1
|
Casula L, Elena Giacomazzo G, Conti L, Fornasier M, Manca B, Schlich M, Sinico C, Rheinberger T, Wurm FR, Giorgi C, Murgia S. Polyphosphoester-stabilized cubosomes encapsulating a Ru(II) complex for the photodynamic treatment of lung adenocarcinoma. J Colloid Interface Sci 2024; 670:234-245. [PMID: 38761576 DOI: 10.1016/j.jcis.2024.05.088] [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: 02/13/2024] [Revised: 05/08/2024] [Accepted: 05/14/2024] [Indexed: 05/20/2024]
Abstract
The clinical translation of photosensitizers based on ruthenium(II) polypyridyl complexes (RPCs) in photodynamic therapy of cancer faces several challenges. To address these limitations, we conducted an investigation to assess the potential of a cubosome formulation stabilized in water against coalescence utilizing a polyphosphoester analog of Pluronic F127 as a stabilizer and loaded with newly synthesized RPC-based photosensitizer [Ru(dppn)2(bpy-morph)](PF6)2 (bpy-morph = 2,2'-bipyridine-4,4'-diylbis(morpholinomethanone)), PS-Ru. The photophysical characterization of PS-Ru revealed its robust capacity to induce the formation of singlet oxygen (1O2). Furthermore, the physicochemical analysis of the PS-Ru-loaded cubosomes dispersion demonstrated that the encapsulation of the photosensitizer within the nanoparticles did not disrupt the three-dimensional arrangement of the lipid bilayer. The biological tests showed that PS-Ru-loaded cubosomes exhibited significant phototoxic activity when exposed to the light source, in stark contrast to empty cubosomes and to the same formulation without irradiation. This promising outcome suggests the potential of the formulation in overcoming the drawbacks associated with the clinical use of RPCs in photodynamic therapy for anticancer treatments.
Collapse
Affiliation(s)
- Luca Casula
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, S.P. 8 Km 0.700, 09042 Monserrato, CA, Italy
| | - Gina Elena Giacomazzo
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy
| | - Luca Conti
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy
| | - Marco Fornasier
- Department of Chemistry, Lund University, SE-22100 Lund, Sweden; CSGI, Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Sesto Fiorentino, FI, Italy
| | - Benedetto Manca
- Department of Mathematics and Computer Science, University of Cagliari, via Ospedale 72, 09124 Cagliari, CA, Italy
| | - Michele Schlich
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, S.P. 8 Km 0.700, 09042 Monserrato, CA, Italy
| | - Chiara Sinico
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, S.P. 8 Km 0.700, 09042 Monserrato, CA, Italy
| | - Timo Rheinberger
- Sustainable Polymer Chemistry (SPC), Department of Molecules and Materials, MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, P.O. Box 217, Enschede 7500 AE, Netherlands
| | - Frederik R Wurm
- Sustainable Polymer Chemistry (SPC), Department of Molecules and Materials, MESA+ Institute for Nanotechnology, Faculty of Science and Technology, University of Twente, P.O. Box 217, Enschede 7500 AE, Netherlands
| | - Claudia Giorgi
- Department of Chemistry "Ugo Schiff", University of Florence, via della Lastruccia 3, 50019 Sesto Fiorentino, FI, Italy
| | - Sergio Murgia
- Department of Life and Environmental Sciences, University of Cagliari, Cittadella Universitaria Monserrato, S.P. 8 Km 0.700, 09042 Monserrato, CA, Italy; CSGI, Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase, 50019 Sesto Fiorentino, FI, Italy.
| |
Collapse
|
2
|
Chen N, Wu S, Pan B, Yang Z, Pan B. Engineering Nano-Au-Based Sensor Arrays for Identification of Multiple Ni(II) Complexes in Water Samples. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023. [PMID: 37335829 DOI: 10.1021/acs.est.3c02273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Advanced techniques for nickel (Ni(II)) removal from polluted waters have long been desired but challenged by the diversity of Ni(II) species (most in the form of complexes) which could not be readily discriminated by the traditional analytical protocols. Herein, a colorimetric sensor array is developed to address the above issue based on the shift of the UV-vis spectra of gold nanoparticles (Au NPs) after interaction with Ni(II) species. The sensor array is composed of three Au NP receptors modified by N-acetyl-l-cysteine (NAC), tributylhexadecylphosphonium bromide (THPB), and the mixture of 3-mercapto-1-propanesulfonic acid and adenosine monophosphate (MPS/AMP), to exhibit possible coordination, electrostatic attraction, and hydrophobic interaction toward different Ni(II) species. Twelve classical Ni(II) species were selected as targets to systematically demonstrate the applicability of the sensor array under various conditions. Multiple interactions with Ni(II) species were evidenced to trigger the diverse Au NP aggregation behaviors and subsequently produce a distinct colorimetric response toward each Ni(II) species. With the assistance of multivariate analysis, the Ni(II) species, either as the sole compound or as mixtures, can be unambiguously discriminated with high selectivity in simulated and real water samples. Moreover, the sensor array is very sensitive with the detection limit in the range of 4.2 to 10.5 μM for the target Ni(II) species. Principal component analysis signifies that coordination dominates the response of the sensor array toward different Ni(II) species. The accurate Ni(II) speciation provided by the sensor array is believed to assist the rational design of specific protocols for water decontamination and to shed new light on the development of convenient discrimination methods for other toxic metals of concern.
