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Roy D, Roy B, Naskar B, Bala T. Detailed Study on the Interfacial Interaction between Different Polyoxometalates and Tetronic Block Copolymers Exploring the Langmuir-Blodgett Technique. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:16030-16047. [PMID: 38803109 DOI: 10.1021/acs.langmuir.4c00317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Polyoxometalates (POMs) interact with various biologically relevant entities. A basic understanding of this interaction is very important for various applications in the biological field. In this work, the focus is on the study of the interaction between tetronics and Keggin POMs. T701 and T90R4 are the two tetronics considered here; they have different solubilities in water due to different PPO/PEO ratios. The arrangement of PPO and PEO is also different with respect to the central ethylenediamine groups. Three different Keggin-type POMs, phosphomolybdic acid (PMA), phosphotungstic acid (PTA), and silicotungstic acid (STA), with different charge densities are chosen for an elaborate investigation using Langmuir-Blodgett technique. The observation is analyzed thoroughly, which shows both electrostatic interaction and adsorption of POMs on the PPO blocks of the tetronics due to the chaotropic effect, which is responsible for the binding of POMs (in subphase) with the tetronic monolayer. This interaction results in an expanded yet rigid monolayer for POM-tetronic association on the surface. Surface pressure vs mean molecular area isotherm is the key characterization to reach the conclusion. UV-vis spectroscopy, NMR, ITC, ellipsometric studies, FTIR, and SEM also serve as supportive characterization techniques.
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Affiliation(s)
- Dipali Roy
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, India
| | - Bodhishatwa Roy
- Department of Electronic Science, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, India
| | - Bappaditya Naskar
- Department of Chemistry, Sundarban Hazi Desarat College, Pathankhali 743611, India
| | - Tanushree Bala
- Department of Chemistry, University of Calcutta, 92 A.P.C. Road, Kolkata 700009, India
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2
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Anilkumar A, Dutta Choudhury S. Self-assembly of Reverse Poloxamine Induced by Saccharide Excipients: Insights from Fluorescence. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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3
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Mixed micelles and gels of a hydrophilic poloxamine (Tetronic 1307) and miltefosine: Structural characterization by small-angle neutron scattering and in vitro evaluation for the treatment of leishmaniasis. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
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Patel A, Ray D, Parekh P, Kuperkar K, Bharatiya B, Aswal VK, Bahadur P, Patel VI. Self-assembly modulation in star block copolymers by amphiphilic diol: A scattering insight. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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5
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Bhattacharjee S, Pandit S, Bahadur P, Seth D. Photophysical Studies of a Hydrophilic Molecule in Normal and Reverse Tetronics® Solutions. J Photochem Photobiol A Chem 2023. [DOI: 10.1016/j.jphotochem.2023.114660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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6
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Effect of hydrophobic modification of block copolymers on the self-assembly, drug encapsulation and release behavior. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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7
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Chakrabarti C, Khan Pathan S, Deep Punetha V, Pillai SA. Interaction of Tetronics® micelles with stimuli and additives and a commanding aspect towards drug delivery: An overview. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Zueva OS, Makarova AO, Zvereva ER, Kh. Kurbanov R, Salnikov VV, Turanov AN, Zuev YF. Industrial block copolymer surfactants: Diversity of associative forms and interaction with carbon nanomaterial. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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9
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Patel D, Ray D, Aswal VK, Kuperkar K, Bahadur P. Micellar assembly leading to structural growth/transition in normal and reverse Tetronics® in single and mixed solution environment. SOFT MATTER 2022; 18:4543-4553. [PMID: 35674288 DOI: 10.1039/d2sm00321j] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This study scrutinizes the self-association of ethylene oxide (EO)-propylene oxide (PO)-based star-shaped block copolymers as normal Tetronic® (T904) and reverse Tetronic® R (T90R4) with varying molecular characteristics and different hydrophilic-hydrophobic ratios in an aqueous solution environment. These thermo-responsive solutions appear clear, transparent or bluish up to 10%w/v, which anticipated the probable transition of unimers to spherical or ellipsoidal micelles which is complemented by scattering experiments. In a single-solution environment, 10%w/v T904 formed star-shaped micelles at ambient temperature and exhibited a micellar growth/transition with temperature ageing. While 10%w/v T90R4 exists as unimers or a Gaussian coil over a wide range of temperature. Very interestingly, close to the cloud point (CP) flower-shaped spherical and ellipsoidal micelles were formed. A similar proposed micellar scheme was also examined for mixed systems T904 : T90R4 in varying ratios (1 : 0, 3 : 1, 1 : 1, 1 : 3 and 0 : 1) giving an account to the solution behavior of the mixtures. An amalgamation of dynamic light scattering (DLS) and small-angle neutron scattering (SANS) techniques achieved the thorough extraction of the structural parameters of the micellar system. The hydrodynamic diameter (Dh) of the micelles with temperature variation was evaluated from dynamic light scattering (DLS) while the structure factor of the micelles was found by employing small-angle neutron scattering (SANS). Furthermore, the single and mixed micellar systems were quantitatively and qualitatively examined for anticancer drug solubilization using UV-vis spectroscopy for their superior use as potential nanocargos.
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Affiliation(s)
- Dhruvi Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat-395 007, Gujarat, India.
| | - Debes Ray
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai-400 085, Maharashtra, India
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai-400 085, Maharashtra, India
| | - Ketan Kuperkar
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat-395 007, Gujarat, India.
