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Teng J, Xu Q, Zhang H, Yu R, Liu C, Song M, Cao X, Du X, Tao S, Yan H. Enzymatic mechanism of MlrB for catalyzing linearized microcystins by Sphingopyxis sp. USTB-05. Front Microbiol 2024; 15:1389235. [PMID: 38711965 PMCID: PMC11070527 DOI: 10.3389/fmicb.2024.1389235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/08/2024] [Indexed: 05/08/2024] Open
Abstract
Microcystins (MCs) are the most widespread cyanobacterial toxins in eutrophic water body. As high toxic intermediate metabolites, linearized MCs are further catalyzed by linearized microcystinase (MlrB) of Sphingopyxis sp. USTB-05. Here MlrB structure was studied by comprizing with a model representative of the penicillin-recognizing enzyme family via homology modeling. The key active sites of MlrB were predicted by molecular docking, and further verified by site-directed mutagenesis. A comprehensive enzymatic mechanism for linearized MCs biodegradation by MlrB was proposed: S77 transferred a proton to H307 to promote a nucleophilic attack on the peptide bond (Ala-Leu in MC-LR or Ala-Arg in MC-RR) of linearized MCs to form the amide intermediate. Then water was involved to break the peptide bond and produced the tetrapeptide as product. Meanwhile, four amino acid residues (K80, Y171, N173 and D245) acted synergistically to stabilize the substrate and intermediate transition states. This study firstly revealed the enzymatic mechanism of MlrB for biodegrading linearized MCs with both computer simulation and experimental verification.
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Affiliation(s)
- Junhui Teng
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Qianqian Xu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Haiyang Zhang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Ruipeng Yu
- Beijing Institute for Drug Control, Beijing, China
| | - Chao Liu
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Meijie Song
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Xiaoyu Cao
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Xinyue Du
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Suxuan Tao
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
| | - Hai Yan
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
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Wiciński M, Fajkiel-Madajczyk A, Kurant Z, Gajewska S, Kurant D, Kurant M, Sousak M. Can Asiatic Acid from Centella asiatica Be a Potential Remedy in Cancer Therapy?-A Review. Cancers (Basel) 2024; 16:1317. [PMID: 38610995 PMCID: PMC11011005 DOI: 10.3390/cancers16071317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/26/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Centella asiatica has been recognized for centuries in Eastern medicine for its pharmacological properties. Due to the increasing prevalence of oncological diseases worldwide, natural substances that could qualify as anticancer therapeutics are becoming increasingly important subjects of research. This review aims to find an innovative use for asiatic acid (AA) in the treatment or support of cancer therapy. It has been demonstrated that AA takes part in inhibiting phosphorylation, inducing cell death, and reducing tumor growth and metastasis by influencing important signaling pathways, such as PI3K, Akt, mTOR, p70S6K, and STAT3, in cancer cells. It is also worth mentioning the high importance of asiatic acid in reducing the expression of markers such as N-cadherin, β-catenin, claudin-1, and vimentin. Some studies have indicated the potential of asiatic acid to induce autophagy in cancer cells through changes in the levels of specific proteins such as LC3 and p62. It can also act as an anti-tumor immunotherapeutic agent, thanks to its inductive effect on Smad7 in combination with naringenin (an Smad3 inhibitor). It seems that asiatic acid may be a potential anticancer drug or form of adjunctive therapy. Further studies should take into account safety and toxicity issues, as well as limitations related to the pharmacokinetics of AA and its low oral bioavailability.
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Affiliation(s)
- Michał Wiciński
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie Skłodowskiej 9, 85-094 Bydgoszcz, Poland; (M.W.); (Z.K.); (D.K.)
| | - Anna Fajkiel-Madajczyk
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie Skłodowskiej 9, 85-094 Bydgoszcz, Poland; (M.W.); (Z.K.); (D.K.)
| | - Zuzanna Kurant
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie Skłodowskiej 9, 85-094 Bydgoszcz, Poland; (M.W.); (Z.K.); (D.K.)
| | - Sandra Gajewska
- Department of Medicinal Chemistry, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Dr. A. Jurasza 2, 85-089 Bydgoszcz, Poland;
| | - Dominik Kurant
- Department of Pharmacology and Therapeutics, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, M. Curie Skłodowskiej 9, 85-094 Bydgoszcz, Poland; (M.W.); (Z.K.); (D.K.)
