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Zabihzadeh Khajavi M, Nikiforov A, Nilkar M, Devlieghere F, Ragaert P, De Geyter N. Degradable Plasma-Polymerized Poly(Ethylene Glycol)-Like Coating as a Matrix for Food-Packaging Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2774. [PMID: 37887925 PMCID: PMC10609115 DOI: 10.3390/nano13202774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 10/28/2023]
Abstract
Currently, there is considerable interest in seeking an environmentally friendly technique that is neither thermally nor organic solvent-dependent for producing advanced polymer films for food-packaging applications. Among different approaches, plasma polymerization is a promising method that can deposit biodegradable coatings on top of polymer films. In this study, an atmospheric-pressure aerosol-assisted plasma deposition method was employed to develop a poly(ethylene glycol) (PEG)-like coating, which can act as a potential matrix for antimicrobial agents, by envisioning controlled-release food-packaging applications. Different plasma operating parameters, including the input power, monomer flow rate, and gap between the edge of the plasma head and substrate, were optimized to produce a PEG-like coating with a desirable water stability level and that can be biodegradable. The findings revealed that increased distance between the plasma head and substrate intensified gas-phase nucleation and diluted the active plasma species, which in turn led to the formation of a non-conformal rough coating. Conversely, at short plasma-substrate distances, smooth conformal coatings were obtained. Furthermore, at low input powers (<250 W), the chemical structure of the precursor was mostly preserved with a high retention of C-O functional groups due to limited monomer fragmentation. At the same time, these coatings exhibit low stability in water, which could be attributed to their low cross-linking degree. Increasing the power to 350 W resulted in the loss of the PEG-like chemical structure, which is due to the enhanced monomer fragmentation at high power. Nevertheless, owing to the enhanced cross-linking degree, these coatings were more stable in water. Finally, it could be concluded that a moderate input power (250-300 W) should be applied to obtain an acceptable tradeoff between the coating stability and PEG resemblance.
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Affiliation(s)
- Maryam Zabihzadeh Khajavi
- Research Unit Food Microbiology and Food Preservation, Department of Food Technology, Safety and Health, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (F.D.); (P.R.)
- Research Unit Plasma Technology, Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium; (A.N.); (M.N.); (N.D.G.)
| | - Anton Nikiforov
- Research Unit Plasma Technology, Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium; (A.N.); (M.N.); (N.D.G.)
| | - Maryam Nilkar
- Research Unit Plasma Technology, Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium; (A.N.); (M.N.); (N.D.G.)
| | - Frank Devlieghere
- Research Unit Food Microbiology and Food Preservation, Department of Food Technology, Safety and Health, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (F.D.); (P.R.)
| | - Peter Ragaert
- Research Unit Food Microbiology and Food Preservation, Department of Food Technology, Safety and Health, Ghent University, Coupure Links 653, 9000 Ghent, Belgium; (F.D.); (P.R.)
| | - Nathalie De Geyter
- Research Unit Plasma Technology, Department of Applied Physics, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium; (A.N.); (M.N.); (N.D.G.)
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2
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Mendrek B, Oleszko-Torbus N, Teper P, Kowalczuk A. Towards a modern generation of polymer surfaces: nano- and microlayers of star macromolecules and their design for applications in biology and medicine. Prog Polym Sci 2023. [DOI: 10.1016/j.progpolymsci.2023.101657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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3
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Sancho A, Taskin MB, Wistlich L, Stahlhut P, Wittmann K, Rossi A, Groll J. Cell Adhesion Assessment Reveals a Higher Force per Contact Area on Fibrous Structures Compared to Flat Substrates. ACS Biomater Sci Eng 2022; 8:649-658. [DOI: 10.1021/acsbiomaterials.1c01290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ana Sancho
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication (IFB) and Bavarian Polymer Institute (BPI), University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
- Department of Automatic Control and Systems Engineering, University of the Basque Country UPV/EHU, Plaza de Europa 1, 20018 Donostia, Spain
| | - Mehmet Berat Taskin
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication (IFB) and Bavarian Polymer Institute (BPI), University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Laura Wistlich
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication (IFB) and Bavarian Polymer Institute (BPI), University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Philipp Stahlhut
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication (IFB) and Bavarian Polymer Institute (BPI), University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Katharina Wittmann
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication (IFB) and Bavarian Polymer Institute (BPI), University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
| | - Angela Rossi
- Fraunhofer Institute for Silicate Research ISC, Translational Center Regenerative Therapies (TLC-RT), 97070 Würzburg, Germany
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry at the Institute of Functional Materials and Biofabrication (IFB) and Bavarian Polymer Institute (BPI), University of Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
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4
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Söder D, Garay-Sarmiento M, Rahimi K, Obstals F, Dedisch S, Haraszti T, Davari MD, Jakob F, Heß C, Schwaneberg U, Rodriguez-Emmenegger C. Unraveling the Mechanism and Kinetics of Binding of an LCI-eGFP-Polymer for Antifouling Coatings. Macromol Biosci 2021; 21:e2100158. [PMID: 34145970 DOI: 10.1002/mabi.202100158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 05/15/2021] [Indexed: 11/07/2022]
Abstract
The ability of proteins to adsorb irreversibly onto surfaces opens new possibilities to functionalize biological interfaces. Herein, the mechanism and kinetics of adsorption of protein-polymer macromolecules with the ability to equip surfaces with antifouling properties are investigated. These macromolecules consist of the liquid chromatography peak I peptide from which antifouling polymer brushes are grafted using single electron transfer-living radical polymerization. Surface plasmon resonance spectroscopy reveals an adsorption mechanism that follows a Langmuir-type of binding with a strong binding affinity to gold. X-ray reflectivity supports this by proving that the binding occurs exclusively by the peptide. However, the lateral organization at the surface is directed by the cylindrical eGFP. The antifouling functionality of the unimolecular coatings is confirmed by contact with blood plasma. All coatings reduce the fouling from blood plasma by 8894% with only minor effect of the degree of polymerization for the studied range (DP between 101 and 932). The excellent antifouling properties, combined with the ease of polymerization and the straightforward coating procedure make this a very promising antifouling concept for a multiplicity of applications.
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Affiliation(s)
- Dominik Söder
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52074, Aachen, Germany
| | - Manuela Garay-Sarmiento
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
| | - Khosrow Rahimi
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany
| | - Fabian Obstals
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, 52074, Aachen, Germany
| | - Sarah Dedisch
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
| | - Tamás Haraszti
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany
| | - Mehdi D Davari
- Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
| | - Felix Jakob
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
| | - Christoph Heß
- Faculty of Technology and Bionics, Rhine-Waal University of Applied Sciences, 47533, Kleve, Germany
| | - Ulrich Schwaneberg
- DWI - Leibniz Institute for Interactive Materials, 52074, Aachen, Germany.,Lehrstuhl für Biotechnologie, RWTH Aachen University, 52074, Aachen, Germany
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5
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Taskin MB, Tylek T, Blum C, Böhm C, Wiesbeck C, Groll J. Inducing Immunomodulatory Effects on Human Macrophages by Multifunctional NCO-sP(EO- stat-PO)/Gelatin Hydrogel Nanofibers. ACS Biomater Sci Eng 2021; 7:3166-3178. [PMID: 34114792 DOI: 10.1021/acsbiomaterials.1c00232] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Endowing materials and scaffolds with immunomodulatory properties has evolved into a very active field of research. However, combining such effects with multifunctionality regarding cell adhesion and manipulation is still challenging due to the intricate nature of cell-substrate interactions that require fine-tuning of scaffold properties. Here, we reported electrospinning of a well-known biopolymer, gelatin, together with six-arm star-shaped poly(ethylene oxide-stat-propylene oxide) prepolymer with isocyanate end groups (NCO-sP(EO-stat-PO)) as a reactive prepolymer cross-linker. Covalent coupling of two components during and after processing yielded a network of hydrogel fibers that was remarkably stable under aqueous and also proteolytic conditions without the need for extra cross-linking, with a significant increase in stability with increasing NCO-sP(EO-stat-PO) content. When seeded with human macrophages, cells adhered and spread on the fibers and were found highly viable after 7 days of culture across all scaffolds. Furthermore, hybrid fibrous meshes upregulated the expression of a prohealing gene, CD206, while downregulating proinflammatory genes, IL-1β and IL-8. Markedly, NCO-sP(EO-stat-PO)-rich samples induced a significantly reduced release of proinflammatory cytokines, IL-1β, IL-6, and IL-8. Finally, we successfully conjugated IL-4 to NCO-sP(EO-stat-PO) that effectively steered macrophages into a prohealing M2 type, demonstrating additional and robust control over the immunomodulatory feature of the scaffolds.
