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Lv X, He M, Wei J, Li Q, Nie F, Shao Z, Wang Z, Tian L. Development of an effective QSAR-based hazard threshold prediction model for the ecological risk assessment of aromatic hydrocarbon compounds. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:47220-47236. [PMID: 38990260 DOI: 10.1007/s11356-024-34016-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 06/12/2024] [Indexed: 07/12/2024]
Abstract
The insufficient hazard thresholds of specific individual aromatic hydrocarbon compounds (AHCs) with diverse structures limit their ecological risk assessment. Thus, herein, quantitative structure-activity relationship (QSAR) models for estimating the hazard threshold of AHCs were developed based on the hazardous concentration for 5% of species (HC5) determined using the optimal species sensitivity distribution models and on the molecular descriptors calculated via the PADEL software and ORCA software. Results revealed that the optimal QSAR model, which involved eight descriptors, namely, Zagreb, GATS2m, VR3_Dzs, AATSC2s, GATS2c, ATSC2i, ω, and Vm, displayed excellent performance, as reflected by an optimal goodness of fit (R2adj = 0.918), robustness (Q2LOO = 0.869), and external prediction ability (Q2F1 = 0.760, Q2F2 = 0.782, and Q2F3 = 0.774). The hazard thresholds estimated using the optimal QSAR model were approximately close to the published water quality criteria developed by different countries and regions. The quantitative structure-toxicity relationship demonstrated that the molecular descriptors associated with electrophilicity and topological and electrotopological properties were important factors that affected the risks of AHCs. A new and reliable approach to estimate the hazard threshold of ecological risk assessment for various aromatic hydrocarbon pollutants was provided in this study, which can be widely popularised to similar contaminants with diverse structures.
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Affiliation(s)
- Xiudi Lv
- Hubei Key Laboratory of Petroleum Geochemistry and Environment (Yangtze University), Wuhan, 430100, China
- School of Resources and Environment, Yangtze University, Wuhan, 430100, China
| | - Mei He
- Hubei Key Laboratory of Petroleum Geochemistry and Environment (Yangtze University), Wuhan, 430100, China
- School of Resources and Environment, Yangtze University, Wuhan, 430100, China
| | - Jiajia Wei
- Hubei Key Laboratory of Petroleum Geochemistry and Environment (Yangtze University), Wuhan, 430100, China
- School of Resources and Environment, Yangtze University, Wuhan, 430100, China
| | - Qiang Li
- Hubei Key Laboratory of Petroleum Geochemistry and Environment (Yangtze University), Wuhan, 430100, China
- School of Resources and Environment, Yangtze University, Wuhan, 430100, China
| | - Fan Nie
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology Co., Ltd, Beijing, 102206, China
| | - Zhiguo Shao
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology Co., Ltd, Beijing, 102206, China
| | - Zhansheng Wang
- State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology Co., Ltd, Beijing, 102206, China
| | - Lei Tian
- Hubei Key Laboratory of Petroleum Geochemistry and Environment (Yangtze University), Wuhan, 430100, China.
- School of Petroleum Engineering, Yangtze University, Wuhan, 430100, China.
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2
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Kumar A, Kumar V, Ojha PK, Roy K. Chronic aquatic toxicity assessment of diverse chemicals on Daphnia magna using QSAR and chemical read-across. Regul Toxicol Pharmacol 2024; 148:105572. [PMID: 38325631 DOI: 10.1016/j.yrtph.2024.105572] [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: 10/24/2023] [Revised: 01/06/2024] [Accepted: 01/26/2024] [Indexed: 02/09/2024]
Abstract
We have modeled here chronic Daphnia toxicity taking pNOEC (negative logarithm of no observed effect concentration in mM) and pEC50 (negative logarithm of half-maximal effective concentration in mM) as endpoints using QSAR and chemical read-across approaches. The QSAR models were developed by strictly obeying the OECD guidelines and were found to be reliable, predictive, accurate, and robust. From the selected features in the developed models, we have found that an increase in lipophilicity and saturation, the presence of electrophilic or electronegative or heavy atoms, the presence of sulphur, amine, and their related functionality, an increase in mean atomic polarizability, and higher number of (thio-) carbamates (aromatic) groups are responsible for chronic toxicity. Therefore, this information might be useful for the development of environmentally friendly and safer chemicals and data-gap filling as well as reducing the use of identified toxic chemicals which have chronic toxic effects on aquatic ecosystems. Approved classes of drugs from DrugBank databases and diverse groups of chemicals from the Chemical and Product Categories (CPDat) database were also assessed through the developed models.
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Affiliation(s)
- Ankur Kumar
- Drug Discovery and Development (DDD) Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032, India
| | - Vinay Kumar
- Drug Theoretics and Cheminformatics (DTC) Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032, India
| | - Probir Kumar Ojha
- Drug Discovery and Development (DDD) Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032, India
| | - Kunal Roy
- Drug Theoretics and Cheminformatics (DTC) Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032, India.
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3
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Lian S, Li X, Lv X. Density Functional Theory Study on the Interaction between Aflatoxin B1/M1 and Gold Substrate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:1804-1816. [PMID: 38183291 DOI: 10.1021/acs.langmuir.3c03069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2024]
Abstract
Aflatoxin M1 (AFM1) and its precursor, Aflatoxin B1 (AFB1), are highly pathogenic and mutagenic substances, making the detection and sensing of AFB1/M1 a long-standing focus of researchers. Among various detection techniques, surface-enhanced Raman spectroscopy (SERS) is considered an ideal method for AFB1/M1 detection due to its ability not only to enhance characteristic frequencies but also to detect shifts in these frequencies with high repeatability. Therefore, we employed density functional theory in conjunction with surface-enhanced Raman spectroscopy to investigate the interaction between AFB1/M1 and a Au substrate in the context of the SERS effect for the first time. To predict the potential binding sites of AFB1/M1 and Au within the SERS effect, we performed calculations on the molecular electrostatic potential of AFB1/M1. Considering the crucial role of the binding energy in molecular docking studies, we computed the binding energy between two molecules interacting with Au at different binding sites. The molecular frontier orbitals and related chemical parameters of AFB1/M1 and "molecular-Au" complexes were computed to elucidate the alterations in AFB1/M1 molecules under the SERS effect. Subsequently, the theoretical Raman spectra of AFB1/M1 and the complexes were compared and analyzed, enabling determination of the adsorption conformation of AFB1/M1 on the gold surface based on SERS surface selection rules. These findings not only provide a deeper understanding of the interaction mechanism between molecules and substrates in the SERS effect but also offer theoretical support for developing novel aflatoxin SERS sensors.
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Affiliation(s)
- Shuai Lian
- School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Xiaoqiong Li
- School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China
| | - Xuefei Lv
- School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China
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4
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Rizk MG, Emara AA, Abou-Hussein A, Mahmoud NH. Novel metal complexes of N,N-bis(4-phenylthiazol-2-yl)phthalamide: Synthesis, spectroscopic, thermal and kinetic investigations, molecular modeling, computational calculations, anti-breast cancer studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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5
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Manoharan R, Karthikeyan S, Anandh S, Priya Doss C G, Ramireddy S, Bharanidharan G, Aruna P, Mangaiyarkarasi R, Chinnathambi S, Pandian GN, Ganesan S. A Biophysical Approach of Cytarabine Anticancer Drug Insights into Human Serum Albumin and Checkpoint Kinase 1. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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6
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Pal R, Patra SG, Chattaraj PK. Quantitative Structure-Toxicity Relationship in Bioactive Molecules from a Conceptual DFT Perspective. Pharmaceuticals (Basel) 2022; 15:1383. [PMID: 36355555 PMCID: PMC9695291 DOI: 10.3390/ph15111383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/01/2022] [Accepted: 11/07/2022] [Indexed: 10/29/2023] Open
Abstract
The preclinical drug discovery stage often requires a large amount of costly and time-consuming experiments using huge sets of chemical compounds. In the last few decades, this process has undergone significant improvements by the introduction of quantitative structure-activity relationship (QSAR) modelling that uses a certain percentage of experimental data to predict the biological activity/property of compounds with similar structural skeleton and/or containing a particular functional group(s). The use of machine learning tools along with it has made life even easier for pharmaceutical researchers. Here, we discuss the toxicity of certain sets of bioactive compounds towards Pimephales promelas and Tetrahymena pyriformis in terms of the global conceptual density functional theory (CDFT)-based descriptor, electrophilicity index (ω). We have compared the results with those obtained by using the commonly used hydrophobicity parameter, logP (where P is the n-octanol/water partition coefficient), considering the greater ease of computing the ω descriptor. The Human African trypanosomiasis (HAT) curing activity of 32 pyridyl benzamide derivatives is also studied against Tryphanosoma brucei. In this review article, we summarize these multiple linear regression (MLR)-based QSAR studies in terms of electrophilicity (ω, ω2) and hydrophobicity (logP, (logP)2) parameters.