| | - Marcin Kurant
- Department of Urology, District Hospital, 10 Lesna Street, 89-600 Chojnice, Poland;
| | - Masaoud Sousak
- Department of General Surgery, Paluckie Health Center Sp. o.o., Szpitalna 30, 88-400 Żnin, Poland;
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卢 国, 孙 红, 孙 正, 刘 乐, 王 磊, 张 宁, 王 宇, 何 一, 纪 佳, 李 馨, 康 品, 唐 碧. [Effect of asiaticoside on systolic blood pressure and relaxation of isolated thoracic aorta of rats]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2024; 44:523-532. [PMID: 38597444 PMCID: PMC11006695 DOI: 10.12122/j.issn.1673-4254.2024.03.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Indexed: 04/11/2024]
Abstract
OBJECTIVE To investigate the effect of asiaticoside on blood pressure and relaxation of thoracic aorta in rats and explore the underlying mechanism. METHODS SD rats treated with 50 and 100 mg/kg asiaticoside by daily gavage for 2 weeks were monitored for systolic blood pressure changes, and histological changes of the thoracic aorta were evaluated using HE staining. In isolated rat endothelium-intact and endothelium-denuded thoracic aorta rings, the effects of asiaticoside on relaxation of the aortic rings were tested at baseline and following norepinephrine (NE)- and KCl-induced constriction. The vascular relaxation effect of asiaticoside was further observed in NE-stimulated endothelium-intact rat aortic rings pretreated with L-nitroarginine methyl ester, indomethacin, zinc protoporphyrin Ⅸ, tetraethyl ammonium chloride, glibenclamide, barium chloride, Iberiotoxin, 4-aminopyridine, or TASK-1-IN-1. The aortic rings were treated with KCl and NE followed by increasing concentrations of CaCl2 to investigate the effect of asiaticoside on vasoconstriction induced by external calcium influx and internal calcium release. RESULTS Asiaticoside at 50 and 100 mg/kg significantly lowered systolic blood pressure in rats without affecting the thoracic aorta histomorphology. While not obviously affecting resting aortic rings with intact endothelium, asiaticoside at 100 mg/kg induced significant relaxation of the rings constricted by KCl and NE, but its effects differed between endothelium-intact and endothelium-denuded rings. In endothelium-intact aortic rings pretreated with indomethacin, ZnPP Ⅸ, barium chloride, glyburide, TASK-1-IN-1 and 4-aminopyridine, asiaticoside did not produce significant effect on NE-induced vasoconstriction, and tetraethylammonium, Iberiotoxin and L-nitroarginine methyl ester all inhibited the relaxation effect of asiaticoside. In KCland NE-treated rings, asiaticoside obviously inhibited CaCl2-induced vascular contraction. CONCLUSION Asiaticoside induces thoracic aorta relaxation by mediating high-conductance calcium-activated potassium channel opening, promoting nitric oxide release from endothelial cells and regulating Ca2+ influx and outflow, thereby reducing systolic blood pressure in rats.
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Affiliation(s)
- 国庆 卢
- 蚌埠医科大学第一附属医院心血管内科,安徽 蚌埠 233000Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管病研究中心生理学教研室,安徽 蚌埠 233000Department of Physiology, Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical University, Bengbu 233000, China
| | - 红燕 孙
- 蚌埠医科大学第一附属医院心血管内科,安徽 蚌埠 233000Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管病研究中心生理学教研室,安徽 蚌埠 233000Department of Physiology, Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical University, Bengbu 233000, China
| | - 正宇 孙
- 蚌埠医科大学第一附属医院心血管内科,安徽 蚌埠 233000Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管病研究中心生理学教研室,安徽 蚌埠 233000Department of Physiology, Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical University, Bengbu 233000, China
| | - 乐强 刘
- 蚌埠医科大学临床医学院,安徽 蚌埠 233000College of Clinical Medicine, Bengbu Medical University, Bengbu 233000, China
| | - 磊 王
- 蚌埠医科大学第一附属医院心血管内科,安徽 蚌埠 233000Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管病研究中心生理学教研室,安徽 蚌埠 233000Department of Physiology, Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical University, Bengbu 233000, China
| | - 宁宁 张
- 蚌埠医科大学第一附属医院心血管内科,安徽 蚌埠 233000Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管病研究中心生理学教研室,安徽 蚌埠 233000Department of Physiology, Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical University, Bengbu 233000, China
| | - 宇航 王
- 蚌埠医科大学临床医学院,安徽 蚌埠 233000College of Clinical Medicine, Bengbu Medical University, Bengbu 233000, China
| | - 一鸣 何
- 蚌埠医科大学临床医学院,安徽 蚌埠 233000College of Clinical Medicine, Bengbu Medical University, Bengbu 233000, China
| | - 佳慧 纪
- 蚌埠医科大学临床医学院,安徽 蚌埠 233000College of Clinical Medicine, Bengbu Medical University, Bengbu 233000, China
| | - 馨月 李
- 蚌埠医科大学临床医学院,安徽 蚌埠 233000College of Clinical Medicine, Bengbu Medical University, Bengbu 233000, China
| | - 品方 康
- 蚌埠医科大学第一附属医院心血管内科,安徽 蚌埠 233000Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管病研究中心生理学教研室,安徽 蚌埠 233000Department of Physiology, Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical University, Bengbu 233000, China
| | - 碧 唐
- 蚌埠医科大学第一附属医院心血管内科,安徽 蚌埠 233000Department of Cardiovascular Medicine, First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
- 蚌埠医科大学心脑血管病研究中心生理学教研室,安徽 蚌埠 233000Department of Physiology, Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical University, Bengbu 233000, China
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Rasul HO, Aziz BK, Ghafour DD, Kivrak A. Screening the possible anti-cancer constituents of Hibiscus rosa-sinensis flower to address mammalian target of rapamycin: an in silico molecular docking, HYDE scoring, dynamic studies, and pharmacokinetic prediction. Mol Divers 2023; 27:2273-2296. [PMID: 36318405 DOI: 10.1007/s11030-022-10556-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022]
