1
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Nguyen TH, Tran PT, Pham NQA, Hoang VH, Hiep DM, Ngo ST. Identifying Possible AChE Inhibitors from Drug-like Molecules via Machine Learning and Experimental Studies. ACS OMEGA 2022; 7:20673-20682. [PMID: 35755364 PMCID: PMC9219098 DOI: 10.1021/acsomega.2c00908] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 05/27/2022] [Indexed: 05/30/2023]
Abstract
Acetylcholinesterase (AChE) is one of the most important drug targets for Alzheimer's disease (AD) treatment. In this work, a machine learning model was trained to rapidly and accurately screen large chemical databases for the potential inhibitors of AChE. The obtained results were then validated via in vitro enzyme assay. Moreover, atomistic simulations including molecular docking and molecular dynamics simulations were then used to understand molecular insights into the binding process of ligands to AChE. In particular, two compounds including benzyl trifluoromethyl ketone and trifluoromethylstyryl ketone were indicated as highly potent inhibitors of AChE because they established IC50 values of 0.51 and 0.33 μM, respectively. The obtained IC50 of two compounds is significantly lower than that of galantamine (2.10 μM). The predicted log(BB) suggests that the compounds may be able to traverse the blood-brain barrier. A good agreement between computational and experimental studies was observed, indicating that the hybrid approach can enhance AD therapy.
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Affiliation(s)
- Trung Hai Nguyen
- Laboratory
of Theoretical and Computational Biophysics, Advanced Institute of
Materials Science, Ton Duc Thang
University, Ho Chi Minh City, Vietnam
- Faculty
of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Phuong-Thao Tran
- Hanoi
University of Pharmacy, 13-15 Le Thanh Tong, Hanoi 008404, Vietnam
| | - Ngoc Quynh Anh Pham
- Faculty
of Chemical Engineering, Ho Chi Minh City
University of Technology (HCMUT), Ho Chi Minh City 700000, Vietnam
| | - Van-Hai Hoang
- Faculty
of Pharmacy, Phenikka University, Hanoi 008404, Vietnam
- Phenikka
Institute for Advanced Study, Phenikka University, Hanoi 008404, Vietnam
| | - Dinh Minh Hiep
- Department
of Agriculture and Rural Development, Ho Chi Minh City 700000, Vietnam
| | - Son Tung Ngo
- Laboratory
of Theoretical and Computational Biophysics, Advanced Institute of
Materials Science, Ton Duc Thang
University, Ho Chi Minh City, Vietnam
- Faculty
of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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2
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A Direct OnFlow Assay to Monitor the Activity of Purine Nucleoside Phosphorylase from Mycobacterium tuberculosis. Chromatographia 2022. [DOI: 10.1007/s10337-022-04158-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Seidl C, de Lima JM, Leme GM, Pires AF, Stoll DR, Cardoso CL. A Comprehensive 2D-LC/MS Online Platform for Screening of Acetylcholinesterase Inhibitors. Front Mol Biosci 2022; 9:868597. [PMID: 35372507 PMCID: PMC8967351 DOI: 10.3389/fmolb.2022.868597] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 02/25/2022] [Indexed: 11/18/2022] Open
Abstract
The continuous interest in discovering new bioactive molecules derived from natural products (NP) has stimulated the development of improved screening assays to help overcome challenges in NP-based drug discovery. Here, we describe a unique platform for the online screening of acetylcholinesterase inhibitors without the need for pre-treating the sample. In the current study, we have demonstrated the ability to combine reversed-phase separation with a capillary immobilized enzyme reactor (cIMER) in two-dimensional liquid chromatography system coupled with mass spectrometry detection. We systematically investigated the effects of method parameters that are of practical significance and are known to affect the enzyme assay and interfere in the analysis such as: bioreactor dimensions, loop sizes, amount of immobilized enzyme, second dimension flow rates, reaction time, substrate concentration, presence of organic modifier, limit of detection and signal suppression. The performance of this new platform was evaluated using a mixture containing three known AChE inhibitors (tacrine, galanthamine and donepezil) and an ethanolic extract obtained from the dry bulbs of Hippeastrum calyptratum (Amaryllidaceae) was investigated to provide a proof of concept of the applicability of the platform for the analysis of complex mixtures such as those derived from NPs.
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Affiliation(s)
- Claudia Seidl
- Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Juliana Maria de Lima
- Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Gabriel Mazzi Leme
- SEPARARE Núcleo de Pesquisa Em Cromatografia, Departamento de Química, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Ananda Ferreira Pires
- Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Dwight R. Stoll
- Department of Chemistry, Gustavus Adolphus College, St. Peter, MIN, United States
| | - Carmen Lúcia Cardoso
- Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
- *Correspondence: Carmen Lúcia Cardoso,
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4
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Onder FC, Durdagi S, Kahraman N, Uslu TN, Kandemir H, Atici EB, Ozpolat B, Ay M. Novel inhibitors of eukaryotic elongation factor 2 kinase: In silico, synthesis and in vitro studies. Bioorg Chem 2021; 116:105296. [PMID: 34488125 DOI: 10.1016/j.bioorg.2021.105296] [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: 03/14/2021] [Revised: 08/12/2021] [Accepted: 08/17/2021] [Indexed: 10/20/2022]
Abstract
Eukaryotic elongation factor 2 kinase (eEF2K) is an unusual alpha kinase whose expression is highly upregulated in various cancers and contributes to tumor growth, metastasis, and progression. More importantly, eEF2K expression is associated with poor clinical outcome and shorter patient survival in breast, lung and ovarian cancers. Therefore, eEF2K is an emerging molecular target for development of novel targeted therapeutics and precision medicine in solid cancers. Currently, there are not any available potent and specific eEF2K inhibitors for clinical translation. In this study, we designed and synthesized a series of novel compounds with coumarin scaffold with various substitutions and investigated their effects in inhibiting eEF2K activity using in silico approaches and in vitro studies in breast cancer cells. We utilized an amide substitution at position 3 on the coumarin ring with their pharmacologically active groups containing pyrrolidine, piperidine, morpholine and piperazine groups with (CH2)2 bridged for aliphatic amides. Due to their ability to form covalent binding to the target enzyme, we also investigated the effects of boron containing groups on functionalized coumarin ring (3 compounds) and designed novel aliphatic and aromatic derivatives of coumarin scaffolds (10 compounds) and phenyl ring with boron groups (4 compounds). The Glide/SP module of the Maestro molecular modeling package was used to perform in silico analysis and molecular docking studies. According to our combined results, structure activity relationship (SAR) was performed in detail. Among the newly designed, synthesized, and tested compounds, our in vitro findings revealed that several compounds displayed a highly effective eEF2K inhibition at submicromolar concentrations in in vitro breast cancer cells. In conclusion, we identified novel compounds that can be used as eEF2K inhibitors and that they should be further evaluated by in vivo preclinical tumor models studies for antitumor efficacy and clinical translation.
