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Jurku̅nas M, Talaikis M, Klimkevičius V, Pudžaitis V, Niaura G, Makuška R. Diblock Copolymers of Methacryloyloxyethyl Phosphorylcholine and Dopamine Methacrylamide: Synthesis and Real-Time Adsorption Dynamics by SEIRAS and RAIRS. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5945-5958. [PMID: 38456424 PMCID: PMC10956495 DOI: 10.1021/acs.langmuir.3c03925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/18/2024] [Accepted: 02/23/2024] [Indexed: 03/09/2024]
Abstract
Amphiphilic diblock copolymers containing a block of 2-methacryloyloxyethyl phosphorylcholine (MPC) with unique properties to prevent nonspecific protein adsorption and enhance lubrication in aqueous media and a block of dopamine methacrylamide (DOPMA) distinguished by excellent adhesion performance were synthesized by reversible addition fragmentation chain transfer (RAFT) polymerization for the first time. The DOPMA monomer with an acetonide-protected catechol group (acetonide-protected dopamine methacrylamide (ADOPMA)) was used, allowing the prevention of undesirable side reactions during polymerization and oxidation during storage. The adsorption behavior of the diblock copolymers with protected and unprotected catechol groups on gold surfaces was probed using attenuated total reflection (ATR)-Fourier transform infrared (FTIR) spectroscopy, surface-enhanced infrared absorption spectroscopy (SEIRAS), and reflection-absorption infrared spectroscopy (RAIRS). The copolymers pMPC-b-pADOPMA demonstrated physisorption with rapid adsorption and ultrasound-assisted desorption, while the copolymers pMPC-b-DOPMA exhibited chemical adsorption with slower dynamics but a stronger interaction with the gold surface. SEIRAS and RAIRS allowed proving the reorientation of the diblock copolymers during adsorption, demonstrating the exposure of the pMPC block toward the aqueous phase.
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Affiliation(s)
- Marijus Jurku̅nas
- Institute
of Chemistry, Vilnius University, Naugarduko Str. 24, 03225 Vilnius, Lithuania
| | - Martynas Talaikis
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Sauletekio Ave. 3, 10257 Vilnius, Lithuania
| | - Vaidas Klimkevičius
- Institute
of Chemistry, Vilnius University, Naugarduko Str. 24, 03225 Vilnius, Lithuania
| | - Vaidas Pudžaitis
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Sauletekio Ave. 3, 10257 Vilnius, Lithuania
| | - Gediminas Niaura
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Sauletekio Ave. 3, 10257 Vilnius, Lithuania
| | - Ričardas Makuška
- Institute
of Chemistry, Vilnius University, Naugarduko Str. 24, 03225 Vilnius, Lithuania
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2
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Iwasaki Y. Photoassisted Surface Modification with Zwitterionic Phosphorylcholine Polymers for the Fabrication of Ideal Biointerfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:15417-15430. [PMID: 37899752 DOI: 10.1021/acs.langmuir.3c02696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Surface modification using zwitterionic 2-methacryloyloxyethyl phosphorylcholine (MPC) polymers is commonly performed to fabricate interfaces that reduce nonspecific fouling by biomolecules and cells. Accordingly, several clinically used devices, such as guide wires, stents, oxygenators, left ventricular assist devices, and microcatheters have been modified using MPC polymers. The specific types of surface modifications vary across substrates and applications. Recently, photoreactions have garnered attention for surface modification due to their stability and tunability. This review highlights various studies that employed photoreactions to modify surfaces using MPC polymers, especially photoinduced graft polymerization of MPC. In addition to antifouling materials, several micromanipulated, long-lasting hydrophilic, and super antiwear surfaces are summarized. Furthermore, several photoreactive MPC polymers that can be used to control interactions between biomolecules and materials are presented along with their potential to form selective recognition surfaces that target biomolecules for biosensors and diagnostic devices.
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Affiliation(s)
- Yasuhiko Iwasaki
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan
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3
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Rapid RAFT Polymerization of Acrylamide with High Conversion. Molecules 2023; 28:molecules28062588. [PMID: 36985559 PMCID: PMC10057598 DOI: 10.3390/molecules28062588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/09/2023] [Accepted: 03/10/2023] [Indexed: 03/18/2023] Open
Abstract
Rapid RAFT polymerization can significantly improve production efficiency of PAM with designed molecular structure. This study shows that ideal Reversible Addition–Fragmentation Chain Transfer (RAFT) polymerization of acrylamide is achieved in dimethyl sulfoxide (DMSO) solution at 70 °C. The key to success is the appropriate choice of both a suitable RAFT chain transfer agent (CTA) and initiating species. It is illustrated that dodecyl trithiodimethyl propionic acid (DMPA) is a suitable trithiocarbonate RAFT CTA and is synthesized more easily than other CTAs. Compared to other RAFT processes of polymers, the reaction system shortens reaction time, enhances conversion, and bears all the characteristics of a controlled radical polymerization. The calculation result shows that high concentrations can reduce high conversions, accelerate the reaction rate, and widen molecular weight distributions slightly. This work proposes an excellent approach for rapid synthesis of PAMs with a restricted molecular weight distribution.
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4
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Agyekum GA, Zhang M, Li F, Sun M, Zhang F, Yang Y, Lu Y, Chen M, Zhang Z. The complexing of cationic copolymer MPC 30-DEA 70 with TGF-β1 antisense oligodeoxynucleotide and transfection into cardiomyocytes in vitro. J Biomater Appl 2023; 37:1315-1324. [PMID: 36373781 DOI: 10.1177/08853282221138922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Although gene therapy is an attractive option for the treatment of cardiovascular diseases, the ideal gene delivery systems are still under investigation and must meet the following criteria: safety, adequate gene transfer efficiency, and stable expression of the transgene for a duration appropriate for treating the disease. In this study, we developed a cationic phosphorylcholine-containing diblock copolymer, namely MPC30-DEA70, as carrier systems to deliver a chemically synthesized transforming growth factor-beta 1(TGF-β1) antisense oligonucleotide (AS-ODN) into cardiomyocytes (CMs) to observe the cell transfection efficiency of MPC30-DEA70 and the inhibition effect on the expression of TGF-β1. MPC30-DEA70/TGF-β1 AS-ODN complexes were formed through complexation between copolymer MPC30-DEA70 (N) and AS-ODN (P) at different N/P ratios and were characterized by DNA electrophoresis. Notably, the cytotoxicity and cell growth inhibition assay showed that the MPC30-DEA70 had low cytotoxicity to CMs within the effective transfection dosage range (<20 μL/mL). CLSM/TEM images displayed that most of the AS-ODN molecules engulfed by cells were located around the cell nuclei, and a few entered into the cell nuclei without harming the organelles in the cell. Transfection studies from CMs indicated a steady increase of transfection efficiency with increasing N/P ratios. The expression levels of TGF-β1 mRNA and protein in CMs were significantly inhibited at high N/P ratios. This study shows that MPC30-DEA70 can function as an effective transgenic vector into CMs and that TGF-β1 AS-ODN delivered by MPC30-DEA70 can silence the expression of the TGF-β1 gene efficiently and specifically and thereafter antagonize TGF-β1-mediated biological function in cardiomyocytes.
