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Xiao-Qun Z, Xian-Li M, Ariffin NS. The potential of carbonic anhydrase enzymes as a novel target for anti-cancer treatment. Eur J Pharmacol 2024; 976:176677. [PMID: 38825301 DOI: 10.1016/j.ejphar.2024.176677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 05/15/2024] [Accepted: 05/27/2024] [Indexed: 06/04/2024]
Abstract
Carbonic anhydrase (CA) is a zinc-dependent metal enzyme that maintains the pH and carbon dioxide (CO2) homeostasis in cells by catalyzing the reversible hydration and dehydration of CO2 and bicarbonate (HCO3-). In mammals, there are 16 isozymes of CA existed, namely CAI to CAXIV, but only 15 isozymes are found in humans except CAXV. Human CAs have highly conserved catalytic domains, all of which are distributed in different tissues and play important physiological roles. Changes in their functions may disrupt the typical distribution of CAs throughout human body and therefore CAs can be used as diagnostic biomarkers for many diseases. Furthermore, the expression of CAs is correlated to the progression of numerous tumors, therapeutic sensitivity and patient prognosis. In this review, we discuss thoroughly the structure of CAs, their functional activities in human physiology, dysregulations and diseases related to CAs, and different types of CA inhibitors that can reverse their dysregulation.
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Affiliation(s)
- Zhou Xiao-Qun
- Department of Pharmacology and Pharmaceutical Chemistry, Faculty of Pharmacy, Universiti Teknologi MARA, 42300, Bandar Puncak Alam, Selangor, Malaysia; Guilin Medical University, GuiLin, China
| | | | - Nur Syamimi Ariffin
- Department of Pharmacology and Pharmaceutical Chemistry, Faculty of Pharmacy, Universiti Teknologi MARA, 42300, Bandar Puncak Alam, Selangor, Malaysia.
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2
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Bertling E, Blaesse P, Seja P, Kremneva E, Gateva G, Virtanen MA, Summanen M, Spoljaric I, Uvarov P, Blaesse M, Paavilainen VO, Vutskits L, Kaila K, Hotulainen P, Ruusuvuori E. Carbonic anhydrase seven bundles filamentous actin and regulates dendritic spine morphology and density. EMBO Rep 2021; 22:e50145. [PMID: 33719157 PMCID: PMC8025036 DOI: 10.15252/embr.202050145] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 01/14/2021] [Accepted: 01/28/2021] [Indexed: 01/02/2023] Open
Abstract
Intracellular pH is a potent modulator of neuronal functions. By catalyzing (de)hydration of CO2 , intracellular carbonic anhydrase (CAi ) isoforms CA2 and CA7 contribute to neuronal pH buffering and dynamics. The presence of two highly active isoforms in neurons suggests that they may serve isozyme-specific functions unrelated to CO2 -(de)hydration. Here, we show that CA7, unlike CA2, binds to filamentous actin, and its overexpression induces formation of thick actin bundles and membrane protrusions in fibroblasts. In CA7-overexpressing neurons, CA7 is enriched in dendritic spines, which leads to aberrant spine morphology. We identified amino acids unique to CA7 that are required for direct actin interactions, promoting actin filament bundling and spine targeting. Disruption of CA7 expression in neocortical neurons leads to higher spine density due to increased proportion of small spines. Thus, our work demonstrates highly distinct subcellular expression patterns of CA7 and CA2, and a novel, structural role of CA7.
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Affiliation(s)
- Enni Bertling
- Neuroscience CenterHiLIFEUniversity of HelsinkiHelsinkiFinland
- Minerva Institute for Medical ResearchBiomedicum Helsinki 2UHelsinkiFinland
| | - Peter Blaesse
- Institute of Physiology IWestfälische Wilhelms‐Universität MünsterMünsterGermany
- Faculty of Biological and Environmental SciencesMolecular and Integrative Biosciences, and HiLIFEUniversity of HelsinkiHelsinkiFinland
| | - Patricia Seja
- Neuroscience CenterHiLIFEUniversity of HelsinkiHelsinkiFinland
- Faculty of Biological and Environmental SciencesMolecular and Integrative Biosciences, and HiLIFEUniversity of HelsinkiHelsinkiFinland
| | | | | | - Mari A Virtanen
- Neuroscience CenterHiLIFEUniversity of HelsinkiHelsinkiFinland
- Faculty of Biological and Environmental SciencesMolecular and Integrative Biosciences, and HiLIFEUniversity of HelsinkiHelsinkiFinland
- Department of Anesthesiology, PharmacologyIntensive Care and Emergency MedicineUniversity Hospitals of GenevaGenevaSwitzerland
| | - Milla Summanen
- Neuroscience CenterHiLIFEUniversity of HelsinkiHelsinkiFinland
- Faculty of Biological and Environmental SciencesMolecular and Integrative Biosciences, and HiLIFEUniversity of HelsinkiHelsinkiFinland
| | - Inkeri Spoljaric
- Neuroscience CenterHiLIFEUniversity of HelsinkiHelsinkiFinland
- Faculty of Biological and Environmental SciencesMolecular and Integrative Biosciences, and HiLIFEUniversity of HelsinkiHelsinkiFinland
| | - Pavel Uvarov
- Neuroscience CenterHiLIFEUniversity of HelsinkiHelsinkiFinland
- Faculty of Biological and Environmental SciencesMolecular and Integrative Biosciences, and HiLIFEUniversity of HelsinkiHelsinkiFinland
| | | | | | - Laszlo Vutskits
- Department of Anesthesiology, PharmacologyIntensive Care and Emergency MedicineUniversity Hospitals of GenevaGenevaSwitzerland
| | - Kai Kaila
- Neuroscience CenterHiLIFEUniversity of HelsinkiHelsinkiFinland
- Faculty of Biological and Environmental SciencesMolecular and Integrative Biosciences, and HiLIFEUniversity of HelsinkiHelsinkiFinland
| | - Pirta Hotulainen
- Neuroscience CenterHiLIFEUniversity of HelsinkiHelsinkiFinland
- Minerva Institute for Medical ResearchBiomedicum Helsinki 2UHelsinkiFinland
| | - Eva Ruusuvuori
- Neuroscience CenterHiLIFEUniversity of HelsinkiHelsinkiFinland
- Faculty of Biological and Environmental SciencesMolecular and Integrative Biosciences, and HiLIFEUniversity of HelsinkiHelsinkiFinland
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3
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Protective Role of Carbonic Anhydrases III and VII in Cellular Defense Mechanisms upon Redox Unbalance. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:2018306. [PMID: 30154947 PMCID: PMC6098850 DOI: 10.1155/2018/2018306] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 07/24/2018] [Indexed: 01/07/2023]
Abstract
Under oxidative stress conditions, several constitutive cellular defense systems are activated, which involve both enzymatic systems and molecules with antioxidant properties such as glutathione and vitamins. In addition, proteins containing reactive sulfhydryl groups may eventually undergo reversible redox modifications whose products act as protective shields able to avoid further permanent molecular oxidative damage either in stressful conditions or under pathological circumstances. After the recovery of normal redox conditions, the reduced state of protein sulfhydryl groups is restored. In this context, carbonic anhydrases (CAs) III and VII, which are human metalloenzymes catalyzing the reversible hydration of carbon dioxide to bicarbonate and proton, have been identified to play an antioxidant role in cells where oxidative damage occurs. Both proteins are mainly localized in tissues characterized by a high rate of oxygen consumption, and contain on their molecular surface two reactive cysteine residues eventually undergoing S-glutathionylation. Here, we will provide an overview on the molecular and functional features of these proteins highlighting their implications into molecular processes occurring during oxidative stress conditions.
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4
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Buonanno M, Di Fiore A, Langella E, D'Ambrosio K, Supuran CT, Monti SM, De Simone G. The Crystal Structure of a hCA VII Variant Provides Insights into the Molecular Determinants Responsible for Its Catalytic Behavior. Int J Mol Sci 2018; 19:ijms19061571. [PMID: 29795045 PMCID: PMC6032174 DOI: 10.3390/ijms19061571] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 05/07/2018] [Accepted: 05/19/2018] [Indexed: 01/07/2023] Open
Abstract
Although important progress has been achieved in understanding the catalytic mechanism of Carbonic Anhydrases, a detailed picture of all factors influencing the catalytic efficiency of the various human isoforms is still missing. In this paper we report a detailed structural study and theoretical pKa calculations on a hCA VII variant. The obtained data were compared with those already known for another thoroughly investigated cytosolic isoform, hCA II. Our structural studies show that in hCA VII the network of ordered water molecules, which connects the zinc bound solvent molecule to the proton shuttle His64, is altered compared to hCA II, causing a reduction of the catalytic efficiency. Theoretical calculations suggest that changes in solvent network are related to the difference in pKa of the proton shuttle in the two enzymes. The residue that plays a major role in determining the diverse pKa values of the proton shuttle is the one in position four, namely His for hCA II and Gly for hCA VII. This residue is located on the protein surface, outside of the active site cavity. These findings are in agreement with our previous studies that highlighted the importance of histidines on the protein surface of hCA II (among which His4) as crucial residues for the high catalytic efficiency of this isoform.
