1
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Yang MC, O'Connor AJ, Kalionis B, Heath DE. Improvement of Mesenchymal Stromal Cell Proliferation and Differentiation via Decellularized Extracellular Matrix on Substrates With a Range of Surface Chemistries. FRONTIERS IN MEDICAL TECHNOLOGY 2022; 4:834123. [PMID: 35368802 PMCID: PMC8969767 DOI: 10.3389/fmedt.2022.834123] [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: 12/13/2021] [Accepted: 02/09/2022] [Indexed: 12/02/2022] Open
Abstract
Decellularized extracellular matrix (dECM) deposited by mesenchymal stromal cells (MSCs) has emerged as a promising substrate for improved expansion of MSCs. To date, essentially all studies that have produced dECM for MSC expansion have done so on tissue culture plastic or glass. However, substrate surface chemistry has a profound impact on the adsorption of proteins that mediate cell-material interactions, and different surface chemistries can cause changes in cell behavior, ECM deposition, and the in vivo response to a material. This study tested the hypothesis that substrate surface chemistry impacts the deposition of ECM and its subsequent bioactivity. This hypothesis was tested by producing glass surfaces with various surface chemistries (amine, carboxylic acid, propyl, and octyl groups) using silane chemistry. ECM was deposited by an immortalized MSC line, decellularized, and characterized through SDS-PAGE and immunofluorescence microscopy. No significant difference was observed in dECM composition or microarchitecture on the different surfaces. The decellularized surfaces were seeded with primary MSCs and their proliferation and differentiation were assessed. The presence of dECM improved the proliferation of primary MSCs by ~100% in comparison to surface chemistry controls. Additionally, the adipogenesis increased by 50–90% on all dECM surfaces in comparison to surface chemistry controls, and the osteogenesis increased by ~50% on the octyl-modified surfaces when dECM was present. However, no statistically significant differences were observed within the set of dECM surfaces or control surfaces. These results support the null hypothesis, meaning surface chemistry (over the range tested in this work) is not a key regulator of the composition or bioactivity of MSC-derived dECM. These results are significant because they provide an important insight into regenerative engineering technologies. Specifically, the utilization of dECM in stem cell manufacturing and tissue engineering applications would require the dECM to be produced on a wide variety of substrates. This work indicates that it can be produced on materials with a range of surface chemistries without undesired changes in the bioactivity of the dECM.
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Affiliation(s)
- Michael C. Yang
- Department of Biomedical Engineering, University of Melbourne, Parkville, VIC, Australia
- Department of Maternal-Fetal Medicine, Pregnancy Research Centre, Royal Women's Hospital, Parkville, VIC, Australia
| | - Andrea J. O'Connor
- Department of Biomedical Engineering, University of Melbourne, Parkville, VIC, Australia
| | - Bill Kalionis
- Department of Maternal-Fetal Medicine, Pregnancy Research Centre, Royal Women's Hospital, Parkville, VIC, Australia
- Department of Obstetrics and Gynecology, University of Melbourne, Parkville, VIC, Australia
- Bill Kalionis
| | - Daniel E. Heath
- Department of Biomedical Engineering, University of Melbourne, Parkville, VIC, Australia
- *Correspondence: Daniel E. Heath
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2
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Polybetaines in Biomedical Applications. Int J Mol Sci 2021; 22:ijms22179321. [PMID: 34502230 PMCID: PMC8430529 DOI: 10.3390/ijms22179321] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 12/28/2022] Open
Abstract
Polybetaines, that have moieties bearing both cationic (quaternary ammonium group) and anionic groups (carboxylate, sulfonate, phosphate/phosphinate/phosphonate groups) situated in the same structural unit represent an important class of smart polymers with unique and specific properties, belonging to the family of zwitterionic materials. According to the anionic groups, polybetaines can be divided into three major classes: poly(carboxybetaines), poly(sulfobetaines) and poly(phosphobetaines). The structural diversity of polybetaines and their special properties such as, antifouling, antimicrobial, strong hydration properties and good biocompatibility lead to their use in nanotechnology, biological and medical fields, water remediation, hydrometallurgy and the oil industry. In this review we aimed to highlight the recent developments achieved in the field of biomedical applications of polybetaines such as: antifouling, antimicrobial and implant coatings, wound healing and drug delivery systems.
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3
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Zhu Y, Xu G, Song W, Wu M, Yao R, Sadeghzadeh SM. Cu2O Nanocatalysts Immobilized on p(SBMA) for Synergistic CO2 Activation to Afford Esters and Heterocycles at Ambient Pressure. Catal Letters 2021. [DOI: 10.1007/s10562-020-03518-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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4
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Kim S, Heath DE, Kentish SE. Composite Membranes with Nanofibrous Cross-Hatched Supports for Reverse Osmosis Desalination. ACS APPLIED MATERIALS & INTERFACES 2020; 12:44720-44730. [PMID: 32941731 DOI: 10.1021/acsami.0c12588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A novel membrane structure composed of cross-hatched electrospun nanofibers is developed. We illustrate that this novel structure allows for much higher water permeability when used as a support for reverse osmosis thin-film composite membranes. Reinforcement and lamination of the aligned nanofibers generates mechanically robust structures that retain very high porosity and low tortuosity when applied to high pressure desalination operations. The cross-hatched nanofiber layers support the polyamide active layer firmly and reduce resistance to water flow due to the high porosity, low tortuosity, high mechanical strength, and minimal thickness of the structures. The nanofiber composite membrane gives a water flux significantly greater than when a traditional support layer is used, at 99 ± 5 m-2 h-1 with NaCl rejection of 98.7% at 15.5 bar.
