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Crmarić D, Bura-Nakić E. Interaction between Cu and Thiols of Biological and Environmental Importance: Case Study Using Combined Spectrophotometric/Bathocuproine Sulfonate Disodium Salt Hydrate (BCS) Assay. Molecules 2023; 28:5065. [PMID: 37446731 DOI: 10.3390/molecules28135065] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/15/2023] [Accepted: 06/20/2023] [Indexed: 07/15/2023] Open
Abstract
Considering the biological and ecological importance of Cu-thiol interactions and the discrepancies in previous research, this study focuses on Cu interactions with biologically and ecologically relevant thiols: glutathione (GSH), L-cysteine (L-cys), 3-mercaptopropionic acid (MPA), and thioacetic acid (TAA) in aqueous solution. The addition of Cu(II) to a thiol-containing solution led to a rapid reduction of Cu(II) and the formation of a Cu(I)-thiol complex. The mechanism of Cu(II) reduction and Cu(I) complex formation as well as the kinetics of Cu(I) oxidation strongly depend on the structural properties of the individual thiols investigated. The reducing power of the investigated thiols can be summarized as follows: L-cys ≅ GSH > MPA > TAA. The reaction order, with respect to Cu(I) oxidation, also changes over the time of the reaction course. The deviation of the reaction kinetics from the first order with respect to Cu(I) in the later stages of the reaction course can be attributed to a Fenton-like reaction occurring under low thiol concentration conditions. At high Cu:thiol ratios, in the case of GSH, L-cys, and MPA, the early stage of the reaction course is characterized by high Cu(I) stability, most likely as a result of Cu(I) complexation by the thiols present in excess in the reaction mixture.
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Affiliation(s)
- Dora Crmarić
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička Cesta 54, 10 000 Zagreb, Croatia
| | - Elvira Bura-Nakić
- Division for Marine and Environmental Research, Ruđer Bošković Institute, Bijenička Cesta 54, 10 000 Zagreb, Croatia
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Pourmorteza N, Jafarpour M, Feizpour F, Rezaeifard A. Cu(ii)–vitamin C-complex catalyzed photo-induced homocoupling reaction of aryl boronic acid in base-free and visible light conditions. RSC Adv 2022; 12:4931-4938. [PMID: 35425527 PMCID: PMC8981381 DOI: 10.1039/d1ra07252h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 02/02/2022] [Indexed: 11/21/2022] Open
Abstract
In this work, the photocatalytic efficiency of Cu(ii)–vitamin C complex immobilized on titanium dioxide nanoparticles was exploited in the photo-assisted homocoupling reaction of aryl boronic acids under heterogeneous conditions. The homocoupling reaction affords the corresponding symmetrical biaryls in 50–97% yields at ambient temperature in the air under visible light irradiation without any need for any additive such as base or oxidant. This method tolerates various substituents on the aryl boronic acids such as halogen, carbonyl, and a nitro group. The light-dependent photocatalytic performance of the title catalyst evaluated by action spectra revealed a maximum apparent quantum efficiency (AQYs) at 410 nm demonstrating the visible-light-driven photocatalytic reaction. The as-prepared nano biophotocatalyst proved to be reusable at least six times without losing its activity. Thus this work exhibits a favorable method from the environmental and economic point of view which enables the industrially important reactions such as coupling reactions, to be carried out efficiently under photocatalytic and practically attainable conditions. TiO2–ascorbic acid (AA)–Cu(ii), nanohybrid is active in the selective aerobic oxidative homocoupling of aryl boronic acids under heterogeneous conditions in air and visible light conditions.![]()
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Affiliation(s)
- Narges Pourmorteza
- Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand, Birjand, 97179-414, Iran
| | - Maasoumeh Jafarpour
- Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand, Birjand, 97179-414, Iran
| | - Fahimeh Feizpour
- Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand, Birjand, 97179-414, Iran
| | - Abdolreza Rezaeifard
- Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand, Birjand, 97179-414, Iran
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Zengin G, Mahomoodally MF, Sinan KI, Sadeer N, Maggi F, Caprioli G, Angeloni S, Mollica A, Stefanucci A, Ak G, Cakılcıoglu U, Polat R, Akan H. Evaluation of chemical constituents and biological properties of two endemic Verbascum species. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.06.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cardoso R, Valente R, Souza da Costa CH, da S. Gonçalves Vianez JL, Santana da Costa K, de Molfetta FA, Nahum Alves C. Analysis of Kojic Acid Derivatives as Competitive Inhibitors of Tyrosinase: A Molecular Modeling Approach. Molecules 2021; 26:2875. [PMID: 34066283 PMCID: PMC8152073 DOI: 10.3390/molecules26102875] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/10/2021] [Accepted: 03/11/2021] [Indexed: 12/15/2022] Open
