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Pammi Guru KT, Praween N, Basu PK. Investigating the Electric Field Lysis of Exosomes Immobilized on the Screen-Printed Electrode and Electrochemical Sensing of the Lysed-Exosome-Derived Protein. BIOSENSORS 2023; 13:bios13030323. [PMID: 36979537 PMCID: PMC10046613 DOI: 10.3390/bios13030323] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 02/07/2023] [Accepted: 02/16/2023] [Indexed: 05/28/2023]
Abstract
It is important to isolate exosomes (<150 nm) from biofluid for diagnosis or prognosis purposes, followed by sensing of exosomal proteins. In the present work, exosomes are isolated from human serum by immobilizing on a Screen-Printed Electrode (SPE) followed by electric field lysis and electrochemical impedance spectroscopy (EIS)-based sensing of relevant exosomal proteins (HSP70 and HER2). Upon immobilization of exosomes on the surface, the role of different electrical signals (sinusoidal and square wave) in the lysis of exosomes was studied by varying the frequency and voltage. HSP70 was used for EIS to determine the optimal voltage and frequency for lysing the exosomes. It was observed that the low frequencies and, specifically, sinusoidal signals are ideal for lysing exosomes as compared to square signals. The relative quantity of HSP70 obtained by lysing with different voltages (sinusoidal waveform) was compared using Western blotting. After electric field lysis of the exosome with an optimized signal, HER2, a breast cancer biomarker, was detected successfully from serum by EIS. In the proposed technique, 3.5 × 108 exosomes/mL were isolated from serum. With the limit of detection of 10 pg, the designed cell showed a linear detection of HER2 from 0.1 ng to 1 µg. It was observed from the results that the electric field lysis of exosomes not only plays a significant role in releasing the cargo protein but also improves the sensing of surface proteins associated with exosomes.
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2
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Zhao Z, Pan M, Qiao C, Xiang L, Liu X, Yang W, Chen XZ, Zeng H. Bionic Engineered Protein Coating Boosting Anti-Biofouling in Complex Biological Fluids. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208824. [PMID: 36367362 DOI: 10.1002/adma.202208824] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Implantable medical devices have been widely applied in diagnostics, therapeutics, organ restoration, and other biomedical areas, but often suffer from dysfunction and infections due to irreversible biofouling. Inspired by the self-defensive "vine-thorn" structure of climbing thorny plants, a zwitterion-conjugated protein is engineered via grafting sulfobetaine methacrylate (SBMA) segments on native bovine serum albumin (BSA) protein molecules for surface coating and antifouling applications in complex biological fluids. Unlike traditional synthetic polymers of which the coating operation requires arduous surface pretreatments, the engineered protein BSA@PSBMA (PolySBMA conjugated BSA) can achieve facile and surface-independent coating on various substrates through a simple dipping/spraying method. Interfacial molecular force measurements and adsorption tests demonstrate that the substrate-foulant attraction is significantly suppressed due to strong interfacial hydration and steric repulsion of the bionic structure of BSA@PSBMA, enabling coating surfaces to exhibit superior resistance to biofouling for a broad spectrum of species including proteins, metabolites, cells, and biofluids under various biological conditions. This work provides an innovative paradigm of using native proteins to generate engineered proteins with extraordinary antifouling capability and desired surface properties for bioengineering applications.
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Affiliation(s)
- Ziqian Zhao
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Mingfei Pan
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Chenyu Qiao
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Li Xiang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
- School of Mechanical Engineering, Southeast University, Nanjing, Jiangsu, 211189, China
| | - Xiong Liu
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
| | - Wenshuai Yang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
| | - Xing-Zhen Chen
- Department of Physiology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2H7, Canada
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta, T6G 1H9, Canada
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3
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Chen J, Lv M, Su X, Wang S, Wang Y, Fan Z, Zhang L, Tang G. ICAM1-Targeting Theranostic Nanoparticles for Magnetic Resonance Imaging and Therapy of Triple-Negative Breast Cancer. Int J Nanomedicine 2022; 17:5605-5619. [PMID: 36444196 PMCID: PMC9700474 DOI: 10.2147/ijn.s374293] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 11/08/2022] [Indexed: 09/07/2023] Open
Abstract
Purpose Owing to the lack of effective biomarkers, triple-negative breast cancer (TNBC) has the worst prognosis among all subtypes of breast cancer. Meanwhile, tremendous progress has been made to identify biomarkers for TNBC. However, limited number of biomarkers still restrain the specifically targeting outcomes against TNBC. Here, to solve the obstacle, we designed and synthesized a new type of biocompatible nanoparticles to amplify the targeting effects for TNBC theranostics. Methods To identify the biomarker of TNBC, the expression of intercellular adhesion molecule-1 (ICAM1) was assessed by real-time polymerase chain reaction and western blot among all subtypes of breast cancer and normal breast epithelium. Then, vesicular nanoparticles based on poly(ethylene glycol)-poly(ε-caprolactone) copolymers were prepared by the double emulsion method and modified with anti-ICAM1 antibodies through click chemistry to conjugate with related antigens on TNBC cell membranes and then loaded with magnetic resonance imaging (MRI) contrast agent gadolinium and chemotherapeutic drug doxorubicin. The targeting capability, diagnostic and therapeutic efficacy of this nanoparticle were validated through cell-based and tumor model-based experiments. Results ICAM1 was expressed significantly higher on TNBC than on other subtypes of breast cancer and normal breast epithelium in both mRNA and protein level. Theranostic nanoparticle modified with anti-ICAM1 was proved to be able to specifically target to TNBC in vitro experiments. Such theranostic nanoparticle also displayed enhanced diagnostic and therapeutic efficacy by specifically targeting capability and extending circulation time in tumor models. The biocompatibility and biosafety of this nanoparticle was also confirmed in vitro and in vivo. Conclusion Overall, this new nanoparticle has been demonstrated with effective therapeutic outcomes against TNBC, providing a promising theranostic approach for MRI-guided therapy of TNBC.
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Affiliation(s)
- Jieying Chen
- Department of Radiology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Mingchen Lv
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai, People’s Republic of China
| | - Xiaolian Su
- Department of Radiology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Sizhu Wang
- Department of Radiology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Yitong Wang
- Department of Radiology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Zhen Fan
- Department of Polymeric Materials, School of Materials Science and Engineering, Tongji University, Shanghai, People’s Republic of China
- Institute for Advanced Study, Tongji University, Shanghai, China; Department of Orthopedics, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Lin Zhang
- Department of Radiology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
| | - Guangyu Tang
- Department of Radiology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, People’s Republic of China
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4
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Biomimetic functional material-based sensors for food safety analysis: a review. Food Chem 2022; 405:134974. [DOI: 10.1016/j.foodchem.2022.134974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 11/04/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022]
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5
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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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6
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Pan F, Aaron Lau KH, Messersmith PB, Lu JR, Zhao X. Interfacial Assembly Inspired by Marine Mussels and Antifouling Effects of Polypeptoids: A Neutron Reflection Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:12309-12318. [PMID: 32970448 PMCID: PMC7586401 DOI: 10.1021/acs.langmuir.0c02247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Polypeptoid-coated surfaces and many surface-grafted hydrophilic polymer brushes have been proven efficient in antifouling-the prevention of nonspecific biomolecular adsorption and cell attachment. Protein adsorption, in particular, is known to mediate subsequent cell-surface interactions. However, the detailed antifouling mechanism of polypeptoid and other polymer brush coatings at the molecular level is not well understood. Moreover, most adsorption studies focus only on measuring a single adsorbed mass value, and few techniques are capable of characterizing the hydrated in situ layer structure of either the antifouling coating or adsorbed proteins. In this study, interfacial assembly of polypeptoid brushes with different chain lengths has been investigated in situ using neutron reflection (NR). Consistent with past simulation results, NR revealed a common two-step structure for grafted polypeptoids consisting of a dense inner region that included a mussel adhesive-inspired oligopeptide for grafting polypeptoid chains and a highly hydrated upper region with very low polymer density (molecular brush). Protein adsorption was studied with human serum albumin (HSA) and fibrinogen (FIB), two common serum proteins of different sizes but similar isoelectric points (IEPs). In contrast to controls, we observed higher resistance by grafted polypeptoid against adsorption of the larger FIB, especially for longer chain lengths. Changing the pH to close to the IEPs of the proteins, which generally promotes adsorption, also did not significantly affect the antifouling effect against FIB, which was corroborated by atomic force microscopy imaging. Moreover, NR enabled characterization of the in situ hydrated layer structures of the polypeptoids together with proteins adsorbed under selected conditions. While adsorption on bare SiO2 controls resulted in surface-induced protein denaturation, this was not observed on polypeptoids. Our current results therefore highlight the detailed in situ view that NR may provide for characterizing protein adsorption on polymer brushes as well as the excellent antifouling behavior of polypeptoids.
