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Kempster P, Ma A. Parkinson’s disease, dopaminergic drugs and the plant world. Front Pharmacol 2022; 13:970714. [PMID: 36133818 PMCID: PMC9483127 DOI: 10.3389/fphar.2022.970714] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 07/22/2022] [Indexed: 11/13/2022] Open
Abstract
A large proportion of drugs used for the treatment of neurological disorders relate to naturally occurring compounds, many of which are plant alkaloids. This is particularly true of Parkinson’s disease (PD). The pharmacopoeia of PD has strong botanical origins, while major discoveries about the neurochemistry of the basal ganglia came from the study of phytochemicals. This article narrates the development of pharmacotherapy for PD in terms of historically important plant-derived substances—tropane and hamala alkaloids, reserpine, levodopa, apomorphine, and ergoline dopamine receptor agonists. Alkaloids are nitrogen-containing secondary metabolic products that tend to be biologically active. They appear to be involved in plants’ adaptation to herbivorous animals, though their exact purpose and the ways in which they work are uncertain. A sizable group of alkaloids influence animal dopaminergic systems, highlighting a key biological relationship. While animals must acquire the energy that plants harness, plants need to engage with the animal attribute that they lack—movement—in order to maximize their reproductive fitness. Neuroactive flowering plant compounds have been interacting with vertebrate and invertebrate motor systems for 100 million years. A deep evolutionary connection helps to explain why the pharmacological treatment of PD is imprinted with the power of these mysterious botanical chemicals.
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Affiliation(s)
- Peter Kempster
- Neurosciences Department, Monash Medical Centre, Clayton, VIC, Australia
- School of Clinical Sciences of Medicine, Monash University, Clayton, VIC, Australia
- *Correspondence: Peter Kempster,
| | - Andrew Ma
- Neurosciences Department, Monash Medical Centre, Clayton, VIC, Australia
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2
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Bayazeid O, Nasibova T. Chemoinformatic analysis of alkaloids isolated from Peganum genus. Mol Divers 2021; 26:2257-2267. [PMID: 34674079 DOI: 10.1007/s11030-021-10331-2] [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: 03/30/2021] [Accepted: 09/29/2021] [Indexed: 10/20/2022]
Abstract
Peganum genus is rich with its high phytochemical and botanical variability. Peganum species have been used as a sedative, antitumor, analgesic and antidepressant. This paper aims to study the molecular diversity of Peganum genus and to shed more light on the structure-activity relationship of the alkaloids isolated from Peganum genus. All Peganum alkaloids were grouped according to their structural properties. A chemoinformatic approach (SwissTargetPrediction) was used to determine the molecular targets of these alkaloids. To analyze and visualize the results, R software was used to generate hierarchical clustering heatmaps. The results of this study can help researchers to better understand the structure-activity relationship of Peganum alkaloids and how substitution can affect the biological activity of those alkaloids.
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Affiliation(s)
- Omer Bayazeid
- Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, Sihhiye, 06100, Ankara, Turkey.
| | - Tohfa Nasibova
- Department of General and Toxicological Chemistry, Azerbaijan Medical University, A. Gasimzade 14, AZ1022, Baku, Azerbaijan
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Valadez-García KM, Avendaño-Reyes L, Meza-Herrera CA, Mellado M, Díaz-Molina R, González-Ríos H, Macías-Cruz U. Ferulic acid in animal feeding: Mechanisms of action, productive benefits, and future perspectives in meat production. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Wang FY, Wei GL, Fan YF, Zhao DF, Wang P, Zou LW, Yang L. Inhibition of catechol- O-methyltransferase by natural pentacyclic triterpenes: structure-activity relationships and kinetic mechanism. J Enzyme Inhib Med Chem 2021; 36:1079-1087. [PMID: 34030574 PMCID: PMC8158265 DOI: 10.1080/14756366.2021.1928112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Abstract
Inhibitors of COMT are clinically used for the treatment of Parkinson's disease. Here, we report the first natural pentacyclic triterpenoid-type COMT inhibitors and their structure-activity relationships and inhibition mechanism. The most potent compounds were found to be oleanic acid, betulinic acid and celastrol with IC50 values of 3.89-5.07 μM, that acted as mixed (uncompetitive plus non-competitive) inhibitors of COMT, representing a new skeleton of COMT inhibitor. Molecular docking suggested that they can specifically recognise and bind with the unique hydrophobic residues surrounding the catechol pocket. Furthermore, oleanic acid and betulinic acid proved to be less disruptive of mitochondrial membrane potential (MMP) compared to tolcapone, thus reducing the risk of liver toxicity. These findings could be used to produce an ideal lead compound and to guide synthetic efforts in generating related derivatives for further preclinical testing.
