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Misaizu R, Endo-Takahashi Y, Nirasawa K, Negishi Y, Asayama S. Diffusive delivery of plasmid DNA using zwitterionic carboxyalkyl poly(1-vinylimidazole) into skeletal muscle in vivo. Biomater Sci 2024. [PMID: 38949480 DOI: 10.1039/d4bm00510d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
Zwitterionic carboxyalkyl poly(1-vinylimidazole) (CA-PVIm) polymers with imidazolium cations and carboxylate anions have been synthesized as a carrier for the in vivo delivery of plasmid DNA (pDNA) to skeletal muscle. From differential scanning calorimetry measurements, resulting CA-PVIm had intermediate water in hydration water as a biocompatible polymer. Notably, when the pDNA and resulting CA-PVIm were mixed, slight retarded bands of the pDNA were observed in agarose gel electrophoresis, suggesting the polyion complex (PIC) formation between the pDNA and CA-PVIm despite zwitterionic polymers. Resulting PICs maintained the higher-order structure of the pDNA. Using resulting pDNA PICs, the highest pDNA expression by intramuscular injection was achieved in the PIC with 7 mol% carboxymethylated PVIm, that is, CA1(7)-PVIm, observed in a widespread area by in vivo imaging system. These results suggest that the CA1(7)-PVIm/pDNA PIC is effective for the diffusive delivery of the pDNA into skeletal muscle for the treatment of serious muscle diseases.
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Affiliation(s)
- Ren Misaizu
- Department of Applied Chemistry, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan.
| | - Yoko Endo-Takahashi
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Kei Nirasawa
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yoichi Negishi
- School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Shoichiro Asayama
- Department of Applied Chemistry, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan.
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Mochizuki A, Udagawa A, Miwa Y, Oda Y, Yoneyama K, Okuda C. Blood compatibility of poly(propylene glycol diester) and its water structure observed by differential scanning calorimetry and 2H-nuclear magnetic resonance spectroscopy. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2024; 35:1258-1272. [PMID: 38457333 DOI: 10.1080/09205063.2024.2324505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 11/17/2023] [Indexed: 03/10/2024]
Abstract
Recently, we applied solution 2H-nuclear magnetic resonance spectroscopy (2H NMR) to analyze the water (deuterium oxide, D2O) structure in several biopolymers at ambient temperature. We established that polymers with good blood compatibility (i.e. poly(2-methoxyethyl acrylate) (PMEA)) have water observed at high magnetic fields (upfield) compared with bulk water. Polymers containing poly(propylene glycol) (PPG) or poly(propylene oxide) (PPO) exhibit good compatibility; however, the reason for this remains unclear. In addition, reports on the blood compatibility of PPO/PPG are limited. Therefore, PPG diester (PPGest) was prepared as a model polymer, and its blood compatibility and water structure were investigated. PPGest exhibited excellent blood compatibility. The water in PPGest was observed upfield by 2H NMR, and it was defined as non-freezing water via differential scanning calorimetry. Based on these observations, the relationship between the blood compatibility and water structure of PPGest is discussed by comparing with those of PMEA, and the reason for the good performance of PPG/PPO-based polymers is discussed.
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Affiliation(s)
- Akira Mochizuki
- Department of Bio-Medical Engineering, School of Engineering, Tokai University, Isehara, Japan
| | - Ayaka Udagawa
- Department of Bio-Medical Engineering, School of Engineering, Tokai University, Isehara, Japan
| | | | - Yoshiki Oda
- Technology Joint Management Office of Tokai University, Hiratsuka, Japan
| | - Konatsu Yoneyama
- Department of Bio-Medical Engineering, School of Engineering, Tokai University, Isehara, Japan
| | - Chihiro Okuda
- Department of Bio-Medical Engineering, School of Engineering, Tokai University, Isehara, Japan
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3
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Maduell F, Broseta JJ, Rodríguez-Espinosa D, Rodas LM, Gómez M, Arias-Guillén M, Fontseré N, Vera M, Salgado MDC, Rico N, Ramos R. Comparison of efficacy and safety of the new generation helixone dialyzers. Nefrologia 2024:S2013-2514(24)00093-2. [PMID: 38679516 DOI: 10.1016/j.nefroe.2024.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 02/27/2024] [Indexed: 05/01/2024] Open
Abstract
INTRODUCTION New generation helixone dialyzers has recently been developed as part of the ongoing effort to improve dialyzer hemocompatibility and avoid adverse reactions to synthetic dialyzers. This study aimed to assess the performance and albumin loss of this new dialyzer series in hemodiafiltration and compare it with the previous generation helixone series. MATERIAL AND METHODS A prospective study was conducted in 19 patients. Each patient underwent eight dialysis sessions with the same routine dialysis parameters; only the dialyzer varied: FX60 CorDiax, FX CorAL 60, FX600 CorDiax, FX CorAL 600, FX80 CorDiax, FX CorAL 80, FX800 CorDiax, and FX CorAL 800. The reduction ratios (RR) of urea, creatinine, ß2-microglobulin, myoglobin, kappa-free immunoglobulin light chains (κFLC), prolactin, α1-microglobulin, α1-acid glycoprotein, lambda immunoglobulin light chains (λFLC), and albumin were compared intra-individually. Dialysate albumin loss was also measured. RESULTS All treatments were well tolerated. The mean amount of replacement fluid ranged from 31 to 34 L. Comparison of dialysis treatments showed no differences between small molecules and even up to those the size of β2-microglobulins. Little differences were found between myoglobin, κFLC, prolactin, α1-microglobulin, and λFLC RRs, and only FX80 CorDiax was slightly superior to the others. Mean dialysate albumin losses were similar, with less than 2.5 g lost in each dialyzer. The FX80 CorDiax showed slightly higher global removal scores than the other dialyzers evaluated, except for FX CorAL 800. CONCLUSION The new generation helixone dialyzers series has been updated to minimise the risk of adverse reactions, while maintaining the effectiveness and albumin loss achieved by the previous most advanced helixone generation.
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Affiliation(s)
- Francisco Maduell
- Servicio de Nefrología y Trasplante Renal, Hospital Clínic, Barcelona, Spain.