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Affiliation(s)
- Fang Pan
- School
of Pharmacy, Changzhou University, Changzhou 213164, China
- School
of Physics & Astronomy, University of
Manchester, Manchester M13 9PL, U.K.
| | - King Hang Aaron Lau
- Department
of Pure & Applied Chemistry, University
of Strathclyde, Glasgow G1 1XL, U.K.
| | - Phillip B. Messersmith
- Department
of Materials Science and Engineering, Department of Bioengineering, University of California−Berkeley, Berkeley California 94720, United States
| | - Jian R. Lu
- School
of Physics & Astronomy, University of
Manchester, Manchester M13 9PL, U.K.
| | - Xiubo Zhao
- School
of Pharmacy, Changzhou University, Changzhou 213164, China
- Department
of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, U.K.
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7
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Polymer-coated nanoparticle protein corona formation potentiates phagocytosis of bacteria by innate immune cells and inhibits coagulation in human plasma. Biointerphases 2020; 15:051003. [DOI: 10.1116/6.0000385] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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8
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Kim J. Systematic approach to characterize the dynamics of protein adsorption on the surface of biomaterials using proteomics. Colloids Surf B Biointerfaces 2020; 188:110756. [DOI: 10.1016/j.colsurfb.2019.110756] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2019] [Revised: 12/03/2019] [Accepted: 12/23/2019] [Indexed: 01/08/2023]
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9
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Human plasma protein adsorption to elastin-like polypeptide nanoparticles. Biointerphases 2020; 15:021007. [DOI: 10.1116/6.0000027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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10
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Kang S, Kim J, Kim S, Wufuer M, Park S, Kim Y, Choi D, Jin X, Kim Y, Huang Y, Jeon B, Choi TH, Park JU, Lee Y. Efficient reduction of fibrous capsule formation around silicone breast implants densely grafted with 2-methacryloyloxyethyl phosphorylcholine (MPC) polymers by heat-induced polymerization. Biomater Sci 2020; 8:1580-1591. [DOI: 10.1039/c9bm01802f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This article presents the efficacy of heat-induced MPC-grafting against excessive fibrous capsule formation and related inflammation in tissues surrounding silicone breast implants inserted in a pig model.
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11
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Miller LM, Silver CD, Herman R, Duhme-Klair AK, Thomas GH, Krauss TF, Johnson SD. Surface-Bound Antibiotic for the Detection of β-Lactamases. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32599-32604. [PMID: 31449379 PMCID: PMC7007045 DOI: 10.1021/acsami.9b05793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 06/25/2019] [Indexed: 06/10/2023]
Abstract
Antimicrobial resistance (AMR) has been identified as a major threat to public health worldwide. To ensure appropriate use of existing antibiotics, rapid and reliable tests of AMR are necessary. One of the most common and clinically important forms of bacterial resistance is to β-lactam antibiotics (e.g., penicillin). This resistance is often caused by β-lactamases, which hydrolyze β-lactam drugs, rendering them ineffective. Current methods for detecting these enzymes require either time-consuming growth assays or antibiotic mimics such as nitrocefin. Here, we report the development of a surface-bound, clinically relevant β-lactam drug that can be used to detect β-lactamases and that is compatible with a range of high-sensitivity, low-cost, and label-free analytical techniques currently being developed for point-of-care-diagnostics. Furthermore, we demonstrate the use of these functionalized surfaces to selectively detect β-lactamases in complex biological media, such as urine.
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Affiliation(s)
- Lisa M. Miller
- Department
of Chemistry, Department of Electronic Engineering, Department of Biology, and Department of
Physics, University of York, Heslington YO10 5DD, U.K.
| | - Callum D. Silver
- Department
of Chemistry, Department of Electronic Engineering, Department of Biology, and Department of
Physics, University of York, Heslington YO10 5DD, U.K.
| | - Reyme Herman
- Department
of Chemistry, Department of Electronic Engineering, Department of Biology, and Department of
Physics, University of York, Heslington YO10 5DD, U.K.
| | - Anne-Kathrin Duhme-Klair
- Department
of Chemistry, Department of Electronic Engineering, Department of Biology, and Department of
Physics, University of York, Heslington YO10 5DD, U.K.
| | - Gavin H. Thomas
- Department
of Chemistry, Department of Electronic Engineering, Department of Biology, and Department of
Physics, University of York, Heslington YO10 5DD, U.K.
| | - Thomas F. Krauss
- Department
of Chemistry, Department of Electronic Engineering, Department of Biology, and Department of
Physics, University of York, Heslington YO10 5DD, U.K.
| | - Steven D. Johnson
- Department
of Chemistry, Department of Electronic Engineering, Department of Biology, and Department of
Physics, University of York, Heslington YO10 5DD, U.K.
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12
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Brash JL, Horbett TA, Latour RA, Tengvall P. The blood compatibility challenge. Part 2: Protein adsorption phenomena governing blood reactivity. Acta Biomater 2019; 94:11-24. [PMID: 31226477 PMCID: PMC6642842 DOI: 10.1016/j.actbio.2019.06.022] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/13/2019] [Indexed: 12/13/2022]
Abstract
The adsorption of proteins is the initiating event in the processes occurring when blood contacts a "foreign" surface in a medical device, leading inevitably to thrombus formation. Knowledge of protein adsorption in this context has accumulated over many years but remains fragmentary and incomplete. Moreover, the significance and relevance of the information for blood compatibility are not entirely agreed upon in the biomaterials research community. In this review, protein adsorption from blood is discussed under the headings "agreed upon" and "not agreed upon or not known" with respect to: protein layer composition, effects on coagulation and complement activation, effects on platelet adhesion and activation, protein conformational change and denaturation, prevention of nonspecific protein adsorption, and controlling/tailoring the protein layer composition. STATEMENT OF SIGNIFICANCE: This paper is part 2 of a series of 4 reviews discussing the problem of biomaterial associated thrombogenicity. The objective was to highlight features of broad agreement and provide commentary on those aspects of the problem that were subject to dispute. We hope that future investigators will update these reviews as new scholarship resolves the uncertainties of today.
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13
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Le TC, Penna M, Winkler DA, Yarovsky I. Quantitative design rules for protein-resistant surface coatings using machine learning. Sci Rep 2019; 9:265. [PMID: 30670792 PMCID: PMC6342937 DOI: 10.1038/s41598-018-36597-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 11/23/2018] [Indexed: 12/31/2022] Open
Abstract
Preventing biological contamination (biofouling) is key to successful development of novel surface and nanoparticle-based technologies in the manufacturing industry and biomedicine. Protein adsorption is a crucial mediator of the interactions at the bio - nano -materials interface but is not well understood. Although general, empirical rules have been developed to guide the design of protein-resistant surface coatings, they are still largely qualitative. Herein we demonstrate that this knowledge gap can be addressed by using machine learning approaches to extract quantitative relationships between the material surface chemistry and the protein adsorption characteristics. We illustrate how robust linear and non-linear models can be constructed to accurately predict the percentage of protein adsorbed onto these surfaces using lysozyme or fibrinogen as prototype common contaminants. Our computational models could recapitulate the adsorption of proteins on functionalised surfaces in a test set with an r2 of 0.82 and standard error of prediction of 13%. Using the same data set that enabled the development of the Whitesides rules, we discovered an extension to the original rules. We describe a workflow that can be applied to large, consistently obtained data sets covering a broad range of surface functional groups and protein types.
