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Perrino C, Lee S, Spencer ND. Quantitative Comparison of the Hydration Capacity of Surface-Bound Dextran and Polyethylene Glycol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:14130-14140. [PMID: 38922294 PMCID: PMC11238585 DOI: 10.1021/acs.langmuir.4c01582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 06/27/2024]
Abstract
We have quantified and compared the hydration capacity (i.e., capability to incorporate water molecules) of the two surface-bound hydrophilic polymer chains, dextran (dex) and poly(ethylene glycol) (PEG), in the form of poly(l-lysine)-graft-dextran (PLL-g-dex) and poly(l-lysine)-graft-poly(ethylene glycol) (PLL-g-PEG), respectively. The copolymers were attached to a negatively charged silica-titania surface through the electrostatic interaction between the PLL backbone and the surface in neutral aqueous media. While the molecular weights of PLL and PEG were fixed, that of dex and the grafting density of PEG or dex on the PLL were varied. The hydration capacity of the polymer chains was quantified through the combined experimental approach of optical waveguide lightmode spectroscopy (OWLS) and quartz crystal microbalance with dissipation monitoring (QCM-D) to yield a value for areal solvation (Ψ), i.e., mass of associated solvent molecules within the polymer chains per unit substrate area. For the two series of copolymers with comparable stretched chain lengths of hydrophilic polymers, namely, PLL(20)-g-PEG(5) and PLL(20)-g-dex(10), the Ψ values gradually increased as the initial grafting density on the PLL backbone increased or as g decreased. However, the rate of increase in Ψ was higher for PEG than dextran chains, which was attributed to higher stiffness of the dextran chains. More importantly, the number of water molecules per hydrophilic group was clearly higher for PEG chains. Given that the -CH2CH2O- units that make up the PEG chains form a cage-like structure with 2-3 water molecules, these "strongly bound" water molecules can account for the slightly more favorable behavior of PEG compared to dextran in both aqueous lubrication and antifouling behavior of the copolymers.
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Affiliation(s)
- Chiara Perrino
- Laboratory
for Surface Science and Technology, Department of Materials, Vladimir-Prelog-Weg
5, ETH Zurich, CH-8093 Zurich, Switzerland
| | - Seunghwan Lee
- Laboratory
for Surface Science and Technology, Department of Materials, Vladimir-Prelog-Weg
5, ETH Zurich, CH-8093 Zurich, Switzerland
- Institute
of Functional Surfaces, School of Mechanical Engineering, University of Leeds, LS2 9JT Leeds, U.K.
| | - Nicholas D. Spencer
- Laboratory
for Surface Science and Technology, Department of Materials, Vladimir-Prelog-Weg
5, ETH Zurich, CH-8093 Zurich, Switzerland
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2
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Aghajani M, Esmaeili F. Anti-biofouling assembly strategies for protein & cell repellent surfaces: a mini-review. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1770-1789. [PMID: 34085909 DOI: 10.1080/09205063.2021.1932357] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The protein/cell interactions with the surface at the blood-biomaterial interface generally control the efficiency of biomedical devices. A wide range of active processes and slow kinetics occur simultaneously with many biomaterials in healthcare applications, leading to multiple biological reactions and reduced clinical functions. In this work, we present a brief review of studies as the interface between proteins and biomaterials. These include mechanisms of resistance to proteins, protein-rejecting polyelectrolyte multilayers, and coatings of hydrophilic, polysaccharide and phospholipid nature. The mechanisms required to attain surfaces that resist adhesion include steric exclusion, water-related effects, and volume effects. Also, approaches in the use of hydrophilic, highly hydrated, and electrically neutral coatings have demonstrated a good ability to decrease cell adhesion. Moreover, amongst the available methods, the approach of layer-by-layer deposition has been known as an interesting process to manipulate protein and cell adhesion behavior.
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Affiliation(s)
- Mahdi Aghajani
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.,School of Advanced Technologies in Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Fariba Esmaeili
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
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3
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Nichifor M, Stanciu MC, Doroftei F. Self-assembly of dextran - b - deoxycholic acid polyester copolymers: Copolymer composition and self-assembly procedure tune the aggregate size and morphology. Carbohydr Polym 2020; 252:117147. [PMID: 33183605 DOI: 10.1016/j.carbpol.2020.117147] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/23/2020] [Accepted: 09/23/2020] [Indexed: 12/13/2022]
Abstract
Self-assembly potential of new amphiphilic block copolymers containing dextran (Mn 4500, 8000, 15,000) and a semi-rigid deoxycholic acid-oligoethyleneglycol polyester (Mn 2500-8800, 2 or 4 ethyleneglycol units), was evaluated as a function of copolymer composition and self-assembly procedure, using dynamic light scattering and transmission electron microscopy. Addition of copolymer solution to water provided small star-like micelles (∼ 100 nm), while addition of water to copolymer solution led to various morphologies and sizes (60-600 nm), depending on polymer composition. Worm-like micelles were obtained from a copolymer containing dextran with Mn 4500 and 66 wt% polyester, and vesicles were formed by copolymers prepared from dextran with Mn 8000 and containing 46 wt% polyester. Presence of a longer oligoethyleneglycol decreased the size of micelles and vesicles due to an enhanced flexibility of the polyester hydrophobic block. The results allow the selection of the most appropriate parameters to obtain the desired aggregate characteristics.
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Affiliation(s)
- Marieta Nichifor
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, Iasi, 700457, Romania.
| | | | - Florica Doroftei
- "Petru Poni" Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda 41 A, Iasi, 700457, Romania
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4
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Stanciu MC, Nichifor M, Mocanu G, Tuchilus C, Ailiesei GL. Block copolymers containing dextran and deoxycholic acid polyesters. Synthesis, self-assembly and hydrophobic drug encapsulation. Carbohydr Polym 2019; 223:115118. [DOI: 10.1016/j.carbpol.2019.115118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/15/2019] [Accepted: 07/21/2019] [Indexed: 01/09/2023]
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5
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Saftics A, Prósz GA, Türk B, Peter B, Kurunczi S, Horvath R. In situ viscoelastic properties and chain conformations of heavily hydrated carboxymethyl dextran layers: a comparative study using OWLS and QCM-I chips coated with waveguide material. Sci Rep 2018; 8:11840. [PMID: 30087383 PMCID: PMC6081421 DOI: 10.1038/s41598-018-30201-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 06/05/2018] [Indexed: 01/30/2023] Open
Abstract
Hydration, viscoelastic properties and dominant structure of thin polymer layers on the surface of waveguide material were evaluated using optical waveguide lightmode spectroscopy (OWLS) and quartz crystal microbalance (QCM) methods. The fundamentally different principles of the two applied label-free biosensors enable to examine analyte layers from complementary aspects, e.g. to determine the amount of bound water in hydrated layers. In this study, a new QCM instrument with impedance measurement (QCM-I) is introduced. Its specially designed sensor chips, covered by thin film of waveguide material, supply identical surface as used in OWLS sensors, thus enabling to perform parallel measurements on the same type of surface. Viscoelastic analysis of the measured data was performed by our evaluation code developed in MATLAB environment, using the Voinova's Voigt-based model. In situ deposition experiments on the ultrathin films of poly(L-lysine)-graft-poly(ethylene glycol) (PLL-g-PEG) were conducted for instrumental and code validation. Additionally, a novel OWLS-QCM data evaluation methodology has been developed based on the concept of combining hydration and viscoelastic data with optical anisotropy results from OWLS measurements. This methodology provided insight into the time-dependent chain conformation of heavily hydrated nano-scaled layers, resulting in unprecedented structural, hydration and viscoelastic information on covalently grafted ultrathin carboxymethyl dextran (CMD) films. The measured mass values as well as hydration and viscoelastic properties were compared with the characteristics of PLL-g-PEG layers.
