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Niederquell A, Vraníková B, Kuentz M. Study of Disordered Mesoporous Silica Regarding Intrinsic Compound Affinity to the Carrier and Drug-Accessible Surface Area. Mol Pharm 2023; 20:6301-6310. [PMID: 37948648 DOI: 10.1021/acs.molpharmaceut.3c00690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
There is increasing research interest in using mesoporous silica for the delivery of poorly water-soluble drugs that are stabilized in a noncrystalline form. Most research has been done on ordered silica, whereas far fewer studies have been published on using nonordered mesoporous silica, and little is known about intrinsic drug affinity to the silica surface. The present mechanistic study uses inverse gas chromatography (IGC) to analyze the surface energies of three different commercially available disordered mesoporous silica grades in the gas phase. Using the more drug-like probe molecule octane instead of nitrogen, the concept of a "drug-accessible surface area" is hereby introduced, and the effect on drug monolayer capacity is addressed. In addition, enthalpic interactions of molecules with the silica surface were calculated based on molecular mechanics, and entropic energy contributions of volatiles were estimated considering molecular flexibility. These free energy contributions were used in a regression model, giving a successful comparison with experimental desorption energies from IGC. It is proposed that a simplified model for drugs based only on the enthalpic interactions can provide an affinity ranking to the silica surface. Following this preformulation research on mesoporous silica, future studies may harness the presented concepts to guide formulation scientists.
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Affiliation(s)
- Andreas Niederquell
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
- School of Life Sciences FHNW, Institute for Pharma Technology, University of Applied Sciences and Arts Northwestern Switzerland, Hofackerstr. 30, 4132 Muttenz, Switzerland
| | - Barbora Vraníková
- Department of Pharmaceutical Technology, Faculty of Pharmacy in Hradec Králové, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Martin Kuentz
- School of Life Sciences FHNW, Institute for Pharma Technology, University of Applied Sciences and Arts Northwestern Switzerland, Hofackerstr. 30, 4132 Muttenz, Switzerland
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2
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Sechi B, Dessì A, Dallocchio R, Tsetskhladze N, Chankvetadze B, Pérez-Baeza M, Cossu S, Jibuti G, Mamane V, Peluso P. Unravelling dispersion forces in liquid-phase enantioseparation. Part I: Impact of ferrocenyl versus phenyl groups. Anal Chim Acta 2023; 1278:341725. [PMID: 37709466 DOI: 10.1016/j.aca.2023.341725] [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: 06/08/2023] [Revised: 08/12/2023] [Accepted: 08/14/2023] [Indexed: 09/16/2023]
Abstract
BACKGROUND Highly ordered chiral secondary structures as well as multiple (tunable) recognition sites are the keys to success of polysaccharide carbamate-based chiral selectors in enantioseparation science. Hydrogen bonds (HBs), dipole-dipole, and π-π interactions are classically considered the most frequent noncovalent interactions underlying enantioselective recognition with these chiral selectors. Very recently, halogen, chalcogen and π-hole bonds were also identified as interactions working in polysaccharide carbamate-based selectors to promote enantiomer distinction. On the contrary, the function of dispersion interactions in this field was not explored so far. RESULTS The enantioseparation of chiral ferrocenes featuring chiral axis or chiral plane as stereogenic elements was performed by comparing five polysaccharide carbamate-based chiral columns, with the aim to identify enantioseparation outcomes that could be reasonably determined by dispersion forces, making available a reliable experimental data set for future theoretical studies to confirm the heuristic hypothesis. The effects of mobile phase polarity and temperature on the enantioseparation were considered, and potential recognition sites on analytes and selectors were evaluated by electrostatic potential (V) analysis and molecular dynamics (MD). In this first part, the enantioseparation of 3,3'-dibromo-5,5'-bis-ferrocenylethynyl-4,4'-bipyridine bearing two ferrocenylethynyl units linked to an axially chiral core was performed and compared to that of the analyte featuring the same structural motif with two phenyl groups in place of the ferrocenyl moieties. The results of this study showed the superiority of the ferrocenyl compared to the phenyl group, as a structural element favouring enantiodifferentiation. SIGNIFICANCE AND NOVELTY Even if dispersion (London) forces have been envisaged acting in liquid-phase enantioseparations, focused studies to explore possible contributions of dispersion forces with polysaccharide carbamate-based selectors are practically missing. This study allowed us to collect experimental information that support the involvement of dispersion forces as contributors to liquid-phase enantioseparation, paving the way to a new picture in this field.
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Affiliation(s)
- Barbara Sechi
- Istituto di Chimica Biomolecolare ICB-CNR, Sede Secondaria di Sassari, Traversa La Crucca 3, Regione Baldinca, Li Punti, 07100, Sassari, Italy
| | - Alessandro Dessì
- Istituto di Chimica Biomolecolare ICB-CNR, Sede Secondaria di Sassari, Traversa La Crucca 3, Regione Baldinca, Li Punti, 07100, Sassari, Italy
| | - Roberto Dallocchio
- Istituto di Chimica Biomolecolare ICB-CNR, Sede Secondaria di Sassari, Traversa La Crucca 3, Regione Baldinca, Li Punti, 07100, Sassari, Italy
| | - Nutsa Tsetskhladze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Chavchavadze Ave 3, 0179, Tbilisi, Georgia
| | - Bezhan Chankvetadze
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Chavchavadze Ave 3, 0179, Tbilisi, Georgia
| | - Mireia Pérez-Baeza
- Departamento de Química Analítica, Universitat de València, Burjassot, València, Spain
| | - Sergio Cossu
- Dipartimento di Scienze Molecolari e Nanosistemi DSMN, Università Ca' Foscari Venezia, Via Torino 155, I-30172, Mestre Venezia, Italy
| | - Giorgi Jibuti
- Institute of Physical and Analytical Chemistry, School of Exact and Natural Sciences, Tbilisi State University, Chavchavadze Ave 3, 0179, Tbilisi, Georgia
| | - Victor Mamane
- Institut de Chimie de Strasbourg, UMR, CNRS 7177, Equipe LASYROC, 1 Rue Blaise Pascal, 67008, Strasbourg Cedex, France.
| | - Paola Peluso
- Istituto di Chimica Biomolecolare ICB-CNR, Sede Secondaria di Sassari, Traversa La Crucca 3, Regione Baldinca, Li Punti, 07100, Sassari, Italy.