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Affiliation(s)
- Seungju Kim
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Daniel E Heath
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Sandra E Kentish
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
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5
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Knowles BR, Yang D, Wagner P, Maclaughlin S, Higgins MJ, Molino PJ. Zwitterion Functionalized Silica Nanoparticle Coatings: The Effect of Particle Size on Protein, Bacteria, and Fungal Spore Adhesion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1335-1345. [PMID: 30086644 DOI: 10.1021/acs.langmuir.8b01550] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The negative impacts that arise from biological fouling of surfaces have driven the development of coatings with unique physical and chemical properties that are able to prevent interactions with fouling species. Here, we report on low-fouling hydrophilic coatings presenting nanoscaled features prepared from different size silica nanoparticles (SiNPs) functionalized with zwitterionic chemistries. Zwitterionic sulfobetaine siloxane (SB) was reacted to SiNPs ranging in size from 7 to 75 nm. Particle stability and grafting density were confirmed using dynamic light scattering and thermogravimetric analysis. Thin coatings of nanoparticles were prepared by spin-coating aqueous particle suspensions. The resulting coatings were characterized using scanning electron microscopy, atomic force microscopy, and contact angle goniometry. SB functionalized particle coatings displayed increased hydrophilicity compared to unmodified particle coating controls while increasing particle size correlated with increased coating roughness and increased surface area. Coatings of zwitterated particles demonstrated a high degree of nonspecific protein resistance, as measured by quartz crystal microgravimetry. Adsorption of bovine serum albumin and hydrophobin proteins were reduced by up to 91 and 94%, respectively. Adhesion of bacteria ( Escherichia coli) to zwitterion modified particle coatings were also significantly reduced over both short and long-term assays. Maximum reductions of 97% and 94% were achieved over 2 and 24 h assay periods, respectively. For unmodified particle coatings, protein adsorption and bacterial adhesion were generally reduced with increasing particle size. Adhesion of fungal spores to SB modified SiNP coatings was also reduced, however no clear trends in relation to particle size were demonstrated.
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Affiliation(s)
- Brianna R Knowles
- ARC Industrial Transformation Research Hub for Australian Steel Manufacturing , Wollongong , New South Wales 2522 , Australia
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , New South Wales 2500 , Australia
- BlueScope Innovation Laboratories , Old Port Road , Port Kembla , New South Wales 2505 , Australia
| | - Dan Yang
- ARC Industrial Transformation Research Hub for Australian Steel Manufacturing , Wollongong , New South Wales 2522 , Australia
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , New South Wales 2500 , Australia
| | - Pawel Wagner
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , New South Wales 2500 , Australia
| | - Shane Maclaughlin
- ARC Industrial Transformation Research Hub for Australian Steel Manufacturing , Wollongong , New South Wales 2522 , Australia
- BlueScope Innovation Laboratories , Old Port Road , Port Kembla , New South Wales 2505 , Australia
| | - Michael J Higgins
- ARC Industrial Transformation Research Hub for Australian Steel Manufacturing , Wollongong , New South Wales 2522 , Australia
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , New South Wales 2500 , Australia
| | - Paul J Molino
- ARC Industrial Transformation Research Hub for Australian Steel Manufacturing , Wollongong , New South Wales 2522 , Australia
- Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, AIIM Facility, Innovation Campus , University of Wollongong , Wollongong , New South Wales 2500 , Australia
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6
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Ishihara K. Blood-Compatible Surfaces with Phosphorylcholine-Based Polymers for Cardiovascular Medical Devices. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1778-1787. [PMID: 30056709 DOI: 10.1021/acs.langmuir.8b01565] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
For the acquisition of blood-compatible materials, various hydrophilic polymers for surface modification have been examined. Among them, polymers with a representative phospholipid polar group, the phosphorylcholine (PC) group, are a successful example. These polymers were designed from inspiration of the cell membrane surface and provide protein adsorption resistance even following contact with plasma. This important property is based on the unique hydration state of water molecules surrounding hydrated polymer; in other words, water molecules weakly interact with the polymers and maintain their favorable cluster structure through hydrogen bonding. These polymers are not only hydrophilic, but also electrically neutral, important characteristics which make hydrogen bonding with water molecules less likely to occur and avoid hydrophobic interactions. Phosphorylcholine groups and other zwitterionic structures are significant as hydrophilic functional groups meeting these important requirements. In this review, blood compatibility of a polymer having a PC group is introduced in relation to its hydration structure, followed by a description of the applications of this polymer to cardiovascular medical devices.
