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Groborz O, Kolouchová K, Pankrác J, Keša P, Kadlec J, Krunclová T, Pierzynová A, Šrámek J, Hovořáková M, Dalecká L, Pavlíková Z, Matouš P, Páral P, Loukotová L, Švec P, Beneš H, Štěpánek L, Dunlop D, Melo CV, Šefc L, Slanina T, Beneš J, Van Vlierberghe S, Hoogenboom R, Hrubý M. Pharmacokinetics of Intramuscularly Administered Thermoresponsive Polymers. Adv Healthc Mater 2022; 11:e2201344. [PMID: 36153823 DOI: 10.1002/adhm.202201344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 09/04/2022] [Indexed: 01/28/2023]
Abstract
Aqueous solutions of some polymers exhibit a lower critical solution temperature (LCST); that is, they form phase-separated aggregates when heated above a threshold temperature. Such polymers found many promising (bio)medical applications, including in situ thermogelling with controlled drug release, polymer-supported radiotherapy (brachytherapy), immunotherapy, and wound dressing, among others. Yet, despite the extensive research on medicinal applications of thermoresponsive polymers, their biodistribution and fate after administration remained unknown. Thus, herein, they studied the pharmacokinetics of four different thermoresponsive polyacrylamides after intramuscular administration in mice. In vivo, these thermoresponsive polymers formed depots that subsequently dissolved with a two-phase kinetics (depot maturation, slow redissolution) with half-lives 2 weeks to 5 months, as depot vitrification prolonged their half-lives. Additionally, the decrease of TCP of a polymer solution increased the density of the intramuscular depot. Moreover, they detected secondary polymer depots in the kidneys and liver; these secondary depots also followed two-phase kinetics (depot maturation and slow dissolution), with half-lives 8 to 38 days (kidneys) and 15 to 22 days (liver). Overall, these findings may be used to tailor the properties of thermoresponsive polymers to meet the demands of their medicinal applications. Their methods may become a benchmark for future studies of polymer biodistribution.
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Affiliation(s)
- Ondřej Groborz
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, Prague 6, Prague, 162 06, Czech Republic.,Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 542, Prague 6, Prague, 160 00, Czech Republic.,Institute of Biophysics and Informatics, Charles University, First Faculty of Medicine, Salmovská 1, Prague 2, Prague, 120 00, Czech Republic
| | - Kristýna Kolouchová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, Prague 6, Prague, 162 06, Czech Republic.,Department of Organic and Macromolecular Chemistry, Centre of Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Jan Pankrác
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, Prague, 120 00, Czech Republic
| | - Peter Keša
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, Prague, 120 00, Czech Republic.,FUJIFILM VisualSonics, Inc., Joop Geesinkweg 140 1114 AB, Amsterdam, The Netherlands
| | - Jan Kadlec
- Weizmann Institute of Science, Department of Brain Sciences, Rehovot, 7610001, Israel
| | - Tereza Krunclová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, Prague 6, Prague, 162 06, Czech Republic
| | - Aneta Pierzynová
- Institute of Histology and Embryology, First Faculty of Medicine, Charles University, Albertov 4, Prague 2, Prague, 128 00, Czech Republic
| | - Jaromír Šrámek
- Institute of Histology and Embryology, First Faculty of Medicine, Charles University, Albertov 4, Prague 2, Prague, 128 00, Czech Republic
| | - Mária Hovořáková
- Institute of Histology and Embryology, First Faculty of Medicine, Charles University, Albertov 4, Prague 2, Prague, 128 00, Czech Republic
| | - Linda Dalecká
- Institute of Histology and Embryology, First Faculty of Medicine, Charles University, Albertov 4, Prague 2, Prague, 128 00, Czech Republic
| | - Zuzana Pavlíková
- Institute of Histology and Embryology, First Faculty of Medicine, Charles University, Albertov 4, Prague 2, Prague, 128 00, Czech Republic
| | - Petr Matouš
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, Prague, 120 00, Czech Republic
| | - Petr Páral
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, Prague, 120 00, Czech Republic
| | - Lenka Loukotová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 542, Prague 6, Prague, 160 00, Czech Republic
| | - Pavel Švec
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 542, Prague 6, Prague, 160 00, Czech Republic
| | - Hynek Beneš
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, Prague 6, Prague, 162 06, Czech Republic
| | - Lubomír Štěpánek
- Institute of Biophysics and Informatics, Charles University, First Faculty of Medicine, Salmovská 1, Prague 2, Prague, 120 00, Czech Republic
| | - David Dunlop
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 542, Prague 6, Prague, 160 00, Czech Republic
| | - Carlos V Melo
- Department of Physical and Macromolecular Chemistry, Faculty of Sciences, Charles University, Hlavova 8, Prague 2, Prague, 128 00, Czech Republic
| | - Luděk Šefc
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, Prague, 120 00, Czech Republic
| | - Tomáš Slanina
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 542, Prague 6, Prague, 160 00, Czech Republic
