1
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Wu LC, Tada S, Isoshima T, Serizawa T, Ito Y. Photo-reactive polymers for the immobilisation of epidermal growth factors. J Mater Chem B 2023. [PMID: 36655770 DOI: 10.1039/d2tb02040h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Photo-reactive polymers are important for biomaterials, including devices with a 3D-structure. Here, different types of photo-reactive polymers were prepared and utilised for immobilisation of growth factors. They were synthesised by conjugation of gelatin with the azidophenyl group or by copolymerisation of the azidophenyl group-coupled methacrylate with poly(ethylene glycol) methacrylate. The azidophenyl content and the zeta potential of the prepared polymers were measured. After spin coating of polymers, the thickness and the water contact angle of coated layers were measured. The amount of the immobilised epidermal growth factor (EGF) was determined using fluorescence labelling. Cell adhesion responded to the nature of photo-reactive polymers but did not depend on the immobilised EGF. However, cell growth was dependent on the amount of immobilised EGF and was significantly affected by the nature of photo-reactive polymers. The study shows that the properties of the photo-immobilisation matrix significantly influence the biological activity.
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Affiliation(s)
- Liang-Chun Wu
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. .,Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Seiichi Tada
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Takashi Isoshima
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
| | - Takeshi Serizawa
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. .,Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. .,Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan.,Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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2
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Othman MH, Ito Y, Akimoto J. Synthesis and Characterization of Polyethylene Glycol-Grafted Photoreactive Polyethylene Glycols for Antibiofouling Applications. Polymers (Basel) 2022; 15:polym15010184. [PMID: 36616534 PMCID: PMC9824761 DOI: 10.3390/polym15010184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/26/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022] Open
Abstract
Notably, antibiofouling is an important and predominant technique adopted to improve the surfaces of biomaterials. In this study, polyethylene glycol-grafted polyethylene glycols bearing azidophenyl groups were synthesized and immobilized on polystyrene surfaces via photoirradiation. The prepared polymers were found to be highly soluble in water, and photoimmobilization with fluorescent proteins was confirmed based on micropatterning using a photomask. These polymers suppressed nonspecific interactions between proteins and cells on the substrate. Considering that photoimmobilization can be adopted for the covalent bond modification of various surfaces, the developed water-soluble and highly antibiofouling polymers appear to be useful in biomaterial preparation.
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Affiliation(s)
- Mahmoud H. Othman
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan
- Department of Biological Sciences, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji 192-0397, Tokyo, Japan
| | - Yoshihiro Ito
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan
- Department of Biological Sciences, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji 192-0397, Tokyo, Japan
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan
- Correspondence: (Y.I.); (J.A.)
| | - Jun Akimoto
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako 351-0198, Saitama, Japan
- Correspondence: (Y.I.); (J.A.)
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3
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Semak V, Eichhorn T, Weiss R, Weber V. Polyzwitterionic Coating of Porous Adsorbents for Therapeutic Apheresis. J Funct Biomater 2022; 13:jfb13040216. [PMID: 36412857 PMCID: PMC9680258 DOI: 10.3390/jfb13040216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
Adsorbents for whole blood apheresis need to be highly blood compatible to minimize the activation of blood cells on the biomaterial surface. Here, we developed blood-compatible matrices by surface modification with polyzwitterionic polysulfobetainic and polycarboxybetainic coatings. Photoreactive zwitterionic terpolymers were synthesized by free-radical polymerization of zwitterionic, photoreactive, and fluorescent monomers. Upon UV irradiation, the terpolymers were photodeposited and mutually crosslinked on the surface of hydrophobic polystyrene-co-divinylbenzene and hydrophilic polyacrylamide-co-polyacrylate (DALI) beads. Fluorescent microscopy revealed coatings with an average thickness of 5 µm, which were limited to the bead surface. Blood compatibility was assessed based on polymer-induced hemolysis, coagulation parameters, and in vitro tests. The maintenance of the adsorption capacity after coating was studied in human whole blood with cytokines for polystyrene beads (remained capacity 25-67%) and with low-density lipoprotein (remained capacity 80%) for polyacrylate beads. Coating enhanced the blood compatibility of hydrophobic, but not of hydrophilic adsorbents. The most prominent effect was observed on coagulation parameters (e.g., PT, aPTT, TT, and protein C) and neutrophil count. Polycarboxybetaine with a charge spacer of five carbons was the most promising polyzwitterion for the coating of adsorbents for whole blood apheresis.
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4
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Akimoto J, Kashiwagi H, Morishima N, Obuse S, Isoshima T, Kageyama T, Nakajima H, Ito Y. Rapid and quantitative detection of multiple antibodies against SARS-CoV-2 mutant proteins by photo-immobilized microarray. ANAL SCI 2022; 38:1313-1321. [PMID: 35917106 PMCID: PMC9343572 DOI: 10.1007/s44211-022-00161-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 06/30/2022] [Indexed: 11/21/2022]
Abstract
A rapid automatic quantitative diagnostic system for multiple SARS-CoV-2 mutant protein-specific antibodies was developed using a microarray with photoreactive polymers. Two types of photoreactive polymers, phenylazide and polyoxyethylene, were prepared. The polymers were coated on a plastic plate. Aqueous solutions of mutant virus proteins were microspotted on the coated plate and immobilized by photoirradiation. Virus-specific IgG in the serum or blood was automatically assayed using an instrument that we developed for pipetting, reagent stirring, and washing. The results highly correlated with those of the conventional enzyme-linked immunoassay or immunochromatography. This system was successfully used to test the sera or blood from the patients recovered from the infection and the vaccinated individuals. The recovered individuals had antibodies against the nucleoprotein, in contrast to the vaccinated individuals. The amount of antibodies produced decreased with an increase in virus mutation. Blood collected from the fingertip (5 μL) and a test period of 8 min were sufficient conditions for conducting multiple antibody assays. We believe that our system would facilitate rapid and quantitative automatic assays and aid in the diagnosis of various viral infectious diseases and assessment of the immune status for clinical applications.
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Affiliation(s)
- Jun Akimoto
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.,R-NanoBio Co., Ltd., Wako-RIKEN Incubation Plaza, 3-13 Minami, Wako-shi, Saitama, 351-0104, Japan
| | - Hiroharu Kashiwagi
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
| | - Nobuhiro Morishima
- R-NanoBio Co., Ltd., Wako-RIKEN Incubation Plaza, 3-13 Minami, Wako-shi, Saitama, 351-0104, Japan.,Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
| | - Sei Obuse
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.,R-NanoBio Co., Ltd., Wako-RIKEN Incubation Plaza, 3-13 Minami, Wako-shi, Saitama, 351-0104, Japan
| | - Takashi Isoshima
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan
| | - Takahiro Kageyama
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chiba City, Chiba, 260-8670, Japan
| | - Hiroshi Nakajima
- Department of Allergy and Clinical Immunology, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chiba City, Chiba, 260-8670, Japan
| | - Yoshihiro Ito
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan. .,R-NanoBio Co., Ltd., Wako-RIKEN Incubation Plaza, 3-13 Minami, Wako-shi, Saitama, 351-0104, Japan. .,Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.
