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Li Q, Wen C, Yang J, Zhou X, Zhu Y, Zheng J, Cheng G, Bai J, Xu T, Ji J, Jiang S, Zhang L, Zhang P. Zwitterionic Biomaterials. Chem Rev 2022; 122:17073-17154. [PMID: 36201481 DOI: 10.1021/acs.chemrev.2c00344] [Citation(s) in RCA: 254] [Impact Index Per Article: 84.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The term "zwitterionic polymers" refers to polymers that bear a pair of oppositely charged groups in their repeating units. When these oppositely charged groups are equally distributed at the molecular level, the molecules exhibit an overall neutral charge with a strong hydration effect via ionic solvation. The strong hydration effect constitutes the foundation of a series of exceptional properties of zwitterionic materials, including resistance to protein adsorption, lubrication at interfaces, promotion of protein stabilities, antifreezing in solutions, etc. As a result, zwitterionic materials have drawn great attention in biomedical and engineering applications in recent years. In this review, we give a comprehensive and panoramic overview of zwitterionic materials, covering the fundamentals of hydration and nonfouling behaviors, different types of zwitterionic surfaces and polymers, and their biomedical applications.
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Affiliation(s)
- Qingsi Li
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Chiyu Wen
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Jing Yang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Xianchi Zhou
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yingnan Zhu
- Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Center for Drug Safety Evaluation and Research, Zhengzhou University, Zhengzhou 450001, China
| | - Jie Zheng
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Gang Cheng
- Department of Chemical Engineering, The University of Illinois at Chicago, Chicago, Illinois 60607, United States
| | - Jie Bai
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, Inner Mongolia 010051, China
| | - Tong Xu
- College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot, Inner Mongolia 010051, China
| | - Jian Ji
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Shaoyi Jiang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Lei Zhang
- Department of Biochemical Engineering, Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
| | - Peng Zhang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
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Ma X, Fu X, Sun J. Preparation of a Novel Type of Zwitterionic Polymer and the Antifouling PDMS Coating. Biomimetics (Basel) 2022; 7:biomimetics7020050. [PMID: 35645177 PMCID: PMC9149847 DOI: 10.3390/biomimetics7020050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/02/2022] [Accepted: 04/16/2022] [Indexed: 11/22/2022] Open
Abstract
As awareness of environmental protection increases, environmentally friendly coatings have been receiving great interest. Zwitterionic polymers are considered promising candidates due to their biocompatibility and excellent antifouling properties. In this paper, a type of polypeptoid containing zwitterions on the side chain was synthesized via ring-opening polymerization (ROP) and post-modification. This obtained polypeptoid was subsequently grafted onto the surface of polydimethylsiloxane (PDMS) via plasma and UV-induced surface polymerization. Surface morphology and protein adsorption tests of the resulting coating were systematically carried out. The results show that the modified coating has excellent antifouling properties and thus has great potential for environmentally friendly coating applications.
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Affiliation(s)
- Xutao Ma
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; (X.M.); (X.F.)
| | - Xiaohui Fu
- College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; (X.M.); (X.F.)
| | - Jing Sun
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
- Correspondence:
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Visan AI, Popescu-Pelin G, Socol G. Degradation Behavior of Polymers Used as Coating Materials for Drug Delivery-A Basic Review. Polymers (Basel) 2021; 13:1272. [PMID: 33919820 PMCID: PMC8070827 DOI: 10.3390/polym13081272] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 04/03/2021] [Accepted: 04/08/2021] [Indexed: 12/21/2022] Open
Abstract
The purpose of the work was to emphasize the main differences and similarities in the degradation mechanisms in the case of polymeric coatings compared with the bulk ones. Combined with the current background, this work reviews the properties of commonly utilized degradable polymers in drug delivery, the factors affecting degradation mechanism, testing methods while offering a retrospective on the evolution of the controlled release of biodegradable polymeric coatings. A literature survey on stability and degradation of different polymeric coatings, which were thoroughly evaluated by different techniques, e.g., polymer mass loss measurements, surface, structural and chemical analysis, was completed. Moreover, we analyzed some shortcomings of the degradation behavior of biopolymers in form of coatings and briefly proposed some solving directions to the main existing problems (e.g., improving measuring techniques resolution, elucidation of complete mathematical analysis of the different degradation mechanisms). Deep studies are still necessary on the dynamic changes which occur to biodegradable polymeric coatings which can help to envisage the future performance of synthesized films designed to be used as medical devices with application in drug delivery.
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Affiliation(s)
- Anita Ioana Visan
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077190 Magurele, Ilfov, Romania;
| | | | - Gabriel Socol
- Lasers Department, National Institute for Lasers, Plasma and Radiation Physics, 077190 Magurele, Ilfov, Romania;
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4
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Surface modification by poly(ethylene glycol) with different end-grafted groups: Experimental and theoretical study. Biointerphases 2021; 16:021002. [PMID: 33726496 DOI: 10.1116/6.0000647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Dihydroxyphenylalanine (DOPA) is extensively reported to be a surface-independent anchor molecule in bioadhesive surface modification and antifouling biomaterial fabrication. However, the mechanisms of DOPA adsorption on versatile substrates and the comparison between experimental results and theoretical results are less addressed. We report the adsorption of DOPA anchored monomethoxy poly(ethylene glycol) (DOPA-mPEG) on substrates and surface wettability as well as antifouling property in comparison with thiol and hydroxyl anchored mPEG (mPEG-SH and mPEG-OH). Gold and hydroxylated silicon were used as model substrates to study the adsorptions of mPEGs. The experimental results showed that the DOPA-mPEG showed higher affinity to both gold and silicon wafers, and the DOPA-mPEG modified surfaces had higher resistance to protein adsorption than those of mPEG-SH and mPEG-OH. It is revealed that the surface wettability is primary for surface fouling, while polymer flexibility is the secondary parameter. We present ab initio calculations of the adsorption of mEGs with different end-functionalities on Au and hydroxylated silicon wafer (Si-OH), where the binding energies are obtained. It is established that monomethoxy ethylene glycol (mEG) with DOPA terminal DOPA-mEG is clearly favored for the adsorption with both gold and Si-OH surfaces due to the bidentate Au-O interactions and the bidentate O-H bond interactions, in agreement with experimental evidence.
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5
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Facile fabrication of a high-efficient and biocompatibility biocatalyst for bisphenol A removal. Int J Biol Macromol 2020; 150:948-954. [DOI: 10.1016/j.ijbiomac.2019.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/31/2019] [Accepted: 11/02/2019] [Indexed: 01/12/2023]
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6
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Jiang YW, Gao G, Hu P, Liu JB, Guo Y, Zhang X, Yu XW, Wu FG, Lu X. Palladium nanosheet-knotted injectable hydrogels formed via palladium-sulfur bonding for synergistic chemo-photothermal therapy. NANOSCALE 2020; 12:210-219. [PMID: 31815993 DOI: 10.1039/c9nr08454a] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanoparticle (NP)-based hydrogels that can introduce synergistic advantages to the novel three-dimensional scaffold have garnered much attention recently. However, the application of NP-crosslinked hydrogels still remains challenging due to the complicated synthesis and/or modification of the NPs and the changed properties of the NPs after gelation. Herein, a novel palladium nanosheet (Pd NS)-based hydrogel (Pd Gel) with Pd NSs as crosslinkers was obtained by simply mixing Pd NSs with thiol-terminated four-arm polyethylene glycol (4arm-PEG-thiol). It was found that the formed Pd Gel was injectable, possibly due to the dynamic Pd-S bonds formed between Pd NSs and 4arm-PEG-thiol. In addition, compared with free Pd NSs, the Pd NSs within the hydrogel exhibited a significantly higher stability. We have further demonstrated that the formed hydrogel could encapsulate the commonly used anticancer drug doxorubicin (DOX) to form DOX@Pd Gel for combined chemo-photothermal therapy. Particularly, Pd NSs with a high absorption in the near-infrared (NIR) region could convert the energy of NIR laser into heat with a high efficiency, which is beneficial for photothermal therapy. Moreover, DOX@Pd Gel could maintain a sustainable release of DOX and the NIR laser irradiation could accelerate this drug release process. Then, the explosively released DOX and the hyperthermia generated from Pd NSs under NIR laser irradiation acted in a synergistic way to realize the combined therapeutic effect of the chemo-photothermal treatment. Finally, the in vivo anticancer effect and safety of the combined therapy were also verified by the tumor-bearing mouse model. Taken together, this work constructs a NP-crosslinked, NIR laser-activatable and injectable photothermal hydrogel via dynamic Pd-S bonding, and demonstrates that the hydrogel allows us to release DOX more precisely, eliminate tumor more effectively and inhibit tumor metastasis more persistently, which will advance the development of novel anticancer strategies.
