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Quaternized Poly( N, N'-dimethylaminoethyl methacrylate) Star Nanostructures in the Solution and on the Surface. Polymers (Basel) 2023; 15:polym15051260. [PMID: 36904499 PMCID: PMC10007306 DOI: 10.3390/polym15051260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/23/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
Antibacterial polymeric materials are promising in the fight against resistant bacteria strains. Amongst them, cationic macromolecules with quaternary ammonium groups are one of intensively studied, as they interact with the bacterial membranes causing cell death. In this work, we propose to use nanostructures composed of polycations with star topology for the preparation of antibacterial materials. First, star polymers of N,N'-dimethylaminoethyl methacrylate and hydroxyl-bearing oligo(ethylene glycol) methacrylate P(DMAEMA-co-OEGMA-OH) were quaternized with various bromoalkanes and their solution behavior was studied. It was shown that in water two modes of star nanoparticles were observed, of diameters about 30 nm and up to 125 nm, independently of the quaternizing agent. Separately layers of P(DMAEMA-co-OEGMA-OH) stars were obtained. In this case, the chemical grafting of polymers to the silicon wafers modified with imidazole derivatives was applied, followed by the quaternization of the amino groups of polycations. A comparison of the quaternary reaction in solution and on the surface showed that in the solution it is influenced by the alkyl chain length of the quaternary agent, while on the surface such relationship is not observed. After physico-chemical characterization of the obtained nanolayers, their biocidal activity was tested against two strains of bacteria E. coli and B. subtilis. The best antibacterial properties exhibited layers quaternized with shorter alkyl bromide, where 100% growth inhibition of E. coli and B. subtilis after 24 h of contact was observed.
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Sentoukas T, Forys A, Marcinkowski A, Otulakowski L, Pispas S, Trzebicka B. Poly(oligoethylene glycol methacrylate) Star‐Shaped Copolymers with Hydroxypropyl Methacrylate Cores. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202200115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Theodore Sentoukas
- Center of Polymers and Carbon Materials Polish Academy of Sciences Marii Skłodowskiej‐Curie 34 Zabrze 41‐819 Poland
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation 48 Vassileos Constantinou Ave. Athens 11635 Greece
| | - Aleksander Forys
- Center of Polymers and Carbon Materials Polish Academy of Sciences Marii Skłodowskiej‐Curie 34 Zabrze 41‐819 Poland
| | - Andrzej Marcinkowski
- Center of Polymers and Carbon Materials Polish Academy of Sciences Marii Skłodowskiej‐Curie 34 Zabrze 41‐819 Poland
| | - Lukasz Otulakowski
- Center of Polymers and Carbon Materials Polish Academy of Sciences Marii Skłodowskiej‐Curie 34 Zabrze 41‐819 Poland
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation 48 Vassileos Constantinou Ave. Athens 11635 Greece
| | - Barbara Trzebicka
- Center of Polymers and Carbon Materials Polish Academy of Sciences Marii Skłodowskiej‐Curie 34 Zabrze 41‐819 Poland
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Teper P, Oleszko-Torbus N, Bochenek M, Hajduk B, Kubacki J, Jałowiecki Ł, Płaza G, Kowalczuk A, Mendrek B. Hybrid nanolayers of star polymers and silver nanoparticles with antibacterial activity. Colloids Surf B Biointerfaces 2022; 213:112404. [PMID: 35151043 DOI: 10.1016/j.colsurfb.2022.112404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/04/2022] [Accepted: 02/05/2022] [Indexed: 02/04/2023]
Abstract
The aim of this study was to obtain stable star polymer layers with incorporated silver nanoparticles (AgNPs) and to study the antimicrobial activity of these hybrid materials. In this work, a novel approach regarding the synthesis of AgNPs directly by the star polymer layer is presented. Nanolayers of poly(N,N'-dimethylaminoethyl methacrylate) and hydroxyl-bearing poly[oligo(ethylene glycol) methacrylate] (P(DMAEMA-co-OEGMA-OH)) stars, covalently bound with solid supports, were obtained through chemical reaction of hydroxyl groups in the star arms with substrate modified with imidazole derivative. Quantitative chemical composition analysis and tracking of the changes in the morphology and wettability after every step of surface modification confirmed the covalent attachment of stars with the support. In the next step, the polymer nanolayers were modified with AgNPs formed in situ using only amine groups of the star arms and followed by the crystal quartz microbalance (QCM). The analysis of the layer thickness and affinity to water, both with the shape, size and amount of silver incorporated into the layer, confirmed the efficacy of AgNPs formation. The amount of silver incorporated into layers was correlated with the molar masses of the grafted stars, and a possible location of AgNPs within layers was shown. The antibacterial activity tests of prepared nanolayers showed that obtained hybrid materials were highly effective against both gram-positive and gram-negative bacteria strains. This study shows that the obtained layers are promising as stable coatings for antibacterial applications.
