1
|
Wang Y, Li C, Li Z, Moalin M, den Hartog GJM, Zhang M. Computational Chemistry Strategies to Investigate the Antioxidant Activity of Flavonoids-An Overview. Molecules 2024; 29:2627. [PMID: 38893503 PMCID: PMC11173571 DOI: 10.3390/molecules29112627] [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: 04/28/2024] [Revised: 05/27/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
Despite several decades of research, the beneficial effect of flavonoids on health is still enigmatic. Here, we focus on the antioxidant effect of flavonoids, which is elementary to their biological activity. A relatively new strategy for obtaining a more accurate understanding of this effect is to leverage computational chemistry. This review systematically presents various computational chemistry indicators employed over the past five years to investigate the antioxidant activity of flavonoids. We categorize these strategies into five aspects: electronic structure analysis, thermodynamic analysis, kinetic analysis, interaction analysis, and bioavailability analysis. The principles, characteristics, and limitations of these methods are discussed, along with current trends.
Collapse
Affiliation(s)
- Yue Wang
- Department of Pharmacology and Personalized Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands; (Y.W.); (C.L.); (G.J.M.d.H.)
| | - Chujie Li
- Department of Pharmacology and Personalized Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands; (Y.W.); (C.L.); (G.J.M.d.H.)
| | - Zhengwen Li
- School of Pharmacy, Chengdu University, 2025 Chengluo Avenue, Chengdu 610106, China;
| | - Mohamed Moalin
- Research Centre Material Sciences, Zuyd University of Applied Science, 6400 AN Heerlen, The Netherlands;
| | - Gertjan J. M. den Hartog
- Department of Pharmacology and Personalized Medicine, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6200 MD Maastricht, The Netherlands; (Y.W.); (C.L.); (G.J.M.d.H.)
| | - Ming Zhang
- Hainan University-HSF/LWL Collaborative Innovation Laboratory, College of Food Sciences & Engineering, Hainan University, 58 People Road, Haikou 570228, China
| |
Collapse
|
2
|
Lv X, Zhu L, Ma D, Zhang F, Cai Z, Bai H, Hui J, Li S, Xu X, Li M. Integrated Metabolomics and Transcriptomics Analyses Highlight the Flavonoid Compounds Response to Alkaline Salt Stress in Glycyrrhiza uralensis Leaves. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:5477-5490. [PMID: 38416716 DOI: 10.1021/acs.jafc.3c07139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/01/2024]
Abstract
Glycyrrhiza uralensis is a saline-alkali-tolerant plant whose aerial parts are rich in flavonoids; however, the role of these flavonoids in saline-alkali tolerance remains unclear. Herein, we performed physiological, metabolomics, and transcriptomics analyses in G. uralensis leaves under alkaline salt stress for different durations. Alkaline salt stress stimulated excessive accumulation of reactive oxygen species and consequently destroyed the cell membrane, causing cell death, and G. uralensis initiated osmotic regulation and the antioxidant system to respond to stress. In total, 803 metabolites, including 244 flavonoids, were detected via metabolomics analysis. Differentially altered metabolites and differentially expressed genes were coenriched in flavonoid-related pathways. Genes such as novel.4890, Glyur001511s00039602, and Glyur000775s00025737 were highly expressed, and flavonoid metabolites such as 2'-hydroxygenistein, apigenin, and 3-O-methylquercetin were upregulated. Thus, flavonoids as nonenzymatic antioxidants play an important role in stress tolerance. These findings provide novel insights into the response of G. uralensis to alkaline salt stress.
