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Kronek J, Minarčíková A, Kroneková Z, Majerčíková M, Strasser P, Teasdale I. Poly(2-isopropenyl-2-oxazoline) as a Versatile Functional Polymer for Biomedical Applications. Polymers (Basel) 2024; 16:1708. [PMID: 38932057 PMCID: PMC11207257 DOI: 10.3390/polym16121708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/16/2024] [Accepted: 05/23/2024] [Indexed: 06/28/2024] Open
Abstract
Functional polymers play an important role in various biomedical applications. From many choices, poly(2-isopropenyl-2-oxazoline) (PIPOx) represents a promising reactive polymer with great potential in various biomedical applications. PIPOx, with pendant reactive 2-oxazoline groups, can be readily prepared in a controllable manner via several controlled/living polymerization methods, such as living anionic polymerization, atom transfer radical polymerization (ATRP), reversible addition-fragmentation transfer (RAFT) or rare earth metal-mediated group transfer polymerization. The reactivity of pendant 2-oxazoline allows selective reactions with thiol and carboxylic group-containing compounds without the presence of any catalyst. Moreover, PIPOx has been demonstrated to be a non-cytotoxic polymer with immunomodulative properties. Post-polymerization functionalization of PIPOx has been used for the preparation of thermosensitive or cationic polymers, drug conjugates, hydrogels, brush-like materials, and polymer coatings available for drug and gene delivery, tissue engineering, blood-like materials, antimicrobial materials, and many others. This mini-review covers new achievements in PIPOx synthesis, reactivity, and use in biomedical applications.
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Affiliation(s)
- Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Alžbeta Minarčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Zuzana Kroneková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Monika Majerčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia; (A.M.); (Z.K.); (M.M.)
| | - Paul Strasser
- Institute of Polymer Chemistry, Johannes Kepler University, Altenbergerstrasse 69, 4040 Linz, Austria; (P.S.); (I.T.)
| | - Ian Teasdale
- Institute of Polymer Chemistry, Johannes Kepler University, Altenbergerstrasse 69, 4040 Linz, Austria; (P.S.); (I.T.)
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2
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Kroneková Z, Majerčíková M, Paulovičová E, Minarčíková A, Danko M, Markus J, Letasiova S, Kronek J. Cytotoxicity and Bioimmunological Activity of Poly(2-Isopropenyl-2-oxazoline) Conjugates with Ibuprofen Using 3D Reconstructed Tissue Models. Biomacromolecules 2024; 25:3288-3301. [PMID: 38805352 DOI: 10.1021/acs.biomac.3c01434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Poly(2-isopropenyl-2-oxazoline) (PIPOx) represents a universal polymer platform with pendant 2-oxazoline groups, allowing the preparation of biomaterials for various biomedical applications. However, there is a lack of information on PIPOx concerning the effect of molar mass (Mn) on cytotoxicity and bioimmunological properties. Here, aqueous copper(0)-mediated reversible-deactivation radical polymerization (Cu0-RDPR) was used for the preparation of PIPOx with defined Mn and low dispersity. PIPOx of different Mn are used for the synthesis of conjugates with ibuprofen (5 mol %), the nonsteroidal anti-inflammatory drug. The release of ibuprofen at 37 °C and different pH values is monitored using high-performance liquid chromatography, where the rate of drug release increases with increasing pH and lower Mn. In vitro cytotoxicity and bioimmunological properties of PIPOx and drug conjugates are studied using 3D reconstructed tissue models of the human epidermis and intestinal epithelium. We demonstrate low cytotoxicity of PIPOx and conjugates with different Mn values on both 3D tissue models.
