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Boukelkal N, Rahal S, Rebhi R, Hamadache M. QSPR for the prediction of critical micelle concentration of different classes of surfactants using machine learning algorithms. J Mol Graph Model 2024; 129:108757. [PMID: 38503002 DOI: 10.1016/j.jmgm.2024.108757] [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: 10/27/2023] [Revised: 03/07/2024] [Accepted: 03/10/2024] [Indexed: 03/21/2024]
Abstract
The determination of the critical micelle concentration (CMC) is a crucial factor when evaluating surfactants, making it an essential tool in studying the properties of surfactants in various industrial fields. In this present research, we assembled a comprehensive set of 593 different classes of surfactants including, anionic, cationic, nonionic, zwitterionic, and Gemini surfactants to establish a link between their molecular structure and the negative logarithmic value of critical micelle concentration (pCMC) utilizing quantitative structure-property relationship (QSPR) methodologies. Statistical analysis revealed that a set of 14 significant Mordred descriptors (SlogP, GATS6d, nAcid, GATS8dv, GATS4dv, PEOE_VSA11, GATS8d, ATS0p, GATS1d, MATS5p, GATS3d, NdssC, GATS6dv and EState_VSA4), along with temperature, served as appropriate inputs. Different machine learning methods, such as multiple linear regression (MLR), random forest regression (RFR), artificial neural network (ANN), and support vector regression (SVM), were employed in this study to build QSPR models. According to the statistical coefficients of QSPR models, SVR with Dragonfly hyperparameter optimization (SVR-DA) was the most accurate in predicting pCMC values, achieving (R2 = 0.9740, Q2 = 0.9739, r‾m2 = 0.9627, and Δrm2 = 0.0244) for the entire dataset.
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Affiliation(s)
- Nada Boukelkal
- Biomaterials and Transport Phenomena Laboratory (LBMPT), University of Yahia Fares, Faculty of Technology, Department of Process Engineering and Environment, Medea, 26000, Algeria.
| | - Soufiane Rahal
- Biomaterials and Transport Phenomena Laboratory (LBMPT), University of Yahia Fares, Faculty of Technology, Department of Process Engineering and Environment, Medea, 26000, Algeria
| | - Redha Rebhi
- Biomaterials and Transport Phenomena Laboratory (LBMPT), University of Yahia Fares, Faculty of Technology, Department of Process Engineering and Environment, Medea, 26000, Algeria
| | - Mabrouk Hamadache
- Biomaterials and Transport Phenomena Laboratory (LBMPT), University of Yahia Fares, Faculty of Technology, Department of Process Engineering and Environment, Medea, 26000, Algeria
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Shahi A, Vafaei Molamahmood H, Faraji N, Long M. Quantitative structure-activity relationship for the oxidation of organic contaminants by peracetic acid using GA-MLR method. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 310:114747. [PMID: 35196632 DOI: 10.1016/j.jenvman.2022.114747] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/06/2022] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
Peracetic acid (PAA) is considered as an effective and powerful oxidant for eliminating organic contaminants in wastewater treatment. The second-order rate constant (kapp) for the reaction of PAA with organic contaminants is practically important for evaluating their removal efficiency in wastewater treatment, but only limited numbers of kapp values are available. In this study, 70 organic compounds with various structures were selected, and the kapp of PAA with each organic compound was used to develop two quantitative structure-activity relationship (QSAR) models based on three kinds of descriptors including constitutional, quantum chemical, and the PaDEL descriptors. The genetic algorithm (GA) was applied to select the molecular descriptors, then the models developed by multiple linear regression (MLR). The most important descriptors that explain the reactivity of organic compounds with PAA are the EHOMO for the model with the constitutional and quantum chemical descriptors. The maxHdsCH and minHdCH2 are two most important descriptors for the model with only PaDEL descriptors. The developed models can be used to predict kapp for a wide range of organic contaminants. The accuracy of the developed models was proved by the internal, external validation and the Y-scrambling technique. The developed QSAR models using the GA-MLR method can be used as a screening tool for predicting the elimination of organic contaminants by PAA and increasing the understanding of chemical pollutant fate.
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Affiliation(s)
- Ali Shahi
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hamed Vafaei Molamahmood
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Naser Faraji
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mingce Long
- School of Environmental Science and Engineering, Key Laboratory of Thin Film and Microfabrication Technology (Ministry of Education), Shanghai Jiao Tong University, Shanghai, 200240, China.