Collapse
Affiliation(s)
- Xuelian Lv
- College of Forestry and Prataculture, Ningxia University, Yinchuan 750021, China
- Agricultural Biotechnology Research Center, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China
| | - Lin Zhu
- College of Ecology and Environment, Ningxia University, Yinchuan 750021, China
| | - Dongmei Ma
- College of Ecology and Environment, Ningxia University, Yinchuan 750021, China
| | - Fengju Zhang
- College of Ecology and Environment, Ningxia University, Yinchuan 750021, China
| | - Zhengyun Cai
- Department of Life and Food Science, Ningxia University, Yinchuan 750021, China
| | - Haibo Bai
- Agricultural Biotechnology Research Center, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China
| | - Jian Hui
- Agricultural Biotechnology Research Center, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China
| | - Shuhua Li
- Agricultural Biotechnology Research Center, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China
| | - Xing Xu
- College of Forestry and Prataculture, Ningxia University, Yinchuan 750021, China
| | - Ming Li
- Institute of Forestry and Grassland Ecology, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China
| |
Collapse
|
3
|
Jagatap V, Ahmad I, Sriram D, Kumari J, Adu DK, Ike BW, Ghai M, Ansari SA, Ansari IA, Wetchoua PO, Karpoormath R, Patel H. Isoflavonoid and Furanochromone Natural Products as Potential DNA Gyrase Inhibitors: Computational, Spectral, and Antimycobacterial Studies. ACS OMEGA 2023; 8:16228-16240. [PMID: 37179626 PMCID: PMC10173323 DOI: 10.1021/acsomega.3c00684] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023]
Abstract
In pursuit of new antitubercular agents, we here report the antimycobacterial (H37Rv) and DNA gyrase inhibitory potential of daidzein and khellin natural products (NPs). We procured a total of 16 NPs based on their pharmacophoric similarities with known antimycobacterial compounds. The H37Rv strain of M. tuberculosis was found to be susceptible to only two out of the 16 NPs procured; specifically, daidzein and khellin each exhibited an MIC of 25 μg/mL. Moreover, daidzein and khellin inhibited the DNA gyrase enzyme with IC50 values of 0.042 and 0.822 μg/mL, respectively, compared to ciprofloxacin with an IC50 value of 0.018 μg/mL. Daidzein and khellin were found to have lower toxicity toward the vero cell line, with IC50 values of 160.81 and 300.23 μg/mL, respectively. Further, molecular docking study and MD simulation of daidzein indicated that it remained stable inside the cavity of DNA GyrB domain for 100 ns.
Collapse
Affiliation(s)
- Vilas
R. Jagatap
- Division
of Computer-Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education
and Research, Shirpur District, Dhule 425405, Maharashtra, India
| | - Iqrar Ahmad
- Division
of Computer-Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education
and Research, Shirpur District, Dhule 425405, Maharashtra, India
| | - Dharmarajan Sriram
- Department
of Pharmacy, Birla Institute of Technology
and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet Mandal, R. R. District, Hyderabad 500078, India
| | - Jyothi Kumari
- Department
of Pharmacy, Birla Institute of Technology
and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet Mandal, R. R. District, Hyderabad 500078, India
| | - Darko Kwabena Adu
- Department
of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences,
College of Health Sciences, University of
KwaZulu-Natal (Westville), Durban 4000, South Africa
| | - Blessing Wisdom Ike
- Department
of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences,
College of Health Sciences, University of
KwaZulu-Natal (Westville), Durban 4000, South Africa
| | - Meenu Ghai
- Discipline
of Genetics, School of Life Sciences, University
of KwaZulu-Natal, Westville, Durban 4000, South Africa
| | - Siddique Akber Ansari
- Department
of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Irfan Aamer Ansari
- Department
of Drug Science and Technology, University
of Turin, Turin 10124, Italy
| | - Priscille Ornella
Mefotso Wetchoua
- Department
of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences,
College of Health Sciences, University of
KwaZulu-Natal (Westville), Durban 4000, South Africa
| | - Rajshekhar Karpoormath
- Department
of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences,
College of Health Sciences, University of
KwaZulu-Natal (Westville), Durban 4000, South Africa
| | - Harun Patel
- Division
of Computer-Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education
and Research, Shirpur District, Dhule 425405, Maharashtra, India
| |
Collapse
|
4
|
Thuy PT, Hieu TT, Duc DX, Van Trung H, Hung NH, Setzer WN, Thang TD, Son NT. Antioxidative Limonoids from Swietenia macrophylla Fruits: Experimental, DFT (Density Functional Theory) Approach, and Docking Study. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
|
5
|
Erdoğan Ş, Özbakır Işın D. A DFT study on OH radical scavenging activities of eriodictyol, Isosakuranetin and pinocembrin. J Biomol Struct Dyn 2022; 40:10802-10811. [PMID: 34286668 DOI: 10.1080/07391102.2021.1950572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Flavonoids are natural compounds with antioxidant properties that have positive effects on human health, which reduce toxic effects of reactive oxygen species (ROS) and partially oxidative damage. In the work, the density functional theory (DFT/BMK) calculations were performed for antioxidant activity evaluation of pinocembrin (P), isosakuranetin (I) and eriodictyol (E). Four main mechanisms were examined: hydrogen atom transfer (HAT), radical adduct formation (RAF), single electron transfer-proton transfer (SET-PT) and Sequential proton loss electron transfer (SPLET). HAT and SPLET are thermodynamically the most probable process in gas phase and water. The three flavonoids examined + •OH HAT and RAF mechanisms for each possible location were investigated theoretically for the first time. The results were discussed by considering thermodynamic, kinetic and structural data of various reaction paths using IRC approach.Communicated by Ramaswamy H. Sarma.