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Affiliation(s)
- Yao-Wen Jiang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
| | - Ge Gao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
| | - Pengcheng Hu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
| | - Jia-Bao Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
| | - Yuxin Guo
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
| | - Xiaodong Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
| | - Xin-Wang Yu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
| | - Xiaolin Lu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, 2 Sipailou Road, Nanjing 210096, P. R. China.
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7
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Sharma N, Rajan R, Makhaik S, Matsumura K. Comparative Study of Protein Aggregation Arrest by Zwitterionic Polysulfobetaines: Using Contrasting Raft Agents. ACS OMEGA 2019; 4:12186-12193. [PMID: 31460333 PMCID: PMC6681992 DOI: 10.1021/acsomega.9b01409] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 06/14/2019] [Indexed: 06/10/2023]
Abstract
Protein aggregation has caused limitations in the study and development of protein-based biopharmaceuticals. We prepared different polysulfobetaine (poly-SPB) polymers via reversible addition fragmentation chain transfer (RAFT) polymerization. These polymers exhibited high efficiency in modulation of protein aggregation. We synthesized polysulfobetaines using two different RAFT agents, and analyzed the aggregation profile of lysozyme and insulin. In poly-SPBs, existence of a hydrophobic RAFT agent resulted in visible enhancement of the residual enzymatic activity of lysozyme, whereas it remained unaffected by the hydrophilic RAFT agent. In addition, these polymers resulted in significant suppression in the aggregation of insulin. Increase in the molecular weight of the polymer caused higher efficiency to perpetuate enzymatic activity of lysozyme upon thermal denaturation. The polymers arrested the formation of amyloid like fibrils of lysozyme and insulin, thus indicating their potential to inhibit aggregation. The results unambiguously demonstrate the importance of polysulfobetaine moiety and hydrophobicity in protein aggregation inhibition. This study gives insight into the protein aggregation inhibition by zwitterionic polymers, which have a potential to be developed as aggregation inhibitors in the future.
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Affiliation(s)
- Neha Sharma
- School of Materials Science, Japan Advanced Institute of Science and Technology, Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Robin Rajan
- School of Materials Science, Japan Advanced Institute of Science and Technology, Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Sparsh Makhaik
- School of Materials Science, Japan Advanced Institute of Science and Technology, Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Kazuaki Matsumura
- School of Materials Science, Japan Advanced Institute of Science and Technology, Asahidai, Nomi, Ishikawa 923-1292, Japan
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Pereiro I, Fomitcheva Khartchenko A, Petrini L, Kaigala GV. Nip the bubble in the bud: a guide to avoid gas nucleation in microfluidics. LAB ON A CHIP 2019; 19:2296-2314. [PMID: 31168556 DOI: 10.1039/c9lc00211a] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Gas bubbles are almost a routine occurrence encountered by researchers working in the field of microfluidics. The spontaneous and unexpected nature of gas bubbles represents a major challenge for experimentalists and a stumbling block for the translation of microfluidic concepts to commercial products. This is a startling example of successful scientific results in the field overshadowing the practical hurdles of day-to-day usage. We however believe such hurdles can be overcome with a sound understanding of the underlying conditions that lead to bubble formation. In this tutorial, we focus on the two main conditions that result in bubble nucleation: surface nuclei and gas supersaturation in liquids. Key theoretical concepts such as Henry's law, Laplace pressure, the role of surface properties, nanobubbles and surfactants are presented along with a view of practical implementations that serve as preventive and curative measures. These considerations include not only microfluidic chip design and bubble traps but also often-overlooked conditions that regulate bubble formation, such as gas saturation under pressure or temperature gradients. Scenarios involving electrolysis, laser and acoustic cavitation or T-junction/co-flow geometries are also explored to provide the reader with a broader understanding on the topic. Interestingly, despite their often-disruptive nature, gas bubbles have also been cleverly utilized for certain practical applications, which we briefly review. We hope this tutorial will provide a reference guide in helping to deal with a familiar foe, the "bubble".
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Affiliation(s)
- Iago Pereiro
- IBM Research - Zurich, Säumerstrasse 4, Rüschlikon, CH-8803, Switzerland.
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Xie R, Tian Y, Peng S, Zhang L, Men Y, Yang W. Poly(2-methacryloyloxyethyl phosphorylcholine)-based biodegradable nanogels for controlled drug release. Polym Chem 2018; 9:4556-4565. [DOI: 10.1039/c8py00948a] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2025]
Abstract
We developed reduction degradable PMPC nanogels for controlled drug releaseviaprecipitation polymerization using a disulfide-containing crosslinker.
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Affiliation(s)
- Ruihong Xie
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Yefei Tian
- School of Materials Science and Engineering
- Chang'an University
- Xi'an 710064
- PR China
| | - Shaojun Peng
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Liren Zhang
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
| | - Yongzhi Men
- Shanghai General Hospital
- Shanghai Jiao Tong University School of Medicine
- Shanghai
- PR China
| | - Wuli Yang
- State Key Laboratory of Molecular Engineering of Polymers and Department of Macromolecular Science
- Fudan University
- Shanghai 200433
- P.R. China
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10
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Schroeder TBH, Leriche G, Koyanagi T, Johnson MA, Haengel KN, Eggenberger OM, Wang CL, Kim YH, Diraviyam K, Sept D, Yang J, Mayer M. Effects of Lipid Tethering in Extremophile-Inspired Membranes on H(+)/OH(-) Flux at Room Temperature. Biophys J 2016; 110:2430-2440. [PMID: 27276261 PMCID: PMC4906265 DOI: 10.1016/j.bpj.2016.04.044] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 04/08/2016] [Accepted: 04/12/2016] [Indexed: 01/22/2023] Open
Abstract
This work explores the proton/hydroxide permeability (PH+/OH-) of membranes that were made of synthetic extremophile-inspired phospholipids with systematically varied structural elements. A fluorescence-based permeability assay was optimized to determine the effects on the PH+/OH- through liposome membranes with variations in the following lipid attributes: transmembrane tethering, tether length, and the presence of isoprenoid methyl groups on one or both lipid tails. All permeability assays were performed in the presence of a low concentration of valinomycin (10 nM) to prevent buildup of a membrane potential without artificially increasing the measured PH+/OH-. Surprisingly, the presence of a transmembrane tether did not impact PH+/OH- at room temperature. Among tethered lipid monolayers, PH+/OH- increased with increasing tether length if the number of carbons in the untethered acyl tail was constant. Untethered lipids with two isoprenoid methyl tails led to lower PH+/OH- values than lipids with only one or no isoprenoid tails. Molecular dynamics simulations revealed a strong positive correlation between the probability of observing water molecules in the hydrophobic core of these lipid membranes and their proton permeability. We propose that water penetration as revealed by molecular dynamics may provide a general strategy for predicting proton permeability through various lipid membranes without the need for experimentation.
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Affiliation(s)
- Thomas B H Schroeder
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan; Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland
| | - Geoffray Leriche
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California
| | - Takaoki Koyanagi
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California
| | - Mitchell A Johnson
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Kathryn N Haengel
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Olivia M Eggenberger
- Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Claire L Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Young Hun Kim
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California
| | - Karthik Diraviyam
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - David Sept
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Jerry Yang
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, California
| | - Michael Mayer
- Adolphe Merkle Institute, University of Fribourg, Fribourg, Switzerland; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan.
