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Coanda M, Limban C, Draghici C, Ciobanu AM, Grigore GA, Popa M, Stan M, Larion C, Avram S, Mares C, Ciornei MC, Dabu A, Hudita A, Galateanu B, Pintilie L, Nuta DC. Current Perspectives on Biological Screening of Newly Synthetised Sulfanilamide Schiff Bases as Promising Antibacterial and Antibiofilm Agents. Pharmaceuticals (Basel) 2024; 17:405. [PMID: 38675368 PMCID: PMC11053482 DOI: 10.3390/ph17040405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/08/2024] [Accepted: 03/19/2024] [Indexed: 04/28/2024] Open
Abstract
Growing resistance to antimicrobials, combined with pathogens that form biofilms, presents significant challenges in healthcare. Modifying current antimicrobial agents is an economical approach to developing novel molecules that could exhibit biological activity. Thus, five sulfanilamide Schiff bases were synthesized under microwave irradiation and characterized spectroscopically and in silico. They were evaluated for their antimicrobial and antibiofilm activities against both Gram-positive and Gram-negative bacterial strains. Their cytotoxic potential against two cancer cell lines was also determined. Gram-positive bacteria were susceptible to the action of these compounds. Derivatives 1b and 1d inhibited S. aureus's growth (MIC from 0.014 mg/mL) and biofilm (IC from 0.029 mg/mL), while compound 1e was active against E. faecalis's planktonic and sessile forms. Two compounds significantly reduced cell viability at 5 μg/mL after 24 h of exposure (1d-HT-29 colorectal adenocarcinoma cells, 1c-LN229 glioblastoma cells). A docking study revealed the increased binding affinities of these derivatives compared to sulfanilamide. Hence, these Schiff bases exhibited higher activity compared to their parent drug, with halogen groups playing a crucial role in both their antimicrobial and cytotoxic effects.
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Affiliation(s)
- Maria Coanda
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str., 020950 Bucharest, Romania; (M.C.); (D.C.N.)
| | - Carmen Limban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str., 020950 Bucharest, Romania; (M.C.); (D.C.N.)
| | - Constantin Draghici
- Costin D. Nenitzescu Institute of Organic and Supramolecular Chemistry, 202 B Splaiul Independentei, 060023 Bucharest, Romania;
| | - Anne-Marie Ciobanu
- Department of Drug Control, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str., 020950 Bucharest, Romania;
| | - Georgiana Alexandra Grigore
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
- National Institute Research and Development for Biological Sciences, Splaiul Independenței 296, 060031 Bucharest, Romania
| | - Marcela Popa
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
| | - Miruna Stan
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
| | - Cristina Larion
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
| | - Speranta Avram
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, Splaiul Independentei 91-95, 050095 Bucharest, Romania; (S.A.); (C.M.)
| | - Catalina Mares
- Department of Anatomy, Animal Physiology and Biophysics, Faculty of Biology, University of Bucharest, Splaiul Independentei 91-95, 050095 Bucharest, Romania; (S.A.); (C.M.)
| | - Mariana-Catalina Ciornei
- Physiology Department, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania;
| | - Aura Dabu
- Neurosurgery Department 1, The University Emergency Hospital of Bucharest, Splaiul Independenței 169, 050098 Bucharest, Romania;
| | - Ariana Hudita
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
| | - Bianca Galateanu
- Faculty of Biology, University of Bucharest, Splaiul Independenței 91-95, 050095 Bucharest, Romania; (G.A.G.); (M.P.); (M.S.)
- Research Institute of the University of Bucharest (ICUB), University of Bucharest, Șoseaua Panduri 90, 050663 Bucharest, Romania; (C.L.); (A.H.); (B.G.)
| | - Lucia Pintilie
- National Institute for Chemical-Pharmaceutical Research and Development, 112 Vitan Av., 031299 Bucharest, Romania;
| | - Diana Camelia Nuta
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Str., 020950 Bucharest, Romania; (M.C.); (D.C.N.)
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2
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Supuran CT. A simple yet multifaceted 90 years old, evergreen enzyme: Carbonic anhydrase, its inhibition and activation. Bioorg Med Chem Lett 2023; 93:129411. [PMID: 37507055 DOI: 10.1016/j.bmcl.2023.129411] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023]
Abstract
Advances in the carbonic anhydrase (CA, EC 4.2.1.1) research over the last three decades are presented, with an emphasis on the deciphering of the activation mechanism, the development of isoform-selective inhibitors/ activators by the tail approach and their applications in the management of obesity, hypoxic tumors, neurological conditions, and as antiinfectives.
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Affiliation(s)
- Claudiu T Supuran
- Neurofarba Department, University of Florence, Section of Pharmaceutical Sciences, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy.
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3
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Ma X, Chen L, Yin L, Li Y, Yang X, Yang Z, Li G, Shan H. Risk Analysis of 24 Residual Antibiotics in Poultry Eggs in Shandong, China (2018–2020). Vet Sci 2022; 9:vetsci9030126. [PMID: 35324854 PMCID: PMC8953159 DOI: 10.3390/vetsci9030126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 12/10/2022] Open
Abstract
Although antibiotics have played a certain positive role in the prevention and treatment of poultry diseases, as well as the promotion of poultry growth, some farmers use antibiotics in an incorrect way in the breeding process, resulting in antibiotic residues in poultry tissues, organs and edible products. Residual antibiotics enter the human body through the food chain and accumulate, which not only causes poisoning and allergic reactions, but also drug resistance of pathogenic microorganisms, thus endangering the health of consumers. In this investigation, the residues of 24 antibiotics, including fluoroquinolones, sulfonamides, macrolides, tetracyclines, antivirals, lincomycin and florfenicol, were analyzed in 1211 poultry egg samples in Shandong, China, from 2018 to 2020. Then, based on the per capita intake of poultry eggs recommended in the dietary guidelines of Chinese residents, the maximum residue limit of veterinary drugs specified in Chinese regulations and the average weight of males and females aged 18 and over in 2020, the risk of residual antibiotics was evaluated by International Food Safety indices (IFS). The detection results showed that 104 of 1211 samples were detected with antibiotic residues, with a detection rate of 8.58%. Among them, the main residues were enrofloxacin, sulfonamides and florfenicol. The IFS calculation results showed that the IFS of residual antibiotics ranged from 1.44 × 10−7 to 0.102. Therefore, although enrofloxacin, sarafloxacin, danofloxacin, sulfonamides, tilmicosin, doxycycline, florfenicol, which are banned during egg laying, were detected in poultry eggs in Shandong, these residues did not pose a threat to the health of Chinese adult consumers, according to the daily dietary habits of Chinese people. However, it is strongly suggested that Shandong should strengthen the monitoring of antibiotic use during egg laying.
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Affiliation(s)
- Xiaoyu Ma
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China
- Correspondence: (X.M.); (H.S.)
| | - Ling Chen
- Shandong Center for Quality Control of Feed and Veterinary Drugs, Jinan 250010, China; (L.C.); (L.Y.); (Y.L.)
| | - Lingling Yin
- Shandong Center for Quality Control of Feed and Veterinary Drugs, Jinan 250010, China; (L.C.); (L.Y.); (Y.L.)
| | - Youzhi Li
- Shandong Center for Quality Control of Feed and Veterinary Drugs, Jinan 250010, China; (L.C.); (L.Y.); (Y.L.)
| | - Xiuzhen Yang
- Shandong Provincial Center for Quality and Safety of Animal Products, Jinan 250010, China; (X.Y.); (Z.Y.); (G.L.)
| | - Zhiguo Yang
- Shandong Provincial Center for Quality and Safety of Animal Products, Jinan 250010, China; (X.Y.); (Z.Y.); (G.L.)
| | - Guihua Li
- Shandong Provincial Center for Quality and Safety of Animal Products, Jinan 250010, China; (X.Y.); (Z.Y.); (G.L.)
| | - Hu Shan
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China
- Correspondence: (X.M.); (H.S.)
