251
|
Itoh Y. Chemical Protein Degradation Approach and its Application to Epigenetic Targets. CHEM REC 2018; 18:1681-1700. [PMID: 29893461 DOI: 10.1002/tcr.201800032] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 05/24/2018] [Indexed: 12/17/2022]
Abstract
In addition to traditional drugs, such as enzyme inhibitors, receptor agonists/antagonists, and protein-protein interaction inhibitors as well as genetic technology, such as RNA interference and the CRISPR/Cas9 system, protein knockdown approaches using proteolysis-targeting chimeras (PROTACs) have attracted much attention. PROTACs, which induce selective degradation of their target protein via the ubiquitin-proteasome system, are useful for the down-regulation of various proteins, including disease-related proteins and epigenetic proteins. Recent reports have shown that chemical protein knockdown is possible not only in cells, but also in vivo and this approach is expected to be used as the therapeutic strategy for several diseases. Thus, this approach may be a significant technique to complement traditional drugs and genetic ablation and will be more widely used for drug discovery and chemical biology studies in the future. In this personal account, a history of chemical protein knockdown is introduced, and its features, recent progress in the epigenetics field, and future outlooks are discussed.
Collapse
Affiliation(s)
- Yukihiro Itoh
- Department of Chemistry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 1-5 Shimogamohangi-cho, Sakyo-ku, Kyoto, 606-0823, Japan
| |
Collapse
|
252
|
Punzi G, Bharadwaj R, Ursini G. Neuroepigenetics of Schizophrenia. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2018; 158:195-226. [PMID: 30072054 DOI: 10.1016/bs.pmbts.2018.04.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Schizophrenia is a complex disorder of the brain, where genetic variants explain only a portion of risk. Neuroepigenetic mechanisms may explain the remaining share of risk, as well as the transition from susceptibility to the actual disease. Here, we discuss the most recent findings in the field of brain epigenetics applied to the study of schizophrenia. Methylome studies have found several candidates exhibiting methylation modifications in association with the disorder, but genes affected do not always overlap. Notably, these studies converge in that genes within the schizophrenia risk loci or genes differentially methylated in patients affected with the disorder are dynamically regulated during early life. They also imply that schizophrenia-associated genetic variation may affect DNA methylation in fetal and adult brains. Histone modifications may help mediating the effect of genetic risk variants associated with schizophrenia, and regulating chromatin higher-order structure. The 3D-organization of chromatin in the brain creates physical interactions within chromosomes, so that schizophrenia-associated genetic variants can be linked with genes distant from their loci; this suggests that chromatin conformation matters in the mechanism of risk for the disorder. Non-coding RNAs provide a novel and complex mechanism of gene regulation potentially significant for schizophrenia, as proposed by research on specific microRNAs and long non-coding RNAs (lncRNAs). Finally, a recent study in epitranscriptomics identifies RNA methylation as a further epigenetic mechanism active in human brain and specifically in a portion of the transcriptome associated with schizophrenia susceptibility. These findings indicate that, as expected from the complexity of the brain and its development, several epigenetic mechanisms may intervene in the etiopathogenesis of schizophrenia. An understanding of their roles calls for research approaches integrating the investigation of different epigenetic mechanisms and of environmental and genetic risk, in the context of development.
Collapse
Affiliation(s)
- Giovanna Punzi
- Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, United States
| | - Rahul Bharadwaj
- Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, United States
| | - Gianluca Ursini
- Lieber Institute for Brain Development, Johns Hopkins Medical Campus, Baltimore, MD, United States; Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, United States.
| |
Collapse
|
253
|
Targeting lysine specific demethylase 4A (KDM4A) tandem TUDOR domain – A fragment based approach. Bioorg Med Chem Lett 2018; 28:1708-1713. [DOI: 10.1016/j.bmcl.2018.04.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 12/12/2022]
|
254
|
Chen G, Cao M, Luo K, Wang L, Wen P, Shi S. ProAcePred: prokaryote lysine acetylation sites prediction based on elastic net feature optimization. Bioinformatics 2018; 34:3999-4006. [DOI: 10.1093/bioinformatics/bty444] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 05/30/2018] [Indexed: 02/02/2023] Open
Affiliation(s)
- Guodong Chen
- Department of Mathematics and Numerical Simulation and High-Performance Computing Laboratory, School of Sciences
| | - Man Cao
- Department of Mathematics and Numerical Simulation and High-Performance Computing Laboratory, School of Sciences
| | - Kun Luo
- Department of Mathematics and Numerical Simulation and High-Performance Computing Laboratory, School of Sciences
| | - Lina Wang
- Department of Chemistry, College of Chemistry, Nanchang University, Nanchang, China
| | - Pingping Wen
- Department of Chemistry, College of Chemistry, Nanchang University, Nanchang, China
| | - Shaoping Shi
- Department of Mathematics and Numerical Simulation and High-Performance Computing Laboratory, School of Sciences
| |
Collapse
|
255
|
Marando L, Huntly BJP. Hematopoietic stem cells made BETter by inhibition. Haematologica 2018; 103:919-921. [PMID: 29866885 PMCID: PMC6058785 DOI: 10.3324/haematol.2018.193706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Ludovica Marando
- Wellcome Trust-MRC Cambridge Stem Cell Institute, UK
- Department of Haematology, University of Cambridge, UK
- Cambridge Institute for Medical Research, Cambridge Biomedical Campus, UK
| | - Brian J P Huntly
- Wellcome Trust-MRC Cambridge Stem Cell Institute, UK
- Department of Haematology, University of Cambridge, UK
- Cambridge Institute for Medical Research, Cambridge Biomedical Campus, UK
| |
Collapse
|
256
|
Cheung P, Vallania F, Warsinske HC, Donato M, Schaffert S, Chang SE, Dvorak M, Dekker CL, Davis MM, Utz PJ, Khatri P, Kuo AJ. Single-Cell Chromatin Modification Profiling Reveals Increased Epigenetic Variations with Aging. Cell 2018; 173:1385-1397.e14. [PMID: 29706550 PMCID: PMC5984186 DOI: 10.1016/j.cell.2018.03.079] [Citation(s) in RCA: 214] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 02/27/2018] [Accepted: 03/28/2018] [Indexed: 12/17/2022]
Abstract
Post-translational modifications of histone proteins and exchanges of histone variants of chromatin are central to the regulation of nearly all DNA-templated biological processes. However, the degree and variability of chromatin modifications in specific human immune cells remain largely unknown. Here, we employ a highly multiplexed mass cytometry analysis to profile the global levels of a broad array of chromatin modifications in primary human immune cells at the single-cell level. Our data reveal markedly different cell-type- and hematopoietic-lineage-specific chromatin modification patterns. Differential analysis between younger and older adults shows that aging is associated with increased heterogeneity between individuals and elevated cell-to-cell variability in chromatin modifications. Analysis of a twin cohort unveils heritability of chromatin modifications and demonstrates that aging-related chromatin alterations are predominantly driven by non-heritable influences. Together, we present a powerful platform for chromatin and immunology research. Our discoveries highlight the profound impacts of aging on chromatin modifications.
Collapse
Affiliation(s)
- Peggie Cheung
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Francesco Vallania
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Biomedical Informatics Research, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Hayley C Warsinske
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Biomedical Informatics Research, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Michele Donato
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Biomedical Informatics Research, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Steven Schaffert
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Biomedical Informatics Research, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Sarah E Chang
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Mai Dvorak
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Cornelia L Dekker
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Mark M Davis
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94304, USA; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94304, USA
| | - Paul J Utz
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Purvesh Khatri
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Biomedical Informatics Research, Stanford University School of Medicine, Stanford, CA 94305, USA.
| | - Alex J Kuo
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, CA 94305, USA; Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA 94305, USA.
| |
Collapse
|
257
|
Liu J, Zhang S, Liu M, Liu Y, Nshogoza G, Gao J, Ma R, Yang Y, Wu J, Zhang J, Li F, Ruan K. Structural plasticity of the TDRD3 Tudor domain probed by a fragment screening hit. FEBS J 2018; 285:2091-2103. [DOI: 10.1111/febs.14469] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/21/2018] [Accepted: 04/05/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Jiuyang Liu
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Shuya Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Mingqing Liu
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Yaqian Liu
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Gilbert Nshogoza
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Jia Gao
- Center of Medical Physics and Technology Hefei Institute of Physical Science Chinese Academy of Science Hefei China
| | - Rongsheng Ma
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Yang Yang
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Jihui Wu
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Jiahai Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Fudong Li
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| | - Ke Ruan
- Hefei National Laboratory for Physical Sciences at the Microscale School of Life Sciences University of Science and Technology of China Hefei China
| |
Collapse
|
258
|
Amato A, Lucas X, Bortoluzzi A, Wright D, Ciulli A. Targeting Ligandable Pockets on Plant Homeodomain (PHD) Zinc Finger Domains by a Fragment-Based Approach. ACS Chem Biol 2018. [PMID: 29529862 PMCID: PMC5913730 DOI: 10.1021/acschembio.7b01093] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Plant homeodomain (PHD) zinc fingers are histone reader domains that are often associated with human diseases. Despite this, they constitute a poorly targeted class of readers, suggesting low ligandability. Here, we describe a successful fragment-based campaign targeting PHD fingers from the proteins BAZ2A and BAZ2B as model systems. We validated a pool of in silico fragments both biophysically and structurally and solved the first crystal structures of PHD zinc fingers in complex with fragments bound to an anchoring pocket at the histone binding site. The best-validated hits were found to displace a histone H3 tail peptide in competition assays. This work identifies new chemical scaffolds that provide suitable starting points for future ligand optimization using structure-guided approaches. The demonstrated ligandability of the PHD reader domains could pave the way for the development of chemical probes to drug this family of epigenetic readers.
