviewed. There is therefore strong evidence to support the relevance of targeting EZH2 for the treatment of MM.
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Affiliation(s)
- Rosemarie Tremblay-LeMay
- 1Laboratory medicine program, Toronto General Hospital, University Health Network, University of Toronto, 200 Elizabeth Street, 11th floor, Toronto, ON M5G 2C4 Canada
| | - Nasrin Rastgoo
- 2Division of Molecular and Cellular Biology, Toronto General Research Institute, Toronto, Canada
| | - Maryam Pourabdollah
- 1Laboratory medicine program, Toronto General Hospital, University Health Network, University of Toronto, 200 Elizabeth Street, 11th floor, Toronto, ON M5G 2C4 Canada
| | - Hong Chang
- 1Laboratory medicine program, Toronto General Hospital, University Health Network, University of Toronto, 200 Elizabeth Street, 11th floor, Toronto, ON M5G 2C4 Canada.,2Division of Molecular and Cellular Biology, Toronto General Research Institute, Toronto, Canada.,3Department of Talent Highland, First Affiliated Hospital of Xi'an Jiao Tong University, Xian, China
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29
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Nakagawa M, Fujita S, Katsumoto T, Yamagata K, Ogawara Y, Hattori A, Kagiyama Y, Honma D, Araki K, Inoue T, Kato A, Inaki K, Wada C, Ono Y, Yamamoto M, Miura O, Nakashima Y, Kitabayashi I. Dual inhibition of enhancer of zeste homolog 1/2 overactivates WNT signaling to deplete cancer stem cells in multiple myeloma. Cancer Sci 2018; 110:194-208. [PMID: 30343511 PMCID: PMC6317945 DOI: 10.1111/cas.13840] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/09/2018] [Accepted: 10/11/2018] [Indexed: 12/19/2022] Open
Abstract
Multiple myeloma (MM) is an incurable hematological malignancy caused by accumulation of abnormal clonal plasma cells. Despite the recent development of novel therapies, relapse of MM eventually occurs as a result of a remaining population of drug‐resistant myeloma stem cells. Side population (SP) cells show cancer stem cell‐like characteristics in MM; thus, targeting these cells is a promising strategy to completely cure this malignancy. Herein, we showed that SP cells expressed higher levels of enhancer of zeste homolog (EZH) 1 and EZH2, which encode the catalytic subunits of Polycomb repressive complex 2 (PRC2), than non‐SP cells, suggesting that EZH1 as well as EZH2 contributes to the stemness maintenance of the MM cells and that targeting both EZH1/2 is potentially a significant therapeutic approach for eradicating myeloma stem cells. A novel orally bioavailable EZH1/2 dual inhibitor, OR‐S1, effectively eradicated SP cells and had a greater antitumor effect than a selective EZH2 inhibitor in vitro and in vivo, including a unique patient‐derived xenograft model. Moreover, long‐term continuous dosing of OR‐S1 completely cured mice bearing orthotopic xenografts. Additionally, PRC2 directly regulated WNT signaling in MM, and overactivation of this signaling induced by dual inhibition of EZH1/2 eradicated myeloma stem cells and negatively affected tumorigenesis, suggesting that repression of WNT signaling by PRC2 plays an important role in stemness maintenance of MM cells. Our results show the role of EZH1/2 in the maintenance of myeloma stem cells and provide a preclinical rationale for therapeutic application of OR‐S1, leading to significant advances in the treatment of MM.
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Affiliation(s)
- Makoto Nakagawa
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan.,Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shuhei Fujita
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Takuo Katsumoto
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Kazutsune Yamagata
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Yoko Ogawara
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Ayuna Hattori
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
| | - Yuki Kagiyama
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan.,Laboratory of Oncology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Daisuke Honma
- Oncology Laboratories, Daiichi Sankyo Co., Ltd, Tokyo, Japan
| | - Kazushi Araki
- Oncology Laboratories, Daiichi Sankyo Co., Ltd, Tokyo, Japan
| | - Tatsuya Inoue
- Functional Genomics and Proteomics Research Group, Discovery Science and Technology Department, Daiichi Sankyo RD Novare Co., Ltd, Tokyo, Japan
| | - Ayako Kato
- Functional Genomics and Proteomics Research Group, Discovery Science and Technology Department, Daiichi Sankyo RD Novare Co., Ltd, Tokyo, Japan
| | - Koichiro Inaki
- Functional Genomics and Proteomics Research Group, Discovery Science and Technology Department, Daiichi Sankyo RD Novare Co., Ltd, Tokyo, Japan
| | - Chisa Wada
- Functional Genomics and Proteomics Research Group, Discovery Science and Technology Department, Daiichi Sankyo RD Novare Co., Ltd, Tokyo, Japan
| | - Yoshimasa Ono
- Functional Genomics and Proteomics Research Group, Discovery Science and Technology Department, Daiichi Sankyo RD Novare Co., Ltd, Tokyo, Japan
| | - Masahide Yamamoto
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Osamu Miura
- Department of Hematology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yasuharu Nakashima
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Issay Kitabayashi
- Division of Hematological Malignancy, National Cancer Center Research Institute, Tokyo, Japan
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Herviou L, Kassambara A, Boireau S, Robert N, Requirand G, Müller-Tidow C, Vincent L, Seckinger A, Goldschmidt H, Cartron G, Hose D, Cavalli G, Moreaux J. PRC2 targeting is a therapeutic strategy for EZ score defined high-risk multiple myeloma patients and overcome resistance to IMiDs. Clin Epigenetics 2018; 10:121. [PMID: 30285865 PMCID: PMC6171329 DOI: 10.1186/s13148-018-0554-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 09/24/2018] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Multiple myeloma (MM) is a malignant plasma cell disease with a poor survival, characterized by the accumulation of myeloma cells (MMCs) within the bone marrow. Epigenetic modifications in MM are associated not only with cancer development and progression, but also with drug resistance. METHODS We identified a significant upregulation of the polycomb repressive complex 2 (PRC2) core genes in MM cells in association with proliferation. We used EPZ-6438, a specific small molecule inhibitor of EZH2 methyltransferase activity, to evaluate its effects on MM cells phenotype and gene expression prolile. RESULTS PRC2 targeting results in growth inhibition due to cell cycle arrest and apoptosis together with polycomb, DNA methylation, TP53, and RB1 target genes induction. Resistance to EZH2 inhibitor is mediated by DNA methylation of PRC2 target genes. We also demonstrate a synergistic effect of EPZ-6438 and lenalidomide, a conventional drug used for MM treatment, activating B cell transcription factors and tumor suppressor gene expression in concert with MYC repression. We establish a gene expression-based EZ score allowing to identify poor prognosis patients that could benefit from EZH2 inhibitor treatment. CONCLUSIONS These data suggest that PRC2 targeting in association with IMiDs could have a therapeutic interest in MM patients characterized by high EZ score values, reactivating B cell transcription factors, and tumor suppressor genes.
