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Gunia-Krzyżak A, Popiół J, Słoczyńska K, Żelaszczyk D, Koczurkiewicz-Adamczyk P, Wójcik-Pszczoła K, Bucki A, Sapa M, Kasza P, Borczuch-Kostańska M, Marona H, Pękala E. Discovery of (E)-3-(4-chlorophenyl)-N-(5-hydroxypentyl)acrylamide among N-substituted cinnamamide derivatives as a novel cosmetic ingredient for hyperpigmentation. Bioorg Chem 2024; 150:107533. [PMID: 38878750 DOI: 10.1016/j.bioorg.2024.107533] [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: 02/15/2024] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 07/21/2024]
Abstract
Hyperpigmentation disorders may result from inappropriate melanin deposition and/or excessive melanin synthesis. They are classified mainly as aesthetic problems, but they can significantly affect human health by decreasing self-esteem. There are available only limited treatment options for hyperpigmentation disorder, among others, cosmetic products applied topically. Depigmenting ingredients were found to be ineffective and characterized by various side effects. As a result, many efforts are made to discover novel, potent, and safe melanogenesis inhibitors for possible use in topical cosmetic depigmenting formulations. Cinnamic acid derivatives constitute a widely tested group for that purpose. This article reports research in the group of N-alkyl cinnamamide derivatives (un)substituted in phenyl ring. Among tested series, (E)-3-(4-chlorophenyl)-N-(5-hydroxypentyl)acrylamide (compound 21) showed the most promising inhibitory properties in mushroom tyrosinase assay (IC50 = 36.98 ± 1.07 µM for monophenolase activity, IC50 = 146.71 ± 16.82 µM for diphenolase activity) and melanin production inhibition in B16F10 mouse melanoma cell line at concentration 6.25 µM resulting probably from decreasing of Tyr, Mitf, Tyrp-1, and Tyrp-2 genes expression. This compound also showed melanin production inhibitory properties in pigmented reconstructed human epidermis when used in 1 % and 2 % solutions in 50 % PEG400. In vitro evaluation of its safety profile showed no cytotoxicity to human keratinocytes HaCaT, human skin fibroblasts BJ, and human primary epidermal melanocytes HEMa, no mutagenicity in the Ames test, no genotoxicity in micronucleus test, no phototoxicity, as well as no skin irritation potential tested in PEG400 solution. This compound was also shown to penetrate across the epidermis to reach the possible site of action. The performed research led to classify (E)-3-(4-chlorophenyl)-N-(5-hydroxypentyl)acrylamide as a novel potential depigmenting cosmetic ingredient.
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Affiliation(s)
- Agnieszka Gunia-Krzyżak
- Department of Bioorganic Chemistry, Chair of Organic Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Justyna Popiół
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland.
| | - Karolina Słoczyńska
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Dorota Żelaszczyk
- Department of Bioorganic Chemistry, Chair of Organic Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Paulina Koczurkiewicz-Adamczyk
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Katarzyna Wójcik-Pszczoła
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Adam Bucki
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Michał Sapa
- Department of Medicinal Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Patryk Kasza
- Department of Organic Chemistry, Chair of Organic Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Magda Borczuch-Kostańska
- Department of Bioorganic Chemistry, Chair of Organic Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Henryk Marona
- Department of Bioorganic Chemistry, Chair of Organic Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
| | - Elżbieta Pękala
- Department of Pharmaceutical Biochemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688 Kraków, Poland
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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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3
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Xie D, Han K, Jiang Q, Xie S, Zhou J, Zhang Y, Xu J, He Y, Zhao P, Yang X. Design, synthesis, and inhibitory activity of hydroquinone ester derivatives against mushroom tyrosinase. RSC Adv 2024; 14:6085-6095. [PMID: 38370459 PMCID: PMC10870825 DOI: 10.1039/d4ra00007b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Accepted: 02/05/2024] [Indexed: 02/20/2024] Open
Abstract
Tyrosinase is a widely distributed copper-containing enzyme found in various organisms, playing a crucial role in the process of melanin production. Inhibiting its activity can reduce skin pigmentation. Hydroquinone is an efficient inhibitor of tyrosinase, but its safety has been a subject of debate. In this research, a scaffold hybridization strategy was employed to synthesize a series of hydroquinone-benzoyl ester analogs (3a-3g). The synthesized compounds were evaluated for their inhibitory activity against mushroom tyrosinase (mTyr). The results revealed that these hydroquinone-benzoyl ester analogs exhibited inhibitory activity against mTyr, with compounds 3a-3e displaying higher activity, with compound 3b demonstrating the highest potency (IC50 = 0.18 ± 0.06 μM). Kinetic studies demonstrated that the inhibition of mTyr by compounds 3a-3e was reversible, although their inhibition mechanisms varied. Compounds 3a and 3c exhibited non-competitive inhibition, while 3b displayed mixed inhibition, and 3d and 3e showed competitive inhibition. UV spectroscopy analysis indicated that none of these compounds chelated with copper ions in the active center of the enzyme. Molecular docking simulations and molecular dynamics studies revealed that compounds 3a-3e could access the active pocket of mTyr and interact with amino acid residues in the active site. These interactions influenced the conformational flexibility of the receptor protein, subsequently affecting substrate-enzyme binding and reducing enzyme catalytic activity, in line with experimental findings. Furthermore, in vitro melanoma cytotoxicity assay of compound 3b demonstrated its higher toxicity to A375 cells, while displaying low toxicity to HaCaT cells, with a dose-dependent effect. These results provide a theoretical foundation and practical basis for the development of novel tyrosinase inhibitors.