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5
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Kostelic MM, Hsieh CC, Sanders HM, Zak CK, Ryan JP, Baker ES, Aspinwall CA, Marty MT. Surface Modified Nano-Electrospray Needles Improve Sensitivity for Native Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:1031-1037. [PMID: 35588532 DOI: 10.1021/jasms.2c00087] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Native mass spectrometry (MS) and charge detection-mass spectrometry (CD-MS) have become versatile tools for characterizing a wide range of proteins and macromolecular complexes. Both commonly use nanoelectrospray ionization (nESI) from pulled borosilicate needles, but some analytes are known to nonspecifically adsorb to the glass, which may lower sensitivity and limit the quality of the data. To improve the sensitivity of native MS and CD-MS, we modified the surface of nESI needles with inert surface modifiers, including polyethylene-glycol. We found that the surface modification improved the signal intensity for native MS of proteins and for CD-MS of adeno-associated viral capsids. Based on mechanistic comparisons, we hypothesize that the improvement is more likely due to an increased flow rate with coated ESI needles rather than less nonspecific adsorption. In any case, these surface-modified needles provide a simple and inexpensive method for improving the sensitivity of challenging analytes.
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Affiliation(s)
- Marius M Kostelic
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Chih-Chieh Hsieh
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Henry M Sanders
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Ciara K Zak
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
| | - Jack P Ryan
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27659, United States
| | - Erin S Baker
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27659, United States
| | - Craig A Aspinwall
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
- Bio5 Institute, University of Arizona, Tucson, Arizona 85721, United States
| | - Michael T Marty
- Department of Chemistry and Biochemistry, University of Arizona, Tucson, Arizona 85721, United States
- Bio5 Institute, University of Arizona, Tucson, Arizona 85721, United States
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6
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Nakatoh T, Osaki T, Tanimoto S, Jahan MGS, Kawakami T, Chihara K, Sakai N, Yumura S. Cell behaviors within a confined adhesive area fabricated using novel micropatterning methods. PLoS One 2022; 17:e0262632. [PMID: 35030217 PMCID: PMC8759655 DOI: 10.1371/journal.pone.0262632] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/31/2021] [Indexed: 01/06/2023] Open
Abstract
In the field of cell and tissue engineering, there is an increasing demand for techniques to spatially control the adhesion of cells to substrates of desired sizes and shapes. Here, we describe two novel methods for fabricating a substrate for adhesion of cells to a defined area. In the first method, the surface of the coverslip or plastic dish was coated with Lipidure, a non-adhesive coating material, and air plasma was applied through a mask with holes, to confer adhesiveness to the surface. In the second method, after the surface of the coverslip was coated with gold by sputtering and then with Lipidure; the Lipidure coat was locally removed using a novel scanning laser ablation method. These methods efficiently confined cells within the adhesive area and enabled us to follow individual cells for a longer duration, compared to the currently available commercial substrates. By following single cells within the confined area, we were able to observe several new aspects of cell behavior in terms of cell division, cell–cell collisions, and cell collision with the boundary between adhesive and non-adhesive areas.
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Affiliation(s)
- Tsukasa Nakatoh
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, Japan
| | | | - Sohma Tanimoto
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, Japan
| | - Md. Golam Sarowar Jahan
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, Japan
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi, Bangladesh
| | | | | | - Nobuyuki Sakai
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, Japan
| | - Shigehiko Yumura
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi, Japan
- * E-mail:
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7
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Chen PJ, Chen HY, Tsai WB. Fabrication of Low-Fouling Surfaces on Alkyne-Functionalized Poly-(p-xylylenes) Using Click Chemistry. Polymers (Basel) 2022; 14:polym14020225. [PMID: 35054631 PMCID: PMC8780154 DOI: 10.3390/polym14020225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/22/2021] [Accepted: 12/31/2021] [Indexed: 02/04/2023] Open
Abstract
A facial, versatile, and universal method that breaks the substrate limits is desirable for antifouling treatment. Thin films of functional poly-p-xylylenes (PPX) that are deposited using chemical vapor deposition (CVD) provide a powerful platform for surface immobilization of molecules. In this study, we prepared an alkyne-functionalized PPX coating on which poly (sulfobetaine methacrylate-co-Az) could be conjugated via click chemistry. We found that the conjugated polymers were very stable and inhibited cell adhesion and protein adsorption effectively. The same conjugation strategy could also be applied to conjugate azide-containing poly (ethylene glycol) and poly (NIPAAm). The results indicate that our method provides a simple and robust tool for fabricating antifouling surfaces on a wide range of substrates using CVD technology of functionalized poly (p-xylylenes) for biosensor, diagnostics, immunoassay, and other biomaterial applications.
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8
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Kashiwagi H, Morishima N, Obuse S, Isoshima T, Akimoto J, Ito Y. SARS-CoV-2 Proteins Microarray by Photoimmobilization for Serodiagnosis of the Antibodies. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210215] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Hiroharu Kashiwagi
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- R-NanoBio Co., Ltd., Wako-RIKEN Incubation Plaza, 3-13 Minami, Wako, Saitama 351-0104, Japan
| | - Nobuhiro Morishima
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Sei Obuse
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- R-NanoBio Co., Ltd., Wako-RIKEN Incubation Plaza, 3-13 Minami, Wako, Saitama 351-0104, Japan
| | - Takashi Isoshima
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Jun Akimoto
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Yoshihiro Ito
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- R-NanoBio Co., Ltd., Wako-RIKEN Incubation Plaza, 3-13 Minami, Wako, Saitama 351-0104, Japan
- Nano Medical Engineering Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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9
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Mechanical and Adsorptive Properties of Foamed EVA-Modified Polypropylene/Bamboo Charcoal Composites. MATERIALS 2021; 14:ma14061524. [PMID: 33804695 PMCID: PMC8003926 DOI: 10.3390/ma14061524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 11/17/2022]
Abstract
Due to its excellent adsorption and humidity control function, bamboo charcoal (BC) has often been mixed with polypropylene (PP) to produce PP/BC composites for interior paneling applications. However, due to the poor foaming quality of PP, PP/BC composites suffer as a result of their high density, which limits their scope of use. Here, to improve its foaming quality, PP was modified with ethylene vinyl acetate (EVA), and then the EVA-modified PP (E-PP) was mixed with different contents of BC (0 wt.%–50 wt.%), as well as foaming agent (Azodicarbonamide, AC) and its auxiliaries (ZnO, Znst), in a twin-screw extruder, followed by hot-pressing at high temperature to obtain foamed E-PP/BC composites. The resulting composites showed good porosity and pore distribution with an increase of BC content by up to 20%. Further increase in the BC content seemed to cause the foaming performance to decrease significantly. The product density and adsorption rate increased, while the mechanical strength decreased with increasing BC content. At a BC content of 40 wt.%, the foamed E-PP/BC composite showed the best combined performance, with a density of 0.90 g/cm3, 24-h formaldehyde adsorption rate of 0.48, and bending strength of 11.59 MPa.
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10
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Sone Y, Nogawa M, Asayama S. Designing a Bioinert Surface by Simple Coating with Cholesterol End-Modified Poly(ethylene glycol). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:12045-12052. [PMID: 33002363 DOI: 10.1021/acs.langmuir.0c02481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A bioinert surface has been designed by simple coating with cholesterol end-modified poly(ethylene glycol), Chol-U-Pr-mPEG, using a cholesterol anchor. A poly(propylene) (PP) surface was immersed into the Chol-U-Pr-mPEG aqueous solution, where control mPEGs without cholesterol were not suitable for the design of bioinert surfaces. The resulting surfaces coated with Chol-U-Pr-mPEG above and below its critical micelle concentration were swollen and less swollen, respectively. Chol-U-Pr-mPEG with a molecular weight of 2000, Chol-U-Pr-mPEG (2k), formed a swollen layer with a thickness of 10-15 nm and adhered to the PP surface with an estimated Kd value of 4.4×10-7 M. The resulting Chol-U-Pr-mPEG (2k)-coated surface with the swollen layer suppressed the adsorption of γ-globulin proteins and the adhesion of platelets in plasma. Although the PP surface coated with Chol-U-Pr-mPEG with a molecular weight of 5000, Chol-U-Pr-mPEG (5k), also suppressed the adsorption of γ-globulin proteins, the Chol-U-Pr-mPEG (5k)-coated PP surface did not suppress the adhesion of the platelets in plasma despite the existence of a swollen layer with a thickness of 20-25 nm. These results suggest that the Chol-U-Pr-mPEG-coated PP surface with an optimized swollen layer has been established as a bioinert surface by a facile method.
