1
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Hansen AM, Ge Y, Schuster MB, Pundhir S, Jakobsen JS, Kalvisa A, Tapia MC, Gordon S, Ambri F, Bagger FO, Pandey D, Helin K, Porse BT. H3K9 dimethylation safeguards cancer cells against activation of the interferon pathway. SCIENCE ADVANCES 2022; 8:eabf8627. [PMID: 35302840 PMCID: PMC8932663 DOI: 10.1126/sciadv.abf8627] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Activation of interferon genes constitutes an important anticancer pathway able to restrict proliferation of cancer cells. Here, we demonstrate that the H3K9me3 histone methyltransferase (HMT) suppressor of variegation 3-9 homolog 1 (SUV39H1) is required for the proliferation of acute myeloid leukemia (AML) and find that its loss leads to activation of the interferon pathway. Mechanistically, we show that this occurs via destabilization of a complex composed of SUV39H1 and the two H3K9me2 HMTs, G9A and GLP. Indeed, loss of H3K9me2 correlated with the activation of key interferon pathway genes, and interference with the activities of G9A/GLP largely phenocopied loss of SUV39H1. Last, we demonstrate that inhibition of G9A/GLP synergized with DNA demethylating agents and that SUV39H1 constitutes a potential biomarker for the response to hypomethylation treatment. Collectively, we uncovered a clinically relevant role for H3K9me2 in safeguarding cancer cells against activation of the interferon pathway.
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Affiliation(s)
- Anne Meldgaard Hansen
- The Finsen Laboratory, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Ying Ge
- The Finsen Laboratory, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Mikkel Bruhn Schuster
- The Finsen Laboratory, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Sachin Pundhir
- The Finsen Laboratory, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Janus Schou Jakobsen
- The Finsen Laboratory, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Adrija Kalvisa
- The Finsen Laboratory, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Marta Cecylia Tapia
- The Finsen Laboratory, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Sandra Gordon
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Francesca Ambri
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Frederik Otzen Bagger
- The Finsen Laboratory, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Center for Genomic Medicine, Copenhagen University Hospital, Copenhagen, Denmark
| | - Deo Pandey
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Microbiology, Oslo University Hospital, NO-0373 Oslo, Norway
| | - Kristian Helin
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Cell Biology Program and Center for Epigenetics Research, Memorial Sloan Kettering Center, New York, NY 10065, USA
- The Institute of Cancer Research, London SW3 6JB, United Kingdom
| | - Bo Torben Porse
- The Finsen Laboratory, Rigshospitalet, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
- Biotech Research and Innovation Center (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
- Novo Nordisk Foundation Center for Stem Cell Biology, DanStem, Faculty of Health Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
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2
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Van de Walle T, Cools L, Mangelinckx S, D'hooghe M. Recent contributions of quinolines to antimalarial and anticancer drug discovery research. Eur J Med Chem 2021; 226:113865. [PMID: 34655985 DOI: 10.1016/j.ejmech.2021.113865] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 09/01/2021] [Accepted: 09/20/2021] [Indexed: 12/28/2022]
Abstract
Quinoline, a privileged scaffold in medicinal chemistry, has always been associated with a multitude of biological activities. Especially in antimalarial and anticancer research, quinoline played (and still plays) a central role, giving rise to the development of an array of quinoline-containing pharmaceuticals in these therapeutic areas. However, both diseases still affect millions of people every year, pointing to the necessity of new therapies. Quinolines have a long-standing history as antimalarial agents, but established quinoline-containing antimalarial drugs are now facing widespread resistance of the Plasmodium parasite. Nevertheless, as evidenced by a massive number of recent literature contributions, they are still of great value for future developments in this field. On the other hand, the number of currently approved anticancer drugs containing a quinoline scaffold are limited, but a strong increase and interest in quinoline compounds as potential anticancer agents can be seen in the last few years. In this review, a literature overview of recent contributions made by quinoline-containing compounds as potent antimalarial or anticancer agents is provided, covering publications between 2018 and 2020.
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Affiliation(s)
- Tim Van de Walle
- SynBioC Research Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Lore Cools
- SynBioC Research Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Sven Mangelinckx
- SynBioC Research Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Matthias D'hooghe
- SynBioC Research Group, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium.
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3
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Das AB, Seddon AR, O'Connor KM, Hampton MB. Regulation of the epigenetic landscape by immune cell oxidants. Free Radic Biol Med 2021; 170:131-149. [PMID: 33444713 DOI: 10.1016/j.freeradbiomed.2020.12.453] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/21/2020] [Accepted: 12/30/2020] [Indexed: 12/13/2022]
Abstract
Excessive production of microbicidal oxidants by neutrophils can damage host tissue. The short-term response of cells to oxidative stress is well understood, but the mechanisms behind long-term consequences require further clarification. Epigenetic pathways mediate cellular adaptation, and are therefore a potential target of oxidative stress. Indeed, there is evidence that many proteins and metabolites involved in epigenetic pathways are redox sensitive. In this review we provide an overview of the epigenetic landscape and discuss the potential for redox regulation. Using this information, we highlight specific examples where neutrophil oxidants react with epigenetic pathway components. We also use published data from redox proteomics to map out known intersections between oxidative stress and epigenetics that may signpost helpful directions for future investigation. Finally, we discuss the role neutrophils play in adaptive pathologies with a focus on tumour initiation and progression. We hope this information will stimulate further discourse on the emerging field of redox epigenomics.