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Affiliation(s)
- Martina Buonanno
- 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.
| | - Emma Langella
- Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, 80134 Napoli, Italy.
| | - Katia D'Ambrosio
- Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, 80134 Napoli, Italy.
| | - Claudiu T Supuran
- Dipartimento Neurofarba, Sezione di Scienze Farmaceutiche e Nutraceutiche, Università degli Studi di Firenze, Via U. Schiff 6, 50019 Florence, Italy.
| | - Simona Maria Monti
- Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, 80134 Napoli, Italy.
| | - Giuseppina De Simone
- Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, 80134 Napoli, Italy.
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5
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Mboge MY, Mahon BP, McKenna R, Frost SC. Carbonic Anhydrases: Role in pH Control and Cancer. Metabolites 2018; 8:E19. [PMID: 29495652 PMCID: PMC5876008 DOI: 10.3390/metabo8010019] [Citation(s) in RCA: 145] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/08/2018] [Accepted: 02/22/2018] [Indexed: 02/07/2023] Open
Abstract
The pH of the tumor microenvironment drives the metastatic phenotype and chemotherapeutic resistance of tumors. Understanding the mechanisms underlying this pH-dependent phenomenon will lead to improved drug delivery and allow the identification of new therapeutic targets. This includes an understanding of the role pH plays in primary tumor cells, and the regulatory factors that permit cancer cells to thrive. Over the last decade, carbonic anhydrases (CAs) have been shown to be important mediators of tumor cell pH by modulating the bicarbonate and proton concentrations for cell survival and proliferation. This has prompted an effort to inhibit specific CA isoforms, as an anti-cancer therapeutic strategy. Of the 12 active CA isoforms, two, CA IX and XII, have been considered anti-cancer targets. However, other CA isoforms also show similar activity and tissue distribution in cancers and have not been considered as therapeutic targets for cancer treatment. In this review, we consider all the CA isoforms and their possible role in tumors and their potential as targets for cancer therapy.
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Affiliation(s)
- Mam Y Mboge
- University of Florida, College of Medicine, Department of Biochemistry and Molecular Biology, P.O. Box 100245, Gainesville, FL 32610, USA.
| | - Brian P Mahon
- University of Florida, College of Medicine, Department of Biochemistry and Molecular Biology, P.O. Box 100245, Gainesville, FL 32610, USA.
| | - Robert McKenna
- University of Florida, College of Medicine, Department of Biochemistry and Molecular Biology, P.O. Box 100245, Gainesville, FL 32610, USA.
| | - Susan C Frost
- University of Florida, College of Medicine, Department of Biochemistry and Molecular Biology, P.O. Box 100245, Gainesville, FL 32610, USA.
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6
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Kalinin S, Kopylov S, Tuccinardi T, Sapegin A, Dar’in D, Angeli A, Supuran CT, Krasavin M. Lucky Switcheroo: Dramatic Potency and Selectivity Improvement of Imidazoline Inhibitors of Human Carbonic Anhydrase VII. ACS Med Chem Lett 2017; 8:1105-1109. [PMID: 29057059 DOI: 10.1021/acsmedchemlett.7b00300] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 09/15/2017] [Indexed: 02/07/2023] Open
Abstract
A substantial improvement of potency and selectivity of imidazoline-based inhibitors of hCA VII (a promising target for the treatment of seizures and neuropathic pain) was achieved by simply switching the position of the benzenesulfonamide moiety from N1 (as in the earlier reported series) to C2. Selectivity indices vs the off-target isoforms (hCA I, I, I and IV) greater than 100 were reached, which is exceedingly rare for hCA VII inhibitors. The drastic profile improvement of the new series has been rationalized by an additional hydrogen bonding with the nonconserved Q69 residue in the active site of hCA VII (absent in the other three isoforms studied), which also results in a favorable accommodation of the inhibitor's lipophilic periphery in the nearby hydrophobic pocket. The robustness of the docking simulations was tested and confirmed by molecular dynamics simulations.
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Affiliation(s)
- Stanislav Kalinin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Stanislav Kopylov
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Tiziano Tuccinardi
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Alexander Sapegin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Dmitry Dar’in
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Andrea Angeli
- Neurofarba
Department, Universita degli Studi di Firenze, 50121 Florence, Italy
| | - Claudiu T. Supuran
- Neurofarba
Department, Universita degli Studi di Firenze, 50121 Florence, Italy
| | - Mikhail Krasavin
- Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
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7
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Büyükkıdan N, Büyükkıdan B, Bülbül M, Kasımoğulları R, Mert S. Synthesis, characterization and in vitro inhibition of metal complexes of pyrazole based sulfonamide on human erythrocyte carbonic anhydrase isozymes I and II. J Enzyme Inhib Med Chem 2017; 32:208-213. [PMID: 28114829 PMCID: PMC6009907 DOI: 10.1080/14756366.2016.1247056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Sulfonamides represent an important class of biologically active compounds. A sulfonamide possessing carbonic anhydrase (CA) inhibitory properties obtained from a pyrazole based sulfonamide, ethyl 1-(3-nitrophenyl)-5-phenyl-3-((5-sulfamoyl-1,3,4-thiadiazol-2-yl)carbamoyl)-1H-pyrazole-4-carboxylate (1), and its metal complexes with the Ni(II) for (2), Cu(II) for (3) and Zn(II) for (4) have been synthesized. The structures of metal complexes (2-4) were established on the basis of their elemental analysis, 1H NMR, IR, UV-Vis and MS spectral data. The inhibition of two human carbonic anhydrase (hCA, EC 4.2.1.1) isoenzymes I and II, with 1 and synthesized complexes (2-4) and acetazolamide (AAZ) as a control compound was investigated in vitro by using the hydratase and esterase assays. The complexes 2, 3 and 4 showed inhibition constant in the range 0.1460-0.3930 µM for hCA-I and 0.0740-0.0980 µM for hCA-II, and they had effective more inhibitory activity on hCA-I and hCA-II than corresponding free ligand 1 and than AAZ.
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Affiliation(s)
- Nurgün Büyükkıdan
- a Department of Chemistry , Arts and Science Faculty, Dumlupinar University , Kutahya , Turkey
| | - Bülent Büyükkıdan
- a Department of Chemistry , Arts and Science Faculty, Dumlupinar University , Kutahya , Turkey
| | - Metin Bülbül
- a Department of Chemistry , Arts and Science Faculty, Dumlupinar University , Kutahya , Turkey
| | - Rahmi Kasımoğulları
- a Department of Chemistry , Arts and Science Faculty, Dumlupinar University , Kutahya , Turkey
| | - Samet Mert
- a Department of Chemistry , Arts and Science Faculty, Dumlupinar University , Kutahya , Turkey
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8
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Gokcen T, Gulcin I, Ozturk T, Goren AC. A class of sulfonamides as carbonic anhydrase I and II inhibitors. J Enzyme Inhib Med Chem 2016; 31:180-188. [PMID: 27353698 DOI: 10.1080/14756366.2016.1198900] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Four groups of novel sulfonamide derivatives: (i) acetoxybenzamide, (ii) triacetoxybenzamide, (iii) hydroxybenzamide and (iv) trihydroxybenzamide, all having thiazole, pyrimidine, pyridine, isoxazole and thiadiazole moieties were prepared and their inhibitory effects were studied on two metalloenzymes, i.e. carbonic anhydrase isozymes (hCA I and II), purified from human erythrocyte cells by Sepharose-4B-l-tyrosine-sulfanilamide affinity chromatography. These enzymes are present in almost all living organisms to catalyse the synthesis of bicarbonate ion (HCO3-) from carbon dioxide and water. The sulfonamide derivatives were found to be active against hCA I and II in the range of 2.62-136.54 and 5.74-210.58 nM, respectively.
