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Aureliano M, Gumerova NI, Sciortino G, Garribba E, McLauchlan CC, Rompel A, Crans DC. Polyoxidovanadates' interactions with proteins: An overview. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214344] [Citation(s) in RCA: 52] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Bâlici Ș, Rusu D, Páll E, Filip M, Chirilă F, Nicula GZ, Vică ML, Ungur R, Matei HV, Fiț NI. In Vitro Antibacterial Susceptibility of Different Pathogens to Thirty Nano-Polyoxometalates. Pharmaceuticals (Basel) 2021; 15:ph15010033. [PMID: 35056090 PMCID: PMC8777622 DOI: 10.3390/ph15010033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/21/2021] [Accepted: 12/24/2021] [Indexed: 11/16/2022] Open
Abstract
Due to their unique properties, nano-polyoxometalates (POMs) can be alternative chemotherapeutic agents instrumental in designing new antibiotics. In this research, we synthesized and characterized “smart” nanocompounds and validated their antibacterial effects in order to formulate and implement potential new drugs. We characterized thirty POMs in terms of antibacterial activity–structure relationship. The antibacterial effects of these compounds are directly dependent upon their structure and the type of bacterial strain tested. We identified three POMs that presented sound antibacterial activity against S. aureus, B. cereus, E. coli, S. enteritidis and P. aeruginosa strains. A newly synthesized compound K6[(VO)SiMo2W9O39]·11H2O (POM 7) presented antibacterial activity only against S. aureus (ATCC 6538P). Twelve POMs exerted antibacterial effects against both Gram-positive and Gram-negative strains. Only one POM (a cluster derivatized with organometallic fragments) exhibited a stronger effect compared to amoxicillin. New studies in terms of selectivity and specificity are required to clarify these extremely important aspects needed to be considered in drug design.
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Affiliation(s)
- Ștefana Bâlici
- Department of Cell and Molecular Biology, Faculty of Medicine, “Iuliu Hațieganu” University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania; (Ș.B.); (G.Z.N.); (H.V.M.)
| | - Dan Rusu
- Department of Physical-Chemistry, Faculty of Pharmacy, “Iuliu Hațieganu” University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania;
| | - Emőke Páll
- Department of Reproduction, Obstetrics and Veterinary Gynecology, Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, 400372 Cluj-Napoca, Romania;
| | - Miuța Filip
- Analytical and Environmental Chemistry Laboratory, “Raluca Ripan” Institute for Research in Chemistry, “Babeș-Bolyai” University, 400294 Cluj-Napoca, Romania;
| | - Flore Chirilă
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (F.C.); (N.I.F.)
| | - Gheorghe Zsolt Nicula
- Department of Cell and Molecular Biology, Faculty of Medicine, “Iuliu Hațieganu” University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania; (Ș.B.); (G.Z.N.); (H.V.M.)
| | - Mihaela Laura Vică
- Department of Cell and Molecular Biology, Faculty of Medicine, “Iuliu Hațieganu” University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania; (Ș.B.); (G.Z.N.); (H.V.M.)
- Correspondence:
| | - Rodica Ungur
- Department of Medical Rehabilitation, Faculty of Medicine, “Iuliu Hațieganu” University of Medicine and Pharmacy, 400347 Cluj-Napoca, Romania;
| | - Horea Vladi Matei
- Department of Cell and Molecular Biology, Faculty of Medicine, “Iuliu Hațieganu” University of Medicine and Pharmacy, 400349 Cluj-Napoca, Romania; (Ș.B.); (G.Z.N.); (H.V.M.)
| | - Nicodim Iosif Fiț
- Department of Microbiology and Immunology, Faculty of Veterinary Medicine, University of Agricultural Science and Veterinary Medicine, 400372 Cluj-Napoca, Romania; (F.C.); (N.I.F.)
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Gumerova NI, Rompel A. Interweaving Disciplines to Advance Chemistry: Applying Polyoxometalates in Biology. Inorg Chem 2021; 60:6109-6114. [PMID: 33787237 PMCID: PMC8154434 DOI: 10.1021/acs.inorgchem.1c00125] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
![]()
This Viewpoint brings
awareness of the challenges and subsequent
breakthroughs at the intersection of different disciplines, illustrated
by the example of the influence biological entities exerted on a huge
class of inorganic coordination compounds, called polyoxometalates
(POMs). We highlight the possible effects of biological systems on
POMs that need to be considered, thereby emphasizing the depth and
complexity of interdisciplinary work. We map POMs’ structural,
electrochemical, and stability properties in the presence of biomolecules
and stress the potential challenges related to inorganic coordination
chemistry carried out in biological systems. This Viewpoint shows
that new chemistry is available at the intersections between disciplines
and aims to guide the community toward a discussion about current
as well as future trends in truly interdisciplinary work. We discuss the investigation of polyoxometalates in biological
systems as one future direction of chemistry. Highly interesting,
new, and sometimes spectacular findings and applications can be obtained
from correctly carried out interdisciplinary research. In this Viewpoint,
the challenges of truly interdisciplinary work and concepts for overcoming
boundaries while working on intertwining disciplines are discussed.
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Affiliation(s)
- Nadiia I Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, Wien 1090, Austria
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, Wien 1090, Austria
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Kashyap N, Das S, Borah R. Solvent responsive self-separation behaviour of Brønsted acidic ionic liquid-polyoxometalate hybrid catalysts on H2O2 mediated oxidation of alcohols. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114993] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fang Y, Liu T, Xing C, Chang J, Li M. A blend hydrogel based on polyoxometalate for long-term and repeatedly localized antibacterial application study. Int J Pharm 2020; 591:119990. [PMID: 33075467 DOI: 10.1016/j.ijpharm.2020.119990] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 09/30/2020] [Accepted: 10/13/2020] [Indexed: 01/15/2023]
Abstract
Herein, a polyoxometalate (POM)-based blend hydrogel system was in situ constructed by incorporating cetyltrimethylammoniumbromide (CTAB)-encapsulated POM cationic micelles to bare hydrogel matrixes followed by copolymerization of multivalent crosslinking groups. It was demonstrated that the fabricated blend hydrogel possessed tunable physicochemical properties, good swelling behavior (maximum swelling rate of 229% in buffer solution of pH 8.0), excellent local action and sustained release of POM component (release ratio achieved nearly 100% at the time of 120 min). Antibacterial activity study revealed that the introduction of POM greatly improved the bioavailability of itself, namely, leading to a more effective enhancement of therapeutic effects (survival ratio of both strains less than 5%). Besides, bactericidal rates (ca. 51%) were achieved even after six runs repeated, thereby verifying the biological application potential of this material. Finally, the practical application potentials were investigated and future prospects in relevant research areas were forecasted.
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Affiliation(s)
- Yan Fang
- Henan Key Laboratory of Polyoxometalates, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China
| | - Taiyu Liu
- School of Pharmaceutical Sciences, Nanjing Tech University, No.30 South Puzhu Road, Nanjing 211816, PR China
| | - Cuili Xing
- Henan Key Laboratory of Polyoxometalates, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China
| | - Jiangnan Chang
- Henan Key Laboratory of Polyoxometalates, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China
| | - Mingxue Li
- Henan Key Laboratory of Polyoxometalates, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, PR China.
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Reversible redox activity of {Mo72Fe30} nano-polyoxometalate cluster in three crystalline forms. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Čolović MB, Lacković M, Lalatović J, Mougharbel AS, Kortz U, Krstić DZ. Polyoxometalates in Biomedicine: Update and Overview. Curr Med Chem 2020; 27:362-379. [PMID: 31453779 DOI: 10.2174/0929867326666190827153532] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/30/2019] [Accepted: 08/20/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND Polyoxometalates (POMs) are negatively charged metal-oxo clusters of early transition metal ions in high oxidation states (e.g., WVI, MoVI, VV). POMs are of interest in the fields of catalysis, electronics, magnetic materials and nanotechnology. Moreover, POMs were shown to exhibit biological activities in vitro and in vivo, such as antitumor, antimicrobial, and antidiabetic. METHODS The literature search for this peer-reviewed article was performed using PubMed and Scopus databases with the help of appropriate keywords. RESULTS This review gives a comprehensive overview of recent studies regarding biological activities of polyoxometalates, and their biomedical applications as promising anti-viral, anti-bacterial, anti-tumor, and anti-diabetic agents. Additionally, their putative mechanisms of action and molecular targets are particularly considered. CONCLUSION Although a wide range of biological activities of Polyoxometalates (POMs) has been reported, they are to the best of our knowledge not close to a clinical trial or a final application in the treatment of diabetes or infectious and malignant diseases. Accordingly, further studies should be directed towards determining the mechanism of POM biological actions, which would enable fine-tuning at the molecular level, and consequently efficient action towards biological targets and as low toxicity as possible. Furthermore, biomedical studies should be performed on solutionstable POMs employing physiological conditions and concentrations.