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Affiliation(s)
- Andrew B Das
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand.
| | - Annika R Seddon
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand.
| | - Karina M O'Connor
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand.
| | - Mark B Hampton
- Centre for Free Radical Research, Department of Pathology and Biomedical Science, University of Otago, Christchurch, New Zealand.
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4
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Mourits VP, van Puffelen JH, Novakovic B, Bruno M, Ferreira AV, Arts RJ, Groh L, Crișan TO, Zwaag J, Jentho E, Kox M, Pickkers P, van de Veerdonk FL, Weis S, Oosterwijk E, Vermeulen SH, Netea MG, Joosten LA. Lysine methyltransferase G9a is an important modulator of trained immunity. Clin Transl Immunology 2021; 10:e1253. [PMID: 33708384 PMCID: PMC7890679 DOI: 10.1002/cti2.1253] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/22/2020] [Accepted: 01/22/2021] [Indexed: 12/25/2022] Open
Abstract
Objectives Histone methyltransferase G9a, also known as Euchromatic Histone Lysine Methyltransferase 2 (EHMT2), mediates H3K9 methylation which is associated with transcriptional repression. It possesses immunomodulatory effects and is overexpressed in multiple types of cancer. In this study, we investigated the role of G9a in the induction of trained immunity, a de facto innate immune memory, and its effects in non‐muscle‐invasive bladder cancer (NMIBC) patients treated with intravesical Bacillus Calmette‐Guérin (BCG). Methods EHMT2 expression was assessed upon induction of trained immunity by RNA sequencing and Western blotting. G9a inhibitor BIX‐01294 was used to investigate the effect on trained immunity responses in vitro. Subsequent cytokine production was measured by ELISA, epigenetic modifications were measured by ChIP‐qPCR, Seahorse technology was used to measure metabolic changes, and a luminescence assay was used to measure ROS release. RNA sequencing was performed on BIX‐01294‐treated monocytes ex vivo. Results The expression of EHMT2 mRNA and protein decreased in monocytes during induction of trained immunity. G9a inhibition by BIX‐01294 induced trained immunity and amplified trained immunity responses evoked by various microbial ligands in vitro. This was accompanied by decreased H3K9me2 at the promoters of pro‐inflammatory genes. G9a inhibition was also associated with amplified ex vivo trained immunity responses in circulating monocytes of NMIBC patients. Additionally, altered RNA expression of inflammatory genes in monocytes of NMIBC patients was observed upon ex vivo G9a inhibition. Furthermore, intravesical BCG therapy decreased H3K9me2 at the promoter of pro‐inflammatory genes. Conclusion Inhibition of G9a is important in the induction of trained immunity, and G9a may represent a novel therapeutic target in NMIBC patients.
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Affiliation(s)
- Vera P Mourits
- Department of Internal Medicine Radboud Center for Infectious Diseases (RCI) Radboud University Medical Center Nijmegen The Netherlands
| | - Jelmer H van Puffelen
- Department of Internal Medicine Radboud Center for Infectious Diseases (RCI) Radboud University Medical Center Nijmegen The Netherlands.,Department for Health Evidence Radboud University Medical Center Nijmegen The Netherlands
| | - Boris Novakovic
- Epigenetics Research Murdoch Children's Research Institute Parkville VIC Australia.,Department of Paediatrics University of Melbourne Melbourne VIC Australia
| | - Mariolina Bruno
- Department of Internal Medicine Radboud Center for Infectious Diseases (RCI) Radboud University Medical Center Nijmegen The Netherlands
| | - Anaísa V Ferreira
- Department of Internal Medicine Radboud Center for Infectious Diseases (RCI) Radboud University Medical Center Nijmegen The Netherlands.,Instituto de Ciências Biomédicas Abel Salazar (ICBAS) Universidade do Porto Porto Portugal
| | - Rob Jw Arts
- Department of Internal Medicine Radboud Center for Infectious Diseases (RCI) Radboud University Medical Center Nijmegen The Netherlands
| | - Laszlo Groh
- Department of Internal Medicine Radboud Center for Infectious Diseases (RCI) Radboud University Medical Center Nijmegen The Netherlands
| | - Tania O Crișan
- Department of Medical Genetics Iuliu Hațieganu University of Medicine and Pharmacy Cluj-Napoca Romania
| | - Jelle Zwaag
- Department of Intensive Care and Radboud Center for Infectious diseases (RCI) Radboud University Nijmegen Medical Centre Nijmegen The Netherlands
| | - Elisa Jentho
- Department of Anesthesiology and Intensive Care Medicine Jena University Hospital Friedrich-Schiller University Jena Germany.,Instituto Gulbenkian de Ciência Oeiras Portugal
| | - Matthijs Kox
- Department of Intensive Care and Radboud Center for Infectious diseases (RCI) Radboud University Nijmegen Medical Centre Nijmegen The Netherlands
| | - Peter Pickkers
- Department of Intensive Care and Radboud Center for Infectious diseases (RCI) Radboud University Nijmegen Medical Centre Nijmegen The Netherlands
| | - Frank L van de Veerdonk
- Department of Internal Medicine Radboud Center for Infectious Diseases (RCI) Radboud University Medical Center Nijmegen The Netherlands
| | - Sebastian Weis
- Department of Anesthesiology and Intensive Care Medicine Jena University Hospital Friedrich-Schiller University Jena Germany.,Institute for Infectious Disease and Infection Control Jena University Hospital Friedrich-Schiller University Jena Germany