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Affiliation(s)
- Ferah Comert Onder
- Department of Medical Biology, Faculty of Medicine, Çanakkale Onsekiz Mart University, 17020 Çanakkale, Turkey; Natural Products and Drug Research Laboratory, Department of Chemistry, Faculty of Science and Arts, Çanakkale Onsekiz Mart University, 17020 Çanakkale, Turkey; Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States
| | - Serdar Durdagi
- Computational Biology and Molecular Simulations Laboratory, Department of Biophysics, School of Medicine, Bahcesehir University, 34734 İstanbul, Turkey
| | - Nermin Kahraman
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States
| | - Tugce Nur Uslu
- Department of Chemistry, Tekirdağ Namık Kemal University, Tekirdağ, Turkey
| | - Hakan Kandemir
- Department of Chemistry, Tekirdağ Namık Kemal University, Tekirdağ, Turkey
| | | | - Bulent Ozpolat
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States; Department of Experimental Therapeutics and Center for RNA Interference and Non-Coding RNAs, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, United States.
| | - Mehmet Ay
- Natural Products and Drug Research Laboratory, Department of Chemistry, Faculty of Science and Arts, Çanakkale Onsekiz Mart University, 17020 Çanakkale, Turkey.
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5
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Nguyen NC, Vinh D, Nguyen DT, Nguyen HVT, Tran CL, Tran MH. Development of a Capillary Electrophoretic Method for the Determination of Huperzine A Concentration in Vietnamese Huperzia serrata. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211033225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Huperzine A, isolated from Huperzia serrata, is a potent, specific, and reversible inhibitor of acetylcholinesterase with high efficiency and low toxicity. To evaluate the presence of huperzine A in Vietnamese H serrata, a reliable capillary zone electrophoresis method was developed. The analytical conditions were established using 80 mM ammonium acetate buffer, pH 6.0, hydrodynamic injection at 50 mbar for 5 s, applied voltage of 20 kV, temperature at 25 °C, uncoated fused-silica capillary, 56 cm (50 cm effective length) × 70 µm inner diameter, and ultraviolet detection at 310 nm. The recovery rates ranged from 98.05% to 100.64%, with a relative standard deviation <2%. Good linear regression was observed in the concentration range of 1 to 500 µg/mL, with a correlation coefficient of 0.9994. The limit of detection and limit of quantification were 0.33 and 1.0 µg/mL, respectively. These results demonstrate that this method is simple, selective, and suitable for performing quality control for huperzine A derived from Vietnamese H serrata.
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Affiliation(s)
| | - Dinh Vinh
- University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam
| | - Duc Tuan Nguyen
- University of Medicine and Pharmacy, Ho Chi Minh City, Vietnam
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6
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Moreira NM, Martelli LSR, Corrêa AG. Asymmetric organocatalyzed synthesis of coumarin derivatives. Beilstein J Org Chem 2021; 17:1952-1980. [PMID: 34386105 PMCID: PMC8353592 DOI: 10.3762/bjoc.17.128] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 07/21/2021] [Indexed: 01/01/2023] Open
Abstract
Coumarin derivatives are essential scaffolds in medicinal and synthetic chemistry. Compounds of this class have shown important activities, such as anticancer and antiparasitic, besides the commercially available drugs. These properties led to the development of efficient and greener synthetic methods to achieve the 2H-chromen-2-one core. In this context, the advances in asymmetric organocatalyzed synthesis of coumarin derivatives are discussed in this review, according to the mode of activation of the catalyst.
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Affiliation(s)
- Natália Menezes Moreira
- Centre of Excellence for Research in Sustainable Chemistry, Department of Chemistry, Federal University of São Carlos, 13565-905 São Carlos, SP – Brazil
| | - Lorena Suelen Ribeiro Martelli
- Centre of Excellence for Research in Sustainable Chemistry, Department of Chemistry, Federal University of São Carlos, 13565-905 São Carlos, SP – Brazil
| | - Arlene Gonçalves Corrêa
- Centre of Excellence for Research in Sustainable Chemistry, Department of Chemistry, Federal University of São Carlos, 13565-905 São Carlos, SP – Brazil
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7
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Vilela AFL, Narciso Dos Reis VE, Cardoso CL. Co-Immobilized Capillary Enzyme Reactor Based on Beta-Secretase1 and Acetylcholinesterase: A Model for Dual-Ligand Screening. Front Chem 2021; 9:708374. [PMID: 34307303 PMCID: PMC8295500 DOI: 10.3389/fchem.2021.708374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/23/2021] [Indexed: 11/13/2022] Open
Abstract
We have developed a dual enzymatic system assay involving liquid chromatography-mass spectrometry (LC–MS) to screen AChE and BACE1 ligands. A fused silica capillary (30 cm × 0.1 mm i.d. × 0.362 mm e.d.) was used as solid support. The co-immobilization procedure encompassed two steps and random immobilization. The resulting huAChE+BACE1-ICER/MS was characterized by using acetylcholine (ACh) and JMV2236 as substrates. The best conditions for the dual enzymatic system assay were evaluated and compared to the conditions of the individual enzymatic system assays. Analysis was performed in series for each enzyme. The kinetic parameters (KMapp) and inhibition assays were evaluated. To validate the system, galantamine and a β-secretase inhibitor were employed as standard inhibitors, which confirmed that the developed screening assay was able to identify reference ligands and to provide quantitative parameters. The combination of these two enzymes in a single on-line system allowed possible multi-target inhibitors to be screened and identified. The innovative huAChE+BACE1-ICER/MS dual enzymatic system reported herein proved to be a reliable tool to identify and to characterize hit ligands for AChE and BACE1 in an enzymatic competitive environment. This innovative system assay involved lower costs; measured the product from enzymatic hydrolysis directly by MS; enabled immediate recovery of the enzymatic activity; showed specificity, selectivity, and sensitivity; and mimicked the cellular process.