Abstract
One of the most common malignancies diagnosed and the leading cause of death for cancer-stricken women globally is breast cancer. The molecular subtype affects therapy options because it is a complex disorder with multiple subtypes. By concentrating on receptor activation, mTOR (mammalian target of rapamycin) can be employed as a therapeutic target. The goal of this work was to screen a number of inhibitors produced from Hibiscus rosa-sinensis for possible target to inhibit the mTOR and to determine which has the greatest affinity for the receptor. Primarily, the ionization states of the chosen compounds were predicted using the ChemAxon web platform, and their pKa values were estimated. Given the significance of interactions between proteins in the development of drugs, structure-based virtual screening was done using AutoDock Vina. Approximately 120 Hibiscus components and ten approved anti-cancer drugs, including the mTOR inhibitor everolimus, were used in the comparative analysis. By using Lipinski's rule of five to the chosen compounds, the ADMET profile and drug-likeness characteristics were further examined to assess the anti-breast cancer activity. The compounds with the highest ranked binding poses were loaded using the SeeSAR tool and the HYDE scoring to give interactive, desolvation, and visual ΔG estimation for ligand binding affinity assessment. Following, the prospective candidates underwent three replicas of 100 ns long molecular dynamics simulations, preceded with MM-GBSA binding free energy calculation. The stability of the protein-ligand complex was determined using root mean square deviation (RMSD), root mean square fluctuation (RMSF), and protein-ligand interactions. The results demonstrated that the best mTOR binding affinities were found for stigmastadienol (107), lupeol (66), and taraxasterol acetate (111), which all performed well in comparison to the control compounds. Thus, bioactive compounds isolated from Hibiscus rosa-sinensis could serve as lead molecules for the creation of potent and effective mTOR inhibitors for the breast cancer therapy.
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Affiliation(s)
- Hezha O Rasul
- Department of Pharmaceutical Chemistry, College of Medicals and Applied Sciences, Charmo University, Peshawa Street, Chamchamal, 46023, Sulaimani, Iraq.
| | - Bakhtyar K Aziz
- Department of Nanoscience and Applied Chemistry, College of Medicals and Applied Sciences, Charmo University, Peshawa Street, Chamchamal, 46023, Sulaimani, Iraq
| | - Dlzar D Ghafour
- Department of Medical Laboratory Science, College of Science, Komar University of Science and Technology, Sulaimani, 46001, Sulaimani, Iraq
- Department of Chemistry, College of Science, University of Sulaimani, Sulaimani, 46001, Sulaimani, Iraq
| | - Arif Kivrak
- Department of Chemistry, Faculty of Sciences and Arts, Eskisehir Osmangazi University, Eskişehir, 26040, Turkey
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Ma SB, Liu L, Li X, Xie YH, Shi XP, Wang SW. Virtual screening-molecular docking-activity evaluation of Ailanthus altissima (Mill.) swingle bark in the treatment of ulcerative colitis. BMC Complement Med Ther 2023; 23:197. [PMID: 37322476 DOI: 10.1186/s12906-023-03991-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 05/06/2023] [Indexed: 06/17/2023] Open
Abstract
BACKGROUND The dried bark of Ailanthus altissima (Mill.) Swingle is widely used in traditional Chinese medicine for the treatment of ulcerative colitis. The objective of this study was to explore the therapeutic basis of the dried bark of Ailanthus altissima (Mill.) Swingle for the treatment of ulcerative colitis based on Virtual Screening-Molecular Docking-Activity Evaluation technology. METHODS By searching the Traditional Chinese Medicine Systems Pharmacology TCMSP Database and Analysis Platform, 89 compounds were obtained from the chemical components of the dried bark of Ailanthus altissima (Mill.) Swingle. Then, after preliminarily screening the compounds based on Lipinski's rule of five and other relevant conditions, the AutoDock Vina molecular docking software was used to evaluate the affinity of the compounds to ulcerative colitis-related target proteins and their binding modes through use of the scoring function to identify the best candidate compounds. Further verification of the compound's properties was achieved through in vitro experiments. RESULTS Twenty-two compounds obtained from the secondary screening were molecularly docked with ulcerative colitis-related target proteins (IL-1R, TLR, EGFR, TGFR, and Wnt) using AutoDock Vina. The free energies of the highest scoring compounds binding to the active cavity of human IL-1R, TLR, EGFR, TGFR, and Wnt proteins were - 8.7, - 8.0, - 9.2, - 7.7, and - 8.5 kcal/mol, respectively. The potential compounds, dehydrocrebanine, ailanthone, and kaempferol, were obtained through scoring function and docking mode analysis. Furthermore, the potential compound ailanthone (1, 3, and 10 µM) was found to have no significant effect on cell proliferation, though at 10 µM it reduced the level of pro-inflammatory factors caused by lipopolysaccharide. CONCLUSION Among the active components of the dried bark of Ailanthus altissima (Mill.) Swingle, ailanthone plays a major role in its anti-inflammatory properties. The present study shows that ailanthone has advantages in cell proliferation and in inhibiting of inflammation, but further animal research is needed to confirm its pharmaceutical potential.
