Disrupting the Interaction of BRD4 with Diacetylated Twist Suppresses Tumorigenesis in Basal-like Breast Cancer

  • Jian Shi
  • , Yifan Wang
  • , Lei Zeng
  • , Yadi Wu
  • , Jiong Deng
  • , Qiang Zhang
  • , Yiwei Lin
  • , Junlin Li
  • , Tiebang Kang
  • , Min Tao
  • , Elena Rusinova
  • , Guangtao Zhang
  • , Chi Wang
  • , Haining Zhu
  • , Jun Yao
  • , Yi Xin Zeng
  • , B. Mark Evers
  • , Ming Ming Zhou
  • , Binhua P. Zhou

Research output: Contribution to journalArticlepeer-review

422 Scopus citations

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 languageEnglish (US)
Pages (from-to)210-225
Number of pages16
JournalCancer Cell
Volume25
Issue number2
DOIs
StatePublished - Feb 10 2014
Externally publishedYes

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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