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Affiliation(s)
- Adriana Ferreira Lopes Vilela
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Vitor Eduardo Narciso Dos Reis
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Carmen Lúcia Cardoso
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
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8
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de Lima JM, Furlani IL, da Silva LRG, Valverde AL, Cass QB. Micro- and nano-sized amine-terminated magnetic beads in a ligand fishing assay. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2020; 12:4116-4122. [PMID: 32766628 DOI: 10.1039/d0ay01269f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Functionalized micro- and nano-sized magnetic beads (MBs) have been widely used as versatile supports for proteins, enzymes, and drugs. Immobilized protein on MB surfaces has been successfully applied for ligand fishing assays allowing for direct identification of active ligands from complex mixtures, such as natural products and synthetic libraries. MBs with different properties such as different core compositions, sizes, coatings, and surface modifications are available commercially. Studies have been conducted to understand the role of these properties for ligand fishing assays. Here we evaluated, for the first time, the effect of MB size on the ligand fishing assay for acetylcholinesterase from Electrophorus electricus (AChE). For this purpose, four commercially available amine-terminated magnetic particles with diameters ranging from 4.5 nm to 106 μm were evaluated to fish out galantamine, a well-known AChE inhibitor, from an aqueous solution. All MBs were efficient at using glutaraldehyde to covalently immobilize AChE. The particles with diameters of about 1 μm (small microparticles) presented a higher protein mass capacity per milligram of particle than did those with diameters of about 4.5 nm (nanoparticles) and those with diameters of about 106 μm (large microparticles). The influence of these supports on the produced AChE-MBs with regards to hydrolysis turnover and ligand fishing was evaluated and is fully discussed.
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Affiliation(s)
- Juliana Maria de Lima
- Separare, Departamento de Química, Universidade Federal de São Carlos, São Carlos, Brazil.
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9
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Rodrigues MVN, Rodrigues-Silva C, Boaventura S, Oliveira ASS, Rath S, Cass QB. On-Flow LC-MS/MS method for screening of xanthine oxidase inhibitors. J Pharm Biomed Anal 2020; 181:113097. [PMID: 31931446 DOI: 10.1016/j.jpba.2020.113097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 12/16/2019] [Accepted: 01/05/2020] [Indexed: 11/15/2022]
Abstract
The screening of compounds is the initial step in research for the development of new drugs. For this reason, the availability of fast and reliable tools for the screening of a large number of compounds becomes essential. Among the therapeutic targets, the enzyme xanthine oxidase (XO) is of great interest for its importance as a biological source of superoxide radicals, which contribute to the oxidative stress on organisms and are involved in many pathological processes. In the present study, we validated a new method using an immobilized capillary enzyme reactor in an LC system directly coupled to triple quadrupole mass spectrometry to screen for XO ligands. The use of mass spectrometry provided selectivity and speed to the system, eliminating the analytical separation step. The Michaelis-Menten constant (KM) value determined for the immobilized enzyme was 14.5 ± 0.4 μmol L-1, which is consistent with the value previously reported for the XO-ICER with UV detection in a 2D LC method. The on-line approach was successfully applied to assay the XO inhibitory activities of thirty isolated compounds from different classes of natural products and provided greater productivity (288 analysis/day) than 2D LC method (84 analysis/day) of screened samples.
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Affiliation(s)
- Marili V N Rodrigues
- Divisão de Química Orgânica e Farmacêutica, Centro Pluridisciplinar de Pesquisas Químicas, Biológicas e Agrícolas -CPQBA, Universidade Estadual de Campinas-UNICAMP, Paulinia, 13148-218, São Paulo, Brazil.
| | - Caio Rodrigues-Silva
- Instituto de Química, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - Sinésio Boaventura
- Divisão de Química Orgânica e Farmacêutica, Centro Pluridisciplinar de Pesquisas Químicas, Biológicas e Agrícolas -CPQBA, Universidade Estadual de Campinas-UNICAMP, Paulinia, 13148-218, São Paulo, Brazil
| | - Adriana S S Oliveira
- Divisão de Química Orgânica e Farmacêutica, Centro Pluridisciplinar de Pesquisas Químicas, Biológicas e Agrícolas -CPQBA, Universidade Estadual de Campinas-UNICAMP, Paulinia, 13148-218, São Paulo, Brazil
| | - Susanne Rath
- Instituto de Química, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - Quezia B Cass
- Departamento de Química, Universidade Federal de São Carlos, Cx. Postal 676, São Carlos, 13565-905, São Paulo, Brazil
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10
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Yuan Y, Zhao M, Riffault-Valois L, Ennahar S, Bergaentzlé M, Marchioni E. Online acetylcholinesterase inhibition evaluation by high-performance liquid chromatography–mass spectrometry hyphenated with an immobilized enzyme reactor. J Chromatogr A 2020; 1609:460506. [DOI: 10.1016/j.chroma.2019.460506] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 08/29/2019] [Accepted: 09/01/2019] [Indexed: 11/28/2022]
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11
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de Moraes MC, Cardoso CL, Cass QB. Solid-Supported Proteins in the Liquid Chromatography Domain to Probe Ligand-Target Interactions. Front Chem 2019; 7:752. [PMID: 31803714 PMCID: PMC6873629 DOI: 10.3389/fchem.2019.00752] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 10/21/2019] [Indexed: 12/11/2022] Open
Abstract
Ligand-target interactions play a central role in drug discovery processes because these interactions are crucial in biological systems. Small molecules-proteins interactions can regulate and modulate protein function and activity through conformational changes. Therefore, bioanalytical tools to screen new ligands have focused mainly on probing ligand-target interactions. These interactions have been evaluated by using solid-supported proteins, which provide advantages like increased protein stability and easier protein extraction from the reaction medium, which enables protein reuse. In some specific approaches, precisely in the ligand fishing assay, the bioanalytical method allows the ligands to be directly isolated from complex mixtures, including combinatorial libraries and natural products extracts without prior purification or fractionation steps. Most of these screening assays are based on liquid chromatography separation, and the binding events can be monitored through on-line or off-line methods. In the on-line approaches, solid supports containing the immobilized biological target are used as chromatographic columns most of the time. Several terms have been used to refer to such approaches, such as weak affinity chromatography, high-performance affinity chromatography, on-flow activity assays, and high-performance liquid affinity chromatography. On the other hand, in the off-line approaches, the binding event occurs outside the liquid chromatography system and may encompass affinity and activity-based assays in which the biological target is immobilized on magnetic particles or monolithic silica, among others. After the incubation step, the supernatant or the eluate from the binding assay is analyzed by liquid chromatography coupled to various detectors. Regardless of the selected bioanalytical approach, the use of solid supported proteins has significantly contributed to the development of automated and reliable screening methods that enable ligands to be isolated and characterized in complex matrixes without purification, thereby reducing costs and avoiding time-laborious steps. This review provides a critical overview of recently developed assays.