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Affiliation(s)
- Shan-Bo Ma
- The College of Life Sciences, Northwest University, 229 Taibai Road, Xi'an, 710069, Shaanxi, China
| | - Lun Liu
- The College of Life Sciences, Northwest University, 229 Taibai Road, Xi'an, 710069, Shaanxi, China
| | - Xiang Li
- The College of Life Sciences, Northwest University, 229 Taibai Road, Xi'an, 710069, Shaanxi, China
| | - Yan-Hua Xie
- The College of Life Sciences, Northwest University, 229 Taibai Road, Xi'an, 710069, Shaanxi, China
| | - Xiao-Peng Shi
- Department of Pharmacy, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China.
| | - Si-Wang Wang
- The College of Life Sciences, Northwest University, 229 Taibai Road, Xi'an, 710069, Shaanxi, China.
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Rasul HO, Aziz BK, Ghafour DD, Kivrak A. Discovery of potential mTOR inhibitors from Cichorium intybus to find new candidate drugs targeting the pathological protein related to the breast cancer: an integrated computational approach. Mol Divers 2023; 27:1141-1162. [PMID: 35737256 DOI: 10.1007/s11030-022-10475-9] [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: 03/02/2022] [Accepted: 05/31/2022] [Indexed: 10/17/2022]
Abstract
Breast cancer is the most common malignancy among women. It is a complex condition with many subtypes based on the hormone receptor. The mammalian target of the rapamycin (mTOR) pathway regulates cell survival, metabolism, growth, and protein synthesis in response to upstream signals in both normal physiological and pathological situations, primarily in cancer. The objective of this study was to screen for a potential target to inhibit the mTOR using a variety of inhibitors derived from Cichorium intybus and to identify the one with the highest binding affinity for the receptor protein. Initially, AutoDock Vina was used to perform structure-based virtual screening, as protein-like interactions are critical in drug development. For the comparative analysis, 110 components of Cichorium intybus were employed and ten FDA-approved anticancer medicines, including everolimus, an mTOR inhibitor. Further, the drug-likeness and ADMET properties were investigated to evaluate the anti-breast cancer activity by applying Lipinski's rule of five to the selected molecules. The promising candidates were then subjected to three replica molecular dynamics simulations run for 100 ns, followed by binding free energy estimation using MM-GBSA. The data were analyzed using root-mean-square deviation (RMSD), root-mean-square fluctuation (RMSF), and protein-ligand interactions to determine the stability of the protein-ligand complex. Based on the results, taraxerone (98) revealed optimum binding affinities with mTOR, followed by stigmasterol (110) and rutin (104), which compared favorably to the control compounds. Subsequently, bioactive compounds derived from Cichorium intybus may serve as lead molecules for developing potent and effective mTOR inhibitors to treat breast cancer.
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Affiliation(s)
- Hezha O Rasul
- Department of Pharmaceutical Chemistry, College of Medicals and Applied Sciences, Charmo University, Peshawa Street, Chamchamal, Sulaimani, 46023, Iraq.
| | - Bakhtyar K Aziz
- Department of Nanoscience and Applied Chemistry, College of Medicals and Applied Sciences, Charmo University, Peshawa Street, Chamchamal, Sulaimani, 46023, Iraq
| | - Dlzar D Ghafour
- Department of Medical Laboratory Science, College of Science, Komar University of Science and Technology, Sulaimani, 46001, Iraq
- Department of Chemistry, College of Science, University of Sulaimani, Sulaimani, 46001, Iraq
| | - Arif Kivrak
- Department of Chemistry, Faculty of Sciences and Arts, Eskisehir Osmangazi University, Eskişehir, 26040, Turkey
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Parate S, Kumar V, Hong JC, Lee KW. Investigation of Macrocyclic mTOR Modulators of Rapamycin Binding Site via Pharmacoinformatics Approaches. Comput Biol Chem 2023; 104:107875. [PMID: 37148678 DOI: 10.1016/j.compbiolchem.2023.107875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 04/19/2023] [Accepted: 04/22/2023] [Indexed: 05/08/2023]
Abstract
The PI3K/Akt/mTOR is an essential intracellular signaling pathway in which the serine/threonine mTOR kinase portrays a major role in cell growth, proliferation and survival. The mTOR kinase is frequently dysregulated in a broad spectrum of cancers, thus making it a potential target. Rapamycin and its analogs (rapalogs) allosterically inhibit mTOR, thereby dodging the deleterious effects prompted by ATP-competitive mTOR inhibitors. However, the available mTOR allosteric site inhibitors exhibit low oral bioavailability and suboptimal solubility. Bearing in mind this narrow therapeutic window of the current allosteric mTOR inhibitors, an in silico study was designed in search of new macrocyclic inhibitors. The macrocycles from the ChemBridge database (12,677 molecules) were filtered for their drug-likeness properties and the procured compounds were subjected for molecular docking within the binding cleft between FKBP25 and FRB domains of mTOR. The docking analysis resulted with 15 macrocycles displaying higher scores than the selective mTOR allosteric site inhibitor, DL001. The docked complexes were refined by subsequent molecular dynamics simulations for a period of 100 ns. Successive binding free energy computation revealed a total of 7 macrocyclic compounds (HITS) demonstrating better binding affinity than DL001, towards mTOR. The consequent assessment of pharmacokinetic properties resulted in HITS with similar or better properties than the selective inhibitor, DL001. The HITS from this investigation could act as effective mTOR allosteric site inhibitors and serve as macrocyclic scaffolds for developing compounds targeting the dysregulated mTOR.