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Affiliation(s)
- Andras Saftics
- Nanobiosensorics Laboratory, Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós út 29-33, Budapest, 1121, Hungary
- Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, 1111, Hungary
| | - György Aurél Prósz
- Nanobiosensorics Laboratory, Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós út 29-33, Budapest, 1121, Hungary
| | - Barbara Türk
- Nanobiosensorics Laboratory, Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós út 29-33, Budapest, 1121, Hungary
- Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, Budapest, 1111, Hungary
| | - Beatrix Peter
- Nanobiosensorics Laboratory, Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós út 29-33, Budapest, 1121, Hungary
| | - Sándor Kurunczi
- Nanobiosensorics Laboratory, Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós út 29-33, Budapest, 1121, Hungary
| | - Robert Horvath
- Nanobiosensorics Laboratory, Centre for Energy Research, Hungarian Academy of Sciences, Konkoly Thege Miklós út 29-33, Budapest, 1121, Hungary.
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6
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Jeong Y, Kim KA, Kang SM. Effect of Catechol Content in Catechol-Conjugated Dextrans on Antiplatelet Performance. Polymers (Basel) 2017; 9:polym9080376. [PMID: 30971052 PMCID: PMC6418717 DOI: 10.3390/polym9080376] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 08/17/2017] [Accepted: 08/17/2017] [Indexed: 11/16/2022] Open
Abstract
The surface coating of solid substrates using dextrans has gained a great deal of attention, because dextran-coated surfaces show excellent anti-fouling property as well as biocompatibility behavior. Much effort has been made to develop efficient methods for grafting dextrans on solid surfaces. This led to the development of catechol-conjugated dextrans (Dex-C) which can adhere to a number of solid surfaces, inspired by the underwater adhesion behavior of marine mussels. The present study is a systematic investigation of the characteristics of surface coatings developed with Dex-C. Various Dex-C with different catechol contents were synthesized and used as a surface coating material. The effect of catechol content on surface coating and antiplatelet performance was investigated.
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Affiliation(s)
- Yeonwoo Jeong
- Department of Chemistry, Chungbuk National University, Chungbuk 28644, Korea.
| | - Kwang-A Kim
- Department of Chemistry, Chungbuk National University, Chungbuk 28644, Korea.
| | - Sung Min Kang
- Department of Chemistry, Chungbuk National University, Chungbuk 28644, Korea.
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7
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Gal N, Lassenberger A, Herrero-Nogareda L, Scheberl A, Charwat V, Kasper C, Reimhult E. Interaction of Size-Tailored PEGylated Iron Oxide Nanoparticles with Lipid Membranes and Cells. ACS Biomater Sci Eng 2017; 3:249-259. [DOI: 10.1021/acsbiomaterials.6b00311] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Noga Gal
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Andrea Lassenberger
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Laia Herrero-Nogareda
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Andrea Scheberl
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Verena Charwat
- Department
of Biotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Cornelia Kasper
- Department
of Biotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
| | - Erik Reimhult
- Department
of Nanobiotechnology, Institute for Biologically Inspired Materials, University of Natural Resources and Life Sciences Vienna, Muthgasse 11-II, A-1190 Vienna, Austria
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8
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Saftics A, Kurunczi S, Szekrényes Z, Kamarás K, Khánh NQ, Sulyok A, Bſsze S, Horvath R. Fabrication and characterization of ultrathin dextran layers: Time dependent nanostructure in aqueous environments revealed by OWLS. Colloids Surf B Biointerfaces 2016; 146:861-70. [DOI: 10.1016/j.colsurfb.2016.06.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 06/24/2016] [Accepted: 06/27/2016] [Indexed: 11/30/2022]
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9
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Noel S, Fortier C, Murschel F, Belzil A, Gaudet G, Jolicoeur M, De Crescenzo G. Co-immobilization of adhesive peptides and VEGF within a dextran-based coating for vascular applications. Acta Biomater 2016; 37:69-82. [PMID: 27039978 DOI: 10.1016/j.actbio.2016.03.043] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 02/11/2016] [Accepted: 03/30/2016] [Indexed: 11/25/2022]
Abstract
UNLABELLED Multifunctional constructs providing a proper environment for adhesion and growth of selected cell types are needed for most tissue engineering and regenerative medicine applications. In this context, vinylsulfone (VS)-modified dextran was proposed as a matrix featuring low-fouling properties as well as multiple versatile moieties. The displayed VS groups could indeed react with thiol, amine or hydroxyl groups, be it for surface grafting, crosslinking or subsequent tethering of biomolecules. In the present study, a library of dextran-VS was produced, grafted to aminated substrates and characterized in terms of degree of VS modification (%VS), cell-repelling properties and potential for the oriented grafting of cysteine-tagged peptides. As a bioactive coating of vascular implants, ECM peptides (e.g. RGD) as well as vascular endothelial growth factor (VEGF) were co-immobilized on one of the most suitable dextran-VS coating (%VS=ca. 50% of saccharides units). Both RGD and VEGF were efficiently tethered at high densities (ca. 1nmol/cm(2) and 50fmol/cm(2), respectively), and were able to promote endothelial cell adhesion as well as proliferation. The latter was enhanced to the same extent as with soluble VEGF and proved selective to endothelial cells over smooth muscle cells. Altogether, multiple biomolecules could be efficiently incorporated into a dextran-VS construct, while maintaining their respective biological activity. STATEMENT OF SIGNIFICANCE This work addresses the need for multifunctional coatings and selective cell response inherent to many tissue engineering and regenerative medicine applications, for instance, vascular graft. More specifically, a library of dextrans was first generated through vinylsulfone (VS) modification. Thoroughly selected dextran-VS provided an ideal platform for unbiased study of cell response to covalently grafted biomolecules. Considering that processes such as healing and angiogenesis require multiple factors acting synergistically, vascular endothelial growth factor (VEGF) was then co-immobilized with the cell adhesive RGD peptide within our dextran coating through a relevant strategy featuring orientation and specificity. Altogether, both adhesive and proliferative cues could be incorporated into our construct with additive, if not synergetic, effects.
