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Yelamanda Rao K, Chandran R, Dileep KV, Gorantla SC, Jeelan Basha S, Mothukuru S, Siva Kumar I, Vamsi K, Kumar S, Reddy ABM, Subramanyam R, Damu AG. Quinazolinone-Hydrazine Cyanoacetamide Hybrids as Potent Multitarget-Directed Druggable Therapeutics against Alzheimer's Disease: Design, Synthesis, and Biochemical, In Silico, and Mechanistic Analyses. ACS Chem Neurosci 2024; 15:3401-3420. [PMID: 39235838 DOI: 10.1021/acschemneuro.4c00424] [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] [Indexed: 09/06/2024] Open
Abstract
The discovery of effective multitarget-directed ligands (MTDLs) against multifactorial Alzheimer's disease (AD) remnants has been focused in an incessant drug discovery pursuit. In this perception, the current study explores the rational design, synthesis, and evaluation of 26 quinazolinone-hydrazine cyanoacetamide hybrids 7(a-j), 8(a-j), and 9(a-f) as MTDLs against AD. These new compounds were synthesized in four-step processes using simple phthalimide as the starting material without any major workup procedures and were characterized by different spectroscopic techniques. In Ellman's assay, the most potent analogues 7i, 8j, and 9d were identified as selective and mixed-type inhibitors of hAChE. Furthermore, biophysical and computational assessments revealed that the analogues 7i, 8j, and 9d were bound to both the catalytic active site and peripheral anionic site of hAChE with high affinity. The molecular dynamics simulation analysis highlighted the conformational changes of hAChE upon binding of 7i, 8j, and 9d and also the stability of resulting biomolecular systems all over 100 ns simulations. In addition to antioxidant activity, the most active congeners were found to protect substantially SK-N-SH cells from oxidative damage. Decisively, the most active analogues 7i, 8j, and 9d were assessed as potent Aβ1-42 fibril modulators and protective agents against Aβ1-42-induced toxicity in SH-SY5Y cells. Additionally, glioblastoma C6 cell-based assays also demonstrated the use of the most active congeners 7i, 8j, and 9d as protective agents against Aβ1-42-induced toxicity. Overall, this multifunctional capacity of quinazolinone-hydrazine cyanoacetamide hybrids demonstrated the noteworthy potential of these hybrids to develop as effectual MTDLs against AD. However, further pharmacokinetics, toxicology, and behavioral studies are warranted.
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Affiliation(s)
- Kandrakonda Yelamanda Rao
- Bioorganic Chemistry Research Laboratory, Department of Chemistry, Yogi Vemana University, Kadapa, Andhra Pradesh 516005, India
| | - Remya Chandran
- Laboratory for Computational and Structural Biology, Jubilee Centre for Medical Research, Jubilee Mission Medical College and Research Institute, Thrissur, Kerala 680005, India
| | - K V Dileep
- Laboratory for Computational and Structural Biology, Jubilee Centre for Medical Research, Jubilee Mission Medical College and Research Institute, Thrissur, Kerala 680005, India
| | - Sri Charitha Gorantla
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Shaik Jeelan Basha
- Bioorganic Chemistry Research Laboratory, Department of Chemistry, Yogi Vemana University, Kadapa, Andhra Pradesh 516005, India
- Department of Chemistry, Santhiram Engineering College (Autonomous), Nandyal, Andhra Pradesh 518501, India
| | - Sreelakshmi Mothukuru
- Bioorganic Chemistry Research Laboratory, Department of Chemistry, Yogi Vemana University, Kadapa, Andhra Pradesh 516005, India
| | - Irla Siva Kumar
- Soft Condensed Matter, Raman Research Institute, CV Raman Avenue, Sadashiva Nagar, Bangalore 560080, India
| | - Katta Vamsi
- Department of Chemistry, Indian Institute of Science and Education Research (IISER), Tirupati, Andhra Pradesh 517507, India
| | - Sandeep Kumar
- Soft Condensed Matter, Raman Research Institute, CV Raman Avenue, Sadashiva Nagar, Bangalore 560080, India
- Nitte Meenakshi Institute of Technology, Yelahanka, Bangalore 560064, India
| | - Aramati Bindu Madhava Reddy
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Rajagopal Subramanyam
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Amooru Gangaiah Damu
- Bioorganic Chemistry Research Laboratory, Department of Chemistry, Yogi Vemana University, Kadapa, Andhra Pradesh 516005, India
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Varma M, Ugale V, Shaukat J, Hollmann M, Shete P, Shravage B, Tayade S, Kumbhar A, Butcher R, Jani V, Sonavane U, Joshi R, Lokwani D, Kulkarni P. Novel alkyl-substituted 4-methoxy benzaldehyde thiosemicarbazones: Multi-target directed ligands for the treatment of Alzheimer's disease. Eur J Pharmacol 2023; 957:176028. [PMID: 37657740 DOI: 10.1016/j.ejphar.2023.176028] [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: 01/28/2023] [Revised: 08/14/2023] [Accepted: 08/25/2023] [Indexed: 09/03/2023]
Abstract
Alzheimer's disease (AD) is a devastating neurodegenerative disorder affecting mental ability and interrupts neurocognitive functions. Treating multifactorial conditions of AD with a single-target-directed drug is highly difficult. Thus, a multi-target-directed ligand (MTDL) development strategy has been developed as a promising approach for the treatment of AD. Herein, we have synthesized two novel thiosemicarbazones as MTDLs and reported their bioactivities against diverse neuropathological events involved in AD. In vitro studies revealed that both compounds exhibited promising anticholinesterase activity (AChE, IC50 = 15.98 μM, MZET and IC50 = 30.23 μM, MZMT), well supported by a detailed computational study. Both analogs have shown good thermodynamic behaviour and stability through interactions with characteristic amino acid residues throughout simulation of 100 ns against acetylcholinesterase enzyme. In an electrophysiology assay, these analogs have shown a characteristic inhibitory response against the GluN1-1a + GluN2B subunit of N-methyl-D-aspartate receptors. Pre-treatment of BV-2 microglial cells with MZET effectively decreased nitrite production compared to nitrite produced by lipopolysaccharide-treated cells alone. Further, the effect of MZMT and MZET on autophagy regulation was determined using stably transfected SH-SY5Y neuroblastoma cells. MZET significantly enhanced the autophagy flux in neuroblastoma cells. A significant decrease in copper-catalysed oxidation of amyloid-β in presence of synthesized thiosemicarbazones was also observed. Collectively, our findings indicated that these analogs have potential as effective anti-AD candidates and can be used as a prototype to develop more safer multi-targeted anti-AD drugs.
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Affiliation(s)
- Mokshada Varma
- Bioprospecting Group, Agharkar Research Institute, Savitribai Phule Pune University, G. G. Agharkar Road, Pune, Maharashtra, 411004, India
| | - Vinod Ugale
- Bioprospecting Group, Agharkar Research Institute, Savitribai Phule Pune University, G. G. Agharkar Road, Pune, Maharashtra, 411004, India; Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany; Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, 425405, India.
| | - Javeria Shaukat
- Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Michael Hollmann
- Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, Bochum, Germany
| | - Padmaja Shete
- Bioprospecting Group, Agharkar Research Institute, Savitribai Phule Pune University, G. G. Agharkar Road, Pune, Maharashtra, 411004, India
| | - Bhupendra Shravage
- Developmental Biology Group, Agharkar Research Institute, Savitribai Phule Pune University, Pune, Maharashtra, 411004, India
| | - Sakharam Tayade
- Department of Chemistry, Savitribai Phule Pune University, Pune, Maharashtra, 411007, India
| | - Avinash Kumbhar
- Department of Chemistry, Savitribai Phule Pune University, Pune, Maharashtra, 411007, India
| | - Ray Butcher
- Department of Chemistry, Howard University, Washington, DC, 20059, USA
| | - Vinod Jani
- HPC Medical & Bioinformatics Applications Group, Centre for Development of Advanced Computing (C-DAC), Savitribai Phule Pune University, Pune, Maharashtra, 411007, India
| | - Uddhavesh Sonavane
- HPC Medical & Bioinformatics Applications Group, Centre for Development of Advanced Computing (C-DAC), Savitribai Phule Pune University, Pune, Maharashtra, 411007, India
| | - Rajendra Joshi
- HPC Medical & Bioinformatics Applications Group, Centre for Development of Advanced Computing (C-DAC), Savitribai Phule Pune University, Pune, Maharashtra, 411007, India
| | - Deepak Lokwani
- Rajashri Shahu College of Pharmacy, Buldana, Maharashtra, India
| | - Prasad Kulkarni
- Bioprospecting Group, Agharkar Research Institute, Savitribai Phule Pune University, G. G. Agharkar Road, Pune, Maharashtra, 411004, India.