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11
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Shen L, Zhu J. Heterogeneous surfaces to repel proteins. Adv Colloid Interface Sci 2016; 228:40-54. [PMID: 26691416 DOI: 10.1016/j.cis.2015.11.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/06/2015] [Accepted: 11/09/2015] [Indexed: 11/17/2022]
Abstract
The nonspecific adsorption of proteins is usually undesirable on solid surfaces as it induces adverse responses, such as platelet adhesion on medical devices, negative signals of biosensors and contamination blockage of filtration membranes. Thus, an important scheme in material science is to design and fabricate protein-repulsive surfaces. Early approaches in this field focused on homogeneous surfaces comprised of single type functionality. Yet, recent researches have demonstrated that surfaces with heterogeneities (chemistry and topography) show promising performance against protein adsorption. In this review, we will summarize the recent achievements and discuss the new perspectives in the research of developing and characterizing heterogeneous surfaces to repel proteins. The protein repulsion mechanisms of different heterogeneous surfaces will also be discussed in details, followed by the perspective and challenge of this emerging field.
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Affiliation(s)
- Lei Shen
- Key Laboratory for Large-Format Battery Materials and System of the Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Jintao Zhu
- Key Laboratory for Large-Format Battery Materials and System of the Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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12
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Du H, Qian X. The hydration properties of carboxybetaine zwitterion brushes. J Comput Chem 2015; 37:877-85. [DOI: 10.1002/jcc.24234] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 09/30/2015] [Accepted: 10/04/2015] [Indexed: 01/23/2023]
Affiliation(s)
- Hongbo Du
- Department of Biomedical Engineering; University of Arkansas; Fayetteville Arkansas 72701
| | - Xianghong Qian
- Department of Biomedical Engineering; University of Arkansas; Fayetteville Arkansas 72701
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13
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Jaffer IH, Fredenburgh JC, Hirsh J, Weitz JI. Medical device-induced thrombosis: what causes it and how can we prevent it? J Thromb Haemost 2015; 13 Suppl 1:S72-81. [PMID: 26149053 DOI: 10.1111/jth.12961] [Citation(s) in RCA: 351] [Impact Index Per Article: 35.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Blood-contacting medical devices, such as vascular grafts, stents, heart valves, and catheters, are often used to treat cardiovascular diseases. Thrombus formation is a common cause of failure of these devices. This study (i) examines the interface between devices and blood, (ii) reviews the pathogenesis of clotting on blood-contacting medical devices, (iii) describes contemporary methods to prevent thrombosis on blood-contacting medical devices, (iv) explains why some anticoagulants are better than others for prevention of thrombosis on medical devices, and (v) identifies future directions in biomaterial research for prevention of thrombosis on blood-contacting medical devices.
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Affiliation(s)
- I H Jaffer
- Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - J C Fredenburgh
- Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - J Hirsh
- Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Medicine, McMaster University, Hamilton, ON, Canada
| | - J I Weitz
- Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Medicine, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
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14
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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: 9.9] [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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15
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Yang Q, Li W, Wang L, Wang G, Wang Z, Liu L, Chen S. Investigation of nonfouling polypeptides of poly(glutamic acid) with lysine side chains synthesized by EDC·HCl/HOBt chemistry. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:1717-29. [DOI: 10.1080/09205063.2014.941262] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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16
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Abstract
The contact of any biomaterial with blood gives rise to multiple pathophysiologic defensive mechanisms such as activation of the coagulation cascade, platelet adhesion and activation of the complement system and leukocytes. The reduction of these events is of crucial importance for the successful clinical performance of a cardiovascular device. This can be achieved by improving the hemocompatibility of the device materials or by pharmacologic inhibition of the key enzymes responsible for the activation of the cascade reactions, or a combination of both. Different strategies have been developed during the last 20 years, and this article attempts to review the most significant, by dividing them into three main categories: bioinert or biopassive, biomimetic and bioactive strategies. With regard to bioactive strategies, particular attention is given to heparin immobilization and recent related technologies. References from both scientific literature and commercial sites are provided. Future development and studies are suggested.
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Affiliation(s)
- Maria Cristina Tanzi
- Politecnico di Milano, Bioengineering Department, P.zza L. da Vinci, Milano, Italy.
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17
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Yang Q, Wang L, Lin W, Ma G, Yuan J, Chen S. Development of nonfouling polypeptides with uniform alternating charges by polycondensation of the covalently bonded dimer of glutamic acid and lysine. J Mater Chem B 2013; 2:577-584. [PMID: 32261539 DOI: 10.1039/c3tb21333a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this work, nonfouling polypeptides with homogenous alternating charges were synthesized by polycondensation of the covalently bonded dimer of glutamic acid (E) and lysine (K) (EK dimer) with benzyloxycarbonyl (Z)-protected side chains. This facile method successfully solved the uniformity problem of nonfouling peptides caused by the copolymerization of two different monomers and enabled the incorporation of various terminal functional groups for future applications. The molecular weights (MWs) of the nonfouling peptides can be easily controlled by the ratio of the terminal group, lipoic acid, to the EK dimer. The nonfouling peptides can form self-assembling monolayers (SAMs) on a gold surface through two terminal thiol groups, which were characterized by attenuated total reflection Fourier transform infrared (ATR-FTIR), X-ray photoelectron spectroscopy (XPS) and ellipsometry (ELL). The resistance to nonspecific protein adsorption, cell attachment and bacterial adhesion of these nonfouling peptide SAMs and the in vitro cytotoxicity and haemolytic activity of these peptides were also evaluated. The results show that the lowest relative protein adsorptions of antibody (anti-IgG) and fibrinogen (Fg) on the SAMs are 5.1 ± 1.6% and 7.3 ± 1.8%, respectively, determined by enzyme-linked immunosorbent assay (ELISA), where the protein adsorption on a tissue culture polystyrene (TCPS) surface was set to 100%. Almost no obvious cell attachment and bacterial adhesion were observed, and no cytotoxicity and no haemolytic activity in vitro were detected. With the advantages of biocompatibility, biodegradability and the abundance of moieties for ligand immobilization, these nonfouling peptides developed by the facile method can be used in a wide range of biomedical applications.
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Affiliation(s)
- Qinghua Yang
- State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, PR China.
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Tanaka M, Yoshioka K, Hirata Y, Fujimaki M, Kuwahara M, Niwa O. Design and fabrication of biosensing interface for waveguide-mode sensor. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:13111-13120. [PMID: 24063697 DOI: 10.1021/la402802u] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In order to develop a biosensing system with waveguide-mode sensor, fabrication of a biosensing interface on the silica surface of the sensing chip was carried out using triethoxysilane derivatives with anti-leptin antibody. Triethoxysilane derivatives bearing succinimide ester and oligoethylene glycol moieties were synthesized to immobilize the antibody and to suppress nonspecific adsorption of proteins, respectively. The chip modified with triethoxysilane derivatives bearing oligoethylene glycol moiety suppressed nonspecific adsorption of proteins derived from human serum effectively by rinse with PBS containing surfactant (0.05% Tween 20). On the other hand, it was confirmed that antibody was immobilized on the chip by immersion into antibody solution to show response of antigen-antibody reaction, where the chip was modified with triethoxysilane derivatives bearing succinimide ester moiety. When the interface was fabricated with antibody and a mixture of triethoxysilane derivatives bearing succinimide ester and oligoethylene glycol moieties, the response of antigen-antibody reaction depended on composition of the mixture and enhanced with the increase of ratio for triethoxysilane derivatives bearing succinimide ester moiety reflecting the antibody concentration immobilized on the chip. While introduction of excess triethoxysilane derivatives bearing succinimide ester moiety induced nonspecific adsorption of proteins derived from human serum, the immobilized antibody on the chip kept its activity after 1-month storage in a refrigerator. Taking into consideration those factors, the biosensing interface was fabricated using triethoxysilane derivatives with anti-leptin antibody to examine performance of the waveguide-mode sensor. It was found that the detection limits for human leptin were 50 ng/mL in PBS and 100 ng/mL in human serum. The results demonstrate that the waveguide-mode sensor powered by the biosensing interface fabricated with those triethoxysilane derivatives and antibody has potential to detect several tens of nanograms per milliliter of biomarkers in human serum with an unlabeled detection method.
