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Glaive AS, Cœur CL, Guigner JM, Amiel C, Volet G. Amphiphilic Heterograft Copolymers Bearing Biocompatible/Biodegradable Grafts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:2050-2063. [PMID: 38243903 DOI: 10.1021/acs.langmuir.3c02772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Abstract
The amphiphilic heterograft copolymers bearing biocompatible/biodegradable grafts [poly(2-methyl-2-oxazoline-co-2-pentyl-2-oxazoline)-g-poly(d-l-lactic acid)/poly(2-ethyl-2-oxazoline)] were synthesized successfully by the combination of cationic ring-opening polymerization and click chemistry via the ⟨"grafting to"⟩ approach. The challenge of this synthesis was to graft together hydrophobic and hydrophilic chains on a hydrophilic platform based on PMeOx. The efficiency of grafting depends on the chemical nature of the grafts and of the length of the macromolecular chains. The self-assembly of these polymers in aqueous media was investigated by DLS, cryo-TEM, and SANS. The results demonstrated that different morphologies were obtained from nanospheres and vesicles to filaments depending on the hydrophilic weight ratio in the heterograft copolymer varying from 0.38 until 0.84. As poly(2-ethyl-2-oxazoline) is known to be thermoresponsive, the influence of temperature rise on the nanoassembly stability was studied in water and in a physiological medium. SANS and DLS measurements during a temperature ramp allowed to show that nanoassemblies start to self-assemble in "raspberry like" primary structures at 50 °C, and these structures grow and get denser as the temperature is increased further. These amphiphilic heterograft copolymers may include hydrophobic drugs and should find important applications for biomedical applications which require stealth properties.
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Affiliation(s)
- Aline-Sarah Glaive
- Univ Paris Est Creteil, CNRS, ICMPE, UMR 7182, 2 rue Henri Dunant, Thiais 94320, France
| | - Clémence Le Cœur
- Univ Paris Est Creteil, CNRS, ICMPE, UMR 7182, 2 rue Henri Dunant, Thiais 94320, France
- Laboratoire Léon Brillouin, Université Paris-Saclay, CEA-CNRS UMR CEA Saclay, Gif sur Yvette 91191, France
| | - Jean-Michel Guigner
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, IRD, CNRS UMR7590, MNHN; 4 place Jussieu, Paris 75252, France
| | - Catherine Amiel
- Univ Paris Est Creteil, CNRS, ICMPE, UMR 7182, 2 rue Henri Dunant, Thiais 94320, France
| | - Gisèle Volet
- Univ Paris Est Creteil, CNRS, ICMPE, UMR 7182, 2 rue Henri Dunant, Thiais 94320, France
- Université d'Evry Val d'Essonne, Rue du Père Jarlan, Evry cedex 91025, France
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Drain BA, Becer RC. Hydrolysis of hydrophobic poly(2-oxazoline)s and their subsequent modification via aza-Michael addition. Des Monomers Polym 2023; 26:214-222. [PMID: 37840642 PMCID: PMC10569348 DOI: 10.1080/15685551.2023.2267232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/02/2023] [Indexed: 10/17/2023] Open
Abstract
Partially hydrolysed poly(2-oxazoline)s possess unique properties. However, much of the focus in this area has been on water soluble poly(2-oxazoline)s. Where hydrophobic poly(2-oxazoline)s have been used, this is often for selective hydrolysis. However, hydrolysis of very hydrophobic polymers could lead to interesting solution behaviour. Herein, we describe universal conditions for the hydrolysis of poly(2-alkyl-2-oxazoline)s suitable for both hydrophobic and hydrophilic 2-oxazolines. We show that the system utilised gives comparable rates to that of water alone for poly(2-ethyl-2-oxazoline). In addition, poly(2-fatty acid-2-oxazoline) was hydrolysed using the developed system and was found to proceed in a controlled manner allowing the targeting of specific degrees of hydrolysis, albeit much slower than for poly(2-ethyl-2-oxazoline). Finally, we demonstrate the partial functionalisation of poly(2-oxazoline)-poly(ethylene imine) co-polymers via aza-Michael addition.
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Affiliation(s)
- Ben A. Drain
- Department of Chemistry, University of Warwick, Coventry, UK
- School of Engineering and Materials Science, Queen Mary University of London, London, UK
| | - Remzi C. Becer
- Department of Chemistry, University of Warwick, Coventry, UK
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3
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Loose Semirigid Aromatic Polyester Bottle Brushes at Poly(2-isopropyl-2-oxazoline) Side Chains of Various Lengths: Behavior in Solutions and Thermoresponsiveness. Polymers (Basel) 2022; 14:polym14245354. [PMID: 36559721 PMCID: PMC9781464 DOI: 10.3390/polym14245354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 11/25/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022] Open
Abstract
A polycondensation aromatic polyester with an oxygen spacer was synthesized and used as a macroinitiator for the grafting of linear poly(2-isopropyl-2-oxazoline) (PiPrOx) by the cationic polymerization method. The length of the thermosensitive side chains was varied by the initiator:monomer ratio. Using methods of molecular hydrodynamics, light scattering and turbidimetry, the copolymers were studied in organic solvents and in water. The molecular characteristics of the main chain and graft copolymers, the polymerization degree of side chains and their grafting density have been determined. The equilibrium rigidity of the macroinitiator and the conformations of grafted macromolecules were evaluated. In selective solvents, they take on a star-like conformation or aggregate depending on the degree of shielding of the main chain by side chains. The thermoresponsiveness of graft copolymers in aqueous solutions was studied, and their LCST were estimated. The results are compared with data for graft copolymers composed of PiPrOx side chains and flexible or rigid chain backbones of aromatic polyester type.
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Polyoxazoline: A review article from polymerization to smart behaviors and biomedical applications. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111484] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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5
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Kirila TY, Razina AB, Ten’kovtsev AV, Filippov AP. Effect of the Structure of Arms and Way of Their Attachment to Calix[4]arene on Self-Assembly Processes in Aqueous Solutions of Thermoresponsive Star-Shaped Poly(2-alkyl-2-oxazolines) and Poly(2-alkyl-2-oxazines). POLYMER SCIENCE SERIES C 2022. [DOI: 10.1134/s1811238222700102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Lin M, Wang M, Liu D, Zuckermann RN, Sun J. Nanoscale Polyelectrolyte Complex Vesicles from Bioinspired Peptidomimetic Homopolymers with Zwitterionic Property and Extreme Stability. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Min Lin
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
| | - Meiyao Wang
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Dandan Liu
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
| | - Ronald N. Zuckermann
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jing Sun
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin 130012, China
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7
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Gao YZ, Li A, Chen JC, Cui Z, Wu YX. Quaternized Sodium Alginate- g-Ethyl-Oxazoline Copolymer Brushes and Their Supramolecular Networks via Hydrogen Bonding. ACS Biomater Sci Eng 2022; 8:3424-3437. [PMID: 35878006 DOI: 10.1021/acsbiomaterials.2c00436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Novel copolymer brushes of quaternized sodium alginate-g-(2-ethyl-2-oxazoline)n are achieved by the grafting reaction of 2-ethyl-2-oxazoline (EOX) from benzyl bromide groups in quaternized sodium alginate (QSA). The average number of (EOX)n structural units is mediated from 1 to 5 by changing the molar ratio of the EOX monomer to benzyl bromide side groups. There exists obvious microphase separation between the QSA backbone and (EOX)n segments in the copolymer brushes due to their thermodynamic incompatibility. The strong hydrogen-bonding interaction between -OH groups in the backbone and N─C═O groups in (EOX)n segments is helpful for the construction of reversible supramolecular networks. The copolymer brushes show low cytotoxicity for HeLa cells and good antibacterial properties for Escherichia coli and Staphylococcus aureus for the contribution of hydrophilic (EOX)n segments and antibacterial activity of the quaternary ammonium. The antiprotein behavior of polymer surfaces is improved after rearrangement of (EOX)n segments by tetrahydrofuran (THF) vapor induction. These copolymer brushes have good prospects for biomedical applications.