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Affiliation(s)
- Mirjana B Čolović
- Department of Physical Chemistry, "Vinca" Institute of Nuclear Sciences, University of Belgrade, Belgrade 11,000, Serbia
| | - Milan Lacković
- University Clinical Hospital Center dr Dragisa Misovic-Dedinje, Belgrade 11,000, Serbia
| | - Jovana Lalatović
- Faculty of Medicine, University of Belgrade, Belgrade 11,000, Serbia
| | - Ali S Mougharbel
- Department of Life Sciences and Chemistry, Jacobs University, Bremen, Germany
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University, Bremen, Germany
| | - Danijela Z Krstić
- Institute of Medical Chemistry, Faculty of Medicine, University of Belgrade, Belgrade 11,000, Serbia
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Joshi A, Gupta R, Singh B, Sharma D, Singh M. Effective inhibitory activity against MCF-7, A549 and HepG2 cancer cells by a phosphomolybdate based hybrid solid. Dalton Trans 2020; 49:7069-7077. [DOI: 10.1039/d0dt01042a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A novel P2Mo5 cluster based hybrid solid [{4,4′-H2bpy}{4,4′-Hbpy}2{H2P2Mo5O23}]·5H2O with effective anti-proliferation activity against MCF-7, HepG2 and A549 cancer cells comparable with a routinely used chemotherapeutic agent, methotrexate (MTX).
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Affiliation(s)
- Arti Joshi
- Institute of Nano Science and Technology
- Mohali-160062
- India
| | - Ruby Gupta
- Institute of Nano Science and Technology
- Mohali-160062
- India
| | - Bharti Singh
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | - Deepika Sharma
- Institute of Nano Science and Technology
- Mohali-160062
- India
| | - Monika Singh
- Institute of Nano Science and Technology
- Mohali-160062
- India
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Dinčić M, Čolović MB, Sarić Matutinović M, Ćetković M, Kravić Stevović T, Mougharbel AS, Todorović J, Ignjatović S, Radosavljević B, Milisavljević M, Kortz U, Krstić DZ. In vivo toxicity evaluation of two polyoxotungstates with potential antidiabetic activity using Wistar rats as a model system. RSC Adv 2020; 10:2846-2855. [PMID: 35496114 PMCID: PMC9048772 DOI: 10.1039/c9ra09790b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 01/02/2020] [Indexed: 01/22/2023] Open
Abstract
Study of the in vivo hypoglycemic effect, hepatotoxicity and nephrotoxicity of a donut-shaped polyanion salt (NH4)14[Na@P5W30O110]·31H2O {NaP5W30} and its Ag-containing derivative K14[Ag@P5W30O110]·22H2O·6KCl {AgP5W30}.
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Affiliation(s)
- Marko Dinčić
- Institute of Pathological Physiology
- Faculty of Medicine
- University of Belgrade
- Serbia
| | - Mirjana B. Čolović
- Department of Physical Chemistry
- “Vinča” Institute of Nuclear Sciences
- University of Belgrade
- Serbia
| | - Marija Sarić Matutinović
- Department for Medical Biochemistry
- Laboratory for Medical Biochemical Analysis
- Faculty of Pharmacy
- University of Belgrade
- Serbia
| | - Mila Ćetković
- Institute of Histology and Embryology
- Faculty of Medicine
- University of Belgrade
- Serbia
| | | | - Ali S. Mougharbel
- Department of Life Sciences and Chemistry
- Jacobs University
- 28759 Bremen
- Germany
| | - Jasna Todorović
- Institute of Pathological Physiology
- Faculty of Medicine
- University of Belgrade
- Serbia
| | - Svetlana Ignjatović
- Department for Medical Biochemistry
- Laboratory for Medical Biochemical Analysis
- Faculty of Pharmacy
- University of Belgrade
- Serbia
| | | | | | - Ulrich Kortz
- Department of Life Sciences and Chemistry
- Jacobs University
- 28759 Bremen
- Germany
| | - Danijela Z. Krstić
- Institute of Medical Chemistry
- Faculty of Medicine
- University of Belgrade
- Belgrade
- Serbia
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Hu JJ, Wang L, Chen BN, Chi GX, Zhao MJ, Li Y. Transition Metal Substituted Polyoxometalates as α-Glucosidase Inhibitors. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900306] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jing-Jing Hu
- College of Food and Biological Engineering; Jimei University; 361021 Xiamen P.R. China
| | - Li Wang
- College of Food and Biological Engineering; Jimei University; 361021 Xiamen P.R. China
| | | | - Guo-Xiang Chi
- College of Food and Biological Engineering; Jimei University; 361021 Xiamen P.R. China
| | - Mei-Juan Zhao
- College of Food and Biological Engineering; Jimei University; 361021 Xiamen P.R. China
| | - Yue Li
- College of Food and Biological Engineering; Jimei University; 361021 Xiamen P.R. China
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11
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Chitosan nanogels as nanocarriers of polyoxometalates for breast cancer therapies. Carbohydr Polym 2019; 213:159-167. [DOI: 10.1016/j.carbpol.2019.02.091] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/02/2019] [Accepted: 02/25/2019] [Indexed: 12/27/2022]
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12
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Jia SF, Hao XL, Wen YZ, Zhang Y. Synthesis, cytotoxicity, apoptosis and cell cycle arrest of a monoruthenium(II)-substituted Dawson polyoxotungstate. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1566540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Shi-Fang Jia
- School of Chemical and Biological Engineering, Tai Yuan University of Science and Technology, Taiyuan, China
| | - Xiu-Li Hao
- School of Chemical and Biological Engineering, Tai Yuan University of Science and Technology, Taiyuan, China
| | - Yan-Zhen Wen
- School of Chemical and Biological Engineering, Tai Yuan University of Science and Technology, Taiyuan, China
| | - Yan Zhang
- School of Chemical and Biological Engineering, Tai Yuan University of Science and Technology, Taiyuan, China
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Gu J, Zhang L, Yuan X, Chen YG, Gao X, Li D. Synthesis and Antibacterial Activity of Polyoxometalates with Different Structures. Bioinorg Chem Appl 2018; 2018:9342326. [PMID: 30627139 PMCID: PMC6305049 DOI: 10.1155/2018/9342326] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Accepted: 09/13/2018] [Indexed: 11/24/2022] Open
Abstract
A new inorganic-organic hybrid compound, [{Cu(phen)2}2(H4W12O40)], was synthesized, and its crystal structure was determined. The Keggin anion H4W12O40 4- was grafted with two coordination units {Cu(phen)2}, forming an electrically neutral molecule. The antibacterial activity of several polyoxometalate compounds with different anionic structures including the new compound was studied. The results show that the compound 1 can inhibit the growth of Enterococcus faecalis FA2 strains and that antibacterial activity of the polyoxometalate compounds is dependent with component elements of POM but is less relative with the anion structures.
