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Liu J, Zhang H. Zinc Finger and BTB Domain-Containing 20: A Newly Emerging Player in Pathogenesis and Development of Human Cancers. Biomolecules 2024; 14:192. [PMID: 38397429 PMCID: PMC10887282 DOI: 10.3390/biom14020192] [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: 01/12/2024] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
Zinc finger and BTB domain-containing 20 (ZBTB20), which was initially identified in human dendritic cells, belongs to a family of transcription factors (TFs) with an N-terminal BTB domain and one or more C-terminal DNA-binding zinc finger domains. Under physiological conditions, ZBTB20 acts as a transcriptional repressor in cellular development and differentiation, metabolism, and innate immunity. Interestingly, multiple lines of evidence from mice and human systems have revealed the importance of ZBTB20 in the pathogenesis and development of cancers. ZBTB20 is not only a hotspot of genetic variation or fusion in many types of human cancers, but also a key TF or intermediator involving in the dysregulation of cancer cells. Given the diverse functions of ZBTB20 in both health and disease, we herein summarize the structure and physiological roles of ZBTB20, with an emphasis on the latest findings on tumorigenesis and cancer progression.
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Affiliation(s)
| | - Han Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming 650118, China;
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2
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Ct Chow C, Kobayashi M, Kambe G, Harada H. ZBTB2 is recruited to a specific subset of HIF-1 target loci to facilitate full gene expression under hypoxia. J Mol Biol 2023:168162. [PMID: 37257772 DOI: 10.1016/j.jmb.2023.168162] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/18/2023] [Accepted: 05/23/2023] [Indexed: 06/02/2023]
Abstract
The cellular response to hypoxia is mainly governed by a transcription factor, hypoxia-inducible factor 1 (HIF-1). Although upregulation of HIF-1 target genes has been hypothesized to require interaction of HIF-1 with other coactivators, much remains to be elucidated regarding the underlying mechanisms. Here, we demonstrate that zinc finger and BTB domain-containing protein 2 (ZBTB2) enhances the expression of certain HIF-1 target genes under hypoxia. ChIP-Seq analysis showed that there is a subset of HIF-1 target genes with overlapping HIF-1 and ZBTB2 peaks. Examination of a representative gene, EGFR antisense RNA 1 (EGFR-AS1), showed that HIF-1 binding to the consensus hypoxia-responsive element (HRE) sequence resulted in the recruitment of ZBTB2 to the gene locus and increased p300-mediated histone acetylation, leading to enhanced gene expression under hypoxia. In contrast, expression of HIF-1 target genes lacking ZBTB2 peaks, such as carbonic anhydrase 9 (CA9), was not upregulated by ZBTB2. These findings demonstrate that ZBTB2 is a novel factor that can be recruited to the vicinity of HREs on a subset of HIF-1 target gene loci, and is required for their full expression under hypoxia.
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Affiliation(s)
- Christalle Ct Chow
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Minoru Kobayashi
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan; Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Gouki Kambe
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan
| | - Hiroshi Harada
- Laboratory of Cancer Cell Biology, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan; Department of Genome Repair Dynamics, Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto 606-8501, Japan.
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3
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Jeong JH, Park SH, Kim H, Nam HY, Kim SH, Jeong M, Kong MJ, Son J, Jeong JE, Song JH, Kim SW, Choi KC. ZBTB7A suppresses glioblastoma tumorigenesis through the transcriptional repression of EPB41L5. Exp Mol Med 2023; 55:43-54. [PMID: 36596853 PMCID: PMC9898510 DOI: 10.1038/s12276-022-00908-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/26/2022] [Accepted: 11/02/2022] [Indexed: 01/05/2023] Open
Abstract
Glioblastoma multiforme (GBM), the most aggressive and malignant glioma, has a poor prognosis. Although patients with GBM are treated with surgery, chemotherapy, and radiation therapy, GBM is highly resistant to treatment, making it difficult and expensive to treat. In this study, we analyzed the Gene Expression Profiling Interactive Analysis dataset, the Cancer Genome Atlas dataset, and Gene Expression Omnibus array data. ZBTB7A (also called FBI1/POKEMON/LRF) was found to be highly expressed in low-grade glioma but significantly downregulated in patients with GBM. ZBTB7A is a transcription factor that plays an important role in many developmental stages, including cell proliferation. The activation of epithelial-mesenchymal transition (EMT) is a key process in cancer progression and metastasis. Erythrocyte membrane protein band 4.1 like 5 (EPB41L5) is an essential protein for EMT progression and metastasis in various types of cancer. We found that ZBTB7A depletion in U87 cells induced GBM progression and metastasis. Based on RNA sequencing data, ZBTB7A directly binds to the promoter of the EPB41L5 gene, reducing its expression and inhibiting GBM progression. We demonstrated that ZBTB7A dramatically inhibits GBM tumor growth through transcriptional repression of EPB41L5. Thus, both ZBTB7A and EPB41L5 may be potential biomarkers and novel therapeutic targets for GBM treatment. Overall, we discovered the role of a novel tumor suppressor that directly inhibits GBM progression (ZBTB7A) and identified EPB41L5 as a therapeutic target protein for patients with GBM.
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Affiliation(s)
- Ji-Hoon Jeong
- grid.413967.e0000 0001 0842 2126Department of Biomedical Sciences, AAMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Seung-Ho Park
- grid.413967.e0000 0001 0842 2126Department of Biomedical Sciences, AAMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hyunhee Kim
- grid.413967.e0000 0001 0842 2126Department of Biomedical Sciences, AAMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hae Yun Nam
- grid.413967.e0000 0001 0842 2126Department of Biochemistry and Molecular Biology, AMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Sung-Hak Kim
- grid.14005.300000 0001 0356 9399Department of Animal Science, Chonnam National University, Gwangju, Korea
| | - Minseok Jeong
- grid.413967.e0000 0001 0842 2126Department of Biomedical Sciences, AAMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Min-Jeong Kong
- grid.413967.e0000 0001 0842 2126Department of Biomedical Sciences, AAMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jihyun Son
- grid.413967.e0000 0001 0842 2126Department of Biomedical Sciences, AAMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Ji-Eun Jeong
- grid.413967.e0000 0001 0842 2126Department of Biomedical Sciences, AAMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Ji-Hye Song
- grid.418974.70000 0001 0573 0246Korea Food Research Institute, Wanju-gun, 55365 Korea
| | - Seong Who Kim
- Department of Biochemistry and Molecular Biology, AMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Kyung-Chul Choi
- Department of Biomedical Sciences, AAMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
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4
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Hu H, Sun N, Du H, He Y, Pan K, Liu X, Lu X, Wei J, Liao M, Duan C. Mouse promyelocytic leukemia zinc finger protein (PLZF) regulates hepatic lipid and glucose homeostasis dependent on SIRT1. Front Pharmacol 2022; 13:1039726. [PMID: 36438786 PMCID: PMC9684722 DOI: 10.3389/fphar.2022.1039726] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 10/21/2022] [Indexed: 11/11/2022] Open
Abstract
Previous studies have demonstrated that promyelocytic leukemia zinc finger protein (PLZF) promotes the expression of gluconeogenic genes and hepatic glucose output, which leads to hyperglycemia. However, the role played by PLZF in regulating lipid metabolism is not known. In this study, we aimed to examine the function of PLZF in regulating hepatic lipid and glucose homeostasis and the underlying mechanisms. The expression of PLZF was determined in different mouse models with regard to non-alcoholic fatty liver disease (NAFLD). In the next step, adenoviruses that express PLZF (Ad-PLZF) or PLZF-specific shRNA (Ad-shPLZF) were utilized to alter PLZF expression in mouse livers and in primary hepatocytes. For the phenotype of the fatty liver, histologic and biochemical analyses of hepatic triglyceride (TG), serum TG and cholesterol levels were carried out. The underlying molecular mechanism for the regulation of lipid metabolism by PLZF was further explored using luciferase reporter gene assay and ChIP analysis. The results demonstrated that PLZF expression was upregulated in livers derived from ob/ob, db/db and diet-induced obesity (DIO) mice. Liver PLZF-overexpressing C57BL/6J mice showed fatty liver phenotype, liver inflammation, impaired glucose tolerance and insulin sensitivity. On the other hand, hepatic PLZF knockdown in db/db and DIO mice alleviated hepatic steatosis. Of note, we found that PLZF activates SREBP-1c gene transcription through binding directly to the promoter fragment of this gene, which would induce a repressor-to-activator conversion depending on its interaction with SIRT1 in the role played by PLZF in the transcription process through deacetylation. Thus, PLZF is identified as an essential regulator of hepatic lipid and glucose metabolism, where the modulation of its liver expression could open up a therapeutic path for treating NAFLD.
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Affiliation(s)
- Huiling Hu
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Nannan Sun
- Department of Obstetrics and Gynecology, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Haiyan Du
- Department of Hepatology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Yuqing He
- Translational Medicine Research Center, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Kunyi Pan
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiuli Liu
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiaoxia Lu
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jie Wei
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- *Correspondence: Jie Wei, ; Mianmian Liao, ; Chaohui Duan,
| | - Mianmian Liao
- Department of Hepatology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
- *Correspondence: Jie Wei, ; Mianmian Liao, ; Chaohui Duan,
| | - Chaohui Duan
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- *Correspondence: Jie Wei, ; Mianmian Liao, ; Chaohui Duan,
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5
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Morgan RC, Kee BL. Genomic and Transcriptional Mechanisms Governing Innate-like T Lymphocyte Development. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:208-216. [PMID: 35821098 DOI: 10.4049/jimmunol.2200141] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/18/2022] [Indexed: 12/16/2022]
Abstract
Innate-like lymphocytes are a subset of lymphoid cells that function as a first line of defense against microbial infection. These cells are activated by proinflammatory cytokines or broadly expressed receptors and are able to rapidly perform their effector functions owing to a uniquely primed chromatin state that is acquired as a part of their developmental program. These cells function in many organs to protect against disease, but they release cytokines and cytotoxic mediators that can also lead to severe tissue pathologies. Therefore, harnessing the capabilities of these cells for therapeutic interventions will require a deep understanding of how these cells develop and regulate their effector functions. In this review we discuss recent advances in the identification of the transcription factors and the genomic regions that guide the development and function of invariant NKT cells and we highlight related mechanisms in other innate-like lymphocytes.
