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Wang M, Chen R, Wang S, Cui J, Lian D, Li L. Comparative Study of Binding Behaviors of Cyanidin, Cyanidin-3-Galactoside, Peonidin with Tyrosinase. J Fluoresc 2024; 34:1747-1760. [PMID: 37603228 DOI: 10.1007/s10895-023-03384-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 08/06/2023] [Indexed: 08/22/2023]
Abstract
Cyanidin, peonidin and cyanidin-3-galactoside are the common anthocyanins with a variety of biological activities. Tyrosinase is a speed-limiting enzyme associated with melanin production. The inhibition of tyrosinase activity can prevent melanin disease while contributing to whitening. The interaction behaviors of the three anthocyanins against tyrosinase have been discussed in this paper. Cyanidin has strongest inhibitory effect on tyrosinase, and then peonidin, cyanidin-3-galactoside. Furthermore, the inhibition of tyrosinase by the three anthocyanins is mixed modes. The three anthocyanins can induce the static fluorescence quenching of tyrosinase. Cyanidin exhibits strongest binding affinity on tyrosinase, and then peonidin, cyanidin-3-galactoside based on Ka values obtain by fluorescence analysis. The binding of all anthocyanin to tyrosinase induce its conformation changes. According to molecular docking and fluorescence studies, they bind to tyrosinase by hydrogen bond and van der Waals force. In addition, the optimal modes of the three anthocyanins with tyrosinase are predicated by molecular docking. This work emphasizes that cyanidin, peonidin and cyanidin-3-galactoside may be potential drugs for the treatment of diseases caused by melanin.
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Affiliation(s)
- Meizi Wang
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Rongda Chen
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China
- Zhaoqing Xuanqing Middle School, Zhaoqing, China
| | - Suqing Wang
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Jingjing Cui
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Di Lian
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China
| | - Li Li
- The College of Chemistry, Changchun Normal University, Changchun, 130032, China.
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2
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Liang F. Inhibition mechanism investigation of quercetagetin as a potential tyrosinase inhibitor. Front Chem 2024; 12:1411801. [PMID: 38894729 PMCID: PMC11184945 DOI: 10.3389/fchem.2024.1411801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 05/16/2024] [Indexed: 06/21/2024] Open
Abstract
Tyrosinase is one important rate limiting enzyme in melanin synthesis, directly affecting the melanin synthesis. Quercetagetin is one active ingredient from marigold. Thence, the inhibition effects of quercetagetin against tyrosinase were investigated. The results showed quercetagetin could inhibit tyrosinase activity with IC50 value of 0.19 ± 0.01 mM and the inhibition type was a reversible mixed-type. Results of fluorescence quenching showed quercetagetin could quench tyrosinase fluorescence in static process. CD and 3D fluorescence results showed the interaction of quercetagetin to tyrosinase could change tyrosinase conformation to inhibit activity. Moreover, docking revealed details of quercetagetin's interactions with tyrosinase.
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Affiliation(s)
- Faliang Liang
- Pharmacy Department, Jiang Men Maternity and Child Healthcare Hospital, Jiangmen, China
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3
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Wang M, Wang S, Cui J, Lian D, Li Y, Du Y, Li L. Interactions studies of CYP2D6 with quercetin and hyperoside by spectral analysis and molecular dynamics simulations. LUMINESCENCE 2024; 39:e4605. [PMID: 37795938 DOI: 10.1002/bio.4605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/12/2023] [Accepted: 10/01/2023] [Indexed: 10/06/2023]
Abstract
Some ingredients from herbal medicine can significantly affect the activity of CYP2D6, thus leading to serious interactions between herbs and drugs. Quercetin and hyperoside are active ingredients widely found in vegetables, fruits, and herbal medicines. Quercetin and hyperoside have many biological activities. In this work, the characteristic bindings of CYP2D6 with quercetin/hyperoside are revealed by multi-spectroscopy analysis, molecular docking, and molecular dynamics simulations. The fluorescence of CYP2D6 is statically quenched by quercetin and hyperoside. The binding constant (Ka ) values of CYP2D6-quercetin/hyperoside range from 104 L mol-1 , which indicates that these two flavonoids bind moderately to CYP2D6. Meanwhile, quercetin has a stronger quenching ability to CYP2D6 than that of hyperoside. The secondary structure of CYP2D6 is obviously changed by binding with quercetin/hyperoside. The docking results reveal that the quercetin/hyperoside enters the active site of CYP2D6 near heme and binds to CYP2D6 by hydrogen bonds and van der Waals forces. The molecular dynamics simulation results indicate that the binding of quercetin/hyperoside can stabilize the two complexes, enhance the flexibility of CYP2D6 backbone atoms, and make a more unfolded and looser structure of CYP2D6.
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Affiliation(s)
- Meizi Wang
- The College of Chemistry, Changchun Normal University, Changchun, China
| | - Suqing Wang
- The College of Chemistry, Changchun Normal University, Changchun, China
| | - Jingjing Cui
- The College of Chemistry, Changchun Normal University, Changchun, China
| | - Di Lian
- The College of Chemistry, Changchun Normal University, Changchun, China
| | - Yuan Li
- The College of Chemistry, Changchun Normal University, Changchun, China
| | - Yutong Du
- The College of Chemistry, Changchun Normal University, Changchun, China
| | - Li Li
- The College of Chemistry, Changchun Normal University, Changchun, China
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4
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Min X, Lu L, Xu X, Wen Y, Zheng X. Investigation on the inhibition mechanism and binding behavior of paeonol to tyrosinase and its anti-browning property by multi-spectroscopic and molecular docking methods. Int J Biol Macromol 2023; 253:126962. [PMID: 37722636 DOI: 10.1016/j.ijbiomac.2023.126962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/12/2023] [Accepted: 09/15/2023] [Indexed: 09/20/2023]
Abstract
Paeonol, as one effective tyrosinase inhibitor, had been used as food preservative and clinical medication for skin disorders. In this study, the inhibition mechanism and binding behavior of paeonol to tyrosinase and its anti-browning property were investigated using multi-spectroscopic and molecular docking methods. Activity assay and kinetic results confirmed paeonol as a reversible mixed-type tyrosinase inhibitor. Results of the mechanistic studies were clarified using fluorescence quenching, synchronous fluorescence, CD spectra and 3D fluorescence, and showed that the binding of paeonol to tyrosinase might change the chromophore microenvironment and conformation of tyrosinase to inhibit enzyme catalytic activity. Molecular docking results revealed the detailed binding between paeonol and tyrosinase. Moreover, paeonol could prevent the browning of fresh-cut apples, as well as inhibiting PPO and POD activities and increasing APX activity. All above findings established a reliable basis for the inhibitory mechanism of paeonol against tyrosinase and therefore contributed to its application in anti-browning.
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Affiliation(s)
- Xiaofeng Min
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Li Lu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Xuetao Xu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
| | - Yi Wen
- Department of Pharmacy, Zhongshan City People's Hospital, Zhongshan 825403, China.
| | - Xi Zheng
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China.
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Liu HM, Tang W, Wang XY, Jiang JJ, Zhang Y, Liu QL, Wang W. Experimental and theoretical studies on inhibition against tyrosinase activity and melanin biosynthesis by antioxidant ergothioneine. Biochem Biophys Res Commun 2023; 682:163-173. [PMID: 37816300 DOI: 10.1016/j.bbrc.2023.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/22/2023] [Accepted: 10/01/2023] [Indexed: 10/12/2023]
Abstract
Ergothioneine, a natural derivative of histidine with a thiol/thine tautomeric structure, exhibits exceptional antioxidant properties and inhibition activities on tyrosinase. In this study, enzyme kinetics experiments and chromatographic spectral analysis revealed that ergothioneine inhibited tyrosinase in a reversible and non-competitive manner, with an inhibition constant of 0.554 mg/mL (2.41 mM). As the concentration of ergothioneine increased, the extremely flexible loop structure of tyrosinase extended from 40.1 % to 41.0 %, effectively covering the active center or binding site. Theoretical molecular docking simulation results show that ergothioneine forms complexes with tyrosinase through hydrogen bonding and salt bridges in the active center of Cu ions. Additionally, it was observed that ergothioneine's antioxidant had a stronger reducing impact on dopaquinone, an intermediate in melanin production, than the effect of ascorbic acid at an equivalent concentration (0.5 mg/mL). Ergothioneine reduced the intracellular reactive oxygen species to lower levels than the control group without UVA radiation and regulated the proliferation and differentiation in B16-F10 melanocytes. Clinical trials have shown that a 0.1 % concentration of ergothioneine can effectively suppress melanin production in irradiated skin. The significant reduction in melanin index and an increase in the individual type angle (ITA°) degree were measured after 4 weeks. These results collectively suggest that ergothioneine may be a promising inhibitor of natural antioxidant tyrosinase. Furthermore, due to its safety and efficacy, ergothioneine could be considered one of the bioactive substances for further study on diseases related to melanin production and tyrosinase activity which is of great significance for the cosmetics, medicine and food industries.
