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Title: Conjugates of desferrioxamine and aromatic amines improve markers of iron-dependent neurotoxicity.

Authors: Carvalho, Rodrigo R V; Peres, Tanara V; Liria, Cleber W; Machini, M Teresa; Aschner, Michael; Espósito, Breno P

Published In Biometals, (2021 04)

Abstract: Alzheimer's Disease (AD) is a complex neurodegenerative disorder associated in some instances with dyshomeostasis of redox-active metal ions, such as copper and iron. In this work, we investigated whether the conjugation of various aromatic amines would improve the pharmacological efficacy of the iron chelator desferrioxamine (DFO). Conjugates of DFO with aniline (DFOANI), benzosulfanylamide (DFOBAN), 2-naphthalenamine (DFONAF) and 6-quinolinamine (DFOQUN) were obtained and their properties examined. DFOQUN had good chelating activity, promoted a significant increase in the inhibition of β-amyloid peptide aggregation when compared to DFO, and also inhibited acetylcholinesterase (AChE) activity both in vitro and in vivo (Caenorhabditis elegans). These data indicate that the covalent conjugation of a strong iron chelator to an AChE inhibitor offers a powerful approach for the amelioration of iron-induced neurotoxicity symptoms.

PubMed ID: 33389339 Exiting the NIEHS site

MeSH Terms: Acetylcholinesterase/metabolism; Amines/chemistry; Amines/pharmacology*; Amyloid beta-Peptides/antagonists & inhibitors; Amyloid beta-Peptides/metabolism; Animals; Antioxidants/chemical synthesis; Antioxidants/chemistry; Antioxidants/pharmacology*; Biphenyl Compounds/antagonists & inhibitors; Caenorhabditis elegans/drug effects*; Caenorhabditis elegans/enzymology; Cholinesterase Inhibitors/chemical synthesis; Cholinesterase Inhibitors/chemistry; Cholinesterase Inhibitors/pharmacology*; Deferoxamine/chemistry; Deferoxamine/pharmacology*; Humans; Iron Chelating Agents/chemical synthesis; Iron Chelating Agents/chemistry; Iron Chelating Agents/pharmacology*; Molecular Structure; Picrates/antagonists & inhibitors; Protein Aggregates/drug effects

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