101
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Tang K, Jiang Y, Zhang H, Huang W, Xie Y, Deng C, Xu H, Song X, Xu H. Design, synthesis of Cinnamyl-paeonol derivatives with 1, 3-Dioxypropyl as link arm and screening of tyrosinase inhibition activity in vitro. Bioorg Chem 2020; 106:104512. [PMID: 33293056 DOI: 10.1016/j.bioorg.2020.104512] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 10/10/2020] [Accepted: 11/19/2020] [Indexed: 01/12/2023]
Abstract
This study aimed to obtain tyrosinase inhibitors for treating hyperpigmentation. A series of cinnamyl ester analogues were designed and synthesized with cinnamic acid (CA) and peaonol compounds. The safety, melanin content and inhibitory effects of all target compounds were evaluated. In the enzymatic activity test, the inhibitory rate of compounds 8, 13 and 14 had stronger inhibitory activity with the IC50 values of 20.7 μM, 13.98 μM and 15.16 μM, respectively than the positive drug kojic acid (IC50 with 30.83 μM). The cytotoxicity evaluation showed that compounds 13 and 14 have higher safety than the other compounds to the proliferation of B16F10 cells. The result of the melanocyte test supported that compound13 has stronger cellular tyrosinase inhibitory activity than kojic acid and arbutin at 100 μM and 200 μM. The enzyme kinetics mechanism revealed that compound 13 was a non-competitive inhibitor while compounds 8 and 14 were mixed inhibitors. For the experiments of melanin content and tyrosinase activity in the B16F10 melanona cells, the inhibition rates of compounds 8, 14 and 13 were with 19.62%, 20.59% and 23.83%, respectively. In addition, compound 13 revealed the highest inhibitory activity to tyrosinase in the melanocyte with inhibition rates of 23.83%, which was better than kojic acid and arbutin (19.21% and 20.45%) at the same concentration. In the anti-melanogenesis experiment, compounds 8 and 13 had better anti-melanin effects than kojic acid from 25 μM to 100 μM. In summary, the results indicated that compounds 8, 13 and 14 had better tyrosinase inhibitory activity and anti-melanogenesis activity. Especially, the compound 13 has potentiality to develop novel tyrosinase inhibitors and whitening agents. The docking studies results revealed that the functional group of compound 13 mostly depends on the phenolic hydroxyl moiety, and its hydroxyl group did not insert into the active site of tyrosinase, which was in agreement with the results of the kinetics study.
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Affiliation(s)
- Kai Tang
- Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Yi Jiang
- Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Huawei Zhang
- Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Wenli Huang
- Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Yundong Xie
- Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Chong Deng
- Shaanxi University of Chinese Medicine, Xianyang 712046, China.
| | - Hongbo Xu
- Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Xiaomei Song
- Shaanxi University of Chinese Medicine, Xianyang 712046, China
| | - Hong Xu
- Shaanxi University of Chinese Medicine, Xianyang 712046, China
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102
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Yu Q, Fan L. New insights into antityrosinase capacity and polyphenols of asparagus during hydrothermal treatments. Food Chem 2020; 326:126968. [DOI: 10.1016/j.foodchem.2020.126968] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 04/28/2020] [Accepted: 05/01/2020] [Indexed: 01/19/2023]
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103
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104
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105
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Aksoy M. A new insight into purification of polyphenol oxidase and inhibition effect of curcumin and quercetin on potato polyphenol oxidase. Protein Expr Purif 2020; 171:105612. [DOI: 10.1016/j.pep.2020.105612] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 02/21/2020] [Accepted: 02/21/2020] [Indexed: 11/28/2022]
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106
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Wang M, Chen J, Ye X, Liu D. In vitro inhibitory effects of Chinese bayberry (Myrica rubra Sieb. et Zucc.) leaves proanthocyanidins on pancreatic α-amylase and their interaction. Bioorg Chem 2020; 101:104029. [PMID: 32615466 DOI: 10.1016/j.bioorg.2020.104029] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/07/2020] [Accepted: 06/15/2020] [Indexed: 10/24/2022]
Abstract
Chinese bayberry leaves proanthocyanidins (BLPs) belongs to the prodelphinidin category with potent EGCG unit, whose inhibition effect on α-amylase and their interaction were investigated by in vitro digestion and enzyme kinetic analysis, multi fluorescence spectroscopies (fluorescence quenching, synchronous fluorescence, and three-dimensional fluorescence), circular dichroism spectra, Fourier transform infrared spectroscopy and in silico modelling. The results revealed that BLPs was a mixed inhibitor to α-amylase with the IC50 value of 3.075 ± 0.073 μg/mL. BLPs could lead to a static fluorescence quenching of α-amylase, mainly by means of interacting with amino acids (mainly Try and Tyr residues) in one site on α-amylase molecule under the action of hydrogen bonding and/or Van der Waals force. This interaction further induced the change of secondary conformational structure, functional group structure and hydrophobicity of α-amylase, thus resulting in lowering activity. Molecular docking simulated that this binding occurred in a cavity on the surface of the α-amylase molecule, and BLPs trimer showed a relatively high binding energy. The present study provided a new insight of BLPs as an α-amylase inhibitor, which could be considered in anti-diabetic therapy.
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Affiliation(s)
- Mengting Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, People's Republic of China.
| | - Jianchu Chen
- College of Biosystems Engineering and Food Science, Zhejiang University, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, People's Republic of China.
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, Zhejiang University, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, People's Republic of China.
| | - Donghong Liu
- College of Biosystems Engineering and Food Science, Zhejiang University, Zhejiang Key Laboratory for Agro-Food Processing, Fuli Institute of Food Science, Zhejiang R&D Center for Food Technology and Equipment, Hangzhou 310058, People's Republic of China; Ningbo Research Institute, Zhejiang University, Ningbo, 315100, People's Republic of China.
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107
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Ahmed MH, Aldesouki HM, Badria FA. Effect of phenolic compounds from the leaves of Psidium guajava on the activity of three metabolism-related enzymes. Biotechnol Appl Biochem 2020; 68:497-512. [PMID: 32432341 DOI: 10.1002/bab.1956] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 05/16/2020] [Indexed: 01/10/2023]
Abstract
Enzyme activity modulation by synthetic compounds provide strategies combining the inhibitory and therapeutic mode of action of the confirmed inhibitors. However, natural modulators could offer a valuable alternative for synthetic ones for the treatment of different chronic diseases (diabetes, hypertension, cancer); due to the numerous side effects of the latter. In vitro screening assays were conducted for Psidium guajava leaf methanolic extract against three metabolism-related enzymes; α-amylase, tyrosinase, and hyaluronidase. The obtained results showed that the examined extract retained weak and moderate multitarget inhibition against α-amylase, tyrosinase, and hyaluronidase, respectively; however, the leaf fractions exhibited stronger inhibitions for the three investigated enzymes. Fractionation of P. guajava leaf extract revealed that anthraquinones and ellagic acid are of the major active compounds with inhibitory activities for α-amylase, tyrosinase, and hyaluronidase. Kinetic studies showed that quinalizarin inhibition is competitive for both α-amylase and hyaluronidase, and ellagic acid inhibition for tyrosinase and hyaluronidase is competitive and un-competitive, respectively. The molecular docking studies of quinalizarin and ellagic acid with α-amylase, tyrosinase, and hyaluronidase showed high binding energies with different bonds stabilizing the ligand-protein complex. Compiling all obtained results led to conclude that both P. guajava leaf fractions, quinalizarin and ellagic acid, have multitarget activities with potential therapeutic applications in many metabolic disorders.
