1
|
Cheng KC, Chong PCT, Hsieh CC, Lin YT, Ye CH, Khumsupan D, Lu JJ, Yu WC, Cheng KW, Yap KY, Kou WS, Cheng MT, Hsu CC, Sheen LY, Lin SP, Wei AC, Yu SH. Identification of anti-fibrotic and pro-apoptotic bioactive compounds from Ganoderma formosanum and their possible mechanisms in modulating TGF-β1-induced lung fibrosis. JOURNAL OF ETHNOPHARMACOLOGY 2024; 327:118008. [PMID: 38458343 DOI: 10.1016/j.jep.2024.118008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/28/2024] [Accepted: 03/03/2024] [Indexed: 03/10/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Compendium of Materia Medica and the Classic of Materia Medica, the two most prominent records of traditional Chinese medicine, documented the therapeutic benefits of Ganoderma sinense particularly in addressing pulmonary-related ailments. Ganoderma formosanum, an indigenous subspecies of G. sinense from Taiwan, has demonstrated the same therapeutic properties. AIM OF THE STUDY The aim of this study is to identify bioactive compounds and evaluate the potential of G. formosanum extracts as a novel treatment to alleviate pulmonary fibrosis (PF). Using an in-house drug screening platform, two-stage screening was performed to determine their anti-fibrotic efficacy. METHODS AND MATERIALS G. formosanum was fractionated into four partitions by solvents of different polarities. To determine their antifibrotic and pro-apoptotic properties, the fractions were analyzed using two TGF-β1-induced pulmonary fibrosis cell models (NIH-3T3) and human pulmonary fibroblast cell lines, immunoblot, qRT-PCR, and annexin V assays. Subsequently, transcriptomic analysis was conducted to validate the findings and explore possible molecular pathways. The identification of potential bioactive compounds was achieved through UHPLC-MS/MS analysis, while molecular interaction study was investigated by multiple ligands docking and molecular dynamic simulations. RESULTS The ethyl acetate fraction (EAF) extracted from G. formosanum demonstrated substantial anti-fibrotic and pro-apoptotic effects on TGF-β1-induced fibrotic models. Moreover, the EAF exhibited no discernible cytotoxicity. Untargeted UHPLC-MS/MS analysis identified potential bioactive compounds in EAF, including stearic acid, palmitic acid, and pentadecanoic acid. Multiple ligands docking and molecular dynamic simulations further confirmed that those bioactive compounds possess the ability to inhibit TGF-β receptor 1. CONCLUSION Potential bioactive compounds in G. formosanum were successfully extracted and identified in the EAF, whose anti-fibrotic and pro-apoptotic properties could potentially modulate pulmonary fibrosis. This finding not only highlights the EAF's potential as a promising therapeutic candidate to treat pulmonary fibrosis, but it also elucidates how Ganoderma confers pulmonary health benefits as described in the ancient texts.
Collapse
Affiliation(s)
- Kuan-Chen Cheng
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C; Institute of Food Science Technology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C; Department of Optometry, Asia University, No. 500, Lioufeng Rd., Wufeng, Taichung, Taiwan. R.O.C; Department of Medical Research, China Medical University Hospital, China Medical University, No. 91, Hsueh-Shih Rd., Taichung, Taiwan. R.O.C
| | - Patrick Chun Theng Chong
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Chen-Che Hsieh
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Yu-Te Lin
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan. R.O.C
| | - Chih-Hung Ye
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Darin Khumsupan
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Jheng-Jhe Lu
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Wei-Chieh Yu
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Kai-Wen Cheng
- Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Kah Yi Yap
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Weng Si Kou
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Meng-Tsung Cheng
- School of Pharmacy, College of Medicine, National Taiwan University, No.33, Linsen S. Rd., Taipei, 100025, Taiwan. R.O.C
| | - Cheng-Chih Hsu
- Department of Chemistry, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C; Leeuwenhoek Laboratories Co. Ltd., No. 71, Fanglan Rd, Taipei, 106038, Taiwan. R.O.C
| | - Lee-Yan Sheen
- Institute of Food Science Technology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C
| | - Shin-Ping Lin
- School of Food Safety, Taipei Medical University, No. 250, Wu-Hsing Street, Taipei, Taiwan. R.O.C
| | - An-Chi Wei
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan. R.O.C
| | - Shu-Han Yu
- Institute of Biotechnology, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei, Taiwan. R.O.C.
| |
Collapse
|
2
|
Yamazaki S, Shirata I, Mizuno M, Amano Y. Promotion of Thermal Inactivation Treatment of Apple Polyphenol Oxidase in the Presence of Trehalose. J Appl Glycosci (1999) 2024; 71:1-7. [PMID: 38799413 PMCID: PMC11116086 DOI: 10.5458/jag.jag.jag-2023_0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 11/07/2023] [Indexed: 05/29/2024] Open
Abstract
Trehalose is known to protect enzymes from denaturation. In the present study, we observed promotion of apple polyphenol oxidase (PPO) inactivation in a trehalose solution with thermal treatment. Crude PPO from Fuji apple was mixed with either sucrose or trehalose solutions, then the samples treated at 25 or 65 °C. In the presence of trehalose, PPO activities were markedly decreased upon treatment at 65 °C with increasing trehalose concentration. Furthermore, the reduction in PPO activity in the presence of trehalose was proportional to storage time after thermal treatment and thermal treatment time. Comparing PPO activities between treatment time 0 and 90 min at 65 °C, activities decreased 89 % for trehalose concentration of 0.2 M. These results indicates that trehalose acts not only as inhibitor but as promoter of inactivation of PPO. The Lineweaver-Burk plot indicated that trehalose acts on PPO as a non-competitive inhibitor during the 65 °C treatment. Two mechanisms of PPO inactivation in the presence of trehalose were suggested; one is the suppression of PPO activation cause by a thermal treatment, and another is the conformational change to inactivation form of PPO in conjunction with trehalose and a thermal treatment. Additionally, apple juice including 0.2 or 0.5 M trehalose with 65 °C treatment indicated slow browning than the juice with 0.2 or 0.5 M sucrose or without sugars. This result demonstrates that the preventing of browning with trehalose is a viable industrial food process.
Collapse
Affiliation(s)
- Shinya Yamazaki
- Food Technology Department, Nagano Prefecture General Industrial Technology Center
- Graduate School of Medicine, Science and Technology, Department of Biomedical Engineering, Shinshu University
| | - Ibuki Shirata
- Graduate School of Medicine, Science and Technology, Department of Biomedical Engineering, Shinshu University
| | - Masahiro Mizuno
- Graduate School of Medicine, Science and Technology, Department of Biomedical Engineering, Shinshu University
| | - Yoshihiko Amano
- Graduate School of Medicine, Science and Technology, Department of Biomedical Engineering, Shinshu University
| |
Collapse
|
3
|
Kanagaraj JC, Jana SB, Marathe SJ, Singhal RS. In silico guided pre-treatment of sugarcane juice with natural inhibitors of polyphenol oxidase (PPO) is a new and effective strategy for development of spray-dried formulation. J Food Sci 2024; 89:2232-2248. [PMID: 38380698 DOI: 10.1111/1750-3841.16995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 11/01/2023] [Accepted: 02/06/2024] [Indexed: 02/22/2024]
Abstract
Sugarcane juice is a popular beverage and is also processed to produce sugar. The polyphenol oxidase (PPO) in sugarcane juice causes enzymatic browning and makes the process of sugar production complex and cumbersome. Storage of sugarcane juice is also hampered by the high sugar content and rapid microbial fermentation. The present research assessed the potential of lemon juice (LJ) and ginger extract (GE) as natural inhibitors of PPO. Enzyme kinetics and the mechanism of inhibition of LJ and GE were studied. Primary investigation was carried out using molecular docking approach to assess the inhibitory potential of LJ and GE and to determine the nature of interaction between the enzyme and inhibitors. Extracts were used as inhibitors and studies revealed that both reduced the PPO activity. Subsequently, pure bioactive inhibitors such as ascorbic acid, citric acid, and 6-shogaol present in these natural extracts were used to study the mode of inhibition of PPO. Citric acid decreased PPO activity by lowering pH, while ascorbic acid was found to be a competitive inhibitor of PPO with a Ki of 75.69 µM. The proportion of LJ and GE required in sugarcane juice was optimized on the basis of browning index and sensory acceptance. Further, the sugarcane cane juice after inhibition of PPO under optimized conditions was spray dried and evaluated for reconstitution properties. The product formulated in the present study is a new and effective approach to address quality-compromising issues associated with long-term storage of cane juice.
