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Haraźna K, Fricker AT, Konefał R, Medaj A, Zimowska M, Leszczyński B, Wróbel A, Bojarski AJ, Roy I, Guzik M. Physicochemical, structural and biological characterisation of poly(3-hydroxyoctanoate) supplemented with diclofenac acid conjugates - Harnessing the potential in the construction of materials for skin regeneration processes. Int J Biol Macromol 2024; 268:131476. [PMID: 38614181 DOI: 10.1016/j.ijbiomac.2024.131476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/27/2024] [Accepted: 04/06/2024] [Indexed: 04/15/2024]
Abstract
This study involved creating oligomeric conjugates of 3-hydroxy fatty acids and diclofenac, named Dic-oligo(3HAs). Advanced NMR techniques confirmed no free diclofenac in the mix. We tested diclofenac release under conditions resembling healthy and chronic wound skin. These oligomers were used to make P(3HO) blends, forming patches for drug delivery. Their preparation used the solvent casting/porogen leaching (SCPL) method. The patches' properties like porosity, roughness, and wettability were thoroughly analysed. Antimicrobial assays showed that Dic-oligo(3HAs) exhibited antimicrobial activity against reference (S. aureus, S. epidermis, S. faecalis) and clinical (Staphylococcus spp.) strains. Human keratinocytes (HaCaT) cell line tests, as per ISO 10993-5, showed no toxicity. A clear link between material roughness and HaCaT cell adhesion was found. Deep cell infiltration was verified using DAPI and phalloidin staining, observed under confocal microscopy. SEM also confirmed HaCaT cell growth on these scaffolds. The strong adhesion and proliferation of HaCaT cells on these materials indicate their potential as wound dressing layers. Additionally, the successful diclofenac release tests point to their applicability in treating both normal and chronic wounds.
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Affiliation(s)
- Katarzyna Haraźna
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland; Łukasiewicz Research Network - Kraków Institute of Technology, Zakopiańska 73, 30-418 Kraków, Poland; Department of Materials Engineering, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Kraków, Poland.
| | - Annabelle T Fricker
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, 162 06 Prague 6-Brevnov, Czech Republic
| | - Aneta Medaj
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; Doctoral School of Exact and Natural Sciences, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
| | - Małgorzata Zimowska
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland
| | - Bartosz Leszczyński
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
| | - Andrzej Wróbel
- Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Łojasiewicza 11, 30-348 Kraków, Poland
| | - Andrzej J Bojarski
- Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343 Kraków, Poland
| | - Ipsita Roy
- Department of Materials Science and Engineering, The University of Sheffield, Sheffield S3 7HQ, United Kingdom
| | - Maciej Guzik
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland.
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Świętek M, Marková I, Malínská H, Hüttl M, Miklánková D, Černá K, Konefał R, Horák D. Tannic acid- and N-acetylcysteine-chitosan-modified magnetic nanoparticles reduce hepatic oxidative stress in prediabetic rats. Colloids Surf B Biointerfaces 2024; 235:113791. [PMID: 38335769 DOI: 10.1016/j.colsurfb.2024.113791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
Magnetic nanoparticles (MNPs) modified with tannic acid (TA) have shown remarkable success as an antioxidant and antimicrobial therapeutic agent. Herein, we report a synthetic procedure for the preparation of silica-coated MNPs modified with N-acetylcysteine-modified chitosan and TA. This was achieved by free-radical grafting of NAC onto chitosan (CS), a layer-by-layer technique for modifying negatively charged MNP@SiO2 nanoparticles with positively charged CS-NAC, and crosslinking CS with TA. The antioxidant and metabolic effects of MNP@SiO2-CS-NAC and MNP@SiO2-CS-NAC-TA nanoparticles were tested in a model of prediabetic rats with hepatic steatosis, the hereditary hypertriglyceridemic rats (HHTg). The particles exhibited significant antioxidant properties in the liver, increasing the activity of the antioxidant enzymes superoxide dismutase (SOD), glutathione reductase (GR) and glutathione peroxidase (GPx), decreasing the concentration of the lipoperoxidation product malondialdehyde (MDA), and improving the antioxidant status determined as the ratio of reduced to oxidized glutathione; in particular, TA increased some antioxidant parameters. MNPs carrying antioxidants such as NAC and TA could thus represent a promising therapeutic agent for the treatment of various diseases accompanied by increased oxidative stress.
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Affiliation(s)
- Małgorzata Świętek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského Nám. 2, 162 00 Prague 6, Czech Republic
| | - Irena Marková
- Institute for Clinical and Experimental Medicine, Vídeňská 1958, 140 21 Prague 4, Czech Republic
| | - Hana Malínská
- Institute for Clinical and Experimental Medicine, Vídeňská 1958, 140 21 Prague 4, Czech Republic
| | - Martina Hüttl
- Institute for Clinical and Experimental Medicine, Vídeňská 1958, 140 21 Prague 4, Czech Republic
| | - Denisa Miklánková
- Institute for Clinical and Experimental Medicine, Vídeňská 1958, 140 21 Prague 4, Czech Republic
| | - Kristýna Černá
- Institute for Clinical and Experimental Medicine, Vídeňská 1958, 140 21 Prague 4, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského Nám. 2, 162 00 Prague 6, Czech Republic
| | - Daniel Horák
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského Nám. 2, 162 00 Prague 6, Czech Republic.
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3
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Huerta-Ángeles G, Kanizsová L, Mielczarek K, Konefał M, Konefał R, Hodan J, Kočková O, Bednarz S, Beneš H. Sustainable aerogels based on biobased poly (itaconic acid) for adsorption of cationic dyes. Int J Biol Macromol 2024; 259:129727. [PMID: 38272425 DOI: 10.1016/j.ijbiomac.2024.129727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/12/2024] [Accepted: 01/22/2024] [Indexed: 01/27/2024]
Abstract
This work reports the synthesis of poly (itaconic acid) by thermal polymerization mediated by 2,2'-Azobis(2-methylpropionamidine) dihydrochloride. Furthermore, physical hydrogels were prepared by using high molecular weight poly (itaconic acid) characterized by low dispersity and laponite RD. The hydrogels presented porous 3D network structures, with a high-water penetration of almost 2000 g/g of swelling ratio, which can allow the adsorption sites of both poly (itaconic acid) and laponite RD to be easily exposed and facilitate the adsorption of dyes. The water adsorption followed Schott's pseudo-second-order model. The mechanism of the adsorption process was investigated using 1H and 31P NMR. The hydrogel is able to fast adsorb by a combination of electrostatic interactions and hydrogen bonding by the synergic effect of the clay and poly (itaconic acid). Moreover, the prepared aerogels exhibited a fast removal of Basic Fuchsin, with an adsorption capacity of 67.56 mg/g and a high removal efficiency (~99 %). The adsorption followed the pseudo-second-order kinetic model and Langmuir isotherm model. Furthermore, the thermodynamic parameters showed that the BF process of adsorption was spontaneous and feasible, endothermic, and followed physisorption. These results indicated that the PIA/laponite-based aerogel can be considered a promising adsorbent material in textile wastewater treatment.
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Affiliation(s)
- Gloria Huerta-Ángeles
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic.
| | - Lívia Kanizsová
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Kacper Mielczarek
- Cracow University of Technology, Faculty of Chemical Engineering and Technology, Department of Biotechnology and Physical Chemistry, Cracow, Poland
| | - Magdalena Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Jiří Hodan
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Olga Kočková
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
| | - Szczepan Bednarz
- Cracow University of Technology, Faculty of Chemical Engineering and Technology, Department of Biotechnology and Physical Chemistry, Cracow, Poland
| | - Hynek Beneš
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nam. 2, 162 06 Prague, 6, Czech Republic
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Kousalová J, Šálek P, Pavlova E, Konefał R, Kobera L, Brus J, Kočková O, Etrych T. Biodegradable Covalently Crosslinked Poly[ N-(2-Hydroxypropyl) Methacrylamide] Nanogels: Preparation and Physicochemical Properties. Polymers (Basel) 2024; 16:263. [PMID: 38257062 PMCID: PMC10821105 DOI: 10.3390/polym16020263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
Recently, suitably sized polymer-based nanogels containing functional groups for the binding of biologically active substances and ultimately degradable to products that can be removed by glomerular filtration have become extensively studied systems in the field of drug delivery. Herein, we designed and tailored the synthesis of hydrophilic and biodegradable poly[N-(2-hydroxypropyl) methacrylamide-co-N,N'-bis(acryloyl) cystamine-co-6-methacrylamidohexanoyl hydrazine] (PHPMA-BAC-BMH) nanogels. The facile and versatile dispersion polymerization enabled the preparation of nanogels with a diameter below 50 nm, which is the key parameter for efficient and selective passive tumor targeting. The effects of the N,N'-bis(acryloyl) cystamine crosslinker, polymerization composition, and medium including H2O/MetCel and H2O/EtCel on the particle size, particle size distribution, morphology, and polymerization kinetics and copolymer composition were investigated in detail. We demonstrated the formation of a 38 nm colloidally stable PHPMA-BAC-BMH nanogel with a core-shell structure that can be rapidly degraded in the presence of 10 mM glutathione solution under physiologic conditions. The nanogels were stable in an aqueous solution modeling the bloodstream; thus, these nanogels have the potential to become highly important carriers in the drug delivery of various molecules.
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Affiliation(s)
| | - Petr Šálek
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovského Nám. 2, 162 00 Prague, Czech Republic; (J.K.); (E.P.); (R.K.); (L.K.); (J.B.); (O.K.); (T.E.)