Abstract
Tyrosinases belong to the functional copper-containing proteins family, and their structure contains two copper atoms, in the active site, which are coordinated by three histidine residues. The biosynthesis of melanin in melanocytes has two stages depending on the actions of the natural substrates L-DOPA and L-tyrosine. The dysregulation of tyrosinase is involved in skin cancer initiation. In the present study, using molecular modeling tools, we analyzed the inhibition activity of tyrosinase activity using kojic acid (KA) derivatives designed from aromatic aldehydes and malononitrile. All derivatives showed conformational affinity to the enzyme active site, and a favorable distance to chelate the copper ion, which is essential for enzyme function. Molecular dynamics simulations revealed that the derivatives formed promising complexes, presenting stable conformations with deviations between 0.2 and 0.35 Å. In addition, the investigated KA derivatives showed favorable binding free energies. The most stable KA derivatives showed the following binding free energies: -17.65 kcal mol-1 (D6), -18.07 kcal mol-1 (D2), -18.13 (D5) kcal mol-1, and -10.31 kcal mol-1 (D4). Our results suggest that these derivatives could be potent competitive inhibitors of the natural substrates of L-DOPA (-12.84 kcal mol-1) and L-tyrosine (-9.04 kcal mol-1) in melanogenesis.
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Affiliation(s)
- Richelly Cardoso
- Laboratório de Modelagem Molecular, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará–UFPA, Guamá, Belém-PA 66075-10, Brazil; (R.C.); (F.A.d.M.)
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará–UFPA, Guamá, Belém-PA 66075-10, Brazil;
| | - Renan Valente
- Laboratório de Sistemas Moleculares Complexos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará–UFPA, Guamá, Belém-PA 66075-10, Brazil;
| | - Clauber Henrique Souza da Costa
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará–UFPA, Guamá, Belém-PA 66075-10, Brazil;
| | | | - Kauê Santana da Costa
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará–UFPA, Guamá, Belém-PA 66075-10, Brazil;
- Universidade Federal do Oeste do Pará, Instituto de Biodiversidade, Santarém-PA 68035-110, Brazil
| | - Fábio Alberto de Molfetta
- Laboratório de Modelagem Molecular, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará–UFPA, Guamá, Belém-PA 66075-10, Brazil; (R.C.); (F.A.d.M.)
| | - Cláudio Nahum Alves
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará–UFPA, Guamá, Belém-PA 66075-10, Brazil;
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CMT-308, a Nonantimicrobial Chemically-Modified Tetracycline, Exhibits Anti-Melanogenic Activity by Suppression of Melanosome Export. Biomedicines 2020; 8:biomedicines8100411. [PMID: 33066033 PMCID: PMC7601524 DOI: 10.3390/biomedicines8100411] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 10/09/2020] [Accepted: 10/10/2020] [Indexed: 12/15/2022] Open
Abstract
CMT-308 is a nonantimicrobial chemically-modified tetracycline (CMT), which we have previously shown exhibits antifungal activity and pleiotropic anti-inflammatory activities, including inhibition of the enzymatic activity of matrix metalloproteinases (MMPs). Based on its chemical structure, we hypothesized that CMT-308 could inhibit melanogenesis and might be a candidate for the treatment of skin hyperpigmentation disorders which occur due to unregulated melanin biosynthesis and/or transport. CMT-308 was first studied for any effects on activity of the enzyme tyrosinase in vitro using a purified preparation of mushroom tyrosinase; the mode of inhibition of the soluble fungal enzyme was evaluated by Lineweaver-Burk and Dixon plots as well as by non-linear least squares fitting. Next, the effects of CMT-308 were tested in mammalian cell cultures using B16F10 mouse melanoma cells and further validated in darkly-pigmented human melanocytes (HEMn-DP). Our results showed that micromolar concentrations of CMT-308 inhibited mushroom tyrosinase enzyme activity, using the first two substrates in the melanogenesis pathway (l-tyrosine and l-3,4-dihydroxyphenylalanine (l-DOPA)); CMT-308 inhibited mushroom tyrosinase primarily via a mixed mode of inhibition, with the major contribution from a competitive mode. In B16F10 cell cultures, CMT-308 (10 µM) significantly diminished total melanin levels with a selective reduction of extracellular melanin levels, under both basal and hormone-stimulated conditions without any cytotoxicity over a duration of 72 h. Studies of potential mechanisms of inhibition of melanogenesis in B16F10 cells showed that, in mammalian cells, CMT-308 did not inhibit intracellular tyrosinase activity or the activity of α-glucosidase, an