1
|
Garai J, Krekó M, Őrfi L, Jakus PB, Rumbus Z, Kéringer P, Garami A, Vámos E, Kovács D, Bagóné Vántus V, Radnai B, Lóránd T. Tetralone derivatives are MIF tautomerase inhibitors and attenuate macrophage activation and amplify the hypothermic response in endotoxemic mice. J Enzyme Inhib Med Chem 2021; 36:1357-1369. [PMID: 34225560 PMCID: PMC8266241 DOI: 10.1080/14756366.2021.1916010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/30/2022] Open
Abstract
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.
Collapse
Affiliation(s)
- János Garai
- Department of Pathophysiology, Institute for Translational Medicine, University of Pécs, Medical School, Pécs, Hungary
| | - Marcell Krekó
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - László Őrfi
- Department of Pharmaceutical Chemistry, Semmelweis University, Budapest, Hungary
| | - Péter Balázs Jakus
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Pécs, Hungary
| | - Zoltán Rumbus
- Department of Thermophysiology, Institute for Translational Medicine, University of Pécs, Medical School, Pécs, Hungary
| | - Patrik Kéringer
- Department of Thermophysiology, Institute for Translational Medicine, University of Pécs, Medical School, Pécs, Hungary
| | - András Garami
- Department of Thermophysiology, Institute for Translational Medicine, University of Pécs, Medical School, Pécs, Hungary
| | - Eszter Vámos
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Pécs, Hungary
| | - Dominika Kovács
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Pécs, Hungary
| | - Viola Bagóné Vántus
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Pécs, Hungary
| | - Balázs Radnai
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Pécs, Hungary
| | - Tamás Lóránd
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Pécs, Hungary
| |
Collapse
|