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da Costa Rodrigues K, da Conceição Oliveira M, Dos Santos BF, de Campos Domingues NL, Fronza MG, Savegnago L, Wilhelm EA, Luchese C. Mechanisms involved in the antidepressant-like action of orally administered 5-((4-methoxyphenyl)thio)benzo[c][1,2,5]thiadiazole (MTDZ) in male and female mice. Psychopharmacology (Berl) 2024:10.1007/s00213-024-06647-0. [PMID: 39008059 DOI: 10.1007/s00213-024-06647-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 07/02/2024] [Indexed: 07/16/2024]
Abstract
RATIONALE The compound 5-((4-methoxyphenyl)thio)benzo[c][1,2,5]thiadiazole (MTDZ) has recently been shown to inhibit in vitro acetylcholinesterase activity, reduce cognitive damage, and improve neuropsychic behavior in mice, making it a promising molecule to treat depression. OBJECTIVES This study investigated the antidepressant-like action of MTDZ in mice and its potential mechanisms of action. RESULTS Molecular docking assays were performed and suggested a potential inhibition of monoamine oxidase A (MAO-A) by MTDZ. The toxicity study revealed that MTDZ displayed no signs of toxicity, changes in oxidative parameters, or alterations to biochemistry markers, even at a high dose of 300 mg/kg. In behavioral tests, MTDZ administration reduced immobility behavior during the forced swim test (FST) without adjusting the climbing parameter, suggesting it has an antidepressant effect. The antidepressant-like action of MTDZ was negated with the administration of 5-HT1A, 5-HT1A/1B, and 5-HT3 receptor antagonists, implying the involvement of serotonergic pathways. Moreover, the antidepressant-like action of MTDZ was linked to the NO system, as L-arginine pretreatment inhibited its activity. The ex vivo assays indicated that MTDZ normalized ATPase activity, potentially linking this behavior to its antidepressant-like action. MTDZ treatment restricted MAO-A activity in the cerebral cortices and hippocampi of mice, proposing a selective inhibition of MAO-A associated with the antidepressant-like effect of the compound. CONCLUSIONS These findings suggest that MTDZ may serve as a promising antidepressant agent due to its selective inhibition of MAO-A and the involvement of serotonergic and NO pathways.
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Affiliation(s)
- Karline da Costa Rodrigues
- Research Laboratory in Biochemical Pharmacology (LaFarBio), Neurobiotechnology Research Group (GPN), Center for Chemical, Pharmaceutical and Food Sciences, Federal University of Pelotas (UFPel), Campus Capão do Leão, Pelotas, RS, CEP 96010-900, Brazil
| | - Meliza da Conceição Oliveira
- Research Laboratory in Biochemical Pharmacology (LaFarBio), Neurobiotechnology Research Group (GPN), Center for Chemical, Pharmaceutical and Food Sciences, Federal University of Pelotas (UFPel), Campus Capão do Leão, Pelotas, RS, CEP 96010-900, Brazil
| | - Beatriz Fuzinato Dos Santos
- Laboratory of Organic Catalysis and Biocatalysis, Federal University of Grande Dourados, Dourados, MS, Brazil
| | | | - Mariana Gallio Fronza
- Graduate Program in Biotechnology (GPN), Technological Development Center, Federal University of Pelotas (UFPel), Pelotas, RS, CEP 96010-900, Brazil
| | - Lucielli Savegnago
- Graduate Program in Biotechnology (GPN), Technological Development Center, Federal University of Pelotas (UFPel), Pelotas, RS, CEP 96010-900, Brazil
| | - Ethel Antunes Wilhelm
- Research Laboratory in Biochemical Pharmacology (LaFarBio), Neurobiotechnology Research Group (GPN), Center for Chemical, Pharmaceutical and Food Sciences, Federal University of Pelotas (UFPel), Campus Capão do Leão, Pelotas, RS, CEP 96010-900, Brazil
| | - Cristiane Luchese
- Research Laboratory in Biochemical Pharmacology (LaFarBio), Neurobiotechnology Research Group (GPN), Center for Chemical, Pharmaceutical and Food Sciences, Federal University of Pelotas (UFPel), Campus Capão do Leão, Pelotas, RS, CEP 96010-900, Brazil.
