1
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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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2
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Theophylline Extracted from Fu Brick Tea Affects the Metabolism of Preadipocytes and Body Fat in Mice as a Pancreatic Lipase Inhibitor. Int J Mol Sci 2022; 23:ijms23052525. [PMID: 35269668 PMCID: PMC8910281 DOI: 10.3390/ijms23052525] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/04/2022] [Accepted: 02/06/2022] [Indexed: 02/06/2023] Open
Abstract
The dramatic increase in obesity is putting people under increasing pressure. Lipase inhibitors, as a kind of effective anti-obesity drug, have attracted more and more researchers’ attention in recent years because of their advantages of acting on the intestinal tract and having no side effects on the central nervous system. In this study, lipase inhibitor Fu Brick Theophylline (FBT) was screened based on enzyme molecular dynamics, and the inhibition mechanism of lipase inhibitors on obesity was analyzed and discussed at the cellular level and animal model level. We found that FBT had high inhibition effects of lipase with an IC50 of 1.02~0.03 μg/mL. Firstly, the laboratory used 3T3-L1 proadipocytes as models, flow cytometry was used to detect the effects of FBT on the cycle, apoptosis and intracellular ROS activity of proadipocytes. To study the contents of triglyceride, total cholesterol, related metabolites and related gene and protein expression in adipocytes. The results showed that FBT could reduce ROS production and inflammatory factor mRNA expression during cell differentiation. Secondly, by establishing the animal model of high-fat feed ob nutritional obese mice, the morphological observation and gene expression analysis of body weight, fat rate, adipocyte and hepatocyte metabolism of FBT obese mice were further discussed. It was proven that FBT can effectively reduce the degree of fatty liver, prevent liver fibrosis and fat accumulation, and improve the damage of mitochondrial membrane structure. This study provides a theoretical basis for the screening and clinical treatment of lipase inhibitors.
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3
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Hu Y, Zhou Y, Liu J, Wang Q, Lin J, Shi Y. Effect of 4‐methoxycinnamic acid on the postharvest browning of mushrooms (
Agaricus bisporus
). J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.14735] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yong‐Hua Hu
- School of Biological Science and Biotechnology Minnan Normal University Zhangzhou China
- Key Laboratory of Loquat Germplasm Innovation and Utilization (Putian University) Fujian Province University Putian China
| | - Yuan Zhou
- School of Life Sciences Xiamen University Xiamen China
| | - Jia‐Ai Liu
- School of Life Sciences Xiamen University Xiamen China
| | - Qin Wang
- School of Life Sciences Xiamen University Xiamen China
| | - Jian‐Cheng Lin
- Key Laboratory of Loquat Germplasm Innovation and Utilization (Putian University) Fujian Province University Putian China
| | - Yan Shi
- School of Life Sciences Xiamen University Xiamen China
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4
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Chen Y. Advances in fluorescent probes for detection and imaging of endogenous tyrosinase activity. Anal Biochem 2020; 594:113614. [DOI: 10.1016/j.ab.2020.113614] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 01/31/2020] [Accepted: 02/03/2020] [Indexed: 12/20/2022]
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5
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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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6
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Dong X, Wang S, Xu L, Lin J, Xu X. Inhibitory mechanism of Penicillin V on mushroom tyrosinase. Mol Biol Rep 2019; 47:967-975. [PMID: 31749120 DOI: 10.1007/s11033-019-05188-6] [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: 07/19/2019] [Accepted: 11/09/2019] [Indexed: 12/31/2022]
Abstract
Penicillin V is a bacteriolytic β-lactam antibiotic drug. In the present work, we investigated the inhibitory effect of Penicillin V on the activity of mushroom tyrosinase for the first time. The molecular mechanism for the inhibition of tyrosinase by Penicillin V was investigated by means of kinetics analysis, fluorescence quenching and molecular docking techniques. The results showed that Penicillin V could inhibit both monophenolase and diphenolase activities with IC50 of 16.6 ± 0.5 and 11.0 ± 0.2 mmol/L, respectively. The inhibitory type of Penicillin V on mushroom was mixed type, and the values of KI and KIS were 13.46 and 17.26 mmol/L, respectively. The fluorescence quenching and molecular docking showed that Penicillin V could form static interaction near the catalytic pocket of the enzyme to hinder the transportation of substrate to the active site, as well as reduce the copper plasticity for catalysis. Our results contributed to the usage of Penicillin V as a novel tyrosinase inhibitor with dual effect in field of antimicrobial and food preservation and could also provide guidance for the design of novel tyrosinase inhibitors.