Collapse
Affiliation(s)
| | - Shilpa B Jana
- Food Engineering and Technology Department, Institute of Chemical Technology, Mumbai, India
| | - Sandesh J Marathe
- Food Engineering and Technology Department, Institute of Chemical Technology, Mumbai, India
| | - Rekha S Singhal
- Food Engineering and Technology Department, Institute of Chemical Technology, Mumbai, India
| |
Collapse
|
4
|
Xu Y, Liang X, Hyun CG. Isolation, Characterization, Genome Annotation, and Evaluation of Tyrosinase Inhibitory Activity in Secondary Metabolites of Paenibacillus sp. JNUCC32: A Comprehensive Analysis through Molecular Docking and Molecular Dynamics Simulation. Int J Mol Sci 2024; 25:2213. [PMID: 38396889 PMCID: PMC10889091 DOI: 10.3390/ijms25042213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/05/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
A potential strain, Paenibacillus sp. JNUCC32, was isolated and subjected to whole-genome sequencing. Genome functional annotation revealed its active metabolic capabilities. This study aimed to investigate the pivotal secondary metabolites in the biological system. Fermentation and extraction were performed, resulting in the isolation of seven known compounds: tryptophol (1), 3-(4-hydroxyphenyl)propionic acid (2), ferulic acid (3), maculosin (4), brevianamide F (5), indole-3-acetic acid (6), and butyric acid (7). Tryptophol exhibited favorable pharmacokinetic properties and demonstrated certain tyrosinase inhibitory activity (IC50 = 999 μM). For further analysis of its inhibition mechanism through molecular docking and molecular dynamics (MD) simulation, tryptophol formed three hydrogen bonds and a pro-Michaelis complex with tyrosinase (binding energy = -5.3 kcal/mol). The MD simulation indicated favorable stability for the tryptophol-mushroom tyrosinase complex, primarily governed by hydrogen bond interactions. The crucial residues VAL-283 and HIS-263 in the docking were also validated. This study suggests tryptophol as a potential candidate for antibrowning agents and dermatological research.
Collapse
Affiliation(s)
| | | | - Chang-Gu Hyun
- Department of Beauty and Cosmetology, Jeju Inside Agency and Cosmetic Science Center, Jeju National University, Jeju 63243, Republic of Korea; (Y.X.); (X.L.)
| |
Collapse
|
5
|
Li N, Wang R, Li W, Du Q, Deng Z, Fan Y, Zheng L. Identification of OLA1 as a Novel Protein Target of Vitexin to Ameliorate Dextran Sulfate Sodium-Induced Colitis with Tissue Thermal Proteome Profiling. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:16057-16066. [PMID: 37856434 DOI: 10.1021/acs.jafc.3c01559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Vitexin, which exists in various medicinal plants and food sources, has recently received increasing attention because of its anti-inflammatory properties. This study aims to identify the protein target of vitexin that ameliorates dextran sulfate sodium (DSS)-induced colitis. The results showed that vitexin not only alleviated the clinical symptoms and colonic damage in mice with DSS-induced colitis but also suppressed the colonic production of inflammatory cytokines (IL-1β, IL-6, ICAM, and VCAM) and enhanced the expression of barrier-associated proteins (ZO-1, Occludin, and E-cadherin). Based on tissue thermal proteome profiling (Tissue-TPP) and molecular docking, OLA1 was creatively identified as a potential protein target for vitexin. Further siRNA-mediated knockdown of the OLA1 gene in Caco-2 cells demonstrated the ability of OLA1 to increase Nrf2 protein expression and, thus, mediated the anti-inflammatory effects of vitexin. Interaction of the OLA1-vitexin complex with Keap1 protein to disrupt the Keap1-Nrf2 interaction may be required for activating Nrf2. Our findings revealed a novel role for OLA1 as a protein target of vitexin that contributes to its anti-inflammatory action by activating Nrf2, which may provide a promising molecular mechanism for novel therapeutic strategies to treat colitis and the associated systemic inflammation.
Collapse
Affiliation(s)
- Nan Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, China
| | - Ruiyan Wang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, China
| | - Wenwen Li
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, China
| | - Qian Du
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, China
| | - Zeyuan Deng
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, China
- Institute for Advanced Study, University of Nanchang, Nanchang 330031, Jiangxi, China
| | - Yawei Fan
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, China
| | - Liufeng Zheng
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, China
| |
Collapse
|
6
|
Sousa JN, Queiroz LDRP, de Paula AMB, Guimarães ALS, Lescano CH, Aguilar CM, Pires de Oliveira I, Santos SHS. Gallic acid as a Sestrin (SESN2) activator and potential obesity therapeutic agent: A molecular docking study. Gene 2023; 883:147683. [PMID: 37536400 DOI: 10.1016/j.gene.2023.147683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/29/2023] [Accepted: 07/31/2023] [Indexed: 08/05/2023]
Abstract
Sestrins (SESNs) are a family of evolutionarily conserved proteins among mammals. They have several body homeostatic functions such as antioxidant, metabolic, and anti-aging, and are required to regenerate hyperoxidized forms of peroxiredoxins and reactive oxygen species. Sestrin 2 has been studied as a therapeutic agent in obesity treatment. Gallic acid (GA) is a triphenolic compound with beneficial biological activities including anti-inflammatory, antidiabetic, antihypertensive, and antioxidant effects. Recent studies demonstrated the GA's ability to reduce body weight gain and improve glycemic parameters. In this sense, the present study aims to investigate the GA activating potential of Sestrin using the molecular docking method. The 3D structure of gallic acid was retrieved from the NCBI PubChem database and the chemical structure of the Sestrin2 protein from the RCSB Protein Data Bank (5DJ4). The docking calculus was performed via UCSF Chimera and AutoDock Vinaprograms. The results showed that amino acids Arg390, Glu451, Trp444, Thr386, Arg448, Thr374, Tyr375, Asn376, Thr377, Leu389, His454, Ser450, His86, and Val455 are very important for GA stabilization, resembling the interactions that permit Leucine to activate SESN2. In this context, the obesity therapeutic property of GA can be understood from a Sestrin activating process through amino acid metabolism.
Collapse
Affiliation(s)
- Jaciara Neves Sousa
- Laboratory of Health Science, Postgraduate Program in Health Science, UniversidadeEstadual de Montes Claros (Unimontes), Minas Gerais, Brazil
| | - Lorena Dos Reis Pereira Queiroz
- Laboratory of Health Science, Postgraduate Program in Health Science, UniversidadeEstadual de Montes Claros (Unimontes), Minas Gerais, Brazil
| | - Alfredo Maurício Batista de Paula
- Laboratory of Health Science, Postgraduate Program in Health Science, UniversidadeEstadual de Montes Claros (Unimontes), Minas Gerais, Brazil
| | - André Luiz Sena Guimarães
- Laboratory of Health Science, Postgraduate Program in Health Science, UniversidadeEstadual de Montes Claros (Unimontes), Minas Gerais, Brazil
| | - Caroline Honaiser Lescano
- Institute of Agricultural Sciences (ICA), Food Engineering, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Charles Martins Aguilar
- Institute of Agricultural Sciences (ICA), Food Engineering, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Ivan Pires de Oliveira
- Institute of Agricultural Sciences (ICA), Food Engineering, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil
| | - Sérgio Henrique Sousa Santos
- Laboratory of Health Science, Postgraduate Program in Health Science, UniversidadeEstadual de Montes Claros (Unimontes), Minas Gerais, Brazil; Institute of Agricultural Sciences (ICA), Food Engineering, Universidade Federal de Minas Gerais (UFMG), Montes Claros, Minas Gerais, Brazil.
| |
Collapse
|
7
|
He M, Fan M, Yang W, Peng Z, Wang G. Novel kojic acid-1,2,4-triazine hybrids as anti-tyrosinase agents: Synthesis, biological evaluation, mode of action, and anti-browning studies. Food Chem 2023; 419:136047. [PMID: 37018861 DOI: 10.1016/j.foodchem.2023.136047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/20/2023] [Accepted: 03/25/2023] [Indexed: 04/05/2023]
Abstract
A class of new kojic acid hybrids (7a-7o) bearing a 1,2,4-triazine moiety were prepared, and their inhibitory activities and mechanism on tyrosinase were investigated. All derivatives showed good to excellent anti-tyrosinase activity with IC50 values ranging from 0.34 ± 0.06 μM to 8.44 ± 0.73 μM. In kinetic study, compound 7m was a mixed-type inhibitor with Ki and Kis of 0.73 and 1.27 μM, respectively. The interaction mechanism toward tyrosinase of compound 7m was further elaborated in combination with molecular docking and various spectral techniques. The results showed that compound 7m could change the secondary structure of tyrosinase to reduce its catalytic activity. Anti-browning assays demonstrated that 7m inhibited the browning of bananas effectively during storage. What's more, 7m was found to have low cytotoxicity in vitro. In conclusion, compound 7m has the potential to be applied as an anti-browning agent.