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3
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Kadhim MM, Taban TZ, Abdullaha SA, Alnasoud N, Hachim SK, Alomar S. Application of zinc oxide nano-tube as drug-delivery vehicles of anticancer drug. J Mol Model 2023; 29:47. [PMID: 36656400 DOI: 10.1007/s00894-022-05426-y] [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: 08/16/2022] [Accepted: 12/16/2022] [Indexed: 01/20/2023]
Abstract
CONTEXT Zinc oxide nano-tube (ZnONT) nano-structures, which possess chemical stability and non-toxicity in the human body, are considered promising for delivering different drugs. Within this work, we scrutinized the drug delivery capability of the ZnONT and its adsorptional properties as a drug delivery vehicle (DDV) for hydroxyurea (HU) as an anti-cancer drug through density functional theory along with the solvent impacts. Based on the optimized structures, it can be suggested that Zn atoms of ZnONT are the ideal sites on this nano-tube for the adsorption of HU. HU had a strong physical adsorption through the O atom of carbonyl groups onto the local pyramidal site of the ZnONT. At 1.96 Å and Ead of -39.28 kcal/mol, in the configuration which was favorable in terms of energy, there was an interaction between the O atoms of -C=O group of the drug and a Zn atom of the ZnONT. In order to scrutinize the excited state properties of the HU-ZnONT complex, we also examined the UV/Vis data of the HU/ZnONT interaction system. Following the adsorption of HU onto the surface of the ZnONT, there was a significant red-shift based on the maximum absorption wavelength, showing that the ZnONT is an ideal candidate for optic sensors in order to detect and monitor the drug molecule. HU could be released in the cancer tissues where pH was low based on the drug release mechanism. The current work thoroughly investigated the mechanism of interaction between the ZnONT and HU, showing that ZnONT can be used for the smart drug delivery of HU. Overall, the findings suggest that ZnONT could be used as an efficient drug-delivery system for the HU drug to treat various types of cancer. METHODS In this work we used B3LYP-gCP-D3 functional and the basis set LANL2DZ on the transition metal (Zn) and the basis set cc-pVDZ on the others. GAMESS software program was employed for performing the calculations. we performed analyses, including charge transport, molecular electrostatic potential surface (MEP), energetic, electronic, natural bond orbitals (NBOs), and structural optimizations.
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Affiliation(s)
- Mustafa M Kadhim
- Medical Laboratory Techniques Department, Al-Farahidi University, Baghdad, 10022, Iraq.
| | - Taleeb Zedan Taban
- Laser and Optoelectronics Engineering Department, Kut University College, Kut, Wasit, 52001, Iraq
| | | | | | - Safa K Hachim
- College of Technical Engineering, The Islamic University, Najaf, Iraq.,Medical Laboratory Techniques Department, Al-Turath University College, Baghdad, Iraq
| | - S Alomar
- Independent Researcher, Baghdad, Iraq
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Baiano C, Lupi J, Barone V, Tasinato N. Gliding on Ice in Search of Accurate and Cost-Effective Computational Methods for Astrochemistry on Grains: The Puzzling Case of the HCN Isomerization. J Chem Theory Comput 2022; 18:3111-3121. [PMID: 35446575 PMCID: PMC9097295 DOI: 10.1021/acs.jctc.1c01252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Indexed: 11/28/2022]
Abstract
The isomerization of hydrogen cyanide to hydrogen isocyanide on icy grain surfaces is investigated by an accurate composite method (jun-Cheap) rooted in the coupled cluster ansatz and by density functional approaches. After benchmarking density functional predictions of both geometries and reaction energies against jun-Cheap results for the relatively small model system HCN···(H2O)2, the best performing DFT methods are selected. A large cluster containing 20 water molecules is then employed within a QM/QM' approach to include a realistic environment mimicking the surface of icy grains. Our results indicate that four water molecules are directly involved in a proton relay mechanism, which strongly reduces the activation energy with respect to the direct hydrogen transfer occurring in the isolated molecule. Further extension of the size of the cluster up to 192 water molecules in the framework of a three-layer QM/QM'/MM model has a negligible effect on the energy barrier ruling the isomerization. Computation of reaction rates by the transition state theory indicates that on icy surfaces, the isomerization of HNC to HCN could occur quite easily even at low temperatures thanks to the reduced activation energy that can be effectively overcome by tunneling.
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Affiliation(s)
- Carmen Baiano
- Scuola Normale Superiore, Piazza Dei Cavalieri 7, I-56126 Pisa, Italy
| | - Jacopo Lupi
- Scuola Normale Superiore, Piazza Dei Cavalieri 7, I-56126 Pisa, Italy
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza Dei Cavalieri 7, I-56126 Pisa, Italy
| | - Nicola Tasinato
- Scuola Normale Superiore, Piazza Dei Cavalieri 7, I-56126 Pisa, Italy
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Narayan R, Gadag S, Garg S, Nayak UY. Understanding the Effect of Functionalization on Loading Capacity and Release of Drug from Mesoporous Silica Nanoparticles: A Computationally Driven Study. ACS OMEGA 2022; 7:8229-8245. [PMID: 35309455 PMCID: PMC8928562 DOI: 10.1021/acsomega.1c03618] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
MCM-41, a type of mesoporous silica nanoparticle, has garnered widespread interests as a useful carrier for drug delivery wherein the drug gets adsorbed into the pores of the carrier. To understand the adsorption mechanism and release of the drug at the molecular level, in the current study, it was attempted to generate a computational model for the loading of 5-fluorouracil (5-FU), a chemotherapeutic agent into surface-modified MCM-41. The molecular surface models of the mesoporous silica (MCM-41) nanoparticle with different surface substitutions were created. In the first stage, molecular mechanics (MM) simulations were carried out to obtain the optimized surface structures. Subsequently, a 5-FU drug molecule in its different forms was docked on top of different MCM-41 surfaces to understand the adsorption orientation and energetics. To further validate the results, more accurate quantum mechanical (QM) calculations were also carried out, and the energetics between the QM and MM calculations are found to be similar. All the substitutions (-NH2, -CN, -COOH) except the methyl substitution exhibited favorable interactions compared to the unsubstituted MCM-41 surface which was in accordance with the experimental observations. The release rate of 5-FU from MCM-41 and aminopropyl-substituted MCM-41 (MCM-NH2) was studied using molecular dynamics simulations which revealed that the release rate of 5-FU from the MCM-NH2 surface was slower compared to that of plain MCM-41. The detailed surface characteristics and the adsorption energies from the molecular simulations correlating the loading capacity and release are reported in here.
