101
|
Oxidative stress induces persistent telomeric DNA damage responsible for nuclear morphology change in mammalian cells. PLoS One 2014; 9:e110963. [PMID: 25354277 PMCID: PMC4212976 DOI: 10.1371/journal.pone.0110963] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 09/22/2014] [Indexed: 02/07/2023] Open
Abstract
One main function of telomeres is to maintain chromosome and genome stability. The rate of telomere shortening can be accelerated significantly by chemical and physical environmental agents. Reactive oxygen species are a source of oxidative stress and can produce modified bases (mainly 8-oxoG) and single strand breaks anywhere in the genome. The high incidence of guanine residues in telomeric DNA sequences makes the telomere a preferred target for oxidative damage. Our aim in this work is to evaluate whether chromosome instability induced by oxidative stress is related specifically to telomeric damage. We treated human primary fibroblasts (MRC-5) in vitro with hydrogen peroxide (100 and 200 µM) for 1 hr and collected data at several time points. To evaluate the persistence of oxidative stress-induced DNA damage up to 24 hrs after treatment, we analysed telomeric and genomic oxidative damage by qPCR and a modified comet assay, respectively. The results demonstrate that the genomic damage is completely repaired, while the telomeric oxidative damage persists. The analysis of telomere length reveals a significant telomere shortening 48 hrs after treatment, leading us to hypothesise that residual telomere damage could be responsible for the telomere shortening observed. Considering the influence of telomere length modulation on genomic stability, we quantified abnormal nuclear morphologies (Nucleoplasmic Bridges, Nuclear Buds and Micronuclei) and observed an increase of chromosome instability in the same time frame as telomere shortening. At subsequent times (72 and 96 hrs), we observed a restoration of telomere length and a reduction of chromosome instability, leaving us to conjecture a correlation between telomere shortening/dysfunction and chromosome instability. We can conclude that oxidative base damage leads to abnormal nuclear morphologies and that telomere dysfunction is an important contributor to this effect.
Collapse
|
102
|
Wong MS, Wright WE, Shay JW. Alternative splicing regulation of telomerase: a new paradigm? Trends Genet 2014; 30:430-8. [PMID: 25172021 DOI: 10.1016/j.tig.2014.07.006] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 07/30/2014] [Accepted: 07/31/2014] [Indexed: 01/01/2023]
Abstract
Alternative splicing affects approximately 95% of eukaryotic genes, greatly expanding the coding capacity of complex genomes. Although our understanding of alternative splicing has increased rapidly, current knowledge of splicing regulation has largely been derived from studies of highly expressed mRNAs. Telomerase is a key example of a protein that is alternatively spliced, but it is expressed at very low levels and although it is known that misregulation of telomerase splicing is a hallmark of nearly all cancers, the details of this process are unclear. Here we review work showing that hTERT expression is in part regulated by atypical alternative splicing, perhaps due to its exceptionally low expression level. We propose that these differential regulatory mechanisms may be widely applicable to other genes and may provide new opportunities for the development of cancer therapeutics.
Collapse
Affiliation(s)
- Mandy S Wong
- Department of Cell Biology, UT Southwestern Medical Center, Dallas, TX 75390-9039, USA
| | - Woodring E Wright
- Department of Cell Biology, UT Southwestern Medical Center, Dallas, TX 75390-9039, USA
| | - Jerry W Shay
- Department of Cell Biology, UT Southwestern Medical Center, Dallas, TX 75390-9039, USA; Center for Excellence in Genomics Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia.
| |
Collapse
|
103
|
Maya-Mendoza A, Merchut-Maya JM, Bartkova J, Bartek J, Streuli CH, Jackson DA. Immortalised breast epithelia survive prolonged DNA replication stress and return to cycle from a senescent-like state. Cell Death Dis 2014; 5:e1351. [PMID: 25058425 PMCID: PMC4123104 DOI: 10.1038/cddis.2014.315] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 06/09/2014] [Accepted: 06/11/2014] [Indexed: 12/20/2022]
Abstract
Mammalian cells have mechanisms to counteract the effects of metabolic and exogenous stresses, many of that would be mutagenic if ignored. Damage arising during DNA replication is a major source of mutagenesis. The extent of damage dictates whether cells undergo transient cell cycle arrest and damage repair, senescence or apoptosis. Existing dogma defines these alternative fates as distinct choices. Here we show that immortalised breast epithelial cells are able to survive prolonged S phase arrest and subsequently re-enter cycle after many days of being in an arrested, senescence-like state. Prolonged cell cycle inhibition in fibroblasts induced DNA damage response and cell death. However, in immortalised breast epithelia, efficient S phase arrest minimised chromosome damage and protected sufficient chromatin-bound replication licensing complexes to allow cell cycle re-entry. We propose that our observation could have implications for the design of drug therapies for breast cancer.
Collapse
Affiliation(s)
- A Maya-Mendoza
- 1] Faculty of Life Sciences and Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Oxford Road, Manchester M13 9PT, UK [2] Genome Integrity Unit, Danish Cancer Society Research Centre, Copenhagen, Denmark
| | - J M Merchut-Maya
- Genome Integrity Unit, Danish Cancer Society Research Centre, Copenhagen, Denmark
| | - J Bartkova
- Genome Integrity Unit, Danish Cancer Society Research Centre, Copenhagen, Denmark
| | - J Bartek
- 1] Genome Integrity Unit, Danish Cancer Society Research Centre, Copenhagen, Denmark [2] Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, CZ-779 00 Olomouc, Czech Republic
| | - C H Streuli
- Faculty of Life Sciences and Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| | - D A Jackson
- Faculty of Life Sciences and Wellcome Trust Centre for Cell-Matrix Research, University of Manchester, Oxford Road, Manchester M13 9PT, UK
| |
Collapse
|
104
|
Pooley KA, McGuffog L, Barrowdale D, Frost D, Ellis SD, Fineberg E, Platte R, Izatt L, Adlard J, Bardwell J, Brewer C, Cole T, Cook J, Davidson R, Donaldson A, Dorkins H, Douglas F, Eason J, Houghton C, Kennedy MJ, McCann E, Miedzybrodzka Z, Murray A, Porteous ME, Rogers MT, Side LE, Tischkowitz M, Walker L, Hodgson S, Eccles DM, Morrison PJ, Evans DG, Eeles RA, Antoniou AC, Easton DF, Dunning AM. Lymphocyte telomere length is long in BRCA1 and BRCA2 mutation carriers regardless of cancer-affected status. Cancer Epidemiol Biomarkers Prev 2014; 23:1018-24. [PMID: 24642354 PMCID: PMC4266102 DOI: 10.1158/1055-9965.epi-13-0635-t] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Telomere length has been linked to risk of common diseases, including cancer, and has previously been proposed as a biomarker for cancer risk. Germline BRCA1 and BRCA2 mutations predispose to breast, ovarian, and other cancer types. METHODS We investigated telomere length in BRCA mutation carriers and their non-carrier relatives and further examined whether telomere length is a modifier of cancer risk in mutation carriers. We measured mean telomere length in DNA extracted from whole blood using high-throughput quantitative PCR. Participants were from the EMBRACE study in United Kingdom and Eire (n = 4,822) and comprised BRCA1 (n = 1,628) and BRCA2 (n = 1,506) mutation carriers and their non-carrier relatives (n = 1,688). RESULTS We find no significant evidence that mean telomere length is associated with breast or ovarian cancer risk in BRCA mutation carriers. However, we find mutation carriers to have longer mean telomere length than their non-carrier relatives (all carriers vs. non-carriers, Ptrend = 0.0018), particularly in families with BRCA2 mutations (BRCA2 mutation carriers vs. all non-carriers, Ptrend = 0.0016). CONCLUSIONS Our findings lend little support to the hypothesis that short mean telomere length predisposes to cancer. Conversely, our main and unexpected finding is that BRCA mutation carriers (regardless of cancer status) have longer telomeres than their non-mutation carrier, non-cancer-affected relatives. The longer telomere length in BRCA2 mutation carriers is consistent with its role in DNA damage response. Overall, it seems that increased telomere length may be a consequence of these mutations, but is not itself directly related to the increased cancer risk in carriers. IMPACT The finding that mutation carriers have longer mean telomere lengths than their non-carrier relatives is unexpected but biologically plausible and could open up new lines of research into the functions of the BRCA proteins. To our knowledge, this is the largest study of telomere length in BRCA mutation carriers and their relatives. The null cancer-risk association supports recent large prospective studies of breast and ovarian cancer and indicates that mean telomere length would not be a useful biomarker in these cancers. Cancer Epidemiol Biomarkers Prev; 23(6); 1018-24. ©2014 AACR.
Collapse
Affiliation(s)
- Karen A Pooley
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Lesley McGuffog
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Daniel Barrowdale
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Debra Frost
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Steve D Ellis
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Elena Fineberg
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Radka Platte
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Louise Izatt
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Julian Adlard
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Julian Bardwell
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Carole Brewer
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Trevor Cole
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Jackie Cook
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Rosemarie Davidson
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Alan Donaldson
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Huw Dorkins
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Fiona Douglas
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Jacqueline Eason
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Catherine Houghton
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - M John Kennedy
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Emma McCann
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Zosia Miedzybrodzka
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Alex Murray
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Mary E Porteous
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Mark T Rogers
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Lucy E Side
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Marc Tischkowitz
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Lisa Walker
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Shirley Hodgson
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Diana M Eccles
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Patrick J Morrison
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - D Gareth Evans
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Rosalind A Eeles
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Antonis C Antoniou
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Douglas F Easton
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| | - Alison M Dunning
- Authors' Affiliations: Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care; Centre for Cancer Genetic Epidemiology, Department of Oncology, Strangeways Research Laboratory, University of Cambridge; Department of Epigenetics, Babraham Institute, Babraham Research Campus; Department of Medical Genetics, University of Cambridge, Cambridge; South East Thames Regional Genetics Service, Guy's Hospital; North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Trust; Clinical Genetics Department, St. Georges Hospital, University of London, London; Yorkshire Regional Genetics Service, Leeds; Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust; Department of Clinical Genetics, Royal Devon & Exeter Hospital, Exeter; West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham;Sheffield Clinical Genetics Service, Sheffield Children's Hospital, Sheffield; Ferguson-Smith Centre for Clinical Genetics, Yorkhill Hospitals, Glasgow; South West Regional Genetics Service, Bristol; North West Thames Regional Genetics Service, Kennedy-Galton Centre, Harrow; Institute of Human Genetics, Centre for Life, Newcastle Upon Tyne Hospitals NHS Trust, Newcastle upon Tyne; Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust; Cheshire & Merseyside Clinical Genetics Service, Liverpool Women's NHS Foundation Trust, Liverpool; All Wales Medical Genetics Service, Glan Clwyd Hospital, Rhyl; North of Scotland Regional Genetics Service, NHS Grampian & University of Aberdeen, Foresterhill, Aberdeen; All Wales Medical Genetics Services, Singleton Hospital, Swansea; South East of Scotland Regional Genetics Service, Western General Hospital, Edinburgh; All Wales Medical Genetics Services, University Hospital of Wales, Cardiff; Oxford Regional Genetics Service, Churchill Hospital, Oxford; Wessex Clinical Genetics Service, Princess A
| |
Collapse
|
105
|
Zheng YL, Zhang F, Sun B, Du J, Sun C, Yuan J, Wang Y, Tao L, Kota K, Liu X, Schlegel R, Yang Q. Telomerase enzymatic component hTERT shortens long telomeres in human cells. Cell Cycle 2014; 13:1765-76. [PMID: 24721976 DOI: 10.4161/cc.28705] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Telomere lengths are tightly regulated within a narrow range in normal human cells. Previous studies have extensively focused on how short telomeres are extended and have demonstrated that telomerase plays a central role in elongating short telomeres. However, much about the molecular mechanisms of regulating excessively long telomeres is unknown. In this report, we demonstrated that the telomerase enzymatic component, hTERT, plays a dual role in the regulation of telomere length. It shortens excessively long telomeres and elongates short telomeres simultaneously in one cell, maintaining the optimal telomere length at each chromosomal end for efficient protection. This novel hTERT-mediated telomere-shortening mechanism not only exists in cancer cells, but also in primary human cells. The hTERT-mediated telomere shortening requires hTERT's enzymatic activity, but the telomerase RNA component, hTR, is not involved in that process. We found that expression of hTERT increases telomeric circular DNA formation, suggesting that telomere homologous recombination is involved in the telomere-shortening process. We further demonstrated that shelterin protein TPP1 interacts with hTERT and recruits hTERT onto the telomeres, suggesting that TPP1 might be involved in regulation of telomere shortening. This study reveals a novel function of hTERT in telomere length regulation and adds a new element to the current molecular model of telomere length maintenance.
Collapse
Affiliation(s)
- Yun-Ling Zheng
- Cancer Prevention and Control; Lombardi Comprehensive Cancer Center; Georgetown University Medical Center; Washington, DC USA
| | - Fan Zhang
- Cancer Biology Division; Washington University School of Medicine; Saint Louis, MO USA
| | - Bing Sun
- Cancer Prevention and Control; Lombardi Comprehensive Cancer Center; Georgetown University Medical Center; Washington, DC USA
| | - Juan Du
- Cancer Biology Division; Washington University School of Medicine; Saint Louis, MO USA
| | - Chongkui Sun
- Cancer Biology Division; Washington University School of Medicine; Saint Louis, MO USA
| | - Jie Yuan
- Medical College; Jinan University; Guangzhou, China
| | - Ying Wang
- Cancer Prevention and Control; Lombardi Comprehensive Cancer Center; Georgetown University Medical Center; Washington, DC USA
| | - Lian Tao
- Cancer Prevention and Control; Lombardi Comprehensive Cancer Center; Georgetown University Medical Center; Washington, DC USA
| | - Krishna Kota
- Cancer Prevention and Control; Lombardi Comprehensive Cancer Center; Georgetown University Medical Center; Washington, DC USA
| | - Xuefeng Liu
- Molecular Oncology Programs; Lombardi Comprehensive Cancer Center; Georgetown University Medical Center; Washington, DC USA
| | - Richard Schlegel
- Molecular Oncology Programs; Lombardi Comprehensive Cancer Center; Georgetown University Medical Center; Washington, DC USA
| | - Qin Yang
- Cancer Biology Division; Washington University School of Medicine; Saint Louis, MO USA
| |
Collapse
|
106
|
Meeker A, Heaphy C. Gastroenteropancreatic endocrine tumors. Mol Cell Endocrinol 2014; 386:101-20. [PMID: 23906538 DOI: 10.1016/j.mce.2013.07.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 07/19/2013] [Accepted: 07/22/2013] [Indexed: 02/06/2023]
Abstract
Gastroenteropancreatic endocrine tumors (GEP-NETs) are relatively uncommon; comprising approximately 0.5% of all human cancers. Although they often exhibit relatively indolent clinical courses, GEP-NETs have the potential for lethal progression. Due to their scarcity and various technical challenges, GEP-NETs have been understudied. As a consequence, we have few diagnostic, prognostic and predictive biomarkers for these tumors. Early detection and surgical removal is currently the only reliable curative treatment for GEP-NET patients; many of whom, unfortunately, present with advanced disease. Here, we review the genetics and epigenetics of GEP-NETs. The last few years have witnessed unprecedented technological advances in these fields, and their application to GEP-NETS has already led to important new information on the molecular abnormalities underlying them. As outlined here, we expect that "omics" studies will provide us with new diagnostic and prognostic biomarkers, inform the development of improved pre-clinical models, and identify novel therapeutic targets for GEP-NET patients.