Collapse
|
8
|
He Y, Yeo IKX, Guo C, Kai Y, Lu Y, Yang H. Elucidating the inhibitory mechanism on polyphenol oxidase from mushroom and melanosis formation by slightly acid electrolysed water. Food Chem 2023; 404:134580. [DOI: 10.1016/j.foodchem.2022.134580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 09/13/2022] [Accepted: 10/08/2022] [Indexed: 11/06/2022]
|
9
|
Bio-Assay Guided Isolation of Flavonoids from Scutellaria barbata D. Don and Their Mechanism of α-Glucosidase Inhibition. Pharm Chem J 2022. [DOI: 10.1007/s11094-022-02695-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
10
|
The inhibitory kinetics and mechanism of quercetin-3-O-rhamnoside and chlorogenic acid derived from Smilax china L. EtOAc fraction on xanthine oxidase. Int J Biol Macromol 2022; 213:447-455. [PMID: 35660039 DOI: 10.1016/j.ijbiomac.2022.05.188] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/19/2022] [Accepted: 05/30/2022] [Indexed: 01/13/2023]
Abstract
Smilax china L. showed various biological activities mainly due to its phenolic components; however, the mechanism of isolated phenolic fraction against xanthine oxidase (XO) has not been investigated. Quercetin-3-O-rhamnoside (QORh) and chlorogenic acid (CGA) extracted from Smilax china L. ethyl acetate fraction was analyzed for its XO inhibitory kinetics and mechanism using multispectroscopic methods and molecular docking techniques. QORh and CGA reversibly inhibited XO activity in competitive and non-competitive modes, respectively. The bioactive compounds bound with XO were dominated mainly by hydrogen bonds and van der Waals forces to form QORh-XO, and CGA-XO complexes with one affinity binding site. The synchronous fluorescence, circular dichroism, three-dimensional (3D) fluorescence, and Fourier transform infrared spectra exhibited that XO binding with QORh or CGA leads to the secondary and tertiary structural variation of the protein. Additionally, molecular docking further revealed that QORh binds to the active site of XO and forms hydrogen coupling with amino acid residues. The results showed that QORh and CGA had inhibitory activity on XO, which might be further used to modify the bioactive compounds and improve their efficacy to treat gout.
Collapse
|
11
|
Xu H, Li X, Mo L, Zou Y, Zhao G. Tyrosinase inhibitory mechanism and the anti-browning properties of piceid and its ester. Food Chem 2022; 390:133207. [PMID: 35594768 DOI: 10.1016/j.foodchem.2022.133207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 05/06/2022] [Accepted: 05/10/2022] [Indexed: 01/12/2023]
Abstract
Different mechanisms for inhibiting tyrosinase can be exploited to avoid quality losses caused by the enzymatic browning of fruits and vegetables. Piceid (PI) and piceid 6″-O- azelaic acid ester (PIA) are oxidized by tyrosinase; however, their oxidation products may have inhibitory effects on tyrosinase. This notion is because l-DOPA oxidation was inhibited after the pre-incubation of PI/PIA with tyrosinase, however, l-DOPA oxidation was not affected if this pre-incubation was not performed. Circular dichroism analysis indicated a conformational change in the secondary structure of tyrosinase after pre-incubation. Further, molecular docking and enzyme reaction kinetics assays were employed to reveal the mechanism underlying the effects of PI/PIA on tyrosinase in the absence of pre-incubation with tyrosinase. PI/PIA had anti-browning effects in the potato models. The increased rate of A420 in PI/PIA groups at 24 h were 281% and 279%, which were approximately 2.4- and 2.5-fold lower than that of control (668%).
Collapse
Affiliation(s)
- Haixia Xu
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong 510640, China
| | - Xiaofeng Li
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong 510640, China.
| | - Lan Mo
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong 510640, China
| | - Yucong Zou
- College of Food Science and Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong 510640, China
| | - Guanglei Zhao
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Wushan Road 381, Guangzhou, Guangdong 510640, China.
| |
Collapse
|
12
|
Du H, Li SJ. Inhibition of porphyra polysaccharide on xanthine oxidase activity and its inhibition mechanism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 266:120446. [PMID: 34628362 DOI: 10.1016/j.saa.2021.120446] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/18/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Xanthine oxidase (XO) is a purine catabolic enzyme related to hyperuricemia and gout. Porphyra polysaccharide (PP) is a kind of sulfated polysaccharide with potent biological activity. Herein, the interaction mechanism between PP and XO was studied by enzyme kinetics and multi-spectroscopy methods for the first time. Inhibition kinetics assay showed that PP reversibly inhibited XO activity in a mixed competitive manner with an IC50 of 10.53 ± 0.69 mg/ml. Fluorescence titration studies and thermodynamic parameter calculations revealed that PP could spontaneously bind to XO through hydrophobic interactions, with a class of binding site. Circular dichroism analysis demonstrated that PP induced secondary structure rearrangement and conformational change of XO. Molecular docking further revealed that PP inserted into the hydrophobic cavity of XO, occupying the catalytic center, leading to the inhibition of XO activity. This study may provide new insights into the inhibitory mechanism of PP as a promising XO inhibitor.
Collapse
Affiliation(s)
- Hongyan Du
- Department of Biophysics, School of Physical Science, The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, Tianjin 300071, PR China
| | - Shu Jie Li
- Department of Biophysics, School of Physical Science, The Key Laboratory of Bioactive Materials, Ministry of Education, Nankai University, Tianjin 300071, PR China; Qilu Institute of Technology, Shandong 250200, PR China.
| |
Collapse
|
13
|
Abe JI, Yoshinaga K. Inhibition of Agaricus tyrosinase by 1, 5-anhydro-D-fructose and its application to anti-browning of food materials. J JPN SOC FOOD SCI 2022. [DOI: 10.3136/nskkk.69.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
14
|
Structure related α-glucosidase inhibitory activity and molecular docking analyses of phenolic compounds from Paeonia suffruticosa. Med Chem Res 2022. [DOI: 10.1007/s00044-021-02830-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
15
|
In vitro cytotoxicity assay, mushroom tyrosinase inhibitory activity and release analysis of kojic monooleate nanodelivery system and in silico molecular docking study against 2Y9X target enzyme. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102764] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
16
|
Zhang Y, Ge L, Song G, Zhang R, Li S, Shi H, Zhang H, Li Y, Pan J, Wang L, Han J. Azithromycin alleviates the severity of rheumatoid arthritis by targeting the UPR component GRP78. Br J Pharmacol 2021; 179:1201-1219. [PMID: 34664264 DOI: 10.1111/bph.15714] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 09/12/2021] [Accepted: 09/27/2021] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND AND PURPOSE Azithromycin (AZM) is a macrolide antibiotic with well-described anti-inflammatory properties. This study aimed to substantiate the treatment potential of AZM in rheumatoid arthritis (RA). EXPERIMENTAL APPROACH Gene expression profiles were collected by RNA sequencing, and the effects of AZM were assessed in functional assays. In vitro and in vivo assays were performed to examine the effects of AZM-mediated blockade of glucose-regulated protein 78 (GRP78). Assays to define the anti-inflammatory activity of AZM using fibroblast-like synoviocytes (FLSs) from RA patients and collagen-induced arthritis (CIA) in DBA/1 mice were performed. Identification and characterization of the binding of AZM to GRP78 was performed using drug affinity responsive target stability assays, proteomics and cellular thermal shift assays. AZM-mediated inhibition of GRP78 and the dependence of the antiarthritic activity of AZM on GRP78 were assessed. KEY RESULTS AZM reduced proinflammatory factor production, cell migration, invasion and chemoattraction and enhanced apoptosis, thereby reducing the deleterious inflammatory response of RA FLSs in vitro. AZM ameliorated the severity of CIA lesions as efficiently as the anti-tumour necrosis factor (anti-TNF) biological agent etanercept (ETC). Transcriptional analyses suggested that AZM treatment impairs signalling cascades associated with cholesterol and lipid biosynthetic processes. GRP78 was identified as a novel target of AZM. AZM-mediated activation of the unfolded protein response (UPR) via the inhibition of GRP78 activity is required not only for inducing the expression of C/EBP-homologous protein (ChOP) but also for the activating sterol-regulatory element binding protein (SREBP) and its targeted genes involved in cholesterol and lipid biosynthetic processes. Furthermore, deletion of GRP78 abolished the antiarthritic activity of AZM. CONCLUSION AND IMPLICATIONS These findings confirmed that AZM is a therapeutic drug for RA treatment.
