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Uwaezuoke O, Kumar P, du Toit LC, Ally N, Choonara YE. Design Characteristics of a Neoteric, Superhydrophilic, Mechanically Robust Hydrogel Engineered To Limit Fouling in the Ocular Environment. ACS OMEGA 2024; 9:31410-31426. [PMID: 39072132 PMCID: PMC11270697 DOI: 10.1021/acsomega.4c00228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 04/22/2024] [Accepted: 05/20/2024] [Indexed: 07/30/2024]
Abstract
Current challenges with ocular drug delivery and the chronic nature of many ocular ailments render the use of traditional ocular devices for additional drug delivery purposes very attractive. To achieve this feat, there is the need to develop biomaterials that are biocompatible, mechanically robust for ocular applications, highly transparent (depending on the targeted ocular device), and with ultralow protein adhesion potential (the primary step in processes that lead to fouling and potential device failure). Herein is reported the facile synthesis of a novel, highly transparent, mechanically robust, nontoxic, bulk functionalized hydrogel with characteristics suited to scalable fabrication of ocular implantable and nonimplantable devices. Synergistic superhydrophilicity between methacrylated poly(vinyl alcohol) (PVAGMA) and zwitterionic sulfobetaine methacrylate was exploited to obtain a superhydrophilic polymer conjugate through facile photoinitiated cross-linking polymerization. Proton nuclear magnetic resonance (1H NMR), attenuated total reflectance-Fourier transform infrared spectroscopy (ATF-FTIR), X-ray powder diffraction (XRD), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) were used to confirm the synthesis and establish the physicochemical parameters for both the starting materials, the conjugated polymer, and the hydrogels. Cytotoxicity and cell adhesion potential evaluated in primary human retinal epithelial cells showed no toxicity or adhesion of the ocular cells. Biofilm adhesion studies in Escherichia coli and Staphylococcus aureus showed over 85% reduction in biofilm adhesion for the best-modified polymer compared to the unconjugated PVAGMA, highlighting its antifouling potential.
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Affiliation(s)
- Onyinye
J. Uwaezuoke
- Wits
Advanced Drug Delivery Platform Research Unit, School of Therapeutic
Sciences, Faculty of Health Sciences, University
of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Pradeep Kumar
- Wits
Advanced Drug Delivery Platform Research Unit, School of Therapeutic
Sciences, Faculty of Health Sciences, University
of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Lisa C. du Toit
- Wits
Advanced Drug Delivery Platform Research Unit, School of Therapeutic
Sciences, Faculty of Health Sciences, University
of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Naseer Ally
- Department
of Neurosciences, Division of Ophthalmology, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Yahya E. Choonara
- Wits
Advanced Drug Delivery Platform Research Unit, School of Therapeutic
Sciences, Faculty of Health Sciences, University
of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
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Ouyang T, Su S, Deng H, Liu Y, Cui L, Rong J, Zhao J. Superhydrophilic Poly(2-hydroxyethyl methacrylate) Hydrogel with Nanosilica Covalent Coating: A Promising Contact Lens Material for Resisting Tear Protein Deposition and Bacterial Adhesion. ACS Biomater Sci Eng 2023; 9:5653-5665. [PMID: 37736672 DOI: 10.1021/acsbiomaterials.3c00856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
Tear protein deposition and bacterial adhesion are the main drawbacks of the hydrogel contact lens. In this study, we developed a novel superhydrophilic poly(2-hydroxyethyl methacrylate) (NSCC-pHEMA) hydrogel with nanosilica covalent coating by the combination of colloidal silica immersion and dehydration treatment. The infrared spectroscopy and energy dispersive X-ray spectroscopy analyses confirmed the successful formation of Si-O covalent bonding between nanosilica and pHEMA hydrogel. This coating was highly stable against powerful sonication or long-term shaking immersion treatment. Among various NSCC-pHEMA hydrogels with different colloidal silica concentrations, the 7%NSCC-pHEMA hydrogel generated a superhydrophilic micro wrinkle surface with a root-mean-square roughness of 43.10 nm, which dramatically reduced the deposition of lysozyme and bovine serum albumin by 65% and 57%, respectively, and decreased the adhesion of S. aureus and E. coli by 59% and 66%, respectively, in comparison to the pHEMA hydrogel. However, the nanosilica coating had little effect on the mechanical properties, light transmittance, oxygen permeability, and equilibrium water content of the pHEMA hydrogel. NSCC-pHEMA hydrogels were nontoxic to both mouse fibroblasts (L929) and human immortalized keratinocytes (HaCaT). Thus, the superhydrophilic NSCC-pHEMA hydrogel is a potential contact lens material for resisting tear protein deposition and bacterial adhesion.
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Affiliation(s)
- Tao Ouyang
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
| | - Shuxian Su
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
| | - Haotian Deng
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
| | - Yuying Liu
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
| | - Lishu Cui
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
| | - Jianhua Rong
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
- Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 511436, China
| | - Jianhao Zhao
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
- Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 511436, China
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Wesley G, Giedd B, Hines B, Bickle K, Pearson C, Lorentz H. Safety and Efficacy of a New Water Gradient Biomimetic Monthly Replacement Spherical Contact Lens Material (Lehfilcon A). Clin Ophthalmol 2022; 16:2873-2884. [PMID: 36065354 PMCID: PMC9440676 DOI: 10.2147/opth.s362926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/15/2022] [Indexed: 11/25/2022] Open
Abstract
Purpose The objective of this study was to evaluate the safety and performance of the investigational lens, lehfilcon A, when worn in a daily wear modality and replaced monthly as compared to the commercially available comfilcon A contact lens. Methods This was a multicenter, prospective, controlled, double-masked, randomized, parallel-group clinical study with bilateral lens wear for 3 months. In all, 115 subjects completed the study (77 with test lehfilcon A and 38 with control comfilcon A contact lenses). Distance visual acuity (VA) was assessed using Snellen VA. Lens performance was assessed by examining lens fit/movement, centration, front surface wettability and front/back surface deposits using slit-lamp biomicroscopy. Results At the 3-month follow-up visit, all eyes had a distance VA of 20/20 or better. Further, lens fit/movement was assessed as optimal in 92.9% of the eyes with lehfilcon A and 89.2% with comfilcon A. There were no ratings of unacceptably tight or loose fits for either contact lens material. Lens centration was assessed as optimal in 98.7% of eyes with lehfilcon A and 94.6% with comfilcon A. For front and back surface deposits, both materials showed minimal lens surface deposits. Front surface wettability was assessed as grade 0 or 1 for most of the study lenses in both lens groups across all attended study visits. There were no ocular adverse events related to the study lenses. Conclusion Overall, lehfilcon A showed excellent VA, optimal lens fitting characteristics, a clean surface, high wettability, and low risk for adverse events after 3 months of lens wear.
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Affiliation(s)
| | - Brad Giedd
- Kindred Optics at Maitland Vision, Maitland, FL, USA
| | | | | | | | - Holly Lorentz
- Alcon Research, LLC, Johns Creek, GA, USA
- Correspondence: Holly Lorentz, Alcon Research, LLC, 11460 Johns Creek Pkwy, Johns Creek, GA, 30097, USA, Tel +1 678 415 5272, Email
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Fu Y, Wu Q, Yang W, Liu S. Synthesis and Properties of Hydrogels on Medical Titanium Alloy Surface by Modified Dopamine Adhesion. Gels 2022; 8:gels8080458. [PMID: 35892717 PMCID: PMC9331872 DOI: 10.3390/gels8080458] [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: 06/26/2022] [Revised: 07/11/2022] [Accepted: 07/19/2022] [Indexed: 02/05/2023] Open
Abstract
Medical titanium alloy Ti-6Al-4V (TC4) is an ideal surgical implant material for human tissue repair and replacement. TC4 implantation will be in close contact with human soft tissue and has mechanical compatibility problems. In order to solve this problem, the hydrogel was formed on the surface of TC4 by utilizing the adhesion of dopamine, and the storage modulus of the formed hydrogel matched that of human soft tissue. In this paper, the surface of TC4 was first modified with dopamine (DA) and 2-bromoisobutyryl bromide (BIBB). 2-(2-methoxyethoxy) ethyl methacrylate (MEO2MA), oligo (ethylene oxide) methacrylate (OEGMA) and 2-methacryloyloxyethyl phosphorylcholine (MPC) are used as monomers, and methylenebisacrylamide (MBA) is used as cross-linking agent. Thermosensitive hydrogels were formed on the surface of modified TC4 by the ATRP technique. The successful synthesis of initiator and hydrogels on TC4 was demonstrated by Fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS). The morphology of the hydrogel was observed by the scanning electron microscope (SEM), and the water absorption and temperature sensitivity were investigated by the swelling property. The thermal and mechanical properties of these gels were measured using thermal analysis system (TAS) and dynamic mechanical analyzer (DMA). The results show that the hydrogel on TC4 has good thermal stability and storage modulus that matches human soft tissue.