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Affiliation(s)
- Mutsuo Tanaka
- Biomedical Research Institute , Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
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Gui AL, Luais E, Peterson JR, Gooding JJ. Zwitterionic phenyl layers: finally, stable, anti-biofouling coatings that do not passivate electrodes. ACS APPLIED MATERIALS & INTERFACES 2013; 5:4827-4835. [PMID: 23642233 DOI: 10.1021/am400519m] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Organic coatings on electrodes that limit biofouling by proteins but are of sufficiently low impedance to still allow Faradaic electrochemistry to proceed at the underlying electrode are described for the first time. These organic coatings formed using simple aryl diazonium salts present a zwitterionic surface and exhibit good electrochemical stability. The layers represent a low impedance alternative to the oligo (ethylene glycol) (OEG)-based anti-biofouling coatings and are expected to find applications in electrochemical biosensors and implantable electrodes. Two different zwitterionic layers grafted to glassy carbon surfaces are presented and compared to a number of better-known surfaces, including OEG-based phenyl-layer-grafted glassy carbon surfaces and OEG alkanethiol SAMs coated on gold, to allow the performance of these new layers to be compared to the body of work on other anti-biofouling surfaces. The results suggest that phenyl-based zwitterionic coatings are as effective as the OEG SAMs at resisting the nonspecific adsorption of bovine serum albumin and cytochrome c, as representative anionic and cationic proteins at physiological pH, whereas the impedance of the zwitterionic phenyl layers are two orders of magnitude lower than OEG SAMs.
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Affiliation(s)
- Alicia L Gui
- School of Chemistry and Australian Centre for NanoMedicine, The University of New South Wales, Sydney, NSW 2052, Australia
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Goda T, Tabata M, Sanjoh M, Uchimura M, Iwasaki Y, Miyahara Y. Thiolated 2-methacryloyloxyethyl phosphorylcholine for an antifouling biosensor platform. Chem Commun (Camb) 2013; 49:8683-5. [DOI: 10.1039/c3cc44357d] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Miao Z, Kujawa P, Lau YTR, Toita S, Qi B, Nakanishi J, Cloutier I, Tanguay JF, Winnik FM. Tuning the properties and functions of 17β-estradiol-polysaccharide conjugates in thin films: impact of sample history. Biomacromolecules 2012; 13:4098-108. [PMID: 23157364 DOI: 10.1021/bm301394w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In addition to its role in the regulation of sex-related processes, 17β-estradiol (E2) participates in the prevention and treatment of cardiovascular diseases via nongenomic pathways mediated by estrogen receptors (ER-α) located in the cell membrane. To achieve specific nongenomic activity of E2, we linked E2 (4.4 mol %) to chitosan-phosphorylcholine (CH-PC) (20 mol % PC). Injections of ER-α solutions (5 to 100 nmol L(-1)) over rehydrated CH-PC-E2 thin films led to permanent adsorption of ER-α to the film surface, as detected by quartz crystal microbalance with dissipation (QCM-D). However, ER-α did not bind onto CH-PC-E2 films formed in situ and never dried. X-ray photoelectron spectroscopy (XPS) analysis of spin-cast CH-PC-E2 films revealed significant E2 enrichment of the topmost section of the film, attributed to the preferential migration of E2 toward the film/air interface upon drying. Mechanical analysis of CH-PC-E2 films in the frequency domain probed by QCM-D indicated that rehydrated films behave as an entangled network with junction points formed by self-assembly of hydrophobic E2 moieties and by ion pairing among PC groups, whereas films formed in situ are entangled polymer solutions with temporary junctions. The structural analysis presented offers useful guidelines for the study of amphiphilic biomacromolecules designed for therapeutic use as thin films.
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Affiliation(s)
- Zhimei Miao
- Faculté de Pharmacie and Département de Chimie, Université de Montréal, CP 6128 Succursale Centre Ville, Montréal, QC, H3C 3J7, Canada
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22
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Gong YK, Liu LP, Messersmith PB. Doubly Biomimetic Catecholic Phosphorylcholine Copolymer: A Platform Strategy for Fabricating Antifouling Surfaces. Macromol Biosci 2012; 12:979-85. [DOI: 10.1002/mabi.201200074] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Indexed: 11/12/2022]
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23
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Mochizuki A, Kimura M, Ina A, Tomono Y, Tanaka M. Study on the Water Structure and Blood Compatibility of Poly(acryloylmorpholine-r-butyl methacrylate). JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 21:1895-910. [DOI: 10.1163/092050610x489321] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Akira Mochizuki
- a Department of Bio-Medical Engineering, School of High-Technology for Human Welfare, Tokai University, Nishino 317, Numazu, Shizuoka 410-0395, Japan
| | - Maki Kimura
- b Department of Bio-Medical Engineering, School of High-Technology for Human Welfare, Tokai University, Nishino 317, Numazu, Shizuoka 410-0395, Japan
| | - Ayano Ina
- c Department of Bio-Medical Engineering, School of High-Technology for Human Welfare, Tokai University, Nishino 317, Numazu, Shizuoka 410-0395, Japan
| | - Yuka Tomono
- d Department of Bio-Medical Engineering, School of High-Technology for Human Welfare, Tokai University, Nishino 317, Numazu, Shizuoka 410-0395, Japan
| | - Masaru Tanaka
- e Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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Dickerson MT, Abney MB, Cameron CE, Knecht M, Bachas LG, Anderson KW. Fibronectin binding to the Treponema pallidum adhesin protein fragment rTp0483 on functionalized self-assembled monolayers. Bioconjug Chem 2012; 23:184-95. [PMID: 22175441 PMCID: PMC3288308 DOI: 10.1021/bc200436x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Past work has shown that Treponema pallidum, the causative agent of syphilis, binds host fibronectin (FN). FN and other host proteins are believed to bind to rare outer membrane proteins (OMPs) of T. pallidum, and it is postulated that this interaction may facilitate cell attachment and mask antigenic targets on the surface. This research seeks to prepare a surface capable of mimicking the FN binding ability of T. pallidum in order to investigate the impact of FN binding with adsorbed Tp0483 on the host response to the surface. By understanding this interaction, it may be possible to develop more effective treatments for infection and possibly mimic the stealth properties of the bacteria. Functionalized self-assembled monolayers (SAMs) on gold were used to investigate rTp0483 and FN adsorption. Using a quartz crystal microbalance (QCM), rTp0483 adsorption and subsequent FN adsorption onto rTp0483 were determined to be higher on negatively charged carboxylate-terminated self-assembled monolayers (-COO(-) SAMs) compared to the other surfaces analyzed. Kinetic analysis of rTp0483 adsorption using surface plasmon resonance (SPR) supported this finding. Kinetic analysis of FN adsorption using SPR revealed a multistep event, where the concentration of immobilized rTp0483 plays a role in FN binding. An examination of relative QCM dissipation energy compared to the shift in frequency showed a correlation between the physical properties of adsorbed rTp0483 and SAM surface chemistry. In addition, AFM images of rTp0483 on selected SAMs illustrated a preference of rTp0483 to bind as aggregates. Adsorption on -COO(-) SAMs was more uniform across the surface, which may help further explain why FN bound more strongly. rTp0483 antibody studies suggested the involvement of amino acids 274-289 and 316-333 in binding between rTp0483 to FN, while a peptide blocking study only showed inhibition of binding with amino acids 316-333. Finally, surface adsorbed rTp0483 with FN bound significantly less anti-RGD and gelatin compared to FN adsorbed directly to -COO(-) SAMs, indicating that one or both binding regions may play a role in binding between rTp0483 and FN.
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Affiliation(s)
- Matthew T. Dickerson
- Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506-0054, USA
| | - Morgan B. Abney
- Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506-0054, USA
| | - Caroline E. Cameron
- Department of Biochemistry and Microbiology, University of Victoria, Victoria, BC V8P 5C2, Canada
| | - Marc Knecht
- Department of Chemistry, University of Miami, Miami, FL, 33124-4620, USA
| | - Leonidas G. Bachas
- Department of Chemistry, University of Miami, Miami, FL, 33124-4620, USA
| | - Kimberly W. Anderson
- Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506-0054, USA
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Beurer E, Venkataraman NV, Sommer M, Spencer ND. Protein and nanoparticle adsorption on orthogonal, charge-density-versus-net-charge surface-chemical gradients. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:3159-3166. [PMID: 22216744 DOI: 10.1021/la203964a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
An orthogonal, charge-density-versus-net-charge, surface-chemical gradient, composed of ternary mixed self-assembled monolayers, has been prepared from three hydrophilic components: positively chargeable amine-terminated, negatively chargeable carboxylic-acid-terminated, and hydroxyl-terminated alkanethiols, with the latter bearing a slight negative charge in electrolytes. The chemical composition and its distribution have been monitored by X-ray photoelectron spectroscopy. The adsorption behavior of negatively charged SiO(2) nanoparticles and positively charged amine-modified SiO(2) nanoparticles has been studied. Additionally, negatively charged proteins (bovine serum albumin and fibrinogen) and positively charged proteins (lysozyme) were adsorbed on the gradients. Negatively charged nanoparticles and proteins adsorb mainly in the positively charged region and vice versa, illustrating that the adsorption behavior is mainly influenced by electrostatic interactions, and showing the potential of the gradient for sorting applications. Despite literature reports to the contrary, no area was found that was completely resistant to protein adsorption.
