Epigenetic Deregulation Across Chromosome 2q14.2 Differentiates Normal from Prostate Cancer and Provides a Regional Panel of Novel DNA Methylation Cancer Biomarkers

Previously, we showed that gene suppression commonly occurs across chromosome 2q14.2 in colorectal cancer, through a process of long-range epigenetic silencing (LRES), involving a combination of DNA methylation and repressive histone modifications. We now investigate whether LRES also occurs in pros...

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Veröffentlicht in:Cancer epidemiology, biomarkers & prevention biomarkers & prevention, 2011, Vol.20 (1), p.148-159
Hauptverfasser: DEVANEY, James, STIRZAKER, Clare, KENCH, James G, HENSHALL, Susan M, PE BENITO, Ruth, HAYNES, Anne-Maree, MAYOR, Regina, PEINADO, Miguel A, SUTHERLAND, Robert L, CLARK, Susan J, WENJIA QU, SONG, Jenny Z, STATHAM, Aaron L, PATTERSON, Kate I, HORVATH, Lisa G, TABOR, Bruce, COOLEN, Marcel W, HULF, Toby
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container_issue 1
container_start_page 148
container_title Cancer epidemiology, biomarkers & prevention
container_volume 20
creator DEVANEY, James
STIRZAKER, Clare
KENCH, James G
HENSHALL, Susan M
PE BENITO, Ruth
HAYNES, Anne-Maree
MAYOR, Regina
PEINADO, Miguel A
SUTHERLAND, Robert L
CLARK, Susan J
WENJIA QU
SONG, Jenny Z
STATHAM, Aaron L
PATTERSON, Kate I
HORVATH, Lisa G
TABOR, Bruce
COOLEN, Marcel W
HULF, Toby
description Previously, we showed that gene suppression commonly occurs across chromosome 2q14.2 in colorectal cancer, through a process of long-range epigenetic silencing (LRES), involving a combination of DNA methylation and repressive histone modifications. We now investigate whether LRES also occurs in prostate cancer across this 4-Mb region and whether differential DNA methylation of 2q14.2 genes could provide a regional panel of prostate cancer biomarkers. We used highly sensitive DNA methylation headloop PCR assays that can detect 10 to 25 pg of methylated DNA with a specificity of at least 1:1,000, and chromatin immunoprecipitation assays to investigate regional epigenetic remodeling across 2q14.2 in prostate cancer, in a cohort of 195 primary prostate tumors and 90 matched normal controls. Prostate cancer cells exhibit concordant deacetylation and methylation of histone H3 Lysine 9 (H3K9Ac and H3K9me2, respectively), and localized DNA hypermethylation of EN1, SCTR, and INHBB and corresponding loss of H3K27me3. EN1 and SCTR were frequently methylated (65% and 53%, respectively), whereas INHBB was less frequently methylated. Consistent with LRES in colorectal cancer, we found regional epigenetic remodeling across 2q14.2 in prostate cancer. Concordant methylation of EN1 and SCTR was able to differentiate cancer from normal (P < 0.0001) and improved the diagnostic specificity of GSTP1 methylation for prostate cancer detection by 26%. For the first time we show that DNA methylation of EN1 and SCTR promoters provide potential novel biomarkers for prostate cancer detection and in combination with GSTP1 methylation can add increased specificity and sensitivity to improve diagnostic potential.
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Urinary tract diseases ; Polymerase Chain Reaction - methods ; Prognosis ; Prostatic Neoplasms - diagnosis ; Prostatic Neoplasms - genetics ; Receptors, G-Protein-Coupled - genetics ; Receptors, Gastrointestinal Hormone - genetics ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization ; Tumors ; Tumors of the urinary system ; Urinary tract. 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Urinary tract diseases</subject><subject>Polymerase Chain Reaction - methods</subject><subject>Prognosis</subject><subject>Prostatic Neoplasms - diagnosis</subject><subject>Prostatic Neoplasms - genetics</subject><subject>Receptors, G-Protein-Coupled - genetics</subject><subject>Receptors, Gastrointestinal Hormone - genetics</subject><subject>Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization</subject><subject>Tumors</subject><subject>Tumors of the urinary system</subject><subject>Urinary tract. 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subjects Biological and medical sciences
Biomarkers, Tumor - genetics
Cell Line, Tumor
Chromatin Immunoprecipitation
Chromosomes, Human, Pair 2
DNA Methylation
Epigenesis, Genetic
Gene Expression Regulation, Neoplastic
Genes, Tumor Suppressor
Glutathione S-Transferase pi - genetics
Homeodomain Proteins - genetics
Humans
Inhibin-beta Subunits - genetics
Male
Medical sciences
Nephrology. Urinary tract diseases
Polymerase Chain Reaction - methods
Prognosis
Prostatic Neoplasms - diagnosis
Prostatic Neoplasms - genetics
Receptors, G-Protein-Coupled - genetics
Receptors, Gastrointestinal Hormone - genetics
Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
Tumors
Tumors of the urinary system
Urinary tract. Prostate gland
title Epigenetic Deregulation Across Chromosome 2q14.2 Differentiates Normal from Prostate Cancer and Provides a Regional Panel of Novel DNA Methylation Cancer Biomarkers
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