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Salluce G, Folgar-Cameán Y, Barba-Bon A, Nikšić-Franjić I, El Anwar S, Grüner B, Lostalé-Seijo I, Nau WM, Montenegro J. Size and Polarizability of Boron Cluster Carriers Modulate Chaotropic Membrane Transport. Angew Chem Int Ed Engl 2024; 63:e202404286. [PMID: 38712936 DOI: 10.1002/anie.202404286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Revised: 04/24/2024] [Accepted: 05/02/2024] [Indexed: 05/08/2024]
Abstract
Perhalogenated closo-borates represent a new class of membrane carriers. They owe this activity to their chaotropicity, which enables the transport of hydrophilic molecules across model membranes and into living cells. The transport efficiency of this new class of cluster carriers depends on a careful balance between their affinity to membranes and cargo, which varies with chaotropicity. However, the structure-activity parameters that define chaotropic transport remain to be elucidated. Here, we have studied the modulation of chaotropic transport by decoupling the halogen composition from the boron core size. The binding affinity between perhalogenated decaborate and dodecaborate clusters carriers was quantified with different hydrophilic model cargos, namely a neutral and a cationic peptide, phalloidin and (KLAKLAK)2. The transport efficiency, membrane-lytic properties, and cellular toxicity, as obtained from different vesicle and cell assays, increased with the size and polarizability of the clusters. These results validate the chaotropic effect as the driving force behind the membrane transport propensity of boron clusters. This work advances our understanding of the structural features of boron cluster carriers and establishes the first set of rational design principles for chaotropic membrane transporters.
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Affiliation(s)
- Giulia Salluce
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15705, Santiago de Compostela, Spain
| | - Yeray Folgar-Cameán
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15705, Santiago de Compostela, Spain
| | - Andrea Barba-Bon
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Ivana Nikšić-Franjić
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Suzan El Anwar
- Institute of Inorganic Chemistry, Czech Academy of Sciences, v.v.i. Hlavní 1001, CZ-250 68, Řež, Czech Republic
| | - Bohumír Grüner
- Institute of Inorganic Chemistry, Czech Academy of Sciences, v.v.i. Hlavní 1001, CZ-250 68, Řež, Czech Republic
| | - Irene Lostalé-Seijo
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15705, Santiago de Compostela, Spain
| | - Werner M Nau
- School of Science, Constructor University, Campus Ring 1, 28759, Bremen, Germany
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Departamento de Química Orgánica, Universidade de Santiago de Compostela, 15705, Santiago de Compostela, Spain
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Oluwafemi KA, Oyeneyin OE, Babatunde DD, Agbaffa EB, Aigbogun JA, Odeja OO, Emmanuel AV. Parasitic Protozoans: Exploring the Potential of N,N'-Bis[2-(5-bromo-7-azabenzimidazol-1-yl)-2-oxoethyl]ethylene-1,3-Diamine and Its Cyclohexyl-1,2-diamine Analogue as TryR and Pf-DHODH Inhibitors. Acta Parasitol 2023; 68:807-819. [PMID: 37821729 DOI: 10.1007/s11686-023-00719-5] [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: 06/17/2022] [Accepted: 08/26/2023] [Indexed: 10/13/2023]
Abstract
PURPOSE Major human parasitic protozoans, such as Plasmodium falciparum and Trypanosoma brucei, cause malaria and trypanosomiasis also known as sleeping sickness. In anti-parasitic drug discovery research, trypanothione reductase (TryR) and P. falciparum dihydroorotate dehydrogenase (Pf-DHODH) enzymes are key drug targets in T. brucei and P. falciparum, respectively. The possibility of co-infection of single host by T. brucei and P. falciparum is because both parasites exist in sub-Saharan Africa and the problem of parasite drug resistance necessitates the discovery of new scaffolds, which are strange to the organisms causing these infectious diseases-new scaffolds may help overcome established resistance mechanisms of the organisms. METHOD In this study, N,N'-bis[2-(5-bromo-7-azabenzimidazol-1-yl)-2-oxoethyl]ethylene-1,3-diamine and its cyclohexyl-1,2-diamine analogue were explored for their inhibitory potential against TryR and Pf-DHODH by engaging density functional study, molecular dynamic simulations, drug-likeness, in silico and in vitro studies RESULTS/CONCLUSION: Results obtained indicated excellent binding potential of the ligands to the receptors and good ADMET (adsorption, desorption, metabolism, excretion, and toxicity) properties.
