51
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DeRycke MS, Larson MC, Nair AA, McDonnell SK, French AJ, Tillmans LS, Riska SM, Baheti S, Fogarty ZC, Larson NB, O’Brien DR, Cheville JC, Wang L, Schaid DJ, Thibodeau SN. An expanded variant list and assembly annotation identifies multiple novel coding and noncoding genes for prostate cancer risk using a normal prostate tissue eQTL data set. PLoS One 2019; 14:e0214588. [PMID: 30958860 PMCID: PMC6453468 DOI: 10.1371/journal.pone.0214588] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 03/17/2019] [Indexed: 01/01/2023] Open
Abstract
Prostate cancer (PrCa) is highly heritable; 284 variants have been identified to date that are associated with increased prostate cancer risk, yet few genes contributing to its development are known. Expression quantitative trait loci (eQTL) studies link variants with affected genes, helping to determine how these variants might regulate gene expression and may influence prostate cancer risk. In the current study, we performed eQTL analysis on 471 normal prostate epithelium samples and 249 PrCa-risk variants in 196 risk loci, utilizing RNA sequencing transcriptome data based on ENSEMBL gene definition and genome-wide variant data. We identified a total of 213 genes associated with known PrCa-risk variants, including 141 protein-coding genes, 16 lncRNAs, and 56 other non-coding RNA species with differential expression. Compared to our previous analysis, where RefSeq was used for gene annotation, we identified an additional 130 expressed genes associated with known PrCa-risk variants. We detected an eQTL signal for more than half (n = 102, 52%) of the 196 loci tested; 52 (51%) of which were a Group 1 signal, indicating high linkage disequilibrium (LD) between the peak eQTL variant and the PrCa-risk variant (r2>0.5) and may help explain how risk variants influence the development of prostate cancer.
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Affiliation(s)
- Melissa S. DeRycke
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Melissa C. Larson
- Department of Health Sciences Research, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Asha A. Nair
- Department of Health Sciences Research, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Shannon K. McDonnell
- Department of Health Sciences Research, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Amy J. French
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Lori S. Tillmans
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Shaun M. Riska
- Department of Health Sciences Research, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Saurabh Baheti
- Department of Health Sciences Research, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Zachary C. Fogarty
- Department of Health Sciences Research, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Nicholas B. Larson
- Department of Health Sciences Research, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Daniel R. O’Brien
- Department of Health Sciences Research, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - John C. Cheville
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Liang Wang
- Department of Pathology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - Daniel J. Schaid
- Department of Health Sciences Research, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
| | - Stephen N. Thibodeau
- Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, SW, Rochester, Minnesota, United States of America
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52
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Braadland PR, Urbanucci A. Chromatin reprogramming as an adaptation mechanism in advanced prostate cancer. Endocr Relat Cancer 2019; 26:R211-R235. [PMID: 30844748 DOI: 10.1530/erc-18-0579] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 02/15/2019] [Indexed: 12/13/2022]
Abstract
Tumor evolution is based on the ability to constantly mutate and activate different pathways under the selective pressure of targeted therapies. Epigenetic alterations including those of the chromatin structure are associated with tumor initiation, progression and drug resistance. Many cancers, including prostate cancer, present enlarged nuclei, and chromatin appears altered and irregular. These phenotypic changes are likely to result from epigenetic dysregulation. High-throughput sequencing applied to bulk samples and now to single cells has made it possible to study these processes in unprecedented detail. It is therefore timely to review the impact of chromatin relaxation and increased DNA accessibility on prostate cancer growth and drug resistance, and their effects on gene expression. In particular, we focus on the contribution of chromatin-associated proteins such as the bromodomain-containing proteins to chromatin relaxation. We discuss the consequence of this for androgen receptor transcriptional activity and briefly summarize wider gain-of-function effects on other oncogenic transcription factors and implications for more effective prostate cancer treatment.
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Affiliation(s)
- Peder Rustøen Braadland
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Alfonso Urbanucci
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Institute for Cancer Genetics and Informatics, Oslo University Hospital, Oslo, Norway
- Centre for Molecular Medicine Norway, Nordic European Molecular Biology Laboratory Partnership, Forskningsparken, University of Oslo, Oslo, Norway
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53
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Giles KA, Gould CM, Du Q, Skvortsova K, Song JZ, Maddugoda MP, Achinger-Kawecka J, Stirzaker C, Clark SJ, Taberlay PC. Integrated epigenomic analysis stratifies chromatin remodellers into distinct functional groups. Epigenetics Chromatin 2019; 12:12. [PMID: 30755246 PMCID: PMC6371444 DOI: 10.1186/s13072-019-0258-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 02/05/2019] [Indexed: 12/19/2022] Open
Abstract
Background ATP-dependent chromatin remodelling complexes are responsible for establishing and maintaining the positions of nucleosomes. Chromatin remodellers are targeted to chromatin by transcription factors and non-coding RNA to remodel the chromatin into functional states. However, the influence of chromatin remodelling on shaping the functional epigenome is not well understood. Moreover, chromatin remodellers have not been extensively explored as a collective group across two-dimensional and three-dimensional epigenomic layers. Results Here, we have integrated the genome-wide binding profiles of eight chromatin remodellers together with DNA methylation, nucleosome positioning, histone modification and Hi-C chromosomal contacts to reveal that chromatin remodellers can be stratified into two functional groups. Group 1 (BRG1, SNF2H, CHD3 and CHD4) has a clear preference for binding at ‘actively marked’ chromatin and Group 2 (BRM, INO80, SNF2L and CHD1) for ‘repressively marked’ chromatin. We find that histone modifications and chromatin architectural features, but not DNA methylation, stratify the remodellers into these functional groups. Conclusions Our findings suggest that chromatin remodelling events are synchronous and that chromatin remodellers themselves should be considered simultaneously and not as individual entities in isolation or necessarily by structural similarity, as they are traditionally classified. Their coordinated function should be considered by preference for chromatin features in order to gain a more accurate and comprehensive picture of chromatin regulation. Electronic supplementary material The online version of this article (10.1186/s13072-019-0258-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Katherine A Giles
- Epigenetics Research, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia
| | - Cathryn M Gould
- Epigenetics Research, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia
| | - Qian Du
- Epigenetics Research, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia
| | - Ksenia Skvortsova
- Epigenetics Research, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia
| | - Jenny Z Song
- Epigenetics Research, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia
| | - Madhavi P Maddugoda
- Epigenetics Research, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia
| | - Joanna Achinger-Kawecka
- Epigenetics Research, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia.,St Vincent's Clinical School, UNSW Australia, Sydney, NSW, 2000, Australia
| | - Clare Stirzaker
- Epigenetics Research, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia.,St Vincent's Clinical School, UNSW Australia, Sydney, NSW, 2000, Australia
| | - Susan J Clark
- Epigenetics Research, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia.,St Vincent's Clinical School, UNSW Australia, Sydney, NSW, 2000, Australia
| | - Phillippa C Taberlay
- St Vincent's Clinical School, UNSW Australia, Sydney, NSW, 2000, Australia. .,School of Medicine, Collage of Health and Medicine, University of Tasmania, Hobart, TAS, 7000, Australia.
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54
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Skvortsova K, Masle-Farquhar E, Luu PL, Song JZ, Qu W, Zotenko E, Gould CM, Du Q, Peters TJ, Colino-Sanguino Y, Pidsley R, Nair SS, Khoury A, Smith GC, Miosge LA, Reed JH, Kench JG, Rubin MA, Horvath L, Bogdanovic O, Lim SM, Polo JM, Goodnow CC, Stirzaker C, Clark SJ. DNA Hypermethylation Encroachment at CpG Island Borders in Cancer Is Predisposed by H3K4 Monomethylation Patterns. Cancer Cell 2019; 35:297-314.e8. [PMID: 30753827 DOI: 10.1016/j.ccell.2019.01.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 11/14/2018] [Accepted: 01/07/2019] [Indexed: 01/20/2023]
Abstract
Promoter CpG islands are typically unmethylated in normal cells, but in cancer a proportion are subject to hypermethylation. Using methylome sequencing we identified CpG islands that display partial methylation encroachment across the 5' or 3' CpG island borders. CpG island methylation encroachment is widespread in prostate and breast cancer and commonly associates with gene suppression. We show that the pattern of H3K4me1 at CpG island borders in normal cells predicts the different modes of cancer CpG island hypermethylation. Notably, genetic manipulation of Kmt2d results in concordant alterations in H3K4me1 levels and CpG island border DNA methylation encroachment. Our findings suggest a role for H3K4me1 in the demarcation of CpG island methylation borders in normal cells, which become eroded in cancer.
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Affiliation(s)
- Ksenia Skvortsova
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia; Developmental Epigenomics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Etienne Masle-Farquhar
- Immunogenomics Laboratory, Immunology Division, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Phuc-Loi Luu
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Jenny Z Song
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Wenjia Qu
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Elena Zotenko
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Cathryn M Gould
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Qian Du
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Timothy J Peters
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Yolanda Colino-Sanguino
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Ruth Pidsley
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Shalima S Nair
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Amanda Khoury
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Grady C Smith
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia
| | - Lisa A Miosge
- Immunogenomics Laboratory, John Curtin School of Medical Research, Australian National University, Canberra, ACT 2601, Australia
| | - Joanne H Reed
- Immunogenomics Laboratory, Immunology Division, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - James G Kench
- Department of Tissue Pathology and Diagnostic Oncology, Royal Prince Alfred Hospital, Sydney, NSW 2010, Australia; Sydney Medical School, University of Sydney, Sydney, NSW 2010, Australia; Cancer Division, The Kinghorn Cancer Centre, Sydney, NSW 2010, Australia
| | - Mark A Rubin
- Caryl and Israel Englander Institute for Precision Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York 10021, USA; Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York 10065, USA; Sandra and Edward Meyer Cancer Center at Weill Cornell Medicine, New York 10065, USA; Department for Biomedical Research, University of Bern, Bern, CH-3012, Switzerland; Bern Center for Precision Medicine, Inselspital, Bern University Hospital, Bern, CH-3012, Switzerland
| | - Lisa Horvath
- Sydney Medical School, University of Sydney, Sydney, NSW 2010, Australia; St Vincent's Clinical School, UNSW, Sydney, NSW 2010, Australia; Department of Medical Oncology, Chris O'Brien Lifehouse, Sydney, NSW 2050, Australia; Royal Prince Alfred Hospital, Sydney, NSW 2050, Australia; Cancer Division, The Kinghorn Cancer Centre, Sydney, NSW 2010, Australia
| | - Ozren Bogdanovic
- St Vincent's Clinical School, UNSW, Sydney, NSW 2010, Australia; Developmental Epigenomics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Sue Mei Lim
- Department of Anatomy & Developmental Biology, Monash University, Melbourne, VIC 3800, Australia; Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Melbourne, VIC 3800, Australia; Australian Regenerative Medicine Institute, Monash University, Melbourne, VIC 3800, Australia
| | - Jose M Polo
- Department of Anatomy & Developmental Biology, Monash University, Melbourne, VIC 3800, Australia; Development and Stem Cells Program, Monash Biomedicine Discovery Institute, Melbourne, VIC 3800, Australia; Australian Regenerative Medicine Institute, Monash University, Melbourne, VIC 3800, Australia
| | - Christopher C Goodnow
- Immunogenomics Laboratory, Immunology Division, Garvan Institute of Medical Research, Sydney, NSW 2010, Australia; St Vincent's Clinical School, UNSW, Sydney, NSW 2010, Australia
| | - Clare Stirzaker
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia; St Vincent's Clinical School, UNSW, Sydney, NSW 2010, Australia.
| | - Susan J Clark
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Sydney, NSW 2010, Australia; St Vincent's Clinical School, UNSW, Sydney, NSW 2010, Australia.
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55
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Du Q, Bert SA, Armstrong NJ, Caldon CE, Song JZ, Nair SS, Gould CM, Luu PL, Peters T, Khoury A, Qu W, Zotenko E, Stirzaker C, Clark SJ. Replication timing and epigenome remodelling are associated with the nature of chromosomal rearrangements in cancer. Nat Commun 2019; 10:416. [PMID: 30679435 PMCID: PMC6345877 DOI: 10.1038/s41467-019-08302-1] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 12/27/2018] [Indexed: 11/08/2022] Open
Abstract
DNA replication timing is known to facilitate the establishment of the epigenome, however, the intimate connection between replication timing and changes to the genome and epigenome in cancer remain largely uncharacterised. Here, we perform Repli-Seq and integrated epigenome analyses and demonstrate that genomic regions that undergo long-range epigenetic deregulation in prostate cancer also show concordant differences in replication timing. A subset of altered replication timing domains are conserved across cancers from different tissue origins. Notably, late-replicating regions in cancer cells display a loss of DNA methylation, and a switch in heterochromatin features from H3K9me3-marked constitutive to H3K27me3-marked facultative heterochromatin. Finally, analysis of 214 prostate and 35 breast cancer genomes reveal that late-replicating regions are prone to cis and early-replication to trans chromosomal rearrangements. Together, our data suggests that the nature of chromosomal rearrangement in cancer is related to the spatial and temporal positioning and altered epigenetic states of early-replicating compared to late-replicating loci.
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Affiliation(s)
- Qian Du
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
- St. Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, 2010, NSW, Australia
| | - Saul A Bert
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
| | - Nicola J Armstrong
- Mathematics and Statistics, School of Engineering and Information Technology, Murdoch University, Perth, 6150, WA, Australia
| | - C Elizabeth Caldon
- St. Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, 2010, NSW, Australia
- Replication and Genome Stability, Cancer Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
| | - Jenny Z Song
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
| | - Shalima S Nair
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
| | - Cathryn M Gould
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
| | - Phuc-Loi Luu
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
| | - Timothy Peters
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
| | - Amanda Khoury
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
- St. Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, 2010, NSW, Australia
| | - Wenjia Qu
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
| | - Elena Zotenko
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
| | - Clare Stirzaker
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia
- St. Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, 2010, NSW, Australia
| | - Susan J Clark
- Epigenetics Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Sydney, 2010, NSW, Australia.
- St. Vincent's Clinical School, Faculty of Medicine, UNSW Sydney, Sydney, 2010, NSW, Australia.
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56
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The Role of Nucleosomes in Epigenetic Gene Regulation. Clin Epigenetics 2019. [DOI: 10.1007/978-981-13-8958-0_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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57
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Barbour JA, Wong JWH. Dysregulation of Cis-Regulatory Elements in Cancer. Clin Epigenetics 2019. [DOI: 10.1007/978-981-13-8958-0_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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58
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Gerhauser C, Favero F, Risch T, Simon R, Feuerbach L, Assenov Y, Heckmann D, Sidiropoulos N, Waszak SM, Hübschmann D, Urbanucci A, Girma EG, Kuryshev V, Klimczak LJ, Saini N, Stütz AM, Weichenhan D, Böttcher LM, Toth R, Hendriksen JD, Koop C, Lutsik P, Matzk S, Warnatz HJ, Amstislavskiy V, Feuerstein C, Raeder B, Bogatyrova O, Schmitz EM, Hube-Magg C, Kluth M, Huland H, Graefen M, Lawerenz C, Henry GH, Yamaguchi TN, Malewska A, Meiners J, Schilling D, Reisinger E, Eils R, Schlesner M, Strand DW, Bristow RG, Boutros PC, von Kalle C, Gordenin D, Sültmann H, Brors B, Sauter G, Plass C, Yaspo ML, Korbel JO, Schlomm T, Weischenfeldt J. Molecular Evolution of Early-Onset Prostate Cancer Identifies Molecular Risk Markers and Clinical Trajectories. Cancer Cell 2018; 34:996-1011.e8. [PMID: 30537516 PMCID: PMC7444093 DOI: 10.1016/j.ccell.2018.10.016] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 08/17/2018] [Accepted: 10/29/2018] [Indexed: 12/28/2022]
Abstract
Identifying the earliest somatic changes in prostate cancer can give important insights into tumor evolution and aids in stratifying high- from low-risk disease. We integrated whole genome, transcriptome and methylome analysis of early-onset prostate cancers (diagnosis ≤55 years). Characterization across 292 prostate cancer genomes revealed age-related genomic alterations and a clock-like enzymatic-driven mutational process contributing to the earliest mutations in prostate cancer patients. Our integrative analysis identified four molecular subgroups, including a particularly aggressive subgroup with recurrent duplications associated with increased expression of ESRP1, which we validate in 12,000 tissue microarray tumors. Finally, we combined the patterns of molecular co-occurrence and risk-based subgroup information to deconvolve the molecular and clinical trajectories of prostate cancer from single patient samples.