Collapse
Affiliation(s)
- Anastasia Amato
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dow Street, Dundee DD1 5EH, United Kingdom
| | - Xavier Lucas
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dow Street, Dundee DD1 5EH, United Kingdom
| | - Alessio Bortoluzzi
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dow Street, Dundee DD1 5EH, United Kingdom
| | - David Wright
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dow Street, Dundee DD1 5EH, United Kingdom
| | - Alessio Ciulli
- Division of Biological Chemistry and Drug Discovery, School of Life Sciences, University of Dundee, James Black Centre, Dow Street, Dundee DD1 5EH, United Kingdom
| |
Collapse
|
259
|
Abhishek S, Nivya MA, Nakarakanti NK, Deeksha W, Khosla S, Rajakumara E. Biochemical and dynamic basis for combinatorial recognition of H3R2K9me2 by dual domains of UHRF1. Biochimie 2018; 149:105-114. [PMID: 29656054 DOI: 10.1016/j.biochi.2018.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Accepted: 04/10/2018] [Indexed: 01/10/2023]
Abstract
UHRF1 is a multi-domain protein comprising of a tandem tudor (UHRF1 TTD), a PHD finger, and a SET and RING-associated domain. It is required for the maintenance of CG methylation, heterochromatin formation and DNA repair. Isothermal titration calorimetry binding studies of unmodified and methylated lysine histone peptides establish that the UHRF1 TTD binds dimethylated Lys9 on histone H3 (H3K9me2). Further, MD simulation and binding studies reveal that TTD-PHD of UHRF1 (UHRF1 TTD-PHD) preferentially recognizes dimethyl-lysine status. Importantly, we show that Asp145 in the binding pocket determines the preferential recognition of the dimethyl-ammonium group of H3K9me2. Interestingly, PHD finger of the UHRF1 TTD-PHD has a negligible contribution to the binding affinity for recognition of K9me2 by the UHRF1 TTD. Surprisingly, Lys4 methylation on H3 peptide has an insignificant effect on combinatorial recognition of R2 and K9me2 on H3 by the UHRF1 TTD-PHD. We propose that subtle variations of key residues at the binding pocket determine status specific recognition of histone methyl-lysines by the reader domains.
Collapse
Affiliation(s)
- Suman Abhishek
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India
| | - M Angel Nivya
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India
| | - Naveen Kumar Nakarakanti
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India
| | - Waghela Deeksha
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India
| | - Sanjeev Khosla
- Centre for DNA Fingerprinting and Diagnostics (CDFD), Hyderabad, 500001, India.
| | - Eerappa Rajakumara
- Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, Telangana, India.
| |
Collapse
|
260
|
Epigenetic Modifications as Biomarkers of Tumor Development, Therapy Response, and Recurrence across the Cancer Care Continuum. Cancers (Basel) 2018; 10:cancers10040101. [PMID: 29614786 PMCID: PMC5923356 DOI: 10.3390/cancers10040101] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/23/2018] [Accepted: 03/27/2018] [Indexed: 02/06/2023] Open
Abstract
Aberrant epigenetic modifications are an early event in carcinogenesis, with the epigenetic landscape continuing to change during tumor progression and metastasis—these observations suggest that specific epigenetic modifications could be used as diagnostic and prognostic biomarkers for many cancer types. DNA methylation, post-translational histone modifications, and non-coding RNAs are all dysregulated in cancer and are detectable to various degrees in liquid biopsies such as sputum, urine, stool, and blood. Here, we will focus on the application of liquid biopsies, as opposed to tissue biopsies, because of their potential as non-invasive diagnostic tools and possible use in monitoring therapy response and progression to metastatic disease. This includes a discussion of septin-9 (SEPT9) DNA hypermethylation for detecting colorectal cancer, which is by far the most developed epigenetic biomarker assay. Despite their potential as prognostic and diagnostic biomarkers, technical issues such as inconsistent methodology between studies, overall low yield of epigenetic material in samples, and the need for improved histone and non-coding RNA purification methods are limiting the use of epigenetic biomarkers. Once these technical limitations are overcome, epigenetic biomarkers could be used to monitor cancer development, disease progression, therapeutic response, and recurrence across the entire cancer care continuum.
Collapse
|
261
|
Zhang Y, Lei M, Yang X, Feng Y, Yang Y, Loppnau P, Li Y, Yang Y, Min J, Liu Y. Structural and histone binding studies of the chromo barrel domain of TIP60. FEBS Lett 2018; 592:1221-1232. [PMID: 29494751 DOI: 10.1002/1873-3468.13021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/20/2018] [Accepted: 02/20/2018] [Indexed: 01/20/2023]
Abstract
Tat-interactive protein 60 consists of an N-terminal chromo barrel domain (TIP60-CB) and a C-terminal acetyltransferase domain and acetylates histone and nonhistone proteins in diverse cellular processes. While TIP60-CB is thought to recognize histone tails, molecular details of this interaction remain unclear. Here, we attempted a quantitative analysis of the interaction between the human TIP60-CB and histone peptides, but did not observe any detectable binding by either fluorescence polarization or isothermal titration calorimetry assays. We also determined the crystal structure of the TIP60-CB alone. Analysis of the apo-structure reveals a putative peptide-binding site that might be occluded by the basic side chain of a residue in a unique β hairpin between the two N-terminal strands of the β barrel, leading to the inability of TIP60-CB to bind histones.
Collapse
Affiliation(s)
- Yuzhe Zhang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
| | - Ming Lei
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China.,Structural Genomics Consortium, University of Toronto, Canada
| | - Xiajie Yang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China
| | - Yue Feng
- Structural Genomics Consortium, University of Toronto, Canada
| | - Yuan Yang
- Graduate school, Wuhan Sports University, China
| | - Peter Loppnau
- Structural Genomics Consortium, University of Toronto, Canada
| | - Yanjun Li
- Structural Genomics Consortium, University of Toronto, Canada
| | - Yi Yang
- College of Health Science, Wuhan Sports University, China
| | - Jinrong Min
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China.,Structural Genomics Consortium, University of Toronto, Canada.,Department of Physiology, University of Toronto, Canada
| | - Yanli Liu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, China.,Structural Genomics Consortium, University of Toronto, Canada
| |
Collapse
|
262
|
Ghobashi AH, Kamel MA. Tip60: updates. J Appl Genet 2018; 59:161-168. [PMID: 29549519 DOI: 10.1007/s13353-018-0432-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/28/2018] [Accepted: 01/31/2018] [Indexed: 12/21/2022]
Abstract
The maintenance of genome integrity is essential for organism survival. Therefore, eukaryotic cells possess many DNA repair mechanisms in response to DNA damage. Acetyltransferase, Tip60, plays a central role in ATM and p53 activation which are involved in DNA repair. Recent works uncovered the roles of Tip60 in ATM and p53 activation and how Tip60 is recruited to double-strand break sites. Moreover, recent works have demonstrated the role of Tip60 in cancer progression. Here, we review the current understanding of how Tip60 activates both ATM and p53 in response to DNA damage and his new roles in tumorigenesis.
Collapse
Affiliation(s)
- Ahmed H Ghobashi
- Human Genetics Department, Medical Research Institute, Alexandria University, 165 El Horreya Street, Alexandria, Egypt.
| | - Maher A Kamel
- Biochemistry Department, Medical Research Institute, Alexandria University, Alexandria, Egypt
| |
Collapse
|
263
|
Mourad R, Ginalski K, Legube G, Cuvier O. Predicting double-strand DNA breaks using epigenome marks or DNA at kilobase resolution. Genome Biol 2018; 19:34. [PMID: 29544533 PMCID: PMC5856001 DOI: 10.1186/s13059-018-1411-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 02/22/2018] [Indexed: 12/18/2022] Open
Abstract
Double-strand breaks (DSBs) result from the attack of both DNA strands by multiple sources, including radiation and chemicals. DSBs can cause the abnormal chromosomal rearrangements associated with cancer. Recent techniques allow the genome-wide mapping of DSBs at high resolution, enabling the comprehensive study of their origins. However, these techniques are costly and challenging. Hence, we devise a computational approach to predict DSBs using the epigenomic and chromatin context, for which public data are readily available from the ENCODE project. We achieve excellent prediction accuracy at high resolution. We identify chromatin accessibility, activity, and long-range contacts as the best predictors.
Collapse
Affiliation(s)
- Raphaël Mourad
- LBME, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 118, route de Narbonne, Toulouse, 31062, France.
| | - Krzysztof Ginalski
- Laboratory of Bioinformatics and Systems Biology, Centre of New Technologies, University of Warsaw, Zwirki i Wigury 93, Warsaw, 02-089, Poland
| | - Gaëlle Legube
- LBCMCP, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 118, route de Narbonne, Toulouse, 31062, France
| | - Olivier Cuvier
- LBME, Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, 118, route de Narbonne, Toulouse, 31062, France
| |
Collapse
|
264
|
Baretti M, Azad NS. The role of epigenetic therapies in colorectal cancer. Curr Probl Cancer 2018; 42:530-547. [PMID: 29625794 DOI: 10.1016/j.currproblcancer.2018.03.001] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 02/21/2018] [Accepted: 03/08/2018] [Indexed: 12/14/2022]
Abstract
Although developments in the diagnosis and therapy of colorectal cancer (CRC) have been made in the last decade, much work remains to be done as it remains the second leading cause of cancer death. It is now well established that epigenetic events, together with genetic alterations, are key events in initiation and progression of CRC. Epigenetics refers to heritable alterations in gene expression that do not involve changes in the DNA sequence. These alterations include DNA methylation, histone alterations, chromatin remodelers, and noncoding RNAs. In CRC, aberrations in epigenome may also involve in the development of drug resistance to conventional drugs such as 5-fluorouracil, oxaliplatin, and irinotecan. Thus, it has been suggested that combined therapies with epigenetic agents may reverse drug resistance. In this regard, DNA methyltransferase inhibitors and histone deacetylase inhibitors have been extensively investigated in CRC. The aim of this review is to provide a brief overview of the preclinical data that represent a proof of principle for the employment of epigenetic agents in CRC with a focus on the advantages of combinatorial therapy over single-drug treatment. We will also critically discuss the results and limitations of initial clinical experiences of epigenetic-based therapy in CRC and summarize ongoing clinical trials. Nevertheless, since recent translational research suggest that epigenetic modulators play a key role in augmenting immunogenicity of the tumor microenvironment and in restoring immune recognition, we will also highlight the recent developments of combinations strategies of immunotherapies and epigenetic therapies in CRC, summarizing preclinical, and clinical data to signify this evolving and promising field for CRC treatment.