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4
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A Cardioplegic Solution with an Understanding of a Cardiochannelopathy. Antioxidants (Basel) 2021; 10:antiox10121878. [PMID: 34942981 PMCID: PMC8698488 DOI: 10.3390/antiox10121878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 11/16/2021] [Accepted: 11/23/2021] [Indexed: 01/11/2023] Open
Abstract
Cardiac surgeries have been improved by accompanying developing cardioplegia solutions. However, the cardioplegia application presents an ongoing challenge with a view of a sufficiently restored cardiac function. In this review, we focus on the cardioplegia-induced mechanism and summarize the findings of studies undertaken to improve cardioprotective strategies. Currently, and somewhat surprisingly, relatively little is known about cardiac electrolyte regulation through channel physiology. We hope that an improved understanding of the electrolyte transport through ion channels/transporters and modulations of water channel aquaporins will provide an insight into cardiac channel physiology and a channel-based cardiac pathology of a cardiochannelopathy.
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5
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Angeli A, Urbański LJ, Hytönen VP, Parkkila S, Supuran CT. Activation of the β-carbonic anhydrase from the protozoan pathogen Trichomonas vaginalis with amines and amino acids. J Enzyme Inhib Med Chem 2021; 36:758-763. [PMID: 33715570 PMCID: PMC7952076 DOI: 10.1080/14756366.2021.1897802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
We report the first activation study of the β-class carbonic anhydrase (CA, EC 4.2.1.1) encoded in the genome of the protozoan pathogen Trichomonas vaginalis, TvaCA1. Among 24 amino acid and amine activators investigated, derivatives incorporating a second carboxylic moiety, such as L-Asp, L- and D-Glu, were devoid of activating effects up to concentrations of 50 µM within the assay system, whereas the corresponding compounds with a CONH2 moiety, i.e. L-Gln and L-Asn showed modest activating effects, with activation constants in the range of 26.9 − 32.5 µM. Moderate activation was observed with L- and D-DOPA, histamine, dopamine, serotonin, (2-Aminoethyl)pyridine/piperazine and morpholine (KA‘s ranging between 8.3 and 14.5 µM), while the best activators were L-and D-Trp, L-and D-Tyr and 4-amino-Phe, which showed KA‘s ranging between 3.0 and 5.1 µM. Understanding in detail the activation mechanism of β-CAs may be relevant for the design of enzyme activity modulators with potential clinical significance.
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Affiliation(s)
- Andrea Angeli
- Neurofarba Department, Sezione di Chimica Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Firenze, Italy
| | - Linda J Urbański
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Vesa P Hytönen
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Fimlab Ltd, Tampere, Finland
| | - Seppo Parkkila
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.,Fimlab Ltd, Tampere, Finland
| | - Claudiu T Supuran
- Neurofarba Department, Sezione di Chimica Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Firenze, Italy
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6
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Berrino E, Supuran CT. Novel approaches for designing drugs that interfere with pH regulation. Expert Opin Drug Discov 2019; 14:231-248. [PMID: 30681011 DOI: 10.1080/17460441.2019.1567488] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION In all living species, pH regulation is a tightly controlled process, with a plethora of proteins involved in its regulation. These include sodium-proton exchangers, carbonic anhydrases, anion exchangers, bicarbonate transporters/cotransporters, H+-ATPases, and monocarboxylate transporters. All of them play crucial roles in acid-base balancing, both in eukaryotic as well as in prokaryotic organisms, making them interesting drug targets for the management of pathological events (in)directly involved in pH regulation. Areas covered: Interfering with pH regulation for the treatment of tumors and microbial infections is the main focus of this review, with particular attention paid to inhibitors targeting the above-mentioned proteins. The latest advances in each field id reviewed. Expert opinion: Interfering with the pH regulation of tumor cells is a validated approach to tackle primary tumors and metastases growth. Carbonic anhydrases are the most investigated proteins of those aforementioned, with several inhibitors in clinical development. Recent advances in the characterization of proteins involved in pH homeostasis of various pathogens evidenced their crucial role in the survival and virulence of bacterial, fungal, and protozoan microorganisms. Some encouraging results shed light on the possibility to target such proteins for obtaining new anti-infectives, overcoming the extensive drug resistance problems of clinically used drugs.
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Affiliation(s)
- Emanuela Berrino
- a NEUROFARBA Department, Sezione di Scienze Farmaceutiche , University of Florence , Sesto Fiorentino (Florence) , Italy
| | - Claudiu T Supuran
- a NEUROFARBA Department, Sezione di Scienze Farmaceutiche , University of Florence , Sesto Fiorentino (Florence) , Italy
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7
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Angeli A, Del Prete S, Alasmary FAS, Alqahtani LS, AlOthman Z, Donald WA, Capasso C, Supuran CT. The first activation studies of the η-carbonic anhydrase from the malaria parasite Plasmodium falciparum with amines and amino acids. Bioorg Chem 2018; 80:94-98. [PMID: 29894892 DOI: 10.1016/j.bioorg.2018.06.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/30/2018] [Accepted: 06/01/2018] [Indexed: 02/06/2023]
Abstract
The first activation study of a η-class carbonic anhydrase (CAs, EC 4.2.1.1) is reported. A panel of 24 natural and non-natural amino acids and amines was used to explore the activation profile of Plasmodium falciparum CA (PfACA). The most effective activators belonged to the amino acid chemotype, with d-Glu, l-Asp, l-/d-Phe and l-/d-DOPA possessing activation constant in the range of 82 nM-0.75 µM, whereas l-/d-His, l-Tyr, 4-amino-l-Phe and l-Gln were slightly less effective (KA in the range of 1.00-2.51 µM. The only amine with submicromolar activating properties was 1-(2-aminoethyl-piperazine) with a KA of 0.71 µM, whereas histamine, dopamine and serotonin showed KA ranging between 7.18 and 9.97 µM. As CA activators have scarcely been investigated for their interaction with protozoan CAs, this study may be relevant for an improved understanding of the role of this enzyme in the life cycle of the malaria producing organisms belonging to the genus Plasmodium.
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Affiliation(s)
- Andrea Angeli
- Università degli Studi di Firenze, Dipartimento Neurofarba, Sezione di Scienze Farmaceutiche e Nutraceutiche, Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Sonia Del Prete
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, 80131 Napoli, Italy
| | - Fatmah A S Alasmary
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Linah S Alqahtani
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; Department of Chemistry, King Faisal University, Alahsa, Saudi Arabia
| | - Zeid AlOthman
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - William A Donald
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Clemente Capasso
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, 80131 Napoli, Italy.
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Dipartimento Neurofarba, Sezione di Scienze Farmaceutiche e Nutraceutiche, Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy; Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia.
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Vullo D, Syrjänen L, Kuuslahti M, Parkkila S, Supuran CT. Anion inhibition studies of a beta carbonic anhydrase from the malaria mosquito Anopheles gambiae. J Enzyme Inhib Med Chem 2018; 33:359-363. [PMID: 29322852 PMCID: PMC6009871 DOI: 10.1080/14756366.2017.1421182] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
An anion inhibition study of the β-class carbonic anhydrase, AgaCA, from the malaria mosquito Anopheles gambiae is reported. A series of simple as well as complex inorganic anions, and small molecules known to interact with CAs were included in the study. Bromide, iodide, bisulphite, perchlorate, perrhenate, perruthenate, and peroxydisulphate were ineffective AgaCA inhibitors, with KIs > 200 mM. Fluoride, chloride, cyanate, thiocyanate, cyanide, bicarbonate, carbonate, nitrite, nitrate, sulphate, stannate, selenate, tellurate, diphosphate, divanadate, tetraborate, selenocyanide, and trithiocarbonate showed KIs in the range of 1.80–9.46 mM, whereas N,N-diethyldithiocarbamate was a submillimolar AgaCA inhibitor (KI of 0.65 mM). The most effective AgaCA inhibitors were sulphamide, sulphamic acid, phenylboronic acid and phenylarsonic acid, with inhibition constants in the range of 21–84 µM. The control of insect vectors responsible of the transmission of many protozoan diseases is rather difficult nowadays, and finding agents which can interfere with these processes, as the enzyme inhibitors investigated here, may arrest the spread of these diseases worldwide.
