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Heuberger L, Korpidou M, Eggenberger OM, Kyropoulou M, Palivan CG. Current Perspectives on Synthetic Compartments for Biomedical Applications. Int J Mol Sci 2022; 23:5718. [PMID: 35628527 PMCID: PMC9145047 DOI: 10.3390/ijms23105718] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 12/04/2022] Open
Abstract
Nano- and micrometer-sized compartments composed of synthetic polymers are designed to mimic spatial and temporal divisions found in nature. Self-assembly of polymers into compartments such as polymersomes, giant unilamellar vesicles (GUVs), layer-by-layer (LbL) capsules, capsosomes, or polyion complex vesicles (PICsomes) allows for the separation of defined environments from the exterior. These compartments can be further engineered through the incorporation of (bio)molecules within the lumen or into the membrane, while the membrane can be decorated with functional moieties to produce catalytic compartments with defined structures and functions. Nanometer-sized compartments are used for imaging, theranostic, and therapeutic applications as a more mechanically stable alternative to liposomes, and through the encapsulation of catalytic molecules, i.e., enzymes, catalytic compartments can localize and act in vivo. On the micrometer scale, such biohybrid systems are used to encapsulate model proteins and form multicompartmentalized structures through the combination of multiple compartments, reaching closer to the creation of artificial organelles and cells. Significant progress in therapeutic applications and modeling strategies has been achieved through both the creation of polymers with tailored properties and functionalizations and novel techniques for their assembly.
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Affiliation(s)
- Lukas Heuberger
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
| | - Maria Korpidou
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
| | - Olivia M. Eggenberger
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
| | - Myrto Kyropoulou
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
- NCCR-Molecular Systems Engineering, Mattenstrasse 24a, BPR 1095, 4058 Basel, Switzerland
| | - Cornelia G. Palivan
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland; (L.H.); (M.K.); (O.M.E.); (M.K.)
- NCCR-Molecular Systems Engineering, Mattenstrasse 24a, BPR 1095, 4058 Basel, Switzerland
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2
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Jacobs GP. Irradiation of pharmaceuticals: A literature review. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2021.109795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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3
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Adsorption immobilization of biomolecules from subphase on Langmuir monolayers of organo-modified single-walled carbon nanotube. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126559] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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4
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Di Leone S, Vallapurackal J, Yorulmaz Avsar S, Kyropolou M, Ward TR, Palivan CG, Meier W. Expanding the Potential of the Solvent-Assisted Method to Create Bio-Interfaces from Amphiphilic Block Copolymers. Biomacromolecules 2021; 22:3005-3016. [PMID: 34105950 DOI: 10.1021/acs.biomac.1c00424] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Artificial membranes, as materials with biomimetic properties, can be applied in various fields, such as drug screening or bio-sensing. The solvent-assisted method (SA) represents a straightforward method to prepare lipid solid-supported membranes. It overcomes the main limitations of established membrane preparation methods, such as Langmuir-Blodgett (LB) or vesicle fusion. However, it has not yet been applied to create artificial membranes based on amphiphilic block copolymers, despite their enhanced mechanical stability compared to lipid-based membranes and bio-compatible properties. Here, we applied the SA method on different amphiphilic di- and triblock poly(dimethylsiloxane)-block-poly(2-methyl-2-oxazoline) (PDMS-b-PMOXA) copolymers and optimized the conditions to prepare artificial membranes on a solid support. The real-time membrane formation, the morphology, and the mechanical properties have been evaluated by a combination of atomic force microscopy and quartz crystal microbalance. Then, selected biomolecules including complementary DNA strands and an artificial deallylase metalloenzyme (ADAse) were incorporated into these membranes relying on the biotin-streptavidin technology. DNA strands served to establish the capability of these synthetic membranes to interact with biomolecules by preserving their correct conformation. The catalytic activity of the ADAse following its membrane anchoring induced the functionality of the biomimetic platform. Polymer membranes on solid support as prepared by the SA method open new opportunities for the creation of artificial membranes with tailored biomimetic properties and functionality.
