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Vamos M, Zsigmond EJ, Hohnloser SH. Indications for mexiletine in the new ESC guidelines and beyond. Expert Opin Pharmacother 2023; 24:1403-1407. [PMID: 37306465 DOI: 10.1080/14656566.2023.2223964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 06/05/2023] [Indexed: 06/13/2023]
Abstract
INTRODUCTION Mexiletine is a class IB sodium-channel blocker. Unlike class IA or IC antiarrhythmic drugs, mexiletine rather shortens than prolongs action potential duration; therefore, it is less associated with proarrhythmic effects. AREAS COVERED Recently, new European Guidelines for the management of patients with ventricular arrhythmias and the prevention of sudden cardiac death were published, including a reappraisal of some established older antiarrhythmic drugs. EXPERT OPINION Mexiletine offers a first-line, genotype-specific treatment strategy for LQT3 patients as emphasized by the most recent guidelines. Besides this recommendation, current study reports suggest that in therapy-refractory ventricular tachyarrhythmias and electrical storms adjunctive mexiletine treatment may offer the possibility of stabilizing patients with or without concomitant interventional therapy such as catheter ablation.
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Affiliation(s)
- Mate Vamos
- Cardiac Electrophysiology Division, Department of Internal Medicine, University of Szeged, Szeged, Hungary
| | - Elod-Janos Zsigmond
- Doctoral School of Clinical Medicine, University of Szeged, Szeged, Hungary
- Department of Cardiology, Medical Centre, Hungarian Defence Forces, Budapest, Hungary
| | - Stefan H Hohnloser
- Department of Cardiology, J. W. Goethe University, Frankfurt Am Main, Germany
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2
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Zhorov BS. Molecular Modeling of Cardiac Sodium Channel with Mexiletine. MEMBRANES 2022; 12:1252. [PMID: 36557159 PMCID: PMC9786191 DOI: 10.3390/membranes12121252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/04/2022] [Accepted: 12/06/2022] [Indexed: 05/15/2023]
Abstract
A sodium channel blocker mexiletine (MEX) is used to treat chronic pain, myotonia and some arrhythmias. Mutations in the pore domain (PD) of voltage-gated sodium channels differently affect tonic block (TB) and use-dependent block (UDB) by MEX. Previous studies identified several MEX-sensing residues in the hNav1.5 channel and demonstrated that the channel block by MEX increases with activation of the voltage-sensing domain III (VSDIII), whereas MEX stabilizes the activated state of VSDIII. Structural rationales for these observations are unclear. Here, Monte Carlo (MC) energy minimizations were used to dock MEX and its more potent analog, Thio-Me2, into the hNav1.5 cryo-EM structure with activated VSDs and presumably inactivated PD. Computations yielded two ensembles of ligand binding poses in close contacts with known MEX-sensing residues in helices S6III, S6IV and P1IV. In both ensembles, the ligand NH3 group approached the cation-attractive site between backbone carbonyls at the outer-pore bottom, while the aromatic ring protruded ether into the inner pore (putative UDB pose) or into the III/IV fenestration (putative TB pose). In silico deactivation of VSDIII shifted helices S4-S5III, S5III, S6III and S6IV and tightened the TB site. In a model with activated VSDIII and three resting VSDs, MC-minimized energy profile of MEX pulled from the TB site towards lipids shows a deep local minimum due to interactions with 11 residues in S5III, P1III, S6III and S6IV. The minimum may correspond to an interim binding site for MEX in the hydrophobic path to the TB site along the lipid-exposed sides of repeats III and IV where 15 polar and aromatic residues would attract cationic blockers. The study explains numerous experimental data and suggests the mechanism of allosteric modification of the MEX binding site by VSDIII.