Collapse
Affiliation(s)
- Alan Meeker
- The Johns Hopkins University School of Medicine, Department of Pathology, Bond Street Research Annex Bldg., Room B300, 411 North Caroline Street, Baltimore, MD 21231, United States.
| | - Christopher Heaphy
- The Johns Hopkins University School of Medicine, Department of Pathology, Bond Street Research Annex Bldg., Room B300, 411 North Caroline Street, Baltimore, MD 21231, United States
| |
Collapse
|
107
|
de Araújo AL, Silva LCR, Fernandes JR, Benard G. Preventing or reversing immunosenescence: can exercise be an immunotherapy? Immunotherapy 2014; 5:879-93. [PMID: 23902557 DOI: 10.2217/imt.13.77] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
There is now a strong body of evidence demonstrating that aging is accompanied by severe alterations in the immune system, a process known as immunosenescence. Among these changes are alterations in T-cell subpopulation size, cytokine secretion pattern, cell replicative capacity and antibody production, all of which culminate in a proinflammatory state called 'inflammaging' and a diminished capacity to respond to new antigens. These alterations are closely related to the increased mortality and morbidity rates observed in this population. However, the role of exercise on the prevention or treatment of immunosenescence is virtually unknown. Data gathered from the literature regarding the effects of physical activity on immune system aging are still limited and conflicting, with existing reports either advocating benefits or asserting a lack of evidence. Exercise as part of a healthy lifestyle has already been shown to provide long-term benefits with regard to cardiovascular, cognitive, psychosocial and other aspects of the elderly. If positive effects are also observed for immunosenescence, exercise could be a highly cost-effective measure to improve human quality of life compared with other strategies currently being pursued.
Collapse
Affiliation(s)
- Adriana L de Araújo
- Laboratory of Dermatology & Immunodeficiencies, Dermatology Division, Clinics Hospital, São Paulo, Brazil
| | | | | | | |
Collapse
|
108
|
Puglisi R, Pozzi A, Vanni R, Balduzzi D, Lagutina I, Colleoni S, Lazzari G, Galli C, Bongioni G, Galli A. Assessment of telomere length during post-natal period in offspring produced by a bull and its fibroblast derived clone. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2014. [DOI: 10.1016/s2305-0500(13)60176-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
109
|
Haghighi MM, Aghagolzadeh P, Zadeh SM, Molaei M, Zali MR, Radpour R. Telomere shortening: a biological marker of sporadic colorectal cancer with normal expression of p53 and mismatch repair proteins. Genet Test Mol Biomarkers 2014; 18:236-44. [PMID: 24495131 DOI: 10.1089/gtmb.2013.0436] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Uncontrolled growth of cells, a main criterion of cancer, is merged with pathologic telomere length alteration. Thereby, measurement of telomere length could provide important information on cell proliferation and senescence in cancer tissues. Telomere shortening and its potential correlation with clinicopathological predictive markers in sporadic colorectal cancer (CRC) with normal expression of mismatch repair (MMR) proteins (including Mlh1, Msh2, Pms2, and Msh6) and normal p53 expression was completely explored. Relative telomere length (RTL) was quantitatively measured in a cohort of 164 samples (68 patients with sporadic CRC and 96 healthy unrelated controls). Our results demonstrated a significant shortening of RTL in the tumor-derived tissue of patients compared with the control group (p<0.001). Interestingly, significant telomere shortening was observed in tumors from an ascending and sigmoid colon in comparison with tumors located in a descending colon. Additionally, the telomere length was significantly shorter in those with lymph node metastasis (p<0.05). The results suggest that pathological telomere shortening, leading to genome instability and lymphatic transformation, could serve as a potential sensitive detection and also as a classification marker for facilitating diagnosis and management of CRC.
Collapse
Affiliation(s)
- Mahdi Montazer Haghighi
- 1 Department of Biology, Science Faculty, Islamic Azad University , East Tehran Branch, Tehran, Iran
| | | | | | | | | | | |
Collapse
|
110
|
The correlation between peripheral leukocyte telomere length and indicators of cardiovascular aging. Heart Lung Circ 2014; 23:883-90. [PMID: 24881030 DOI: 10.1016/j.hlc.2013.12.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2013] [Revised: 12/02/2013] [Accepted: 12/19/2013] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To investigate the relationship between telomere length in peripheral blood white cells and cardiovascular function in a healthy, aging Han Chinese population. METHODS In 2012, peripheral blood leukocytes were obtained from 139 healthy individuals in Beijing, China, and telomere restriction fragment (TRF) length was assayed using a digoxigenin-labeled hybridization probe in Southern blot assays. Indicators of cardiovascular function were also evaluated, including electrocardiograms (ECG), (RR, P, PR, QRS, ST and T intervals); blood pressure (BP), (SBP, DBP, PP, PPI); cardiovascular ultrasound (left ventricular ejection fraction, LVEF); mitral early and late diastolic peak flow velocity (MVE and MVA); and lipid indices (TC, TG, HDL, LDL, LCI). The relationships of these cardiovascular indictors to telomere length were evaluated. RESULTS No correlations were found between telomere length and ECG, BP or lipid indices even after adjustment for age. Correlations were found between TFR length and some cardiovascular ultrasound indictors (D, MVEA, MVEDT, MVES, MVEL, MVEI, IMT), but these were not seen after adjusting for age. CONCLUSIONS We did not find that leukocyte TFR length was associated with cardiovascular ultrasound indictors, ECG, BP, or lipid indices in this population of healthy Han Chinese individuals. Telomere length may serve as a genetic factor in biological aging.
Collapse
|
111
|
Shim G, Ricoul M, Hempel WM, Azzam EI, Sabatier L. Crosstalk between telomere maintenance and radiation effects: A key player in the process of radiation-induced carcinogenesis. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2014; 760:S1383-5742(14)00002-7. [PMID: 24486376 PMCID: PMC4119099 DOI: 10.1016/j.mrrev.2014.01.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 01/14/2014] [Accepted: 01/22/2014] [Indexed: 02/06/2023]
Abstract
It is well established that ionizing radiation induces chromosomal damage, both following direct radiation exposure and via non-targeted (bystander) effects, activating DNA damage repair pathways, of which the proteins are closely linked to telomeric proteins and telomere maintenance. Long-term propagation of this radiation-induced chromosomal damage during cell proliferation results in chromosomal instability. Many studies have shown the link between radiation exposure and radiation-induced changes in oxidative stress and DNA damage repair in both targeted and non-targeted cells. However, the effect of these factors on telomeres, long established as guardians of the genome, still remains to be clarified. In this review, we will focus on what is known about how telomeres are affected by exposure to low- and high-LET ionizing radiation and during proliferation, and will discuss how telomeres may be a key player in the process of radiation-induced carcinogenesis.
Collapse
|
112
|
Telomerase inhibitor Imetelstat (GRN163L) limits the lifespan of human pancreatic cancer cells. PLoS One 2014; 9:e85155. [PMID: 24409321 PMCID: PMC3883701 DOI: 10.1371/journal.pone.0085155] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 11/23/2013] [Indexed: 12/25/2022] Open
Abstract
Telomerase is required for the unlimited lifespan of cancer cells. The vast majority of pancreatic adenocarcinomas overexpress telomerase activity and blocking telomerase could limit their lifespan. GRN163L (Imetelstat) is a lipid-conjugated N3'→P5' thio-phosphoramidate oligonucleotide that blocks the template region of telomerase. The aim of this study was to define the effects of long-term GRN163L exposure on the maintenance of telomeres and lifespan of pancreatic cancer cells. Telomere size, telomerase activity, and telomerase inhibition response to GRN163L were measured in a panel of 10 pancreatic cancer cell lines. The cell lines exhibited large differences in levels of telomerase activity (46-fold variation), but most lines had very short telomeres (2-3 kb in size). GRN163L inhibited telomerase in all 10 pancreatic cancer cell lines, with IC50 ranging from 50 nM to 200 nM. Continuous GRN163L exposure of CAPAN1 (IC50 = 75 nM) and CD18 cells (IC50 = 204 nM) resulted in an initial rapid shortening of the telomeres followed by the maintenance of extremely short but stable telomeres. Continuous exposure to the drug eventually led to crisis and to a complete loss of viability after 47 (CAPAN1) and 69 (CD18) doublings. Crisis In these cells was accompanied by activation of a DNA damage response (γ-H2AX) and evidence of both senescence (SA-β-galactosidase activity) and apoptosis (sub-G1 DNA content, PARP cleavage). Removal of the drug after long-term GRN163L exposure led to a reactivation of telomerase and re-elongation of telomeres in the third week of cultivation without GRN163L. These findings show that the lifespan of pancreatic cancer cells can be limited by continuous telomerase inhibition. These results should facilitate the design of future clinical trials of GRN163L in patients with pancreatic cancer.
Collapse
|
113
|
Maji B, Bhattacharya S. Advances in the molecular design of potential anticancer agents via targeting of human telomeric DNA. Chem Commun (Camb) 2014; 50:6422-38. [DOI: 10.1039/c4cc00611a] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Telomerase is an attractive drug target to develop new generation drugs against cancer.
Collapse
Affiliation(s)
- Basudeb Maji
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore-560012, India
| | - Santanu Bhattacharya
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore-560012, India
- Chemical Biology Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
| |
Collapse
|
114
|
Duan YT, Yao YF, Tang DJ, Thumar NJ, Teraiya SB, Makawana JA, Sang YL, Wang ZC, Tao XX, Jiang AQ, Zhu HL. Synthesis and biological evaluation of quinoline–imidazole hybrids as potent telomerase inhibitors: a promising class of antitumor agents. RSC Adv 2014. [DOI: 10.1039/c4ra01936a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
115
|
Triana-Martínez F, López-Diazguerrero NE, Maciel-Barón LA, Morales-Rosales SL, Galván-Arzate S, Fernandez-Perrino FJ, Zentella A, Pérez VI, Gomez-Quiroz LE, Königsberg M. Cell proliferation arrest and redox state status as part of different stages during senescence establishment in mouse fibroblasts. Biogerontology 2013; 15:165-76. [DOI: 10.1007/s10522-013-9488-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 12/07/2013] [Indexed: 10/25/2022]
|
116
|
Pooley KA, Bojesen SE, Weischer M, Nielsen SF, Thompson D, Amin Al Olama A, Michailidou K, Tyrer JP, Benlloch S, Brown J, Audley T, Luben R, Khaw KT, Neal DE, Hamdy FC, Donovan JL, Kote-Jarai Z, Baynes C, Shah M, Bolla MK, Wang Q, Dennis J, Dicks E, Yang R, Rudolph A, Schildkraut J, Chang-Claude J, Burwinkel B, Chenevix-Trench G, Pharoah PDP, Berchuck A, Eeles RA, Easton DF, Dunning AM, Nordestgaard BG. A genome-wide association scan (GWAS) for mean telomere length within the COGS project: identified loci show little association with hormone-related cancer risk. Hum Mol Genet 2013; 22:5056-64. [PMID: 23900074 PMCID: PMC3836481 DOI: 10.1093/hmg/ddt355] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 07/12/2013] [Accepted: 07/23/2013] [Indexed: 12/17/2022] Open
Abstract
Mean telomere length (TL) in blood cells is heritable and has been reported to be associated with risks of several diseases, including cancer. We conducted a meta-analysis of three GWAS for TL (total n=2240) and selected 1629 variants for replication via the "iCOGS" custom genotyping array. All ∼200 000 iCOGS variants were analysed with TL, and those displaying associations in healthy controls (n = 15 065) were further tested in breast cancer cases (n = 11 024). We found a novel TL association (Ptrend < 4 × 10(-10)) at 3p14.4 close to PXK and evidence (Ptrend < 7 × 10(-7)) for TL loci at 6p22.1 (ZNF311) and 20q11.2 (BCL2L1). We additionally confirmed (Ptrend < 5 × 10(-14)) the previously reported loci at 3q26.2 (TERC), 5p15.3 (TERT) and 10q24.3 (OBFC1) and found supportive evidence (Ptrend < 5 × 10(-4)) for the published loci at 2p16.2 (ACYP2), 4q32.2 (NAF1) and 20q13.3 (RTEL1). SNPs tagging these loci explain TL differences of up to 731 bp (corresponding to 18% of total TL in healthy individuals), however, they display little direct evidence for association with breast, ovarian or prostate cancer risks.
Collapse
Affiliation(s)
- Karen A. Pooley
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | - Stig E. Bojesen
- Copenhagen General Population Study and
- Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Maren Weischer
- Copenhagen General Population Study and
- Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Sune F. Nielsen
- Copenhagen General Population Study and
- Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Deborah Thompson
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | - Ali Amin Al Olama
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | - Kyriaki Michailidou
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | | | - Sara Benlloch
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | - Judith Brown
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | - Tina Audley
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | - Robert Luben
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - K-T Khaw
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - David E. Neal
- Surgical Oncology, Addenbrooke's Hospital, University of Cambridge, Box 279, Hills Road, Cambridge, UK
- Cancer Research UK Cambridge Research Institute, Li Ka Shing Centre, Cambridge, UK
| | - Freddie C. Hamdy
- Nuffield Department of Surgical Sciences and
- Faculty of Medical Science, John Radcliffe Hospital, University of Oxford, Oxford, UK
| | - Jenny L. Donovan
- School of Social and Community Medicine, University of Bristol, Canynge Hall, Bristol, UK
| | | | - Caroline Baynes
- Centre for Cancer Genetic Epidemiology, Department of Oncology and
| | - Mitul Shah
- Centre for Cancer Genetic Epidemiology, Department of Oncology and
| | - Manjeet K. Bolla
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | - Qin Wang
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | - Joe Dennis
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
| | - Ed Dicks
- Centre for Cancer Genetic Epidemiology, Department of Oncology and
| | | | - Anja Rudolph
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Joellen Schildkraut
- Department of Community and Family Medicine and
- Cancer Prevention, Detection and Control Research Program, Duke Cancer Institute, Durham, NC, USA
| | - Jenny Chang-Claude
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Barbara Burwinkel
- Molecular Epidemiology Group and
- Department of Obstetrics and Gynecology, University of Heidelberg, Heidelberg, Germany
| | | | - Paul D. P. Pharoah
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
- Centre for Cancer Genetic Epidemiology, Department of Oncology and
| | - Andrew Berchuck
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, USA
| | - Rosalind A. Eeles
- Oncogenetics Team, Institute of Cancer Research, Sutton, Surrey, UK
- Royal Marsden NHS Foundation Trust, Chelsea, London, UK
| | - Douglas F. Easton
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care
- Centre for Cancer Genetic Epidemiology, Department of Oncology and
| | | | - Børge G. Nordestgaard
- Copenhagen General Population Study and
- Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
117
|
Pal J, Gold JS, Munshi NC, Shammas MA. Biology of telomeres: importance in etiology of esophageal cancer and as therapeutic target. Transl Res 2013; 162:364-70. [PMID: 24090770 PMCID: PMC3834232 DOI: 10.1016/j.trsl.2013.09.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 09/05/2013] [Accepted: 09/06/2013] [Indexed: 11/17/2022]
Abstract
The purpose of this review is to highlight the importance of telomeres, the mechanisms implicated in their maintenance, and their role in the etiology as well as the treatment of human esophageal cancer. We will also discuss the role of telomeres in the maintenance and preservation of genomic integrity, the consequences of telomere dysfunction, and the various factors that may affect telomere health in esophageal tissue predisposing it to oncogenesis. There has been growing evidence that telomeres, which can be affected by various intrinsic and extrinsic factors, contribute to genomic instability, oncogenesis, as well as proliferation of cancer cells. Telomeres are the protective DNA-protein complexes at chromosome ends. Telomeric DNA undergoes progressive shortening with age leading to cellular senescence and/or apoptosis. If senescence/apoptosis is prevented as a consequence of specific genomic changes, continued proliferation leads to very short (ie, dysfunctional) telomeres that can potentially cause genomic instability, thus, increasing the risk for activation of telomere maintenance mechanisms and oncogenesis. Like many other cancers, esophageal cancer cells have short telomeres and elevated telomerase, the enzyme that maintains telomeres in most cancer cells. Homologous recombination, which is implicated in the alternate pathway of telomere elongation, is also elevated in Barrett's-associated esophageal adenocarcinoma. Evidence from our laboratory indicates that both telomerase and homologous recombination contribute to telomere maintenance, DNA repair, and the ongoing survival of esophageal cancer cells. This indicates that telomere maintenance mechanisms may potentially be targeted to make esophageal cancer cells static. The rate at which telomeres in healthy cells shorten is determined by a number of intrinsic and extrinsic factors, including those associated with lifestyle. Avoidance of factors that may directly or indirectly injure esophageal tissue including its telomeric and other genomic DNA can not only reduce the risk of development of esophageal cancer but may also have positive impact on overall health and lifespan.