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Affiliation(s)
- Marcela Cristina de Moraes
- Laboratório SINCROMA, Instituto de Química, Departamento de Química Orgânica, Universidade Federal Fluminense, Niterói, Brazil
| | - Carmen Lucia Cardoso
- Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | - Quezia Bezerra Cass
- Separare, Departamento de Química, Universidade Federal de São Carlos, São Carlos, Brazil
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12
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de Lima BR, Lima JM, Maciel JB, Valentim CQ, Nunomura RDCS, Lima ES, Koolen HHF, de Souza ADL, Pinheiro MLB, Cass QB, da Silva FMA. Synthesis and Inhibition Evaluation of New Benzyltetrahydroprotoberberine Alkaloids Designed as Acetylcholinesterase Inhibitors. Front Chem 2019; 7:629. [PMID: 31620424 PMCID: PMC6760013 DOI: 10.3389/fchem.2019.00629] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 09/02/2019] [Indexed: 11/13/2022] Open
Abstract
Secondary metabolites from natural products are a potential source of acetylcholinesterase inhibitors (AChEIs), which is a key enzyme in the treatment of many neurodegenerative diseases. Inspired by the reported activities of isoquinoline-derivative alkaloids herein we report the design, one step synthesis and evaluation by capillary enzyme reactor (ICER) of benzyl analogs (1a–1e) of the tetrahydroprotoberberine alkaloid stepholidine, which is abundant in Onychopetalum amazonicum. Docking analysis based on the crystal structure of Torpedo californica AChE (TcAChE) indicated that π-π interactions were dominant in all planned derivatives and that the residues from esteratic, anionic and peripheral subsites of the enzyme played key interaction roles. Due to the similarities observed when compared with galantamine in the AChE complex, the results suggest that ligand-target interactions would increase, especially for the N-benzyl derivatives. From a series of synthesized compounds, the alkaloids (7R,13aS)-7-benzylstepholidine (1a), (7S,13aS)-7-benzylstepholidine (1b), and (S)-10-O-benzylstepholidine (1d) are reported here for the first time. The on flow bioaffinity chromatography inhibition assay, based on the quantification of choline, revealed the N-benzylated compound 1a and its epimer 1b to be the most active, with IC50 of 40.6 ± 1 and 51.9 ± 1 μM, respectively, and a non-competitive mechanism. The proposed approach, which is based on molecular docking and bioaffinity chromatography, demonstrated the usefulness of stepholidine as a template for the design of rational AChEIs and showed how the target-alkaloid derivatives interact with AChE.
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Affiliation(s)
- Bruna R de Lima
- Central Analítica-Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, Manaus, Brazil
| | - Juliana M Lima
- Separare, Departamento de Química, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Jéssica B Maciel
- Central Analítica-Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, Manaus, Brazil
| | | | - Rita de Cássia S Nunomura
- Central Analítica-Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, Manaus, Brazil.,Departamento de Química, Universidade Federal do Amazonas, Manaus, Brazil
| | - Emerson S Lima
- Faculdade de Farmácia, Universidade Federal do Amazonas, Manaus, Brazil
| | - Hector H F Koolen
- Grupo de Pesquisa em Metabolômica e Espectrometria de Massas, Universidade do Estado do Amazonas, Manaus, Brazil
| | - Afonso Duarte L de Souza
- Central Analítica-Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, Manaus, Brazil.,Departamento de Química, Universidade Federal do Amazonas, Manaus, Brazil
| | - Maria Lúcia B Pinheiro
- Central Analítica-Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, Manaus, Brazil.,Departamento de Química, Universidade Federal do Amazonas, Manaus, Brazil
| | - Quezia B Cass
- Separare, Departamento de Química, Universidade Federal de São Carlos, São Carlos, Brazil
| | - Felipe Moura A da Silva
- Central Analítica-Centro de Apoio Multidisciplinar, Universidade Federal do Amazonas, Manaus, Brazil
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13
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Medina RP, Araujo AR, Batista JM, Cardoso CL, Seidl C, Vilela AFL, Domingos HV, Costa-Lotufo LV, Andersen RJ, Silva DHS. Botryane terpenoids produced by Nemania bipapillata, an endophytic fungus isolated from red alga Asparagopsis taxiformis - Falkenbergia stage. Sci Rep 2019; 9:12318. [PMID: 31444403 PMCID: PMC6707159 DOI: 10.1038/s41598-019-48655-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 08/08/2019] [Indexed: 01/01/2023] Open
Abstract
A chemical study of the EtOAc extract of Nemania bipapillata (AT-05), an endophytic fungus isolated from the marine red alga Asparagopsis taxiformis - Falkenbergia stage, led to the isolation of five new botryane sesquiterpenes, including the diastereomeric pair (+)-(2R,4S,5R,8S)-(1) and (+)-(2R,4R,5R,8S)-4-deacetyl-5-hydroxy-botryenalol (2), (+)-(2R,4S,5R,8R)-4-deacetyl-botryenalol (3), one pair of diastereomeric botryane norsesquiterpenes bearing an unprecedented degraded carbon skeleton, (+)-(2R,4R,8R)-(4) and (+)-(2R,4S,8S)-(5), which were named nemenonediol A and nemenonediol B, respectively, in addition to the known 4β-acetoxy-9β,10β,15α-trihydroxyprobotrydial (6). Their structures were elucidated using 1D and 2D NMR, HRESIMS and comparison with literature data of similar known compounds. The absolute configurations of 2, 3 and 4 were deduced by comparison of experimental and calculated electronic circular dichroism (ECD) spectra, while those of 1 and 5 were assigned from vibrational circular dichroism (VCD) data. Compound 4 weakly inhibited acetylcholinesterase, whereas compound 1 inhibited both acetylcholinesterase and butyrylcholinesterase. Compounds 1, 3, 5 and 6 were tested against two carcinoma cell lines (MCF-7 and HCT-116), but showed no significant citotoxicity at tested concentrations (IC50 > 50 µM).