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Affiliation(s)
- Daniela Vullo
- a Dipartimento di Chimica, Laboratorio di Chimica Bioinorganica , Università degli Studi di Firenze , Sesto Fiorentino (Firenze) , Italy
| | - Leo Syrjänen
- b Faculty of Medicine and Life Sciences , University of Tampere , Tampere , Finland.,c Fimlab Laboratories Ltd , Tampere , Finland
| | | | - Seppo Parkkila
- b Faculty of Medicine and Life Sciences , University of Tampere , Tampere , Finland.,c Fimlab Laboratories Ltd , Tampere , Finland
| | - Claudiu T Supuran
- d Neurofarba Dipartment, Sezione di Scienza Farmaceutiche e Nutraceutiche , Università degli Studi di Firenze , Sesto Fiorentino (Firenze) , Italy
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9
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Karioti A, Carta F, Supuran CT. Phenols and Polyphenols as Carbonic Anhydrase Inhibitors. Molecules 2016; 21:molecules21121649. [PMID: 27918439 PMCID: PMC6273245 DOI: 10.3390/molecules21121649] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Revised: 11/26/2016] [Accepted: 11/28/2016] [Indexed: 01/26/2023] Open
Abstract
Phenols are among the largest and most widely distributed groups of secondary metabolites within the plant kingdom. They are implicated in multiple and essential physiological functions. In humans they play an important role as microconstituents of the daily diet, their consumption being considered healthy. The physical and chemical properties of phenolic compounds make these molecules versatile ligands, capable of interacting with a wide range of targets, such as the Carbonic Anhydrases (CAs, EC 4.2.1.1). CAs reversibly catalyze the fundamental reaction of CO2 hydration to bicarbonate and protons in all living organisms, being actively involved in the regulation of a plethora of patho/physiological processes. This review will discuss the most recent advances in the search of naturally occurring phenols and their synthetic derivatives that inhibit the CAs and their mechanisms of action at molecular level. Plant extracts or mixtures are not considered in the present review.
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Affiliation(s)
- Anastasia Karioti
- Laboratory of Pharmacognosy, School of Pharmacy, Aristotle University of Thessaloniki, University Campus, Thessaloniki 54124, Greece.
| | - Fabrizio Carta
- Neurofarba Department, Sezione di Chimica Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Via U. Schiff 6, I-50019 Sesto Fiorentino (Firenze), Italy.
| | - Claudiu T Supuran
- Neurofarba Department, Sezione di Chimica Farmaceutica e Nutraceutica, Università degli Studi di Firenze, Via U. Schiff 6, I-50019 Sesto Fiorentino (Firenze), Italy.
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Del Prete S, De Luca V, De Simone G, Supuran CT, Capasso C. Cloning, expression and purification of the complete domain of the η-carbonic anhydrase from Plasmodium falciparum. J Enzyme Inhib Med Chem 2016; 31:54-59. [PMID: 27615265 DOI: 10.1080/14756366.2016.1217856] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
The antimalarial drugs are of fundamental importance in the control of malaria, especially for the lack of efficient treatments and acquired resistance to the existing drugs. For this reason, there is a continuous work in identifying novel, less toxic and effective chemotherapies as well as new therapeutic targets against the causative agents of malaria. In this context, a superfamily of metalloenzymes named carbonic anhydrases (CAs, EC 4.2.1.1) has aroused a great interest as druggable enzymes to limit the development of Plasmodium falciparum gametocytes. CAs catalyze a common reaction in all life domains, the carbon dioxide hydration to bicarbonate and protons (CO2 + H2O ⇔ HCO3- + H+). P. falciparum synthesizes pyrimidines de novo starting from HCO3-, which is generated from CO2 through the action of the η-CA identified in the genome of the protozoan. Here, we propose a procedure for the preparation of a wider portion of the protozoan η-CA, named PfCAdom (358 amino acid residues), with respect to the truncated form prepared by Krungkrai et al. (PfCA1, 235 amino acid residues). The results evidenced that the recombinant PfCAdom, produced as a His-tag fusion protein, was 2.7 times more active with respect the truncated form PfCA1.
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Affiliation(s)
- Sonia Del Prete
- a Istituto di Bioscienze e Biorisorse, CNR , Napoli , Italy.,b Istituto di Biostrutture e Bioimmagini, CNR , Napoli , Italy , and
| | | | | | - Claudiu T Supuran
- c Dipartimento Neurofarba, Sezione di Scienze Farmaceutiche, and Laboratorio di Chimica Bioinorganica, Università degli Studi di Firenze , Florence , Italy
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Cloning, expression, purification and sulfonamide inhibition profile of the complete domain of the η-carbonic anhydrase from Plasmodium falciparum. Bioorg Med Chem Lett 2016; 26:4184-90. [PMID: 27485387 DOI: 10.1016/j.bmcl.2016.07.060] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/25/2016] [Accepted: 07/26/2016] [Indexed: 12/18/2022]
Abstract
We report the cloning, purification and characterization of the full domain of carbonic anhydrase (CA, EC 4.2.1.1) from Plasmodium falciparum, which incorporates 358 amino acid residues (from 181 to 538, in the sequence of this 600 amino acid long protein), called PfCAdom. The enzyme, which belongs to the η-CA class showed the following kinetic parameters: kcat of 3.8×10(5)s(-1) and kcat/Km of 7.2×10(7)M(-1)×s(-1), being 13.3 times more effective as a catalyst compared to the truncated form PfCA. PfCAdom is more effective than the human (h) isoform hCA I, being around 50% less effective compared to hCA II, one of the most catalytically efficient enzymes known so far. Intriguingly, the sulfonamides CA inhibitors generally showed much weaker inhibitory activity against PfCAdom compared to PfCA, prompting us to hypothesize that the 69 amino acid residues insertion present in the active site of this η-CA is crucial for the active site architecture. The best sulfonamide inhibitors for PfCAdom were acetazolamide, methazolamide, metanilamide and sulfanilamide, with KIs in the range of 366-808nM.
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12
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Del Prete S, Vullo D, De Luca V, Carginale V, di Fonzo P, Osman SM, AlOthman Z, Supuran CT, Capasso C. Anion inhibition profiles of the complete domain of the η-carbonic anhydrase from Plasmodium falciparum. Bioorg Med Chem 2016; 24:4410-4414. [PMID: 27480028 DOI: 10.1016/j.bmc.2016.07.034] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 07/16/2016] [Indexed: 01/08/2023]
Abstract
We have cloned, purified and investigated the catalytic activity and anion inhibition profiles of a full catalytic domain (358 amino acid residues) carbonic anhydrase (CA, EC 4.2.1.1) from Plasmodium falciparum, PfCAdom, an enzyme belonging to the η-CA class and identified in the genome of the malaria-producing protozoa. A truncated such enzyme, PfCA1, containing 235 residues was investigated earlier for its catalytic and inhibition profiles. The two enzymes were efficient catalysts for CO2 hydration: PfCAdom showed a kcat of 3.8×10(5)s(-1) and kcat/Km of 7.2×10(7)M(-1)×s(-1), whereas PfCA showed a lower activity compared to PfCAdom, with a kcat of 1.4×10(5)s(-1) and kcat/Km of 5.4×10(6)M(-1)×s(-1). PfCAdom was generally less inhibited by most anions and small molecules compared to PfCA1. The best PfCAdom inhibitors were sulfamide, sulfamic acid, phenylboronic acid and phenylarsonic acid, which showed KIs in the range of 9-68μM, followed by bicarbonate, hydrogensulfide, stannate and N,N-diethyldithiocarbamate, which were submillimolar inhibitors, with KIs in the range of 0.53-0.97mM. Malaria parasites CA inhibition was proposed as a new strategy to develop antimalarial drugs, with a novel mechanism of action.
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Affiliation(s)
- Sonia Del Prete
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, Napoli, Italy; Università degli Studi di Firenze, Dipartimento Di Chimica, Laboratorio di Chimica Bioinorganica, Polo Scientifico, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - Daniela Vullo
- Università degli Studi di Firenze, Dipartimento Di Chimica, Laboratorio di Chimica Bioinorganica, Polo Scientifico, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - Viviana De Luca
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, Napoli, Italy
| | - Vincenzo Carginale
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, Napoli, Italy
| | - Pietro di Fonzo
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, Napoli, Italy
| | - Sameh M Osman
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Zeid AlOthman
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Claudiu T Supuran
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; Università degli Studi di Firenze, Dipartimento Neurofarba, Sezione di ScienzeFarmaceutiche e Nutraceutiche, Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy.
| | - Clemente Capasso
- Istituto di Bioscienze e Biorisorse, CNR, Via Pietro Castellino 111, Napoli, Italy.