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Affiliation(s)
- Taner Gokcen
- a Chemistry Group Laboratories, TUBITAK UME , Gebze , Turkey.,b Department of Organic Chemistry , Faculty of Science, Istanbul Technical University , Istanbul , Turkey
| | - Ilhami Gulcin
- c Department of Chemistry , Faculty of Science, Atatürk University , Erzurum , Turkey , and.,d Fetal Programming of Diseases Research Chair, Zoology Department, College of Science, King Saud University , Riyadh , Saudi Arabia
| | - Turan Ozturk
- a Chemistry Group Laboratories, TUBITAK UME , Gebze , Turkey.,b Department of Organic Chemistry , Faculty of Science, Istanbul Technical University , Istanbul , Turkey
| | - Ahmet C Goren
- a Chemistry Group Laboratories, TUBITAK UME , Gebze , Turkey
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9
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Adeva-Andany MM, Fernández-Fernández C, Sánchez-Bello R, Donapetry-García C, Martínez-Rodríguez J. The role of carbonic anhydrase in the pathogenesis of vascular calcification in humans. Atherosclerosis 2015; 241:183-91. [PMID: 26005791 DOI: 10.1016/j.atherosclerosis.2015.05.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 05/04/2015] [Accepted: 05/07/2015] [Indexed: 11/19/2022]
Abstract
Carbonic anhydrases are a group of isoenzymes that catalyze the reversible conversion of carbon dioxide into bicarbonate. They participate in a constellation of physiological processes in humans, including respiration, bone metabolism, and the formation of body fluids, including urine, bile, pancreatic juice, gastric secretion, saliva, aqueous humor, cerebrospinal fluid, and sweat. In addition, carbonic anhydrase may provide carbon dioxide/bicarbonate to carboxylation reactions that incorporate carbon dioxide to substrates. Several isoforms of carbonic anhydrase have been identified in humans, but their precise physiological role and the consequences of their dysfunction are mostly unknown. Carbonic anhydrase isoenzymes are involved in calcification processes in a number of biological systems, including the formation of calcareous spicules from sponges, the formation of shell in some animals, and the precipitation of calcium salts induced by several microorganisms, particularly urease-producing bacteria. In human tissues, carbonic anhydrase is implicated in calcification processes either directly by facilitating calcium carbonate deposition which in turn serves to facilitate calcium phosphate mineralization, or indirectly via its action upon γ-glutamyl-carboxylase, a carboxylase that enables the biological activation of proteins involved in calcification, such as matrix Gla protein, bone Gla protein, and Gla-rich protein. Carbonic anhydrase is implicated in calcification of human tissues, including bone and soft-tissue calcification in rheumatological disorders such as ankylosing spondylitis and dermatomyositis. Carbonic anhydrase may be also involved in bile and kidney stone formation and carcinoma-associated microcalcifications. The aim of this review is to evaluate the possible association between carbonic anhydrase isoenzymes and vascular calcification in humans.
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Affiliation(s)
- María M Adeva-Andany
- Nephrology Division, Hospital General Juan Cardona, c/ Pardo Bazán s/n, 15406 Ferrol, Spain.
| | | | - Rocío Sánchez-Bello
- Nephrology Division, Hospital General Juan Cardona, c/ Pardo Bazán s/n, 15406 Ferrol, Spain
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10
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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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11
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Duan Z, Chen S, Sun C, Shi F, Wu G, Liu A, Xu G, Yang N. Polymorphisms in Ion Transport Genes Are Associated with Eggshell Mechanical Property. PLoS One 2015; 10:e0130160. [PMID: 26106883 PMCID: PMC4481273 DOI: 10.1371/journal.pone.0130160] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 05/16/2015] [Indexed: 11/19/2022] Open
Abstract
Eggshell mechanical property traits such as eggshell breaking strength (ESS), eggshell thickness (EST) and eggshell weight (ESW) are most common and important indexes to evaluate eggshell quality in poultry industry. Uterine ion transporters involve in eggshell formation and might be associated with eggshell mechanical property traits. In this study, 99 SNPs in 15 ion transport genes were selected to genotype 976 pedigreed hens of Rhode Island Red. ESS, EST and ESW were measured for each bird at 55 weeks of age. The association study showed that 14 SNPs in 8 genes were significantly related (p < 0.05) with at least one trait, and their contributions to phenotypic variance ranged from 0.23% to 4.14%. Both ATP2A3 and SLC4A5 had a significant effect on all the three traits. Strong linkage disequilibrium (LD) was detected among SNPs in four genes: ATP2A3, ITPR1, SLC8A3, SCNN1a. The significant effects of those diplotypes on eggshell mechanical property traits were found, and their contributions to phenotypic variance ranged from 0.50% to 0.70%. It was concluded that the identified SNPs and diplotypes in this study were potential markers influencing the eggshell mechanical properties, which could contribute to the genetic improvement of eggshell quality.
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Affiliation(s)
- Zhongyi Duan
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Sirui Chen
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Congjiao Sun
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Fengying Shi
- Beijing Huadu Yukou Poultry Industry Co., Ltd., Beijing, China
| | - Guiqin Wu
- Beijing Huadu Yukou Poultry Industry Co., Ltd., Beijing, China
| | - Aiqiao Liu
- Beijing Huadu Yukou Poultry Industry Co., Ltd., Beijing, China
| | - Guiyun Xu
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Ning Yang
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
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12
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N-Acylsulfonamides strongly inhibit human carbonic anhydrase isoenzymes I and II. Bioorg Med Chem 2015; 23:2598-605. [PMID: 25863492 DOI: 10.1016/j.bmc.2014.12.054] [Citation(s) in RCA: 135] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Revised: 12/18/2014] [Accepted: 12/22/2014] [Indexed: 12/24/2022]
Abstract
Sulfonamides represent a significant class of biologically active compounds that inhibit carbonic anhydrase (CA, EC.: 4.2.1.1) isoenzymes involved in different pathological and physiological events. Sulfonamide CA inhibitors are used therapeutically as diuretic, antiglaucoma, antiobesity and anticancer agents. A series of new sulfonamides were synthesized using imides and tosyl chloride as starting materials. These N-acylsulfonamides efficiently inhibited the cytosolic human carbonic anhydrase isoenzymes I, and II (hCA I, and II), with nanomolar range inhibition constants ranging between 36.4 ± 6.0-254.6 ± 18.0 and 58.3 ± 0.6-273.3 ± 2.5 nM, respectively.
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13
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Pilipuitytė V, Matulis D. Intrinsic thermodynamics of trifluoromethanesulfonamide and ethoxzolamide binding to human carbonic anhydrase VII. J Mol Recognit 2015; 28:166-72. [DOI: 10.1002/jmr.2404] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 06/09/2014] [Accepted: 06/09/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Vilma Pilipuitytė
- Department of Biothermodynamics and Drug Design, Institute of Biotechnology; Vilnius University; Graičiūno 8 Vilnius LT-02241 Lithuania
| | - Daumantas Matulis
- Department of Biothermodynamics and Drug Design, Institute of Biotechnology; Vilnius University; Graičiūno 8 Vilnius LT-02241 Lithuania
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14
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Syrjänen L, Luukkaala T, Leppilampi M, Kallioinen M, Pastorekova S, Pastorek J, Waheed A, Sly WS, Parkkila S, Karttunen T. Expression of cancer-related carbonic anhydrases IX and XII in normal skin and skin neoplasms. APMIS 2014; 122:880-9. [PMID: 24698175 DOI: 10.1111/apm.12251] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 12/20/2013] [Indexed: 12/25/2022]
Abstract
Purpose of the study was to evaluate the presence of hypoxia-inducible, tumour-associated carbonic anhydrases IX and XII in normal skin and a series of cutaneous tumours. Human tumour samples were taken during surgical operations performed on 245 patients and were immunohistochemically stained. A histological score value was calculated for statistical analyses which were performed using SPSS for Windows, versions 17.0 and 20.0. In normal skin, the highest expression of CA IX was detected in hair follicles, sebaceous glands, and basal parts of epidermis. CA XII was detected in all epithelial components of skin. Both CA IX and CA XII expression levels were significantly different in epidermal, appendigeal, and melanocytic tumour categories. Both CA IX and XII showed the most intense immunostaining in epidermal tumours, whereas virtually all melanocytic tumours were devoid of CA IX and XII immunostaining. In premalignant lesions, CA IX expression significantly increased when the tumours progressed to more severe dysplasia forms. Both CA IX and XII are highly expressed in different epithelial components of skin. They are also highly expressed in epidermal tumours, in which CA IX expression levels also correlate with the dysplasia grade. Interestingly, both isozymes are absent in melanocytic tumours.
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Affiliation(s)
- Leo Syrjänen
- Institute of Biomedical Technology and School of Medicine, University of Tampere, Tampere, Finland
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15
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Del Giudice R, Monti DM, Truppo E, Arciello A, Supuran CT, De Simone G, Monti SM. Human carbonic anhydrase VII protects cells from oxidative damage. Biol Chem 2014; 394:1343-8. [PMID: 23851572 DOI: 10.1515/hsz-2013-0204] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 07/09/2013] [Indexed: 02/02/2023]
Abstract
Human carbonic anhydrase (hCA) VII is a cytosolic enzyme with high carbon dioxide hydration activity. Recently, S-glutathionylation of two cysteine residues from the enzyme was revealed, suggesting a new role as oxygen radical scavenger. We analyzed the effect of native and tetramutated hCA VII (all cysteines mutated into serines) in a eukaryotic system by stressing cells with an oxidant agent. Results clearly show that native hCA VII can protect cells from oxidative damage by preventing the apoptosis cascade and that cysteines play a leading role in this process. Our findings definitively confirm hCA VII protective role toward oxidative insult.