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Affiliation(s)
- Ranita Pal
- Advanced Technology Development Centre, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Shanti Gopal Patra
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Pratim Kumar Chattaraj
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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7
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Synthesis, Characterization, DFT Studies and Molecular Docking Investigation of 2-oxo-Ethyl Piperidine Pentanamide-derived Sulfonamides as Anti-diabetic Agents. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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8
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Abdulghani MA, Alshehade SA, Kamran S, Alshawsh MA. Effect of monosodium glutamate on serum sex hormones and uterine histology in female rats along with its molecular docking and in-silico toxicity. Heliyon 2022; 8:e10967. [PMID: 36237979 PMCID: PMC9552117 DOI: 10.1016/j.heliyon.2022.e10967] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 07/17/2022] [Accepted: 09/30/2022] [Indexed: 11/06/2022] Open
Abstract
Monosodium glutamate (MSG) is commonly used worldwide as a food flavour enhancer by the food industry. The current study investigated the in vivo toxic effects of MSG on the uterus in adult female Sprague Dawley rats and in vitro using MCF-7 and MDA-MB-231 cells, computational toxicity and molecular docking. The average levels of progesterone and oestrogen in the MSG-treated animals significantly altered. Besides, the average uterine lumen area (μm2) was smaller than the control group. MSG showed high-affinity binding to acetylcholine receptors and disrupted the normal nerve signal with a predicted LD50 of 4500 mg/kg. MSG also demonstrated good binding affinity to human oestrogen receptors beta and some other proteins that have an oxidative stress role in the female reproductive organs. Therefore, a precaution should be taken when utilising this compound, especially for females under the risk factor of hormonal abnormality.
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Affiliation(s)
- Mahfoudh A.M. Abdulghani
- Faculty of Medicine and Health Sciences, University of Science and Technology, Aden, Yemen,Department of Pharmacology & Toxicology, Unaizah College of Pharmacy, Qassim University, Al Qassim 51911, Saudi Arabia,Corresponding author.
| | - Salah Abdulrazak Alshehade
- Department of Pharmacology, School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800 USM Penang, Malaysia,Department of Pharmacology, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Sareh Kamran
- Department of Pharmacology, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Mohammed Abdullah Alshawsh
- Department of Pharmacology, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia,Corresponding author.
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9
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Geerlings P. From Density Functional Theory to Conceptual Density Functional Theory and Biosystems. Pharmaceuticals (Basel) 2022; 15:ph15091112. [PMID: 36145333 PMCID: PMC9505550 DOI: 10.3390/ph15091112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 08/26/2022] [Accepted: 08/27/2022] [Indexed: 12/03/2022] Open
Abstract
The position of conceptual density functional theory (CDFT) in the history of density functional theory (DFT) is sketched followed by a chronological report on the introduction of the various DFT descriptors such as the electronegativity, hardness, softness, Fukui function, local version of softness and hardness, dual descriptor, linear response function, and softness kernel. Through a perturbational approach they can all be characterized as response functions, reflecting the intrinsic reactivity of an atom or molecule upon perturbation by a different system, including recent extensions by external fields. Derived descriptors such as the electrophilicity or generalized philicity, derived from the nature of the energy vs. N behavior, complete this picture. These descriptors can be used as such or in the context of principles such as Sanderson’s electronegativity equalization principle, Pearson’s hard and soft acids and bases principle, the maximum hardness, and more recently, the minimum electrophilicity principle. CDFT has known an ever-growing use in various subdisciplines of chemistry: from organic to inorganic chemistry, from polymer to materials chemistry, and from catalysis to nanotechnology. The increasing size of the systems under study has been coped with thanks to methodological evolutions but also through the impressive evolution in software and hardware. In this flow, biosystems entered the application portfolio in the past twenty years with studies varying (among others) from enzymatic catalysis to biological activity and/or the toxicity of organic molecules and to computational peptidology. On the basis of this evolution, one can expect that “the best is yet to come”.
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Affiliation(s)
- Paul Geerlings
- Research Group of General Chemistry (ALGC), Faculty of Science and Bio-Engineering Science, Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussels, Belgium
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10
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Campos‐Fernández L, Ortiz‐Muñiz R, Cortés‐Barberena E, Mares‐Sámano S, Garduño‐Juárez R, Soriano‐Correa C. Imidazole and nitroimidazole derivatives as NADH-fumarate reductase inhibitors: Density functional theory studies, homology modeling, and molecular docking. J Comput Chem 2022; 43:1573-1595. [PMID: 35796405 PMCID: PMC9541967 DOI: 10.1002/jcc.26959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 03/12/2022] [Accepted: 06/09/2022] [Indexed: 11/11/2022]
Abstract
Chagas disease is caused by Trypanosoma cruzi. Benznidazole and nifurtimox are drugs used for its therapy; nevertheless, they have collateral effects. NADH-fumarate (FUM) reductase is a potential pharmacological target since it is essential for survival of parasite and is not found in humans. The objectives are to design and characterize the electronic structure of imidazole and nitroimidazole derivatives at DFT-M06-2X level in aqueous solution; also, to model the NADH-FUM reductase and analyze its intermolecular interactions by molecular docking. Quantum-chemical descriptors allowed to select the molecules with the best physicochemical properties and lowest toxicity. A high-quality three-dimensional structure of NADH-FUM reductase was obtained by homology modeling. Water molecules do not have influence in the interaction between FUM and NADH-FUM reductase. The main hydrogen-binding interactions for FUM were identified in NADH, Lys172, and Arg89; while hydrophobic interactions in Phe479, Thr174, Met63. The molecules S3-8, S2-8, and S1-8 could be inhibitors of NADH-FUM reductase.
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Affiliation(s)
- Linda Campos‐Fernández
- Doctorado en Biología ExperimentalUniversidad Autónoma Metropolitana‐IztapalapaMexico CityIztapalapaMexico
- Departamento de Ciencias de la SaludUniversidad Autónoma Metropolitana‐IztapalapaMexico CityIztapalapaMexico
- Unidad de Química Computacional, Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMexico CityIztapalapaMexico
| | - Rocío Ortiz‐Muñiz
- Departamento de Ciencias de la SaludUniversidad Autónoma Metropolitana‐IztapalapaMexico CityIztapalapaMexico
| | - Edith Cortés‐Barberena
- Departamento de Ciencias de la SaludUniversidad Autónoma Metropolitana‐IztapalapaMexico CityIztapalapaMexico
| | - Sergio Mares‐Sámano
- CONACYT–Instituto de Ciencias FísicasUniversidad Nacional Autónoma de MéxicoCuernavacaMorelosMexico
| | - Ramón Garduño‐Juárez
- Instituto de Ciencias FísicasUniversidad Nacional Autónoma de MéxicoCuernavacaMorelosMexico
| | - Catalina Soriano‐Correa
- Unidad de Química Computacional, Facultad de Estudios Superiores ZaragozaUniversidad Nacional Autónoma de MéxicoMexico CityIztapalapaMexico
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11
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Bangaru S, Madhu G, Srinivasan M, Manivannan P. Exploring flexibility, intermolecular interactions and ADMET profiles of anti-influenza agent isorhapontigenin: A quantum chemical and molecular docking study. Heliyon 2022; 8:e10122. [PMID: 36039137 PMCID: PMC9418217 DOI: 10.1016/j.heliyon.2022.e10122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/07/2022] [Accepted: 07/25/2022] [Indexed: 12/05/2022] Open
Abstract
Isorhapontigenin (IRPG) drug emerges as promising efficient inhibitor for H1N1 and H3N2 subtypes which belong to influenza A virus; reported with IC50 value of 35.62 and 63.50 μM respectively. When experimental data are compared to the predicted geometrical parameters and vibrational assignments (FT-IR and FT-Raman), the findings indicated a strong correlation. The absorption bands of π→π∗ transitions are revealed through UV-Vis electronic properties; this confirms that the IRPG molecule shows strong bands. Through NBO and HOMO-LUMO analysis, the kinetic stability and chemical reactivity of the IRPG molecule were investigated. By using an MEP map, the IRPG's electrophilic and nucleophilic site selectivity was assessed. In a molecular docking investigation, the IRPG molecule shows a stronger inhibition constant and binding affinity for the H1N1 and H3N2 influenza virus. The IRPG molecule thus reveals good biological actions in nature and can be used as a potential therapeutic drug candidate for H1N1 and H3N2 virus A influenza.