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Krungkrai SR, Krungkrai J. Insights into the pyrimidine biosynthetic pathway of human malaria parasite Plasmodium falciparum as chemotherapeutic target. ASIAN PAC J TROP MED 2016; 9:525-34. [PMID: 27262062 DOI: 10.1016/j.apjtm.2016.04.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/16/2016] [Accepted: 04/08/2016] [Indexed: 11/25/2022] Open
Abstract
Malaria is a major cause of morbidity and mortality in humans. Artemisinins remain as the first-line treatment for Plasmodium falciparum (P. falciparum) malaria although drug resistance has already emerged and spread in Southeast Asia. Thus, to fight this disease, there is an urgent need to develop new antimalarial drugs for malaria chemotherapy. Unlike human host cells, P. falciparum cannot salvage preformed pyrimidine bases or nucleosides from the extracellular environment and relies solely on nucleotides synthesized through the de novo biosynthetic pathway. This review presents significant progress on understanding the de novo pyrimidine pathway and the functional enzymes in the human parasite P. falciparum. Current knowledge in genomics and metabolomics are described, particularly focusing on the parasite purine and pyrimidine nucleotide metabolism. These include gene annotation, characterization and molecular mechanism of the enzymes that are different from the human host pathway. Recent elucidation of the three-dimensional crystal structures and the catalytic reactions of three enzymes: dihydroorotate dehydrogenase, orotate phosphoribosyltransferase, and orotidine 5'-monophosphate decarboxylase, as well as their inhibitors are reviewed in the context of their therapeutic potential against malaria.
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Affiliation(s)
- Sudaratana R Krungkrai
- Unit of Biochemistry, Department of Medical Science, Faculty of Science, Rangsit University, Pathumthani 12000, Thailand
| | - Jerapan Krungkrai
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand.
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Syrjänen L, Kuuslahti M, Tolvanen M, Vullo D, Parkkila S, Supuran CT. The β-carbonic anhydrase from the malaria mosquito Anopheles gambiae is highly inhibited by sulfonamides. Bioorg Med Chem 2015; 23:2303-9. [DOI: 10.1016/j.bmc.2015.03.081] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 03/30/2015] [Accepted: 03/31/2015] [Indexed: 12/22/2022]
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Malaria parasite carbonic anhydrase: inhibition of aromatic/heterocyclic sulfonamides and its therapeutic potential. Asian Pac J Trop Biomed 2015; 1:233-42. [PMID: 23569766 DOI: 10.1016/s2221-1691(11)60034-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 02/16/2011] [Accepted: 03/13/2011] [Indexed: 11/20/2022] Open
Abstract
Plasmodium falciparum (P. falciparum) is responsible for the majority of life-threatening cases of human malaria, causing 1.5-2.7 million annual deaths. The global emergence of drug-resistant malaria parasites necessitates identification and characterization of novel drug targets and their potential inhibitors. We identified the carbonic anhydrase (CA) genes in P. falciparum. The pfCA gene encodes anα-carbonic anhydrase, a Zn(2+)-metalloenzme, possessing catalytic properties distinct from that of the human host CA enzyme. The amino acid sequence of the pfCA enzyme is different from the analogous protozoan and human enzymes. A library of aromatic/heterocyclic sulfonamides possessing a large diversity of scaffolds were found to be very good inhibitors for the malarial enzyme at moderate-low micromolar and submicromolar inhibitions. The structure of the groups substituting the aromatic-ureido- or aromatic-azomethine fragment of the molecule and the length of the parent sulfonamide were critical parameters for the inhibitory properties of the sulfonamides. One derivative, that is, 4- (3, 4-dichlorophenylureido)thioureido-benzenesulfonamide (compound 10) was the most effective in vitro Plasmodium falciparum CA inhibitor, and was also the most effective antimalarial compound on the in vitro P. falciparum growth inhibition. The compound 10 was also effective in vivo antimalarial agent in mice infected with Plasmodium berghei, an animal model of drug testing for human malaria infection. It is therefore concluded that the sulphonamide inhibitors targeting the parasite CA may have potential for the development of novel therapies against human malaria.
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De Simone G, Di Fiore A, Capasso C, Supuran CT. The zinc coordination pattern in the η-carbonic anhydrase from Plasmodium falciparum is different from all other carbonic anhydrase genetic families. Bioorg Med Chem Lett 2015; 25:1385-9. [PMID: 25765908 DOI: 10.1016/j.bmcl.2015.02.046] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 02/19/2015] [Accepted: 02/22/2015] [Indexed: 12/19/2022]
Abstract
In this Letter we reinvestigate the sequence analysis and report a homology model of the carbonic anhydrase (CA, EC 4.2.1.1) from the protozoan parasite Plasmodium falciparum, recently reported by us to belong to a new genetic family, the η-CA class. Our findings show that the metal ion coordination pattern of this CA is unique among all five other genetic families encoding for such enzymes, comprising two His and one Gln residues, in addition to the water molecule/hydroxide ion acting as nucleophile in the catalytic cycle. Although the η- and α-CAs present the same 3D fold, strongly suggesting the first ones to be evolutionary derived from the last, there are significant differences between the two families to allow optimism for the drug design of selective inhibitors for the parasite over the host enzymes. The preliminary studies reported here are relevant for drug design campaigns of anti-plasmodium CA inhibitors but further work by X-ray crystallography should validate the proposed model.
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Affiliation(s)
- Giuseppina De Simone
- Istituto di Biostrutture e Bioimmagini-CNR, via Mezzocannone 16, 80134 Napoli, Italy
| | - Anna Di Fiore
- Istituto di Biostrutture e Bioimmagini-CNR, via Mezzocannone 16, 80134 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 Neurofarba, Sezione di Scienze Farmaceutiche, and Laboratorio di Chimica Bioinorganica, Polo Scientifico, Via U. Schiff 6, 50019 Sesto Fiorentino, Florence, Italy.
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17
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Ghiasi M, Kamalinahad S, Zahedi M. Complexation of nanoscale enzyme inhibitor with carbonic anhydrase active center: A quantum mechanical approach. J STRUCT CHEM+ 2015. [DOI: 10.1134/s0022476614080277] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Dawn A, Singh S, More KR, Siddiqui FA, Pachikara N, Ramdani G, Langsley G, Chitnis CE. The central role of cAMP in regulating Plasmodium falciparum merozoite invasion of human erythrocytes. PLoS Pathog 2014; 10:e1004520. [PMID: 25522250 PMCID: PMC4270784 DOI: 10.1371/journal.ppat.1004520] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 10/15/2014] [Indexed: 12/19/2022] Open
Abstract
All pathogenesis and death associated with Plasmodium falciparum malaria is due to parasite-infected erythrocytes. Invasion of erythrocytes by P. falciparum merozoites requires specific interactions between host receptors and parasite ligands that are localized in apical organelles called micronemes. Here, we identify cAMP as a key regulator that triggers the timely secretion of microneme proteins enabling receptor-engagement and invasion. We demonstrate that exposure of merozoites to a low K+ environment, typical of blood plasma, activates a bicarbonate-sensitive cytoplasmic adenylyl cyclase to raise cytosolic cAMP levels and activate protein kinase A, which regulates microneme secretion. We also show that cAMP regulates merozoite cytosolic Ca2+ levels via induction of an Epac pathway and demonstrate that increases in both cAMP and Ca2+ are essential to trigger microneme secretion. Our identification of the different elements in cAMP-dependent signaling pathways that regulate microneme secretion during invasion provides novel targets to inhibit blood stage parasite growth and prevent malaria. The blood stage of malaria parasites is responsible for all the morbidity and mortality associated with malaria. During the blood stage, malaria parasites invade and multiply within host erythrocytes. The process of erythrocyte invasion requires specific interactions between host receptors and parasite ligands. Many of the key parasite proteins that bind host receptors are localized in apical organelles called micronemes. Here, we demonstrate that cAMP serves as a key regulator that controls the timely secretion of microneme proteins during invasion. We show that exposure of merozoites to a low K+ environment, as found in blood plasma, leads to a rise in cytosolic cAMP levels due to activation of the cytoplasmic, bicarbonate-sensitive adenylyl cyclase β (PfACβ). A rise in cAMP activates protein kinase A (PKA), which regulates microneme secretion. In addition, cAMP triggers a rise in cytosolic Ca2+ levels through the Epac pathway. Increases in both cAMP and Ca2+ levels are essential for triggering microneme secretion. Identification of the different elements in the cAMP-dependent signaling pathways that regulate microneme secretion during invasion provides novel targets to block erythrocyte invasion, inhibit blood stage parasite growth and prevent malaria.
