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Poslu AH, Aslan ŞE, Koz G, Senturk E, Koz Ö, Senturk M, Nalbantsoy A, Öztekin A, Ekinci D. Synthesis and biological evaluation of novel salicylidene uracils: Cytotoxic activity on human cancer cell lines and inhibitory action on enzymatic activity. Arch Pharm (Weinheim) 2024; 357:e2300374. [PMID: 37902389 DOI: 10.1002/ardp.202300374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/12/2023] [Accepted: 10/14/2023] [Indexed: 10/31/2023]
Abstract
A series of salicylidene uracil (1-18) derived from 5-aminouracil and substituted salicylaldehydes were analyzed for cytotoxic activity and enzyme inhibitory potency. Nine out of eighteen derivatives (6-8, 10, 12-15, 18) are novel molecules synthesized for the first time in this work, and other derivatives were previously synthesized by our group. The compounds were characterized by Proton nuclear magnetic resonance, carbon nuclear magnetic resonance, fourier transform infrared spectroscopy, and elemental analysis. All compounds were tested for their in vitro cytotoxicity against PC-3 (human prostate adenocarcinoma), A549 (human alveolar adenocarcinoma), and SHSY-5Y (human neuroblastoma) cancer cell lines and the nontumorigenic HEK293 (human embryonic kidney cells) cell line. The 3,5-di-tert-butylsalicylaldehyde derived compound (8) was toxic to PC-3 human prostate adenocarcinoma cells, showing a promising IC50 value at 7.05 ± 0.76 μM. The present study also aimed to evaluate the inhibitory effects of the compounds against several key enzymes, namely carbonic anhydrase I and II (CA I and CA II), acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and glutathione reductase (GR), which are implicated in various global disorders, such as Alzheimer's disease, epilepsy, cancer, malaria, diabetes, and glaucoma. The inhibitory profiles of the tested compounds were assessed by determining their Ki values, which ranged from 2.96 to 9.24 nM for AChE, 3.78 to 12.57 nM for BChE, 8.42 to 25.74 nM for CA I, 7.24 to 19.74 nM for CA II, and 0.541 to 1.124 μM for GR. Molecular docking studies were also performed for all compounds. Most derivatives exhibited much more effective inhibitory action compared with clinically used standards. Thus, our findings indicate that the salicylidene derivatives presented in this study are promising drug candidates that need further evaluation.
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Affiliation(s)
- Ayşe Halıç Poslu
- Department of Chemistry, Faculty of Engineering and Natural Sciences, Bursa Technical University, Bursa, Turkey
| | - Şafak Esra Aslan
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayıs University, Samsun, Turkey
- Technology Transfer Office, Giresun University, Giresun, Turkey
| | - Gamze Koz
- Department of Chemistry, Faculty of Engineering and Natural Sciences, Bursa Technical University, Bursa, Turkey
| | - Esra Senturk
- Department of Physiology, Faculty of Medicine, Agri Ibrahim Cecen University, Agri, Turkey
| | - Ömer Koz
- Department of Chemistry, Faculty of Engineering and Natural Sciences, Bursa Technical University, Bursa, Turkey
| | - Murat Senturk
- Faculty of Pharmacy, Agri Ibrahim Cecen University, Agri, Turkey
| | - Ayşe Nalbantsoy
- Department of Bioengineering, Faculty of Engineering, Ege University, Izmir, Turkey
| | - Aykut Öztekin
- Health Services of Vocational School, Agri Ibrahim Cecen University, Agri, Turkey
| | - Deniz Ekinci
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayıs University, Samsun, Turkey
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2
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Orhan F, Senturk M, Genisel M. A new carbonic anhydrase identified in the Gram-negative bacterium (Chromohalobacter sp.) and the interaction of anions with the enzyme. Comp Biochem Physiol C Toxicol Pharmacol 2022; 254:109290. [PMID: 35114393 DOI: 10.1016/j.cbpc.2022.109290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 01/20/2022] [Accepted: 01/26/2022] [Indexed: 11/19/2022]
Abstract
In this study, the characterization and inhibition characteristic of α-class carbonic anhydrase from Chromohalobacter (ChCA) was documented for the first time. The carbonic anhydrase enzyme had 47.77% yield and 54.45-fold purity. The specific activity of the enzyme was determined as 318.52 U/mg proteins. Alternative substrate (4-nitrophenyl trifluoroacetate, 4-nitrophenyl phosphate, 4-nitrophenyl sulphate and 4-nitrophenyl acetate) were tested for the enzyme. KM and Vmax values for 4-nitrophenyl acetate were 4.57 mM and 4.29 EU/mL and for 4-nitrophenyl trifluoroacetate were 2.39 mM and 2.41 EU/mL. The anions, Cl-, NO2-, NO3-, Br-, ClO3-, ClO4-, I-, CO32- and SO42-, inhibited the ChCA hydratase activity. Among nine anions, the strongest inhibitor activities were obtained with micro molar concentrations of NO2-, NO3-, Br-, I-, CO32- (KI values of 160-255 μM). Other four anions tested (Cl-, ClO3-, ClO4- and SO42-) showed moderate inhibitory activities (KI values of 680-813.5 μM). The results obtained demonstrate that the anions we tested inhibit the Chromohalobacter CA (ChCA) enzyme as in other α-CAs in mammals; however, the susceptibility of ChCA resulted from anions differed significantly from that of other organism CAs.
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Affiliation(s)
- Furkan Orhan
- Agri Ibrahim Cecen University, Art and Science Faculty, Molecular Biology Department, 4100 Agri, Turkey; Agri Ibrahim Cecen University, Central Research and Application Laboratory, 4100 Agri, Turkey.
| | - Murat Senturk
- Agri Ibrahim Cecen University, Pharmacy Faculty, Department of Biochemistry, 4100 Agri, Turkey
| | - Mucip Genisel
- Agri Ibrahim Cecen University, Central Research and Application Laboratory, 4100 Agri, Turkey; Agri Ibrahim Cecen University, Pharmacy Faculty, Department of Pharmaceutical Botany, 04100 Agri, Turkey
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3
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De Simone G, Bua S, Supuran CT, Alterio V. Benzyl alcohol inhibits carbonic anhydrases by anchoring to the zinc coordinated water molecule. Biochem Biophys Res Commun 2021; 548:217-221. [PMID: 33647799 DOI: 10.1016/j.bbrc.2021.02.067] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 12/14/2022]
Abstract
Up to date alcohols have been scarcely investigated as carbonic anhydrase (CA) inhibitors. To get more insights into the CA inhibition properties of this class of molecules, in this paper, by means of inhibition assays and X-ray crystallographic studies we report a detailed characterization of the CA inhibition properties and the binding mode to human CA II of benzyl alcohol. Results show that, although possessing a very simple scaffold, this molecule acts as a micromolar CA II inhibitor, which anchors to the enzyme active site by means of an H-bond interaction with the zinc bound solvent molecule. Taken together our results clearly indicate primary alcohols as a class of CA inhibitors that deserve to be more investigated.
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Affiliation(s)
| | - Silvia Bua
- Neurofarba Department, Section of Pharmaceutical and Nutriceutical Sciences, Università degli Studi di Firenze, Sesto Fiorentino, Florence, Italy
| | - Claudiu T Supuran
- Neurofarba Department, Section of Pharmaceutical and Nutriceutical Sciences, Università degli Studi di Firenze, Sesto Fiorentino, Florence, Italy
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4
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Benzoxepinones: A new isoform-selective class of tumor associated carbonic anhydrase inhibitors. Bioorg Med Chem 2020; 28:115496. [PMID: 32327349 DOI: 10.1016/j.bmc.2020.115496] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/31/2020] [Accepted: 04/05/2020] [Indexed: 12/18/2022]
Abstract
Benzoxepinones ("homocoumarins") are identified as a new class of selective inhibitors for tumor associated human carbonic anhydrases (hCA, EC 4.2.1.1) isoforms IX and XII. Similar to coumarins, they do not inhibit or poorly inhibit cytosolic human (h) isoforms hCA I and II, but act as nanomolar inhibitors of the trans-membrane, tumor associated isoforms hCA IX and XII.