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Affiliation(s)
- Mohamed H Ahmed
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Hala M Aldesouki
- Department of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Farid A Badria
- Department of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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108
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Salehi B, Machin L, Monzote L, Sharifi-Rad J, Ezzat SM, Salem MA, Merghany RM, El Mahdy NM, Kılıç CS, Sytar O, Sharifi-Rad M, Sharopov F, Martins N, Martorell M, Cho WC. Therapeutic Potential of Quercetin: New Insights and Perspectives for Human Health. ACS OMEGA 2020; 5:11849-11872. [PMID: 32478277 PMCID: PMC7254783 DOI: 10.1021/acsomega.0c01818] [Citation(s) in RCA: 255] [Impact Index Per Article: 63.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 05/01/2020] [Indexed: 05/03/2023]
Abstract
Quercetin (Que) and its derivatives are naturally occurring phytochemicals with promising bioactive effects. The antidiabetic, anti-inflammatory, antioxidant, antimicrobial, anti-Alzheimer's, antiarthritic, cardiovascular, and wound-healing effects of Que have been extensively investigated, as well as its anticancer activity against different cancer cell lines has been recently reported. Que and its derivatives are found predominantly in the Western diet, and people might benefit from their protective effect just by taking them via diets or as a food supplement. Bioavailability-related drug-delivery systems of Que have also been markedly exploited, and Que nanoparticles appear as a promising platform to enhance their bioavailability. The present review aims to provide a brief overview of the therapeutic effects, new insights, and upcoming perspectives of Que.
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Affiliation(s)
- Bahare Salehi
- Student
Research Committee, School of Medicine, Bam University of Medical Sciences, Bam 44340847, Iran
| | - Laura Machin
- Institute
of Pharmacy and Food, University of Havana, Havana, Cuba
| | - Lianet Monzote
- Parasitology
Department, Institute of Medicine Tropical
Pedro Kourí, Havana, Cuba
| | - Javad Sharifi-Rad
- Phytochemistry
Research Center, Shahid Beheshti University
of Medical Sciences, Tehran 1991953381, Iran
| | - Shahira M. Ezzat
- Department
of Pharmacognosy, Faculty of Pharmacy, Cairo
University, Kasr El-Aini
Street, Cairo 11562, Egypt
- Department
of Pharmacognosy, Faculty of Pharmacy, October
University for Modern Sciences and Arts (MSA), 6th October 12566, Egypt
| | - Mohamed A. Salem
- Department
of Pharmacognosy, Faculty of Pharmacy, Menoufia
University, Gamal Abd
El Nasr st., Shibin Elkom, Menoufia 32511, Egypt
| | - Rana M. Merghany
- Department
of Pharmacognosy, National Research Centre, Giza 12622, Egypt
| | - Nihal M. El Mahdy
- Department
of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), 6th of October 12566, Egypt
| | - Ceyda Sibel Kılıç
- Department
of Pharmaceutical Botany, Faculty of Pharmacy, Ankara University, Ankara 06100, Turkey
| | - Oksana Sytar
- Department of Plant Biology Department, Institute of Biology, Taras Shevchenko National University of Kyiv, Volodymyrska str., 64, Kyiv 01033, Ukraine
- Department of Plant Physiology, Slovak
University of Agriculture, Nitra, A. Hlinku 2, Nitra 94976, Slovak Republic
| | - Mehdi Sharifi-Rad
- Department
of Medical Parasitology, Faculty of Medicine, Kerman University of Medical Sciences, Kerman 7616913555, Iran
| | - Farukh Sharopov
- Department of Pharmaceutical Technology, Avicenna Tajik State Medical University, Rudaki 139, Dushanbe 734003, Tajikistan
| | - Natália Martins
- Faculty of Medicine, University
of Porto, Porto 4200-319, Portugal
- Institute
for Research and Innovation in Health (i3S), University of Porto, Porto 4200-135, Portugal
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy,
and Centre
for Healthy Living, University of Concepción, Concepción 4070386, Chile
- Universidad de Concepción, Unidad
de Desarrollo Tecnológico,
UDT, Concepción 4070386, Chile
| | - William C. Cho
- Department
of Clinical Oncology, Queen
Elizabeth Hospital, 30
Gascoigne Road, Kowloon, Hong
Kong
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109
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110
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Angelis A, Mavros P, Nikolaou PE, Mitakou S, Halabalaki M, Skaltsounis L. Phytochemical analysis of olive flowers' hydroalcoholic extract and in vitro evaluation of tyrosinase, elastase and collagenase inhibition activity. Fitoterapia 2020; 143:104602. [PMID: 32353404 DOI: 10.1016/j.fitote.2020.104602] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 11/16/2022]
Abstract
Olea europaea L. is historically one of the most important trees of the Mediterranean countries. Increasing scientific interest regarding its fruits, leaves and olive oil has led to the elucidation of several phytochemical and biological characteristics. However, the phytochemical and biological studies regarding olive flowers remain limited. The aim of the present study was the phytochemical characterization of olive flowers' hydroalcoholic extract from Greek variety Lianolia, the effective isolation of the major secondary metabolites and evaluation of their inhibition activity against tyrosinase, elastase and collagenase. UPLC-HRMS/MS analysis was used to investigate the chemical composition of hydroalcoholic extract resulting in the identification of sixty-three secondary metabolites witch mainly belong to phenilethanoids, triterpenoids, flavonoids and secoiridoids. The orthogonial combination of Centrifugal Partition Chromatography and preparative HPLC in the same purification process led to the isolation of nine major compounds of the extract including two triterpenic acids, two flavonoid glycosides and five secoiridoid derivatives. From them, oleofloside A and oleofloside B are new natural products. Although, the hydroalcoholic extract and isolated secoiridoids exhibited weak or no inhibition activity towards tyrosinase and elastase, they exhibit remarkable anti-collagenase activity with 2΄-ethoxyoleuropein being the most active compound.
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Affiliation(s)
- Apostolis Angelis
- Laboratory of Pharmacognosy and Natural Products Chemistry, School of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece
| | - Panagiotis Mavros
- Laboratory of Pharmacognosy and Natural Products Chemistry, School of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece; PharmaGnose S.A., Papathansiou 24, 34100 Chalkida, Euboea, Greece
| | - Panagiota Efstathia Nikolaou
- Laboratory of Pharmacology, School of Pharmacy, University of Athens, Panepistimioupolis, Zografou, 15771 Athens, Greece
| | - Sofia Mitakou
- Laboratory of Pharmacognosy and Natural Products Chemistry, School of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece
| | - Maria Halabalaki
- Laboratory of Pharmacognosy and Natural Products Chemistry, School of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece
| | - Leandros Skaltsounis
- Laboratory of Pharmacognosy and Natural Products Chemistry, School of Pharmacy, University of Athens, Panepistimioupoli Zografou, 15771 Athens, Greece.
