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Fitri AMN, Mahfufah U, Aziz SBA, Sultan NAF, Mahfud MAS, Saputra MD, Elim D, Bakri NF, Arjuna A, Sari YW, Domínguez-Robles J, Pamornpathomkul B, Mir M, Permana AD. Enhancement of skin localization of β-carotene from red fruit (Pandanus conoideus Lam.) using solid dispersion-thermoresponsive gel delivered via polymeric solid microneedles. Int J Pharm 2024; 660:124307. [PMID: 38852748 DOI: 10.1016/j.ijpharm.2024.124307] [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: 02/20/2024] [Revised: 05/13/2024] [Accepted: 06/04/2024] [Indexed: 06/11/2024]
Abstract
Red fruit (Pandanus conoideus Lam.) boasts high β-carotene (BC) content, often consumed orally. However, absorption issues and low bioavailability due to food matrix interaction have led to transdermal delivery exploration. Nevertheless, BC has a short skin retention time. To address these limitations, this study formulates a β-carotene solid dispersion (SD-BC) loaded thermoresponsive gel combined with polymeric solid microneedles (PSM) to enhance in vivo skin bioavailability. Characterization of SD-BC includes saturation solubility, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and in vitro release. Characterization of SD-BC thermoresponsive gel includes gelation temperature, viscosity, rheological behaviour, pH, bio-adhesiveness, spreadability, and extrudability. PSM's mechanical properties and insertion capability were assessed. Ex vivo and in vivo dermato-pharmacokinetic studies, drug content, hemolysis, and skin irritation assessments were conducted to evaluate overall performance. Results confirm amorphous SD-BC formation, enhancing solubility. Both SD-BC thermoresponsive gel and PSM exhibit favourable characteristics, including rheological properties and mechanical strength. In vitro release studies showed a seven-fold increase in BC release compared to plain hydrogel. SD-BC thermoresponsive gel combined with PSM achieves superior ex vivo permeation (Cmax = 305.43 ± 32.07 µg.mL-1) and enhances in vivo dermato-pharmacokinetic parameters by 200-400 %. Drug content, hemolysis, and skin irritation studies confirmed its safety and non-toxicity.
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Affiliation(s)
| | - Ulfah Mahfufah
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | | | | | | | | | - Diany Elim
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Nur Fadillah Bakri
- Department of Pharmacy, Cendrawasih University, Jayapura 99224, Indonesia
| | - Andi Arjuna
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Yessie Widya Sari
- Faculty of Mathematics and Natural Science, IPB University, Bogor 16680, Indonesia
| | - Juan Domínguez-Robles
- Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Universidad de Sevilla, Seville 41012, Spain
| | | | - Maria Mir
- Department of Pharmacy, Iqra University Islamabad Campus, Islamabad, Pakistan
| | - Andi Dian Permana
- Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia.