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Surat-395 007, Gujarat, India
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Chakrabarti C, Pillai SA, Ray D, Aswal VK, Kumar S. Aggregation behaviour of star block copolymers T1304 and T1307 in the presence of toluene, phenol and methyl phenols: A DLS and SANS study. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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11
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Lecot N, Rodríguez G, Stancov V, Fernández M, González M, Glisoni RJ, Cabral P, Cerecetto H. Development of fluorescent- and radio-traceable T1307-polymeric micelles as biomedical agents for cancer diagnosis: biodistribution on 4T1 tumor-bearing mice. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e191055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
| | | | | | | | | | | | | | - Hugo Cerecetto
- Universidad de la República, Uruguay; Universidad de la República, Uruguay
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Lakshmi SN, Bahadur P, Choudhury SD. Fate of Photoinduced Electron Transfer Reactions with Temperature- and pH-Induced Assembly/Disassembly of Star Block Copolymer Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:14125-14134. [PMID: 34797674 DOI: 10.1021/acs.langmuir.1c02383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The assembly/disassembly of star block copolymers induced by changes in temperature or pH of the medium is anticipated to have interesting implications for hosting/releasing drugs and tuning chemical reactions. This study investigates the possibility of employing the dually sensitive self-assembly of an ethylene oxide-propylene oxide star block copolymer, Tetronic T904, to influence photoinduced electron transfer (ET) reactions, on switching from the assembled state (micelle) when temperature is above the critical micelle temperature (CMT) and pH of the medium is above the pKa of T904 to the dissociated (unimer) state when either the temperature is below the CMT or the polymer is protonated. Steady-state and time-resolved fluorescence techniques have been used to characterize the microenvironments of the reactants in T904 solutions under different temperature and pH conditions and to determine ET rate constants. Interestingly, the bimolecular ET rate constants in both assembled and disassembled states of T904 depict a bell-shaped correlation with the driving force of the reaction, in accordance with Marcus inversion behavior instead of the usual Rehm-Weller behavior seen in conventional solvents. The assembly/disassembly of T904 stimulated by temperature or pH affects the micropolarity in the reactant environment, the magnitude of ET rate constants, and the position of inversion on the exergonicity scale.
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Affiliation(s)
- Suresh Nayana Lakshmi
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, India
| | - Sharmistha Dutta Choudhury
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
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13
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Photoinduced electron transfer reactions in mixed micelles of a star block copolymer and surface active ionic liquids: Role of the anion. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116951] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Chauhan PS, Kumarasamy M, Carcaboso AM, Sosnik A, Danino D. Multifunctional silica-coated mixed polymeric micelles for integrin-targeted therapy of pediatric patient-derived glioblastoma. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112261. [PMID: 34474820 DOI: 10.1016/j.msec.2021.112261] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/09/2021] [Accepted: 06/08/2021] [Indexed: 01/12/2023]
Abstract
Glioblastoma multiforme (GBM) remains a major cause of mortality because treatments are precluded by to the limited transport and penetration of chemotherapeutics across the blood-brain barrier. Pitavastatin (PTV) is a hydrophobic Food and Drug Administration (FDA)-approved anticholesterolemic agent with reported anti-GBM activity. In the present study, we encapsulate PTV in silica-coated polymeric micelles (SiO2 PMs) surface-modified with the cyclic peptide Arg-Gly-Asp-Phe-Val (cRGDfV) that actively targets the αvβ3 integrin overexpressed in the BBB endothelium and GBM. A central composite design is utilized to optimize the preparation process and improve the drug encapsulation ratio from 131 to 780 μg/mL. The silica shell provides full colloidal stability upon extreme dilution and enables a better control of the release kinetics in vitro with 28% of the cargo released after 12 h. Furthermore, SiO2 PMs show excellent compatibility and are internalized by human BBB endothelial cells, astrocytes and pericytes, as shown by confocal laser scanning fluorescence microscopy and flow cytometry. Finally, the anticancer efficacy is assessed in a pediatric patient-derived glioma cell line expressing high levels of the integrin subunits αv, β3 and β5. This PTV-loaded nanocarrier triggers apoptosis by reducing the mRNA level of anti-apoptotic genes NF-kβ, IL-6, BIRC1 and BIRC5 by 89%, 33%, 81% and 63%, respectively, and the cell viability by >60%. Overall, our results suggest the potential of these hybrid nanocarriers for the targeted therapy of GBM and other tumors overexpressing integrin receptors.
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Affiliation(s)
- Prakram Singh Chauhan
- CryoEM Laboratory of Soft Matter, Faculty of Biotechnology and Food Engineering, Technion Israel Institute of Technology, Haifa 3200003, Israel
| | - Murali Kumarasamy
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Angel M Carcaboso
- Institut de Recerca Sant Joan de Deu, Department of Pediatric Oncology, Hospital Sant Joan de Deu, 08950 Barcelona, Spain.
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel.
| | - Dganit Danino
- CryoEM Laboratory of Soft Matter, Faculty of Biotechnology and Food Engineering, Technion Israel Institute of Technology, Haifa 3200003, Israel; Biotechnology and Food Engineering, Guangdong Technion-Israel Institute of Technology, Shantou 515063, China.
