Neurogenic and neuroprotective donepezil-flavonoid hybrids with sigma-1 affinity and inhibition of key enzymes in Alzheimer's disease
作者:Martín Estrada Valencia、Clara Herrera-Arozamena、Lucía de Andrés、Concepción Pérez、José A. Morales-García、Ana Pérez-Castillo、Eva Ramos、Alejandro Romero、Dolores Viña、Matilde Yáñez、Erik Laurini、Sabrina Pricl、María Isabel Rodríguez-Franco
DOI:10.1016/j.ejmech.2018.07.026
日期:2018.8
In this work we describe neurogenic and neuroprotective donepezil-flavonoid hybrids (DFHs), exhibiting nanomolar affinities for the sigma-1 receptor (sigma R-1) and inhibition of key enzymes in Alzheimer's disease (AD), such as acetylcholinesterase (AChE), 5-lipoxygenase (5-LOX), and monoamine oxidases (MAOs). In general, new compounds scavenge free radical species, are predicted to be brain-permeable, and protect neuronal cells against mitochondrial oxidative stress. N-(2-(1-Benzylpiperidin-4-yl)ethyl)-6,7-dimethoxy-4-oxo-4H-chromene-2-carboxamide (18) is highlighted due to its interesting biological profile in sigma R-1, AChE, 5-LOX, MAO-A and MAO-B. In phenotypic assays, it protects a neuronal cell line against mitochondrial oxidative stress and promotes maturation of neural stem cells into a neuronal phenotype, which could contribute to the reparation of neuronal tissues. Molecular modelling studies of 18 in AChE, 5-LOX and sigma R-1 revealed the main interactions with these proteins, which will be further exploited in the optimization of new, more efficient DFHs. (C) 2018 Elsevier Masson SAS. All rights reserved.