| | - José Jesús Broseta
- Servicio de Nefrología y Trasplante Renal, Hospital Clínic, Barcelona, Spain
| | | | - Lida María Rodas
- Servicio de Nefrología y Trasplante Renal, Hospital Clínic, Barcelona, Spain
| | - Miquel Gómez
- Servicio de Nefrología y Trasplante Renal, Hospital Clínic, Barcelona, Spain
| | - Marta Arias-Guillén
- Servicio de Nefrología y Trasplante Renal, Hospital Clínic, Barcelona, Spain
| | - Néstor Fontseré
- Servicio de Nefrología y Trasplante Renal, Hospital Clínic, Barcelona, Spain
| | - Manel Vera
- Servicio de Nefrología y Trasplante Renal, Hospital Clínic, Barcelona, Spain
| | | | - Nayra Rico
- Servicio de Bioquímica, Hospital Clínic, Barcelona, Spain
| | - Rosa Ramos
- Servicio de Nefrología y Trasplante Renal, Hospital Clínic, Barcelona, Spain
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Simple Detection and Culture of Circulating Tumor Cells from Colorectal Cancer Patients Using Poly(2-Methoxyethyl Acrylate)-Coated Plates. Int J Mol Sci 2023; 24:ijms24043949. [PMID: 36835361 PMCID: PMC9959032 DOI: 10.3390/ijms24043949] [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: 12/31/2022] [Revised: 01/15/2023] [Accepted: 01/23/2023] [Indexed: 02/18/2023] Open
Abstract
Here we aimed to establish a simple detection method for detecting circulating tumor cells (CTCs) in the blood sample of colorectal cancer (CRC) patients using poly(2-methoxyethyl acrylate) (PMEA)-coated plates. Adhesion test and spike test using CRC cell lines assured efficacy of PMEA coating. A total of 41 patients with pathological stage II-IV CRC were enrolled between January 2018 and September 2022. Blood samples were concentrated by centrifugation by the OncoQuick tube, and then incubated overnight on PMEA-coated chamber slides. The next day, cell culture and immunocytochemistry with anti-EpCAM antibody were performed. Adhesion tests revealed good attachment of CRCs to PMEA-coated plates. Spike tests indicated that ~75% of CRCs from a 10-mL blood sample were recovered on the slides. By cytological examination, CTCs were identified in 18/41 CRC cases (43.9%). In cell cultures, spheroid-like structures or tumor-cell clusters were found in 18/33 tested cases (54.5%). Overall, CTCs and/or growing circulating tumor cells were found in 23/41 CRC cases (56.0%). History of chemotherapy or radiation was significantly negatively correlated with CTC detection (p = 0.02). In summary, we successfully captured CTCs from CRC patients using the unique biomaterial PMEA. Cultured tumor cells will provide important and timely information regarding the molecular basis of CTCs.
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Polymer-solvent interaction and conformational changes at a molecular level: Implication to solvent-assisted deformation and aggregation at the polymer surface. J Colloid Interface Sci 2022; 616:221-233. [DOI: 10.1016/j.jcis.2022.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/01/2022] [Accepted: 02/02/2022] [Indexed: 11/17/2022]
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6
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Mollahosseini A, Abdelrasoul A. Novel Insights in Hemodialysis: Most Recent Theories on the Membrane Hemocompatibility Improvement. BIOMEDICAL ENGINEERING ADVANCES 2022. [DOI: 10.1016/j.bea.2022.100034] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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Abdelrasoul A, Shoker A. Induced hemocompatibility of polyethersulfone (PES) hemodialysis membrane using polyvinylpyrrolidone: Investigation on human serum fibrinogen adsorption and inflammatory biomarkers released. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2021.11.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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8
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Akada K, Yamazoe K, Miyawaki J, Maeda R, Ito K, Harada Y. Hydrogen-Bonded Structure of Water in the Loop of Anchored Polyrotaxane Chain Controlled by Anchoring Density. Front Chem 2021; 9:743255. [PMID: 34765585 PMCID: PMC8577270 DOI: 10.3389/fchem.2021.743255] [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: 07/18/2021] [Accepted: 09/27/2021] [Indexed: 11/28/2022] Open
Abstract
Hydrogen-bonded network of water surrounding polymers is expected to be one of the most relevant factors affecting biocompatibility, while the specific hydrogen-bonded structure of water responsible for biocompatibility is still under debate. Here we study the hydrogen-bonded structure of water in a loop-shaped poly(ethylene glycol) chain in a polyrotaxane using synchrotron soft X-ray emission spectroscopy. By changing the density of anchoring molecules, hydrogen-bonded structure of water confined in the poly(ethylene glycol) loop was identified. The XES profile of the confined water indicates the absence of the low energy lone-pair peak, probably because the limited space of the polymer loop entropically inhibits the formation of tetrahedrally coordinated water. The volume of the confined water can be changed by the anchoring density, which implies the ability to control the biocompatibility of loop-shaped polymers.
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Affiliation(s)
- Keishi Akada
- Institute for Solid State Physics (ISSP), The University of Tokyo, Chiba, Japan
| | - Kosuke Yamazoe
- Institute for Solid State Physics (ISSP), The University of Tokyo, Chiba, Japan
| | - Jun Miyawaki
- Institute for Solid State Physics (ISSP), The University of Tokyo, Chiba, Japan.,Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Chiba, Japan
| | - Rina Maeda
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan
| | - Kohzo Ito
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan
| | - Yoshihisa Harada
- Institute for Solid State Physics (ISSP), The University of Tokyo, Chiba, Japan.,Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan.,Synchrotron Radiation Research Organization, The University of Tokyo, Chiba, Japan
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9
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Water-soluble polymer micelles formed from amphiphilic diblock copolymers bearing pendant phosphorylcholine and methoxyethyl groups. Polym J 2021. [DOI: 10.1038/s41428-021-00482-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Deng Y, Song GL, Zheng D, Zhang Y. Fabrication and synergistic antibacterial and antifouling effect of an organic/inorganic hybrid coating embedded with nanocomposite Ag@TA-SiO particles. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.126085] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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11
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Zhong D, Wang Z, Zhou J, Wang Y. Additive-free preparation of hemodialysis membranes from block copolymers of polysulfone and polyethylene glycol. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118690] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Kariya S, Nakatani M, Maruyama T, Ono Y, Ueno Y, Komemushi A, Tanigawa N. Evaluation of the antithrombogenicity of poly-2-methoxyethylacrylate-coated catheters. J Vasc Access 2020; 23:117-122. [PMID: 33356882 DOI: 10.1177/1129729820983175] [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: 11/16/2022] Open
Abstract
BACKGROUND AND OBJECTIVES The blood compatibility of indwelling intravascular catheters is facilitated by the use of antithrombogenic materials. Heparin has typically been used for this purpose; however, since heparin-coated catheters are considered combination products, difficulties meeting the relevant Food and Drug Administration safety recommendations have disrupted commercialization. Other issues include coating durability and the occurrence of heparin-induced thrombocytopenia. Polymer coatings are a potential alternative; however, polymer antithrombogenicity in circulating human blood has yet to be demonstrated. The present study aimed to establish the ex vivo antithrombogenicity of a poly-2-methoxyethylacrylate (PMEA) polymer coating applied to a central venous catheter using an artificial human blood circulation system. METHODS The present study used an artificial human blood circulation system to conduct an ex vivo evaluation of the antithrombogenicity of poly-2-methoxyethylacrylate (PMEA)-coated catheters. Human blood samples obtained from volunteer donors were loaded into a circulation system fitted with either a PMEA-coated or uncoated catheter. After 3-h, the catheter was removed and examined using scanning electron microscopy. Protein adsorption on the catheter surface was investigated by shredding the catheter that had contacted the blood inside the circulation system and immersing the pieces in 1 mL of 0.5 N NaOH for 2 days. The amount of protein in the 0.5 N NaOH was determined according to the Lowry method. RESULTS Adherent fibrin, which forms a sheath on the catheter surface, was observed on uncoated, but not PMEA-coated catheters. Furthermore, the amount of protein adsorption was significantly less with PMEA-coated than uncoated catheters (p = 0.043). CONCLUSIONS The present findings demonstrated the antithrombogenicity of PMEA-coated catheters in circulating human blood.
