1. Cyanobiphenyls: Novel H3 receptor ligands with cholinesterase and MAO B inhibitory activity as multitarget compounds for potential treatment of Alzheimer’s disease
- Author
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Katarzyna Kieć-Kononowicz, Dorota Stary, Ewelina Honkisz-Orzechowska, Agnieszka Olejarz-Maciej, Agata Doroz-Płonka, Marek Bajda, Annamaria Lubelska, Paula Zaręba, Jadwiga Handzlik, Barbara Malawska, Szczepan Mogilski, David Reiner-Link, Annika Frank, Holger Stark, Maria Kaleta, Gniewomir Latacz, Dorota Łażewska, and Justyna Godyń
- Subjects
cholinesterase inhibitors ,Pharmacology ,01 natural sciences ,Biochemistry ,monoamine oxidase B inhibitors ,chemistry.chemical_compound ,Drug Discovery ,Molecular Biology ,IC50 ,Butyrylcholinesterase ,Cholinesterase ,biology ,010405 organic chemistry ,Chemistry ,Organic Chemistry ,Biological activity ,multi-target-directed ligands ,Acetylcholinesterase ,In vitro ,0104 chemical sciences ,010404 medicinal & biomolecular chemistry ,biology.protein ,biphenyl derivatives ,Monoamine oxidase B ,Histamine H3 receptor ,Alzheimer’s disease ,histamine H3 receptor ligands - Abstract
Alzheimer’s disease (AD) is a complex and incurable illness that requires the urgent approval of new effective drugs. However, since 2003, no new molecules have shown successful results in clinical trials, thereby making the common “one compound – one target” paradigm questionable. Recently, the multitarget-directed ligand (MTDL) approach has gained popularity, as compounds targeting at least two biological targets may be potentially more effective in treating AD. On the basis of these findings, we designed, synthesized, and evaluated through biological assays a series of derivatives of alicyclic amines linked by an alkoxy bridge to an aromatic lipophilic moiety of [1,1ʹ-biphenyl]-4-carbonitrile. The research results revealed promising biological activity of the obtained compounds toward the chosen targets involved in AD pathophysiology; the compounds showed high affinity (mostly low nanomolar range of Ki values) for human histamine H3 receptors (hH3R) and good nonselective inhibitory potency (micromolar range of IC50 values) against acetylcholinesterase from electric eel (eeAChE) and equine serum butyrylcholinesterase (eqBuChE). Moreover, micromolar/submicromolar potency against human monoamine oxidase B (hMAO B) was detected for some compounds. The study identified compound 5 as a multiple hH3R/eeAChE/eqBuChE/hMAO B ligand (5: hH3R Ki = 9.2 nM; eeAChE IC50 = 2.63 µM; eqBuChE IC50 = 1.30 µM; hMAO B IC50 = 0.60 µM). Further in vitro studies revealed that compound 5 exhibits a mixed type of eeAChE and eqBuChE inhibition, good metabolic stability, and moderate hepatotoxicity effect on HepG2 cells. Finally, compound 5 showed a beneficial effect on scopolamine-induced memory impairments, as assessed by the passive avoidance test, thus revealing the potential of this compound as a promising agent for further optimization for AD treatment.
- Published
- 2021
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