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Affiliation(s)
- Reema Narayan
- Department
of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104 Karnataka, India
| | - Shivaprasad Gadag
- Department
of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104 Karnataka, India
| | - Sanjay Garg
- UniSA:
Clinical and Health Sciences, University
of South Australia, Adelaide, South Australia 5000, Australia
| | - Usha Y. Nayak
- Department
of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104 Karnataka, India
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Can Mesoporous Silica Speed Up Degradation of Benzodiazepines? Hints from Quantum Mechanical Investigations. MATERIALS 2022; 15:ma15041357. [PMID: 35207897 PMCID: PMC8875265 DOI: 10.3390/ma15041357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/04/2022] [Accepted: 02/10/2022] [Indexed: 11/17/2022]
Abstract
This work reports for the first time a quantum mechanical study of the interactions of a model benzodiazepine drug, i.e., nitrazepam, with various models of amorphous silica surfaces, differing in structural and interface properties. The interest in these systems is related to the use of mesoporous silica as carrier in drug delivery. The adopted computational procedure has been chosen to investigate whether silica–drug interactions favor the drug degradation mechanism or not, hindering the beneficial pharmaceutical effect. Computed structural, energetics, and vibrational properties represent a relevant comparison for future experiments. Our simulations demonstrate that adsorption of nitrazepam on amorphous silica is a strongly exothermic process in which a partial proton transfer from the surface to the drug is observed, highlighting a possible catalytic role of silica in the degradation reaction of benzodiazepines.
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7
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Jafari G, Raissi H, Hashemzadeh H. Molecular insight into the interaction of fluorometholone and cholesterol molecules with β-cyclodextrin and sulfobutylether-β-cyclodextrin. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2021.113554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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8
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Adsorption Features of Various Inorganic Materials for the Drug Removal from Water and Synthetic Urine Medium: A Multi-Technique Time-Resolved In Situ Investigation. MATERIALS 2021; 14:ma14206196. [PMID: 34683794 PMCID: PMC8540798 DOI: 10.3390/ma14206196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/11/2021] [Accepted: 10/14/2021] [Indexed: 01/17/2023]
Abstract
Pharmaceutical active compounds, including hundreds of different substances, are counted among the emerging contaminants in waterbodies, whose presence raises a growing concern for the ecosystem. Drugs are metabolized and excreted mainly through urine as an unchanged active ingredient or in the form of metabolites. These emerging contaminants are not effectively removed with the technologies currently in use, making them a relevant environmental problem. This study proposes the treatment of urine and water at the source that can allow an easier removal of dissolved drugs and metabolites. The treatment of synthetic urine, with dissolved ibuprofen as a model compound, by adsorption, using various classes of inorganic materials, such as clays, hierarchical zeolites and ordered mesoporous silica (MCM-41), is presented. A multi-technique approach involving X-ray powder diffraction, solid-state NMR, UV-Vis and Raman spectroscopies was employed to investigate the adsorption process in inorganic adsorbents. Moreover, the uptake, the ensuing competition, the efficiency and selectivity as well as the packing of the model compound in ordered mesoporous silica during the incipient wetness impregnation process were all thoroughly monitored by a novel approach, involving combined complementary time-resolved in situ 1H and 13C MAS NMR spectroscopy as well as X-ray powder diffraction.
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9
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Yamada SA, Hung ST, Shin JY, Fayer MD. Complex Formation and Dissociation Dynamics on Amorphous Silica Surfaces. J Phys Chem B 2021; 125:4566-4581. [DOI: 10.1021/acs.jpcb.1c01225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Steven A. Yamada
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Samantha T. Hung
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Jae Yoon Shin
- Department of Advanced Materials Chemistry, Korea University, Sejong, Korea
| | - Michael D. Fayer
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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10
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Donà L, Brandenburg JG, Bush IJ, Civalleri B. Cost-effective composite methods for large-scale solid-state calculations. Faraday Discuss 2020; 224:292-308. [PMID: 32955053 DOI: 10.1039/d0fd00066c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Following the development in recent years of progressively more accurate approximations to the exchange-correlation functional, the use of density functional theory (DFT) methods to examine increasingly large and complex systems has grown, in particular for solids and other condensed matter systems. However the cost of these calculations is high, often requiring the use of specialist HPC facilities. As such, for the purpose of large-scale high-throughput screening of material properties, a hierarchy of simplified DFT methods has been proposed that allows rapid electronic structure calculation of large systems, and we have recently extended this scheme to the solid state (sol-3c). Here, we analyze the applicability and scaling of the new sol-3c DFT methods to molecules and crystals composed of light-elements, such as small proteins and model DNA-helices. Furthermore, the calculation of the electronic structure of large to very large porous systems, such as metal-organic frameworks and inorganic nanoparticles, is discussed. The new composite methods have been implemented in the CRYSTAL17 code, which efficiently implements hybrid functionals and enables routine application of the new methods to large-scale calculations of such materials with excellent performance, even with small-scale computing resources.