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Affiliation(s)
- Tu C Le
- School of Engineering, RMIT University, GPO Box 2476, Melbourne, Victoria, 3001, Australia.
| | - Matthew Penna
- School of Engineering, RMIT University, GPO Box 2476, Melbourne, Victoria, 3001, Australia
- ARC Industrial Transformation Research Hub for Australian Steel Manufacturing, Wollongong, NSW, 2522, Australia
| | - David A Winkler
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia
- La Trobe Institute for Molecular Science, La Trobe University, Bundoora, Victoria, 3084, Australia
- CSIRO Manufacturing, Clayton, Victoria, 3168, Australia
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Irene Yarovsky
- School of Engineering, RMIT University, GPO Box 2476, Melbourne, Victoria, 3001, Australia.
- ARC Industrial Transformation Research Hub for Australian Steel Manufacturing, Wollongong, NSW, 2522, Australia.
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14
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Lü X, Zhang H, Huang Y, Zhang Y. A proteomics study to explore the role of adsorbed serum proteins for PC12 cell adhesion and growth on chitosan and collagen/chitosan surfaces. Regen Biomater 2018; 5:261-273. [PMID: 30338124 PMCID: PMC6184651 DOI: 10.1093/rb/rby017] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 05/28/2018] [Accepted: 06/02/2018] [Indexed: 12/15/2022] Open
Abstract
The aim of this article is to apply proteomics in the comparison of the molecular mechanisms of PC12 cell adhesion and growth mediated by the adsorbed serum proteins on the surfaces of chitosan and collagen/chitosan films. First, the chitosan and the collagen/chitosan films were prepared by spin coating; and their surface morphologies were characterized by scanning electron microscopy, X-ray energy dispersive spectroscopy, contact angle measurement and Fourier transform infrared spectroscopy. Subsequently, cell proliferation experiments on two materials were performed and the dynamic curves of protein adsorption on their surfaces were measured. Then, proteomics and bioinformatics were used to analyze and compare the adsorbed serum proteins on the surfaces of two biomaterials; and their effects on cell adhesion were discussed. The results showed that the optimum concentration of chitosan film was 2% w/v. When compared with chitosan film, collagen/chitosan film promoted the growth and proliferation of PC12 cells more significantly. Although the dynamic curves showed no significant difference in the total amount of the adsorbed proteins on both surfaces, proteomics and bioinformatics analyses revealed a difference in protein types: the chitosan surface adsorbed more vitronectin whereas collagen/chitosan surface adsorbed more fibronectin 1 and contained more cell surface receptor binding sites and more Leu-Asp-Val sequences in its surface structure; the collagen/chitosan surface were more conducive to promoting cell adhesion and growth.
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Affiliation(s)
- Xiaoying Lü
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, P.R. China
| | - Heng Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, P.R. China
| | - Yan Huang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, P.R. China
| | - Yiwen Zhang
- SQ Medical Device Co., Ltd., Nanjing, P.R. China
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15
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Hydrophilic Self-Replenishing Coatings with Long-Term Water Stability for Anti-Fouling Applications. COATINGS 2018. [DOI: 10.3390/coatings8050184] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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16
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Ortiz R, Olsen S, Thormann E. Salt-Induced Control of the Grafting Density in Poly(ethylene glycol) Brush Layers by a Grafting-to Approach. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:4455-4464. [PMID: 29583002 DOI: 10.1021/acs.langmuir.8b00030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this work, a method to obtain control of the grafting density during the formation of polymer brush layers by the grafting-to method of thiolated poly(ethylene glycol) onto gold is presented. The grafting density of the polymer chains was adjusted by adding Na2SO4 in concentrations between 0.2 and 0.9 M to the aqueous polymer solution during the grafting process. The obtained grafting densities ranged from 0.26 to 1.60 chains nm-2, as determined by surface plasmon resonance. The kinetics of the grafting process were studied in situ by a quartz crystal microbalance with dissipation, and a mushroom to brush conformational transition was observed when the polymer was grafted in the presence of Na2SO4. The transition from mushroom to brush was only observed for long periods of grafting, highlighting the importance of time to obtain high grafting densities. Finally, the prepared brush layer with the highest grafting density showed high resistance to the adsorption of bovine serum albumin, while layers with a lower grafting density showed only limited resistance.
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Affiliation(s)
- Roberto Ortiz
- Department of Chemistry , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
| | | | - Esben Thormann
- Department of Chemistry , Technical University of Denmark , 2800 Kgs. Lyngby , Denmark
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17
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An omniphobic lubricant-infused coating produced by chemical vapor deposition of hydrophobic organosilanes attenuates clotting on catheter surfaces. Sci Rep 2017; 7:11639. [PMID: 28912558 PMCID: PMC5599680 DOI: 10.1038/s41598-017-12149-1] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 08/31/2017] [Indexed: 01/19/2023] Open
Abstract
Catheter associated thrombosis is an ongoing problem. Omniphobic coatings based on tethering biocompatible liquid lubricants on self-assembled monolayers of hydrophobic organosilanes attenuate clotting on surfaces. Herein we report an efficient, non-invasive and robust process for coating catheters with an antithrombotic, omniphobic lubricant-infused coating produced using chemical vapor deposition (CVD) of hydrophobic fluorine-based organosilanes. Compared with uncoated catheters, CVD coated catheters significantly attenuated thrombosis via the contact pathway of coagulation. When compared with the commonly used technique of liquid phase deposition (LPD) of fluorine-based organosilanes, the CVD method was more efficient and reproducible, resulted in less disruption of the outer polymeric layer of the catheters and produced greater antithrombotic activity. Therefore, omniphobic coating of catheters using the CVD method is a simple, straightforward and non-invasive procedure. This method has the potential to not only prevent catheter thrombosis, but also to prevent thrombosis on other blood-contacting medical devices.
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18
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Xu R, Zhao H, Muhammad H, Dong M, Besenbacher F, Chen M. Dual-delivery of FGF-2/CTGF from Silk Fibroin/PLCL-PEO Coaxial Fibers Enhances MSC Proliferation and Fibrogenesis. Sci Rep 2017; 7:8509. [PMID: 28819120 PMCID: PMC5561253 DOI: 10.1038/s41598-017-08226-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 07/10/2017] [Indexed: 02/04/2023] Open
Abstract
The success of mesenchymal stem cell transplantation is highly dependent on their survival and controlled fate regulation. This study demonstrates that dual-delivery of connective tissue growth factor (CTGF) and fibroblast growth factor 2 (FGF-2) from a core-shell fiber of Silk Fibroin/poly(L-lactic acid-co-ε-caprolactone)-polyethylene oxide (SF/PLCL-PEO) enhanced fibrogenic lineage differentiation of MSCs. The core-shell structure was confirmed by transmission electron microscopy (TEM), fluorescence microscopy and attenuated total reflection (ATR) Fourier transform infrared (FTIR) spectroscopy. A sequential release of FGF-2 and CTGF was successfully achieved in this manner. FGF-2 plays an important role in stem cell proliferation and, meanwhile when accompanied with CTGF, has a slightly additive effect on fibrogenic differentiation of MSCs, whereas CTGF promotes fibrogenesis and alleviates osteogenesis, chondrogenesis and adipogenesis.
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Affiliation(s)
- Ruodan Xu
- Department of Engineering, Aarhus University, DK-8000, Aarhus C, Denmark
| | - Huiling Zhao
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000, Aarhus C, Denmark
| | - Hanif Muhammad
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000, Aarhus C, Denmark
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000, Aarhus C, Denmark
| | - Flemming Besenbacher
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000, Aarhus C, Denmark
| | - Menglin Chen
- Department of Engineering, Aarhus University, DK-8000, Aarhus C, Denmark. .,Interdisciplinary Nanoscience Center (iNANO), Aarhus University, DK-8000, Aarhus C, Denmark.