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10
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Zen F, Angione MD, Behan JA, Cullen RJ, Duff T, Vasconcelos JM, Scanlan EM, Colavita PE. Modulation of Protein Fouling and Interfacial Properties at Carbon Surfaces via Immobilization of Glycans Using Aryldiazonium Chemistry. Sci Rep 2016; 6:24840. [PMID: 27108562 PMCID: PMC4843010 DOI: 10.1038/srep24840] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 04/05/2016] [Indexed: 11/25/2022] Open
Abstract
Carbon materials and nanomaterials are of great interest for biological applications such as implantable devices and nanoparticle vectors, however, to realize their potential it is critical to control formation and composition of the protein corona in biological media. In this work, protein adsorption studies were carried out at carbon surfaces functionalized with aryldiazonium layers bearing mono- and di-saccharide glycosides. Surface IR reflectance absorption spectroscopy and quartz crystal microbalance were used to study adsorption of albumin, lysozyme and fibrinogen. Protein adsorption was found to decrease by 30–90% with respect to bare carbon surfaces; notably, enhanced rejection was observed in the case of the tested di-saccharide vs. simple mono-saccharides for near-physiological protein concentration values. ζ-potential measurements revealed that aryldiazonium chemistry results in the immobilization of phenylglycosides without a change in surface charge density, which is known to be important for protein adsorption. Multisolvent contact angle measurements were used to calculate surface free energy and acid-base polar components of bare and modified surfaces based on the van Oss-Chaudhury-Good model: results indicate that protein resistance in these phenylglycoside layers correlates positively with wetting behavior and Lewis basicity.
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Affiliation(s)
- Federico Zen
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, College Green, Dublin 2, Ireland
| | - M Daniela Angione
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, College Green, Dublin 2, Ireland
| | - James A Behan
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Ronan J Cullen
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Thomas Duff
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Joana M Vasconcelos
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Eoin M Scanlan
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, College Green, Dublin 2, Ireland
| | - Paula E Colavita
- School of Chemistry and Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin, College Green, Dublin 2, Ireland
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11
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Salay LC, Petri DF, Nakaie CR, Schreier S. Adsorption of the antimicrobial peptide tritrpticin onto solid and liquid surfaces: Ion-specific effects. Biophys Chem 2015; 207:128-34. [DOI: 10.1016/j.bpc.2015.10.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 10/24/2015] [Accepted: 10/24/2015] [Indexed: 11/28/2022]
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12
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Michel EC, Montaño-Machado V, Chevallier P, Labbé-Barrère A, Letourneur D, Mantovani D. Dextran grafting on PTFE surface for cardiovascular applications. BIOMATTER 2015; 4:e28805. [PMID: 25482414 PMCID: PMC4122567 DOI: 10.4161/biom.28805] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The modification of biomaterial surfaces with biomolecules influences the biological response. In this work, caboxymethyldextrans (CMD) with different degrees of substitution have been grafted to surfaces by introduction of amino moieties directly onto the substrate surface. Polytetrafluoroethylene was selected as a model substrate for biomaterial as it is already largely used for cardiovascular clinical applications. Firstly, CMD polymers were characterized by FTIR, 1H-NMR, and conductimetric titration. Then, the coatings have been analyzed by XPS to confirm the grafting and determine the composition. Once characterized, biological performances of CMD coatings were investigated. The hemocompatibility was ascertained using the free hemoglobin method. The effects on endothelial and smooth muscle cell adhesion were also studied. Results indicated that CMD at a 0.2 substitution degree, significantly influenced the biological property of PTFE by exhibiting non-thrombogenic properties as well as enhancing endothelial cell adhesion along with limiting smooth muscle cell adhesion. This work suggested the creation of versatile pro-active biomaterials suitable for different biomedical applications.
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Affiliation(s)
- Eléonore C Michel
- a Laboratory for Biomaterials & Bioengineering (CRC-I); Dept Min-Met-Materials Eng. & CHU de Quebec Research Center; Laval University; Quebec City, QC Canada
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13
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Kinetics of formation of polysaccharide-covered micrometric oil droplets under mechanical agitation. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2014.10.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Balaji A, Jaganathan SK, Vellayappan MV, John AA, Subramanian AP, SelvaKumar M, Mohandas H, M SR, Supriyanto E. Prospects of common biomolecules as coating substances for polymeric biomaterials. RSC Adv 2015. [DOI: 10.1039/c5ra12693b] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The concept of using common biomolecules like proteins, carbohydrates,etc., for improving the biocompatibility seems rational and effective because of the bio-friendly surface that they present, remains closer in mimicking the innate environment.
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Affiliation(s)
- A. Balaji
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - S. K. Jaganathan
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - M. V. Vellayappan
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - A. A. John
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - A. P. Subramanian
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
| | - M. SelvaKumar
- Rubber Technology Centre
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - H. Mohandas
- Department of Biomedical Engineering
- University of Texas Arlington
- USA-TX 76019
| | - Sundar Raj M
- Department of Biomedical Engineering
- Bharath University
- Chennai-600073
- India
| | - Eko Supriyanto
- IJN-UTM Cardiovascular Engineering Centre
- Faculty of Biosciences and Medical Engineering
- Universiti Teknologi Malaysia
- Johor Bahru 81310
- Malaysia
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15
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Shang X, Fan X, Yang S, Xie Z, Guo Y, Hu Z. Synthesis, characterization and self-assembly behavior of zwitterionic amphiphilic triblock copolymers bearing pendant amino acid residues. RSC Adv 2015. [DOI: 10.1039/c5ra16414a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Zwitterionic amphiphilic triblock copolymers bearing pendant amino acid residues PAGE/cys-b-PCL-b-PEG were synthesized and characterized. The self-assembly behavior of the copolymers was studied.
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Affiliation(s)
- Xiaohong Shang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Laboratory of Chemical Pharmaceuticals & Biomedical Materials
- School of Chemistry and Chemical Engineering
| | - Xiaoshan Fan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Laboratory of Chemical Pharmaceuticals & Biomedical Materials
- School of Chemistry and Chemical Engineering
| | - Shaohui Yang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Laboratory of Chemical Pharmaceuticals & Biomedical Materials
- School of Chemistry and Chemical Engineering
| | - Zhengzheng Xie
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Laboratory of Chemical Pharmaceuticals & Biomedical Materials
- School of Chemistry and Chemical Engineering
| | - Yuming Guo
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Laboratory of Chemical Pharmaceuticals & Biomedical Materials
- School of Chemistry and Chemical Engineering
| | - Zhiguo Hu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals
- Key Laboratory of Green Chemical Media and Reactions
- Ministry of Education
- Henan Engineering Laboratory of Chemical Pharmaceuticals & Biomedical Materials
- School of Chemistry and Chemical Engineering
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16
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Liu L, Li W, Liu Q. Recent development of antifouling polymers: structure, evaluation, and biomedical applications in nano/micro-structures. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 6:599-614. [DOI: 10.1002/wnan.1278] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 04/25/2014] [Accepted: 05/09/2014] [Indexed: 12/19/2022]
Affiliation(s)
- Lingyun Liu
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron OH USA
| | - Wenchen Li
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron OH USA
| | - Qingsheng Liu
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron OH USA
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17
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Hawkins ML, Rufin MA, Raymond JE, Grunlan MA. Direct observation of the nanocomplex surface reorganization of antifouling silicones containing a highly mobile PEO-silane amphiphile. J Mater Chem B 2014; 2:5689-5697. [DOI: 10.1039/c4tb01008f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The water-driven, dynamic nanoscale reorganization of PEO-silane amphiphiles within a silicone matrix was directly observed via atomic force microscopy.
