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Villanueva ME, Bar L, Redondo-Morata L, Namdar P, Ruysschaert JM, Pabst G, Vandier C, María Bouchet A, Losada-Pérez P. Spontaneous nanotube formation of an asymmetric glycolipid. J Colloid Interface Sci 2024; 671:410-422. [PMID: 38815376 DOI: 10.1016/j.jcis.2024.05.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/06/2024] [Accepted: 05/18/2024] [Indexed: 06/01/2024]
Abstract
Over the past decades, advances in lipid nanotechnology have shown that self-assembled lipid structures providing ease of preparation, chemical stability, and biocompatibility represent a landmark on the development of multidisciplinary technologies. Lipid nanotubes (LNTs) are a unique class of lipid self-assembled structures, bearing unique properties such as high-aspect ratio, tunable diameter size, and precise molecular recognition. They can be obtained either by the action of external factors to already formed vesicles or spontaneously, the latter depending strongly on subtle molecular features. Here, we report on the spontaneous formation of supported lipid nanotubes of a particular type of glycolipid, ohmline, whose hydrophobic core displays remarkable asymmetry. The combination of bulk and surface-sensitive techniques indicates that below its main transition, ohmline displays an interdigitated gel phase, likely driven by the unique asymmetry in its hydrophobic core. Enhanced order packing by interdigitation favors the formation of ohmline nanotubes in agreement with chiral-based models of nanotube formation. The findings presented in this work call for additional studies to link lipid molecular structure-assembly relationships, whose understanding is relevant for the controlled design of lipid nanotubes networks in particular and controlled design of soft-matter nanomaterials in general.
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Affiliation(s)
- Martín E Villanueva
- Experimental Soft Matter and Thermal Physics (EST) Group, Department of Physics, Université libre de Bruxelles, Boulevard du Triomphe CP223, Brussels 1050, Belgium.
| | - Laure Bar
- Experimental Soft Matter and Thermal Physics (EST) Group, Department of Physics, Université libre de Bruxelles, Boulevard du Triomphe CP223, Brussels 1050, Belgium
| | - Lorena Redondo-Morata
- Aix-Marseille University, INSERM, DyNaMo, Turing Centre for Living systems, Marseille 13009, France
| | - Peter Namdar
- Biophysics, Institute of Molecular Biosciences, University of Graz, NAWI Graz, Humboldtstr 50/III, Graz 8010, Austria
| | - Jean-Marie Ruysschaert
- Structure and Functions of Biological Membranes, Université libre de Bruxelles, Boulevard du Triomphe CP223, Brussels 1050, Belgium; Lifesome Therapeutics S. L., Calle Faraday 7, Madrid 28049, Spain
| | - Georg Pabst
- Biophysics, Institute of Molecular Biosciences, University of Graz, NAWI Graz, Humboldtstr 50/III, Graz 8010, Austria
| | - Christophe Vandier
- Niche, Nutrition, Cancer and Oxidative Metabolism (N2Cox) UMR 1069, University of Tours, INSERM, Tours, France; Lifesome Therapeutics S. L., Calle Faraday 7, Madrid 28049, Spain
| | | | - Patricia Losada-Pérez
- Experimental Soft Matter and Thermal Physics (EST) Group, Department of Physics, Université libre de Bruxelles, Boulevard du Triomphe CP223, Brussels 1050, Belgium.
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Kobal MB, Camacho SA, Moreira LG, Toledo KA, Tada DB, Aoki PHB. Unveiling the mechanisms underlying photothermal efficiency of gold shell-isolated nanoparticles (AuSHINs) on ductal mammary carcinoma cells (BT-474). Biophys Chem 2023; 300:107077. [PMID: 37515949 DOI: 10.1016/j.bpc.2023.107077] [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: 05/18/2023] [Revised: 07/05/2023] [Accepted: 07/17/2023] [Indexed: 07/31/2023]
Abstract
Gold nanoparticles are valuable photothermal agents owing to their efficient photothermal conversion, photobleaching resistance, and potential surface functionalization. Herein, we combined bioinspired membranes with in vitro assays to elicit the molecular mechanisms of gold shell-isolated nanoparticles (AuSHINs) on ductal mammary carcinoma cells (BT-474). Langmuir and Langmuir-Schaefer (LS) films were handled to build biomembranes from BT-474 lipid extract. AuSHINs incorporation led to surface pressure-area (π-A) isotherms expansion, increasing membrane flexibility. Fourier-transform infrared spectroscopy (FTIR) of LS multilayers revealed electrostatic AuSHINs interaction with head portions of BT-474 lipid extract, causing lipid chain disorganization. Limited AuSHINs insertion into monolayer contributed to hydroperoxidation of the unsaturated lipids upon irradiation, consistently with the surface area increments of ca. 2.0%. In fact, membrane disruption of irradiated BT-474 cells containing AuSHINs was confirmed by confocal microscopy and LDH leakage, with greater damage at 2.2 × 1013 AuSHINs/mL. Furthermore, the decrease in nuclei dimensions indicates cell death through photoinduced damage.