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Affiliation(s)
- Dong Xie
- Key Laboratory of National Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University Kunming Yunnan 650224 PR China
| | - Kangjia Han
- Key Laboratory of National Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University Kunming Yunnan 650224 PR China
| | - Qian Jiang
- Key Laboratory of National Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University Kunming Yunnan 650224 PR China
| | - Sida Xie
- Key Laboratory of National Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University Kunming Yunnan 650224 PR China
| | - Jielong Zhou
- Key Laboratory of National Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University Kunming Yunnan 650224 PR China
| | - Yingjun Zhang
- Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences Kunming Yunnan 650204 PR China
| | - Junming Xu
- Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry Nanjing Jiangsu 210042 PR China
| | - Yuanping He
- Kunming Beiye Dai Medicine Research Institute Kunming Yunnan 650499 PR China
| | - Ping Zhao
- Key Laboratory of Ministry of Education for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Southwest Forestry University Kunming Yunnan 650224 PR China
| | - Xiaoqin Yang
- Key Laboratory of National Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, Southwest Forestry University Kunming Yunnan 650224 PR China
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Jiang H, Zhou L, Wang Y, Liu G, Peng S, Yu W, Tian Y, Liu J, Liu W. Inhibition of cinnamic acid and its derivatives on polyphenol oxidase: Effect of inhibitor carboxyl group and system pH. Int J Biol Macromol 2024; 259:129285. [PMID: 38211907 DOI: 10.1016/j.ijbiomac.2024.129285] [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: 09/02/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/13/2024]
Abstract
Phenolic acids are promising inhibitors of polyphenol oxidase (PPO), but the effects of carboxyl group and pH on their inhibition effects are still unclear. In this study, methyl cinnamate, cinnamic acid and 4-carboxycinnamic acid were investigated by their inhibitory effects with pH varied from 6.8 to 5.0. Results showed that 4-carboxycinnamic acid had the strongest inhibitory effect on PPO, followed by cinnamic acid and methyl cinnamate. Acidic pH enhanced the inhibitory effects of cinnamic acid and its derivatives on PPO, and the enhancement degree, IC50 and Ki declining degree were followed as 4-carboxycinnamic acid > cinnamic acid > methyl cinnamate. Methyl cinnamate exhibited competitive inhibition on PPO, while cinnamic acid and 4-carboxycinnamic acid exhibited mixed-type inhibition. Inhibitors induced slight changes in the secondary and tertiary structures of PPO, which were enhanced by acidic pH. Molecular docking results showed that 4-carboxycinnamic acid exhibited the strongest binding ability, and the main interaction forces were around carboxyl groups, and acidic pH enhanced the binding effect through more interactions and lower binding energy. This study could provide new insights into industrial application of cinnamic acid and its derivatives for the control of enzymatic browning of fruits and vegetables.
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Affiliation(s)
- Hongwei Jiang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Lei Zhou
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
| | - Yue Wang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Guangxian Liu
- Institute of Agricultural Products Processing, Jiangxi Academy of Agricultural Sciences, Nanchang, Jiangxi 330200, China
| | - Shengfeng Peng
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Wenzhi Yu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Yuqing Tian
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Junping Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Wei Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China; National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, China
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Jung S, Woo SY, Park MH, Kim DY, Lee SU, Oh SR, Kim MO, Lee J, Ryu HW. Potent inhibition of human tyrosinase inhibitor by verproside from the whole plant of Pseudolysimachion rotundum var. subintegrum. J Enzyme Inhib Med Chem 2023; 38:2252198. [PMID: 37649388 PMCID: PMC10472861 DOI: 10.1080/14756366.2023.2252198] [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: 05/18/2023] [Revised: 08/05/2023] [Accepted: 08/21/2023] [Indexed: 09/01/2023] Open
Abstract
Affinity-based ultrafiltration-mass spectrometry coupled with ultraperformance liquid chromatography-quadrupole time-of-flight mass spectrometry was utilised for the structural identification of direct tyrosinase ligands from a crude Pseudolysimachion rotundum var. subintegrum extract. False positives were recognised by introducing time-dependent inhibition in the control for comparison. The P. rotundum extract contained nine main metabolites in the UPLC-QTOF-MS chromatogram. However, four metabolites were reduced after incubation with tyrosinase, indicating that these metabolites were bound to tyrosinase. The IC50 values of verproside (1) were 31.2 µM and 197.3 µM for mTyr and hTyr, respectively. Verproside showed 5.6-fold higher efficacy than that of its positive control (kojic acid in hTyr). The most potent tyrosinase inhibitor, verproside, features a 3,4-dihydroxybenzoic acid moiety on the iridoid glycoside and inhibits tyrosinase in a time-dependent and competitive manner. Among these three compounds, verproside is bound to the active site pocket with a docking energy of -6.9 kcal/mol and four hydrogen bonding interactions with HIS61 and HIS85.
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Affiliation(s)
- Sunin Jung
- Korea Research Institute of Bioscience and Biotechnology, Cheong-ju si, Republic of Korea
- Department of CBRN Medicine Research, center for Special Military Medicine, Armed Forces Medical Research Institute, Daejeon, South Korea
| | - So-Yeun Woo
- Korea Research Institute of Bioscience and Biotechnology, Cheong-ju si, Republic of Korea
| | - Mi Hyeon Park
- Korea Research Institute of Bioscience and Biotechnology, Cheong-ju si, Republic of Korea
| | - Doo-Young Kim
- Korea Research Institute of Bioscience and Biotechnology, Cheong-ju si, Republic of Korea
| | - Su Ui Lee
- Korea Research Institute of Bioscience and Biotechnology, Cheong-ju si, Republic of Korea
| | - Sei-Ryang Oh
- Korea Research Institute of Bioscience and Biotechnology, Cheong-ju si, Republic of Korea
| | - Mun-Ock Kim
- Korea Research Institute of Bioscience and Biotechnology, Cheong-ju si, Republic of Korea
| | - Jinhyuk Lee
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
- Department of Bioinformatics, KRIBB School of Bioscience, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Hyung Won Ryu
- Korea Research Institute of Bioscience and Biotechnology, Cheong-ju si, Republic of Korea
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Li J, Min X, Zheng X, Wang S, Xu X, Peng J. Synthesis, Anti-Tyrosinase Activity, and Spectroscopic Inhibition Mechanism of Cinnamic Acid-Eugenol Esters. Molecules 2023; 28:5969. [PMID: 37630220 PMCID: PMC10460039 DOI: 10.3390/molecules28165969] [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: 08/02/2023] [Accepted: 08/05/2023] [Indexed: 08/27/2023] Open
Abstract
Tyrosinase plays crucial roles in mediating the production of melanin pigment; thus, its inhibitors could be useful in preventing melanin-related diseases. To find potential tyrosinase inhibitors, a series of cinnamic acid-eugenol esters (c1~c29) was synthesized and their chemical structures were confirmed by 1H NMR, 13C NMR, HRMS, and FT-IR, respectively. The biological evaluation results showed that all compounds c1~c29 exhibited definite tyrosinase inhibitory activity; especially, compound c27 was the strongest tyrosinase inhibitor (IC50: 3.07 ± 0.26 μM), being ~4.6-fold stronger than the positive control, kojic acid (IC50: 14.15 ± 0.46 μM). Inhibition kinetic studies validated compound c27 as a reversible mixed-type inhibitor against tyrosinase. Three-dimensional fluorescence and circular dichroism (CD) spectra results indicated that compound c27 could change the conformation and secondary structure of tyrosinase. Fluorescence-quenching results showed that compound c27 quenched tyrosinase fluorescence in the static manner with one binding site. Molecular docking results also revealed the binding interactions between compound c27 and tyrosinase. Therefore, cinnamic acid-eugenol esters, especially c27, could be used as lead compounds to find potential tyrosinase inhibitors.
