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Cancer associated fibroblasts play an important role in prostate cancer progression [ATAC-Seq]

ABSTRACT: To understand the cell types changes in prostate cancer progression, we carried out scRNA-seq of prostates from different kinds of genetic mouse model. After that, we found fibroblasts were changed obviously during prostate cancer progression. To confirm the function of the fibroblasts, LNCap was used to cocultured with all kinds of fibroblasts in control or ADT condition. To find out the key enviroment factors induced firoblast changing, RNA-seq, ATAC-seq and ChIP-seq of fibroblast in different treatment were taken. And finally, ADT, TGF-β1, and sox4 were confirmed as contributors of the stroma cell changes, which provided new strategies for prostate cancer treatment. scRNA-seq were used to find out the cell lines diverisity of prostate cancer progressiom. RNA-seq of LNCap cocultured with different fibroblasts were taken to identify the pathway fibroblasts induced. RNA-seq, ATAC-seq and ChIP-seq of fibroblasts were carried out to find out the reason of fibroblast changes.

ORGANISM(S): Mus musculus

PROVIDER: GSE213665 | GEO | 2023/06/22

REPOSITORIES: GEO

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Cancer associated fibroblasts play an important role in prostate cancer progression [RNA-Seq]

Project description:To understand the cell types changes in prostate cancer progression, we carried out scRNA-seq of prostates from different kinds of genetic mouse model. After that, we found fibroblasts were changed obviously during prostate cancer progression. To confirm the function of the fibroblasts, LNCap was used to cocultured with all kinds of fibroblasts in control or ADT condition. To find out the key enviroment factors induced firoblast changing, RNA-seq, ATAC-seq and ChIP-seq of fibroblast in different treatment were taken. And finally, ADT, TGF-β1, and sox4 were confirmed as contributors of the stroma cell changes, which provided new strategies for prostate cancer treatment. scRNA-seq were used to find out the cell lines diverisity of prostate cancer progressiom. RNA-seq of LNCap cocultured with different fibroblasts were taken to identify the pathway fibroblasts induced. RNA-seq, ATAC-seq and ChIP-seq of fibroblasts were carried out to find out the reason of fibroblast changes.

2023-06-22 | GSE213663 | GEO

Gene expression profile at single cell level of prostate from the different prostate cancer genetic mouse model [scRNA-Seq]

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Cancer associated fibroblasts play an important role in prostate cancer progression [ChIP-Seq]

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NCOR2 controls androgen deprivation therapy failure in advanced prostate cancer through re-wiring of the onco-epigenome [RNA-seq]

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NCOR2 controls androgen deprivation therapy failure in advanced prostate cancer through re-wiring of the onco-epigenome [ChIP-seq]

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NCOR2 controls androgen deprivation therapy failure in advanced prostate cancer through re-wiring of the onco-epigenome [CWR22_EPIC]

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Identification of Radiosensitivity Gene Signatures Induced by Enzalutamide in Prostate cancer cells

Project description:This study aimed to identify gene signatures induced by enzalutamide (ENZA) in hormone-sensitive (LNCaP) and hormone-resistant prostate cancer (PCa) cells. LNCaP and C4-2 cells were treated with ENZA alone or in combination with androgen deprivation therapy (ADT) and radiation (XRT). Through gene expression profiling, we identified that ENZA alone or in combination with ADT enhanced the effect the effect of XRT through immune-related pathways in LNCaP cells and metabolic pathways in C4-2 cells.Kaplan-Meier curve and Cox propotional hazard models showed that low expression of all the candidate genes except PTPRN2 were associated with tumor progression and recurrence in a PCa cohort.

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Hypoxia-independent downregulation of hypoxia inducible factor 1 targets by androgen deprivation therapy in prostate cancer.

Project description:Hypoxia inducible factor 1 (HIF1) has been shown to cooperate with the androgen receptor (AR) in activation of oncogenic pathways in prostate cancer (PCa). Here we hypothesized that HIF1 also plays a role in PCa response to androgen deprivation therapy (ADT). Comparison of gene expression profiles of androgen exposed (AE) and androgen deprived (AD) CWR22 PCa xenografts identified 596 upregulated and 748 downregulated genes after ADT. Gene ontology (GO) analysis of the differentially expressed genes showed significant enrichment of the biological processes cell proliferation, cell cycle and metabolism and suggested suppression of these processes after ADT. A set of 80 hypoxia-inducible genes were identified in 22Rv1 and LNCaP cell lines treated with hypoxia and showed considerable overlap (53%) with the downregulated genes. Immunostaining of the hypoxia marker pimonidazole showed no difference between AE- and AD-tumors. Comparison of the differentially expressed genes with lists of 1115 direct AR- and 276 direct HIF1-target genes identified 138 AR- and 40 HIF1-targets that were regulated after ADT, including six shared AR- and HIF1-targets for which downregulation was confirmed with RT-PCR. Most HIF1-targets were downregulated and included in the significant biological processes and the set of hypoxia-inducible genes. The downregulation of HIF1-targets was consistent with decreased HIF1A immunostaining in AD- compared to AE-tumors (p=0.002). A decrease in HIF1A immunostaining after ADT was also demonstrated in a cohort of 35 PCa patients (p<0.001). These data suggest suppressed HIF1-signaling after ADT and a shared role of HIF1 and AR in the regressive phase of PCa after ADT. Prostate cancer xenografts were subjected to adrogen deprivation therapy and analysed with regard to changes in gene expressions. Cell culture experiments were performed to generate prostate cancer specific gene lists associated with hypoxia.

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