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Affiliation(s)
- Shuji Kariya
- Department of Radiology, Kansai Medical University, Hirakata, Osaka, Japan
| | - Miyuki Nakatani
- Department of Radiology, Kansai Medical University, Hirakata, Osaka, Japan
| | - Takuji Maruyama
- Department of Radiology, Kansai Medical University, Hirakata, Osaka, Japan
| | - Yasuyuki Ono
- Department of Radiology, Kansai Medical University, Hirakata, Osaka, Japan
| | - Yutaka Ueno
- Department of Radiology, Kansai Medical University, Hirakata, Osaka, Japan
| | - Atsushi Komemushi
- Department of Radiology, Kansai Medical University, Hirakata, Osaka, Japan
| | - Noboru Tanigawa
- Department of Radiology, Kansai Medical University, Hirakata, Osaka, Japan
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Kurmaz SV, Fadeeva NV, Ignat’ev VM, Kurmaz VA, Kurochkin SA, Emel’yanova NS. Structure and State of Water in Branched N-Vinylpyrrolidone Copolymers as Carriers of a Hydrophilic Biologically Active Compound. Molecules 2020; 25:molecules25246015. [PMID: 33353192 PMCID: PMC7765915 DOI: 10.3390/molecules25246015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/11/2020] [Accepted: 12/17/2020] [Indexed: 11/18/2022] Open
Abstract
Hydrated copolymers of N-vinylpyrrolidone (VP) with triethylene glycol dimethacrylate as a promising platform for biologically active compounds (BAC) were investigated by different physical chemical methods (dynamic light scattering, infrared spectroscopy, thermal gravimetric analysis, and differential scanning calorimetry) and the quantum chemical modeling of water coordination by the copolymers in a solution. According to the quantum chemical simulation, one to two water molecules can coordinate on one O-atom of the lactam ring of VP units in the copolymer. Besides the usual terminal coordination, the water molecule can form bridges to bind two adjacent C=O groups of the lactam rings of VP units. In addition to the first hydration shell, the formation of a second one is also possible due to the chain addition of water molecules, and its structure depends on a mutual orientation of C=O groups. We showed that N,N-dimethylbiguanidine hydrochloride (metformin) as a frontline drug for the treatment of type 2 diabetes mellitus can be associated in aqueous solutions with free and hydrated C=O groups of the lactam rings of VP units in studied copolymers. Based on the characteristics of the H-bonds, we believe that the level of the copolymer hydration does not affect the behavior and biological activity of this drug, but the binding of metformin with the amphiphilic copolymer will delight in the penetration of a hydrophilic drug across a cell membrane to increase its bioavailability.
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Affiliation(s)
- Svetlana V. Kurmaz
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Prosp. Akad. Semenova 1, 142432 Chernogolovka, Russia; (N.V.F.); (V.M.I.); (V.A.K.); (S.A.K.); (N.S.E.)
- Correspondence: ; Tel.: +7-496-522-10-89
| | - Natalia V. Fadeeva
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Prosp. Akad. Semenova 1, 142432 Chernogolovka, Russia; (N.V.F.); (V.M.I.); (V.A.K.); (S.A.K.); (N.S.E.)
| | - Vladislav M. Ignat’ev
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Prosp. Akad. Semenova 1, 142432 Chernogolovka, Russia; (N.V.F.); (V.M.I.); (V.A.K.); (S.A.K.); (N.S.E.)
- Department of Fundamental Physical and Chemical Engineering, M.V. Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia
| | - Vladimir A. Kurmaz
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Prosp. Akad. Semenova 1, 142432 Chernogolovka, Russia; (N.V.F.); (V.M.I.); (V.A.K.); (S.A.K.); (N.S.E.)
| | - Sergei A. Kurochkin
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Prosp. Akad. Semenova 1, 142432 Chernogolovka, Russia; (N.V.F.); (V.M.I.); (V.A.K.); (S.A.K.); (N.S.E.)
- Faculty of Fundamental Sciences, Bauman Moscow State Technical University, Baumanskaya 2nd 5, 105005 Moscow, Russia
| | - Nina S. Emel’yanova
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Prosp. Akad. Semenova 1, 142432 Chernogolovka, Russia; (N.V.F.); (V.M.I.); (V.A.K.); (S.A.K.); (N.S.E.)
- Department of Fundamental Physical and Chemical Engineering, M.V. Lomonosov Moscow State University, Leninskie Gory 1, 119991 Moscow, Russia
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Tanaka M, Morita S, Hayashi T. Role of interfacial water in determining the interactions of proteins and cells with hydrated materials. Colloids Surf B Biointerfaces 2020; 198:111449. [PMID: 33310639 DOI: 10.1016/j.colsurfb.2020.111449] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/09/2020] [Accepted: 11/01/2020] [Indexed: 01/27/2023]
Abstract
Water molecules play a crucial role in biointerfacial interactions, including protein adsorption and desorption. To understand the role of water in the interaction of proteins and cells at biological interfaces, it is important to compare particular states of hydration water with various physicochemical properties of hydrated biomaterials. In this review, we discuss the fundamental concepts for determining the interactions of proteins and cells with hydrated materials along with selected examples corresponding to our recent studies, including poly(2-methoxyethyl acrylate) (PMEA), PMEA derivatives, and other biomaterials. The states of water were analyzed by differential scanning calorimetry, in situ attenuated total reflection infrared spectroscopy, and surface force measurements. We found that intermediate water which is loosely bound to a biomaterial, is a useful indicator of the bioinertness of material surfaces. This finding on intermediate water provides novel insights and helps develop novel experimental models for understanding protein adsorption in a wide range of materials, such as those used in biomedical applications.
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Affiliation(s)
- Masaru Tanaka
- Institute for Materials Chemistry and Engineering, Kyushu University, CE41 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
| | - Shigeaki Morita
- Department of Engineering Science, Osaka Electro-Communication University, 18-8 Hatsucho, Neyagawa, 572-8530, Japan
| | - Tomohiro Hayashi
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8502, Japan; JST-PRESTO, 4-1-8 Hon-cho, Kawaguchi, Saitama, 332-0012, Japan
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15
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Oda Y, Inutsuka M, Awane R, Totani M, Yamada NL, Haraguchi M, Ozawa M, Matsuno H, Tanaka K. A Dynamic Interface Based on Segregation of an Amphiphilic Hyperbranched Polymer Containing Fluoroalkyl and Oligo(ethylene oxide) Moieties. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02064] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yukari Oda
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
- Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Manabu Inutsuka
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
| | - Ryo Awane
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
| | - Masayasu Totani
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
| | - Norifumi L. Yamada
- Neutron Science Division, Institute of Materials Structure Science, High Energy Acceleration Research Organization, Ibaraki 319-1106, Japan
| | - Masayuki Haraguchi
- Materials Research Laboratories, Nissan Chemical Corporation, Chiba 274-0052, Japan
| | - Masaaki Ozawa
- Materials Research Laboratories, Nissan Chemical Corporation, Chiba 274-0052, Japan
| | - Hisao Matsuno
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
- Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395, Japan
| | - Keiji Tanaka
- Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan
- Center for Polymer Interface and Molecular Adhesion Science, Kyushu University, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395, Japan
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Tanaka M, Kobayashi S, Murakami D, Aratsu F, Kashiwazaki A, Hoshiba T, Fukushima K. Design of Polymeric Biomaterials: The “Intermediate Water Concept”. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190274] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Masaru Tanaka
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shingo Kobayashi
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Daiki Murakami
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Fumihiro Aratsu
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Aki Kashiwazaki
- Soft Materials Chemistry, Institute for Materials Chemistry and Engineering, Kyushu University, Build. CE41, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takashi Hoshiba
- Frontier Center for Organic Materials, Yamagata University, 4-3-16 Yonezawa, Yamagata 992-8510, Japan
| | - Kazuki Fukushima
- Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Yonezawa, Yamagata 992-8510, Japan
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Endoh MK, Morimitsu Y, Salatto D, Huang Z, Sen M, Li W, Meng Y, Thanassi DG, Carrillo JMY, Sumpter BG, Kawaguchi D, Tanaka K, Koga T. Protein Resistance Driven by Polymer Nanoarchitecture. ACS Macro Lett 2019; 8:1153-1159. [PMID: 35619442 DOI: 10.1021/acsmacrolett.9b00518] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We report that the nanometer-scale architecture of polymer chains plays a crucial role in its protein resistant property over surface chemistry. Protein-repellent (noncharged), few nanometer thick polymer layers were designed with homopolymer chains physisorbed on solids. We evaluated the antifouling property of the hydrophilic or hydrophobic adsorbed homopolymer chains against bovine serum albumin in water. Molecular dynamics simulations along with sum frequency generation spectroscopy data revealed the self-organized nanoarchitecture of the adsorbed chains composed of inner nematic-like ordered segments and outer brush-like segments across homopolymer systems with different interactions among a polymer, substrate, and interfacial water. We propose that this structure acts as a dual barrier against protein adsorption.