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111
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Qian W, Liu W, Zhu D, Cao Y, Tang A, Gong G, Su H. Natural skin-whitening compounds for the treatment of melanogenesis (Review). Exp Ther Med 2020; 20:173-185. [PMID: 32509007 PMCID: PMC7271691 DOI: 10.3892/etm.2020.8687] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 03/17/2020] [Indexed: 01/23/2023] Open
Abstract
Melanogenesis is the process for the production of melanin, which is the primary cause of human skin pigmentation. Skin-whitening agents are commercially available for those who wish to have a lighter skin complexions. To date, although numerous natural compounds have been proposed to alleviate hyperpigmentation, insufficient attention has been focused on potential natural skin-whitening agents and their mechanism of action from the perspective of compound classification. In the present article, the synthetic process of melanogenesis and associated core signaling pathways are summarized. An overview of the list of natural skin-lightening agents, along with their compound classifications, is also presented, where their efficacy based on their respective mechanisms of action on melanogenesis is discussed.
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Affiliation(s)
- Wenhui Qian
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China.,School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Wenya Liu
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Dong Zhu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Yanli Cao
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Anfu Tang
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Guangming Gong
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Hua Su
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
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112
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Chen J, Ye Y, Ran M, Li Q, Ruan Z, Jin N. Inhibition of Tyrosinase by Mercury Chloride: Spectroscopic and Docking Studies. Front Pharmacol 2020; 11:81. [PMID: 32210794 PMCID: PMC7068222 DOI: 10.3389/fphar.2020.00081] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 01/27/2020] [Indexed: 11/13/2022] Open
Abstract
Inorganic mercury compounds have been used in skin-lightening products since ancient times. Although a previous study demonstrated that mercury impeded the transfer of Cu2+ to the apotyrosinase, the effect of mercury on tyrosinase is still unclear. In the present study, the mechanism of mercury chloride (HgCl2) induced inactivation of tyrosinase was investigated for the first time. The IC50 values were 29.97 and 77.93 μmol/L for monophenolase and diphenolase, respectively. A kinetic analysis revealed that HgCl2 inhibited tyrosinase activity in an irreversible non-competitive manner. The strong intrinsic fluorescence quenching suggested that the formation of the HgCl2-tyrosinase complex induced conformational changes of the enzyme, and HgCl2 had only one single binding site or a single class of binding site on tyrosinase. The molecular docking and further experiments demonstrated that HgCl2 bound to the amino residuals (His) in the catalytic center of tyrosinase. To our knowledge, these findings presented in this paper were the first evidence of the direct interactions between HgCl2 and tyrosinase, which provided a deep understanding of the inhibition mechanism of mercury on tyrosinase.
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Affiliation(s)
- Jianmin Chen
- School of Pharmacy and Medical Technology, Putian University, Fujian, China.,Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine, Putian University, Fujian Province University, Fujian, China
| | - Yaling Ye
- School of Pharmacy and Medical Technology, Putian University, Fujian, China
| | - Mengnan Ran
- School of Pharmacy and Medical Technology, Putian University, Fujian, China
| | - Qinglian Li
- School of Pharmacy and Medical Technology, Putian University, Fujian, China
| | - Zhipeng Ruan
- School of Pharmacy and Medical Technology, Putian University, Fujian, China.,Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine, Putian University, Fujian Province University, Fujian, China
| | - Nan Jin
- School of Pharmacy and Medical Technology, Putian University, Fujian, China.,Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine, Putian University, Fujian Province University, Fujian, China
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113
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Wang R, Li N, Hu X, Pan J, Zhang G, Zeng X, Gong D. Characterizing the binding of tert-butylhydroquinone and its oxidation product tert-butylquinone with calf thymus DNA in vitro. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112338] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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114
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Ahmed MH, Aldesouki HM, Badria FA. Effect of phenolic compounds from the rind of Punica granatum on the activity of three metabolism-related enzymes. Biotechnol Appl Biochem 2020; 67:960-972. [PMID: 31769157 DOI: 10.1002/bab.1866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 11/22/2019] [Indexed: 12/15/2022]
Abstract
Enzyme activity modulation by synthetic compounds provide strategies combining the inhibitory and therapeutic mode of action of the confirmed inhibitors. However, natural modulators could offer a valuable alternative for synthetic ones for the treatment of different chronic diseases (diabetes, hypertension, cancer) due to the numerous side effects of the latter. In vitro screening assays were conducted for Punica granatum rind methanolic extract against three metabolism-related enzymes: α-amylase, tyrosinase, and hyaluronidase. The obtained results showed that the examined extract retained high multitarget inhibition with inhibition percentages 31.5 ± 1.3%, 75.9 ± 4.7%, and 68.5 ± 5.3% against α-amylase, tyrosinase, and hyaluronidase, respectively. Bioguided fractionation of P. granatum rind extract revealed that quercetin is the major active compound with inhibitory activities: 54.3 ± 2.7%, 94.2 ± 3.5%, and 90.9 ± 2.7% against α-amylase, tyrosinase, and hyaluronidase, respectively. Kinetic studies of enzymes showed that quercetin inhibition was noncompetitive, uncompetitive, and competitive for α-amylase, tyrosinase, and hyaluronidase, respectively. The molecular docking of quercetin with α-amylase and hyaluronidase showed high binding energy with different bonds stabilizing the ligand-protein complex. Compiling all obtained results led to conclude that both P. granatum rind extract and quercetin have multitarget activities with potential therapeutic applications in many metabolic disorders.
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Affiliation(s)
- Mohamed H Ahmed
- Departments of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Hala M Aldesouki
- Departments of Biochemistry, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Farid A Badria
- Departments of Pharmacognosy, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
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115
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Chen J, Li Q, Ye Y, Huang Z, Ruan Z, Jin N. Phloretin as both a substrate and inhibitor of tyrosinase: Inhibitory activity and mechanism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 226:117642. [PMID: 31614273 DOI: 10.1016/j.saa.2019.117642] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 10/06/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
Tyrosinase is the rate-limiting enzyme for controlling the production of melanin in the human body, and overproduction of melanin can lead to a variety of skin disorders. In this paper, the inhibitory kinetics of phloretin on tyrosinase and their binding mechanism were determined using spectroscopy, molecular docking, antioxidant assays and chromatography. The spectroscopic results indicate that phloretin reversibly inhibits tyrosinase in a mix-type manner through a multiphase kinetic process with the IC50 of 169.36 μmol/L. It is shown that phloretin has a strong ability to quench the intrinsic fluorescence of tyrosinase mainly through a static quenching procedure, suggesting that a stable phloretin-tyrosinase complex is generated. Molecular docking results suggest that the dominant conformation of phloretin binds to the gate of the active site of tyrosinase. Moreover, the antioxidant assays demonstrate that phloretin has powerful antioxidant capacity and has the ability to reduce o-dopaquinone to l-dopa just like ascorbic acid. Interestingly, the results of spectroscopy and chromatography indicate that phloretin is a substrate of tyrosinase but also an inhibitor. The possible inhibitory mechanism is proposed, which will be helpful to design and search for tyrosinase inhibitors.