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Affiliation(s)
- Melissa L. Hawkins
- Texas A&M University
- Department of Biomedical Engineering
- Department of Materials Science and Engineering
- College Station, USA
| | - Marc A. Rufin
- Texas A&M University
- Department of Biomedical Engineering
- Department of Materials Science and Engineering
- College Station, USA
| | - Jeffery E. Raymond
- Texas A&M University
- Department of Chemistry
- Laboratory for Synthetic-Biologic Interactions
- College Station, USA
| | - Melissa A. Grunlan
- Texas A&M University
- Department of Biomedical Engineering
- Department of Materials Science and Engineering
- College Station, USA
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Scholten A, Menges B, Juebner M, Rothschild MA, Bender K. A mixed alkanethiol based immunosensor for surface plasmon field-enhanced fluorescence spectroscopy in serum. Analyst 2013; 138:1705-12. [DOI: 10.1039/c3an35657d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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19
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Liu Q, Singh A, Liu L. Amino Acid-Based Zwitterionic Poly(serine methacrylate) as an Antifouling Material. Biomacromolecules 2012; 14:226-31. [DOI: 10.1021/bm301646y] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qingsheng Liu
- Department
of Chemical and Biomolecular Engineering, University of Akron, Akron, Ohio 44325, United States
| | - Anuradha Singh
- Department
of Chemical and Biomolecular Engineering, University of Akron, Akron, Ohio 44325, United States
| | - Lingyun Liu
- Department
of Chemical and Biomolecular Engineering, University of Akron, Akron, Ohio 44325, United States
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20
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Du YJ, Berry LR, Chan AKC. Chemical–Physical Characterization of Polyurethane Catheters Modified with a Novel Antithrombin-Heparin Covalent Complex. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 22:2277-94. [DOI: 10.1163/092050610x538227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Ying Jun Du
- a Macromerica Biomedical Inc., North Billerica, MA 01862, USA
| | - Leslie R. Berry
- b Thrombosis and Atherosclerosis Research Institute, McMaster University, DB-CVSRI, Hamilton General Hospital Campus, 237 Barton Street East, Hamilton, ON, Canada L8L 2X2
| | - Anthony K. C. Chan
- c Thrombosis and Atherosclerosis Research Institute, McMaster University, DB-CVSRI, Hamilton General Hospital Campus, 237 Barton Street East, Hamilton, ON, Canada L8L 2X2.
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21
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Predicting protein instability in sustained protein delivery systems using spectral-phase interference. Biomaterials 2012; 33:1929-38. [DOI: 10.1016/j.biomaterials.2011.11.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2011] [Accepted: 11/15/2011] [Indexed: 11/17/2022]
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22
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Paez JI, Brunetti V, Strumia MC, Becherer T, Solomun T, Miguel J, Hermanns CF, Calderón M, Haag R. Dendritic polyglycerolamine as a functional antifouling coating of gold surfaces. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32486e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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23
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Hawkins ML, Grunlan MA. The protein resistance of silicones prepared with a PEO-silane amphiphile. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32322b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Kozak D, Chen A, Bax J, Trau M. Protein resistance of dextran and dextran-poly(ethylene glycol) copolymer films. BIOFOULING 2011; 27:497-503. [PMID: 21614699 PMCID: PMC3221008 DOI: 10.1080/08927014.2011.584618] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The protein resistance of dextran and dextran-poly(ethylene glycol) (PEG) copolymer films was examined on an organosilica particle-based assay support. Comb-branched dextran-PEG copolymer films were synthesized in a two step process using the organosilica particle as a solid synthetic support. Particles modified with increasing amounts (0.1-1.2 mg m(-2)) of three molecular weights (10,000, 66,900, 400,000 g mol(-1)) of dextran were found to form relatively poor protein-resistant films compared to dextran-PEG copolymers and previously studied PEG films. The efficacy of the antifouling polymer films was found to be dependent on the grafted amount and its composition, with PEG layers being the most efficient, followed by dextran-PEG copolymers, and dextran alone being the least efficient. Immunoglobulin gamma (IgG) adsorption decreased from ∼5 to 0.5 mg m(-2) with increasing amounts of grafted dextran, but bovine serum albumin (BSA) adsorption increased above monolayer coverage (∼2 mg m(-2)) indicating ternary adsorption of the smaller protein within the dextran layer.
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Affiliation(s)
- Darby Kozak
- Level 5 East, Center for Biomarker Research and Development, Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Queensland, Australia 4072
| | - Annie Chen
- Level 5 East, Center for Biomarker Research and Development, Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Queensland, Australia 4072
| | - Jacinda Bax
- Level 5 East, Center for Biomarker Research and Development, Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Queensland, Australia 4072
| | - Matt Trau
- Level 5 East, Center for Biomarker Research and Development, Australian Institute for Bioengineering and Nanotechnology, University of Queensland, St Lucia, Queensland, Australia 4072
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25
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Leclair AM, Ferguson SS, Lagugné-Labarthet F. Surface patterning using plasma-deposited fluorocarbon thin films for single-cell positioning and neural circuit arrangement. Biomaterials 2011; 32:1351-60. [DOI: 10.1016/j.biomaterials.2010.10.051] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Accepted: 10/22/2010] [Indexed: 12/28/2022]
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26
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Ferrer MCC, Yang S, Eckmann DM, Composto RJ. Creating biomimetic polymeric surfaces by photochemical attachment and patterning of dextran. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:14126-34. [PMID: 20712352 PMCID: PMC2932844 DOI: 10.1021/la102315j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
In this work, we report the preparation of photoactive dextran and demonstrate its utility by photochemically attaching it onto various polymeric substrates. The attachment of homogeneous and patterned dextran films was performed on polyurethane and polystyrene, with detailed analysis of surface morphology, swelling behavior, and the protein resistance of these substrates. The described photoactive dextran and attachment procedure is applicable to a wide variety of substrates while accommodating surfaces with complex surface geometries. Dextran with azide content between 22 and 0.3 wt % was produced by esterification with p-azidobenzoic acid. Dextran (1.2 wt % azide) was photografted onto plasma oxidized polyurethane and polystyrene and displayed thicknesses of 5 +/- 3 and 7 +/- 3 nm, respectively. The patterned dextran on oxidized polyurethane was patchy with a nominal height difference between dextranized and nondextranized regions. The azidated dextran on oxidized polystyrene exhibited a distinct step in height. In the presence of phosphate buffered saline (PBS), the dextranized regions became smoother and more uniform without affecting the height difference at the oxidized polyurethane boundary. However, the dextranized regions on oxidized polyurethane were observed to swell by a factor of 3 relative to the dried thickness. These dissimilarities were attributed to hydrogen bonding between the dextran and oxidized polyurethane and were confirmed by the photoimmobiliization in the presence of LiCl. The resulting surface was the smoothest of all the azidated dextran samples (R(rms) = 1 +/- 0.3 nm) and swelled up to 2 times its dried thickness in PBS. The antifouling properties of dextran functionalized surfaces were verified by the selective adsorption of FITC-labeled human albumin only on the nondextranized regions of the patterned polyurethane and polystyrene substrates.