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Hrochová M, Kotrchová L, Frejková M, Konefał R, Gao S, Fang J, Kostka L, Etrych T. Adaptable polymerization platform for therapeutics with tunable biodegradability. Acta Biomater 2023; 171:417-427. [PMID: 37696413 DOI: 10.1016/j.actbio.2023.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/10/2023] [Accepted: 09/05/2023] [Indexed: 09/13/2023]
Abstract
Biodegradable polymer-based therapeutics have recently become essential drug delivery biomaterials for various bioactive compounds. Biodegradable and biocompatible polymer-based biomaterials fulfill the requirements of these therapeutics because they enable to obtain polymer biomaterials with optimized blood circulation, pharmacokinetics, biodegradability, and renal excretion. Herein, we describe an adaptable polymerization platform employed for the synthesis of long-circulating, stimulus-sensitive and biodegradable biomaterials, therapeutics, or theranostics. Four chain transfer agents (CTA) were designed and successfully synthesized for the reversible addition-fragmentation chain transfer polymerization, allowing the straightforward synthesis of hydrolytically biodegradable structures of block copolymers-based biomaterials. The controlled polymerization using the CTAs enables controlling the half-life of the hydrolytic degradation of polymer precursors in a wide range from 5 h to 21 days. Moreover, the antitumor drug pirarubicin (THP) was successfully conjugated to the polymer biomaterials via a pH-sensitive hydrazone bond for in vitro and in vivo experiments. Polymer conjugates demonstrated superior antitumor efficacy compared to basic linear polymer-based conjugates. Notably, the biodegradable systems, even though those with degradation in the order of hours were selected, increased the half-life of THP in the bloodstream almost two-fold. Indeed, the presented platform design enables the main chain-end specific attachment of targeting ligands or diagnostic molecules. The adaptable polymerization platform design allows tuning of the biodegradability rate, stimuli-sensitive drug bonding, and optimized pharmacokinetics to increase the therapy outcome and system targeting, thus allowing the preparation of targeted or theranostic polymer conjugates. STATEMENT OF SIGNIFICANCE: Biodegradable and biocompatible polymer-based biomaterials are recognized as potential future bioactive nanomedicines. To advance the development of such biomaterials, we developed polymerization platforms utilizing tailored chain transfer agents allowing the straightforward synthesis of hydrolytically degradable polymer biomaterials with tuned biodegradability from hours to several days. The platform allows for the synthesis of long-circulating, stimulus-sensitive and biodegradable biomaterial serving as drug carriers or theranostics. The therapeutic potential was validated by preparation of polymer biomaterials containing pirarubicin, anticancer drug, bound via pH sensitive bond and by showing prolonged blood circulation and increased antitumor activity while keeping the drug side effects low. This work paves the way for future development of biodegradable polymer biomaterials with advanced properties in drug delivery.
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Affiliation(s)
- M Hrochová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague 16200, Czechia
| | - L Kotrchová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague 16200, Czechia
| | - M Frejková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague 16200, Czechia
| | - R Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague 16200, Czechia
| | - S Gao
- Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto 860-0082, Japan
| | - J Fang
- Faculty of Pharmaceutical Sciences, Sojo University, Kumamoto 860-0082, Japan
| | - L Kostka
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague 16200, Czechia
| | - T Etrych
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague 16200, Czechia.
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6
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Lobaz V, Liščáková V, Sedlák F, Musil D, Petrova SL, Šeděnková I, Pánek J, Kučka J, Konefał R, Tihlaříková E, Neděla V, Pankrác J, Šefc L, Hrubý M, Šácha P, Štěpánek P. Tuning polymer-blood and polymer-cytoplasm membrane interactions by manipulating the architecture of poly(2-oxazoline) triblock copolymers. Colloids Surf B Biointerfaces 2023; 231:113564. [PMID: 37742364 DOI: 10.1016/j.colsurfb.2023.113564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/19/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
Bioactive moieties designed to bind to cell membrane receptors benefit from coupling with polymeric carriers that have enhanced affinity to the cell membrane. When bound to the cell surface, such carriers create a "2D solution" of a ligand with a significantly increased concentration near a membrane-bound receptor compared to a freely water-soluble ligand. Bifunctional polymeric carriers based on amphiphilic triblock copolymers were synthesized from 2-pent-4-ynyl oxazoline, 2-nonyl oxazoline and 2-ethyl oxazoline. Their self-assembly and interactions with plasma proteins and HEK 293 cells were studied in detail. The affinity of these triblock copolymers to HEK 293 cell membranes and organ tissues was tunable by the overall hydrophobicity of the polymer molecule, which is determined by the length of the hydrophobic and hydrophilic blocks. The circulation time and biodistribution of three representative triblock copolymers were monitored after intravenous administration to C57BL/6 albino mice. A prolonged circulation time was observed for polymers with longer hydrophobic blocks, despite their molecular weight being below the renal threshold.
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Affiliation(s)
- Volodymyr Lobaz
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského n. 1888/2, 162 06 Prague 6, Czechia.
| | - Veronika Liščáková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo n. 542/2, 160 00 Prague 6, Czechia; Laboratory of Theranostics, Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, U Nemocnice 5, 128 53 Prague 2, Czechia
| | - František Sedlák
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo n. 542/2, 160 00 Prague 6, Czechia; Laboratory of Theranostics, Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, U Nemocnice 5, 128 53 Prague 2, Czechia
| | - Dominik Musil
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo n. 542/2, 160 00 Prague 6, Czechia; Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, 128 44 Prague 2, Czechia
| | - Svetlana Lukáš Petrova
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského n. 1888/2, 162 06 Prague 6, Czechia
| | - Ivana Šeděnková
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského n. 1888/2, 162 06 Prague 6, Czechia
| | - Jiří Pánek
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského n. 1888/2, 162 06 Prague 6, Czechia
| | - Jan Kučka
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského n. 1888/2, 162 06 Prague 6, Czechia
| | - Rafał Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského n. 1888/2, 162 06 Prague 6, Czechia
| | - Eva Tihlaříková
- Environmental Electron Microscopy Group, Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 61 200 Brno, Czechia
| | - Vilém Neděla
- Environmental Electron Microscopy Group, Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 61 200 Brno, Czechia
| | - Jan Pankrác
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, Czechia
| | - Luděk Šefc
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, Czechia
| | - Martin Hrubý
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského n. 1888/2, 162 06 Prague 6, Czechia
| | - Pavel Šácha
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo n. 542/2, 160 00 Prague 6, Czechia
| | - Petr Štěpánek
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského n. 1888/2, 162 06 Prague 6, Czechia
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Libánská A, Špringer T, Peštová L, Kotalík K, Konefał R, Šimonová A, Křížek T, Homola J, Randárová E, Etrych T. Using surface plasmon resonance, capillary electrophoresis and diffusion-ordered NMR spectroscopy to study drug release kinetics. Commun Chem 2023; 6:180. [PMID: 37653020 PMCID: PMC10471694 DOI: 10.1038/s42004-023-00992-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/22/2023] [Indexed: 09/02/2023] Open
Abstract
Nanomedicines, including polymer nanocarriers with controlled drug release, are considered next-generation therapeutics with advanced therapeutic properties and reduced side effects. To develop safe and efficient nanomedicines, it is crucial to precisely determine the drug release kinetics. Herein, we present application of analytical methods, i.e., surface plasmon resonance biosensor technology (SPR), capillary electrophoresis, and 1H diffusion-ordered nuclear magnetic resonance spectroscopy, which were innovatively applied for drug release determination. The methods were optimised to quantify the pH-triggered release of three structurally different drugs from a polymer carrier. The suitability of these methods for drug release characterisation was evaluated and compared using several parameters including applicability for diverse samples, the biological relevance of the experimental setup, method complexity, and the analysis outcome. The SPR method was the most universal method for the evaluation of diverse drug molecule release allowing continuous observation in the flow-through setting and requiring a small amount of sample.
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Affiliation(s)
- Alena Libánská
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Tomáš Špringer
- Institute of Photonics and Electronics, Czech Academy of Sciences, Prague, Czech Republic
| | - Lucie Peštová
- Institute of Photonics and Electronics, Czech Academy of Sciences, Prague, Czech Republic
| | - Kevin Kotalík
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Alice Šimonová
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Tomáš Křížek
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Jiří Homola
- Institute of Photonics and Electronics, Czech Academy of Sciences, Prague, Czech Republic
| | - Eva Randárová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Tomáš Etrych
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic.
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Patsula V, Mareková D, Jendelová P, Nahorniak M, Shapoval O, Matouš P, Oleksa V, Konefał R, Vosmanská M, Machová-Urdziková L, Horák D. Polymer-coated hexagonal upconverting nanoparticles: chemical stability and cytotoxicity. Front Chem 2023; 11:1207984. [PMID: 37426333 PMCID: PMC10327433 DOI: 10.3389/fchem.2023.1207984] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 06/15/2023] [Indexed: 07/11/2023] Open
Abstract
Large (120 nm) hexagonal NaYF4:Yb, Er nanoparticles (UCNPs) were synthesized by high-temperature coprecipitation method and coated with poly(ethylene glycol)-alendronate (PEG-Ale), poly (N,N-dimethylacrylamide-co-2-aminoethylacrylamide)-alendronate (PDMA-Ale) or poly(methyl vinyl ether-co-maleic acid) (PMVEMA). The colloidal stability of polymer-coated UCNPs in water, PBS and DMEM medium was investigated by dynamic light scattering; UCNP@PMVEMA particles showed the best stability in PBS. Dissolution of the particles in water, PBS, DMEM and artificial lysosomal fluid (ALF) determined by potentiometric measurements showed that all particles were relatively chemically stable in DMEM. The UCNP@Ale-PEG and UCNP@Ale-PDMA particles were the least soluble in water and ALF, while the UCNP@PMVEMA particles were the most chemically stable in PBS. Green fluorescence of FITC-Ale-modified UCNPs was observed inside the cells, demonstrating successful internalization of particles into cells. The highest uptake was observed for neat UCNPs, followed by UCNP@Ale-PDMA and UCNP@PMVEMA. Viability of C6 cells and rat mesenchymal stem cells (rMSCs) growing in the presence of UCNPs was monitored by Alamar Blue assay. Culturing with UCNPs for 24 h did not affect cell viability. Prolonged incubation with particles for 72 h reduced cell viability to 40%-85% depending on the type of coating and nanoparticle concentration. The greatest decrease in cell viability was observed in cells cultured with neat UCNPs and UCNP@PMVEMA particles. Thanks to high upconversion luminescence, high cellular uptake and low toxicity, PDMA-coated hexagonal UCNPs may find future applications in cancer therapy.