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Affiliation(s)
- Godfred Amfo Agyekum
- 117910Department of Cardiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.,38044School of International Education, Xuzhou Medical University, Xuzhou, China
| | - Min Zhang
- 117910Department of Cardiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Fei Li
- 117910Department of Cardiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Min Sun
- 117910Department of Cardiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Fengyun Zhang
- 117910Department of Cardiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yu Yang
- 117910Department of Cardiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yuan Lu
- 117910Department of Cardiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Minmin Chen
- 38044School of Stomatology, Xuzhou Medical University, Xuzhou, China
| | - Zhuoqi Zhang
- 117910Department of Cardiology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.,38044School of International Education, Xuzhou Medical University, Xuzhou, China
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5
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Huang J, Wang H, Huang L, Zhou Y. Phospholipid-mimicking block, graft, and block-graft copolymers for phase-transition microbubbles as ultrasound contrast agents. Front Pharmacol 2022; 13:968835. [PMCID: PMC9606805 DOI: 10.3389/fphar.2022.968835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 09/29/2022] [Indexed: 11/13/2022] Open
Abstract
Background: Lipid and polymer microbubbles (MBs) are widely used as ultrasound contrast agents in clinical diagnosis, and possess great potential in ultrasound-mediated therapy due to their drug loading function. However, overcoming the limitations of stability and echo enhancement of MBs are still a considerable challenge.Methods: A series novel block, graft and block-graft copolymers was proposed and prepared in this work, and these copolymers were used as shells to encapsulate perfluoropentane as ultrasound contrast agents. First, block, graft and block-graft copolymers with different topological structures were prepared. Then, these copolymers were prepared into block copolymer phase-transition MBs, graft copolymer phase-transition MBs, and block-graft copolymer phase-transition MBs, respectively. Finally, the dexamethasone was used for drug-loaded phase-transition microbubbles model to explore the potential of theranostic microbubbles.Results: Finally, these three resulting copolymer MBs with average size of 4–5 μm exhibited well enhancement of ultrasound imaging under the influence of different frequencies and mechanical index, and they exhibited a longer contrast-enhanced ultrasound imaging time and higher resistance to mechanical index compared with SonoVue in vitro and in vivo. In vitro drug release results also showed that these copolymer MBs could encapsulate dexamethasone drugs, and the drug release could be enhanced by ultrasonic triggering. These copolymer MBs were therapeutic MBs for targeted triggering drug release.Conclusion: Therefore, the feasibility of block, graft, and block-graft copolymers as ultrasonic contrast agents was verified, and their ultrasonic enhancement performance in vitro and in vivo was compared. The ultrasound contrast agents developed in this work have excellent development potential in comprehensive diagnosis and treatment.
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Affiliation(s)
- Jianbo Huang
- Department of Ultrasound, Laboratory of Ultrasound Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hong Wang
- Department of Ultrasound, Laboratory of Ultrasound Medicine, West China Hospital, Sichuan University, Chengdu, China
- *Correspondence: Hong Wang,
| | - Lei Huang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China
| | - Yuqing Zhou
- Department of Ultrasound, Laboratory of Ultrasound Medicine, West China Hospital, Sichuan University, Chengdu, China
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Kumar R, Santa Chalarca CF, Bockman MR, Bruggen CV, Grimme CJ, Dalal RJ, Hanson MG, Hexum JK, Reineke TM. Polymeric Delivery of Therapeutic Nucleic Acids. Chem Rev 2021; 121:11527-11652. [PMID: 33939409 DOI: 10.1021/acs.chemrev.0c00997] [Citation(s) in RCA: 128] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The advent of genome editing has transformed the therapeutic landscape for several debilitating diseases, and the clinical outlook for gene therapeutics has never been more promising. The therapeutic potential of nucleic acids has been limited by a reliance on engineered viral vectors for delivery. Chemically defined polymers can remediate technological, regulatory, and clinical challenges associated with viral modes of gene delivery. Because of their scalability, versatility, and exquisite tunability, polymers are ideal biomaterial platforms for delivering nucleic acid payloads efficiently while minimizing immune response and cellular toxicity. While polymeric gene delivery has progressed significantly in the past four decades, clinical translation of polymeric vehicles faces several formidable challenges. The aim of our Account is to illustrate diverse concepts in designing polymeric vectors towards meeting therapeutic goals of in vivo and ex vivo gene therapy. Here, we highlight several classes of polymers employed in gene delivery and summarize the recent work on understanding the contributions of chemical and architectural design parameters. We touch upon characterization methods used to visualize and understand events transpiring at the interfaces between polymer, nucleic acids, and the physiological environment. We conclude that interdisciplinary approaches and methodologies motivated by fundamental questions are key to designing high-performing polymeric vehicles for gene therapy.
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Affiliation(s)
- Ramya Kumar
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | | | - Matthew R Bockman
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Craig Van Bruggen
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Christian J Grimme
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Rishad J Dalal
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Mckenna G Hanson
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Joseph K Hexum
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Theresa M Reineke
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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7
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de Castro CE, Panico K, Stangherlin LM, Albuquerque LJC, A S Ribeiro C, da Silva MCC, Jäger E, Giacomelli FC. Evidence of protein coronas around soft nanoparticles regardless of the chemical nature of the outer surface: structural features and biological consequences. J Mater Chem B 2021; 9:2073-2083. [PMID: 33594396 DOI: 10.1039/d0tb02734k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The formation of biomolecular coronas around nanoparticles as soon as they come in contact with biological media is nowadays well accepted. The self-developed biological outer surfaces can affect the targeting capability of the colloidal carriers as well as their cytotoxicity and cellular uptake behavior. In this framework, we explored the structural features and biological consequences of protein coronas around block copolymer assemblies consisting of a common pH-responsive core made by poly[2-(diisopropylamino) ethyl methacrylate] (PDPA) and hydrophilic shells of different chemical natures: zwitterionic poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) or highly hydrophilic poly(ethylene oxide) (PEO) and poly(N-(2-hydroxypropyl)methacrylamide) (PHPMA). We demonstrated the presence of ∼50 nm protein coronas around the nanoparticles regardless of the chemical nature of the polymeric shells. The thickness is understood as the sum of the soft and hard layers and it is the actual interface seen by the cells. Although the soft corona composition is difficult to determine because the proteins are loosely bound to the outer surface of the assemblies, the tightly bound proteins (hard corona) could be identified and quantified. The compositional analysis of the hard corona demonstrated that human serum albumin (HSA), immunoglobulin G (IgG) and fibrinogen are the main components of the protein coronas, and serotransferrin is present particularly in the protein corona of the zwitterionic-stabilized assemblies. The protein coronas substantially reduce the cellular uptake of the colloidal particles due to their increased size and the presence of HSA which is known to reduce nanoparticle-cell adhesion. On the other hand, their existence also reduces the levels of cytotoxicity of the polymeric assemblies, highlighting that protein coronas should not be always understood as artifacts that need to be eliminated due to their positive outputs.
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Affiliation(s)
- Carlos E de Castro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil.
| | - Karine Panico
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil.
| | - Lucas M Stangherlin
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil.
| | | | - Caroline A S Ribeiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil.
| | - Maria C C da Silva
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil.
| | - Eliézer Jäger
- Institute of Macromolecular Chemistry, Czech Academy of Sciences, Prague, Czech Republic
| | - Fernando C Giacomelli
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André, Brazil.
