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Bhattacharjee A, Kar S, Ojha PK. Unveiling G-protein coupled receptor kinase-5 inhibitors for chronic degenerative diseases: Multilayered prioritization employing explainable machine learning-driven multi-class QSAR, ligand-based pharmacophore and free energy-inspired molecular simulation. Int J Biol Macromol 2024; 269:131784. [PMID: 38697440 DOI: 10.1016/j.ijbiomac.2024.131784] [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: 01/24/2024] [Revised: 04/02/2024] [Accepted: 04/21/2024] [Indexed: 05/05/2024]
Abstract
GRK5 holds a pivotal role in cellular signaling pathways, with its overexpression in cardiomyocytes, neuronal cells, and tumor cells strongly associated with various chronic degenerative diseases, which highlights the urgent need for potential inhibitors. In this study, multiclass classification-based QSAR models were developed using diverse machine learning algorithms. These models were built from curated compounds with experimentally derived GRK5 inhibitory activity. Additionally, a pharmacophore model was constructed using active compounds from the dataset. Among the models, the SVM-based approach proved most effective and was initially used to screen DrugBank compounds within the applicability domain. Compounds showing significant GRK5 inhibitory potential underwent evaluation for key pharmacophoric features. Prospective compounds were subjected to molecular docking to assess binding affinity towards GRK5's key active site amino acid residues. Stability at the binding site was analyzed through 200 ns molecular dynamics simulations. MM-GBSA analysis quantified individual free energy components contributing to the total binding energy with respect to binding site residues. Metadynamics analysis, including PCA, FEL, and PDF, provided crucial insights into conformational changes of both apo and holo forms of GRK5 at defined energy states. The study identifies DB02844 (S-Adenosyl-1,8-Diamino-3-Thiooctane) and DB13155 (Esculin) as promising GRK5 inhibitors, warranting further in vitro and in vivo validation studies.
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Affiliation(s)
- Arnab Bhattacharjee
- Drug Discovery and Development Laboratory (DDD Lab), Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India
| | - Supratik Kar
- Chemometrics and Molecular Modeling Laboratory, Department of Chemistry and Physics, Kean University, 1000 Morris Avenue, Union, NJ, 07083, USA
| | - Probir Kumar Ojha
- Drug Discovery and Development Laboratory (DDD Lab), Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India.
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2
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Kumar S, Bhowmik R, Oh JM, Abdelgawad MA, Ghoneim MM, Al-Serwi RH, Kim H, Mathew B. Machine learning driven web-based app platform for the discovery of monoamine oxidase B inhibitors. Sci Rep 2024; 14:4868. [PMID: 38418571 PMCID: PMC10901862 DOI: 10.1038/s41598-024-55628-y] [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: 01/04/2024] [Accepted: 02/26/2024] [Indexed: 03/01/2024] Open
Abstract
Monoamine oxidases (MAOs), specifically MAO-A and MAO-B, play important roles in the breakdown of monoamine neurotransmitters. Therefore, MAO inhibitors are crucial for treating various neurodegenerative disorders, including Parkinson's disease (PD), Alzheimer's disease (AD), and amyotrophic lateral sclerosis (ALS). In this study, we developed a novel cheminformatics pipeline by generating three diverse molecular feature-based machine learning-assisted quantitative structural activity relationship (ML-QSAR) models concerning MAO-B inhibition. PubChem fingerprints, substructure fingerprints, and one-dimensional (1D) and two-dimensional (2D) molecular descriptors were implemented to unravel the structural insights responsible for decoding the origin of MAO-B inhibition in 249 non-reductant molecules. Based on a random forest ML algorithm, the final PubChem fingerprint, substructure fingerprint, and 1D and 2D molecular descriptor prediction models demonstrated significant robustness, with correlation coefficients of 0.9863, 0.9796, and 0.9852, respectively. The significant features of each predictive model responsible for MAO-B inhibition were extracted using a comprehensive variance importance plot (VIP) and correlation matrix analysis. The final predictive models were further developed as a web application, MAO-B-pred ( https://mao-b-pred.streamlit.app/ ), to allow users to predict the bioactivity of molecules against MAO-B. Molecular docking and dynamics studies were conducted to gain insight into the atomic-level molecular interactions between the ligand-receptor complexes. These findings were compared with the structural features obtained from the ML-QSAR models, which supported the mechanistic understanding of the binding phenomena. The presented models have the potential to serve as tools for identifying crucial molecular characteristics for the rational design of MAO-B target inhibitors, which may be used to develop effective drugs for neurodegenerative disorders.
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Affiliation(s)
- Sunil Kumar
- Department of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Sciences Campus, Kochi, India
| | - Ratul Bhowmik
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Jong Min Oh
- Department of Pharmacy, and Research Institute of Life Pharmaceutical Sciences, Sunchon National University, Suncheon, 57922, Republic of Korea
| | - Mohamed A Abdelgawad
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, 72341, Sakaka, Aljouf, Saudi Arabia
| | - Mohammed M Ghoneim
- Department of Pharmacy Practice, College of Pharmacy, AlMaarefa University, 13713, Ad Diriyah, Riyadh, Saudi Arabia
| | - Rasha Hamed Al-Serwi
- Department of Basic Dental Sciences, College of Dentistry, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, 11671, Riyadh, Saudi Arabia
| | - Hoon Kim
- Department of Pharmacy, and Research Institute of Life Pharmaceutical Sciences, Sunchon National University, Suncheon, 57922, Republic of Korea.
| | - Bijo Mathew
- Department of Pharmaceutical Chemistry, Amrita School of Pharmacy, Amrita Vishwa Vidyapeetham, AIMS Health Sciences Campus, Kochi, India.
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Dembitsky VM. Steroids Bearing Heteroatom as Potential Drugs for Medicine. Biomedicines 2023; 11:2698. [PMID: 37893072 PMCID: PMC10604304 DOI: 10.3390/biomedicines11102698] [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: 09/04/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
Heteroatom steroids, a diverse class of organic compounds, have attracted significant attention in the field of medicinal chemistry and drug discovery. The biological profiles of heteroatom steroids are of considerable interest to chemists, biologists, pharmacologists, and the pharmaceutical industry. These compounds have shown promise as potential therapeutic agents in the treatment of various diseases, such as cancer, infectious diseases, cardiovascular disorders, and neurodegenerative conditions. Moreover, the incorporation of heteroatoms has led to the development of targeted drug delivery systems, prodrugs, and other innovative pharmaceutical approaches. Heteroatom steroids represent a fascinating area of research, bridging the fields of organic chemistry, medicinal chemistry, and pharmacology. The exploration of their chemical diversity and biological activities holds promise for the discovery of novel drug candidates and the development of more effective and targeted treatments.