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Affiliation(s)
- Xin Dong
- Tuolong Biotechnological Developmental Ltd Co., Guangzhou, 510800, China
| | - Shaoyu Wang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350116, China
| | - Lian Xu
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350116, China
| | - Juan Lin
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350116, China.
| | - Xinqi Xu
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350116, China.
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7
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Liu TT, Su WC, Chen QX, Shen DY, Zhuang JX. The inhibitory kinetics and mechanism of glycolic acid on lipase. J Biomol Struct Dyn 2019; 38:2021-2028. [PMID: 31315525 DOI: 10.1080/07391102.2019.1645732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Obesity is prone to cause a variety of chronic metabolic diseases, and it has aroused people's attention that the rapid increase in the global population of obese people in the past years. As a kind of weight-loss drug acting in the intestine, lipase inhibitor does not enter the bloodstream without producing central nervous side effects. Because they do not affect the metabolism system, lipase inhibitors and obesity have become one of the hot spots in recent years. Glycolic acid is a new substrate analog inhibitor with the value of the semi-inhibitory concentration of lipase is estimated to be 17.29 ± 0.14 mM. Using the plots of Lineweaver-Burk, the inhibition mechanism of lipase by glycolic acid was reversible and the inhibition type belongs to competitive inhibition with a KI value of 19.61 ± 0.26 mM. The inhibitory kinetics assay showed that the microscopic velocity constant k+0 of inhibition kinetics is 1.79 × 10-3 mM-1s-1, and k-0 is 0.73 × 10-3 s-1. The results of UV full-wavelength scanning on product cumulative, fluorescence quenching and molecular simulation also indicated that glycolic acid and substrate competitive with lipase by binding to Lys137. Thereby glycolic acid inhibiting the oxidation-catalyzed reaction and reducing the product of the enzyme and substrate. This adds a new direction for the search for lipase inhibitors and provides new ideas about the development of anti-obesity drugs.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Tian-Tian Liu
- School of Life Science, Xiamen University, Xiamen, China
| | - Wei-Chao Su
- School of Life Science, Xiamen University, Xiamen, China
| | - Qing-Xi Chen
- School of Life Science, Xiamen University, Xiamen, China
| | - Dong-Yan Shen
- Biobank, The First Affiliated Hospital, School of Medicine, Xiamen University, Xiamen, China
| | - Jiang-Xing Zhuang
- Institute of Neuroscience, School of Medicine, Xiamen University, Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Xiamen, Fujian, China
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8
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Huang Q, Chai WM, Ma ZY, Deng WL, Wei QM, Song S, Zou ZR, Peng YY. Antityrosinase mechanism of ellagic acid in vitro and its effect on mouse melanoma cells. J Food Biochem 2019; 43:e12996. [PMID: 31659813 DOI: 10.1111/jfbc.12996] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 06/30/2019] [Accepted: 07/08/2019] [Indexed: 11/27/2022]
Abstract
The activities of ellagic acid in inhibiting mushroom tyrosinase and cell proliferation were evaluated in this research. The results of enzyme kinetics indicated that ellagic acid could effectively inhibit tyrosinase activity. The value of the semi-inhibitory rate (IC50 ) was 0.2 ± 0.05 mM. Ellagic acid inhibited tyrosinase activity in a reversible manner and was a mixed tyrosinase inhibitor. Furthermore, ellagic acid had a good inhibitory effect on the proliferation of mouse melanoma B16 cells and could induce apoptosis. The results acquired from fluorescence spectroscopy revealed that the interaction of ellagic acid with tyrosinase depended on hydrogen bond and electrostatic force. In addition, computational docking showed that ellagic acid interacted with amino acid residues of tyrosinase (Asn19 and Lys372) by hydrogen bond and produced electrostatic interaction with amino residue Lys18. PRACTICAL APPLICATIONS: In the present research, the antityrosinase mechanism of ellagic acid and its effect on mouse melanoma cells were investigated. This study suggested that ellagic acid had a strong inhibitory activity against tyrosinase and cell proliferation,which laid an experimental foundation for the development of new drugs and whitening products. The combined multispectral methods used in this research can be applied to the screening of other antityrosinase inhibitors, further promoting the development and utilization of tyrosinase inhibitors.