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Affiliation(s)
- Fang-Yuan Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Gui-Lin Wei
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yu-Fan Fan
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Dong-Fang Zhao
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ping Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Li-Wei Zou
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ling Yang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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Zhao DF, Fan YF, Yu HN, Hou FB, Xiang YW, Wang P, Ge GB, Yang L, Xu JG. Discovery and characterization of flavonoids in vine tea as catechol-O-methyltransferase inhibitors. Fitoterapia 2021; 152:104913. [PMID: 33932529 DOI: 10.1016/j.fitote.2021.104913] [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: 03/09/2021] [Revised: 04/25/2021] [Accepted: 04/25/2021] [Indexed: 10/21/2022]
Abstract
Vine tea has been used as a traditionally functional herbal tea in China for centuries, which exhibits paramount potential for chronic metabolic diseases. Herein, the inhibitory potential of vine tea toward human catechol-O-methyltransferase (hCOMT) was investigated. A practical bioactivity-guided fractionation combined with chemical profiling strategy was developed to identify the naturally occurring hCOMT inhibitors. Five flavonoids in vine tea displayed moderate to strong inhibition on hCOMT with IC50 values ranging from 0.96 μM to 42.47 μM, in which myricetin was the critically potent constituent against hCOMT. Inhibition kinetics assays and molecular docking simulations showed that myricetin could bind to the active site of COMT and inhibited COMT-catalyzed 3-BTD methylation in a mixed manner. Collectively, our findings not only suggested that the strong hCOMT inhibition of vine tea has guiding significance in the drug exposure of catechol drugs, but also identified a promising lead compound for developing more efficacious hCOMT inhibitors.
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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
| | - Hao-Nan Yu
- 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
| | - Yan-Wei Xiang
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ping Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, 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
| | - Jian-Guang Xu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
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Kim JH, Lee J, Jeong H, Bang MS, Jeong JH, Chang M. Nordihydroguaiaretic Acid as a Novel Substrate and Inhibitor of Catechol O-Methyltransferase Modulates 4-Hydroxyestradiol-Induced Cyto- and Genotoxicity in MCF-7 Cells. Molecules 2021; 26:molecules26072060. [PMID: 33916785 PMCID: PMC8038350 DOI: 10.3390/molecules26072060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 01/13/2023] Open
Abstract
Nordihydroguaiaretic acid (NDGA) is a major lignan metabolite found in Larrea spp., which are widely used in South America to treat various diseases. In breast tissue, estradiol is metabolized to the catechol estrogens such as 4-hydroxyestradiol (4-OHE2), which have been proposed to be cancer initiators potentially involved in mammary carcinogenesis. Catechol-O-methyltransferase (COMT) catalyzes the O-methylation of catechol estrogens to their less toxic methoxy derivatives, such as 4-O-methylestradiol (4-MeOE2). The present study investigated the novel biological activities of NDGA in relation to COMT and the effects of COMT inhibition by NDGA on 4-OHE2-induced cyto- and genotoxicity in MCF-7 human breast cancer cells. Two methoxylated metabolites of NDGA, 3-O-methylNDGA (3-MNDGA) and 4-O-methyl NDGA (4-MNDGA), were identified in the reaction mixture containing human recombinant COMT, NDGA, and cofactors. Km values for the COMT-catalyzed metabolism of NDGA were 2.6 µM and 2.2 µM for 3-MNDGA and 4-MNDGA, respectively. The COMT-catalyzed methylation of 4-OHE2 was inhibited by NDGA at an IC50 of 22.4 µM in a mixed-type mode of inhibition by double reciprocal plot analysis. Molecular docking studies predicted that NDGA would adopt a stable conformation at the COMT active site, mainly owing to the hydrogen bond network. NDGA is likely both a substrate for and an inhibitor of COMT. Comet and apurinic/apyrimidinic site quantitation assays, cell death, and apoptosis in MCF-7 cells showed that NDGA decreased COMT-mediated formation of 4-MeOE2 and increased 4-OHE2-induced DNA damage and cytotoxicity. Thus, NDGA has the potential to reduce COMT activity in mammary tissues and prevent the inactivation of mutagenic estradiol metabolites, thereby increasing catechol estrogen-induced genotoxicities.
