101
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Salazar Marcano DE, Lentink S, Moussawi MA, Parac-Vogt TN. Solution Dynamics of Hybrid Anderson-Evans Polyoxometalates. Inorg Chem 2021; 60:10215-10226. [PMID: 33881856 DOI: 10.1021/acs.inorgchem.1c00511] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Understanding the stability and speciation of metal-oxo clusters in solution is essential for many of their applications in different areas. In particular, hybrid organic-inorganic polyoxometalates (HPOMs) have been attracting increasing attention as they combine the complementary properties of organic ligands and metal-oxygen nanoclusters. Nevertheless, the speciation and solution behavior of HPOMs have been scarcely investigated. Hence, in this work, a series of HPOMs based on the archetypical Anderson-Evans structure, δ-[MnMo6O18{(OCH2)3C-R}2]3-, with different functional groups (R = -NH2, -CH3, -NHCOCH2Cl, -N═CH(2-C5H4N) {pyridine; -Pyr}, and -NHCOC9H15N2OS {biotin; -Biot}) and countercations (tetrabutylammonium {TBA}, Li, Na, and K) were synthesized, and their solution behavior was studied in detail. In aqueous solutions, decomposition of HPOMs into the free organic ligand, [MoO4]2-, and free Mn3+ was observed over time and was shown to be highly dependent on the pH, temperature, and nature of the ligand functional group but largely independent of ionic strength or the nature of the countercation. Furthermore, hydrolysis of the amide and imine bonds often present in postfunctionalized HPOMs was also observed. Hence, HPOMs were shown to exhibit highly dynamic behavior in solution, which needs to be carefully considered when designing HPOMs, particularly for biological applications.
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Affiliation(s)
| | - Sarah Lentink
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Mhamad A Moussawi
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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102
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Zhou Q, Xu B, Tang X, Dai S, Ding B, Li D, Zheng A, Zhang T, Yao Y, Gong X, Hou Z. Role of Organic Fluoride Salts in Stabilizing Niobium Oxo-Clusters Catalyzing Epoxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:8190-8203. [PMID: 34184530 DOI: 10.1021/acs.langmuir.1c00893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We present here that easily available organic salts can stabilize/modify niobium (Nb) oxo-clusters. The as-synthesized Nb oxo-clusters have been characterized by various methods. These Nb oxo-clusters were catalytically active for the epoxidation of allylic alcohols and olefins with H2O2 as an oxidant. Notably, Nb-OC@TBAF-0.5 appeared as highly dispersed nanosized particles and showed the highest catalytic activity, which can be attributed to the following reasons on the basis of characterization. First, the strong coordination of fluorine ions with Nb sites and the steric protection with bulky organic cations led to high stabilization and dispersion of the oxo-clusters in the course of the reaction. Second, a hydrogen-bond interaction between the coordinated fluorine atom and the -OH group of allylic alcohol favored the epoxidation reaction. Third, the electron density of Nb sites decreased due to the strong electron-withdrawing ability of F- adjacent to Nb sites, thus promoting the electrophilic oxygen transfer to the C═C bond.
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Affiliation(s)
- Qingqing Zhou
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Beibei Xu
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China
| | - Xuan Tang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Sheng Dai
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Bingjie Ding
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Difan Li
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Anna Zheng
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Tong Zhang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Yefeng Yao
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China
| | - Xueqing Gong
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
| | - Zhenshan Hou
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
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103
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Sifaki K, Gumerova NI, Giester G, Rompel A. Synthesis and characterization of the Anderson-Evans tungstoantimonate [Na 5(H 2O) 18{(HOCH 2) 2CHNH 3} 2][SbW 6O 24]. Acta Crystallogr C Struct Chem 2021; 77:420-425. [PMID: 34216448 PMCID: PMC8254527 DOI: 10.1107/s2053229621006239] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 06/16/2021] [Indexed: 11/11/2022] Open
Abstract
A novel tungstoantimonate, [Na5(H2O)18{(HOCH2)2CHNH3}2][SbVWVI6O24] (SbW6), was synthesized from an aqueous solution and structurally characterized by single-crystal X-ray diffraction, which revealed C2/c symmetry. The structure contains two serinol [(HOCH2)2CHNH3]+ and five Na+ cations, which are octahedrally surrounded by 18 water molecules, and one [SbVWVI6O24]7- anion. The serinol molecules also play a critical role in the synthesis by acting as a mild buffering agent. Each of the WVI and SbV ions is six-coordinated and displays a distorted octahedral motif. A three-dimensional supramolecular framework is formed via hydrogen-bonding interactions between the tungstoantimonates and cations. Powder X-ray diffraction, elemental analysis, thermogravimetric analysis and IR spectroscopy were performed on SbW6 to prove the purity, to identify the water content and to characterize the vibrational modes of the crystallized phase.
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Affiliation(s)
- Kleanthi Sifaki
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090 Wien, Austria
| | - Nadiia I. Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090 Wien, Austria
| | - Gerald Giester
- Universität Wien, Fakultät für Geowissenschaften, Geographie und Astronomie, Institut für Mineralogie und Kristallographie, Althanstraße 14, 1090 Wien, Austria
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090 Wien, Austria
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104
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Jelinek L, Mištová E, Kubeil M, Stephan H. Polyoxometalates in Extraction and Sorption Processes. SOLVENT EXTRACTION AND ION EXCHANGE 2021. [DOI: 10.1080/07366299.2021.1874107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ludek Jelinek
- Department of Power Engineering, University of Chemistry and Technology, Prague 6, Czech Republic
| | - Eva Mištová
- Department of Power Engineering, University of Chemistry and Technology, Prague 6, Czech Republic
| | - Manja Kubeil
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
| | - Holger Stephan
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Dresden, Germany
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105
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Tanuhadi E, Gumerova NI, Prado-Roller A, Mautner A, Rompel A. Defect {(W VIO 7)W VI4} and Full {(W VIO 7)W VI5} Pentagonal Units as Synthons for the Generation of Nanosized Main Group V Heteropolyoxotungstates. Inorg Chem 2021; 60:8917-8923. [PMID: 34085528 PMCID: PMC8220499 DOI: 10.1021/acs.inorgchem.1c00810] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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We report on the
synthesis and characterization of three new nanosized
main group V heteropolyoxotungstates KxNay[H2(XWVI9O33)(WVI5O12)(X2WVI29O103)]·nH2O {X3W43} (x = 11, y = 16, and n = 115.5 for X = SbIII; x = 20, y = 7, and n = 68 for X = BiIII) and K8Na15[H16(CoII(H2O)2)0.9(CoII(H2O)3)2(WVI3.1O14)(SbIIIWVI9O33)(SbIII2WVI30O106)(H2O)]·53H2O {Co3Sb3W42}. On the basis of the key parameters for the one-pot
synthesis strategy of {Bi3W43}, a rational step-by-step
approach was developed using the known Krebs-type polyoxotungstate
(POT) K12[SbV2WVI22O74(OH)2]·27H2O {Sb2W22} as a nonlacunary precursor leading to the synthesis
and characterization of {Sb3W43} and {Co3Sb3W42}. Solid-state
characterization of the three new representatives {Bi3W43}, {Sb3W43}, and {Co3Sb3W42} by single-crystal
and powder X-ray diffraction (XRD), IR spectroscopy, thermogravimetric
analysis (TGA), energy-dispersive X-ray analysis (EDX), X-ray photoelectron
spectroscopy (XPS), and elemental analysis, along with characterization
in solution by UV/vis spectroscopy shows that {Bi3W43}, {Sb3W43}, and {Co3Sb3W42} represent the first
main group V heteropolyoxotungstates encapsulating a defect {(WVIO7)WVI4} ({X3W43}, X = BiIII and SbIII) or full
{(WVIO7)WVI5} ({Co3Sb3W42}) pentagonal
unit. With 43 tungsten metal centers, {X3W43} (X =
BiIII and SbIII) are the largest unsubstituted
tungstoantimonate– and bismuthate clusters reported to date.
By using time-dependent UV/vis spectroscopy, the isostructural representatives {Sb3W43} and {Bi3W43} were subjected
to a comprehensive study on their catalytic properties as homogeneous
electron-transfer catalysts for the reduction of K3[FeIII(CN)6] as a model substrate revealing up to 5.8
times higher substrate conversions in the first 240 min (35% for {Sb3W43}, 29% for {Bi3W43}) as
compared to the uncatalyzed reaction (<6% without catalyst after
240 min) under otherwise identical conditions. We report on the synthesis and characterization of three
new tungsten-based defect {(WVIO7)WVI4}KxNay[H2(XWVI9O33)(WVI5O12)(X2WVI29O103)]·nH2O {X3W43} (x = 11, y = 16, and n = 115.5 for X = SbIII; x = 20, y = 7, and n = 68 for BiIII)
or full pentagonal {(WVIO7)WVI5} unit K8Na15[H16(CoII(H2O)2)0.9(CoII(H2O)3)2(WVI3.1O14)(SbIIIWVI9O33)(SbIII2WVI30O106)(H2O)]·53H2O {Co3Sb3W42} encapsulating main group V representatives.
With 43 W centers, {Sb3W43} and {Bi3W43} exhibit the highest nuclearity among unsubstituted
tungstoantimonates and bismuthates reported to date. The catalytic
properties of {Sb3W43} and {Bi3W43} as homogeneous electron-transfer catalysts for the reduction
of K3[FeIII(CN)6] to K4[FeII(CN)6] was investigated.