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Affiliation(s)
- Mehmet Berat Taskin
- Department of Functional Materials in Medicine and Dentistry at the Institute of Biofabrication and Functional Materials, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070 Würzburg, Germany
| | - Tina Tylek
- Department of Functional Materials in Medicine and Dentistry at the Institute of Biofabrication and Functional Materials, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070 Würzburg, Germany
| | - Carina Blum
- Department of Functional Materials in Medicine and Dentistry at the Institute of Biofabrication and Functional Materials, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070 Würzburg, Germany
| | - Christoph Böhm
- Department of Functional Materials in Medicine and Dentistry at the Institute of Biofabrication and Functional Materials, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070 Würzburg, Germany
| | - Christina Wiesbeck
- Department of Functional Materials in Medicine and Dentistry at the Institute of Biofabrication and Functional Materials, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070 Würzburg, Germany
| | - Jürgen Groll
- Department of Functional Materials in Medicine and Dentistry at the Institute of Biofabrication and Functional Materials, University of Würzburg and KeyLab Polymers for Medicine of the Bavarian Polymer Institute (BPI), Pleicherwall 2, 97070 Würzburg, Germany
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6
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Dopamine triggered one step polymerization and codeposition of reactive surfactant on PES membrane surface for antifouling modification. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117148] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Lim H, Park Y, Seo Y, Park H, Cho YK, Jung D. Surface modification of polystyrene Petri dishes by plasma polymerized 4,7,10-trioxa-1,13-tridecanediamine for enhanced culturing and migration of bovine aortic endothelial cells. BIOFOULING 2020; 36:816-824. [PMID: 32942906 DOI: 10.1080/08927014.2020.1821878] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/31/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
Plasma surface modification is an effective method for changing material properties to control cell behavior on a surface. This study investigates the efficiency of a plasma polymerized 4,7,10-trioxa-1,13-tridecanediamine (ppTTDDA) film coated on a polystyrene (PS) Petri dish, which is a biocompatible surface with carbon- and oxygen-based chemical species. The adhesion, proliferation, and migration properties of bovine aortic endothelial cells (BAECs) were profoundly enhanced in the ppTTDDA-coated PS Petri dishes without extracellular matrix (ECM) proteins, when compared with the uncoated PS Petri dishes. These observations indicate that ppTTDDA-coated PS Petri dishes can directly interact with cells, regardless of cell adhesion molecules. The increased cell affinity was attributed to the high concentration of carboxyl group on the surface of the ppTTDDA film. Such a carboxyl surface showed an excellent ability to promote culturing of BAECs. Plasma surface modification techniques are effective in improving biocompatibility and provide a surface environment for cell culture.
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Affiliation(s)
- Hyuna Lim
- Department of Physics, Institute of Basic Science, Brain Korea 21 Physics Research Division, Sungkyunkwan University, Suwon, South Korea
| | - Yoonsoo Park
- Department of Physics, Institute of Basic Science, Brain Korea 21 Physics Research Division, Sungkyunkwan University, Suwon, South Korea
| | - Youngsik Seo
- Department of Molecular Biology and Institute of Nanosensor and Biotechnology, Dankook University, Cheonan, South Korea
| | - Heonyong Park
- Department of Molecular Biology and Institute of Nanosensor and Biotechnology, Dankook University, Cheonan, South Korea
| | - Yong Ki Cho
- Heat Treatment R&D Group, Korea Institute of Industrial Technology, Incheon, South Korea
| | - Donggeun Jung
- Department of Physics, Institute of Basic Science, Brain Korea 21 Physics Research Division, Sungkyunkwan University, Suwon, South Korea
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8
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Mao J, Zhang B, Zhang H, Elupula R, Grayson SM, Wesdemiotis C. Elucidating Branching Topology and Branch Lengths in Star-Branched Polymers by Tandem Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:1981-1991. [PMID: 31363988 DOI: 10.1007/s13361-019-02260-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/21/2019] [Accepted: 05/26/2019] [Indexed: 06/10/2023]
Abstract
Tandem mass spectrometry (MS2) has been employed to elucidate the topology and branching architecture of star-branched polyethers. The polymers were ionized by matrix-assisted laser desorption/ionization (MALDI) to positive ions and dissociated after leaving the ion source via laser-induced fragmentation. The bond scissions caused under MALDI-MS2 conditions occur preferentially near the core-branch joining points due to energetically favorable homolytic and heterolytic bond cleavages near the core and release of steric strain and/or reduction of crowding. This unique fragmentation mode detaches complete arms from the core generating fragment ion series at the expected molecular weight of each branch. The number of fragment ion distributions observed combined with their mass-to-charge ratios permit conclusive determination of the degree of branching and the corresponding branch lengths, as demonstrated for differently branched homo- and mikto-arm polyether stars synthesized via azide-alkyne click chemistry. The results of this study underscore the utility of MS2 for the characterization of branching architecture and branch lengths of (co) polymers with two or more linear chains attached to a functionalized central core.
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Affiliation(s)
- Jialin Mao
- Department of Chemistry, Knight Chemical Laboratory, The University of Akron, Akron, OH, 44325-3601, USA
| | - Boyu Zhang
- Department of Chemistry, Tulane University, New Orleans, LA, 70118, USA
| | - Hong Zhang
- Department of Chemistry, Tulane University, New Orleans, LA, 70118, USA
| | - Ravinder Elupula
- Department of Chemistry, Tulane University, New Orleans, LA, 70118, USA
| | - Scott M Grayson
- Department of Chemistry, Tulane University, New Orleans, LA, 70118, USA
| | - Chrys Wesdemiotis
- Department of Chemistry, Knight Chemical Laboratory, The University of Akron, Akron, OH, 44325-3601, USA.
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9
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Liu Y, Nevanen TK, Paananen A, Kempe K, Wilson P, Johansson LS, Joensuu JJ, Linder MB, Haddleton DM, Milani R. Self-Assembling Protein-Polymer Bioconjugates for Surfaces with Antifouling Features and Low Nonspecific Binding. ACS APPLIED MATERIALS & INTERFACES 2019; 11:3599-3608. [PMID: 30566323 DOI: 10.1021/acsami.8b19968] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A new method is demonstrated for preparing antifouling and low nonspecific adsorption surfaces on poorly reactive hydrophobic substrates, without the need for energy-intensive or environmentally aggressive pretreatments. The surface-active protein hydrophobin was covalently modified with a controlled radical polymerization initiator and allowed to self-assemble as a monolayer on hydrophobic surfaces, followed by the preparation of antifouling surfaces by Cu(0)-mediated living radical polymerization of poly(ethylene glycol) methyl ether acrylate (PEGA) performed in situ. By taking advantage of hydrophobins to achieve at the same time the immobilization of protein A, this approach allowed to prepare surfaces for IgG1 binding featuring greatly reduced nonspecific adsorption. The success of the surface modification strategy was investigated by contact angle, XPS, and AFM characterization, while the antifouling performance and the reduction of nonspecific binding were confirmed by QCM-D measurements.
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Affiliation(s)
- Yingying Liu
- VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo , Finland
| | - Tarja K Nevanen
- VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo , Finland
| | - Arja Paananen
- VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo , Finland
| | - Kristian Kempe
- Department of Chemistry , University of Warwick , CV4 7AL Coventry , United Kingdom
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash Institute of Pharmaceutical Sciences , Monash University , VIC 3052 , Parkville , Australia
| | - Paul Wilson
- Department of Chemistry , University of Warwick , CV4 7AL Coventry , United Kingdom
| | | | - Jussi J Joensuu
- VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo , Finland
| | | | - David M Haddleton
- Department of Chemistry , University of Warwick , CV4 7AL Coventry , United Kingdom
| | - Roberto Milani
- VTT Technical Research Centre of Finland Ltd., P.O. Box 1000, FI-02044 Espoo , Finland
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10
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Wang C, Yan F, Meng X, Qiao Y, Qiu D. Regulating polymer adsorption on colloid by surface morphology. SOFT MATTER 2018; 14:9336-9342. [PMID: 30310912 DOI: 10.1039/c8sm01833b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The study of polymer adsorption on colloidal particles has attracted intensive attention. In this work, we investigated polymer adsorption on substrate colloidal particles with two complementary morphologies, one of which has bulges (raspberry-like) on the surface and the other of which has holes instead (strawberry-like). Compared to the bulges, the holes on the colloidal particles were found to prevent polymer adsorption and this effect was dependent on the relative dimensions of the polymer coil and hole. This surface morphology effect was attributed mainly to the reduced polymer accessibility to the adsorption sites in holes when the hydrodynamic size of the polymer coil is larger than the hole, due to the size limiting effect. When the hydrodynamic size of the polymer coil is smaller than that of the holes, no difference in polymer adsorption was observed between raspberry-like and strawberry-like colloids. This study provides a strategy for regulating polymer adsorption on colloidal particles by adjusting the fine structures on the surface, which may be advantageous when limited chemical compositions are allowed. For example, protein adsorption on colloidal drugs may be found to be significantly reduced when colloids with surface holes are used.
