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Tunca N, Maral M, Yildiz E, Sengel SB, Erdem A. Synthesis and characterization of polysaccharide-cryogel and its application to the electrochemical detection of DNA. Mikrochim Acta 2024; 191:499. [PMID: 39088080 PMCID: PMC11294392 DOI: 10.1007/s00604-024-06550-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 07/06/2024] [Indexed: 08/02/2024]
Abstract
The main goal of our study is to demonstrate the applicability of the PPy-cryogel-modified electrodes for electrochemical detection of DNA. First, a polysaccharide-based cryogel was synthesized. This cryogel was then used as a template for chemical polypyrrole synthesis. This prepared polysaccharide-based conductive cryogel was used for electrochemical biosensing on DNA. Carrageenan (CG) and sodium alginate (SA) polysaccharides, which stand out as biocompatible materials, were used in cryogel synthesis. Electron transfer was accelerated by polypyrrole (PPy) synthesized in cryogel networks. A 2B pencil graphite electrode with a diameter of 2.00 mm was used as a working electrode. The prepared polysaccharide solution was dropped onto a working electrode as a support material to improve the immobilization capacity of biomolecules and frozen to complete the cryogelation step. PPy synthesis was performed on the electrodes whose cryogelation process was completed. In addition, the structures of cryogels synthesized on the electrode surface were characterized by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). Surface characterization of the modified electrodes was performed by energy-dispersive X-ray spectroscopy (EDX) analysis. Electrochemical determination of fish sperm DNA (fsDNA) was performed using a PPy-cryogel-modified electrode. The use of a porous 3D cryogel intermediate material enhanced the signal by providing a large surface area for the synthesis of PPy and increasing the biomolecule immobilization capacity. The detection limit was 0.98 µg mL-1 in the fsDNA concentration range 2.5-20 µg mL-1. The sensitivity of the DNA biosensor was estimated to 14.8 µA mM-1 cm-2. The stability of the biosensor under certain storage conditions was examined and observed to remain 66.95% up to 45 days.
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Affiliation(s)
- Nilay Tunca
- The Institute of Natural and Applied Sciences, Biomedical Technologies Department, Ege University, Bornova, 35100, Izmir, Turkey
- Analytical Chemistry Department, Faculty of Pharmacy, Ege University, Bornova, 35100, Izmir, Turkey
- Faculty of Engineering and Architecture, Department of Biomedical Engineering, Eskisehir Osmangazi University, 26480, Eskisehir, Turkey
| | - Meltem Maral
- Analytical Chemistry Department, Faculty of Pharmacy, Ege University, Bornova, 35100, Izmir, Turkey
| | - Esma Yildiz
- Analytical Chemistry Department, Faculty of Pharmacy, Ege University, Bornova, 35100, Izmir, Turkey
| | - Sultan Butun Sengel
- Faculty of Engineering and Architecture, Department of Biomedical Engineering, Eskisehir Osmangazi University, 26480, Eskisehir, Turkey.
| | - Arzum Erdem
- Analytical Chemistry Department, Faculty of Pharmacy, Ege University, Bornova, 35100, Izmir, Turkey.
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2
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Ciptawati E, Takase H, Watanabe NM, Okamoto Y, Nur H, Umakoshi H. Preparation and Characterization of Biodegradable Sponge-like Cryogel Particles of Chitosan via the Inverse Leidenfrost (iLF) Effect. ACS OMEGA 2024; 9:2383-2390. [PMID: 38250365 PMCID: PMC10795030 DOI: 10.1021/acsomega.3c06639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 12/18/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024]
Abstract
Chitosan-based cryogel particles were synthesized using the inverse Leidenfrost (iLF) effect, with glutaraldehyde employed as the cross-linker. The resulting cryogels exhibited a sponge-like morphology with micrometer-sized interconnected pores and demonstrated resilience, withstanding up to three compression-release cycles. These characteristics highlight the potential of chitosan cryogels for diverse applications, including adsorption and biomedical uses. We further investigated the influence of varying acetic acid concentrations on the properties of the chitosan cryogels. Our findings revealed that the particle size distribution of the cryogels ranged from 1300 to 2900 μm. As the concentration of acetic acid increased, the swelling degree of the chitosan cryogels decreased, stabilizing at an approximate value of around 6 at 0.03 mol of acetic acid. Additionally, the shift in the absorption peak of the OH and free amino groups from 3261 to 3404 cm-1 confirmed the cross-linking reaction between chitosan and glutaraldehyde.