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Affiliation(s)
- Hui-Min Liu
- School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology, Shanghai, 201418, China; Engineering Research Center of Perfume & Aroma and Cosmetics, Ministry of Education, Shanghai, 201418, China
| | - Wei Tang
- School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Xiao-Yi Wang
- School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Jing-Jing Jiang
- School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Yun Zhang
- School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Qing-Lei Liu
- School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology, Shanghai, 201418, China; Engineering Research Center of Perfume & Aroma and Cosmetics, Ministry of Education, Shanghai, 201418, China
| | - Wei Wang
- School of Perfume & Aroma and Cosmetics, Shanghai Institute of Technology, Shanghai, 201418, China; Engineering Research Center of Perfume & Aroma and Cosmetics, Ministry of Education, Shanghai, 201418, China.
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6
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Hong X, Song X, Wu X, Yang C, Gong D, Zhang G. Treatments of heating and ultrasound improve the inhibition of gallocatechin gallate on tyrosinase. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:3896-3906. [PMID: 36321508 DOI: 10.1002/jsfa.12307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 10/26/2022] [Accepted: 11/02/2022] [Indexed: 05/03/2023]
Abstract
BACKGROUND Gallocatechin gallate (GCG), a catechin of tea polyphenols, possesses inhibitory ability against tyrosinase, but few studies have reported how common processing methods affect it. In this research, the influence of heating and ultrasound treatments on the inhibition of GCG against tyrosinase was explored by ultraviolet-visible absorption, fluorescence spectroscopy, high-performance liquid chromatography and liquid chromatography-tandem mass spectrometry. RESULTS Both heating and ultrasound treatments of GCG alone improved GCG's inhibitory ability against tyrosinase compared with the untreated, and a combination of heating and ultrasound treatment (100 °C, 20 min + 630 W, 20 min) further decreased the relative tyrosinase activity to 26.8%. The treated GCG exhibited a stronger fluorescence quenching effect on tyrosinase, but did not have any influence on the static quenching mechanism. Compared to the untreated GCG, the binding constants of treated GCG by heating, ultrasound and their combination with tyrosinase significantly increased, but the number of binding sites was still approximately one and the main driving force of the treated GCG was still hydrophobic interaction. After treatments of heating, ultrasound and their combination, the composition of GCG solutions was changed. CONCLUSION The enhanced inhibition of treated GCG on tyrosinase may be due to partial conversion of GCG into epigallocatechin-3-gallate (EGCG) and gallic acid (GA), which may cooperate with GCG to better inhibit the enzyme activity. This study has provided some valuable information for the application of catechins against tyrosinase in food processing and cosmetic industry. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Xinyue Hong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Xin Song
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Xiaqing Wu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
- Faculty of Life Science and Medicine, Northwest University, Xi'an, China
| | - Change Yang
- Faculty of Life Science and Medicine, Northwest University, Xi'an, China
| | - Deming Gong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
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Song J, Chen M, Meng F, Chen J, Wang Z, Zhang Y, Cui J, Wang J, Shi D. Studies on the interaction mechanism between xanthine oxidase and osmundacetone: Molecular docking, multi-spectroscopy and dynamical simulation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 299:122861. [PMID: 37209475 DOI: 10.1016/j.saa.2023.122861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/01/2023] [Accepted: 05/10/2023] [Indexed: 05/22/2023]
Abstract
Xanthine oxidase (XO) is a key enzyme in uric acid production, and its molybdopterin (Mo-Pt) domain is an important catalytic center when xanthine and hypoxanthine are oxidated. It is found that the extract of Inonotus obliquus has an inhibitory effect on XO. In this study, five key chemical compounds were initially identified using liquid chromatography-mass spectrometry (LC-MS), and two compounds, osmundacetone ((3E)-4-(3,4-dihydroxyphenyl)-3-buten-2-one) and protocatechuic aldehyde (3,4-dihydroxybenzaldehyde), were screened as the XO inhibitors by ultrafiltration technology. Osmundacetone bound XO strongly and competitively inhibited XO with a half-maximal inhibitory concentration of 129.08 ± 1.71 μM, and its inhibition mechanism, was investigated. Osmundacetone and XO via static quenching and spontaneously bound with XO with high affinity, primarily via hydrophobic interactions and hydrogen bonds. Molecular docking studies showed that osmundacetone was inserted into the Mo-Pt center and interacted with hydrophobic residues of Phe911, Gly913, Phe914, Ser1008, Phe1009, Thr1010, Val1011, and Ala1079 of XO. In summary, these findings suggest that provide theoretical basis for the research and development of XO inhibitors from Inonotus obliquus.
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Affiliation(s)
- Jiling Song
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Minghui Chen
- The College of Life Science, Changchun Normal University, Changchun 130032, China
| | - Fanlei Meng
- Institute of Agricultural Quality Standard and Testing Technology, Jilin Academy of Agricultural Sciences, Changchun 130033, China
| | - Jiahui Chen
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Zhanwei Wang
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Yong Zhang
- The College of Chemistry, Changchun Normal University, Changchun 130032, China; Nanguan Middle School, Honghua Gang District, Zunyi 563000, China
| | - Jing Cui
- The College of Life Science, Changchun Normal University, Changchun 130032, China; Institute of Science and Technology Innovation, Changchun Normal University, Changchun 130032, China
| | - Jing Wang
- The College of Chemistry, Changchun Normal University, Changchun 130032, China; The College of Life Science, Changchun Normal University, Changchun 130032, China; Institute of Science and Technology Innovation, Changchun Normal University, Changchun 130032, China.
| | - Dongfang Shi
- The College of Life Science, Changchun Normal University, Changchun 130032, China; Institute of Science and Technology Innovation, Changchun Normal University, Changchun 130032, China
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8
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Taniguchi M, LaRocca CA, Bernat JD, Lindsey JS. Digital Database of Absorption Spectra of Diverse Flavonoids Enables Structural Comparisons and Quantitative Evaluations. JOURNAL OF NATURAL PRODUCTS 2023; 86:1087-1119. [PMID: 36848595 DOI: 10.1021/acs.jnatprod.2c00720] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Flavonoids play diverse roles in plants, comprise a non-negligible fraction of net primary photosynthetic production, and impart beneficial effects in human health from a plant-based diet. Absorption spectroscopy is an essential tool for quantitation of flavonoids isolated from complex plant extracts. The absorption spectra of flavonoids typically consist of two major bands, band I (300-380 nm) and band II (240-295 nm), where the former engenders a yellow color; in some flavonoids the absorption tails to 400-450 nm. The absorption spectra of 177 flavonoids and analogues of natural or synthetic origin have been assembled, including molar absorption coefficients (109 from the literature, 68 measured here). The spectral data are in digital form and can be viewed and accessed at http://www.photochemcad.com. The database enables comparison of the absorption spectral features of 12 distinct types of flavonoids including flavan-3-ols (e.g., catechin, epigallocatechin), flavanones (e.g., hesperidin, naringin), 3-hydroxyflavanones (e.g., taxifolin, silybin), isoflavones (e.g., daidzein, genistein), flavones (e.g., diosmin, luteolin), and flavonols (e.g., fisetin, myricetin). The structural features that give rise to shifts in wavelength and intensity are delineated. The availability of digital absorption spectra for diverse flavonoids facilitates analysis and quantitation of these valuable plant secondary metabolites. Four examples are provided of calculations─multicomponent analysis, solar ultraviolet photoprotection, sun protection factor (SPF), and Förster resonance energy transfer (FRET)─for which the spectra and accompanying molar absorption coefficients are sine qua non.