Collapse
Affiliation(s)
- Yongli Zhang
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Key Lab for Biotech-Drugs of National Health Commission, Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Luna Ge
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Key Lab for Biotech-Drugs of National Health Commission, Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China.,Department of Rheumatology and Autoimmunology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Guanhua Song
- Institute of Basic Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Ruojia Zhang
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Key Lab for Biotech-Drugs of National Health Commission, Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Shufeng Li
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Haojun Shi
- The second clinical medical college, Henan University of Chinese Medicine, Zhengzhou, China
| | - Hongchang Zhang
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Key Lab for Biotech-Drugs of National Health Commission, Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China
| | - Yi Li
- Department of Joint Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Jihong Pan
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Key Lab for Biotech-Drugs of National Health Commission, Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China.,Department of Rheumatology and Autoimmunology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Lin Wang
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Key Lab for Biotech-Drugs of National Health Commission, Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China.,Department of Rheumatology and Autoimmunology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Jinxiang Han
- Biomedical Sciences College & Shandong Medicinal Biotechnology Centre, Key Lab for Biotech-Drugs of National Health Commission, Key Lab for Rare & Uncommon Diseases of Shandong Province, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China.,Department of Rheumatology and Autoimmunology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| |
Collapse
|
17
|
Vaezi M. Evaluation of quercetin omega-6 and -9 esters on activity and structure of mushroom tyrosinase: Spectroscopic and molecular docking studies. J Food Biochem 2021; 45:e13953. [PMID: 34585423 DOI: 10.1111/jfbc.13953] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 09/09/2021] [Accepted: 09/14/2021] [Indexed: 12/21/2022]
Abstract
Quercetin is one of the most ubiquitous dietary flavonoids widely distributed in plants and foods of plant origin, and is a potent tyrosinase inhibitor. Quercetin fatty esters could lead to an improve in quercetin lipophilicity which could positively affect its pharmacological activity. In this study, the inhibitory effect of two novel esters of quercetin-linoleic acid (ligand A) and quercetin-oleic acid (ligand B) has been investigated on structure and diphenolase activity of mushroom tyrosinase (MT) by experimental and molecular docking techniques. The inhibitory kinetics study using UV-visible spectrophotometry in the presence of its substrate 3,4-dihydroxyphenylalanine (L-dopa), revealed that both esters successfully inhibit the activity of tyrosinase and reduce the formation of dopaquinone. Results showed that the binding of ligands to MT induced rearrangement and conformational changes of the enzyme. Thermodynamic parameters of these interactions (Ka , ∆G°, ∆H° and ∆S°) were obtained at pH = 6.8 and temperatures of 298 and 310 K. Molecular docking studies further was applied to calculation of binding energies (ΔGbA = -21.84 kJ/mol, ΔGbB = -20.92 kJ/mol), inhibition constant values (KIA = 160 µM, KIB = 220 µM) and the special binding site. It can be deduced that ligands act as a potential tyrosinase inhibitor and it was found that the best possible interaction condition with binding modes visualize was achieved by ligand A and exhibited the potent tyrosinase inhibitory activity. These findings may be helpful to understand the inhibition mechanism of quercetin fatty acids esters on tyrosinase and provide a convenient screening method to differentiate phenolic tyrosinase inhibitors. PRACTICAL APPLICATIONS: Bioavailability and antioxidant activity of conjugated fatty acids with their bioequivalence in several biological effects and metabolic processes such as beta-oxidation from various forms has been reported to be highly variable and useful. Quercetin shows beneficial role in human health, but its biological effects in vivo is limited by poor bioavailability, low skin permeability and solubility. This study design new tyrosinase inhibitors which helpful to functional research of unsaturated fatty acid esters in the treatment of inflammatory diseases and hyperpigmentation disorders. In addition, undesirable enzymatic browning of plant derived-foods by tyrosinase causes a decrease in market value and economic loss of food products. The results suggest that the conjugation of quercetin with linoleic and oleic acids resulted in novel stronger tyrosinase inhibitors which may have therapeutic applications and replacement of toxic tyrosinase inhibitors and contribute as anti- browning agents in food, cosmetic and pharmaceutical industry.
Collapse
Affiliation(s)
- Morteza Vaezi
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
| |
Collapse
|
18
|
Canavieira LM, Brasil EM, Silva TDME, Borges RDS, Silva JRA, Lameira J, Bernhardt PV, Williams CM, Alves CN. Experimental and theoretical approaches for the development of 4H-Chromene derivatives as inhibitors of tyrosinase. MOLECULAR SIMULATION 2021. [DOI: 10.1080/08927022.2021.1926455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Luciana Morais Canavieira
- Programa de Pós-Graduação em Biotecnologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
| | - Edikarlos Macedo Brasil
- Peptide Science Laboratory, School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa
| | - Thiago de Melo e Silva
- Programa de Pós-Graduação em Química, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Brazil
| | - Rosivaldo dos Santos Borges
- Núcleo de Estudos e Seleção de Moléculas Bioativas, Instituto de Ciências da Saúde, Universidade Federal do Pará, Belém, Brazil
| | - José Rogério Araújo Silva
- Programa de Pós-Graduação em Química, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Brazil
| | - Jerônimo Lameira
- Programa de Pós-Graduação em Biotecnologia, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil
- Programa de Pós-Graduação em Química, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Brazil
| | - Paul V. Bernhardt
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland, Australia
| | - Craig M. Williams
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland, Australia
| | - Cláudio Nahum Alves
- Programa de Pós-Graduação em Química, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, Brazil
| |
Collapse
|
19
|
REN H, DU N, NIU X, WANG Y, TIAN H, CAO Y, ZHANG B, FAN W. Inhibitory effects of L-3-phenyllacitc acid on the activity of mushnroom pholyphenol oxidase. FOOD SCIENCE AND TECHNOLOGY 2021. [DOI: 10.1590/fst.08420] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Nana DU
- Lanzhou University of Technology, China
| | | | | | - Hui TIAN
- Lanzhou University of Technology, China
| | | | | | | |
Collapse
|
20
|
Xu H, Li X, Xin X, Mo L, Zou Y, Zhao G, Yu Y, Chen K. Antityrosinase Mechanism and Antimelanogenic Effect of Arbutin Esters Synthesis Catalyzed by Whole-Cell Biocatalyst. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:4243-4252. [PMID: 33821640 DOI: 10.1021/acs.jafc.0c07379] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Tyrosinase is a key enzyme responsible for enzymatic browning of fruits and vegetables and skin disorders due to overproduction of melanin. Arbutin is an inhibitor of tyrosinase; however, its high polarity and weak transdermal absorption capacity limit its applications. In this paper, a green solvent system was developed to successfully synthesize arbutin esters with improved liposolubilities (Clog P values = 0.27-5.03). Among the obtained esters, arbutin undecenoate (AU) showed the strongest tyrosinase-inhibiting activity (15.6%), which was 9.0 times higher than that of arbutin. An enzyme kinetics study indicated that AU was a competitive inhibitor with reversible inhibition. The esters inhibited tyrosinase by making the secondary structure of tyrosinase looser and less stable; moreover, the interactions between tyrosinase and AU driven by metal interactions and hydrogen bonds also offered a mechanism for inhibition of AU on tyrosinase. In addition, AU (100 μM) reduced the melanin content of B16 mouse melanoma cells to 61.3% of the control group.