Collapse
Affiliation(s)
- Ningyi Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shuang Wu
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Bingjun Pan
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Zhichao Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Bingcai Pan
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
- Research Center for Environmental Nanotechnology (ReCENT), Nanjing University, Nanjing 210023, China
| |
Collapse
|
3
|
Caselli L, Mendozza M, Muzzi B, Toti A, Montis C, Mello T, Di Cesare Mannelli L, Ghelardini C, Sangregorio C, Berti D. Lipid Cubic Mesophases Combined with Superparamagnetic Iron Oxide Nanoparticles: A Hybrid Multifunctional Platform with Tunable Magnetic Properties for Nanomedical Applications. Int J Mol Sci 2021; 22:9268. [PMID: 34502176 PMCID: PMC8430948 DOI: 10.3390/ijms22179268] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/21/2021] [Accepted: 08/23/2021] [Indexed: 12/29/2022] Open
Abstract
Hybrid materials composed of superparamagnetic iron oxide nanoparticles (SPIONs) and lipid self-assemblies possess considerable applicative potential in the biomedical field, specifically, for drug/nutrient delivery. Recently, we showed that SPIONs-doped lipid cubic liquid crystals undergo a cubic-to-hexagonal phase transition under the action of temperature or of an alternating magnetic field (AMF). This transition triggers the release of drugs embedded in the lipid scaffold or in the water channels. In this contribution, we address this phenomenon in depth, to fully elucidate the structural details and optimize the design of hybrid multifunctional carriers for drug delivery. Combining small-angle X-ray scattering (SAXS) with a magnetic characterization, we find that, in bulk lipid cubic phases, the cubic-to-hexagonal transition determines the magnetic response of SPIONs. We then extend the investigation from bulk liquid-crystalline phases to colloidal dispersions, i.e., to lipid/SPIONs nanoparticles with cubic internal structure ("magnetocubosomes"). Through Synchrotron SAXS, we monitor the structural response of magnetocubosomes while exposed to an AMF: the magnetic energy, converted into heat by SPIONs, activates the cubic-to-hexagonal transition, and can thus be used as a remote stimulus to spike drug release "on-demand". In addition, we show that the AMF-induced phase transition in magnetocubosomes steers the realignment of SPIONs into linear string assemblies and connect this effect with the change in their magnetic properties, observed at the bulk level. Finally, we assess the internalization ability and cytotoxicity of magnetocubosomes in vitro on HT29 adenocarcinoma cancer cells, in order to test the applicability of these smart carriers in drug delivery applications.
Collapse
Affiliation(s)
- Lucrezia Caselli
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Florence, Italy
| | - Marco Mendozza
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Florence, Italy
| | - Beatrice Muzzi
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, 1240, I-53100 Siena, Italy
- ICCOM-CNR, I-50019 Sesto Fiorentino, Florence, Italy
- INSTM, I-50019 Sesto Fiorentino, Florence, Italy
| | - Alessandra Toti
- Department of Neuroscience, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, 50139 Florence, Italy; (A.T.); (L.D.C.M.); (C.G.)
| | - Costanza Montis
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Florence, Italy
| | - Tommaso Mello
- Department of Clinical and Experimental Biomedical Sciences “Mario Serio”, Gastroenterology Unit, University of Florence, 50139 Florence, Italy;
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, 50139 Florence, Italy; (A.T.); (L.D.C.M.); (C.G.)
| | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health-Neurofarba-Section of Pharmacology and Toxicology, University of Florence, 50139 Florence, Italy; (A.T.); (L.D.C.M.); (C.G.)
| | - Claudio Sangregorio
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- ICCOM-CNR, I-50019 Sesto Fiorentino, Florence, Italy
- INSTM, I-50019 Sesto Fiorentino, Florence, Italy
| | - Debora Berti
- Department of Chemistry, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Florence, Italy; (L.C.); (M.M.); (B.M.); (C.M.); (C.S.)
- Consorzio Sistemi a Grande Interfase, Department of Chemistry, University of Florence, 50019 Sesto Fiorentino, Florence, Italy
| |
Collapse
|
4
|
Murgia S, Biffi S, Fornasier M, Lippolis V, Picci G, Caltagirone C. Bioimaging Applications of Non-Lamellar Liquid Crystalline Nanoparticles. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2021; 21:2742-2759. [PMID: 33653441 DOI: 10.1166/jnn.2021.19064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Self-assembling processes of amphiphilic lipids in water give rise to complex architectures known as lyotropic liquid crystalline (LLC) phases. Particularly, bicontinuous cubic and hexagonal LLC phases can be dispersed in water forming colloidal nanoparticles respectively known as cubosomes and hexosomes. These non-lamellar LLC dispersions are of particular interest for pharmaceutical and biomedical applications as they are potentially non-toxic, chemically stable, and biocompatible, also allowing encapsulation of large amounts of drugs. Furthermore, conjugation of specific moieties enables their targeting, increasing therapeutic efficacies and reducing side effects by avoiding exposure of healthy tissues. In addition, as they can be easy loaded or functionalized with both hydrophobic and hydrophilic imaging probes, cubosomes and hexosomes can be used for the engineering of multifunctional/theranostic nanoplatforms. This review outlines recent advances in the applications of cubosomes and hexosomes for in vitro and in vivo bioimaging.
Collapse
Affiliation(s)
- Sergio Murgia
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, s.s. 554 bivio Sestu, I-09042 Monserrato (CA), Italy
| | - Stefania Biffi
- Institute for Maternal and Child Health, Istituto di Ricovero e Cura a Carattere Scientifico Bo Garofolo, Trieste, 34137, Italy
| | - Marco Fornasier
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, s.s. 554 bivio Sestu, I-09042 Monserrato (CA), Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, s.s. 554 bivio Sestu, I-09042 Monserrato (CA), Italy
| | - Giacomo Picci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, s.s. 554 bivio Sestu, I-09042 Monserrato (CA), Italy
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cittadella Universitaria, s.s. 554 bivio Sestu, I-09042 Monserrato (CA), Italy
| |
Collapse
|
5
|
Carvalho PM, Makowski M, Domingues MM, Martins IC, Santos NC. Lipid membrane-based therapeutics and diagnostics. Arch Biochem Biophys 2021; 704:108858. [PMID: 33798534 DOI: 10.1016/j.abb.2021.108858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 12/29/2022]
Abstract
Success rates in drug discovery are extremely low, and the imbalance between new drugs entering clinical research and their approval is steadily widening. Among the causes of the failure of new therapeutic agents are the lack of safety and insufficient efficacy. On the other hand, timely disease diagnosis may enable an early management of the disease, generally leading to better and less costly outcomes. Several strategies have been explored to overcome the barriers for drug development and facilitate diagnosis. Using lipid membranes as platforms for drug delivery or as biosensors are promising strategies, due to their biocompatibility and unique physicochemical properties. We examine some of the lipid membrane-based strategies for drug delivery and diagnostics, including their advantages and shortcomings. Regarding synthetic lipid membrane-based strategies for drug delivery, liposomes are the archetypic example of a successful approach, already with a long period of well-succeeded clinical application. The use of lipid membrane-based structures from biological sources as drug carriers, currently under clinical evaluation, is also discussed. These biomimetic strategies can enhance the in vivo lifetime of drug and delivery system by avoiding fast clearance, consequently increasing their therapeutic window. The strategies under development using lipid membranes for diagnostic purposes are also reviewed.