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Affiliation(s)
- M B Kobal
- São Paulo State University (UNESP), School of Sciences, Humanities and Languages, Assis, SP 19806-900, Brazil
| | - S A Camacho
- São Paulo State University (UNESP), School of Sciences, Humanities and Languages, Assis, SP 19806-900, Brazil; University of São Paulo (USP), São Carlos Institute of Physics (IFSC), São Carlos, SP 13566-590, Brazil
| | - L G Moreira
- São Paulo State University (UNESP), School of Sciences, Humanities and Languages, Assis, SP 19806-900, Brazil
| | - K A Toledo
- São Paulo State University (UNESP), School of Sciences, Humanities and Languages, Assis, SP 19806-900, Brazil; São Paulo State University (UNESP), Institute of Biosciences, Letters and Exact Sciences, São José do Rio Preto, SP 15054-000, Brazil
| | - D B Tada
- Federal University of São Paulo (UNIFESP), Institute of Science and Technology, São José dos Campos, SP 12231-280, Brazil
| | - P H B Aoki
- São Paulo State University (UNESP), School of Sciences, Humanities and Languages, Assis, SP 19806-900, Brazil.
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Lee B, Sung M, Shin K, Hyun Lee J, Woong Kim J. Microphase transitions of Langmuir-Blodgett lipid-assembled monolayers with new types of ceramides, ultra-long-chain ceramide and 1-O-acylceramide. J Colloid Interface Sci 2023; 642:523-531. [PMID: 37028159 DOI: 10.1016/j.jcis.2023.03.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023]
Abstract
HYPOTHESIS Intercellular lipid lamellae, consisting of ceramide, cholesterol, and free fatty acids, are the primary pathways for substances in the stratum corneum (SC). The microphase transition of lipid-assembled monolayers (LAMs), mimicking an initial layer of the SC, would be affected by new types of ceramides: ceramide with ultra-long chain (CULC) and 1-O-acylceramide (CENP) with three chains in different direction. EXPERIMENTS The LAMs were fabricated with varying the mixing ratio of CULC (or CENP) against base ceramide via Langmuir-Blodgett assembly. Surface pressure-area isotherms and elastic modulus-surface pressure plots were obtained to characterize π-dependent microphase transitions. The surface morphology of LAMs was observed by atomic force microscopy. FINDINGS The CULCs favored lateral lipid packing, and the CENPs hindered the lateral lipid packing by lying alignment, which was due to their different molecular structures and conformations. The sporadic clusters and empty spaces in the LAMs with CULC were presumably due to the short-range interactions and self-entanglements of ultra-long alkyl chains following the freely jointed chain model, respectively, which was not noticeably observed in the neat LAM films and the LAM films with CENP. The addition of surfactants disrupted the lateral packing of lipids, thus weakening the LAM elasticity. These findings allowed us to understand the role of CULC and CENP in the lipid assemblies and microphase transition behaviors in an initial layer of SC.
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Xie M, Gao M, Yun Y, Malmsten M, Rotello VM, Zboril R, Akhavan O, Kraskouski A, Amalraj J, Cai X, Lu J, Zheng H, Li R. Antibacterial Nanomaterials: Mechanisms, Impacts on Antimicrobial Resistance and Design Principles. Angew Chem Int Ed Engl 2023; 62:e202217345. [PMID: 36718001 DOI: 10.1002/anie.202217345] [Citation(s) in RCA: 56] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 01/27/2023] [Accepted: 01/30/2023] [Indexed: 02/01/2023]
Abstract
Antimicrobial resistance (AMR) is one of the biggest threats to the environment and health. AMR rapidly invalidates conventional antibiotics, and antimicrobial nanomaterials have been increasingly explored as alternatives. Interestingly, several antimicrobial nanomaterials show AMR-independent antimicrobial effects without detectable new resistance and have therefore been suggested to prevent AMR evolution. In contrast, some are found to trigger the evolution of AMR. Given these seemingly conflicting findings, a timely discussion of the two faces of antimicrobial nanomaterials is urgently needed. This review systematically compares the killing mechanisms and structure-activity relationships of antibiotics and antimicrobial nanomaterials. We then focus on nano-microbe interactions to elucidate the impacts of molecular initiating events on AMR evolution. Finally, we provide an outlook on future antimicrobial nanomaterials and propose design principles for the prevention of AMR evolution.