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Affiliation(s)
- M Carme Coll Ferrer
- Institute for Medicine and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6202, USA.
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27
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Surface modification on polyurethanes by using bioactive carboxymethylated fungal glucan from Poria cocos. Colloids Surf B Biointerfaces 2010; 81:629-33. [PMID: 20817490 DOI: 10.1016/j.colsurfb.2010.08.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2010] [Revised: 07/19/2010] [Accepted: 08/06/2010] [Indexed: 11/21/2022]
Abstract
In this work, a water-insoluble β-D-glucan (PCSG), isolated from Poria cocos, was carboxymethylated to create a water-soluble derivative named as CP. After free amino groups have been introduced, CP was covalently immobilized onto PU surface. The hydrophilicity and the concentration of carboxyl group on the modified PU surface were determined. The fibrinogen and albumin adsorption to the surface, in vitro blood compatibility, and antibacterial activity of the surface against Pseudomonas aeruginosa were evaluated. The water contact angle measurement indicated that the hydrophilicity of PU surface increased after modification. The fibrinogen adsorption of the modified PU surface decreased 51.5%, compared with control PU. CP immobilization could prolong the blood coagulation time was suggested by APTT experiment. Antibacterial activity experiments indicated that CP modified surface obviously suppressed the growth of P. aeruginosa. Thereby, CP immobilization improves blood compatibility of PU surface and introduces special antibacterial bioactivity.
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28
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Otsuka H. Nanofabrication of nonfouling surfaces for micropatterning of cell and microtissue. Molecules 2010; 15:5525-46. [PMID: 20714311 PMCID: PMC6257743 DOI: 10.3390/molecules15085525] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 07/20/2010] [Accepted: 08/04/2010] [Indexed: 12/13/2022] Open
Abstract
Surface engineering techniques for cellular micropatterning are emerging as important tools to clarify the effects of the microenvironment on cellular behavior, as cells usually integrate and respond the microscale environment, such as chemical and mechanical properties of the surrounding fluid and extracellular matrix, soluble protein factors, small signal molecules, and contacts with neighboring cells. Furthermore, recent progress in cellular micropatterning has contributed to the development of cell-based biosensors for the functional characterization and detection of drugs, pathogens, toxicants, and odorants. In this regards, the ability to control shape and spreading of attached cells and cell-cell contacts through the form and dimension of the cell-adhesive patches with high precision is important. Commitment of stem cells to different specific lineages depends strongly on cell shape, implying that controlled microenvironments through engineered surfaces may not only be a valuable approach towards fundamental cell-biological studies, but also of great importance for the design of cell culture substrates for tissue engineering. To develop this kind of cellular microarray composed of a cell-resistant surface and cell attachment region, micropatterning a protein-repellent surface is important because cellular adhesion and proliferation are regulated by protein adsorption. The focus of this review is on the surface engineering aspects of biologically motivated micropatterning of two-dimensional surfaces with the aim to provide an introductory overview described in the literature. In particular, the importance of non-fouling surface chemistries is discussed.
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Affiliation(s)
- Hidenori Otsuka
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Shinjuku-ku, Tokyo, Japan.
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29
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Farrell M, Beaudoin S. Surface forces and protein adsorption on dextran- and polyethylene glycol-modified polydimethylsiloxane. Colloids Surf B Biointerfaces 2010; 81:468-75. [PMID: 20801620 DOI: 10.1016/j.colsurfb.2010.07.059] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2009] [Revised: 07/19/2010] [Accepted: 07/20/2010] [Indexed: 10/19/2022]
Abstract
Dextran and polyethylene glycol (PEG) are often covalently bound to the surface of polydimethylsiloxane (PDMS) for the purpose of modifying its hydrophilicity and biocompatibility. In this work, the effects of the dextran and PEG on the morphology, wetting, and surface charge of the resulting surfaces were quantified and correlated with changes in the amount of fibrinogen and albumin adsorbed from aqueous solution. PDMS films were functionalized in a microwave oxygen plasma to create surface hydroxyl groups that were subsequently aminated by incubation in a (3-aminopropyl)trimethoxysilane (APTES) solution. Oxidized dextran and PEG-aldehyde were linked to the surface amines via reductive amination. This process resulted in low surface coverage of immobilized PEG in the end-on conformation and a more uniform and dense distribution of side-on immobilized dextran. The immobilized dextran reduced the contact angle of the PDMS film from 109° to 80° and neutralized the zeta potential over the pH range from 3 to 11. An atomic force microscope was used to measure the interaction force between the modified PDMS and a model hydrophobic surface (polystyrene latex) and a model hydrophilic surface (silica) in aqueous solution to show that van der Waals and hydrophobic attractive forces are the dominant forces for protein adsorption in this system. The PEG- and dextran-modified PDMS were exposed to BSA and fibrinogen to test their resistance to protein adsorption. The coatings were ineffective at reducing the adsorption of either molecule, and the dextran-modification of the PDMS caused more BSA to adsorb than in the case of the unmodified PDMS.
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Affiliation(s)
- Megan Farrell
- Department of Chemical Engineering, Purdue University, 480 Stadium Mall Dr., West Lafayette, IN 47907, United States
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30
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Murthy R, Bailey BM, Valentin-Rodriguez C, Ivanisevic A, Grunlan MA. Amphiphilic silicones prepared from branched PEO-silanes with siloxane tethers. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/pola.24203] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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31
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Controlling surface porosity and release from hydrogels using a colloidal particle coating. J Colloid Interface Sci 2010; 349:498-504. [PMID: 20579657 DOI: 10.1016/j.jcis.2010.05.095] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 05/18/2010] [Accepted: 05/30/2010] [Indexed: 01/06/2023]
Abstract
Recent studies suggest that coating microcapsules by a shell composed of impenetrable colloidal particles (thereby forming 'colloidosomes') can be used to control surface porosity, and therefore, permeability. The voids between the particles in the coating define the size of the surface pores available for transport. However, to date, data demonstrating this selectivity has been largely qualitative. In this paper we examine, quantitatively, the effect of a surface coating (shell), composed of colloidal particles, on release from hydrogels. We find that the presence of a colloidal shell does indeed reduce the rate of transport of three model molecules: Aspirin, caffeine, and FITC-dextran with MW of approximately 3000-5000. Contrary to expectation, however, we find that for all three molecules the reduction in transport rate is largely independent of the dimensions of the particles composing the shell, despite differences that range over three orders of magnitude. In the case of the small molecules, caffeine and aspirin, the colloidal shell reduces the effective diffusion coefficient by a factor of 3. In the case of dextran, the suppression in the release rate due to the colloidal shell was much larger. These results are explained using a simple diffusion model that accounts for the volume fraction and diameter of the colloidal particles in the shell, and the size of the diffusing molecules.