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Affiliation(s)
- L Donà
- Dipartimento di Chimica, Università di Torino, NIS (Nanostructured Interfaces and Surfaces) Centre, Via P. Giuria 5, 10125 Torino, Italy.
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11
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Adsorption properties study of boron nitride fullerene for the application as smart drug delivery agent of anti-cancer drug hydroxyurea by density functional theory. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114315] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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12
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Zyuzin MV, Zhu D, Parak WJ, Feliu N, Escudero A. Development of Silica-Based Biodegradable Submicrometric Carriers and Investigating Their Characteristics as in Vitro Delivery Vehicles. Int J Mol Sci 2020; 21:E7563. [PMID: 33066289 PMCID: PMC7590072 DOI: 10.3390/ijms21207563] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/24/2020] [Accepted: 10/03/2020] [Indexed: 12/11/2022] Open
Abstract
Nanostructured silica (SiO2)-based materials are attractive carriers for the delivery of bioactive compounds into cells. In this study, we developed hollow submicrometric particles composed of SiO2 capsules that were separately loaded with various bioactive molecules such as dextran, proteins, and nucleic acids. The structural characterization of the reported carriers was conducted using transmission and scanning electron microscopies (TEM/SEM), confocal laser scanning microscopy (CLSM), and dynamic light scattering (DLS). Moreover, the interaction of the developed carriers with cell lines was studied using standard viability, proliferation, and uptake assays. The submicrometric SiO2-based capsules loaded with DNA plasmid encoding green fluorescence proteins (GFP) were used to transfect cell lines. The obtained results were compared with studies made with similar capsules composed of polymers and show that SiO2-based capsules provide better transfection rates on the costs of higher toxicity.
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Affiliation(s)
- Mikhail V. Zyuzin
- Department of Physics and Engineering, ITMO University, Lomonosova 9, St. Petersburg 191002, Russia;
| | - Dingcheng Zhu
- Center for Hybrid Nanostructures (CHyN), Universität Hamburg, 22607 Hamburg, Germany; (D.Z.); (W.J.P.)
| | - Wolfgang J. Parak
- Center for Hybrid Nanostructures (CHyN), Universität Hamburg, 22607 Hamburg, Germany; (D.Z.); (W.J.P.)
| | - Neus Feliu
- Center for Hybrid Nanostructures (CHyN), Universität Hamburg, 22607 Hamburg, Germany; (D.Z.); (W.J.P.)
- Fraunhofer Center for Applied Nanotechnology (CAN), 20146 Hamburg, Germany
| | - Alberto Escudero
- Departamento de Química Inorgánica. Facultad de Química, Universidad de Sevilla, Calle Profesor García González 1, E–41012 Seville, Spain
- Instituto de Investigaciones Químicas (IIQ), Universidad de Sevilla–CSIC, Calle Américo Vespucio 49, E–41092 Seville, Spain
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Mazurek AH, Szeleszczuk Ł, Pisklak DM. Periodic DFT Calculations-Review of Applications in the Pharmaceutical Sciences. Pharmaceutics 2020; 12:E415. [PMID: 32369915 PMCID: PMC7284980 DOI: 10.3390/pharmaceutics12050415] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/28/2020] [Accepted: 04/29/2020] [Indexed: 12/31/2022] Open
Abstract
In the introduction to this review the complex chemistry of solid-state pharmaceutical compounds is summarized. It is also explained why the density functional theory (DFT) periodic calculations became recently so popular in studying the solid APIs (active pharmaceutical ingredients). Further, the most popular programs enabling DFT periodic calculations are presented and compared. Subsequently, on the large number of examples, the applications of such calculations in pharmaceutical sciences are discussed. The mentioned topics include, among others, validation of the experimentally obtained crystal structures and crystal structure prediction, insight into crystallization and solvation processes, development of new polymorph synthesis ways, and formulation techniques as well as application of the periodic DFT calculations in the drug analysis.
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Affiliation(s)
| | - Łukasz Szeleszczuk
- Chair and Department of Physical Pharmacy and Bioanalysis, Department of Physical Chemistry, Faculty of Pharmacy, Medical University of Warsaw, Banacha 1 str., 02-093 Warsaw, Poland; (A.H.M.); (D.M.P.)
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14
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Vieira Pinto SM, Tasinato N, Barone V, Amadei A, Zanetti-Polzi L, Daidone I. Modeling amino-acid side chain infrared spectra: the case of carboxylic residues. Phys Chem Chem Phys 2020; 22:3008-3016. [DOI: 10.1039/c9cp04774c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Infrared (IR) spectroscopy is commonly utilized for the investigation of protein structures and protein-mediated processes.
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Affiliation(s)
- Sandra Mónica Vieira Pinto
- Scuola Normale Superiore
- I-56126 Pisa
- Italy
- Department of Physical and Chemical Sciences
- University of L'Aquila
| | | | | | - Andrea Amadei
- Department of Chemical and Technological Sciences
- University of Rome “Tor Vergata
- I-00185 Rome
- Italy
| | - Laura Zanetti-Polzi
- Department of Physical and Chemical Sciences
- University of L'Aquila
- I-67010 L'Aquila
- Italy
- CNR Institute of Nanoscience
| | - Isabella Daidone
- Department of Physical and Chemical Sciences
- University of L'Aquila
- I-67010 L'Aquila
- Italy
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15
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Luo S, Hao J, Gao Y, Liu D, Cai Q, Yang X. Pore size effect on adsorption and release of metoprolol tartrate in mesoporous silica: Experimental and molecular simulation studies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 100:789-797. [DOI: 10.1016/j.msec.2019.03.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 02/07/2019] [Accepted: 03/15/2019] [Indexed: 12/18/2022]
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16
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Müller RH, Hespeler D, Jin N, Pyo SM. smartPearls – Novel physically stable amorphous delivery system for poorly soluble dermal actives. Int J Pharm 2019; 555:314-321. [DOI: 10.1016/j.ijpharm.2018.11.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 11/05/2018] [Accepted: 11/07/2018] [Indexed: 10/27/2022]
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17
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Signorile M, Salvini C, Zamirri L, Bonino F, Martra G, Sodupe M, Ugliengo P. Formamide Adsorption at the Amorphous Silica Surface: A Combined Experimental and Computational Approach. Life (Basel) 2018; 8:life8040042. [PMID: 30249032 PMCID: PMC6316577 DOI: 10.3390/life8040042] [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: 09/10/2018] [Revised: 09/19/2018] [Accepted: 09/20/2018] [Indexed: 11/16/2022] Open
Abstract
Mineral surfaces have been demonstrated to play a central role in prebiotic reactions, which are understood to be at the basis of the origin of life. Among the various molecules proposed as precursors for these reactions, one of the most interesting is formamide. Formamide has been shown to be a pluripotent molecule, generating a wide distribution of relevant prebiotic products. In particular, the outcomes of its reactivity are strongly related to the presence of mineral phases acting as catalysts toward specific reaction pathways. While the mineral–products relationship has been deeply studied for a large pool of materials, the fundamental description of formamide reactivity over mineral surfaces at a microscopic level is missing in the literature. In particular, a key step of formamide chemistry at surfaces is adsorption on available interaction sites. This report aims to investigate the adsorption of formamide over a well-defined amorphous silica, chosen as a model mineral surface. An experimental IR investigation of formamide adsorption was carried out and its outcomes were interpreted on the basis of first principles simulation of the process, adopting a realistic model of amorphous silica.
