ArticleJournal of enzyme inhibition and medicinal chemistry2026
Design, synthesis, and stability evaluation of semaglutide-derived lactam-stapled peptide scaffolds for GLP-1R targeting.
Article in Journal of enzyme inhibition and medicinal chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Glucagon-like peptide-1 receptor (GLP-1R) ligands including semaglutide play an important role in drug discovery. Herein, a short semaglutide-derived GLP-1R-engaging segment was used as the basis for scaffold construction, and conformational restabilisation was introduced through lactam stapling and bulky aromatic non-natural amino acid substitution. A total of 108 stapled peptide candidates were designed by structure-guided modelling and virtual screening. Among them, 35 peptides were synthesised and characterised. Most stapled analogues showed improved serum and proteolytic stability relative to semaglutide, and 11CP-17B, 11CP-17N, and 11CP-19N showed the most favourable stability profiles. Molecular dynamics simulations and MM-GBSA analysis were consistent with receptor-compatible poses and favourable predicted interaction patterns for these representative analogues. Collectively, these results define a practical strategy for constructing stabilised semaglutide-derived peptide scaffolds and provide a basis for subsequent functional optimisation of GLP-1R-targeting peptides.
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