151
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Stephan H, Kubeil M, Emmerling F, Müller CE. Polyoxometalates as Versatile Enzyme Inhibitors. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201201224] [Citation(s) in RCA: 123] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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152
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Ju W, Zhang D, Zhu D, Xu Y. l- and d-[Ln(HCO2)(SO4)(H2O)]n (Ln = La, Ce, Pr, Nd, and Eu): Chiral Enantiomerically 3D Architectures Constructed by Double −[Ln–O]n– Helices. Inorg Chem 2012. [DOI: 10.1021/ic302134m] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Weiwei Ju
- College of Chemistry
and Chemical
Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, People's
Republic of China
| | - Deng Zhang
- College of Chemistry
and Chemical
Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, People's
Republic of China
| | - Dunru Zhu
- College of Chemistry
and Chemical
Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, People's
Republic of China
| | - Yan Xu
- College of Chemistry
and Chemical
Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, People's
Republic of China
- Coordination
Chemistry Institute,
State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China
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153
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Tan R, Pang X, Wang H, Cui S, Jiang Y, Wang C, Wang X, Song W. Synthesis, crystal structure and antitumor activities of the dimeric silicotungstate containing cobalt: Na5K7[{β-SiCo2W10O36(OH)2(H2O)}2] ·39.5H2O. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2012.09.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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154
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Dianat S, Tangestaninejad S, Yadollahi B, Bordbar AK, Moghadam M, Mirkhani V, Mohammadpoor-Baltork I. Stability investigation of some heteropolyoxotungstate and heteropolyoxomolybdate salts in buffer solutions. J Mol Liq 2012. [DOI: 10.1016/j.molliq.2012.07.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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155
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Lv H, Geletii YV, Zhao C, Vickers JW, Zhu G, Luo Z, Song J, Lian T, Musaev DG, Hill CL. Polyoxometalate water oxidation catalysts and the production of green fuel. Chem Soc Rev 2012; 41:7572-89. [PMID: 22972187 DOI: 10.1039/c2cs35292c] [Citation(s) in RCA: 531] [Impact Index Per Article: 44.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In the last five years and currently, research on solar fuels has been intense and no sub-area in this field has been more active than the development of water oxidation catalysts (WOCs). In this timeframe, a new class of molecular water oxidation catalysts based on polyoxometalates have been reported that combine the advantages of homogeneous and heterogeneous catalysts. This review addresses central issues in green energy generation, the challenges in water oxidation catalyst development, and the possible uses of polyoxometalates in green energy science.
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Affiliation(s)
- Hongjin Lv
- Department of Chemistry, Emory University, Atlanta, GA 30322, USA
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156
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Yang H, Nkeze J, Zhao RY. Effects of HIV-1 protease on cellular functions and their potential applications in antiretroviral therapy. Cell Biosci 2012; 2:32. [PMID: 22971934 PMCID: PMC3490751 DOI: 10.1186/2045-3701-2-32] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 08/31/2012] [Indexed: 11/10/2022] Open
Abstract
Human Immunodeficiency Virus Type 1 (HIV-1) protease inhibitors (PIs) are the most potent class of drugs in antiretroviral therapies. However, viral drug resistance to PIs could emerge rapidly thus reducing the effectiveness of those drugs. Of note, all current FDA-approved PIs are competitive inhibitors, i.e., inhibitors that compete with substrates for the active enzymatic site. This common inhibitory approach increases the likelihood of developing drug resistant HIV-1 strains that are resistant to many or all current PIs. Hence, new PIs that move away from the current target of the active enzymatic site are needed. Specifically, allosteric inhibitors, inhibitors that prohibit PR enzymatic activities through non-competitive binding to PR, should be sought. Another common feature of current PIs is they were all developed based on the structure-based design. Drugs derived from a structure-based strategy may generate target specific and potent inhibitors. However, this type of drug design can only target one site at a time and drugs discovered by this method are often associated with strong side effects such as cellular toxicity, limiting its number of target choices, efficacy, and applicability. In contrast, a cell-based system may provide a useful alternative strategy that can overcome many of the inherited shortcomings associated with structure-based drug designs. For example, allosteric PIs can be sought using a cell-based system without considering the site or mechanism of inhibition. In addition, a cell-based system can eliminate those PIs that have strong cytotoxic effect. Most importantly, a simple, economical, and easy-to-maintained eukaryotic cellular system such as yeast will allow us to search for potential PIs in a large-scaled high throughput screening (HTS) system, thus increasing the chances of success. Based on our many years of experience in using fission yeast as a model system to study HIV-1 Vpr, we propose the use of fission yeast as a possible surrogate system to study the effects of HIV-1 protease on cellular functions and to explore its utility as a HTS system to search for new PIs to battle HIV-1 resistant strains.