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Affiliation(s)
- Yuya Sone
- Department of Applied Chemistry, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Masayuki Nogawa
- Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, 2-1-67 Tatsumi, Koto-ku, Tokyo 135-8521, Japan
| | - Shoichiro Asayama
- Department of Applied Chemistry, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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11
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Akimoto J, Park SJ, Obuse S, Kawamoto M, Tamura M, Nandakumar A, Kobatake E, Ito Y. Synthesis of Photoreactive Poly(ethylene oxide)s for Surface Modification. ACS APPLIED BIO MATERIALS 2020; 3:5941-5947. [PMID: 35021822 DOI: 10.1021/acsabm.0c00628] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photoreactive polymers that generate active species upon irradiation with light are very useful for modifying the surfaces of substrates. However, water solubility decreases as the number of photoreactive functional groups on the polymer increases because most photoreactive functional groups are hydrophobic. In order to improve the hydrophilicity of the photoreactive polymer, we synthesized polyethylene glycol-based photoreactive polymers bearing hydrophobic azidophenyl groups on their side chains. Because of the hydrophilicity of the ethylene glycol main chain, polymers with large numbers of azidophenyl groups were solubilized in protic solvents compared to hydrophobic alkylene chain-based polymers prepared by radical polymerization of methacrylate monomers. Polymers were immobilized on various substrates by irradiation with ultraviolet light and were shown to suppress nonspecific interactions between proteins and cells on the substrate. We conclude that such polymers are useful, highly water soluble antifouling agents.
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Affiliation(s)
- Jun Akimoto
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - So Jung Park
- Nano Medical Engineering Laboratory, RIKEN Center for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuda-cho, Midori-ku, Yokohama 226-8502, Japan
| | - Sei Obuse
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Masuki Kawamoto
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Nano Medical Engineering Laboratory, RIKEN Center for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Mika Tamura
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Avanashiappan Nandakumar
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Eiry Kobatake
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuda-cho, Midori-ku, Yokohama 226-8502, Japan
| | - Yoshihiro Ito
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Nano Medical Engineering Laboratory, RIKEN Center for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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12
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Osborne M, Aryasomayajula A, Shakeri A, Selvaganapathy PR, Didar TF. Suppression of Biofouling on a Permeable Membrane for Dissolved Oxygen Sensing Using a Lubricant-Infused Coating. ACS Sens 2019; 4:687-693. [PMID: 30793884 DOI: 10.1021/acssensors.8b01541] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Specific ranges of dissolved oxygen (DO) concentrations must be maintained in a waterbody for it to be hospitable for aquatic animals. DO sensor designs can employ selectively permeable membranes to isolate DO from untargeted compounds or organisms in waterbodies. Hence, the DO concentration can be monitored and the health of the water can be evaluated over time. However, the presence of bacteria in natural waterbodies can lead to the formation of biofilms that can block pores and prevent analyte from permeating the membrane, resulting in inaccurate readings. In this work, we demonstrate the implementation of a fluorosilane-based omniphobic lubricant-infused (OLI) coating on a selectively permeable membrane and investigate the rate of biofilm formation for a commercially available DO sensor. Coated and unmodified membranes were incubated in an environment undergoing accelerated bacterial growth, and the change in sensitivity was evaluated after 40, 100, 250, and 500 h. Our findings show that the OLI membranes attenuate biofouling by 70% and maintain sensitivity after 3 weeks of incubation, further demonstrating that oxygen transfer through the OLI coating is achievable. Meanwhile, unmodified membranes exhibit significant biofouling that results in a 3.35 higher rate of decay in oxygen measurement sensitivity and an over 70% decrease in static contact angle. These results show that the OLI coating can be applied on commercially available membranes to prevent biofouling. Therefore, OLI coatings are a suitable candidate to suppress biofilm formation in the widespread use of selectively permeable membranes for environmental, medical, and fluid separation applications.
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Affiliation(s)
- Matthew Osborne
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, ETB 406, Hamilton, Ontario, Canada L8S 4K1
| | - Aditya Aryasomayajula
- Department of Mechanical Engineering, McMaster University, 1280 Main Street West, JHE 310, Hamilton, Ontario, Canada L8S 4L7
| | - Amid Shakeri
- Department of Mechanical Engineering, McMaster University, 1280 Main Street West, JHE 310, Hamilton, Ontario, Canada L8S 4L7
| | - Ponnambalam Ravi Selvaganapathy
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, ETB 406, Hamilton, Ontario, Canada L8S 4K1
- Department of Mechanical Engineering, McMaster University, 1280 Main Street West, JHE 310, Hamilton, Ontario, Canada L8S 4L7
| | - Tohid F. Didar
- School of Biomedical Engineering, McMaster University, 1280 Main Street West, ETB 406, Hamilton, Ontario, Canada L8S 4K1
- Department of Mechanical Engineering, McMaster University, 1280 Main Street West, JHE 310, Hamilton, Ontario, Canada L8S 4L7
- Institute for Infectious Disease Research, McMaster University, 1280 Main Street West, MDCL 2235, Hamilton, Ontario, Canada L8S 4K1
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13
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Brännström S, Johansson M, Malmström E. Enzymatically Synthesized Vinyl Ether-Disulfide Monomer Enabling an Orthogonal Combination of Free Radical and Cationic Chemistry toward Sustainable Functional Networks. Biomacromolecules 2019; 20:1308-1316. [DOI: 10.1021/acs.biomac.8b01710] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Sara Brännström
- KTH Royal Institute of Technology, Department of Fibre and Polymer Technology, SE-100 44 Stockholm, Sweden
| | - Mats Johansson
- KTH Royal Institute of Technology, Department of Fibre and Polymer Technology, SE-100 44 Stockholm, Sweden
| | - Eva Malmström
- KTH Royal Institute of Technology, Department of Fibre and Polymer Technology, SE-100 44 Stockholm, Sweden
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14
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Trel'ová D, Salgarella AR, Ricotti L, Giudetti G, Cutrone A, Šrámková P, Zahoranová A, Chorvát D, Haško D, Canale C, Micera S, Kronek J, Menciassi A, Lacík I. Soft Hydrogel Zwitterionic Coatings Minimize Fibroblast and Macrophage Adhesion on Polyimide Substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1085-1099. [PMID: 29792034 DOI: 10.1021/acs.langmuir.8b00765] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Minimizing the foreign body reaction to polyimide-based implanted devices plays a pivotal role in several biomedical applications. In this work, we propose materials exhibiting nonbiofouling properties and a Young's modulus reflecting that of soft human tissues. We describe the synthesis, characterization, and in vitro validation of poly(carboxybetaine) hydrogel coatings covalently attached to polyimide substrates via a photolabile 4-azidophenyl group, incorporated in poly(carboxybetaine) chains at two concentrations of 1.6 and 3.1 mol %. The presence of coatings was confirmed by attenuated total reflectance Fourier transform infrared spectroscopy. White light interferometry was used to evaluate the coating continuity and thickness (between 3 and 6 μm under dry conditions). Confocal laser scanning microscopy allowed us to quantify the thickness of the swollen hydrogel coatings that ranged between 13 and 32 μm. The different hydrogel formulations resulted in stiffness values ranging from 2 to 19 kPa and led to different fibroblast and macrophage responses in vitro. Both cell types showed a minimum adhesion on the softest hydrogel type. In addition, both the overall macrophage activation and cytotoxicity were observed to be negligible for all of the tested material formulations. These results are a promising starting point toward future advanced implantable systems. In particular, such technology paves the way for novel neural interfaces able to minimize the fibrotic reaction, once implanted in vivo, and to maximize their long-term stability and functionality.