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Affiliation(s)
- Stefano Di Leone
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland.,School of Life Sciences, Institute for Chemistry and Bioanalytics, University of Applied Sciences Northwestern Switzerland (FHNW), Grundenstrasse 40, 4132 Muttenz, Switzerland
| | - Jaicy Vallapurackal
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Saziye Yorulmaz Avsar
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Myrto Kyropolou
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Thomas R Ward
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Cornelia G Palivan
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Wolfgang Meier
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
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5
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Kyropoulou M, Yorulmaz Avsar S, Schoenenberger CA, Palivan CG, Meier WP. From spherical compartments to polymer films: exploiting vesicle fusion to generate solid supported thin polymer membranes. NANOSCALE 2021; 13:6944-6952. [PMID: 33885496 DOI: 10.1039/d1nr01122g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Solid supported polymer membranes as scaffold for the insertion of functional biomolecules provide the basis for mimicking natural membranes. They also provide the means for unraveling biomolecule-membrane interactions and engineering platforms for biosensing. Vesicle fusion is an established procedure to obtain solid supported lipid bilayers but the more robust polymer vesicles tend to resist fusion and planar membranes rarely form. Here, we build on vesicle fusion to develop a refined and efficient way to produce solid supported membranes based on poly(dimethylsiloxane)-poly(2-methyl-2-oxazoline) (PMOXA-b-PDMS-b-PMOXA) amphiphilic triblock copolymers. We first create thiol-bearing polymer vesicles (polymersomes) and anchor them on a gold substrate. An osmotic shock then provokes polymersome rupture and drives planar film formation. Prerequisite for a uniform amphiphilic planar membrane is the proper combination of immobilized polymersomes and osmotic shock conditions. Thus, we explored the impact of the hydrophobic PDMS block length of the polymersome on the formation and the characteristics of the resulting solid supported polymer assemblies by quarz crystal microbalance with dissipation monitoring (QCM-D), atomic force microscopy (AFM) and spectroscopic ellipsometry (SE). When the PDMS block is short enough, attached polymersomes restructure in response to osmotic shock, resulting in a uniform planar membrane. Our approach to rapidly form planar polymer membranes by vesicle fusion brings many advantages to the development of synthetic planar membranes for bio-sensing and biotechnological applications.
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Affiliation(s)
- Myrto Kyropoulou
- Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4058 Basel, Switzerland.
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6
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Mazurkiewicz W, Podrażka M, Jarosińska E, Kappalakandy Valapil K, Wiloch M, Jönsson‐Niedziółka M, Witkowska Nery E. Paper‐Based Electrochemical Sensors and How to Make Them (Work). ChemElectroChem 2020. [DOI: 10.1002/celc.202000512] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Wojciech Mazurkiewicz
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Marta Podrażka
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Elżbieta Jarosińska
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | | | - Magdalena Wiloch
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | | | - Emilia Witkowska Nery
- Institute of Physical ChemistryPolish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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7
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Di Leone S, Avsar SY, Belluati A, Wehr R, Palivan CG, Meier W. Polymer–Lipid Hybrid Membranes as a Model Platform to Drive Membrane–Cytochrome c Interaction and Peroxidase-like Activity. J Phys Chem B 2020; 124:4454-4465. [DOI: 10.1021/acs.jpcb.0c02727] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Stefano Di Leone
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
- School of Life Sciences, Institute for Chemistry and Bioanalytics, University of Applied Sciences Northwestern Switzerland (FHNW), Grundenstrasse 40, 4132 Muttenz, Switzerland
| | - Saziye Yorulmaz Avsar
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Andrea Belluati