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Affiliation(s)
- Jingmin Gu
- College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Lei Zhang
- Animal Science and Technology College, Jilin Agricultural University, Changchun 130117, China
| | - Xiaofeng Yuan
- Department of Pediatrics, Affiliated Hospital of the Changchun University of Chinese Medicine, Changchun 130021, China
| | - Ya-Guang Chen
- Key Laboratory of Polyoxometalates Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xiuzhu Gao
- Department of Hepatology, The First Hospital, Jilin University, Changchun 130021, China
| | - Dong Li
- Department of Hepatology, The First Hospital, Jilin University, Changchun 130021, China
- Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
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Gumerova NI, Al-Sayed E, Krivosudský L, Čipčić-Paljetak H, Verbanac D, Rompel A. Antibacterial Activity of Polyoxometalates Against Moraxella catarrhalis. Front Chem 2018; 6:336. [PMID: 30155460 PMCID: PMC6102686 DOI: 10.3389/fchem.2018.00336] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/19/2018] [Indexed: 01/02/2023] Open
Abstract
The antibacterial activity of 29 different polyoxometalates (POMs) against Moraxella catarrhalis was investigated by determination of the minimum inhibitory concentration (MIC). The Preyssler type polyoxotungstate (POT) [NaP5W30O110]14− demonstrates the highest activity against M. catarrhalis (MIC = 1 μg/ml) among all tested POMs. Moreover, we show that the Dawson type based anions, [P2W18O62]6−, [(P2O7)Mo18O54]4−, [As2Mo18O62]6−, [H3P2W15V3O62]6−, and [AsW18O60]7− are selective on M. catarrhalis (MIC range of 2-8 μg/ml). Among the six tested Keggin type based POTs ([PW12O40]3−, [H2PCoW11O40]5−, [H2CoTiW11O40]6−, [SiW10O36]8−, [SbW9O33]9−, [AsW9O33]9−), only the mono-substituted [H2CoTiW11O40]6− showed MIC value comparable to those of the Dawson type group. Polyoxovanadates (POVs) and Anderson type POMs were inactive against M. catarrhalis within the tested concentration range (1-256 μg/ml). Four Dawson type POMs [P2W18O62]6−, [(P2O7)Mo18O54]4−, [As2Mo18O62]6−, [H3P2W15V3O62]6− and the Preyssler POT [NaP5W30O110]14− showed promising antibacterial activity against M. catarrhalis (MICs < 8 μg/ml) and were therefore tested against three additional bacteria, namely S. aureus, E. faecalis, and E. coli. The most potent antibacterial agent was [NaP5W30O110]14−, exhibiting the lowest MIC values of 16 μg/ml against S. aureus and 8 μg/ml against E. faecalis. The three most active compounds ([NaP5W30O110]14−, [P2W18O62]6−, and [H3P2W15V3O62]6−) show bacteriostatic effects in killing kinetics study against M. catarrhalis. We demonstrate, that POM activity is mainly depending on composition, shape, and size, but in the case of medium-size POTs (charge is more than −12 and number of addenda atoms is not being higher than 22) its activity correlates with the total net charge.
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Affiliation(s)
- Nadiia I Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Wien, Austria
| | - Emir Al-Sayed
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Wien, Austria
| | - Lukáš Krivosudský
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Wien, Austria
| | - Hana Čipčić-Paljetak
- Center for Translational and Clinical Research, Croatian Center of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Donatella Verbanac
- Center for Translational and Clinical Research, Croatian Center of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Wien, Austria
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Croce M, Conti S, Maake C, Patzke GR. Nanocomposites of Polyoxometalates and Chitosan-Based Polymers as Tuneable Anticancer Agents. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800268] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Matteo Croce
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Simona Conti
- Institute of Anatomy; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Caroline Maake
- Institute of Anatomy; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Greta R. Patzke
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
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16
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Sartzi H, Long DL, Sproules S, Cronin L, Miras HN. Directed Self-Assembly, Symmetry Breaking, and Electronic Modulation of Metal Oxide Clusters by Pyramidal Heteroanions. Chemistry 2018; 24:4399-4411. [PMID: 29315925 DOI: 10.1002/chem.201705711] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Indexed: 11/06/2022]
Abstract
Mixed valence/metal polyoxometalate (POM) clusters are one of the most interesting host species because they show the ability to incorporate a wide range of heteroatoms of various charges and geometries. We report herein the incorporation of pyramidal EO32- heteroanions (E=PH, S, Se, Te) that are responsible not only for directing the templated assembly of a family of mixed-metal POMs but also for the symmetry-breaking of the traditional Dawson architecture and modulation of the electronic characteristics of the cluster's shell. The isolated family of POMs consists of four members: (Me2 NH2 )5 Na2 [Mo11 V7 O52 (HPO3 )]⋅MeOH⋅5 H2 O (1), (NH4 )7 [Mo11 V7 O52 (SO3 )]⋅12 H2 O (2), K7 [Mo11 V7 O52 (SeO3 )] ⋅31 H2 O (3), and (Me2 NH2 )6 Na[Mo11 V7 O52 (TeO3 )]⋅15 H2 O (4), and were characterized by X-ray structural analysis, electrospray ionization mass spectrometry (ESI-MS), thermogravimetric analysis (TGA), UV/Vis, FTIR, elemental analysis, flame atomic absorption spectroscopy (FAAS), and inductively coupled plasma optical emission spectroscopy (ICP-OES). Cyclic voltammetry (CV) and electron paramagnetic resonance (EPR) spectroscopic studies in concert with density functional theoretical (DFT) calculations have been used to elucidate the effect of the heteroatom on the electronic properties of the cluster.
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Affiliation(s)
- Harikleia Sartzi
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - De-Liang Long
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - Stephen Sproules
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - Leroy Cronin
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - Haralampos N Miras
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
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Shah Idil A, Donaldson N. The use of tungsten as a chronically implanted material. J Neural Eng 2018; 15:021006. [DOI: 10.1088/1741-2552/aaa502] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Bijelic A, Aureliano M, Rompel A. The antibacterial activity of polyoxometalates: structures, antibiotic effects and future perspectives. Chem Commun (Camb) 2018; 54:1153-1169. [PMID: 29355262 PMCID: PMC5804480 DOI: 10.1039/c7cc07549a] [Citation(s) in RCA: 229] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 01/02/2018] [Indexed: 02/05/2023]
Abstract
Polyoxometalates (POMs) are, mostly anionic, metal oxide compounds that span a wide range of tunable physical and chemical features rendering them very interesting for biological purposes, an continuously emerging but little explored field. Due to their biological and biochemical effects, including antitumor, -viral and -bacterial properties, POMs and POM-based systems are considered as promising future metallodrugs. In this article, we focus on the antibacterial activity of POMs and their therapeutic potential in the battle against bacteria and their increasing resistance against pharmaceuticals. Recent advances in the synthesis of POMs are highlighted, with emphasis on the development and properties of biologically active POM-based hybrid and nanocomposite structures. By analysing the antibacterial activity and structure of POMs, putative mode of actions are provided, including potential targets for POM-protein interactions, and a structure-activity-relationship was established for a series of POMs against two bacteria, namely Helicobacter pylori and Streptococcus pneumoniae.
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Affiliation(s)
- Aleksandar Bijelic
- Universität Wien , Fakultät für Chemie , Institut für Biophysikalische Chemie , Althanstraße 14 , 1090 Wien , Austria . ; http://www.bpc.univie.ac.at
| | - Manuel Aureliano
- CCMar , FCT , Faculdade de Ciências e Tecnologia , Universidade do Algarve , 8000-139 Faro , Portugal
| | - Annette Rompel
- Universität Wien , Fakultät für Chemie , Institut für Biophysikalische Chemie , Althanstraße 14 , 1090 Wien , Austria . ; http://www.bpc.univie.ac.at
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19
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Pimenta-dos-Reis G, Torres EJL, Quintana PG, Vidal LO, dos Santos BAF, Lin CS, Heise N, Persechini PM, Schachter J. POM-1 inhibits P2 receptors and exhibits anti-inflammatory effects in macrophages. Purinergic Signal 2017; 13:611-627. [PMID: 29022161 PMCID: PMC5714851 DOI: 10.1007/s11302-017-9588-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Accepted: 10/02/2017] [Indexed: 10/18/2022] Open
Abstract
Extracellular nucleotides can modulate the immunological response by activating purinergic receptors (P2Rs) on the cell surface of macrophages, dendritic, and other immune cells. In particular, the activation of P2X7R can induce release of cytokines and cell death as well as the uptake of large molecules through the cell membrane by a mechanism still poorly understood. Polyoxotungstate-1 (POM-1) has been proposed as a potent inhibitor of ecto-nucleotidases, enzymes that hydrolyze extracellular nucleotides, regulating the activity of P2Rs. However, the potential impact of POM-1 on P2Rs has not been evaluated. Here, we used fluorescent dye uptake, cytoplasmic free Ca2+ concentration measurement, patch-clamp recordings, scanning electron microscopy, and quantification of inflammatory mediators to investigate the effects of POM-1 on P2Rs of murine macrophages. We observed that POM-1 blocks the P2YR-dependent cytoplasmic Ca2+ increase and has partial effects on the cytoplasmic Ca2+, increasing dependence on P2XRs. POM-1 can inhibit the events related with ATP-dependent inflammasome activation, anionic dye uptake, and also the opening of large conductance channels, which are associated with P2X7R-dependent pannexin-1 activation. On the other hand, this compound has no effects on cationic fluorescent dye uptake, apoptosis, and bleb formation, also dependent on P2X7R. Moreover, POM-1 can be considered an anti-inflammatory compound, because it prevents TNF-α and nitric oxide release from LPS-treated macrophages.