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Mozrzymas A. On the hydrophobic chains effect on critical micelle concentration of cationic gemini surfactants using molecular connectivity indices. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02581-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AbstractThe influence of the structure of hydrophobic tail chains on the critical micelle concentration of cationic gemini surfactants, using only the molecular connectivity indices, has been investigated in this work. The best model obtained shows that the relationship between the logarithm of critical micelle concentration and the alkyl chains length is parabolic. The formula has been derived for compounds with the same head groups and the same, medium length, spacer but with various hydrocarbon tail chains. Good-quality QSPR model obtained can be used to predict the critical micelle concentration value of structurally similar gemini surfactants as well as to design the structure of the hydrophobic tail chains to obtain new molecules more active in micelle formation.
Graphic abstract
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Hologram QSAR study on the critical micelle concentration of Gemini surfactants. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124226] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Mozrzymas A. On the Head Group Effect on Critical Micelle Concentration of Cationic Surfactants Using Molecular Connectivity Indices and Atomic Partial Charges. J SOLUTION CHEM 2019. [DOI: 10.1007/s10953-019-00887-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhang R, Wen LY, Wu WS, Yuan XZ, Zhang LJ. Quantitative Structure-Property Relationship for pH-Triggered Drug Release Performance of Acid-Responsive Four/Six-Arms Star Polymeric Micelles. Pharm Res 2018; 36:20. [PMID: 30511187 DOI: 10.1007/s11095-018-2549-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/25/2018] [Indexed: 11/29/2022]
Abstract
PURPOSE The pH-responsive copolymer micelles are widely used as carriers in drug delivery system, but there are few micro-level mechanistically explorations on the pH-triggered drug release. Here we elucidate the relationship between drug release behavior of four/six-arms star copolymer micelles and the copolymer structures. METHOD The net cumulative drug release percentage (En) was taken as the dependent variables, block unit autocorrelation descriptors as independent variables. The quantitative structure-property relationship models of drug release from block copolymers were developed at pH 7.4 and 5.0 of two periods (stage I: 0~12 h, stage II: 12~96 h). RESULTS The models built are of good fitting ability, internal predictive ability, stability and statistically significance. Drug diffusion is mainly influenced by the intra-block force, and micellar erosion by inter-block force. At pH 5.0, lowest unoccupied molecular orbital energy of copolymer unit is the main factor influencing the En. Stage I of drug release is affected by hydrophobic property and stage II by regional polar of copolymer molecules. CONCLUSION The models present good performance, factors affecting drug release behavior at different pH conditions can offer guidance for the design of copolymer structures to control the drug release behavior of micelles in a targeted and quantitatively way.
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Affiliation(s)
- Ran Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510000, People's Republic of China
| | - Li-Yang Wen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510000, People's Republic of China
| | - Wen-Sheng Wu
- School of Chemistry and Chemical Engineering, Zhaoqing University, Zhaoqing, 526000, People's Republic of China
| | - Xiao-Zhe Yuan
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510000, People's Republic of China
| | - Li-Juan Zhang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510000, People's Republic of China.
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Diverse classes of HDAC8 inhibitors: in search of molecular fingerprints that regulate activity. Future Med Chem 2018; 10:1589-1602. [PMID: 29953251 DOI: 10.4155/fmc-2018-0005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
AIM HDAC8 is one of the crucial enzymes involved in malignancy. Structural explorations of HDAC8 inhibitory activity and selectivity are required. MATERIALS & METHODS A mathematical framework was constructed to explore important molecular fragments responsible for HDAC8 inhibition. Bayesian classification models were developed on a large set of structurally diverse HDAC8 inhibitors. RESULTS This study helps to understand the structural importance of HDAC8 inhibitors. The hydrophobic aryl cap function is important for HDAC8 inhibition whereas benzamide moiety shows a negative impact on HDAC8 inhibition. CONCLUSION This work validates our previously proposed structural features for better HDAC8 inhibition. The comparative learning between the statistical and intelligent methods will surely enrich future drug design aspects of HDAC8 inhibitors.