Collapse
Affiliation(s)
- Marina Baretti
- The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University.
| | - Nilofer Saba Azad
- The Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University
| |
Collapse
|
265
|
Jakobsson ME, Małecki J, Falnes PØ. Regulation of eukaryotic elongation factor 1 alpha (eEF1A) by dynamic lysine methylation. RNA Biol 2018; 15:314-319. [PMID: 29447067 DOI: 10.1080/15476286.2018.1440875] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Lysine methylation is a frequent post-translational protein modification, which has been intensively studied in the case of histone proteins. Lysine methylations are also found on many non-histone proteins, and one prominent example is eukaryotic elongation factor 1 alpha (eEF1A). Besides its essential role in the protein synthesis machinery, a number of non-canonical functions have also been described for eEF1A, such as regulation of the actin cytoskeleton and the promotion of viral replication. The functional significance of the extensive lysine methylations on eEF1A, as well as the identity of the responsible lysine methyltransferases (KMTs), have until recently remained largely elusive. However, recent discoveries and characterizations of human eEF1A-specific KMTs indicate that lysine methylation of eEF1A can be dynamic and inducible, and modulates mRNA translation in a codon-specific fashion. Here, we give a general overview of eEF1A lysine methylation and discuss its possible functional and regulatory significance, with particular emphasis on newly discovered human KMTs.
Collapse
Affiliation(s)
- Magnus E Jakobsson
- a Department of Biosciences , Faculty of Mathematics and Natural Sciences, University of Oslo , Oslo , Norway.,b Proteomics Program, Faculty of Health and Medical Sciences, Novo Nordisk Foundation Center for Protein Research (NNF-CPR) , University of Copenhagen , Copenhagen , Denmark
| | - Jędrzej Małecki
- a Department of Biosciences , Faculty of Mathematics and Natural Sciences, University of Oslo , Oslo , Norway
| | - Pål Ø Falnes
- a Department of Biosciences , Faculty of Mathematics and Natural Sciences, University of Oslo , Oslo , Norway
| |
Collapse
|
266
|
Luo J, Chen K, Yin P, Li T, Wan G, Zhang J, Ye S, Bi X, Pang Y, Wei Y, Liu T. Effect of Cation-π Interaction on Macroionic Self-Assembly. Angew Chem Int Ed Engl 2018; 57:4067-4072. [PMID: 29441703 DOI: 10.1002/anie.201800409] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Indexed: 01/29/2023]
Abstract
A series of rod-shaped polyoxometalates (POMs) [Bu4 N]7 [Mo6 O18 NC(CH2 O)3 MnMo6 O18 (OCH2 )3 CNMo6 O18 ] and [Bu4 N]7 [ArNMo6 O17 NC(CH2 O)3 MnMo6 O18 (OCH2 )3 CNMo6 O17 NAr] (Ar=2,6-dimethylphenyl, naphthyl and 1-methylnaphthyl) were chosen to study the effects of cation-π interaction on macroionic self-assembly. Diffusion ordered spectroscopy (DOSY) and isothermal titration calorimetry (ITC) techniques show that the binding affinity between the POMs and Zn2+ ions is enhanced significantly after grafting aromatic groups onto the clusters, leading to the effective replacement of tetrabutylammonium counterions (TBAs) upon the addition of ZnCl2 . The incorporation of aromatic groups results in the significant contribution of cation-π interaction to the self-assembly, as confirmed by the opposite trend of assembly size vs. ionic strength when compared with those without aromatic groups. The small difference between two aromatic groups toward the Zn2+ ions is amplified after combining with the clusters, which consequently triggers the self-recognition behavior between two highly similar macroanions.
Collapse
Affiliation(s)
- Jiancheng Luo
- Department of Polymer Science, University of Akron, Akron, OH, 44325, USA
| | - Kun Chen
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Panchao Yin
- Department of Polymer Science, University of Akron, Akron, OH, 44325, USA
| | - Tao Li
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA.,Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, IL, 60115, USA
| | - Gang Wan
- Material Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Jin Zhang
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Songtao Ye
- Department of Polymer Science, University of Akron, Akron, OH, 44325, USA
| | - Xiaoman Bi
- Department of Chemistry, University of Akron, Akron, OH, 44325, USA
| | - Yi Pang
- Department of Chemistry, University of Akron, Akron, OH, 44325, USA
| | - Yongge Wei
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Tianbo Liu
- Department of Polymer Science, University of Akron, Akron, OH, 44325, USA
| |
Collapse
|
267
|
Luo J, Chen K, Yin P, Li T, Wan G, Zhang J, Ye S, Bi X, Pang Y, Wei Y, Liu T. Effect of Cation–π Interaction on Macroionic Self‐Assembly. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800409] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jiancheng Luo
- Department of Polymer Science University of Akron Akron OH 44325 USA
| | - Kun Chen
- Department of Chemistry Tsinghua University Beijing 100084 P. R. China
| | - Panchao Yin
- Department of Polymer Science University of Akron Akron OH 44325 USA
| | - Tao Li
- X-Ray Science Division Advanced Photon Source Argonne National Laboratory Argonne IL 60439 USA
- Department of Chemistry and Biochemistry Northern Illinois University DeKalb IL 60115 USA
| | - Gang Wan
- Material Science Division Argonne National Laboratory Argonne IL 60439 USA
| | - Jin Zhang
- Department of Chemistry Tsinghua University Beijing 100084 P. R. China
| | - Songtao Ye
- Department of Polymer Science University of Akron Akron OH 44325 USA
| | - Xiaoman Bi
- Department of Chemistry University of Akron Akron OH 44325 USA
| | - Yi Pang
- Department of Chemistry University of Akron Akron OH 44325 USA
| | - Yongge Wei
- Department of Chemistry Tsinghua University Beijing 100084 P. R. China
| | - Tianbo Liu
- Department of Polymer Science University of Akron Akron OH 44325 USA
| |
Collapse
|
268
|
Moccia A, Martin DM. Nervous system development and disease: A focus on trithorax related proteins and chromatin remodelers. Mol Cell Neurosci 2018; 87:46-54. [PMID: 29196188 PMCID: PMC5828982 DOI: 10.1016/j.mcn.2017.11.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 11/08/2017] [Accepted: 11/27/2017] [Indexed: 01/12/2023] Open
Abstract
The nervous system comprises many different cell types including neurons, glia, macrophages, and immune cells, each of which is defined by specific patterns of gene expression, morphology, function, and anatomical location. Establishment of these complex and highly regulated cell fates requires spatial and temporal coordination of gene transcription. Open chromatin (euchromatin) allows transcription factors to interact with gene promoters and activate lineage specific genes, whereas closed chromatin (heterochromatin) remains inaccessible to transcriptional activation. Changes in the genome-wide distribution of euchromatin accompany transcriptional plasticity that allows the diversity of mature cell fates to be generated during development. In the past 20years, many new genes and gene families have been identified to participate in regulation of chromatin accessibility. These genes include chromatin remodelers that interact with Trithorax group (TrxG) and Polycomb group (PcG) proteins to activate or repress transcription, respectively. Here we review the role of TrxG proteins in neurodevelopment and disease.
Collapse
Affiliation(s)
- Amanda Moccia
- Department of Human Genetics, The University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Donna M Martin
- Department of Human Genetics, The University of Michigan Medical School, Ann Arbor, MI 48109, United States; Department of Pediatrics and Communicable Diseases, The University of Michigan Medical School, Ann Arbor, MI 48109, United States.
| |
Collapse
|
269
|
Sun Y, Chen BR, Deshpande A. Epigenetic Regulators in the Development, Maintenance, and Therapeutic Targeting of Acute Myeloid Leukemia. Front Oncol 2018. [PMID: 29527516 PMCID: PMC5829038 DOI: 10.3389/fonc.2018.00041] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The importance of epigenetic dysregulation to acute myeloid leukemia (AML) pathophysiology has become increasingly apparent in recent years. Epigenetic regulators, including readers, writers, and erasers, are recurrently dysregulated by way of chromosomal translocations, somatic mutations, or genomic amplification in AML and many of these alterations are directly implicated in AML pathogenesis. Mutations in epigenetic regulators are often discovered in founder clones and persist after therapy, indicating that they may contribute to a premalignant state poised for the acquisition of cooperating mutations and frank malignancy. Apart from the proto-oncogenic impact of these mutations, the AML epigenome is also shaped by other epigenetic factors that are not mutated but co-opted by AML oncogenes, presenting with actionable vulnerabilities in this disease. Targeting the AML epigenome might also be important for eradicating AML leukemia stem cells, which can be critical for disease maintenance and resistance to therapy. In this review, we describe the importance of epigenetic regulators in AML. We also summarize evidence implicating specific epigenetic regulators in AML pathobiology and discuss emerging epigenome-based therapies for the treatment of AML in the clinic.
