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Bellera CL, Talevi A. Quantitative structure-activity relationship models for compounds with anticonvulsant activity. Expert Opin Drug Discov 2019; 14:653-665. [PMID: 31072145 DOI: 10.1080/17460441.2019.1613368] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Introduction: Third-generation antiepileptic drugs have seemingly failed to improve the global figures of seizure control and can still be regarded as symptomatic treatments. Quantitative structure-activity relationships (QSAR) can be used to guide hit-to-lead and lead optimization projects and applied to the large-scale virtual screening of chemical libraries. Areas covered: In this review, the authors cover reports on QSAR models related to antiepileptic drugs and drug targets in epilepsy, analyzing whether they refer to classic or non-classic QSAR and if they apply QSAR as a descriptive or predictive approach, among other considerations. The article finally focuses on a more detailed discussion of those predictive studies which include some sort of experimental validation, i.e. papers in which the reported models have been used to identify novel active compounds which have been tested in vitro and/or in vivo. Expert opinion: There are significant opportunities to apply the QSAR methodology to assist the discovery of more efficacious antiepileptic drugs. Considering the intrinsic complexity of the disorder, such applications should focus on state-of-the-art approximations (e.g. systemic, multi-target and multi-scale QSAR as well as ensemble and deep learning) and modeling the effects on novel drug targets and modern screening tools.
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Affiliation(s)
- Carolina L Bellera
- a Laboratory of Bioactive Research and Development (LIDeB), Department of Biological Sciences, Faculty of Exact Sciences , University of La Plata (UNLP) , La Plata, Buenos Aires , Argentina.,b CCT La Plata , Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) , Buenos Aires , Argentina
| | - Alan Talevi
- a Laboratory of Bioactive Research and Development (LIDeB), Department of Biological Sciences, Faculty of Exact Sciences , University of La Plata (UNLP) , La Plata, Buenos Aires , Argentina.,b CCT La Plata , Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) , Buenos Aires , Argentina
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Palestro PH, Enrique N, Goicoechea S, Villalba ML, Sabatier LL, Martin P, Milesi V, Bruno Blanch LE, Gavernet L. Searching for New Leads To Treat Epilepsy: Target-Based Virtual Screening for the Discovery of Anticonvulsant Agents. J Chem Inf Model 2018; 58:1331-1342. [PMID: 29870230 DOI: 10.1021/acs.jcim.7b00721] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The purpose of this investigation is to contribute to the development of new anticonvulsant drugs to treat patients with refractory epilepsy. We applied a virtual screening protocol that involved the search into molecular databases of new compounds and known drugs to find small molecules that interact with the open conformation of the Nav1.2 pore. As the 3D structure of human Nav1.2 is not available, we first assembled 3D models of the target, in closed and open conformations. After the virtual screening, the resulting candidates were submitted to a second virtual filter, to find compounds with better chances of being effective for the treatment of P-glycoprotein (P-gp) mediated resistant epilepsy. Again, we built a model of the 3D structure of human P-gp, and we validated the docking methodology selected to propose the best candidates, which were experimentally tested on Nav1.2 channels by patch clamp techniques and in vivo by the maximal electroshock seizure (MES) test. Patch clamp studies allowed us to corroborate that our candidates, drugs used for the treatment of other pathologies like Ciprofloxacin, Losartan, and Valsartan, exhibit inhibitory effects on Nav1.2 channel activity. Additionally, a compound synthesized in our lab, N, N'-diphenethylsulfamide, interacts with the target and also triggers significant Na1.2 channel inhibitory action. Finally, in vivo studies confirmed the anticonvulsant action of Valsartan, Ciprofloxacin, and N, N'-diphenethylsulfamide.