| | - Egbert Oosterwijk
- Department of Urology Radboud University Nijmegen Medical Centre Nijmegen The Netherlands
| | - Sita H Vermeulen
- Department for Health Evidence Radboud University Medical Center Nijmegen The Netherlands
| | - Mihai G Netea
- Department of Internal Medicine Radboud Center for Infectious Diseases (RCI) Radboud University Medical Center Nijmegen The Netherlands.,Department for Genomics & Immunoregulation, Life and Medical Sciences Institute (LIMES) University of Bonn Bonn Germany
| | - Leo Ab Joosten
- Department of Internal Medicine Radboud Center for Infectious Diseases (RCI) Radboud University Medical Center Nijmegen The Netherlands.,Department of Medical Genetics Iuliu Hațieganu University of Medicine and Pharmacy Cluj-Napoca Romania
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5
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Gao Y, Yu XF, Chen T. Human endogenous retroviruses in cancer: Expression, regulation and function. Oncol Lett 2020; 21:121. [PMID: 33552242 PMCID: PMC7798031 DOI: 10.3892/ol.2020.12382] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 11/27/2020] [Indexed: 12/16/2022] Open
Abstract
Human endogenous retroviruses (HERVs) are the remnants of ancient retroviruses that infected human germline cells and became integrated into the human genome millions of years ago. Although most of these sequences are incomplete and silent, several potential pathological roles of HERVs have been observed in numerous diseases, such as multiple sclerosis and rheumatoid arthritis, and especially cancer, including breast cancer and pancreatic carcinoma. The present review investigates the expression signatures and complex regulatory mechanisms of HERVs in cancer. The long terminal repeats-driven transcriptional initiation of HERVs are regulated by transcription factors (such as Sp3) and epigenetic modifications (such as DNA methylation), and are influenced by environmental factors (such as ultraviolet radiation). In addition, this review focuses on the dual opposing effects of HERVs in cancer. HERVs can suppress cancer via immune activation; however, they can also promote cancer. HERV env gene serves a prime role in promoting carcinogenesis in certain malignant tumors, including breast cancer, pancreatic cancer, germ cell tumors, leukemia and Kaposi's sarcoma. Also, HERV ENV proteins can promote cancer via immune suppression. Targeting ENV proteins is a potential future antitumor treatment modality.
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Affiliation(s)
- Yuan Gao
- Cancer Institute, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zheijang 310009, P.R. China
| | - Xiao-Fang Yu
- Cancer Institute, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zheijang 310009, P.R. China
| | - Ting Chen
- Cancer Institute, Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zheijang 310009, P.R. China
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6
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Ciechomska IA, Jayaprakash C, Maleszewska M, Kaminska B. Histone Modifying Enzymes and Chromatin Modifiers in Glioma Pathobiology and Therapy Responses. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1202:259-279. [PMID: 32034718 DOI: 10.1007/978-3-030-30651-9_13] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Signal transduction pathways directly communicate and transform chromatin to change the epigenetic landscape and regulate gene expression. Chromatin acts as a dynamic platform of signal integration and storage. Histone modifications and alteration of chromatin structure play the main role in chromatin-based gene expression regulation. Alterations in genes coding for histone modifying enzymes and chromatin modifiers result in malfunction of proteins that regulate chromatin modification and remodeling. Such dysregulations culminate in profound changes in chromatin structure and distorted patterns of gene expression. Gliomagenesis is a multistep process, involving both genetic and epigenetic alterations. Recent applications of next generation sequencing have revealed that many chromatin regulation-related genes, including ATRX, ARID1A, SMARCA4, SMARCA2, SMARCC2, BAF155 and hSNF5 are mutated in gliomas. In this review we summarize newly identified mechanisms affecting expression or functions of selected histone modifying enzymes and chromatin modifiers in gliomas. We focus on selected examples of pathogenic mechanisms involving ATRX, histone methyltransferase G9a, histone acetylases/deacetylases and chromatin remodeling complexes SMARCA2/4. We discuss the impact of selected epigenetics alterations on glioma pathobiology, signaling and therapeutic responses. We assess the attempts of targeting defective pathways with new inhibitors.
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Affiliation(s)
- Iwona A Ciechomska
- Laboratory of Molecular Neurobiology, Neurobiology Center, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Chinchu Jayaprakash
- Laboratory of Molecular Neurobiology, Neurobiology Center, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Marta Maleszewska
- Laboratory of Molecular Neurobiology, Neurobiology Center, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Bozena Kaminska
- Laboratory of Molecular Neurobiology, Neurobiology Center, Nencki Institute of Experimental Biology, Warsaw, Poland.