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Affiliation(s)
- Kazuhiko Ishihara
- Department of Materials Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
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7
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Lin WH, Lin CY, Tsai CC, Yu J, Tsai WB. Spheroid Formation of Human Adipose-Derived Stem Cells on Environmentally Friendly BMA/SBMA/HEMA Copolymer-Coated Anti-Adhesive Surface. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20180100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Wei-Han Lin
- Department of Chemical Engineering, National Taiwan University, No. 1, Roosevelt Rd., Sec. 4, Taipei 106, Taiwan
| | - Che-Yu Lin
- Department of Chemical Engineering, National Taiwan University, No. 1, Roosevelt Rd., Sec. 4, Taipei 106, Taiwan
| | - Ching-Cheng Tsai
- Department of Chemical Engineering, National Taiwan University, No. 1, Roosevelt Rd., Sec. 4, Taipei 106, Taiwan
| | - Jiashing Yu
- Department of Chemical Engineering, National Taiwan University, No. 1, Roosevelt Rd., Sec. 4, Taipei 106, Taiwan
| | - Wei-Bor Tsai
- Department of Chemical Engineering, National Taiwan University, No. 1, Roosevelt Rd., Sec. 4, Taipei 106, Taiwan
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8
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P. V. M, Bhatt A, P. R. Sulfobetaine‐functionalized electrospun poly(ethylene‐
co
‐vinyl alcohol) membranes for blood filtration. J Appl Polym Sci 2018. [DOI: 10.1002/app.47057] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Mayuri P. V.
- Division of Polymeric Medical Devices, Department of Medical Devices Engineering, Biomedical Technology WingSree Chitra Tirunal Institute for Medical Sciences and Technology, Satelmond Palace Campus Trivandrum India 695012
| | - Anugya Bhatt
- Division of Thrombosis Research, Department of Applied Biology, Biomedical Technology WingSree Chitra Tirunal Institute for Medical Sciences and Technology, Satelmond Palace Campus Trivandrum India 695012
| | - Ramesh P.
- Division of Polymeric Medical Devices, Department of Medical Devices Engineering, Biomedical Technology WingSree Chitra Tirunal Institute for Medical Sciences and Technology, Satelmond Palace Campus Trivandrum India 695012
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Abstract
Implanting a metal stent plays a key role in treating cardiovascular diseases. However, the high corrosion rate of metal-based devices severely limits their practical applications. Therefore, how to control the corrosion rate is vital to take full advantages of metal-based materials in the treatment of cardiovascular diseases. This review details various methods to design and construct polymer-coated stents. The techniques are described and discussed including plasma deposition, electrospinning, dip coating, layer-by-layer self-assembly, and direct-write inkjet. Key point is provided to highlight current methods and recent advances in hindering corrosion rate and improving biocompatibility of stents, which greatly drives the rising of some promising techniques involved in the ongoing challenges and potential new trends of polymer-coated stents.
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10
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Karimi F, O'Connor AJ, Qiao GG, Heath DE. Integrin Clustering Matters: A Review of Biomaterials Functionalized with Multivalent Integrin-Binding Ligands to Improve Cell Adhesion, Migration, Differentiation, Angiogenesis, and Biomedical Device Integration. Adv Healthc Mater 2018; 7:e1701324. [PMID: 29577678 DOI: 10.1002/adhm.201701324] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 01/24/2018] [Indexed: 01/17/2023]
Abstract
Material systems that exhibit tailored interactions with cells are a cornerstone of biomaterial and tissue engineering technologies. One method of achieving these tailored interactions is to biofunctionalize materials with peptide ligands that bind integrin receptors present on the cell surface. However, cell biology research has illustrated that both integrin binding and integrin clustering are required to achieve a full adhesion response. This biophysical knowledge has motivated researchers to develop material systems biofunctionalized with nanoscale clusters of ligands that promote both integrin occupancy and clustering of the receptors. These materials have improved a wide variety of biological interactions in vitro including cell adhesion, proliferation, migration speed, gene expression, and stem cell differentiation; and improved in vivo outcomes including increased angiogenesis, tissue healing, and biomedical device integration. This review first introduces the techniques that enable the fabrication of these nanopatterned materials, describes the improved biological effects that have been achieved, and lastly discusses the current limitations of the technology and where future advances may occur. Although this technology is still in its nascency, it will undoubtedly play an important role in the future development of biomaterials and tissue engineering scaffolds for both in vitro and in vivo applications.