Collapse
Affiliation(s)
- Patrícia M Carvalho
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Marcin Makowski
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Marco M Domingues
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Ivo C Martins
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisbon, Portugal
| | - Nuno C Santos
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, 1649-028, Lisbon, Portugal.
| |
Collapse
|
6
|
Chan RCT, Chan CTL, Ma C, Gu KY, Xie HX, Wong AKW, Xiong QW, Wang ML, Kwok WM. Long living excited state of protonated adenosine unveiled by ultrafast fluorescence spectroscopy and density functional theoretical study. Phys Chem Chem Phys 2021; 23:6472-6480. [PMID: 33729247 DOI: 10.1039/d0cp06439d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adenosine (Ado) possesses ultrafast nonradiative dynamics accounting for its remarkably high photostability. The deactivation dynamics of Ado after protonation in an aqueous solution remains an elusive issue. Herein we report an investigation of the excited state dynamics of protonated Ado (AdoH+) performed using ultrafast time-resolved fluorescence spectroscopy combined with density functional theoretical calculation. The result obtained from comparison of conformers with protonation at different sites revealed that the syn-conformer with protonation occurring at the N3 position (syn-N3) is the predominant form of AdoH+ in the ground state, similar to that of Ado. In contrast, the fluorescence of AdoH+ with maximum intensity at 385 nm, significantly red-shifted from that of Ado, displaying decay dynamics composed of an ultrafast component with the lifetime of ∼0.5 ps and a slower one of ∼2.9 ns. The former is because of the decay of the syn-N3 conformer, similar to that reported for AdoH+ under the gas phase condition. The latter is due to the syn-N1 conformer formed via ultrafast proton transfer of the syn-N3. The excited state of syn-N1 has a peculiar nonplanar conformation over the purine molecule, which is responsible for the substantial Stokes shift showed in the fluorescence spectrum and correlates with a large energy barrier for nonradiative decay likely involving a reversed proton transfer. This study demonstrates the importance of protonation and solvent environment in altering dramatically the excited states of Ado, providing insight for better understanding nonradiative dynamics of both the monomeric bases and the oligomeric or polymeric DNAs.
Collapse
Affiliation(s)
- Ruth Chau-Ting Chan
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, Guangdong, P. R. China.
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Recent advances of non-lamellar lyotropic liquid crystalline nanoparticles in nanomedicine. Curr Opin Colloid Interface Sci 2020. [DOI: 10.1016/j.cocis.2020.03.006] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
8
|
Jenni S, Picci G, Fornasier M, Mamusa M, Schmidt J, Talmon Y, Sour A, Heitz V, Murgia S, Caltagirone C. Multifunctional cubic liquid crystalline nanoparticles for chemo- and photodynamic synergistic cancer therapy. Photochem Photobiol Sci 2020; 19:674-680. [PMID: 32314755 DOI: 10.1039/c9pp00449a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
With the aim of engineering multifunctional nanoparticles useful for cancer therapy, a diketopyrrolopyrrole-porphyrin based photosensitizer was here conjugated to a block copolymer (Pluronic F108), and used to stabilize in water lipidic cubic liquid crystalline nanoparticles (cubosomes), also loaded with the antineoplastic agent docetaxel. The physicochemical characterization by SAXS, DLS, and cryo-TEM demonstrated that the formulation consisted of cubosomes, about 150 nm in size, possessing a bicontinuous cubic structure (space group Pn3m). The cellular imaging experiments proved that these nanoparticles localized in lysosomes and mitochondria, while cytotoxicity tests evidenced a slight but significant synergistic effect which, after irradiation, increased the toxicity induced by docetaxel alone, allowing further reduction of cell viability.
Collapse
Affiliation(s)
- Sébastien Jenni
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels, Institut de Chimie de Strasbourg, CNRS/UMR 7177, Université de Strasbourg, 4, rue Blaise Pascal, 67000, Strasbourg, France
| | - Giacomo Picci
- Department of Chemical and Geological Sciences and CSGI, University of Cagliari, s.s. 554 bivio Sestu, 09042, Monserrato, CA, Italy
| | - Marco Fornasier
- Department of Chemical and Geological Sciences and CSGI, University of Cagliari, s.s. 554 bivio Sestu, 09042, Monserrato, CA, Italy
| | - Marianna Mamusa
- CSGI, Department of Chemistry Ugo Shiff, University of Florence, 50019, Sesto Fiorentino, FI, Italy
| | - Judith Schmidt
- Department of Chemical Engineering, Technion - Israel Institute of Technology, 3200003, Haifa, Israel
| | - Yeshayahu Talmon
- Department of Chemical Engineering, Technion - Israel Institute of Technology, 3200003, Haifa, Israel
| | - Angélique Sour
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels, Institut de Chimie de Strasbourg, CNRS/UMR 7177, Université de Strasbourg, 4, rue Blaise Pascal, 67000, Strasbourg, France
| | - Valérie Heitz
- Laboratoire de Synthèse des Assemblages Moléculaires Multifonctionnels, Institut de Chimie de Strasbourg, CNRS/UMR 7177, Université de Strasbourg, 4, rue Blaise Pascal, 67000, Strasbourg, France.