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Riccardo Wehr
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Cornelia G. Palivan
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Wolfgang Meier
- Chemistry Department, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland
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8
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Tsai HC, Yang YL, Sheng YJ, Tsao HK. Formation of Asymmetric and Symmetric Hybrid Membranes of Lipids and Triblock Copolymers. Polymers (Basel) 2020; 12:polym12030639. [PMID: 32168935 PMCID: PMC7183320 DOI: 10.3390/polym12030639] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/08/2020] [Accepted: 03/10/2020] [Indexed: 12/28/2022] Open
Abstract
Hybrid membranes formed by co-assembly of AxByAx (hydrophilic-hydrophobic-hydrophilic) triblock copolymers into lipid bilayers are investigated by dissipative particle dynamics. Homogeneous hybrid membranes are developed as lipids and polymers are fully compatible. The polymer conformations can be simply classified into bridge- and loop-structures in the membranes. It is interesting to find that the long-time fraction of loop-conformation (fL) of copolymers in the membrane depends significantly on the hydrophilic block length (x). As x is small, an equilibrium fL* always results irrespective of the initial conformation distribution and its value depends on the hydrophobic block length (y). For large x, fL tends to be time-invariant because polymers are kinetically trapped in their initial structures. Our findings reveal that only symmetric hybrid membranes are formed for small x, while membranes with stable asymmetric leaflets can be constructed with large x. The effects of block lengths on the polymer conformations, such as transverse and lateral spans (d⊥ and d‖) of bridge- and loop-conformations, are discussed as well.
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Affiliation(s)
- Hsiang-Chi Tsai
- Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Yan-Ling Yang
- Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan
| | - Yu-Jane Sheng
- Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan
- Correspondence: (Y.-J.S.); (H.-K.T.)
| | - Heng-Kwong Tsao
- Department of Chemical and Materials Engineering, National Central University, Jhongli 320, Taiwan
- Correspondence: (Y.-J.S.); (H.-K.T.)
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9
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Wu D, Rigo S, Di Leone S, Belluati A, Constable EC, Housecroft CE, Palivan CG. Brushing the surface: cascade reactions between immobilized nanoreactors. NANOSCALE 2020; 12:1551-1562. [PMID: 31859312 DOI: 10.1039/c9nr08502e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Functionalization of hard or soft surfaces with, for example, ligands, enzymes or proteins, is an effective and practical methodology for the development of new applications. We report the assembly of two types of nanoreactors based upon poly(dimethylsiloxane)-block-poly(2-methyl-2-oxazoline) (PDMS-b-PMOXA) diblock copolymers as scaffold, uricase and lactoperoxidase as bio-catalysts located within the nanoreactors, and melittin as the biopores inserted into the hydrophobic shell. The nanoreactors were immobilized on poly(2-hydroxyethyl methacrylate)-co-poly(2-aminoethyl methacrylate hydrochloride) (PHEMA-co-P(2-AEMA·HCl) brushes-grafted wafer surfaces by utilizing the strong supramolecular interactions between biotin and streptavidin. The (PHEMA-co-P(2-AEMA·HCl) brushes on silicon surfaces were prepared by a surface initiating atom transfer radical polymerization (ATRP) "graft-from" technique. Cascade reactions between different surface-anchored nanoreactors were demonstrated by converting Amplex® Red to the fluorescent probe resorufin by using the H2O2 produced from uric acid and H2O. The detailed properties of the nanoreactors on the functionalized surface including the binding behaviours and cascade reactions were investigated using emission spectroscopy, transmission electron microscopy (TEM), light scattering (LS), atomic force microscopy (AFM) and a quartz crystal microbalance (QCM-D). The results are proof-of-principle for the preparation of catalytically functional engineered surface materials and lay the foundation for applying this advanced functional surface material in biosensing, implanting and antimicrobial materials preparation.
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Affiliation(s)
- Dalin Wu
- Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, 4058 Basel, Switzerland.