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5
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Angeli A, Carta F, Donnini S, Capperucci A, Ferraroni M, Tanini D, Supuran CT. Selenolesterase enzyme activity of carbonic anhydrases. Chem Commun (Camb) 2020; 56:4444-4447. [PMID: 32195510 DOI: 10.1039/d0cc00995d] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Carbonic anhydrases (CAs, E.C. 4.2.1.1) are metalloenzymes expressed on a variety of cell types. Their overexpression leads to serious pathologies, including cancer. The discovery of a series of selenolesters with high structural diversity as novel CA inhibitors is reported here. These compounds show remarkable in vitro inhibition against a panel of human CA isoforms such as hCA I, II, IX and XII. We observed that they undergo a CA mediated hydrolysis, releasing different active selenol fragments, which act as CA inhibitors. Notably, to the best of our knowledge, this is the first example of an enzyme with selenolesterase activity. In addition, X-ray crystallographic data support the proposed mechanism, proving selenolesters as novel pro-drug inhibitors with potential pharmacological applications.
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Affiliation(s)
- Andrea Angeli
- University of Florence, NEUROFARBA Department, Sezione di Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Florence), Italy.
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6
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Aydin T, Senturk M, Kazaz C, Cakir A. Inhibitory Effects and Kinetic-Docking Studies of Xanthohumol FromHumulus lupulusCones Against Carbonic Anhydrase, Acetylcholinesterase, and Butyrylcholinesterase. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19881503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Xanthohumol is an essential prenyl flavonoid of Humulus lupulus L. cones, and the taste of beer is due to this compound. Lately, xanthohumol has earned significant interest due to its potential anticancer, antigenotoxic, and adipogenesis effects. In this paper, the inhibitory effects of xanthohumol on human carbonic anhydrase isozymes (hCAI and hCAII), acetylcholinesterase (AChE), and butyrylcholinesterase (BChE) were studied. Also, molecular docking studies were used to investigate ligand interaction diagrams of xanthohumol at the binding cavities of hCAI and II. Xanthohumol was isolated from hop cones by silica gel column chromatography. Carbonic anhydrase enzyme activities were determined spectrophotometrically. In addition, molecular modeling approaches were used for the hCAI and hCAII isoenzymes. Ellman’s method was used for the inhibitor activities of AChE and BChE. The KIvalues of xanthohumol were detected as 0.085 µM for hCAI, 0.049 µM for hCAII, 95.5 nM for AChE, and 124.9 nM for BChE. In conclusion, xanthohumol can pleiotropically exert health promoting effects. It has antiglaucoma, anticonvulsant, antiepileptic, and anticancer activities due to its potent inhibitory effects on hCAI and hCAII. These findings may open new avenues for the design and development of novel hCAI, hCAII, AChE, and BChE inhibitors compared with sulfonamide/sulfamate.
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Affiliation(s)
- Tuba Aydin
- Department of Pharmacognosy, Faculty of Pharmacy, Agri Ibrahim Cecen University, Turkey
| | - Murat Senturk
- Department of Biochemistry, Faculty of Pharmacy, Agri Ibrahim Cecen University, Turkey
| | - Cavit Kazaz
- Department of Chemistry, Faculty of Science, Ataturk University, Erzurum, Turkey
| | - Ahmet Cakir
- Department of Chemistry, Faculty of Science & Letter, Kilis 7 Aralik University, Turkey
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7
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Nocentini A, Supuran CT. Advances in the structural annotation of human carbonic anhydrases and impact on future drug discovery. Expert Opin Drug Discov 2019; 14:1175-1197. [DOI: 10.1080/17460441.2019.1651289] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Alessio Nocentini
- Department of Neuroscience, Psychology, Drug Research and Child’s Health (NEUROFARBA), Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Florence, Italy
| | - Claudiu T. Supuran
- Department of Neuroscience, Psychology, Drug Research and Child’s Health (NEUROFARBA), Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Florence, Italy
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8
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Ramya PVS, Angapelly S, Angeli A, Digwal CS, Arifuddin M, Babu BN, Supuran CT, Kamal A. Discovery of curcumin inspired sulfonamide derivatives as a new class of carbonic anhydrase isoforms I, II, IX, and XII inhibitors. J Enzyme Inhib Med Chem 2017; 32:1274-1281. [PMID: 28965419 PMCID: PMC6010064 DOI: 10.1080/14756366.2017.1380638] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
A series of curcumin inspired sulfonamide derivatives was prepared from various chalcones and 4-sulfamoyl benzaldehyde via Claisen-Schmidt condensation. All new compounds were assayed as inhibitors of four human isoforms of the metalloenzyme carbonic anhydrase (hCA, EC 4.2.1.1) isoforms hCA I, II, IX and XII. Interesting inhibitory activities were observed against all these isoforms. hCA I, an isoform involved in several eye diseases was inhibited moderately with KIs in the range of 191.8-904.2 nM, hCA II, an antiglaucoma drug target was highly inhibited by the new sulfonamides, with KIs in the range of 0.75-8.8 nM. hCA IX, a tumor-associated isoform involved in cancer progression and metastatic spread was potently inhibited by the new sulfonamides, with KIs in the range of 2.3-87.3 nM, whereas hCA XII, and antiglaucoma and anticancer drug target, was inhibited with KIs in the range of 6.1-71.8 nM. It is noteworthy that one of the new compounds, 5d, was found to be almost 9 times more selective against hCA II (KI = 0.89 nM) over hCA IX and hCA XII, whereas 5e was 3 and 70 times more selective against hCA II (KI = 0.75 nM) over hCA IX and hCA XII, respectively.
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Affiliation(s)
- P V Sri Ramya
- a Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad , India
| | - Srinivas Angapelly
- a Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad , India
| | - Andrea Angeli
- b NEUROFARBA Department , Università degli Studi di Firenze, Sezione di Scienze Farmaceutiche , Florence , Italy
| | - Chander Singh Digwal
- a Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad , India
| | - Mohammed Arifuddin
- a Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad , India
| | - Bathini Nagendra Babu
- a Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad , India
| | - Claudiu T Supuran
- b NEUROFARBA Department , Università degli Studi di Firenze, Sezione di Scienze Farmaceutiche , Florence , Italy
| | - Ahmed Kamal
- a Department of Medicinal Chemistry , National Institute of Pharmaceutical Education and Research (NIPER) , Hyderabad , India
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9
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Piazzetta P, Marino T, Russo N, Salahub DR. The role of metal substitution in the promiscuity of natural and artificial carbonic anhydrases. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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10
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Structure and function of carbonic anhydrases. Biochem J 2017; 473:2023-32. [PMID: 27407171 DOI: 10.1042/bcj20160115] [Citation(s) in RCA: 588] [Impact Index Per Article: 84.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 03/29/2016] [Indexed: 11/17/2022]
Abstract
Carbonic anhydrases (CAs, EC 4.2.1.1) catalyse the interconversion between CO2 and bicarbonate as well as other hydrolytic reactions. Among the six genetic families known to date, the α-, β-, γ-, δ-, ζ- and η-CAs, detailed kinetic and X-ray crystallographic studies have allowed a deep understanding of the structure-function relationship in this superfamily of proteins. A metal hydroxide nucleophilic species of the enzyme, and a unique active site architecture, with half of it hydrophilic and the opposing part hydrophobic, allow these enzymes to act as some of the most effective catalysts known in Nature. The CA activation and inhibition mechanisms are also known in detail, with a large number of new inhibitor classes being described in the last years. Apart from the zinc binders, some classes of inhibitors anchor to the metal ion coordinated nucleophile, others occlude the entrance of the active site cavity and more recently, compounds binding outside the active site were described. CA inhibition has therapeutic applications for drugs acting as diuretics, antiepileptics, antiglaucoma, antiobesity and antitumour agents. Targeting such enzymes from pathogens may lead to novel anti-infectives. Successful structure-based drug design campaigns allowed the discovery of highly isoform selective CA inhibitors (CAIs), which may lead to a new generation of drugs targeting these widespread enzymes. The use of CAs in CO2 capture processes for mitigating the global temperature rise has also been investigated more recently.
