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Fülöp D, Varga Z, Kiss É, Gyulai G. Interfacial Behavior of Biodegradable Poly(lactic- co-glycolic acid)-Pluronic F127 Nanoparticles and Its Impact on Pickering Emulsion Stability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:12353-12367. [PMID: 38848254 DOI: 10.1021/acs.langmuir.4c00147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2024]
Abstract
Biodegradable nanoparticle-based emulsions exhibit immense potential in various applications, particularly in the pharmaceutical, cosmetic, and food industries. This study delves into the intricate interfacial behavior of Pluronic F127 modified poly(lactic-co-glycolic acid) (PLGA-F127) nanoparticles, a crucial determinant of their ability to stabilize Pickering emulsions. Employing a combination of Langmuir balance, surface tension, and diffusion coefficient measurements, we investigate the interfacial dynamics of PLGA-F127 nanoparticles under varying temperature and ionic strength conditions. Theoretical calculations are employed to elucidate the underlying mechanisms governing these phenomena. Our findings reveal a profound influence of temperature-dependent Pluronic layer behavior and electrostatic and steric interactions on the interfacial dynamics. Nonlinear changes in surface tension are observed, reflecting the interplay of these factors. Particle aggregation is found to be prevalent at elevated temperatures and ionic strengths, compromising the stability and emulsification efficiency of the formed emulsions. This work provides insights into the rational design of stable and efficient biodegradable nanoparticle-based Pickering emulsions, broadening their potential applications in various fields.
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Affiliation(s)
- Dániel Fülöp
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, P.O. Box 32, H-1518 Budapest, Hungary
- Hevesy György Ph.D. School of Chemistry, Eötvös Loránd University, P.O. Box 32, H-1518 Budapest, Hungary
| | - Zoltán Varga
- Biological Nanochemistry Research Group, HUN-REN Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
- Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Éva Kiss
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, P.O. Box 32, H-1518 Budapest, Hungary
| | - Gergő Gyulai
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, P.O. Box 32, H-1518 Budapest, Hungary
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Romanenko A, Kalas B, Hermann P, Hakkel O, Illés L, Fried M, Fürjes P, Gyulai G, Petrik P. Membrane-Based In Situ Mid-Infrared Spectroscopic Ellipsometry: A Study on the Membrane Affinity of Polylactide- co-glycolide Nanoparticulate Systems. Anal Chem 2020; 93:981-991. [PMID: 33315391 PMCID: PMC7872323 DOI: 10.1021/acs.analchem.0c03763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
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Mid-infrared (IR) ellipsometry of
thin films and molecule layers
at solid–liquid interfaces has been a challenge because of
the absorption of light in water. It has been usually overcome by
using configurations utilizing illumination through the solid substrate.
However, the access to the solid–liquid interface in a broad
spectral range is also challenging due to the limited transparency
of most structural materials in the IR wavelength range. In this work,
we propose a concept of a microfabricated analysis cell based on an
IR-transparent Si membrane with advantages of a robust design, flexible
adaptation to existing equipment, small volume, multiple-angle capabilities,
broad wavelength range, and opportunities of multilayer applications
for adjusted ranges of high sensitivity. The chamber was prepared
by 3D micromachining technology utilizing deep reactive ion etching
of a silicon-on-insulator wafer and bonded to a polydimethylsiloxane
microfluidic injection system resulting in a cell volume of approximately
50 μL. The mechanical stability of the 2 and 5 μm-thick
membranes was tested using different “backbone” reinforcement
structures. It was proved that the 5 μm-thick membranes are
stable at lateral cell sizes of 5 mm by 20 mm. The cell provides good
intensity and adjustment capabilities on the stage of a commercial
mid-IR ellipsometer. The membrane configuration also provides optical
access to the sensing interfaces at a broad range of incident angles,
which is a significant advantage in many potential sensing structure
configurations, such as plasmonic, multilayer, 2D, or metamaterial
applications.
