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Babaei Zarch M, Bazargan M, Mirzaei M. Selective Hydrolysis of Ovalbumin by Zr-Based Lacunary Polyoxotungstate in Surfactant Solutions. Inorg Chem 2024; 63:6141-6151. [PMID: 38530420 DOI: 10.1021/acs.inorgchem.3c03411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2024]
Abstract
This study aims to design an artificial metalloprotease based on a Zr-containing polyoxometalate Na8[Zr(W5O18)2] [Zr(W5)2] for the hydrolysis of ovalbumin (OVA) in the presence of different surfactants, which can be used in many areas of the biological and medical sciences, particularly for targeted proteolytic drug design. For this reason, parameters, including the free energy of binding, the chemical nature of amino acid residues, secondary structures, and electrostatic potentials, of Zr(W5)2-OVA and Zr(W5)2-OVA-surfactant were analyzed by molecular docking simulations. The investigations showed that the presence of surfactants decreases the binding affinity of Zr(W5)2 for OVA amino acids, and hydrogen bonds and van der Waals interactions are formed between Zr(W5)2 and OVA amino acids. Additionally, GROMACS further illustrated the significance of SDS and CTAB surfactants in influencing the conformational changes of the OVA that lead to selective protein hydrolysis. In agreement with molecular dynamics simulation results, the experimental analysis showed more protein hydrolysis for the Zr(W5)2-OVA-surfactant systems. For instance, circular dichroism spectroscopy indicated that Zr(W5)2-OVA-CTAB and Zr(W5)2-OVA-TX-100 were more hydrolytically efficient due to the increased level of β-structures rather than α-chains, which showed that surfactants can facilitate the accessibility of Zr(W5)2 to the cleavage sites by inducing partial unfolding of the OVA structure.
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Affiliation(s)
- Malihe Babaei Zarch
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
| | - Maryam Bazargan
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
| | - Masoud Mirzaei
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad 9177948974, Iran
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Petrovskii SK, Grachova EV, Monakhov KY. Bioorthogonal chemistry of polyoxometalates - challenges and prospects. Chem Sci 2024; 15:4202-4221. [PMID: 38516091 PMCID: PMC10952089 DOI: 10.1039/d3sc06284h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 02/19/2024] [Indexed: 03/23/2024] Open
Abstract
Bioorthogonal chemistry has enabled scientists to carry out controlled chemical processes in high yields in vivo while minimizing hazardous effects. Its extension to the field of polyoxometalates (POMs) could open up new possibilities and new applications in molecular electronics, sensing and catalysis, including inside living cells. However, this comes with many challenges that need to be addressed to effectively implement and exploit bioorthogonal reactions in the chemistry of POMs. In particular, how to protect POMs from the biological environment but make their reactivity selective towards specific bioorthogonal tags (and thereby reduce their toxicity), as well as which bioorthogonal chemistry protocols are suitable for POMs and how reactions can be carried out are questions that we are exploring herein. This perspective conceptualizes and discusses advances in the supramolecular chemistry of POMs, their click chemistry, and POM-based surface engineering to develop innovative bioorthogonal approaches tailored to POMs and to improve POM biological tolerance.
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Affiliation(s)
| | - Elena V Grachova
- Institute of Chemistry, St Petersburg University Universitetskii pr. 26 St. Petersburg 198504 Russia
| | - Kirill Yu Monakhov
- Leibniz Institute of Surface Engineering (IOM) Permoserstr. 15 Leipzig 04318 Germany
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Li B, Xu X, Lv Y, Wu Z, He L, Song YF. Polyoxometalates as Potential Artificial Enzymes toward Biological Applications. Small 2024; 20:e2305539. [PMID: 37699754 DOI: 10.1002/smll.202305539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/09/2023] [Indexed: 09/14/2023]
Abstract
Artificial enzymes, as alternatives to natural enzymes, have attracted enormous attention in the fields of catalysis, biosensing, diagnostics, and therapeutics because of their high stability and low cost. Polyoxometalates (POMs), a class of inorganic metal oxides, have recently shown great potential in mimicking enzyme activity due to their well-defined structure, tunable composition, high catalytic efficiency, and easy storage properties. This review focuses on the recent advances in POM-based artificial enzymes. Different types of POMs and their derivatives-based mimetic enzyme functions are covered, as well as the corresponding catalytic mechanisms (where available). An overview of the broad applications of representative POM-based artificial enzymes from biosensing to theragnostic is provided. Insight into the current challenges and the future directions for POMs-based artificial enzymes is discussed.
