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ID: ALA4680371
Journal: ACS Med Chem Lett
Title: Design and Structure-Activity Relationship of a Potent Furin Inhibitor Derived from Influenza Hemagglutinin.
Authors: Lewandowska-Goch MA,Kwiatkowska A,Łepek T,Ly K,Navals P,Gagnon H,Dory YL,Prahl A,Day R
Abstract: Furin plays an important role in various pathological states, especially in bacterial and viral infections. A detailed understanding of the structural requirements for inhibitors targeting this enzyme is crucial to develop new therapeutic strategies in infectious diseases, including an urgent unmet need for SARS-CoV-2 infection. Previously, we have identified a potent furin inhibitor, peptide Ac-RARRRKKRT-NH (CF1), based on the highly pathogenic avian influenza hemagglutinin. The goal of this study was to determine how its N-terminal part (the P8-P5 positions) affects its activity profile. To do so, the positional-scanning libraries of individual peptides modified at the selected positions with natural amino acids were generated. Subsequently, the best substitutions were combined together and/or replaced by unnatural residues to expand our investigations. The results reveal that the affinity of CF1 can be improved (2-2.5-fold) by substituting its P5 position with the small hydrophobic residues (Ile or Val) or a basic Lys.
CiteXplore: 33738063