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Affiliation(s)
- Kola A Oluwafemi
- Department of Chemical Sciences, Adekunle Ajasin University, Akungba-Akoko, Nigeria.
| | - Oluwatoba E Oyeneyin
- Department of Chemical Sciences, Adekunle Ajasin University, Akungba-Akoko, Nigeria.
- Theoretical and Computational Chemistry Unit, Adekunle Ajasin University, Akungba-Akoko, Nigeria.
| | | | - Eric B Agbaffa
- Department of Chemistry, Federal University of Technology, Akure, Nigeria
- Department of Physical Sciences, Wesley University, Ondo, Nigeria
| | - Jane A Aigbogun
- Department of Chemistry, Federal University of Technology, Akure, Nigeria
| | - Oluwakayode O Odeja
- Department of Chemistry, Federal University of Petroleum Recourses, Effurun, Nigeria
| | - Abiodun V Emmanuel
- Department of Chemical Sciences, Adekunle Ajasin University, Akungba-Akoko, Nigeria
- Theoretical and Computational Chemistry Unit, Adekunle Ajasin University, Akungba-Akoko, Nigeria
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Varela MT, Romanelli M, Amaral M, Tempone AG, Fernandes JPS. Piperazine amides with desirable solubility, physicochemical and drug-like properties: Synthesis and evaluation of the anti- Trypanosoma cruzi activity. Saudi Pharm J 2023; 31:1265-1273. [PMID: 37287509 PMCID: PMC10242637 DOI: 10.1016/j.jsps.2023.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 05/12/2023] [Indexed: 06/09/2023] Open
Abstract
The absence of effective chronic treatment, expansion to non-endemic countries and the significant burden in public health have stimulated the search for novel therapeutic options to treat Chagas disease, a protozoan disease caused by Trypanosoma cruzi. Despite current efforts, no new drug candidates were approved in clinical trials in the past five decades. Considering this, our group has focused on the expansion of a series (LINS03) with low micromolar activity against amastigotes, considering the optimization of pharmacokinetic properties through increasing drug-likeness and solubility. In this work, we report a new set of 13 compounds with modifications in both the arylpiperazine and the aromatic region linked by an amide group. Five analogues showed activity against intracellular amastigotes (IC50 17.8 to 35.9 µM) and no relevant cytotoxicity to mammalian cells (CC50 > 200 µM). Principal component analysis (PCA) was performed to identify structural features associated to improved activity. The data revealed that polarity, hydrogen bonding ability and flexibility were key properties that influenced the antiparasitic activity. In silico drug-likeness assessments indicated that compounds with the 4-methoxycinammyl (especially compound 2b) had the most prominent balance between properties and activity in the series, as confirmed by SAR analysis.
