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• W2912032078 endingPage "1477" @default.
• W2912032078 startingPage "1462" @default.
• W2912032078 abstract "A new generation of ligands designed to interact with the α-helix/β-strand discordant region of the amyloid-β peptide (Aβ) and to counteract its oligomerization is presented. These ligands are designed to interact with and stabilize the Aβ central helix (residues 13–26) in an α-helical conformation with increased interaction by combining properties of several first-generation ligands. The new peptide-like ligands aim at extended hydrophobic and polar contacts across the central part of the Aβ, that is, “clamping” the target. Molecular dynamics (MD) simulations of the stability of the Aβ central helix in the presence of a set of second-generation ligands were performed and revealed further stabilization of the Aβ α-helical conformation, with larger number of polar and nonpolar contacts between ligand and Aβ, compared to first-generation ligands. The synthesis of selected novel Aβ-targeting ligands was performed in solution via an active ester coupling approach or on solid-phase using an Fmoc chemistry protocol. This included incorporation of aliphatic hydrocarbon moieties, a branched triamino acid with an aliphatic hydrocarbon tail, and an amino acid with a 4′-N,N-dimethylamino-1,8-naphthalimido group in the side chain. The ability of the ligands to reduce Aβ1–42 neurotoxicity was evaluated by gamma oscillation experiments in hippocampal slice preparations. The “clamping” second-generation ligands were found to be effective antineurotoxicity agents and strongly prevented the degradation of gamma oscillations by physiological concentration of monomeric Aβ1–42 at a stoichiometric ratio." @default.
• W2912032078 created "2019-02-21" @default.
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• W2912032078 date "2019-01-23" @default.
• W2912032078 modified "2023-10-18" @default.
• W2912032078 title "Amyloid-β Peptide Targeting Peptidomimetics for Prevention of Neurotoxicity" @default.
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• W2912032078 doi "https://doi.org/10.1021/acschemneuro.8b00485" @default.
• W2912032078 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30673220" @default.
• W2912032078 hasPublicationYear "2019" @default.
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