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Affiliation(s)
- Fatemeh Karimi
- School of Chemical and Biomedical Engineering; Particulate Fluids Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
- Polymer Science Group; Department of Chemical Engineering; Particulate Fluid Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
| | - Andrea J. O'Connor
- School of Chemical and Biomedical Engineering; Particulate Fluids Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
| | - Greg G. Qiao
- Polymer Science Group; Department of Chemical Engineering; Particulate Fluid Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
| | - Daniel E. Heath
- School of Chemical and Biomedical Engineering; Particulate Fluids Processing Centre; University of Melbourne; Parkville VIC 3010 Australia
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11
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Ozcan S, Kaner P, Thomas D, Cebe P, Asatekin A. Hydrophobic Antifouling Electrospun Mats from Zwitterionic Amphiphilic Copolymers. ACS APPLIED MATERIALS & INTERFACES 2018; 10:18300-18309. [PMID: 29658698 DOI: 10.1021/acsami.8b03268] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A porous material that is both hydrophobic and fouling-resistant is needed in many applications, such as water purification by membrane distillation. In this work, we take a novel approach to fabricating such membranes. Using the zwitterionic amphiphilic copolymer poly(trifluoroethyl methacrylate- random-sulfobetaine methacrylate), we electrospin nonwoven, porous membranes that combine high hydrophobicity with resistance to protein adsorption. By changing the electrospinning parameters and the solution composition, membranes can be prepared with a wide range of fiber morphologies including beaded, bead-free, wrinkly, and ribbonlike fibers, with diameters ranging between ∼150 nm and 1.5 μm. The addition of LiCl to the spinning solution not only helps control the fiber morphology but also increases the segregation of zwitterionic groups on the membrane surface. The resultant electrospun membranes are highly porous and very hydrophobic, yet resist the adsorption of proteins and retain a high contact angle (∼140°) even after exposure to a protein solution. This makes these materials promising candidates for the membrane distillation of contaminated wastewater streams and as self-cleaning materials.
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Affiliation(s)
- Sefika Ozcan
- Department of Chemical and Biological Engineering , Tufts University , 4 Colby Street , Medford , Massachusetts 02155 , United States
- Department of Polymer Science and Technology , Middle East Technical University , 06800 Ankara , Turkey
| | - Papatya Kaner
- Department of Chemical and Biological Engineering , Tufts University , 4 Colby Street , Medford , Massachusetts 02155 , United States
| | - David Thomas
- Department of Physics and Astronomy , Tufts University , 574 Boston Avenue , Medford , Massachusetts 02155 , United States
| | - Peggy Cebe
- Department of Physics and Astronomy , Tufts University , 574 Boston Avenue , Medford , Massachusetts 02155 , United States
| | - Ayse Asatekin
- Department of Chemical and Biological Engineering , Tufts University , 4 Colby Street , Medford , Massachusetts 02155 , United States
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12
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Govinna N, Kaner P, Ceasar D, Dhungana A, Moers C, Son K, Asatekin A, Cebe P. Electrospun fiber membranes from blends of poly(vinylidene fluoride) with fouling‐resistant zwitterionic copolymers. POLYM INT 2018. [DOI: 10.1002/pi.5578] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Nelaka Govinna
- Department of Physics and Astronomy Tufts University Medford MA USA
| | - Papatya Kaner
- Department of Chemical and Biological Engineering Tufts University Medford MA USA
| | - Davette Ceasar
- Department of Physics and Astronomy Tufts University Medford MA USA
- Temple University Philadelphia PA USA
| | - Anita Dhungana
- Department of Physics and Astronomy Tufts University Medford MA USA
- Rochester Institute of Technology Rochester NY USA
| | - Cody Moers
- Department of Physics and Astronomy Tufts University Medford MA USA
- Gallaudet University Washington DC USA
| | - Katherine Son
- Department of Physics and Astronomy Tufts University Medford MA USA
- Rochester Institute of Technology Rochester NY USA
| | - Ayse Asatekin
- Department of Chemical and Biological Engineering Tufts University Medford MA USA
| | - Peggy Cebe
- Department of Physics and Astronomy Tufts University Medford MA USA
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13
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Hirasawa M, Tsutsumi-Arai C, Takakusaki K, Oya T, Fueki K, Wakabayashi N. Superhydrophilic co-polymer coatings on denture surfaces reduce Candida albicans adhesion-An in vitro study. Arch Oral Biol 2017; 87:143-150. [PMID: 29291436 DOI: 10.1016/j.archoralbio.2017.12.024] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 11/22/2017] [Accepted: 12/22/2017] [Indexed: 12/27/2022]
Abstract
OBJECTIVE In this study, we aimed to investigate denture-base-resin coatings prepared with a crosslinkable co-polymer containing sulfobetaine methacrylamide (SBMAm) and the relationship between their surface characteristics and the initial adhesion of Candida albicans (C. albicans). METHODS Acrylic resin discs were coated with co-polymers containing various concentrations of SBMAm and N,N'-(4,7,10-trioxa-1,13-tridecadiamine) diacrylamide (JDA) as crosslinking agent. Uncoated discs were used as controls. An acquired pellicle was formed on each disc using artificial saliva, and the discs were immersed in a suspension of C. albicans (JCM2085) cells. After incubation, tetrazolium salt (XTT-reduction) and colony forming unit (CFU) assays were performed and the morphogenesis of C. albicans was examined using scanning electron microscopy (SEM). The surface roughness, film thickness, and the water contact angle of each disc surface were measured. RESULTS All coating groups showed significantly lower amounts of adhered C. albicans in the XTT-reduction and CFU assays than the control, confirmed by the SEM images. Many wrinkle structures were observed on the surfaces coated with co-polymers containing more than 30% SBMAm. There were no significant differences in surface roughness among all groups. The co-polymer films on the coated discs were less than 5.0 μm in thickness, and these surfaces exhibited significantly lower mean water contact angles than the control. CONCLUSION Crosslinkable co-polymers containing SBMAm can enhance the hydrophilicity of the surface of denture-base resins and reduce the initial adhesion of C. albicans.