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10
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Chimisso V, Maffeis V, Hürlimann D, Palivan CG, Meier W. Self-Assembled Polymeric Membranes and Nanoassemblies on Surfaces: Preparation, Characterization, and Current Applications. Macromol Biosci 2019; 20:e1900257. [PMID: 31549783 DOI: 10.1002/mabi.201900257] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/30/2019] [Indexed: 01/11/2023]
Abstract
Biomembranes play a crucial role in a multitude of biological processes, where high selectivity and efficiency are key points in the reaction course. The outstanding performance of biological membranes is based on the coupling between the membrane and biomolecules, such as membrane proteins. Polymer-based membranes and assemblies represent a great alternative to lipid ones, as their presence not only dramatically increases the mechanical stability of such systems, but also opens the scope to a broad range of chemical functionalities, which can be fine-tuned to selectively combine with a specific biomolecule. Tethering the membranes or nanoassemblies on a solid support opens the way to a class of functional surfaces finding application as sensors, biocomputing systems, molecular recognition, and filtration membranes. Herein, the design, physical assembly, and biomolecule attachment/insertion on/within solid-supported polymeric membranes and nanoassemblies are presented in detail with relevant examples. Furthermore, the models and applications for these materials are highlighted with the recent advances in each field.
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Affiliation(s)
- Vittoria Chimisso
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4056, Basel, Switzerland
| | - Viviana Maffeis
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4056, Basel, Switzerland
| | - Dimitri Hürlimann
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4056, Basel, Switzerland
| | - Cornelia G Palivan
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4056, Basel, Switzerland
| | - Wolfgang Meier
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4056, Basel, Switzerland
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11
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Koenig M, König U, Eichhorn KJ, Müller M, Stamm M, Uhlmann P. In-situ-Investigation of Enzyme Immobilization on Polymer Brushes. Front Chem 2019; 7:101. [PMID: 30899756 PMCID: PMC6416228 DOI: 10.3389/fchem.2019.00101] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 05/05/2019] [Indexed: 11/13/2022] Open
Abstract
Herein, we report on the use of a combined setup of quartz-crystal microbalance, with dissipation monitoring and spectroscopic ellipsometry, to comprehensively investigate the covalent immobilization of an enzyme to a polymer layer. All steps of the covalent reaction of the model enzyme glucose oxidase with the poly(acrylic acid) brush by carbodiimide chemistry, were monitored in-situ. Data were analyzed using optical and viscoelastic modeling. A nearly complete collapse of the polymer chains was found upon activation of the carboxylic acid groups with N-(3-Dimethylaminopropyl)-N'-ethylcarbodiimide and N-Hydroxysuccinimide. The reaction with the amine groups of the enzyme occurs simultaneously with re-hydration of the polymer layer. Significantly more enzyme was immobilized on the surface compared to physical adsorption at similar conditions, at the same pH. It was found that the pH responsive swelling behavior was almost not affected by the presence of the enzyme.