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Affiliation(s)
- Maya K. Endoh
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
| | - Yuma Morimitsu
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Daniel Salatto
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
| | - Zhixing Huang
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
| | - Mani Sen
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
| | - Weiyi Li
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
| | - Yizhi Meng
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
| | - David G. Thanassi
- Department of Molecular Genetics & Microbiology and Center for Infectious Diseases, Stony Brook University, Stony Brook, New York 11794-5222, United States
| | - Jan-Michael Y. Carrillo
- Center for Nanophase Materials Sciences and Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Bobby G. Sumpter
- Center for Nanophase Materials Sciences and Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Daisuke Kawaguchi
- Education Center for Global Leaders in Molecular Systems for Devices, Kyushu University, Fukuoka 819-0395, Japan
| | - Keiji Tanaka
- Department of Applied Chemistry, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan
| | - Tadanori Koga
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794-2275, United States
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
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18
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Elgersma SV, Ha M, Yang JLJ, Michaelis VK, Unsworth LD. Charge and Peptide Concentration as Determinants of the Hydrogel Internal Aqueous Environment. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E832. [PMID: 30870997 PMCID: PMC6427708 DOI: 10.3390/ma12050832] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/06/2019] [Accepted: 03/08/2019] [Indexed: 11/20/2022]
Abstract
Self-assembling peptides are a promising class of biomaterials with desirable biocompatibility and versatility. In particular, the oligopeptide (RADA)₄, consisting of arginine (R), alanine (A), and aspartic acid (D), self-assembles into nanofibers that develop into a three-dimensional hydrogel of up to 99.5% (w/v) water; yet, the organization of water within the hydrogel matrix is poorly understood. Importantly, peptide concentration and polarity are hypothesized to control the internal water structure. Using variable temperature deuterium solid-state nuclear magnetic resonance (²H NMR) spectroscopy, we measured the amount of bound water in (RADA)₄-based hydrogels, quantified as the non-frozen water content. To investigate how peptide polarity affects water structure, five lysine (K) moieties were appended to (RADA)₄ to generate (RADA)₄K₅. Hydrogels at 1 and 5% total peptide concentration were prepared from a 75:25 (w/w) blend of (RADA)₄:(RADA)₄K₅ and similarly analyzed by ²H NMR. Interestingly, at 5% peptide concentration, there was lower mobile water content in the lysinated versus the pristine (RADA)₄ hydrogel. Regardless of the presence of lysine, the 5% peptide concentration had higher non-frozen water content at temperatures as low as 217 ± 1.0 K, suggesting that bound water increases with peptide concentration. The bound water, though non-frozen, may be strongly bound to the charged lysine moiety to appear as immobilized water. Further understanding of the factors controlling water structure within hydrogels is important for tuning the transport properties of bioactive solutes in the hydrogel matrix when designing for biomedical applications.
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Affiliation(s)
- Scott V Elgersma
- Department of Chemical and Materials Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
- National Research Council, National Institute for Nanotechnology, Edmonton, AB T6G 2M9, Canada.
| | - Michelle Ha
- Department of Chemistry, Faculty of Science, University of Alberta, Edmonton, AB T6G 2G2, Canada.
| | - Jung-Lynn Jonathan Yang
- Department of Chemical and Materials Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
- National Research Council, National Institute for Nanotechnology, Edmonton, AB T6G 2M9, Canada.
| | - Vladimir K Michaelis
- Department of Chemistry, Faculty of Science, University of Alberta, Edmonton, AB T6G 2G2, Canada.
| | - Larry D Unsworth
- Department of Chemical and Materials Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
- National Research Council, National Institute for Nanotechnology, Edmonton, AB T6G 2M9, Canada.
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19
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Elucidating the relationship between states of water and ion transport properties in hydrated polymers. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.12.059] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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20
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Alghamdi AA, Alsolami A, Saeed WS, Al-Odayni ABM, Semlali A, Aouak T. Miscibility of poly(acrylic acid)/poly(methyl vinyl ketone) blend and in vitro application as drug carrier system. Des Monomers Polym 2018; 21:145-162. [PMID: 30275803 PMCID: PMC6161612 DOI: 10.1080/15685551.2018.1521563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 08/31/2018] [Indexed: 11/04/2022] Open
Abstract
A series of poly(acrylic acid)/poly(methyl vinyl ketone) (PAA/PMVK) blends with different compositions were prepared by the solvent casting method. The miscibility of this pair of polymers was investigated by differential scanning calorimetry(DSC), Fourier transform infra-red (FTIR) and X-Ray diffraction (XRD) techniques. An in-vitro cytotoxicity test of the drug-carrier system via MTT (3-(4,5-demethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay revealed no significant cytotoxic effects at concentrations up to 100 µg· ml−1. The STX/PAA-50 drug carrier systems were also prepared by solvent casting of solutions containing the sulfamethoxazole (STX) used as drug model and PAA/PMVK blend in N.N-dimethylformamide then crosslinked with acidified ethylene glycol. The release dynamic of STX from the prepared hydrogels was investigated in which the diffusion through the polymer matrix, the enhancement of the water solubility of STX, the influence of the initial drug concentration, the pH of the medium, and the effect of the degree of swelling of the polymer matrix on the release dynamic was evaluated. According to the total gastrointestinal transit time estimated by Belzer, the estimate distribution of STX released in the different organs indicated that the performance is obtained with the drug – carrier-system containing equal ratios of polymer and 10 wt% of STX (STX-10/PAA-50).
