Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA322532 | ENA |
REPOSITORIES: ENA
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Project description:To decipher the contribution of STAT3, IRF1 and PGAM5 to androgen-responsive gene expression, effect of siRNA-mediated silencing of STAT3, IRF1 and PGAM5 on expression of androgen-dependent genes was studied.
2017-05-01 | GSE81780 | GEO
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Project description:The ligand-activated androgen receptor is a transcription factor that drives prostate cancer growth. Blocking androgen-activation of androgen receptor via androgen deprivation therapy is the default treatment for metastatic prostate cancer. Despite initial remissions, androgen deprivation invariably fails and prostate cancer progresses to castration-recurrent disease, which still relies on aberrantly activated androgen receptor. Alternative approaches are needed to inhibit androgen receptor action in prostate cancer that has failed androgen deprivation therapy. Our laboratory has been exploring the therapeutic potential of a non-canonical androgen receptor signaling mechanism wherein androgen receptor stimulates another transcription factor, Serum Response Factor. Serum Response Factor-mediated androgen receptor action correlates with prostate cancer progression and is enriched in castration-recurrent prostate cancer. Inhibiting Serum Response Factor-dependent androgen receptor action may be an effective treatment strategy following failure of androgen deprivation therapy but remains poorly understood. We have recently isolated UPF1 and RCOR1 as putative novel mediators of Serum Response Factor-dependent androgen receptor action. Here, we perform RNA-Seq assays to determine the contribution of UPF1 and RCOR1 to the androgen response of prostate cancer cells.
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Project description:Galiellalactone (GL) is a fungal metabolite that presents antitumor and anti-inflammatory activities in vitro and in vivo. Previous studies have shown that GL targets NF-KB and STAT3 pathways and induces G2/M cell cycle arrest in androgen-insensitive prostate cancer cells. In this study, we show that GL-induced cell cycle arrest is independent of the NF-KB and STAT3 pathways in DU145 and PC-3 cells, and also that GL did not affect cell cycling in androgen-sensitive prostate cancer cell such as LNCaP and 22Rv1 cells. In addition, we showed confluence resistance to GL in DU145 cells. Using a SWATH proteomic approach we identified the down-regulation of Nucleolar and spindle associated protein 1 (NUSAP1) under DU145 confluence and in LNCaP cells. Also, the inhibition of NUSAP1 by siRNAs induced resistance to GL in DU145 cells, suggesting that NUSAP1 may be a target for GL and could be useful as biomarker for responsiveness of the antitumor activity of GL.
2019-01-14 | PXD010993 | Pride
Project description:Prostate cancer is the second most occurring cancer in men worldwide, and with the advances made with screening for prostate-specific antigen, it has been prone to early diagnosis and over-treatment. To better understand the mechanisms of tumorigenesis and possible treatment responses, we developed a mathematical model of prostate cancer which considers the major signalling pathways known to be deregulated. The model includes pathways such as androgen receptor, MAPK, Wnt, NFkB, PI3K/AKT, MAPK, mTOR, SHH, the cell cycle, the epithelial-mesenchymal transition (EMT), apoptosis and DNA damage pathways. The final model accounts for 133 nodes and 449 edges. We applied a methodology to personalise this Boolean model to molecular data to reflect the heterogeneity and specific response to perturbations of cancer patients, using TCGA and GDSC datasets.
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Project description:Investigation of androgen-regulated lncRNAs in prostate cancer cells
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