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Affiliation(s)
- Eva Beurer
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich, Wolfgang-Pauli-Str. 10, CH-8093 Zurich, Switzerland
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26
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Gong YK, Winnik FM. Strategies in biomimetic surface engineering of nanoparticles for biomedical applications. NANOSCALE 2012; 4:360-8. [PMID: 22134705 DOI: 10.1039/c1nr11297j] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Engineered nanoparticles (NPs) play an increasingly important role in biomedical sciences and in nanomedicine. Yet, in spite of significant advances, it remains difficult to construct drug-loaded NPs with precisely defined therapeutic effects, in terms of release time and spatial targeting. The body is a highly complex system that imposes multiple physiological and cellular barriers to foreign objects. Upon injection in the blood stream or following oral administation, NPs have to bypass numerous barriers prior to reaching their intended target. A particularly successful design strategy consists in masking the NP to the biological environment by covering it with an outer surface mimicking the composition and functionality of the cell's external membrane. This review describes this biomimetic approach. First, we outline key features of the composition and function of the cell membrane. Then, we present recent developments in the fabrication of molecules that mimic biomolecules present on the cell membrane, such as proteins, peptides, and carbohydrates. We present effective strategies to link such bioactive molecules to the NPs surface and we highlight the power of this approach by presenting some exciting examples of biomimetically engineered NPs useful for multimodal diagnostics and for target-specific drug/gene delivery applications. Finally, critical directions for future research and applications of biomimetic NPs are suggested to the readers.
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Affiliation(s)
- Yong-kuan Gong
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, PR China.
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Luska KL, Moores A. Rational size control of gold nanoparticles employing an organometallic precursor [Au-C≡C- t-Bu]4 and tunable thiolate-functionalized ionic liquids in organic medium. CAN J CHEM 2012. [DOI: 10.1139/v11-146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Gold nanoparticles (Au NPs) stabilized with six different thiolate-functionalized ionic liquids (TFILs) were synthesized in an organic solvent. The size and optical properties of the TFIL-stabilized Au NPs can be rationally controlled by altering the N-alkyl chain length and (or) the counteranion of the TFIL-stabilizing ligand. Au NPs were prepared from the reduction of a gold precursor (HAuCl4 or [Au-C≡C-t-Bu]4) employing NaBH4 in the presence of the different disulfide precursors. A model, based on Israelachvili theory, is proposed to account for the dependence of NP size on the N-alkyl chain length and the counteranion of the surfactantlike TFIL stabilizers.
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Affiliation(s)
- Kylie L. Luska
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC H3A 2K6, Canada
| | - Audrey Moores
- Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, QC H3A 2K6, Canada
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Wan PJ, Tan DS, Li ZS, Zhang XQ, Li JH, Tan H. Biomimetic surface preparation of inert polymer films via grafting long monoalkyl chain phosphatidylcholine. CHINESE JOURNAL OF POLYMER SCIENCE 2011. [DOI: 10.1007/s10118-012-1111-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Wicklein B, Darder M, Aranda P, Ruiz-Hitzky E. Phospholipid-sepiolite biomimetic interfaces for the immobilization of enzymes. ACS APPLIED MATERIALS & INTERFACES 2011; 3:4339-48. [PMID: 21970377 DOI: 10.1021/am201000k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Biomimetic interfaces based on phosphatidylcholine (PC) assembled to the natural silicate sepiolite were prepared for the stable immobilization of the urease and cholesterol oxidase enzymes. This is an important issue in practical advanced applications such as biocatalysis or biosensing. The supported lipid bilayer (BL-PC), prepared from PC adsorption, was used for immobilization of enzymes and the resulting biomimetic systems were compared to several other supported layers including a lipid monolayer (ML-PC), a mixed phosphatidylcholine/octyl-galactoside layer (PC-OGal), a cetyltrimethylammonium monolayer (CTA), and also to the bare sepiolite surface. Interfacial characteristics of these layers were investigated with a focus on layer packing density, hydrophilicity/hydrophobicity, and surface charge, which are being considered as key points for enzyme immobilization and stabilization of their biological activity. Cytoplasmic urease and membrane-bound cholesterol oxidase, which served as model enzymes, were immobilized on the different PC-based hybrid materials to probe their biomimetic character. Enzymatic activity was assessed by cyclic voltammetry and UV-vis spectrophotometry. The resulting enzyme/bio-organoclay hybrids were applied as active phase of a voltammetric urea biosensor and cholesterol bioreactor, respectively. Urease supported on sepiolite/BL-PC proved to maintain its enzymatic activity over several months while immobilized cholesterol oxidase demonstrated high reusability as biocatalyst. The results emphasize the good preservation of bioactivity due to the accommodation of the enzymatic system within the biomimetic lipid interface on sepiolite.
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Affiliation(s)
- Bernd Wicklein
- Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain
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Hudalla GA, Murphy WL. Chemically well-defined self-assembled monolayers for cell culture: toward mimicking the natural ECM. SOFT MATTER 2011; 7:9561-9571. [PMID: 25214878 PMCID: PMC4159093 DOI: 10.1039/c1sm05596h] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The extracellular matrix (ECM) is a network of biological macromolecules that surrounds cells within tissues. In addition to serving as a physical support, the ECM actively influences cell behavior by providing sites for cell adhesion, establishing soluble factor gradients, and forming interfaces between different cell types within a tissue. Thus, elucidating the influence of ECM-derived biomolecules on cell behavior is an important aspect of cell biology. Self-assembled monolayers (SAMs) have emerged as promising tools to mimic the ECM as they provide chemically well-defined substrates that can be precisely tailored for specific cell culture applications, and their application in this regard is the focus of this review. In particular, this review will describe various approaches to prepare SAM-based culture substrates via non-specific adsorption, covalent immobilization, or non-covalent sequestering of ECM-derived biomolecules. Additionally, this review will highlight SAMs that present ECM-derived biomolecules to cells to probe the role of these molecules in cell-ECM interactions, including cell attachment, spreading and 'outside-in' signaling via focal adhesion complex formation. Finally, this review will introduce SAMs that can present or sequester soluble signaling molecules, such as growth factors, to study the influence of localized soluble factor activity on cell behavior. Together, these examples demonstrate that the chemical specificity and variability afforded by SAMs can provide robust, well-defined substrates for cell culture that can simplify experimental design and analysis by eliminating many of the confounding factors associated with traditional culture substrates.
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Affiliation(s)
- Gregory A. Hudalla
- Department of Biomedical Engineering, University of Wisconsin, 5009 Wisconsin Institutes of Medical Research, 1111 Highland Ave., Madison, WI, 53705, USA
| | - William L. Murphy
- Department of Biomedical Engineering, University of Wisconsin, 5009 Wisconsin Institutes of Medical Research, 1111 Highland Ave., Madison, WI, 53705, USA
- Department of Pharmacology, University of Wisconsin, 5009 Wisconsin Institutes of Medical Research, 1111 Highland Ave., Madison, WI, 53705, USA
- Department of Orthopedics and Rehabilitation, University of Wisconsin, 5009 Wisconsin Institutes of Medical Research, 1111 Highland Ave., Madison, WI, 53705, USA
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Li J, Chen Y, Wang Z, Ding M, Tan H, Fu Q, Jiang X. Synthesis and self-assembly of an amino-functionalized hybrid hydrocarbon/fluorocarbon double-chain phospholipid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:10859-10866. [PMID: 21682339 DOI: 10.1021/la201610w] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this article, we designed and synthesized an amino-functionalized hybrid hydrocarbon/fluorocarbon double-chain phospholipid (ACFPC) containing one chain with the hydrophobic fluorocarbon chain and terminal amino, amide, and ether linkages and one chain with the hydrocarbon chain. The novel reactive phospholipid was fully characterized with Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR), and mass spectrometry (MS). Then the self-assembly behaviors of the hybrid double-chain phospholipid in aqueous and acidic media were investigated with transmission electron microscopy (TEM), the critical micelle concentration (cmc), dynamic light scattering (DLS), and the hydrocarbon double-chain phospholipid (ACCPC) for comparison. Moreover, their self-assembled structures in aqueous and acidic media were simulated using the dissipative particle dynamics (DPD) method. These results suggest that the fluorocarbon/hydrocarbon hybrid-chain phospholipid can self-assemble into a more stable microstructure compared to the double hydrocarbon chain phospholipid, which will have the potential ability to self-assemble into a more stable minicking biomembrane structure onto material surfaces to inhibit protein adsorption under complicated physiological conditions.
