EBF2 transcriptionally regulates brown adipogenesis via the histone reader DPF3 and the BAF chromatin remodeling complex

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

  • Suzanne N Shapira
  • Hee-Woong Lim
  • Sona Rajakumari
  • Alexander P Sakers
  • Jeff Ishibashi
  • Matthew J Harms
  • Kyoung-Jae Won
  • Patrick Seale

The transcription factor early B-cell factor 2 (EBF2) is an essential mediator of brown adipocyte commitment and terminal differentiation. However, the mechanisms by which EBF2 regulates chromatin to activate brown fat-specific genes in adipocytes were unknown. ChIP-seq (chromatin immunoprecipitation [ChIP] followed by deep sequencing) analyses in brown adipose tissue showed that EBF2 binds and regulates the activity of lineage-specific enhancers. Mechanistically, EBF2 physically interacts with the chromatin remodeler BRG1 and the BAF chromatin remodeling complex in brown adipocytes. We identified the histone reader protein DPF3 as a brown fat-selective component of the BAF complex that was required for brown fat gene programming and mitochondrial function. Loss of DPF3 in brown adipocytes reduced chromatin accessibility at EBF2-bound enhancers and led to a decrease in basal and catecholamine-stimulated expression of brown fat-selective genes. Notably, Dpf3 is a direct transcriptional target of EBF2 in brown adipocytes, thereby establishing a regulatory module through which EBF2 activates and also recruits DPF3-anchored BAF complexes to chromatin. Together, these results reveal a novel mechanism by which EBF2 cooperates with a tissue-specific chromatin remodeling complex to activate brown fat identity genes.

OriginalsprogEngelsk
TidsskriftGenes & Development
Vol/bind31
Udgave nummer7
Sider (fra-til)660-673
Antal sider14
ISSN0890-9369
DOI
StatusUdgivet - 1 apr. 2017
Eksternt udgivetJa

ID: 199325846