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Efficient development of stable and highly functionalised peptides targeting the CK2α/CK2β protein–protein interaction

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Abstract

The discovery of new Protein–Protein Interaction (PPI) modulators is currently limited by the difficulties associated with the design and synthesis of selective small molecule inhibitors. Peptides are a potential solution for disrupting PPIs; however, they typically suffer from poor stability in vivo and limited tissue penetration hampering their wide spread use as new chemical biology tools and potential therapeutics. In this work, a combination of CuAAC chemistry, molecular modelling, X-ray crystallography, and biological validation allowed us to develop highly functionalised peptide PPI inhibitors of the protein CK2. The lead peptide, CAM7117, prevents the formation of the holoenzyme assembly in vitro, slows down proliferation, induces apoptosis in cancer cells and is stable in human serum. CAM7117 could aid the development of novel CK2 inhibitors acting at the interface and help to fully understand the intracellular pathways involving CK2. Importantly, the approach adopted herein could be applied to many PPI targets and has the potential to ease the study of PPIs by efficiently providing access to functionalised peptides.

Graphical abstract: Efficient development of stable and highly functionalised peptides targeting the CK2α/CK2β protein–protein interaction

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Publication details

The article was received on 15 Feb 2019, accepted on 11 Apr 2019 and first published on 12 Apr 2019


Article type: Edge Article
DOI: 10.1039/C9SC00798A
Citation: Chem. Sci., 2019, Advance Article
  • Open access: Creative Commons BY license
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    Efficient development of stable and highly functionalised peptides targeting the CK2α/CK2β protein–protein interaction

    J. Iegre, P. Brear, D. J. Baker, Y. S. Tan, E. L. Atkinson, H. F. Sore, D. H. O' Donovan, C. S. Verma, M. Hyvönen and D. R. Spring, Chem. Sci., 2019, Advance Article , DOI: 10.1039/C9SC00798A

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