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Affiliation(s)
| | - Alboukadel Kassambara
- Department of Biological Hematology, CHU Montpellier, Montpellier, France
- IGH, CNRS, Univ Montpellier, Montpellier, France
| | - Stéphanie Boireau
- Department of Biological Hematology, CHU Montpellier, Montpellier, France
- IGH, CNRS, Univ Montpellier, Montpellier, France
| | - Nicolas Robert
- Department of Biological Hematology, CHU Montpellier, Montpellier, France
- IGH, CNRS, Univ Montpellier, Montpellier, France
| | - Guilhem Requirand
- Department of Biological Hematology, CHU Montpellier, Montpellier, France
- IGH, CNRS, Univ Montpellier, Montpellier, France
| | - Carsten Müller-Tidow
- Medizinische Klinik und Poliklinik V, Universitätsklinikum Heidelberg, Heidelberg, Germany
| | - Laure Vincent
- Department of Clinical Hematology, CHU Montpellier, Montpellier, France
| | - Anja Seckinger
- Medizinische Klinik und Poliklinik V, Universitätsklinikum Heidelberg, Heidelberg, Germany
- Nationales Centrum für Tumorerkrankungen, Heidelberg, Germany
| | - Hartmut Goldschmidt
- Medizinische Klinik und Poliklinik V, Universitätsklinikum Heidelberg, Heidelberg, Germany
- Nationales Centrum für Tumorerkrankungen, Heidelberg, Germany
| | - Guillaume Cartron
- UFR de Médecine, Univ Montpellier, Montpellier, France
- Department of Clinical Hematology, CHU Montpellier, Montpellier, France
- UMR CNRS 5235, Univ Montpellier, Montpellier, France
| | - Dirk Hose
- Medizinische Klinik und Poliklinik V, Universitätsklinikum Heidelberg, Heidelberg, Germany
- Nationales Centrum für Tumorerkrankungen, Heidelberg, Germany
| | | | - Jerome Moreaux
- Department of Biological Hematology, CHU Montpellier, Montpellier, France.
- IGH, CNRS, Univ Montpellier, Montpellier, France.
- UFR de Médecine, Univ Montpellier, Montpellier, France.
- Laboratory for Monitoring Innovative Therapies, Department of Biological Hematology, Hôpital Saint-Eloi-CHRU de Montpellier, 80, av. Augustin Fliche, 34295, Montpellier, Cedex 5, France.
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Abstract
The enhancer of zeste homolog 2 (EZH2) is the enzymatic subunit of the polycomb repressive complex 2 (PRC2) that exerts important functions during normal development as well as disease. PRC2 through EZH2 tri-methylates histone H3 lysine tail residue 27 (H3K27me3), a modification associated with repression of gene expression programs related to stem cell self-renewal, cell cycle, cell differentiation, and cellular transformation. EZH2 is deregulated and subjected to gain of function or loss of function mutations, and hence functions as an oncogene or tumor suppressor gene in a context-dependent manner. The development of highly selective inhibitors against the histone methyltransferase activity of EZH2 has also contributed to insight into the role of EZH2 and PRC2 in tumorigenesis, and their potential as therapeutic targets in cancer. EZH2 can function as an oncogene in multiple myeloma (MM) by repressing tumor suppressor genes that control apoptosis, cell cycle control and adhesion properties. Taken together these findings have raised the possibility that EZH2 inhibitors could be a useful therapeutic modality in MM alone or in combination with other targeted agents in MM. Therefore, we review the current knowledge on the regulation of EZH2 and its biological impact in MM, the anti-myeloma activity of EZH2 inhibitors and their potential as a targeted therapy in MM.
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Affiliation(s)
- Mohammad Alzrigat
- Division of Hematology and Oncology, Department of Medicine, University of Florida Health Cancer Center, University of Florida, Gainesville, FL 32610, USA;
| | - Helena Jernberg-Wiklund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, SE-75185 Uppsala, Sweden;
| | - Jonathan D Licht
- Division of Hematology and Oncology, Department of Medicine, University of Florida Health Cancer Center, University of Florida, Gainesville, FL 32610, USA;
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The biological significance of histone modifiers in multiple myeloma: clinical applications. Blood Cancer J 2018; 8:83. [PMID: 30190472 PMCID: PMC6127133 DOI: 10.1038/s41408-018-0119-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 07/20/2018] [Accepted: 07/31/2018] [Indexed: 12/12/2022] Open
Abstract
Multiple myeloma (MM) is a clonal plasma cell disorder that is characterized by a variety of genetic alterations. Recent studies have highlighted not only the importance of these genetic events but also epigenetic aberrations including DNA methylation, histone modifications, and non-coding RNAs in the biology of MM. Post-translational modifications of histone, such as methylation and acetylation, contribute to chromatin dynamics, and are modulated by histone modifying enzymes, and dysregulation of these enzymes is implicated in the pathogenesis of cancers, including MM. Histone modifiers also have non-histone substrates and enzymatically independent roles, which are also involved in tumorigenesis. Here we review and provide comprehensive insight into the biologic significance of histone methyl- and acetyl-modifiers in MM, and further provide an overview of the clinical applications of histone modifier inhibitors, especially histone deacetylase inhibitors. These findings underline the emerging roles of histone modifiers in the pathogenesis of MM, and further highlight the possibility of novel epigenetic therapies in MM.
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33
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Herviou L, Cavalli G, Moreaux J. [EZH2 is therapeutic target for personalized treatment in multiple myeloma]. Bull Cancer 2018; 105:804-819. [PMID: 30041976 DOI: 10.1016/j.bulcan.2018.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/05/2018] [Accepted: 06/06/2018] [Indexed: 12/30/2022]
Abstract
Enhancer of zeste homolog 2 (EZH2) is a histone methyltransferase that functions as the catalytic subunit of the polycomb repressive complex 2 (PRC2). PRC2 represses gene transcription through tri-methylation of lysine 27 of histone 3 (H3K27me3) by its catalytic subunit EZH2. EZH2 is also involved in normal B cell differentiation. EZH2 deregulation has been described in many cancer types including hematological malignancies. The oncogenic addiction of tumor cells to EZH2 represents a therapeutic target in several hematological malignancies and solid cancers. Specific small molecules have been recently developed to target cancer cells with EZH2 overexpression or activating mutation. Their therapeutic potential is currently under evaluation. In particular, EZH2 is overexpressed in multiple myeloma (MM), a neoplasia characterized by the accumulation of clonal plasma cells within the bone marrow, with biological functions in the pathophysiology. This review summarizes the roles of EZH2 in B cell differentiation and pathologic hematological processes with a particular focus in multiple myeloma. We also discuss recent advances in the development of EZH2 inhibitors for the personalized treatment of patients with hematological malignancies.