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Affiliation(s)
- Sathya Bangaru
- Department of Physics, Periyar University PG Extension Centre, Dharmapuri, 636 701, Tamilnadu, India.,SSN Research Centre, SSN College of Engineering, Kalavakkam, Chennai, 603 110, Tamilnadu, India
| | - Govindammal Madhu
- Department of Physics, Periyar University PG Extension Centre, Dharmapuri, 636 701, Tamilnadu, India
| | - M Srinivasan
- SSN Research Centre, SSN College of Engineering, Kalavakkam, Chennai, 603 110, Tamilnadu, India
| | - Prasath Manivannan
- Department of Physics, Periyar University PG Extension Centre, Dharmapuri, 636 701, Tamilnadu, India
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12
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Abdizadeh R, Hadizadeh F, Abdizadeh T. Evaluation of apigenin-based biflavonoid derivatives as potential therapeutic agents against viral protease (3CLpro) of SARS-CoV-2 via molecular docking, molecular dynamics and quantum mechanics studies. J Biomol Struct Dyn 2022:1-31. [PMID: 35848354 DOI: 10.1080/07391102.2022.2098821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is the causative agent of the pandemic COVID-19 disease that affects human respiratory function. Despite the scientific progression made in the development of the vaccine, there is an urgent need for the discovery of antiviral drugs for better performance at different stages of SARS-CoV-2 reproduction. The main protease (Mpro or 3CLpro) plays a pivotal role in the life cycle of the virus, making it an attractive target for the development of antiviral agents effective against the new strains of coronaviruses (CoVs). In this study, a series of apigenin-based natural biflavonoid derivatives as potential inhibitors of coronaviruses 3CLpro was investigated by in silico approaches. For this purpose, the molecular docking was performed to analyze the interaction of the natural biflavonoids with SARS-Cov-2 main protease and for further investigation, docking to the 3CLpro of SARS-CoV and MERS-CoV. Based on docking scores and comparison with the reference inhibitors (ritonavir and lopinavir), more than half of the biflavonoids had strong interactions with the residues of the binding pocket of the coronaviruses 3CLpro and exhibited better binding affinities toward the main protease than ritonavir and lopinavir. The top biflavonoids were further explored through molecular dynamics simulation, binding free energy calculation and residual energy contributions estimated by the MM-PBSA. Also, drug likeness property investigation by Swiss ADME tools and density functional theory (DFT) calculations were performed. The results confirmed that the 3CLpro-amentoflavone, 3CLpro-bilobetin, 3CLpro-ginkgetin, and 3CLpro-sotetsuflavone complexes possess a large amount of dynamic properties such as high stability, significant binding energy and fewer conformation fluctuations. Also, the pharmacokinetics and drug-likeness studies and HOMO-LUMO and DFT descriptor values indicated a promising result of the selected natural biflavonoids. Overall findings indicate that the apigenin-based biflavonoids may inhibit COVID-19 by significant interactions in the binding pocket and those results can pave the way in drug discovery although the effectiveness of these bioactive compounds should be further validated by in-vitro and in-vivo investigations. Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Rahman Abdizadeh
- Department of Medical Parasitology and Mycology, Faculty of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Farzin Hadizadeh
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Tooba Abdizadeh
- Clinical Biochemistry Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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13
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Amin SA, Kumar J, Khatun S, Das S, Qureshi IA, Jha T, Gayen S. Binary quantitative activity-activity relationship (QAAR) studies to explore selective HDAC8 inhibitors: In light of mathematical models, DFT-based calculation and molecular dynamic simulation studies. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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14
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Synthesis, vibrational analysis, molecular property investigation, and molecular docking of new benzenesulphonamide-based carboxamide derivatives against Plasmodium falciparum. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133796] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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15
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Singh I, Srivastava R, Shukla VK, Pathak SK, Burman T, Al-Mutairi AA, El-Emam AA, Prasad O, Sinha L. Spectroscopic, electronic structure, molecular docking, and molecular dynamics simulation study of 7-Trifluoromethyl-1H-indole-2-carboxylic acid as an aromatase inhibitor. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 280:121530. [PMID: 35752037 DOI: 10.1016/j.saa.2022.121530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/12/2022] [Accepted: 06/16/2022] [Indexed: 10/31/2022]
Abstract
The present work encompasses a combined experimental and theoretical investigation of the molecular structure, vibrational wavenumbers, electronic structure at the ground and electronic excited states, molecular electrostatic potential surface of 7-(Trifluoromethyl)-1H-indole-2-carboxylic acid (TICA) and possibility of the title molecule as an aromatase inhibitor using molecular docking and molecular dynamic simulations. A stable conformer has been obtained using potential energy scans by varying appropriate dihedral angles. The obtained minimum energy conformer was further optimized at the 6-311++G (d, p) basis set by applying the most accepted B3LYP functional. A good agreement between experimental and calculated normal modes of vibration has been observed. The hydrogen-bonded interaction between two monomeric units of TICA has been investigated using NBO,QTAIM, and NCI (noncovalent interactions) analysis. Molecular docking of TICA with human placental aromatase (PDB ID: 3S79) reveals the formation of polar hydrogen bonds as well as hydrophobic interactions between the ligand and the protein, right in the binding cavity. TICA satisfies all pharmacokinetic filters (Lipinski rule of five, the Veber rule, Ghose rule, Egan rule, as well as the Muegge rule) and has a high bioavailability score of 0.85. Dynamic stability of the ligand within the binding pocket of the target protein has been confirmed by 100 ns molecular dynamics simulation results. The present study provides an excellent starting point for additional in vivo research, and TICA may eventually serve as a significant therapeutic candidate for the treatment of breast cancer.
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Affiliation(s)
- Isha Singh
- Department of Physics, University of Lucknow, 226007 Lucknow, India
| | - Ruchi Srivastava
- Department of Physics, University of Lucknow, 226007 Lucknow, India
| | - Vikas K Shukla
- Department of Physics, Maharishi University of Information Technology Lucknow, Uttar Pradesh, India
| | - Shilendra K Pathak
- Department of Physics, M. M. M. P. G. College, Bhatpar Rani, Deoria, India
| | | | - Aamal A Al-Mutairi
- Department of Chemistry, College of Sciences, Imam Mohammad lbn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Ali A El-Emam
- Department of Medicinal Chemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Onkar Prasad
- Department of Physics, University of Lucknow, 226007 Lucknow, India
| | - Leena Sinha
- Department of Physics, University of Lucknow, 226007 Lucknow, India.
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Basak HK, Saha S, Ghosh J, Paswan U, Karmakar S, Pal A, Chatterjee A. Sequence Analysis, Structure Prediction of Receptor Proteins and In Silico
Study of Potential Inhibitors for Management of Life Threatening
COVID-19. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180818666210804141613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Treatment of the Covid-19 pandemic caused by the highly contagious and
pathogenic SARS-CoV-2 is a global menace. Day by day, this pandemic is getting worse. Doctors,
scientists and researchers across the world are urgently scrambling for a cure for novel corona virus
and continuously working at break neck speed to develop vaccines or drugs. But to date, there
are no specific drugs or vaccines available in the market to cope up with the virus.
Objective:
The present study helps us to elucidate 3D structures of SARS-CoV-2 proteins and also
to identify natural compounds as potential inhibitors against COVID-19.
Methods:
The 3D structures of the proteins were constructed using Modeller 9.16 modeling tool.
Modelled proteins were validated with PROCHECK by Ramachandran plot analysis. In this study,
a small library of natural compounds (fifty compounds) was docked to the hACE2 binding site of
the modelled surface glycoprotein of SARS-CoV-2 using AutoDock Vina to repurpose these inhibitors
against SARS-CoV-2. Conceptual density functional theory calculations of the best eight
compounds had been performed by Gaussian-09. Geometry optimizations for these molecules were
done at M06-2X/ def2-TZVP level of theory. ADME parameters, pharmacokinetic properties and
drug likeness of the compounds were analyzed using swissADME website.
Results:
In this study, we analysed the sequences of surface glycoprotein, nucleocapsid phosphoprotein
and envelope protein obtained from different parts of the globe. We modelled all the different
sequences of surface glycoprotein and envelop protein in order to derive 3D structure of a molecular
target, which is essential for the development of therapeutics. Different electronic properties
of the inhibitors have been calculated using DFT through M06-2X functional with def2-TZVP
basis set. Docking result at the hACE2 binding site of all modelled surface glycoproteins of SARSCoV-
2 showed that all the eight inhibitors (actinomycin D, avellanin C, ichangin, kanglemycin A,
obacunone, ursolic acid, ansamiotocin P-3 and isomitomycin A) studied here were many folds
better compared to hydroxychloroquine which has been found to be effective to treat patients suffering
from COVID-19. All the inhibitors meet most of the criteria of drug likeness assessment.
Conclusion:
We expect that eight compounds (actinomycin D, avellanin C, ichangin, kanglemycin
A, obacunone, ursolic acid, ansamiotocin P-3 and isomitomycin A) can be used as potential inhibitors
against SARS-CoV-2.