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7
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Tomaselli D, Lucidi A, Rotili D, Mai A. Epigenetic polypharmacology: A new frontier for epi-drug discovery. Med Res Rev 2020; 40:190-244. [PMID: 31218726 PMCID: PMC6917854 DOI: 10.1002/med.21600] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 05/10/2019] [Accepted: 05/14/2019] [Indexed: 12/11/2022]
Abstract
Recently, despite the great success achieved by the so-called "magic bullets" in the treatment of different diseases through a marked and specific interaction with the target of interest, the pharmacological research is moving toward the development of "molecular network active compounds," embracing the related polypharmacology approach. This strategy was born to overcome the main limitations of the single target therapy leading to a superior therapeutic effect, a decrease of adverse reactions, and a reduction of potential mechanism(s) of drug resistance caused by robustness and redundancy of biological pathways. It has become clear that multifactorial diseases such as cancer, neurological, and inflammatory disorders, may require more complex therapeutic approaches hitting a certain biological system as a whole. Concerning epigenetics, the goal of the multi-epi-target approach consists in the development of small molecules able to simultaneously and (often) reversibly bind different specific epi-targets. To date, two dual histone deacetylase/kinase inhibitors (CUDC-101 and CUDC-907) are in an advanced stage of clinical trials. In the last years, the growing interest in polypharmacology encouraged the publication of high-quality reviews on combination therapy and hybrid molecules. Hence, to update the state-of-the-art of these therapeutic approaches avoiding redundancy, herein we focused only on multiple medication therapies and multitargeting compounds exploiting epigenetic plus nonepigenetic drugs reported in the literature in 2018. In addition, all the multi-epi-target inhibitors known in literature so far, hitting two or more epigenetic targets, have been included.
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Affiliation(s)
- Daniela Tomaselli
- Department of Chemistry and Technologies of Drugs,
“Sapienza” University of Rome, P.le A. Moro 5, 00185 Roma, Italy
| | - Alessia Lucidi
- Department of Chemistry and Technologies of Drugs,
“Sapienza” University of Rome, P.le A. Moro 5, 00185 Roma, Italy
| | - Dante Rotili
- Department of Chemistry and Technologies of Drugs,
“Sapienza” University of Rome, P.le A. Moro 5, 00185 Roma, Italy
| | - Antonello Mai
- Department of Chemistry and Technologies of Drugs,
“Sapienza” University of Rome, P.le A. Moro 5, 00185 Roma, Italy
- Pasteur Institute - Cenci Bolognetti Foundation, Viale
Regina Elena 291, 00161 Roma, Italy
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8
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Milite C, Feoli A, Horton JR, Rescigno D, Cipriano A, Pisapia V, Viviano M, Pepe G, Amendola G, Novellino E, Cosconati S, Cheng X, Castellano S, Sbardella G. Discovery of a Novel Chemotype of Histone Lysine Methyltransferase EHMT1/2 (GLP/G9a) Inhibitors: Rational Design, Synthesis, Biological Evaluation, and Co-crystal Structure. J Med Chem 2019; 62:2666-2689. [PMID: 30753076 DOI: 10.1021/acs.jmedchem.8b02008] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Since the discovery of compound BIX01294 over 10 years ago, only a very limited number of nonquinazoline inhibitors of H3K9-specific methyltransferases G9a and G9a-like protein (GLP) have been reported. Herein, we report the identification of a novel chemotype for G9a/GLP inhibitors, based on the underinvestigated 2-alkyl-5-amino- and 2-aryl-5-amino-substituted 3 H-benzo[ e][1,4]diazepine scaffold. Our research efforts resulted in the identification 12a (EML741), which not only maintained the high in vitro and cellular potency of its quinazoline counterpart, but also displayed improved inhibitory potency against DNA methyltransferase 1, improved selectivity against other methyltransferases, low cell toxicity, and improved apparent permeability values in both parallel artificial membrane permeability assay (PAMPA) and blood-brain barrier-specific PAMPA, and therefore might potentially be a better candidate for animal studies. Finally, the co-crystal structure of GLP in complex with 12a provides the basis for the further development of benzodiazepine-based G9a/GLP inhibitors.