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8
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Głowińska A, Trochimczuk AW. Polymer-Supported Phosphoric, Phosphonic and Phosphinic Acids-From Synthesis to Properties and Applications in Separation Processes. Molecules 2020; 25:molecules25184236. [PMID: 32942756 PMCID: PMC7571143 DOI: 10.3390/molecules25184236] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/01/2020] [Accepted: 09/01/2020] [Indexed: 11/29/2022] Open
Abstract
Efficient separation technologies are crucial to the environment and world economy. The challenge posed to scientists is how to engineer selectivity towards a targeted substrate, especially from multicomponent solutions. Polymer-supported reagents have gained a lot of attention in this context, as they eliminate a lot of inconveniences concerning widely used solvent extraction techniques. Nevertheless, the choice of an appropriate ligand for immobilization may be derived from the behavior of soluble compounds under solvent extraction conditions. Organophosphorus compounds play a significant role in separation science and technology. The features they possess, such as variable oxidation states, multivalence, asymmetry and metal-binding properties, highlight their status as a unique and versatile class of compounds, capable of selective separations proceeding through different mechanisms. This review provides a detailed survey of polymers containing phosphoric, phosphonic and phosphinic acid functionalities in the side chain and covers main advances in the preparation and application of these materials in separation science, including the most relevant synthesis routes (Arbuzov, Perkow, Mannich, Kabachnik-Fields reactions, etc.), as well as the main stages in the development of organophosphorus resins and the most important achievements in the field.
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9
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Nguyen TL, Kawata Y, Ishihara K, Yusa SI. Synthesis of Amphiphilic Statistical Copolymers Bearing Methoxyethyl and Phosphorylcholine Groups and Their Self-Association Behavior in Water. Polymers (Basel) 2020; 12:E1808. [PMID: 32806599 PMCID: PMC7464738 DOI: 10.3390/polym12081808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/07/2020] [Accepted: 08/09/2020] [Indexed: 12/19/2022] Open
Abstract
Biocompatible amphiphilic statistical copolymers P(MEA/MPCm) composed of 2-methoxyethyl acrylate (MEA) and 2-methacryloyloxyethyl phosphorylcholine (MPC) were prepared with three different mol% of the hydrophilic unit MPC (m = 6, 12 and 46 mol%). The monomer reactivity ratios of MEA (rMEA) and MPC (rMPC) were 0.53 and 2.21, respectively. The rMEA × rMPC value of 1.17 demonstrated that statistical copolymerization was successful. P(MEA/MPC12) and P(MEA/MPC46) copolymers did not undergo aggregation in water, whereas the P(MEA/MPC6) copolymer formed micelles in water with a hydrodynamic radius (Rh) of 96.9 nm and a critical aggregation concentration, which was determined using pyrene fluorescence, at 0.0082 g/L. The restricted motion of the protons in the hydrophobic MEA units in the micelles' cores provided additional evidence of self-association in P(MEA/MPC6).
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Affiliation(s)
- Thi Lien Nguyen
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan; (T.L.N.); (Y.K.)
| | - Yuuki Kawata
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan; (T.L.N.); (Y.K.)
| | - Kazuhiko Ishihara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;
| | - Shin-ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan; (T.L.N.); (Y.K.)
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10
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Selianitis D, Pispas S. PDEGMA‐b‐PDIPAEMA
copolymers via
RAFT
polymerization and their
pH
and thermoresponsive schizophrenic self‐assembly in aqueous media. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200266] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Dimitrios Selianitis
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation Athens Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute National Hellenic Research Foundation Athens Greece
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11
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Jennings J, Cornel EJ, Derry MJ, Beattie DL, Rymaruk MJ, Deane OJ, Ryan AJ, Armes SP. Synthesis of High χ-Low N Diblock Copolymers by Polymerization-Induced Self-Assembly. Angew Chem Int Ed Engl 2020; 59:10848-10853. [PMID: 32267055 PMCID: PMC7317809 DOI: 10.1002/anie.202001436] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 02/19/2020] [Indexed: 11/07/2022]
Abstract
Polymerization-induced self-assembly (PISA) enables the scalable synthesis of functional block copolymer nanoparticles with various morphologies. Herein we exploit this versatile technique to produce so-called "high χ-low N" diblock copolymers that undergo nanoscale phase separation in the solid state to produce sub-10 nm surface features. By varying the degree of polymerization of the stabilizer and core-forming blocks, PISA provides rapid access to a wide range of diblock copolymers, and enables fundamental thermodynamic parameters to be determined. In addition, the pre-organization of copolymer chains within sterically-stabilized nanoparticles that occurs during PISA leads to enhanced phase separation relative to that achieved using solution-cast molecularly-dissolved copolymer chains.
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Affiliation(s)
- James Jennings
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Erik J. Cornel
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Matthew J. Derry
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
- Present address: Aston Institute of Materials Research (AIMR)Aston UniversityBirminghamB4 7ETUK
| | - Deborah L. Beattie
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Matthew J. Rymaruk
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Oliver J. Deane
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Anthony J. Ryan
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
| | - Steven P. Armes
- Dainton BuildingDepartment of ChemistryThe University of SheffieldSheffieldS3 7HFUK
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12
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Jennings J, Cornel EJ, Derry MJ, Beattie DL, Rymaruk MJ, Deane OJ, Ryan AJ, Armes SP. Synthesis of High
χ
–Low
N
Diblock Copolymers by Polymerization‐Induced Self‐Assembly. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001436] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- James Jennings
- Dainton BuildingDepartment of ChemistryThe University of Sheffield Sheffield S3 7HF UK
| | - Erik J. Cornel
- Dainton BuildingDepartment of ChemistryThe University of Sheffield Sheffield S3 7HF UK
| | - Matthew J. Derry
- Dainton BuildingDepartment of ChemistryThe University of Sheffield Sheffield S3 7HF UK
- Present address: Aston Institute of Materials Research (AIMR)Aston University Birmingham B4 7ET UK
| | - Deborah L. Beattie
- Dainton BuildingDepartment of ChemistryThe University of Sheffield Sheffield S3 7HF UK
| | - Matthew J. Rymaruk
- Dainton BuildingDepartment of ChemistryThe University of Sheffield Sheffield S3 7HF UK
| | - Oliver J. Deane
- Dainton BuildingDepartment of ChemistryThe University of Sheffield Sheffield S3 7HF UK
| | - Anthony J. Ryan
- Dainton BuildingDepartment of ChemistryThe University of Sheffield Sheffield S3 7HF UK
| | - Steven P. Armes
- Dainton BuildingDepartment of ChemistryThe University of Sheffield Sheffield S3 7HF UK
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Poly[oligo(ethylene glycol) methacrylate]- b-poly[(vinyl benzyl trimethylammonium chloride)] Based Multifunctional Hybrid Nanostructures Encapsulating Magnetic Nanoparticles and DNA. Polymers (Basel) 2020; 12:polym12061283. [PMID: 32503350 PMCID: PMC7362237 DOI: 10.3390/polym12061283] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 05/30/2020] [Accepted: 06/01/2020] [Indexed: 02/05/2023] Open
Abstract
We report on the preparation of novel and multifunctional hybrid spherical-shaped nanostructures involving a double-hydrophilic block copolymer, namely the neutral cationic poly[oligo(ethylene glycol) methacrylate]-b-poly[(vinyl benzyl trimethylammonium chloride)] (POEGMA-b-PVBTMAC) diblock copolymer, initially complexed with hydrophilic anionic magnetic nanoparticles (MNPs), and subsequently, with short deoxyribonucleic acid (113 bases DNA). The POEGMA-b-PVBTMAC copolymer, the copolymer/MNPs and the copolymer/MNPs/DNA tricomponent hybrid electrostatic complexes were studied by dynamic/electrophoretic light scattering (DLS/ELS) and cryogenic transmission electron microscopy (cryo-TEM) techniques for the determination of their structure and solution properties. The MNPs were complexed efficiently with the oppositely charged diblock chains, leading to well-defined hybrid organic–inorganic spherical-shaped nanostructures. A significant aggregation tendency of the MNPs is noticed in cryo-TEM measurements after the electrostatic complexation of DNA, implying an accumulation of the DNA macromolecules on the surface of the hybrid tricomponent complexes. Magnetophoretic experiments verified that the MNPs maintain their magnetic properties after the complexation initially with the copolymer, and subsequently, within the block polyelectrolyte/MNPs/DNA nanostructures.