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Affiliation(s)
- Pablo H Palestro
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences , National University of La Plata , 47 and 115 , La Plata , Buenos Aires B1900BJW , Argentina
| | - Nicolas Enrique
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP, CONICET-Universidad Nacional de la Plata), Fac. de Ciencias Exactas , Universidad Nacional de La Plata , La Plata , Buenos Aires B1900BJW , Argentina
| | - Sofia Goicoechea
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences , National University of La Plata , 47 and 115 , La Plata , Buenos Aires B1900BJW , Argentina
| | - Maria L Villalba
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences , National University of La Plata , 47 and 115 , La Plata , Buenos Aires B1900BJW , Argentina
| | - Laureano L Sabatier
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences , National University of La Plata , 47 and 115 , La Plata , Buenos Aires B1900BJW , Argentina
| | - Pedro Martin
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP, CONICET-Universidad Nacional de la Plata), Fac. de Ciencias Exactas , Universidad Nacional de La Plata , La Plata , Buenos Aires B1900BJW , Argentina
| | - Veronica Milesi
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP, CONICET-Universidad Nacional de la Plata), Fac. de Ciencias Exactas , Universidad Nacional de La Plata , La Plata , Buenos Aires B1900BJW , Argentina
| | - Luis E Bruno Blanch
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences , National University of La Plata , 47 and 115 , La Plata , Buenos Aires B1900BJW , Argentina
| | - Luciana Gavernet
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences , National University of La Plata , 47 and 115 , La Plata , Buenos Aires B1900BJW , Argentina
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Gantner ME, Peroni RN, Morales JF, Villalba ML, Ruiz ME, Talevi A. Development and Validation of a Computational Model Ensemble for the Early Detection of BCRP/ABCG2 Substrates during the Drug Design Stage. J Chem Inf Model 2017; 57:1868-1880. [DOI: 10.1021/acs.jcim.7b00016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Melisa E. Gantner
- Laboratorio
de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento
de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP) − Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), La Plata, B1900AJI Buenos Aires, Argentina
| | - Roxana N. Peroni
- Instituto
de Investigaciones Farmacológicas (ININFA UBA-CONICET), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín
956 5°, 1113 Ciudad Autónoma de Buenos Aires, Argentina
| | - Juan F. Morales
- Laboratorio
de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento
de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP) − Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), La Plata, B1900AJI Buenos Aires, Argentina
| | - María L. Villalba
- Laboratorio
de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento
de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP) − Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), La Plata, B1900AJI Buenos Aires, Argentina
| | - María E. Ruiz
- Laboratorio
de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento
de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP) − Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), La Plata, B1900AJI Buenos Aires, Argentina
| | - Alan Talevi
- Laboratorio
de Investigación y Desarrollo de Bioactivos (LIDeB), Departamento
de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP) − Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), La Plata, B1900AJI Buenos Aires, Argentina
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Talevi A. Computational approaches for innovative antiepileptic drug discovery. Expert Opin Drug Discov 2016; 11:1001-16. [DOI: 10.1080/17460441.2016.1216965] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Uhlig C, Krause H, Koch T, Gama de Abreu M, Spieth PM. Anesthesia and Monitoring in Small Laboratory Mammals Used in Anesthesiology, Respiratory and Critical Care Research: A Systematic Review on the Current Reporting in Top-10 Impact Factor Ranked Journals. PLoS One 2015; 10:e0134205. [PMID: 26305700 PMCID: PMC4549323 DOI: 10.1371/journal.pone.0134205] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 07/07/2015] [Indexed: 11/19/2022] Open
Abstract
RATIONALE This study aimed to investigate the quality of reporting of anesthesia and euthanasia in experimental studies in small laboratory mammals published in the top ten impact factor journals. METHODS A descriptive systematic review was conducted and data was abstracted from the ten highest ranked journals with respect to impact factor in the categories 'Anesthesiology', 'Critical Care Medicine' and 'Respiratory System' as defined by the 2012 Journal Citation Reports. Inclusion criteria according to PICOS criteria were as follows: 1) population: small laboratory mammals; 2) intervention: any form of anesthesia and/or euthanasia; 3) comparison: not specified; 4) primary outcome: type of anesthesia, anesthetic agents and type of euthanasia; secondary outcome: animal characteristics, monitoring, mechanical ventilation, fluid management, postoperative pain therapy, animal care approval, sample size calculation and performed interventions; 5) study: experimental studies. Anesthesia, euthanasia, and monitoring were analyzed per performed intervention in each article. RESULTS The search yielded 845 articles with 1,041 interventions of interest. Throughout the manuscripts we found poor quality and frequency of reporting with respect to completeness of data on animal characteristics as well as euthanasia, while anesthesia (732/1041, 70.3%) and interventions without survival (970/1041, 93.2%) per se were frequently reported. Premedication and neuromuscular blocking agents were reported in 169/732 (23.1%) and 38/732 (5.2%) interventions, respectively. Frequency of reporting of analgesia during (117/610, 19.1%) and after painful procedures (38/364, 10.4%) was low. Euthanasia practice was reported as anesthesia (348/501, 69%), transcardial perfusion (37/501, 8%), carbon dioxide (26/501, 6%), decapitation (22/501, 5%), exsanguination (23/501, 5%), other (25/501, 5%) and not specified (20/501, 4%, respectively. CONCLUSIONS The present systematic review revealed insufficient reporting of anesthesia and euthanasia methods throughout experimental studies in small laboratory mammals. Specific guidelines for anesthesia and euthanasia regimens should be considered to achieve comparability, quality of animal experiments and animal welfare. These measures are of special interest when translating experimental findings to future clinical applications.
