Discovery and Characterization of 2,5-Substituted Benzoic Acid Dual Inhibitors of the Anti-apoptotic Mcl-1 and Bfl-1 Proteins

  • Karson J. Kump
  • , Lei Miao
  • , Ahmed S.A. Mady
  • , Nurul H. Ansari
  • , Uttar K. Shrestha
  • , Yuting Yang
  • , Mohan Pal
  • , Chenzhong Liao
  • , Andrej Perdih
  • , Fardokht A. Abulwerdi
  • , Krishnapriya Chinnaswamy
  • , Jennifer L. Meagher
  • , Jacob M. Carlson
  • , May Khanna
  • , Jeanne A. Stuckey
  • , Zaneta Nikolovska-Coleska

Research output: Contribution to journalArticlepeer-review

Abstract

Anti-apoptotic Bcl-2 family proteins are overexpressed in a wide spectrum of cancers and have become well validated therapeutic targets. Cancer cells display survival dependence on individual or subsets of anti-apoptotic proteins that could be effectively targeted by multimodal inhibitors. We designed a 2,5-substituted benzoic acid scaffold that displayed equipotent binding to Mcl-1 and Bfl-1. Structure-based design was guided by several solved cocrystal structures with Mcl-1, leading to the development of compound 24, which binds both Mcl-1 and Bfl-1 with Ki values of 100 nM and shows appreciable selectivity over Bcl-2/Bcl-xL. The selective binding profile of 24 was translated to on-target cellular activity in model lymphoma cell lines. These studies lay a foundation for developing more advanced dual Mcl-1/Bfl-1 inhibitors that have potential to provide greater single agent efficacy and broader coverage to combat resistance in several types of cancer than selective Mcl-1 inhibitors alone.

Original languageEnglish (US)
Pages (from-to)2489-2510
Number of pages22
JournalJournal of Medicinal Chemistry
Volume63
Issue number5
DOIs
StatePublished - Mar 12 2020

ASJC Scopus subject areas

  • Molecular Medicine
  • Drug Discovery

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