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Lin X, Liu J, Zhou F, Ou Y, Rong J, Zhao J. Poly(2-hydroxyethyl methacrylate-co-quaternary ammonium salt chitosan) hydrogel: A potential contact lens material with tear protein deposition resistance and antimicrobial activity. BIOMATERIALS ADVANCES 2022; 136:212787. [PMID: 35929300 DOI: 10.1016/j.bioadv.2022.212787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 03/17/2022] [Accepted: 04/01/2022] [Indexed: 06/15/2023]
Abstract
Tear protein deposition resistance and antimicrobial property are two challenges of conventional poly(2-hydroxyethyl methacrylate) (pHEMA) contact lenses. In this work, we developed a poly(2-hydroxyethyl methacrylate-co-quaternary ammonium salt chitosan) hydrogel, named as p(HEMA-co-mHACC) hydrogel, using acryloyl HACC (mHACC) as a macromolecular crosslinker. With increasing the acryloyl substitution degree (14-29%) or mHACC content (2-11%), the hydrogel showed an enhanced tensile strength (432-986 kPa) and Young's modulus (360-1158 kPa), a decreased elongation at break (242-84%), and an increased visible light transmittance (0-95%). At an optimal acryloyl substitution degree of 26%, with the increase of mHACC content from 2% to 11%, p(HEMA-co-mHACC) hydrogel presented a decreased water contact angle from 84.6 to 55.3 degree, an increased equilibrium water content from 38% to 45%, and an enhanced oxygen permeability from 8.5 to 13.5 barrer. Due to the enhancement in surface hydrophilicity and electropositivity, p(HEMA-co-mHACC) hydrogel remarkably reduced the deposition of lysozyme, but little affected the adsorption of BSA, depending on the hydrophilic/hydrophobic and electrostatic interactions. The antimicrobial test against Staphylococcus aureus and Escherichia coli showed that p(HEMA-co-mHACC) hydrogel presented an 8-32 times higher germicidal ability than pHEMA hydrogel, indicative of a better antimicrobial activity. The in vitro cell culture of mouse NIH3T3 fibroblasts and immortalized human keratinocytes showed that p(HEMA-co-mHACC) hydrogel was non-toxic. Thus, p(HEMA-co-mHACC) hydrogel with tear protein deposition resistance and antimicrobial activity is a potential candidate for contact lenses.
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Affiliation(s)
- Xilin Lin
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
| | - Jinqiang Liu
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
| | - Fei Zhou
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
| | - Yangtao Ou
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China
| | - Jianhua Rong
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China; Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 511436, China
| | - Jianhao Zhao
- Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 511436, China; Engineering Research Center of Artificial Organs and Materials, Ministry of Education, Guangzhou 511436, China.
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6
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Ramy S, Ueda Y, Nakajima H, Hiroi M, Hiroi Y, Torisu T, Uchiyama S. Reduction of Recombinant Adeno-Associated Virus Vector Adsorption on Solid Surfaces by Polyionic Hydrophilic Complex Coating. J Pharm Sci 2021; 111:663-671. [PMID: 34706282 DOI: 10.1016/j.xphs.2021.10.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/20/2021] [Accepted: 10/20/2021] [Indexed: 12/19/2022]
Abstract
Recombinant adeno-associated virus (rAAV) vectors have proven efficacy as gene therapy vehicles. However, non-specific adsorption of these vectors on solid surfaces is encountered during production, storage, and administration, as well as in quantification processes. Such adsorption has been reported to result in the loss of up to 90% of vector particles and can also result in high variability in vector genome quantification. In this study, we demonstrate the effective decrease of recombinant adeno-associated virus vector adsorption by application of a polyionic hydrophilic complex polymer coating on the surfaces of the tools used in viral vector quantification analyses [i.e., pipette tips, cryotube vials, and quantitative polymerase chain reaction (qPCR) plates]. qPCR analyses showed efficient recovery of vector particles from tools with this coating, with up to 95% of vector particle loss being prevented, leading to a higher transduction efficiency in vitro. Thus, the tested coating has the potential to be widely used in material processing in the gene therapy field.
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Affiliation(s)
- Salama Ramy
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yuki Ueda
- Nissan Chemical Corporation, Tokyo, Japan
| | | | - Miya Hiroi
- Nissan Chemical Corporation, Tokyo, Japan
| | | | - Tetsuo Torisu
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Susumu Uchiyama
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Life and Living Systems (ExCELLS), National Institutes of Natural Sciences, 5-1 Higashiyama, Myodaiji-cho, Okazaki, Aichi, 444-8787, Japan.
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7
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Evaluation of In Vitro Wettability of Soft Contact Lenses Using Tear Supplements. Eye Contact Lens 2021; 47:244-248. [PMID: 32443004 DOI: 10.1097/icl.0000000000000698] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To evaluate the interaction between tear supplements and soft contact lenses (SCLs), we measured the contact angles (CAs) on the SCLs using commercially available tear supplements. METHODS We used four daily disposable conventional hydrogel lenses (etafilcon A, etafilcon A+ polyvinylpyrrolidone, nelfilcon A, and omafilcon A containing 2-methacryloyloxyethyl phosphorylcholine [MPC]) and four silicone hydrogel lenses (narafilcon A, senofilcon A, delefilcon A, and stenfilcon A). The CAs on the SCLs were measured using a sessile drop technique and four different types of sessile drops, including saline, artificial tears, lubricants containing 2-MPC (MPC solution), and 0.1% hyaluronate acid (HA). RESULTS The CA values associated with the silicone hydrogel lenses were significantly (P<0.001) lower than those associated with the conventional hydrogel lenses with all four solutions. The mean CA of 0.1% HA was significantly (P<0.01) higher than that of saline. The mean CA of the MPC solution was significantly (P<0.01) lower than that of saline with the conventional hydrogel lenses but significantly (P<0.05) higher than that of saline with the silicone hydrogel lenses. CONCLUSIONS The CAs associated with the silicone hydrogel SCLs were higher with the use of the MPC solutions and HA in vitro. The measured CAs may depend on ingredient agents, surface treatment of the CLs, and components of the tear supplements.
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Ishihara K, Fukazawa K, Sharma V, Liang S, Shows A, Dunbar DC, Zheng Y, Ge J, Zhang S, Hong Y, Shi X, Wu JY. Antifouling Silicone Hydrogel Contact Lenses with a Bioinspired 2-Methacryloyloxyethyl Phosphorylcholine Polymer Surface. ACS OMEGA 2021; 6:7058-7067. [PMID: 33748619 PMCID: PMC7970573 DOI: 10.1021/acsomega.0c06327] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 02/03/2021] [Indexed: 05/24/2023]
Abstract
Inspired by the cell membrane surface as well as the ocular tissue, a novel and clinically applicable antifouling silicone hydrogel contact lens material was developed. The unique chemical and biological features on the surface on a silicone hydrogel base substrate were achieved by a cross-linked polymer layer composed of 2-methacryloyloxyethyl phosphorylcholine (MPC), which was considered important for optimal on-eye performance. The effects of the polymer layer on adsorption of biomolecules, such as lipid and proteins, and adhesion of cells and bacteria were evaluated and compared with several conventional silicone hydrogel contact lens materials. The MPC polymer layer provided significant resistance to lipid deposition as visually demonstrated by the three-dimensional confocal images of whole contact lenses. Also, fibroblast cell adhesion was decreased to a 1% level compared with that on the conventional silicone hydrogel contact lenses. The movement of the cells on the surface of the MPC polymer-modified lens material was greater compared with other silicone hydrogel contact lenses indicating that lubrication of the contact lenses on ocular tissue might be improved. The superior hydrophilic nature of the MPC polymer layer provides improved surface properties compared to the underlying silicone hydrogel base substrate.