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Affiliation(s)
- Masahiro Hirasawa
- Department of Removable Partial Prosthodontics, Graduate School, Tokyo Medical and Dental University (TMDU), 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
| | - Chiaki Tsutsumi-Arai
- Department of Oral Medicine and Stomatology, Tsurumi University School of Dental Medicine, 2-1-3, Tsurumi, Tsurumi-ku, Yokohama, Kanagawa, 230-8501, Japan.
| | - Kensuke Takakusaki
- Department of Removable Partial Prosthodontics, Graduate School, Tokyo Medical and Dental University (TMDU), 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
| | - Toyohisa Oya
- Synthetic Organic Chemistry Laboratories, Research & Development Management Headquarters, FUJIFILM Corporation, 210, Nakanuma, Minamiashigara-shi, Kanagawa, 250-0193, Japan.
| | - Kenji Fueki
- Department of Removable Partial Prosthodontics, Graduate School, Tokyo Medical and Dental University (TMDU), 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
| | - Noriyuki Wakabayashi
- Department of Removable Partial Prosthodontics, Graduate School, Tokyo Medical and Dental University (TMDU), 1-5-45, Yushima, Bunkyo-ku, Tokyo, 113-8549, Japan.
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14
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Simon-Walker R, Cavicchia J, Prawel DA, Dasi LP, James SP, Popat KC. Hemocompatibility of hyaluronan enhanced linear low density polyethylene for blood contacting applications. J Biomed Mater Res B Appl Biomater 2017; 106:1964-1975. [PMID: 28963863 DOI: 10.1002/jbm.b.34010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 08/21/2017] [Accepted: 09/01/2017] [Indexed: 12/17/2022]
Abstract
Despite their overall success, different blood-contacting medical devices such as heart valves, stents, and so forth, are still plagued with hemocompatibility issues which often result in the need for subsequent replacement and/or life-long anticoagulation therapy. Consequently, there is a significant interest in developing biomaterials that can address these issues. Polymeric-based materials have been proposed for use in many applications due to their ability to be finely tuned through manufacturing and surface modification to enhance hemocompatibility. In this study, we have developed a novel, hydrophilic biomaterial comprised of an interpenetrating polymer network (IPN) of hyaluronan (HA) and linear low density polyethylene (LLDPE). HA is a highly lubricous, anionic polysaccharide ubiquitously found in the human body. It is currently being investigated for a vast array of biomedical applications including cardiovascular therapies such as hydrogel-based regenerative cell therapies for myocardial infarction, HA-coated stents, and surface modifications of polyurethane and metals for use in blood-contacting implants. The aim of this study was to assess the in vitro thrombogenic response of the hydrophilic polymer surface, HA-LLDPE for future potential use as flexible heart valve leaflets. The results indicate that HA-LLDPE is non-toxic and reduces thromobogenicity as compared to LLDPE surfaces, asserting its feasibility for use as a blood-contacting biomaterial. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1964-1975, 2018.
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Affiliation(s)
- Rachael Simon-Walker
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado
| | - John Cavicchia
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado
| | - David A Prawel
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado.,Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado
| | | | - Susan P James
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado.,Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado
| | - Ketul C Popat
- School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado.,Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado
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15
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Heath DE, Cooper SL. The development of polymeric biomaterials inspired by the extracellular matrix. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:1051-1069. [DOI: 10.1080/09205063.2017.1297285] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Daniel E. Heath
- Department of Chemical and Biomolecular Engineering, Particulate Fluids Processing Centre, The University of Melbourne, Parkville, Australia
| | - Stuart L. Cooper
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
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16
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Affiliation(s)
- Daniel E. Heath
- Department of Chemical and Biomolecular Engineering; Particulate Fluids Processing Centre; The University of Melbourne; Parkville Victoria Australia
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17
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Kusuma GD, Brennecke SP, O’Connor AJ, Kalionis B, Heath DE. Decellularized extracellular matrices produced from immortal cell lines derived from different parts of the placenta support primary mesenchymal stem cell expansion. PLoS One 2017; 12:e0171488. [PMID: 28152107 PMCID: PMC5289638 DOI: 10.1371/journal.pone.0171488] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Accepted: 01/20/2017] [Indexed: 01/02/2023] Open
Abstract
Mesenchymal stem/stromal cells (MSCs) exhibit undesired phenotypic changes during ex vivo expansion, limiting production of the large quantities of high quality primary MSCs needed for both basic research and cell therapies. Primary MSCs retain many desired MSC properties including proliferative capacity and differentiation potential when expanded on decellularized extracellular matrix (dECM) prepared from primary MSCs. However, the need to use low passage number primary MSCs (passage 3 or lower) to produce the dECM drastically limits the utility and impact of this technology. Here, we report that primary MSCs expanded on dECM prepared from high passage number (passage 25) human telomerase reverse transcriptase (hTERT) transduced immortal MSC cell lines also exhibit increased proliferation and osteogenic differentiation. Two hTERT-transduced placenta-derived MSC cell lines, CMSC29 and DMSC23 [derived from placental chorionic villi (CMSCs) and decidua basalis (DMSCs), respectively], were used to prepare dECM-coated substrates. These dECM substrates showed structural and biochemical differences. Primary DMSCs cultured on dECM-DMSC23 showed a three-fold increase in cell number after 14 days expansion in culture and increased osteogenic differentiation compared with controls. Primary CMSCs cultured on the dECM-DMSC23 exhibited a two-fold increase in cell number and increased osteogenic differentiation. We conclude that immortal MSC cell lines derived from different parts of the placenta produce dECM with varying abilities for supporting increased primary MSC expansion while maintaining important primary MSC properties. Additionally, this is the first demonstration of using high passage number cells to produce dECM that can promote primary MSC expansion, and this advancement greatly increases the feasibility and applicability of dECM-based technologies.