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Affiliation(s)
- Boris S. Zhorov
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8S 4K1, Canada;
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, 194223 St. Petersburg, Russia
- Almazov National Medical Research Centre, 197341 St. Petersburg, Russia
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Resolution of Racemic Aryloxy-Propan-2-yl Acetates via Lipase-Catalyzed Hydrolysis: Preparation of Enantiomerically Pure/Enantioenriched Mexiletine Intermediates and Analogs. Catalysts 2022. [DOI: 10.3390/catal12121566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The lipase kinetic resolution (KR) of aryloxy-propan-2-yl acetates, via hydrolysis, produced enantiomerically pure/enantioenriched mexiletine intermediates and analogs. Racemic acetates rac-1-(2,6-dimethylphenoxy)propan-2-yl acetate (rac-5a), rac-1-(2,4-dimethylphenoxy)propan-2-yl acetate (rac-5b), rac-1-(o-tolyloxy)propan-2-yl acetate (rac-5c) and rac-1-(naphthalen-1-yloxy)propan-2-yl acetate (rac-5d) were used as substrates. A preliminary screening (24 h, phosphate buffer pH 7.0 with 20% acetonitrile as co-solvent, 30 °C and enzyme:substrate ratio of 2:1, m:m) was carried out with twelve lipases using acetate 5a as substrate. Two enzymes stood out in the KR of 5a, the Amano AK lipase from Pseudomonas fluorescens and lipase from Thermomyces lanuginosus (TLL) immobilized on Immobead 150. Under these conditions, both the (R)-1-(2,6-dimethylphenoxy)propan-2-ol [(R)-4a] and the remaining (S)-1-(2,6-dimethylphenoxy)propan-2-yl acetate [(S)-5a] were obtained with enantiomeric excess (ee) > 99%, 50% conversion and enantiomeric ratio (E) > 200. The KR study was expanded to racemic acetates 5b-d, leading to the corresponding chiral remaining acetates with ≥95% ee, and the alcohols 4b-d with ≥98% ee, and conversion values close to 50%. The best conditions for KRs of rac-5b-d involved the use of lipase from P. fluorescens or TLL immobilized on Immobead 150, 24 or 48 h and 30 °C. These intermediates had their absolute configurations determined using 1H NMR spectroscopy (Mosher’s method), showing that the KRs of these acetates obeyed the Kazlauskas’ rule. Molecular docking studies corroborated the experimental results, indicating a preference for the hydrolysis of (R)-5a-d.
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Abstract
Background:
Mexiletine belongs to the β-amino-aryl-ether group of pharmaceutical and applied in the diagnosis of antiarrhythmics, allodynia, and myotonic disorders. In its chemical structure, it possesses a chiral center and practiced in the form of the racemic mixture. The production and accessibility of mexiletine have accompanied with a meaningful development in awareness of its pharmacologic actions. But in clinical arrhythmias and binding experiments on cardiac sodium channels, the (R)-enantiomer of mexiletine is more potent than the (S)-enantiomer. Also, (S)-enantiomer is further active in the diagnosis of allodynia than the (R)-enantiomer.
Methods:
During the last two decades, chromatographic techniques such as HPLC, and GC coupled with mass spectrometry or field ionization detector was used for the stereoselective analysis of MEX enantiomers.
Results:
The direct enantioresolution deal with the use of chiral stationary phases (CSPs) with or no pre-derivatization which depend on a chromophoric entity in the racemates whereas indirect HPLC process involved the use of chiral derivatization reagents (CDR) for the synthesis of diastereomeric derivatives of racemates. Different techniques have their strengths and weaknesses.
Conclusion:
Regulation of enantiomeric purity and estimation of particular enantiomers of drug molecules stays an essential topic for therapeutic, diagnostic, and regulatory uses and to promote a precise assessment of the hazards to human health by false enantiomers. This review aims to offer a systematic survey of the analytical methods (chromatography based) used in the enantioselective analysis of MEX developed in the last two decades (the year 2000 onwards).
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Milani G, Cavalluzzi MM, Altamura C, Santoro A, Perrone M, Muraglia M, Colabufo NA, Corbo F, Casalino E, Franchini C, Pisano I, Desaphy J, Carrieri A, Carocci A, Lentini G. Bioisosteric Modification of To042: Synthesis and Evaluation of Promising Use-Dependent Inhibitors of Voltage-Gated Sodium Channels. ChemMedChem 2021; 16:3588-3599. [PMID: 34519427 PMCID: PMC9293070 DOI: 10.1002/cmdc.202100496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 09/01/2021] [Indexed: 11/07/2022]
Abstract
Three analogues of To042, a tocainide-related lead compound recently reported for the treatment of myotonia, were synthesized and evaluated in vitro as skeletal muscle sodium channel blockers possibly endowed with enhanced use-dependent behavior. Patch-clamp experiments on hNav1.4 expressed in HEK293 cells showed that N-[(naphthalen-1-yl)methyl]-4-[(2,6-dimethyl)phenoxy]butan-2-amine, the aryloxyalkyl bioisostere of To042, exerted a higher use-dependent block than To042 thus being able to preferentially block the channels in over-excited membranes while preserving healthy tissue function. It also showed the lowest active transport across BBB according to the results of P-glycoprotein (P-gp) interacting activity evaluation and the highest cytoprotective effect on HeLa cells. Quantum mechanical calculations and dockings gave insights on the most probable conformation of the aryloxyalkyl bioisostere of To042 in solution and the target residues involved in the binding, respectively. Both approaches indicated the conformations that might be adopted in both the unbound and bound state of the ligand. Overall, N-[(naphthalen-1-yl)methyl]-4-[(2,6-dimethyl)phenoxy]butan-2-amine exhibits an interesting toxico-pharmacological profile and deserves further investigation.