Collapse
Affiliation(s)
- Haixia Xu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xiaofeng Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xuan Xin
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lan Mo
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yucong Zou
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Guanglei Zhao
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yigang Yu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Kebing Chen
- Department of Spine Surgery, Center for Orthopaedic Surgery, The Third Affiliated Hospital of Southern Medical University, Academy of Orthopedics of Guangdong Province, Guangzhou 510630, China
| |
Collapse
|
21
|
Song S, Liu Q, Chai WM, Xia SS, Yu ZY, Wei QM. Inhibitory potential of 4-hexylresorcinol against α-glucosidase and non-enzymatic glycation: Activity and mechanism. J Biosci Bioeng 2020; 131:241-249. [PMID: 33191127 DOI: 10.1016/j.jbiosc.2020.10.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 12/26/2022]
Abstract
Inhibition of α-glucosidase as well as non-enzymatic glycation is thought as an effective method for treating type-2 diabetes mellitus. In this study, we investigated the inhibitory potential and mechanism of 4-hexylresorcinol against α-glucosidase and non-enzymatic glycation by using multispectroscopic analyses and molecular docking. The results of enzyme kinetics showed that 4-hexylresorcinol reversibly inhibited α-glucosidase activity in a noncompetitive way. Fluorescence quenching then revealed that it increased the hydrophobicity of α-glucosidase and changed the conformation of the enzyme by forming the α-glucosidase-hexylresorcinol complex. Thermodynamic analysis and molecular docking further demonstrated that the inhibition of 4-hexylresorcinol on the α-glucosidase was mainly dependent on hydrogen bond and hydrophobic interaction. Moreover, the 4-hexylresorcinol moderately inhibited the formation of fructosamine, and strongly suppressed the generation of α-dicarbonyl compounds and advanced glycation end products (AGEs). The interaction between 4-hexylresorcinol and bovine serum albumin was mainly driven by hydrophobic interaction. This study showed a novel inhibitor of α-glucosidase as well as non-enzymatic glycation, and provided a drug candidate for the prevention and treatment of type-2 diabetes.
Collapse
Affiliation(s)
- Shuang Song
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Qing Liu
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Wei-Ming Chai
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China.
| | - Si-Shi Xia
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Zi-Yi Yu
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| | - Qi-Ming Wei
- College of Life Science and Key Laboratory of Functional Small Organic Molecule, Ministry of Education, Jiangxi Normal University, Nanchang, Jiangxi 330022, People's Republic of China
| |
Collapse
|
22
|
Li S, Yin L, Yi J, Zhang LM, Yang L. Insight into interaction mechanism between theaflavin-3-gallate and α-glucosidase using spectroscopy and molecular docking analysis. J Food Biochem 2020; 45:e13550. [PMID: 33150631 DOI: 10.1111/jfbc.13550] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 10/03/2020] [Accepted: 10/12/2020] [Indexed: 11/29/2022]
Abstract
To elucidate the α-glucosidase (α-GC) inhibitory mechanism of theaflavin-3-gallate (TF-3-G), their interaction mechanism was investigated using spectroscopy and molecular docking analysis. The inhibition ratio of TF-3-G against α-GC was determined to be 92.3%. Steady fluorescence spectroscopy showed that TF-3-G effectively quenched the intrinsic fluorescence of α-GC through static quenching, forming a stable complex through hydrophobic interactions. Formation of the TF-3-G/α-GC complex was also confirmed by resonance light scattering spectroscopy. Synchronous fluorescence spectroscopy and circular dichroism spectroscopy indicated that the secondary structure of α-GC was changed by TF-3-G. Molecular docking was used to simulate TF-3-G/α-GC complex formation, showing that TF-3-G might be inserted into the hydrophobic region around the active site of ɑ-GC, and bind with the catalytic Asp215 and Asp352 residues. The ɑ-GC inhibitory mechanism of TF-3-G was mainly attributed to the change in ɑ-GC secondary structure caused by the complex formation. PRACTICAL APPLICATIONS: α-Glucosidase (α-GC) can hydrolyze the glycosidic bonds of starch and oligosaccharides in food and release glucose. Therefore, the inhibition of α-GC activity has been used to treat postprandial hyperglycemia and type 2 diabetes mellitus. Theaflavin-3-gallate (TF-3-G), a flavonoid found in the fermentation products of black tea, exhibits strong inhibition of α-GC activity. However, the α-GC inhibitory mechanism of TF-3-G is unclear. This study aids understanding of this mechanism, and proposed a possibly basic theory for improving the medicinal value of TF-3-G in diabetes therapy.
Collapse
Affiliation(s)
- Siyuan Li
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, China
| | - Lin Yin
- Department of Polymer and Material Science, School of Chemistry, Sun Yat-sen University, Guangzhou, China
| | - Juzhen Yi
- Department of Polymer and Material Science, School of Chemistry, Sun Yat-sen University, Guangzhou, China.,Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Provincial Key Laboratory for High Performance Polymer-based Composites, Sun Yat-sen University, Guangzhou, China
| | - Li-Ming Zhang
- School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, China.,Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Provincial Key Laboratory for High Performance Polymer-based Composites, Sun Yat-sen University, Guangzhou, China
| | - Liqun Yang
- Department of Polymer and Material Science, School of Chemistry, Sun Yat-sen University, Guangzhou, China.,Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Provincial Key Laboratory for High Performance Polymer-based Composites, Sun Yat-sen University, Guangzhou, China
| |
Collapse
|
23
|
Han QY, Liu F, Wen X, Ni YY. Kinetic, spectroscopic, and molecular docking studies on the inhibition of membrane-bound polyphenol oxidase from Granny Smith apples (Malus domestica Borkh.). Food Chem 2020; 338:127928. [PMID: 32919374 DOI: 10.1016/j.foodchem.2020.127928] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/11/2020] [Accepted: 08/23/2020] [Indexed: 02/09/2023]
Abstract
We investigated the inhibitory effect and binding mechanism of four selected compounds (ascorbic acid, l-cysteine, glutathione, and citric acid) on membrane-bound polyphenol oxidases (mPPO) using spectroscopic and molecular docking techniques. Kinetic analysis demonstrated that these inhibitors reversibly inhibited the mPPO activity. Fluorescence spectroscopy revealed that the intrinsic fluorescence intensity of mPPO was quenched by inhibitors with a single class of the inhibition site on mPPO. Amino acid residues His 180, His 201, His 366, Cys 184, Glu 328, and Asn 333 were the important binding sites in the active center. These sites were identified using molecular docking techniques. Our findings suggested that the inhibitors were allosterically bound to the active center of mPPO through hydrogen bonds and ion contacts. This study provides new insights into the active site residues responsible for catalyzing mPPO and provides applicable information about the design of mPPO inhibitors.
Collapse
Affiliation(s)
- Qian-Yun Han
- College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Qinghua East Road, Beijing 100083, China; National Engineering Research Center for Fruits and Vegetables Processing, Beijing 100083, China; Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China
| | - Fang Liu
- College of Food Science and Engineering, Northwest A & F University, Yang Ling, Shaanxi 712100, China
| | - Xin Wen
- College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Qinghua East Road, Beijing 100083, China; National Engineering Research Center for Fruits and Vegetables Processing, Beijing 100083, China; Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China
| | - Yuan-Ying Ni
- College of Food Science and Nutritional Engineering, China Agricultural University, No. 17 Qinghua East Road, Beijing 100083, China; National Engineering Research Center for Fruits and Vegetables Processing, Beijing 100083, China; Key Laboratory of Fruits and Vegetables Processing, Ministry of Agriculture, Beijing 100083, China.
| |
Collapse
|
24
|
Bito T, Koseki K, Asano R, Ueda N, Yamada T, Yabuta Y, Ichiyanagi T, Ishihara A, Watanabe K, Watanabe F. 5-hydroxymethyl-2-furaldehyde purified from Japanese pear ( Pyrus pyrifolia Nakai cv. Nijisseiki) juice concentrate inhibits melanogenesis in B16 mouse melanoma cells. Biosci Biotechnol Biochem 2020; 84:2374-2384. [PMID: 32674671 DOI: 10.1080/09168451.2020.1792762] [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] [Indexed: 01/02/2023]
Abstract
Pear juice concentrate prepared by boiling Japanese pear (Pyrus pyrifolia Nakai cv. Nijisseiki) juice can significantly inhibit the activity of tyrosinase, a key enzyme in melanin synthesis in human skin. Using the ethanol extract of pear juice concentrate, we homogeneously purified an active compound that was identified as 5-hydroxymethyl-2-furaldehyde (5-HMF) through 1H- and 13C-NMR and mass spectroscopy. We observed that 5-HMF inhibited the monophenolase and diphenolase activities of mushroom tyrosinase as a mixed-type inhibitor (K i values of 3.81 and 3.70 mmol/L, respectively). In B16 mouse melanoma cells, treatment with 170 µmol/L of 5-HMF significantly reduced α-melanocyte-stimulated melanin synthesis by suppressing the cyclic adenosine monophosphate-dependent signaling pathway involved in melanogenesis. The results of our study indicated that 5-HMF can be potentially used as a skin-lightening agent in the cosmetic industry. Abbreviations: AC: adenylate cyclase; CREB: cAMP response element-binding protein; dhFAME: S-(-)-10,11-Dihydroxyfarnesoic acid methyl ester; DMEM: dulbecco's modified eagle medium; l-DOPA: 3-(3,4-Dihydroxyphenyl)- l-alanine; GAPDH: glyceraldehyde-3-phosphate dehydrogenase; HEPES: 4-(2-Hydroxyethyl)-1-piperazine ethane sulfonic acid; 5-HMF: 5-Hydroxymethyl-2-furaldehyde; MITF: microphthalmia-associated transcription factor; α-MSH: α-Melanocyte-stimulating hormone; PKA: protein kinase A; PVDF: polyvinylidene difluoride; SDS: sodium dodecyl sulfate; TRP1: tyrosinase-related protein 1; TRP2: tyrosinase-related protein 2.