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Affiliation(s)
- Hailiu Yang
- Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, USA.
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157
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Geisberger G, Gyenge EB, Maake C, Patzke GR. Trimethyl and carboxymethyl chitosan carriers for bio-active polymer-inorganic nanocomposites. Carbohydr Polym 2012; 91:58-67. [PMID: 23044105 DOI: 10.1016/j.carbpol.2012.08.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 07/17/2012] [Accepted: 08/04/2012] [Indexed: 01/28/2023]
Abstract
The carrier properties of carboxymethyl chitosan (CMC) and trimethyl chitosan (TMC) in combination with polyoxometalates (POMs) as inorganic drug prototypes are compared with respect to the influence of polymer matrix charge and structure on the emerging composites. A direct crosslinking approach with TMC and K(6)H(2)[CoW(11)TiO(40)]·13H(2)O ({CoW(11)TiO(40)}) as a representative anticancer POM affords nanocomposites with a size range of 50-90nm. The obtained POM-chitosan composites are characterized with a wide range of analytical methods, and POM encapsulation into positively charged TMC brings forward different nanocomposite morphologies and properties than CMC as a carrier material. Furthermore, uptake of fluorescein isothiocyanate (FITC) labeled POM-CMC and POM-TMC by HeLa cells was monitored, and the influence of chlorpromazine (CP) as inhibitor of the clathrin mediated pathway revealed different cellular uptake behavior of composites and pristine carriers. TMC/{CoW(11)TiO(40)} nanocomposites are taken up by HeLa cells after short incubation times around 30 min at low concentrations. The anticancer activity of pristine {CoW(11)TiO(40)} and its TMC-nanocomposites was investigated in vitro with MTT assays and compared to a reference POM.
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Affiliation(s)
- Georg Geisberger
- Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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158
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Polyoxometalates as potent inhibitors for acetyl and butyrylcholinesterases and as potential drugs for the treatment of Alzheimer’s disease. Med Chem Res 2012. [DOI: 10.1007/s00044-012-0125-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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159
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Wang J, Han D, Wang X, Qi B, Zhao M. Polyoxometalates as peroxidase mimetics and their applications in H2O2 and glucose detection. Biosens Bioelectron 2012; 36:18-21. [DOI: 10.1016/j.bios.2012.03.031] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Revised: 03/06/2012] [Accepted: 03/18/2012] [Indexed: 11/25/2022]
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160
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Smoum R, Rubinstein A, Dembitsky VM, Srebnik M. Boron containing compounds as protease inhibitors. Chem Rev 2012; 112:4156-220. [PMID: 22519511 DOI: 10.1021/cr608202m] [Citation(s) in RCA: 303] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Reem Smoum
- The School of Pharmacy, Institute for Drug Research, The Hebrew University of Jerusalem, Faculty of Medicine, Jerusalem, Israel.