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Affiliation(s)
- Maomao Xie
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Meng Gao
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Yang Yun
- College of Environmental & Resource Sciences, Shanxi University, Taiyuan, 030006, Shanxi, China
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, 2100, Copenhagen, Denmark.,Department of Physical Chemistry 1, University of Lund, 22100, Lund, Sweden
| | - Vincent M Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 N. Pleasant St., Amherst, USA
| | - Radek Zboril
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 241/27, Olomouc, 783 71, Czech Republic.,Nanotechnology Centre, Centre of Energy and Environmental Technologies, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, Ostrava-Poruba, 708 00, Czech Republic
| | - Omid Akhavan
- Condensed Matter National Laboratory, P.O. Box 1956838861, Tehran, Iran
| | - Aliaksandr Kraskouski
- Department of Physicochemistry of Thin Film Materials, Institute of Chemistry of New Materials of NAS of Belarus, 36 F. Skaryna Str., 220084, Minsk, Belarus
| | - John Amalraj
- Laboratory of Materials Science, Instituto de Química de Recursos Naturales, Universidad de Talca, P.O. Box 747, Talca, Chile
| | - Xiaoming Cai
- School of Public Health, Suzhou Medical College, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and Materials Science, National Center for International Research on Intelligent Nano-Materials and Detection Technology in Environmental Protection, Soochow University, Suzhou, 215123, China
| | - Huizhen Zheng
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou, 215123, Jiangsu, China
| | - Ruibin Li
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences (RAD-X), Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou Medical College, Soochow University, Suzhou, 215123, Jiangsu, China
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Interaction between Pharmaceutical Drugs and Polymer-Coated Fe 3O 4 Magnetic Nanoparticles with Langmuir Monolayers as Cellular Membrane Models. Pharmaceutics 2023; 15:pharmaceutics15020311. [PMID: 36839633 PMCID: PMC9961141 DOI: 10.3390/pharmaceutics15020311] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/09/2023] [Accepted: 01/14/2023] [Indexed: 01/19/2023] Open
Abstract
Surface modification of magnetic nanoparticles (MNPs) has been reported to play a significant role in determining their interactions with cell membranes. In this research, the interactions between polymer functionalized (chitosan, CHI or diethylamino-ethyl dextran, DEAE-D) Fe3O4 MNPs, pharmaceutical drugs and model cell membranes were investigated by Langmuir isotherms and adsorption measurements. In this study, 1,2-distearoyl-sn-glycerol-3-phosphate (DSPA) phospholipid monolayers were used as cell membrane models. Insertion experiments demonstrate that diclofenac (DCFN) is not absorbed at the air-water interface, whereas triflupromazine (TFPZ) has a MIP (maximum insertion pressure) of 35 m Nm-1. The insertion of composites MNPs:TFPZ or DCFN has larger MIP values, indicating that the MNPs are adsorbed on the monolayer with the drugs. An Fe3O4@CHI:DCFN composite presented an MIP of 39 m Nm-1 and Fe3O4@DEAE-D:DCFN presented an impressive MIP of 67 mNm-1. In the case of TFPZ, the enhancement in the MIP values is also evident, being 42 mNm-1 for Fe3O4@CHI:TFPZ and 40 mNm-1 for Fe3O4@DEAE-D:DCFN composite. All MNPs:drugs composites have MIP values greater than commonly accepted membrane pressure values, indicating that MNPs:drugs can penetrate a cellular membrane. The fact that the composite MNPs:drugs present greater MIP values than separated compounds indicates that polymer-coated MNPs can act as good drug delivery systems.