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Affiliation(s)
- Yu-Zhuang Gao
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
| | - Ang Li
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
| | - Jun-Cai Chen
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
| | - Zhe Cui
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
| | - Yi-Xian Wu
- State Key Laboratory of Chemical Resource Engineering, College of Material Science and Engineering, Beijing University of Chemical Technology, 15 North 3th-Ring East Road, Chaoyang District, Beijing 100029, China
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8
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Smirnova AV, Tenkovtsev AV, Filippov AP. Effect of Annealing at High Temperatures on the Morphology of Aqueous Solutions of Star-Shaped Poly(2-Isopropyl-2-Oxazoline) and Linear Poly(2-Ethyl-5,6-Dihydrooxazine). POLYMER SCIENCE SERIES C 2022. [DOI: 10.1134/s1811238222700072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Jana S, Hoogenboom R. Poly(2‐oxazoline)s: A comprehensive overview of polymer structures and their physical properties – An update. POLYM INT 2022. [DOI: 10.1002/pi.6426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Somdeb Jana
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry Ghent University, Krijgslaan 281‐S4 9000 Ghent Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry Ghent University, Krijgslaan 281‐S4 9000 Ghent Belgium
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10
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Beudert M, Hahn L, Horn AHC, Hauptstein N, Sticht H, Meinel L, Luxenhofer R, Gutmann M, Lühmann T. Merging bioresponsive release of insulin-like growth factor I with 3D printable thermogelling hydrogels. J Control Release 2022; 347:115-126. [PMID: 35489547 DOI: 10.1016/j.jconrel.2022.04.028] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/31/2022] [Accepted: 04/16/2022] [Indexed: 11/15/2022]
Abstract
3D printing of biomaterials enables spatial control of drug incorporation during automated manufacturing. This study links bioresponsive release of the anabolic biologic, insulin-like growth factor-I (IGF-I) in response to matrix metalloproteinases (MMP) to 3D printing using the block copolymer of poly(2-methyl-2-oxazoline) and thermoresponsive poly(2-n-propyl-2-oxazine) (POx-b-POzi). For that, a chemo-enzymatic synthesis was deployed, ligating IGF-I enzymatically to a protease sensitive linker (PSL), which was conjugated to a POx-b-POzi copolymer. The product was blended with the plain thermogelling POx-b-POzi hydrogel. MMP exposure of the resulting hydrogel triggered bioactive IGF-I release. The bioresponsive IGF-I containing POx-b-POzi hydrogel system was further detailed for shape control and localized incorporation of IGF-I via extrusion 3D printing for future applications in biomedicine and biofabrication.
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Affiliation(s)
- Matthias Beudert
- University of Würzburg, Institute for Pharmacy and Food Chemistry, 97074 Würzburg, Germany
| | - Lukas Hahn
- University of Würzburg, Institute for Pharmacy and Food Chemistry, 97074 Würzburg, Germany; Functional Polymer Materials, Chair for Advanced Materials Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany
| | - Anselm H C Horn
- Bioinformatics, Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Fahrstraße 17, 91054 Erlangen, Germany; Erlangen National High Performance Computing Center (NHR@FAU), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 1, 91058 Erlangen, Germany
| | - Niklas Hauptstein
- University of Würzburg, Institute for Pharmacy and Food Chemistry, 97074 Würzburg, Germany
| | - Heinrich Sticht
- Bioinformatics, Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg, Fahrstraße 17, 91054 Erlangen, Germany; Erlangen National High Performance Computing Center (NHR@FAU), Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstraße 1, 91058 Erlangen, Germany
| | - Lorenz Meinel
- University of Würzburg, Institute for Pharmacy and Food Chemistry, 97074 Würzburg, Germany; Helmholtz Institute for RNA-based Infection Research, Josef-Schneider-Straße 2, DE-97080 Würzburg, Germany
| | - Robert Luxenhofer
- Functional Polymer Materials, Chair for Advanced Materials Synthesis, Institute for Functional Materials and Biofabrication, Department of Chemistry and Pharmacy, Julius-Maximilians-University Würzburg, Röntgenring 11, 97070 Würzburg, Germany; Soft Matter Chemistry, Department of Chemistry and Helsinki Institute of Sustainability Science, Faculty of Science, University of Helsinki, P.O. Box 55, 00014 Helsinki, Finland
| | - Marcus Gutmann
- University of Würzburg, Institute for Pharmacy and Food Chemistry, 97074 Würzburg, Germany.
| | - Tessa Lühmann
- University of Würzburg, Institute for Pharmacy and Food Chemistry, 97074 Würzburg, Germany.
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11
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Sedlacek O, Bardoula V, Vuorimaa-Laukkanen E, Gedda L, Edwards K, Radulescu A, Mun GA, Guo Y, Zhou J, Zhang H, Nardello-Rataj V, Filippov S, Hoogenboom R. Influence of Chain Length of Gradient and Block Copoly(2-oxazoline)s on Self-Assembly and Drug Encapsulation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106251. [PMID: 35212458 DOI: 10.1002/smll.202106251] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 12/24/2021] [Indexed: 06/14/2023]
Abstract
Amphiphilic gradient copolymers represent a promising alternative to extensively used block copolymers due to their facile one-step synthesis by statistical copolymerization of monomers of different reactivity. Herein, an in-depth analysis is provided of micelles based on amphiphilic gradient poly(2-oxazoline)s with different chain lengths to evaluate their potential for micellar drug delivery systems and compare them to the analogous diblock copolymer micelles. Size, morphology, and stability of self-assembled nanoparticles, loading of hydrophobic drug curcumin, as well as cytotoxicities of the prepared nanoformulations are examined using copoly(2-oxazoline)s with varying chain lengths and comonomer ratios. In addition to several interesting differences between the two copolymer architecture classes, such as more compact self-assembled structures with faster exchange dynamics for the gradient copolymers, it is concluded that gradient copolymers provide stable curcumin nanoformulations with comparable drug loadings to block copolymer systems and benefit from more straightforward copolymer synthesis. The study demonstrates the potential of amphiphilic gradient copolymers as a versatile platform for the synthesis of new polymer therapeutics.
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Affiliation(s)
- Ondrej Sedlacek
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, B-9000, Belgium
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova, 2030, Prague 2, 128 40, Czech Republic
| | - Valentin Bardoula
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, B-9000, Belgium
- Centrale Lille, Université de Lille, CNRS, Université Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, Lille, F-59000, France
| | | | - Lars Gedda
- Department of Chemistry -Ångström Laboratory, Uppsala University, Lägerhyddsvägen 1, Uppsala, Sweden
| | - Katarina Edwards
- Department of Chemistry -Ångström Laboratory, Uppsala University, Lägerhyddsvägen 1, Uppsala, Sweden
| | - Aurel Radulescu
- Jülich Centre for Neutron Science (JCNS) at Heinz Maier-Leibnitz Zentrum (MLZ) Forschungszentrum Jülich GmbH, Lichtenbergstr. 1, 85748, Garching, Germany
| | - Grigoriy A Mun
- Department of Chemistry & Technology of Organic Materials, Polymers and Natural Compounds, al Faraby Kazakh National University, 71, al-Faraby av., Almaty, 050040, Republic of Kazakhstan
| | - Yong Guo
- Department of Endocrinology, Key Laboratory of National Health & Family Planning Commission for Male Reproductive Health, National Research Institute for Family Planning, Beijing, 100081, China
- Pharmaceutical Sciences Laboratory and Turku Bioscience Center, of Åbo Akademi University and Turku Bioscience, Turku, 20520, Finland
| | - Junnian Zhou
- Pharmaceutical Sciences Laboratory and Turku Bioscience Center, of Åbo Akademi University and Turku Bioscience, Turku, 20520, Finland
- Experimental Hematology and Biochemistry Lab, Beijing Institute of Radiation Medicine, Beijing, 100850, China
| | - Hongbo Zhang
- Pharmaceutical Sciences Laboratory and Turku Bioscience Center, of Åbo Akademi University and Turku Bioscience, Turku, 20520, Finland
| | - Véronique Nardello-Rataj
- Centrale Lille, Université de Lille, CNRS, Université Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, Lille, F-59000, France
| | - Sergey Filippov
- Department of Chemistry & Technology of Organic Materials, Polymers and Natural Compounds, al Faraby Kazakh National University, 71, al-Faraby av., Almaty, 050040, Republic of Kazakhstan
- School of Pharmacy, University of Reading, Whiteknights, Reading, RG6 6DX, UK
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, B-9000, Belgium
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12
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Hayes G, Drain B, Becer CR. Multiarm Core Cross-Linked Star-Shaped Poly(2-oxazoline)s Using a Bisfunctional 2-Oxazoline Monomer. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c02245] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Graham Hayes
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - Ben Drain
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK
| | - C. Remzi Becer
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
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Kalinova R, Valchanova M, Dimitrov I, Turmanova S, Ugrinova I, Petrova M, Vlahova Z, Rangelov S. Functional Polyglycidol-Based Block Copolymers for DNA Complexation. Int J Mol Sci 2021; 22:9606. [PMID: 34502513 PMCID: PMC8431755 DOI: 10.3390/ijms22179606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 01/04/2023] Open
Abstract
Gene therapy is an attractive therapeutic method for the treatment of genetic disorders for which the efficient delivery of nucleic acids into a target cell is critical. The present study is aimed at evaluating the potential of copolymers based on linear polyglycidol to act as carriers of nucleic acids. Functional copolymers with linear polyglycidol as a non-ionic hydrophilic block and a second block bearing amine hydrochloride pendant groups were prepared using previously synthesized poly(allyl glycidyl ether)-b-polyglycidol block copolymers as precursors. The amine functionalities were introduced via highly efficient radical addition of 2-aminoethanethiol hydrochloride to the alkene side groups. The modified copolymers formed loose aggregates with strongly positive surface charge in aqueous media, stabilized by the presence of dodecyl residues at the end of the copolymer structures and the hydrogen-bonding interactions in polyglycidol segments. The copolymer aggregates were able to condense DNA into stable and compact nanosized polyplex particles through electrostatic interactions. The copolymers and the corresponding polyplexes showed low to moderate cytotoxicity on a panel of human cancer cell lines. The cell internalization evaluation demonstrated the capability of the polyplexes to successfully deliver DNA into the cancer cells.