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Affiliation(s)
- Jianping Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
| | - Xiaofeng Min
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
| | - Xi Zheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
| | - Shaohua Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China;
| | - Xuetao Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
| | - Jinbao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (X.Z.)
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Bayrakçeken Güven Z, Saracoglu I, Nagatsu A, Yilmaz MA, Basaran AA. Anti-tyrosinase and antimelanogenic effect of cinnamic acid derivatives from Prunus mahaleb L.: Phenolic composition, isolation, identification and inhibitory activity. JOURNAL OF ETHNOPHARMACOLOGY 2023; 310:116378. [PMID: 36924865 DOI: 10.1016/j.jep.2023.116378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The traditional use of Prunus species against skin diseases and especially for skin lightning cosmeceutical purposes is widespread in many cultures. Prunus mahaleb L. is a well known food plant and used in the baking industry for flavoring. The fruit kernels (endocarp) are used in India for hyperpigmentation. AIM OF THE STUDY To investigate the chemical composition with the antimelanogenesis effect of P. mahaleb seed and kernel extracts and isolated compounds. MATERIALS AND METHODS Isolation studies performed from the methanol extracts obtained from kernels and structures were determined using NMR and MS analysis. Antimelanogenesis effect was determined by mushroom tyrosinase assay, cellular tyrosinase assay and melanin content assay using B16F10 murine melanoma cells. RESULTS Five cinnamic acid derivatives were isolated and their structures (2-O-β-glucopyranosyloxy-4-methoxy-hydrocinnamic acid (1), cis-melilotoside (2), dihydromelilotoside (3), trans-melilotoside (4), 2-O-β-glucosyloxy-4-methoxy trans-cinnamic acid (5)) were elucidated using advanced spectroscopic methods. Mushroom tyrosinase enzyme inhibition of extracts, fractions and pure compounds obtained from P. mahaleb kernels were investigated and structure-activity relationship revealed. According to a detailed, comprehensive and validated LC-MS/MS technique analysis, vanilic acid (41.407 mg/g), protocatechuic acid (8.992 mg/g) and ferulic acid (4.962 mg/g) in the kernel ethylacetate fraction; quinic acid (14.183 mg/g), fumaric acid (8.349 mg/g) and aconitic acid (5.574 mg/g) were found as major phenolic compounds in the water fraction. The correlation of trace element copper content in extracts and fractions with mushroom enzyme activity was determined. By examining the enzyme kinetics of the compounds with effective cinnamic acid derivatives, inhibition types and enzyme binding constants Ki were calculated. Compounds 1,3 and 5 exhibited high noncompetitive tyrosinase inhibitory activity against L-tyrosine substrates, with IC50 values of 0.22, 0.31 and 0.37 mM respectively. In addition compounds 1, 3 and 5 showed dose-dependent inhibitory effects on intracellular tyrosinase and melanin levels in α-melanocyte-stimulating hormone (α-MSH)-induced B16F10 melanoma cells. CONCLUSIONS Potent tyrosinase inhibitory compounds and extracts of P. mahaleb kernels suggest that it could be a new, non-toxic and inexpensive resource for the cosmeceutical industry and in skin diseases associated with hyperpigmentation.
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Affiliation(s)
- Zühal Bayrakçeken Güven
- Hacettepe University, Faculty of Pharmacy, Department of Pharmacognosy, Ankara, Turkey; Erzincan Binali Yıldırım University, Faculty of Pharmacy, Department of Pharmacognosy, Erzincan, Turkey.
| | - Iclal Saracoglu
- Hacettepe University, Faculty of Pharmacy, Department of Pharmacognosy, Ankara, Turkey
| | - Akito Nagatsu
- Kinjo Gakuin University, College of Pharmacy, Department of Pharmacognosy, Nagoya, Japan
| | - Mustafa Abdullah Yilmaz
- Dicle University, Faculty of Pharmacy, Department of Analytical Chemistry, Diyarbakir, Turkey
| | - A Ahmet Basaran
- Baskent University, Faculty of Pharmacy, Department of Pharmacognosy, Ankara, Turkey
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Dini I, Mancusi A. Food Peptides for the Nutricosmetic Industry. Antioxidants (Basel) 2023; 12:antiox12040788. [PMID: 37107162 PMCID: PMC10135249 DOI: 10.3390/antiox12040788] [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: 02/27/2023] [Revised: 03/18/2023] [Accepted: 03/21/2023] [Indexed: 04/29/2023] Open
Abstract
In recent years, numerous reports have described bioactive peptides (biopeptides)/hydrolysates produced from various food sources. Biopeptides are considered interesting for industrial application since they show numerous functional properties (e.g., anti-aging, antioxidant, anti-inflammatory, and antimicrobial properties) and technological properties (e.g., solubility, emulsifying, and foaming). Moreover, they have fewer side effects than synthetic drugs. Nevertheless, some challenges must be overcome before their administration via the oral route. The gastric, pancreatic, and small intestinal enzymes and acidic stomach conditions can affect their bioavailability and the levels that can reach the site of action. Some delivery systems have been studied to avoid these problems (e.g., microemulsions, liposomes, solid lipid particles). This paper summarizes the results of studies conducted on biopeptides isolated from plants, marine organisms, animals, and biowaste by-products, discusses their potential application in the nutricosmetic industry, and considers potential delivery systems that could maintain their bioactivity. Our results show that food peptides are environmentally sustainable products that can be used as antioxidant, antimicrobial, anti-aging, and anti-inflammatory agents in nutricosmetic formulations. Biopeptide production from biowaste requires expertise in analytical procedures and good manufacturing practice. It is hoped that new analytical procedures can be developed to simplify large-scale production and that the authorities adopt and regulate use of appropriate testing standards to guarantee the population's safety.