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Affiliation(s)
- Clarissa Gerhauser
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Francesco Favero
- Finsen Laboratory, Rigshospitalet, DK-2200, Copenhagen, Denmark; Biotech Research & Innovation Centre (BRIC), University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Thomas Risch
- Max Planck Institute for Molecular Genetics, Otto Warburg Laboratory Gene Regulation and Systems Biology of Cancer, Ihnestrasse 63-73, 14195 Berlin, Germany
| | - Ronald Simon
- Department of Pathology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Lars Feuerbach
- Division Applied Bioinformatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany
| | - Yassen Assenov
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Doreen Heckmann
- Division of Cancer Genome Research, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
| | - Nikos Sidiropoulos
- Finsen Laboratory, Rigshospitalet, DK-2200, Copenhagen, Denmark; Biotech Research & Innovation Centre (BRIC), University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Sebastian M Waszak
- European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 69120 Heidelberg, Germany
| | - Daniel Hübschmann
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; Department for Bioinformatics and Functional Genomics, Institute of Pharmacy and Molecular Biotechnology and Bioquant, University of Heidelberg, Heidelberg 69120, Germany; Department of Pediatric Immunology, Hematology and Oncology, University Hospital, Heidelberg 69120, Germany
| | - Alfonso Urbanucci
- Centre for Molecular Medicine Norway, Nordic European Molecular Biology Laboratory Partnership, Forskningsparken, University of Oslo, 0316 Oslo, Norway; Institute for Cancer Genetics and Informatics, Oslo University Hospital, 0316 Oslo, Norway; Department of Core Facilities, Institute for Cancer Research, Oslo University Hospital, 0316 Oslo, Norway
| | - Etsehiwot G Girma
- Finsen Laboratory, Rigshospitalet, DK-2200, Copenhagen, Denmark; Biotech Research & Innovation Centre (BRIC), University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Vladimir Kuryshev
- Division of Cancer Genome Research, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
| | - Leszek J Klimczak
- Integrative Bioinformatics Support Group, National Institute of Environmental Health Sciences, Durham, 27709 NC, USA
| | - Natalie Saini
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, 27709 NC, USA
| | - Adrian M Stütz
- European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 69120 Heidelberg, Germany
| | - Dieter Weichenhan
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Lisa-Marie Böttcher
- Department of Pathology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Reka Toth
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Josephine D Hendriksen
- Finsen Laboratory, Rigshospitalet, DK-2200, Copenhagen, Denmark; Biotech Research & Innovation Centre (BRIC), University of Copenhagen, DK-2200, Copenhagen, Denmark
| | - Christina Koop
- Department of Pathology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Pavlo Lutsik
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Sören Matzk
- Max Planck Institute for Molecular Genetics, Otto Warburg Laboratory Gene Regulation and Systems Biology of Cancer, Ihnestrasse 63-73, 14195 Berlin, Germany
| | - Hans-Jörg Warnatz
- Max Planck Institute for Molecular Genetics, Otto Warburg Laboratory Gene Regulation and Systems Biology of Cancer, Ihnestrasse 63-73, 14195 Berlin, Germany
| | - Vyacheslav Amstislavskiy
- Max Planck Institute for Molecular Genetics, Otto Warburg Laboratory Gene Regulation and Systems Biology of Cancer, Ihnestrasse 63-73, 14195 Berlin, Germany
| | - Clarissa Feuerstein
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; Faculty of Biosciences, Heidelberg University, 69120 Heidelberg, Germany
| | - Benjamin Raeder
- European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 69120 Heidelberg, Germany
| | - Olga Bogatyrova
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | | | - Claudia Hube-Magg
- Department of Pathology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Martina Kluth
- Department of Pathology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Hartwig Huland
- Martini-Clinic Prostate Cancer Center at the University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany
| | - Markus Graefen
- Martini-Clinic Prostate Cancer Center at the University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany
| | - Chris Lawerenz
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Gervaise H Henry
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390-9110, USA
| | - Takafumi N Yamaguchi
- Informatics & Biocomputing Program, Ontario Institute for Cancer Research, Toronto, Canada
| | - Alicia Malewska
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390-9110, USA
| | - Jan Meiners
- Department of Pathology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Daniela Schilling
- Division of Cancer Genome Research, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; NCT Trial Center, National Center for Tumor Diseases and German Cancer Research Center, 69120 Heidelberg, Germany
| | - Eva Reisinger
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Roland Eils
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; Department for Bioinformatics and Functional Genomics, Institute of Pharmacy and Molecular Biotechnology and Bioquant, University of Heidelberg, Heidelberg 69120, Germany
| | - Matthias Schlesner
- Division of Theoretical Bioinformatics, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; Bioinformatics and Omics Data Analytics (B240), German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Douglas W Strand
- Department of Urology, UT Southwestern Medical Center, Dallas, TX 75390-9110, USA
| | - Robert G Bristow
- Manchester Cancer Research Centre, University of Manchester, 555 Wilmslow Road, Manchester, UK
| | - Paul C Boutros
- Ontario Institute for Cancer Research, Toronto, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Christof von Kalle
- German Cancer Consortium (DKTK), 69120 Heidelberg, Germany; Division of Translational Oncology, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany
| | - Dmitry Gordenin
- Genome Integrity and Structural Biology Laboratory, National Institute of Environmental Health Sciences, Durham, 27709 NC, USA
| | - Holger Sültmann
- Division of Cancer Genome Research, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
| | - Benedikt Brors
- Division Applied Bioinformatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120 Heidelberg, Germany; National Center for Tumor Diseases (NCT), 69120 Heidelberg, Germany; German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
| | - Guido Sauter
- Department of Pathology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Christoph Plass
- Division of Epigenomics and Cancer Risk Factors, German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany; German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
| | - Marie-Laure Yaspo
- Max Planck Institute for Molecular Genetics, Otto Warburg Laboratory Gene Regulation and Systems Biology of Cancer, Ihnestrasse 63-73, 14195 Berlin, Germany
| | - Jan O Korbel
- European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 69120 Heidelberg, Germany.
| | - Thorsten Schlomm
- Martini-Clinic Prostate Cancer Center at the University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany; Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117 Berlin, Germany.
| | - Joachim Weischenfeldt
- Finsen Laboratory, Rigshospitalet, DK-2200, Copenhagen, Denmark; Biotech Research & Innovation Centre (BRIC), University of Copenhagen, DK-2200, Copenhagen, Denmark; European Molecular Biology Laboratory (EMBL), Genome Biology Unit, 69120 Heidelberg, Germany; Charité Universitätsmedizin Berlin, Charitéplatz 1, D-10117 Berlin, Germany.
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Servant N, Varoquaux N, Heard E, Barillot E, Vert JP. Effective normalization for copy number variation in Hi-C data. BMC Bioinformatics 2018; 19:313. [PMID: 30189838 PMCID: PMC6127909 DOI: 10.1186/s12859-018-2256-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 06/20/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Normalization is essential to ensure accurate analysis and proper interpretation of sequencing data, and chromosome conformation capture data such as Hi-C have particular challenges. Although several methods have been proposed, the most widely used type of normalization of Hi-C data usually casts estimation of unwanted effects as a matrix balancing problem, relying on the assumption that all genomic regions interact equally with each other. RESULTS In order to explore the effect of copy-number variations on Hi-C data normalization, we first propose a simulation model that predict the effects of large copy-number changes on a diploid Hi-C contact map. We then show that the standard approaches relying on equal visibility fail to correct for unwanted effects in the presence of copy-number variations. We thus propose a simple extension to matrix balancing methods that model these effects. Our approach can either retain the copy-number variation effects (LOIC) or remove them (CAIC). We show that this leads to better downstream analysis of the three-dimensional organization of rearranged genomes. CONCLUSIONS Taken together, our results highlight the importance of using dedicated methods for the analysis of Hi-C cancer data. Both CAIC and LOIC methods perform well on simulated and real Hi-C data sets, each fulfilling different needs.
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Affiliation(s)
- Nicolas Servant
- Institut Curie, PSL Research University, Paris, F-75005 France
- INSERM, U900, Paris, F-75005 France
- Mines ParisTech, PSL Research University, CBIO-Centre for Computational Biology, Paris, F-75006 France
| | - Nelle Varoquaux
- Department of Statistics, University of California, Berkeley, USA
- Berkeley Institute for Data Science, Berkeley, USA
| | - Edith Heard
- Institut Curie, PSL Research University, CNRS UMR3215, INSERM U934, Paris, F-75005 France
| | - Emmanuel Barillot
- Institut Curie, PSL Research University, Paris, F-75005 France
- INSERM, U900, Paris, F-75005 France
- Mines ParisTech, PSL Research University, CBIO-Centre for Computational Biology, Paris, F-75006 France
| | - Jean-Philippe Vert
- Institut Curie, PSL Research University, Paris, F-75005 France
- INSERM, U900, Paris, F-75005 France
- Mines ParisTech, PSL Research University, CBIO-Centre for Computational Biology, Paris, F-75006 France
- Ecole Normale Supérieure, PSL Research University, Department of Mathematics and Applications, Paris, F-75005 France
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60
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Suzuki M, Liao W, Wos F, Johnston AD, DeGrazia J, Ishii J, Bloom T, Zody MC, Germer S, Greally JM. Whole-genome bisulfite sequencing with improved accuracy and cost. Genome Res 2018; 28:1364-1371. [PMID: 30093547 PMCID: PMC6120621 DOI: 10.1101/gr.232587.117] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 07/14/2018] [Indexed: 12/17/2022]
Abstract
DNA methylation patterns in the genome both reflect and help to mediate transcriptional regulatory processes. The digital nature of DNA methylation, present or absent on each allele, makes this assay capable of quantifying events in subpopulations of cells, whereas genome-wide chromatin studies lack the same quantitative capacity. Testing DNA methylation throughout the genome is possible using whole-genome bisulfite sequencing (WGBS), but the high costs associated with the assay have made it impractical for studies involving more than limited numbers of samples. We have optimized a new transposase-based library preparation assay for the Illumina HiSeq X platform suitable for limited amounts of DNA and providing a major cost reduction for WGBS. By incorporating methylated cytosines during fragment end repair, we reveal an end-repair artifact affecting 1%-2% of reads that we can remove analytically. We show that the use of a high (G + C) content spike-in performs better than PhiX in terms of bisulfite sequencing quality. As expected, the loci with transposase-accessible chromatin are DNA hypomethylated and enriched in flanking regions by post-translational modifications of histones usually associated with positive effects on gene expression. Using these transposase-accessible loci to represent the cis-regulatory loci in the genome, we compared the representation of these loci between WGBS and other genome-wide DNA methylation assays, showing WGBS to outperform substantially all of the alternatives. We conclude that it is now technologically and financially feasible to perform WGBS in larger numbers of samples with greater accuracy than previously possible.
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Affiliation(s)
- Masako Suzuki
- Center for Epigenomics and Department of Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | - Will Liao
- New York Genome Center, New York, New York 10013, USA
| | - Frank Wos
- New York Genome Center, New York, New York 10013, USA
| | - Andrew D Johnston
- Center for Epigenomics and Department of Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
| | | | | | - Toby Bloom
- New York Genome Center, New York, New York 10013, USA
| | | | - Soren Germer
- New York Genome Center, New York, New York 10013, USA
| | - John M Greally
- Center for Epigenomics and Department of Genetics, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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61
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Li L, Guo F, Gao Y, Ren Y, Yuan P, Yan L, Li R, Lian Y, Li J, Hu B, Gao J, Wen L, Tang F, Qiao J. Single-cell multi-omics sequencing of human early embryos. Nat Cell Biol 2018; 20:847-858. [DOI: 10.1038/s41556-018-0123-2] [Citation(s) in RCA: 114] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 05/16/2018] [Indexed: 11/09/2022]
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Dadaev T, Saunders EJ, Newcombe PJ, Anokian E, Leongamornlert DA, Brook MN, Cieza-Borrella C, Mijuskovic M, Wakerell S, Olama AAA, Schumacher FR, Berndt SI, Benlloch S, Ahmed M, Goh C, Sheng X, Zhang Z, Muir K, Govindasami K, Lophatananon A, Stevens VL, Gapstur SM, Carter BD, Tangen CM, Goodman P, Thompson IM, Batra J, Chambers S, Moya L, Clements J, Horvath L, Tilley W, Risbridger G, Gronberg H, Aly M, Nordström T, Pharoah P, Pashayan N, Schleutker J, Tammela TLJ, Sipeky C, Auvinen A, Albanes D, Weinstein S, Wolk A, Hakansson N, West C, Dunning AM, Burnet N, Mucci L, Giovannucci E, Andriole G, Cussenot O, Cancel-Tassin G, Koutros S, Freeman LEB, Sorensen KD, Orntoft TF, Borre M, Maehle L, Grindedal EM, Neal DE, Donovan JL, Hamdy FC, Martin RM, Travis RC, Key TJ, Hamilton RJ, Fleshner NE, Finelli A, Ingles SA, Stern MC, Rosenstein B, Kerns S, Ostrer H, Lu YJ, Zhang HW, Feng N, Mao X, Guo X, Wang G, Sun Z, Giles GG, Southey MC, MacInnis RJ, FitzGerald LM, Kibel AS, Drake BF, Vega A, Gómez-Caamaño A, Fachal L, Szulkin R, Eklund M, Kogevinas M, Llorca J, Castaño-Vinyals G, Penney KL, Stampfer M, Park JY, Sellers TA, Lin HY, Stanford JL, Cybulski C, Wokolorczyk D, Lubinski J, Ostrander EA, Geybels MS, Nordestgaard BG, Nielsen SF, Weisher M, Bisbjerg R, Røder MA, Iversen P, Brenner H, Cuk K, Holleczek B, Maier C, Luedeke M, Schnoeller T, Kim J, Logothetis CJ, John EM, Teixeira MR, Paulo P, Cardoso M, Neuhausen SL, Steele L, Ding YC, De Ruyck K, De Meerleer G, Ost P, Razack A, Lim J, Teo SH, Lin DW, Newcomb LF, Lessel D, Gamulin M, Kulis T, Kaneva R, Usmani N, Slavov C, Mitev V, Parliament M, Singhal S, Claessens F, Joniau S, Van den Broeck T, Larkin S, Townsend PA, Aukim-Hastie C, Gago-Dominguez M, Castelao JE, Martinez ME, Roobol MJ, Jenster G, van Schaik RHN, Menegaux F, Truong T, Koudou YA, Xu J, Khaw KT, Cannon-Albright L, Pandha H, Michael A, Kierzek A, Thibodeau SN, McDonnell SK, Schaid DJ, Lindstrom S, Turman C, Ma J, Hunter DJ, Riboli E, Siddiq A, Canzian F, Kolonel LN, Le Marchand L, Hoover RN, Machiela MJ, Kraft P, Freedman M, Wiklund F, Chanock S, Henderson BE, Easton DF, Haiman CA, Eeles RA, Conti DV, Kote-Jarai Z. Fine-mapping of prostate cancer susceptibility loci in a large meta-analysis identifies candidate causal variants. Nat Commun 2018; 9:2256. [PMID: 29892050 PMCID: PMC5995836 DOI: 10.1038/s41467-018-04109-8] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 04/05/2018] [Indexed: 12/16/2022] Open
Abstract
Prostate cancer is a polygenic disease with a large heritable component. A number of common, low-penetrance prostate cancer risk loci have been identified through GWAS. Here we apply the Bayesian multivariate variable selection algorithm JAM to fine-map 84 prostate cancer susceptibility loci, using summary data from a large European ancestry meta-analysis. We observe evidence for multiple independent signals at 12 regions and 99 risk signals overall. Only 15 original GWAS tag SNPs remain among the catalogue of candidate variants identified; the remainder are replaced by more likely candidates. Biological annotation of our credible set of variants indicates significant enrichment within promoter and enhancer elements, and transcription factor-binding sites, including AR, ERG and FOXA1. In 40 regions at least one variant is colocalised with an eQTL in prostate cancer tissue. The refined set of candidate variants substantially increase the proportion of familial relative risk explained by these known susceptibility regions, which highlights the importance of fine-mapping studies and has implications for clinical risk profiling.
