EBF2 determines and maintains brown adipocyte identity.
Cell Metab
; 17(4): 562-74, 2013 Apr 02.
Article
em En
| MEDLINE
| ID: mdl-23499423
ABSTRACT
The master transcription factor Pparγ regulates the general differentiation program of both brown and white adipocytes. However, it has been unclear whether Pparγ also controls fat lineage-specific characteristics. Here, we show that early B cell factor-2 (Ebf2) regulates Pparγ binding activity to determine brown versus white adipocyte identity. The Ebf DNA-binding motif was highly enriched within brown adipose-specific Pparγ binding sites that we identified by genome-wide ChIP-Seq. Of the Ebf isoforms, Ebf2 was selectively expressed in brown relative to white adipocytes and was bound at brown adipose-specific Pparγ target genes. When expressed in myoblasts or white preadipose cells, Ebf2 recruited Pparγ to its brown-selective binding sites and reprogrammed cells to a brown fat fate. Brown adipose cells and tissue from Ebf2-deficient mice displayed a loss of brown-specific characteristics and thermogenic capacity. Together, these results identify Ebf2 as a key transcriptional regulator of brown fat cell fate and function.
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1
Base de dados:
MEDLINE
Assunto principal:
Fatores de Transcrição Hélice-Alça-Hélice Básicos
/
Adipócitos Marrons
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article