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Affiliation(s)
- Jianmin Chen
- School of Pharmacy and Medical Technology, Putian University, Fujian, China; Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine (Putian University), Fujian Province University, Fujian, China.
| | - Qinglian Li
- School of Pharmacy and Medical Technology, Putian University, Fujian, China
| | - Yaling Ye
- School of Pharmacy and Medical Technology, Putian University, Fujian, China
| | - Ziyao Huang
- School of Pharmacy and Medical Technology, Putian University, Fujian, China
| | - Zhipeng Ruan
- School of Pharmacy and Medical Technology, Putian University, Fujian, China; Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine (Putian University), Fujian Province University, Fujian, China
| | - Nan Jin
- School of Pharmacy and Medical Technology, Putian University, Fujian, China; Key Laboratory of Pharmaceutical Analysis and Laboratory Medicine (Putian University), Fujian Province University, Fujian, China
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116
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Tang H, Huang L, Sun C, Zhao D. Exploring the structure–activity relationship and interaction mechanism of flavonoids and α-glucosidase based on experimental analysis and molecular docking studies. Food Funct 2020; 11:3332-3350. [DOI: 10.1039/c9fo02806d] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An integrated method was explored to investigate the structure–activity relationship and interaction mechanism between a library of natural flavonoids and α-glucosidase.
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Affiliation(s)
- Hongjin Tang
- College of Biological and Chemical Engineering
- Anhui Polytechnic University
- Wuhu 241000
- P. R. China
| | - Lin Huang
- Blood Purification Center
- Affiliated Yijishan Hospital of Wannan Medical College
- Wuhu 241001
- P. R. China
| | - Chunyong Sun
- College of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Jinan 250355
- P. R. China
| | - Dongsheng Zhao
- College of Pharmacy
- Shandong University of Traditional Chinese Medicine
- Jinan 250355
- P. R. China
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117
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Song X, Hu X, Zhang Y, Pan J, Gong D, Zhang G. Inhibitory mechanism of epicatechin gallate on tyrosinase: inhibitory interaction, conformational change and computational simulation. Food Funct 2020; 11:4892-4902. [DOI: 10.1039/d0fo00003e] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Epicatechin gallate can inhibit the activity of tyrosinase in a mixed-type manner.
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Affiliation(s)
- Xin Song
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Ying Zhang
- Division of Accounting
- Nanchang University
- Nanchang 330047
- China
| | - Junhui Pan
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Deming Gong
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
- Department of Biomedicine
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
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118
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Interaction characterization of 5−hydroxymethyl−2−furaldehyde with human serum albumin: Binding characteristics, conformational change and mechanism. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.111835] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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119
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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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120
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Chortani S, Nimbarte VD, Horchani M, Ben Jannet H, Romdhane A. Synthesis, biological evaluation and molecular docking analysis of novel benzopyrimidinone derivatives as potential anti-tyrosinase agents. Bioorg Chem 2019; 92:103270. [DOI: 10.1016/j.bioorg.2019.103270] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 08/13/2019] [Accepted: 09/09/2019] [Indexed: 10/26/2022]
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121
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Zengin G, Ferrante C, Gnapi DE, Sinan KI, Orlando G, Recinella L, Diuzheva A, Jekő J, Cziáky Z, Chiavaroli A, Leone S, Brunetti L, Picot-Allain C, Mahomoodally MF, Angelini P, Covino S, Venanzoni R, Tirillini B, Menghini L. Comprehensive approaches on the chemical constituents and pharmacological properties of flowers and leaves of American basil (Ocimum americanum L). Food Res Int 2019; 125:108610. [DOI: 10.1016/j.foodres.2019.108610] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 08/06/2019] [Accepted: 08/11/2019] [Indexed: 01/06/2023]
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122
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Flower and Leaf Extracts of Sambucus nigra L.: Application of Membrane Processes to Obtain Fractions with Antioxidant and Antityrosinase Properties. MEMBRANES 2019; 9:membranes9100127. [PMID: 31554343 PMCID: PMC6835890 DOI: 10.3390/membranes9100127] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/19/2019] [Accepted: 09/20/2019] [Indexed: 01/09/2023]
Abstract
This study aimed at evaluating and comparing the chemical profile as well as the antityrosinase and antioxidant activities of ethanol (EtOH) and methanol (MeOH) extracts of Sambucus nigra L. (Adoxaceae) flowers and leaves in order to discover new candidates for food additives and cosmetic and pharmaceutical products. For this purpose, a novel lower-melting-point ethylene-chlorotrifluoroethylene (LMP ECTFE) nanofiltration (NF) membrane was employed in order to produce the concentrated fractions of S. nigra. Floral extracts were richer in phytochemicals in comparison to the leaf extracts. The High-performance liquid chromatography (HPLC) profile revealed rutin, quercetin, protocateuchic acid, 3,5-dicaffeoylquinic acid, and neochlorogenic acid as the most abundant compounds. Ferric reducing antioxidant power (FRAP), 2,2’-diphenil-1-picrylhydrazil (DPPH) radical scavenging, and 2,2’-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) tests were used to investigate the antioxidant properties. NF retentate fractions of floral ethanol extracts exerted the highest tyrosinase inhibitory activity with an IC50 of 53.9 µg/mL and the highest ABTS radical scavenging activity (IC50 of 46.4 µg/mL). In conclusion, the present investigation revealed the potential benefits of NF application in S. nigra extracts processing, suggesting the use of retentate fractions as a promising source for antioxidant and tyrosinase inhibitory compounds which could pave the way for future applications.
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123
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Effect of Chrysanthemum indicum Linné extract on melanogenesis through regulation of TGF-β/JNK signaling pathway. Food Sci Biotechnol 2019; 28:1577-1582. [PMID: 31695958 DOI: 10.1007/s10068-019-00668-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/14/2019] [Accepted: 08/06/2019] [Indexed: 10/26/2022] Open
Abstract
Although several physiological effects of Chrysanthemum indicum Linné (CL) have been researched, the specific effect and molecular mechanism of CL as a functional food material for skin health remain still unknown. Here, it was observed that the α-MSH and IBMX-initiated B16F10 melanogenesis was suppressed by the CL water extract (CLE) treatment. The CLE treatment also increased the mRNA expression levels of pro-collagen1α2, collagen1α2, and fibronectin via exerting the TGF-β/JNK signaling pathway. Together, the beneficial role of CLE in skin health was demonstrated through the downregulation of melanogenesis and enhancement of skin fibril-related genes. It was also revealed that the function of CLE is mediated with the activation of the TGF-β/JNK signaling pathway. These results may provide evidences for the development of functional foods using CLE for maintaining healthy skin.