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Affiliation(s)
- Roxroy C Morgan
- Committee on Genetics, Genomics and Systems Biology, University of Chicago, Chicago, IL; and
| | - Barbara L Kee
- Cancer Biology and Immunology, Department of Pathology, University of Chicago, Chicago, IL
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6
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Si S, Zhang M, Hu Y, Wu C, Yang Y, Luo S, Xiao X. BrcuHAC1 is a histone acetyltransferase that affects bolting development in Chinese flowering cabbage. J Genet 2021. [DOI: 10.1007/s12041-021-01303-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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7
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Klibi J, Joseph C, Delord M, Teissandier A, Lucas B, Chomienne C, Toubert A, Bourc'his D, Guidez F, Benlagha K. PLZF Acetylation Levels Regulate NKT Cell Differentiation. THE JOURNAL OF IMMUNOLOGY 2021; 207:809-823. [PMID: 34282003 DOI: 10.4049/jimmunol.2001444] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 05/23/2021] [Indexed: 12/13/2022]
Abstract
The transcription factor promyelocytic leukemia zinc finger (PLZF) is encoded by the BTB domain-containing 16 (Zbtb16) gene. Its repressor function regulates specific transcriptional programs. During the development of invariant NKT cells, PLZF is expressed and directs their effector program, but the detailed mechanisms underlying PLZF regulation of multistage NKT cell developmental program are not well understood. This study investigated the role of acetylation-induced PLZF activation on NKT cell development by analyzing mice expressing a mutant form of PLZF mimicking constitutive acetylation (PLZFON) mice. NKT populations in PLZFON mice were reduced in proportion and numbers of cells, and the cells present were blocked at the transition from developmental stage 1 to stage 2. NKT cell subset differentiation was also altered, with T-bet+ NKT1 and RORγt+ NKT17 subsets dramatically reduced and the emergence of a T-bet-RORγt- NKT cell subset with features of cells in early developmental stages rather than mature NKT2 cells. Preliminary analysis of DNA methylation patterns suggested that activated PLZF acts on the DNA methylation signature to regulate NKT cells' entry into the early stages of development while repressing maturation. In wild-type NKT cells, deacetylation of PLZF is possible, allowing subsequent NKT cell differentiation. Interestingly, development of other innate lymphoid and myeloid cells that are dependent on PLZF for their generation is not altered in PLZFON mice, highlighting lineage-specific regulation. Overall, we propose that specific epigenetic control of PLZF through acetylation levels is required to regulate normal NKT cell differentiation.
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Affiliation(s)
- Jihene Klibi
- Institut de Recherche Saint-Louis, Université Paris Diderot, Sorbonne Paris Cité, INSERM U1160, Paris, France;
| | - Claudine Joseph
- Institut de Recherche Saint-Louis, Université Paris Diderot, Sorbonne Paris Cité, INSERM U1160, Paris, France
| | - Marc Delord
- Plateforme de Bioinformatique et Biostatistique, Institut de Recherche Saint-Louis, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Aurelie Teissandier
- Génétique et Biologie du Développement, Institut Curie, CNRS UMR 3215/INSERM U934, Paris, Cedex 05, France
| | - Bruno Lucas
- Institut Cochin, Université Paris Descartes, CNRS UMR 8104, INSERM U1016, Paris, France; and
| | - Christine Chomienne
- Institut de Recherche Saint-Louis, Université de Paris, UMRS 1131, INSERM, Paris, France
| | - Antoine Toubert
- Institut de Recherche Saint-Louis, Université Paris Diderot, Sorbonne Paris Cité, INSERM U1160, Paris, France
| | - Deborah Bourc'his
- Génétique et Biologie du Développement, Institut Curie, CNRS UMR 3215/INSERM U934, Paris, Cedex 05, France
| | - Fabien Guidez
- Institut de Recherche Saint-Louis, Université de Paris, UMRS 1131, INSERM, Paris, France
| | - Kamel Benlagha
- Institut de Recherche Saint-Louis, Université Paris Diderot, Sorbonne Paris Cité, INSERM U1160, Paris, France;
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8
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Ren R, Hardikar S, Horton JR, Lu Y, Zeng Y, Singh AK, Lin K, Coletta LD, Shen J, Lin Kong CS, Hashimoto H, Zhang X, Chen T, Cheng X. Structural basis of specific DNA binding by the transcription factor ZBTB24. Nucleic Acids Res 2019; 47:8388-8398. [PMID: 31226215 PMCID: PMC6895263 DOI: 10.1093/nar/gkz557] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 06/07/2019] [Accepted: 06/13/2019] [Indexed: 01/07/2023] Open
Abstract
ZBTB24, encoding a protein of the ZBTB family of transcriptional regulators, is one of four known genes—the other three being DNMT3B, CDCA7 and HELLS—that are mutated in immunodeficiency, centromeric instability and facial anomalies (ICF) syndrome, a genetic disorder characterized by DNA hypomethylation and antibody deficiency. The molecular mechanisms by which ZBTB24 regulates gene expression and the biological functions of ZBTB24 are poorly understood. Here, we identified a 12-bp consensus sequence [CT(G/T)CCAGGACCT] occupied by ZBTB24 in the mouse genome. The sequence is present at multiple loci, including the Cdca7 promoter region, and ZBTB24 binding is mostly associated with gene activation. Crystallography and DNA-binding data revealed that the last four of the eight zinc fingers (ZFs) (i.e. ZF5-8) in ZBTB24 confer specificity of DNA binding. Two ICF missense mutations have been identified in the ZBTB24 ZF domain, which alter zinc-binding cysteine residues. We demonstrated that the corresponding C382Y and C407G mutations in mouse ZBTB24 abolish specific DNA binding and fail to induce Cdca7 expression. Our analyses indicate and suggest a structural basis for the sequence specific recognition by a transcription factor centrally important for the pathogenesis of ICF syndrome.
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Affiliation(s)
- Ren Ren
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Swanand Hardikar
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - John R Horton
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yue Lu
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yang Zeng
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,Program in Genetics and Epigenetics, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Anup K Singh
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Kevin Lin
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Luis Della Coletta
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jianjun Shen
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,Program in Genetics and Epigenetics, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Celine Shuet Lin Kong
- Program in Cancer Biology, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Hideharu Hashimoto
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Xing Zhang
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Taiping Chen
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,Program in Genetics and Epigenetics, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Xiaodong Cheng
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.,Program in Genetics and Epigenetics, The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
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9
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Poplineau M, Vernerey J, Platet N, N'guyen L, Hérault L, Esposito M, Saurin AJ, Guilouf C, Iwama A, Duprez E. PLZF limits enhancer activity during hematopoietic progenitor aging. Nucleic Acids Res 2019; 47:4509-4520. [PMID: 30892634 PMCID: PMC6511862 DOI: 10.1093/nar/gkz174] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 03/04/2019] [Accepted: 03/08/2019] [Indexed: 12/19/2022] Open
Abstract
PLZF (promyelocytic leukemia zinc finger) is a transcription factor acting as a global regulator of hematopoietic commitment. PLZF displays an epigenetic specificity by recruiting chromatin-modifying factors but little is known about its role in remodeling chromatin of cells committed toward a given specific hematopoietic lineage. In murine myeloid progenitors, we decipher a new role for PLZF in restraining active genes and enhancers by targeting acetylated lysine 27 of Histone H3 (H3K27ac). Functional analyses reveal that active enhancers bound by PLZF are involved in biological processes related to metabolism and associated with hematopoietic aging. Comparing the epigenome of young and old myeloid progenitors, we reveal that H3K27ac variation at active enhancers is a hallmark of hematopoietic aging. Taken together, these data suggest that PLZF, associated with active enhancers, appears to restrain their activity as an epigenetic gatekeeper of hematopoietic aging.
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Affiliation(s)
- Mathilde Poplineau
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France.,Department of Cellular and Molecular Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Julien Vernerey
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Nadine Platet
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Lia N'guyen
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Léonard Hérault
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Michela Esposito
- Gustave Roussy, Université Paris-Saclay, Inserm U1170, CNRS Villejuif, France
| | | | - Christel Guilouf
- Gustave Roussy, Université Paris-Saclay, Inserm U1170, CNRS Villejuif, France
| | - 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, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Estelle Duprez
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
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10
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Patra S, Panigrahi DP, Praharaj PP, Bhol CS, Mahapatra KK, Mishra SR, Behera BP, Jena M, Bhutia SK. Dysregulation of histone deacetylases in carcinogenesis and tumor progression: a possible link to apoptosis and autophagy. Cell Mol Life Sci 2019; 76:3263-3282. [PMID: 30982077 PMCID: PMC11105585 DOI: 10.1007/s00018-019-03098-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/25/2019] [Accepted: 04/08/2019] [Indexed: 02/08/2023]
Abstract
Dysregulation of the epigenome and constitutional epimutation lead to aberrant expression of the genes, which regulate cancer initiation and progression. Histone deacetylases (HDACs), which are highly conserved in yeast to humans, are known to regulate numerous proteins involved in the transcriptional regulation of chromatin structures, apoptosis, autophagy, and mitophagy. In addition, a non-permissive chromatin conformation is created by HDACs, preventing the transcription of the genes encoding the proteins associated with tumorigenesis. Recently, an expanding perspective has been reported from the clinical trials with HDACis (HDAC inhibitors), which has emerged as a determining target for the study of the detailed mechanisms underlying cancer progression. Therefore, the present review focuses on the comprehensive lucubration of post-translational modifications and the molecular mechanisms through which HDACs alter the ambiguities associated with epigenome, with particular insights into the initiation, progression, and regulation of cancer.
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Affiliation(s)
- Srimanta Patra
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India
| | - Debasna P Panigrahi
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India
| | - Prakash P Praharaj
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India
| | - Chandra S Bhol
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India
| | - Kewal K Mahapatra
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India
| | - Soumya R Mishra
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India
| | - Bishnu P Behera
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India
| | - Mrutyunjay Jena
- PG Department of Botany, Berhampur University, Brahmapur, 760007, India
| | - Sujit K Bhutia
- Cancer and Cell Death Laboratory, Department of Life Science, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India.
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11
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Koubi M, Poplineau M, Vernerey J, N'Guyen L, Tiberi G, Garciaz S, El-Kaoutari A, Maqbool MA, Andrau JC, Guillouf C, Saurin AJ, Duprez E. Regulation of the positive transcriptional effect of PLZF through a non-canonical EZH2 activity. Nucleic Acids Res 2019; 46:3339-3350. [PMID: 29425303 PMCID: PMC5909434 DOI: 10.1093/nar/gky080] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 01/31/2018] [Indexed: 11/13/2022] Open
Abstract
The transcription factor PLZF (promyelocytic leukemia zinc finger protein) acts as an epigenetic regulator balancing self-renewal and differentiation of hematopoietic cells through binding to various chromatin-modifying factors. First described as a transcriptional repressor, PLZF is also associated with active transcription, although the molecular bases underlying the differences are unknown. Here, we reveal that in a hematopoietic cell line, PLZF is predominantly associated with transcribed genes. Additionally, we identify a new association between PLZF and the histone methyltransferase, EZH2 at the genomic level. We find that co-occupancy of PLZF and EZH2 on chromatin at PLZF target genes is not associated with SUZ12 or trimethylated lysine 27 of histone H3 (H3K27me3) but with the active histone mark H3K4me3 and active transcription. Removal of EZH2 leads to an increase of PLZF binding and increased gene expression. Our results suggest a new role of EZH2 in restricting PLZF positive transcriptional activity independently of its canonical PRC2 activity.