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Affiliation(s)
- Chao Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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11
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Islam MS, Hernández S, Wan H, Ormsbee L, Bhattacharyya D. Role of membrane pore polymerization conditions for pH responsive behavior, catalytic metal nanoparticle synthesis, and PCB degradation. J Memb Sci 2018; 555:348-361. [PMID: 30718939 PMCID: PMC6358284 DOI: 10.1016/j.memsci.2018.03.060] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This article describes the effects of changing monomer and cross-linker concentrations on the mass gain, water permeability, Pd-Fe nanoparticle (NP) loading, and the rate of degradation of 3,3',4,4',5-pentachlorobiphenyl (PCB 126) of pore functionalized polyvinylidene fluoride (PVDF) membranes. In this study, monomer (acrylic acid (AA)) and cross-linker (N, N'- methylene-bis (acrylamide)) concentrations were varied from 10 to 20 wt% of polymer solution and 0.5-2 mol% of monomer concentration, respectively. Results showed that responsive behavior of membrane could be tuned in terms of water permeability over a range of 270-1 L m-2 h-1 bar-1, which is a function of water pH. The NP size on the membrane surface was found in the range of 16-23 nm. With increasing cross-linker density the percentage of smaller NPs (< 10 nm) increases due to smaller mesh size formation during in-situ polymerization of membrane. NP loading was found to vary from 0.21 to 0.94 mg per cm2 of membrane area depending on the variation of available carboxyl groups in membrane pore domain. The NPs functionalized membranes were then tested for use as a platform for the degradation of PCB 126. The observed batch reaction rate (Kobs) for PCB 126 degradation for per mg of catalyst loading was found 0.08-0.1 h-1. Degradation study in convective flow mode shows 98.6% PCB 126 is degraded at a residence time of 46.2 s. The corresponding surface area normalized reaction rate (K sa ) is found about two times higher than K sa of batch degradation; suggesting elimination of the effect of diffusion resistance for degradation of PCB 126 in convective flow mode operation. These Pd-Fe-PAA-PVDF membranes and nanoparticles are characterized by TGA, contact angle measurement, surface zeta potential, XRD, SEM, XPS, FIB, TEM and other techniques reveal the details about the membrane surface, pores and nanoparticles size, shape and size-distribution. Statistical analysis based on experimental results allows us to depict responsive behavior of functionalized membrane. In our best knowledge this paper first time reports detail study on responsive behavior of pore functionalized membrane in terms of permeability, NPs size, metal loading and its effect on PCB 126 degradation in a quantified approach.
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Affiliation(s)
- Md. Saiful Islam
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F. Paul Anderson Tower Building, Lexington, KY 40506, USA
| | - Sebastián Hernández
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F. Paul Anderson Tower Building, Lexington, KY 40506, USA
| | - Hongyi Wan
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F. Paul Anderson Tower Building, Lexington, KY 40506, USA
| | - Lindell Ormsbee
- Department of Civil Engineering, University of Kentucky, Lexington, KY 40506, USA
| | - Dibakar Bhattacharyya
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F. Paul Anderson Tower Building, Lexington, KY 40506, USA
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12
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Groll JÜRGEN, Fiedler JÖRG, Bruellhoff K, Moeller M, Brenner RE. Novel Surface Coatings Modulating Eukaryotic Cell Adhesion and Preventing Implant Infection. Int J Artif Organs 2018; 32:655-62. [DOI: 10.1177/039139880903200915] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Poor osseointegration and bacterial infection are major causes of orthopedic implant failure. Both problems arise from passive unspecific protein coating that may not optimally support adhesion of osteoblastic cells and which enable bacterial adhesion that subsequently results in biofilm formation. This review addresses emerging concepts of preventing unspecific protein adsorption and biofilm formation by organic coating systems. We especially focus on recent concepts that additionally allow functionalization for preferential cell adhesion using cell adhesion mediating small peptide sequences that do not induce bacterial adherence. One promising approach that is presented and discussed within this context is the use of NCO-sP(EO-stat-PO).
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Affiliation(s)
- JÜRGEN Groll
- DWI e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Aachen - Germany
| | - JÖRG Fiedler
- Department of Orthopedics, Division for Biochemistry of Joint and Connective Tissue Diseases, University of Ulm, Ulm - Germany
| | - Kristina Bruellhoff
- DWI e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Aachen - Germany
| | - Martin Moeller
- DWI e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, Aachen - Germany
| | - Rolf E. Brenner
- Department of Orthopedics, Division for Biochemistry of Joint and Connective Tissue Diseases, University of Ulm, Ulm - Germany
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13
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Benetti EM, Divandari M, Ramakrishna SN, Morgese G, Yan W, Trachsel L. Loops and Cycles at Surfaces: The Unique Properties of Topological Polymer Brushes. Chemistry 2017; 23:12433-12442. [DOI: 10.1002/chem.201701940] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Edmondo M. Benetti
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
- Department of Materials Science and Technology of Polymers; MESA+ Institute for Nanotechnology; University of Twente, P.O. Box 217; 7500 AE Enschede The Netherlands
| | - Mohammad Divandari
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
| | | | - Giulia Morgese
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
| | - Wenqing Yan
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
| | - Lucca Trachsel
- Laboratory for Surface Science and Technology; ETH Zürich; Rämistrasse 101 8092 Zürich Switzerland
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14
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Hesse E, Freudenberg U, Niemietz T, Greth C, Weisser M, Hagmann S, Binner M, Werner C, Richter W. Peptide-functionalized starPEG/heparin hydrogels direct mitogenicity, cell morphology and cartilage matrix distribution in vitro and in vivo. J Tissue Eng Regen Med 2017; 12:229-239. [PMID: 28083992 DOI: 10.1002/term.2404] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 12/12/2016] [Accepted: 01/09/2017] [Indexed: 12/20/2022]
Abstract
Cell-based tissue engineering is a promising approach for treating cartilage lesions, but available strategies still provide a distinct composition of the extracellular matrix and an inferior mechanical property compared to native cartilage. To achieve fully functional tissue replacement more rationally designed biomaterials may be needed, introducing bioactive molecules which modulate cell behavior and guide tissue regeneration. This study aimed at exploring the impact of cell-instructive, adhesion-binding (GCWGGRGDSP called RGD) and collagen-binding (CKLER/CWYRGRL) peptides, incorporated in a tunable, matrixmetalloprotease (MMP)-responsive multi-arm poly(ethylene glycol) (starPEG)/heparin hydrogel on cartilage regeneration parameters in vitro and in vivo. MMP-responsive-starPEG-conjugates with cysteine termini and heparin-maleimide, optionally pre-functionalized with RGD, CKLER, CWYRGRL or control peptides, were cross-linked by Michael type addition to embed and grow mesenchymal stromal cells (MSC) or chondrocytes. While starPEG/heparin-hydrogel strongly supported chondrogenesis of MSC according to COL2A1, BGN and ACAN induction, MMP-degradability enhanced cell viability and proliferation. RGD-modification of the gels promoted cell spreading with intense cell network formation without negative effects on chondrogenesis. However, CKLER and CWYRGRL were unable to enhance the collagen content of constructs. RGD-modification allowed more even collagen type II distribution by chondrocytes throughout the MMP-responsive constructs, especially in vivo. Collectively, peptide-instruction via heparin-enriched MMP-degradable starPEG allowed adjustment of self-renewal, cell morphology and cartilage matrix distribution in order to guide MSC and chondrocyte-based cartilage regeneration towards an improved outcome. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Eliane Hesse
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital Heidelberg, Germany
| | - Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Centre of Biomaterials Dresden (MBC), Dresden University of Technology, Centre for Regenerative Therapies Dresden (CRTD), Germany
| | - Thomas Niemietz
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital Heidelberg, Germany
| | - Carina Greth
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital Heidelberg, Germany
| | - Melanie Weisser
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital Heidelberg, Germany
| | - Sébastien Hagmann
- Centre for Orthopaedic and Trauma Surgery, Orthopaedic University Hospital Heidelberg, Germany
| | - Marcus Binner
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Centre of Biomaterials Dresden (MBC), Dresden University of Technology, Centre for Regenerative Therapies Dresden (CRTD), Germany
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden (IPF), Max Bergmann Centre of Biomaterials Dresden (MBC), Dresden University of Technology, Centre for Regenerative Therapies Dresden (CRTD), Germany
| | - Wiltrud Richter
- Research Centre for Experimental Orthopaedics, Orthopaedic University Hospital Heidelberg, Germany
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15
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Wan H, Briot NJ, Saad A, Ormsbee L, Bhattacharyya D. Pore Functionalized PVDF Membranes with In-Situ Synthesized Metal Nanoparticles: Material Characterization, and Toxic Organic Degradation. J Memb Sci 2017; 530:147-157. [PMID: 29398774 PMCID: PMC5793928 DOI: 10.1016/j.memsci.2017.02.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Functionalized PVDF membrane platforms were developed for environmentally benign in-situ nanostructured Fe/Pd synthesis and remediation of chlorinated organic compounds. To prevent leaching and aggregation, nanoparticle catalysts were integrated into membrane domains functionalized with poly (acrylic acid). Nanoparticles of 16-19 nm were observed inside the membrane pores by using focused ion beam (FIB). This technique prevents mechanical deformation of the membrane, compared to the normal SEM preparation methods, thus providing a clean, smooth surface for nanoparticles characterization. This allowed quantification of nanoparticle properties (size and distribution) versus depth underneath the membrane surface (0-20 µm). The results showed that nanoparticles were uniformly sized and evenly distributed inside the membrane pores. However, the size of nanoparticles inside the membrane pores was 13.9% smaller than those nanoparticles located on the membrane surface. Investigating nanoparticles inside membrane pores increases the accuracy of kinetic analysis and modeling aspects. Furthermore, the Fe/Pd immobilized membranes showed excellent performance in the degradation of chlorinated organics: Over 96% degradation of 3,3',4,4',5-pentachlorobiphenyl (PCB 126) was achieved in less than 15 s residence time in convective flow mode. The regeneration and reuse of this catalytic membrane system were also studied. Particles were examined in XRD upon formation, after deliberate oxidation, and after regeneration. The regenerated sample showed the same crystalline pattern as the original sample. Repeated degradation experiments demonstrated successful PCB 126 dechlorination with nanoparticles regenerated for four cycles with only a small loss in reactivity. It demonstrated that Fe/Pd immobilized membranes have the potential for large-scale remediation applications.
