201
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Fang Y, Xing C, Zhan S, Zhao M, Li M, Liu H. A polyoxometalate-modified magnetic nanocomposite: a promising antibacterial material for water treatment. J Mater Chem B 2019; 7:1933-1944. [DOI: 10.1039/c8tb03331e] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A polyoxometalate-modified magnetic nanocomposite integrates the double antibacterial effects of both Fe3O4 and polyoxometalate, rendering it a promising candidate as an antimicrobial material.
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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
| | - Cuili Xing
- Henan Key Laboratory of Polyoxometalates
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Shixia Zhan
- Henan Key Laboratory of Polyoxometalates
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Meng Zhao
- Henan Key Laboratory of Polyoxometalates
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Mingxue Li
- Henan Key Laboratory of Polyoxometalates
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Hongling Liu
- Henan Key Laboratory of Polyoxometalates
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
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202
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Wang L, Meng T, Sun J, Wu S, Zhang M, Wang H, Zhang Y. Development of Pd/Polyoxometalate/nitrogen-doping hollow carbon spheres tricomponent nanohybrids: A selective electrochemical sensor for acetaminophen. Anal Chim Acta 2019; 1047:28-35. [DOI: 10.1016/j.aca.2018.09.042] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/13/2018] [Accepted: 09/17/2018] [Indexed: 12/18/2022]
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203
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Gu YN, Yu H, Lin LD, Wu YL, Li Z, Pan WY, He J, Chen L, Li Q, Li XX. Two rare Cr–Ln (Ln = Dy, Tb) heterometallic cluster substituted polyoxometalates featuring hexameric aggregates: hydrothermal syntheses, crystal structures and magnetic studies. NEW J CHEM 2019. [DOI: 10.1039/c8nj06327c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Two hexameric Cr–Ln cluster substituted POMs have been obtained under hydrothermal conditions. They represent the first examples of 3d–4f heterometallic cluster substituted POMs incorporating Cr–Ln clusters.
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204
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Li Z, Zhang J, Lin LD, Liu JH, Li XX, Zheng ST. Inorganic–organic hybrid high-dimensional polyoxotantalates and their structural transformations triggered by water. Chem Commun (Camb) 2019; 55:11735-11738. [DOI: 10.1039/c9cc05884b] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, novel dimeric polyoxotantalate (POTa) clusters {Cu(en)(Ta6O19)}2/{Cu(enMe)(Ta6O19)}2 were introduced as SBUs to construct a new family of extended POTa materials, including the first two 3D POTa frameworks and two 2D POTa layers.
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Affiliation(s)
- Zhong Li
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350108
- China
| | - Jing Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350108
- China
| | - Li-Dan Lin
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350108
- China
| | - Jin-Hua Liu
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350108
- China
| | - Xin-Xiong Li
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350108
- China
| | - Shou-Tian Zheng
- State Key Laboratory of Photocatalysis on Energy and Environment
- College of Chemistry
- Fuzhou University
- Fuzhou 350108
- China
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205
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Marques-da-Silva D, Fraqueza G, Lagoa R, Vannathan AA, Mal SS, Aureliano M. Polyoxovanadate inhibition of Escherichia coli growth shows a reverse correlation with Ca2+-ATPase inhibition. NEW J CHEM 2019. [DOI: 10.1039/c9nj01208g] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Polyoxovanadates were recently found to be the most active among a series of polyoxometalates against bacteria. In this study, a reverse correlation was found between the Ca2+-ATPase IC50 and the E. Coli GI50 values.
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Affiliation(s)
- Dorinda Marques-da-Silva
- ESTG, Polytechnic Institute of Leiria
- Portugal
- UCIBIO, Faculty of Science and Technology
- University NOVA of Lisbon
- Portugal
| | - Gil Fraqueza
- ISE, University of Algarve
- 8005-139 Faro
- Portugal
- CCMar, University of Algarve
- 8005-139 Faro
| | - Ricardo Lagoa
- ESTG, Polytechnic Institute of Leiria
- Portugal
- UCIBIO, Faculty of Science and Technology
- University NOVA of Lisbon
- Portugal
| | | | - Sib Sankar Mal
- Department of Chemistry
- National Institute of Technology Karnataka
- Mangalore 575025
- India
| | - Manuel Aureliano
- CCMar, University of Algarve
- 8005-139 Faro
- Portugal
- FCT
- University of Algarve
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206
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Lu J, He P, Niu J, Wang J. Polyoxometalate-supported metal carbonyl derivatives: from synthetic strategies to structural diversity and applications. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00832b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This review aims to give an overview of the POM-supported metal carbonyl complexes obtained so far, focusing on their structural diversity and potential photochemical and catalytic properties.
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Affiliation(s)
- Jingkun Lu
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Peipei He
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng
| | - Jingping Wang
- 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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207
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Breibeck J, Bijelic A, Rompel A. Transition metal-substituted Keggin polyoxotungstates enabling covalent attachment to proteinase K upon co-crystallization. Chem Commun (Camb) 2019; 55:11519-11522. [DOI: 10.1039/c9cc05818d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
POM-protein interaction: a series of 3d metal-substituted Keggin polyoxotungstates was co-crystallized with proteinase K, resulting in covalent bonds to aspartate protein side-chains as a desirable feature of these novel crystallization additives.
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Affiliation(s)
- Joscha Breibeck
- Universität Wien
- Fakultät für Chemie
- Institut für Biophysikalische Chemie
- 1090 Wien
- Austria
| | - Aleksandar Bijelic
- Universität Wien
- Fakultät für Chemie
- Institut für Biophysikalische Chemie
- 1090 Wien
- Austria
| | - Annette Rompel
- Universität Wien
- Fakultät für Chemie
- Institut für Biophysikalische Chemie
- 1090 Wien
- Austria
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208
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Sciortino G, Sanna D, Ugone V, Maréchal JD, Alemany-Chavarria M, Garribba E. Effect of secondary interactions, steric hindrance and electric charge on the interaction of VIVO species with proteins. NEW J CHEM 2019. [DOI: 10.1039/c9nj01956a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The effect of secondary interactions (hydrogen bonds and van der Waals contacts), steric hindrance and electric charge, on the binding of VIV complexes formed by pipemidic and 8-hydroxyquinoline-5-sulphonic acids with ubiquitin and lysozyme is studied.