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Dopierała K, Syguda A, Wojcieszak M, Materna K. Effect of 1-alkyl-1-methylpiperidinium bromides on lipids of fungal plasma membrane and lung surfactant. Chem Phys Lipids 2022; 248:105240. [PMID: 36174723 DOI: 10.1016/j.chemphyslip.2022.105240] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 09/04/2022] [Accepted: 09/18/2022] [Indexed: 01/25/2023]
Abstract
This study aimed to investigate the potential of 1-alkyl-1-methylpiperidinium bromides as fungicides and evaluate their impact on the human respiratory system when spread in the atmosphere. We investigated the behavior of membrane lipids and model membranes in the presence of a series of amphiphilic 1-alkyl-1-methylpiperidinium bromides ([MePipCn][Br]), differing in the alkyl chain length (n = 4 - 18). The experiments were performed with the Langmuir monolayer technique using 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and ergosterol (ERG)-the main components of lung surfactant and fungal plasma membrane, respectively and their mixtures with phospholipids and sterols. The mixtures were chosen as the representatives of target and non-target organisms. The surface pressure-area isotherms were obtained by compressing monolayers in the presence of [MePipCn][Br] in the subphase. The results were analyzed in terms of area expansion/contraction and compressibility. The surface activity of the studied organic salts was also studied. In addition, the monolayers were deposited on a solid surface and their topography was investigated using atomic force microscopy. This research implies that the studied compounds may destabilize efficiently the fungal plasma membrane. At the same time we demonstrated the significant impact of 1-alkyl-1-methylpiperidinium bromides on the lung surfactant layer. The interaction between [MePipCn][Br] and model membranes depends on the concentration and alkyl chain length of organic salt. The key role of contact time has been also revealed. The results may be helpful in the reasonable development of new agrochemical products aiming at the treatment of fungal infections in plants. In addition, our study indicates the significance of proper safety management while spreading the fungicides in the environment.
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Affiliation(s)
- Katarzyna Dopierała
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznań, Poland.
| | - Anna Syguda
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznań, Poland
| | - Marta Wojcieszak
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznań, Poland
| | - Katarzyna Materna
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznań, Poland
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Janani B, Okla MK, Brindha B, Dawoud TM, Alaraidh IA, Soufan W, Abdel-Maksoud MA, Aufy M, Studenik CR, Khan SS. Pharmaceuticals removal by synergistic adsorption and S-scheme photocatalysis using nano-CeO 2-coupled Fe 3O 4 on a CTAB matrix and investigation of the nanocomposite's antibacterial and antibiofilm activities: intrinsic degradation mechanism. NEW J CHEM 2022. [DOI: 10.1039/d2nj02400d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
S-Scheme photocatalytic mechanism of a fabricated nano-heterojunction.
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Affiliation(s)
- B. Janani
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, 638402, Tamil Nadu, India
| | - Mohammad K. Okla
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - B. Brindha
- Nanobiotechnology Laboratory, Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, 638402, Tamil Nadu, India
| | - Turki M. Dawoud
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ibrahim A. Alaraidh
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Walid Soufan
- Plant Production Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | - Mostafa A. Abdel-Maksoud
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mohammed Aufy
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, Austria
| | - Christian R. Studenik
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, Austria
| | - S. Sudheer Khan
- Department of Oral Medicine and Radiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai-600077, Tamil Nadu, India
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Parra-Ortiz E, Malmsten M. Photocatalytic nanoparticles - From membrane interactions to antimicrobial and antiviral effects. Adv Colloid Interface Sci 2022; 299:102526. [PMID: 34610862 DOI: 10.1016/j.cis.2021.102526] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 12/23/2022]
Abstract
As a result of increasing resistance among pathogens against antibiotics and anti-viral therapeutics, nanomaterials are attracting current interest as antimicrobial agents. Such materials offer triggered functionalities to combat challenging infections, based on either direct membrane action, effects of released ions, thermal shock induced by either light or magnetic fields, or oxidative photocatalysis. In the present overview, we focus on photocatalytic antimicrobial effects, in which light exposure triggers generation of reactive oxygen species. These, in turn, cause oxidative damage to key components in bacteria and viruses, including lipid membranes, lipopolysaccharides, proteins, and DNA/RNA. While an increasing body of studies demonstrate that potent antimicrobial effects can be achieved by photocatalytic nanomaterials, understanding of the mechanistic foundation underlying such effects is still in its infancy. Addressing this, we here provide an overview of the current understanding of the interaction of photocatalytic nanomaterials with pathogen membranes and membrane components, and how this translates into antibacterial and antiviral effects.
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Affiliation(s)
- Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, DK-2100 Copenhagen, Denmark; Physical Chemistry 1, University of Lund, S-221 00 Lund, Sweden.