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Affiliation(s)
- Gina D. Kusuma
- Pregnancy Research Centre, Department of Maternal-Fetal Medicine, Royal Women’s Hospital, Parkville, Victoria, Australia
- Department of Chemical and Biomolecular Engineering, Particulate Fluids Processing Centre, The University of Melbourne, Parkville, Victoria, Australia
| | - Shaun P. Brennecke
- Pregnancy Research Centre, Department of Maternal-Fetal Medicine, Royal Women’s Hospital, Parkville, Victoria, Australia
- Department of Obstetrics and Gynaecology, Royal Women’s Hospital, The University of Melbourne, Parkville, Victoria, Australia
| | - Andrea J. O’Connor
- Department of Chemical and Biomolecular Engineering, Particulate Fluids Processing Centre, The University of Melbourne, Parkville, Victoria, Australia
| | - Bill Kalionis
- Pregnancy Research Centre, Department of Maternal-Fetal Medicine, Royal Women’s Hospital, Parkville, Victoria, Australia
- Department of Obstetrics and Gynaecology, Royal Women’s Hospital, The University of Melbourne, Parkville, Victoria, Australia
- * E-mail: (BK); (DEH)
| | - Daniel E. Heath
- Department of Chemical and Biomolecular Engineering, Particulate Fluids Processing Centre, The University of Melbourne, Parkville, Victoria, Australia
- * E-mail: (BK); (DEH)
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18
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Karimi F, McKenzie TG, O'Connor AJ, Qiao GG, Heath DE. Nano-scale clustering of integrin-binding ligands regulates endothelial cell adhesion, migration, and endothelialization rate: novel materials for small diameter vascular graft applications. J Mater Chem B 2017; 5:5942-5953. [DOI: 10.1039/c7tb01298e] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Blood contacting devices are commonly used in today's medical landscape.
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Affiliation(s)
- Fatemeh Karimi
- School of Chemical and Biomedical Engineering
- Particulate Fluids Processing Centre
- University of Melbourne
- Melbourne
- Australia
| | - Thomas G. McKenzie
- Polymer Science Group
- Department of Chemical Engineering
- Particulate Fluids Processing Centre
- University of Melbourne
- Melbourne
| | - Andrea J. O'Connor
- School of Chemical and Biomedical Engineering
- Particulate Fluids Processing Centre
- University of Melbourne
- Melbourne
- Australia
| | - Greg G. Qiao
- Polymer Science Group
- Department of Chemical Engineering
- Particulate Fluids Processing Centre
- University of Melbourne
- Melbourne
| | - Daniel E. Heath
- School of Chemical and Biomedical Engineering
- Particulate Fluids Processing Centre
- University of Melbourne
- Melbourne
- Australia
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19
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Brisson ERL, Xiao Z, Franks GV, Connal LA. Versatile Synthesis of Amino Acid Functional Polymers without Protection Group Chemistry. Biomacromolecules 2016; 18:272-280. [DOI: 10.1021/acs.biomac.6b01618] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Emma R. L. Brisson
- Department of Chemical and
Biomolecular Engineering and Particulate
Fluids Processing Centre, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Zeyun Xiao
- Department of Chemical and
Biomolecular Engineering and Particulate
Fluids Processing Centre, The University of Melbourne, Parkville, VIC 3010, Australia
| | - George V. Franks
- Department of Chemical and
Biomolecular Engineering and Particulate
Fluids Processing Centre, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Luke A. Connal
- Department of Chemical and
Biomolecular Engineering and Particulate
Fluids Processing Centre, The University of Melbourne, Parkville, VIC 3010, Australia
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20
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Chen H, Zhao C, Zhang M, Chen Q, Ma J, Zheng J. Molecular Understanding and Structural-Based Design of Polyacrylamides and Polyacrylates as Antifouling Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3315-3330. [PMID: 26986442 DOI: 10.1021/acs.langmuir.6b00386] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Design and synthesis of highly bioinert and biocompatible antifouling materials are crucial for a broad range of biomedical and engineering applications. Among antifouling materials, polyacrylamides and polyacrylates have proved so promising because of cheap raw materials, ease of synthesis and applicability, and abundant functional groups. The strong surface hydration and the high surface packing density of polyacrylamides and polyacrylates are considered to be the key contributors to their antifouling property. In this article, we review our studies on the design and synthesis of a series of polyacrylamides and polyacrylates with different molecular structures. These polymers can be fabricated into different architectural forms (brushes, nanoparticles, nanogels, and hydrogels), all of which are highly resistant to the attachment of proteins, cells, and bacteria. We find that small structural changes in the polymers can lead to large enhancement in surface hydration and antifouling performance, both showing a positive correlation. This reveals a general design rule for effective antifouling materials. Furthermore, polyacrylamides and polyacrylates are readily functionalized with other bioactive compounds to achieve different new multifunctionalities.