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Affiliation(s)
- Meike Koenig
- Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Ulla König
- Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Klaus-Jochen Eichhorn
- Department of Analytics, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
| | - Martin Müller
- Department of Polyelectrolytes and Dispersions, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
- Physical Chemistry of Polymer Materials, Technische Universität Dresden, Dresden, Germany
| | - Manfred Stamm
- Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
- Physical Chemistry of Polymer Materials, Technische Universität Dresden, Dresden, Germany
| | - Petra Uhlmann
- Department of Nanostructured Materials, Leibniz Institute of Polymer Research Dresden, Dresden, Germany
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE, United States
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12
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Yorulmaz Avsar S, Kyropoulou M, Di Leone S, Schoenenberger CA, Meier WP, Palivan CG. Biomolecules Turn Self-Assembling Amphiphilic Block Co-polymer Platforms Into Biomimetic Interfaces. Front Chem 2019; 6:645. [PMID: 30671429 PMCID: PMC6331732 DOI: 10.3389/fchem.2018.00645] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 12/11/2018] [Indexed: 12/29/2022] Open
Abstract
Biological membranes constitute an interface between cells and their surroundings and form distinct compartments within the cell. They also host a variety of biomolecules that carry out vital functions including selective transport, signal transduction and cell-cell communication. Due to the vast complexity and versatility of the different membranes, there is a critical need for simplified and specific model membrane platforms to explore the behaviors of individual biomolecules while preserving their intrinsic function. Information obtained from model membrane platforms should make invaluable contributions to current and emerging technologies in biotechnology, nanotechnology and medicine. Amphiphilic block co-polymers are ideal building blocks to create model membrane platforms with enhanced stability and robustness. They form various supramolecular assemblies, ranging from three-dimensional structures (e.g., micelles, nanoparticles, or vesicles) in aqueous solution to planar polymer membranes on solid supports (e.g., polymer cushioned/tethered membranes,) and membrane-like polymer brushes. Furthermore, polymer micelles and polymersomes can also be immobilized on solid supports to take advantage of a wide range of surface sensitive analytical tools. In this review article, we focus on self-assembled amphiphilic block copolymer platforms that are hosting biomolecules. We present different strategies for harnessing polymer platforms with biomolecules either by integrating proteins or peptides into assemblies or by attaching proteins or DNA to their surface. We will discuss how to obtain synthetic structures on solid supports and their characterization using different surface sensitive analytical tools. Finally, we highlight present and future perspectives of polymer micelles and polymersomes for biomedical applications and those of solid-supported polymer membranes for biosensing.
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Hu SW, Huang CY, Tsao HK, Sheng YJ. Hybrid membranes of lipids and diblock copolymers: From homogeneity to rafts to phase separation. Phys Rev E 2019; 99:012403. [PMID: 30780280 DOI: 10.1103/physreve.99.012403] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Indexed: 06/09/2023]
Abstract
Hybrid lipid-polymer vesicles can integrate benefits of liposomes and polymersomes. In this work, the phase behavior of hybrid membranes containing lipids and diblock copolymers is explored by dissipative particle dynamics simulations. The influences of lipid unsaturation and thickness mismatch between lipids and polymers are considered. The transition from the mixing state (homogeneous distribution) to the demixing state (formation of bilayered lipid-rich domains) is always observed as the lipid concentration (φ_{l}) exceeds a critical value, which increases with the degree of unsaturation. It is found that phase separation is driven by weak energy incompatibility between the hydrophobic segments of lipids and polymers. When the effect of thickness mismatch becomes significant, the occurrence of the demixing state is retarded, and monolayer lipid rafts emerge before phase separation. Lipid fluidity associated with the physical state of a hybrid membrane can be characterized by lateral lipid diffusivity (D_{l}). In the polymer-rich membrane, D_{l} is higher in the mixing state, but decreases generally with φ_{l} due to lipid-lipid interactions and interdigitation.
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Affiliation(s)
- Ssu-Wei Hu
- Department of Chemical and Materials Engineering, National Central University, Jhongli, Taiwan 320, Republic of China
| | - Chun-Yen Huang
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan 106, Republic of China
| | - Heng-Kwong Tsao
- Department of Chemical and Materials Engineering, National Central University, Jhongli, Taiwan 320, Republic of China
- Department of Physics, National Central University, Jhongli, Taiwan 320, Republic of China
| | - Yu-Jane Sheng
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan 106, Republic of China
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14
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Draghici C, Mikhalevich V, Gunkel-Grabole G, Kowal J, Meier W, Palivan CG. Biomimetic Planar Polymer Membranes Decorated with Enzymes as Functional Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9015-9024. [PMID: 29972642 DOI: 10.1021/acs.langmuir.8b00541] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Functional surfaces were generated by a combination of enzymes with polymer membranes composed of an amphiphilic, asymmetric block copolymer poly(ethyleneglycol)- block-poly(γ-methyl-ε-caprolactone)- block-poly[(2-dimethylamino)ethylmethacrylate]. First, polymer films formed at the air-water interface were transferred in different sequences onto silica solid support using the Langmuir-Blodgett technique, generating homogeneous monolayers and bilayers. A detailed characterization of these films provided insight into their properties (film thickness, wettability, topography, and roughness). On the basis of these findings, the most promising membranes were selected for enzyme attachment. Functional surfaces were then generated by the adsorption of two model enzymes that can convert phenol and its derivatives (laccase and tyrosinase), well known as high-risk pollutants of drinking and natural water. Both enzymes preserved their activity upon immobilization with respect to their substrates. Depending on the properties of the polymer films, different degrees of enzymatic activity were observed: bilayers provided the best conditions in terms of both overall stability and enzymatic activity. The interaction between amphiphilic triblock copolymer films and enzymes is exploited to engineer "active surfaces" with specific functionalities and high efficacy resulting from the intrinsic activity of the biomolecules that is preserved by an appropriate synthetic environment.
