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Firoznezhad M, Abi-Rached R, Fulgheri F, Aroffu M, Leyva-Jiménez FJ, de la Luz Cádiz Gurrea M, Meloni MC, Corrias F, Escribano-Ferrer E, Peris JE, Manca ML, Manconi M. Design and in vitro effectiveness evaluation of Echium amoenum extract loaded in bioadhesive phospholipid vesicles tailored for mucosal delivery. Int J Pharm 2023; 634:122650. [PMID: 36716832 DOI: 10.1016/j.ijpharm.2023.122650] [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: 10/03/2022] [Revised: 01/19/2023] [Accepted: 01/22/2023] [Indexed: 01/29/2023]
Abstract
The Echium amoenum Fisch. and C.A. Mey. (E. amoenum) is an herb native from Iranian shrub, and its blue-violet flowers are traditionally used as medical plants. In the present study, an antioxidant phytocomplex was extracted from the flowers of E. amoenum by ultrasounds-assisted hydroalcoholic maceration. The main components, contained in the extract, have been detected using HPLC-DAD, and rosmarinic acid was found to be the most abundant. The antioxidant power of the extract along with the phenolic content were measured using colorimetric assays. The extract was loaded in liposomes, which were enriched adding different bioadhesive polymers (i.e., mucin, xanthan gum and carboxymethyl cellulose sodium salt) individually or in combination. The main physico-chemical properties (i.e. size, size distribution, surface charge) of the prepared vesicles were measured as well as their stability on storage. The viscosity of dispersion and the ability of vesicles to interact with mucus were evaluated measuring their stability in a mucin dispersion and mobility in a mucin film. The biocompatibility and the ability of the formulations to protect keratinocytes from damages caused by hydrogen peroxide and to promote the cell migration were measured in vitro.
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Affiliation(s)
- Mohammad Firoznezhad
- Department of Pharmacy, University of Salerno, 84084 Fisciano, SA, Italy; Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy; Dipartimento di Scienze Farmaceutiche, University of Pisa, Pisa, Italy
| | - Rita Abi-Rached
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy
| | - Federica Fulgheri
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy
| | - Matteo Aroffu
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy; NanoBioCel Group, School of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
| | - Francisco-Javier Leyva-Jiménez
- Department of Analytical Chemistry and Food Science and Technology, University of Castilla-La Mancha, Ronda de Calatrava 7, 13071 Ciudad Real, Spain; Regional Institute for Applied Scientific Research (IRICA), Area of Food Science, University of Castilla-La Mancha, Avenida Camilo Jose Cela, 10, 13071 Ciudad Real, Spain
| | - María de la Luz Cádiz Gurrea
- Department of Analytical Chemistry, Faculty of Sciences, University of Granada, Fuentenueva s/n, E-18071 Granada, Spain
| | - Maria Cristina Meloni
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy
| | - Francesco Corrias
- Food Toxicology Unit, Department of Life and Environmental Science, University Campus of Monserrato, University of Cagliari, SS 554, Cagliari 09042, Italy
| | - Elvira Escribano-Ferrer
- Biopharmaceutics and Pharmacokinetics Unit, Institute for Nanoscience and Nanotechnology, University of Barcelona, Barcelona, Spain
| | - Josè Esteban Peris
- Department of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Burjassot, 46100 Valencia, Spain
| | - Maria Letizia Manca
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy.
| | - Maria Manconi
- Department of Life and Environmental Sciences, University of Cagliari, 09124 Cagliari, Italy
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Capocefalo A, Bizien T, Sennato S, Ghofraniha N, Bordi F, Brasili F. Responsivity of Fractal Nanoparticle Assemblies to Multiple Stimuli: Structural Insights on the Modulation of the Optical Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1529. [PMID: 35564238 PMCID: PMC9099587 DOI: 10.3390/nano12091529] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/23/2022] [Accepted: 04/28/2022] [Indexed: 11/16/2022]
Abstract
Multi-responsive nanomaterials based on the self-limited assembly of plasmonic nanoparticles are of great interest due to their widespread employment in sensing applications. We present a thorough investigation of a hybrid nanomaterial based on the protein-mediated aggregation of gold nanoparticles at varying protein concentration, pH and temperature. By combining Small Angle X-ray Scattering with extinction spectroscopy, we are able to frame the morphological features of the formed fractal aggregates in a theoretical model based on patchy interactions. Based on this, we established the main factors that determine the assembly process and their strong correlation with the optical properties of the assemblies. Moreover, the calibration curves that we obtained for each parameter investigated based on the extinction spectra point out to the notable flexibility of this nanomaterial, enabling the selection of different working ranges with high sensitivity. Our study opens for the rational tuning of the morphology and the optical properties of plasmonic assemblies to design colorimetric sensors with improved performances.