Collapse
Affiliation(s)
- Jagannath Pal
- Harvard (Dana Farber) Cancer Institute, Boston, MA, USA
- VA Boston Healthcare System, Boston, MA, USA
| | - Jason S. Gold
- Harvard (Dana Farber) Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- Brigham and Women’s Hospital, Boston, MA, USA
- VA Boston Healthcare System, Boston, MA, USA
| | - Nikhil C. Munshi
- Harvard (Dana Farber) Cancer Institute, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
- VA Boston Healthcare System, Boston, MA, USA
| | - Masood A. Shammas
- Harvard (Dana Farber) Cancer Institute, Boston, MA, USA
- VA Boston Healthcare System, Boston, MA, USA
| |
Collapse
|
118
|
Fernandez-Garcia I, Marcos T, Muñoz-Barrutia A, Serrano D, Pio R, Montuenga LM, Ortiz-de-Solorzano C. Multiscale in situ analysis of the role of dyskerin in lung cancer cells. Integr Biol (Camb) 2013; 5:402-13. [PMID: 23233094 DOI: 10.1039/c2ib20219k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Dyskerin is one of the three subunits of the telomerase ribonucleoprotein (RNP) complex. Very little is known about the role of dyskerin in the biology of the telomeres in cancer cells. In this study, we use a quantitative, multiscale 3D image-based in situ method and several molecular techniques to show that dyskerin is overexpressed in lung cancer cell lines. Furthermore, we show that dyskerin expression correlates with telomere length both at the cell population level--cells with higher dyskerin expression have short telomeres--and at the single cell level--the shortest telomeres of the cell are spatially associated with areas of concentration of dyskerin proteins. Using this in vitro model, we also show that exogenous increase in dyskerin expression confers resistance to telomere shortening caused by a telomerase inactivating drug. Finally, we show that resistance is achieved by the recovery of telomerase activity associated with dyskerin. In summary, using a novel multiscale image-based in situ method, we show that, in lung cancer cell lines, dyskerin responds to continuous telomere attrition by increasing the telomerase RNP activity, which in turn provides resistance to telomere shortening.
Collapse
Affiliation(s)
- Ignacio Fernandez-Garcia
- Oncology Division, Center for Applied Medical Research, CIMA, University of Navarra, Avda. Pio XII 55, Pamplona 31008, Spain
| | | | | | | | | | | | | |
Collapse
|
119
|
Effros RB. Replicative senescence of T lymphocytes: Effect on immune function. Aging Clin Exp Res 2013. [DOI: 10.1007/bf03324366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
120
|
Ma SL, Lau ESS, Suen EWC, Lam LCW, Leung PC, Woo J, Tang NLS. Telomere length and cognitive function in southern Chinese community-dwelling male elders. Age Ageing 2013; 42:450-5. [PMID: 23519133 DOI: 10.1093/ageing/aft036] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND telomere attrition has been associated with an increased risk of different age-related diseases and is widely accepted as a marker of cellular ageing. On the other hand, it is well known that cognitive function declines with age. The telomere length may therefore act as a marker for the pathway associated with cognitive function. METHODS we examined telomere length and cognitive functions in a community-dwelling Chinese male population aged 65 years and above living in Hong Kong. The telomere length was measured by quantitative real-time PCR in 976 men. Cognitive function was assessed by Chinese (Cantonese) version of Mini-Mental State Exam and Community Screening Interview for Dementia. RESULTS our result showed there was a significant association between telomere length, delayed recall (P = 0.007) and category verbal fluency (P = 0.048). These associations remained significant after adjustment for age and education. Further analysis using a cut-off score for MMSE, three-item recall and word list generation tests suggested that the telomere length was positively correlated with performance in these areas (P = 0.015). CONCLUSION the findings support the association of telomere length and cognitive function and suggested that the telomere length may serve as a biological marker for cognitive decline.
Collapse
Affiliation(s)
- Suk Ling Ma
- Psychiatry, The Chinese University of Hong Kong, G/F, Multi-Centre, Tai Po Hospital Chuen On Road, Tai Po, NT Hong Kong SAR, The People's Republic of China.
| | | | | | | | | | | | | |
Collapse
|
121
|
Telomere shortening in Ph-negative chronic myeloproliferative neoplasms: A biological marker of polycythemia vera and myelofibrosis, regardless of hydroxycarbamide therapy. Exp Hematol 2013; 41:627-34. [DOI: 10.1016/j.exphem.2013.03.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 03/17/2013] [Accepted: 03/19/2013] [Indexed: 02/08/2023]
|
122
|
Yamada O, Kawauchi K. The role of the JAK-STAT pathway and related signal cascades in telomerase activation during the development of hematologic malignancies. JAKSTAT 2013; 2:e25256. [PMID: 24416646 PMCID: PMC3876434 DOI: 10.4161/jkst.25256] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 05/25/2013] [Accepted: 06/03/2013] [Indexed: 12/28/2022] Open
Abstract
Telomerase, comprising a reverse transcriptase protein (TERT) and an RNA template, plays a critical role during senescence and carcinogenesis; however, the mechanisms by which telomerase is regulated remain to be elucidated. Several signaling pathways are involved in the activation of TERT at multistep levels. The JAK-STAT pathway is indispensable for mediating signals through growth factor and cytokine receptors during the development of hematopoietic cells, and its activity is frequently upregulated in hematological malignancies. Here, we review the role of the JAK-STAT pathway and related signaling cascades in the regulation of telomerase in hematological malignancies.
Collapse
Affiliation(s)
- Osamu Yamada
- Medical Research Institute and Department of Hematology; Tokyo Women's Medical University; Tokyo, Japan
| | - Kiyotaka Kawauchi
- Department of Medicine; Tokyo Women's Medical University; Medical Center East; Tokyo, Japan ; Nishiogu Clinic; Tokyo, Japan
| |
Collapse
|
123
|
La Torre D, Conti A, Aguennouz MH, De Pasquale MG, Romeo S, Angileri FF, Cardali S, Tomasello C, Alafaci C, Germanò A. Telomere length modulation in human astroglial brain tumors. PLoS One 2013; 8:e64296. [PMID: 23691191 PMCID: PMC3653865 DOI: 10.1371/journal.pone.0064296] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Accepted: 04/11/2013] [Indexed: 11/23/2022] Open
Abstract
Background Telomeres alteration during carcinogenesis and tumor progression has been described in several cancer types. Telomeres length is stabilized by telomerase (h-TERT) and controlled by several proteins that protect telomere integrity, such as the Telomere Repeat-binding Factor (TRF) 1 and 2 and the tankyrase-poli-ADP-ribose polymerase (TANKs-PARP) complex. Objective To investigate telomere dysfunction in astroglial brain tumors we analyzed telomeres length, telomerase activity and the expression of a panel of genes controlling the length and structure of telomeres in tissue samples obtained in vivo from astroglial brain tumors with different grade of malignancy. Materials and Methods Eight Low Grade Astrocytomas (LGA), 11 Anaplastic Astrocytomas (AA) and 11 Glioblastoma Multiforme (GBM) samples were analyzed. Three samples of normal brain tissue (NBT) were used as controls. Telomeres length was assessed through Southern Blotting. Telomerase activity was evaluated by a telomere repeat amplification protocol (TRAP) assay. The expression levels of TRF1, TRF2, h-TERT and TANKs-PARP complex were determined through Immunoblotting and RT-PCR. Results LGA were featured by an up-regulation of TRF1 and 2 and by shorter telomeres. Conversely, AA and GBM were featured by a down-regulation of TRF1 and 2 and an up-regulation of both telomerase and TANKs-PARP complex. Conclusions In human astroglial brain tumours, up-regulation of TRF1 and TRF2 occurs in the early stages of carcinogenesis determining telomeres shortening and genomic instability. In a later stage, up-regulation of PARP-TANKs and telomerase activation may occur together with an ADP-ribosylation of TRF1, causing a reduced ability to bind telomeric DNA, telomeres elongation and tumor malignant progression.
Collapse
Affiliation(s)
- Domenico La Torre
- Department of Neurosciences, University of Messina School of Medicine, Messina, Italy.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
124
|
Mondello C, Chiodi I. Cellular immortalization and neoplastic transformation: Simultaneous, sequential or independent? Telomeres, telomerase or karyotypic variations? Cell Cycle 2013; 12:1804-5. [PMID: 23656775 DOI: 10.4161/cc.24940] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
|
125
|
Kheirollahi M, Mehrazin M, Kamalian N, Mohammadi-asl J, Mehdipour P. Telomerase activity in human brain tumors: astrocytoma and meningioma. Cell Mol Neurobiol 2013; 33:569-74. [PMID: 23512291 DOI: 10.1007/s10571-013-9923-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Accepted: 03/08/2013] [Indexed: 02/08/2023]
Abstract
Somatic cells do not have telomerase activity but immortalized cell lines and more than 85 % of the cancer cells show telomerase activation to prevent the telomere from progressive shortening. The activation of this enzyme has been found in a variety of human tumors and tumor-derived cell lines, but only few studies on telomerase activity in human brain tumors have been reported. Here, we evaluated telomerase activity in different grades of human astrocytoma and meningioma brain tumors. In this study, assay for telomerase activity performed on 50 eligible cases consisted of 26 meningioma, 24 astrocytoma according to the standard protocols. In the brain tissues, telomerase activity was positive in 39 (65 %) of 50 patients. One sample t test showed that the telomerase activity in meningioma and astrocytoma tumors was significantly positive entirely (P < 0.001). Also, grade I of meningioma and low grades of astrocytoma (grades I and II) significantly showed telomerase activity. According to our results, we suggest that activation of telomerase is an event that starts mostly at low grades of brain including meningioma and astrocytoma tumors.
Collapse
Affiliation(s)
- Majid Kheirollahi
- Pediatric Inherited Diseases Research Center, Genetics and Molecular Biology Department, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
| | | | | | | | | |
Collapse
|
126
|
Targeting homologous recombination and telomerase in Barrett's adenocarcinoma: impact on telomere maintenance, genomic instability and tumor growth. Oncogene 2013; 33:1495-505. [PMID: 23604115 PMCID: PMC3940666 DOI: 10.1038/onc.2013.103] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 02/02/2013] [Accepted: 02/04/2013] [Indexed: 12/15/2022]
Abstract
Homologous recombination (HR), a mechanism to accurately repair DNA in normal cells, is deregulated in cancer. Elevated/deregulated HR is implicated in genomic instability and telomere maintenance, which are critical lifelines of cancer cells. We have previously shown that HR activity is elevated and significantly contributes to genomic instability in BAC. The purpose of this study was to evaluate therapeutic potential of HR inhibition, alone and in combination with telomerase inhibition, in BAC. We demonstrate that telomerase inhibition in BAC cells increases HR activity, RAD51 expression, and association of RAD51 to telomeres. Suppression of HR leads to shorter telomeres as well as markedly reduced genomic instability in BAC cells over time. Combination of HR suppression (whether transgenic or chemical) with telomerase inhibition, causes a significant increase in telomere attrition and apoptotic death in all BAC cell lines tested, relative to either treatment alone. A subset of treated cells also stain positive for β-galactosidase, indicating senescence. The combined treatment is also associated with decline in S-phase and a strong G2/M arrest, indicating massive telomere attrition. In a subcutaneous tumor model, the combined treatment resulted in the smallest tumors, which were even smaller (P=0.001) than those resulted from either treatment alone. Even the tumors removed from these mice had significantly reduced telomeres and evidence of apoptosis. We therefore conclude that although telomeres are elongated by telomerase, elevated RAD51/HR assist in their maintenance/stabilization in BAC cells. Telomerase inhibitor prevents telomere elongation but induces RAD51/HR, which contribute to telomere maintenance/stabilization and prevention of apoptosis, reducing the efficacy of treatment. Combining HR inhibition with telomerase, makes telomeres more vulnerable to degradation and significantly increases/expedites their attrition, leading to apoptosis. We therefore demonstrate that a therapy, targeting HR and telomerase, has potential to prevent both the tumor growth and genomic evolution in BAC.
Collapse
|
127
|
Holder IT, Drescher M, Hartig JS. Structural characterization of quadruplex DNA with in-cell EPR approaches. Bioorg Med Chem 2013; 21:6156-61. [PMID: 23693068 DOI: 10.1016/j.bmc.2013.04.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Revised: 03/26/2013] [Accepted: 04/05/2013] [Indexed: 12/20/2022]
Abstract
Guanosine-rich DNA sequences have the potential to adopt four-stranded conformations termed quadruplexes. The chromosomes of higher organisms are capped by so-called telomeres that are composed of repeats of the sequence TTAGGG. Up to 200 nucleotides of the G-rich strand form an overhang that is suspected to fold into intramolecular G-quadruplexes. Since induction of quadruplexes at the telomeres results in anti-proliferative effects, the intracellular structure of G-quadruplexes is of high interest as an anti-cancer drug target. Here we give a perspective on the elucidation of DNA sequence folds by electron paramagnetic resonance (EPR) distance measurements. The technique complements X-ray crystallography and NMR spectroscopy, as it can be applied in noncrystalline states, is not intrinsically limited by the size of the bio-macromolecular complex, and is able to analyze flexible structures or coexisting DNA conformation.
Collapse
Affiliation(s)
- Isabelle T Holder
- Department of Chemistry and Konstanz Research School of Chemical Biology, University of Konstanz, 78467 Konstanz, Germany
| | | | | |
Collapse
|
128
|
Chiodi I, Belgiovine C, Zongaro S, Ricotti R, Horard B, Lossani A, Focher F, Gilson E, Giulotto E, Mondello C. Super-telomeres in transformed human fibroblasts. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:1885-93. [PMID: 23570868 DOI: 10.1016/j.bbamcr.2013.03.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 03/22/2013] [Accepted: 03/29/2013] [Indexed: 01/13/2023]
Abstract
Telomere length maintenance is critical for organisms' long-term survival and cancer cell proliferation. Telomeres are kept within species-specific length ranges by the interplay between telomerase activity and telomeric chromatin organization. In this paper, we exploited telomerase immortalized human fibroblasts (cen3tel) that gradually underwent neoplastic transformation during culture propagation to study telomere composition and length regulation during the transformation process. Just after telomerase catalytic subunit (hTERT) expression, cen3tel telomeres shortened despite the presence of telomerase activity. At a later stage and concomitantly with transformation, cells started elongating telomeres, which reached a mean length greater than 100kb in about 900 population doublings. Super-telomeres were stable and compatible with cell growth and tumorigenesis. Telomere extension was associated with increasing levels of telomerase activity that were linked to the deregulation of endogenous telomerase RNA (hTERC) and exogenous telomerase reverse transcriptase (hTERT) expression. Notably, the increase in hTERC levels paralleled the increase in telomerase activity, suggesting that this subunit plays a role in regulating enzyme activity. Telomeres ranging in length between 10 and more than 100kb were maintained in an extendible state although TRF1 and TRF2 binding increased with telomere length. Super-telomeres neither influenced subtelomeric region global methylation nor the expression of the subtelomeric gene FRG1, attesting the lack of a clear-cut relationship between telomere length, subtelomeric DNA methylation and expression in human cells. The cellular levels of the telomeric proteins hTERT, TRF1, TRF2 and Hsp90 rose with transformation and were independent of telomere length, pointing to a role of these proteins in tumorigenesis.