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Affiliation(s)
- Gualtiero Milani
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Maria Maddalena Cavalluzzi
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Concetta Altamura
- Department of Biomedical Sciences and Human OncologySchool of MedicineUniversity of Bari Aldo Moro PoliclinicoPiazza Giulio Cesare70124BariItaly
| | - Antonella Santoro
- Department of Bioscience, Biotechnology and BiopharmaceuticsUniversity of Bari Aldo MoroVia Orabona 470125BariItaly
| | - Mariagrazia Perrone
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Marilena Muraglia
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Nicola Antonio Colabufo
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Filomena Corbo
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Elisabetta Casalino
- Department of Veterinary MedicineUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Carlo Franchini
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Isabella Pisano
- Department of Bioscience, Biotechnology and BiopharmaceuticsUniversity of Bari Aldo MoroVia Orabona 470125BariItaly
| | - Jean‐François Desaphy
- Department of Biomedical Sciences and Human OncologySchool of MedicineUniversity of Bari Aldo Moro PoliclinicoPiazza Giulio Cesare70124BariItaly
| | - Antonio Carrieri
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Alessia Carocci
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
| | - Giovanni Lentini
- Department of Pharmacy – Pharmaceutical SciencesUniversity of Bari Aldo MoroVia E. Orabona 470125BariItaly
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Catalano A, Franchini C, Carocci A. Voltage-Gated Sodium Channel Blockers: Synthesis of Mexiletine Analogues and Homologues. Curr Med Chem 2021; 28:1535-1548. [PMID: 32364065 DOI: 10.2174/0929867327666200504080530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/13/2020] [Accepted: 03/14/2020] [Indexed: 11/22/2022]
Abstract
Mexiletine is an antiarrhythmic drug belonging to IB class, acting as sodium channel blocker. Besides its well-known activity on arrhythmias, its usefulness in the treatment of myotonia, myotonic dystrophy and amyotrophic lateral sclerosis is now widely recognized. Nevertheless, it has been retired from the market in several countries because of its undesired effects. Thus, several papers were reported in the last years about analogues and homologues of mexiletine being endowed with a wider therapeutic ratio and a more selectivity of action. Some of them showed sodium channel blocking activity higher than the parent compound. It is noteworthy that mexiletine is used in therapy as a racemate even though a difference in the activities of the two enantiomers was widely demonstrated, with (-)-(R)-enantiomer being more active: this finding led several research groups to study mexiletine and its analogues and homologues in their optically active forms. This review summarizes the different synthetic routes used to obtain these compounds. They could represent an interesting starting point to new mexiletine-like compounds without common side effects related to the use of mexiletine.
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Affiliation(s)
- Alessia Catalano
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", via Orabona 4, 70126 Bari, Italy
| | - Carlo Franchini
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", via Orabona 4, 70126 Bari, Italy
| | - Alessia Carocci
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", via Orabona 4, 70126 Bari, Italy
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Carocci A, Roselli M, Budriesi R, Micucci M, Desaphy JF, Altamura C, Cavalluzzi MM, Toma M, Passeri GI, Milani G, Lovece A, Catalano A, Bruno C, De Palma A, Corbo F, Franchini C, Habtemariam S, Lentini G. Synthesis and Evaluation of Voltage-Gated Sodium Channel Blocking Pyrroline Derivatives Endowed with Both Antiarrhythmic and Antioxidant Activities. ChemMedChem 2020; 16:578-588. [PMID: 33015979 DOI: 10.1002/cmdc.202000692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Indexed: 01/17/2023]
Abstract
Under the hypothesis that cardioprotective agents might benefit from synergism between antiarrhythmic activity and antioxidant properties, a small series of mexiletine analogues were coupled with the 2,2,5,5-tetramethylpyrroline moiety, known for its antioxidant effect, in order to obtain dual-acting drugs potentially useful in the protection of the heart against post-ischemic reperfusion injury. The pyrroline derivatives reported herein were found to be more potent as antiarrhythmic agents than mexiletine and displayed antioxidant activity. The most interesting tetramethylpyrroline congener, a tert-butyl-substituted analogue, was at least 100 times more active as an antiarrhythmic than mexiletine.
