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- Author: David E Neal x
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Department of Urology Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
Dame Roma Mitchell Cancer Research Laboratories Faculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, Australia
Department of Oncology University of Cambridge, Cambridge CB2 2QQ, UK
Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UK
Department of Urology Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
Dame Roma Mitchell Cancer Research Laboratories Faculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, Australia
Department of Oncology University of Cambridge, Cambridge CB2 2QQ, UK
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Department of Urology Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
Dame Roma Mitchell Cancer Research Laboratories Faculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, Australia
Department of Oncology University of Cambridge, Cambridge CB2 2QQ, UK
Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UK
Department of Urology Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
Dame Roma Mitchell Cancer Research Laboratories Faculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, Australia
Department of Oncology University of Cambridge, Cambridge CB2 2QQ, UK
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Department of Urology Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
Dame Roma Mitchell Cancer Research Laboratories Faculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, Australia
Department of Oncology University of Cambridge, Cambridge CB2 2QQ, UK
Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UK
Department of Urology Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
Dame Roma Mitchell Cancer Research Laboratories Faculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, Australia
Department of Oncology University of Cambridge, Cambridge CB2 2QQ, UK
Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UK
Department of Urology Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
Dame Roma Mitchell Cancer Research Laboratories Faculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, Australia
Department of Oncology University of Cambridge, Cambridge CB2 2QQ, UK
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Department of Urology Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
Dame Roma Mitchell Cancer Research Laboratories Faculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, Australia
Department of Oncology University of Cambridge, Cambridge CB2 2QQ, UK
Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge CB2 0RE, UK
Department of Urology Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
Dame Roma Mitchell Cancer Research Laboratories Faculty of Health Sciences, School of Medicine, The University of Adelaide, Level 4, Hanson Institute Building, DX Number 650 801, Adelaide, South Australia 5000, Australia
Department of Oncology University of Cambridge, Cambridge CB2 2QQ, UK
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Prostate cancer is the commonest, non-cutaneous cancer in men. At present, there is no cure for the advanced, castration-resistant form of the disease. Estrogen has been shown to be important in prostate carcinogenesis, with evidence resulting from epidemiological, cancer cell line, human tissue and animal studies. The prostate expresses both estrogen receptor alpha (ERA) and estrogen receptor beta (ERB). Most evidence suggests that ERA mediates the harmful effects of estrogen in the prostate, whereas ERB is tumour suppressive, but trials of ERB-selective agents have not translated into improved clinical outcomes. The role of ERB in the prostate remains unclear and there is increasing evidence that isoforms of ERB may be oncogenic. Detailed study of ERB and ERB isoforms in the prostate is required to establish their cell-specific roles, in order to determine if therapies can be directed towards ERB-dependent pathways. In this review, we summarise evidence on the role of ERB in prostate cancer and highlight areas for future research.