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11
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Alper Türkoğlu E, Şentürk M, Supuran CT, Ekinci D. Carbonic anhydrase inhibitory properties of some uracil derivatives. J Enzyme Inhib Med Chem 2017; 32:74-77. [PMID: 28097897 PMCID: PMC6009904 DOI: 10.1080/14756366.2016.1235043] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Inhibitors of carbonic anhydrase (CA) have been carried out in many therapeutic applications, especially antiglaucoma activity. In this study, we investigated some uracil derivatives (4–12) to inhibit human CA I (hCA I) and II (hCA II) isoenzymes. The KI values of the compounds 4–12 are in the range of 0.085–428 µM for hCA I and of 0.1715–645 µM against hCA II, respectively. It is concluded from the kinetic investigations, all compounds used in the study act as competitive inhibitors with substrate, 4-NPA. Uracil derivatives are emerging agents for the inhibiton of carbonic anhydrase which could be used in biomedicine.
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Affiliation(s)
- Emir Alper Türkoğlu
- a Department of Pharmaceutical Technology , Agri Ibrahim Cecen University , Agri , Turkey
| | - Murat Şentürk
- b Department of Chemistry , Agri Ibrahim Cecen University , Agri , Turkey
| | - Claudiu T Supuran
- c Università degli Studi di Firenze, Polo Scientifico, Laboratorio di Chimica Bioinorganica , Sesto Fiorentino , Florence , Italy
| | - Deniz Ekinci
- d Department of Agricultural Biotechnology , Ondokuz Mayis University , Samsun , Turkey
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12
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Dithiocarbamates effectively inhibit the β-carbonic anhydrase from the dandruff-producing fungus Malassezia globosa. Bioorg Med Chem 2016; 25:1260-1265. [PMID: 28057408 DOI: 10.1016/j.bmc.2016.12.040] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 12/17/2016] [Accepted: 12/23/2016] [Indexed: 12/22/2022]
Abstract
A series of dithiocarbamates (DTCs) was investigated for the inhibition of the β-class carbonic anhydrase (CAs, EC 4.2.1.1) from the fungal parasite Malassezia globosa, MgCA, a validated anti-dandruff drug target. These DTCs incorporate various scaffold, among which those of N,N-dimethylaminoethylenediamine, the aminoalcohols with 3-5 carbon atoms in their molecule, 3-amino-quinuclidine, piperidine, morpholine and piperazine derivatives, as well as phenethylamine and its 4-sulfamoylated derivative. Several DTCs resulted more effective in inhibiting MgCA compared to the standard sulfonamide drug acetazolamide (KI of 74μM), with KIs ranging between 383 and 6235nM. A computational approach, involving a homology modeling of the enzyme and docking inhibitors within its active site, helped us rationalize the results. This study may contribute to better understand the inhibition profile of MgCA, and offer new ideas for the design of modulators of activity which belong to less investigated chemical classes, thus potentially useful to combat dandruff and other fungal infections.
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Abstract
INTRODUCTION Neuropathic pain affects up to 8% of the population with few therapeutic options for its management. No specific drugs are approved for its treatment. AREAS COVERED Recent advances in understanding the pathological mechanisms of this syndrome and the biochemical/pharmacological characterization of novel drug targets, evidenced carbonic anhydrase (CA, EC 4.2.1.1) inhibition as a new approach for designing antineuropathic pain agents. Expert commentary: Peripheral nerve injury negatively influences spinal γ-aminobutyric (GABA)-ergic networks via a reduction in the neuron-specific potassium-chloride (K(+)-Cl(-)) cotransporter (KCC2), which leads to neuropathic allodynia. CA inhibitors (CAIs) reduce the bicarbonate-dependent depolarization of GABAA receptors, showing analgesic effects. Novel classes of selective sulfonamide CA II/VII inhibitors showed highly improved efficacy in animal models of neuropathic pain, compared to acetazolamide, offering the basis for the development of specific therapies of this syndrome based on selective CA isoforms inhibition.
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Affiliation(s)
- Claudiu T Supuran
- a Polo Scientifico, NEUROFARBA Department, Section of Pharmaceutical and Nutriceutical Sciences , Università degli Studi di Firenze , Sesto Fiorentino , Florence , Italy
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14
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Orhan F, Şentürk M, Supuran CT. Interaction of anions with a newly characterized alpha carbonic anhydrase from Halomonas sp. J Enzyme Inhib Med Chem 2015; 31:1119-23. [DOI: 10.3109/14756366.2015.1100177] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Furkan Orhan
- Central Research and Application Laboratory,
- Vocational School,
| | - Murat Şentürk
- Central Research and Application Laboratory,
- Art and Science Faculty, Chemistry Department, Ağri İbrahim Çeçen University, Ağri, Turkey, and
| | - Claudiu T. Supuran
- Laboratorio Di Chimica Bioinorganica, Polo Scientifico, Università Degli Studi Di Firenze, Florence, Italy
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15
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Del Prete S, Vullo D, Osman SM, AlOthman Z, Capasso C, Supuran CT. Anion inhibition studies of the dandruff-producing fungus Malassezia globosa β-carbonic anhydrase MgCA. Bioorg Med Chem Lett 2015; 25:5194-8. [PMID: 26459213 DOI: 10.1016/j.bmcl.2015.09.068] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 09/27/2015] [Accepted: 09/28/2015] [Indexed: 10/22/2022]
Abstract
The genome of the fungal parasite Malassezia globosa, the causative agent of dandruff, contains a single gene annotated as encoding a carbonic anhydrase (CAs, EC 4.2.1.1) belonging to the β-class (MgCA). In an earlier work (J. Med. Chem. 2012, 55, 3513) we have validated this enzyme as an anti-dandruff drug target, reporting that sulfonamide inhibitors show in vitro and in vivo effects, in an animal model of Malassezia infection. However, few classes of compounds apart the sulfonamides, were investigated for their activity against MgCA. Here we present an anion inhibition study of this enzyme, reporting that metal complexing anions such as cyanate, thiocyanate, cyanide, azide are weak MgCA inhibitors (KIs ranging between 6.81 and 45.2 mM) whereas bicarbonate (KI of 0.59 mM) and diethyldithiocarbamate (KI of 0.30 mM) together with sulfamide, sulfamate, phenylboronic acid and phenylarsonic acid were the most effective inhibitors detected so far, with KIs ranging between 83 and 94 μM. This study may help a better understanding of the inhibition profile of this enzyme and may offer the possibility to design new such modulators of activity belonging to different chemical classes.
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Affiliation(s)
- Sonia Del Prete
- Università degli Studi di Firenze, Dipartimento Neurofarba, Sezione di Scienze Farmaceutiche, Polo Scientifico, Sesto Fiorentino, Firenze, Italy; Istituto di Biochimica delle Proteine-CNR, Via P. Castellino 111, 80131 Napoli, Italy
| | - Daniela Vullo
- Università degli Studi di Firenze, Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy
| | - Sameh M Osman
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - Zeid AlOthman
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - Clemente Capasso
- Istituto di Biochimica delle Proteine-CNR, Via P. Castellino 111, 80131 Napoli, Italy.
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Dipartimento Neurofarba, Sezione di Scienze Farmaceutiche, Polo Scientifico, Sesto Fiorentino, Firenze, Italy; Università degli Studi di Firenze, Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy.
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Abstract
Idiopathic intracranial hypertension (IIH) is characterized by an increase of intracranial pressure in the absence of neurologic tumors. The sulfonamide carbonic anhydrase (CA, EC 4.2.1.1) inhibitor (CAI) acetazolamide (AAZ), a compound developed in the 1950s as a diuretic drug and presently used as an antiglaucoma, antiepileptic and diuretic agent, is effective in the treatment of IIH. AAZ is a low nanomolar inhibitor of CA isoforms involved in cerebrospinal fluid (CSF) secretion. Inhibition of brain/choroid plexus CA II, IV, VA and XII leads to a decreased CSF fluid secretion and control of the intracranial pressure. Although many sulfonamide/sulfamate CAIs are in clinical use for decades, apparently only AAZ is being currently used clinically for IIH. We speculate that more lipophilic CAIs such as methazolamide, zonisamide or topiramate should lead to a more effective control of increased intracranial pressure, thus having the opportunity to become useful in the management of IIH.