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Affiliation(s)
- Hriday Kumar Basak
- In silico Chemical Laboratory, Department of Chemistry, Raiganj University, Raiganj, West Bengal, India
| | - Soumen Saha
- Graduate School of Informatics, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Joydeep Ghosh
- In silico Chemical Laboratory, Department of Chemistry, Raiganj University, Raiganj, West Bengal, India
| | - Uttam Paswan
- In silico Chemical Laboratory, Department of Chemistry, Raiganj University, Raiganj, West Bengal, India
| | - Sujoy Karmakar
- In silico Chemical Laboratory, Department of Chemistry, Raiganj University, Raiganj, West Bengal, India
| | - Ayon Pal
- Microbiology & Computational
Biology Laboratory, Department of Botany, Raiganj University, Raiganj, West Bengal, India
| | - Abhik Chatterjee
- In silico Chemical Laboratory, Department of Chemistry, Raiganj University, Raiganj, West Bengal, India
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Rizk MG, Emara AA, Mahmoud NH. Spectroscopic studies, DFT calculations, thermal analysis, anti-cancer evaluation of new metal complexes of 2-hydroxy-N-(4-phenylthiazol-2-yl)benzamide. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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18
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Tice RR, Bassan A, Amberg A, Anger LT, Beal MA, Bellion P, Benigni R, Birmingham J, Brigo A, Bringezu F, Ceriani L, Crooks I, Cross K, Elespuru R, Faulkner DM, Fortin MC, Fowler P, Frericks M, Gerets HHJ, Jahnke GD, Jones DR, Kruhlak NL, Lo Piparo E, Lopez-Belmonte J, Luniwal A, Luu A, Madia F, Manganelli S, Manickam B, Mestres J, Mihalchik-Burhans AL, Neilson L, Pandiri A, Pavan M, Rider CV, Rooney JP, Trejo-Martin A, Watanabe-Sailor KH, White AT, Woolley D, Myatt GJ. In Silico Approaches In Carcinogenicity Hazard Assessment: Current Status and Future Needs. COMPUTATIONAL TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 20. [PMID: 35368437 DOI: 10.1016/j.comtox.2021.100191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Historically, identifying carcinogens has relied primarily on tumor studies in rodents, which require enormous resources in both money and time. In silico models have been developed for predicting rodent carcinogens but have not yet found general regulatory acceptance, in part due to the lack of a generally accepted protocol for performing such an assessment as well as limitations in predictive performance and scope. There remains a need for additional, improved in silico carcinogenicity models, especially ones that are more human-relevant, for use in research and regulatory decision-making. As part of an international effort to develop in silico toxicological protocols, a consortium of toxicologists, computational scientists, and regulatory scientists across several industries and governmental agencies evaluated the extent to which in silico models exist for each of the recently defined 10 key characteristics (KCs) of carcinogens. This position paper summarizes the current status of in silico tools for the assessment of each KC and identifies the data gaps that need to be addressed before a comprehensive in silico carcinogenicity protocol can be developed for regulatory use.
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Affiliation(s)
- Raymond R Tice
- RTice Consulting, Hillsborough, North Carolina, 27278, USA
| | | | - Alexander Amberg
- Sanofi Preclinical Safety, Industriepark Höchst, 65926 Frankfurt, Germany
| | - Lennart T Anger
- Genentech, Inc., South San Francisco, California, 94080, USA
| | - Marc A Beal
- Healthy Environments and Consumer Safety Branch, Health Canada, Government of Canada, Ottawa, Ontario, Canada K1A 0K9
| | | | | | - Jeffrey Birmingham
- GlaxoSmithKline, David Jack Centre for R&D, Ware, Hertfordshire, SG12 0DP, United Kingdom
| | - Alessandro Brigo
- Roche Pharmaceutical Research & Early Development, Pharmaceutical Sciences, Roche Innovation, Center Basel, F. Hoffmann-La Roche Ltd, CH-4070, Basel, Switzerland
| | | | - Lidia Ceriani
- Humane Society International, 1000 Brussels, Belgium
| | - Ian Crooks
- British American Tobacco (Investments) Ltd, GR&D Centre, Southampton, SO15 8TL, United Kingdom
| | | | - Rosalie Elespuru
- Food and Drug Administration, Center for Devices and Radiological Health, Silver Spring, Maryland, 20993, USA
| | - David M Faulkner
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
| | - Marie C Fortin
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, New Jersey, 08855, USA
| | - Paul Fowler
- FSTox Consulting (Genetic Toxicology), Northamptonshire, United Kingdom
| | | | | | - Gloria D Jahnke
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, 27709, USA
| | | | - Naomi L Kruhlak
- Food and Drug Administration, Center for Drug Evaluation and Research, Silver Spring, Maryland, 20993, USA
| | - Elena Lo Piparo
- Chemical Food Safety Group, Nestlé Research, CH-1000 Lausanne 26, Switzerland
| | - Juan Lopez-Belmonte
- Cuts Ice Ltd Chemical Food Safety Group, Nestlé Research, CH-1000 Lausanne 26, Switzerland
| | - Amarjit Luniwal
- North American Science Associates (NAMSA) Inc., Minneapolis, Minnesota, 55426, USA
| | - Alice Luu
- Healthy Environments and Consumer Safety Branch, Health Canada, Government of Canada, Ottawa, Ontario, Canada K1A 0K9
| | - Federica Madia
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Serena Manganelli
- Chemical Food Safety Group, Nestlé Research, CH-1000 Lausanne 26, Switzerland
| | | | - Jordi Mestres
- IMIM Institut Hospital Del Mar d'Investigacions Mèdiques and Universitat Pompeu Fabra, Doctor Aiguader 88, Parc de Recerca Biomèdica, 08003 Barcelona, Spain; and Chemotargets SL, Baldiri Reixac 4, Parc Científic de Barcelona, 08028, Barcelona, Spain
| | | | - Louise Neilson
- Broughton Nicotine Services, Oak Tree House, Earby, Lancashire, BB18 6JZ United Kingdom
| | - Arun Pandiri
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, 27709, USA
| | | | - Cynthia V Rider
- Division of the National Toxicology Program, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, 27709, USA
| | - John P Rooney
- Integrated Laboratory Systems, LLC., Morrisville, North Carolina, 27560, USA
| | | | - Karen H Watanabe-Sailor
- School of Mathematical and Natural Sciences, Arizona State University, West Campus, Glendale, Arizona, 85306, USA
| | - Angela T White
- GlaxoSmithKline, David Jack Centre for R&D, Ware, Hertfordshire, SG12 0DP, United Kingdom
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K. S, T.N. MM, P. MR, Asiri AM, Sobahi TR, Asad M. Comparative Green and Conventional Synthesis of 2-Hydroxy-1-Naphthaldehyde Based Barbiturates and Their DFT Study. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1982735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Snigdha K.
- Research & Postgraduate Department of Chemistry, MES Kalladi College, Mannarkkad (Affiliated to University of Calicut), Kerala, India
| | - Mohammed Musthafa T.N.
- Research & Postgraduate Department of Chemistry, MES Kalladi College, Mannarkkad (Affiliated to University of Calicut), Kerala, India
| | - Mohammed Rashad P.
- Research & Postgraduate Department of Chemistry, MES Kalladi College, Mannarkkad (Affiliated to University of Calicut), Kerala, India
| | - Abdullah M. Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tariq R. Sobahi
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mohammad Asad
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
- Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, Jeddah, Saudi Arabia
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Srivastava R. Theoretical Studies on the Molecular Properties, Toxicity, and Biological Efficacy of 21 New Chemical Entities. ACS OMEGA 2021; 6:24891-24901. [PMID: 34604670 PMCID: PMC8482469 DOI: 10.1021/acsomega.1c03736] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Indexed: 05/10/2023]
Abstract
New chemical entities (NCEs) such as small molecules and antibody-drug conjugates have strong binding affinity for biological targets, which provide deep insights into structure-specific interactions for the design of future drugs. As structures of drugs increase in complexity, the importance of computational predictions comes into sharp focus. Knowledge of various computational tools enables us to predict the molecular properties, toxicity, and biological efficacy of the drugs and help the medicinal chemists to discover new drugs more efficiently. Newly approved drugs have higher affinities for proteins and nucleic acids and are applied for the treatment of human diseases. We have carried out the computational studies of 21 such NCEs, specifically small molecules and antibody-drug conjugates, and studied the biological efficacy of these drugs. Their bioactivity score and molecular and pharmacokinetic properties were evaluated using online computer software programs, viz., Molinspiration and Osiris Property Explorer. The SwissTargetPrediction tool was used for the efficient prediction of protein targets for the NCEs. The results indicated higher stability for the drug complexes due to a larger HOMO-LUMO gap. A high electrophilicity index reflects good electrophilic behavior and high reactivity of the drugs. Lipinski's ''rule of five'' indicated that most of the drug complexes are likely to be orally active. These drugs also showed non-mutagenic, non-tumorigenic, non-irritant, and non-effective reproductive behavior. We hope that these studies will provide an insight into molecular recognition and definitely help the medicinal chemists to design new drugs in future.