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161
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Sawada Y, Yamamoto Y, Nishio M, Kosaka W, Hayashi Y, Miyasaka H. Inorganic Frameworks Made by Combining Paddle-wheel Diruthenium(II, III) Complexes and Polyoxometalate Clusters. CHEM LETT 2012. [DOI: 10.1246/cl.2012.212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuki Sawada
- Department of Chemistry, Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University
| | - Yuma Yamamoto
- Department of Chemistry, Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University
| | - Masaki Nishio
- Department of Chemistry, Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University
| | - Wataru Kosaka
- Department of Chemistry, Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University
| | - Yoshihito Hayashi
- Department of Chemistry, Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University
| | - Hitoshi Miyasaka
- Department of Chemistry, Division of Material Sciences, Graduate School of Natural Science and Technology, Kanazawa University
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162
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Electronic properties and stabilities of methoxy-substituted Lindqvist polyoxometalates [Nb2W4O19CH3]3− by DFT. CHINESE SCIENCE BULLETIN-CHINESE 2012. [DOI: 10.1007/s11434-011-4971-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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163
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Kirichenko OA, Kaziev GZ, Holguin Quinones S, Ivanov SA, Koroteev AM, Solov’eva EA, De Ita Torre A. Synthesis and physicochemical study of di(1,3,7-trimethylpurine-2,6-dione) 12-tungstosilicate (C8N4O2H11)2H2SiW12O40. RUSS J GEN CHEM+ 2012. [DOI: 10.1134/s1070363212020016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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164
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Jahier C, Nlate S. L-Proline-Derived Dendritic Tetrakis(diperoxotungsto)phosphate: Synthesis and Enantioselective Oxidation Catalysis. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201101145] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Claire Jahier
- IECB‐CBMN, UMR CNRS No. 5248, Université Bordeaux 1, 2 Rue Robert Escarpit, 33607 Pessac Cedex, France, Fax: +33‐5‐4000‐2215
| | - Sylvain Nlate
- IECB‐CBMN, UMR CNRS No. 5248, Université Bordeaux 1, 2 Rue Robert Escarpit, 33607 Pessac Cedex, France, Fax: +33‐5‐4000‐2215
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165
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Vanhaecht S, Absillis G, Parac-Vogt TN. Hydrolysis of DNA model substrates catalyzed by metal-substituted Wells–Dawson polyoxometalates. Dalton Trans 2012; 41:10028-34. [DOI: 10.1039/c2dt30588g] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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166
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Zhang H, Peng J, Shen Y, Yu X, Zhang F, Mei J, Li B, Zhang L. Hybrid microtubes of polyoxometalate and fluorescence dye with tunable photoluminescence. Chem Commun (Camb) 2012; 48:4462-4. [DOI: 10.1039/c2cc00132b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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167
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Patel K, Shringarpure P, Patel A. Synthesis, characterisation and catalytic activity of non-crystalline organic–inorganic hybrid material comprising Keggin-type manganese(II)-substituted phosphotungstate and salen. Supramol Chem 2011. [DOI: 10.1080/10610278.2011.636445] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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168
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Carraro M, Modugno G, Fiorani G, Maccato C, Sartorel A, Bonchio M. Organic-Inorganic Molecular Nano-Sensors: A Bis-Dansylated Tweezer-Like Fluoroionophore Integrating a Polyoxometalate Core. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101122] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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169
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Qi YF, Zhang H, Wang J, Jiang Y, Li J, Yuan Y, Zhang S, Xu K, Li Y, Li J, Niu J, Wang E. In vitro anti-hepatitis B and SARS virus activities of a titanium-substituted-heteropolytungstate. Antiviral Res 2011; 93:118-25. [PMID: 22127069 PMCID: PMC7114352 DOI: 10.1016/j.antiviral.2011.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2011] [Revised: 10/01/2011] [Accepted: 11/07/2011] [Indexed: 12/31/2022]
Abstract
A structural determined heteropolytungstate, [K4(H2O)8Cl][K4(H2O)4PTi2W10O40]·NH2OH 1, has been synthesized and evaluated for in vitro antiviral activities against hepatitis B (HBV) and SARS virus. The identity and high purity of compound 1 were confirmed by elemental analysis, NMR, IR analysis and single-crystal X-ray diffraction. The compound 1, evaluated in HepG 2.2.15 cells expressing permanently HBV, significantly reduced the levels of HBV antigens and HBV DNA in a dose-dependent and time-dependent manner. EC50 values were determined to be 54 μM for HBeAg, 61 μM for HBsAg and 2.66 μM for supernatant HBV DNA, as compared to 1671, 1570, 169 μM, respectively, for the commercially-available hepatitis B drug adefovir dipivoxil (ADV). Intracellular cccDNA, pgRNA and HBcAg were also found to be decreased by compound 1 in a concentration-dependent manner. Cytotoxicity results showed that compound 1 has low toxicity in HepG 2 cells with CC50 value of 515.20 μM. The results indicate that compound 1 can efficiently inhibit HBV replication in HepG 2.2.15 cells line in vitro. Additionally, compound 1 also shows high anti-SARS activity at an EC50 of 7.08 μM and toxicity with a CC50 of 118.6 μM against MDCK cells.