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Affiliation(s)
- Irene Dini
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
| | - Andrea Mancusi
- Department of Food Microbiology, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Via Salute 2, 80055 Portici, Italy
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Shojazadeh T, Zolghadr L, JafarKhani S, Gharaghani S, Farasat A, Piri H, Gheibi N. Biomolecular interactions and binding dynamics of inhibitor arachidonic acid, with tyrosinase enzyme. J Biomol Struct Dyn 2023; 41:1378-1387. [PMID: 34974821 DOI: 10.1080/07391102.2021.2020167] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Hyperpigmentation is a disorder caused by increased melanin deposition and changes in skin pigmentation. Inhibition of tyrosinase activity contributes to the control of food browning and skin pigmentation diseases. The effects of arachidonic acid (AA) on tyrosinase activity were examined using different spectroscopy methods including UV-VIS spectrophotometry, fluorescence spectroscopy, circular dichroism (CD) differential scanning calorimetry, and molecular dynamics (MD) simulations. Based on the kinetic results, arachidonic acid showed mixed-type of inhibition with Ki = 4.7 µM. Fluorescence and CD studies showed changes of secondary and tertiary structures of enzyme and a reduction of α-helix* amino acids after its incubation with different concentrations of AA, which is also confirmed by DSSP analysis. In addition, differential scanning calorimetry (DSC) studies showed a decrease in thermodynamic stability of enzyme from Tm = 338.65k for sole enzyme after incubation with AA in comparison with complex enzyme with Tm= 334.26k, ΔH =7.52 kJ/mol, and ΔS = 0.15 kJ/mol k. Based on the theoretical methods, it was found that the interaction between enzyme and AA follows an electrostatic manner with ΔG = -8.314 kJ/mol and ΔH = -12.9 kJ/mol. The MD results showed the lowest flexibility in the complex amino acids and minimal fluctuations in AA interaction with tyrosinase in Residue 240 to 260 and 66 to 80. Thus, AA inhibitory and structural and thermodynamic instability of tyrosinase supported advantages of this fatty acid for prevention of medical hyperpigmentation. Therefore, it is a good candidate for cosmetic applications. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Tahereh Shojazadeh
- Department of Clinical Biochemistry and Genetic, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Leila Zolghadr
- Department of Chemistry, Imam Khomeini International University Qazvin, Qazvin, Iran
| | - Saeed JafarKhani
- Division of Biomedical Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.,Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Sajjad Gharaghani
- Laboratory of Bioinformatics and Drug Design, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Alireza Farasat
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Hossein Piri
- Cellular and Molecular Research Center, Qazvin University of Medical Sciences, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran.,Department of Biochemistry and Genetics, School of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Nematollah Gheibi
- Cellular and Molecular Research Center, Research Institute for Prevention of Non-Communicable Diseases, Qazvin University of Medical Sciences, Qazvin, Iran
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Deng H, Xu Q, Guo HY, Huang X, Chen F, Jin L, Quan ZS, Shen QK. Application of cinnamic acid in the structural modification of natural products: A review. PHYTOCHEMISTRY 2023; 206:113532. [PMID: 36470328 DOI: 10.1016/j.phytochem.2022.113532] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/24/2022] [Accepted: 11/26/2022] [Indexed: 06/17/2023]
Abstract
Natural products can generally exhibit a variety of biological activities, but most show mediocre performance in preliminary activity evaluation. Natural products often require structural modification to obtain promising lead compounds. Cinnamic acid (CA) is readily available and has diverse biological activities and low cytotoxicity. Introducing CA into natural products may improve their performance, enhance biological activity, and reduce toxic side effect. Herein, we aimed to discuss related applications of CA in the structural modification of natural products and provide a theoretical basis for future derivatization and drug development of natural products. Published articles, web databases (PubMed, Science Direct, SCI Finder, and CNKI), and clinical trial websites (https://clinicaltrials.gov/) related to natural products and CA derivatives were included in the discussion. Based on the inclusion criteria, 128 studies were selected and discussed herein. Screening natural products of CA derivatives allowed for classification by their biological activities. The full text is organized according to the biological activities of the derivatives, with the following categories: anti-tumor, neuroprotective, anti-diabetic, anti-microbial, anti-parasitic, anti-oxidative, anti-inflammatory, and other activities. The biological activity of each CA derivative is discussed in detail. Notably, most derivatives exhibited enhanced biological activity and reduced cytotoxicity compared with the lead compound. CA has various advantages and can be widely used in the synthesis of natural product derivatives to enhance the properties of drug candidates or lead compounds.
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Affiliation(s)
- Hao Deng
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Qian Xu
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Hong-Yan Guo
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Xing Huang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Fener Chen
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, China
| | - Lili Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China
| | - Zhe-Shan Quan
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China.
| | - Qing-Kun Shen
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, College of Pharmacy, Yanbian University, Yanji, 133002, China.
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Elucidating the Role of Santalol as a Potent Inhibitor of Tyrosinase: In Vitro and In Silico Approaches. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27248915. [PMID: 36558055 PMCID: PMC9786741 DOI: 10.3390/molecules27248915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/24/2022] [Accepted: 11/29/2022] [Indexed: 12/23/2022]
Abstract
This research work focuses on the potential application of an organic compound, santalol, obtained from santalum album, in the inhibition of the enzyme tyrosinase, which is actively involved in the biosynthesis of melanin pigment. Over-production of melanin causes undesirable pigmentation in humans as well as other organisms and significantly downgrades their aesthetic value. The study is designed to explain the purification of tyrosinase from the mushroom Agaricus bisporus, followed by activity assays and enzyme kinetics to give insight into the santalol-modulated tyrosinase inhibition in a dose-dependent manner. The multi-spectroscopic techniques such as UV-vis, fluorescence, and isothermal calorimetry are employed to deduce the efficiency of santalol as a potential candidate against tyrosinase enzyme activity. Experimental results are further verified by molecular docking. Santalol, derived from the essential oils of santalum album, has been widely used as a remedy for skin disorders and a potion for a fair complexion since ancient times. Based on enzyme kinetics and biophysical characterization, this is the first scientific evidence where santalol inhibits tyrosinase, and santalol may be employed in the agriculture, food, and cosmetic industries to prevent excess melanin formation or browning.