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Affiliation(s)
- Zuzana Kroneková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Monika Majerčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Ema Paulovičová
- Department of Glycomaterials, Immunology & Cell Culture Laboratories, Center for Glycomics, Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 84538 Bratislava, Slovakia
| | - Alžbeta Minarčíková
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Monika Danko
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
| | - Jan Markus
- MatTek In Vitro Life Science Laboratories, Mlynske Nivy 73, 821 05 Bratislava, Slovakia
| | - Silvia Letasiova
- MatTek In Vitro Life Science Laboratories, Mlynske Nivy 73, 821 05 Bratislava, Slovakia
| | - Juraj Kronek
- Department for Biomaterials Research, Polymer Institute of the Slovak Academy of Sciences, Dúbravská cesta 9, 845 41 Bratislava, Slovakia
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Özenler S, Alkan AA, Gunay US, Daglar O, Durmaz H, Yildiz UH. Thickness Gradient in Polymer Coating by Reactive Layer-by-Layer Assembly on Solid Substrate. ACS OMEGA 2023; 8:37413-37420. [PMID: 37841123 PMCID: PMC10568690 DOI: 10.1021/acsomega.3c05445] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 09/06/2023] [Indexed: 10/17/2023]
Abstract
The study describes a simple yet robust methodology for forming gradients in polymer coatings with nanometer-thickness precision. The thickness gradients of 0-20 nm in the coating are obtained by a reactive layer-by-layer assembly of polyester and polyethylenimine on gold substrates. Three parameters are important in forming thickness gradients: (i) the incubation time, (ii) the incubation concentration of the polymer solutions, and (iii) the tilt angle of the gold substrate during the dipping process. After examining these parameters, the characterization of the anisotropic surface obtained under the best conditions is presented in the manuscript. The thickness profile and nanomechanical characterization of the polymer gradients are characterized by atomic force microscopy. The roughness analysis has demonstrated that the coating exhibited decreasing roughness with increasing thickness. On the other hand, Young's moduli of the thin and thick coatings are 0.50 and 1.4 MPa, respectively, which assured an increase in mechanical stability with increasing coating thickness. Angle-dependent infrared spectroscopy reveals that the C-O-C ester groups of the polyesters exhibit a perpendicular orientation to the surface, while the C≡C groups are parallel to the surface. The surface properties of the polymer gradients are explored by fluorescence microscopy, proving that the dye's fluorescence intensity increases as the coating thickness increases. The significant benefit of the suggested methodology is that it promises thickness control of gradients in the coating as a consequence of the fast reaction kinetics between layers and the reaction time.
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Affiliation(s)
- Sezer Özenler
- Department
of Chemistry, Izmir Institute of Technology, Urla 35430, Izmir, Turkey
- Leibniz-Institut
für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany
| | - Ali Ata Alkan
- Department
of Polymer Science and Engineering, Izmir
Institute of Technology, Urla 35430, Izmir, Turkey
| | - Ufuk Saim Gunay
- Department
of Chemistry, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
| | - Ozgün Daglar
- Department
of Chemistry, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
| | - Hakan Durmaz
- Department
of Chemistry, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
| | - Umit Hakan Yildiz
- Department
of Chemistry, Izmir Institute of Technology, Urla 35430, Izmir, Turkey
- Department
of Polymer Science and Engineering, Izmir
Institute of Technology, Urla 35430, Izmir, Turkey
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4
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Wu D, Li W, Zhang T. Surface-Initiated Zerovalent Metal-Mediated Controlled Radical Polymerization (SI-Mt 0CRP) for Brush Engineering. Acc Chem Res 2023; 56:2329-2340. [PMID: 37616063 DOI: 10.1021/acs.accounts.3c00310] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
ConspectusThe surface-tethered polymer brush has become a powerful approach to tailoring the chemical and physical properties of surfaces and interfaces and revealed broad application prospects in widespread fields such as self-cleaning, surface lubrication, and antibiofouling. Access to these diverse functional polymer brushes is highly dependent on versatile and powerful surface-initiated controlled radical polymerization (SI-CRP) strategies. However, conventional SI-CRP typically requires oxygen exclusion, large amounts of catalysts and monomer solution, and a long reaction time, making it time-consuming and sophisticated. When using a two-plate system consisting of an initiator-bearing substrate and a metal plate, we and our collaborators introduced surface-initiated zerovalent metal-mediated controlled radical polymerization (SI-Mt0CRP). In the SI-Mt0CRP setup, a metal(0) plate (Cu, Fe, Zn, or Sn) is placed proximately to an initiator-functionalized substrate and forms a confined polymerization system which considerably simplifies the synthesis of a wide range of polymer brushes with high grafting densities over large areas (up to the meter scale).In