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Affiliation(s)
- Rebeca P Medina
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Departamento de Química Orgânica, Instituto de Química, UNESP - Universidade Estadual Paulista, 14801-970, Araraquara-SP, Brazil
| | - Angela R Araujo
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Departamento de Química Orgânica, Instituto de Química, UNESP - Universidade Estadual Paulista, 14801-970, Araraquara-SP, Brazil
| | - João M Batista
- Departamento de Química, Centro de Ciências Exatas e de Tecnologia, Universidade Federal de São Carlos - UFSCar, 13565-905, São Carlos-SP, Brazil.,Departamento de Ciência e Tecnologia, Universidade Federal de São Paulo -UNIFESP, 12231-280, São José dos Campos-SP, Brazil
| | - Carmen L Cardoso
- Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto-SP, Brazil
| | - Cláudia Seidl
- Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto-SP, Brazil
| | - Adriana F L Vilela
- Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto-SP, Brazil
| | - Helori V Domingos
- Instituto de Ciências Biomédicas, Universidade de São Paulo, 05508-900, São Paulo-SP, Brazil
| | - Leticia V Costa-Lotufo
- Instituto de Ciências Biomédicas, Universidade de São Paulo, 05508-900, São Paulo-SP, Brazil
| | - Raymond J Andersen
- Departments of Chemistry and Earth, Ocean & Atmospheric Sciences, University of British Columbia, V6T 1Z1, Vancouver, BC, Canada
| | - Dulce H S Silva
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Departamento de Química Orgânica, Instituto de Química, UNESP - Universidade Estadual Paulista, 14801-970, Araraquara-SP, Brazil.
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Acetylcholinesterases from Leaf-Cutting ant Atta sexdens: Purification, Characterization, and Capillary Reactors for On-Flow Assays. Enzyme Res 2019; 2019:6139863. [PMID: 31354985 PMCID: PMC6633970 DOI: 10.1155/2019/6139863] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 05/12/2019] [Indexed: 02/08/2023] Open
Abstract
Acetylcholinesterase (AChE) is responsible for catalyzing the hydrolysis of the neurotransmitter acetylcholine (ACh) leading to acetate and choline (Ch) release. The inhibition of AChE produces a generalized synaptic collapse that can lead to insect death. Herein we report for the first time the isolation of two AChEs from Atta sexdens which were purified by sulphate ammonium precipitation followed by ion exchange chromatography. AsAChE-A and AsAChE-B enzymes have optimum pH of 9.5 and 9.0 and higher activities in 30/50°C and 20°C, respectively, using acetylthiocholine (ATCh) as substrate. Immobilized capillary enzyme reactors (ICERs) were obtained for both enzymes (AsAChE-A-ICER and AsAChE-B-ICER) and their activities were measured by LC-MS/MS through hydrolysis product quantification of the natural substrate ACh. The comparison of activities by LC-MS/MS of both AChEs using ACh as substrate showed that AsAChE-B (free or immobilized) had the highest affinity. The inverse result was observed when the colorimetric assay (Elman method) was used for ATCh as substrate. Moreover, by mass spectrometry and phylogenetic studies, AsAChE-A and AsAChE-B were classified as belonging to AChE-2 and AChE-1 classes, respectively.
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Seidl C, Vilela AFL, Lima JM, Leme GM, Cardoso CL. A novel on-flow mass spectrometry-based dual enzyme assay. Anal Chim Acta 2019; 1072:81-86. [PMID: 31146868 DOI: 10.1016/j.aca.2019.04.057] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 03/28/2019] [Accepted: 04/25/2019] [Indexed: 11/16/2022]
Abstract
This work describes a new simultaneous on-flow dual parallel enzyme assay based on immobilized enzyme reactors (ICERs) with mass spectrometry detection. The novelty of this work relies on the fact that two different enzymes can be screened at the same time with only one single sample injection and in less than 6 min. The system consisted of two immobilized capillary enzyme reactors (ICERs). More specifically, the ICERs comprised two different enzymes that were accommodated in parallel and were placed between a liquid chromatography (LC) system and a mass spectrometer (MS). The resulting system could be adapted to other types of enzyme reactors with different supports. All the elements in the system were interfaced by means of two 10-port/two-position switching valves. Different tubing dimensions allowed us to monitor the activity of each enzyme independently during the same analysis. Acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) bioreactors were chosen as proof of concept. Acetylcholine (ACh) was used as substrate; the area of its protonated enzymatic hydrolysis product ion, choline, [M+H]+m/z 104.0, was monitored in the presence and absence of the standard cholinesterase inhibitor galantamine. This method proved to be an interesting tool for fast, simultaneous, and independent label-free dual enzyme inhibitor assay.
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Affiliation(s)
- Claudia Seidl
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-90, Brazil
| | - Adriana Ferreira Lopes Vilela
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-90, Brazil
| | - Juliana Maria Lima
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-90, Brazil
| | - Gabriel Mazzi Leme
- SEPARARE Núcleo de Pesquisa Em Cromatografia, Departamento de Química, Universidade Federal de São Carlos, Caixa Postal 676, São Carlos, 13565-905, Brazil
| | - Carmen Lúcia Cardoso
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-90, Brazil.