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Sung J, Kim S, Jung J, Kim TH, Kwon S, Bae HE, Kang MJ, Jose J, Lee M, Pyun JC. Monoamine Oxidase-A (MAO-A) Inhibitors Screened from the Autodisplayed Fv-Antibody Library. ACS Pharmacol Transl Sci 2024; 7:150-160. [PMID: 38230273 PMCID: PMC10789138 DOI: 10.1021/acsptsci.3c00204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 11/11/2023] [Accepted: 12/13/2023] [Indexed: 01/18/2024]
Abstract
Serotonin-like mimotopes were screened from the Fv-antibody library to be used as inhibitors against monoamine oxidase A (MAO-A). The Fv-antibody [corresponding to the VH region of immunoglobulin G (IgG)] consists of three complementarity-determining regions and four frame regions. The Fv-antibody library was prepared by site-directed mutagenesis of CDR3, which consists of 11 amino acid residues. Three target clones were screened from the Fv-antibody library, and the binding affinity of the screened clones to the monoclonal anti-serotonin antibody was analyzed using fluorescence-activated cell sorting. The screened Fv-antibodies were expressed as soluble proteins fused with green fluorescence protein. Additionally, the screened CDR3 regions (11 residues) of the selected Fv-antibodies were synthesized as peptides with linking amino acid residues. The binding constants (KD) of the three serotonin-like mimotopes (Fv-antibodies and peptides) were estimated using a surface plasmon resonance biosensor. The inhibitory activity (IC50) of the serotonin-like mimotopes (Fv-antibodies and peptides) was estimated separately for MAO-A and MAO-B enzymes and compared with that of conventional inhibitors. Finally, the screened serotonin-like mimotopes were used to treat a cell line (SH-SY5Y, ATCC code: CRL-2266) expressing serotonin receptors. This was done to confirm the following two aspects: (1) the binding of mimotopes to the serotonin receptors on the cell surface and (2) the inhibitory activity of mimotopes against MAO-A enzymes in the cell lysates.
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Affiliation(s)
- Jeong
Soo Sung
- Department
of Materials Science and Engineering, Yonsei
University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Seunghwan Kim
- Division
of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon 22012, Korea
| | - Jaeyong Jung
- Department
of Materials Science and Engineering, Yonsei
University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Tae-Hun Kim
- Department
of Materials Science and Engineering, Yonsei
University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Soonil Kwon
- Department
of Materials Science and Engineering, Yonsei
University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Hyung Eun Bae
- Department
of Materials Science and Engineering, Yonsei
University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Min-Jung Kang
- Korea
Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Joachim Jose
- Institute
of Pharmaceutical and Medical Chemistry, Westfälischen Wilhelms-Universität Münster, Müenster 48149, Germany
| | - Misu Lee
- Division
of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon 22012, Korea
- Institute
for New Drug Development, Incheon National
University, Incheon 22012, Korea
| | - Jae-Chul Pyun
- Department
of Materials Science and Engineering, Yonsei
University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
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Yang C, Wang X, Gao C, Liu Y, Ma Z, Zang J, Wang H, Liu L, Liu Y, Sun H, Wang W. Molecular Mechanism and Structure-activity Relationship of the Inhibition Effect between Monoamine Oxidase and Selegiline Analogues. Curr Comput Aided Drug Des 2024; 20:474-485. [PMID: 37138424 DOI: 10.2174/1573409919666230503143055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 02/19/2023] [Accepted: 03/27/2023] [Indexed: 05/05/2023]
Abstract
INTRODUCTION To investigate the inhibition properties and structure-activity relationship between monoamine oxidase (MAO) and selected monoamine oxidase inhibitors (MAOIs, including selegiline, rasagiline and clorgiline). METHODS The inhibition effect and molecular mechanism between MAO and MAOIs were identified via the half maximal inhibitory concentration (IC50) and molecular docking technology. RESULTS It was indicated that selegiline and rasagiline were MAO B inhibitors, but clorgiline was MAO-A inhibitor based on the selectivity index (SI) of MAOIs (0.000264, 0.0197 and 14607.143 for selegiline, rasagiline and clorgiline, respectively). The high-frequency amino acid residues of the MAOIs and MAO were Ser24, Arg51, Tyr69 and Tyr407 for MAO-A and Arg42 and Tyr435 for MAO B. The MAOIs and MAO A/B pharmacophores included the aromatic core, hydrogen bond acceptor, hydrogen bond donor-acceptor and hydrophobic core. CONCLUSION This study shows the inhibition effect and molecular mechanism between MAO and MAOIs and provides valuable findings on the design and treatment of Alzheimer's and Parkinson's diseases.