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Affiliation(s)
| | - Abdulellah Alsolami
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Waseem Sharaf Saeed
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - Abdelhabib Semlali
- Biochemistry department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Taieb Aouak
- Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia
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21
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Santoro R, Venkateswaran S, Amadeo F, Zhang R, Brioschi M, Callanan A, Agrifoglio M, Banfi C, Bradley M, Pesce M. Acrylate-based materials for heart valve scaffold engineering. Biomater Sci 2018; 6:154-167. [PMID: 29148548 DOI: 10.1039/c7bm00854f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Calcific aortic valve disease (CAVD) is the most frequent cardiac valve pathology. Its standard treatment consists of surgical replacement either with mechanical (metal made) or biological (animal tissue made) valve prostheses, both of which have glaring deficiencies. In the search for novel materials to manufacture artificial valve tissue, we have conducted a high-throughput screening with subsequent up-scaling to identify non-degradable polymer substrates that promote valve interstitial cells (VICs) adherence/growth and, at the same time, prevent their evolution toward a pro-calcific phenotype. Here, we provide evidence that one of the two identified 'hit' polymers, poly(methoxyethylmethacrylate-co-diethylaminoethylmethacrylate), provided robust VICs adhesion and maintained the healthy VICs phenotype without inducing pro-osteogenic differentiation. This ability was also maintained when the polymer was used to coat a non-woven poly-caprolactone (PCL) scaffold using a novel solvent coating procedure, followed by bioreactor-assisted VICs seeding. Since we observed that VICs had an increased secretion of the elastin-maturing component MFAP4 in addition to other valve-specific extracellular matrix components, we conclude that valve implants constructed with this polyacrylate will drive the biological response of human valve-specific cells.
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Affiliation(s)
- Rosaria Santoro
- Unità di Ingegneria Tissutale Cardiovascolare, Centro Cardiologico Monzino, IRCCS, Milan, Italy.
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22
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Yanagi K, Yamada NL, Kato K, Ito K, Yokoyama H. Polyrotaxane Brushes Dynamically Formed at a Water/Elastomer Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:5297-5302. [PMID: 29652500 DOI: 10.1021/acs.langmuir.8b00649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dense polymer brushes with closely packed rotaxane structures were formed at the interface of water and a styrene-butadiene elastomer by spontaneous segregation of an amphiphilic polyrotaxane (PR), a mechanically interlocked polymer consisting of hydrophobic polybutadiene threading through multiple hydrophilic γ-cyclodextrin (γ-CD) derivatives. Segregation of PR at the water/elastomer interface was suggested by X-ray photoelectron spectroscopy. The polymer brush structure at the water interface was investigated using neutron reflectometry. Brush structures were found to depend on the number of CDs on the PRs; the PR with a small number of CDs formed a thinner and homogeneous brush, whereas the PR with a higher number of CDs formed a thicker and less-ordered brush. These PR-brushes showed protein repulsion, resulting from the surface-hydrated brush layer preventing direct contact of proteins.
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Affiliation(s)
- Kanta Yanagi
- Graduate School of Frontier Sciences , The University of Tokyo , Chiba 277-8561 , Japan
| | - Norifumi L Yamada
- High Energy Accelerator Research Organization , Ibaraki 319-1108 , Japan
| | - Kazuaki Kato
- Graduate School of Frontier Sciences , The University of Tokyo , Chiba 277-8561 , Japan
| | - Kohzo Ito
- Graduate School of Frontier Sciences , The University of Tokyo , Chiba 277-8561 , Japan
| | - Hideaki Yokoyama
- Graduate School of Frontier Sciences , The University of Tokyo , Chiba 277-8561 , Japan
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23
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Ikeda Y, Nagasaki Y. Antioxidative biointerface: biocompatible materials scavenging reactive oxygen species. ACTA ACUST UNITED AC 2018; 13:044103. [PMID: 29546843 DOI: 10.1088/1748-605x/aab720] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Oxidative stress caused by reactive oxygen species (ROS) occurs as events in which living tissues contact certain materials. These events include cell cultures and implantation of materials. Because of the high reactivity of ROS, they damage cells by oxidizing DNA, lipids, and proteins. Conversely, ROS also act as signaling molecules regulating cellular morphology. In particular, mitochondrial ROS are involved in the regulation of cellular physiology, including differentiation, autophagy, metabolic adaptation, apoptosis, and immunity. The balance between generation and elimination of ROS is essential for signaling pathways and proper cell function, and redox imbalance leads to cellular dysfunction and disturbs cellular homeostasis. To reduce oxidative stress, versatile antioxidants, including natural compounds, have been used; however, their poor bioavailability and pro-oxidant effects have limited the versatility of these antioxidants. Recent developments of antioxidative biointerfaces may represent a potent solution to this issue. Designed biointerfaces composed of polymer antioxidants eliminate excessive ROS at the interface between living tissues and materials, and do not disturb regulated redox balance inside cells, thus eliminating unexpected cell responses, such as inflammation and dysfunction.
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Affiliation(s)
- Yutaka Ikeda
- Department of Materials Sciences, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8573, Japan
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24
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Kureha T, Suzuki D. Nanocomposite Microgels for the Selective Separation of Halogen Compounds from Aqueous Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:837-846. [PMID: 28618227 DOI: 10.1021/acs.langmuir.7b01485] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Nanocomposite microgels that selectively adsorb and release halogen compounds were developed. These nanocomposite microgels consist of poly(2-methoxyethyl acrylate) (pMEA) and a poly(oligo ethylene glycol methacrylate) hydrogel matrix. Therefore, the methoxy groups of the former are crucial for the halogen bonding, while the presence of the latter adds colloidal stability and allows controlled uptake/release of the halogen compounds. Such nanocomposite microgels may not only be used as dispersed carriers, but also in films and columnar formations. Thus, these unprecedented polymer/polymer nanocomposite microgels resolve a variety of problems associated with, e.g., the removal of halogen compounds from wastewater, or with the delivery of halogen-containing drugs.
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Affiliation(s)
- Takuma Kureha
- Graduate School of Textile Science & Technology, Shinshu University , 3-15-1 Tokida, Ueda 386-8567, Japan
| | - Daisuke Suzuki
- Graduate School of Textile Science & Technology, Shinshu University , 3-15-1 Tokida, Ueda 386-8567, Japan
- Division of Smart Textiles, Institute for Fiber Engineering, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University , 3-15-1 Tokida, Ueda 386-8567, Japan
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25
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Itagaki N, Oda Y, Hirata T, Nguyen HK, Kawaguchi D, Matsuno H, Tanaka K. Surface Characterization and Platelet Adhesion on Thin Hydrogel Films of Poly(vinyl ether). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14332-14339. [PMID: 29211485 DOI: 10.1021/acs.langmuir.7b03427] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Poly(vinyl ether), with short oxyethylene side chains which possess a simple and relatively polar structure, should be a unique candidate for a bioinert material thanks to its solubility in water. On the basis of living cationic copolymerization and subsequent ultraviolet light irradiation, thin films of poly(2-methoxyethyl vinyl ether) with different cross-linking densities were prepared on solid substrates. The films were thickened in water, and the extent was dependent on the cross-linking density. Although the surface chemistry and aggregation states were almost identical to one another, the stiffness, or the softness, of the outermost region in the film was strongly dependent on the cross-linking density. That is, the interface between polymer and water became thicker, or more diffused, with decreasing cross-linking density. The blood compatibility based on the platelet adhesion on to the hydrogel films was better for a more diffused interface.