Biomarker Initiative, Cancer Research UK Cambridge Institute, Robinson Way, Cambridge, UK
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Biomarker Initiative, Cancer Research UK Cambridge Institute, Robinson Way, Cambridge, UK
Molecular Diagnostics and Therapeutics Group, University College London, London, UK
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Astra Zeneca, 2 Riverside, Granta Park, Cambridge, UK
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Astra Zeneca, 2 Riverside, Granta Park, Cambridge, UK
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Molecular Diagnostics and Therapeutics Group, University College London, London, UK
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Biomarker Initiative, Cancer Research UK Cambridge Institute, Robinson Way, Cambridge, UK
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Molecular and Computational Diagnostics Group, Cancer Research UK Cambridge Institute, Robinson Way, Cambridge, UK
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University College Hospital at Westmoreland Street, London, UK
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Nuffield Department of Surgical Sciences, John Radcliffe Hospital, Headington, Oxford, UK
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Biomarker Initiative, Cancer Research UK Cambridge Institute, Robinson Way, Cambridge, UK
Molecular Diagnostics and Therapeutics Group, University College London, London, UK
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Due to increased sensitivity, the expression of circulating nucleotides is rapidly gaining popularity in cancer diagnosis. Whole blood mRNA has been used in studies on a number of cancers, most notably two separate studies that used whole blood mRNA to define non-overlapping signatures of prostate cancer that has become castration independent. Prostate cancer is known to rely on androgens for initial growth, and there is increasing evidence on the importance of the androgen axis in advanced disease. Using whole blood mRNA samples from patients with prostate cancer, we have identified the four-gene panel of FAM129A, MME, KRT7 and SOD2 in circulating mRNA that are differentially expressed in a discovery cohort of metastatic samples. Validation of these genes at the mRNA and protein level was undertaken in additional cohorts defined by risk of relapse following surgery and hormone status. All the four genes were downregulated at the mRNA level in the circulation and in primary tissue, but this was not always reflected in tissue protein expression. MME demonstrated significant differences in the hormone cohorts, whereas FAM129A is downregulated at the mRNA level but is raised at the protein level in tumours. Using published ChIP-seq data, we have demonstrated that this may be due to AR binding at the FAM129A and MME loci in multiple cell lines. These data suggest that whole blood mRNA of androgen-regulated genes has the potential to be used for diagnosis and monitoring of prostate cancer.
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Cancer Research UK Cambridge Institute, Division of Genetics and Epidemiology, Department of Biological Sciences and School of Medicine, Royal Marsden NHS Foundation Trust, Departments of Pathology, Urology, Surgical Oncology, University of Cambridge, Cambridge, CB2 0RE, UK
Cancer Research UK Cambridge Institute, Division of Genetics and Epidemiology, Department of Biological Sciences and School of Medicine, Royal Marsden NHS Foundation Trust, Departments of Pathology, Urology, Surgical Oncology, University of Cambridge, Cambridge, CB2 0RE, UK
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Cancer Research UK Cambridge Institute, Division of Genetics and Epidemiology, Department of Biological Sciences and School of Medicine, Royal Marsden NHS Foundation Trust, Departments of Pathology, Urology, Surgical Oncology, University of Cambridge, Cambridge, CB2 0RE, UK
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Cancer Research UK Cambridge Institute, Division of Genetics and Epidemiology, Department of Biological Sciences and School of Medicine, Royal Marsden NHS Foundation Trust, Departments of Pathology, Urology, Surgical Oncology, University of Cambridge, Cambridge, CB2 0RE, UK
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Cancer Research UK Cambridge Institute, Division of Genetics and Epidemiology, Department of Biological Sciences and School of Medicine, Royal Marsden NHS Foundation Trust, Departments of Pathology, Urology, Surgical Oncology, University of Cambridge, Cambridge, CB2 0RE, UK
Cancer Research UK Cambridge Institute, Division of Genetics and Epidemiology, Department of Biological Sciences and School of Medicine, Royal Marsden NHS Foundation Trust, Departments of Pathology, Urology, Surgical Oncology, University of Cambridge, Cambridge, CB2 0RE, UK
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Prostate cancer is the most common cancer in men, resulting in over 10 000 deaths/year in the UK. Sequencing and copy number analysis of primary tumours has revealed heterogeneity within tumours and an absence of recurrent founder mutations, consistent with non-genetic disease initiating events. Using methylation profiling in a series of multi-focal prostate tumours, we identify promoter methylation of the transcription factor HES5 as an early event in prostate tumourigenesis. We confirm that this epigenetic alteration occurs in 86–97% of cases in two independent prostate cancer cohorts (n=49 and n=39 tumour–normal pairs). Treatment of prostate cancer cells with the demethylating agent 5-aza-2′-deoxycytidine increased HES5 expression and downregulated its transcriptional target HES6, consistent with functional silencing of the HES5 gene in prostate cancer. Finally, we identify and test a transcriptional module involving the AR, ERG, HES1 and HES6 and propose a model for the impact of HES5 silencing on tumourigenesis as a starting point for future functional studies.