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Affiliation(s)
- Jiehua Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China
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Hassan HHAM, Soliman R. Synthesis and Antimicrobial Activity of Novel 3-Benzyloxy-4-Substituted-2- Azetidinones: Formation of a Hydrophobic Layer Via a Self-Organization Effect. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2011.553208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Hammed H. A. M. Hassan
- a Department of Chemistry, Faculty of Science , Alexandria University , Alexandria, Egypt
| | - Raafat Soliman
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Alexandria University , Alexandria, Egypt
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Liu X, Huang H, Jin Q, Ji J. Mixed charged zwitterionic self-assembled monolayers as a facile way to stabilize large gold nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:5242-5251. [PMID: 21476529 DOI: 10.1021/la2002223] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Here we report a facile way of stabilizing large gold nanoparticles (AuNPs) by mixed charged zwitterionic self-assembled monolayers (SAMs). The citrate-capped AuNPs with diameters ranging from 16 nm to even ∼100 nm are well stabilized via a simple place exchange reaction with a 1:1 molar ratio mixture of negatively charged sodium 10-mercaptodecanesulfonic acid (HS-C10-S) and positively charged (10-mercaptodecyl)-trimethyl-ammonium bromide (HS-C10-N4). The 16 nm AuNPs protected by mixed charged zwitterionic SAMs not only show much better stability than the single negatively or positively charged AuNPs, but also exhibit exciting stability as well as those modified by monohydroxy (1-mercaptoundec-11-yl) tetraethylene glycol (HS-C11-EG4). Importantly, 16 nm AuNPs protected by mixed SAMs exhibit good stability in cell culture medium with 10% FBS and strong protein resistance, especially with excellent resistance against plasma adsorption. Moreover, the mixed charged zwitterionic SAMs are also able to well-stabilize larger AuNPs with a diameter of 50 nm, and to help remarkably improve their stability in saline solution compared with HS-C11-EG4 protected ones. When it comes to AuNPs with a diameter of 100 nm, the mixed charged zwitterionic SAM protected nanoparticles retain a smaller hydrodynamic diameter and even better long-term stability than those modified by mercaptopolyethylene glycol (M(w) = 2000, HS-PEG2000). The above results demonstrated that the mixed charged zwitterionic SAMs are able to have a similar effect on stabilizing the large gold nanoparticles just like the single-component zwitterionic SAMs. Concerning its ease of preparation, versatility, and excellent properties, the strategy based on the mixed charged zwitterionic SAM protection might provide a promising method to surface tailoring of nanoparticles for biomedical application.
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Affiliation(s)
- Xiangsheng Liu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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Mochizuki A, Ogawa T, Okamoto K, Nakatani T, Nitta Y. Blood compatibility of gas plasma-treated diamond-like carbon surface—Effect of physicochemical properties of DLC surface on blood compatibility. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2010.11.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Banerjee I, Pangule RC, Kane RS. Antifouling coatings: recent developments in the design of surfaces that prevent fouling by proteins, bacteria, and marine organisms. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2011; 23:690-718. [PMID: 20886559 DOI: 10.1002/adma.201001215] [Citation(s) in RCA: 1618] [Impact Index Per Article: 115.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 06/06/2010] [Indexed: 05/21/2023]
Abstract
The major strategies for designing surfaces that prevent fouling due to proteins, bacteria, and marine organisms are reviewed. Biofouling is of great concern in numerous applications ranging from biosensors to biomedical implants and devices, and from food packaging to industrial and marine equipment. The two major approaches to combat surface fouling are based on either preventing biofoulants from attaching or degrading them. One of the key strategies for imparting adhesion resistance involves the functionalization of surfaces with poly(ethylene glycol) (PEG) or oligo(ethylene glycol). Several alternatives to PEG-based coatings have also been designed over the past decade. While protein-resistant coatings may also resist bacterial attachment and subsequent biofilm formation, in order to overcome the fouling-mediated risk of bacterial infection it is highly desirable to design coatings that are bactericidal. Traditional techniques involve the design of coatings that release biocidal agents, including antibiotics, quaternary ammonium salts (QAS), and silver, into the surrounding aqueous environment. However, the emergence of antibiotic- and silver-resistant pathogenic strains has necessitated the development of alternative strategies. Therefore, other techniques based on the use of polycations, enzymes, nanomaterials, and photoactive agents are being investigated. With regard to marine antifouling coatings, restrictions on the use of biocide-releasing coatings have made the generation of nontoxic antifouling surfaces more important. While considerable progress has been made in the design of antifouling coatings, ongoing research in this area should result in the development of even better antifouling materials in the future.
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Affiliation(s)
- Indrani Banerjee
- Howard P. Isermann Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
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Zong MM, Gong YK. Fabrication and biocompatibility of cell outer membrane mimetic surfaces. CHINESE JOURNAL OF POLYMER SCIENCE 2010. [DOI: 10.1007/s10118-010-1019-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Jiang S, Cao Z. Ultralow-fouling, functionalizable, and hydrolyzable zwitterionic materials and their derivatives for biological applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:920-32. [PMID: 20217815 DOI: 10.1002/adma.200901407] [Citation(s) in RCA: 1437] [Impact Index Per Article: 95.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In recent years, zwitterionic materials such as poly(carboxybetaine) (pCB) and poly(sulfobetaine) (pSB) have been applied to a broad range of biomedical and engineering materials. Due to electrostatically induced hydration, surfaces coated with zwitterionic groups are highly resistant to nonspecific protein adsorption, bacterial adhesion, and biofilm formation. Among zwitterionic materials, pCB is unique due to its abundant functional groups for the convenient immobilization of biomolecules. pCB can also be prepared in a hydrolyzable form as cationic pCB esters, which can kill bacteria or condense DNA. The hydrolysis of cationic pCB esters into nonfouling zwitterionic groups will lead to the release of killed microbes or the irreversible unpackaging of DNA. Furthermore, mixed-charge materials have been shown to be equivalent to zwitterionic materials in resisting nonspecific protein adsorption when they are uniformly mixed at the molecular scale.
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Affiliation(s)
- Shaoyi Jiang
- Department of Chemical Engineering University of Washington Seattle, WA 98195, USA.