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Affiliation(s)
- Valery M Dembitsky
- Centre for Applied Research, Innovation and Entrepreneurship, Lethbridge College, 3000 College Drive South, Lethbridge, AB T1K 1L6, Canada
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4
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He Y, Miao F, Fan Y, He J, Zhang F, Wang Z, Wu Y, Zhao Y, Yang P. Analysis of Acupoint Selection and Combinations in Acupuncture Treatment of Piriformis Syndrome: A Protocol for Data Mining. J Pain Res 2023; 16:3265-3272. [PMID: 37790189 PMCID: PMC10544196 DOI: 10.2147/jpr.s422857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 07/22/2023] [Indexed: 10/05/2023] Open
Abstract
Background Piriformis syndrome (PS) is a neuromuscular condition characterized by discomfort in the gluteal region. The efficacy of acupuncture as a treatment modality for PS has been substantiated through a multitude of clinical trials. However, certain queries persist, such as the optimal approach for identifying the most efficacious acupoints. The objective of this study is to perform an initial data mining analysis aimed at identifying the optimal acupoint selection and combinations for the treatment of PS. Methods We will search 7 electronic bibliographic databases (PubMed, Embase, Cochrane Library, China National Knowledge Infrastructure, Wanfang Database, Chinese Biomedical Literature Database and Chongqing VIP Database) from inception to June 2023. We will select clinical trials that evaluate the efficacy of acupuncture therapy in the management of PS. Exclusions will be made for reviews, protocols, animal trials, case reports, systematic reviews, and meta-analyses. The primary outcome measure will be clinical outcomes associated with PS. Descriptive statistics will be performed in Excel 2019. Association rule analysis will be performed in SPSS Modeler 18.0. Exploratory factor analysis and cluster analysis will be performed in SPSS Statistics 26.0. Results This study will investigate the most effective acupoint selection and combinations for patients with PS. Conclusion Our findings will provide evidence for the effectiveness and potential treatment prescriptions of acupoint application for patients with PS, helping clinicians and patients make a more informed decision together.
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Affiliation(s)
- Yujun He
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Furui Miao
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Yushan Fan
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Jiujie He
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Fangzhi Zhang
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Zibin Wang
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Yu Wu
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Yiping Zhao
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Pu Yang
- Graduate School, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
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5
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He Y, Miao F, Fan Y, Zhang F, Yang P, Zhao X, Wang M, He C, He J. Analysis of Acupoint Selection and Combinations in Acupuncture Treatment of Carpal Tunnel Syndrome: A Protocol for Data Mining. J Pain Res 2023; 16:1941-1948. [PMID: 37312834 PMCID: PMC10258040 DOI: 10.2147/jpr.s411843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 05/25/2023] [Indexed: 06/15/2023] Open
Abstract
Background Carpal tunnel syndrome (CTS), as the most common compression neuropathy in the upper limb, can lead to upper limb dysfunction in patients. The effectiveness of acupuncture in treating CTS has been validated based on numerous clinical trials and meta-analyses, but questions remain, such as how to select the best acupoints. Our purpose is to conduct the first data mining analysis to identify the most effective acupoint selection and combinations for treating CTS. Methods We will search 7 electronic bibliographic databases (PubMed, Embase, Cochrane Library, China National Knowledge Infrastructure, Wanfang Database, Chinese Biomedical Literature Database and Chongqing VIP Database) from inception to March 2023. Clinical trials assessing the effectiveness of acupuncture therapy on the management of CTS will be selected. Reviews, protocols, animal trials, case reports, systematic reviews, and meta-analyses will be excluded. The primary outcome measure will be clinical result associated with CTS. Descriptive statistics will be performed in Excel 2019. Association rule analysis will be performed in SPSS Modeler 18.0. Exploratory factor analysis and cluster analysis will be performed in SPSS Statistics 26.0. Results This study will investigate the most effective acupoint selection and combinations for patients with CTS. Conclusion Our findings will provide evidence for the effectiveness and potential treatment prescriptions of acupoint application for patients with CTS, helping clinicians and patients make a more informed decision together.
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Affiliation(s)
- Yujun He
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Furui Miao
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Yushan Fan
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Fangzhi Zhang
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Pu Yang
- Graduate School, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Xinyi Zhao
- Guangxi Zhuang Yao Medicine Center of Engineering and Technology, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Miaodong Wang
- Graduate School, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Cai He
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
| | - Jiujie He
- Faculty of Acupuncture, Moxibustion and Tui Na, Guangxi University of Chinese Medicine, Nanning, People’s Republic of China
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6
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Köse E, Erkan Köse M, Güneşdoğdu Sağdınç S. Principal component analysis of quantum mechanical descriptors data to reveal the pharmacological activities of oxindole derivatives. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
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7
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Khani S, Mohajer F, Mohammadi Ziarani G, Badiei A, Ghasemi JB. Using the extract of pomegranate peel as a natural indicator for colorimetric detection and simultaneous determination of Fe 3+ and Fe 2+ by partial least squares–artificial neural network. JOURNAL OF CHEMOMETRICS 2023; 37. [DOI: 10.1002/cem.3390] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 01/27/2022] [Indexed: 06/17/2023]
Affiliation(s)
- Shokoofeh Khani
- School of Chemistry, University College of Science University of Tehran Tehran Iran
| | - Fatemeh Mohajer
- Department of Chemistry, Faculty of Physics and Chemistry University of Alzahra Tehran Iran
| | | | - Alireza Badiei
- School of Chemistry, University College of Science University of Tehran Tehran Iran
| | - Jahan B. Ghasemi
- School of Chemistry, University College of Science University of Tehran Tehran Iran
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8
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Overview of cocaine identification by vibrational spectroscopy and chemometrics. Forensic Sci Int 2023; 342:111540. [PMID: 36565684 DOI: 10.1016/j.forsciint.2022.111540] [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: 08/04/2022] [Revised: 11/29/2022] [Accepted: 12/10/2022] [Indexed: 12/23/2022]
Abstract
The use of non-destructive forensic methods for cocaine identification is of outstanding importance, given the amount of samples seized. Techniques such as ATR-FTIR, Raman, and NIR spectroscopy have become alternatives to circumvent this problem, as they allow fast, cheap analysis, and enable the reanalysis of samples. When combined with chemometrics, these spectroscopic methods can be used to determine and quantify cocaine samples, meaning that the limitations of existing techniques can be overcome. This review article covers spectroscopic techniques for identifying cocaine in different forms and matrices, such as food and textiles, which are materials used for smuggling. The chemometric identification of cocaine in oral fluid and water is also discussed. In addition, vibrational spectroscopy techniques using portable equipment are described. This work seeks to evaluate the main chemometric applications of spectroscopic data and to find new perspectives on the identification of cocaine using chemometrics.