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Affiliation(s)
- Dušana Trel'ová
- Department for Biomaterials Research , Polymer Institute of the Slovak Academy of Sciences , Dúbravská cesta 9 , 845 41 Bratislava , Slovakia
| | - Alice Rita Salgarella
- The BioRobotics Institute, Scuola Superiore Sant'Anna , Viale R. Piaggio 34 , 56025 Pontedera ( PI ), Italy
| | - Leonardo Ricotti
- The BioRobotics Institute, Scuola Superiore Sant'Anna , Viale R. Piaggio 34 , 56025 Pontedera ( PI ), Italy
| | - Guido Giudetti
- The BioRobotics Institute, Scuola Superiore Sant'Anna , Viale R. Piaggio 34 , 56025 Pontedera ( PI ), Italy
| | - Annarita Cutrone
- The BioRobotics Institute, Scuola Superiore Sant'Anna , Viale R. Piaggio 34 , 56025 Pontedera ( PI ), Italy
- SMANIA srl, via G. Volpe 12 , 56121 Pisa , Italy
| | - Petra Šrámková
- Department for Biomaterials Research , Polymer Institute of the Slovak Academy of Sciences , Dúbravská cesta 9 , 845 41 Bratislava , Slovakia
| | - Anna Zahoranová
- Department for Biomaterials Research , Polymer Institute of the Slovak Academy of Sciences , Dúbravská cesta 9 , 845 41 Bratislava , Slovakia
| | - Dušan Chorvát
- International Laser Centre , Ilkovičova 3 , Bratislava 841 04 , Slovak Republic
| | - Daniel Haško
- International Laser Centre , Ilkovičova 3 , Bratislava 841 04 , Slovak Republic
| | - Claudio Canale
- Department of Physics , University of Genova , Via dodecaneso 33 , 16133 Genova , Italy
- Department of Nanophysics , Istituto Italiano di Tecnologia (IIT) , Via Morego 30 , 16163 Genova , Italy
| | - Silvestro Micera
- The BioRobotics Institute, Scuola Superiore Sant'Anna , Viale R. Piaggio 34 , 56025 Pontedera ( PI ), Italy
- Bertarelli Foundation Chair in Translational Neuroengineering, Center for Neuroprosthetics and Institute of Bioengineering , Ecole Polytechnique Federale de Lausanne , 1015 , Lausanne , Switzerland
| | - Juraj Kronek
- Department for Biomaterials Research , Polymer Institute of the Slovak Academy of Sciences , Dúbravská cesta 9 , 845 41 Bratislava , Slovakia
| | - Arianna Menciassi
- The BioRobotics Institute, Scuola Superiore Sant'Anna , Viale R. Piaggio 34 , 56025 Pontedera ( PI ), Italy
| | - Igor Lacík
- Department for Biomaterials Research , Polymer Institute of the Slovak Academy of Sciences , Dúbravská cesta 9 , 845 41 Bratislava , Slovakia
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15
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Faÿ F, Gouessan M, Linossier I, Réhel K. Additives for Efficient Biodegradable Antifouling Paints. Int J Mol Sci 2019; 20:E361. [PMID: 30654517 PMCID: PMC6358926 DOI: 10.3390/ijms20020361] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/11/2019] [Accepted: 01/13/2019] [Indexed: 11/16/2022] Open
Abstract
The evolution of regulations concerning biocidal products aims to increase protection of the environment (e.g., EU Regulation No 528/2012) and requires the development of new non-toxic anti-fouling (AF) systems. The development of these formulations implies the use of ingredients (polymers, active substances, additives) that are devoid of toxicity towards marine environments. In this context, the use of erodable antifouling paints based on biodegradable polymer and authorized biocides responds to this problem. However, the efficiency of paints could be improved by the use of specific additives. For this purpose, three additives acting as surface modifiers were studied (Tween 80, Span 85 and PEG-silane). Their effects on parameters involved in antifouling efficiency as hydrophobicity, hydration and copper release were studied. Results showed that the addition of 3% of additives modulated hydrophobicity and hydration without an increase of copper release and significantly reduced microfouling development. Efficient paints based on biodegradable polymer and with no organic biocide could be obtained by mixing copper thiocyanate and additives.
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Affiliation(s)
- Fabienne Faÿ
- Université Bretagne Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France.
| | - Maëlle Gouessan
- Université Bretagne Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France.
| | | | - Karine Réhel
- Université Bretagne Sud, EA 3884, LBCM, IUEM, F-56100 Lorient, France.
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16
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Gevrek TN, Kosif I, Sanyal A. Surface-Anchored Thiol-Reactive Soft Interfaces: Engineering Effective Platforms for Biomolecular Immobilization and Sensing. ACS APPLIED MATERIALS & INTERFACES 2017; 9:27946-27954. [PMID: 28745494 DOI: 10.1021/acsami.7b07779] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Fabrication of antibiofouling, specifically reactive polymeric coatings that undergo facile functionalization with thiol-bearing small molecules and ligands, yields effective platforms for biomolecular immobilization and sensing. Poly(ethylene glycol) (PEG)-based copolymers containing alkoxysilyl groups to enable surface-anchoring and furan-protected maleimide groups as latent thiol-reactive moieties as side-chains were synthesized. Reactive interfaces were obtained by coating these copolymers onto Si/SiO2 or glass surfaces and activating the maleimide groups to their thiol-reactive forms via thermal treatment. A series of surfaces modified with copolymers containing varying amounts of maleimide groups were synthesized. Effectiveness of surface modification was probed using Fourier transform infrared spectroscopy, contact angle goniometry, ellipsometry and X-ray photoelectron spectroscopy. Facile surface modification through thiol-maleimide conjugation was established by attachment of a thiol-containing fluorescent dye, namely BODIPY-SH. It was demonstrated that these surfaces allow spatially localized modification through microcontact printing. Importantly, the extent of surface modification could be tuned by varying the initial composition of the copolymer used for coating. Using fluorescence microscopy, it was observed that increasing amount of fluorescent dye was attached onto surfaces fabricated with copolymers with increasing amount of masked maleimide groups. Thereafter, the thiol-maleimide conjugation was utilized to decorate these surfaces with biotin, a protein-binding ligand. It was observed that though these biotinylated surfaces were able to bind Streptavidin effectively, some nonspecific binding was observed on places that were not in conformal contact with the stamp during microcontact printing. This nonspecific binding was eliminated upon neutralizing the residual maleimide units on the printed surface using thiol-containing PEG. Notably, fluorescence analysis of Streptavidin immobilized onto biotinylated surfaces fabricated using varying amounts of maleimide demonstrated that the amount of immobilized protein could be tuned by varying surface composition. It can be envisioned that facile fabrication of these maleimide-containing polymeric surfaces, their effective functionalization in a tunable manner to engineer interfaces for effective immobilization or sensing of biomolecules in a spatially controlled manner would make them attractive candidates for various biotechnological applications.