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Affiliation(s)
- Elias Tanuhadi
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, 1090 Wien, Austria
| | - Nadiia I Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, 1090 Wien, Austria
| | - Alexander Prado-Roller
- Universität Wien, Fakultät für Chemie, Zentrum für Röntgenstrukturanalyse und Institut für Anorganische Chemie, 1090 Wien, Austria
| | - Andreas Mautner
- Universität Wien, Fakultät für Chemie, Polymer and Composite Engineering (PaCE) Group, Institute of Materials Chemistry and Research, 1090 Vienna, Austria
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, 1090 Wien, Austria
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106
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Martins FF, Sánchez‐González Á, Lanuza J, Miras HN, Lopez X, Bandeira NA, Gil A. Probing the Catalytically Active Species in POM‐Catalysed DNA‐Model Hydrolysis**. Chemistry 2021; 27:8977-8984. [DOI: 10.1002/chem.202004989] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Frederico F. Martins
- BioISI – Biosystems and Integrative Sciences Institute Departamento de Química e Bioquímica Faculdade de Ciências Universidade de Lisboa 8.5.53 C8 bdg, Campo Grande 1749-016 Lisboa Portugal
| | - Ángel Sánchez‐González
- BioISI – Biosystems and Integrative Sciences Institute Departamento de Química e Bioquímica Faculdade de Ciências Universidade de Lisboa 8.5.53 C8 bdg, Campo Grande 1749-016 Lisboa Portugal
| | - Jose Lanuza
- Polimero eta Material Aurreratuak: Fisika Kimika eta Teknologia Saila, Kimika Fakultatea Euskal Herriko Unibertsitatea (UPV/EHU) Paseo Manuel de Lardizabal 3 20018 Donostia-San Sebastián Spain
- Donostia International Physics Center (DIPC) Paseo Manuel de Lardizabal 4 20018 Donostia-San Sebastián Spain
| | - Haralampos N. Miras
- School of Chemistry University of Glasgow Joseph Black Building Glasgow G12 8QQ UK
| | - Xabier Lopez
- Polimero eta Material Aurreratuak: Fisika Kimika eta Teknologia Saila, Kimika Fakultatea Euskal Herriko Unibertsitatea (UPV/EHU) Paseo Manuel de Lardizabal 3 20018 Donostia-San Sebastián Spain
- Donostia International Physics Center (DIPC) Paseo Manuel de Lardizabal 4 20018 Donostia-San Sebastián Spain
| | - Nuno A. Bandeira
- BioISI – Biosystems and Integrative Sciences Institute Departamento de Química e Bioquímica Faculdade de Ciências Universidade de Lisboa 8.5.53 C8 bdg, Campo Grande 1749-016 Lisboa Portugal
| | - Adrià Gil
- BioISI – Biosystems and Integrative Sciences Institute Departamento de Química e Bioquímica Faculdade de Ciências Universidade de Lisboa 8.5.53 C8 bdg, Campo Grande 1749-016 Lisboa Portugal
- CIC nanoGUNE BRTA Tolosa Hiribidea 76 20018 Donostia - San Sebastian Euskadi Spain
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107
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Huang XH, Huang XX, Ying SM, Gong ZH, Gao XM, Bi WC, Chen YP, Sun YQ. Polyoxometalate-phosphonate compounds: Synthesis, structure, photocatalytic and antitumor properties. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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108
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Abstract
The application of metals in biological systems has been a rapidly growing branch of science. Vanadium has been investigated and reported as an anticancer agent. Melanoma is the most aggressive type of skin cancer, the incidence of which has been increasing annually worldwide. It is of paramount importance to identify novel pharmacological agents for melanoma treatment. Herein, a systematic review of publications including “Melanoma and Vanadium” was performed. Nine vanadium articles in several melanoma cells lines such as human A375, human CN-mel and murine B16F10, as well as in vivo studies, are described. Vanadium-based compounds with anticancer activity against melanoma include: (1) oxidovanadium(IV); (2) XMenes; (3) vanadium pentoxide, (4) oxidovanadium(IV) pyridinonate compounds; (5) vanadate; (6) polysaccharides vanadium(IV/V) complexes; (7) mixed-metal binuclear ruthenium(II)–vanadium(IV) complexes; (8) pyridoxal-based oxidovanadium(IV) complexes and (9) functionalized nanoparticles of yttrium vanadate doped with europium. Vanadium compounds and/or vanadium materials show potential anticancer activities that may be used as a useful approach to treat melanoma.
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109
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Deng L, Dong X, Zhou ZH. Intrinsic Molybdenum-Based POMOFs with Impressive Gas Adsorptions and Photochromism. Chemistry 2021; 27:9643-9653. [PMID: 33780577 DOI: 10.1002/chem.202100745] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Indexed: 11/06/2022]
Abstract
Novel molybdenum(VI/V) POM-based self-constructed frameworks [MoVI 12 O24 (μ2 -O)12 (trz)6 (H2 O)6 ] ⋅ 6Hma ⋅ 18H2 O (1, Htrz=1H-1,2,3-triazole, ma=methylamine), [MoVI 7 O14 (μ2 -O)8 (trz)5 (H2 O)] ⋅ 7Hma ⋅ 5H2 O (2), Na3 [MoV 6 O6 (μ2 -O)9 (Htrz)3 (trz)3 ] ⋅ 7.5H2 O (3) and [MoV 8 O8 (μ2 -O)12 (Htrz)8 ] ⋅ 30H2 O (4) have been covalently decorated with tri-coordinated deprotonated/protonated 1,2,3-triazoles. Channels with an inner diameter of 7.5 Å were found in 1, whereas a tunnel composed of stacking molecules with an inner diameter of 4.1 Å along the b-axis exists in 2; it is occupied by free disordered methylamines, showing selective adsorption of O2 and CO2 at 25 °C. Obvious downfield shifts were observed by 13 C NMR spectroscopies for methylamines inside the confined channels in 1 and 2. There are diversified pores in 3 and 4, which are formed by the molecules themselves and intermolecular accumulations. Adsorption tests indicate that 3 and 4 are fine adsorption materials for CH4 and CO2 under low pressure that rely on the environments built by the POMs. Correspondingly, 1 and 2 display reversible photoresponsive thermochromism that is subtlety influenced by the channels. The polyoxometalate organic frameworks (POMOFs) with multiple functional adsorptions are easy to assemble. Their photo-/thermoresponse properties offer a new pathway for the self-constructions of one-off hybrid materials that possess the good properties of both POMs and MOFs.
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Affiliation(s)
- Lan Deng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P. R. China
| | - Xin Dong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P. R. China
| | - Zhao-Hui Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, Fujian, P. R. China
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110
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Azambuja FD, Moons J, Parac-Vogt TN. The Dawn of Metal-Oxo Clusters as Artificial Proteases: From Discovery to the Present and Beyond. Acc Chem Res 2021; 54:1673-1684. [PMID: 33600141 DOI: 10.1021/acs.accounts.0c00666] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The selective cleavage of peptide bonds in proteins is of paramount importance in many areas of the biological and medical sciences, playing a key role in protein structure/function/folding analysis, protein engineering, and targeted proteolytic drug design. Current applications that depend on selective protein hydrolysis largely rely on costly proteases such as trypsin, which are sensitive to the pH, ionic strength, and temperature conditions. Moreover, >95% of peptides deposited in databases are generated from trypsin digests, restricting the information within the analyzed proteomes. On the other hand, harsh and toxic chemical reagents such as BrCN are very active but cause permanent modifications of certain amino acid residues. Consequently, transition-metal complexes have emerged as smooth and selective artificial proteases owing to their ability to provide larger fragments and complementary structural information. In the past decade, our group has discovered the unique protease activity of diverse metal-oxo clusters (MOC) and pioneered a distinctive approach to the development of selective artificial proteases. In contrast to classical coordination complexes which often depend on amino acid side chains to control the regioselectivity, the selectivity profile of MOCs is determined by a complex combination of structural factors, such as the protein surface charge, metal coordination to specific side chains, and hydrogen bonding between the protein surface and the MOC scaffold.In this Account, we present a critical overview of our detailed kinetic, spectroscopic, and crystallographic studies in MOC-assisted peptide bond hydrolysis, from its origins to the current rational and detailed mechanistic understanding. To this end, reactivity trends related to the structure and properties of MOCs based on the hydrolysis of small model peptides and key structural aspects governing the selectivity of protein hydrolysis are presented. Finally, our endeavors in seeking the next generation of heterogeneous MOC-based proteases are briefly discussed by embedding MOCs in metal-organic frameworks or using them as discrete nanoclusters in the development of artificial protease-like materials (i.e., nanozymes). The deep and comprehensive understanding sought experimentally and theoretically over the years in aqueous systems with intrinsic polar and charged substrates provides a unique view of the reactivity between inorganic moieties and biomolecules, thereby broadly impacting several different fields (e.g., catalysis in biochemistry, inorganic chemistry, and organic chemistry).
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Affiliation(s)
| | - Jens Moons
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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111
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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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112
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Postal K, Santana FS, Hughes DL, Rüdiger AL, Ribeiro RR, Sá EL, de Souza EM, Soares JF, Nunes GG. Stability in solution and chemoprotection by octadecavanadates(IV/V) in E. coli cultures. J Inorg Biochem 2021; 219:111438. [PMID: 33823363 DOI: 10.1016/j.jinorgbio.2021.111438] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 03/20/2021] [Accepted: 03/20/2021] [Indexed: 11/25/2022]
Abstract
Two mixed-valence octadecavanadates, (NH4)2(Me4N)5[VIV12VV6O42I]·Me4NI·5H2O (V18I) and [{K6(OH2)12VIV11VV7O41(PO4)·4H2O}n] (V18P), were synthesized and characterized by single-crystal X-ray diffraction analysis and FTIR, Raman, 51V NMR, EPR and UV/Vis/NIR spectroscopies. The chemoprotective activity of V18I and V18P towards the alkylating agent diethyl sulfate was assessed in E. coli cultures. The complex V18I was nontoxic in concentrations up to 5.0 mmol L-1, while V18P presented moderate toxicity in the concentration range 0.10 - 10 mmol L-1. Conversely, a ca. 35% enhancement in culture growth as compared to cells treated only with diethyl sulfate was observed upon addition of V18I (0.10 to 2.5 mmol L-1), while the combination of diethyl sulfate with V18P increased the cytotoxicity presented by diethyl sulfate alone. 51V NMR and EPR speciation studies showed that V18I is stable in solution, while V18P suffers partial breakage to give low nuclearity oxidometalates of vanadium(V) and (IV). According to the results, the chemoprotective effect depends strongly on the direct reactivity of the polyoxidovanadates (POV) towards the alkylating agent. The reaction of diethyl sulfate with V18I apparently produces a new, rearranged POV instead of poorly-reactive breakage products, while V18P shows the formation and subsequent consumption of low-nuclearity species. The correlation of this chemistry with that of other mixed-valence polyoxidovanadates, [H6VIV2VV12O38PO4]5- (V14) and [VIV8VV7O36Cl]6- (V15), suggests a relationship between stability in solution and chemoprotective performance.
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Affiliation(s)
- Kahoana Postal
- Departamento de Química, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | | | - David L Hughes
- School of Chemistry, University of East Anglia, Norwich NR4 7TJ, UK
| | - André L Rüdiger
- Departamento de Química, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Ronny R Ribeiro
- Departamento de Química, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Eduardo L Sá
- Departamento de Química, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Emanuel M de Souza
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Jaísa F Soares
- Departamento de Química, Universidade Federal do Paraná, Curitiba, PR, Brazil
| | - Giovana G Nunes
- Departamento de Química, Universidade Federal do Paraná, Curitiba, PR, Brazil.