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Affiliation(s)
- Tokhir Dadaev
- The Institute of Cancer Research, London, SW7 3RP, UK
| | | | - Paul J Newcombe
- MRC Biostatistics Unit, University of Cambridge, Robinson Way, Cambridge, CB2 0SR, UK
| | | | - Daniel A Leongamornlert
- The Institute of Cancer Research, London, SW7 3RP, UK
- Cancer Genome Project, Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, UK
| | - Mark N Brook
- The Institute of Cancer Research, London, SW7 3RP, UK
| | | | | | | | - Ali Amin Al Olama
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, Strangeways Research Laboratory, University of Cambridge, Cambridge, CB1 8RN, UK
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Fredrick R Schumacher
- Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, 44106-7219, USA
- Seidman Cancer Center, University Hospitals, Cleveland, OH, 44106, USA
| | - Sonja I Berndt
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, 20892, USA
| | - Sara Benlloch
- The Institute of Cancer Research, London, SW7 3RP, UK
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, Strangeways Research Laboratory, University of Cambridge, Cambridge, CB1 8RN, UK
| | - Mahbubl Ahmed
- The Institute of Cancer Research, London, SW7 3RP, UK
| | - Chee Goh
- The Institute of Cancer Research, London, SW7 3RP, UK
| | - Xin Sheng
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, Los Angeles, CA, 90015, USA
| | - Zhuo Zhang
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, Los Angeles, CA, 90015, USA
| | - Kenneth Muir
- Institute of Population Health, University of Manchester, Manchester, M13 9PL, UK
- Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK
| | | | - Artitaya Lophatananon
- Institute of Population Health, University of Manchester, Manchester, M13 9PL, UK
- Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK
| | - Victoria L Stevens
- Epidemiology Research Program, American Cancer Society, 250 Williams Street, Atlanta, GA, 30303, USA
| | - Susan M Gapstur
- Epidemiology Research Program, American Cancer Society, 250 Williams Street, Atlanta, GA, 30303, USA
| | - Brian D Carter
- Epidemiology Research Program, American Cancer Society, 250 Williams Street, Atlanta, GA, 30303, USA
| | - Catherine M Tangen
- SWOG Statistical Center, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Phyllis Goodman
- SWOG Statistical Center, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109, USA
| | - Ian M Thompson
- CHRISTUS Santa Rosa Hospital - Medical Center, San Antonio, TX, 78229, USA
| | - Jyotsna Batra
- Australian Prostate Cancer Research Centre-Qld, Institute of Health and Biomedical Innovation and School of Biomedical Science, Queensland University of Technology, Brisbane, QLD, 4059, Australia
- Translational Research Institute, Brisbane, QLD, 4102, Australia
| | - Suzanne Chambers
- Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, 4222, Australia
- Cancer Council Queensland, Fortitude Valley, QLD, 4006, Australia
| | - Leire Moya
- Australian Prostate Cancer Research Centre-Qld, Institute of Health and Biomedical Innovation and School of Biomedical Science, Queensland University of Technology, Brisbane, QLD, 4059, Australia
- Translational Research Institute, Brisbane, QLD, 4102, Australia
| | - Judith Clements
- Australian Prostate Cancer Research Centre-Qld, Institute of Health and Biomedical Innovation and School of Biomedical Science, Queensland University of Technology, Brisbane, QLD, 4059, Australia
- Translational Research Institute, Brisbane, QLD, 4102, Australia
| | - Lisa Horvath
- Chris O'Brien Lifehouse (COBLH), Camperdown, Sydney, NSW, 2010, Australia
- Garvan Institute of Medical Research, Sydney, NSW, 2010, Australia
| | - Wayne Tilley
- Dame Roma Mitchell Cancer Research Centre, University of Adelaide, Adelaide, SA, 5005, Australia
| | - Gail Risbridger
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, 3800, Australia
- Prostate Cancer Translational Research Program, Cancer Research Division, Peter MacCallum Cancer Centre, Melbourne, VIC, 3000, Australia
| | - Henrik Gronberg
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, SE-171 77, Stockholm, Sweden
| | - Markus Aly
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, SE-171 77, Stockholm, Sweden
- Department of Molecular Medicine and Surgery, Karolinska Institutet, and Department of Urology, Karolinska University Hospital, 171 76, Stockholm, Sweden
| | - Tobias Nordström
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, SE-171 77, Stockholm, Sweden
- Department of Clinical Sciences at Danderyd Hospital, Karolinska Institutet, 182 88, Stockholm, Sweden
| | - Paul Pharoah
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, Strangeways Research Laboratory, University of Cambridge, Cambridge, CB1 8RN, UK
- Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Laboratory, University of Cambridge, Cambridge, CB1 8RN, UK
| | - Nora Pashayan
- Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Laboratory, University of Cambridge, Cambridge, CB1 8RN, UK
- Department of Applied Health Research, University College London, London, WC1E 7HB, UK
| | - Johanna Schleutker
- Institute of Biomedicine, University of Turku, FI-20014, Turku, Finland
- Tyks Microbiology and Genetics, Department of Medical Genetics, Turku University Hospital, 20521, Turku, Finland
| | - Teuvo L J Tammela
- Department of Urology, Tampere University Hospital, University of Tampere, Kalevantie 4, FI-33014, Tampere, Finland
| | - Csilla Sipeky
- Institute of Biomedicine, University of Turku, FI-20014, Turku, Finland
| | - Anssi Auvinen
- Department of Epidemiology, School of Health Sciences, University of Tampere, FI-33014, Tampere, Finland
| | - Demetrius Albanes
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, 20892, USA
| | - Stephanie Weinstein
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, 20892, USA
| | - Alicja Wolk
- Division of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Niclas Hakansson
- Division of Nutritional Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Catharine West
- Division of Cancer Sciences, Manchester Academic Health Science Centre, Radiotherapy Related Research, Manchester NIHR Biomedical Research Centre, The Christie Hospital NHS Foundation Trust, University of Manchester, Manchester, M13 9PL, UK
| | - Alison M Dunning
- Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Laboratory, University of Cambridge, Cambridge, CB1 8RN, UK
| | - Neil Burnet
- University of Cambridge Department of Oncology, Oncology Centre, Cambridge University Hospitals NHS Foundation Trust, Cambridge, CB1 8RN, UK
| | - Lorelei Mucci
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, 02115, USA
| | - Edward Giovannucci
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, 02115, USA
| | - Gerald Andriole
- Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Olivier Cussenot
- GRC N°5 ONCOTYPE-URO, UPMC Univ Paris 06, Tenon Hospital, F-75020, Paris, France
- CeRePP, Tenon Hospital, F-75020, Paris, France
| | - Géraldine Cancel-Tassin
- GRC N°5 ONCOTYPE-URO, UPMC Univ Paris 06, Tenon Hospital, F-75020, Paris, France
- CeRePP, Tenon Hospital, F-75020, Paris, France
| | - Stella Koutros
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, 20892, USA
| | - Laura E Beane Freeman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, 20892, USA
| | - Karina Dalsgaard Sorensen
- Department of Molecular Medicine, Aarhus University Hospital, 8200, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, 8200, Aarhus N, Denmark
| | - Torben Falck Orntoft
- Department of Molecular Medicine, Aarhus University Hospital, 8200, Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, 8200, Aarhus N, Denmark
| | - Michael Borre
- Department of Clinical Medicine, Aarhus University, 8200, Aarhus N, Denmark
- Department of Urology, Aarhus University Hospital, 8200, Aarhus N, Denmark
| | - Lovise Maehle
- Department of Medical Genetics, Oslo University Hospital, 0424, Oslo, Norway
| | - Eli Marie Grindedal
- Department of Medical Genetics, Oslo University Hospital, 0424, Oslo, Norway
| | - David E Neal
- Department of Oncology, Addenbrooke's Hospital, University of Cambridge, Cambridge, CB2 0QQ, UK
- Cancer Research UK Cambridge Research Institute, Li Ka Shing Centre, Cambridge, CB2 0RE, UK
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, OX1 2JD, UK
| | - Jenny L Donovan
- School of Social and Community Medicine, University of Bristol, Canynge Hall, 39 Whatley Road, Bristol, BS8 2PS, UK
| | - Freddie C Hamdy
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, OX1 2JD, UK
- Faculty of Medical Science, John Radcliffe Hospital, University of Oxford, Oxford, OX1 2JD, UK
| | - Richard M Martin
- School of Social and Community Medicine, University of Bristol, Canynge Hall, 39 Whatley Road, Bristol, BS8 2PS, UK
- Medical Research Council (MRC) Integrative Epidemiology Unit, University of Bristol, Bristol, BS8 2BN, UK
- National Institute for Health Research (NIHR) Biomedical Research Centre, University of Bristol, Bristol, BS8 1TH, UK
| | - Ruth C Travis
- Cancer Epidemiology, Nuffield Department of Population Health, University of Oxford, Oxford, OX3 7LF, UK
| | - Tim J Key
- Cancer Epidemiology, Nuffield Department of Population Health, University of Oxford, Oxford, OX3 7LF, UK
| | - Robert J Hamilton
- Department of Surgical Oncology, Princess Margaret Cancer Centre, Toronto, ON, M5G 2M9, Canada
| | - Neil E Fleshner
- Department of Surgical Oncology, Princess Margaret Cancer Centre, Toronto, ON, M5G 2M9, Canada
| | - Antonio Finelli
- Department of Surgical Oncology, Princess Margaret Cancer Centre, Toronto, ON, M5G 2M9, Canada
| | - Sue Ann Ingles
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, Los Angeles, CA, 90015, USA
| | - Mariana C Stern
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, Los Angeles, CA, 90015, USA
| | - Barry Rosenstein
- Department of Radiation Oncology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029-5674, USA
| | - Sarah Kerns
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY, 14620, USA
| | - Harry Ostrer
- Professor of Pathology and Pediatrics, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Yong-Jie Lu
- Centre for Molecular Oncology, Barts Cancer Institute, John Vane Science Centre, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Hong-Wei Zhang
- Second Military Medical University, Shanghai, 200433, P. R. China
| | - Ninghan Feng
- Wuxi Second Hospital, Nanjing Medical University, Wuxi, Jiangzhu, 214003, China
| | - Xueying Mao
- Centre for Molecular Oncology, Barts Cancer Institute, John Vane Science Centre, Queen Mary University of London, London, EC1M 6BQ, UK
| | - Xin Guo
- Department of Urology, The First Affiliated Hospital, Chongqing Medical University, Chongqing, 200032, China
- The People's Hospital of Liaoning Province and The People's Hospital of China Medical University, Shenyang, 110001, China
| | - Guomin Wang
- Department of Urology, Zhongshan Hospital, Fudan University Medical College, Shanghai, 200032, China
| | - Zan Sun
- The People's Hospital of Liaoning Province and The People's Hospital of China Medical University, Shenyang, 110001, China
| | - Graham G Giles
- Cancer Epidemiology & Intelligence Division, Cancer Council Victoria, Melbourne, VIC, 3004, Australia
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Melissa C Southey
- Precision Medicine, School and Clinical Sciences at Monash Health, Monash University, Clayton, VIC, 3168, Australia
| | - Robert J MacInnis
- Cancer Epidemiology & Intelligence Division, Cancer Council Victoria, Melbourne, VIC, 3004, Australia
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, VIC, 3010, Australia
| | - Liesel M FitzGerald
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, VIC, 3010, Australia
- Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, 7000, Australia
| | - Adam S Kibel
- Division of Urologic Surgery, Brigham and Womens Hospital, Boston, MA, 02115, USA
| | - Bettina F Drake
- Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Ana Vega
- Fundación Pública Galega de Medicina Xenómica-SERGAS, Grupo de Medicina Xenómica, CIBERER, IDIS, Santiago de Compostela, 15706, Spain
| | - Antonio Gómez-Caamaño
- Department of Radiation Oncology, Complexo Hospitalario Universitario de Santiago, SERGAS, 15706, Santiago de Compostela, Spain
| | - Laura Fachal
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, Strangeways Research Laboratory, University of Cambridge, Cambridge, CB1 8RN, UK
- Fundación Pública Galega de Medicina Xenómica-SERGAS, Grupo de Medicina Xenómica, CIBERER, IDIS, Santiago de Compostela, 15706, Spain
| | - Robert Szulkin
- Division of Family Medicine, Department of Neurobiology, Care Science and Society, Karolinska Institutet, Huddinge, SE-171 77, Stockholm, Sweden
- Scandinavian Development Services, 182 33, Danderyd, Sweden
| | - Martin Eklund
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, SE-171 77, Stockholm, Sweden
| | - Manolis Kogevinas
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona Institute for Global Health (ISGlobal), 08003, Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), 28029, Madrid, Spain
- IMIM (Hospital del Mar Research Institute), 08003, Barcelona, Spain
- Universitat Pompeu Fabra (UPF), 08002, Barcelona, Spain
| | - Javier Llorca
- CIBER Epidemiología y Salud Pública (CIBERESP), 28029, Madrid, Spain
- University of Cantabria-IDIVAL, 39005, Santander, Spain
| | - Gemma Castaño-Vinyals
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona Institute for Global Health (ISGlobal), 08003, Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), 28029, Madrid, Spain
- IMIM (Hospital del Mar Research Institute), 08003, Barcelona, Spain
- Universitat Pompeu Fabra (UPF), 08002, Barcelona, Spain
| | - Kathryn L Penney
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA, 02184, USA
| | - Meir Stampfer
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA, 02184, USA
| | - Jong Y Park
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, FL, 33612, USA
| | - Thomas A Sellers
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, FL, 33612, USA
| | - Hui-Yi Lin
- School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, 70112, USA
| | - Janet L Stanford
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109-1024, USA
- Department of Epidemiology, School of Public Health, University of Washington, Seattle, WA, 98195, USA
| | - Cezary Cybulski
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, 70-115, Szczecin, Poland
| | - Dominika Wokolorczyk
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, 70-115, Szczecin, Poland
| | - Jan Lubinski
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical University, 70-115, Szczecin, Poland
| | - Elaine A Ostrander
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Milan S Geybels
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109-1024, USA
| | - Børge G Nordestgaard
- Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, 2200, Copenhagen, Denmark
| | - Sune F Nielsen
- Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, 2200, Copenhagen, Denmark
| | - Maren Weisher
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, 2200, Copenhagen, Denmark
| | - Rasmus Bisbjerg
- Department of Urology, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, 2200, Copenhagen, Denmark
| | - Martin Andreas Røder
- Copenhagen Prostate Cancer Center, Department of Urology, Rigshospitalet, Copenhagen University Hospital, DK-2730, Herlev, Denmark
| | - Peter Iversen
- Faculty of Health and Medical Sciences, University of Copenhagen, 2200, Copenhagen, Denmark
- Copenhagen Prostate Cancer Center, Department of Urology, Rigshospitalet, Copenhagen University Hospital, DK-2730, Herlev, Denmark
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
- Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), 69120, Heidelberg, Germany
| | - Katarina Cuk
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
| | | | - Christiane Maier
- Institute for Human Genetics, University Hospital Ulm, 89075, Ulm, Germany
| | - Manuel Luedeke
- Institute for Human Genetics, University Hospital Ulm, 89075, Ulm, Germany
| | | | - Jeri Kim
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Christopher J Logothetis
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Esther M John
- Cancer Prevention Institute of California, Fremont, CA, 94538, USA
- Department of Health Research & Policy (Epidemiology) and Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA, 94305-5101, USA
| | - Manuel R Teixeira
- Department of Genetics, Portuguese Oncology Institute of Porto, 4200-072, Porto, Portugal
- Biomedical Sciences Institute (ICBAS), University of Porto, 4050-313, Porto, Portugal
| | - Paula Paulo
- Department of Genetics, Portuguese Oncology Institute of Porto, 4200-072, Porto, Portugal
| | - Marta Cardoso
- Department of Genetics, Portuguese Oncology Institute of Porto, 4200-072, Porto, Portugal
| | - Susan L Neuhausen
- Department of Population Sciences, Beckman Research Institute of the City of Hope, Duarte, CA, 91010, USA
| | - Linda Steele
- Department of Population Sciences, Beckman Research Institute of the City of Hope, Duarte, CA, 91010, USA
| | - Yuan Chun Ding
- Department of Population Sciences, Beckman Research Institute of the City of Hope, Duarte, CA, 91010, USA
| | - Kim De Ruyck
- Ghent University, Faculty of Medicine and Health Sciences, Basic Medical Sciences, B-9000, Gent, Belgium
| | - Gert De Meerleer
- Ghent University, Faculty of Medicine and Health Sciences, Basic Medical Sciences, B-9000, Gent, Belgium
| | - Piet Ost
- Department of Radiotherapy, Ghent University Hospital, B-9000, Gent, Belgium
| | - Azad Razack
- Department of Surgery, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Jasmine Lim
- Department of Surgery, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Soo-Hwang Teo
- Cancer Research Malaysia (CRM), Outpatient Centre, Subang Jaya Medical Centre, 47500, Subang Jaya, Selangor, Malaysia
| | - Daniel W Lin
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109-1024, USA
- Department of Urology, University of Washington, Seattle, WA, 98195, USA
| | - Lisa F Newcomb
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, 98109-1024, USA
- Department of Urology, University of Washington, Seattle, WA, 98195, USA
| | - Davor Lessel
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, D-20246, Hamburg, Germany
| | - Marija Gamulin
- Division of Medical Oncology, Urogenital Unit, Department of Oncology at the University Hospital Centre Zagreb, Šalata 2, 10000, Zagreb, Croatia
| | - Tomislav Kulis
- Department of Urology, University Hospital Center Zagreb, University of Zagreb School of Medicine, Šalata 2, 10000, Zagreb, Croatia
| | - Radka Kaneva
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical University of Sofia, 1431, Sofia, Bulgaria
| | - Nawaid Usmani
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB, T6G 1Z2, Canada
- Division of Radiation Oncology, Cross Cancer Institute, Edmonton, AB, T6G 1Z2, Canada
| | - Chavdar Slavov
- Department of Urology and Alexandrovska University Hospital, Medical University of Sofia, 1431, Sofia, Bulgaria
| | - Vanio Mitev
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical University of Sofia, 1431, Sofia, Bulgaria
| | - Matthew Parliament
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB, T6G 1Z2, Canada
- Division of Radiation Oncology, Cross Cancer Institute, Edmonton, AB, T6G 1Z2, Canada
| | - Sandeep Singhal
- Department of Oncology, Cross Cancer Institute, University of Alberta, Edmonton, AB, T6G 1Z2, Canada
| | - Frank Claessens
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, BE-3000, Leuven, Belgium
| | - Steven Joniau
- Department of Urology, University Hospitals Leuven, BE-3000, Leuven, Belgium
| | - Thomas Van den Broeck
- Molecular Endocrinology Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, BE-3000, Leuven, Belgium
- Department of Urology, University Hospitals Leuven, BE-3000, Leuven, Belgium
| | - Samantha Larkin
- Southampton General Hospital, The University of Southampton, Southampton, SO16 6YD, UK
| | - Paul A Townsend
- Manchester Cancer Research Centre, Faculty of Biology Medicine & Health, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Centre, Health Innovation Manchester, University of Manchester, Manchester, M13 9WL, UK
| | | | - Manuela Gago-Dominguez
- Genomic Medicine Group, Galician Foundation of Genomic Medicine, Instituto de Investigacion Sanitaria de Santiago de Compostela (IDIS), Complejo Hospitalario Universitario de Santiago, Servicio Galego de Saúde, SERGAS, 15706, Santiago de Compostela, Spain
- Moores Cancer Center, University of California San Diego, La Jolla, CA, 92037, USA
| | - Jose Esteban Castelao
- Genetic Oncology Unit, CHUVI Hospital, Complexo Hospitalario Universitario de Vigo, Instituto de Investigación Biomédica Galicia Sur (IISGS), 36204, Vigo (Pontevedra), Spain
| | - Maria Elena Martinez
- Moores Cancer Center, Department of Family Medicine and Public Health, University of California San Diego, La Jolla, CA, 92093-0012, USA
| | - Monique J Roobol
- Department of Urology, Erasmus University Medical Center, 3015 CE, Rotterdam, The Netherlands
| | - Guido Jenster
- Department of Urology, Erasmus University Medical Center, 3015 CE, Rotterdam, The Netherlands
| | - Ron H N van Schaik
- Department of Clinical Chemistry, Erasmus University Medical Center, 3015 CE, Rotterdam, The Netherlands
| | - Florence Menegaux
- Cancer & Environment Group, Center for Research in Epidemiology and Population Health (CESP), INSERM, University Paris-Sud, University Paris-Saclay, 94807, Villejuif Cédex, France
| | - Thérèse Truong
- Cancer & Environment Group, Center for Research in Epidemiology and Population Health (CESP), INSERM, University Paris-Sud, University Paris-Saclay, 94807, Villejuif Cédex, France
| | - Yves Akoli Koudou
- Cancer & Environment Group, Center for Research in Epidemiology and Population Health (CESP), INSERM, University Paris-Sud, University Paris-Saclay, 94807, Villejuif Cédex, France
| | - Jianfeng Xu
- Program for Personalized Cancer Care, NorthShore University HealthSystem, Evanston, IL, 60201, USA
| | - Kay-Tee Khaw
- Clinical Gerontology Unit, University of Cambridge, Cambridge, CB2 2QQ, UK
| | - Lisa Cannon-Albright
- Division of Genetic Epidemiology, Department of Medicine, University of Utah School of Medicine, Salt Lake City, UT, 84112, USA
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, UT, 84148, USA
| | - Hardev Pandha
- The University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | | | | | - Stephen N Thibodeau
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, 55905, USA
| | - Shannon K McDonnell
- Division of Biomedical Statistics & Informatics, Mayo Clinic, Rochester, MN, 55905, USA
| | - Daniel J Schaid
- Division of Biomedical Statistics & Informatics, Mayo Clinic, Rochester, MN, 55905, USA
| | - Sara Lindstrom
- Department of Epidemiology, University of Washington, Seattle, WA, 98195, USA
| | - Constance Turman
- Program in Genetic Epidemiology and Statistical Genetics, Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Jing Ma
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital/Harvard Medical School, Boston, MA, 02184, USA
| | - David J Hunter
- Program in Genetic Epidemiology and Statistical Genetics, Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Elio Riboli
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, London, SW7 2AZ, UK
| | - Afshan Siddiq
- Genomics England, Queen Mary University of London, Dawson Hall, Charterhouse Square, London, EC1M 6BQ, UK
| | - Federico Canzian
- Genomic Epidemiology Group, German Cancer Research Center (DKFZ), D-69120, Heidelberg, Germany
| | - Laurence N Kolonel
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI, 96813, USA
| | - Loic Le Marchand
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI, 96813, USA
| | - Robert N Hoover
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, 20892, USA
| | - Mitchell J Machiela
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, 20892, USA
| | - Peter Kraft
- Program in Genetic Epidemiology and Statistical Genetics, Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | | | - Fredrik Wiklund
- Department of Medical Epidemiology and Biostatistics, Karolinska Institute, SE-171 77, Stockholm, Sweden
| | - Stephen Chanock
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, 20892, USA
| | - Brian E Henderson
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, Los Angeles, CA, 90015, USA
| | - Douglas F Easton
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, Strangeways Research Laboratory, University of Cambridge, Cambridge, CB1 8RN, UK
- Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Laboratory, University of Cambridge, Cambridge, CB1 8RN, UK
| | - Christopher A Haiman
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, Los Angeles, CA, 90015, USA
| | - Rosalind A Eeles
- The Institute of Cancer Research, London, SW7 3RP, UK
- Royal Marsden NHS Foundation Trust, London, SW3 6JJ, UK
| | - David V Conti
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California/Norris Comprehensive Cancer Center, Los Angeles, CA, 90015, USA
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Benetatos L, Vartholomatos G. Enhancer DNA methylation in acute myeloid leukemia and myelodysplastic syndromes. Cell Mol Life Sci 2018; 75:1999-2009. [PMID: 29484447 PMCID: PMC11105366 DOI: 10.1007/s00018-018-2783-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 02/19/2018] [Accepted: 02/20/2018] [Indexed: 12/13/2022]
Abstract
DNA methylation (CpG methylation) exerts an important role in normal differentiation and proliferation of hematopoietic stem cells and their differentiated progeny, while it has also the ability to regulate myeloid versus lymphoid fate. Mutations of the epigenetic machinery are observed in hematological malignancies including acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS) resulting in hyper- or hypo-methylation affecting several different pathways. Enhancers are cis-regulatory elements which promote transcription activation and are characterized by histone marks including H3K27ac and H3K4me1/2. These gene subunits are target gene expression 'fine-tuners', are differentially used during the hematopoietic differentiation, and, in contrast to promoters, are not shared by the different hematopoietic cell types. Although the interaction between gene promoters and DNA methylation has extensively been studied, much less is known about the interplay between enhancers and DNA methylation. In hematopoiesis, DNA methylation at enhancers has the potential to discriminate between fetal and adult erythropoiesis, and also is a regulatory mechanism in granulopoiesis through repression of neutrophil-specific enhancers in progenitor cells during maturation. The interplay between DNA methylation at enhancers is disrupted in AML and MDS and mainly hyper-methylation at enhancers raising early during myeloid lineage commitment is acquired during malignant transformation. Interactions between mutated epigenetic drivers and other oncogenic mutations also affect enhancers' activity with final result, myeloid differentiation block. In this review, we have assembled recent data regarding DNA methylation and enhancers' activity in normal and mainly myeloid malignancies.