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Guo J, Lin H, Wang J, Lin Y, Zhang T, Jiang Z. Recent advances in bio-affinity chromatography for screening bioactive compounds from natural products. J Pharm Biomed Anal 2019; 165:182-197. [DOI: 10.1016/j.jpba.2018.12.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 12/01/2018] [Accepted: 12/07/2018] [Indexed: 01/02/2023]
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17
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Immobilized Enzyme Reactors: an Overview of Applications in Drug Discovery from 2008 to 2018. Chromatographia 2018. [DOI: 10.1007/s10337-018-3663-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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18
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Wang L, Zhao Y, Zhang Y, Zhang T, Kool J, Somsen GW, Wang Q, Jiang Z. Online screening of acetylcholinesterase inhibitors in natural products using monolith-based immobilized capillary enzyme reactors combined with liquid chromatography-mass spectrometry. J Chromatogr A 2018; 1563:135-143. [DOI: 10.1016/j.chroma.2018.05.069] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/26/2018] [Accepted: 05/29/2018] [Indexed: 12/18/2022]
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Tanoli NU, Tanoli SAK, Ferreira AG, Mehmood M, Gul S, Monteiro JL, Vieira LCC, Venâncio T, Correa AG, Ul-Haq Z. Characterization of the interactions between coumarin-derivatives and acetylcholinesterase: Examination by NMR and docking simulations. J Mol Model 2018; 24:207. [PMID: 30008113 DOI: 10.1007/s00894-018-3751-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/03/2018] [Indexed: 12/17/2022]
Abstract
Alzheimer's disease (AD) is one of the most common forms of dementia and a significant threat to the elderly populations, especially in the Western world. The rapid hydrolysis of the principal neurotransmitter into choline and acetate by acetylcholinesterase (AChE) at synapses causes the loss of cognitive response that becomes the real cause of AD. Therefore, inhibition of AChE is the most fundamental therapy among currently available treatments for AD. In this context, we designed and performed molecular recognitions studies of coumarin-based inhibitors towards AChE. STD NMR and Tr-NOESY applications were utilized to evaluate the binding epitope, the dissociation constant (KD) and bound conformations of these inhibitors within this inhibitor-AChE complex. Compound 1, which has a similar inhibition activity to tacrine (a current drug) led in this study as a stronger binder with KD = 30 μM ,even greater than tacrine (KD = 140 μM). Moreover, docking simulations mimic NMR results and provided evidence of synchronizing binding of compound 1 with three sites; the peripheral anionic site, the bottom of the gorge, and the catalytic site. Therefore, we envisioned from our experimental and theoretical results that coumarin-based inhibitors containing a piperidinyl scaffold might be a potential drug candidates for AD in the future.
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Affiliation(s)
- Nazish U Tanoli
- Department of Metallurgy and Materials Engneering, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Lehtrar Road, Nilore, Islamabad, 45650, Pakistan.
- Laboratory of Nuclear Magnetic Resonance, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, São Carlos, SP, 13565-905, Brazil.
| | - Sheraz A K Tanoli
- Laboratory of Nuclear Magnetic Resonance, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, São Carlos, SP, 13565-905, Brazil.
| | - Antonio G Ferreira
- Laboratory of Nuclear Magnetic Resonance, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, São Carlos, SP, 13565-905, Brazil
| | - Mazhar Mehmood
- Department of Metallurgy and Materials Engneering, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Lehtrar Road, Nilore, Islamabad, 45650, Pakistan
| | - Sana Gul
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemicals and Biological Sciences, University of Karachi, Karachi, 75210, Pakistan
| | - Julia L Monteiro
- Laboratory of Synthesis of Natural Products, Department of Chemistry, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil
| | - Lucas C C Vieira
- Laboratory of Synthesis of Natural Products, Department of Chemistry, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil
| | - Tiago Venâncio
- Laboratory of Nuclear Magnetic Resonance, Federal University of São Carlos, Rodovia Washington Luiz, Km 235, São Carlos, SP, 13565-905, Brazil
| | - Arlene G Correa
- Laboratory of Synthesis of Natural Products, Department of Chemistry, Federal University of São Carlos, São Carlos, SP, 13565-905, Brazil
| | - Zaheer Ul-Haq
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemicals and Biological Sciences, University of Karachi, Karachi, 75210, Pakistan
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20
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Vanzolini K, da F. Sprenger R, Leme G, de S. Moraes V, Vilela A, Cardoso C, Cass Q. Acetylcholinesterase affinity-based screening assay on Lippia gracilis Schauer extracts. J Pharm Biomed Anal 2018; 153:232-237. [DOI: 10.1016/j.jpba.2018.02.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/14/2018] [Accepted: 02/17/2018] [Indexed: 11/25/2022]
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21
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Vilela AFL, Seidl C, Lima JM, Cardoso CL. An improved immobilized enzyme reactor-mass spectrometry-based label free assay for butyrylcholinesterase ligand screening. Anal Biochem 2018; 549:53-57. [PMID: 29550345 DOI: 10.1016/j.ab.2018.03.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 03/08/2018] [Accepted: 03/12/2018] [Indexed: 02/02/2023]
Abstract
Acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) are key cholinesterase enzymes responsible for the hydrolysis of acetylcholine into choline and acetic acid, an essential process for the restoration of the cholinergic neuron. The loss of cholinergic function in the central nervous system contributes to the cognitive decline associated with advanced age and Alzheimer's disease (AD). Inhibitions assays represent a significant role in the drug discovery process. Herein, we describe an improved label free method to screen and characterize new BChE ligands. The liquid chromatography system uses an immobilized capillary enzyme reactor (ICER) as a low affinity and high selectivity column coupled to a mass spectrometer (MS). The enzyme activity was evaluated by monitoring the choline's precursor ion [M + H]+m/z 104 for a brief period. The method was validated using two known cholinesterase inhibitors tacrine and galanthamine. The IC50 values were 0.03 ± 0.006 μM and 0.88 ± 0.2 for tacrine and galanthamine respectively, and Ki was 0.11 ± 0.2 for galanthamine. The efficient combination of the huBChE-ICER with sensitive enzymatic assay detection such as MS, improved the reliable, fast identification of new ligands. Moreover, specific direct quantitation of the product contributes to the reduction of false positive and negative results.
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Affiliation(s)
- Adriana Ferreira Lopes Vilela
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - Cláudia Seidl
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - Juliana Maria Lima
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - Carmen Lúcia Cardoso
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil.