Collapse
Affiliation(s)
- Tomohiro Bito
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University , Tottori, Japan
| | - Kyohei Koseki
- Department of Agricultural Science, Graduate School of Sustainability Science, Tottori University , Tottori, Japan
| | - Ryota Asano
- Department of Agricultural Science, Graduate School of Sustainability Science, Tottori University , Tottori, Japan
| | - Nakaba Ueda
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University , Tottori, Japan
| | - Takuhiro Yamada
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University , Tottori, Japan
| | - Yukinori Yabuta
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University , Tottori, Japan
| | - Tsuyoshi Ichiyanagi
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University , Tottori, Japan
| | - Atsushi Ishihara
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University , Tottori, Japan
| | - Kishi Watanabe
- Department of Quality Control, Yawata Corporation , Yonago, Tottori, Japan
| | - Fumio Watanabe
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University , Tottori, Japan
| |
Collapse
|
25
|
Zhao J, Huang L, Sun C, Zhao D, Tang H. Studies on the structure-activity relationship and interaction mechanism of flavonoids and xanthine oxidase through enzyme kinetics, spectroscopy methods and molecular simulations. Food Chem 2020; 323:126807. [PMID: 32330646 DOI: 10.1016/j.foodchem.2020.126807] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/25/2020] [Accepted: 04/13/2020] [Indexed: 12/14/2022]
Abstract
In this study, some flavonoids were screened as potent xanthine oxidase (XO) inhibitors in vitro. Flavonoid 9 was demonstrated to exhibit the inhibitory activity through a ping-pong mechanism. Further structure-activity relationship revealed that different structural elements had greatly influenced the inhibition effect on XO and underlined the requirement of hydroxyl groups at C5 and C4' of flavonoid type I. Moreover, some bioactive flavonoids could efficiently quench the intrinsic fluorescence of XO by either static or static-dynamic mixed mechanism. The synchronous fluorescence, ANS-binding fluorescence, Fourier transform infrared spectra and circular dichroism suggested that active flavonoids could bind to the active center of XO, prevent the entrance of substrate, and induce the rearrangement and conformation change of its secondary structures, ultimately resulting in the significant inhibition effect. Additionally, molecular docking further confirmed these conclusions and highlighted the great importance of hydrophobic interactions and hydrogen bonds for the formation of stable complex conformation.
Collapse
Affiliation(s)
- Jie Zhao
- College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 241000, PR China
| | - Lin Huang
- Blood Purification Center, Affiliated Yijishan Hospital of Wannan Medical College, Wuhu 241001, PR China
| | - Chunyong Sun
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, PR China
| | - Dongsheng Zhao
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, PR China.
| | - Hongjin Tang
- College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 241000, PR China.
| |
Collapse
|
26
|
Pramanik U, Khamari L, Shekhar S, Mukherjee S. On the role of hydrophobic interactions between chloramphenicol and bovine pancreatic trypsin: The effect of a strong electrolyte. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137137] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
27
|
Parveen N, Ali SA, Ali AS. Insights Into the Explication of Potent Tyrosinase Inhibitors with Reference to Computational Studies. LETT DRUG DES DISCOV 2019. [DOI: 10.2174/1570180815666180803111021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background:
Pigment melanin has primarily a photo defensive role in human skin, its
unnecessary production and irregular distribution can cause uneven skin tone ultimately results in
hyper pigmentation. Melanin biosynthesis is initiated by tyrosine oxidation through tyrosinase, the
key enzyme for melanogenesis. Not only in humans, tyrosinase is also widely distributed in plants
and liable for browning of vegetables and fruits. Search for the inhibitors of tyrosinase have been
an important target to facilitate development of therapies for the prevention of hyperpigmentary
disorders and an undesired browning of vegetables and fruits.
Methods:
Different natural and synthetic chemical compounds have been tested as potential tyrosinase
inhibitors, but the mechanism of inhibition is not known, and the quest for information regarding
interaction between tyrosinase and its inhibitors is one of the recent areas of research. Computer
based methods hence are useful to overcome such issues. Successful utilization of in silico tools
like molecular docking simulations make it possible to interpret the tyrosinase and its inhibitor’s
intermolecular interactions and helps in identification and development of new and potent tyrosinase
inhibitors.
Results:
The present review has pointed out the prominent role of computer aided approaches for
the explication of promising tyrosinase inhibitors with a focus on molecular docking approach.
Highlighting certain examples of natural compounds whose antityrosinase effects has been evaluated
using computational simulations.
Conclusion:
The investigation of new and potent inhibitors of tyrosinase using computational
chemistry and bioinformatics will ultimately help millions of peoples to get rid of hyperpigmentary
disorders as well as browning of fruits and vegetables.
Collapse
Affiliation(s)
- Naima Parveen
- Department of Biotechnology and Zoology, Saifia College of Science, Bhopal 462001, India
| | - Sharique Akhtar Ali
- Department of Biotechnology and Zoology, Saifia College of Science, Bhopal 462001, India
| | - Ayesha Sharique Ali
- Department of Biotechnology and Zoology, Saifia College of Science, Bhopal 462001, India
| |
Collapse
|
28
|
Zhou L, Liao T, Liu J, Zou L, Liu C, Liu W. Unfolding and Inhibition of Polyphenoloxidase Induced by Acidic pH and Mild Thermal Treatment. FOOD BIOPROCESS TECH 2019. [DOI: 10.1007/s11947-019-02354-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
29
|
Tang H, Ma F, Zhao D. Integrated multi-spectroscopic and molecular modelling techniques to probe the interaction mechanism between salvianolic acid A and α‑glucosidase. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 218:51-61. [PMID: 30954797 DOI: 10.1016/j.saa.2019.03.109] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 03/21/2019] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
α-Glucosidase (AG) is an important drug target for the treatment of type 2 diabetes mellitus in humans due to the potential effect of down regulating glucose absorption in patients. In our previous study, salvianolic acid A (SAA) was found to exhibit potent AG inhibitory activity, whereas the interaction mechanism was still ambiguous. Herein, the interaction mechanism of SAA and AG was investigated by multi-spectroscopic methods along with molecular docking. As a result, it was found that SAA reversibly inhibited AG in a competitive manner with IC50 of 16.44 ± 0.18 μM, and the inhibition belonged to a multi-phase kinetics process with a first-order reaction. The intrinsic fluorescence of AG could be strongly quenched by SAA through a static quenching mechanism. The negative Gibbs free energy change and positive values of enthalpy and entropy change revealed that the binding of SAA to AG was spontaneous and dominated mainly by hydrophobic interactions, and only a single binding site was determined for them. Analysis of synchronous fluorescence, ANS-binding fluorescence, circular dichroism and Fourier transform infrared spectra suggested that the binding of SAA to AG induced rearrangement and conformational changes of the enzyme. Besides, further molecular modelling validated that SAA could bind to the active domain and prevent the entrance of substrate, resulting in the inhibition of AG activity. These findings provide new insights into understanding the interaction mechanism of SAA on AG.