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Galactic Cosmic Radiation Induces Persistent Epigenome Alterations Relevant to Human Lung Cancer. Sci Rep 2018; 8:6709. [PMID: 29712937 PMCID: PMC5928241 DOI: 10.1038/s41598-018-24755-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Accepted: 03/27/2018] [Indexed: 12/14/2022] Open
Abstract
Human deep space and planetary travel is limited by uncertainties regarding the health risks associated with exposure to galactic cosmic radiation (GCR), and in particular the high linear energy transfer (LET), heavy ion component. Here we assessed the impact of two high-LET ions 56Fe and 28Si, and low-LET X rays on genome-wide methylation patterns in human bronchial epithelial cells. We found that all three radiation types induced rapid and stable changes in DNA methylation but at distinct subsets of CpG sites affecting different chromatin compartments. The 56Fe ions induced mostly hypermethylation, and primarily affected sites in open chromatin regions including enhancers, promoters and the edges ("shores") of CpG islands. The 28Si ion-exposure had mixed effects, inducing both hyper and hypomethylation and affecting sites in more repressed heterochromatic environments, whereas X rays induced mostly hypomethylation, primarily at sites in gene bodies and intergenic regions. Significantly, the methylation status of 56Fe ion sensitive sites, but not those affected by X ray or 28Si ions, discriminated tumor from normal tissue for human lung adenocarcinomas and squamous cell carcinomas. Thus, high-LET radiation exposure leaves a lasting imprint on the epigenome, and affects sites relevant to human lung cancer. These methylation signatures may prove useful in monitoring the cumulative biological impact and associated cancer risks encountered by astronauts in deep space.
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Rhie SK, Yao L, Luo Z, Witt H, Schreiner S, Guo Y, Perez AA, Farnham PJ. ZFX acts as a transcriptional activator in multiple types of human tumors by binding downstream from transcription start sites at the majority of CpG island promoters. Genome Res 2018; 28:310-320. [PMID: 29429977 PMCID: PMC5848610 DOI: 10.1101/gr.228809.117] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 01/26/2018] [Indexed: 12/29/2022]
Abstract
High expression of the transcription factor ZFX is correlated with proliferation, tumorigenesis, and patient survival in multiple types of human cancers. However, the mechanism by which ZFX influences transcriptional regulation has not been determined. We performed ChIP-seq in four cancer cell lines (representing kidney, colon, prostate, and breast cancers) to identify ZFX binding sites throughout the human genome. We identified roughly 9000 ZFX binding sites and found that most of the sites are in CpG island promoters. Moreover, genes with promoters bound by ZFX are expressed at higher levels than genes with promoters not bound by ZFX. To determine if ZFX contributes to regulation of the promoters to which it is bound, we performed RNA-seq analysis after knockdown of ZFX by siRNA in prostate and breast cancer cells. Many genes with promoters bound by ZFX were down-regulated upon ZFX knockdown, supporting the hypothesis that ZFX acts as a transcriptional activator. Surprisingly, ZFX binds at +240 bp downstream from the TSS of the responsive promoters. Using Nucleosome Occupancy and Methylome Sequencing (NOMe-seq), we show that ZFX binds between the open chromatin region at the TSS and the first downstream nucleosome, suggesting that ZFX may play a critical role in promoter architecture. We have also shown that a closely related zinc finger protein ZNF711 has a similar binding pattern at CpG island promoters, but ZNF711 may play a subordinate role to ZFX. This functional characterization of ZFX provides important new insights into transcription, chromatin structure, and the regulation of the cancer transcriptome.
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Affiliation(s)
- Suhn Kyong Rhie
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90089, USA
| | - Lijun Yao
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90089, USA
| | - Zhifei Luo
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90089, USA
| | - Heather Witt
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90089, USA
| | - Shannon Schreiner
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90089, USA
| | - Yu Guo
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90089, USA
| | - Andrew A Perez
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90089, USA
| | - Peggy J Farnham
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California 90089, USA
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Tirado-Magallanes R, Rebbani K, Lim R, Pradhan S, Benoukraf T. Whole genome DNA methylation: beyond genes silencing. Oncotarget 2018; 8:5629-5637. [PMID: 27895318 PMCID: PMC5354935 DOI: 10.18632/oncotarget.13562] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 11/07/2016] [Indexed: 11/25/2022] Open
Abstract
The combination of DNA bisulfite treatment with high-throughput sequencing technologies has enabled investigation of genome-wide DNA methylation at near base pair level resolution, far beyond that of the kilobase-long canonical CpG islands that initially revealed the biological relevance of this covalent DNA modification. The latest high-resolution studies have revealed a role for very punctual DNA methylation in chromatin plasticity, gene regulation and splicing. Here, we aim to outline the major biological consequences of DNA methylation recently discovered. We also discuss the necessity of tuning DNA methylation resolution into an adequate scale to ease the integration of the methylome information with other chromatin features and transcription events such as gene expression, nucleosome positioning, transcription factors binding dynamic, gene splicing and genomic imprinting. Finally, our review sheds light on DNA methylation heterogeneity in cell population and the different approaches used for its assessment, including the contribution of single cell DNA analysis technology.
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Affiliation(s)
- Roberto Tirado-Magallanes
- Cancer Science Institute of Singapore, National University of Singapore, 117599 Singapore, Singapore.,Computational Systems Biology Team, Institut de Biologie de l'Ecole Normale Supérieure (IBENS), INSERM, Ecole Normale Supérieure, PSL Research University, 75005 Paris, France
| | - Khadija Rebbani
- Cancer Science Institute of Singapore, National University of Singapore, 117599 Singapore, Singapore
| | - Ricky Lim
- Cancer Science Institute of Singapore, National University of Singapore, 117599 Singapore, Singapore
| | | | - Touati Benoukraf
- Cancer Science Institute of Singapore, National University of Singapore, 117599 Singapore, Singapore
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Lövkvist C, Sneppen K, Haerter JO. Exploring the Link between Nucleosome Occupancy and DNA Methylation. Front Genet 2018; 8:232. [PMID: 29379519 PMCID: PMC5771128 DOI: 10.3389/fgene.2017.00232] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 12/22/2017] [Indexed: 12/21/2022] Open
Abstract
Near promoters, both nucleosomes and CpG sites form characteristic spatial patterns. Previously, nucleosome depleted regions were observed upstream of transcription start sites and nucleosome occupancy was reported to correlate both with CpG density and the level of CpG methylation. Several studies imply a causal link where CpG methylation might induce nucleosome formation, whereas others argue the opposite, i.e., that nucleosome occupancy might influence CpG methylation. Correlations are indeed evident between nucleosomes, CpG density and CpG methylation—at least near promoter sites. It is however less established whether there is an immediate causal relation between nucleosome occupancy and the presence of CpG sites—or if nucleosome occupancy could be influenced by other factors. In this work, we test for such causality in human genomes by analyzing the three quantities both near and away from promoter sites. For data from the human genome we compare promoter regions with given CpG densities with genomic regions without promoters but of similar CpG densities. We find the observed correlation between nucleosome occupancy and CpG density, respectively CpG methylation, to be specific to promoter regions. In other regions along the genome nucleosome occupancy is statistically independent of the positioning of CpGs or their methylation levels. Anti-correlation between CpG density and methylation level is however similarly strong in both regions. On promoters, nucleosome occupancy is more strongly affected by the level of gene expression than CpG density or CpG methylation—calling into question any direct causal relation between nucleosome occupancy and CpG organization. Rather, our results suggest that for organisms with cytosine methylation nucleosome occupancy might be primarily linked to gene expression, with no strong impact on methylation.
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Affiliation(s)
- Cecilia Lövkvist
- Center for Models of Life, Niels Bohr Institue, University of Copenhagen, Copenhagen, Denmark
| | - Kim Sneppen
- Center for Models of Life, Niels Bohr Institue, University of Copenhagen, Copenhagen, Denmark
| | - Jan O Haerter
- Center for Models of Life, Niels Bohr Institue, University of Copenhagen, Copenhagen, Denmark
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LSD1 activation promotes inducible EMT programs and modulates the tumour microenvironment in breast cancer. Sci Rep 2018; 8:73. [PMID: 29311580 PMCID: PMC5758711 DOI: 10.1038/s41598-017-17913-x] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 12/04/2017] [Indexed: 12/23/2022] Open
Abstract
Complex regulatory networks control epithelial-to-mesenchymal transition (EMT) but the underlying epigenetic control is poorly understood. Lysine-specific demethylase 1 (LSD1) is a key histone demethylase that alters the epigenetic landscape. Here we explored the role of LSD1 in global epigenetic regulation of EMT, cancer stem cells (CSCs), the tumour microenvironment, and therapeutic resistance in breast cancer. LSD1 induced pan-genomic gene expression in networks implicated in EMT and selectively elicits gene expression programs in CSCs whilst repressing non-CSC programs. LSD1 phosphorylation at serine-111 (LSD1-s111p) by chromatin anchored protein kinase C-theta (PKC-θ), is critical for its demethylase and EMT promoting activity and LSD1-s111p is enriched in chemoresistant cells in vivo. LSD1 couples to PKC-θ on the mesenchymal gene epigenetic template promotes LSD1-mediated gene induction. In vivo, chemotherapy reduced tumour volume, and when combined with an LSD1 inhibitor, abrogated the mesenchymal signature and promoted an innate, M1 macrophage-like tumouricidal immune response. Circulating tumour cells (CTCs) from metastatic breast cancer (MBC) patients were enriched with LSD1 and pharmacological blockade of LSD1 suppressed the mesenchymal and stem-like signature in these patient-derived CTCs. Overall, LSD1 inhibition may serve as a promising epigenetic adjuvant therapy to subvert its pleiotropic roles in breast cancer progression and treatment resistance.
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Rhie SK, Schreiner S, Farnham PJ. Defining Regulatory Elements in the Human Genome Using Nucleosome Occupancy and Methylome Sequencing (NOMe-Seq). Methods Mol Biol 2018; 1766:209-229. [PMID: 29605855 DOI: 10.1007/978-1-4939-7768-0_12] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
NOMe-seq (nucleosome occupancy and methylome sequencing) identifies nucleosome-depleted regions that correspond to promoters, enhancers, and insulators. The NOMe-seq method is based on the treatment of chromatin with the M.CviPI methyltransferase, which methylates GpC dinucleotides that are not protected by nucleosomes or other proteins that are tightly bound to the chromatin (GpCm does not occur in the human genome and therefore there is no endogenous background of GpCm). Following bisulfite treatment of the M.CviPI-methylated chromatin (which converts unmethylated Cs to Ts and thus allows the distinction of GpC from GpCm) and subsequent genomic sequencing, nucleosome-depleted regions can be ascertained on a genome-wide scale. The bisulfite treatment also allows the distinction of CpG from CmpG (most endogenous methylation occurs at CpG dinucleotides) and thus the endogenous methylation status of the genome can also be obtained in the same sequencing reaction. Importantly, open chromatin is expected to have high levels of GpCm but low levels of CmpG; thus, each of the two separate methylation analyses serve as independent (but opposite) measures which provide matching chromatin designations for each regulatory element.NOMe-seq has advantages over ChIP-seq for identification of regulatory elements because it is not reliant upon knowing the exact modifications on the surrounding nucleosomes. Also, NOMe-seq has advantages over DHS (DNase hypersensitive site)-seq, FAIRE (Formaldehyde-Assisted Isolation of Regulatory Elements)-seq, and ATAC (Assay for Transposase-Accessible Chromatin)-seq because it also gives positioning information for several nucleosomes on either side of each open regulatory element. Here, we provide a detailed protocol for NOMe-seq that begins with the isolation of chromatin, followed by methylation of GpCs with M.CviPI and treatment with bisulfite, and ending with the creation of next generation sequencing libraries. We also include sequencing QC analysis metrics and bioinformatics steps that can be used to identify nucleosome-depleted regions throughout the genome.
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Affiliation(s)
- Suhn Kyong Rhie
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Shannon Schreiner
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Peggy J Farnham
- Department of Biochemistry and Molecular Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
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Abstract
DNA methylation is a dynamic epigenetic mark that characterizes different cellular developmental stages, including tissue-specific profiles. This CpG dinucleotide modification cooperates in the regulation of the output of the cellular genetic content, in both healthy and pathological conditions. According to endogenous and exogenous stimuli, DNA methylation is involved in gene transcription, alternative splicing, imprinting, X-chromosome inactivation, and control of transposable elements. When these dinucleotides are organized in dense regions are called CpG islands (CGIs), being commonly known as transcriptional regulatory regions frequently associated with the promoter region of several genes. In cancer, promoter DNA hypermethylation events sustained the mechanistic hypothesis of epigenetic transcriptional silencing of an increasing number of tumor suppressor genes. CGI hypomethylation-mediated reactivation of oncogenes was also documented in several cancer types. In this chapter, we aim to summarize the functional consequences of the differential DNA methylation at CpG dinucleotides in cancer, focused in CGIs. Interestingly, cancer methylome is being recently explored, looking for biomarkers for diagnosis, prognosis, and predictors of drug response.