| | - Jiří Beneš
- Institute of Biophysics and Informatics, Charles University, First Faculty of Medicine, Salmovská 1, Prague 2, Prague, 120 00, Czech Republic
| | - Sandra Van Vlierberghe
- Department of Organic and Macromolecular Chemistry, Centre of Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Richard Hoogenboom
- Department of Organic and Macromolecular Chemistry, Centre of Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, Ghent, 9000, Belgium
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, Prague 6, Prague, 162 06, Czech Republic
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2
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Thermo-responsive hydrogels from hyaluronic acid functionalized with poly(2-alkyl-2-oxazoline) copolymers with tuneable transition temperature. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Oleszko-Torbus N. Recent Advances in Modifications, Properties and Applications of 2-Isopropyl-2-Oxazoline (Co)Polymers. POLYM REV 2021. [DOI: 10.1080/15583724.2021.1993252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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4
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Madau M, Morandi G, Rihouey C, Lapinte V, Oulyadi H, LE Cerf D, Dulong V, Picton L. A mild and straightforward one-pot hyaluronic acid functionalization through termination of poly-(2-alkyl-2-oxazoline). POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Abbrent S, Mahun A, Smrčková MD, Kobera L, Konefał R, Černoch P, Dušek K, Brus J. Copolymer chain formation of 2-oxazolines by in situ 1H-NMR spectroscopy: dependence of sequential composition on substituent structure and monomer ratios. RSC Adv 2021; 11:10468-10478. [PMID: 35423552 PMCID: PMC8695665 DOI: 10.1039/d1ra01509e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 03/03/2021] [Indexed: 11/21/2022] Open
Abstract
In situ 1H NMR characterization of copolymerization reactions of various 2-oxazoline monomers at different molar ratios offers detailed insight into the build-up and composition of the polymer chains. Various 2-oxazolines were copolymerized in one single solvent, butyronitrile, with 2-dec-9'-enyl-2-oxazoline, where the double bond allows for post-polymerization modification and can function as a crosslinking unit to form polymer networks. The types of the monomers and their molar ratios in the feed have a strong effect on the microstructure of the forming copolymer chains. Copolymers comprising 2-dec-9'-enyl-2-oxazoline and either 2-ethyl-, 2-isopropyl-, 2-butyl-, 2-heptyl, 2-nonyl- or 2-phenyl-2-oxazoline, show significant differences in sequential structure of copolymers ranging from block to gradient and random ordering of the monomer units. 1H NMR was found to be a powerful tool to uncover detailed oxazoline copolymerization kinetics and evolution of chain composition.
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Affiliation(s)
- Sabina Abbrent
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Andrii Mahun
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University Hlavova 8 128 40 Prague 2 Czech Republic
| | - Miroslava Dušková Smrčková
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Libor Kobera
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Peter Černoch
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Karel Dušek
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
| | - Jiří Brus
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences Heyrovskeho nam. 2 162 06 Prague 6 Czech Republic
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6
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Kolouchova K, Jirak D, Groborz O, Sedlacek O, Ziolkowska N, Vit M, Sticova E, Galisova A, Svec P, Trousil J, Hajek M, Hruby M. Implant-forming polymeric 19F MRI-tracer with tunable dissolution. J Control Release 2020; 327:50-60. [PMID: 32730953 DOI: 10.1016/j.jconrel.2020.07.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 07/13/2020] [Accepted: 07/15/2020] [Indexed: 12/29/2022]
Abstract
Magnetic resonance imaging (MRI) using 19F-based tracers has emerged as a promising multi-purpose noninvasive diagnostic tool and its application requires the use of various 19F-based tracers for the intended diagnostic purpose. In this study, we report a series of double-stimuli-responsive polymers for use as injectable implants, which were designed to form implants under physiological conditions, and to subsequently dissolve with different dissolution rates (t1/2 ranges from 30 to more than 250 days). Our polymers contain a high concentration of fluorine atoms, providing remarkable signal detectability, and both a hydrophilic monomer and a pH-responsive monomer that alter the biodistribution properties of the implant. The implant location and dissolution were observed using 19F MRI, which allows the anatomic extent of the implant to be monitored. The dissolution kinetics and biocompatibility of these materials were thoroughly analyzed. No sign of toxicity in vitro or in vivo or pathology in vivo was observed, even in chronic administration. The clinical applicability of our polymers was further confirmed via imaging of a rat model by employing an instrument currently used in human medicine.
