De Novo Modular Development of a Foldameric Protein-Protein Interaction Inhibitor for Separate Hot Spots: A Dynamic Covalent Assembly Approach

Éva Bartus, Zsófia Hegedüs, Edit Wéber, Brigitta Csipak, G. Szakonyi, T. Martinek

Research output: Article

4 Citations (Scopus)

Abstract

Protein-protein interactions stabilized by multiple separate hot spots are highly challenging targets for synthetic scaffolds. Surface-mimetic foldamers bearing multiple recognition segments are promising candidate inhibitors. In this work, a modular bottom-up approach is implemented by identifying short foldameric recognition segments that interact with the independent hot spots, and connecting them through dynamic covalent library (DCL) optimization. The independent hot spots of a model target (calmodulin) are mapped with hexameric β-peptide helices using a pull-down assay. Recognition segment hits are subjected to a target-templated DCL ligation through thiol-disulfide exchange. The most potent derivative displays low nanomolar affinity towards calmodulin and effectively inhibits the calmodulin-TRPV1 interaction. The DCL assembly of the folded segments offers an efficient approach towards the denovo development of a high-affinity inhibitor of protein-protein interactions.

Original languageEnglish
JournalChemistryOpen
DOIs
Publication statusAccepted/In press - 2017

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ASJC Scopus subject areas

  • Chemistry(all)

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