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Nguyen HD. In silico identification of novel heterocyclic compounds combats Alzheimer's disease through inhibition of butyrylcholinesterase enzymatic activity. J Biomol Struct Dyn 2023:1-21. [PMID: 37723904 DOI: 10.1080/07391102.2023.2259482] [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: 03/31/2023] [Accepted: 09/09/2023] [Indexed: 09/20/2023]
Abstract
Increasing evidence indicates that heterocyclic molecules possess properties against butyrylcholinesterase (BChE) enzymatic activity, which is a potential therapeutic target for Alzheimer's disease (AD). Thus, this study aimed to further evaluate the relationship between heterocyclic molecules and their biological activities. A dataset of 38 selective and potent heterocyclic compounds (-log[the half‑maximal inhibitory concentration (pIC50)]) values ranging from 8.02 to 10.05) was applied to construct a quantitative structure-activity relationship (QSAR) study, including Bayesian model average (BMA), artificial neural network (ANN), multiple nonlinear regression (MNLR), and multiple linear regression (MLR) models. Four models met statistical acceptance in internal and external validation. The ANN model was superior to other models in predicting the pIC50 of the outcome. The descriptors put into the models were found to be comparable with the target-ligand complex X-ray structures, making these models interpretable. Three selected molecules possess drug-like properties (pIC50 values ranged from 9.19 to 9.54). The docking score between candidates and the BChE receptor (RCSB ID 6EYF) ranged from -8.4 to -9.0 kcal/mol. Remarkably, the pharmacokinetics, biological activities, molecular dynamics, and physicochemical properties of compound 18 (C20H22N4O, pIC50 value = 9.33, oxadiazole derivative group) support its protective effects on AD treatment due to its non-toxic nature, non-carcinogen, cholinergic nature, capability to penetrate the blood-brain barrier, and high gastrointestinal absorption.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Hai Duc Nguyen
- Department of Pharmacy, College of Pharmacy, Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon, South Korea
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Nguyen HD, Kim MS. Identification of promising inhibitory heterocyclic compounds against acetylcholinesterase using QSAR, ADMET, biological activity, and molecular docking. Comput Biol Chem 2023; 104:107872. [PMID: 37119698 DOI: 10.1016/j.compbiolchem.2023.107872] [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: 03/24/2023] [Revised: 04/14/2023] [Accepted: 04/16/2023] [Indexed: 05/01/2023]
Abstract
Heterocyclic compounds exert diverse functions, especially acetylcholinesterase (AChE) inhibition. Thus, identifying the association between their detailed structures and biological activities is important to the development of novel medications for Alzheimer's disease (AD) treatment. In this study, diverse sets of 120 potent and selective heterocyclic compounds (-log[the half‑maximal inhibitory concentration] (pIC50) values ranged from 8.01 to 12.50) were used to develop quantitative structure-activity relationship (QSAR) models using multiple linear regression (MLR), multiple nonlinear regression (MNLR), Bayesian model average (BMA), and artificial neural network (ANN) models. The models' robustness and stability have been assessed using both internal and external methodology. ANN outperforms MLR, MNLR, and BMA according to external validation. The molecular descriptors incorporated into the model were in satisfactory correlation with the AChE receptor-ligand complex X-ray structures, making the model interpretable and predictive. Three selected compounds exert drug-like characteristics (pIC50 values ranged from 11.01 to 11.17). The binding affinity between the optimal compounds and the AChE receptor (RCSB ID 3LII) ranged from - 7.4 to - 8.8 kcal/mol. Remarkably, the pharmacokinetics, physicochemical properties, and biological activities of compound 25 (C23H32N2O2, PubChem CID 118727071, pIC50 value = 11.17) were found to be consistent with its therapeutic effects in AD due to its cholinergic and non-toxic nature, non-P-glycoprotein, high gastrointestinal absorption, and capability to penetrate the blood-brain barrier.
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Affiliation(s)
- Hai Duc Nguyen
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea.
| | - Min-Sun Kim
- Department of Pharmacy, College of Pharmacy and Research Institute of Life and Pharmaceutical Sciences, Sunchon National University, Suncheon 57922, Republic of Korea.
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Gamma irradiation mediated production improvement of some myco-fabricated nanoparticles and exploring their wound healing, anti-inflammatory and acetylcholinesterase inhibitory potentials. Sci Rep 2023; 13:1629. [PMID: 36717680 PMCID: PMC9887004 DOI: 10.1038/s41598-023-28670-5] [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: 10/01/2022] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
In the current scenario, scaling up the microbial production of nanoparticles with diverse biological applications is an emerging prospect for NPs' sustainable industry. Thus, this paper was conducted to develop a suitable applicative process for the myco-fabrication of cobalt-ferrite (CoFeNPs), selenium (SeNPs), and zinc oxide (ZnONPs) nanoparticles. A strain improvement program using gamma irradiation mutagenesis was applied to improve the NPs-producing ability of the fungal strains. The achieved yields of CoFeNPs, SeNPs, and ZnONPs were intensified by a 14.47, 7.85, and 22.25-fold increase from the initial yield following gamma irradiation and isolation of stable mutant strains. The myco-fabricated CoFeNPs, SeNPs, and ZnONPs were then exploited to study their wound healing, and anti-inflammatory. In addition, the acetylcholinesterase inhibition activities of the myco-fabricated NPs were evaluated and analyzed by molecular docking. The obtained results confirmed the promising wound healing, anti-inflammatory, and acetylcholinesterase inhibition potentials of the three types of NPs. Additionally, data from analyzing the interaction of NPs with acetylcholinesterase enzyme by molecular docking were in conformation with the experimental data.
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Guo ZH, Khattak S, Rauf MA, Ansari MA, Alomary MN, Razak S, Yang CY, Wu DD, Ji XY. Role of Nanomedicine-Based Therapeutics in the Treatment of CNS Disorders. Molecules 2023; 28:1283. [PMID: 36770950 PMCID: PMC9921752 DOI: 10.3390/molecules28031283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/13/2022] [Accepted: 12/20/2022] [Indexed: 01/31/2023] Open
Abstract
Central nervous system disorders, especially neurodegenerative diseases, are a public health priority and demand a strong scientific response. Various therapy procedures have been used in the past, but their therapeutic value has been insufficient. The blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier is two of the barriers that protect the central nervous system (CNS), but are the main barriers to medicine delivery into the CNS for treating CNS disorders, such as brain tumors, Parkinson's disease, Alzheimer's disease, and Huntington's disease. Nanotechnology-based medicinal approaches deliver valuable cargos targeting molecular and cellular processes with greater safety, efficacy, and specificity than traditional approaches. CNS diseases include a wide range of brain ailments connected to short- and long-term disability. They affect millions of people worldwide and are anticipated to become more common in the coming years. Nanotechnology-based brain therapy could solve the BBB problem. This review analyzes nanomedicine's role in medication delivery; immunotherapy, chemotherapy, and gene therapy are combined with nanomedicines to treat CNS disorders. We also evaluated nanotechnology-based approaches for CNS disease amelioration, with the intention of stimulating the immune system by delivering medications across the BBB.
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Affiliation(s)
- Zi-Hua Guo
- Department of Neurology, Kaifeng Hospital of Traditional Chinese Medicine, No. 54 East Caizhengting St., Kaifeng 475000, China
| | - Saadullah Khattak
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng 475004, China
| | - Mohd Ahmar Rauf
- Department of Surgery, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
- Henan-Macquarie University Joint Centre for Biomedical Innovation, School of Life Sciences, Henan University, Kaifeng 475004, China
| | - Mohammad Azam Ansari
- Department of Epidemic Disease Research, Institute for Research & Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Mohammad N. Alomary
- National Centre for Biotechnology, King Abdulaziz City for Science and Technology (KACST), P.O. Box 6086, Riyadh 11442, Saudi Arabia
| | - Sufyan Razak
- Dow Medical College, John Hopkins Medical Center, School of Medicine, Baltimore, MD 21205, USA
| | - Chang-Yong Yang
- School of Nursing and Health, Henan University, Kaifeng 475004, China
| | - Dong-Dong Wu
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng 475004, China
- School of Stomatology, Henan University, Kaifeng 475004, China
| | - Xin-Ying Ji
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng 475004, China
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Driver R, Mishra S. Organ-On-A-Chip Technology: An In-depth Review of Recent Advancements and Future of Whole Body-on-chip. BIOCHIP JOURNAL 2022. [DOI: 10.1007/s13206-022-00087-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Obaid RJ, Mughal EU, Naeem N, Al-Rooqi MM, Sadiq A, Jassas RS, Moussa Z, Ahmed SA. Pharmacological significance of nitrogen-containing five and six-membered heterocyclic scaffolds as potent cholinesterase inhibitors for drug discovery. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Obaid RJ, Naeem N, Mughal EU, Al-Rooqi MM, Sadiq A, Jassas RS, Moussa Z, Ahmed SA. Inhibitory potential of nitrogen, oxygen and sulfur containing heterocyclic scaffolds against acetylcholinesterase and butyrylcholinesterase. RSC Adv 2022; 12:19764-19855. [PMID: 35919585 PMCID: PMC9275557 DOI: 10.1039/d2ra03081k] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/27/2022] [Indexed: 01/15/2023] Open
Abstract
Heterocycles are the key structures in organic chemistry owing to their immense applications in the biological, chemical, and pharmaceutical fields. Heterocyclic compounds perform various noteworthy functions in nature, medication, innovation etc. Most frequently, pure nitrogen heterocycles or various positional combinations of nitrogen, oxygen, and sulfur atoms in five or six-membered rings can be found. Inhibition of acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzymes is a popular strategy for the management of numerous mental diseases. In this context, cholinesterase inhibitors are utilized to relieve the symptoms of neurological illnesses like dementia and Alzheimer's disease (AD). The present review focuses on various heterocyclic scaffolds and their role in designing and developing new potential AChE and BChE inhibitors to treat AD. Moreover, a detailed structure-activity relationship (SAR) has been established for the future discovery of novel drugs for the treatment of AD. Most of the heterocyclic motifs have been used in the design of new potent cholinesterase inhibitors. In this regard, this review is an endeavor to summarize the biological and chemical studies over the past decade (2010-2022) describing the pursuit of new N, O and S containing heterocycles which can offer a rich supply of promising AChE and BChE inhibitory activities.