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Affiliation(s)
- Endang Ciptawati
- Division
of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
- Department
of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Malang, Jl. Semarang 5, Malang 65145, Indonesia
| | - Hayato Takase
- Department
of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
| | - Nozomi Morishita Watanabe
- Division
of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Yukihiro Okamoto
- Division
of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Hadi Nur
- Department
of Chemistry, Faculty of Mathematics and Natural Science, Universitas Negeri Malang, Jl. Semarang 5, Malang 65145, Indonesia
| | - Hiroshi Umakoshi
- Division
of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
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3
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Yu X, Wang L, He W. Cytophilic Agarose-Epoxide-Amine Cryogels Engineered with Granulated Microstructures. ACS APPLIED BIO MATERIALS 2023; 6:694-702. [PMID: 36695539 DOI: 10.1021/acsabm.2c00938] [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: 01/26/2023]
Abstract
Inherent cytophobicity of agarose limits its direct use for the growth of anchorage-dependent cells. Here, we report a simple strategy allowing the development of agarose-based hydrogels entailed with both cytophilicity and microstructured morphology. Through the reaction of water-soluble 1,4-butanediol diglycidyl ether (BDDE) with trifunctional polyetheramine Jeffamine T403 in agarose solution followed by cryogelation of the mixtures, a series of macroporous agarose-epoxide-amine cryogels were prepared readily. Results from fluorescent labeling and energy-dispersive X-ray elemental mapping showed the formation of granulated microstructures in the cryogels. Such features closely correlated to the phase separation of BDDE-T403 polymers within the agarose matrix. Cytophilicity of the microstructured cryogels due to the integrated amine moieties was demonstrated through the adhesion of fibroblasts. Functional enrichment of the cryogels was further highlighted by leveraging the granulates as micro-reservoirs for polyphenol proanthocyanidin to enable antioxidation and protection of fibroblasts from H2O2-induced cytotoxic effect in vitro.
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Affiliation(s)
- Xueying Yu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning116024, China.,School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning116024, China
| | - Liwei Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning116024, China.,School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning116024, China
| | - Wei He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning116024, China.,School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning116024, China
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4
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Preparation of Hydrophobic Monolithic Supermacroporous Cryogel Particles for the Separation of Stabilized Oil-in-Water Emulsion. COLLOIDS AND INTERFACES 2023. [DOI: 10.3390/colloids7010009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Here, we prepared hydrophobic cryogel particles with monolithic supermacropores based on poly-trimethylolpropane trimethacrylate (pTrim) by combining the inverse Leidenfrost effect and cryo-polymerization technique. The hydrophobic cryogel particles prepared by adopting this method demonstrated the separation of the stabilized O/W emulsion with surfactant. The prepared cryogel particles were characterized in terms of macroscopic shape and porous structure. It was found that the cryogel particles had a narrow size distribution and a monolithic supermacroporous structure. The hydrophobicity of the cryogel particles was confirmed by placing aqueous and organic droplets on the particles. Where the organic droplet was immediately adsorbed into the particles, the aqueous droplet remained on the surface of the particle due to repelling force. In addition, after it adsorbed the organic droplet the particle was observed, and the organic solvent was diffused into the entire particle. It was indicated that monolithic pores were distributed from the surface to the interior. Regarding the application of the hydrophobic cryogel particles, we demonstrated the separation of a stabilized oil-in-water emulsion, resulting in the successful removal of the organic solvent from the emulsion.