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15
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Ishihara K. Revolutionary advances in 2‐methacryloyloxyethyl phosphorylcholine polymers as biomaterials. J Biomed Mater Res A 2019; 107:933-943. [DOI: 10.1002/jbm.a.36635] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 01/24/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Kazuhiko Ishihara
- Department of Materials Engineering The University of Tokyo 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 113‐8656 Japan
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16
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Ohshio M, Ishihara K, Yusa SI. Self-Association Behavior of Cell Membrane-Inspired Amphiphilic Random Copolymers in Water. Polymers (Basel) 2019; 11:polym11020327. [PMID: 30960312 PMCID: PMC6419178 DOI: 10.3390/polym11020327] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 02/11/2019] [Accepted: 02/11/2019] [Indexed: 12/28/2022] Open
Abstract
Water-soluble and amphiphilic random copolymers (P(MPC/DMAx)) composed of hydrophilic 2-methacryloyloxyethyl phosphorylcholine (MPC) and hydrophobic n-dodecyl methacrylate (DMA) were prepared via reversible addition-fragmentation chain transfer (RAFT) controlled radical polymerization. The compositions of DMA unit (x) in the copolymer were in the range of 0 to 38 unit mol %. The degree of polymerization of P(MPC/DMAx) was adjusted to about 200. Since the monomer reactivity ratios of MPC and DMA are 1.01 and 1.00, respectively, ideal free radical copolymerization occurred. In aqueous solutions, interpolymer aggregation occurred due to the hydrophobic pendant n-dodecyl groups. The aggregation number (Nagg) increased with an increasing x. The mobilities of the DMA and MPC pendant groups in aqueous solutions were restricted, as confirmed by 1H NMR relaxation time measurements, because a part of the MPC units were trapped in the hydrophobic microdomain formed from the pendant n-dodecyl groups. The polarity of the hydrophobic microdomain formed from P(MPC/DMA38) in water was similar to that of ethyl acetate according to fluorescence probe experiments. No specific interactions were found in water between P(MPC/DMAx) and bovine serum albumin because the surface of the interpolymer aggregates contained only hydrophilic MPC units.
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Affiliation(s)
- Maho Ohshio
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan.
| | - Kazuhiko Ishihara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656, Japan.
| | - Shin-Ichi Yusa
- Department of Applied Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan.
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17
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Mai BT, Barthel M, Marotta R, Pellegrino T. Crosslinked pH-responsive polymersome via Diels-Alder click chemistry: A reversible pH-dependent vesicular nanosystem. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.01.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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18
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Du J, Choi B, Liu Y, Feng A, Thang SH. Degradable pH and redox dual responsive nanoparticles for efficient covalent drug delivery. Polym Chem 2019. [DOI: 10.1039/c8py01583j] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hydrophobic drug paclitaxel was modified into a polymerizable monomer and subsequently copolymerized with pH-sensitive monomers and redox-sensitive disulfide-based cyclic monomers.
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Affiliation(s)
- Jinhong Du
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Bonnie Choi
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yuxuan Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Anchao Feng
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - San H. Thang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- College of Materials Science and Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
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19
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Rodríguez-Arco L, Poma A, Ruiz-Pérez L, Scarpa E, Ngamkham K, Battaglia G. Molecular bionics - engineering biomaterials at the molecular level using biological principles. Biomaterials 2018; 192:26-50. [PMID: 30419394 DOI: 10.1016/j.biomaterials.2018.10.044] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 10/06/2018] [Accepted: 10/28/2018] [Indexed: 12/18/2022]
Abstract
Life and biological units are the result of the supramolecular arrangement of many different types of molecules, all of them combined with exquisite precision to achieve specific functions. Taking inspiration from the design principles of nature allows engineering more efficient and compatible biomaterials. Indeed, bionic (from bion-, unit of life and -ic, like) materials have gained increasing attention in the last decades due to their ability to mimic some of the characteristics of nature systems, such as dynamism, selectivity, or signalling. However, there are still many challenges when it comes to their interaction with the human body, which hinder their further clinical development. Here we review some of the recent progress in the field of molecular bionics with the final aim of providing with design rules to ensure their stability in biological media as well as to engineer novel functionalities which enable navigating the human body.
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Affiliation(s)
- Laura Rodríguez-Arco
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK.
| | - Alessandro Poma
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK
| | - Lorena Ruiz-Pérez
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK; The EPRSC/Jeol Centre of Liquid Electron Microscopy, University College London, London, WC1H 0AJ, UK
| | - Edoardo Scarpa
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK
| | - Kamolchanok Ngamkham
- Faculty of Engineering, King Mongkut's University of Technology Thonbury, 126 Pracha Uthit Rd., Bang Mod, Thung Khru, Bangkok, 10140, Thailand
| | - Giuseppe Battaglia
- Department of Chemistry, University College London (UCL) 20 Gordon St, Kings Cross, London, WC1H 0AJ, UK; Institute for Physics of Living Systems, University College London, London, UK; The EPRSC/Jeol Centre of Liquid Electron Microscopy, University College London, London, WC1H 0AJ, UK.
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20
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Hossain T, Alam MA, Rahman MA, Sharafat MK, Minami H, Gafur MA, Hoque SM, Ahmad H. Zwitterionic poly(2-(methacryloyloxy) ethyl phosphorylcholine) coated mesoporous silica particles and doping with magnetic nanoparticles. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.06.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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21
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Kupfervermittelte radikalische Polymerisation mit reversibler Deaktivierung in wässrigen Medien. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802091] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Jones GR, Anastasaki A, Whitfield R, Engelis N, Liarou E, Haddleton DM. Copper‐Mediated Reversible Deactivation Radical Polymerization in Aqueous Media. Angew Chem Int Ed Engl 2018; 57:10468-10482. [DOI: 10.1002/anie.201802091] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Glen R. Jones
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
| | - Athina Anastasaki
- Materials Research LaboratoryUniversity of California Santa Barbara California 93106 USA
| | - Richard Whitfield
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
| | - Nikolaos Engelis
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
| | - Evelina Liarou
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
| | - David M. Haddleton
- University of WarwickDepartment of Chemistry Library Road Coventry CV4 7AL UK
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23
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Skinner M, Johnston BM, Liu Y, Hammer B, Selhorst R, Xenidou I, Perry SL, Emrick T. Synthesis of Zwitterionic Pluronic Analogs. Biomacromolecules 2018; 19:3377-3389. [PMID: 30024744 DOI: 10.1021/acs.biomac.8b00676] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Novel polymer amphiphiles with chemical structures designed as zwitterionic analogs of Pluronic block copolymers were prepared by controlled free radical polymerization of phosphorylcholine (PC) or choline phosphate (CP) methacrylate monomers from a difunctional poly(propylene oxide) (PPO) macroinitiator. Well-defined, water-dispersible zwitterionic triblock copolymers, or "zwitteronics", were prepared with PC content ranging from 5 to 47 mol percent and composition-independent surfactant characteristics in water, which deviate from the properties of conventional Pluronic amphiphiles. These PC-zwitteronics assembled into nanoparticles in water, with tunable sizes and critical aggregation concentrations (CACs) based on their hydrophilic-lipophilic balance (HLB). Owing to the lower critical solution temperature (LCST) miscibility of the hydrophobic PPO block in water, PC-zwitteronics exhibited thermoreversible aqueous solubility tuned by block copolymer composition. The chemical versatility of this approach was demonstrated by embedding functionality, in the form of alkyne groups, directly into the zwitterion moieties. These alkynes proved ideal for cross-linking the zwitteronic nanoparticles and for generating nanoparticle-cross-linked hydrogels using UV-initiated thiol-yne "click" chemistry.