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9
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Piekuś-Słomka N, Zapadka M, Kupcewicz B. Methoxy and methylthio-substituted trans-stilbene derivatives as CYP1B1 inhibitors – QSAR study with detailed interpretation of molecular descriptors. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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10
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Conti S, Ovchinnikov V, Karplus M. ppdx: Automated modeling of protein-protein interaction descriptors for use with machine learning. J Comput Chem 2022; 43:1747-1757. [PMID: 35930347 DOI: 10.1002/jcc.26974] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 07/01/2022] [Accepted: 07/13/2022] [Indexed: 11/07/2022]
Abstract
This paper describes ppdx, a python workflow tool that combines protein sequence alignment, homology modeling, and structural refinement, to compute a broad array of descriptors for characterizing protein-protein interactions. The descriptors can be used to predict various properties of interest, such as protein-protein binding affinities, or inhibitory concentrations (IC50 ), using approaches that range from simple regression to more complex machine learning models. The software is highly modular. It supports different protocols for generating structures, and 95 descriptors can be currently computed. More protocols and descriptors can be easily added. The implementation is highly parallel and can fully exploit the available cores in a single workstation, or multiple nodes on a supercomputer, allowing many systems to be analyzed simultaneously. As an illustrative application, ppdx is used to parametrize a model that predicts the IC50 of a set of antigens and a class of antibodies directed to the influenza hemagglutinin stalk.
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Affiliation(s)
- Simone Conti
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, USA
| | - Victor Ovchinnikov
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, USA
| | - Martin Karplus
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts, USA.,Laboratoire de Chimie Biophysique, Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, Strasbourg, France
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11
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Big data and artificial intelligence (AI) methodologies for computer-aided drug design (CADD). Biochem Soc Trans 2022; 50:241-252. [PMID: 35076690 PMCID: PMC9022974 DOI: 10.1042/bst20211240] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/23/2021] [Accepted: 12/23/2021] [Indexed: 12/18/2022]
Abstract
There have been numerous advances in the development of computational and statistical methods and applications of big data and artificial intelligence (AI) techniques for computer-aided drug design (CADD). Drug design is a costly and laborious process considering the biological complexity of diseases. To effectively and efficiently design and develop a new drug, CADD can be used to apply cutting-edge techniques to various limitations in the drug design field. Data pre-processing approaches, which clean the raw data for consistent and reproducible applications of big data and AI methods are introduced. We include the current status of the applicability of big data and AI methods to drug design areas such as the identification of binding sites in target proteins, structure-based virtual screening (SBVS), and absorption, distribution, metabolism, excretion and toxicity (ADMET) property prediction. Data pre-processing and applications of big data and AI methods enable the accurate and comprehensive analysis of massive biomedical data and the development of predictive models in the field of drug design. Understanding and analyzing biological, chemical, or pharmaceutical architectures of biomedical entities related to drug design will provide beneficial information in the biomedical big data era.
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12
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Strojnik L, Potočnik D, Jagodic Hudobivnik M, Mazej D, Japelj B, Škrk N, Marolt S, Heath D, Ogrinc N. Geographical identification of strawberries based on stable isotope ratio and multi-elemental analysis coupled with multivariate statistical analysis: A Slovenian case study. Food Chem 2022; 381:132204. [PMID: 35114619 DOI: 10.1016/j.foodchem.2022.132204] [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: 10/12/2021] [Revised: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 11/27/2022]
Abstract
The geographical classification and authentication of strawberries were attempted using discriminant and class-modelling methods applied to stable isotopes of light elements and elemental composition. The work involved creating a database of 92 authentic Slovenian strawberry samples and 32 imported samples. All samples were harvested between 2018 and 2020. A good geographical classification of Slovenian and non-Slovenian strawberries was obtained despite different production years using discriminant approaches. However, for verifying compliance with a given specification (geographical indications), a class-modelling approach was used to build an unbiased verification model. Class models generated by data-driven soft independent modelling of class analogy (DD-SIMCA) had high sensitivity (96% to 97%) and good specificity (81% to 91%) on a yearly basis, while a more generalised model combining total yearly data gave a lower specificity (63%). Of the 33 commercially available samples (test samples) with declared Slovenian origin, 39% were from outside of Slovenia.
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Affiliation(s)
- Lidija Strojnik
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana 1000, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana 1000, Slovenia.
| | - Doris Potočnik
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana 1000, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana 1000, Slovenia.
| | | | - Darja Mazej
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana 1000, Slovenia.
| | | | - Nadja Škrk
- Administration for Food Safety, Veterinary Sector and Plant Protection, Ministry of Agriculture, Forestry and Food of the Republic of Slovenia, Ljubljana 1000, Slovenia.
| | - Suzana Marolt
- Administration for Food Safety, Veterinary Sector and Plant Protection, Ministry of Agriculture, Forestry and Food of the Republic of Slovenia, Ljubljana 1000, Slovenia.
| | - David Heath
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana 1000, Slovenia.
| | - Nives Ogrinc
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana 1000, Slovenia; Jožef Stefan International Postgraduate School, Ljubljana 1000, Slovenia.
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13
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Chu CSM, Simpson JD, O'Neill PM, Berry NG. Machine learning - Predicting Ames mutagenicity of small molecules. J Mol Graph Model 2021; 109:108011. [PMID: 34555723 DOI: 10.1016/j.jmgm.2021.108011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/29/2021] [Accepted: 08/18/2021] [Indexed: 10/20/2022]
Abstract
In modern drug discovery, detection of a compound's potential mutagenicity is crucial. However, the traditional method of mutagenicity detection using the Ames test is costly and time consuming as the compounds need to be synthesised and then tested and the results are not always accurate and reproducible. Therefore, it would be advantageous to develop robust in silico models which can accurately predict the mutagenicity of a compound prior to synthesis to overcome the inadequacies of the Ames test. After curation of a previously defined compound mutagenicity library, over 5000 molecules had their chemical fingerprints and molecular properties calculated. Using 8 classification modelling algorithms, including support vector machine (SVM), random forest (RF) and extreme gradient boosting (XGB), a total of 112 predictive models have been constructed. Their performance has been assessed using 10-fold cross validation and a hold-out test set and some of the top performing models have been assessed using the y-randomisation approach. As a result, we have found SVM and XGB models to have good performance during the 10-fold cross validation (AUROC >0.90, sensitivity >0.85, specificity >0.75, balanced accuracy >0.80, Kappa >0.65) and on the test set (AUROC >0.65, sensitivity >0.65, specificity >0.60, balanced accuracy >0.65, Kappa >0.30). We have also identified molecular properties that are the most influential for mutagenicity prediction when combined with chemical molecular fingerprints. Using the Class A mutagenic compounds from the Ames/QSAR International Challenge Project, we were able to verify our models perform better, predicting more mutagens correctly then the StarDrop Ames mutagenicity prediction and TEST mutagenicity prediction.
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Affiliation(s)
- Charmaine S M Chu
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
| | - Jack D Simpson
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Paul M O'Neill
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK
| | - Neil G Berry
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool, L69 7ZD, UK.