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Affiliation(s)
- Hongyi Wan
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506-0046
| | - Nicolas J. Briot
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506-0046
| | - Anthony Saad
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506-0046
| | - Lindell Ormsbee
- Department of Civil Engineering, University of Kentucky, Lexington, Kentucky 40506-0046
| | - Dibakar Bhattacharyya
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506-0046
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16
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Jans A, Rosencrantz RR, Mandić AD, Anwar N, Boesveld S, Trautwein C, Moeller M, Sellge G, Elling L, Kuehne AJC. Glycan-Functionalized Microgels for Scavenging and Specific Binding of Lectins. Biomacromolecules 2017; 18:1460-1465. [PMID: 28257575 DOI: 10.1021/acs.biomac.6b01754] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Lectins are proteins with a well-defined carbohydrate recognition domain. Many microbial proteins such as bacterial toxins possess lectin or lectin-like binding domains to interact with cell membranes that are decorated with glycan recognition motifs. We report a straightforward way to prepare monodisperse and biocompatible polyethylene glycol microgels, which carry glycan motifs for specific binding to lectins. The sugar-functionalized colloids exhibit a wide mesh size and a highly accessible volume. The microgels are prepared via drop-based microfluidics combined with radical polymerization. GSII and ECL are used as model lectins that bind specifically to the corresponding carbohydrates, namely, GlcNAc and LacNAc. LacNAc microgels bind ECL with a high capacity and high affinity (Kd ≈ 0.5 to 1 μM), suggesting multivalent binding of the lectin to the LacNAc-decorated flexible microgel network. Glycan-functionalized microgels present a useful tool for lectin scavenging in biomedical applications.
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Affiliation(s)
- Alexander Jans
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University , Forckenbeckstraße 50, 52076 Aachen, Germany
| | - Ruben R Rosencrantz
- Laboratory for Biomaterials Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University , Pauwelsstr. 20, 52074 Aachen, Germany
| | - Ana D Mandić
- Department of Internal Medicine III, University Hospital, RWTH Aachen University , Pauwelsstr. 30, 52074 Aachen, Germany
| | - Naveed Anwar
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University , Forckenbeckstraße 50, 52076 Aachen, Germany
| | - Sarah Boesveld
- Department of Internal Medicine III, University Hospital, RWTH Aachen University , Pauwelsstr. 30, 52074 Aachen, Germany
| | - Christian Trautwein
- Department of Internal Medicine III, University Hospital, RWTH Aachen University , Pauwelsstr. 30, 52074 Aachen, Germany
| | - Martin Moeller
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University , Forckenbeckstraße 50, 52076 Aachen, Germany
| | - Gernot Sellge
- Department of Internal Medicine III, University Hospital, RWTH Aachen University , Pauwelsstr. 30, 52074 Aachen, Germany
| | - Lothar Elling
- Laboratory for Biomaterials Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University , Pauwelsstr. 20, 52074 Aachen, Germany
| | - Alexander J C Kuehne
- DWI - Leibniz Institute for Interactive Materials, RWTH Aachen University , Forckenbeckstraße 50, 52076 Aachen, Germany
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17
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Ieong NS, Biggs CI, Walker M, Gibson MI. Comparison of RAFT derived Poly(vinylpyrolidone) verses Poly(oligoethyleneglycol methacrylate) for the Stabilization of Glycosylated Gold Nanoparticles. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY 2017; 55:1200-1208. [PMID: 29225417 PMCID: PMC5718293 DOI: 10.1002/pola.28481] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Carbohydrates dictate many biological processes including infection by pathogens. Glycosylated polymers and nanomaterials which have increased affinity due to the cluster glycoside effect, are therefore useful tools to probe function, but also as prophylactic therapies or diagnostic tools. Here, the effect of polymer structure on the coating of gold nanoparticles is studied in the context of grafting density, buffer stability and in a lectin binding assay. RAFT polymerization is used to generate poly(oligoethyleneglycol methacrylates) and poly(N-vinyl pyrolidones) with a thiol end-group for subsequent immobilization onto the gold. It is observed that poly(oligoethylene glycol methacrylates), despite being widely used particle coatings, lead to low grafting densities which in turn resulted in lower stability in biological buffers. A depression of the cloud point upon nanoparticle immobilization is also seen, which might compromise performance. In comparison poly(vinyl pyrolidones) resulted in stable particles with higher grafting densities due to the compact size of each monomer unit. The higher grafting density also enabled an increase in the number of carbohydrates which can be installed per nanoparticle at the chain ends, and gave increased binding in a lectin recognition assay. These results will guide the development of new nanoparticle biosensors with enhanced specificity, affinity and stability.
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Affiliation(s)
- Nga Sze Ieong
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Caroline I. Biggs
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Mark Walker
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
| | - Matthew I. Gibson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
- Warwick Medical School, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
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18
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Nishiguchi A, Singh S, Wessling M, Kirkpatrick CJ, Möller M. Basement Membrane Mimics of Biofunctionalized Nanofibers for a Bipolar-Cultured Human Primary Alveolar-Capillary Barrier Model. Biomacromolecules 2017; 18:719-727. [PMID: 28100051 DOI: 10.1021/acs.biomac.6b01509] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In vitro reconstruction of an alveolar barrier for modeling normal lung functions and pathological events serve as reproducible, high-throughput pharmaceutical platforms for drug discovery, diagnosis, and regenerative medicine. Despite much effort, the reconstruction of organ-level alveolar barrier functions has failed due to the lack of structural similarity to the natural basement membrane, functionalization with specific ligands for alveolar cell function, the use of primary cells and biodegradability. Here we report a bipolar cultured alveolar-capillary barrier model of human primary cells supported by a basement membrane mimics of fully synthetic bifunctional nanofibers. One-step electrospinning process using a bioresorbable polyester and multifunctional star-shaped polyethylene glycols (sPEG) enables the fabrication of an ultrathin nanofiber mesh with interconnected pores. The nanofiber mesh possessed mechanical stability against cyclic expansion as seen in the lung in vivo. The sPEGs as an additive provide biofunctionality to fibers through the conjugation of peptide to the nanofibers and hydrophilization to prevent unspecific protein adsorption. Biofunctionalized nanofiber meshes facilitated bipolar cultivation of endothelial and epithelial cells with fundamental alveolar functionality and showed higher permeability for molecules compared to microporous films. This nanofiber mesh for a bipolar cultured barrier have the potential to promote growth of an organ-level barrier model for modeling pathological conditions and evaluating drug efficacy, environmental pollutants, and nanotoxicology.
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Affiliation(s)
- Akihiro Nishiguchi
- DWI - Leibniz-Institute for Interactive Materials , Forckenbeckstrasse 50, D-52056, Aachen, Germany
| | - Smriti Singh
- DWI - Leibniz-Institute for Interactive Materials , Forckenbeckstrasse 50, D-52056, Aachen, Germany
| | - Matthias Wessling
- DWI - Leibniz-Institute for Interactive Materials , Forckenbeckstrasse 50, D-52056, Aachen, Germany
| | - Charles J Kirkpatrick
- Institute of Pathology, University Medical Center, Johannes Gutenberg University , Langenbeckstrasse 1, D-55101, Mainz, Germany
| | - Martin Möller
- DWI - Leibniz-Institute for Interactive Materials , Forckenbeckstrasse 50, D-52056, Aachen, Germany.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University , Worringerweg 2, 52074, Aachen, Germany
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19
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Simsekyilmaz S, Liehn EA, Weinandy S, Schreiber F, Megens RTA, Theelen W, Smeets R, Jockenhövel S, Gries T, Möller M, Klee D, Weber C, Zernecke A. Targeting In-Stent-Stenosis with RGD- and CXCL1-Coated Mini-Stents in Mice. PLoS One 2016; 11:e0155829. [PMID: 27192172 PMCID: PMC4871500 DOI: 10.1371/journal.pone.0155829] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 05/04/2016] [Indexed: 11/19/2022] Open
Abstract
Atherosclerotic lesions that critically narrow the artery can necessitate an angioplasty and stent implantation. Long-term therapeutic effects, however, are limited by excessive arterial remodeling. We here employed a miniaturized nitinol-stent coated with star-shaped polyethylenglycole (star-PEG), and evaluated its bio-functionalization with RGD and CXCL1 for improving in-stent stenosis after implantation into carotid arteries of mice. Nitinol foils or stents (bare metal) were coated with star-PEG, and bio-functionalized with RGD, or RGD/CXCL1. Cell adhesion to star-PEG-coated nitinol foils was unaltered or reduced, whereas bio-functionalization with RGD but foremost RGD/CXCL1 increased adhesion of early angiogenic outgrowth cells (EOCs) and endothelial cells but not smooth muscle cells when compared with bare metal foils. Stimulation of cells with RGD/CXCL1 furthermore increased the proliferation of EOCs. In vivo, bio-functionalization with RGD/CXCL1 significantly reduced neointima formation and thrombus formation, and increased re-endothelialization in apoE-/- carotid arteries compared with bare-metal nitinol stents, star-PEG-coated stents, and stents bio-functionalized with RGD only. Bio-functionalization of star-PEG-coated nitinol-stents with RGD/CXCL1 reduced in-stent neointima formation. By supporting the adhesion and proliferation of endothelial progenitor cells, RGD/CXCL1 coating of stents may help to accelerate endothelial repair after stent implantation, and thus may harbor the potential to limit the complication of in-stent restenosis in clinical approaches.