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2
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Christopoulou A, Kazamiakis C, Iatridi Z, Bokias G. Controlled Amphiphilicity and Thermo-Responsiveness of Functional Copolymers Based on Oligo(Ethylene Glycol) Methyl Ether Methacrylates. Polymers (Basel) 2024; 16:1456. [PMID: 38891403 PMCID: PMC11174388 DOI: 10.3390/polym16111456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 05/08/2024] [Accepted: 05/18/2024] [Indexed: 06/21/2024] Open
Abstract
In this work, comb homopolymers as well as comb-type copolymers of thermo-responsive oligo(ethylene glycol methyl ether methacrylate)s, OEGMAs, with various chain lengths (DEGMA, PEGMA500, and PEGMA950 containing 2, 9, or 19 repeating ethylene glycol units, respectively) were synthesized through free radical (co)polymerization. For the copolymers, either the functional hydrophobic glycidyl methacrylate (GMA) or the inert hydrophilic N,N-dimethylacrylamide (DMAM) were selected as comonomers. The self-assembly and thermo-responsive behavior of the products was investigated through Nile Red fluorescence probing, turbidimetry, and dynamic light scattering (DLS). Interestingly, it was found that all OEGMA-based homopolymers exhibit a tendency to self-organize in aqueous media, in addition to thermo-responsiveness. The critical aggregation concentration (CAC) increases with the number of repeating ethylene oxide units in the OEGMA macromonomers (CAC was found to be 0.003, 0.01, and 0.03% w/v for the homopolymers PDEGMA, PPEGMA500, and PPEGMA950, respectively). Moreover, the CAC of the copolymers in aqueous media is highly affected by the incorporation of hydrophobic GMA or hydrophilic DMAM units, leading to lower or higher values, respectively. Thus, the CAC decreases down to 0.003% w/v for the GMA-richest copolymer of PEGMA950, whereas CAC increases up to 0.01% w/v for the DMAM-richest copolymer of DEGMA. Turbidimetry and DLS studies proved that the thermo-sensitivity of the polymers is governed by several parameters such as the number of repeating ethylene glycol groups in the side chains of the OEGMAs, the molar percentage of the hydrophobic or hydrophilic comonomers, along with the addition of salts in the aqueous polymer solutions. Thus, the cloud point of the homopolymer PDEGMA was found at 23 °C and it increases to 33.5 °C for the DMAM-richest copolymer of DEGMA. Lastly, the formation of a hydrogel upon heating aqueous mixtures of the GMA-comprising copolymers with silica nanoparticles overnight is strong evidence of the functional character of these polymers.
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Affiliation(s)
- Aggeliki Christopoulou
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece; (A.C.); (C.K.); (G.B.)
| | - Charalampos Kazamiakis
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece; (A.C.); (C.K.); (G.B.)
| | - Zacharoula Iatridi
- Department of Materials Science, University of Patras, GR-26504 Patras, Greece
| | - Georgios Bokias
- Department of Chemistry, University of Patras, GR-26504 Patras, Greece; (A.C.); (C.K.); (G.B.)
- Foundation for Research and Technology Hellas (FORTH), Institute of Chemical Engineering and High Temperature Chemical Processes, GR-26504 Patras, Greece
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3
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Rajbanshi A, Da Silva MA, Mahmoudi N, Janeczek A, Shaw A, Dawson J, Cook MT. Branched copolymer surfactants impart thermoreversible gelation to LAPONITE® gels. SOFT MATTER 2023; 20:103-114. [PMID: 38050736 DOI: 10.1039/d3sm01271a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
This investigation seeks to integrate LAPONITE® clay gels with thermoresponsive branched copolymer surfactants (BCSs) to develop advanced functional materials with temperature-induced sol-gel behaviour. It is known that a diverse range of molecules adsorb strongly to clays which may be used to control liberation of the species in healthcare applications, and as such the development of polymer/clay hybrid materials which can add function to the native clay behaviour are of great interest. BCS were synthesised with a structure that encompasses poly(ethylene glycol)methacrylate (PEGMA), ethylene glycol dimethacrylate (EGDMA), and dodecanethiol (DDT), conferring versatile and tuneable thermoresponsive attributes. Systematic modulation of the monomer : DDT/initiator ratio was used to facilitate the synthesis of BCS architectures spanning a range of molecular weights. Through application of small-amplitude oscillatory shear (SAOS) rheology and small-angle neutron scattering (SANS) in conjunction with controlled temperature variations, the sol-gel transition dynamics of these nanocomposite materials were elucidated. Complementary insights into the mechanisms underpinning this transition and temperature-induced alterations in the constituents are gleaned through the utilization of SANS techniques employing contrast-matching methodologies to mitigate clay and polymer scattering interference. It is found that heating systems from room- to body- temperature induces self-assembly of BCS in the bulk aqueous phase with concurrent structuration of clay in gel-forming samples with lower number average molecular weight (Mn). SANS study unpicks this phenomenon to find that gelation occurs with concurrent aggregation of BCS in the bulk, inducing clay-clay interactions only in lower Mn BCS systems with large nanoaggregates.