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Wallace D, Quinn EJ, Armstrong DR, Reglinski J, Spicer MD, Smith WE. Surface Science of Soft Scorpionates. Inorg Chem 2010; 49:1420-7. [DOI: 10.1021/ic9014898] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dawn Wallace
- WestChem, Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
| | - Edward J. Quinn
- WestChem, Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
| | - David R. Armstrong
- WestChem, Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
| | - John Reglinski
- WestChem, Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
| | - Mark D. Spicer
- WestChem, Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
| | - W. Ewen Smith
- WestChem, Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, U.K
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Ye SH, Johnson CA, Woolley JR, Oh HI, Gamble LJ, Ishihara K, Wagner WR. Surface modification of a titanium alloy with a phospholipid polymer prepared by a plasma-induced grafting technique to improve surface thromboresistance. Colloids Surf B Biointerfaces 2009; 74:96-102. [PMID: 19647420 PMCID: PMC2811089 DOI: 10.1016/j.colsurfb.2009.06.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2009] [Revised: 06/26/2009] [Accepted: 06/29/2009] [Indexed: 11/29/2022]
Abstract
To improve the thromboresistance of a titanium alloy (TiAl(6)V(4)) surface which is currently utilized in several ventricular assist devices (VADs), a plasma-induced graft polymerization of 2-methacryloyloxyethyl phosphorylcholine (MPC) was carried out and poly(MPC) (PMPC) chains were covalently attached onto a TiAl(6)V(4) surface by a plasma induced technique. Cleaned TiAl(6)V(4) surfaces were pretreated with H(2)O-vapor-plasma and silanated with 3-methacryloylpropyltrimethoxysilane (MPS). Next, a plasma-induced graft polymerization with MPC was performed after the surfaces were pretreated with Ar plasma. Surface compositions were verified by X-ray photoelectron spectroscopy (XPS). In vitro blood biocompatibility was evaluated by contacting the modified surfaces with ovine blood under continuous mixing. Bulk phase platelet activation was quantified by flow cytometric analysis, and surfaces were observed with scanning electron microscopy after blood contact. XPS data demonstrated successful modification of the TiAl(6)V(4) surfaces with PMPC as evidenced by increased N and P on modified surfaces. Platelet deposition was markedly reduced on the PMPC grafted surfaces and platelet activation in blood that contacted the PMPC-grafted samples was significantly reduced relative to the unmodified TiAl(6)V(4) and polystyrene control surfaces. Durability studies under continuously mixed water suggested no change in surface modification over a 1-month period. This modification strategy shows promise for further investigation as a means to reduce the thromboembolic risk associated with the metallic blood-contacting surfaces of VADs and other cardiovascular devices under development.
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Affiliation(s)
- Sang Ho Ye
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Carl A. Johnson
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Joshua R. Woolley
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Heung-Il Oh
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
| | - Lara J. Gamble
- Departments of Bioengineering and NESAC/BIO, University of Washington, Seattle, WA 98195, USA
| | - Kazuhiko Ishihara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - William R. Wagner
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Department of Chemical Engineering, University of Pittsburgh, Pittsburgh, PA 15219, USA
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Ye SH, Johnson CA, Woolley JR, Snyder TA, Gamble LJ, Wagner WR. Covalent surface modification of a titanium alloy with a phosphorylcholine-containing copolymer for reduced thrombogenicity in cardiovascular devices. J Biomed Mater Res A 2009; 91:18-28. [PMID: 18683221 PMCID: PMC3402171 DOI: 10.1002/jbm.a.32184] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Our objective was to develop a surface modification strategy for a titanium alloy (TiAl6V4) to provide thromboresistance for surfaces in rigorous blood-contacting cardiovascular applications, such as that found in ventricular assist devices. We hypothesized that this could be accomplished by the covalent attachment of a phospholipid polymer, poly(2-methacryloyloxyethylphosphorylcholine (MPC)-co-methacryl acid) (PMA). TiAl6V4 was H2O plasma treated by radio frequency glow discharge, silanated with 3-aminopropyltriethoxysilane (APS), and ammonia plasma treated to increase surface reactivity. The TiAl6V4 surface was then modified with PMA via a condensation reaction between the amino groups on the TiAl6V4 surface and the carboxyl groups on PMA. The surface composition was verified by X-ray photoelectron spectroscopy, confirming successful modification of the TiAl6V4 surfaces with APS and PMA as evidenced by increased Si and P. Plasma treatments with H2O and ammonia were effective at further increasing the surface reactivity of TiAl6V4 as evidenced by increased surface PMA. The adsorption of ovine fibrinogen onto PMA-modified surfaces was reduced relative to unmodified surfaces, and in vitro ovine blood contact through a rocking test revealed marked reductions in platelet deposition and bulk phase platelet activation relative to unmodified TiAl6V4 and polystyrene controls. The results indicate that the PMA-modification scheme for TiAl6V4 surfaces offers a potential pathway to improve the thromboresistance of the blood-contacting surfaces of cardiovascular devices.
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Affiliation(s)
- Sang-Ho Ye
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15219, USA
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Tanaka M, Sawaguchi T, Sato Y, Yoshioka K, Niwa O. Synthesis of phosphorylcholine–oligoethylene glycol–alkane thiols and their suppressive effect on non-specific adsorption of proteins. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.04.091] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chung YC, Chen IH, Chen CJ. The surface modification of silver nanoparticles by phosphoryl disulfides for improved biocompatibility and intracellular uptake. Biomaterials 2008; 29:1807-16. [PMID: 18242693 DOI: 10.1016/j.biomaterials.2007.12.032] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2007] [Accepted: 12/23/2007] [Indexed: 11/30/2022]
Abstract
In order to enhance the biocompatibility and cell affinity of metal nanoparticles for biosensing and drug delivering applications, we prepared the phospholipid derivatives containing disulfide groups to modify silver nanoparticle surfaces. By adding sodium borohydride to reduce both disulfide bonds of the derivatives and silver ions simultaneously, the generated thiol groups can be reacted with newborn silver atoms immediately to generate nanoclusters. The assemblies consisted of either phosphorylcholine (PC) or phosphorylethanolamine (PE) head groups, which made the silver clusters biocompatibile. Transmission electron microscope (TEM) and optical absorption spectra assisted in modulating reaction conditions, demonstrating that a surfactant/Ag ratio of 0.4 led to the formation of uniform, well-dispersed spherical particles about 3.8 nm in diameter. X-ray photoelectron spectra and infrared spectra also illustrated the elemental and molecular structures of nanoparticles. The insertion of rhodamine dye into the surfactant layer enabled the nanoparticles to be used as a fluorescent probe. In cell culture tests, the nanoparticles were internalized into platelet or fibroblast cells in a short period of incubation without harming the cells.
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Affiliation(s)
- Yi-Chang Chung
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung, Taiwan, ROC.
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Yang S, Zhang SP, Winnik FM, Mwale F, Gong YK. Group reorientation and migration of amphiphilic polymer bearing phosphorylcholine functionalities on surface of cellular membrane mimicking coating. J Biomed Mater Res A 2008; 84:837-41. [PMID: 17635030 DOI: 10.1002/jbm.a.31418] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Amphiphilic polymers bearing phosphorylcholine (PC) groups can form films of interfacial structure similar to that of the outer membrane of living cells. The films, as prepared, present PC groups to the external aqueous environment and exhibit good biocompatibility. However, under certain conditions, the surface structure can change irreversibly due to the reorientation and deep migration of the surface groups. X-ray photoelectron spectroscopy (XPS), dynamic contact angle measurements, and cell culture experiments were used to investigate the reorientation and migration of the surface groups of an amphiphilic PC-polymer coating. When the polymer surface is immersed into or drawn out of water, significant reorientation and group migration occurs, as suggested by the large difference between the advancing and receding contact angles. Angle-resolved XPS measurements indicate that the hydrophobic groups move to the air/film interface while the hydrophilic groups migrate towards the bulk of the polymer coating. Long periods of aging may result in irreversible changes of the surface structure and decrease the biocompatibility of the materials.
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Affiliation(s)
- Shan Yang
- Department of Chemistry, Northwest University, Xi'an 710069, China
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Chuang WH, Lin JC. Surface characterization and platelet adhesion studies for the mixed self-assembled monolayers with amine and carboxylic acid terminated functionalities. J Biomed Mater Res A 2007; 82:820-30. [PMID: 17326142 DOI: 10.1002/jbm.a.31193] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The mixed self-assembled monolayers (SAM) prepared from long chain alkanethiols, HS(CH(2))(11)NH(2) and HS(CH(2))(10)COOH, on gold are employed as the model surface for investigating the interactions between the biological environment and synthetic surface. A distinctive SAM preparation scheme was utilized in this investigation. The triethylamine was added to the alkanethiol solution during SAM formation and then followed by additional rinsing of SAM with 10% CH(3)COOH or 1% HCl ethanolic solution. The contact angle values of NH(2) + COOH mixed SAMs were between those of the pure SAMs, except that it was prepared with solution mole fraction of amine-terminated alkanethiol at 0.2. X-ray photoelectron spectroscopy (XPS) analysis has indicated that these two distinctive SAM preparation procedures had both resulted in a reduction in oxidized sulfur species on pure --NH(2) terminated SAM. However, the procedure utilizing 1% HCl ethanolic washing solution was more effective in reducing the unbound thiol fraction and to form a pure --NH(2) SAM with better quality. XPS analysis has also revealed that the surface of NH(2) + COOH mixed SAMs was "amine-rich". In vitro platelet adhesion assay has shown that the amount of adherent platelets on pure positive charged --NH(2) terminated SAM is less than that on anionic --COOH terminated counterpart in both acidic ethanolic washing schemes. Moreover, the lowest platelet adhesion density was noted on the mixed SAM surfaces with surface amine mole fraction at 0.51 and 0.57. This finding suggests that the surface charge with near neutrality might be of importance in reducing platelet adhesion and activation on artificial biomaterial.