Collapse
Affiliation(s)
- Şaban Erdoğan
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Yalova University, Yalova, Turkey
| | - Dilara Özbakır Işın
- Department of Chemistry, Faculty of Science, Sivas Cumhuriyet University, Sivas, Turkey
| |
Collapse
|
6
|
Thuy PT, Son NT. Thermodynamic and kinetic studies on antioxidant capacity of amentoflavone: a DFT (density functional theory) computational approach. Free Radic Res 2022; 56:526-535. [PMID: 36370431 DOI: 10.1080/10715762.2022.2146584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Density functional theory (DFT) at the theoretical M06-2X/6-311G(d,p) level was used to assess thermodynamics and kinetics in the antioxidative action of amentoflavone (AF). The antioxidative HAT pathway (H-atom transfer) is assigned to this compound in gas, but the SPL-ET (sequential proton loss-electron transfer) is the main route in polar solvents methanol and water. In all four mediums gas, benzene, methanol, and water, 4‴-OH is the most active site in free radical quenching with the lowest BDE (bond dissociation enthalpy) values of 81.8-84.8 kcal/mol, as well as it exerted the PA (proton affinity) values of 29.8-33.0 kcal/mol in methanol and water. Regarding kinetics, when interacted with •OOH and •NO2 in gas and methanol, 4‴-OH group is also responsible for the lowest ΔG# values (Gibbs free energy of activation), and the highest rate constant K values. Acidic assessment also indicated that 4‴-OH is associated with the strongest acidity (the lowest pKa). Two favorable oriented 4‴-OH and 7-OH groups further exhibited antioxidative activity since they prevented metal ions Zn2+ and Fe2+ from participating in free radical producing processes, in which the most stable complex [FeAF(H2O)4] generated the lowest IE value of -206.2 kcal/mol, and Egap value of 3.491 kcal/mol, but the highest MIA values of 184.6 kcal/mol in methanol.
Collapse
Affiliation(s)
- Phan Thi Thuy
- Department of Chemistry, College of Education, Vinh University, Vinh, Vietnam
| | - Ninh The Son
- Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), Caugiay, Vietnam
| |
Collapse
|
7
|
Spiegel M. Current Trends in Computational Quantum Chemistry Studies on Antioxidant Radical Scavenging Activity. J Chem Inf Model 2022; 62:2639-2658. [PMID: 35436117 PMCID: PMC9198981 DOI: 10.1021/acs.jcim.2c00104] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
![]()
The antioxidative
nature of chemicals is now routinely studied
using computational quantum chemistry. Scientists are constantly proposing
new approaches to investigate those methods, and the subject is evolving
at a rapid pace. The goal of this review is to collect, consolidate,
and present current trends in a clear, methodical, and reference-rich
manner. This paper is divided into several sections, each of which
corresponds to a different stage of elaborations: preliminary concerns,
electronic structure analysis, and general reactivity (thermochemistry
and kinetics). The sections are further subdivided based on methodologies
used. Concluding remarks and future perspectives are presented based
on the remaining elements.
