Bromodomains as therapeutic targets

Expert Rev Mol Med. 2011 Sep 13;13:e29. doi: 10.1017/S1462399411001992.

Abstract

Acetylation of lysine residues is a post-translational modification with broad relevance to cellular signalling and disease biology. Enzymes that 'write' (histone acetyltransferases, HATs) and 'erase' (histone deacetylases, HDACs) acetylation sites are an area of extensive research in current drug development, but very few potent inhibitors that modulate the 'reading process' mediated by acetyl lysines have been described. The principal readers of ɛ-N-acetyl lysine (K(ac)) marks are bromodomains (BRDs), which are a diverse family of evolutionary conserved protein-interaction modules. The conserved BRD fold contains a deep, largely hydrophobic acetyl lysine binding site, which represents an attractive pocket for the development of small, pharmaceutically active molecules. Proteins that contain BRDs have been implicated in the development of a large variety of diseases. Recently, two highly potent and selective inhibitors that target BRDs of the BET (bromodomains and extra-terminal) family provided compelling data supporting targeting of these BRDs in inflammation and in an aggressive type of squamous cell carcinoma. It is likely that BRDs will emerge alongside HATs and HDACs as interesting targets for drug development for the large number of diseases that are caused by aberrant acetylation of lysine residues.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Acetylation
  • Animals
  • Histones / metabolism*
  • Humans
  • Molecular Targeted Therapy
  • Neoplasms / drug therapy*
  • Nuclear Proteins / antagonists & inhibitors
  • Nuclear Proteins / genetics
  • Nuclear Proteins / metabolism*
  • Protein Processing, Post-Translational*

Substances

  • Histones
  • Nuclear Proteins