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Affiliation(s)
- Masahiko Taniguchi
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Connor A LaRocca
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jake D Bernat
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jonathan S Lindsey
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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Peng Z, Wang G, Wang JJ, Zhao Y. Anti-browning and antibacterial dual functions of novel hydroxypyranone-thiosemicarbazone derivatives as shrimp preservative agents: Synthesis, bio-evaluation, mechanism, and application. Food Chem 2023; 419:136106. [PMID: 37030204 DOI: 10.1016/j.foodchem.2023.136106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 03/21/2023] [Accepted: 04/02/2023] [Indexed: 04/10/2023]
Abstract
To develop new shrimp preservative agents with dual functions of anti-browning and antibacterial, thirteen hydroxypyranone-thiosemicarbazone derivatives were prepared according to molecular hybridization. Thereinto, compound 7j (IC50 = 1.99 ± 0.19 μM) shown the strongest anti-tyrosinase activity and was about twenty-three folds stronger than kojic acid (45.73 ± 4.03 μM). The anti-tyrosinase mechanism of 7j was illustrated through enzyme kinetic, copper ion chelating ability, fluorescence quenching, ultraviolet spectrum, AFM analysis, and molecular docking study. On the other hand, antibacterial assay and time-kill kinetics analysis confirmed that 7j also had good antibacterial activity against V. parahaemolyticus (MIC = 0.13 mM). PI uptake test, SDS-PAGE, and fluorescence spectrometry analysis proved that 7j can affect the bacterial cell membrane. Finally, the shrimp preservation and safety study indicated that 7j has dual effects of inhibiting bacterial growth and preventing enzyme browning, and can be applied to the preservation of fresh shrimp.
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Affiliation(s)
- Zhiyun Peng
- Clinical Trails Center, The Affiliated Hospital of Guizhou Medical University, Guiyang 55004, China; College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Guangcheng Wang
- Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang 550004, China
| | - Jing Jing Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China
| | - Yong Zhao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
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Song J, Wang Z, Chi Y, Zhang Y, Fang C, Shu Y, Cui J, Bai H, Wang J. Anti-gout activity and the interaction mechanisms between Sanghuangporus vaninii active components and xanthine oxidase. Bioorg Chem 2023; 133:106394. [PMID: 36801789 DOI: 10.1016/j.bioorg.2023.106394] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 02/13/2023]
Abstract
Xanthine oxidase (XO) plays a critical role in the progression of gout. We showed in a previous study that Sanghuangporus vaninii (S. vaninii), a perennial, medicinal, and edible fungus traditionally used to treat various symptoms, contains XO inhibitors. In the current study, we isolated an active component of S. vaninii using high performance countercurrent chromatography and identified it as davallialactone using mass spectrometry with 97.726 % purity. A microplate reader showed that davallialactone had mixed inhibition of XO activity with a half-inhibitory concentration value of 90.07 ± 2.12 μM. In addition, the collision between davallialactone and XO led to fluorescence quenching and conformational changes in XO, which were mainly driven by hydrophobicity and hydrogen bonding. Molecular simulations further showed that davallialactone was located at the center of the molybdopterin (Mo-Pt) of XO and interacted with amino acid residues Phe798, Arg912, Met1038, Ala1078, Ala1079, Gln1194, and Gly1260, suggesting that entering the enzyme-catalyzed reaction was unfavorable for the substrate. We also observed face-to-face π-π interactions between the aryl ring of davallialactone and Phe914. Cell biology experiments indicated that davallialactone reduced the expression of the inflammatory factors, tumor necrosis factor alpha and interleukin-1 beta (P < 0.05), can effectively alleviate cellular oxidative stress. This study showed that davallialactone significantly inhibits XO and has the potential to be developed into a novel medicine to prevent hyperuricemia and treat gout.
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Affiliation(s)
- Jiling Song
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Zhanwei Wang
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Yu Chi
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Yong Zhang
- The Central Laboratory, Changchun Normal University, Changchun 130032, China; Nanguan Middle School, Honghua Gang District, Zunyi 563000, China
| | - Chenyi Fang
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Yuting Shu
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Jing Cui
- The Central Laboratory, Changchun Normal University, Changchun 130032, China
| | - Helong Bai
- The College of Chemistry, Changchun Normal University, Changchun 130032, China
| | - Jing Wang
- The College of Chemistry, Changchun Normal University, Changchun 130032, China; The Central Laboratory, Changchun Normal University, Changchun 130032, China.
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11
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Zhang R, Zhang H, Shi H, Zhang D, Zhang Z, Liu H. Strategic developments in the drug delivery of natural product dihydromyricetin: applications, prospects, and challenges. Drug Deliv 2022; 29:3052-3070. [PMID: 36146939 PMCID: PMC9518266 DOI: 10.1080/10717544.2022.2125601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Dihydromyricetin (DHM) is an important natural flavonoid that has attracted much attention because of its various functions such as protecting the cardiovascular system and liver, treating cancer and neurodegenerative diseases, and anti-inflammation effect, etc. Despite its great development potential in pharmacy, DHM has some problems in pharmaceutical applications such as low solubility, permeability, and stability. To settle these issues, extensive research has been carried out on its physicochemical properties and dosage forms to produce all kinds of DHM preparations in the past ten years. In addition, the combined use of DHM with other drugs is a promising strategy to expand the application of DHM. However, although invention patents for DHM preparations have been issued in several countries, the current transformation of DHM research results into market products is insufficient. To date, there is still a lack of deep research into the pharmacokinetics, pharmacodynamics, toxicology, and action mechanism of DHM preparations. Besides, preparations for combined therapy of DHM with other drugs are scarcely reported, which necessitates the development of dosage forms for this application. Apart from medicine, the development of DHM in the food industry is also of great potential. Due to its multiple effects and excellent safety, DHM preparations can be developed for functional drinks and foods. Through this review, we hope to draw more attention to the development potential of DHM and the above challenges and provide valuable references for the research and development of other natural products with a similar structure-activity relationship to this drug.
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Affiliation(s)
- Ruirui Zhang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Hao Zhang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Houyin Shi
- Department of Orthopedics, Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Dan Zhang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Zhuo Zhang
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
| | - Hao Liu
- School of Pharmacy, Southwest Medical University, Luzhou City, Sichuan, People's Republic of China
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12
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Optimizing of the extraction conditions for anthocyanin’s from purple corn flour (Zea mays L): evidences on selected properties of optimized extract. Food Chem X 2022; 17:100521. [DOI: 10.1016/j.fochx.2022.100521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022] Open
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13
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Liu K, Zeng N, Pan J, Gong D, Zhang G. Synthesis, characterization, toxicity evaluation and inhibitory effect of hesperitin-copper (Ⅱ) complex on xanthine oxidase. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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14
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Wang L, Wang Y, Chen M, Zhu Y, Qin Y, Zhou Y. Tetrabutylammonium bromide-based hydrophobic deep eutectic solvent for the extraction and separation of dihydromyricetin from vine tea and its inhibitory efficiency against xanthine oxidase. RSC Adv 2022; 12:28659-28676. [PMID: 36320535 PMCID: PMC9540247 DOI: 10.1039/d2ra04266e] [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: 07/11/2022] [Accepted: 09/25/2022] [Indexed: 11/06/2022] Open
Abstract
In this study, deep eutectic solvent oscillation-assisted extraction (DES-OS) combined with macroporous resin adsorption and desorption technology was used to achieve the rapid green extraction and separation of the characteristic component dihydromyricetin (DMY) from vine tea. Multivariate data analysis showed that the DES system composed of tetrabutylammonium bromide (N444Br) and pyruvic acid (molar ratio 1 : 2) had good extraction performance for DMY. The influence parameters of DES-OS were studied, and optimized by the single-factor test and response surface methodology (RSM) with Box–Behnken design (BBD). The extraction model of DMY was established and verified. The results showed that the extraction yield of DMY could reach 40.1 mg g−1 under the optimal conditions (DES water contents of 71.18%, extraction time of 2.80 h, extraction temperature of 46.40 °C), which is in good agreement with the predicted value. In addition, Fourier transform infrared spectroscopy (FT-IR) was used to characterize the solvent before and after extraction. Scanning electron microscopy (SEM) results further confirmed that tetrabutylammonium bromide:pyruvate enhanced the destruction of the cell wall structure, resulting in the release of more DMY. Furthermore, different macroporous resins were selected for the separation of DMY for the DES-OS extract, and it was found that the DM301 resin had the ideal recovery performance under optimized dynamic condition. Finally, the product was found to have an inhibitory effect against xanthine oxidase (XO) as a mixed-type competitive inhibitor with IC50 values of (5.79 ± 0.22) × 10−5 mol L−1. The inhibitory mechanisms of DMY on XO were explored by enzyme kinetics, spectroscopy, molecular docking and molecular dynamics analysis approaches, which provided a theoretical basis for the above inhibition assays. In this study, deep eutectic solvent oscillation-assisted extraction (DES-OS) combined with macroporous resin adsorption and desorption technology was used to achieve the rapid green extraction and separation of dihydromyricetin (DMY) from vine tea.![]()