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Affiliation(s)
- Claudiu T Supuran
- NEUROFARBA Department, Università degli Studi di Firenze, Polo Scientifico, Section of Pharmaceutical and Nutriceutical Sciences, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
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17
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Ozensoy Guler O, Capasso C, Supuran CT. A magnificent enzyme superfamily: carbonic anhydrases, their purification and characterization. J Enzyme Inhib Med Chem 2015; 31:689-94. [PMID: 26118417 DOI: 10.3109/14756366.2015.1059333] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In this paper, we reviewed the purification and characterization methods of the α-carbonic anhydrase (CA, EC 4.2.1.1) class. Six genetic families (α-, β-, γ-, δ-, ζ- and η-CAs) all know to date, all encoding such enzymes in organisms widely distributed over the phylogenetic tree. Starting from the manuscripts published in the 1930s on the isolation and purification of α-CAs from blood and other tissues, and ending with the recent discovery of the last genetic family in protozoa, the η-CAs, considered for long time an α-CA, we present historically the numerous and different procedures which were employed for obtaining these catalysts in pure form. α-CAs possess important application in medicine (as many human α-CA isoforms are drug targets) as well as biotechnological processes, in which the enzymes are ultimately used for CO2 capture in order to mitigate the global warming effects due to greenhouse gases. Recently, it was discovered an involvement of CAs in cancerogenesis as well as infection caused by pathogenic agents such as bacteria, fungi and protozoa. Inhibition studies of CAs identified in the genome of the aforementioned organisms might lead to the discovery of innovative drugs with a novel mechanism of action.
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Affiliation(s)
- Ozen Ozensoy Guler
- a Department of Medical Biology, Faculty of Medicine , Yildirim Beyazit University, Bilkent Campus , Ankara , Turkey
| | - Clemente Capasso
- b CNR-Institute of Biosciences and Bioresources, Napoli, Italy , Napoli , Italy , and
| | - Claudiu T Supuran
- c Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, NEUROFARBA Department, Section of Pharmaceutical and Nutriceutical Chemistry , Florence , Italy
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Dedeoglu N, De Luca V, Isik S, Yildirim H, Kockar F, Capasso C, Supuran CT. Cloning, characterization and anion inhibition study of a β-class carbonic anhydrase from the caries producing pathogen Streptococcus mutans. Bioorg Med Chem 2015; 23:2995-3001. [PMID: 26014482 DOI: 10.1016/j.bmc.2015.05.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 05/04/2015] [Accepted: 05/05/2015] [Indexed: 12/13/2022]
Abstract
The oral pathogenic bacterium involved in human dental caries formation Streptococcus mutans, encodes for two carbonic anhydrase (CA, EC 4.2.1.1) one belonging to the α- and the other one to the β-class. This last enzyme (SmuCA) has been cloned, characterized and investigated for its inhibition profile with a major class of CA inhibitors, the inorganic anions. Here we show that SmuCA has a good catalytic activity for the CO2 hydration reaction, with kcat 4.2×10(5)s(-1) and kcat/Km of 5.8×10(7)M(-1)×s(-1), being inhibited by cyanate, carbonate, stannate, divannadate and diethyldithiocarbamate in the submillimolar range (KIs of 0.30-0.64mM) and more efficiently by sulfamide, sulfamate, phenylboronic acid and phenylarsonic acid (KIs of 15-46μM). The anion inhibition profile of the S. mutans enzyme is very different from other α- and β-CAs investigated earlier. Identification of effective inhibitors of this new enzyme may lead to pharmacological tools useful for understanding the role of S. mutans CAs in dental caries formation, and eventually the development of pharmacological agents with a new mechanism of antibacterial action.
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Affiliation(s)
- Nurcan Dedeoglu
- Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino (Firenze), Italy; Department of Chemistry, Faculty of Art & Science, Balikesir University, Balikesir, Turkey
| | - Viviana De Luca
- Istituto di Biochimica delle Proteine-CNR, Via P. Castellino 111, 80131 Napoli, Italy
| | - Semra Isik
- Department of Chemistry, Faculty of Art & Science, Balikesir University, Balikesir, Turkey
| | - Hatice Yildirim
- Department of Biology, Faculty of Art & Science, Balikesir University, Balikesir, Turkey
| | - Feray Kockar
- Department of Biology, Faculty of Art & Science, Balikesir University, Balikesir, Turkey
| | - Clemente Capasso
- Istituto di Biochimica delle Proteine-CNR, Via P. Castellino 111, 80131 Napoli, Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Polo Scientifico, Dipartimento NEUROFABA, Sezione di Scienze Farmaceutiche e Nutraceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Firenze), Italy.
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Salmas RE, Senturk M, Yurtsever M, Durdagi S. Discovering novel carbonic anhydrase type IX (CA IX) inhibitors from seven million compounds using virtual screening and in vitro analysis. J Enzyme Inhib Med Chem 2015; 31:425-33. [PMID: 25950196 DOI: 10.3109/14756366.2015.1036049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Carbonic anhydrase type IX (CA IX) enzyme is mostly over expressed in different cancer cell lines and tumor tissues. Potent CA IX inhibitors can be effective for adjusting the pH imbalance in tumor cells. In the present work, we represented the successful application of high throughput virtual screening (HTVS) of large dataset from ZINC database included of ∼7 million compounds to discover novel inhibitors of CA IX. HTVS and molecular docking were performed using consequence Glide/standard precision (SP), extra precision (XP) and induced fit docking (IFD) molecular docking protocols. For each compound, docking code calculates a set of low-energy poses and then exhaustively scans the binding pocket of the target with small compounds. Novel CA IX inhibitor candidates were suggested based on molecular modeling studies and a few of them were tested using in vitro analysis. These compounds were determined as good inhibitors against human CA IX target with Ki in the range of 0.85-1.58 μM. In order to predict the pharmaceutical properties of the selected compounds, ADME (absorption, distribution, metabolism and excretion) analysis was also carried out.
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Affiliation(s)
| | - Murat Senturk
- b Department of Chemistry , Ağrı Ibrahim Çeçen University , Ağrı , Turkey , and
| | - Mine Yurtsever
- a Department of Chemistry , İstanbul Technical University , İstanbul , Turkey
| | - Serdar Durdagi
- c Department of Biophysics , School of Medicine, Bahçeşehir University , Istanbul , Turkey
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Dedeoglu N, DeLuca V, Isik S, Yildirim H, Kockar F, Capasso C, Supuran CT. Sulfonamide inhibition study of the β-class carbonic anhydrase from the caries producing pathogen Streptococcus mutans. Bioorg Med Chem Lett 2015; 25:2291-7. [PMID: 25913199 DOI: 10.1016/j.bmcl.2015.04.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 04/09/2015] [Accepted: 04/10/2015] [Indexed: 12/13/2022]
Abstract
Streptococcus mutans, the oral pathogenic bacterium provoking dental caries formation, encodes for a β-class carbonic anhydrase (CA, EC 4.2.1.1), SmuCA. This enzyme was cloned, characterized and investigated for its inhibition profile with the major class of CA inhibitors, the primary sulfonamides. SmuCA has a good catalytic activity for the CO2 hydration reaction, with a kcat of 4.2×10(5) s(-1) and kcat/Km of 5.8×10(7) M(-1)×s(-1), and is efficiently inhibited by most sulfonamides (KIs of 246 nM-13.5 μM). The best SmuCA inhibitors were bromosulfanilamide, deacetylated acetazolamide, 4-hydroxymethylbenzenesulfonamide, a pyrimidine-substituted sulfanilamide derivative, aminobenzolamide and compounds structurally similar to it, as well as acetazolamide, methazolamide, indisulam and valdecoxib. These compounds showed inhibition constants ranging between 246 and 468 nM. Identification of effective inhibitors of this enzyme may lead to pharmacological tools useful for understanding the role of S. mutans CAs in dental caries formation, and eventually the development of pharmacological agents with a new mechanism of antibacterial action.
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Affiliation(s)
- Nurcan Dedeoglu
- Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino (Firenze), Italy; Department of Chemistry, Faculty of Art & Science, Balikesir University, Balikesir, Turkey
| | - Viviana DeLuca
- Istituto di Biochimica delle Proteine-CNR, Via P. Castellino 111, 80131 Napoli, Italy
| | - Semra Isik
- Department of Chemistry, Faculty of Art & Science, Balikesir University, Balikesir, Turkey
| | - Hatice Yildirim
- Department of Biology, Faculty of Art & Science, Balikesir University, Balikesir, Turkey
| | - Feray Kockar
- Department of Biology, Faculty of Art & Science, Balikesir University, Balikesir, Turkey
| | - Clemente Capasso
- Istituto di Biochimica delle Proteine-CNR, Via P. Castellino 111, 80131 Napoli, Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Polo Scientifico, Dipartimento NEUROFABA, Sezione di Scienze Farmaceutiche e Nutraceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Firenze), Italy.