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113
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Wan R, Liu Z, Ma X, Li H, Ma P, Zhang C, Niu J, Wang J. Discovery of two Na +-centered Silverton-type polyoxometalates {NaM 12O 42} (M = Mo, W). Chem Commun (Camb) 2021; 57:2172-2175. [PMID: 33524095 DOI: 10.1039/d0cc07590f] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two new members of highly charged Silverton archetype [NaM12O42]11- were demonstrated in the 3D POM-based frameworks Na3[NaM12O42(Ru(DMSO)3)4]·13H2O (M = Mo (1), W (2)), where the unusual icosahedron coordination of a Na+ ion incubated as a heteroatom is reported for the first time in topical POMs. Furthermore, 23Na NMR was applied to certify the interpretation of X-ray diffraction data concerning Na localization. Additionally, the porous nature of the frameworks 1 and 2 has also been investigated.
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Affiliation(s)
- Rong Wan
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Zhen Liu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Xinyi Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Huafeng Li
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Chao Zhang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
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114
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Svensson FG, Kessler VG. Interaction between dopamine and the [HPW12O40]2−Keggin ion–an X-ray and NMR study. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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115
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Tandekar K, Naulakha P, Supriya S. Coating Keplerate based host-guest material PMo12O40 @{Mo72Fe30} surface with silver iron molybdate. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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116
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Qu X, Shi D, Fu Y, Chu D, Yang Y, Liu Y. Enhanced antitumor activity of polyoxometalates loaded solid lipid nanoparticles. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2020.108411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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117
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Tagliavini V, Honisch C, Serratì S, Azzariti A, Bonchio M, Ruzza P, Carraro M. Enhancing the biological activity of polyoxometalate-peptide nano-fibrils by spacer design. RSC Adv 2021; 11:4952-4957. [PMID: 35424453 PMCID: PMC8694496 DOI: 10.1039/d0ra10218k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 01/16/2021] [Indexed: 01/18/2023] Open
Abstract
Polyoxometalates (POMs) and peptides can be conjugated to yield novel bio-hybrids with potential application as nanodrugs. However, the observed POM-induced folding of the peptide prevents its availability towards biological targets. An Anderson-Evans POM was functionalized with a bombesin analog peptide and engineered by adding a tailored hydrophilic and anionic spacer between the two moieties, to make the targeting sequence more accessible and enable an unprecedented cancer cell recognition capability.
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Affiliation(s)
- Valeria Tagliavini
- Department of Chemical Sciences, Institute on Membrane Technology of CNR, University of Padova Padova Italy
| | - Claudia Honisch
- Institute of Biomolecular Chemistry of CNR Padova Unit Padova Italy
| | - Simona Serratì
- Nanotechnology Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II" Viale Orazio Flacco, 65 70124 Bari Italy
| | - Amalia Azzariti
- Experimental Pharmacology Laboratory, IRCCS Istituto Tumori "Giovanni Paolo II" Viale Orazio Flacco, 65 70124 Bari Italy
| | - Marcella Bonchio
- Department of Chemical Sciences, Institute on Membrane Technology of CNR, University of Padova Padova Italy
| | - Paolo Ruzza
- Institute of Biomolecular Chemistry of CNR Padova Unit Padova Italy
| | - Mauro Carraro
- Department of Chemical Sciences, Institute on Membrane Technology of CNR, University of Padova Padova Italy
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118
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Kostenkova K, Arhouma Z, Postal K, Rajan A, Kortz U, Nunes GG, Crick DC, Crans DC. Pt IV- or Mo VI-substituted decavanadates inhibit the growth of Mycobacterium smegmatis. J Inorg Biochem 2021; 217:111356. [PMID: 33582396 DOI: 10.1016/j.jinorgbio.2021.111356] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/07/2021] [Accepted: 01/12/2021] [Indexed: 10/22/2022]
Abstract
Inhibitory effects of two monosubstituted decavanadates by PtIV in monoplatino(IV)nonavanadate(V) ([H2PtIVV9O28]5-, V9Pt), and by MoIV in monomolybdo(VI)nonavanadate(V) ([MoVIV9O28]5-,V9Mo) were investigated against the growth of Mycobacterium smegmatis with the EC50 values of 0.0048 mM and 0.015 mM, respectively. These compare to the reported inhibitory value for decavanadate ([V10O28]6-/[HV10O28]5-, V10) on Mycobacterium smegmatis (EC50 = 0.0037 mM). Time-dependent 51V NMR spectroscopic studies were carried out for all three polyanions in aqueous solution, biological medium (7H9), heated and non-heated supernatant to evaluate their stability in their respective media, monitor their hydrolysis to form various oxovanadates over time and calculate the EC50 values. These studies allow us to calculate adjusted and maximum EC50 for the polyoxovanadate (POV) present in solution at the beginning of the study when there is most intact anion in the media and thus the EC50 values represent the initial effects of the POVs. The results have shown that V10 is 1.3 times more potent than V9Pt and 4 times more potent than V9Mo, indicating that the inhibitory effects of monosubstituted polyanions are related to the V10 structure. We attributed the minor differences in the growth inhibitory effects to the differences in charges (5- vs 6-) of V9Pt and V9Mo compared to V10 and/or the differences in the chemical composition. We concluded that the potency of the growth inhibition by V10 is mainly due to the chemical properties of the vanadium and the decametalate's unique structure even though the presence of the Mycobacterium smegmatis facilitate hydrolysis of the anions. SYNOPSIS: Two decavanadate derivatives, monoplatino(IV)nonavanadate(V) ([H2PtIVV9O28]5-), monomolybdo(VI)nonavanadate(V) ([MoVIV9O28]5-) and decavanadate are more potent growth inhibitors of Mycobacterium smegmatis than monomeric vanadate. The spectroscopic characterization carried out in the growth medium led to the conclusion that both the decavanadate structure and its properties are important for its growth effects.
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Affiliation(s)
- Kateryna Kostenkova
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States
| | - Zeyad Arhouma
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, United States
| | - Kahoana Postal
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States; Department of Chemistry, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Ananthu Rajan
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry, Jacobs University, 28759 Bremen, Germany
| | - Giovana G Nunes
- Department of Chemistry, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Dean C Crick
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, United States; Microbiology, Immunology, and Pathology Department, Colorado State University, Fort Collins, CO 80523, United States
| | - Debbie C Crans
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, United States; Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, United States.
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Soria‐Carrera H, Franco‐Castillo I, Romero P, Martín S, Fuente JM, Mitchell SG, Martín‐Rapún R. On‐POM Ring‐Opening Polymerisation of
N
‐Carboxyanhydrides. Angew Chem Int Ed Engl 2021; 60:3449-3453. [DOI: 10.1002/anie.202013563] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Héctor Soria‐Carrera
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
| | - Isabel Franco‐Castillo
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
| | - Pilar Romero
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Santiago Martín
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- Departamento de Química Física Facultad de Ciencias Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Jesús M. Fuente
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
| | - Scott G. Mitchell
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
| | - Rafael Martín‐Rapún
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
- Departamento de Química Orgánica Facultad de Ciencias Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
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120
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Soria‐Carrera H, Franco‐Castillo I, Romero P, Martín S, Fuente JM, Mitchell SG, Martín‐Rapún R. On‐POM Ring‐Opening Polymerisation of
N
‐Carboxyanhydrides. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Héctor Soria‐Carrera
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
| | - Isabel Franco‐Castillo
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
| | - Pilar Romero
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Santiago Martín
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- Departamento de Química Física Facultad de Ciencias Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Jesús M. Fuente
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
| | - Scott G. Mitchell
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
| | - Rafael Martín‐Rapún
- Instituto de Nanociencia y Materiales de Aragón (INMA) CSIC-Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
- CIBER de Bioingeniería, Biomateriales y Nanomedicina Instituto de Salud Carlos III 28029 Madrid Spain
- Departamento de Química Orgánica Facultad de Ciencias Universidad de Zaragoza c/ Pedro Cerbuna 12 50009 Zaragoza Spain
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121
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Synthesis, Physical Properties and Application of a Series of New Polyoxometalate-Based Ionic Liquids. Molecules 2021; 26:molecules26020496. [PMID: 33477711 PMCID: PMC7831901 DOI: 10.3390/molecules26020496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 11/18/2022] Open
Abstract
This paper deals with the preparation and the characterization of four new ionic liquids resulting from the pairing of various polyoxotungstates or polyoxomolybdates with the cation trihexyltetradecylphosphonium. The physical properties measured by different techniques evidence that the viscosity and the rheological behaviors of such POM-based ionic liquids, POM-ILs, strongly depend on the nature of the POM, especially its charge. Playing on the nature of the POM, we can indeed obtain Newtonian liquids or some much more viscous materials exhibiting characteristics of resins or pseudo-plastics. In a second part of this study, the potentialities of using such materials both as solvent and catalyst for the oxidation of a series of alcohols are presented as proof of concept. This part highlights great differences in strength and selectivity as a function of the POM-IL used. Furthermore, a very simple way to recycle the catalyst is also presented.
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122
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Carter OWL, Xu Y, Sadler PJ. Minerals in biology and medicine. RSC Adv 2021; 11:1939-1951. [PMID: 35424161 PMCID: PMC8693805 DOI: 10.1039/d0ra09992a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 12/21/2020] [Indexed: 01/08/2023] Open
Abstract
Natural minerals ('stone drugs') have been used in traditional Chinese medicines for over 2000 years, but there is potential for modern-day use of inorganic minerals to combat viral infections, antimicrobial resistance, and for other areas in need of new therapies and diagnostic aids. Metal and mineral surfaces on scales from milli-to nanometres, either natural or synthetic, are patterned or can be modified with hydrophilic/hydrophobic and ionic/covalent target-recognition sites. They introduce new strategies for medical applications. Such surfaces have novel properties compared to single metal centres. Moreover, 3D mineral particles (including hybrid organo-minerals) can have reactive cavities, and some minerals have dynamic movement of metal ions, anions, and other molecules within their structures. Minerals have a unique ability to interact with viruses, microbes and macro-biomolecules through multipoint ionic and/or non-covalent contacts, with potential for novel applications in therapy and biotechnology. Investigations of mineral deposits in biology, with their often inherent heterogeneity and tendency to become chemically-modified on isolation, are highly challenging, but new methods for their study, including in intact tissues, hold promise for future advances.