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21
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Zouchoune B. Theoretical investigation on the biological activities of ginger and some of its combinations: an overview of the antioxidant activity. Struct Chem 2021. [DOI: 10.1007/s11224-021-01725-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Gholivand K, Sabaghian M, Eshaghi Malekshah R. Synthesis, characterization, cytotoxicity studies, theoretical approach of adsorptive removal and molecular calculations of four new phosphoramide derivatives and related graphene oxide. Bioorg Chem 2021; 115:105193. [PMID: 34339976 DOI: 10.1016/j.bioorg.2021.105193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/26/2021] [Accepted: 07/17/2021] [Indexed: 01/05/2023]
Abstract
In this study, four novel phosphoramide ligands (L1-L4) are synthesized and characterized by 31PNMR, 1HNMR, MASS, and FT-IR spectroscopies. In vitro cell growth inhibition is studied by the MTT assay to evaluate the cytotoxicity of ligands against MCF-7 cell line; the result of the assay demonstrates that all ligands significantly suppress the proliferation of breast cancer cells in a concentration-dependent manner. The calculated IC50 values are in the range of 3.6-10.77 µg ml-1, of which the lowest value is attributed to L1. Then a facile approach was developed to functionalize graphene oxide (GO) surface by L1. The data which are obtained by XRD, FT-IR, and EDX analysis confirmed the deposition of phosphoramide on the surface of GO. The cell viability of GO-L1 compound at different concentrations is investigated in 24 h experiment. Excellent synergistic antitumor effects of GO and L1 lead to a decrease in IC50 value up to 2.13 μg ml-1. The Quantum calculations of compounds are used to study energies and HOMO and LUMO values, dipole moments (µ), global hardness (η), global softness (σ), and electrophilicity index (ω) using DMol3 module in Material studio2017. The docking calculations are performed to describe the mode of the binding to DNA and DNA polymerase IIα. Adsorption calculations of ligands (L1-L4) on GO sheet in the presence of water showed that L1 and L2 were located on GO via π electrons of anisole ring. While, L3 and L4 were located on GO by π - π interactions of aniline ring.
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Affiliation(s)
- Khodayar Gholivand
- Department of Chemistry, Faculty of Science, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Marzie Sabaghian
- Department of Chemistry, Faculty of Science, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Rahime Eshaghi Malekshah
- Medical Biomaterial Research Centre (MBRC), Tehran University of Medical Sciences, Tehran, Iran.
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23
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Molski M. Theoretical modeling of structure-toxicity relationship of cyanides. Toxicol Lett 2021; 349:30-39. [PMID: 34089818 DOI: 10.1016/j.toxlet.2021.05.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 05/31/2021] [Indexed: 01/15/2023]
Abstract
The global descriptors of chemical activity: ionization potential IP, electron affinity EA, chemical potential μ, absolute electronegativity χ, molecular hardness η and softness S, electrophilicity index ω for cyanides X(CN)k with X=H, Na, K, Ag, Cu, Ca, Hg, Cd, Zn in the gas phase and water medium have been determined by taking advantage of the quantum-chemical computations. To this aim, the HOMO and LUMO energy levels were calculated using DFT B3LYP method and QZVP (Valence Quadruple-Zeta Polarization) basis set, which enables precise calculations for hydrogen cyanide and its salts containing both light (H, Na, Ca) and heavy (K, Ag, Cu, Cd, Hg, Zn) atoms. The results obtained indicate that while the EA-parameter roughly determines the LD50 values for the cyanides considered, the ω-descriptor is related rather to the product of cyanide LD50 and hydrolysis n-degree. Hence, the theoretical LD50CN(ω) function proposed is interconnected with the n⸳LD50 collective variable, whereas LD50(EA) directly approximates LD50 values indicating that the toxicity of cyanides decreases with increasing EA, ω-values. The calculations carried out suggest that some of the LD50(Exp) experimentally determined are incorrect (AgCN) or inaccurate (Cd(CN)2) and require revision. Comparison of the theoretically estimated LD50(ω) with NOAEL toxicity parameters indicates that they are well correlated in contrast to LD50(EA) and LD50(Exp), exhibiting lower and marginal degrees of correlation, respectively.
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Affiliation(s)
- Marcin Molski
- Quantum Chemistry Department, Faculty of Chemistry, Adam Mickiewicz University of Poznań, ul. Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.
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Chakraborty D, Chattaraj PK. Conceptual density functional theory based electronic structure principles. Chem Sci 2021; 12:6264-6279. [PMID: 34084424 PMCID: PMC8115084 DOI: 10.1039/d0sc07017c] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 03/10/2021] [Indexed: 12/20/2022] Open
Abstract
In this review article, we intend to highlight the basic electronic structure principles and various reactivity descriptors as defined within the premise of conceptual density functional theory (CDFT). Over the past several decades, CDFT has proven its worth in providing valuable insights into various static as well as time-dependent physicochemical problems. Herein, having briefly outlined the basics of CDFT, we describe various situations where CDFT based reactivity theory could be employed in order to gain insights into the underlying mechanism of several chemical processes.
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Affiliation(s)
- Debdutta Chakraborty
- Department of Chemistry, KU Leuven Celestijnenlaan 200F-2404 3001 Leuven Belgium
| | - Pratim Kumar Chattaraj
- Department of Chemistry, Indian Institute of Technology Kharagpur 721302 West Bengal India +91 3222 255303 +91 3222 283304
- Department of Chemistry, Indian Institute of Technology Bombay Powai Mumbai 400076 India
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Probing the structural properties, binding mode and intermolecular interactions of herbacetin against H1N1 neuraminidase using vibrational spectroscopic, quantum chemical calculation and molecular docking studies. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04408-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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26
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Gholivand K, Roshanian Z, Rahimzadeh Dashtaki M, Hosseini Z, Ebrahimi Valmoozi AA, Sharifi M, Mohammadpanah F, Rajabi M, Ghadamyari M, Farshadian S, Hasan Sajedi R, Khajeh K, Akbari N. Monophosphoramide derivatives: synthesis and crystal structure, theoretical and experimental studies of their biological effects. Mol Divers 2021; 26:97-112. [PMID: 33387185 DOI: 10.1007/s11030-020-10160-9] [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: 11/02/2019] [Accepted: 11/20/2020] [Indexed: 10/22/2022]
Abstract
Synthesizing new chemical compounds and studying their biological applications have been important issues in scientific research. In this investigation, we synthesized and characterized ten new N-acetyl phosphoramidate compounds and explored the crystal structure of three others. Furthermore, not only were some kinetic inhibition parameters measured, like IC50, Ki, kp, KD for 7 compounds on human acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), but also their hydrophobic parameter was determined by shake-flask technique. All compounds (number 1-10) were investigated for anti-bacterial activity against three Gram-positive and three Gram-negative bacteria, while chloramphenicol was used as a standard antibiotic. In order to find new insecticide, toxicities of 13 acephate (Ace)-derived compounds (number 20-32) were bioassayed on third larval instar of elm leaf beetle and Xanthogaleruca luteola. Additionally, screening in vivo tests revealed that two compounds had had the greatest insecticidal potential in comparison with others. It means these ones inhibited AChE (with mixed mechanisms) and general esterase more than the rest. According to ChE-QSAR models, the inhibitory potency for enzyme and bacteria is directly influenced by the electronic parameters versus structural descriptors. AChE-QSPR model of fluorescence assay indicated that the inhibitory power of AChE is primarily influenced by a set of electronic factors with the priority of: EHB > PL > δ(31P) versus structural descriptor (SA and Mv). Synthesizing new chemical compounds and studying their biological applications have been important issues in scientific research. Toxicities of 13 acephate (Ace)-derived compounds (number 20-32) were bioassayed on third larval instar of elm leaf beetle and Xanthogaleruca luteola. Insect-QSAR equations of these compounds, based on MLR and PCA, showed that non-descriptor net charge nitrogen atom (which was affected by the polarization of N-H group) had the greatest effect on insecticidal potential.