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Affiliation(s)
- Alekszej Romanenko
- Centre for Energy Research, Konkoly Thege Miklós út 29-33, H-1121 Budapest, Hungary.,Doctoral School of Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Benjamin Kalas
- Centre for Energy Research, Konkoly Thege Miklós út 29-33, H-1121 Budapest, Hungary
| | - Petra Hermann
- Centre for Energy Research, Konkoly Thege Miklós út 29-33, H-1121 Budapest, Hungary
| | - Orsolya Hakkel
- Centre for Energy Research, Konkoly Thege Miklós út 29-33, H-1121 Budapest, Hungary
| | - Levente Illés
- Centre for Energy Research, Konkoly Thege Miklós út 29-33, H-1121 Budapest, Hungary
| | - Miklós Fried
- Centre for Energy Research, Konkoly Thege Miklós út 29-33, H-1121 Budapest, Hungary.,Institute of Microelectronics and Technology, Óbuda University, Tavaszmezö u. 17, H-1084 Budapest, Hungary
| | - Peter Fürjes
- Centre for Energy Research, Konkoly Thege Miklós út 29-33, H-1121 Budapest, Hungary
| | - Gergö Gyulai
- Laboratory of Interfaces and Nanostructures, Eötvös Loránd University, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
| | - Peter Petrik
- Centre for Energy Research, Konkoly Thege Miklós út 29-33, H-1121 Budapest, Hungary
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Drug Conjugation Induced Modulation of Structural and Membrane Interaction Features of Cationic Cell-Permeable Peptides. Int J Mol Sci 2020; 21:ijms21062197. [PMID: 32235796 PMCID: PMC7139830 DOI: 10.3390/ijms21062197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/19/2020] [Accepted: 03/20/2020] [Indexed: 02/07/2023] Open
Abstract
Cell-penetrating peptides might have great potential for enhancing the therapeutic effect of drug molecules against such dangerous pathogens as Mycobacterium tuberculosis (Mtb), which causes a major health problem worldwide. A set of cationic cell-penetration peptides with various hydrophobicity were selected and synthesized as drug carrier of isoniazid (INH), a first-line antibacterial agent against tuberculosis. Molecular interactions between the peptides and their INH-conjugates with cell-membrane-forming lipid layers composed of DPPC and mycolic acid (a characteristic component of Mtb cell wall) were evaluated, using the Langmuir balance technique. Secondary structure of the INH conjugates was analyzed and compared to that of the native peptides by circular dichroism spectroscopic experiments performed in aqueous and membrane mimetic environment. A correlation was found between the conjugation induced conformational and membrane affinity changes of the INH-peptide conjugates. The degree and mode of interaction were also characterized by AFM imaging of penetrated lipid layers. In vitro biological evaluation was performed with Penetratin and Transportan conjugates. Results showed similar internalization rate into EBC-1 human squamous cell carcinoma, but markedly different subcellular localization and activity on intracellular Mtb.
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Gyulai G, Ouanzi F, Bertóti I, Mohai M, Kolonits T, Horváti K, Bősze S. Chemical structure and in vitro cellular uptake of luminescent carbon quantum dots prepared by solvothermal and microwave assisted techniques. J Colloid Interface Sci 2019; 549:150-161. [PMID: 31029843 DOI: 10.1016/j.jcis.2019.04.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 04/15/2019] [Accepted: 04/16/2019] [Indexed: 11/28/2022]
Abstract
Carbon quantum dots (CQDs) are a novel family of fluorescent materials that could be employed as non-toxic alternatives to molecular fluorescent dyes in biological research and also in medicine. Four different preparation approaches, including microwave assisted heating and solvent refluxing, were explored. In addition to the widely used microwave assisted methods, a simple convenient new procedure is presented here for the particle synthesis. A detailed X-ray photoelectron spectroscopic (XPS) analysis was employed to characterize the composition, and more importantly, the chemical structure of the CQD samples and the interrelation of the characteristic surface chemical groups with the fluorescence properties and with surface polarity was unambiguously established. In vitro cellular internalization experiments documented their applicability as fluorescence labels while non-toxic properties were also approved. It was demonstrated that the adequate water-dispersibility of the particles plays a crucial role in their biological application. The synthetized CQD samples turned to be promising for cellular imaging applications both in laser illuminated flow cytometric measurements and in fluorescence microscopy.