| | - Sergio Murgia
- Department of Chemical and Geological Sciences and CSGI, University of Cagliari, s.s. 554 bivio Sestu, 09042, Monserrato, CA, Italy
| | - Claudia Caltagirone
- Department of Chemical and Geological Sciences and CSGI, University of Cagliari, s.s. 554 bivio Sestu, 09042, Monserrato, CA, Italy
| |
Collapse
|
9
|
Lampis S, Carboni M, Steri D, Murgia S, Monduzzi M. Lipid based liquid-crystalline stabilized formulations for the sustained release of bioactive hydrophilic molecules. Colloids Surf B Biointerfaces 2018; 168:35-42. [DOI: 10.1016/j.colsurfb.2018.03.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 02/25/2018] [Accepted: 03/01/2018] [Indexed: 10/17/2022]
|
10
|
Mendozza M, Montis C, Caselli L, Wolf M, Baglioni P, Berti D. On the thermotropic and magnetotropic phase behavior of lipid liquid crystals containing magnetic nanoparticles. NANOSCALE 2018; 10:3480-3488. [PMID: 29404545 DOI: 10.1039/c7nr08478a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The inclusion of superparamagnetic iron oxide nanoparticles (SPIONs) in lipid mesophases is a promising strategy for drug-delivery applications, combining the innate biocompatibility of lipid architectures with SPIONs' response to external magnetic fields. Moreover, the organization of SPIONs within the lipid scaffold can lead to locally enhanced SPIONs concentration and improved magnetic response, which is key to overcome the current limitations of hyperthermic treatments. Here we present a Small-Angle X-ray Scattering (SAXS) structural investigation of the thermotropic and magnetotropic behavior of glyceryl monooleate (GMO)/water mesophases, loaded with hydrophobic SPIONs. We prove that even very low amounts of SPIONs deeply alter the phase behavior and thermotropic properties of the mesophases, promoting a cubic to hexagonal phase transition, which is similarly induced upon application of an Alternating Magnetic Field (AMF). Moreover, in the hexagonal phase SPIONs spontaneously self-assemble within the lipid scaffold into a linear supraparticle. This phase behavior is interpreted in the framework of the Helfrich's theory, which shows that SPIONs affect the mesophase both from a viscoelastic and from a structural standpoint. Finally, the dispersion of these cubic phases into stable magnetic colloidal particles, which retain their liquid crystalline internal structure, is addressed as a promising route towards magneto-responsive drug-delivery systems (DDS).
Collapse
Affiliation(s)
- Marco Mendozza
- Department of chemistry and CSGI, University of Florence, Via della Lastruccia 3, Sesto Fiorentino, 50019 Florence, Italy.
| | | | | | | | | | | |
Collapse
|
11
|
Roy B, Hazra P. Dynamics of different steps of the photopyrolytic cycle of an eminent anticancer drug topotecan inside biocompatible lyotropic liquid crystalline systems. RSC Adv 2017. [DOI: 10.1039/c6ra25200a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Dynamics of different steps of photopyrolytic processes of an eminent anticancer drug topotecan have been investigated inside different lyotropic liquid crystalline systems.
Collapse
Affiliation(s)
- Bibhisan Roy
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Pune
- India
| | - Partha Hazra
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Pune
- India
| |
Collapse
|
12
|
Wu RR, Rodgers MT. Mechanisms and energetics for N-glycosidic bond cleavage of protonated adenine nucleosides: N3 protonation induces base rotation and enhances N-glycosidic bond stability. Phys Chem Chem Phys 2016; 18:16021-32. [DOI: 10.1039/c6cp01445c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
N3 protonation induces base rotation and stabilizes the syn orientation of the adenine nucleobase of [dAdo+H]+ and [Ado+H]+via formation of a strong intramolecular N3H+⋯O5′ hydrogen-bonding interaction, which in turn influences the mechanisms and energetics for N-glycosidic bond cleavage.
Collapse
Affiliation(s)
- R. R. Wu
- Department of Chemistry
- Wayne State University
- Detroit
- USA
| | - M. T. Rodgers
- Department of Chemistry
- Wayne State University
- Detroit
- USA
| |
Collapse
|
13
|
Bu M, Tang J, Wei Y, Sun Y, Wang X, Wu L, Liu H. Enhanced bioavailability of nerve growth factor with phytantriol lipid-based crystalline nanoparticles in cochlea. Int J Nanomedicine 2015; 10:6879-89. [PMID: 26604754 PMCID: PMC4639561 DOI: 10.2147/ijn.s82944] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Purpose Supplementation of exogenous nerve growth factor (NGF) into the cochlea of deafened animals rescues spiral ganglion cells from degeneration. However, a safe and potent delivery of therapeutic proteins, such as NGF, to spiral ganglion cells remains one of the greatest challenges. This study presents the development of self-assembled cubic lipid-based crystalline nanoparticles to enhance inner ear bioavailability of bioactive NGF via a round window membrane route. Methods A novel nanocarrier-entrapped NGF was developed based on phytantriol by a liquid precursor dilution, with Pluronic® F127 and propylene glycol as the surfactant and solubilizer, respectively. Upon dilution of the liquid lipid precursors, monodispersed submicron-sized particles with a slight negative charge formed spontaneously. Results Biological activity of entrapped NGF was assessed using pheochromocytoma cells with NGF-loaded reservoirs to induce significant neuronal outgrowth, similar to that seen in free NGF-treated controls. Finally, a 3.28-fold increase in inner ear bioavailability was observed after administration of phytantriol lipid-based crystalline nanoparticles as compared to free drug, contributing to an enhanced drug permeability of the round window membrane. Conclusion Data presented here demonstrate the potential of lipid-based crystalline nanoparticles to improve the outcomes of patients bearing cochlear implants.