Collapse
Affiliation(s)
- Hongjin Tang
- College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 241000, PR China.
| | - Fei Ma
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, PR China
| | - Dongsheng Zhao
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, PR China
| |
Collapse
|
30
|
Anti-melanization effects and inhibitory kinetics of tyrosinase of bird's nest fern (Asplenium australasicum) frond extracts on melanoma and human skin. J Biosci Bioeng 2019; 127:738-743. [DOI: 10.1016/j.jbiosc.2018.11.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 10/02/2018] [Accepted: 11/09/2018] [Indexed: 12/13/2022]
|
31
|
Wang R, Wang G, Xia Y, Sui W, Si C. Functionality study of lignin as a tyrosinase inhibitor: Influence of lignin heterogeneity on anti-tyrosinase activity. Int J Biol Macromol 2019; 128:107-113. [DOI: 10.1016/j.ijbiomac.2019.01.089] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/18/2019] [Accepted: 01/20/2019] [Indexed: 12/28/2022]
|
32
|
Fang Y, Wang S, Wu J, Zhang L, Wang Z, Gan L, He J, Shi H, Hou J. The kinetics and mechanism of α-glucosidase inhibition by F5-SP, a novel compound derived from sericin peptides. Food Funct 2018; 8:323-332. [PMID: 28045172 DOI: 10.1039/c6fo01215a] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The inhibition of α-glucosidase decreases postprandial blood glucose and therefore plays an important role in the treatment of type 2 diabetes mellitus. The present study investigated and characterized a peptide fraction of sericin hydrolysate, the kinetics of peptide-induced inhibition of α-glucosidase, and the interaction mechanism between the peptides and α-glucosidase. The fraction that eluted with 0.4 M NaCl (F5-SPs) on a DEAE-cellulose column exhibited significant inhibitory activity with an IC50 of 41 ± 1.94 μg mL-1. A kinetics analysis revealed that the F5-SP-induced inhibition was a reversible and parabolic mixed-type inhibition with a Ki value of 86.63 ± 0.014 μg mL-1. F5-SPs can bind to α-glucosidase at multiple sites to alter the conformation of α-glucosidase. F5-SPs were found to be rich in Gly, Ser, Glu, Tyr, Arg, and Pro, and had a sericin-conserved sequence SEDSSEVDIDLGNLG, as analyzed by Nano LC-MS/MS. Fluorescence spectra analysis showed that F5-SPs quenched the intrinsic fluorescence of α-glucosidase by a static quenching mechanism, and circular dichroism analysis suggested that the binding of F5-SPs to α-glucosidase resulted in the alteration of the secondary structure of an enzyme. The results of this study support the dietary recommendation of F5-SPs for the treatment of type 2 diabetes.
Collapse
Affiliation(s)
- Yuwen Fang
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Shaoyun Wang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Jinhong Wu
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Li Zhang
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Zhengwu Wang
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Li Gan
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Jiajun He
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Haiming Shi
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Jingli Hou
- Department of Food Science and Engineering, Shanghai Food Safety and Engineering Research Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| |
Collapse
|
33
|
Tan J, Song X, Fu X, Wu F, Hu F, Li H. Combinatorial multispectral, thermodynamics, docking and site-directed mutagenesis reveal the cognitive characteristics of honey bee chemosensory protein to plant semiochemical. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 201:346-353. [PMID: 29763828 DOI: 10.1016/j.saa.2018.04.074] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 04/18/2018] [Accepted: 04/29/2018] [Indexed: 06/08/2023]
Abstract
In the chemoreceptive system of insects, there are always some soluble binding proteins, such as some antennal-specific chemosensory proteins (CSPs), which are abundantly distributed in the chemosensory sensillar lymph. The antennal-specific CSPs usually have strong capability to bind diverse semiochemicals, while the detailed interaction between CSPs and the semiochemicals remain unclear. Here, by means of the combinatorial multispectral, thermodynamics, docking and site-directed mutagenesis, we detailedly interpreted a binding interaction between a plant semiochemical β-ionone and antennal-specific CSP1 from the worker honey bee. Thermodynamic parameters (ΔH < 0, ΔS > 0) indicate that the interaction is mainly driven by hydrophobic forces and electrostatic interactions. Docking prediction results showed that there are two key amino acids, Phe44 and Gln63, may be involved in the interacting process of CSP1 to β-ionone. In order to confirm the two key amino acids, site-directed mutagenesis were performed and the binding constant (KA) for two CSP1 mutant proteins was reduced by 60.82% and 46.80% compared to wild-type CSP1. The thermodynamic analysis of mutant proteins furtherly verified that Phe44 maintained an electrostatic interaction and Gln63 contributes hydrophobic and electrostatic forces. Our investigation initially elucidates the physicochemical mechanism of the interaction between antennal-special CSPs in insects including bees to plant semiochemicals, as well as the development of twice thermodynamic analysis (wild type and mutant proteins) combined with multispectral and site-directed mutagenesis methods.
Collapse
Affiliation(s)
- Jing Tan
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Xinmi Song
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Xiaobin Fu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Fan Wu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China
| | - Fuliang Hu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hongliang Li
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China.
| |
Collapse
|
34
|
Wu H, Zeng W, Chen L, Yu B, Guo Y, Chen G, Liang Z. Integrated multi-spectroscopic and molecular docking techniques to probe the interaction mechanism between maltase and 1-deoxynojirimycin, an α-glucosidase inhibitor. Int J Biol Macromol 2018; 114:1194-1202. [DOI: 10.1016/j.ijbiomac.2018.04.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 04/03/2018] [Accepted: 04/05/2018] [Indexed: 12/16/2022]
|
35
|
Molecular modeling and docking of protease from Bacillus sp. for the keratin degradation. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2017.11.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
36
|
Bito T, Koseki K, Moriguchi T, Sasaki Y, Yabuta Y, Ichiyanagi T, Watanabe F. Cycloalliin Inhibits Melanin Biosynthesis in B16 Mouse Melanoma Cells. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2018. [DOI: 10.3136/fstr.24.627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Tomohiro Bito
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University
| | - Kyohei Koseki
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University
| | - Tomohiro Moriguchi
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University
| | - Yu Sasaki
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University
| | - Yukinori Yabuta
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University
| | - Tsuyoshi Ichiyanagi
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University
| | - Fumio Watanabe
- Department of Agricultural, Life and Environmental Sciences, Faculty of Agriculture, Tottori University
| |
Collapse
|
37
|
Zhou L, Xiong Z, Liu W, Zou L. Different inhibition mechanisms of gentisic acid and cyaniding-3-O-glucoside on polyphenoloxidase. Food Chem 2017; 234:445-454. [DOI: 10.1016/j.foodchem.2017.05.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 03/23/2017] [Accepted: 05/02/2017] [Indexed: 10/19/2022]
|
38
|
Heitz MP, Rupp JW. Determining mushroom tyrosinase inhibition by imidazolium ionic liquids: A spectroscopic and molecular docking study. Int J Biol Macromol 2017; 107:1971-1981. [PMID: 29032215 DOI: 10.1016/j.ijbiomac.2017.10.066] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/30/2017] [Accepted: 10/11/2017] [Indexed: 01/12/2023]
Abstract
The inhibition effects of imidazolium ionic liquids (ILs) on the enzyme kinetics of mushroom tyrosinase is reported. A simple UV-VIS spectrophotometric assay was used to measure the reaction kinetics of the reaction between mushroom tyrosinase and L-dopa. Seven different imidazolium ILs, comprised of 1-alkyl-3-methylimidazolium ([Imn1+], n=2, 4, 6) cations paired with several anions that included Cl-, [NO3-], methanesulfonate ([MeSO3-]), trifluoromethanesulfonate (or triflate, [TFMS-]), and bis(trifluoromethylsulfonyl)imide ([Tf2N-]). Lineweaver-Burk plots were generated from the recovered kcat and Km parameters using four to six substrate concentrations per measurement. The results show that mushroom tyrosinase activity was consistently inhibited by all of the ILs and that the type of inhibition was non-competitive in nearly all cases. Only the data for [Im21+][Tf2N-] suggested that the inhibition mechanism was competitive with the substrate. Molecular docking simulations were performed using AutoDock4.2 and AutoDock Vina and revealed that all cations docked in the L-dopa active site. Anions showed varied results that included locations both within and outside of the active site.
Collapse
Affiliation(s)
- Mark P Heitz
- Department of Chemistry and Biochemistry, The College at Brockport, SUNY, 228, Smith Hall 350 New Campus Drive, Brockport, NY, 14420, United States.
| | - Jason W Rupp
- Department of Chemistry and Biochemistry, The College at Brockport, SUNY, 228, Smith Hall 350 New Campus Drive, Brockport, NY, 14420, United States
| |
Collapse
|
39
|
Brasil EM, Canavieira LM, Cardoso ÉTC, Silva EO, Lameira J, Nascimento JLM, Eifler-Lima VL, Macchi BM, Sriram D, Bernhardt PV, Silva JRA, Williams CM, Alves CN. Inhibition of tyrosinase by 4H-chromene analogs: Synthesis, kinetic studies, and computational analysis. Chem Biol Drug Des 2017; 90:804-810. [PMID: 28390091 DOI: 10.1111/cbdd.13001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 04/03/2017] [Accepted: 04/04/2017] [Indexed: 12/01/2022]
Abstract
Inhibition of mushroom tyrosinase was observed with synthetic dihydropyrano[3,2-b]chromenediones. Among them, DHPC04 displayed the most potent tyrosinase inhibitory activity with a Ki value of 4 μm, comparable to the reference standard inhibitor kojic acid. A kinetic study suggested that these synthetic heterocyclic compounds behave as competitive inhibitors for the L-DOPA binding site of the enzyme. Furthermore, molecular modeling provided important insight into the mechanism of binding interactions with the tyrosinase copper active site.