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Affiliation(s)
- Gabriela Pimenta-dos-Reis
- Instituto de Biofísica Carlos Chagas Filho da Universidade Federal de Rio de Janeiro, Rio de Janeiro, Brazil
| | - Eduardo José Lopes Torres
- Laboratório de Helmintologia Romero Lascasas Porto, Departamento de Microbiologia, Imunologia e Parasitologia. Faculdade de Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Paula Gabriela Quintana
- Instituto de Biofísica Carlos Chagas Filho da Universidade Federal de Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lincon Onorio Vidal
- Instituto de Biofísica Carlos Chagas Filho da Universidade Federal de Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Chuan-Sheng Lin
- Microbiota Research Center, Chang Gung University, Taoyuan, Taiwan
- Center for Molecular and Clinical Immunology, Chang Gung University, Taoyuan, Taiwan
| | - Norton Heise
- Instituto de Biofísica Carlos Chagas Filho da Universidade Federal de Rio de Janeiro, Rio de Janeiro, Brazil
| | - Pedro Muanis Persechini
- Instituto de Biofísica Carlos Chagas Filho da Universidade Federal de Rio de Janeiro, Rio de Janeiro, Brazil
| | - Julieta Schachter
- Microbiota Research Center, Chang Gung University, Taoyuan, Taiwan
- Polo Xerem, Universidade Federal de Rio de Janeiro, Estrada de Xerém No. 27, Xerém, Duque de Caxias, Rio de Janeiro, 25245-390 Brazil
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20
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Čolović MB, Medić B, Ćetković M, Kravić Stevović T, Stojanović M, Ayass WW, Mougharbel AS, Radenković M, Prostran M, Kortz U, Krstić DZ. Toxicity evaluation of two polyoxotungstates with anti-acetylcholinesterase activity. Toxicol Appl Pharmacol 2017; 333:68-75. [PMID: 28830837 DOI: 10.1016/j.taap.2017.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 08/16/2017] [Accepted: 08/18/2017] [Indexed: 10/19/2022]
Abstract
A toxicity evaluation of two Keggin-type heteropolytungstates, K7[Ti2PW10O40]·6H2O and K6H[SiV3W9O40]·3H2O, with different inhibitory potencies toward acetylcholinesterase activity (IC50 values of 1.04×10-6 and 4.80×10-4mol/L, respectively) was performed. Wistar albino rats were orally treated with single doses (5 and 50mg/kg) of both investigated compounds. The biochemical parameters of renal (serum urea and creatinine) and liver function (direct and total bilirubin, alanine transaminase, and aspartate aminotransferase) were determined after 24h and 14days. A histopathological analysis of liver tissue was carried out 14days after the polyoxotungstate administration. Both applied doses of the investigated compounds did not induce statistically significant alterations of the renal function markers. However, the polyoxotungstate treatment caused an increase in the activities of serum alanine transaminase and aspartate aminotransferase in a time- and concentration-dependent manner, although statistically significant changes in bilirubin concentrations were not observed. Furthermore, the detected hepatotoxic effect was confirmed by histhopathological analysis that suggested some reversible liver tissue damage two weeks after the treatment, especially in the case of K6H[SiV3W9O40]·3H2O. Accordingly, the toxicity of these two polyoxotungstates with anti-acetylcholinesterase effect cannot be considered as a severe one, but their potential clinical application would require a more complex toxicological study.
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Affiliation(s)
- Mirjana B Čolović
- Department of Physical Chemistry, "Vinča" Institute of Nuclear Sciences, University of Belgrade, Serbia
| | - Branislava Medić
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Serbia
| | - Mila Ćetković
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Serbia
| | - Tamara Kravić Stevović
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Serbia
| | - Marko Stojanović
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Serbia
| | - Wassim W Ayass
- Department of Life Sciences and Chemistry, Jacobs University, Bremen, Germany
| | - Ali S Mougharbel
- Department of Life Sciences and Chemistry, Jacobs University, Bremen, Germany
| | - Miroslav Radenković
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Serbia
| | - Milica Prostran
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Serbia
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University, Bremen, Germany.
| | - Danijela Z Krstić
- Institute of Medical Chemistry, Faculty of Medicine, University of Belgrade, Serbia.
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21
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Polyoxometalates Assemblies and Their Electrochemical Applications. STRUCTURE AND BONDING 2017. [DOI: 10.1007/430_2017_6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
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22
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Synthesis, characterization and catalytic properties of a copper complex containing decavanadate nanocluster, Na 2 [Cu(H 2 O) 6 ] 2 {V 10 O 28 }·4H 2 O. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.02.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Sartzi H, Miras HN, Vilà‐Nadal L, Long D, Cronin L. Trapping the δ Isomer of the Polyoxometalate‐Based Keggin Cluster with a Tripodal Ligand. Angew Chem Int Ed Engl 2015; 54:15488-92. [DOI: 10.1002/anie.201505377] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 08/23/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Harikleia Sartzi
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, Scotland (UK) http://www.croninlab.com
| | - Haralampos N. Miras
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, Scotland (UK) http://www.croninlab.com
| | - Laia Vilà‐Nadal
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, Scotland (UK) http://www.croninlab.com
| | - De‐Liang Long
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, Scotland (UK) http://www.croninlab.com
| | - Leroy Cronin
- WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow G12 8QQ, Scotland (UK) http://www.croninlab.com
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24
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Sartzi H, Miras HN, Vilà-Nadal L, Long DL, Cronin L. Trapping the δ Isomer of the Polyoxometalate-Based Keggin Cluster with a Tripodal Ligand. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505377] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Bâlici Ş, Wankeu-Nya M, Rusu D, Nicula GZ, Rusu M, Florea A, Matei H. Ultrastructural Analysis of In Vivo Hypoglycemiant Effect of Two Polyoxometalates in Rats with Streptozotocin-Induced Diabetes. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2015; 21:1236-1248. [PMID: 26343528 DOI: 10.1017/s1431927615015020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Two polyoxometalates (POMs), synthesized through a self-assembling method, were used in the treatment of streptozotocin (STZ)-induced diabetic rats. One of these nanocompounds [tris(vanadyl)-substituted tungsto-antimonate(III)-anions—POM1] was previously described in the literature, whereas the second [tris-butyltin-21-tungsto-9-antimonate(III)-anions—POM2], was prepared by us based on our original formula. In rats with STZ-induced diabetes treated with POMs (up to a cumulative dose of 4 mg/kg bodyweight at the end of the treatments), statistically significant reduced levels of blood glucose were measured after 3 weeks, as compared with the diabetic control groups (DCGs). Ultrastructural analysis of pancreatic β-cells (including the mean diameter of secretory vesicles and of their insulin granules) in the treated diabetic rats proved the POMs contribute to limitation of cellular degeneration triggered by STZ, as well as to the presence of increased amounts of insulin-containing vesicles as compared with the DCG. The two POMs also showed hepatoprotective properties when ultrastructural aspects of hepatocytes in the experimental groups of rats were studied. Based on our in vivo studies, we concluded that the two POMs tested achieved hypoglycemiant effects by preventing STZ-triggered apoptosis of pancreatic β-cells and stimulation of insulin synthesis.