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16
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Abstract
Carbonic anhydrases are ubiquitous enzymes that catalyze the reversible hydration of carbon dioxide. These enzymes are of ancient origin as they are found in the deepest of branches of the evolutionary tree. Of the five different classes of carbonic anhydrases, the alpha class has perhaps received the most attention because of its role in human pathology. This review focuses on the physiological function of this class of carbonic anhydrases organized by their cellular location.
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Affiliation(s)
- Susan C Frost
- Department of Biochemistry and Molecular Biology, University of Florida, Gainesville, FL, USA,
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17
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De Luca L, Ferro S, Damiano FM, Supuran CT, Vullo D, Chimirri A, Gitto R. Structure-based screening for the discovery of new carbonic anhydrase VII inhibitors. Eur J Med Chem 2013; 71:105-11. [PMID: 24287559 DOI: 10.1016/j.ejmech.2013.10.071] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 10/28/2013] [Accepted: 10/29/2013] [Indexed: 12/31/2022]
Abstract
Among the different mammalian isoforms of Carbonic Anhydrase, the hCA VII is mainly expressed in the brain where it is involved in several neurological diseases. Thereby hCA VII has been validated as an attractive target for the discovery of selective inhibitors for the treatment of epilepsy and neurological pain. To identify new chemical entities as carbonic anhydrase inhibitors (CAIs) targeting hCA VII, we used a structure-based approach. By means of LigandScout software we built pharmacophore models from crystal structures of two well-known CAIs in complex with hCA VII. A merged pharmacophore hypothesis has been obtained. Subsequently, a focused library of compounds was screened against pharmacophore model and the most interesting hits were docked into the crystal structure of hCA VII. As a result, we identified new compounds displaying significant CA inhibitory effects in the nanomolar range.
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Affiliation(s)
- Laura De Luca
- Dipartimento di Scienze del Farmaco e dei Prodotti per la Salute, Università di Messina, Viale Annunziata, I-98168 Messina, Italy.
| | - Stefania Ferro
- Dipartimento di Scienze del Farmaco e dei Prodotti per la Salute, Università di Messina, Viale Annunziata, I-98168 Messina, Italy
| | - Francesca M Damiano
- Dipartimento di Scienze del Farmaco e dei Prodotti per la Salute, Università di Messina, Viale Annunziata, I-98168 Messina, Italy
| | - Claudiu T Supuran
- Università degli Studi di Firenze, Dipartimento NEUROFARBA, Sezione di Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Daniela Vullo
- Università degli Studi di Firenze, Dipartimento NEUROFARBA, Sezione di Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Alba Chimirri
- Dipartimento di Scienze del Farmaco e dei Prodotti per la Salute, Università di Messina, Viale Annunziata, I-98168 Messina, Italy
| | - Rosaria Gitto
- Dipartimento di Scienze del Farmaco e dei Prodotti per la Salute, Università di Messina, Viale Annunziata, I-98168 Messina, Italy
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18
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Carbonic anhydrase-related protein XI: structure of the gene in the greater false vampire bat (Megaderma lyra) compared with human and domestic pig. Biochem Genet 2013; 51:474-81. [PMID: 23417223 DOI: 10.1007/s10528-013-9578-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 01/23/2013] [Indexed: 10/27/2022]
Abstract
Carbonic anhydrase-related protein XI (CA-RP XI) is a member of the α-carbonic anhydrase family (encoded by the gene CA-11), which has lost features of the active site required for enzymatic activity. Using PCR, we amplified CA-11 from genomic DNA of the bat Megaderma lyra. To elucidate the gene structure, we sequenced PCR products and compared their sequences with genomic and mRNA sequences known from human and domestic pig. We identified and sequenced eight introns in the bat CA-11. Five introns (introns 3-7) are located in identical or similar positions in other members of the vertebrate α-carbonic anhydrase gene family. Two 5' introns and one 3' intron are located in the regions of little or no sequence similarity with other members of the gene family. The low sequence similarity and additional introns suggest a separate evolutionary origin for the 5' and 3' portions of the CA-RP XI gene.
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19
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Zhang JL, Zheng QC, Zhang HX. Theoretical improvement of the specific inhibitor of human carbonic anhydrase VII. Comput Biol Chem 2011; 35:50-6. [PMID: 21320803 DOI: 10.1016/j.compbiolchem.2011.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Revised: 01/12/2011] [Accepted: 01/13/2011] [Indexed: 10/18/2022]
Abstract
The selectivity of a known arylsulfonamides inhibitor for two isozymes II and VII of human carbonic anhydrases (hCAs) was studied by homology modeling, molecular docking and molecular dynamics methods. The results show that the selectivity of the inhibitor for two isozymes is due to the different side chain lengths between N67 of hCA II and Q64 of hCA VII. One more methene group in the side chain of Q64 of hCA VII makes it possible to form the hydrogen bond with the bromide atom of the known inhibitor. From the point of view, the modification to the known inhibitor was performed to obtain an inhibitor with higher selectivity. The complex conformations of the new designed inhibitor and two isozymes designate the formation of the hydrogen bond between the newly added group (hydroxypropyl group) and Q64 of hCA VII but N67 of hCA II. The results of the binding free energy from the MM/PBSA approach also prove the selectivity improvement of the new inhibitor in comparison with the known inhibitor. The work will help the design of the isozyme-specific inhibitors of hCA VII.
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Affiliation(s)
- Ji-Long Zhang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, People's Republic of China
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20
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Bootorabi F, Haapasalo J, Smith E, Haapasalo H, Parkkila S. Carbonic anhydrase VII–a potential prognostic marker in gliomas. Health (London) 2011. [DOI: 10.4236/health.2011.31002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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21
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Bootorabi F, Jänis J, Smith E, Waheed A, Kukkurainen S, Hytönen V, Valjakka J, Supuran CT, Vullo D, Sly WS, Parkkila S. Analysis of a shortened form of human carbonic anhydrase VII expressed in vitro compared to the full-length enzyme. Biochimie 2010; 92:1072-80. [PMID: 20493921 DOI: 10.1016/j.biochi.2010.05.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Accepted: 05/13/2010] [Indexed: 12/22/2022]
Abstract
Carbonic anhydrase (CA) enzymes are expressed in all organs of the mammalian body where they participate in important physiological functions. CA VII is a cytosolic isozyme which may be expressed as two forms according to the recent GenBank data. We designed a present study to express and characterize the human CA VII forms: full-length CA VII and short form (predicted to lack 56 residues from the N-terminus). Reverse transcriptase PCR analysis revealed mRNAs for both CA VII forms in the human brain. These different forms were expressed as recombinant proteins to investigate their biochemical properties. The full-length CA VII was used to raise a polyclonal antiserum in a rabbit, and the antiserum was then employed in western blot analyses and immunohistochemistry of mouse tissues. Data from mass spectrometry and comparative modeling showed that CA VII protein contains a single intramolecular disulfide bridge (Cys-56 to Cys-180) which is lacking in the short form. The computer model suggested distinctly different folding for the different forms. The more exposed structure and the absence of the disulfide bridge in the short form could make this protein more susceptible to degradation. In fact, this was realized in several protein purification efforts in which the short form readily degraded during the experimental procedures. From these results, we conclude that the full-length CA VII is a predominant active form in human brain and also in other tissues. In addition to the brain, CA VII is expressed in several other organs including the stomach, duodenum, colon, liver, and skeletal muscle. The distribution pattern suggests multiple functions for CA VII in different organs.