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Affiliation(s)
- Liling Wang
- The Key Laboratory of Biochemical Utilization of Zhejiang Province, Zhejiang Academy of ForestryHangzhou 310023China
| | - Yanbin Wang
- The Key Laboratory of Biochemical Utilization of Zhejiang Province, Zhejiang Academy of ForestryHangzhou 310023China
| | - Meixu Chen
- School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyHangzhou 310023China
| | - Yaoyao Zhu
- School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyHangzhou 310023China
| | - Yuchuan Qin
- The Key Laboratory of Biochemical Utilization of Zhejiang Province, Zhejiang Academy of ForestryHangzhou 310023China
| | - Yifeng Zhou
- School of Biological and Chemical Engineering, Zhejiang University of Science and TechnologyHangzhou 310023China
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15
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Ji H, Yu Z, Zhao W. Colla corii asini–
derived peptides as tyrosinase inhibitors: Identification, inhibitory activity, and molecular mechanism. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.16095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Huizhuo Ji
- School of Food Science and Engineering Hainan University 570228 Haikou P.R. China
- School of Food and Health Beijing Technology and Business University, Bejing, 100048 China
| | - Zhipeng Yu
- School of Food Science and Engineering Hainan University 570228 Haikou P.R. China
| | - Wenzhu Zhao
- School of Food Science and Engineering Hainan University 570228 Haikou P.R. China
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16
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Wu M, Liu M, Wang F, Cai J, Luo Q, Li S, Zhu J, Tang Z, Fang Z, Wang C, Chen H. The inhibition mechanism of polyphenols from Phyllanthus emblica Linn. fruit on acetylcholinesterase: A interaction, kinetic, spectroscopic, and molecular simulation study. Food Res Int 2022; 158:111497. [DOI: 10.1016/j.foodres.2022.111497] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/20/2022] [Accepted: 06/08/2022] [Indexed: 11/04/2022]
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17
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Sun Y, Zhou L, Liao T, Liu J, Yu K, Zou L, Zhou W, Liu W. Comparing the effect of benzoic acid and cinnamic acid hydroxyl derivatives on polyphenol oxidase: activity, action mechanism, and molecular docking. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2022; 102:3771-3780. [PMID: 34921410 DOI: 10.1002/jsfa.11725] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 12/03/2021] [Accepted: 12/17/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Polyphenol oxidase (PPO) is considered to have a key role in the food industry because it initiates enzymatic browning in the processing and storage of fruit and vegetables. Increasing numbers of benzoic and cinnamic acid derivatives have been found to be efficient inhibitors of polyphenol oxidase, but a comparison study on activity and action mechanism is lacking. In this study, 18 benzoic acid and cinnamic acid hydroxy derivatives were selected and investigated. RESULTS Three substrates, four activators and 11 inhibitors were identified from benzoic and cinnamic acid derivatives. 2,4-Dihydroxycinnamic acid and benzoic acid showed the strongest inhibitory effect on PPO, with IC50 of 0.092 and1.425 mmol L-1 , respectively. Benzoic acid reversibly inhibited PPO in a competitive manner, while 2,4-dihydroxycinnamic acid showed a mixed-type inhibition. Both of them showed that static-type fluorescence quenching and electrostatic interaction were the main driving force in the bonding process. Compared with benzoic acid, 2,4-dihydroxycinnamic acid more easily formed hydrogen bonds in the active site of PPO, making the interaction more stable. CONCLUSION Comparative analysis showed that the inhibition effect of cinnamic acid hydroxyl derivatives on PPO was stronger than that of benzoic acid derivatives. Benzoic acid and 2,4-dihydroxycinnamic acid were the strongest inhibitors. PPO inhibitors identified from benzoic and cinnamic acid derivatives are expected to be promising inhibitors for controlling fruit and vegetable browning. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Yuefang Sun
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Lei Zhou
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Tao Liao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Junping Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Kaibo Yu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Liqiang Zou
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Wei Zhou
- Key Laboratory of Tropical Crop Products Processing of Ministry of Agriculture and Rural Affairs, Agricultural Products Processing Research Institute of Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Wei Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
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18
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Taherkhani N, Hekmat A, Piri H, Haghbeen K. Structural and inhibitory effects of fulvic and humic acids against tyrosinase. J Food Biochem 2022; 46:e14279. [PMID: 35727699 DOI: 10.1111/jfbc.14279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/25/2022] [Accepted: 05/17/2022] [Indexed: 12/01/2022]
Abstract
Inhibition of tyrosinase activity can control fruit browning and preserve the flavor and nutritional value of food. The impacts of fulvic acid (FA) and humic acid (HA) on tyrosinase activity were investigated utilizing circular dichroism (CD) and fluorescence spectroscopy, molecular docking (MD), and molecular dynamics simulations. HA and FA demonstrated a mixed type of inhibition with Ki 2.02 and 5.2 μM, respectively. The thermodynamic parameters displayed that the hydrogen bond and hydrophobic force play a major role in the FA-tyrosinase and HA-tyrosinase interaction, respectively. Fluorescence experiments demonstrated changes in tyrosinase tertiary structures. HA could not destroy the tyrosinase secondary structure significantly, however, FA has a significant influence on the tyrosinase secondary structure. The molecular dynamics findings demonstrated the minimal fluctuations and the lowest flexibility in the complex amino acids in the HA-tyrosinase and FA-tyrosinase interaction. Altogether, HA and FA could be utilized in food industries as an accessible natural source for tyrosinase inhibition. PRACTICAL APPLICATIONS: Recently, the investigation of tyrosinase inhibitors from the biosphere for hindrance of undesired browning in the food industry has increased considerably. Mushroom tyrosinase is a suitable model for kinetic research owing to its availability as well as close conformational similarity to tyrosinase in a mammal. Natural sources and their effective compounds could have wonderful potential on tyrosinase activity and structure, thus, in this study, the interactions between tyrosinase and fulvic acid (FA) and Humic acid (HA) were investigated. Previously, it has been shown that HA and FA have antioxidant properties and they can improve the quality of food via retarding lipid oxidation. Altogether, further investigations are warranted to draw firm conclusions, HA and FA could be utilized in food industries not only as antioxidant agents but also as an accessible natural source for tyrosinase inhibition.
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Affiliation(s)
- Negar Taherkhani
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Azadeh Hekmat
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hossein Piri
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Disease, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Kamahldin Haghbeen
- Biochemistry and Biophysics Department, National Institute for Genetic Engineering and Biotechnology, Tehran, Iran
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19
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Whole Cell-mediated Biocatalytic Synthesis of Helicid Cinnamylate and Its Biological Evaluation as a Novel Tyrosinase Inhibitor. BIOTECHNOL BIOPROC E 2022. [DOI: 10.1007/s12257-021-0288-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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20
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Hou M, Xiang H, Hu X, Chen S, Wu Y, Xu J, Yang X. Novel potential XOD inhibitory peptides derived from Trachinotus ovatus: Isolation, identification and structure-function analysis. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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21
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Yu ZY, Xu K, Wang X, Wen YT, Wang LJ, Huang DQ, Chen XX, Chai WM. Punicalagin as a novel tyrosinase and melanin inhibitor: Inhibitory activity and mechanism. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113318] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Insights on the Inhibitory Power of Flavonoids on Tyrosinase Activity: A Survey from 2016 to 2021. Molecules 2021; 26:molecules26247546. [PMID: 34946631 PMCID: PMC8705159 DOI: 10.3390/molecules26247546] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/07/2021] [Accepted: 12/09/2021] [Indexed: 02/08/2023] Open
Abstract
Tyrosinase is a multifunctional copper-containing oxidase enzyme that initiates melanin synthesis in humans. Excessive accumulation of melanin pigments or the overexpression of tyrosinase may result in skin-related disorders such as aging spots, wrinkles, melasma, freckles, lentigo, ephelides, nevus, browning and melanoma. Nature expresses itself through the plants as a source of phytochemicals with diverse biological properties. Among these bioactive compounds, flavonoids represent a huge natural class with different categories such as flavones, flavonols, isoflavones, flavan-3-ols, flavanones and chalcones that display antioxidant and tyrosinase inhibitor activities with a diversity of mechanistic approaches. In this review, we explore the role of novel or known flavonoids isolated from different plant species and their participation as tyrosinase inhibitors reported in the last five years from 2016 to 2021. We also discuss the mechanistic approaches through the different studies carried out on these compounds, including in vitro, in vivo and in silico computational research. Information was obtained from Google Scholar, PubMed, and Science Direct. We hope that the updated comprehensive data presented in this review will help researchers to develop new safe, efficacious, and effective drug or skin care products for the prevention of and/or protection against skin-aging disorders.