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32
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Poly(L-lysine)-grafted-poly(ethylene glycol)-based surface-chemical gradients. Preparation, characterization, and first applications. Biointerphases 2010; 1:156-65. [PMID: 20408629 DOI: 10.1116/1.2431704] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A simple dipping process has been used to prepare PEGylated surface gradients from the polycationic polymer poly(L-lysine), grafted with poly(ethylene glycol) (PLL-g-PEG), on metal oxide substrates, such as TiO(2) and Nb(2)O(5). PLL-g-PEG coverage gradients were prepared during an initial, controlled immersion and characterized with variable angle spectroscopic ellipsometry and x-ray photoelectron spectroscopy. Gradients with a linear change in thickness and coverage were generated by the use of an immersion program based on an exponential function. These single-component gradients were used to study the adsorption of proteins of different sizes and shapes, namely, albumin, immunoglobulin G, and fibrinogen. The authors have shown that the density and size of defects in the PLL-g-PEG adlayer determine the amount of protein that is adsorbed at a certain adlayer thickness. In a second step, single-component gradients of functionalized PLL-g-PEG were backfilled with nonfunctionalized PLL-g-PEG to generate two-component gradients containing functional groups, such as biotin, in a protein-resistant background. Such gradients were combined with a patterning technique to generate individually addressable spots on a gradient surface. The surfaces generated in this way show promise as a useful and versatile biochemical screening tool and could readily be incorporated into a method for studying the behavior of cells on functionalized surfaces.
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33
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Lord MS, Pasqui D, Barbucci R, Milthorpe BK. Protein adsorption on derivatives of hyaluronic acid and subsequent cellular response. J Biomed Mater Res A 2010; 91:635-46. [PMID: 18985762 DOI: 10.1002/jbm.a.32219] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The modulation of biological interactions with artificial surfaces is a vital aspect of biomaterials research. Serum protein adsorption onto photoreactive hyaluronic acid (Hyal-N(3)) and its sulfated derivative (HyalS-N(3)) was analyzed to determine extent of protein interaction and protein conformation as well as subsequent cell adhesion. There were no significant (p < 0.01) differences in the amount of protein adsorbed to the two polymers; however, proteins were found to be more loosely bound on HyalS-N(3) compared with Hyal-N(3). Fibronectin was adsorbed onto HyalS-N(3) in such an orientation as to allow the availability of the cell binding region, while there was more restricted access to this region on fibronectin adsorbed onto Hyal-N(3). This was confirmed by reduced cell adhesion on fibronectin precoated Hyal-N(3) compared with fibronectin precoated HyalS-N(3). Minimal cell adhesion was observed on albumin and serum precoated Hyal-N(3). The quartz crystal microbalance confirmed that specific cell-surface interactions were experienced by cells interacting with the fibronectin precoated polymers and serum precoated HyalS-N(3).
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Affiliation(s)
- Megan S Lord
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia.
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34
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Mahadeva SK, Kim J. Effect of polyethylene oxide-polyethylene glycol content and humidity on performance of electro-active paper actuators based on cellulose/polyethylene oxide-polyethylene glycol microcomposite. POLYM ENG SCI 2010. [DOI: 10.1002/pen.21644] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Abstract
This review presents an overview of polysaccharide-conjugated synthetic polymers and their use in tissue-engineered scaffolds and drug-delivery applications. This topic will be divided into four categories: (1) polymeric materials modified with non-mammalian polysaccharides such as alginate, chitin, and dextran; (2) polymers modified with mammalian polysaccharides such as hyaluronan, chondroitin sulfate, and heparin; (3) multi-polysaccharide-derivatized polymer conjugate systems; and (4) polymers containing polysaccharide-mimetic molecules. Each section will discuss relevant conjugation techniques, analysis, and the impact of these materials as micelles, particles, or hydrogels used in in-vitro and in-vivo biomaterial applications.
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Affiliation(s)
- Aaron D. Baldwin
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716
- Delaware Biotechnology Institute, 15 Innovation Way, Newark, DE 19711
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716
- Delaware Biotechnology Institute, 15 Innovation Way, Newark, DE 19711
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36
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Arima Y, Kawagoe M, Toda M, Iwata H. Complement activation by polymers carrying hydroxyl groups. ACS APPLIED MATERIALS & INTERFACES 2009; 1:2400-2407. [PMID: 20355878 DOI: 10.1021/am9005463] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Hydrogels of polymers carrying surface hydroxyl groups strongly activate the complement system through the alternative pathway, although it has also been reported that solutions of polymers do not. To address these curious, inconsistent results, we examined the effect of polymer states, either immobilized on a surface or soluble in serum, on the complement activation using a surface plasmon resonance apparatus and enzyme-linked immunosorbent assay. We clearly showed that dextran- and poly(vinyl alcohol)-immobilized surfaces strongly activated the complement system but that soluble polymers could not, even when the amounts of the soluble polymers added to serum were 4-2000 times higher than those on the polymer-immobilized surfaces.
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Affiliation(s)
- Yusuke Arima
- Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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37
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Volden S, Zhu K, Nyström B, Glomm WR. Use of cellulose derivatives on gold surfaces for reduced nonspecific adsorption of immunoglobulin G. Colloids Surf B Biointerfaces 2009; 72:266-71. [DOI: 10.1016/j.colsurfb.2009.04.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Revised: 04/01/2009] [Accepted: 04/16/2009] [Indexed: 11/30/2022]
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38
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Hamilton-Brown P, Gengenbach T, Griesser HJ, Meagher L. End terminal, poly(ethylene oxide) graft layers: surface forces and protein adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:9149-9156. [PMID: 19534458 DOI: 10.1021/la900703e] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Covalently grafted poly(ethylene oxide) coatings have been widely studied for use in biomedical applications, particularly for the reduction of protein and other biomolecule adsorption. However, many of these studies have not characterized the hydrated structure of the coatings. This new study uses a combination of silica colloid probe interaction force measurements using atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS) in order to determine the grafting density and hydrated layer structure of monomethoxy poly(ethylene oxide) aldehyde layers, covalently grafted onto amine plasma polymer surfaces, and their interactions with silica surfaces. For high grafting densities, purely repulsive interactions were measured as expected for densely grafted polymer brushes. These interactions could be described by theoretical expectations for compression of one polymer brush layer. However, at lower grafting densities, attractive interactions were observed at larger separation distances, originating from bridging interactions due to adsorption of the PEO chains on the surface of the silica colloid probe. This is a new finding indicating that the coupled PEO molecules have sufficient conformational freedom to interact strongly with an adjacent surface or, for example, protein molecules for which there is an affinity. The attractive interactions could be removed by grafting an additional PEO layer onto the silica colloid probe. Protein adsorption measurements confirmed that at high grafting densities, the amount of adsorbed protein on the PEO grafted surfaces was greatly reduced, to the order of the detection limit for the XPS technique.