comparison to classical SI-ATRP (catalyzed by metal salts), SI-Mt0CRP demonstrates oxygen tolerance, high controllability, good retention of chain-end functionality, and facile recyclability of the metal catalysts (i.e., metal foil/plate). Taking advantage of the confined geometry of the SI-Mt0CRP setup, polymer brushes with various conformations and architectures are easily accessible while consuming only microliter volumes of monomer solution and without complicated operations under ambient conditions. Owing to these attractive characteristics, SI-Mt0CRP has become a versatile technique for functionalizing materials for targeted applications, ranging from the areas of surface science to materials science and nanotechnology.In this Account, we summarize the recent advances of SI-Mt0CRP catalyzed by zerovalent metals (e.g., Cu, Fe, Zn, and Sn) and highlight the intrinsic advantages of the featured experimental setup, compared with the "classical" SI-CRP in which metal salt, powder, or wire is applied. We further discuss the synthetic features and proposed mechanism of SI-Mt0CRP while emphasizing the various external technologies' (including "on water" reaction, galvanic replacement, lithography, and capillary microfluidic) integrated polymerization systems. We also describe structural polymer brushes, including block copolymers, patterned and gradient structures, and arrayed and binary polymer brushes. Finally, we introduce the diverse polymer brushes that have been prepared using these techniques, with a focus on targeted and emerging applications. We anticipate that the discussion presented in this Account will promote a better understanding of the SI-Mt0CRP technique and advance the future development of practical surface brushing.
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Affiliation(s)
- Daheng Wu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Research Center for Advanced Interdisciplinary Sciences, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Wei Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Tao Zhang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- Research Center for Advanced Interdisciplinary Sciences, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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5
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Sheng W, Li W, Xu S, Du Y, Jordan R. Oxygen-Tolerant Photografting for Surface Structuring from Microliter Volumes. ACS Macro Lett 2023; 12:1100-1105. [PMID: 37470677 DOI: 10.1021/acsmacrolett.3c00354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Here, we report an oxygen-tolerant photografting technique to grow polymer brushes employing microliter volumes of monomer solution under ambient conditions. With the key advantages that include spatial control, initiator/catalyst-free nature, and high oxygen tolerance, a series of homo-, multiblock, and arbitrary patterned polymer brushes were successfully obtained by photografting. Moreover, a dual-functional surface with hydrophilic and hydrophobic properties could easily be realized by one-pot photografting. These results illustrated the practicality and versatility of this strategy, which will allow nonexperts access to polymer brush architectures and broaden the potential applications of polymer brushes.
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Affiliation(s)
- Wenbo Sheng
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Chair of Macromolecular Chemistry, Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069 Dresden, Germany
| | - Wei Li
- Chair of Macromolecular Chemistry, Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069 Dresden, Germany
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Shunqi Xu
- Chair for Molecular Functional Materials Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069, Dresden, Germany
| | - Yunhao Du
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Jinzhai Road 96, Hefei 230026, China
| | - Rainer Jordan
- Chair of Macromolecular Chemistry, Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069 Dresden, Germany
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Yin X, Wu D, Yang H, Wang J, Zhang X, Li H, Zheng T, Wang L, Zhang T. Galvanic-Replacement-Assisted Surface-Initiated Atom Transfer Radical Polymerization for Functional Polymer Brush Engineering. ACS Macro Lett 2022; 11:296-302. [PMID: 35575363 DOI: 10.1021/acsmacrolett.1c00781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Here we present a facile and robust strategy, namely, galvanic-replacement-assisted surface-initiated Cu(0)-mediated atom transfer radical polymerization (gr-SI-Cu0ATRP, or gr-SI-Cu0CRP) for polymer brush engineering under ambient conditions. In gr-SI-Cu0ATRP, highly active and nanostructured Cu(0) surfaces are obtained by a simple galvanic replacement on zinc/aluminum surfaces in dilute Cu2+ solution. Polymer brush growth rate is extremely high (up to ∼904 nm in 30 min polymerization); meanwhile, both nano Cu(0) surfaces and Cu2+ solution can be reused multiple times without losing grafting efficiency. We also demonstrate that the gr-SI-Cu0ATRP is advantageous for polymer brush engineering on arbitrary substrates, including flexible (polyethylene terephthalate), curved (polycarbonate), and porous (anodic aluminum oxide), and endow the substrates with various functionalities, for example, anti-icing, antifogging, and ion selectivity.