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Affiliation(s)
- Bole Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Xiaotong Xu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Yanfei Lv
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Zhaohui Wu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Lei He
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Yu-Fei Song
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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Huang Z, Wang J, Chen H, Feng R, Tan C. The interaction on HSA and the antibacterial activity from four polyoxometalate hybrids based on berberine. Nucleosides Nucleotides Nucleic Acids 2023; 43:156-172. [PMID: 37574837 DOI: 10.1080/15257770.2023.2243292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 08/15/2023]
Abstract
Four organic-polyoxometalate hybrids BR4[SiW12O40] (BR-SiW), BR3[PMo12O40] (BR-PMo), BR4K[EuSiW11O40]·2H2O (BR-EuSiW) and BR6Na3[EuW10O36] (BR-EuW) were fabricated by the polyoxometalates (POMs) anions and berberine cations (BR) noted for the alkaloids in traditional Chinese herbal medicine. These hybrids have been characterized and confirmed. The interaction between hybrids and human serum albumin (HSA) was investigated in a buffer solution (pH 7.4) using ultraviolet-visible light absorption and fluorescence techniques. The classical Stern-Volmer equation was used to analyze the fluorescence quenching at three temperatures (296, 303 and 310 K), and the static quenching mechanism for interaction was proposed. The Thermodynamic parameters, enthalpy, entropy change, and Gibbs free energy of hybrids interacting on HSA were calculated by Scatchard equation. The results indicated that therewas one binding site on the protein and BR-POMs all showed stronger binding force than that of raw materials. Synchronous fluorescence results showed that the binding sites of BR-POMs and HSA were not effectively affected the surrounding microenvironment. The following antibacterial experiments implied that inhibitory effect of hybrids were synergistic effect from organic active ingredient and POMs but the simple combination. All these data were prepared for further research on biology.
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Affiliation(s)
- Zizhen Huang
- Gansu University of Traditional Chinese Medicine, Lanzhou, PR China
| | - Jie Wang
- Gansu University of Traditional Chinese Medicine, Lanzhou, PR China
| | - Hui Chen
- Gansu University of Traditional Chinese Medicine, Lanzhou, PR China
| | - Ruofei Feng
- Gansu Tech Innovation Center of Animal Cell, Biomedical Research Center, Northwest Minzu University, Lanzhou, PR China
| | - Chunxia Tan
- Gansu University of Traditional Chinese Medicine, Lanzhou, PR China
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Stojanović M, Lalatović J, Milosavljević A, Savić N, Simms C, Radosavljević B, Ćetković M, Kravić Stevović T, Mrda D, Čolović MB, Parac-Vogt TN, Krstić D. In vivo toxicity evaluation of a polyoxotungstate nanocluster as a promising contrast agent for computed tomography. Sci Rep 2023; 13:9140. [PMID: 37277558 DOI: 10.1038/s41598-023-36317-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 06/01/2023] [Indexed: 06/07/2023] Open
Abstract
In this study, we demonstrate for the first time, that a discrete metal-oxo cluster α-/β-K6P2W18O62 (WD-POM) exhibits superior performance as a computed tomography (CT) contrast agent, in comparison to the standard contrast agent iohexol. A toxicity evaluation of WD-POM was performed according to standard toxicological protocols using Wistar albino rats. The maximum tolerable dose (MTD) of 2000 mg/kg was initially determined after oral WD-POM application. The acute intravenous toxicity of single WD-POM doses (1/3, 1/5, and 1/10 MTD), which are at least fifty times higher than the typically used dose (0.015 mmol W kg-1) of tungsten-based contrast agents, was evaluated for 14 days. The results of arterial blood gas analysis, CO-oximetry status, electrolyte and lactate levels for 1/10 MTD group (80% survival rate) indicated the mixed respiratory and metabolic acidosis. The highest deposition of WD-POM (0.6 ppm tungsten) was found in the kidney, followed by liver (0.15 ppm tungsten), for which the histological analysis revealed morphological irregularities, although the renal function parameters (creatinine and BUN levels) were within the physiological range. This study is the first and important step in evaluating side effects of polyoxometalate nanoclusters, which in recent years have shown a large potential as therapeutics and contrast agents.