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Affiliation(s)
- Kazuhiko Ishihara
- Department
of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kyoko Fukazawa
- Department
of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Vinay Sharma
- Alcon
Vision LLC, Fort Worth, Texas 76134, United States
| | - Shuang Liang
- Alcon
Vision LLC, Fort Worth, Texas 76134, United States
| | - Amanda Shows
- Alcon
Vision LLC, Fort Worth, Texas 76134, United States
| | | | - Yang Zheng
- Alcon
Vision LLC, Duluth, Georgia 30097, United
States
| | - Junhao Ge
- Alcon
Vision LLC, Duluth, Georgia 30097, United
States
| | - Steve Zhang
- Alcon
Vision LLC, Duluth, Georgia 30097, United
States
| | - Ye Hong
- Alcon
Vision LLC, Duluth, Georgia 30097, United
States
| | - Xinfeng Shi
- Alcon
Vision LLC, Fort Worth, Texas 76134, United States
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Fouling in ocular devices: implications for drug delivery, bioactive surface immobilization, and biomaterial design. Drug Deliv Transl Res 2021; 11:1903-1923. [PMID: 33454927 DOI: 10.1007/s13346-020-00879-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/24/2020] [Indexed: 10/22/2022]
Abstract
The last 30 years has seen a proliferation of research on protein-resistant biomaterials targeted at designing bio-inert surfaces, which are prerequisite for optimal performance of implantable devices that contact biological fluids and tissues. These efforts have only been able to yield minimal results, and hence, the ideal anti-fouling biomaterial has remained elusive. Some studies have yielded biomaterials with a reduced fouling index among which high molecular weight polyethylene glycols have remained dominant. Interestingly, the field of implantable ocular devices has not experienced an outflow of research in this area, possibly due to the assumption that biomaterials tested in other body fluids can be translated for application in the ocular space. Unfortunately, progression in the molecular understanding of many ocular conditions has brought to the fore the need for treatment options that necessitates the use of anti-fouling biomaterials. From the earliest implanted horsehair and silk seton for glaucoma drainage to the recent mini telescopes for sight recovery, this review provides a concise incursion into the gradual evolution of biomaterials for the design of implantable ocular devices as well as approaches used to overcome the challenges with fouling. The implication of fouling for drug delivery, the design of immune-responsive biomaterials, as well as advanced surface immobilization approaches to support the overall performance of implantable ocular devices are also reviewed.
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10
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Yin H, King DR, Sun TL, Saruwatari Y, Nakajima T, Kurokawa T, Gong JP. Polyzwitterions as a Versatile Building Block of Tough Hydrogels: From Polyelectrolyte Complex Gels to Double-Network Gels. ACS APPLIED MATERIALS & INTERFACES 2020; 12:50068-50076. [PMID: 33085900 DOI: 10.1021/acsami.0c15269] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The high water content of hydrogels makes them important as synthetic biomaterials, and tuning the mechanical properties of hydrogels to match those of natural tissues without changing chemistry is usually difficult. In this study, we have developed a series of hydrogels with varied stiffness, strength, and toughness based on a combination of poly(2-acrylamido-2-methylpropane sulfonic acid) (PAMPS), a strong acidic polyelectrolyte, and poly-N-(carboxymethyl)-N,N-dimethyl-2-(methacryloyloxy) ethanaminium) (PCDME), a polyzwitterion with a weak acidic moiety. We demonstrate that modifying the true molar ratio, R, of PCDME to PAMPS results in four unique categories of hydrogels with different swelling ratios and Young's moduli. When R < 1, a negatively charged polyelectrolyte gel (PE) is formed; when 1 < R < 3, a tough and viscoelastic polyelectrolyte complex gel (PEC) is formed; when 3 < R < 6.5, a conventional, elastic interpenetrating network gel (IPN) is formed; and when R > 6.5, a tough and stiff double-network gel (DN) is formed. Both the PEC and DN gels exhibit high toughness and fracture stress, up to 1.8 and 1.5 MPa, respectively. Importantly, the PEC gels exhibit strong recovery properties along with high toughness, distinguishing them from DN gels. Without requiring a change in chemistry, we can tune the mechanical response of hydrogels over a wide spectrum, making this a useful system of soft and hydrated biomaterials.
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Affiliation(s)
- Haiyan Yin
- Graduate School of Life Science, Hokkaido University, Sapporo 001-0021, Japan
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Daniel R King
- Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo 001-0021, Japan
| | - Tao Lin Sun
- Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo 001-0021, Japan
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Yoshiyuki Saruwatari
- Osaka Organic Chemical Industry Ltd., 1-7-20 Azuchi-machi, Chuo-ku, Osaka 541-0052, Japan
| | - Tasuku Nakajima
- Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo 001-0021, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
| | - Takayuki Kurokawa
- Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo 001-0021, Japan
| | - Jian Ping Gong
- Faculty of Advanced Life Science, Hokkaido University, Sapporo 001-0021, Japan
- Global Station for Soft Matter, Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo 001-0021, Japan
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo 001-0021, Japan
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11
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Reduction of Physical Strength and Enhancement of Anti-Protein and Anti-Lipid Adsorption Abilities of Contact Lenses by Adding 2-Methacryloyloxyethyl Phosphorylcholine. Macromol Res 2020. [DOI: 10.1007/s13233-020-8149-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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12
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Poly(2-hydroxyethyl methacrylate)/β-cyclodextrin-hyaluronan contact lens with tear protein adsorption resistance and sustained drug delivery for ophthalmic diseases. Acta Biomater 2020; 110:105-118. [PMID: 32339710 DOI: 10.1016/j.actbio.2020.04.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/18/2020] [Accepted: 04/02/2020] [Indexed: 12/16/2022]
Abstract
A series of poly(2-hydroxyethyl methacrylate) (pHEMA) hydrogels containing cross-linked β-cyclodextrin-hyaluronan (β-CD-crHA), with tear protein adsorption resistance and sustained drug delivery, were developed as contact lens materials for eye diseases. β-CD-HA was synthesized from aminated β-CD and HA and then crosslinked within pHEMA hydrogel using polyethylenimine as a crosslinker. The synthesized β-CD-HA was characterized by 1H NMR analysis, and β-CD-crHA immobilized in pHEMA hydrogel was confirmed by FT-IR, SEM, and AFM analyses. The incorporation of β-CD-crHA significantly improved the surface hydrophilicity, water uptake ability, oxygen permeability, and flexibility of pHEMA hydrogel, but did not compromise light transmission. pHEMA/β-CD-crHA hydrogels not only decreased the tear protein adsorption because of the electrostatically mutual repulsion and the improved hydrophilicity, leading to the reduced adhesion of Staphylococcus aureus on the hydrogel surface, but also enhanced the encapsulation capacity and the sustainable delivery of diclofenac due to the formation of inclusion complexes between β-CD and drugs. All the hydrogels were nontoxic to 3T3 mouse fibroblasts by in vitro cell viability analysis. Among these hydrogels with different β-CD-crHA contents, pHEMA/β-CD-crHA10 hydrogel showed the lowest water contact angle of 52 °, the highest water content of 65%, the largest Dk value of 36.4 barrer, and the optimal modulus of 1.8 MPa, as well as a good light transmission of over 90%. The in vivo conjunctivitis treatment of rabbits for 72 h indicated that drug-loaded pHEMA/β-CD-crHA10 hydrogel presented a better therapeutic effect than both one dose administration of drug solution per day and drug-loaded pHEMA hydrogel. Thus, pHEMA/β-CD-crHA10 hydrogel is a promising contact lens material for ophthalmic diseases. STATEMENT OF SIGNIFICANCE: Topical eye drops are currently the most popular treatment for ophthalmic diseases, but frequent dosing is necessary to acquire the desirable clinical effect at the expense of systemic side-effects. Drug-loaded contact lenses, as an alternative of eye drops, possess many good performances and show potential applications. However, the sustained drug delivery and the tear protein adsorption resistance are still challenging for contact lenses. Hence, we developed a novel pHEMA/β-CD-crHA hydrogel by incorporating β-CD-crHA crosslinked network into pHEMA hydrogel. Besides the improvements in surface hydrophilicity, water uptake ability, oxygen permeability, and flexibility, pHEMA/β-CD-crHA hydrogel also reduced the adsorption of tear proteins and the adhesion of Staphylococcus aureus, enhanced the drug encapsulation, and prolonged the drug delivery, with better effect in the conjunctivitis treatment of rabbits. Thus, pHEMA/β-CD-crHA hydrogel is a potential contact lens material for treating ophthalmic diseases.