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Durgun M, Turkmen H, Ceruso M, Supuran CT. Synthesis of Schiff base derivatives of 4-(2-aminoethyl)-benzenesulfonamide with inhibitory activity against carbonic anhydrase isoforms I, II, IX and XII. Bioorg Med Chem Lett 2015; 25:2377-81. [PMID: 25913118 DOI: 10.1016/j.bmcl.2015.04.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/02/2015] [Accepted: 04/04/2015] [Indexed: 11/26/2022]
Abstract
Schiff base derivatives were obtained by reaction of 4-(2-aminoethyl)benzenesulfonamide with aromatic aldehydes. The corresponding secondary amine derivatives were also prepared by reduction of the imine compounds with NaBH4. These derivatives were investigated as inhibitors of four human carbonic anhydrase (CA, EC 4.2.1.1) isoforms, the cytosolic isozymes hCA I and II, as well as, the transmembrane, tumor-associated hCA IX and XII. Some of the newly synthesised compounds showed effective inhibitory activities against these CA isozymes. Many low nanomolar inhibitors were detected against all isoforms among the secondary amines whereas the Schiff bases were by far less active compared to the corresponding reduced derivatives among all investigated isoforms.
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Affiliation(s)
- Mustafa Durgun
- Department of Chemistry, Faculty of Arts and Sciences, Harran University, 63190 Sanliurfa, Turkey.
| | - Hasan Turkmen
- Department of Medical Pharmacology, Faculty of Medicine, Harran University, 63190 Sanliurfa, Turkey
| | - Mariangela Ceruso
- Università degli Studi di Firenze, Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy; Università degli Studi di Firenze, Neurofarba Dept., Section of Pharmaceutical and Nutriceutical Sciences, Via U. Schiff 6, 50019 Sesto Fiorentino (Florence), Italy.
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22
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Tanc M, Carta F, Scozzafava A, Supuran CT. α-Carbonic Anhydrases Possess Thioesterase Activity. ACS Med Chem Lett 2015; 6:292-5. [PMID: 25815148 DOI: 10.1021/ml500470b] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 01/17/2015] [Indexed: 12/30/2022] Open
Abstract
The α-carbonic anhydrases (CAs, EC 4.2.1.1) show catalytic versatility acting as esterases with carboxylic, sulfonic, and phosphate esters. Here we prove by kinetic, spectroscopic, and MS studies that they also possess thioesterase activity with a dithiocarbamate ester as a substrate (PhSO2NHCSSMe). Its CA-mediated hydrolysis leads to benzenesulfonamide, methyl mercaptan, and COS. The CA thioesterase activity may be useful for designing prodrug enzyme inhibitors, whereas some CA isoforms may use this activity for modulating physiologic/pathologic processes, which are possibly amenable to drug discovery of agents with multiple mechanisms of action.
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Affiliation(s)
- Muhammet Tanc
- Laboratorio
di Chimica Bioinorganica, Università degli Studi di Firenze, Polo Scientifico, Room 188, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
- NEUROFARBA
Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Fabrizio Carta
- NEUROFARBA
Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Andrea Scozzafava
- NEUROFARBA
Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Claudiu T. Supuran
- Laboratorio
di Chimica Bioinorganica, Università degli Studi di Firenze, Polo Scientifico, Room 188, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
- NEUROFARBA
Department, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
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Palmer C, Supuran CT. A Key Opinion Leader interview: insight into the research and career of Prof. Claudiu T Supuran. Expert Opin Ther Pat 2015; 25:501-5. [DOI: 10.1517/13543776.2015.1027045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Singasane N, Kharkar PS, Ceruso M, Supuran CT, Toraskar MP. Inhibition of carbonic anhydrase isoforms I, II, IX and XII with Schiff’s bases incorporating iminoureido moieties. J Enzyme Inhib Med Chem 2015; 30:901-7. [PMID: 25744513 DOI: 10.3109/14756366.2014.986118] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Namrata Singasane
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth’s College of Pharmacy, Navi Mumbai, India
| | - Prashant S. Kharkar
- Department of Pharmaceutical Chemistry, SPP School of Pharmacy and Technology Management, SVKM’s NMIMS, Mumbai, India
| | - Mariangela Ceruso
- Laboratorio di Chimica Bioinorganica, Università degli Studi di Firenze, Sesto Fiorentino (Firenze), Italy, and
- Neurofarba Department, Sezione di Scienze Farmaceutiche, Sesto Fiorentino (Firenze), Italy
| | - Claudiu T. Supuran
- Laboratorio di Chimica Bioinorganica, Università degli Studi di Firenze, Sesto Fiorentino (Firenze), Italy, and
- Neurofarba Department, Sezione di Scienze Farmaceutiche, Sesto Fiorentino (Firenze), Italy
| | - Mrunmayee P. Toraskar
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth’s College of Pharmacy, Navi Mumbai, India
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Arslan M, Şentürk M, Fidan İ, Talaz O, Ekinci D, Coşgun S, Supuran CT. Synthesis of 3,4-dihydroxypyrrolidine-2,5-dione and 3,5-dihydroxybenzoic acid derivatives and evaluation of the carbonic anhydrase I and II inhibition. J Enzyme Inhib Med Chem 2015; 30:896-900. [DOI: 10.3109/14756366.2014.983917] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Mehmet Arslan
- Engineering Faculty, Department of Polymer Engineering, Yalova University, Yalova, Turkey,
- Science and Art Faculty, Chemistry Department, Fatih University, Istanbul, Turkey,
| | - Murat Şentürk
- Science and Art Faculty, Chemistry Department, Ağri İbrahim Çeçen University, Ağri, Turkey,
| | - İsmail Fidan
- Chemistry Department, Gebze Institute of Technology, Kocaeli, Turkey,
| | - Oktay Talaz
- Department of Chemistry, Karamanoğlu Mehmetbey University, Karaman, Turkey,
| | - Deniz Ekinci
- Faculty of Agriculture, Department of Agricultural Biotechnology, Ondokuz Mayıs University, Samsun, Turkey, and
| | - Sedat Coşgun
- Science and Art Faculty, Chemistry Department, Fatih University, Istanbul, Turkey,
| | - Claudiu T. Supuran
- Polo Scientifico, Laboratorio di Chimica Bioinorganica, Università degli Studi di Firenze, Sesto Fiorentino, Florence, Italy
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Ekhteiari Salmas R, Mestanoglu M, Durdagi S, Sentürk M, Kaya AA, Kaya EÇ. Kinetic and in silico studies of hydroxy-based inhibitors of carbonic anhydrase isoforms I and II. J Enzyme Inhib Med Chem 2015; 31:31-7. [PMID: 25676327 DOI: 10.3109/14756366.2014.1003216] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A series of hydroxy and phenolic compounds have been assayed for the inhibition of two physiologically relevant carbonic anhydrase (CA, EC 4.2.1.1) isozymes, the cytosolic human isozymes I and II. The investigated molecules showed inhibition constants in the range of 1.07-4003 and 0.09-31.5 μM at the hCA I and hCA II enzymes, respectively. In order to investigate the binding mechanisms of these inhibitors, in silico studies were also applied. Molecular docking scores of the studied compounds are compared using three different scoring algorithms, namely Glide/SP, Glide/XP and Glide/IFD. In addition, different ADME (absorption, distribution, metabolism and excretion) analysis was performed. All the examined compounds were found within the acceptable range of pharmacokinetic profiles.