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Affiliation(s)
- Fatemeh Bootorabi
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, 33014 Tampere, Finland
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22
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Hilvo M, Salzano AM, Innocenti A, Kulomaa MS, Scozzafava A, Scaloni A, Parkkila S, Supuran CT. Cloning, Expression, Post-Translational Modifications and Inhibition Studies on the Latest Mammalian Carbonic Anhydrase Isoform, CA XV. J Med Chem 2008; 52:646-54. [DOI: 10.1021/jm801267c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mika Hilvo
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland, Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, via Argine 1085, 80147 Naples, Italy, Bioinorganic Chemistry Laboratory, University of Florence, Room 188, via della Lastruccia 3, I-50019, Sesto Fiorentino (Florence), Italy, and School of Medicine, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland
| | - Anna Maria Salzano
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland, Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, via Argine 1085, 80147 Naples, Italy, Bioinorganic Chemistry Laboratory, University of Florence, Room 188, via della Lastruccia 3, I-50019, Sesto Fiorentino (Florence), Italy, and School of Medicine, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland
| | - Alessio Innocenti
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland, Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, via Argine 1085, 80147 Naples, Italy, Bioinorganic Chemistry Laboratory, University of Florence, Room 188, via della Lastruccia 3, I-50019, Sesto Fiorentino (Florence), Italy, and School of Medicine, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland
| | - Markku S. Kulomaa
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland, Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, via Argine 1085, 80147 Naples, Italy, Bioinorganic Chemistry Laboratory, University of Florence, Room 188, via della Lastruccia 3, I-50019, Sesto Fiorentino (Florence), Italy, and School of Medicine, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland
| | - Andrea Scozzafava
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland, Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, via Argine 1085, 80147 Naples, Italy, Bioinorganic Chemistry Laboratory, University of Florence, Room 188, via della Lastruccia 3, I-50019, Sesto Fiorentino (Florence), Italy, and School of Medicine, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland
| | - Andrea Scaloni
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland, Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, via Argine 1085, 80147 Naples, Italy, Bioinorganic Chemistry Laboratory, University of Florence, Room 188, via della Lastruccia 3, I-50019, Sesto Fiorentino (Florence), Italy, and School of Medicine, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland
| | - Seppo Parkkila
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland, Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, via Argine 1085, 80147 Naples, Italy, Bioinorganic Chemistry Laboratory, University of Florence, Room 188, via della Lastruccia 3, I-50019, Sesto Fiorentino (Florence), Italy, and School of Medicine, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland
| | - Claudiu T. Supuran
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland, Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, via Argine 1085, 80147 Naples, Italy, Bioinorganic Chemistry Laboratory, University of Florence, Room 188, via della Lastruccia 3, I-50019, Sesto Fiorentino (Florence), Italy, and School of Medicine, University of Tampere and Tampere University Hospital, Biokatu 6, FI-33520, Tampere, Finland
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23
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Hilvo M, Baranauskiene L, Salzano AM, Scaloni A, Matulis D, Innocenti A, Scozzafava A, Monti SM, Di Fiore A, De Simone G, Lindfors M, Jänis J, Valjakka J, Pastoreková S, Pastorek J, Kulomaa MS, Nordlund HR, Supuran CT, Parkkila S. Biochemical characterization of CA IX, one of the most active carbonic anhydrase isozymes. J Biol Chem 2008; 283:27799-27809. [PMID: 18703501 DOI: 10.1074/jbc.m800938200] [Citation(s) in RCA: 227] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Carbonic anhydrase IX (CA IX) is an exceptional member of the CA protein family; in addition to its classical role in pH regulation, it has also been proposed to participate in cell proliferation, cell adhesion, and tumorigenic processes. To characterize the biochemical properties of this membrane protein, two soluble recombinant forms were produced using the baculovirus-insect cell expression system. The recombinant proteins consisted of either the CA IX catalytic domain only (CA form) or the extracellular domain, which included both the proteoglycan and catalytic domains (PG + CA form). The produced proteins lacked the small transmembrane and intracytoplasmic regions of CA IX. Stopped-flow spectrophotometry experiments on both proteins demonstrated that in the excess of certain metal ions the PG + CA form exhibited the highest catalytic activity ever measured for any CA isozyme. Investigations on the oligomerization and stability of the enzymes revealed that both recombinant proteins form dimers that are stabilized by intermolecular disulfide bond(s). Mass spectrometry experiments showed that CA IX contains an intramolecular disulfide bridge (Cys(119)-Cys(299)) and a unique N-linked glycosylation site (Asn(309)) that bears high mannose-type glycan structures. Parallel experiments on a recombinant protein obtained by a mammalian cell expression system demonstrated the occurrence of an additional O-linked glycosylation site (Thr(78)) and characterized the nature of the oligosaccharide structures. This study provides novel information on the biochemical properties of CA IX and may help characterize the various cellular and pathophysiological processes in which this unique enzyme is involved.
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Affiliation(s)
- Mika Hilvo
- Institute of Medical Technology, FI-33014 Tampere, Finland.
| | - Lina Baranauskiene
- Laboratory of Biothermodynamics and Drug Design, Institute of Biotechnology, LT-02241 Vilnius, Lithuania
| | - Anna Maria Salzano
- Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy
| | - Andrea Scaloni
- Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Naples, Italy
| | - Daumantas Matulis
- Laboratory of Biothermodynamics and Drug Design, Institute of Biotechnology, LT-02241 Vilnius, Lithuania
| | - Alessio Innocenti
- Bioinorganic Chemistry Laboratory, University of Florence, 50019 Sesto Fiorentino (Florence), Italy
| | - Andrea Scozzafava
- Bioinorganic Chemistry Laboratory, University of Florence, 50019 Sesto Fiorentino (Florence), Italy
| | - Simona Maria Monti
- Institute of Biostructures and Bioimages, National Research Council, 80134 Naples, Italy
| | - Anna Di Fiore
- Institute of Biostructures and Bioimages, National Research Council, 80134 Naples, Italy
| | - Giuseppina De Simone
- Institute of Biostructures and Bioimages, National Research Council, 80134 Naples, Italy
| | | | - Janne Jänis
- Department of Chemistry, University of Joensuu, FI-80101 Joensuu, Finland
| | | | - Silvia Pastoreková
- Centre of Molecular Medicine, Institute of Virology, Slovak Academy of Sciences, 84505 Bratislava, Slovak Republic
| | - Jaromir Pastorek
- Centre of Molecular Medicine, Institute of Virology, Slovak Academy of Sciences, 84505 Bratislava, Slovak Republic
| | | | | | - Claudiu T Supuran
- Bioinorganic Chemistry Laboratory, University of Florence, 50019 Sesto Fiorentino (Florence), Italy
| | - Seppo Parkkila
- Institute of Medical Technology, FI-33014 Tampere, Finland; School of Medicine, University of Tampere and Tampere University Hospital, FI-33014 Tampere, Finland
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24
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Isolation and characterization of a gene encoding carbonic anhydrase from Ostertagia ostertagi and quantitative measurement of expression during in vivo exsheathment. Vet Parasitol 2008; 154:58-66. [DOI: 10.1016/j.vetpar.2008.02.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2006] [Revised: 02/11/2008] [Accepted: 02/21/2008] [Indexed: 11/18/2022]
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25
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Krishnamurthy VM, Kaufman GK, Urbach AR, Gitlin I, Gudiksen KL, Weibel DB, Whitesides GM. Carbonic anhydrase as a model for biophysical and physical-organic studies of proteins and protein-ligand binding. Chem Rev 2008; 108:946-1051. [PMID: 18335973 PMCID: PMC2740730 DOI: 10.1021/cr050262p] [Citation(s) in RCA: 561] [Impact Index Per Article: 35.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Vijay M. Krishnamurthy
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
| | - George K. Kaufman
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
| | - Adam R. Urbach
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
| | - Irina Gitlin
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
| | - Katherine L. Gudiksen
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
| | - Douglas B. Weibel
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
| | - George M. Whitesides
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
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26
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Pan PW, Rodriguez A, Parkkila S. A systematic quantification of carbonic anhydrase transcripts in the mouse digestive system. BMC Mol Biol 2007; 8:22. [PMID: 17362527 PMCID: PMC1839105 DOI: 10.1186/1471-2199-8-22] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2006] [Accepted: 03/16/2007] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Carbonic anhydrases (CAs) are physiologically important enzymes which participate in many gastrointestinal processes such as acid and bicarbonate secretion and metabolic pathways including gluconeogenesis and ureagenesis. The genomic data suggests that there are thirteen enzymatically active members of the mammalian CA isozyme family. In the present study, we systematically examined the mRNA expression levels of all known CA isozymes by quantitative real-time PCR in eight tissues of the digestive system of male and female mice. RESULTS The CAs expressed in all tissues were Car5b, Car7, and Car15, among which Car5b showed moderate and Car7 and Car15 extremely low expression levels. Car3, Car12, Car13, and Car14 were detected in seven out of eight tissues and Car2 and Car4 were expressed in six tissues. Importantly, Car1, Car3, and Car13 showed very high expression levels in certain tissues as compared to the other CAs, suggesting that these low activity isozymes may also participate in physiological processes other than CA catalysis and high expression levels are required to fulfil their functions in the body. CONCLUSION A comprehensive mRNA expression profile of the 13 enzymatically active CAs in the murine gastrointestinal tract was produced in the present study. It contributes to a deeper understanding of the distribution of CA isozymes and their potential roles in the mouse digestive system.