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Affiliation(s)
- Xiaodong Yin
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Daheng Wu
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Haoyong Yang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Jianing Wang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Xiaoxuan Zhang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - He Li
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Tianyue Zheng
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Liping Wang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
| | - Tao Zhang
- Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China
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7
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Jerca FA, Jerca VV, Hoogenboom R. In Vitro Assessment of the Hydrolytic Stability of Poly(2-isopropenyl-2-oxazoline). Biomacromolecules 2021; 22:5020-5032. [PMID: 34753285 DOI: 10.1021/acs.biomac.1c00994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Poly(2-isopropenyl-2-oxazoline) (PiPOx) is emerging as a promising, versatile polymer platform to design functional materials and particularly biomaterials that rely on the hydrophilic character of the 2-oxazoline side units. To be able to assess the applicability of PiPOx in a biomedical context, it is essential to understand its stability and degradation behavior in physiological conditions. In the present work, the hydrolytic stability of PiPOx was systematically investigated as a function of pH during incubation in various buffers. PiPOx was found to be stable in deionized water (pH 6.9), to have good stability in basic conditions (pH 8 and 9), to be satisfactorily stable in neutral conditions (pH 7.4), and to have moderate to low stability in acidic conditions (decreases drastically from pH 6 to pH 1.2). At pH 4, PiPOx formed a crosslinked network in a timeframe of hours, while at pH 1.2, PiPOx was transformed to a water-soluble poly(N-(2-hydroxyethyl)methacrylamide) type of structure over the course of 2 weeks. In vitro stability assays were performed in phosphate-buffered saline (pH 7.4), simulated body fluid (SBF) (pH 7.4), simulated saliva (pH 6.4), simulated intestinal fluid (pH 6.8), and plasma (pH 7.4) revealing that PiPOx is stable in these SBFs up to 1 week of incubation. When incubated in simulated gastric fluid (pH 1.2), PiPOx exhibited a similar degradation behavior to that observed in the buffer at pH 1.2, rendering a water-soluble structure. The presented results on the stability of PiPOx will be important for future use of PiPOx for the development of drug-delivery systems and biomedical applications, such as hydrogels.
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Affiliation(s)
- Florica Adriana Jerca
- Centre of Organic Chemistry "Costin D. Nenitzescu", Romanian Academy, 202B Spl. Independentei CP 35-108, 060023 Bucharest, Romania
| | - Valentin Victor Jerca
- Centre of Organic Chemistry "Costin D. Nenitzescu", Romanian Academy, 202B Spl. Independentei CP 35-108, 060023 Bucharest, Romania
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281-S4, B-9000 Ghent, Belgium
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8
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Cao Y, Liu S, Wu Z, Chen H. Synthesis and antifouling performance of tadpole-shaped poly(N-hydroxyethylacrylamide) coatings. J Mater Chem B 2021; 9:2877-2884. [PMID: 33720249 DOI: 10.1039/d0tb03015e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Linear poly(N-hydroxyethylacrylamide) (PHEAA) is regarded as one of the most promising antifouling materials because of its excellent antifouling properties and good hemocompatibility. However, the antifouling performance of topological PHEAAs remains largely unknown. Herein, the preparation of antifouling surfaces based on a tadpole-shaped PHEAA coating is reported for the first time, and how the tadpole-shaped PHEAA architecture affects antifouling performance is investigated. It is shown that the tadpole-shaped PHEAA-modified surfaces exhibit better antifouling performance than linear copolymer precursor-modified surfaces with identical molar masses and chemical compositions. This may be primarily attributed to the presence of cyclic PHEAA head chain segments in the tadpole-shaped PHEAA copolymer, and the absence of interchain entanglements can facilitate the formation of smoother and densely packed grafts, which result in better antifouling properties.