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Affiliation(s)
- Alessia Carocci
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Mariagrazia Roselli
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Roberta Budriesi
- Department of Pharmacy and Biotechnologies, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, Bologna, 40126, Italy
| | - Matteo Micucci
- Department of Pharmacy and Biotechnologies, Alma Mater Studiorum-University of Bologna, Via Belmeloro 6, Bologna, 40126, Italy
| | - Jean-François Desaphy
- Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, piazza Giulio Cesare, 70126, Bari, Italy
| | - Concetta Altamura
- Department of Biomedical Sciences and Human Oncology, University of Bari Aldo Moro, piazza Giulio Cesare, 70126, Bari, Italy
| | - Maria Maddalena Cavalluzzi
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Maddalena Toma
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Giovanna Ilaria Passeri
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Gualtiero Milani
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Angelo Lovece
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Alessia Catalano
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Claudio Bruno
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Annalisa De Palma
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari Aldo Moro, via E. Orabona 4, 70126, Bari, Italy
| | - Filomena Corbo
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Carlo Franchini
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
| | - Solomon Habtemariam
- Pharmacognosy Research Laboratories & Herbal Analysis services UK, University of Greenwich, Chatham-Maritime, Kent, ME4 4TB, UK
| | - Giovanni Lentini
- Department of Pharmacy - Pharmaceutical Sciences, University of Bari Aldo Moro, via E. Orabona n. 4, 70126, Bari, Italy
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8
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Almeida ML, Oliveira MC, Pitta IR, Pitta MG. Advances in Synthesis and Medicinal Applications of Compounds Derived from Phthalimide. Curr Org Synth 2020; 17:252-270. [DOI: 10.2174/1570179417666200325124712] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 12/20/2022]
Abstract
Phthalimide derivatives have been presenting several promising biological activities in the literature,
such as anti-inflammatory, analgesic, antitumor, antimicrobial and anticonvulsant. The most well-known and
studied phthalimide derivative (isoindoline-1,3-dione) is thalidomide: this compound initially presented
important sedative effects, but it is now known that thalidomide has effectiveness against a wide variety of
diseases, including inflammation and cancer. This review approaches some of the recent and efficient chemical
synthesis pathways to obtain phthalimide analogues and also presents a summary of the main biological
activities of these derivatives found in the literature. Therefore, this review describes the chemical and
therapeutic aspects of phthalimide derivatives.
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Affiliation(s)
- Marcel L. Almeida
- Nucleus of Research in Therapeutical Innovation Suely Galdino (NUPIT SG), Bioscience Center, Federal University of Pernambuco, Recife, Brazil
| | - Maria C.V.A. Oliveira
- Nucleus of Research in Therapeutical Innovation Suely Galdino (NUPIT SG), Bioscience Center, Federal University of Pernambuco, Recife, Brazil
| | - Ivan R. Pitta
- Nucleus of Research in Therapeutical Innovation Suely Galdino (NUPIT SG), Bioscience Center, Federal University of Pernambuco, Recife, Brazil
| | - Marina G.R. Pitta
- Nucleus of Research in Therapeutical Innovation Suely Galdino (NUPIT SG), Bioscience Center, Federal University of Pernambuco, Recife, Brazil
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Bredikhin AA, Bredikhina ZA. Stereoselective Crystallization as a Basis for Single-Enantiomer Drug Production. Chem Eng Technol 2017. [DOI: 10.1002/ceat.201600649] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Alexander A. Bredikhin
- Russian Academy of Sciences; Kazan Scientific Center; A.E. Arbuzov Institute of Organic and Physical Chemistry; Arbuzov st., 8 420088 Kazan Russia
| | - Zemfira A. Bredikhina
- Russian Academy of Sciences; Kazan Scientific Center; A.E. Arbuzov Institute of Organic and Physical Chemistry; Arbuzov st., 8 420088 Kazan Russia
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10
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Iacopetta D, Carocci A, Sinicropi MS, Catalano A, Lentini G, Ceramella J, Curcio R, Caroleo MC. Old Drug Scaffold, New Activity: Thalidomide-Correlated Compounds Exert Different Effects on Breast Cancer Cell Growth and Progression. ChemMedChem 2017; 12:381-389. [PMID: 28099781 DOI: 10.1002/cmdc.201600629] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/16/2017] [Indexed: 12/17/2022]