Collapse
Affiliation(s)
- Younguk Sun
- Tumor Initiation and Maintenance Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, United States
| | - Bo-Rui Chen
- Tumor Initiation and Maintenance Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, United States
| | - Aniruddha Deshpande
- Tumor Initiation and Maintenance Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, United States
| |
Collapse
|
270
|
Cao R, Zhang X, Liu X, Li Y, Li H. Molecular basis for histidine N1 position-specific methylation by CARNMT1. Cell Res 2018; 28:494-496. [PMID: 29463897 DOI: 10.1038/s41422-018-0003-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/07/2017] [Accepted: 12/12/2017] [Indexed: 12/13/2022] Open
Affiliation(s)
- Ruili Cao
- MOE Key Laboratory of Protein Sciences, Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Xingrun Zhang
- MOE Key Laboratory of Protein Sciences, Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Xiaohui Liu
- Lipidomics and Metabolomics Centre, National Protein Science Facility, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Yuanyuan Li
- MOE Key Laboratory of Protein Sciences, Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China
| | - Haitao Li
- MOE Key Laboratory of Protein Sciences, Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, Department of Basic Medical Sciences, School of Medicine, Tsinghua University, Beijing, 100084, China.
| |
Collapse
|
271
|
Shanmugam MK, Arfuso F, Arumugam S, Chinnathambi A, Jinsong B, Warrier S, Wang LZ, Kumar AP, Ahn KS, Sethi G, Lakshmanan M. Role of novel histone modifications in cancer. Oncotarget 2018; 9:11414-11426. [PMID: 29541423 PMCID: PMC5834259 DOI: 10.18632/oncotarget.23356] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 12/01/2017] [Indexed: 01/02/2023] Open
Abstract
Oncogenesis is a multistep process mediated by a variety of factors including epigenetic modifications. Global epigenetic post-translational modifications have been detected in almost all cancers types. Epigenetic changes appear briefly and do not involve permanent changes to the primary DNA sequence. These epigenetic modifications occur in key oncogenes, tumor suppressor genes, and transcription factors, leading to cancer initiation and progression. The most commonly observed epigenetic changes include DNA methylation, histone lysine methylation and demethylation, histone lysine acetylation and deacetylation. However, there are several other novel post-translational modifications that have been observed in recent times such as neddylation, sumoylation, glycosylation, phosphorylation, poly-ADP ribosylation, ubiquitination as well as transcriptional regulation and these have been briefly discussed in this article. We have also highlighted the diverse epigenetic changes that occur during the process of tumorigenesis and described the role of histone modifications that can occur on tumor suppressor genes as well as oncogenes, which regulate tumorigenesis and can thus form the basis of novel strategies for cancer therapy.
Collapse
Affiliation(s)
- Muthu K. Shanmugam
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Frank Arfuso
- Stem Cell and Cancer Biology Laboratory, School of Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA, Australia
| | - Surendar Arumugam
- Institute of Molecular and Cell Biology, A*STAR, Biopolis Drive, Proteos, Singapore, Singapore
| | - Arunachalam Chinnathambi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Bian Jinsong
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Sudha Warrier
- Division of Cancer Stem Cells and Cardiovascular Regeneration, School of Regenerative Medicine, Manipal Academy of Higher Education (MAHE), Bangalore, India
| | - Ling Zhi Wang
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Alan Prem Kumar
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- Curtin Medical School, Faculty of Health Sciences, Curtin University, Perth, WA, Australia
- National University Cancer Institute, National University Health System, Singapore, Singapore
- Department of Biological Sciences, University of North Texas, Denton, Texas, USA
| | - Kwang Seok Ahn
- College of Korean Medicine, Kyung Hee University, Dongdaemun-gu, Seoul, Korea
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Manikandan Lakshmanan
- Institute of Molecular and Cell Biology, A*STAR, Biopolis Drive, Proteos, Singapore, Singapore
- Department of Pathology, National University Hospital Singapore, Singapore, Singapore
| |
Collapse
|
272
|
Patterns of cation binding to the aromatic amino acid R groups in Trp, Tyr, and Phe. Comput Biol Chem 2018; 72:11-15. [DOI: 10.1016/j.compbiolchem.2017.12.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 12/20/2017] [Accepted: 12/26/2017] [Indexed: 11/24/2022]
|
273
|
Ahringer J, Gasser SM. Repressive Chromatin in Caenorhabditis elegans: Establishment, Composition, and Function. Genetics 2018; 208:491-511. [PMID: 29378810 PMCID: PMC5788517 DOI: 10.1534/genetics.117.300386] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 11/18/2017] [Indexed: 01/08/2023] Open
Abstract
Chromatin is organized and compacted in the nucleus through the association of histones and other proteins, which together control genomic activity. Two broad types of chromatin can be distinguished: euchromatin, which is generally transcriptionally active, and heterochromatin, which is repressed. Here we examine the current state of our understanding of repressed chromatin in Caenorhabditis elegans, focusing on roles of histone modifications associated with repression, such as methylation of histone H3 lysine 9 (H3K9me2/3) or the Polycomb Repressive Complex 2 (MES-2/3/6)-deposited modification H3K27me3, and on proteins that recognize these modifications. Proteins involved in chromatin repression are important for development, and have demonstrated roles in nuclear organization, repetitive element silencing, genome integrity, and the regulation of euchromatin. Additionally, chromatin factors participate in repression with small RNA pathways. Recent findings shed light on heterochromatin function and regulation in C. elegans, and should inform our understanding of repressed chromatin in other animals.
Collapse
Affiliation(s)
- Julie Ahringer
- The Gurdon Institute, University of Cambridge CB2 1QN, United Kingdom
- Department of Genetics, University of Cambridge CB2 1QN, United Kingdom
| | - Susan M Gasser
- Friedrich Miescher Institute for Biomedical Research (FMI), 4058 Basel, Switzerland, and
- Faculty of Natural Sciences, University of Basel, 4056, Switzerland
| |
Collapse
|
274
|
Han J, Lachance C, Ricketts MD, McCullough CE, Gerace M, Black BE, Côté J, Marmorstein R. The scaffolding protein JADE1 physically links the acetyltransferase subunit HBO1 with its histone H3-H4 substrate. J Biol Chem 2018; 293:4498-4509. [PMID: 29382722 DOI: 10.1074/jbc.ra117.000677] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 01/23/2018] [Indexed: 12/31/2022] Open
Abstract
The human enzyme histone acetyltransferase binding to ORC1 (HBO1) regulates DNA replication, cell proliferation, and development. HBO1 is part of a multiprotein histone acetyltransferase (HAT) complex that also contains inhibitor of growth family member (ING) 4/5, MYST/Esa1-associated factor (MEAF) 6, and the scaffolding proteins Jade family PHD finger (JADE) 1/2/3 or bromodomain and PHD finger-containing protein (BRPF) 2/3 to acetylate histone H4 H4K5/8/12 or H3K14, respectively. Within this four-protein complex, JADE1 determines histone H4 substrate specificity of the HBO1-HAT complex. However, the mechanism by which JADE1 controls the H4-specific acetyltransferase activity of HBO1 is unknown. Here we used recombinant proteins in vitro to dissect the specific regions and activities of HBO1 and JADE1 that mediate histone H3-H4 acetylation via the HBO1-HAT domain. We found that JADE1 increases the catalytic efficiency of HBO1 acetylation of an H3-H4 substrate by about 5-fold through an N-terminal, 21-residue HBO1- and histone-binding domain and a nearby second histone core-binding domain. We also demonstrate that HBO1 contains an N-terminal histone-binding domain (HBD) that makes additional contacts with H3-H4 independent of JADE1 interactions with histones and that the HBO1 HBD does not significantly contribute to HBO1's overall HAT activity. Experiments with JADE1 deletions in vivo recapitulated these in vitro interactions and their roles in HBO1 histone acetylation activity. Together, these results indicate that the N-terminal region of JADE1 functions as a platform that brings together the catalytic HBO1 subunit with its cognate H3-H4 substrate for histone acetylation.
Collapse
Affiliation(s)
- Joseph Han
- From the Department of Biochemistry and Biophysics.,Abramson Family Cancer Research Institute, and.,Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and
| | - Catherine Lachance
- the Laval University Cancer Research Center, CHU de Québec Research Center-Oncology Axis, Quebec City, Quebec G1R 3S3, Canada
| | - M Daniel Ricketts
- From the Department of Biochemistry and Biophysics.,Abramson Family Cancer Research Institute, and.,Graduate Group in Biochemistry and Molecular Biophysics, Perelman School of Medicine, and
| | - Cheryl E McCullough
- From the Department of Biochemistry and Biophysics.,Abramson Family Cancer Research Institute, and.,Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and
| | | | - Ben E Black
- From the Department of Biochemistry and Biophysics
| | - Jacques Côté
- the Laval University Cancer Research Center, CHU de Québec Research Center-Oncology Axis, Quebec City, Quebec G1R 3S3, Canada
| | - Ronen Marmorstein
- From the Department of Biochemistry and Biophysics, .,Abramson Family Cancer Research Institute, and.,Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, and
| |
Collapse
|
275
|
Lee YJ, Schmidt MJ, Tharp JM, Weber A, Koenig AL, Zheng H, Gao J, Waters ML, Summerer D, Liu WR. Genetically encoded fluorophenylalanines enable insights into the recognition of lysine trimethylation by an epigenetic reader. Chem Commun (Camb) 2018; 52:12606-12609. [PMID: 27711380 DOI: 10.1039/c6cc05959g] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fluorophenylalanines bearing 2-5 fluorine atoms at the phenyl ring have been genetically encoded by amber codon. Replacement of F59, a phenylalanine residue that is directly involved in interactions with trimethylated K9 of histone H3, in the Mpp8 chromodomain recombinantly with fluorophenylalanines significantly impairs the binding to a K9-trimethylated H3 peptide.