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Affiliation(s)
- Kristyna Kolouchova
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic; Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, Prague 2 128 00, Czech Republic
| | - Daniel Jirak
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic; Department of Science and Research, Faculty of Health Studies, Technical University of Liberec, Studentska 1402/2, 461 17 Liberec, Czech Republic.
| | - Ondrej Groborz
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic; Department of Organic Chemistry, Charles University, Faculty of Science, Hlavova 8, 128 43 Prague 2, Czech Republic; Institute of Biophysics and Informatics, Charles University, First Faculty of Medicine, Salmovská 1, 120 00 Prague 2, Czech Republic; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo square 542/2, 162 06 Prague 6, Czech Republic
| | - Ondrej Sedlacek
- Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, 9000 Ghent, Belgium
| | - Natalia Ziolkowska
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic; Institute of Biophysics and Informatics, Charles University, First Faculty of Medicine, Salmovská 1, 120 00 Prague 2, Czech Republic
| | - Martin Vit
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic; Technical University of Liberec, Faculty of Mechatronics Informatics and Interdisciplinary Studies, Studentska 1402/2, 461 17 Liberec, Czech Republic
| | - Eva Sticova
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic
| | - Andrea Galisova
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic
| | - Pavel Svec
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic; Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, Prague 2 128 00, Czech Republic
| | - Jiri Trousil
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic
| | - Milan Hajek
- Department of Diagnostic and Interventional Radiology, Institute for Clinical and Experimental Medicine, Videnska 1958/9, 140 21 Prague 4, Czech Republic
| | - Martin Hruby
- Institute of Macromolecular Chemistry CAS, Heyrovsky Square 2, 162 06 Prague 6, Czech Republic.
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7
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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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8
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Jirak D, Galisova A, Kolouchova K, Babuka D, Hruby M. Fluorine polymer probes for magnetic resonance imaging: quo vadis? MAGMA (NEW YORK, N.Y.) 2019; 32:173-185. [PMID: 30498886 PMCID: PMC6514090 DOI: 10.1007/s10334-018-0724-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 11/19/2018] [Accepted: 11/21/2018] [Indexed: 12/26/2022]
Abstract
Over the last few years, the development and relevance of 19F magnetic resonance imaging (MRI) for use in clinical practice has emerged. MRI using fluorinated probes enables the achievement of a specific signal with high contrast in MRI images. However, to ensure sufficient sensitivity of 19F MRI, fluorine probes with a high content of chemically equivalent fluorine atoms are required. The majority of 19F MRI agents are perfluorocarbon emulsions, which have a broad range of applications in molecular imaging, although the content of fluorine atoms in these molecules is limited. In this review, we focus mainly on polymer probes that allow higher fluorine content and represent versatile platforms with properties tailorable to a plethora of biomedical in vivo applications. We discuss the chemical development, up to the first imaging applications, of these promising fluorine probes, including injectable polymers that form depots that are intended for possible use in cancer therapy.
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Affiliation(s)
- Daniel Jirak
- Institute for Clinical and Experimental Medicine, Vídeňská 9, 140 21, Prague 4, Czech Republic.
- Institute of Biophysics and Informatics, 1st Medicine Faculty, Charles University, Salmovská 1, 120 00, Prague, Czech Republic.