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Affiliation(s)
- Giuseppe Sciortino
- Departament de Química
- Universitat Autònoma de Barcelona
- Barcelona
- Spain
- Dipartimento di Chimica e Farmacia
| | - Daniele Sanna
- Istituto CNR di Chimica Biomolecolare
- I-07040 Sassari
- Italy
| | - Valeria Ugone
- Dipartimento di Chimica e Farmacia
- Università di Sassari
- I-07100 Sassari
- Italy
| | | | | | - Eugenio Garribba
- Dipartimento di Chimica e Farmacia
- Università di Sassari
- I-07100 Sassari
- Italy
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209
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Affiliation(s)
- Jin Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou 466000, Henan, China
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Shujie Li
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Qiaofei Xu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Yingguang Li
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry, Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
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210
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Anyushin AV, Sap A, Quanten T, Proost P, Parac-Vogt TN. Selective Hydrolysis of Ovalbumin Promoted by Hf(IV)-Substituted Wells-Dawson-Type Polyoxometalate. Front Chem 2018; 6:614. [PMID: 30619823 PMCID: PMC6305993 DOI: 10.3389/fchem.2018.00614] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/28/2018] [Indexed: 12/14/2022] Open
Abstract
The reactivity and selectivity of Wells-Dawson type polyoxometalate (POM), K16[Hf(α2-P2W17O61)2]·19H2O (Hf1-WD2), have been examined with respect to the hydrolysis of ovalbumin (OVA), a storage protein consisting of 385 amino acids. The exact cleavage sites have been determined by Edman degradation experiments, which indicated that Hf1-WD2 POM selectively cleaved OVA at eight peptide bonds: Phe13-Asp14, Arg85-Asp86, Asn95-Asp96, Ala139-Asp140, Ser148-Trp149, Ala361-Asp362, Asp362-His363, and Pro364-Phe365. A combination of spectroscopic methods including 31P NMR, Circular Dichroism (CD), and Tryptophan (Trp) fluorescence spectroscopy were employed to gain better understanding of the observed selective cleavage and the underlying hydrolytic mechanism. 31P NMR spectra have shown that signals corresponding to Hf1-WD2 gradually broaden upon addition of OVA and completely disappear when the POM-protein molar ratio becomes 1:1, indicating formation of a large POM/protein complex. CD demonstrated that interactions of Hf1-WD2 with OVA in the solution do not result in protein unfolding or denaturation even upon adding an excess of POM. Trp fluorescence spectroscopy measurements revealed that the interaction of Hf1-WD2 with OVA (Kq = 1.1 × 105 M−1) is both quantitatively and qualitatively slightly weaker than the interaction of isostructural Zr-containing Wells-Dawson POM (Zr1-WD2) with human serum albumin (HAS) (Kq = 5.1 × 105 M−1).
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Affiliation(s)
- Alexander V Anyushin
- Laboratory of Bio-Inorganic Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Annelies Sap
- Laboratory of Bio-Inorganic Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Thomas Quanten
- Laboratory of Bio-Inorganic Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology and Immunology, KU Leuven, Leuven, Belgium
| | - Tatjana N Parac-Vogt
- Laboratory of Bio-Inorganic Chemistry, Department of Chemistry, KU Leuven, Leuven, Belgium
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211
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Van Rompuy LS, Parac-Vogt TN. Interactions between polyoxometalates and biological systems: from drug design to artificial enzymes. Curr Opin Biotechnol 2018; 58:92-99. [PMID: 30529815 DOI: 10.1016/j.copbio.2018.11.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 11/20/2018] [Indexed: 12/11/2022]
Abstract
Polyoxometalates have long been studied in a variety of biological applications. Interactions between the highly charged POM molecules and biological molecules frequently occur through hydrogen-bonding and electrostatic interactions. Tellurium-centred Anderson-Evans POMs show exceptional promise as crystallization agents, while acidic and metal-substituted POMs may provide interesting alternatives to enzymes in proteomics applications. While POMs also show interesting results in a number of medicinal applications, for example as anti-amyloid agents for the treatment of Alzheimer's disease and as anti-tumoral agents, their use is often impeded by their toxicity. Many recent studies have therefore focussed on POM-functionalization to reduce toxicity and increase activity by addition of biological targeting molecules.
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Affiliation(s)
- Laura S Van Rompuy
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Tatjana N Parac-Vogt
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium.
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212
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Sciortino G, Garribba E, Maréchal JD. Validation and Applications of Protein-Ligand Docking Approaches Improved for Metalloligands with Multiple Vacant Sites. Inorg Chem 2018; 58:294-306. [PMID: 30475597 DOI: 10.1021/acs.inorgchem.8b02374] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Decoding the interaction between coordination compounds and proteins is of fundamental importance in biology, pharmacy, and medicine. In this context, protein- ligand docking represents a particularly interesting asset to predict how small compounds could interact with biomolecules, but to date, very little information is available to adapt these methodologies to metal-containing ligands. Here, we assessed the predictive capability of a metal-compatible parameter set for the docking program GOLD for metallo ligands with multiple vacant sites and different geometries. The study first presents a benchmark of 25 well-characterized X-ray metallo ligand-protein adducts. In 100% of the cases, the docking solutions are superimposable to the X-ray determination, and in 92% the value of the root-mean-square deviation between the experimental and calculated structures is lower than 1.5 Å. After the validation step, we applied these methods to five case studies for the prediction of the binding of pharmacological active metal species to proteins: (i) the anticancer copper(II) complex [CuII(Br)(2-hydroxy-1-naphthaldehyde benzoyl hydrazine)(indazole)] to human serum albumin (HSA); (ii) one of the active species of antidiabetic and antitumor vanadium compounds, VIVO2+ ion, to carboxypeptidase; (iii) the antiarthritic species [AuI(PEt3)]+ to HSA; (iv) the antitumor oxaliplatin to ubiquitin; (v) the antitumor ruthenium(II) compound RAPTA-PentaOH to cathepsin B. The calculations suggested that the binding modes are in good agreement with the partial information retrieved from spectroscopic and spectrometric analysis and allowed us, in certain cases, to propose additional hypotheses. This method is an important update in protein-metallo ligand docking, which could have a wide field of application, from biology and inorganic biochemistry to medicinal chemistry and pharmacology.
