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Li C, Jiang HY, Wang JL, Kang RK, Mei H, Xu Y. An isolated doughnut-like molybdenum(V) cobalto-phosphate cluster exhibiting excellent photocatalytic performance for carbon dioxide conversion. Dalton Trans 2022; 51:9616-9621. [PMID: 35695846 DOI: 10.1039/d2dt01276f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An isolated doughnut-like molybdenum(V) cobalto-phosphate cluster with the formula (C11NH10)2{[Co(H2O)6]@[H29Co16Mo16(H2O)16(PO4)24O36]}(H2PO4)·25H2O has been successfully synthesized by a hydrothermal method. Single crystal X ray diffraction analysis shows that four {Co4O60} tetramers and eight {Mo2O10} dimers are linked by oxygen atoms and phosphate groups to construct a doughnut-type structure for [Co@{Co16Mo16}], in which one [CoII(H2O)6]2+ octahedron is enclosed. More importantly, [Co@{Co16Mo16}] exhibits promising photocatalytic performance for CO2 reduction with the CO formation rate of 6764.3 μmol g-1 h-1 and the selectivity of 96.89%. In addition, the cycling test indicated that [Co@{Co16Mo16}] can be reused for at least four cycles without significant loss of catalytic activity. The result of this work may provide new insight for the synthesis of highly efficient POM-based photocatalysts for CO2 reduction.
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Affiliation(s)
- Cheng Li
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China.
| | - Heng-Yu Jiang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, P. R. China
| | - Ji-Lei Wang
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China.
| | - Run-Kun Kang
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China.
| | - Hua Mei
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China.
| | - Yan Xu
- College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China.
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Effective detection of tyrosinase by Keggin-type polyoxometalate-based electrochemical sensor. J Solid State Electrochem 2021. [DOI: 10.1007/s10008-021-05085-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Li J, Chi G, Wang L, Wang F, He S. Isolation, identification, and inhibitory enzyme activity of phenolic substances present in Spirulina. J Food Biochem 2020; 44:e13356. [PMID: 32627220 DOI: 10.1111/jfbc.13356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/12/2020] [Accepted: 06/09/2020] [Indexed: 11/28/2022]
Abstract
Spirulina species are edible with high nutritional as well as potential therapeutic values. In this work, we show that phenolic extracts from Spirulina (p-Coumaric acid) possessed inhibitory potential on α-glucosidase (IC50 = 1.67 ± 0.02 mM) and tyrosinase (IC50 = 52.71 ± 3.01 mM). Moreover, p-Coumaric acid inhibited α-glucosidase and tyrosinase in a reversible mixed-type manner. Interestingly, molecular docking demonstrated that p-Coumaric acid penetrated in depth of the active-site of tyrosinase and α-glucosidase by the noncovalent force or interaction. Among them, making polar interactions with Cu2+ ions and the amino acid residue capable of forming cation-π significantly contribute to the strong binding of p-Coumaric acid on tyrosinase. p-Coumaric acid was isolated and identified from Spirulina for the first time, which can be used as a lead compound for the design of functional food additives and skin-lightening active ingredient in cosmetics, and pharmaceuticals against type 2 diabetes. PRACTICAL APPLICATIONS: A natural, food-derived compound possessing the potential for the development of an anti-hyperglycaemic and skin-lightening supplement is very promising in cosmetics, functional food, and pharmaceuticals against type 2 diabetes. Herein, the present study is the first to present high levels of p-Coumaric acid from Spirulina, which simultaneously possessed inhibition potential on α-glucosidase and tyrosinase. Importantly, we gained initial information about the polypeptide-inhibitor interactions and underlying mechanisms for Spirulina's therapeutic effects, which will provide the bases for developing new drugs for preventing or treating type 2 diabetes and enzyme inhibitors. Moreover, this work also demonstrates the potential of the extraction of high-value chemicals from Spirulina waste.
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Affiliation(s)
- Jian Li
- College of Food and Biological Engineering, Jimei University, Xiamen, P.R. China
| | - Guoxiang Chi
- College of Food and Biological Engineering, Jimei University, Xiamen, P.R. China
| | - Li Wang
- College of Food and Biological Engineering, Jimei University, Xiamen, P.R. China
| | - Fang Wang
- College of Chemistry and Life Science, Quanzhou Normal College, Quanzhou, P.R. China
| | - Shansheng He
- College of Food and Biological Engineering, Jimei University, Xiamen, P.R. China
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Sławińska A, Serda P, Oszajca M, Pamin K, Połtowicz J, Łasocha W. Synthesis, crystal structure and selected properties of two new peroxidomolybdates. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114530] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Wang Y, Wang F, Wang D, Li A, Chen G, Xiong H, Wei Y, Wu P, Xiao Z. Synthesis and structure studies of a new hexavanadate-glycine hybrid with high antitumor activities. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Zhao M, Chen X, Chi G, Shuai D, Wang L, Chen B, Li J. Research progress on the inhibition of enzymes by polyoxometalates. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00860e] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polyoxometalates (POMs) are a kind of inorganic cluster metal complex with various biological activities, such as anti-Alzheimer's disease, antibacterial, anti-cancer, anti-diabetes, anti-virus and so on.