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24
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Pan S, Chen M, Wu L. Synthesis of raspberry-like polymer/SiO 2 hybrid colloidal spheres grafted by block-copolymer poly(MPC- b -MPS) for underwater superoleophobic anti-biofouling coatings. J Colloid Interface Sci 2018; 522:20-28. [DOI: 10.1016/j.jcis.2018.03.054] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/15/2018] [Accepted: 03/15/2018] [Indexed: 11/30/2022]
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25
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Góis JR, Reis F, Almeida AM, Pereira P, Sousa F, Serra AC, Coelho JFJ. Preparation of well-defined brush-like block copolymers for gene delivery applications under biorelevant reaction conditions. Colloids Surf B Biointerfaces 2018; 169:107-117. [PMID: 29753951 DOI: 10.1016/j.colsurfb.2018.05.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 04/10/2018] [Accepted: 05/01/2018] [Indexed: 01/05/2023]
Abstract
Well-defined oligo(ethylene glycol) methyl ether methacrylate (OEOMA) based block copolymers with cationic segments composed by N,N-(dimethylamino) ethyl methacrylate (DMAEMA) and/or 2-(diisopropylamino) ethyl methacrylate (DPA) were developed under biorelevant reaction conditions. These brush-type copolymers were synthesized through supplemental activator and reducing agent (SARA) atom transfer radical polymerization (ATRP) using sodium dithionite as SARA agent. The synthesis was carried out using an eco-friendly solvent mixture, very low copper catalyst concentration, and mild reaction conditions. The structure of the block copolymers was characterized by size exclusion chromatography (SEC) analysis and 1H nuclear magnetic resonance (NMR) spectroscopy. The pH-dependent protonation of these copolymers enables the efficient complexation with plasmid DNA (pDNA), yielding polyplexes with sizes ranging from 200 up to 700 nm, depending on the molecular weight of the copolymers, composition and concentration used. Agarose gel electrophoresis confirmed the successful pDNA encapsulation. No cytotoxicity effect was observed, even for N/P ratios higher than 50, for human fibroblasts and cervical cancer cell lines cells. The in vitro cellular uptake experiments demonstrated that the pDNA-loaded block copolymers were efficiently delivered into nucleus of cervical cancer cells. The polymerization approach, the unique structure of the block copolymers and the efficient DNA encapsulation presented can open new avenues for development of efficient tailor made gene delivery systems under biorelevant conditions.
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Affiliation(s)
- Joana R Góis
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790, Coimbra, Portugal
| | - Fábio Reis
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790, Coimbra, Portugal
| | - Ana M Almeida
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Avenida Infante D. Henrique, 6200-506, Covilhã, Portugal
| | - Patrícia Pereira
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Avenida Infante D. Henrique, 6200-506, Covilhã, Portugal
| | - Fani Sousa
- CICS-UBI, Health Sciences Research Centre, University of Beira Interior, Avenida Infante D. Henrique, 6200-506, Covilhã, Portugal
| | - Arménio C Serra
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790, Coimbra, Portugal
| | - Jorge F J Coelho
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Polo II, Rua Sílvio Lima, 3030-790, Coimbra, Portugal.
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26
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de Castro CE, Ribeiro CAS, Alavarse AC, Albuquerque LJC, da Silva MCC, Jäger E, Surman F, Schmidt V, Giacomelli C, Giacomelli FC. Nanoparticle-Cell Interactions: Surface Chemistry Effects on the Cellular Uptake of Biocompatible Block Copolymer Assemblies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2180-2188. [PMID: 29338258 DOI: 10.1021/acs.langmuir.7b04040] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The development of nanovehicles for intracellular drug delivery is strongly bound to the understating and control of nanoparticles cellular uptake process, which in turn is governed by surface chemistry. In this study, we explored the synthesis, characterization, and cellular uptake of block copolymer assemblies consisting of a pH-responsive poly[2-(diisopropylamino)ethyl methacrylate] (PDPA) core stabilized by three different biocompatible hydrophilic shells (a zwitterionic type poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) layer, a highly hydrated poly(ethylene oxide) (PEO) layer with stealth effect, and an also proven nontoxic and nonimmunogenic poly(N-(2-hydroxypropyl)methacrylamide) (PHPMA) layer). All particles had a spherical core-shell structure. The largest particles with the thickest hydrophilic stabilizing shell obtained from PMPC40-b-PDPA70 were internalized to a higher level than those smaller in size and stabilized by PEO or PHPMA and produced from PEO122-b-PDPA43 or PHPMA64-b-PDPA72, respectively. Such a behavior was confirmed among different cell lines, with assemblies being internalized to a higher degree in cancer (HeLa) as compared to healthy (Telo-RF) cells. This fact was mainly attributed to the stronger binding of PMPC to cell membranes. Therefore, cellular uptake of nanoparticles at the sub-100 nm size range may be chiefly governed by the chemical nature of the stabilizing layer rather than particles size and/or shell thickness.
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Affiliation(s)
- Carlos E de Castro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
| | - Caroline A S Ribeiro
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
| | - Alex C Alavarse
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
| | | | - Maria C C da Silva
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, 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
| | - František Surman
- Institute of Macromolecular Chemistry v.v.i., Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Vanessa Schmidt
- Departamento de Química, Universidade Federal de Santa Maria , 97105-900 Santa Maria, RS, Brazil
| | - Cristiano Giacomelli
- Departamento de Química, Universidade Federal de Santa Maria , 97105-900 Santa Maria, RS, Brazil
| | - Fernando C Giacomelli
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC , Santo André, Brazil
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27
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Kalasin S, Letteri RA, Emrick T, Santore MM. Adsorbed Polyzwitterion Copolymer Layers Designed for Protein Repellency and Interfacial Retention. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:13708-13717. [PMID: 29134801 DOI: 10.1021/acs.langmuir.7b03391] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Poly(2-methacryloyloxyethyl phosphorylcholine) (pMPC), when end-tethered to surfaces by the adsorption of copolymeric cationic segments, forms adsorbed layers that substantially reduce protein adsorption. This study examined variations in the molecular architecture of copolymers containing cationic poly(trimethylammonium ethyl methacrylate (pTMAEMA) anchor blocks that adsorbed strongly to negative surfaces. With appropriate copolymer design, the pTMAEMA blocks were shielded, by pMPC tethers, from solution-phase proteins. The most protein-resistant copolymer layers, eliminating fibrinogen and lysozyme adsorption within detectible limits of 0.01 mg/m2, had metrics (the amount of pMPC at the surface and the reduced tether footprint) consistent with the formation of an interfacial polymer brush. The p(TMAEMA-b-MPC) copolymer layers substantially outperformed the protein resistance of surface-polymerized pMPC layers when compared on a per-polyzwitterion-mass basis or on the basis of the scaled tether area. Additionally, p(TMAEMA-b-MPC) copolymer layers offered advantages over the much-studied cationically anchored poly(ethylene glycol) (PEG) graft copolymer system, which forms PEG brushes by the adsorption of a poly l-lysine (PLL) backbone. Although the optimized p(TMAEMA-b-MPC) and PLL-PEG copolymers were similarly fibrinogen-resistant, the cationic protein lysozyme was repelled by pMPC but adhered to the PEG brush via PEG-lysozyme attractions. Additionally, the adsorbed p(TMAEMA-b-MPC) copolymers were not displaced by poly l-lysine homopolymers, which completely displaced the PLL-PEG copolymer to expose a protein-adhesive surface. Thus, the p(TMAEMA-b-MPC) copolymer system comprises a scalable means to produce protein-repellent surfaces, free of the complexities of surface-initiated polymerization and with the advantages of polyzwitterions.