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Affiliation(s)
- Yan-fei Qi
- School of Public Health, Jilin University, Changchun, Jilin 130021, PR China
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170
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Kang M, Roberts C, Cheng Y, Chang CEA. Gating and Intermolecular Interactions in Ligand-Protein Association: Coarse-Grained Modeling of HIV-1 Protease. J Chem Theory Comput 2011; 7:3438-46. [PMID: 26598172 DOI: 10.1021/ct2004885] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Most biological processes are initiated or mediated by the association of ligands and proteins. This work studies multistep, ligand-protein association processes by Brownian dynamics simulations with coarse-grained models for HIV-1 protease (HIVp) and its neutral ligands. We report the average association times when the ligand concentration is 100 μM. The influence of crowding on the simulated binding time was also studied. HIVp has flexible loops that serve as a gate during the ligand binding processes. It is believed that the flaps are partially closed most of the time in its free state. To accelerate our simulations, we fixed a part of the HIVp and reparameterized our coarse-grained model, using atomistic molecular dynamics simulations, to reproduce the "gating" motions of HIVp. HIVp-ligand interactions changed the gating behavior of HIVp and helped ligands diffuse on HIVp surface to accelerate binding. The structural adjustment of the ligand toward its final stable state was the limiting step in the binding processes, which is highly system dependent. The intermolecular attraction between the ligands and crowder proteins contributes the most to the crowding effects. The results highlight broader implications in recognition pathways under more complex environment that considers molecular dynamics and conformational changes. This work brings insights into ligand-protein associations and is helpful in the design of targeted ligands.
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Affiliation(s)
- Myungshim Kang
- Department of Chemistry, University of California , Riverside, California, United States
| | - Christopher Roberts
- Department of Chemistry, University of California , Riverside, California, United States
| | - Yuhui Cheng
- Pacific Northwest National Laboratory , Richland, Washington, United States
| | - Chia-En A Chang
- Department of Chemistry, University of California , Riverside, California, United States
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171
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Hydrothermal synthesis, structure characterization and catalytic property of a zigzag chain structural cluster compound built on the novel tetra-capped and centered by NiII. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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172
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Mukherjee P, Shah F, Desai P, Avery M. Inhibitors of SARS-3CLpro: virtual screening, biological evaluation, and molecular dynamics simulation studies. J Chem Inf Model 2011; 51:1376-92. [PMID: 21604711 PMCID: PMC3929308 DOI: 10.1021/ci1004916] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
SARS-CoV from the coronaviridae family has been identified as the etiological agent of Severe Acute Respiratory Syndrome (SARS), a highly contagious upper respiratory disease that reached epidemic status in 2002. SARS-3CL(pro), a cysteine protease indispensible to the viral life cycle, has been identified as one of the key therapeutic targets against SARS. A combined ligand and structure-based virtual screening was carried out against the Asinex Platinum collection. Multiple low micromolar inhibitors of the enzyme were identified through this search, one of which also showed activity against SARS-CoV in a whole cell CPE assay. Furthermore, multinanosecond explicit solvent simulations were carried out using the docking poses of the identified hits to study the overall stability of the binding site interactions as well as identify important changes in the interaction profile that were not apparent from the docking study. Cumulative analysis of the evaluated compounds and the simulation studies led to the identification of certain protein-ligand interaction patterns which would be useful in further structure based design efforts.