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Affiliation(s)
- Camelia Draghici
- Chemistry Department , University of Basel , Mattenstrasse 24a , BPR 1096, 4002 Basel , Switzerland
- Product Design, Mechatronics and Environment Department , Transilvania University of Brasov , 29 Eroilor Blv , 500036 Brasov , Romania
| | - Viktoria Mikhalevich
- Chemistry Department , University of Basel , Mattenstrasse 24a , BPR 1096, 4002 Basel , Switzerland
| | - Gesine Gunkel-Grabole
- Chemistry Department , University of Basel , Mattenstrasse 24a , BPR 1096, 4002 Basel , Switzerland
| | - Justyna Kowal
- Chemistry Department , University of Basel , Mattenstrasse 24a , BPR 1096, 4002 Basel , Switzerland
| | - Wolfgang Meier
- Chemistry Department , University of Basel , Mattenstrasse 24a , BPR 1096, 4002 Basel , Switzerland
| | - Cornelia G Palivan
- Chemistry Department , University of Basel , Mattenstrasse 24a , BPR 1096, 4002 Basel , Switzerland
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15
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Graft copolymerization by ionization radiation, characterization, and enzymatic activity of temperature-responsive SR- g -PNVCL loaded with lysozyme. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2018.03.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Yang YL, Chen MY, Tsao HK, Sheng YJ. Dynamics of bridge-loop transformation in a membrane with mixed monolayer/bilayer structures. Phys Chem Chem Phys 2018; 20:6582-6590. [PMID: 29450428 DOI: 10.1039/c7cp08107c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Instead of forming a typical bilayer or monolayer membrane, both the bridge (I-shape) and loop (U-shape) conformations coexist in the planar membranes formed by ABA triblock copolymers in a selective solvent. The non-equilibrium and equilibrium relaxation dynamics of polymer conformations are monitored. The non-equilibrium relaxation time depends on the initial composition and increases with an increase in the immiscibility between A and B blocks. The equilibrium composition of the loop-shape polymer is independent of the initial composition and A-B immiscibility. However, the extent of equilibrium composition fluctuations subsides as the A and B blocks become highly incompatible. The influences of the A-B immiscibility on the geometrical, mechanical, and transport properties of the membrane have also been investigated. As the immiscibility increases, the overall membrane thickness and the B block layer thickness (h) increase because of the increment in the molecular packing density. As a result, both the stretching (KA) and bending (KB) moduli grow significantly with the increasing A-B immiscibility. Consistent with the case of typical membranes, the ratio KB/KAh2 = 2 × 10-3 is a constant. Although the lateral diffusivity of polymers is insensitive to immiscibility, the membrane permeability decreases substantially as the A-B immiscibility is increased.
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Affiliation(s)
- Yan-Ling Yang
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan 106, Republic of China.