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Affiliation(s)
- Meijuan Zhao
- College of Food and Biological Engineering
- Jimei University
- Xiamen
- P.R. China
| | - Xiangsong Chen
- College of Food and Biological Engineering
- Jimei University
- Xiamen
- P.R. China
| | - Guoxiang Chi
- College of Food and Biological Engineering
- Jimei University
- Xiamen
- P.R. China
| | - Die Shuai
- College of Food and Biological Engineering
- Jimei University
- Xiamen
- P.R. China
| | - Li Wang
- College of Food and Biological Engineering
- Jimei University
- Xiamen
- P.R. China
| | | | - Jian Li
- College of Food and Biological Engineering
- Jimei University
- Xiamen
- P.R. China
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Zolghadri S, Bahrami A, Hassan Khan MT, Munoz-Munoz J, Garcia-Molina F, Garcia-Canovas F, Saboury AA. A comprehensive review on tyrosinase inhibitors. J Enzyme Inhib Med Chem 2019; 34:279-309. [PMID: 30734608 PMCID: PMC6327992 DOI: 10.1080/14756366.2018.1545767] [Citation(s) in RCA: 525] [Impact Index Per Article: 105.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/04/2018] [Accepted: 11/05/2018] [Indexed: 12/17/2022] Open
Abstract
Tyrosinase is a multi-copper enzyme which is widely distributed in different organisms and plays an important role in the melanogenesis and enzymatic browning. Therefore, its inhibitors can be attractive in cosmetics and medicinal industries as depigmentation agents and also in food and agriculture industries as antibrowning compounds. For this purpose, many natural, semi-synthetic and synthetic inhibitors have been developed by different screening methods to date. This review has focused on the tyrosinase inhibitors discovered from all sources and biochemically characterised in the last four decades.
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Affiliation(s)
- Samaneh Zolghadri
- Department of Biology, Jahrom Branch, Islamic Azad University, Jahrom, Iran
| | - Asieh Bahrami
- Department of Biology, Jahrom Branch, Islamic Azad University, Jahrom, Iran
| | | | - J. Munoz-Munoz
- Group of Microbiology, Department of Applied Sciences, Northumbria University at Newcastle, Newcastle Upon Tyne, UK
| | - F. Garcia-Molina
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - F. Garcia-Canovas
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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Hu X, Wang H, Huang B, Li N, Hu K, Wu B, Xiao Z, Wei Y, Wu P. A new scheme for rational design and synthesis of polyoxovanadate hybrids with high antitumor activities. J Inorg Biochem 2019; 193:130-132. [DOI: 10.1016/j.jinorgbio.2019.01.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 01/26/2019] [Accepted: 01/26/2019] [Indexed: 01/04/2023]
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Keggin-type polyoxotungstates as mushroom tyrosinase inhibitors - A speciation study. Sci Rep 2019; 9:5183. [PMID: 30914775 PMCID: PMC6435698 DOI: 10.1038/s41598-019-41261-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 02/19/2019] [Indexed: 02/04/2023] Open
Abstract
Mushroom tyrosinase abPPO4 is a commercially relevant polyphenol oxidase and has been being targeted for numerous inhibition studies including polyoxometalates (POMs). In the present work, its diphenolase activity was inhibited at pH 6.8 by a series of structurally related polyoxotungstates (POTs) of the α-Keggin archetype, exhibiting the general formula [Xn+W12O40](8−n)− in order to elucidate charge-dependent activity correlations. Kinetic data were obtained from the dopachrome assay and 183W NMR was applied to obtain crucial insights into the actual Keggin POT speciation in solution, facilitating a straightforward assignment of inhibition effects to the identified POT species. While [PW12O40]3− was completely hydrolyzed to its moderately active lacunary form Hx[PW11O39](7−x)− (Ki = 25.6 mM), [SiW12O40]4− showed the most pronounced inhibition effects with a Ki of 4.7 mM despite of partial hydrolysis to its ineffective lacunary form Hx[SiW11O39](8−x)−. More negative Keggin cluster charges of 5− and 6− generally resulted in preclusion of inhibitory efficacy as well as hydrolysis, but with the Ni-substituted cluster [PW11O39{Ni(H2O)}]5− enzymatic inhibition was clearly restored (Ki = 9.7 mM). The inhibitory capacity of the structurally intact Keggin POTs was found to be inversely correlated to their net charge. The here applied speciation strategy is of utmost importance for any biological POM application to identify the actually active POM species.
