Copy number profile of human prostate cancer organoid lines using Agilent 1M aCGH platform
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE60612 | GEO | 2014/09/09
SECONDARY ACCESSION(S): PRJNA258649
REPOSITORIES: GEO
Similar Datasets
Project description:Advanced prostate cancer is a highly heterogenous disease with few in vitro models. We report generation of seven novel 3D organoid lines of patient-derived prostate cancer. We determine the copy number alterations of these lines using array CGH. They contain may classic alterations of prostate cancer such as lost of the short arm of chromosome 8 and gain of the long arm of chromosome 8. In addition, we found homozygous deleteion of tumor suppressor PTEN and CHD1 as well as the TMPRSS2-ERG interstitial deletion. Prostate cancer organoid lines, ~2 months after in vitro propagation, were used for profiling on Agilent 1M aCGH arrays per manufacturer's instructions. A pooled reference normal DNA was used as the reference.
2014-09-09 | E-GEOD-60612 | biostudies-arrayexpress
Project description:Deregulation of chromatin architecture is emerging as a critical feature of carcinogenesis, and genomic alterations in nucleosome remodelers are common in human cancer. Recurrent deletion of the chromatin remodeler CHD1 is among the most common alterations in prostate cancer, but its role as a tumor suppressor and the reasons for the tissue-specific nature of CHD1 deletion remain undefined. Here, we show that deletion of CHD1 drives prostate tumorigenesis and fundamentally reprograms the transcriptional program of the androgen receptor (AR), diverting AR towards an oncogenic transcriptional program and away from a growth suppressive transcriptome. Conditional deletion of Chd1 in mouse prostate resulted in prostate neoplasia in vivo, confirming CHD1 as a tumor suppressor in prostate tissue. In prostate cells, the interactome of chromatin-bound CHD1 was enriched for factors that regulate nuclear receptor function, and interrogation of the CHD1 cistrome revealed promoter-independent enrichment of CHD1 at sites specifically occupied by AR and its associated transcriptional regulators. Deletion of CHD1 resulted in a dramatic redistribution of AR across the genome, localizing AR to sites enriched for HOXB13, and depleting AR at AR-halfsite motifs, consistent with the AR cistrome and epigenetic marks in human prostate cancer samples. Furthermore, the CHD1 null AR cistrome was associated with a unique AR transcriptional signature, enriched for pro-oncogenic pathways and depleted for processes consistent with normal prostatic function. Collectively, these data implicate CHD1 as a prostate-specific tumor suppressor which constrains the oncogenic functions of AR though maintenance of a normal AR transcriptional program.
2019-07-18 | GSE123333 | GEO
Project description:Deregulation of chromatin architecture is emerging as a critical feature of carcinogenesis, and genomic alterations in nucleosome remodelers are common in human cancer. Recurrent deletion of the chromatin remodeler CHD1 is among the most common alterations in prostate cancer, but its role as a tumor suppressor and the reasons for the tissue-specific nature of CHD1 deletion remain undefined. Here, we show that deletion of CHD1 drives prostate tumorigenesis and fundamentally reprograms the transcriptional program of the androgen receptor (AR), diverting AR towards an oncogenic transcriptional program and away from a growth suppressive transcriptome. Conditional deletion of Chd1 in mouse prostate resulted in prostate neoplasia in vivo, confirming CHD1 as a tumor suppressor in prostate tissue. In prostate cells, the interactome of chromatin-bound CHD1 was enriched for factors that regulate nuclear receptor function, and interrogation of the CHD1 cistrome revealed promoter-independent enrichment of CHD1 at sites specifically occupied by AR and its associated transcriptional regulators. Deletion of CHD1 resulted in a dramatic redistribution of AR across the genome, localizing AR to sites enriched for HOXB13, and depleting AR at AR-halfsite motifs, consistent with the AR cistrome and epigenetic marks in human prostate cancer samples. Furthermore, the CHD1 null AR cistrome was associated with a unique AR transcriptional signature, enriched for pro-oncogenic pathways and depleted for processe consistent with normal prostatic function. Collectively, these data implicate CHD1 as a prostate-specific tumor suppressor which constrains the oncogenic functions of AR though maintenance of a normal AR transcriptional program.