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Affiliation(s)
- Myriam Koubi
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, 13273 Marseille Cedex 9, France
| | - Mathilde Poplineau
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, 13273 Marseille Cedex 9, France
| | - Julien Vernerey
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, 13273 Marseille Cedex 9, France
| | - Lia N'Guyen
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, 13273 Marseille Cedex 9, France
| | - Guillaume Tiberi
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, 13273 Marseille Cedex 9, France
| | - Sylvain Garciaz
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, 13273 Marseille Cedex 9, France
| | - Abdessamad El-Kaoutari
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, 13273 Marseille Cedex 9, France
| | - Muhammad A Maqbool
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, Cedex 5, France
| | - Jean-Christophe Andrau
- Institut de Génétique Moléculaire de Montpellier, University of Montpellier, CNRS, 34293 Montpellier, Cedex 5, France
| | - Christel Guillouf
- Gustave Roussy, Université Paris-Saclay, Inserm U1170, CNRS Villejuif, France
| | - Andrew J Saurin
- Aix Marseille Université, CNRS, IBDM, UMR 7288, 13288 Marseille, Cedex 9, France
| | - Estelle Duprez
- Epigenetic Factors in Normal and Malignant Hematopoiesis, Aix Marseille Université, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, 13273 Marseille Cedex 9, France
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12
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Du JL, Cao X, Liu HY, Zeng Y, Yang XC, Wan XM, Chang FF, Zhao TY, Jia XY, Wang HZ, Liu J, Cai KZ, Ma ZR. RETRACTED: Function of the PLZF gene in early development and self-renewal of T cells in mice. Biochem Biophys Res Commun 2019; 511:935-940. [PMID: 30853180 DOI: 10.1016/j.bbrc.2019.02.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 02/23/2019] [Accepted: 02/28/2019] [Indexed: 11/21/2022]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).. This article has been retracted at the request of < the Editor in Chief. The Editor in Chief has been made aware of numerous problems with this paper regarding authorship, poor or insufficient supervision of researchers and the unauthorized use of data acquired from a lab visit by one of the authors.
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Affiliation(s)
- Jiang-Long Du
- Center for Biomedical Research, College of Life Science and Engineering, Northwest Minzu University, Lanzhou, 730030, China
| | - Xin Cao
- Center for Biomedical Research, College of Life Science and Engineering, Northwest Minzu University, Lanzhou, 730030, China; State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Han-Yu Liu
- Dejiang County People's Hospital, Tongren District, Guizhou Province, 565200, China
| | - Yan Zeng
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
| | - Xue-Cai Yang
- Center for Biomedical Research, College of Life Science and Engineering, Northwest Minzu University, Lanzhou, 730030, China
| | - Xue-Mei Wan
- Center for Biomedical Research, College of Life Science and Engineering, Northwest Minzu University, Lanzhou, 730030, China
| | - Fan-Fan Chang
- Center for Biomedical Research, College of Life Science and Engineering, Northwest Minzu University, Lanzhou, 730030, China
| | - Tian-Yu Zhao
- Center for Biomedical Research, College of Life Science and Engineering, Northwest Minzu University, Lanzhou, 730030, China
| | - Xiao-Ye Jia
- Center for Biomedical Research, College of Life Science and Engineering, Northwest Minzu University, Lanzhou, 730030, China
| | - Hai-Zhen Wang
- Hebi Precision Medical Research Institute People's Hospital of Hebi, 412 Hemei, Boulevard, Hebi, Henan Province, 458030, China
| | - Jing Liu
- Department of Medical Oncology, People's Hospital of Hebi, 412 Hemei Boulevard, Hebi, Henan Province, 458030, China
| | - Kui-Zheng Cai
- Center for Biomedical Research, College of Life Science and Engineering, Northwest Minzu University, Lanzhou, 730030, China
| | - Zhong-Ren Ma
- Center for Biomedical Research, College of Life Science and Engineering, Northwest Minzu University, Lanzhou, 730030, China; State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, China
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13
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Šeda O, Šedová L, Včelák J, Vaňková M, Liška F, Bendlová B. ZBTB16 and metabolic syndrome: a network perspective. Physiol Res 2018; 66:S357-S365. [PMID: 28948820 DOI: 10.33549/physiolres.933730] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Metabolic syndrome is a prevalent, complex condition. The search for genetic determinants of the syndrome is currently undergoing a paradigm enhancement by adding systems genetics approaches to association studies. We summarize the current evidence on relations between an emergent new candidate, zinc finger and BTB domain containing 16 (ZBTB16) transcription factor and the major components constituting the metabolic syndrome. Information stemming from studies on experimental models with altered Zbtb16 expression clearly shows its effect on adipogenesis, cardiac hypertrophy and fibrosis, lipid levels and insulin sensitivity. Based on current evidence, we provide a network view of relations between ZBTB16 and hallmarks of metabolic syndrome in order to elucidate the potential functional links involving the ZBTB16 node. Many of the identified genes interconnecting ZBTB16 with all or most metabolic syndrome components are linked to immune function, inflammation or oxidative stress. In summary, ZBTB16 represents a promising pleiotropic candidate node for metabolic syndrome.
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Affiliation(s)
- O Šeda
- Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Prague, Czech Republic, Institute of Endocrinology, Prague, Czech Republic.
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14
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Jin Y, Nenseth HZ, Saatcioglu F. Role of PLZF as a tumor suppressor in prostate cancer. Oncotarget 2017; 8:71317-71324. [PMID: 29050363 PMCID: PMC5642638 DOI: 10.18632/oncotarget.19813] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 07/12/2017] [Indexed: 01/07/2023] Open
Abstract
The promyelocytic leukemia zinc finger (PLZF), also known as ZBTB16 (Zinc Finger And BTB Domain Containing 16), is a transcription factor involved in the regulation of diverse biological processes, including cell proliferation, differentiation, organ development, stem cell maintenance and innate immune cell development. A number of recent studies have now implicated PLZF in cancer progression as a tumor suppressor. However, in certain cancer types, PLZF may function as an oncoprotein. Here, we summarize our current knowledge on the role of PLZF in various cancer types, in particular prostate cancer, including its deregulation, genomic alterations and potential functions in prostate cancer progression.
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Affiliation(s)
- Yang Jin
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
| | | | - Fahri Saatcioglu
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway.,Department of Biosciences, University of Oslo, Oslo, Norway
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15
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Chaharbakhshi E, Jemc JC. Broad-complex, tramtrack, and bric-à-brac (BTB) proteins: Critical regulators of development. Genesis 2016; 54:505-518. [DOI: 10.1002/dvg.22964] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 08/08/2016] [Accepted: 08/11/2016] [Indexed: 01/21/2023]
Affiliation(s)
- Edwin Chaharbakhshi
- Department of Biology; Loyola University Chicago; Chicago IL
- Stritch School of Medicine; Loyola University Chicago; Maywood IL
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16
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Maeda T. Regulation of hematopoietic development by ZBTB transcription factors. Int J Hematol 2016; 104:310-23. [PMID: 27250345 DOI: 10.1007/s12185-016-2035-x] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 05/26/2016] [Accepted: 05/26/2016] [Indexed: 12/19/2022]
Abstract
Hematopoietic development is governed by the coordinated expression of lineage- and differentiation stage-specific genes. Transcription factors play major roles in this process and their perturbation may underlie hematologic and immunologic disorders. Nearly 1900 transcription factors are encoded in the human genome: of these, 49 BTB (for broad-complex, tram-track and bric à brac)-zinc finger transcription factors referred to as ZBTB or POK proteins have been identified. ZBTB proteins, including BCL6, PLZF, ThPOK and LRF, exhibit a broad spectrum of functions in normal and malignant hematopoiesis. This review summarizes developmental and molecular functions of ZBTB proteins relevant to hematology.
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Affiliation(s)
- Takahiro Maeda
- Division of Hematology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, One Blackfan Circle, Boston, MA, 02115, USA.
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17
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Epigenetic Regulation of Adaptive NK Cell Diversification. Trends Immunol 2016; 37:451-461. [PMID: 27160662 DOI: 10.1016/j.it.2016.04.006] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 04/11/2016] [Accepted: 04/14/2016] [Indexed: 01/08/2023]
Abstract
Natural killer (NK) cells were previously considered to represent short-lived, innate lymphocytes. However, mouse models have revealed expansion and persistence of differentiated NK cell subsets in response to cytomegalovirus (CMV) infection, paralleling antigen-specific T cell differentiation. Congruently, analyses of humans have uncovered CMV-associated NK cell subsets characterized by epigenetic diversification processes that lead to altered target cell specificities and functional capacities. Here, focusing on responses to viruses, we review similarities and differences between mouse and human adaptive NK cells, identifying molecular analogies that may be key to transcriptional reprogramming and functional alterations. We discuss possible molecular mechanisms underlying epigenetic diversification and hypothesize that processes driving epigenetic diversification may represent a more widespread mechanism for fine-tuning and optimization of cellular immunity.
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18
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Aleksejeva E, Houel A, Briolat V, Levraud JP, Langevin C, Boudinot P. Zebrafish Plzf transcription factors enhance early type I IFN response induced by two non-enveloped RNA viruses. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2016; 57:48-56. [PMID: 26719025 DOI: 10.1016/j.dci.2015.12.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 12/18/2015] [Accepted: 12/18/2015] [Indexed: 06/05/2023]
Abstract
The BTB-POZ transcription factor Promyelocytic Leukemia Zinc Finger (PLZF, or ZBTB16) has been recently identified as a major factor regulating the induction of a subset of Interferon stimulated genes in human and mouse. We show that the two co-orthologues of PLZF found in zebrafish show distinct expression patterns, especially in larvae. Although zbtb16a/plzfa and zbtb16b/plzfb are not modulated by IFN produced during viral infection, their over-expression increases the level of the early type I IFN response, at a critical phase in the race between the virus and the host response. The effect of Plzfb on IFN induction was also detectable after cell infection by different non-enveloped RNA viruses, but not after infection by the rhabdovirus SVCV. Our findings indicate that plzf implication in the regulation of type I IFN responses is conserved across vertebrates, but at multiple levels of the pathway and through different mechanisms.