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Affiliation(s)
- Wen-Hsi Chuang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan 70101
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Brard M, Lainé C, Réthoré G, Laurent I, Neveu C, Lemiègre L, Benvegnu T. Synthesis of Archaeal Bipolar Lipid Analogues: A Way to Versatile Drug/Gene Delivery Systems. J Org Chem 2007; 72:8267-79. [PMID: 17914841 DOI: 10.1021/jo071181r] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A synthetic route for the preparation of symmetrical and unsymmetrical archaeal tetraether-like analogues has been described. The syntheses are based upon the elaboration of hemimacrocyclic tetraether lipid cores from versatile building blocks followed by simultaneous or sequential introduction of polar head groups. Functionalizations of the tetraether lipids with neutral lactose or phosphatidylcholine polar heads and cationic glycine betaine moieties were envisaged both to increase membrane stability and to exhibit interactions with charged nucleic acids. Additionally, mannose and lactose triantennary clusters designed as multivalent ligands for selective interaction with lectin-type receptors were also efficiently synthesized for active cell/tissue targeting.
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Affiliation(s)
- Mickaëlle Brard
- UMR CNRS 6226 Sciences Chimiques de Rennes, Equipe Chimie Organique et Supramoléculaire, Ecole Nationale Supérieure de Chimie de Rennes, Av. Général Leclerc, 35700 Rennes, France
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Jordan SW, Chaikof EL. Novel thromboresistant materials. J Vasc Surg 2007; 45 Suppl A:A104-15. [PMID: 17544031 DOI: 10.1016/j.jvs.2007.02.048] [Citation(s) in RCA: 107] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2007] [Accepted: 02/17/2007] [Indexed: 11/30/2022]
Abstract
The development of a clinically durable small-diameter vascular graft as well as permanently implantable biosensors and artificial organ systems that interface with blood, including the artificial heart, kidney, liver, and lung, remain limited by surface-induced thrombotic responses. Recent breakthroughs in materials science, along with a growing understanding of the molecular events that underlay thrombosis, has led to the design and clinical evaluation of a variety of biologically active coatings that inhibit components of the coagulation pathway and platelet responses by surface immobilization or controlled release of bioactive agents. This report reviews recent progress in generating synthetic thromboresistant surfaces that inhibit (1) protein and cell adsorption, (2) thrombin and fibrin formation, and (3) platelet activation and aggregation.
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Zhang Z, Chen S, Chang Y, Jiang S. Surface grafted sulfobetaine polymers via atom transfer radical polymerization as superlow fouling coatings. J Phys Chem B 2007; 110:10799-804. [PMID: 16771329 DOI: 10.1021/jp057266i] [Citation(s) in RCA: 392] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
One of the sulfobetaine methacrylate (SBMA) monomers, N-(3-sulfopropyl)-N-(methacryloxyethyl)-N,N-dimethylammonium betaine, was polymerized onto initiator-covered gold surfaces using atom transfer radical polymerization (ATRP) to form uniform polymer brushes. Self-assembled monolayers (SAMs) with ATRP initiators were characterized by X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The thickness of grafted poly(SBMA) films was measured by ellipsometry. Fibrinogen adsorption on poly(SBMA) grafted surfaces was measured with a surface plasmon resonance (SPR) sensor. Two approaches were compared to graft ATRP initiators onto gold surfaces for surface polymerization and subsequent protein adsorption on these polymer grafted surfaces. The first was to prepare a SAM from omega-mercaptoundecyl bromoisobutyrate onto a gold surface. Superlow fouling surfaces with well-controlled poly(SBMA) brushes were achieved using this approach (e.g., fibrinogen adsorption <0.3 ng/cm2). The second approach was to react bromoisobutyryl bromide with a hydroxyl-terminated SAM on a gold surface. Although protein adsorption decreased as the density of surface initiators increased, the surface prepared using the second approach was not able to achieve as low protein adsorption as the first approach. Key parameters to achieve superlow fouling surfaces were studied and discussed.
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Affiliation(s)
- Zheng Zhang
- Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, USA
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Kocharova N, Aäritalo T, Leiro J, Kankare J, Lukkari J. Aqueous dispersion, surface thiolation, and direct self-assembly of carbon nanotubes on gold. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:3363-71. [PMID: 17291020 DOI: 10.1021/la0631522] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We report the efficient aqueous dispersion of pristine HiPco single-walled carbon nanotubes (SWNTs) with ionic liquid (IL)-based surfactants 1-dodecyl-3-methylimidazolium bromide (1) and 1-(12-mercaptododecyl)-3-methylimidazolium bromide (2), the thiolation of nanotube sidewalls with 2, and the controlled self-assembly of positively charged SWNT-1,2 composites on gold. Optical absorption spectra and resonance Raman (RR) data of obtained aqueous SWNT-1,2 dispersions are consistent with debundled and noncovalently functionalized nanotubes whose electronic properties have not been disturbed. Additionally, the dispersion of pristine nanotube material with surfactants 1 and 2 leads to a high degree of purification from carbonaceous particles. The chiralities of the 14 smallest semiconducting HiPco SWNTs in resonance with Raman excitation at 1064 nm (1.165 eV) were determined in SWNT-2 aqueous dispersion using UV-vis-NIR and RR spectra. X-ray photoelectron spectroscopy (XPS) and surface-enhanced resonance Raman scattering (SERRS) spectroscopy of SWNT-2 submonolayers on gold verified the encapsulation of individualized SWNTs with IL surfactants, the cleavage of S-S disulfide bonds formed in aqueous SWNT-2 suspensions, and the direct chemisorption of the SWNT-2 composite on bare gold via the Au-S bond. Aqueous dispersions of SWNTs with IL-based surfactants add biofunctionality to carbon nanotubes by imparting the positive surface charge necessary for interactions with cell membranes. Our technique, which purifies pristine nanotube material and produces water-soluble, positively charged nanotubes with pendent surface-active thiol groups, may also be translated to other carbon nanotubes and carbon nanostructures. Self-assembled, positively charged submonolayers of SWNTs can be further used for applications in cell biology and sensor technology.
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Affiliation(s)
- Natalia Kocharova
- Laboratory of Materials Chemistry, Department of Chemistry, University of Turku, 20014 Turku, Finland.
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Kristensen EME, Nederberg F, Rensmo H, Bowden T, Hilborn J, Siegbahn H. Photoelectron spectroscopy studies of the functionalization of a silicon surface with a phosphorylcholine-terminated polymer grafted onto (3-aminopropyl)trimethoxysilane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:9651-7. [PMID: 17073492 DOI: 10.1021/la060586o] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The structure of a biomimetic phosphorylcholine (PC)-functionalized poly(trimethylene carbonate) (PC-PTMC-PC), linked to a silicon substrate through an aminolysis reaction at 120 degrees C with (3-aminopropyl)trimethoxysilane (APTMS), was studied using photoelectron spectroscopy. Two chemical states were found for the unreacted APTMS amine, a neutral state and a protonated state, where the protonated amine on average was situated closer to the silicon substrate than the neutral amine. The experiments also indicated the presence of a third chemical state, where amines interact with unreacted silanol groups. The PTMC chains of the grafted films were found to consist of only 2-3 repeat units, with the grafted chains enriched in the zwitterionic end group, suggesting that these groups are attracted to the surface. This was further supported by the experiments showing that the PC groups were situated deeper within the film.
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Affiliation(s)
- Emma M E Kristensen
- Department of Physics, Box 530, and Department of Materials Chemistry, Polymer Chemistry, Box 538, Uppsala University, SE-751 21 Uppsala, Sweden.
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