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Affiliation(s)
- Angela Capocefalo
- Institute for Complex Systems (ISC-CNR), National Research Council, 00185 Rome, Italy; (S.S.); (N.G.); (F.B.)
- Department of Physics, Sapienza University of Rome, 00185 Rome, Italy
| | - Thomas Bizien
- Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, CEDEX, 91192 Gif-sur-Yvette, France;
| | - Simona Sennato
- Institute for Complex Systems (ISC-CNR), National Research Council, 00185 Rome, Italy; (S.S.); (N.G.); (F.B.)
| | - Neda Ghofraniha
- Institute for Complex Systems (ISC-CNR), National Research Council, 00185 Rome, Italy; (S.S.); (N.G.); (F.B.)
| | - Federico Bordi
- Institute for Complex Systems (ISC-CNR), National Research Council, 00185 Rome, Italy; (S.S.); (N.G.); (F.B.)
- Department of Physics, Sapienza University of Rome, 00185 Rome, Italy
| | - Francesco Brasili
- Institute for Complex Systems (ISC-CNR), National Research Council, 00185 Rome, Italy; (S.S.); (N.G.); (F.B.)
- Department of Physics, Sapienza University of Rome, 00185 Rome, Italy
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3
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Mehta S, Bahadur J, Sen D, Aswal VK, Kohlbrecher J. Unravelling Polyethylenimine Mediated Non-monotonic Stability Behaviour of Silica Colloids: Role of Competing Electrostatic and Entropic Interactions. Phys Chem Chem Phys 2022; 24:21740-21749. [DOI: 10.1039/d2cp02699f] [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
Polymer-mediated interactions play an important role in the stability of the colloids and therefore, are paramount for both fundamental as well as scientific interests. The stability of the colloids in...
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Gnopo YMD, Misra A, Hsu HL, DeLisa MP, Daniel S, Putnam D. Induced fusion and aggregation of bacterial outer membrane vesicles: Experimental and theoretical analysis. J Colloid Interface Sci 2020; 578:522-532. [PMID: 32540551 PMCID: PMC7487024 DOI: 10.1016/j.jcis.2020.04.068] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 11/15/2022]
Abstract
Recombinantly engineered bacterial outer membrane vesicles (OMVs) are promising vaccine delivery vehicles. The diversity of exogenous antigens delivered by OMVs can be enhanced by induced fusion of OMV populations. To date there are no reports of induced fusion of bacterial OMVs. Here we measure the pH and salt-induced aggregation and fusion of OMVs and analyze the processes against the Derjaguin-Landau-Verwey-Overbeek (DLVO) colloidal stability model. Vesicle aggregation and fusion kinetics were investigated for OMVs isolated from native E. coli (Nissle 1917) and lipopolysaccharide (LPS) modified E. coli (ClearColi) strains to evaluate the effect of lipid type on vesicle aggregation and fusion. Electrolytes and low pHs induced OMV aggregation for both native and modified LPS constructs, approaching a calculated fusion efficiency of ~25% (i.e. ~1/4 of collision events lead to fusion). However, high fusion efficiency was achieved for Nissle OMVs solely with decreased pH as opposed to a combination of low pH and increased divalent counterion concentration for ClearColi OMVs. The lipid composition of the OMVs from Nissle negatively impacted fusion in the presence of electrolytes, causing higher deviations from DLVO-predicted critical coagulation concentrations with monovalent counterions. The outcome of the work is a defined set of conditions under which investigators can induce OMVs to fuse and make various combinations of vesicle compositions.
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Affiliation(s)
- Yehou M D Gnopo
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Aditya Misra
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Hung-Lun Hsu
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Matthew P DeLisa
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Susan Daniel
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA
| | - David Putnam
- Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA; Nancy E. and Peter C. Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA.