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124
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Binding interaction between β-conglycinin/glycinin and cyanidin-3-O-glucoside in acidic media assessed by multi-spectroscopic and thermodynamic techniques. Int J Biol Macromol 2019; 137:366-373. [DOI: 10.1016/j.ijbiomac.2019.07.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 06/26/2019] [Accepted: 07/01/2019] [Indexed: 12/13/2022]
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125
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Li F, Guo S, Zhang S, Peng S, Cao W, Ho CT, Bai N. Bioactive Constituents of F. esculentum Bee Pollen and Quantitative Analysis of Samples Collected from Seven Areas by HPLC. Molecules 2019; 24:E2705. [PMID: 31349561 PMCID: PMC6696413 DOI: 10.3390/molecules24152705] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/16/2019] [Accepted: 07/22/2019] [Indexed: 11/17/2022] Open
Abstract
Bee pollen contains all the essential amino acids needed by humans. China is the largest producer of bee pollen in the world. In the present study, we identified 11 fatty acids in F. esculentum bee pollen oil by GC-MS analysis, and 16 compounds were isolated from F. esculentum bee pollen by column chromatography and identified. A high-performance liquid chromatography-diode array detector (HPLC-DAD) method was established for the quality control of F. esculentum bee pollen. A validated HPLC-DAD method was successfully applied to the simultaneous characterization and quantification of nine main constituents in seven samples collected from seven different areas in China. The results showed that all standard calibration curves exhibited good linearity (R2 > 0.999) in HPLC-DAD analysis with excellent precision, repeatability and stability. The total amount in the samples from the seven regions ranged from 23.50 to 46.05 mg/g. In addition, seven compounds were studied for their bioactivity using enzymic methods, whereby kaempferol (3) showed high α-glucosidase inhibitory activity (IC50: 80.35 μg/mL), ergosterol peroxide (8) showed high tyrosinase inhibitory activity (IC50: 202.37 μg/mL), and luteolin (1) had strong acetylcholinesterase inhibitory activity (IC50: 476.25 μg/mL). All results indicated that F. esculentum bee pollen could be a nutritious health food.
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Affiliation(s)
- Feng Li
- College of Chemical Engineering, Department of Pharmaceutical Engineering, Northwest University, Taibai North Road 229, Xi'an 710069, China
| | - Sen Guo
- College of Chemical Engineering, Department of Pharmaceutical Engineering, Northwest University, Taibai North Road 229, Xi'an 710069, China
- College of Food Science and Technology, Northwest University, Taibai North Road 229, Xi'an 710069, China
| | - Shanshan Zhang
- College of Chemical Engineering, Department of Pharmaceutical Engineering, Northwest University, Taibai North Road 229, Xi'an 710069, China
| | - Sainan Peng
- College of Chemical Engineering, Department of Pharmaceutical Engineering, Northwest University, Taibai North Road 229, Xi'an 710069, China
| | - Wei Cao
- College of Food Science and Technology, Northwest University, Taibai North Road 229, Xi'an 710069, China
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901, USA.
| | - Naisheng Bai
- College of Food Science and Technology, Northwest University, Taibai North Road 229, Xi'an 710069, China.
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126
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Rollán GC, Gerez CL, LeBlanc JG. Lactic Fermentation as a Strategy to Improve the Nutritional and Functional Values of Pseudocereals. Front Nutr 2019; 6:98. [PMID: 31334241 PMCID: PMC6617224 DOI: 10.3389/fnut.2019.00098] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 06/14/2019] [Indexed: 12/15/2022] Open
Abstract
One of the greatest challenges is to reduce malnutrition worldwide while promoting sustainable agricultural and food systems. This is a daunting task due to the constant growth of the population and the increasing demands by consumers for functional foods with higher nutritional values. Cereal grains are the most important dietary energy source globally; wheat, rice, and maize currently provide about half of the dietary energy source of humankind. In addition, the increase of celiac patients worldwide has motivated the development of gluten-free foods using alternative flour types to wheat such as rice, corn, cassava, soybean, and pseudocereals (amaranth, quinoa, and buckwheat). Amaranth and quinoa have been cultivated since ancient times and were two of the major crops of the Pre-Colombian cultures in Latin- America. In recent years and due to their well-known high nutritional value and potential health benefits, these pseudocereals have received much attention as ideal candidates for gluten-free products. The importance of exploiting these grains for the elaboration of healthy and nutritious foods has forced food producers to develop novel adequate strategies for their processing. Fermentation is one of the most antique and economical methods of producing and preserving foods and can be easily employed for cereal processing. The nutritional and functional quality of pseudocereals can be improved by fermentation using Lactic Acid Bacteria (LAB). This review provides an overview on pseudocereal fermentation by LAB emphasizing the capacity of these bacteria to decrease antinutritional factors such as phytic acid, increase the functional value of phytochemicals such as phenolic compounds, and produce nutritional ingredients such as B-group vitamins. The numerous beneficial effects of lactic fermentation of pseudocereals can be exploited to design novel and healthier foods or grain ingredients destined to general population and especially to patients with coeliac disease.
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Affiliation(s)
- Graciela C. Rollán
- Centro de Referencia para Lactobacilos (CERELA) - CONICET, San Miguel de Tucumán, Argentina
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128
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Lu B, Huang Y, Chen Z, Ye J, Xu H, Chen W, Long X. Niosomal Nanocarriers for Enhanced Skin Delivery of Quercetin with Functions of Anti-Tyrosinase and Antioxidant. Molecules 2019; 24:E2322. [PMID: 31238562 PMCID: PMC6632015 DOI: 10.3390/molecules24122322] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/12/2019] [Accepted: 06/21/2019] [Indexed: 12/02/2022] Open
Abstract
This study aimed to screen an effective flavonoid with promising whitening and antioxidant capacities, and design flavonoid-loaded niosomes to improve its solubility, stability, and penetration. In vitro anti-tyrosinase and 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging experiments were conducted to investigate the whitening and antioxidant capacities of several flavonoids, including quercetin, morin, festin, myricetin, rutin, and breviscapine. The conductivity, viscosity, and particle size of Span60-RH40-based formulation of nonionic surfactant vesicles (niosomes) with different mass ratios were studied to determine the most appropriate formulation. Drug-loaded niosomes were characterized for size, zeta potential, morphology, and entrapment efficiency. The photostability, solubility, release behavior, ex vivo drug penetration, and skin retention were also studied. The results showed that quercetin has considerable whitening and antioxidant capacities and Span60-RH40 at a mass ratio of 9:11 forms spherical or oval niosomes of 97.6 ± 3.1 nm with a zeta potential range of 31.1 ± 0.9 mV, and drug entrapment efficiency as high as 87.3 ± 1.6%. Niosomes remarkably improved the solubility and photostability of quercetin. Furthermore, compared to quercetin solution, quercetin-niosomes had the advantages of sustained release and improved transdermal penetration, with skin retention 2.95 times higher than quercetin solution.