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Affiliation(s)
- Radostina Kalinova
- Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Miroslava Valchanova
- Department of Material Science and Technology, University “Prof. Assen Zlatarov”, 8010 Burgas, Bulgaria; (M.V.); (S.T.)
| | - Ivaylo Dimitrov
- Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Sevdalina Turmanova
- Department of Material Science and Technology, University “Prof. Assen Zlatarov”, 8010 Burgas, Bulgaria; (M.V.); (S.T.)
| | - Iva Ugrinova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.P.); (Z.V.)
| | - Maria Petrova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.P.); (Z.V.)
| | - Zlatina Vlahova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.P.); (Z.V.)
| | - Stanislav Rangelov
- Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
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14
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Yadav R, Kahlon NK, Kumar S, Devunuri N, Venkatesu P. Biophysical study on the phase transition behaviour of biocompatible thermoresponsive polymer influenced by tryptophan-based amino acid ionic liquids. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Drain BA, Beyer VP, Cattoz B, Becer CR. Solvent Dependency in the Synthesis of Multiblock and Cyclic Poly(2-oxazoline)s. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00529] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- B. A. Drain
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, U.K
| | - V. P. Beyer
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
- School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, U.K
| | - B. Cattoz
- Infineum UK Ltd, Milton Hill, Didcot OX13 6BD, U.K
| | - C. R. Becer
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
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16
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Xu M, Yao C, Zhang W, Gao S, Zou H, Gao J. Anti-Cancer Activity Based on the High Docetaxel Loaded Poly(2-Oxazoline)s Micelles. Int J Nanomedicine 2021; 16:2735-2749. [PMID: 33859475 PMCID: PMC8043799 DOI: 10.2147/ijn.s298093] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/18/2021] [Indexed: 02/06/2023] Open
Abstract
PURPOSE Nanocarriers, with a high drug loading content and good safety, to achieve desirable therapeutic effect are always the goals for industry and research. METHODS AND RESULTS In the present study, we developed a docetaxel loaded poly-2-oxazoline polymer micellar system which employed poly-2-butyl-2 oxazoline and poly-2-methyl-2 oxazoline as the hydrophobic chain and hydrophilic chain, respectively. This micellar system achieves a high load up to 25% against the docetaxel, and further demonstrates an IC50 as low as 40% of the commercialized docetaxel injection in vitro and a double maximum tolerated dose in MCF-7 cells in vivo. CONCLUSION The high drug loading content, superior safety, and considerable anti-cancer activity make this newly developed docetaxel loaded poly(2-oxazoline) micelle go further in future clinical research.
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Affiliation(s)
- Min Xu
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, People's Republic of China
- Department of Pharmacy, Changzheng Hospital, Shanghai, 200003, People's Republic of China
| | - Chong Yao
- Clinical Pharmacy Center, Department of Pharmacy, Chinese PLA General Hospital, Beijing, 100850, People's Republic of China
| | - Wei Zhang
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, People's Republic of China
| | - Shen Gao
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, People's Republic of China
| | - Hao Zou
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, People's Republic of China
| | - Jing Gao
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, People's Republic of China
- State Key Laboratory of Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, People's Republic of China
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Kirila T, Smirnova A, Razina A, Tenkovtsev A, Filippov A. Influence of Salt on the Self-Organization in Solutions of Star-Shaped Poly-2-alkyl-2-oxazoline and Poly-2-alkyl-2-oxazine on Heating. Polymers (Basel) 2021; 13:1152. [PMID: 33916516 PMCID: PMC8038499 DOI: 10.3390/polym13071152] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/30/2021] [Accepted: 04/01/2021] [Indexed: 11/24/2022] Open
Abstract
The water-salt solutions of star-shaped six-arm poly-2-alkyl-2-oxazines and poly-2-alkyl-2-oxazolines were studied by light scattering and turbidimetry. The core was hexaaza[26]orthoparacyclophane and the arms were poly-2-ethyl-2-oxazine, poly-2-isopropyl-2-oxazine, poly-2-ethyl-2-oxazoline, and poly-2-isopropyl-2-oxazoline. NaCl and N-methylpyridinium p-toluenesulfonate were used as salts. Their concentration varied from 0-0.154 M. On heating, a phase transition was observed in all studied solutions. It was found that the effect of salt on the thermosensitivity of the investigated stars depends on the structure of the salt and polymer and on the salt content in the solution. The phase separation temperature decreased with an increase in the hydrophobicity of the polymers, which is caused by both a growth of the side radical size and an elongation of the monomer unit. For NaCl solutions, the phase separation temperature monotonically decreased with growth of salt concentration. In solutions with methylpyridinium p-toluenesulfonate, the dependence of the phase separation temperature on the salt concentration was non-monotonic with minimum at salt concentration corresponding to one salt molecule per one arm of a polymer star. Poly-2-alkyl-2-oxazine and poly-2-alkyl-2-oxazoline stars with a hexaaza[26]orthoparacyclophane core are more sensitive to the presence of salt in solution than the similar stars with a calix[n]arene branching center.
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Affiliation(s)
- Tatyana Kirila
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy Pr. 31, 199004 Saint Petersburg, Russia; (A.S.); (A.R.); (A.T.); (A.F.)
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18
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Drozdov AD. Equilibrium Swelling of Biocompatible Thermo-Responsive Copolymer Gels. Gels 2021; 7:40. [PMID: 33916014 PMCID: PMC8167660 DOI: 10.3390/gels7020040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/09/2021] [Accepted: 03/19/2021] [Indexed: 01/17/2023] Open
Abstract
Biomedical applications of thermo-responsive (TR) hydrogels require these materials to be biocompatible, non-cytotoxic, and non-immunogenic. Due to serious concerns regarding potential toxicity of poly(N-isopropylacrylamide) (PNIPAm), design of alternative homo- and copolymer gels with controllable swelling properties has recently become a hot topic. This study focuses on equilibrium swelling of five potential candidates to replace PNIPAm in biomedical and biotechnological applications: poly(N-vinylcaprolactam), poly(vinyl methyl ether), poly(N,N-dimethyl amino ethyl methacrylate), and two families of poly(2-oxazoline)s, and poly(oligo(ethylene glycol) methacrylates). To evaluate their water uptake properties and to compare them with those of substituted acrylamide gels, a unified model is developed for equilibrium swelling of TR copolymer gels with various types of swelling diagrams. Depending on the strength of hydrophobic interactions (high, intermediate, and low), the (co)polymers under consideration are split into three groups that reveal different responses at and above the volume phase transition temperature.
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Affiliation(s)
- Aleksey D Drozdov
- Department of Materials and Production, Aalborg University, Fibigerstraede 16, 9220 Aalborg, Denmark
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19
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Hou Z, Nau WM, Hoogenboom R. Reversible covalent locking of a supramolecular hydrogel via UV-controlled anthracene dimerization. Polym Chem 2021. [DOI: 10.1039/d0py01283a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of supramolecular hydrogels is demonstrated based on ternary complexes between anthracene side-chain functionalized polymers and macrocyclic hosts. Photo-induced reversible dimerization enables switching between supramolecular and covalent hydrogels.