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Affiliation(s)
| | - Mert Mestanoglu
- b School of Medicine, Bahcesehir University , Istanbul , Turkey
| | - Serdar Durdagi
- c Department of Biophysics , School of Medicine, Bahcesehir University , Istanbul , Turkey
| | - Murat Sentürk
- d Department of Chemistry, Art and Science Faculty , Agri Ibrahim Cecen University , Agri , Turkey , and
| | - A Afşin Kaya
- e School of Health, Gumushane University , Gumushane , Turkey
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Vullo D, Isik S, Bozdag M, Carta F, Supuran CT. 7-Amino-3,4-dihydro-1H-quinolin-2-one, a compound similar to the substituted coumarins, inhibits α-carbonic anhydrases without hydrolysis of the lactam ring. J Enzyme Inhib Med Chem 2015; 30:773-7. [PMID: 25672528 DOI: 10.3109/14756366.2014.970185] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
7-Amino-3,4-dihydro-1H-quinolin-2-one, a compound structurally similar to coumarins, recently discovered class of inhibitors of the α-carbonic anhydrases (CAs, EC 4.2.1.1) was investigated for its interaction with all human (h) CA isoforms, hCA I-XIV. The compound was not an inhibitor of the cytosolic, widespread isoform hCA II (K(I) > 10 µM), was a weak inhibitor of hCA I, III, IV, VA, VI and XIII (K(I)s in the range of 0.90-9.5 µM) but effectively inhibited the cytosolic isoform hCA VII (K(I) of 480 nM) as well as the transmembrane isoforms hCA IX, XII and XIV (K(I)s in the range of 16.1-510 nM). Against many CA isoforms this lactam was a better inhibitor compared to the structurally similar 4-methyl-7-aminocoumarin, but unlike this compound, the lactam ring was not hydrolyzed and the inhibition was due to the intact bicyclic amino-quinolinone scaffold. Bicyclic lactams strucurally related to coumarins are thus a new class of CA inhibitors possessing however a distinct inhibition mechanism compared to the coumarins which undergo a hydrolysis of their lactone ring for generating the enzyme inhibitory species.
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Affiliation(s)
- Daniela Vullo
- a Department of Chemistry "Ugo Shiff" , University of Florence , Sesto Fiorentino , Italy
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Bozdag M, Carta F, Vullo D, Isik S, AlOthman Z, Osman SM, Scozzafava A, Supuran CT. Dithiocarbamates with potent inhibitory activity against the Saccharomyces cerevisiae β-carbonic anhydrase. J Enzyme Inhib Med Chem 2015; 31:132-6. [PMID: 25669351 DOI: 10.3109/14756366.2015.1010529] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Dithiocarbamates (DTCs) prepared from primary or secondary amines, which incorporated amino/hydroxyl-alkyl, mono-/bicyclic aliphatic/heterocyclic rings based on the quinuclidine, piperidine, hydroxy-/carboxy-/amino-substituted piperidine, morpholine and piperazine scaffolds, were investigated for the inhibition of α- and β-carbonic anhydrases (CAs, EC 4.2.1.1) of pharmacologic relevance, such as the human (h) isoform hCA I and II, as well as the Saccharomyces cerevisiae β-CA, scCA. The yeast and its β-CA were shown earlier to be useful models of pathogenic fungal infections. The DTCs investigated here were medium potency hCA I inhibitors (K(I)s of 66.5-910 nM), were more effective as hCA II inhibitors (K(I)s of 8.9-107 nM) and some of them showed excellent, low nanomolar activity against the yeast enzyme, with inhibition constants ranging between 6.4 and 259 nM. The detailed structure activity relationship for inhibition of the yeast and human enzymes is discussed. Several of the investigated DTCs showed excellent selectivity ratios for inhibiting the yeast over the human cytosolic CA isoforms.
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Affiliation(s)
- Murat Bozdag
- a Laboratorio di Chimica Bioinorganica, Dipartimento di Chimica , Università degli Studi di Firenze , Sesto Fiorentino , Florence , Italy
| | - Fabrizio Carta
- a Laboratorio di Chimica Bioinorganica, Dipartimento di Chimica , Università degli Studi di Firenze , Sesto Fiorentino , Florence , Italy
| | - Daniela Vullo
- a Laboratorio di Chimica Bioinorganica, Dipartimento di Chimica , Università degli Studi di Firenze , Sesto Fiorentino , Florence , Italy
| | - Semra Isik
- a Laboratorio di Chimica Bioinorganica, Dipartimento di Chimica , Università degli Studi di Firenze , Sesto Fiorentino , Florence , Italy
| | - Zeid AlOthman
- b Department of Chemistry, College of Science , King Saud University , Riyadh , Saudi Arabia , and
| | - Sameh M Osman
- b Department of Chemistry, College of Science , King Saud University , Riyadh , Saudi Arabia , and
| | - Andrea Scozzafava
- a Laboratorio di Chimica Bioinorganica, Dipartimento di Chimica , Università degli Studi di Firenze , Sesto Fiorentino , Florence , Italy
| | - Claudiu T Supuran
- a Laboratorio di Chimica Bioinorganica, Dipartimento di Chimica , Università degli Studi di Firenze , Sesto Fiorentino , Florence , Italy .,c Sezione di Scienze Farmaceutiche, Dipartimento NEUROFARBA , Università degli Studi di Firenze , Sesto Fiorentino , Florence , Italy
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Öztürk Sarikaya SB, Kaya AA, Kaya EÇ, Şentürk M. Synthesis and determination of some biological activities of novel 2,4-dinitrophenyl derivatives. Arch Pharm (Weinheim) 2015; 348:214-20. [PMID: 25644396 DOI: 10.1002/ardp.201400330] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 11/10/2014] [Accepted: 11/14/2014] [Indexed: 11/09/2022]
Abstract
The antioxidant and radical scavenging activities of the synthesized compounds 3, 5, and 6 were determined by various in vitro assays such as 2,2-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid radical (ABTS(·+) ) scavenging, ferric ion (Fe(3+) ) reducing power and ferrous ion (Fe(2+) ) chelating activities. Moreover, these activities were compared to those of standard antioxidants such as butylated hydroxyanisole, butylated hydroxytoluene, and trolox. The results showed that the new compounds (3, 5, and 6) had potential antioxidant activity. Besides, inhibition of the two human cytosolic carbonic anhydrase (hCA, EC 4.2.1.1) isozymes I and II with some nitrobenzene compounds was investigated. Compounds 1-6 showed Ki values in the range of 4.88-193.4 µM and 5.295-54.75 µM for hCA I and hCA II, respectively.
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Affiliation(s)
- Sevim B Öztürk Sarikaya
- Engineering and Natural Sciences Faculty, Food Engineering Department, Gumushane University, Gumushane, Turkey
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Ivanova J, Leitans J, Tanc M, Kazaks A, Zalubovskis R, Supuran CT, Tars K. X-ray crystallography-promoted drug design of carbonic anhydrase inhibitors. Chem Commun (Camb) 2015; 51:7108-11. [DOI: 10.1039/c5cc01854d] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The X-ray co-crystallization experiments of saccharin derivative with carbonic anhydrase revealed hydrolysis of isothiazole ring of saccharin and guided design of new inhibitors.