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Affiliation(s)
- Vitalii Patsula
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czechia
| | - Dana Mareková
- Institute of Experimental Medicine, Czech Academy of Sciences, Prague, Czechia
- Department of Neurosciences, Second Faculty of Medicine, Charles University, Prague, Czechia
| | - Pavla Jendelová
- Institute of Experimental Medicine, Czech Academy of Sciences, Prague, Czechia
- Department of Neurosciences, Second Faculty of Medicine, Charles University, Prague, Czechia
| | - Mykhailo Nahorniak
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czechia
| | - Oleksandr Shapoval
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czechia
| | - Petr Matouš
- Center for Advanced Preclinical Imaging, First Faculty of Medicine, Charles University, Prague, Czechia
| | - Viktoriia Oleksa
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czechia
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czechia
| | - Magda Vosmanská
- Department of Analytical Chemistry, University of Chemistry and Technology Prague, Prague, Czechia
| | | | - Daniel Horák
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czechia
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Lukáš Petrova S, Vragović M, Pavlova E, Černochová Z, Jäger A, Jäger E, Konefał R. Smart Poly(lactide)- b-poly(triethylene glycol methyl ether methacrylate) (PLA- b-PTEGMA) Block Copolymers: One-Pot Synthesis, Temperature Behavior, and Controlled Release of Paclitaxel. Pharmaceutics 2023; 15:pharmaceutics15041191. [PMID: 37111676 PMCID: PMC10143907 DOI: 10.3390/pharmaceutics15041191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
This paper introduces a new class of amphiphilic block copolymers created by combining two polymers: polylactic acid (PLA), a biocompatible and biodegradable hydrophobic polyester used for cargo encapsulation, and a hydrophilic polymer composed of oligo ethylene glycol chains (triethylene glycol methyl ether methacrylate, TEGMA), which provides stability and repellent properties with added thermo-responsiveness. The PLA-b-PTEGMA block copolymers were synthesized using ring-opening polymerization (ROP) and reversible addition-fragmentation chain transfer (RAFT) polymerization (ROP-RAFT), resulting in varying ratios between the hydrophobic and hydrophilic blocks. Standard techniques, such as size exclusion chromatography (SEC) and 1H NMR spectroscopy, were used to characterize the block copolymers, while 1H NMR spectroscopy, 2D nuclear Overhauser effect spectroscopy (NOESY), and dynamic light scattering (DLS) were used to analyze the effect of the hydrophobic PLA block on the LCST of the PTEGMA block in aqueous solutions. The results show that the LCST values for the block copolymers decreased with increasing PLA content in the copolymer. The selected block copolymer presented LCST transitions at physiologically relevant temperatures, making it suitable for manufacturing nanoparticles (NPs) and drug encapsulation-release of the chemotherapeutic paclitaxel (PTX) via temperature-triggered drug release mechanism. The drug release profile was found to be temperature-dependent, with PTX release being sustained at all tested conditions, but substantially accelerated at 37 and 40 °C compared to 25 °C. The NPs were stable under simulated physiological conditions. These findings demonstrate that the addition of hydrophobic monomers, such as PLA, can tune the LCST temperatures of thermo-responsive polymers, and that PLA-b-PTEGMA copolymers have great potential for use in drug and gene delivery systems via temperature-triggered drug release mechanisms in biomedicine applications.
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Affiliation(s)
- Svetlana Lukáš Petrova
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Martina Vragović
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Zulfiya Černochová
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Alessandro Jäger
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Eliézer Jäger
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague, Czech Republic
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Bujok S, Konefał R, Nevoralová M, Bednarz S, Mielczarek K, Beneš H. Cation identity in clay-polyelectrolyte self-assembled hydrogels: Rheological and NMR study of the polyitaconate-counterion interactions. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2022.130346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Bednarz S, Bujok S, Mielczarek K, Świergosz T, Wierzbicki S, Konefał R, Konefał M, Nevoralová M, Pavlova E, Beneš H. Synthesis of low-molecular weight itaconic acid polymers as nanoclay dispersants and dispersion stabilizers. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Lukáš Petrova S, Sincari V, Konefał R, Pavlova E, Hrubý M, Pokorný V, Jäger E. Microwave Irradiation-Assisted Reversible Addition-Fragmentation Chain Transfer Polymerization-Induced Self-Assembly of pH-Responsive Diblock Copolymer Nanoparticles. ACS Omega 2022; 7:42711-42722. [PMID: 36467927 PMCID: PMC9713868 DOI: 10.1021/acsomega.2c04036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 10/18/2022] [Indexed: 06/17/2023]
Abstract
Herein, we present a versatile platform for the synthesis of pH-responsive poly([N-(2-hydroxypropyl)]methacrylamide)-b-poly[2-(diisopropylamino)ethyl methacrylate] diblock copolymer (PHPMA-b-PDPA) nanoparticles (NPs) obtained via microwave-assisted reversible addition-fragmentation chain transfer polymerization-induced self-assembly (MWI-PISA). The N-(2-hydroxypropyl) methacrylamide (HPMA) monomer was first polymerized to obtain a macrochain transfer agent with polymerization degrees (DPs) of 23 and 51. Subsequently, using mCTA and 2-(diisopropylamino)ethyl methacrylate (DPA) as monomers, we successfully conducted MWI-PISA emulsion polymerization in aqueous solution with a solid content of 10 wt %. The NPs were obtained with high monomer conversion and polymerization rates. The resulting diblock copolymer NPs were analyzed by dynamic light scattering (DLS) and cryogenic-transmission electron microscopy (cryo-TEM). cryo-TEM studies reveal the presence of only NPs with spherical morphology such as micelles and polymer vesicles known as polymersomes. Under the selected conditions, we were able to fine-tune the morphology from micelles to polymersomes, which may attract considerable attention in the drug-delivery field. The capability for drug encapsulation using the obtained in situ pH-responsive NPs, the polymersomes based on PHPMA23-b-PDPA100, and the micelles based on PHPMA51-b-PDPA100 was demonstrated using the hydrophobic agent and fluorescent dye as Nile red (NR). In addition, the NP disassembly in slightly acidic environments enables fast NR release.
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Kracíková L, Ziółkowska N, Androvič L, Klimánková I, Červený D, Vít M, Pompach P, Konefał R, Janoušková O, Hrubý M, Jirák D, Laga R. Phosphorus-containing Polymeric Zwitterion: A Pioneering Bioresponsive Probe for 31 P-Magnetic Resonance Imaging. Macromol Biosci 2022; 22:e2100523. [PMID: 35246950 DOI: 10.1002/mabi.202100523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/14/2022] [Indexed: 11/12/2022]
Abstract
31 P-magnetic resonance (MR) is an important diagnostic technique currently used for tissue metabolites assessing, but it also has great potential for visualizing the internal body structures. However, due to the low physiological level of phosphorus-containing biomolecules, precise imaging requires the administration of an exogenous probe. Herein, we describe the synthesis and MR characterization of a pioneering metal-free 31 P-MR probe based on phosphorus-containing polymeric zwitterion. The developed probe (pTMPC) is a well-defined water-soluble macromolecule characterized by a high content of naturally rare phosphorothioate groups providing a high-intensity 31 P-MR signal clearly distinguishable from biological background both in vitro and in vitro. In addition, pTMPC can serve as a sensitive 31 P-MR sensor of pathological conditions in vivo because it undergoes oxidation-induced structural changes in the presence of reactive oxygen species. Add to this the favorable 1 H and 31 P T1 /T2 relaxation times and biocompatibility, pTMPC represents a conceptually new diagnostic, whose discovery opens up new possibilities in the field of 31 P-MR spectroscopy and imaging. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Lucie Kracíková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague, 162 06, Czech Republic.,Faculty of Chemical Technology, The University of Chemistry and Technology, Technická 5, Prague, 166 28, Czech Republic
| | - Natalia Ziółkowska
- Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, Prague, 140 21, Czech Republic.,First Faculty of Medicine, Charles University, Kateřinská 1660/32, Prague, 121 08, Czech Republic
| | - Ladislav Androvič
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague, 162 06, Czech Republic
| | - Iveta Klimánková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague, 162 06, Czech Republic
| | - David Červený
- Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, Prague, 140 21, Czech Republic
| | - Martin Vít
- Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, Prague, 140 21, Czech Republic.,Faculty of Mechatronics Informatics and Interdisciplinary Studies, Technical University of Liberec, Hálkova 917, Liberec, 461 17, Czech Republic
| | - Petr Pompach
- Institute of Biotechnology, Czech Academy of Sciences, Průmyslová 595, Vestec, 252 50, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague, 162 06, Czech Republic
| | - Olga Janoušková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague, 162 06, Czech Republic.,Faculty of Science, Jan Evangelista Purkyně University in Ústí nad Labem, Pasteurova 1, Ústí nad Labem, 400 96, Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague, 162 06, Czech Republic
| | - Daniel Jirák
- Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, Prague, 140 21, Czech Republic.,Faculty of Health Studies, Technical University of Liberec, Studentská 1402/2, Liberec, 461 17, Czech Republic
| | - Richard Laga
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague, 162 06, Czech Republic
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Vrbata D, Filipová M, Tavares MR, Červený J, Vlachová M, Šírová M, Pelantová H, Petrásková L, Bumba L, Konefał R, Etrych T, Křen V, Chytil P, Bojarová P. Glycopolymers Decorated with 3- O-Substituted Thiodigalactosides as Potent Multivalent Inhibitors of Galectin-3. J Med Chem 2022; 65:3866-3878. [PMID: 35157467 DOI: 10.1021/acs.jmedchem.1c01625] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Galectin-3 (Gal-3) participates in many cancer-related metabolic processes. The inhibition of overexpressed Gal-3 by, e.g., β-galactoside-derived inhibitors is hence promising for cancer treatment. The multivalent presentation of such inhibitors on a suitable biocompatible carrier can enhance the overall affinity to Gal-3 and favorably modify the interaction with Gal-3-overexpressing cells. We synthesized a library of C-3 aryl-substituted thiodigalactoside inhibitors and their multivalent N-(2-hydroxypropyl)methacrylamide (HPMA)-based counterparts with two different glycomimetic contents. Glycopolymers with a higher content of glycomimetic exhibited a higher affinity to Gal-3 as assessed by ELISA and biolayer interferometry. Among them, four candidates (with 4-acetophenyl, 4-cyanophenyl, 4-fluorophenyl, and thiophen-3-yl substitution) were selected for further evaluation in cancer-related experiments in cell cultures. These glycopolymers inhibited Gal-3-induced processes in cancer cells. The cyanophenyl-substituted glycopolymer exhibited the strongest antiproliferative, antimigratory, antiangiogenic, and immunoprotective properties. The prepared glycopolymers appear to be prospective modulators of the tumor microenvironment applicable in the therapy of Gal-3-associated cancers.
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Affiliation(s)
- David Vrbata
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Marcela Filipová
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, CZ-162 06 Prague 6, Czech Republic
| | - Marina R Tavares
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, CZ-162 06 Prague 6, Czech Republic
| | - Jakub Červený
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic.,Department of Analytical Chemistry, Faculty of Science, Charles University, Albertov 6, CZ-128 43 Prague 2, Czech Republic
| | - Miluše Vlachová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Milada Šírová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Helena Pelantová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Lucie Petrásková
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Ladislav Bumba
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, CZ-162 06 Prague 6, Czech Republic
| | - Tomáš Etrych
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, CZ-162 06 Prague 6, Czech Republic
| | - Vladimír Křen
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic
| | - Petr Chytil
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského nám. 2, CZ-162 06 Prague 6, Czech Republic
| | - Pavla Bojarová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic.,Department of Health Care Disciplines and Population Protection, Faculty of Biomedical Engineering, Czech Technical University in Prague, nám. Sítná 3105, CZ-272 01 Kladno, Czech Republic
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15
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Bujok S, Konefał M, Konefał R, Nevoralová M, Bednarz S, Mielczarek K, Beneš H. Insight into the aqueous Laponite® nanodispersions for self-assembled poly(itaconic acid) nanocomposite hydrogels: The effect of multivalent phosphate dispersants. J Colloid Interface Sci 2021; 610:1-12. [PMID: 34922067 DOI: 10.1016/j.jcis.2021.12.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/31/2021] [Accepted: 12/08/2021] [Indexed: 10/19/2022]
Abstract
HYPOTHESIS We hypothesize, that physical network between Laponite® nanoparticles and high molecular weight polyelectrolyte formed by mixing of Laponite® nanodispersion (containing multivalent phosphate dispersant) and polyelectrolyte solution is strongly influenced by the type and content of dispersant, which forms electric double layer (EDL) closely to the Laponite® edges. Thus, optimum dispersant concentration is necessary to overcome clay-clay interactions (excellent clay delamination), but should not be exceeded, what would result in the EDL compression and weakening of attractions forming clay-polyelectrolyte network. Thus, deeper investigation of Laponite® nanodispersions is highly demanded since it would enable to better design the self-assembled clay-polyelectrolyte hydrogels. EXPERIMENTS To study clay interparticle interactions in the presence of various multivalent phosphates, complementary methods providing wide nanodispersion characterization have been applied: zeta potential measurement and SAXS technique (electrostatic interactions), oscillatory rheology (nanodispersion physical state) and NMR experiments (ion immobilization degree). FINDINGS It was found that multivalent phosphates induce and tune strength of clay-polyelectrolyte interactions forming hydrogel network in terms of varying EDL on the Laponite® edges. Moreover, phosphate dispersing efficiency depends on the molecular size, chemical structure, and valence of the anion; its potential as efficient dispersant for hydrogel preparation can be evaluated by estimation of anion charge density.