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19
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Shui Y, Su Y, Kuang X, Zhao W, Cai Y, Wang D. Facile and controllable synthesis of hybrid silica nanoparticles densely grafted with poly(ethylene glycol). POLYM INT 2017. [DOI: 10.1002/pi.5391] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Yudan Shui
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry; Chinese Academy of Sciences; China
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou China
| | - Yunlan Su
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry; Chinese Academy of Sciences; China
| | - Xiao Kuang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry; Chinese Academy of Sciences; China
| | - Weiwei Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry; Chinese Academy of Sciences; China
| | - Yuanli Cai
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science; Soochow University; Suzhou China
| | - Dujin Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Engineering Plastics, Institute of Chemistry; Chinese Academy of Sciences; China
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20
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Chen WL, Cordero R, Tran H, Ober CK. 50th Anniversary Perspective: Polymer Brushes: Novel Surfaces for Future Materials. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00450] [Citation(s) in RCA: 296] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wei-Liang Chen
- Department of Materials Science & Engineering, ‡Smith School of Chemical and Biomolecular Engineering, and §Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Roselynn Cordero
- Department of Materials Science & Engineering, ‡Smith School of Chemical and Biomolecular Engineering, and §Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Hai Tran
- Department of Materials Science & Engineering, ‡Smith School of Chemical and Biomolecular Engineering, and §Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Christopher K. Ober
- Department of Materials Science & Engineering, ‡Smith School of Chemical and Biomolecular Engineering, and §Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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21
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Lee KT, Coffey JW, Robinson KJ, Muller DA, Grøndahl L, Kendall MAF, Young PR, Corrie SR. Investigating the Effect of Substrate Materials on Wearable Immunoassay Performance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:773-782. [PMID: 28006902 DOI: 10.1021/acs.langmuir.6b03933] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Immunoassays are ubiquitous across research and clinical laboratories, yet little attention is paid to the effect of the substrate material on the assay performance characteristics. Given the emerging interest in wearable immunoassay formats, investigations into substrate materials that provide an optimal mix of mechanical and bioanalytical properties are paramount. In the course of our research in developing wearable immunoassays which can penetrate skin to selectively capture disease antigens from the underlying blood vessels, we recently identified significant differences in immunoassay performance between gold and polycarbonate surfaces, even with a consistent surface modification procedure. We observed significant differences in PEG density, antibody immobilization, and nonspecific adsorption between the two substrates. Despite a higher PEG density formed on gold-coated surfaces than on amine-functionalized polycarbonate, the latter revealed a higher immobilized capture antibody density and lower nonspecific adsorption, leading to improved signal-to-noise ratios and assay sensitivities. The major conclusion from this study is that in designing wearable bioassays or biosensors, the design and its effect on the antifouling polymer layer can significantly affect the assay performance in terms of analytical specificity and sensitivity.
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Affiliation(s)
| | | | | | | | | | - Mark A F Kendall
- Australian Infectious Diseases Research Centre, St. Lucia, Queensland 4067, Australia
- Faculty of Medicine and Biomedical Sciences, Royal Brisbane and Women's Hospital , Herston, Queensland 4029, Australia
| | - Paul R Young
- Australian Infectious Diseases Research Centre, St. Lucia, Queensland 4067, Australia
| | - Simon R Corrie
- Australian Infectious Diseases Research Centre, St. Lucia, Queensland 4067, Australia
- Department of Chemical Engineering, ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Monash University , Clayton, Victoria 3800, Australia
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22
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Leclercq L, Vert M. Comparison between protein repulsions by diblock PLA-PEO and albumin nanocoatings using OWLS. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 28:177-193. [DOI: 10.1080/09205063.2016.1262160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Laurent Leclercq
- Faculty of Pharmacy, IBMM-UMR CNRS 5247, University of Montpellier – CNRS, Montpellier Cedex 5, France
| | - Michel Vert
- Faculty of Pharmacy, IBMM-UMR CNRS 5247, University of Montpellier – CNRS, Montpellier Cedex 5, France
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23
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Vaisocherová-Lísalová H, Surman F, Víšová I, Vala M, Špringer T, Ermini ML, Šípová H, Šedivák P, Houska M, Riedel T, Pop-Georgievski O, Brynda E, Homola J. Copolymer Brush-Based Ultralow-Fouling Biorecognition Surface Platform for Food Safety. Anal Chem 2016; 88:10533-10539. [PMID: 27689386 DOI: 10.1021/acs.analchem.6b02617] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Functional polymer coatings that combine the ability to resist nonspecific fouling from complex media with high biorecognition element (BRE) immobilization capacity represent an emerging class of new functional materials for a number of bioanalytical and biosensor technologies for medical diagnostics, security, and food safety. Here, we report on a random copolymer brush surface - poly(CBMAA-ran-HPMAA) - providing high BRE immobilization capacity while simultaneously exhibiting ultralow-fouling behavior in complex food media. We demonstrate that both the functionalization and fouling resistance capabilities of such copolymer brushes can be tuned by changing the surface contents of the two monomer units: nonionic N-(2-hydroxypropyl) methacrylamide (HPMAA) and carboxy-functional zwitterionic carboxybetaine methacrylamide (CBMAA). It is demonstrated that the resistance to fouling decreases with the surface content of CBMAA; poly(CBMAA-ran-HPMAA) brushes with CBMAA molar content up to 15 mol % maintain excellent resistance to fouling from a variety of homogenized foods (hamburger, cucumber, milk, and lettuce) even after covalent attachment of BREs to carboxy groups of CBMAA. The poly(CBMAA 15 mol %-ran-HPMAA) brushes functionalized with antibodies are demonstrated to exhibit fouling resistance from food samples by up to 3 orders of magnitude better when compared with the widely used low-fouling carboxy-functional oligo(ethylene glycol) (OEG)-based alkanethiolate self-assembled monolayers (AT SAMs) and, furthermore, by up to 2 orders of magnitude better when compared with the most successful ultralow-fouling biorecognition coatings - poly(carboxybetaine acrylamide), poly(CBAA). When model SPR detections of food-borne bacterial pathogens in homogenized foods are used, it is also demonstrated that the antibody-functionalized poly(CBMAA 15 mol %-ran-HPMAA) brush exhibits superior biorecognition properties over the poly(CBAA).
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Affiliation(s)
- Hana Vaisocherová-Lísalová
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague, Czech Republic
| | - František Surman
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague, Czech Republic
| | - Ivana Víšová
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague, Czech Republic
| | - Milan Vala
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague, Czech Republic
| | - Tomáš Špringer
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague, Czech Republic
| | - Maria Laura Ermini
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague, Czech Republic
| | - Hana Šípová
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague, Czech Republic
| | - Petr Šedivák
- Police of the Czech Republic , Kapucínská 214/2, Prague, Czech Republic
| | - Milan Houska
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague, Czech Republic
| | - Tomáš Riedel
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague, Czech Republic
| | - Ognen Pop-Georgievski
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague, Czech Republic
| | - Eduard Brynda
- Institute of Macromolecular Chemistry, Czech Academy of Sciences , Heyrovského nám. 2, Prague, Czech Republic
| | - Jiří Homola
- Institute of Photonics and Electronics, Czech Academy of Sciences , Chaberská 57, Prague, Czech Republic
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24
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Han Y, Jin J, Cui J, Jiang W. Effect of hydrophilicity of end-grafted polymers on protein adsorption behavior: A Monte Carlo study. Colloids Surf B Biointerfaces 2016; 142:38-45. [DOI: 10.1016/j.colsurfb.2016.01.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 01/05/2016] [Accepted: 01/30/2016] [Indexed: 01/01/2023]
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25
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Harrison E, Coulter JA, Dixon D. Gold nanoparticle surface functionalization: mixed monolayer versus hetero bifunctional peg linker. Nanomedicine (Lond) 2016; 11:851-65. [DOI: 10.2217/nnm.16.28] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
To create a clinically relevant gold nanoparticle (AuNP) treatment, the surface must be functionalized with multiple ligands such as drugs, antifouling agents and targeting moieties. However, attaching several ligands of differing chemistries and lengths, while ensuring they all retain their biological functionality remains a challenge. This review compares the two most widely employed methods of surface co-functionalization, namely mixed monolayers and hetero-bifunctional linkers. While there are numerous in vitro studies successfully utilizing both surface arrangements, there is little consensus regarding their relative merits. Animal and preclinical studies have demonstrated the effectiveness of mixed monolayer functionalization and while some promising in vitro results have been reported for PEG linker capped AuNPs, any potential benefits of the approach are not yet fully understood.