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Affiliation(s)
- Chuanxi Yang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, Shandong, 266520, China
| | - Xiaoning Wang
- School of Mechanical Engineering and Automation, Northeastern University, Shenyang, Liaoning, 110819, China
| | - Chang Gao
- Qingdao Jiaming Measurement and Control Technology Co., Ltd., Qingdao, Shandong, 266000, China
| | - Yunxiang Liu
- Environmental Monitoring Station of Yuncheng County Environmental Protection Bureau, Heze, Shandong, 274700, China
| | - Ziyi Ma
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, Shandong, 266520, China
| | - Jinqiu Zang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, Shandong, 266520, China
| | - Haoce Wang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, Shandong, 266520, China
| | - Lin Liu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, Shandong, 266520, China
| | - Yonglin Liu
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, Shandong, 266520, China
| | - Haofen Sun
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, Shandong, 266520, China
| | - Weiliang Wang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao, Shandong, 266520, China
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Soon HR, Gaunt JR, Bansal VA, Lenherr C, Sze SK, Ch’ng TH. Seizure enhances SUMOylation and zinc-finger transcriptional repression in neuronal nuclei. iScience 2023; 26:107707. [PMID: 37694138 PMCID: PMC10483055 DOI: 10.1016/j.isci.2023.107707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/29/2023] [Accepted: 08/21/2023] [Indexed: 09/12/2023] Open
Abstract
A single episode of pilocarpine-induced status epilepticus can trigger the development of spontaneous recurrent seizures in a rodent model for epilepsy. The initial seizure-induced events in neuronal nuclei that lead to long-term changes in gene expression and cellular responses likely contribute toward epileptogenesis. Using a transgenic mouse model to specifically isolate excitatory neuronal nuclei, we profiled the seizure-induced nuclear proteome via tandem mass tag mass spectrometry and observed robust enrichment of nuclear proteins associated with the SUMOylation pathway. In parallel with nuclear proteome, we characterized nuclear gene expression by RNA sequencing which provided insights into seizure-driven transcriptional regulation and dynamics. Strikingly, we saw widespread downregulation of zinc-finger transcription factors, specifically proteins that harbor Krüppel-associated box (KRAB) domains. Our results provide a detailed snapshot of nuclear events induced by seizure activity and demonstrate a robust method for cell-type-specific nuclear profiling that can be applied to other cell types and models.