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Affiliation(s)
- Humberto J Ferreira
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Catalonia, Spain
| | - Manel Esteller
- Cancer Epigenetics and Biology Program (PEBC), Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Catalonia, Spain.
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia, Spain.
- Department of Physiological Sciences II, School of Medicine, University of Barcelona, Barcelona, Catalonia, Spain.
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71
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Shu XS, Zhao Y, Sun Y, Zhong L, Cheng Y, Zhang Y, Ning K, Tao Q, Wang Y, Ying Y. The epigenetic modifier PBRM1 restricts the basal activity of the innate immune system by repressing retinoic acid-inducible gene-I-like receptor signalling and is a potential prognostic biomarker for colon cancer. J Pathol 2018; 244:36-48. [PMID: 28940253 DOI: 10.1002/path.4986] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 08/02/2017] [Accepted: 09/11/2017] [Indexed: 12/25/2022]
Abstract
It has long been known that patients suffering from inflammatory bowel disease (IBD) have an increased risk of developing colorectal cancer (CRC). The innate immune system of host cells provides a first-line defence against pathogenic infection, whereas an uncontrolled inflammatory response under homeostatic conditions usually leads to pathological consequences, as exemplified by the chronic inflammation of IBD. The key molecules and pathways keeping innate immunity in check are still poorly defined. Here, we report that the chromatin remodeller polybromo-1 (PBRM1) is a repressor of innate immune signalling mediated by retinoic acid-inducible gene-I (RIG-I)-like receptors (RLRs). Knockdown of PBRM1 in colon cancer cells increased the expression of two receptor genes (RIG-I and MDA5) and upregulated interferon (IFN)-related and inflammation-related gene signatures. The innate immune signal stimulated by a double-stranded RNA viral mimic was exaggerated by PBRM1 suppression. PBRM1 cooperated with polycomb protein EZH2 to directly bind the cis-regulatory elements of RIG-I and MDA5, thereby suppressing their transcription. Moreover, upregulation of RIG-I and MDA5 is required for IFN response activation induced by PBRM1 silencing. TRIM25, a protein stimulated by the RLR pathway and IFN production, physically interacted with PBRM1 and induced PBRM1 protein destabilization by promoting its ubiquitination. These findings reveal a PBRM1-RLR regulatory circuit that can keep innate immune activity at a minimal level in resting cells, and also ensure a robust inflammatory response in the case of pathogen invasion. PBRM1 was found to be downregulated in primary tissues from patients with CRC or IBD, and its expression correlated negatively with that of RLR genes and interferon-stimulated genes in CRC samples. Lower PBRM1 expression was associated with advanced pathological grade and poorer survival of CRC patients, indicating that PBRM1 could serve as a potential prognostic biomarker for CRC. Copyright © 2017 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Xing-Sheng Shu
- School of Medicine, Health Science Centre, Shenzhen University, Shenzhen, PR China
- Institute of Molecular Medicine, Shenzhen University, Shenzhen, PR China
| | - Yingying Zhao
- School of Medicine, Health Science Centre, Shenzhen University, Shenzhen, PR China
| | - Yanmei Sun
- School of Medicine, Health Science Centre, Shenzhen University, Shenzhen, PR China
| | - Lan Zhong
- Department of Gynaecology and Obstetrics, West China Second Hospital, Sichuan University, Chengdu, PR China
| | - Yingduan Cheng
- Department of Urology, The Second Affiliated Hospital of Jinan University, Shenzhen People's Hospital, Shenzhen, PR China
| | - Yixiang Zhang
- Department of Urology, The Second Affiliated Hospital of Jinan University, Shenzhen People's Hospital, Shenzhen, PR China
| | - Kaile Ning
- School of Medicine, Health Science Centre, Shenzhen University, Shenzhen, PR China
| | - Qian Tao
- Cancer Epigenetics Laboratory, Department of Clinical Oncology, Sir YK Pao Centre for Cancer, The Chinese University of Hong Kong, Hong Kong, PR China
| | - Yejun Wang
- School of Medicine, Health Science Centre, Shenzhen University, Shenzhen, PR China
| | - Ying Ying
- School of Medicine, Health Science Centre, Shenzhen University, Shenzhen, PR China
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72
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Leadem BR, Kagiampakis I, Wilson C, Cheung TK, Arnott D, Trojer P, Classon M, Easwaran H, Baylin SB. A KDM5 Inhibitor Increases Global H3K4 Trimethylation Occupancy and Enhances the Biological Efficacy of 5-Aza-2'-Deoxycytidine. Cancer Res 2017; 78:1127-1139. [PMID: 29282222 DOI: 10.1158/0008-5472.can-17-1453] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 11/06/2017] [Accepted: 12/19/2017] [Indexed: 11/16/2022]
Abstract
The H3K4 demethylase KDM5B is amplified and overexpressed in luminal breast cancer, suggesting it might constitute a potential cancer therapy target. Here, we characterize, in breast cancer cells, the molecular effects of a recently developed small-molecule inhibitor of the KDM5 family of proteins (KDM5i), either alone or in combination with the DNA-demethylating agent 5-aza-2'-deoxycytidine (DAC). KDM5i treatment alone increased expression of a small number of genes, whereas combined treatment with DAC enhanced the effects of the latter for increasing expression of hundreds of DAC-responsive genes. ChIP-seq studies revealed that KDM5i resulted in the broadening of existing H3K4me3 peaks. Furthermore, cells treated with the drug combination exhibited increased promoter and gene body H3K4me3 occupancy at DAC-responsive genes compared with DAC alone. Importantly, treatment with either DAC or DAC+KDM5i induced a dramatic increase in H3K27ac at enhancers with an associated significant increase in target gene expression, suggesting a previously unappreciated effect of DAC on transcriptional regulation. KDM5i synergized with DAC to reduce the viability of luminal breast cancer cells in in vitro assays. Our study provides the first look into the molecular effects of a novel KDM5i compound and suggests that combinatorial inhibition along with DAC represents a new area to explore in translational epigenetics.Significance: This study offers a first look into the molecular effects of a novel KDM5 inhibitory compound, suggesting how its use in combination with DNA methylation inhibitors presents new opportunities to explore in translational cancer epigenetics. Cancer Res; 78(5); 1127-39. ©2017 AACR.
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Affiliation(s)
- Benjamin R Leadem
- Department of Oncology, the Sidney Kimmel Comprehensive Cancer Research Center at Johns Hopkins University, Baltimore, Maryland
| | - Ioannis Kagiampakis
- Department of Oncology, the Sidney Kimmel Comprehensive Cancer Research Center at Johns Hopkins University, Baltimore, Maryland
| | - Catherine Wilson
- Molecular Oncology, Genentech Inc., South San Francisco, California
| | - Tommy K Cheung
- Protein Chemistry, Genentech Inc., South San Francisco, California
| | - David Arnott
- Protein Chemistry, Genentech Inc., South San Francisco, California
| | - Patrick Trojer
- Constellation Pharmaceuticals, Inc., Cambridge, Massachusetts
| | - Marie Classon
- Molecular Oncology, Genentech Inc., South San Francisco, California
| | - Hariharan Easwaran
- Department of Oncology, the Sidney Kimmel Comprehensive Cancer Research Center at Johns Hopkins University, Baltimore, Maryland
| | - Stephen B Baylin
- Department of Oncology, the Sidney Kimmel Comprehensive Cancer Research Center at Johns Hopkins University, Baltimore, Maryland.
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73
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Planello AC, Singhania R, Kron KJ, Bailey SD, Roulois D, Lupien M, Line SRP, de Souza AP, De Carvalho DD. Pre-neoplastic epigenetic disruption of transcriptional enhancers in chronic inflammation. Oncotarget 2017; 7:15772-86. [PMID: 26908456 PMCID: PMC4941276 DOI: 10.18632/oncotarget.7513] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 02/09/2016] [Indexed: 02/06/2023] Open
Abstract
Chronic periodontitis (CP) is a chronic inflammatory disease independently associated with higher incidence of oral cavity squamous cell carcinoma (OSCC). However, the molecular mechanism responsible for this increased incidence is unknown. Here we profiled the DNA methylome of CP patients and healthy controls and compared to a large set of OSCC samples from TCGA. We observed a significant overlap between the altered DNA methylation patterns in CP and in OSCC, suggesting an emergence of a pre-neoplastic epigenome in CP. Remarkably, the hypermethylated CpGs in CP were significantly enriched for enhancer elements. This aberrant enhancer methylation is functional and able to disrupt enhancer activity by preventing the binding of chromatin looping factors. This study provides new insights on the molecular mechanisms linking chronic inflammation and tumor predisposition, highlighting the role of epigenetic disruption of transcriptional enhancers.
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Affiliation(s)
- Aline C Planello
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada.,Department of Morphology, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Rajat Singhania
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Ken J Kron
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Swneke D Bailey
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - David Roulois
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Mathieu Lupien
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Sérgio R Peres Line
- Department of Morphology, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Ana Paula de Souza
- Department of Morphology, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Daniel D De Carvalho
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
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74
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Jägle S, Busch H, Freihen V, Beyes S, Schrempp M, Boerries M, Hecht A. SNAIL1-mediated downregulation of FOXA proteins facilitates the inactivation of transcriptional enhancer elements at key epithelial genes in colorectal cancer cells. PLoS Genet 2017; 13:e1007109. [PMID: 29155818 PMCID: PMC5714381 DOI: 10.1371/journal.pgen.1007109] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 12/04/2017] [Accepted: 11/08/2017] [Indexed: 01/04/2023] Open
Abstract
Phenotypic conversion of tumor cells through epithelial-mesenchymal transition (EMT) requires massive gene expression changes. How these are brought about is not clear. Here we examined the impact of the EMT master regulator SNAIL1 on the FOXA family of transcription factors which are distinguished by their particular competence to induce chromatin reorganization for the activation of transcriptional enhancer elements. We show that the expression of SNAIL1 and FOXA genes is anticorrelated in transcriptomes of colorectal tumors and cell lines. In cellular EMT models, ectopically expressed Snail1 directly represses FOXA1 and triggers downregulation of all FOXA family members, suggesting that loss of FOXA expression promotes EMT. Indeed, cells with CRISPR/Cas9-induced FOXA-deficiency acquire mesenchymal characteristics. Furthermore, ChIP-seq data analysis of FOXA chromosomal distribution in relation to chromatin structural features which characterize distinct states of transcriptional activity, revealed preferential localization of FOXA factors to transcriptional enhancers at signature genes that distinguish epithelial from mesenchymal colon tumors. To validate the significance of this association, we investigated the impact of FOXA factors on structure and function of enhancers at the CDH1, CDX2 and EPHB3 genes. FOXA-deficiency and expression of dominant negative FOXA2 led to chromatin condensation at these enhancer elements. Site-directed mutagenesis of FOXA binding sites in reporter gene constructs and by genome-editing in situ impaired enhancer activity and completely abolished the active chromatin state of the EPHB3 enhancer. Conversely, expression of FOXA factors in cells with inactive CDX2 and EPHB3 enhancers led to chromatin opening and de novo deposition of the H3K4me1 and H3K27ac marks. These findings establish the pioneer function of FOXA factors at enhancer regions of epithelial genes and demonstrate their essential role in maintaining enhancer structure and function. Thus, by repressing FOXA family members, SNAIL1 targets transcription factors at strategically important positions in gene-regulatory hierarchies, which may facilitate transcriptional reprogramming during EMT. Cancer patient mortality is overwhelmingly due to distant organ metastases. Epithelial-mesenchymal transition is a process thought to facilitate local invasion and dissemination of cancer cells, thereby promoting metastasis. The conversion of epithelial cells into mesenchymal, fibroblast-like cells requires profound gene expression changes. A few transcription factors like SNAIL1 can initiate these changes, but are unlikely to be solely responsible for all of them. In our study we asked, whether destabilization of epithelial gene expression programs could involve FOXA transcription factors. FOXA factors represent a special subgroup of regulatory proteins, so-called pioneer factors, with unique roles in the activation of transcriptional enhancers which are key regulatory DNA elements that orchestrate spatio-temporal gene expression. In a model of colorectal cancer we found that SNAIL1 represses FOXA factors, and demonstrate that FOXA factors are associated with enhancer elements at epithelial signature genes. Indeed, FOXA factors are sufficient to initiate enhancer activation and necessary to maintain their activity. Our findings indicate that SNAIL1 induces pervasive repression of epithelial genes through a hierarchical scheme of alterations in transcription factor expression which may be applicable to other instances of cell fate changes and transcriptional reprogramming.
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Affiliation(s)
- Sabine Jägle
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Hauke Busch
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Freiburg, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
- Institute of Experimental Dermatology and Institute of Cardiogenetics, University of Lübeck, Lübeck, Germany
| | - Vivien Freihen
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Sven Beyes
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Monika Schrempp
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Melanie Boerries
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Cancer Consortium (DKTK), Freiburg, Germany
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Andreas Hecht
- Institute of Molecular Medicine and Cell Research, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- BIOSS Centre for Biological Signalling Studies, University of Freiburg, Freiburg, Germany
- * E-mail:
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75
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Ho JC, Abdullah LN, Pang QY, Jha S, Chow EKH, Yang H, Kato H, Poellinger L, Ueda J, Lee KL. Inhibition of the H3K9 methyltransferase G9A attenuates oncogenicity and activates the hypoxia signaling pathway. PLoS One 2017; 12:e0188051. [PMID: 29145444 PMCID: PMC5690420 DOI: 10.1371/journal.pone.0188051] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 10/31/2017] [Indexed: 12/12/2022] Open
Abstract
Epigenetic mechanisms play important roles in the regulation of tumorigenesis, and hypoxia-induced epigenetic changes may be critical for the adaptation of cancer cells to the hypoxic microenvironment of solid tumors. Previously, we showed that loss-of-function of the hypoxia-regulated H3K9 methyltransferase G9A attenuates tumor growth. However, the mechanisms by which blockade of G9A leads to a tumor suppressive effect remain poorly understood. We show that G9A is highly expressed in breast cancer and is associated with poor patient prognosis, where it may function as a potent oncogenic driver. In agreement with this, G9A inhibition by the small molecule inhibitor, BIX-01294, leads to increased cell death and impaired cell migration, cell cycle and anchorage-independent growth. Interestingly, whole transcriptome analysis revealed that genes involved in diverse cancer cell functions become hypoxia-responsive upon G9A inhibition. This was accompanied by the upregulation of the hypoxia inducible factors HIF1α and HIF2α during BIX-01294 treatment even in normoxia that may facilitate the tumor suppressive effects of BIX-01294. HIF inhibition was able to reverse some of the transcriptional changes induced by BIX-01294 in hypoxia, indicating that the HIFs may be important drivers of these derepressed target genes. Therefore, we show that G9A is a key mediator of oncogenic processes in breast cancer cells and G9A inhibition by BIX-01294 can successfully attenuate oncogenicity even in hypoxia.
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Affiliation(s)
- Jolene Caifeng Ho
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- * E-mail: (JCH); (JU); (KLL)
| | - Lissa Nurrul Abdullah
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Qing You Pang
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Sudhakar Jha
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Edward Kai-Hua Chow
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Henry Yang
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Hiroyuki Kato
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | - Lorenz Poellinger
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- Department of Cell and Molecular Biology, Karolinska Institutet, Stockholm, Sweden
| | - Jun Ueda
- Center for Advanced Research and Education, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
- * E-mail: (JCH); (JU); (KLL)
| | - Kian Leong Lee
- Cancer Stem Cells and Biology Program, Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- * E-mail: (JCH); (JU); (KLL)
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76
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Abstract
Noncoding DNA regions have central roles in human biology, evolution, and disease. ChromHMM helps to annotate the noncoding genome using epigenomic information across one or multiple cell types. It combines multiple genome-wide epigenomic maps, and uses combinatorial and spatial mark patterns to infer a complete annotation for each cell type. ChromHMM learns chromatin-state signatures using a multivariate hidden Markov model (HMM) that explicitly models the combinatorial presence or absence of each mark. ChromHMM uses these signatures to generate a genome-wide annotation for each cell type by calculating the most probable state for each genomic segment. ChromHMM provides an automated enrichment analysis of the resulting annotations to facilitate the functional interpretations of each chromatin state. ChromHMM is distinguished by its modeling emphasis on combinations of marks, its tight integration with downstream functional enrichment analyses, its speed, and its ease of use. Chromatin states are learned, annotations are produced, and enrichments are computed within 1 d.
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77
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DNA methylation at enhancers identifies distinct breast cancer lineages. Nat Commun 2017; 8:1379. [PMID: 29123100 PMCID: PMC5680222 DOI: 10.1038/s41467-017-00510-x] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Accepted: 06/27/2017] [Indexed: 02/06/2023] Open
Abstract
Breast cancers exhibit genome-wide aberrant DNA methylation patterns. To investigate how these affect the transcriptome and which changes are linked to transformation or progression, we apply genome-wide expression-methylation quantitative trait loci (emQTL) analysis between DNA methylation and gene expression. On a whole genome scale, in cis and in trans, DNA methylation and gene expression have remarkably and reproducibly conserved patterns of association in three breast cancer cohorts (n = 104, n = 253 and n = 277). The expression-methylation quantitative trait loci associations form two main clusters; one relates to tumor infiltrating immune cell signatures and the other to estrogen receptor signaling. In the estrogen related cluster, using ChromHMM segmentation and transcription factor chromatin immunoprecipitation sequencing data, we identify transcriptional networks regulated in a cell lineage-specific manner by DNA methylation at enhancers. These networks are strongly dominated by ERα, FOXA1 or GATA3 and their targets were functionally validated using knockdown by small interfering RNA or GRO-seq analysis after transcriptional stimulation with estrogen.