Collapse
Affiliation(s)
- Meng Bu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China ; Department of Pharmacy, the Second Affiliated Hospital, Harbin Medical University, Harbin, People's Republic of China
| | - Jingling Tang
- School of Pharmacy, Harbin Medical University, Harbin, People's Republic of China
| | - Yinghui Wei
- College of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou, People's Republic of China
| | - Yanhui Sun
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Xinyu Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| | - Linhua Wu
- Department of Pharmacy, the Second Affiliated Hospital, Harbin Medical University, Harbin, People's Republic of China
| | - Hongzhuo Liu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, People's Republic of China
| |
Collapse
|
14
|
Murgia S, Falchi AM, Meli V, Schillén K, Lippolis V, Monduzzi M, Rosa A, Schmidt J, Talmon Y, Bizzarri R, Caltagirone C. Cubosome formulations stabilized by a dansyl-conjugated block copolymer for possible nanomedicine applications. Colloids Surf B Biointerfaces 2015; 129:87-94. [PMID: 25829131 DOI: 10.1016/j.colsurfb.2015.03.025] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 01/23/2015] [Accepted: 03/09/2015] [Indexed: 12/31/2022]
Abstract
We present here an innovative, fluorescent, monoolein-based cubosome dispersion. Rather than embedded within the monoolein palisade, the fluorescent imaging agent, namely dansyl, was conjugated to the terminal ethylene oxide moieties of the block copolymer Pluronic F108. We discuss the physicochemical and photophysical properties of this fluorescent Pluronic and of a cubosome formulation stabilized by a mixture of dansyl-conjugated and non-conjugated Pluronic, also including an anticancer drug (quercetin). Furthermore, we performed biocompatibility tests against HeLa cells to assess internalization and cytotoxicity features of this nanoparticles aqueous dispersion. Cryo-TEM, SAXS, and DLS analysis, proved the bicontinuous cubic inner nanostructure and the morphology of this fluorescent cubosome dispersion, while photophysical measurements and biocompatibility results basically validate their potential use for theranostic nanomedicine applications.
Collapse
Affiliation(s)
- Sergio Murgia
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Angela Maria Falchi
- Dipartimento di Scienze Biomediche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA) , Italy.
| | - Valeria Meli
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Karin Schillén
- Division of Physical Chemistry, Department of Chemistry, Center for Chemistry and Chemical Engineering, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Maura Monduzzi
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| | - Antonella Rosa
- Dipartimento di Scienze Biomediche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA) , Italy.
| | - Judith Schmidt
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.
| | - Yeshayahu Talmon
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Haifa 32000, Israel.
| | - Ranieri Bizzarri
- Istituto di Biofisica, CNR, U.O. Pisa, Via G Moruzzi 1, 56124 Pisa, Italy.
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, S.S. 554 Bivio Sestu, I-09042 Monserrato (CA), Italy.
| |
Collapse
|
15
|
Wu RR, Yang B, Berden G, Oomens J, Rodgers MT. Gas-Phase Conformations and Energetics of Protonated 2′-Deoxyadenosine and Adenosine: IRMPD Action Spectroscopy and Theoretical Studies. J Phys Chem B 2015; 119:2795-805. [DOI: 10.1021/jp509267k] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- R. R. Wu
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Bo Yang
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - G. Berden
- Radboud University Nijmegen, Institute for Molecules and Materials, FELIX Facility, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
| | - J. Oomens
- Radboud University Nijmegen, Institute for Molecules and Materials, FELIX Facility, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands
- van’t Hoff
Institute for Molecular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - M. T. Rodgers
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| |
Collapse
|
16
|
Falchi AM, Rosa A, Atzeri A, Incani A, Lampis S, Meli V, Caltagirone C, Murgia S. Effects of monoolein-based cubosome formulations on lipid droplets and mitochondria of HeLa cells. Toxicol Res (Camb) 2015. [DOI: 10.1039/c5tx00078e] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Analysis of living cells after staining with organelle-specific dyes shows that monoolein-based cubosome treatment induces accumulation of lipid droplets (green) and mitochondrial (red) hyperpolarization.
Collapse
Affiliation(s)
- Angela Maria Falchi
- Department of Biomedical Sciences
- University of Cagliari
- 09042 Monserrato
- Italy
| | - Antonella Rosa
- Department of Biomedical Sciences
- University of Cagliari
- 09042 Monserrato
- Italy
| | - Angela Atzeri
- Department of Biomedical Sciences
- University of Cagliari
- 09042 Monserrato
- Italy
| | - Alessandra Incani
- Department of Biomedical Sciences
- University of Cagliari
- 09042 Monserrato
- Italy
| | - Sandrina Lampis
- Department of Chemical and Geological Sciences
- University of Cagliari
- 09042 Monserrato
- Italy
| | - Valeria Meli
- Department of Chemical and Geological Sciences
- University of Cagliari
- 09042 Monserrato
- Italy
| | - Claudia Caltagirone
- Department of Chemical and Geological Sciences
- University of Cagliari
- 09042 Monserrato
- Italy
| | - Sergio Murgia
- Department of Chemical and Geological Sciences
- University of Cagliari
- 09042 Monserrato
- Italy
| |
Collapse
|
17
|
Caltagirone C, Arca M, Falchi AM, Lippolis V, Meli V, Monduzzi M, Nylander T, Rosa A, Schmidt J, Talmon Y, Murgia S. Solvatochromic fluorescent BODIPY derivative as imaging agent in camptothecin loaded hexosomes for possible theranostic applications. RSC Adv 2015. [DOI: 10.1039/c5ra01025j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Tumor cell-targeted hexosomes simultaneously loaded with pyrene-modified BODIPY and camptothecin are easily internalized by HeLa cells.
Collapse
|
18
|
Caltagirone C, Falchi AM, Lampis S, Lippolis V, Meli V, Monduzzi M, Prodi L, Schmidt J, Sgarzi M, Talmon Y, Bizzarri R, Murgia S. Cancer-cell-targeted theranostic cubosomes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:6228-36. [PMID: 24815031 DOI: 10.1021/la501332u] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
This work was devoted to the development of a new type of lipid-based (cubosome) theranostic nanoparticle able to simultaneously host camptothecin, a potent anticancer drug, and a squarain-based NIR-emitting fluorescent probe. Furthermore, to confer targeting abilities on these nanoparticles, they were dispersed using mixtures of Pluronic F108 and folate-conjugated Pluronic F108 in appropriate ratios. The physicochemical characterization, performed via SAXS, DLS, and cryo-TEM techniques, proved that aqueous dispersions of such cubosomes can be effectively prepared, while the photophysical characterization demonstrated that these nanoparticles may be used for in vivo imaging purposes. The superior ability of these innovative nanoparticles in targeting cancer cells was emphasized by investigating the lipid droplet alterations induced in HeLa cells upon exposure to targeted and nontargeted cubosomes.