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Affiliation(s)
- Sakine Simsekyilmaz
- Institute for Molecular Cardiovascular Research, University Hospital Aachen, RWTH Aachen University, Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
- Biochemistry Institute, Justus-Liebig-University, Giessen, Germany
| | - Elisa A. Liehn
- Institute for Molecular Cardiovascular Research, University Hospital Aachen, RWTH Aachen University, Aachen, Germany
- Human Genetic Laboratory, University of Medicine and Pharmacy, Craiova, Romania
- IZKF Aachen, University Hospital Aachen, RWTH Aachen University, Aachen, Germany
| | - Stefan Weinandy
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
- Department of Applied Medical Engineering, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
| | - Fabian Schreiber
- Institute for Textile Technology, RWTH Aachen University, Aachen, Germany
| | - Remco T. A. Megens
- Institute for Cardiovascular Prevention, Ludwig-Maximilians University Munich, Munich, Germany
| | - Wendy Theelen
- Institute for Molecular Cardiovascular Research, University Hospital Aachen, RWTH Aachen University, Aachen, Germany
| | - Ralf Smeets
- Department of Oral and Maxillofacial Surgery, Center of Clinical Neurosciences, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Stefan Jockenhövel
- Department of Applied Medical Engineering, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
| | - Thomas Gries
- Institute for Textile Technology, RWTH Aachen University, Aachen, Germany
| | - Martin Möller
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Doris Klee
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Christian Weber
- Institute for Cardiovascular Prevention, Ludwig-Maximilians University Munich, Munich, Germany
| | - Alma Zernecke
- Institute for Experimental Biomedicine, University Hospital Würzburg, Würzburg, Germany
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20
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Vieillard J, Hubert-Roux M, Brisset F, Soulignac C, Fioresi F, Mofaddel N, Morin-Grognet S, Afonso C, Le Derf F. Atmospheric Solid Analysis Probe-Ion Mobility Mass Spectrometry: An Original Approach to Characterize Grafting on Cyclic Olefin Copolymer Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:13138-13144. [PMID: 26556473 DOI: 10.1021/acs.langmuir.5b03494] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A cyclic olefin copolymer (COC) was grafted with aryl layers from aryldiazonium salts, and then we combined infrared spectrometry, atomic force microscopy (AFM), and ion mobility mass spectrometry with atmospheric solid analysis probe ionization (ASAP-IM-MS) to characterize the aryl layers. ASAP is a recent atmospheric ionization method dedicated to the direct analysis of solid samples. We demonstrated that ASAP-IM-MS is complementary to other techniques for characterizing bromine and sulfur derivatives of COC on surfaces. ASAP-IM-MS was useful for optimizing experimental grafting conditions and to elucidate hypotheses around aryl layer formation during the grafting process. Thus, ASAP-IM-MS is a good candidate tool to characterize covalent grafting on COC surfaces.
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Affiliation(s)
- Julien Vieillard
- Normandie Université, COBRA, UMR6014 and FR3038, Université de Rouen, INSA de Rouen, CNRS, 55, rue Saint Germain, 27000 Evreux, France
| | - Marie Hubert-Roux
- Normandie Université, COBRA, UMR6014 and FR3038, Université de Rouen, INSA de Rouen, CNRS, 55, rue Saint Germain, 27000 Evreux, France
| | - Florian Brisset
- Normandie Université, COBRA, UMR6014 and FR3038, Université de Rouen, INSA de Rouen, CNRS, 55, rue Saint Germain, 27000 Evreux, France
| | - Cecile Soulignac
- Normandie Université, COBRA, UMR6014 and FR3038, Université de Rouen, INSA de Rouen, CNRS, 55, rue Saint Germain, 27000 Evreux, France
| | - Flavia Fioresi
- Normandie Université, COBRA, UMR6014 and FR3038, Université de Rouen, INSA de Rouen, CNRS, 55, rue Saint Germain, 27000 Evreux, France
| | - Nadine Mofaddel
- Normandie Université, COBRA, UMR6014 and FR3038, Université de Rouen, INSA de Rouen, CNRS, 55, rue Saint Germain, 27000 Evreux, France
| | - Sandrine Morin-Grognet
- Normandie Université, EA3829 MERCI, Université de Rouen, 1 rue du 7ème chasseurs, BP281, 27002 Evreux Cedex, France
| | - Carlos Afonso
- Normandie Université, COBRA, UMR6014 and FR3038, Université de Rouen, INSA de Rouen, CNRS, 55, rue Saint Germain, 27000 Evreux, France
| | - Franck Le Derf
- Normandie Université, COBRA, UMR6014 and FR3038, Université de Rouen, INSA de Rouen, CNRS, 55, rue Saint Germain, 27000 Evreux, France
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21
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Zhang C, Chen L, Tan L, Zheng X, Wang Y. Poly(dopamine)-assisted preparation of star poly(ethylene glycol)-based coatings: A detailed study of their protein resistance and application in CE. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.05.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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23
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RAFT preparation and the aqueous self-assembly of amphiphilic poly(octadecyl acrylate)- block -poly(polyethylene glycol methyl ether acrylate) copolymers. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.01.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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24
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Hoenders D, Tigges T, Walther A. Combining the incompatible: Block copolymers consecutively displaying activated esters and amines and their use as protein-repellent surface modifiers with multivalent biorecognition. Polym Chem 2015. [DOI: 10.1039/c4py00928b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present the facile synthesis and orthogonal functionalization of diblock copolymers consisting of two incompatible segments, i.e. primary amines and activated esters, and demonstrate their use as protein-repellent brush layers with multivalent biorecognition.
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Affiliation(s)
- Daniel Hoenders
- DWI – Leibniz-Institute for Interactive Materials
- 52074 Aachen
- Germany
| | - Thomas Tigges
- DWI – Leibniz-Institute for Interactive Materials
- 52074 Aachen
- Germany
| | - Andreas Walther
- DWI – Leibniz-Institute for Interactive Materials
- 52074 Aachen
- Germany
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25
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Zhang C, Liu S, Tan L, Zhu H, Wang Y. Star-shaped poly(2-methyl-2-oxazoline)-based films: rapid preparation and effects of polymer architecture on antifouling properties. J Mater Chem B 2015; 3:5615-5628. [DOI: 10.1039/c5tb00732a] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Star-shaped poly(2-methyl-2-oxazoline)-based films prepared through polydopamine-assistance provided enhanced antifouling properties than the linear ones, and showed superior stability than PEG films.
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Affiliation(s)
- Chong Zhang
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Songtao Liu
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Lin Tan
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Haikun Zhu
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
- P. R. China
| | - Yanmei Wang
- CAS Key Laboratory of Soft Matter Chemistry
- Department of Polymer Science and Engineering
- University of Science and Technology of China
- Hefei 230026
- P. R. China
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26
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Kasten A, Naser T, Brüllhoff K, Fiedler J, Müller P, Möller M, Rychly J, Groll J, Brenner RE. Guidance of mesenchymal stem cells on fibronectin structured hydrogel films. PLoS One 2014; 9:e109411. [PMID: 25329487 PMCID: PMC4198140 DOI: 10.1371/journal.pone.0109411] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/29/2014] [Indexed: 12/21/2022] Open
Abstract
Designing of implant surfaces using a suitable ligand for cell adhesion to stimulate specific biological responses of stem cells will boost the application of regenerative implants. For example, materials that facilitate rapid and guided migration of stem cells would promote tissue regeneration. When seeded on fibronectin (FN) that was homogeneously immmobilized to NCO-sP(EO-stat-PO), which otherwise prevents protein binding and cell adhesion, human mesenchymal stem cells (MSC) revealed a faster migration, increased spreading and a more rapid organization of different cellular components for cell adhesion on fibronectin than on a glass surface. To further explore, how a structural organization of FN controls the behavior of MSC, adhesive lines of FN with varying width between 10 µm and 80 µm and spacings between 5 µm and 20 µm that did not allow cell adhesion were generated. In dependance on both line width and gaps, cells formed adjacent cell contacts, were individually organized in lines, or bridged the lines. With decreasing sizes of FN lines, speed and directionality of cell migration increased, which correlated with organization of the actin cytoskeleton, size and shape of the nuclei as well as of focal adhesions. Together, defined FN lines and gaps enabled a fine tuning of the structural organization of cellular components and migration. Microstructured adhesive substrates can mimic the extracellular matrix in vivo and stimulate cellular mechanisms which play a role in tissue regeneration.