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78
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Acetylated histone variant H2A.Z is involved in the activation of neo-enhancers in prostate cancer. Nat Commun 2017; 8:1346. [PMID: 29116202 PMCID: PMC5676741 DOI: 10.1038/s41467-017-01393-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Accepted: 09/14/2017] [Indexed: 11/10/2022] Open
Abstract
Acetylation of the histone variant H2A.Z (H2A.Zac) occurs at active promoters and is associated with oncogene activation in prostate cancer, but its role in enhancer function is still poorly understood. Here we show that H2A.Zac containing nucleosomes are commonly redistributed to neo-enhancers in cancer resulting in a concomitant gain of chromatin accessibility and ectopic gene expression. Notably incorporation of acetylated H2A.Z nucleosomes is a pre-requisite for activation of Androgen receptor (AR) associated enhancers. H2A.Zac nucleosome occupancy is rapidly remodeled to flank the AR sites to initiate the formation of nucleosome-free regions and the production of AR-enhancer RNAs upon androgen treatment. Remarkably higher levels of global H2A.Zac correlate with poorer prognosis. Altogether these data demonstrate the novel contribution of H2A.Zac in activation of newly formed enhancers in prostate cancer. Acetylation of the histone variant H2A.Z at gene promoters is associated with oncogene activation; however, it is unclear if such modification has a role in regulating the function of enhancers. Here the authors show that acetylated H2A.Z is redistributed at cancer neo-enhancers and regulates the activity of specific enhancers of cancer-related genes.
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79
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Kalender Atak Z, Imrichova H, Svetlichnyy D, Hulselmans G, Christiaens V, Reumers J, Ceulemans H, Aerts S. Identification of cis-regulatory mutations generating de novo edges in personalized cancer gene regulatory networks. Genome Med 2017; 9:80. [PMID: 28854983 PMCID: PMC5575942 DOI: 10.1186/s13073-017-0464-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 08/02/2017] [Indexed: 01/05/2023] Open
Abstract
The identification of functional non-coding mutations is a key challenge in the field of genomics. Here we introduce μ-cisTarget to filter, annotate and prioritize cis-regulatory mutations based on their putative effect on the underlying "personal" gene regulatory network. We validated μ-cisTarget by re-analyzing the TAL1 and LMO1 enhancer mutations in T-ALL, and the TERT promoter mutation in melanoma. Next, we re-sequenced the full genomes of ten cancer cell lines and used matched transcriptome data and motif discovery to identify master regulators with de novo binding sites that result in the up-regulation of nearby oncogenic drivers. μ-cisTarget is available from http://mucistarget.aertslab.org .
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Affiliation(s)
- Zeynep Kalender Atak
- Laboratory of Computational Biology, VIB Center for Brain & Disease Research, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Hana Imrichova
- Laboratory of Computational Biology, VIB Center for Brain & Disease Research, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Dmitry Svetlichnyy
- Laboratory of Computational Biology, VIB Center for Brain & Disease Research, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Gert Hulselmans
- Laboratory of Computational Biology, VIB Center for Brain & Disease Research, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Valerie Christiaens
- Laboratory of Computational Biology, VIB Center for Brain & Disease Research, Leuven, Belgium
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Joke Reumers
- Discovery Sciences, Janssen Research & Development, Turnhoutseweg 30, 2340, Beerse, Belgium
| | - Hugo Ceulemans
- Discovery Sciences, Janssen Research & Development, Turnhoutseweg 30, 2340, Beerse, Belgium
| | - Stein Aerts
- Laboratory of Computational Biology, VIB Center for Brain & Disease Research, Leuven, Belgium.
- Department of Human Genetics, KU Leuven, Leuven, Belgium.
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80
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Nizovtseva EV, Clauvelin N, Todolli S, Polikanov YS, Kulaeva OI, Wengrzynek S, Olson WK, Studitsky VM. Nucleosome-free DNA regions differentially affect distant communication in chromatin. Nucleic Acids Res 2017; 45:3059-3067. [PMID: 27940560 PMCID: PMC5389534 DOI: 10.1093/nar/gkw1240] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 11/29/2016] [Indexed: 11/13/2022] Open
Abstract
Communication between distantly spaced genomic regions is one of the key features of gene regulation in eukaryotes. Chromatin per se can stimulate efficient enhancer-promoter communication (EPC); however, the role of chromatin structure and dynamics in this process remains poorly understood. Here we show that nucleosome spacing and the presence of nucleosome-free DNA regions can modulate chromatin structure/dynamics and, in turn, affect the rate of EPC in vitro and in silico. Increasing the length of internucleosomal linker DNA from 25 to 60 bp results in more efficient EPC. The presence of longer nucleosome-free DNA regions can positively or negatively affect the rate of EPC, depending upon the length and location of the DNA region within the chromatin fiber. Thus the presence of histone-free DNA regions can differentially affect the efficiency of EPC, suggesting that gene regulation over a distance could be modulated by changes in the length of internucleosomal DNA spacers.
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Affiliation(s)
- Ekaterina V Nizovtseva
- Cancer Epigenetics Program, Fox Chase Cancer Center, 333 Cottman Ave., Philadelphia, PA 19422, USA.,Department of Pharmacology, Robert Wood Johnson Medical School, Rutgers, the State University of New Jersey, 675 Hoes Lane, Piscataway, NJ 08854, USA
| | - Nicolas Clauvelin
- Department of Chemistry and Chemical Biology, Center for Quantitative Biology, Rutgers, the State University of New Jersey, 610 Taylor Rd., Piscataway, NJ 08854, USA
| | - Stefjord Todolli
- Department of Chemistry and Chemical Biology, Center for Quantitative Biology, Rutgers, the State University of New Jersey, 610 Taylor Rd., Piscataway, NJ 08854, USA
| | - Yury S Polikanov
- Department of Pharmacology, Robert Wood Johnson Medical School, Rutgers, the State University of New Jersey, 675 Hoes Lane, Piscataway, NJ 08854, USA
| | - Olga I Kulaeva
- Cancer Epigenetics Program, Fox Chase Cancer Center, 333 Cottman Ave., Philadelphia, PA 19422, USA.,Department of Pharmacology, Robert Wood Johnson Medical School, Rutgers, the State University of New Jersey, 675 Hoes Lane, Piscataway, NJ 08854, USA.,Biology Faculty, Moscow State University, Moscow 119991, Russia
| | - Scott Wengrzynek
- Department of Pharmacology, Robert Wood Johnson Medical School, Rutgers, the State University of New Jersey, 675 Hoes Lane, Piscataway, NJ 08854, USA
| | - Wilma K Olson
- Department of Chemistry and Chemical Biology, Center for Quantitative Biology, Rutgers, the State University of New Jersey, 610 Taylor Rd., Piscataway, NJ 08854, USA
| | - Vasily M Studitsky
- Cancer Epigenetics Program, Fox Chase Cancer Center, 333 Cottman Ave., Philadelphia, PA 19422, USA.,Laboratory of Epigenetics, Institute of Gene Biology, Russian Academy of Sciences, Moscow, Russia
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81
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Luo H, Xi Y, Li W, Li J, Li Y, Dong S, Peng L, Liu Y, Yu W. Cell identity bookmarking through heterogeneous chromatin landscape maintenance during the cell cycle. Hum Mol Genet 2017; 26:4231-4243. [DOI: 10.1093/hmg/ddx312] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 08/02/2017] [Indexed: 12/29/2022] Open
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82
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Charlet J, Duymich CE, Lay FD, Mundbjerg K, Dalsgaard Sørensen K, Liang G, Jones PA. Bivalent Regions of Cytosine Methylation and H3K27 Acetylation Suggest an Active Role for DNA Methylation at Enhancers. Mol Cell 2017; 62:422-431. [PMID: 27153539 DOI: 10.1016/j.molcel.2016.03.033] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 12/22/2015] [Accepted: 03/30/2016] [Indexed: 01/17/2023]
Abstract
The role of cytosine methylation in the structure and function of enhancers is not well understood. In this study, we investigate the role of DNA methylation at enhancers by comparing the epigenomes of the HCT116 cell line and its highly demethylated derivative, DKO1. Unlike promoters, a portion of regular and super- or stretch enhancers show active H3K27ac marks co-existing with extensive DNA methylation, demonstrating the unexpected presence of bivalent chromatin in both cultured and uncultured cells. Furthermore, our findings also show that bivalent regions have fewer nucleosome-depleted regions and transcription factor-binding sites than monovalent regions. Reduction of DNA methylation genetically or pharmacologically leads to a decrease of the H3K27ac mark. Thus, DNA methylation plays an unexpected dual role at enhancer regions, being anti-correlated focally at transcription factor-binding sites but positively correlated globally with the active H3K27ac mark to ensure structural enhancer integrity.
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Affiliation(s)
- Jessica Charlet
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Christopher E Duymich
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Fides D Lay
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Kamilla Mundbjerg
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; Department of Urology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | | | - Gangning Liang
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; Department of Urology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.
| | - Peter A Jones
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; Department of Urology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; Department of Biochemistry & Molecular Biology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA; Van Andel Research Institute, Grand Rapids, MI 49503, USA.
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83
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Pott S. Simultaneous measurement of chromatin accessibility, DNA methylation, and nucleosome phasing in single cells. eLife 2017; 6:e23203. [PMID: 28653622 PMCID: PMC5487215 DOI: 10.7554/elife.23203] [Citation(s) in RCA: 147] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Accepted: 05/26/2017] [Indexed: 12/23/2022] Open
Abstract
Gaining insights into the regulatory mechanisms that underlie the transcriptional variation observed between individual cells necessitates the development of methods that measure chromatin organization in single cells. Here I adapted Nucleosome Occupancy and Methylome-sequencing (NOMe-seq) to measure chromatin accessibility and endogenous DNA methylation in single cells (scNOMe-seq). scNOMe-seq recovered characteristic accessibility and DNA methylation patterns at DNase hypersensitive sites (DHSs). An advantage of scNOMe-seq is that sequencing reads are sampled independently of the accessibility measurement. scNOMe-seq therefore controlled for fragment loss, which enabled direct estimation of the fraction of accessible DHSs within individual cells. In addition, scNOMe-seq provided high resolution of chromatin accessibility within individual loci which was exploited to detect footprints of CTCF binding events and to estimate the average nucleosome phasing distances in single cells. scNOMe-seq is therefore well-suited to characterize the chromatin organization of single cells in heterogeneous cellular mixtures.
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Affiliation(s)
- Sebastian Pott
- Department of Human Genetics, University of Chicago, Chicago, United States
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84
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Guo F, Li L, Li J, Wu X, Hu B, Zhu P, Wen L, Tang F. Single-cell multi-omics sequencing of mouse early embryos and embryonic stem cells. Cell Res 2017. [PMID: 28621329 PMCID: PMC5539349 DOI: 10.1038/cr.2017.82] [Citation(s) in RCA: 228] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Single-cell epigenome sequencing techniques have recently been developed. However, the combination of different layers of epigenome sequencing in an individual cell has not yet been achieved. Here, we developed a single-cell multi-omics sequencing technology (single-cell COOL-seq) that can analyze the chromatin state/nucleosome positioning, DNA methylation, copy number variation and ploidy simultaneously from the same individual mammalian cell. We used this method to analyze the reprogramming of the chromatin state and DNA methylation in mouse preimplantation embryos. We found that within < 12 h of fertilization, each individual cell undergoes global genome demethylation together with the rapid and global reprogramming of both maternal and paternal genomes to a highly opened chromatin state. This was followed by decreased openness after the late zygote stage. Furthermore, from the late zygote to the 4-cell stage, the residual DNA methylation is preferentially preserved on intergenic regions of the paternal alleles and intragenic regions of maternal alleles in each individual blastomere. However, chromatin accessibility is similar between paternal and maternal alleles in each individual cell from the late zygote to the blastocyst stage. The binding motifs of several pluripotency regulators are enriched at distal nucleosome depleted regions from as early as the 2-cell stage. This indicates that the cis-regulatory elements of such target genes have been primed to an open state from the 2-cell stage onward, long before pluripotency is eventually established in the ICM of the blastocyst. Genes may be classified into homogeneously open, homogeneously closed and divergent states based on the chromatin accessibility of their promoter regions among individual cells. This can be traced to step-wise transitions during preimplantation development. Our study offers the first single-cell and parental allele-specific analysis of the genome-scale chromatin state and DNA methylation dynamics at single-base resolution in early mouse embryos and provides new insights into the heterogeneous yet highly ordered features of epigenomic reprogramming during this process.
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Affiliation(s)
- Fan Guo
- Beijing Advanced Innovation Center for Genomics, Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, College of Life Sciences, Peking University, Beijing 100871, China.,Biomedical Institute for Pioneering Investigation via Convergence, Peking University, Beijing 100871, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.,Group of Translational Medicine, Department of Obstetrics and Gynecology, Ministry of Education Key Laboratory of Obstetric, Gynecologic &Pediatric Diseases and Birth Defects, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Lin Li
- Beijing Advanced Innovation Center for Genomics, Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, College of Life Sciences, Peking University, Beijing 100871, China.,Biomedical Institute for Pioneering Investigation via Convergence, Peking University, Beijing 100871, China
| | - Jingyun Li
- Beijing Advanced Innovation Center for Genomics, Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, College of Life Sciences, Peking University, Beijing 100871, China.,Biomedical Institute for Pioneering Investigation via Convergence, Peking University, Beijing 100871, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China.,Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Xinglong Wu
- Beijing Advanced Innovation Center for Genomics, Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, College of Life Sciences, Peking University, Beijing 100871, China.,Biomedical Institute for Pioneering Investigation via Convergence, Peking University, Beijing 100871, China.,Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Boqiang Hu
- Beijing Advanced Innovation Center for Genomics, Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, College of Life Sciences, Peking University, Beijing 100871, China.,Biomedical Institute for Pioneering Investigation via Convergence, Peking University, Beijing 100871, China
| | - Ping Zhu
- Beijing Advanced Innovation Center for Genomics, Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, College of Life Sciences, Peking University, Beijing 100871, China.,Biomedical Institute for Pioneering Investigation via Convergence, Peking University, Beijing 100871, China.,Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Lu Wen
- Beijing Advanced Innovation Center for Genomics, Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, College of Life Sciences, Peking University, Beijing 100871, China.,Biomedical Institute for Pioneering Investigation via Convergence, Peking University, Beijing 100871, China
| | - Fuchou Tang
- Beijing Advanced Innovation Center for Genomics, Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, College of Life Sciences, Peking University, Beijing 100871, China.,Biomedical Institute for Pioneering Investigation via Convergence, Peking University, Beijing 100871, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
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85
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Khan A, Mathelier A. Intervene: a tool for intersection and visualization of multiple gene or genomic region sets. BMC Bioinformatics 2017; 18:287. [PMID: 28569135 PMCID: PMC5452382 DOI: 10.1186/s12859-017-1708-7] [Citation(s) in RCA: 270] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 05/23/2017] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND A common task for scientists relies on comparing lists of genes or genomic regions derived from high-throughput sequencing experiments. While several tools exist to intersect and visualize sets of genes, similar tools dedicated to the visualization of genomic region sets are currently limited. RESULTS To address this gap, we have developed the Intervene tool, which provides an easy and automated interface for the effective intersection and visualization of genomic region or list sets, thus facilitating their analysis and interpretation. Intervene contains three modules: venn to generate Venn diagrams of up to six sets, upset to generate UpSet plots of multiple sets, and pairwise to compute and visualize intersections of multiple sets as clustered heat maps. Intervene, and its interactive web ShinyApp companion, generate publication-quality figures for the interpretation of genomic region and list sets. CONCLUSIONS Intervene and its web application companion provide an easy command line and an interactive web interface to compute intersections of multiple genomic and list sets. They have the capacity to plot intersections using easy-to-interpret visual approaches. Intervene is developed and designed to meet the needs of both computer scientists and biologists. The source code is freely available at https://bitbucket.org/CBGR/intervene , with the web application available at https://asntech.shinyapps.io/intervene .
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Affiliation(s)
- Aziz Khan
- Centre for Molecular Medicine Norway (NCMM), Nordic EMBL Partnership, University of Oslo, 0318, Oslo, Norway.
| | - Anthony Mathelier
- Centre for Molecular Medicine Norway (NCMM), Nordic EMBL Partnership, University of Oslo, 0318, Oslo, Norway.
- Department of Cancer Genetics, Institute for Cancer Research, Oslo University Hospital Radiumhospitalet, 0310, Oslo, Norway.