Collapse
Affiliation(s)
- Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche and ‡Dipartimento di Scienze Biomediche, Università di Cagliari , s.s. 554 bivio Sestu, I-09042 Monserrato, CA, Italy
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Sollai G, Murgia S, Secci F, Frongia A, Cerboneschi A, Masala C, Liscia A, Crnjar R, Solari P. A pheromone analogue affects the evaporation rate of (+)-disparlure in Lymantria dispar. PEST MANAGEMENT SCIENCE 2014; 70:674-681. [PMID: 23868283 DOI: 10.1002/ps.3609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 07/08/2013] [Accepted: 07/18/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND The gypsy moth Lymantria dispar L. is a widespread pest that causes economic damage to cork oak forests. Females produce the sex pheromone (+)-(7R,8S)-epoxy-2-methyloctadecane, known as (+)-disparlure [(+)D], for long-distance attraction of conspecific males. A (+)D analogue, 2-decyl-1-oxaspiro[2.2]pentane (OXP-01), neither stimulating nor attractive by itself, causes short-time inhibition of male response in a 1:1 blend with (+)D. The authors investigated whether and how the biological activity of the natural pheromone is affected by OXP-01 on a long-time basis (up to 16 days), also by looking at possible physicochemical reciprocal interactions. RESULTS Blending of (+)D with OXP-01 decreased, under low evaporation rate, the pheromone effectiveness, as assessed by electroantennogram recordings. In male trappings, within the first 24 h, OXP-01 decreased and later enhanced the blend attractiveness, but only under high evaporation rate. Gas chromatography-mass spectroscopy indicates that quantitative retrieval of (+)D from blend cartridges is higher than for pure pheromone, and nuclear magnetic resonance measurements show that OXP-01 produces, possibly by Van der Waals interactions, a bimolecular entity with pheromone causing retention and lengthening of its attractiveness over time. CONCLUSION The biological and physicochemical interactions between (+)D and OXP-01 may provide valuable information for the optimisation of pheromone-based control strategies for gypsy moths.
Collapse
Affiliation(s)
- Giorgia Sollai
- Department of Biomedical Sciences, Section of Physiology, University of Cagliari, Monserrato, Cagliari, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Monduzzi M, Lampis S, Murgia S, Salis A. From self-assembly fundamental knowledge to nanomedicine developments. Adv Colloid Interface Sci 2014; 205:48-67. [PMID: 24182715 DOI: 10.1016/j.cis.2013.10.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 10/08/2013] [Accepted: 10/08/2013] [Indexed: 02/01/2023]
Abstract
This review highlights the key role of NMR techniques in demonstrating the molecular aspects of the self-assembly of surfactant molecules that nowadays constitute the basic knowledge which modern nanoscience relies on. The aim is to provide a tutorial overview. The story of a rigorous scientific approach to understand self-assembly in surfactant systems and biological membranes starts in the early seventies when the progresses of SAXRD and NMR technological facilities allowed to demonstrate the existence of ordered soft matter, and the validity of Tanford approach concerning self-assembly at a molecular level. Particularly, NMR quadrupolar splittings, NMR chemical shift anisotropy, and NMR relaxation of dipolar and quadrupolar nuclei in micellar solutions, microemulsions, and liquid crystals proved the existence of an ordered polar-apolar interface, on the NMR time scale. NMR data, rationalized in terms of the two-step model of relaxation, allowed to quantify the dynamic aspects of the supramolecular aggregates in different soft matter systems. In addition, NMR techniques allowed to obtain important information on counterion binding as well as on size of the aggregate through molecular self-diffusion. Indeed NMR self-diffusion proved without any doubt the existence of bicontinuous microemulsions and bicontinuous cubic liquid crystals, suggested by pioneering and brilliant interpretation of SAXRD investigations. Moreover, NMR self-diffusion played a fundamental role in the understanding of microemulsion and emulsion nanostructures, phase transitions in phase diagrams, and particularly percolation phenomena in microemulsions. Since the nineties, globalization of the knowledge along with many other technical facilities such as electron microscopy, particularly cryo-EM, produced huge progresses in surfactant and colloid science. Actually we refer to nanoscience: bottom up/top down strategies allow to build nanodevices with applications spanning from ICT to food technology. Developments in the applied fields have also been addressed by important progresses in theoretical skills aimed to understand intermolecular forces, and specific ion interactions. Nevertheless, this is still an open question. Our predictive ability has however increased, hence more ambitious targets can be planned. Nanomedicine represents a major challenging field with its main aims: targeted drug delivery, diagnostic, theranostics, tissue engineering, and personalized medicine. Few recent examples will be mentioned. Although the real applications of these systems still need major work, nevertheless new challenges are open, and perspectives based on integrated multidisciplinary approaches would enable both a deeper basic knowledge and the expected advances in biomedical field.
Collapse
Affiliation(s)
- Maura Monduzzi
- Dept. Scienze Chimiche e Geologiche, CNBS & CSGI, University of Cagliari, SS 554 Bivio Sestu, 09042 Monserrato, CA, Italy.
| | - Sandrina Lampis
- Dept. Scienze Chimiche e Geologiche, CNBS & CSGI, University of Cagliari, SS 554 Bivio Sestu, 09042 Monserrato, CA, Italy
| | - Sergio Murgia
- Dept. Scienze Chimiche e Geologiche, CNBS & CSGI, University of Cagliari, SS 554 Bivio Sestu, 09042 Monserrato, CA, Italy
| | - Andrea Salis
- Dept. Scienze Chimiche e Geologiche, CNBS & CSGI, University of Cagliari, SS 554 Bivio Sestu, 09042 Monserrato, CA, Italy
| |
Collapse
|
21
|
Hiwale P, Lampis S, Murgia S, Monduzzi M. Liquid-Crystal Based Formulations for Topical Drug Delivery. J DISPER SCI TECHNOL 2013. [DOI: 10.1080/01932691.2012.738118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
22
|
Cuomo F, Mosca M, Murgia S, Avino P, Ceglie A, Lopez F. Evidence for the role of hydrophobic forces on the interactions of nucleotide-monophosphates with cationic liposomes. J Colloid Interface Sci 2013; 410:146-51. [PMID: 24011561 DOI: 10.1016/j.jcis.2013.08.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 08/01/2013] [Accepted: 08/02/2013] [Indexed: 11/19/2022]
Abstract
In this work, the interaction of nucleotide-monophosphates (NMPs) with unilamellar liposomes made of 1,2-Dioleoyl-3-Trimethylammonium-Propane (DOTAP) and 1,2-Dioleoyl-sn-Glycero-3-Phosphoethanolamine (DOPE) was investigated. Here, we demonstrate how adsorption is affected by the type of nucleotide-monophosphate. Dynamic light scattering (DLS) results revealed, for each NMP, that a distinguishable concentration exists at which a significant growth of the aggregates occurs. Adenosine 5'-monophosphate (AMP) and guanosine 5'-monophosphate (GMP) have shown a higher propensity to induce liposome aggregation process and in particular GMP appears to be the most effective. From ζ-potential experiments we found that liposomes loaded with purine based nucleotides (AMP and GMP) are able to decrease the ζ-potential values to a greater extent in comparison with the pyrimidine based nucleotides thimydine 5'-monophosphate (TMP) and uridine 5'-monophosphate (UMP). Moreover, a careful analysis of nucleotide-liposome interactions revealed that nucleotides have different capacity to induce the formation of nucleotide-liposome complexes, and purine based nucleotides have higher affinities with lipid membranes. On the whole, the data emphasize that the mechanisms driving the interactions between liposomes and NMPs are also influenced by the existence of hydrophobic forces.