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Affiliation(s)
- Shraddha Parate
- Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Division of Applied Life Science, Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, South Korea; Department of Chemistry and Molecular Biology, University of Gothenburg, 405 30 Göteborg, Sweden.
| | - Vikas Kumar
- Department of Bio & Medical Big Data (BK4 Program), Division of Life Sciences, Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, South Korea
| | - Jong Chan Hong
- Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Division of Applied Life Science, Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, South Korea.
| | - Keun Woo Lee
- Department of Bio & Medical Big Data (BK4 Program), Division of Life Sciences, Research Institute of Natural Science (RINS), Gyeongsang National University (GNU), 501 Jinju-daero, Jinju 52828, South Korea.
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He Z, Hu Y, Niu Z, Zhong K, Liu T, Yang M, Ji L, Hu W. A review of pharmacokinetic and pharmacological properties of asiaticoside, a major active constituent of Centella asiatica (L.) Urb. JOURNAL OF ETHNOPHARMACOLOGY 2023; 302:115865. [PMID: 36306932 DOI: 10.1016/j.jep.2022.115865] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/10/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Centella asiatica (L.) Urb., a potential medicinal plant, is widely used in orient traditional medicine. Its major active constituents include asiaticoside (AS), madecassoside (MS), asiatic acid and madecassic acid. Thereinto, AS is a pentacyclic triterpenoid saponin with a variety of pharmacological effects including antitumor, neuroprotective and wound healing effects. AIM OF THE STUDY In this review, we summarize the pharmacokinetics, safety and pharmacological properties of AS. MATERIALS AND METHODS We gathered information about AS from articles published up to 2022 and listed in Google scholar, PubMed, Web of Science, Elsevier, and similar databases. The keywords used in our search included "asiaticoside", "Centella asiatica", "pharmacokinetics", "nerve", "cancer", "skin", etc. RESULTS: AS appeared to degrade through a first-order reaction and had low biotoxicity. However, the pharmacokinetic properties of AS differed according to species. AS is highly blood-brain-barrier permeable without any harmful side effect. It has a variety of pharmacological effects including anti-neural inflammation and anti-cancer properties, as well as protective properties for the skin, cardiovascular system, and pulmonary system. CONCLUSION This review comprehensively summarized current information regarding the pharmacokinetic and pharmacological properties of AS, and supported the pharmaceutical value of this compound. Future research should focus on improving bioavailability of AS and conducting clinical assessment.
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Affiliation(s)
- Ziliang He
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, China; School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Yeye Hu
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Zhiqiang Niu
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Kang Zhong
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Tingwu Liu
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
| | - Meng Yang
- Jiangsu Food and Pharmaceutical Science College, Huaian, 223300, China.
| | - Lilian Ji
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, China.
| | - Weicheng Hu
- School of Life Sciences, Huaiyin Normal University, Huaian, 223300, China.
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Zeng Q, Xiong Q, Lin K, Liang Z, Zhou M, Tian X, Xu C, Ru Q. Terminalia chebula extracts ameliorate methamphetamine-induced memory deficits via activating the ERK and Nrf2 pathway. Brain Res Bull 2022; 184:76-87. [DOI: 10.1016/j.brainresbull.2022.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 03/15/2022] [Accepted: 04/05/2022] [Indexed: 11/02/2022]
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10
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Ru Q, Xiong Q, Tian X, Xu C, Li C, Chen L, Wu Y. Candidate Chinese Herbal Medicine Alleviates Methamphetamine Addiction via Regulating Dopaminergic and Serotonergic Pathways. Front Mol Neurosci 2022; 15:874080. [PMID: 35422687 PMCID: PMC9002015 DOI: 10.3389/fnmol.2022.874080] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 03/03/2022] [Indexed: 01/18/2023] Open
Abstract
Methamphetamine (METH) addiction and its induced mental disorders have become a severe worldwide problem. A candidate Chinese herbal medicine (CCHM) in our lab had therapeutic effects on METH-induced locomotor sensitization, however, its chemical and pharmacological profiles remain to be elucidated. The current study aimed to investigate the effect of CCHM on conditioned place preference (CPP) induced by METH and screen the main active ingredients and key targets by using network pharmacology and molecular docking methods. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment, Gene ontology (GO) analysis and protein-protein interaction (PPI) network were performed to discover the potential mechanisms. Results showed that CCHM could significantly inhibit METH-induced CPP behaviors in mice. A total of 123 components and 43 targets were screened. According to the network pharmacology analysis, ten hub targets including D(2) dopamine receptor (DRD2) and 5-hydroxytryptamine receptor 3A (HTR3A) were screened. GO analysis and KEGG enrichment indicated that mechanisms of CCHM treatment of METH addiction were related to multiple pathways such as dopaminergic synapse and serotoninergic synapse. Western blot results showed that the protein expressions of DRD2 in nucleus accumbens and prefrontal cortex were significantly decreased in METH group, while the protein expressions of HTR3A were significantly increased. These changes caused by METH could be prevented by CCHM pretreatment. The results of molecular docking displayed that the five active ingredients such as (S)-Scoulerine, Hyndarin, and Beta-Sitosterol had good affinities with DRD2 and HTR3A. In conclusion, this study constructed the CCHM's pharmacologic network for treating METH addiction based on the method of network analysis and experimental verification, and analyzed its major active ingredients and potential targets, indicating a new direction for further revealing its mechanisms of effect on METH addiction.