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Affiliation(s)
| | - Zahra Roshanian
- Department of Chemistry, Tarbiat Modares University, Tehran, Iran
| | | | - Zahra Hosseini
- Department of Chemistry, Tarbiat Modares University, Tehran, Iran
| | | | | | | | - Maryam Rajabi
- Department of Chemistry, Tarbiat Modares University, Tehran, Iran
| | | | | | | | - Khosro Khajeh
- Department of Chemistry, Tarbiat Modares University, Tehran, Iran
| | - Neda Akbari
- Department of Chemistry, Tarbiat Modares University, Tehran, Iran
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27
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Synthesis, structure elucidation and dft study of a new thiazole–pyridine anchored nnn donor and it's cobalt(II) complex: In-vitro antitumor activity against U937 cancer cells, dna binding property and molecular docking study. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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28
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Karoui S, Chouaib H, Kamoun S. Synthesis, X-ray powder diffraction study, thermal analysis, Hirshfeld surface analysis and optical properties of new crystalline polymer: {(C2H10N2)(MnCl(NCS)2)2}n. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.128993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Green Synthesis, SC-XRD, Non-Covalent Interactive Potential and Electronic Communication via DFT Exploration of Pyridine-Based Hydrazone. CRYSTALS 2020. [DOI: 10.3390/cryst10090778] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Ultrasound-based synthesis at room temperature produces valuable compounds greener and safer than most other methods. This study presents the sonochemical fabrication and characterization of a pyridine-based halogenated hydrazone, (E)-2-((6-chloropyridin-2-yl)oxy)-N′-(2-hydroxybenzylidene) acetohydrazide (HBPAH). The NMR spectroscopic technique was used to determine the structure, while SC-XRD confirmed its crystalline nature. Our structural studies revealed that strong, inter-molecular attractive forces stabilize this crystalline organic compound. Moreover, the compound was optimized at the B3LYP/6-311G(d,p) level using the Crystallographic Information File (CIF). Natural bonding orbital (NBO) and natural population analysis (NPA) were performed at the same level using optimized geometry. Time-dependent density functional theory (DFT) was performed at the B3LYP/6-311G (d,p) method to calculate the frontier molecular orbitals (FMOs) and molecular electrostatic potential (MEP). The global reactivity descriptors were determined using HOMO and LUMO energy gaps. Theoretical calculations based on the Quantum Theory of Atoms in Molecules (QT-AIM) and Hirshfeld analyses identified the non-covalent and covalent interactions of the HBPAH compound. Consequently, QT-AIM and Hirshfeld analyses agree with experimental results.
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Zouchoune B. How the ascorbic acid and hesperidin do improve the biological activities of the cinnamon: theoretical investigation. Struct Chem 2020; 31:2333-2340. [PMID: 32837117 PMCID: PMC7361000 DOI: 10.1007/s11224-020-01594-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 07/10/2020] [Indexed: 10/29/2022]
Abstract
DFT/B3LYP calculations have been performed on series of molecules of natural products containing cinnamon and citrus, namely, cinnamic aldehyd, ascorbic acid and hesperidin. This theoretical investigation predicts the biological activities of mixtures between cinnamon and ascorbic acid and between cinnamon and hesperidin based on already proven values for these molecules. The strength of the intermolecular interactions is evaluated in term of energy decomposition of the total interaction energy ΔE int between molecules, which are mainly governed by electrostatic interactions. The HOMO-LUMO gaps explain that the possible charge transfer interactions that take place within the molecules are responsible for the molecular reactivity of the studied molecules. The chemical hardness, the chemical potential and the electrophilicity indexes are good indicators for biological activities showing their improvement to that of cinnamon itself. The mixture of hesperidin and cinnamon could be an excellent blood thinner with the regard to its polarity's enhancement.
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Affiliation(s)
- Bachir Zouchoune
- Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, Université de Constantine (Mentouri), 25000 Constantine, Algeria.,Laboratoire de Chimie Appliquée et Technologie des Matériaux, Université Larbi Ben M'hidi Oum el Bouaghi, 04000 Oum El Bouaghi, Algeria
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Saouli S, Selatnia I, Zouchoune B, Sid A, Zendaoui SM, Bensouici C, Bendeif EE. Synthesis, spectroscopic characterization, crystal structure, DFT studies and biological activities of new hydrazone derivative: 1-(2,5-bis((E)-4-isopropylbenzylidene)cyclopentylidene)-2-(2,4-dinitrophenyl) hydrazine. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128203] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Sathya B, Karthi S, Ajaijawahar K, Prasath M. Probing the vibrational spectroscopic properties and binding mechanism of anti-influenza agent Liquiritin using experimental and computational studies. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04216-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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33
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Haruna K, Kumar VS, Armaković SJ, Armaković S, Mary YS, Thomas R, Popoola SA, Almohammedi AR, Roxy MS, Al-Saadi AA. Spectral characterization, thermochemical studies, periodic SAPT calculations and detailed quantum mechanical profiling various physico-chemical properties of 3,4-dichlorodiuron. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117580. [PMID: 31748158 DOI: 10.1016/j.saa.2019.117580] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 09/16/2019] [Accepted: 09/28/2019] [Indexed: 06/10/2023]
Abstract
A set of experimental and computational techniques have been applied for the understanding of fundamental spectroscopic and reactive properties of 3-(3,4-dichlorophenyl)-1,1-dimethylurea (diuron) compound. Experimental techniques employed in this study encompassed spectroscopic characterization via IR and Raman approaches, while optical properties were studied by measurements of UV/Vis spectra. The thermogravimetric analysis was also studied in order to analyze the stability of diuron. Aside from the determination of reactive properties, DFT calculations on isolated molecules were also used to thoroughly visualize and analyze spectroscopic properties such as IR and UV/Vis. MD simulations were used in order to understand interactions with water, while periodic DFT calculations were used in order to analyze band structure and density of states of the diuron crystal structure. Since the crystal structure of diuron is known, it was used in order to extract the relevant molecular pairs and investigate interactions between them by DFT and symmetry adapted perturbation theory approaches (SAPT).
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Affiliation(s)
- K Haruna
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
| | - Veena S Kumar
- Department of Physics, SN College, Kollam, Kerala, India; Research Centre, University of Kerala, Kerala, India
| | - Sanja J Armaković
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg D. Obradovića 3, 21000, Novi Sad, Serbia
| | - Stevan Armaković
- University of Novi Sad, Faculty of Sciences, Department of Physics, Trg D. Obradovića 4, 21000, Novi Sad, Serbia
| | - Y Sheena Mary
- Department of Physics, Fatima Mata National College(Autonomous), Kollam, Kerala, India
| | - Renjith Thomas
- Department of Chemistry, St. Berchmans College (Autonomous), Changanassery, 686101, Kerala, India.
| | - Saheed A Popoola
- Department of Chemistry, Islamic University of Madinah, Saudi Arabia
| | - A R Almohammedi
- Department of Physics, Islamic University of Madinah, Saudi Arabia
| | - M S Roxy
- Department of Physics, SN College, Kollam, Kerala, India
| | - A A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
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Sugimoto M, Manggara AB, Yoshida K, Inoue T, Ideo T. An Electronic-structure Informatics Study on the Toxicity of Alkylphenols to Tetrahymena pyriformis. Mol Inform 2020; 39:e1900121. [PMID: 31930704 DOI: 10.1002/minf.201900121] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 11/18/2019] [Indexed: 01/29/2023]
Abstract
Alkylphenols (APs) dissolved in water are known to be toxic to animals including humans. In this study, regression models describing the toxicity of the 33 AP molecules were investigated for reproducing and thereby making it possible to predict a quantitative structure-activity relationship (QSAR). For this purpose, we tried to derive regression models for the experimental IGC50 (growth inhibition concentration at 50 %) to Tetrahymena pyriformis by using various descriptor sets consisting of electronic and shape descriptors. By applying the multiple linear regression (MLR) analysis, it was successful to derive a quantitative regression model for the IGC50 values. In this analysis, the size parameters of the molecules were found important, suggesting that bulky molecules should be less toxic. We could also obtain, when the size descriptors were excluded, an MLR model indicating that the electron affinity (EA) should be important, which is consistent with the previous QSAR studies. Through the correlation analysis among the descriptors, it was shown that, in the present set of molecules, EA and a size parameter are highly correlated. Since EA was calculated to be negative, indicating that the related process would be energetically unfavourable, it was concluded that the size of the molecules should be a dominant factor determining IGC50 . This implies that a molecular recognition process would play a critical role in the mode of action for the toxicity.