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Affiliation(s)
- E Aleksejeva
- INRA, Virologie et Immunologie Moléculaires, 78352 Jouy-en-Josas, France
| | - A Houel
- INRA, Virologie et Immunologie Moléculaires, 78352 Jouy-en-Josas, France
| | - V Briolat
- Institut Pasteur, Unité Macrophages et Développement de l'Immunité, 25-28 rue du Docteur Roux, F-75015 Paris, France; CNRS, URA 2578, F-75015 Paris, France
| | - J-P Levraud
- Institut Pasteur, Unité Macrophages et Développement de l'Immunité, 25-28 rue du Docteur Roux, F-75015 Paris, France; CNRS, URA 2578, F-75015 Paris, France
| | - C Langevin
- INRA, Virologie et Immunologie Moléculaires, 78352 Jouy-en-Josas, France
| | - P Boudinot
- INRA, Virologie et Immunologie Moléculaires, 78352 Jouy-en-Josas, France.
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19
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Apuri S, Sokol L. An overview of investigational Histone deacetylase inhibitors (HDACis) for the treatment of non-Hodgkin’s lymphoma. Expert Opin Investig Drugs 2016; 25:687-96. [DOI: 10.1517/13543784.2016.1164140] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Sorum AW, Shrimp JH, Roberts AM, Montgomery DC, Tiwari NK, Lal-Nag M, Simeonov A, Jadhav A, Meier JL. Microfluidic Mobility Shift Profiling of Lysine Acetyltransferases Enables Screening and Mechanistic Analysis of Cellular Acetylation Inhibitors. ACS Chem Biol 2016; 11:734-41. [PMID: 26428393 DOI: 10.1021/acschembio.5b00709] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Lysine acetyltransferases (KATs) are critical regulators of signaling in many diseases, including cancer. A major challenge in establishing the targetable functions of KATs in disease is a lack of well-characterized, cell-active KAT inhibitors. To confront this challenge, here we report a microfluidic mobility shift platform for the discovery and characterization of small molecule KAT inhibitors. Novel fluorescent peptide substrates were developed for four well-known KAT enzymes (p300, Crebbp, Morf, and Gcn5). Enzyme-catalyzed acetylation alters the electrophoretic mobility of these peptides in a microfluidic chip, allowing facile and direct monitoring of KAT activity. A pilot screen was used to demonstrate the utility of microfluidic mobility shift profiling to identify known and novel modulators of KAT activity. Real-time kinetic monitoring of KAT activity revealed that garcinol, a natural product KAT inhibitor used in cellular studies, exhibits time-dependent and detergent-sensitive inhibition, consistent with an aggregation-based mechanism. In contrast, the cell-permeable bisubstrate inhibitor Tat-CoA exhibited potent and time-independent KAT inhibition, highlighting its potential utility as a cellular inhibitor of KAT activity. These studies define microfluidic mobility shift profiling as a powerful platform for the discovery and characterization of small molecule inhibitors of KAT activity, and provide mechanistic insights potentially important for the application of KAT inhibitors in cellular contexts.
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Affiliation(s)
- Alexander W. Sorum
- Chemical
Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, United States
| | - Jonathan H. Shrimp
- Chemical
Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, United States
| | - Allison M. Roberts
- Chemical
Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, United States
| | - David C. Montgomery
- Chemical
Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, United States
| | - Neil K. Tiwari
- Chemical
Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, United States
| | - Madhu Lal-Nag
- Division
of Preclinical Innovation, National Center for Advancing Translational
Sciences, National Institutes of Health, Rockville, Maryland 20850, United States
| | - Anton Simeonov
- Division
of Preclinical Innovation, National Center for Advancing Translational
Sciences, National Institutes of Health, Rockville, Maryland 20850, United States
| | - Ajit Jadhav
- Division
of Preclinical Innovation, National Center for Advancing Translational
Sciences, National Institutes of Health, Rockville, Maryland 20850, United States
| | - Jordan L. Meier
- Chemical
Biology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland 21702, United States
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21
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PLZF mutation alters mouse hematopoietic stem cell function and cell cycle progression. Blood 2016; 127:1881-5. [PMID: 26941402 DOI: 10.1182/blood-2015-09-666974] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 02/24/2016] [Indexed: 12/24/2022] Open
Abstract
Hematopoietic stem cells (HSCs) give rise to all blood populations due to their long-term self-renewal and multipotent differentiation capacities. Because they have to persist throughout an organism's life span, HSCs tightly regulate the balance between proliferation and quiescence. Here, we investigated the role of the transcription factor promyelocytic leukemia zinc finger (plzf) in HSC fate using the Zbtb16(lu/lu)mouse model, which harbors a natural spontaneous mutation that inactivates plzf. Regenerative stress revealed that Zbtb16(lu/lu)HSCs had a lineage-skewing potential from lymphopoiesis toward myelopoiesis, an increase in the long-term-HSC pool, and a decreased repopulation potential. Furthermore, oldplzf-mutant HSCs present an amplified aging phenotype, suggesting that plzf controls age-related pathway. We found that Zbtb16(lu/lu)HSCs harbor a transcriptional signature associated with a loss of stemness and cell cycle deregulation. Lastly, cell cycle analyses revealed an important role for plzf in the regulation of the G1-S transition of HSCs. Our study reveals a new role for plzf in regulating HSC function that is linked to cell cycle regulation, and positions plzf as a key player in controlling HSC homeostasis.
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22
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Lapp HE, Hunter RG. The dynamic genome: transposons and environmental adaptation in the nervous system. Epigenomics 2016; 8:237-49. [DOI: 10.2217/epi.15.107] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Classically thought as genomic clutter, the functional significance of transposable elements (TEs) has only recently become a focus of attention in neuroscience. Increasingly, studies have demonstrated that the brain seems to have more retrotransposition and TE transcription relative to other somatic tissues, suggesting a unique role for TEs in the central nervous system. TE expression and transposition also appear to vary by brain region and change in response to environmental stimuli such as stress. TEs appear to serve a number of adaptive roles in the nervous system. The regulation of TE expression by steroid, epigenetic and other mechanisms in interplay with the environment represents a significant and novel avenue to understanding both normal brain function and disease.
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Affiliation(s)
- Hannah E Lapp
- Department of Psychology & Developmental Brain Sciences Program, University of Massachusetts Boston, Boston, MA 02125-3393, USA
| | - Richard G Hunter
- Department of Psychology & Developmental Brain Sciences Program, University of Massachusetts Boston, Boston, MA 02125-3393, USA
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23
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Liu TM, Lee EH, Lim B, Shyh-Chang N. Concise Review: Balancing Stem Cell Self-Renewal and Differentiation with PLZF. Stem Cells 2016; 34:277-87. [DOI: 10.1002/stem.2270] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 11/21/2015] [Accepted: 11/29/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Tong Ming Liu
- Cancer Stem Cell Biology, Genome Institute of Singapore; Singapore
| | - Eng Hin Lee
- Department of Orthopaedic Surgery; National University of Singapore; Singapore
- NUS Tissue Engineering Program (NUSTEP); National University of Singapore; Singapore
| | - Bing Lim
- Cancer Stem Cell Biology, Genome Institute of Singapore; Singapore
| | - Ng Shyh-Chang
- Stem Cell and Regenerative Biology; Genome Institute of Singapore; Singapore
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24
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McConnell MJ, Durand L, Langley E, Coste-Sarguet L, Zelent A, Chomienne C, Kouzarides T, Licht JD, Guidez F. Post transcriptional control of the epigenetic stem cell regulator PLZF by sirtuin and HDAC deacetylases. Epigenetics Chromatin 2015; 8:38. [PMID: 26405459 PMCID: PMC4581162 DOI: 10.1186/s13072-015-0030-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 09/14/2015] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The transcriptional repressor promyelocytic leukemia zinc finger protein (PLZF) is critical for the regulation of normal stem cells maintenance by establishing specific epigenetic landscape. We have previously shown that CBP/p300 acetyltransferase induces PLZF acetylation in order to increase its deoxynucleotidic acid (DNA) binding activity and to enhance its epigenetic function (repression of PLZF target genes). However, how PLZF is inactivated is not yet understood. RESULTS In this study, we demonstrate that PLZF is deacetylated by both histone deacetylase 3 and the NAD+ dependent deacetylase silent mating type information regulation 2 homolog 1 (SIRT1). Unlike other PLZF-interacting deacetylases, these two proteins interact with the zinc finger domain of PLZF, where the activating CBP/p300 acetylation site was previously described, inducing deacetylation of lysines 647/650/653. Overexpression of histone deacetylase 3 (HDAC3) and SIRT1 is associated with loss of PLZF DNA binding activity and decreases PLZF transcriptional repression. As a result, the chromatin status of the promoters of PLZF target genes, involved in oncogenesis, shift from a heterochromatin to an open euchromatin environment leading to gene expression even in the presence of PLZF. CONCLUSIONS Consequently, SIRT1 and HDAC3 mediated-PLZF deacetylation provides for rapid control and fine-tuning of PLZF activity through post-transcriptional modification to regulate gene expression and cellular homeostasis.
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Affiliation(s)
- Melanie J. McConnell
- />Malaghan Institute for Medical Research, P.O. Box 7060, Wellington, New Zealand
- />Division of Hematology/Oncology, Mount Sinai School of Medicine, New York, NY 10029 USA
| | - Laetitia Durand
- />INSERM UMRS-1131, Institut universitaire d’Hématologie, Université Paris Diderot, 1 avenue Claude Vellefaux, hôpital Saint-Louis, 75010 Paris, France
| | - Emma Langley
- />Wellcome Institute/Cancer Research UK, Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR UK
- />Biogen Idec, San Diego, CA 92122 USA
| | - Lise Coste-Sarguet
- />INSERM UMRS-1131, Institut universitaire d’Hématologie, Université Paris Diderot, 1 avenue Claude Vellefaux, hôpital Saint-Louis, 75010 Paris, France
| | - Arthur Zelent
- />Division of Hemato-oncology, Miller School of Medicine, Miami, FL 33136 USA
| | - Christine Chomienne
- />INSERM UMRS-1131, Institut universitaire d’Hématologie, Université Paris Diderot, 1 avenue Claude Vellefaux, hôpital Saint-Louis, 75010 Paris, France
| | - Tony Kouzarides
- />Wellcome Institute/Cancer Research UK, Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR UK
| | - Jonathan D. Licht
- />Division of Hematology/Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611 USA
- />Division of Hematology/Oncology, Mount Sinai School of Medicine, New York, NY 10029 USA
| | - Fabien Guidez
- />INSERM UMRS-1131, Institut universitaire d’Hématologie, Université Paris Diderot, 1 avenue Claude Vellefaux, hôpital Saint-Louis, 75010 Paris, France
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25
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Haery L, Thompson RC, Gilmore TD. Histone acetyltransferases and histone deacetylases in B- and T-cell development, physiology and malignancy. Genes Cancer 2015; 6:184-213. [PMID: 26124919 PMCID: PMC4482241 DOI: 10.18632/genesandcancer.65] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 05/12/2015] [Indexed: 12/31/2022] Open
Abstract
The development of B and T cells from hematopoietic precursors and the regulation of the functions of these immune cells are complex processes that involve highly regulated signaling pathways and transcriptional control. The signaling pathways and gene expression patterns that give rise to these developmental processes are coordinated, in part, by two opposing classes of broad-based enzymatic regulators: histone acetyltransferases (HATs) and histone deacetylases (HDACs). HATs and HDACs can modulate gene transcription by altering histone acetylation to modify chromatin structure, and by regulating the activity of non-histone substrates, including an array of immune-cell transcription factors. In addition to their role in normal B and T cells, dysregulation of HAT and HDAC activity is associated with a variety of B- and T-cell malignancies. In this review, we describe the roles of HATs and HDACs in normal B- and T-cell physiology, describe mutations and dysregulation of HATs and HDACs that are implicated lymphoma and leukemia, and discuss HAT and HDAC inhibitors that have been explored as treatment options for leukemias and lymphomas.
