EBF2 determines and maintains brown adipocyte identity.
EBF2 determines and maintains brown adipocyte identity.
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DOI:
10.1016/j.cmet.2013.01.015
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发表时间:
2013-04-02
期刊:
影响因子:
29
通讯作者:
Seale P
中科院分区:
文献类型:
--
作者:
Rajakumari S;Wu J;Ishibashi J;Lim HW;Giang AH;Won KJ;Reed RR;Seale P
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 pre-adipose 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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