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17
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Wang W, Julaiti P, Ye G, Huo X, Lu Y, Chen J. Controlled Architecture of Glass Fiber/Poly(glycidyl methacrylate) Composites via Surface-Initiated ICAR ATRP Mediated by Mussel-Inspired Polydopamine Chemistry. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b03065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Wenqing Wang
- Collaborative
Innovation Center of Advanced Nuclear Energy Technology, Institute
of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China
- Beijing
Key Lab of Radioactive Waste Treatment, Tsinghua University, Beijing, 100084, China
| | - Paziliya Julaiti
- Collaborative
Innovation Center of Advanced Nuclear Energy Technology, Institute
of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China
- Faculty
of Chemical Science and Engineering, China University of Petroleum, Beijing, 102249, China
| | - Gang Ye
- Collaborative
Innovation Center of Advanced Nuclear Energy Technology, Institute
of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China
- Beijing
Key Lab of Radioactive Waste Treatment, Tsinghua University, Beijing, 100084, China
| | - Xiaomei Huo
- Collaborative
Innovation Center of Advanced Nuclear Energy Technology, Institute
of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China
| | - Yuexiang Lu
- Collaborative
Innovation Center of Advanced Nuclear Energy Technology, Institute
of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China
- Beijing
Key Lab of Radioactive Waste Treatment, Tsinghua University, Beijing, 100084, China
| | - Jing Chen
- Collaborative
Innovation Center of Advanced Nuclear Energy Technology, Institute
of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China
- Beijing
Key Lab of Radioactive Waste Treatment, Tsinghua University, Beijing, 100084, China
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18
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Hu D, Zuo C, Cao Q. Physical deposition behavior of charged amphiphilic diblock copolymers: Effect of charge distribution and electric field. POLYMER SCIENCE SERIES A 2017. [DOI: 10.1134/s0965545x1702002x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Reinicke S, Rees HC, Espeel P, Vanparijs N, Bisterfeld C, Dick M, Rosencrantz RR, Brezesinski G, de Geest BG, Du Prez FE, Pietruszka J, Böker A. Immobilization of 2-Deoxy-d-ribose-5-phosphate Aldolase in Polymeric Thin Films via the Langmuir-Schaefer Technique. ACS APPLIED MATERIALS & INTERFACES 2017; 9:8317-8326. [PMID: 28186396 DOI: 10.1021/acsami.6b13632] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A synthetic protocol for the fabrication of ultrathin polymeric films containing the enzyme 2-deoxy-d-ribose-5-phosphate aldolase from Escherichia coli (DERAEC) is presented. Ultrathin enzymatically active films are useful for applications in which only small quantities of active material are needed and at the same time quick response and contact times without diffusion limitation are wanted. We show how DERA as an exemplary enzyme can be immobilized in a thin polymer layer at the air-water interface and transferred to a suitable support by the Langmuir-Schaefer technique under full conservation of enzymatic activity. The polymer in use is a poly(N-isopropylacrylamide-co-N-2-thiolactone acrylamide) (P(NIPAAm-co-TlaAm)) statistical copolymer in which the thiolactone units serve a multitude of purposes including hydrophobization of the polymer, covalent binding of the enzyme and the support and finally cross-linking of the polymer matrix. The application of this type of polymer keeps the whole approach simple as additional cocomponents such as cross-linkers are avoided.