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Affiliation(s)
- Tugce Nihal Gevrek
- Department of Chemistry, Bogazici University , Bebek, Istanbul 34342, Turkey
| | - Irem Kosif
- Department of Chemistry, Bogazici University , Bebek, Istanbul 34342, Turkey
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University , Bebek, Istanbul 34342, Turkey
- Center for Life Sciences and Technologies, Bogazici University , Bebek, Istanbul 34342, Turkey
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17
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Photoimmobilization of zwitterionic polymers on surfaces to reduce cell adhesion. J Colloid Interface Sci 2017; 500:294-303. [DOI: 10.1016/j.jcis.2017.04.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/06/2017] [Accepted: 04/06/2017] [Indexed: 01/23/2023]
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18
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Babaei F, Alavi SE, Ebrahimi Shahmabadi H, Akbarzadeh A. Synthesis and characterization of polyethylene glycols conjugated to polybutylcyanoacrylate nanoparticles. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2016.1263953] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Faezeh Babaei
- Department of Pilot Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Seyed Ebrahim Alavi
- Department of Pilot Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Hasan Ebrahimi Shahmabadi
- Department of Microbiology, School of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Azim Akbarzadeh
- Department of Pilot Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran
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19
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Biofunctional polyethylene glycol coatings on titanium: An in vitro -based comparison of functionalization methods. Colloids Surf B Biointerfaces 2017; 152:367-375. [DOI: 10.1016/j.colsurfb.2017.01.042] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 01/20/2017] [Accepted: 01/23/2017] [Indexed: 01/25/2023]
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20
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Chien HW, Cheng PH, Chen SY, Yu J, Tsai WB. Low-fouling and functional poly(carboxybetaine) coating via a photo-crosslinking process. Biomater Sci 2017; 5:523-531. [DOI: 10.1039/c6bm00637j] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Antifouling modification technology is developed for many biomedical applications such as blood-contact devices and biosensors.
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Affiliation(s)
- Hsiu-Wen Chien
- Department of Chemical Engineering
- National Taiwan University
- Taipei 106
- Taiwan
| | - Po-Hsiu Cheng
- Department of Chemical Engineering
- National Taiwan University
- Taipei 106
- Taiwan
| | - Shao-Yung Chen
- Department of Chemical Engineering
- National Taiwan University
- Taipei 106
- Taiwan
| | - Jiashing Yu
- Department of Chemical Engineering
- National Taiwan University
- Taipei 106
- Taiwan
| | - Wei-Bor Tsai
- Department of Chemical Engineering
- National Taiwan University
- Taipei 106
- Taiwan
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21
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Heo Y, Kim EH, Kobatake E, Nah JW, Ito Y, Son TI. Preparation of phosphonated gelatin-coated titanium containing rhBMP-2 by UV irradiation for improved osteoinduction and function. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.01.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Zhou X, Park SH, Mao H, Isoshima T, Wang Y, Ito Y. Nanolayer formation on titanium by phosphonated gelatin for cell adhesion and growth enhancement. Int J Nanomedicine 2015; 10:5597-607. [PMID: 26366080 PMCID: PMC4562736 DOI: 10.2147/ijn.s82166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Phosphonated gelatin was prepared for surface modification of titanium to stimulate cell functions. The modified gelatin was synthesized by coupling with 3-aminopropylphosphonic acid using water-soluble carbodiimide and characterized by (31)P nuclear magnetic resonance and gel permeation chromatography. Circular dichroism revealed no differences in the conformations of unmodified and phosphonated gelatin. However, the gelation temperature was changed by the modification. Even a high concentration of modified gelatin did not form a gel at room temperature. Time-of-flight secondary ion mass spectrometry showed direct bonding between the phosphonated gelatin and the titanium surface after binding. The binding behavior of phosphonated gelatin on the titanium surface was quantitatively analyzed by a quartz crystal microbalance. Ellipsometry showed the formation of a several nanometer layer of gelatin on the surface. Contact angle measurement indicated that the modified titanium surface was hydrophobic. Enhancement of the attachment and spreading of MC-3T3L1 osteoblastic cells was observed on the phosphonated gelatin-modified titanium. These effects on cell adhesion also led to growth enhancement. Phosphonation of gelatin was effective for preparation of a cell-stimulating titanium surface.
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Affiliation(s)
- Xiaoyue Zhou
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
- Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin, People’s Republic of China
| | - Shin-Hye Park
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
| | - Hongli Mao
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, Wako, Saitama, Japan
| | - Takashi Isoshima
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
| | - Yi Wang
- Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun, Jilin, People’s Republic of China
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, Wako, Saitama, Japan
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23
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Gao T, Zhang N, Wang Z, Wang Y, Liu Y, Ito Y, Zhang P. Biodegradable Microcarriers of Poly(Lactide-co-Glycolide) and Nano-Hydroxyapatite Decorated with IGF-1 via Polydopamine Coating for Enhancing Cell Proliferation and Osteogenic Differentiation. Macromol Biosci 2015; 15:1070-80. [PMID: 25950171 DOI: 10.1002/mabi.201500069] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 04/16/2015] [Indexed: 11/08/2022]
Abstract
In this study, insulin-like growth factor 1 (IGF-1) was successfully immobilized on the poly(lactide-co-glycolide)/hydroxyapatite (PLGA/HA) and pure PLGA microcarriers via polydopamine (pDA). The results demonstrated that the pDA layer facilitated simple and highly efficient immobilization of peptides on the microcarriers within 20 min. Mouse adipose-derived stem cells (ADSCs) attachment and proliferation on IGF-1-immobilized microcarriers were much higher than non-immobilized ones. More importantly, the IGF-1-immobilized PLGA/HA microcarriers significantly increased alkaline phosphatase (ALP) activity and expression of osteogenesis-related genes of ADSCs. Therefore, it is considered that the IGF-1-decorated PLGA/HA microcarriers will be of great value in the bone tissue engineering.
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Affiliation(s)
- Tianlin Gao
- School of Public Health, Jilin University, Changchun, 130021, P. R. China.,Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Ning Zhang
- Department of Foot and Ankle Surgery, The Second Hospital of Shandong University, Jinan, 250000, P. R. China
| | - Zongliang Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Yu Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Ya Liu
- School of Public Health, Jilin University, Changchun, 130021, P. R. China.
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN, 2-1-Hirosawa, Wako, Saitama, 351-0198, Japan.,Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Materials Science, 2-1-Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Peibiao Zhang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China.
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24
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Yang X, Zhu L, Tada S, Zhou D, Kitajima T, Isoshima T, Yoshida Y, Nakamura M, Yan W, Ito Y. Mussel-inspired human gelatin nanocoating for creating biologically adhesive surfaces. Int J Nanomedicine 2014; 9:2753-65. [PMID: 24920909 PMCID: PMC4045085 DOI: 10.2147/ijn.s60624] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Recombinant human gelatin was conjugated with dopamine using carbodiimide as a surface modifier. This dopamine-coupled human gelatin (D-rhG) was characterized by 1H-nuclear magnetic resonance, mass spectroscopy, and circular dichroism. D-rhG-coated surface properties were analyzed by physicochemical methods. Additionally, cell attachment and growth on the modified surfaces was assessed using human umbilical endothelial cells. Binding of gelatin onto titanium was significantly enhanced by dopamine conjugation. The thickness of the D-rhG coating depended on the treatment pH; thicker layers were formed at higher pH values, with a maximum thickness of 30 nm. D-rhG enhanced the binding of collagen-binding vascular endothelial growth factor and cell adhesion as compared with gelatin alone, even at the same surface concentration. The D-rhG surface modifier enhanced substrate binding by creating an adhesive nanointerface that increased specific protein binding and cell attachment.