Collapse
|
129
|
Regulation of telomerase alternative splicing: a target for chemotherapy. Cell Rep 2013; 3:1028-35. [PMID: 23562158 DOI: 10.1016/j.celrep.2013.03.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 01/29/2013] [Accepted: 03/08/2013] [Indexed: 01/17/2023] Open
Abstract
Telomerase is present in human cancer cells but absent in most somatic tissues. The messenger RNA of human telomerase (hTERT) is alternatively spliced into mostly nonfunctional products. We sought to understand splicing so that we could decrease functional splice isoforms to reduce telomerase activity in order to complement direct enzyme inhibition. Unexpectedly, minigenes containing hTERT exons 5-10 flanked by 150-300 bp intronic sequences did not produce alternative splicing. A 1.1 kb region of 38 bp repeats ~2 kb from the exon 6/intron junction restored the exclusion of exons 7 and 8. An element within intron 8, also >1 kb from intron/exon junctions, modulated this effect. Transducing an oligonucleotide complementary to this second element increased nonfunctional hTERT messenger RNA from endogenous telomerase. These results demonstrate the potential of manipulating hTERT splicing for both chemotherapy and regenerative medicine and provide specific sequences deep within introns that regulate alternative splicing in mammalian cells by mechanisms other than the introduction of cryptic splice sites.
Collapse
|
130
|
Bojesen SE, Pooley KA, Johnatty SE, Beesley J, Michailidou K, Tyrer JP, Edwards SL, Pickett HA, Shen HC, Smart CE, Hillman KM, Mai PL, Lawrenson K, Stutz MD, Lu Y, Karevan R, Woods N, Johnston RL, French JD, Chen X, Weischer M, Nielsen SF, Maranian MJ, Ghoussaini M, Ahmed S, Baynes C, Bolla MK, Wang Q, Dennis J, McGuffog L, Barrowdale D, Lee A, Healey S, Lush M, Tessier DC, Vincent D, Bacot F, Vergote I, Lambrechts S, Despierre E, Risch HA, González-Neira A, Rossing MA, Pita G, Doherty JA, Álvarez N, Larson MC, Fridley BL, Schoof N, Chang-Claude J, Cicek MS, Peto J, Kalli KR, Broeks A, Armasu SM, Schmidt MK, Braaf LM, Winterhoff B, Nevanlinna H, Konecny GE, Lambrechts D, Rogmann L, Guénel P, Teoman A, Milne RL, Garcia JJ, Cox A, Shridhar V, Burwinkel B, Marme F, Hein R, Sawyer EJ, Haiman CA, Wang-Gohrke S, Andrulis IL, Moysich KB, Hopper JL, Odunsi K, Lindblom A, Giles GG, Brenner H, Simard J, Lurie G, Fasching PA, Carney ME, Radice P, Wilkens LR, Swerdlow A, Goodman MT, Brauch H, García-Closas M, Hillemanns P, Winqvist R, Dürst M, Devilee P, Runnebaum I, Jakubowska A, Lubinski J, Mannermaa A, Butzow R, Bogdanova NV, Dörk T, Pelttari LM, Zheng W, Leminen A, Anton-Culver H, Bunker CH, Kristensen V, Ness RB, Muir K, Edwards R, Meindl A, Heitz F, Matsuo K, du Bois A, Wu AH, Harter P, Teo SH, Schwaab I, Shu XO, Blot W, Hosono S, Kang D, Nakanishi T, Hartman M, Yatabe Y, Hamann U, Karlan BY, Sangrajrang S, Kjaer SK, Gaborieau V, Jensen A, Eccles D, Høgdall E, Shen CY, Brown J, Woo YL, Shah M, Azmi MAN, Luben R, Omar SZ, Czene K, Vierkant RA, Nordestgaard BG, Flyger H, Vachon C, Olson JE, Wang X, Levine DA, Rudolph A, Weber RP, Flesch-Janys D, Iversen E, Nickels S, Schildkraut JM, Silva IDS, Cramer DW, Gibson L, Terry KL, Fletcher O, Vitonis AF, van der Schoot CE, Poole EM, Hogervorst FBL, Tworoger SS, Liu J, Bandera EV, Li J, Olson SH, Humphreys K, Orlow I, Blomqvist C, Rodriguez-Rodriguez L, Aittomäki K, Salvesen HB, Muranen TA, Wik E, Brouwers B, Krakstad C, Wauters E, Halle MK, Wildiers H, Kiemeney LA, Mulot C, Aben KK, Laurent-Puig P, van Altena AM, Truong T, Massuger LFAG, Benitez J, Pejovic T, Perez JIA, Hoatlin M, Zamora MP, Cook LS, Balasubramanian SP, Kelemen LE, Schneeweiss A, Le ND, Sohn C, Brooks-Wilson A, Tomlinson I, Kerin MJ, Miller N, Cybulski C, Henderson BE, Menkiszak J, Schumacher F, Wentzensen N, Marchand LL, Yang HP, Mulligan AM, Glendon G, Engelholm SA, Knight JA, Høgdall CK, Apicella C, Gore M, Tsimiklis H, Song H, Southey MC, Jager A, van den Ouweland AMW, Brown R, Martens JWM, Flanagan JM, Kriege M, Paul J, Margolin S, Siddiqui N, Severi G, Whittemore AS, Baglietto L, McGuire V, Stegmaier C, Sieh W, Müller H, Arndt V, Labrèche F, Gao YT, Goldberg MS, Yang G, Dumont M, McLaughlin JR, Hartmann A, Ekici AB, Beckmann MW, Phelan CM, Lux MP, Permuth-Wey J, Peissel B, Sellers TA, Ficarazzi F, Barile M, Ziogas A, Ashworth A, Gentry-Maharaj A, Jones M, Ramus SJ, Orr N, Menon U, Pearce CL, Brüning T, Pike MC, Ko YD, Lissowska J, Figueroa J, Kupryjanczyk J, Chanock SJ, Dansonka-Mieszkowska A, Jukkola-Vuorinen A, Rzepecka IK, Pylkäs K, Bidzinski M, Kauppila S, Hollestelle A, Seynaeve C, Tollenaar RAEM, Durda K, Jaworska K, Hartikainen JM, Kosma VM, Kataja V, Antonenkova NN, Long J, Shrubsole M, Deming-Halverson S, Lophatananon A, Siriwanarangsan P, Stewart-Brown S, Ditsch N, Lichtner P, Schmutzler RK, Ito H, Iwata H, Tajima K, Tseng CC, Stram DO, van den Berg D, Yip CH, Ikram MK, Teh YC, Cai H, Lu W, Signorello LB, Cai Q, Noh DY, Yoo KY, Miao H, Iau PTC, Teo YY, McKay J, Shapiro C, Ademuyiwa F, Fountzilas G, Hsiung CN, Yu JC, Hou MF, Healey CS, Luccarini C, Peock S, Stoppa-Lyonnet D, Peterlongo P, Rebbeck TR, Piedmonte M, Singer CF, Friedman E, Thomassen M, Offit K, Hansen TVO, Neuhausen SL, Szabo CI, Blanco I, Garber J, Narod SA, Weitzel JN, Montagna M, Olah E, Godwin AK, Yannoukakos D, Goldgar DE, Caldes T, Imyanitov EN, Tihomirova L, Arun BK, Campbell I, Mensenkamp AR, van Asperen CJ, van Roozendaal KEP, Meijers-Heijboer H, Collée JM, Oosterwijk JC, Hooning MJ, Rookus MA, van der Luijt RB, van Os TAM, Evans DG, Frost D, Fineberg E, Barwell J, Walker L, Kennedy MJ, Platte R, Davidson R, Ellis SD, Cole T, Paillerets BBD, Buecher B, Damiola F, Faivre L, Frenay M, Sinilnikova OM, Caron O, Giraud S, Mazoyer S, Bonadona V, Caux-Moncoutier V, Toloczko-Grabarek A, Gronwald J, Byrski T, Spurdle AB, Bonanni B, Zaffaroni D, Giannini G, Bernard L, Dolcetti R, Manoukian S, Arnold N, Engel C, Deissler H, Rhiem K, Niederacher D, Plendl H, Sutter C, Wappenschmidt B, Borg Å, Melin B, Rantala J, Soller M, Nathanson KL, Domchek SM, Rodriguez GC, Salani R, Kaulich DG, Tea MK, Paluch SS, Laitman Y, Skytte AB, Kruse TA, Jensen UB, Robson M, Gerdes AM, Ejlertsen B, Foretova L, Savage SA, Lester J, Soucy P, Kuchenbaecker KB, Olswold C, Cunningham JM, Slager S, Pankratz VS, Dicks E, Lakhani SR, Couch FJ, Hall P, Monteiro ANA, Gayther SA, Pharoah PDP, Reddel RR, Goode EL, Greene MH, Easton DF, Berchuck A, Antoniou AC, Chenevix-Trench G, Dunning AM. Multiple independent variants at the TERT locus are associated with telomere length and risks of breast and ovarian cancer. Nat Genet 2013; 45:371-84, 384e1-2. [PMID: 23535731 PMCID: PMC3670748 DOI: 10.1038/ng.2566] [Citation(s) in RCA: 435] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 01/31/2013] [Indexed: 12/13/2022]
Abstract
TERT-locus SNPs and leukocyte telomere measures are reportedly associated with risks of multiple cancers. Using the Illumina custom genotyping array iCOGs, we analyzed ∼480 SNPs at the TERT locus in breast (n = 103,991), ovarian (n = 39,774) and BRCA1 mutation carrier (n = 11,705) cancer cases and controls. Leukocyte telomere measurements were also available for 53,724 participants. Most associations cluster into three independent peaks. The minor allele at the peak 1 SNP rs2736108 associates with longer telomeres (P = 5.8 × 10(-7)), lower risks for estrogen receptor (ER)-negative (P = 1.0 × 10(-8)) and BRCA1 mutation carrier (P = 1.1 × 10(-5)) breast cancers and altered promoter assay signal. The minor allele at the peak 2 SNP rs7705526 associates with longer telomeres (P = 2.3 × 10(-14)), higher risk of low-malignant-potential ovarian cancer (P = 1.3 × 10(-15)) and greater promoter activity. The minor alleles at the peak 3 SNPs rs10069690 and rs2242652 increase ER-negative (P = 1.2 × 10(-12)) and BRCA1 mutation carrier (P = 1.6 × 10(-14)) breast and invasive ovarian (P = 1.3 × 10(-11)) cancer risks but not via altered telomere length. The cancer risk alleles of rs2242652 and rs10069690, respectively, increase silencing and generate a truncated TERT splice variant.
Collapse
Affiliation(s)
- Stig E Bojesen
- Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Karen A Pooley
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Sharon E Johnatty
- Department of Genetics, Queensland Institute of Medical Research, Brisbane, Australia
| | - Jonathan Beesley
- Department of Genetics, Queensland Institute of Medical Research, Brisbane, Australia
| | - Kyriaki Michailidou
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Jonathan P Tyrer
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Stacey L Edwards
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Hilda A Pickett
- Cancer Research Unit, Children's Medical Research Institute, Westmead, NSW, Australia
- Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Howard C Shen
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Chanel E Smart
- University of Queensland, UQ Centre for Clinical Research (UQCCR) Royal Brisbane and Women's Hospital, Herston, QLD, Australia
| | - Kristine M Hillman
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Phuong L Mai
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Kate Lawrenson
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Michael D Stutz
- Cancer Research Unit, Children's Medical Research Institute, Westmead, NSW, Australia
- Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Yi Lu
- Department of Genetics, Queensland Institute of Medical Research, Brisbane, Australia
| | - Rod Karevan
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Nicholas Woods
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Rebecca L Johnston
- University of Queensland, UQ Centre for Clinical Research (UQCCR) Royal Brisbane and Women's Hospital, Herston, QLD, Australia
| | - Juliet D French
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Australia
| | - Xiaoqing Chen
- Department of Genetics, Queensland Institute of Medical Research, Brisbane, Australia
| | - Maren Weischer
- Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Sune F Nielsen
- Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Melanie J Maranian
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Maya Ghoussaini
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Shahana Ahmed
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Caroline Baynes
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Manjeet K Bolla
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Qin Wang
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Joe Dennis
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Lesley McGuffog
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Daniel Barrowdale
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Andrew Lee
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Sue Healey
- Department of Genetics, Queensland Institute of Medical Research, Brisbane, Australia
| | - Michael Lush
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Daniel C Tessier
- McGill University, Montréal, QC, Canada
- Génome Québec Innovation Centre, Montréal, QC, Canada
| | - Daniel Vincent
- McGill University, Montréal, QC, Canada
- Génome Québec Innovation Centre, Montréal, QC, Canada
| | - Françis Bacot
- McGill University, Montréal, QC, Canada
- Génome Québec Innovation Centre, Montréal, QC, Canada
| | - Study Group members
- Australian Cancer Study, Australian Ovarian Cancer Study Group, kConFab, GENICA, SWE-BRCA, HEBON, EMBRACE, GEMO Study Collaborators. Full membership lists are provided in the Supplementary Note
| | - Ignace Vergote
- Division of Gynecologic Oncology, Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
- Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Sandrina Lambrechts
- Division of Gynecologic Oncology, Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
- Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Evelyn Despierre
- Division of Gynecologic Oncology, Department of Obstetrics and Gynaecology, University Hospitals Leuven, Leuven, Belgium
- Leuven Cancer Institute, University Hospitals Leuven, Leuven, Belgium
| | - Harvey A Risch
- Department of Epidemiology and Public Health, Yale University School of Public Health and School of Medicine, New Haven, CT, USA
| | - Anna González-Neira
- Human Genotyping-CEGEN Unit, Human Cancer Genetics Program, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Mary Anne Rossing
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Guillermo Pita
- Human Genotyping-CEGEN Unit, Human Cancer Genetics Program, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Jennifer A Doherty
- Section of Biostatistics and Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Nuria Álvarez
- Human Genotyping-CEGEN Unit, Human Cancer Genetics Program, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Melissa C Larson
- Department of Health Science Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - Brooke L Fridley
- Department of Health Science Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - Nils Schoof
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Jenny Chang-Claude
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Mine S Cicek
- Department of Health Science Research, Division of Epidemiology, Mayo Clinic, Rochester, MN, USA
| | - Julian Peto
- Non-communicable Disease Epidemiology Department, London School of Hygiene and Tropical Medicine, London, UK
| | | | - Annegien Broeks
- Division of Molecular Pathology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Sebastian M Armasu
- Department of Health Science Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - Marjanka K Schmidt
- Division of Molecular Pathology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
- Division of Psychosocial Research and Epidemiology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Linde M Braaf
- Division of Molecular Pathology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Boris Winterhoff
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN, USA
| | - Heli Nevanlinna
- Department of Obstetrics and Gynecology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - Gottfried E Konecny
- David Geffen School of Medicine, Department of Medicine Division of Hematology and Oncology, University of California at Los Angeles, CA, USA
| | - Diether Lambrechts
- Laboratory for Translational Genetics, Department of Oncology, University of Leuven, Belgium
- Vesalius Research Center (VRC), VIB, Leuven, Belgium
| | - Lisa Rogmann
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN, USA
| | - Pascal Guénel
- INSERM U1018, CESP (Center for Research in Epidemiology and Population Health), Environmental Epidemiology of Cancer, Villejuif, France
- University Paris-Sud, UMRS 1018, Villejuif, France
| | - Attila Teoman
- Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, MN, USA
| | - Roger L Milne
- Genetic and Molecular Epidemiology Group, Human Cancer Genetics Program, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Joaquin J Garcia
- Department of Laboratory Medicine and Pathology, Division of Experimental Pathology, Mayo Clinic, Rochester, MN, USA
| | - Angela Cox
- CRUK/YCR Sheffield Cancer Research Centre, Department of Oncology, University of Sheffield, UK
| | - Vijayalakshmi Shridhar
- Department of Laboratory Medicine and Pathology, Division of Experimental Pathology, Mayo Clinic, Rochester, MN, USA
| | - Barbara Burwinkel
- Department of Obstetrics and Gynecology, University of Heidelberg, Heidelberg, Germany
- Molecular Epidemiology Group, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Frederik Marme
- Department of Obstetrics and Gynecology, University of Heidelberg, Heidelberg, Germany
- National Center for Tumor Diseases, University of Heidelberg, Heidelberg, Germany
| | - Rebecca Hein
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
- PMV Research Group at the Department of Child and Adolescent Psychiatry and Psychotherapy, University of Cologne, Cologne, Germany
| | - Elinor J Sawyer
- Division of Cancer Studies, NIHR Comprehensive Biomedical Research Centre, Guy's & St. Thomas' NHS Foundation Trust in partnership with King's College London, London, UK
| | - Christopher A Haiman
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Shan Wang-Gohrke
- Department of Obstetrics and Gynecology, University of Ulm, Ulm, Germany
| | - Irene L Andrulis
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- Ontario Cancer Genetics Network, Fred A. Litwin Center for Cancer Genetics, Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Kirsten B Moysich
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - John L Hopper
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, University of Melbourne, Melbourne, VIC, Australia
| | - Kunle Odunsi
- Department of Cancer Prevention and Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Annika Lindblom
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Graham G Giles
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, University of Melbourne, Melbourne, VIC, Australia
- Cancer Epidemiology Centre, The Cancer Council Victoria, Melbourne, VIC, Australia
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany
| | - Jacques Simard
- Cancer Genomics Laboratory, Centre Hospitalier Universitaire de Québec and Laval University, Quebec, Canada
| | - Galina Lurie
- Cancer Epidemiology Program, University of Hawaii Cancer Center, HI, USA
| | - Peter A Fasching
- David Geffen School of Medicine, Department of Medicine Division of Hematology and Oncology, University of California at Los Angeles, CA, USA
- University Breast Center Franconia, Department of Gynecology and Obstetrics, University Hospital Erlangen, Erlangen, Germany
| | - Michael E Carney