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Ivashkov OV, Sybachin AV, Efimova AA, Orlov VN, Pergushov DV, Schmalz H, Yaroslavov AA. Composition and properties of complexes between anionic liposomes and diblock copolymers with cationic and poly(ethylene oxide) blocks. POLYM INT 2017. [DOI: 10.1002/pi.5431] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Oleg V Ivashkov
- Department of Chemistry; MV Lomonosov Moscow State University; Moscow Russia
| | - Andrey V Sybachin
- Department of Chemistry; MV Lomonosov Moscow State University; Moscow Russia
| | - Anna A Efimova
- Department of Chemistry; MV Lomonosov Moscow State University; Moscow Russia
| | - Viktor N Orlov
- Research Institute of Physico-Chemical Biology; MV Lomonosov Moscow State University; Moscow Russia
| | - Dmitry V Pergushov
- Department of Chemistry; MV Lomonosov Moscow State University; Moscow Russia
| | - Holger Schmalz
- Makromolekulare Chemie II; Universität Bayreuth; Bayreuth Germany
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Salt-induced reentrant stability of polyion-decorated particles with tunable surface charge density. Colloids Surf B Biointerfaces 2016; 137:109-20. [DOI: 10.1016/j.colsurfb.2015.06.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 06/03/2015] [Accepted: 06/04/2015] [Indexed: 01/17/2023]
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7
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Paiva D, Brezesinski G, Pereira MDC, Rocha S. Langmuir monolayers of monocationic lipid mixed with cholesterol or fluorocholesterol: DNA adsorption studies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:1920-1925. [PMID: 23356402 DOI: 10.1021/la304012e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Monolayers of the cationic lipid DOTAP (1,2-dioleoyl-3-trimethylammonium-propane) and cholesterol or heptafluorocholesterol were prepared, and their interaction with DNA was characterized. The mixture of DOTAP with each of the sterols at 1:1 molar ratios leads to monolayers in a liquid expanded state, similarly to that of DOTAP alone. The area per molecule of the mixtures was smaller than that expected according to the additivity rule applicable if the two components are either completely miscible or immiscible within the monolayer. The observed negative deviation from the additivity indicates the existence of additional attractive interactions between the components. The surface potential of DOTAP monolayer is positive (+560 mV). It decreases only slightly after the addition of cholesterol (+540 mV) but drastically after the addition of heptafluorocholesterol (+20 mV) in the 1:1 mixtures at a surface pressure of 35 mN/m. This difference is attributed to the negative dipole moment of the fluorinated component. The adsorption of DNA is similar for both systems, which supports the possibility of using fluorinated cholesterol as helper lipid in DNA transfection vectors.
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Affiliation(s)
- Diana Paiva
- LEPAE, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
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8
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Sabín J, Vázquez-Vázquez C, Prieto G, Bordi F, Sarmiento F. Double charge inversion in polyethylenimine-decorated liposomes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:10534-10542. [PMID: 22712613 DOI: 10.1021/la3019259] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The study of the interaction of a cationic polymer as PEI with phospholipids membranes is of special relevance for gene therapy because the PEI is a potential nonviral vector to transfer DNA in living cells. We used light scattering, zeta potential, and electron transmission microscopy to characterize the interaction between DMPG and DOPC liposomes with PEI as a function of the charge molar ratio, pH, temperature, initial size of the liposomes, and headgroup of the lipids. Unexpectedly, a double charge inversion and two different ranges of PEI-liposome concentrations where an aggregation occurs were found, when the proper pH and initial size of the liposomes were chosen. The interaction is analyzed in terms of the interaction potential proposed by Velegol and Thwar for colloidal particles with a nonuniform surface charge distribution. Results show a remarkable dependence of the stability on pH and the initial size of the liposomes, which explains the low reproducibility of the experiments if no special care is taken in preparing the samples. Comparatively small changes in the pH or in the liposomes size lead to a completely different stability behavior.
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Affiliation(s)
- Juan Sabín
- Biophysics & Interfaces Group, Department of Applied Physics, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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Chronopoulou L, Cutonilli A, Cametti C, Dentini M, Palocci C. PLGA-based nanoparticles: effect of chitosan in the aggregate stabilization. A dielectric relaxation spectroscopy study. Colloids Surf B Biointerfaces 2012; 97:117-23. [PMID: 22609591 DOI: 10.1016/j.colsurfb.2012.04.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 04/10/2012] [Accepted: 04/12/2012] [Indexed: 11/18/2022]
Abstract
Chitosan-modified polylactic-co-glycolic acid (PLGA) nanoparticles with average diameter of 200 nm in PBS buffer solution have been investigated by means of dielectric relaxation spectroscopy measurements in the frequency range (1 MHz-2 GHz) where interfacial polarizations occur. PLGA-based nanoparticles offer remarkable advantages in different biotechnological fields, such as their biocompatibility, easiness of administration and rather complete biodegradation. However, despite the use of these drug delivery systems is increasing, little is known about the basic process involved in the formation of complexes and in the subsequent release kinetics. In the present work, we have characterized the colloidal behavior of PLGA-based nanoparticles in the presence of oppositely charged chitosan polyelectrolyte by means of dynamic light scattering, electrophoretic mobility and radiowave dielectric relaxation measurements. In particular, we have emphasized how the presence of a coating layer at the nanoparticle surface could exert a marked slowing-down in the drug release. The consequence of this finding is briefly discussed at the light of some biological implications.