Collapse
Affiliation(s)
- Francesca Cuomo
- Dipartimento di Agricoltura, Ambiente Alimenti (DIAAA) and Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI), Università degli studi del Molise, I-86100 Campobasso, Italy
| | | | | | | | | | | |
Collapse
|
23
|
Annese C, D'Accolti L, Fusco C, Mele G, Giorgio G, Colafemmina G, Murgia S, Palazzo G. Oxidation-proof microemulsions: Microstructure and reactivity in the presence of dioxiranes. J Colloid Interface Sci 2013; 408:138-44. [PMID: 23954422 DOI: 10.1016/j.jcis.2013.07.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Revised: 07/17/2013] [Accepted: 07/18/2013] [Indexed: 11/28/2022]
Abstract
Dioxiranes are used as reagents in a myriad of synthetically useful oxidations performed in aqueous medium. To extend such an approach also to substrates that are highly hydrophobic, we propose here the use of microemulsions based on the surfactant hexadecyltrimethylammonium hydrogen sulphate (CTAHS) because of its high stability against peroxide species. In this paper, we examine the dioxirane (isolated or generated in situ) reactivity in different CTAHS microemulsions. Yield and selectivity of the oxidation of β-methylstyrene by dimethyldioxirane (DDO) generate "in situ" and of laurolactam by isolated methyl(trifluorometyl)dioxirane (TFDO) were studied. For each microemulsion, the aggregate size and the localization of the components were determined by a combination of NMR and light scattering techniques. The hydrodynamic radius of the micelles is close to the length of the surfactant and this suggests they are spherical in shape. When acetone (the precursor of DDO) is present in the formulation, it partitions itself between the aqueous bulk and the micellar palisade so that the dioxirane eventually formed is readily available to oxidize substrates secluded in the micelle. Apolar substrates, confined within the micelles, are protected from uncontrolled oxidations, leading to an astonishing high selectivity of oxidation of laurolactam to 12-nitro-lauric acid by TFDO. This opens the way to an easy procedure (performed in water under mild conditions) to synthetize ω-nitroacids.
Collapse
Affiliation(s)
- Cosimo Annese
- Department of Chemistry, University of Bari Aldo Moro, via Orabona 4, 70126 Bari, Italy
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Murgia S, Bonacchi S, Falchi AM, Lampis S, Lippolis V, Meli V, Monduzzi M, Prodi L, Schmidt J, Talmon Y, Caltagirone C. Drug-loaded fluorescent cubosomes: versatile nanoparticles for potential theranostic applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6673-6679. [PMID: 23642193 DOI: 10.1021/la401047a] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this work, monoolein-based cubosomes were doped with two fluorescent probes, namely, fluorescein and dansyl, properly modified with a hydrocarbon chain to increase their encapsulation efficiency within the monoolein palisade. The same nanocarriers were also loaded with quercetin, a hydrophobic molecule with potential anticancer activity. Particularly, the cubosomes doped with the modified fluorescein probe were successfully exploited for single living cell imaging. The physicochemical and photophysical characterizations reported here, along with the well-known ability of cubosomes in hosting molecules with pharmaceutical interest, strongly encourage the use of these innovative fluorescent nanocarriers for theranostic purposes.
Collapse
Affiliation(s)
- Sergio Murgia
- Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Monserrato (CA), Italy.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Carboni M, Falchi AM, Lampis S, Sinico C, Manca ML, Schmidt J, Talmon Y, Murgia S, Monduzzi M. Physicochemical, cytotoxic, and dermal release features of a novel cationic liposome nanocarrier. Adv Healthc Mater 2013. [PMID: 23184424 DOI: 10.1002/adhm.201200302] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A novel cationic liposome nanocarrier, having interesting performance in topical drug delivery, is here presented and evaluated for its features. Two penetration enhancers, namely monoolein and lauroylcholine chloride, are combined to rapidly formulate (15 min) a cationic liposome nanostructure endowed of excellent stability (>6 months) and skin penetration ability, along with low short-term cytotoxicity, as evaluated via the MTT test. Cytotoxicity tests and lipid droplet analysis give a strong indication that monoolein and lauroylcholine synergistically endanger long-term cells viability. The physicochemical features, investigated through SAXS, DLS, and cryo-TEM techniques, reveal that the nanostructure is retained after loading with diclofenac in its acid (hydrophobic) form. The drug release performances are studied using intact newborn pig skin. Analysis of the different skin strata proves that the drug mainly accumulates into the viable epidermis with almost no deposition into the derma. Indeed, the flux of the drug across the skin is exceptionally low, with only 1% release after 24 h. These results validate the use of this novel formulation for topical drug release when the delivery to the systemic circulation should be avoided.