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5
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Zhang W, Zhao F, Li Y, Lou X, Dai C, Lv W, Qu X, Zheng S, Chen B, Galaev IY, Yun J. Suspension and transformation performance of poly(2-hydroxyethyl methacrylate)-based anion exchange cryogel beads with immobilized Lactobacillus paracasei cells as biocatalysts towards biosynthesis of phenyllactic acid in stirred tank bioreactors. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2021.12.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Preparation and characterization of semi-hydrophobic cryogels for culture of Lactobacillus strains and bioconversion towards phenyllactic acid bioproduction. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2021.108312] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Cryostructuring of Polymeric Systems. 57. Spongy Wide-Porous Cryogels Based on the Proteins of Blood Serum: Preparation, Properties and Application as the Carriers of Peptide Bioregulators. Gels 2020; 6:gels6040050. [PMID: 33327554 PMCID: PMC7768461 DOI: 10.3390/gels6040050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 12/16/2022] Open
Abstract
Wide-pore proteinaceous freeze-thaw spongy gels were synthesized via the cryotropic gelation technique using the bovine blood serum or its diluted solutions as the protein-containing precursors. The feed systems also included the denaturant (urea) and the thiol-reductant (cysteine). The gel-fraction yield decreased and the swelling degree of the walls of macropores in such heterophase matrices increased with decreasing the initial protein concentration. The optimum freezing temperature was found to be within a rather narrow range from -15 to -20 °C. In this case, the average size of the macropores in the resultant cryogels was 90-110 μm. The suitability of such soft wide-pore gel materials for the application as the carriers of peptide bioregulators was demonstrated in the in vitro experiments, when the posterior segments of the Pleurodeles waltl adult newts' eyes were used as a model biological target. It was shown that a statistically reliable protective effect on the state of the sclera, vascular membrane and retinal pigment epithelium, as well as on the viability of fibroblasts, was inherent in the proteinaceous cryogels loaded with the peptide bioregulator (Viophtan-5™) isolated from the bovine eye sclera.
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8
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Çetin K, Aslıyüce S, Idil N, Denizli A. Preparation of lysozyme loaded gelatin microcryogels and investigation of their antibacterial properties. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 32:189-204. [PMID: 32962559 DOI: 10.1080/09205063.2020.1825303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Antibacterial micron-sized cryogels, so-called microcryogels, were prepared by cryogelation of gelatin and integration of lysozyme. Gelation yield, specific surface area, macro-porosity and swelling degree of the microcryogels were examined in order to characterize their physical properties. MTT method was utilized to measure cell viability of the gelatin microcryogels with a period of 24, 48, and 72 h and no significant decrease was observed at 72 h. Apoptotic staining assay also showed high viability at 24, 48, 72 h in parallel with the control group. The antibacterial performances of the gelatin microcryogels against Bacillus subtilis, Staphylococcus aureus, and Escherichia coli were examined. The results showed that the incorporation of lysozyme into gelatin microcryogels exhibited the antibacterial activity against S. aureus, B. subtilis, and E. coli, that may provide great potential for various applications in the biomedical industry.
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Affiliation(s)
- Kemal Çetin
- Department of Biomedical Engineering, Necmettin Erbakan University, Konya, Turkey
| | - Sevgi Aslıyüce
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Neslihan Idil
- Department of Biology, Hacettepe University, Ankara, Turkey
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, Ankara, Turkey
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9
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Lozinsky VI. Cryostructuring of Polymeric Systems. 55. Retrospective View on the More than 40 Years of Studies Performed in the A.N.Nesmeyanov Institute of Organoelement Compounds with Respect of the Cryostructuring Processes in Polymeric Systems. Gels 2020; 6:E29. [PMID: 32927850 PMCID: PMC7559272 DOI: 10.3390/gels6030029] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023] Open
Abstract
The processes of cryostructuring in polymeric systems, the techniques of the preparation of diverse cryogels and cryostructurates, the physico-chemical mechanisms of their formation, and the applied potential of these advanced polymer materials are all of high scientific and practical interest in many countries. This review article describes and discusses the results of more than 40 years of studies in this field performed by the researchers from the A.N.Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences-one of the key centers, where such investigations are carried out. The review includes brief historical information, the description of the main effects and trends characteristic of the cryostructuring processes, the data on the morphological specifics inherent in the polymeric cryogels and cryostructurates, and examples of their implementation for solving certain applied tasks.
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Affiliation(s)
- Vladimir I Lozinsky
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia
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10
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Hydrophobic cryogels prepared via cryo-polymerization as oil carriers for biosynthesis of sophorolipids. Biochem Eng J 2020. [DOI: 10.1016/j.bej.2020.107677] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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11
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Li D, Bu X, Xu Z, Luo Y, Bai H. Bioinspired Multifunctional Cellular Plastics with a Negative Poisson's Ratio for High Energy Dissipation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001222. [PMID: 32644270 DOI: 10.1002/adma.202001222] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 06/20/2020] [Indexed: 06/11/2023]
Abstract
Cellular plastics have been widely used in transportation, aerospace, and personal safety applications owing to their excellent mechanical, thermal, and acoustic properties. It is highly desirable to impart them with a complex porous structure and composition distribution to obtain specific functionality for various engineering applications, which is challenging with conventional foaming technologies. Herein, it is demonstrated that this can be achieved through the controlled freezing process of a monomer/water emulsion, followed by cryopolymerization and room temperature thawing. As ice is used as a template, this method is environmentally friendly and capable of producing cellular plastics with various microstructures by harnessing the numerous morphologies of ice crystals. In particular, a cellular plastic with a radially aligned structure shows a negative Poisson's ratio under compression. The rigid plastic shows a much higher energy dissipation capability compared to other materials with similar negative Poisson's ratios. Additionally, the simplicity and scalability of this approach provides new possibilities for fabricating high-performance cellular plastics with well-defined porous structures and composition distributions.