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Affiliation(s)
- Emma Harrison
- Nanotechnology & Integrated BioEngineering Centre, University of Ulster, Belfast, Northern Ireland
| | - Jonathan A Coulter
- School of Pharmacy, Queens University Belfast, Belfast, Northern Ireland
| | - Dorian Dixon
- Nanotechnology & Integrated BioEngineering Centre, University of Ulster, Belfast, Northern Ireland
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26
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de los Santos Pereira A, Sheikh S, Blaszykowski C, Pop-Georgievski O, Fedorov K, Thompson M, Rodriguez-Emmenegger C. Antifouling Polymer Brushes Displaying Antithrombogenic Surface Properties. Biomacromolecules 2016; 17:1179-85. [DOI: 10.1021/acs.biomac.6b00019] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Andres de los Santos Pereira
- Department
of Chemistry and Physics of Surfaces and Biointerfaces, Institute
of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Square 2, 162 06 Prague, Czech Republic
| | - Sonia Sheikh
- Department
of Chemistry − St. George Campus, University of Toronto, 80 St. George Street, Toronto, Ontario Canada M5S 3H6
| | | | - Ognen Pop-Georgievski
- Department
of Chemistry and Physics of Surfaces and Biointerfaces, Institute
of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Square 2, 162 06 Prague, Czech Republic
| | - Kiril Fedorov
- Institute of Biomaterials & Biomedical Engineering, 164 College Street, University of Toronto, Toronto, Ontario Canada M5S 3G9
| | - Michael Thompson
- Department
of Chemistry − St. George Campus, University of Toronto, 80 St. George Street, Toronto, Ontario Canada M5S 3H6
| | - Cesar Rodriguez-Emmenegger
- Department
of Chemistry and Physics of Surfaces and Biointerfaces, Institute
of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Square 2, 162 06 Prague, Czech Republic
- DWI
− Leibniz Institute for Interactive Materials and Institute
of Technical and Macromolecular Chemistry, RWTH Aachen University, Forckenbeckstraße 50, 52074 Aachen, Germany
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27
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Hodgson SM, Bakaic E, Stewart SA, Hoare T, Adronov A. Properties of Poly(ethylene glycol) Hydrogels Cross-Linked via Strain-Promoted Alkyne-Azide Cycloaddition (SPAAC). Biomacromolecules 2016; 17:1093-100. [PMID: 26842783 DOI: 10.1021/acs.biomac.5b01711] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A series of poly(ethylene glycol) (PEG) hydrogels was synthesized using strain-promoted alkyne-azide cycloaddition (SPAAC) between PEG chains terminated with either aza-dibenzocyclooctynes or azide functionalities. The gelation process was found to occur rapidly upon mixing the two components in aqueous solution without the need for external stimuli or catalysts, making the system a candidate for use as an injectable hydrogel. The mechanical and rheological properties of these hydrogels were found to be tunable by varying the polymer molecular weight and the number of cross-linking groups per chain. The gelation times of these hydrogels ranged from 10 to 60 s at room temperature. The mass-based swelling ratios varied from 45 to 76 at maximum swelling (relative to the dry state), while the weight percent of polymer in these hydrogels ranged from 1.31 to 2.05%, demonstrating the variations in amount of polymer required to maintain the structural integrity of the gel. Each hydrogel degraded at a different rate in PBS at pH = 7.4, with degradation times ranging from 1 to 35 days. By changing the composition of the two starting components, it was found that the Young's modulus of each hydrogel could be varied from 1 to 18 kPa. Hydrogel incubation with bovine serum albumin showed minimal protein adsorption. Finally, a cell cytotoxicity study of the precursor polymers with 3T3 fibroblasts demonstrated that the azide- and strained alkyne-functionalized PEGs are noncytotoxic.
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Affiliation(s)
- Sabrina M Hodgson
- Department of Chemistry and Chemical Biology McMaster University 1280 Main St. W. Hamilton, ON L8S 4M1, Canada
| | - Emilia Bakaic
- Department of Chemical Engineering McMaster University 1280 Main St. W. Hamilton, ON L8S 4L7, Canada
| | - S Alison Stewart
- Department of Chemistry and Chemical Biology McMaster University 1280 Main St. W. Hamilton, ON L8S 4M1, Canada
| | - Todd Hoare
- Department of Chemical Engineering McMaster University 1280 Main St. W. Hamilton, ON L8S 4L7, Canada
| | - Alex Adronov
- Department of Chemistry and Chemical Biology McMaster University 1280 Main St. W. Hamilton, ON L8S 4M1, Canada
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28
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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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29
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Terekhin VV, Senchikhin IN, Dement’eva OV, Rudoy VM. Conjugates of gold nanoparticles and poly(ethylene glycol): Formation in hydrosol, direct transfer to organic medium, and stability of organosols. COLLOID JOURNAL 2015. [DOI: 10.1134/s1061933x15040183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Emilsson G, Schoch RL, Feuz L, Höök F, Lim RYH, Dahlin AB. Strongly stretched protein resistant poly(ethylene glycol) brushes prepared by grafting-to. ACS APPLIED MATERIALS & INTERFACES 2015; 7:7505-15. [PMID: 25812004 DOI: 10.1021/acsami.5b01590] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We present a new grafting-to method for resistant "non-fouling" poly(ethylene glycol) brushes, which is based on grafting of polymers with reactive end groups in 0.9 M Na2SO4 at room temperature. The grafting process, the resulting brushes, and the resistance toward biomolecular adsorption are investigated by surface plasmon resonance, quartz crystal microbalance, and atomic force microscopy. We determine both grafting density and thickness independently and use narrow molecular weight distributions which result in well-defined brushes. High density (e.g., 0.4 coils per nm(2) for 10 kDa) and thick (40 nm for 20 kDa) brushes are readily achieved that suppress adsorption from complete serum (10× dilution, exposure for 50 min) by up to 99% on gold (down to 4 ng/cm(2) protein coverage). The brushes outperform oligo(ethylene glycol) monolayers prepared on the same surfaces and analyzed in the same manner. The brush heights are in agreement with calculations based on a simple model similar to the de Gennes "strongly stretched" brush, where the height is proportional to molecular weight. This result has so far generally been considered to be possible only for brushes prepared by grafting-from. Our results are consistent with the theory that the brushes act as kinetic barriers rather than efficient prevention of adsorption at equilibrium. We suggest that the free energy barrier for passing the brush depends on both monomer concentration and thickness. The extraordinary simplicity of the method and good inert properties of the brushes should make our results widely applicable in biointerface science.
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Affiliation(s)
- Gustav Emilsson
- †Department of Applied Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
| | - Rafael L Schoch
- ‡Biozentrum and the Swiss Nanoscience Institute, University of Basel, 4056 Basel, Switzerland
| | | | - Fredrik Höök
- †Department of Applied Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
| | - Roderick Y H Lim
- ‡Biozentrum and the Swiss Nanoscience Institute, University of Basel, 4056 Basel, Switzerland
| | - Andreas B Dahlin
- †Department of Applied Physics, Chalmers University of Technology, 41296 Göteborg, Sweden
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31
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Functionalizable low-fouling coatings for label-free biosensing in complex biological media: advances and applications. Anal Bioanal Chem 2015; 407:3927-53. [DOI: 10.1007/s00216-015-8606-5] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 02/20/2015] [Accepted: 02/27/2015] [Indexed: 12/31/2022]
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32
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Taylor W, Ebbens S, Skoda MWA, Webster JRP, Jones RAL. Mode of lysozyme protein adsorption at end-tethered polyethylene oxide brushes on gold surfaces determined by neutron reflectivity. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2015; 38:14. [PMID: 25743024 DOI: 10.1140/epje/i2015-15014-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 08/20/2014] [Accepted: 02/03/2015] [Indexed: 06/04/2023]
Abstract
The mode of lysozyme protein adsorption at end-tethered thiol-terminated polyethylene oxide brushes grafted upon gold was determined in situ by neutron reflectivity using the INTER instrument at target station 2, ISIS, RAL, UK. It was found that the most probable position of protein adsorption at these weakly protein resistive brushes was at the gold-brush interface in the so-called primary protein position.