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Affiliation(s)
- Oliver W L Carter
- Department of Chemistry, University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
- MAS CDT, Senate House, University of Warwick Coventry CV4 7AL UK
| | - Yingjian Xu
- GoldenKeys High-Tech Materials Co., Ltd, Building B, Innovation & Entrepreneurship Park Guian New Area Guizhou Province 550025 China
| | - Peter J Sadler
- Department of Chemistry, University of Warwick Gibbet Hill Road Coventry CV4 7AL UK
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123
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Tanuhadi E, Gumerova NI, Prado-Roller A, Galanski M, Čipčić-Paljetak H, Verbanac D, Rompel A. Aluminum-Substituted Keggin Germanotungstate [HAl(H 2O)GeW 11O 39] 4-: Synthesis, Characterization, and Antibacterial Activity. Inorg Chem 2021; 60:28-31. [PMID: 33332970 PMCID: PMC7788568 DOI: 10.1021/acs.inorgchem.0c03311] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
We report on the new monosubstituted
aluminum Keggin-type germanotungstate
(C4H12N)4[HAlGeW11O39(H2O)]·11H2O ([Al(H2O)GeW11]4–), which has been
synthesized at room temperature via rearrangement of the dilacunary
[γ-GeW10O36]8– polyoxometalate
precursor. [Al(H2O)GeW11]4– has been characterized thoroughly both in the solid state
by single-crystal and powder X-ray diffraction, IR spectroscopy, thermogravimetric
analysis, and elemental analysis as well as in solution by cyclic
voltammetry (CV) 183W, 27Al NMR and UV–vis
spectroscopy. A study on the antibacterial properties of [Al(H2O)GeW11]4– and the known aluminum(III)-centered
Keggin polyoxotungstates (Al-POTs) α-Na5[AlW12O40] (α-[AlW12O40]5–) and Na6[Al(AlOH2)W11O39] ([Al(AlOH2)W11O39]6–) revealed enhanced activity for all three Al-POTs against the Gram-negative
bacterium Moraxella catarrhalis (minimum inhibitory
concentration (MIC) up to 4 μg mL–1) and the
Gram-positive Enterococcus faecalis (MIC up to 128
μg mL–1) compared to the inactive Al(NO3)3 salt (MIC > 256 μg mL–1). CV indicates the redox activity of the Al-POTs as a dominating
factor for the observed antibacterial activity with increased tendency
to reduction, resulting in increased antibacterial activity of the
POT. We report on the synthesis and thorough
characterization
of the new monosubstituted aluminum germanotungstate (C4H12N)4[HAlGeW11O39(H2O)]·11H2O ([Al(H2O)GeW11]4−), which has been subjected to an antibacterial
study including the previously reported α-Na5[AlW12O40] and Na6[Al(AlOH2)W11O39]. All three aluminum-substituted polyoxotungstates
(Al-POTs) revealed enhanced activity against Moraxella catarrhalis and Enterococcus faecalis compared to the inactive
Al(NO3)3 salt. On the basis of cyclic voltammetry
studies, the redox activity of the POTs is suggested to have an impact
on their overall antibacterial activity.
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Affiliation(s)
- Elias Tanuhadi
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, 1090 Wien, Austria
| | - Nadiia I Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, 1090 Wien, Austria
| | - Alexander Prado-Roller
- Universität Wien, Fakultät für Chemie, Institut für Anorganische Chemie und Zentrum für Röntgenstrukturanalyse, Währinger Strasse 42, 1090 Wien, Austria
| | - Markus Galanski
- Universität Wien, Fakultät für Chemie, Institut für Anorganische Chemie und NMR Zentrum, Währinger Strasse 42, 1090, 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, 10000 Zagreb, Croatia
| | - Donatella Verbanac
- Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, 1090 Wien, Austria
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124
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Sciortino G, Aureliano M, Garribba E. Rationalizing the Decavanadate(V) and Oxidovanadium(IV) Binding to G-Actin and the Competition with Decaniobate(V) and ATP. Inorg Chem 2021; 60:334-344. [PMID: 33253559 PMCID: PMC8016201 DOI: 10.1021/acs.inorgchem.0c02971] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The experimental data collected over the past 15 years on the interaction of decavanadate(V) (V10O286-; V10), a polyoxometalate (POM) with promising anticancer and antibacterial action, with G-actin, were rationalized by using several computational approaches (docking, density functional theory (DFT), and molecular dynamics (MD)). Moreover, a comparison with the isostructural and more stable decaniobate(V) (Nb10O286-; Nb10) was carried out. Four binding sites were identified, named α, β, γ, and δ, the site α being the catalytic nucleotide site located in the cleft of the enzyme at the interface of the subdomains II and IV. It was observed that the site α is preferred by V10, whereas Nb10 is more stable at the site β; this indicates that, differently from other proteins, G-actin could contemporaneously bind the two POMs, whose action would be synergistic. Both decavanadate and decaniobate induce conformational rearrangements in G-actin, larger for V10 than Nb10. Moreover, the binding mode of oxidovanadium(IV) ion, VIVO2+, formed upon the reduction of decavanadate(V) by the -SH groups of accessible cysteine residues, is also found in the catalytic site α with (His161, Asp154) coordination; this adduct overlaps significantly with the region where ATP is bound, accounting for the competition between V10 and its reduction product VIVO2+ with ATP, as previously observed by EPR spectroscopy. Finally, the competition with ATP was rationalized: since decavanadate prefers the nucleotide site α, Ca2+-ATP displaces V10 from this site, while the competition is less important for Nb10 because this POM shows a higher affinity for β than for site α. A relevant consequence of this paper is that other metallodrug-protein systems, in the absence or presence of eventual inhibitors and/or competition with molecules of the organism, could be studied with the same approach, suggesting important elements for an explanation of the biological data and a rational drug design.
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Affiliation(s)
- Giuseppe Sciortino
- Dipartimento
di Chimica e Farmacia, Università
di Sassari, Via Vienna 2, I-07100 Sassari, Italy
- Institute
of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans, 16, 43007 Tarragona, Spain
- (G.S.) Phone +34 977 920229. Email
| | - Manuel Aureliano
- CCMar,
FCT, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 8000-139 Faro, Portugal
- (M.A.) Phone +351 289 800977. Email
| | - Eugenio Garribba
- Dipartimento
di Chimica e Farmacia, Università
di Sassari, Via Vienna 2, I-07100 Sassari, Italy
- (E.G.) Phone +39 079 229487. Email
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125
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Sabarinathan C, Karthikeyan M, Murugappan RM, Anthony SP, Shankar B, Parthasarathy K, Arumuganathan T. Polyoxometalate based ionic crystal: dual applications in selective colorimetric sensor for hydrated ZnCl 2 and antimicrobial activity. NEW J CHEM 2021. [DOI: 10.1039/d1nj00138h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One-pot synthesis of POM-salt ([Himi]4[SiMo12O40] (1)) was achieved by mixing silicomolybdic acid and imidazole in acidic conditions and characterized by FTIR, TGA, SEM, EDX, ICP-OES and XPS.
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Affiliation(s)
- C. Sabarinathan
- PG & Research Department of Chemistry
- Thiagarajar College
- Madurai-625 009
- India
| | - M. Karthikeyan
- Department of Zoology and Microbiology
- Thiagarajar College
- Madurai-625 009
- India
| | - R. M. Murugappan
- Department of Zoology and Microbiology
- Thiagarajar College
- Madurai-625 009
- India
| | | | - Bhaskaran Shankar
- Department of Chemistry
- Sethu Institute of Technology
- Kariapatti-626 115
- India
| | - Kannabiran Parthasarathy
- Animal & Mineral Origin Drug Research Laboratory (AMDRL)
- Siddha Central Research Institute
- Chennai-600 106
- India
| | - T. Arumuganathan
- PG & Research Department of Chemistry
- Thiagarajar College
- Madurai-625 009
- India
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126
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Xing C, Ma P, Zhao M, Chang J, Guo X, Sun L, Li M. Facile and green synthesis of decatungstate-based nickel( ii) complex coated onto modified Fe 3O 4 nanoparticles with enhanced antimicrobial activity against antibiotic-resistant bacteria. CrystEngComm 2021. [DOI: 10.1039/d1ce00421b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A nanostructured Fe3O4@PDA@Ni-DT composite was successfully prepared with high-efficiency antibacterial properties and excellent recyclable performance.
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Affiliation(s)
- Cuili Xing
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Meng Zhao
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jiangnan Chang
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Xiaoyuan Guo
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Lin Sun
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Mingxue Li
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
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127
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Zhang YY, Hu M, Shao Z, Huang C, Qin Q, Mi L. Keggin-type polyoxometalate-containing metal–organic hybrids as friction materials for triboelectric nanogenerators. CrystEngComm 2021. [DOI: 10.1039/d1ce00332a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The POM-based inorganic–organic hybrids with different structures were assembled and used as the friction materials to construct TENGs and the results demonstrated that the output performance was closely related to the dielectric constant.
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Affiliation(s)
- Ying-Ying Zhang
- Center for Advanced Materials Research
- Henan Key Laboratory of Functional Salt Materials
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
| | - Mingjun Hu
- Center for Advanced Materials Research
- Henan Key Laboratory of Functional Salt Materials
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
| | - Zhichao Shao
- Center for Advanced Materials Research
- Henan Key Laboratory of Functional Salt Materials
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
| | - Chao Huang
- Center for Advanced Materials Research
- Henan Key Laboratory of Functional Salt Materials
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
| | - Qi Qin
- Center for Advanced Materials Research
- Henan Key Laboratory of Functional Salt Materials
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
| | - Liwei Mi
- Center for Advanced Materials Research
- Henan Key Laboratory of Functional Salt Materials
- Zhongyuan University of Technology
- Zhengzhou
- P. R. China
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128
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Ugone V, Sanna D, Ruggiu S, Sciortino G, Garribba E. Covalent and non-covalent binding in vanadium–protein adducts. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01308k] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An integrated method, generalizable to any metals and proteins, based on ESI-MS, EPR and molecular modelling was applied to study the covalent and non-covalent binding of the potential drug [VIVO(nalidixato)2(H2O)] to lysozyme and cytochrome c.