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22
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Cathepsin D immobilized capillary reactors for on-flow screening assays. J Pharm Biomed Anal 2018; 151:252-259. [DOI: 10.1016/j.jpba.2018.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 12/29/2017] [Accepted: 01/01/2018] [Indexed: 11/16/2022]
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23
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In Vitro Evaluation of Serine Hydrolase Inhibitors. METHODS IN PHARMACOLOGY AND TOXICOLOGY 2018. [DOI: 10.1007/7653_2018_11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Monteiro AF, Seidl C, Severino VGP, Cardoso CL, Castro-Gamboa I. Biotransformation of labdane and halimane diterpenoids by two filamentous fungi strains. ROYAL SOCIETY OPEN SCIENCE 2017. [PMID: 29291077 DOI: 10.5061/dryad.fb7r5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Biotransformation of natural products by filamentous fungi is a powerful and effective approach to achieve derivatives with valuable new chemical and biological properties. Although diterpenoid substrates usually exhibit good susceptibility towards fungi enzymes, there have been no studies concerning the microbiological transformation of halimane-type diterpenoids up to now. In this work, we investigated the capability of Fusarium oxysporum (a fungus isolated from the rhizosphere of Senna spectabilis) and Myrothecium verrucaria (an endophyte) to transform halimane (1) and labdane (2) acids isolated from Hymenaea stigonocarpa (Fabaceae). Feeding experiments resulted in the production of six derivatives, including hydroxy, oxo, formyl and carboxy analogues. Incubation of 1 with F. oxysporum afforded 2-oxo-derivative (3), while bioconversion with M. verrucaria provided 18,19-dihydroxy (4), 18-formyl (5) and 18-carboxy (6) bioproducts. Transformation of substrate 2 mediated by F. oxysporum produced a 7α-hydroxy (7) derivative, while M. verrucaria yielded 7α- (7) and 3β-hydroxy (8) metabolites. Unlike F. oxysporum, which showed a preference to transform ring B, M. verrucaria exhibited the ability to hydroxylate both rings A and B from substrate 2. Additionally, compounds 1-8 were evaluated for inhibitory activity against Hr-AChE and Hu-BChE enzymes through ICER-IT-MS/MS assay.
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Affiliation(s)
- Afif F Monteiro
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgânica, Francisco Degni 55, Araraquara, 14800-900, Brazil
| | - Cláudia Seidl
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-901, São Paulo, Brazil
| | - Vanessa G P Severino
- Universidade Federal de Goiás (UFG), Instituto de Química, Campus Samambaia, Goiânia, 74690-900, Brazil
| | - Carmen Lúcia Cardoso
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-901, São Paulo, Brazil
| | - Ian Castro-Gamboa
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgânica, Francisco Degni 55, Araraquara, 14800-900, Brazil
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Monteiro AF, Seidl C, Severino VGP, Cardoso CL, Castro-Gamboa I. Biotransformation of labdane and halimane diterpenoids by two filamentous fungi strains. ROYAL SOCIETY OPEN SCIENCE 2017; 4:170854. [PMID: 29291077 PMCID: PMC5717651 DOI: 10.1098/rsos.170854] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 10/10/2017] [Indexed: 06/07/2023]
Abstract
Biotransformation of natural products by filamentous fungi is a powerful and effective approach to achieve derivatives with valuable new chemical and biological properties. Although diterpenoid substrates usually exhibit good susceptibility towards fungi enzymes, there have been no studies concerning the microbiological transformation of halimane-type diterpenoids up to now. In this work, we investigated the capability of Fusarium oxysporum (a fungus isolated from the rhizosphere of Senna spectabilis) and Myrothecium verrucaria (an endophyte) to transform halimane (1) and labdane (2) acids isolated from Hymenaea stigonocarpa (Fabaceae). Feeding experiments resulted in the production of six derivatives, including hydroxy, oxo, formyl and carboxy analogues. Incubation of 1 with F. oxysporum afforded 2-oxo-derivative (3), while bioconversion with M. verrucaria provided 18,19-dihydroxy (4), 18-formyl (5) and 18-carboxy (6) bioproducts. Transformation of substrate 2 mediated by F. oxysporum produced a 7α-hydroxy (7) derivative, while M. verrucaria yielded 7α- (7) and 3β-hydroxy (8) metabolites. Unlike F. oxysporum, which showed a preference to transform ring B, M. verrucaria exhibited the ability to hydroxylate both rings A and B from substrate 2. Additionally, compounds 1-8 were evaluated for inhibitory activity against Hr-AChE and Hu-BChE enzymes through ICER-IT-MS/MS assay.
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Affiliation(s)
- Afif F. Monteiro
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgânica, Francisco Degni 55, Araraquara, 14800-900, Brazil
| | - Cláudia Seidl
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-901, São Paulo, Brazil
| | - Vanessa G. P. Severino
- Universidade Federal de Goiás (UFG), Instituto de Química, Campus Samambaia, Goiânia, 74690-900, Brazil
| | - Carmen Lúcia Cardoso
- Departamento de Química, Grupo de Cromatografia de Bioafinidade e Produtos Naturais, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, 14040-901, São Paulo, Brazil
| | - Ian Castro-Gamboa
- Núcleo de Bioensaios, Biossíntese e Ecofisiologia de Produtos Naturais (NuBBE), Universidade Estadual Paulista (UNESP), Instituto de Química, Departamento de Química Orgânica, Francisco Degni 55, Araraquara, 14800-900, Brazil
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26
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Darras FH, Pang YP. On the use of the experimentally determined enzyme inhibition constant as a measure of absolute binding affinity. Biochem Biophys Res Commun 2017; 489:451-454. [DOI: 10.1016/j.bbrc.2017.05.168] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 05/29/2017] [Indexed: 10/19/2022]
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27
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Vanzolini KL, Vieira LCC, Corrêa AG, Moaddel R, Cass QB. Acetylcholinesterase immobilized on modified magnetic beads as a tool for screening a compound library. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1562-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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28
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Rodrigues MVN, Corrêa RS, Vanzolini KL, Santos DS, Batista AA, Cass QB. Characterization and screening of tight binding inhibitors of xanthine oxidase: an on-flow assay. RSC Adv 2015. [DOI: 10.1039/c5ra01741f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
On-flow characterization of tight binders of xanthine oxidase.
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Affiliation(s)
- M. V. N. Rodrigues
- Centro Pluridisciplinar de Pesquisas Químicas
- Biológicas e Agrícolas
- Universidade Estadual de Campinas
- Paulínia 13140-000
- Brazil
| | - R. S. Corrêa
- Departamento de Química
- Universidade Federal de São Carlos
- São Carlos
- Brazil
| | - K. L. Vanzolini
- Departamento de Química
- Universidade Federal de São Carlos
- São Carlos
- Brazil
| | - D. S. Santos
- Instituto Nacional de Ciência e Tecnologia em Tuberculose
- Centro de Pesquisas em Biologia Molecular e Funcional
- Pontifícia Universidade Católica do Rio Grande do Sul
- Porto Alegre
- Brazil
| | - A. A. Batista
- Departamento de Química
- Universidade Federal de São Carlos
- São Carlos
- Brazil
| | - Q. B. Cass
- Departamento de Química
- Universidade Federal de São Carlos
- São Carlos
- Brazil
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29
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Kanchithalaivan S, Sumesh RV, Kumar RR. Ultrasound-assisted sequential multicomponent strategy for the combinatorial synthesis of novel coumarin hybrids. ACS COMBINATORIAL SCIENCE 2014; 16:566-72. [PMID: 25133700 DOI: 10.1021/co500092b] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The present investigation reports an easy access to a library of novel spiro-oxindole-pyrrolizine or pyrrolo[1,2-c]thiazole fused coumarin hybrid heterocycles through a one-pot sequential four-component reactions of 2,2-dimethyl-1,3-dioxane-4,6-dione, salicylaldehydes, isatins, and cyclic α-amino acids under ultrasound irradiation.