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Affiliation(s)
- Zhanyao Hou
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Gent
| | - Werner M. Nau
- Department of Life Sciences and Chemistry
- Jacobs University Bremen
- 28759 Bremen
- Germany
| | - Richard Hoogenboom
- Supramolecular Chemistry Group
- Centre of Macromolecular Chemistry (CMaC)
- Department of Organic and Macromolecular Chemistry
- Ghent University
- 9000 Gent
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20
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Rodchenko S, Amirova A, Kurlykin M, Tenkovtsev A, Milenin S, Filippov A. Amphiphilic Molecular Brushes with Regular Polydimethylsiloxane Backbone and Poly-2-isopropyl-2-oxazoline Side Chains. 2. Self-Organization in Aqueous Solutions on Heating. Polymers (Basel) 2020; 13:E31. [PMID: 33374766 PMCID: PMC7796000 DOI: 10.3390/polym13010031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/18/2020] [Accepted: 12/20/2020] [Indexed: 01/18/2023] Open
Abstract
The behavior of amphiphilic molecular brushes in aqueous solutions on heating was studied by light scattering and turbidimetry. The main chain of the graft copolymers was polydimethylsiloxane, and the side chains were thermosensitive poly-2-isopropyl-2-oxazoline. The studied samples differed in the length of the grafted chains (polymerization degrees were 14 and 30) and, accordingly, in the molar fraction of the hydrophobic backbone. The grafting density of both samples was 0.6. At low temperatures, macromolecules and aggregates, which formed due to the interaction of main chains, were observed in solutions. At moderate temperatures, heating solutions of the sample with short side chains led to aggregation due to dehydration of poly-2-isopropyl-2-oxazoline and the formation of intermolecular hydrogen bonds. In the case of the brush with long grafted chains, dehydration caused the formation of intramolecular hydrogen bonds and the compaction of molecules and aggregates. The lower critical solution temperature for solutions of the sample with long side chains was higher than LCST for the sample with short side chains. It was shown that the molar fraction of the hydrophobic component and the intramolecular density are the important factors determining the LCST behavior of amphiphilic molecular brushes in aqueous solutions.
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Affiliation(s)
- Serafim Rodchenko
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Alina Amirova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Mikhail Kurlykin
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Andrey Tenkovtsev
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
| | - Sergey Milenin
- Enikolopov Institute of Synthetic Polymeric Materials of the Russian Academy of Sciences, Profsoyuznaya, 70, 117393 Moscow, Russia;
| | - Alexander Filippov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoy pr., 31, 199004 Saint Petersburg, Russia; (A.A.); (M.K.); (A.T.); (A.F.)
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21
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Stimuli-Responsive Micelles with Detachable Poly(2-ethyl-2-oxazoline) Shell Based on Amphiphilic Polyurethane for Improved Intracellular Delivery of Doxorubicin. Polymers (Basel) 2020; 12:polym12112642. [PMID: 33182767 PMCID: PMC7696422 DOI: 10.3390/polym12112642] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 12/12/2022] Open
Abstract
Polyurethanes (PUs) have various biomedical applications including controlled drug delivery. However, the incompletely release of drug at tumor sites limits the efficiency of these drug loaded polyurethane micelles. Here we report a novel polymer poly(2-ethyl-2-oxazoline)-SS-polyurethane-SS-poly(2-ethyl-2-oxazoline) triblock polyurethane (PEtOz-PU(PTMCSS)-PEtOz). The hydrophilic pH-responsive poly(2-ethyl-2-oxazoline) was used as an end-block to introduce pH responsiveness, and the hydrophobic PU middle-block was easily synthesized by the reaction of poly (trimethylene carbonate) diol containing disulfide bonds (PTMC-SS-PTMC diol) and bis (2-isocyanatoethyl) disulfide (CDI). PEtOz-PU(PTMCSS)-PEtOz could self-assemble to form micelles (176 nm). The drug release profile of PEtOz-PU(PTMCSS)-PEtOz micelles loaded with Doxorubicin (DOX) was studied in the presence of acetate buffer (10 mM, pH 5.0) and 10 mM dithiothreitol (DTT). The results showed that under this environment, DOX-loaded polyurethane micelles could release DOX faster and more thoroughly, about 97% of the DOX was released from the DOX-loaded PEtOz-PU(PTMCSS)-PEtOz micelle. In addition, fluorescent microscopy and cell viability assays validated that the DOX-loaded polyurethane micelle strongly inhibits the growth of C6 cells, suggesting their potential as a new nanomedicine against cancer.
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22
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Haladjova E, Rangelov S, Tsvetanov C. Thermoresponsive Polyoxazolines as Vectors for Transfection of Nucleic Acids. Polymers (Basel) 2020; 12:polym12112609. [PMID: 33171983 PMCID: PMC7694630 DOI: 10.3390/polym12112609] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/01/2020] [Accepted: 11/03/2020] [Indexed: 01/05/2023] Open
Abstract
Poly(2-oxazoline)s (POx) are an attractive platform for the development of non-viral gene delivery systems. The combination of POx moieties, exhibiting excellent biocompatibility, with DNA-binding polyethyleneimine (PEI) moieties into a single copolymer chain is a promising approach to balance toxicity and transfection efficiency. The versatility of POx in terms of type of substituent, copolymer composition, degree of polymerization, degree of hydrolysis, and chain architecture, as well as the introduction of stimuli-responsive properties, provides opportunities to finely tune the copolymer characteristics and physicochemical properties of the polyplexes to increase the biological performance. An overview of the current state of research in the POx-PEI-based gene delivery systems focusing particularly on thermosensitive POx is presented in this paper.
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23
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Chountoulesi M, Perinelli DR, Forys A, Bonacucina G, Trzebicka B, Pispas S, Demetzos C. Liquid crystalline nanoparticles for drug delivery: The role of gradient and block copolymers on the morphology, internal organisation and release profile. Eur J Pharm Biopharm 2020; 158:21-34. [PMID: 33098976 DOI: 10.1016/j.ejpb.2020.08.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 08/07/2020] [Accepted: 08/09/2020] [Indexed: 12/23/2022]
Abstract
Amphiphilic polymers represent one of the main class of stabilizers for non-lamellar lyotropic liquid crystalline nanoparticles, being essential for their formation and stability. In the present study, poly(ethylene oxide)-block-poly(ε-caprolactone) (PEO-b-PCL) block copolymers and poly(2-methyl-2-oxazoline)-grad-poly(2-phenyl-2-oxazoline) (MPOx) gradient copolymers were incorporated as stabilizers in liquid crystalline nanoparticles prepared from glyceryl monooleate. The polymers were chosen according to their high biocompatibility and promising stealth properties, in order to develop safe and efficient drug delivery nanosystems. The physicochemical characteristics and fractal dimension of the resultant nanosystems were obtained from light scattering techniques, while their micropolarity and microfluidity from fluorescence spectroscopy. The effect of temperature, serum proteins and ionic strength on the physicochemical behavior was monitored. Their morphology was assessed by cryo-TEM, while their thermal behavior by microcalorimetry and high-resolution ultrasound spectroscopy. Their properties were dependent on the stabilizer chemistry and topology (block/gradient copolymer) and its concentration. Subsequently, resveratrol, as model hydrophobic drug, was loaded into the nanosystems, the entrapment efficiency was calculated and in vitro release studies were carried out, highlighting how the different stabilizer can differentiate the drug release profile. In conclusion, the proposed copolymers broaden the toolbox of polymeric stabilizers for the development of liquid crystalline nanoparticles intended for drug delivery applications.
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Affiliation(s)
- Maria Chountoulesi
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimioupolis Zografou, 15771 Athens, Greece
| | - Diego Romano Perinelli
- School of Pharmacy, Via Gentile III da Varano, University of Camerino, 62032 Camerino, Italy
| | - Aleksander Forys
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 ul. M. Curie-Skłodowskiej, Zabrze, Poland
| | - Giulia Bonacucina
- School of Pharmacy, Via Gentile III da Varano, University of Camerino, 62032 Camerino, Italy
| | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 ul. M. Curie-Skłodowskiej, Zabrze, Poland
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Costas Demetzos
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimioupolis Zografou, 15771 Athens, Greece.
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24
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Konefał R, Černoch P, Konefał M, Spěváček J. Temperature Behavior of Aqueous Solutions of Poly(2-oxazoline) Homopolymer and Block Copolymers Investigated by NMR Spectroscopy and Dynamic Light Scattering. Polymers (Basel) 2020; 12:E1879. [PMID: 32825475 PMCID: PMC7565327 DOI: 10.3390/polym12091879] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 11/16/2022] Open
Abstract
1H NMR methods in combination with dynamic light scattering were applied to study temperature behavior of poly(2-isopropyl-2-oxazoline) (PIPOx) homopolymer as well as PIPOx-b-poly(2-methyl-2-oxazoline) (PMeOx) and poly(2-ethyl-2-oxazoline) (PEtOx)-b-PMeOx diblock copolymers in aqueous solutions. 1H NMR spectra showed a different way of phase transition for the main and side chains in PIPOx-based solutions. Additionally, the phase transition is irreversible for PIPOx homopolymer and partially reversible for PIPOx-b-PMeOx copolymer. As revealed by NMR, the phase transition in PEtOx-based copolymers solutions exists despite the absence of solution turbidity. It is very broad, virtually independent of the copolymer composition and reversible with some hysteresis. Two types of water molecules were detected in solutions of the diblock copolymers above the phase transition-"free" with long and "bound" with short spin-spin relaxation times T2. NOESY spectra revealed information about conformational changes observed already in the pre-transition region of PIPOx-b-PMeOx copolymer solution.