Collapse
Affiliation(s)
- Maciej Spiegel
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, Borowska 211A, 50-556 Wroclaw, Poland
| |
Collapse
|
8
|
The antioxidative potential of benzofuran-stilbene hybrid derivatives: a comparison between natural and synthetic compounds. Struct Chem 2021. [DOI: 10.1007/s11224-021-01802-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
9
|
Thuy PT, Son NT. Thermodynamic study on antioxidative action of cynandione A: a DFT approach. Struct Chem 2021. [DOI: 10.1007/s11224-021-01756-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
10
|
Chen Q, Wang X, Yuan X, Shi J, Zhang C, Yan N, Jing C. Comparison of Phenolic and Flavonoid Compound Profiles and Antioxidant and α-Glucosidase Inhibition Properties of Cultivated Soybean ( Glycine max) and Wild Soybean ( Glycine soja). PLANTS 2021; 10:plants10040813. [PMID: 33924154 PMCID: PMC8074397 DOI: 10.3390/plants10040813] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/15/2021] [Accepted: 04/15/2021] [Indexed: 11/16/2022]
Abstract
Wild soybean (Glycine soja Sieb.et Zucc; WS) has been used as a traditional food in China for many years and contains significantly higher levels of isoflavones than cultivated soybean (Glycine max; CS), but the secondary metabolites, including flavonoids and the phenolic composition differences between them, remain unclear. The results showed that WS possessed significantly higher total phenolic and flavonoid content and exhibited better antioxidant and α-glucosidase inhibition activities as well as excellent protective effects against H2O2-induced oxidative injury in a human endothelial cell line. Through metabolomic analysis, 642 metabolites were identified, and 238 showed differential expression, with 151 upregulated and 87 downregulated. A total of 79 flavonoid compounds were identified, 42 of which were upregulated in WS. 2'-Hydroxygenistein, garbanzol, protocatechuic aldehyde, ligustilide, and resveratrol were the most discriminated compounds in WS. The metabolic pathway analysis of differential metabolites related to the biosynthesis of flavonoids and phenolic acids were the biosynthesis of phenylpropanoids, flavonoids, isoflavonoids, flavones, and flavonols. This study substantially elucidated differences in the content of flavonoids and biological activities between WS and CS, which is useful information for the effective utilization of these two black soybean species in food processing.
Collapse
Affiliation(s)
- Qianru Chen
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (Q.C.); (X.Y.); (C.Z.)
| | - Xianxian Wang
- College of Plant Health and Medicine Scientific Research Center, Qingdao Agricultural University, Qingdao 266101, China;
| | - Xiaolong Yuan
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (Q.C.); (X.Y.); (C.Z.)
| | - John Shi
- Guelph Food Research Centre, Agriculture and Agri-Food Canada, Guelph, ON N1G 5C9, Canada;
| | - Chengsheng Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (Q.C.); (X.Y.); (C.Z.)
| | - Ning Yan
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (Q.C.); (X.Y.); (C.Z.)
- Correspondence: (N.Y.); (C.J.); Tel.: +0532-88702115 (N.Y. & C.J.)
| | - Changliang Jing
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; (Q.C.); (X.Y.); (C.Z.)
- Correspondence: (N.Y.); (C.J.); Tel.: +0532-88702115 (N.Y. & C.J.)
| |
Collapse
|
11
|
de Souza
Farias SA, da Costa KS, Martins JB. Analysis of Conformational, Structural, Magnetic, and Electronic Properties Related to Antioxidant Activity: Revisiting Flavan, Anthocyanidin, Flavanone, Flavonol, Isoflavone, Flavone, and Flavan-3-ol. ACS OMEGA 2021; 6:8908-8918. [PMID: 33842761 PMCID: PMC8028018 DOI: 10.1021/acsomega.0c06156] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/01/2021] [Indexed: 06/03/2023]
Abstract
Understanding the antioxidant activity of flavonoids is important to investigate their biological activities as well as to design novel molecules with low toxicity and high activity. Aromaticity is a chemical property found in cyclic structures that plays an important role in their stability and reactivity, and its investigation can help us to understand the antioxidant activity of some heterocyclic compounds. In the present study, we applied the density functional theory (DFT) to investigate the properties of seven flavonoid structures with well-reported antioxidant activity: flavan, anthocyanidin, flavanone, flavonol, isoflavone, flavone, and flavan-3-ol. Conformational, structural, magnetic, and electronic analyses were performed using nuclear magnetic resonance, ionization potentials, electron affinity, bond dissociation energy, proton affinity, frontier molecular orbitals (highest occupied molecular orbital (HOMO)/lowest unoccupied molecular orbital (LUMO)), and aromaticity through nucleus-independent chemical shifts to analyze these seven flavonoid structures. We revised the influence of hydroxyl groups on the properties of flavonoids and also investigated the influence of the aromaticity of these seven flavonoids on the antioxidant activity.
Collapse
Affiliation(s)
- Sergio Antônio de Souza
Farias
- Laboratory
of Molecular Modeling, Institute of Educational Sciences, Federal University of Western Pará, 68040-255 Santarém, Pará, Brazil
| | - Kauê Santana da Costa
- Institute
of Biodiversity, Federal University of Western
Pará, 68040-255 Santarém, Pará, Brazil
| | - João B.