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Affiliation(s)
- Amrita Dawn
- Malaria Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Shailja Singh
- Malaria Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
- Malaria Parasite Biology and Vaccines Unit, Department of Parasites and Insect Vectors, Institut Pasteur, Paris, France
| | - Kunal R. More
- Malaria Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Faiza Amber Siddiqui
- Malaria Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Niseema Pachikara
- Malaria Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Ghania Ramdani
- Laboratoire de Biologie Cellulaire Comparative des Apicomplexes, Institut Cochin, INSERM U1016, CNRS UMR 8104, Paris, France
| | - Gordon Langsley
- Laboratoire de Biologie Cellulaire Comparative des Apicomplexes, Institut Cochin, INSERM U1016, CNRS UMR 8104, Paris, France
| | - Chetan E. Chitnis
- Malaria Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
- Malaria Parasite Biology and Vaccines Unit, Department of Parasites and Insect Vectors, Institut Pasteur, Paris, France
- * E-mail:
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Supuran CT, Capasso C. The η-class carbonic anhydrases as drug targets for antimalarial agents. Expert Opin Ther Targets 2014; 19:551-63. [PMID: 25495426 DOI: 10.1517/14728222.2014.991312] [Citation(s) in RCA: 132] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION The η-class of carbonic anhydrases (CAs, EC 4.2.1.1) was recently discovered as the sixth genetic family of this metalloenzyme superfamily, and seems to be present only in various Plasmodium species, the malaria-provoking pathogens. The present review through detailed biochemical, kinetic and phylogenetic studies afford a clear view regarding the differences between η- and the other CA families. AREAS COVERED In this review, the authors underlined as the η-CAs, like α-, γ- and δ-class enzymes, have the Zn(II) ion coordinated by three histidine residues and a water molecule. They seem to be more closely related to the α-CAs, but there are notable differences between them, such as the lack of the proton shuttle residue (His64) and gatekeeper residues, Glu106 and Thr199 in the η-CAs, which are conserved in all α-CAs. EXPERT OPINION Plasmodium falciparum η-CA showed a moderate but significant activity for the CO2 hydration reaction, with a kcat of 1.4 × 10(5)s(-1) and a kcat/Km of 5.4 × 10(6) M(-1) × s(-1). Several inhibition studies with anions and sulfonamides/sulfamates, allowed the identification of interesting lead compounds. The discovery of η-CA-specific inhibitors may lead to novel such agents with a new mechanism of action.
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Affiliation(s)
- Claudiu T Supuran
- Università degli Studi di Firenze, Dipartmento di Chimica Ugo Schiff , Via della Lastruccia 3, Rm. 188, 50019 - Sesto Fiorentino (Florence) , Italy
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Vullo D, Del Prete S, Fisher GM, Andrews KT, Poulsen SA, Capasso C, Supuran CT. Sulfonamide inhibition studies of the η-class carbonic anhydrase from the malaria pathogen Plasmodium falciparum. Bioorg Med Chem 2014; 23:526-31. [PMID: 25533402 DOI: 10.1016/j.bmc.2014.12.009] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 12/01/2014] [Accepted: 12/04/2014] [Indexed: 12/12/2022]
Abstract
The η-carbonic anhydrases (CAs, EC 4.2.1.1) were recently discovered as the sixth genetic class of this metalloenzyme superfamily, and are so far known only in protozoa, including various Plasmodium species, the causative agents of malaria. We report here an inhibition study of the η-CA from Plasmodium falciparum (PfCA) against a panel of sulfonamides and one sulfamate compound, some of which are clinically used. The strongest inhibitors identified were ethoxzolamide and sulthiame, with KIs of 131-132 nM, followed by acetazolamide, methazolamide and hydrochlorothiazide (KIs of 153-198 nM). Brinzolamide, topiramate, zonisamide, indisulam, valdecoxib and celecoxib also showed significant inhibitory action against PfCA, with KIs ranging from 217 to 308 nM. An interesting observation was that the more efficient PfCA inhibitors are representative of several scaffolds and chemical classes, including benzene sulfonamides, monocyclic/bicyclic heterocyclic sulfonamides and compounds with a more complex scaffold (i.e., the sugar sulfamate derivative, topiramate, and the coxibs, celecoxib and valdecoxib). A comprehensive inhibition study of small molecules for η-CAs is needed as a first step towards assessing PfCA as a druggable target. The present work identifies the first known η-CA inhibitors and provides a platform for the development of next generation novel PfCA inhibitors.
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Affiliation(s)
- Daniela Vullo
- Università degli Studi di Firenze, Polo Scientifico, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy
| | - Sonia Del Prete
- Istituto di Bioscienze e Biorisorse (IBBR)-CNR, Via P. Castellino 111, 80131 Napoli, 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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21
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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: 253] [Impact Index Per Article: 25.3] [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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Sulfonamide inhibition studies of the β carbonic anhydrase from Drosophila melanogaster. Bioorg Med Chem Lett 2014; 24:2797-801. [DOI: 10.1016/j.bmcl.2014.04.117] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 04/28/2014] [Accepted: 04/29/2014] [Indexed: 12/13/2022]
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23
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Sulfonamide inhibition studies of the δ-carbonic anhydrase from the diatom Thalassiosira weissflogii. Bioorg Med Chem Lett 2014; 24:275-9. [DOI: 10.1016/j.bmcl.2013.11.021] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 11/10/2013] [Indexed: 01/07/2023]
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24
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Boone CD, Pinard M, McKenna R, Silverman D. Catalytic mechanism of α-class carbonic anhydrases: CO2 hydration and proton transfer. Subcell Biochem 2014; 75:31-52. [PMID: 24146373 DOI: 10.1007/978-94-007-7359-2_3] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The carbonic anhydrases (CAs; EC 4.2.1.1) are a family of metalloenzymes that catalyze the reversible hydration of carbon dioxide (CO2) and dehydration of bicarbonate (HCO3 (-)) in a two-step ping-pong mechanism: [Formula: see text] CAs are ubiquitous enzymes and are categorized into five distinct classes (α, β, γ, δ and ζ). The α-class is found primarily in vertebrates (and the only class of CA in mammals), β is observed in higher plants and some prokaryotes, γ is present only in archaebacteria whereas the δ and ζ classes have only been observed in diatoms.The focus of this chapter is on α-CAs as the structure-function relationship is best understood for this class, in particular for humans. The reader is referred to other reviews for an overview of the structure and catalytic mechanism of the other CA classes. The overall catalytic site structure and geometry of α-CAs are described in the first section of this chapter followed by the kinetic studies, binding of CO2, and the proton shuttle network.
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Affiliation(s)
- Christopher D Boone
- Department of Biochemistry and Molecular Biology, University of Florida, Gainesville, FL, USA,
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25
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Tobal JM, Balieiro MEDSF. Role of carbonic anhydrases in pathogenic micro-organisms: a focus on Aspergillus fumigatus. J Med Microbiol 2014; 63:15-27. [DOI: 10.1099/jmm.0.064444-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Aspergillus fumigatus is a ubiquitous saprophytic fungus responsible for organic material decomposition, and plays an important role in recycling environmental carbon and nitrogen. Besides its important role in the environment, this fungus has been reported as one of the most important fungal pathogens in immunocompromised patients. Due to changes in CO2 concentration that some pathogens face during the infection process, studies have been undertaken to understand the pathogenic roles of carbonic anhydrases (CAs), well-known CO2 hydration catalytic enzymes. As a basis for a discussion of the possible roles of CAs in A. fumigatus pathogenicity, this review describes the main characteristics of the A. fumigatus infection and the challenges for its treatment. In addition, it gathers findings from studies with CA inhibitor drugs as anti-infective agents in different pathogens.