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Affiliation(s)
- Ştefana Bâlici
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Modeste Wankeu-Nya
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Dan Rusu
- 4Department of Physical-Chemistry, Faculty of Pharmacy,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Gheorghe Z Nicula
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Mariana Rusu
- 2Department of Inorganic Chemistry, Faculty of Chemistry and Chemical Engineering,"Babeş-Bolyai" University,11 Arany Janos St.,400028 Cluj-Napoca,România
| | - Adrian Florea
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
| | - Horea Matei
- 1Department of Cell and Molecular Biology, Faculty of Medicine,"Iuliu Haţieganu" University of Medicine and Pharmacy,6 Louis Pasteur St.,400349 Cluj-Napoca,România
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26
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Bâlici Ş, Şuşman S, Rusu D, Nicula GZ, Soriţău O, Rusu M, Biris AS, Matei H. Differentiation of stem cells into insulin-producing cells under the influence of nanostructural polyoxometalates. J Appl Toxicol 2015; 36:373-84. [DOI: 10.1002/jat.3218] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 07/01/2015] [Accepted: 07/01/2015] [Indexed: 01/29/2023]
Affiliation(s)
- Ştefana Bâlici
- Department of Cell and Molecular Biology, Faculty of Medicine; “Iuliu Haţieganu” University of Medicine and Pharmacy; Cluj-Napoca România
- Department of Inorganic Chemistry, Faculty of Chemistry and Chemical Engineering; “Babeş-Bolyai” University; Cluj-Napoca România
| | - Sergiu Şuşman
- Department of Morphological Sciences, Faculty of Medicine; “Iuliu Haţieganu” University of Medicine and Pharmacy; Cluj-Napoca România
- Imogen Research Centre - Department of Pathology; Cluj-Napoca România
- Radiotherapy, Tumor and Radiobiology Laboratory; The Oncology Institute “Prof. Dr. Ion Chiricuţă”; Cluj-Napoca România
| | - Dan Rusu
- Department of Physical-Chemistry, Faculty of Pharmacy; “Iuliu Haţieganu” University of Medicine and Pharmacy; Cluj-Napoca România
| | - Gheorghe Zsolt Nicula
- Department of Cell and Molecular Biology, Faculty of Medicine; “Iuliu Haţieganu” University of Medicine and Pharmacy; Cluj-Napoca România
| | - Olga Soriţău
- Radiotherapy, Tumor and Radiobiology Laboratory; The Oncology Institute “Prof. Dr. Ion Chiricuţă”; Cluj-Napoca România
| | - Mariana Rusu
- Department of Inorganic Chemistry, Faculty of Chemistry and Chemical Engineering; “Babeş-Bolyai” University; Cluj-Napoca România
| | - Alexandru S. Biris
- Center for Integrative Nanotechnology Sciences; University of Arkansas at Little Rock; Little Rock AR USA
| | - Horea Matei
- Department of Cell and Molecular Biology, Faculty of Medicine; “Iuliu Haţieganu” University of Medicine and Pharmacy; Cluj-Napoca România
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27
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Qu D, Niu F, Zhao X, Yan KX, Ye YT, Wang J, Zhang M, You Z. Synthesis, crystal structures, and urease inhibition of an acetohydroxamate-coordinated oxovanadium(V) complex derived from N′-(3-bromo-2-hydroxybenzylidene)-4-methoxybenzohydrazide. Bioorg Med Chem 2015; 23:1944-9. [DOI: 10.1016/j.bmc.2015.03.036] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 03/11/2015] [Accepted: 03/12/2015] [Indexed: 12/30/2022]
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28
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Ilyas Z, Shah HS, Al-Oweini R, Kortz U, Iqbal J. Antidiabetic potential of polyoxotungstates: in vitro and in vivo studies. Metallomics 2015; 6:1521-6. [PMID: 24887259 DOI: 10.1039/c4mt00106k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Diabetes mellitus is a chronic metabolic disorder continuously affecting people all over the world. A common way to treat diabetes mellitus is to limit the conversion of carbohydrates into glucose which is mediated by glucosidase enzymes. Diabetes mellitus is also famous for its life-threatening microvascular (retinopathy, neuropathy and nephropathy) and macrovascular (atherosclerosis) complications. Aldose reductases present in eye lens (ALR1) and kidney (ALR2) are responsible for microvascular complications. The production of advanced glycation end products (AGEs) is involved in the development of atherosclerosis. The present work was aimed at the synthesis and in vitro/in vivo evaluation of different polyoxotungstates against glucosidases (α- and β), aldose reductases (ALR1 and ALR2) and AGEs to discover a new treatment which may limit the complications associated with diabetes mellitus. The polyanion [P6W18O79](20-) was found to be the most potent inhibitor of α-glucosidase (IC50 = 1.33 ± 0.41 μM), ALR1 (IC50 = 0.4 ± 0.009 μM) and ALR2 (IC50 = 0.38 ± 0.02 μM). Animal studies showed that the polyanion [H2W12O40](6-) was very effective in reducing the blood glucose level to 84.25 ± 5.07 mg dL(-1) when compared with standard antidiabetic drug glibenclamide (150.62 ± 9.35 mg dL(-1)) measured after maximum 8 h of dose administration. The data obtained from in vitro and in vivo experiments confirm that [P6W18O79](20-) and [H2W12O40](6-) could be used as a new treatment of diabetes mellitus.
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Affiliation(s)
- Zaitoon Ilyas
- Centre for Advanced Drug Research, COMSATS Institute of Information Technology, Abbottabad, Postal Code 22060, Pakistan.
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29
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Lee SY, Fiene A, Li W, Hanck T, Brylev KA, Fedorov VE, Lecka J, Haider A, Pietzsch HJ, Zimmermann H, Sévigny J, Kortz U, Stephan H, Müller CE. Polyoxometalates--potent and selective ecto-nucleotidase inhibitors. Biochem Pharmacol 2014; 93:171-81. [PMID: 25449596 DOI: 10.1016/j.bcp.2014.11.002] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Revised: 11/01/2014] [Accepted: 11/04/2014] [Indexed: 01/06/2023]
Abstract
Polyoxometalates (POMs) are inorganic cluster metal complexes that possess versatile biological activities, including antibacterial, anticancer, antidiabetic, and antiviral effects. Their mechanisms of action at the molecular level are largely unknown. However, it has been suggested that the inhibition of several enzyme families (e.g., phosphatases, protein kinases or ecto-nucleotidases) by POMs may contribute to their pharmacological properties. Ecto-nucleotidases are cell membrane-bound or secreted glycoproteins involved in the hydrolysis of extracellular nucleotides thereby regulating purinergic (and pyrimidinergic) signaling. They comprise four distinct families: ecto-nucleoside triphosphate diphosphohydrolases (NTPDases), ecto-nucleotide pyrophosphatases/phosphodiesterases (NPPs), alkaline phosphatases (APs) and ecto-5'-nucleotidase (eN). In the present study, we evaluated the inhibitory potency of a series of polyoxometalates as well as chalcogenide hexarhenium cluster complexes at a broad range of ecto-nucleotidases. [Co4(H2O)2(PW9O34)2](10-) (5, PSB-POM142) was discovered to be the most potent inhibitor of human NTPDase1 described so far (Ki: 3.88 nM). Other investigated POMs selectively inhibited human NPP1, [TiW11CoO40](8-) (4, PSB-POM141, Ki: 1.46 nM) and [NaSb9W21O86](18-) (6, PSB-POM143, Ki: 4.98 nM) representing the most potent and selective human NPP1 inhibitors described to date. [NaP5W30O110](14-) (8, PSB-POM144) strongly inhibited NTPDase1-3 and NPP1 and may therefore be used as a pan-inhibitor to block ATP hydrolysis. The polyoxoanionic compounds displayed a non-competitive mechanism of inhibition of NPPs and eN, but appeared to be competitive inhibitors of TNAP. Future in vivo studies with selected inhibitors identified in the current study are warranted.