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Affiliation(s)
- Dewen Li
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xiaochen Bu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zongpu Xu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yingwu Luo
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Hao Bai
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China
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12
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Liquid–liquid flow patterns and slug characteristics in cross-shaped square microchannel for cryogel beads preparation. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.06.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Guan J, Guan YX, Yun J, Yao SJ. Chromatographic separation of phenyllactic acid from crude broth using cryogels with dual functional groups. J Chromatogr A 2018; 1554:92-100. [DOI: 10.1016/j.chroma.2018.04.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 04/02/2018] [Accepted: 04/18/2018] [Indexed: 01/10/2023]
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14
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Zhang W, Yang Y, Guan T, Guan J, Zheng S, Chen B, Yun J. Formation Dynamics of Cell-Loading Alginate Droplets in the Microtube Dripping and Cryo-Cross-Linking Process for Cell-Entrapped Cryogel Beads as the Biocatalysts toward Phenyllactic Acid Biosynthesis. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00831] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Wei Zhang
- Institute of Process Equipment and Control Engineering, College of Mechanical Engineering,Zhejiang University of Technology, Hangzhou 310032, China
| | - Yujun Yang
- Institute of Process Equipment and Control Engineering, College of Mechanical Engineering,Zhejiang University of Technology, Hangzhou 310032, China
| | - Tingting Guan
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jintao Guan
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Sanlong Zheng
- Institute of Process Equipment and Control Engineering, College of Mechanical Engineering,Zhejiang University of Technology, Hangzhou 310032, China
| | - Bingbing Chen
- Institute of Process Equipment and Control Engineering, College of Mechanical Engineering,Zhejiang University of Technology, Hangzhou 310032, China
| | - Junxian Yun
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
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15
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Ogawa S, Takahashi I, Koga M, Asakura K, Osanai S. Effect of Freeze–Thaw Treatment on the Precipitation of Octyl β-D-Galactoside Hemihydrate Crystal from the Aqueous Solution. J Oleo Sci 2018; 67:627-637. [DOI: 10.5650/jos.ess17232] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Shigesaburo Ogawa
- Present address: Faculty of Science and Technology, Seikei University
- School of Science and Technology, Kwansei Gakuin University
- Faculty of Science and Technology, Keio University
| | - Isao Takahashi
- School of Science and Technology, Kwansei Gakuin University
| | - Maito Koga
- Faculty of Science and Technology, Keio University
- Present address: Department of Mechanical Engineering, Tokyo Institue of Technology
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16
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Li DW, Lei X, He FL, He J, Liu YL, Ye YJ, Deng X, Duan E, Yin DC. Silk fibroin/chitosan scaffold with tunable properties and low inflammatory response assists the differentiation of bone marrow mesenchymal stem cells. Int J Biol Macromol 2017. [DOI: dx.doi.org/10.1016/j.ijbiomac.2017.07.080] [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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17
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Li DW, Lei X, He FL, He J, Liu YL, Ye YJ, Deng X, Duan E, Yin DC. Silk fibroin/chitosan scaffold with tunable properties and low inflammatory response assists the differentiation of bone marrow mesenchymal stem cells. Int J Biol Macromol 2017; 105:584-597. [DOI: 10.1016/j.ijbiomac.2017.07.080] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/06/2017] [Accepted: 07/12/2017] [Indexed: 01/27/2023]
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18
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Orakdogen N, Boyaci T. Dynamics of overall swelling profile of multiresponsive ionic dimethylacrylamide-based hydrogels and cryogels: Diffusion characteristics evaluation of salt-dependent swelling. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1354292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Nermin Orakdogen
- Soft Materials Research Laboratory, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
| | - Talin Boyaci
- Soft Materials Research Laboratory, Department of Chemistry, Istanbul Technical University, Istanbul, Turkey
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19