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Affiliation(s)
- Gergő Gyulai
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, Budapest, P.O. Box 32, H-1518 Budapest, Hungary.
| | - Fatima Ouanzi
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, Budapest, P.O. Box 32, H-1518 Budapest, Hungary
| | - Imre Bertóti
- Institute of Materials and Environmental Chemistry, Research Centre of Natural Sciences, Hungarian Academy of Sciences, Budapest, PO Box 286, H-1519 Budapest, Hungary
| | - Miklós Mohai
- Institute of Materials and Environmental Chemistry, Research Centre of Natural Sciences, Hungarian Academy of Sciences, Budapest, PO Box 286, H-1519 Budapest, Hungary
| | - Tamás Kolonits
- Department of Materials Physics, Eötvös Loránd University, Budapest, P.O. Box 32, H-1518, Hungary
| | - Kata Horváti
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, Budapest 112, P.O. Box 32, H-1518 Budapest, Hungary
| | - Szilvia Bősze
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, Budapest 112, P.O. Box 32, H-1518 Budapest, Hungary
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Horváti K, Gyulai G, Csámpai A, Rohonczy J, Kiss É, Bősze S. Surface Layer Modification of Poly(d,l-lactic- co-glycolic acid) Nanoparticles with Targeting Peptide: A Convenient Synthetic Route for Pluronic F127-Tuftsin Conjugate. Bioconjug Chem 2018; 29:1495-1499. [PMID: 29669198 DOI: 10.1021/acs.bioconjchem.8b00156] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Nanoparticles consisting of biodegradable poly(d,l-lactic- co-glycolic acid) (PLGA) are promising carriers for drug molecules to improve the treatment of tuberculosis. Surface modifiers, such as Pluronic F127, are essential for biocompatibility and for the protection against particle aggregation. This study demonstrates a successful approach to conjugate Pluronic F127 coated PLGA nanoparticles with Tuftsin, which has been reported as a macrophage-targeting peptide. Transformation of Pluronic F127 hydroxyl groups-which have limited reactivity-into aldehyde groups provide a convenient way to bind aminooxy-peptide derivatives in a one-step reaction. We have also investigated that this change has no effect on the physicochemical properties of the nanoparticles. Our data showed that coating nanoparticles with Pluronic-Tuftsin conjugate markedly increased the internalization rate and the intracellular activity of the encapsulated drug candidate against Mycobacterium tuberculosis. By employing this approach, a large variety of peptide targeted PLGA nanoparticles can be designed for drug delivery.
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Affiliation(s)
- Kata Horváti
- MTA-ELTE Research Group of Peptide Chemistry, Hungarian Academy of Sciences Budapest , and ‡Laboratory of Interfaces and Nanostructures , ∥Department of Organic Chemistry , and §Department of Inorganic Chemistry , Eötvös Loránd University , Budapest 112, P.O. Box 32, H-1518 , Hungary
| | | | | | | | | | - Szilvia Bősze
- MTA-ELTE Research Group of Peptide Chemistry, Hungarian Academy of Sciences Budapest , and ‡Laboratory of Interfaces and Nanostructures , ∥Department of Organic Chemistry , and §Department of Inorganic Chemistry , Eötvös Loránd University , Budapest 112, P.O. Box 32, H-1518 , Hungary
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Ganji N, Khan IA, Bothun GD. Surface Activity of Poly(ethylene glycol)-Coated Silver Nanoparticles in the Presence of a Lipid Monolayer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2039-2045. [PMID: 29309159 DOI: 10.1021/acs.langmuir.7b03743] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have investigated the surface activity of poly(ethylene glycol) (PEG)-coated silver nanoparticles (Ag-PEG) in the presence or absence of lipid monolayers comprised of monounsaturated dioleoylphosphocholine and dioleoylphosphoglycerol (DOPC/DOPG; 1:1 mol ratio). Dynamic measurements of surface pressure demonstrated that Ag-PEG were surface-active at the air/water interface. Surface excess concentrations suggested that at high Ag-PEG subphase concentrations, Ag-PEG assembled as densely packed monolayers in the presence and absence of a lipid monolayer. The presence of a lipid monolayer led to only a slight decrease in the excess surface concentration of Ag-PEG. Surface pressure-area isotherms showed that in the absence of lipids Ag-PEG increased the surface pressure up to 45 mN m-1 upon compression before the Ag-PEG surface layer collapsed. Our results suggest that surface activity of Ag-PEG was due to hydrophobic interactions imparted by a combination of the amphiphilic polymer coating and the hydrophobic dodecanethiol ligands bound to the Ag-PEG surface. With lipid present, Ag-PEG + lipid surface pressure-area (π-A) isotherms reflected Ag-PEG incorporation within the lipid monolayers. At high Ag-PEG concentrations, the π-A isotherms of the Ag-PEG + lipid films closely resembled that of Ag-PEG alone with a minimal contribution from the lipids present. Analysis of the subphase silver (Ag) and phosphorus (P) concentrations revealed that most of the adsorbed material remained at the air/lipid/water interface and was not forced into the aqueous subphase upon compression, confirming the presence of a composite Ag-PEG + lipid film. While interactions between "water-soluble" nanoparticles and lipids are often considered to be dominated by electrostatic interactions, these results provide further evidence that the amphiphilic character of a nanoparticle coating can also play a significant role.