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Affiliation(s)
- Jaqueline Moisés Tobal
- Faculty of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
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Vullo D, Del Prete S, Osman SM, De Luca V, Scozzafava A, Alothman Z, Supuran CT, Capasso C. Sulfonamide inhibition studies of the γ-carbonic anhydrase from the oral pathogen Porphyromonas gingivalis. Bioorg Med Chem Lett 2013; 24:240-4. [PMID: 24316122 DOI: 10.1016/j.bmcl.2013.11.030] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Revised: 11/11/2013] [Accepted: 11/13/2013] [Indexed: 12/11/2022]
Abstract
A carbonic anhydrase (CA, EC 4.2.1.1) denominated PgiCA, belonging to the γ-class, from the oral pathogenic bacteria Porphyromonas gingivalis, the main causative agent of periodontitis, was investigated for its inhibition profile with sulfonamides and one sulfamate. Dichlorophenamide, topiramate and many simple aromatic/heterocyclic sulfonamides were ineffective as PgiCA inhibitors whereas the best inhibition was observed with halogenosulfanilamides incorporating heavy halogens, 4-hydroxy- and 4-hydroxyalkyl-benzenesulfonamides, acetazolamide, methazolamide, zonisamide, indisulam, celecoxib, saccharin and hydrochlorothiazide (KIs in the range of 131-380nM). The inhibition profile of PgiCA was very different from that of CAM, hCA I and II or the β-CA from a protozoan parasite (Leishmania donovani chagasii). Identification of potent and possibly selective inhibitors of PgiCA may lead to pharmacological tools useful for understanding the physiological role(s) of this enzyme.
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Affiliation(s)
- Daniela Vullo
- Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino (Firenze), Italy
| | - Sonia Del Prete
- Istituto di Biochimica delle Proteine and Institute of Bioscience and Bioresources (IBBR), CNR, Via P. Castellino 111, 80131 Napoli, Italy
| | - Sameh M Osman
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - Viviana De Luca
- Istituto di Biochimica delle Proteine and Institute of Bioscience and Bioresources (IBBR), CNR, Via P. Castellino 111, 80131 Napoli, Italy
| | - Andrea Scozzafava
- Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino (Firenze), Italy
| | - Zeid Alothman
- Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino (Firenze), Italy; Department of Chemistry, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia; Università degli Studi di Firenze, Polo Scientifico, Dipartimento NEIROFABA, Sezione di Scienze Farmaceutiche e Nutraceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino (Firenze), Italy.
| | - Clemente Capasso
- Istituto di Biochimica delle Proteine and Institute of Bioscience and Bioresources (IBBR), CNR, Via P. Castellino 111, 80131 Napoli, Italy.
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Syrjänen L, Vermelho AB, Rodrigues IDA, Corte-Real S, Salonen T, Pan P, Vullo D, Parkkila S, Capasso C, Supuran CT. Cloning, characterization, and inhibition studies of a β-carbonic anhydrase from Leishmania donovani chagasi, the protozoan parasite responsible for leishmaniasis. J Med Chem 2013; 56:7372-81. [PMID: 23977960 DOI: 10.1021/jm400939k] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Leishmaniasis is an infection provoked by protozoans belonging to the genus Leishmania. Among the many species and subsepecies of such protozoa, Leishmania donovani chagasi causes visceral leishmaniasis. A β-carbonic anhydrase (CA, EC 4.2.1.1) was cloned and characterized from this organism, denominated here LdcCA. LdcCA possesses effective catalytic activity for the CO2 hydration reaction, with kcat of 9.35 × 10(5) s(-1) and kcat/KM of 5.9 × 10(7) M(-1) s(-1). A large number of aromatic/heterocyclic sulfonamides and 5-mercapto-1,3,4-thiadiazoles were investigated as LdcCA inhibitors. The sulfonamides were medium potency to weak inhibitors (KI values of 50.2 nM-9.25 μM), whereas some heterocyclic thiols inhibited the enzyme with KIs in the range of 13.4-152 nM. Some of the investigated thiols efficiently inhibited the in vivo growth of Leishmania chagasi and Leishmania amazonensis promastigotes, by impairing the flagellar pocket and movement of the parasites and causing their death. The β-CA from Leishmania spp. is proposed here as a new antileishmanial drug target.
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Affiliation(s)
- Leo Syrjänen
- Institute of Biomedical Technology and BioMediTech, University of Tampere , 33520 Tampere, Finland
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Del Prete S, De Luca V, Vullo D, Scozzafava A, Carginale V, Supuran CT, Capasso C. Biochemical characterization of the γ-carbonic anhydrase from the oral pathogen Porphyromonas gingivalis, PgiCA. J Enzyme Inhib Med Chem 2013; 29:532-7. [PMID: 23914926 DOI: 10.3109/14756366.2013.822371] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Carbonic anhydrases (CAs, EC 4.2.1.1) catalyze a simple but physiologically relevant reaction in all life kingdoms, carbon dioxide hydration to bicarbonate and protons. CAs are present in many pathogenic species and are involved in the bicarbonate metabolism/biosynthetic reactions involving this ion. Ubiquity of these enzymes suggests a pivotal role in microbial virulence and pathogenicity. Porphyromonas gingivalis is an anaerobic bacterium, which colonizes the oral cavity, being involved in the pathogenesis of periodontitis, an inflammatory disease leading to tooth loss. Recently, we reported an anion inhibitory study on the γ-CA (denominated PgiCA) identified in the genome of this Gram-negative bacterium. In this paper we continue our research on PgiCA, and describe the biochemical characterization of the recombinant protein, its thermal stability, the oligomeric state and the enzyme kinetics. PgiCA is a polypeptide chain formed of 192 amino acids and displays an identity of 30-33% when compared with the prototypical γ-CAs, CAM or CAMH (from Methanosarcina thermophila) or CcmM (from Thermosynechococcus elongatus). A subunit molecular mass of 21 kDa was estimated by SDS-PAGE, while HPLC size exclusion chromatography under native conditions gave an estimated molecular mass of 65 kDa suggesting that the recombinant enzyme self-associate in a homotrimer, as all other γ-CAs studied so far. Enzyme kinetic analysis showed that PgiCA is 62 times more effective as a catalyst compared to CAM, the only other γ-CA characterized in detail kinetically. All these features represent an interesting attractive for the drug design of inhibitors/activators of this new enzyme.
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Anion inhibition studies of the α-carbonic anhydrase from the protozoan pathogen Trypanosoma cruzi, the causative agent of Chagas disease. Bioorg Med Chem 2013; 21:4472-6. [DOI: 10.1016/j.bmc.2013.05.058] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 05/27/2013] [Accepted: 05/29/2013] [Indexed: 12/15/2022]
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Natural product hybrid and its superacid synthesized analogues: Dodoneine and its derivatives show selective inhibition of carbonic anhydrase isoforms I, III, XIII and XIV. Bioorg Med Chem 2013; 21:3790-4. [DOI: 10.1016/j.bmc.2013.04.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 04/05/2013] [Accepted: 04/10/2013] [Indexed: 01/04/2023]
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31
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Del Prete S, Vullo D, De Luca V, Carginale V, Scozzafava A, Supuran CT, Capasso C. A highly catalytically active γ-carbonic anhydrase from the pathogenic anaerobe Porphyromonas gingivalis and its inhibition profile with anions and small molecules. Bioorg Med Chem Lett 2013; 23:4067-71. [DOI: 10.1016/j.bmcl.2013.05.063] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 05/16/2013] [Accepted: 05/17/2013] [Indexed: 10/26/2022]
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Capasso C, Supuran CT. Sulfa and trimethoprim-like drugs – antimetabolites acting as carbonic anhydrase, dihydropteroate synthase and dihydrofolate reductase inhibitors. J Enzyme Inhib Med Chem 2013; 29:379-87. [DOI: 10.3109/14756366.2013.787422] [Citation(s) in RCA: 219] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Claudiu T. Supuran
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Firenze
Polo Scientifico, Sesto Fiorentino (Florence)Italy
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Capasso C, Supuran CT. Anti-infective carbonic anhydrase inhibitors: a patent and literature review. Expert Opin Ther Pat 2013; 23:693-704. [DOI: 10.1517/13543776.2013.778245] [Citation(s) in RCA: 187] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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34
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Pan P, Vermelho AB, Capaci Rodrigues G, Scozzafava A, Tolvanen MEE, Parkkila S, Capasso C, Supuran CT. Cloning, characterization, and sulfonamide and thiol inhibition studies of an α-carbonic anhydrase from Trypanosoma cruzi, the causative agent of Chagas disease. J Med Chem 2013; 56:1761-71. [PMID: 23391336 DOI: 10.1021/jm4000616] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An α-carbonic anhydrase (CA, EC 4.2.1.1) has been identified, cloned, and characterized from the unicellular protozoan Trypanosoma cruzi, the causative agent of Chagas disease. The enzyme (TcCA) has a very high catalytic activity for the CO2 hydration reaction, being similar kinetically to the human (h) isoform hCA II, although it is devoid of the His64 proton shuttle. A large number of aromatic/heterocyclic sulfonamides and some 5-mercapto-1,3,4-thiadiazoles were investigated as TcCA inhibitors. The aromatic sulfonamides were weak inhibitors (K(I) values of 192 nM to 84 μM), whereas some heterocyclic compounds inhibited the enzyme with K(I) values in the range 61.6-93.6 nM. The thiols were the most potent in vitro inhibitors (K(I) values of 21.1-79.0 nM), and some of them also inhibited the epimastigotes growth of two T. cruzi strains in vivo.