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Affiliation(s)
- Paul Hamilton-Brown
- CSIRO Molecular and Health Technologies, Bag 10, Clayton South, Victoria 3169, Australia
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39
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Khandwekar AP, Patil DP, Khandwekar V, Shouche YS, Sawant S, Doble M. TecoflexTM functionalization by curdlan and its effect on protein adsorption and bacterial and tissue cell adhesion. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2009; 20:1115-1129. [PMID: 19093193 DOI: 10.1007/s10856-008-3655-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2008] [Accepted: 11/24/2008] [Indexed: 05/27/2023]
Abstract
Curdlan modified polyurethane was created by physically entrapping the former on TecoflexTM surface. ATR-FT-IR, SEM-EDAX and AFM analysis revealed the formation of stable thin curdlan layer on the film. Contact-angle measurements showed that the modified film was highly hydrophilic. Confocal laser scanning microscopy showed the existence of entrapped layer of approximately 20-25 microm in depth. Surface entrapment of curdlan minimized both protein adsorption and mouse L929 fibroblast cell adhesion relative to the control. Surface induced cellular inflammatory response was determined from the expression levels of proinflammatory cytokine TNF-alpha, by measuring their mRNA profiles in the cells using real time polymerase chain reaction (RT-PCR) normalized to the housekeeping gene GAPDH. The inflammatory response was suppressed on the modified substrate as expression of TNF-alpha mRNA was found to be up regulated on TecoflexTM, while it was significantly lower on curdlan substrate. The adhesion of S. aureus decreased by 62% on curdlan modified surface. Using such simple surface entrapment process, it will be possible to develop well-defined surface modifications that promote specific cell interactions and perhaps better performance in the long-term as implant.
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Affiliation(s)
- Anand P Khandwekar
- Department of Biotechnology, Indian Institute of Technology Madras, Chennai, India
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40
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Sun C, Fang C, Stephen Z, Veiseh O, Hansen S, Lee D, Ellenbogen RG, Olson J, Zhang M. Tumor-targeted drug delivery and MRI contrast enhancement by chlorotoxin-conjugated iron oxide nanoparticles. Nanomedicine (Lond) 2009; 3:495-505. [PMID: 18694312 DOI: 10.2217/17435889.3.4.495] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
AIMS This study examines the capabilities of an actively targeting superparamagnetic nanoparticle to specifically deliver therapeutic and MRI contrast agents to cancer cells. MATERIALS & METHODS Iron oxide nanoparticles were synthesized and conjugated to both a chemotherapeutic agent, methotrexate, and a targeting ligand, chlorotoxin, through a poly(ethylene glycol) linker. Cytotoxicity of this nanoparticle conjugate was evaluated by Alamar Blue cell viability assays, while tumor-cell specificity was examined in vitro and in vivo by MRI. RESULTS & DISCUSSION Characterization of these multifunctional nanoparticles confirms the successful attachment of both drug and targeting ligands. The targeting nanoparticle demonstrated preferential accumulation and increased cytotoxicity in tumor cells. Furthermore, prolonged retention of these nanoparticles was observed within tumors in vivo. CONCLUSION The improved specificity, extended particle retention and increased cytotoxicity toward tumor cells demonstrated by this multifunctional nanoparticle system suggest that it possesses potential for applications in cancer diagnosis and treatment.
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Affiliation(s)
- Conroy Sun
- University of Washington, Department of Materials Science & Engineering, Seattle, WA 98195, USA
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41
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Hower JC, He Y, Jiang S. A molecular simulation study of methylated and hydroxyl sugar-based self-assembled monolayers: Surface hydration and resistance to protein adsorption. J Chem Phys 2008; 129:215101. [DOI: 10.1063/1.3012563] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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42
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Perrino C, Lee S, Choi SW, Maruyama A, Spencer ND. A biomimetic alternative to poly(ethylene glycol) as an antifouling coating: resistance to nonspecific protein adsorption of poly(L-lysine)-graft-dextran. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:8850-6. [PMID: 18616303 DOI: 10.1021/la800947z] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Poly( L-lysine)- graft-dextran (PLL- g-dex), graft copolymers with dextran side chains grafted onto a poly( L-lysine) backbone, previously shown to be effective as stabilizers of DNA triple helices and as carriers of functional genes to target cells or tissues, were employed in this work to prevent nonspecific adsorption of proteins, as determined by means of optical waveguide lightmode spectroscopy. PLL- g-dex copolymers readily adsorb from aqueous solution onto negatively charged oxide surfaces and significantly reduce nonspecific protein adsorption onto bare silica-titania surfaces. While effective and equivalent surface adsorption and antifouling properties were observed for PLL- g-dex copolymers in a variety of architectures, nanotribological analysis by atomic force microscopy was able to distinguish between the different brush densities produced.
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Affiliation(s)
- Chiara Perrino
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, Wolfgang-Pauli-Strasse 10, Zurich, Switzerland
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Monchaux E, Vermette P. Cell adhesion resistance mechanisms using arrays of dextran-derivative layers. J Biomed Mater Res A 2008; 85:1052-63. [PMID: 17937414 DOI: 10.1002/jbm.a.31580] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
To control interactions at the cell-material interface, low-fouling polymer coatings are used to prevent nonspecific interactions. Subsequent biosignals may be grafted on these low-fouling layers to induce specific biological responses. A polymer array technology was developed to study structural diversity of carboxy-methyl-dextran (CMD) grafted layers in connection with their cell repulsion ability. Arrays of CMD layers were exposed to fibroblasts to screen for cell resistant layers according to the immobilization conditions used to produce these surfaces. Cell cytoskeleton and fibronectin matrix deposition and reorganization were labeled in short-term (4 and 12 h) and long-term (3 days of cell confluence) cell adhesion assays. Results suggest that CMD layers that were resistant to cell adhesion were dense, flexible, and presented a regular (i.e., defect-free) hydrated surface. Cell-resistant CMD layers prevented cell matrix deposition and assembly, affecting cell-substrate adhesion and cytoskeletal organization. Finally, an optimized CMD layer was chosen and proved to be as resistant as a poly(ethylene glycol) layer.