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Uto T, Ohta T, Nakayama E, Nakagawa M, Hatada M, Shoyama Y. Bioassay-guided Fractionation of Clove Buds Extract Identifies Eugenol as Potent Melanogenic Inducer in Melanoma Cells. J Oleo Sci 2022; 71:1403-1412. [PMID: 36047244 DOI: 10.5650/jos.ess22157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Clove, a dried flower buds of Syzygium aromaticum, is used in traditional medicine, for culinary purposes, and in essential oil production. In our preliminary screening of crude drugs used in Japanese Kampo formulas, a methanol (MeOH) extract of clove buds was found to exhibit a melanin induction. To date, the effects of clove buds or their constituents on the activation of melanogenesis remain unclear. Thus, this study aimed to isolate active compounds from the MeOH extract of clove buds associated with melanin synthesis in melanoma cells and to investigate the molecular mechanism involved. The MeOH extract of clove buds increased melanin content in murine B16-F1 melanoma cells. To identify the active compounds responsible for melanin induction, the MeOH extract was suspended in water and successively partitioned using hexane, ethyl acetate (EtOAc), and n-butanol (n-BuOH). Comparative analysis revealed that the EtOAc fraction induced melanin synthesis. Bioassay-guided separation of the EtOAc fraction isolated three compounds including eugenol. The analysis of structure-activity relationships of eugenol and structurally related compounds indicated that eugenol was the most potent melanin inducer among the 11 compounds, and that a hydroxyl group at C-1 and a methoxy group at C-2 may contribute to melanin induction. Eugenol induced melanin synthesis in human HMV-II melanoma cells as well as in B16-F1 cells. Further analysis indicated that eugenol may invoke intracellular tyrosinase activity and expression of tyrosinase, tyrosinaserelated protein (TRP)-1, TRP-2, and microphthalmia-associated transcription factor (MITF). These results suggest that eugenol enhances melanin synthesis by upregulating the expression of MITF and subsequent expression of melanogenic enzymes, and that it may be a potent therapeutic agent for hypopigmentation.
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Affiliation(s)
- Takuhiro Uto
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Tomoe Ohta
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Eri Nakayama
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Mina Nakagawa
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Maki Hatada
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Yukihiro Shoyama
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
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13
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Huang GL, Liu TT, Ma JJ, Sun LX, Sui SY, Quan XY, Wang YN. Anti-polyphenol oxidase mechanism of oligomeric procyanidins and its application on browning control of “Baiyu” loquat during storage. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Bezerra França S, Carine Barros de Lima L, Rychard da Silva Cunha C, Santos Anunciação D, Ferreira da Silva-Júnior E, Ester de Sá Barreto Barros M, José da Paz Lima D. Larvicidal activity and in silico studies of cinnamic acid derivatives against Aedes aegypti (Diptera: Culicidae). Bioorg Med Chem 2021; 44:116299. [PMID: 34225166 DOI: 10.1016/j.bmc.2021.116299] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 06/19/2021] [Accepted: 06/21/2021] [Indexed: 11/28/2022]
Abstract
Cinnamic acid derivatives (CAD's) represent a great alternative in the search for insecticides against Aedes aegypti mosquitoes since they have antimicrobial and insecticide properties. Ae. aegypti is responsible for transmitting Dengue, Chikungunya, and Zika viruses, among other arboviruses associated with morbimortality, especially in developing countries. In view of this, in vitro analyses of n-substituted cinnamic acids and esters were performed upon 4th instar larvae (L4) of Ae. aegypti, as well as, molecular docking studies to propose a potential biological target towards this mosquitoes species. The larvicide assays proved that n-substituted ethyl cinnamates showed a more pronounced activity than their corresponding acids, in which p-chlorocinnamate (3j) presented a LC50 value of 8.3 µg/mL. Thusly, external morphologic alterations (rigid and elongated body, curved bowel, and translucent or darkened anal papillae) of mosquitoes' group exposed to compound 3j, were observed by microscopy. In addition, an analytical method was developed for the quantification of the most promising analog by using high-performance liquid chromatography with UV detection (HPLC-UV). Molecular docking studies suggested that the larvicide action is associated with inhibition of acetylcholinesterase (AChE) enzyme. Therefore, expanding the larvicidal study with the cinnamic acid derivatives against the vector Ae. aegypti is important for finding search for more effective larvicides and with lower toxicity, since they have already shown good larvicidal properties against Ae. aegypti.
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Affiliation(s)
- Saraliny Bezerra França
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, 57072-970 Maceio, AL, Brazil
| | - Luana Carine Barros de Lima
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, 57072-970 Maceio, AL, Brazil
| | - Cristhyan Rychard da Silva Cunha
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, 57072-970 Maceio, AL, Brazil
| | - Daniela Santos Anunciação
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, 57072-970 Maceio, AL, Brazil
| | - Edeildo Ferreira da Silva-Júnior
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, 57072-970 Maceio, AL, Brazil
| | - Maria Ester de Sá Barreto Barros
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, 57072-970 Maceio, AL, Brazil
| | - Dimas José da Paz Lima
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Avenida Lourival Melo Mota, 57072-970 Maceio, AL, Brazil.
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15
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Recent advances in the design and discovery of synthetic tyrosinase inhibitors. Eur J Med Chem 2021; 224:113744. [PMID: 34365131 DOI: 10.1016/j.ejmech.2021.113744] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 02/08/2023]
Abstract
Tyrosinase is a copper-containing metalloenzyme that is responsible for the rate-limiting catalytic step in the melanin biosynthesis and enzymatic browning. As a promising target, tyrosinase inhibitors can be used as skin whitening agents and food preservatives, thus having broad potential in the fields of food, cosmetics, agriculture and medicine. From 2015 to 2020, numerous synthetic inhibitors of tyrosinase have been developed to overcome the challenges of low efficacy and side effects. This review summarizes the enzyme structure and biological functions of tyrosinase and demonstrates the recent advances of synthetic tyrosinase inhibitors from the perspective of medicinal chemistry, providing a better understanding of the catalytic mechanisms and more effective tyrosinase inhibitors.
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16
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Chen J, Ran M, Wang M, Liu X, Liu S, Yu Y. Structure-activity relationships of antityrosinase and antioxidant activities of cinnamic acid and its derivatives. Biosci Biotechnol Biochem 2021; 85:1697-1705. [PMID: 33974002 DOI: 10.1093/bbb/zbab084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 05/01/2021] [Indexed: 12/17/2022]
Abstract
The related structure-activity relationships of cinnamic acid and its derivates have not been studied in details yet. Herein, antityrosinase and antioxidant activities of 18 compounds were evaluated. The results demonstrated that the substituents on the phenyl ring of cinnamic acid led to the enhancement of the inhibition on monophenolase and the weakening of the inhibition on diphenolase. Among these tested compounds, 9 was first discovered as a tyrosinase inhibitor in a reversible competitive manner with IC50 value of 68.6 ± 4.2 µm. Docking results demonstrated 9 located into the catalytic center of tyrosinase. Antioxidant assay indicated that only 1 hydroxyl group on the phenyl ring was not enough to possess the radical scavenging activity, and the number of hydroxyl groups may be more important. This study will be helpful in the development of new cinnamic acid derivates as tyrosinase inhibitors and antioxidants with higher efficacy.