Collapse
Affiliation(s)
- Yan-Jiun Lee
- Department of Chemistry, Texas A&M University, College Station, TX 7743, USA.
| | - M J Schmidt
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Jeffery M Tharp
- Department of Chemistry, Texas A&M University, College Station, TX 7743, USA.
| | - Annemarie Weber
- Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany
| | - Amber L Koenig
- Department of Chemistry, Boston College, Boston, MA 02467, USA
| | - Hong Zheng
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Jianmin Gao
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Marcey L Waters
- Department of Chemistry, Boston College, Boston, MA 02467, USA
| | - Daniel Summerer
- Department of Chemistry and Chemical Biology, Technical University of Dortmund, 44227 Dortmund, Germany.
| | - Wenshe R Liu
- Department of Chemistry, Texas A&M University, College Station, TX 7743, USA.
| |
Collapse
|
276
|
Lee J, Perez L, Liu Y, Wang H, Hooley RJ, Zhong W. Separation of Methylated Histone Peptides via Host-Assisted Capillary Electrophoresis. Anal Chem 2018; 90:1881-1888. [PMID: 29286640 DOI: 10.1021/acs.analchem.7b03969] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Lysine methylation in protein is one important epigenetic mechanism that regulates diverse biological processes but is challenging to study due to the large variability in methylation levels and sites. Here, we show that supramolecular hosts such as calixarenes and cucurbiturils can be applied in the background electrolyte (BGE) of capillary electrophoresis (CE) for highly effective separation of post-translationally methylated histone peptides. The molecular recognition event causes a shift in the electrophoretic mobility of the peptide, allowing affinity measurement for binding between the synthetic receptor and various methylated lysine species. Successful separation of the H3 peptides carrying different methylation levels at the K9 position can be achieved using CX4 and CX6 as the BGE additives in CE, enabling monitoring of the activity of the histone lysine demethylase JMJD2E. This reveals the power of combining high resolution CE with synthetic hosts for study of protein methylation, and the method should be capable of analyzing complex biological samples for better understanding of the functions of histone methylation.
Collapse
Affiliation(s)
| | | | | | - Hua Wang
- Instrument Analysis Center, Yancheng Teachers University , Yancheng, Jiangsu 224007, China
| | | | | |
Collapse
|
277
|
He J, Mansouri A, Das S. Alpha Thalassemia/Mental Retardation Syndrome X-Linked, the Alternative Lengthening of Telomere Phenotype, and Gliomagenesis: Current Understandings and Future Potential. Front Oncol 2018; 7:322. [PMID: 29359122 PMCID: PMC5766634 DOI: 10.3389/fonc.2017.00322] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 12/12/2017] [Indexed: 11/13/2022] Open
Abstract
Gliomas are the most common primary malignant brain tumor in humans. Lower grade gliomas are usually less aggressive but many cases eventually progress to a more aggressive secondary glioblastoma (GBM, WHO Grade IV), which has a universally fatal prognosis despite maximal surgical resection and concurrent chemo-radiation. With the identification of molecular markers, however, there is promise for improving diagnostic and therapeutic strategies. One of the key molecular alterations in gliomas is the alpha thalassemia/mental retardation syndrome X-linked (ATRX) gene, which is frequently mutated. One-third of pediatric GBM cases are also found to have the ATRX mutation and the genetic signatures are different from adult cases. The exact role of ATRX mutations in gliomagenesis, however, is unclear. In this review, we describe the normal cellular function of the ATRX gene product followed by consequences of its dysfunction. Furthermore, its possible association with the alternative lengthening of telomeres (ALT) phenotype is outlined. Lastly, therapeutic options potentiated through a better understanding of ATRX and the ALT phenotype are explored.
Collapse
Affiliation(s)
- Jenny He
- McGill University, Montreal, QC, Canada
| | - Alireza Mansouri
- National Institutes of Health (NIH), Bethesda, MD, United States
| | - Sunit Das
- St. Michael's Hospital, Toronto, ON, Canada.,Hospital for Sick Children, Toronto, ON, Canada
| |
Collapse
|
278
|
Grauffel C, Lim C. Factors governing when a metal-bound water is deprotonated in proteins. Phys Chem Chem Phys 2018; 20:29625-29636. [DOI: 10.1039/c8cp04776f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We evaluate the extent to which the pKw depends on the type, number, and metal-binding mode of the first-shell ligands, the metal–ligand bond distances, first-shell⋯second-shell H-bonding interactions, and the protein environment.
Collapse
Affiliation(s)
- Cédric Grauffel
- Institute of Biomedical Sciences
- Academia Sinica
- Taipei 115
- Taiwan
| | - Carmay Lim
- Institute of Biomedical Sciences
- Academia Sinica
- Taipei 115
- Taiwan
- Department of Chemistry
| |
Collapse
|
279
|
Zhao S, Zhang B, Yang M, Zhu J, Li H. Systematic Profiling of Histone Readers in Arabidopsis thaliana. Cell Rep 2018; 22:1090-1102. [DOI: 10.1016/j.celrep.2017.12.099] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 11/08/2017] [Accepted: 12/26/2017] [Indexed: 11/29/2022] Open
|
280
|
Al Temimi AHK, Belle R, Kumar K, Poater J, Betlem P, Pieters BJGE, Paton RS, Bickelhaupt FM, Mecinović J. Recognition of shorter and longer trimethyllysine analogues by epigenetic reader proteins. Chem Commun (Camb) 2018; 54:2409-2412. [DOI: 10.1039/c8cc01009a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Combined thermodynamic data, molecular dynamics simulations, and quantum chemical studies reveal that epigenetic reader proteins efficiently bind trimethylornithine and trimethylhomolysine.
Collapse
Affiliation(s)
- Abbas H. K. Al Temimi
- Institute for Molecules and Materials
- Radboud University
- Nijmegen 6525 AJ
- The Netherlands
| | - Roman Belle
- Institute for Molecules and Materials
- Radboud University
- Nijmegen 6525 AJ
- The Netherlands
| | - Kiran Kumar
- Chemistry Research Laboratory
- University of Oxford
- Oxford OX1 3TA
- UK
| | - Jordi Poater
- ICREA
- Barcelona 08010
- Spain
- Departament de Química Inorgànica i Orgànica & IQTCUB
- Universitat de Barcelona
| | - Peter Betlem
- Institute for Molecules and Materials
- Radboud University
- Nijmegen 6525 AJ
- The Netherlands
| | - Bas J. G. E. Pieters
- Institute for Molecules and Materials
- Radboud University
- Nijmegen 6525 AJ
- The Netherlands
| | - Robert S. Paton
- Chemistry Research Laboratory
- University of Oxford
- Oxford OX1 3TA
- UK
| | - F. Matthias Bickelhaupt
- Institute for Molecules and Materials
- Radboud University
- Nijmegen 6525 AJ
- The Netherlands
- Department of Theoretical Chemistry and Amsterdam Center for Multiscale Modeling (ACMM)
| | - Jasmin Mecinović
- Institute for Molecules and Materials
- Radboud University
- Nijmegen 6525 AJ
- The Netherlands
| |
Collapse
|
281
|
Füßl M, Lassowskat I, Née G, Koskela MM, Brünje A, Tilak P, Giese J, Leister D, Mulo P, Schwarzer D, Finkemeier I. Beyond Histones: New Substrate Proteins of Lysine Deacetylases in Arabidopsis Nuclei. FRONTIERS IN PLANT SCIENCE 2018; 9:461. [PMID: 29692793 PMCID: PMC5902713 DOI: 10.3389/fpls.2018.00461] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 03/23/2018] [Indexed: 05/03/2023]
Abstract
The reversible acetylation of lysine residues is catalyzed by the antagonistic action of lysine acetyltransferases and deacetylases, which can be considered as master regulators of their substrate proteins. Lysine deacetylases, historically referred to as histone deacetylases, have profound functions in regulating stress defenses and development in plants. Lysine acetylation of the N-terminal histone tails promotes gene transcription and decondensation of chromatin, rendering the DNA more accessible to the transcription machinery. In plants, the classical lysine deacetylases from the RPD3/HDA1-family have thus far mainly been studied in the context of their deacetylating activities on histones, and their versatility in molecular activities is still largely unexplored. Here we discuss the potential impact of lysine acetylation on the recently identified nuclear substrate proteins of lysine deacetylases from the Arabidopsis RPD3/HDA1-family. Among the deacetylase substrate proteins, many interesting candidates involved in nuclear protein import, transcriptional regulation, and chromatin remodeling have been identified. These candidate proteins represent key starting points for unraveling new molecular functions of the Arabidopsis lysine deacetylases. Site-directed engineering of lysine acetylation sites on these target proteins might even represent a new approach for optimizing plant growth under climate change conditions.
Collapse
Affiliation(s)
- Magdalena Füßl
- Plant Physiology, Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
- Plant Molecular Biology, Department Biology I, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Ines Lassowskat
- Plant Physiology, Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Guillaume Née
- Plant Physiology, Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Minna M. Koskela
- Molecular Plant Biology, Department of Biochemistry, University of Turku, Turku, Finland
| | - Annika Brünje
- Plant Physiology, Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Priyadarshini Tilak
- Plant Physiology, Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Jonas Giese
- Plant Physiology, Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
| | - Dario Leister
- Plant Molecular Biology, Department Biology I, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Paula Mulo
- Molecular Plant Biology, Department of Biochemistry, University of Turku, Turku, Finland
| | - Dirk Schwarzer
- Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany
| | - Iris Finkemeier
- Plant Physiology, Institute of Plant Biology and Biotechnology, University of Münster, Münster, Germany
- *Correspondence: Iris Finkemeier,
| |
Collapse
|
282
|
Bai J, Xi Q. Crosstalk between TGF-β signaling and epigenome. Acta Biochim Biophys Sin (Shanghai) 2018; 50:60-67. [PMID: 29190318 DOI: 10.1093/abbs/gmx122] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/03/2017] [Indexed: 12/20/2022] Open
Abstract
The transforming growth factor beta (TGF-β) family of ligands plays major roles in embryonic development, tissue homeostasis, adult immunity, and wound repair. Dysregulation of TGF-β signaling pathway leads to severe diseases. Its key components have been revealed over the past two decades. This family of cytokines acts by activating receptor activated SMAD (R-SMAD) transcription factors, which in turn modulate the expression of specific sets of target genes. Cells of a multicellular organism have the same genetic information, yet they show structural and functional differences owing to differential expression of their genes. Studies have demonstrated that epigenetic regulation, an integral part of the TGF-β signaling, enables cells to sense and respond to TGF-β signaling in a cell context-dependent manner. R-SMAD, as the central transcription factor of TGF-β signaling, can recruit various epigenetic regulators to shape the transcriptome. In this review, we focus on epigenetic regulatory mechanisms in the TGF-β signaling during mammalian development and diseases and discuss the central role of the interaction between R-SMAD and various epigenetic regulators in this epigenetic regulation. The crosstalk between TGF-β signaling and the epigenome could serve as a versatile fine-tuning mechanism for transcriptional regulation during embryonic development and progression of diseases, particularly cancer.