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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: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [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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Wang X, Lin L, Yu X, Liu J, Lin H, Liu G. Two organic–inorganic hybrids constructed from metal/ttb segments and different polyoxometalates: Syntheses, structures and multifunctional catalytic properties. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.11.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Huang B, Wang N, Yang K, Ke D, Fang Y, Hu X, Wu B, Xiao Z, Wu P, Wei Y. Stepwise syntheses and supramolecular assemblies of a series of polyoxovanadate hybrids with various architectures. NEW J CHEM 2018. [DOI: 10.1039/c7nj04727d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Inorganic–organic hybrids with carbon chains of different lengths at the terminus of the organic ligands exhibit supramolecular-assemblies in different dimensions.
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Wang Z, Ren Y, Cao J, Tang L, Zhang M, Zhou S. Structural assembly from 1D to 3D motivated by the linear co-ligands, and the magnetic and photocatalytic properties of five Ni II coordination polymers with 5-(4′-carboxylphenyl)nicotinic acid. NEW J CHEM 2018. [DOI: 10.1039/c8nj02921k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five structural diversity nickel(ii) complexes based on 5-(4′-carboxylphenyl) nicotinic acid and linear co-ligands are described. The antiferromagnetic interactions exist in them expect for 2. All of them could accelerate the degradation rate of MO under visible light irradiation.
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Affiliation(s)
- Zhixiang Wang
- College of Chemistry and Chemical Engineering
- Shaanxi Key Laboratory of Chemical Reaction Engineering
- Affiliated Hospital
- Yan’an University
- Yan’an 716000
| | - Yixia Ren
- College of Chemistry and Chemical Engineering
- Shaanxi Key Laboratory of Chemical Reaction Engineering
- Affiliated Hospital
- Yan’an University
- Yan’an 716000
| | - Jia Cao
- College of Chemistry and Chemical Engineering
- Shaanxi Key Laboratory of Chemical Reaction Engineering
- Affiliated Hospital
- Yan’an University
- Yan’an 716000
| | - Long Tang
- College of Chemistry and Chemical Engineering
- Shaanxi Key Laboratory of Chemical Reaction Engineering
- Affiliated Hospital
- Yan’an University
- Yan’an 716000
| | - Meili Zhang
- College of Chemistry and Chemical Engineering
- Shaanxi Key Laboratory of Chemical Reaction Engineering
- Affiliated Hospital
- Yan’an University
- Yan’an 716000
| | - Shanhong Zhou
- College of Chemistry and Chemical Engineering
- Shaanxi Key Laboratory of Chemical Reaction Engineering
- Affiliated Hospital
- Yan’an University
- Yan’an 716000
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Berta L, Gâz A, Boda F, Curticapean A. Silver Cation Coordination Study to AsW9 Ligand – A Trilacunar Arsenotungstate Compound. ACTA MEDICA MARISIENSIS 2017. [DOI: 10.1515/amma-2017-0018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractObjective: The main objective of this research is to find the coordination ratio between AsW9and Ag+, as a preliminary study for synthesizing a new silver-arsenotungstate complex. Material and method: The ligand:cation molar ratio in complexes was determined by conductometric and potentiometric titrations of AsW9with silver salts: CH3COOAg, AgNO3. Results: The ratio was obtained from the inflexion points of the curves when molar ratio was plotted versus conductivity, or from the equivalence point when silver added volume was plotted versus pH value. Each graphic shows one point of inflexion corresponding to 1:1.54 ratio of AsW9:Ag+. In the same manner, the equivalent volumes determined by graphical method gave the ratio 1:1.53. The spectral results confirmed that a AsW9:Ag+complex was formed since the ligand absorption maxima values have been changed from 190 nm to 197 nm in the case of using AgNO3and 196 nm for CH3COOAg corresponding to the W=Odbond, and from 246.5 nm to 274 nm (AgNO3) and 270 nm (CH3COO-Ag+) for the W-Ob,c-W bond. Conclusions: Silver cation exhibit a preference for AsW9in a ratio of 3 to 2. This ratio can be associated to a sandwich type arrangement, with two trilacunary Keggin building blocks incorporating 3 metal cations in a tetrahedral geometry.
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Affiliation(s)
- Lavinia Berta
- University of Medicine and Pharmacy of Tîrgu Mureș, Tîrgu Mureș , Romania
| | - Andrei Gâz
- University of Medicine and Pharmacy of Tîrgu Mureș, Tîrgu Mureș , Romania
| | - Francisc Boda
- University of Medicine and Pharmacy of Tîrgu Mureș, Tîrgu Mureș , Romania
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