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Affiliation(s)
- Matteo Signorile
- Dipartimento di Chimica and NIS, Università di Torino, Via P. Giuria 7 - 10125 Torino and Via G. Quarello 15/A - 10135 Torino, Italy.
| | - Clara Salvini
- Dipartimento di Chimica and NIS, Università di Torino, Via P. Giuria 7 - 10125 Torino and Via G. Quarello 15/A - 10135 Torino, Italy.
| | - Lorenzo Zamirri
- Dipartimento di Chimica and NIS, Università di Torino, Via P. Giuria 7 - 10125 Torino and Via G. Quarello 15/A - 10135 Torino, Italy.
| | - Francesca Bonino
- Dipartimento di Chimica and NIS, Università di Torino, Via P. Giuria 7 - 10125 Torino and Via G. Quarello 15/A - 10135 Torino, Italy.
| | - Gianmario Martra
- Dipartimento di Chimica and NIS, Università di Torino, Via P. Giuria 7 - 10125 Torino and Via G. Quarello 15/A - 10135 Torino, Italy.
| | - Mariona Sodupe
- Departament de Química, Universitat Autònoma de Barcelona, 08193 Bellaterra, Catalogna, Spain.
| | - Piero Ugliengo
- Dipartimento di Chimica and NIS, Università di Torino, Via P. Giuria 7 - 10125 Torino and Via G. Quarello 15/A - 10135 Torino, Italy.
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Abbasi A, Sardroodi JJ. An Innovative Method for the Removal of Toxic SOx Molecules from Environment by TiO2/Stanene Nanocomposites: A First-Principles Study. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0832-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Gurikov P, Smirnova I. Amorphization of drugs by adsorptive precipitation from supercritical solutions: A review. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2017.03.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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Šulce A, Backenköhler J, Schrader I, Piane MD, Müller C, Wark A, Ciacchi LC, Azov V, Kunz S. Ligand-functionalized Pt nanoparticles as asymmetric heterogeneous catalysts: molecular reaction control by ligand–reactant interactions. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01836g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stereoselective control on amino acid functionalized supported Pt nanoparticles by means of dispersion interactions.
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Affiliation(s)
- Anda Šulce
- Institute of Applied and Physical Chemistry (IAPC)
- Center for Environmental Research and Sustainable Technology
- University of Bremen
- 28359 Bremen
- Germany
| | - Jana Backenköhler
- Institute for Organic and Analytical Chemistry
- University of Bremen
- 28359 Bremen
- Germany
| | - Imke Schrader
- Institute of Applied and Physical Chemistry (IAPC)
- Center for Environmental Research and Sustainable Technology
- University of Bremen
- 28359 Bremen
- Germany
| | - Massimo Delle Piane
- Hybrid Materials Interfaces Group
- Faculty of Production Engineering
- Bremen Center for Computational Materials Science (BCCMS)
- University of Bremen
- 28359 Bremen
| | - Christian Müller
- Hybrid Materials Interfaces Group
- Faculty of Production Engineering
- Bremen Center for Computational Materials Science (BCCMS)
- University of Bremen
- 28359 Bremen
| | - André Wark
- Hybrid Materials Interfaces Group
- Faculty of Production Engineering
- Bremen Center for Computational Materials Science (BCCMS)
- University of Bremen
- 28359 Bremen
| | - Lucio Colombi Ciacchi
- Hybrid Materials Interfaces Group
- Faculty of Production Engineering
- Bremen Center for Computational Materials Science (BCCMS)
- University of Bremen
- 28359 Bremen
| | - Vladimir Azov
- Department of Chemistry
- University of the Free State
- Bloemfontein 9300
- South Africa
| | - Sebastian Kunz
- Institute of Applied and Physical Chemistry (IAPC)
- Center for Environmental Research and Sustainable Technology
- University of Bremen
- 28359 Bremen
- Germany
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21
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Abbasi A, Sardroodi JJ. Density functional theory (DFT) study of O3 molecules adsorbed on nitrogen-doped TiO2/MoS2 nanocomposites: applications to gas sensor devices. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1196-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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A novel strategy for SO x removal by N-doped TiO 2 /WSe 2 nanocomposite as a highly efficient molecule sensor investigated by van der Waals corrected DFT. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.05.020] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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23
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Spada L, Tasinato N, Bosi G, Vazart F, Barone V, Puzzarini C. On the competition between weak O-H···F and C-H···F hydrogen bonds, in cooperation with C-H···O contacts, in the difluoromethane - tert-butyl alcohol cluster. JOURNAL OF MOLECULAR SPECTROSCOPY 2017; 337:90-95. [PMID: 28919646 PMCID: PMC5597040 DOI: 10.1016/j.jms.2017.04.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The 1:1 complex of tert-butyl alcohol with difluoromethane has been characterized by means of a joint experimental-computational investigation. Its rotational spectrum has been recorded by using a pulsed-jet Fourier-Transform microwave spectrometer. The experimental work has been guided and supported by accurate quantum-chemical calculations. In particular, the computed potential energy landscape pointed out the formation of three stable isomers. However, the very low interconversion barriers explain why only one isomer, showing one O-H···F and two C-H···O weak hydrogen bonds, has been experimentally characterized. The effect of the H → tert-butyl- group substitution has been analyzed from the comparison to the difluoromethane-water adduct.