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Affiliation(s)
- Rami J Obaid
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University Makkah 21955 Saudi Arabia
| | - Nafeesa Naeem
- Department of Chemistry, University of Gujrat Gujrat-50700 Pakistan
| | | | - Munirah M Al-Rooqi
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University Makkah 21955 Saudi Arabia
| | - Amina Sadiq
- Department of Chemistry, Govt. College Women University Sialkot-51300 Pakistan
| | - Rabab S Jassas
- Department of Chemistry, Jamoum University College, Umm Al-Qura University 21955 Makkah Saudi Arabia
| | - Ziad Moussa
- Department of Chemistry, College of Science, United Arab Emirates University P.O. Box 15551 Al Ain Abu Dhabi United Arab Emirates
| | - Saleh A Ahmed
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University Makkah 21955 Saudi Arabia
- Department of Chemistry, Faculty of Science, Assiut University 71516 Assiut Egypt
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Design, Synthesis, and Evaluation of Novel 2 H-Benzo[b][1,4]thiazin-3(4 H)-one Derivatives as New Acetylcholinesterase Inhibitors. Molecules 2022; 27:molecules27072121. [PMID: 35408519 PMCID: PMC9000418 DOI: 10.3390/molecules27072121] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/17/2022] [Accepted: 03/22/2022] [Indexed: 11/24/2022] Open
Abstract
Alzheimer’s disease (AD) is a slowly progressive neurodegenerative disease that causes dementia in people aged 65 and over. In the present study, a series of thiadiazole hybrid compounds with benzothiazine derivatives as acetylcholinesterase inhibitors were developed and evaluated for their biological activity. The AChE and BChE inhibition potentials of all compounds were evaluated by using the in vitro Ellman method. The biological evaluation showed that compounds 3i and 3j displayed significant inhibitory activity against AChE. Compounds 3i and 3j showed IC50 values of 0.027 µM and 0.025 µM against AChE, respectively. The reference drug donepezil (IC50 = 0.021 µM) also showed significant inhibition against AChE. Further docking simulation also revealed that these compounds (3i and 3j) interacted with the active site of the enzyme similarly to donepezil. The antioxidant study revealed that compounds 3i and 3j exhibited greater antioxidant effects. An in vitro blood–brain barrier permeability study showed that compounds 3i and 3j are promising compounds against AD. The cytotoxicity study of compounds 3i and 3j showed non-cytotoxic with an IC50 value of 98.29 ± 3.98 µM and 159.68 ± 5.53 µM against NIH/3T3 cells, respectively.
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Lai Shi Min S, Liew SY, Chear NJY, Goh BH, Tan WN, Khaw KY. Plant Terpenoids as the Promising Source of Cholinesterase Inhibitors for Anti-AD Therapy. BIOLOGY 2022; 11:biology11020307. [PMID: 35205173 PMCID: PMC8869317 DOI: 10.3390/biology11020307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/25/2022] [Accepted: 02/10/2022] [Indexed: 11/25/2022]
Abstract
Simple Summary Plant-derived terpenes have been a research interest in the recent years, as they are believed to possess the ability to function as a cholinesterase inhibitor. As the deficit of cholinergic activity is one of the factors that causes cognitive impairment in Alzheimer’s disease patients, it serves as a great therapeutic target. It has been found that various terpenoids, such as diterpenoids, triterpenoids and sesquiterpenoids, do have the ability to inhibit cholinesterase activity, and their chemical structures do play a role in this. As terpenoids possess anti-cholinesterase properties, it is encouraged to have future research on drug discovery and development in treating Alzheimer’s disease. Abstract Plant-derived terpenes are the prolific source of modern drugs such as taxol, chloroquine and artemisinin, which are widely used to treat cancer and malaria infections. There are research interests in recent years on terpene-derived metabolites (diterpenes, triterpenes and sesquiterpenes), which are believed to serve as excellent cholinesterase inhibitors. As cholinesterase inhibitors are the current treatment for Alzheimer’s disease, terpene-derived metabolites will have the potential to be involved in the future drug development for Alzheimer’s disease. Hence, a bibliographic search was conducted by using the keywords “terpene”, “cholinesterase” and “Alzheimer’s disease”, along with cross-referencing from 2011 to 2020, to provide an overview of natural terpenes with potential anticholinesterase properties. This review focuses on the extraction, chemical structures and anti-cholinesterase mechanisms of terpenes, which support and encourage future research on drug discovery and development in treating Alzheimer’s disease.
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Affiliation(s)
- Shereen Lai Shi Min
- School of Pharmacy, Monash University Malaysia, Bandar Sunway 47500, Malaysia;
| | - Sook Yee Liew
- Chemistry Division, Centre for Foundation Studies in Science, University of Malaya, Kuala Lumpur 50603, Malaysia;
- Centre for Natural Products Research and Drug Discovery (CENAR), University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Nelson Jeng Yeou Chear
- Centre for Drug Research, Universiti Sains Malaysia, Minden, Penang 11800, Malaysia;
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA
| | - Bey Hing Goh
- Biofunctional Molecule Exploratory (BMEX) Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Subang Jaya 47500, Malaysia;
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Wen-Nee Tan
- Chemistry Section, School of Distance Education, Universiti Sains Malaysia, Penang 11800, Malaysia
- Correspondence: (W.-N.T.); (K.Y.K.)
| | - Kooi Yeong Khaw
- School of Pharmacy, Monash University Malaysia, Bandar Sunway 47500, Malaysia;
- Correspondence: (W.-N.T.); (K.Y.K.)
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Diagnosis and classification of Alzheimer's disease by using a convolution neural network algorithm. Soft comput 2022. [DOI: 10.1007/s00500-022-06762-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Boy S, Aras A, Türkan F, Akyıldırım O, Beytur M, Sedef Karaman H, Manap S, Yüksek H. Synthesis, Spectroscopic Analysis, and in Vitro/in Silico Biological Studies of Novel Piperidine Derivatives Heterocyclic Schiff-Mannich Base Compounds. Chem Biodivers 2021; 18:e2100433. [PMID: 34596972 DOI: 10.1002/cbdv.202100433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 10/01/2021] [Indexed: 01/20/2023]
Abstract
In the present study, 3-substitued-4-(4-hydroxybenzylidenamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones (S1-8) were synthesized by treating 4-hydroxybenzaldehyde (B) with eight different 3-substitued-4-amino-4,5-dihydro-1H-1,2,4-triazole-5-ones (T1-8) in acetic acid medium, separately. The synthesized Schiff bases (S) were reacted with formaldehyde and secondary amine such as 4-piperidinecarboxyamide to afford novel heterocyclic bases. 3-Substitued-4-(4-hydroxybenzylidenamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones (T) were treated with 4-piperidinecarboxyamide in the presence of formaldehyde to synthesize eight new 1-(4-piperidinecarboxyamide-1-yl-methyl)-3-substitued-4-(4-hydroxybenzylidenamino)-4,5-dihydro-1H-1,2,4-triazol-5-ones (M1-8). The structure characterization of compounds was carried out using 1 H-NMR, IR, HR-MS, and 13 C-NMR spectroscopic methods. The inhibitory properties of the newly synthesized compounds were calculated against the acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and glutathione S-transferase (GST) enzymes. Ki values were calculated in the range of 20.06±3.11-36.86±6.17 μM for GST, 17.87±2.91-30.53±4.25 μM for AChE, 9.08±0.69-20.02±2.88 μM for BChE, respectively, Besides, IC50 values were also calculated. Best binding scores of -inhibitors against used enzymes were calculated as -12.095 kcal/mol, -12.775 kcal/mol, and -9.336 kcal/mol, respectively. While 5-oxo-triazole piperidine-4-carboxamide moieties have a critical role in the inhibition of AChE and GST enzymes, hydroxy benzyl moiety is important for BChE enzyme inhibition.
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Affiliation(s)
- Songül Boy
- Atatürk Vocational College of Health Service, Kafkas University, Kars, 36100, Turkey
| | - Abdülmelik Aras
- Department of Biochemistry, Faculty of Science and Arts, Iğdır University, Iğdır, 76100, Turkey
| | - Fikret Türkan
- Health Services Vocational School, Iğdır University, Iğdır, 76000, Turkey
| | - Onur Akyıldırım
- Department of Chemical Engineering, Faculty of Engineering and Architecture, Kafkas University, Kars, 36100, Turkey
| | - Murat Beytur
- Department of Chemistry, Faculty of Science and Letters, Kafkas University, Kars, 36100, Turkey
| | - Halide Sedef Karaman
- Department of Chemistry, Faculty of Science, Ataturk University, Erzurum, 25240, Turkey
| | - Sevda Manap
- Department of Chemistry, Faculty of Science and Letters, Kafkas University, Kars, 36100, Turkey
| | - Haydar Yüksek
- Department of Chemistry, Faculty of Science and Letters, Kafkas University, Kars, 36100, Turkey
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Szu JI, Obenaus A. Cerebrovascular phenotypes in mouse models of Alzheimer's disease. J Cereb Blood Flow Metab 2021; 41:1821-1841. [PMID: 33557692 PMCID: PMC8327123 DOI: 10.1177/0271678x21992462] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/16/2020] [Accepted: 01/06/2021] [Indexed: 12/12/2022]
Abstract
Alzheimer's disease (AD) is a devastating neurological degenerative disorder and is the most common cause of dementia in the elderly. Clinically, AD manifests with memory and cognitive decline associated with deposition of hallmark amyloid beta (Aβ) plaques and neurofibrillary tangles (NFTs). Although the mechanisms underlying AD remains unclear, two hypotheses have been proposed. The established amyloid hypothesis states that Aβ accumulation is the basis of AD and leads to formation of NFTs. In contrast, the two-hit vascular hypothesis suggests that early vascular damage leads to increased accumulation of Aβ deposits in the brain. Multiple studies have reported significant morphological changes of the cerebrovasculature which can result in severe functional deficits. In this review, we delve into known structural and functional vascular alterations in various mouse models of AD and the cellular and molecular constituents that influence these changes to further disease progression. Many studies shed light on the direct impact of Aβ on the cerebrovasculature and how it is disrupted during the progression of AD. However, more research directed towards an improved understanding of how the cerebrovasculature is modified over the time course of AD is needed prior to developing future interventional strategies.