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Affiliation(s)
- Jianmin Chen
- School of Pharmacy and Medical technology, Putian University, Fujian, China.,State Key Laboratory of Quality Research in Chinese Medicine and School of Pharmacy, Macau University of Science and Technology, Macau SAR, China
| | - Mengnan Ran
- School of Pharmacy and Medical technology, Putian University, Fujian, China
| | - Meixia Wang
- School of Pharmacy and Medical technology, Putian University, Fujian, China
| | - Xinying Liu
- School of Pharmacy and Medical technology, Putian University, Fujian, China
| | - Siwan Liu
- School of Pharmacy and Medical technology, Putian University, Fujian, China
| | - Yue Yu
- State Key Laboratory of Quality Research in Chinese Medicine and School of Pharmacy, Macau University of Science and Technology, Macau SAR, China
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17
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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: 39] [Impact Index Per Article: 13.0] [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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18
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Wu Y, Huo D, Chen G, Yan A. SAR and QSAR research on tyrosinase inhibitors using machine learning methods. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2021; 32:85-110. [PMID: 33517778 DOI: 10.1080/1062936x.2020.1862297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 12/07/2020] [Indexed: 06/12/2023]
Abstract
Tyrosinase is a key rate-limiting enzyme in the process of melanin synthesis, which is closely related to human pigmentation disorders. Tyrosinase inhibitors can down-regulate tyrosinase to effectively reduce melanin synthesis. In this work, we conducted structure-activity relationship (SAR) study on 1097 diverse mushroom tyrosinase inhibitors. We applied five kinds of machine learning methods to develop 15 classification models. Model 5B built by fully connected neural networks and ECFP4 fingerprints achieved the highest prediction accuracy of 91.36% and Matthews correlation coefficient (MCC) of 0.81 on the test set. The applicability domains (AD) of classification models were defined by d S T D - P R O method. Moreover, we clustered the 1097 inhibitors into eight subsets by K-Means to figure out inhibitors' structural features. In addition, 10 quantitative structure-activity relationship (QSAR) models were constructed by four machine learning methods based on 813 inhibitors. Model 6 J, the best QSAR model, was developed by fully connected neural networks with 50 RDKit descriptors. It resulted in a coefficient of determination (r 2) of 0.770 and a root mean squared error (RMSE) of 0.482 on the test set. The AD of Model 6 J was visualized by Williams plot. The models built in this study can be obtained from the authors.
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Affiliation(s)
- Y Wu
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology , Beijing, P. R. China
| | - D Huo
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology , Beijing, P. R. China
| | - G Chen
- College of Life Science and Technology, Beijing University of Chemical Technology , Beijing, China
| | - A Yan
- State Key Laboratory of Chemical Resource Engineering Department of Pharmaceutical Engineering, Beijing University of Chemical Technology , Beijing, P. R. China
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19
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Liu XT, Liu TT, Xu HL, Chen QX, Wang Q. Inhibitory kinetics and bioactivities of Nuciferine and Methyl Ganoderate on Mucor miehei lipase and 3T3-L1 preadipocytes. Int J Biol Macromol 2020; 163:1719-1728. [PMID: 32971170 DOI: 10.1016/j.ijbiomac.2020.09.127] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 09/17/2020] [Accepted: 09/17/2020] [Indexed: 12/17/2022]
Abstract
In this study, inhibitory kinetics of Nuciferine and Methyl Ganoderate extrated from Lotus Leaves and Ganoderma lucidum on Mucor miehei Lipase were studied first. The molecular structure of Nuciferine and Methyl Ganoderate were determined. The inhibitory effects of two extracts on lipase were reversible, with the IC50 values of 0.194 and 0.332 mg/mL, respectively. The inhibition kinetic analysis by Lineweaver-Burk plots showed that they were a mixed-type inhibitor of lipase, with inhibition constants KI of 0.16 and 0.29 mg/mL, and KIS of 0.36 and 0.49 mg/mL, respectively. Results of spectral analysis showed that the UV absorption and the molecule fluorescence spectrum of the lipase hydrolyzate were significantly decreased after the inhibitor was added. The molecular docking further suggested that the interaction site between the active substance and inhibitor was located in an α-helix and a β-sheet of the lipase, and the lipase active site was interfered by the inhibitor near the cap structure. In addition, the proliferation and differentiation of 3 T3-L1 preadipocytes were inhibited by two extracts. Total triglycerides and cholesterol were significantly reduced in the cells. The results confirmed that Nuciferine and Methyl Ganoderate can be used as potential obesity treatment drugs.
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Affiliation(s)
- Xiao-Tian Liu
- School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Tian-Tian Liu
- School of Life Sciences, Xiamen University, Xiamen 361005, China; Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Hui-Long Xu
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, China
| | - Qing-Xi Chen
- School of Life Sciences, Xiamen University, Xiamen 361005, China.
| | - Qin Wang
- School of Life Sciences, Xiamen University, Xiamen 361005, China.
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20
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Taslimi P. Evaluation of in vitro inhibitory effects of some natural compounds on tyrosinase activity and molecular docking study: Antimelanogenesis potential. J Biochem Mol Toxicol 2020; 34:e22566. [PMID: 32614502 DOI: 10.1002/jbt.22566] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 05/29/2020] [Accepted: 06/17/2020] [Indexed: 01/28/2023]
Abstract
Tyrosinase enzyme is a functional oxidase that is extensively divided in nature. It is the main enzyme in melanin synthesis and is also involved in designating the color of mammalian hair and skin. Additionally, it is accountable for the unfavorable enzymatic browning that happens in plant-derived foods, limiting the shelf-life of new-cut crops with the resultant economic harm. Recently, there has been a remarkable concern to study the inhibitory activity of the tyrosinase enzyme and some inhibitory molecules isolated from natural sources. For tyrosinase enzyme, afzelin, narcissoside, justiciresinol, thalassiolin B, carpachromene, neobavaisoflavone, and kojic acid (as standard) as natural phenols have IC50 values in the range of 2.37-7.90 µM. Theoretical methods, such as gaussian software program and molecular modeling, were used to compare the biological and chemical activity values of molecules. To compare the biochemical and chemical activity values of molecules, chemical activities with quantum chemical parameters, and biological activities against tyrosinase with the ID of 5M8L molecules were investigated.