Abstract
Thalidomide was first used for relief of morning sickness in pregnant women and then withdrawn from the market because of its dramatic effects on normal fetal development. Over the last decades, it has been used successfully for the treatment of several pathologies, including cancer. Many analogues with improved activity have been synthesized and tested. Herein we report some effects on the growth and progression of MCF-7 and MDA-MB-231 breast cancer cells by a small series of thalidomide-correlated compounds, which are very effective at inducing cancer cell death by triggering TNFα-mediated apoptosis. The most active compounds are able to drastically reduce the migration of breast cancer cells by regulation of the two major proteins involved in epithelial-mesenchymal transition (EMT): vimentin and E-cadherin. Moreover, these compounds diminish the intracellular biosynthesis of vascular endothelial growth factor (VEGF), which is primarily involved in the promotion of angiogenesis, sustaining tumor progression. The multiple features of these compounds that act on various key points of the tumorigenesis process make them good candidates for preclinical studies.
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Affiliation(s)
- Domenico Iacopetta
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Arcavacata di Rende, Italy
| | - Alessia Carocci
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", 70126, Bari, Italy
| | - Maria Stefania Sinicropi
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Arcavacata di Rende, Italy
| | - Alessia Catalano
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", 70126, Bari, Italy
| | - Giovanni Lentini
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", 70126, Bari, Italy
| | - Jessica Ceramella
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Arcavacata di Rende, Italy
| | - Rosita Curcio
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Arcavacata di Rende, Italy
| | - Maria Cristina Caroleo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036, Arcavacata di Rende, Italy
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Catalano A, Luciani R, Carocci A, Cortesi D, Pozzi C, Borsari C, Ferrari S, Mangani S. X-ray crystal structures of Enterococcus faecalis thymidylate synthase with folate binding site inhibitors. Eur J Med Chem 2016; 123:649-664. [PMID: 27517810 DOI: 10.1016/j.ejmech.2016.07.066] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 07/25/2016] [Accepted: 07/26/2016] [Indexed: 11/26/2022]
Abstract
Infections caused by Enterococcus faecalis (Ef) represent nowadays a relevant health problem. We selected Thymidylate synthase (TS) from this organism as a potential specific target for antibacterial therapy. We have previously demonstrated that species-specific inhibition of the protein can be achieved despite the relatively high structural similarity among bacterial TSs and human TS. We had previously obtained the EfTS crystal structure of the protein in complex with the metabolite 5-formyl-tetrahydrofolate (5-FTHF) suggesting the protein role as metabolite reservoir; however, protein-inhibitors complexes were still missing. In the present work we identified some inhibitors bearing the phthalimidic core from our in-house library and we performed crystallographic screening towards EfTS. We obtained two X-ray crystallographic structures: the first with a weak phthalimidic inhibitor bound in one subunit and 5-hydroxymethylene-6-hydrofolic acid (5-HMHF) in the other subunit; a second X-ray structure complex with methotrexate. The structural information achieved confirm the role of EfTS as an enzyme involved in the folate pool system and provide a structural basis for structure-based drug design.
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Affiliation(s)
- Alessia Catalano
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "Aldo Moro", Via Orabona 4, 70125 Bari, Italy
| | - Rosaria Luciani
- Dipartimento di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Alessia Carocci
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "Aldo Moro", Via Orabona 4, 70125 Bari, Italy
| | - Debora Cortesi
- Dipartimento di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Cecilia Pozzi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy
| | - Chiara Borsari
- Dipartimento di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Stefania Ferrari
- Dipartimento di Scienze della Vita, Università degli Studi di Modena e Reggio Emilia, Via Campi 103, 41125 Modena, Italy.
| | - Stefano Mangani
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università degli Studi di Siena, Via Aldo Moro 2, 53100 Siena, Italy.