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Affiliation(s)
- Rafał Konefał
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic; (P.Č.); (M.K.)
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25
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Oleszko-Torbus N, Mendrek B, Kowalczuk A, Utrata-Wesołek A, Dworak A, Wałach W. Selective Partial Hydrolysis of 2-isopropyl-2-oxazoline Copolymers towards Decreasing the Ability to Crystallize. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3403. [PMID: 32752250 PMCID: PMC7435452 DOI: 10.3390/ma13153403] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 02/07/2023]
Abstract
Poly(2-isopropyl-2-oxazoline) (PiPrOx) is readily prone to crystallization both in solid and from solutions. This feature is detrimental for certain applications. Here, we examine whether the presence of unsubstituted ethyleneimine (EI) units, a gradient distributed within a polymer chain composed of 2-isopropyl-2-oxazoline (iPrOx) and 2-methyl-2-oxazoline (MOx) units, decreases the ability to crystallize the copolymer and affects thermal properties compared to the homopolymer of iPrOx. We assumed that the separation of stiff iPrOx units by the more flexible EI will affect the spatial arrangements of the ordered chains, slightly plasticize and, as a result, decrease their ability to crystallize. The selective hydrolysis of gradient iPrOx and 2-methyl-2-oxazoline (MOx) copolymers, carried out under mild conditions, led to iPrOx/MOx/EI copolymers. To the best of our knowledge, the selective hydrolysis of these copolymers has never been carried out before. Their thermal properties and crystallization abilities, both in a solid state and from an aqueous solution, were analyzed. Based on the analysis of polymer charge and cytotoxicity studies, the potential use of the copolymers obtained was indicated in some biological systems.
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Affiliation(s)
- Natalia Oleszko-Torbus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (B.M.); (A.K.); (A.U.-W.); (A.D.); (W.W.)
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26
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Trinh Che L, Hiorth M, Hoogenboom R, Kjøniksen AL. Complex Temperature and Concentration Dependent Self-Assembly of Poly(2-oxazoline) Block Copolymers. Polymers (Basel) 2020; 12:polym12071495. [PMID: 32635506 PMCID: PMC7407653 DOI: 10.3390/polym12071495] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/24/2020] [Accepted: 06/26/2020] [Indexed: 11/17/2022] Open
Abstract
The effect of polymer concentration on the temperature-induced self-association of a block copolymer comprising a poly(2-ethyl-2-oxazoline) block and a random copolymer block consisting of 2-ethyl-2-oxazoline and 2-n-propyl-2-oxazoline (PEtO80-block-P(EtOxx-stat-PropO40-x) with x = 0, 4, or 8 were investigated by dynamic light scattering (DLS) and transmittance measurements (turbidimetry). The polymers reveal a complex aggregation behavior with up to three relaxation modes in the DLS data and with a transmittance that first goes through a minimum before it declines at high temperatures. At low temperatures, unassociated polymer chains were found to co-exist with larger aggregates. As the temperature is increased, enhanced association and contraction of the aggregates results in a drop of the transmittance values. The aggregates fragment into smaller micellar-like clusters when the temperature is raised further, causing the samples to become optically clear again. At high temperatures, the polymers aggregate into large compact clusters, and the samples become turbid. Interestingly, very large aggregates were observed at low temperatures when the polymer concentrations were low. The formation of these aggregates was also promoted by a more hydrophilic copolymer structure. The formation of large aggregates with an open structure at conditions where the solvent conditions are improved is probably caused by depletion flocculation of the smaller aggregates.
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Affiliation(s)
- Loan Trinh Che
- Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, 0315 Oslo, Norway;
| | - Marianne Hiorth
- Department of Pharmacy, School of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway;
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
- Correspondence: (R.H.); (A.-L.K.)
| | - Anna-Lena Kjøniksen
- Faculty of Engineering, Østfold University College, P.O. Box 700, 1757 Halden, Norway
- Correspondence: (R.H.); (A.-L.K.)
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27
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Jana S, Uchman M. Poly(2-oxazoline)-based stimulus-responsive (Co)polymers: An overview of their design, solution properties, surface-chemistries and applications. Prog Polym Sci 2020. [DOI: 10.1016/j.progpolymsci.2020.101252] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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28
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Haladjova E, Smolíček M, Ugrinova I, Momekova D, Shestakova P, Kroneková Z, Kronek J, Rangelov S. DNA delivery systems based on copolymers of poly (2‐methyl‐2‐oxazoline) and polyethyleneimine: Effect of polyoxazoline moieties on the endo‐lysosomal escape. J Appl Polym Sci 2020. [DOI: 10.1002/app.49400] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Emi Haladjova
- Institute of Polymers, Bulgarian Academy of Sciences Sofia Bulgaria
| | - Maroš Smolíček
- Department for Biomaterials ResearchPolymer Institute, Slovak Academy of Sciences Bratislava Slovakia
- Department of Inorganic Chemistry, Faculty of Natural SciencesComenius University Mlynská dolina Bratislava Slovakia
| | - Iva Ugrinova
- Institute of Molecular Biology, Bulgarian Academy of Sciences Sofia Bulgaria
| | | | - Pavletta Shestakova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences Sofia Bulgaria
| | - Zuzana Kroneková
- Department for Biomaterials ResearchPolymer Institute, Slovak Academy of Sciences Bratislava Slovakia
| | - Juraj Kronek
- Department for Biomaterials ResearchPolymer Institute, Slovak Academy of Sciences Bratislava Slovakia
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29
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Sedlacek O, Van Driessche A, Uvyn A, De Geest BG, Hoogenboom R. Poly(2-methyl-2-oxazoline) conjugates with doxorubicin: From synthesis of high drug loading water-soluble constructs to in vitro anti-cancer properties. J Control Release 2020; 326:53-62. [PMID: 32565042 DOI: 10.1016/j.jconrel.2020.06.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/13/2020] [Accepted: 06/16/2020] [Indexed: 01/12/2023]
Abstract
Poly(2-oxazoline)s represent an emerging class of polymers with increasing potential in biomedical sciences. To date, most of the work on poly(2-oxazoline)-drug conjugates focused on poly(2-ethyl-2-oxazoline) (PEtOx), a biocompatible water-soluble polymer with biological properties similar to polyethylene glycol. However, the more hydrophilic poly(2-methyl-2-oxazoline) (PMeOx) shows better anti-fouling properties than PEtOx and thus indicates greater potential for the construction of polymer therapeutics. Herein, we synthesized for the first time a drug delivery system based on a linear PMeOx with a molar mass that is high enough (40 kDa) to exploit passive accumulation in the tumor by the enhanced permeation and retention effect. The anti-cancer drug doxorubicin is attached to the polymer carrier via an acid-sensitive hydrazone bond, which allows its pH-triggered release in the tumor. The in vitro study demonstrates successful cellular uptake of the PMeOx-doxorubicin conjugate via clathrin-mediated endocytosis, pH-sensitive drug release and high cytotoxicity against B16 melanoma cells. Finally, these properties were critically compared to the analogous systems based on the established PEtOx revealing that the more hydrophilic PMeOx carrier outperforms PEtOx in most of the parameters, showing higher maximal drug loading, superior cellular uptake, better anti-fouling properties, as well as improved in vitro anti-cancer efficiency. The study demonstrates the potential of PMeOx as a versatile platform for synthesis of new drug delivery systems.
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Affiliation(s)
- Ondrej Sedlacek
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium
| | - Alexandra Van Driessche
- Department of Pharmaceutics and Cancer Research Institute Ghent (CRIG), Ghent University, 9000 Ghent, Belgium
| | - Annemiek Uvyn
- Department of Pharmaceutics and Cancer Research Institute Ghent (CRIG), Ghent University, 9000 Ghent, Belgium
| | - Bruno G De Geest
- Department of Pharmaceutics and Cancer Research Institute Ghent (CRIG), Ghent University, 9000 Ghent, Belgium
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium.