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13
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Vales TP, Jee JP, Lee WY, Cho S, Lee GM, Kim HJ, Kim JS. Development of Poly(2-Methacryloyloxyethyl Phosphorylcholine)-Functionalized Hydrogels for Reducing Protein and Bacterial Adsorption. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E943. [PMID: 32093241 PMCID: PMC7079665 DOI: 10.3390/ma13040943] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/13/2020] [Accepted: 02/19/2020] [Indexed: 01/25/2023]
Abstract
A series of hydrogels with intrinsic antifouling properties was prepared via surface-functionalization of poly(2-hydroxyethyl methacrylate) [p(HEMA)]-based hydrogels with the biomembrane-mimicking zwitterionic polymer, poly(2-methacryloyloxyethyl phosphorylcholine) [p(MPC)]. The p(MPC)-modified hydrogels have enhanced surface wettability, high water content retention (61.0%-68.3%), and good transmittance (>90%). Notably, the presence of zwitterionic MPC moieties at the hydrogel surfaces lowered the adsorption of proteins such as lysozyme and bovine serum albumin (BSA) by 73%-74% and 59%-66%, respectively, and reduced bacterial adsorption by approximately 10%-73% relative to the unmodified control. The anti-biofouling properties of the p(MPC)-functionalized hydrogels are largely attributed to the dense hydration layer formed at the hydrogel surfaces by the zwitterionic moieties. Overall, the results demonstrate that biocompatible and antifouling hydrogels based on p(HEMA)-p(MPC) structures have promising potential for application in biomedical materials.
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Affiliation(s)
- Temmy Pegarro Vales
- Department of Chemistry, Chosun University, Gwangju 501-759, Korea; (T.P.V.); (H.-J.K.)
- Department of Natural Sciences, Caraga State University, Butuan City 8600, Philippines
| | - Jun-Pil Jee
- College of Pharmacy, Chosun University, Gwangju 501-759, Korea; (J.-P.J.); (W.Y.L.)
| | - Won Young Lee
- College of Pharmacy, Chosun University, Gwangju 501-759, Korea; (J.-P.J.); (W.Y.L.)
| | - Sung Cho
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea;
| | - Gye Myung Lee
- Department of Carbon Materials, Chosun University, Gwangju 61452, Korea;
| | - Ho-Joong Kim
- Department of Chemistry, Chosun University, Gwangju 501-759, Korea; (T.P.V.); (H.-J.K.)
- Department of Carbon Materials, Chosun University, Gwangju 61452, Korea;
| | - Jung Suk Kim
- Department of Orthopaedic Surgery, Graduate School, College of Medicine, Kyung Hee University, Seoul 02447, Korea
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14
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Vales TP, Jee J, Lee WY, Min I, Cho S, Kim H. Protein Adsorption and Bacterial Adhesion Resistance of Cross‐linked Copolymer Hydrogels Based on Poly(2‐methacryloyloxyethyl phosphorylcholine) and Poly(2‐hydroxyethyl methacrylate). B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.11980] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Temmy Pegarro Vales
- Department of ChemistryChosun University Gwangju 501‐759 South Korea
- Department of Natural SciencesCaraga State University Butuan City 8600 Philippines
| | - Jun‐Pil Jee
- College of PharmacyChosun University Gwangju 501‐759 South Korea
| | - Won Young Lee
- College of PharmacyChosun University Gwangju 501‐759 South Korea
| | - Ilgi Min
- Department of Carbon MaterialsChosun University Gwangju 61452 South Korea
| | - Sung Cho
- Department of ChemistryChonnam National University Gwangju 61186 South Korea
| | - Ho‐Joong Kim
- Department of ChemistryChosun University Gwangju 501‐759 South Korea
- Department of Carbon MaterialsChosun University Gwangju 61452 South Korea
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15
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Wang Q, Chen S, Deng B, Wang Y, Dong D, Zhang N. Rare earth metal-mediated ring-opening polymerisation of cyclic phosphoesters. Polym Chem 2019. [DOI: 10.1039/c9py00025a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An efficient polymerisation of cyclic phosphoesters using a rare-earth metallocene as a catalyst is described, giving biodegradable polyphosphonates and polyphosphates.
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Affiliation(s)
- Qiliao Wang
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Shanshan Chen
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Bicheng Deng
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Ying Wang
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Dewen Dong
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
| | - Ning Zhang
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- China
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16
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Cooper BG, Catalina Bordeianu, Nazarian A, Snyder BD, Grinstaff MW. Active agents, biomaterials, and technologies to improve biolubrication and strengthen soft tissues. Biomaterials 2018; 181:210-226. [PMID: 30092370 PMCID: PMC6766080 DOI: 10.1016/j.biomaterials.2018.07.040] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 07/22/2018] [Accepted: 07/25/2018] [Indexed: 12/27/2022]
Abstract
Normal functioning of articulating tissues is required for many physiological processes occurring across length scales from the molecular to whole organism. Lubricating biopolymers are present natively on tissue surfaces at various sites of biological articulation, including eyelid, mouth, and synovial joints. The range of operating conditions at these disparate interfaces yields a variety of tribological mechanisms through which compressive and shear forces are dissipated to protect tissues from material wear and fatigue. This review focuses on recent advances in active agents and biomaterials for therapeutic augmentation of friction, lubrication, and wear in disease and injured states. Various small-molecule, biological, and gene delivery therapies are described, as are tribosupplementation with naturally-occurring and synthetic biolubricants and polymer reinforcements. While reintroduction of a diseased tissue's native lubricant received significant attention in the past, recent discoveries and pre-clinical research are capitalizing on concurrent advances in the molecular sciences and bioengineering fields, with an understanding of the underlying tissue structure and physiology, to afford a desired, and potentially patient-specific, tissue mechanical response for restoration of normal function. Small and large molecule drugs targeting recently elucidated pathways as well as synthetic and hybrid natural/synthetic biomaterials for restoring a desired tissue mechanical response are being investigated for treatment of, for example, keratoconjunctivitis sicca, xeroderma, and osteoarthritis.
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Affiliation(s)
- Benjamin G Cooper
- Department of Chemistry, Boston University, Boston, MA, United States; Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States.
| | - Catalina Bordeianu
- Department of Chemistry, Boston University, Boston, MA, United States; Department of Biomedical Engineering, Boston University, Boston, MA, United States.
| | - Ara Nazarian
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States.
| | - Brian D Snyder
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States; Department of Biomedical Engineering, Boston University, Boston, MA, United States; Department of Orthopaedic Surgery, Boston Children's Hospital, Boston, MA, United States.
| | - Mark W Grinstaff
- Department of Chemistry, Boston University, Boston, MA, United States; Department of Biomedical Engineering, Boston University, Boston, MA, United States; Department of Medicine, Boston University, Boston, MA, United States.