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Affiliation(s)
- Qian Huang
- College of Life Science, and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, China
| | - Wei-Ming Chai
- College of Life Science, and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, China
| | - Zuo-Yuan Ma
- College of Life Science, and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, China
| | - Wei-Liang Deng
- College of Life Science, and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, China
| | - Qi-Ming Wei
- College of Life Science, and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, China
| | - Shuang Song
- College of Life Science, and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, China
| | - Zheng-Rong Zou
- College of Life Science, and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, China
| | - Yi-Yuan Peng
- College of Life Science, and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, China
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9
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Inhibitory mechanism and molecular analysis of furoic acid and oxalic acid on lipase. Int J Biol Macromol 2018; 120:1925-1934. [DOI: 10.1016/j.ijbiomac.2018.09.150] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 09/14/2018] [Accepted: 09/24/2018] [Indexed: 01/25/2023]
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10
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PxAPN5 serves as a functional receptor of Cry2Ab in Plutella xylostella (L.) and its binding domain analysis. Int J Biol Macromol 2017; 105:516-521. [DOI: 10.1016/j.ijbiomac.2017.07.070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 01/12/2023]
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11
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Isolation and Purification of Condensed Tannin from the Leaves and Branches of Prunus cerasifera and Its Structure and Bioactivities. Appl Biochem Biotechnol 2017; 185:464-475. [PMID: 29181763 DOI: 10.1007/s12010-017-2635-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 10/16/2017] [Indexed: 10/18/2022]
Abstract
Prunus cerasifera has a rich resource and a weak utilization rate and its biological functions have been investigated. We found that the contents of total phenol (TP) in leaves and branches of Prunus cerasifera were 117.8 ± 8.8 and 100.04 ± 0.9 mg/g, respectively; the contents of soluble condensed tannin (SCT) were 73.95 ± 0.9 and 78.65 ± 4.1 mg/g, respectively; the structure of SCT containing afzelechin/epiafzelechin, catechin/epicatechin, and atechin/epicatechin as the main units and the SCT from leaves and branches exhibited better anti-tyrosinase and antioxidant activities. This study could clarify Prunus cerasifera condensed tannin resource availability and lay a theoretical foundation for its development as a natural antioxidant and tyrosinase inhibitor.
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12
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13
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Chai WM, Lin MZ, Song FJ, Wang YX, Xu KL, Huang JX, Fu JP, Peng YY. Rifampicin as a novel tyrosinase inhibitor: Inhibitory activity and mechanism. Int J Biol Macromol 2017; 102:425-430. [PMID: 28414110 DOI: 10.1016/j.ijbiomac.2017.04.058] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/11/2017] [Accepted: 04/12/2017] [Indexed: 01/07/2023]
Abstract
In this study, the inhibitory effect and mechanism of rifampicin on the activity of tyrosinase were investigated for developing a novel tyrosinase inhibitor. It was found to have a significant inhibition on the activity of tyrosinase (IC50=90±0.6μM). From the kinetics analysis, it was proved to be a reversible and noncompetitive type inhibitor of the enzyme with the KI value of 94±3.5μM. The results obtained from intrinsic fluorescence quenching indicated that rifampicin could interact with tyrosinase. In particular, the drastic decrease of fluorescence intensity was due to the formation of a rifampicin-enzyme complex in a static procedure which was mainly driven by hydrophobic forces and hydrogen bonding. Moreover, the ANS-binding fluorescence analysis suggested that rifampicin binding to tyrosinase changed the polarity of the hydrophobic regions. Molecular docking analysis further revealed that the hydrogen bonds were generated between rifampicin and amino residues Leu7, Ser52, and Glu107 in the B chain of the enzyme. And the hydrophobic forces produced through the interaction of rifampicin with B chain residues Pro9, Pro14, and Trp106. This work identified a novel tyrosinase inhibitor and potentially contributed to the usage of rifampicin as a potential hyperpigmentation drug.
