Cancer-Selective Targeting of the NF-kappa B Survival Pathway with GADD45 beta/MKK7 Inhibitors

  • L Tornatore
  • , A Sandomenico
  • , D Raimondo
  • , C Low
  • , A Rocci
  • , C Tralau-Stewart
  • , D Capece
  • , D D'Andrea
  • , M Bua
  • , E Boyle
  • , Mark van Duin
  • , P Zoppoli
  • , A Jaxa-Chamiec
  • , AK Thotakura
  • , J Dyson
  • , BA Walker
  • , A Leonardi
  • , A Chambery
  • , Caroline Driessen
  • , Pieter Sonneveld
  • G Morgan, A Palumbo, A Tramontano, A Rahemtulla, M Ruvo, G Franzoso

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Abstract

Constitutive NF-B-K signaling promotes survival in multiple myeloma (MM) and other cancers; however, current NF-B-K-targeting strategies lack cancer cell specificity. Here, we identify the interaction between the NF-B-K-regulated antiapoptotic factor GADD45 beta and the JNK kinase MKK7 as a therapeutic target in MM. Using a drug-discovery strategy, we developed DTP3, a D-tripeptide, which disrupts the GADD45 beta/ MKK7 complex, kills MM cells effectively, and, importantly, lacks toxicity to normal cells. DTP3 has similar anticancer potency to the clinical standard, bortezomib, but more than 100-fold higher cancer cell specificity in vitro. Notably, DTP3 ablates rnyeloma xenografts in mice with no apparent side effects at the effective doses. Hence, cancer-selective targeting of the NF-KB pathway is possible and, at least for myeloma patients, promises a profound benefit.
Original languageUndefined/Unknown
Pages (from-to)495-508
Number of pages14
JournalCancer Cell
Volume26
Issue number4
DOIs
Publication statusPublished - 2014

Research programs

  • EMC MM-02-41-03

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