L. Martins
- Laboratory
of Computational Chemistry, Institute of Chemistry, University of Brasilia, 4478 Brasília, Distrito
Federal, Brazil
| |
Collapse
|
12
|
Optimization of Enzyme-Assisted Extraction and Purification of Flavonoids from Pinus koraiensis Nut-Coated Film and Antioxidant Activity Evaluation. Molecules 2021; 26:molecules26071950. [PMID: 33808428 PMCID: PMC8038113 DOI: 10.3390/molecules26071950] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/20/2021] [Accepted: 03/25/2021] [Indexed: 11/16/2022] Open
Abstract
Pinus koraiensis nut-coated film is a kind of by-product of nut processing, which has been shown to contain flavonoids, polyphenols, and other substances that can be used to produce natural antioxidant extracts. In this study, response surface methodology (RSM) was used to optimize the extraction process of flavonoids of P. koraiensis nut-coated film (PNF), and macroporous resin HPD600 was used to purify PNF (P-PNF). Its antioxidant activity was examined by DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging capacity, oxygen free radical absorption capacity (ORAC), total oxygen radical capture (TRAP), and iron ion reduction capacity. Under the ideal extraction conditions comprising a cellulase dosage of 90 U/g, a material/liquid ratio of 1:20 (g/mL), and an extraction time of 2 h, the PNF yield was 3.37%. Purification conditions were sample concentration of 2.0 mg/mL, pH of 5, water washing volume of 3 bed volume (BV), eluent ethanol concentration of 50%, and volume of 2 BV. The P-PNF recovery was 84.32%, and purity increased from 33.80% to 61.70%. Additionally, P-PNF showed increased antioxidant activity compared to PNF. Cumulatively, this study obtained the optimal values for the process parameters in order to achieve the maximum rates of extraction of PNF for economically optimal production at an industrial scale.
Collapse
|
13
|
Antioxidative and α-glucosidase inhibitory constituents of Polyscias guilfoylei: experimental and computational assessments. Mol Divers 2021; 26:229-243. [PMID: 33765238 DOI: 10.1007/s11030-021-10206-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 02/26/2021] [Indexed: 02/06/2023]
Abstract
Searching for bioactive agents from medicinal plants, eleven constituents were isolated from Polyscias guilfoylei stem for the first time, including a nucleoside uracil (1), two sterols β-sitosterol (2) and daucosterol (3), a saponin androseptoside A (4), two lignans (+)-pinoresinol (5) and (+)-syringaresinol (6), four phenolic acids protocatechuic acid (7), methyl protocatechuate (8), caffeic acid (9), and 5-O-caffeoylquinic acid (10), and a flavonoid quercitrin (11). Metabolites 1, 4, and 6-11 have never been observed in genus Polyscias before. Phenolic compounds 7 and 9 possessed the respective IC50 values of 21.33 and 13.88 µg/mL in DPPH (2,2-diphenyl-1-picrylhydrazyl) antioxidative assay, as compared with that of the positive control resveratrol (IC50 = 13.21 µg/mL). From density functional theory (DFT) calculated approach, the DPPH free radical scavenging capacity of two compounds 7 and 9 can be explained by the role of OH groups at carbons C-3 and C-4. Antioxidative actions of these two potential agents are followed HAT (H atom transfer) mechanism by OH bond disruption in gas, but SPLET (sequential proton loss electron transfer) mechanism in solvents water and methanol. Compared to 4-OH group, 3-OH group showed better bond disruption enthalpies and better kinetic energies since it reacted with HOO• and DPPH radicals. Sterols 2-3 and flavonoid 11 induced the IC50 values of < 2.0 µg/mL better than the positive control acarbose (IC50 = 184.0 µg/mL) in α-glucosidase inhibitory assay. Their interactions with human intestinal C- and N-terminal domains of α-glucosidase were explored using molecular docking study. The obtained results proved that compounds 2, 3, and 11 bind relatively stronger with the C-terminal domain than to the N-terminal domain through pivotal residues in the binding site and could be hypothesized as mixed inhibitors.