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Affiliation(s)
- Banyi Lu
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China; (B.L.); (Y.H.); (H.X.)
| | - Yanting Huang
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China; (B.L.); (Y.H.); (H.X.)
| | - Zhongyun Chen
- Department of Pharmaceutics, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China; (Z.C.); (J.Y.)
| | - Jingyi Ye
- Department of Pharmaceutics, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China; (Z.C.); (J.Y.)
| | - Hongyu Xu
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China; (B.L.); (Y.H.); (H.X.)
| | - Wenrong Chen
- Research and Development Center, Sirio Pharma Co., Ltd, Shantou 515041, China
| | - Xiaoying Long
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China; (B.L.); (Y.H.); (H.X.)
- Guangdong Engineering & Technology Research Center of Topical Precise Drug Delivery System, Guangzhou 510006, China
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129
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Xu Y, Dai T, Li T, Huang K, Li Y, Liu C, Chen J. Investigation on the binding interaction between rice glutelin and epigallocatechin-3-gallate using spectroscopic and molecular docking simulation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 217:215-222. [PMID: 30939368 DOI: 10.1016/j.saa.2019.03.091] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 02/24/2019] [Accepted: 03/25/2019] [Indexed: 06/09/2023]
Abstract
The interaction between plant protein and polyphenol is a topic of considerable interest. However, there is relatively little understanding about the interaction between rice protein and epigallocatechin-3-gallate (EGCG). The spectroscopy and computational docking program were used to investigate the potential interaction between rice glutelin (RG) and EGCG. It was found that the intrinsic fluorescence of RG could be quenched by EGCG, which indicated interaction occurred between them. Thermodynamic analysis elucidated that the interaction process between RG and EGCG happened spontaneously with hydrogen bond as the primary driving force. The ANS-fluorescence indicated that the surface hydrophobicity of RG reduced with the increasing of EGCG. Circular dichroism spectra and synchronous fluorescence gave further information for the conformational and microenvironmental changes of RG. Particularly, the α-helix structure reduced and random coil structure increased after the binding interaction. Furthermore, the computational docking program exhibited target sites in which the amino acid residues of RG and EGCG might be bound together.
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Affiliation(s)
- Yujia Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, China
| | - Taotao Dai
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, China
| | - Ti Li
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, China
| | - Kechou Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, China
| | - Yuting Li
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, China
| | - Chengmei Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, China
| | - Jun Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, China.
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130
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Fan M, Ding H, Zhang G, Hu X, Gong D. Relationships of dietary flavonoid structure with its tyrosinase inhibitory activity and affinity. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.02.076] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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131
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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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132
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Wang J, Li L, Tan J, Song X, Chen D, Xu J, Ding G. Variations in the Components and Antioxidant and Tyrosinase Inhibitory Activities ofStyphnolobium japonicum(L.)Schott Extract during Flower Maturity Stages. Chem Biodivers 2019; 16:e1800504. [DOI: 10.1002/cbdv.201800504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/17/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Ji‐Rui Wang
- Chongqing Engineering Research Center for Fine Variety Breeding Techniques of Chinese Materia Medica, Chongqing Key Laboratory of Chinese Materia Medica, Chongqing Sub-Center of National Resource Center for Chinese Materia Medica China Academy of Chinese Medical ScienceChongqing Academy of Chinese Materia Medica No. 34 Nanshan Road, Nan‘an, Chongqing 400065 P. R. China
| | - Long‐Yun Li
- Chongqing Engineering Research Center for Fine Variety Breeding Techniques of Chinese Materia Medica, Chongqing Key Laboratory of Chinese Materia Medica, Chongqing Sub-Center of National Resource Center for Chinese Materia Medica China Academy of Chinese Medical ScienceChongqing Academy of Chinese Materia Medica No. 34 Nanshan Road, Nan‘an, Chongqing 400065 P. R. China
| | - Jun Tan
- Chongqing Engineering Research Center for Fine Variety Breeding Techniques of Chinese Materia Medica, Chongqing Key Laboratory of Chinese Materia Medica, Chongqing Sub-Center of National Resource Center for Chinese Materia Medica China Academy of Chinese Medical ScienceChongqing Academy of Chinese Materia Medica No. 34 Nanshan Road, Nan‘an, Chongqing 400065 P. R. China
| | - Xu‐Hong Song
- Chongqing Engineering Research Center for Fine Variety Breeding Techniques of Chinese Materia Medica, Chongqing Key Laboratory of Chinese Materia Medica, Chongqing Sub-Center of National Resource Center for Chinese Materia Medica China Academy of Chinese Medical ScienceChongqing Academy of Chinese Materia Medica No. 34 Nanshan Road, Nan‘an, Chongqing 400065 P. R. China
| | - Da‐Xia Chen
- Chongqing Engineering Research Center for Fine Variety Breeding Techniques of Chinese Materia Medica, Chongqing Key Laboratory of Chinese Materia Medica, Chongqing Sub-Center of National Resource Center for Chinese Materia Medica China Academy of Chinese Medical ScienceChongqing Academy of Chinese Materia Medica No. 34 Nanshan Road, Nan‘an, Chongqing 400065 P. R. China
| | - Jin Xu
- Chongqing Engineering Research Center for Fine Variety Breeding Techniques of Chinese Materia Medica, Chongqing Key Laboratory of Chinese Materia Medica, Chongqing Sub-Center of National Resource Center for Chinese Materia Medica China Academy of Chinese Medical ScienceChongqing Academy of Chinese Materia Medica No. 34 Nanshan Road, Nan‘an, Chongqing 400065 P. R. China
| | - Gang Ding
- Chongqing Engineering Research Center for Fine Variety Breeding Techniques of Chinese Materia Medica, Chongqing Key Laboratory of Chinese Materia Medica, Chongqing Sub-Center of National Resource Center for Chinese Materia Medica China Academy of Chinese Medical ScienceChongqing Academy of Chinese Materia Medica No. 34 Nanshan Road, Nan‘an, Chongqing 400065 P. R. China
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133
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Revoltella S, Rainer B, Waltenberger B, Pagitz K, Schwaiger S, Stuppner H. HPTLC Autography Based Screening and Isolation of Mushroom Tyrosinase Inhibitors of European Plant Species. Chem Biodivers 2019; 16:e1800541. [DOI: 10.1002/cbdv.201800541] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 12/17/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Silvia Revoltella
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
| | - Bettina Rainer
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
- MCI Management Center Innsbruck Maximilianstraße 2 Innsbruck 6020 Austria
| | - Birgit Waltenberger
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
| | - Konrad Pagitz
- Institute of BotanyUniversity of Innsbruck Sternwartestraße 15 Innsbruck 6020 Austria
| | - Stefan Schwaiger
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
| | - Hermann Stuppner
- Institute of Pharmacy/Pharmacognosy, Center for Molecular Biosciences Innsbruck (CMBI)University of Innsbruck, Innrain 80–82 Innsbruck 6020 Austria
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Tyrosinase and α-glucosidase inhibitory potential of compounds isolated from Quercus coccifera bark: In vitro and in silico perspectives. Bioorg Chem 2019; 86:296-304. [PMID: 30738329 DOI: 10.1016/j.bioorg.2019.02.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 01/19/2019] [Accepted: 02/04/2019] [Indexed: 01/16/2023]
Abstract
Bark of Quercus coccifera is widely used in folk medicine. We tested tyrosinase and α-glucosidase inhibitory effects of Q. coccifera bark extract and isolated compounds from it. The extract inhibited tyrosinase with an IC50 value of 75.13 ± 0.44 µg/mL. Among the isolated compounds, polydatin (6) showed potent tyrosinase inhibition compared to the positive control, kojic acid, with an IC50 value of 4.05 ± 0.30 µg/mL. The Q. coccifera extract also inhibited α-glucosidase significantly with an IC50 value of 3.26 ± 0.08 µg/mL. (-)-8-Chlorocatechin (5) was the most potent isolate, also more potent than the positive control, acarbose, with an IC50 value of 43.60 ± 0.67 µg/mL. According to the kinetic analysis, 6 was a noncompetitive and 5 was a competitive inhibitor of tyrosinase, and 5 was a noncompetitive α-glucosidase inhibitor. In the light of these findings, we performed in silico molecular docking studies for 5 and 6 with QM/MM optimizations to predict their tyrosinase inhibition mechanisms at molecular level and search for correlations with the in vitro results. We found that the ionized form of 5 (5i) showed higher affinity and more stable binding to tyrosinase catalytic site than its neutral form, while 6 bound to the predicted allosteric sites of the enzyme better than the catalytic site.