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14
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Multivariate analysis of physico-chemical, bioactive, microbial and spectral data characterisation of Algerian honey. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-00946-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Alsenan S, Al-Turaiki I, Hafez A. A deep learning approach to predict blood-brain barrier permeability. PeerJ Comput Sci 2021; 7:e515. [PMID: 34179448 PMCID: PMC8205267 DOI: 10.7717/peerj-cs.515] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/08/2021] [Indexed: 06/13/2023]
Abstract
The blood-brain barrier plays a crucial role in regulating the passage of 98% of the compounds that enter the central nervous system (CNS). Compounds with high permeability must be identified to enable the synthesis of brain medications for the treatment of various brain diseases, such as Parkinson's, Alzheimer's, and brain tumors. Throughout the years, several models have been developed to solve this problem and have achieved acceptable accuracy scores in predicting compounds that penetrate the blood-brain barrier. However, predicting compounds with "low" permeability has been a challenging task. In this study, we present a deep learning (DL) classification model to predict blood-brain barrier permeability. The proposed model addresses the fundamental issues presented in former models: high dimensionality, class imbalances, and low specificity scores. We address these issues to enhance the high-dimensional, imbalanced dataset before developing the classification model: the imbalanced dataset is addressed using oversampling techniques and the high dimensionality using a non-linear dimensionality reduction technique known as kernel principal component analysis (KPCA). This technique transforms the high-dimensional dataset into a low-dimensional Euclidean space while retaining invaluable information. For the classification task, we developed an enhanced feed-forward deep learning model and a convolutional neural network model. In terms of specificity scores (i.e., predicting compounds with low permeability), the results obtained by the enhanced feed-forward deep learning model outperformed those obtained by other models in the literature that were developed using the same technique. In addition, the proposed convolutional neural network model surpassed models used in other studies in multiple accuracy measures, including overall accuracy and specificity. The proposed approach solves the problem inevitably faced with obtaining low specificity resulting in high false positive rate.
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Affiliation(s)
- Shrooq Alsenan
- Information Systems Department, College of Computer and Information Sciences, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Isra Al-Turaiki
- Information Technology Department, College of Computer and Information Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Alaaeldin Hafez
- Information Systems Department, College of Computer and Information Sciences, King Saud University, Riyadh, Saudi Arabia
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16
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Poole CF. Solvation parameter model: Tutorial on its application to separation systems for neutral compounds. J Chromatogr A 2021; 1645:462108. [PMID: 33857674 DOI: 10.1016/j.chroma.2021.462108] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/18/2021] [Accepted: 03/21/2021] [Indexed: 12/16/2022]
Abstract
The solvation parameter model affords a useful tool to model distribution properties of neutral compounds in biphasic separation systems. Common applications include column characterization and method development in gas chromatography; reversed-phase, micellar and hydrophilic interaction liquid chromatography; supercritical fluid chromatography; and micellar electrokinetic chromatography. The characterization of the distribution properties of liquid-liquid partition systems is another major application of this model. This tutorial is aimed at establishing good practices for the application of the model to separation systems. Suitable experimental protocols to determine system constants by multiple linear regression analysis and descriptors by the Solver method are presented; statistical tools to evaluate model quality are discussed; and model-specific data analysis tools based on system maps and correlation diagrams are described.
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Affiliation(s)
- Colin F Poole
- Department of Chemistry, Wayne State University, Detroit, MI, 48202, USA.
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Determination of physicochemical properties of ionic liquids by gas chromatography. J Chromatogr A 2021; 1644:461964. [PMID: 33741140 DOI: 10.1016/j.chroma.2021.461964] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/24/2021] [Accepted: 01/31/2021] [Indexed: 12/27/2022]
Abstract
Over the years room temperature ionic liquids have gained attention as solvents with favorable environmental and technical features. Both chromatographic and conventional methods afford suitable tools for the study of their physicochemical properties. Use of gas chromatography compared to conventional methods for the measurement of physicochemical properties of ionic liquids have several advantages; very low sample concentrations, high accuracy, faster measurements, use of wider temperature range and the possibility to determine physicochemical properties of impure samples. Also, general purpose gas chromatography instruments are widely available in most laboratories thus alleviating the need to purchase more specific instruments for less common physiochemical measurements. Some of the main types of physicochemical properties of ionic liquids accessible using gas chromatography include gas-liquid partition constants, infinite dilution activity coefficients, partial molar quantities, solubility parameters, system constants of the solvation parameter model, thermal stability, transport properties, and catalytic and other surface properties.
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Poole CF, Atapattu SN. Selectivity evaluation of core-shell silica columns for reversed-phase liquid chromatography using the solvation parameter model. J Chromatogr A 2020; 1634:461692. [DOI: 10.1016/j.chroma.2020.461692] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/31/2020] [Accepted: 11/04/2020] [Indexed: 02/07/2023]
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19
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Quantitative structure-property relationship of standard enthalpies of nitrogen oxides based on a MSR and LS-SVR algorithm predictions. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128867] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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20
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Selection of calibration compounds for selectivity evaluation of siloxane-bonded silica columns for reversed-phase liquid chromatography by the solvation parameter model. J Chromatogr A 2020; 1633:461652. [DOI: 10.1016/j.chroma.2020.461652] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/07/2020] [Accepted: 10/26/2020] [Indexed: 02/02/2023]
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Poole CF. Selection of calibration compounds for selectivity evaluation of wall-coated, open-tubular columns for gas chromatography by the solvation parameter model. J Chromatogr A 2020; 1629:461500. [DOI: 10.1016/j.chroma.2020.461500] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/16/2020] [Accepted: 08/18/2020] [Indexed: 01/07/2023]
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22
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Duan W, Pan Y, He H, Zhao S, Zhao X, Jiang J, Shu CM. Prediction of the thermal decomposition temperatures of imidazolium ILs based on norm indexes. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Alsenan S, Al-Turaiki I, Hafez A. A Recurrent Neural Network model to predict blood-brain barrier permeability. Comput Biol Chem 2020; 89:107377. [PMID: 33010784 DOI: 10.1016/j.compbiolchem.2020.107377] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/09/2020] [Accepted: 09/12/2020] [Indexed: 12/14/2022]
Abstract
The rapid development of computational methods and the increasing volume of chemical and biological data have contributed to an immense growth in chemical research. This field of study is known as "chemoinformatics," which is a discipline that uses machine-learning techniques to extract, process, and extrapolate data from chemical structures. One of the significant lines of research in chemoinformatics is the study of blood-brain barrier (BBB) permeability, which aims to identify drug penetration into the central nervous system (CNS). In this research, we attempt to solve the problem of BBB permeability by predicting compounds penetration to the CNS. To accomplish this goal: (i) First, an overview is provided to the field of chemoinformatics, its definition, applications, and challenges, (ii) Second, a broad view is taken to investigate previous machine-learning and deep-learning computational models to solve BBB permeability. Based on the analysis of previous models, three main challenges that collectively affect the classifier performance are identified, which we define as "the triple constraints"; subsequently, we map each constraint to a proposed solution, (iii) Finally, we conclude this endeavor by proposing a deep learning based Recurrent Neural Network model, to predict BBB permeability (RNN-BBB model). Our model outperformed other studies from the literature by scoring an overall accuracy of 96.53%, and a specificity score of 98.08%. The obtained results confirm that addressing the triple constraints substantially improves the classification model capability specifically when predicting compounds with low penetration.