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Affiliation(s)
- Sang-Yong Lee
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
| | - Amelie Fiene
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
| | - Wenjin Li
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
| | - Theodor Hanck
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
| | - Konstantin A Brylev
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russia Academy of Sciences, 3 Acad. Lavrentiev prospect, 630090 Novosibirsk, Russia; Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia
| | - Vladimir E Fedorov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russia Academy of Sciences, 3 Acad. Lavrentiev prospect, 630090 Novosibirsk, Russia; Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia
| | - Joanna Lecka
- Département de Microbiologie-Infectiologie et d'Immunologie, Faculté de Médecine, Université Laval, Québec City, QC, Canada G1V 0A6; Centre de Recherche du CHU de Québec, Québec City, QC, Canada G1V 4G2
| | - Ali Haider
- School of Engineering and Science, Campus Ring 8, Jacobs University, 28759 Bremen, Germany
| | - Hans-Jürgen Pietzsch
- Institute of Radiopharmaceutical Cancer Research, Helmholtz Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Herbert Zimmermann
- Institute of Cell Biology and Neuroscience, Molecular and Cellular Neurobiology, Goethe University, 60438 Frankfurt am Main, Germany
| | - Jean Sévigny
- Département de Microbiologie-Infectiologie et d'Immunologie, Faculté de Médecine, Université Laval, Québec City, QC, Canada G1V 0A6; Centre de Recherche du CHU de Québec, Québec City, QC, Canada G1V 4G2
| | - Ulrich Kortz
- School of Engineering and Science, Campus Ring 8, Jacobs University, 28759 Bremen, Germany
| | - Holger Stephan
- Institute of Radiopharmaceutical Cancer Research, Helmholtz Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Christa E Müller
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany.
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30
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Huang J, Liu W, Dolzhnikov DS, Protesescu L, Kovalenko MV, Koo B, Chattopadhyay S, Shenchenko EV, Talapin DV. Surface functionalization of semiconductor and oxide nanocrystals with small inorganic oxoanions (PO4(3-), MoO4(2-)) and polyoxometalate ligands. ACS NANO 2014; 8:9388-402. [PMID: 25181260 DOI: 10.1021/nn503458y] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In this work, we study the functionalization of the nanocrystal (NC) surface with inorganic oxo ligands, which bring a new set of functionalities to all-inorganic colloidal nanomaterials. We show that simple inorganic oxoanions, such as PO4(3-) and MoO4(2-), exhibit strong binding affinity to the surface of various II-VI and III-V semiconductor and metal oxide NCs. ζ-Potential titration offered a useful tool to differentiate the binding affinities of inorganic ligands toward different NCs. Direct comparison of the binding affinity of oxo and chalcogenidometallate ligands revealed that the former ligands form a stronger bond with oxide NCs (e.g., Fe2O3, ZnO, and TiO2), while the latter prefer binding to metal chalcogenide NCs (e.g., CdSe). The binding between NCs and oxo ligands strengthens when moving from small oxoanions to polyoxometallates (POMs). We also show that small oxo ligands and POMs make it possible to tailor NC properties. For example, we observed improved stability upon Li(+)-ion intercalation into the films of Fe2O3 hollow NCs when capped with MoO4(2-) ligands. We also observed lower overpotential and enhanced exchange current density for water oxidation using Fe2O3 NCs capped with [P2Mo18O62](6-) ligands and even more so for [{Ru4O4(OH)2(H2O)4}(γ-SiW10O36)2] with POM as the capping ligand.
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Affiliation(s)
- Jing Huang
- Department of Chemistry and James Franck Institute, University of Chicago , Chicago, Illinois 60637, United States
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31
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Aureliano M, Ohlin CA. Decavanadate in vitro and in vivo effects: facts and opinions. J Inorg Biochem 2014; 137:123-30. [PMID: 24865633 DOI: 10.1016/j.jinorgbio.2014.05.002] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 05/03/2014] [Accepted: 05/03/2014] [Indexed: 02/07/2023]
Abstract
This review covers recent advances in the understanding of the in vitro and in vivo effects of decavanadate, (V10O28)(6-), particularly in mitochondria. In vivo toxicological studies involving vanadium rarely account for the fact that under physiological conditions some vanadium may be present in the form of the decavanadate ion, which may behave differently from ortho- and metavanadates. It has for example been demonstrated that vanadium levels in heart or liver mitochondria are increased upon decavanadate exposure. Additionally, in vitro studies have shown that mitochondrial depolarization (IC50, 40 nM) and oxygen consumption (IC50, 99 nM) are strongly affected by decavanadate, which causes reduction of cytochrome b (complex III). We review these recent findings which together suggest that the observed cellular targets, metabolic pathway and toxicological effects differ according to the species of vanadium present. Finally, the toxicological effects of decavanadate depend on several factors such as the mode of administration, exposure time and type of tissue.
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Affiliation(s)
- M Aureliano
- DCBB, Faculty of Sciences and Technology, University of Algarve, Campus de Gambelas, 8005-135 Faro, Portugal; CCMar, University of Algarve, Campus de Gambelas, 8005-135 Faro, Portugal.
| | - C André Ohlin
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
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Shah HS, Al-Oweini R, Haider A, Kortz U, Iqbal J. Cytotoxicity and enzyme inhibition studies of polyoxometalates and their chitosan nanoassemblies. Toxicol Rep 2014; 1:341-352. [PMID: 28962250 PMCID: PMC5598103 DOI: 10.1016/j.toxrep.2014.06.001] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Revised: 06/01/2014] [Accepted: 06/01/2014] [Indexed: 12/19/2022] Open
Abstract
Polyoxometalates (POMs) have become very significant in biomedical research for their structural diversity which renders them highly active against bacterial, viral and cancer diseases. In this study three different POMs were synthesized and nanoassemblies were made with chitosan (CTS), a natural biodegradable polymer with excellent drug carrier properties. The compounds were tested on two isoenzymes of alkaline phosphatases including tissue specific calf intestine alkaline phosphatase (CIAP) and tissue non-specific alkaline phosphatase (TNAP). Compound [TeW6O24]6− (TeW6) showed the highest activity (45.4 ± 11.3 nM) among tested compounds against TNAP. Similarly, chitosan-[TeW6O24]6− (CTS-TeW6) was proved to be a potent inhibitor of CIAP with Ki value of 22 ± 7 nM. A comparative study was made to evaluate their cytotoxic potential against HeLa cells. Among all tested compounds, Chitosan-[NaP5W30O110]14− (CTS-P5W30) has showed higher percent cytotoxicity (88 ± 10%) at 10 μM when compared with the standard anticancer drug vincristine (72 ± 7%). The study revealed that selected POMs proved excellent anticancer potential and were equally effective against alkaline phosphatase enzyme, an increased level of which may indicate cancer metastasis.
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Affiliation(s)
- Hamid Saeed Shah
- Centre for Advanced Drug Research, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Rami Al-Oweini
- School of Engineering and Science, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Ali Haider
- School of Engineering and Science, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Ulrich Kortz
- School of Engineering and Science, Jacobs University, P.O. Box 750 561, 28725 Bremen, Germany
| | - Jamshed Iqbal
- Centre for Advanced Drug Research, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
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Synthesis and structural characterization of Lindqvist type mixed-metal cluster anion [V2W4O19]4− in discrete and coordination polymer compounds. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Iqbal S, Nisar ur Rehman, Kortz U, Iqbal J. Development of a fast and efficient CE enzyme assay for the characterization and inhibition studies of α-glucosidase inhibitors. J Sep Sci 2013; 36:3623-8. [PMID: 23996827 DOI: 10.1002/jssc.201300758] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 08/16/2013] [Accepted: 08/20/2013] [Indexed: 11/10/2022]
Abstract
The inhibition of the α-glucosidase enzyme plays an important role in the treatment of diabetes mellitus. We have established a highly sensitive, fast, and convenient CE method for the characterization of the enzyme and inhibition studies of α-glucosidase inhibitors. The separation conditions were optimized; the pH value and concentration of the borate-based separation buffer were optimized in order to achieve baseline separation of p-nitrophenyl-α-d-glucopyranoside and p-nitrophenolate. The optimized method using 25 mM tetraborate buffer, pH 9.5, was evaluated in terms of repeatability, LOD, LOQ, and linearity. The LOD and LOQ were 0.32 and 1.32 μM for p-nitrophenyl-α-D-glucopyranoside and 0.83 and 3.42 μM for p-nitrophenolate, respectively. The value of the Michaelis-Menten constant (K(m)) determined for the enzyme is 0.61 mM, which is in good agreement with the reported data. The RSDs (n = 6) for the migration time was 0.67 and 1.83% for substrate and product, respectively. In the newly established CE method, the separation of the reaction analytes was completed in <4 min. The developed CE method is rapid and simple for measuring enzyme kinetics and for assaying inhibitors.