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Affiliation(s)
- Xi Yang
- Nano Medical Engineering Laboratory, RIKEN, Saitama, Japan ; School of Pharmaceutical Sciences, Jilin University, Jilin, People's Republic of China
| | - Liping Zhu
- Nano Medical Engineering Laboratory, RIKEN, Saitama, Japan
| | - Seiichi Tada
- Nano Medical Engineering Laboratory, RIKEN, Saitama, Japan
| | - Di Zhou
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, Saitama
| | | | | | - Yasuhiro Yoshida
- Nano Medical Engineering Laboratory, RIKEN, Saitama, Japan ; Department of Biomaterials and Bioengineering, Graduate School of Dental Medicine, Hokkaido University, Hokkaido
| | - Mariko Nakamura
- Nano Medical Engineering Laboratory, RIKEN, Saitama, Japan ; Dental Hygiene Program, Kibi International College, Okayama, Japan
| | - Weiqun Yan
- School of Pharmaceutical Sciences, Jilin University, Jilin, People's Republic of China
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN, Saitama, Japan ; Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, Saitama
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25
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Heo Y, Park SH, Seo SY, Yun JY, Ito Y, Son TI. Preparation and in vivo evaluation of photo-cured O-carboxymethyl chitosan micro-particle for controlled drug delivery. Macromol Res 2014. [DOI: 10.1007/s13233-014-2079-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Tada S, Timucin E, Kitajima T, Sezerman OU, Ito Y. Direct in vitro selection of titanium-binding epidermal growth factor. Biomaterials 2014; 35:3497-503. [DOI: 10.1016/j.biomaterials.2014.01.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2013] [Accepted: 01/07/2014] [Indexed: 02/01/2023]
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27
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Larsen EKU, Mikkelsen MBL, Larsen NB. Facile photoimmobilization of proteins onto low-binding PEG-coated polymer surfaces. Biomacromolecules 2014; 15:894-9. [PMID: 24524417 DOI: 10.1021/bm401745a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Immobilization of proteins onto polymer surfaces usually requires specific reactive functional groups. Here, we show an easy one-step method to conjugate protein covalently onto almost any polymer surface, including low protein-binding poly(ethylene glycol) (PEG), without the requirement for the presence of specific functional groups. Several types of proteins, including alkaline phosphatase, bovine serum albumin, and polyclonal antibodies, were photoimmobilized onto a PEG-coated polymer surface using a water-soluble benzophenone as photosensitizer. Protein functionality after immobilization was verified for both enzymes and antibodies, and their presence on the surface was confirmed by X-ray photoelectron spectroscopy (XPS) and confocal fluorescence microscopy. Conjugation of capture antibody onto the PEG coating was employed for a simplified ELISA protocol without the need for blocking uncoated surface areas, showing ng/mL sensitivity to a cytokine antigen target. Moreover, spatially patterned attachment of fluorescently labeled protein onto the low-binding PEG-coated surface was achieved with a projection lithography system that enabled the creation of micrometer-sized protein features.
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Affiliation(s)
- Esben Kjær Unmack Larsen
- Department of Micro- and Nanotechnology, DTU Nanotech, Technical University of Denmark , Ørsteds Plads 345E, DK-2800 Kgs. Lyngby, Denmark
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28
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Sivakumar PM, Moritsugu N, Obuse S, Isoshima T, Tashiro H, Ito Y. Novel microarrays for simultaneous serodiagnosis of multiple antiviral antibodies. PLoS One 2013; 8:e81726. [PMID: 24367491 PMCID: PMC3867344 DOI: 10.1371/journal.pone.0081726] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Accepted: 10/07/2013] [Indexed: 11/19/2022] Open
Abstract
We developed an automated diagnostic system for the detection of virus-specific immunoglobulin Gs (IgGs) that was based on a microarray platform. We compared efficacies of our automated system with conventional enzyme immunoassays (EIAs). Viruses were immobilized to microarrays using a radical cross-linking reaction that was induced by photo-irradiation. A new photoreactive polymer containing perfluorophenyl azide (PFPA) and poly(ethylene glycol) methacrylate was prepared and coated on plates. Inactivated measles, rubella, mumps, Varicella-Zoster and recombinant Epstein-Barr viruse antigen were added to coated plates, and irradiated with ultraviolet light to facilitate immobilization. Virus-specific IgGs in healthy human sera were assayed using these prepared microarrays and the results obtained compared with those from conventional EIAs. We observed high correlation (0.79-0.96) in the results between the automated microarray technique and EIAs. The microarray-based assay was more rapid, involved less reagents and sample, and was easier to conduct compared with conventional EIA techniques. The automated microarray system was further improved by introducing reagent storage reservoirs inside the chamber, thereby conserving the use of expensive reagents and antibodies. We considered the microarray format to be suitable for rapid and multiple serological diagnoses of viral diseases that could be developed further for clinical applications.
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Affiliation(s)
| | - Nozomi Moritsugu
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
| | - Sei Obuse
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
| | - Takashi Isoshima
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
| | - Hideo Tashiro
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
- Consonal Biotechnologies Co., Ltd., Funabashi, Chiba, Japan
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory, RIKEN, Wako, Saitama, Japan
- Consonal Biotechnologies Co., Ltd., Funabashi, Chiba, Japan
- Emergent Bioengineering Materials Research Team, RIKEN Center for Emergent Matter Science, Wako, Saitama, Japan
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29
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Park SH, Zhu L, Tada S, Obuse S, Yoshida Y, Nakamura M, Son TI, Tsuneda S, Ito Y. Phosphorylated gelatin to enhance cell adhesion to titanium. POLYM INT 2013. [DOI: 10.1002/pi.4647] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shin-Hye Park
- Nano Medical Engineering Laboratory; RIKEN; 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Department of Life Science and Medical Bio-Science, Waseda University; 2-2 Wakamatsu-cho; Shinjuku-ku Tokyo 162-8480 Japan
| | - Liping Zhu
- Nano Medical Engineering Laboratory; RIKEN; 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Seiichi Tada
- Nano Medical Engineering Laboratory; RIKEN; 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Sei Obuse
- Nano Medical Engineering Laboratory; RIKEN; 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Yasuhiro Yoshida
- Nano Medical Engineering Laboratory; RIKEN; 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Department of Biomaterials, Okayama University Graduate School of Medicine; Dentistry and Pharmaceutical Sciences; 2-5-1 Shikata-Cho Kikta-Ku, Okayama 700-8558 Japan
| | - Mariko Nakamura
- Nano Medical Engineering Laboratory; RIKEN; 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Dental Hygiene Program; Kibi International College; 8 Iga-cho, Takahashi Okayama 716-8508 Japan
| | - Tae Il Son
- Nano Medical Engineering Laboratory; RIKEN; 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Department of Bioscience and Biotechnology; Chung-Ang University; 40-1 San, Nae-Ri, Daeduck-myun Ansung-si Kyungki-do 456-756 Korea
| | - Satoshi Tsuneda
- Nano Medical Engineering Laboratory; RIKEN; 2-1 Hirosawa Wako Saitama 351-0198 Japan
- Department of Life Science and Medical Bio-Science, Waseda University; 2-2 Wakamatsu-cho; Shinjuku-ku Tokyo 162-8480 Japan
| | - Yoshihiro Ito
- Nano Medical Engineering Laboratory; RIKEN; 2-1 Hirosawa Wako Saitama 351-0198 Japan
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Sivakumar PM, Zhou D, Son TI, Ito Y. Design and Synthesis of Photoreactive Polymers for Biomedical Applications. Biomimetics (Basel) 2013. [DOI: 10.1002/9781118810408.ch11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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Kaneko S, Yamaguchi K, Nakanishi J. Dynamic substrate based on photocleavable poly(ethylene glycol): zeta potential determines the capability of geometrical cell confinement. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:7300-7308. [PMID: 23298202 DOI: 10.1021/la304569e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Dynamic substrates whose cell adhesiveness changes in response to an external stimulus are useful not only for patterning cells in various geometries but also for inducing cell migration or arraying heterotypic cells. The requirements for such applications are high switching efficiency in cell adhesiveness and long-term persistence of the created cellular patterns. In this study, we prepared a dynamic substrate bearing photocleavable poly(ethylene glycol) (PEG) and examined the effect of the surface PEG density and the charge of cationic base materials on the above-mentioned key requirements. An amino-terminated substrate with a certain amino group density and charge was functionalized with photocleavable PEG5K, with and without subsequent backfilling of photocleavable PEG2K. The PEG chains made the surface non-cell-adhesive, but subsequent near-UV irradiation of the substrate induced photocleavage of the PEG, eventually making the surface cell-adhesive. The substrates were analyzed by atomic force microscopy, contact angle measurements, ellipsometry, and zeta potential measurements, complemented with protein adsorption observations. Although the density of amino group in the base material affected both the grafting efficiency of the backfilling PEG and the electrokinetic potential mainly in the positive range, the latter mainly determined the protein- and cell-repelling abilities of the substrates. Furthermore, varying the surface compositions had almost no effect on the switching efficiency in the early stage of the culture, but it became more significant after culturing cells for a longer time; the cells fouled the nonirradiated PEGylated regions earlier on the surfaces with higher positive zeta potentials. These results indicate that the zeta potential is an essential factor in the long-term persistence of cellular patterns on photoactivatable substrates. This study not only provides a recipe for the development of a dynamic substrate with an adequate time frame but also clarifies how the interfacial nanoarchitectures, composed of the nanometer-scale PEG brushes and charged base materials, affect the biocompatibility.