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Affiliation(s)
- Marina T. Varela
- Departamento de Medicina, Universidade Federal de São Paulo, Rua Botucatu 740, 04023-062 São Paulo, SP, Brazil
- Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo, Rua São Nicolau 210, 09913-030 Diadema, SP, Brazil
| | - Maiara Romanelli
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, Av. Dr. Arnaldo 351, 01246-000 São Paulo, SP, Brazil
| | - Maiara Amaral
- Faculdade de Medicina, Universidade de São Paulo, São Paulo 05403-000, Brazil
| | - Andre G. Tempone
- Centre for Parasitology and Mycology, Instituto Adolfo Lutz, Av. Dr. Arnaldo 351, 01246-000 São Paulo, SP, Brazil
| | - João Paulo S. Fernandes
- Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo, Rua São Nicolau 210, 09913-030 Diadema, SP, Brazil
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Tandon H, Ranjan P, Chakraborty T. A computational and theoretical study of some heavy metal heteronuclear dimers. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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NAZİB ALİAS A, MOHAMED ZABİDİ Z. QSAR Studies on Nitrobenzene Derivatives using Hyperpolarizability and Conductor like Screening model as Molecular Descriptors. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2022. [DOI: 10.18596/jotcsa.1083840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Quantitative structure-activity relationship (QSAR) models were useful in understanding how chemical structure relates to the toxicology of chemicals. In the present study, we report quantum molecular descriptors using conductor like screening model (COs) area, the linear polarizability, first and second order hyperpolarizability for modelling the toxicology of the nitro substituent on the benzene ring. All the molecular descriptors were performed using semi-empirical PM6 approaches. The QSAR model was developed using stepwise multiple linear regression. We found that the stable QSAR modelling of toxicology benzene derivatives used second order hyper-polarizability and COs area, which satisfied the statistical measures. The second order hyperpolarizability shows the best QSAR model. We also discovered that the nitrobenzene derivative’s substitutional functional group has a significant effect on the quantum molecular descriptors, which reflect the QSAR model.
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Ansari WA, Ahamad T, Khan MA, Khan ZA, Khan MF. Exploration of Luteolin as Potential Anti-COVID-19 Agent: Molecular
Docking, Molecular Dynamic Simulation, ADMET and DFT Analysis. LETT DRUG DES DISCOV 2022. [DOI: 10.2174/1570180819666211222151725] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Background:
Coronavirus disease-2019 (COVID-19) has recently emerged as a pandemic
respiratory disease with mild to severe pneumonia symptoms. No clinical antiviral agent is available so
far. However, several repurposing drugs and vaccines are being given to individuals or in clinical trials
against SARS-CoV-2
Objective:
The aim of this study is to uncover the potential effects of Luteolin (Lut) as an inhibitor of
SARS-CoV2 encoded proteins via utilizing computational tools.
Method:
Molecular modelling to unfold the anti-SARS-CoV2 potential of Lut along with reference
drugs namely remdesivir and nafamostat was performed by the use of molecular docking, molecular dynamic
(MD) simulation, absorption, distribution, metabolism, excretion, toxicity (ADMET) and density
functional theory (DFT) methods against the five different SARS-CoV-2 encoded key proteins and one
human receptor protein. The chemical reactivity of Luteolin is done through prediction of HOMO-LUMO
gap energy and other chemical descriptors analysis.
Results:
In the present study, Lut binds effectively in the binding pockets of spike glycoprotein (6VSB),
ADP phosphatase of NSP3 (6W02), and RNA dependent RNA polymerase (7AAP) protein receptors with
significant values of docking scores -7.00, -7.25, and -6.46 respectively as compared to reference drugs
remdesivir and nafamostat.
Conclusion::
Thus, Lut can act as a therapeutic agent and is orally safe for human consumption as predicted
by molecular modelling against SARS-CoV-2 in the treatment of COVID-19.