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Affiliation(s)
- Valeria Ugone
- Istituto CNR di Chimica Biomolecolare
- I-07100 Sassari
- Italy
| | - Daniele Sanna
- Istituto CNR di Chimica Biomolecolare
- I-07100 Sassari
- Italy
| | - Simone Ruggiu
- Dipartimento di Chimica e Farmacia
- Università di Sassari
- I-07100 Sassari
- Italy
| | - Giuseppe Sciortino
- Dipartimento di Chimica e Farmacia
- Università di Sassari
- I-07100 Sassari
- Italy
- Institute of Chemical Research of Catalonia (ICIQ)
| | - Eugenio Garribba
- Dipartimento di Chimica e Farmacia
- Università di Sassari
- I-07100 Sassari
- Italy
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129
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Rajkowska K, Koziróg A, Otlewska A, Piotrowska M, Atrián-Blasco E, Franco-Castillo I, Mitchell SG. Antifungal Activity of Polyoxometalate-Ionic Liquids on Historical Brick. Molecules 2020; 25:molecules25235663. [PMID: 33271794 PMCID: PMC7729500 DOI: 10.3390/molecules25235663] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 11/20/2020] [Accepted: 11/26/2020] [Indexed: 01/06/2023] Open
Abstract
Moulds inhabiting mineral-based materials may cause their biodeterioration, contributing to inestimable losses, especially in the case of cultural heritage objects and architectures. Fungi in mouldy buildings may also pose a threat to human health and constitute the main etiological factor in building related illnesses. In this context, research into novel compounds with antifungal activity is of high importance. The aim of this study was to evaluate the antifungal activity of polyoxometalate-ionic liquids (POM-ILs) and their use in the eradication of moulds from historical brick. In the disc diffusion assay, all the tested POM-ILs inhibited growth of a mixed culture of moulds including Engyodontium album, Cladosporium cladosporioides, Alternaria alternata and Aspergillus fumigatus. These were isolated from the surfaces of historical brick barracks at the Auschwitz II-Birkenau State Museum in Oświęcim, Poland. POM-IL coatings on historical brick samples, under model conditions, showed that two compounds demonstrated very high antifungal activity, completely limiting mould growth and development. The antifungal activity of the POM-ILs appeared to stem from their toxic effects on conidia, as evidenced by environmental scanning transmission electron microscopy observations. The results herein indicated that POM-ILs are promising disinfectant materials for use not only on historical objects, but probably also on other mineral-based materials.
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Affiliation(s)
- Katarzyna Rajkowska
- Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Wólczańska 171/173, 90-924 Lodz, Poland; (A.K.); (A.O.); (M.P.)
- Correspondence: (K.R.); (S.G.M.)
| | - Anna Koziróg
- Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Wólczańska 171/173, 90-924 Lodz, Poland; (A.K.); (A.O.); (M.P.)
| | - Anna Otlewska
- Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Wólczańska 171/173, 90-924 Lodz, Poland; (A.K.); (A.O.); (M.P.)
| | - Małgorzata Piotrowska
- Institute of Fermentation Technology and Microbiology, Lodz University of Technology, Wólczańska 171/173, 90-924 Lodz, Poland; (A.K.); (A.O.); (M.P.)
| | - Elena Atrián-Blasco
- Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas-Universidad de Zaragoza, 50009 Zaragoza, Spain; (E.A.-B.); (I.F.-C.)
- Center for Biomedical Research Network-Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Isabel Franco-Castillo
- Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas-Universidad de Zaragoza, 50009 Zaragoza, Spain; (E.A.-B.); (I.F.-C.)
- Center for Biomedical Research Network-Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Scott G. Mitchell
- Instituto de Nanociencia y Materiales de Aragón (INMA), Consejo Superior de Investigaciones Científicas-Universidad de Zaragoza, 50009 Zaragoza, Spain; (E.A.-B.); (I.F.-C.)
- Center for Biomedical Research Network-Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Correspondence: (K.R.); (S.G.M.)
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130
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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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131
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Peng Q, Chen J, Zeng Z, Wang T, Xiang L, Peng X, Liu J, Zeng H. Adhesive Coacervates Driven by Hydrogen-Bonding Interaction. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2004132. [PMID: 33006447 DOI: 10.1002/smll.202004132] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/27/2020] [Indexed: 06/11/2023]
Abstract
Coacervation plays a critical role in numerous biological activities such as constructing biological tissues and achieving robust wet adhesion of marine sessile organisms, which conventionally occurs when oppositely charged polyelectrolytes are mixed in aqueous solutions driven by electrostatic attraction. Here, a novel type of adhesive coacervate is reported, driven by hydrogen-bonding interactions, readily formed by mixing silicotungstic acid and nonionic polyethylene glycol in water, providing a new approach for developing coacervates from nonionic systems. The as-prepared coacervate is easily paintable underwater, show strong wet adhesion to diverse substrates, and has been successfully applied as a hemostatic agent to treat organ injuries without displaying hemolytic activity, while with inherent antimicrobial properties thus avoiding inflammations and infections due to microorganism accumulation. This work demonstrates that coacervation can occur in salt-free environments via non-electrostatic interactions, providing a new platform for engineering multifunctional coacervate materials as tissue glues, wound dressings and membrane-free cell systems.
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Affiliation(s)
- Qiongyao Peng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Jingsi Chen
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Zicheng Zeng
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510700, China
| | - Tao Wang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Li Xiang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Xuwen Peng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Jifang Liu
- The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, 510700, China
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
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132
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Tanuhadi E, Al-Sayed E, Roller A, Čipčić-Paljetak H, Verbanac D, Rompel A. Synthesis, Characterization, and Phosphoesterase Activity of a Series of 4f- and 4d-Sandwich-Type Germanotungstates [( n-C 4H 9) 4N] l/mH 2[(M(H 2O) 3)(γ-GeW 10O 35) 2] (M = Ce III, Nd III, Gd III, Er III, l = 7; Zr IV, m = 6). Inorg Chem 2020; 59:14078-14084. [PMID: 32945651 PMCID: PMC7539296 DOI: 10.1021/acs.inorgchem.0c01852] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
![]()
We report on a family of five new
4f- and 4d-doped sandwich-type
germanotungstates with the general formula [(n-C4H9)4N]l/mH2[(M(H2O)3)(γ-GeW10O35)2]·3(CH3)2CO [M(H2O)3(GeW10)2] (M = CeIII, NdIII, GdIII, ErIII, l = 7; ZrIV, m = 6), which have been synthesized
at room temperature in an acetone–water mixture. Among the
compound series, [Zr(H2O)3(GeW10)2]8–, which has been obtained in the
presence of 30% H2O2, represents the first example
of a 4d-substituted germanotungstate incorporating the intact dilacunary
[γ-GeIVW10O36]8– building block. All compounds were characterized thoroughly in the
solid state by single-crystal and powder X-ray diffraction (XRD),
IR spectroscopy, thermogravimetric analysis (TGA), and elemental analysis
and in solution by NMR and UV–vis spectroscopy. The phosphoesterase
activity of [Ce(H2O)3(GeW10)2]9– and [Zr(H2O)3(GeW10)2]8– toward the model substrates 4-nitrophenyl phosphate (NPP)
and O,O-dimethyl O-(4-nitrophenyl) phosphate (DMNP) was monitored with 1H- and 31P-NMR spectroscopy revealing an acceleration
of the hydrolytic reaction by an order of magnitude (kcorr = 3.44 (±0.30) × 10–4 min–1 for [Ce(H2O)3(GeW10)2]9– and kcorr = 5.36 (±0.05) × 10–4 min–1 for [Zr(H2O)3(GeW10)2]8–) as compared to the uncatalyzed reaction (kuncat = 2.60 (±0.10) × 10–5 min–1). [Ce(H2O)3(GeW10)2]9– demonstrated improved antibacterial
activity toward Moraxella catarrhalis (MIC 32 μg/mL),
compared to the unsubstituted [GeW10O36]8– POM (MIC 64 μg/mL). We report on the synthesis and characterization of five
new monosubstituted 4f- and 4d-germanotungstates [(n-C4H9)4N]l/mH2[(M(H2O)3)(γ-GeW10O35)2]·3(CH3)2CO [M(H2O)3(GeW10)2] (M = CeIII, NdIII, GdIII, ErIII, l = 7; ZrIV; m = 6). The phosphoesterase properties of [Ce(H2O)3(GeW10)2]9− and [Zr(H2O)3(GeW10)2]8− were
investigated by probing the hydrolytic activity toward 4-nitrophenyl
phosphate (NPP) and O,O-dimethyl O-(4-nitrophenyl) phosphate (DMNP). Antibacterial tests
revealed inhibiting activity of [Ce(H2O)3(GeW10)2]9− against Moraxella
catarrhalis.
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Affiliation(s)
- Elias Tanuhadi
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien, 1090 Wien, Austria
| | - Emir Al-Sayed
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien, 1090 Wien, Austria
| | - Alexander Roller
- Fakultät für Chemie, Zentrum für Röntgenstrukturanalyse, Universität Wien, 1090 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, 10000 Zagreb, Croatia
| | - Donatella Verbanac
- Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia
| | - Annette Rompel
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien, 1090 Wien, Austria
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133
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Janićijević D, Uskoković-Marković S, Ranković D, Milenković M, Jevremović A, Nedić Vasiljević B, Milojević-Rakić M, Bajuk-Bogdanović D. Double active BEA zeolite/silver tungstophosphates - Antimicrobial effects and pesticide removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 735:139530. [PMID: 32473436 DOI: 10.1016/j.scitotenv.2020.139530] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/13/2020] [Accepted: 05/16/2020] [Indexed: 06/11/2023]
Abstract
Novel composites of BEA zeolite and silver tungstophosphate were prepared by different procedures: two-step impregnation, ion-exchange, and as physical mixtures with varying component mass ratios. Composites were characterized using Atomic force microscopy, Infrared, Raman and Atomic absorption spectroscopy, and results were related to adsorption properties and antimicrobial efficiencies of the composites. Prepared samples were tested as antimicrobial agents for fungal and different bacterial strains, as well as for adsorbents for pesticide nicosulfuron in aqueous solutions by using High-performance liquid chromatography. Experimental conditions for batch adsorption testing were optimized in order to efficiently eliminate nicosulfuron from aqueous solutions, while enabling antimicrobial activity of these advanced materials. Antimicrobial efficiency of composites was verified, and indicated that silver ion persistence in the solid phase is of utmost significance for the antimicrobial activity. Spectroscopic investigation revealed interaction of the silver tungstophosphate active phase and the zeolite framework, giving evidence of uniform distribution of active sites in the synthesized materials that proved to be essential for adsorption application. The best obtained adsorption capacity, as well as highest antimicrobial efficiency, is found for composite samples prepared by two-step impregnation with (BEA: silver tungstophosphate) mass ratio 2:1. The amount of nicosulfuron removed from water suspension was 38.2 mg per gram of composite, and the minimum inhibitory concentration determined for all investigated gram-negative bacteria was 125 μg mL-1.