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Affiliation(s)
- Wei-Ming Chai
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
| | - Mei-Zhen Lin
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Fang-Jun Song
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Ying-Xia Wang
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Kai-Li Xu
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Jin-Xin Huang
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Jian-Ping Fu
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Yi-Yuan Peng
- College of Life Science and Key Laboratory of Small Functional Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
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14
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15
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Inhibition kinetics and molecular simulation of p-substituted cinnamic acid derivatives on tyrosinase. Int J Biol Macromol 2017; 95:1289-1297. [DOI: 10.1016/j.ijbiomac.2016.11.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/12/2016] [Accepted: 11/09/2016] [Indexed: 11/18/2022]
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16
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17
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Kim JH, Yoon JY, Yang SY, Choi SK, Kwon SJ, Cho IS, Jeong MH, Ho Kim Y, Choi GS. Tyrosinase inhibitory components from Aloe vera and their antiviral activity. J Enzyme Inhib Med Chem 2016; 32:78-83. [PMID: 27778516 PMCID: PMC6010052 DOI: 10.1080/14756366.2016.1235568] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
A new compound, 9-dihydroxyl-2'-O-(Z)-cinnamoyl-7-methoxy-aloesin (1), and eight known compounds (2-9) were isolated from Aloe vera. Their structures were elucidated using 1D/2D nuclear magnetic resonance and mass spectra. Compound 9 exhibited reversible competitive inhibitory activity against the enzyme tyrosinase, with an IC50 value of 9.8 ± 0.9 µM. A molecular simulation revealed that compound 9 interacts via hydrogen bonding with residues His244, Thr261, and Val283 of tyrosinase. Additionally, compounds 3 and 7 were shown by half-leaf assays to exhibit inhibitory activity towards Pepper mild mottle virus.
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Affiliation(s)
- Jang Hoon Kim
- a Department of Horticultural and Crop Environment , National Institute of Horticultural and Herbal Science, RDA , Wanju , Republic of Korea
| | - Ju-Yeon Yoon
- a Department of Horticultural and Crop Environment , National Institute of Horticultural and Herbal Science, RDA , Wanju , Republic of Korea
| | - Seo Young Yang
- b College of Pharmacy, Chungnam National University , Daejeon , Republic of Korea
| | - Seung-Kook Choi
- a Department of Horticultural and Crop Environment , National Institute of Horticultural and Herbal Science, RDA , Wanju , Republic of Korea
| | - Sun Jung Kwon
- a Department of Horticultural and Crop Environment , National Institute of Horticultural and Herbal Science, RDA , Wanju , Republic of Korea
| | - In Sook Cho
- a Department of Horticultural and Crop Environment , National Institute of Horticultural and Herbal Science, RDA , Wanju , Republic of Korea
| | - Min Hee Jeong
- b College of Pharmacy, Chungnam National University , Daejeon , Republic of Korea
| | - Young Ho Kim
- b College of Pharmacy, Chungnam National University , Daejeon , Republic of Korea
| | - Gug Seoun Choi
- a Department of Horticultural and Crop Environment , National Institute of Horticultural and Herbal Science, RDA , Wanju , Republic of Korea
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18
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Zhou J, Shi W, Li L, Gong Q, Wu X, Li X, Ma H. Detection of Misdistribution of Tyrosinase from Melanosomes to Lysosomes and Its Upregulation under Psoralen/Ultraviolet A with a Melanosome-Targeting Tyrosinase Fluorescent Probe. Anal Chem 2016; 88:4557-64. [DOI: 10.1021/acs.analchem.6b00742] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jin Zhou
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wen Shi
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Lihong Li
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Qiuyu Gong
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaofeng Wu
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaohua Li
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Huimin Ma