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Affiliation(s)
- Waseem Ahmad Ansari
- Department of Biotechnology, Era’s Lucknow Medical College & Hospital, Era University, Lucknow 226003, UP,
India
| | - Tanveer Ahamad
- Department of Biotechnology, Era’s Lucknow Medical College & Hospital, Era University, Lucknow 226003, UP,
India
| | - Mohsin Ali Khan
- Department of Biotechnology, Era’s Lucknow Medical College & Hospital, Era University, Lucknow 226003, UP,
India
| | - Zaw Ali Khan
- Department of Biotechnology, Era’s Lucknow Medical College & Hospital, Era University, Lucknow 226003, UP,
India
| | - Mohammad Faheem Khan
- Department of Biotechnology, Era’s Lucknow Medical College & Hospital, Era University, Lucknow 226003, UP,
India
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A study of 5-lipoxygenase inhibitors invoking DFT-based descriptor nucleophilicity index. MONATSHEFTE FUR CHEMIE 2022. [DOI: 10.1007/s00706-022-02953-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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8
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Predicting pharmacokinetic properties of potential anti-cancer agents using micellar thin-layer chromatography. JPC-J PLANAR CHROMAT 2022. [DOI: 10.1007/s00764-022-00174-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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In Silico Antiprotozoal Evaluation of 1,4-Naphthoquinone Derivatives against Chagas and Leishmaniasis Diseases Using QSAR, Molecular Docking, and ADME Approaches. Pharmaceuticals (Basel) 2022; 15:ph15060687. [PMID: 35745607 PMCID: PMC9228275 DOI: 10.3390/ph15060687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 05/24/2022] [Accepted: 05/27/2022] [Indexed: 12/04/2022] Open
Abstract
Chagas and leishmaniasis are two neglected diseases considered as public health problems worldwide, for which there is no effective, low-cost, and low-toxicity treatment for the host. Naphthoquinones are ligands with redox properties involved in oxidative biological processes with a wide variety of activities, including antiparasitic. In this work, in silico methods of quantitative structure–activity relationship (QSAR), molecular docking, and calculation of ADME (absorption, distribution, metabolism, and excretion) properties were used to evaluate naphthoquinone derivatives with unknown antiprotozoal activity. QSAR models were developed for predicting antiparasitic activity against Trypanosoma cruzi, Leishmania amazonensis, and Leishmania infatum, as well as the QSAR model for toxicity activity. Most of the evaluated ligands presented high antiparasitic activity. According to the docking results, the family of triazole derivatives presented the best affinity with the different macromolecular targets. The ADME results showed that most of the evaluated compounds present adequate conditions to be administered orally. Naphthoquinone derivatives show good biological activity results, depending on the substituents attached to the quinone ring, and perhaps the potential to be converted into drugs or starting molecules.
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10
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Tandon H, Yadav P, Chakraborty T, Suhag V. Can chemical reactivity descriptors explain catalytic reactivity? J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122229] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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11
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Guarin M, Ny A, De Croze N, Maes J, Léonard M, Annaert P, de Witte PAM. Pharmacokinetics in Zebrafish Embryos (ZFE) Following Immersion and Intrayolk Administration: A Fluorescence-Based Analysis. Pharmaceuticals (Basel) 2021; 14:ph14060576. [PMID: 34208572 PMCID: PMC8234359 DOI: 10.3390/ph14060576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 06/13/2021] [Indexed: 12/16/2022] Open
Abstract
Zebrafish embryos (ZFE) have increasingly gained in popularity as a model to perform safety screenings of compounds. Although immersion of ZFE is the main route of exposure used, evidence shows that not all small molecules are equally absorbed, possibly resulting in false-negative readouts and incorrect conclusions. In this study, we compared the pharmacokinetics of seven fluorescent compounds with known physicochemical properties that were administered to two-cell stage embryos by immersion or by IY microinjection. Absorption and distribution of the dyes were followed at various timepoints up to 120 hpf by spatiotemporal fluorescence imaging. The concentration (10 µM) and dose (2 mg/kg) used were selected as quantities typically applied in preclinical experiments and zebrafish studies. The data show that in the case of a lipophilic compound (log D: 1.73) the immersion procedure resulted in an intrabody exposure which is similar or higher than that seen after the IY microinjection. In contrast, zero to low intrabody exposure was reached after immersion of the embryos with less lipophilic compounds. In the latter case IY microinjection, a technical procedure that can be easily automated, is highly recommended.