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Affiliation(s)
| | - Falgun Shah
- Department of Medicinal Chemistry, School of Pharmacy, University of Mississippi, University, MS 38677
| | | | - Mitchell Avery
- Department of Medicinal Chemistry, School of Pharmacy, University of Mississippi, University, MS 38677
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173
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Discovery of polyoxometalate-based HDAC inhibitors with profound anticancer activity in vitro and in vivo. Eur J Med Chem 2011; 46:2477-84. [DOI: 10.1016/j.ejmech.2011.03.036] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 03/09/2011] [Accepted: 03/16/2011] [Indexed: 12/31/2022]
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174
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Geng J, Li M, Ren J, Wang E, Qu X. Polyoxometalates as Inhibitors of the Aggregation of Amyloid β Peptides Associated with Alzheimer’s Disease. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007067] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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175
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Geng J, Li M, Ren J, Wang E, Qu X. Polyoxometalates as Inhibitors of the Aggregation of Amyloid β Peptides Associated with Alzheimer’s Disease. Angew Chem Int Ed Engl 2011; 50:4184-8. [DOI: 10.1002/anie.201007067] [Citation(s) in RCA: 179] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Revised: 02/16/2011] [Indexed: 01/23/2023]
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176
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Guo R, Cheng Y, Ding D, Li X, Zhang L, Jiang X, Liu B. Synthesis and antitumoral activity of gelatin/polyoxometalate hybrid nanoparticles. Macromol Biosci 2011; 11:839-47. [PMID: 21416607 DOI: 10.1002/mabi.201000434] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 02/02/2011] [Indexed: 11/07/2022]
Abstract
Surfactant-free gelatin/heptamolybdate (HM) hybrid nanoparticles are prepared by a simple and environmentally friendly approach utilizing the electrostatic interaction between anionic HM and the zwitterionic gelatin. The obtained nanoparticles have a tunable size and very high HM loading content up to about 70%. In vitro and in vivo experiments prove that the gelatin/HM hybrid nanoparticles exhibit significantly better antitumor activity than plain ammonium heptamolybdate solution. Therefore, the gelatin/HM hybrid nanoparticles reported here may serve as a prototype platform for polymer/polyoxometalate (POM) hybrid nanoparticles as cancer treatment agents and hence open up more opportunities to maximize the potential of POM-based pharmaceutical agents.
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Affiliation(s)
- Rui Guo
- Laboratory of Mesoscopic Chemistry, and Department of Polymer Science & Engineering, College of Chemistry & Chemical Engineering, Nanjing University, Nanjing, China
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177
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Berardi S, Carraro M, Sartorel A, Modugno G, Bonchio M. Hybrid Polyoxometalates: Merging Organic and Inorganic Domains for Enhanced Catalysis and Energy Applications. Isr J Chem 2011. [DOI: 10.1002/ijch.201100018] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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178
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Hydrothermal Syntheses and Crystal Structures of Two New Heteropolyoxovanadoborates Containing {(VO)12O6[B3O6(OH)]6(H2O)} Cluster. J CLUST SCI 2011. [DOI: 10.1007/s10876-011-0359-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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179
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Shen Y, Peng J, Pang H, Zhang P, Chen D, Chen C, Zhang H, Meng C, Su Z. Preparation and Application of Multiple‐Component‐Doped Keggin Polyoxometalate Microtubes—Towards a Component‐Tunable Hollow Structure. Chemistry 2011; 17:3657-62. [DOI: 10.1002/chem.201001837] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Indexed: 11/10/2022]
Affiliation(s)
- Yan Shen
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, (P. R. China), Fax: (+86) 4315099765
| | - Jun Peng
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, (P. R. China), Fax: (+86) 4315099765
| | - Haijun Pang
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, (P. R. China), Fax: (+86) 4315099765
| | - Pengpeng Zhang
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, (P. R. China), Fax: (+86) 4315099765
| | - Dan Chen
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, (P. R. China), Fax: (+86) 4315099765
| | - Changyun Chen
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, (P. R. China), Fax: (+86) 4315099765
| | - Huanqiu Zhang
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, (P. R. China), Fax: (+86) 4315099765
| | - Cuili Meng
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, (P. R. China), Fax: (+86) 4315099765
| | - Zhongmin Su
- Key Laboratory of Polyoxometalate Science of Ministry of Education Faculty of Chemistry, Northeast Normal University, Changchun, Jilin, 130024, (P. R. China), Fax: (+86) 4315099765
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180
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Thorimbert S, Hasenknopf B, Lacôte E. Cross-Linking Organic and Polyoxometalate Chemistries. Isr J Chem 2011. [DOI: 10.1002/ijch.201000080] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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181