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Affiliation(s)
- Marko Stojanović
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Jovana Lalatović
- Department of Radiology, University Hospital Medical Center Bežanijska Kosa, Belgrade, Serbia
| | - Aleksandra Milosavljević
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Nada Savić
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Charlotte Simms
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Branimir Radosavljević
- Institute of Medical Chemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Mila Ćetković
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Tamara Kravić Stevović
- Institute of Histology and Embryology, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Davor Mrda
- Department of Radiology, University Hospital Medical Center Bežanijska Kosa, Belgrade, Serbia
| | - Mirjana B Čolović
- "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia.
| | - Tatjana N Parac-Vogt
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium.
| | - Danijela Krstić
- Institute of Medical Chemistry, Faculty of Medicine, University of Belgrade, Belgrade, Serbia.
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Abdelhameed SAM, de Azambuja F, Vasović T, Savić ND, Ćirković Veličković T, Parac-Vogt TN. Regioselective protein oxidative cleavage enabled by enzyme-like recognition of an inorganic metal oxo cluster ligand. Nat Commun 2023; 14:486. [PMID: 36717594 PMCID: PMC9887005 DOI: 10.1038/s41467-023-36085-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 01/16/2023] [Indexed: 02/01/2023] Open
Abstract
Oxidative modifications of proteins are key to many applications in biotechnology. Metal-catalyzed oxidation reactions efficiently oxidize proteins but with low selectivity, and are highly dependent on the protein surface residues to direct the reaction. Herein, we demonstrate that discrete inorganic ligands such as polyoxometalates enable an efficient and selective protein oxidative cleavage. In the presence of ascorbate (1 mM), the Cu-substituted polyoxometalate K8[Cu2+(H2O)(α2-P2W17O61)], (CuIIWD, 0.05 mM) selectively cleave hen egg white lysozyme under physiological conditions (pH =7.5, 37 °C) producing only four bands in the gel electropherogram (12.7, 11, 10, and 5 kDa). Liquid chromatography/mass spectrometry analysis reveals a regioselective cleavage in the vicinity of crystallographic CuIIWD/lysozyme interaction sites. Mechanistically, polyoxometalate is critical to position the Cu at the protein surface and limit the generation of oxidative species to the proximity of binding sites. Ultimately, this study outlines the potential of discrete, designable metal oxo clusters as catalysts for the selective modification of proteins through radical mechanisms under non-denaturing conditions.
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Affiliation(s)
| | | | - Tamara Vasović
- Center of Excellence for Molecular Food Sciences & Department of Biochemistry, University of Belgrade - Faculty of Chemistry, Belgrade, Serbia
| | - Nada D Savić
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, 3001, Leuven, Belgium
| | - Tanja Ćirković Veličković
- Center of Excellence for Molecular Food Sciences & Department of Biochemistry, University of Belgrade - Faculty of Chemistry, Belgrade, Serbia.,Ghent University Global Campus, Yeonsu-gu, Incheon, South Korea.,Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.,Serbian Academy of Sciences and Arts, Belgrade, Serbia
| | - Tatjana N Parac-Vogt
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, 3001, Leuven, Belgium.