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Jurek I, Szuplewska A, Chudy M, Wojciechowski K. Effect of the oat, horse chestnut, cowherb, soy, quinoa and soapwort extracts on skin‐mimicking monolayers and cell lines. J SURFACTANTS DETERG 2021. [DOI: 10.1002/jsde.12553] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ilona Jurek
- Faculty of Chemistry Warsaw University of Technology Warsaw Poland
| | | | - Michał Chudy
- Faculty of Chemistry Warsaw University of Technology Warsaw Poland
| | - Kamil Wojciechowski
- Faculty of Chemistry Warsaw University of Technology Warsaw Poland
- SaponLabs Ltd. Warsaw Poland
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Villanueva ME, Giudice F, Ambroggio E, Vico RV. Liposome Fusion Mediated by Hydrophobic Magnetic Nanoparticles Stabilized with Oleic Acid and Modulated by an External Magnetic Field. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1861-1873. [PMID: 33493398 DOI: 10.1021/acs.langmuir.0c03291] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Membrane fusion is considered relevant in countless scientific areas and biotechnological processes, ranging from vital life events to biomedicine, pharmaceuticals, and materials engineering, among others. In this study, we employed hydrophobic oleic acid (OA)-coated magnetite (Fe3O4) nanoparticles (MNP-OA) as a platform to induce the fusion of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphatidylcholine liposomes [large unilamellar vesicles (LUVs)] in a colloidal dispersion. This fusion was monitored through dynamic light scattering, turbidimetry, and fluorescence assay using the well-known Tb/dipicolinic acid (DPA) complex formation assay. MNP-OA have shown to be able to induce fusion with the mixing of liposomal inner content with direct dependence on the nanoparticle concentration added to the LUVs. Moreover, changes in the permeability of the liposome bilayer, upon the addition of MNP-OA to liposomes, were evaluated by studying the leakage of carboxyfluorescein and of the co-encapsulated Tb/DPA complex. These assays allowed us to determine that MNP-OA did not significantly modify liposome permeability during the fusion process. Transmission electron microscopy and confocal microscopy revealed that MNP-OA remained embedded in the lipid bilayer without producing membrane rupture, liposome deformation, or destruction. In addition, we evaluated the effect of applying a low-intensity magnetic field to the LUVs/MNP-OA system and observed that the nanoparticles considerably increased their fusogenic activity under this external stimulus, as well as they are capable of responding to low magnetic fields of around 0.45 mT. These results revealed the potential of hydrophobic magnetic nanoparticles, stabilized with OA, to act as a fusogen, thus representing a valuable tool for biotechnological applications.
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Affiliation(s)
- Martín E Villanueva
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC-UNC-CONICET), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, Córdoba X5000HUA, Argentina
| | - Francesca Giudice
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC-UNC-CONICET), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, Córdoba X5000HUA, Argentina
| | - Ernesto Ambroggio
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC, CONICET) and Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, Córdoba X5000HUA, Argentina
| | - Raquel V Vico
- Instituto de Investigaciones en Fisicoquímica de Córdoba (INFIQC-UNC-CONICET), Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, Ciudad Universitaria, Córdoba X5000HUA, Argentina
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11
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Pryshchepa O, Pomastowski P, Buszewski B. Silver nanoparticles: Synthesis, investigation techniques, and properties. Adv Colloid Interface Sci 2020; 284:102246. [PMID: 32977142 DOI: 10.1016/j.cis.2020.102246] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/15/2020] [Accepted: 08/18/2020] [Indexed: 12/19/2022]
Abstract
The unique silver properties, especially in the form of nanoparticles (NPs), allow to utilize them in numerous applications. For instance, Ag NPs can be utilized for the production of electronic and solar energy harvesting devices, in advanced analytical techniques (NALDI, SERS), catalysis and photocatalysis. Moreover, the Ag NPs can be useful in medicine for bioimaging, biosensing as well as in antibacterial and anticancer therapies. The Ag NPs utilization requires comprehensive knowledge about their features regarding the synthesis approaches as well as exploitation conditions. Unfortunately, a large number of scientific articles provide only restricted information according to the objects under investigation. Additionally, the results could be affected by artifacts introduced with exploited equipment, the utilized technique or sample preparation stages. However, it is rather difficult to get information about problems, which may occur during the studies. Thus, the review provides information about novel trends in the Ag NPs synthesis, among which the physical, chemical, and biological approaches can be found. Basic information about approaches for the control of critical parameters of NPs, i.e. size and shape, was also revealed. It was shown, that the reducing agent, stabilizer, the synthesis environment, including trace ions, have a direct impact on the Ag NPs properties. Further, the capabilities of modern analytical techniques for Ag NPs and nanocomposites investigations were shown, among other microscopic (optical, TEM, SEM, STEM, AFM), spectroscopic (UV-Vis, IR, Raman, NMR, electron spectroscopy, XRD), spectrometric (MALDI-TOF MS, SIMS, ICP-MS), and separation (CE, FFF, gel electrophoresis) techniques were described. The limitations and possible artifacts of the techniques were mentioned. A large number of presented techniques is a distinguishing feature, which makes the review different from others. Finally, the physicochemical and biological properties of Ag NPs were demonstrated. It was shown, that Ag NPs features are dependent on their basic parameters, such as size, shape, chemical composition, etc. At the end of the review, the modern theories of the Ag NPs toxic mechanism were shown in a way that has never been presented before. The review should be helpful for scientists in their own studies, as it can help to prepare experiments more carefully.