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Affiliation(s)
| | - Janis Leitans
- Biomedical Research and Study Center
- LV-1067 Riga
- Latvia
| | - Muhammet Tanc
- Università degli Studi di Firenze
- NEUROFARBA Department
- Section of Pharmaceutical Chemistry
- 50019 Sesto Fiorentino
- Italy
| | - Andris Kazaks
- Biomedical Research and Study Center
- LV-1067 Riga
- Latvia
| | | | - Claudiu T. Supuran
- Università degli Studi di Firenze
- NEUROFARBA Department
- Section of Pharmaceutical Chemistry
- 50019 Sesto Fiorentino
- Italy
| | - Kaspars Tars
- Biomedical Research and Study Center
- LV-1067 Riga
- Latvia
- University of Latvia
- Faculty of Biology
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SitaRam, Ceruso M, Khloya P, Supuran CT, Sharma PK. 4-Functionalized 1,3-diarylpyrazoles bearing 6-aminosulfonylbenzothiazole moiety as potent inhibitors of carbonic anhydrase isoforms hCA I, II, IX and XII. Bioorg Med Chem 2014; 22:6945-52. [DOI: 10.1016/j.bmc.2014.10.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 10/10/2014] [Accepted: 10/14/2014] [Indexed: 12/01/2022]
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Sarikaya B, Ceruso M, Carta F, Supuran CT. Inhibition of carbonic anhydrase isoforms I, II, IX and XII with novel Schiff bases: Identification of selective inhibitors for the tumor-associated isoforms over the cytosolic ones. Bioorg Med Chem 2014; 22:5883-90. [DOI: 10.1016/j.bmc.2014.09.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2014] [Revised: 09/09/2014] [Accepted: 09/10/2014] [Indexed: 12/24/2022]
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Abdel-Aziz AAM, El-Azab AS, Ceruso M, Supuran CT. Carbonic anhydrase inhibitory activity of sulfonamides and carboxylic acids incorporating cyclic imide scaffolds. Bioorg Med Chem Lett 2014; 24:5185-9. [DOI: 10.1016/j.bmcl.2014.09.076] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 09/24/2014] [Accepted: 09/25/2014] [Indexed: 12/15/2022]
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Demirdag R, Comakli V, Kuzu M, Yerlikaya E, Şentürk M. Purification and Characterization of Carbonic Anhydrase from Ağrı Balık Lake Trout Gill (Salmo trutta labrax) and Effects of Sulfonamides on Enzyme Activity. J Biochem Mol Toxicol 2014; 29:123-8. [DOI: 10.1002/jbt.21675] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 09/11/2014] [Accepted: 09/14/2014] [Indexed: 11/07/2022]
Affiliation(s)
| | - Veysal Comakli
- School of Health; Agri Ibrahim Cecen University; Agri Turkey
| | - Muslum Kuzu
- Faculty of Pharmacy; Agri Ibrahim Cecen University; Agri Turkey
| | | | - Murat Şentürk
- Art and Science Faculty; Agri Ibrahim Cecen University; Chemistry Department; Agri Turkey
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Vullo D, Del Prete S, Osman SM, Scozzafava A, Alothman Z, Supuran CT, Capasso C. Anion inhibition study of the β-class carbonic anhydrase (PgiCAb) from the oral pathogen Porphyromonas gingivalis. Bioorg Med Chem Lett 2014; 24:4402-4406. [DOI: 10.1016/j.bmcl.2014.08.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 08/01/2014] [Accepted: 08/05/2014] [Indexed: 11/24/2022]
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Alafeefy AM, Ceruso M, Al-Tamimi AMS, Del Prete S, Capasso C, Supuran CT. Quinazoline-sulfonamides with potent inhibitory activity against the α-carbonic anhydrase from Vibrio cholerae. Bioorg Med Chem 2014; 22:5133-40. [PMID: 25194929 DOI: 10.1016/j.bmc.2014.08.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 08/08/2014] [Accepted: 08/13/2014] [Indexed: 12/25/2022]
Abstract
Thirteen novel sulfonamide derivatives incorporating the quinazoline scaffold were synthesized by simple, eco-friendly procedures. These compounds were tested for their ability to inhibit the α-carbonic anhydrases (CA, EC 4.2.1.1) from Vibrio cholerae (VchCA) as well as the human α-CA isoforms, hCA I and hCA II. Nine compounds were highly effective, nanomolar inhibitors of the pathogenic enzyme VchCA. Three of them were also highly effective sub-nanomolar inhibitors of the cytosolic isoform II. The best VchCA inhibitor had a KI of 2.7 nM. Many of these developed compounds showed high selectivity for inhibition of the bacterial over the mammalian CA isoforms, with one compound possessing selectivity ratios as high as 97.9 against hCA I and 9.7 against hCA II. Compound 9d was another highly effective VchCA inhibitor presenting a selectivity ratio of 99.1 and 8.1 against hCA I and hCA II, respectively. These results suggest that sulfonamides with quinazoline backbone could be considered suitable tools to better understand the role of bacterial CAs in pathogenesis.
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Affiliation(s)
- Ahmed M Alafeefy
- Department of Pharmaceutical Chemistry, College of Pharmacy, Salman Bin Abdulaziz University, PO Box 173, Alkharj 11942, Saudi Arabia.
| | - Mariangela Ceruso
- Università degli Studi di Firenze, Dipartimento di Chimica, Laboratorio di Chimica Bioinorganica, Rm 188, Via della Lastruccia 3, I 50019 Sesto Fiorentino (Firenze), Italy
| | - Abdul-Malek S Al-Tamimi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Salman Bin Abdulaziz University, PO Box 173, Alkharj 11942, Saudi Arabia
| | - Sonia Del Prete
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, 80131 Napoli, Italy
| | - Clemente Capasso
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, 80131 Napoli, Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Dipartimento di Chimica, Laboratorio di Chimica Bioinorganica, Rm 188, Via della Lastruccia 3, I 50019 Sesto Fiorentino (Firenze), Italy; Università degli Studi di Firenze, Neurofarba Department, Section of Pharmaceutical and Nutriceutical Sciences, Via U. Schiff 6, 50019 Sesto Fiorentino (Florence), Italy.
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Del Prete S, Vullo D, Fisher GM, Andrews KT, Poulsen SA, Capasso C, Supuran CT. Discovery of a new family of carbonic anhydrases in the malaria pathogen Plasmodium falciparum--the η-carbonic anhydrases. Bioorg Med Chem Lett 2014; 24:4389-4396. [PMID: 25168745 DOI: 10.1016/j.bmcl.2014.08.015] [Citation(s) in RCA: 254] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 08/01/2014] [Accepted: 08/05/2014] [Indexed: 12/14/2022]
Abstract
The genome of the protozoan parasite Plasmodium falciparum, the causative agent of the most lethal type of human malaria, contains a single gene annotated as encoding a carbonic anhydrase (CAs, EC 4.2.1.1) thought to belong to the α-class, PfCA. Here we demonstrate the kinetic properties of PfCA for the CO2 hydration reaction, as well as an inhibition study of this enzyme with inorganic and complex anions and other molecules known to interact with zinc proteins, including sulfamide, sulfamic acid, and phenylboronic/arsonic acids, detecting several low micromolar inhibitors. A closer examination of the sequence of this and the CAs from other Plasmodium spp., as well as a phylogenetic analysis, revealed that these protozoa encode for a yet undisclosed, new genetic family of CAs termed the η-CA class. The main features of the η-CAs are described in this report.
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Affiliation(s)
- Sonia Del Prete
- Istituto di Bioscienze e Biorisorse (IBBR)-CNR, via P. Castellino 111, 80131 Napoli, Italy
| | - Daniela Vullo
- Università degli Studi di Firenze, Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy
| | - Gillian M Fisher
- Eskitis Institute for Drug Discovery, Griffith University, Nathan, Queensland 4111, Australia
| | - Katherine T Andrews
- Eskitis Institute for Drug Discovery, Griffith University, Nathan, Queensland 4111, Australia
| | - Sally-Ann Poulsen
- Eskitis Institute for Drug Discovery, Griffith University, Nathan, Queensland 4111, Australia
| | - Clemente Capasso
- Istituto di Bioscienze e Biorisorse (IBBR)-CNR, via P. Castellino 111, 80131 Napoli, Italy.
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy; Università degli Studi di Firenze, Dipartimento Neurofarba, Sezione di Scienze Farmaceutiche, Polo Scientifico, Sesto Fiorentino, Firenze, Italy.
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Rosatelli E, Carotti A, Ceruso M, Supuran CT, Gioiello A. Flow synthesis and biological activity of aryl sulfonamides as selective carbonic anhydrase IX and XII inhibitors. Bioorg Med Chem Lett 2014; 24:3422-5. [DOI: 10.1016/j.bmcl.2014.05.086] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 05/21/2014] [Accepted: 05/22/2014] [Indexed: 11/30/2022]
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Tauro M, Loiodice F, Ceruso M, Supuran CT, Tortorella P. Dual carbonic anhydrase/matrix metalloproteinase inhibitors incorporating bisphosphonic acid moieties targeting bone tumors. Bioorg Med Chem Lett 2014; 24:2617-20. [DOI: 10.1016/j.bmcl.2014.04.077] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/15/2014] [Accepted: 04/21/2014] [Indexed: 11/29/2022]
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Tauro M, Loiodice F, Ceruso M, Supuran CT, Tortorella P. Arylamino bisphosphonates: Potent and selective inhibitors of the tumor-associated carbonic anhydrase XII. Bioorg Med Chem Lett 2014; 24:1941-3. [DOI: 10.1016/j.bmcl.2014.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 02/28/2014] [Accepted: 03/01/2014] [Indexed: 01/21/2023]
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Congiu C, Onnis V, Balboni G, Supuran CT. Synthesis and carbonic anhydrase I, II, IX and XII inhibition studies of 4-N,N-disubstituted sulfanilamides incorporating 4,4,4-trifluoro-3-oxo-but-1-enyl, phenacylthiourea and imidazol-2(3H)-one/thione moieties. Bioorg Med Chem Lett 2014; 24:1776-9. [DOI: 10.1016/j.bmcl.2014.02.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 02/08/2014] [Accepted: 02/11/2014] [Indexed: 11/26/2022]
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42
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Abdel-Aziz AAM, El-Azab AS, Ekinci D, Şentürk M, Supuran CT. Investigation of arenesulfonyl-2-imidazolidinones as potent carbonic anhydrase inhibitors. J Enzyme Inhib Med Chem 2014; 30:81-4. [DOI: 10.3109/14756366.2014.880696] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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43
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Korkmaz N, Obaidi OA, Senturk M, Astley D, Ekinci D, Supuran CT. Synthesis and biological activity of novel thiourea derivatives as carbonic anhydrase inhibitors. J Enzyme Inhib Med Chem 2014; 30:75-80. [PMID: 24666304 DOI: 10.3109/14756366.2013.879656] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A new series of chiral thiourea derivatives (5a-5c) and thiourea containing benzimidazole moieties (9b-9e) were synthesized from different amino acids (l-valine, l-isoleucine, l-methionine, l-phenylalanine, and d-phenylglycine). The compounds were characterized and tested against the two most studied members of the pH regulatory enzyme family, carbonic anhydrase (CA, EC 4.2.1.1). KI values of the novel compounds were measured in the range of 3.4-73.6 μM for hCA I isozyme and 8.7-1.44.2 μM for hCA II isozyme, respectively. Phenol was also tested as standard in order to understand the structure activity relationship and the clinically used sulfonamide acetazolamide was tested for comparison reasons. All of the compounds exhibited competitive inhibition with 4-nitrophenylacetate as substrate.