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Affiliation(s)
| | | | - John R Horton
- Department of Molecular and Cellular Oncology , The University of Texas MD Anderson Cancer Center , Houston , Texas 77030 , United States
| | | | | | | | | | | | - Giorgio Amendola
- DiSTABiF , University of Campania "Luigi Vanvitelli" , Via Vivaldi 43 , 81100 Caserta , Italy
| | - Ettore Novellino
- Department of Pharmacy , University Federico II of Naples , Via D. Montesano 49 , 80131 Naples , Italy
| | - Sandro Cosconati
- DiSTABiF , University of Campania "Luigi Vanvitelli" , Via Vivaldi 43 , 81100 Caserta , Italy
| | - Xiaodong Cheng
- Department of Molecular and Cellular Oncology , The University of Texas MD Anderson Cancer Center , Houston , Texas 77030 , United States
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9
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Liu M, Thomas SL, DeWitt AK, Zhou W, Madaj ZB, Ohtani H, Baylin SB, Liang G, Jones PA. Dual Inhibition of DNA and Histone Methyltransferases Increases Viral Mimicry in Ovarian Cancer Cells. Cancer Res 2018; 78:5754-5766. [PMID: 30185548 DOI: 10.1158/0008-5472.can-17-3953] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 06/28/2018] [Accepted: 08/28/2018] [Indexed: 12/24/2022]
Abstract
Ovarian cancer ranks as the most deadly gynecologic cancer, and there is an urgent need to develop more effective therapies. Previous studies have shown that G9A, a histone methyltransferase that catalyzes mono- and dimethylation of histone H3 lysine9, is highly expressed in ovarian cancer tumors, and its overexpression is associated with poor prognosis. Here we report that pharmacologic inhibition of G9A in ovarian cancer cell lines with high levels of G9A expression induces synergistic antitumor effects when combined with the DNA methylation inhibitor (DNMTi) 5-aza-2'-deoxycytidine (5-aza-CdR). These antitumor effects included upregulation of endogenous retroviruses (ERV), activation of the viral defense response, and induction of cell death, which have been termed "viral mimicry" effects induced by DNMTi. G9Ai treatment further reduced H3K9me2 levels within the long terminal repeat regions of ERV, resulting in further increases of ERV expression and enhancing "viral mimicry" effects. In contrast, G9Ai and 5-aza-CdR were not synergistic in cell lines with low basal G9A levels. Taken together, our results suggest that the synergistic effects of combination treatment with DNMTi and G9Ai may serve as a novel therapeutic strategy for patients with ovarian cancer with high levels of G9A expression.Significance: Dual inhibition of DNA methylation and histone H3 lysine 9 dimethylation by 5-aza-CdR and G9Ai results in synergistic upregulation of ERV and induces an antiviral response, serving as a basis for exploring this novel combination treatment in patients with ovarian cancer. Cancer Res; 78(20); 5754-66. ©2018 AACR.
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Affiliation(s)
- Minmin Liu
- Van Andel Research Institute, Grand Rapids, Michigan
| | | | | | - Wanding Zhou
- Van Andel Research Institute, Grand Rapids, Michigan
| | | | | | - Stephen B Baylin
- Van Andel Research Institute, Grand Rapids, Michigan.,Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland
| | - Gangning Liang
- Department of Urology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Peter A Jones
- Van Andel Research Institute, Grand Rapids, Michigan.
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10
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Rabal O, San José-Enériz E, Agirre X, Sánchez-Arias JA, Vilas-Zornoza A, Ugarte A, de Miguel I, Miranda E, Garate L, Fraga M, Santamarina P, Fernandez Perez R, Ordoñez R, Sáez E, Roa S, García-Barchino MJ, Martínez-Climent JA, Liu Y, Wu W, Xu M, Prosper F, Oyarzabal J. Discovery of Reversible DNA Methyltransferase and Lysine Methyltransferase G9a Inhibitors with Antitumoral in Vivo Efficacy. J Med Chem 2018; 61:6518-6545. [PMID: 29953809 DOI: 10.1021/acs.jmedchem.7b01926] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Using knowledge- and structure-based approaches, we designed and synthesized reversible chemical probes that simultaneously inhibit the activity of two epigenetic targets, histone 3 lysine 9 methyltransferase (G9a) and DNA methyltransferases (DNMT), at nanomolar ranges. Enzymatic competition assays confirmed our design strategy: substrate competitive inhibitors. Next, an initial exploration around our hit 11 was pursued to identify an adequate tool compound for in vivo testing. In vitro treatment of different hematological neoplasia cell lines led to the identification of molecules with clear antiproliferative efficacies (GI50 values in the nanomolar range). On the basis of epigenetic functional cellular responses (levels of lysine 9 methylation and 5-methylcytosine), an acceptable therapeutic window (around 1 log unit) and a suitable pharmacokinetic profile, 12 was selected for in vivo proof-of-concept ( Nat. Commun. 2017 , 8 , 15424 ). Herein, 12 achieved a significant in vivo efficacy: 70% overall tumor growth inhibition of a human acute myeloid leukemia (AML) xenograft in a mouse model.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Mario Fraga
- Nanomaterials and Nanotechnology Research Center (CINN-CSIC) , Universidad de Oviedo-Principado de Asturias , Avenida de la Vega, 4-6 , 33940 El Entrego , Spain
| | - Pablo Santamarina
- Nanomaterials and Nanotechnology Research Center (CINN-CSIC) , Universidad de Oviedo-Principado de Asturias , Avenida de la Vega, 4-6 , 33940 El Entrego , Spain
| | - Raul Fernandez Perez
- Nanomaterials and Nanotechnology Research Center (CINN-CSIC) , Universidad de Oviedo-Principado de Asturias , Avenida de la Vega, 4-6 , 33940 El Entrego , Spain
| | | | | | | | | | | | - Yingying Liu