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Affiliation(s)
- Giuseppe Sciortino
- Departament de Química , Universitat Autònoma de Barcelona , Cerdanyola del Vallés , Barcelona 08193 , Spain.,Dipartimento di Chimica e Farmacia , Università di Sassari , Via Vienna 2 , Sassari I-07100 , Italy
| | - Eugenio Garribba
- Dipartimento di Chimica e Farmacia , Università di Sassari , Via Vienna 2 , Sassari I-07100 , Italy
| | - Jean-Didier Maréchal
- Departament de Química , Universitat Autònoma de Barcelona , Cerdanyola del Vallés , Barcelona 08193 , Spain
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213
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Vandebroek L, Mampaey Y, Antonyuk S, Van Meervelt L, Parac-Vogt TN. Noncovalent Complexes Formed between Metal-Substituted Polyoxometalates and Hen Egg White Lysozyme. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801113] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Laurens Vandebroek
- Department of Chemistry; KU Leuven; Celestijnenlaan 200F box 2404 3001 Heverlee (Leuven) Belgium
| | - Yentl Mampaey
- Department of Chemistry; KU Leuven; Celestijnenlaan 200F box 2404 3001 Heverlee (Leuven) Belgium
| | - Svetlana Antonyuk
- Institute of Integrative Biology; University of Liverpool; Life Sciences Building, Crown Street L69 7ZB Liverpool UK
| | - Luc Van Meervelt
- Department of Chemistry; KU Leuven; Celestijnenlaan 200F box 2404 3001 Heverlee (Leuven) Belgium
| | - Tatjana N. Parac-Vogt
- Department of Chemistry; KU Leuven; Celestijnenlaan 200F box 2404 3001 Heverlee (Leuven) Belgium
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214
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Tanuhadi E, Roller A, Giester G, Kampatsikas I, Rompel A. Synthesis of the first Zn 6-hexagon sandwich-tungstoantimonate via rearrangement of a non-lacunary Krebs-type polyoxotungstate. Dalton Trans 2018; 47:15651-15655. [PMID: 30334554 PMCID: PMC6256361 DOI: 10.1039/c8dt02787k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
For the first time, the Krebs-POM archetype was used as a non-lacunary precursor expanding the rarely reported hexagon sandwich-POM family.
A novel synthetic pathway to obtain the first Zn6 hexagon tungstoantimonate [(Zn(H2O))6(B-α-SbW9O33)2]6– ([Zn6-α-SbW9] (1)) via rearrangement of a non-lacunary Krebs-POM precursor (C12N4H11)4K4[(Mn(H2O)3)2((Mn0.5W0.5)O2)2(B-β-SbW9O33)2] ([Mn-β-SbW9]) has been developed. Addition of ortho-phenylenediamine (opda) in order to optimize the synthesis of [Mn-β-SbW9] led to the crystallization of a novel Krebs-type Zn-POM (C12N4H11)4Na5[((Zn0.8W0.2)(H2O)3)2((Zn0.2W0.8)O2)2(B-β-SbW9O33)2] ([(Zn/W)2-β-SbW9] (2)) comprising four disordered Zn-centers after replacement of MnCl2 with ZnCl2. The compounds were characterized 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 UV-vis spectroscopy and ESI-mass spectrometry. The Krebs-POM archetype and the Zn6 hexagon tungstoantimonate have been investigated towards their interactions with Human Serum Albumin (HSA) as a model protein using SDS-PAGE and trypthophan fluorescence quenching.
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Affiliation(s)
- Elias Tanuhadi
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090 Wien, Austria.