- Beijing National Laboratory
for Molecular Sciences, Key Laboratory of Analytical Chemistry for
Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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19
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Xie J, Dong H, Yu Y, Cao S. Inhibitory effect of synthetic aromatic heterocycle thiosemicarbazone derivatives on mushroom tyrosinase: Insights from fluorescence, 1 H NMR titration and molecular docking studies. Food Chem 2016. [DOI: 10.1016/j.foodchem.2015.05.124] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Anantharaman A, Hemachandran H, Priya RR, Sankari M, Gopalakrishnan M, Palanisami N, Siva R. Inhibitory effect of apocarotenoids on the activity of tyrosinase: Multi-spectroscopic and docking studies. J Biosci Bioeng 2016; 121:13-20. [DOI: 10.1016/j.jbiosc.2015.05.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 04/21/2015] [Accepted: 05/12/2015] [Indexed: 01/17/2023]
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21
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Synthesis, structural elucidation and bioevaluation of 4-amino-1,2,4-triazole-3-thione’s Schiff base derivatives. Arch Pharm Res 2015; 39:161-171. [DOI: 10.1007/s12272-015-0688-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 11/18/2015] [Indexed: 12/21/2022]
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22
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Xing R, Wang F, Zheng A, Wang L, Fei D, Yu Y. Biological evaluation of two Keggin-type polyoxometalates containing glycine as mushroom tyrosinase inhibitors. Biotechnol Appl Biochem 2015; 63:746-750. [DOI: 10.1002/bab.1424] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 07/22/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Rui Xing
- College of Food and Bioengineering; Jimei University; Xiamen People's Republic of China
| | - Fang Wang
- College of Chemistry and Life Science; Quanzhou Normal College; Quanzhou People's Republic of China
| | - Aping Zheng
- College of Food and Bioengineering; Jimei University; Xiamen People's Republic of China
| | - Li Wang
- College of Food and Bioengineering; Jimei University; Xiamen People's Republic of China
| | - Dan Fei
- College of Food and Bioengineering; Jimei University; Xiamen People's Republic of China
| | - Yaping Yu
- College of Chemistry and Life Science; Quanzhou Normal College; Quanzhou People's Republic of China
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23
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Synthesis of Triazole Schiff's Base Derivatives and Their Inhibitory Kinetics on Tyrosinase Activity. PLoS One 2015; 10:e0138578. [PMID: 26422245 PMCID: PMC4589318 DOI: 10.1371/journal.pone.0138578] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 09/01/2015] [Indexed: 01/15/2023] Open
Abstract
In the present study, new Schiff’s base derivatives: (Z)-4-amino-5-(2-(3- fluorobenzylidene)hydrazinyl)-4H-1,2,4-triazole-3-thiol (Y1), (Z)-3-((2-(4-amino-5- mercapto-4H-1,2,4-triazol-3-yl)hydrazono)methyl)phenol (Y2), (Z)-2-((2-(4-amino-5- mercapto-4H-1,2,4-triazol-3-yl)hydrazono)methyl)phenol (Y3) and 3-((Z)-(2-(4- (((E)-3-hydroxybenzylidene)amino)-5-mercapto-4H-1,2,4-triazol-3-yl)hydrazono)methyl)phenol (Y4) were synthesized and their structures were characterized by LC-MS, IR and 1H NMR. The inhibitory effects of these compounds on tyrosinase activites were evaluated. Compounds Y1, Y2 and Y3 showed potent inhibitory effects with respective IC50 value of 12.5, 7.0 and 1.5 μM on the diphenolase activities. Moreover, the inhibition mechanisms were determined to be reversible and mixed types. Interactions of the compounds with tyrosinase were further analyzed by fluorescence quenching, copper interaction, and molecular simulation assays. The results together with the anti-tyrosinase activities data indicated that substitution on the second position of benzene ring showed superior ant-ityrosinase activities than that on third position, and that hydroxyl substitutes were better than fluorine substitutes. In addition, two benzene rings connecting to the triazole ring would produce larger steric hindrance, and affect the bonding between tyrosinase and inhibitors to decrease the inhibitory effects. The anti-tyrosinase effects of these compounds were in contrast to their antioxidant activities. In summary, this research will contribute to the development and design of antityrosinase agents.