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15
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Roy D, Naskar B, Bala T. Exploring Langmuir-Blodgett technique to investigate effect of various subphase conditions on monolayers formed by amphiphilic block co-polymers tetronic 701 and tetronic 90R4. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126924] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Ziolek RM, Smith P, Pink DL, Dreiss CA, Lorenz CD. Unsupervised Learning Unravels the Structure of Four-Arm and Linear Block Copolymer Micelles. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02523] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert M. Ziolek
- Biological Physics and Soft Matter Group, Department of Physics, King’s College London, London WC2R 2LS, U.K
| | - Paul Smith
- Biological Physics and Soft Matter Group, Department of Physics, King’s College London, London WC2R 2LS, U.K
| | - Demi L. Pink
- Biological Physics and Soft Matter Group, Department of Physics, King’s College London, London WC2R 2LS, U.K
| | - Cécile A. Dreiss
- Institute of Pharmaceutical Science, King’s College London, London SE1 9NH, U.K
| | - Christian D. Lorenz
- Biological Physics and Soft Matter Group, Department of Physics, King’s College London, London WC2R 2LS, U.K
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Nanocomposite gels of poloxamine and Laponite for β-Lapachone release in anticancer therapy. Eur J Pharm Sci 2021; 163:105861. [PMID: 33930520 DOI: 10.1016/j.ejps.2021.105861] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 04/06/2021] [Accepted: 04/22/2021] [Indexed: 12/24/2022]
Abstract
Nano-hybrid systems have been shown to be an attractive platform for drug delivery. Laponite® RD (LAP), a biocompatible synthetic clay, has been exploited for its ability to establish of strong secondary interactions with guest compounds and hybridization with polymers or small molecules that improves, for instance, cell adhesion, proliferation, and differentiation or facilitates drug attachment to their surfaces through charge interaction. In this work, LAP was combined with Tetronics, X-shaped amphiphilic PPO-PEO (poly (propylene oxide)-poly (ethylene oxide) block copolymers. β-Lapachone (BLPC) was selected for its anticancer activity and its limited bioavailability due to very low aqueous solubility, with the aim to improve this by using LAP/Tetronic nano-hybrid systems. The nanocarriers were prepared over a range of Tetronic 1304 concentrations (1 to 20% w/w) and LAP (0 to 3% w/w). A combination of physicochemical methods was employed to characterize the hybrid systems, including rheology, particle size and shape (DLS, TEM), thermal analysis (TG and DSC), FTIR, solubility studies and drug release experiments. In vitro cytotoxicity assays were performed with BALB/3T3 and MCF-7 cell lines. In hybrid systems, a sol-gel transition can occur below physiological temperature. BLPC exhibits the most significant increase in solubility in formulations with a high concentration of T1304 (over 10% w/w) and 1.5% w/w LAP, or systems with only LAP (1.5%), with a 50 and 100-fold increase in solubilisation, respectively. TEM images showed spherical micelles of T1304, which elongated into wormlike micelles with concentration (20%) and in the presence of LAP, a finding that has not been reported before. A sustained release of BLPC over 140 hours was achieved in one of the formulations (10% T1304 with 1.5% laponite), which also showed the best selectivity index towards cancer cells (MCF-7) over BALB/3T3 cell lines. In conclusion, BLPC-loaded T1304/LAP nano-hybrid systems proved safe and highly effective and are thus a promising formulation for anticancer therapy.
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Simulating Cu electrodeposition in high aspect ratio features: Effect of control mode and uncompensated resistance in S-NDR systems. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.137925] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Poloxamine/D-α-Tocopheryl polyethylene glycol succinate (TPGS) mixed micelles and gels: Morphology, loading capacity and skin drug permeability. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114930] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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20
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Ziolek RM, Omar J, Hu W, Porcar L, González-Gaitano G, Dreiss CA, Lorenz CD. Understanding the pH-Directed Self-Assembly of a Four-Arm Block Copolymer. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01694] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Robert M. Ziolek
- Biological Physics and Soft Matter Group, Department of Physics, King’s College London, London WC2R 2LS, United Kingdom
| | - Jasmin Omar
- Institute of Pharmaceutical Science, King’s College London, London SE1 9NH, United Kingdom
| | - Wenjing Hu
- Institute of Pharmaceutical Science, King’s College London, London SE1 9NH, United Kingdom
| | - Lionel Porcar
- Institut Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
| | | | - Cécile A. Dreiss
- Institute of Pharmaceutical Science, King’s College London, London SE1 9NH, United Kingdom
| | - Christian D. Lorenz
- Biological Physics and Soft Matter Group, Department of Physics, King’s College London, London WC2R 2LS, United Kingdom
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21
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Saoudi O, Lasrem A, Ghaouar N. Studies of the behavior of reverse nonionic surfactant Pluronic 31R1 in aqueous and Propylammonium acetate (PAAc) ionic liquid solutions. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02315-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Patel D, Ray D, Kuperkar K, Aswal VK, Bahadur P. Parabens induced spherical micelle to polymersome transition in thermo-responsive amphiphilic linear and star-shaped EO-PO block copolymers. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113897] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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23
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Puig-Rigall J, Blanco-Prieto MJ, Radulescu A, Dreiss CA, González-Gaitano G. Morphology, gelation and cytotoxicity evaluation of D-α-Tocopheryl polyethylene glycol succinate (TPGS) - Tetronic mixed micelles. J Colloid Interface Sci 2020; 582:353-363. [PMID: 32858401 DOI: 10.1016/j.jcis.2020.08.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/22/2020] [Accepted: 08/02/2020] [Indexed: 01/01/2023]
Abstract
HYPOTHESIS The combination of polymeric surfactants into mixed micelles is expected to improve properties relevant to their use in drug delivery, such as micellar size, gelation, and toxicity. We investigated synergistic effects in mixtures of D-α-Tocopheryl polyethylene glycol succinate (TPGS), an FDA-approved PEGylated derivative of vitamin E, and Tetronic surfactants, pH-responsive and thermogelling polyethylene oxide (PEO)-polypropylene oxide (PPO) 4-arm block copolymers. We hypothesized that mixed micelles would form under specific conditions and provide a handle to tune formulation characteristics. EXPERIMENTS We examined the morphology of the self-assembled structures in mixtures of TPGS with two Tetronic: T1107 and T908, using a combination of dynamic light scattering (DLS), small-angle neutron scattering (SANS), NMR spectroscopy (NOESY and diffusion NMR) and oscillatory rheology, over a range of compositions, temperatures and pH. Cell viability was assessed in NIH/3T3 fibroblasts. FINDINGS The combination of TPGS with either of the two Tetronic produces spherical core-shell micelles that comprise both surfactants in their structure (mixed micelles). T1107 unimers incorporate into TPGS aggregates below the critical micelle temperature of the poloxamine, while mixed micelles only form under limited conditions with T908. At high concentration/temperature, small proportions of TPGS extend the gel phase, more markedly with T1107, with similar elastic moduli (30-50 kPa) and a BCC crystalline structure. Cell viability of NIH/3T3 fibroblasts grown in the hydrogels increases significantly when the poloxamine gels are doped with TPGS, making the combination of poloxamines and TPGS a promising platform for drug delivery.