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215
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Modugno G, Fabbretti E, Dalle Vedove A, Da Ros T, Maccato C, Hosseini HS, Bonchio M, Carraro M. Tracking Fluorescent Polyoxometalates within Cells. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800802] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gloria Modugno
- ITM-CNR and Department of Chemical Sciences; University of Padova; Via F. Marzolo 1 Padova Italy
| | - Elsa Fabbretti
- Laboratory for Environmental and Life Sciences; University of Nova Gorica; Vipavska 13 Rožna Dolina, Nova Gorica Slovenia
| | - Andrea Dalle Vedove
- ITM-CNR and Department of Chemical Sciences; University of Padova; Via F. Marzolo 1 Padova Italy
| | - Tatiana Da Ros
- INSTM - Trieste Unit and Department of Chemical and Pharmaceutical Sciences; University of Trieste; Via L. Giorgieri 1 Trieste Italy
| | - Chiara Maccato
- ITM-CNR and Department of Chemical Sciences; University of Padova; Via F. Marzolo 1 Padova Italy
| | - Hadigheh Sadat Hosseini
- ITM-CNR and Department of Chemical Sciences; University of Padova; Via F. Marzolo 1 Padova Italy
| | - Marcella Bonchio
- ITM-CNR and Department of Chemical Sciences; University of Padova; Via F. Marzolo 1 Padova Italy
| | - Mauro Carraro
- ITM-CNR and Department of Chemical Sciences; University of Padova; Via F. Marzolo 1 Padova Italy
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216
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Gumerova NI, Dobrov A, Roller A, Rompel A. Iron(II) and copper(II) paratungstates B: a single-crystal X-ray diffraction study. Acta Crystallogr C Struct Chem 2018; 74:1252-1259. [PMID: 30398176 PMCID: PMC6218883 DOI: 10.1107/s2053229618010021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/11/2018] [Indexed: 11/22/2022] Open
Abstract
Paratungstate B is a common isopolytungstate (IPOT) built of the [W12O40(OH)2]10- anion and exhibits a cluster-like construction of 12 W-centred distorted octahedra. Due to a high surface charge density, the paratungstate anion acts as a multidentate ligand forming high-dimensional extended structures, which exhibit unique catalytic and magnetic properties. Two new paradodecatungstate B compounds decorated by iron(II) or copper(II), namely Na5Fe2.5[W12O40(OH)2]·36H2O (Na5Fe2.5paraB) and Na4Cu3[W12O40(OH)2]·28H2O (Na4Cu3paraB), have been synthesized by a convenient aqueous solution method, and structurally characterized by single-crystal and powder X-ray diffraction, IR spectroscopy, elemental analysis and thermogravimetric analysis. Both compounds crystallize in the triclinic P-1 space group. In both compounds, the [W12O40(OH)2]10- polyanion acts as a multidentate ligand that links transition-metal and sodium cations, forming a three-dimensional framework.
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Affiliation(s)
- Nadiia I. Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Anatolie Dobrov
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Alexander Roller
- Universität Wien, Fakultät für Chemie, Zentrum für Röntgenstrukturanalyse, Währinger Strasse 42, Wien 1090, Austria
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
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217
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Gumerova NI, Blazevic A, Caldera Fraile T, Roller A, Giester G, Rompel A. Synthesis and characterization of hybrid Anderson hexamolybdoaluminates(III) functionalized with indometacin or cinnamic acid. Acta Crystallogr C Struct Chem 2018; 74:1378-1383. [PMID: 30398191 PMCID: PMC6218885 DOI: 10.1107/s2053229618012536] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/05/2018] [Indexed: 11/17/2022] Open
Abstract
The single-side Al-centred tris-functionalized hybrid organic-inorganic Anderson polyoxomolybdates (C16H36N)3[Al(OH)3Mo6O18(OCH2)3CNH(C10H8O)]·C9H7N·4CH3OH·5H2O (AlMo6-NH-Cin; Cin is cinnamic acid, C10H9O2) and (C16H36N)3[Al(OH)3Mo6O18(OCH2)3CNH(C19H15ClNO3)]·9H2O (AlMo6-NH-Indo; Indo is indometacin, C19H16ClNO4) have been prepared in a mild three-step synthesis and structurally characterized by single-crystal X-ray diffraction, 1H NMR and IR spectroscopies and elemental analysis. Both AlMo6-NH-Cin and AlMo6-NH-Indo crystallize in the orthorhombic space group Pbca. The antibacterial activities of AlMo6-NH-Cin and AlMo6-NH-Indo against the Gram-negative human mucosal pathogen Moraxella catarrhalis were investigated by determination of the minimum inhibitory concentration, which is 32 µg ml-1 for AlMo6-NH-Cin and 256 µg ml-1 for AlMo6-NH-Indo.
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Affiliation(s)
- Nadiia I. Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Amir Blazevic
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Tania Caldera Fraile
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstrasse 14, Wien 1090, Austria
| | - Alexander Roller
- Universität Wien, Facultät für Chemie, Zentrum für Röntgenstrukturanalyse, Währinger Strasse 42, Wien 1090, Austria
| | - Gerald Giester
- Universität Wien, Institut für Mineralogie und Kristallographie, 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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218
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Vandebroek L, Van Meervelt L, Parac-Vogt TN. Direct observation of the ZrIV interaction with the carboxamide bond in a noncovalent complex between Hen Egg White Lysozyme and a Zr-substituted Keggin polyoxometalate. Acta Crystallogr C Struct Chem 2018; 74:1348-1354. [DOI: 10.1107/s2053229618010690] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 07/24/2018] [Indexed: 11/11/2022]
Abstract
The successful cocrystallization of the noncovalent complex formed between (Et2NH2)8[{α-PW11O39Zr-(μ-OH)(H2O)}2]·7H2O Keggin polyoxometalate (2) and Hen Egg White Lysozyme (HEWL) protein is reported. The resulting structural model revealed interaction between monomeric [Zr(PW11O39)]4−(1), which is a postulated catalytically active species, and the protein in two positions in the asymmetric unit. The first position (occupancy 36%) confirms the previously observed binding sites on the protein surface, whereas the second position (occupancy 14%) provides novel insights into the hydrolytic mechanisms of ZrIV-substituted polyoxometalates. The new interaction site occurs at the Asn65 residue, which is directly next to the Asp66–Gly67 peptide bond that was identified recently as a cleavage site in the polyoxometalate-catalysed hydrolysis of HEWL. Furthermore, in this newly discovered binding site, the monomeric polyoxometalate 1 is observed to bind directly to the side chain of the Asn65 residue. This binding of ZrIV as a Lewis-acid metal to the carbonyl O atom of the Asn65 side chain is very similar to the intermediate state proposed in density functional theory (DFT) studies in which ZrIV activates the peptide bond via interaction with its carbonyl O atom, and can be thus regarded as a model for interaction between ZrIV and a peptide bond.