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Affiliation(s)
- Jenny I Szu
- Institute for Memory Impairments and Neurological Disorders, University of California Irvine, Irvine, CA, USA
| | - André Obenaus
- Department of Pediatrics, University of California Irvine, Irvine, CA, USA
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15
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Varma M, Shravage B, Tayade S, Kumbhar A, Butcher R, Jani V, Sonavane U, Joshi R, Kulkarni PP. A simple methyl substitution of 3-acetylcoumarin thiosemicarbazone enhances cellular autophagy flux, reduces inflammation and ameliorates rough eye phenotype in the Drosophila model of Alzheimer's disease. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Song M, Jung H, Lee S, Kim D, Ahn M. Diagnostic Classification and Biomarker Identification of Alzheimer's Disease with Random Forest Algorithm. Brain Sci 2021; 11:453. [PMID: 33918453 PMCID: PMC8065661 DOI: 10.3390/brainsci11040453] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 11/29/2022] Open
Abstract
Random Forest (RF) is a bagging ensemble model and has many important advantages, such as robustness to noise, an effective structure for complex multimodal data and parallel computing, and also provides important features that help investigate biomarkers. Despite these benefits, RF is not used actively to predict Alzheimer's disease (AD) with brain MRIs. Recent studies have reported RF's effectiveness in predicting AD, but the test sample sizes were too small to draw any solid conclusions. Thus, it is timely to compare RF with other learning model methods, including deep learning, particularly with large amounts of data. In this study, we tested RF and various machine learning models with regional volumes from 2250 brain MRIs: 687 normal controls (NC), 1094 mild cognitive impairment (MCI), and 469 AD that ADNI (Alzheimer's Disease Neuroimaging Initiative database) provided. Three types of features sets (63, 29, and 22 features) were selected, and classification accuracies were computed with RF, Support vector machine (SVM), Multi-layer perceptron (MLP), and Convolutional neural network (CNN). As a result, RF, MLP, and CNN showed high performances of 90.2%, 89.6%, and 90.5% with 63 features. Interestingly, when 22 features were used, RF showed the smallest decrease in accuracy, -3.8%, and the standard deviation did not change significantly, while MLP and CNN yielded decreases in accuracy of -6.8% and -4.5% with changes in the standard deviation from 3.3% to 4.0% for MLP and 2.1% to 7.0% for CNN, indicating that RF predicts AD more reliably with fewer features. In addition, we investigated the importance of the features that RF provides, and identified the hippocampus, amygdala, and inferior lateral ventricle as the major contributors in classifying NC, MCI, and AD. On average, AD showed smaller hippocampus and amygdala volumes and a larger volume of inferior lateral ventricle than those of MCI and NC.
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Affiliation(s)
- Minseok Song
- School of Computer Science and Electrical Engineering, Handong Global University, Pohang-si 37554, Korea; (M.S.); (H.J.); (S.L.)
| | - Hyeyoom Jung
- School of Computer Science and Electrical Engineering, Handong Global University, Pohang-si 37554, Korea; (M.S.); (H.J.); (S.L.)
| | - Seungyong Lee
- School of Computer Science and Electrical Engineering, Handong Global University, Pohang-si 37554, Korea; (M.S.); (H.J.); (S.L.)
| | | | - Minkyu Ahn
- School of Computer Science and Electrical Engineering, Handong Global University, Pohang-si 37554, Korea; (M.S.); (H.J.); (S.L.)
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Khaw KY, Chong CW, Murugaiyah V. LC-QTOF-MS analysis of xanthone content in different parts of Garcinia mangostana and its influence on cholinesterase inhibition. J Enzyme Inhib Med Chem 2021; 35:1433-1441. [PMID: 32608273 PMCID: PMC7717613 DOI: 10.1080/14756366.2020.1786819] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Mangosteen is one of the best tasting tropical fruit widely cultivated in Southeast Asia. This study aimed to quantify xanthone content in different parts of Garcinia mangostana by LC-QTOF-MS and determine its influence on their cholinesterase inhibitory activities. The total xanthone content in G. mangostana was in the following order: pericarp > calyx > bark > stalk > stem > leaves > aril. The total xanthone content of pericarp was 100 times higher than the aril. Methanol extracts of the pericarp and calyx demonstrated the most potent inhibitory activities against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) with IC50 values of 0.90 and 0.37 µg/mL, respectively. Statistical analysis showed a strong correlation between xanthone content and cholinesterase inhibition. Nonmetric multidimensional scaling analysis revealed α-mangostin and γ-mangostin of pericarp as the key metabolites contributing to cholinesterase inhibition. Due to the increasing demand of mangosteen products, repurposing of fruit waste (pericarp) has great potential for enhancement of the cognitive health of human beings.
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Affiliation(s)
- Kooi Yeong Khaw
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya, Selangor, Malaysia
| | - Chun Wie Chong
- School of Pharmacy, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Subang Jaya, Selangor, Malaysia
| | - Vikneswaran Murugaiyah
- Discipline of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, Penang, Malaysia
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Ghosh S, Jana K, Wakchaure PD, Ganguly B. Revealing the cholinergic inhibition mechanism of Alzheimer's by galantamine: a metadynamics simulation study. J Biomol Struct Dyn 2020; 40:5100-5111. [PMID: 33382027 DOI: 10.1080/07391102.2020.1867644] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Galantamine is one of the approved drugs based on the cholinergic hypothesis for the symptomatic treatment of mild to moderate Alzheimer's disease (AD). The etiology of AD is not fully known; however, the reported cholinergic hypothesis suggests the inadequate synthesis of the neurotransmitter acetylcholine (ACh) is responsible for this disease. The crystal structure of galantamine bound human acetylcholinesterase (hAChE) has been reported; however, the inhibition mechanism of hAChE by galantamine is not well understood. A Well-tempered metadynamics (WTMtD) simulation study has been performed with the crystal structure of galantamine bound hAChE. The reported mechanism for the degradation of ACh is suggested through a proton transfer process from a carboxylic group of Glu334 to the hydroxyl group of Ser203, which attacks ACh for the degradation to acetic acid and choline. Such proton transfer process is lowered in the presence of galantamine due to the separation of catalytic triad inside the gorge of AChE as observed with WTMtD. A docking study has been performed to examine the ACh's binding with the catalytic triad of galantamine bound hAChE. The docking results reveal that the approach of ACh to the catalytic triad is interrupted due to the galantamine's presence in the gorge of the enzyme.
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Affiliation(s)
- Shibaji Ghosh
- Computation and Simulation Unit (Analytical and Environmental Science Division and Centralized Instrument Facility), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Kalyanashis Jana
- Computation and Simulation Unit (Analytical and Environmental Science Division and Centralized Instrument Facility), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Padmaja D Wakchaure
- Computation and Simulation Unit (Analytical and Environmental Science Division and Centralized Instrument Facility), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Bishwajit Ganguly
- Computation and Simulation Unit (Analytical and Environmental Science Division and Centralized Instrument Facility), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
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Zondagh LS, Malan SF, Joubert J. Design, synthesis and biological evaluation of edaravone derivatives bearing the N-benzyl pyridinium moiety as multifunctional anti-Alzheimer's agents. J Enzyme Inhib Med Chem 2020; 35:1596-1605. [PMID: 32779503 PMCID: PMC7470113 DOI: 10.1080/14756366.2020.1801673] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/15/2020] [Accepted: 07/18/2020] [Indexed: 12/31/2022] Open
Abstract
A series of multi-target directed edaravone derivatives bearing N-benzyl pyridinium moieties were designed and synthesised. Edaravone is a potent antioxidant with significant neuroprotective effects and N-benzyl pyridinium has previously exhibited positive results as part of a dual-site binding, peripheral anionic site (PAS) and catalytic anionic site (CAS), acetylcholinesterase (AChE) inhibitor. The designed edaravone-N-benzyl pyridinium hybrid compounds were docked within the AChE active site. The results indicated interactions with conserved amino acids (Trp279 in PAS and Trp84 in CAS), suggesting good dual-site inhibitory activity. Significant in vitro AChE inhibitory activities were observed for selected compounds (IC50: 1.2-4.6 µM) with limited butyrylcholinesterase inhibitory activity (IC50's >160 µM), indicating excellent selectivity towards AChE (SI: 46 - >278). The compounds also showed considerable antioxidant ability, similar to edaravone. In silico studies indicated that these compounds should cross the blood-brain barrier, making them promising lead molecules in the development of anti-Alzheimer's agents.
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Affiliation(s)
- Luke S. Zondagh
- Pharmaceutical Chemistry, School of Pharmacy, University of the Western Cape, Bellville, South Africa
| | - Sarel F. Malan
- Pharmaceutical Chemistry, School of Pharmacy, University of the Western Cape, Bellville, South Africa
| | - Jacques Joubert
- Pharmaceutical Chemistry, School of Pharmacy, University of the Western Cape, Bellville, South Africa
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20
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Ka S, Koirala M, Mérindol N, Desgagné-Penix I. Biosynthesis and Biological Activities of Newly Discovered Amaryllidaceae Alkaloids. Molecules 2020; 25:E4901. [PMID: 33113950 PMCID: PMC7660210 DOI: 10.3390/molecules25214901] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/07/2020] [Accepted: 10/21/2020] [Indexed: 12/23/2022] Open
Abstract
Alkaloids are an important group of specialized nitrogen metabolites with a wide range of biochemical and pharmacological effects. Since the first publication on lycorine in 1877, more than 650 alkaloids have been extracted from Amaryllidaceae bulbous plants and clustered together as the Amaryllidaceae alkaloids (AAs) family. AAs are specifically remarkable for their diverse pharmaceutical properties, as exemplified by the success of galantamine used to treat the symptoms of Alzheimer's disease. This review addresses the isolation, biological, and structure activity of AAs discovered from January 2015 to August 2020, supporting their therapeutic interest.
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Affiliation(s)
- Seydou Ka
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351, boul. des Forges, C.P. 500, Trois-Rivières, QC G9A 5H7, Canada; (S.K.); (M.K.); (N.M.)
| | - Manoj Koirala
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351, boul. des Forges, C.P. 500, Trois-Rivières, QC G9A 5H7, Canada; (S.K.); (M.K.); (N.M.)
| | - Natacha Mérindol
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351, boul. des Forges, C.P. 500, Trois-Rivières, QC G9A 5H7, Canada; (S.K.); (M.K.); (N.M.)
| | - Isabel Desgagné-Penix
- Department of Chemistry, Biochemistry and Physics, Université du Québec à Trois-Rivières, 3351, boul. des Forges, C.P. 500, Trois-Rivières, QC G9A 5H7, Canada; (S.K.); (M.K.); (N.M.)