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Affiliation(s)
- Pei-wen Pan
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, 33520, Tampere, Finland
| | - Alejandra Rodriguez
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, 33520, Tampere, Finland
| | - Seppo Parkkila
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, 33520, Tampere, Finland
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27
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Halmi P, Parkkila S, Honkaniemi J. Expression of carbonic anhydrases II, IV, VII, VIII and XII in rat brain after kainic acid induced status epilepticus. Neurochem Int 2005; 48:24-30. [PMID: 16271802 DOI: 10.1016/j.neuint.2005.08.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2005] [Revised: 08/19/2005] [Accepted: 08/19/2005] [Indexed: 11/15/2022]
Abstract
Carbonic anhydrases (CAs) are important enzymes in the central nervous system (CNS), where they participate in regulating cerebrospinal fluid (CSF) secretion, blood-brain barrier and glial cell function. Using RT-PCR we found CA XII mRNA in rat and mouse brain. Cloning of rat CA XII revealed 94% homology with the mouse CA XII. To map the putative functional roles of different CAs, we studied the expression and localization of CA II, CA IV, CA VII, CA-related protein (CA-RP) VIII and CA XII mRNAs in rat brain after kainic acid induced epileptic seizures using Northern blot analysis and in situ hybridization. The expression of CA IV, CA VII and CA-RP VIII was somewhat similar: they were expressed in the cortex, hippocampus and midbrain structures and their expression did not change after the kainic acid treatment. The expression of CA II was concentrated in the white matter structures, which is in line with the preferential expression of CA II in the oligodendrocytes. High levels of CA II mRNA were also detected in the choroid plexus. Surprisingly, CA II was induced 3-12 h after seizures in the vulnerable CA1 region. CA XII was expressed in dentate granule cells, cortex and choroid plexus. Kainic acid stimulated CA XII expression throughout the cortical layer I. The observed hippocampal induction of CA II may indicate a pro-apoptotic and/or epileptogenic role of CA II after prolonged seizures. The physiological significance of the observed cortical induction of CA XII remains obscure. Cytosolic CA II is known to participate in CSF secretion, and the high expression of CA XII in the choroid plexus suggests an analogous role for this membrane-bound isozyme.
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Affiliation(s)
- Piia Halmi
- Institute of Medical Technology, University of Tampere and Tampere University Hospital, 33521 Tampere, Finland
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28
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Vullo D, Voipio J, Innocenti A, Rivera C, Ranki H, Scozzafava A, Kaila K, Supuran CT. Carbonic anhydrase inhibitors. Inhibition of the human cytosolic isozyme VII with aromatic and heterocyclic sulfonamides. Bioorg Med Chem Lett 2005; 15:971-6. [PMID: 15686895 DOI: 10.1016/j.bmcl.2004.12.052] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2004] [Revised: 12/13/2004] [Accepted: 12/16/2004] [Indexed: 12/12/2022]
Abstract
The inhibition of a newly cloned human carbonic anhydrase (CA, EC 4.2.1.1), isozyme VII (hCA VII), has been investigated with a series of aromatic and heterocyclic sulfonamides, including some of the clinically used derivatives (acetazolamide, methazolamide, ethoxzolamide, dichlorophenamide, dorzolamide, brinzolamide and benzolamide), as well as the sulfamate antiepileptic drug topiramate. Inhibition data for the the other physiologically relevant cytosolic isoforms hCA I, hCA II and mCA XIII are also provided for comparison. hCA VII shows a high catalytic activity for the CO(2) hydration reaction, with a k(cat) of 9.5 x 10(5)s(-1) and k(cat)/K(m) of 8.3 x 10(7)M(-1)s(-1) at pH7.5 and 20 degrees C. A very interesting inhibition profile against hCA VII with this series of 32 sulfonamides/sulfamates was observed. hCA VII shows high affinity for all the investigated compounds, with inhibition constants in the range of 0.45-210 nM. Topiramate, ethoxzolamide and benzolamide showed subnanomolar hCA VII inhibitory activity, whereas acetazolamide, methazolamide, dorzolamide and brinzolamide showed K(I)-s in the range of 2.1-3.5 nM. Dichlorophenamide was slightly less active (K(I) of 26.5 nM). A number of heterocyclic or bicyclic aromatic sulfonamides also showed excellent hCA VII inhibitory properties (K(I)-s in the range of 4.3-7.0 nM) whereas many monosubstituted or disubstituted benzenesulfonamides were less active (K(I)-s in the range of 45-89 nM). The least active hCA VII inhibitors were some substituted benzene-1,3-disulfonamides as well as some halogenated sulfanilamides (K(I)-s in the range of 100-210 nM). The inhibition profile of hCA VII is rather different of that of the other cytosolic isozymes, providing thus a possibility for the design of more selective, hCA VII-specific inhibitors. In addition, these data furnish further evidence that hCA VII is the isozyme responsible for the anticonvulsant/antiepileptic activity of sulfonamides and sulfamates.
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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
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Kivelä AJ, Kivelä J, Saarnio J, Parkkila S. Carbonic anhydrases in normal gastrointestinal tract and gastrointestinal tumours. World J Gastroenterol 2005; 11:155-63. [PMID: 15633208 PMCID: PMC4205394 DOI: 10.3748/wjg.v11.i2.155] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Carbonic anhydrases (CAs) catalyse the hydration of CO2 to bicarbonate at physiological pH. This chemical interconversion is crucial since HCO3- is the substrate for several biosynthetic reactions. This review is focused on the distribution and role of CA isoenzymes in both normal and pathological gastrointestinal (GI) tract tissues. It has been known for many years that CAs are widely present in the GI tract and play important roles in several physiological functions such as production of saliva, gastric acid, bile, and pancreatic juice as well as in absorption of salt and water in intestine. New information suggests that these enzymes participate in several processes that were not envisioned earlier. Especially, the recent reports on plasma membrane-bound isoenzymes IX and XII have raised considerable interest since they were reported to participate in cancer invasion and spread. They are induced by tumour hypoxia and may also play a role in von Hippel-Lindau (VHL)-mediated carcinogenesis.
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Affiliation(s)
- Antti-J Kivelä
- Department of Anatomy and Cell Biology, University of Oulu, Finland.
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Affiliation(s)
- R E Tashian
- Department of Human Genetics, University of Michigan Medical School, Medical Science II, M4708, Ann Arbor, MI 48109, USA
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Affiliation(s)
- D Hewett-Emmett
- Human Genetics Center, School of Public Health, University of Texas-Houston Health Science Center, Houston, TX 77225-0334, USA
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Okamoto N, Fujikawa-Adachi K, Nishimori I, Taniuchi K, Onishi S. cDNA sequence of human carbonic anhydrase-related protein, CA-RP X: mRNA expressions of CA-RP X and XI in human brain. BIOCHIMICA ET BIOPHYSICA ACTA 2001; 1518:311-6. [PMID: 11311946 DOI: 10.1016/s0167-4781(01)00193-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A full-length cDNA clone of human carbonic anhydrase-related protein (CA-RP) X was obtained and sequenced. The 2720 bp long cDNA sequence was predicted to encode a 328 amino acid polypeptide. The deduced amino acid sequence showed an overall similarity of 25-57% to other CA isozymes and the highest % similarity to a CA-RP XI. Similar to CA-RP XI, CA-RP X lacked two out of three zinc-liganded histidine residues, suggesting no biological activity of CA. Northern blot analysis demonstrated an approx. 2.8 kb transcript in the human brain and kidney. RNA dot blotting showed significant signals for CA-RP X and XI mRNA expressions in the adult total brain and almost all parts of the central nervous system, but no expression in the fetal brain. These results suggest that CA-RP X and XI play some role in human brain, especially in brain development.
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Affiliation(s)
- N Okamoto
- First Department of Internal Medicine, Kochi Medical School, Nankoku, Kochi 783-8505, Japan
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33
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Abstract
Recently, an increasing number of carbonic anhydrase (CA) isozymes have been discovered in the human pancreas. These isozymes are classified as the CA family with various molecular structures and different subcellular localizations: cytoplasmic CA II, mitochondrial CA VB, secretory CA VI, membrane-bound CA IV, and transmembrane CA IX and XII. However, there is little evidence concerning their pathophysiological roles. Here, we reviewed the expression of CA isozymes in the human pancreas and proposed hypotheses related to their physiological and pathological roles.
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Affiliation(s)
- I Nishimori
- First Department of Internal Medicine, Kochi Medical School, Japan.
