Tetralone derivatives are MIF tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic mice

Macrophage migration inhibitory factor (MIF) is a pro-inflammatory cytokine playing crucial role in immunity. MIF exerts a unique tautomerase enzymatic activity that has relevance concerning its multiple functions and its small molecule inhibitors have been proven to block its pro-inflammatory effec...

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Main Authors: János Garai, Marcell Krekó, László Őrfi, Péter Balázs Jakus, Zoltán Rumbus, Patrik Kéringer, András Garami, Eszter Vámos, Dominika Kovács, Viola Bagóné Vántus, Balázs Radnai, Tamás Lóránd
Format: Article
Language:English
Published: Taylor & Francis Group 2021-01-01
Series:Journal of Enzyme Inhibition and Medicinal Chemistry
Subjects:
Online Access:http://dx.doi.org/10.1080/14756366.2021.1916010
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author János Garai
Marcell Krekó
László Őrfi
Péter Balázs Jakus
Zoltán Rumbus
Patrik Kéringer
András Garami
Eszter Vámos
Dominika Kovács
Viola Bagóné Vántus
Balázs Radnai
Tamás Lóránd
author_facet János Garai
Marcell Krekó
László Őrfi
Péter Balázs Jakus
Zoltán Rumbus
Patrik Kéringer
András Garami
Eszter Vámos
Dominika Kovács
Viola Bagóné Vántus
Balázs Radnai
Tamás Lóránd
author_sort János Garai
collection DOAJ
description Macrophage migration inhibitory factor (MIF) is a pro-inflammatory cytokine playing crucial role in immunity. MIF exerts a unique tautomerase enzymatic activity that has relevance concerning its multiple functions and its small molecule inhibitors have been proven to block its pro-inflammatory effects. Here we demonstrate that some of the E-2-arylmethylene-1-tetralones and their heteroanalogues efficiently bind to MIF’s active site and inhibit MIF tautomeric (enolase, ketolase activity) functions. A small set of the synthesised derivatives, namely compounds (4), (23), (24), (26) and (32), reduced inflammatory macrophage activation. Two of the selected compounds (24) and (26), however, markedly inhibited ROS and nitrite production, NF-κB activation, TNF-α, IL-6 and CCL-2 cytokine expression. Pre-treatment of mice with compound (24) exaggerated the hypothermic response to high dose of bacterial endotoxin. Our experiments suggest that tetralones and their derivatives inhibit MIF’s tautomeric functions and regulate macrophage activation and thermal changes in severe forms of systemic inflammation.
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spelling doaj.art-99c9586e388a44fd96582e44a894d6e82022-12-21T19:43:56ZengTaylor & Francis GroupJournal of Enzyme Inhibition and Medicinal Chemistry1475-63661475-63742021-01-013611356136810.1080/14756366.2021.19160101916010Tetralone derivatives are MIF tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic miceJános Garai0Marcell Krekó1László Őrfi2Péter Balázs Jakus3Zoltán Rumbus4Patrik Kéringer5András Garami6Eszter Vámos7Dominika Kovács8Viola Bagóné Vántus9Balázs Radnai10Tamás Lóránd11Department of Pathophysiology, Institute for Translational Medicine, University of Pécs, Medical SchoolDepartment of Pharmaceutical Chemistry, Semmelweis UniversityDepartment of Pharmaceutical Chemistry, Semmelweis UniversityDepartment of Biochemistry and Medical Chemistry, University of Pécs, Medical SchoolDepartment of Thermophysiology, Institute for Translational Medicine, University of Pécs, Medical SchoolDepartment of Thermophysiology, Institute for Translational Medicine, University of Pécs, Medical SchoolDepartment of Thermophysiology, Institute for Translational Medicine, University of Pécs, Medical SchoolDepartment of Biochemistry and Medical Chemistry, University of Pécs, Medical SchoolDepartment of Biochemistry and Medical Chemistry, University of Pécs, Medical SchoolDepartment of Biochemistry and Medical Chemistry, University of Pécs, Medical SchoolDepartment of Biochemistry and Medical Chemistry, University of Pécs, Medical SchoolDepartment of Biochemistry and Medical Chemistry, University of Pécs, Medical SchoolMacrophage migration inhibitory factor (MIF) is a pro-inflammatory cytokine playing crucial role in immunity. MIF exerts a unique tautomerase enzymatic activity that has relevance concerning its multiple functions and its small molecule inhibitors have been proven to block its pro-inflammatory effects. Here we demonstrate that some of the E-2-arylmethylene-1-tetralones and their heteroanalogues efficiently bind to MIF’s active site and inhibit MIF tautomeric (enolase, ketolase activity) functions. A small set of the synthesised derivatives, namely compounds (4), (23), (24), (26) and (32), reduced inflammatory macrophage activation. Two of the selected compounds (24) and (26), however, markedly inhibited ROS and nitrite production, NF-κB activation, TNF-α, IL-6 and CCL-2 cytokine expression. Pre-treatment of mice with compound (24) exaggerated the hypothermic response to high dose of bacterial endotoxin. Our experiments suggest that tetralones and their derivatives inhibit MIF’s tautomeric functions and regulate macrophage activation and thermal changes in severe forms of systemic inflammation.http://dx.doi.org/10.1080/14756366.2021.1916010mifmif inhibitors2-arylmethylene-1-tetralonestautomeraseinflammation
spellingShingle János Garai
Marcell Krekó
László Őrfi
Péter Balázs Jakus
Zoltán Rumbus
Patrik Kéringer
András Garami
Eszter Vámos
Dominika Kovács
Viola Bagóné Vántus
Balázs Radnai
Tamás Lóránd
Tetralone derivatives are MIF tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic mice
Journal of Enzyme Inhibition and Medicinal Chemistry
mif
mif inhibitors
2-arylmethylene-1-tetralones
tautomerase
inflammation
title Tetralone derivatives are MIF tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic mice
title_full Tetralone derivatives are MIF tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic mice
title_fullStr Tetralone derivatives are MIF tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic mice
title_full_unstemmed Tetralone derivatives are MIF tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic mice
title_short Tetralone derivatives are MIF tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic mice
title_sort tetralone derivatives are mif tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic mice
topic mif
mif inhibitors
2-arylmethylene-1-tetralones
tautomerase
inflammation
url http://dx.doi.org/10.1080/14756366.2021.1916010
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