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23
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Zhao Y, Wang M, Zhang J, Xiong C, Huang G. The mechanism of delaying starch digestion by luteolin. Food Funct 2021; 12:11862-11871. [PMID: 34734615 DOI: 10.1039/d1fo02173g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, the mechanisms of the delay of starch digestion by luteolin were revealed by studying the luteolin-PPA (porcine pancreatic α-amylase) interaction and luteolin-starch interaction. The luteolin-PPA interaction was investigated by inhibitory kinetics analysis, fluorescence quenching, circular dichroism (CD), Fourier transform infrared (FT-IR) spectroscopy and molecular docking. The results of the inhibitory kinetics revealed that luteolin was a mixed-type inhibitor of PPA and that the inhibitory action was reversible. Fluorescence spectroscopy (including fluorescence quenching and thermodynamics) and molecular docking analyses indicated that hydrogen bonds and hydrophobic forces were the main forces between PPA and luteolin. CD and FT-IR spectroscopy analyses showed that the interaction between luteolin and PPA changed the secondary structure of PPA and induced a decline in its activity. In addition, the luteolin-starch interaction was also studied using UV-visible absorption and X-ray diffraction analyses. These indicated that luteolin could bind with PPA, and that hydrogen bonds and van der Waals forces may be present. Overall, luteolin delayed starch digestion not only by binding with PPA but also by binding with starch. Thus, luteolin has the potential to prevent and control diabetes by being added into starch-based food to delay starch digestion.
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Affiliation(s)
- Yiling Zhao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Ming Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Jinsheng Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Chunhong Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Ganhui Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
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24
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A pair of homoisoflavonoid analogues (6-aldehydo-isoophiopogonanone A/6-aldehydo-isoophiopogonanone B) from Ophiopogon japonicus as a tyrosinase inhibitor: inhibitory activity, conformational change and mechanism. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03902-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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25
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Wang L, Qin Y, Wang Y, Zhou Y, Liu B, Bai M, Tong X, Fang R, Huang X. Inhibitory mechanism of two homoisoflavonoids from Ophiopogon japonicus on tyrosinase activity: insight from spectroscopic analysis and molecular docking. RSC Adv 2021; 11:34343-34354. [PMID: 35497266 PMCID: PMC9042378 DOI: 10.1039/d1ra06091k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/08/2021] [Indexed: 12/25/2022] Open
Abstract
The inhibition mechanism of two homoisoflavonoids from Ophiopogon japonicus including methylophiopogonanone A (MO-A) and methylophiopogonanone B (MO-B) on tyrosinase (Tyr) was studied by multiple spectroscopic techniques and molecular docking. The results showed that the two homoisoflavonoids both inhibited Tyr activity via a reversible mixed-inhibition, with a half inhibitory concentration (IC50) of (10.87 ± 0.25) × 10-5 and (18.76 ± 0.14) × 10-5 mol L-1, respectively. The fluorescence quenching and secondary structure change of Tyr caused by MO-A and B are mainly driven by hydrophobic interaction and hydrogen bonding. Molecular docking analysis indicated that phenylmalandioxin in MO-A and methoxy in MO-B could coordinate with a Cu ion in the active center of Tyr, and interacted with amino acid Glu322 to form hydrogen bonding, occupying the catalytic center to block the entry of the substrate and consequently inhibit Tyr activity. This study may provide new perspectives on the inhibition mechanism of MO-A and MO-B on Tyr and serve a scientific basis for screening effective Tyr inhibitors.
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Affiliation(s)
- Liling Wang
- Zhejiang Academy of Forestry Hangzhou 310023 China
| | - Yuchuan Qin
- Zhejiang Academy of Forestry Hangzhou 310023 China
| | - Yanbin Wang
- Zhejiang Academy of Forestry Hangzhou 310023 China
| | - Yifeng Zhou
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology Hangzhou 310023 China
| | - Bentong Liu
- Zhejiang Academy of Forestry Hangzhou 310023 China
| | - Minge Bai
- Zhejiang Academy of Forestry Hangzhou 310023 China
| | | | - Ru Fang
- Zhejiang Academy of Forestry Hangzhou 310023 China
| | - Xubo Huang
- Zhejiang Academy of Forestry Hangzhou 310023 China
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26
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Cheng R, Shi W, Yuan Q, Tang R, Wang Y, Yang D, Xiao X, Zeng J, Chen J, Wang Y. 5-Substituted isatin thiosemicarbazones as inhibitors of tyrosinase: Insights of substituent effects. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 255:119669. [PMID: 33812239 DOI: 10.1016/j.saa.2021.119669] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/22/2021] [Accepted: 02/28/2021] [Indexed: 06/12/2023]
Abstract
Seven isatin-thiosemicarbazone analogues bearing different substituents (R) attached at C-5 of the indoline ring, TSC-ISA-R (R = -H, -CH3, -OCH3, -OCF3, -F, -Cl and -NO2), were synthesized and evaluated as inhibitors of mushroom tyrosinase (TYR). The inhibitory behaviour and performance of TSC-ISA-R were investigated spectroscopically in relation to the substituent modifications through examining their inhibition against the diphenolase activity of TYR using L-DOPA as a substrate. The IC50 values of TSC-ISA-R were determined to be in the range of 81-209 μM. The kinetic analysis showed that TSC-ISA-R were reversible and mixed type inhibitors. Three potential non-covalent interactions rather than complexation including the binding of TSC-ISA-R with free TYR, TYR-L-DOPA complex, and with substrate L-DOPA were found to be involved in the inhibition. The substituent modifications affected these interactions by varying the characters of the resulting TSC-ISA-R in different degrees. The thiosemicarbazido moiety of each TSC-ISA-R contributed predominantly to the inhibition, and the isatin moiety seemed to play a regulatory role in the binding of TSC-ISA-R to the target molecules. The results of theoretical calculations using density functional theory method indicated a different effect of -R on the electron distribution in HOMO of TSC-ISA-R. The LUMO-HOMO energy gap of TSC-ISA-R almost accords with the trend of their experimental inhibition potency.
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Affiliation(s)
- Run Cheng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410000, PR China; School of Chemistry and Chemical Engineering, Building Materials Research Academy, Yancheng Institute of Technology, Jianjun East Rd. 211, Yancheng 224051, PR China
| | - Wenyan Shi
- School of Chemistry and Chemical Engineering, Building Materials Research Academy, Yancheng Institute of Technology, Jianjun East Rd. 211, Yancheng 224051, PR China
| | - Qingyun Yuan
- School of Chemistry and Chemical Engineering, Building Materials Research Academy, Yancheng Institute of Technology, Jianjun East Rd. 211, Yancheng 224051, PR China; School of Chemistry and Chemical Engineering, Jiangsu University, Xuefu Rd. 301, Zhenjiang 212013, PR China
| | - Ruiren Tang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410000, PR China
| | - Yujie Wang
- School of Chemistry and Chemical Engineering, Building Materials Research Academy, Yancheng Institute of Technology, Jianjun East Rd. 211, Yancheng 224051, PR China
| | - Di Yang
- School of Chemistry and Chemical Engineering, Building Materials Research Academy, Yancheng Institute of Technology, Jianjun East Rd. 211, Yancheng 224051, PR China
| | - Xin Xiao
- School of Chemistry and Chemical Engineering, Building Materials Research Academy, Yancheng Institute of Technology, Jianjun East Rd. 211, Yancheng 224051, PR China
| | - Jianping Zeng
- School of Chemistry and Chemical Engineering, Building Materials Research Academy, Yancheng Institute of Technology, Jianjun East Rd. 211, Yancheng 224051, PR China
| | - Jingwen Chen
- School of Chemistry and Chemical Engineering, Building Materials Research Academy, Yancheng Institute of Technology, Jianjun East Rd. 211, Yancheng 224051, PR China.
| | - Yanqing Wang
- College of Chemistry and Environmental Engineering, Institute of Environmental Toxicology and Environmental Ecology, Yancheng Teachers University, Xiwang Avenue South Rd. 2, Yancheng 224007, PR China.