- WuXi Apptec (Tianjin) Co. Ltd., TEDA , No. 111 HuangHai Road, Fourth Avenue , Tianjin 300456 , PR China
| | - Wei Wu
- WuXi Apptec (Tianjin) Co. Ltd., TEDA , No. 111 HuangHai Road, Fourth Avenue , Tianjin 300456 , PR China
| | - Musheng Xu
- WuXi Apptec (Tianjin) Co. Ltd., TEDA , No. 111 HuangHai Road, Fourth Avenue , Tianjin 300456 , PR China
| | - Felipe Prosper
- Departmento de Hematología, Clinica Universidad de Navarra , University of Navarra , Avenida Pio XII 36 , E-31008 Pamplona , Spain
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11
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Rabal O, Sánchez-Arias JA, San José-Enériz E, Agirre X, de Miguel I, Garate L, Miranda E, Sáez E, Roa S, Martínez-Climent JA, Liu Y, Wu W, Xu M, Prosper F, Oyarzabal J. Detailed Exploration around 4-Aminoquinolines Chemical Space to Navigate the Lysine Methyltransferase G9a and DNA Methyltransferase Biological Spaces. J Med Chem 2018; 61:6546-6573. [DOI: 10.1021/acs.jmedchem.7b01925] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Yingying Liu
- WuXi Apptec (Tianjin) Co. Ltd., TEDA, No. 111 HuangHai Road, Fourth Avenue, Tianjin 300456, PR China
| | - Wei Wu
- WuXi Apptec (Tianjin) Co. Ltd., TEDA, No. 111 HuangHai Road, Fourth Avenue, Tianjin 300456, PR China
| | - Musheng Xu
- WuXi Apptec (Tianjin) Co. Ltd., TEDA, No. 111 HuangHai Road, Fourth Avenue, Tianjin 300456, PR China
| | - Felipe Prosper
- Departmento de Hematología, Clinica Universidad de Navarra, University of Navarra, Avenida Pio XII 36, E-31008 Pamplona, Spain
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12
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Hervouet E, Peixoto P, Delage-Mourroux R, Boyer-Guittaut M, Cartron PF. Specific or not specific recruitment of DNMTs for DNA methylation, an epigenetic dilemma. Clin Epigenetics 2018; 10:17. [PMID: 29449903 PMCID: PMC5807744 DOI: 10.1186/s13148-018-0450-y] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 01/30/2018] [Indexed: 11/28/2022] Open
Abstract
Our current view of DNA methylation processes is strongly moving: First, even if it was generally admitted that DNMT3A and DNMT3B are associated with de novo methylation and DNMT1 is associated with inheritance DNA methylation, these distinctions are now not so clear. Secondly, since one decade, many partners of DNMTs have been involved in both the regulation of DNA methylation activity and DNMT recruitment on DNA. The high diversity of interactions and the combination of these interactions let us to subclass the different DNMT-including complexes. For example, the DNMT3L/DNMT3A complex is mainly related to de novo DNA methylation in embryonic states, whereas the DNMT1/PCNA/UHRF1 complex is required for maintaining global DNA methylation following DNA replication. On the opposite to these unspecific DNA methylation machineries (no preferential DNA sequence), some recently identified DNMT-including complexes are recruited on specific DNA sequences. The coexistence of both types of DNA methylation (un/specific) suggests a close cooperation and an orchestration between these systems to maintain genome and epigenome integrities. Deregulation of these systems can lead to pathologic disorders.
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Affiliation(s)
- Eric Hervouet
- INSERM unit 1098, University of Bourgogne Franche-Comté, Besançon, France.,EPIGENExp (EPIgenetics and GENe EXPression Technical Platform), Besançon, France
| | - Paul Peixoto
- INSERM unit 1098, University of Bourgogne Franche-Comté, Besançon, France.,EPIGENExp (EPIgenetics and GENe EXPression Technical Platform), Besançon, France
| | | | | | - Pierre-François Cartron
- 3INSERM unit S1232, University of Nantes, Nantes, France.,4Institut de cancérologie de l'Ouest, Nantes, France.,REpiCGO (Cancéropole Grand-Ouest), Nantes, France.,EpiSAVMEN Networks, Nantes, Région Pays de la Loire France
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13
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San José-Enériz E, Agirre X, Rabal O, Vilas-Zornoza A, Sanchez-Arias JA, Miranda E, Ugarte A, Roa S, Paiva B, Estella-Hermoso de Mendoza A, Alvarez RM, Casares N, Segura V, Martín-Subero JI, Ogi FX, Soule P, Santiveri CM, Campos-Olivas R, Castellano G, de Barrena MGF, Rodriguez-Madoz JR, García-Barchino MJ, Lasarte JJ, Avila MA, Martinez-Climent JA, Oyarzabal J, Prosper F. Discovery of first-in-class reversible dual small molecule inhibitors against G9a and DNMTs in hematological malignancies. Nat Commun 2017; 8:15424. [PMID: 28548080 PMCID: PMC5458547 DOI: 10.1038/ncomms15424] [Citation(s) in RCA: 111] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 03/29/2017] [Indexed: 02/08/2023] Open
Abstract
The indisputable role of epigenetics in cancer and the fact that epigenetic alterations can be reversed have favoured development of epigenetic drugs. In this study, we design and synthesize potent novel, selective and reversible chemical probes that simultaneously inhibit the G9a and DNMTs methyltransferase activity. In vitro treatment of haematological neoplasia (acute myeloid leukaemia-AML, acute lymphoblastic leukaemia-ALL and diffuse large B-cell lymphoma-DLBCL) with the lead compound CM-272, inhibits cell proliferation and promotes apoptosis, inducing interferon-stimulated genes and immunogenic cell death. CM-272 significantly prolongs survival of AML, ALL and DLBCL xenogeneic models. Our results represent the discovery of first-in-class dual inhibitors of G9a/DNMTs and establish this chemical series as a promising therapeutic tool for unmet needs in haematological tumours. Epigenetic drugs are emerging as a powerful therapeutic option for cancer treatment. Here, the authors synthesized selective chemical probes that simultaneously inhibit the G9a and DNMTs methyltransferase activity and demonstrate their anti-tumour activity using in vitro and in vivo models of haematological neoplasia.