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Affiliation(s)
- Shingo Kaneko
- World Premier International (WPI) Research Center Initiative, International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Japan
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Joddar B, Albayrak A, Kang J, Nishihara M, Abe H, Ito Y. Sustained delivery of siRNA from dopamine-coated stainless steel surfaces. Acta Biomater 2013; 9:6753-61. [PMID: 23333442 DOI: 10.1016/j.actbio.2013.01.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 01/02/2013] [Accepted: 01/07/2013] [Indexed: 10/27/2022]
Abstract
Dopamine, an adhesive protein can be covalently deposited onto biomaterials. In this study, we evaluated the ability of dopamine-coated surfaces for small interfering RNA (siRNA) immobilization and release. Dopamine was deposited onto 316L stainless steel discs either as a monolayer at acidic pH or as polydopamine at alkaline pH, following which siRNA was immobilized onto these discs. To investigate the RNA interference ability of immobilized siRNA, reduction of luciferase expression in HeLa, and reduction of Egr-1 expression and cell proliferation in human aortic smooth muscle cells (HAoSMCs) were determined. Dopamine treatment of 316L stainless steel discs under both the acidic and alkaline conditions resulted in the deposition of amino (NH2) groups, which enabled electrostatic immobilization of siRNA. The immobilized siRNA was released from both types of coatings, and enhanced the percent suppression of firefly luciferase activity of HeLa significantly up to ~96.5% compared to HeLa on non-dopamine controls (18%). Both the release of siRNA and the percent suppression of firefly luciferase activity were sustained for at least 7 days. In another set of experiments, siRNA sequences targeting to inhibit the activity of the transcription factor Egr-1 were eluted from dopamine-coated surfaces to HAoSMCs. Egr-1 siRNA eluted from dopamine-coated surfaces, significantly reduced the proliferation of HAoSMCs and their protein expression of Egr-1. Therefore, this method of surface immobilization of siRNA onto dopamine-coated surfaces might be effective for nucleic acid delivery from stents.
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Immobilization of epidermal growth factor on titanium and stainless steel surfaces via dopamine treatment. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2012.07.039] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Hanawa T. Research and development of metals for medical devices based on clinical needs. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2012; 13:064102. [PMID: 27877526 PMCID: PMC5099759 DOI: 10.1088/1468-6996/13/6/064102] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2012] [Revised: 12/13/2012] [Accepted: 10/18/2012] [Indexed: 05/27/2023]
Abstract
The current research and development of metallic materials used for medicine and dentistry is reviewed. First, the general properties required of metals used in medical devices are summarized, followed by the needs for the development of α + β type Ti alloys with large elongation and β type Ti alloys with a low Young's modulus. In addition, nickel-free Ni-Ti alloys and austenitic stainless steels are described. As new topics, we review metals that are bioabsorbable and compatible with magnetic resonance imaging. Surface treatment and modification techniques to improve biofunctions and biocompatibility are categorized, and the related problems are presented at the end of this review. The metal surface may be biofunctionalized by various techniques, such as dry and wet processes. These techniques make it possible to apply metals to scaffolds in tissue engineering.
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Ito Y, Moritsugu N, Matsue T, Mitsukoshi K, Ayame H, Okochi N, Hattori H, Tashiro H, Sato S, Ebisawa M. An automated multiplex specific IgE assay system using a photoimmobilized microarray. J Biotechnol 2012; 161:414-21. [PMID: 22921501 DOI: 10.1016/j.jbiotec.2012.07.196] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2012] [Revised: 07/02/2012] [Accepted: 07/11/2012] [Indexed: 10/28/2022]
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Kim DK, Lee CH. Synthesis of Novel Copolymer for Selective Biomolecule Immobilization on Gold Surface. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.6.2099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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High PEGylation efficiency of pentaethylenehexamine-end poly(ethylene glycol) (mPEG-N6) for active-ester surface. Colloids Surf B Biointerfaces 2012; 92:25-9. [DOI: 10.1016/j.colsurfb.2011.11.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 11/02/2011] [Indexed: 11/22/2022]
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Kuo WH, Wang MJ, Chang CW, Wei TC, Lai JY, Tsai WB, Lee C. Improvement of hemocompatibility on materials by photoimmobilization of poly(ethylene glycol). ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15435h] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hanawa T. A comprehensive review of techniques for biofunctionalization of titanium. J Periodontal Implant Sci 2011; 41:263-72. [PMID: 22324003 PMCID: PMC3259234 DOI: 10.5051/jpis.2011.41.6.263] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Accepted: 11/10/2011] [Indexed: 11/08/2022] Open
Abstract
A number of surface modification techniques using immobilization of biofunctional molecules of Titanium (Ti) for dental implants as well as surface properties of Ti and Ti alloys have been developed. The method using passive surface oxide film on titanium takes advantage of the fact that the surface film on Ti consists mainly of amorphous or low-crystalline and non-stoichiometric TiO(2). In another method, the reconstruction of passive films, calcium phosphate naturally forms on Ti and its alloys, which is characteristic of Ti. A third method uses the surface active hydroxyl group. The oxide surface immediately reacts with water molecules and hydroxyl groups are formed. The hydroxyl groups dissociate in aqueous solutions and show acidic and basic properties. Several additional methods are also possible, including surface modification techniques, immobilization of poly(ethylene glycol), and immobilization of biomolecules such as bone morphogenetic protein, peptide, collagen, hydrogel, and gelatin.