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Affiliation(s)
- Leila Haery
- Department of Biology, Boston University, Boston, MA, USA
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26
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The acetyltransferase HAT1 moderates the NF-κB response by regulating the transcription factor PLZF. Nat Commun 2015; 6:6795. [DOI: 10.1038/ncomms7795] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 02/27/2015] [Indexed: 01/03/2023] Open
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Singh SP, Zhang HH, Tsang H, Gardina PJ, Myers TG, Nagarajan V, Lee CH, Farber JM. PLZF regulates CCR6 and is critical for the acquisition and maintenance of the Th17 phenotype in human cells. THE JOURNAL OF IMMUNOLOGY 2015; 194:4350-61. [PMID: 25833398 DOI: 10.4049/jimmunol.1401093] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 03/01/2015] [Indexed: 12/31/2022]
Abstract
Th17 cells, which express the chemokine receptor CCR6, are implicated in many immune-mediated disorders, such as psoriasis and multiple sclerosis. We found that expression levels of CCR6 on human effector/memory CD4(+) T cells reflect a continuum of Th17 differentiation. By evaluating the transcriptome in cells with increasing CCR6, we detected progressive upregulation of ZBTB16, which encodes the broad complex, tramtrack, bric-à-brac-zinc finger transcription factor promyelocytic leukemia zinc finger protein (PLZF). Using chromatin immunoprecipitation for modified histones, p300, and PLZF, we identified enhancer-like sites at -9/-10 and -13/-14 kb from the upstream transcription start site of CCR6 that bind PLZF in CCR6(+) cells. For Th cells from adult blood, both in the CCR6(+) memory population and in naive cells activated ex vivo, knockdown of ZBTB16 downregulated CCR6 and other Th17-associated genes. ZBTB16 and RORC (which encodes the "master regulator" RORγt) cross-regulate each other, and PLZF binds at the RORC promoter in CCR6(+) cells. In naive Th cells from cord blood, ZBTB16 expression was confined to CD161(+) cells, which are Th17 cell precursors. ZBTB16 was not expressed in mouse Th17 cells, and Th17 cells could be made from luxoid mice, which harbor an inactivating mutation in Zbtb16. These studies demonstrate a role for PLZF as an activator of transcription important both for Th17 differentiation and the maintenance of the Th17 phenotype in human cells, expand the role of PLZF as a critical regulator in the human adaptive immune system, and identify a novel, essential element in a regulatory network that is of significant therapeutic interest.
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Affiliation(s)
- Satya P Singh
- Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Hongwei H Zhang
- Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Hsinyi Tsang
- Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Paul J Gardina
- Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892; and
| | - Timothy G Myers
- Research Technologies Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892; and
| | - Vijayaraj Nagarajan
- Bioinformatics and Computational Biosciences Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Chang Hoon Lee
- Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Joshua M Farber
- Laboratory of Molecular Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892;
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Affiliation(s)
| | - Philip A. Cole
- Department
of Pharmacology
and Molecular Sciences, The Johns Hopkins
University School of Medicine, 725 North Wolfe Street, Hunterian 316, Baltimore, Maryland 21205, United States
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29
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BTB-ZF transcriptional regulator PLZF modifies chromatin to restrain inflammatory signaling programs. Proc Natl Acad Sci U S A 2015; 112:1535-40. [PMID: 25605927 DOI: 10.1073/pnas.1409728112] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Inflammation is critical for host defense, but without appropriate control, it can cause chronic disease or even provoke fatal responses. Here we identify a mechanism that limits the inflammatory response. Probing the responses of macrophages to the key sensory Toll-like receptors, we identify that the Broad-complex, Tramtrack and Bric-a-brac/poxvirus and zinc finger (BTB/POZ), transcriptional regulator promyelocytic leukemia zinc finger (PLZF) limits the expression of inflammatory gene products. In accord with this finding, PLZF-deficient animals express higher levels of potent inflammatory cytokines and mount exaggerated inflammatory responses to infectious stimuli. Temporal quantitation of inflammatory gene transcripts shows increased gene induction in the absence of PLZF. Genome-wide analysis of histone modifications distinguish that PLZF establishes basal activity states of early response genes to maintain immune homeostasis and limit damaging inflammation. We show that PLZF stabilizes a corepressor complex that encompasses histone deacetylase activity to control chromatin. Together with our previous demonstration that PLZF promotes the antiviral response, these results suggest a strategy that could realize one of the major goals of immune therapy to retain immune resistance to pathogens while curbing damaging inflammation.
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Chen H, Ruiz PD, Novikov L, Casill AD, Park JW, Gamble MJ. MacroH2A1.1 and PARP-1 cooperate to regulate transcription by promoting CBP-mediated H2B acetylation. Nat Struct Mol Biol 2014; 21:981-9. [PMID: 25306110 PMCID: PMC4221384 DOI: 10.1038/nsmb.2903] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 09/16/2014] [Indexed: 12/29/2022]
Abstract
The histone variant macroH2A1 regulates gene expression important for differentiation, stem cell reprogramming and tumor suppression. Here, we demonstrate that in primary human cells, macroH2A1 participates in two physically and functionally distinct types of chromatin either marked by H3K27me3 or nine histone acetylations. Using RNA-seq, we found that macroH2A1-regulated genes, which have roles in cancer progression, are specifically found in macroH2A1-containing acetylated chromatin. Of the two macroH2A1 variants, macroH2A1.1 and macroH2A1.2, the former is suppressed in cancer and can interact with PARP-generated poly(ADP-ribose). Through the recruitment of PARP-1, macroH2A1.1 promotes the CBP-mediated acetylation of H2B K12 and K120 which either positively or negatively regulates the expression of macroH2A1-target genes. While macroH2A1-regulated H2B acetylation is a common feature of primary cells, this regulation is typically lost in cancer cells. Consequently, our results provide important insight into macroH2A1.1’s role in cancer suppression.
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Affiliation(s)
- Hongshan Chen
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York, USA
| | - Penelope D Ruiz
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York, USA
| | - Leonid Novikov
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York, USA
| | - Alyssa D Casill
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York, USA
| | - Jong Woo Park
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York, USA
| | - Matthew J Gamble
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Yeshiva University, Bronx, New York, USA
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31
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Kasper LH, Qu C, Obenauer JC, McGoldrick DJ, Brindle PK. Genome-wide and single-cell analyses reveal a context dependent relationship between CBP recruitment and gene expression. Nucleic Acids Res 2014; 42:11363-82. [PMID: 25249627 PMCID: PMC4191404 DOI: 10.1093/nar/gku827] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 08/27/2014] [Accepted: 09/01/2014] [Indexed: 12/31/2022] Open
Abstract
Genome-wide distribution of histone H3K18 and H3K27 acetyltransferases, CBP (CREBBP) and p300 (EP300), is used to map enhancers and promoters, but whether these elements functionally require CBP/p300 remains largely uncertain. Here we compared global CBP recruitment with gene expression in wild-type and CBP/p300 double-knockout (dKO) fibroblasts. ChIP-seq using CBP-null cells as a control revealed nearby CBP recruitment for 20% of constitutively-expressed genes, but surprisingly, three-quarters of these genes were unaffected or slightly activated in dKO cells. Computationally defined enhancer-promoter-units (EPUs) having a CBP peak near the enhancer-like element were more predictive, with CBP/p300 deletion attenuating expression of 40% of such constitutively-expressed genes. Examining signal-responsive (Hypoxia Inducible Factor) genes showed that 97% were within 50 kilobases of an inducible CBP peak, and 70% of these required CBP/p300 for full induction. Unexpectedly, most inducible CBP peaks occurred near signal-nonresponsive genes. Finally, single-cell expression analysis revealed additional context dependence where some signal-responsive genes were not uniformly dependent on CBP/p300 in individual cells. While CBP/p300 was needed for full induction of some genes in single-cells, for other genes CBP/p300 increased the probability of maximal expression. Thus, target gene context influences the transcriptional requirement for CBP/p300, possibly by multiple mechanisms.
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Affiliation(s)
- Lawryn H Kasper
- Department of Biochemistry, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Chunxu Qu
- Department of Computational Biology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - John C Obenauer
- Department of Computational Biology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Daniel J McGoldrick
- Department of Computational Biology, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
| | - Paul K Brindle
- Department of Biochemistry, St Jude Children's Research Hospital, 262 Danny Thomas Place, Memphis, TN 38105, USA
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32
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Mackeh R, Lorin S, Ratier A, Mejdoubi-Charef N, Baillet A, Bruneel A, Hamaï A, Codogno P, Poüs C, Perdiz D. Reactive oxygen species, AMP-activated protein kinase, and the transcription cofactor p300 regulate α-tubulin acetyltransferase-1 (αTAT-1/MEC-17)-dependent microtubule hyperacetylation during cell stress. J Biol Chem 2014; 289:11816-11828. [PMID: 24619423 DOI: 10.1074/jbc.m113.507400] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Beyond its presence in stable microtubules, tubulin acetylation can be boosted after UV exposure or after nutrient deprivation, but the mechanisms of microtubule hyperacetylation are still unknown. In this study, we show that this hyperacetylation is a common response to several cellular stresses that involves the stimulation of the major tubulin acetyltransferase MEC-17. We also demonstrate that the acetyltransferase p300 negatively regulates MEC-17 expression and is sequestered on microtubules upon stress. We further show that reactive oxygen species of mitochondrial origin are required for microtubule hyperacetylation by activating the AMP kinase, which in turn mediates MEC-17 phosphorylation upon stress. Finally, we show that preventing microtubule hyperacetylation by knocking down MEC-17 affects cell survival under stress conditions and starvation-induced autophagy, thereby pointing out the importance of this rapid modification as a broad cell response to stress.