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30
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Poly(2-oxazoline) Matrices with Temperature-Dependent Solubility-Interactions with Water and Use for Cell Culture. MATERIALS 2020; 13:ma13122702. [PMID: 32545841 PMCID: PMC7344873 DOI: 10.3390/ma13122702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/10/2020] [Accepted: 06/11/2020] [Indexed: 12/22/2022]
Abstract
In this work, we studied the stability of matrices with temperature-dependent solubility and their interactions with water at physiological temperature for their application in cell culture in vitro. Gradient copolymers of 2-isopropyl- with 2-n-propyl-2-oxazoline (P(iPrOx-nPrOx)) were used to prepare the matrices. The comonomer ratio during polymerization was chosen such that the cloud point temperature (TCP) of the copolymer was below 37 °C while the glass transition (Tg) was above 37 °C. The role of the support for matrices in the context of their stability in aqueous solution was examined. Therefore, matrices in the form of both self-supported bulk polymer materials (fibrillar mats and molds) and polymer films supported on the silica slides were examined. All of the matrices remained undissolved when incubated in water at a temperature above TCP. For the self-supported mats and molds, we observed the loss of shape stability, but, in the case of films supported on silica slides, only slight changes in morphology were observed. For a more in-depth investigation of the origin of the shape deformation of self-supported matrices, we analyzed the wettability, thickness, and water uptake of films on silica support because the matrices remained undeformed under these conditions. It was found that, above the TCP of P(iPrOx-nPrOx), the wettability of the films decreased, but at the same time the films absorbed water and swelled. We examined how this specific behavior of the supported films influenced the culture of fibroblasts. The temperature-dependent solubility of the matrices and the possibility of noninvasive cell separation were also examined.
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31
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Simon L, Marcotte N, Devoisselle JM, Begu S, Lapinte V. Recent advances and prospects in nano drug delivery systems using lipopolyoxazolines. Int J Pharm 2020; 585:119536. [PMID: 32531447 DOI: 10.1016/j.ijpharm.2020.119536] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 11/29/2022]
Abstract
Facing the growing demand in nano drug delivery systems (nDDS), hybrid excipients based on natural molecules and well-defined synthetic polymers are intensively investigated. Lipopolyoxazolines (LipoPOx) composed of a polyoxazoline block (POx) and a lipid or lipid-like derivative are detailed in this review. The nature of lipids used, the route to synthesize LipoPOx and their advantages for the formulation of drugs are reported. The place of POx family in nanomedicine is discussed compared to PEG, considered as the gold standard of hydrophilic polymers. LipoPOx nanoformulations including liposomes, mixed micelles, lipid nanocapsules are provided alongside discussion of the nDDS for intravenous or topical administration.
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Affiliation(s)
- L Simon
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | - N Marcotte
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
| | | | - S Begu
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
| | - V Lapinte
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France.
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32
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Amirova A, Kirila T, Kurlykin M, Tenkovtsev A, Filippov A. Influence of Cross-Linking Degree on Hydrodynamic Behavior and Stimulus-Sensitivity of Derivatives of Branched Polyethyleneimine. Polymers (Basel) 2020; 12:polym12051085. [PMID: 32397458 PMCID: PMC7284568 DOI: 10.3390/polym12051085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/05/2020] [Accepted: 05/07/2020] [Indexed: 12/13/2022] Open
Abstract
Cross-linked derivatives of acylated branched polyethyleneimine containing 2-isopropyl-2-oxazoline units were investigated in chloroform and aqueous solutions using methods of molecular hydrodynamics, static and dynamic light scattering, and turbidity. The studied samples differed by the cross-linker content. The solubility of the polyethyleneimines studied worsened with the increasing mole fraction of the cross-linker. Cross-linked polyethyleneimines were characterized by small dimensions in comparison with linear analogs; the increase in the cross-linker content leads to a growth of intramolecular density. At low temperatures, the aqueous solutions of investigated samples were molecularly dispersed, and the large aggregates were formed due to the dehydration of oxazoline units and the formation of intermolecular hydrogen bonds. For the cross-linked polyethyleneimines, the phase separation temperatures were lower than that for linear and star-shaped poly-2-isopropyl-2-oxazolines. The low critical solution temperature of the solutions of studied polymers decreased with the increasing cross-linker mole fraction. The time of establishment of the constant characteristics of the studied solutions after the jump-like change in temperature reaches 3000 s, which is at least two times longer than for linear polymers.
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33
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Wang X, Hadjichristidis N. Organocatalytic Ring-Opening Polymerization of N-Acylated-1,4-oxazepan-7-ones Toward Well-Defined Poly(ester amide)s: Biodegradable Alternatives to Poly(2-oxazoline)s. ACS Macro Lett 2020; 9:464-470. [PMID: 35648503 DOI: 10.1021/acsmacrolett.0c00040] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We report a series of poly(ester amide)s (PEAs) synthesized by organocatalytic ring-opening polymerization (ROP) of N-acylated-1,4-oxazepan-7-one (OxP) monomers, produced from N-acylated-4-piperidones using the Baeyer-Villiger oxidation reaction. The ROP of OxPs, conducted in CH2Cl2 at room temperature with benzyl alcohol as initiator and TBD/TU (1,5,7-triazabicyclo[4.4.0]dec-5-ene/thiourea) as a binary organocatalytic system, revealed a controlled/living character. The thermodynamics of the ROP highly depends on the N-acylated substituent of monomers, with the following reactivity order: OxPPh > OxPMe > OxPPr > OxPBn. Based on NMR results, it seems that our system follows the hydrogen bonding bifunctional activation mechanism. All intermediates and final products were characterized by NMR, MALDI-TOF MS, SEC, and DSC techniques. All poly(N-acylated-1,4-oxazepan-7-one) (POxP) polymers are amorphous with different glass transition temperatures (Tg), depending on the N-acylated substituent (Tg: -2.90 to 43.75 °C). Among the synthesized polymers, only POxPMe was water-soluble and it degraded much faster than polycaprolactone in an aqueous phosphate buffer saline solution (pH = 7.4). Therefore, poly(N-acylated-1,4-oxazepan-7-one)s are potential biodegradable alternatives to poly(2-oxazoline)s.
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Affiliation(s)
- Xin Wang
- Physical Sciences and Engineering Division, KAUST Catalysis Center, Polymer Synthesis Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - Nikos Hadjichristidis
- Physical Sciences and Engineering Division, KAUST Catalysis Center, Polymer Synthesis Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
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34
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Zhou M, Qian Y, Xie J, Zhang W, Jiang W, Xiao X, Chen S, Dai C, Cong Z, Ji Z, Shao N, Liu L, Wu Y, Liu R. Poly(2‐Oxazoline)‐Based Functional Peptide Mimics: Eradicating MRSA Infections and Persisters while Alleviating Antimicrobial Resistance. Angew Chem Int Ed Engl 2020; 59:6412-6419. [DOI: 10.1002/anie.202000505] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Indexed: 01/04/2023]
Affiliation(s)
- Min Zhou
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuxin Qian
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Jiayang Xie
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Wenjing Zhang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Weinan Jiang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ximian Xiao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Sheng Chen
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Chengzhi Dai
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zihao Cong
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zhemin Ji
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ning Shao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Longqiang Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuequn Wu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Runhui Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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35
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Zhou M, Qian Y, Xie J, Zhang W, Jiang W, Xiao X, Chen S, Dai C, Cong Z, Ji Z, Shao N, Liu L, Wu Y, Liu R. Poly(2‐Oxazoline)‐Based Functional Peptide Mimics: Eradicating MRSA Infections and Persisters while Alleviating Antimicrobial Resistance. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000505] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Min Zhou
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuxin Qian
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Jiayang Xie
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Wenjing Zhang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Weinan Jiang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ximian Xiao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Sheng Chen
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Chengzhi Dai
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zihao Cong
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zhemin Ji
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ning Shao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Longqiang Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuequn Wu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Runhui Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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36
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Self-organization in aqueous solutions of thermosensitive star-shaped and linear gradient copolymers of 2-ethyl-2-oxazoline and 2-isopropyl-2-oxazoline. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04638-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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37
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Wałach W, Oleszko-Torbus N, Utrata-Wesołek A, Bochenek M, Kijeńska-Gawrońska E, Górecka Ż, Święszkowski W, Dworak A. Processing of (Co)Poly(2-oxazoline)s by Electrospinning and Extrusion from Melt and the Postprocessing Properties of the (Co)Polymers. Polymers (Basel) 2020; 12:E295. [PMID: 32024273 PMCID: PMC7077476 DOI: 10.3390/polym12020295] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 01/24/2020] [Accepted: 01/30/2020] [Indexed: 01/31/2023] Open
Abstract
Poly(2-oxazoline) (POx) matrices in the form of non-woven fibrous mats and three-dimensional moulds were obtained by electrospinning and fused deposition modelling (FDM), respectively. To obtain these materials, poly(2-isopropyl-2-oxazoline) (PiPrOx) and gradient copolymers of 2-isopropyl- with 2-n-propyl-2-oxazoline (P(iPrOx-nPrOx)), with relatively low molar masses and low dispersity values, were processed. The conditions for the electrospinning of POx were optimised for both water and the organic solvent. Also, the FDM conditions for the fabrication of POx multi-layer moulds of cylindrical or cubical shape were optimised. The properties of the POx after electrospinning and extrusion from melt were determined. The molar mass of all (co)poly(2-oxazoline)s did not change after electrospinning. Also, FDM did not influence the molar masses of the (co)polymers; however, the long processing of the material caused degradation and an increase in molar mass dispersity. The thermal properties changed significantly after processing of POx what was monitored by increase in enthalpy of exo- and endothermic peaks in differential scanning calorimetry (DSC) curve. The influence of the processing conditions on the structure and properties of the final material were evaluated having in a mind their potential application as scaffolds.
