Selectivity, ligand deconstruction, and cellular activity analysis of a BPTF bromodomain inhibitor

  • Steven E. Kirberger
  • , Peter D. Ycas
  • , Jorden A. Johnson
  • , Chen Chen
  • , Michael F. Ciccone
  • , Rinette W.L. Woo
  • , Andrew K. Urick
  • , Huda Zahid
  • , Ke Shi
  • , Hideki Aihara
  • , Sean D. McAllister
  • , Mohammed Kashani-Sabet
  • , Junwei Shi
  • , Alex Dickson
  • , Camila O. Dos Santos
  • , William C.K. Pomerantz

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Bromodomain and PHD finger containing protein transcription factor (BPTF) is an epigenetic protein involved in chromatin remodelling and is a potential anticancer target. The BPTF bromodomain has one reported small molecule inhibitor (AU1, rac-1). Here, advances made on the structure-activity relationship of a BPTF bromodomain ligand are reported using a combination of experimental and molecular dynamics simulations leading to the active enatiomer (S)-1. Additionally, a ligand deconstruction analysis was conducted to characterize important pharmacophores for engaging the BPTF bromodomain. These studies have been enabled by a protein-based fluorine NMR approach, highlighting the versatility of the method for selectivity, ligand deconstruction, and ligand binding. To enable future analysis of biological activity, cell growth analyses in a panel of cancer cell lines were carried out using CRISPR-Cas9 and (S)-1 to identify cell-based model systems that are sensitive to BPTF inhibition.

Original languageEnglish (US)
Pages (from-to)2020-2027
Number of pages8
JournalOrganic and Biomolecular Chemistry
Volume17
Issue number7
DOIs
StatePublished - 2019

Bibliographical note

Publisher Copyright:
© The Royal Society of Chemistry 2019.

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