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Affiliation(s)
- Rafah Mackeh
- Université Paris Sud, EA4530, Faculté de Pharmacie, Châtenay-Malabry, France
| | - Séverine Lorin
- Université Paris Sud, EA4530, Faculté de Pharmacie, Châtenay-Malabry, France
| | - Ameetha Ratier
- Université Paris Sud, EA4530, Faculté de Pharmacie, Châtenay-Malabry, France
| | | | - Anita Baillet
- Université Paris Sud, EA4530, Faculté de Pharmacie, Châtenay-Malabry, France
| | - Arnaud Bruneel
- Université Paris Sud, EA4530, Faculté de Pharmacie, Châtenay-Malabry, France; Assistance Publique-Hôpitaux de Paris, Service de Biochimie Métabolique et Cellulaire, Hôpital Bichat, 75018 Paris, France
| | - Ahmed Hamaï
- INSERM U845, Université Paris Descartes, 75014 Paris, France
| | - Patrice Codogno
- INSERM U845, Université Paris Descartes, 75014 Paris, France
| | - Christian Poüs
- Université Paris Sud, EA4530, Faculté de Pharmacie, Châtenay-Malabry, France; Biochimie-Hormonologie, Hôpital Antoine Béclère, Assistance Publique-Hôpitaux de Paris, 92141 Clamart, France.
| | - Daniel Perdiz
- Université Paris Sud, EA4530, Faculté de Pharmacie, Châtenay-Malabry, France
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33
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Lin DY, Huang CC, Hsieh YT, Lin HC, Pao PC, Tsou JH, Lai CY, Hung LY, Wang JM, Chang WC, Lee YC. Analysis of the interaction between Zinc finger protein 179 (Znf179) and promyelocytic leukemia zinc finger (Plzf). J Biomed Sci 2013; 20:98. [PMID: 24359566 PMCID: PMC3878200 DOI: 10.1186/1423-0127-20-98] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 12/17/2013] [Indexed: 01/15/2023] Open
Abstract
Background Zinc finger protein 179 (Znf179), also known as ring finger protein 112 (Rnf112), is a member of the RING finger protein family and plays an important role in neuronal differentiation. To investigate novel mechanisms of Znf179 regulation and function, we performed a yeast two-hybrid screen to identify Znf179-interacting proteins. Results Using a yeast two-hybrid screen, we have identified promyelocytic leukemia zinc finger (Plzf) as a specific interacting protein of Znf179. Further analysis showed that the region containing the first two zinc fingers of Plzf is critical for its interaction with Znf179. Although the transcriptional regulatory activity of Plzf was not affected by Znf179 in the Gal4-dependent transcription assay system, the cellular localization of Znf179 was changed from cytoplasm to nucleus when Plzf was co-expressed. We also found that Znf179 interacted with Plzf and regulated Plzf protein expression. Conclusions Our results showed that Znf179 interacted with Plzf, resulting in its translocation from cytoplasm to the nucleus and increase of Plzf protein abundance. Although the precise nature and role of the Znf179-Plzf interaction remain to be elucidated, both of these two genes are involved in the regulation of neurogenesis. Our finding provides further research direction for studying the molecular functions of Znf179.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Yi-Chao Lee
- Ph,D, Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan.
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Cao J, Zhu S, Zhou W, Li J, Liu C, Xuan H, Yan J, Zheng L, Zhou L, Yu J, Chen G, Huang Y, Yu Z, Feng L. PLZF mediates the PTEN/AKT/FOXO3a signaling in suppression of prostate tumorigenesis. PLoS One 2013; 8:e77922. [PMID: 24339862 PMCID: PMC3858220 DOI: 10.1371/journal.pone.0077922] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 09/13/2013] [Indexed: 12/21/2022] Open
Abstract
Promyelocytic leukemia zinc finger (PLZF) protein expression is closely related to the progression of human cancers, including prostate cancer (PCa). However, the according context of a signaling pathway for PLZF to suppress prostate tumorigenesis remains greatly unknown. Here we report that PLZF is a downstream mediator of the PTEN signaling pathway in PCa. We found that PLZF expression is closely correlated with PTEN expression in a cohort of prostate cancer specimens. Interestingly, both PTEN rescue and phosphoinositide 3-kinase (PI3K) inhibitor LY294002 treatment increase the PLZF expression in prostate cancer cell lines. Further, luciferase reporter assay and chromatin immunoprecipitation assay demonstrate that FOXO3a, a transcriptional factor phosphorylated by PI3K/AKT, could directly bind to the promoter of PLZF gene. These results indicate that PTEN regulates PLZF expression by AKT/FOXO3a. Moreover, our animal experiments also demonstrate that PLZF is capable of inhibiting prostate tumorigenesis in vivo. Taken together, our study defines a PTEN/PLZF pathway and would shed new lights for developing therapeutic strategy of prostate cancer.
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Affiliation(s)
- JingPing Cao
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Laboratory for Germ Cell Research, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai, China
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, SJTU-SM, Shanghai, China
| | - Shu Zhu
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Zhou
- Laboratory for Germ Cell Research, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai, China
| | - Jie Li
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, SJTU-SM, Shanghai, China
| | - Chang Liu
- Laboratory for Germ Cell Research, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai, China
| | - HanQing Xuan
- Department of Urology, Renji Hospital, SJTU-SM, Shanghai, China
| | - Jie Yan
- Laboratory of Tumor Suppressor Genes and miRNAs, Department of Biochemistry and Molecular Cell Biology, SJTU-SM, Shanghai, China
| | - Lin Zheng
- Department of Pathology, SJTU-SM, Shanghai, China
| | - LiXin Zhou
- Department of Urology, Renji Hospital, SJTU-SM, Shanghai, China
| | - JianXiu Yu
- Laboratory of Tumor Suppressor Genes and miRNAs, Department of Biochemistry and Molecular Cell Biology, SJTU-SM, Shanghai, China
| | - GuoQiang Chen
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, SJTU-SM, Shanghai, China
| | - YiRan Huang
- Department of Urology, Renji Hospital, SJTU-SM, Shanghai, China
| | - Zhuo Yu
- Laboratory for Germ Cell Research, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai, China
- * E-mail: (ZY); (LXF)
| | - LiXin Feng
- Laboratory for Germ Cell Research, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai, China
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Washington DC, United States of America
- * E-mail: (ZY); (LXF)
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Ali A, Bluteau O, Messaoudi K, Palazzo A, Boukour S, Lordier L, Lecluse Y, Rameau P, Kraus-Berthier L, Jacquet-Bescond A, Lelièvre H, Depil S, Dessen P, Solary E, Raslova H, Vainchenker W, Plo I, Debili N. Thrombocytopenia induced by the histone deacetylase inhibitor abexinostat involves p53-dependent and -independent mechanisms. Cell Death Dis 2013; 4:e738. [PMID: 23887629 PMCID: PMC3730430 DOI: 10.1038/cddis.2013.260] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 06/12/2013] [Accepted: 06/17/2013] [Indexed: 12/02/2022]
Abstract
Abexinostat is a pan histone deacetylase inhibitor (HDACi) that demonstrates efficacy in malignancy treatment. Like other HDACi, this drug induces a profound thrombocytopenia whose mechanism is only partially understood. We have analyzed its effect at doses reached in patient plasma on in vitro megakaryopoiesis derived from human CD34+ cells. When added at day 0 in culture, abexinostat inhibited CFU-MK growth, megakaryocyte (MK) proliferation and differentiation. These effects required only a short incubation period. Decreased proliferation was due to induction of apoptosis and was not related to a defect in TPO/MPL/JAK2/STAT signaling. When added later (day 8), the compound induced a dose-dependent decrease (up to 10-fold) in proplatelet (PPT) formation. Gene profiling from MK revealed a silencing in the expression of DNA repair genes with a marked RAD51 decrease at protein level. DNA double-strand breaks were increased as attested by elevated γH2AX phosphorylation level. Moreover, ATM was phosphorylated leading to p53 stabilization and increased BAX and p21 expression. The use of a p53 shRNA rescued apoptosis, and only partially the defect in PPT formation. These results suggest that HDACi induces a thrombocytopenia by a p53-dependent mechanism along MK differentiation and a p53-dependent and -independent mechanism for PPT formation.
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Affiliation(s)
- A Ali
- Institut National de la Santé et de la Recherche Médicale, UMR 1009, Equipe labellisée Ligue Contre le Cancer, Laboratoire d'Excellence GR-Ex.114 rue Edouard Vaillant, 94805 Villejuif, France
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The epigenetic regulator PLZF represses L1 retrotransposition in germ and progenitor cells. EMBO J 2013; 32:1941-52. [PMID: 23727884 DOI: 10.1038/emboj.2013.118] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 04/23/2013] [Indexed: 11/08/2022] Open
Abstract
Germ cells and adult stem cells maintain tissue homeostasis through a finely tuned program of responses to both physiological and stress-related signals. PLZF (Promyelocytic Leukemia Zinc Finger protein), a member of the POK family of transcription factors, acts as an epigenetic regulator of stem cell maintenance in germ cells and haematopoietic stem cells. We identified L1 retrotransposons as the primary targets of PLZF. PLZF-mediated DNA methylation induces silencing of the full-length L1 gene and inhibits L1 retrotransposition. Furthermore, PLZF causes the formation of barrier-type boundaries by acting on inserted truncated L1 sequences in protein coding genes. Cell stress releases PLZF-mediated repression, resulting in L1 activation/retrotransposition and impaired spermatogenesis and myelopoiesis. These results reveal a novel mechanism of action by which, PLZF represses retrotransposons, safeguarding normal progenitor homeostasis.
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Suliman BA, Xu D, Williams BRG. The promyelocytic leukemia zinc finger protein: two decades of molecular oncology. Front Oncol 2012; 2:74. [PMID: 22822476 PMCID: PMC3398472 DOI: 10.3389/fonc.2012.00074] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Accepted: 06/27/2012] [Indexed: 01/06/2023] Open
Abstract
The promyelocytic leukemia zinc finger (PLZF) protein, also known as Zbtb16 or Zfp145, was first identified in a patient with acute promyelocytic leukemia, where a reciprocal chromosomal translocation t(11;17)(q23;q21) resulted in a fusion with the RARA gene encoding retinoic acid receptor alpha. The wild-type Zbtb16 gene encodes a transcription factor that belongs to the POK (POZ and Krüppel) family of transcriptional repressors. In addition to nine Krüppel-type sequence-specific zinc fingers, which make it a member of the Krüppel-like zinc finger protein family, the PLZF protein contains an N-terminal BTB/POZ domain and RD2 domain. PLZF has been shown to be involved in major developmental and biological processes, such as spermatogenesis, hind limb formation, hematopoiesis, and immune regulation. PLZF is localized mainly in the nucleus where it exerts its transcriptional repression function, and many post-translational modifications affect this ability and also have an impact on its cytoplasmic/nuclear dissociation. PLZF achieves its transcriptional regulation by binding to many secondary molecules to form large multi-protein complexes that bind to the regulatory elements in the promoter region of the target genes. These complexes are also capable of physically interacting with its target proteins. Recently, PLZF has become implicated in carcinogenesis as a tumor suppressor gene, since it regulates the cell cycle and apoptosis in many cell types. This review will examine the major advances in our knowledge of PLZF biological activities that augment its value as a therapeutic target, particularly in cancer and immunological diseases.