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Affiliation(s)
- Laurie Herviou
- IGH, CNRS, université Montpellier, 141, rue de la Cardonille, 34090 Montpellier, France
| | - Giacomo Cavalli
- IGH, CNRS, université Montpellier, 141, rue de la Cardonille, 34090 Montpellier, France
| | - Jerome Moreaux
- IGH, CNRS, université Montpellier, 141, rue de la Cardonille, 34090 Montpellier, France; CHU de Montpellier, department of biological hematology, 80, avenue Augustin-Fliche, 34090 Montpellier, France; Université Montpellier, UFR de médecine, 2, rue École de Médecine, CS 59001, 34060 Montpellier cedex 2, France.
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34
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Dysregulation of EZH2/miR-138 axis contributes to drug resistance in multiple myeloma by downregulating RBPMS. Leukemia 2018; 32:2471-2482. [PMID: 29743723 DOI: 10.1038/s41375-018-0140-y] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 04/05/2018] [Accepted: 04/10/2018] [Indexed: 02/06/2023]
Abstract
EZH2 is highly expressed in multiple myeloma (MM). However, the molecular mechanisms underlying EZH2 overexpression and its role in drug resistance of MM remain undefined. Here we show that EZH2 is upregulated in drug-resistant MM cells and its aberrant overexpression is associated with poor prognosis of MM patients. Overexpression of EZH2 in parental MM cells renders them resistant to anti-myeloma drugs and suppression of EZH2 displays the opposite effects. Using miRNA target scan algorithms, we identify miR-138 as a regulator of EZH2, which is conversely repressed by EZH2-induced H3K27 trimethylation in MM-resistant cell lines and primary tumor cells. Analysis of ChIP-seq dataset and H3K27me3 ChIP reveals that RBPMS is a direct and functionally relevant target of EZH2. RBPMS silencing confers resistance to MM cells and restoration of RBPMS by miR-138 overexpression re-sensitizes the resistant cells to drug. Importantly, in vivo delivery of miR-138 mimics or pharmacological inhibitor of EZH2 in combination with a proteasome inhibitor, bortezomib, induces significant regression of tumors in xenograft model. This study establishes EZH2/miR-138 axis as a potential therapeutic target for MM.
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35
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EZH2 inhibitors sensitize myeloma cell lines to panobinostat resulting in unique combinatorial transcriptomic changes. Oncotarget 2018; 9:21930-21942. [PMID: 29774113 PMCID: PMC5955152 DOI: 10.18632/oncotarget.25128] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 03/27/2018] [Indexed: 12/19/2022] Open
Abstract
Multiple myeloma (MM) remains a largely incurable hematologic cancer due to an inability to broadly target inevitable drug-resistant relapse. Epigenetic abnormalities are abundantly present in multiple myeloma and have increasingly demonstrated critical roles for tumor development and relapse to standard therapies. Accumulating evidence suggests that the histone methyltransferase EZH2 is aberrantly active in MM. We tested the efficacy of EZH2 specific inhibitors in a large panel of human MM cell lines (HMCLs) and found that only a subset of HMCLs demonstrate single agent sensitivity despite ubiquitous global H3K27 demethylation. Pre-treatment with EZH2 inhibitors greatly enhanced the sensitivity of HMCLs to the pan-HDAC inhibitor panobinostat in nearly all cases regardless of single agent EZH2 inhibitor sensitivity. Transcriptomic profiling revealed large-scale transcriptomic alteration by EZH2 inhibition highly enriched for cancer-related pathways. Combination treatment greatly increased the scale of gene expression change with a large portion of differentially expressed genes being unique to the combination. Transcriptomic analysis demonstrated that combination treatment further perturbed oncogenic pathways and signaling nodes consistent with an antiproliferative/pro-apoptotic state. We conclude that combined inhibition of HDAC and EZH2 inhibitors is a promising therapeutic strategy to broadly target the epigenetic landscape of aggressive MM.
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36
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Sun S, Wu Y, Guo W, Yu F, Kong L, Ren Y, Wang Y, Yao X, Jing C, Zhang C, Liu M, Zhang Y, Zhao M, Li Z, Wu C, Qiao Y, Yang J, Wang X, Zhang L, Li M, Zhou X. STAT3/HOTAIR Signaling Axis Regulates HNSCC Growth in an EZH2-dependent Manner. Clin Cancer Res 2018. [PMID: 29540490 DOI: 10.1158/1078-0432.ccr-16-2248] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Purpose: PI3K and STAT3 are frequently activated in cancer progression. However, little is known about the underlying mechanisms by which PI3K and STAT3 regulate head and neck squamous cell cancer (HNSCC) growth. The lncRNA HOX transcript antisense RNA (HOTAIR) was found to modulate the progression of HNSCC. In this study, we attempted to establish the correlation of PI3K/STAT3/HOTAIR signaling with the progression of HNSCC and its sensitivity toward platinum-based and targeted anti-EGFR combination therapy.Experimental Design: We first analyzed the STAT3/HOTAIR and PI3K/AKT level in human HNSCC samples. We then activated or suppressed STAT3/HOTAIR and determined the effects on HNSCC cell proliferation in vitro and the growth of UM1 xenograft tumor, an orthotopic model of HNSCC. The sensitivity of HNSCC cells toward cisplatin and cetuximab was determined by in vitro assays.Results: HNSCC samples showed significantly robust expression/activation of STAT3, HOTAIR, PI3K, and AKT, compared with normal squamous epithelium. STAT3 inhibition with WP1066 decreased HOTAIR level and sensitized HNSCC to cisplatin or cetuximab. STAT3 promoted HOTAIR transcription and its interaction with pEZH2-S21, resulting in enhanced growth of HNSCC cells. In addition, overexpression of HOTAIR promoted the growth of UM1 xenograft tumors in vivoConclusions: Our results suggest that STAT3 signaling promotes HNSCC progression via regulating HOTAIR and pEZH2-S21 in HNSCC with PI3K overexpression/activation. These findings provide a rationale to target the STAT3/HOTAIR/pEZH2-S21 regulatory axis for treating patients with HNSCC. Clin Cancer Res; 24(11); 2665-77. ©2018 AACR.