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27
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Xie Z, He M, Zhai Y, Xin F, Yu S, Yu S, Xiao H, Song Y. Inhibitory kinetics and mechanism of oleanolic acid on α-glucosidase. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-00920-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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28
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Lu Y, Xu Y, Song MT, Qian LL, Liu XL, Gao RY, Han RM, Skibsted LH, Zhang JP. Promotion effects of flavonoids on browning induced by enzymatic oxidation of tyrosinase: structure-activity relationship. RSC Adv 2021; 11:13769-13779. [PMID: 35423946 PMCID: PMC8697750 DOI: 10.1039/d1ra01369f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/05/2021] [Indexed: 12/14/2022] Open
Abstract
Tyrosinase, widely distributed in nature, is a copper-containing polyphenol oxidase involved in the formation of melanin. Flavonoids are most often considered as tyrosinase inhibitors but have also been confirmed to be tyrosinase substrates. Four structure-related flavonoids including flavones (apigenin and luteolin) and flavonols (kaempferol and quercetin) are found to promote not inhibit browning induced by tyrosinase catalyzed oxidation both in model systems and in mushrooms under aerobic conditions. A comparison with enzymatic oxidation and autooxidation of flavonoids alone has helped to clarify why flavonoids function as a substrate rather than an inhibitor. Flavonoids almost do not affect the kinetics of melanin formation from enzymatic oxidation of l-dopa in excess. In addition, a new brown complex formed during the reaction of flavonoid quinone and dopaquinone is suggested to enhance the browning effects by competing with isomerization and autooxidation. Structure-activity relationships of the four flavonoids in melanin formation leading to browning induced by autooxidation and enzymatic oxidation confirm the enzymatic nature of the browning.
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Affiliation(s)
- Yao Lu
- Department of Chemistry, Renmin University of China Beijing 100872 China +86-10-6251-6444 +86-10-6251-6604
| | - Yi Xu
- Department of Chemistry, Renmin University of China Beijing 100872 China +86-10-6251-6444 +86-10-6251-6604
| | - Meng-Ting Song
- Department of Chemistry, Renmin University of China Beijing 100872 China +86-10-6251-6444 +86-10-6251-6604
| | - Ling-Ling Qian
- Department of Chemistry, Renmin University of China Beijing 100872 China +86-10-6251-6444 +86-10-6251-6604
| | - Xiao-Lin Liu
- Department of Chemistry, Renmin University of China Beijing 100872 China +86-10-6251-6444 +86-10-6251-6604
| | - Rong-Yao Gao
- Department of Chemistry, Renmin University of China Beijing 100872 China +86-10-6251-6444 +86-10-6251-6604
| | - Rui-Min Han
- Department of Chemistry, Renmin University of China Beijing 100872 China +86-10-6251-6444 +86-10-6251-6604
| | - Leif H Skibsted
- Department of Food Science, University of Copenhagen Rolighedsvej 30 DK-1958 Frederiksberg C Denmark
| | - Jian-Ping Zhang
- Department of Chemistry, Renmin University of China Beijing 100872 China +86-10-6251-6444 +86-10-6251-6604
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29
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Li F, Tang Y. The activation mechanism of peroxidase by ultrasound. ULTRASONICS SONOCHEMISTRY 2021; 71:105362. [PMID: 33096324 PMCID: PMC7786524 DOI: 10.1016/j.ultsonch.2020.105362] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/30/2020] [Accepted: 10/06/2020] [Indexed: 05/25/2023]
Abstract
The activation mechanism of peroxidase by ultrasound was investigated. The catalysis performance of peroxidase with ultrasound treatment was prior to the controls determined by UV-visible spectra and Fourier transform infrared spectra. The transformation of tryptophan residues in peroxidase led to the increase of a-helix and anti-parallel content in the secondary structure, and the content of p-sheet, p-turn and random coil in the secondary structure. In addition, under the atomic force microscope, under ultrasonic treatment, the large molecular clusters of tyrosinase are broken down into small molecular clusters. The current results showed that the activity of peroxidase is activated under ultrasonic treatment, which is mainly caused by ultrasound without conformational change, the catalytic center is exposed, and the affinity with the substrate is stronger.
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Affiliation(s)
- Fengmao Li
- College of Life Science, Southwest University, Chongqing 400715, China; Chongqing Sweet Potato Engineering Research Center, Chongqing 400715, China
| | - Yunming Tang
- College of Life Science, Southwest University, Chongqing 400715, China; Chongqing Sweet Potato Engineering Research Center, Chongqing 400715, China.
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30
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Yu Q, Fan L. Understanding the combined effect and inhibition mechanism of 4-hydroxycinnamic acid and ferulic acid as tyrosinase inhibitors. Food Chem 2021; 352:129369. [PMID: 33706137 DOI: 10.1016/j.foodchem.2021.129369] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/11/2021] [Accepted: 02/12/2021] [Indexed: 12/27/2022]
Abstract
The development of tyrosinase inhibitors to prevent the enzymatic browning have become a research hotspot in food industry. 4-Hydroxycinnamic acid (CA) and ferulic acid (FA) are both the derivates of cinnamic acids, which are widely coexisted in plants seeds and leaves. CA combined with FA (inhibition rate of 90.44%) were found to effectively inhibit tyrosinase activity than employing CA and FA alone (inhibition rate of 12.15% and 22.17%, respectively). CA-FA-tyrosinase complex resulted in fluorescence quenching. The first-order kinetics and Weibull models well described the inactivation of tyrosinase at 2-4 mM and 6-10 mM of CA and FA, respectively. Additionally, UV-vis spectrum indicated that several characteristic groups such as hydroxyl group in CA competed with the nucleophilic attack of intramolecular cyclization, leading to the decrease of characteristic peak. Molecular docking further studied that CA and FA interacted with the activity cavity of tyrosinase by amino acids residues Ser282, His263, and Val283.
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Affiliation(s)
- Qun Yu
- State Key Laboratory of Food Science & Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China
| | - Liuping Fan
- State Key Laboratory of Food Science & Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China; Collaborat Innovat Ctr Food Safety & Qual Control, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China.
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Li F, Tang Y. Inhibition mechanism: Phytic acid, NADH as a peroxidase inhibitor. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 244:118856. [PMID: 32882659 DOI: 10.1016/j.saa.2020.118856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 08/12/2020] [Accepted: 08/15/2020] [Indexed: 06/11/2023]
Abstract
Peroxidase, a key enzyme causing enzymatic browning, and affected the potential values of fruit and vegetables. Phytic acid and NADH inhibited peroxidase in a competitive manner due to their reducing properties, and it's IC50 (1.18 ± 0.32) × 10-8, (8.02 ± 0.45) × 10-6 mol L-1, respectively. The interaction between phytic acid, NADH and peroxidase contributed to intrinsic fluorescence quenching and conformation alternation with a accuracy determination by multispectroscopic techniques (fluorescence spectra, FT-IR and CD spectra), respectively. Molecular docking simulation revealed that phytic acid, NADH interacted with His170, Ala34, Arg38, Ser73, Arg31, Lys174, Gln176, Asn175, Arg75; Gln176, Asn175, Phe221, Lys174, Gly173, Ser167, Phe172, Gly169, His170 in peroxidase, respectively and blocked substrates into catalytic reactions.
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Affiliation(s)
- Fengmao Li
- College of Life Science, Southwest University, Chongqing 400715, China; Chongqing Sweet Potato Engineering Research Center, Chongqing 400715, China
| | - Yunming Tang
- College of Life Science, Southwest University, Chongqing 400715, China; Chongqing Sweet Potato Engineering Research Center, Chongqing 400715, China.
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Li F, Fu Y, Yang H, Tang Y. The inhibition mechanism of luteolin on peroxidase based on multispectroscopic techniques. Int J Biol Macromol 2021; 166:1072-1081. [PMID: 33157143 DOI: 10.1016/j.ijbiomac.2020.10.262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/30/2020] [Accepted: 10/31/2020] [Indexed: 01/11/2023]
Abstract
Luteolin, a plant-derived flavonoid, was found to exert effective inhibitory effect to peroxidase activity in a non-competitive manner with an IC50 of (6.62 ± 0.45) × 10-5 mol L-1. The interaction between luteolin and peroxidase induced the formation of a static complex with a binding constant (Ksv) of 7.31 × 103 L mol-1 s-1 driven by hydrogen bond and hydrophobic interaction. Further, the molecular interaction between luteolin and peroxidase resulted in intrinsic fluorescence quenching, structural and conformational alternations which were determined by multispectroscopic techniques combined with computational molecular docking. Molecular docking results revealed that luteolin bound to peroxidase and interacted with relevant amino acid residues in the hydrophobic pocket. These results will provide information for screening additional peroxidase inhibitors and provide evidence of luteolin's potential application in preservation and processing of fruit and vegetables and clinical disease remedy.