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Affiliation(s)
- Dejana Janićijević
- Faculty of Physical Chemistry, University of Belgrade, 11158 Belgrade, Serbia
| | | | - Dragan Ranković
- Faculty of Physical Chemistry, University of Belgrade, 11158 Belgrade, Serbia
| | | | - Anka Jevremović
- Faculty of Physical Chemistry, University of Belgrade, 11158 Belgrade, Serbia
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134
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Quanten T, Savić ND, Parac-Vogt TN. Hydrolysis of Peptide Bonds in Protein Micelles Promoted by a Zirconium(IV)-Substituted Polyoxometalate as an Artificial Protease. Chemistry 2020; 26:11170-11179. [PMID: 32515831 DOI: 10.1002/chem.202001920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Indexed: 12/22/2022]
Abstract
The development of artificial proteases is challenging, but important for many applications in modern proteomics and biotechnology. The hydrolysis of hydrophobic or unstructured proteins is particularly difficult due to their poor solubility, which often requires the presence of surfactants. Herein, it is shown that a zirconium(IV)-substituted Keggin polyoxometalate (POM), (Et2 NH2 )10 [Zr(α-PW11 O39 )2 ] (1), is able to selectively hydrolyze β-casein, which is an intrinsically unstructured protein at pH 7.4 and 60 °C. Four surfactants (sodium dodecyl sulfate (SDS), N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (ZW3-12), 3-[(3-cholamidopropyl)dimethylammonio]-1-propanesulfonate (CHAPS), and polyethylene glycol tert-octylphenyl ether (TX-100)), which differ in the nature of their polar groups, were investigated for their role in influencing the selectivity and efficiency of protein hydrolysis. Under experimental conditions, β-casein forms micellar structures in which the hydrophilic part of the protein is water accessible and able to interact with 1. Identical fragmentation patterns of β-casein in the presence of 1 were observed through SDS poly(acrylamide) gel electrophoresis both in the presence and absence of surfactants, but the rate of hydrolysis varied, depending on the nature of surfactant. Whereas TX-100 surfactant, which has a neutral polar head, caused only a slight decrease in the hydrolysis rate, stronger inhibition was observed in the presence surfactants with charges in their polar heads (CHAPS, ZW3-12, SDS). These results were consistent with those of tryptophan fluorescencequenching studies, which showed that the binding between β-casein and 1 decreased with increasing repulsion between the POM and the polar heads of the surfactants. In all cases, the micellar structure of β-casein was not significantly affected by the presence of POM or surfactants, as indicated by circular dichroism spectroscopy.
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Affiliation(s)
- Thomas Quanten
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001, Leuven, Belgium
| | - Nada D Savić
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001, Leuven, Belgium
| | - Tatjana N Parac-Vogt
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, 3001, Leuven, Belgium
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135
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Zhao M, Fang Y, Ma L, Zhu X, Jiang L, Li M, Han Q. Synthesis, characterization and in vitro antibacterial mechanism study of two Keggin-type polyoxometalates. J Inorg Biochem 2020; 210:111131. [DOI: 10.1016/j.jinorgbio.2020.111131] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 02/07/2023]
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136
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137
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Ścibior A, Pietrzyk Ł, Plewa Z, Skiba A. Vanadium: Risks and possible benefits in the light of a comprehensive overview of its pharmacotoxicological mechanisms and multi-applications with a summary of further research trends. J Trace Elem Med Biol 2020; 61:126508. [PMID: 32305626 PMCID: PMC7152879 DOI: 10.1016/j.jtemb.2020.126508] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 02/25/2020] [Accepted: 03/19/2020] [Indexed: 01/21/2023]
Abstract
BACKGROUND Vanadium (V) is an element with a wide range of effects on the mammalian organism. The ability of this metal to form organometallic compounds has contributed to the increase in the number of studies on the multidirectional biological activity of its various organic complexes in view of their application in medicine. OBJECTIVE This review aims at summarizing the current state of knowledge of the pharmacological potential of V and the mechanisms underlying its anti-viral, anti-bacterial, anti-parasitic, anti-fungal, anti-cancer, anti-diabetic, anti-hypercholesterolemic, cardioprotective, and neuroprotective activity as well as the mechanisms of appetite regulation related to the possibility of using this element in the treatment of obesity. The toxicological potential of V and the mechanisms of its toxic action, which have not been sufficiently recognized yet, as well as key information about the essentiality of this metal, its physiological role, and metabolism with certain aspects on the timeline is collected as well. The report also aims to review the use of V in the implantology and industrial sectors emphasizing the human health hazard as well as collect data on the directions of further research on V and its interactions with Mg along with their character. RESULTS AND CONCLUSIONS Multidirectional studies on V have shown that further analyses are still required for this element to be used as a metallodrug in the fight against certain life-threatening diseases. Studies on interactions of V with Mg, which showed that both elements are able to modulate the response in an interactive manner are needed as well, as the results of such investigations may help not only in recognizing new markers of V toxicity and clarify the underlying interactive mechanism between them, thus improving the medical application of the metals against modern-age diseases, but also they may help in development of principles of effective protection of humans against environmental/occupational V exposure.
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Key Words
- 3-HMG-CoA, 3-hydroxy-3-methyl-glutaryl-CoA
- AIDS, acquired immune deficiency syndrome
- ALB, albumin
- ALP, alkaline phosphatase
- AS, antioxidant status
- Akt, protein kinase B (PKB)
- AmD, Assoc American Dietetic Association
- Anti-B, anti-bacterial
- Anti-C, anti-cancer
- Anti-D, anti-diabetic
- Anti-F, anti-fungal
- Anti-O, anti-obesity
- Anti-P, anti-parasitic
- Anti-V, anti-viral
- Anti−HC, anti-hypercholesterolemic
- ApoA-I, apolipoprotein A
- ApoB, apolipoprotein B
- B, bone
- BCOV, bis(curcumino)oxavanadyl
- BEOV, bis(ethylmaltolato)oxovanadium
- BMOV, bis(maltolato)oxavanadium(IV)
- Bim, Blc-2 interacting mediator of cell death
- Biological role
- BrOP, bromoperoxidase
- C, cholesterol
- C/EBPα, CCAAT-enhancer-binding protein α
- CD4, CD4 receptor
- CH, cerebral hemisphere
- CHO-K1, Chinese hamster ovary cells
- CXCR-4, CXCR-4 chemokine co-receptor
- Cardio-P, cardioprotective
- Citrate-T, citrate transporter
- CoA, coenzyme A
- Cyt c, cytochrome c
- DM, diabetes mellitus
- ELI, extra low interstitial
- ERK, extracellular regulated kinase
- FHR, fructose hypertensive rats
- FKHR/FKHR1/AFX, class O members of the forkhead transcription factor family
- FLIP, FLICE-inhibitory protein
- FOXOs, forkhead box class O family member proteins
- FPP, farnesyl-pyrophosphate
- FasL, Fas ligand, FER: ferritin
- GI, gastrointestinal
- GLU, glucose
- GLUT-4, glucose transporter type 4
- GPP, geranyl-pyrophosphate
- GPT, glutamate-pyruvate transaminase
- GR, glutathione reductase
- GSH, reduced glutathione
- GSSG, disulfide glutathione
- HDL, high-density lipoproteins
- HDL-C, HDL cholesterol
- HIV, human immunodeficiency virus
- HMMF, high molecular mass fraction
- HOMA-IR, insulin resistance index
- Hb, hemoglobin
- HbF, hemoglobin fraction
- Hyper-LEP, hyperleptynemia
- IDDM, insulin-dependent diabetes mellitus
- IGF-IR, insulin-like growth factor receptor
- IL, interleukin
- INS, insulin
- INS-R, insulin resistance
- INS-S, insulin sensitivity
- IPP, isopentenyl-5-pyrophosphate
- IRS, insulin receptor tyrosine kinase substrate
- IgG, immunoglobulin G
- Industrial importance
- Interactions
- JAK2, Janus kinase 2
- K, kidney
- L, liver
- L-AA, L-ascorbic acid
- LDL, low-density lipoproteins
- LDL-C, LDL cholesterol
- LEP, leptin
- LEP-R, leptin resistance
- LEP-S, leptin sensitivity
- LEPS, the concentration of leptin in the serum
- LMMF, low molecular mass fraction
- LPL, lipoprotein lipase
- LPO, lipid peroxidation
- Lactate-T, lactate transporter
- M, mitochondrion
- MEK, ERK kinase activator
- MRC, mitochondrial respiratory chain
- NAC, N-acetylcysteine
- NEP, neutral endopeptidase
- NIDDM, noninsulin-dependent diabetes mellitus
- NO, nitric oxide
- NPY, neuropeptide Y
- NaVO3, sodium metavanadate
- Neuro-P, neuroprotective
- OXPHOS, oxidative phosphorylation
- Organic-AT, organic anion transporter
- Over-W, over-weight
- P, plasma
- PANC-1, pancreatic ductal adenocarcinoma cells
- PARP, poly (ADP-ribose) polymerase
- PLGA, (Poly)Lactide-co-Glycolide copolymer
- PO43−, phosphate ion
- PPARγ, peroxisome-activated receptor γ
- PTK, tyrosine protein kinase
- PTP, protein tyrosine phosphatase
- PTP-1B, protein tyrosine phosphatase 1B
- Pharmacological activity
- Pi3K, phosphoinositide 3-kinase (phosphatidylinositol 3-kinase)
- RBC, erythrocytes
- ROS, reactive oxygen species
- RT, reverse transcriptase
- SARS, severe acute respiratory syndrome
- SAcP, acid phosphatase secreted by Leshmania
- SC-Ti-6Al-4V, surface-coated Ti-6Al-4V
- SHR, spontaneously hypertensive rats
- SOD, superoxide dismutase
- STAT3, signal transducer/activator of transcription 3
- Sa, mean roughness
- Sq, root mean square roughness
- Sz, ten-point height
- TC, total cholesterol
- TG, triglycerides
- TS, transferrin saturation
- Tf, transferrin
- TfF, transferrin fraction
- TiO2, nHA:Ag-Ti-6Al-4V: titanium oxide-based coating containing hydroxyapatite nanoparticle and silver particles
- Top-IB, IB type topoisomerase
- Toxicological potential
- V, vanadium
- V-BrPO, vanadium bromoperoxidase
- V-DLC, diamond-like layer with vanadium
- V5+/V4+, pentavalent/tetravalent vanadium
- VO2+, vanadyl cation
- VO2+-FER, vanadyl-ferritin complex
- VO4-/VO3-, vanadate anion
- VO43-, vanadate ion
- VS, vanadyl sulfate
- Vanadium
- WB, whole blood
- ZDF rats, Zucker diabetic fatty rats
- ZF rats, Zucker fatty rats
- breakD, breakdown
- eNOS, endothelial nitric oxide synthase
- mo, months
- n-HA, nano-hydroxyapatite
- pRb, retinoblastoma protein
- wk, weeks
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Affiliation(s)
- Agnieszka Ścibior
- Laboratory of Oxidative Stress, Centre for Interdisciplinary Research, The John Paull II Catholic University of Lublin, Poland
| | - Łukasz Pietrzyk
- Laboratory of Oxidative Stress, Centre for Interdisciplinary Research, The John Paull II Catholic University of Lublin, Poland
- Department of Didactics and Medical Simulation, Chair of Anatomy, Medical University of Lublin, Poland
| | - Zbigniew Plewa
- Department of General, Oncological, and Minimally Invasive Surgery, 1 Military Clinical Hospital with the Outpatient Clinic in Lublin, Poland
| | - Andrzej Skiba
- Military Clinical Hospital with the Outpatient Clinic in Lublin, Poland
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138
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Abstract
The therapeutic applications of gold are well-known for many centuries. The most used gold compounds contain Au(I). Herein, we report, for the first time, the ability of four Au(I) and Au(III) complexes, namely dichloro (2-pyridinecarboxylate) Au(III) (abbreviated as 1), chlorotrimethylphosphine Au(I) (2), 1,3-bis(2,6-diisopropylphenyl) imidazole-2-ylidene Au(I) chloride (3), and chlorotriphenylphosphine Au(I) (4), to affect the sarcoplasmic reticulum (SR) Ca2+-ATPase activity. The tested gold compounds strongly inhibit the Ca2+-ATPase activity with different effects, being Au(I) compounds 2 and 4 the strongest, with half maximal inhibitory concentration (IC50) values of 0.8 and 0.9 µM, respectively. For Au(III) compound 1 and Au(I) compound 3, higher IC50 values are found (4.5 µM and 16.3 µM, respectively). The type of enzymatic inhibition is also different, with gold compounds 1 and 2 showing a non-competitive inhibition regarding the native substrate MgATP, whereas for Au compounds 3 and 4, a mixed type of inhibition is observed. Our data reveal, for the first time, Au(I) compounds with powerful inhibitory capacity towards SR Ca2+ATPase function. These results also show, unprecedently, that Au (III) and Au(I) compounds can act as P-type ATPase inhibitors, unveiling a potential application of these complexes.