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Affiliation(s)
- Sonia Bujok
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic.
| | - Magdalena Konefał
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Martina Nevoralová
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Szczepan Bednarz
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, Cracow 31-155, Poland
| | - Kacper Mielczarek
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, Cracow 31-155, Poland
| | - Hynek Beneš
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
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Jäger E, Humajová J, Dölen Y, Kučka J, Jäger A, Konefał R, Pankrác J, Pavlova E, Heizer T, Šefc L, Hrubý M, Figdor CG, Verdoes M. Enhanced Antitumor Efficacy through an "AND gate" Reactive Oxygen-Species-Dependent pH-Responsive Nanomedicine Approach. Adv Healthc Mater 2021; 10:e2100304. [PMID: 34050625 DOI: 10.1002/adhm.202100304] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 05/04/2021] [Indexed: 12/15/2022]
Abstract
Anticancer drug delivery strategies are designed to take advantage of the differential chemical environment in solid tumors independently, or to high levels of reactive oxygen species (ROS) or to low pH, compared to healthy tissue. Here, the design and thorough characterization of two functionalizable "AND gate" multiresponsive (MR) block amphiphilic copolymers are reported, aimed to take full advantage of the coexistence of two chemical cues-ROS and low pH-present in the tumor microenvironment. The hydrophobic blocks contain masked pH-responsive side chains, which are exposed exclusively in response to ROS. Hence, the hydrophobic polymer side chains will undergo a charge shift in a very relevant pH window present in the extracellular milieu in most solid tumors (pH 5.6-7.2) after demasking by ROS. Doxorubicin (DOX)-loaded nanosized "AND gate" MR polymersomes (MRPs) are fabricated via microfluidic self-assembly. Chemical characterization reveals ROS-dependent pH sensitivity and accelerated DOX release under influence of both ROS and low pH. Treatment of tumor-bearing mice with DOX-loaded nonresponsive and "AND gate" MRPs dramatically decreases cardiac toxicity. The most optimal "AND gate" MRPs outperform free DOX in terms of tumor growth inhibition and survival, shedding light on chemical requirements for successful cancer nanomedicine.
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Affiliation(s)
- Eliézer Jäger
- Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Heyrovsky Sq. 2 Prague 162 06 Czech Republic
- Department of Tumor Immunology Radboud Institute for Molecular Life Sciences Radboud University Medical Center Geert Grooteplein 26 Nijmegen 6525 GA The Netherlands
| | - Jana Humajová
- Institute of Biophysics and Informatics First Faculty of Medicine Charles University Salmovska 1 Prague 120 00 Czech Republic
| | - Yusuf Dölen
- Department of Tumor Immunology Radboud Institute for Molecular Life Sciences Radboud University Medical Center Geert Grooteplein 26 Nijmegen 6525 GA The Netherlands
| | - Jan Kučka
- Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Heyrovsky Sq. 2 Prague 162 06 Czech Republic
| | - Alessandro Jäger
- Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Heyrovsky Sq. 2 Prague 162 06 Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Heyrovsky Sq. 2 Prague 162 06 Czech Republic
| | - Jan Pankrác
- Center for Advanced Preclinical Imaging (CAPI) First Faculty of Medicine Charles University Salmovská 3 Prague 120 00 Czech Republic
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Heyrovsky Sq. 2 Prague 162 06 Czech Republic
| | - Tomáš Heizer
- Center for Advanced Preclinical Imaging (CAPI) First Faculty of Medicine Charles University Salmovská 3 Prague 120 00 Czech Republic
| | - Luděk Šefc
- Center for Advanced Preclinical Imaging (CAPI) First Faculty of Medicine Charles University Salmovská 3 Prague 120 00 Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry Academy of Sciences of the Czech Republic Heyrovsky Sq. 2 Prague 162 06 Czech Republic
| | - Carl G. Figdor
- Department of Tumor Immunology Radboud Institute for Molecular Life Sciences Radboud University Medical Center Geert Grooteplein 26 Nijmegen 6525 GA The Netherlands
- Oncode Institute Geert Grooteplein Zuid 26 Nijmegen 6525 GA The Netherlands
- Institute for Chemical Immunology Geert Grooteplein Zuid 26 Nijmegen 6525 GA The Netherlands
| | - Martijn Verdoes
- Department of Tumor Immunology Radboud Institute for Molecular Life Sciences Radboud University Medical Center Geert Grooteplein 26 Nijmegen 6525 GA The Netherlands
- Institute for Chemical Immunology Geert Grooteplein Zuid 26 Nijmegen 6525 GA The Netherlands
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Sincari V, Petrova SL, Konefał R, Hruby M, Jäger E. Microwave-assisted RAFT polymerization of N-(2-hydroxypropyl) methacrylamide and its relevant copolymers. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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18
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Petrova SL, Jäger E, Jäger A, Höcherl A, Konefał R, Zhigunov A, Pavlova E, Janoušková O, Hrubý M. Development of an Acid-Labile Ketal Linked Amphiphilic Block Copolymer Nanoparticles for pH-Triggered Release of Paclitaxel. Polymers (Basel) 2021; 13:polym13091465. [PMID: 34062772 PMCID: PMC8124141 DOI: 10.3390/polym13091465] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 04/21/2021] [Accepted: 04/28/2021] [Indexed: 02/07/2023] Open
Abstract
Here, we report on the construction of biodegradable poly(ethylene oxide monomethyl ether) (MPEO)-b-poly(ε-caprolactone) (PCL) nanoparticles (NPs) having acid-labile (acyclic ketal group) linkage at the block junction. In the presence of acidic pH, the nanoassemblies were destabilized as a consequence of cleaving this linkage. The amphiphilic MPEO-b-PCL diblock copolymer self-assembled in PBS solution into regular spherical NPs. The structure of self-assemble and disassemble NPs were characterized in detail by dynamic (DLS), static (SLS) light scattering, small-angle X-ray scattering (SAXS), and transmission electron microscopy (TEM). The key of the obtained NPs is using them in a paclitaxel (PTX) delivery system and study their in vitro cytostatic activity in a cancer cell model. The acid-labile ketal linker enabled the disassembly of the NPs in a buffer simulating an acidic environment in endosomal (pH ~5.0 to ~6.0) and lysosomal (pH ~4.0 to ~5.0) cell compartments resulting in the release of paclitaxel (PTX) and formation of neutral degradation products. The in vitro cytotoxicity studies showed that the activity of the drug-loaded NPs was increased compared to the free PTX. The ability of the NPs to release the drug at the endosomal pH with concomitant high cytotoxicity makes them suitable candidates as a drug delivery system for cancer therapy.
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Affiliation(s)
- Svetlana Lukáš Petrova
- Correspondence: (S.L.P.); (A.J.); Tel.: +420-296-809-296 (S.L.P.); +420-296-809-274 (A.J.)
| | | | - Alessandro Jäger
- Correspondence: (S.L.P.); (A.J.); Tel.: +420-296-809-296 (S.L.P.); +420-296-809-274 (A.J.)
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Tavares MR, Hrabánková K, Konefał R, Kaňa M, Říhová B, Etrych T, Šírová M, Chytil P. HPMA-Based Copolymers Carrying STAT3 Inhibitor Cucurbitacin-D as Stimulus-Sensitive Nanomedicines for Oncotherapy. Pharmaceutics 2021; 13:pharmaceutics13020179. [PMID: 33525658 PMCID: PMC7911143 DOI: 10.3390/pharmaceutics13020179] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 12/19/2022] Open
Abstract
The study describes the synthesis, physicochemical properties, and biological evaluation of polymer therapeutics based on N-(2-hydroxypropyl)methacrylamide (HPMA) copolymers intended for a tumor-targeted immuno-oncotherapy. Water-soluble linear and cholesterol-containing HPMA precursors were synthesized using controlled reversible addition–fragmentation chain transfer polymerization to reach molecular weight Mn about 2 × 104 g·mol−1 and low dispersity. These linear or self-assembled micellar conjugates, containing immunomodulatory agent cucurbitacin-D (CuD) or the anticancer drug doxorubicin (Dox) covalently bound by the hydrolytically degradable hydrazone bond, showed a hydrodynamic size of 10–30 nm in aqueous solutions. The CuD-containing conjugates were stable in conditions mimicking blood. Importantly, a massive release of active CuD in buffer mimicking the acidic tumor environment was observed. In vitro, both the linear (LP-CuD) and the micellar (MP-CuD) conjugates carrying CuD showed cytostatic/cytotoxic activity against several cancer cell lines. In a murine metastatic and difficult-to-treat 4T1 mammary carcinoma, only LP-CuD showed an anticancer effect. Indeed, the co-treatment with Dox-containing micellar polymer conjugate and LP-CuD showed potentiation of the anticancer effect. The results indicate that the binding of CuD, characterized by prominent hydrophobic nature and low bioavailability, to the polymer carrier allows a safe and effective delivery. Therefore, the conjugate could serve as a potential component of immuno-oncotherapy schemes within the next preclinical evaluation.