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Affiliation(s)
- Peiwen Pan
- Institute of Biomedical Technology, Fimlab Ltd., School of Medicine and BioMediTech, University of Tampere and Tampere University Hospital, Medisiinarinkatu 3, 33520 Tampere, Finland
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Métayer B, Mingot A, Vullo D, Supuran CT, Thibaudeau S. New superacid synthesized (fluorinated) tertiary benzenesulfonamides acting as selective hCA IX inhibitors: toward a new mode of carbonic anhydrase inhibition by sulfonamides. Chem Commun (Camb) 2013; 49:6015-7. [DOI: 10.1039/c3cc40858b] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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(In)organic anions as carbonic anhydrase inhibitors. J Inorg Biochem 2011; 111:117-29. [PMID: 22192857 DOI: 10.1016/j.jinorgbio.2011.11.017] [Citation(s) in RCA: 158] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2011] [Revised: 10/17/2011] [Accepted: 11/08/2011] [Indexed: 01/17/2023]
Abstract
Carbonic anhydrases (CAs, EC 4.2.1.1) are widespread enzymes in all life kingdoms with five distinct genetic families known to date, the α-, β-, γ-, δ- and ζ-CAs. With the exception of the δ-class, which is less investigated to date, enzymes from the remaining classes found in vertebrates, corals, fungi, bacteria and archaea have been studied for their inhibition with simple inorganic anions as well as more complex inorganic and organic ones. In this paper we review the available data for the inhibition of these enzymes with all anions except sulfonamides and their bioisosteres (sulfamates, sulfamides) which have been reviewed earlier. Anion inhibitors are important both for understanding the inhibition/catalytic mechanisms of these enzymes and for designing novel types of inhibitors which may have clinical applications for the management of a variety of disorders in which CAs are involved. Environmental aspects of CO(2) fixation by CAs present in plants, corals, algae or diatoms and how this may be affected by inhibitors are also discussed.
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Nishimori I, Minakuchi T, Vullo D, Scozzafava A, Supuran CT. Inhibition studies of the β-carbonic anhydrases from the bacterial pathogen Salmonella enterica serovar Typhimurium with sulfonamides and sulfamates. Bioorg Med Chem 2011; 19:5023-30. [DOI: 10.1016/j.bmc.2011.06.038] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 06/09/2011] [Accepted: 06/13/2011] [Indexed: 12/28/2022]
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Sahin H, Can Z, Yildiz O, Kolayli S, Innocenti A, Scozzafava G, Supuran CT. Inhibition of carbonic anhydrase isozymes I and II with natural products extracted from plants, mushrooms and honey. J Enzyme Inhib Med Chem 2011; 27:395-402. [PMID: 21740099 DOI: 10.3109/14756366.2011.593176] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Different natural products and secondary metabolites from mushrooms, teas, honeys, mosses, plants and seaweeds were investigated for their in vitro inhibitory effects on human carbonic anhydrase (hCA, E.C.4.2.1.1) isoforms I and II. Inhibition data were correlated with the total phenol content in the extract and investigated with the pure compounds believed to be responsible for this activity. Methanolic extracts were prepared for 17 such pure chemicals present in the natural products and for 41 diverse natural products. The IC(50) values were in the range of 0.11-66.50 μg/mL against hCA I and of 0.09-54.54 μg/mL against hCA II, respectively. The total phenol content was in the range of 0.02-1318.96 (as milligrams of gallic acid equivalents) per gram of sample. These data offer new insights on possible novel classes of CA inhibitors based on natural products, possessing a range of chemical structures not present in the classical inhibitors with pharmacological applications, such as the sulfonamides and sulfamates.
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Affiliation(s)
- Huseyin Sahin
- Karadeniz Technique University, Department of Chemistry, Trabzon, Turkey
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Supuran CT. Bacterial carbonic anhydrases as drug targets: toward novel antibiotics? Front Pharmacol 2011; 2:34. [PMID: 21779249 PMCID: PMC3132667 DOI: 10.3389/fphar.2011.00034] [Citation(s) in RCA: 192] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Accepted: 06/20/2011] [Indexed: 12/30/2022] Open
Abstract
Carbonic anhydrases (CAs, EC 4.2.1.1) are metalloenzymes which catalyze the hydration of carbon dioxide to bicarbonate and protons. Many pathogenic bacteria encode such enzymes belonging to the α-, β-, and/or γ-CA families. In the last decade, the α-CAs from Neisseria spp. and Helicobacter pylori as well as the β-class enzymes from Escherichia coli, H. pylori,Mycobacterium tuberculosis, Brucella spp., Streptococcus pneumoniae, Salmonella enterica, and Haemophilus influenzae have been cloned and characterized in detail. For some of these enzymes the X-ray crystal structures were determined, and in vitro and in vivo inhibition studies with various classes of inhibitors, such as anions, sulfonamides and sulfamates reported. Although efficient inhibitors have been reported for many such enzymes, only for Neisseria spp., H. pylori, B. suis, and S. pneumoniae enzymes it has been possible to evidence inhibition of bacterial growth in vivo. Thus, bacterial CAs represent promising targets for obtaining antibacterials devoid of the resistance problems of the clinically used such agents but further studies are needed to validate these and other less investigated enzymes as novel drug targets.
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Affiliation(s)
- Claudiu T Supuran
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Florence Florence, Italy
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Inhibition studies with anions and small molecules of two novel β-carbonic anhydrases from the bacterial pathogen Salmonella enterica serovar Typhimurium. Bioorg Med Chem Lett 2011; 21:3591-5. [DOI: 10.1016/j.bmcl.2011.04.105] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 04/22/2011] [Accepted: 04/22/2011] [Indexed: 01/24/2023]
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Sulfonamides incorporating boroxazolidone moieties are potent inhibitors of the transmembrane, tumor-associated carbonic anhydrase isoforms IX and XII. Bioorg Med Chem Lett 2011; 21:2975-9. [DOI: 10.1016/j.bmcl.2011.03.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 03/13/2011] [Accepted: 03/14/2011] [Indexed: 11/21/2022]
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42
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Maresca A, Supuran CT. (R)-/(S)-10-Camphorsulfonyl-substituted aromatic/heterocyclic sulfonamides selectively inhibit mitochondrial over cytosolic carbonic anhydrases. Bioorg Med Chem Lett 2011; 21:1334-7. [DOI: 10.1016/j.bmcl.2011.01.050] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 01/11/2011] [Accepted: 01/13/2011] [Indexed: 11/27/2022]
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Maresca A, Scozzafava A, Supuran CT. 7,8-disubstituted- but not 6,7-disubstituted coumarins selectively inhibit the transmembrane, tumor-associated carbonic anhydrase isoforms IX and XII over the cytosolic ones I and II in the low nanomolar/subnanomolar range. Bioorg Med Chem Lett 2010; 20:7255-8. [PMID: 21067924 DOI: 10.1016/j.bmcl.2010.10.094] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Revised: 10/18/2010] [Accepted: 10/19/2010] [Indexed: 01/27/2023]
Abstract
Two series of disubstituted coumarins incorporating ether and acetyl/propionyl moieties in positions 6,7- and 7,8- of the heterocyclic ring were synthesized investigated for the inhibition of the zinc enzyme carbonic anhydrase (CA, EC 4.2.1.1). All these coumarins were very weak or ineffective as inhibitors of the housekeeping, offtarget isoforms CA I and II. The 6,7-disubstituted series showed ineffective inhibition also for the transmembrane tumor-associated isoforms CA IX and XII, whereas the corresponding isomeric 7,8-disubstituted coumarins showed nanomolar/subnanomolar inhibition of CA IX/XII. The nature and position of the groups substituting the coumarin ring in the 7,8-positions greatly influenced CA inhibitory properties, with C1-C4 alkyl ethers being the most effective inhibitors.