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Affiliation(s)
- Wojciech Wałach
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
| | - Natalia Oleszko-Torbus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
| | - Alicja Utrata-Wesołek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
| | - Marcelina Bochenek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
| | - Ewa Kijeńska-Gawrońska
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska St., 02-507 Warsaw, Poland; (E.K.-G.); (Ż.G.); (W.Ś.)
| | - Żaneta Górecka
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska St., 02-507 Warsaw, Poland; (E.K.-G.); (Ż.G.); (W.Ś.)
| | - Wojciech Święszkowski
- Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska St., 02-507 Warsaw, Poland; (E.K.-G.); (Ż.G.); (W.Ś.)
| | - Andrzej Dworak
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 M. Curie-Skłodowskiej St., 41-819 Zabrze, Poland; (N.O.-T.); (A.U.-W.); (M.B.); (A.D.)
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38
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Anas M, Jana S, Mandal TK. Vesicular assemblies of thermoresponsive amphiphilic polypeptide copolymers for guest encapsulation and release. Polym Chem 2020. [DOI: 10.1039/d0py00135j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Thermoresponsive amphiphilic polypeptide copolymers are synthesized via different polymerization techniques for their self-assembly into vesicular aggregates for guest encapsulation and release.
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Affiliation(s)
- Mahammad Anas
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Somdeb Jana
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Tarun K. Mandal
- School of Chemical Sciences
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
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39
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Oleszko-Torbus N, Utrata-Wesołek A, Bochenek M, Lipowska-Kur D, Dworak A, Wałach W. Thermal and crystalline properties of poly(2-oxazoline)s. Polym Chem 2020. [DOI: 10.1039/c9py01316d] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The review gathers together data concerning the influence of poly(2-substituted-2-oxazoline)s structure on their thermal and crystalline properties, and how this relationship can be adjusted in controlled manner.
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Affiliation(s)
| | | | - Marcelina Bochenek
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- 41-819 Zabrze
- Poland
| | - Daria Lipowska-Kur
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- 41-819 Zabrze
- Poland
| | - Andrzej Dworak
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- 41-819 Zabrze
- Poland
| | - Wojciech Wałach
- Centre of Polymer and Carbon Materials
- Polish Academy of Sciences
- 41-819 Zabrze
- Poland
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40
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He X, Wang X, Zhou R, Lu H, Luan S, Tang H. Synthesis and Thermoresponsive Properties of Biocompatible and Biodegradable Triblock Copolymers Bearing Linear or Y‐Shaped OEG Pendants. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201900421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xiongliang He
- Key Laboratory of Polymeric Materials and Application Technology of Hunan ProvinceCollege of ChemistryXiangtan University Xiangtan 411105 China
| | - Xiaodan Wang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
| | - Rongtao Zhou
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
| | - Hua Lu
- Beijing National Laboratory for Molecular SciencesCenter for Soft Matter Science and EngineeringKey Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Shifang Luan
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 China
| | - Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan ProvinceCollege of ChemistryXiangtan University Xiangtan 411105 China
- Institute of Functional Nano & Soft Materials (FUNSOM)Soochow University Suzhou 215123 China
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41
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Lezov A, Gubarev A, Mikhailova M, Lezova A, Mikusheva N, Kalganov V, Dudkina M, Ten’kovtsev A, Nekrasova T, Andreeva L, Saprykina N, Smyslov R, Gorshkova Y, Romanov D, Höppener S, Perevyazko I, Tsvetkov N. Star-Shaped Poly(2-ethyl-2-oxazoline) and Poly(2-isopropyl-2-oxazoline) with Central Thiacalix[4]Arene Fragments: Reduction and Stabilization of Silver Nanoparticles. Polymers (Basel) 2019; 11:E2006. [PMID: 31817077 PMCID: PMC6960741 DOI: 10.3390/polym11122006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 11/27/2019] [Accepted: 11/29/2019] [Indexed: 01/08/2023] Open
Abstract
The interaction of silver nitrate with star-shaped poly(2-ethyl-2-oxazoline) and poly(2-isopropyl-2-oxazoline) containing central thiacalix[4]arene cores, which proceeds under visible light in aqueous solutions at ambient temperature, was studied. It was found that this process led to the formation of stable colloidal solutions of silver nanoparticles. The kinetics of the formation of the nanoparticles was investigated by the observation of a time-dependent increase in the intensity of the plasmon resonance peak that is related to the nanoparticles and appears in the range of 400 to 700 nm. According to the data of electron and X-ray spectroscopy, scanning and transmission electron microscopy, X-ray diffraction analysis, and dynamic light scattering, the radius of the obtained silver nanoparticles is equal to 30 nm. In addition, the flow birefringence experiments showed that solutions of nanoparticles have high optical shear coefficients.
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Affiliation(s)
- Alexey Lezov
- Department of Molecular Biophysics and Polymer Physics, St. Petersburg State University, Universitetskaya emb., 7/9, 199034 St. Petersburg, Russia (A.G.); (M.M.); (A.L.); (N.M.); (V.K.); (I.P.)
| | - Alexander Gubarev
- Department of Molecular Biophysics and Polymer Physics, St. Petersburg State University, Universitetskaya emb., 7/9, 199034 St. Petersburg, Russia (A.G.); (M.M.); (A.L.); (N.M.); (V.K.); (I.P.)
| | - Maria Mikhailova
- Department of Molecular Biophysics and Polymer Physics, St. Petersburg State University, Universitetskaya emb., 7/9, 199034 St. Petersburg, Russia (A.G.); (M.M.); (A.L.); (N.M.); (V.K.); (I.P.)
| | - Alexandra Lezova
- Department of Molecular Biophysics and Polymer Physics, St. Petersburg State University, Universitetskaya emb., 7/9, 199034 St. Petersburg, Russia (A.G.); (M.M.); (A.L.); (N.M.); (V.K.); (I.P.)
| | - Nina Mikusheva
- Department of Molecular Biophysics and Polymer Physics, St. Petersburg State University, Universitetskaya emb., 7/9, 199034 St. Petersburg, Russia (A.G.); (M.M.); (A.L.); (N.M.); (V.K.); (I.P.)
| | - Vladimir Kalganov
- Department of Molecular Biophysics and Polymer Physics, St. Petersburg State University, Universitetskaya emb., 7/9, 199034 St. Petersburg, Russia (A.G.); (M.M.); (A.L.); (N.M.); (V.K.); (I.P.)
| | - Marina Dudkina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. 31, 199004 St. Petersburg, Russia; (M.D.); (A.T.); (T.N.); (L.A.); (N.S.); (R.S.)
| | - Andrey Ten’kovtsev
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. 31, 199004 St. Petersburg, Russia; (M.D.); (A.T.); (T.N.); (L.A.); (N.S.); (R.S.)
| | - Tatyana Nekrasova
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. 31, 199004 St. Petersburg, Russia; (M.D.); (A.T.); (T.N.); (L.A.); (N.S.); (R.S.)
| | - Larisa Andreeva
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. 31, 199004 St. Petersburg, Russia; (M.D.); (A.T.); (T.N.); (L.A.); (N.S.); (R.S.)
| | - Natalia Saprykina
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. 31, 199004 St. Petersburg, Russia; (M.D.); (A.T.); (T.N.); (L.A.); (N.S.); (R.S.)
| | - Ruslan Smyslov
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, Bolshoi pr. 31, 199004 St. Petersburg, Russia; (M.D.); (A.T.); (T.N.); (L.A.); (N.S.); (R.S.)
- Institute of Biomedical Systems and Technologies, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia
| | - Yulia Gorshkova
- Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Moscow Region, Russia
| | - Dmitriy Romanov
- Institute of Silicate Chemistry of the Russian Academy of Sciences, Adm. Makarova emb. 2, 199034 St. Petersburg, Russia;
| | - Stephanie Höppener
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldt Straße 10, 07743 Jena, Germany;
- Jena Center for Soft Matter (JCSM), Philosophenweg 7, 07743 Jena, Germany
| | - Igor Perevyazko
- Department of Molecular Biophysics and Polymer Physics, St. Petersburg State University, Universitetskaya emb., 7/9, 199034 St. Petersburg, Russia (A.G.); (M.M.); (A.L.); (N.M.); (V.K.); (I.P.)
| | - Nikolay Tsvetkov
- Department of Molecular Biophysics and Polymer Physics, St. Petersburg State University, Universitetskaya emb., 7/9, 199034 St. Petersburg, Russia (A.G.); (M.M.); (A.L.); (N.M.); (V.K.); (I.P.)