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17
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Johnson A, Madsen J, Chapman P, Alswieleh A, Al-Jaf O, Bao P, Hurley CR, Cartron ML, Evans SD, Hobbs JK, Hunter CN, Armes SP, Leggett GJ. Micrometre and nanometre scale patterning of binary polymer brushes, supported lipid bilayers and proteins. Chem Sci 2017; 8:4517-4526. [PMID: 28660065 PMCID: PMC5472033 DOI: 10.1039/c7sc00289k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 04/10/2017] [Indexed: 01/03/2023] Open
Abstract
Binary polymer brush patterns were fabricated via photodeprotection of an aminosilane with a photo-cleavable nitrophenyl protecting group. UV exposure of the silane film through a mask yields micrometre-scale amine-terminated regions that can be derivatised to incorporate a bromine initiator to facilitate polymer brush growth via atom transfer radical polymerisation (ATRP). Atomic force microscopy (AFM) and imaging secondary ion mass spectrometry (SIMS) confirm that relatively thick brushes can be grown with high spatial confinement. Nanometre-scale patterns were formed by using a Lloyd's mirror interferometer to expose the nitrophenyl-protected aminosilane film. In exposed regions, protein-resistant poly(oligo(ethylene glycol)methyl ether methacrylate) (POEGMEMA) brushes were grown by ATRP and used to define channels as narrow as 141 nm into which proteins could be adsorbed. The contrast in the pattern can be inverted by (i) a simple blocking reaction after UV exposure, (ii) a second deprotection step to expose previously intact protecting groups, and (iii) subsequent brush growth via surface ATRP. Alternatively, two-component brush patterns can be formed. Exposure of a nitrophenyl-protected aminosilane layer either through a mask or to an interferogram, enables growth of an initial POEGMEMA brush. Subsequent UV exposure of the previously intact regions allows attachment of ATRP initiator sites and growth of a second poly(cysteine methacrylate) (PCysMA) brush within photolithographically-defined micrometre or nanometre scale regions. POEGMEMA brushes resist deposition of liposomes, but fluorescence recovery after photobleaching (FRAP) studies confirm that liposomes readily rupture on PCysMA "corrals" defined within POEGMEMA "walls". This leads to the formation of highly mobile supported lipid bilayers that exhibit similar diffusion coefficients to lipid bilayers formed on surfaces such as glass.
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Affiliation(s)
- Alexander Johnson
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK .
| | - Jeppe Madsen
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK .
| | - Paul Chapman
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK .
- Department of Physics and Astronomy , University of Sheffield , Sheffield S3 7RH , UK
| | - Abdullah Alswieleh
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK .
| | - Omed Al-Jaf
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK .
| | - Peng Bao
- Molecular and Nanoscale Physics Group , School of Physics and Astronomy , University of Leeds , Leeds LS2 9JT , UK
| | - Claire R Hurley
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK .
| | - Michaël L Cartron
- Department of Molecular Biology and Biotechnology , University of Sheffield , Western Bank , Sheffield S10 2TN , UK
| | - Stephen D Evans
- Molecular and Nanoscale Physics Group , School of Physics and Astronomy , University of Leeds , Leeds LS2 9JT , UK
| | - Jamie K Hobbs
- Department of Physics and Astronomy , University of Sheffield , Sheffield S3 7RH , UK
- Krebs Institute , University of Sheffield , Sheffield , South Yorkshire S10 2TN , UK
| | - C Neil Hunter
- Department of Molecular Biology and Biotechnology , University of Sheffield , Western Bank , Sheffield S10 2TN , UK
| | - Steven P Armes
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK .
| | - Graham J Leggett
- Department of Chemistry , University of Sheffield , Brook Hill , Sheffield S3 7HF , UK .
- Krebs Institute , University of Sheffield , Sheffield , South Yorkshire S10 2TN , UK
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18
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Macková H, Plichta Z, Hlídková H, Sedláček O, Konefal R, Sadakbayeva Z, Dušková-Smrčková M, Horák D, Kubinová Š. Reductively Degradable Poly(2-hydroxyethyl methacrylate) Hydrogels with Oriented Porosity for Tissue Engineering Applications. ACS APPLIED MATERIALS & INTERFACES 2017; 9:10544-10553. [PMID: 28287694 DOI: 10.1021/acsami.7b01513] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Degradable poly(2-hydroxyethyl methacrylate) hydrogels were prepared from a linear copolymer (Mw = 49 kDa) of 2-hydroxyethyl methacrylate (HEMA), 2-(acethylthio)ethyl methacrylate (ATEMA), and zwitterionic 2-methacryloyloxyethyl phosphorylcholine (MPC). The deprotection of ATEMA thiol groups by triethylamine followed by their gentle oxidation with 2,2'-dithiodipyridine resulted in the formation of reductively degradable polymers with disulfide bridges. Finally, a hydrogel 3D structure with an oriented porosity was obtained by gelation of the polymer in the presence of needle-like sodium acetate crystals. The pore diameter and porosity of resulting poly(2-hydroxyethyl methacrylate-co-2-(acethylthio)ethyl methacrylate-co-2-methacryloyloxyethyl phosphorylcholine) [P(HEMA-ATEMA-MPC)] hydrogels varied between 59 and 65 μm and between 70 and 79.6 vol % according to Hg porosimetry, and complete degradation of these materials was reached in 86 days in 0.33 mmol solution of l-cysteine/L in phosphate buffer. The cross-linked P(HEMA-ATEMA-MPC) hydrogels were evaluated as a possible support for human mesenchymal stem cells (MSCs). No cytotoxicity was found for the un-cross-linked thiol-containing and protected P(HEMA-ATEMA-MPC) chains up to a concentration of 5 and 1 wt % in α-minimum essential medium, respectively.
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Affiliation(s)
- Hana Macková
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Zdeněk Plichta
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Helena Hlídková
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Ondřej Sedláček
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Rafal Konefal
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Zhansaya Sadakbayeva
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Miroslava Dušková-Smrčková
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Daniel Horák
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic , Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Šárka Kubinová
- Institute of Experimental Medicine, Academy of Sciences of the Czech Republic , Vídeňská 1083, 142 20 Prague 4, Czech Republic
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19
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Deng X, Korogiannaki M, Rastegari B, Zhang J, Chen M, Fu Q, Sheardown H, Filipe CDM, Hoare T. "Click" Chemistry-Tethered Hyaluronic Acid-Based Contact Lens Coatings Improve Lens Wettability and Lower Protein Adsorption. ACS APPLIED MATERIALS & INTERFACES 2016; 8:22064-22073. [PMID: 27509015 DOI: 10.1021/acsami.6b07433] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Improving the wettability of and reducing the protein adsorption to contact lenses may be beneficial for improving wearer comfort. Herein, we describe a simple "click" chemistry approach to surface functionalize poly(2-hydroxyethyl methacrylate) (pHEMA)-based contact lenses with hyaluronic acid (HA), a carbohydrate naturally contributing to the wettability of the native tear film. A two-step preparation technique consisting of laccase/TEMPO-mediated oxidation followed by covalent grafting of hydrazide-functionalized HA via simple immersion resulted in a model lens surface that is significantly more wettable, more water retentive, and less protein binding than unmodified pHEMA while maintaining the favorable transparency, refractive, and mechanical properties of a native lens. The dipping/coating method we developed to covalently tether the HA wetting agent is simple, readily scalable, and a highly efficient route for contact lens modification.