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Affiliation(s)
- Paulina Teper
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Natalia Oleszko-Torbus
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Marcelina Bochenek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Barbara Hajduk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Jerzy Kubacki
- A. Chelkowski Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland; Silesian Center for Education and Interdisciplinary Research, 75 Pulku Piechoty 1 A, 41-500 Chorzow, Poland
| | - Łukasz Jałowiecki
- Institute for Ecology of Industrial Areas, Kossutha 6, 40-844 Katowice, Poland
| | - Grażyna Płaza
- Silesian University of Technology, Faculty of Organization & Management, Roosevelta 26, 41-800 Zabrze, Poland
| | - Agnieszka Kowalczuk
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
| | - Barbara Mendrek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland.
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Hu Y, Gao S, Khan AR, Yang X, Ji J, Xi Y, Zhai G. Tumor microenvironment-responsive size-switchable drug delivery nanosystems. Expert Opin Drug Deliv 2022; 19:221-234. [PMID: 35164610 DOI: 10.1080/17425247.2022.2042512] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
INTRODUCTION Compared with ordinary chemotherapeutic drugs, the variable-size nanoparticles (NPs) have better therapeutic effects and fewer side effects. AREAS COVERED This review mainly summarizes the strategies used to construct smart, size-tunable nanocarriers based on characteristic factors of tumor microenvironment (TME) to dramatically increase the penetration and retention of drugs within tumors. EXPERT OPINION Nanosystems with changeable sizes based on the TME have been extensively studied in the past decade, and their permeability and retention have been greatly improved, making them a very promising treatment for tumors.
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Affiliation(s)
- Yue Hu
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Shan Gao
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Abdur Rauf Khan
- Government of Punjab, Specialized HealthCare and Medical Education Department, Lahore, Pakistan
| | - Xiaoye Yang
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Jianbo Ji
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Yanwei Xi
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Guangxi Zhai
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
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Chrysostomou V, Forys A, Trzebicka B, Demetzos C, Pispas S. Structure of micelleplexes formed between QPDMAEMA-b-PLMA amphiphilic cationic copolymer micelles and DNA of different lengths. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111048] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Kalinova R, Valchanova M, Dimitrov I, Turmanova S, Ugrinova I, Petrova M, Vlahova Z, Rangelov S. Functional Polyglycidol-Based Block Copolymers for DNA Complexation. Int J Mol Sci 2021; 22:9606. [PMID: 34502513 PMCID: PMC8431755 DOI: 10.3390/ijms22179606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 01/04/2023] Open
Abstract
Gene therapy is an attractive therapeutic method for the treatment of genetic disorders for which the efficient delivery of nucleic acids into a target cell is critical. The present study is aimed at evaluating the potential of copolymers based on linear polyglycidol to act as carriers of nucleic acids. Functional copolymers with linear polyglycidol as a non-ionic hydrophilic block and a second block bearing amine hydrochloride pendant groups were prepared using previously synthesized poly(allyl glycidyl ether)-b-polyglycidol block copolymers as precursors. The amine functionalities were introduced via highly efficient radical addition of 2-aminoethanethiol hydrochloride to the alkene side groups. The modified copolymers formed loose aggregates with strongly positive surface charge in aqueous media, stabilized by the presence of dodecyl residues at the end of the copolymer structures and the hydrogen-bonding interactions in polyglycidol segments. The copolymer aggregates were able to condense DNA into stable and compact nanosized polyplex particles through electrostatic interactions. The copolymers and the corresponding polyplexes showed low to moderate cytotoxicity on a panel of human cancer cell lines. The cell internalization evaluation demonstrated the capability of the polyplexes to successfully deliver DNA into the cancer cells.