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Affiliation(s)
- Qin Ru
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China,Department of Health and Physical Education, Jianghan University, Wuhan, China
| | - Qi Xiong
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Xiang Tian
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Congyue Xu
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Can Li
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Lin Chen
- Department of Health and Physical Education, Jianghan University, Wuhan, China,*Correspondence: Lin Chen,
| | - Yuxiang Wu
- Department of Health and Physical Education, Jianghan University, Wuhan, China,Yuxiang Wu,
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11
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Bailly C. The health benefits of santol fruits and bioactive products isolated from Sandoricum koetjape Merr.: A scoping review. J Food Biochem 2022; 46:e14152. [PMID: 35315091 DOI: 10.1111/jfbc.14152] [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] [Received: 01/12/2022] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 11/27/2022]
Abstract
The santol tree (Sandoricum koetjape Merr.) is largely distributed in Southeast Asia. It produces useful timber and edible fruits, consumed fresh, and transformed. It has a wide range of traditional medicinal uses for the treatment of inflammatory disorders and digestive troubles. Numerous bioactive natural products have been isolated from the roots, leaves, stems, and fruits of S. koetjape, including flavonoids, limonoids, and terpenoids. The seeds are considered toxic and contain insecticidal limonoids. The present review provides a survey of the natural products isolated from different parts of the plant and discusses their pharmacological properties. Information on S. koetjape was collected through databases and analyzed, leading to the identification of about 30 natural products of interest. Bioactive compounds include limonoids, such as sandoripins A-B, sanjecumins A-B, and sandrapins A-E, and flavonoids with antioxidant, antibacterial, and insecticidal properties such as sandoricin and sandoripin derivatives. The santol plant contains various anti-inflammatory triterpenes, such as sentulic acid and koetjapic acid (KA). KA is the main product found in santol and a few other plants. This tetracyclic triterpenoid is endowed with anti-inflammatory and anticancer properties, with marked antimetastatic and antiangiogenic effects. Its potential molecular targets are discussed, notably the kinase mammalian target of rapamycin (mTOR) and other proteins (cyclooxygenase 2, DNA polymerase-β). The water-soluble derivative potassium koetjapate (KK) affords an orally bioavailable derivative, with superior antiangiogenic properties compared to KA. The health benefits associated with the consumption of santol fruits shall be further considered, and the design of hemi-synthetic analogs of KA encouraged. PRACTICAL APPLICATIONS: The fruits of the santol tree are largely consumed in Asia and different parts of the plant (Sandoricum koetjape Merr.) are used in traditional medicine. Diverse bioactive terpenoids have been isolated from the plant. Their pharmacological properties are reviewed here, with a focus on the triterpene koetjapic acid which displays marked anti-inflammatory and anticancer properties. Several other bioactive natural products, including limonoids and flavonoids, are evoked as well, to shed light on the many active compounds found in the fruits and the whole plant. For a healthy life, the use of the plant in phytomedicine and the consumption of the santol fruit should be encouraged.
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12
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Putative dual inhibitors of mTOR and RET kinase from natural products: Pharmacophore-based hierarchical virtual screening. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Shams R, Ito Y, Miyatake H. Mapping of mTOR drug targets: Featured platforms for anti-cancer drug discovery. Pharmacol Ther 2021; 232:108012. [PMID: 34624427 DOI: 10.1016/j.pharmthera.2021.108012] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/25/2021] [Accepted: 09/28/2021] [Indexed: 12/12/2022]
Abstract
The mammalian/mechanistic target of rapamycin (mTOR) is a regulatory protein kinase involved in cell growth and proliferation. mTOR is usually assembled in two different complexes with different regulatory mechanisms, mTOR complex 1 (mTORC1) and mTORC2, which are involved in different functions such as cell proliferation and cytoskeleton assembly, respectively. In cancer cells, mTOR is hyperactivated in response to metabolic alterations and/or oncogenic signals to overcome the stressful microenvironments. Therefore, recent research progress for mTOR inhibition involves a variety of compounds that have been developed to disturb the metabolic processes of cancer cells through mTOR inhibition. In addition to competitive or allosteric inhibition, a new inhibition strategy that emerged mTOR complexes destabilization has recently been a concern. Here, we review the history of mTOR and its inhibition, along with the timeline of the mTOR inhibitors. We also introduce prospective drug targets to inhibit mTOR by disrupting the complexation of the components with peptides and small molecules.
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Affiliation(s)
- Raef Shams
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, RIKEN, Wako, Saitama 351-0198, Japan; Department of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan.
| | - Yoshihiro Ito
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, RIKEN, Wako, Saitama 351-0198, Japan; Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, RIKEN, Wako, Saitama 351-0198, Japan
| | - Hideyuki Miyatake
- Department of Life Science, Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan; Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, RIKEN, Wako, Saitama 351-0198, Japan.