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Affiliation(s)
- Hui Rong Soon
- School of Biological Science, Nanyang Technological University, Singapore 636551, Singapore
| | - Jessica Ruth Gaunt
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Vibhavari Aysha Bansal
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Clara Lenherr
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
- Centre for Discovery Brain Science, The University of Edinburgh, Edinburgh, UK
| | - Siu Kwan Sze
- Faculty of Applied Health Sciences, Brock University, St. Catherines, ON, Canada
| | - Toh Hean Ch’ng
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
- School of Biological Science, Nanyang Technological University, Singapore 636551, Singapore
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Guo Z, Gu J, Zhang M, Su F, Su W, Xie Y. NMR-Based Metabolomics to Analyze the Effects of a Series of Monoamine Oxidases-B Inhibitors on U251 Cells. Biomolecules 2023; 13:biom13040600. [PMID: 37189348 DOI: 10.3390/biom13040600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/17/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023] Open
Abstract
Alzheimer’s disease (AD) is a typical progressive neurodegenerative disorder, and with multiple possible pathogenesis. Among them, coumarin derivatives could be used as potential drugs as monoamine oxidase-B (MAO-B) inhibitors. Our lab has designed and synthesized coumarin derivatives based on MAO-B. In this study, we used nuclear magnetic resonance (NMR)-based metabolomics to accelerate the pharmacodynamic evaluation of candidate drugs for coumarin derivative research and development. We detailed alterations in the metabolic profiles of nerve cells with various coumarin derivatives. In total, we identified 58 metabolites and calculated their relative concentrations in U251 cells. In the meantime, the outcomes of multivariate statistical analysis showed that when twelve coumarin compounds were treated with U251cells, the metabolic phenotypes were distinct. In the treatment of different coumarin derivatives, there several metabolic pathways changed, including aminoacyl-tRNA biosynthesis, D-glutamine and D-glutamate metabolism, glycine, serine and threonine metabolism, taurine and hypotaurine metabolism, arginine biosynthesis, alanine, aspartate and glutamate metabolism, phenylalanine, tyrosine and tryptophan biosynthesis, glutathione metabolism and valine, leucine and isoleucine biosynthesis. Our work documented how our coumarin derivatives affected the metabolic phenotype of nerve cells in vitro. We believe that these NMR-based metabolomics might accelerate the process of drug research in vitro and in vivo.
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Abstract
Propargylamine is a chemical moiety whose properties have made it a widely distributed group within the fields of medicinal chemistry and chemical biology. Its particular reactivity has traditionally popularized the preparation of propargylamine derivatives using a large variety of synthetic strategies, which have facilitated the access to these compounds for the study of their biomedical potential. This review comprehensively covers and analyzes the applications that propargylamine-based derivatives have achieved in the drug discovery field, both from a medicinal chemistry perspective and from a chemical biology-oriented approach. The principal therapeutic fields where propargylamine-based compounds have made an impact are identified, and a discussion of their influence and growing potential is included.
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Iqbal D, Rizvi SMD, Rehman MT, Khan MS, Bin Dukhyil A, AlAjmi MF, Alshehri BM, Banawas S, Zia Q, Alsaweed M, Madkhali Y, Alsagaby SA, Alturaiki W. Soyasapogenol-B as a Potential Multitarget Therapeutic Agent for Neurodegenerative Disorders: Molecular Docking and Dynamics Study. ENTROPY 2022; 24:e24050593. [PMID: 35626478 PMCID: PMC9141571 DOI: 10.3390/e24050593] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 04/12/2022] [Accepted: 04/20/2022] [Indexed: 01/27/2023]
Abstract
Neurodegenerative disorders involve various pathophysiological pathways, and finding a solution for these issues is still an uphill task for the scientific community. In the present study, a combination of molecular docking and dynamics approaches was applied to target different pathways leading to neurodegenerative disorders such as Alzheimer’s disease. Initially, abrineurin natural inducers were screened using physicochemical properties and toxicity assessment. Out of five screened compounds, a pentacyclic triterpenoid, i.e., Soyasapogenol B appeared to be the most promising after molecular docking and simulation analysis. Soyasapogenol B showed low TPSA (60.69), high absorption (82.6%), no Lipinski rule violation, and no toxicity. Docking interaction analysis revealed that Soyasapogenol B bound effectively to all of the targeted proteins (AChE, BuChE MAO-A, MAO-B, GSK3β, and NMDA), in contrast to other screened abrineurin natural inducers and inhibitors. Importantly, Soyasapogenol B bound to active site residues of the targeted proteins in a similar pattern to the native ligand inhibitor. Further, 100 ns molecular dynamics simulations analysis showed that Soyasapogenol B formed stable complexes against all of the targeted proteins. RMSD analysis showed that the Soyasapogenol B–protein complex exhibited average RMSD values of 1.94 Å, 2.11 Å, 5.07 Å, 2.56 Å, 3.83 Å and 4.07 Å. Furthermore, the RMSF analysis and secondary structure analysis also indicated the stability of the Soyasapogenol B–protein complexes.