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Affiliation(s)
- Jin-Hee Kim
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon 21983, Korea; (J.-H.K.); (J.-H.J.)
| | - Jimin Lee
- Graduate School of Biological Sciences, Sookmyung Women’s University, Seoul 04310, Korea; (J.L.); (H.J.)
| | - Hyesoo Jeong
- Graduate School of Biological Sciences, Sookmyung Women’s University, Seoul 04310, Korea; (J.L.); (H.J.)
| | - Mi Seo Bang
- Department of Biological Sciences, Sookmyung Women’s University, Seoul 04310, Korea;
| | - Jin-Hyun Jeong
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon 21983, Korea; (J.-H.K.); (J.-H.J.)
| | - Minsun Chang
- Department of Biological Sciences, Sookmyung Women’s University, Seoul 04310, Korea;
- Research Institute for Asian Women, Sookmyung Women’s University, Seoul 04309, Korea
- Research Institute for Women’s Health, Sookmyung Women’s University, Seoul 04310, Korea
- Correspondence: ; Tel.: +82-2-2077-7626
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Wang FY, Wang P, Zhao DF, Gonzalez FJ, Fan YF, Xia YL, Ge GB, Yang L. Analytical methodologies for sensing catechol- O-methyltransferase activity and their applications. J Pharm Anal 2021; 11:15-27. [PMID: 33717608 PMCID: PMC7930641 DOI: 10.1016/j.jpha.2020.03.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 03/21/2020] [Accepted: 03/30/2020] [Indexed: 01/02/2023] Open
Abstract
Mammalian catechol-O-methyltransferases (COMT) are an important class of conjugative enzymes, which play a key role in the metabolism and inactivation of catechol neurotransmitters, catechol estrogens and a wide range of endobiotics and xenobiotics that bear the catechol group. Currently, COMT inhibitors are used in combination with levodopa for the treatment of Parkinson's disease in clinical practice. The crucial role of COMT in human health has raised great interest in the development of more practical assays for highly selective and sensitive detection of COMT activity in real samples, as well as for rapid screening and characterization of COMT inhibitors as drug candidates. This review summarizes recent advances in analytical methodologies for sensing COMT activity and their applications. Several lists of biochemical assays for measuring COMT activity, including the probe substrates, along with their analytical conditions and kinetic parameters, are presented. Finally, the challenges and future perspectives in the field, such as visualization of COMT activity in vivo and in situ, are highlighted. Collectively, this review article overviews the practical assays for measuring COMT activities in complex biological samples, which will strongly facilitate the investigations on the relevance of COMT to human diseases and promote the discovery of COMT inhibitors via high-throughput screening.
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Affiliation(s)
- Fang-Yuan Wang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, 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, USA
| | - Dong-Fang Zhao
- 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, USA
| | - Yu-Fan Fan
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - 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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Akhtar MJ, Yar MS, Grover G, Nath R. Neurological and psychiatric management using COMT inhibitors: A review. Bioorg Chem 2020; 94:103418. [DOI: 10.1016/j.bioorg.2019.103418] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 10/27/2019] [Accepted: 10/31/2019] [Indexed: 12/18/2022]
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Bhattacharjee M, Perumal E. Potential plant-derived catecholaminergic activity enhancers for neuropharmacological approaches: A review. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 55:148-164. [PMID: 30668425 DOI: 10.1016/j.phymed.2018.07.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 05/07/2018] [Accepted: 07/16/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Catecholamines (CAs) have been reported to be involved in numerous functions including central nervous system. CA release from the intra neuronal storage vesicles aid in the therapy of various neurological and neuropsychiatric disorders where the catecholaminergic neurotransmission is compromised. Bioavailability of CA at the synapse can be increased through stimulated neurotransmitter release, monoamine oxidase and CA reuptake inhibition. Plant based galenicals are reported to have similar CA enhancement activities and have been used for the management of neurological disorders. AIM To review evidence-based literature with plant extracts, bioactive compounds, and composite extracts that modulate central catecholaminergic system, thereby enhancing CA activity for beneficial neurological effect. METHODS Electronic databases such as PubMed, Scopus, and ScienceDirect were used to search scientific contributions until January 2018, using relevant keywords. Literature focusing plant-derived CA enhancing compounds, extracts and/or composite extracts were identified and summarized. In all cases, dose, route of administration, the model system and type of extract were accounted. RESULTS A total of 49 plant extracts, 31 compounds and 16 herbal formulations have shown CA activity enhancement. Stimulated CA release from the storage vesicles, monoamine oxidase and CA reuptake inhibition were the major mechanisms involved in the increase of CA bioavailability by these phytoconstituents. CONCLUSION This review provides an overview on the phytoconstituents with CA enhancement property that have been used for neuropsychiatric disorders. Such herbal remedies will provide an avenue for cost effective and easily available medication which have holistic approach towards disease management. There is also scope for alternate medicines or prototype drug development utilizing these phytomedicines for treating neurodegenerative diseases. However, hurdles are to be met for analyzing the mode and mechanism of action associated with these phytomedicines and their proper scientific documentation.