Collapse
Affiliation(s)
- Edikarlos M Brasil
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, Brazil.,School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland, Australia
| | - Luciana M Canavieira
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, Brazil
| | - Érica T C Cardoso
- Laboratório de Neuroquímica Molecular e Celular, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil
| | - Edilene O Silva
- Laboratório de Biologia Estrutural, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil
| | - Jerônimo Lameira
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, Brazil.,Programa de Pós-Graduação em Química Medicinal, Universidade Federal do Pará, Belém, PA, Brazil
| | - José L M Nascimento
- Laboratório de Neuroquímica Molecular e Celular, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil.,Programa de Pós-Graduação em Química Medicinal, Universidade Federal do Pará, Belém, PA, Brazil
| | - Vera L Eifler-Lima
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil
| | - Barbarella M Macchi
- Laboratório de Neuroquímica Molecular e Celular, Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, PA, Brazil.,Programa de Pós-Graduação em Química Medicinal, Universidade Federal do Pará, Belém, PA, Brazil
| | - Dharmarajan Sriram
- Medicinal Chemistry and Antimycobacterial Research Laboratory, Department of Pharmacy, Birla Institute of Technology and Science, Hyderabad, India
| | - Paul V Bernhardt
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland, Australia
| | - José Rogério Araújo Silva
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, Brazil
| | - Craig M Williams
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, Queensland, Australia
| | - Cláudio N Alves
- Laboratório de Planejamento e Desenvolvimento de Fármacos, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, PA, Brazil.,Programa de Pós-Graduação em Química Medicinal, Universidade Federal do Pará, Belém, PA, Brazil
| |
Collapse
|
40
|
Zhang L, Zhao X, Tao GJ, Chen J, Zheng ZP. Investigating the inhibitory activity and mechanism differences between norartocarpetin and luteolin for tyrosinase: A combinatory kinetic study and computational simulation analysis. Food Chem 2017; 223:40-48. [DOI: 10.1016/j.foodchem.2016.12.017] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 11/14/2016] [Accepted: 12/08/2016] [Indexed: 01/11/2023]
|
41
|
Li H, Tan J, Song X, Wu F, Tang M, Hua Q, Zheng H, Hu F. Sublethal doses of neonicotinoid imidacloprid can interact with honey bee chemosensory protein 1 (CSP1) and inhibit its function. Biochem Biophys Res Commun 2017; 486:391-397. [DOI: 10.1016/j.bbrc.2017.03.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 03/13/2017] [Indexed: 01/11/2023]
|
42
|
Liu Y, Zhang G, Zeng N, Hu S. Interaction between 8-methoxypsoralen and trypsin: Monitoring by spectroscopic, chemometrics and molecular docking approaches. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 173:188-195. [PMID: 27653277 DOI: 10.1016/j.saa.2016.09.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 08/28/2016] [Accepted: 09/14/2016] [Indexed: 06/06/2023]
Abstract
8-Methoxypsoralen (8-MOP) is a naturally occurring furanocoumarin with various biological activities. However, there is little information on the binding mechanism of 8-MOP with trypsin. Here, the interaction between 8-MOP and trypsin in vitro was determined by multi-spectroscopic methods combined with the multivariate curve resolution-alternating least squares (MCR-ALS) chemometrics approach. An expanded UV-vis spectral data matrix was analysed by MCR-ALS, the concentration profiles and pure spectra for the three reaction species (trypsin, 8-MOP and 8-MOP-trypsin) were obtained to monitor the interaction between 8-MOP and trypsin. The fluorescence data suggested that a static type of quenching mechanism occurred in the binding of 8-MOP to trypsin. Hydrophobic interaction dominated the formation of the 8-MOP-trypsin complex on account of the positive enthalpy and entropy changes, and trypsin had one high affinity binding site for 8-MOP with a binding constant of 3.81×104Lmol-1 at 298K. Analysis of three dimensional fluorescence, UV-vis absorption and circular dichroism spectra indicated that the addition of 8-MOP induced the rearrangement of the polypeptides carbonyl hydrogen-bonding network and the conformational changes in trypsin. The molecular docking predicted that 8-MOP interacted with the catalytic residues His57, Asp102 and Ser195 in trypsin. The binding patterns and trypsin conformational changes may result in the inhibition of trypsin activity. This study has provided insights into the binding mechanism of 8-MOP with trypsin.
Collapse
Affiliation(s)
- Yingying Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Ni Zeng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Song Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| |
Collapse
|
43
|
Wang LH, Wang MS, Zeng XA, Gong DM, Huang YB. An in vitro investigation of the inhibitory mechanism of β-galactosidase by cinnamaldehyde alone and in combination with carvacrol and thymol. Biochim Biophys Acta Gen Subj 2017; 1861:3189-3198. [DOI: 10.1016/j.bbagen.2016.08.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/11/2016] [Accepted: 08/10/2016] [Indexed: 10/21/2022]
|
44
|
Modifying effects of carboxyl group on the interaction of recombinant S100A8/A9 complex with tyrosinase. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2016; 1865:370-379. [PMID: 28017864 DOI: 10.1016/j.bbapap.2016.12.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Revised: 12/19/2016] [Accepted: 12/20/2016] [Indexed: 12/16/2022]
Abstract
Tyrosinase is a determinant enzyme for modulating melanin production as its abnormal activity can result in an increased amount of melanin. Reduction of tyrosinase activity has been targeted for preventing and healing hyperpigmentation of skin, such as melanoma and age related spots. The aim of this systematic study is to investigate whether recombinant S100A8/A9 and its modified form reduce the activity of mushroom tyrosinase (MT) through changing its structure. Recombinant His-Tagged S100A8 and S100A9 are expressed in Escherichia coli BL21 (DE3) and modified using Woodward's reagent K which is a carboxyl group modifier. The structures of S100A8/A9 and its modified form are studied using fluorescence and circular dichroism spectroscopy, and the activity of MT is measured using UV-visible spectrophotometry in the presence of its substrate, L-3,4-dihydroxyphenylalanine (L-DOPA). The results show a lower stability of the modified protein when compared with its unmodified form. The interaction of S100A8/A9 with MT changes the structure and successfully reduces the activity of mushroom tyrosinase. Recombinant S100A8/A9 complex decreases MT activity which can control malignant melanoma, the most dangerous type of skin cancer.
Collapse
|
45
|
Zhou L, Liu W, Xiong Z, Zou L, Liu J, Zhong J, Chen J. Effect of ultrasound combined with malic acid on the activity and conformation of mushroom (Agaricus bisporus) polyphenoloxidase. Enzyme Microb Technol 2016; 90:61-8. [DOI: 10.1016/j.enzmictec.2016.05.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 04/27/2016] [Accepted: 05/01/2016] [Indexed: 12/24/2022]
|
46
|
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]
|
47
|
|
48
|
Jung SW, Lee K, Cho AE. Computational approaches to predict binding interactions between mammalian tyrosinases and (S)-(+)-decursin and its analogues as potent inhibitors. RSC Adv 2016. [DOI: 10.1039/c6ra09365e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Using computational methods, we elucidated the binding modes of (S)-(+)-decursin with mouse and human tyrosinases, and thereby provided insight to new tyrosinase inhibitors.
Collapse
Affiliation(s)
- Sang Won Jung
- Department of Bioinformatics
- Korea University
- Sejong 339-700
- Korea
| | - Kyeong Lee
- College of Pharmacy
- Dongguk University
- Koyang
- Korea
| | - Art E. Cho
- Department of Bioinformatics
- Korea University
- Sejong 339-700
- Korea
| |
Collapse
|
49
|
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]
|
50
|
Lin S, Zhang G, Liao Y, Gong D. The inhibitory kinetics and mechanism of dietary vitamins D3and B2on xanthine oxidase. Food Funct 2016; 7:2849-61. [DOI: 10.1039/c6fo00491a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dietary guidelines to promote health are usually based on the patterns’ prediction on disease risk of foods and nutrients.
Collapse
Affiliation(s)
- Suyun Lin
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Yijing Liao
- State Key Laboratory of Food Science and Technology
- Nanchang University
- Nanchang 330047
- China
| | - Deming Gong
- School of Biological Sciences
- The University of Auckland
- Auckland 1142
- New Zealand
| |
Collapse
|