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Affiliation(s)
- Selvaraj Kanchithalaivan
- Department of Organic Chemistry,
School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu India
| | - Remani Vasudevan Sumesh
- Department of Organic Chemistry,
School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu India
| | - Raju Ranjith Kumar
- Department of Organic Chemistry,
School of Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu India
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30
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Immobilized cholinesterases capillary reactors on-flow screening of selective inhibitors. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 968:87-93. [DOI: 10.1016/j.jchromb.2013.11.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Revised: 11/14/2013] [Accepted: 11/17/2013] [Indexed: 11/17/2022]
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31
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Forsberg EM, Sicard C, Brennan JD. Solid-phase biological assays for drug discovery. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2014; 7:337-359. [PMID: 25000820 DOI: 10.1146/annurev-anchem-071213-020241] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the past 30 years, there has been a significant growth in the use of solid-phase assays in the area of drug discovery, with a range of new assays being used for both soluble and membrane-bound targets. In this review, we provide some basic background to typical drug targets and immobilization protocols used in solid-phase biological assays (SPBAs) for drug discovery, with emphasis on particularly labile biomolecular targets such as kinases and membrane-bound receptors, and highlight some of the more recent approaches for producing protein microarrays, bioaffinity columns, and other devices that are central to small molecule screening by SPBA. We then discuss key applications of such assays to identify drug leads, with an emphasis on the screening of mixtures. We conclude by highlighting specific advantages and potential disadvantages of SPBAs, particularly as they relate to particular assay formats.
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Affiliation(s)
- Erica M Forsberg
- Biointerfaces Institute, McMaster University, Hamilton, Ontario L8S 4L8, Canada;
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32
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Liu W, Yang Y, Cheng X, Gong C, Li S, He D, Yang L, Wang Z, Wang C. Rapid and sensitive detection of the inhibitive activities of acetyl- and butyryl-cholinesterases inhibitors by UPLC–ESI-MS/MS. J Pharm Biomed Anal 2014; 94:215-20. [DOI: 10.1016/j.jpba.2014.02.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Revised: 02/04/2014] [Accepted: 02/10/2014] [Indexed: 10/25/2022]
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33
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de Moraes MC, Vanzolini KL, Cardoso CL, Cass QB. New trends in LC protein ligand screening. J Pharm Biomed Anal 2014; 87:155-66. [DOI: 10.1016/j.jpba.2013.07.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 07/11/2013] [Accepted: 07/12/2013] [Indexed: 10/26/2022]
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34
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Vanzolini KL, Jiang Z, Zhang X, Vieira LCC, Corrêa AG, Cardoso CL, Cass QB, Moaddel R. Acetylcholinesterase immobilized capillary reactors coupled to protein coated magnetic beads: a new tool for plant extract ligand screening. Talanta 2013; 116:647-52. [PMID: 24148457 PMCID: PMC3826612 DOI: 10.1016/j.talanta.2013.07.046] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 07/19/2013] [Accepted: 07/22/2013] [Indexed: 10/26/2022]
Abstract
The use of immobilized capillary enzyme reactors (ICERs) and enzymes coated to magnetic beads ((NT or CT)-MB) for ligand screening has been adopted as a new technique of high throughput screening (HTS). In this work the selected target was the enzyme acetylcholinesterase (AChE), which acts on the central nervous system and is a validated target for the treatment of Alzheimer's disease, as well as for new insecticides. A new approach for the screening of plant extracts was developed based on the ligand fishing experiments and zonal chromatography. For that, the magnetic beads were used for the ligand fishing experiments and capillary bioreactors for the activity assays. The latter was employed also under non-linear conditions to determine the affinity constants of known ligands, for the first time, as well as for the active fished ligand.
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Affiliation(s)
- Kenia Lourenço Vanzolini
- Departamento de Química, Universidade Federal de São Carlos, caixa postal 676, São Carlos 13565-905, Brazil
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Baltimore, MD 21224, USA
| | - Zhengjin Jiang
- Department of Pharmacy and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine & New Drug Research, Jinan University, Guangzhou 510632, China
| | - Xiaoqi Zhang
- Department of Pharmacy and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine & New Drug Research, Jinan University, Guangzhou 510632, China
| | | | - Arlene Gonçalvez Corrêa
- Departamento de Química, Universidade Federal de São Carlos, caixa postal 676, São Carlos 13565-905, Brazil
| | - Carmen Lucia Cardoso
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, 14040-901 SP, Brazil
| | - Quezia Bezerra Cass
- Departamento de Química, Universidade Federal de São Carlos, caixa postal 676, São Carlos 13565-905, Brazil
| | - Ruin Moaddel
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Baltimore, MD 21224, USA
- Department of Pharmacy and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine & New Drug Research, Jinan University, Guangzhou 510632, China
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35
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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] [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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36
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Topczewski JJ, Lodge AM, Yasapala SN, Payne MK, Keshavarzi PM, Quinn DM. Reversible inhibition of human acetylcholinesterase by methoxypyridinium species. Bioorg Med Chem Lett 2013; 23:5786-9. [PMID: 24076173 DOI: 10.1016/j.bmcl.2013.09.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 08/30/2013] [Accepted: 09/03/2013] [Indexed: 11/29/2022]
Abstract
The irreversible inhibition of acetylcholinesterase (AChE) by organophosphorous chemical warfare agents necessitates that antidotes be administered for effective treatment. Currently no antidote is known that resurrects the phosphyl-AChE complex once aging has occurred. This report characterizes the affinities of over 30 new AChE inhibitors which could act as resurrecting agents for the aged AChE-OP adduct.
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Affiliation(s)
- Joseph J Topczewski
- Department of Chemistry, The University of Iowa, Iowa City, IA 52242, United States
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