Collapse
Affiliation(s)
- Jianbo Bai
- Ministry of Education Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
- Joint Graduate Program of Peking-Tsinghua-NIBS, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Qiaoran Xi
- Ministry of Education Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China
| |
Collapse
|
283
|
Luise C, Robaa D. Application of Virtual Screening Approaches for the Identification of Small Molecule Inhibitors of the Methyllysine Reader Protein Spindlin1. Methods Mol Biol 2018; 1824:347-370. [PMID: 30039418 DOI: 10.1007/978-1-4939-8630-9_21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Computer-based approaches represent a powerful tool which helps to identify and optimize lead structures in the process of drug discovery. Computer-aided drug design techniques (CADD) encompass a large variety of methods which are subdivided into structure-based (SBDD) and ligand-based drug design (LBDD) methods. Several approaches have been successfully used over the last three decades in different fields. Indeed also in the field of epigenetics, virtual screening (VS) studies and structure-based approaches have been applied to identify novel chemical modulators of epigenetic targets as well as to predict the binding mode of active ligands and to study the protein dynamics.In this chapter, an iterative VS approach using both SBDD and LBDD methods, which was successful in identifying Spindlin1 inhibitors, will be described. All protocol steps, starting from structure-based pharmacophore modeling, protein and database preparation along with docking and similarity search, will be explained in details.
Collapse
Affiliation(s)
- Chiara Luise
- Department of Pharmaceutical Chemistry, Martin-Luther University of Halle-Wittenberg, Halle/Saale, Germany
| | - Dina Robaa
- Department of Pharmaceutical Chemistry, Martin-Luther University of Halle-Wittenberg, Halle/Saale, Germany.
| |
Collapse
|
284
|
Abstract
To get an insight into the mechanisms of gene expression regulation in eukaryotic organisms, it is necessary to decipher the connection between the different chemical modifications occurring on the chromatin, at both the DNA and the associated histone proteins. Histones are basic proteins, which pack the DNA into nucleosomes, and are hot spots for several posttranslational modifications. Elucidating combinatorial histone modifications co-occurring on the same histone protein will greatly contribute to our understanding of the mechanisms involved in the development of eukaryotes. The advancements in mass spectrometry technologies, including sensitivity, accuracy, and ionization strategies, have significantly contributed to the identification of novel single and combinatorial modifications on histones isolated from model organisms. In this chapter, we describe detailed protocols applied for the extraction, purification, and processing of histones for subsequent analysis by tandem mass spectrometry, using Brassica oleracea (cauliflower), a close relative of Arabidopsis thaliana.
Collapse
Affiliation(s)
- Walid Mahrez
- Department of Plant Biology, Linnean Center for Plant Biology, Swedish University of Agricultural Sciences, Box 7080, 75007, Uppsala, Sweden
| | - Lars Hennig
- Department of Plant Biology, Linnean Center for Plant Biology, Swedish University of Agricultural Sciences, Box 7080, 75007, Uppsala, Sweden.
| |
Collapse
|
285
|
Abstract
PURPOSE OF REVIEW Despite better knowledge of its genetic basis, pancreatic cancer is still highly lethal with very few therapeutic options. In this review, we discuss the potential impact of epigenetic therapies, focusing on lysine methylation signaling and its implication in pancreatic cancer. RECENT FINDINGS Protein lysine methylation, a key mechanism of posttranslational modifications of histone proteins, has emerged as a major cell signaling mechanism regulating physiologic and pathologic processes including cancer. This finely tuned and dynamic signaling mechanism is regulated by lysine methyltransferases (KMT), lysine demethylases (KDM) and signal transducers harboring methyl-binding domains. Recent evidence demonstrates that overexpression of cytoplasmic KMT and resulting enhanced lysine methylation is a reversible event that enhances oncogenic signaling through the Ras and Mitogen-Activated Protein Kinases pathway in pancreatic cancer, opening perspectives for new anticancer chemotherapeutics aimed at controlling these activities. SUMMARY The development of potent and specific inhibitors of lysine methylation signaling may represent a hitherto largely unexplored avenue for new forms of targeted therapy in cancer, with great potential for yet hard-to-treat cancers such as pancreatic cancer.
Collapse
|
286
|
A Role for Monomethylation of Histone H3-K27 in Gene Activity in Drosophila. Genetics 2017; 208:1023-1036. [PMID: 29242288 DOI: 10.1534/genetics.117.300585] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 12/07/2017] [Indexed: 01/09/2023] Open
Abstract
Polycomb repressive complex 2 (PRC2) is a conserved chromatin-modifying enzyme that methylates histone H3 on lysine-27 (K27). PRC2 can add one, two, or three methyl groups and the fully methylated product, H3-K27me3, is a hallmark of Polycomb-silenced chromatin. Less is known about functions of K27me1 and K27me2 and the dynamics of flux through these states. These modifications could serve mainly as intermediates to produce K27me3 or they could each convey distinct epigenetic information. To investigate this, we engineered a variant of Drosophila melanogaster PRC2 which is converted into a monomethyltransferase. A single substitution, F738Y, in the lysine-substrate binding pocket of the catalytic subunit, E(Z), creates an enzyme that retains robust K27 monomethylation but dramatically reduced di- and trimethylation. Overexpression of E(Z)-F738Y in fly cells triggers desilencing of Polycomb target genes significantly more than comparable overexpression of catalytically deficient E(Z), suggesting that H3-K27me1 contributes positively to gene activity. Consistent with this, normal genomic distribution of H3-K27me1 is enriched on actively transcribed Drosophila genes, with localization overlapping the active H3-K36me2/3 chromatin marks. Thus, distinct K27 methylation states link to either repression or activation depending upon the number of added methyl groups. If so, then H3-K27me1 deposition may involve alternative methyltransferases beyond PRC2, which is primarily repressive. Indeed, assays on fly embryos with PRC2 genetically inactivated, and on fly cells with PRC2 chemically inhibited, show that substantial H3-K27me1 accumulates independently of PRC2. These findings imply distinct roles for K27me1 vs. K27me3 in transcriptional control and an expanded machinery for methylating H3-K27.
Collapse
|
287
|
Belle R, Al Temimi AHK, Kumar K, Pieters BJGE, Tumber A, Dunford JE, Johansson C, Oppermann U, Brown T, Schofield CJ, Hopkinson RJ, Paton RS, Kawamura A, Mecinović J. Investigating d-lysine stereochemistry for epigenetic methylation, demethylation and recognition. Chem Commun (Camb) 2017; 53:13264-13267. [PMID: 29186216 PMCID: PMC6345366 DOI: 10.1039/c7cc08028j] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Histone lysine methylation is regulated by Nε-methyltransferases, demethylases, and Nε-methyl lysine binding proteins. Thermodynamic, catalytic and computational studies were carried out to investigate the interaction of three epigenetic protein classes with synthetic histone substrates containing l- and d-lysine residues. The results reveal that out of the three classes, Nε-methyl lysine binding proteins are superior in accepting lysines with the d-configuration.
Collapse
Affiliation(s)
- Roman Belle
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
288
|
Baril SA, Koenig AL, Krone MW, Albanese KI, Qixin He C, Lee GY, Houk KN, Waters ML, Brustad EM. Investigation of Trimethyllysine Binding by the HP1 Chromodomain via Unnatural Amino Acid Mutagenesis. J Am Chem Soc 2017; 139:17253-17256. [PMID: 29111699 PMCID: PMC6040664 DOI: 10.1021/jacs.7b09223] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Trimethyllysine (Kme3) reader proteins are targets for inhibition due to their role in mediating gene expression. Although all such reader proteins bind Kme3 in an aromatic cage, the driving force for binding may differ; some readers exhibit evidence for cation-π interactions whereas others do not. We report a general unnatural amino acid mutagenesis approach to quantify the contribution of individual tyrosines to cation binding using the HP1 chromodomain as a model system. We demonstrate that two tyrosines (Y24 and Y48) bind to a Kme3-histone tail peptide via cation-π interactions, but linear free energy trends suggest they do not contribute equally to binding. X-ray structures and computational analysis suggest that the distance and degree of contact between Tyr residues and Kme3 plays an important role in tuning cation-π-mediated Kme3 recognition. Although cation-π interactions have been studied in a number of proteins, this work is the first to utilize direct binding assays, X-ray crystallography, and modeling, to pinpoint factors that influence the magnitude of the individual cation-π interactions.
Collapse
Affiliation(s)
- Stefanie A. Baril
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Amber L. Koenig
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Mackenzie W. Krone
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Katherine I. Albanese
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Cyndi Qixin He
- Department of Chemistry and Biochemistry, Box 951569, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Ga Young Lee
- Department of Chemistry and Biochemistry, Box 951569, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry, Box 951569, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Marcey L. Waters
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Eric M. Brustad
- Department of Chemistry, CB 3290, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| |
Collapse
|
289
|
Klein BJ, Wang X, Cui G, Yuan C, Botuyan MV, Lin K, Lu Y, Wang X, Zhao Y, Bruns CJ, Mer G, Shi X, Kutateladze TG. PHF20 Readers Link Methylation of Histone H3K4 and p53 with H4K16 Acetylation. Cell Rep 2017; 17:1158-1170. [PMID: 27760318 DOI: 10.1016/j.celrep.2016.09.056] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 09/05/2016] [Accepted: 09/16/2016] [Indexed: 01/06/2023] Open
Abstract
PHF20 is a core component of the lysine acetyltransferase complex MOF (male absent on the first)-NSL (non-specific lethal) that generates the major epigenetic mark H4K16ac and is necessary for transcriptional regulation and DNA repair. The role of PHF20 in the complex remains elusive. Here, we report on functional coupling between methylation readers in PHF20. We show that the plant homeodomain (PHD) finger of PHF20 recognizes dimethylated lysine 4 of histone H3 (H3K4me2) and represents an example of a native reader that selects for this modification. Biochemical and structural analyses help to explain this selectivity and the preference of Tudor2, another reader in PHF20, for dimethylated p53. Binding of the PHD finger to H3K4me2 is required for histone acetylation, accumulation of PHF20 at target genes, and transcriptional activation. Together, our findings establish a unique PHF20-mediated link between MOF histone acetyltransferase (HAT), p53, and H3K4me2, and suggest a model for rapid spreading of H4K16ac-enriched open chromatin.