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Affiliation(s)
- Marlly Guarin
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, 3000 Leuven, Belgium; (M.G.); (A.N.); (J.M.)
| | - Annelii Ny
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, 3000 Leuven, Belgium; (M.G.); (A.N.); (J.M.)
| | - Noémie De Croze
- L’Oréal Research & Innovation, 93600 Aulnay-sous-Bois, France; (N.D.C.); (M.L.)
| | - Jan Maes
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, 3000 Leuven, Belgium; (M.G.); (A.N.); (J.M.)
| | - Marc Léonard
- L’Oréal Research & Innovation, 93600 Aulnay-sous-Bois, France; (N.D.C.); (M.L.)
| | - Pieter Annaert
- Drug Delivery and Disposition, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, 3000 Leuven, Belgium
- Correspondence: (P.A.); (P.A.M.d.W.)
| | - Peter A. M. de Witte
- Laboratory for Molecular Biodiscovery, Department of Pharmaceutical and Pharmacological Sciences, University of Leuven, 3000 Leuven, Belgium; (M.G.); (A.N.); (J.M.)
- Correspondence: (P.A.); (P.A.M.d.W.)
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12
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Tandon H, Labarca M, Chakraborty T. A Scale of Atomic Electronegativity Based on Floating Spherical Gaussian Orbital Approach. ChemistrySelect 2021. [DOI: 10.1002/slct.202101142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hiteshi Tandon
- Department of Chemistry Manipal University Jaipur Jaipur 303 007 India
| | - Martín Labarca
- Facultad de Filosofia y Letras Instituto de Filosofia “Doctor Alejandro Korn” CONICET - Universidad de Buenos Aires Puán 481, 4to Piso, Oficina 431 1406 - Ciudad Autónoma de Buenos Aires Argentina
| | - Tanmoy Chakraborty
- Department of Chemistry and Biochemistry School of Basic Sciences and Research Sharda University Greater Noida 201 310 India
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13
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Yadav P, Tandon H, Malik B, Chakraborty T. An alternative approach to compute atomic hardness. Theor Chem Acc 2021. [DOI: 10.1007/s00214-021-02768-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Janicka M, Mycka A, Sztanke M, Sztanke K. Predicting Pharmacokinetic Properties of Potential Anticancer Agents via Their Chromatographic Behavior on Different Reversed Phase Materials. Int J Mol Sci 2021; 22:ijms22084257. [PMID: 33923942 PMCID: PMC8072580 DOI: 10.3390/ijms22084257] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/16/2021] [Accepted: 04/17/2021] [Indexed: 11/17/2022] Open
Abstract
The Quantitative Structure-Activity Relationship (QSAR) methodology was used to predict biological properties, i.e., the blood–brain distribution (log BB), fraction unbounded in the brain (fu,brain), water-skin permeation (log Kp), binding to human plasma proteins (log Ka,HSA), and intestinal permeability (Caco-2), for three classes of fused azaisocytosine-containing congeners that were considered and tested as promising drug candidates. The compounds were characterized by lipophilic, structural, and electronic descriptors, i.e., chromatographic retention, topological polar surface area, polarizability, and molecular weight. Different reversed-phase liquid chromatography techniques were used to determine the chromatographic lipophilicity of the compounds that were tested, i.e., micellar liquid chromatography (MLC) with the ODS-2 column and polyoxyethylene lauryl ether (Brij 35) as the effluent component, an immobilized artificial membrane (IAM) chromatography with phosphatidylcholine column (IAM.PC.DD2) and chromatography with end-capped octadecylsilyl (ODS) column using aqueous solutions of acetonitrile as the mobile phases. Using multiple linear regression, we derived the statistically significant quantitative structure-activity relationships. All these QSAR equations were validated and were found to be very good. The investigations highlight the significance and possibilities of liquid chromatographic techniques with three different reversed-phase materials and QSARs methods in predicting the pharmacokinetic properties of our important organic compounds and reducing unethical animal testing.