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Affiliation(s)
- Christopher Uhlig
- Pulmonary Engineering Group, Department of Anesthesiology and Intensive Care Therapy, University Hospital Dresden, Dresden, Technische Universität Dresden, Germany
| | - Hannes Krause
- Pulmonary Engineering Group, Department of Anesthesiology and Intensive Care Therapy, University Hospital Dresden, Dresden, Technische Universität Dresden, Germany
| | - Thea Koch
- Pulmonary Engineering Group, Department of Anesthesiology and Intensive Care Therapy, University Hospital Dresden, Dresden, Technische Universität Dresden, Germany
| | - Marcelo Gama de Abreu
- Pulmonary Engineering Group, Department of Anesthesiology and Intensive Care Therapy, University Hospital Dresden, Dresden, Technische Universität Dresden, Germany
| | - Peter Markus Spieth
- Pulmonary Engineering Group, Department of Anesthesiology and Intensive Care Therapy, University Hospital Dresden, Dresden, Technische Universität Dresden, Germany
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Docking applied to the prediction of the affinity of compounds to P-glycoprotein. BIOMED RESEARCH INTERNATIONAL 2014; 2014:358425. [PMID: 24982867 PMCID: PMC4058261 DOI: 10.1155/2014/358425] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 05/02/2014] [Indexed: 01/16/2023]
Abstract
P-glycoprotein (P-gp) is involved in the transport of xenobiotic compounds and responsible for the decrease of the drug accumulation in multi-drug-resistant cells. In this investigation we compare several docking algorithms in order to find the conditions that are able to discriminate between P-gp binders and nonbinders. We built a comprehensive dataset of binders and nonbinders based on a careful analysis of the experimental data available in the literature, trying to overcome the discrepancy noticeable in the experimental results. We found that Autodock Vina flexible docking is the best choice for the tested options. The results will be useful to filter virtual screening results in the rational design of new drugs that are not expected to be expelled by P-gp.
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Wen PC, Verhalen B, Wilkens S, Mchaourab HS, Tajkhorshid E. On the origin of large flexibility of P-glycoprotein in the inward-facing state. J Biol Chem 2013; 288:19211-20. [PMID: 23658020 PMCID: PMC3696692 DOI: 10.1074/jbc.m113.450114] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
P-glycoprotein (Pgp) is one of the most biomedically relevant transporters in the ATP binding
cassette (ABC) superfamily due to its involvement in developing multidrug resistance in cancer
cells. Employing molecular dynamics simulations and double electron-electron resonance spectroscopy,
we have investigated the structural dynamics of membrane-bound Pgp in the inward-facing state and
found that Pgp adopts an unexpectedly wide range of conformations, highlighted by the degree of
separation between the two nucleotide-binding domains (NBDs). The distance between the two NBDs in
the equilibrium simulations covers a range of at least 20 Å, including, both, more open and
more closed NBD configurations than the crystal structure. The double electron-electron resonance
measurements on spin-labeled Pgp mutants also show wide distributions covering both longer and
shorter distances than those observed in the crystal structure. Based on structural and sequence
analyses, we propose that the transmembrane domains of Pgp might be more flexible than other
structurally known ABC exporters. The structural flexibility of Pgp demonstrated here is not only in
close agreement with, but also helps rationalize, the reported high NBD fluctuations in several ABC
exporters and possibly represents a fundamental difference in the transport mechanism between ABC
exporters and ABC importers. In addition, during the simulations we have captured partial entrance
of a lipid molecule from the bilayer into the lumen of Pgp, reaching the putative drug binding site.
The location of the protruding lipid suggests a putative pathway for direct drug recruitment from
the membrane.
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Affiliation(s)
- Po-Chao Wen
- Center for Biophysics and Computational Biology, Department of Biochemistry, College of Medicine, and The Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illnois 61801, USA
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