Collapse
|
14
|
Thuy PT, Son NT. The conversion of L-lysine into L-β-lysine: the role of 5'-deoxyadenosyl radical and water-a DFT study. J Mol Model 2021; 27:6. [PMID: 33389163 DOI: 10.1007/s00894-020-04639-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 12/09/2020] [Indexed: 10/22/2022]
Abstract
In the current study, we deal with the crucial role of 5'-deoxyadenosyl radical and water in the mechanism of the conversion of L-lysine into L-β-lysine. The DFT (density functional theory)-B3LYP method coupled with 6-31G(d) basis set has been performed to investigate the optimized structures of transition states (TSs) and intermediates (IMs) of two processes in water: (i) the attack of 5'-deoxyadenosyl radical to complex PLP-L-lysine and (ii) hydrolysis to liberate L-β-lysine. Meanwhile, M062X/6-311++g(3df,2p) level of theory is applied to compute the relative Gibbs energy ΔG. Procedure (i) has undergone various steps but includes two main structural aziridinyl rings TS2 (ΔG = 4.1 kcal/mol) and TS3 (ΔG = 2.3 kcal/mol). In stage (ii), hydroxy group of water would help to break the bond between β-NH2 group of L-lysine and PLP better than that of Tyr389.
Collapse
Affiliation(s)
- Phan Thi Thuy
- School of Natural Sciences Education, Vinh University, Vinh, Vietnam
| | - Ninh The Son
- Institute of Chemistry, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam.
| |
Collapse
|
15
|
Van Trang N, Thuy PT, Mai Thanh DT, Son NT. Benzofuran–stilbene hybrid compounds: an antioxidant assessment – a DFT study. RSC Adv 2021. [DOI: 10.1039/d1ra01076j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The kinetic reaction of the benzofuran–stilbene hybrid compound 5-(2-(2-(4-hydroxyphenyl)benzofuran-5-yl)vinyl)benzene-1,3-diol captures the HOO˙ free radical.
Collapse
Affiliation(s)
| | - Phan Thi Thuy
- School of Natural Sciences Education
- Vinh University
- Vietnam
| | - Dinh Thi Mai Thanh
- University of Science and Technology of Hanoi
- Vietnam Academy of Science and Technology (VAST)
- Hanoi
- Vietnam
| | - Ninh The Son
- Institute of Chemistry
- Vietnam Academy of Science and Technology (VAST)
- Hanoi
- Vietnam
| |
Collapse
|
16
|
Son NT, Thuy PT, Van Trang N. Antioxidative capacities of stilbenoid Suaveolensone A and Flavonoid Suaveolensone B: A detailed analysis of structural-electronic properties and mechanisms. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
17
|
Antioxidant of Trans-Resveratrol: A Comparison between OH and CH Groups Based on Thermodynamic Views. J CHEM-NY 2020. [DOI: 10.1155/2020/8869023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Trans-resveratrol establishes the planarity in its structure which makes it an interesting compound in both experimental and theoretical examinations. The current study, using the density functional method (DFT), attempts to compare the antioxidative capacities between hydroxyl (OH) and aromatic methine (CH) groups of this molecule. Becke’s exchange-correlation B3LYP functional together with 6-311++G(d, p) basis set was used to reveal the effects of structural geometry and electronic feature on the antioxidative results of OH and CH groups. The antioxidative action of trans-resveratrol has followed the HAT mechanism in gas, but the SPLET pathway in liquids. OH bond breaking is easier than CH bond disruption. 4-OH bond breaking induces the lowest BDE values of 74.4–77.9 kcal/mol in gas, acetone, methanol, and water, as well as the lowest PA values of 37.2–46.2 kcal/mol in acetone, methanol, and water. From the kinetic view, 4-OH is also an active center to capture laboratory radical DPPH, ROS radicals HOO• and CH3O•, and RNS radical •NO2.