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Geisberger G, Paulus S, Carraro M, Bonchio M, Patzke GR. Synthesis, Characterisation and Cytotoxicity of Polyoxometalate/Carboxymethyl Chitosan Nanocomposites. Chemistry 2011; 17:4619-25. [DOI: 10.1002/chem.201002815] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 12/12/2010] [Indexed: 11/09/2022]
Affiliation(s)
- Georg Geisberger
- Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich (Switzerland), Fax: (+41) 44‐635‐6802
| | - Susann Paulus
- Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich (Switzerland), Fax: (+41) 44‐635‐6802
| | - Mauro Carraro
- ITM‐CNR and Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova (Italy)
| | - Marcella Bonchio
- ITM‐CNR and Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova (Italy)
| | - Greta R. Patzke
- Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich (Switzerland), Fax: (+41) 44‐635‐6802
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182
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Jahier C, Coustou MF, Cantuel M, McClenaghan ND, Buffeteau T, Cavagnat D, Carraro M, Nlate S. Optically Active Tripodal Dendritic Polyoxometalates: Synthesis, Characterization and Their Use in Asymmetric Sulfide Oxidation with Hydrogen Peroxide. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001111] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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183
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Shen Y, Peng J, Chen C, Zhang H, Meng C, Li X. Synthesis and characterization of Zn2+/Cd2+ doped polyoxometalate microtubes. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2010.10.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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184
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Wang J, Mi X, Guan H, Wang X, Wu Y. Assembly of folate-polyoxometalate hybrid spheres for colorimetric immunoassay like oxidase. Chem Commun (Camb) 2011; 47:2940-2. [DOI: 10.1039/c0cc04850j] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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185
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Burton-Pye BP, Francesconi LC. Speciation of organic-soluble europium(iii) α1-Wells–Dawson complexes. Dalton Trans 2011; 40:4421-33. [DOI: 10.1039/c0dt01309a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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186
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Wei Y, Wu K, He J, Zheng W, Xiao X. A chirally helical coordination polymer self-assembled with the ligand 2-(2-carboxyphenyl)imidazo(4,5-f)(1,10)phenanthroline: crystal structure, SHG response and tunable photoluminescence. CrystEngComm 2011. [DOI: 10.1039/c0ce00547a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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187
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Shen Y, Peng J, Zhang H, Chen C, Zhang F, Bond AM. In situ immobilization of Ag nanoparticles on Keggin heteropoly blue microtubes. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm10114e] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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188
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Zang HY, Lan YQ, Li SL, Yang GS, Shao KZ, Wang XL, Yan LK, Su ZM. Step-wise synthesis of inorganic–organic hybrid based on γ-octamolybdate-based tectons. Dalton Trans 2011; 40:3176-82. [DOI: 10.1039/c0dt00656d] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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189
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190
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Flütsch A, Schroeder T, Grütter MG, Patzke GR. HIV-1 protease inhibition potential of functionalized polyoxometalates. Bioorg Med Chem Lett 2010; 21:1162-6. [PMID: 21256010 PMCID: PMC7126215 DOI: 10.1016/j.bmcl.2010.12.103] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 12/20/2010] [Accepted: 12/21/2010] [Indexed: 11/21/2022]
Abstract
Polyoxometalates (POMs) are interesting biomedical agents due to their versatile anticancer and antiviral properties, such as remarkable anti-HIV activity. Although POMs are tunable and easily accessible inorganic drug prototypes in principle, their full potential can only be tapped by enhancing their biocompatibility, for example, through organic functionalization. We have therefore investigated the HIV-1 protease inhibition potential of functionalized Keggin- and Dawson-type POMs with organic side chains. Their inhibitory performance was furthermore compared to other POM types, and the buffer dependence of the results is discussed. In addition, chemical shift mapping NMR experiments were performed to exclude POM–substrate interactions. Whereas the introduction of organic side chains into POMs is a promising approach in principle, the influence of secondary effects on the reaction system also merits detailed investigation.
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Affiliation(s)
- Andreas Flütsch
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Thilo Schroeder
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Markus G. Grütter
- Department of Biochemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Greta R. Patzke
- Institute of Inorganic Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
- Corresponding author. Tel.: +41 44 635 4691; fax: +41 44 635 6802.