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Affiliation(s)
- Warren Taylor
- Physics and Astronomy Department, University of Sheffield, Sheffield, UK,
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33
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Safaei Nikouei N, Vakili MR, Bahniuk MS, Unsworth L, Akbari A, Wu J, Lavasanifar A. Thermoreversible hydrogels based on triblock copolymers of poly(ethylene glycol) and carboxyl functionalized poly(ε-caprolactone): The effect of carboxyl group substitution on the transition temperature and biocompatibility in plasma. Acta Biomater 2015; 12:81-92. [PMID: 25451305 DOI: 10.1016/j.actbio.2014.10.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/15/2014] [Accepted: 10/01/2014] [Indexed: 12/31/2022]
Abstract
In this study we report on the development, characterization and plasma protein interaction of novel thermoresponsive in situ hydrogels based on triblock copolymers of poly(ethylene glycol) (PEG) and poly(α-carboxyl-co-benzyl carboxylate)-ε-caprolactone (PCBCL) having two different degrees of carboxyl group substitution on the PCBCL block. Block copolymers were synthesized through ring-opening polymerization of α-benzyl carboxylate-ε-caprolactone by dihydroxy PEG, leading to the production of poly(α-benzyl carboxylate-ε-caprolactone)-PEG-poly(α-benzyl carboxylate-ε-caprolactone) (PBCL-PEG-PBCL). This was followed by partial debenzylation of PBCL blocks under controlled conditions, leading to the preparation of PCBCL-PEG-PCBCL triblock copolymers with 30 and 54mol.% carboxyl group substitution. Prepared PCBCL-PEG-PCBCL block copolymers have been shown to have a concentration-dependent sol to gel transition as a result of an increase in temperature above ∼29°C, as evidenced by the inverse flow method, differential scanning calorimetry and dynamic mechanical analysis. The sol-gel transition temperature/concentration and dynamic mechanical properties of the gel were found to be dependent on the level of carboxyl group substitution. Both hydrogels (30 and 54mol.% carboxyl group substitution) showed similar amounts of protein adsorption but striking differences in the profiles of the adsorbed proteome. Additionally, the two systems showed similarities in their clot formation kinetics but substantial differences in clot endpoints. The results show great promise for the above-mentioned thermoreversible in situ hydrogels as biocompatible materials for biomedical applications.
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34
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Delcroix MF, Laurent S, Huet GL, Dupont-Gillain CC. Protein adsorption can be reversibly switched on and off on mixed PEO/PAA brushes. Acta Biomater 2015; 11:68-79. [PMID: 25234158 DOI: 10.1016/j.actbio.2014.09.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 09/04/2014] [Accepted: 09/09/2014] [Indexed: 12/25/2022]
Abstract
Adsorption of proteins on surfaces placed in biological fluids is a ubiquitous and mostly irreversible phenomenon, desirable or not, but often uncontrolled. Adsorption of most proteins on poly(ethylene oxide) (PEO) brushes is very limited, while the amount of proteins adsorbed on poly(acrylic acid) (PAA) brushes varies with the pH and ionic strength (I) of the protein solution. Mixed brushes of PEO and PAA are designed here to reversibly adsorb and desorb albumin, lysozyme, collagen and immunoglobulin G, four very different proteins in terms of size, solubility and isoelectric point. Protein adsorption and desorption are monitored using X-ray photoelectron spectroscopy, as well as with quartz crystal microbalance for in situ and real-time measurements. Large amounts of protein are adsorbed and then nearly completely desorbed on mixed PEO/PAA brushes by a simple pH and I trigger. The mixed brushes thus nicely combine the properties of pure PAA and pure PEO brushes. These adsorption/desorption cycles are shown to be repeated with high efficiency. The high-performance smart substrates created here could find applications in domains as diverse as biosensors, drug delivery and nanotransport.
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Affiliation(s)
- M F Delcroix
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Croix du Sud 1 (L7.04.01), 1348 Louvain-la-Neuve, Belgium
| | - S Laurent
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Croix du Sud 1 (L7.04.01), 1348 Louvain-la-Neuve, Belgium
| | - G L Huet
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Croix du Sud 1 (L7.04.01), 1348 Louvain-la-Neuve, Belgium
| | - C C Dupont-Gillain
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Croix du Sud 1 (L7.04.01), 1348 Louvain-la-Neuve, Belgium.
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35
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Parisi OI, Morelli C, Scrivano L, Sinicropi MS, Cesario MG, Candamano S, Puoci F, Sisci D. Controlled release of sunitinib in targeted cancer therapy: smart magnetically responsive hydrogels as restricted access materials. RSC Adv 2015. [DOI: 10.1039/c5ra12229e] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A magnetic hydrogel prepared by precipitation polymerization, with restricted access material (RAM) characteristics through the introduction of glycidyl methacrylate, for sunitinib malate release.
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Affiliation(s)
- Ortensia Ilaria Parisi
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- 87036 Rende (CS)
- Italy
| | - Catia Morelli
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- 87036 Rende (CS)
- Italy
| | - Luca Scrivano
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- 87036 Rende (CS)
- Italy
| | - Maria Stefania Sinicropi
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- 87036 Rende (CS)
- Italy
| | - Maria Grazia Cesario
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- 87036 Rende (CS)
- Italy
| | - Sebastiano Candamano
- Department of Environmental and Chemical Engineering
- University of Calabria
- 87036 Rende (CS)
- Italy
| | - Francesco Puoci
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- 87036 Rende (CS)
- Italy
| | - Diego Sisci
- Department of Pharmacy
- Health and Nutritional Sciences
- University of Calabria
- 87036 Rende (CS)
- Italy
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36
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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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37
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Moore E, Delalat B, Vasani R, McPhee G, Thissen H, Voelcker NH. Surface-initiated hyperbranched polyglycerol as an ultralow-fouling coating on glass, silicon, and porous silicon substrates. ACS APPLIED MATERIALS & INTERFACES 2014; 6:15243-15252. [PMID: 25137525 DOI: 10.1021/am503570v] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Anionic ring-opening polymerization of glycidol was initiated from activated glass, silicon, and porous silicon substrates to yield thin, ultralow-fouling hyperbranched polyglycerol (HPG) graft polymer coatings. Substrates were activated by deprotonation of surface-bound silanol functionalities. HPG polymerization was initiated upon the addition of freshly distilled glycidol to yield films in the nanometer thickness range. X-ray photoelectron spectroscopy, contact angle measurements, and ellipsometry were used to characterize the resulting coatings. The antifouling properties of HPG-coated surfaces were evaluated in terms of protein adsorption and the attachment of mammalian cells. The adsorption of bovine serum albumin and collagen type I was found to be reduced by as much as 97 and 91%, respectively, in comparison to untreated surfaces. Human glioblastoma and mouse fibroblast attachment was reduced by 99 and 98%, respectively. HPG-grafted substrates outperformed polyethylene glycol (PEG) grafted substrates of comparable thickness under the same incubation conditions. Our results demonstrate the effectiveness of antifouling HPG graft polymer coatings on a selected range of substrate materials and open the door for their use in biomedical applications.