Collapse
|
18
|
Yakan H, Bakır TK, Çavuş MS, Muğlu H. New β-isatin aldehyde-N,N′-thiocarbohydrazones: preparation, spectroscopic studies and DFT approach to antioxidant characteristics. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04270-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
19
|
PTP1B and α-glucosidase inhibitors from Selaginella rolandi-principis and their glucose uptake stimulation. J Nat Med 2020; 75:186-193. [PMID: 32926336 DOI: 10.1007/s11418-020-01448-z] [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: 07/26/2020] [Accepted: 09/02/2020] [Indexed: 10/23/2022]
Abstract
As part of an ongoing search for new protein tyrosine phosphatase 1B inhibitors and glucose uptake stimulators from nature, a new coumarin, selaginolide A (1) and four known isoflavones (2‒5) were isolated from the ethanol extract of a Vietnamese medicinal plant Selaginella rolandi-principis. The chemical structures of the isolates were elucidated by extensive analysis of spectroscopic and physicochemical data. Compounds 3‒5 have been identified from Selaginella genus for the first time. The antidiabetic properties of the isolates (1‒5) were investigated using in vitro assay on 2-NBDG uptake in 3T3-L1 adipocytes and against PTP1B and α-glucosidase enzyme activities as well. Compounds 1 exhibited the most potency with inhibitory IC50 values of 7.40 ± 0.28 and 7.52 ± 0.37 µM against PTP1B and α-glucosidase, respectively. Compounds 3 and 5 possessed potential inhibitions on PTP1B enzyme with IC50 values of 23.02 ± 1.29 and 11.08 ± 0.92 µM and moderate inhibitions on α-glucosidase with IC50 values of 36.47 ± 1.87 and 55.73 ± 2.58 µM, respectively. Compounds 2 and 4 showed weak PTP1B inhibitory activity (IC50 > 30 µM) but displayed remarkable α-glucosidase inhibition with IC50 values of 3.39 ± 0.87 and 9.72 ± 0.62 µM, respectively. Furthermore, ursolic acid as a positive control (IC50 3.42 ± 0.26 µM) and compounds 1 and 5 acted as mixed-competitive inhibitors against PTP1B enzyme with Ki values of 6.46, 10.28, and 15.01 µM, respectively. In addition, compounds 1 and 5 also showed potent stimulatory effects on 2-NBDG uptake at a concentration of 10 µM. The obtained result might suggest the potential of new coumarin (1) as a new type of natural PTP1B and α-glucosidase inhibitor for further research and development of antidiabetic and obese agents.Graphic abstract.
Collapse
|
20
|
Quinolone and isoquinolone alkaloids: the structural-electronic effects and the antioxidant mechanisms. Struct Chem 2020. [DOI: 10.1007/s11224-020-01602-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
21
|
Thuy PT, Van Trang N, Son NT. Antioxidation of 2-phenylbenzofuran derivatives: structural-electronic effects and mechanisms. RSC Adv 2020; 10:6315-6332. [PMID: 35496026 PMCID: PMC9049690 DOI: 10.1039/c9ra10835a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 02/06/2020] [Indexed: 01/20/2023] Open
Abstract
Stilbenoid-type 2-phenylbenzofuran derivatives, which are widely distributed in nature, are now promising antioxidant agents. In the present study, a quantum computational approach principally based on the DFT/B3LYP method with the 6-311++G(d,p) basis set was used to shed light on free radical scavenging for the isolated compounds stemofurans A-K and S-W. On the basis of the findings and from a thermodynamic perspective, the antioxidant activity of all studied compounds in the gaseous phase was mostly controlled by the O-H bond dissociation enthalpy (BDE), consistent with the hydrogen atom transfer (HAT) mechanism. The solvent effect was investigated, and the hydroxyl radicals of these studied compounds possessed the lowest proton affinity (PA) enthalpy and the sequential proton loss electron transfer (SPLET) pathway occurred in water, methanol and acetone. The studied compounds interacted with DPPH radicals, which is kinetic evidence of the involvement of two intermediates and one transition state. From both thermodynamics and kinetics perspectives, it can be proposed that stemofuran U is likely to be a leader compound in antioxidant drug development due to the presence of a 4'-OH moiety. Regarding the structure-bioactivity relationship, methylation can lead to a decrease in BDE.
Collapse
Affiliation(s)
- Phan Thi Thuy
- School of Natural Sciences Education, Vinh University Vietnam
| | - Nguyen Van Trang
- Institute for Tropical Technology, Vietnam Academy of Science and Technology (VAST) 18 Hoang Quoc Viet, Caugiay Hanoi Vietnam +84-985-538-722
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST) 18 Hoang Quoc Viet, Caugiay Hanoi Vietnam
| | - Ninh The Son
- Institute of Chemistry, Vietnam Academy of Science and Technology (VAST) 18 Hoang Quoc Viet, Caugiay Hanoi Vietnam +84-968-929-304
| |
Collapse
|
22
|
A new cerebroside from the entomopathogenic fungus Ophiocordyceps longiissima: Structural-electronic and antioxidant relations. Experimental and DFT calculated studies. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127061] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|