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Affiliation(s)
- Annika Kasten
- Laboratory of Cell Biology, Rostock University Medical Center, Rostock, Germany
| | - Tamara Naser
- Division for Biochemistry of Joint and Connective Tissue Diseases of the Orthopedic Department, University of Ulm, Ulm, Germany
| | - Kristina Brüllhoff
- DWI Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Jörg Fiedler
- Division for Biochemistry of Joint and Connective Tissue Diseases of the Orthopedic Department, University of Ulm, Ulm, Germany
| | - Petra Müller
- Laboratory of Cell Biology, Rostock University Medical Center, Rostock, Germany
| | - Martin Möller
- DWI Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Joachim Rychly
- Laboratory of Cell Biology, Rostock University Medical Center, Rostock, Germany
- * E-mail:
| | - Jürgen Groll
- DWI Leibniz Institute for Interactive Materials and Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
- Department and Chair of Functional Materials in Medicine and Dentistry, University of Würzburg, Würzburg, Germany
| | - Rolf E. Brenner
- Division for Biochemistry of Joint and Connective Tissue Diseases of the Orthopedic Department, University of Ulm, Ulm, Germany
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27
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Zhang B, Zhang H, Elupula R, Alb AM, Grayson SM. Efficient Synthesis of High Purity Homo-arm and Mikto-arm Poly(ethylene glycol) Stars Using Epoxide and Azide-Alkyne Coupling Chemistry. Macromol Rapid Commun 2013; 35:146-151. [DOI: 10.1002/marc.201300623] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 09/19/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Boyu Zhang
- Department of Chemistry; Tulane University; New Orleans LA 70118 USA
| | - Hong Zhang
- Department of Chemistry; Tulane University; New Orleans LA 70118 USA
| | - Ravinder Elupula
- Department of Chemistry; Tulane University; New Orleans LA 70118 USA
| | - Alina M. Alb
- Department of Physics; Tulane University; New Orleans LA 70118 USA
| | - Scott M. Grayson
- Department of Chemistry; Tulane University; New Orleans LA 70118 USA
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Niepel MS, Fuhrmann B, Leipner HS, Groth T. Nanoscaled surface patterns influence adhesion and growth of human dermal fibroblasts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:13278-13290. [PMID: 24090166 DOI: 10.1021/la402705r] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In general, there is a need for passivation of nanopatterned biomaterial surfaces if cells are intended to interact only with a feature of interest. For this reason self-assembled monolayers (SAM), varying in chain length, are used; they are highly effective in preventing protein adsorption or cell adhesion. In addition, a simple and cost-effective technique to design nanopatterns of various sizes and distances, the so-called nanosphere lithography (NSL), is discussed, which allows the control of cell adhesion and growth depending on the feature dimensions. Combining both techniques results in highly selective nanostructured surfaces, showing that single proteins selectively adsorb on activated nanopatterns. Additionally, adhesion and growth of normal human dermal fibroblasts (NHDF) is strongly affected by the nanostructure dimensions, and it is proven that fibronectin (FN) matrix formation of these cells is influenced, too. Moreover, the FN fibrils are linked to the hexagonally close-packed nanopatterns. As a result, the system presented here can be applied in tissue engineering and implant design due to the fact that the nanopattern dimensions give rise to further modifications and allow the introduction of chemical heterogeneity to guide stem cell differentiation in the future.
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Affiliation(s)
- Marcus S Niepel
- Institute of Pharmacy, Biomedical Materials Group, and ‡Center of Materials Science, Martin Luther University Halle-Wittenberg , D-06099 Halle (Saale), Germany
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Petersen S, Strohbach A, Busch R, Felix SB, Schmitz KP, Sternberg K. Site-selective immobilization of anti-CD34 antibodies to poly(l-lactide) for endovascular implant surfaces. J Biomed Mater Res B Appl Biomater 2013; 102:345-55. [DOI: 10.1002/jbm.b.33012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 06/25/2013] [Accepted: 07/27/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Svea Petersen
- Institute for Biomedical Engineering; University of Rostock; Rostock 18119 Germany
| | - Anne Strohbach
- Clinic for Internal Medicine B; Forschungscluster III, University Medicine Greifswald; Greifswald 17475 Germany
| | - Raila Busch
- Clinic for Internal Medicine B; Forschungscluster III, University Medicine Greifswald; Greifswald 17475 Germany
| | - Stephan B. Felix
- Clinic for Internal Medicine B; Forschungscluster III, University Medicine Greifswald; Greifswald 17475 Germany
| | - Klaus-Peter Schmitz
- Institute for Biomedical Engineering; University of Rostock; Rostock 18119 Germany
| | - Katrin Sternberg
- Institute for Biomedical Engineering; University of Rostock; Rostock 18119 Germany
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30
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Mizrahi B, Khoo X, Chaing HH, Sher KJ, Feldman RG, Lee JJ, Irusta S, Kohane DS. Long-lasting antifouling coating from multi-armed polymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:10087-94. [PMID: 23855875 PMCID: PMC3775852 DOI: 10.1021/la4014575] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We describe a new antifouling surface coating, based on aggregation of a short amphiphilic four-armed PEG-dopamine polymer into particles and on surface binding by catechol chemistry. An unbroken and smooth polymeric coating layer with an average thickness of approximately 4 μm was formed on top of titanium oxide surfaces by a single step reaction. Coatings conferred excellent resistance to protein adhesion. Cell attachment was completely prevented for at least eight weeks, although the membranes themselves did not appear to be intrinsically cytotoxic. When linear PEG or four-armed PEG of higher molecular weight were used, the resulting coatings were inferior in thickness and in preventing protein adhesion. This coating method has potential applicability for biomedical devices susceptible to fouling after implantation.
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Affiliation(s)
- Boaz Mizrahi
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital, Harvard Medical School, 300 Longwood Ave., Boston, MA, 02115, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Xiaojuan Khoo
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital, Harvard Medical School, 300 Longwood Ave., Boston, MA, 02115, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Homer H. Chaing
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital, Harvard Medical School, 300 Longwood Ave., Boston, MA, 02115, USA
| | - Katalina J. Sher
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Rose G. Feldman
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Jung-Jae Lee
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital, Harvard Medical School, 300 Longwood Ave., Boston, MA, 02115, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Silvia Irusta
- Institute of Nanoscience of Aragón, University of Zaragoza, Mariano Esquillor s/n, Zaragoza, 50018, Spain
| | - Daniel S. Kohane
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital, Harvard Medical School, 300 Longwood Ave., Boston, MA, 02115, USA
- Corresponding author. Tel.: 1 617 355 7327; fax: .1 617 730 0453.
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31
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Rasi Ghaemi S, Harding F, Delalat B, Vasani R, Voelcker NH. Surface Engineering for Long-Term Culturing of Mesenchymal Stem Cell Microarrays. Biomacromolecules 2013; 14:2675-83. [DOI: 10.1021/bm400531n] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Soraya Rasi Ghaemi
- Mawson Institute, University of South Australia, GPO Box 2471, SA 5095, Australia
| | - Frances Harding
- Mawson Institute, University of South Australia, GPO Box 2471, SA 5095, Australia
| | - Bahman Delalat
- Mawson Institute, University of South Australia, GPO Box 2471, SA 5095, Australia
| | - Roshan Vasani
- Mawson Institute, University of South Australia, GPO Box 2471, SA 5095, Australia
| | - Nicolas H. Voelcker
- Mawson Institute, University of South Australia, GPO Box 2471, SA 5095, Australia
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32
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Wrzeszcz A, Dittrich B, Haamann D, Aliuos P, Klee D, Nolte I, Lenarz T, Reuter G. Dexamethasone released from cochlear implant coatings combined with a protein repellent hydrogel layer inhibits fibroblast proliferation. J Biomed Mater Res A 2013; 102:442-54. [PMID: 23533184 DOI: 10.1002/jbm.a.34719] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 01/15/2013] [Accepted: 02/11/2013] [Indexed: 12/20/2022]
Abstract
The insertion of cochlear implants into the inner ear often causes inflammation and fibrosis inside the scala tympani and thus growth of fibrous tissue on the implant surface. This deposition leads to the loss of function in both electrical and laser-based implants. The design of this study was to realize fibroblast growth inhibition by dexamethasone (Dex) released from the base material of the implant [polydimethylsiloxane (PDMS)]. To prevent cell and protein adhesion, the PDMS was coated with a hydrogel layer [star-shaped polyethylene glycol prepolymer (sPEG)]. Drug release rates were studied over 3 months, and surface characterization was performed. It was observed that the hydrogel slightly smoothened the surface roughened by the Dex crystals. The hydrogel coating reduced and prolonged the release of the drug over several months. Unmodified, sPEG-coated, Dex-loaded, and Dex/sPEG-equipped PDMS filaments were cocultivated in vitro with fluorescent fibroblasts, analyzed by fluorescent microscopy, and quantified by cell counting. Compared to the unmodified PDMS, cell growth on all modified filaments was averagely 95% ±standard deviation (SD) less, while cell growth on the bottom of the culture dishes containing Dex-loaded filaments was reduced by 70% ±SD. Both, Dex and sPEG prevented direct cell growth on the filament surfaces, while drug delivery was maintained for the duration of several months.