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Affiliation(s)
- Parham Taslimi
- Department of Biotechnology, Faculty of Science, Bartin University, Bartin, Turkey
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21
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Xu XT, Deng XY, Chen J, Liang QM, Zhang K, Li DL, Wu PP, Zheng X, Zhou RP, Jiang ZY, Ma AJ, Chen WH, Wang SH. Synthesis and biological evaluation of coumarin derivatives as α-glucosidase inhibitors. Eur J Med Chem 2020; 189:112013. [DOI: 10.1016/j.ejmech.2019.112013] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 12/26/2019] [Accepted: 12/26/2019] [Indexed: 12/13/2022]
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22
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Zhao Z, Liu G, Meng Y, Tian J, Chen X, Shen M, Li Y, Li B, Gao C, Wu S, Li C, He X, Jiang R, Qian M, Zheng X. Synthesis and anti-tyrosinase mechanism of the substituted vanillyl cinnamate analogues. Bioorg Chem 2019; 93:103316. [DOI: 10.1016/j.bioorg.2019.103316] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/29/2019] [Accepted: 09/25/2019] [Indexed: 12/21/2022]
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23
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Zolghadri S, Bahrami A, Hassan Khan MT, Munoz-Munoz J, Garcia-Molina F, Garcia-Canovas F, Saboury AA. A comprehensive review on tyrosinase inhibitors. J Enzyme Inhib Med Chem 2019; 34:279-309. [PMID: 30734608 PMCID: PMC6327992 DOI: 10.1080/14756366.2018.1545767] [Citation(s) in RCA: 525] [Impact Index Per Article: 105.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/04/2018] [Accepted: 11/05/2018] [Indexed: 12/17/2022] Open
Abstract
Tyrosinase is a multi-copper enzyme which is widely distributed in different organisms and plays an important role in the melanogenesis and enzymatic browning. Therefore, its inhibitors can be attractive in cosmetics and medicinal industries as depigmentation agents and also in food and agriculture industries as antibrowning compounds. For this purpose, many natural, semi-synthetic and synthetic inhibitors have been developed by different screening methods to date. This review has focused on the tyrosinase inhibitors discovered from all sources and biochemically characterised in the last four decades.
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Affiliation(s)
- Samaneh Zolghadri
- Department of Biology, Jahrom Branch, Islamic Azad University, Jahrom, Iran
| | - Asieh Bahrami
- Department of Biology, Jahrom Branch, Islamic Azad University, Jahrom, Iran
| | | | - J. Munoz-Munoz
- Group of Microbiology, Department of Applied Sciences, Northumbria University at Newcastle, Newcastle Upon Tyne, UK
| | - F. Garcia-Molina
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - F. Garcia-Canovas
- GENZ-Group of Research on Enzymology, Department of Biochemistry and Molecular Biology-A, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Espinardo, Murcia, Spain
| | - Ali Akbar Saboury
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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24
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Busch A, Deckena M, Almeida-Trapp M, Kopischke S, Kock C, Schüssler E, Tsiantis M, Mithöfer A, Zachgo S. MpTCP1 controls cell proliferation and redox processes in Marchantia polymorpha. THE NEW PHYTOLOGIST 2019; 224:1627-1641. [PMID: 31433873 DOI: 10.1111/nph.16132] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 07/26/2019] [Indexed: 05/19/2023]
Abstract
TCP transcription factors are key regulators of angiosperm cell proliferation processes. It is unknown whether their regulatory growth capacities are conserved across land plants, which we examined in liverworts, one of the earliest diverging land plant lineages. We generated knockout mutants for MpTCP1, the single TCP-P clade gene in Marchantia polymorpha, and characterized its function by conducting cell proliferation and morphological analyses as well as messenger RNA expression, transcriptome, chemical, and DNA binding studies. Mptcp1ge lines show a reduced vegetative thallus growth and extra tissue formation in female reproductive structures. Additionally, mutant plants reveal increased hydrogen peroxide (H2 O2 ) levels and an enhanced pigmentation in the thallus caused by formation of secondary metabolites, such as aminochromes. MpTCP1 proteins interact redox dependently with DNA and regulate the expression of a comprehensive redox network, comprising enzymes involved in H2 O2 metabolism. MpTCP1 regulates Marchantia growth in a context-dependent manner. Redox sensitivity of the DNA binding capacity of MpTCP1 proteins provides a mechanism to respond to altered redox conditions. Our data suggest that MpTCP1 activity could thereby have contributed to diversification of land plant morphologies and to adaptations to abiotic and biotic challenges, as experienced by liverworts during early land plant colonization.
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Affiliation(s)
- Andrea Busch
- Botany, University of Osnabrück, Osnabrück, 49076, Germany
| | - Marek Deckena
- Botany, University of Osnabrück, Osnabrück, 49076, Germany
| | | | | | - Cilian Kock
- Botany, University of Osnabrück, Osnabrück, 49076, Germany
| | | | - Miltos Tsiantis
- Max Planck Institute for Plant Breeding Research, Cologne, 50829, Germany
| | - Axel Mithöfer
- Max Planck Institute for Chemical Ecology, Jena, 07745, Germany
| | - Sabine Zachgo
- Botany, University of Osnabrück, Osnabrück, 49076, Germany
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Yang Y, Sun X, Ni H, Du X, Chen F, Jiang Z, Li Q. Identification and Characterization of the Tyrosinase Inhibitory Activity of Caffeine from Camellia Pollen. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12741-12751. [PMID: 31659899 DOI: 10.1021/acs.jafc.9b04929] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Tyrosinase inhibitors are important in cosmetic, medical, and food industries due to their regulation of melanin production. A tyrosinase inhibitor was purified from Camellia pollen using high-speed countercurrent chromatography and preparative high-performance liquid chromatography and was identified as caffeine by NMR and mass spectrometry. It showed strong mushroom tyrosinase inhibitory activity with an IC50 of 18.5 ± 2.31 μg/mL in a noncompetitive model. The caffeine did not interact with copper ions in the active center of the enzyme but could quench fluorescence intensity and change the secondary conformation of this tyrosinase. A molecular dynamics simulation showed that caffeine bound this tyrosinase via Lys379, Lys 376, Asp357, Glu356, Thr308, Gln307, Asp312, and Trp358, thus changing the binding sites of l-tyrosine and the loop conformation adjacent to the active center. In vitro cell model analysis revealed that caffeine exhibited significant inhibitory effects on both intracellular tyrosinase activity and melanin production of B16-F10 melanoma cells in a concentration-dependent manner. These comprehensive results suggest that caffeine is a strong tyrosinase inhibitor that has the potential to be developed as skin-whitening agents in the cosmetics and pharmaceutical industries or as antibrowning agents in the food industry.