- Faculty of Health Studies, Technical University of Liberec, Studentská 1402/2, 461 17, Liberec 1, Czech Republic.
| | - Andrea Galisova
- Institute for Clinical and Experimental Medicine, Vídeňská 9, 140 21, Prague 4, Czech Republic
| | - Kristyna Kolouchova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského sq. 2, 162 06, Prague 6, Czech Republic
| | - David Babuka
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského sq. 2, 162 06, Prague 6, Czech Republic
| | - Martin Hruby
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského sq. 2, 162 06, Prague 6, Czech Republic
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9
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Hybrid thermoresponsive graft constructs of fungal polysaccharide β-glucan: Physico-chemical and immunomodulatory properties. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.07.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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10
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Lorson T, Lübtow MM, Wegener E, Haider MS, Borova S, Nahm D, Jordan R, Sokolski-Papkov M, Kabanov AV, Luxenhofer R. Poly(2-oxazoline)s based biomaterials: A comprehensive and critical update. Biomaterials 2018; 178:204-280. [DOI: 10.1016/j.biomaterials.2018.05.022] [Citation(s) in RCA: 204] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 02/06/2023]
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11
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Kolouchova K, Sedlacek O, Jirak D, Babuka D, Blahut J, Kotek J, Vit M, Trousil J, Konefał R, Janouskova O, Podhorska B, Slouf M, Hruby M. Self-Assembled Thermoresponsive Polymeric Nanogels for 19F MR Imaging. Biomacromolecules 2018; 19:3515-3524. [PMID: 30011367 DOI: 10.1021/acs.biomac.8b00812] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Magnetic resonance imaging using fluorinated contrast agents (19F MRI) enables to achive highcontrast in images due to the negligible fluorine background in living tissues. In this pilot study, we developed new biocompatible, temperature-responsive, and easily synthesized polymeric nanogels containing a sufficient concentration of magnetically equivalent fluorine atoms for 19F MRI purposes. The structure of the nanogels is based on amphiphilic copolymers containing two blocks, a hydrophilic poly[ N-(2-hydroxypropyl)methacrylamide] (PHPMA) or poly(2-methyl-2-oxazoline) (PMeOx) block, and a thermoresponsive poly[ N(2,2difluoroethyl)acrylamide] (PDFEA) block. The thermoresponsive properties of the PDFEA block allow us to control the process of nanogel self-assembly upon its heating in an aqueous solution. Particle size depends on the copolymer composition, and the most promising copolymers with longer thermoresponsive blocks form nanogels of suitable size for angiogenesis imaging or the labeling of cells (approximately 120 nm). The in vitro 19F MRI experiments reveal good sensitivity of the copolymer contrast agents, while the nanogels were proven to be noncytotoxic for several cell lines.
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Affiliation(s)
- Kristyna Kolouchova
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovského sq. 2 , Prague 6 162 06 , Czech Republic
| | - Ondrej Sedlacek
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovského sq. 2 , Prague 6 162 06 , Czech Republic.,Department of Organic and Macromolecular Chemistry , Ghent University , Krijgslaan 281-S4 , 9000 Ghent , Belgium
| | - Daniel Jirak
- Institute for Clinical and Experimental Medicine , Vídeňská 9 , Prague 4 140 21 , Czech Republic.,Institute of Biophysics and Informatics, First Medicine Faculty , Charles University , Salmovská 1 , Prague 120 00 , Czech Republic
| | - David Babuka
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovského sq. 2 , Prague 6 162 06 , Czech Republic
| | - Jan Blahut
- Department of Inorganic Chemistry, Faculty of Science , Charles University , Hlavova 8 , Prague 2 128 00 , Czech Republic
| | - Jan Kotek
- Department of Inorganic Chemistry, Faculty of Science , Charles University , Hlavova 8 , Prague 2 128 00 , Czech Republic
| | - Martin Vit
- Institute for Clinical and Experimental Medicine , Vídeňská 9 , Prague 4 140 21 , Czech Republic.,TU Liberec, Faculty of mechatronics, informatics and interdisciplinary studies , Studentská 1402/2 , Liberec 1 461 17 , Czech Republic
| | - Jiri Trousil
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovského sq. 2 , Prague 6 162 06 , Czech Republic.,Department of Analytical Chemistry, Faculty of Science , Charles University , Hlavova 8 , Prague 2 128 43 , Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovského sq. 2 , Prague 6 162 06 , Czech Republic
| | - Olga Janouskova
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovského sq. 2 , Prague 6 162 06 , Czech Republic
| | - Bohumila Podhorska
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovského sq. 2 , Prague 6 162 06 , Czech Republic
| | - Miroslav Slouf
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovského sq. 2 , Prague 6 162 06 , Czech Republic
| | - Martin Hruby
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovského sq. 2 , Prague 6 162 06 , Czech Republic
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