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Affiliation(s)
- Shrooq Alsenan
- Research Center, College of Computer and Information Sciences, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia; Research Chair in Healthcare Innovation, Information Systems Department, College of Computer and Information Sciences, King Saud University, Riyadh, Saudi Arabia.
| | - Isra Al-Turaiki
- College of Computer and Information Sciences, Information Technology Department, King Saud University, Riyadh, Saudi Arabia.
| | - Alaaeldin Hafez
- College of Computer and Information Sciences, Information Systems Department, King Saud University, Riyadh, Saudi Arabia.
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Ahamed TKS, Muraleedharan K. A cheminformatic study on chemical space characterization and diversity analysis of 5-LOX inhibitors. J Mol Graph Model 2020; 100:107699. [PMID: 32799052 DOI: 10.1016/j.jmgm.2020.107699] [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: 04/18/2020] [Revised: 06/19/2020] [Accepted: 07/10/2020] [Indexed: 10/23/2022]
Abstract
The process of blocking 5-lipoxygenase (5-LOX) catalyzed leukotriene biosynthesis has been recognized for the past few decades as a promising therapeutic strategy for acute inflammatory, allergic, and respiratory diseases. Due to the toxicity effect of FDA approved 5-LOX inhibitor zileuton, novel 5-LOX inhibitors have been sought by the scientific community. As a result, a significant and relevant amount of information on the structure-activity of 5-LOX inhibitors has been released and stored in public databases. In this study, we aimed at the comprehensive cheminformatic characterization of the diversity and complexity of the chemical space of 5-LOX inhibitors and its activating protein FLAP inhibitors by comparing it with the Approved drug space and virtual LOX library. The visual representation of the property space indicates some compounds in the 5-LOX inhibitors space broaden the traditional medicinal space. The structural diversity of the databases is computed using complementary approaches, including Physicochemical Property (PCP) descriptors, molecular fingerprints, and molecular scaffold. With the apparent exception of approved drugs, the 5-LOX dataset shows more diversity compared to FLAP and LOX virtual library set. This study was able to identify the underlying patterns in the chemical and pharmacological properties space that were decisive for the drug discovery and development of 5-LOX inhibitors.
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Affiliation(s)
| | - K Muraleedharan
- Department of Chemistry, University of Calicut, Malappuram, 673635, India.
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Zaccagnini L, Rossetti G, Tran TH, Salzano G, Gandini A, Colini Baldeschi A, Bolognesi ML, Carloni P, Legname G. In silico/in vitro screening and hit evaluation identified new phenothiazine anti-prion derivatives. Eur J Med Chem 2020; 196:112295. [DOI: 10.1016/j.ejmech.2020.112295] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 12/15/2022]
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Szafrański K, Sławiński J, Tomorowicz Ł, Kawiak A. Synthesis, Anticancer Evaluation and Structure-Activity Analysis of Novel ( E)- 5-(2-Arylvinyl)-1,3,4-oxadiazol-2-yl)benzenesulfonamides. Int J Mol Sci 2020; 21:E2235. [PMID: 32210190 PMCID: PMC7139731 DOI: 10.3390/ijms21062235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/18/2020] [Accepted: 03/20/2020] [Indexed: 01/22/2023] Open
Abstract
To learn more about the structure-activity relationships of (E)-3-(5-styryl-1,3,4-oxadiazol-2-yl)benzenesulfonamide derivatives, which in our previous research displayed promising in vitro anticancer activity, we have synthesized a group of novel (E)-5-[(5-(2-arylvinyl)-1,3,4-oxadiazol-2-yl)]-4-chloro-2-R1-benzenesulfonamides 7-36 as well as (E)-4-[5-styryl1,3,4-oxadiazol-2-yl]benzenesulfonamides 47-50 and (E)-2-(2,4-dichlorophenyl)-5-(2-arylvinyl)-1,3,4-oxadiazols 51-55. All target derivatives were evaluated for their anticancer activity on HeLa, HCT-116, and MCF-7 human tumor cell lines. The obtained results were analyzed in order to explain the influence of a structure of the 2-aryl-vinyl substituent and benzenesulfonamide scaffold on the anti-tumor activity. Compound 31, bearing 5-nitrothiophene moiety, exhibited the most potent anticancer activity against the HCT-116, MCF-7, and HeLa cell lines, with IC50 values of 0.5, 4, and 4.5 µM, respectively. Analysis of structure-activity relationship showed significant differences in activity depending on the substituent in position 3 of the benzenesulfonamide ring and indicated as the optimal meta position of the sulfonamide moiety relative to the oxadizole ring. In the next stage, chemometric analysis was performed basing on a set of computed molecular descriptors. Hierarchical cluster analysis was used to examine the internal structure of the obtained data and the quantitative structure-activity relationship (QSAR) analysis with multiple linear regression (MLR) method allowed for finding statistically significant models for predicting activity towards all three cancer cell lines.
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Affiliation(s)
- Krzysztof Szafrański
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland; (J.S.); (Ł.T.)
| | - Jarosław Sławiński
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland; (J.S.); (Ł.T.)
| | - Łukasz Tomorowicz
- Department of Organic Chemistry, Faculty of Pharmacy, Medical University of Gdańsk, Al. Gen. J. Hallera 107, 80-416 Gdańsk, Poland; (J.S.); (Ł.T.)
| | - Anna Kawiak
- Department of Biotechnology, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdańsk, ul. Abrahama 58, 80-307 Gdańsk, Poland;
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27
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Microencapsulation of fish oil – determination of optimal wall material and encapsulation methodology. J FOOD ENG 2020. [DOI: 10.1016/j.jfoodeng.2019.109730] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Bhardwaj B, Baidya ATK, Amin SA, Adhikari N, Jha T, Gayen S. Insight into structural features of phenyltetrazole derivatives as ABCG2 inhibitors for the treatment of multidrug resistance in cancer. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2019; 30:457-475. [PMID: 31157558 DOI: 10.1080/1062936x.2019.1615545] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
ABCG2 is the principal ABC transporter involved in the multidrug resistance of breast cancer. Looking at the current demand in the development of ABCG2 inhibitors for the treatment of multidrug-resistant cancer, we have explored structural requirements of phenyltetrazole derivatives for ABCG2 inhibition by combining classical QSAR, Bayesian classification modelling and molecular docking studies. For classical QSAR, structural descriptors were calculated from the free software tool PaDEL-descriptor. Stepwise multiple linear regression (SMLR) was used for model generation. A statistically significant model was generated and validated with different parameters (For training set: r = 0.825; Q2 = 0.570 and for test set: r = 0.894, r2pred = 0.783). The predicted model was found to satisfy the Golbraikh and Trospha criteria for model acceptability. Bayesian classification modelling was also performed (ROC scores were 0.722 and 0.767 for the training and test sets, respectively). Finally, the binding interactions of phenyltetrazole type inhibitor with the ABCG2 receptor were mapped with the help of molecular docking study. The result of the docking analysis is aligned with the classical QSAR and Bayesian classification studies. The combined modelling study will guide the medicinal chemists to act faster in the drug discovery of ABCG2 inhibitors for the management of resistant breast cancer.