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Affiliation(s)
- S Kalasin
- Department of Polymer Science and Engineering, University of Massachusetts , 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - R A Letteri
- Department of Polymer Science and Engineering, University of Massachusetts , 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - T Emrick
- Department of Polymer Science and Engineering, University of Massachusetts , 120 Governors Drive, Amherst, Massachusetts 01003, United States
| | - M M Santore
- Department of Polymer Science and Engineering, University of Massachusetts , 120 Governors Drive, Amherst, Massachusetts 01003, United States
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28
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Zwitterionic–polyurethane coatings for non-specific marine bacterial inhibition: A nontoxic approach for marine application. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.09.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Kwolek U, Nakai K, Pluta A, Zatorska M, Wnuk D, Lasota S, Bednar J, Michalik M, Yusa SI, Kepczynski M. Polyion complex vesicles (PICsomes) from strong copolyelectrolytes. Stability and in vitro studies. Colloids Surf B Biointerfaces 2017; 158:658-666. [DOI: 10.1016/j.colsurfb.2017.07.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/12/2017] [Accepted: 07/16/2017] [Indexed: 01/09/2023]
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30
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Solubilization of poorly water-soluble compounds using amphiphilic phospholipid polymers with different molecular architectures. Colloids Surf B Biointerfaces 2017; 158:249-256. [DOI: 10.1016/j.colsurfb.2017.06.040] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 06/12/2017] [Accepted: 06/23/2017] [Indexed: 01/14/2023]
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31
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Elzhry Elyafi AK, Standen G, Meikle ST, Lewis AL, Salvage JP. Development of MPC-DPA polymeric nanoparticle systems for inhalation drug delivery applications. Eur J Pharm Sci 2017. [DOI: 10.1016/j.ejps.2017.06.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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32
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Ishihara K, Mu M, Konno T, Inoue Y, Fukazawa K. The unique hydration state of poly(2-methacryloyloxyethyl phosphorylcholine). JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:884-899. [DOI: 10.1080/09205063.2017.1298278] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kazuhiko Ishihara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Mingwei Mu
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Tomohiro Konno
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Yuuki Inoue
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Kyoko Fukazawa
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
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33
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Abstract
This review summarizes pH-responsive monomers, polymers and their derivative nano- and micro-structures including micelles, cross-linked micelles, microgels and hydrogels.
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Affiliation(s)
- G. Kocak
- Department of Chemistry
- Faculty of Arts and Science
- Eskisehir Osmangazi University
- Eskisehir
- Turkey
| | - C. Tuncer
- Department of Chemistry
- Faculty of Arts and Science
- Eskisehir Osmangazi University
- Eskisehir
- Turkey
| | - V. Bütün
- Department of Chemistry
- Faculty of Arts and Science
- Eskisehir Osmangazi University
- Eskisehir
- Turkey
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34
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Harvey AC, Madsen J, Douglas CWI, MacNeil S, Armes SP. Antimicrobial Graft Copolymer Gels. Biomacromolecules 2016; 17:2710-8. [DOI: 10.1021/acs.biomac.6b00760] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Amanda C. Harvey
- Department
of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
- Unit
of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield,
South Yorkshire, S10 2TA, United Kingdom
- The
Kroto Research Institute, Department of Engineering Materials, University of Sheffield, Broad Lane, Sheffield, South
Yorkshire, S3 7HQ, United Kingdom
| | - Jeppe Madsen
- Department
of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
| | - C. W. Ian Douglas
- Unit
of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Claremont Crescent, Sheffield,
South Yorkshire, S10 2TA, United Kingdom
| | - Sheila MacNeil
- The
Kroto Research Institute, Department of Engineering Materials, University of Sheffield, Broad Lane, Sheffield, South
Yorkshire, S3 7HQ, United Kingdom
| | - Steven P. Armes
- Department
of Chemistry, Dainton Building, University of Sheffield, Brook Hill, Sheffield, South Yorkshire, S3 7HF, United Kingdom
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35
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Furusawa H, Sekine T, Ozeki T. Hydration and Viscoelastic Properties of High- and Low-Density Polymer Brushes Using a Quartz-Crystal Microbalance Based on Admittance Analysis (QCM-A). Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00035] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroyuki Furusawa
- Innovative Flex Course for Frontier Organic Material
Systems (iFront), Graduate School of Science and Engineering, Yamagata University,
4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
- Department
of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Tomomi Sekine
- Department
of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
| | - Tomomitsu Ozeki
- Department
of Biomolecular Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama, Kanagawa 226-8501, Japan
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36
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Kawasaki T, Nakaji-Hirabayashi T, Masuyama K, Fujita S, Kitano H. Complex film of chitosan and carboxymethyl cellulose nanofibers. Colloids Surf B Biointerfaces 2016; 139:95-9. [DOI: 10.1016/j.colsurfb.2015.11.056] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 11/16/2015] [Accepted: 11/26/2015] [Indexed: 02/02/2023]
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37
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Lovett J, Warren NJ, Armes SP. Order-Order Morphological Transitions for Dual Stimulus Responsive Diblock Copolymer Vesicles. Macromolecules 2016; 49:1016-1025. [PMID: 26937051 PMCID: PMC4762544 DOI: 10.1021/acs.macromol.5b02470] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/11/2016] [Indexed: 01/27/2023]
Abstract
A series of non-ionic poly(glycerol monomethacrylate)-poly(2-hydroxypropyl methacrylate) (PGMA-PHPMA) diblock copolymer vesicles has been prepared by reversible addition-fragmentation chain transfer (RAFT) aqueous dispersion polymerization of HPMA at 70 °C at low pH using a carboxylic acid-based chain transfer agent. The degree of polymerization (DP) of the PGMA block was fixed at 43, and the DP of the PHPMA block was systematically varied from 175 to 250 in order to target vesicle phase space. Based on our recent work describing the analogous PGMA-PHPMA diblock copolymer worms [Lovett J. R.; Angew. Chem.2015, 54, 1279-1283], such diblock copolymer vesicles were expected to undergo an order-order morphological transition via ionization of the carboxylic acid end-group on switching the solution pH. Indeed, irreversible vesicle-to-sphere and vesicle-to-worm transitions were observed for PHPMA DPs of 175 and 200, respectively, as judged by turbidimetry, transmission electron microscopy (TEM), and dynamic light scattering (DLS) studies. However, such morphological transitions are surprisingly slow, with relatively long time scales (hours) being required at 20 °C. Moreover, no order-order morphological transitions were observed for vesicles comprising longer membrane-forming blocks (e.g., PGMA43-PHPMA225-250) on raising the pH from pH 3.5 to pH 6.0. However, in such cases the application of a dual stimulus comprising the same pH switch immediately followed by cooling from 20 to 5 °C, induces an irreversible vesicle-to-sphere transition. Finally, TEM and DLS studies conducted in the presence of 100 mM KCl demonstrated that the pH-responsive behavior arising from end-group ionization could be suppressed in the presence of added electrolyte. This is because charge screening suppresses the subtle change in the packing parameter required to drive the morphological transition.