- Groupe de Recherche en Biologie Végétale, Université du Québec à Trois-Rivières, 3351, boul. des Forges, C.P. 500, Trois-Rivières, QC G9A 5H7, Canada
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21
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Sağlık BN, Osmaniye D, Acar Çevik U, Levent S, Kaya Çavuşoğlu B, Özkay Y, Kaplancıklı ZA. Design, Synthesis, and Structure-Activity Relationships of Thiazole Analogs as Anticholinesterase Agents for Alzheimer's Disease. Molecules 2020; 25:E4312. [PMID: 32962239 PMCID: PMC7570694 DOI: 10.3390/molecules25184312] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/10/2020] [Accepted: 09/18/2020] [Indexed: 12/20/2022] Open
Abstract
Dementia is a neurological condition commonly correlated with Alzheimer's disease (AD), and it is seen with many other central nervous system (CNS) disorders. The restricted number of medications is not appropriate to offer enough relief to enhance the quality of life of patients suffering from this symptom; thus, all therapeutic choices should be carefully assessed. In this study, new thiazolylhydrazone derivatives (2a-2l) were designed and synthesized based on the cholinergic hypothesis. Their chemical structures were confirmed by 1H NMR, 13C NMR, and HRMS spectrometric techniques. The ADME (absorption, distribution, metabolism, elimination) parameters of the synthesized compounds were predicted by using QikProp 4.8 software. It was concluded that all compounds presented satisfactory drug-like characteristics. Furthermore, their inhibitory activities against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) in vitro were also tested by modified the Ellman spectrophotometric method. According to the results, all compounds showed a weak inhibitory effect on BChE. On the other hand, most of the compounds (2a, 2b, 2d, 2e, 2g, 2i, and 2j) had a certain AChE inhibitory activity, and the IC50 values of them were calculated as 0.063 ± 0.003, 0.056 ± 0.002, 0.147 ± 0.006, 0.040 ± 0.001, 0.031 ± 0.001, 0.028 ± 0.001, and 0.138 ± 0.005 µM, respectively. Among these derivatives, compound 2i was found to be the most active agent in the series with an IC50 value of 0.028 ± 0.001 µM, which indicated an inhibition profile at a similar rate as the reference drug, donepezil. The potential binding modes of compounds 2a, 2b, 2e, 2g, and 2i with AChE were investigated and compared with each other by the molecular docking studies. The results showed that these compounds were strongly bound up with the AChE enzyme active site with the optimal conformations.
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Affiliation(s)
- Begüm Nurpelin Sağlık
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; (B.N.S.); (D.O.); (U.A.Ç.); (S.L.); (Y.Ö.)
- Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey
| | - Derya Osmaniye
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; (B.N.S.); (D.O.); (U.A.Ç.); (S.L.); (Y.Ö.)
- Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey
| | - Ulviye Acar Çevik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; (B.N.S.); (D.O.); (U.A.Ç.); (S.L.); (Y.Ö.)
- Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey
| | - Serkan Levent
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; (B.N.S.); (D.O.); (U.A.Ç.); (S.L.); (Y.Ö.)
- Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey
| | - Betül Kaya Çavuşoğlu
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Zonguldak Bülent Ecevit University, 67600 Zonguldak, Turkey;
| | - Yusuf Özkay
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; (B.N.S.); (D.O.); (U.A.Ç.); (S.L.); (Y.Ö.)
- Doping and Narcotic Compounds Analysis Laboratory, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey
| | - Zafer Asım Kaplancıklı
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Anadolu University, 26470 Eskişehir, Turkey; (B.N.S.); (D.O.); (U.A.Ç.); (S.L.); (Y.Ö.)
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Ka S, Masi M, Merindol N, Di Lecce R, Plourde MB, Seck M, Górecki M, Pescitelli G, Desgagne-Penix I, Evidente A. Gigantelline, gigantellinine and gigancrinine, cherylline- and crinine-type alkaloids isolated from Crinum jagus with anti-acetylcholinesterase activity. PHYTOCHEMISTRY 2020; 175:112390. [PMID: 32335411 DOI: 10.1016/j.phytochem.2020.112390] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 04/11/2020] [Accepted: 04/12/2020] [Indexed: 06/11/2023]
Abstract
Three undescribed Amarylidaceae alkaloids, named gigantelline, gigantellinine and gigancrinine, were isolated from Crinum jagus (syn. = Crinum giganteum) collected in Senegal, together with the already known sanguinine, cherylline, lycorine, crinine, flexinine and the isoquinolinone derivative hippadine. Gigantelline, gigantellinine and gigancrinine were characterized as 4-(6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydro-isoquinolin-4-yl)-phenol, its 7-O-demethyl-5ꞌ-hydroxy-4ꞌ-methoxy derivative and 5,6a,7,7a,8a,9-hexahydro-6,9a-ethano[1,3]dioxolo[4,5-j]oxireno[2,3-b]phenanthridin-9-ol, respectively, by using spectroscopic (1D and 2D 1H and 13C NMR and HRESIMS) and chemical methods. Their relative configuration was assigned by NOESY NMR spectra and NMR calculations, while the absolute configuration was assigned using electronic circular dichroism (ECD) experiments and calculations. Sanguinine, cherylline, crinine, flexinine, and the isoquinolinone hippadine, were isolated for the first time from C. jagus. Cherylline, gigantellinine, crinine, flexinine and sanguinine inhibited the activity of AChE in a dose-dependent manner, and inhibition by sanguinine was remarkably effective (IC50 = 1.83 ± 0.01 μM). Cherylline and hippadine showed weak cytotoxicity at 100 μM.
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Affiliation(s)
- Seydou Ka
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, 3351, Boul. des Forges, C.P. 500, Trois-Rivières, Québec, G8Z 4M3, Canada; Laboratoire de Chimie Organique et Chimie Thérapeutique, Faculté de Médecine, de Pharmacie et d'Odontologie de Dakar, Dakar, Sénégal
| | - Marco Masi
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Natacha Merindol
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, 3351, Boul. des Forges, C.P. 500, Trois-Rivières, Québec, G8Z 4M3, Canada
| | - Roberta Di Lecce
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Mélodie B Plourde
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, 3351, Boul. des Forges, C.P. 500, Trois-Rivières, Québec, G8Z 4M3, Canada
| | - Matar Seck
- Laboratoire de Chimie Organique et Chimie Thérapeutique, Faculté de Médecine, de Pharmacie et d'Odontologie de Dakar, Dakar, Sénégal
| | - Marcin Górecki
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, 13, 56124, Pisa, Italy; Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, Warsaw, 01-224, Poland
| | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Giuseppe Moruzzi, 13, 56124, Pisa, Italy
| | - Isabel Desgagne-Penix
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, 3351, Boul. des Forges, C.P. 500, Trois-Rivières, Québec, G8Z 4M3, Canada.
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Universita' di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126 Napoli, Italy.
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Inhibitory activity on cholinesterases produced by aryl-phthalimide derivatives: green synthesis, in silico and in vitro evaluation. Med Chem Res 2020. [DOI: 10.1007/s00044-020-02543-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Pharmacological Mechanisms Underlying the Neuroprotective Effects of Alpinia oxyphylla Miq. on Alzheimer's Disease. Int J Mol Sci 2020; 21:ijms21062071. [PMID: 32197305 PMCID: PMC7139528 DOI: 10.3390/ijms21062071] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 03/12/2020] [Accepted: 03/15/2020] [Indexed: 12/13/2022] Open
Abstract
Alpinia oxyphylla Miq. (i.e., A. oxyphylla), a traditional Chinese medicine, can exert neuroprotective effects in ameliorating mild cognitive impairment and improving the pathological hallmarks of Alzheimer's disease (AD). Here, 50 active compounds and 164 putative targets were collected and identified with 251 clinically tested AD-associated target proteins using network pharmacology approaches. Based on the Gene Ontology/Kyoto Encyclopedia of Genes and Genomes pathway enrichments, the compound-target-pathway-disease/protein-protein interaction network constructions, and the network topological analysis, we concluded that A. oxyphylla may have neuroprotective effects by regulating neurotransmitter function, as well as brain plasticity in neuronal networks. Moreover, closely-related AD proteins, including the amyloid-beta precursor protein, the estrogen receptor 1, acetylcholinesterase, and nitric oxide synthase 2, were selected as the bottleneck nodes of network for further verification by molecular docking. Our analytical results demonstrated that terpene, as the main compound of A. oxyphylla extract, exerts neuroprotective effects, providing new insights into the development of a natural therapy for the prevention and treatment of AD.
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Effect-directed screening of Bacillus lipopeptide extracts via hyphenated high-performance thin-layer chromatography. J Chromatogr A 2019; 1605:460366. [DOI: 10.1016/j.chroma.2019.460366] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/10/2019] [Accepted: 07/12/2019] [Indexed: 12/25/2022]
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Cassiano DSA, Reis IMA, Estrela IDO, de Freitas HF, Pita SSDR, David JM, Branco A. Acetylcholinesterase inhibitory activities and bioguided fractionation of the Ocotea percoriacea extracts: HPLC-DAD-MS/MS characterization and molecular modeling of their alkaloids in the active fraction. Comput Biol Chem 2019; 83:107129. [PMID: 31606587 DOI: 10.1016/j.compbiolchem.2019.107129] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/21/2019] [Accepted: 09/16/2019] [Indexed: 10/25/2022]
Abstract
In vitro acetylcholinesterase activities of the hexane, dichloromethane, ethyl acetate, n-butanol and aqueous extracts of leaves of Ocotea percoriacea Kosterm. (Lauraceae) were evaluated. The bioguided fractionation of the most active extract (dichloromethane) using silica gel open-column chromatography led to an active alkaloidal fraction composed of isocorydine N-oxide, isocorydine N-oxide derivative, palmatine, roemerine and roemerine N-Oxide. The identification of the chemical structure of these compounds was carried out with high-performance liquid chromatography coupled to electrospray ionization multiple-stage mass spectrometry (HPLC-ESI-MS/MS). Aiming to understand their inhibitory activities, these alkaloids were docked into a 3D model of Electrophorus electricus Acetylcholinesterase (EelAChE) built in the Modeller 9.18 employing homology modeling approach. The results suggest that the alkaloids had the same binding mode and, possibly, the inhibition mechanism of classic drugs (ex. tacrine and donepezil). The structural difference of these compounds opens a new opportunity for the optimization of leading compounds.