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Affiliation(s)
- Edurne San José-Enériz
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Xabier Agirre
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Obdulia Rabal
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research, University of Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Amaia Vilas-Zornoza
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Juan A Sanchez-Arias
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research, University of Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Estibaliz Miranda
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Ana Ugarte
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research, University of Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Sergio Roa
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Bruno Paiva
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Ander Estella-Hermoso de Mendoza
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research, University of Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Rosa María Alvarez
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research, University of Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Noelia Casares
- Area de Terapia Génica y Hepatología, Centro de Investigación Médica Aplicada, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Victor Segura
- Unidad de Bioinformática, Centro de Investigación Médica Aplicada, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - José I Martín-Subero
- Departamento de Fundamentos Clínicos, Universitat de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Centre Esther Koplowitz, C/ Rosello 153 2nd floor 08036 Barcelona, Spain
| | | | - Pierre Soule
- Nanotemper Technologies GmbH, Flößergasse 4, Munich, Germany
| | - Clara M Santiveri
- Spectroscopy and NMR Unit, Spanish National Cancer Research Center (CNIO), C/ Melchor Fernández Almagro, 3 28029 Madrid, Spain
| | - Ramón Campos-Olivas
- Spectroscopy and NMR Unit, Spanish National Cancer Research Center (CNIO), C/ Melchor Fernández Almagro, 3 28029 Madrid, Spain
| | - Giancarlo Castellano
- Departamento de Fundamentos Clínicos, Universitat de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer, Centre Esther Koplowitz, C/ Rosello 153 2nd floor 08036 Barcelona, Spain
| | - Maite Garcia Fernandez de Barrena
- Area de Terapia Génica y Hepatología, Centro de Investigación Médica Aplicada, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Juan Roberto Rodriguez-Madoz
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Maria José García-Barchino
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Juan Jose Lasarte
- Area de Terapia Génica y Hepatología, Centro de Investigación Médica Aplicada, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Matias A Avila
- Area de Terapia Génica y Hepatología, Centro de Investigación Médica Aplicada, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Jose Angel Martinez-Climent
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Julen Oyarzabal
- Small Molecule Discovery Platform, Molecular Therapeutics Program, Center for Applied Medical Research, University of Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain
| | - Felipe Prosper
- Area de Hemato-Oncología, Centro de Investigación Médica Aplicada, IDISNA, Ciberonc, Universidad de Navarra, Avenida Pío XII, 55 31008 Pamplona, Spain.,Departamento de Hematología, Clínica Universidad de Navarra, Universidad de Navarra, Avenida Pío XII, 36 31008 Pamplona, Spain
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14
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Petell CJ, Alabdi L, He M, San Miguel P, Rose R, Gowher H. An epigenetic switch regulates de novo DNA methylation at a subset of pluripotency gene enhancers during embryonic stem cell differentiation. Nucleic Acids Res 2016; 44:7605-17. [PMID: 27179026 PMCID: PMC5027477 DOI: 10.1093/nar/gkw426] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 05/05/2016] [Indexed: 12/30/2022] Open
Abstract
Coordinated regulation of gene expression that involves activation of lineage specific genes and repression of pluripotency genes drives differentiation of embryonic stem cells (ESC). For complete repression of pluripotency genes during ESC differentiation, chromatin at their enhancers is silenced by the activity of the Lsd1-Mi2/NuRD complex. The mechanism/s that regulate DNA methylation at these enhancers are largely unknown. Here, we investigated the affect of the Lsd1-Mi2/NuRD complex on the dynamic regulatory switch that induces the local interaction of histone tails with the Dnmt3 ATRX-DNMT3-DNMT3L (ADD) domain, thus promoting DNA methylation at the enhancers of a subset of pluripotency genes. This is supported by previous structural studies showing a specific interaction between Dnmt3-ADD domain with H3K4 unmethylated histone tails that is disrupted by histone H3K4 methylation and histone acetylation. Our data suggest that Dnmt3a activity is triggered by Lsd1-Mi2/NuRD-mediated histone deacetylation and demethylation at these pluripotency gene enhancers when they are inactivated during mouse ESC differentiation. Using Dnmt3 knockout ESCs and the inhibitors of Lsd1 and p300 histone modifying enzymes during differentiation of E14Tg2A and ZHBTc4 ESCs, our study systematically reveals this mechanism and establishes that Dnmt3a is both reader and effector of the epigenetic state at these target sites.
