Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA119605 | ENA |
REPOSITORIES: ENA
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Project description:To identify molecular singnal alterations between androgen dependent prostate cancer and castration resistant prostate cancer, we performed interspecies comparative microarray analyses using RNAs prepared from uncastrasion and castration tumor from LNCAP Orhotopic xenograft models of prostate cancer. microarray data from uncastrasion and castration tumor revealed that the gene expression profile is most significantly altered in between androgen dependent prostate cancer and castration resistant prostate cancer. Comparative analyses of LNCAP Orhotopic xenograft models of prostate cancer showed that genes involved in androgen dependent and androgen independent tumor were significantly altered.
2013-04-20 | GSE46218 | GEO
Project description:To identify molecular singnal alterations between androgen dependent prostate cancer and castration resistant prostate cancer, we performed interspecies comparative microarray analyses using RNAs prepared from uncastrasion and castration tumor from LNCAP Orhotopic xenograft models of prostate cancer. microarray data from uncastrasion and castration tumor revealed that the gene expression profile is most significantly altered in between androgen dependent prostate cancer and castration resistant prostate cancer. Comparative analyses of LNCAP Orhotopic xenograft models of prostate cancer showed that genes involved in androgen dependent and androgen independent tumor were significantly altered. We prepared RNA samples from 4 samples uncastrasion and 4 samples castration tumors from LNCAP Orhotopic xenograft models of prostate cancer . High-quality RNA samples were subjected to microarray analysis using the Affymetrix Human Gene 2.0 ST platform, and only those results that passed examinations for quality assurance and quality control of the Human Gene 2.0 ST arrays were retrieved. In total, we obtained gene expression profiles from the following samples: 4 samples uncastrasion and 4 samples castration tumors
2013-04-20 | E-GEOD-46218 | biostudies-arrayexpress
Project description:Analysis of bone metastases tissue from castration-resistant prostate cancer patients at the RNA level in relation to expression of constitutively active androgen receptor variants termed AR-V7 and AR-V567es.
2011-06-02 | GSE29650 | GEO
Project description:aCGH experiment on cell-free DNA collected from the plasma of patients with castration-resistant prostate cancer. No replicates. castration-resistant prostate cancer vs male reference DNA
2015-03-09 | E-GEOD-61134 | biostudies-arrayexpress
Project description:Androgen deprivation is the mainstay of therapy for progressive prostate cancer. Despite initial and dramatic tumor inhibition, most men eventually fail therapy and die of metastatic castration-resistant (CR) disease. Here, we characterize the profound degree of genomic alteration found in CR tumors using array CGH, gene expression arrays, and FISH. By cluster analysis, we show that the similarity of the genomic profiles from primary and metastatic tumors is driven by the patient. Using data adjusted for this similarity, we identify numerous high-frequency alterations in the CR tumors, such as 8p loss and chromosome 7 and 8q gain. By integrating array CGH and expression array data, we reveal genes whose correlated values suggest they are relevant to prostate cancer biology. We find alterations that are significantly associated with the metastases of specific organ sites, and others with CR tumors versus the tumors of patients with localized prostate cancer, not treated with androgen deprivation. Within the high-frequency sites of loss in CR metastases, we find an over-representation of genes involved in cellular lipid metabolism, including PTEN. Finally, using FISH we verify the presence of a gene fusion between TMPRSS2 and ERG suggested by chromosome-21 deletions detected by array CGH. We find the fusion in 54% of our CR tumors, and 81% of the fusion-positive tumors contain cells with multiple copies of the fusion. Our investigation lays the foundation for a better understanding of and possible therapeutic targets for CR disease, the poorly responsive and final stage of prostate cancer. The aim of this study was to characterize the genomic changes identified in a set of matched castrate-resistant primary and metastatic prostate cancers. Tumor cells were isolated by laser-capture microdissection from 14 patients, a total of 54 tumor samples. LCM capture samples were isolated from multiple metastastases from all but one patient from whom a single metastasis was available. Primary prostate tumor samples were collected from 12 patients. DNA was amplified by either ligation-mediated PCR (LMP) or WGA (Sigma-Aldrich, St. Louis, MO, USA). Reference DNA was isolated from peripheral blood from a single female individual.