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Fujikawa-Adachi K, Nishimori I, Taguchi T, Yuri K, Onishi S. cDNA sequence, mRNA expression, and chromosomal localization of human carbonic anhydrase-related protein, CA-RP XI. BIOCHIMICA ET BIOPHYSICA ACTA 1999; 1431:518-24. [PMID: 10350627 DOI: 10.1016/s0167-4838(99)00067-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A full-length cDNA clone of a human carbonic anhydrase-related protein, CA-RP XI encoded by CA11, was obtained and sequenced. The cDNA sequence was 1475 bp long and predicted to encode a 328-amino acid polypeptide with a molecular mass of 36200 Da. The deduced amino acid sequence of CA-RP XI showed an overall similarity of 42-53% to the active site residues of other active CA isozymes; however, it lacked three zinc-binding histidine residues, raising questions regarding its CA catalytic activity. Northern blot analysis demonstrated strong expression of an approx. 1.5 kb transcript in the human brain, particularly in the cerebellum, cerebral cortex, and putamen. A single copy of the CA11 gene was localized to the human chromosome 19q13.2-3. These results suggest that CA-RP XI plays a general role in the human central nervous system.
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Affiliation(s)
- K Fujikawa-Adachi
- First Department of Internal Medicine, Kochi Medical School, Nankoku, Kochi 783-8505, Japan
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Johansen FE, Bosløven BA, Krajci P, Brandtzaeg P. A composite DNA element in the promoter of the polymeric immunoglobulin receptor regulates its constitutive expression. Eur J Immunol 1998; 28:1161-71. [PMID: 9565355 DOI: 10.1002/(sici)1521-4141(199804)28:04<1161::aid-immu1161>3.0.co;2-s] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The polymeric immunoglobulin receptor (pIgR), which is constitutively expressed on the basolateral surface of secretory epithelial cells, mediates external translocation of polymeric IgA and pentameric IgM (collectively called pIg) to exocrine secretions. A high level of synthesis must be maintained because the receptor is continuously cleaved to release bound secretory component (SC) in secretory IgA and secretory IgM, as well as free SC from unoccupied receptor. We have isolated the promoter of the pIgR gene and identified a short activating region that is required for the expression of pIgR promoter-driven reporter genes. This region contained an E-box and an inverted repeat sequence (IRS). Gel electrophoresis mobility shift assays with nuclear extracts from different pIgR-expressing epithelial cell lines demonstrated proteins that bind independently to both the E-box and the IRS sequence of the pIgR promoter. In addition, a DNA probe that contained both the E-box and the IRS gave rise to a larger complex that could not be competed by either element on its own. Binding was confirmed by DNase I footprinting of the E-box and IRS sequences with nuclear extracts, and by dimethyl sulfide footprinting in living HT-29 epithelial cells. Finally, a mutation in the pIgR promoter that inhibited protein binding to the E-box and the formation of the larger complex, abolished activated transcription from the reporter gene.
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Affiliation(s)
- F E Johansen
- Laboratory of Immunohistochemistry and Immunopathology, Institute of Pathology, University of Oslo, The National Hospital, Rikshospitalet, Norway.
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36
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Abstract
Carbonic anhydrase (CA; carbonate hydro-lyase, EC 4.2.1.1) is a zinc-containing enzyme that catalyzes the reversible hydration of carbon dioxide: CO2+ H2O<-->HCO3(-)+H+. The enzyme is the target for drugs, such as acetazolamide, methazolamide, and dichlorphenamide, for the treatment of glaucoma. There are three evolutionarily unrelated CA families, designated alpha, beta, and gamma. All known CAs from the animal kingdom are of the alpha type. There are seven mammalian CA isozymes with different tissue distributions and intracellular locations, CA I-VII. Crystal structures of human CA I and II, bovine CA III, and murine CA V have been determined. All of them have the same tertiary fold, with a central 10-stranded beta-sheet as the dominating secondary structure element. The zinc ion is located in a cone-shaped cavity and coordinated to three histidyl residues and a solvent molecule. Inhibitors bind at or near the metal center guided by a hydrogen-bonded system comprising Glu-106 and Thr-199. The catalytic mechanism of CA II has been studied in particular detail. It involves an attack of zinc-bound OH- on a CO2 molecule loosely bound in a hydrophobic pocket. The resulting zinc-coordinated HCO3- ion is displaced from the metal ion by H2O. The rate-limiting step is an intramolecular proton transfer from the zinc-bound water molecule to His-64, which serves as a proton shuttle between the metal center and buffer molecules in the reaction medium.
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Affiliation(s)
- S Lindskog
- Department of Biochemistry, Umeå University, Sweden
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Lakkis MM, O'Shea KS, Tashian RE. Differential expression of the carbonic anhydrase genes for CA VII (Car7) and CA-RP VIII (Car8) in mouse brain. J Histochem Cytochem 1997; 45:657-62. [PMID: 9154152 DOI: 10.1177/002215549704500503] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The spatial expression patterns of the two alpha-carbonic anhydrase genes, CA VII and CA-RP VIII (called Car7 and Car8 in the mouse) were examined in the mouse brain by in situ hybridization. These two genes are the most highly conserved evolutionarily among the mammalian alpha-CAs. Both genes showed a similarly wide expression pattern in the brain. In the cerebrum, mRNA expression was detected in the pia, choroid plexus, and neurons of the cortical layer, thalamus, and medial habenulae. A high level of expression appeared in the pyramidal and granular cells of the hippocampus. In the cerebellum, both Car7 and Car8 were transcribed to different degrees in the Purkinje cells, and a lower expression level occurred in the molecular and granular cell layers. Transcription signals for both genes were excluded from the white matter regions.
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Affiliation(s)
- M M Lakkis
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor 48109-0618, USA
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McGowan MH, Neubauer JA, Stolle CA. Characterization of the rat carbonic anhydrase II gene structure: sequence analysis of the 5' flanking region and 3' UTR. Gene X 1997; 186:181-8. [PMID: 9074494 DOI: 10.1016/s0378-1119(96)00700-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The rat carbonic anhydrase II gene was characterized and found to be approximately 15.5 kb in length and to contain 7 exons and 6 introns. All intron/exon junction and branch point sequences conform to consensus sequences, and the overall rat CA II genomic structure appears to be conserved upon comparison with mouse, human, and chicken CA II genes. The putative cis-acting elements within the analyzed 1014 bp 5' flanking region include: TATA box, 4 Sp1 binding sites, 2 AP2 sites and putative tissue-specific beta-globin-like repeat elements. A CpG island of approximately 800 bp was identified that begins about 600 bp upstream of exon 1 and extends about 200 bp into intron 1. In the 3' UTR, two polyadenylation signals (AATAAA) are present, the second of which is believed to be utilized. Northern blot analysis reveals that the 1.7 kb rat CA II mRNA is abundantly expressed in adult male brain and kidney, while negligible amounts are detected in heart and liver.
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Affiliation(s)
- M H McGowan
- National Eye Institute, National Institutes of Health, Bethesda, MD 20892, USA.
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Schwidetzky U, Schleuning WD, Haendler B. Isolation and characterization of the androgen-dependent mouse cysteine-rich secretory protein-1 (CRISP-1) gene. Biochem J 1997; 321 ( Pt 2):325-32. [PMID: 9020862 PMCID: PMC1218072 DOI: 10.1042/bj3210325] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In mice, cysteine-rich secretory protein-1 (CRISP-1) is mainly found in the epididymis and also, to a lesser extent, in the salivary gland of males, where androgens control its expression. We have now isolated and characterized overlapping phage clones covering the entire length of the CRISP-1 gene. DNA sequencing revealed that the gene is organized into eight exons, ranging between 55 and 748 bp in size, and seven introns. All exon-intron junctions conformed to the GT/AG rule established for eukaryotic genes. The intron length, as determined by PCR, varied between 1.05 and 4.0 kb so that the CRISP-1 gene spans over 20 kb of the mouse genome. The transcription-initiation site was determined by primer extension and localized at the expected distance downstream of a consensus TATA box. Approximately 3.7 kb of the CRISP-1 promoter region were isolated and sequenced, and several stretches fitting the androgen-responsive element consensus were found. Those that most resembled the consensus were analysed by electrophoretic mobility-shift assay and found to form specific complexes with the liganded androgen receptor in vitro, but with different affinities. Putative binding elements for the transcription factors Oct, GATA, PEA3, CF1. AP-1 and AP-3 were also found in the promoter region.
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Affiliation(s)
- U Schwidetzky
- Research Laboratories of Schering AG, Berlin, Germany
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40
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Bergenhem N. Chromatographic and electrophoretic methods related to the carbonic anhydrase isozymes. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL APPLICATIONS 1996; 684:289-305. [PMID: 8906478 DOI: 10.1016/0378-4347(95)00566-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
There are three gene families that encode zinc metalloenzymes that catalyze the reversible hydration of CO2. The encoded enzymes are termed carbonic anhydrases (CAs). The CA isozymes have been purified from representatives of all types of organisms. Most CAs are strongly inhibited by aromatic sulfonamides. Several chromatographic and electrophoretic methods have been devised to determine binding constants for sulfonamides to CAs, and these compounds have been extensively used for, often single-step, affinity chromatographic separation of CAs from complex matrixes. The purification of different CA isozymes from different organisms is reviewed, as are methods for detection of CAs during chromatography and electrophoresis.