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Affiliation(s)
- Yanping Cao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
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9
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Apte G, Börke J, Rothe H, Liefeith K, Nguyen TH. Modulation of Platelet-Surface Activation: Current State and Future Perspectives. ACS APPLIED BIO MATERIALS 2020; 3:5574-5589. [PMID: 35021790 DOI: 10.1021/acsabm.0c00822] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Modulation of platelet-surface activation is important for many biomedical applications such as in vivo performance, platelet storage, and acceptance of an implant. Reducing platelet-surface activation is challenging because they become activated immediately after short contact with nonphysiological surfaces. To date, controversies and open questions in the field of platelet-surface activation still remain. Here, we review state-of-the-art approaches in inhibiting platelet-surface activation, mainly focusing on modification, patterning, and methodologies for characterization of the surfaces. As a future perspective, we discuss how the combination of biochemical and physiochemical strategies together with the topographical modulations would assist in the search for an ideal nonthrombogenic surface.
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10
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Wang F, Ren P, Bernaerts KV, Fu Y, Hu W, Zhou N, Zhang T. Thermoresponsive Poly(2-propyl-2-oxazoline) Surfaces of Glass for Nonenzymatic Cell Harvesting. ACS APPLIED BIO MATERIALS 2020; 3:5428-5437. [PMID: 35021716 DOI: 10.1021/acsabm.0c00650] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
As one of the nonenzymatic cell-harvesting technologies, a thermal-responsive surface based on poly(2-oxazoline)s has achieved initial success in supporting the adhesion and thermal-induced detachment of animal cells. However, because of the laborious preparation procedure, this technique was only limited to research purposes. In this work, through using poly(glycidyl methacrylate) (PGMA) as the anchor layer, poly(2-propyl-2-oxazoline)s (PPOx) were grafted onto glass wafers through a facile two-step coating and annealing procedure for nonenzymatic cell harvesting. In the first step, the piranha solution-activated glass wafers were immersed into the chloroform solution of PGMA and then annealed for a given period of time to immobilize PGMA onto the glass wafers through the bonding between epoxy groups and hydroxyl groups. In the second step, the PGMA-coated glass wafers were further immersed into the chloroform solution of carboxyl-functionalized PPOx. After annealing, PPOx were immobilized onto the PGMA layer through the bonding between carboxyl groups and the residual epoxy groups. Atomic force microscopy, X-ray photoelectron spectroscopy, and ellipsometry were used to characterize the modified glass wafers. The results of cytocompatibility evaluation showed that the PPOx-coated glass wafers were almost nontoxic and were able to support the adhesion and proliferation of L929 cells well. By lowering the temperature to 8 °C, L929 and Vero cells were successfully detached from the PPOx-coated glass wafers without any enzymatic treatment. Further cultivation has demonstrated that the cooling procedure had little effect on cell viability, and the cells still retained good viability after harvesting.
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Affiliation(s)
- Faming Wang
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, 210096 Jiangsu, PR China
| | - Pengfei Ren
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, 210096 Jiangsu, PR China
| | - Katrien V Bernaerts
- Aachen-Maastricht Institute for Biobased Materials (AMIBM), Faculty of Science and Engineering, Maastricht University, Geleen 6167 RD, The Netherlands
| | - Yifu Fu
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, 210096 Jiangsu, PR China
| | - Wanjun Hu
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, 210096 Jiangsu, PR China
| | - Naizhen Zhou
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, 210096 Jiangsu, PR China
| | - Tianzhu Zhang
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, School of Biological Sciences and Medical Engineering, Southeast University, Nanjing, 210096 Jiangsu, PR China
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11
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Zhang S, Liu W, Wu Z, Chen H. Tri-functional platform for the facile construction of dual-functional surfaces via a one-pot strategy. J Mater Chem B 2020; 8:5602-5605. [PMID: 32525197 DOI: 10.1039/d0tb01222j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The scope of simultaneously introducing two new functionalities into the same polymeric substrate is largely limited to facile grafting approaches. Here, we designed a novel tri-functional platform and facilely constructed dual-functional surfaces in one pot by combining the "sulfur(vi)-fluoride exchange" (SuFEx) click reaction, photoinitiated polymerization and benzophenone photochemistry.