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Affiliation(s)
- Marina R. Tavares
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského náměstí 2, CZ-162 06 Prague 6, Czech Republic; (M.R.T.); (R.K.); (T.E.)
| | - Klára Hrabánková
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic; (K.H.); (M.K.); (B.Ř.); (M.Š.)
| | - Rafał Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského náměstí 2, CZ-162 06 Prague 6, Czech Republic; (M.R.T.); (R.K.); (T.E.)
| | - Martin Kaňa
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic; (K.H.); (M.K.); (B.Ř.); (M.Š.)
| | - Blanka Říhová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic; (K.H.); (M.K.); (B.Ř.); (M.Š.)
| | - Tomáš Etrych
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského náměstí 2, CZ-162 06 Prague 6, Czech Republic; (M.R.T.); (R.K.); (T.E.)
| | - Milada Šírová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic; (K.H.); (M.K.); (B.Ř.); (M.Š.)
| | - Petr Chytil
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského náměstí 2, CZ-162 06 Prague 6, Czech Republic; (M.R.T.); (R.K.); (T.E.)
- Correspondence: ; Tel.: +420-296-809-230
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21
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Jäger A, Donato RK, Perchacz M, Donato KZ, Starý Z, Konefał R, Serkis-Rodzeń M, Raucci MG, Fuentefria AM, Jäger E. Human metabolite-derived alkylsuccinate/dilinoleate copolymers: from synthesis to application. J Mater Chem B 2020; 8:9980-9996. [PMID: 33073835 DOI: 10.1039/d0tb02068k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The advances in polymer chemistry have allowed the preparation of biomedical polymers using human metabolites as monomers that can hold unique properties beyond the required biodegradability and biocompatibility. Herein, we demonstrate the use of endogenous human metabolites (succinic and dilinoleic acids) as monomeric building blocks to develop a new series of renewable resource-based biodegradable and biocompatible copolyesters. The novel copolyesters were characterized in detail employing several standard techniques, namely 1H NMR, 13C NMR, and FTIR spectroscopy and SEC, followed by an in-depth thermomechanical and surface characterization of their resulting thin films (DSC, TGA, DMTA, tensile tests, AFM, and contact angle measurements). Also, their anti-fungal biofilm properties were assessed via an anti-fungal biofilm assay and the biological properties were evaluated in vitro using relevant human-derived cells (human mesenchymal stem cells and normal human dermal fibroblasts). These novel highly biocompatible polymers are simple and cheap to prepare, and their synthesis can be easily scaled-up. They presented good mechanical, thermal and anti-fungal biofilm properties while also promoting cell attachment and proliferation, outperforming well-known polymers used for biomedical applications (e.g. PVC, PLGA, and PCL). Moreover, they induced morphological changes in the cells, which were dependent on the structural characteristics of the polymers. In addition, the obtained physicochemical and biological properties can be design-tuned by the synthesis of homo- and -copolymers through the selection of the diol moiety (ES, PS, or BS) and by the addition of a co-monomer, DLA. Consequently, the copolyesters presented herein have high application potential as renewable and cost-effective biopolymers for various biomedical applications.
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Affiliation(s)
- Alessandro Jäger
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Ricardo K Donato
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Magdalena Perchacz
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic. and Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Katarzyna Z Donato
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Zdeněk Starý
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Rafał Konefał
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Magdalena Serkis-Rodzeń
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Maria G Raucci
- Institute of Polymers, Composites and Biomaterials, National Research Council, Mostrad'Oltremare Pad.20, Viale Kennedy 54, 80125 Naples, Italy
| | - Alexandre M Fuentefria
- Laboratory of Applied Mycology, Department of Analysis, Faculty of Pharmacy, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Eliézer Jäger
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Konefał R, Morávková Z, Paruzel B, Patsula V, Abbrent S, Szutkowski K, Jurga S. Effect of PAMAM Dendrimers on Interactions and Transport of LiTFSI and NaTFSI in Propylene Carbonate-Based Electrolytes. Polymers (Basel) 2020; 12:E1595. [PMID: 32708361 PMCID: PMC7407142 DOI: 10.3390/polym12071595] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/12/2020] [Accepted: 07/16/2020] [Indexed: 11/25/2022] Open
Abstract
Poly(amidoamine) (PAMAM)-based electrolytes are prepared by dissolving the PAMAM half-generations G1.5 or G2.5 in propylene carbonate (PC), either with lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) or sodium bis(trifluoromethylsulfonyl)imide (NaTFSI) salts. The solutions, designed for ion battery applications, are studied in terms of ions transport properties. Raman Spectroscopy reveals information about the interactions between cations and PAMAM dendrimers as well as full dissociation of the salts in all solutions. Pulsed-field gradient Nuclear Magnetic Resonance (PFG NMR), measured as a function of both temperature and PAMAM concentration, are obtained for the cation, anion, solvent, and dendrimer molecules using lithium (7Li), sodium (23Na), fluorine (19F), and hydrogen (1H) NMR, respectively. It was found that lithium diffusion is slow compared to the larger TFSI anion and decreases with PAMAM concentration due to interactions between cation and dendrimer. Comparison of conductivities calculated from diffusion coefficients using the Nernst-Einstein equation, with conductivity measurements obtained from Impedance Spectroscopy (IS), shows slightly higher IS conductivities, caused among others by PAMAM conductivity.
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Affiliation(s)
- Rafał Konefał
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic; (Z.M.); (B.P.); (V.P.); (S.A.)
| | - Zuzana Morávková
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic; (Z.M.); (B.P.); (V.P.); (S.A.)
| | - Bartosz Paruzel
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic; (Z.M.); (B.P.); (V.P.); (S.A.)
| | - Vitalii Patsula
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic; (Z.M.); (B.P.); (V.P.); (S.A.)
| | - Sabina Abbrent
- Institute of Macromolecular Chemistry CAS, Heyrovského nám. 2, 162 06 Prague 6, Czech Republic; (Z.M.); (B.P.); (V.P.); (S.A.)
| | - Kosma Szutkowski
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland; (K.S.); (S.J.)
| | - Stefan Jurga
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznań, Poland; (K.S.); (S.J.)
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Urbánek T, Trousil J, Rak D, Gunár K, Konefał R, Šlouf M, Sedlák M, Šebestová Janoušková O, Hrubý M. γ‐Butyrolactone Copolymerization with the Well‐Documented Polymer Drug Carrier Poly(ethylene oxide)‐
block
‐poly(ε‐caprolactone) to Fine‐Tune Its Biorelevant Properties. Macromol Biosci 2020. [DOI: 10.1002/mabi.202070009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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25
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Urbánek T, Trousil J, Rak D, Gunár K, Konefał R, Šlouf M, Sedlák M, Šebestová Janoušková O, Hrubý M. γ-Butyrolactone Copolymerization with the Well-Documented Polymer Drug Carrier Poly(ethylene oxide)-block-poly(ε-caprolactone) to Fine-Tune Its Biorelevant Properties. Macromol Biosci 2020; 20:e1900408. [PMID: 32174005 DOI: 10.1002/mabi.201900408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/22/2020] [Indexed: 02/01/2023]
Abstract
Polymeric drug carriers exhibit excellent properties that advance drug delivery systems. In particular, carriers based on poly(ethylene oxide)-block-poly(ε-caprolactone) are very useful in pharmacokinetics. In addition to their proven biocompatibility, there are several requirements for the efficacy of the polymeric drug carriers after internalization, e.g., nanoparticle behavior, cellular uptake, the rate of degradation, and cellular localization. The introduction of γ-butyrolactone units into the hydrophobic block enables the tuning of the abovementioned properties over a wide range. In this study, a relatively high content of γ-butyrolactone units with a reasonable yield of ≈60% is achieved by anionic ring-opening copolymerization using 1,5,7-triazabicyclo[4.4.0]dec-5-ene as a very efficient catalyst in the nonpolar environment of toluene with an incorporated γ-butyrolactone content of ≈30%. The content of γ-butyrolactone units can be easily modulated according to the feed ratio of the monomers. This method enables control over the rate of degradation so that when the content of γ-butyrolactone increases, the rate of degradation increases. These findings broaden the application possibilities of polyester-polyether-based nanoparticles for biomedical applications, such as drug delivery systems.
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Affiliation(s)
- Tomáš Urbánek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Jiří Trousil
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia.,Department of Analytical Chemistry, Charles University, Faculty of Science, Hlavova 8, 128 43, Prague 2, Czechia
| | - Dmytro Rak
- Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01, Košice, Slovakia
| | - Kristýna Gunár
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Marián Sedlák
- Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01, Košice, Slovakia
| | - Olga Šebestová Janoušková
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského náměstí 2, 162 00, Prague 6, Czechia
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26
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Jäger E, Sincari V, Albuquerque LJC, Jäger A, Humajova J, Kucka J, Pankrac J, Paral P, Heizer T, Janouskova O, Konefał R, Pavlova E, Sedlacek O, Giacomelli FC, Pouckova P, Sefc L, Stepanek P, Hruby M. Reactive Oxygen Species (ROS)-Responsive Polymersomes with Site-Specific Chemotherapeutic Delivery into Tumors via Spacer Design Chemistry. Biomacromolecules 2020; 21:1437-1449. [PMID: 32083473 DOI: 10.1021/acs.biomac.9b01748] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The lack of cellular and tissue specificities in conventional chemotherapies along with the generation of a complex tumor microenvironment (TME) limits the dosage of active agents that reaches tumor sites, thereby resulting in ineffective responses and side effects. Therefore, the development of selective TME-responsive nanomedicines is of due relevance toward successful chemotherapies, albeit challenging. In this framework, we have synthesized novel, ready-to-use ROS-responsive amphiphilic block copolymers (BCs) with two different spacer chemistry designs to connect a hydrophobic boronic ester-based ROS sensor to the polymer backbone. Hydrodynamic flow focusing nanoprecipitation microfluidics (MF) was used in the preparation of well-defined ROS-responsive PSs; these were further characterized by a combination of techniques [1H NMR, dynamic light scattering (DLS), static light scattering (SLS), transmission electron microscopy (TEM), and cryogenic TEM (cryo-TEM)]. The reaction with hydrogen peroxide releases an amphiphilic phenol or a hydrophilic carboxylic acid, which affects polymersome (PS) stability and cargo release. Therefore, the importance of the spacer chemistry in BC deprotection and PS stability and cargo release is herein highlighted. We have also evaluated the impact of spacer chemistry on the PS-specific release of the chemotherapeutic drug doxorubicin (DOX) into tumors in vitro and in vivo. We demonstrate that by spacer chemistry design one can enhance the efficacy of DOX treatments (decrease in tumor growth and prolonged animal survival) in mice bearing EL4 T cell lymphoma. Side effects (weight loss and cardiotoxicity) were also reduced compared to free DOX administration, highlighting the potential of the well-defined ROS-responsive PSs as TME-selective nanomedicines. The PSs could also find applications in other environments with high ROS levels, such as chronic inflammations, aging, diabetes, cardiovascular diseases, and obesity.