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Xu XQ, Shi Y, Wu XB, Zhan XL, Zhou HT, Chen QX. Heat inactivation kinetics of Hypocrea orientalis β-glucosidase with enhanced thermal stability by glucose. Int J Biol Macromol 2015; 81:1012-8. [PMID: 26385504 DOI: 10.1016/j.ijbiomac.2015.09.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 09/12/2015] [Accepted: 09/12/2015] [Indexed: 01/12/2023]
Abstract
Thermal inactivation kinetics of Hypocrea orientalis β-glucosidase and effect of glucose on thermostability of the enzyme have been determined in this paper. Kinetic studies showed that the thermal inactivation was irreversible and first-order reaction. The microscopic rate constants for inactivation of free enzyme and substrate-enzyme complex were both determined, which suggested that substrates can protect β-glucosidase against thermal deactivation effectively. On the other hand, glucose was found to protect β-glucosidase from heat inactivation to remain almost whole activity below 70°C at 20mM concentration, whereas the apparent inactivation rate of BG decreased to be 0.3×10(-3)s(-1) in the presence of 5mM glucose, smaller than that of sugar-free enzyme (1.91×10(-3)s(-1)). The intrinsic fluorescence spectra results showed that glucose also had stabilizing effect on the conformation of BG against thermal denaturation. Docking simulation depicted the interaction mode between glucose and active residues of the enzyme to produce stabilizing effect.
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Affiliation(s)
- Xin-Qi Xu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Yan Shi
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Xiao-Bing Wu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Xi-Lan Zhan
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Han-Tao Zhou
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China.
| | - Qing-Xi Chen
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China.
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Cui Y, Liang G, Hu YH, Shi Y, Cai YX, Gao HJ, Chen QX, Wang Q. Alpha-substituted derivatives of cinnamaldehyde as tyrosinase inhibitors: inhibitory mechanism and molecular analysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:716-722. [PMID: 25547255 DOI: 10.1021/jf505469k] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Alpha-substituted derivatives of cinnamaldehyde (alpha-bromocinnamaldehyde, alpha-chlorocinnamaldehyde, and alpha-methylcinnamaldehyde) were used as inhibitors on mushroom tyrosinase. The result showed that three compounds can reduce both monophenolase and diphenolase activity on tyrosinase, and the inhibition was reversible. The IC50 values of alpha-bromocinnamaldehyde, alpha-chlorocinnamaldehyde, and alpha-methylcinnamaldehyde were 0.075, 0.140, and 0.440 mM on monophenolase and 0.049, 0.110, and 0.450 mM on diphenolase, respectively. The inhibition types and constants on diphenolase for these inhibitors were further studied. The molecular inhibition mechanisms of tyrosinase by the derivatives were investigated by UV-scanning study, fluorescence quenching, and molecular docking. These assays demonstrated that the derivatives could decrease the formation of o-quinones, and all derivatives were static quenchers of mushroom tyrosinase. Docking results implied that they could not form metal interactions with the copper ions of the enzyme, whereas they could interact with the amino acid residues of active site center. This research on alpha-substituted derivatives of cinnamaldehyde as tyrosinase inhibitors would lead to advances in the field of antityrosinase.