Collapse
Affiliation(s)
- Brianna J Klein
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Xiaoyan Wang
- Department of Epigenetics and Molecular Carcinogenesis, Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Faculty of Medicine, Ludwig Maximilian University of Munich, Munich 80336, Germany
| | - Gaofeng Cui
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Chao Yuan
- Department of Epigenetics and Molecular Carcinogenesis, Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | | | - Kevin Lin
- Department of Epigenetics and Molecular Carcinogenesis, Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yue Lu
- Department of Epigenetics and Molecular Carcinogenesis, Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xiaolu Wang
- Department of Epigenetics and Molecular Carcinogenesis, Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yue Zhao
- Department of General, Visceral and Tumor Surgery, University Clinic Cologne, Cologne 50931, Germany
| | - Christiane J Bruns
- Faculty of Medicine, Ludwig Maximilian University of Munich, Munich 80336, Germany; Department of General, Visceral and Tumor Surgery, University Clinic Cologne, Cologne 50931, Germany
| | - Georges Mer
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA.
| | - Xiaobing Shi
- Department of Epigenetics and Molecular Carcinogenesis, Center for Cancer Epigenetics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
| | - Tatiana G Kutateladze
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
| |
Collapse
|
290
|
Zeller P, Gasser SM. The Importance of Satellite Sequence Repression for Genome Stability. COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY 2017; 82:15-24. [PMID: 29133300 DOI: 10.1101/sqb.2017.82.033662] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Up to two-thirds of eukaryotic genomes consist of repetitive sequences, which include both transposable elements and tandemly arranged simple or satellite repeats. Whereas extensive progress has been made toward understanding the danger of and control over transposon expression, only recently has it been recognized that DNA damage can arise from satellite sequence transcription. Although the structural role of satellite repeats in kinetochore function and end protection has long been appreciated, it has now become clear that it is not only these functions that are compromised by elevated levels of transcription. RNA from simple repeat sequences can compromise replication fork stability and genome integrity, thus compromising germline viability. Here we summarize recent discoveries on how cells control the transcription of repeat sequence and the dangers that arise from their expression. We propose that the link between the DNA damage response and the transcriptional silencing machinery may help a cell or organism recognize foreign DNA insertions into an evolving genome.
Collapse
Affiliation(s)
- Peter Zeller
- Friedrich Miescher Institute for Biomedical Research, CH-4058 Basel, Switzerland.,Faculty of Natural Sciences, University of Basel, CH-4056 Basel, Switzerland
| | - Susan M Gasser
- Friedrich Miescher Institute for Biomedical Research, CH-4058 Basel, Switzerland.,Faculty of Natural Sciences, University of Basel, CH-4056 Basel, Switzerland
| |
Collapse
|
291
|
Bryan LC, Weilandt DR, Bachmann AL, Kilic S, Lechner CC, Odermatt PD, Fantner GE, Georgeon S, Hantschel O, Hatzimanikatis V, Fierz B. Single-molecule kinetic analysis of HP1-chromatin binding reveals a dynamic network of histone modification and DNA interactions. Nucleic Acids Res 2017; 45:10504-10517. [PMID: 28985346 PMCID: PMC5737501 DOI: 10.1093/nar/gkx697] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 07/27/2017] [Indexed: 12/20/2022] Open
Abstract
Chromatin recruitment of effector proteins involved in gene regulation depends on multivalent interaction with histone post-translational modifications (PTMs) and structural features of the chromatin fiber. Due to the complex interactions involved, it is currently not understood how effectors dynamically sample the chromatin landscape. Here, we dissect the dynamic chromatin interactions of a family of multivalent effectors, heterochromatin protein 1 (HP1) proteins, using single-molecule fluorescence imaging and computational modeling. We show that the three human HP1 isoforms are recruited and retained on chromatin by a dynamic exchange between histone PTM and DNA bound states. These interactions depend on local chromatin structure, the HP1 isoforms as well as on PTMs on HP1 itself. Of the HP1 isoforms, HP1α exhibits the longest residence times and fastest binding rates due to DNA interactions in addition to PTM binding. HP1α phosphorylation further increases chromatin retention through strengthening of multivalency while reducing DNA binding. As DNA binding in combination with specific PTM recognition is found in many chromatin effectors, we propose a general dynamic capture mechanism for effector recruitment. Multiple weak protein and DNA interactions result in a multivalent interaction network that targets effectors to a specific chromatin modification state, where their activity is required.
Collapse
Affiliation(s)
- Louise C Bryan
- Laboratory of Biophysical Chemistry of Macromolecules, Institute of Chemical Sciences and Engineering (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Daniel R Weilandt
- Laboratory of Computational Systems Biotechnology, ISIC, EPFL, 1015 Lausanne, Switzerland
| | - Andreas L Bachmann
- Laboratory of Biophysical Chemistry of Macromolecules, Institute of Chemical Sciences and Engineering (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Sinan Kilic
- Laboratory of Biophysical Chemistry of Macromolecules, Institute of Chemical Sciences and Engineering (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Carolin C Lechner
- Laboratory of Biophysical Chemistry of Macromolecules, Institute of Chemical Sciences and Engineering (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Pascal D Odermatt
- Laboratory for Bio- and Nano instrumentation, Institute of Bioengineering, EPFL, 1015 Lausanne, Switzerland
| | - Georg E Fantner
- Laboratory for Bio- and Nano instrumentation, Institute of Bioengineering, EPFL, 1015 Lausanne, Switzerland
| | - Sandrine Georgeon
- ISREC foundation chair in translational oncology, School of Life Sciences, EPFL, 1015 Lausanne, Switzerland
| | - Oliver Hantschel
- ISREC foundation chair in translational oncology, School of Life Sciences, EPFL, 1015 Lausanne, Switzerland
| | - Vassily Hatzimanikatis
- Laboratory of Computational Systems Biotechnology, ISIC, EPFL, 1015 Lausanne, Switzerland
| | - Beat Fierz
- Laboratory of Biophysical Chemistry of Macromolecules, Institute of Chemical Sciences and Engineering (ISIC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| |
Collapse
|
292
|
Kebede AF, Nieborak A, Shahidian LZ, Le Gras S, Richter F, Gómez DA, Baltissen MP, Meszaros G, Magliarelli HDF, Taudt A, Margueron R, Colomé-Tatché M, Ricci R, Daujat S, Vermeulen M, Mittler G, Schneider R. Histone propionylation is a mark of active chromatin. Nat Struct Mol Biol 2017; 24:1048-1056. [PMID: 29058708 DOI: 10.1038/nsmb.3490] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 09/22/2017] [Indexed: 12/17/2022]
Abstract
Histones are highly covalently modified, but the functions of many of these modifications remain unknown. In particular, it is unclear how histone marks are coupled to cellular metabolism and how this coupling affects chromatin architecture. We identified histone H3 Lys14 (H3K14) as a site of propionylation and butyrylation in vivo and carried out the first systematic characterization of histone propionylation. We found that H3K14pr and H3K14bu are deposited by histone acetyltransferases, are preferentially enriched at promoters of active genes and are recognized by acylation-state-specific reader proteins. In agreement with these findings, propionyl-CoA was able to stimulate transcription in an in vitro transcription system. Notably, genome-wide H3 acylation profiles were redefined following changes to the metabolic state, and deletion of the metabolic enzyme propionyl-CoA carboxylase altered global histone propionylation levels. We propose that histone propionylation, acetylation and butyrylation may act in combination to promote high transcriptional output and to couple cellular metabolism with chromatin structure and function.
Collapse
Affiliation(s)
- Adam F Kebede
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Anna Nieborak
- Institute of Functional Epigenetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Lara Zorro Shahidian
- Institute of Functional Epigenetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Stephanie Le Gras
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
| | - Florian Richter
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany.,Goethe-Universität Fachbereich Medizin, Frankfurt, Germany
| | - Diana Aguilar Gómez
- Institute of Functional Epigenetics, Helmholtz Zentrum München, Neuherberg, Germany.,Undergraduate Program in Genomic Sciences, National Autonomous University of Mexico, Mexico City, Mexico
| | - Marijke P Baltissen
- Radboud University Nijmegen, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Gergo Meszaros
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Université de Strasbourg, Strasbourg, France.,Laboratoire de Biochimie et de Biologie Moléculaire, Nouvel Hôpital Civil, Strasbourg, France
| | | | - Aaron Taudt
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany
| | | | - Maria Colomé-Tatché
- European Research Institute for the Biology of Ageing, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Institute of Computational Biology, Helmholtz Zentrum München, Neuherberg, Germany.,Technical University Munich, Freising, Germany
| | - Romeo Ricci
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Université de Strasbourg, Strasbourg, France.,Laboratoire de Biochimie et de Biologie Moléculaire, Nouvel Hôpital Civil, Strasbourg, France
| | - Sylvain Daujat
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
| | - Michiel Vermeulen
- Radboud University Nijmegen, Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Gerhard Mittler
- Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | - Robert Schneider
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France.,Institute of Functional Epigenetics, Helmholtz Zentrum München, Neuherberg, Germany.,Ludwig-Maximilains-Universität München, Faculty of Biology, Munich, Germany
| |
Collapse
|
293
|
Tekel SJ, Haynes KA. Molecular structures guide the engineering of chromatin. Nucleic Acids Res 2017; 45:7555-7570. [PMID: 28609787 PMCID: PMC5570049 DOI: 10.1093/nar/gkx531] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Accepted: 06/07/2017] [Indexed: 12/28/2022] Open
Abstract
Chromatin is a system of proteins, RNA, and DNA that interact with each other to organize and regulate genetic information within eukaryotic nuclei. Chromatin proteins carry out essential functions: packing DNA during cell division, partitioning DNA into sub-regions within the nucleus, and controlling levels of gene expression. There is a growing interest in manipulating chromatin dynamics for applications in medicine and agriculture. Progress in this area requires the identification of design rules for the chromatin system. Here, we focus on the relationship between the physical structure and function of chromatin proteins. We discuss key research that has elucidated the intrinsic properties of chromatin proteins and how this information informs design rules for synthetic systems. Recent work demonstrates that chromatin-derived peptide motifs are portable and in some cases can be customized to alter their function. Finally, we present a workflow for fusion protein design and discuss best practices for engineering chromatin to assist scientists in advancing the field of synthetic epigenetics.