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Affiliation(s)
- Joan Puig-Rigall
- Departamento de Química, Universidad de Navarra, 31080 Pamplona, Spain
| | - María J Blanco-Prieto
- Departamento de Tecnología y Química Farmacéutica, Universidad de Navarra, 31080 Pamplona, Spain; Instituto de Investigación Sanitaria de Navarra, IdiSNA, Irunlarrea 3, 31008 Pamplona, Spain.
| | - Aurel Radulescu
- Jülich Center for Neutron Science, JCNS at Heinz Maier-Leibnitz Zentrum MLZ, Forschungszentrum Jülich GmbH, Lichtenbergstraße 1, 85747 Garching, Germany
| | - Cécile A Dreiss
- Institute of Pharmaceutical Science, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, UK.
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Lecot N, Glisoni R, Oddone N, Benech J, Fernández M, Gambini JP, Cabral P, Sosnik A. Glucosylated Polymeric Micelles Actively Target a Breast Cancer Model. ADVANCED THERAPEUTICS 2020. [DOI: 10.1002/adtp.202000010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Nicole Lecot
- Laboratorio de ATN en Bioquímica y Biotecnología, Centro de Investigaciones Nucleares Facultad de Ciencias Universidad de la República Mataojo 2055 Montevideo 11400 Uruguay
| | - Romina Glisoni
- Universidad de Buenos Aires Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica II, NANOBIOTEC‐CONICET Junín 956 Ciudad Autónoma de Buenos Aires C1113AAD Argentina
| | - Natalia Oddone
- Laboratorio de Señalización Celular y Nanobiología Instituto de Investigaciones Biológicas Clemente Estable. Av. Italia 3318 Montevideo 11600 Uruguay
| | - Juan Benech
- Laboratorio de Señalización Celular y Nanobiología Instituto de Investigaciones Biológicas Clemente Estable. Av. Italia 3318 Montevideo 11600 Uruguay
| | - Marcelo Fernández
- Laboratorio de Experimentación Animal, Centro de Investigaciones Nucleares, Facultad de Ciencias Universidad de la República Mataojo 2055 Montevideo 11400 Uruguay
| | - Juan Pablo Gambini
- Centro de Medicina Nuclear, Hospital de Clínicas, Facultad de Medicina Universidad de la Republica Av. Italia s/n Montevideo 11600 Uruguay
| | - Pablo Cabral
- Laboratorio de ATN en Bioquímica y Biotecnología, Centro de Investigaciones Nucleares Facultad de Ciencias Universidad de la República Mataojo 2055 Montevideo 11400 Uruguay
- Centro de Medicina Nuclear, Hospital de Clínicas, Facultad de Medicina Universidad de la Republica Av. Italia s/n Montevideo 11600 Uruguay
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering Technion‐Israel Institute of Technology Technion City Haifa 320003 Israel
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Kaur P, Khullar P, Singh Bakshi M. Multifunctional photo-physiochemical properties of tetronic 304 in aqueous phase: Mechanistic aspects of Au(III) reduction into Au(0). J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2019.112215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Patel D, Ray D, Kuperkar K, Pal H, Aswal VK, Bahadur P. Solubilization, micellar transition and biocidal assay of loaded antioxidants in Tetronic® 1304 micelles. POLYM INT 2020. [DOI: 10.1002/pi.5962] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Dhruvi Patel
- Applied Chemistry Department Sardar Vallabhbhai National Institute of Technology (SVNIT) Surat India
| | - Debes Ray
- Solid State Physics Division Bhabha Atomic Research Centre Mumbai India
| | - Ketan Kuperkar
- Applied Chemistry Department Sardar Vallabhbhai National Institute of Technology (SVNIT) Surat India
| | - Haridas Pal
- Analytical Division Bhabha Atomic Research Centre Mumbai India
| | - Vinod K Aswal
- Solid State Physics Division Bhabha Atomic Research Centre Mumbai India
| | - Pratap Bahadur
- Department of Chemistry Veer Narmad South Gujarat University (VNSGU) Surat India
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Self-assembly and nanostructure of poly(vinyl alcohol)-graft-poly(methyl methacrylate) amphiphilic nanoparticles. J Colloid Interface Sci 2019; 553:512-523. [DOI: 10.1016/j.jcis.2019.06.047] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/14/2019] [Accepted: 06/15/2019] [Indexed: 01/08/2023]
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Pillai SA, Lage EV, Casas M, Sández-Macho I, Wang MR, Chen LJ, Bahadur P. A comparative study on the effect of structural variations of co-solvent on the Tetronic® micelles with widely different hydrophobicity. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.02.138] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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29
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Xue Y, Sun J, Xiong S, Chai H, Xin X, Xu G, Liu T. Effect of block sequence of hyperbranched block copolymers on the aggregation behavior, drug solubilization and release property. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cabana-Montenegro S, Barbosa S, Taboada P, Concheiro A, Alvarez-Lorenzo C. Syringeable Self-Organizing Gels that Trigger Gold Nanoparticle Formation for Localized Thermal Ablation. Pharmaceutics 2019; 11:E52. [PMID: 30691114 PMCID: PMC6410185 DOI: 10.3390/pharmaceutics11020052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 01/17/2019] [Accepted: 01/22/2019] [Indexed: 01/03/2023] Open
Abstract
Block copolymer dispersions that form gels at body temperature and that additionally are able to reduce a gold salt to nanoparticles (AuNPs) directly in the final formulation under mild conditions were designed as hybrid depots for photothermal therapy. The in situ gelling systems may retain AuNPs in the application zone for a long time so that localized elevations of temperature can be achieved each time the zone is irradiated. To carry out the work, dispersions were prepared covering a wide range of poloxamine Tetronic 1307:gold salt molar ratios in NaCl media (also varying from pure water to hypertonic solution). Even at copolymer concentrations well above the critical micelle concentration, the reducing power of the copolymer was maintained, and AuNPs were formed in few hours without extra additives. Varying the copolymer and NaCl concentrations allowed a fine tuning of nanoparticles' shape from spherical to triangular nanoplates, which determined that the surface plasmon resonance showed a maximum intensity at 540 nm or at 1000 nm, respectively. The information gathered on the effects of (i) the poloxamine concentration on AuNPs' size and shape under isotonic conditions, (ii) the AuNPs on the temperature-induced gelling transition, and (iii) the gel properties on the photothermal responsiveness of the AuNPs during successive irradiation cycles may help the rational design of one-pot gels with built-in temperature and light responsiveness.
