Discovery of an MLLT1/3 YEATS Domain Chemical Probe

Angew Chem Int Ed Engl. 2018 Dec 10;57(50):16302-16307. doi: 10.1002/anie.201810617. Epub 2018 Nov 16.

Abstract

YEATS domain (YD) containing proteins are an emerging class of epigenetic targets in drug discovery. Dysregulation of these modified lysine-binding proteins has been linked to the onset and progression of cancers. We herein report the discovery and characterisation of the first small-molecule chemical probe, SGC-iMLLT, for the YD of MLLT1 (ENL/YEATS1) and MLLT3 (AF9/YEATS3). SGC-iMLLT is a potent and selective inhibitor of MLLT1/3-histone interactions. Excellent selectivity over other human YD proteins (YEATS2/4) and bromodomains was observed. Furthermore, our probe displays cellular target engagement of MLLT1 and MLLT3. The first small-molecule X-ray co-crystal structures with the MLLT1 YD are also reported. This first-in-class probe molecule can be used to understand MLLT1/3-associated biology and the therapeutic potential of small-molecule YD inhibitors.

Keywords: MLLT1; MLLT3; YEATS; chemical probes; epigenetics.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallography, X-Ray
  • Histones / metabolism
  • Humans
  • Molecular Docking Simulation
  • Neoplasm Proteins / antagonists & inhibitors*
  • Neoplasm Proteins / chemistry*
  • Neoplasm Proteins / metabolism
  • Nuclear Proteins / antagonists & inhibitors*
  • Nuclear Proteins / chemistry*
  • Nuclear Proteins / metabolism
  • Protein Domains
  • Protein Interaction Maps / drug effects
  • Small Molecule Libraries / chemistry*
  • Small Molecule Libraries / pharmacology
  • Transcription Factors / antagonists & inhibitors*
  • Transcription Factors / chemistry*
  • Transcription Factors / metabolism

Substances

  • Histones
  • MLLT1 protein, human
  • MLLT3 protein, human
  • Neoplasm Proteins
  • Nuclear Proteins
  • Small Molecule Libraries
  • Transcription Factors