Targeting the PPM1D phenotype; 2,4-bisarylthiazoles cause highly selective apoptosis in PPM1D amplified cell-lines
作者:Matthew D. Cheeseman、Amir Faisal、Sydonia Rayter、Olivier R. Barbeau、Andrew Kalusa、Maura Westlake、Rosemary Burke、Michael Swan、Rob van Montfort、Spiros Linardopoulos、Keith Jones
DOI:10.1016/j.bmcl.2014.05.067
日期:2014.8
The metal-dependent phosphatase PPM1D (WIP1) is an important oncogene in cancer, with over-expression of the protein being associated with significantly worse clinical outcomes. In this communication we describe the discovery and optimization of novel 2,4-bisarylthiazoles that phenocopy the knockdown of PPM1D, without inhibiting its phosphatase activity. These compounds cause growth inhibition at nanomolar concentrations, induce apoptosis, activate p53 and display impressive cell-line selectivity. The results demonstrate the potential for targeting phenotypes in drug discovery when tackling challenging targets or unknown mechanisms. (C) 2014 Published by Elsevier Ltd.