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Affiliation(s)
- Shuxiang Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu Province, Soochow University, Suzhou 215123, P. R. China.
| | - Wenying Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu Province, Soochow University, Suzhou 215123, P. R. China.
| | - Zhaoqiang Wu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu Province, Soochow University, Suzhou 215123, P. R. China.
| | - Hong Chen
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center for New Type Urbanization and Social Governance of Jiangsu Province, Soochow University, Suzhou 215123, P. R. China.
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12
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Cegłowski M, Jerca VV, Jerca FA, Hoogenboom R. Reduction-Responsive Molecularly Imprinted Poly(2-isopropenyl-2-oxazoline) for Controlled Release of Anticancer Agents. Pharmaceutics 2020; 12:E506. [PMID: 32498326 PMCID: PMC7356239 DOI: 10.3390/pharmaceutics12060506] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/29/2020] [Accepted: 05/31/2020] [Indexed: 01/09/2023] Open
Abstract
Trigger-responsive materials are capable of controlled drug release in the presence of a specific trigger. Reduction induced drug release is especially interesting as the reductive stress is higher inside cells than in the bloodstream, providing a conceptual controlled release mechanism after cellular uptake. In this work, we report the synthesis of 5-fluorouracil (5-FU) molecularly imprinted polymers (MIPs) based on poly(2-isopropenyl-2-oxazoline) (PiPOx) using 3,3'-dithiodipropionic acid (DTDPA) as a reduction-responsive functional cross-linker. The disulfide bond of DTDPA can be cleaved by the addition of tris(2-carboxyethyl)phosphine (TCEP), leading to a reduction-induced 5-FU release. Adsorption isotherms and kinetics for 5-FU indicate that the adsorption kinetics process for imprinted and non-imprinted adsorbents follows two different kinetic models, thus suggesting that different mechanisms are responsible for adsorption. The release kinetics revealed that the addition of TCEP significantly influenced the release of 5-FU from PiPOx-MIP, whereas for non-imprinted PiPOx, no statistically relevant differences were observed. This work provides a conceptual basis for reduction-induced 5-FU release from molecularly imprinted PiPOx, which in future work may be further developed into MIP nanoparticles for the controlled release of therapeutic agents.
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Affiliation(s)
- Michał Cegłowski
- Supramolecular Chemistry Group, Center of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium; (V.V.J.); (F.A.J.)
- Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Valentin Victor Jerca
- Supramolecular Chemistry Group, Center of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium; (V.V.J.); (F.A.J.)
- Centre of Organic Chemistry “Costin D. Nenitzescu”, Romanian Academy, Spl. Independentei 202B, 060023 Bucharest, Romania
| | - Florica Adriana Jerca
- Supramolecular Chemistry Group, Center of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium; (V.V.J.); (F.A.J.)
- Centre of Organic Chemistry “Costin D. Nenitzescu”, Romanian Academy, Spl. Independentei 202B, 060023 Bucharest, Romania
| | - Richard Hoogenboom
- Supramolecular Chemistry Group, Center of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, B-9000 Ghent, Belgium; (V.V.J.); (F.A.J.)