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Affiliation(s)
- B Bhardwaj
- a Laboratory of Drug Design and Discovery, Department of Pharmaceutical Sciences , Dr. Harisingh Gour University , Madhya Pradesh , India
| | - A T K Baidya
- a Laboratory of Drug Design and Discovery, Department of Pharmaceutical Sciences , Dr. Harisingh Gour University , Madhya Pradesh , India
| | - S A Amin
- b Natural Science Laboratory, Department of Pharmaceutical Technology, Division of Medicinal & Pharmaceutical Chemistry , Jadavpur University , Kolkata , India
| | - N Adhikari
- b Natural Science Laboratory, Department of Pharmaceutical Technology, Division of Medicinal & Pharmaceutical Chemistry , Jadavpur University , Kolkata , India
| | - T Jha
- b Natural Science Laboratory, Department of Pharmaceutical Technology, Division of Medicinal & Pharmaceutical Chemistry , Jadavpur University , Kolkata , India
| | - S Gayen
- a Laboratory of Drug Design and Discovery, Department of Pharmaceutical Sciences , Dr. Harisingh Gour University , Madhya Pradesh , India
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Acharya K, Werner D, Dolfing J, Barycki M, Meynet P, Mrozik W, Komolafe O, Puzyn T, Davenport RJ. A quantitative structure-biodegradation relationship (QSBR) approach to predict biodegradation rates of aromatic chemicals. WATER RESEARCH 2019; 157:181-190. [PMID: 30953853 DOI: 10.1016/j.watres.2019.03.086] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/21/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
The objective of this work was to develop a QSBR model for the prioritization of organic pollutants based on biodegradation rates from a database containing globally harmonized biodegradation tests using relevant molecular descriptors. To do this, we first categorized the chemicals into three groups (Group 1: simple aromatic chemicals with a single ring, Group 2: aromatic chemicals with multiple rings and Group3: Group 1 plus Group 2) based on molecular descriptors, estimated the first order biodegradation rate of the chemicals using rating values derived from the BIOWIN3 model, and finally developed, validated and defined the applicability domain of models for each group using a multiple linear regression approach. All the developed QSBR models complied with OECD principles for QSAR validation. The biodegradation rate in the models for the two groups (Group 2 and 3 chemicals) are associated with abstract molecular descriptors that provide little relevant practical information towards understanding the relationship between chemical structure and biodegradation rates. However, molecular descriptors associated with the QSBR model for Group 1 chemicals (R2 = 0.89, Q2loo = 0.87) provided information on properties that can readily be scrutinised and interpreted in relation to biodegradation processes. In combination, these results lead to the conclusion that QSBRs can be an alternative tool to estimate the persistence of chemicals, some of which can provide further insights into those factors affecting biodegradation.
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Affiliation(s)
- Kishor Acharya
- School of Engineering, Cassie Building, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom.
| | - David Werner
- School of Engineering, Cassie Building, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom
| | - Jan Dolfing
- School of Engineering, Cassie Building, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom
| | - Maciej Barycki
- Laboratory of Environmental Chemometrics, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Paola Meynet
- School of Engineering, Cassie Building, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom
| | - Wojciech Mrozik
- School of Engineering, Cassie Building, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom
| | - Oladapo Komolafe
- School of Engineering, Cassie Building, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom
| | - Tomasz Puzyn
- Laboratory of Environmental Chemometrics, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308, Gdańsk, Poland
| | - Russell J Davenport
- School of Engineering, Cassie Building, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom
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Silva DR, Barigye SJ, Santos-Garcia L, Fontes Ferreira da Cunha E. Molecular Modelling of Potential Candidates for the Treatment of Depression. Mol Inform 2019; 38:e1900024. [PMID: 31131991 DOI: 10.1002/minf.201900024] [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: 02/15/2019] [Accepted: 05/07/2019] [Indexed: 12/22/2022]
Abstract
A lot of research initiatives in the last decades have been focused on the search of new strategies to treat depression. However, despite the availability of various antidepressants, current treatment is still far from ideal. Unwanted side effects, modest response rates and the slow onset of action are the main shortcomings. As a strategy to improve symptomatic relief and response rates, the dual modulation of the serotonin transporter and the histamine H3 receptor by a single chemical entity has been proposed in the literature. Accordingly, this work aims to elucidate key structural features responsible for the dual inhibitory activity of the hexahydro-pyrrolo-isoquinoline derivatives. For this purpose, two approaches were employed, four-dimensional quantitative structure-activity relationship (4D-QSAR) and molecular docking. The 4D-QSAR models for both receptors allowed the identification of the pharmacophore groups critical for the modelled biological activity, whereas the binding mode of this class of compounds to the human serotonin transporter was assessed by molecular docking. The findings can be applicable to design new antidepressants.
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Affiliation(s)
- Daniela Rodrigues Silva
- Department of Chemistry, Universidade Federal de Lavras, P.O. Box 3037, 37200-000, Lavras, MG, Brazil
| | - Stephen J Barigye
- Department of Chemistry, McGill University, 801 Sherbrooke Street W., Montréal, QC, Canada, H3 A 0B8
| | - Letícia Santos-Garcia
- Department of Chemistry, Universidade Federal de Lavras, P.O. Box 3037, 37200-000, Lavras, MG, Brazil
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Moghaddam MR, Ghasemi JB, Norouzi P, Salehnia F. Simultaneous determination of dihydroxybenzene isomers at nitrogen-doped graphene surface using fast Fourier transform square wave voltammetry and multivariate calibration. Microchem J 2019. [DOI: 10.1016/j.microc.2018.11.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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33
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Yousefinejad S, Mahboubifar M, Rasekh S. Prediction of different antibacterial activity in a new set of formyl hydroxyamino derivatives with potent action on peptide deformylase using structural information. Struct Chem 2018. [DOI: 10.1007/s11224-018-1242-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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Cardoso‐Silva J, Papadatos G, Papageorgiou LG, Tsoka S. Optimal Piecewise Linear Regression Algorithm for QSAR Modelling. Mol Inform 2018; 38:e1800028. [DOI: 10.1002/minf.201800028] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 08/02/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Jonathan Cardoso‐Silva
- Department of Informatics, Faculty of Natural and Mathematical SciencesKing's College London, Bush House London WC2B 4BG UK
| | - George Papadatos
- European Molecular Biology Laboratory – European Bioinformatics InstituteWellcome Trust Genome Campus Hinxton, Cambridge CB10 1SD UK
- GlaxoSmithKline Gunnels Wood Road Stevenage, Hertfordshire SG1 2NY UK
| | - Lazaros G. Papageorgiou
- Centre for Process Systems Engineering, Department of Chemical EngineeringUniversity College London Torrington Place London WC1E 7JE UK
| | - Sophia Tsoka
- Department of Informatics, Faculty of Natural and Mathematical SciencesKing's College London, Bush House London WC2B 4BG UK
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35
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Efficient prediction of water vapor adsorption capacity in porous metal–organic framework materials: ANN and ANFIS modeling. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1476-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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36
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In Silico SAR Studies of HIV-1 Inhibitors. Pharmaceuticals (Basel) 2018; 11:ph11030069. [PMID: 30011783 PMCID: PMC6160994 DOI: 10.3390/ph11030069] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 07/01/2018] [Accepted: 07/02/2018] [Indexed: 11/17/2022] Open
Abstract
Quantitative Structure Activity Relationships (QSAR or SAR) have helped scientists to establish mathematical relationships between molecular structures and their biological activities. In the present article, SAR studies have been carried out on 89 tetrahydroimidazo[4,5,1-jk][1,4]benzodiazepine (TIBO) derivatives using different classifiers, such as support vector machines, artificial neural networks, random forests, and decision trees. The goal is to propose classification models that will be able to classify TIBO compounds into two groups: high and low inhibitors of HIV-1 reverse transcriptase. Each molecular structure was encoded by 10 descriptors. To check the validity of the established models, all of them were subjected to various validation tests: internal validation, Y-randomization, and external validation. The established classification models have been successful. The correct classification rates reached 100% and 90% in the learning and test sets, respectively. Finally, molecular docking analysis was carried out to understand the interactions between reverse transcriptase enzyme and the TIBO compounds studied. Hydrophobic and hydrogen bond interactions led to the identification of active binding sites. The established models could help scientists to predict the inhibition activity of untested compounds or of novel molecules prior to their synthesis. Therefore, they could reduce the trial and error process in the design of human immunodeficiency virus (HIV) inhibitors.