2019-07-18 | GSE117430 | GEO
Project description:Deregulation of chromatin architecture is emerging as a critical feature of carcinogenesis, and genomic alterations in nucleosome remodelers are common in human cancer. Recurrent deletion of the chromatin remodeler CHD1 is among the most common alterations in prostate cancer, but its role as a tumor suppressor and the reasons for the tissue-specific nature of CHD1 deletion remain undefined. Here, we show that deletion of CHD1 drives prostate tumorigenesis and fundamentally reprograms the transcriptional program of the androgen receptor (AR), diverting AR towards an oncogenic transcriptional program and away from a growth suppressive transcriptome. Conditional deletion of Chd1 in mouse prostate resulted in prostate neoplasia in vivo, confirming CHD1 as a tumor suppressor in prostate tissue. In prostate cells, the interactome of chromatin-bound CHD1 was enriched for factors that regulate nuclear receptor function, and interrogation of the CHD1 cistrome revealed promoter-independent enrichment of CHD1 at sites specifically occupied by AR and its associated transcriptional regulators. Deletion of CHD1 resulted in a dramatic redistribution of AR across the genome, localizing AR to sites enriched for HOXB13, and depleting AR at AR-halfsite motifs, consistent with the AR cistrome and epigenetic marks in human prostate cancer samples. Furthermore, the CHD1 null AR cistrome was associated with a unique AR transcriptional signature, enriched for pro-oncogenic pathways and depleted for processe consistent with normal prostatic function. Collectively, these data implicate CHD1 as a prostate-specific tumor suppressor which constrains the oncogenic functions of AR though maintenance of a normal AR transcriptional program.
2019-07-18 | GSE117429 | GEO
Project description:Prostate cancer is the most common malignancy in men. Yet, the modest benefit of treatment highlights the unmet need for prognostic biomarkers in prostate cancer (1). Few large prostate oncogenome resources currently exist that combine the molecular and clinical outcome data necessary for prognostic discovery. To determine the extent to which genomic aberrations reflect the risk of prostate cancer-specific outcomes, we profiled more than 100 primary prostate cancers with long-term follow-up for genome-wide copy number alterations (CNA). We also updated the long-term clinical outcome (median 8 years) of an additional independent cohort of 181 primary prostate cancers that we previously profiled for CNA and expression changes (2). Together, we found that CNA burden across the genome, defined as the percent of the tumor genome affected by CNA, is prognostic for recurrence and metastasis in these two cohorts. This prognostic significance of CNA is independent of Gleason grade, a major existing histopathological prognostic variable in prostate cancer. Moreover, in intermediate-risk Gleason 7 prostate cancers that show a wide range of outcomes, CNA burden is also prognostic for biochemical recurrence, independent of prostate-specific antigen or nomogram score. CNA burden therefore has the potential to stratify patients by their risk of recurrence in an otherwise intermediate risk subpopulation. We further demonstrate that CNA burden can be established in diagnostic FFPE needle biopsies using low-input whole genome sequencing. Together, this work highlights the potential of oncogenomics to identify useful and clinically amenable prognostic factors that may inform prostate cancer outcome and treatment.