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Affiliation(s)
- Dayse Santos Almeida Cassiano
- Laboratory of Phytochemistry, Health Department, State University of Feira de Santana (UEFS), Feira de Santana, Bahia, Brazil
| | - Isabella Mary Alves Reis
- Laboratory of Phytochemistry, Health Department, State University of Feira de Santana (UEFS), Feira de Santana, Bahia, Brazil
| | - Isabela de Oliveira Estrela
- Laboratory of Bioinformatics and Molecular Modeling (LaBiMM), Pharmacy College, Federal University of Bahia (UFBA), Salvador, Bahia, Brazil
| | - Humberto Fonseca de Freitas
- Laboratory of Bioinformatics and Molecular Modeling (LaBiMM), Pharmacy College, Federal University of Bahia (UFBA), Salvador, Bahia, Brazil
| | - Samuel Silva da Rocha Pita
- Laboratory of Bioinformatics and Molecular Modeling (LaBiMM), Pharmacy College, Federal University of Bahia (UFBA), Salvador, Bahia, Brazil
| | - Jorge Mauricio David
- Chemistry Institute, Federal University of Bahia (UFBA), Salvador, Bahia, Brazil
| | - Alexsandro Branco
- Laboratory of Phytochemistry, Health Department, State University of Feira de Santana (UEFS), Feira de Santana, Bahia, Brazil.
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Fernández MJF, Valero-Cases E, Rincon-Frutos L. Food Components with the Potential to be Used in the Therapeutic Approach of Mental Diseases. Curr Pharm Biotechnol 2019; 20:100-113. [PMID: 30255749 DOI: 10.2174/1389201019666180925120657] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 08/27/2018] [Accepted: 09/05/2018] [Indexed: 01/24/2023]
Abstract
BACKGROUND Neurological disorders represent a high influence in our society throughout the world. Although the symptoms arising from those diseases are well known, the causes and mechanisms are complex and depending on multiple factors. Some food components consumed as part of our diet have been studied regarding their incidence in different common neurological diseases such as Alzheimer disease, major depression, Parkinson disease, autism and schizophrenia among others. OBJECTIVE In this review, information has been gathered on the main evidences arising from studies on the most promising food components, related to their therapeutic potential, as part of dietary supplements or through the diet, as an alternative or a complement of the traditional drug treatments. Those food components include vitamins, minerals, fatty acids, carotenoids, polyphenols, bioactive peptides, probiotics, creatine and saponins. RESULTS Many in vitro and in vivo animal studies, randomized and placebo control trials, and systematic reviews on the scientific results published in the literature, have been discussed, highlighting the more recent advances, also with the aim to explore the main research needs. Particular attention has been paid to the mechanisms of action of the compounds regarding their anti-inflammatory, antioxidative properties and neuronal protection. CONCLUSION More research is needed to prove the therapeutic potential of the food components based on scientific evidence, also on intervention studies to demonstrate the improvement of neuronal and cognitive impairments.
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Affiliation(s)
- María J F Fernández
- Agro-food Technology Department, High Polytechnic School, Miguel Hernandez University, Orihuela, Alicante, Spain
| | - Estefanía Valero-Cases
- Agro-food Technology Department, High Polytechnic School, Miguel Hernandez University, Orihuela, Alicante, Spain
| | - Laura Rincon-Frutos
- Ocular Neurobiology Group, Instituto de Neurociencias de Alicante UMH-CSIC, San Juan, Alicante, Spain
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Design and Synthesis of 2-Substitutedphenyl Benzo[D]Thiazole Derivatives and Their β-Amyloid Aggregation and Cholinesterase Inhibitory Activities. Pharm Chem J 2019. [DOI: 10.1007/s11094-019-02000-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Ghosh S, Jana K, Ganguly B. Revealing the mechanistic pathway of cholinergic inhibition of Alzheimer's disease by donepezil: a metadynamics simulation study. Phys Chem Chem Phys 2019; 21:13578-13589. [PMID: 31173012 DOI: 10.1039/c9cp02613d] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Donepezil, an acetylcholinesterase inhibitor, is an approved drug for the symptomatic treatment of Alzheimer's disease (AD). The mechanistic pathway for the inhibition mechanism of acetylcholinesterase (AChE) by donepezil is not well explored. We report for the first time, the inhibition mechanism of AChE by the donepezil drug molecule for the hydrolysis of acetylcholine (ACh) with docking and well-tempered metadynamics (WTMtD) simulations with a human acetylcholinesterase (hAChE) crystal structure (). This study explored the orientation of the donepezil drug molecule inside the gorge of AChE. The 1D free energy surface obtained from WTMtD simulation studies reveals that the orientation of donepezil in the crystal donepezil (-87.25 kJ mol-1) is energetically more favored than the other orientation of donepezil (-74.74 kJ mol-1) for inhibition of AChE. The free energy landscape computation for the two sets of CVs further corroborates the 1D free energy surface. The WTMtD simulation performed with the crystal structure of donepezil bound hAChE gives the conformation of donepezil at Basin-I as similar to the conformation of donepezil observed in the crystal structure (). The WTMtD simulations further reveal that the bridged water molecules are more ordered near the catalytic triad of AChE to deter the nucleophilicity of Ser203 through intermolecular hydrogen bonding when donepezil approaches near to the active site gorge of AChE. The presence of donepezil near the active site of AChE can inhibit its approach for ACh hydrolysis; this is revealed through the docking study, where the drug molecule inside the active gorge of hAChE restricts the approach of ACh to Ser203 for the hydrolysis process.
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Affiliation(s)
- Shibaji Ghosh
- Computation and Simulation Unit (Analytical and Environmental Science Division and Centralized Instrument Facility), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364 002, India. and Academy of Scientific and Innovative Research, CSIR-CSMCRI, Bhavnagar, Gujarat 364 002, India
| | - Kalyanashis Jana
- Computation and Simulation Unit (Analytical and Environmental Science Division and Centralized Instrument Facility), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364 002, India. and Academy of Scientific and Innovative Research, CSIR-CSMCRI, Bhavnagar, Gujarat 364 002, India
| | - Bishwajit Ganguly
- Computation and Simulation Unit (Analytical and Environmental Science Division and Centralized Instrument Facility), CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar, Gujarat 364 002, India. and Academy of Scientific and Innovative Research, CSIR-CSMCRI, Bhavnagar, Gujarat 364 002, India
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Chlebek J, Korábečný J, Doležal R, Štěpánková Š, Pérez DI, Hošťálková A, Opletal L, Cahlíková L, Macáková K, Kučera T, Hrabinová M, Jun D. In Vitro and In Silico Acetylcholinesterase Inhibitory Activity of Thalictricavine and Canadine and Their Predicted Penetration across the Blood-Brain Barrier. Molecules 2019; 24:E1340. [PMID: 30959739 PMCID: PMC6480038 DOI: 10.3390/molecules24071340] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 03/31/2019] [Accepted: 04/04/2019] [Indexed: 01/20/2023] Open
Abstract
In recent studies, several alkaloids acting as cholinesterase inhibitors were isolated from Corydalis cava (Papaveraceae). Inhibitory activities of (+)-thalictricavine (1) and (+)-canadine (2) on human acetylcholinesterase (hAChE) and butyrylcholinesterase (hBChE) were evaluated with the Ellman's spectrophotometric method. Molecular modeling was used to inspect the binding mode of compounds into the active site pocket of hAChE. The possible permeability of 1 and 2 through the blood⁻brain barrier (BBB) was predicted by the parallel artificial permeation assay (PAMPA) and logBB calculation. In vitro, 1 and 2 were found to be selective hAChE inhibitors with IC50 values of 0.38 ± 0.05 µM and 0.70 ± 0.07 µM, respectively, but against hBChE were considered inactive (IC50 values > 100 µM). Furthermore, both alkaloids demonstrated a competitive-type pattern of hAChE inhibition and bind, most probably, in the same AChE sub-site as its substrate. In silico docking experiments allowed us to confirm their binding poses into the active center of hAChE. Based on the PAMPA and logBB calculation, 2 is potentially centrally active, but for 1 BBB crossing is limited. In conclusion, 1 and 2 appear as potential lead compounds for the treatment of Alzheimer's disease.
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Affiliation(s)
- Jakub Chlebek
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Jan Korábečný
- Biomedical Research Center, University Hospital Hradec Králové, Sokolská 581, 500 05 Hradec Králové, Czech Republic.
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Třebešská 1575, 500 01 Hradec Králové, Czech Republic.
| | - Rafael Doležal
- Biomedical Research Center, University Hospital Hradec Králové, Sokolská 581, 500 05 Hradec Králové, Czech Republic.
- Center for Basic and Applied Research, Faculty of Informatics and Management, University of Hradec Králové, Rokitanského 62, 50003 Hradec Králové, Czech Republic.
| | - Šárka Štěpánková
- Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 532 10 Pardubice, Czech Republic.
| | - Daniel I Pérez
- Centro de Investigaciones Biológicas, Avenida Ramiro de Maetzu 9, 280 40 Madrid, Spain.
| | - Anna Hošťálková
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Lubomír Opletal
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Lucie Cahlíková
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Kateřina Macáková
- ADINACO Research Group, Department of Pharmaceutical Botany, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Tomáš Kučera
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Třebešská 1575, 500 01 Hradec Králové, Czech Republic.
| | - Martina Hrabinová
- Biomedical Research Center, University Hospital Hradec Králové, Sokolská 581, 500 05 Hradec Králové, Czech Republic.
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Třebešská 1575, 500 01 Hradec Králové, Czech Republic.
| | - Daniel Jun
- Biomedical Research Center, University Hospital Hradec Králové, Sokolská 581, 500 05 Hradec Králové, Czech Republic.
- Department of Toxicology and Military Pharmacy, Faculty of Military Health Sciences, University of Defense, Třebešská 1575, 500 01 Hradec Králové, Czech Republic.