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219
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Affiliation(s)
- Aleksandar Bijelic
- Universität WienFakultät für ChemieInstitut für Biophysikalische Chemie Althanstraße 14 1090 Wien Österreich
| | - Manuel Aureliano
- Universidade do AlgarveFaculdade de Ciências e Tecnologia (FCT), CCMar 8005-139 Faro Portugal
| | - Annette Rompel
- Universität WienFakultät für ChemieInstitut für Biophysikalische Chemie Althanstraße 14 1090 Wien Österreich
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220
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Li R, Liu T, Zhang Y, Huang J. Mechanism of Novel K2SO4/KCl Composite Roasting Additive for Strengthening Vanadium Extraction from Vanadium–Titanium Magnetite Concentrate. Minerals 2018; 8:426. [DOI: 10.3390/min8100426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In this paper, a novel K2SO4/KCl composite roasting additive was used to extract vanadium from vanadium–titanium magnetite concentrate. Further, the mechanism of K2SO4/KCl for extracting vanadium was studied. The results indicate that the vanadium leaching efficiency reached 82.04%, an increase of 7.43% compared to that of single K2SO4 and 10.05% compared to single KCl under the following conditions: a total dosage of K2SO4/KCl of 7 wt % with a mass ratio of 6/4, a roasting temperature of 950 °C, a roasting time of 1 h, a leaching temperature of 95 °C, a sulfuric acid concentration of 10% (v/v: volume percentage), and a leaching time of 1.5 h with a liquid-to-solid ratio of 3 mL/g. Moreover, crystal chemistry analyses indicated that the essence of the vanadium extraction with roasting was the conversion of cubic crystal systemic vanadium-bearing magnetite (FeO(Fe,V)2O3) to trigonal crystal systemic hematite (α-Fe2O3), and as most Fe(V)–O bonds were broken with the reconstructed conversion, the dissociation of V(III) occurred. Furthermore, the main decomposition products of K2SO4/KCl were K2O, SO2, and Cl2. X-ray diffraction (XRD) and related SEM-EDS analyses indicated that there were mainly three aspects in the mechanism of K2SO4/KCl for extracting vanadium. Firstly, activated K2O could combine with vanadium to generate soluble KVO3 rather insoluble Ca(VO3)2; secondly, SO2 could react with CaO to form CaSO4 to prevent the generation of acid-consuming Ca(VO3)2, which was beneficial to the dissolution of vanadium-bearing sphene (Ca(Ti,V)SiO4O); thirdly, Cl2 could destroy the structure of hematite (Fe2O3) to reduce its wrapping extent to KVO3.
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Abstract
Protein crystallography is the most widely used method for determining the molecular structure of proteins and obtaining structural information on protein–ligand complexes at the atomic level. As the structure determines the functions and properties of a protein, crystallography is of immense importance for nearly all research fields related to biochemistry. However, protein crystallography suffers from some major drawbacks, whereby the unpredictability of the crystallization process represents the main bottleneck. Crystallization is still more or less a ‘trial and error’ based procedure, and therefore, very time and resource consuming. Many strategies have been developed in the past decades to improve or enable the crystallization of proteins, whereby the use of so-called additives, which are mostly small molecules that make proteins more amenable to crystallization, is one of the most convenient and successful methods. Most of the commonly used additives are, however, restricted to particular crystallization conditions or groups of proteins. Therefore, a more universal additive addressing a wider range of proteins and being applicable to a broad spectrum of crystallization conditions would represent a significant advance in the field of protein crystallography. In recent years, polyoxometalates (POMs) emerged as a promising group of crystallization additives due to their unique structures and properties. In this regard, the tellurium-centered Anderson–Evans polyoxotungstate [TeW6O24]6− (TEW) showed its high potential as crystallization additive. In this lecture text, the development of POMs as tools in protein crystallography are discussed with a special focus on the so far most successful cluster TEW.
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Affiliation(s)
- Aleksandar Bijelic
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090 Vienna, Austria
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Althanstraße 14, 1090 Vienna, Austria
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Gumerova NI, Al-Sayed E, Krivosudský L, Čipčić-Paljetak H, Verbanac D, Rompel A. Antibacterial Activity of Polyoxometalates Against Moraxella catarrhalis. Front Chem 2018; 6:336. [PMID: 30155460 PMCID: PMC6102686 DOI: 10.3389/fchem.2018.00336] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/19/2018] [Indexed: 01/02/2023] Open
Abstract
The antibacterial activity of 29 different polyoxometalates (POMs) against Moraxella catarrhalis was investigated by determination of the minimum inhibitory concentration (MIC). The Preyssler type polyoxotungstate (POT) [NaP5W30O110]14− demonstrates the highest activity against M. catarrhalis (MIC = 1 μg/ml) among all tested POMs. Moreover, we show that the Dawson type based anions, [P2W18O62]6−, [(P2O7)Mo18O54]4−, [As2Mo18O62]6−, [H3P2W15V3O62]6−, and [AsW18O60]7− are selective on M. catarrhalis (MIC range of 2-8 μg/ml). Among the six tested Keggin type based POTs ([PW12O40]3−, [H2PCoW11O40]5−, [H2CoTiW11O40]6−, [SiW10O36]8−, [SbW9O33]9−, [AsW9O33]9−), only the mono-substituted [H2CoTiW11O40]6− showed MIC value comparable to those of the Dawson type group. Polyoxovanadates (POVs) and Anderson type POMs were inactive against M. catarrhalis within the tested concentration range (1-256 μg/ml). Four Dawson type POMs [P2W18O62]6−, [(P2O7)Mo18O54]4−, [As2Mo18O62]6−, [H3P2W15V3O62]6− and the Preyssler POT [NaP5W30O110]14− showed promising antibacterial activity against M. catarrhalis (MICs < 8 μg/ml) and were therefore tested against three additional bacteria, namely S. aureus, E. faecalis, and E. coli. The most potent antibacterial agent was [NaP5W30O110]14−, exhibiting the lowest MIC values of 16 μg/ml against S. aureus and 8 μg/ml against E. faecalis. The three most active compounds ([NaP5W30O110]14−, [P2W18O62]6−, and [H3P2W15V3O62]6−) show bacteriostatic effects in killing kinetics study against M. catarrhalis. We demonstrate, that POM activity is mainly depending on composition, shape, and size, but in the case of medium-size POTs (charge is more than −12 and number of addenda atoms is not being higher than 22) its activity correlates with the total net charge.