enzyme that regulates maturation of tyrosinase. However, CMT-308 suppressed MITF protein expression in B16F10 cells and showed copper chelating activity and antioxidant activity in a cell-free system. The significantly lower extracellular melanin levels obtained at 10 µM indicate that CMT-308’s anti-melanogenic action may be attributed to a selective inhibition of melanosome export with the perinuclear aggregation of melanosomes, rather than a direct effect on the tyrosinase-catalyzed steps in melanin biosynthesis. These results were validated in HEMn-DP cells where CMT-308 suppressed dendricity in a fully reversible manner without affecting intracellular melanin synthesis. Furthermore, the capacity of CMT-308 to inhibit melanosome export was retained in cocultures of HEMn-DP and HaCaT. In summary, our results offer promise for therapeutic strategies to combat the effects of hyperpigmentation by use of CMT-308 at low micromolar concentrations.
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Pourmorteza N, Jafarpour M, Feizpour F, Rezaeifard A. Cu(ii) vitamin C tunes photocatalytic activity of TiO 2 nanoparticles for visible light-driven aerobic oxidation of benzylic alcohols. RSC Adv 2020; 10:12053-12059. [PMID: 35496605 PMCID: PMC9050754 DOI: 10.1039/d0ra00075b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 03/15/2020] [Indexed: 12/13/2022] Open
Abstract
The incorporation of Cu(OAc)2 into ascorbic acid coated TiO2 nanoparticles easily provided a new heterogeneous visible-light active titania-based photocatalyst (TiO2-AA-Cu(ii)) which was characterized by different techniques such as FT-IR, XPS, ICP-AES, TGA and TEM. A red-shift of the band-edge and a reduction of the band-gap (2.8 eV vs. 3.08 for TiO2) were demonstrated by UV-DRS and Tauc plots. The combination of the as-prepared TiO2-AA-Cu(ii) nanoparticles with TEMPO and molecular oxygen (air) afforded an active catalytic system for the selective oxidation of diverse set of benzylic alcohols under solvent-free conditions. A photoassisted pathway was confirmed for oxidation reactions evidenced by good correlation between apparent quantum yield (AQY) and diffuse reflectance spectra (DRS) of the as-prepared nanohybrid. The spectral data and recycling experiments demonstrated the structural stability of the title copper photocatalyst during oxidation reactions.
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Affiliation(s)
- Narges Pourmorteza
- Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand Birjand 97179-414 Iran +98 5632202515 +98 5632202516
| | - Maasoumeh Jafarpour
- Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand Birjand 97179-414 Iran +98 5632202515 +98 5632202516
| | - Fahimeh Feizpour
- Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand Birjand 97179-414 Iran +98 5632202515 +98 5632202516
| | - Abdolreza Rezaeifard
- Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand Birjand 97179-414 Iran +98 5632202515 +98 5632202516
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Toward the inhibitory effect of acetylsalicylic acid on tyrosinase: Integrating kinetics studies and computational simulations. Process Biochem 2013. [DOI: 10.1016/j.procbio.2012.12.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Pei CJ, Lee J, Si YX, Oh S, Xu WA, Yin SJ, Qian GY, Han HY. Inhibition of tyrosinase by gastrodin: An integrated kinetic-computational simulation analysis. Process Biochem 2013. [DOI: 10.1016/j.procbio.2012.11.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Alijanianzadeh M, Saboury AA, Ganjali MR, Hadi-Alijanvand H, Moosavi-Movahedi AA. Inhibition of mushroom tyrosinase by a newly synthesized ligand: inhibition kinetics and computational simulations. J Biomol Struct Dyn 2012; 30:448-59. [PMID: 22686596 DOI: 10.1080/07391102.2012.682210] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Alterations in the synthesis of melanin contribute to a number of diseases; therefore, the design of new tyrosinase inhibitors is very important. Mushroom tyrosinase (MT) is a metalloenzyme, which plays an important role in melanin biosynthesis. In this study, the inhibitory effect of a novel designed compound, i.e. 2-((1Z)-(2-(2,4-dinitrophenyl)hydrazin-1-ylidene)methyl)phenol, as a specific ligand which can bind to the copper ion of MT, has been assessed. The ligand was found to competitively inhibit both the cresolase and catecholase activities of MT, with small inhibition constants of 2.8 and 2.6 μM, respectively. Intrinsic fluorescence studies were performed to gain more information on the binding constants. Docking results indicated that the ligand binds to copper ions in the active site of MT via the OH group of the ligand. The ligand makes four hydrogen bonds with aspartic acid and one hydrogen bond with the histidine residue in the active site. Molecular dynamics results show that ligand binds to the MT via both electrostatic and hydrophobic interactions with its different parts.