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Sichaem J, Tip-pyang S, Lugsanangarm K. Bioactive Aporphine Alkaloids from the Roots of Artabotrys spinosus: Cholinesterase Inhibitory Activity and Molecular Docking Studies. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801301011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Six aporphine alkaloids (1–6) were isolated from Artabotrys spinosus roots based on bioassay-guided fraction and chromatographic methods. All isolated alkaloids were evaluated for their cholinesterase (ChEs) inhibitory activities, in which compounds 4 and 6 exhibited the highest activity toward butyrylcholinesterase (BChE) and acetylcholinesterase (AChE), respectively. The Lineweaver-Burk plots suggested that 4 and 6 were mixed mode inhibitors toward BChE and AChE enzymes, respectively. In addition, the experimental results were also confirmed by molecular docking analysis. This information can help in designing a new inhibitor in the class of aporphine alkaloids in against Alzheimer's disease.
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Affiliation(s)
- Jirapast Sichaem
- Department of Chemistry, Faculty of Science and Technology, Thammasat University Lampang Center, Lampang 52190, Thailand
| | - Santi Tip-pyang
- Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Kiattisak Lugsanangarm
- Program of Chemistry, Faculty of Science and Technology, Bansomdejchaopraya Rajabhat University, Bangkok 10600, Thailand
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Effects of Ficus umbellata (Moraceae) Aqueous Extract and 7-Methoxycoumarin on Scopolamine-Induced Spatial Memory Impairment in Ovariectomized Wistar Rats. Behav Neurol 2018; 2018:5751864. [PMID: 30363978 PMCID: PMC6186347 DOI: 10.1155/2018/5751864] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Accepted: 07/10/2018] [Indexed: 11/29/2022] Open
Abstract
The present work was undertaken to evaluate the ability of F. umbellata aqueous extract and its major component 7-methoxycoumarin (MC) to improve scopolamine-induced spatial memory impairment in ovariectomized Wistar rats. For this to be done, 10 sham-operated and 30 postmenopausal-like rats were randomly distributed in eight groups (n = 5) and treated with distilled water (2 mL/250 g), estradiol valerate (1 mg/kg BW), piracetam (1.5 mg/kg BW), F. umbellata aqueous extract (50 and 200 mg/kg BW), or MC (1 mg/kg BW) for 21 consecutive days. Before and after the memory impairment with scopolamine (2 mg/kg BW), animals underwent behavioral evaluations on Y- and radial mazes. As results, age and ovariectomy did not induce significant changes in the reference memory errors. While age decreased working memory errors, ovariectomy increased it. The MC as well as F. umbellata extract significantly increased (p < 0.01) the percentage of spontaneous alternation and decreased (p < 0.001) working and spatial reference memory errors and anxiety parameters (rearing and grooming) in ovariectomized rats. MC significantly reduced (p < 0.05) the MDA level, but resulted in an increase in GSH level in brain homogenates. These results suggest that MC is endowed with neuroprotective effects and could account for the neuroprotective effects of F. umbellata in rats.
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Isoindolines/isoindoline-1,3-diones as AChE inhibitors against Alzheimer’s disease, evaluated by an improved ultra-micro assay. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2226-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Um MY, Lim DW, Son HJ, Cho S, Lee C. Phlorotannin-rich fraction from Ishige foliacea brown seaweed prevents the scopolamine-induced memory impairment via regulation of ERK-CREB-BDNF pathway. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.10.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Kim YJ, Lim HS, Kim Y, Lee J, Kim BY, Jeong SJ. Phytochemical Quantification and the In Vitro Acetylcholinesterase Inhibitory Activity of Phellodendron chinense and Its Components. Molecules 2017; 22:E925. [PMID: 28574473 PMCID: PMC6152634 DOI: 10.3390/molecules22060925] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 05/23/2017] [Accepted: 05/30/2017] [Indexed: 01/28/2023] Open
Abstract
The dried bark of Phellodendron chinense has been used as a traditional herbal medicine to remove damp heat, relieve consumptive fever, and cure dysentery and diarrhea. In the present study, we performed quantitative analyses of the two components of P. chinense, phellodendrine and berberine, using high-performance liquid chromatography. A 70% ethanol extract of P. chinense was prepared and the two components were separated on a C-18 analytical column using a gradient solvent system of acetonitrile and 0.1% (v/v) aqueous trifluoroacetic acid. The ultraviolet wavelength used for detection was 200 nm for phellodendrine and 226 nm for berberine. The analytical method established here showed high linearity (correlation coefficient, ≥0.9991). The amount of phellodendrine and berberine used was 22.255 ± 0.123 mg/g and 269.651 ± 1.257 mg/g, respectively. Moreover, we performed an in vitro acetylcholinesterase (AChE) activity assay and an amyloid-β aggregation test to examine the biological properties of phellodendrine and berberine as therapeutic drugs for Alzheimer's disease. Phellodendrine and berberine inhibited AChE activity in a dose-dependent manner (IC50 = 36.51 and 0.44 μM, respectively). In contrast, neither phellodendrine nor berberine had an effect on amyloid-β aggregation. The P. chinense extract and phellodendrine, but not berberine, exhibited antioxidant activity by increasing radical scavenging activity. Moreover, P. chinense demonstrated a neuroprotective effect in hydrogen peroxide-treated HT22 hippocampal cells. Overall, our findings suggest that P. chinense has potential as an anti-Alzheimer's agent via the suppression of the enzymatic activity of acetylcholinesterase and the stimulation of antioxidant activity.
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Affiliation(s)
- Yu Jin Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea.
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea.
| | - Hye-Sun Lim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea.
| | - Yoonju Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea.
| | - Jun Lee
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea.
- Korean Medicine of Life Science, University of Science & Technology, Daejeon 34113, Korea.
| | - Bu-Yeo Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea.
| | - Soo-Jin Jeong
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon 34054, Korea.
- Korean Medicine of Life Science, University of Science & Technology, Daejeon 34113, Korea.
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Ozadali-Sari K, Tüylü Küçükkılınç T, Ayazgok B, Balkan A, Unsal-Tan O. Novel multi-targeted agents for Alzheimer's disease: Synthesis, biological evaluation, and molecular modeling of novel 2-[4-(4-substitutedpiperazin-1-yl)phenyl]benzimidazoles. Bioorg Chem 2017; 72:208-214. [PMID: 28478328 DOI: 10.1016/j.bioorg.2017.04.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 04/28/2017] [Accepted: 04/29/2017] [Indexed: 11/19/2022]
Abstract
The present study describes the synthesis, pharmacological evaluation (BChE/AChE inhibition, Aβ antiaggregation, and neuroprotective effects), and molecular modeling studies of novel 2-[4-(4-substitutedpiperazin-1-yl)phenyl]benzimidazole derivatives. The alkyl-substituted derivatives exhibited selective inhibition on BChE with varying efficiency. Compounds 3b and 3d were found to be the most potent inhibitors of BChE with IC50 values of 5.18 and 5.22μM, respectively. The kinetic studies revealed that 3b is a partial non-competitive BChE inhibitor. Molecular modeling studies also showed that the alkyl-substituted derivatives were able to reach the catalytic anionic site of the BChE. The compounds with an inhibitory effect on BChE were subsequently screened for their Aβ antiaggregating and neuroprotective activities. Compounds 3a and 3b exerted a potential neuroprotective effect against H2O2 and Aβ-induced cytotoxicity in SH-SY5Y cells. Collectively, 3b was found as the most promising compound for the development of multi-target directed ligands against Alzheimer's disease.
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Affiliation(s)
- Keriman Ozadali-Sari
- Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkey
| | | | - Beyza Ayazgok
- Hacettepe University, Faculty of Pharmacy, Department of Biochemistry, Ankara, Turkey
| | - Ayla Balkan
- Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkey
| | - Oya Unsal-Tan
- Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkey.
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Abstract
Alzheimer's disease is an age-related neurodegenerative disorder characterized by memory deficits. Various studies have been carried out to find therapeutic approaches for Alzheimer's disease. However, the proper treatment option is still not available. There is no cure for Alzheimer's disease, but symptomatic treatment may improve the memory and other dementia related problems. Traditional medicine is practiced worldwide as memory enhancer since ancient times. Natural therapy including herbs and medicinal plants has been used in the treatment of memory deficits such as dementia, amnesia, as well as Alzheimer's disease since a long time. Medicinal plants have been used in different systems of medicine, particularly Unani system of medicines and exhibited their powerful roles in the management and cure of memory disorders. Most of herbs and plants have been chemically evaluated and their efficacy has also been proven in clinical trials. However, the underlying mechanisms of actions are still on the way. In this paper, we have reviewed the role of different medicinal plants that play an important role in the treatment of Alzheimer's disease and memory deficits using conventional herbal therapy.
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Affiliation(s)
- Muhammad Akram
- Department of Eastern Medicine and Surgery, Faculty of Medical and Health Sciences, The University of Poonch, Rawalakot, Azad Jammu and Kashmir, Pakistan
| | - Allah Nawaz
- First Department of Internal Medicine, Faculty of Medicine, University of Toyama, Toyama, Japan
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Ferreira Neto DC, de Souza Ferreira M, da Conceição Petronilho E, Alencar Lima J, Oliveira Francisco de Azeredo S, de Oliveira Carneiro Brum J, Jorge do Nascimento C, Figueroa Villar JD. A new guanylhydrazone derivative as a potential acetylcholinesterase inhibitor for Alzheimer's disease: synthesis, molecular docking, biological evaluation and kinetic studies by nuclear magnetic resonance. RSC Adv 2017. [DOI: 10.1039/c7ra04180b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Molecular docking, in silico studies and NMR show that the new guanylhydrazone is a promising compound for the treatment of Alzheimer's disease.