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Affiliation(s)
- Abhishek Rajbanshi
- UCL School of Pharmacy, University College London, London, WC1N 1AX, UK.
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, AL10 9AB, UK.
- Institute of Pharmaceutical Science, King's College London, London, SE1 9NH, UK
| | - Marcelo Alves Da Silva
- School of Life and Medical Sciences, University of Hertfordshire, Hatfield, AL10 9AB, UK.
| | - Najet Mahmoudi
- ISIS Muon and Neutron Source, Rutherford Appleton Laboratory, Harwell, Oxford, Didcot OX11 0QX, UK.
| | - Agnieszka Janeczek
- Renovos Biologics Ltd, Science Park, 2 Venture Rd, Chilworth, Southampton, SO16 7NP, UK.
| | - Allison Shaw
- Renovos Biologics Ltd, Science Park, 2 Venture Rd, Chilworth, Southampton, SO16 7NP, UK.
| | - Jonathan Dawson
- Renovos Biologics Ltd, Science Park, 2 Venture Rd, Chilworth, Southampton, SO16 7NP, UK.
- Institute of Developmental Sciences, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD, UK
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4
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da Silva JB, Dos Santos RS, Vecchi CF, da Silva Souza Campanholi K, da Silva Junior RC, de Castro Hoshino LV, Caetano W, Baesso ML, Simas FF, Cook MT, Bruschi ML. Boosting the photodynamic activity of erythrosine B by using thermoresponsive and adhesive systems containing cellulose derivatives for topical delivery. Int J Biol Macromol 2023; 245:125491. [PMID: 37353125 DOI: 10.1016/j.ijbiomac.2023.125491] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 06/08/2023] [Accepted: 06/18/2023] [Indexed: 06/25/2023]
Abstract
Erythrosine displays potential photodynamic activity against microorganisms and unhealthy cells. However, erythrosine has high hydrophilicity, negatively impacting on permeation through biological membranes. Combining biological macromolecules and thermoresponsive polymers may overcome these erythrosine-related issues, enhancing retention of topically applied drugs. The aim of this work was to investigate the performance of adhesive and thermoresponsive micellar polymeric systems, containing erythrosine in neutral (ERI) or disodium salt (ERIs) states. Optimized combinations of poloxamer 407 (polox407) and sodium carboxymethylcellulose (NaCMC) or hydroxypropyl methylcellulose (HPMC) were used as platforms for ERI/ERIs delivery. The rheological and mechanical properties of the systems was explored. Most of the formulations were plastic, thixotropic and viscoelastic at 37 °C, with suitable gelation temperature for in situ gelation. Mechanical parameters were reduced in the presence of the photosensitizer, improving the softness index. Bioadhesion was efficient for all hydrogels, with improved parameters for mucosa in contrast to skin. Formulations composed of 17.5 % polox407 and 3 % HPMC or 1 % NaCMC with 1 % (w/w) ERI/ERIs could release the photosensitizer, reaching different layers of the skin/mucosa, ensuring enough production of cytotoxic species for photodynamic therapy. Functional micelles could boost the photodynamic activity of ERI and ERIs, improving their delivery and contact time with the cells.
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Affiliation(s)
- Jéssica Bassi da Silva
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | - Rafaela Said Dos Santos
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | - Camila Felix Vecchi
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | | | | | | | - Wilker Caetano
- Department of Chemistry, State University of Maringa, Maringa, Brazil
| | | | - Fernanda Fogagnoli Simas
- Laboratory of Inflammatory and Neoplastic Cells, Cell Biology Department, Section of Biological Sciences, Federal University of Parana, Curitiba, Brazil
| | | | - Marcos Luciano Bruschi
- Laboratory of Research and Development of Drug Delivery Systems, Postgraduate Program in Pharmaceutical Sciences, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil.