- Cancer Epidemiology Program, University of Hawaii Cancer Center, HI, USA
| | - Paolo Radice
- Unit of Molecular Bases of Genetic Risk and Genetic Testing, Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale Tumori (INT), Milan, Italy
- IFOM, Fondazione Istituto FIRC di Oncologia Molecolare, Milan, Italy
| | - Lynne R Wilkens
- Cancer Epidemiology Program, University of Hawaii Cancer Center, HI, USA
| | - Anthony Swerdlow
- Division of Genetics and Epidemiology, The Institute of Cancer Research, Sutton, Surrey, UK
- Division of Breast Cancer Research, The Institute of Cancer Research, Sutton, Surrey, UK
| | - Marc T Goodman
- Samuel Oschin Comprehensive Cancer Institute, Cedars Sinai Medical Center, Los Angeles, CA, USA
| | - Hiltrud Brauch
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, Germany
- University of Tübingen, Germany
| | - Montserrat García-Closas
- Breakthrough Breast Cancer Research Centre, Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | - Peter Hillemanns
- Clinics of Obstetrics and Gynaecology, Hannover Medical School, Hannover, Germany
| | - Robert Winqvist
- Laboratory of Cancer Genetics and Tumor Biology, Department of Clinical Genetics, University of Oulu, Oulu University Hospital, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Matthias Dürst
- Department of Gynecology, Jena University Hospital, Jena, Germany
| | - Peter Devilee
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
- Department of Pathology, Leiden University Medical Center, Leiden, The Netherlands
| | - Ingo Runnebaum
- Department of Gynecology, Jena University Hospital, Jena, Germany
| | - Anna Jakubowska
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Jan Lubinski
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Arto Mannermaa
- Imaging Center, Department of Clinical Pathology, Kuopio University Hospital, Kuopio, Finland
- School of Medicine, Institute of Clinical Medicine, Pathology and Forensic Medicine, Biocenter Kuopio, Cancer Center of Eastern Finland, University of Eastern Finland, Kuopio, Finland
| | - Ralf Butzow
- Department of Obstetrics and Gynecology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
- Department of Pathology, Helsinki University Central Hospital, Helsinki, Finland
| | - Natalia V Bogdanova
- Department of Obstetrics and Gynaecology, Hannover Medical School, Hannover, Germany
- Department of Radiation Oncology, Hannover Medical School, Hannover, Germany
| | - Thilo Dörk
- Department of Obstetrics and Gynaecology, Hannover Medical School, Hannover, Germany
| | - Liisa M Pelttari
- Department of Obstetrics and Gynecology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Arto Leminen
- Department of Obstetrics and Gynecology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - Hoda Anton-Culver
- Department of Epidemiology, University of California Irvine, Irvine, CA, USA
| | - Clareann H Bunker
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Vessela Kristensen
- Department of Genetics, Institute for Cancer Research, Oslo University Hospital, Radiumhospitalet, Oslo, Norway
- Faculty of Medicine (Faculty Division Ahus), UiO, Norway
| | - Roberta B Ness
- The University of Texas School of Public Health, Houston, TX, USA
| | - Kenneth Muir
- Warwick Medical School, Warwick University, Coventry, UK
- Institute of Population Health, University of Manchester, Manchester, UK
| | | | - Alfons Meindl
- Department of Gynecology and Obstetrics, Division of Tumor Genetics, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Florian Heitz
- Department of Gynecology and Gynecologic Oncology, Dr. Horst Schmidt Klinik Wiesbaden, Wiesbaden, Germany
- Department of Gynecology and Gynecologic Oncology, Kliniken Essen-Mitte, Essen, Germany
| | - Keitaro Matsuo
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Andreas du Bois
- Department of Gynecology and Gynecologic Oncology, Dr. Horst Schmidt Klinik Wiesbaden, Wiesbaden, Germany
- Department of Gynecology and Gynecologic Oncology, Kliniken Essen-Mitte, Essen, Germany
| | - Anna H Wu
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Philipp Harter
- Department of Gynecology and Gynecologic Oncology, Dr. Horst Schmidt Klinik Wiesbaden, Wiesbaden, Germany
- Department of Gynecology and Gynecologic Oncology, Kliniken Essen-Mitte, Essen, Germany
| | - Soo-Hwang Teo
- Cancer Research Initiatives Foundation, Sime Darby Medical Centre, Subang Jaya, Malaysia
- Breast Cancer Research Unit, University Malaya Cancer Research Institute, University Malaya Medical Centre, Kuala Lumpur, Malaysia
| | - Ira Schwaab
- Institut für Humangenetik Wiesbaden, Wiesbaden, Germany
| | - Xiao-Ou Shu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - William Blot
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
- International Epidemiology Institute, Rockville, MD, USA
| | - Satoyo Hosono
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Daehee Kang
- Seoul National University College of Medicine, Seoul, Korea
| | - Toru Nakanishi
- Department of Gynecologic Oncology, Aichi Cancer Center Central Hospital, Nagoya, Aichi, Japan
| | - Mikael Hartman
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore
- Saw Swee Hock School of Public Health, National University of Singapore
| | - Yasushi Yatabe
- Department of Pathology and Molecular Diagnostic, Aichi Cancer Center Central Hospital, Nagoya, Aichi, Japan
| | - Ute Hamann
- Molecular Genetics of Breast Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Beth Y Karlan
- Women's Cancer Program, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | | | - Susanne Krüger Kjaer
- Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
- The Juliane Marie Centre, Department of Obstetrics and Gynecology, Rigshospitalet, Copenhagen, Denmark
| | | | - Allan Jensen
- Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Diana Eccles
- Faculty of Medicine, University of Southampton, University Hospital Southampton, Southampton, UK
| | - Estrid Høgdall
- Virus, Lifestyle and Genes, Danish Cancer Society Research Center, Copenhagen, Denmark
- Molecular Unit, Department of Pathology, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Chen-Yang Shen
- Colleague of Public Health, China Medical University, Taichong, Taiwan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Judith Brown
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Yin Ling Woo
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University Malaya Medical Centre, University Malaya, Kuala Lumpur, Malaysia
| | - Mitul Shah
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Mat Adenan Noor Azmi
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University Malaya Medical Centre, University Malaya, Kuala Lumpur, Malaysia
| | - Robert Luben
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Siti Zawiah Omar
- Department of Obstetrics and Gynaecology, Faculty of Medicine, University Malaya Medical Centre, University Malaya, Kuala Lumpur, Malaysia
| | - Kamila Czene
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Robert A Vierkant
- Department of Health Science Research, Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - Børge G Nordestgaard
- Copenhagen General Population Study, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Biochemistry, Herlev Hospital, Copenhagen University Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Henrik Flyger
- Department of Breast Surgery, Herlev Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Celine Vachon
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Janet E Olson
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Xianshu Wang
- Department of Laboratory Medicine and Pathology, Division of Experimental Pathology, Mayo Clinic, Rochester, MN, USA
| | - Douglas A Levine
- Gynecology Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Anja Rudolph
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Rachel Palmieri Weber
- Department of Community and Family Medicine, Duke University Medical Center, Durham, NC, USA
| | - Dieter Flesch-Janys
- Department of Cancer Epidemiology/Clinical Cancer Registry, University Clinic Hamburg-Eppendorf, Hamburg, Germany
- Institute for Medical Biometrics and Epidemiology, University Clinic Hamburg-Eppendorf, Hamburg, Germany
| | - Edwin Iversen
- Department of Statistical Science, Duke University, Durham, NC, USA
- Cancer Prevention, Detection and Control Research Program, Duke Cancer Institute, Durham, NC, USA
| | - Stefan Nickels
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Joellen M Schildkraut
- Department of Community and Family Medicine, Duke University Medical Center, Durham, NC, USA
- Cancer Prevention, Detection and Control Research Program, Duke Cancer Institute, Durham, NC, USA
| | - Isabel Dos Santos Silva
- Non-communicable Disease Epidemiology Department, London School of Hygiene and Tropical Medicine, London, UK
| | - Daniel W Cramer
- Obstetrics and Gynecology Epidemiology Center, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| | - Lorna Gibson
- Non-communicable Disease Epidemiology Department, London School of Hygiene and Tropical Medicine, London, UK
| | - Kathryn L Terry
- Obstetrics and Gynecology Epidemiology Center, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| | - Olivia Fletcher
- Breakthrough Breast Cancer Research Centre, Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | - Allison F Vitonis
- Obstetrics and Gynecology Epidemiology Center, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | | | - Elizabeth M Poole
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
- Channing Division of Network Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA, USA
| | - Frans B L Hogervorst
- Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Shelley S Tworoger
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
- Channing Division of Network Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA, USA
| | - Jianjun Liu
- Human Genetics Division, Genome Institute of Singapore, Singapore
| | - Elisa V Bandera
- The Cancer Institute of New Jersey, Robert Wood Johnson Medical School, New Brunswick, NJ, USA
| | - Jingmei Li
- Human Genetics Division, Genome Institute of Singapore, Singapore
| | - Sara H Olson
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Keith Humphreys
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Irene Orlow
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Carl Blomqvist
- Department of Oncology, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | | | - Kristiina Aittomäki
- Department of Clinical Genetics, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - Helga B Salvesen
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Taru A Muranen
- Department of Obstetrics and Gynecology, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland
| | - Elisabeth Wik
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Barbara Brouwers
- Laboratory of Experimental Oncology, Department of Oncology, KU Leuven, Leuven, Belgium
- Department of General Medical Oncology, University Hospitals Leuven, Leuven Cancer Institute, Leuven, Belgium
| | - Camilla Krakstad
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Els Wauters
- Laboratory for Translational Genetics, Department of Oncology, University of Leuven, Belgium
- Vesalius Research Center (VRC), VIB, Leuven, Belgium
| | - Mari K Halle
- Department of Gynecology and Obstetrics, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Hans Wildiers
- Department of General Medical Oncology, University Hospitals Leuven, Belgium
| | - Lambertus A Kiemeney
- Comprehensive Cancer Center The Netherlands, Utrecht, The Netherlands
- Department of Epidemiology, Biostatistics and HTA, Radboud University Medical Centre, Nijmegen, Netherlands
- Department of Urology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Claire Mulot
- Université Paris Sorbonne Cité, UMR-S775 Inserm, Paris, France
| | - Katja K Aben
- Comprehensive Cancer Center The Netherlands, Utrecht, The Netherlands
- Department of Epidemiology, Biostatistics and HTA, Radboud University Medical Centre, Nijmegen, Netherlands
| | | | - Anne M van Altena
- Department of Gynecology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Thérèse Truong
- INSERM U1018, CESP (Center for Research in Epidemiology and Population Health), Environmental Epidemiology of Cancer, Villejuif, France
- University Paris-Sud, UMRS 1018, Villejuif, France
| | - Leon F A G Massuger
- Department of Gynecology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Javier Benitez
- Human Genotyping-CEGEN Unit, Human Cancer Genetics Program, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- Human Genetics Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
- Biomedical Network on Rare Diseases (CIBERER), Madrid, Spain
| | - Tanja Pejovic
- Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland, OR, USA
- Knight Cancer Institute, Oregon Health and Science University, Portland, OR, USA
| | | | - Maureen Hoatlin
- Department of Biochemistry and Molecular Biology, Oregon Health and Science University, Portland, OR, USA
| | - M Pilar Zamora
- Servicio de Oncología Médica, Hospital Universitario La Paz, Madrid, Spain
| | - Linda S Cook
- Division of Epidemiology and Biostatistics, University of New Mexico, Albuquerque, NM, USA
| | | | - Linda E Kelemen
- Department of Population Health Research, Alberta Health Services-Cancer Care, Calgary, Alberta, Canada
- Department of Medical Genetics, University of Calgary, Calgary, Alberta, Canada
- Department of Oncology, University of Calgary, Calgary, Alberta, Canada
| | - Andreas Schneeweiss
- Department of Obstetrics and Gynecology, University of Heidelberg, Heidelberg, Germany
- National Center for Tumor Diseases, University of Heidelberg, Heidelberg, Germany
| | - Nhu D Le
- Cancer Control Research, BC Cancer Agency, Vancouver, BC, Canada
| | - Christof Sohn
- Department of Obstetrics and Gynecology, University of Heidelberg, Heidelberg, Germany
| | - Angela Brooks-Wilson
- Genome Sciences Centre, BC Cancer Agency, Vancouver, BC, Canada
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada
| | - Ian Tomlinson
- Welcome Trust Centre for Human Genetics, University of Oxford, UK
- Oxford Biomedical Research Centre, University of Oxford, UK
| | - Michael J Kerin
- School of medicine, National University of Ireland Galway, Ireland
| | - Nicola Miller
- School of medicine, National University of Ireland Galway, Ireland
| | - Cezary Cybulski
- International Hereditary Cancer Center, Department of Genetics and Pathology, Pomeranian Medical Academy, Szczecin, Poland
| | - Brian E Henderson
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Janusz Menkiszak
- Department of Surgical Gynecology and Gynecological Oncology of Adults and Adolescents, Pomeranian Medical University, Szczecin, Poland
| | - Fredrick Schumacher
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Nicolas Wentzensen
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Loic Le Marchand
- Epidemiology Program, Cancer Research Center, University of Hawaii, Honolulu, HI, USA
| | - Hannah P Yang
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Anna Marie Mulligan
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Laboratory Medicine Program, University Health Network, Toronto, ON, Canada
| | - Gord Glendon
- Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Svend Aage Engelholm
- Department of Radiation Oncology, Rigshospitalet, University of Copenhagen, Denmark
| | - Julia A Knight
- Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
- Prosserman Centre for Health Research, Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Claus K Høgdall
- The Juliane Marie Centre, Department of Obstetrics and Gynecology, Rigshospitalet, Copenhagen, Denmark
| | - Carmel Apicella
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, University of Melbourne, Melbourne, VIC, Australia
| | - Martin Gore
- Gynecological Oncology Unit, The Royal Marsden Hospital, London, UK
| | - Helen Tsimiklis
- Genetic Epidemiology Department, Department of Pathology, The University of Melbourne, Melbourne, Australia
| | - Honglin Song
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Melissa C Southey
- Genetic Epidemiology Department, Department of Pathology, The University of Melbourne, Melbourne, Australia
| | - Agnes Jager
- Department of Medical Oncology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | | | - Robert Brown
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - John W M Martens
- Department of Medical Oncology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - James M Flanagan
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Mieke Kriege
- Department of Medical Oncology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - James Paul
- The Beatson West of Scotland Cancer Centre, Glasgow, UK
| | - Sara Margolin
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Nadeem Siddiqui
- Department of Gynecological Oncology, Glasgow Royal Infirmary, Glasgow, UK
| | - Gianluca Severi
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, University of Melbourne, Melbourne, VIC, Australia
- Cancer Epidemiology Centre, The Cancer Council Victoria, Melbourne, VIC, Australia
| | - Alice S Whittemore
- Department of Health Research and Policy, Stanford University School of Medicine, Stanford, CA, USA
| | - Laura Baglietto
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, University of Melbourne, Melbourne, VIC, Australia
- Cancer Epidemiology Centre, The Cancer Council Victoria, Melbourne, VIC, Australia
| | - Valerie McGuire
- Department of Health Research and Policy, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Weiva Sieh
- Department of Health Research and Policy, Stanford University School of Medicine, Stanford, CA, USA