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Affiliation(s)
- Nadiia I Gumerova
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Wien, Austria
| | - Emir Al-Sayed
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Wien, Austria
| | - Lukáš Krivosudský
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Wien, Austria
| | - Hana Čipčić-Paljetak
- Center for Translational and Clinical Research, Croatian Center of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Donatella Verbanac
- Center for Translational and Clinical Research, Croatian Center of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Annette Rompel
- Universität Wien, Fakultät für Chemie, Institut für Biophysikalische Chemie, Wien, Austria
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Yong Y, Yang S, Zhao Z. A smart cluster paradigm based Mo-containing polyoxometalate as a new therapeutic strategy for tumor-specific photothermal therapy. Sci Bull (Beijing) 2018; 63:877-8. [PMID: 36658966 DOI: 10.1016/j.scib.2018.06.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Haider A, Zarschler K, Joshi SA, Smith RM, Lin Z, Mougharbel AS, Herzog U, Müller CE, Stephan H, Kortz U. Preyssler-Pope-Jeannin Polyanions [NaP5
W30
O110
]14-
and [AgP5
W30
O110
]14-
: Microwave-Assisted Synthesis, Structure, and Biological Activity. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800113] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Ali Haider
- Department of Life Sciences and Chemistry; Jacobs University; Campus Ring 1 28759 Bremen Germany
- Present address: Department of Chemistry; Quaid-i-Azam University; 45320 Islamabad Pakistan
| | - Kristof Zarschler
- Institute of Radiopharmaceutical Cancer Research; Helmholtz-Zentrum Dresden-Rossendorf; Bautzner Landstraße 400 01328 Dresden Germany
| | - Sachin A. Joshi
- Department of Life Sciences and Chemistry; Jacobs University; Campus Ring 1 28759 Bremen Germany
- Present address: Dr. K.C. Patel Research and Development Centre; Charotar University of Science and Technology (CHARUSAT); 388421 Anand Changa Dist. India
| | - Rachelle M. Smith
- Department of Life Sciences and Chemistry; Jacobs University; Campus Ring 1 28759 Bremen Germany
| | - Zhengguo Lin
- Department of Life Sciences and Chemistry; Jacobs University; Campus Ring 1 28759 Bremen Germany
- Present address: Key Laboratory of Cluster Science; School of Chemistry and Chemical Engineering; Beijing Institute of Technology; 100081 Beijing P. R. China
| | - Ali S. Mougharbel
- Department of Life Sciences and Chemistry; Jacobs University; Campus Ring 1 28759 Bremen Germany
| | - Utta Herzog
- Institute of Radiopharmaceutical Cancer Research; Helmholtz-Zentrum Dresden-Rossendorf; Bautzner Landstraße 400 01328 Dresden Germany
| | - Christa E. Müller
- PharmaCenter Bonn, Pharmaceutical Institute; Pharmaceutical Chemistry I; University of Bonn; An der Immenburg 4 53121 Bonn Germany
| | - Holger Stephan
- Institute of Radiopharmaceutical Cancer Research; Helmholtz-Zentrum Dresden-Rossendorf; Bautzner Landstraße 400 01328 Dresden Germany
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry; Jacobs University; Campus Ring 1 28759 Bremen Germany
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225
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Zamolo VA, Modugno G, Lubian E, Cazzolaro A, Mancin F, Giotta L, Mastrogiacomo D, Valli L, Saccani A, Krol S, Bonchio M, Carraro M. Selective Targeting of Proteins by Hybrid Polyoxometalates: Interaction Between a Bis-Biotinylated Hybrid Conjugate and Avidin. Front Chem 2018; 6:278. [PMID: 30050897 PMCID: PMC6050359 DOI: 10.3389/fchem.2018.00278] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/20/2018] [Indexed: 01/05/2023] Open
Abstract
The Keggin-type polyoxometalate [γ-SiW10O36]8- was covalently modified to obtain a bis-biotinylated conjugate able to bind avidin. Spectroscopic studies such as UV-vis, fluorimetry, circular dichroism, coupled to surface plasmon resonance technique were used to highlight the unique interplay of supramolecular interactions between the homotetrameric protein and the bis-functionalized polyanion. In particular, the dual recognition mechanism of the avidin encompasses (i) a complementary electrostatic association between the anionic surface of the polyoxotungstate and each positively charged avidin subunit and (ii) specific host-guest interactions between each biotinylated arm and a corresponding pocket on the tetramer subunits. The assembly exhibits peroxidase-like reactivity and it was used in aqueous solution for L-methionine methyl ester oxidation by H2O2. The recognition phenomenon was then exploited for the preparation of layer-by-layer films, whose structural evolution was monitored in situ by ATR-FTIR spectroscopy. Finally, cell tracking studies were performed by exploiting the specific interactions with a labeled streptavidin.