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Affiliation(s)
- Joseph
R. Lovett
- Dainton
Building, Department
of Chemistry, The University of Sheffield, Brook Hill, Sheffield, Yorkshire S3 7HF, U.K.
| | - Nicholas J. Warren
- Dainton
Building, Department
of Chemistry, The University of Sheffield, Brook Hill, Sheffield, Yorkshire S3 7HF, U.K.
| | - Steven P. Armes
- Dainton
Building, Department
of Chemistry, The University of Sheffield, Brook Hill, Sheffield, Yorkshire S3 7HF, U.K.
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38
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Affiliation(s)
- Gaojie Hu
- Polymer Science and Engineering
Department, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
| | - Todd Emrick
- Polymer Science and Engineering
Department, University of Massachusetts Amherst, 120 Governors
Drive, Amherst, Massachusetts 01003, United States
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39
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Shen L, Zhu J. Heterogeneous surfaces to repel proteins. Adv Colloid Interface Sci 2016; 228:40-54. [PMID: 26691416 DOI: 10.1016/j.cis.2015.11.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/06/2015] [Accepted: 11/09/2015] [Indexed: 11/17/2022]
Abstract
The nonspecific adsorption of proteins is usually undesirable on solid surfaces as it induces adverse responses, such as platelet adhesion on medical devices, negative signals of biosensors and contamination blockage of filtration membranes. Thus, an important scheme in material science is to design and fabricate protein-repulsive surfaces. Early approaches in this field focused on homogeneous surfaces comprised of single type functionality. Yet, recent researches have demonstrated that surfaces with heterogeneities (chemistry and topography) show promising performance against protein adsorption. In this review, we will summarize the recent achievements and discuss the new perspectives in the research of developing and characterizing heterogeneous surfaces to repel proteins. The protein repulsion mechanisms of different heterogeneous surfaces will also be discussed in details, followed by the perspective and challenge of this emerging field.
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Affiliation(s)
- Lei Shen
- Key Laboratory for Large-Format Battery Materials and System of the Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Jintao Zhu
- Key Laboratory for Large-Format Battery Materials and System of the Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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40
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Salvage JP, Smith T, Lu T, Sanghera A, Standen G, Tang Y, Lewis AL. Synthesis, characterisation, and in vitro cellular uptake kinetics of nanoprecipitated poly(2-methacryloyloxyethyl phosphorylcholine)-b-poly(2-(diisopropylamino)ethyl methacrylate) (MPC-DPA) polymeric nanoparticle micelles for nanomedicine applications. APPLIED NANOSCIENCE 2016. [DOI: 10.1007/s13204-016-0520-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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41
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Nikolaou V, Simula A, Droesbeke M, Risangud N, Anastasaki A, Kempe K, Wilson P, Haddleton DM. Polymerisation of 2-acrylamido-2-methylpropane sulfonic acid sodium salt (NaAMPS) and acryloyl phosphatidylcholine (APC) via aqueous Cu(0)-mediated radical polymerisation. Polym Chem 2016. [DOI: 10.1039/c5py02016f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The scope of aqueous Cu(0)-mediated living radical polymerisation has been expanded with the preparation of poly(2-acrylamido-2-methylpropane sulfonic acid)sodium salt (P(NaAMPS)) and poly(acryloyl phosphatidycholine) (PAPC).
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Affiliation(s)
| | | | | | | | - Athina Anastasaki
- University of Warwick
- Chemistry Department
- Coventry
- UK
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
| | | | - Paul Wilson
- University of Warwick
- Chemistry Department
- Coventry
- UK
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
| | - David M. Haddleton
- University of Warwick
- Chemistry Department
- Coventry
- UK
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology
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42
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Raffa P, Wever DAZ, Picchioni F, Broekhuis AA. Polymeric Surfactants: Synthesis, Properties, and Links to Applications. Chem Rev 2015; 115:8504-63. [PMID: 26182291 DOI: 10.1021/cr500129h] [Citation(s) in RCA: 184] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Patrizio Raffa
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Dutch Polymer Institute DPI , P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Diego Armando Zakarias Wever
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands.,Dutch Polymer Institute DPI , P.O. Box 902, 5600 AX Eindhoven, The Netherlands
| | - Francesco Picchioni
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Antonius A Broekhuis
- Department of Chemical Engineering-Product Technology, University of Groningen , Nijenborgh 4, 9747 AG Groningen, The Netherlands
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43
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Faraguna F, Vidović E, Jukić A. Reactivity ratios and copolymer properties of 2-(diisopropylamino)ethyl methacrylate with methyl methacrylate and styrene. POLYM INT 2015. [DOI: 10.1002/pi.4949] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fabio Faraguna
- University of Zagreb; Faculty of Chemical Engineering and Technology; PO Box 177 HR-10000 Zagreb Croatia
| | - Elvira Vidović
- University of Zagreb; Faculty of Chemical Engineering and Technology; PO Box 177 HR-10000 Zagreb Croatia
| | - Ante Jukić
- University of Zagreb; Faculty of Chemical Engineering and Technology; PO Box 177 HR-10000 Zagreb Croatia
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44
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Xu JW, Xu F, Luo YL. Core crosslinked H-type poly(methacrylic acid)-block-hydroxyl terminated polybutadiene-block-poly(methacrylic acid) four-armed star block copolymer micelles for intercellular drug release. J BIOACT COMPAT POL 2015. [DOI: 10.1177/0883911515578871] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
H-type four-armed star block copolymers with hydroxyl-terminated polybutadiene as hydrophobic sections and poly(methacrylic acid) as hydrophilic fragments were synthesized through atom transform radical polymerization and the follow-up acidolysis, named PMAA2- b-HTPB- b-PMAA2. The core crosslinking reaction was conducted by ultraviolet light irradiation. 1H nuclear magnetic resonance, Fourier transform infrared, size exclusion chromatography, and thermal gravimetric analysis were adopted to confirm the chemical structure of the resulting copolymers. The effect of the ultraviolet light crosslinking on the physicochemical properties of the block copolymer micelles was investigated by fluorescent spectrometry, ultraviolet transmittance, dynamic light scattering, and transmission electron microscope measurements. The results showed that the crosslinking resulted in formation of the stable copolymer micelles and change in the physicochemical parameters, for example, lower critical micelle concentration and smaller micellar size than the uncrosslinked one. Drug loading and in vitro drug release disclosed that the crosslinked copolymer micelles had enhanced drug loading capacity and encapsulation efficiency, less drug leakage, and thus smaller harm to the normal cells but better therapy effect than the uncrosslinked counterpart by the aid of the pH-induced paclitaxel release. The copolymer micelles exhibited pH-dependent cytotoxicity, and therefore, they might be a promising drug target release carrier in biomedical applications.