2010-05-22 | E-GEOD-18259 | biostudies-arrayexpress
Project description:Peripheral blood from 62 men with castration resistant prostate cancer was collected between 8/2006 and 6/2008. A panel of 168 inflammation-related and prostate cancer related genes was assessed with quantitative PCR to assess biomarkers predictive of survival. qPCR profiling of whole blood from patients with castration-resistant prostate cancer.
2013-04-02 | E-GEOD-45705 | biostudies-arrayexpress
Project description:PB-Cre/Pten/Smad4 is a transgenic mouse model of metastatic prostate adenocarcinoma (PMID: 21289624). To study the transcriptomic alterations associated with castration-resistant prostate cancer (CRPC), the PB-Cre/Pten/Smad4 males with established prostate cancer were treated with surgical castration followed by enzalutamide-admixed diet. After about 4 weeks, dorsolateral prostate (DLP) lobes of treatment-naïve prostate tumors (N=2) and CRPC tumors (N=3) were harvested and extracted for RNA purification and microarray profiling. To further study the transcriptomic changes associated with lung metastases of the PB-Cre/Pten/Smad4/mTmG CRPC model, the PB-Cre/Pten/Smad4 males with established prostate cancer were treated with surgical castration followed by enzalutamide-admixed diet. About 3 months later, from one mouse anterior prostate (AP), dorsolateral prostate (DLP), ventral prostate (VP) and GFP+ lung metastasis nodules were each harvested for RNA purification and microarray profiling.
2020-12-18 | GSE163420 | GEO
Project description:Relatively little is known about how changes in gene copy number (CN) and gene CpG methylation interact to affect specific pathways in metastatic castration-resistant prostate cancer (CRPC). Oligonucleotide array comparative genomic hybridization (aCGH) was performed on DNA isolated from 15 metastatic CRPC samples. Commonly aberrant genes were evaluated in a confirmatory fashion using PCR, aCGH data from primary tumors, and existing CRPC expression data. Array-based comprehensive CpG methylation was assessed on the same sample set. A total of 495 genes (79 gained, 416 deleted) were CN aberrant in ?66% of the samples by aCGH, and 77 (9 amplified, 68 deleted) had statistically concordant expression including gain of AR and loss of PTEN and RB1. Significant CN differences were seen between the genomes of patients with AR-amplified and AR-unamplified tumors, including common loss of AR repressors in AR-unamplified tumors. The majority of CRPC samples were hypermethylated compared to benign prostate tissue. Simultaneous methylation and heterozygous gene deletion occurred in the tumor suppressor RB1 and in HSD17B2, responsible for testosterone metabolism. Establishment of a comprehensive methylation signature and coupling of epigenomic and structural analyses sheds light on the alterations that allow CRPC to circumvent hormonal therapy and may provide new drug targets for what is currently an incurable disease state. 15 tumor samples taken from 14 men with metastatic castration resistant prostate cancer were analyzed, including two samples from the same patient. No control samples were used for this experiment.
2011-12-06 | E-GEOD-34174 | biostudies-arrayexpress
Project description:Docetaxel and cabazitaxel are the chemotherapy agents used in castration-resistant prostate cancer. However, most patients eventually develop resistance to these treatments. The aim of the study was to identify key molecular genes and networks associated with taxanes resistance in 2 models of docetaxel-resistant and cabazitaxel-resistant castration-resistant prostate cancer cell lines.
2020-10-25 | GSE158494 | GEO
Project description:Prostate cancer is one of the major cancers that seriously affect men's health. It has high morbidity and high mortality, but there is still no ideal molecular markers for the diagnosis and prognosis of prostate cancer. Castration-resistant prostate cancer is associated with wide variations in survival. To determine whether differentially expressed circRNAs in plasma exosomes can be used as a novel biomarker for castration-resistant prostate cancer prognosis, we performed high-throughput circRNA sequencing on 15 pairs of plasma exosomes from 30 metastatic castration-resistant prostate cancer patients, with or without early progression, to screen differentially expressed circRNAs.
2023-04-05 | GSE125256 | GEO