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86
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Piao Y, Lee SK, Lee EJ, Robertson KD, Shi H, Ryu KH, Choi JH. CAME: identification of chromatin accessibility from nucleosome occupancy and methylome sequencing. Bioinformatics 2017; 33:1139-1146. [PMID: 28035030 DOI: 10.1093/bioinformatics/btw785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 12/09/2016] [Indexed: 11/15/2022] Open
Abstract
Motivation Chromatin accessibility plays a key role in epigenetic regulation of gene activation and silencing. Open chromatin regions allow regulatory elements such as transcription factors and polymerases to bind for gene expression while closed chromatin regions prevent the activity of transcriptional machinery. Recently, Methyltransferase Accessibility Protocol for individual templates-Bisulfite Genome Sequencing (MAPit-BGS) and nucleosome occupancy and methylome sequencing (NOMe-seq) have been developed for simultaneously profiling chromatin accessibility and DNA methylation on single molecules. Therefore, there is a great demand in developing computational methods to identify chromatin accessibility from MAPit-BGS and NOMe-seq. Results In this article, we present CAME (Chromatin Accessibility and Methylation), a seed-extension based approach that identifies chromatin accessibility from NOMe-seq. The efficiency and effectiveness of CAME were demonstrated through comparisons with other existing techniques on both simulated and real data, and the results show that our method not only can precisely identify chromatin accessibility but also outperforms other methods. Availability and Implementation CAME is implemented in java and the program is freely available online at http://sourceforge.net/projects/came/. Contacts jechoi@gru.edu or khryu@dblab.chungbuk.ac.kr. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Yongjun Piao
- Cancer Center, Georgia Regents University, Augusta, GA, USA.,College of Electrical and Computer Engineering, Chungbuk National University, Cheongju, Republic of Korea
| | - Seong Keon Lee
- Department of Statistics, Sungshin Women's University, Seoul, Republic of Korea
| | - Eun-Joon Lee
- Cancer Center, Georgia Regents University, Augusta, GA, USA
| | - Keith D Robertson
- Department of Molecular Pharmacology and Experimental Therapeutics, Center for Individualized Medicine, Mayo Clinic, Rochester, MN, USA
| | - Huidong Shi
- Cancer Center, Georgia Regents University, Augusta, GA, USA.,Department of Biochemistry and Molecular Biology
| | - Keun Ho Ryu
- College of Electrical and Computer Engineering, Chungbuk National University, Cheongju, Republic of Korea
| | - Jeong-Hyeon Choi
- Cancer Center, Georgia Regents University, Augusta, GA, USA.,Department of Biostatistics and Epidemiology, Georgia Regents University, Augusta, GA, USA.,Department of Applied Research, Marine Biodiversity Institute of Korea, Seocheon, Republic of Korea
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87
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Achinger-Kawecka J, Taberlay PC, Clark SJ. Alterations in Three-Dimensional Organization of the Cancer Genome and Epigenome. COLD SPRING HARBOR SYMPOSIA ON QUANTITATIVE BIOLOGY 2017; 81:41-51. [PMID: 28424341 DOI: 10.1101/sqb.2016.81.031013] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The structural and functional basis of the genome is provided by the three-dimensional (3D) chromatin state. To enable accurate gene regulation, enhancer elements and promoter regions are brought into close spatial proximity to ensure proper, cell type-specific gene expression. In cancer, genetic and epigenetic processes can deregulate the transcriptional program. To investigate whether the 3D chromatin state is also disrupted in cancer we performed Hi-C chromosome conformation sequencing in normal and prostate cancer cells and compared the chromatin interaction maps with changes to the genome and epigenome. Notably, we find that additional topologically associated domain (TAD) boundaries are formed in cancer cells resulting in smaller TADs and altered gene expression profiles. The new TAD boundaries are commonly associated with copy-number changes observed in the cancer genome. We also identified new cancer-specific chromatin loops within TADs that are enriched for enhancers and promoters. Finally, we find that many of the long-range epigenetically silenced (LRES) and long-range epigenetically active (LREA) regions in cancer are characterized by differential chromatin interactions. Together our data provide a new insight into charting alterations in higher-order structure and the relationship with genetic, epigenetic, and transcriptional changes across the cancer genome.
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Affiliation(s)
- Joanna Achinger-Kawecka
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales 2010, Australia.,St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Darlinghurst, New South Wales 2010, Australia
| | - Phillippa C Taberlay
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales 2010, Australia.,St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Darlinghurst, New South Wales 2010, Australia.,School of Medicine, Faculty of Health, University of Tasmania, Hobart, Tasmania 7000, Australia
| | - Susan J Clark
- Epigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, Darlinghurst, New South Wales 2010, Australia.,St. Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Darlinghurst, New South Wales 2010, Australia
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88
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Wijetunga NA, Pascual M, Tozour J, Delahaye F, Alani M, Adeyeye M, Wolkoff AW, Verma A, Greally JM. A pre-neoplastic epigenetic field defect in HCV-infected liver at transcription factor binding sites and polycomb targets. Oncogene 2017; 36:2030-2044. [PMID: 27721404 PMCID: PMC5383522 DOI: 10.1038/onc.2016.340] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 07/26/2016] [Accepted: 08/05/2016] [Indexed: 12/11/2022]
Abstract
The predisposition of patients with Hepatitis C virus (HCV) infection to hepatocellular carcinoma (HCC) involves components of viral infection, inflammation and time. The development of multifocal, genetically distinct tumours is suggestive of a field defect affecting the entire liver. The molecular susceptibility mediating such a field defect is not understood. One potential mediator of long-term cellular reprogramming is heritable (epigenetic) regulation of transcription, exemplified by DNA methylation. We studied epigenetic and transcriptional changes in HCV-infected livers in comparison with control, uninfected livers and HCC, allowing us to identify pre-neoplastic epigenetic and transcriptional events. We find the HCV-infected liver to have a pattern of acquisition of DNA methylation targeted to candidate enhancers active in liver cells, enriched for the binding sites of the FOXA1, FOXA2 and HNF4A transcription factors. These enhancers can be subdivided into those proximal to genes implicated in liver cancer or to genes involved in stem cell development, the latter distinguished by increased CG dinucleotide density and polycomb-mediated repression, manifested by the additional acquisition of histone H3 lysine 27 trimethylation (H3K27me3). Transcriptional studies on our samples showed that the increased DNA methylation at enhancers was associated with decreased local gene expression, results validated in independent samples from The Cancer Genome Atlas. Pharmacological depletion of H3K27me3 using the EZH2 inhibitor GSK343 in HepG2 cells suppressed cell growth and also revealed that local acquired DNA methylation was not dependent upon the presence of polycomb-mediated repression. The results support a model of HCV infection influencing the binding of transcription factors to cognate sites in the genome, with consequent local acquisition of DNA methylation, and the added repressive influence of polycomb at a subset of CG-dense cis-regulatory sequences. These epigenetic events occur before neoplastic transformation, resulting in what may be a pharmacologically reversible epigenetic field defect in HCV-infected liver.
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Affiliation(s)
- N A Wijetunga
- Department of Genetics and Center for Epigenomics, Bronx, NY, USA
| | - M Pascual
- Department of Genetics and Center for Epigenomics, Bronx, NY, USA
- Centro de Investigación Médica Aplicada (CIMA), IDISNA, Oncohematology Department, Pamplona, Spain
| | - J Tozour
- Department of Genetics and Center for Epigenomics, Bronx, NY, USA
| | - F Delahaye
- Department of Obstetrics, Gynecology and Women's Health, Bronx, NY, USA
| | - M Alani
- Department of Medicine (Division of Gastroenterology and Liver Diseases), Bronx, NY, USA
- Marion Bessin Liver Research Center, Bronx, NY, USA
| | - M Adeyeye
- Department of Genetics and Center for Epigenomics, Bronx, NY, USA
| | - A W Wolkoff
- Department of Medicine (Division of Gastroenterology and Liver Diseases), Bronx, NY, USA
- Marion Bessin Liver Research Center, Bronx, NY, USA
| | - A Verma
- Department of Medicine (Oncology), Albert Einstein College of Medicine, Bronx, NY, USA
| | - J M Greally
- Department of Genetics and Center for Epigenomics, Bronx, NY, USA
- Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx NY 10461, USA. E-mail:
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89
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Feng Y, Rhie SK, Huo D, Ruiz-Narvaez EA, Haddad SA, Ambrosone CB, John EM, Bernstein L, Zheng W, Hu JJ, Ziegler RG, Nyante S, Bandera EV, Ingles SA, Press MF, Deming SL, Rodriguez-Gil JL, Zheng Y, Yao S, Han YJ, Ogundiran TO, Rebbeck TR, Adebamowo C, Ojengbede O, Falusi AG, Hennis A, Nemesure B, Ambs S, Blot W, Cai Q, Signorello L, Nathanson KL, Lunetta KL, Sucheston-Campbell LE, Bensen JT, Chanock SJ, Marchand LL, Olshan AF, Kolonel LN, Conti DV, Coetzee GA, Stram DO, Olopade OI, Palmer JR, Haiman CA. Characterizing Genetic Susceptibility to Breast Cancer in Women of African Ancestry. Cancer Epidemiol Biomarkers Prev 2017; 26:1016-1026. [PMID: 28377418 DOI: 10.1158/1055-9965.epi-16-0567] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 10/07/2016] [Accepted: 03/15/2017] [Indexed: 01/01/2023] Open
Abstract
Background: Genome-wide association studies have identified approximately 100 common genetic variants associated with breast cancer risk, the majority of which were discovered in women of European ancestry. Because of different patterns of linkage disequilibrium, many of these genetic markers may not represent signals in populations of African ancestry.Methods: We tested 74 breast cancer risk variants and conducted fine-mapping of these susceptibility regions in 6,522 breast cancer cases and 7,643 controls of African ancestry from three genetic consortia (AABC, AMBER, and ROOT).Results: Fifty-four of the 74 variants (73%) were found to have ORs that were directionally consistent with those previously reported, of which 12 were nominally statistically significant (P < 0.05). Through fine-mapping, in six regions (3p24, 12p11, 14q13, 16q12/FTO, 16q23, 19p13), we observed seven markers that better represent the underlying risk variant for overall breast cancer or breast cancer subtypes, whereas in another two regions (11q13, 16q12/TOX3), we identified suggestive evidence of signals that are independent of the reported index variant. Overlapping chromatin features and regulatory elements suggest that many of the risk alleles lie in regions with biological functionality.Conclusions: Through fine-mapping of known susceptibility regions, we have revealed alleles that better characterize breast cancer risk in women of African ancestry.Impact: The risk alleles identified represent genetic markers for modeling and stratifying breast cancer risk in women of African ancestry. Cancer Epidemiol Biomarkers Prev; 26(7); 1016-26. ©2017 AACR.
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Affiliation(s)
- Ye Feng
- Department of Preventive Medicine, Keck School of Medicine and Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California.
| | - Suhn Kyong Rhie
- Department of Preventive Medicine, Keck School of Medicine and Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Dezheng Huo
- Department of Public Health Sciences, University of Chicago, Chicago, Illinois
| | | | - Stephen A Haddad
- Slone Epidemiology Center at Boston University, Boston, Massachusetts
| | - Christine B Ambrosone
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, New York
| | - Esther M John
- Cancer Prevention Institute of California, Fremont, California.,Department of Health Research and Policy (Epidemiology) and Stanford Cancer Institute, Stanford University School of Medicine, Stanford, California
| | - Leslie Bernstein
- Division of Cancer Etiology, Department of Population Sciences, Beckman Research Institute, City of Hope, Duarte, California
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Jennifer J Hu
- Sylvester Comprehensive Cancer Center and Department of Epidemiology and Public Health, University of Miami Miller School of Medicine, Miami, Florida
| | - Regina G Ziegler
- Epidemiology and Biostatistics Program, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Sarah Nyante
- Department of Epidemiology, Gillings School of Global Public Health and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Elisa V Bandera
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
| | - Sue A Ingles
- Department of Preventive Medicine, Keck School of Medicine and Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Michael F Press
- Department of Pathology, Keck School of Medicine and Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Sandra L Deming
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Jorge L Rodriguez-Gil
- Sylvester Comprehensive Cancer Center and Department of Epidemiology and Public Health, University of Miami Miller School of Medicine, Miami, Florida
| | - Yonglan Zheng
- Department of Medicine, University of Chicago, Chicago, Illinois
| | - Song Yao
- Roswell Park Cancer Institute, Buffalo, New York
| | - Yoo-Jeong Han
- Department of Medicine, University of Chicago, Chicago, Illinois
| | - Temidayo O Ogundiran
- Department of Surgery, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Timothy R Rebbeck
- Dana Farber Cancer Institute & Harvard T. H. Chan School of Public Health, Boston, Maryland
| | - Clement Adebamowo
- Department of Epidemiology & Preventive Medicine, University of Maryland, Baltimore, Maryland
| | - Oladosu Ojengbede
- Center for Population and Reproductive Health, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Adeyinka G Falusi
- Institute for Medical Research and Training, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Anselm Hennis
- Chronic Disease Research Centre, Tropical Medicine Research Institute, University of the West Indies, Bridgetown, Barbados.,Department of Preventive Medicine, State University of New York at Stony Brook, Stony Brook, New York
| | - Barbara Nemesure
- Department of Preventive Medicine, State University of New York at Stony Brook, Stony Brook, New York
| | - Stefan Ambs
- Laboratory of Human Carcinogenesis, National Cancer Institute, Bethesda, Maryland
| | - William Blot
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Qiuyin Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, and Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee
| | - Lisa Signorello
- Cancer Prevention Fellowship Program, National Cancer Institute, Bethesda, Maryland
| | | | - Kathryn L Lunetta
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts
| | | | - Jeannette T Bensen
- Department of Epidemiology, Gillings School of Global Public Health and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Stephen J Chanock
- Epidemiology and Biostatistics Program, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland
| | - Loic Le Marchand
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, Hawaii
| | - Andrew F Olshan
- Department of Epidemiology, Gillings School of Global Public Health and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Laurence N Kolonel
- Epidemiology Program, University of Hawaii Cancer Center, Honolulu, Hawaii
| | - David V Conti
- Department of Preventive Medicine, Keck School of Medicine and Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Gerhard A Coetzee
- Department of Preventive Medicine, Keck School of Medicine and Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | - Daniel O Stram
- Department of Preventive Medicine, Keck School of Medicine and Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California
| | | | - Julie R Palmer
- Slone Epidemiology Center at Boston University, Boston, Massachusetts
| | - Christopher A Haiman
- Department of Preventive Medicine, Keck School of Medicine and Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, California.
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90
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Savio AJ, Mrkonjic M, Lemire M, Gallinger S, Knight JA, Bapat B. The dynamic DNA methylation landscape of the mutL homolog 1 shore is altered by MLH1-93G>A polymorphism in normal tissues and colorectal cancer. Clin Epigenetics 2017; 9:26. [PMID: 28293327 PMCID: PMC5345264 DOI: 10.1186/s13148-017-0326-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 03/02/2017] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Colorectal cancers (CRCs) undergo distinct genetic and epigenetic alterations. Expression of mutL homolog 1 (MLH1), a mismatch repair gene that corrects DNA replication errors, is lost in up to 15% of sporadic tumours due to mutation or, more commonly, due to DNA methylation of its promoter CpG island. A single nucleotide polymorphism (SNP) in the CpG island of MLH1 (MLH1-93G>A or rs1800734) is associated with CpG island hypermethylation and decreased MLH1 expression in CRC tumours. Further, in peripheral blood mononuclear cell (PBMC) DNA of both CRC cases and non-cancer controls, the variant allele of rs1800734 is associated with hypomethylation at the MLH1 shore, a region upstream of its CpG island that is less dense in CpG sites. RESULTS To determine whether this genotype-epigenotype association is present in other tissue types, including colorectal tumours, we assessed DNA methylation in matched normal colorectal tissue, tumour, and PBMC DNA from 349 population-based CRC cases recruited from the Ontario Familial Colorectal Cancer Registry. Using the semi-quantitative real-time PCR-based MethyLight assay, MLH1 shore methylation was significantly higher in tumour tissue than normal colon or PBMCs (P < 0.01). When shore methylation levels were stratified by SNP genotype, normal colorectal DNA and PBMC DNA were significantly hypomethylated in association with variant SNP genotype (P < 0.05). However, this association was lost in tumour DNA. Among distinct stages of CRC, metastatic stage IV CRC tumours incurred significant hypomethylation compared to stage I-III cases, irrespective of genotype status. Shore methylation of MLH1 was not associated with MSI status or promoter CpG island hypermethylation, regardless of genotype. To confirm these results, bisulfite sequencing was performed in matched tumour and normal colorectal specimens from six CRC cases, including two cases per genotype (wildtype, heterozygous, and homozygous variant). Bisulfite sequencing results corroborated the methylation patterns found by MethyLight, with significant hypomethylation in normal colorectal tissue of variant SNP allele carriers. CONCLUSIONS These results indicate that the normal tissue types tested (colorectum and PBMC) experience dynamic genotype-associated epigenetic alterations at the MLH1 shore, whereas tumour DNA incurs aberrant hypermethylation compared to normal DNA.
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Affiliation(s)
- Andrea J. Savio
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 60 Murray St., Toronto, Ontario M5T 3L9 Canada
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, 27 King’s College Circle, Toronto, Ontario M5S 1A1 Canada
| | - Miralem Mrkonjic
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 60 Murray St., Toronto, Ontario M5T 3L9 Canada
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, 27 King’s College Circle, Toronto, Ontario M5S 1A1 Canada
| | - Mathieu Lemire
- Ontario Institute for Cancer Research, 661 University Avenue, Toronto, Ontario M5G 0A3 Canada
| | - Steven Gallinger
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 60 Murray St., Toronto, Ontario M5T 3L9 Canada
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, 27 King’s College Circle, Toronto, Ontario M5S 1A1 Canada
- Ontario Institute for Cancer Research, 661 University Avenue, Toronto, Ontario M5G 0A3 Canada
- Ontario Familial Colorectal Cancer Registry, Cancer Care Ontario, 60 Murray St., Toronto, Ontario M5T 3L9 Canada
- Department of Surgery, University Health Network, 200 Elizabeth St., Toronto, ON M5G 2C4 Canada
| | - Julia A. Knight
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 60 Murray St., Toronto, Ontario M5T 3L9 Canada
- Dalla Lana School of Public Health, University of Toronto, 155 College St., Toronto, ON M5T 3M7 Canada
| | - Bharat Bapat
- Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 60 Murray St., Toronto, Ontario M5T 3L9 Canada
- Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, 27 King’s College Circle, Toronto, Ontario M5S 1A1 Canada
- Department of Pathology, University Health Network, 200 Elizabeth St., Toronto, ON M5G 2C4 Canada
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91
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Ahmed M, Sallari RC, Guo H, Moore JH, He HH, Lupien M. Variant Set Enrichment: an R package to identify disease-associated functional genomic regions. BioData Min 2017; 10:9. [PMID: 28239419 PMCID: PMC5320724 DOI: 10.1186/s13040-017-0129-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 02/14/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Genetic predispositions to diseases populate the noncoding regions of the human genome. Delineating their functional basis can inform on the mechanisms contributing to disease development. However, this remains a challenge due to the poor characterization of the noncoding genome. Here, we propose an R package that can pinpoint which genomic features are etiologically important based on the genetic predispositions. RESULTS Variant Set Enrichment (VSE) is an R package to calculate the enrichment of a set of disease-associated variants across functionally annotated genomic regions, consequently highlighting the mechanisms important in the etiology of the disease studied. CONCLUSIONS VSE is implemented as an R package and can easily be implemented in any system with R.
