Discovery of Potential, Dual-Active Histamine H<sub>3</sub> Receptor Ligands with Combined Antioxidant Properties

In an attempt to find new dual acting histamine H<sub>3</sub> receptor (H<sub>3</sub>R) ligands, we designed a series of compounds, structurally based on previously described in our group, a highly active and selective human histamine H<sub>3</sub> receptor (hH<...

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Main Authors: Kamil J. Kuder, Magdalena Kotańska, Katarzyna Szczepańska, Kamil Mika, David Reiner-Link, Holger Stark, Katarzyna Kieć-Kononowicz
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/26/8/2300
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author Kamil J. Kuder
Magdalena Kotańska
Katarzyna Szczepańska
Kamil Mika
David Reiner-Link
Holger Stark
Katarzyna Kieć-Kononowicz
author_facet Kamil J. Kuder
Magdalena Kotańska
Katarzyna Szczepańska
Kamil Mika
David Reiner-Link
Holger Stark
Katarzyna Kieć-Kononowicz
author_sort Kamil J. Kuder
collection DOAJ
description In an attempt to find new dual acting histamine H<sub>3</sub> receptor (H<sub>3</sub>R) ligands, we designed a series of compounds, structurally based on previously described in our group, a highly active and selective human histamine H<sub>3</sub> receptor (hH<sub>3</sub>R) ligand KSK63. As a result, 15 obtained compounds show moderate hH<sub>3</sub>R affinity, the best being the compound <b>17</b> (hH<sub>3</sub>R <i>K</i><sub>i</sub> = 518 nM). Docking to the histamine H<sub>3</sub>R homology model revealed two possible binding modes, with key interactions retained in both cases. In an attempt to find possible dual acting ligands, selected compounds were tested for antioxidant properties. Compound <b>16</b> (hH<sub>3</sub>R <i>K</i><sub>i</sub> = 592 nM) showed the strongest antioxidant properties at the concentration of 10<sup>−4</sup> mol/L. It significantly reduced the amount of free radicals presenting 50–60% of ascorbic acid activity in the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, as well as showed antioxidative properties in the ferric reducing antioxidant power (FRAP) assay. Despite the yet unknown antioxidation mechanism and moderate hH<sub>3</sub>R affinity, <b>16</b> (QD13) constitutes a starting point for the search of potential dual acting H<sub>3</sub>R ligands-promising tools for the treatment of neurological disorders associated with increased neuronal oxidative stress.
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spelling doaj.art-f6dc552355194124acf7001217757fb22023-11-21T15:46:01ZengMDPI AGMolecules1420-30492021-04-01268230010.3390/molecules26082300Discovery of Potential, Dual-Active Histamine H<sub>3</sub> Receptor Ligands with Combined Antioxidant PropertiesKamil J. Kuder0Magdalena Kotańska1Katarzyna Szczepańska2Kamil Mika3David Reiner-Link4Holger Stark5Katarzyna Kieć-Kononowicz6Department of Technology and Biotechnology of Drugs, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-699 Kraków, PolandDepartment of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-699 Kraków, PolandDepartment of Technology and Biotechnology of Drugs, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-699 Kraków, PolandDepartment of Pharmacodynamics, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-699 Kraków, PolandInstitute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Universitaetsstr. 1, 40225 Duesseldorf, GermanyInstitute of Pharmaceutical and Medicinal Chemistry, Heinrich Heine University Düsseldorf, Universitaetsstr. 1, 40225 Duesseldorf, GermanyDepartment of Technology and Biotechnology of Drugs, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-699 Kraków, PolandIn an attempt to find new dual acting histamine H<sub>3</sub> receptor (H<sub>3</sub>R) ligands, we designed a series of compounds, structurally based on previously described in our group, a highly active and selective human histamine H<sub>3</sub> receptor (hH<sub>3</sub>R) ligand KSK63. As a result, 15 obtained compounds show moderate hH<sub>3</sub>R affinity, the best being the compound <b>17</b> (hH<sub>3</sub>R <i>K</i><sub>i</sub> = 518 nM). Docking to the histamine H<sub>3</sub>R homology model revealed two possible binding modes, with key interactions retained in both cases. In an attempt to find possible dual acting ligands, selected compounds were tested for antioxidant properties. Compound <b>16</b> (hH<sub>3</sub>R <i>K</i><sub>i</sub> = 592 nM) showed the strongest antioxidant properties at the concentration of 10<sup>−4</sup> mol/L. It significantly reduced the amount of free radicals presenting 50–60% of ascorbic acid activity in the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, as well as showed antioxidative properties in the ferric reducing antioxidant power (FRAP) assay. Despite the yet unknown antioxidation mechanism and moderate hH<sub>3</sub>R affinity, <b>16</b> (QD13) constitutes a starting point for the search of potential dual acting H<sub>3</sub>R ligands-promising tools for the treatment of neurological disorders associated with increased neuronal oxidative stress.https://www.mdpi.com/1420-3049/26/8/2300histamine H<sub>3</sub> receptorhistamine H<sub>3</sub> receptor ligandspiperazine derivativesmolecular modelingantioxidative agents
spellingShingle Kamil J. Kuder
Magdalena Kotańska
Katarzyna Szczepańska
Kamil Mika
David Reiner-Link
Holger Stark
Katarzyna Kieć-Kononowicz
Discovery of Potential, Dual-Active Histamine H<sub>3</sub> Receptor Ligands with Combined Antioxidant Properties
Molecules
histamine H<sub>3</sub> receptor
histamine H<sub>3</sub> receptor ligands
piperazine derivatives
molecular modeling
antioxidative agents
title Discovery of Potential, Dual-Active Histamine H<sub>3</sub> Receptor Ligands with Combined Antioxidant Properties
title_full Discovery of Potential, Dual-Active Histamine H<sub>3</sub> Receptor Ligands with Combined Antioxidant Properties
title_fullStr Discovery of Potential, Dual-Active Histamine H<sub>3</sub> Receptor Ligands with Combined Antioxidant Properties
title_full_unstemmed Discovery of Potential, Dual-Active Histamine H<sub>3</sub> Receptor Ligands with Combined Antioxidant Properties
title_short Discovery of Potential, Dual-Active Histamine H<sub>3</sub> Receptor Ligands with Combined Antioxidant Properties
title_sort discovery of potential dual active histamine h sub 3 sub receptor ligands with combined antioxidant properties
topic histamine H<sub>3</sub> receptor
histamine H<sub>3</sub> receptor ligands
piperazine derivatives
molecular modeling
antioxidative agents
url https://www.mdpi.com/1420-3049/26/8/2300
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