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Affiliation(s)
- Jing-Wen Xu
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, P.R. China
| | - Feng Xu
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, P.R. China
| | - Yan-Ling Luo
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an, P.R. China
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45
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Salvage JP, Thom C, Lewis AL, Phillips GJ, Lloyd AW. Nanoprecipitation of polymeric nanoparticle micelles based on 2-methacryloyloxyethyl phosphorylcholine (MPC) with 2-(diisopropylamino)ethyl methacrylate (DPA), for intracellular delivery applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:150. [PMID: 25773229 PMCID: PMC4359341 DOI: 10.1007/s10856-015-5480-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 03/01/2015] [Indexed: 05/04/2023]
Abstract
Biodistribution of nanoparticle-based intracellular delivery systems is mediated primarily by particle size and physicochemical properties. As such, overcoming the rapid removal of these by the reticuloendothelial system remains a significant challenge. To date, a number of copolymer nanoparticle systems based on 2-methacryloyloxyethyl phosphorylcholine (MPC) with 2-(diisopropylamino)ethyl methacrylate (DPA), displaying biomimetic and pH responsive properties, have been published, however these have been predominately polymersome based, whilst micelle systems have remained relatively unexplored. This study utilised nanoprecipitation to investigate the effects of solvent and buffer choice upon micelle size and polydispersity, and found using methanol produced monodisperse micelles of circa 70 nm diameter, whilst ethanol produced polydisperse systems with nanoparticles of circa 128 nm diameter. The choice of aqueous buffer, dialysis of the systems, extended storage, and exposure to a wide temperature range (5-70 °C) had no significant effect on micelle size, and the systems were highly resistant to dilution, indicating excellent colloidal stability. Optimisation of the nanoprecipitation process, post precipitation, was investigated, and model drugs successfully loaded whilst maintaining system stability. Subsequent in vitro studies suggested that the micelles were of negligible cellular toxicity, and an apparent cellular uptake was observed via confocal laser scanning microscopy. This paper presents the first report of an optimised nanoprecipitation methodology for the formation of MPC-DPA nanoparticle micelles, and in doing so achieved monodisperse systems with the size and physicochemical characteristics seen as desirable for long circulating therapeutic delivery vehicles.
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Affiliation(s)
- Jonathan P Salvage
- School of Pharmacy and Biomolecular Sciences, University of Brighton, Huxley Building, Lewes Road, Brighton, BN2 4GJ, UK,
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46
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Tuncer C, Samav Y, Ülker D, Baker SB, Bütün V. Multi-responsive microgel of a water-soluble monomer via emulsion polymerization. J Appl Polym Sci 2015. [DOI: 10.1002/app.42072] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Cansel Tuncer
- Department of Chemistry, Faculty of Arts and Science; Eskisehir Osmangazi University; 26480 Eskisehir Turkey
| | - Yasemin Samav
- Department of Chemistry, Faculty of Arts and Science; Eskisehir Osmangazi University; 26480 Eskisehir Turkey
- The Program of Chemistry; Vocational School of Higher Education, Bilecik Seyh Edebali University; 11210 Bilecik Turkey
| | - Damla Ülker
- Department of Polymer Science and Technology; Institute of Science, Eskisehir Osmangazi University; 26480 Eskisehir Turkey
| | - Serife Betül Baker
- Department of Polymer Science and Technology; Institute of Science, Eskisehir Osmangazi University; 26480 Eskisehir Turkey
| | - Vural Bütün
- Department of Chemistry, Faculty of Arts and Science; Eskisehir Osmangazi University; 26480 Eskisehir Turkey
- Department of Polymer Science and Technology; Institute of Science, Eskisehir Osmangazi University; 26480 Eskisehir Turkey
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47
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Bortolotto T, Facchinetto SE, Trindade SG, Ossig A, Petzhold CL, Vargas J, Rodrigues OED, Giacomelli C, Schmidt V. Polymer-coated palladium nanoparticle catalysts for Suzuki coupling reactions. J Colloid Interface Sci 2015; 439:154-61. [DOI: 10.1016/j.jcis.2014.10.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 10/17/2014] [Accepted: 10/24/2014] [Indexed: 11/30/2022]
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48
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Hu G, Parelkar SS, Emrick T. A facile approach to hydrophilic, reverse zwitterionic, choline phosphate polymers. Polym Chem 2015. [DOI: 10.1039/c4py01292e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We describe a facile synthesis of an n-butyl substituted choline phosphate monomer (MBP), and its polymerization to afford polyMBP and its copolymers. PolyMBP provides access to water-soluble choline phosphate polymers that by cell culture analysis exhibit low toxicity and immunogenicity.
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Affiliation(s)
- Gaojie Hu
- Department of Polymer Science and Engineering
- University of Massachusetts Amherst
- Amherst
- USA
| | - Sangram S. Parelkar
- Department of Polymer Science and Engineering
- University of Massachusetts Amherst
- Amherst
- USA
| | - Todd Emrick
- Department of Polymer Science and Engineering
- University of Massachusetts Amherst
- Amherst
- USA
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49
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Qian J, Berkland C. pH-sensitive triblock copolymers for efficient siRNA encapsulation and delivery. Polym Chem 2015. [DOI: 10.1039/c5py00219b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A pH-sensitive triblock copolymer was synthesized for efficient siRNA encapsulation by double emulsion and the formed nanocapsules showed successful delivery of siRNA in vitro.
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Affiliation(s)
- Jian Qian
- Department of Pharmaceutical Chemistry
- The University of Kansas
- Lawrence
- USA
| | - Cory Berkland
- Department of Pharmaceutical Chemistry
- The University of Kansas
- Lawrence
- USA
- Department of Chemical and Petroleum Engineering
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50
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Ma X, Wang Y, Zhao T, Li Y, Su LC, Wang Z, Huang G, Sumer BD, Gao J. Ultra-pH-sensitive nanoprobe library with broad pH tunability and fluorescence emissions. J Am Chem Soc 2014; 136:11085-92. [PMID: 25020134 PMCID: PMC4132961 DOI: 10.1021/ja5053158] [Citation(s) in RCA: 198] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
pH is an important physiological parameter that plays a critical role in cellular and tissue homeostasis. Conventional small molecular pH sensors (e.g., fluorescein, Lysosensor) are limited by broad pH response and restricted fluorescent emissions. Previously, we reported the development of ultra-pH-sensitive (UPS) nanoprobes with sharp pH response using fluorophores with small Stokes shifts (<40 nm). In this study, we expand the UPS design to a library of nanoprobes with operator-predetermined pH transitions and wide fluorescent emissions (400-820 nm). A copolymer strategy was employed to fine tune the hydrophobicity of the ionizable hydrophobic block, which led to a desired transition pH based on standard curves. Interestingly, matching the hydrophobicity of the monomers was critical to achieve a sharp pH transition. To overcome the fluorophore limitations, we introduced copolymers conjugated with fluorescence quenchers (FQs). In the micelle state, the FQs effectively suppressed the emission of fluorophores regardless of their Stokes shifts and further increased the fluorescence activation ratios. As a proof of concept, we generated a library of 10 nanoprobes each encoded with a unique fluorophore. The nanoprobes cover the entire physiologic range of pH (4-7.4) with 0.3 pH increments. Each nanoprobe maintained a sharp pH transition (on/off < 0.25 pH) and high fluorescence activation ratio (>50-fold between on and off states). The UPS library provides a useful toolkit to study pH regulation in many pathophysiological indications (e.g., cancer, lysosome catabolism) as well as establishing tumor-activatable systems for cancer imaging and drug delivery.
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Affiliation(s)
- Xinpeng Ma
- Department of Pharmacology and §Department of Otolaryngology, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center , Dallas, Texas 75390, United States
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