Transcription factor cooperativity in early adipogenic hotspots and super-enhancers: * indicates first co-author

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

  • R Siersbæk*
  • Atefeh Rabiee*
  • R Nielsen
  • S Sidoli
  • S Traynor
  • A Loft
  • L La Cour Poulsen
  • A Rogowska-Wrzesinska
  • O Nørregaard Jensen
  • S Mandrup
It is becoming increasingly clear that transcription factors operate in complex networks through thousands of genomic binding sites, many of which bind several transcription factors. However, the extent and mechanisms of crosstalk between transcription factors at these hotspots remain unclear. Using a combination of advanced proteomics and genomics approaches, we identify ∼12,000 transcription factor hotspots (∼400 bp) in the early phase of adipogenesis, and we find evidence of both simultaneous and sequential binding of transcription factors at these regions. We demonstrate that hotspots are highly enriched in large super-enhancer regions (several kilobases), which drive the early adipogenic reprogramming of gene expression. Our results indicate that cooperativity between transcription factors at the level of hotspots as well as super-enhancers is very important for enhancer activity and transcriptional reprogramming. Thus, hotspots and super-enhancers constitute important regulatory hubs that serve to integrate external stimuli on chromatin.
OriginalsprogEngelsk
TidsskriftCell Reports
Sider (fra-til)1443-1455
ISSN2211-1247
DOI
StatusUdgivet - 2014
Eksternt udgivetJa

ID: 218225395