Multifunctional mono-triazole derivatives inhibit Aβ42 aggregation, Cu2+ mediated Aβ42 aggregation and protect against Aβ42 induced cytotoxicity.

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ID: 4764
2019
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Abstract
Amyloid beta (Aβ) peptide aggregation is considered as one of the key hallmarks of Alzheimer's disease (AD). Moreover, Aβ peptide aggregation increases considerably in the presence of metal ions and triggers the generation of reactive oxygen species (ROS), which ultimately leads to oxidative stress and neuronal damage. Based on the 'multi-target-directed ligands' (MTDLs) strategy, we designed, synthesized and evaluated a novel series of triazole based compounds for AD treatment via experimental and computational methods. Among the designed MTDLs [4(a-x)], the triazole derivative 4v exhibited most potent inhibition of self induced Aβ42 aggregation (78.02%) with an IC50 value of 4.578 ± 0.109 μM and also disassembled the preformed Aβ42 aggregates significantly. In addition, compound 4v showed excellent metal chelating ability and maintained copper in the redox-dormant state to prevent the generation of ROS in copper-ascorbate redox cycling. Further, 4v significantly inhibited Cu2+-induced Aβ42 aggregation and disassembled the Cu2+-induced Aβ42 protofibrils as compared to the reference compound clioquinol (CQ). Importantly, 4v did not show cytotoxicity and was able to inhibit the toxicity induced by Aβ42 aggregates in SH-SY5Y cells. Molecular docking results confirmed the strong binding of 4v with Aβ42 monomer and Aβ42 protofibril structure. The experimental and molecular docking results highlighted that 4v is a promising multifunctional lead compound for AD.
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kaur2019multifunctionalchemical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Kaur, Amandeep;Narang, Simranjeet Singh;Kaur, Anupamjeet;Mann, Sukhmani;Priyadarshi, Nitesh;Goyal, Bhupesh;Singhal, Nitin Kumar;Goyal, Deepti;
Journal Chemical research in toxicology
Year 2019
DOI
10.1021/acs.chemrestox.9b00168
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Keywords Keywords not found

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