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5
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Vagenas D, Pispas S. Triple Hydrophilic Statistical Terpolymers via RAFT Polymerization: Synthesis and Properties in Aqueous Solutions. Polymers (Basel) 2023; 15:polym15112492. [PMID: 37299291 DOI: 10.3390/polym15112492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/23/2023] [Accepted: 05/26/2023] [Indexed: 06/12/2023] Open
Abstract
In this work, we report the synthesis of novel triple hydrophilic statistical terpolymers consisting of three different methacrylate monomers with varying degrees of responsivity to solution conditions. Terpolymers of the type poly(di(ethylene glycol) methyl ether methacrylate-co-2-(dimethylamino)ethylmethacrylate-co-oligoethylene glycol methyl ether methacrylate), P(DEGMA-co-DMAEMA-co-OEGMA), and of different compositions, were prepared by using the RAFT methodology. Their molecular characterization was carried out using size exclusion chromatography (SEC) and spectroscopic techniques, including 1H-NMR and ATR-FTIR. Studies in dilute aqueous media by dynamic and electrophoretic light scattering (DLS and ELS) show their potential responsiveness regarding changes in temperature, pH, and kosmotropic salt concentration. Finally, the change in hydrophilic/hydrophobic balance of the formed terpolymer nanoparticles during heating and cooling was studied using fluorescence spectroscopy (FS) in conjunction with pyrene giving additional information on the responsiveness and internal structure of the self-assembled nanoaggregates.
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Affiliation(s)
- Dimitrios Vagenas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Ave., 11635 Athens, Greece
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6
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Li Q, Wang L, Chen F, Constantinou AP, Georgiou TK. Thermoresponsive oligo(ethylene glycol) methyl ether methacrylate based copolymers: composition and comonomer effect. Polym Chem 2022. [DOI: 10.1039/d1py01688a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Thermoresponsive polymers based on oligo(ethylene glycol) (OEG) methyl ether methacrylate monomers from unimers to micelles to precipitation.
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Affiliation(s)
- Qian Li
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
| | - Lezhi Wang
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
| | - Feihong Chen
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
| | - Anna P. Constantinou
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
| | - Theoni K. Georgiou
- Department of Materials, Imperial College London, Royal School of Mines, Exhibition Road, SW7 2AZ, London, UK
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7
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Geyik G, Işıklan N. pH
/temperature‐responsive poly(dimethylaminoethyl methacrylate) grafted κ‐carrageenan copolymer: Synthesis and physicochemical properties. J Appl Polym Sci 2020. [DOI: 10.1002/app.49596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Gülcan Geyik
- Alaca Avni Çelik Vocational School Hitit University Çorum Turkey
- Department of Chemistry, Faculty of Arts and Sciences Kırıkkale University Kırıkkale Turkey
| | - Nuran Işıklan
- Department of Chemistry, Faculty of Arts and Sciences Kırıkkale University Kırıkkale Turkey
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8
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da Silva JB, Dos Santos RS, da Silva MB, Braga G, Cook MT, Bruschi ML. Interaction between mucoadhesive cellulose derivatives and Pluronic F127: Investigation on the micelle structure and mucoadhesive performance. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111643. [PMID: 33321681 DOI: 10.1016/j.msec.2020.111643] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/15/2020] [Accepted: 10/15/2020] [Indexed: 01/10/2023]
Abstract
Systems composed of bioadhesive and thermoresponsive polymers can combine in situ gelation with bio/mucoadhesion, enhancing retention of topically applied drugs. The effect of bioadhesive sodium carboxymethylcellulose (NaCMC) and hydroxypropyl methylcellulose cellulose (HPMC) on the properties of thermoresponsive Pluronic® F127 (F127) was explored, including micellization and the mucoadhesion. A computational analysis between these polymers and their molecular interactions were also studied, rationalising the design of improved binary polymeric systems for pharmaceutical and biomedical applications. The morphological characterization of polymeric systems was conducted by SEM. DSC analysis was used to investigate the crystallization and micellization enthalpy of F127 and the mixed systems. Micelle size measurements and TEM micrographs allowed for investigation into the interference of cellulose derivatives on F127 micellization. Both cellulose derivatives reduced the critical micellar concentration and enthalpy of micellization of F127, altering hydrodynamic diameters of the aggregates. Mucoadhesion performance was useful to select the best systems for mucosal application. The systems composed of 17.5% (w/w) F127 and 3% (w/w) HPMC or 1% (w/w) NaCMC are promising as topical drug delivery systems, mainly on mucosal surfaces. They were biocompatible when tested against Artemia salina, and also able to release a model of hydrophilic drug in a controlled manner.