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Affiliation(s)
- Monojit Bhattacharjee
- Defence Research and Development Organisation - Bharathiar University Center for Life Sciences (DRDO-BU CLS), Bharathiar University Campus, Coimbatore, Tamil Nadu 641046, India
| | - Ekambaram Perumal
- Defence Research and Development Organisation - Bharathiar University Center for Life Sciences (DRDO-BU CLS), Bharathiar University Campus, Coimbatore, Tamil Nadu 641046, India; Molecular Toxicology Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu 641046, India.
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Guo L, Chen W, Cao R, Fan W, Ma Q, Zhang J, Dai B. Synthesis and structure-activity relationships of asymmetric dimeric β-carboline derivatives as potential antitumor agents. Eur J Med Chem 2018; 147:253-265. [PMID: 29448140 DOI: 10.1016/j.ejmech.2018.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 02/02/2018] [Accepted: 02/02/2018] [Indexed: 12/27/2022]
Abstract
A series of newly asymmetric dimeric β-carbolines with a spacer of 4-6 methylene units between the indole nitrogen and the harmine oxygen were synthesized. Structures of all the novel synthesized compounds were confirmed by their spectral and analytical studies. All of the synthesized compounds were screened for their in vitro cytotoxic activity against nine cancer cell lines. The results revealed that compounds 7c, 7o and 7s exhibited the highest cytotoxic activities with IC50 values of less than 20 μM against the tumor cell lines tested. Acute toxicities and antitumor efficacies of the selected compounds in mice were also evaluated, and compound 7o exhibited potent antitumor activities with the tumor inhibition rate of over 40%. The wound healing assay displayed a specific impairment in the motility of the HT-29 cells, which suggested the anti-metastatic potential of compound 7o. Moreover, compound 7o had obvious angiogenesis inhibitory effects in the chicken chorioallantoic membrane (CAM) assay. Preliminary structure-activity relationship (SAR) analysis indicated that: (1) 3-phenylpropyl substituent at the N9-position of the indole ring was the most suitable group giving rise to potent cytotoxic agents; (2) the spacer length affected the antitumor potencies, and four methylene units were more favorable.
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Affiliation(s)
- Liang Guo
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, PR China
| | - Wei Chen
- Xinjiang Huashidan Pharmaceutical Research Co. Ltd., 175 He Nan East Road, Urumqi 830011, PR China
| | - Rihui Cao
- School of Chemistry and Chemical Engineering, Sun Yat-sen University, 135 Xin Gang West Road, Guangzhou 510275, PR China
| | - Wenxi Fan
- Xinjiang Huashidan Pharmaceutical Research Co. Ltd., 175 He Nan East Road, Urumqi 830011, PR China
| | - Qin Ma
- Xinjiang Huashidan Pharmaceutical Research Co. Ltd., 175 He Nan East Road, Urumqi 830011, PR China
| | - Jie Zhang
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, PR China
| | - Bin Dai
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, PR China.
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dos Santos Passos C, Klein-Júnior LC, de Mello Andrade JM, Matté C, Henriques AT. The catechol-O-methyltransferase inhibitory potential of Z-vallesiachotamine by in silico and in vitro approaches. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2015. [DOI: 10.1016/j.bjp.2015.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Jatana N, Sharma A, Latha N. Pharmacophore modeling and virtual screening studies to design potential COMT inhibitors as new leads. J Mol Graph Model 2012; 39:145-64. [PMID: 23280413 DOI: 10.1016/j.jmgm.2012.10.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 09/15/2012] [Accepted: 10/08/2012] [Indexed: 10/27/2022]
Abstract
Catechol-O-methyltransferase (COMT) catalyzes the methylation of catecholamines, including neurotransmitters like dopamine, epinephrine and norepinephrine, leading to their degradation. COMT has been a subject of study for its implications in numerous neurological disorders like Parkinson's disease (PD), schizophrenia, and depression. The COMT gene is associated with many allelic variants, the Val108Met polymorphism being the most clinically significant. Availability of crystal structure of both 108V and 108M forms of human soluble-COMT (S-COMT) facilitated us to use structure-based virtual screening approach to obtain new hits by screening a library of CNS permeable compounds from ZINC database. In this study, E-pharmacophore was also used to generate pharmacophore models based on a series of known COMT inhibitors. A five-point pharmacophore model consisting of one hydrogen-bond acceptor (A), two hydrogen bond donors (D), and two aromatic rings (R) was generated for both the polymorphic forms of COMT. These models were then used for filtering ZINC-CNS permeable library to obtain new hits. Physicochemical properties were also calculated for all the hits obtained from both the approaches for favorable ADME properties. These identified hits maybe of interest for further structural optimization and biological evaluation assays.
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Affiliation(s)
- Nidhi Jatana
- Bioinformatics Infrastructure Facility, Sri Venkateswara College (University of Delhi), Benito Juarez Road, Dhaula Kuan, New Delhi, India
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