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Affiliation(s)
- Sonia Cabana-Montenegro
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Silvia Barbosa
- Área de Física de la Materia Condensada, Facultad de Física, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Pablo Taboada
- Área de Física de la Materia Condensada, Facultad de Física, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Angel Concheiro
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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31
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Samanta P, Halder P, Bahadur P, Dutta Choudhury S, Pal H. Effect of Ionic Liquids as Cosurfactants on Photoinduced Electron Transfer in Tetronic Micelles. J Phys Chem B 2018; 122:10190-10201. [PMID: 30351120 DOI: 10.1021/acs.jpcb.8b08766] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This study investigates the role of varying alkyl chain lengths of a series of surface-active 1-alkyl-3-methylimidazolium tetrafluoroborate ([C nMIm][BF4], n = 4, 6, and 10) ionic liquids (ILs) as cosurfactants in modifying the micellar characteristics of a tetronic star-block copolymer, T1304, and the consequent effects on bimolecular photoinduced electron transfer (PET) reactions carried out in these T1304-IL mixed micellar systems. Using coumarin 153 as the probe dye and following ground-state absorption, steady-state fluorescence, and time-resolved emission measurements, the micropolarity, microviscosity, and solvent relaxation dynamics in the micellar palisade layer have been revealed both in pure T1304 and in T1304-IL systems. With increasing alkyl chain length of the ILs, the palisade layer of the micelles gradually becomes more polar and less viscous, suggesting better incorporation of the longer alkyl chain length ILs as cosurfactants into the T1304 micelles. The bimolecular PET reactions, involving 7-aminocoumarins as acceptors and N, N-dimethylaniline as the donor, are considerably modulated in T1304 micelles by the presence of the ILs, the effect being more prominent for ILs with longer alkyl chain lengths. In all of the micellar systems, correlations of the electron transfer (ET) kinetics with the reaction exergonicity (-Δ G0) show clear Marcus inversion (MI) behavior where onsets of MI invariably appear at significantly lower exergonicities, suggesting the involvement of a two-dimensional ET mechanism. Interestingly, the Marcus correlations display significant variations, namely, enhanced reaction rates and gradual shift in the onset of MI toward higher exergonicity, as longer alkyl chain length ILs are sequentially introduced as cosurfactants. From the observed results, it is convincingly realized that 1-alkyl-3-methylimidazolium-based ILs can be used satisfactorily as cosurfactants in tetronic star-block copolymer solutions to modulate PET reactions very significantly for their better utilizations in suitable applied areas.
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Affiliation(s)
- Papu Samanta
- Homi Bhabha National Institute , Training School Complex , Anushaktinagar, Mumbai 400094 , India
| | | | - Pratap Bahadur
- Department of Chemistry , Veer Narmad South Gujarat University , Surat 395007 , India
| | | | - Haridas Pal
- Homi Bhabha National Institute , Training School Complex , Anushaktinagar, Mumbai 400094 , India
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Sheth U, Bahadur A. In-vitro evaluation of cytotoxic and antioxidant properties of drugs solubilized in EO-PO star block copolymer micelles. Colloids Surf B Biointerfaces 2018; 171:343-350. [DOI: 10.1016/j.colsurfb.2018.07.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/01/2018] [Accepted: 07/23/2018] [Indexed: 10/28/2022]
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Cavallaro G, Lazzara G, Lisuzzo L, Milioto S, Parisi F. Selective adsorption of oppositely charged PNIPAAM on halloysite surfaces: a route to thermo-responsive nanocarriers. NANOTECHNOLOGY 2018; 29:325702. [PMID: 29771681 DOI: 10.1088/1361-6528/aac5c3] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Halloysite nanotubes were functionalized with stimuli-responsive macromolecules to generate smart nanohybrids. Poly(N-isopropylacrylamide)-co-methacrylic acid (PNIPAAM-co-MA) was selectively adsorbed into halloysite lumen by exploiting electrostatic interactions. Amine-terminated PNIPAAM polymer was also investigated that selectively interacts with the outer surface of the nanotubes. The adsorption site has a profound effect on the thermodynamic behavior and therefore temperature responsive features of the hybrid material. The drug release kinetics was investigated by using diclofenac as a non-steroidal anti-inflammatory drug model. The release kinetics depends on the nanoarchitecture of the PNIPAAM/halloysite based material. In particular, diclofenac release was slowed down above the LCST for PNIPAAM-co-MA/halloysite. Opposite trends occurred for halloysite functionalized with PNIPAAM at the outer surface. This work represents a further step toward the opportunity to extend and control the delivery conditions of active species, which represent a key point in technological applications.