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Affiliation(s)
- Jéssica Bassi da Silva
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | - Rafaela Said Dos Santos
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil
| | | | - Gustavo Braga
- Department of Chemistry, State University of Maringa, Maringa, Brazil
| | - Michael Thomas Cook
- Research Centre in Topical Drug Delivery and Toxicology, School of Life and Medical Sciences, University of Hertfordshire, Hatfield AL10 9AB, United Kingdom
| | - Marcos Luciano Bruschi
- Postgraduate Program in Pharmaceutical Sciences, Laboratory of Research and Development of Drug Delivery Systems, Department of Pharmacy, State University of Maringa, Maringa, PR, Brazil.
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9
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Selianitis D, Pispas S. PDEGMA‐b‐PDIPAEMA
copolymers via
RAFT
polymerization and their
pH
and thermoresponsive schizophrenic self‐assembly in aqueous media. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200266] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Dimitrios Selianitis
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation Athens Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation Athens Greece
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10
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Geyik G, Işıklan N. Synthesis, characterization and swelling performance of a temperature/pH-sensitive κ-carrageenan graft copolymer. Int J Biol Macromol 2020; 152:359-370. [DOI: 10.1016/j.ijbiomac.2020.02.129] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 02/06/2020] [Accepted: 02/12/2020] [Indexed: 11/27/2022]
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11
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Thermoresponsive systems composed of poloxamer 407 and HPMC or NaCMC: mechanical, rheological and sol-gel transition analysis. Carbohydr Polym 2020; 240:116268. [PMID: 32475558 DOI: 10.1016/j.carbpol.2020.116268] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/01/2020] [Accepted: 04/07/2020] [Indexed: 12/19/2022]
Abstract
Poloxamer 407 (polox407) is widely studied as thermogelling polymer, transitioning to a gel state when warmed Polox407 forms weak hydrogels with rapid dissolution in excess solvent. This study reports the development of binary systems composed of polox407 and hydroxypropyl methylcellulose (HPMC) or sodium carboxymethylcellulose (NaCMC) aiming to improve the rheological and mechanical properties of the hydrogel. The interaction between polox407 and cellulose derivatives was studied, and their interaction with biological surfaces predicted. The carbohydrates affected the mechanical and rheological behavior of polox407 in different ways, dependent on polymer type, concentration, and temperature. Tsol/gel and rheological interaction parameters were useful to select the most suitable formulations for topical or local application. Most of the binary systems exhibited plastic behavior, thixotropy and viscoelastic properties. Appropriate formulations were identified for local application, such as 17.5/3; 17.5/4; 20/3 and 20/4 (%, w/w) for polox407/HPMC; and 17.5/1; 17.5/1.5; 20/1 and 20/1.5 (%, w/w) for polox407/NaCMC.