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Affiliation(s)
- Shanshan Sun
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China.,Department of Medicine, Department of Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Yansheng Wu
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Wenyu Guo
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Feng Yu
- Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Lingping Kong
- Department of Medical Oncology, Tianjin Medical University General Hospital, Tianjin, China
| | - Yu Ren
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Yu Wang
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Xiaofeng Yao
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Chao Jing
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Chao Zhang
- Department of Genitourinary Oncology, Tianjin Medical University Cancer Institute & Hospital, Tianjin, China
| | - Mingyang Liu
- Department of Medicine, Department of Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Yuqing Zhang
- Department of Medicine, Department of Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Minghui Zhao
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Zhaoqing Li
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Chuanqiang Wu
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Yu Qiao
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Jingxuan Yang
- Department of Medicine, Department of Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Xudong Wang
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China
| | - Lun Zhang
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China.
| | - Min Li
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China. .,Department of Medicine, Department of Surgery, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Xuan Zhou
- Department of Maxillofacial and Otorhinolaryngology Oncology, Tianjin Medical University Cancer Institute and Hospital, Key Laboratory of Cancer Prevention and Therapy, Tianjin Cancer Institute, National Clinical Research Center of Cancer, Tianjin, China.
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Blocking EZH2 methylation transferase activity by GSK126 decreases stem cell-like myeloma cells. Oncotarget 2018; 8:3396-3411. [PMID: 27926488 PMCID: PMC5356890 DOI: 10.18632/oncotarget.13773] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 11/21/2016] [Indexed: 01/14/2023] Open
Abstract
EZH2 is a critical epigenetic regulator that is deregulated in various types of cancers including multiple myeloma (MM). In the present study, we hypothesized that targeting EZH2 might induce apoptosis in myeloma cells including stem cell-like cells (CSCs). We investigated the effect of EZH2 inhibition on MM cells using a potent inhibitor (GSK126). The results showed that GSK126 effectively abrogated the methylated histone 3 (H3K27me3) level in MM.1S and LP1 cells, and inhibited the number of live cells and colony formation in soft agar of six MM cell lines. GSK126 induced massive apoptosis in MM.1S, LP1 and RPMI8226 cells. Progressive release of mitochondrial cytochrome c and AIF into the cytosol was detected in GSK126-treated MM cells. GSK126 treatment elicited caspase-3-dependent MCL-1 cleavage with accumulation of proapoptotic truncated MCL-1. These results suggested that GSK126 triggers the intrinsic mitochondrial apoptosis pathway. Enhanced apoptosis was observed in the combination of GSK126 with bortezomib. Using ALDH and side population (SP) assays to characterize CSCs, we found that GSK126 eliminated the stem-like myeloma cells by blocking the Wnt/β-catenin pathway. The in vivo anti-tumor effect of GSK126 was confirmed by using RPMI8226 cells in a xenograft mouse model. In conclusion, our findings suggest that EZH2 inactivation by GSK126 is effective in killing MM cells and CSCs as a single agent or in combination with bortezomib. Clinical trial of GSK126 in patients with MM may be warranted.
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38
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Alzrigat M, Párraga AA, Agarwal P, Zureigat H, Österborg A, Nahi H, Ma A, Jin J, Nilsson K, Öberg F, Kalushkova A, Jernberg-Wiklund H. EZH2 inhibition in multiple myeloma downregulates myeloma associated oncogenes and upregulates microRNAs with potential tumor suppressor functions. Oncotarget 2018; 8:10213-10224. [PMID: 28052011 PMCID: PMC5354653 DOI: 10.18632/oncotarget.14378] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Accepted: 12/15/2016] [Indexed: 12/21/2022] Open
Abstract
Multiple Myeloma (MM) is a plasma cell tumor localized to the bone marrow (BM). Despite the fact that current treatment strategies have improved patients' median survival time, MM remains incurable. Epigenetic aberrations are emerging as important players in tumorigenesis making them attractive targets for therapy in cancer including MM. Recently, we suggested the polycomb repressive complex 2 (PRC2) as a common denominator of gene silencing in MM and presented the PRC2 enzymatic subunit enhancer of zeste homolog 2 (EZH2) as a potential therapeutic target in MM. Here we further dissect the anti-myeloma mechanisms mediated by EZH2 inhibition and show that pharmacological inhibition of EZH2 reduces the expression of MM-associated oncogenes; IRF-4, XBP-1, PRDM1/BLIMP-1 and c-MYC. We show that EZH2 inhibition reactivates the expression of microRNAs with tumor suppressor functions predicted to target MM-associated oncogenes; primarily miR-125a-3p and miR-320c. ChIP analysis reveals that miR-125a-3p and miR-320c are targets of EZH2 and H3K27me3 in MM cell lines and primary cells. Our results further highlight that polycomb-mediated silencing in MM includes microRNAs with tumor suppressor activity. This novel role strengthens the oncogenic features of EZH2 and its potential as a therapeutic target in MM.
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Affiliation(s)
- Mohammad Alzrigat
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Alba Atienza Párraga
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Prasoon Agarwal
- Department of Laboratory Medicine, Division of Clinical Immunology, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Hadil Zureigat
- Department of Medicine, Faculty of Medicine, University of Jordan, Amman, Jordan
| | - Anders Österborg
- Department of Oncology-Pathology, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Hareth Nahi
- Department of Medicine, Unit of Hematology, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Anqi Ma
- Department of Pharmacological Sciences and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jian Jin
- Department of Pharmacological Sciences and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kenneth Nilsson
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Fredrik Öberg
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Antonia Kalushkova
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Helena Jernberg-Wiklund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
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39
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Alzrigat M, Párraga AA, Majumder MM, Ma A, Jin J, Österborg A, Nahi H, Nilsson K, Heckman CA, Öberg F, Kalushkova A, Jernberg-Wiklund H. The polycomb group protein BMI-1 inhibitor PTC-209 is a potent anti-myeloma agent alone or in combination with epigenetic inhibitors targeting EZH2 and the BET bromodomains. Oncotarget 2017; 8:103731-103743. [PMID: 29262596 PMCID: PMC5732762 DOI: 10.18632/oncotarget.21909] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 10/10/2017] [Indexed: 01/08/2023] Open
Abstract
Multiple myeloma (MM) is a tumor of plasmablasts/plasma cells (PCs) characterized by the expansion of malignant PCs with complex genetic aberrations in the bone marrow (BM). Recent reports, by us and others, have highlighted the polycomb group (PcG) proteins as potential targets for therapy in MM. The PcG protein BMI-1 of the polycomb repressive complex 1 (PRC1) has been reported to be overexpressed and to possess oncogenic functions in MM. Herein, we report on the anti-myeloma effects of the BMI-1 inhibitor PTC-209 and demonstrate that PTC-209 is a potent anti-myeloma agent in vitro using MM cell lines and primary MM cells. We show that PTC-209 reduces the viability of MM cells via induction of apoptosis and reveal that the anti-MM actions of PTC-209 are mediated by on-target effects i.e. downregulation of BMI-1 protein and the associated repressive histone mark H2AK119ub, leaving other PRC1 subunits such as CBX-7 and the catalytic subunit RING1B unaffected. Importantly, we demonstrate that PTC-209 exhibits synergistic and additive anti-myeloma activity when combined with other epigenetic inhibitors targeting EZH2 and BET bromodomains. Collectively, these data qualify BMI-1 as a candidate for targeted therapy in MM alone or in combinations with epigenetic inhibitors directed to PRC2/EZH2 or BET bromodomains.