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Affiliation(s)
- Lorenzo Spada
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa (Italy)
| | - Nicola Tasinato
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa (Italy)
| | - Giulio Bosi
- Dipartimento di Chimica ″G. Ciamician″ dell'Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy
| | - Fanny Vazart
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa (Italy)
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126 Pisa (Italy)
| | - Cristina Puzzarini
- Dipartimento di Chimica ″G. Ciamician″ dell'Università di Bologna, Via Selmi 2, I-40126 Bologna, Italy
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24
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Spada L, Tasinato N, Vazart F, Barone V, Caminati W, Puzzarini C. Noncovalent Interactions and Internal Dynamics in Pyridine-Ammonia: A Combined Quantum-Chemical and Microwave Spectroscopy Study. Chemistry 2017; 23:4876-4883. [DOI: 10.1002/chem.201606014] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Lorenzo Spada
- Scuola Normale Superiore; Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Nicola Tasinato
- Scuola Normale Superiore; Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Fanny Vazart
- Scuola Normale Superiore; Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Vincenzo Barone
- Scuola Normale Superiore; Piazza dei Cavalieri 7 56126 Pisa Italy
| | - Walther Caminati
- Dipartimento di Chimica; “Giacomo Ciamician” dell'Università; Via Selmi 2 40126 Bologna Italy
| | - Cristina Puzzarini
- Dipartimento di Chimica; “Giacomo Ciamician” dell'Università; Via Selmi 2 40126 Bologna Italy
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Phipps MJS, Fox T, Tautermann CS, Skylaris CK. Intuitive Density Functional Theory-Based Energy Decomposition Analysis for Protein–Ligand Interactions. J Chem Theory Comput 2017; 13:1837-1850. [DOI: 10.1021/acs.jctc.6b01230] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. J. S. Phipps
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - T. Fox
- Department of Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co. KG, 88397 Biberach, Germany
| | - C. S. Tautermann
- Department of Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co. KG, 88397 Biberach, Germany
| | - C.-K. Skylaris
- School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
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26
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Corno M, Delle Piane M, Choquet P, Ugliengo P. Models for biomedical interfaces: a computational study of quinone-functionalized amorphous silica surface features. Phys Chem Chem Phys 2017; 19:7793-7806. [DOI: 10.1039/c6cp07909a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structural and IR features of amorphous silica surfaces, functionalized by ortho-benzoquinone groups, were computed to obtain a deeper knowledge of multifunctional coatings with antimicrobial properties.
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Affiliation(s)
- Marta Corno
- Dipartimento di Chimica and NIS – Nanostructured Interfaces and Surfaces – Centre
- Università degli Studi di Torino
- Torino
- Italy
| | - Massimo Delle Piane
- Faculty of Production Engineering and Bremen Center for Computational Materials Science
- University of Bremen
- Bremen
- Germany
| | - Patrick Choquet
- Luxembourg Institute of Science and Technology (LIST)
- Materials Research and Technology Department (MRT)
- L-4362 Esch/Alzette
- Luxembourg
| | - Piero Ugliengo
- Dipartimento di Chimica and NIS – Nanostructured Interfaces and Surfaces – Centre
- Università degli Studi di Torino
- Torino
- Italy
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27
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Simonetti S, Compañy AD, Brizuela G, Juan A. β-Cristobalite (001) surface as 4-formaminoantipyrine adsorbent: First principle study of the effect on adsorption of surface modification. Colloids Surf B Biointerfaces 2016; 148:287-292. [PMID: 27619181 DOI: 10.1016/j.colsurfb.2016.09.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 08/07/2016] [Accepted: 09/04/2016] [Indexed: 10/21/2022]
Abstract
Silica based materials find applications as excipients and particularly as drug delivery agents for pharmaceutical drugs. Their performance can be crucially affected by surface treatments, as it can modify the adsorption (and release) of these formulations. The role of surface modification on the features of 4-formaminoantipyrine (FAA) adsorbed on β-cristobalite (001) surface is studied by means of simulations based on the Density Functional Theory (DFT). Starting from the results of FAA in interaction with a dehydroxylated surface; a fully hydroxylated surface and a functionalized surface with benzalkonium chloride (BC) surfactant have been added to study the configurational landscape. Calculations suggest that the trend for FAA preferential adsorption on silica surfaces is: dehydroxylated>hydroxylated>BC-functionalized. The potential for hydrogen bonding causes the main contribution to the bonding while dispersion forces present an additional contribution independently of whether the drug is hydrogen-bonded or BC-bonded to the surface. Adsorption takes mainly place through nitrogen atoms in the heterocyclic ring, the carbonyl and amine functional groups. Associated mode's shifts and concurrent changes in bond length are also observed showing accordance between electronic and geometrical structure results. BC surfactant reduces the number of formed H-bonds and lowers the attractive molecule-surface interaction being it useful to prevent particle agglomeration and could favor drug release in therapies that requires faster but controlled delivery.