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Affiliation(s)
- Stefan Reinicke
- Department of Functional Protein Systems and Biotechnology, Fraunhofer Institute of Applied Polymer Research (IAP) , Geiselbergstraße 69, 14476, Potsdam-Golm, Germany
| | - Huw C Rees
- Department of Chemistry, University of Chicago , Chicago, Illinois 60637, United States
| | - Pieter Espeel
- Department of Organic and Macromolecular Chemistry, Polymer Chemistry Research Group, Ghent University , Krijgslaan 281 S4-bis, 9000 Ghent, Belgium
| | - Nane Vanparijs
- Department of Pharmaceutics, Ghent University , Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Carolin Bisterfeld
- Institut of Bioorganic Chemistry, Heinrich Heine University of Düsseldorf at Forschungszentrum Jülich , Stetternicher Forst, D-52426 Jülich, Germany
| | - Markus Dick
- Institut of Bioorganic Chemistry, Heinrich Heine University of Düsseldorf at Forschungszentrum Jülich , Stetternicher Forst, D-52426 Jülich, Germany
| | - Ruben R Rosencrantz
- Department of Functional Protein Systems and Biotechnology, Fraunhofer Institute of Applied Polymer Research (IAP) , Geiselbergstraße 69, 14476, Potsdam-Golm, Germany
- Polymer Materials and Polymer Technologies, University of Potsdam , 14476, Potsdam-Golm, Germany
| | - Gerald Brezesinski
- Max Planck Institute of Colloids and Interfaces , Science Park Potsdam-Golm, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Bruno G de Geest
- Department of Pharmaceutics, Ghent University , Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Filip E Du Prez
- Department of Organic and Macromolecular Chemistry, Polymer Chemistry Research Group, Ghent University , Krijgslaan 281 S4-bis, 9000 Ghent, Belgium
| | - Jörg Pietruszka
- Institut of Bioorganic Chemistry, Heinrich Heine University of Düsseldorf at Forschungszentrum Jülich , Stetternicher Forst, D-52426 Jülich, Germany
- IBG-1: Biotechnology, Forschungszentrum Jülich GmbH , 52425 Jülich, Germany
| | - Alexander Böker
- Department of Functional Protein Systems and Biotechnology, Fraunhofer Institute of Applied Polymer Research (IAP) , Geiselbergstraße 69, 14476, Potsdam-Golm, Germany
- Polymer Materials and Polymer Technologies, University of Potsdam , 14476, Potsdam-Golm, Germany
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20
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Palivan CG, Goers R, Najer A, Zhang X, Car A, Meier W. Bioinspired polymer vesicles and membranes for biological and medical applications. Chem Soc Rev 2016; 45:377-411. [DOI: 10.1039/c5cs00569h] [Citation(s) in RCA: 413] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Biological membranes play an essential role in living organisms by providing stable and functional compartments, supporting signalling and selective transport. Combining synthetic polymer membranes with biological molecules promises to be an effective strategy to mimic the functions of cell membranes and apply them in artificial systems.
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Affiliation(s)
| | - Roland Goers
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
- Department of Biosystems Science and Engineering
| | - Adrian Najer
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
| | - Xiaoyan Zhang
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
| | - Anja Car
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
| | - Wolfgang Meier
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
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21
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Küchler A, Adamcik J, Mezzenga R, Schlüter AD, Walde P. Enzyme immobilization on silicate glass through simple adsorption of dendronized polymer–enzyme conjugates for localized enzymatic cascade reactions. RSC Adv 2015. [DOI: 10.1039/c5ra06268c] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Conjugation of enzymes to a dendronized polymer via bis-aryl hydrazone bonds enables simple and stable enzyme immobilisation on unmodified glass.
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Affiliation(s)
- Andreas Küchler
- Laboratory of Polymer Chemistry
- Department of Materials
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - Jozef Adamcik
- Laboratory of Food & Soft Materials
- Institute of Food, Nutrition and Health
- Department of Health Sciences and Technology
- ETH Zürich
- 8092 Zürich
| | - Raffaele Mezzenga
- Laboratory of Food & Soft Materials
- Institute of Food, Nutrition and Health
- Department of Health Sciences and Technology
- ETH Zürich
- 8092 Zürich
| | - A. Dieter Schlüter
- Laboratory of Polymer Chemistry
- Department of Materials
- ETH Zürich
- 8093 Zürich
- Switzerland
| | - Peter Walde
- Laboratory of Polymer Chemistry
- Department of Materials
- ETH Zürich
- 8093 Zürich
- Switzerland
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