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Affiliation(s)
- Xudong Deng
- Department of Chemical Engineering, McMaster University , Hamilton, Ontario L8S 4L7, Canada
| | - Myrto Korogiannaki
- Department of Chemical Engineering, McMaster University , Hamilton, Ontario L8S 4L7, Canada
| | - Banafsheh Rastegari
- Department of Chemical Engineering, McMaster University , Hamilton, Ontario L8S 4L7, Canada
- Department of Biology, Faculty of Sciences, Shiraz University , Shiraz, Fars 71946-84636, Iran
| | - Jianfeng Zhang
- Department of Chemical Engineering, McMaster University , Hamilton, Ontario L8S 4L7, Canada
| | - Mengsu Chen
- School of Nursing, McMaster University , Hamilton, Ontario L8S 4L8, Canada
| | - Qiang Fu
- Department of Chemical Engineering, McMaster University , Hamilton, Ontario L8S 4L7, Canada
| | - Heather Sheardown
- Department of Chemical Engineering, McMaster University , Hamilton, Ontario L8S 4L7, Canada
| | - Carlos D M Filipe
- Department of Chemical Engineering, McMaster University , Hamilton, Ontario L8S 4L7, Canada
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University , Hamilton, Ontario L8S 4L7, Canada
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20
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Cho J, Miyake Y, Honda A, Kushiro K, Takai M. Analysis of the Changes in Expression Levels of Sialic Acid on Influenza-Virus-Infected Cells Using Lectin-Tagged Polymeric Nanoparticles. Front Microbiol 2016; 7:1147. [PMID: 27493646 PMCID: PMC4954814 DOI: 10.3389/fmicb.2016.01147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 07/08/2016] [Indexed: 12/17/2022] Open
Abstract
Viral infections affect millions around the world, sometimes leading to severe consequences or even epidemics. Understanding the molecular dynamics during viral infections would provide crucial information for preventing or stopping the progress of infections. However, the current methods often involve the disruption of the infected cells or expensive and time-consuming procedures. In this study, fluorescent polymeric nanoparticles were fabricated and used as bioimaging nanoprobes that can monitor the progression of influenza viral infection through the changes in the expression levels of sialic acids expressed on the cell membrane. The nanoparticles were composed of a biocompatible monomer to prevent non-specific interactions, a hydrophobic monomer to form the core, a fluorescent monomer, and a protein-binding monomer to conjugate lectin, which binds sialic acids. It was shown that these lectin-tagged nanoparticles that specifically target sialic acids could track the changes in the expression levels of sialic acids caused by influenza viral infections in human lung epithelial cells. There was a sudden drop in the levels of sialic acid at the initial onset of virus infection (t = 0~1 h) and at approximately 4~5 h post-infection. The latter drop correlated with the production of viral proteins that was confirmed using traditional techniques. Thus, the accuracy, the rapidity and the efficacy of the nanoprobes were demonstrated. Such molecular bioimaging tools, which allow easy-handling and in situ monitoring, would be useful to directly observe and decipher the viral infection mechanisms.
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Affiliation(s)
- Jaebum Cho
- Department of Bioengineering, The University of Tokyo Tokyo, Japan
| | - Yukari Miyake
- Department of Frontier Bioscience, Hosei University Tokyo, Japan
| | - Ayae Honda
- Department of Frontier Bioscience, Hosei University Tokyo, Japan
| | | | - Madoka Takai
- Department of Bioengineering, The University of Tokyo Tokyo, Japan
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21
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Zhang Z, Moxey M, Alswieleh A, Morse AJ, Lewis AL, Geoghegan M, Leggett GJ. Effect of Salt on Phosphorylcholine-based Zwitterionic Polymer Brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5048-5057. [PMID: 27133955 DOI: 10.1021/acs.langmuir.6b00763] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A quantitative investigation of the responses of surface-grown biocompatible brushes of poly(2-(methacryloyloxy)ethyl phosphorylcholine) (PMPC) to different types of salt has been carried out using ellipsometry, quartz crystal microbalance (QCM) measurements, and friction force microscopy. Both cations and anions of varying valency over a wide range of concentrations were examined. Ellipsometry shows that the height of the brushes is largely independent of the ionic strength, confirming that the degree of swelling of the polymer is independent of the ionic character of the medium. In contrast, QCM measurements reveal significant changes in mass and dissipation to the PMPC brush layer, suggesting that ions bind to phosphorylcholine (PC) groups in PMPC molecules, which results in changes in the stiffness of the brush layer, and the binding affinity varies with salt type. Nanotribological measurements made using friction force microscopy show that the coefficient of friction decreases with increasing ionic strength for a variety of salts, supporting the conclusion drawn from QCM measurements. It is proposed that the binding of ions to the PMPC molecules does not change their hydration state, and hence the height of the surface-grown polymeric brushes. However, the balance of the intra- and intermolecular interactions is strongly dependent upon the ionic character of the medium between the hydrated chains, modulating the interactions between the zwitterionic PC pendant groups and, consequently, the stiffness of the PMPC molecules in the brush layer.
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Affiliation(s)
- Zhenyu Zhang
- Department of Chemistry, University of Sheffield , Brook Hill, Sheffield S3 7HF, United Kingdom
| | - Mark Moxey
- Department of Chemistry, University of Sheffield , Brook Hill, Sheffield S3 7HF, United Kingdom
| | - Abdullah Alswieleh
- Department of Chemistry, University of Sheffield , Brook Hill, Sheffield S3 7HF, United Kingdom
| | - Andrew J Morse
- Department of Chemistry, University of Sheffield , Brook Hill, Sheffield S3 7HF, United Kingdom
| | - Andrew L Lewis
- Biocompatibles UK Ltd. , Chapman House, Farnham Business Park, Weydon Lane, Farnham, Surrey GU9 8QL, United Kingdom
| | - Mark Geoghegan
- Department of Physics and Astronomy, University of Sheffield , Sheffield S3 7RH, United Kingdom
| | - Graham J Leggett
- Department of Chemistry, University of Sheffield , Brook Hill, Sheffield S3 7HF, United Kingdom
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22
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Jiang D, Liu Z, He X, Han J, Wu X. Polyacrylamide strengthened mixed-charge hydrogels and their applications in resistance to protein adsorption and algae attachment. RSC Adv 2016. [DOI: 10.1039/c6ra05312b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mixed-charge polymer hydrogels were successfully prepared by copolymerization of different ratios of [2-(meth-acryloyloxy)ethyl]trimethylammonium (TMA) and 3-sulfopropyl methacrylate (SA).
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Affiliation(s)
- Daoyi Jiang
- Key Laboratory of Marine Materials and Related Technologies
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Zhixiong Liu
- Key Laboratory of Marine Materials and Related Technologies
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Xiaoyan He
- Key Laboratory of Marine Materials and Related Technologies
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Jin Han
- Key Laboratory of Marine Materials and Related Technologies
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
| | - Xuedong Wu
- Key Laboratory of Marine Materials and Related Technologies
- Zhejiang Key Laboratory of Marine Materials and Protective Technologies
- Ningbo Institute of Materials Technology and Engineering
- Chinese Academy of Sciences
- Ningbo
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23
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Haraguchi K, Ning J, Li G. Changes in the Properties and Self-Healing Behaviors of Zwitterionic Nanocomposite Gels Across Their UCST Transition. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/masy.201500041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Kazutoshi Haraguchi
- Applied Molecular Chemistry, College of Industrial Chemistry; Nihon University; Narashino Chiba 275-8575 Japan
| | - Jinyan Ning
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science Engineering; Donghua University; Shanghai 201620 China
- School of Materials Science and Engineering; Shanghai University; Shanghai 200444 China
| | - Guang Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science Engineering; Donghua University; Shanghai 201620 China
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24
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Oda H, Konno T, Ishihara K. Efficient differentiation of stem cells encapsulated in a cytocompatible phospholipid polymer hydrogel with tunable physical properties. Biomaterials 2015; 56:86-91. [DOI: 10.1016/j.biomaterials.2015.03.051] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 03/23/2015] [Accepted: 03/27/2015] [Indexed: 12/01/2022]
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25
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Jeong KS, Kim HJ, Lim HL, Ryu GC, Seo ES, You NH, Jun J. Synthesis and Biocompatibility of Silicone Hydrogel Functionalized with Polysaccharide. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10315] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Keun-Seung Jeong
- Department of Optometry and Optic Science; Dongshin University; Naju 520-714 Korea
| | - Ho-Joong Kim
- Department of Chemistry; Chosun University; Gwangju 501-759 Korea
| | - Hwa-Lim Lim
- Department of Optometry and Optic Science; Dongshin University; Naju 520-714 Korea
| | - Geun-Chang Ryu
- Department of Optometry and Optic Science; Dongshin University; Naju 520-714 Korea
| | - Eun-Sun Seo
- Department of Optometry and Optic Science; Dongshin University; Naju 520-714 Korea
| | - Nam-Ho You
- Carbon Convergence Materials Research Center; Institute of Advanced Composites Materials, Korea Institute of Science and Technology; Wanju-gun 565-905 Korea
| | - Jin Jun
- Department of Optometry and Optic Science; Dongshin University; Naju 520-714 Korea
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26
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Xiang J, Sun J, Hong J, Wang W, Wei A, Le Q, Xu J. T-style keratoprosthesis based on surface-modified poly (2-hydroxyethyl methacrylate) hydrogel for cornea repairs. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 50:274-85. [DOI: 10.1016/j.msec.2015.01.089] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Revised: 12/11/2014] [Accepted: 01/30/2015] [Indexed: 10/24/2022]
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27
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Effects of specific anions on the relationship between the ion-adsorption properties of sulfobetaine gel and its swelling behavior. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.01.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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28
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Wu HX, Tan L, Yang MY, Liu CJ, Zhuo RX. Protein-resistance performance of amphiphilic copolymer brushes consisting of fluorinated polymers and polyacrylamide grafted from silicon surfaces. RSC Adv 2015. [DOI: 10.1039/c4ra16036c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
A series of random copolymer brushes of acrylamide (AM) and 2-(perfluorinated hexyl)ethyl methacrylate (FMA) were grafted from initiator-functionalized silicon wafers by surface-initiated atom transfer radical polymerization.