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Affiliation(s)
- Neslihan Korkmaz
- Department of Chemistry, Science Faculty, Ege University , Izmir , Turkey
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44
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Alafeefy AM, Abdel-Aziz HA, Vullo D, Al-Tamimi AMS, Awaad AS, Mohamed MA, Capasso C, Supuran CT. Inhibition of human carbonic anhydrase isozymes I, II, IX and XII with a new series of sulfonamides incorporating aroylhydrazone-, [1,2,4]triazolo[3,4-b][1,3,4]thiadiazinyl- or 2-(cyanophenylmethylene)-1,3,4-thiadiazol-3(2H)-yl moieties. J Enzyme Inhib Med Chem 2014; 30:52-6. [PMID: 24666294 DOI: 10.3109/14756366.2013.877897] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
A series of benzenesulfonamides incorporating aroylhydrazone, piperidinyl, sulfone, [1,2,4]triazolo[3,4-b][1,3,4]thiadiazinyl- or 2-(cyanophenyl-methylene)-1,3,4-thiadiazol-3(2H)-yl moieties was investigated as inhibitors of four α-carbonic anhydrases (CAs, EC 4.2.1.1), the human (h) isoforms hCA I, II (cytosolic, offtarget enzymes) and hCA IX and XII (transmembrane, tumor-associated isoforms). Low nanomolar activity was observed against hCA II (KIs of 0.56-17.1 nM) with these sulfonamides, whereas the slow cytosolic isoform hCA I was less inhibited by these compounds (KIs of 86.4 nM-32.8 µM). Most of these sulfonamides significantly inhibited CA IX, with KIs in the range of 4.5-47.0 nM, although some of the derivatives incorporating bulkier bicyclic moieties, as well as 2-thienyl fragments, showed a weaker activity against this isoform (KIs in the range 50.1-553 nM). All the investigated compounds also inhibited CA XII with KIs in the range 0.85-376 nM. The best inhibitors were those incorporating bulky [1,2,4]triazolo[3,4-b][1,3,4]thiadiazinyl moieties and 1,3,4-thiadiazol-3(2H)-yl groups.
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Affiliation(s)
- Ahmed M Alafeefy
- Department of Pharmaceutical Chemistry, College of Pharmacy, Salman bin Abdulaziz University , Alkharj , Saudi Arabia
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45
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Design, synthesis and evaluation of N-substituted saccharin derivatives as selective inhibitors of tumor-associated carbonic anhydrase XII. Bioorg Med Chem 2014; 22:1821-31. [DOI: 10.1016/j.bmc.2014.01.056] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 01/26/2014] [Accepted: 01/30/2014] [Indexed: 12/11/2022]
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46
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Saluja AK, Tiwari M, Vullo D, Supuran CT. Substituted benzene sulfonamides incorporating 1,3,5-triazinyl moieties potently inhibit human carbonic anhydrases II, IX and XII. Bioorg Med Chem Lett 2014; 24:1310-4. [DOI: 10.1016/j.bmcl.2014.01.048] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Revised: 01/18/2014] [Accepted: 01/20/2014] [Indexed: 10/25/2022]
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47
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Anion inhibition study of the β-carbonic anhydrase (CahB1) from the cyanobacterium Coleofasciculus chthonoplastes (ex-Microcoleus chthonoplastes). Bioorg Med Chem 2014; 22:1667-71. [DOI: 10.1016/j.bmc.2014.01.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 01/15/2014] [Accepted: 01/17/2014] [Indexed: 11/17/2022]
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48
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6-Triazolyl-substituted sulfocoumarins are potent, selective inhibitors of the tumor-associated carbonic anhydrases IX and XII. Bioorg Med Chem Lett 2014; 24:1256-60. [DOI: 10.1016/j.bmcl.2014.01.076] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 01/22/2014] [Accepted: 01/23/2014] [Indexed: 11/20/2022]
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49
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Mercan L, Ekinci D, Supuran CT. Characterization of carbonic anhydrase from Turkish native "Gerze" chicken and influences of metal ions on enzyme activity. J Enzyme Inhib Med Chem 2014; 29:773-6. [PMID: 24506207 DOI: 10.3109/14756366.2013.855208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract Carbonic anhydrase was purified and characterized from erythrocytes of the Turkish native chicken, Gerze, for the first time. The enzyme was purified 57.65-fold with a yield of 52%, and a specific activity of 954.08 U/mg proteins having optimum pH at 8.0; optimum temperature at 30 °C; optimum ionic strength at 10 mM and stable pH at 8.0. The purified enzyme had apparent KM and Vmax values of 0.73 mM and 0.236 μmol × min(-1), respectively. Al(+3), Hg(+2), Cu(+2), Pb(+2), and Cd(+2) showed inhibitory effects on the enzyme. Pb(+2) exhibited the strongest inhibitory action. Cd(+2) and Hg(+2) were moderate inhibitor, whereas Al(+3) and Cu(+2) showed weaker actions. All tested metals inhibited the enzyme in competitive manner. Our findings indicate that these metals inhibit the chicken enzyme in a similar manner to other α-CAs from mammals investigated earlier, but susceptibility to various metals differ between the native chicken and other mammalian enzymes.
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Affiliation(s)
- Levent Mercan
- Department of Agricultural Biotechnology, Faculty of Agriculture, Ondokuz Mayıs University , Samsun , Turkey and
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50
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Mercan L, Sirkecioğlu N, Aksakal E, Bayır M, Bayır A, Aras M, Ekinci D. Goose fat, a promising nutrient for fish feeding, activates antioxidant enzymes in rainbow trout, Oncorhynchus mykiss. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2013; 36:964-971. [PMID: 24055672 DOI: 10.1016/j.etap.2013.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 08/14/2013] [Accepted: 08/18/2013] [Indexed: 06/02/2023]
Abstract
The objective of this experiment was to test effects of different dietary lipids in rainbow trout feeding on the activity and expression of antioxidant enzymes, superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione S-transferase (GST). Four iso-nitrogenous and iso-lipidic casein-gelatin based experimental diets were formulated. The sources of dietary lipids were cod liver oil (CO, rich in polyunsaturated fatty acids), goose fat (GF, rich in saturated fatty acids and monounsaturated fatty acids), soybean oil (SO, rich in linoleic acid), and a blend of CO, GF and SO. Dietary treatments had no significant effect on growth performance and survival was not affected. SOD, GPx and GST enzymes had the maximum activity in GF diet. However qPCR data showed that SOD and GPx mRNA levels were minimum in GF group. Overall data showed that rainbow trout liver enzymes were activated upon GF diet probably activating the enzyme structure itself without stimulating gene expression.
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Affiliation(s)
- Levent Mercan
- Ondokuz Mayis University, Faculty of Agriculture, Department of Agricultural Biotechnology, 55139 Samsun, Turkey.
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