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Affiliation(s)
- Giuseppe Cavallaro
- Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Viale delle Scienze pad 17, I-90128 Palermo, Italy
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34
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Phase behaviour, micellar structure and linear rheology of tetrablock copolymer Tetronic 908. J Colloid Interface Sci 2018; 524:42-51. [DOI: 10.1016/j.jcis.2018.03.096] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/21/2018] [Accepted: 03/27/2018] [Indexed: 11/23/2022]
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35
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Synthesis, aggregation behavior, and simvastatin solubilization by block polyethers with different structures. Colloid Polym Sci 2018. [DOI: 10.1007/s00396-018-4341-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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36
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Samanta P, Rane S, Bahadur P, Dutta Choudhury S, Pal H. Tetronic Star Block Copolymer Micelles: Photophysical Characterization of Microenvironments and Applicability for Tuning Electron Transfer Reactions. J Phys Chem B 2018; 122:6079-6093. [DOI: 10.1021/acs.jpcb.8b01778] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Papu Samanta
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | | | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, India
| | | | - Haridas Pal
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
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37
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Schlachet I, Sosnik A. Protoporphyrin IX-modified chitosan-g-oligo(NiPAAm) polymeric micelles: from physical stabilization to permeability characterization in vitro. Biomater Sci 2018; 5:128-140. [PMID: 27905575 DOI: 10.1039/c6bm00667a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two main hurdles persist towards the more extensive bench-to-bed side translation of non-parenteral polymeric micelles. The first pertains to their thermodynamically-driven disassembly under uncontrolled dilution conditions in the biological milieu and upon interaction with biomacromolecules (e.g., proteins). The second is related to the relatively poor understanding of the pathways by which polymeric micelles improve the bioavailability of the payload by mucosal routes (e.g., intestinal). In this work, a chitosan-g-oligo(N-isopropylacrylamide) (CS-g-oligo(NiPAAm)) copolymer was modified with non-cytotoxic amounts of protoporphyrin IX (PP), a planar molecule of amphiphilic character that undergoes self-aggregation in water by forming π-π stacked supramolecular structures, to induce micellization under disfavored conditions and to serve as a fluorescent tracer for the measurement of the micelle permeability across a model of the intestinal epithelium in vitro. Findings indicated that the conjugation of PP amounts as low as 2% w/w induced the formation of micelles at temperatures below the lower critical solution temperature of oligo(NiPAAm) (30-32 °C). Moreover, permeability studies conducted at both 4 °C and 37 °C strongly suggested that despite the relatively large size of the micelles (200-300 nm), they cross the epithelial monolayer mainly by a paracellular pathway due to the opening of tight junctions. Complementary uptake studies by flow cytometry indicated that no endocytosis, though due to passive or facilitated diffusion, some internalization takes place.
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Affiliation(s)
- Inbar Schlachet
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa, Israel.
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa, Israel.
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38
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Rey-Rico A, Cucchiarini M. PEO-PPO-PEO Tri-Block Copolymers for Gene Delivery Applications in Human Regenerative Medicine-An Overview. Int J Mol Sci 2018. [PMID: 29518011 PMCID: PMC5877636 DOI: 10.3390/ijms19030775] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Lineal (poloxamers or Pluronic®) or X-shaped (poloxamines or Tetronic®) amphiphilic tri-block copolymers of poly(ethylene oxide) and poly(propylene oxide) (PEO-PPO-PEO) have been broadly explored for controlled drug delivery in different regenerative medicine approaches. The ability of these copolymers to self-assemble as micelles and to undergo sol-to-gel transitions upon heating has endowed the denomination of “smart” or “intelligent” systems. The use of PEO-PPO-PEO copolymers as gene delivery systems is a powerful emerging strategy to improve the performance of classical gene transfer vectors. This review summarizes the state of art of the application of PEO-PPO-PEO copolymers in both nonviral and viral gene transfer approaches and their potential as gene delivery systems in different regenerative medicine approaches.
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Affiliation(s)
- Ana Rey-Rico
- Center of Experimental Orthopaedics, Saarland University Medical Center, Kirrbergerstr. Bldg 37, D-66421 Homburg/Saar, Germany.
- Centro de Investigacións Científicas Avanzadas (CICA), Universidade da Coruña, Campus de A Coruña, 15071 A Coruña, Spain.
| | - Magali Cucchiarini
- Center of Experimental Orthopaedics, Saarland University Medical Center, Kirrbergerstr. Bldg 37, D-66421 Homburg/Saar, Germany.