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13
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Du Y, Zhang T, Gieseler D, Schneider M, Hafner D, Sheng W, Li W, Lange F, Wegener E, Amin I, Jordan R. Facile Fabrication of Bio- and Dual-Functional Poly(2-oxazoline) Bottle-Brush Brush Surfaces. Chemistry 2020; 26:2749-2753. [PMID: 31826315 PMCID: PMC7064997 DOI: 10.1002/chem.201905326] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Indexed: 11/10/2022]
Abstract
Poly(2-oxazoline)s (POx) bottle-brush brushes have excellent biocompatible and lubricious properties, which are promising for the functionalization of surfaces for biomedical devices. Herein, a facile synthesis of POx is reported which is based bottle-brush brushes (BBBs) on solid substrates. Initially, backbone brushes of poly(2-isopropenyl-2-oxazoline) (PIPOx) were fabricated via surface initiated Cu0 plate-mediated controlled radical polymerization (SI-Cu0 CRP). Poly(2-methyl-2-oxazoline) (PMeOx) side chains were subsequently grafted from the PIPOx backbone via living cationic ring opening polymerization (LCROP), which result in ≈100 % increase in brush thickness (from 58 to 110 nm). The resultant BBBs shows tunable thickness up to 300 nm and high grafting density (σ) with 0.42 chains nm-2 . The synthetic procedure of POx BBBs can be further simplified by using SI-Cu0 CRP with POx molecular brush as macromonomer (Mn =536 g mol-1 , PDI=1.10), which results in BBBs surface up to 60 nm with well-defined molecular structure. Both procedures are significantly superior to the state-of-art approaches for the synthesis of POx BBBs, which are promising to design bio-functional surfaces.
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Affiliation(s)
- Yunhao Du
- Chair of Macromolecular ChemistryFaculty of Chemistry and Food ChemistryTechnische Universität DresdenMommsenstr. 401069DresdenGermany
| | - Tao Zhang
- Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang ProvinceNingbo Institute of Material Technology and Engineering, Chinese Academy of SciencesZhongguan West Road, 1219315201NingboChina
| | - Dan Gieseler
- Chair of Macromolecular ChemistryFaculty of Chemistry and Food ChemistryTechnische Universität DresdenMommsenstr. 401069DresdenGermany
| | - Maximilian Schneider
- Chair of Macromolecular ChemistryFaculty of Chemistry and Food ChemistryTechnische Universität DresdenMommsenstr. 401069DresdenGermany
| | - Daniel Hafner
- Chair of Macromolecular ChemistryFaculty of Chemistry and Food ChemistryTechnische Universität DresdenMommsenstr. 401069DresdenGermany
| | - Wenbo Sheng
- Chair of Macromolecular ChemistryFaculty of Chemistry and Food ChemistryTechnische Universität DresdenMommsenstr. 401069DresdenGermany
| | - Wei Li
- Chair of Macromolecular ChemistryFaculty of Chemistry and Food ChemistryTechnische Universität DresdenMommsenstr. 401069DresdenGermany
| | - Fred Lange
- Chair of Macromolecular ChemistryFaculty of Chemistry and Food ChemistryTechnische Universität DresdenMommsenstr. 401069DresdenGermany
| | - Erik Wegener
- Chair of Macromolecular ChemistryFaculty of Chemistry and Food ChemistryTechnische Universität DresdenMommsenstr. 401069DresdenGermany
| | - Ihsan Amin
- Van't Hoff Institute of Molecular Science, University of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Rainer Jordan
- Chair of Macromolecular ChemistryFaculty of Chemistry and Food ChemistryTechnische Universität DresdenMommsenstr. 401069DresdenGermany
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14
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Li W, Sheng W, Jordan R, Zhang T. Boosting or moderating surface-initiated Cu(0)-mediated controlled radical polymerization with external additives. Polym Chem 2020. [DOI: 10.1039/d0py01061h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
External additives regulate the copper disproportionation/comproportionation equilibrium to control polymer brush growth in surface-initiated Cu(0)-mediated controlled radical polymerization.
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Affiliation(s)
- Wei Li
- Chair of Macromolecular Chemistry
- Faculty of Chemistry and Food Chemistry
- School of Science
- Technische Universität Dresden
- 01069 Dresden
| | - Wenbo Sheng
- Chair of Macromolecular Chemistry
- Faculty of Chemistry and Food Chemistry
- School of Science
- Technische Universität Dresden
- 01069 Dresden
| | - Rainer Jordan
- Chair of Macromolecular Chemistry
- Faculty of Chemistry and Food Chemistry
- School of Science
- Technische Universität Dresden
- 01069 Dresden
| | - Tao Zhang
- Key Laboratory of Marine Materials and Related Technologies
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo 315201
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