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12
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Quan J, Shen FW, Cai H, Zhang YN, Wu H. Galactose-Functionalized Double-Hydrophilic Block Glycopolymers and Their Thermoresponsive Self-Assembly Dynamics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:10721-10731. [PMID: 30113172 DOI: 10.1021/acs.langmuir.8b01516] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Glycopolymers with large galactose units are attractive in biological processes because of their ability to selectively recognize lectin proteins. Recently, thermoresponsive double-hydrophilic block glycopolymers (TDHBGs) have been designed, which allow sugar residues to expose or hide via the lower critical solution temperature (LCST)-type phase transition. In this work, we first synthesize a new type of TDHBGs, composed of a thermoresponsive poly(di(ethylene glycol)methyl ether methacrylate) block and a galactose-functionalized, poly(6- O-vinyladipoyl-d-galactose) (POVNG) block. The LCST can be tuned by varying the size of the POVNG block. Then, we have systematically investigated their thermoresponsive self-assembly behavior, using static and dynamic light scattering techniques, combined with transmission electron microscopy (TEM) imaging. It is found that the TDHBGs possess both micellization and LCST-type transition, and there exist strong interactions between them, depending on the concentration and structure of the TDHBGs. It is particularly interesting that for the same type of TDHBGs under different conditions, such interactions result in rich morphologies of the formed micelles (or nanoparticles) such as spheres, hollow spheres, prolate ellipsoids, crystal-like, and so on, thus potentially enriching their biological applications by noting that they are hepatoma-targeting glycopolymers.
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Affiliation(s)
- Jing Quan
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, and College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
| | - Fa-Wei Shen
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, and College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
| | - Hao Cai
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, and College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
| | - Yi-Na Zhang
- Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, and College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , P. R. China
| | - Hua Wu
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences , ETH Zurich , 8093 Zurich , Switzerland
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13
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Zong W, Thingholm B, Itel F, Schattling PS, Brodszkij E, Mayer D, Stenger S, Goldie KN, Han X, Städler B. Phospholipid-Block Copolymer Hybrid Vesicles with Lysosomal Escape Ability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6874-6886. [PMID: 29776311 DOI: 10.1021/acs.langmuir.8b01073] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The success of nanoparticulate formulations in drug delivery depends on various aspects including their toxicity, internalization, and intracellular location. Vesicular assemblies consisting of phospholipids and amphiphilic block copolymers are an emerging platform, which combines the benefits from liposomes and polymersomes while overcoming their challenges. We report the synthesis of poly(cholesteryl methacrylate)- block-poly(2-(dimethylamino) ethyl methacrylate) (pCMA- b-pDMAEMA) block copolymers and their assembly with phospholipids into hybrid vesicles. Their geometry, their ζ-potential, and their ability to adsorb onto polymer-coated surfaces were assessed. Giant unilamellar vesicles were employed to confirm the presence of both the phospholipids and the block copolymer in the same membrane. Furthermore, the cytotoxicity of selected hybrid vesicles was determined in RAW 264.7 mouse macrophages, primary rat Kupffer cells, and human macrophages. The internalization and lysosomal escape ability of the hybrid vesicles were confirmed using RAW 264.7 mouse macrophages. Taken together, our findings illustrate that the reported hybrid vesicles are a promising complementary drug delivery platform for existing liposomes and polymersomes.
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Affiliation(s)
- Wei Zong
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , 92 West Da-Zhi Street , Harbin 150001 , China
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Bo Thingholm
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Fabian Itel
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Philipp S Schattling
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Edit Brodszkij
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Daniel Mayer
- Institute for Medical Microbiology and Infection Control , University Hospital Ulm , 89021 Ulm , Germany
| | - Steffen Stenger
- Institute for Medical Microbiology and Infection Control , University Hospital Ulm , 89021 Ulm , Germany
| | - Kenneth N Goldie
- Center for Cellular Imaging & Nano Analytics, Biozentrum , University of Basel , 4056 Basel , Switzerland
| | - Xiaojun Han
- State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering , Harbin Institute of Technology , 92 West Da-Zhi Street , Harbin 150001 , China
| | - Brigitte Städler
- Interdisciplinary Nanoscience Center (iNANO) , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
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14
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Weaver LG, Stockmann R, Thang SH, Postma A. Temperature-responsive methacrylamide polyampholytes. RSC Adv 2017. [DOI: 10.1039/c7ra04723a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The effective modulation of polymer cloud points in water is demonstrated through a series of charged, temperature-responsive methacrylamide-based polyampholytes.
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Affiliation(s)
| | | | - San H. Thang
- CSIRO Manufacturing
- Australia
- Monash University School of Chemistry
- Clayton Campus
- VIC 3800
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