E2F7 represses a network of oscillating cell cycle genes to control S-phase progression

Bart Westendorp, Michal Mokry, Marian J.A. Groot Koerkamp, Frank C.P. Holstege, Edwin Cuppen, Alain De Bruin

Onderzoeksoutput: Bijdrage aan tijdschriftArtikelpeer review

81 Citaten (Scopus)

Samenvatting

E2F transcription factors are known to be important for timely activation of G1/S and G2/M genes required for cell cycle progression, but transcriptional mechanisms for deactivation of cell cycle-regulated genes are unknown. Here, we show that E2F7 is highly expressed during mid to late S-phase, occupies promoters of G1/S-regulated genes and represses their transcription. ChIP-seq analysis revealed that E2F7 binds preferentially to genomic sites containing the TTCCCGCC motif, which closely resembles the E2F consensus site. We identified 89 target genes that carry E2F7 binding sites close to the transcriptional start site and that are directly repressed by short-term induction of E2F7. Most of these target genes are known to be activated by E2Fs and are involved in DNA replication, metabolism and DNA repair. Importantly, induction of E2F7 during G 0-G1/S resulted in S-phase arrest and DNA damage, whereas expression of E2F7 during G2/M failed to disturb cell cycle progression. These findings provide strong evidence that E2F7 directly controls the downswing of oscillating G1/S genes during S-phase progression.

Originele taal-2Engels
Pagina's (van-tot)3511-3523
Aantal pagina's13
TijdschriftNucleic Acids Research
Volume40
Nummer van het tijdschrift8
DOI's
StatusGepubliceerd - apr. 2012
Extern gepubliceerdJa

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