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Affiliation(s)
- Fengmao Li
- College of Life Science, Southwest University, Chongqing 400715, China; Engineering & Technology Research Center for Sweet potato of Chongqing, Chongqing 400715, China
| | - Yufan Fu
- College of Life Science, Southwest University, Chongqing 400715, China; Engineering & Technology Research Center for Sweet potato of Chongqing, Chongqing 400715, China
| | - Hao Yang
- College of Life Science, Southwest University, Chongqing 400715, China; Engineering & Technology Research Center for Sweet potato of Chongqing, Chongqing 400715, China
| | - Yunming Tang
- College of Life Science, Southwest University, Chongqing 400715, China; Engineering & Technology Research Center for Sweet potato of Chongqing, Chongqing 400715, China.
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Structure analysis and inhibition mechanism of peroxidase in 'Zhongshu 1' sweet potato. Process Biochem 2021. [DOI: 10.1016/j.procbio.2020.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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34
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Peng Z, Wang G, Zeng QH, Li Y, Wu Y, Liu H, Wang JJ, Zhao Y. Synthesis, antioxidant and anti-tyrosinase activity of 1,2,4-triazole hydrazones as antibrowning agents. Food Chem 2020; 341:128265. [PMID: 33031957 DOI: 10.1016/j.foodchem.2020.128265] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 07/28/2020] [Accepted: 09/27/2020] [Indexed: 01/22/2023]
Abstract
A series of 1,2,4-triazole hydrazones (1-16) were synthesized, and their inhibitory activities and mechanisms on tyrosinase were investigated by ultraviolet spectrophotometry, fluorescence quenching, molecular docking study, etc. Most of compounds possessed potent tyrosinase inhibitory activity. Thereinto, compound 9 presented the superior activity with IC50 of 0.9 μM, which was markedly lower than the standard kojic acid (IC50 = 64.1 μM). Compound 9 not only interacted with copper ions in the active center of the enzyme but also bound to the enzyme-substrate complex, indicating that it was a competitive-noncompetitive mixed inhibitor. Additionally, it also displayed potent DPPH scavenging activity. Antibrowning test showed that compound 9 effectively reduced the enzymatic browning of fresh-cut potatoes. Furthermore, compound 9 exhibited low cytotoxic activity against human normal cell line with IC50 of 49.9 µM. Overall, the present study suggests that these compounds may serve as lead molecules for developing novel antibrowning agents in food industry.
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Affiliation(s)
- Zhiyun Peng
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Guangcheng Wang
- Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang 550004, China
| | - Qiao-Hui Zeng
- Department of Food Science, Foshan University, Foshan 528000, China
| | - Yufeng Li
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Yi Wu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China
| | - Haiquan Liu
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai 201306, China; Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai 201306, China
| | - Jing Jing Wang
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Department of Food Science, Foshan University, Foshan 528000, China.
| | - Yong Zhao
- College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Laboratory of Quality & Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of Agriculture, Shanghai 201306, China; Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai 201306, China.
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Song X, Hu X, Zhang Y, Pan J, Gong D, Zhang G. Inhibitory mechanism of epicatechin gallate on tyrosinase: inhibitory interaction, conformational change and computational simulation. Food Funct 2020; 11:4892-4902. [DOI: 10.1039/d0fo00003e] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Epicatechin gallate can inhibit the activity of tyrosinase in a mixed-type manner.
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Affiliation(s)
- Xin Song
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Ying Zhang
- Division of Accounting
- Nanchang University
- Nanchang 330047
- China
| | - Junhui Pan
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Deming Gong
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
- Department of Biomedicine
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- 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: 486] [Impact Index Per Article: 97.2] [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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Chen YM, Li C, Zhang WJ, Shi Y, Wen ZJ, Chen QX, Wang Q. Kinetic and computational molecular docking simulation study of novel kojic acid derivatives as anti-tyrosinase and antioxidant agents. J Enzyme Inhib Med Chem 2019; 34:990-998. [PMID: 31072148 PMCID: PMC6522964 DOI: 10.1080/14756366.2019.1609467] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The novel kojic acid derivatives KAD1 and KAD2 have been demonstrated that they exhibited potent anti-melanogenesis activity in our previous report. In this study, we further study the inhibitory mechanism on mushroom tyrosinase. The inhibitory types of both KADs on diphenolase were classified as mixed type based on the results of the kinetic model. The interaction between KADs and tyrosinase was illustrated by fluorescence quenching, molecular docking and copper chelate activity. The KADs were also evaluated with respect to their antioxidant activities by DPPH and ABTS+ assays. The results showed that KADs have more potent antioxidant activities than kojic acid. Our study could provide new ideas for the development of new anti-tyrosinase and antioxidant agents.
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Affiliation(s)
- Yan-Mei Chen
- a School of Life Sciences , Xiamen University , Xiamen , China
| | - Chen Li
- a School of Life Sciences , Xiamen University , Xiamen , China
| | - Wen-Jing Zhang
- a School of Life Sciences , Xiamen University , Xiamen , China
| | - Yan Shi
- a School of Life Sciences , Xiamen University , Xiamen , China
| | - Zi-Jie Wen
- a School of Life Sciences , Xiamen University , Xiamen , China
| | - Qing-Xi Chen
- a School of Life Sciences , Xiamen University , Xiamen , China
| | - Qin Wang
- a School of Life Sciences , Xiamen University , Xiamen , China
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Fan M, Ding H, Zhang G, Hu X, Gong D. Relationships of dietary flavonoid structure with its tyrosinase inhibitory activity and affinity. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.02.076] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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40
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Yu Q, Fan L, Duan Z. Five individual polyphenols as tyrosinase inhibitors: Inhibitory activity, synergistic effect, action mechanism, and molecular docking. Food Chem 2019; 297:124910. [PMID: 31253292 DOI: 10.1016/j.foodchem.2019.05.184] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/07/2019] [Accepted: 05/27/2019] [Indexed: 01/01/2023]
Abstract
Polyphenols can inhibit the enzymatic browning in food, but their indistinct synergistic effect and conformational change have limited their applications. In this paper, the mixture of quercetin, cinnamic acid and ferulic acid (Group 11, KI = 0.239 mM) possessed a higher inhibition ability than quercetin (KI = 0.361 mM), which could promote the spontaneous binding process. The final Group 11-tyrosinase complex is more stable, and the hydrophobic effect is the major driving force during the binding process. Moreover, there is not a direct relationship between the destruction of secondary structures and catalytic activity of tyrosinase. The interaction between ferulic acid and tyrosinase could destroy the secondary structures of enzyme but it had little impact on the tyrosinase activity. Molecular docking suggested that three polyphenols from Group 11 have synergistic effect on tyrosinase. This study provides new perspectives about the development of tyrosinase inhibitors in food products.
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Affiliation(s)
- Qun Yu
- State Key Laboratory of Food Science & Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China
| | - Liuping Fan
- State Key Laboratory of Food Science & Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi, Jiangsu 214122, China.
| | - Zhenhua Duan
- Institute of Food Research, Hezhou University, Guangxi 542899, China
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Pan Y, Jin H, Yang S, Liu H. Changes of volatile organic compounds and bioactivity of Alternaria brassicae GL07 in different ages. J Basic Microbiol 2019; 59:713-722. [PMID: 30994190 DOI: 10.1002/jobm.201800729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 03/20/2019] [Accepted: 03/23/2019] [Indexed: 02/02/2023]
Abstract
Plant endophytes are rich in secondary metabolites and are widely used in medicine, chemical, food, agriculture, and other fields. Here, an endophytic fungus is isolated from Ginkgo biloba L. leaves and identified as Alternaria brassicae GL07 through genotypic characterizations. It can produce fruity scented volatiles. The analysis of volatile organic compounds (VOCs) was done by gas chromatography-mass spectrometry. A total of 32 components were identified; and at different culture times, the composition of VOCs was different. It had more components in the first two weeks, but a fewer components on the 21st day. More olefins, ketone, aldehyde, and alcohol were found in the growth period and more amines and esters were found in the decline period. Also, 2,5-dihydroxyacetophenone, β-ionone, and nonanal were found. They were the same ingredients in Ginkgo essential oils and some of them were isolated for the first time in the volatile constituents of endophytes. The antioxidant activity and whitening activities of all extracts were also evaluated. When cultured for 10 days, it had the strongest 2,2-diphenyl-2-picrylhydrazyl radical (IC50 , 0.56 g/L), hydroxyl radical scavenging ability (IC50 , 0.47 g/L), reducing ability, and tyrosinase inhibition ability (IC50 , 5.18 g/L), which may be due to a large amount of ketones and alcohols produced during the log phase. This demonstrates the potential of A. brassicae GL07 to produce bioactive compounds and to be used for perfume and cosmetic industries.