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Affiliation(s)
- Bandar Ali Suliman
- Centre for Cancer Research, Monash Institute of Medical Research, Monash University Melbourne, VIC, Australia
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38
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Abstract
Ghrelin O-acyltransferase (GOAT) is responsible for catalyzing the attachment of the eight-carbon fatty acid octanoyl to the Ser3 side chain of the peptide ghrelin to generate the active form of this metabolic hormone. As such, GOAT is viewed as a potential therapeutic target for the treatment of obesity and diabetes mellitus. Here, we review recent progress in the development of cell and in vitro assays to measure GOAT action and the identification of several synthetic GOAT inhibitors. In particular, we discuss the design, synthesis, and characterization of the bisubstrate analog GO-CoA-Tat and its ability to modulate weight and blood glucose in mice. We also highlight current challenges and future research directions in our biomedical understanding of this fascinating ghrelin processing enzyme.
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Affiliation(s)
- Martin S Taylor
- Department of Pharmacology & Molecular Sciences, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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39
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Abstract
This review focuses on the progress in the development of the second generation of epigenetic modifiers able to modulate histone marks, and restore normal gene transcription.
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Affiliation(s)
- Philip Jones
- Institute for Applied Cancer Sciences
- MD Anderson Cancer Center
- Houston
- USA
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40
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Beaulieu AM, Sant'Angelo DB. The BTB-ZF family of transcription factors: key regulators of lineage commitment and effector function development in the immune system. THE JOURNAL OF IMMUNOLOGY 2011; 187:2841-7. [PMID: 21900183 DOI: 10.4049/jimmunol.1004006] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Successful immunity depends upon the activity of multiple cell types. Commitment of pluripotent precursor cells to specific lineages, such as T or B cells, is obviously fundamental to this process. However, it is also becoming clear that continued differentiation and specialization of lymphoid cells is equally important for immune system integrity. Several members of the BTB-ZF family have emerged as critical factors that control development of specific lineages and also of specific effector subsets within these lineages. For example, BTB-ZF genes have been shown to control T cell versus B cell commitment and CD4 versus CD8 lineage commitment. Others, such as PLZF for NKT cells and Bcl-6 for T follicular helper cells, are necessary for the acquisition of effector functions. In this review, we summarize current findings concerning the BTB-ZF family members with a reported role in the immune system.
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Affiliation(s)
- Aimee M Beaulieu
- Immunology Program, Sloan-Kettering Institute, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA
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Furdas SD, Kannan S, Sippl W, Jung M. Small molecule inhibitors of histone acetyltransferases as epigenetic tools and drug candidates. Arch Pharm (Weinheim) 2011; 345:7-21. [PMID: 22234972 DOI: 10.1002/ardp.201100209] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 07/14/2011] [Accepted: 07/18/2011] [Indexed: 01/24/2023]
Abstract
Alteration of the acetylation state of histone proteins contributes to transcriptional regulation and epigenetic inheritance. Dysregulation of these processes may lead to human diseases, especially cancer. One of the major chromatin modifications is histone acetylation and this review gives an overview of the role of histone acetyltransferases, their structural aspects, as well as of chemical modulators targeting their enzymatical activities. Inhibitors and activators of histone acetyltransferases are presented and their capability to influence histone and non-histone protein acetylation levels is discussed. Development of small molecules as epigenetic tools that alter histone acetyltransferase activity will be helpful to better understand the consequences of histone and generally protein acetylation and potentially offer novel therapeutic approaches for the treatment of cancer and other diseases.
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Affiliation(s)
- Silviya D Furdas
- Institute of Pharmaceutical Sciences, Albert-Ludwigs-University of Freiburg, Germany
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Paradoxical enhancement of fear extinction memory and synaptic plasticity by inhibition of the histone acetyltransferase p300. J Neurosci 2011; 31:7486-91. [PMID: 21593332 DOI: 10.1523/jneurosci.0133-11.2011] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
It is well established that the coordinated regulation of activity-dependent gene expression by the histone acetyltransferase (HAT) family of transcriptional coactivators is crucial for the formation of contextual fear and spatial memory, and for hippocampal synaptic plasticity. However, no studies have examined the role of this epigenetic mechanism within the infralimbic prefrontal cortex (ILPFC), an area of the brain that is essential for the formation and consolidation of fear extinction memory. Here we report that a postextinction training infusion of a combined p300/CBP inhibitor (Lys-CoA-Tat), directly into the ILPFC, enhances fear extinction memory in mice. Our results also demonstrate that the HAT p300 is highly expressed within pyramidal neurons of the ILPFC and that the small-molecule p300-specific inhibitor (C646) infused into the ILPFC immediately after weak extinction training enhances the consolidation of fear extinction memory. C646 infused 6 h after extinction had no effect on fear extinction memory, nor did an immediate postextinction training infusion into the prelimbic prefrontal cortex. Consistent with the behavioral findings, inhibition of p300 activity within the ILPFC facilitated long-term potentiation (LTP) under stimulation conditions that do not evoke long-lasting LTP. These data suggest that one function of p300 activity within the ILPFC is to constrain synaptic plasticity, and that a reduction in the function of this HAT is required for the formation of fear extinction memory.
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Cerchietti LC, Hatzi K, Caldas-Lopes E, Yang SN, Figueroa ME, Morin RD, Hirst M, Mendez L, Shaknovich R, Cole PA, Bhalla K, Gascoyne RD, Marra M, Chiosis G, Melnick A. BCL6 repression of EP300 in human diffuse large B cell lymphoma cells provides a basis for rational combinatorial therapy. J Clin Invest 2010; 120:4569-82. [PMID: 21041953 DOI: 10.1172/jci42869] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Accepted: 09/21/2010] [Indexed: 11/17/2022] Open
Abstract
B cell lymphoma 6 (BCL6), which encodes a transcriptional repressor, is a critical oncogene in diffuse large B cell lymphomas (DLBCLs). Although a retro-inverted BCL6 peptide inhibitor (RI-BPI) was recently shown to potently kill DLBCL cells, the underlying mechanisms remain unclear. Here, we show that RI-BPI induces a particular gene expression signature in human DLBCL cell lines that included genes associated with the actions of histone deacetylase (HDAC) and Hsp90 inhibitors. BCL6 directly repressed the expression of p300 lysine acetyltransferase (EP300) and its cofactor HLA-B-associated transcript 3 (BAT3). RI-BPI induced expression of p300 and BAT3, resulting in acetylation of p300 targets including p53 and Hsp90. Induction of p300 and BAT3 was required for the antilymphoma effects of RI-BPI, since specific blockade of either protein rescued human DLBCL cell lines from the BCL6 inhibitor. Consistent with this, combination of RI-BPI with either an HDAC inhibitor (HDI) or an Hsp90 inhibitor potently suppressed or even eradicated established human DLBCL xenografts in mice. Furthermore, HDAC and Hsp90 inhibitors independently enhanced RI-BPI killing of primary human DLBCL cells in vitro. We also show that p300-inactivating mutations occur naturally in human DLBCL patients and may confer resistance to BCL6 inhibitors. Thus, BCL6 repression of EP300 provides a basis for rational targeted combinatorial therapy for patients with DLBCL.
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Affiliation(s)
- Leandro C Cerchietti
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Katerina Hatzi
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Eloisi Caldas-Lopes
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Shao Ning Yang
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Maria E Figueroa
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Ryan D Morin
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Martin Hirst
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Lourdes Mendez
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Rita Shaknovich
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Philip A Cole
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Kapil Bhalla
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Randy D Gascoyne
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Marco Marra
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Gabriela Chiosis
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
| | - Ari Melnick
- Hematology and Oncology Division, and Department of Pharmacology, Weill Cornell Medical College, New York, New York, USA. Department of Molecular Pharmacology and Chemistry, Sloan-Kettering Institute, New York, New York, USA. Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada. Department of Pathology, Weill Cornell Medical College, New York, New York, USA. Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA. The University of Kansas Cancer Center, Kansas University Medical Center, Kansas City, Kansas, USA. Centre for Lymphoid Cancers and the Departments of Pathology and Experimental Therapeutics, British Columbia Cancer Agency, British Columbia Cancer Research Centre, Vancouver, British Columbia, Canada
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Bowers EM, Yan G, Mukherjee C, Orry A, Wang L, Holbert MA, Crump NT, Hazzalin CA, Liszczak G, Yuan H, Larocca C, Saldanha SA, Abagyan R, Sun Y, Meyers DJ, Marmorstein R, Mahadevan LC, Alani RM, Cole PA. Virtual ligand screening of the p300/CBP histone acetyltransferase: identification of a selective small molecule inhibitor. ACTA ACUST UNITED AC 2010; 17:471-82. [PMID: 20534345 DOI: 10.1016/j.chembiol.2010.03.006] [Citation(s) in RCA: 495] [Impact Index Per Article: 35.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Revised: 02/18/2010] [Accepted: 03/04/2010] [Indexed: 01/18/2023]
Abstract
The histone acetyltransferase (HAT) p300/CBP is a transcriptional coactivator implicated in many gene regulatory pathways and protein acetylation events. Although p300 inhibitors have been reported, a potent, selective, and readily available active-site-directed small molecule inhibitor is not yet known. Here we use a structure-based, in silico screening approach to identify a commercially available pyrazolone-containing small molecule p300 HAT inhibitor, C646. C646 is a competitive p300 inhibitor with a K(i) of 400 nM and is selective versus other acetyltransferases. Studies on site-directed p300 HAT mutants and synthetic modifications of C646 confirm the importance of predicted interactions in conferring potency. Inhibition of histone acetylation and cell growth by C646 in cells validate its utility as a pharmacologic probe and suggest that p300/CBP HAT is a worthy anticancer target.
