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  2. Structure-Guided Design of Highly Selective and Potent Covalent Inhibitors of ERK1/2

Structure-Guided Design of Highly Selective and Potent Covalent Inhibitors of ERK1/2

  • J Med Chem. 2015 Jun 11;58(11):4790-801. doi: 10.1021/acs.jmedchem.5b00466.
Richard A Ward Nicola Colclough Mairi Challinor Judit E Debreczeni Kay Eckersley Gary Fairley Lyman Feron Vikki Flemington Mark A Graham Ryan Greenwood Philip Hopcroft Tina D Howard Michael James Clifford D Jones Christopher R Jones Jonathan Renshaw Karen Roberts Lindsay Snow Michael Tonge Kay Yeung
Abstract

The Ras/Raf/MEK/ERK signaling pathway has been targeted with a number of small molecule inhibitors in oncology clinical development across multiple disease indications. Importantly, cell lines with acquired resistance to B-RAF and MEK inhibitors have been shown to maintain sensitivity to ERK1/2 inhibition by small molecule inhibitors. There are a number of selective, noncovalent ERK1/2 inhibitors reported along with the promiscuous hypothemycin (and related analogues) that act via a covalent mechanism of action. This article reports the identification of multiple series of highly selective covalent ERK1/2 inhibitors informed by structure-based drug design (SBDD). As a starting point for these covalent inhibitors, reported ERK1/2 inhibitors and a chemical series identified via high-throughput screening were exploited. These approaches resulted in the identification of selective covalent tool compounds for potential in vitro and in vivo studies to assess the risks and or benefits of targeting this pathway through such a mechanism of action.

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