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Affiliation(s)
- Antonina Wrzeszcz
- Department of Otolaryngology, Hannover Medical School, 30625, Hannover, Germany
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33
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Donahoe CD, Cohen TL, Li W, Nguyen PK, Fortner JD, Mitra RD, Elbert DL. Ultralow protein adsorbing coatings from clickable PEG nanogel solutions: benefits of attachment under salt-induced phase separation conditions and comparison with PEG/albumin nanogel coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4128-39. [PMID: 23441808 PMCID: PMC3618222 DOI: 10.1021/la3051115] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Clickable nanogel solutions were synthesized by using the copper catalyzed azide/alkyne cycloaddition (CuAAC) to partially polymerize solutions of azide and alkyne functionalized poly(ethylene glycol) (PEG) monomers. Coatings were fabricated using a second click reaction: a UV thiol-yne attachment of the nanogel solutions to mercaptosilanated glass. Because the CuAAC reaction was effectively halted by the addition of a copper-chelator, we were able to prevent bulk gelation and limit the coating thickness to a single monolayer of nanogels in the absence of the solution reaction. This enabled the inclusion of kosmotropic salts, which caused the PEG to phase-separate and nearly double the nanogel packing density, as confirmed by quartz crystal microbalance with dissipation (QCM-D). Protein adsorption was analyzed by single molecule counting with total internal reflection fluorescence (TIRF) microscopy and cell adhesion assays. Coatings formed from the phase-separated clickable nanogel solutions attached with salt adsorbed significantly less fibrinogen than other 100% PEG coatings tested, as well as poly(L-lysine)-g-PEG (PLL-g-PEG) coatings. However, PEG/albumin nanogel coatings still outperformed the best 100% PEG clickable nanogel coatings. Additional surface cross-linking of the clickable nanogel coating in the presence of copper further reduced levels of fibrinogen adsorption closer to those of PEG/albumin nanogel coatings. However, this step negatively impacted long-term resistance to cell adhesion and dramatically altered the morphology of the coating by atomic force microscopy (AFM). The main benefit of the click strategy is that the partially polymerized solutions are stable almost indefinitely, allowing attachment in the phase-separated state without danger of bulk gelation, and thus producing the best performing 100% PEG coating that we have studied to date.
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Affiliation(s)
- Casey D. Donahoe
- Department of Biomedical Engineering, Washington University in St. Louis, Campus Box 1097, 1 Brookings Drive, St. Louis, MO 63130, United States
| | - Thomas L. Cohen
- Department of Genetics, Washington University in St. Louis, Campus Box 8510, 4444 Forest Park Boulevard, St. Louis, MO 63108, United States
| | - Wenlu Li
- Department of Energy, Environmental, & Chemical Engineering, Washington University in St. Louis, 1 Brookings Drive, St. Louis, MO 63130, United States
| | - Peter K. Nguyen
- Department of Biomedical Engineering, Washington University in St. Louis, Campus Box 1097, 1 Brookings Drive, St. Louis, MO 63130, United States
| | - John D. Fortner
- Department of Energy, Environmental, & Chemical Engineering, Washington University in St. Louis, 1 Brookings Drive, St. Louis, MO 63130, United States
| | - Robi D. Mitra
- Department of Biomedical Engineering, Washington University in St. Louis, Campus Box 1097, 1 Brookings Drive, St. Louis, MO 63130, United States
- Department of Genetics, Washington University in St. Louis, Campus Box 8510, 4444 Forest Park Boulevard, St. Louis, MO 63108, United States
| | - Donald L. Elbert
- Department of Biomedical Engineering, Washington University in St. Louis, Campus Box 1097, 1 Brookings Drive, St. Louis, MO 63130, United States
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Marel AK, Rappl S, Piera Alberola A, Rädler JO. Arraying cell cultures using PEG-DMA micromolding in standard culture dishes. Macromol Biosci 2013; 13:595-602. [PMID: 23460347 DOI: 10.1002/mabi.201200400] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 01/18/2013] [Indexed: 01/13/2023]
Abstract
A robust and effortless procedure is presented, which allows for the microstructuring of standard cell culture dishes. Cell adhesion and proliferation are controlled by three-dimensional poly(ethylene glycol)-dimethacrylate (PEG-DMA) microstructures. The spacing between microwells can be extended to millimeter size in order to enable the combination with robotic workstations. Cell arrays of microcolonies can be studied under boundary-free growth conditions by lift-off of the PEG-DMA layer in which the growth rate is accessible via the evolution of patch areas. Alternatively, PEG-DMA stencils can be used as templates for plasma-induced patterning.
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Affiliation(s)
- Anna-Kristina Marel
- Fakultät für Physik, Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, 80539 München, Germany
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35
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Kim DG, Kang H, Choi YS, Han S, Lee JC. Photo-cross-linkable star-shaped polymers with poly(ethylene glycol) and renewable cardanol side groups: synthesis, characterization, and application to antifouling coatings for filtration membranes. Polym Chem 2013. [DOI: 10.1039/c3py00756a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Strehmel C, Zhang Z, Strehmel N, Lensen MC. Cell phenotypic changes of mouse connective tissue fibroblasts (L-929) to poly(ethylene glycol)-based gels. Biomater Sci 2013; 1:850-859. [DOI: 10.1039/c3bm60055f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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37
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Natte K, Friedrich JF, Wohlrab S, Lutzki J, von Klitzing R, Österle W, Orts-Gil G. Impact of polymer shell on the formation and time evolution of nanoparticle-protein corona. Colloids Surf B Biointerfaces 2012; 104:213-20. [PMID: 23318220 DOI: 10.1016/j.colsurfb.2012.11.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 11/19/2012] [Accepted: 11/20/2012] [Indexed: 10/27/2022]
Abstract
The study of protein corona formation on nanoparticles (NPs) represents an actual main issue in colloidal, biomedical and toxicological sciences. However, little is known about the influence of polymer shells on the formation and time evolution of protein corona onto functionalized NPs. Therefore, silica-poly(ethylene glycol) core-shell nanohybrids (SNPs@PEG) with different polymer molecular weights (MW) were synthesized and exhaustively characterized. Bovine serum albumin (BSA) at different concentrations (0.1-6 wt%) was used as model protein to study protein corona formation and time evolution. For pristine SNPs and SNPs@PEG (MW=350 g/mol), zeta potential at different incubation times show a dynamical evolution of the nanoparticle-protein corona. Oppositely, for SNPs@PEG with MW≥2000 g/mol a significant suppression of corona formation and time evolution was observed. Furthermore, AFM investigations suggest a different orientation (side-chain or perpendicular) and penetration depth of BSA toward PEGylated surfaces depending on the polymer length which may explain differences in protein corona evolution.
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Affiliation(s)
- Kishore Natte
- BAM Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205 Berlin, Germany
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38
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Shen L, Garland A, Wang Y, Li Z, Bielawski CW, Guo A, Zhu XY. Two dimensional nanoarrays of individual protein molecules. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:3169-3174. [PMID: 22807323 DOI: 10.1002/smll.201200673] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 06/04/2012] [Indexed: 06/01/2023]
Abstract
Protein molecules on solid surfaces are essential to a number of applications, such as biosensors, biomaterials, and drug delivery. In most approaches for protein immobilization, inter-molecular distances on the solid surface are not controlled and this may lead to aggregation and crowding. Here, a simple approach to immobilize individual protein molecules in a well-ordered 2D array is shown, using nanopatterns obtained from a polystyrene-block-poly(2-hydroxyethyl methacrylate) (PS-b-PHEMA) diblock copolymer thin film. This water-stable and protein-resistant polymer film contains hexagonally ordered PS cylindrical domains in a PHEMA matrix. The PS domains are activated by incorporating alkyne-functionalized PS and immobilizing azide-tagged proteins specifically onto each PS domain using "Click" chemistry. The nanometer size of the PS domain dictates that each domain can accommodate no more than one protein molecule, as verified by atomic force microscopy imaging. Immunoassay shows that the amount of specifically bound antibody scales with the number density of individual protein molecules on the 2D nanoarrays.
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Affiliation(s)
- Lei Shen
- Department of Chemistry and Biochemistry, The University of Texas at Austin, Texas 78712, USA
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Zheng J, Xie H, Yu W, Tan M, Gong F, Liu X, Wang F, Lv G, Liu W, Zheng G, Yang Y, Xie W, Ma X. Enhancement of surface graft density of MPEG on alginate/chitosan hydrogel microcapsules for protein repellency. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:13261-13273. [PMID: 22921144 DOI: 10.1021/la302615t] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Alginate/chitosan/alginate (ACA) hydrogel microcapsules were modified with methoxy poly(ethylene glycol) (MPEG) to improve protein repellency and biocompatibility. Increased MPEG surface graft density (n(S)) on hydrogel microcapsules was achieved by controlling the grafting parameters including the buffer layer substrate, membrane thickness, and grafting method. X-ray photoelectron spectroscopy (XPS) model was employed to quantitatively analyze n(S) on this three-dimensional (3D) hydrogel network structure. Our results indicated that neutralizing with alginate, increasing membrane thickness, and in situ covalent grafting could increase n(S) effectively. ACAC(PEG) was more promising than ACC(PEG) in protein repellency because alginate supplied more -COO(-) negative binding sites and prevented MPEG from diffusing. The n(S) increased with membrane thickness, showing better protein repellency. Moreover, the in situ covalent grafting provided an effective way to enhance n(S), and 1.00 ± 0.03 chains/nm(2) was achieved, exhibiting almost complete immunity to protein adsorption. This antifouling hydrogel biomaterial is expected to be useful in transplantation in vivo.