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Affiliation(s)
- Hong Chen
- Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
| | - Chao Zhao
- Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
| | - Mingzhen Zhang
- Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
| | - Qiang Chen
- Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
- School of Material Science and Engineering, Henan Polytechnic University , Jiaozuo 454003, China
| | - Jie Ma
- Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University , Shanghai 200092, China
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
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21
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Vasantha VA, Zainul Rahim SZ, Jayaraman S, Junyuan GH, Puniredd SR, Ramakrishna S, Teo SLM, Parthiban A. Antibacterial, electrospun nanofibers of novel poly(sulfobetaine) and poly(sulfabetaine)s. J Mater Chem B 2016; 4:2731-2738. [DOI: 10.1039/c6tb00595k] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zwitterionic polymers have gained increasing attention due to their ability to form environmentally friendly antifouling surfaces.
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Affiliation(s)
- Vivek Arjunan Vasantha
- Institute of Chemical and Engineering Sciences (ICES)
- Agency for Science
- Technology and Research (A*STAR)
- Singapore 627833
| | - Siti Zarina Zainul Rahim
- Tropical Marine Science Institute
- National University of Singapore
- Singapore 119227
- Department of Biological Sciences
- National University of Singapore
| | - Sundaramurthy Jayaraman
- Environmental & Water Technology Centre of Innovation
- Ngee Ann Polytechnic
- Singapore 599489
- Department of Mechanical Engineering
- National University of Singapore
| | - Gabriel Han Junyuan
- Environmental & Water Technology Centre of Innovation
- Ngee Ann Polytechnic
- Singapore 599489
| | - Sreenivasa Reddy Puniredd
- Institute of Materials Research and Engineering (IMRE)
- Agency for Science
- Technology and Research (A*STAR)
- Singapore 138634
| | - Seeram Ramakrishna
- Department of Mechanical Engineering
- National University of Singapore
- Singapore 117576
| | - Serena Lay-Ming Teo
- Department of Biological Sciences
- National University of Singapore
- Singapore 117543
| | - Anbanandam Parthiban
- Institute of Chemical and Engineering Sciences (ICES)
- Agency for Science
- Technology and Research (A*STAR)
- Singapore 627833
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22
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Ajmal M, Demirci S, Siddiq M, Aktas N, Sahiner N. Betaine microgel preparation from 2-(methacryloyloxy) ethyl] dimethyl (3-sulfopropyl) ammonium hydroxide and its use as a catalyst system. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.09.028] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Wang J, Li J, Yang H, Zhu C, Yang J, Yao F. Preparation and characterization of protein resistant zwitterionic starches: The effect of substitution degrees. STARCH-STARKE 2015. [DOI: 10.1002/star.201500083] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jinmei Wang
- School of Chemical Engineering and Technology; Tianjin University; Tianjin P. R. China
| | - Junjie Li
- Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences and Tissue Engineering Research Center; Academy of Military Medical Science; Beijing P. R. China
| | - Huaming Yang
- School of Chemical Engineering and Technology; Tianjin University; Tianjin P. R. China
| | - Chuanshun Zhu
- Key Laboratory of Bioactive Materials, Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, Collage of Life Sciences; Nankai University; Tianjin P. R. China
| | - Jun Yang
- Key Laboratory of Bioactive Materials, Ministry of Education, State Key Laboratory of Medicinal Chemical Biology, Collage of Life Sciences; Nankai University; Tianjin P. R. China
| | - Fanglian Yao
- School of Chemical Engineering and Technology; Tianjin University; Tianjin P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin P. R. China
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24
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Heath DE, Sharif ARM, Ng CP, Rhoads MG, Griffith LG, Hammond PT, Chan-Park MB. Regenerating the cell resistance of micromolded PEG hydrogels. LAB ON A CHIP 2015; 15:2073-2089. [PMID: 25813089 DOI: 10.1039/c4lc01416b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Polydimethylsiloxane stamp materials used during soft lithography undermine the non-fouling behaviour of bio-inert PEG-based hydrogels, resulting in increased protein adsorption and cell adhesion and migration on the gel. This previously unreported phenomenon undermines the function of lab-on-a-chip devices that require the device to be bio-inert, and slows the implementation of promising micromolding and imprinting methods for 3D culture and commercial cell culture systems. We illustrate that the degree of cell adhesion and protein adsorption to the gels correlates with the amount of residual stamp material remaining at the hydrogel interface after fabrication. After identifying this previously unreported phenomenon, we screened multiple polymer cleaning/fabrication techniques in order to maintain/restore the non-fouling properties of the gels including PDMS curing and extraction, use of other common soft lithography stamp materials, post-fabrication cleaning of the hydrogels, and changing the composition of the hydrogel. The optimal solution was determined to be incorporation of reactive sites into the hydrogel during micromolding followed by grafting of PEG macromers to these sites post-fabrication. This treatment resulted in micromolded hydrogels with robust cell resistant properties. Broadly, this work identifies and solves a previously unreported problem in hydrogel micromolding, and specifically reports the development of a cell culture platform that when combined with video microscopy enables high-resolution in situ study of single cell behaviour during in vitro culture.