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Affiliation(s)
- Yi Cui
- State Key Laboratory of Cellular Stress Biology and Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University , Xiamen 361102, China
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Chen XX, Shi Y, Chai WM, Feng HL, Zhuang JX, Chen QX. Condensed tannins from Ficus virens as tyrosinase inhibitors: structure, inhibitory activity and molecular mechanism. PLoS One 2014; 9:e91809. [PMID: 24637701 PMCID: PMC3956756 DOI: 10.1371/journal.pone.0091809] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 02/14/2014] [Indexed: 12/02/2022] Open
Abstract
Condensed tannins from Ficus virens leaves, fruit, and stem bark were isolated and their structures characterized by 13C nuclear magnetic resonance spectrometry, high performance liquid chromatography electrospray ionization mass spectrometry, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. The results showed that the leaves, fruit, and stem bark condensed tannins were complex mixtures of homo- and heteropolymers of B-type procyanidins and prodelphinidins with degrees of polymerization up to hexamer, dodecamer, and pentadecamer, respectively. Antityrosinase activities of the condensed tannins were studied. The results indicated that the condensed tannins were potent tyrosinase inhibitors. The concentrations for the leaves, fruit, and stem bark condensed tannins leading to 50% enzyme activity were determined to be 131.67, 99.89, and 106.22 μg/ml on monophenolase activity, and 128.42, 43.07, and 74.27 μg/ml on diphenolase activity. The inhibition mechanism, type, and constants of the condensed tannins on the diphenolase activity were further investigated. The results indicated that the condensed tannins were reversible and mixed type inhibitors. Fluorescence quenching, copper interacting, and molecular docking techniques were utilized to unravel the molecular mechanisms of the inhibition. The results showed that the hydroxyl group on the B ring of the condensed tannins could chelate the dicopper irons of the enzyme. Moreover, the condensed tannins could reduce the enzyme product o-quinones into colourless compounds. These results would contribute to the development and design of antityrosinase agents.
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Affiliation(s)
- Xiao-Xin Chen
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China
| | - Yan Shi
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China
| | - Wei-Ming Chai
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China
| | - Hui-Ling Feng
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China
| | - Jiang-Xing Zhuang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, College of Medicine, Xiamen University, Xiamen, China
| | - Qing-Xi Chen
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, China
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Chen XX, Feng HL, Ding YM, Chai WM, Xiang ZH, Shi Y, Chen QX. Structure characterization of proanthocyanidins from Caryota ochlandra Hance and their bioactivities. Food Chem 2014; 155:1-8. [PMID: 24594146 DOI: 10.1016/j.foodchem.2014.01.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 01/05/2014] [Accepted: 01/06/2014] [Indexed: 11/26/2022]
Abstract
Proanthocyanidins (PAs) from Caryota ochlandra fruit pericarp and fruit flesh were characterized by (13)C nuclear magnetic resonance, high performance liquid chromatography-electrospray ionization mass spectrometry, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry techniques. The fruit pericarp and flesh PAs were complex mixtures of homo- and heteropolymers of B-type procyanidins and prodelphinidins both with degrees of polymerization up to dodecamer. Their antioxidant and antityrosinase activities were investigated. The fruit pericarp PAs exhibited potent antioxidant activity with IC50 values of 142.86 ± 1.53 and 80.51 ± 0.4 μg/ml for DPPH and ABTS free-radical scavenging assays; with FRAP value of 373.09 ± 5.02 mg ascorbic acid equivalent/g dry weight. Furthermore, the fruit pericarp PAs had antityrosinase activity while the fruit flesh PAs could be oxidized by tyrosinase. The structure and antioxidant activities of the C. ochlandra fruit PAs together with their effects on tyrosinase activity would lay scientific foundation for their utilization in food and nutrition industry.
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Affiliation(s)
- Xiao-Xin Chen
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Hui-Ling Feng
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Yu-Mei Ding
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Wei-Ming Chai
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Zhi-Hao Xiang
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China
| | - Yan Shi
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China.
| | - Qing-Xi Chen
- Key Lab of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China.
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