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Affiliation(s)
- Eliézer Jäger
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
| | - Vladimir Sincari
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
| | - Lindomar J C Albuquerque
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André 09210-580, Brazil
| | - Alessandro Jäger
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
| | - Jana Humajova
- Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University in Prague, Salmovska 1, 120 00 Prague, Czech Republic
| | - Jan Kucka
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
| | - Jan Pankrac
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, 120 00 Prague, Czech Republic
| | - Petr Paral
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, 120 00 Prague, Czech Republic
| | - Tomas Heizer
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, 120 00 Prague, Czech Republic
| | - Olga Janouskova
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
| | - Ondrej Sedlacek
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
| | - Fernando C Giacomelli
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André 09210-580, Brazil
| | - Pavla Pouckova
- Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University in Prague, Salmovska 1, 120 00 Prague, Czech Republic
| | - Ludek Sefc
- Center for Advanced Preclinical Imaging (CAPI), First Faculty of Medicine, Charles University, Salmovská 3, Prague 2, 120 00 Prague, Czech Republic
| | - Petr Stepanek
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
| | - Martin Hruby
- Institute of Macromolecular Chemistry, Heyrovsky Sq. 2, 162 06 Prague, Czech Republic
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Konefał R, Spěváček J, Mužíková G, Laga R. Thermoresponsive behavior of poly(DEGMA)-based copolymers. NMR and dynamic light scattering study of aqueous solutions. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109488] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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28
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Tavares MR, Bláhová M, Sedláková L, Elling L, Pelantová H, Konefał R, Etrych T, Křen V, Bojarová P, Chytil P. High-Affinity N-(2-Hydroxypropyl)methacrylamide Copolymers with Tailored N-Acetyllactosamine Presentation Discriminate between Galectins. Biomacromolecules 2020; 21:641-652. [PMID: 31904940 DOI: 10.1021/acs.biomac.9b01370] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
N-Acetyllactosamine (LacNAc; Galβ4GlcNAc) is a typical disaccharide ligand of galectins. The most abundant members of these human lectins, galectin-1 (Gal-1) and galectin-3 (Gal-3), participate in a number of pathologies including cancerogenesis and metastatic formation. In this study, we synthesized a series of fifteen N-(2-hydroxypropyl)methacrylamide (HPMA)-based glycopolymers with varying LacNAc amounts and presentations and evaluated the impact of their architecture on the binding affinity to Gal-1 and Gal-3. The controlled radical reversible addition-fragmentation chain transfer copolymerization technique afforded linear polymer precursors with comparable molecular weight (Mn ≈ 22,000 g mol-1) and narrow dispersity (D̵ ≈ 1.1). The precursors were conjugated with the functionalized LacNAc disaccharide (4-22 mol % content in glycopolymer) prepared by enzymatic synthesis under catalysis by β-galactosidase from Bacillus circulans. The structure-affinity relationship study based on the enzyme-linked immunosorbent assay revealed that the type of LacNAc presentation, individual or clustered on bi- or trivalent linkers, brings a clear discrimination (almost 300-fold) between Gal-1 and Gal-3, reaching avidity to Gal-1 in the nanomolar range. Whereas Gal-1 strongly preferred a dense presentation of individually distributed LacNAc epitopes, Gal-3 preferred a clustered LacNAc presentation. Such a strong galectin preference based just on the structure of a multivalent glycopolymer type is exceptional. The prepared nontoxic, nonimmunogenic, and biocompatible glycopolymers are prospective for therapeutic applications requiring selectivity for one particular galectin.
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Affiliation(s)
- Marina Rodrigues Tavares
- Institute of Macromolecular Chemistry , Czech Academy of Sciences , Heyrovského náměstí 2 , CZ-162 06 Prague 6 , Czech Republic
| | - Markéta Bláhová
- Institute of Macromolecular Chemistry , Czech Academy of Sciences , Heyrovského náměstí 2 , CZ-162 06 Prague 6 , Czech Republic
| | - Lieselotte Sedláková
- Institute of Microbiology , Czech Academy of Sciences , Vídeňská 1083 , CZ-142 20 Prague 4 , Czech Republic.,Department of Health Care Disciplines and Population Protection, Faculty of Biomedical Engineering , Czech Technical University in Prague , Sítná sq. 3105 , CZ-272 01 Kladno , Czech Republic
| | - Lothar Elling
- Institute of Biotechnology and Helmholtz Institute for Biomedical Engineering , RWTH Aachen , Pauwelstr. 20 , D-52079 Aachen , Germany
| | - Helena Pelantová
- Institute of Microbiology , Czech Academy of Sciences , Vídeňská 1083 , CZ-142 20 Prague 4 , Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry , Czech Academy of Sciences , Heyrovského náměstí 2 , CZ-162 06 Prague 6 , Czech Republic
| | - Tomáš Etrych
- Institute of Macromolecular Chemistry , Czech Academy of Sciences , Heyrovského náměstí 2 , CZ-162 06 Prague 6 , Czech Republic
| | - Vladimír Křen
- Institute of Microbiology , Czech Academy of Sciences , Vídeňská 1083 , CZ-142 20 Prague 4 , Czech Republic
| | - Pavla Bojarová
- Institute of Microbiology , Czech Academy of Sciences , Vídeňská 1083 , CZ-142 20 Prague 4 , Czech Republic.,Department of Health Care Disciplines and Population Protection, Faculty of Biomedical Engineering , Czech Technical University in Prague , Sítná sq. 3105 , CZ-272 01 Kladno , Czech Republic
| | - Petr Chytil
- Institute of Macromolecular Chemistry , Czech Academy of Sciences , Heyrovského náměstí 2 , CZ-162 06 Prague 6 , Czech Republic
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29
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Mielczarek K, Łabanowska M, Kurdziel M, Konefał R, Beneš H, Bujok S, Kowalski G, Bednarz S. High‐Molecular‐Weight Polyampholytes Synthesized via Daylight‐Induced, Initiator‐Free Radical Polymerization of Renewable Itaconic Acid. Macromol Rapid Commun 2020; 41:e1900611. [DOI: 10.1002/marc.201900611] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 01/03/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Kacper Mielczarek
- Faculty of Chemical Engineering and TechnologyCracow University of Technology Warszawska 24 31‐155 Cracow Poland
| | - Maria Łabanowska
- Faculty of ChemistryJagiellonian University Gronostajowa 2 30‐387 Cracow Poland
| | - Magdalena Kurdziel
- Faculty of ChemistryJagiellonian University Gronostajowa 2 30‐387 Cracow Poland
| | - Rafał Konefał
- Institute of Macromolecular Chemistry CAS Heyrovsky Sq. 2 162 06 Prague 6 Czech Republic
| | - Hynek Beneš
- Institute of Macromolecular Chemistry CAS Heyrovsky Sq. 2 162 06 Prague 6 Czech Republic
| | - Sonia Bujok
- Institute of Macromolecular Chemistry CAS Heyrovsky Sq. 2 162 06 Prague 6 Czech Republic
| | - Grzegorz Kowalski
- Faculty of Food TechnologyUniversity of Agriculture in Krakow Balicka 122 30‐149 Cracow Poland
| | - Szczepan Bednarz
- Faculty of Chemical Engineering and TechnologyCracow University of Technology Warszawska 24 31‐155 Cracow Poland
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Lobaz V, Konefał R, Pánek J, Vlk M, Kozempel J, Petřík M, Novy Z, Gurská S, Znojek P, Štěpánek P, Hrubý M. In Situ In Vivo radiolabeling of polymer-coated hydroxyapatite nanoparticles to track their biodistribution in mice. Colloids Surf B Biointerfaces 2019; 179:143-152. [PMID: 30954015 DOI: 10.1016/j.colsurfb.2019.03.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/21/2019] [Accepted: 03/26/2019] [Indexed: 11/26/2022]
Abstract
The imaging of healthy tissues and solid tumors benefits from the application of nanoparticle probes with altered pharmacokinetics, not available to low molecular weight compounds. However, the distribution and accumulation of nanoprobes in vivo typically take at least tens of hours to be efficient. For nanoprobes bearing a radioactive label, this is contradictory to the requirement of minimizing the radiation dose for patients by using as-short-as-feasible half-life radionuclides in diagnostics. Thus, we developed a two-stage diagnostic concept for monitoring long-lasting targeting effects with short-lived radioactive labels using bone-mimicking biocompatible polymer-coated and colloidally fully stabilized hydroxyapatite nanoparticles (HAP NPs) and bone-seeking radiopharmaceuticals. Within the pretargeting stage, the nonlabeled nanoparticles are allowed to circulate in the blood. Afterward, 99mTc-1-hydroxyethylidene-1.1-diphosphonate (99mTc-HEDP) is administered intravenously for in situ labeling of the nanoparticles and subsequent single-photon emission computed tomography/computed tomography (SPECT/CT) visualization. The HAP NPs, stabilized with tailored hydrophilic polymers, are not cytotoxic in vitro, as shown by several cell lines. The polymer coating prolongs the circulation of HAP NPs in the blood. The nanoparticles were successfully labeled in vivo with 99mTc-HEDP, 1 and 24 h after injection, and they were visualized by SPECT/CT over time in healthy mice.
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Affiliation(s)
- Volodymyr Lobaz
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 1888/2, 162 06, Prague 6, Czech Republic.
| | - Rafał Konefał
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 1888/2, 162 06, Prague 6, Czech Republic
| | - Jiří Pánek
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 1888/2, 162 06, Prague 6, Czech Republic
| | - Martin Vlk
- Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Břehová 7, 115 19, Prague 1, Czech Republic
| | - Ján Kozempel
- Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Břehová 7, 115 19, Prague 1, Czech Republic
| | - Miloš Petřík
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Zbyněk Novy
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Soňa Gurská
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Pawel Znojek
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Petr Štěpánek
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 1888/2, 162 06, Prague 6, Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry AS CR, Heyrovsky Sq. 1888/2, 162 06, Prague 6, Czech Republic
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Trousil J, Syrová Z, Dal NJK, Rak D, Konefał R, Pavlova E, Matějková J, Cmarko D, Kubíčková P, Pavliš O, Urbánek T, Sedlák M, Fenaroli F, Raška I, Štěpánek P, Hrubý M. Rifampicin Nanoformulation Enhances Treatment of Tuberculosis in Zebrafish. Biomacromolecules 2019; 20:1798-1815. [PMID: 30785284 DOI: 10.1021/acs.biomac.9b00214] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Mycobacterium tuberculosis, the etiologic agent of tuberculosis, is an intracellular pathogen of alveolar macrophages. These cells avidly take up nanoparticles, even without the use of specific targeting ligands, making the use of nanotherapeutics ideal for the treatment of such infections. Methoxy poly(ethylene oxide)- block-poly(ε-caprolactone) nanoparticles of several different polymer blocks' molecular weights and sizes (20-110 nm) were developed and critically compared as carriers for rifampicin, a cornerstone in tuberculosis therapy. The polymeric nanoparticles' uptake, consequent organelle targeting and intracellular degradation were shown to be highly dependent on the nanoparticles' physicochemical properties (the cell uptake half-lives 2.4-21 min, the degradation half-lives 51.6 min-ca. 20 h after the internalization). We show that the nanoparticles are efficiently taken up by macrophages and are able to effectively neutralize the persisting bacilli. Finally, we demonstrate, using a zebrafish model of tuberculosis, that the nanoparticles are well tolerated, have a curative effect, and are significantly more efficient compared to a free form of rifampicin. Hence, these findings demonstrate that this system shows great promise, both in vitro and in vivo, for the treatment of tuberculosis.
