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

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

Research output: Contribution to journalArticlepeer-review

Abstract

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. Graphic abstract: [Figure not available: see fulltext.].

Original languageEnglish (US)
JournalBioMetals
DOIs
StateAccepted/In press - 2021

Keywords

  • Acetylcholinesterase
  • Alzheimer’s disease
  • Beta amyloid
  • Caenorhabditis elegans
  • Desferrioxamine
  • Iron

ASJC Scopus subject areas

  • Biomaterials
  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Metals and Alloys

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