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Affiliation(s)
- Valeria A Zamolo
- Department of Chemical Sciences, University of Padova and ITM-CNR, Padova, Italy
| | - Gloria Modugno
- Department of Chemical Sciences, University of Padova and ITM-CNR, Padova, Italy
| | - Elisa Lubian
- Department of Chemical Sciences, University of Padova and ITM-CNR, Padova, Italy
| | - Alessandro Cazzolaro
- Department of Chemical Sciences, University of Padova and ITM-CNR, Padova, Italy
| | - Fabrizio Mancin
- Department of Chemical Sciences, University of Padova and ITM-CNR, Padova, Italy
| | - Livia Giotta
- Department of Biological and Environmental Sciences and Technologies - DiSTeBA, University of Salento, Lecce, Italy
| | - Disma Mastrogiacomo
- Department of Biological and Environmental Sciences and Technologies - DiSTeBA, University of Salento, Lecce, Italy
| | - Ludovico Valli
- Department of Biological and Environmental Sciences and Technologies - DiSTeBA, University of Salento, Lecce, Italy
| | - Alessandra Saccani
- NanoMed Lab, Fondazione IRCCS Institute of Neurology "Carlo Besta," Milan, Italy
| | - Silke Krol
- NanoMed Lab, Fondazione IRCCS Institute of Neurology "Carlo Besta," Milan, Italy.,Laboratory of Translational Nanotechnology, IRCCS Oncologic Institute "Giovanni Paolo II," Bari, Italy
| | - Marcella Bonchio
- Department of Chemical Sciences, University of Padova and ITM-CNR, Padova, Italy
| | - Mauro Carraro
- Department of Chemical Sciences, University of Padova and ITM-CNR, Padova, Italy
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226
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Artiga Á, García-Embid S, De Matteis L, Mitchell SG, de la Fuente JM. Effective in Vitro Photokilling by Cell-Adhesive Gold Nanorods. Front Chem 2018; 6:234. [PMID: 29988482 PMCID: PMC6024193 DOI: 10.3389/fchem.2018.00234] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 06/01/2018] [Indexed: 11/13/2022] Open
Abstract
Upon excitation of their localized surface plasmon resonance (LSPR) band, gold nanorods (AuNRs) show a characteristic light-to-heat transduction, a useful and versatile property for a range of biomedical applications such as photothermal therapy, drug delivery, optoacoustic imaging and biosensing, among others. Nanoparticle (NP)-mediated photothermal therapy (PTT) rests on the ability of nanomaterials to convert light energy into heat and can currently be considered as a promising method for selectively destroying tumor cells by (photo)-thermoablation. One inherent limitation to NP-mediated PTT is that the nanoparticles must arrive at the site of action to exert their function and this typically involves cellular internalization. Here we report the use of the Keggin-type polyoxometalate (POM) phosphotungstic acid (PTA) as an inorganic gelling agent for the encapsulation of plasmonic gold nanorods (AuNRs) inside a biocompatible and cell-adhesive chitosan hydrogel matrix. These functional sub-micrometric containers are non-cytotoxic and present the ability to adhere to the cytoplasmic membranes of cells avoiding any need for cellular internalization, rendering them as highly efficient thermoablating agents of eukaryotic cells in vitro.
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Affiliation(s)
- Álvaro Artiga
- Instituto de Ciencia de Materiales de Aragón, Consejo Superior de Investigaciones Científicas, Universidad de Zaragoza and CIBER-BBN, Zaragoza, Spain
| | - Sonia García-Embid
- Instituto de Ciencia de Materiales de Aragón, Consejo Superior de Investigaciones Científicas, Universidad de Zaragoza and CIBER-BBN, Zaragoza, Spain
| | - Laura De Matteis
- Instituto de Nanociencia de Aragón, Universidad de Zaragoza and CIBER-BBN, Zaragoza, Spain
| | - Scott G. Mitchell
- Instituto de Ciencia de Materiales de Aragón, Consejo Superior de Investigaciones Científicas, Universidad de Zaragoza and CIBER-BBN, Zaragoza, Spain
| | - Jesús M. de la Fuente
- Instituto de Ciencia de Materiales de Aragón, Consejo Superior de Investigaciones Científicas, Universidad de Zaragoza and CIBER-BBN, Zaragoza, Spain
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Gumerova N, Krivosudský L, Fraqueza G, Breibeck J, Al-Sayed E, Tanuhadi E, Bijelic A, Fuentes J, Aureliano M, Rompel A. The P-type ATPase inhibiting potential of polyoxotungstates. Metallomics 2018; 10:287-295. [PMID: 29313547 PMCID: PMC5824666 DOI: 10.1039/c7mt00279c] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 11/30/2017] [Indexed: 02/05/2023]
Abstract
Polyoxometalates (POMs) are transition metal complexes that exhibit a broad diversity of structures and properties rendering them promising for biological purposes. POMs are able to inhibit a series of biologically important enzymes, including phosphatases, and thus are able to affect many biochemical processes. In the present study, we analyzed and compared the inhibitory effects of nine different polyoxotungstates (POTs) on two P-type ATPases, Ca2+-ATPase from skeletal muscle and Na+/K+-ATPase from basal membrane of skin epithelia. For Ca2+-ATPase inhibition, an in vitro study was performed and the strongest inhibitors were determined to be the large heteropolytungstate K9(C2H8N)5[H10Se2W29O103] (Se2W29) and the Dawson-type POT K6[α-P2W18O62] (P2W18) exhibiting IC50 values of 0.3 and 0.6 μM, respectively. Promising results were also shown for the Keggin-based POTs K6H2[CoW11TiO40] (CoW11Ti, IC50 = 4 μM) and Na10[α-SiW9O34] (SiW9, IC50 = 16 μM), K14[As2W19O67(H2O)] (As2W19, IC50 = 28 μM) and the lacunary Dawson K12[α-H2P2W12O48] (P2W12, IC50 = 11 μM), whereas low inhibitory potencies were observed for the isopolytungstate Na12[H4W22O74] (W22, IC50 = 68 μM) and the Anderson-type Na6[TeW6O24] (TeW6, IC50 = 200 μM). Regarding the inhibition of Na+/K+-ATPase activity, for the first time an ex vivo study was conducted using the opercular epithelium of killifish in order to investigate the effects of POTs on the epithelial chloride secretion. Interestingly, 1 μM of the most potent Ca2+-ATPase inhibitor, Se2W29, showed only a minor inhibitory effect (14% inhibition) on Na+/K+-ATPase activity, whereas almost total inhibition (99% inhibition) was achieved using P2W18. The remaining POTs exhibited similar inhibition rates on both ATPases. These results reveal the high potential of some POTs to act as P-type ATPase inhibitors, with Se2W29 showing high selectivity towards Ca2+-ATPase.