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135
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Uysal A, Ozer OY, Zengin G, Stefanucci A, Mollica A, Picot-Allain CMN, Mahomoodally MF. Multifunctional approaches to provide potential pharmacophores for the pharmacy shelf: Heracleum sphondylium L. subsp. ternatum (Velen.) Brummitt. Comput Biol Chem 2019; 78:64-73. [DOI: 10.1016/j.compbiolchem.2018.11.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/29/2018] [Accepted: 11/19/2018] [Indexed: 11/24/2022]
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136
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El-Sayed ST, Al- Azzouny RA, Ali OS. Purification and functional characterization of a novel tyrosinase (diphenolase) inhibitory peptides prepared from Solunum tuberosum peels protein via enzymatic hydrolysis. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2018.12.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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137
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Şöhretoğlu D, Sari S, Barut B, Özel A. Tyrosinase inhibition by some flavonoids: Inhibitory activity, mechanism by in vitro and in silico studies. Bioorg Chem 2018; 81:168-174. [DOI: 10.1016/j.bioorg.2018.08.020] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 08/10/2018] [Accepted: 08/14/2018] [Indexed: 12/31/2022]
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138
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Antityrosinase mechanism of omeprazole and its application on the preservation of fresh-cut Fuji apple. Int J Biol Macromol 2018; 117:538-545. [DOI: 10.1016/j.ijbiomac.2018.05.172] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/22/2018] [Accepted: 05/23/2018] [Indexed: 01/12/2023]
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139
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Integrated study of the mechanism of tyrosinase inhibition by baicalein using kinetic, multispectroscopic and computational simulation analyses. Int J Biol Macromol 2018; 118:57-68. [DOI: 10.1016/j.ijbiomac.2018.06.055] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/04/2018] [Accepted: 06/12/2018] [Indexed: 12/22/2022]
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140
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Guler GO, Zengin G, Karadag F, Mollica A, Picot CMN, Mahomoodally MF. HPLC-DAD profiles and pharmacological insights of Onobrychis argyrea subsp isaurica extracts. Comput Biol Chem 2018; 76:256-263. [DOI: 10.1016/j.compbiolchem.2018.07.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 07/25/2018] [Accepted: 07/26/2018] [Indexed: 12/29/2022]
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141
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Lin MZ, Chai WM, Zheng YL, Huang Q, Ou-Yang C. Inhibitory kinetics and mechanism of rifampicin on α-glucosidase: Insights from spectroscopic and molecular docking analyses. Int J Biol Macromol 2018; 122:1244-1252. [PMID: 30227201 DOI: 10.1016/j.ijbiomac.2018.09.077] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/08/2018] [Accepted: 09/13/2018] [Indexed: 01/12/2023]
Abstract
α-Glucosidase is a critical enzyme associated with diabetes mellitus, and the inhibitors of the enzyme play important roles in the treatment of the disease. In this study, the inhibitory effect and mechanism of rifampicin on α-glucosidase were investigated by multispectroscopic methods along with molecular docking technique. The results showed that rifampicin inhibited α-glucosidase activity prominently (IC50 = 135 ± 1.2 μM) in a reversible and competitive-type manner. The fluorescence intensity of α-glucosidase was quenched by rifampicin through forming rifampicin-α-glucosidase complex in a static procedure. And the formation of the rifampicin-α-glucosidase complex was driven spontaneously by hydrophobic forces and hydrogen bonds. The results obtained from molecular docking further indicated that hydrophobic forces were formed between rifampicin and amino acid residues Phe 173, Pro151, and hydrogen bonds were generated by the interactions of rifampicin with residues Ser 180, Asn 414, Gly160, and Gly161 of α-glucosidase. Moreover, it was found that the binding of rifampicin to α-glucosidase could alter the conformation of the enzyme to make it steady, and the binding distance was estimated to be 1.02 nm. Therefore, this study confirmed a novel α-glucosidase inhibitor and possibly contributed to the improvement of newfangled anti-diabetic agent.
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Affiliation(s)
- Mei-Zhen Lin
- College of Life Science and Key Laboratory of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Wei-Ming Chai
- College of Life Science and Key Laboratory of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
| | - Yun-Ling Zheng
- College of Life Science and Key Laboratory of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Qian Huang
- College of Life Science and Key Laboratory of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Chong Ou-Yang
- College of Life Science and Key Laboratory of Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
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142
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New insights into the in vitro biological effects, in silico docking and chemical profile of clary sage – Salvia sclarea L. Comput Biol Chem 2018; 75:111-119. [DOI: 10.1016/j.compbiolchem.2018.05.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 04/27/2018] [Accepted: 05/06/2018] [Indexed: 11/23/2022]
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143
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Kim JH, Cho IS, So YK, Kim HH, Kim YH. Kushenol A and 8-prenylkaempferol, tyrosinase inhibitors, derived from Sophora flavescens. J Enzyme Inhib Med Chem 2018; 33:1048-1054. [PMID: 29873272 PMCID: PMC6009905 DOI: 10.1080/14756366.2018.1477776] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Tyrosinase is known for an enzyme that plays a key role in producing the initial precursor of melanin biosynthesis. Inhibition of the catalytic reaction of this enzyme led to some advantage such as skin-whitening and anti-insect agents. To find a natural compound with inhibitory activity towards tyrosinase, the five flavonoids of kushenol A (1), 8-prenylkaempferol (2), kushenol C (3), formononetin (4) and 8-prenylnaringenin (5) were isolated by column chromatography from a 95% methanol extract of Sophora flavescens. The ability of these flavonoids to block the conversion of L-tyrosine to L-DOPA by tyrosinase was tested in vitro. Compounds 1 and 2 exhibited potent inhibitory activity, with IC50 values less than 10 µM. Furthermore, enzyme kinetics and molecular docking analysis revealed the formation of a binary encounter complex between compounds 1–4 and the enzyme. Also, all of the isolated compounds (1–5) were confirmed to possess antioxidant activity.