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Affiliation(s)
- Takao Hanawa
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
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Kitajima T, Obuse S, Adachi T, Tomita M, Ito Y. Recombinant human gelatin substitute with photoreactive properties for cell culture and tissue engineering. Biotechnol Bioeng 2011; 108:2468-76. [PMID: 21538336 DOI: 10.1002/bit.23192] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 04/06/2011] [Accepted: 04/15/2011] [Indexed: 11/07/2022]
Abstract
The human recombinant collagen I α1 chain monomer (rh-gelatin) was modified by the incorporation of an azidophenyl group to prepare photoreactive human gelatin (Az-rh-gelatin), with approximately 90% of the lysine residues conjugated with azidobenzoic acid. Slight changes in conformation (circular dichroism spectra) and thermal properties (gelation and melting points) were noticed after modification. Ultraviolet (UV) irradiation could immobilize the Az-rh-gelatin on polymer surfaces, such as polystyrene and polytetrafluoroethylene. Az-rh-gelatin was stably retained on the polymer surfaces, while unmodified gelatin was mostly lost by brief washing. Human mesenchymal cells grew more efficiently on the immobilized surface than on the coated surface. The immobilized Az-rh-gelatin on the polymer surfaces was able to capture engineered growth factors with collagen affinity, and the bound growth factors stimulated the growth of cells dose-dependently. It was also possible to immobilize Az-rh-gelatin in micropatterns (stripe, grid, and so on) using photomasks, and the cells grew according to the patterns. These results suggest that the photoreactive human gelatin, in combination with collagen-binding growth factors, will be clinically useful for surface modification of synthetic materials for cell culture systems and tissue engineering.
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Affiliation(s)
- Takashi Kitajima
- Nano Medical Engineering Laboratory, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako-shi, Saitama 351-0198 Japan
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Sima F, Axente E, Ristoscu C, Mihailescu IN, Kononenko TV, Nagovitsin IA, Chudinova G, Konov VI, Socol M, Enculescu I, Sima LE, Petrescu SM. Tailoring immobilization of immunoglobulin by excimer laser for biosensor applications. J Biomed Mater Res A 2010; 96:384-94. [DOI: 10.1002/jbm.a.32991] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2010] [Accepted: 10/05/2010] [Indexed: 11/06/2022]
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Son TI, Sakuragi M, Takahashi S, Obuse S, Kang J, Fujishiro M, Matsushita H, Gong J, Shimizu S, Tajima Y, Yoshida Y, Suzuki K, Yamamoto T, Nakamura M, Ito Y. Visible light-induced crosslinkable gelatin. Acta Biomater 2010; 6:4005-10. [PMID: 20580950 DOI: 10.1016/j.actbio.2010.05.018] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2009] [Revised: 05/14/2010] [Accepted: 05/19/2010] [Indexed: 11/17/2022]
Abstract
A novel visible light-crosslinkable porcine gelatin was prepared for gelation and micropatterning. The preparation employed a photo-oxidation-induced crosslinking mechanism. First, furfuryl groups were incorporated into the gelatin. Second, the modified gelatin was mixed in water with Rose Bengal, which is a visible light sensitizer. Irradiation by visible light solidified the aqueous solution. In addition, when the solution was cast on a plate, dried and photo-irradiated in the presence of a photomask a micropattern was formed that matched the micropattern on the photomask. The gelatin-immobilized regions enhanced cell adhesion. It was also confirmed that the gelatin incorporating furfuryl and Rose Bengal have no significant toxicity. The photo-crosslinkable gelatin was employed as a direct pulp capping material in the dental field. Considering these results, this system could be useful as a new type of visible light-induced crosslinkable biosealant.
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Affiliation(s)
- Tae Il Son
- RIKEN Advanced Science Institute, Wako-shi, Saitama, Japan
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A photoimmobilizable sulfobetaine-based polymer for a nonbiofouling surface. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2010; 30:316-322. [DOI: 10.1016/j.msec.2009.11.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Revised: 11/10/2009] [Accepted: 11/13/2009] [Indexed: 10/20/2022]
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Abstract
We present many examples of surface engineered polymeric biomaterials with nanosize modified layers, controlled protein adsorption, and cellular interactions potentially applicable for tissue and/or blood contacting devices, scaffolds for cell culture and tissue engineering, biosensors, biological microchips as well as approaches to their preparation.
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Kim KI, Lee JW, Ito Y, Kang JH, Song KS, Jang EC, Son TI. Preparation of photo-reactive azidophenyl chitosan derivative for immobilization of growth factors. J Appl Polym Sci 2010. [DOI: 10.1002/app.32179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Gautier C, Ghodbane O, Wayner DD, Bélanger D. Modification of glassy carbon electrodes by 4-chloromethylphenyl units and d-glucosaminic acid. Electrochim Acta 2009. [DOI: 10.1016/j.electacta.2009.05.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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A chimeric epidermal growth factor with fibrin affinity promotes repair of injured keratinocyte sheets. Acta Biomater 2009; 5:2623-32. [PMID: 19376761 DOI: 10.1016/j.actbio.2009.03.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2008] [Revised: 02/19/2009] [Accepted: 03/20/2009] [Indexed: 11/21/2022]
Abstract
The aim of the present study is to create a novel chimeric protein of epidermal growth factor (EGF) with fibrin affinity and demonstrate its potential for repairing injured tissues by immobilization to fibrin. The chimeric protein (FBD-EGF) was produced by the fusion of the fibronectin fibrin-binding domain (FBD) to EGF. It showed dose-dependent binding to fibrin and its binding was stable for at least 7days, while native EGF showed little affinity. FBD-EGF promoted the growth of fibroblasts and keratinocytes in the fibrin-bound state as well as in the soluble state. Its activity was further studied in a keratinocyte culture system in which fibrin was exposed upon injury of cell sheets. Fibrin-bound FBD-EGF promoted growth of the sheets over the injured area at a significantly faster rate (approximately eightfold) than native EGF (p<0.01). Wounds 2mm wide were closed in 7-9days. This repair process was inhibited by anti-EGF. Keratinocytes proliferated more extensively in the leading edges of sheets contacting fibrin with FBD-EGF, approximately 1.7-fold more than in the adjacent regions. These results imply that the stable binding of chimeric EGF to fibrin is effective for the repair of injured keratinocyte sheets, suggesting a potential use in tissue engineering.
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Wei Y, Latour RA. Benchmark experimental data set and assessment of adsorption free energy for peptide-surface interactions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:5637-46. [PMID: 19432493 PMCID: PMC2756418 DOI: 10.1021/la8042186] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
With the increasing interest in protein adsorption in fields ranging from bionanotechnology to biomedical engineering, there is a growing need to understand protein-surface interactions at a fundamental level, such as the interaction between individual amino acid residues of a protein and functional groups presented by a surface. However, relatively little data are available that experimentally provide a quantitative, comparative measure of these types of interactions. To address this deficiency, the objective of this study was to generate a database of experimentally measured standard state adsorption free energy (DeltaGoads) values for a wide variety of amino acid residue-surface interactions using a host-guest peptide and alkanethiol self-assembled monolayers (SAMs) with polymer-like functionality as the model system. The host-guest amino acid sequence was synthesized in the form of TGTG-X-GTGT, where G and T are glycine and threonine amino acid residues and X represents a variable residue. In this paper, we report DeltaGoads values for the adsorption of 12 different types of the host-guest peptides on a set of nine different SAM surfaces, for a total of 108 peptide-surface systems. The DeltaGoads values for these 108 peptide-surface combinations show clear trends in adsorption behavior that are dependent on both peptide composition and surface chemistry. These data provide a benchmark experimental data set from which fundamental interactions that govern peptide and protein adsorption behavior can be better understood and compared.
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