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Bodik M, Jergel M, Majkova E, Siffalovic P. Langmuir films of low-dimensional nanomaterials. Adv Colloid Interface Sci 2020; 283:102239. [PMID: 32854017 DOI: 10.1016/j.cis.2020.102239] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/11/2020] [Accepted: 08/11/2020] [Indexed: 02/08/2023]
Abstract
A large number of low-dimensional nanomaterials having different shapes and being dispersible in solvents open a fundamental question if there is a universal deposition technique for the monolayer formation. A monolayer formation of various nanomaterials at the air-water interface, also known as a Langmuir film, is a well-established technique even for the large group of the recently developed low-dimensional nanomaterials. In this review, we cover the monolayer formation of the zero-dimensional, one-dimensional and two-dimensional nanomaterials. Thanks to the formation of a Langmuir layer at the thermodynamic equilibrium, by using a suitable nanomaterial dispersion and subphase, the monolayers can be formed from all kinds of materials, ranging from the graphene oxide to the semiconducting quantum dots. In this review, we will discuss the basic requirements for the successful formation of monolayers and summarize the recent scientific advances in the field of Langmuir films.
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Facile fabrication of silver on magnetic nanocomposite (Fe3O4@Chitosan –AgNP nanocomposite) for catalytic reduction of anthropogenic pollutant and agricultural pathogens. Int J Biol Macromol 2020; 149:989-999. [DOI: 10.1016/j.ijbiomac.2020.01.183] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 01/01/2020] [Accepted: 01/19/2020] [Indexed: 12/30/2022]
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Fujii MY, Gato K, Ozawa Y, Hisada H, Koide T, Inoue M, Fukami T. In Situ Monitoring of Lipid Phase State Make Target Lipid Mixtures Similar to Intercellular Lipid in the Stratum Corneum. EUR J LIPID SCI TECH 2020. [DOI: 10.1002/ejlt.201900171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mika Yoshimura Fujii
- Milott Cosmetic Corporation 2976‐12 Sugeta, Kanagawa Yokohama 221‐0864 Japan
- Department of Molecular Pharmaceutics Meiji Pharmaceutical University 2‐522‐1 Noshio, Kiyose Tokyo 204‐8588 Japan
| | - Katsuhiko Gato
- Department of Molecular Pharmaceutics Meiji Pharmaceutical University 2‐522‐1 Noshio, Kiyose Tokyo 204‐8588 Japan
| | - Yosuke Ozawa
- Department of Molecular Pharmaceutics Meiji Pharmaceutical University 2‐522‐1 Noshio, Kiyose Tokyo 204‐8588 Japan
| | - Hiroshi Hisada
- Department of Molecular Pharmaceutics Meiji Pharmaceutical University 2‐522‐1 Noshio, Kiyose Tokyo 204‐8588 Japan
| | - Tatsuo Koide
- Division of Drugs National Institute of Health Sciences Setagaya Tokyo 158‐8501 Japan
| | - Motoki Inoue
- Department of Molecular Pharmaceutics Meiji Pharmaceutical University 2‐522‐1 Noshio, Kiyose Tokyo 204‐8588 Japan
| | - Toshiro Fukami
- Department of Molecular Pharmaceutics Meiji Pharmaceutical University 2‐522‐1 Noshio, Kiyose Tokyo 204‐8588 Japan
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