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Abstract
Polyoxometalates (POMs) are a series of molecular metal compounds based on W and Mo elements, exhibiting excellent physical and chemical properties. POMs have been widely used in the fields of photoelectric materials, catalytic materials, and coordination chemistry. In recent years, POMs have emerged in the field of chemiresistive gas sensors. They can work as electron acceptors and improve the gas-sensing performance of traditional sensing materials by means of capturing electrons from semiconductors, separating electrons produced by light excitation or thermal excitation and delaying the recombination of electrons and holes. So far, the highest sensing sensitivity response of POMs-based chemiresistive gas sensor is 231 to 1 ppm NO2 gas. In this review, an overview is investigated about how POMs have evolved as sensing materials in gas sensors. First, some POMs and POMs-based sensing materials in recent years are introduced and classified. After that, brief analyses for each kind of sensing materials are provided. Then we compare the reported POMs-based sensors in different sensing parameters. Finally, the future outlooks are discussed on the basis of the current developments. This work is the first comprehensive overview of POMs-based chemiresistive gas sensors. This work can provide valuable information for developing high-performance POMs-based gas sensors.
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Affiliation(s)
- Pinfan Song
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Tianqi Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China
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8
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Wang D, Wang Y, Zhang X, Lv Q, Ma G, Gao Y, Liu S, Wang C, Li C, Sun X, Wan J. A Polyoxometalate-Encapsulated Metal-Organic Framework Nanoplatform for Synergistic Photothermal-Chemotherapy and Anti-Inflammation of Ovarian Cancer. Molecules 2022; 27:molecules27238350. [PMID: 36500444 PMCID: PMC9738349 DOI: 10.3390/molecules27238350] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/18/2022] [Accepted: 11/26/2022] [Indexed: 12/03/2022] Open
Abstract
Photothermal therapy (PTT), as a noninvasive and local treatment, has emerged as a promising anti-tumor strategy with minimal damage to normal tissue under spatiotemporally controllable irradiation. However, the necrosis of cancer cells during PTT will induce an inflammatory reaction, which may motivate tumor regeneration and resistance to therapy. In this study, polyoxometalates and a chloroquine diphosphate (CQ) co-loaded metal-organic framework nanoplatform with hyaluronic acid coating was constructed for efficient ovarian cancer therapy and anti-inflammation. Our results demonstrated that this nanoplatform not only displayed considerable photothermal therapeutic capacity under 808 nm near-infrared laser, but also had an impressive anti-inflammatory capacity by scavenging reactive oxygen species in the tumor microenvironment. CQ with pH dependence was used for the deacidification of lysosomes and the inhibition of autophagy, cutting off a self-protection pathway induced by cell necrosis-autophagy, and achieving the synergistic treatment of tumors. Therefore, we combined the excellent properties of these materials to synthesize a nanoplatform and explored its therapeutic effects in various aspects. This work provides a promising novel prospect for PTT/anti-inflammation/anti-autophagy combinations for efficient ovarian cancer treatment through the fine tuning of material design.
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Affiliation(s)
- Diqing Wang
- Department of Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Yuqi Wang
- Department of Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Xinyu Zhang
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Qian Lv
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Guiqi Ma
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Yuan Gao
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Shuangqing Liu
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
| | - Chenyu Wang
- Department of Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Changzhong Li
- Department of Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
- Department of Obstetrics and Gynecology, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Correspondence: (C.L.); (X.S.); (J.W.)
| | - Xiao Sun
- School of Chemistry and Pharmaceutical Engineering, Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250000, China
- Correspondence: (C.L.); (X.S.); (J.W.)
| | - Jipeng Wan
- Department of Gynecology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
- Correspondence: (C.L.); (X.S.); (J.W.)
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