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Affiliation(s)
- Yun Pan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, PR China
| | - Hongjie Jin
- College of Life Science, Shihezi University, Shihezi, PR China
| | - Shengli Yang
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, PR China
| | - Hong Liu
- College of Life Science, Shihezi University, Shihezi, PR China
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Optimization of Flavonoid Extraction in Dendrobium officinale Leaves and Their Inhibitory Effects on Tyrosinase Activity. Int J Anal Chem 2019; 2019:7849198. [PMID: 31001339 PMCID: PMC6436366 DOI: 10.1155/2019/7849198] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 02/19/2019] [Accepted: 02/25/2019] [Indexed: 11/30/2022] Open
Abstract
In order to establish the extraction technology of flavonoids from Dendrobium officinale leaves, a method combining Plackett–Burman design (PBD), steepest ascent design, and central composite design was developed to optimize the extraction of flavonoids. In addition, the tyrosinase activity inhibition of flavonoids was further tested in vitro. PBD results showed that ethanol concentration and number of extractions were key factors. Response surface methodology (RSM) indicated that the optimal extraction conditions were 78% ethanol concentration, six extraction times, 2 h, and 1:50 solid-liquid ratio. Under these conditions, the total flavonoid content could reach 35 mg/50 mL. In vitro tyrosinase experiment, the extracted total flavonoids had better inhibitory effect on tyrosinase activity than β-arbutin, and its inhibition rate for monophenolase and diphenolase exceeded 100% and 70%, respectively. These results indicate that RSM can effectively improve the extraction of flavonoids from Dendrobium officinale leaves and the flavonoids have the prospect of being applied to foods and cosmetics.
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Wang R, Hu X, Pan J, Gong D, Zhang G. Interaction between quinoline yellow and human serum albumin: spectroscopic, chemometric and molecular docking studies. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:73-82. [PMID: 29797408 DOI: 10.1002/jsfa.9144] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Revised: 05/18/2018] [Accepted: 05/20/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Quinoline yellow (QY), a synthetic colourant widely used in the food industry, has caused extensive concerns because of its potentially harmful effects on human health. In the present work, the interactions between QY and human serum albumin (HSA) were characterized by multiple spectroscopic methods, a chemometric algorithm, and molecular modelling studies. RESULTS The concentration profiles and pure spectra obtained for the components (QY, HSA and QY-HSA complex) from analyses of the expanded UV-visible absorption data matrices by multivariate curve resolution alternating least squares confirmed the QY-HSA interaction process. QY quenched the fluorescence of HSA through formation of a QY-HSA complex that was stabilized by moderate affinity. Hydrophobic forces and hydrogen bonding play major roles in the binding of QY to HSA. Site-specific marker-induced displacement results suggest that QY binds to subdomain IIA of HSA. This was corroborated by the molecular docking results. Decreases in HSA surface hydrophobicity and free sulfhydryl group content indicate that QY causes a contraction of the peptide strand in HSA, hiding the hydrophobic patches of the protein. Analyses by UV-visible absorption, circular dichroism, and three-dimensional fluorescence spectroscopy found that QY causes microenvironmental perturbations around the fluorophores and secondary structure changes in HSA. CONCLUSION This work shows that QY binds to HSA, affecting its structural and functional properties, and provides new insights into the binding mechanism and a comprehensive understanding of the toxicity of QY to biological processes. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Rui Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Junhui Pan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Deming Gong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
- Department of Biomedicine, New Zealand Institute of Natural Medicine Research, Auckland, New Zealand
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
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Integrated study of the mechanism of tyrosinase inhibition by baicalein using kinetic, multispectroscopic and computational simulation analyses. Int J Biol Macromol 2018; 118:57-68. [DOI: 10.1016/j.ijbiomac.2018.06.055] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/04/2018] [Accepted: 06/12/2018] [Indexed: 12/22/2022]
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45
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Ding H, Wu X, Pan J, Hu X, Gong D, Zhang G. New Insights into the Inhibition Mechanism of Betulinic Acid on α-Glucosidase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7065-7075. [PMID: 29902001 DOI: 10.1021/acs.jafc.8b02992] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Betulinic acid (BA), an important pentacyclic triterpene widely distributed in many foods, possesses high antidiabetic activity. In this study, BA was found to exhibit stronger inhibition of α-glucosidase than acarbose with an IC50 value of (1.06 ± 0.02) × 10-5 mol L-1 in a mixed-type manner. BA bound with α-glucosidase to form a BA-α-glucosidase complex, resulting in a more compact structure of the enzyme. The obtained concentrations and spectra profiles of the components resolved by the multivariate-curve resolution-alternating least-squares confirmed the formation of the BA-α-glucosidase complex. Molecular docking showed that BA tightly bound to the active cavity of α-glucosidase, which might hinder the entrance of the substrate leading to a decline in enzyme activity. The chemical modification of α-glucosidase verified the results of the computer simulation that the order of importance of the four amino acid residues in the binding process was His > Tyr > Lys > Arg.
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Affiliation(s)
- Huafang Ding
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
| | - Xiaqing Wu
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
| | - Junhui Pan
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
| | - Deming Gong
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
- New Zealand Institute of Natural Medicine Research , 8 Ha Crescent , Auckland 2104 , New Zealand
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
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Chu J, Wang X, Bi H, Li L, Ren M, Wang J. Dihydromyricetin relieves rheumatoid arthritis symptoms and suppresses expression of pro-inflammatory cytokines via the activation of Nrf2 pathway in rheumatoid arthritis model. Int Immunopharmacol 2018; 59:174-180. [PMID: 29656207 DOI: 10.1016/j.intimp.2018.04.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/09/2018] [Accepted: 04/04/2018] [Indexed: 12/17/2022]
Abstract
Rheumatoid arthritis (RA) is a systemic inflammatory and autoimmune disease. In this research, we estimated the protective effects of Dihydromyricetin (DMY) on RA induced by Complete Freund's Adjuvant (CFA). We found that DMY effectively relieved rheumatoid arthritis symptoms, such as body weight change, paw swelling and rheumatoid arthritis scores. In addition, we also observed that DMY significantly lowered the immune organ indexes (including thymus and spleen) and exhibited the anti-inflammatory effect in CFA-induced rheumatoid arthritis. The results demonstrated that the increased expression levels of interleukin-1β (IL-1β), interleukin-6(IL-6), tumor necrosis factor-α (TNF-α) were significantly inhibited by DMY. Furthermore, the key inflammatory mediator, cyclooxygenase-2 (COX-2) was markedly lowered after treatment with DMY. A mechanistic study indicated that DMY could up-regulate the down-regulation levels of the mRNA and protein of Nrf2, HO-1 and NQO1. Moreover, the Nrf2 activation of DMY was abolished by Nrf2 inhibitor brusatol. Thus, DMY inhibits the expressions of pro-inflammatory cytokines via activating Nrf2 pathway in RA model, which suggests that DMY has potential for further investigation as a candidate anti-arthritic agent in future.
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Affiliation(s)
- Jianguo Chu
- Tangshan GongRen Hospital, Tangshan, Hebei, PR China
| | - Xiujun Wang
- Tangshan GongRen Hospital, Tangshan, Hebei, PR China
| | - Huanjie Bi
- Tangshan GongRen Hospital, Tangshan, Hebei, PR China
| | - Lifeng Li
- Tangshan GongRen Hospital, Tangshan, Hebei, PR China
| | - Mingguang Ren
- Tangshan GongRen Hospital, Tangshan, Hebei, PR China
| | - Jingwei Wang
- Tangshan GongRen Hospital, Tangshan, Hebei, PR China.
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