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Elsinghorst PW, Wille T, Barić D, Mertens MD, Baumann M, Küppers J, Gütschow M. Aminoalkoxy-substituted coumarins: Synthesis and evaluation for reactivation of inhibited human acetylcholinesterase. Arch Pharm (Weinheim) 2022; 355:e2200208. [PMID: 35876340 DOI: 10.1002/ardp.202200208] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/21/2022] [Accepted: 07/05/2022] [Indexed: 11/09/2022]
Abstract
Reactivation of inhibited acetylcholinesterase remains an important therapeutic strategy for the treatment of poisoning by organophosphorus compounds, such as nerve agents or pesticides. Although drugs like obidoxime or pralidoxime have been used with considerable success, there is a need for new substances capable of reactivating acetylcholinesterase with a broader scope and increased efficacy. Possible screening candidates must fulfill two fundamental requirements: They must (i) show an affinity to acetylcholinesterase well balanced between sufficient binding and competitive inhibition and (ii) facilitate the nucleophilic cleavage of the phosphorylated catalytic serine residue. We attached a variety of nonaromatic primary and secondary amines to a coumarin core through selected alkoxy side linkers attached at coumarin positions 6 or 7 to obtain a small set of possible reactivators. Evaluation of their inhibition and reactivation potential in vitro showed some activity with respect to acetylcholinesterase inhibited by cyclosarin.
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Affiliation(s)
- Paul W Elsinghorst
- Food Chemistry, Central Institute of the Bundeswehr Medical Service Munich, Garching, Germany.,Department of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Timo Wille
- Bundeswehr Institute of Pharmacology and Toxicology, München, Germany
| | - Danijela Barić
- Group for Computational Life Sciences, Division of Physical Chemistry, Ruđer Bošković Institute, Zagreb, Croatia
| | - Matthias D Mertens
- Department of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, Bonn, Germany
| | - Madlen Baumann
- Bundeswehr Institute of Pharmacology and Toxicology, München, Germany
| | - Jim Küppers
- Department of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, Bonn, Germany.,Department of Nuclear Medicine, University Hospital Bonn, Bonn, Germany
| | - Michael Gütschow
- Department of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, University of Bonn, Bonn, Germany
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2
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Mertens MD, Bierwisch A, Li T, Gütschow M, Thiermann H, Wille T, Elsinghorst PW. A novel fluorogenic probe for the investigation of free thiols: Application to kinetic measurements of acetylcholinesterase activity. Toxicol Lett 2016; 244:161-166. [PMID: 26494253 DOI: 10.1016/j.toxlet.2015.10.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 10/13/2015] [Accepted: 10/13/2015] [Indexed: 11/27/2022]
Abstract
A novel coumarin-derived thiol probe, based on the thiol-promoted cleavage of a quenching 2,4-dinitrobenzenesulfonyl group is described. The probe shows a sensitive fluorescence turn-on and sufficient solubility in aqueous environments. As a proof of concept, a new assay for AChE activity was developed as a useful addition to the established Ellman method. The observed reaction kinetics followed an asymmetric sigmoidal pattern and were successfully evaluated applying a three parameter Gompertz equation. Providing a linear relationship between the detected fluorescence formation curves and corresponding enzyme activities, this probe appears as a valuable tool for AChE activity measurements.
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Affiliation(s)
- Matthias D Mertens
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Anne Bierwisch
- Bundeswehr Institute of Pharmacology and Toxicology, Neuherbergstraße 11, 80937 München, Germany
| | - Tianwei Li
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Michael Gütschow
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany
| | - Horst Thiermann
- Bundeswehr Institute of Pharmacology and Toxicology, Neuherbergstraße 11, 80937 München, Germany
| | - Timo Wille
- Bundeswehr Institute of Pharmacology and Toxicology, Neuherbergstraße 11, 80937 München, Germany
| | - Paul W Elsinghorst
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, 53121 Bonn, Germany; Bundeswehr Institute of Pharmacology and Toxicology, Neuherbergstraße 11, 80937 München, Germany.
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3
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Kohl F, Schmitz J, Furtmann N, Schulz-Fincke AC, Mertens MD, Küppers J, Benkhoff M, Tobiasch E, Bartz U, Bajorath J, Stirnberg M, Gütschow M. Design, characterization and cellular uptake studies of fluorescence-labeled prototypic cathepsin inhibitors. Org Biomol Chem 2015; 13:10310-23. [DOI: 10.1039/c5ob01613d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cysteine cathepsin inhibition and cellular uptake of a coumarin 343-containing dipeptide nitrile was analyzed.