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14
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Drygalski K, Fereniec E, Zalewska A, Krętowski A, Żendzian-Piotrowska M, Maciejczyk M. Phloroglucinol prevents albumin glycation as well as diminishes ROS production, glycooxidative damage, nitrosative stress and inflammation in hepatocytes treated with high glucose. Biomed Pharmacother 2021; 142:111958. [PMID: 34333287 DOI: 10.1016/j.biopha.2021.111958] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 12/18/2022] Open
Abstract
The treatment of diabetes mellitus aftermaths became one of medicine's most significant therapeutical and financial issues in the XXI century. Most of which are related to protein glycation and oxidative stress caused by long lasting periods of hyperglycemia. Thus, even within a venerable one, searching for new drugs, displaying anti-glycation and anti-oxidative properties seem useful as an additive therapy of diabetes. In this paper, we assessed the anti-glycating properties of phloroglucinol, a drug discovered in the XIX century and still used in many countries for its antispasmodic action. Herewith, we present its effect on protein glycation, glycoxidation, and oxidative damage in an albumin glycation/oxidation model and HepG2 cells treated with high glucose concentrations. The phloroglucinol showed the strongest and the widest protective effect within all analyzed antiglycating (aminoguanidine, pioglitazone) and anti-oxidative (vitamin C, GSH) agents. To the very best of our knowledge, this is the first study showing the properties of phloroglucinol in vitro what once is proven in other models might deepen its clinical applications.
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Affiliation(s)
- Krzysztof Drygalski
- Clinical Research Center, Medical University of Bialystok, Poland; Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, Poland.
| | | | - Anna Zalewska
- Experimental Dentistry Laboratory, Medical University of Bialystok, Poland
| | - Adam Krętowski
- Clinical Research Center, Medical University of Bialystok, Poland; Department of Endocrinology, Diabetology and Internal Medicine, Medical University of Bialystok, Poland
| | | | - Mateusz Maciejczyk
- Department of Hygiene, Epidemiology and Ergonomics, Medical University of Bialystok, Poland.
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15
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Wei J, Huang F, Feng H, Massey IY, Clara T, Long D, Cao Y, Luo J, Yang F. Characterization and Mechanism of Linearized-Microcystinase Involved in Bacterial Degradation of Microcystins. Front Microbiol 2021; 12:646084. [PMID: 33859631 PMCID: PMC8042282 DOI: 10.3389/fmicb.2021.646084] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 02/22/2021] [Indexed: 01/17/2023] Open
Abstract
Microcystins (MCs) are extremely hazardous to the ecological environment and public health. How to control and remove MCs is an unsolved problem all over the world. Some microbes and their enzymes are thought to be effective in degrading MCs. Microcystinase can linearize microcystin-leucine-arginine (MC-LR) via a specific locus. However, linearized MC-LR is also very toxic and needs to be removed. How linearized MC-LR was metabolized by linearized-microcystinase, especially how linearized-microcystinase binds to linearized MC-LR, has not been defined. A combination of in vitro experiments and computer simulation was applied to explore the characterization and molecular mechanisms for linearized MC-LR degraded by linearized-microcystinase. The purified linearized-microcystinase was obtained by recombinant Escherichia coli overexpressing. The concentration of linearized MC-LR was detected by high-performance liquid chromatography, and linearized MC-LR degradation products were analyzed by the mass spectrometer. Homology modeling was used to predict the structure of the linearized-microcystinase. Molecular docking techniques on the computer were used to simulate the binding sites of linearized-microcystinase and linearized MC-LR. The purified linearized-microcystinase was obtained successfully. The linearized-microcystinase degraded linearized MC-LR to tetrapeptide efficiently. The second structure of linearized-microcystinase consisted of many alpha-helices, beta-strands, and colis. Linearized-microcystinase interacted the linearized MC-LR with hydrogen bond, hydrophobic interaction, electrostatic forces, and the Van der Waals force. This study firstly reveals the characterization and specific enzymatic mechanism of linearized-microcystinase for catalyzing linearized MC-LR. These findings encourage the application of MC-degrading engineering bacteria and build a great technique for MC-LR biodegradation in environmental engineering.