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Affiliation(s)
- Radostina Kalinova
- Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Miroslava Valchanova
- Department of Material Science and Technology, University “Prof. Assen Zlatarov”, 8010 Burgas, Bulgaria; (M.V.); (S.T.)
| | - Ivaylo Dimitrov
- Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
| | - Sevdalina Turmanova
- Department of Material Science and Technology, University “Prof. Assen Zlatarov”, 8010 Burgas, Bulgaria; (M.V.); (S.T.)
| | - Iva Ugrinova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.P.); (Z.V.)
| | - Maria Petrova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.P.); (Z.V.)
| | - Zlatina Vlahova
- Institute of Molecular Biology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (M.P.); (Z.V.)
| | - Stanislav Rangelov
- Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria;
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Oleszko-Torbus N, Mendrek B, Kowalczuk A, Wałach W, Trzebicka B, Utrata-Wesołek A. The Role of Polymer Structure in Formation of Various Nano- and Microstructural Materials: 30 Years of Research in the Laboratory of Nano- and Microstructural Materials at the Centre of Polymer and Carbon Materials PAS. Polymers (Basel) 2021; 13:2892. [PMID: 34502932 PMCID: PMC8434041 DOI: 10.3390/polym13172892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022] Open
Abstract
The review summarizes the research carried out in the Laboratory of Nano- and Microstructural Materials at the Centre of Polymer and Carbon Materials, Polish Academy of Sciences (CMPW PAS). Studies carried out for many years under the guidance of Professor Andrzej Dworak led to the development and exploration of the mechanisms of oxirane and cyclic imine polymerization and controlled radical polymerization of methacrylate monomers. Based on that knowledge, within the last three decades, macromolecules with the desired composition, molar mass and topology were obtained and investigated. The ability to control the structure of the synthesized polymers turned out to be important, as it provided a way to tailor the physiochemical properties of the materials to their specific uses. Many linear polymers and copolymers as well as macromolecules with branched, star, dendritic and hyperbranched architectures were synthesized. Thanks to the applied controlled polymerization techniques, it was possible to obtain hydrophilic, hydrophobic, amphiphilic and stimulus-sensitive polymers. These tailor-made polymers with controlled properties were used for the construction of various types of materials, primarily on the micro- and nanoscales, with a wide range of possible applications, mainly in biomedicine. The diverse topology of polymers, and thus their properties, made it possible to obtain various types of polymeric nanostructures and use them as nanocarriers by encapsulation of biologically active substances. Additionally, polymer layers were obtained with features useful in medicine, particularly regenerative medicine and tissue engineering.
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Affiliation(s)
| | | | | | | | - Barbara Trzebicka
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-819 Zabrze, Poland; (N.O.-T.); (B.M.); (A.K.); (W.W.)
| | - Alicja Utrata-Wesołek
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 41-819 Zabrze, Poland; (N.O.-T.); (B.M.); (A.K.); (W.W.)
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Alternative to Poly(2-isopropyl-2-oxazoline) with a Reduced Ability to Crystallize and Physiological LCST. Int J Mol Sci 2021; 22:ijms22042221. [PMID: 33672348 PMCID: PMC7926427 DOI: 10.3390/ijms22042221] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/19/2021] [Accepted: 02/20/2021] [Indexed: 12/13/2022] Open
Abstract
In this work, we sought to examine whether the presence of alkyl substituents randomly distributed within the main chain of a 2-isopropyl-2-oxazoline-based copolymer will decrease its ability to crystallize when compared to its homopolymer. At the same time, we aimed to ensure an appropriate hydrophilic/lipophilic balance in the copolymer and maintain the phase transition in the vicinity of the human body temperature. For this reason, copolymers of 2-ethyl-4-methyl-2-oxazoline and 2-isopropyl-2-oxazoline were synthesized. The thermoresponsive behavior of the copolymers in water, the influence of salt on the cloud point, the presence of hysteresis of the phase transition and the crystallization ability in a water solution under long-term heating conditions were studied by turbidimetry. The ability of the copolymers to crystallize in the solid state, and their thermal properties, were analyzed by differential scanning calorimetry and X-ray diffractometry. A cytotoxicity assay was used to estimate the viability of human fibroblasts in the presence of the obtained polymers. The results allowed us to demonstrate a nontoxic alternative to poly(2-isopropyl-2-oxazoline) (PiPrOx) with a physiological phase transition temperature (LCST) and a greatly reduced tendency to crystallize. The synthesis of 2-oxazoline polymers with such well-defined properties is important for future biomedical applications.
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