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Affiliation(s)
- N Bergenhem
- Department of Biological Chemistry, University of Michigan, Abn Arbor 48109-2007, USA
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Parkkila S, Parkkila AK. Carbonic anhydrase in the alimentary tract. Roles of the different isozymes and salivary factors in the maintenance of optimal conditions in the gastrointestinal canal. Scand J Gastroenterol 1996; 31:305-17. [PMID: 8726296 DOI: 10.3109/00365529609006403] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- S Parkkila
- Laboratory of Oulu University Hospital, Finland
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42
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Ogawa Y, Toyosawa S, Inagaki T, Hong SS, Ijuhin N. Carbonic anhydrase isozyme VI in rat lacrimal gland. Histochem Cell Biol 1995; 103:387-94. [PMID: 7641071 DOI: 10.1007/bf01457814] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Using monoclonal antibody specific to rat carbonic anhydrase isozyme VI (CA VI), the isozyme was localized in the lacrimal gland. A minority of acini (less than 10% of the total) contained a few immunoreactive acinar cells. Enzyme histochemistry indicated that the CA VI-positive cells were the only cells possessing CA in the lacrimal acini. In the acinar cells, the reaction product for CA VI was distributed in the secretory granules and cytosol between secretory granules. Except for mitochondrial enzyme (CA V) activity, the intracellular distribution of enzyme activity was similar to that of CA VI immunoreactivity, suggesting that rat lacrimal acinar cells contain only CA VI and CA V. CA VI in the secretory granules was discharged into the acinar lumen and is considered to carry out its function on the surface of the conjunctiva and cornea. The cytosolic CA VI may function in situ and be involved in electrolyte and water secretion by the acinar cells. Polyclonal antibody to rat erythrocyte CA (CA I and CA II) stained only the interlobular ducts. In contrast, all the ductal elements exhibited CA enzyme activity. This discrepancy between immunohistochemistry and enzyme histochemistry suggests the presence of CA isozyme(s) other than CA I, CA II and CA VI in the lacrimal duct.
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Affiliation(s)
- Y Ogawa
- Department of Oral Pathology, Osaka University Faculty of Dentistry, Japan
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Olson NJ, Massé T, Suzuki T, Chen J, Alam D, Kelly PT. Functional identification of the promoter for the gene encoding the alpha subunit of calcium/calmodulin-dependent protein kinase II. Proc Natl Acad Sci U S A 1995; 92:1659-63. [PMID: 7878035 PMCID: PMC42579 DOI: 10.1073/pnas.92.5.1659] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
To examine the expression of the alpha subunit of calcium/calmodulin-dependent protein kinase II, various 5' flanking genomic sequences were inserted into a chloramphenicol acetyltransferase (CAT) reporter plasmid and CAT enzyme activities were analyzed in transfected NB2a neuroblastoma cells and mRNA transcription was analyzed by nuclease protection assays. A core promoter was identified which contained an essential TATA element located 162 nt 5' to the transcription start site. Sequences 3' to the transcription start site, as well as 5' to the TATA element, increased levels of CAT activity in transfected cells. The alpha-subunit gene promoter displayed higher CAT activities, relative to a simian virus 40 promoter, in transfected neuronal cell lines than in nonneuronal cell lines. Results also suggested that sequence surrounding the natural alpha-gene transcription initiation site may be important for targeting transcription initiation 162 nt downstream of its TATA element.
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Affiliation(s)
- N J Olson
- Department of Neurobiology and Anatomy, University of Texas, Houston 77225
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44
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Nagao Y, Platero JS, Waheed A, Sly WS. Human mitochondrial carbonic anhydrase: cDNA cloning, expression, subcellular localization, and mapping to chromosome 16. Proc Natl Acad Sci U S A 1993; 90:7623-7. [PMID: 8356065 PMCID: PMC47194 DOI: 10.1073/pnas.90.16.7623] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
A full-length cDNA clone encoding human mitochondrial carbonic anhydrase (CA), CA V, was isolated from a human liver cDNA library. The 1123-bp cDNA includes a 55-bp 5' untranslated region, a 915-bp open reading frame, and a 153-bp 3' untranslated region. Expression of the cDNA in COS cells produced active enzyme. The 34-kDa precursor and 30-kDa mature form of CA V were identified on Western blots of COS-cell homogenates by a CA V-specific antibody raised to a synthetic peptide corresponding to the C-terminal 17 aa of CA V. Both 34-kDa and 30-kDa bands were also present in mitochondria isolated from transfected COS cells, whereas only the 30-kDa band was present in mitochondria isolated from normal human liver. The N-terminal sequence determined directly on the 30-kDa soluble CA purified from transfected COS cells indicated that processing of the precursor to mature human CA V involves removal of a 38-aa mitochondrial leader sequence. The 267-aa sequence deduced for mature human CA V shows 30-49% similarity to amino acid sequences of previously characterized human CAs (CA I-CA VII) and 76% similarity to the corresponding amino acid sequence deduced from the mouse cDNA. PCR analysis of DNAs from human-rodent somatic cell hybrids localized the gene for CA V to human chromosome 16, the same chromosome to which CA VII has previously been mapped.
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Affiliation(s)
- Y Nagao
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St. Louis University School of Medicine, MO 63104
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45
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Callen DF, Doggett NA, Stallings RL, Chen LZ, Whitmore SA, Lane SA, Nancarrow JK, Apostolou S, Thompson AD, Lapsys NM. High-resolution cytogenetic-based physical map of human chromosome 16. Genomics 1992; 13:1178-85. [PMID: 1505951 DOI: 10.1016/0888-7543(92)90035-q] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A panel of 54 mouse/human somatic cell hybrids, each possessing various portions of chromosome 16, was constructed; 46 were constructed from naturally occurring rearrangements of this chromosome, which were ascertained in clinical cytogenetics laboratories, and a further 8 from rearrangements spontaneously arising during tissue culture. By mapping 235 DNA markers to this panel of hybrids, and in relation to four fragile sites and the centromere, a cytogenetic-based physical map of chromosome 16 with an average resolution of 1.6 Mb was generated. Included are 66 DNA markers that have been typed in the CEPH pedigrees, and these will allow the construction of a detailed correlation of the cytogenetic-based physical map and the genetic map of this chromosome. Cosmids from chromosome 16 that have been assembled into contigs by use of repetitive sequence fingerprinting have been mapped to the hybrid panel. Approximately 11% of the euchromatin is now both represented in such contigs and located on the cytogenetic-based physical map. This high-resolution cytogenetic-based physical map of chromosome 16 will provide the basis for the cloning of genetically mapped disease genes, genes disrupted in cytogenetic rearrangements that have produced abnormal phenotypes, and cancer breakpoints.
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Affiliation(s)
- D F Callen
- Department of Cytogenetics and Molecular Genetics, Adelaide Children's Hospital, Australia
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46
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Okuyama T, Sato S, Zhu XL, Waheed A, Sly WS. Human carbonic anhydrase IV: cDNA cloning, sequence comparison, and expression in COS cell membranes. Proc Natl Acad Sci U S A 1992; 89:1315-9. [PMID: 1311094 PMCID: PMC48440 DOI: 10.1073/pnas.89.4.1315] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
We have isolated a full-length cDNA for human carbonic anhydrase IV (CA IV) from a lambda gt10 human kidney cDNA library. The 1105-base-pair (bp) cDNA contains a 47-bp 5' untranslated region, a 936-bp open reading frame, and a 122-bp 3' untranslated region. The deduced amino acid sequence is colinear with the N-terminal sequence and the sequence of several tryptic peptides of human lung CA IV. It includes an 18-amino acid signal sequence, a 260-amino acid region that shows 30-36% similarity with the 29-kDa cytoplasmic CAs (CA I, CA II, and CA III), and an additional 27-amino acid C-terminal sequence that ends in a 21-amino acid hydrophobic domain. Of the 17 "active site" residues that are highly conserved in other human CAs, 16 are also present in CA IV. Expression of the cDNA in COS cells produced a 35-kDa enzyme that was membrane associated, resistant to inactivation by SDS, contained no carbohydrate, and reacted on Western blots with antiserum to the 35-kDa CA IV from human lung. Treatment of membranes from transfected COS cells with phosphatidylinositol-specific phospholipase C released 20-30% of the expressed enzyme from membranes, indicating that at least 20-30% of the expressed enzyme was anchored to membranes by a glycosyl-phosphatidylinositol linkage.
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Affiliation(s)
- T Okuyama
- Edward A. Doisy Department of Biochemistry and Molecular Biology, St. Louis University School of Medicine, MO 63104
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47
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Affiliation(s)
- R E Tashian
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor 48109
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