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Affiliation(s)
- Nadiia Gumerova
- Universität Wien , Fakultät für Chemie , Institut für Biophysikalische Chemie , Althanstraße. 14 , 1090 Wien , Austria . ; www.bpc.univie.ac.at
| | - Lukáš Krivosudský
- Universität Wien , Fakultät für Chemie , Institut für Biophysikalische Chemie , Althanstraße. 14 , 1090 Wien , Austria . ; www.bpc.univie.ac.at
| | - Gil Fraqueza
- Centre of Marine Sciences , University of Algarve , 8005-139 Faro , Portugal
- Institute of Engineering , University of Algarve , 8005-139 Faro , Portugal
| | - Joscha Breibeck
- Universität Wien , Fakultät für Chemie , Institut für Biophysikalische Chemie , Althanstraße. 14 , 1090 Wien , Austria . ; www.bpc.univie.ac.at
| | - Emir Al-Sayed
- Universität Wien , Fakultät für Chemie , Institut für Biophysikalische Chemie , Althanstraße. 14 , 1090 Wien , Austria . ; www.bpc.univie.ac.at
| | - Elias Tanuhadi
- Universität Wien , Fakultät für Chemie , Institut für Biophysikalische Chemie , Althanstraße. 14 , 1090 Wien , Austria . ; www.bpc.univie.ac.at
| | - Aleksandar Bijelic
- Universität Wien , Fakultät für Chemie , Institut für Biophysikalische Chemie , Althanstraße. 14 , 1090 Wien , Austria . ; www.bpc.univie.ac.at
| | - Juan Fuentes
- Centre of Marine Sciences , University of Algarve , 8005-139 Faro , Portugal
| | - Manuel Aureliano
- Centre of Marine Sciences , University of Algarve , 8005-139 Faro , Portugal
- Faculty of Sciences and Technology , University of Algarve , 8005-139 Faro , Portugal .
| | - Annette Rompel
- Universität Wien , Fakultät für Chemie , Institut für Biophysikalische Chemie , Althanstraße. 14 , 1090 Wien , Austria . ; www.bpc.univie.ac.at
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Salomon W, Rivière E, López X, Suaud N, Mialane P, Haouas M, Saad A, Marrot J, Dolbecq A. Bicapped Keggin polyoxomolybdates: discrete species and experimental and theoretical investigations on the electronic delocalization in a chain compound. Dalton Trans 2018; 47:10636-10645. [DOI: 10.1039/c8dt01313f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Monomeric and 1D reduced Keggin polyoxometalates have been isolated as black crystals soluble in DMSO; DFT calculations allowed the explanation of the magnetic behavior.
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Affiliation(s)
- William Salomon
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Eric Rivière
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- CNRS
- Université Paris Sud and Université Paris Saclay
- Orsay Cedex 91405
- France
| | - Xavier López
- Departament de Química Física i Inorgànica
- Universitat Rovira i Virgili
- 43007 Tarragona
- Spain
| | - Nicolas Suaud
- Laboratoire de Chimie et Physique Quantiques
- IRSAMC
- Université de Toulouse Paul Sabatier
- 31062 Toulouse Cedex
- France
| | - Pierre Mialane
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Mohamed Haouas
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Ali Saad
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Jérôme Marrot
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
| | - Anne Dolbecq
- Institut Lavoisier de Versailles
- UMR CNRS 8180
- Université de Versailles Saint-Quentin en Yvelines
- Université Paris-Saclay
- Versailles 78035 Cedex
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229
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Dopta J, Grzanna S, Näther C, Bensch W. On the influence of the titanium source on the composition and structure of novel titanoniobates. Dalton Trans 2018; 47:15103-15113. [DOI: 10.1039/c8dt02835d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Systematic variation of the titanium source and the reaction temperature applied during hydrothermal synthesis led to crystallization of four new titanoniobates: {[Ni(cyclam)]4[Ti2Nb8O28]}n·∼28nH2O (I), K[Ni(cyclam)]3[TiNb9O28]·xH2O; x = 18 (II), x = 14 (III) and x ∼ 10(IV).
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Affiliation(s)
- Joanna Dopta
- Institut für Anorganische Chemie
- Christian-Albrechts-Universität zu Kiel
- 24118 Kiel
- Germany
| | - Sven Grzanna
- Institut für Anorganische Chemie
- Christian-Albrechts-Universität zu Kiel
- 24118 Kiel
- Germany
| | - Christian Näther
- Institut für Anorganische Chemie
- Christian-Albrechts-Universität zu Kiel
- 24118 Kiel
- Germany
| | - Wolfgang Bensch
- Institut für Anorganische Chemie
- Christian-Albrechts-Universität zu Kiel
- 24118 Kiel
- Germany
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230
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Wang J, Shi W, Li S, Mao Q, Ma P, Niu J, Wang J. Construction of a new binding manner in carboxylic acid-functionalized phosphomolybdates. Dalton Trans 2018; 47:7949-7955. [DOI: 10.1039/c8dt01540f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A new binding manner of C–N–Mo bonds was constructed in carboxylic acid-functionalized phosphomolybdates, and the polyanion was present as a hexamer.
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Affiliation(s)
- Jin Wang
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Wenjie Shi
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Shujie Li
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Qiyun Mao
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Pengtao Ma
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Jingyang Niu
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
| | - Jingping Wang
- Henan Key Laboratory of Polyoxometalate Chemistry
- Institute of Molecular and Crystal Engineering
- College of Chemistry and Chemical Engineering
- Henan University
- Kaifeng 475004
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