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Affiliation(s)
- S Simonetti
- IFISUR, Universidad Nacional del Sur, CONICET, Departamento de Física-UNS, Bahía Blanca, Argentina; Universidad Tecnológica Nacional (UTN), Bahía Blanca, Argentina.
| | - A Díaz Compañy
- Comisión de Investigaciones Científicas (CIC), Buenos Aires, Argentina
| | - G Brizuela
- IFISUR, Universidad Nacional del Sur, CONICET, Departamento de Física-UNS, Bahía Blanca, Argentina
| | - A Juan
- IFISUR, Universidad Nacional del Sur, CONICET, Departamento de Física-UNS, Bahía Blanca, Argentina
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28
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Abbasi A, Jahanbin Sardroodi J. Prediction of a highly sensitive molecule sensor for SOx detection based on TiO2/MoS2 nanocomposites: a DFT study. J Sulphur Chem 2016. [DOI: 10.1080/17415993.2016.1229782] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Amirali Abbasi
- Molecular Simulation Laboratory (MSL), Azarbaijan Shahid Madani University, Tabriz, Iran
- Computational Nanomaterials Research Group (CNRG), Azarbaijan Shahid Madani University, Tabriz, Iran
- Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran
| | - Jaber Jahanbin Sardroodi
- Molecular Simulation Laboratory (MSL), Azarbaijan Shahid Madani University, Tabriz, Iran
- Computational Nanomaterials Research Group (CNRG), Azarbaijan Shahid Madani University, Tabriz, Iran
- Department of Chemistry, Faculty of Basic Sciences, Azarbaijan Shahid Madani University, Tabriz, Iran
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29
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Halo M, Ferrari AM, Berlier G, Miletto I, Casassa S. Experimental and first-principles IR characterization of quercetin adsorbed on a silica surface. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1854-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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30
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Propionic acid derivatives confined in mesoporous silica: monomers or dimers? The case of ibuprofen investigated by static and dynamic ab initio simulations. Theor Chem Acc 2016. [DOI: 10.1007/s00214-016-1817-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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31
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Heinz H, Ramezani-Dakhel H. Simulations of inorganic-bioorganic interfaces to discover new materials: insights, comparisons to experiment, challenges, and opportunities. Chem Soc Rev 2016; 45:412-48. [PMID: 26750724 DOI: 10.1039/c5cs00890e] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Natural and man-made materials often rely on functional interfaces between inorganic and organic compounds. Examples include skeletal tissues and biominerals, drug delivery systems, catalysts, sensors, separation media, energy conversion devices, and polymer nanocomposites. Current laboratory techniques are limited to monitor and manipulate assembly on the 1 to 100 nm scale, time-consuming, and costly. Computational methods have become increasingly reliable to understand materials assembly and performance. This review explores the merit of simulations in comparison to experiment at the 1 to 100 nm scale, including connections to smaller length scales of quantum mechanics and larger length scales of coarse-grain models. First, current simulation methods, advances in the understanding of chemical bonding, in the development of force fields, and in the development of chemically realistic models are described. Then, the recognition mechanisms of biomolecules on nanostructured metals, semimetals, oxides, phosphates, carbonates, sulfides, and other inorganic materials are explained, including extensive comparisons between modeling and laboratory measurements. Depending on the substrate, the role of soft epitaxial binding mechanisms, ion pairing, hydrogen bonds, hydrophobic interactions, and conformation effects is described. Applications of the knowledge from simulation to predict binding of ligands and drug molecules to the inorganic surfaces, crystal growth and shape development, catalyst performance, as well as electrical properties at interfaces are examined. The quality of estimates from molecular dynamics and Monte Carlo simulations is validated in comparison to measurements and design rules described where available. The review further describes applications of simulation methods to polymer composite materials, surface modification of nanofillers, and interfacial interactions in building materials. The complexity of functional multiphase materials creates opportunities to further develop accurate force fields, including reactive force fields, and chemically realistic surface models, to enable materials discovery at a million times lower computational cost compared to quantum mechanical methods. The impact of modeling and simulation could further be increased by the advancement of a uniform simulation platform for organic and inorganic compounds across the periodic table and new simulation methods to evaluate system performance in silico.
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Affiliation(s)
- Hendrik Heinz
- Department of Chemical and Biological Engineering, University of Colorado-Boulder, Boulder, CO 80309, USA.
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32
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Delle Piane M, Corno M, Orlando R, Dovesi R, Ugliengo P. Elucidating the fundamental forces in protein crystal formation: the case of crambin. Chem Sci 2015; 7:1496-1507. [PMID: 29899894 PMCID: PMC5963673 DOI: 10.1039/c5sc03447g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Accepted: 11/23/2015] [Indexed: 12/05/2022] Open
Abstract
This study demonstrates the feasibility of periodic all-electron hybrid density functional theory calculations in the description of protein crystals, using crambin as a test case.
Molecular simulations of proteins have been usually accomplished through empirical or semi-empirical potentials, due to the large size and inherent complexity of these biological systems. On the other hand, a theoretical description of proteins based on quantum-mechanical methods would however provide an unbiased characterization of their electronic properties, possibly offering a link between these and the ultimate biological activity. Yet, such approaches have been historically hindered by the large amount of requested computational power. Here we demonstrate the feasibility of periodic all-electron density functional theory calculations in the description of the crystal of the protein crambin (46 aminoacids), which is determined with exceptional structural accuracy. We have employed the hybrid B3LYP functional, coupled to an empirical description of London interactions (D*) to simulate the crambin crystal with an increasing amount of lattice water molecules in the cell (up to 172H2O per cell). The agreement with the experiment is good for both protein geometry and protein–water interactions. The energetics was computed to predict crystal formation energies, protein–water and protein–protein interaction energies. We studied the role of dispersion interactions which are crucial for holding the crambin crystal in place. B3LYP-D* electrostatic potential and dipole moment of crambin as well as the electronic charge flow from crambin to the solvating water molecules (0.0015e per H2O) have also been predicted. These results proved that quantum-mechanical simulations of small proteins, both free and in their crystalline state, are now feasible in a reasonable amount of time, by programs capable of exploiting high performance computing architectures, allowing the study of protein properties not easily amenable through classical force fields.