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Affiliation(s)
- Eli Moore
- ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Mawson Institute, University of South Australia , GPO Box 2471, Adelaide, South Australia 5001, Australia
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38
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Liu X, Yuan L, Li D, Tang Z, Wang Y, Chen G, Chen H, Brash JL. Blood compatible materials: state of the art. J Mater Chem B 2014; 2:5718-5738. [PMID: 32262016 DOI: 10.1039/c4tb00881b] [Citation(s) in RCA: 189] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Devices that function in contact with blood are ubiquitous in clinical medicine and biotechnology. These devices include vascular grafts, coronary stents, heart valves, catheters, hemodialysers, heart-lung bypass systems and many others. Blood contact generally leads to thrombosis (among other adverse outcomes), and no material has yet been developed which remains thrombus-free indefinitely and in all situations: extracorporeally, in the venous circulation and in the arterial circulation. In this article knowledge on blood-material interactions and "thromboresistant" materials is reviewed. Current approaches to the development of thromboresistant materials are discussed including surface passivation; incorporation and/or release of anticoagulants, antiplatelet agents and thrombolytic agents; and mimicry of the vascular endothelium.
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Affiliation(s)
- Xiaoli Liu
- The Key Lab of Health Chemistry and Molecular Diagnosis of Suzhou, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China.
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39
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Zhou Z, Calabrese DR, Taylor W, Finlay JA, Callow ME, Callow JA, Fischer D, Kramer EJ, Ober CK. Amphiphilic triblock copolymers with PEGylated hydrocarbon structures as environmentally friendly marine antifouling and fouling-release coatings. BIOFOULING 2014; 30:589-604. [PMID: 24730510 DOI: 10.1080/08927014.2014.897335] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The ideal marine antifouling (AF)/fouling-release (FR) coating should be non-toxic, while effectively either resisting the attachment of marine organisms (AF) or significantly reducing their strength of attachment (FR). Many recent studies have shown that amphiphilic polymeric materials provide a promising solution to producing such coatings due to their surface dual functionality. In this work, poly(ethylene glycol) (PEG) of different molecular weights (Mw = 350, 550) was coupled to a saturated difunctional alkyl alcohol to generate amphiphilic surfactants (PEG-hydrocarbon-OH). The resulting macromolecules were then used as side chains to covalently modify a pre-synthesized PS8 K-b-P(E/B)25 K-b-PI10 K (SEBI or K3) triblock copolymer, and the final polymers were applied to glass substrata through an established multilayer surface coating technique to prepare fouling resistant coatings. The coated surfaces were characterized with AFM, XPS and NEXAFS, and evaluated in laboratory assays with two important fouling algae, Ulva linza (a green macroalga) and Navicula incerta, a biofilm-forming diatom. The results suggest that these polymer-coated surfaces undergo surface reconstruction upon changing the contact medium (polymer/air vs polymer/water), due to the preferential interfacial aggregation of the PEG segment on the surface in water. The amphiphilic polymer-coated surfaces showed promising results as both AF and FR coatings. The sample with longer PEG chain lengths (Mw = 550 g mol(-1)) exhibited excellent properties against both algae, highlighting the importance of the chemical structures on ultimate biological performance. Besides reporting synthesis and characterization of this new type of amphiphilic surface material, this work also provides insight into the nature of PEG/hydrocarbon amphiphilic coatings, and this understanding may help in the design of future generations of fluorine-free, environmentally friendly AF/FR polymeric coatings.
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Affiliation(s)
- Zhaoli Zhou
- a Department of Chemistry and Chemical Biology , Cornell University , Ithaca , New York 14853 , USA
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40
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Dargahi M, Omanovic S. A comparative PM-IRRAS and ellipsometry study of the adsorptive behaviour of bovine serum albumin on a gold surface. Colloids Surf B Biointerfaces 2014; 116:383-8. [DOI: 10.1016/j.colsurfb.2013.12.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 12/12/2013] [Accepted: 12/16/2013] [Indexed: 10/25/2022]
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41
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Auxier JA, Dill JK, Schilke KF, McGuire J. Blood protein repulsion after peptide entrapment in pendant polyethylene oxide layers. Biotechnol Appl Biochem 2014; 61:371-5. [DOI: 10.1002/bab.1201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 12/22/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Julie A. Auxier
- School of Chemical, Biological and Environmental Engineering; Oregon State University; Corvallis OR USA
| | - Justen K. Dill
- School of Chemical, Biological and Environmental Engineering; Oregon State University; Corvallis OR USA
| | - Karl F. Schilke
- School of Chemical, Biological and Environmental Engineering; Oregon State University; Corvallis OR USA
| | - Joseph McGuire
- School of Chemical, Biological and Environmental Engineering; Oregon State University; Corvallis OR USA
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42
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Functionalized ultra-low fouling carboxy- and hydroxy-functional surface platforms: functionalization capacity, biorecognition capability and resistance to fouling from undiluted biological media. Biosens Bioelectron 2014; 51:150-7. [DOI: 10.1016/j.bios.2013.07.015] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 07/05/2013] [Accepted: 07/09/2013] [Indexed: 01/05/2023]
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43
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Hu Y, Jin J, Han Y, Yin J, Jiang W, Liang H. Study of fibrinogen adsorption on poly(ethylene glycol)-modified surfaces using a quartz crystal microbalance with dissipation and a dual polarization interferometry. RSC Adv 2014. [DOI: 10.1039/c3ra46934d] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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44
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Heintz K, Schilke KF, Snider J, Lee WK, Truong M, Coblyn M, Jovanovic G, McGuire J. Preparation and evaluation of PEO-coated materials for a microchannel hemodialyzer. J Biomed Mater Res B Appl Biomater 2013; 102:1014-20. [DOI: 10.1002/jbm.b.33082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 08/14/2013] [Accepted: 11/19/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Keely Heintz
- School of Chemical, Biological and Environmental Engineering, Oregon State University; Corvallis Oregon 97331
| | - Karl F. Schilke
- School of Chemical, Biological and Environmental Engineering, Oregon State University; Corvallis Oregon 97331
| | - Joshua Snider
- School of Chemical, Biological and Environmental Engineering, Oregon State University; Corvallis Oregon 97331
| | - Woo-Kul Lee
- School of Chemical, Biological and Environmental Engineering, Oregon State University; Corvallis Oregon 97331
| | - Mitchell Truong
- School of Chemical, Biological and Environmental Engineering, Oregon State University; Corvallis Oregon 97331
| | - Matthew Coblyn
- School of Chemical, Biological and Environmental Engineering, Oregon State University; Corvallis Oregon 97331
| | - Goran Jovanovic
- School of Chemical, Biological and Environmental Engineering, Oregon State University; Corvallis Oregon 97331
| | - Joseph McGuire
- School of Chemical, Biological and Environmental Engineering, Oregon State University; Corvallis Oregon 97331
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45
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Li Z, Köwitsch A, Zhou G, Groth T, Fuhrmann B, Niepel M, Amado E, Kressler J. Enantiopure chiral poly(glycerol methacrylate) self-assembled monolayers knock down protein adsorption and cell adhesion. Adv Healthc Mater 2013; 2:1377-87. [PMID: 23526806 DOI: 10.1002/adhm.201200402] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 12/17/2012] [Indexed: 12/25/2022]
Abstract
Chirality plays a fundamental role not only in biological systems, but also in synthetic materials intended for bio-applications. Self-assembled monolayers (SAMs) are prepared on gold surfaces through a "grafting to" method from racemic or enantiopure chiral poly(glycerol methacrylate)s (PGMA(rac), PGMA(R), and PGMA(S)), having a thiol endgroup. Such SAMs constitute a chemically and structurally well-defined model substrate for studying protein adsorption and cell adhesion as a function of the polymer chirality. Surface plasmon resonance measurements reveal that PGMA SAMs greatly reduce the adsorption of bovine serum albumin (BSA) compared to bare gold surfaces. Interestingly, enantiopure SAMs based on PGMA(R) or PGMA(S) show a significantly larger reduction in BSA adsorption than PGMA(rac)-covered surfaces. Studies with the monocytic cell line THP-1 show a similar relationship between enantiopurity of PGMA SAMs and the extent of cell adhesion. Ellipsometry and Raman spectroscopy measurements indicate that SAMs formed by PGMA(rac) have a higher grafting density compared to SAMs of PGMA(R) and PGMA(S). This seems to be due to the ability of PGMA(rac) to form more intermolecular hydrogen bonds among polymer chains compared to the enantiopure PGMAs. Circular dichroism spectroscopy provide evidence that enantiopure polymers adopt a chiral ordered conformation, most likely helical, in aqueous solutions. It is concluded that a higher water content of SAMs formed by enantiopure PGMA(S) and PGMA(R) SAMs arises from the macromolecular chiral conformation adopted by their enantiopure PGMA chains, and it is the decisive reason for the reduced BSA adsorption and cell adhesion as compared to PGMA(rac) SAMs.