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Synthesis, antiarrhythmic activity, and toxicological evaluation of mexiletine analogues. Eur J Med Chem 2016; 121:300-307. [PMID: 27267000 DOI: 10.1016/j.ejmech.2016.05.046] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/20/2016] [Accepted: 05/21/2016] [Indexed: 11/24/2022]
Abstract
Four mexiletine analogues have been tested for their antiarrhythmic, inotropic, and chronotropic effects on isolated guinea pig heart tissues and to assess calcium antagonist activity, in comparison with the parent compound mexiletine. All analogues showed from moderate to high antiarrhythmic activity. In particular, three of them (1b,c,e) were more active and potent than the reference drug, while exhibiting only modest or no negative inotropic and chronotropic effects and vasorelaxant activity, thus showing high selectivity of action. All compounds showed no cytotoxicity and 1b,c,d did not impair motor coordination. All in, these new analogues exhibit an interesting cardiovascular profile and deserve further investigation.
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Antiproliferative Activity Evaluation of a Series ofN-1,3-Benzothiazol-2-ylbenzamides as Novel Apoptosis Inducers. J CHEM-NY 2016. [DOI: 10.1155/2016/4267564] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
A series ofN-1,3-benzothiazol-2-ylbenzamide derivatives were studied for their antiproliferative activity on human liver hepatocellular carcinoma (HepG2) and human breast cancer (MCF-7) cell lines. Most of them were found to show a prominent inhibitory effect on cell growth. Among the most active compounds,1kemerged for its proapoptotic effect that is particularly evident towards MCF-7 cancer cell lines.
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Grande F, Parisi OI, Mordocco RA, Rocca C, Puoci F, Scrivano L, Quintieri AM, Cantafio P, Ferla S, Brancale A, Saturnino C, Cerra MC, Sinicropi MS, Angelone T. Quercetin derivatives as novel antihypertensive agents: Synthesis and physiological characterization. Eur J Pharm Sci 2015; 82:161-70. [PMID: 26631584 DOI: 10.1016/j.ejps.2015.11.021] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/06/2015] [Accepted: 11/25/2015] [Indexed: 01/27/2023]
Abstract
The antihypertensive flavonol quercetin (Q1) is endowed with a cardioprotective effect against myocardial ischemic damage. Q1 inhibits angiotensin converting enzyme activity, improves vascular relaxation, and decreases oxidative stress and gene expression. However, the clinical application of this flavonol is limited by its poor bioavailability and low stability in aqueous medium. In the aim to overcome these drawbacks and preserve the cardioprotective effects of quercetin, the present study reports on the preparation of five different Q1 analogs, in which all OH groups were replaced by hydrophobic functional moieties. Q1 derivatives have been synthesized by optimizing previously reported procedures and analyzed by spectroscopic analysis. The cardiovascular properties of the obtained compounds were also investigated in order to evaluate whether chemical modification affects their biological efficacy. The interaction with β-adrenergic receptors was evaluated by molecular docking and the cardiovascular efficacy was investigated on the ex vivo Langendorff perfused rat heart. Furthermore, the bioavailability and the antihypertensive properties of the most active derivative were evaluated by in vitro studies and in vivo administration (1month) on spontaneously hypertensive rats (SHRs), respectively. Among all studied Q1 derivatives, only the ethyl derivative reduced left ventricular pressure (at 10(-8)M÷10(-6)M doses) and improved relaxation and coronary dilation. NOSs inhibition by L-NAME abolished inotropism, lusitropism and coronary effects. Chronic administration of high doses of this compound on SHR reduced systolic and diastolic pressure. Differently, the acetyl derivative induced negative inotropism and lusitropism (at 10(-10)M and 10(-8)÷10(-6)M doses), without affecting coronary pressure. Accordingly, docking studies suggested that these compounds bind both β1/β2-adrenergic receptors. Taking into consideration all the obtained results, the replacement of OH with ethyl groups seems to improve Q1 bioavailability and stability; therefore, the ethyl derivative could represent a good candidate for clinical use in hypertension.