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Hu WJ, Yan L, Park D, Jeong HO, Chung HY, Yang JM, Ye ZM, Qian GY. Kinetic, structural and molecular docking studies on the inhibition of tyrosinase induced by arabinose. Int J Biol Macromol 2012; 50:694-700. [DOI: 10.1016/j.ijbiomac.2011.12.035] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 11/26/2011] [Accepted: 12/29/2011] [Indexed: 01/11/2023]
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Si YX, Yin SJ, Oh S, Wang ZJ, Ye S, Yan L, Yang JM, Park YD, Lee J, Qian GY. An Integrated Study of Tyrosinase Inhibition by Rutin: Progress using a Computational Simulation. J Biomol Struct Dyn 2012; 29:999-1012. [DOI: 10.1080/073911012010525028] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Encarnacion AB, Fagutao F, Jintasataporn O, Worawattanamateekul W, Hirono I, Ohshima T. Application of ergothioneine-rich extract from an edible mushroom Flammulina velutipes for melanosis prevention in shrimp, Penaeus monodon and Litopenaeus vannamei. Food Res Int 2012. [DOI: 10.1016/j.foodres.2011.10.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Effects of Isorhamnetin on Tyrosinase: Inhibition Kinetics and Computational Simulation. Biosci Biotechnol Biochem 2012; 76:1091-7. [DOI: 10.1271/bbb.110910] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Yin SJ, Si YX, Wang ZJ, Wang SF, Oh S, Lee S, Sim SM, Yang JM, Qian GY, Lee J, Park YD. The Effect of Thiobarbituric Acid on Tyrosinase: Inhibition Kinetics and Computational Simulation. J Biomol Struct Dyn 2011; 29:463-70. [DOI: 10.1080/07391102.2011.10507398] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Encarnacion AB, Fagutao F, Shozen KI, Hirono I, Ohshima T. Biochemical intervention of ergothioneine-rich edible mushroom (Flammulina velutipes) extract inhibits melanosis in crab (Chionoecetes japonicus). Food Chem 2011. [DOI: 10.1016/j.foodchem.2011.02.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Yin SJ, Si YX, Qian GY. Inhibitory effect of phthalic Acid on tyrosinase: the mixed-type inhibition and docking simulations. Enzyme Res 2011; 2011:294724. [PMID: 21637327 PMCID: PMC3102342 DOI: 10.4061/2011/294724] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Accepted: 03/23/2011] [Indexed: 11/25/2022] Open
Abstract
Tyrosinase inhibition studies are needed due to the medicinal applications such as hyperpigmentation. For probing effective inhibitors of tyrosinase, a combination of computational prediction and enzymatic assay via kinetics was important. We predicted the 3D structure of tyrosinase, used a docking algorithm to simulate binding between tyrosinase and phthalic acid (PA), and studied the reversible inhibition of tyrosinase by PA. PA inhibited tyrosinase in a mixed-type manner with a Ki = 65.84 ± 1.10 mM. Measurements of intrinsic and ANS-binding fluorescences showed that PA induced changes in the active site structure via indirect binding. Simulation was successful (binding energies for Dock6.3 = −27.22 and AutoDock4.2 = −0.97 kcal/mol), suggesting that PA interacts with LEU73 residue that is predicted commonly by both programs. The present study suggested that the strategy of predicting tyrosinase inhibition based on hydroxyl groups and orientation may prove useful for screening of potential tyrosinase inhibitors.