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Affiliation(s)
- L Chronopoulou
- Department of Chemistry, University of Rome La Sapienza, Rome, Italy
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Truzzolillo D, Bordi F, Sciortino F, Sennato S. Interaction between like-charged polyelectrolyte-colloid complexes in electrolyte solutions: A Monte Carlo simulation study in the Debye–Hückel approximation. J Chem Phys 2010; 133:024901. [DOI: 10.1063/1.3459125] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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11
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Sikor M, Sabin J, Keyvanloo A, Schneider MF, Thewalt JL, Bailey AE, Frisken BJ. Interaction of a charged polymer with zwitterionic lipid vesicles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:4095-4102. [PMID: 20163081 DOI: 10.1021/la902831n] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The interaction between polyethylenimine (PEI) and phospholipid bilayers plays an important role in several biophysical applications such as DNA transfection of target cells. Despite considerable investigation into the nature of the interaction between PEI and phospholipid bilayers, the physical process remains poorly understood. In this paper, we study the impact of PEI on 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) vesicles as a function of salt concentration using several techniques including dynamic (DLS) and static (SLS) light scattering, differential scanning calorimetry (DSC), and nuclear magnetic resonance (NMR). At low salt concentration, vesicles aggregate, leading to the formation of stable clusters whose final size depends on the PEI concentration. At high salt concentration the system does not aggregate; DSC and NMR data reveal that the PEI penetrates into the bilayer, and SLS measurements are consistent with PEI crossing the bilayer. The transfectional ability of PEI is discussed in terms of these results.
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Affiliation(s)
- Martin Sikor
- Institut für Physik, Universität Augsburg, 86159 Augsburg, Germany
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12
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Popa I, Trulsson M, Papastavrou G, Borkovec M, Jönsson B. Long-ranged attractive forces induced by adsorbed dendrimers: direct force measurements and computer simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:12435-12438. [PMID: 19799402 DOI: 10.1021/la902617x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Interaction forces between charged interfaces in the presence of oppositely charged dendrimers are studied by experiment and simulation. The experiments involve direct force measurements with an atomic force microscope (AFM) between two negatively charged colloidal particles in the presence of adsorbed, positively charged globular dendrimers. The simulations are carried out by treating the macroions explicitly, while the small salt ions are treated implicitly through the Debye-Huckel approximation. The system undergoes overcharging, and at the isoelectric point long-ranged attractive electrostatic forces are present. The range of the attraction is on the order of half the Debye length at high salt concentration, but it becomes smaller at low salt concentration. Away from the isoelectric point, repulsive electrostatic forces are observed due to diffuse layer overlap. A semiquantitative agreement between experiment and simulation is obtained, despite the fact that the simple theoretical model does not involve any adjustable parameters. This study provides for the first time detailed comparison between experimental and simulation data of interaction forces between colloidal particles in the presence of multivalent macroions and monovalent salt ions.
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Affiliation(s)
- Ionel Popa
- Department of Inorganic, Analytical, and Applied Chemistry, University of Geneva, 30 Quai E. Ansermet, 1211 Geneva, Switzerland
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Bordi F, Sennato S, Truzzolillo D. Polyelectrolyte-induced aggregation of liposomes: a new cluster phase with interesting applications. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:203102. [PMID: 21825508 DOI: 10.1088/0953-8984/21/20/203102] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Different charged colloidal particles have been shown to be able to self-assemble, when mixed in an aqueous solvent with oppositely charged linear polyelectrolytes, forming long-lived finite-size mesoscopic aggregates. On increasing the polyelectrolyte content, with the progressive reduction of the net charge of the primary polyelectrolyte-decorated particles, larger and larger clusters are observed. Close to the isoelectric point, where the charge of the adsorbed polyelectrolytes neutralizes the original charge of the particles' surface, the aggregates reach their maximum size, while beyond this point any further increase of the polyelectrolyte-particle charge ratio causes the formation of aggregates whose size is progressively reduced. This re-entrant condensation behavior is accompanied by a significant overcharging. Overcharging, or charge inversion, occurs when more polyelectrolyte chains adsorb on a particle than are needed to neutralize its original charge so that, eventually, the sign of the net charge of the polymer-decorated particle is inverted. The stability of the finite-size long-lived clusters that this aggregation process yields results from a fine balance between long-range repulsive and short-range attractive interactions, both of electrostatic nature. For the latter, besides the ubiquitous dispersion forces, whose supply becomes relevant only at high ionic strength, the main contribution appears due to the non-uniform correlated distribution of the charge on the surface of the polyelectrolyte-decorated particles ('charge-patch' attraction). The interesting phenomenology shown by these system has a high potential for biotechnological applications, particularly when the primary colloidal particles are bio-compatible lipid vesicles. Possible applications of these systems as multi-compartment vectors for the simultaneous intra-cellular delivery of different pharmacologically active substances will be briefly discussed.
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Affiliation(s)
- F Bordi
- Dipartimento di Fisica, Università di Roma 'La Sapienza', Piazzale Aldo Moro 5, I-00185 Rome, Italy. CRS CNR-INFM 'SOFT', Università di Roma 'La Sapienza', Piazzale Aldo Moro 5, I-00185-Rome, Italy
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