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139
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An enhanced antibacterial nanoflowers AgPW@PDA@Nisin constructed from polyoxometalate and nisin. J Inorg Biochem 2020; 212:111212. [PMID: 32920432 DOI: 10.1016/j.jinorgbio.2020.111212] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 12/25/2022]
Abstract
A new composite, AgPW@PDA@Nisin, with shell-core structure was successfully synthesized by a polydopamine (PDA) surfaced conjugated nisin (an antibacterial 34 amino acid polycyclic peptide) as shell and polyoxometalates (Ag3PW12O40 = AgPW) as core. The composite was characterized by the zeta potential, scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction analysis (XRD), fourier transform infrared (FT-IR). The AgPW@PDA@Nisin showed flower hierarchical structure and potential antibacterial activity against S. aureus ATCC29213. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of it were 4 and 32 μg/mL. AgPW@PDA@Nisin nanoflowers-induced bacterial death bears the characteristic of cell morphology, membrane integrity and permeability changing, nucleotide leakage. It indicated that the AgPW@PDA@Nisin interfere with the cell membrane, resulting in antibacterial activity against S. aureus. The cytotoxicity of the nanoflowers was low on HDF-a (human dermal fibroblasts) cells. A new class of hybrid inorganic-organic nanoflowers based on polyoxometalates and nisin with enhanced antibacterial properties can be developed for food preservation.
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140
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Petrus E, Segado M, Bo C. Nucleation mechanisms and speciation of metal oxide clusters. Chem Sci 2020; 11:8448-8456. [PMID: 34123104 PMCID: PMC8163382 DOI: 10.1039/d0sc03530k] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 07/31/2020] [Indexed: 11/24/2022] Open
Abstract
The self-assembly mechanisms of polyoxometalates (POMs) are still a matter of discussion owing to the difficult task of identifying all the chemical species and reactions involved. We present a new computational methodology that identifies the reaction mechanism for the formation of metal-oxide clusters and provides a speciation model from first-principles and in an automated manner. As a first example, we apply our method to the formation of octamolybdate. In our model, we include variables such as pH, temperature and ionic force because they have a determining effect on driving the reaction to a specific product. Making use of graphs, we set up and solved 2.8 × 105 multi-species chemical equilibrium (MSCE) non-linear equations and found which set of reactions fitted best with the experimental data available. The agreement between computed and experimental speciation diagrams is excellent. Furthermore, we discovered a strong linear dependence between DFT and empirical formation constants, which opens the door for a systematic rescaling.
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Affiliation(s)
- Enric Petrus
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 43007 Tarragona Spain
| | - Mireia Segado
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 43007 Tarragona Spain
| | - Carles Bo
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST) Av. Països Catalans, 16 43007 Tarragona Spain
- Departament de Química Física i Inorgánica, Universitat Rovira i Virgili Marcel·lí Domingo s/n 43007 Tarragona Spain
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141
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Dai WT, cui LP, Yu K, Lv JH, Ma XY, Zhou BB. Two reduced phosphomolybdate hybrid assemblies modified by Cu-biz and/or Cu-bdz complexes for photocatalytic and bifunctional electrocatalytic activities. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121399] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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142
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Van Rompuy LS, Savić ND, Rodriguez A, Parac-Vogt TN. Selective Hydrolysis of Transferrin Promoted by Zr-Substituted Polyoxometalates. Molecules 2020; 25:E3472. [PMID: 32751602 PMCID: PMC7435656 DOI: 10.3390/molecules25153472] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 12/20/2022] Open
Abstract
The hydrolysis of the iron-binding blood plasma glycoprotein transferrin (Tf) has been examined at pH = 7.4 in the presence of a series of Zr-substituted polyoxometalates (Zr-POMs) including Keggin (Et2NH2)10[Zr(PW11O39)2]∙7H2O (Zr-K 1:2), (Et2NH2)8[{α-PW11O39Zr-(μ-OH) (H2O)}2]∙7H2O (Zr-K 2:2), Wells-Dawson K15H[Zr(α2-P2W17O61)2]·25H2O (Zr-WD 1:2), Na14[Zr4(α-P2W16O59)2(μ3-O)2(μ-OH)2(H2O)4]·57H2O (Zr-WD 4:2) and Lindqvist (Me4N)2[ZrW5O18(H2O)3] (Zr-L 1:1), (nBu4N)6[(ZrW5O18(μ-OH))2]∙2H2O (Zr-L 2:2)) type POMs. Incubation of transferrin with Zr-POMs resulted in formation of 13 polypeptide fragments that were observed on sodium dodecyl sulfate poly(acrylamide) gel electrophoresis (SDS-PAGE), but the hydrolysis efficiency varied depending on the nature of Zr-POMs. Molecular interactions between Zr-POMs and transferrin were investigated by using a range of complementary techniques such as tryptophan fluorescence, circular dichroism (CD), 31P-NMR spectroscopy, in order to gain better understanding of different efficiency of investigated Zr-POMs. A tryptophan fluorescence quenching study revealed that the most reactive Zr-WD species show the strongest interaction toward transferrin. The CD results demonstrated that interaction of Zr-POMs and transferrin in buffer solution result in significant secondary structure changes. The speciation of Zr-POMs has been followed by 31P-NMR spectroscopy in the presence and absence of transferrin, providing insight into stability of the catalysts under reaction condition.
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Affiliation(s)
| | | | | | - Tatjana N. Parac-Vogt
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium; (L.S.V.R.); (N.D.S.); (A.R.)
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143
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Zhang G, Luan J, Wang XJ. The crystal structure of tetrakis(1-methylimidazole-κ 1
N)-oxido-(sulfato-κ 1
O)vanadium(IV), C 16H 24N 8O 5SV. Z KRIST-NEW CRYST ST 2020. [DOI: 10.1515/ncrs-2020-0276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C16H24N8O5SV, monoclinic, P21/c (no. 14), a = 9.6165(6) Å, b = 16.6705(10) Å, c = 15.2726(7) Å, β = 121.630(3)°, V = 2084.7(2) Å3, Z = 4, R
gt(F) = 0.0417, wR
ref(F
2) = 0.1443, T = 296(2) K.
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Affiliation(s)
- Gang Zhang
- College of Chemistry, Chemical Engineering and Environmental Engineering , Liaoning Shihua University , Fushun, Liaoning Province, 113001 , P.R. China
| | - Jian Luan
- Shenyang National Laboratory for Materials Science, Institute of Metal Research , Chinese Academy of Sciences , Shenyang, Liaoning Province, 110016 , P.R. China
| | - Xiao-Jie Wang
- College of Chemistry, Chemical Engineering and Environmental Engineering , Liaoning Shihua University , Fushun, Liaoning Province, 113001 , P.R. China
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144
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Joshi A, Gupta R, Vaghasiya K, Verma RK, Sharma D, Singh M. In Vitro Anti-tumoral and Anti-bacterial Activity of an Octamolybdate Cluster-Based Hybrid Solid Incorporated with a Copper Picolinate Complex. ACS APPLIED BIO MATERIALS 2020; 3:4025-4035. [PMID: 35025477 DOI: 10.1021/acsabm.0c00093] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Inorganic drugs, especially polyoxometalate-based hybrids, are expected to be developed as promising future metallodrugs. Herein, an organic-inorganic hybrid solid based on pyridine-2-carboxylic acid or picolinic acid (pic), [(Cu(pic)2)2(Mo8O26)]·8H2O (1), was synthesized. A single-crystal structure of a solid possesses a discrete β-type octamolybdate cluster that supramolecularly aggregates with a {Cu2(pic)4}4- complex and eight lattice water molecules. The study indicates that the solid is stable in aqueous medium and less toxic toward normal cell lines. The in vitro anti-bacterial and anti-tumor properties of the solid 1 were investigated. The results of the anti-tumor action against various human cancer cell lines, namely, lung (A549), breast (MCF-7), and liver (HepG2) cancer cells suggest that this β-octamolybdate-based solid yielded the lowest IC50 value reported so far among octamolybdate anion-based hybrid solids, i.e., 24.24 μM for MCF-7, 21.56 μM for HepG2, and 25 μM for A549, indicating significant anti-cancer activity. The cell cycle analysis further reveals the observed anti-tumor effect to be governed by the arrest of breast cancer cells in the G2/M phase while that of lung and liver cancer cells in the S phase of the cell cycle. A fluorescence quenching study suggests the binding interaction between solid and ctDNA, which in turn induces apoptosis and necrosis pathways leading to cancer cell death. This is also the first study of {Mo8O26}4- cluster-based solids as an anti-bacterial agent against Escherichia coli, and it was found to be very effective with a minimal inhibitory concentration value of ∼135 μg/mL, which is the lowest so far reported for any octamolybdate-based solid.