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Affiliation(s)
- Mohammad Alzrigat
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Alba Atienza Párraga
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Muntasir Mamun Majumder
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Anqi Ma
- Departments of Pharmacological Sciences and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jian Jin
- Departments of Pharmacological Sciences and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Anders Österborg
- Department of Oncology-Pathology, Karolinska University Hospital, Solna, Stockholm, Sweden
| | - Hareth Nahi
- Department of Medicine, Unit of Hematology, Karolinska University Hospital, Huddinge, Stockholm, Sweden
| | - Kenneth Nilsson
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Caroline A Heckman
- Institute for Molecular Medicine Finland (FIMM), Helsinki Institute of Life Science, University of Helsinki, Helsinki, Finland
| | - Fredrik Öberg
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Antonia Kalushkova
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Helena Jernberg-Wiklund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
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Epigenetics in multiple myeloma: From mechanisms to therapy. Semin Cancer Biol 2017; 51:101-115. [PMID: 28962927 DOI: 10.1016/j.semcancer.2017.09.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 08/25/2017] [Accepted: 09/25/2017] [Indexed: 12/22/2022]
Abstract
Multiple myeloma (MM) is a tumor of antibody producing plasmablasts/plasma cells that resides within the bone marrow (BM). In addition to the well-established role of genetic lesions and tumor-microenvironment interactions in the development of MM, deregulated epigenetic mechanisms are emerging as important in MM pathogenesis. Recently, MM sequencing and expression projects have revealed that mutations and copy number variations as well as deregulation in the expression of epigenetic modifiers are characteristic features of MM. In the past decade, several studies have suggested epigenetic mechanisms via DNA methylation, histone modifications and non-coding RNAs as important contributing factors in MM with impacts on disease initiation, progression, clonal heterogeneity and response to treatment. Herein we review the present view and knowledge that has accumulated over the past decades on the role of epigenetics in MM, with focus on the interplay between epigenetic mechanisms and the potential use of epigenetic inhibitors as future treatment modalities for MM.
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Statin and Bisphosphonate Induce Starvation in Fast-Growing Cancer Cell Lines. Int J Mol Sci 2017; 18:ijms18091982. [PMID: 28914765 PMCID: PMC5618631 DOI: 10.3390/ijms18091982] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/04/2017] [Accepted: 09/11/2017] [Indexed: 12/11/2022] Open
Abstract
Statins and bisphosphonates are increasingly recognized as anti-cancer drugs, especially because of their cholesterol-lowering properties. However, these drugs act differently on various types of cancers. Thus, the aim of this study was to compare the effects of statins and bisphosphonates on the metabolism (NADP+/NADPH-relation) of highly proliferative tumor cell lines from different origins (PC-3 prostate carcinoma, MDA-MB-231 breast cancer, U-2 OS osteosarcoma) versus cells with a slower proliferation rate like MG-63 osteosarcoma cells. Global gene expression analysis revealed that after 6 days of treatment with pharmacologic doses of the statin simvastatin and of the bisphosphonate ibandronate, simvastatin regulated more than twice as many genes as ibandronate, including many genes associated with cell cycle progression. Upregulation of starvation-markers and a reduction of metabolism and associated NADPH production, an increase in autophagy, and a concomitant downregulation of H3K27 methylation was most significant in the fast-growing cancer cell lines. This study provides possible explanations for clinical observations indicating a higher sensitivity of rapidly proliferating tumors to statins and bisphosphonates.
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Cao J, Han X, Qi X, Jin X, Li X. TUG1 promotes osteosarcoma tumorigenesis by upregulating EZH2 expression via miR-144-3p. Int J Oncol 2017; 51:1115-1123. [PMID: 28902349 PMCID: PMC5592872 DOI: 10.3892/ijo.2017.4110] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 08/01/2017] [Indexed: 01/18/2023] Open
Abstract
lncRNA-TUG1 (Taurine upregulated 1) is up regulated and highly correlated with poor prognosis and disease status in osteosarcoma. TUG1 knockdown inhibits osteosarcoma cell proliferation, migration and invasion, and promotes apoptosis. However, its mechanism of action has not been well addressed. Growing evidence documented that lncRNA works as competing endogenous (ce)RNAs to modulate the expression and biological functions of miRNA. As a putative combining target of TUG1, miR-144-3p has been associated with the progress of osteosarcoma. To verify whether TUG1 functions through regulating miR-144-3p, the expression levels of TUG1 and miR-144-3p in osteosarcoma tissues and cell lines were determined. TUG1 was upregulated in osteosarcoma tissues and cell lines, and negatively correlated with miR-144-3p. TUG1 knockdown induced miR-144-3p expression in MG63 and U2OS cell lines. Results from dual luciferase reporter assay, RNA-binding protein immuno precipitation (RIP) and applied biotin-avidin pull-down system confirmed TUG1 regulated miR-144-3p expression through direct binding. EZH2, a verified target of miR-144-3p was upregulated in osteosarcoma tissues and negatively correlated with miR-144-3p. EZH2 was negatively regulated by miR-144-3p and positively regulated by TUG1. Gain-and loss-of-function experiments were performed to analyze the role of TUG1, miR-144-3p and EZH2 in the migration and EMT of osteosarcoma cells. EZH2 overexpression partly abolished TUG1 knockdown or miR-144-3p overexpression induced inhibition of migration and EMT in osteosarcoma cells. In addition, TUG1 knockdown represses the activation of Wnt/β-catenin pathway, which was reversed by EZH2 over expression. The activator of Wnt/β-catenin pathway LiCl could partially block the TUG1-knockdown induced osteosarcoma cell migration and EMT inhibition. In conclusion, our results showed that TUG1 plays an important role in osteosarcoma development through miRNA-144-3p/EZH2/Wnt/β-catenin pathway.