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42
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Clegg JR, Wagner AM, Shin SR, Hassan S, Khademhosseini A, Peppas NA. Modular Fabrication of Intelligent Material-Tissue Interfaces for Bioinspired and Biomimetic Devices. PROGRESS IN MATERIALS SCIENCE 2019; 106:100589. [PMID: 32189815 PMCID: PMC7079701 DOI: 10.1016/j.pmatsci.2019.100589] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
One of the goals of biomaterials science is to reverse engineer aspects of human and nonhuman physiology. Similar to the body's regulatory mechanisms, such devices must transduce changes in the physiological environment or the presence of an external stimulus into a detectable or therapeutic response. This review is a comprehensive evaluation and critical analysis of the design and fabrication of environmentally responsive cell-material constructs for bioinspired machinery and biomimetic devices. In a bottom-up analysis, we begin by reviewing fundamental principles that explain materials' responses to chemical gradients, biomarkers, electromagnetic fields, light, and temperature. Strategies for fabricating highly ordered assemblies of material components at the nano to macro-scales via directed assembly, lithography, 3D printing and 4D printing are also presented. We conclude with an account of contemporary material-tissue interfaces within bioinspired and biomimetic devices for peptide delivery, cancer theranostics, biomonitoring, neuroprosthetics, soft robotics, and biological machines.
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Affiliation(s)
- John R Clegg
- Department of Biomedical Engineering, the University of Texas at Austin, Austin, Texas, USA
| | - Angela M Wagner
- McKetta Department of Chemical Engineering, the University of Texas at Austin, Austin, Texas, USA
| | - Su Ryon Shin
- Division of Engineering in Medicine, Department of Medicine, Brigham Women's Hospital, Harvard Medical School, Cambridge, Massachusetts, USA
| | - Shabir Hassan
- Division of Engineering in Medicine, Department of Medicine, Brigham Women's Hospital, Harvard Medical School, Cambridge, Massachusetts, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Ali Khademhosseini
- Center for Minimally Invasive Therapeutics (C-MIT), University of California - Los Angeles, Los Angeles, California, USA
- California NanoSystems Institute (CNSI), University of California - Los Angeles, Los Angeles, California, USA
- Department of Bioengineering, University of California - Los Angeles, Los Angeles, California, USA
- Department of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Seoul, Republic of Korea
| | - Nicholas A Peppas
- Department of Biomedical Engineering, the University of Texas at Austin, Austin, Texas, USA
- McKetta Department of Chemical Engineering, the University of Texas at Austin, Austin, Texas, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, the University of Texas at Austin, Austin, Texas, USA
- Department of Surgery and Perioperative Care, Dell Medical School, the University of Texas at Austin, Austin, Texas, USA
- Department of Pediatrics, Dell Medical School, the University of Texas at Austin, Austin, Texas, USA
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, the University of Texas at Austin, Austin, Texas, USA
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Altıntaş Z, Beruhil Adatoz E, Ijaz A, Miko A, Demirel AL. Self-assembled poly(2-ethyl-2-oxazoline)/malonic acid hollow fibers in aqueous solutions. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Filippov A, Tarabukina E, Kudryavtseva A, Fatullaev E, Kurlykin M, Tenkovtsev A. Molecular brushes with poly-2-ethyl-2-oxazoline side chains and aromatic polyester backbone manifesting double stimuli responsiveness. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04558-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ali MW, Cheng S, Si J, Siddiq M, Ye X. Synthesis and characterization of degradable hyperbranched poly(2‐ethyl‐2‐oxazoline). ACTA ACUST UNITED AC 2019. [DOI: 10.1002/pola.29467] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Muhammad Waqas Ali
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical PhysicsUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Siyuan Cheng
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical PhysicsUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Jianhao Si
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical PhysicsUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Muhammad Siddiq
- Department of ChemistryQuaid‐I‐Azam University Islamabad 45320 Pakistan
| | - Xiaodong Ye
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical PhysicsUniversity of Science and Technology of China Hefei Anhui 230026 China
- CAS Key Laboratory of Soft Matter ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
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Svoboda J, Sedláček O, Riedel T, Hrubý M, Pop-Georgievski O. Poly(2-oxazoline)s One-Pot Polymerization and Surface Coating: From Synthesis to Antifouling Properties Out-Performing Poly(ethylene oxide). Biomacromolecules 2019; 20:3453-3463. [DOI: 10.1021/acs.biomac.9b00751] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Jan Svoboda
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho nam. 2, 162 06 Prague 6, Czech Republic
| | - Ondřej Sedláček
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho nam. 2, 162 06 Prague 6, Czech Republic
| | - Tomáš Riedel
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho nam. 2, 162 06 Prague 6, Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho nam. 2, 162 06 Prague 6, Czech Republic
| | - Ognen Pop-Georgievski
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovskeho nam. 2, 162 06 Prague 6, Czech Republic
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Rychter P, Christova D, Lewicka K, Rogacz D. Ecotoxicological impact of selected polyethylenimines toward their potential application as nitrogen fertilizers with prolonged activity. CHEMOSPHERE 2019; 226:800-808. [PMID: 30965251 DOI: 10.1016/j.chemosphere.2019.03.128] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 05/06/2023]
Abstract
Poly(2-oxazoline) polymers have found extensive application in the preparation of microcapsules for biomedical purposes. However, there is a scarcity of information related to their ecotoxicological assessment. Therefore, in this study, we focused on the ecotoxicity of selected polyethylenimines (PEIs) including poly(2-ethyl-2-oxazoline) (PEtOx) as an N-acyl-substituted PEI, linear polyethylenimine (LPEI) and branched polyethylenimine (BPEI). Oat (a monocotyledon) (Avena sativa) and radish (a dicotyledon) (Raphanus sativus) were selected as the representative plants, which are recommended by the Organization for Economic Cooperation and Development (OECD) 208 as the standard to test for plant growth. Shoot and root length, fresh and dry matter, level of total nitrogen in green parts of the plants, as well as total chlorophyll and carotenoids were determined. Phytotoxicity of all the tested parameters was dependent on the concentration of the examined polymers in the soil as well as on the time of their incubation in the soil. According to our results, the amount of nitrogen in green parts of the plants was increased compared to the control plants, which revealed the uptake of the plant-available form of nitrogen released from the tested PEIs. This was especially true for the plants treated with LPEI. Ecotoxicological impact of the incubated polymers in the soil against marine bacteria Allivibrio fischeri proved that, the all tested polyethylenimines may be classified as not harmful to aquatic microorganisms.
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Affiliation(s)
- Piotr Rychter
- Faculty of Mathematics and Natural Science, Jan Długosz University in Częstochowa, 13/15 Armii Krajowej Av., 42-200, Częstochowa, Poland.
| | - Darinka Christova
- Institute of Polymers, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Block 103-A, BG-1113, Sofia, Bulgaria
| | - Kamila Lewicka
- Faculty of Mathematics and Natural Science, Jan Długosz University in Częstochowa, 13/15 Armii Krajowej Av., 42-200, Częstochowa, Poland
| | - Diana Rogacz
- Faculty of Mathematics and Natural Science, Jan Długosz University in Częstochowa, 13/15 Armii Krajowej Av., 42-200, Częstochowa, Poland
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Zheng Z, Zhang L, Ling Y, Tang H. Triblock copolymers containing UCST polypeptide and poly(propylene glycol): Synthesis, thermoresponsive properties, and modification of PVA hydrogel. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.03.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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49
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Arraez FJ, Xu X, Van Steenberge PHM, Jerca VV, Hoogenboom R, D’hooge DR. Macropropagation Rate Coefficients and Branching Levels in Cationic Ring-Opening Polymerization of 2-Ethyl-2-oxazoline through Prediction of Size Exclusion Chromatography Data. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00544] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Francisco J. Arraez
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
| | - Xiaowen Xu
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Paul H. M. Van Steenberge
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
| | - Valentin-Victor Jerca
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
- Centre of Organic Chemistry “Costin D. Nenitzescu” Romanian Academy, Spl. Independentei 202B, 060023 Bucharest, Romania
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Dagmar R. D’hooge
- Laboratory for Chemical Technology (LCT), Ghent University, Technologiepark 125, B-9052 Ghent, Belgium
- Centre for Textile Science and Engineering, Ghent University, Technologiepark 70A, B-9052 Ghent, Belgium
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Cagli E, Ugur E, Ulusan S, Banerjee S, Erel-Goktepe I. Effect of side chain variation on surface and biological properties of poly(2-alkyl-2-oxazoline) multilayers. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.02.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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