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Stable overexpression and knockdown of mutant- or wild type SPOP in VCaP prostate cancer cells

ABSTRACT: Stable overexpression and knockdown of mutant- or wild type SPOP in VCaP prostate cancer cells

PROVIDER: PRJEB28337 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR2752440.fastq.gz	Fastqsanger.gz
	ERR2752441.fastq.gz	Fastqsanger.gz
	ERR2752442.fastq.gz	Fastqsanger.gz
	ERR2752443.fastq.gz	Fastqsanger.gz
	ERR2752444.fastq.gz	Fastqsanger.gz

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Stable overexpression and knockdown of mutant- or wild type SPOP in VCaP prostate cancer cells

Project description:Purpose: Little is known about the interplay of driver mutations that never co-occur within the same cancer cells. The latter scenario has been identified in prostate cancer where recurrent gene fusions involving the oncogenic ERG transcription factor and point mutations in the ubiquitin ligase adaptor SPOP are strictly mutually exclusive. We show that ERG and mutant SPOP – even though oncogenic on their own – are together synthetic sick. Description: RNA-Seq of lentiviral-transduced VCaP cells with stable knockdown of wild type SPOP (2 x hairpins) or stable overexpression of either wild-type or mutant SPOP (Y87C, F102C, W131G).

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Identification of ZMYND11 binding sites in VCaP cells with stable overexpression of either mutant (Y87C) or wild-type SPOP.

Project description:SPOP is known to bind to serine/theronine-rich degrons on substrate proteins. We identified two degron sequences within the PWWP and MYND domain of ZMYND11, a novel SPOP substrate, and investigated whether ZMYND11 may contribute to the transcriptional output of mutant SPOP in VCaP cancer cells. We mapped the genomic occupancy of ZMYND11 in VCaP cells over-expressing either wild type SPOP or the recurrent SPOP-Y87C mutant by ChIPseq. Genomic binding sites in the SPOP-Y87C mutant were increased over wild type SPOP, consistent with the increased ZMYND11 expression levels in the former.

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Project description:SPOP is known to bind to serine/theronine-rich degrons on substrate proteins. We identified two degron sequences within the PWWP and MYND domain of ZMYND11, a novel SPOP substrate, and investigated whether ZMYND11 may contribute to the transcriptional output of mutant SPOP in VCaP cancer cells. Hence, we performed over-expression of degron-deficient ZMYND11 and degron-deficient ZMYND11 with W294A mutation in VCaP cells. While WT ZMYND11 constructs can be robustly over-expressed at the mRNA level, only the degron-deficient variants yielded a robost increase in ZMYND11 protein expression. Degron mutant-induced transcriptional perturbations partially mimicked SPOP mutant-induced gene expression changes, suggesting that ZMYND11 is sufficient to recapitulate certain features of mutant SPOP.

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Stable overexpression of either mutant- or wild type SPOP in presence/absence of ΔERG in LNCaP prostate cancer cells

Project description:Purpose: Little is known about the interplay of driver mutations that never co-occur within the same cancer cells. The latter scenario has been identified in prostate cancer where recurrent gene fusions involving the oncogenic ERG transcription factor and point mutations in the ubiquitin ligase adaptor SPOP are strictly mutually exclusive. We show that ERG and mutant SPOP – even though oncogenic on their own – are together synthetic sick. Description: LNCaP cells in presence/absence of stable ΔERG overexpression, were infected with lentivirus to overexpress either wild-type or mutant SPOP (Y87C, F102C, W131G, F133S).

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