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Affiliation(s)
- Jiaqing Cao
- Department of Orthopedic Surgery, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Xinyou Han
- Department of Orthopedic Surgery, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Xin Qi
- Department of Orthopedic Surgery, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Xiangyun Jin
- Department of Orthopedic Surgery, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Xiaolin Li
- Department of Orthopedic Surgery, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200233, P.R. China
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Sandow JJ, Infusini G, Holik AZ, Brumatti G, Averink TV, Ekert PG, Webb AI. Quantitative proteomic analysis of EZH2 inhibition in acute myeloid leukemia reveals the targets and pathways that precede the induction of cell death. Proteomics Clin Appl 2017; 11. [DOI: 10.1002/prca.201700013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 04/13/2017] [Accepted: 04/24/2017] [Indexed: 01/06/2023]
Affiliation(s)
- Jarrod J. Sandow
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology; The University of Melbourne; Parkville Australia
| | - Giuseppe Infusini
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology; The University of Melbourne; Parkville Australia
| | - Aliaksei Z. Holik
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology; The University of Melbourne; Parkville Australia
| | - Gabriela Brumatti
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology; The University of Melbourne; Parkville Australia
| | - Tessa V. Averink
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology; The University of Melbourne; Parkville Australia
- Murdoch Children's Research Institute; Royal Children's Hospital; Parkville Australia
- Vrije Universiteit; Amsterdam
| | - Paul G. Ekert
- Murdoch Children's Research Institute; Royal Children's Hospital; Parkville Australia
| | - Andrew I. Webb
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia; Department of Medical Biology; The University of Melbourne; Parkville Australia
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Rizq O, Mimura N, Oshima M, Saraya A, Koide S, Kato Y, Aoyama K, Nakajima-Takagi Y, Wang C, Chiba T, Ma A, Jin J, Iseki T, Nakaseko C, Iwama A. Dual Inhibition of EZH2 and EZH1 Sensitizes PRC2-Dependent Tumors to Proteasome Inhibition. Clin Cancer Res 2017; 23:4817-4830. [PMID: 28490465 DOI: 10.1158/1078-0432.ccr-16-2735] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 04/08/2017] [Accepted: 05/09/2017] [Indexed: 12/17/2022]
Abstract
Purpose: EZH2 and EZH1, the catalytic components of polycomb repressive complex 2 (PRC2), trigger trimethylation of H3K27 (H3K27me3) to repress the transcription of target genes and are implicated in the pathogenesis of various cancers including multiple myeloma and prostate cancer. Here, we investigated the preclinical effects of UNC1999, a dual inhibitor of EZH2 and EZH1, in combination with proteasome inhibitors on multiple myeloma and prostate cancer.Experimental Design:In vitro and in vivo efficacy of UNC1999 and the combination with proteasome inhibitors was evaluated in multiple myeloma cell lines, primary patient cells, and in a xenograft model. RNA-seq and ChIP-seq were performed to uncover the targets of UNC1999 in multiple myeloma. The efficacy of the combination therapy was validated in prostate cancer cell lines.Results: Proteasome inhibitors repressed EZH2 transcription via abrogation of the RB-E2F pathway, thereby sensitizing EZH2-dependent multiple myeloma cells to EZH1 inhibition by UNC1999. Correspondingly, combination of proteasome inhibitors with UNC1999, but not with an EZH2-specific inhibitor, induced synergistic antimyeloma activity in vitro Bortezomib combined with UNC1999 remarkably inhibited the growth of myeloma cells in vivo Comprehensive analyses revealed several direct targets of UNC1999 including the tumor suppressor gene NR4A1 Derepression of NR4A1 by UNC1999 resulted in suppression of MYC, which was enhanced by the combination with bortezomib, suggesting the cooperative blockade of PRC2 function. Notably, this combination also exhibited strong synergy in prostate cancer cells.Conclusions: Our results identify dual inhibition of EZH2 and EZH1 together with proteasome inhibition as a promising epigenetics-based therapy for PRC2-dependent cancers. Clin Cancer Res; 23(16); 4817-30. ©2017 AACR.
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Affiliation(s)
- Ola Rizq
- Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Naoya Mimura
- Department of Transfusion Medicine and Cell Therapy, Chiba University Hospital, Chiba, Japan.
| | - Motohiko Oshima
- Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Atsunori Saraya
- Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Shuhei Koide
- Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yuko Kato
- Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Kazumasa Aoyama
- Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Yaeko Nakajima-Takagi
- Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Changshan Wang
- Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.,College of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Tetsuhiro Chiba
- Department of Gastroenterology and Nephrology, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Anqi Ma
- Departments of Pharmacological Sciences and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Jian Jin
- Departments of Pharmacological Sciences and Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Tohru Iseki
- Department of Transfusion Medicine and Cell Therapy, Chiba University Hospital, Chiba, Japan
| | - Chiaki Nakaseko
- Department of Hematology, Chiba University Hospital, Chiba, Japan
| | - Atsushi Iwama
- Department of Cellular and Molecular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
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45
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Alzrigat M, Jernberg-Wiklund H. The miR-125a and miR-320c are potential tumor suppressor microRNAs epigenetically silenced by the polycomb repressive complex 2 in multiple myeloma. RNA & DISEASE 2017; 4. [PMID: 28664185 PMCID: PMC5485917 DOI: 10.14800/rd.1529] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We have previously presented the histone methyltransferase enhancer of zeste homolog 2 (EZH2) of the polycomb repressive complex 2 (PRC2) as a potential therapeutic target in Multiple Myeloma (MM). In a recent article in Oncotarget by Alzrigat. et al. 2017, we have reported on the novel finding that EZH2 inhibition using the highly selective inhibitor of EZH2 enzymatic activity, UNC1999, reactivated the expression of microRNA genes previously reported to be underexpressed in MM. Among these, we have identified miR-125a-3p and miR-320c as potential tumor suppressor microRNAs as they were predicted to target MM-associated oncogenes; IRF-4, XBP-1 and BLIMP-1. We also found EZH2 inhibition to reactivate the expression of miR-494, a previously reported regulator of the c-MYC oncogene. In addition, we could report that EZH2 inhibition downregulated the expression of a few well described oncogenic microRNAs in MM. The data from our recent article are here highlighted as it shed a new light onto the oncogenic function of the PRC2 in MM. These data further strengthen the notion that the PRC2 complex may be of potential therapeutic interest.