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Affiliation(s)
- Daniel E Heath
- BioSystems and Micromechanics IRG, Singapore-MIT Alliance for Research and Technology, 3 Science Drive 2, Singapore 117543
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25
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Kwaśniewska D, Staszak K, Wieczorek D, Zieliński R. Synthesis and Interfacial Activity of Novel Heterogemini Sulfobetaines in Aqueous Solution. J SURFACTANTS DETERG 2014; 18:477-486. [PMID: 25814830 PMCID: PMC4371128 DOI: 10.1007/s11743-014-1663-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 12/16/2014] [Indexed: 11/23/2022]
Abstract
Three new heterogemini sulfobetaines and their chloride salts were synthesised. The interfacial activities of the obtained chlorides in aqueous solution were studied by equilibrium and dynamic surface tension measurements. The critical micelle concentration, surface excess concentration, minimum area per surfactant molecule and standard Gibbs energy of adsorption as well as micelle lifetime and diffusion coefficient were determined. The adsorption properties and micelle lifetime of these compounds significantly depend on the length of alkyl chain. The critical micelle concentration decreases with increasing chain length of the compounds considered. The values of the diffusion coefficient of N-alkyl-N-methyl-N-(3-sulfopropyl)-6-(N-alkyl-N-methylamino)hexylammonium chloride tend to decrease as the concentration is increased.
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Affiliation(s)
- Dobrawa Kwaśniewska
- Department of Technology and Instrumental Analysis, Faculty of Commodity Science, Poznań University of Economics, al. Niepodległości 10, 61-875 Poznan, Poland
| | - Katarzyna Staszak
- Institute of Technology and Chemical Engineering, Poznan University of Technology, pl. Skłodowskiej-Curie 2, 60-965 Poznan, Poland
| | - Daria Wieczorek
- Department of Technology and Instrumental Analysis, Faculty of Commodity Science, Poznań University of Economics, al. Niepodległości 10, 61-875 Poznan, Poland
| | - Ryszard Zieliński
- Department of Technology and Instrumental Analysis, Faculty of Commodity Science, Poznań University of Economics, al. Niepodległości 10, 61-875 Poznan, Poland
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26
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Liu L, Li W, Liu Q. Recent development of antifouling polymers: structure, evaluation, and biomedical applications in nano/micro-structures. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2014; 6:599-614. [DOI: 10.1002/wnan.1278] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 04/25/2014] [Accepted: 05/09/2014] [Indexed: 12/19/2022]
Affiliation(s)
- Lingyun Liu
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron OH USA
| | - Wenchen Li
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron OH USA
| | - Qingsheng Liu
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron OH USA
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27
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Liu Q, Li W, Wang H, Liu L. A facile method of using sulfobetaine-containing copolymers for biofouling resistance. J Appl Polym Sci 2014. [DOI: 10.1002/app.40789] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Qingsheng Liu
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron Ohio 44325
| | - Wenchen Li
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron Ohio 44325
| | - Hua Wang
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron Ohio 44325
| | - Lingyun Liu
- Department of Chemical and Biomolecular Engineering; University of Akron; Akron Ohio 44325
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28
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Wang X, Miao J, Shao X, Mao C, Shen J. Zwitterionic hyperbranched polyester functionalized cardiovascular stent and its biocompatibility. J Colloid Interface Sci 2014; 420:88-96. [DOI: 10.1016/j.jcis.2014.01.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 01/10/2014] [Accepted: 01/10/2014] [Indexed: 12/26/2022]
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29
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Chien HW, Tsai CC, Tsai WB, Wang MJ, Kuo WH, Wei TC, Huang ST. Surface conjugation of zwitterionic polymers to inhibit cell adhesion and protein adsorption. Colloids Surf B Biointerfaces 2013; 107:152-9. [DOI: 10.1016/j.colsurfb.2013.01.071] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/23/2013] [Accepted: 01/25/2013] [Indexed: 11/29/2022]
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30
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Wang X, Chen X, Xing L, Mao C, Yu H, Shen J. Blood compatibility of a new zwitterionic bare metal stent with hyperbranched polymer brushes. J Mater Chem B 2013; 1:5036-5044. [DOI: 10.1039/c3tb20855a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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