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http://hdl.handle.net/2445/210004
Title: | Thioxanthenone-based derivatives as multitarget therapeutic leads for Alzheimer's disease |
Author: | Tonelli, Michele Catto, Marco Sabaté Lagunas, Raimon Francesconi, Valeria Laurini, Erik Pricl, Sabrina Pisani, Leonardo Miniero, Daniela Valeria Liuzzi, Grazia Maria Gatta, Elena Relini, Annalisa Gavín Marín, Rosalina Río Fernández, José Antonio del Sparatore, Fabio Carotti, Angelo |
Keywords: | Malaltia d'Alzheimer Acetilcolinesterasa Alzheimer's disease Acetylcholinesterase |
Issue Date: | Mar-2023 |
Publisher: | Elsevier Masson SAS |
Abstract: | A set of twenty-five thioxanthene-9-one and xanthene-9-one derivatives, that were previously shown to inhibit cholinesterases (ChEs) and amyloid β (Aβ40) aggregation, were evaluated for the inhibition of tau protein aggregation. All compounds exhibited a good activity, and eight of them (5–8, 10, 14, 15 and 20) shared comparable low micromolar inhibitory potency versus Aβ40 aggregation and human acetylcholinesterase (AChE), while inhibiting human butyrylcholinesterase (BChE) even at submicromolar concentration. Compound 20 showed outstanding biological data, inhibiting tau protein and Aβ40 aggregation with IC50 = 1.8 and 1.3 μM, respectively. Moreover, at 0.1–10 μM it also exhibited neuroprotective activity against tau toxicity induced by okadoic acid in human neuroblastoma SH-SY5Y cells, that was comparable to that of estradiol and PD38. In preliminary toxicity studies, these interesting results for compound 20 are somewhat conflicting with a narrow safety window. However, compound 10, although endowed with a little lower potency for tau and Aβ aggregation inhibition additionally demonstrated good inhibition of ChEs and rather low cytotoxicity. Compound 4 is also worth of note for its high potency as hBChE inhibitor (IC50 = 7 nM) and for the three order of magnitude selectivity versus hAChE. Molecular modelling studies were performed to explain the different behavior of compounds 4 and 20 towards hBChE. The observed balance of the inhibitory potencies versus the relevant targets indicates the thioxanthene-9-one derivatives as potential MTDLs for AD therapy, provided that the safety window will be improved by further structural variations, currently under investigation. |
Note: | Reproducció del document publicat a: https://doi.org/10.1016/j.ejmech.2023.115169 |
It is part of: | European Journal of Medicinal Chemistry, 2023, vol. 250, p. 1-12 |
URI: | http://hdl.handle.net/2445/210004 |
Related resource: | https://doi.org/10.1016/j.ejmech.2023.115169 |
ISSN: | 0223-5234 |
Appears in Collections: | Articles publicats en revistes (Biologia Cel·lular, Fisiologia i Immunologia) Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC)) |
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