Issue 21, 2013

Peptideinhibitors of the Keap1–Nrf2 protein–protein interaction with improved binding and cellular activity

Abstract

Inhibitors of the Keap1–Nrf2 proteinprotein interaction (PPI) have been proposed as potential anti-inflammatory and cancer chemopreventive agents. Such compounds have the potential to increase the intracellular concentrations of Nrf2 in a reversible manner and consequently increase the expression of a battery of gene products with antioxidant response elements (AREs) in their promoter region. In this manuscript we describe the development of peptide inhibitors with modified C- and N-termini and reduced overall charge. The activity of the compounds in inhibiting the PPI and in cellular assays of Nrf2 function are described. Compound 10 has potent activity (IC50 = 22 nM) in a cell-free fluorescence polarisation assay and induced the expression of Nrf2 dependent gene products in cells, suggesting that it has potential as a lead molecule for the development of peptidomimetic inhibitors.

Graphical abstract: Peptide inhibitors of the Keap1–Nrf2 protein–protein interaction with improved binding and cellular activity

Supplementary files

Article information

Article type
Paper
Submitted
03 2 2013
Accepted
12 4 2013
First published
16 4 2013

Org. Biomol. Chem., 2013,11, 3553-3557

Peptide inhibitors of the Keap1–Nrf2 proteinprotein interaction with improved binding and cellular activity

R. Hancock, M. Schaap, H. Pfister and G. Wells, Org. Biomol. Chem., 2013, 11, 3553 DOI: 10.1039/C3OB40249E

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