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Affiliation(s)
- Hai-Xia Wu
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Lei Tan
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Mei-Yan Yang
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Chuan-Jun Liu
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
| | - Ren-Xi Zhuo
- Key Laboratory of Biomedical Polymers of Ministry of Education
- College of Chemistry and Molecular Science
- Wuhan University
- Wuhan
- P. R. China
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29
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Kim HJ, Ryu GC, Jeong KS, Jun J. Hydrogel lenses functionalized with polysaccharide for reduction of protein adsorption. Macromol Res 2014. [DOI: 10.1007/s13233-015-3009-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Cho J, Kushiro K, Teramura Y, Takai M. Lectin-Tagged Fluorescent Polymeric Nanoparticles for Targeting of Sialic Acid on Living Cells. Biomacromolecules 2014; 15:2012-8. [DOI: 10.1021/bm500159r] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jaebum Cho
- Department
of Bioengineering,
Grad10-ate School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Keiichiro Kushiro
- Department
of Bioengineering,
Grad10-ate School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuji Teramura
- Department
of Bioengineering,
Grad10-ate School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Madoka Takai
- Department
of Bioengineering,
Grad10-ate School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
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31
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32
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Ning J, Li G, Haraguchi K. Effects of Polymer Concentration on Structure and Properties of Zwitterionic Nanocomposite Gels. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300637] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jinyan Ning
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; Shanghai 201620 China
- Material Chemistry Laboratory; Kawamura Institute of Chemical Research; 631 Sakado Sakura Chiba 285-0078 Japan
| | - Guang Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Materials Science and Engineering, Donghua University; Shanghai 201620 China
| | - Kazutoshi Haraguchi
- Material Chemistry Laboratory; Kawamura Institute of Chemical Research; 631 Sakado Sakura Chiba 285-0078 Japan
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33
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Wang N, Trunfio-Sfarghiu AM, Portinha D, Descartes S, Fleury E, Berthier Y, Rieu JP. Nanomechanical and tribological characterization of the MPC phospholipid polymer photografted onto rough polyethylene implants. Colloids Surf B Biointerfaces 2013; 108:285-94. [DOI: 10.1016/j.colsurfb.2013.02.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 02/09/2013] [Accepted: 02/13/2013] [Indexed: 10/27/2022]
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34
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Oda H, Konno T, Ishihara K. The use of the mechanical microenvironment of phospholipid polymer hydrogels to control cell behavior. Biomaterials 2013; 34:5891-6. [DOI: 10.1016/j.biomaterials.2013.04.015] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Accepted: 04/06/2013] [Indexed: 11/15/2022]
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35
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Ning J, Li G, Haraguchi K. Synthesis of Highly Stretchable, Mechanically Tough, Zwitterionic Sulfobetaine Nanocomposite Gels with Controlled Thermosensitivities. Macromolecules 2013. [DOI: 10.1021/ma4009059] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinyan Ning
- State Key Laboratory for Modification
of Chemical Fibers and Polymer Materials, College of Materials Science
and Engineering, Donghua University, Shanghai,
201620, China
- Material
Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado,
Sakura, Chiba, 285-0078, Japan
| | - Guang Li
- State Key Laboratory for Modification
of Chemical Fibers and Polymer Materials, College of Materials Science
and Engineering, Donghua University, Shanghai,
201620, China
| | - Kazutoshi Haraguchi
- Material
Chemistry Laboratory, Kawamura Institute of Chemical Research, 631 Sakado,
Sakura, Chiba, 285-0078, Japan
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36
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Yin H, Akasaki T, Lin Sun T, Nakajima T, Kurokawa T, Nonoyama T, Taira T, Saruwatari Y, Ping Gong J. Double network hydrogels from polyzwitterions: high mechanical strength and excellent anti-biofouling properties. J Mater Chem B 2013; 1:3685-3693. [PMID: 32261266 DOI: 10.1039/c3tb20324g] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polyzwitterionic materials, which have both cationic and anionic groups in the polymeric repeat unit, show excellent anti-biofouling properties and are drawing more attention in the biomedical field. In this study, we have successfully synthesized novel single network hydrogels and double network (DN) hydrogels from the zwitterionic monomer, N-(carboxymethyl)-N,N-dimethyl-2-(methacryloyloxy) ethanaminium, inner salt (CDME). The polyCDME (PCDME) single network hydrogel behaves like a hydrophilic neutral hydrogel and its properties are not sensitive to temperature, pH, or ionic strength over a wide range. DN hydrogels using the poly(2-acrylamido-2-methylpropanesulfonic) (PAMPS) as the first network and PCDME as the second network, having a Young's modulus of 0.2-0.9 MPa, possess excellent mechanical strength (fracture stress: 1.2-1.4 MPa, fracture strain: 2.2-6.0 mm/mm) and toughness (work of extension at fracture: 0.9-2.4 MJ m-3) depending on the composition ratio of PCDME to PAMPS. The strength and toughness of the optimized PAMPS/PCDME DN is comparable to the normal PAMPS/PAAm DN hydrogels that use poly(acrylamide) (PAAm) as the second network. By macrophage adhesion test, both the PCDME hydrogels and the PAMPS/PCDME DN hydrogels have shown excellent anti-biofouling properties. These results demonstrate that the PCDME-based DN hydrogels have high potential as a novel soft and wet biomaterial.