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Affiliation(s)
- Massimo Delle Piane
- Department of Chemistry and NIS Centre , University of Torino , via Pietro Giuria 7 , 10125 , Torino , Italy .
| | - Marta Corno
- Department of Chemistry and NIS Centre , University of Torino , via Pietro Giuria 7 , 10125 , Torino , Italy .
| | - Roberto Orlando
- Department of Chemistry and NIS Centre , University of Torino , via Pietro Giuria 7 , 10125 , Torino , Italy .
| | - Roberto Dovesi
- Department of Chemistry and NIS Centre , University of Torino , via Pietro Giuria 7 , 10125 , Torino , Italy .
| | - Piero Ugliengo
- Department of Chemistry and NIS Centre , University of Torino , via Pietro Giuria 7 , 10125 , Torino , Italy .
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33
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Erba A. On combining temperature and pressure effects on structural properties of crystals with standard ab initio techniques. J Chem Phys 2015; 141:124115. [PMID: 25273420 DOI: 10.1063/1.4896228] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
A general-purpose, fully automated, computationally efficient implementation is presented of a series of techniques for the simultaneous description of pressure and temperature effects on structural properties of materials, by means of standard ab initio simulations. Equilibrium volume, bulk modulus, thermal expansion coefficient, equation-of-state, Grüneisen parameter, constant-pressure and constant-volume specific heats are computed as a function of temperature and pressure for the simple crystal of diamond and compared with accurate experimental data. Convergence of computed properties with respect to super-cell size is critically discussed. The effect on such properties of the adopted exchange-correlation functional of the density-functional-theory is discussed by considering three different levels of approximation (including hybrids): it is found to be rather small for the temperature dependence of equilibrium volume and bulk modulus, whereas it is quite large as regards their absolute values.
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Affiliation(s)
- A Erba
- Dipartimento di Chimica and Centre of Excellence NIS (Nanostructured Interfaces and Surfaces), Università di Torino, via Giuria 5, IT-10125 Torino, Italy
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34
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Scott AM, Burns EA, Lafferty BJ, Hill FC. Theoretical predictions of thermodynamic parameters of adsorption of nitrogen containing environmental contaminants on kaolinite. J Mol Model 2015; 21:21. [DOI: 10.1007/s00894-015-2577-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Accepted: 01/07/2015] [Indexed: 10/24/2022]
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35
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Deb AKS, Ali SM, Shenoy KT. Unanticipated favoured adsorption affinity of Th(iv) ions towards bidentate carboxylate functionalized carbon nanotubes (CNT–COOH) over tridentate diglycolamic acid functionalized CNT: density functional theoretical investigation. RSC Adv 2015. [DOI: 10.1039/c5ra16651a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
CNT–COOH has higher adsorption affinity for Th4+ in aqueous solution compared to CNT–DGA, whereas pristine CNT has nil.
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Affiliation(s)
- A. K. Singha Deb
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Mumbai
- India – 40085
- Homi Bhabha National Institute
| | - Sk. M. Ali
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Mumbai
- India – 40085
- Homi Bhabha National Institute
| | - K. T. Shenoy
- Chemical Engineering Division
- Bhabha Atomic Research Centre
- Mumbai
- India – 40085
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36
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Mitran RA, Nastase S, Matei C, Berger D. Tailoring the dissolution rate enhancement of aminoglutethimide by functionalization of MCM-41 silica: a hydrogen bonding propensity approach. RSC Adv 2015. [DOI: 10.1039/c4ra11224e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chlorine ions can mediate the adsorption and enhance the dissolution release of aminoglutethimide from pristine and functionalized MCM-41 mesoporous silica.
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Affiliation(s)
- Raul-Augustin Mitran
- University “Politehnica” of Bucharest
- Faculty of Applied Chemistry and Material Science
- Bucharest
- Romania
- SARA Pharm Solutions
| | - Silviu Nastase
- University “Politehnica” of Bucharest
- Faculty of Applied Chemistry and Material Science
- Bucharest
- Romania
| | - Cristian Matei
- University “Politehnica” of Bucharest
- Faculty of Applied Chemistry and Material Science
- Bucharest
- Romania
| | - Daniela Berger
- University “Politehnica” of Bucharest
- Faculty of Applied Chemistry and Material Science
- Bucharest
- Romania
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37
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Delle Piane M, Vaccari S, Corno M, Ugliengo P. Silica-Based Materials as Drug Adsorbents: First Principle Investigation on the Role of Water Microsolvation on Ibuprofen Adsorption. J Phys Chem A 2014; 118:5801-7. [DOI: 10.1021/jp411173k] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Massimo Delle Piane
- Università di Torino, Dipartimento di Chimica and NIS (Nanostructured Interfaces
and Surfaces) Centre, Via Pietro Giuria 7, 10125 Torino, Italy
| | - Stefano Vaccari
- Università di Torino, Dipartimento di Chimica and NIS (Nanostructured Interfaces
and Surfaces) Centre, Via Pietro Giuria 7, 10125 Torino, Italy
| | - Marta Corno
- Università di Torino, Dipartimento di Chimica and NIS (Nanostructured Interfaces
and Surfaces) Centre, Via Pietro Giuria 7, 10125 Torino, Italy
| | - Piero Ugliengo
- Università di Torino, Dipartimento di Chimica and NIS (Nanostructured Interfaces
and Surfaces) Centre, Via Pietro Giuria 7, 10125 Torino, Italy
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38
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Gao K, Chen G, Wu D. A DFT study on the interaction between glycine molecules/radicals and the (8, 0) SiCNT. Phys Chem Chem Phys 2014; 16:17988-97. [DOI: 10.1039/c4cp01951b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The geometrical structures, energetics and electronic properties of glycine molecules as well as dehydrogenated radical interaction with silicon carbide nanotubes (SiCNTs) are investigated based on density functional theory (DFT) for the first time.
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Affiliation(s)
- Kefu Gao
- Department of Chemistry
- Shantou University
- Guangdong, P. R. China
| | - Guanghui Chen
- Department of Chemistry
- Shantou University
- Guangdong, P. R. China
| | - Di Wu
- State Key Laboratory of Theoretical and Computational Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- Changchun, P. R. China
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39
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