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39
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Segredo-Morales E, Martin-Pastor M, Salas A, Évora C, Concheiro A, Alvarez-Lorenzo C, Delgado A. Mobility of Water and Polymer Species and Rheological Properties of Supramolecular Polypseudorotaxane Gels Suitable for Bone Regeneration. Bioconjug Chem 2018; 29:503-516. [DOI: 10.1021/acs.bioconjchem.7b00823] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Elisabet Segredo-Morales
- Department of Chemical
Engineering and Pharmaceutical Technology, Institute of Biomedical
Technologies (ITB), Center for Biomedical Research of the Canary Islands
(CIBICAN), Universidad de La Laguna, 30200 La Laguna, Spain
| | | | - Ana Salas
- Departamente Bioquímica, Microbiología,
Biología Celular y Genética, Instituto Universitario
de Enfermedades Tropicales y Salud Pública de Canarias (IUETSPC), Universidad de La Laguna, 38207 La Laguna, Spain
| | - Carmen Évora
- Department of Chemical
Engineering and Pharmaceutical Technology, Institute of Biomedical
Technologies (ITB), Center for Biomedical Research of the Canary Islands
(CIBICAN), Universidad de La Laguna, 30200 La Laguna, Spain
| | | | | | - Araceli Delgado
- Department of Chemical
Engineering and Pharmaceutical Technology, Institute of Biomedical
Technologies (ITB), Center for Biomedical Research of the Canary Islands
(CIBICAN), Universidad de La Laguna, 30200 La Laguna, Spain
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40
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Pillai SA, Lee CF, Ray D, Aswal VK, Wang MR, Chen LJ, Bahadur P. Influence of urea on single and mixed micellar systems of Tetronics®. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.12.101] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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41
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Vyas B, Pillai SA, Bahadur A, Bahadur P. A Comparative Study on Micellar and Solubilizing Behavior of Three EO-PO Based Star Block Copolymers Varying in Hydrophobicity and Their Application for the In Vitro Release of Anticancer Drugs. Polymers (Basel) 2018; 10:polym10010076. [PMID: 30966111 PMCID: PMC6414926 DOI: 10.3390/polym10010076] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 01/01/2018] [Accepted: 01/13/2018] [Indexed: 11/18/2022] Open
Abstract
The temperature and pH dependent self-assembly of three star shaped ethylene oxide-propylene oxide (EO-PO) block copolymers (Tetronics® 304, 904 and 908) with widely different hydrophobicity was examined in aqueous solutions. Physico-chemical methods viz. viscosity, cloud point, solubilization along with thermal, scattering and spectral techniques shows strongly temperature and salt dependent solution behavior. T304 possessing low molecular weight did not form micelles; moderately hydrophilic T904 remained as micelles at ambient temperature and showed micellar growth while very hydrophilic T908 formed micelles at elevated temperatures. The surface activity/micellization/solubilization power was favored in the presence of salt. The copolymers turn more hydrophilic in acidic pH due to protonation of central ethylene diamine moiety that hinders micelle formation. The solubilization of a model insoluble azo dye 1-(o-Tolylazo)-2-naphthol (Orange OT) and hydrophobic drugs (quercetin and curcumin) for copolymer solutions in aqueous and salt solutions are also reported. Among the three copolymers, T904 showed maximum solubility of dye and drugs, hence the in vitro release of drugs from T904 micelles was estimated and the effect on cytotoxicity of loading the drugs in T904 micelles was compared with the cytotoxicity of free drugs on the CHO-K1 cells. The results from the present work provide a better insight in selection of Tetronics® for their application in different therapeutic applications.
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Affiliation(s)
- Bijal Vyas
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, India.
| | - Sadafara A Pillai
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, India.
| | - Anita Bahadur
- Department of Zoology, PT Sarvajanik College of Science, Surat 395001, India.
| | - Pratap Bahadur
- Department of Chemistry, Veer Narmad South Gujarat University, Surat 395007, India.
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42
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Lage EV, Pillai SA, Pal H, Bahadur A, Casas M, Sández-Macho I, Bahadur P. Urea induced changes in self-assembly and aggregate microstructures of amphiphilic star block copolymers with widely different hydrophobicity. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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43
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Xue Y, Sun J, Xiong S, Liu T, Xin X, Xu G. Synthesis, self-assembly and drug solubilization of hyperbranched block polyethers. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.11.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Poloxamers, poloxamines and polymeric micelles: Definition, structure and therapeutic applications in cancer. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1426-x] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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45
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Horiuchi T, Sakai T, Sanada Y, Watanabe K, Aida M, Katsumoto Y. Association Behavior of Poly(ethylene oxide)-Poly(propylene oxide) Alternating Multiblock Copolymers in Water toward Thermally Induced Phase Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14649-14656. [PMID: 29236506 DOI: 10.1021/acs.langmuir.7b02810] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Thermal changes in the association behavior of poly(ethylene oxide)-poly(propylene oxide) alternating multiblock (PEO-PPO AMB) copolymers in water are investigated by the use of transmittance and light scattering measurements. Two PEO-PPO AMB copolymers with a different weight fraction of PEO, (EO220PO33)8 and (EO68PO33)9, are prepared. The weight-average molecular weights of (EO220PO33)8 and (EO68PO33)9 estimated by static light scattering measurements are 1.3 × 105 and 4.1 × 104 g mol-1, respectively. The number of PEO-PPO repeating pairs is over 8. It is found that the aqueous solution of (EO220PO33)8 undergoes phase separation with a lower critical solution temperature (LCST) of around 58 °C at 0.3 wt %. For the aqueous (EO68PO33)9 solution, the LCST is estimated to be ca. 42 °C. The critical solution concentration for (EO68PO33)9 is not clear because of a small concentration dependence of Tc at a higher concentration range. Dynamic light scattering measurements indicate that a micellelike aggregate is formed below the LCST. From the Debye plot, it is elucidated that the second virial coefficient, A2, starts going down at around 32 °C for (EO220PO33)8 and below 15 °C for (EO68PO33)9. The A2 value of (EO220PO33)8 approaches 0 near 50 °C, whereas that of (EO68PO33)9 approaches 0 at around 35 °C. At a high temperature, the attractive interaction among the copolymers becomes dominant, thereby inducing the formation of micellelike aggregates.