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Affiliation(s)
- Erin M Bowers
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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Mehta KR, Chan YM, Lee MX, Yang CY, Voloshchuk N, Montclare JK. Mutagenesis of tGCN5 core region reveals two critical surface residues F90 and R140. Biochem Biophys Res Commun 2010; 400:363-8. [DOI: 10.1016/j.bbrc.2010.08.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2010] [Accepted: 08/17/2010] [Indexed: 12/01/2022]
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Wasim M, Carlet M, Mansha M, Greil R, Ploner C, Trockenbacher A, Rainer J, Kofler R. PLZF/ZBTB16, a glucocorticoid response gene in acute lymphoblastic leukemia, interferes with glucocorticoid-induced apoptosis. J Steroid Biochem Mol Biol 2010; 120:218-27. [PMID: 20435142 PMCID: PMC2892747 DOI: 10.1016/j.jsbmb.2010.04.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Revised: 03/29/2010] [Accepted: 04/21/2010] [Indexed: 02/03/2023]
Abstract
Glucocorticoids (GCs) cause cell cycle arrest and apoptosis in lymphoid cells which is exploited to treat lymphoid malignancies. The mechanisms of these anti-leukemic GC effects are, however, poorly understood. We previously defined a list of GC-regulated genes by expression profiling in children with acute lymphoblastic leukemia (ALL) during systemic GC monotherapy and in experimental systems of GC-induced apoptosis. PLZF/ZBTB16, a transcriptional repressor, was one of the most promising candidates derived from this screen. To investigate its role in the anti-leukemic GC effects, we performed overexpression and knock-down experiments in CCRF-CEM childhood ALL cells. Transgenic PLZF/ZBTB16 alone had no detectable effect on cell proliferation or survival, but reduced sensitivity to GC-induced apoptosis but not apoptosis induced by antibodies against Fas/CD95 or 3 different chemotherapeutics. Knock-down of ZBTB16 entailed a small, but significant, increase in cell death induction by GC. Affymetrix Exon array-based whole genome expression profiling revealed that PLZF/ZBTB16 induction did not significantly alter the expression profile, however, it interfered with the regulation of numerous GC response genes, including BCL2L11/Bim, which has previously been shown to be responsible for cell death induction in CCRF-CEM cells. Thus, the protective effect of PLZF/ZBTB16 can be attributed to interference with transcriptional regulation by GC.
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Affiliation(s)
- Muhammad Wasim
- Division Molecular Pathophysiology, Biocenter, Medical University of Innsbruck, Fritz-Pregl-Straße 3, A-6020 Innsbruck, Austria
- Tyrolean Cancer Research Institute, 6020 Innsbruck, Austria
| | - Michela Carlet
- Division Molecular Pathophysiology, Biocenter, Medical University of Innsbruck, Fritz-Pregl-Straße 3, A-6020 Innsbruck, Austria
| | - Muhammad Mansha
- Division Molecular Pathophysiology, Biocenter, Medical University of Innsbruck, Fritz-Pregl-Straße 3, A-6020 Innsbruck, Austria
- Tyrolean Cancer Research Institute, 6020 Innsbruck, Austria
| | - Richard Greil
- III. Medical University Hospital, Paracelsus Medical University, 5020 Salzburg, Austria
| | - Christian Ploner
- Division Molecular Pathophysiology, Biocenter, Medical University of Innsbruck, Fritz-Pregl-Straße 3, A-6020 Innsbruck, Austria
| | - Alexander Trockenbacher
- Division Molecular Pathophysiology, Biocenter, Medical University of Innsbruck, Fritz-Pregl-Straße 3, A-6020 Innsbruck, Austria
| | - Johannes Rainer
- Division Molecular Pathophysiology, Biocenter, Medical University of Innsbruck, Fritz-Pregl-Straße 3, A-6020 Innsbruck, Austria
- Tyrolean Cancer Research Institute, 6020 Innsbruck, Austria
| | - Reinhard Kofler
- Division Molecular Pathophysiology, Biocenter, Medical University of Innsbruck, Fritz-Pregl-Straße 3, A-6020 Innsbruck, Austria
- Tyrolean Cancer Research Institute, 6020 Innsbruck, Austria
- Corresponding author at: Division of Molecular Pathophysiology, Biocenter, Medical University of Innsbruck, Fritz-Pregl-Straße 3, A-6020 Innsbruck, Austria. Tel.: +43 512 9003 70360; fax: +43 512 9003 73960.
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Karmakar S, Gao T, Pace MC, Oesterreich S, Smith CL. Cooperative activation of cyclin D1 and progesterone receptor gene expression by the SRC-3 coactivator and SMRT corepressor. Mol Endocrinol 2010; 24:1187-202. [PMID: 20392877 DOI: 10.1210/me.2009-0480] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Although the ability of coactivators to enhance the expression of estrogen receptor-alpha (ERalpha) target genes is well established, the role of corepressors in regulating 17beta-estradiol (E2)-induced gene expression is poorly understood. Previous studies revealed that the silencing mediator of retinoic acid and thyroid hormone receptor (SMRT) corepressor is required for full ERalpha transcriptional activity in MCF-7 breast cancer cells, and we report herein the E2-dependent recruitment of SMRT to the regulatory regions of the progesterone receptor (PR) and cyclin D1 genes. Individual depletion of SMRT or steroid receptor coactivator (SRC)-3 modestly decreased E2-induced PR and cyclin D1 expression; however, simultaneous depletion revealed a cooperative effect of this coactivator and corepressor on the expression of these genes. SMRT and SRC-3 bind directly in an ERalpha-independent manner, and this interaction promotes E2-dependent SRC-3 binding to ERalpha measured by co-IP and SRC-3 recruitment to the cyclin D1 gene as measured by chromatin IP assays. Moreover, SMRT stimulates the intrinsic transcriptional activity of all of the SRC family (p160) coactivators. Our data link the SMRT corepressor directly with SRC family coactivators in positive regulation of ERalpha-dependent gene expression and, taken with the positive correlation found for SMRT and SRC-3 in human breast tumors, suggest that SMRT can promote ERalpha- and SRC-3-dependent gene expression in breast cancer.
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Affiliation(s)
- Sudipan Karmakar
- Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA
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He Y, Blackford JA, Kohn EC, Simons SS. STAMP alters the growth of transformed and ovarian cancer cells. BMC Cancer 2010; 10:128. [PMID: 20374646 PMCID: PMC2858746 DOI: 10.1186/1471-2407-10-128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2009] [Accepted: 04/07/2010] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Steroid receptors play major roles in the development, differentiation, and homeostasis of normal and malignant tissue. STAMP is a novel coregulator that not only enhances the ability of p160 coactivator family members TIF2 and SRC-1 to increase gene induction by many of the classical steroid receptors but also modulates the potency (or EC50) of agonists and the partial agonist activity of antisteroids. These modulatory activities of STAMP are not limited to gene induction but are also observed for receptor-mediated gene repression. However, a physiological role for STAMP remains unclear. METHODS The growth rate of HEK293 cells stably transfected with STAMP plasmid and overexpressing STAMP protein is found to be decreased. We therefore asked whether different STAMP levels might also contribute to the abnormal growth rates of cancer cells. Panels of different stage human cancers were screened for altered levels of STAMP mRNA. Those cancers with the greatest apparent changes in STAMP mRNA were pursued in cultured cancer cell lines. RESULTS Higher levels of STAMP are shown to have the physiologically relevant function of reducing the growth of HEK293 cells but, unexpectedly, in a steroid-independent manner. STAMP expression was examined in eight human cancer panels. More extensive studies of ovarian cancers suggested the presence of higher levels of STAMP mRNA. Lowering STAMP mRNA levels with siRNAs alters the proliferation of several ovarian cancer tissue culture lines in a cell line-specific manner. This cell line-specific effect of STAMP is not unique and is also seen for the conventional effects of STAMP on glucocorticoid receptor-regulated gene transactivation. CONCLUSIONS This study indicates that a physiological function of STAMP in several settings is to modify cell growth rates in a manner that can be independent of steroid hormones. Studies with eleven tissue culture cell lines of ovarian cancer revealed a cell line-dependent effect of reduced STAMP mRNA on cell growth rates. This cell-line dependency is also seen for STAMP effects on glucocorticoid receptor-mediated transactivation. These preliminary findings suggest that further studies of STAMP in ovarian cancer may yield insight into ovarian cancer proliferation and may be useful in the development of biomarker panels.
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Affiliation(s)
- Yuanzheng He
- Steroid Hormones Section, Clinical Endocrinology Branch, NIDDK, National Institutes of Health, Bethesda, MD 20892-1772, USA
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Abstract
The state of modification of histone tails plays an important role in defining the accessibility of DNA for the transcription machinery and other regulatory factors. It has been extensively demonstrated that the posttranslational modifications of the histone tails, as well as modifications within the nucleosome domain, regulate the level of chromatin condensation and are therefore important in regulating gene expression and other nuclear events. Together with DNA methylation, they constitute the most relevant level of epigenetic regulation of cell functions. Histone modifications are carried out by a multipart network of macromolecular complexes endowed with enzymatic, regulatory, and recognition domains. Not surprisingly, epigenetic alterations caused by aberrant activity of these enzymes are linked to the establishment and maintenance of the cancer phenotype and, importantly, are potentially reversible, since they do not involve genetic mutations in the underlying DNA sequence. Histone modification therapy of cancer is based on the generation of drugs able to interfere with the activity of enzymes involved in histone modifications: new drugs have recently been approved for use in cancer patients, clinically validating this strategy. Unfortunately, however, clinical responses are not always consistent and do not parallel closely the results observed in preclinical models. Here, we present a brief overview of the deregulation of chromatin-associated enzymatic activities in cancer cells and of the main results achieved by histone modification therapeutic approaches.
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Affiliation(s)
- Chiara Biancotto
- Department of Experimental Oncology, European Institute of Oncology, Via Adamello 16, Milan, Italy
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Doulatov S, Notta F, Rice KL, Howell L, Zelent A, Licht JD, Dick JE. PLZF is a regulator of homeostatic and cytokine-induced myeloid development. Genes Dev 2009; 23:2076-87. [PMID: 19723763 DOI: 10.1101/gad.1788109] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A major question in hematopoiesis is how the system maintains long-term homeostasis whereby the generation of large numbers of differentiated cells is balanced with the requirement for maintenance of progenitor pools, while remaining sufficiently flexible to respond to periods of perturbed cellular output during infection or stress. We focused on the development of the myeloid lineage and present evidence that promyelocytic leukemia zinc finger (PLZF) provides a novel function that is critical for both normal and stress-induced myelopoiesis. During homeostasis, PLZF restricts proliferation and differentiation of human cord blood-derived myeloid progenitors to maintain a balance between the progenitor and mature cell compartments. Analysis of PLZF promoter-binding sites revealed that it represses transcription factors involved in normal myeloid differentiation, including GFI-1, C/EBPalpha, and LEF-1, and induces negative regulators DUSP6 and ID2. Loss of ID2 relieves PLZF-mediated repression of differentiation identifying it as a functional target of PLZF in myelopoiesis. Furthermore, induction of ERK1/2 by myeloid cytokines, reflective of a stress response, leads to nuclear export and inactivation of PLZF, which augments mature cell production. Thus, negative regulators of differentiation can serve to maintain developmental systems in a primed state, so that their inactivation by extrinsic signals can induce proliferation and differentiation to rapidly satisfy increased demand for mature cells.
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Affiliation(s)
- Sergei Doulatov
- Division of Cell and Molecular Biology, University Health Network, Toronto, Ontario M5G 1L7, Canada
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