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Karlberg M, von Stosch M, Glassey J. Exploiting mAb structure characteristics for a directed QbD implementation in early process development. Crit Rev Biotechnol 2018. [DOI: 10.1080/07388551.2017.1421899] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Micael Karlberg
- School of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle upon Tyne, UK
| | - Moritz von Stosch
- School of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle upon Tyne, UK
| | - Jarka Glassey
- School of Chemical Engineering and Advanced Materials, Newcastle University, Newcastle upon Tyne, UK
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38
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Predicting the cradle-to-gate environmental impact of chemicals from molecular descriptors and thermodynamic properties via mixed-integer programming. Comput Chem Eng 2018. [DOI: 10.1016/j.compchemeng.2017.09.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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39
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Moghaddam MR, Norouzi P, Ghasemi JB. Simultaneous sensitive determination of benzenediol isomers using multiwall carbon nanotube–ionic liquid modified carbon paste electrode by a combination of artificial neural network and fast Fourier transform admittance voltammetry. NEW J CHEM 2018. [DOI: 10.1039/c7nj04073c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel electrochemical method for the simultaneous determination of catechol, hydroquinone, and resorcinol.
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Affiliation(s)
- Mohammad Reza Moghaddam
- Center of Excellence in Electrochemistry, University of Tehran
- Tehran
- Iran
- Faculty of Chemistry, University of Tehran
- Tehran
| | - Parviz Norouzi
- Center of Excellence in Electrochemistry, University of Tehran
- Tehran
- Iran
- Endocrinology & Metabolism Research Center, Tehran University of Medical Sciences
- Tehran
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40
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Tromelin A, Chabanet C, Audouze K, Koensgen F, Guichard E. Multivariate statistical analysis of a large odorants database aimed at revealing similarities and links between odorants and odors. FLAVOUR FRAG J 2017. [DOI: 10.1002/ffj.3430] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Anne Tromelin
- UMR CSGA: CNRS, INRA; Université de Bourgogne Franche-Comté; 21000 Dijon France
| | - Claire Chabanet
- UMR CSGA: CNRS, INRA; Université de Bourgogne Franche-Comté; 21000 Dijon France
| | - Karine Audouze
- MTi, Sorbonne Paris Cité; Université Paris Diderot; INSERM UMR-S 973 75013 Paris France
| | - Florian Koensgen
- UMR CSGA: CNRS, INRA; Université de Bourgogne Franche-Comté; 21000 Dijon France
| | - Elisabeth Guichard
- UMR CSGA: CNRS, INRA; Université de Bourgogne Franche-Comté; 21000 Dijon France
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Abstract
The 2017 Faraday Discussion on the topic of "Catalysis for Fuels" was unique in the sense that it was the first Faraday Discussion to be held on the continent of Africa. "Catalysis" and "Fuels" are both topics that could be widely interpreted and the session topics proved to be a relevant spread of old and new i.e. Fischer-Tropsch chemistry, biomass refining, zeolite conversions and photocatalysis. Most of the papers were underpinned by fundamental studies, catalyst design approaches, reports of in operando characterization and detailed speciation and micro kinetic analyses. Examples of commercial application were offered under the headings of biomass conversion, Fischer-Tropsch and to some extent photocatalysis. Cognisance was given to the increasingly important role of catalytic metals in terms of scarcity, cost and environmental impact. The potential role of novel alloys in addressing some of the catalytic mechanistic challenges turned out to be one of the central themes during the discussions. The following remarks are an attempt to draw parallels between the topics under discussion and the author's subjective view of current universal questions that could/should be highlighted under the "Catalysis for Fuels" heading.
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Affiliation(s)
- P Gibson
- Group Technology, Sasol South Africa (Pty) Ltd, South Africa.
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42
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Zhao X, Pan Y, Jiang J, Xu S, Jiang J, Ding L. Thermal Hazard of Ionic Liquids: Modeling Thermal Decomposition Temperatures of Imidazolium Ionic Liquids via QSPR Method. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b04762] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xinyue Zhao
- Jiangsu Key Laboratory of
Hazardous Chemicals Safety and Control, College of Safety Science
and Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Yong Pan
- Jiangsu Key Laboratory of
Hazardous Chemicals Safety and Control, College of Safety Science
and Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Juncheng Jiang
- Jiangsu Key Laboratory of
Hazardous Chemicals Safety and Control, College of Safety Science
and Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Shuangyan Xu
- Jiangsu Key Laboratory of
Hazardous Chemicals Safety and Control, College of Safety Science
and Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Jiajia Jiang
- Jiangsu Key Laboratory of
Hazardous Chemicals Safety and Control, College of Safety Science
and Engineering, Nanjing Tech University, Nanjing 210009, China
| | - Li Ding
- Jiangsu Key Laboratory of
Hazardous Chemicals Safety and Control, College of Safety Science
and Engineering, Nanjing Tech University, Nanjing 210009, China
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43
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Liang Y, Qin D, Zhang Y, Liu W, Liang G. Comprehensive Interactions of ACE Inhibitors With Their Receptor by a Support Vector Machine Model and Molecular Docking. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201600803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ya'nan Liang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, School of Bioengineering; Chongqing University; Chongqing 400044 P. R. China
| | - Dongya Qin
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, School of Bioengineering; Chongqing University; Chongqing 400044 P. R. China
| | - Yonghong Zhang
- Medicine Engineering Research Center & School of Pharmacy; Chongqing Medical University; Chongqing 400016 P. R. China
| | - Wanqian Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, School of Bioengineering; Chongqing University; Chongqing 400044 P. R. China
| | - Guizhao Liang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, School of Bioengineering; Chongqing University; Chongqing 400044 P. R. China
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44
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Peng Y, Li G, Zhou M, Wang H, Lin L. Dynamic spectrum extraction method based on independent component analysis combined dual-tree complex wavelet transform. RSC Adv 2017. [DOI: 10.1039/c6ra28647j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The proposed new dynamic spectrum (DS) extraction method based on ICA combined DTCWT could improve the precision accuracy of non-invasive measurement of blood components effectively.