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Affiliation(s)
- Emmanuelle Monchaux
- Laboratoire de Bioingénierie et de Biophysique de l'Université de Sherbrooke, Department of Chemical Engineering, Université de Sherbrooke, 2500, Boulevard de l'Université, Sherbrooke, Québec, Canada, J1K 2R1
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Thompson M, Vadala T, Vadala M, Lin Y, Riffle J. Synthesis and applications of heterobifunctional poly(ethylene oxide) oligomers. POLYMER 2008. [DOI: 10.1016/j.polymer.2007.10.029] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Pasqui D, Atrei A, Barbucci R. A Novel Strategy To Obtain a Hyaluronan Monolayer on Solid Substrates. Biomacromolecules 2007; 8:3531-9. [DOI: 10.1021/bm700834d] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Murthy R, Cox CD, Hahn MS, Grunlan MA. Protein-Resistant Silicones: Incorporation of Poly(ethylene oxide) via Siloxane Tethers. Biomacromolecules 2007; 8:3244-52. [PMID: 17725363 DOI: 10.1021/bm700543c] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Silicones with enhanced protein resistance were prepared by introducing poly(ethylene oxide) (PEO) chains via siloxane tethers (a-c) of varying lengths. Three unique ambifunctional molecules (a-c) having the general formula alpha-(EtO)3Si(CH2)2-oligodimethylsiloxanen-block-poly(ethylene oxide)8-OCH3 (n = 0 (a), 4, (b), and 13 (c)) were prepared via regioselective Rh-catalyzed hydrosilylation. Nine films were subsequently produced by the H3PO4-catalyzed sol-gel cross-linking of a-c each with alpha,omega-bis(Si-OH)polydimethylsiloxane (P, Mn = 3000 g/mol) in varying ratios (1:1, 1:2, and 2:3 molar ratio a, b, or c to P). Films prepared with a 2:3 molar ratio (a-c to P) contained the least amount of un-cross-linked materials, which may migrate to the film surface. For this set of films, surface hydrophilicity and protein resistance increased with siloxane tether length (a-c). These results indicate that PEO was more effectively mobilized to the surface if incorporated into silicones via longer siloxane tethers.
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Affiliation(s)
- Ranjini Murthy
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843-3120, USA
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Satomi T, Nagasaki Y, Kobayashi H, Otsuka H, Kataoka K. Density control of poly(ethylene glycol) layer to regulate cellular attachment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:6698-703. [PMID: 17480105 DOI: 10.1021/la0624384] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
A wide variety of cells usually integrate and respond to the microscale environment, such as soluble protein factors, extracellular matrix proteins, and contacts with neighboring cells. To gain insight into cellular microenvironment design, we investigated two-dimensional microarray formation of endothelial cells on a micropatterned poly(ethylene glycol) (PEG)-brushed surface, based on the relationship between PEG chain density and cellular attachment. The patterned substrates consisted of two regions: the PEG surface that acts as a cell-resistant layer and the exposed substrate surface that promotes protein or cell adsorption. A PEG-brushed layer was constructed on a gold substrate using PEG with a mercapto group at the end of the chain. The density of the PEG-brushed layer increased substantially with repetitive adsorption/rinse cycles of PEG on the gold substrate, allowing marked reduction of nonspecific protein adsorption. These repeated adsorption/rinse cycles were further regulated by using longer (5 kDa) and shorter (2 kDa) PEG to construct PEG layers with different chain density, and subsequent micropatterning was achieved by plasma etching through a micropatterned metal mask. The effects of PEG chain density on pattern formation of cell attachment were determined on micropatterning of endothelial cells. The results indicated that cell pattern formation was strongly dependent on the PEG chain density and on the extent of protein adsorption. Notably, a PEG chain density high enough to inhibit outgrowth of endothelial cells from the cell-adhering region in the horizontal direction could be obtained only by employing formation of a short filler layer of PEG in the preconstructed longer PEG-brushed layer, which prevented nonspecific protein adsorption almost completely. In this way, a completely micropatterned array of endothelial cells with long-term viability was obtained. This clearly indicated the importance of a short underbrushed PEG layer in minimizing nonspecific protein adsorption for long-term maintenance of the active cell pattern. The strategy for cell patterning presented here can be employed in tissue engineering to study cell-cell and cell-surface interactions. It is also applicable for high-throughput screening and clinical diagnostics, as well as interfacing cellular and microfabricated components of biomedical microsystems.
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Affiliation(s)
- Tomomi Satomi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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Bosker WTE, Patzsch K, Stuart MAC, Norde W. Sweet brushes and dirty proteins. SOFT MATTER 2007; 3:754-762. [PMID: 32900139 DOI: 10.1039/b618259c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We studied the protein repellency of dextran brushes. Dextran was grafted to a polystyrene surface in a broad range of grafting densities using polystyrene-dextran block copolymers and the Langmuir-Blodgett deposition technique. Ellipsometry measurements confirmed a successful transfer of the dextran brush from the air-water interface to the polystyrene surface. Water contact-angle measurements validated the presence of the dextran layer at the surface. At grafting densities <0.20 nm, a heterogeneous dextran coating is detected with tapping mode AFM, consisting of aggregates of polystyrene-dextran and relatively large interstitial areas without dextran chains. This is probably due to surface micellization of the block copolymer in the Langmuir-Blodgett procedure. At grafting densities ≥0.20 nm, a homogeneous dextran brush is observed. Adsorption studies of BSA and trypsin, using optical reflectometry, showed that adsorbed amounts at the heterogeneous coating (<0.20 nm) is only slightly lower, if at all, than at the bare polystyrene surface. Beyond 0.20 nm, a drastic decrease in adsorbed amount was observed, due to excluded volume interactions between the protein and the homogeneous dextran brush. Almost complete protein repellency could be reached at high grafting densities. Comparison with adsorption studies of PEO brushes indicated that dextran brushes do not outperform PEO brushes in suppressing protein adsorption.
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Affiliation(s)
- Wouter T E Bosker
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB, Wageningen, The Netherlands
| | - Katja Patzsch
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB, Wageningen, The Netherlands and Downstream Processing, Institute for Bioengineering, Martin-Luther-University Halle-Wittenberg, Weinbergweg 22, 06120, Halle, Germany
| | - Martien A Cohen Stuart
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB, Wageningen, The Netherlands
| | - Willem Norde
- Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB, Wageningen, The Netherlands and Department of Biomedical Engineering, University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, The Netherlands
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Synthesis and Characterization of Sulfur Containing Dextran- and β-Cyclodextrin Derivatives. Polym Bull (Berl) 2007. [DOI: 10.1007/s00289-007-0749-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pallarola D, Domenianni L, Priano G, Battaglini F. A Protein-Resistant Matrix for Electrochemical Based Recognition Assays. ELECTROANAL 2007. [DOI: 10.1002/elan.200603801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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