Collapse
Affiliation(s)
- Stefan J Tekel
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| | - Karmella A Haynes
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, USA
| |
Collapse
|
294
|
Mauser R, Kungulovski G, Keup C, Reinhardt R, Jeltsch A. Application of dual reading domains as novel reagents in chromatin biology reveals a new H3K9me3 and H3K36me2/3 bivalent chromatin state. Epigenetics Chromatin 2017; 10:45. [PMID: 28946896 PMCID: PMC5613355 DOI: 10.1186/s13072-017-0153-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 09/18/2017] [Indexed: 12/14/2022] Open
Abstract
Background Histone post-translational modifications (PTMs) play central roles in chromatin-templated processes. Combinations of two or more histone PTMs form unique interfaces for readout and recruitment of chromatin interacting complexes, but the genome-wide mapping of coexisting histone PTMs remains an experimentally difficult task. Results We introduce here a novel type of affinity reagents consisting of two fused recombinant histone modification interacting domains (HiMIDs) for direct detection of doubly modified chromatin. To develop the method, we fused the MPP8 chromodomain and DNMT3A PWWP domain which have a binding specificity for H3K9me3 and H3K36me2/3, respectively. We validate the novel reagent biochemically and in ChIP applications and show its specific interaction with H3K9me3–H3K36me2/3 doubly modified chromatin. Modification specificity was confirmed using mutant double-HiMIDs with inactivated methyllysine binding pockets. Using this novel tool, we mapped coexisting H3K9me3–H3K36me2/3 marks in human cells by chromatin interacting domain precipitation (CIDOP). CIDOP-seq data were validated by qPCR, sequential CIDOP/ChIP and by comparison with CIDOP- and ChIP-seq data obtained with single modification readers and antibodies. The genome-wide distribution of H3K9me3–H3K36me2/3 indicates that it represents a novel bivalent chromatin state, which is enriched in weakly transcribed chromatin segments and at ZNF274 and SetDB1 binding sites. Conclusions The application of double-HiMIDs allows the single-step study of co-occurrence and distribution of combinatorial chromatin marks. Our discovery of a novel H3K9me3–H3K36me2/3 bivalent chromatin state illustrates the power of this approach, and it will stimulate numerous follow-up studies on its biological functions. Electronic supplementary material The online version of this article (doi:10.1186/s13072-017-0153-1) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Rebekka Mauser
- Department of Biochemistry, Institute of Biochemistry and Technical Biochemistry, Stuttgart University, Allmandring 31, 70569, Stuttgart, Germany
| | - Goran Kungulovski
- Department of Biochemistry, Institute of Biochemistry and Technical Biochemistry, Stuttgart University, Allmandring 31, 70569, Stuttgart, Germany
| | - Corinna Keup
- Department of Biochemistry, Institute of Biochemistry and Technical Biochemistry, Stuttgart University, Allmandring 31, 70569, Stuttgart, Germany
| | - Richard Reinhardt
- Max-Planck-Genomzentrum Köln, Carl-von-Linné-Weg 10, 50829, Cologne, Germany
| | - Albert Jeltsch
- Department of Biochemistry, Institute of Biochemistry and Technical Biochemistry, Stuttgart University, Allmandring 31, 70569, Stuttgart, Germany.
| |
Collapse
|
295
|
Moritz LE, Trievel RC. Structure, mechanism, and regulation of polycomb-repressive complex 2. J Biol Chem 2017; 293:13805-13814. [PMID: 28912274 DOI: 10.1074/jbc.r117.800367] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Polycomb repressive complex 2 (PRC2) methylates lysine 27 in histone H3, a modification associated with epigenetic gene silencing. This complex plays a fundamental role in regulating cellular differentiation and development, and PRC2 overexpression and mutations have been implicated in numerous cancers. In this Minireview, we examine recent studies elucidating the first crystal structures of the PRC2 core complex, yielding seminal insights into its catalytic mechanism, substrate specificity, allosteric regulation, and inhibition by a class of small molecules that are currently undergoing cancer clinical trials. We conclude by exploring unresolved questions and future directions for inquiry regarding PRC2 structure and function.
Collapse
Affiliation(s)
| | - Raymond C Trievel
- Department of Biological Chemistry, University of Michigan, Ann Arbor, Michigan 48109
| |
Collapse
|
296
|
Tencer AH, Gatchalian J, Klein BJ, Khan A, Zhang Y, Strahl BD, van Wely KHM, Kutateladze TG. A Unique pH-Dependent Recognition of Methylated Histone H3K4 by PPS and DIDO. Structure 2017; 25:1530-1539.e3. [PMID: 28919441 DOI: 10.1016/j.str.2017.08.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 07/26/2017] [Accepted: 08/15/2017] [Indexed: 01/07/2023]
Abstract
The protein partner of Sans-fille (PPS) and its human homolog DIDO mediate diverse chromatin activities, including the regulation of stemness genes in embryonic stem cells and splicing in Drosophila. Here, we show that the PHD fingers of PPS and DIDO recognize the histone mark H3K4me3 in a pH-dependent manner: the binding is enhanced at high pH values but is decreased at low pH. Structural analysis reveals that the pH dependency is due to the presence of a histidine residue in the K4me3-binding aromatic cage of PPS. The pH-dependent mechanism is conserved in DIDO but is lost in yeast Bye1. Acidification of cells leads to the accelerated efflux of endogenous DIDO, indicating the pH-dependent sensing of H3K4me3 in vivo. This novel mode for the recognition of H3K4me3 establishes the PHD fingers of PPS and DIDO as unique epigenetic readers and high pH sensors and suggests a role for the histidine switch during mitosis.
Collapse
Affiliation(s)
- Adam H Tencer
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Jovylyn Gatchalian
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Brianna J Klein
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Abid Khan
- Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Yi Zhang
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Brian D Strahl
- Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Karel H M van Wely
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, 28049 Madrid, Spain
| | - Tatiana G Kutateladze
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
| |
Collapse
|
297
|
Kinetic and high-throughput profiling of epigenetic interactions by 3D-carbene chip-based surface plasmon resonance imaging technology. Proc Natl Acad Sci U S A 2017; 114:E7245-E7254. [PMID: 28808021 DOI: 10.1073/pnas.1704155114] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Chemical modifications on histones and DNA/RNA constitute a fundamental mechanism for epigenetic regulation. These modifications often function as docking marks to recruit or stabilize cognate "reader" proteins. So far, a platform for quantitative and high-throughput profiling of the epigenetic interactome is urgently needed but still lacking. Here, we report a 3D-carbene chip-based surface plasmon resonance imaging (SPRi) technology for this purpose. The 3D-carbene chip is suitable for immobilizing versatile biomolecules (e.g., peptides, antibody, DNA/RNA) and features low nonspecific binding, random yet function-retaining immobilization, and robustness for reuses. We systematically profiled binding kinetics of 1,000 histone "reader-mark" pairs on a single 3D-carbene chip and validated two recognition events by calorimetric and structural studies. Notably, a discovery on H3K4me3 recognition by the DNA mismatch repair protein MSH6 in Capsella rubella suggests a mechanism of H3K4me3-mediated DNA damage repair in plant.
Collapse
|
298
|
ISWI chromatin remodellers sense nucleosome modifications to determine substrate preference. Nature 2017; 548:607-611. [PMID: 28767641 DOI: 10.1038/nature23671] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 07/25/2017] [Indexed: 12/16/2022]
Abstract
ATP-dependent chromatin remodellers regulate access to genetic information by controlling nucleosome positions in vivo. However, the mechanism by which remodellers discriminate between different nucleosome substrates is poorly understood. Many chromatin remodelling proteins possess conserved protein domains that interact with nucleosomal features. Here we used a quantitative high-throughput approach, based on the use of a DNA-barcoded mononucleosome library, to profile the biochemical activity of human ISWI family remodellers in response to a diverse set of nucleosome modifications. We show that accessory (non-ATPase) subunits of ISWI remodellers can distinguish between differentially modified nucleosomes, directing remodelling activity towards specific nucleosome substrates according to their modification state. Unexpectedly, we show that the nucleosome acidic patch is necessary for maximum activity of all ISWI remodellers evaluated. This dependence also extends to CHD and SWI/SNF family remodellers, suggesting that the acidic patch may be generally required for chromatin remodelling. Critically, remodelling activity can be regulated by modifications neighbouring the acidic patch, signifying that it may act as a tunable interaction hotspot for ATP-dependent chromatin remodellers and, by extension, many other chromatin effectors that engage this region of the nucleosome surface.
Collapse
|
299
|
Goswami S, Sanyal S, Chakraborty P, Das C, Sarkar M. Interaction of a common painkiller piroxicam and copper-piroxicam with chromatin causes structural alterations accompanied by modulation at the epigenomic/genomic level. Biochim Biophys Acta Gen Subj 2017; 1861:2048-2059. [DOI: 10.1016/j.bbagen.2017.04.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 03/27/2017] [Accepted: 04/10/2017] [Indexed: 11/25/2022]
|
300
|
Teske KA, Hadden MK. Methyllysine binding domains: Structural insight and small molecule probe development. Eur J Med Chem 2017; 136:14-35. [DOI: 10.1016/j.ejmech.2017.04.047] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 04/14/2017] [Accepted: 04/19/2017] [Indexed: 12/19/2022]
|