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Affiliation(s)
- Yao Peng
- State Key Laboratory of Precision Measurement Technology and Instruments
- Tianjin University
- Tianjin 300072
- China
- Tianjin Key Laboratory of Biomedical Detecting Techniques & Instruments
| | - Gang Li
- State Key Laboratory of Precision Measurement Technology and Instruments
- Tianjin University
- Tianjin 300072
- China
- Tianjin Key Laboratory of Biomedical Detecting Techniques & Instruments
| | - Mei Zhou
- Shanghai Key Laboratory of Multidimensional Information Processing
- East China Normal University
- Shanghai 200241
- China
| | - Huaile Wang
- State Key Laboratory of Precision Measurement Technology and Instruments
- Tianjin University
- Tianjin 300072
- China
- Tianjin Key Laboratory of Biomedical Detecting Techniques & Instruments
| | - Ling Lin
- State Key Laboratory of Precision Measurement Technology and Instruments
- Tianjin University
- Tianjin 300072
- China
- Tianjin Key Laboratory of Biomedical Detecting Techniques & Instruments
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45
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Chen M, Yang F, Kang J, Yang X, Lai X, Gao Y. Multi-Layer Identification of Highly-Potent ABCA1 Up-Regulators Targeting LXRβ Using Multiple QSAR Modeling, Structural Similarity Analysis, and Molecular Docking. Molecules 2016; 21:molecules21121639. [PMID: 27916850 PMCID: PMC6273961 DOI: 10.3390/molecules21121639] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 11/21/2016] [Accepted: 11/26/2016] [Indexed: 12/19/2022] Open
Abstract
In this study, in silico approaches, including multiple QSAR modeling, structural similarity analysis, and molecular docking, were applied to develop QSAR classification models as a fast screening tool for identifying highly-potent ABCA1 up-regulators targeting LXRβ based on a series of new flavonoids. Initially, four modeling approaches, including linear discriminant analysis, support vector machine, radial basis function neural network, and classification and regression trees, were applied to construct different QSAR classification models. The statistics results indicated that these four kinds of QSAR models were powerful tools for screening highly potent ABCA1 up-regulators. Then, a consensus QSAR model was developed by combining the predictions from these four models. To discover new ABCA1 up-regulators at maximum accuracy, the compounds in the ZINC database that fulfilled the requirement of structural similarity of 0.7 compared to known potent ABCA1 up-regulator were subjected to the consensus QSAR model, which led to the discovery of 50 compounds. Finally, they were docked into the LXRβ binding site to understand their role in up-regulating ABCA1 expression. The excellent binding modes and docking scores of 10 hit compounds suggested they were highly-potent ABCA1 up-regulators targeting LXRβ. Overall, this study provided an effective strategy to discover highly potent ABCA1 up-regulators.
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Affiliation(s)
- Meimei Chen
- College of Chemistry and Chemical Engineering, Fujian Normal University, Fuzhou 350007, Fujian, China.
- College of Traditional Chinese Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian, China.
| | - Fafu Yang
- College of Chemistry and Chemical Engineering, Fujian Normal University, Fuzhou 350007, Fujian, China.
| | - Jie Kang
- College of Traditional Chinese Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian, China.
| | - Xuemei Yang
- College of Traditional Chinese Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian, China.
| | - Xinmei Lai
- College of Traditional Chinese Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian, China.
| | - Yuxing Gao
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China.
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46
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Shawky E. Multivariate analyses of NP-TLC chromatographic retention data for grouping of structurally-related plant secondary metabolites. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1029-1030:10-15. [DOI: 10.1016/j.jchromb.2016.06.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 06/08/2016] [Accepted: 06/21/2016] [Indexed: 11/30/2022]
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47
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Paduszyński K. In Silico Calculation of Infinite Dilution Activity Coefficients of Molecular Solutes in Ionic Liquids: Critical Review of Current Methods and New Models Based on Three Machine Learning Algorithms. J Chem Inf Model 2016; 56:1420-37. [DOI: 10.1021/acs.jcim.6b00166] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Kamil Paduszyński
- Department of Physical
Chemistry, Faculty of Chemistry Warsaw University of Technology, Noakowskiego
3, 00-664 Warsaw, Poland
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48
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Sharma V, Kumar H, Wakode S. Pharmacophore generation and atom based 3D-QSAR of quinoline derivatives as selective phosphodiesterase 4B inhibitors. RSC Adv 2016. [DOI: 10.1039/c6ra11210b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Reported PDE4B inhibitors were used to design QSAR based pharmacophore model. Using developed pharmacophore model, virtual screening was performed followed by cross-docking to identify novel PDE4B specific inhibitors.
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Affiliation(s)
- Vidushi Sharma
- Department of Pharmaceutical Chemistry
- Delhi Institute of Pharmaceutical Sciences and Research (DIPSAR)
- University of Delhi
- New Delhi – 110017
- India
| | - Hirdesh Kumar
- Parasitology – Center for Infectious Diseases
- University of Heidelberg Medical School
- 69120 Heidelberg
- Germany
| | - Sharad Wakode
- Department of Pharmaceutical Chemistry
- Delhi Institute of Pharmaceutical Sciences and Research (DIPSAR)
- University of Delhi
- New Delhi – 110017
- India
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49
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Zhou W, Fan Y, Cai X, Xiang Y, Jiang P, Dai Z, Chen Y, Tan S, Yuan Z. High-accuracy QSAR models of narcosis toxicities of phenols based on various data partition, descriptor selection and modelling methods. RSC Adv 2016. [DOI: 10.1039/c6ra21076g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The environmental protection agency thinks that quantitative structure–activity relationship (QSAR) analysis can better replace toxicity tests.
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Affiliation(s)
- Wei Zhou
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests
- Hunan Agricultural University
- Changsha 410128
- P. R. China
- Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization
| | - Yanjun Fan
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests
- Hunan Agricultural University
- Changsha 410128
- P. R. China
| | - Xunhui Cai
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests
- Hunan Agricultural University
- Changsha 410128
- P. R. China
| | - Yan Xiang
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests
- Hunan Agricultural University
- Changsha 410128
- P. R. China
| | - Peng Jiang
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests
- Hunan Agricultural University
- Changsha 410128
- P. R. China
| | - Zhijun Dai
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests
- Hunan Agricultural University
- Changsha 410128
- P. R. China
| | - Yuan Chen
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests
- Hunan Agricultural University
- Changsha 410128
- P. R. China
| | - Siqiao Tan
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests
- Hunan Agricultural University
- Changsha 410128
- P. R. China
| | - Zheming Yuan
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests
- Hunan Agricultural University
- Changsha 410128
- P. R. China
- Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Utilization
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