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First report on the structural exploration and prediction of new BPTES analogs as glutaminase inhibitors. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.04.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Which structural features stand behind micelization of ionic liquids? Quantitative Structure-Property Relationship studies. J Colloid Interface Sci 2017; 487:475-483. [DOI: 10.1016/j.jcis.2016.10.066] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/20/2016] [Accepted: 10/24/2016] [Indexed: 12/15/2022]
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Abstract
Descriptors are one of the most essential components of predictive Quantitative Structure-Activity/Property/Toxicity Relationship (QSAR/QSPR/QSTR) modeling analysis, as they encode chemical information of molecules in the form of quantitative numbers, which are used to develop mathematical correlation models. The quality of a predictive model not only depends on good modeling statistics, but also on the extraction of chemical features. A significant amount of research since the beginning of QSAR analysis paradigm has led to the introduction of a large number of predictor variables or descriptors. The Extended Topochemical Atom (ETA) indices, developed by the authors' group, successfully address the aspects of molecular topology, electronic information, and different types of bonded interactions, and have been extensively employed for the modeling of different types of activity/property and toxicity endpoints. This chapter provides explicit information regarding the basis, algorithm, and applicability of the ETA indices for a predictive modeling paradigm.
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Molecular connectivity indices for modeling the critical micelle concentration of cationic (chloride) Gemini surfactants. Colloid Polym Sci 2016; 295:75-87. [PMID: 28111493 PMCID: PMC5209406 DOI: 10.1007/s00396-016-3979-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 10/12/2016] [Accepted: 10/13/2016] [Indexed: 11/15/2022]
Abstract
The molecular connectivity indices were used to derive the simple model relating the critical micelle concentration of cationic (chloride) gemini surfactants to their structure. One index was selected as the best to describe the effect of the structure of investigated compounds on critical micelle concentration consistent with the experimental results. This index encodes the information about molecular size, the branches, and also the information about heteroatoms. The selected model can be helpful in designing novel chloride gemini surfactants.
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Roy K, Das RN. The “ETA” Indices in QSAR/QSPR/QSTR Research. QUANTITATIVE STRUCTURE-ACTIVITY RELATIONSHIPS IN DRUG DESIGN, PREDICTIVE TOXICOLOGY, AND RISK ASSESSMENT 2015. [DOI: 10.4018/978-1-4666-8136-1.ch002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Descriptors are one of the most essential components of predictive Quantitative Structure-Activity/Property/Toxicity Relationship (QSAR/QSPR/QSTR) modeling analysis, as they encode chemical information of molecules in the form of quantitative numbers, which are used to develop mathematical correlation models. The quality of a predictive model not only depends on good modeling statistics, but also on the extraction of chemical features. A significant amount of research since the beginning of QSAR analysis paradigm has led to the introduction of a large number of predictor variables or descriptors. The Extended Topochemical Atom (ETA) indices, developed by the authors' group, successfully address the aspects of molecular topology, electronic information, and different types of bonded interactions, and have been extensively employed for the modeling of different types of activity/property and toxicity endpoints. This chapter provides explicit information regarding the basis, algorithm, and applicability of the ETA indices for a predictive modeling paradigm.
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13
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Figueira-González M, Francisco V, García-Río L, Marques EF, Parajó M, Rodríguez-Dafonte P. Self-Aggregation Properties of Ionic Liquid 1,3-Didecyl-2-methylimidazolium Chloride in Aqueous Solution: From Spheres to Cylinders to Bilayers. J Phys Chem B 2013; 117:2926-37. [DOI: 10.1021/jp3117962] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- María Figueira-González
- Centro Singular de Investigación
en Química Biológica y Materiales Moleculares, Department
of Physical Chemistry, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Vitor Francisco
- Centro Singular de Investigación
en Química Biológica y Materiales Moleculares, Department
of Physical Chemistry, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Luis García-Río
- Centro Singular de Investigación
en Química Biológica y Materiales Moleculares, Department
of Physical Chemistry, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Eduardo F. Marques
- Centro de Investigação
em Química, Department of Chemistry and Biochemistry, Faculty
of Sciences, University of Porto, Rua do
Campo Alegre, 687, 4169-007 Porto, Portugal
| | - Mercedes Parajó
- Centro Singular de Investigación
en Química Biológica y Materiales Moleculares, Department
of Physical Chemistry, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Pedro Rodríguez-Dafonte
- Centro Singular de Investigación
en Química Biológica y Materiales Moleculares, Department
of Physical Chemistry, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
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