| | - Heiko Müller
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany
| | - Volker Arndt
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany
| | - France Labrèche
- Département de médecine sociale et préventive, Département de santé environnementale et santé au travail, Université de Montréal, Montreal, Quebec, Canada
| | - Yu-Tang Gao
- Department of Epidemiology, Shanghai Cancer Institute, Shanghai, China
| | - Mark S Goldberg
- Department of Medicine, McGill University, Montreal, Quebec, Canada
- Division of Clinical Epidemiology, McGill University Health Centre, Royal Victoria Hospital, Montreal, Quebec, Canada
| | - Gong Yang
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Martine Dumont
- Cancer Genomics Laboratory, Centre Hospitalier Universitaire de Québec and Laval University, Quebec, Canada
| | - John R McLaughlin
- Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, Faculty of Medicine, University of Toronto, Canada
| | - Arndt Hartmann
- Institute of Pathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Arif B Ekici
- Institute of Human Genetics, Friedrich Alexander University Erlangen-Nuremberg, Erlangen, Germany
| | - Matthias W Beckmann
- University Breast Center Franconia, Department of Gynecology and Obstetrics, University Hospital Erlangen, Erlangen, Germany
| | - Catherine M Phelan
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Michael P Lux
- University Breast Center Franconia, Department of Gynecology and Obstetrics, University Hospital Erlangen, Erlangen, Germany
| | - Jenny Permuth-Wey
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Bernard Peissel
- Unit of Medical Genetics, Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale Tumori (INT), Milan, Italy
| | - Thomas A Sellers
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Filomena Ficarazzi
- IFOM, Fondazione Istituto FIRC di Oncologia Molecolare, Milan, Italy
- Cogentech Cancer Genetic Test Laboratory, Milan, Italy
| | - Monica Barile
- Division of Cancer Prevention and Genetics, Istituto Europeo di Oncologia, Milan, Italy
| | - Argyrios Ziogas
- Department of Epidemiology, Center for Cancer Genetics Research and Prevention, School of Medicine, University of California Irvine, Irvine, CA, USA
| | - Alan Ashworth
- Breakthrough Breast Cancer Research Centre, Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | | | - Michael Jones
- Division of Genetics and Epidemiology, The Institute of Cancer Research, Sutton, Surrey, UK
| | - Susan J Ramus
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Nick Orr
- Breakthrough Breast Cancer Research Centre, Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | - Usha Menon
- Gynaecological Cancer Research Centre, UCL EGA Institute for Women's Health, London, UK
| | - Celeste L Pearce
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Thomas Brüning
- Institute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-Universität Bochum, Bochum, Germany
| | - Malcolm C Pike
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Yon-Dschun Ko
- Department of Internal Medicine, Evangelische Kliniken Bonn GmbH, Johanniter Krankenhaus, Bonn, Germany
| | - Jolanta Lissowska
- Department of Cancer Epidemiology and Prevention, M. Sklodowska-Curie Memorial Cancer Center & Institute of Oncology, Warsaw, Poland
| | - Jonine Figueroa
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Jolanta Kupryjanczyk
- Department of Molecular Pathology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Stephen J Chanock
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Agnieszka Dansonka-Mieszkowska
- Department of Molecular Pathology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | | | - Iwona K Rzepecka
- Department of Molecular Pathology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Katri Pylkäs
- Laboratory of Cancer Genetics and Tumor Biology, Department of Clinical Genetics, University of Oulu, Oulu University Hospital, Oulu, Finland
- Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Mariusz Bidzinski
- Department of Gynecologic Oncology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Saila Kauppila
- Department of Pathology, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Antoinette Hollestelle
- Family Cancer Clinic, Department of Medical Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam, The Netherlands
| | - Caroline Seynaeve
- Family Cancer Clinic, Department of Medical Oncology, Erasmus MC, Daniel den Hoed Cancer Center, Rotterdam, The Netherlands
| | - Rob A E M Tollenaar
- Department of Surgical Oncology, Leiden University Medical Center, Leiden, The Netherlands
| | - Katarzyna Durda
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Katarzyna Jaworska
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
- Postgraduate School of Molecular Medicine, Warsaw Medical University, Warsaw, Poland
| | - Jaana M Hartikainen
- Imaging Center, Department of Clinical Pathology, Kuopio University Hospital, Kuopio, Finland
- School of Medicine, Institute of Clinical Medicine, Pathology and Forensic Medicine, Biocenter Kuopio, Cancer Center of Eastern Finland, University of Eastern Finland, Kuopio, Finland
| | - Veli-Matti Kosma
- Imaging Center, Department of Clinical Pathology, Kuopio University Hospital, Kuopio, Finland
- School of Medicine, Institute of Clinical Medicine, Pathology and Forensic Medicine, Biocenter Kuopio, Cancer Center of Eastern Finland, University of Eastern Finland, Kuopio, Finland
| | - Vesa Kataja
- School of Medicine, Institute of Clinical Medicine, Pathology and Forensic Medicine, Biocenter Kuopio, Cancer Center of Eastern Finland, University of Eastern Finland, Kuopio, Finland
| | - Natalia N Antonenkova
- N.N. Alexandrov Research Institute of Oncology and Medical Radiology, Minsk, Belarus
| | - Jirong Long
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Martha Shrubsole
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Sandra Deming-Halverson
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Artitaya Lophatananon
- Warwick Medical School, Warwick University, Coventry, UK
- Institute of Population Health, University of Manchester, Manchester, UK
| | | | | | - Nina Ditsch
- Department of Gynecology and Obstetrics, Ludwig-Maximilians-Universität, Munich, Germany
| | - Peter Lichtner
- Insitute of Human Genetics, Technische Universität, Munich, Germany
| | - Rita K Schmutzler
- Centre of Familial Breast and Ovarian Cancer, Department of Gynaecology and Obstetrics, University Hospital of Cologne, Cologne, Germany
- Centre for Molecular Medicine Cologne (CMMC), University Hospital of Cologne, Cologne, Germany
| | - Hidemi Ito
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Hiroji Iwata
- Department of Breast Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
| | - Kazuo Tajima
- Division of Epidemiology and Prevention, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Chiu-Chen Tseng
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Daniel O Stram
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - David van den Berg
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Cheng Har Yip
- Breast Cancer Research Unit, University Malaya Cancer Research Institute, University Malaya Medical Centre, Kuala Lumpur, Malaysia
| | - M Kamran Ikram
- Singapore Eye Research Institute, National University of Singapore, Singapore
| | - Yew-Ching Teh
- Breast Cancer Research Unit, University Malaya Cancer Research Institute, University Malaya Medical Centre, Kuala Lumpur, Malaysia
| | - Hui Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Wei Lu
- Shanghai Center for Disease Control and Prevention, Shanghai, China
| | - Lisa B Signorello
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
- International Epidemiology Institute, Rockville, MD, USA
| | - Qiuyin Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Dong-Young Noh
- Seoul National University College of Medicine, Seoul, Korea
| | - Keun-Young Yoo
- Seoul National University College of Medicine, Seoul, Korea
| | - Hui Miao
- Saw Swee Hock School of Public Health, National University of Singapore
| | - Philip Tsau-Choong Iau
- Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore
| | - Yik Ying Teo
- Saw Swee Hock School of Public Health, National University of Singapore
| | - James McKay
- International Agency for Research on Cancer, Lyon, France
| | - Charles Shapiro
- Division of Oncology, Wexner Medical Center, The Ohio State University, Columbus, OH, USA
| | | | - George Fountzilas
- Department of Medical Oncology, Papageorgiou Hospital, Aristotle University of Thessaloniki School of Medicine, Thessaloniki, Macedonia, Greece
| | - Chia-Ni Hsiung
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Jyh-Cherng Yu
- Department of Surgery, Tri-Service General Hospital, Taipei, Taiwan
| | - Ming-Feng Hou
- Cancer Center, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung, Taiwan
- Department of Surgery, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung, Taiwan
| | - Catherine S Healey
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Craig Luccarini
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Susan Peock
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Dominique Stoppa-Lyonnet
- Institut Curie, Department of Tumour Biology, Paris, France
- Institut Curie, INSERM U830, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, France
| | - Paolo Peterlongo
- Unit of Molecular Bases of Genetic Risk and Genetic Testing, Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale Tumori (INT), Milan, Italy
- IFOM, Fondazione Istituto FIRC di Oncologia Molecolare, Milan, Italy
| | - Timothy R Rebbeck
- Basser Research Centre, Abramson Cancer Center, The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Center for Clinical Epidemiology and Biostatistics, The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Marion Piedmonte
- Gynecologic Oncology Group Statistical and Data Center, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Christian F Singer
- Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Eitan Friedman
- The Susanne Levy Gertner Oncogenetics Unit, Sheba Medical Center, Tel-Hashomer, Israel
- Institute of Oncology, Sheba Medical Center, Tel-Hashomer, Israel
| | - Mads Thomassen
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | - Kenneth Offit
- Clinical Genetics Service, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Thomas V O Hansen
- Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Susan L Neuhausen
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, CA, USA
| | - Csilla I Szabo
- Center for Translational Cancer Research, Department of Biological Sciences, University of Delaware, Newark, DE, USA
| | - Ignacio Blanco
- Genetic Counseling Unit, Hereditary Cancer Program, IDIBELL-Catalan Institute of Oncology, Barcelona, Spain
| | - Judy Garber
- Dana-Farber Cancer Institute, Boston, MA, USA
| | - Steven A Narod
- Women's College Research Institute, University of Toronto, Toronto, Ontario, Canada
| | | | - Marco Montagna
- Immunology and Molecular Oncology Unit, Istituto Oncologico Veneto IOV - IRCCS, Padua, Italy
| | - Edith Olah
- Department of Molecular Genetics, National Institute of Oncology, Budapest, Hungary
| | - Andrew K Godwin
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Drakoulis Yannoukakos
- Molecular Diagnostics Laboratory, IRRP, National Centre for Scientific Research Demokritos, Aghia Paraskevi Attikis, Athens, Greece
| | - David E Goldgar
- Department of Dermatology, University of Utah School of Medicine, Salt Lake City, UT, USA
- Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Trinidad Caldes
- Molecular Oncology Laboratory, Hospital Clinico San Carlos, IdISSC, Madrid, Spain
| | | | | | - Banu K Arun
- Department of Breast Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Clinical Cancer Genetics, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ian Campbell
- VBCRC Cancer Genetics Laboratory, Peter MacCallum Cancer Centre, Melbourne, Australia
| | - Arjen R Mensenkamp
- Department of Human Genetics, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Christi J van Asperen
- Department of Clinical Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Kees E P van Roozendaal
- Department of Clinical Genetics, Maastricht University Medical Canter, Maastricht, The Netherlands
| | - Hanne Meijers-Heijboer
- Department of Clinical Genetics, VU University Medical Centre, Amsterdam, The Netherlands
| | - J Margriet Collée
- Department of Clinical Genetics, Family Cancer Clinic, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Jan C Oosterwijk
- University of Groningen, University Medical Center, Department of Genetics, Groningen, The Netherlands
| | - Maartje J Hooning
- Department of Medical Oncology, Family Cancer Clinic, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Matti A Rookus
- Division of Molecular Pathology, Netherlands Cancer Institute, Antoni van Leeuwenhoek Hospital, Amsterdam, The Netherlands
| | - Rob B van der Luijt
- Department of Medical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Theo A M van Os
- Department of Clinical Genetics, Academic Medical Center, Amsterdam, The Netherlands
| | - D Gareth Evans
- Genetic Medicine, Manchester Academic Health Sciences Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester, UK
| | - Debra Frost
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Elena Fineberg
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Julian Barwell
- Leicestershire Clinical Genetics Service, University Hospitals of Leicester NHS Trust, UK
| | - Lisa Walker
- Oxford Regional Genetics Service, Churchill Hospital, Oxford, UK
| | - M John Kennedy
- Academic Unit of Clinical and Molecular Oncology, Trinity College Dublin and St James's Hospital, Dublin, Eire
| | - Radka Platte
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | | | - Steve D Ellis
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Trevor Cole
- West Midlands Regional Genetics Service, Birmingham Women's Hospital Healthcare NHS Trust, Edgbaston, Birmingham, UK
| | - Brigitte Bressac-de Paillerets
- INSERM U946, Fondation Jean Dausset, Paris, France
- Service de Génétique, Institut de Cancérologie Gustave Roussy, Villejuif, France
| | - Bruno Buecher
- Institut Curie, Department of Tumour Biology, Paris, France
| | - Francesca Damiola
- INSERM U1052, CNRS UMR5286, Université Lyon 1, Centre de Recherche en Cancérologie de Lyon, Lyon, France
| | - Laurence Faivre
- Centre de Génétique, CHU Dijon, Université de Bourgogne, Dijon, France, and Centre Georges François Leclerc, Dijon, France
| | | | - Olga M Sinilnikova
- INSERM U1052, CNRS UMR5286, Université Lyon 1, Centre de Recherche en Cancérologie de Lyon, Lyon, France
- Unité Mixte de Génétique Constitutionnelle des Cancers Fréquents, Hospices Civils de Lyon, Centre Léon Bérard, Lyon, France
| | - Olivier Caron
- Consultation de Génétique, Département de Médecine, Institut de Cancérologie Gustave Roussy, Villejuif, France
| | - Sophie Giraud
- Unité Mixte de Génétique Constitutionnelle des Cancers Fréquents, Hospices Civils de Lyon, Centre Léon Bérard, Lyon, France
| | - Sylvie Mazoyer
- INSERM U1052, CNRS UMR5286, Université Lyon 1, Centre de Recherche en Cancérologie de Lyon, Lyon, France
| | - Valérie Bonadona
- Unité de Prévention et d'Epidémiologie Génétique, Centre Léon Bérard, Lyon, France
- Université Lyon 1, CNRS UMR5558, Lyon, France
| | | | | | - Jacek Gronwald
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Tomasz Byrski
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - Amanda B Spurdle
- Department of Genetics, Queensland Institute of Medical Research, Brisbane, Australia
| | - Bernardo Bonanni
- Division of Cancer Prevention and Genetics, Istituto Europeo di Oncologia, Milan, Italy
| | - Daniela Zaffaroni
- Unit of Medical Genetics, Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale Tumori (INT), Milan, Italy
| | | | - Loris Bernard
- Cogentech Cancer Genetic Test Laboratory, Milan, Italy
- Department of Experimental Oncology, Istituto Europeo di Oncologia, Milan, Italy
| | - Riccardo Dolcetti
- Cancer Bioimmunotherapy Unit, Centro di Riferimento Oncologico, IRCCS, Aviano, Italy
| | - Siranoush Manoukian
- Unit of Medical Genetics, Department of Preventive and Predictive Medicine, Fondazione IRCCS Istituto Nazionale Tumori (INT), Milan, Italy
| | - Norbert Arnold
- Department of Gynecology and Obstetrics, University Hospital of Schleswig-Holstein/University Kiel, Kiel, Germany
| | - Christoph Engel
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany
| | | | - Kerstin Rhiem
- Centre of Familial Breast and Ovarian Cancer, Department of Gynaecology and Obstetrics, University Hospital of Cologne, Cologne, Germany
- Centre for Molecular Medicine Cologne (CMMC), University Hospital of Cologne, Cologne, Germany
| | - Dieter Niederacher
- Department of Obstetrics and Gynecology, University Medical Center, Heinrich-Heine University, Düsseldorf, Germany
| | - Hansjoerg Plendl
- Institute of Human Genetics, University Hospital of Schleswig-Holstein, University Kiel, Kiel, Germany
| | - Christian Sutter
- Department of Human Genetics, University of Heidelberg, Heidelberg, Germany
| | - Barbara Wappenschmidt
- Centre of Familial Breast and Ovarian Cancer, Department of Gynaecology and Obstetrics, University Hospital of Cologne, Cologne, Germany
- Centre for Molecular Medicine Cologne (CMMC), University Hospital of Cologne, Cologne, Germany
| | - Åke Borg
- Department of Oncology, Lund University, Lund, Sweden
| | - Beatrice Melin
- Department of Radiation Sciences, Oncology, Umeå University, Umeå, Sweden
| | - Johanna Rantala
- Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Maria Soller