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Affiliation(s)
- Jiří Trousil
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic.,Department of Analytical Chemistry, Faculty of Science , Charles University , Hlavova 8 , 128 43 Prague 2 , Czech Republic
| | - Zdeňka Syrová
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Albertov 4 , 128 00 Prague 2 , Czech Republic
| | - Nils-Jørgen K Dal
- Department of Biosciences , University of Oslo , Blindernveien 31 , 0371 Oslo , Norway
| | - Dmytro Rak
- Institute of Experimental Physics , Slovak Academy of Sciences , Watsonova 47 , 040 01 Košice , Slovakia
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Ewa Pavlova
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Jana Matějková
- Department of Medical Microbiology, Second Faculty of Medicine , Charles University and Motol University Hospital , V Úvalu 84 , 150 06 Prague 5 , Czech Republic
| | - Dušan Cmarko
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Albertov 4 , 128 00 Prague 2 , Czech Republic
| | - Pavla Kubíčková
- Center of Biological Defense , Military Health Institute, Military Medical Agency , 561 66 Těchonín , Czech Republic
| | - Oto Pavliš
- Center of Biological Defense , Military Health Institute, Military Medical Agency , 561 66 Těchonín , Czech Republic
| | - Tomáš Urbánek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Marián Sedlák
- Institute of Experimental Physics , Slovak Academy of Sciences , Watsonova 47 , 040 01 Košice , Slovakia
| | - Federico Fenaroli
- Department of Biosciences , University of Oslo , Blindernveien 31 , 0371 Oslo , Norway
| | - Ivan Raška
- Institute of Biology and Medical Genetics, First Faculty of Medicine , Charles University and General University Hospital in Prague , Albertov 4 , 128 00 Prague 2 , Czech Republic
| | - Petr Štěpánek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského náměstí 2 , 162 00 Prague 6 , Czech Republic
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Świętek M, Lu YC, Konefał R, Ferreira LP, Cruz MM, Ma YH, Horák D. Scavenging of reactive oxygen species by phenolic compound-modified maghemite nanoparticles. Beilstein J Nanotechnol 2019; 10:1073-1088. [PMID: 31165034 PMCID: PMC6541338 DOI: 10.3762/bjnano.10.108] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 05/03/2019] [Indexed: 05/16/2023]
Abstract
Maghemite (γ-Fe2O3) nanoparticles obtained through co-precipitation and oxidation were coated with heparin (Hep) to yield γ-Fe2O3@Hep, and subsequently with chitosan that was modified with different phenolic compounds, including gallic acid (CS-G), hydroquinone (CS-H), and phloroglucinol (CS-P), to yield γ-Fe2O3@Hep-CS-G, γ-Fe2O3@Hep-CS-H, and γ-Fe2O3@Hep-CS-P particles, respectively. Surface modification of the particles was analyzed by transmission electron microscopy, dynamic light scattering, attenuated total reflection Fourier transform infrared spectroscopy, and thermogravimetric analysis. Magnetic measurements indicated that the polymer coating does not affect the superparamagnetic character of the iron oxide core. However, magnetic saturation decreased with increasing thickness of the polymer coating. The antioxidant properties of the nanoparticles were analyzed using a 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. Cellular uptake and intracellular antioxidant activity of the particles were evaluated by an iron assay and flow cytometry, respectively, using L-929 and LN-229 cells. Compared to the control, the phenolic modification significantly reduced intracellular reactive oxygen species (ROS) levels to 35-56%, which was associated with a 6-8-times higher cellular uptake in L-929 cells and a 21-31-times higher cellular uptake in LN-229 cells. In contrast, γ-Fe2O3@Hep particles induced a 3.8-times and 14.9-times higher cellular uptake without inducing antioxidant activity. In conclusion, the high cellular uptake and the antioxidant properties associated with the phenolic moieties in the modified particles allow for a potential application in biomedical areas.
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Affiliation(s)
- Małgorzata Świętek
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Yi-Chin Lu
- Department of Physiology and Pharmacology and Healthy Aging Research Center, College of Medicine, Chang Gung University, Guishan, Taoyuan 33302, Taiwan, ROC
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Liliana P Ferreira
- Physics Department, University of Coimbra, Coimbra 3004-516, Portugal
- BioISI, Biosystems and Integrative Sciences, Faculdade de Ciências, Universidade de Lisboa, Lisboa 1749-016, Portugal
| | - M Margarida Cruz
- BioISI, Biosystems and Integrative Sciences, Faculdade de Ciências, Universidade de Lisboa, Lisboa 1749-016, Portugal
| | - Yunn-Hwa Ma
- Department of Physiology and Pharmacology and Healthy Aging Research Center, College of Medicine, Chang Gung University, Guishan, Taoyuan 33302, Taiwan, ROC
| | - Daniel Horák
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
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Bojarová P, Tavares MR, Laaf D, Bumba L, Petrásková L, Konefał R, Bláhová M, Pelantová H, Elling L, Etrych T, Chytil P, Křen V. Biocompatible glyconanomaterials based on HPMA-copolymer for specific targeting of galectin-3. J Nanobiotechnology 2018; 16:73. [PMID: 30236114 PMCID: PMC6146777 DOI: 10.1186/s12951-018-0399-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 09/11/2018] [Indexed: 01/01/2023] Open
Abstract
Background Galectin-3 (Gal-3) is a promising target in cancer therapy with a high therapeutic potential due to its abundant localization within the tumor tissue and its involvement in tumor development and proliferation. Potential clinical application of Gal-3-targeted inhibitors is often complicated by their insufficient selectivity or low biocompatibility. Nanomaterials based on N-(2-hydroxypropyl)methacrylamide (HPMA) nanocarrier are attractive for in vivo application due to their good water solubility and lack of toxicity and immunogenicity. Their conjugation with tailored carbohydrate ligands can yield specific glyconanomaterials applicable for targeting biomedicinally relevant lectins like Gal-3. Results In the present study we describe the synthesis and the structure-affinity relationship study of novel Gal-3-targeted glyconanomaterials, based on hydrophilic HPMA nanocarriers. HPMA nanocarriers decorated with varying amounts of Gal-3 specific epitope GalNAcβ1,4GlcNAc (LacdiNAc) were analyzed in a competitive ELISA-type assay and their binding kinetics was described by surface plasmon resonance. We showed the impact of various linker types and epitope distribution on the binding affinity to Gal-3. The synthesis of specific functionalized LacdiNAc epitopes was accomplished under the catalysis by mutant β-N-acetylhexosaminidases. The glycans were conjugated to statistic HPMA copolymer precursors through diverse linkers in a defined pattern and density using Cu(I)-catalyzed azide–alkyne cycloaddition. The resulting water-soluble and structurally flexible synthetic glyconanomaterials exhibited affinity to Gal-3 in low μM range. Conclusions The results of this study reveal the relation between the linker structure, glycan distribution and the affinity of the glycopolymer nanomaterial to Gal-3. They pave the way to specific biomedicinal glyconanomaterials that target Gal-3 as a therapeutic goal in cancerogenesis and other disorders. Electronic supplementary material The online version of this article (10.1186/s12951-018-0399-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- P Bojarová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic.
| | - M R Tavares
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovský Sq. 2, 16206, Prague 6, Czech Republic
| | - D Laaf
- Laboratory for Biomaterials, Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstraße 20, 52074, Aachen, Germany
| | - L Bumba
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
| | - L Petrásková
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
| | - R Konefał
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovský Sq. 2, 16206, Prague 6, Czech Republic
| | - M Bláhová
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovský Sq. 2, 16206, Prague 6, Czech Republic
| | - H Pelantová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
| | - L Elling
- Laboratory for Biomaterials, Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstraße 20, 52074, Aachen, Germany
| | - T Etrych
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovský Sq. 2, 16206, Prague 6, Czech Republic
| | - P Chytil
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovský Sq. 2, 16206, Prague 6, Czech Republic.
| | - V Křen
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 14220, Prague 4, Czech Republic
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Konefał R, Spěváček J, Černoch P. Thermoresponsive poly(2-oxazoline) homopolymers and copolymers in aqueous solutions studied by NMR spectroscopy and dynamic light scattering. Eur Polym J 2018. [DOI: 10.1016/j.eurpolymj.2018.01.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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37
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Jäger A, Jäger E, Giacomelli FC, Nallet F, Steinhart M, Putaux JL, Konefał R, Spěváček J, Ulbrich K, Štěpánek P. Structural changes on polymeric nanoparticles induced by hydrophobic drug entrapment. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.10.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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38
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Spěváček J, Konefał R, Dybal J, Čadová E, Kovářová J. Thermoresponsive behavior of block copolymers of PEO and PNIPAm with different architecture in aqueous solutions: A study by NMR, FTIR, DSC and quantum-chemical calculations. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.07.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Perchacz M, Donato RK, Seixas L, Zhigunov A, Konefał R, Serkis-Rodzeń M, Beneš H. Ionic Liquid-Silica Precursors via Solvent-Free Sol-Gel Process and Their Application in Epoxy-Amine Network: A Theoretical/Experimental Study. ACS Appl Mater Interfaces 2017; 9:16474-16487. [PMID: 28443326 DOI: 10.1021/acsami.7b02631] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
This work describes the solvent-free sol-gel synthesis of epoxy-functionalized silica-based precursors in the presence of 1-butyl-3-methylimidazolium-based ionic liquids (ILs) containing different anions: chloride (Cl-) and methanesulfonate (MeSO3-). The IL-driven sol-gel mechanisms were investigated in detail using experimental characterizations (29Si NMR and ATR FTIR spectroscopy) and a theoretical computational method based on density functional theory (DFT). We observed complex IL influence on both hydrolysis and condensation steps, involving especially H-bonding and Coulomb coupling stabilization of the process intermediates. The obtained IL-silica precursors and their further xerogels were widely characterized (rheology measurements, MALDI TOF, 29Si NMR, ATR FTIR, and DFT simulation), which allowed observation of their precise silica structures and established their most energetically favorable conformations. The detected silica structures were dependent on the IL type and varied from highly condensed 3D cage-like to branched ladder-like and cyclic ones. The application of prepared IL-silica precursors as reinforcing additives into the epoxy-amine network led to an improvement in the organic/inorganic interphase interactions through chemical and physical bonding. Uniform and well-dispersed silica aggregates, in the size of ∼30 nm, were formed when ≤6.8 wt % of each IL-silica precursor was applied into the epoxy-amine network. The use of imidazolium-based ILs contributed to a significant improvement in thermomechanical properties of hybrids and reduced their UV absorption ability compared to that of the reference matrix. All hybrids exhibited an increase in energy to break (up to ∼53%), elongation at break (up to ∼43%), shear storage modulus in the rubbery region (up to 4 times), and thermo-oxidative stability.