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Affiliation(s)
- Alfonso Maresca
- Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Sesto Fiorentino (Firenze), Italy
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Paraoxon, 4-nitrophenyl phosphate and acetate are substrates of α- but not of β-, γ- and ζ-carbonic anhydrases. Bioorg Med Chem Lett 2010; 20:6208-12. [PMID: 20833546 DOI: 10.1016/j.bmcl.2010.08.110] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2010] [Revised: 08/19/2010] [Accepted: 08/21/2010] [Indexed: 02/05/2023]
Abstract
Carbonic anhydrases (CAs, EC 4.2.1.1) belonging to α-, β-, γ- and ζ-classes and from various organisms, ranging from the bacteria, archaea to eukarya domains, were investigated for their esterase/phosphatase activity with 4-nitrophenyl acetate, 4-nitrophenyl phosphate and paraoxon as substrates. Only α-CAs showed esterase/phosphatase activity, whereas enzymes belonging to the β-, γ- and ζ-classes were completely devoid of such activity. Paraoxon, the metabolite of the organophosphorus insecticide parathione, was a much better substrate for several human/murine α-CA isoforms (CA I, II and XIII), with k(cat)/K(M) in the range of 2681.6-4474.9M(-1)s(-1), compared to 4-nitrophenyl phosphate (k(cat)/K(M) of 14.9-1374.4M(-1)s(-1)).
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Maresca A, Supuran CT. Coumarins incorporating hydroxy- and chloro-moieties selectively inhibit the transmembrane, tumor-associated carbonic anhydrase isoforms IX and XII over the cytosolic ones I and II. Bioorg Med Chem Lett 2010; 20:4511-4. [DOI: 10.1016/j.bmcl.2010.06.040] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 06/04/2010] [Accepted: 06/05/2010] [Indexed: 12/18/2022]
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Wagner J, Avvaru BS, Robbins AH, Scozzafava A, Supuran CT, McKenna R. Coumarinyl-substituted sulfonamides strongly inhibit several human carbonic anhydrase isoforms: solution and crystallographic investigations. Bioorg Med Chem 2010; 18:4873-8. [PMID: 20598552 PMCID: PMC2950089 DOI: 10.1016/j.bmc.2010.06.028] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2010] [Revised: 06/08/2010] [Accepted: 06/09/2010] [Indexed: 11/29/2022]
Abstract
We investigated a series of coumarinyl-substituted aromatic sulfonamides as inhibitors of four carbonic anhydrase (CA, EC 4.2.1.1) isoforms with medical applications, the cytosolic hCA I, and II, and the transmembrane, tumor-associated hCA IX and XII. Compounds incorporating 7-methoxy-coumarin-4-yl-acetamide-tails and benzenesulfonamide and benzene-1,3-disulfonamide scaffolds showed medium potency inhibition of hCA I (KIs of 73-131 nM), effective hCA II inhibition (KIs of 9.1-36 nM) and less effective hCA IX and XII inhibition (KIs of 55-128 nM). Only one compound, the derivatized 4-amino-6-trifluoromethyl-benzene-1,3-disulfonamide with the coumarinyl tail, showed effective inhibition of the transmembrane isoforms, with KIs of 5.9-14.2 nM, although it was less effective as hCA I and II inhibitor (KIs of 36-120 nM). An X-ray crystal structure of hCA II in complex with 4-(7-methoxy-coumarin-4-yl-acetamido)-benzenesulfonamide (KI of 9.1 nM against hCA II) showed the intact inhibitor coordinated to the zinc ion from the enzyme active site by the sulfonamide moiety, and participating in a edge-to-face stacking with Phe131, in addition to other hydrophobic and hydrophilic interactions with water molecules and amino acid residues from the active site. Thus, sulfonamides incorporating coumarin rings have a distinct inhibition mechanism compared to the coumarins, and may lead to compounds with interesting inhibition profiles against various alpha-CAs found in mammals or parasites, such as Plasmodium falciparum.
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Affiliation(s)
- Jason Wagner
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Box 100245, Gainesville, Florida 32610; USA
| | - Balendu Sankara Avvaru
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Box 100245, Gainesville, Florida 32610; USA
| | - Arthur H. Robbins
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Box 100245, Gainesville, Florida 32610; USA
| | - Andrea Scozzafava
- Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino (Firenze), Italy
| | - Claudiu T. Supuran
- Università degli Studi di Firenze, Laboratorio di Chimica Bioinorganica, Rm. 188, Via della Lastruccia 3, I-50019 Sesto Fiorentino (Firenze), Italy
| | - Robert McKenna
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Florida, Box 100245, Gainesville, Florida 32610; USA
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Inhibition of the R1 fragment of the cadmium-containing zeta-class carbonic anhydrase from the diatom Thalassiosira weissflogii with anions. Bioorg Med Chem Lett 2010; 20:4745-8. [PMID: 20630751 DOI: 10.1016/j.bmcl.2010.06.139] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2010] [Revised: 06/28/2010] [Accepted: 06/29/2010] [Indexed: 11/23/2022]
Abstract
We investigated the catalytic activity and inhibition of both the zinc and cadmium-containing R1 fragment of the zeta-class carbonic anhydrase (CA, EC 4.2.1.1) from the marine diatom Thalassiosira weissflogii. Our data prove that these enzymes are not only very efficient catalysts for the physiological reaction, but also sensitive to sulfonamide and anion inhibitors, with inhibition constants from the nanomolar to millimolar range. Acetazolamide inhibited the two enzymes with K(I)s in the range of 58-92 nM. The best anion inhibitors of Cd-R1 were thiocyanate, sulfamate and sulfamide, with K(I)s of 10-89 microM, whereas the best Zn-R1 anion inhibitors were sulfamate and sulfamide with K(I)s of 60-72 microM. These enzymes were only weakly inhibited by chloride, bromide or sulfate, main anion components of sea water, with inhibition constants in the range of 0.24-0.85 mM. Thus, similarly to CAs belonging to other classes, the zeta-class CA (with either cadmium or zinc ions at the active site) was inhibited by both anions and sulfonamides.
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Di Fiore A, Monti SM, Innocenti A, Winum JY, De Simone G, Supuran CT. Carbonic anhydrase inhibitors: Crystallographic and solution binding studies for the interaction of a boron-containing aromatic sulfamide with mammalian isoforms I–XV. Bioorg Med Chem Lett 2010; 20:3601-5. [DOI: 10.1016/j.bmcl.2010.04.114] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 04/26/2010] [Accepted: 04/26/2010] [Indexed: 10/19/2022]
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49
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50
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Vullo D, Nishimori I, Scozzafava A, Köhler S, Winum JY, Supuran CT. Inhibition studies of a β-carbonic anhydrase from Brucella suis with a series of water soluble glycosyl sulfanilamides. Bioorg Med Chem Lett 2010; 20:2178-82. [DOI: 10.1016/j.bmcl.2010.02.042] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Revised: 02/08/2010] [Accepted: 02/08/2010] [Indexed: 11/16/2022]
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