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Affiliation(s)
- Tasuku Horiuchi
- Department of Chemistry, Graduate School of Science, Hiroshima University , Kagamiyama 1-3-1, Higashi-hiroshima 739-8526, Japan
| | - Takamasa Sakai
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yusuke Sanada
- Department of Chemistry, Faculty of Science, Fukuoka University , Nanakuma 8-19-1, Jonan-ku, Fukuoka 814-0180, Japan
| | - Keisuke Watanabe
- Department of Chemistry, Faculty of Science, Fukuoka University , Nanakuma 8-19-1, Jonan-ku, Fukuoka 814-0180, Japan
| | - Misako Aida
- Department of Chemistry, Graduate School of Science, Hiroshima University , Kagamiyama 1-3-1, Higashi-hiroshima 739-8526, Japan
| | - Yukiteru Katsumoto
- Department of Chemistry, Faculty of Science, Fukuoka University , Nanakuma 8-19-1, Jonan-ku, Fukuoka 814-0180, Japan
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Ungaro F, Catanzano O, d'Angelo I, Diaz-Gomez L, Concheiro A, Miro A, Alvarez-Lorenzo C, Quaglia F. Microparticle-embedded fibroin/alginate beads for prolonged local release of simvastatin hydroxyacid to mesenchymal stem cells. Carbohydr Polym 2017; 175:645-653. [PMID: 28917913 DOI: 10.1016/j.carbpol.2017.08.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/31/2017] [Accepted: 08/09/2017] [Indexed: 12/21/2022]
Abstract
In the present work, we propose silk fibroin/alginate (SF/Alg) beads embedding simvastatin-loaded biodegradable microparticles as a versatile platform capable of tuning SVA release and in so doing osteogenic effects. In a first part of the study, microparticles of poly(lactic-co-glycolic) acid incorporating simvastatin either as lactone (SVL) or as hydroxyacid form (SVA) were prepared by spray-drying. While SVA-loaded microparticles released the drug in three days, long-term release of SVA could be obtained from SVL-loaded microparticles. In this latter case, SVL was promptly transformed to the osteogenic active SVA during release. When tested on mesenchymal stem cells, a time- and dose-dependent effect of SVL-loaded microparticles on cell proliferation and alkaline phosphatase (ALP) activity was found. Thereafter, SVL-loaded microparticles were embedded in SF/Alg beads to limit the initial simvastatin burst and to achieve easier implantation as well. Microparticle-embedded beads showed no cytotoxicity while ALP activity increased. If correctly exploited, the developed system may be suitable as osteogenic polymer scaffolds releasing correct amount of the drug locally for long time-frames.
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Affiliation(s)
- F Ungaro
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
| | - O Catanzano
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
| | - I d'Angelo
- Di.S.T.A.B.i.F., University of Campania "Luigi Vanvitelli", Via Vivaldi 43, 81100 Caserta, Italy
| | - L Diaz-Gomez
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - A Concheiro
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - A Miro
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy.
| | - C Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, R+D Pharma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - F Quaglia
- Drug Delivery Laboratory, Department of Pharmacy, University of Napoli Federico II, Via D. Montesano 49, 80131 Napoli, Italy
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Salt effect on solubilization of hydrophobic drugs in block copolymeric micelles and investigation of their in vitro and in vivo oral efficiency. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.05.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Cagel M, Tesan FC, Bernabeu E, Salgueiro MJ, Zubillaga MB, Moretton MA, Chiappetta DA. Polymeric mixed micelles as nanomedicines: Achievements and perspectives. Eur J Pharm Biopharm 2017; 113:211-228. [PMID: 28087380 DOI: 10.1016/j.ejpb.2016.12.019] [Citation(s) in RCA: 222] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 12/01/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
Abstract
During the past few decades, polymeric micelles have raised special attention as novel nano-sized drug delivery systems for optimizing the treatment and diagnosis of numerous diseases. These nanocarriers exhibit several in vitro and in vivo advantages as well as increased stability and solubility to hydrophobic drugs. An interesting approach for optimizing these properties and overcoming some of their disadvantages is the combination of two or more polymers in order to assemble polymeric mixed micelles. This review article gives an overview on the current state of the art of several mixed micellar formulations as nanocarriers for drugs and imaging probes, evaluating their ongoing status (preclinical or clinical stage), with special emphasis on type of copolymers, physicochemical properties, in vivo progress achieved so far and toxicity profiles. Besides, the present article presents relevant research outcomes about polymeric mixed micelles as better drug delivery systems, when compared to polymeric pristine micelles. The reported data clearly illustrates the promise of these nanovehicles reaching clinical stages in the near future.
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Affiliation(s)
- Maximiliano Cagel
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Fiorella C Tesan
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Física, Buenos Aires, Argentina
| | - Ezequiel Bernabeu
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Maria J Salgueiro
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Física, Buenos Aires, Argentina
| | - Marcela B Zubillaga
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Física, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Marcela A Moretton
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Diego A Chiappetta
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Tecnología Farmacéutica I, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
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Chevry M, Vanbésien T, Menuel S, Monflier E, Hapiot F. Tetronics/cyclodextrin-based hydrogels as catalyst-containing media for the hydroformylation of higher olefins. Catal Sci Technol 2017. [DOI: 10.1039/c6cy02070d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The rhodium-catalyzed hydroformylation of alkenes has been investigated under biphasic conditions using combinations of α-cyclodextrin (α-CD) and poloxamines (Tetronics®).
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Affiliation(s)
- M. Chevry
- CNRS
- Centrale Lille
- ENSCL
- UMR 8181
- Unité de Catalyse et de Chimie du Solide (UCCS)
| | - T. Vanbésien
- CNRS
- Centrale Lille
- ENSCL
- UMR 8181
- Unité de Catalyse et de Chimie du Solide (UCCS)
| | - S. Menuel
- CNRS
- Centrale Lille
- ENSCL
- UMR 8181
- Unité de Catalyse et de Chimie du Solide (UCCS)
| | - E. Monflier
- CNRS
- Centrale Lille
- ENSCL
- UMR 8181
- Unité de Catalyse et de Chimie du Solide (UCCS)
| | - F. Hapiot
- CNRS
- Centrale Lille
- ENSCL
- UMR 8181
- Unité de Catalyse et de Chimie du Solide (UCCS)
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50
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Thermal and scattering studies of Tetronic® 1304 micelles in the presence of industrially important glycols, their oligomers, cellosolves, carbitols, ethers and esters. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.07.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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