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Affiliation(s)
- Danish Iqbal
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia; (A.B.D.); (B.M.A.); (S.B.); (Q.Z.); (M.A.); (Y.M.); (S.A.A.); (W.A.)
- Health and Basic Sciences Research Center, Majmaah University, Al Majmaah 15341, Saudi Arabia
- Correspondence: (D.I.); (S.M.D.R.)
| | - Syed Mohd Danish Rizvi
- Department of Pharmaceutics, College of Pharmacy, University of Hail, Hail 81442, Saudi Arabia
- Correspondence: (D.I.); (S.M.D.R.)
| | - Md Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (M.T.R.); (M.F.A.)
| | - M. Salman Khan
- Clinical Biochemistry & Natural Product Research Laboratory, Department of Biosciences, Integral University, Lucknow 226026, U.P., India;
| | - Abdulaziz Bin Dukhyil
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia; (A.B.D.); (B.M.A.); (S.B.); (Q.Z.); (M.A.); (Y.M.); (S.A.A.); (W.A.)
| | - Mohamed F. AlAjmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia; (M.T.R.); (M.F.A.)
| | - Bader Mohammed Alshehri
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia; (A.B.D.); (B.M.A.); (S.B.); (Q.Z.); (M.A.); (Y.M.); (S.A.A.); (W.A.)
| | - Saeed Banawas
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia; (A.B.D.); (B.M.A.); (S.B.); (Q.Z.); (M.A.); (Y.M.); (S.A.A.); (W.A.)
- Health and Basic Sciences Research Center, Majmaah University, Al Majmaah 15341, Saudi Arabia
- Department of Biomedical Sciences, Oregon State University, Corvallis, OR 97331, USA
| | - Qamar Zia
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia; (A.B.D.); (B.M.A.); (S.B.); (Q.Z.); (M.A.); (Y.M.); (S.A.A.); (W.A.)
- Health and Basic Sciences Research Center, Majmaah University, Al Majmaah 15341, Saudi Arabia
| | - Mohammed Alsaweed
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia; (A.B.D.); (B.M.A.); (S.B.); (Q.Z.); (M.A.); (Y.M.); (S.A.A.); (W.A.)
| | - Yahya Madkhali
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia; (A.B.D.); (B.M.A.); (S.B.); (Q.Z.); (M.A.); (Y.M.); (S.A.A.); (W.A.)
| | - Suliman A. Alsagaby
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia; (A.B.D.); (B.M.A.); (S.B.); (Q.Z.); (M.A.); (Y.M.); (S.A.A.); (W.A.)
| | - Wael Alturaiki
- Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia; (A.B.D.); (B.M.A.); (S.B.); (Q.Z.); (M.A.); (Y.M.); (S.A.A.); (W.A.)
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Abstract
We have structure, a wealth of kinetic data, thousands of chemical ligands and clinical information for the effects of a range of drugs on monoamine oxidase activity in vivo. We have comparative information from various species and mutations on kinetics and effects of inhibition. Nevertheless, there are what seem like simple questions still to be answered. This article presents a brief summary of existing experimental evidence the background and poses questions that remain intriguing for chemists and biochemists researching the chemical enzymology of and drug design for monoamine oxidases (FAD-containing EC 4.1.3.4).