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Affiliation(s)
- Nozomi Itagaki
- Department of Applied Chemistry, ‡Education Center for Global Leaders in Molecular Systems for Devices, and §International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , Fukuoka 819-0395, Japan
| | - Yukari Oda
- Department of Applied Chemistry, ‡Education Center for Global Leaders in Molecular Systems for Devices, and §International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , Fukuoka 819-0395, Japan
| | - Toyoaki Hirata
- Department of Applied Chemistry, ‡Education Center for Global Leaders in Molecular Systems for Devices, and §International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , Fukuoka 819-0395, Japan
| | - Hung Kim Nguyen
- Department of Applied Chemistry, ‡Education Center for Global Leaders in Molecular Systems for Devices, and §International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , Fukuoka 819-0395, Japan
| | - Daisuke Kawaguchi
- Department of Applied Chemistry, ‡Education Center for Global Leaders in Molecular Systems for Devices, and §International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , Fukuoka 819-0395, Japan
| | - Hisao Matsuno
- Department of Applied Chemistry, ‡Education Center for Global Leaders in Molecular Systems for Devices, and §International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , Fukuoka 819-0395, Japan
| | - Keiji Tanaka
- Department of Applied Chemistry, ‡Education Center for Global Leaders in Molecular Systems for Devices, and §International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , Fukuoka 819-0395, Japan
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26
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Hemodialysis membrane coated with a polymer having a hydrophilic blood-contacting layer can enhance diffusional performance. Int J Artif Organs 2017; 40:665-669. [PMID: 28777393 PMCID: PMC6159844 DOI: 10.5301/ijao.5000631] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2017] [Indexed: 12/02/2022]
Abstract
Purpose Currently, the foreign surfaces of various extracorporeal circulation devices are coated with a biocompatible polymer coating agent (BPA), which creates a hydrophilic blood-contacting layer to reduce thrombogenicity, while the membranes in hemodialyzers are not. We aimed to clarify other side effects of BPA-coated membranes by examining the diffusion performance in in vitro experiments. Methods We used a polyethersulfone membrane (sieving coefficient of albumin is ≤0.01) coated with BPA product, SEC-1™ (Toyobo), in a hemodialyzer. To estimate the diffusion rates of a wide range of molecules, 2 L of saline containing vancomycin, lysozyme, and albumin were recirculated in the circuit configured with a hemodialyzer, and dialyzed continuously using water. The concentrations of sodium, vancomycin, lysozyme, and albumin were measured every 5 minutes for 30 minutes and compared in experiments with BPA-coated (n = 4) and BPA-noncoated (n = 4) membranes. Results The removal rates of sodium and vancomycin after 5 minutes of dialysis (n = 24) were significantly higher in BPA-coated than noncoated membranes, while those of lysozyme and albumin were not significantly different. The removal rates of sodium and vancomycin after 30 minutes of dialysis (n = 4) were significantly higher, and those of lysozyme were significantly lower in BPA-coated than noncoated membranes, while those of albumin were not significantly different. Conclusions The preliminary study suggests that BPA-coated membranes enhanced the diffusion rate of molecules with low and middle molecular weight without affecting the sieving coefficient of albumin. Thus, BPA coating can enhance the dialysis performance of membranes.
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Kameta N, Ding W, Dong J. Soft Nanotubes Derivatized with Short PEG Chains for Thermally Controllable Extraction and Separation of Peptides. ACS OMEGA 2017; 2:6143-6150. [PMID: 30023764 PMCID: PMC6044993 DOI: 10.1021/acsomega.7b00838] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 09/13/2017] [Indexed: 06/08/2023]
Abstract
By means of a two-step self-assembly process involving three components, including short poly(ethylene glycol) (PEG) chains, we produced two different types of molecular monolayer nanotubes: nanotubes densely functionalized with PEG chains on the outer surface and nanotubes densely functionalized with PEG chains in the nanochannel. Turbidity measurements and fluorescence spectroscopy with an environmentally responsive probe suggested that the PEG chains underwent dehydration when the nanotubes were heated above 44-57 °C and rehydration when they were cooled back to 25 °C. Dehydration of the exterior or interior PEG chains rendered them hydrophobic and thus able to effectively extract hydrophobic amino acids from the bulk solution. Rehydration of the PEG chains restored their hydrophilicity, thus allowing the extracted amino acids to be squeezed out into the bulk solutions. The nanotubes with exterior PEG chains exhibited selectivity for all of the hydrophobic amino acids, whereas the interior PEG chains were selective for hydrophobic amino acids with an aliphatic side chain over hydrophobic amino acids with an aromatic side chain. The higher selectivity of the latter system is attributable that the extraction and back-extraction processes involve encapsulation and transportation of the amino acids in the nanotube channel. As the result, the latter system was useful for separation of peptides that differed by only a single amino acid, whereas the former system showed no such separation ability.
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Affiliation(s)
- Naohiro Kameta
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Wuxiao Ding
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Jiuchao Dong
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science
and Technology (AIST), Tsukuba Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
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28
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Water-immiscible bioinert coatings and film formation from aqueous dispersions of poly(2-methoxyethyl acrylate) microspheres. Colloids Surf B Biointerfaces 2017; 155:166-172. [DOI: 10.1016/j.colsurfb.2017.04.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/31/2017] [Accepted: 04/01/2017] [Indexed: 11/22/2022]
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Fukuda C, Yahata C, Kinoshita T, Watanabe T, Tsukamoto H, Mochizuki A. Effect of end segment on physicochemical properties and platelet compatibility of poly(propylene glycol)-initiated poly(methyl methacrylate). JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:1572-1587. [PMID: 28548908 DOI: 10.1080/09205063.2017.1335938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
It is well known that polyether-based copolymers have good blood compatibility, although many mechanisms have been proposed to explain their favorable performance. Our objective in carrying out the present study was to obtain a better understanding of the effect of the (poly)ether segment on blood compatibility. Therefore, we synthesized poly(propylene glycol) (PPG)-based initiators for atom transfer polymerization, where the number of propylene glycol (PG) units in the PPG (Pn(PG) was varied from 1 to 94. Methyl methacrylate (MMA) was polymerized using the initiators, resulting in the formation of polyMMAs with a PG-based ether part at the polymer terminal. We mainly investigated the effects of Pn(PG) on the surface properties and platelet compatibility of the PPG-polyMMA. X-ray photoelectron spectroscopy and surface contact angle (CA) analysis revealed the exposure of the PG units at the surface of the polymer. The platelet compatibility of the polymers was improved compared with a commercial polyMMA, even when Pn(PG) = 1. These results suggest that PG units have an important influence on favorable blood compatibility, regardless of the Pn(PG) value. We also investigated protein adsorption behavior in terms of the amount and deformation of fibrinogen adsorbed on the polymer surface.