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Affiliation(s)
- Haiyan Yin
- Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan
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37
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Gonzalez JS, Nicolás P, Ferreira ML, Avena M, Lassalle VL, Alvarez VA. Fabrication of ferrogels using different magnetic nanoparticles and their performance on protein adsorption. POLYM INT 2013. [DOI: 10.1002/pi.4498] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jimena S. Gonzalez
- Composite Materials Group (CoMP), Institute of Materials Science and Technology (INTEMA); University of Mar del Plata and National Research Council (CONICET); Solís 7575, B7608FLC Mar del Plata Argentina
| | - Paula Nicolás
- Institute of Chemistry of the South (Inquisur; Universidad Nacional del Sur − CONICET); Avda Alem 1253 Bahía Blanca Argentina
| | - María Luján Ferreira
- Pilot Plant of Chemical Engineering (PLAPIQUI); Universidad Nacional del Sur − CONICET); Camino La Carrindanga km 7 Bahía Blanca Argentina
| | - Marcelo Avena
- Institute of Chemistry of the South (Inquisur; Universidad Nacional del Sur − CONICET); Avda Alem 1253 Bahía Blanca Argentina
| | - Verónica L. Lassalle
- Institute of Chemistry of the South (Inquisur; Universidad Nacional del Sur − CONICET); Avda Alem 1253 Bahía Blanca Argentina
| | - Vera A. Alvarez
- Composite Materials Group (CoMP), Institute of Materials Science and Technology (INTEMA); University of Mar del Plata and National Research Council (CONICET); Solís 7575, B7608FLC Mar del Plata Argentina
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38
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Sun D, Zhou J. Effect of water content on microstructures and oxygen permeation in PSiMA–IPN–PMPC hydrogel: a molecular simulation study. Chem Eng Sci 2012. [DOI: 10.1016/j.ces.2011.11.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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39
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Salzinger S, Rieger B. Rare Earth Metal-Mediated Group Transfer Polymerization of Vinylphosphonates. Macromol Rapid Commun 2012; 33:1327-45. [DOI: 10.1002/marc.201200278] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Indexed: 11/09/2022]
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40
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Zhang N, Salzinger S, Deubel F, Jordan R, Rieger B. Surface-Initiated Group Transfer Polymerization Mediated by Rare Earth Metal Catalysts. J Am Chem Soc 2012; 134:7333-6. [DOI: 10.1021/ja3027423] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ning Zhang
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching
bei München, Germany
| | - Stephan Salzinger
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching
bei München, Germany
| | - Frank Deubel
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching
bei München, Germany
| | - Rainer Jordan
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching
bei München, Germany
- Professur für Makromolekulare
Chemie, Department Chemie, Technische Universität Dresden, Zellescher Weg 19, 01069 Dresden, Germany
| | - Bernhard Rieger
- WACKER-Lehrstuhl für
Makromolekulare Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching
bei München, Germany
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41
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Protein deposition on contact lenses: The past, the present, and the future. Cont Lens Anterior Eye 2012; 35:53-64. [DOI: 10.1016/j.clae.2011.12.005] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2010] [Revised: 12/18/2011] [Accepted: 12/24/2011] [Indexed: 11/19/2022]
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42
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Feng Y, Yang D, Behl M, Lendlein A, Zhao H, Guo J. The Influence of Zwitterionic Phospholipid Brushes Grafted via UV-Initiated or SI-ATR Polymerization on the Hemocompatibility of Polycarbonateurethane. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.201100034] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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43
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Cytotoxicity assays of new artificial tears containing 2-methacryloyloxyethyl phosphorylcholine polymer for ocular surface cells. Jpn J Ophthalmol 2011; 55:541-546. [PMID: 21830058 DOI: 10.1007/s10384-011-0073-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 05/23/2011] [Indexed: 12/18/2022]
Abstract
PURPOSE 2-Methacryloyloxyethyl phosphorylcholine (MPC) polymer is a multifunctional agent with antiadhesive, antithrombogenetic, and strong hydrating properties. MPC polymer-containing eye drops are the first such ophthalmic product to be commercially available; they contain approximately 0.1% Lipidure-PMB (copolymer of MPC and butyl methacrylate; NOF Corporation, Tokyo, Japan). This study evaluated the cytotoxicity of this new product toward ocular surface cells. METHODS SIRC (rabbit cornea), BCE C/D-1b (bovine cornea), RC-1 (rabbit cornea), and Chang (human conjunctiva) cell lines were tested in this study. Cell viability was measured using both the MTT assay and the neutral red test in cells treated for 10, 30, or 60 min with MPC-containing eye drops and 4 commercial ophthalmic solutions containing sodium hyaluronate (SH) at various doses (undiluted, twofold diluted, and tenfold diluted). Cell viability scores were calculated. Cell viability was analyzed using ANOVA and the Dunnett test. RESULTS After treatment with the MPC eye drops, cell viability rates were maintained at over 80% irrespective of the cell lines, dilution rates, exposure times, and assays, and were similar to those of the clinically approved artificial tear products other than Hyalein 0.1%, although some significant differences were found. CONCLUSIONS The MPC eye drops were tolerable to ocular surface cells, and comparable to single doses of clinically approved drugs containing sodium hyaluronate.
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Monge S, Canniccioni B, Graillot A, Robin JJ. Phosphorus-Containing Polymers: A Great Opportunity for the Biomedical Field. Biomacromolecules 2011; 12:1973-82. [DOI: 10.1021/bm2004803] [Citation(s) in RCA: 243] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sophie Monge
- Institut Charles Gerhardt Montpellier UMR5253 CNRS-UM2-ENSCM-UM1 - Equipe Ingénierie et Architectures Macromoléculaires, Université Montpellier II cc1702, Place Eugène Bataillon 34095 Montpellier Cedex 5
| | - Benjamin Canniccioni
- Institut Charles Gerhardt Montpellier UMR5253 CNRS-UM2-ENSCM-UM1 - Equipe Ingénierie et Architectures Macromoléculaires, Université Montpellier II cc1702, Place Eugène Bataillon 34095 Montpellier Cedex 5
| | - Alain Graillot
- Institut Charles Gerhardt Montpellier UMR5253 CNRS-UM2-ENSCM-UM1 - Equipe Ingénierie et Architectures Macromoléculaires, Université Montpellier II cc1702, Place Eugène Bataillon 34095 Montpellier Cedex 5
| | - Jean-Jacques Robin
- Institut Charles Gerhardt Montpellier UMR5253 CNRS-UM2-ENSCM-UM1 - Equipe Ingénierie et Architectures Macromoléculaires, Université Montpellier II cc1702, Place Eugène Bataillon 34095 Montpellier Cedex 5
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45
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Mori T, Kubo T, Konno TJ, Hosoya K. Polymers of 2-methacryloyloxyethyl phosphorylcholine truly work as cell membrane mimic? Colloids Surf B Biointerfaces 2011; 84:181-6. [DOI: 10.1016/j.colsurfb.2010.12.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Revised: 12/26/2010] [Accepted: 12/28/2010] [Indexed: 10/18/2022]
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46
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Functionalizable and nonfouling zwitterionic carboxybetaine hydrogels with a carboxybetaine dimethacrylate crosslinker. Biomaterials 2011; 32:961-8. [DOI: 10.1016/j.biomaterials.2010.09.067] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Accepted: 09/30/2010] [Indexed: 02/02/2023]
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47
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Liu YL, Chang Y, Chang YH, Shih YJ. Preparation of amphiphilic polymer-functionalized carbon nanotubes for low-protein-adsorption surfaces and protein-resistant membranes. ACS APPLIED MATERIALS & INTERFACES 2010; 2:3642-3647. [PMID: 21090586 DOI: 10.1021/am100811q] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Multiwalled carbon nanotubes functionalized with poly(sulfone) (PSF) and poly(sulfobetaine methacrylate) (PSBMA) (MWNT-PSF/PSBMA) have been prepared through sequential atom transfer radical polymerization. The structure of MWNT-PSF/PSBMA hybrid has been characterized with FTIR, Raman spectroscopy, and high-resolution transmission electron microscopy. Incorporation of PSBMA chains to MWNTs introduces amphiphilic and protein-resistant properties to MWNT-PSF/PSBMA. Addition of 1 wt % MWNT-PSF/PSBMA to PSF films significantly improves their protein-resistant characteristic, as the composite films show a 4.4% of protein adsorption compared to poly(styrene) Petri dishes. The PSF/MWNT-PSF/PSBMA composite has been applied to prepare antifouling ultrafiltration membranes for protein separation. This work demonstrates an effective and convenient approach to prepare low-protein-adsorption surfaces and antifouling membranes.
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Affiliation(s)
- Ying-Ling Liu
- Department of Chemical Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan 32023, Taiwan
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48
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Wang C, Javadi A, Ghaffari M, Gong S. A pH-sensitive molecularly imprinted nanospheres/hydrogel composite as a coating for implantable biosensors. Biomaterials 2010; 31:4944-51. [DOI: 10.1016/j.biomaterials.2010.02.073] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Accepted: 02/28/2010] [Indexed: 12/24/2022]
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