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Affiliation(s)
- Magdalena Perchacz
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Ricardo Keitel Donato
- MackGraphe-Graphene and Nanomaterials Research Center, Mackenzie Presbyterian University , Rua da Consolação 896, São Paulo 01302-907, SP Brazil
| | - Leandro Seixas
- MackGraphe-Graphene and Nanomaterials Research Center, Mackenzie Presbyterian University , Rua da Consolação 896, São Paulo 01302-907, SP Brazil
| | - Alexander Zhigunov
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Magdalena Serkis-Rodzeń
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Hynek Beneš
- Institute of Macromolecular Chemistry AS CR , v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
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Strachota B, Matějka L, Sikora A, Spěváček J, Konefał R, Zhigunov A, Šlouf M. Insight into the cryopolymerization to form a poly(N-isopropylacrylamide)/clay macroporous gel: structure and phase evolution. Soft Matter 2017; 13:1244-1256. [PMID: 28117862 DOI: 10.1039/c6sm02278b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The cryopolymerization and formation of a macroporous poly(N-isopropylacrylamide) (PNIPA)/clay cryogel were investigated. The mechanism of the cryopolymerization and cryogel formation was elucidated. Two processes, cryostructuration and cryopolymerization, proceed simultaneously and their relative rates determine the structure evolution and the cryogel morphology - porosity. The cryostructuration in the PNIPA/clay system during freezing, controlled by the freezing temperature and the rate of cooling, includes both water and NIPA crystallization, formation of a highly concentrated non-frozen liquid phase (NFLP) and clay aggregation. The rate of cryopolymerization and gelation is governed by the following effects: by a low polymerization temperature and after freezing, by the high cryoconcentration and a steric confinement, manifested by a reduced reagent mobility. Moreover, it depends on the cooling rate and the evolution of cryostructuration. The progress of cryostructuration and cryopolymerization during freezing was described and experimentally proved step by step. Both the phase development during freezing and the progress of cryopolymerization including gelation were monitored in situ by NMR, DSC, chemorheology and SAXS. The morphology and porosity of the cryogels were characterized by SEM and TEM.
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Affiliation(s)
- Beata Strachota
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Libor Matějka
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Antonín Sikora
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Jiří Spěváček
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Alexander Zhigunov
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
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41
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Bojarová P, Chytil P, Mikulová B, Bumba L, Konefał R, Pelantová H, Krejzová J, Slámová K, Petrásková L, Kotrchová L, Cvačka J, Etrych T, Křen V. Glycan-decorated HPMA copolymers as high-affinity lectin ligands. Polym Chem 2017. [DOI: 10.1039/c7py00271h] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
New conjugates of N-(2-hydroxypropyl) methacrylamide (HPMA) copolymers tethered with chitooligosaccharidic epitopes of varying lengths are potent ligands of wheat germ agglutinin, reaching subnanomolar binding affinities.
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42
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Höcherl A, Jäger E, Jäger A, Hrubý M, Konefał R, Janoušková O, Spěváček J, Jiang Y, Schmidt PW, Lodge TP, Štěpánek P. One-pot synthesis of reactive oxygen species (ROS)-self-immolative polyoxalate prodrug nanoparticles for hormone dependent cancer therapy with minimized side effects. Polym Chem 2017. [DOI: 10.1039/c7py00270j] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
One-pot synthesis of ROS-self-immolative polyoxalate prodrug NPs for cancer therapy.
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Affiliation(s)
- Anita Höcherl
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Eliézer Jäger
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Alessandro Jäger
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Martin Hrubý
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Olga Janoušková
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Jiří Spěváček
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Yaming Jiang
- Department of Chemistry
- University of Minnesota
- Minneapolis
- USA
| | | | | | - Petr Štěpánek
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
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43
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Holubova M, Konefał R, Moravkova Z, Zhigunov A, Svoboda J, Pop-Georgievski O, Hromadkova J, Groborz O, Stepanek P, Hruby M. Carbon nanospecies affecting amyloid formation. RSC Adv 2017. [DOI: 10.1039/c7ra11296c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Carbon nanospecies (fullerenes, carbon nanotubes, nanodiamonds, carbon quantum dots) were tested for amyloidogenicity to estimate their potential as health hazards.
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Affiliation(s)
- M. Holubova
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
- Charles University in Prague
| | - R. Konefał
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - Z. Moravkova
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - A. Zhigunov
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - J. Svoboda
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - O. Pop-Georgievski
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - J. Hromadkova
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - O. Groborz
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - P. Stepanek
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
| | - M. Hruby
- Institute of Macromolecular Chemistry
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6
- Czech Republic
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44
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Konefał R, Spěváček J, Jäger E, Petrova S. Thermoresponsive behaviour of terpolymers containing poly(ethylene oxide), poly(2-ethyl-2-oxazoline) and poly(ε-caprolactone) blocks in aqueous solutions: an NMR study. Colloid Polym Sci 2016. [DOI: 10.1007/s00396-016-3930-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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45
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Petrova S, Klepac D, Konefał R, Kereïche S, Kováčik L, Filippov SK. Synthesis and Solution Properties of PCL-b-PHPMA Diblock Copolymers Containing Stable Nitroxyl Radicals. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01187] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Svetlana Petrova
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Damir Klepac
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Sami Kereïche
- Institute
of Cellular Biology and Pathology, First Faculty of Medicine, Charles University in Prague, Albertov 4, 128 01 Prague 2, Czech Republic
| | - Lubomír Kováčik
- Institute
of Cellular Biology and Pathology, First Faculty of Medicine, Charles University in Prague, Albertov 4, 128 01 Prague 2, Czech Republic
| | - Sergey K. Filippov
- Institute of Macromolecular
Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
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46
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Jäger E, Höcherl A, Janoušková O, Jäger A, Hrubý M, Konefał R, Netopilik M, Pánek J, Šlouf M, Ulbrich K, Štěpánek P. Fluorescent boronate-based polymer nanoparticles with reactive oxygen species (ROS)-triggered cargo release for drug-delivery applications. Nanoscale 2016; 8:6958-6963. [PMID: 26961769 DOI: 10.1039/c6nr00791k] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A new drug-delivery system of polymer nanoparticles (NPs) bearing pinacol-type boronic ester and alkyne moieties displaying triggered self-immolative polymer degradation in the presence of reactive oxygen species (ROS) with the capability of cellular imaging is presented. The NPs specifically release their drug cargo under concentrations of ROS that are commonly found in the intracellular environment of certain tumors and of inflamed tissues and exhibit significant cytotoxicity to cancer cells compared to their non-ROS-responsive counterparts.
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Affiliation(s)
- Eliézer Jäger
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Anita Höcherl
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Olga Janoušková
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Alessandro Jäger
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Martin Hrubý
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Rafał Konefał
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Miloš Netopilik
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Jiří Pánek
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Karel Ulbrich
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Petr Štěpánek
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
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47
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Affiliation(s)
- Jiří Spěváček
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovský Sq. 2, 162 06 Prague 6 Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovský Sq. 2, 162 06 Prague 6 Czech Republic
| | - Eva Čadová
- Institute of Macromolecular Chemistry; Academy of Sciences of the Czech Republic; Heyrovský Sq. 2, 162 06 Prague 6 Czech Republic
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48
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Strachota B, Matějka L, Zhigunov A, Konefał R, Spěváček J, Dybal J, Puffr R. Poly(N-isopropylacrylamide)-clay based hydrogels controlled by the initiating conditions: evolution of structure and gel formation. Soft Matter 2015; 11:9291-9306. [PMID: 26428943 DOI: 10.1039/c5sm01996f] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The formation of the hydrogel poly(N-isopropylacrylamide)-clay (LAPONITE®) by redox polymerization was investigated, and the main factors governing the gel build-up were determined. The significant effect of the redox initiating system ammonium peroxodisulfate (APS) and tetramethylethylenediamine (TEMED) on gel formation and structure was established, making it possible to control the structure of the gel. Moreover, the pre-reaction stage involving the quality of the clay exfoliation in an aqueous suspension and the interaction of reaction components with the clay play a role in controlling the polymerization and gel structure. The molecular and phase structure evolution during polymerization was followed in situ by the following independent techniques: Fourier transform infrared spectroscopy (FTIR), chemorheology, small-angle X-ray scattering (SAXS) and ultraviolet-visible spectroscopy (UV/Vis). The combination of these methods enabled us to describe in detail particular progress stages during the gel formation and determine the correlation of the corresponding processes on a time and conversion scale. The mechanism of gel formation was refined based on these experimental results.
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Affiliation(s)
- Beata Strachota
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Libor Matějka
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Alexander Zhigunov
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Jiří Spěváček
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Jiří Dybal
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Rudolf Puffr
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
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49
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Jäger E, Donato RK, Perchacz M, Jäger A, Surman F, Höcherl A, Konefał R, Donato KZ, Venturini CG, Bergamo VZ, Schrekker HS, Fuentefria AM, Raucci MG, Ambrosio L, Štěpánek P. Biocompatible succinic acid-based polyesters for potential biomedical applications: fungal biofilm inhibition and mesenchymal stem cell growth. RSC Adv 2015. [DOI: 10.1039/c5ra15858c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Poly(alkene succinates) are promising materials for specialized medical devices and tissue engineering, presenting intrinsic properties, such as; fungal biofilm inhibition, biocompatibility and stem cells controlled growth promotion.
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50
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Petrova S, Jäger E, Konefał R, Jäger A, Venturini CG, Spěváček J, Pavlova E, Štěpánek P. Novel poly(ethylene oxide monomethyl ether)-b-poly(ε-caprolactone) diblock copolymers containing a pH-acid labile ketal group as a block linkage. Polym Chem 2014. [DOI: 10.1039/c4py00114a] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Acidic physiological conditions trigger degradation of amphiphilic block copolymers containing a ketal group as a block linkage into biocompatible degradation products.
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Affiliation(s)
- S. Petrova
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6, Czech Republic
| | - E. Jäger
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6, Czech Republic
| | - R. Konefał
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6, Czech Republic
| | - A. Jäger
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6, Czech Republic
| | - C. G. Venturini
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6, Czech Republic
| | - J. Spěváček
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6, Czech Republic
| | - E. Pavlova
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6, Czech Republic
| | - P. Štěpánek
- Institute of Macromolecular Chemistry v.v.i
- Academy of Sciences of the Czech Republic
- 162 06 Prague 6, Czech Republic
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