Abstract
Twist is a key transcription activator of epithelial-mesenchymal transition (EMT). It remains unclear how Twist induces gene expression. Here we report a mechanism by which Twist recruits BRD4 to direct WNT5A expression in basal-like breast cancer (BLBC). Twist contains a "histone H4-mimic" GK-X-GK motif that is diacetylated by Tip60. The diacetylated Twist binds the second bromodomain of BRD4, whose first bromodomain interacts with acetylated H4, thereby constructing an activated Twist/BRD4/P-TEFb/RNA-Pol II complex at the WNT5A promoter and enhancer. Pharmacologic inhibition of the Twist-BRD4 association reduced WNT5A expression and suppressed invasion, cancer stem cell (CSC)-like properties, and tumorigenicity of BLBC cells. Our study indicates that the interaction with BRD4 is critical for the oncogenic function of Twist in BLBC.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 210-225 |
| Number of pages | 16 |
| Journal | Cancer Cell |
| Volume | 25 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 10 2014 |
| Externally published | Yes |
ASJC Scopus subject areas
- Oncology
- Cancer Research
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