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Affiliation(s)
- Mohammad Alzrigat
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, SE-751 85, Sweden
| | - Helena Jernberg-Wiklund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, SE-751 85, Sweden
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46
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Overexpression of EZH2 in multiple myeloma is associated with poor prognosis and dysregulation of cell cycle control. Blood Cancer J 2017; 7:e549. [PMID: 28362441 PMCID: PMC5380911 DOI: 10.1038/bcj.2017.27] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 02/23/2017] [Indexed: 12/31/2022] Open
Abstract
Myeloma is heterogeneous at the molecular level with subgroups of patients characterised by features of epigenetic dysregulation. Outcomes for myeloma patients have improved over the past few decades except for molecularly defined high-risk patients who continue to do badly. Novel therapeutic approaches are, therefore, required. A growing number of epigenetic inhibitors are now available including EZH2 inhibitors that are in early-stage clinical trials for treatment of haematological and other cancers with EZH2 mutations or in which overexpression has been correlated with poor outcomes. For the first time, we have identified and validated a robust and independent deleterious effect of high EZH2 expression on outcomes in myeloma patients. Using two chemically distinct small-molecule inhibitors, we demonstrate a reduction in myeloma cell proliferation with EZH2 inhibition, which leads to cell cycle arrest followed by apoptosis. This is mediated via upregulation of cyclin-dependent kinase inhibitors associated with removal of the inhibitory H3K27me3 mark at their gene loci. Our results suggest that EZH2 inhibition may be a potential therapeutic strategy for the treatment of myeloma and should be investigated in clinical studies.
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47
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Issa ME, Takhsha FS, Chirumamilla CS, Perez-Novo C, Vanden Berghe W, Cuendet M. Epigenetic strategies to reverse drug resistance in heterogeneous multiple myeloma. Clin Epigenetics 2017; 9:17. [PMID: 28203307 PMCID: PMC5303245 DOI: 10.1186/s13148-017-0319-5] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Accepted: 01/26/2017] [Indexed: 12/31/2022] Open
Abstract
Multiple myeloma (MM) is a hematological malignancy, which remains incurable because most patients eventually relapse or become refractory to current treatments. Due to heterogeneity within the cancer cell microenvironment, cancer cell populations employ a dynamic survival strategy to chemotherapeutic treatments, which frequently results in a rapid acquisition of therapy resistance. Besides resistance-conferring genetic alterations within a tumor cell population selected during drug treatment, recent findings also reveal non-mutational mechanisms of drug resistance, involving a small population of "cancer stem cells" (CSCs) which are intrinsically more refractory to the effects of a variety of anticancer drugs. Other studies have implicated epigenetic mechanisms in reversible drug tolerance to protect the population from eradication by potentially lethal exposures, suggesting that acquired drug resistance does not necessarily require a stable heritable genetic alteration. Clonal evolution of MM cells and the bone marrow microenvironment changes contribute to drug resistance. MM-CSCs may not be a static population and survive as phenotypically and functionally different cell types via the transition between stem-like and non-stem-like states in local microenvironments, as observed in other types of cancers. Targeting MM-CSCs is clinically relevant, and different approaches have been suggested to target molecular, metabolic and epigenetic signatures, and the self-renewal signaling characteristic of MM CSC-like cells. Here, we summarize epigenetic strategies to reverse drug resistance in heterogeneous multiple myeloma.
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Affiliation(s)
- Mark E Issa
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland
| | - Farnaz Sedigheh Takhsha
- Laboratory of Protein Science, Proteomics and Epigenetic Signaling (PPES), Department of Biomedical sciences, University of Antwerp, Campus Drie Eiken, Universiteitsplein 1, Wilrijk, Belgium
| | - Chandra Sekhar Chirumamilla
- Laboratory of Protein Science, Proteomics and Epigenetic Signaling (PPES), Department of Biomedical sciences, University of Antwerp, Campus Drie Eiken, Universiteitsplein 1, Wilrijk, Belgium
| | - Claudina Perez-Novo
- Laboratory of Protein Science, Proteomics and Epigenetic Signaling (PPES), Department of Biomedical sciences, University of Antwerp, Campus Drie Eiken, Universiteitsplein 1, Wilrijk, Belgium
| | - Wim Vanden Berghe
- Laboratory of Protein Science, Proteomics and Epigenetic Signaling (PPES), Department of Biomedical sciences, University of Antwerp, Campus Drie Eiken, Universiteitsplein 1, Wilrijk, Belgium
| | - Muriel Cuendet
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, CH-1211 Geneva 4, Switzerland
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48
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Agarwal P, Alzrigat M, Párraga AA, Enroth S, Singh U, Ungerstedt J, Österborg A, Brown PJ, Ma A, Jin J, Nilsson K, Öberg F, Kalushkova A, Jernberg-Wiklund H. Genome-wide profiling of histone H3 lysine 27 and lysine 4 trimethylation in multiple myeloma reveals the importance of Polycomb gene targeting and highlights EZH2 as a potential therapeutic target. Oncotarget 2017; 7:6809-23. [PMID: 26755663 PMCID: PMC4872750 DOI: 10.18632/oncotarget.6843] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 12/29/2015] [Indexed: 02/02/2023] Open
Abstract
Multiple myeloma (MM) is a malignancy of the antibody-producing plasma cells. MM is a highly heterogeneous disease, which has hampered the identification of a common underlying mechanism for disease establishment as well as the development of targeted therapy. Here we present the first genome-wide profiling of histone H3 lysine 27 and lysine 4 trimethylation in MM patient samples, defining a common set of active H3K4me3-enriched genes and silent genes marked by H3K27me3 (H3K27me3 alone or bivalent) unique to primary MM cells, when compared to normal bone marrow plasma cells. Using this epigenome profile, we found increased silencing of H3K27me3 targets in MM patients at advanced stages of the disease, and the expression pattern of H3K27me3-marked genes correlated with poor patient survival. We also demonstrated that pharmacological inhibition of EZH2 had anti-myeloma effects in both MM cell lines and CD138+ MM patient cells. In addition, EZH2 inhibition decreased the global H3K27 methylation and induced apoptosis. Taken together, these data suggest an important role for the Polycomb repressive complex 2 (PRC2) in MM, and highlights the PRC2 component EZH2 as a potential therapeutic target in MM.