- Department of Clinical Genetics, University and Regional Laboratories, Lund University Hospital, Lund, Sweden
| | - Katherine L Nathanson
- Basser Research Centre, Abramson Cancer Center, The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Susan M Domchek
- Basser Research Centre, Abramson Cancer Center, The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
- Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Gustavo C Rodriguez
- Division of Gynecologic Oncology, North Shore University Health System, University of Chicago, Evanston, IL, USA
| | - Ritu Salani
- Department of Obstetrics and Gynecology, Ohio State University College of Medicine, Columbus, OH, USA
| | - Daphne Gschwantler Kaulich
- Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Muy-Kheng Tea
- Department of Obstetrics and Gynecology, Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Shani Shimon Paluch
- The Susanne Levy Gertner Oncogenetics Unit, Sheba Medical Center, Tel-Hashomer, Israel
- Institute of Oncology, Sheba Medical Center, Tel-Hashomer, Israel
| | - Yael Laitman
- The Susanne Levy Gertner Oncogenetics Unit, Sheba Medical Center, Tel-Hashomer, Israel
- Institute of Oncology, Sheba Medical Center, Tel-Hashomer, Israel
| | | | - Torben A Kruse
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | - Uffe Birk Jensen
- Department of Clinical Genetics, Aarhus University Hospital, Aarhus, Denmark
| | - Mark Robson
- Clinical Genetics Service, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Anne-Marie Gerdes
- Department of Clinical Genetics, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Bent Ejlertsen
- Department of Oncology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Lenka Foretova
- Department of Cancer Epidemiology and Genetics, Masaryk Memorial Cancer Institute, Brno, Czech Republic
| | - Sharon A Savage
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Jenny Lester
- Women's Cancer Program, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Penny Soucy
- Cancer Genomics Laboratory, Centre Hospitalier Universitaire de Québec and Laval University, Quebec, Canada
| | - Karoline B Kuchenbaecker
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Curtis Olswold
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Julie M Cunningham
- Department of Laboratory Medicine and Pathology, Division of Experimental Pathology, Mayo Clinic, Rochester, MN, USA
| | - Susan Slager
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Vernon S Pankratz
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Ed Dicks
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | - Sunil R Lakhani
- University of Queensland, UQ Centre for Clinical Research (UQCCR) Royal Brisbane and Women's Hospital, Herston, QLD, Australia
- The UQ Centre for Clinical Research, The University of Queensland, The Royal Brisbane and Women's Hospital, Herston, Brisbane, QLD, Australia
| | - Fergus J Couch
- Department of Laboratory Medicine and Pathology, Division of Experimental Pathology, Mayo Clinic, Rochester, MN, USA
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA
| | - Per Hall
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Alvaro N A Monteiro
- Department of Cancer Epidemiology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Simon A Gayther
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Paul D P Pharoah
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Roger R Reddel
- Cancer Research Unit, Children's Medical Research Institute, Westmead, NSW, Australia
- Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - Ellen L Goode
- Department of Health Science Research, Division of Epidemiology, Mayo Clinic, Rochester, MN, USA
| | - Mark H Greene
- Clinical Genetics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Rockville, MD, USA
| | - Douglas F Easton
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| | - Andrew Berchuck
- Duke Cancer Institute, Duke University Medical Center, Durham, NC, USA
| | - Antonis C Antoniou
- Centre for Cancer Genetic Epidemiology, Department of Public Health and Primary Care, University of Cambridge, Cambridge, UK
| | | | - Alison M Dunning
- Centre for Cancer Genetic Epidemiology, Department of Oncology, University of Cambridge, Cambridge, UK
| |
Collapse
|
131
|
Le Saux CJ, Davy P, Brampton C, Ahuja SS, Fauce S, Shivshankar P, Nguyen H, Ramaseshan M, Tressler R, Pirot Z, Harley CB, Allsopp R. A novel telomerase activator suppresses lung damage in a murine model of idiopathic pulmonary fibrosis. PLoS One 2013; 8:e58423. [PMID: 23516479 PMCID: PMC3597721 DOI: 10.1371/journal.pone.0058423] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Accepted: 02/06/2013] [Indexed: 11/24/2022] Open
Abstract
The emergence of diseases associated with telomere dysfunction, including AIDS, aplastic anemia and pulmonary fibrosis, has bolstered interest in telomerase activators. We report identification of a new small molecule activator, GRN510, with activity ex vivo and in vivo. Using a novel mouse model, we tested the potential of GRN510 to limit fibrosis induced by bleomycin in mTERT heterozygous mice. Treatment with GRN510 at 10 mg/kg/day activated telomerase 2–4 fold both in hematopoietic progenitors ex vivo and in bone marrow and lung tissue in vivo, respectively. Telomerase activation was countered by co-treatment with Imetelstat (GRN163L), a potent telomerase inhibitor. In this model of bleomycin-induced fibrosis, treatment with GRN510 suppressed the development of fibrosis and accumulation of senescent cells in the lung via a mechanism dependent upon telomerase activation. Treatment of small airway epithelial cells (SAEC) or lung fibroblasts ex vivo with GRN510 revealed telomerase activating and replicative lifespan promoting effects only in the SAEC, suggesting that the mechanism accounting for the protective effects of GRN510 against induced lung fibrosis involves specific types of lung cells. Together, these results support the use of small molecule activators of telomerase in therapies to treat idiopathic pulmonary fibrosis.
Collapse
Affiliation(s)
- Claude Jourdan Le Saux
- University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
| | - Philip Davy
- John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, United States of America
| | - Christopher Brampton
- John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, United States of America
| | - Seema S. Ahuja
- University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
| | - Steven Fauce
- Geron Corporation, Menlo Park, California, United States of America
- Beckman Coulter, Inc., Brea, California, United States of America
| | - Pooja Shivshankar
- University of Texas Health Science Center at San Antonio, San Antonio, Texas, United States of America
| | - Hieu Nguyen
- John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, United States of America
| | | | - Robert Tressler
- Geron Corporation, Menlo Park, California, United States of America
- Cellerant, Redwood City, California, United States of America
| | - Zhu Pirot
- Geron Corporation, Menlo Park, California, United States of America
| | - Calvin B. Harley
- Geron Corporation, Menlo Park, California, United States of America
| | - Richard Allsopp
- John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, United States of America
- * E-mail:
| |
Collapse
|
132
|
Gouda MI, El-Anwar MW, Hosny SM, Ali MA. Telomerase activity detection in cholesteatoma. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.ejenta.2012.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
133
|
Shiraha H, Yamamoto K, Namba M. Human hepatocyte carcinogenesis (review). Int J Oncol 2013; 42:1133-8. [PMID: 23426905 PMCID: PMC3622653 DOI: 10.3892/ijo.2013.1829] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Accepted: 10/22/2012] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma is the third most frequent cause of cancer-related death worldwide; and its incidence rate is increasing. Clinical and molecular medical analyses have revealed substantial information on hepatocarcinogenesis. Hepatocarcinogenesis is a stepwise process during which multiple genes are altered. Genetic changes and their biological consequences in human HCC can be divided into at least 4 groups: i) tumor suppressor genes (p53, retinoblastoma, phosphatase tensin homolog and runt-related transcription factor 3), ii) oncogenes (myc, K-ras, BRAF), iii) reactivation of developmental pathways (Wnt, hedgehog), and iv) growth factors and their receptors (transforming growth factor-α, insulin-like growth factor-2 receptor). An experimental model of human hepatocarcinogenesis such as in vitro neoplastic transformation of human hepatocytes has not been successfully achieved yet, but several immortalized human hepatocyte cell lines have been established. These immortalized human hepatocytes will become useful tools for the elucidation of hepatocarcinogenesis, especially for the initial step of multistep hepatocarcinogenesis.
Collapse
Affiliation(s)
- Hidenori Shiraha
- Department of Gastroenterology and Hepatology, Okayama University Faculty of Medicine, Okayama 700-8558, Japan.
| | | | | |
Collapse
|
134
|
York TP, Brumelle J, Juusola J, Kendler KS, Eaves LJ, Amstadter AB, Aggen SH, Jones KH, Ferreira-Gonzalez A, Jackson-Cook C. Increased frequency of micronuclei in adults with a history of childhood sexual abuse: a discordant monozygotic twin study. PLoS One 2013; 8:e55337. [PMID: 23383158 PMCID: PMC3559336 DOI: 10.1371/journal.pone.0055337] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 11/23/2012] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Childhood sexual abuse (CSA) is a traumatic life event associated with an increased lifetime risk for psychopathology/morbidity. The long-term biological consequences of CSA-elicited stress on chromosomal stability in adults are unknown. The primary aim of this study was to determine if the rate of acquired chromosomal changes, measured using the cytokinesis-block micronucleus assay on stimulated peripheral blood lymphocytes, differs in adult female monozygotic twins discordant for CSA. METHODS Monozygotic twin pairs discordant for CSA were identified from a larger population-based sample of female adult twins for whom the experience of CSA was assessed by self-report (51 individuals including a reference sample). Micronuclei (MN) contain chromatin from structurally normal or abnormal chromosomes that are excluded from the daughter nuclei during cell division and serve as a biomarker to assess acquired chromosomal instability. RESULTS Female twins exposed to CSA exhibited a 1.63-fold average increase in their frequency of MN compared to their nonexposed genetically identical cotwins (Paired t-test, t₁₆ = 2.65, P = 0.017). No additional effects of familial factors were detected after controlling for the effect of CSA exposure. A significant interaction between CSA history and age was observed, suggesting that the biological effects of CSA on MN formation may be cumulative. CONCLUSIONS These data support a direct link between CSA exposure and MN formation measured in adults that is not attributable to genetic or environmental factors shared by siblings. Further research is warranted to understand the biological basis for the observed increase in acquired chromosomal findings in people exposed to CSA and to determine if acquired somatic chromosomal abnormalities/somatic clonal mosaicism might mediate the adult pathology associated with CSA.
Collapse
Affiliation(s)
- Timothy P York
- Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, Virginia, United States of America.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
135
|
Abstract
In this chapter a review of animal model systems already being utilized to study normal and pathologic wound healing is provided. We also go into details on alternatives for animal wound model systems. The case is made for limitations in the various approaches. We also discuss the benefits/limitations of in vitro/ex vivo systems bringing everything up to date with our current work on developing a cell-based reporter system for diabetic wound healing.
Collapse
Affiliation(s)
- Phil Stephens
- Wound Biology Group, Cardiff Institute of Tissue Engineering and Repair Tissue Engineering and Reparative Dentistry, School of Dentistry, Cardiff University, Cardiff, Wales, UK
| | | | | |
Collapse
|
136
|
Celik O, Celik E, Turkcuoglu I, Yilmaz E, Simsek Y, Tiras B. Germline cells in ovarian surface epithelium of mammalians: a promising notion. Reprod Biol Endocrinol 2012; 10:112. [PMID: 23245287 PMCID: PMC3566967 DOI: 10.1186/1477-7827-10-112] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Accepted: 12/14/2012] [Indexed: 01/03/2023] Open
Abstract
It is a long held doctrine in reproductive biology that women are born with a finite number of oocytes and there is no oogenesis during the postnatal period. However, recent evidence challenges this by showing the presence of germ line stem cells in the human ovarian surface epithelium (OSE), which can serve as a source of germ cells, and differentiate into oocyte like structures. Postnatal renewal of oocytes may have enormous therapeutic potential especially in women facing the risk of premature ovarian failure idiopathically or iatrogenically after exposure to gonadotoxic chemotherapy and radiation for cancer therapy.This article reviews current knowledge on germ line stem cells in human OSE.
Collapse
Affiliation(s)
- Onder Celik
- Department of Obstetrics and Gynecology, Inonu University, Medical Faculty, Malatya, Turkey
| | - Ebru Celik
- Department of Obstetrics and Gynecology, Inonu University, Medical Faculty, Malatya, Turkey
| | - Ilgin Turkcuoglu
- Department of Obstetrics and Gynecology, Inonu University, Medical Faculty, Malatya, Turkey
| | - Ercan Yilmaz
- Department of Obstetrics and Gynecology, Inonu University, Medical Faculty, Malatya, Turkey
| | - Yavuz Simsek
- Department of Obstetrics and Gynecology, Inonu University, Medical Faculty, Malatya, Turkey
| | - Bulent Tiras
- Department of Obstetric and Gynecology, Acibadem University, School of Medicine, Istanbul, Turkey
| |
Collapse
|
137
|
Sun J, Zhu H, Yang ZM, Zhu HL. Synthesis, molecular modeling and biological evaluation of 2-aminomethyl-5-(quinolin-2-yl)-1,3,4-oxadiazole-2(3H)-thione quinolone derivatives as novel anticancer agent. Eur J Med Chem 2012; 60:23-8. [PMID: 23279864 DOI: 10.1016/j.ejmech.2012.11.039] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 10/16/2012] [Accepted: 11/26/2012] [Indexed: 11/30/2022]
Abstract
A series of quinoline derivatives (4a-4o) have been synthesized and their biological activities were also evaluated as potential telomerase inhibitors. Bioassay tests demonstrated that most of the compounds exhibited substantial broad-spectrum antitumor activity against the three cancer cell lines (HepG2, SGC-7901 and MCF-7). Moreover, all the title compounds were assayed for telomerase inhibition using the TRAP-PCR-ELISA assay. Compounds 4d and 4i displayed the most potent anticancer activities, which were comparable to the positive control. Docking simulation was performed to position compounds 4d and 4i into the telomerase structure active site to determine the probable binding model. Compounds 4d and 4i with potent inhibitory activity in tumor growth inhibition may be potential anticancer agents.
Collapse
Affiliation(s)
- Juan Sun
- School of Life Sciences, Shandong University of Technology, Shandong 255049, People's Republic of China
| | | | | | | |
Collapse
|
138
|
Abstract
Human telomerase reverse transcriptase (hTERT) is the catalytic subunit of the human telomerase complex. Growing evidence suggests that hTERT also contributes to the cell physiology independently of telomere elongation. However, its role in bacterial infection is unknown. Here we show that hTERT is critical for Listeria monocytogenes infection, as the depletion of hTERT impaired bacterial intracellular replication. In addition, we observed that L. monocytogenes caused a decrease in hTERT levels at early time points of the infectious process. This effect was mediated by the pore-forming toxin listeriolysin O (LLO) and did not require bacterial entry into host cells. Calcium influx through the LLO pores contributed to a proteasome-independent decrease in hTERT protein levels. Together, our data provide evidence that these bacteria trigger hTERT degradation, an event that is detrimental to bacterial replication.
Collapse
|
139
|
Mannoor K, Liao J, Jiang F. Small nucleolar RNAs in cancer. BIOCHIMICA ET BIOPHYSICA ACTA 2012; 1826:121-8. [PMID: 22498252 PMCID: PMC3842010 DOI: 10.1016/j.bbcan.2012.03.005] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2012] [Revised: 03/19/2012] [Accepted: 03/20/2012] [Indexed: 12/16/2022]
Abstract
Non-coding RNAs (ncRNAs) are important regulatory molecules involved in various physiological and cellular processes. Alterations of ncRNAs, particularly microRNAs, play crucial roles in tumorigenesis. Accumulating evidence indicates that small nucleolar RNAs (snoRNAs), another large class of small ncRNAs, are gaining prominence and more actively involved in carcinogenesis than previously thought. Some snoRNAs exhibit differential expression patterns in a variety of human cancers and demonstrate capability to affect cell transformation, tumorigenesis, and metastasis. We are beginning to comprehend the functional repercussions of snoRNAs in the development and progression of malignancy. In this review, we will describe current studies that have shed new light on the functions of snoRNAs in carcinogenesis and the potential applications for cancer diagnosis and therapy.