2014-06-30 | GSE54691 | GEO
Project description:Prostate cancer is the most common malignancy in men. Yet, the modest benefit of treatment highlights the unmet need for prognostic biomarkers in prostate cancer (1). Few large prostate oncogenome resources currently exist that combine the molecular and clinical outcome data necessary for prognostic discovery. To determine the extent to which genomic aberrations reflect the risk of prostate cancer-specific outcomes, we profiled more than 100 primary prostate cancers with long-term follow-up for genome-wide copy number alterations (CNA). We also updated the long-term clinical outcome (median 8 years) of an additional independent cohort of 181 primary prostate cancers that we previously profiled for CNA and expression changes (2). Together, we found that CNA burden across the genome, defined as the percent of the tumor genome affected by CNA, is prognostic for recurrence and metastasis in these two cohorts. This prognostic significance of CNA is independent of Gleason grade, a major existing histopathological prognostic variable in prostate cancer. Moreover, in intermediate-risk Gleason 7 prostate cancers that show a wide range of outcomes, CNA burden is also prognostic for biochemical recurrence, independent of prostate-specific antigen or nomogram score. CNA burden therefore has the potential to stratify patients by their risk of recurrence in an otherwise intermediate risk subpopulation. We further demonstrate that CNA burden can be established in diagnostic FFPE needle biopsies using low-input whole genome sequencing. Together, this work highlights the potential of oncogenomics to identify useful and clinically amenable prognostic factors that may inform prostate cancer outcome and treatment. Human prostate samples were profiled on Agilent 1M aCGH arrays per manufacturer's instructions. A pooled reference normal DNA was used as the reference.
2014-06-30 | E-GEOD-54691 | biostudies-arrayexpress
Project description:Common epithelial cancers are believed to become more aggressive through the accumulation of multiple independent molecular events that lead to the deregulation of cell signaling. However, the discovery that the majority of prostate cancers harbor gene fusions of the 5'-untranslated region of androgen regulated TMPRSS2 promoter with ETS transcription factor family members has brought this paradigm into question1,2. TMPRSS2-ERG gene fusion is the most common molecular sub-type of prostate cancer. Recent work suggests that the TMPRSS2-ERG fusion is associated with a more aggressive clinical phenotype3. In the most advanced castration resistant prostate cancers where the androgen receptor has been inactivated, the TMPRSS2-ERG fusion remains functionally active. Here we show compelling clinical and gene expression data supporting the existence of a TMPRSS2-ERG fusion prostate cancer subclass. Using expression array profiling on 455 primary prostate tumors, we identified an 87 gene expression signature, distinguishing TMPRSS2-ERG fusion prostate cancer as a discrete molecular entity. Computational analysis suggested that this fusion signature was associated with estrogen receptor signaling. Functional studies demonstrated regulation of the TMPRSS2-ERG fusion transcript by estrogenic compounds. These data identify a previously unrecognized mechanism for regulation of the TMPRSS2-ERG, even in the absence of a functional androgen receptor, and thus may have broader implications in the treatment of prostate cancer. Keywords: Prostate cancer, Expression array, Illumina, gene fusion, TMPRSS2, ERG, Signatures, Estrogen Test Cohort: 388 cases from the population based Swedish-Watchful Waiting cohort. The cohort consists of men with localized prostate cancer (clinical stage T1-T2, Mx, N0); Validation cohort: The PhysiciansM-bM-^@M-^Y Health Study (PHS) cohort included 116 US men diagnosed with incidental prostate cancer between 1983 and 2003; 455 cases were annotated for TMPRSS2-ERG fusion. Test Set: GSM208029 ... GSM208392 Validation Set: GSM208404 ... GSM208512
2008-05-27 | E-GEOD-8402 | biostudies-arrayexpress
Project description:TMPRSS2 is an androgen-regulated cell surface serine protease expressed predominantly in prostate epithelium. TMPRSS2 is expressed highly in localized high-grade prostate cancers and in the majority of human prostate cancer metastasis. Through the generation of mouse models with a targeted deletion of Tmprss2, we demonstrate that the activity of this protease regulates cancer cell invasion and metastasis to distant organs. By screening combinatorial peptide libraries we identified a spectrum of TMPRSS2 substrates that include pro-hepatocyte growth factor (HGF). HGF activated by TMPRSS2 promoted c-Met receptor tyrosine kinase signaling, and initiated a pro-invasive EMT phenotype. Chemical library screens identified a potent bioavailable TMPRSS2 inhibitor that suppressed prostate cancer metastasis in vivo. Together, these findings provide a mechanistic link between androgen-regulated signaling programs and prostate cancer metastasis that operate via context-dependent interactions with extracellular constituents of the tumor microenvironment. Custom mouse cDNA microarrays were used to measure transcript levels in microdissected anterior prostate tumors from Tmprss2+/+;TRAMP mice, Tmprss2-/-;TRAMP mice or strain-matched benign epithelium. All samples were laser-capture microdissected and total RNA isolated and amplified prior to hybridization against a reference pool of normal adult mouse tissues.