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Affiliation(s)
- Manabu Sugimoto
- Faculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, 860-8555, Kumamoto, Japan.,Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, 860-8555, Kumamoto, Japan
| | - Algafari Bakti Manggara
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, 860-8555, Kumamoto, Japan
| | - Kazuki Yoshida
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, 860-8555, Kumamoto, Japan
| | - Takafumi Inoue
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, 860-8555, Kumamoto, Japan
| | - Toshihiro Ideo
- Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, 860-8555, Kumamoto, Japan
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35
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Sheena Mary Y, Ertan-Bolelli T, Thomas R, Krishnan AR, Bolelli K, Kasap EN, Onkol T, Yildiz I. Quantum Mechanical Studies of Three Aromatic Halogen-Substituted Bioactive Sulfonamidobenzoxazole Compounds with Potential Light Harvesting Properties. Polycycl Aromat Compd 2019. [DOI: 10.1080/10406638.2019.1689405] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Y. Sheena Mary
- Department of Physics, Fatima Mata National College (Autonomous), Kollam, Kerala, India
| | - Tugba Ertan-Bolelli
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara University, Yenimahalle, Ankara, Turkey
| | - Renjith Thomas
- Department of Chemistry, St. Berchmans College (Autonomous), Changanassery, Kerala, India
| | - Akhil R. Krishnan
- Department of Physics, Malabar Christian College, Kozhikode, Kerala, India
| | - Kayhan Bolelli
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara University, Yenimahalle, Ankara, Turkey
| | - Esin Nagihan Kasap
- Faculty of Pharmacy, Department of Basic Sciences, Gazi University, Ankara, Turkey
| | - Tijen Onkol
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Gazi University, Ankara, Turkey
| | - Ilkay Yildiz
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara University, Yenimahalle, Ankara, Turkey
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36
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A model of atomic compressibility and its application in QSAR domain for toxicological property prediction. J Mol Model 2019; 25:303. [PMID: 31493097 DOI: 10.1007/s00894-019-4199-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 08/28/2019] [Indexed: 12/18/2022]
Abstract
A model for computing the atomic compressibility (β) based on two periodic descriptors, namely, absolute radius (r) and atomic electrophilicity index (ω), is proposed as[Formula: see text]The ansatz is invoked to compute compressibilities of atoms of 57 elements of the periodic table. The computed atomic data exhibits all sine qua non of periodic properties. Further, the concept group compressibility (Gβ) is also established invoking additivity property using some molecules with different functional groups and consequently utilized in correlating with molecular polarizability. Since toxicity prediction is an imperative need of the hour, chemical reactivity descriptors are of paramount importance in the study of toxicological behaviour along with a lot of other molecular reactivity studies within a Quantitative Structure-Activity Relationship (QSAR) context. Hence, this quantity is applied in the modelling of toxicological property through QSAR and a comprehensive study is performed in an effort to investigate and validate the application of compressibility in determining its toxicological power. Consequently, varied 209 organic molecules are selected for studying the toxic effect on Tetrahymena pyriformis. A QSAR model is constructed in terms of compressibility which offers a superior prediction of toxicity independently without adopting additional descriptors or properties as in some other QSAR studies. Graphical abstract.
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37
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Roy SM, Sharma BK, Roy DR. Biological activity of some ACAT inhibitors in the light of DFT-based quantum descriptors. Struct Chem 2019. [DOI: 10.1007/s11224-019-01348-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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38
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3D-QSAR and molecular docking studies of aminopyrimidine derivatives as novel three-targeted Lck/Src/KDR inhibitors. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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39
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Karthikeyan S, Zalte RR, Festa AA, Voskressensky LG. Understanding the Binding Mechanism of a Pyrazino[1,2‐a]indole Derivative with Calf Thymus DNA. ChemistrySelect 2019. [DOI: 10.1002/slct.201803838] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Subramani Karthikeyan
- Department of Organic ChemistryScience FacultyPeoples' Friendship University of Russia (RUDN University) Miklukho-Maklaya St.,6 Moscow Russia 117198
| | - Rajesh R. Zalte
- Department of Organic ChemistryScience FacultyPeoples' Friendship University of Russia (RUDN University) Miklukho-Maklaya St.,6 Moscow Russia 117198
| | - Alexey A. Festa
- Department of Organic ChemistryScience FacultyPeoples' Friendship University of Russia (RUDN University) Miklukho-Maklaya St.,6 Moscow Russia 117198
| | - Leonid G. Voskressensky
- Department of Organic ChemistryScience FacultyPeoples' Friendship University of Russia (RUDN University) Miklukho-Maklaya St.,6 Moscow Russia 117198
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40
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Karthikeyan S, Bharanidharan G, Ragavan S, Kandasamy S, Chinnathambi S, Udayakumar K, Mangaiyarkarasi R, Suganya R, Aruna P, Ganesan S. Exploring the Binding Interaction Mechanism of Taxol in β-Tubulin and Bovine Serum Albumin: A Biophysical Approach. Mol Pharm 2019; 16:669-681. [PMID: 30601011 DOI: 10.1021/acs.molpharmaceut.8b00948] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
In this present study on understanding the taxol (PTX) binding interaction mechanism in both the β-tubulin and bovine serum albumin (BSA) molecule, various optical spectroscopy and computational techniques were used. The fluorescence steady-state emission spectroscopy result suggests that there is a static quenching mechanism of the PTX drug in both β-tubulin and BSA, and further time-resolved emission spectroscopy studies confirm that the quenching mechanism exists. The excitation-emission matrix (EEM), Fourier transform infrared, and resonance light scattering spectra (FT-IR) confirm that there are structural changes in both the BSA and β-tubulin molecule during the binding process of PTX. The molecular docking studies revealed the PTX binding information in BSA, β-tubulin, and modeled β-tubulin and the best binding pose to further subject the molecular dynamics simulation, and this study confirms the stability of PTX in the protein complex during the simulation. Density functional theory (DFT) calculations were performed between the free PTX drug and PTX drug (single point) in the protein molecule active site region to understand the internal stability.
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Affiliation(s)
- Subramani Karthikeyan
- Department of Medical Physics , Anna University , Chennai 600 025 , India.,Department of Organic Chemistry, Science Faculty, Peoples' Friendship , University of Russia (RUDN University) , Mikluho Maklaya St. 6 , Moscow 117198 , Russia
| | | | - Sriram Ragavan
- Centre of Advanced Study in Crystallography and Biophysics , University of Madras , Chennai 600 025 , India
| | | | - Shanmugavel Chinnathambi
- International Center for Young Scientists , National Institute for Materials Science (NIMS) , 1-2-1 Sengen , Tsukuba , Ibaraki 305-0047 , Japan
| | - Kanniyappan Udayakumar
- University of Montreal, Saint-Justine Hospital University Center , 3175 Cote Sainte-Catherine , Montreal , QC H3T1C5 , Canada
| | | | | | - Prakasarao Aruna
- Department of Medical Physics , Anna University , Chennai 600 025 , India
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41
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Pal R, Jana G, Sural S, Chattaraj PK. Hydrophobicity versus electrophilicity: A new protocol toward quantitative structure-toxicity relationship. Chem Biol Drug Des 2018; 93:1083-1095. [DOI: 10.1111/cbdd.13428] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/08/2018] [Accepted: 10/18/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Ranita Pal
- Department of Chemistry and Center for Theoretical Studies; Indian Institute of Technology Kharagpur; Kharagpur India
| | - Gourhari Jana
- Department of Chemistry and Center for Theoretical Studies; Indian Institute of Technology Kharagpur; Kharagpur India
| | - Shamik Sural
- Department of Computer Science and Engineering; Indian Institute of Technology Kharagpur; Kharagpur India
| | - Pratim Kumar Chattaraj
- Department of Chemistry and Center for Theoretical Studies; Indian Institute of Technology Kharagpur; Kharagpur India
- Department of Chemistry; Indian Institute of Technology Bombay; Powai, Mumbai India
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42
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Karthikeyan S, Bharanidharan G, Ragavan S, Kandasamy S, Chinnathambi S, Udayakumar K, Mangaiyarkarasi R, Sundaramoorthy A, Aruna P, Ganesan S. Comparative Binding Analysis of N-Acetylneuraminic Acid in Bovine Serum Albumin and Human α-1 Acid Glycoprotein. J Chem Inf Model 2018; 59:326-338. [PMID: 30481010 DOI: 10.1021/acs.jcim.8b00558] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The present study focuses on the determination of the biologically significant N-acetylneuraminic acid (NANA) drug binding interaction mechanism between bovine serum albumin (BSA) and human α-1 acid glycoprotein (HAG) using various optical spectroscopy and computational methods. The steady state fluorescence spectroscopy result suggests that the fluorescence intensity of BSA and HAG was quenched by NANA in a static mode of quenching. Further time-resolved emission spectroscopy measurements confirm that mode of quenching mechanism of NANA in the BSA and HAG system. The FT-IR, excitation-emission matrix and circular dichroism (CD) analysis confirms the presence of NANA in the HAG, BSA system, and fluorescence resonance energy transfer analysis shows that NANA transfers energy between the HAG and BSA system. The molecular docking result shows good binding affinity in both protein complexes, and further molecular dynamics simulations and charge distribution analysis were performed to gain more insight into the binding interaction mechanism of NANA in the HAG and BSA complex.