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Affiliation(s)
- Małgorzata Janicka
- Department of Physical Chemistry, Faculty of Chemistry, Institute of Chemical Science, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland;
| | - Anna Mycka
- Doctoral School of Quantitative and Natural Sciences, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland;
| | - Małgorzata Sztanke
- Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland
- Correspondence: (M.S.); (K.S.); Tel.: +48-814486195 (M.S. & K.S.)
| | - Krzysztof Sztanke
- Laboratory of Bioorganic Synthesis and Analysis, Chair and Department of Medical Chemistry, Medical University of Lublin, 4A Chodźki Street, 20-093 Lublin, Poland
- Correspondence: (M.S.); (K.S.); Tel.: +48-814486195 (M.S. & K.S.)
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15
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Rozsa VF, Galli G. Molecular Polarizabilities in Aqueous Systems from First-Principles. J Phys Chem B 2021; 125:2183-2192. [DOI: 10.1021/acs.jpcb.0c10732] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Viktor F. Rozsa
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
| | - Giulia Galli
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
- Materials Science Division, Argonne National Laboratory, Chicago, Illinois 60439, United States
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16
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Leidens LM, Maia da Costa MEH, Figueroa NS, Barbieri RA, Alvarez F, Michels AF, Figueroa CA. On the physicochemical origin of nanoscale friction: the polarizability and electronegativity relationship tailoring nanotribology. Phys Chem Chem Phys 2021; 23:2873-2884. [PMID: 33475105 DOI: 10.1039/d0cp06436j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Friction is a ubiquitous manifestation of nature, and when it is studied at the nanoscale, complex and interesting effects arise from fundamental physical and chemical surface properties. Surprisingly, and probably due to the complexity of nanofriction studies, this aspect has not been completely discussed in prior studies. To fully consider the physicochemical influence in nanoscale friction, amorphous carbon films with different amounts of hydrogen and fluorine were prepared, chemically characterized, and evaluated via lateral force microscopy. Hydrogen and fluorine were selected because although they exhibit different physicochemical properties, both contribute to frictional force reduction. Indeed, to explain the experimental behavior, it is necessary to propose a new damping constant unifying both polarizability (physical) and electronegativity (chemical) properties. The satisfactory agreement between theory and experiments may encourage and enhance deeper discussion and new experiments that take into account the chemical peculiarities of frictional behavior relating to nanoscale elastic regimes.
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Affiliation(s)
- Leonardo M Leidens
- Programa de Pós-Graduação em Engenharia e Ciência dos Materiais (PPGMAT), University of Caxias do Sul (UCS), 95070-560, Caxias do Sul, RS, Brazil.
| | - Marcelo E H Maia da Costa
- Physics Department, Pontifical Catholic University of Rio de Janeiro (PUC-RIO), 22453-900, Rio de Janeiro, RJ, Brazil
| | - Neileth S Figueroa
- Physics Department, Pontifical Catholic University of Rio de Janeiro (PUC-RIO), 22453-900, Rio de Janeiro, RJ, Brazil
| | - Rodrigo A Barbieri
- Central Laboratory of Microscopy (LCMIC), University of Caxias do Sul (UCS), 95070-560, Caxias do Sul, RS, Brazil
| | - Fernando Alvarez
- Institute of Physics "Gleb Wataghin", Campinas State University (UNICAMP), 13083-970, Campinas, SP, Brazil
| | - Alexandre F Michels
- Programa de Pós-Graduação em Engenharia e Ciência dos Materiais (PPGMAT), University of Caxias do Sul (UCS), 95070-560, Caxias do Sul, RS, Brazil.
| | - Carlos A Figueroa
- Programa de Pós-Graduação em Engenharia e Ciência dos Materiais (PPGMAT), University of Caxias do Sul (UCS), 95070-560, Caxias do Sul, RS, Brazil. and Plasmar Tecnologia Ltda, 95030-775, Caxias do Sul, RS, Brazil
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