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Affiliation(s)
- Shoaib Iqbal
- Department of Pharmaceutical Sciences, COMSATS Institute of Information Technology, Abbottabad, Pakistan
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Chatkon A, Chatterjee PB, Sedgwick MA, Haller KJ, Crans DC. Counterion Affects Interaction with Interfaces: The Antidiabetic Drugs Metformin and Decavanadate. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201345] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Geisberger G, Gyenge EB, Hinger D, Bösiger P, Maake C, Patzke GR. Synthesis, characterization and bioimaging of fluorescent labeled polyoxometalates. Dalton Trans 2013; 42:9914-20. [DOI: 10.1039/c3dt50414j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Stephan H, Kubeil M, Emmerling F, Müller CE. Polyoxometalates as Versatile Enzyme Inhibitors. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201224] [Citation(s) in RCA: 123] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Miras HN, Chilas GI, Cronin L, Kabanos TA. Sulfite Anions as Structure-Directing Templates for the Engineering of Modular Polyoxometalates. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201065] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Corella-Ochoa MN, Miras HN, Long DL, Cronin L. Controlling the Self-Assembly of a Mixed-Metal Mo/V-Selenite Family of Polyoxometalates. Chemistry 2012; 18:13743-54. [DOI: 10.1002/chem.201200912] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2012] [Indexed: 11/08/2022]
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Fraqueza G, Ohlin CA, Casey WH, Aureliano M. Sarcoplasmic reticulum calcium ATPase interactions with decaniobate, decavanadate, vanadate, tungstate and molybdate. J Inorg Biochem 2012; 107:82-9. [PMID: 22178669 DOI: 10.1016/j.jinorgbio.2011.10.010] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 10/08/2011] [Accepted: 10/20/2011] [Indexed: 02/07/2023]
Abstract
Over the last few decades there has been increasing interest in oxometalate and polyoxometalate applications to medicine and pharmacology. This interest arose, at least in part, due to the properties of these classes of compounds as anti-cancer, anti-diabetic agents, and also for treatment of neurodegenerative diseases, among others. However, our understanding of the mechanism of action would be improved if biological models could be used to clarify potential toxicological effects in main cellular processes. Sarcoplasmic reticulum (SR) vesicles, containing a large amount of Ca(2+)-ATPase, an enzyme that accumulates calcium by active transport using ATP, have been suggested as a useful model to study the effects of oxometalates on calcium homeostasis. In the present article, it is shown that decavanadate, decaniobate, vanadate, tungstate and molybdate, all inhibited SR Ca(2+)-ATPase, with the following IC(50) values: 15, 35, 50, 400 μM and 45 mM, respectively. Decaniobate (Nb(10)), is the strongest P-type enzyme inhibitor, after decavanadate (V(10)). Atomic-absorption spectroscopy (AAS) analysis, indicates that decavanadate binds to the protein with a 1:1 decavanadate:Ca(2+)-ATPase stoichiometry. Furthermore, V(10) binds with similar extension to all the protein conformations, which occur during calcium translocation by active transport, namely E1, E1P, E2 and E2P, as analysed by AAS. In contrast, it was confirmed that the binding of monomeric vanadate (H(2)VO(4)(2-); V(1)) to the calcium pump is favoured only for the E2 and E2P conformations of the ATPase, whereas no significant amount of vanadate is bound to the E1 and E1P conformations. Scatchard plot analysis, confirmed a 1:1 ratio for decavanadate-Ca(2+)-ATPase, with a dissociation constant, k(d) of 1 μM(-1). The interaction of decavanadate V(10)O(28)(6-) (V(10)) with Ca(2+)-ATPase is prevented by the isostructural and isoelectronic decaniobate Nb(10)O(28)(6-) (Nb(10)), whereas no significant effects were detected with ATP or with heparin, a known competitive ATP binding molecule, suggesting that V(10) binds non-competitively, with respect to ATP, to the protein. Finally, it was shown that decaniobate inhibits SR Ca(2+)-ATPase activity in a non competitive type of inhibition, with respect to ATP. Taken together, these data demonstrate that decameric niobate and vanadate species are stronger inhibitors of the SR calcium ATPase than simple monomeric vanadate, tungstate and molybdate oxometalates, thus affecting calcium homeostasis, cell signalling and cell bioenergetics, as well many other cellular processes. The ability of these oxometalates to act either as phosphate analogues, as a transition-state analogue in enzyme-catalysed phosphoryl group transfer processes and as potentially nucleotide-dependent enzymes modulators or inhibitors, suggests that different oxometalates may reveal different mechanistic preferences in these classes of enzymes.
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Affiliation(s)
- Gil Fraqueza
- Department of Food Engineering, ISE, University of Algarve, 8005-139 Faro, Portugal
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Das SP, Ankireddy SR, Boruah JJ, Islam NS. Synthesis and characterization of peroxotungsten(vi) complexes bound to water soluble macromolecules and their interaction with acid and alkaline phosphatases. RSC Adv 2012. [DOI: 10.1039/c2ra20358h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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Aureliano M. Recent perspectives into biochemistry of decavanadate. World J Biol Chem 2011; 2:215-25. [PMID: 22031844 PMCID: PMC3202125 DOI: 10.4331/wjbc.v2.i10.215] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 09/07/2011] [Accepted: 09/14/2011] [Indexed: 02/05/2023] Open
Abstract
The number of papers about decavanadate has doubled in the past decade. In the present review, new insights into decavanadate biochemistry, cell biology, and antidiabetic and antitumor activities are described. Decameric vanadate species (V10) clearly differs from monomeric vanadate (V1), and affects differently calcium pumps, and structure and function of myosin and actin. Only decavanadate inhibits calcium accumulation by calcium pump ATPase, and strongly inhibits actomyosin ATPase activity (IC50 = 1.4 μmol/L, V10), whereas no such effects are detected with V1 up to 150 μmol/L; prevents actin polymerization (IC50 of 68 μmol/L, whereas no effects detected with up to 2 mmol/L V1); and interacts with actin in a way that induces cysteine oxidation and vanadate reduction to vanadyl. Moreover, in vivo decavanadate toxicity studies have revealed that acute exposure to polyoxovanadate induces different changes in antioxidant enzymes and oxidative stress parameters, in comparison with vanadate. In vitro studies have clearly demonstrated that mitochondrial oxygen consumption is strongly affected by decavanadate (IC50, 0.1 μmol/L); perhaps the most relevant biological effect. Finally, decavanadate (100 μmol/L) increases rat adipocyte glucose accumulation more potently than several vanadium complexes. Preliminary studies suggest that decavanadate does not have similar effects in human adipocytes. Although decavanadate can be a useful biochemical tool, further studies must be carried out before it can be confirmed that decavanadate and its complexes can be used as anticancer or antidiabetic agents.
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Topic A, Milenkovic M, Uskokovic-Markovic S, Vucicevic D. Insulin mimetic effect of tungsten compounds on isolated rat adipocytes. Biol Trace Elem Res 2010; 134:296-306. [PMID: 19644657 DOI: 10.1007/s12011-009-8474-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2009] [Accepted: 07/16/2009] [Indexed: 10/20/2022]
Abstract
Investigations of effective, orally active, and safe antidiabetic metallopharmaceuticals have been carried out during the last two decades. It has been reported that tungsten compounds mimic the action of insulin in intact cell systems. As insulin mimetics, the most investigated tungsten compound was sodium tungstate (ST), rarely investigated was tungstophosphoric acid (WPA), but never alanine complex of tungstophosphoric acid (WPA-A). In this study, the insulin mimetic activity of three different tungsten compounds, ST, WPA, and WPA-A, was evaluated by means of in vitro measurements of the glucose uptake and inhibition of free fatty acids release from epinephrine-treated isolated rat white adipocytes. We investigated the influence of concentration (lower and higher, 0.1 and 1.0 mM, respectively) and solvent: isotonic salt solution-saline (0.9% w/v of NaCl) and dimethyl sulfoxide (DMSO; 2% v/v), on the biological effect of tested compounds. Our experimental data showed that all of the three investigated tungsten compounds possess insulin mimetic activity in vitro on the isolated adipocytes. Influence of concentration and solvents on insulin mimetic effect for the certain tungsten compounds were: WPA was shown effect independently of concentration and solvents; higher concentration and DMSO were significant decreasing insulin mimetic effect of ST; lower concentration and saline led to decreasing effect of WPA-A. Generally, there were no differences in insulin mimetic effect of three tungsten compounds in lower concentration and dissolved in DMSO. When saline was used as solvent, it was needed higher concentration of investigated compounds to accomplish the same effect. In conclusion, our results suggest that low concentration (0.1 mM) of ST, WPA, and WPA-A dissolved in 2% DMSO could be the good candidates for in vivo investigation of their antidiabetic properties.