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Affiliation(s)
- Yuanfan Yang
- College of Food and Biological Engineering , Jimei University , Xiamen , Fujian 361021 , China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen , Fujian 361021 , China
- Research Center of Food Biotechnology of Xiamen City , Xiamen , Fujian 361021 , China
| | - Xu Sun
- College of Food and Biological Engineering , Jimei University , Xiamen , Fujian 361021 , China
| | - Hui Ni
- College of Food and Biological Engineering , Jimei University , Xiamen , Fujian 361021 , China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen , Fujian 361021 , China
- Research Center of Food Biotechnology of Xiamen City , Xiamen , Fujian 361021 , China
| | - Xiping Du
- College of Food and Biological Engineering , Jimei University , Xiamen , Fujian 361021 , China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen , Fujian 361021 , China
- Research Center of Food Biotechnology of Xiamen City , Xiamen , Fujian 361021 , China
| | - Feng Chen
- College of Food and Biological Engineering , Jimei University , Xiamen , Fujian 361021 , China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen , Fujian 361021 , China
- Research Center of Food Biotechnology of Xiamen City , Xiamen , Fujian 361021 , China
- Department of Food, Nutrition and Packaging Sciences , Clemson University , Clemson , South Carolina 29634 , United States
| | - Zedong Jiang
- College of Food and Biological Engineering , Jimei University , Xiamen , Fujian 361021 , China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen , Fujian 361021 , China
- Research Center of Food Biotechnology of Xiamen City , Xiamen , Fujian 361021 , China
| | - Qingbiao Li
- College of Food and Biological Engineering , Jimei University , Xiamen , Fujian 361021 , China
- Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering , Xiamen , Fujian 361021 , China
- Research Center of Food Biotechnology of Xiamen City , Xiamen , Fujian 361021 , China
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26
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Ghafary S, Ranjbar S, Larijani B, Amini M, Biglar M, Mahdavi M, Bakhshaei M, Khoshneviszadeh M, Sakhteman A, Khoshneviszadeh M. Novel morpholine containing cinnamoyl amides as potent tyrosinase inhibitors. Int J Biol Macromol 2019; 135:978-985. [DOI: 10.1016/j.ijbiomac.2019.05.201] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/15/2019] [Accepted: 05/27/2019] [Indexed: 01/19/2023]
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27
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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: 12] [Impact Index Per Article: 2.4] [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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28
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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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29
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Sheng Z, Ge S, Xu X, Zhang Y, Wu P, Zhang K, Xu X, Li C, Zhao D, Tang X. Design, synthesis and evaluation of cinnamic acid ester derivatives as mushroom tyrosinase inhibitors. MEDCHEMCOMM 2018; 9:853-861. [PMID: 30108974 PMCID: PMC6071719 DOI: 10.1039/c8md00099a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/23/2018] [Indexed: 01/20/2023]
Abstract
Tyrosinase is a key enzyme in melanin biosynthesis, and is also involved in the enzymatic browning of plant-derived foods. Tyrosinase inhibitors are very important in medicine, cosmetics and agriculture. In order to develop more active and safer tyrosinase inhibitors, an efficient approach is to modify natural product scaffolds. In this work, two series of novel tyrosinase inhibitors were designed and synthesized by the esterification of cinnamic acid derivatives with paeonol or thymol. Their inhibitory effects on mushroom tyrosinase were evaluated. Most of these compounds (IC50: 2.0 to 163.8 μM) are found to be better inhibitors than their parent compounds (IC50: 121.4 to 5925.0 μM). Among them, (E)-2-acetyl-5-methoxyphenyl-3-(4-hydroxyphenyl)acrylate (5a), (E)-2-acetyl-5-methoxyphenyl-3-(4-methoxyphenyl)acrylate (5g) and (E)-2-isopropyl-5-methylphenyl-3-(4-hydroxyphenyl)acrylate (6a) showed strong inhibitory activities; the IC50 values were 2.0 μM, 8.3 μM and 10.6 μM, respectively, compared to the positive control, kojic acid (IC50: 32.2 μM). Analysis of the inhibition mechanism of 5a, 5g and 6a demonstrated that their inhibitory effects on tyrosinase are reversible. The inhibition kinetics, analyzed by Lineweaver-Burk plots, revealed that 5a acts as a non-competitive inhibitor while 5g and 6a are mixed-type inhibitors. Furthermore, docking experiments were carried out to study the interactions between 6a and mushroom tyrosinase.
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Affiliation(s)
- Zhaojun Sheng
- School of Chemical and Environmental Engineering , Wuyi University , Jiangmen 529020 , China . ;
- International Healthcare Innovation Institute (Jiangmen) , Jiangmen 529020 , China
| | - Siyuan Ge
- School of Chemical and Environmental Engineering , Wuyi University , Jiangmen 529020 , China . ;
| | - Ximing Xu
- Institute of Bioinformatics and Medical Engineering , School of Electrical and Information Engineering , Jiangsu University of Technology , Changzhou 213001 , China
| | - Yan Zhang
- School of Chemical and Environmental Engineering , Wuyi University , Jiangmen 529020 , China . ;
| | - Panpan Wu
- School of Chemical and Environmental Engineering , Wuyi University , Jiangmen 529020 , China . ;
- International Healthcare Innovation Institute (Jiangmen) , Jiangmen 529020 , China
| | - Kun Zhang
- School of Chemical and Environmental Engineering , Wuyi University , Jiangmen 529020 , China . ;
- International Healthcare Innovation Institute (Jiangmen) , Jiangmen 529020 , China
| | - Xuetao Xu
- School of Chemical and Environmental Engineering , Wuyi University , Jiangmen 529020 , China . ;
- International Healthcare Innovation Institute (Jiangmen) , Jiangmen 529020 , China
| | - Chen Li
- School of Chemical and Environmental Engineering , Wuyi University , Jiangmen 529020 , China . ;
| | - Denggao Zhao
- School of Chemical and Environmental Engineering , Wuyi University , Jiangmen 529020 , China . ;
- International Healthcare Innovation Institute (Jiangmen) , Jiangmen 529020 , China
| | - Xiaowen Tang
- School of Chemical and Environmental Engineering , Wuyi University , Jiangmen 529020 , China . ;
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