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Affiliation(s)
- Franziska Kohl
- Pharmaceutical Institute
- Pharmaceutical Chemistry I
- University of Bonn
- D-53121 Bonn, Germany
| | - Janina Schmitz
- Pharmaceutical Institute
- Pharmaceutical Chemistry I
- University of Bonn
- D-53121 Bonn, Germany
- Department of Natural Sciences
| | - Norbert Furtmann
- Pharmaceutical Institute
- Pharmaceutical Chemistry I
- University of Bonn
- D-53121 Bonn, Germany
- Department of Life Science Informatics
| | | | - Matthias D. Mertens
- Pharmaceutical Institute
- Pharmaceutical Chemistry I
- University of Bonn
- D-53121 Bonn, Germany
| | - Jim Küppers
- Pharmaceutical Institute
- Pharmaceutical Chemistry I
- University of Bonn
- D-53121 Bonn, Germany
| | - Marcel Benkhoff
- Pharmaceutical Institute
- Pharmaceutical Chemistry I
- University of Bonn
- D-53121 Bonn, Germany
| | - Edda Tobiasch
- Department of Natural Sciences
- Bonn-Rhein-Sieg University of Applied Sciences
- D-53359 Rheinbach, Germany
| | - Ulrike Bartz
- Department of Natural Sciences
- Bonn-Rhein-Sieg University of Applied Sciences
- D-53359 Rheinbach, Germany
| | - Jürgen Bajorath
- Department of Life Science Informatics
- B-IT
- LIMES Program Unit Chemical Biology and Medicinal Chemistry
- University of Bonn
- D-53113 Bonn, Germany
| | - Marit Stirnberg
- Pharmaceutical Institute
- Pharmaceutical Chemistry I
- University of Bonn
- D-53121 Bonn, Germany
| | - Michael Gütschow
- Pharmaceutical Institute
- Pharmaceutical Chemistry I
- University of Bonn
- D-53121 Bonn, Germany
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4
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Mertens MD, Schmitz J, Horn M, Furtmann N, Bajorath J, Mareš M, Gütschow M. A coumarin-labeled vinyl sulfone as tripeptidomimetic activity-based probe for cysteine cathepsins. Chembiochem 2014; 15:955-9. [PMID: 24648212 DOI: 10.1002/cbic.201300806] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Indexed: 12/15/2022]
Abstract
A coumarin-tetrahydroquinoline hydride 8 was synthesized as a chemical tool for fluorescent labeling. The rigidified tricyclic coumarin structure was chosen for its suitable fluorescence properties. The connection of 8 with a vinyl sulfone building block was accomplished by convergent synthesis thereby leading to the coumarin-based, tripeptidomimetic activity-based probe 10, containing a Gly-Phe-Gly motif. Probe 10 was evaluated as inactivator of the therapeutically relevant human cysteine cathepsins S, L, K, and B: it showed particularly strong inactivation of cathepsin S. The detection of recombinant and native cathepsin S was demonstrated by applying 10 to in-gel fluorescence imaging.
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Affiliation(s)
- Matthias D Mertens
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, 53121 Bonn (Germany)
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Mertens MD, Hinz S, Müller CE, Gütschow M. Alkynyl–coumarinyl ethers as MAO-B inhibitors. Bioorg Med Chem 2014; 22:1916-28. [DOI: 10.1016/j.bmc.2014.01.046] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 01/20/2014] [Accepted: 01/23/2014] [Indexed: 12/20/2022]
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Mertens MD, Gütschow M. Synthesis and Evaluation of Two Coumarin-Type Derivatization Reagents for Fluorescence Detection of Chiral Amines and Chiral Carboxylic Acids. Chirality 2013; 25:957-64. [DOI: 10.1002/chir.22240] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 07/26/2013] [Accepted: 08/06/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Matthias D. Mertens
- Pharmaceutical Institute, Pharmaceutical Chemistry I; University of Bonn; Bonn Germany
| | - Michael Gütschow
- Pharmaceutical Institute, Pharmaceutical Chemistry I; University of Bonn; Bonn Germany
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Mertens MD, Pietsch M, Schnakenburg G, Gütschow M. Regioselective Sulfonylation and N- to O-Sulfonyl Migration of Quinazolin-4(3H)-ones and Analogous Thienopyrimidin-4(3H)-ones. J Org Chem 2013; 78:8966-79. [DOI: 10.1021/jo4010876] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Matthias D. Mertens
- Pharmaceutical
Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg
4, D-53121 Bonn, Germany
| | - Markus Pietsch
- Pharmaceutical
Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg
4, D-53121 Bonn, Germany
| | - Gregor Schnakenburg
- Institute
of Inorganic Chemistry, University of Bonn, Gerhard-Domagk-Strasse 1, D-53121 Bonn, Germany
| | - Michael Gütschow
- Pharmaceutical
Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg
4, D-53121 Bonn, Germany
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8
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Frizler M, Mertens MD, Gütschow M. Fluorescent nitrile-based inhibitors of cysteine cathepsins. Bioorg Med Chem Lett 2012; 22:7715-8. [PMID: 23122525 DOI: 10.1016/j.bmcl.2012.09.086] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 09/20/2012] [Accepted: 09/25/2012] [Indexed: 01/18/2023]
Abstract
Cysteine cathepsins play an important role in many (patho)physiological conditions. Among them, cathepsins L, S, K and B are subjects of several drug discovery programs. Besides their role as drug targets, cysteine cathepsins are additionally considered to be possible biomarkers for inflammation and cancer. Herein, we describe the design, synthesis, biological evaluation and spectral properties of fluorescently labeled dipeptide- and azadipeptide nitriles.
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Affiliation(s)
- Maxim Frizler
- Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
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Fustero S, Cuñat AC, Flores S, Báez C, Oliver J, Cynamon M, Gütschow M, Mertens MD, Delgado O, Tresadern G, Trabanco AA. Design, Synthesis, and Biological Evaluation of Novel Fluorinated Ethanolamines. Chemistry 2011; 17:14772-84. [DOI: 10.1002/chem.201102078] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Indexed: 01/11/2023]
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