2014-09-09 | E-GEOD-58822 | biostudies-arrayexpress
Project description:Current knowledge of prostate cancer genomes is largely based on relatively small patient cohorts using single modality analysis platforms. Here we report concordant assessment of DNA copy number, mRNA and microRNA expression and focused exon resequencing in prostate tumors from 218 patients with primary or metastatic prostate cancer with a median of 5 years clinical follow-up, now made available as a public resource. Mutations in known, commonly mutated oncogenes and tumor suppressor genes such as PIK3CA, KRAS, BRAF and TP53 are present but generally rare. However, integrative analysis of mutations with copy number alterations (CNAs) and expression changes reveal alterations in the PI3K, RAS/RAF and androgen receptor (AR) pathways in nearly all metastatic samples and in a higher frequency of primary samples than previously suspected based on single-gene studies. Other new findings include evidence that the nuclear receptor coactivator NCOA2 functions as a driver oncogene in ~20 percent of primaries. Tumors with the androgen-driven TMPRSS2-ERG fusion were significantly associated with a small, previously unrecognized, prostate-specific 3p14 deletion that, through mRNA expression and resequencing analysis, implicates FOXP1, RYBP and SHQ1 as candidate cooperative tumor suppressors. Comparison of transcriptome and DNA copy number data from primary tumors for prognostic impact revealed that CNAs robustly define clusters of low- and high-risk disease beyond that achieved by Gleason score. In sum, this integrative genomic analysis of a substantial cohort of tumors clarifies the role of several known cancer pathways in prostate cancer, implicates several new ones, reveals a previously unappreciated role for CNAs in prognosis and provides a blueprint for clinical development of pathway inhibitors.
2010-06-24 | GSE21035 | GEO
Project description:Common epithelial cancers are believed to become more aggressive through the accumulation of multiple independent molecular events that lead to the deregulation of cell signaling. However, the discovery that the majority of prostate cancers harbor gene fusions of the 5'-untranslated region of androgen regulated TMPRSS2 promoter with ETS transcription factor family members has brought this paradigm into question1,2. TMPRSS2-ERG gene fusion is the most common molecular sub-type of prostate cancer. Recent work suggests that the TMPRSS2-ERG fusion is associated with a more aggressive clinical phenotype3. In the most advanced castration resistant prostate cancers where the androgen receptor has been inactivated, the TMPRSS2-ERG fusion remains functionally active. Here we show compelling clinical and gene expression data supporting the existence of a TMPRSS2-ERG fusion prostate cancer subclass. Using expression array profiling on 455 primary prostate tumors, we identified an 87 gene expression signature, distinguishing TMPRSS2-ERG fusion prostate cancer as a discrete molecular entity. Computational analysis suggested that this fusion signature was associated with estrogen receptor signaling. Functional studies demonstrated regulation of the TMPRSS2-ERG fusion transcript by estrogenic compounds. These data identify a previously unrecognized mechanism for regulation of the TMPRSS2-ERG, even in the absence of a functional androgen receptor, and thus may have broader implications in the treatment of prostate cancer. Keywords: Prostate cancer, Expression array, Illumina, gene fusion, TMPRSS2, ERG, Signatures, Estrogen
2008-05-28 | GSE8402 | GEO