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Affiliation(s)
- Subramani Karthikeyan
- Department of Medical Physics , Anna University , Chennai - 600 025 , India.,Department of Organic Chemistry, Science Faculty , Peoples' Friendship University of Russia (RUDN University) , MikluhoMaklaya St., 6 , Moscow , Russia , 117198
| | | | - Sriram Ragavan
- Centre of Advanced Study in Crystallography and Biophysics , University of Madras , Chennai - 600 025 , India
| | | | - Shanmugavel Chinnathambi
- International Center for Young Scientists , National Institute for Materials Science (NIMS) , 1-2-1 Sengen , Tsukuba , Ibaraki 305-0047 , Japan
| | - Kanniyappan Udayakumar
- Postdoctoral Research Fellow, University of Montreal , Saint-Justine Hospital University Center , 3175 Cote Sainte-Catherine , Montreal , Quebec H3T1C5 , Canada
| | | | | | - Prakasarao Aruna
- Department of Medical Physics , Anna University , Chennai - 600 025 , India
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43
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Saranya V, Shankar R, Vijayakumar S. Structural exploration of viral matrix protein 40 interaction with the transition metal ions (Ag+ and Cu2+). J Biomol Struct Dyn 2018; 37:2875-2896. [DOI: 10.1080/07391102.2018.1498803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- V. Saranya
- Department of Physics, Bharathiar University, Coimbatore, India
| | - R. Shankar
- Department of Physics, Bharathiar University, Coimbatore, India
| | - S. Vijayakumar
- Department of Medical Physics, Bharathiar University, Coimbatore, India
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44
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Sharma BK, Roy DR. Toxicity of polyhalogenated dibenzo-p-furans in the light of nucleic acid bases interaction. Comput Biol Chem 2018; 76:225-231. [PMID: 30075463 DOI: 10.1016/j.compbiolchem.2018.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/24/2018] [Accepted: 07/03/2018] [Indexed: 10/28/2022]
Abstract
Quantitative structure-activity relationship (QSAR) investigation utilizing quantum chemical descriptors under density functional theory is performed to predict the toxicity (pEC50) of a series of polyhalogenated dibenzo-p-furans (PHDFs). PHDFs are very important concern to the researchers due to their presence and diverse effects in the environment. A successful two parameter QSAR model is developed with a combination of a global descriptor known as charge transfer (ΔN) between toxins and biosystem and a local descriptor as Fukui function (fmax+) for maximum nucleophilic attack at the toxin site. A systematic analysis is performed to identify the electron donation/acceptance nature of the considered PHDF compounds with the choice of a model biosystems comprising five different nucleic acid bases, namely Adenine, Thymine, Guanine, Cytosine and Uracil to identify proper ΔN descriptor. Accordingly, PHDFs are found to be electron acceptors with maximum charge transfer from Guanine and therefore, ΔNG is utilized as the charge transfer parameter for all the toxins in the present work. The selected combination of global and local descriptors (ΔNG andfmax+) are found to predict 93% of the observed toxicity (pEC50) of the PHDFs. The developed QSAR model is tested for two different test sets: PHDFs and polyhalogenated biphenyls (PHBs) with about 90% of prediction of their toxicity values, which confirms the importance of the selected descriptors.
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Affiliation(s)
- Bhumika K Sharma
- Materials and Biophysics Group, Department of Applied Physics, S. V. National Institute of Technology, Surat, 395007, India
| | - Debesh R Roy
- Materials and Biophysics Group, Department of Applied Physics, S. V. National Institute of Technology, Surat, 395007, India.
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45
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Mondal Roy S. Bio-activity of aminosulfonyl ureas in the light of nucleic acid bases and DNA base pair interaction. Comput Biol Chem 2018; 75:91-100. [PMID: 29753268 DOI: 10.1016/j.compbiolchem.2018.04.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 04/21/2018] [Accepted: 04/23/2018] [Indexed: 01/09/2023]
Abstract
The quantum chemical descriptors based on density functional theory (DFT) are applied to predict the biological activity (log IC50) of one class of acyl-CoA: cholesterol O-acyltransferase (ACAT) inhibitors, viz. aminosulfonyl ureas. ACAT are very effective agents for reduction of triglyceride and cholesterol levels in human body. Successful two parameter quantitative structure-activity relationship (QSAR) models are developed with a combination of relevant global and local DFT based descriptors for prediction of biological activity of aminosulfonyl ureas. The global descriptors, electron affinity of the ACAT inhibitors (EA) and/or charge transfer (ΔN) between inhibitors and model biosystems (NA bases and DNA base pairs) along with the local group atomic charge on sulfonyl moiety (∑QSul) of the inhibitors reveals more than 90% efficacy of the selected descriptors for predicting the experimental log (IC50) values.
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Affiliation(s)
- Sutapa Mondal Roy
- Department of Chemistry, Uka Tarsadia University, Maliba Campus, Tarsadi 394 350 India.
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46
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Karthikeyan S, Bharanidharan G, Mangaiyarkarasi R, Chinnathambi S, Sriram R, Gunasekaran K, Saravanan K, Gopikrishnan M, Aruna P, Ganesan S. A cytotoxicity, optical spectroscopy and computational binding analysis of 4-[3-acetyl-5-(acetylamino)-2-methyl-2,3-dihydro-1,3,4-thiadiazole-2-yl]phenyl benzoate in calf thymus DNA. LUMINESCENCE 2018; 33:731-741. [DOI: 10.1002/bio.3470] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/18/2018] [Accepted: 01/26/2018] [Indexed: 12/13/2022]
Affiliation(s)
| | | | | | - Shanmugavel Chinnathambi
- Nanotechnology Innovation Station; National Institute for Materials Science; Tsukuba Ibaraki Japan
| | - Ragavan Sriram
- Centre of Advanced Study in Crystallography and Biophysics; University of Madras; Chennai India
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47
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Sivanandam M, Saravanan K, Kumaradhas P. Insights into intermolecular interactions, electrostatic properties and the stability of C646 in the binding pocket of p300 histone acetyltransferase enzyme: a combined molecular dynamics and charge density study. J Biomol Struct Dyn 2017; 36:3246-3264. [DOI: 10.1080/07391102.2017.1384761] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Magudeeswaran Sivanandam
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, India
| | - Kandasamy Saravanan
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, India
| | - Poomani Kumaradhas
- Laboratory of Biocrystallography and Computational Molecular Biology, Department of Physics, Periyar University, Salem 636 011, India
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48
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Gayathri K, Radhika R, Shankar R, Malathi M, Savithiri K, Sparkes HA, Howard JA, Mohan PS. Comparative theoretical and experimental study on novel tri-quinoline system and its anticancer studies. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.01.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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49
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Effect of Constituent Units, Type of Interflavan Bond, and Conformation on the Antioxidant Properties of Procyanidin Dimers: A Computational Outlook. J CHEM-NY 2017. [DOI: 10.1155/2017/3535148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Procyanidin (PC) dimers are powerful antioxidants, abundant in plant tissues, and also bioavailable. However, the role of the molecular structure of PCs on their antioxidant properties is still a controversial and not fully understood issue that needs to be addressed in a more specific way. The objective of this study was to analyze the effect of the constituent units, type of interflavan bond, and conformation on the antioxidant properties of PC dimers including PB3, PB4, PB5, PB6, PB7, and PB8, using the density functional theory (DFT) computational method. The analysis was performed in function of parameters that allow determining the ability of the molecules to transfer or to capture electrons, among which the chemical potential, bond dissociation enthalpy (BDE), gap energy, Fukui indices, and charge distribution of HOMO-LUMO orbitals. The factors that showed the most notable effects on the antioxidant properties of the PC dimers were the type of interflavan bond and the conformation. The antioxidant ability of the dimers PB3 and PB4 containing the interflavan bond C4–C8, in their Compact conformation, was very similar to each other but greater than those of dimers PB5, PB6, PB7, and PB8 containing the C4–C6 interflavan bond. PB8 showed the lowest antioxidant ability.
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50
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Pan S, Gupta AK, Subramanian V, Chattaraj PK. Quantitative Structure-Activity/Property/Toxicity Relationships through Conceptual Density Functional Theory-Based Reactivity Descriptors. PHARMACEUTICAL SCIENCES 2017. [DOI: 10.4018/978-1-5225-1762-7.ch058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Developing effective structure-activity/property/toxicity relationships (QSAR/QSPR/QSTR) is very helpful in predicting biological activity, property, and toxicity of a given set of molecules. Regular change in these properties with the structural alteration is the main reason to obtain QSAR/QSPR/QSTR models. The advancement in making different QSAR/QSPR/QSTR models to describe activity, property, and toxicity of various groups of molecules is reviewed in this chapter. The successful implementation of Conceptual Density Functional Theory (CDFT)-based global as well as local reactivity descriptors in modeling effective QSAR/QSPR/QSTR is highlighted.
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Affiliation(s)
- Sudip Pan
- Indian Institute of Technology Kharagpur, India
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