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The combination of genetic code reprogramming and mRNA display is a powerful approach for the identification of macrocyclic peptides with high affinities to a target of interest. We have previously used such an approach to identify a potent inhibitor (CP2) of the human KDM4A and KDM4C lysine demethylases; important regulators of gene expression. In the present study, we have used genetic code reprogramming to synthesise very high diversity focused libraries (>1012 compounds) based on CP2 and, through affinity screening, used these to delineate the structure activity relationship of CP2 binding to KDM4A. In the course of these experiments we identified a CP2 analogue (CP2f-7) with ∼4-fold greater activity than CP2 in in vitro inhibition assays. This work will facilitate the development of more potent, selective inhibitors of lysine demethylases.

Original publication

DOI

10.1016/j.bmc.2018.01.013

Type

Journal article

Journal

Bioorg med chem

Publication Date

15/03/2018

Volume

26

Pages

1225 - 1231