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Affiliation(s)
- Nasim Ganji
- Department of Chemical Engineering, University of Rhode Island , 51 Lower College Road, Kinston, Rhode Island 02881, United States
| | - Iftheker A Khan
- Department of Chemical Engineering, University of Rhode Island , 51 Lower College Road, Kinston, Rhode Island 02881, United States
| | - Geoffrey D Bothun
- Department of Chemical Engineering, University of Rhode Island , 51 Lower College Road, Kinston, Rhode Island 02881, United States
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Gyulai G, Kiss É. Interaction of poly(lactic-co-glycolic acid) nanoparticles at fluid interfaces. J Colloid Interface Sci 2017; 500:9-19. [PMID: 28395164 DOI: 10.1016/j.jcis.2017.03.114] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 03/30/2017] [Accepted: 03/30/2017] [Indexed: 10/19/2022]
Abstract
HYPOTHESIS Adsorption and localization of nanoparticles at fluid interfaces are key factors in processes like transport through membranes or emulsion stabilization. Adsorption of poly(lactic-co-glycolic acid) (PLGA) and Pluronic coated PLGA nanoparticles (NPs) were studied at three different fluid interfaces. The effect of particle surface modification and type of interface was investigated with the aim of fine tuning interfacial interaction of the nanoparticles. EXPERIMENTS Surface tension measurements were carried out to determine the surface activity and adsorption kinetics of the particles. Particles layers at the air/water interface were further studied using the Langmuir balance technique by recording the surface pressure-area isotherms. Interfacial rheological measurements were performed to characterize the structural properties of the nanoparticle interfacial films. FINDINGS Interfacial adsorption and its kinetics were explained by the diffusion controlled adsorption theory and considering the energy barrier of particle transport to the interface. Surface modification by Pluronic increased the interfacial activity of nanoparticles at all interfaces. Surface activity of PLGA-Pluronic particles could be described by the contributions of both the PLGA NPs and the effective portion of their Pluronic shell. Both particle films present mainly elastic dilatational properties suggesting that particles are in kinetically separated state.
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Affiliation(s)
- Gergő Gyulai
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, Budapest 112, PO Box 32, H-1518 Budapest, Hungary.
| | - Éva Kiss
- Laboratory of Interfaces and Nanostructures, Institute of Chemistry, Eötvös Loránd University, Budapest 112, PO Box 32, H-1518 Budapest, Hungary
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Kasza G, Gyulai G, Ábrahám Á, Szarka G, Iván B, Kiss É. Amphiphilic hyperbranched polyglycerols in a new role as highly efficient multifunctional surface active stabilizers for poly(lactic/glycolic acid) nanoparticles. RSC Adv 2017. [DOI: 10.1039/c6ra27843d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Amphiphilic hyperbranched polyglycerols synthesized with alkyl alcohol initiators are efficient surfactants and stabilizers for poly(lactic/glycolic acid) nanoparticles, which offer various new possibilities for surface functionalized nanosystems.
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Affiliation(s)
- György Kasza
- Polymer Chemistry Research Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
| | - Gergő Gyulai
- Laboratory of Interfaces and Nanostructures
- Institute of Chemistry
- Eötvös Loránd University
- H-1518 Budapest 112
- Hungary
| | - Ágnes Ábrahám
- Laboratory of Interfaces and Nanostructures
- Institute of Chemistry
- Eötvös Loránd University
- H-1518 Budapest 112
- Hungary
| | - Györgyi Szarka
- Polymer Chemistry Research Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
| | - Béla Iván
- Polymer Chemistry Research Group
- Institute of Materials and Environmental Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- H-1117 Budapest
| | - Éva Kiss
- Laboratory of Interfaces and Nanostructures
- Institute of Chemistry
- Eötvös Loránd University
- H-1518 Budapest 112
- Hungary
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Kiss É, Gyulai G, Pénzes CB, Idei M, Horváti K, Bacsa B, Bősze S. Tuneable surface modification of PLGA nanoparticles carrying new antitubercular drug candidate. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.05.048] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Julius Vancso G. Advanced macromolecular systems across the length scales: Smart, nanostructured polymers for controlled molecular release and at biological interfaces. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.06.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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