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RNAPol2 accounts for tumor cells liability to JQ1

ABSTRACT: RNAPol2 accounts for tumor cells liability to JQ1

PROVIDER: PRJNA306755 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR3048090.fastq.gz	Fastqsanger.gz
	SRR3048100.fastq.gz	Fastqsanger.gz
	SRR3048091.fastq.gz	Fastqsanger.gz
	SRR3048101.fastq.gz	Fastqsanger.gz
	SRR3048092.fastq.gz	Fastqsanger.gz

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RNAPol2 accounts for tumor cells liability to JQ1

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JQ1 treatment of germ cell cancer cells induces differentiation, apoptosis and cell cycle arrest

Project description:Type II testicular germ cell cancers (GCC) are the most frequently diagnosed tumors in young men (20 - 40 years) and are classified as seminoma or non-seminoma. GCCs are commonly treated by orchiectomy and chemo- or radiotherapy. However, a subset of metastatic non-seminomas display only incomplete remission or relapse and require novel treatment options. Recent studies have shown effective application of the small-molecule inhibitor JQ1 in tumor therapy, which interferes with the function of bromodomain and extra-terminal (BET)-proteins. Here, we demonstrate that upon JQ1 doses ≥ 250 nM GCC cell lines and Sertoli cells display compromised survival and induction of cell cycle arrest. JQ1 treated GCC cell lines display upregulation of genes indicative for DNA damage and a cellular stress response. Additionally, downregulation of pluripotency factors and induction of mesodermal differentiation was detected. GCCs xenografted in vivo showed a reduction in tumor size, proliferation and angiogenesis when subjected to JQ1 treatment. The combination of JQ1 and the histone deacetylase inhibitor romidepsin further enhanced the apoptotic effect in vitro and in vivo. Thus, we propose that JQ1 alone, or in combination with romidepsin may serve as a novel therapeutic option for GCCs.

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