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Affiliation(s)
- Fedora Grande
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Ortensia I Parisi
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, CS, Italy; Department of Informatics, Modeling, Electronics and Systems Engineering, University of Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Roberta A Mordocco
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Carmine Rocca
- Department of Biology, Ecology and E.S., University of Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Francesco Puoci
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, CS, Italy.
| | - Luca Scrivano
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Anna M Quintieri
- Department of Biology, Ecology and E.S., University of Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Patrizia Cantafio
- Department of Biology, Ecology and E.S., University of Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Salvatore Ferla
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, UK
| | - Andrea Brancale
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Wales, UK
| | - Carmela Saturnino
- Department of Pharmaceutical and Biomedical Sciences, University of Salerno, 84084 Fisciano, SA, Italy
| | - Maria C Cerra
- Department of Biology, Ecology and E.S., University of Calabria, 87036 Arcavacata di Rende, CS, Italy.
| | - Maria S Sinicropi
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Arcavacata di Rende, CS, Italy
| | - Tommaso Angelone
- Department of Biology, Ecology and E.S., University of Calabria, 87036 Arcavacata di Rende, CS, Italy
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Bredikhina ZA, Kurenkov AV, Krivolapov DB, Bredikhin AA. Stereoselective crystallization of 3-(2,6-dimethylphenoxy)propane-1,2-diol: preparation of the single-enantiomer drug mexiletine. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Defrenza I, Catalano A, Carocci A, Carrieri A, Muraglia M, Rosato A, Corbo F, Franchini C. 1,3-Benzothiazoles as Antimicrobial Agents. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.2222] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ivana Defrenza
- Dipartimento di Farmacia-Scienze del Farmaco; Università degli Studi di Bari ‘Aldo Moro’; via E. Orabona n. 4 70125 Bari Italy
| | - Alessia Catalano
- Dipartimento di Farmacia-Scienze del Farmaco; Università degli Studi di Bari ‘Aldo Moro’; via E. Orabona n. 4 70125 Bari Italy
| | - Alessia Carocci
- Dipartimento di Farmacia-Scienze del Farmaco; Università degli Studi di Bari ‘Aldo Moro’; via E. Orabona n. 4 70125 Bari Italy
| | - Antonio Carrieri
- Dipartimento di Farmacia-Scienze del Farmaco; Università degli Studi di Bari ‘Aldo Moro’; via E. Orabona n. 4 70125 Bari Italy
| | - Marilena Muraglia
- Dipartimento di Farmacia-Scienze del Farmaco; Università degli Studi di Bari ‘Aldo Moro’; via E. Orabona n. 4 70125 Bari Italy
| | - Antonio Rosato
- Dipartimento di Farmacia-Scienze del Farmaco; Università degli Studi di Bari ‘Aldo Moro’; via E. Orabona n. 4 70125 Bari Italy
| | - Filomena Corbo
- Dipartimento di Farmacia-Scienze del Farmaco; Università degli Studi di Bari ‘Aldo Moro’; via E. Orabona n. 4 70125 Bari Italy
| | - Carlo Franchini
- Dipartimento di Farmacia-Scienze del Farmaco; Università degli Studi di Bari ‘Aldo Moro’; via E. Orabona n. 4 70125 Bari Italy
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Muraglia M, De Bellis M, Catalano A, Carocci A, Franchini C, Carrieri A, Fortugno C, Bertucci C, Desaphy JF, De Luca A, Conte Camerino D, Corbo F. N-aryl-2,6-dimethylbenzamides, a new generation of tocainide analogues as blockers of skeletal muscle voltage-gated sodium channels. J Med Chem 2014; 57:2589-600. [PMID: 24568674 DOI: 10.1021/jm401864b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
On the basis of a 3D-QSAR study, a new generation of tocainide analogues were designed and synthesized as voltage-gated skeletal muscle sodium channel blockers. Data obtained by screening new compounds by means of Hille-Campbell Vaseline gap voltage-clamp recordings showed that the elongation of the alkyl chain and the introduction of lipophilic and sterically hindered groups on the amino function enhance both potency and use-dependent block. The results provide additional indications about the structural requirement of pharmacophores for further increasing potency and state-dependent block and allowed us to identify a new tocainide analogue (6f) with a favorable pharmacodynamic profile to be proposed as a valid candidate for studies aimed at evaluating its usefulness in the treatment of myotonias.
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Affiliation(s)
- Marilena Muraglia
- Dipartimento di Farmacia-Scienze del Farmaco, ‡Sezione di Farmacologia, Università degli Studi di Bari "Aldo Moro" , via E. Orabona n. 4, 70126 Bari, Italy
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