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Affiliation(s)
- Shang-Jun Yin
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
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Mixed-Type Inhibition of Tyrosinase from Agaricus bisporus by Terephthalic Acid: Computational Simulations and Kinetics. Protein J 2011; 30:273-80. [DOI: 10.1007/s10930-011-9329-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Si YX, Yin SJ, Park D, Chung HY, Yan L, Lü ZR, Zhou HM, Yang JM, Qian GY, Park YD. Tyrosinase inhibition by isophthalic acid: Kinetics and computational simulation. Int J Biol Macromol 2011; 48:700-4. [DOI: 10.1016/j.ijbiomac.2011.02.015] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Revised: 02/22/2011] [Accepted: 02/22/2011] [Indexed: 01/31/2023]
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Encarnacion AB, Fagutao F, Hirayama J, Terayama M, Hirono I, Ohshima T. Edible mushroom (Flammulina velutipes) extract inhibits melanosis in Kuruma shrimp (Marsupenaeus japonicus). J Food Sci 2010; 76:C52-8. [PMID: 21535653 DOI: 10.1111/j.1750-3841.2010.01890.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study compared the potential of an aqueous extract of an edible mushroom (Flammulina velutipes) to prevent melanosis in cultured Kuruma shrimp (Marsupenaeus japonicus) with other antimelanosic compounds in vivo. The mushroom extract contained 9.1 mg/mL ergothioneine (ESH). Immersion of live full-grown shrimp in a 0.5% w/v solution of mushroom extract significantly reduced PPO activity in shrimp hemolymph. In addition, expression of the prophenoloxidase (proPO) gene decreased in hemocytes, suggesting that the extract blocked the activation of the proPO cascade. Consequently, the development of melanosis in the treated shrimp was significantly suppressed during ice storage. Treatment with a 0.05% w/v solution of sodium ascorbate and 4-hexyl-1,3-benzenediol had the same effect. In vitro experiments showed that ESH effectively inhibited PPO activity and activation of the proPO cascade in hemocyte lysate supernatant. This study suggests that in vivo application of F. velutipes mushroom extract is an effective natural alternative to synthetic antimelanosic agents to inhibit postmortem melanosis in shrimp. Practical Application: The extract of an edible mushroom (F. velutipes) containing ergothioneine can be a promising natural alternative to synthetic antimelanosic agents used to prevent postharvest melanosis in shrimp and other crustaceans. Furthermore, utilization of the mushroom trimmings could also help address the growing concerns on the disposal of such agricultural wastes and instead use it into a novel purpose as a source of antimelanosic and antioxidants for food and industrial application.
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Affiliation(s)
- Angel B Encarnacion
- Dept. of Food Science and Technology, Tokyo Univ. of Marine Science and Technology, Konan-4, Minato-ku, Tokyo 108-8477, Japan
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Lü ZR, Seo E, Yan L, Yin SJ, Si YX, Qian GY, Park YD, Yang JM. High-Throughput Integrated Analyses for the Tyrosinase-Induced Melanogenesis: Microarray, Proteomics and Interactomics Studies. J Biomol Struct Dyn 2010; 28:259-76. [DOI: 10.1080/07391102.2010.10507358] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Encarnacion AB, Fagutao F, Hirono I, Ushio H, Ohshima T. Effects of ergothioneine from mushrooms (Flammulina velutipes) on melanosis and lipid oxidation of kuruma shrimp (Marsupenaeus japonicus). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:2577-2585. [PMID: 20078077 DOI: 10.1021/jf903944y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The antimelanosic and antioxidative properties of a hot water extract prepared from the fruiting body of the edible mushroom (Flammulina velutipes) were evaluated by dietary supplementation in Kuruma shrimp (Marsupenaeus japonicus) for possible aquaculture application. The extract contained ergothioneine (ERT) at a level of 2.05 mg/mL. A commercial standard of l-ergothioneine (l-ERT) and the mushroom extract showed inhibitory activity against mushroom polyphenoloxidase (PPO). Feeding of the extract had no adverse effects on the immune systems of the shrimp under the present experimental conditions. Supplementation of the extract in the diet significantly suppressed PPO activities in the hemolymphs of the shrimp. Expression of the prophenoloxidase (proPO) gene decreased in the hemocyte of the Kuruma shrimp fed with the mushroom extract. Consequently, development of melanosis was significantly suppressed in the supplement fed shrimp during ice storage. Lipid oxidation was also effectively controlled in the supplement fed group throughout the storage period. In vitro experiments showed that l-ERT effectively inhibited the activation of proPO in the hemocyte lysate supernatant (HLS). The transcript of the proPO gene in the hemocyte showed lower expression in the l-ERT-treated HLS. It was concluded that dietary supplementation of the mushroom extract in shrimp could be a promising approach to control post mortem development of melanosis and lipid oxidation in shrimp muscles.