Collapse
Affiliation(s)
- Maura Carboni
- Department of Chemical and Geological Sciences, University of Cagliari, CNBS and CSGI, s.s. 554, bivio Sestu, 09042 Monserrato (CA), Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Cuomo F, Mosca M, Murgia S, Ceglie A, Lopez F. Oligonucleotides and polynucleotides condensation onto liposome surface: effects of the base and of the nucleotide length. Colloids Surf B Biointerfaces 2012; 104:239-44. [PMID: 23337119 DOI: 10.1016/j.colsurfb.2012.12.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 11/27/2012] [Accepted: 12/04/2012] [Indexed: 10/27/2022]
Abstract
The association behavior of different nucleic acids with cationic liposomes has been monitored, in order to find out how the polymer length, the type of base and the charge density affect the lipoplex formation. In particular the associative features displayed by the homopolymer 20-mer of adenine, Oligo (dA), of timine, Oligo (dT), and of guanine, Oligo (dG), were compared to understand the role of the base. The effects of the nucleic acid length and of the charge density were evaluated taking account of the association of the polyadenylic acid and of the DNA onto the liposomes. The results show that the homopolymer Oligo (dG) is able to interact with the cationic liposomes to the same extent as DNA, in spite of the fact that Oligo (dG) is a short polymer made of 20 residues and DNA is a longer and dual strand polymer having a higher charge density.
Collapse
Affiliation(s)
- Francesca Cuomo
- Dipartimento di Agricoltura, Ambiente e Alimenti (DIAAA) and CSGI, Università degli studi del Molise, I-86100 Campobasso, Italy.
| | | | | | | | | |
Collapse
|
27
|
Komisarski M, Osornio YM, Siegel JS, Landau EM. Tailored host-guest lipidic cubic phases: a protocell model exhibiting nucleic acid recognition. Chemistry 2012; 19:1262-7. [PMID: 23239006 DOI: 10.1002/chem.201203372] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Indexed: 11/10/2022]
Abstract
A classical conundrum in origin-of-life studies relates to the nature of the first chemical system: was it a carrier of genetic information or a facilitator of cellular compartmentalization? Here we present a system composed of tailor-made nucleolipids and hydrated monoolein, which assemble at ambient temperatures to form host-guest lipidic cubic phase (LCP) materials that are stable in bulk water and can perform both functions. As such, they may represent a molecular model for a protocell in origin-of-life studies. Nucleolipids within the lipidic material sequester and bind selectively complementary oligonucleotide sequences from solution by virtue of base-pairing; noncomplementary sequences diffuse freely between the LCP material and the bulk aqueous environment. Sequence specific enrichment of nucleic acids within the LCP material demonstrates an effective mechanism for selection of genetic material in these cell-mimetic systems.
Collapse
Affiliation(s)
- Marek Komisarski
- Institute of Organic Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | | | | | | |
Collapse
|
28
|
Angelico R, Losito I, Cuomo F, Ceglie A, Palmisano F. Alkylation of complementary ribonucleotides in nanoreactors. Phys Chem Chem Phys 2012. [PMID: 23184218 DOI: 10.1039/c2cp43383d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aim of the present study was to provide experimental evidence that base pairing, commonly occurring between nucleic bases in more complex supramolecular arrangements, may affect the reaction pathways associated with the alkylation of bases themselves. In pursuit of this aim, dilute aqueous solutions of Cytidine- (CMP) and Guanosine-Mono-Phosphate (GMP) as single reactants or in an equimolar mixture were treated with the electrophilic alkylating agent 1,2-Dodecyl-Epoxide (DE), which was preventively dispersed into micellar solutions prepared with the cationic surfactant hexadecyltrimethylammonium bromide (CTAB). In the early stage of the reaction, CTAB micelles acted as micro-heterogeneous nanoreactors, but as the reaction progressed the systems evolved toward the formation of polydisperse aggregates, whose size and surface-charge properties were monitored as a function of reaction time. From mass spectrometry analyses, it was found that the deamination of cytosine, a side reaction related to the alkylation of the amino group of CMP, was reduced when both the complementary ribonucleotides were present in the same reaction mixture. The involvement of specific sites able to establish C:G interactions (possibly via H-bonding or π-π stacking) could explain the reduced reactivity occurring at the level of some of the nucleophilic centers responsible for molecular recognition.
Collapse
Affiliation(s)
- Ruggero Angelico
- Consorzio per lo sviluppo dei Sistemi a Grande Interfase (CSGI), Firenze (FI), Italy.
| | | | | | | | | |
Collapse
|
29
|
Ariga K, Ito H, Hill JP, Tsukube H. Molecular recognition: from solution science to nano/materials technology. Chem Soc Rev 2012; 41:5800-35. [PMID: 22773130 DOI: 10.1039/c2cs35162e] [Citation(s) in RCA: 332] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the 25 years since its Nobel Prize in chemistry, supramolecular chemistry based on molecular recognition has been paid much attention in scientific and technological fields. Nanotechnology and the related areas seek breakthrough methods of nanofabrication based on rational organization through assembly of constituent molecules. Advanced biochemistry, medical applications, and environmental and energy technologies also depend on the importance of specific interactions between molecules. In those current fields, molecular recognition is now being re-evaluated. In this review, we re-examine current trends in molecular recognition from the viewpoint of the surrounding media, that is (i) the solution phase for development of basic science and molecular design advances; (ii) at nano/materials interfaces for emerging technologies and applications. The first section of this review includes molecular recognition frontiers, receptor design based on combinatorial approaches, organic capsule receptors, metallo-capsule receptors, helical receptors, dendrimer receptors, and the future design of receptor architectures. The following section summarizes topics related to molecular recognition at interfaces including fundamentals of molecular recognition, sensing and detection, structure formation, molecular machines, molecular recognition involving polymers and related materials, and molecular recognition processes in nanostructured materials.
Collapse
Affiliation(s)
- Katsuhiko Ariga
- Japan Science and Technology Agency, Core Research for Evolutional Science and Technology, Go-bancho, Chiyoda-ku, Tokyo 102-0076, Japan
| | | | | | | |
Collapse
|
30
|
Murgia S, Palazzo G, Mamusa M, Lampis S, Monduzzi M. Aerosol-OT in water forms fully-branched cylindrical direct micelles in the presence of the ionic liquid 1-butyl-3-methylimidazolium bromide. Phys Chem Chem Phys 2011; 13:9238-45. [DOI: 10.1039/c1cp20209j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|