Collapse
Affiliation(s)
- Kaiissar Mannoor
- Department of Pathology, University of Maryland School of Medicine, 10 S, Pine St, Baltimore, MD 21201, USA
| | - Jipei Liao
- Department of Pathology, University of Maryland School of Medicine, 10 S, Pine St, Baltimore, MD 21201, USA
| | - Feng Jiang
- Department of Pathology, University of Maryland School of Medicine, 10 S, Pine St, Baltimore, MD 21201, USA
| |
Collapse
|
140
|
Exploring the utility of genetic markers for predicting biological age. Leg Med (Tokyo) 2012; 14:279-85. [PMID: 22770678 DOI: 10.1016/j.legalmed.2012.05.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Accepted: 05/31/2012] [Indexed: 12/28/2022]
Abstract
DNA evidence can be analyzed for genetic markers to determine phenotypes such as hair and eye color, ancestry, and even age estimation. Currently, telomere length is the only genetic biomarker that has been correlated to cell replication and replicative cell senescence--both strong indicators of tissue aging in humans. Unfortunately, while many studies have found a strong correlation between telomere length and age, many data sets show extreme variability, technical assay malfunction, inadequate evaluation of other variables that can impact telomere, altogether conflicting results, or insignificant correlations due to low sample size. Other, non-telomere based methods are problematic, as they often have only the ability to identify newborns or are only viable for specific tissue or cell types, and for most, the effects of outside variables have not been fully evaluated. Thus, telomeres remain the most promising biomarker for age estimation; mechanisms for telomere repeat attrition over time have been well documented. Unfortunately, assays currently used determine mean telomere length of a sample, are not precise or reproducible. New techniques should be robust enough to determine age across a broad spectrum of age ranges, and the effect of other variables (gender, race, disease, etc.), must be explored.
Collapse
|
141
|
Abstract
The aging field is replete with theories. Over the past years, many distinct, yet overlapping mechanisms have been proposed to explain organismal aging. These include free radicals, loss of heterochromatin, genetically programmed senescence, telomere shortening, genomic instability, nutritional intake and growth signaling, to name a few. The objective of this Point-of-View is to highlight recent progress on the "loss of heterochromatin" model of aging and to propose that epigenetic changes contributing to global heterochromatin loss may underlie the various cellular processes associated with aging.
Collapse
Affiliation(s)
- Amy Tsurumi
- Department of Epidemiology, Harvard School of Public Health, Boston, MA, USA
| | | |
Collapse
|
142
|
Delayed paternal age of reproduction in humans is associated with longer telomeres across two generations of descendants. Proc Natl Acad Sci U S A 2012; 109:10251-6. [PMID: 22689985 DOI: 10.1073/pnas.1202092109] [Citation(s) in RCA: 136] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Telomeres are repeating DNA sequences at the ends of chromosomes that protect and buffer genes from nucleotide loss as cells divide. Telomere length (TL) shortens with age in most proliferating tissues, limiting cell division and thereby contributing to senescence. However, TL increases with age in sperm, and, correspondingly, offspring of older fathers inherit longer telomeres. Using data and samples from a longitudinal study from the Philippines, we first replicate the finding that paternal age at birth is associated with longer TL in offspring (n = 2,023, P = 1.84 × 10(-6)). We then show that this association of paternal age with offspring TL is cumulative across multiple generations: in this sample, grandchildren of older paternal grandfathers at the birth of fathers have longer telomeres (n = 234, P = 0.038), independent of, and additive to, the association of their father's age at birth with TL. The lengthening of telomeres predicted by each year that the father's or grandfather's reproduction are delayed is equal to the yearly shortening of TL seen in middle-age to elderly women in this sample, pointing to potentially important impacts on health and the pace of senescent decline in tissues and systems that are cell-replication dependent. This finding suggests a mechanism by which humans could extend late-life function as average age at reproduction is delayed within a lineage.
Collapse
|
143
|
Abstract
Progressive DNA damage and mitochondrial decline are both considered to be prime instigators of natural ageing. Traditionally, these two pathways have been viewed largely in isolation. However, recent studies have revealed a molecular circuit that directly links DNA damage to compromised mitochondrial biogenesis and function via p53. This axis of ageing may account for both organ decline and disease development associated with advanced age and could illuminate a path for the development of relevant therapeutics.
Collapse
|
144
|
Lee J, Sandford AJ, Connett JE, Yan J, Mui T, Li Y, Daley D, Anthonisen NR, Brooks-Wilson A, Man SFP, Sin DD. The relationship between telomere length and mortality in chronic obstructive pulmonary disease (COPD). PLoS One 2012; 7:e35567. [PMID: 22558169 PMCID: PMC3338848 DOI: 10.1371/journal.pone.0035567] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Accepted: 03/18/2012] [Indexed: 11/18/2022] Open
Abstract
Some have suggested that chronic obstructive pulmonary disease (COPD) is a disease of accelerated aging. Aging is characterized by shortening of telomeres. The relationship of telomere length to important clinical outcomes such as mortality, disease progression and cancer in COPD is unknown. Using quantitative polymerase chain reaction (qPCR), we measured telomere length of peripheral leukocytes in 4,271 subjects with mild to moderate COPD who participated in the Lung Health Study (LHS). The subjects were followed for approximately 7.5 years during which time their vital status, FEV(1) and smoking status were ascertained. Using multiple regression methods, we determined the relationship of telomere length to cancer and total mortality in these subjects. We also measured telomere length in healthy "mid-life" volunteers and patients with more severe COPD. The LHS subjects had significantly shorter telomeres than those of healthy "mid-life" volunteers (p<.001). Compared to individuals in the 4(th) quartile of relative telomere length (i.e. longest telomere group), the remaining participants had significantly higher risk of cancer mortality (Hazard ratio, HR, 1.48; p = 0.0324) and total mortality (HR, 1.29; p = 0.0425). Smoking status did not make a significant difference in peripheral blood cells telomere length. In conclusion, COPD patients have short leukocyte telomeres, which are in turn associated increased risk of total and cancer mortality. Accelerated aging is of particular relevance to cancer mortality in COPD.
Collapse
Affiliation(s)
- Jee Lee
- The Providence Heart and Lung Institute at St. Paul's Hospital, The UBC James Hogg Research Centre & Department of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Andrew J. Sandford
- The Providence Heart and Lung Institute at St. Paul's Hospital, The UBC James Hogg Research Centre & Department of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - John E. Connett
- Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Jin Yan
- The Providence Heart and Lung Institute at St. Paul's Hospital, The UBC James Hogg Research Centre & Department of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Tammy Mui
- The Providence Heart and Lung Institute at St. Paul's Hospital, The UBC James Hogg Research Centre & Department of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Yuexin Li
- The Providence Heart and Lung Institute at St. Paul's Hospital, The UBC James Hogg Research Centre & Department of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Denise Daley
- The Providence Heart and Lung Institute at St. Paul's Hospital, The UBC James Hogg Research Centre & Department of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Angela Brooks-Wilson
- Canada's Michael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
| | - S. F. Paul Man
- The Providence Heart and Lung Institute at St. Paul's Hospital, The UBC James Hogg Research Centre & Department of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Don D. Sin
- The Providence Heart and Lung Institute at St. Paul's Hospital, The UBC James Hogg Research Centre & Department of Medicine, The University of British Columbia, Vancouver, British Columbia, Canada
- * E-mail:
| |
Collapse
|
145
|
Zahnreich S, Krunic D, Melnikova L, Szejka A, Drossel B, Sabatier L, Durante M, Ritter S, Fournier C. Duplicated chromosomal fragments stabilize shortened telomeres in normal human IMR-90 cells before transition to senescence. J Cell Physiol 2012; 227:1932-40. [PMID: 21732364 DOI: 10.1002/jcp.22921] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
To assess why during in vitro aging of fibroblasts the maintenance of chromosomal stability is effective or occasionally fails, a detailed cytogenetic analysis was performed in normal human IMR-90 fetal lung fibroblasts. The onset of senescence was inferred from proliferation activity, expression pattern of cell cycle regulating proteins, activity of β-galactosidase, and morphological features. Over the period of proliferation, a moderate increase of non-transmissible structural chromosomal aberrations was observed. In addition, using fluorescence in situ hybridization (mFISH and mBAND) techniques, we detected clonally expanding translocations in up to 70% of the analyzed metaphases, all involving one homolog of chromosome 9 as an acceptor. Notably, chromosomes are randomly involved as donor-chromosomes of the translocated terminal acentric fragments. These fragments result from duplication because the donor chromosomes are apparently unchanged. Interstitial telomeric signals were detectable at fusion sites, most likely belonging to chromosome 9. Quantitative fluorescence in situ hybridization (QFISH) detecting telomere sequences, followed by mFISH technique revealed that already in young cells the respective telomeres of one chromosome 9 were particularly short. For the first time, we have observed dysfunctional telomeres of one specific chromosome in normal human cells that have been stabilized by duplicated terminal sequences.
Collapse
Affiliation(s)
- Sebastian Zahnreich
- Biophysics Department, GSI Helmholtz Center for Heavy Ion Research, Darmstadt, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
146
|
Xu L, Xu Z, Shang Y, Feng S, Zhou X. Structural polymorphism of human telomere G-quadruplex induced by a pyridyl carboxamide molecule. Bioorg Med Chem Lett 2012; 22:2988-92. [DOI: 10.1016/j.bmcl.2012.02.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Revised: 02/09/2012] [Accepted: 02/13/2012] [Indexed: 01/02/2023]
|
147
|
Stability and free energy calculation of LNA modified quadruplex: a molecular dynamics study. J Comput Aided Mol Des 2012; 26:289-99. [PMID: 22456858 DOI: 10.1007/s10822-012-9548-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Accepted: 01/23/2012] [Indexed: 10/28/2022]
Abstract
Telomeric ends of chromosomes, which comprise noncoding repeat sequences of guanine-rich DNA, which are the fundamental in protecting the cell from recombination and degradation. Telomeric DNA sequences can form four stranded quadruplex structures, which are involved in the structure of telomere ends. The formation and stabilization of telomeric quadruplexes has been shown to inhibit the activity of telomerase, thus establishing telomeric DNA quadrulex as an attractive target for cancer therapeutic intervention. Molecular dynamic simulation offers the prospects of detailed description of the dynamical structure with ion and water at molecular level. In this work we have taken a oligomeric part of human telomeric DNA, d(TAGGGT) to form different monomeric quadruplex structures d(TAGGGT)₄. Here we report the relative stabilities of these structures under K⁺ ion conditions and binding interaction between the strands, as determined by molecular dynamic simulations followed by energy calculation. We have taken locked nucleic acid (LNA) in this study. The free energy molecular mechanics Poission Boltzman surface area calculations are performed for the determination of most stable complex structure between all modified structures. We calculated binding free energy for the combination of different strands as the ligand and receptor for all structures. The energetic study shows that, a mixed hybrid type quadruplex conformation in which two parallel strands are bind with other two antiparallel strands, are more stable than other conformations. The possible mechanism for the inhibition of the cancerous growth has been discussed. Such studies may be helpful for the rational drug designing.
Collapse
|
148
|
Larsen SA, Kassem M, Rattan SI. Glucose metabolite glyoxal induces senescence in telomerase-immortalized human mesenchymal stem cells. Chem Cent J 2012; 6:18. [PMID: 22424056 PMCID: PMC3325881 DOI: 10.1186/1752-153x-6-18] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Accepted: 03/17/2012] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Various by-products of the cellular metabolism, such as reactive carbonyl species (RCS) are potentially harmful to cells and tissues, and play a role in many physiological and pathological processes. Among various RCS is the highly reactive dicarbonyl glyoxal (GO), which is a natural physiological metabolite produced by the auto-oxidation of glucose, and can form covalent adducts known as advanced glycation endproducts (AGE). We have previously reported that GO accelerates ageing and causes premature senescence in normal human skin fibroblasts. RESULTS Using a bone marrow-derived telomerase-immortalised mesenchymal stem cell line hMSC-TERT we have observed that an exposure of cells to 0.75 mM and 1 mM GO induces irreversible cellular senescence within 3 days. Induction of senescence in hMSC-TERT was demonstrated by a variety of markers, including characteristic cell morphology and enlargement, vacuolisation, multinucleation, induction of senescence associated β-galactosidase, cell cycle arrest, and increased levels of a cell cycle inhibitor p16. These changes were accompanied by increased extent of DNA breaks as measured by the comet assay, and increased levels of the AGE product, carboxymethyl-lysine (CML). Furthermore, the in vitro differentiation potential of hMSC-TERT to become functional osteoblasts was highly reduced in GO-treated stem cells, as determined by alkaline phosphatase (ALP) activity and mineralized matrix (MM) formation. CONCLUSIONS The results of our study imply that an imbalanced glucose metabolism can reduce the functioning ability of stem cells in vivo both during ageing and during stem cell-based therapeutic interventions.
Collapse
Affiliation(s)
- Simon Asbjørn Larsen
- Laboratory of Cellular Ageing, Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark.
| | | | | |
Collapse
|
149
|
Telomeres and the nucleus. Semin Cancer Biol 2012; 23:116-24. [PMID: 22330096 DOI: 10.1016/j.semcancer.2012.02.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Revised: 02/01/2012] [Accepted: 02/02/2012] [Indexed: 01/08/2023]
Abstract
Telomeres are crucial for the maintenance of genome stability through "capping" of chromosome ends to prevent their recognition as double-strand breaks, thus avoiding end-to-end fusions or illegitimate recombination [1-3]. Similar to other genomic regions, telomeres participate to the nuclear architecture while being highly mobile. The interaction of telomeres with nuclear domains or compartments greatly differs not only between organisms but also between cells within the same organism. It is also expected that biological processes like replication, repair or telomere elongation impact the distribution of chromosome extremities within the nucleus, as they probably do with other regions of the genome. Pathological processes such as cancer induce profound changes in the nuclear architecture, which also affects telomere dynamics and spatial organization. Here we will expose our present knowledge on the relationship between telomeres and nuclear architecture and on how this relationship is affected by normal or abnormal telomere metabolisms.
Collapse
|
150
|
Lee YS, Tae K, Lee SH, Cho SH, Jeong JH, Min HJ, Ji YB. Change of telomerase activity in peripheral whole blood of head and neck squamous cell carcinoma patients before and after surgery: a pilot study. Clin Transl Oncol 2012; 13:747-53. [PMID: 21975338 DOI: 10.1007/s12094-011-0727-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The purpose of this study was to evaluate telomerase activity in peripheral whole blood from head and neck squamous cell carcinoma (HNSCC) patients as a biomarker for diagnosis of HNSCC or detection of recurrence during follow-up. MATERIALS AND METHODS Telomerase activity was measured from peripheral whole blood extracts by telomerase repeat amplification protocol (TRAP) in HNSCC patients before and after surgery and in a control group. Sixty-two HNSCC patients and 42 control subjects were included. RESULTS Telomerase activity was found in 41 out of 62 (66.1%) HNSCC patients before surgery and in 8 out of 42 (19.0%) controls (p<0.001). Among 41 HNSCC patients who showed positive telomerase activity before surgery, 32 (78.1%) showed a conversion of telomerase activity to negative after surgery. In follow-up, 6 out of 8 (75%) showed conversion of telomerase activity from negative to positive after recurrence. Telomerase activity was changed to negative in 4 out of 6 (66%) recurred patients with positive telomerase activity after second surgery. CONCLUSION The telomerase activity in peripheral whole blood extracts of HNSCC patients might be a useful biomarker for detecting recurrence after treatment. Further study with larger sample size using a more sensitive detection method of telomerase activity is necessary to verify these results.
Collapse
Affiliation(s)
- Y S Lee
- Department of Otolaryngology, Head and Neck Surgery, College of Medicine, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul, South Korea
| | | | | | | | | | | | | |
Collapse
|