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Affiliation(s)
- Jia Wei
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, China
| | - Feiyu Huang
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, China
| | - Hai Feng
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, China
| | - Isaac Yaw Massey
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, China
| | - Tezi Clara
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, China
| | - Dingxin Long
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang, China
| | - Yi Cao
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang, China
| | - Jiayou Luo
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, China
| | - Fei Yang
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, China.,Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang, China.,Key Laboratory of Environmental Medicine Engineering, School of Public Health Southeast University, Ministry of Education, Nanjing, China
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16
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Zhao DF, Fan YF, Wang FY, Hou FB, Gonzalez FJ, Li SY, Wang P, Xia YL, Ge GB, Yang L. Discovery and characterization of naturally occurring potent inhibitors of catechol- O-methyltransferase from herbal medicines. RSC Adv 2021; 11:10385-10392. [PMID: 35423513 PMCID: PMC8695704 DOI: 10.1039/d0ra10425f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/28/2021] [Indexed: 12/19/2022] Open
Abstract
Human catechol-O-methyltransferase (hCOMT) is considered a therapeutic target due to its crucial roles in the metabolic inactivation of endogenous neurotransmitters and xenobiotic drugs. There are nevertheless few safe and effective COMT inhibitors and there lacks a diversity in structure. To discover novel safe and effective hCOMT inhibitors from herbal products, in this study, 53 herbal products were collected and their inhibitory effects against hCOMT were investigated. Among them, Scutellariae radix (SR) displayed the most potent inhibitory effect on hCOMT with an IC50 value of 0.75 μg mL-1. To further determine specific chemicals as COMT inhibitors, an affinity ultrafiltration coupled with liquid chromatography-mass spectrometry method was developed and successfully applied to identify COMT inhibitors from SR extract. The results demonstrated that scutellarein 2, baicalein 9 and oroxylin A 12 were potent COMT inhibitors, showing a high binding index (>3) and very low IC50 values (32.9 ± 3.43 nM, 37.3 ± 4.32 nM and 18.3 ± 2.96 nM). The results of inhibition kinetics assays and docking simulations showed that compounds 2, 9 and 12 were potent competitive inhibitors against COMT-mediated 3-BTD methylation, and they could stably bind to the active site of COMT. These findings suggested that affinity ultrafiltration allows a rapid identification of natural COMT inhibitors from a complex plant extract matrix. Furthermore, scutellarein 2, baicalein 9 and oroxylin A 12 are potent inhibitors of hCOMT in SR, which could be used as promising lead compounds to develop more efficacious non-nitrocatechol COMT inhibitors for biomedical applications.
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Affiliation(s)
- Dong-Fang Zhao
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
| | - Yu-Fan Fan
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
| | - Fang-Yuan Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
| | - Fan-Bin Hou
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
| | - Frank J Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health Bethesda MD 20892 USA
| | - Shi-Yang Li
- Analytical Central Laboratory, Shenyang Harmony Health Medical Laboratory Co. Ltd Shenyang 210112 China
| | - Ping Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health Bethesda MD 20892 USA
| | - Yang-Liu Xia
- School of Life Science and Medicine, Dalian University of Technology Panjin 124221 China
| | - Guang-Bo Ge
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
| | - Ling Yang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
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17
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Zeng Q, Xiong Q, Zhou M, Tian X, Yue K, Li Y, Shu X, Ru Q. Resveratrol attenuates methamphetamine-induced memory impairment via inhibition of oxidative stress and apoptosis in mice. J Food Biochem 2021; 45:e13622. [PMID: 33502009 DOI: 10.1111/jfbc.13622] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 12/07/2020] [Accepted: 01/04/2021] [Indexed: 11/26/2022]
Abstract
Methamphetamine (METH) abuse produces serious neurotoxicity to the central nervous system along with long-term cognitive dysfunction. Resveratrol, a natural polyphenol, has broad application prospects in the treatment of neurodegenerative diseases. Therefore, this study was conducted to investigate whether resveratrol might alleviate METH-induced memory deficits in vivo. We found that multiple exposures to METH significantly impaired cognitive functions and caused long-lasting memory deficits (p < .05). Pretreatment of resveratrol (10 or 100 mg/kg) remarkably attenuated METH-induced memory impairment in mice (p < .05). Bioinformatics analysis results showed that resveratrol might alleviate memory deficits by inhibiting METH-induced oxidative damage and apoptosis. Molecular docking showed that resveratrol had hydrogen bonding interactions with Kelch-like ECH associated protein 1 (Keap1), a repressor protein of the classic antioxidant Keap1-Nrf2 pathway. Further results validated oxidative stress parameters, apoptosis, and expression of Keap1 were significantly increased, while the translocation and activation of nuclear factor erythroid 2-related factor 2 (Nrf2) into the nucleus and expression of its downstream proteins were greatly decreased in the hippocampus after METH exposure (p < .05). These changes caused by METH could be prevented by resveratrol (p < .05). Therefore, these findings suggested that the prevention of resveratrol on memory dysfunction induced by METH was possibly related to the activation of the Keap1-Nrf2 pathway and reduction of apoptosis. Supplementation of resveratrol could be a potential treatment for preventing the neurotoxicity of METH in the future. PRACTICAL APPLICATIONS: As one of the worst commonly abused psychostimulants, methamphetamine (METH) addiction produces serious complications including cognitive impairment and memory deficits. Resveratrol is a natural polyphenol that has important nutritional supplements and protective effects in the treatment of many neurodegenerative diseases. In this study, the results of bioinformatics prediction and experimental validation showed that resveratrol might effectively prevent memory impairment via the interaction with Keap1, activation of the Keap1-Nrf2 pathway, and inhibition of DNA damage and apoptotic responses post METH exposure. Therefore, these findings provide new ideas and insights into the application of resveratrol in the treatment of nervous system damage caused by METH.
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Affiliation(s)
- Qing Zeng
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Qi Xiong
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Mei Zhou
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Xiang Tian
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Kai Yue
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Yi Li
- Wuhan Mental Health Center, Wuhan, China
| | - Xiji Shu
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
| | - Qin Ru
- Wuhan Institutes of Biomedical Sciences, School of Medicine, Jianghan University, Wuhan, China
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