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191
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Pilette MA, Marrot J, Sécheresse F, Cadot E. Control of the modularity of {Mo2O2S2}-containing polyoxometalates. Synthesis, structure and characterization of tri- and tetra-modular assemblies based on the [β-B-AsW9O33]9− anion. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.06.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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192
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On the mechanisms of the reaction of dodecatungstophosphate with alkyl radicals in aqueous solutions. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.06.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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193
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Zhou J, Zhang J, Fang WH, Yang GY. A Series of Vanadogermanates from 1D Chain to 3D Framework Built by Ge-V-O Clusters and Transition-Metal-Complex Bridges. Chemistry 2010; 16:13253-61. [DOI: 10.1002/chem.201001434] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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194
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Niu JY, Chen G, Zhao JW, Ma PT, Li SZ, Wang JP, Li MX, Bai Y, Ji BS. Two novel copper-undecaniobates decorated by copper-organic cations [{Cu(H2O)L}2{CuNb11O35H4}]5- (L=1,10-phenanthroline, 2,2'-bipyridine) consisting of plenary and monolacunary Lindqvist-type isopolyniobate fragments. Chemistry 2010; 16:7082-6. [PMID: 20468045 DOI: 10.1002/chem.201000824] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jing-Yang Niu
- Institute of Molecular and Crystal Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China
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195
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Identification of broad-based HIV-1 protease inhibitors from combinatorial libraries. Biochem J 2010; 429:527-32. [PMID: 20507280 DOI: 10.1042/bj20091645] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Clinically approved inhibitors of the HIV-1 protease function via a competitive mechanism. A particular vulnerability of competitive inhibitors is their sensitivity to increases in substrate concentration, as may occur during virion assembly, budding and processing into a mature infectious viral particle. Advances in chemical synthesis have led to the development of new high-diversity chemical libraries using rapid in-solution syntheses. These libraries have been shown previously to be effective at disrupting protein-protein and protein-nucleic acid interfaces. We have screened 44000 compounds from such a library to identify inhibitors of the HIV-1 protease. One compound was identified that inhibits wild-type protease, as well as a drug-resistant protease with six mutations. Moreover, analysis of this compound suggests an allosteric non-competitive mechanism of inhibition and may represent a starting point for an additional strategy for anti-retroviral therapy.
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196
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Hungerford G, Hussain F, Patzke GR, Green M. The photophysics of europium and terbium polyoxometalates and their interaction with serum albumin: a time-resolved luminescence study. Phys Chem Chem Phys 2010; 12:7266-75. [PMID: 20490399 DOI: 10.1039/b925547h] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyoxometalates (POMs) are emerging as useful materials for a variety of applications. Many show potential for use in the biological and medical fields. Those incorporating lanthanides, with their narrow emission bands, large Stokes' shift and tuneable emission are of particular interest for the labelling and imaging of biological molecules. Their longer emission timescale (micros to ms) also allows autofluorescence from the biological samples to be removed by time gating the emission decay. This means that the characterisation of their photophysical properties is required to enable their application. In this work we present a time-resolved emission study of two types of POM structure, a simple europium containing decatungstate and a more complex high nuclear polyoxotungstate, containing either europium or terbium. A concentration study, made monitoring the lanthanide emission helped elucidate POM-POM interactions. The use of global analysis hints at the presence of defined POM aggregates. Interaction with serum albumin was ascertained, both by monitoring the lanthanide emission of the POM and the tryptophan emission from the serum albumin. This showed that the more complex structure had a significantly higher affinity for the protein than the simple structure.
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Affiliation(s)
- Graham Hungerford
- HORIBA Jobin Yvon IBH Ltd., 45 Finnieston Street, Glasgow G3 8JU, UK.
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197
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Zhang L, Zhang Y, Hao Z, Luo F. Synthesis, Structure, and Magnetic Properties of Three Novel Sandwich-type Tungstobismuthates with Triethanolamine. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.201000011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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198
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Molecular interaction between europium decatungstate and histone H1 and its application as a novel biological labeling agent. J Biol Inorg Chem 2010; 15:1079-85. [DOI: 10.1007/s00775-010-0667-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2010] [Accepted: 04/13/2010] [Indexed: 11/26/2022]
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199
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200
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Zhang LC, Xue H, Zhu ZM, Zhang ZM, Li YG, Wang EB. Two New {P8W49} Wheel-shaped Tungstophosphates Decorated by Co(II), Ni(II) Ions. J CLUST SCI 2010. [DOI: 10.1007/s10876-010-0286-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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