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Affiliation(s)
- Chihiro Fukuda
- a Department of Bio-Medical Engineering, School of Engineering , Tokai University , Isehara , Japan
| | - Chie Yahata
- a Department of Bio-Medical Engineering, School of Engineering , Tokai University , Isehara , Japan
| | - Takuya Kinoshita
- a Department of Bio-Medical Engineering, School of Engineering , Tokai University , Isehara , Japan
| | - Takafumi Watanabe
- a Department of Bio-Medical Engineering, School of Engineering , Tokai University , Isehara , Japan
| | - Hideo Tsukamoto
- a Department of Bio-Medical Engineering, School of Engineering , Tokai University , Isehara , Japan
| | - Akira Mochizuki
- a Department of Bio-Medical Engineering, School of Engineering , Tokai University , Isehara , Japan
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Mochizuki A, Miwa Y, Miyoshi R, Namiki T. Relationship between water structure and properties of poly(methyl methacrylate-b-2-hydroxyethyl methacrylate) by solid-state NMR. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:1199-1214. [PMID: 28325108 DOI: 10.1080/09205063.2017.1310647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
We previously reported that the platelet compatibility of methyl methacrylate (MMA)-2-hydroxyethyl methacrylate (HEMA) diblock copolymers is related to the characteristic water structure in the copolymer, as the copolymer has an excess amount of nonfreezing water when compared with that estimated from the amounts of water in HEMA and MMA homopolymers. Thus, in this study, the relationship between water structure and polymer structure, including the heterogeneity and mobility of the copolymer, was investigated using differential scanning calorimetry (DSC) and nuclear magnetic resonance (NMR) spectroscopy. The prepared copolymers were classified into two groups: copolymers with a short, constant polyMMA segment length (Mn = ~2900) and copolymers with a constant polyHEMA segment length (Mn = ~9500), whereas the lengths of the counter segments varied. DSC analysis showed that when the polyMMA and polyHEMA segment lengths are similar, the amount of nonfreezing water increases, regardless of the total molecular weight of the copolymer. NMR analysis showed that heterogeneity of the copolymer is enhanced and the mobility of the copolymer decreases when the segment lengths are similar. These findings suggested that the excess amount of nonfreezing water is formed when the properties of water near the HEMA unit change from freezing to nonfreezing owing to interactions with the MMA unit. In addition, it is suggested that the heterogeneity of the copolymer structure or the mobility of the polymer are involved in the generation of excess nonfreezing water.
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Affiliation(s)
- Akira Mochizuki
- a Department of Bio-Medical Engineering, School of Engineering , Tokai University , Isehara , Japan
| | - Yuko Miwa
- b Toray Research Center , Otsu , Japan
| | | | - Takahiro Namiki
- a Department of Bio-Medical Engineering, School of Engineering , Tokai University , Isehara , Japan
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31
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Hatakeyama T, Hatakeyama H. Heat capacity and nuclear magnetic relaxation times of non-freezing water restrained by polysaccharides, revisited. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:1215-1230. [DOI: 10.1080/09205063.2017.1291551] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Hyoe Hatakeyama
- Lignocel Research Co. Ltd., Fukui, Japan
- Fukui University of Technology, Fukui, Japan
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Beckner W, He Y, Pfaendtner J. Chain Flexibility in Self-Assembled Monolayers Affects Protein Adsorption and Surface Hydration: A Molecular Dynamics Study. J Phys Chem B 2016; 120:10423-10432. [DOI: 10.1021/acs.jpcb.6b05882] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Wesley Beckner
- Department
of Chemical Engineering, University of Washington, Seattle, Washington 98105, United States
| | - Yi He
- College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Jim Pfaendtner
- Department
of Chemical Engineering, University of Washington, Seattle, Washington 98105, United States
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Prospects for Clinical Applications of Polymer-Coated Haemoconcentrator on Extracorporeal Circuit in Cardiopulmonary Bypass Surgeries. Int J Artif Organs 2016; 39:415-420. [DOI: 10.5301/ijao.5000519] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2016] [Indexed: 11/20/2022]
Abstract
Purpose Extracorporeal circulation circuits used in cardiopulmonary bypass surgeries are increasingly being coated with polymer materials to reduce the thrombogenicity of extracorporeal devices. However, a haemoconcentrator, which corrects haematocrit and electrolyte imbalances, is not coated with polymers. In this study, we sought to assess the filtration performance of polymer-coated haemoconcentrators in order to obtain insight into their prospects for use in clinical applications. Methods In vitro experiments were performed to evaluate the water pressure and flow properties of polymer-coated haemoconcentrators by comparing 3 polymer-coated haemoconcentrators with 3 non-coated haemoconcentrators. The cross-sectional surfaces of both types of haemoconcentrators were observed using a scanning electron microscope (SEM). Results The slopes of the regression lines for estimating the filtrated fluid flow as a function of the transmembrane pressure were 6.286 ± 0.320 for polymer-coated haemoconcentrators and 3.712 ± 0.170 for non-coated haemoconcentrators. These slopes were found to be significantly different and indicate that the filtration velocity is enhanced in polymer-coated haemoconcentrators over that in non-coated haemoconcentrators. However, the hollow fibre damage observed by SEM was not shown to contribute to higher filtration flow in the polymer-coated haemoconcentrator. Taking these results into consideration, we hypothesise that a polymer coating makes a foreign surface on a hollow fibre slippery, owing to the hydrophobicity of the polymer, thereby enhancing the velocity of the filtration. Conclusions The results of this preliminary investigation suggest that a polymer coating can enhance the filtration performance of a haemoconcentrator and that polymer-coated haemoconcentrators might be useful in clinical applications.
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Cao Z, Wu M, Zhao Y, Dai L, Zeng R, Tu M, Zhao J. Bioinspired double-positively charged phosphodicholine-chitosan and zwitterionic phosphorylcholine-chitosan conjugates: The associated water structure, biocompatibility and antibacterial action. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.03.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Kameta N, Matsuzawa T, Yaoi K, Masuda M. Short polyethylene glycol chains densely bound to soft nanotube channels for inhibition of protein aggregation. RSC Adv 2016. [DOI: 10.1039/c6ra06793j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Specific thermal dehydration/rehydration of short polyethylene glycol (PEG) chains densely bound to nanotube channels was useful for aggregation suppression and refolding acceleration of proteins.
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Affiliation(s)
- N. Kameta
- Research Institute for Sustainable Chemistry
- Department of Materials and Chemistry
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - T. Matsuzawa
- Bioproduction Research Institute
- Department of Life Science and Biotechnology
- AIST
- Tsukuba
- Japan
| | - K. Yaoi
- Bioproduction Research Institute
- Department of Life Science and Biotechnology
- AIST
- Tsukuba
- Japan
| | - M. Masuda
- Research Institute for Sustainable Chemistry
- Department of Materials and Chemistry
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
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Mochizuki A, Namiki T, Nishimori Y, Ogawa H. Study of the water structure in poly(methyl methacrylate-block-2-hydroxyethyl methacrylate) and its relationship to platelet adhesion on the copolymer surface. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:750-65. [DOI: 10.1080/09205063.2015.1056457] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sato K, Kobayashi S, Kusakari M, Watahiki S, Oikawa M, Hoshiba T, Tanaka M. The Relationship Between Water Structure and Blood Compatibility in Poly(2-methoxyethyl Acrylate) (PMEA) Analogues. Macromol Biosci 2015; 15:1296-303. [DOI: 10.1002/mabi.201500078] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 05/07/2015] [Indexed: 12/29/2022]
Affiliation(s)
- Kazuhiro Sato
- Department of Biochemical Engineering, Graduate School of Science and Engineering; Yamagata University; 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
| | - Shingo Kobayashi
- Department of Biochemical Engineering, Graduate School of Science and Engineering; Yamagata University; 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka Nishi-ku Fukuoka 819-0395 Japan
| | - Miho Kusakari
- Department of Biochemical Engineering, Graduate School of Science and Engineering; Yamagata University; 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
| | - Shogo Watahiki
- Department of Biochemical Engineering, Graduate School of Science and Engineering; Yamagata University; 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
| | - Masahiko Oikawa
- Department of Biochemical Engineering, Graduate School of Science and Engineering; Yamagata University; 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
| | - Takashi Hoshiba
- Department of Biochemical Engineering, Graduate School of Science and Engineering; Yamagata University; 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
- International Center for Materials Nanoarchitectonics (MANA); National Institute for Materials Science; 1-1 Namiki Tsukuba Ibaraki 305-0044
| | - Masaru Tanaka
- Department of Biochemical Engineering, Graduate School of Science and Engineering; Yamagata University; 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka Nishi-ku Fukuoka 819-0395 Japan
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Hirata T, Matsuno H, Kawaguchi D, Hirai T, Yamada NL, Tanaka M, Tanaka K. Effect of local chain dynamics on a bioinert interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:3661-3667. [PMID: 25760401 DOI: 10.1021/acs.langmuir.5b00258] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Although many kinds of synthetic polymers have been investigated to construct blood-compatible materials, only a few have achieved success. To establish molecular designs for blood-compatible polymers, the chain structure and dynamics at the water interface must be understood using solid evidence as the first bench mark. Here we show that polymer dynamics at the water interface impacts on structure of the interfacial water, resulting in a change in protein adsorption and of platelet adhesion. As a particular material, a blend composed of poly(2-methoxyethyl acrylate) (PMEA) and poly(methyl methacrylate) was used. PMEA was segregated to the water interface. While the local conformation of PMEA at the water interface was insensitive to its molecular weight, the local dynamics became faster with decreasing molecular weight, resulting in a disturbance of the network structure of waters at the interface. This leads to the extreme suppression of protein adsorption and platelet adhesion.
