Antioxidants (Nov 2023)

A Multitarget Approach against Neuroinflammation: Alkyl Substituted Coumarins as Inhibitors of Enzymes Involved in Neurodegeneration

  • Emanuela Berrino,
  • Simone Carradori,
  • Fabrizio Carta,
  • Francesco Melfi,
  • Marialucia Gallorini,
  • Giulio Poli,
  • Tiziano Tuccinardi,
  • José G. Fernández-Bolaños,
  • Óscar López,
  • Jacobus P. Petzer,
  • Anél Petzer,
  • Paolo Guglielmi,
  • Daniela Secci,
  • Claudiu T. Supuran

DOI
https://doi.org/10.3390/antiox12122044
Journal volume & issue
Vol. 12, no. 12
p. 2044

Abstract

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Neurodegenerative disorders (NDs) include a large range of diseases characterized by neural dysfunction with a multifactorial etiology. The most common NDs are Alzheimer’s disease and Parkinson’s disease, in which cholinergic and dopaminergic systems are impaired, respectively. Despite different brain regions being affected, oxidative stress and inflammation were found to be common triggers in the pathogenesis and progression of both diseases. By taking advantage of a multi-target approach, in this work we explored alkyl substituted coumarins as neuroprotective agents, capable to reduce oxidative stress and inflammation by inhibiting enzymes involved in neurodegeneration, among which are Carbonic Anhydrases (CAs), Monoamine Oxidases (MAOs), and Cholinesterases (ChEs). The compounds were synthesized and profiled against the three targeted enzymes. The binding mode of the most promising compounds (7 and 9) within MAO-A and -B was analyzed through molecular modeling studies, providing and explanation for the different selectivities observed for the MAO isoforms. In vitro biological studies using LPS-stimulated rat astrocytes showed that some compounds were able to counteract the oxidative stress-induced neuroinflammation and hamper interleukin-6 secretion, confirming the success of this multitarget approach.

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