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Affiliation(s)
- Musaddeque Ahmed
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON Canada
| | | | - Haiyang Guo
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON Canada
| | - Jason H Moore
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA USA
| | - Housheng Hansen He
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON Canada.,Department of Medical Biophysics, University of Toronto, Toronto, ON Canada
| | - Mathieu Lupien
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON Canada.,Ontario Institute for Cancer Research, Toronto, ON Canada
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92
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Vincent M, Mundbjerg K, Skou Pedersen J, Liang G, Jones PA, Ørntoft TF, Dalsgaard Sørensen K, Wiuf C. epiG: statistical inference and profiling of DNA methylation from whole-genome bisulfite sequencing data. Genome Biol 2017; 18:38. [PMID: 28222791 PMCID: PMC5320668 DOI: 10.1186/s13059-017-1168-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 02/07/2017] [Indexed: 02/11/2023] Open
Abstract
The study of epigenetic heterogeneity at the level of individual cells and in whole populations is the key to understanding cellular differentiation, organismal development, and the evolution of cancer. We develop a statistical method, epiG, to infer and differentiate between different epi-allelic haplotypes, annotated with CpG methylation status and DNA polymorphisms, from whole-genome bisulfite sequencing data, and nucleosome occupancy from NOMe-seq data. We demonstrate the capabilities of the method by inferring allele-specific methylation and nucleosome occupancy in cell lines, and colon and tumor samples, and by benchmarking the method against independent experimental data.
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Affiliation(s)
- Martin Vincent
- Department of Mathematical Sciences, University of Copenhagen, Copenhagen, 2100, Denmark
| | - Kamilla Mundbjerg
- USC Norris Comprehensive Cancer Center, Keck School of Medicine, Los Angeles, 90089-9176, CA, USA
| | - Jakob Skou Pedersen
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, 8200, Denmark
| | - Gangning Liang
- Department of Urology, Keck School of Medicine, University of Southern California, Los Angeles, 90089, CA, USA
| | - Peter A Jones
- Van Andel Research Institute, Grand Rapids, 49503, MI, USA
| | - Torben Falck Ørntoft
- Department of Molecular Medicine, Aarhus University Hospital, Aarhus, 8200, Denmark
| | | | - Carsten Wiuf
- Department of Mathematical Sciences, University of Copenhagen, Copenhagen, 2100, Denmark.
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93
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Abraham BJ, Hnisz D, Weintraub AS, Kwiatkowski N, Li CH, Li Z, Weichert-Leahey N, Rahman S, Liu Y, Etchin J, Li B, Shen S, Lee TI, Zhang J, Look AT, Mansour MR, Young RA. Small genomic insertions form enhancers that misregulate oncogenes. Nat Commun 2017; 8:14385. [PMID: 28181482 PMCID: PMC5309821 DOI: 10.1038/ncomms14385] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 12/22/2016] [Indexed: 01/04/2023] Open
Abstract
The non-coding regions of tumour cell genomes harbour a considerable fraction of total DNA sequence variation, but the functional contribution of these variants to tumorigenesis is ill-defined. Among these non-coding variants, somatic insertions are among the least well characterized due to challenges with interpreting short-read DNA sequences. Here, using a combination of Chip-seq to enrich enhancer DNA and a computational approach with multiple DNA alignment procedures, we identify enhancer-associated small insertion variants. Among the 102 tumour cell genomes we analyse, small insertions are frequently observed in enhancer DNA sequences near known oncogenes. Further study of one insertion, somatically acquired in primary leukaemia tumour genomes, reveals that it nucleates formation of an active enhancer that drives expression of the LMO2 oncogene. The approach described here to identify enhancer-associated small insertion variants provides a foundation for further study of these abnormalities across human cancers. Sequencing initiatives have detected multiple types of mutations in cancer. Here the authors, analysing enhancer-targeting sequence data, show that small insertions in transcriptional enhancers are frequently found near oncogenes, and demonstrate how one mutation deregulates expression of LMO2 in leukemia cells.
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Affiliation(s)
- Brian J Abraham
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, Massachusetts 02142, USA
| | - Denes Hnisz
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, Massachusetts 02142, USA
| | - Abraham S Weintraub
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, Massachusetts 02142, USA.,Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Nicholas Kwiatkowski
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, Massachusetts 02142, USA
| | - Charles H Li
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, Massachusetts 02142, USA.,Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Zhaodong Li
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02215, USA.,Division of Hematology/Oncology, Children's Hospital, Boston, Massachusetts 02115, USA
| | - Nina Weichert-Leahey
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02215, USA.,Division of Hematology/Oncology, Children's Hospital, Boston, Massachusetts 02115, USA
| | - Sunniyat Rahman
- Department of Haematology, UCL Cancer Institute, University College London, London WC1E 6DD, UK
| | - Yu Liu
- Department of Computational Biology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA
| | - Julia Etchin
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02215, USA.,Division of Hematology/Oncology, Children's Hospital, Boston, Massachusetts 02115, USA
| | - Benshang Li
- Key Laboratory of Pediatric Hematology &Oncology Ministry of Health, Department of Hematology &Oncology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.,Pediatric Translational Medicine Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Shuhong Shen
- Key Laboratory of Pediatric Hematology &Oncology Ministry of Health, Department of Hematology &Oncology, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China.,Pediatric Translational Medicine Institute, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China
| | - Tong Ihn Lee
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, Massachusetts 02142, USA
| | - Jinghui Zhang
- Department of Computational Biology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA
| | - A Thomas Look
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02215, USA.,Division of Hematology/Oncology, Children's Hospital, Boston, Massachusetts 02115, USA
| | - Marc R Mansour
- Department of Haematology, UCL Cancer Institute, University College London, London WC1E 6DD, UK
| | - Richard A Young
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, Massachusetts 02142, USA.,Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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94
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Levo M, Avnit-Sagi T, Lotan-Pompan M, Kalma Y, Weinberger A, Yakhini Z, Segal E. Systematic Investigation of Transcription Factor Activity in the Context of Chromatin Using Massively Parallel Binding and Expression Assays. Mol Cell 2017; 65:604-617.e6. [DOI: 10.1016/j.molcel.2017.01.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Revised: 11/28/2016] [Accepted: 01/10/2017] [Indexed: 10/20/2022]
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95
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Ye Y, Li M, Gu L, Chen X, Shi J, Zhang X, Jiang C. Chromatin remodeling during in vivo neural stem cells differentiating to neurons in early Drosophila embryos. Cell Death Differ 2016; 24:409-420. [PMID: 27858939 PMCID: PMC5344203 DOI: 10.1038/cdd.2016.135] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Revised: 10/06/2016] [Accepted: 10/18/2016] [Indexed: 12/25/2022] Open
Abstract
Neurons are a key component of the nervous system and differentiate from multipotent neural stem cells (NSCs). Chromatin remodeling has a critical role in the differentiation process. However, its in vivo epigenetic regulatory role remains unknown. We show here that nucleosome depletion regions (NDRs) form in both proximal promoters and distal enhancers during NSCs differentiating into neurons in the early Drosophila embryonic development. NDR formation in the regulatory regions involves nucleosome shift and eviction. Nucleosome occupancy in promoter NDRs is inversely proportional to the gene activity. Genes with promoter NDR formation during differentiation are enriched for functions related to neuron development and maturation. Active histone-modification signals (H3K4me3 and H3K9ac) in promoters are gained in neurons in two modes: de novo establishment to high levels or increase from the existing levels in NSCs. The gene sets corresponding to the two modes have different neuron-related functions. Dynamic changes of H3K27ac and H3K9ac signals in enhancers and promoters synergistically repress genes associated with neural stem or progenitor cell-related pluripotency and upregulate genes associated with neuron projection morphogenesis, neuron differentiation, and so on. Our results offer new insights into chromatin remodeling during in vivo neuron development and lay a foundation for its epigenetic regulatory mechanism study of other lineage specification.
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Affiliation(s)
- Youqiong Ye
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, The School of Life Sciences and Technology, The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China
| | - Min Li
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, The School of Life Sciences and Technology, The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China
| | - Liang Gu
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, The School of Life Sciences and Technology, The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China
| | - Xiaolong Chen
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, The School of Life Sciences and Technology, The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China
| | - Jiejun Shi
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, The School of Life Sciences and Technology, The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China
| | - Xiaobai Zhang
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, The School of Life Sciences and Technology, The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China
| | - Cizhong Jiang
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai Key Laboratory of Signaling and Disease Research, The School of Life Sciences and Technology, The Collaborative Innovation Center for Brain Science, Tongji University, Shanghai 200092, China
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96
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Rhie SK, Guo Y, Tak YG, Yao L, Shen H, Coetzee GA, Laird PW, Farnham PJ. Identification of activated enhancers and linked transcription factors in breast, prostate, and kidney tumors by tracing enhancer networks using epigenetic traits. Epigenetics Chromatin 2016; 9:50. [PMID: 27833659 PMCID: PMC5103450 DOI: 10.1186/s13072-016-0102-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 10/28/2016] [Indexed: 12/22/2022] Open
Abstract
Background Although technological advances now allow increased tumor profiling, a detailed understanding of the mechanisms leading to the development of different cancers remains elusive. Our approach toward understanding the molecular events that lead to cancer is to characterize changes in transcriptional regulatory networks between normal and tumor tissue. Because enhancer activity is thought to be critical in regulating cell fate decisions, we have focused our studies on distal regulatory elements and transcription factors that bind to these elements. Results Using DNA methylation data, we identified more than 25,000 enhancers that are differentially activated in breast, prostate, and kidney tumor tissues, as compared to normal tissues. We then developed an analytical approach called Tracing Enhancer Networks using Epigenetic Traits that correlates DNA methylation levels at enhancers with gene expression to identify more than 800,000 genome-wide links from enhancers to genes and from genes to enhancers. We found more than 1200 transcription factors to be involved in these tumor-specific enhancer networks. We further characterized several transcription factors linked to a large number of enhancers in each tumor type, including GATA3 in non-basal breast tumors, HOXC6 and DLX1 in prostate tumors, and ZNF395 in kidney tumors. We showed that HOXC6 and DLX1 are associated with different clusters of prostate tumor-specific enhancers and confer distinct transcriptomic changes upon knockdown in C42B prostate cancer cells. We also discovered de novo motifs enriched in enhancers linked to ZNF395 in kidney tumors. Conclusions Our studies characterized tumor-specific enhancers and revealed key transcription factors involved in enhancer networks for specific tumor types and subgroups. Our findings, which include a large set of identified enhancers and transcription factors linked to those enhancers in breast, prostate, and kidney cancers, will facilitate understanding of enhancer networks and mechanisms leading to the development of these cancers. Electronic supplementary material The online version of this article (doi:10.1186/s13072-016-0102-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Suhn Kyong Rhie
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1450 Biggy Street, NRT G511B, Los Angeles, CA 90089-9601 USA
| | - Yu Guo
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1450 Biggy Street, NRT G511B, Los Angeles, CA 90089-9601 USA
| | - Yu Gyoung Tak
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1450 Biggy Street, NRT G511B, Los Angeles, CA 90089-9601 USA
| | - Lijing Yao
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1450 Biggy Street, NRT G511B, Los Angeles, CA 90089-9601 USA
| | - Hui Shen
- Van Andel Research Institute, Grand Rapids, MI 49503 USA
| | | | - Peter W Laird
- Van Andel Research Institute, Grand Rapids, MI 49503 USA
| | - Peggy J Farnham
- Department of Biochemistry and Molecular Medicine and the Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, 1450 Biggy Street, NRT G511B, Los Angeles, CA 90089-9601 USA
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97
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DNA methylation and chromatin accessibility profiling of mouse and human fetal germ cells. Cell Res 2016; 27:165-183. [PMID: 27824029 PMCID: PMC5339845 DOI: 10.1038/cr.2016.128] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/19/2016] [Accepted: 09/21/2016] [Indexed: 12/24/2022] Open
Abstract
Chromatin remodeling is important for the epigenetic reprogramming of human primordial germ cells. However, the comprehensive chromatin state has not yet been analyzed for human fetal germ cells (FGCs). Here we use nucleosome occupancy and methylation sequencing method to analyze both the genome-wide chromatin accessibility and DNA methylome at a series of crucial time points during fetal germ cell development in both human and mouse. We find 116 887 and 137 557 nucleosome-depleted regions (NDRs) in human and mouse FGCs, covering a large set of germline-specific and highly dynamic regulatory genomic elements, such as enhancers. Moreover, we find that the distal NDRs are enriched specifically for binding motifs of the pluripotency and germ cell master regulators such as NANOG, SOX17, AP2γ and OCT4 in human FGCs, indicating the existence of a delicate regulatory balance between pluripotency-related genes and germ cell-specific genes in human FGCs, and the functional significance of these genes for germ cell development in vivo. Our work offers a comprehensive and high-resolution roadmap for dissecting chromatin state transition dynamics during the epigenomic reprogramming of human and mouse FGCs.
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98
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Sweet TJ, Ting AH. WOMEN IN CANCER THEMATIC REVIEW: Diverse functions of DNA methylation: implications for prostate cancer and beyond. Endocr Relat Cancer 2016; 23:T169-T178. [PMID: 27605446 DOI: 10.1530/erc-16-0306] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 09/07/2016] [Indexed: 12/31/2022]
Abstract
Prostate cancer is one of the most common malignancies in men worldwide. Current clinical screening ensures that most prostate cancers are diagnosed while still organ confined, but disease outcome is highly variable. Thus, a better understanding of the molecular features contributing to prostate cancer aggressiveness is being sought. For many cancers, aberrant genome-wide patterns of cytosine DNA methylation in CpG dinucleotides distinguish tumor from normal tissue and contribute to disease progression by altering the transcriptome. In prostate cancer, recent genomic studies identified cancer and high grade-specific differential DNA methylation in gene promoters, gene bodies, gene 3' ends and at distal regulatory elements. Using examples from developmental and disease systems, we will discuss how DNA methylation in each of these genomic contexts can contribute to transcriptome diversity by modulating transcription initiation, alternative transcription start site selection, alternative pre-mRNA splicing and alternative polyadenylation. Alternative transcripts from the same gene often exhibit altered protein-coding potential, translatability, stability and/or localization. All of these can have functional consequences in cells. In future work, it will be important to determine if DNA methylation abnormalities in prostate cancer modify the transcriptome through some or all of these mechanisms and if these DNA methylation-mediated transcriptome alterations impact prostate tumorigenesis and aggressiveness.
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Affiliation(s)
- Thomas J Sweet
- Genomic Medicine InstituteLerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Angela H Ting
- Genomic Medicine InstituteLerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
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99
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Incorporating Functional Annotations for Fine-Mapping Causal Variants in a Bayesian Framework Using Summary Statistics. Genetics 2016; 204:933-958. [PMID: 27655946 DOI: 10.1534/genetics.116.188953] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 09/07/2016] [Indexed: 12/21/2022] Open
Abstract
Functional annotations have been shown to improve both the discovery power and fine-mapping accuracy in genome-wide association studies. However, the optimal strategy to incorporate the large number of existing annotations is still not clear. In this study, we propose a Bayesian framework to incorporate functional annotations in a systematic manner. We compute the maximum a posteriori solution and use cross validation to find the optimal penalty parameters. By extending our previous fine-mapping method CAVIARBF into this framework, we require only summary statistics as input. We also derived an exact calculation of Bayes factors using summary statistics for quantitative traits, which is necessary when a large proportion of trait variance is explained by the variants of interest, such as in fine mapping expression quantitative trait loci (eQTL). We compared the proposed method with PAINTOR using different strategies to combine annotations. Simulation results show that the proposed method achieves the best accuracy in identifying causal variants among the different strategies and methods compared. We also find that for annotations with moderate effects from a large annotation pool, screening annotations individually and then combining the top annotations can produce overly optimistic results. We applied these methods on two real data sets: a meta-analysis result of lipid traits and a cis-eQTL study of normal prostate tissues. For the eQTL data, incorporating annotations significantly increased the number of potential causal variants with high probabilities.
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100
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Abstract
SUMMARYEpigenetic changes are present in all human cancers and are now known to cooperate with genetic alterations to drive the cancer phenotype. These changes involve DNA methylation, histone modifiers and readers, chromatin remodelers, microRNAs, and other components of chromatin. Cancer genetics and epigenetics are inextricably linked in generating the malignant phenotype; epigenetic changes can cause mutations in genes, and, conversely, mutations are frequently observed in genes that modify the epigenome. Epigenetic therapies, in which the goal is to reverse these changes, are now one standard of care for a preleukemic disorder and form of lymphoma. The application of epigenetic therapies in the treatment of solid tumors is also emerging as a viable therapeutic route.
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Affiliation(s)
- Stephen B Baylin
- Cancer Biology Program, Johns Hopkins University, School of Medicine, Baltimore, Maryland 21287
| | - Peter A Jones
- Van Andel Research Institute, Grand Rapids, Michigan 49503
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