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Affiliation(s)
- Aleksandra Topic
- Department of Medical Biochemistry, University of Belgrade, Serbia.
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Synthesis, crystal structures and anticancer activities of two decavanadate compounds. TRANSIT METAL CHEM 2010. [DOI: 10.1007/s11243-010-9369-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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46
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Synthesis and structural characterizations of four polyoxometalate compounds consisting of transition metals or alkaline cations as the bridging units. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.03.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ronconi L, Sadler PJ. Applications of heteronuclear NMR spectroscopy in biological and medicinal inorganic chemistry. Coord Chem Rev 2008; 252:2239-2277. [PMID: 32226090 PMCID: PMC7094630 DOI: 10.1016/j.ccr.2008.01.016] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2007] [Accepted: 01/15/2008] [Indexed: 11/30/2022]
Abstract
There is a wide range of potential applications of inorganic compounds, and metal coordination complexes in particular, in medicine but progress is hampered by a lack of methods to study their speciation. The biological activity of metal complexes is determined by the metal itself, its oxidation state, the types and number of coordinated ligands and their strength of binding, the geometry of the complex, redox potential and ligand exchange rates. For organic drugs a variety of readily observed spin I = 1/2 nuclei can be used (1H, 13C, 15N, 19F, 31P), but only a few metals fall into this category. Most are quadrupolar nuclei giving rise to broad lines with low detection sensitivity (for biological systems). However we show that, in some cases, heteronuclear NMR studies can provide new insights into the biological and medicinal chemistry of a range of elements and these data will stimulate further advances in this area.
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Key Words
- ADP, adenosine diphosphate
- AES, atomic emission spectroscopy
- AMP, adenosine monophosphate
- ATP, adenosine triphosphate
- BNCT, boron neutron capture therapy
- BPG, 2,3-bisphosphoglycerate
- BSA, bovine serum albumin
- BSH, sodium borocaptate
- Bioinorganic chemistry
- Biological systems
- DNA, deoxyribonucleic acid
- EDTA-N4, ethylenediaminetetraacetamide
- EFG, electric field gradient
- GMP, guanosine monophosphate
- HMQC, heteronuclear multiple quantum correlation
- Heteronuclear NMR spectroscopy
- Im, imidazole
- In, indazole
- MQF, multiple quantum filtered
- MRI, magnetic resonance imaging
- Medicinal inorganic chemistry
- Metallopharmaceuticals
- NOE, nuclear Overhauser effect
- PET, positron emission tomography
- Quadrupolar nuclei
- RBC, red blood cell
- RNA, ribonucleic acid
- SDS, sodium dodecyl sulfate
- rRNA, ribosomal ribonucleic acid
- tRNA, transfer ribonucleic acid
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Affiliation(s)
- Luca Ronconi
- School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, UK
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, UK
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Holclajtner-Antunović I, Bajuk-Bogdanović D, Todorović M, Mioč UB, Zakrzewska J, Uskoković-Marković S. Sectroscopic study of stability and molecular species of 12-tungstophosphoric acid in aqueous solution. CAN J CHEM 2008. [DOI: 10.1139/v08-138] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The various molecular species of 12-tungstophosporic acid (WPA) in aqueous solutions of different pH values (from 1 to 11.5) were investigated by UV, IR, and NMR spectroscopy. The dependence of the attained equilibrium composition in solution on time, concentration of WPA, and type of buffer used was studied. Obtained results indicate that the buffer type and pH value greatly determine the equilibrium composition in the solution. The Keggin structure of the WPA is sustained only up to pH 1.5. With further increase in pH, the decomposition of Keggin anion does not lead directly to the monovacant lacunary anion. Between 1.5 and 2.0, the structures with 2 phosphorus atoms from the Dawson series are dominant as intermediate species. In the pH range 3.5–7.5, WPA is present in the form of the monovacant lacunary Keggin anion. These results are of special importance for the biomedical and catalytic applications of heteropoly compounds (HPCs) and for an improved understanding of the mechanism of their functioning.Key words: heteropolyacids of the Keggin structure, hydrostability, UV, IR and NMR spectroscopy.
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Girón MD, Sevillano N, Vargas AM, Domínguez J, Guinovart JJ, Salto R. The glucose-lowering agent sodium tungstate increases the levels and translocation of GLUT4 in L6 myotubes through a mechanism associated with ERK1/2 and MEF2D. Diabetologia 2008; 51:1285-95. [PMID: 18483800 DOI: 10.1007/s00125-008-1003-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2008] [Accepted: 03/16/2008] [Indexed: 12/17/2022]
Abstract
AIMS/HYPOTHESIS The aim of this study was to investigate the action of the glucose-lowering compound sodium tungstate on glucose transport in muscle myotubes and to unravel the molecular events underlying the effects observed. METHODS We studied the effects of tungstate on 2-deoxy-D: -glucose uptake, levels and translocation of the glucose transporters GLUT4 and GLUT1, and Glut4 (also known as Slc2a4) promoter activity. We also measured the modifications of individual components of the signalling pathways involved in the effects observed. RESULTS Tungstate increased 2-deoxy-D: -glucose uptake in differentiated L6 myotubes through an increase in the total amount and translocation of GLUT4 transporter. The effects on glucose uptake were additive to those of insulin. Tungstate activated transcription of the Glut4 promoter, as shown by an increase in Glut4 mRNA, and by a promoter reporter assay. The assay of deletions of the Glut4 promoter indicated that the effect of tungstate is mediated by the myocyte enhancer factor 2 (MEF2)-binding domain. Accordingly, MEF2 levels and DNA binding activities were increased in response to the treatment. Tungstate-induced glucose uptake and GLUT4 transcriptional activation were dependent on the activation of extracellular signal-regulated kinases 1 and 2 (ERK1/2), while no changes were observed in the phosphorylation state of the beta subunit of the insulin receptor, in the phosphatidylinositol 3-kinase pathway or in the activation of 5'AMP-activated protein kinase. CONCLUSIONS/INTERPRETATION Tungstate activates glucose uptake in myotubes through a novel ERK1/2-dependent mechanism. This effect is exerted by an increase in the content and translocation of the GLUT4 transporter. This is the first report of a glucose-lowering compound activating Glut4 transcription through an ERK1/2-dependent increase in MEF2 levels.
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Affiliation(s)
- M D Girón
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, Campus de Cartuja sn, 18071, Granada, Spain
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Long DL, Burkholder E, Cronin L. Polyoxometalate clusters, nanostructures and materials: From self assembly to designer materials and devices. Chem Soc Rev 2007; 36:105-21. [PMID: 17173149 DOI: 10.1039/b502666k] [Citation(s) in RCA: 1648] [Impact Index Per Article: 96.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyoxometalates represent a diverse range of molecular clusters with an almost unmatched range of physical properties and the ability to form structures that can bridge several length scales. The new building block principles that have been discovered are beginning to allow the design of complex clusters with desired properties and structures and several structural types and novel physical properties are examined. In this critical review the synthetic and design approaches to the many polyoxometalate cluster types are presented encompassing all the sub-types of polyoxometalates including, isopolyoxometalates, heteropolyoxometalates, and reduced molybdenum blue systems. As well as the fundamental structure and bonding aspects, the final section is devoted to discussing these clusters in the context of contemporary and emerging interdisciplinary interests from areas as diverse as anti-viral agents, biological ion transport models, and materials science.
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Affiliation(s)
- De-Liang Long
- WestCHEM, Department of Chemistry, The University of Glasgow, Glasgow, UK G12 8QQ
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