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Affiliation(s)
| | | | | | | | - Norifumi L Yamada
- ∥Neutron Science Laboratory, High Energy Accelerator Research Organization, Ibaraki 305-0801, Japan
| | - Masaru Tanaka
- ⊥Department of Biochemical Engineering, Yamagata University, Yamagata 992-8510, Japan
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Tanaka M, Sato K, Kitakami E, Kobayashi S, Hoshiba T, Fukushima K. Design of biocompatible and biodegradable polymers based on intermediate water concept. Polym J 2014. [DOI: 10.1038/pj.2014.129] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Salt effects on the hydration behavior of zwitterionic poly(sulfobetaine methacrylate) aqueous solutions. J Taiwan Inst Chem Eng 2014. [DOI: 10.1016/j.jtice.2014.08.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Sekine Y, Takagi H, Sudo S, Kajiwara Y, Fukazawa H, Ikeda-Fukazawa T. Dependence of structure of polymer side chain on water structure in hydrogels. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.10.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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43
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Adhesion and proliferation of human periodontal ligament cells on poly(2-methoxyethyl acrylate). BIOMED RESEARCH INTERNATIONAL 2014; 2014:102648. [PMID: 25165689 PMCID: PMC4140152 DOI: 10.1155/2014/102648] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 06/29/2014] [Indexed: 01/09/2023]
Abstract
Human periodontal ligament (PDL) cells obtained from extracted teeth are a potential cell source for tissue engineering. We previously reported that poly(2-methoxyethyl acrylate) (PMEA) is highly biocompatible with human blood cells. In this study, we investigated the adhesion, morphology, and proliferation of PDL cells on PMEA and other types of polymers to design an appropriate scaffold for tissue engineering. PDL cells adhered and proliferated on all investigated polymer surfaces except for poly(2-hydroxyethyl methacrylate) and poly[(2-methacryloyloxyethyl phosphorylcholine)-co-(n-butyl methacrylate)]. The initial adhesion of the PDL cells on PMEA was comparable with that on polyethylene terephthalate (PET). In addition, the PDL cells on PMEA spread well and exhibited proliferation behavior similar to that observed on PET. In contrast, platelets hardly adhered to PMEA. PMEA is therefore expected to be an excellent scaffold for tissue engineering and for culturing tissue-derived cells in a blood-rich environment.
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Zhu LJ, Zhu LP, Jiang JH, Yi Z, Zhao YF, Zhu BK, Xu YY. Hydrophilic and anti-fouling polyethersulfone ultrafiltration membranes with poly(2-hydroxyethyl methacrylate) grafted silica nanoparticles as additive. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2013.09.053] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hao N, Wang YB, Zhang SP, Shi SQ, Nakashima K, Gong YK. Surface reconstruction and hemocompatibility improvement of a phosphorylcholine end-capped poly(butylene succinate) coating. J Biomed Mater Res A 2013; 102:2972-81. [DOI: 10.1002/jbm.a.34967] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 09/18/2013] [Indexed: 12/13/2022]
Affiliation(s)
- Ni Hao
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Northwest University; Xi'an Shaanxi China
- College of Chemistry and Materials Science; Northwest University; Xi'an Shaanxi China
| | - Yan-Bing Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Northwest University; Xi'an Shaanxi China
- College of Chemistry and Materials Science; Northwest University; Xi'an Shaanxi China
| | - Shi-Ping Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Northwest University; Xi'an Shaanxi China
- College of Chemistry and Materials Science; Northwest University; Xi'an Shaanxi China
| | - Su-Qing Shi
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Northwest University; Xi'an Shaanxi China
- College of Chemistry and Materials Science; Northwest University; Xi'an Shaanxi China
| | | | - Yong-Kuan Gong
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education; Northwest University; Xi'an Shaanxi China
- College of Chemistry and Materials Science; Northwest University; Xi'an Shaanxi China
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Birch MA, Tanaka M, Kirmizidis G, Yamamoto S, Shimomura M. Microporous “Honeycomb” Films Support Enhanced Bone Formation In Vitro. Tissue Eng Part A 2013; 19:2087-96. [DOI: 10.1089/ten.tea.2012.0729] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Mark A. Birch
- Institute for Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Masaru Tanaka
- Department of Biochemical Engineering, Graduate School of Science and Engineering, Yamagata University, Yonezawa, Japan
| | - George Kirmizidis
- Institute for Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Sadaaki Yamamoto
- Innovation Research Center for Fuel Cells, The University of Electro-Communications, Tokyo, Japan
| | - Masatsugu Shimomura
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Sendai, Japan
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Javakhishvili I, Jankova K, Hvilsted S. Neutral, anionic, cationic, and zwitterionic diblock copolymers featuring poly(2-methoxyethyl acrylate) “hydrophobic” segments. Polym Chem 2013. [DOI: 10.1039/c2py20694c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Shi D, Zhang X, Dong W, Chen M. Synthesis and biocompatibility of phosphoryl polymer and relationship between biocompatibility and water structure. POLYMER SCIENCE SERIES B 2012. [DOI: 10.1134/s156009041206005x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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50
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Gemmei-Ide M, Ohya A, Kitano H. Recrystallization of Water in Non-Water-Soluble (Meth)Acrylate Polymers Is Not Rare and Is Not Devitrification. J Phys Chem B 2012; 116:1850-7. [DOI: 10.1021/jp211473p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Makoto Gemmei-Ide
- Department
of Environmental Applied Chemistry, Graduate
School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Atsushi Ohya
- Department
of Environmental Applied Chemistry, Graduate
School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
| | - Hiromi Kitano
- Department
of Environmental Applied Chemistry, Graduate
School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
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