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Mzezewa SC, Omoruyi SI, Zondagh LS, Malan SF, Ekpo OE, Joubert J. Design, synthesis, and evaluation of 3,7-substituted coumarin derivatives as multifunctional Alzheimer's disease agents. J Enzyme Inhib Med Chem 2021; 36:1607-1621. [PMID: 34281458 PMCID: PMC8291583 DOI: 10.1080/14756366.2021.1913137] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Multitarget directed ligands (MTDLs) are emerging as promising treatment options for Alzheimer's disease (AD). Coumarin derivatives serve as a good starting point for designing MTDLs due to their inherent inhibition of monoamine oxidase (MAO) and cholinesterase enzymes, which are complicit in AD's complex pathophysiology. A preliminary series of 3,7-substituted coumarin derivatives were synthesised and evaluated for enzyme inhibitory activity, cytotoxicity as well as neuroprotective ability. The results indicated that the compounds are weak cholinesterase inhibitors with five compounds demonstrating relatively potent inhibition and selectivity towards MAO-B with IC50 values between 0.014 and 0.498 hx00B5;µM. Significant neuroprotective effects towards MPP+-compromised SH-SY5Y neuroblastoma cells were also observed, with no inherent cytotoxicity at 10 µM for all compounds. The overall results demonstrated that substitution of the phenylethyloxy moiety at the 7-position imparted superior general activity to the derivatives, with the propargylamine substitution at the 3-position, in particular, displaying the best MAO-B selectivity and neuroprotection.
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Affiliation(s)
- Sheunopa C Mzezewa
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of the Western Cape, Bellville, South Africa
| | - Sylvester I Omoruyi
- Department of Medical Biosciences, University of the Western Cape, Bellville, South Africa
| | - Luke S Zondagh
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of the Western Cape, Bellville, South Africa
| | - Sarel F Malan
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of the Western Cape, Bellville, South Africa
| | - Okobi E Ekpo
- Department of Medical Biosciences, University of the Western Cape, Bellville, South Africa
| | - Jacques Joubert
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of the Western Cape, Bellville, South Africa
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10
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Jaka O, Iturria I, van der Toorn M, Hurtado de Mendoza J, Latino DARS, Alzualde A, Peitsch MC, Hoeng J, Koshibu K. Effects of Natural Monoamine Oxidase Inhibitors on Anxiety-Like Behavior in Zebrafish. Front Pharmacol 2021; 12:669370. [PMID: 34079463 PMCID: PMC8165606 DOI: 10.3389/fphar.2021.669370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 04/28/2021] [Indexed: 01/28/2023] Open
Abstract
Monoamine oxidases (MAO) are a valuable class of mitochondrial enzymes with a critical role in neuromodulation. In this study, we investigated the effect of natural MAO inhibitors on novel environment-induced anxiety by using the zebrafish novel tank test (NTT). Because zebrafish spend more time at the bottom of the tank when they are anxious, anxiolytic compounds increase the time zebrafish spend at the top of the tank and vice versa. Using this paradigm, we found that harmane, norharmane, and 1,2,3,4-tetrahydroisoquinoline (TIQ) induce anxiolytic-like effects in zebrafish, causing them to spend more time at the top of the test tank and less time at the bottom. 2,3,6-trimethyl-1,4-naphtoquinone (TMN) induced an interesting mix of both anxiolytic- and anxiogenic-like effects during the first and second halves of the test, respectively. TIQ was unique in having no observable effect on general movement. Similarly, a reference MAO inhibitor clorgyline—but not pargyline—increased the time spent at the top in a concentration-dependent manner. We also demonstrated that the brain bioavailability of these compounds are high based on the ex vivo bioavailability assay and in silico prediction models, which support the notion that the observed effects on anxiety-like behavior in zebrafish were most likely due to the direct effect of these compounds in the brain. This study is the first investigation to demonstrate the anxiolytic-like effects of MAO inhibitors on novel environment-induced anxiety in zebrafish.
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Affiliation(s)
- Oihane Jaka
- Biobide, Gipuzkoa Scientific and Technological Park, San Sebastian, Spain
| | - Iñaki Iturria
- Biobide, Gipuzkoa Scientific and Technological Park, San Sebastian, Spain
| | - Marco van der Toorn
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel, Switzerland
| | | | - Diogo A R S Latino
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel, Switzerland
| | - Ainhoa Alzualde
- Biobide, Gipuzkoa Scientific and Technological Park, San Sebastian, Spain
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel, Switzerland
| | - Kyoko Koshibu
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, Neuchâtel, Switzerland
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