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Affiliation(s)
| | - Lama Alabdi
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Ming He
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Phillip San Miguel
- DNA Sequencing Core Facility, Purdue University, West Lafayette, IN 47907, USA
| | - Richard Rose
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Humaira Gowher
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA Purdue University Center for Cancer Research, Purdue University, West Lafayette, IN 47907, USA
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15
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Auclair G, Borgel J, Sanz LA, Vallet J, Guibert S, Dumas M, Cavelier P, Girardot M, Forné T, Feil R, Weber M. EHMT2 directs DNA methylation for efficient gene silencing in mouse embryos. Genome Res 2015; 26:192-202. [PMID: 26576615 PMCID: PMC4728372 DOI: 10.1101/gr.198291.115] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 11/13/2015] [Indexed: 12/30/2022]
Abstract
The extent to which histone modifying enzymes contribute to DNA methylation in mammals remains unclear. Previous studies suggested a link between the lysine methyltransferase EHMT2 (also known as G9A and KMT1C) and DNA methylation in the mouse. Here, we used a model of knockout mice to explore the role of EHMT2 in DNA methylation during mouse embryogenesis. The Ehmt2 gene is expressed in epiblast cells but is dispensable for global DNA methylation in embryogenesis. In contrast, EHMT2 regulates DNA methylation at specific sequences that include CpG-rich promoters of germline-specific genes. These loci are bound by EHMT2 in embryonic cells, are marked by H3K9 dimethylation, and have strongly reduced DNA methylation in Ehmt2−/− embryos. EHMT2 also plays a role in the maintenance of germline-derived DNA methylation at one imprinted locus, the Slc38a4 gene. Finally, we show that DNA methylation is instrumental for EHMT2-mediated gene silencing in embryogenesis. Our findings identify EHMT2 as a critical factor that facilitates repressive DNA methylation at specific genomic loci during mammalian development.
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Affiliation(s)
- Ghislain Auclair
- CNRS, University of Strasbourg, UMR7242 Biotechnology and Cell Signaling, 67412 Illkirch, France
| | - Julie Borgel
- Institute of Molecular Genetics, CNRS UMR5535, University of Montpellier, 34293 Montpellier, France
| | - Lionel A Sanz
- Institute of Molecular Genetics, CNRS UMR5535, University of Montpellier, 34293 Montpellier, France
| | - Judith Vallet
- CNRS, University of Strasbourg, UMR7242 Biotechnology and Cell Signaling, 67412 Illkirch, France
| | - Sylvain Guibert
- CNRS, University of Strasbourg, UMR7242 Biotechnology and Cell Signaling, 67412 Illkirch, France
| | - Michael Dumas
- CNRS, University of Strasbourg, UMR7242 Biotechnology and Cell Signaling, 67412 Illkirch, France
| | - Patricia Cavelier
- Institute of Molecular Genetics, CNRS UMR5535, University of Montpellier, 34293 Montpellier, France
| | - Michael Girardot
- Institute of Molecular Genetics, CNRS UMR5535, University of Montpellier, 34293 Montpellier, France
| | - Thierry Forné
- Institute of Molecular Genetics, CNRS UMR5535, University of Montpellier, 34293 Montpellier, France
| | - Robert Feil
- Institute of Molecular Genetics, CNRS UMR5535, University of Montpellier, 34293 Montpellier, France
| | - Michael Weber
- CNRS, University of Strasbourg, UMR7242 Biotechnology and Cell Signaling, 67412 Illkirch, France
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16
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Tao H, Shi KH, Yang JJ, Huang C, Liu LP, Li J. Epigenetic regulation of cardiac fibrosis. Cell Signal 2013; 25:1932-8. [PMID: 23602934 DOI: 10.1016/j.cellsig.2013.03.024] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Revised: 03/01/2013] [Accepted: 03/28/2013] [Indexed: 02/05/2023]
Abstract
Cardiac fibrosis is characterized by excessive extracellular matrix accumulation that ultimately destroys tissue architecture and eventually abolishes normal function. In recent years, despite the underlying mechanisms of cardiac fibrosis are still unknown, numerous studies suggest that epigenetic modifications impact on the development of cardiac fibrosis. Epigenetic modifications control cell proliferation, differentiation, migration, and so on. Epigenetic modifications contain three main processes: DNA methylation, histone modifications, and silencing by microRNAs. We here outline the recent work pertaining to epigenetic changes in cardiac fibrosis. This review focuses on the epigenetic regulation of cardiac fibrosis.
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Affiliation(s)
- Hui Tao
- Department of Cardiothoracic Surgery, The Second Hospital of Anhui Medical University, Hefei 230601, China
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17
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Hassler MR, Egger G. Epigenomics of cancer - emerging new concepts. Biochimie 2012; 94:2219-30. [PMID: 22609632 PMCID: PMC3480634 DOI: 10.1016/j.biochi.2012.05.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Accepted: 05/09/2012] [Indexed: 02/06/2023]
Abstract
The complexity of the mammalian genome is regulated by heritable epigenetic mechanisms, which provide the basis for differentiation, development and cellular homeostasis. These mechanisms act on the level of chromatin, by modifying DNA, histone proteins and nucleosome density/composition. During the last decade it became clear that cancer is defined by a variety of epigenetic changes, which occur in early stages of disease and parallel genetic mutations. With the advent of new technologies we are just starting to unravel the cancer epigenome and latest mechanistic findings provide the first clue as to how altered epigenetic patterns might occur in different cancers. Here we review latest findings on chromatin related mechanisms and hypothesize how their impairment might contribute to the altered epigenome of cancer cells.
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Affiliation(s)
- Melanie R. Hassler
- Clinical Institute of Pathology, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria
- Department of Internal Medicine I, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria
| | - Gerda Egger
- Clinical Institute of Pathology, Medical University of Vienna, Waehringer Guertel 18-20, A-1090 Vienna, Austria
- Corresponding author. Tel.: +43 1 40400 6389; fax: +43 1 40400 5179.
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