Project description:Molecular and immune profiles linked to androgen response categories in metastatic castration-resistant prostate cancers (mCRPC)

| PRJNA954354 | ENA

Chromatin profiles classify castration-resistant prostate cancers suggesting therapeutic targets

Project description:Chromatin profiles classify castration-resistant prostate cancers suggesting therapeutic targets

| PRJNA818767 | ENA

Wheatear linked-read sequencing

Project description:Linked-read sequencing enables haplotype-resolved resequencing at population scale

| PRJEB38232 | ENA

Gene Expression in Castration-Resistant C4-2 Cells after AR Knockdown

2009-02-20 | GSE13332 | GEO

Gene Expression in Castration-Resistant C4-2 Cells after AR Knockdown

Project description:Prostate cancer is the most common, lethal malignancy in men. Although androgen withdrawal therapies are used to treat advanced disease, progression to a castration-resistant, end-stage is the usual outcome. In this study, the tested hypothesis was that the androgen receptor remains essential for the growth and viability of castration-resistant disease. Knocking down the androgen receptor in well-established tumors grown in castrated mice caused growth arrest, decreased serum PSA, and frequently regression and total eradication of tumors. Growth control of castration-resistant tumors appeared to be linked to the extent of androgen receptor knockdown, which triggers upregulation of many genes involved in apoptosis, cell cycle arrest, and inhibition of tumorigenesis and protein synthesis. Our findings provide proof of principle that in vivo knockdown of the androgen receptor is a viable therapeutic strategy to control and possibly eradicate prostate cancers that have progressed to the lethal castration-resistant state. C4-2 human prostate cancer cells stably expressing a tetracycline-inducible AR-targeted short hairpin RNA (shRNA) or scrambled shRNA were generated. These two cell lines were incubated in the absence of androgens with or without doxycycline hyclase (DOX). Comparison analysis of the gene expression profiles of C4-2 cells stably expressing AR shRNA + DOX and control cells (AR shRNA - DOX and scrambled shRNA Â± DOX) was conducted to identify differentially regulated genes due to AR knockdown after normalization and data filtering. Genes were considered to be significantly different if the expression in the induced AR shRNA + DOX cells was at least 1.7-fold greater or 1.7-fold less than that seen in the control cells, with P< 0.05.

2010-06-23 | E-GEOD-13332 | biostudies-arrayexpress

Structural Alterations Driving Castration-Resistant Prostate Cancer Revealed by Linked-Read Genome Sequencing.

Project description:Nearly all prostate cancer deaths are from metastatic castration-resistant prostate cancer (mCRPC), but there have been few whole-genome sequencing (WGS) studies of this disease state. We performed linked-read WGS on 23 mCRPC biopsy specimens and analyzed cell-free DNA sequencing data from 86 patients with mCRPC. In addition to frequent rearrangements affecting known prostate cancer genes, we observed complex rearrangements of the AR locus in most cases. Unexpectedly, these rearrangements include highly recurrent tandem duplications involving an upstream enhancer of AR in 70%-87% of cases compared with <2% of primary prostate cancers. A subset of cases displayed AR or MYC enhancer duplication in the context of a genome-wide tandem duplicator phenotype associated with CDK12 inactivation. Our findings highlight the complex genomic structure of mCRPC, nominate alterations that may inform prostate cancer treatment, and suggest that additional recurrent events in the non-coding mCRPC genome remain to be discovered.

| S-EPMC6046279 | biostudies-literature

Linked-Read Sequencing to Resolve Complex Structural Variants

Project description:Linked-Read Sequencing to Resolve Complex Structural Variants

| PRJNA516493 | ENA