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Dorosti N, Jamshidi F. Plant-mediated gold nanoparticles by Dracocephalum kotschyi as anticholinesterase agent: Synthesis, characterization, and evaluation of anticancer and antibacterial activity. J Appl Biomed 2016. [DOI: 10.1016/j.jab.2016.03.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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40
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Coumarins as cholinesterase inhibitors: A review. Chem Biol Interact 2016; 254:11-23. [DOI: 10.1016/j.cbi.2016.05.001] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 04/14/2016] [Accepted: 05/01/2016] [Indexed: 11/22/2022]
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41
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Chemical composition and in vitro evaluation of antioxidant, antimicrobial, cytotoxicity and anti-acetylcholinesterase properties of Tunisian Origanum majorana L. essential oil. Microb Pathog 2016; 95:86-94. [PMID: 26997648 DOI: 10.1016/j.micpath.2016.03.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 03/03/2016] [Accepted: 03/07/2016] [Indexed: 12/25/2022]
Abstract
This study investigated the chemical composition and evaluated the antioxidant, antimicrobial, cytotoxic and anti-acetylcholinesterase properties of Tunisian Origanum majorana essential oil. The findings showed that the oil exhibited high activity, particularly in terms of reducing power and β-Carotene bleaching, inducing higher IC50 values than BHT. The oil showed an important antimicrobial activity against 25 bacterial and fungal strains. In fact, the IZ, MIC and MBC values recorded for the bacterial strains were in the range of 8 ± 0-18.33 ± 0.57 mm, 0.097-3.125 and 0.39-6.25 mg/mL, respectively. The IZ, MIC and MFC values of the fungal strains varied between 11±0-28 ± 0 mm, 0.058-0.468 mg/mL and 0.234-1.875 mg/mL, respectively. A low cytotoxic effect was observed against cancer (Hep-2 and HT29) and continuous cell lineage (Vero), with CC50 values ranging from 13.73 to 85.63 mg/mL. The oil was also evaluated for anti-acetylcholinesterase effects, which showed that it exhibited significant activity with IC50 values reaching 150.33 ± 2.02 μg/mL.
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Ahadian S, Sadeghian RB, Salehi S, Ostrovidov S, Bae H, Ramalingam M, Khademhosseini A. Bioconjugated Hydrogels for Tissue Engineering and Regenerative Medicine. Bioconjug Chem 2015; 26:1984-2001. [DOI: 10.1021/acs.bioconjchem.5b00360] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Samad Ahadian
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Ramin Banan Sadeghian
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Sahar Salehi
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Serge Ostrovidov
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Hojae Bae
- College
of Animal Bioscience and Technology, Department of Bioindustrial Technologies, Konkuk University, Hwayang-dong,
Kwangjin-gu, Seoul 143-701, Republic of Korea
| | - Murugan Ramalingam
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
- Centre
for Stem Cell Research, Institute for Stem Cell Biology and Regenerative Medicine, Christian Medical College Campus, Vellore 632002, India
| | - Ali Khademhosseini
- WPI-Advanced
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
- College
of Animal Bioscience and Technology, Department of Bioindustrial Technologies, Konkuk University, Hwayang-dong,
Kwangjin-gu, Seoul 143-701, Republic of Korea
- Department
of Medicine, Center for Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, United States
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Sichaem J, Rojpitikul T, Sawasdee P, Lugsanangarm K, Tip-Pyang S. Furoquinoline Alkaloids from the Leaves of Evodia Lepta as Potential Cholinesterase Inhibitors and their Molecular Docking. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000811] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Nine furoquinoline alkaloids (1–9) were isolated from the leaves of Evodia lepta based on bioassay-guided fractionation and chromatographic techniques. All isolates were evaluated for their cholinesterase (ChEs) inhibitory activities, in which kokusaginine (7) and melineurine (5) exhibited the highest activity toward AChE and BChE, respectively. Lineweaver- Burk plots indicated that 5 and 7 were mixed mode inhibitors of both ChE enzymes. Molecular docking studies on the binding sites of AChE and BChE were performed in order to afford a molecular insight into the mode of action of these active compounds. From this study these compounds have emerged as promising molecules for Alzheimer's disease therapy.
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Affiliation(s)
- Jirapast Sichaem
- Natural Products Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanawan Rojpitikul
- Natural Products Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Pattara Sawasdee
- Natural Products Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kiattisak Lugsanangarm
- Computational Chemistry Unit Cell, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Santi Tip-Pyang
- Natural Products Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
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Cahlíková L, Pérez DI, Štěpánková Š, Chlebek J, Šafratová M, Hošt'álková A, Opletal L. In Vitro Inhibitory Effects of 8-O-Demethylmaritidine and Undulatine on Acetylcholinesterase and Their Predicted Penetration across the Blood-Brain Barrier. JOURNAL OF NATURAL PRODUCTS 2015; 78:1189-1192. [PMID: 26030662 DOI: 10.1021/acs.jnatprod.5b00191] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Alzheimer's disease is the most common cause of dementia. Currently, acetylcholinesterase (AChE) inhibition is the most widely used therapeutic treatment. A large number of naturally occurring compounds have been found to inhibit AChE. In this report the mechanism of AChE inhibition of two Amaryllidaceae alkaloids, 8-O-demethylmaritidine (1) and undulatine (2), and their possible penetration across the blood-brain barrier have been studied. Both compounds act via a mixed inhibition mechanism. Based on the parallel artificial permeation assay (PAMPA) for the prediction of blood-brain barrier (BBB) penetration, only 2 should be able to cross the BBB by passive permeation.
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Affiliation(s)
- Lucie Cahlíková
- †ADINACO Research Group, Department of Pharmaceutical Botany and Ecology, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Daniel I Pérez
- ‡Centro de Investigaciones Biológicas, Avenida Ramiro de Maeztu, 9, 28040 Madrid, Spain
| | - Šárka Štěpánková
- §Department of Biological and Biochemical Sciences, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 532 10 Pardubice, Czech Republic
| | - Jakub Chlebek
- †ADINACO Research Group, Department of Pharmaceutical Botany and Ecology, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Marcela Šafratová
- †ADINACO Research Group, Department of Pharmaceutical Botany and Ecology, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Anna Hošt'álková
- †ADINACO Research Group, Department of Pharmaceutical Botany and Ecology, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Lubomír Opletal
- †ADINACO Research Group, Department of Pharmaceutical Botany and Ecology, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
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In silico study of peptide inhibitors against BACE 1. SYSTEMS AND SYNTHETIC BIOLOGY 2015; 9:67-72. [PMID: 25972990 DOI: 10.1007/s11693-015-9169-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 03/12/2015] [Indexed: 10/23/2022]
Abstract
Peptides are increasingly used as inhibitors of various disease specific targets. Several naturally occurring and synthetically developed peptides are undergoing clinical trials. Our work explores the possibility of reusing the non-expressing DNA sequences to predict potential drug-target specific peptides. Recently, we experimentally demonstrated the artificial synthesis of novel proteins from non-coding regions of Escherichia coli genome. In this study, a library of synthetic peptides (Synpeps) was constructed from 2500 intergenic E. coli sequences and screened against Beta-secretase 1 protein, a known drug target for Alzheimer's disease (AD). Secondary and tertiary protein structure predictions followed by protein-protein docking studies were performed to identify the most promising enzyme inhibitors. Interacting residues and favorable binding poses of lead peptide inhibitors were studied. Though initial results are encouraging, experimental validation is required in future to develop efficient target specific inhibitors against AD.
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Li Y, Zhang XX, Jiang LJ, Yuan L, Cao TT, Li X, Dong L, Li Y, Yin SF. Inhibition of Acetylcholinesterase (AChE): A Potential Therapeutic Target to Treat Alzheimer's Disease. Chem Biol Drug Des 2015; 86:776-82. [PMID: 25736722 DOI: 10.1111/cbdd.12550] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 02/18/2015] [Indexed: 11/30/2022]
Abstract
A new series of icariin derivatives were synthesized and evaluated for their in vitro acetylcholinesterase (AChE) inhibitory activity. Most of the tested compounds exhibited high AChE inhibition and low toxicity, and among which compounds 1, 2, and 10 were the most potent (IC50 = 71.52 ± 22.43, 8.28 ± 1.45, 5.830 ± 1.78 nm, respectively).
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Affiliation(s)
- Yong Li
- School of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
| | - Xiao-Xiao Zhang
- College of Life Sciences, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
| | - Li-Juan Jiang
- School of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
| | - Li Yuan
- School of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
| | - Ting-Ting Cao
- School of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
| | - Xia Li
- School of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
| | - Lin Dong
- School of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
| | - Ying Li
- School of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
| | - Shu-Fan Yin
- School of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu, 610064, China
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Rafiq M, Saleem M, Hanif M, Abbas Q, Lee KH, Seo SY. Acetylcholinesterase inhibition activity of some quinolinyl substituted triazolothiadiazole derivatives. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1068162015020089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Synthesis of α, β-unsaturated carbonyl based compounds as acetylcholinesterase and butyrylcholinesterase inhibitors: Characterization, molecular modeling, QSAR studies and effect against amyloid β-induced cytotoxicity. Eur J Med Chem 2014; 83:355-65. [DOI: 10.1016/j.ejmech.2014.06.034] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 06/12/2014] [Accepted: 06/17/2014] [Indexed: 01/02/2023]
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Lycodine-type alkaloids from Lycopodiastrum casuarinoides and their acetylcholinesterase inhibitory activity. Molecules 2014; 19:9999-10010. [PMID: 25014530 PMCID: PMC6271639 DOI: 10.3390/molecules19079999] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 06/18/2014] [Accepted: 06/27/2014] [Indexed: 11/16/2022] Open
Abstract
Four new lycodine-type alkaloids, namely 16-hydroxyhuperzine B (1), N-methyl-11-acetoxyhuperzine B (2), 8,15-dihydrolycoparin A (3) and (7S,12S,13R)-huperzine D-16-O-β-d-glucopyranoside (4), along with ten known analogues 5-14, were isolated from the whole plant of Lycopodiastrum casuarinoides. The structures of the new compounds were elucidated by means of spectroscopic techniques (IR, MS, NMR, and CD) and chemical methods. Compounds 1 and 2 possessed four connected six-membered rings, while compounds 3 and 4 were piperidine ring cleavage products. In particular, compound 4 was a lycopodium alkaloidal glycoside which is reported for the first time. Among the isolated compounds N-demethylhuperzinine (7), huperzine C (8), huperzine B (9) and lycoparin C (13) possessed significant inhibitory activity against acetylcholinesterase, and the new compound 1 showed moderate inhibitory activity. The structure activity relationships were discussed.
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Two-stage extraction of antitumor, antioxidant and antiacetylcholinesterase compounds from Ganoderma lucidum fruiting body. J Supercrit Fluids 2014. [DOI: 10.1016/j.supflu.2014.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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