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Affiliation(s)
- Jang Hoon Kim
- a Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute , Jeongeup , Republic of Korea
| | - In Sook Cho
- b Department of Horticultural and Crop Environment , National Institute of Horticultural and Herbal Science, RDA , Wanju , Republic of Korea
| | - Yang Kang So
- a Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute , Jeongeup , Republic of Korea
| | - Hyeong-Hwan Kim
- b Department of Horticultural and Crop Environment , National Institute of Horticultural and Herbal Science, RDA , Wanju , Republic of Korea
| | - Young Ho Kim
- c College of Pharmacy , Chungnam National University , Daejeon , Republic of Korea
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144
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Dai T, Chen J, Li Q, Li P, Hu P, Liu C, Li T. Investigation the interaction between procyanidin dimer and α-amylase: Spectroscopic analyses and molecular docking simulation. Int J Biol Macromol 2018; 113:427-433. [DOI: 10.1016/j.ijbiomac.2018.01.189] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 01/28/2018] [Accepted: 01/29/2018] [Indexed: 01/31/2023]
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145
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Hwang SH, Wang Z, Suh HW, Lim SS. Antioxidant activity and inhibitory effects of 2-hydroxy-3-methylcyclopent-2-enone isolated from ribose-histidine Maillard reaction products on aldose reductase and tyrosinase. Food Funct 2018. [PMID: 29513344 DOI: 10.1039/c7fo01438d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study aimed to better understand the functional properties of ribose and 20 amino acid Maillard reaction products (MRPs). The ABTS+ radical scavenging ability of the ribose-20 amino acid MRPs was evaluated. Among the MRPs, ribose-histidine MRPs (RH-MRPs) showed the highest inhibitory activities on the ABTS+ radical scavenging ability, aldose reductase (AR), and tyrosinase compared to other MRPs. Functional compounds with antioxidant and AR inhibitory activities have been recognized as an important strategy in the prevention and treatment of diabetic complications, and the search for tyrosinase inhibitors is important for the treatment of hyperpigmentation, development of skin-whitening agents, and use as preservatives in the food industry. On this basis, we sought to isolate and identify compounds with inhibitory activities against AR and tyrosinase. RH-MRPs were heated at 120 °C for 2 h and fractionated using four solvents: methylene chloride (MC), ethyl acetate, n-butanol, and water. The highest inhibitions were found in the MC fraction. The two compounds from this fraction were purified by silica gel column and preparative thin layer chromatography, and identified as 2-hydroxy-3-methylcyclopent-2-enone and furan-3-carboxylic acid. AR inhibition, tyrosinase inhibition, and ABTS+ scavenging (IC50) of 2-hydroxy-3-methylcyclopent-2-enone were 4.47, 721.91 and 9.81 μg mL-1, respectively. In this study, inhibitory effects of 2-hydroxy-3-methylcyclopent-2-enone isolated from RH-MRP were demonstrated on AR, tyrosinase, and its antioxidant activity for the first time. RH-MRP and its constituents can be developed as beneficial functional food sources and cosmetic materials and should be investigated further as potential functional food sources.
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Affiliation(s)
- Seung Hwan Hwang
- Department of Food Science and Nutrition, Hallym University, 1 Hallymdeahak-gil, Chuncheon, 24252, Republic of Korea.
| | - Zhiqiang Wang
- Department of Food Science and Nutrition, Hallym University, 1 Hallymdeahak-gil, Chuncheon, 24252, Republic of Korea. and College of Public Health, Hebei University, Baoding, 071002, China
| | - Hong-Won Suh
- Department of Pharmacology, College of Medicine, Hallym University, 1 Hallymdeahak-gil, Chuncheon, 24252 Republic of Korea and Institute of Natural Medicine, Hallym University, 1 Hallymdeahak-gil, Chuncheon, 24252 Republic of Korea
| | - Soon Sung Lim
- Department of Food Science and Nutrition, Hallym University, 1 Hallymdeahak-gil, Chuncheon, 24252, Republic of Korea. and Institute of Natural Medicine, Hallym University, 1 Hallymdeahak-gil, Chuncheon, 24252 Republic of Korea and Institute of Korean Nutrition, Hallym University, 1 Hallymdeahak-gil, Chuncheon, 24252 Republic of Korea
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146
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Shang C, Zhang Y, You X, Guo N, Wang Y, Fan Y, Liu W. The effect of 7,8,4´-trihydroxyflavone on tyrosinase activity and conformation: Spectroscopy and docking studies. LUMINESCENCE 2018; 33:681-691. [DOI: 10.1002/bio.3464] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/20/2017] [Accepted: 01/11/2018] [Indexed: 01/09/2023]
Affiliation(s)
- Chao Shang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Yongkui Zhang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Xue You
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Nihong Guo
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Yang Wang
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Yang Fan
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
| | - Wenbin Liu
- Department of Pharmaceutical and Biological Engineering, School of Chemical Engineering; Sichuan University; Chengdu People's Republic of China
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147
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Han L, Zhang L, Ma W, Li D, Shi R, Wang M. Proanthocyanidin B2 attenuates postprandial blood glucose and its inhibitory effect on alpha-glucosidase: analysis by kinetics, fluorescence spectroscopy, atomic force microscopy and molecular docking. Food Funct 2018; 9:4673-4682. [DOI: 10.1039/c8fo00993g] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
As a dimer of proanthocyanidin, proanthocyanidin B2 (PB2) was found to effectively attenuate postprandial blood glucose in mice after sucrose loading.
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Affiliation(s)
- Lin Han
- College of Food Science and Engineering
- Northwest A&F University
- Yangling 712100
- P. R. China
- College of Biology and Food Engineering
| | - Lingling Zhang
- College of Food Science and Engineering
- Northwest A&F University
- Yangling 712100
- P. R. China
| | - Wenfang Ma
- College of Food Science and Engineering
- Northwest A&F University
- Yangling 712100
- P. R. China
| | - Ding Li
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- P. R. China
| | - Rujie Shi
- College of Biology and Food Engineering
- Chongqing Three Gorges University
- Chongqing 404100
- P. R. China
| | - Min Wang
- College of Food Science and Engineering
- Northwest A&F University
- Yangling 712100
- P. R. China
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