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Affiliation(s)
- Jiani Zheng
- Laboratory of Biomedical Material Engineering, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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Gu W, Ma Y, Zhu C, Chen B, Ma J, Gao H. Synthesis of cross-linked carboxyl poly(glycerol methacrylate) and its application for the controlled release of doxorubicin. Eur J Pharm Sci 2012; 47:556-63. [PMID: 22884627 DOI: 10.1016/j.ejps.2012.07.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2012] [Revised: 07/07/2012] [Accepted: 07/09/2012] [Indexed: 01/21/2023]
Abstract
A series of polymers were synthesized by cross-linking carboxyl poly(glycerol methacrylate) (PGOHMA) using hexamethylene diisocyanate (HDI). The structures and molecular weight were characterized by ¹H NMR and gel permeation chromatography (GPC). Nanoparticles were then fabricated for encapsulation of doxorubicin hydrochloride (DOX). The encapsulation and release were affected by the chemical structure and degree of cross-linking of the polymers. The polymers were quite effective in the encapsulation of DOX, and exhibited pH-dependent drug release. Specifically, the stability of nanoparticles in neutral pH was significant enhanced and the release rate was enhanced at acidic pH after cross-linking, which could be potential useful as a controlled drug release carrier, especially for anti-cancer drug.
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Affiliation(s)
- Wenxing Gu
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China
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41
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Hoffmann J, Groll J, Heuts J, Rong H, Klee D, Ziemer G, Moeller M, Wendel HP. Blood cell and plasma protein repellent properties of Star-PEG-modified surfaces. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 17:985-96. [PMID: 17094637 DOI: 10.1163/156856206778366059] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The implantation of biomaterials, medical devices or prostheses can instigate a rejection response or initiate an undesirable adsorption of plasma proteins, as well as blood cells on the implant surface, thus triggering diverse defense mechanisms against the supposed pathologic invader. The extent of this inflammatory reaction depends in part on the biocompatibility of the used materials or coatings. Although adsorption and coagulation responses can appear during the total in vivo lifetime of the implant, they are initially and crucially formed within the first 2-4 weeks of implantation. This early phase is of decisive importance for the consecutive in-growth and healing process. The present study was intended to elucidate the effects of blood contact to surfaces modified with reactive six-arm star-shaped poly(ethylene glycol-stat-propylene glycol) pre-polymers (Star PEG). Taken together, for Star-PEG-covered substrates we could demonstrate a profound reduction of various blood-biomaterial interactions compared to non-coated substrates, indicating the promising potential of this material as future coating for biomaterials with blood contact.
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Affiliation(s)
- Jan Hoffmann
- Department of Thoracic, Cardiac and Vascular Surgery, University of Tübingen, Calwerstr 7/1, D-72076 Tübingen, Germany
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Surface-modified silicone foils for intraocular implantation. Graefes Arch Clin Exp Ophthalmol 2012; 250:823-7. [PMID: 22354368 DOI: 10.1007/s00417-012-1956-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 01/18/2012] [Accepted: 01/30/2012] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND Implantation of silicone materials like iris diaphragms into the eye can be complicated by cell migration and attachment. We studied polydimethylsiloxane (PDMS) foils coated with isocyanate terminated, star-shaped poly(ethylene glycol-stat-propylene glycol) (NCO-sP(EO-stat-PO)) equipped with heparin towards the inhibition of cell attachment without influencing cell viability. METHODS Mouse fibroblasts L929 were cultured and seeded onto sterilized pieces of either uncoated NCO-sP(EO-stat-PO) or heparin-NCO-sP(EO-stat-PO) loaded foils. Polyvinylchloride (PVC) foils served as the positive control and biomembranes as the negative control. The cultured cells were examined after 24 h for cell viability and adhesion by fluorescence microscopy; morphological cell changes were documented after hemalaun staining. Cell density was measured and quantification of cell proliferation was assessed by a BrdU test; quantification of cell activity was analyzed by a WST-1 test. RESULTS The fibroblasts' cell viability was excellent on all tested foils except the toxic PVC foil. NCO-sP(EO-stat-PO) coating provided significantly reduced cell activity. On heparin-loaded coatings, cells were viable and less dense but showed almost the same cell proliferation and cell activity as on the negative control. NCO-sP(EO-stat-PO) coated, heparin loaded foils proved high biocompatibility and reduced cell adhesion. CONCLUSIONS Both NCO-sP(EO-stat-PO)-coated foils with and without heparin seemed to be a viable implantation material for less cell migration, attachment, and reduced implant complications. Conclusive we give a recommendation for further studies on the intraocular implantation in particular for the NCO-sP(EO-stat-PO)-coated foils.
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43
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Haamann D, Bispinghoff M, Hönders D, Suschek C, Möller M, Klee D. Electrospun fibers from functional polyglycidol/poly(ε-caprolactone) blends with defined surface properties. J Appl Polym Sci 2012. [DOI: 10.1002/app.36472] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Fristrup CJ, Jankova K, Eskimergen R, Bukrinsky JT, Hvilsted S. Protein repellent hydrophilic grafts prepared by surface-initiated atom transfer radical polymerization from polypropylene. Polym Chem 2012. [DOI: 10.1039/c1py00347j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cross-linked hydrophilic poly(PEGMA) grafts (red) on PP repel fluorescence labelled insulin (green) when the PP plate is pulled out of the protein solution.
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Affiliation(s)
- Charlotte Juel Fristrup
- Danish Polymer Centre
- Department of Chemical and Biochemical Engineering
- Technical University of Denmark
- Kgs. Lyngby
- Denmark
| | - Katja Jankova
- Danish Polymer Centre
- Department of Chemical and Biochemical Engineering
- Technical University of Denmark
- Kgs. Lyngby
- Denmark
| | | | | | - Søren Hvilsted
- Danish Polymer Centre
- Department of Chemical and Biochemical Engineering
- Technical University of Denmark
- Kgs. Lyngby
- Denmark
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45
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Fang Y, Xu W, Wu J, Xu ZK. Enzymatic transglycosylation of PEG brushes by β-galactosidase. Chem Commun (Camb) 2012; 48:11208-10. [DOI: 10.1039/c2cc35369e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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46
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Lin FS, Chien CT, Chiu WC, Lin SY, Tseng FG, Hwu Y, Yang CS. Chemical auxiliary-free polymerization yielding non-linear PEG for protein-resistant application. RSC Adv 2012. [DOI: 10.1039/c2ra20117h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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47
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Li H, Li Z, Wu L, Liu F, Zhou J, Luan M, Yu M, Wei L. Water-soluble starlike poly(acrylic acid) graft polymer: preparation and application as templates for silver nanoclusters. Polym Bull (Berl) 2011. [DOI: 10.1007/s00289-011-0677-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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48
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Gillich T, Benetti EM, Rakhmatullina E, Konradi R, Li W, Zhang A, Schlüter AD, Textor M. Self-Assembly of Focal Point Oligo-catechol Ethylene Glycol Dendrons on Titanium Oxide Surfaces: Adsorption Kinetics, Surface Characterization, and Nonfouling Properties. J Am Chem Soc 2011; 133:10940-50. [DOI: 10.1021/ja202760x] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Torben Gillich
- Laboratory for Surface Science and Technology, and ‡Institute of Polymers, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Edmondo M. Benetti
- Laboratory for Surface Science and Technology, and ‡Institute of Polymers, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Ekaterina Rakhmatullina
- Laboratory for Surface Science and Technology, and ‡Institute of Polymers, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Rupert Konradi
- Laboratory for Surface Science and Technology, and ‡Institute of Polymers, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Wen Li
- Laboratory for Surface Science and Technology, and ‡Institute of Polymers, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Afang Zhang
- Laboratory for Surface Science and Technology, and ‡Institute of Polymers, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - A. Dieter Schlüter
- Laboratory for Surface Science and Technology, and ‡Institute of Polymers, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
| | - Marcus Textor
- Laboratory for Surface Science and Technology, and ‡Institute of Polymers, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
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Meyer J, Keul H, Möller M. Poly(glycidyl amine) and Copolymers with Glycidol and Glycidyl Amine Repeating Units: Synthesis and Characterization. Macromolecules 2011. [DOI: 10.1021/ma200757v] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jörg Meyer
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen and DWI an der RWTH Aachen e.V., Pauwelsstrasse 8, D-52056 Aachen, Germany
| | - Helmut Keul
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen and DWI an der RWTH Aachen e.V., Pauwelsstrasse 8, D-52056 Aachen, Germany
| | - Martin Möller
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen and DWI an der RWTH Aachen e.V., Pauwelsstrasse 8, D-52056 Aachen, Germany
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50
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Schulte VA, Diez M, Hu Y, Möller M, Lensen MC. Combined Influence of Substrate Stiffness and Surface Topography on the Antiadhesive Properties of Acr-sP(EO-stat-PO) Hydrogels. Biomacromolecules 2010; 11:3375-83. [DOI: 10.1021/bm100881y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Vera A. Schulte
- DWI e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, D-52056 Aachen, and Technische Universität Berlin, Institut für Chemie, Nanostrukturierte Biomaterialien, Berlin, Germany
| | - Mar Diez
- DWI e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, D-52056 Aachen, and Technische Universität Berlin, Institut für Chemie, Nanostrukturierte Biomaterialien, Berlin, Germany
| | - Yibing Hu
- DWI e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, D-52056 Aachen, and Technische Universität Berlin, Institut für Chemie, Nanostrukturierte Biomaterialien, Berlin, Germany
| | - Martin Möller
- DWI e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, D-52056 Aachen, and Technische Universität Berlin, Institut für Chemie, Nanostrukturierte Biomaterialien, Berlin, Germany
| | - Marga C. Lensen
- DWI e.V. and Institute of Technical and Macromolecular Chemistry, RWTH Aachen, D-52056 Aachen, and Technische Universität Berlin, Institut für Chemie, Nanostrukturierte Biomaterialien, Berlin, Germany
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