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Homo sapiens

ABSTRACT: Genome wide maps of E2F7 binding in IMR90 cells

PROVIDER: PRJNA173795 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR547510.fastq.gz	Fastqsanger.gz
	SRR547511.fastq.gz	Fastqsanger.gz
	SRR547512.fastq.gz	Fastqsanger.gz
	SRR547513.fastq.gz	Fastqsanger.gz
	SRR547514.fastq.gz	Fastqsanger.gz

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Project description:Oncogene-induced senescence is an anti-proliferative stress response program that acts as a fail-safe mechanism to limit oncogenic transformation and is regulated by the retinoblastoma protein (RB) and p53 tumor suppressor pathways. We identify the atypical E2F family member E2F7 as the only E2F transcription factor potently upregulated during oncogene-induced senescence, a setting where it acts in response to p53 as a direct transcriptional target. Once induced, E2F7 binds and represses a series of E2F target genes and cooperates with RB to efficiently promote cell cycle arrest and limit oncogenic transformation. Disruption of RB triggers a further increase in E2F7, which induces a second cell cycle checkpoint that prevents unconstrained cell division despite aberrant DNA replication. Mechanistically, E2F7 compensates for the loss of RB in repressing mitotic E2F target genes. Examination of E2F7 binding in either growing or senescent IMR90 cells with different hairpins.

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Project description:Oncogene-induced senescence is an anti-proliferative stress response program that acts as a fail-safe mechanism to limit oncogenic transformation and is regulated by the retinoblastoma protein (RB) and p53 tumor suppressor pathways. We identify the atypical E2F family member E2F7 as the only E2F transcription factor potently upregulated during oncogene-induced senescence, a setting where it acts in response to p53 as a direct transcriptional target. Once induced, E2F7 binds and represses a series of E2F target genes and cooperates with RB to efficiently promote cell cycle arrest and limit oncogenic transformation. Disruption of RB triggers a further increase in E2F7, which induces a second cell cycle checkpoint that prevents unconstrained cell division despite aberrant DNA replication. Mechanistically, E2F7 compensates for the loss of RB in repressing mitotic E2F target genes. Examination of p53 binding in either growing or senescent IMR90 cells with different hairpins.

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