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Affiliation(s)
- Angel B Encarnacion
- Department of Food Science and Technology, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Konan-4, Minato-ku, Tokyo 108-8477, Japan
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Santa-María C, Revilla E, Miramontes E, Bautista J, García-Martínez A, Romero E, Carballo M, Parrado J. Protection against free radicals (UVB irradiation) of a water-soluble enzymatic extract from rice bran. Study using human keratinocyte monolayer and reconstructed human epidermis. Food Chem Toxicol 2010; 48:83-8. [DOI: 10.1016/j.fct.2009.09.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Revised: 08/12/2009] [Accepted: 09/15/2009] [Indexed: 11/15/2022]
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Cho IH, Lü ZR, Yu JR, Park YD, Yang JM, Hahn MJ, Zou F. Towards Profiling the Gene Expression of Tyrosinase-induced Melanogenesis in HEK293 Cells: a Functional DNA Chip Microarray and Interactomics Studies. J Biomol Struct Dyn 2009; 27:331-46. [DOI: 10.1080/07391102.2009.10507320] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Gormally MV, McKibben RK, Johal MS, Selassie CRD. Controlling tyrosinase activity on charged polyelectrolyte surfaces: a QCM-D analysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:10014-10019. [PMID: 19505131 DOI: 10.1021/la900751w] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The quartz crystal microbalance (QCM) was used to monitor the immobilization of tyrosinase on polycationic and polyanionic precursor assemblies in situ and in real-time. The resulting enzymatic surfaces were then exposed to various flavonoids, and the degree of binding was measured using QCM. We show that enzyme activity is retained when immobilized on polycationic films (flavonoid binding observed), while the active site is blocked when assembled on a polyanionic film (no flavonoid binding to the enzyme). We rationalize these observations by considering a combination of interlayer interpenetration and strong electrostatic interactions between the polyelectrolyte and tyrosinase's dicopper 2(+) center. Ion-pair formation between anionic moieties of the polyanion and the metal-coordinated active site is suggested as the dominant mechanism leading to the deactivation of tyrosinase. We are currently working to expand this research to achieve a more general theory of how various metal-coordinated enzymes react with polyelectrolyte surfaces of varying structural morphology, charge density, and chemical composition.
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Affiliation(s)
- Michael V Gormally
- Department of Chemistry, Pomona College, 645 North College Avenue, Claremont, California 91711, USA
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The Effect of Trifluoroethanol on Tyrosinase Activity and Conformation: Inhibition Kinetics and Computational Simulations. Appl Biochem Biotechnol 2009; 160:1896-908. [DOI: 10.1007/s12010-009-8730-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2008] [Accepted: 07/26/2009] [Indexed: 10/20/2022]
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Han HY, Lee JR, Xu WA, Hahn MJ, Yang JM, Park YD. Effect of Cl- on tyrosinase: complex inhibition kinetics and biochemical implication. J Biomol Struct Dyn 2007; 25:165-71. [PMID: 17718595 DOI: 10.1080/07391102.2007.10507165] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Tyrosinase plays a core role in melanogenesis of the various organisms. Therefore, the regulation of the tyrosinase activity is directly related with melanin synthesis. In this study, we investigated the Cl(-)-induced inhibition of human tyrosinase and the potent role of Cl(-) as a negative regulator in melanogenesis. For the inhibition kinetic studies, human tyrosinase was differently prepared from the TXM13 melanotic cells as well as from cells that had undergone gene transfection. We found that Cl(-) inhibited tyrosinase in a slope-parabolic competitive manner and tyrosinase gene transfection into HEK293 cell significantly down-regulated the expression levels of solute carrier family 12, member 4 (potassium/chloride transporters, SLC12A7) and solute carrier family 12, member 7 (potassium/chloride transporters, SLC12A7), which are known to be Cl(-) transporters. From the results of the inhibition kinetic studies and the Cl(-) transporter expression level, we suggested that Cl(-) might act as a potent regulatory factor in melanogenesis. It is worth notice that a high content of Cl(-) exists physiologically and tyrosinase reacts sensitively to Cl- in a complex interaction manner.
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Affiliation(s)
- Hon-Yan Han
- Department of Biology, College of Life Sciences, Soochow University, Suzhou 215123, PR China
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