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Affiliation(s)
- Arti Joshi
- Institute of Nano Science and Technology, Habitat Centre, Sector-64, Phase-10, Mohali 160062, Punjab, India
| | - Ruby Gupta
- Institute of Nano Science and Technology, Habitat Centre, Sector-64, Phase-10, Mohali 160062, Punjab, India
| | - Kalpesh Vaghasiya
- Institute of Nano Science and Technology, Habitat Centre, Sector-64, Phase-10, Mohali 160062, Punjab, India
| | - Rahul Kumar Verma
- Institute of Nano Science and Technology, Habitat Centre, Sector-64, Phase-10, Mohali 160062, Punjab, India
| | - Deepika Sharma
- Institute of Nano Science and Technology, Habitat Centre, Sector-64, Phase-10, Mohali 160062, Punjab, India
| | - Monika Singh
- Institute of Nano Science and Technology, Habitat Centre, Sector-64, Phase-10, Mohali 160062, Punjab, India
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145
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Supermolecular film crosslinked by polyoxometalate and chitosan with superior antimicrobial effect. Int J Biol Macromol 2020; 154:732-738. [DOI: 10.1016/j.ijbiomac.2020.03.139] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 03/15/2020] [Accepted: 03/15/2020] [Indexed: 12/12/2022]
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146
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Chi G, Xie L, Zhao M, Wang L, Wang F, Li J, Zheng A. Biological evaluation of Keggin-type polyoxometalates on tyrosinase: Kinetics and molecular modeling. Chem Biol Drug Des 2020; 96:1255-1261. [PMID: 32473601 DOI: 10.1111/cbdd.13734] [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: 02/22/2020] [Revised: 05/05/2020] [Accepted: 05/10/2020] [Indexed: 02/06/2023]
Abstract
Abnormal overexpression of tyrosinase activity can lead to the production of hyperpigmentation in human skin and enzymatic browning in fruits and vegetables. Herein, the inhibition and mechanism of the H3 PMo12 O40 and two transition metal-substituted Keggin-type polyoxometalates (Na7 PMo11 CoO40 and Na7 PMo11 ZnO40 ) on tyrosinase were studied by kinetics and molecular modeling. Kinetic studies indicated that all compounds had more potent inhibitory activities than standard arbutin, and H3 PMo12 O40 (IC50 = 0.443 ± 0.006 mm) is ~15-fold stronger inhibition than arbutin. Additionally, all compounds inhibited tyrosinase in a reversible competitive manner. Intriguingly, molecular modeling elucidated that three compounds competitively bind to tyrosinase mainly through more interactions with Cu2+ ions and the amino acid residue capable of forming cation-π and hydrogen bonding, forming a reversible non-covalent complex. Molecular simulation study correlated well with the biological activity of three compounds in vitro. This work provided new insights into design and synthesis of polyoxometalates as tyrosinase inhibitors in the field of medicine, cosmetic, and food.
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Affiliation(s)
- Guoxiang Chi
- College of Food and Biological Engineering, Jimei University, Xiamen, China
| | - Lefang Xie
- College of Food and Biological Engineering, Jimei University, Xiamen, China
| | - Meijuan Zhao
- College of Food and Biological Engineering, Jimei University, Xiamen, China
| | - Li Wang
- College of Food and Biological Engineering, Jimei University, Xiamen, China
| | - Fang Wang
- College of Chemistry and Life Science, Quanzhou Normal College, Quanzhou, China
| | - Jian Li
- College of Food and Biological Engineering, Jimei University, Xiamen, China
| | - Aping Zheng
- College of Food and Biological Engineering, Jimei University, Xiamen, China
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147
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Tanuhadi E, Al-Sayed E, Novitchi G, Roller A, Giester G, Rompel A. Cation-Directed Synthetic Strategy Using 4f Tungstoantimonates as Nonlacunary Precursors for the Generation of 3d-4f Clusters. Inorg Chem 2020; 59:8461-8467. [PMID: 32442371 PMCID: PMC7298720 DOI: 10.1021/acs.inorgchem.0c00890] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
![]()
The first synthetic
pathway using a series of four nonlacunary
4f-heterometal-substituted polyoxotungstate clusters Na21[(Ln(H2O)(OH)2(CH3COO))3(WO4)(SbW9O33)3]·nH2O (NaLnSbW9; Ln = TbIII, DyIII, HoIII, ErIII, YIII) as precursors for the directed
preparation of nine new 3d–4f heterometallic tungstoantimonates
K5Na12H3[TM(H2O)Ln3(H2O)5(W3O11)(SbW9O33)3]·nH2O (KTMLnSbW9; TM = CoII, NiII; Ln = TbIII, DyIII, HoIII, ErIII, YIII) has been developed.
Systematic studies revealed an increased K content in the aqueous
acidic reaction mixture to be the key step in the cation-directed
preparation of 3d–4f compounds; among those, the Co-containing
members represent the first examples of KCoLnSbW9 (Ln = TbIII, DyIII, HoIII, ErIII, YIII) heterometallic tungstoantimonates
exhibiting the SbW9 building
block. All 13 compounds have been characterized thoroughly in the
solid state by powder and single-crystal X-ray diffraction (XRD),
revealing a cyclic trimeric polyoxometalate architecture with three SbW9 units encapsulating a planar
triangle of LnIII ions in the case of NaLnSbW9 and a heterometallic core of one TMII and three LnIII for KTMLnSbW9 (TM = CoII, NiII; Ln =
TbIII, DyIII, HoIII, ErIII, YIII). The results obtained by XRD are supplemented
by complementary characterization methods in the solid state such
as IR spectroscopy, thermogravimetric analysis, and elemental analysis
as well as in solution by UV–vis spectroscopy. Detailed magnetic
studies on the representative compounds KTMDySbW9 (TM = CoII, NiII) and KCoYSbW9 of the series revealed field-induced
slow magnetic relaxation. The first step-by-step
synthetic protocol using preformed
4f tungstoantimonate clusters as nonlacunary precursors for the controlled
preparation and thorough characterization of a family of nine new
3d−4f heterometallic polyoxometalates [TM(H2O)Ln3(H2O)5(W3O11)(SbW9O33)3]20- (KTMLnSbW9) (TM = CoII, NiII; Ln = TbIII, DyIII, HoIII, ErIII, YIII) is reported. Magnetic studies on the
DyIII-containing representatives [TM(H2O)Dy3(H2O)5(W3O11)(SbW9O33)3]20− (TM = CoII, NiII) show single-molecule-magnet behavior.
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Affiliation(s)
- Elias Tanuhadi
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien, 1090 Wien, Austria
| | - Emir Al-Sayed
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien, 1090 Wien, Austria
| | - Ghenadie Novitchi
- Laboratoire National des Champs Magnetiques IntensesCNRS, 25 rue des Martyrs, 38042 Grenoble Cedex 9, France
| | - Alexander Roller
- Fakultät für Chemie, Zentrum für Röntgenstrukturanalyse, Universität Wien, 1090 Wien, Austria
| | - Gerald Giester
- , Fakultät für Geowissenschaften, Geographie und Astronomie, Institut für Mineralogie und KristallographieUniversität Wien, 1090 Wien, Austria
| | - Annette Rompel
- Fakultät für Chemie, Institut für Biophysikalische Chemie, Universität Wien, 1090 Wien, Austria
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148
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Al‐Hazmi GA, Abou‐Melha KS, Althagafi I, El‐Metwaly N, Shaaban F, Abdul Galil MS, El‐Bindary AA. Synthesis and structural characterization of oxovanadium(IV) complexes of dimedone derivatives. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5672] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Gamil A.A. Al‐Hazmi
- Department of Chemistry, Faculty of Science King Khalid University P.O. Box 9004 Abha Saudi Arabia
- Department of Chemistry, Faculty of Applied Sciences University of Taiz P.O. Box 82 Taiz Yemen
| | - Khlood S. Abou‐Melha
- Department of Chemistry, Faculty of Science King Khalid University P.O. Box 9004 Abha Saudi Arabia
| | - Ismail Althagafi
- Department of Chemistry, Faculty of Applied Science University of Umm‐Al‐Qura Makkah Saudi Arabia
| | - NashwaM. El‐Metwaly
- Department of Chemistry, Faculty of Applied Science University of Umm‐Al‐Qura Makkah Saudi Arabia
- Department of Chemistry, Faculty of Science University of Mansoura Mansoura Egypt
| | - Fathy Shaaban
- Department of Environment and Health Research, Custodian of the Two Holy Mosques Institute for Hajj and Umrah Research UmmAl‐Qura University Makkah Saudi Arabia
| | - Mansour S. Abdul Galil
- Department of Chemistry, Faculty of Applied Sciences University of Taiz P.O. Box 82 Taiz Yemen
| | - Ashraf A. El‐Bindary
- Department of Chemistry, Faculty of Sciences University of Damietta Damietta 34517 Egypt
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149
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Wan R, He P, Liu Z, Ma X, Ma P, Singh V, Zhang C, Niu J, Wang J. A Lacunary Polyoxovanadate Precursor and Transition‐Metal‐Sandwiched Derivatives for Catalytic Oxidation of Sulfides. Chemistry 2020; 26:8760-8766. [DOI: 10.1002/chem.201905741] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Rong Wan
- Henan Key Laboratory of Polyoxometalate ChemistryCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
| | - Peipei He
- Henan Key Laboratory of Polyoxometalate ChemistryCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
| | - Zhen Liu
- Henan Key Laboratory of Polyoxometalate ChemistryCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
| | - Xinyi Ma
- Henan Key Laboratory of Polyoxometalate ChemistryCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate ChemistryCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
| | - Vikram Singh
- Henan Key Laboratory of Polyoxometalate ChemistryCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
| | - Chao Zhang
- Henan Key Laboratory of Polyoxometalate ChemistryCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate ChemistryCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate ChemistryCollege of Chemistry and Chemical EngineeringHenan University Kaifeng Henan 475004 P. R. China
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150
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Guedes G, Wang S, Santos HA, Sousa FL. Polyoxometalate Composites in Cancer Therapy and Diagnostics. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000066] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gabriela Guedes
- Chemistry Department and CICECO-Aveiro Institute of Materials; University of Aveiro; Campus Universitário de Santiago 3810-193 Aveiro Portugal
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy; University of Helsinki; Viikinkaari 5 E (P.O.Box 56) 00014 Helsinki Finland
| | - Shiqi Wang
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy; University of Helsinki; Viikinkaari 5 E (P.O.Box 56) 00014 Helsinki Finland
| | - Hélder A. Santos
- Helsinki Institute of Life Science; University of Helsinki; Viikinkaari 5 E (P.O.Box 56) 00014 Helsinki Finland
| | - Filipa L. Sousa
- Chemistry Department and CICECO-Aveiro Institute of Materials; University of Aveiro; Campus Universitário de Santiago 3810-193 Aveiro Portugal
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