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Affiliation(s)
- Prasoon Agarwal
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Mohammad Alzrigat
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Alba Atienza Párraga
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Stefan Enroth
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Umashankar Singh
- Department of Biological Engineering, Indian Institute of Technology, Gandhinagar, Gujarat, India
| | - Johanna Ungerstedt
- Department of Medicine, Center for Hematology and Regenerative Medicine (HERM), Karolinska Institute Huddinge, Stockholm, Sweden
| | - Anders Österborg
- Department of Oncology-Pathology, Karolinska University Hospital Solna, Stockholm, Sweden
| | - Peter J Brown
- Structural Genomics Consortium, University of Toronto, Toronto, Ontario, Canada
| | - Anqi Ma
- Departments of Structural and Chemical Biology, Oncological Sciences, and Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jian Jin
- Departments of Structural and Chemical Biology, Oncological Sciences, and Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kenneth Nilsson
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Fredrik Öberg
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Antonia Kalushkova
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Helena Jernberg-Wiklund
- Science for Life Laboratory, Department of Immunology, Genetics and Pathology, Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
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49
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Herviou L, Cavalli G, Cartron G, Klein B, Moreaux J. EZH2 in normal hematopoiesis and hematological malignancies. Oncotarget 2016; 7:2284-96. [PMID: 26497210 PMCID: PMC4823035 DOI: 10.18632/oncotarget.6198] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 10/14/2015] [Indexed: 12/20/2022] Open
Abstract
Enhancer of zeste homolog 2 (EZH2), the catalytic subunit of the Polycomb repressive complex 2, inhibits gene expression through methylation on lysine 27 of histone H3. EZH2 regulates normal hematopoietic stem cell self-renewal and differentiation. EZH2 also controls normal B cell differentiation. EZH2 deregulation has been described in many cancer types including hematological malignancies. Specific small molecules have been recently developed to exploit the oncogenic addiction of tumor cells to EZH2. Their therapeutic potential is currently under evaluation. This review summarizes the roles of EZH2 in normal and pathologic hematological processes and recent advances in the development of EZH2 inhibitors for the personalized treatment of patients with hematological malignancies.
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Affiliation(s)
- Laurie Herviou
- Institute of Human Genetics, CNRS UPR1142, Montpellier, France
| | - Giacomo Cavalli
- Institute of Human Genetics, CNRS UPR1142, Montpellier, France
| | - Guillaume Cartron
- University of Montpellier 1, UFR de Médecine, Montpellier, France.,Department of Clinical Hematology, CHU Montpellier, Montpellier, France
| | - Bernard Klein
- Department of Biological Hematology, CHU Montpellier, Montpellier, France.,Institute of Human Genetics, CNRS UPR1142, Montpellier, France.,University of Montpellier 1, UFR de Médecine, Montpellier, France
| | - Jérôme Moreaux
- Department of Biological Hematology, CHU Montpellier, Montpellier, France.,Institute of Human Genetics, CNRS UPR1142, Montpellier, France.,University of Montpellier 1, UFR de Médecine, Montpellier, France
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50
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Pan YM, Wang CG, Zhu M, Xing R, Cui JT, Li WM, Yu DD, Wang SB, Zhu W, Ye YJ, Wu Y, Wang S, Lu YY. STAT3 signaling drives EZH2 transcriptional activation and mediates poor prognosis in gastric cancer. Mol Cancer 2016; 15:79. [PMID: 27938379 PMCID: PMC5148878 DOI: 10.1186/s12943-016-0561-z] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 11/23/2016] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND STAT3 signaling plays the pivotal role in tumorigenesis through EZH2 epigenetic modification, which enhanced STAT3 activity by increased tyrosine phosphorylation of STAT3. Here, another possible feedback mechanism and clinical significance of EZH2 and STAT3 were investigated in gastric cancer (GC). METHODS STAT3, p-STAT3 (Tyr 705) and EZH2 expression were examined in 63 GC specimens with matched normal tissues by IHC staining. EZH2 and STAT3 were also identified in five GC cell lines using RT-PCR and western blot analyses. p-STAT3 protein was detected by western blotting. In order to investigate whether EZH2 expression was directly regulated by STAT3, EZH2 expression was further detected using siRNA for STAT3 or IL-6 stimulation, with dual luciferase reporter analyses, electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP) assays. The clinical significance of STAT3, p-STAT3 and EZH2 expression was evaluated by multi-factor COX regression and Kaplan-Meier analyses. RESULTS Hyper-activation of STAT3, p-STAT3 and EZH2 expression were observed in GC cells and tissues. STAT3 signaling was correlated with EZH2 expression in GC (R = 0.373, P = 0.003), which was consistent with our data showing that STAT3 as the transcriptional factor enhanced EZH2 transcriptional activity by binding the relative promoter region (-214 ~ -206). STAT3 was an independent signature for poor survival (P = 0.002). Patients with STAT3+/EZH2+ or p-STAT3+/EZH2+ had a worse outcome than others (P < 0.001); Besides, high levels of STAT3 and EZH2 was associated with advanced TNM staging (P = 0.017). Moreover, treatment with a combination of siSTAT3 and EZH2-specific inhibitor, 3-deazaneplanocin A (DZNEP), increased the apoptotic ratio of cells. It is benefit for targeting STAT3-EZH2 interplay in GC treatment. CONCLUSIONS Our results indicate that STAT3 status mediated EZH2 upregulation, associated with advanced TNM stage and poor prognosis, suggesting that combination with knockdown of STAT3 and EZH2 inhibitor might be a novel therapy in GC treatment. Collectively, STAT3, p-STAT3 and EZH2 expression were provided for the precision medicine in GC patients.
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Affiliation(s)
- Yuan-Ming Pan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute , 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Cheng-Gang Wang
- Department of Gastroenterology Surgery, Surgical Oncology Laboratory, People's Hospital, Peking University, Beijing, 100044, China.,Department of Cardiology, Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Min Zhu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute , 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Rui Xing
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute , 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Jian-Tao Cui
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute , 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - Wen-Mei Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute , 52 Fucheng Road, Haidian District, Beijing, 100142, China
| | - De-Dong Yu
- Department of Oncology/Institute for Cancer Research, Baotou Central Hospital, Inner Mongolia, 014040, China
| | - Shu-Bin Wang
- Department of Oncology/Institute for Cancer Research, Baotou Central Hospital, Inner Mongolia, 014040, China
| | - Wei Zhu
- Department of Oncology/Institute for Cancer Research, Baotou Central Hospital, Inner Mongolia, 014040, China
| | - Ying-Jiang Ye
- Department of Gastroenterology Surgery, Surgical Oncology Laboratory, People's Hospital, Peking University, Beijing, 100044, China
| | - Yun Wu
- Department of Oncology/Institute for Cancer Research, Baotou Central Hospital, Inner Mongolia, 014040, China. .,Department of Oncology/Institute for Cancer Research, Baotou Central Hospital, Baotou, 014040, People's Republic of China.
| | - Shan Wang
- Department of Gastroenterology Surgery, Surgical Oncology Laboratory, People's Hospital, Peking University, Beijing, 100044, China. .,Department of Gastroenterological Surgery, Surgical Oncology Laboratory, People's Hospital, Beijing University, No. 11, South Xizhimen Street, Beijing, 100044, People's Republic of China.
| | - You-Yong Lu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Laboratory of Molecular Oncology, Peking University Cancer Hospital & Institute , 52 Fucheng Road, Haidian District, Beijing, 100142, China.
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