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Affiliation(s)
- Zheng Li
- Department of Chemistry, Martin Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, D-06099 Halle (Saale), Germany
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46
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Taylor W, Jones RAL. Protein adsorption on well-characterized polyethylene oxide brushes on gold: dependence on molecular weight and grafting density. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:6116-6122. [PMID: 23617308 DOI: 10.1021/la4005483] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The adsorption of lysozyme protein was measured ex situ on well-characterized gold surfaces coated by end-tethered polyethylene oxide brushes of various molecular weights and controlled grafting densities. The adsorbed amount of protein for different molecular weight brushes was found to collapse onto one master curve when plotted against brush coverage. We interpret this relationship in terms of a model involving site-blocking of the adsorption of proteins at the substrate and discuss the role of the physical attraction of PEO segments to gold. We account for our observation of a simple exponential relationship between protein adsorption and normalized brush coverage with a simple protein adsorption model. In contrast to other studies in similar systems, we do not observe protein adsorption on brushes at high grafting density, and we suggest that this discrepancy may be due to the solubility effects of salt upon the brushes, influencing their protein binding affinity, in the limit of high grafting density and high brush volume fraction.
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Affiliation(s)
- Warren Taylor
- Materials Research Laboratory, University of California, Santa Barbara, California 93106-5121, United States.
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47
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Riedel T, Riedelová-Reicheltová Z, Májek P, Rodriguez-Emmenegger C, Houska M, Dyr JE, Brynda E. Complete identification of proteins responsible for human blood plasma fouling on poly(ethylene glycol)-based surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:3388-3397. [PMID: 23391268 DOI: 10.1021/la304886r] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The resistance of poly(ethylene glycol) (PEG) against protein adsorption is crucial and has been widely utilized in various biomedical applications. In this work, the complete protein composition of biofilms deposited on PEG-based surfaces from human blood plasma (BP) was identified for the first time using nanoLC-MS/MS, a powerful tool in protein analysis. The mass of deposited BP and the number of different proteins contained in the deposits on individual surfaces decreased in the order of self-assembling monolayers of oligo(ethylene glycol) alkanethiolates (SAM) > poly(ethylene glycol) end-grafted onto a SAM > poly(oligo(ethylene glycol) methacrylate) brushes prepared by surface initiated polymerization (poly(OEGMA)). The BP deposit on the poly(OEGMA) surface was composed only of apolipoprotein A-I, apolipoprotein B-100, complement C3, complement C4-A, complement C4-B, histidine-rich glycoprotein, Ig mu chain C region, fibrinogen (Fbg), and serum albumin (HSA). The total resistance of the surface to the Fbg and HSA adsorption from single protein solutions suggested that their deposition from BP was mediated by some of the other proteins. Current theories of protein resistance are not sufficient to explain the observed plasma fouling. The research focused on the identified proteins, and the experimental approach used in this work can provide the basis for the understanding and rational design of plasma-resistant surfaces.
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Affiliation(s)
- Tomáš Riedel
- Department of Biomaterials and Bioanalogous Systems, Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, vvi, Prague, Czech Republic
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48
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Leclercq L, Modena E, Vert M. Adsorption of proteins at physiological concentrations on pegylated surfaces and the compatibilizing role of adsorbed albumin with respect to other proteins according to optical waveguide lightmode spectroscopy (OWLS). JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 24:1499-518. [DOI: 10.1080/09205063.2013.772045] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Laurent Leclercq
- a Faculty of Pharmacy, Max Mousseron Institute of Biomolecules , UMR CNRS 5247, University Montpellier 1, Team CRBA, 15 Avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 5 , France
| | - Enrico Modena
- a Faculty of Pharmacy, Max Mousseron Institute of Biomolecules , UMR CNRS 5247, University Montpellier 1, Team CRBA, 15 Avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 5 , France
| | - Michel Vert
- a Faculty of Pharmacy, Max Mousseron Institute of Biomolecules , UMR CNRS 5247, University Montpellier 1, Team CRBA, 15 Avenue Charles Flahault, BP 14491, 34093, Montpellier Cedex 5 , France
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49
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Delcroix MF, Huet GL, Conard T, Demoustier-Champagne S, Du Prez FE, Landoulsi J, Dupont-Gillain CC. Design of Mixed PEO/PAA Brushes with Switchable Properties Toward Protein Adsorption. Biomacromolecules 2012; 14:215-25. [DOI: 10.1021/bm301637h] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- M. F. Delcroix
- Institute of Condensed Matter
and Nanosciences, Université catholique de Louvain, Croix du Sud 1 (L7.04.01), 1348 Louvain-la-Neuve, Belgium
| | - G. L. Huet
- Institute of Condensed Matter
and Nanosciences, Université catholique de Louvain, Croix du Sud 1 (L7.04.01), 1348 Louvain-la-Neuve, Belgium
| | - T. Conard
- IMEC,
Kapeldreef 75, 3001 Leuven, Belgium
| | - S. Demoustier-Champagne
- Institute of Condensed Matter
and Nanosciences, Université catholique de Louvain, Croix du Sud 1 (L7.04.01), 1348 Louvain-la-Neuve, Belgium
| | - F. E. Du Prez
- Polymer Research Group, Ghent University, Krijgslaan 281 S4-bis, 9000 Ghent,
Belgium
| | - J. Landoulsi
- Laboratoire de
Réactivité
de Surface, UMR 7197 CNRS, Université Pierre and Marie Curie - Paris VI, 4 Place Jussieu, Case 178, 75252
Paris, France
| | - C. C. Dupont-Gillain
- Institute of Condensed Matter
and Nanosciences, Université catholique de Louvain, Croix du Sud 1 (L7.04.01), 1348 Louvain-la-Neuve, Belgium
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50
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Amini AR, Wallace JS, Nukavarapu SP. Short-term and long-term effects of orthopedic biodegradable implants. J Long Term Eff Med Implants 2012; 21:93-122. [PMID: 22043969 DOI: 10.1615/jlongtermeffmedimplants.v21.i2.10] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Presently, orthopedic and oral/maxillofacial implants represent a combined $2.8 billion market, a figure expected to experience significant and continued growth. Although traditional permanent implants have been proved clinically efficacious, they are also associated with several drawbacks, including secondary revision and removal surgeries. Non-permanent, biodegradable implants offer a promising alternative for patients, as they provide temporary support and degrade at a rate matching tissue formation, and thus, eliminate the need for secondary surgeries. These implants have been in clinical use for nearly 25 years, competing directly with, or maybe even exceeding, the performance of permanent implants. The initial implantation of biodegradable materials, as with permanent materials, mounts an acute host inflammatory response. Over time, the implant degradation profile and possible degradation product toxicity mediate long-term biodegradable implant-induced inflammation. However, unlike permanent implants, this inflammation is likely to cease once the material disappears. Implant-mediated inflammation is a critical determinant for implant success. Thus, for the development of a proactive biodegradable implant that has the ability to promote optimal bone regeneration and minimal detrimental inflammation, a thorough understanding of short- and long-term inflammatory events is required. Here, we discuss an array of biodegradable orthopedic implants, their associated short- and long- term inflammatory effects, and methods to mediate these inflammatory events.
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Affiliation(s)
- Ami R Amini
- Department of Orthopaedic Surgery, University of Connecticut Health Center, Farmington, CT, USA
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