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Zhou Y, Sun W, Peng J, Yan H, Zhang L, Liu X, Zuo Z. Design, synthesis and biological evaluation of novel copper-chelating acetylcholinesterase inhibitors with pyridine and N-benzylpiperidine fragments. Bioorg Chem 2019; 93:103322. [DOI: 10.1016/j.bioorg.2019.103322] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/19/2019] [Accepted: 09/26/2019] [Indexed: 10/25/2022]
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Discovery of Selective Butyrylcholinesterase (BChE) Inhibitors through a Combination of Computational Studies and Biological Evaluations. Molecules 2019; 24:molecules24234217. [PMID: 31757047 PMCID: PMC6930573 DOI: 10.3390/molecules24234217] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/14/2019] [Accepted: 11/17/2019] [Indexed: 11/17/2022] Open
Abstract
As there are increased levels and activity of butyrylcholiesterase (BChE) in the late stage of Alzheimer’s disease (AD), development of selective BChE inhibitors is of vital importance. In this study, a workflow combining computational technologies and biological assays were implemented to identify selective BChE inhibitors with new chemical scaffolds. In particular, a pharmacophore model served as a 3D search query to screen three compound collections containing 3.0 million compounds. Molecular docking and cluster analysis were performed to increase the efficiency and accuracy of virtual screening. Finally, 15 compounds were retained for biological investigation. Results revealed that compounds 8 and 18 could potently and highly selectively inhibit BChE activities (IC50 values < 10 μM on human BChE, selectivity index BChE > 30). These active compounds with novel scaffolds provided us with a good starting point to further design potent and selective BChE inhibitors, which may be beneficial for the treatment of AD.
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Yoo S, Han MS. A fluorescent probe for butyrylcholinesterase activity in human serum based on a fluorophore with specific binding affinity for human serum albumin. Chem Commun (Camb) 2019; 55:14574-14577. [PMID: 31663530 DOI: 10.1039/c9cc07737e] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Non-specific binding of a fluorescent probe to human serum albumin is problematic because it induces signal interference when the probe detects the target biomarker in human serum. To eliminate this problem, we used intrinsically problematic non-specific fluorescence in designing a fluorescent probe for butyrylcholinesterase activity in serum. The probe containing a fluorophore with specific binding affinity for albumin could sensitively detect butyrylcholinesterase activity in serum with high selectivity to acetylcholinesterase and screen the efficiency of butyrylcholinesterase inhibitors.
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Affiliation(s)
- Soyeon Yoo
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
| | - Min Su Han
- Department of Chemistry, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
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Hoffmann M, Stiller C, Endres E, Scheiner M, Gunesch S, Sotriffer C, Maurice T, Decker M. Highly Selective Butyrylcholinesterase Inhibitors with Tunable Duration of Action by Chemical Modification of Transferable Carbamate Units Exhibit Pronounced Neuroprotective Effect in an Alzheimer's Disease Mouse Model. J Med Chem 2019; 62:9116-9140. [PMID: 31609115 DOI: 10.1021/acs.jmedchem.9b01012] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this study, the carbamate structure of pseudo-irreversible butyrylcholinesterase (BChE) inhibitors was optimized with regard to a longer binding to the enzyme. A set of compounds bearing different heterocycles (e.g., morpholine, tetrahydroisoquinoline, benzimidazole, piperidine) and alkylene spacers (2 to 10 methylene groups between carbamate and heterocycle) in the carbamate residue was synthesized and characterized in vitro for their binding affinity, binding kinetics, and carbamate hydrolysis. These novel BChE inhibitors are highly selective for hBChE over human acetycholinesterase (hAChE), yielding short-, medium-, and long-acting nanomolar hBChE inhibitors (with a half-life of the carbamoylated enzyme ranging from 1 to 28 h). The inhibitors show neuroprotective properties in a murine hippocampal cell line and a pharmacological mouse model of Alzheimer's disease (AD), suggesting a significant benefit of BChE inhibition for a disease-modifying treatment of AD.
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Affiliation(s)
- Matthias Hoffmann
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy and Food Chemistry , Julius Maximilian University Würzburg , Am Hubland, D-97074 Würzburg , Germany
| | - Carina Stiller
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy and Food Chemistry , Julius Maximilian University Würzburg , Am Hubland, D-97074 Würzburg , Germany
| | - Erik Endres
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy and Food Chemistry , Julius Maximilian University Würzburg , Am Hubland, D-97074 Würzburg , Germany
| | - Matthias Scheiner
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy and Food Chemistry , Julius Maximilian University Würzburg , Am Hubland, D-97074 Würzburg , Germany
| | - Sandra Gunesch
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy and Food Chemistry , Julius Maximilian University Würzburg , Am Hubland, D-97074 Würzburg , Germany
| | - Christoph Sotriffer
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy and Food Chemistry , Julius Maximilian University Würzburg , Am Hubland, D-97074 Würzburg , Germany
| | - Tangui Maurice
- INSERM UMR-S1198 , University of Montpellier , Place Eugène Bataillon , Montpellier F-34095 , France
| | - Michael Decker
- Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy and Food Chemistry , Julius Maximilian University Würzburg , Am Hubland, D-97074 Würzburg , Germany
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55
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Baumann K, Kordić L, Močibob M, Šinko G, Tomić S. Synthesis and In Vitro Screening of Novel Heterocyclic β-d-Gluco- and β-d-Galactoconjugates as Butyrylcholinesterase Inhibitors. Molecules 2019; 24:molecules24152833. [PMID: 31382668 PMCID: PMC6695897 DOI: 10.3390/molecules24152833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/01/2019] [Accepted: 08/03/2019] [Indexed: 12/04/2022] Open
Abstract
The development of selective butyrylcholinesterase (BChE) inhibitors may improve the treatment of Alzheimer’s disease by increasing lower synaptic levels of the neurotransmitter acetylcholine, which is hydrolysed by acetylcholinesterase, as well as by overexpressed BChE. An increase in the synaptic levels of acetylcholine leads to normal cholinergic neurotransmission and improved cognitive functions. A series of 14 novel heterocyclic β-d-gluco- and β-d-galactoconjugates were designed and screened for inhibitory activity against BChE. In the kinetic studies, 4 out of 14 compounds showed an inhibitory effect towards BChE, with benzimidazolium and 1-benzylbenzimidazolium substituted β-d-gluco- and β-d-galacto-derivatives in a 10–50 micromolar range. The analysis performed by molecular modelling indicated key residues of the BChE active site, which contributed to a higher affinity toward the selected compounds. Sugar moiety in the inhibitor should enable better blood–brain barrier permeability, and thus increase bioavailability in the central nervous system of these compounds.
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Affiliation(s)
- Krešimir Baumann
- Department of Chemistry, Faculty of Science, University of Zagreb, HR-10001 Zagreb, Croatia
| | - Lorena Kordić
- Department of Chemistry, Faculty of Science, University of Zagreb, HR-10001 Zagreb, Croatia
| | - Marko Močibob
- Department of Chemistry, Faculty of Science, University of Zagreb, HR-10001 Zagreb, Croatia
| | - Goran Šinko
- Biochemistry and Organic Analytical Chemistry Unit, Institute for Medical Research and Occupational Health, P.O. Box 291, HR-10001 Zagreb, Croatia.
| | - Srđanka Tomić
- Department of Chemistry, Faculty of Science, University of Zagreb, HR-10001 Zagreb, Croatia
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