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Strachota B, Matějka L, Sikora A, Spěváček J, Konefał R, Zhigunov A, Šlouf M. Insight into the cryopolymerization to form a poly(N-isopropylacrylamide)/clay macroporous gel: structure and phase evolution. SOFT MATTER 2017; 13:1244-1256. [PMID: 28117862 DOI: 10.1039/c6sm02278b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The cryopolymerization and formation of a macroporous poly(N-isopropylacrylamide) (PNIPA)/clay cryogel were investigated. The mechanism of the cryopolymerization and cryogel formation was elucidated. Two processes, cryostructuration and cryopolymerization, proceed simultaneously and their relative rates determine the structure evolution and the cryogel morphology - porosity. The cryostructuration in the PNIPA/clay system during freezing, controlled by the freezing temperature and the rate of cooling, includes both water and NIPA crystallization, formation of a highly concentrated non-frozen liquid phase (NFLP) and clay aggregation. The rate of cryopolymerization and gelation is governed by the following effects: by a low polymerization temperature and after freezing, by the high cryoconcentration and a steric confinement, manifested by a reduced reagent mobility. Moreover, it depends on the cooling rate and the evolution of cryostructuration. The progress of cryostructuration and cryopolymerization during freezing was described and experimentally proved step by step. Both the phase development during freezing and the progress of cryopolymerization including gelation were monitored in situ by NMR, DSC, chemorheology and SAXS. The morphology and porosity of the cryogels were characterized by SEM and TEM.
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Affiliation(s)
- Beata Strachota
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Libor Matějka
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Antonín Sikora
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Jiří Spěváček
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Alexander Zhigunov
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
| | - Miroslav Šlouf
- Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, v.v.i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic.
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20
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Dinu MV, Cocarta AI, Dragan ES. Synthesis, characterization and drug release properties of 3D chitosan/clinoptilolite biocomposite cryogels. Carbohydr Polym 2016; 153:203-211. [DOI: 10.1016/j.carbpol.2016.07.111] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Revised: 07/06/2016] [Accepted: 07/25/2016] [Indexed: 01/18/2023]
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21
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Shan L, Gao Y, Zhang Y, Yu W, Yang Y, Shen S, Zhang S, Zhu L, Xu L, Tian B, Yun J. Fabrication and Use of Alginate-Based Cryogel Delivery Beads Loaded with Urea and Phosphates as Potential Carriers for Bioremediation. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b01256] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Lishen Shan
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, China
| | - Yunling Gao
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, China
| | - Yuanchang Zhang
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, China
| | - Wubin Yu
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, China
| | - Yujun Yang
- Institute
of Process Equipment and Control Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Shaochuan Shen
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, China
| | - Songhong Zhang
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, China
| | - Lingyu Zhu
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, China
| | - Linhong Xu
- Faculty of Mechanical & Electronic Information, China University of Geosciences (Wuhan), Wuhan 430074, China
| | - Bing Tian
- Key
Laboratory for Nuclear-Agricultural Sciences of Chinese Ministry of
Agriculture and Zhejiang Province, Zhejiang University, Hangzhou 310029, China
| | - Junxian Yun
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, China
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22
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Bäcker A, Göppert B, Sturm S, Abaffy P, Sollich T, Gruhl FJ. Impact of adjustable cryogel properties on the performance of prostate cancer cells in 3D. SPRINGERPLUS 2016; 5:902. [PMID: 27386348 PMCID: PMC4923005 DOI: 10.1186/s40064-016-2629-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 06/20/2016] [Indexed: 11/12/2022]
Abstract
Background Biochemical and physical characteristics of extracellular environment play a key role in assisting cell behavior over different molecular pathways. In this study, we investigated how the presence of chemical binding sites, the pore network and the stiffness of designed scaffolds affected prostate cancer cells. Methods A blend of poly hydroxyethyl methacrylate–alginate–gelatin scaffold was synthesized by cryogelation process using polyethyleneglycol diacrylate (PEGda) and glutaraldehyde as cross linkers. The chemical and mechanical scaffold properties were varied by concentration of gelatin and PEGda, respectively. The pore network was modified by applying different ‘freezing time’. Growth, spheroid formation and localization of androgen receptor (AR) were measured to evaluate cell response within various cryogel types. Results Insufficient porosity in combination with a brittle nature affects cell growth negatively. Spheroid size was reduced by porosity, elasticity as well as by the absence of the cell adhesive motif composed of arginine, glycine und aspartic acid (RGD). Localization of AR indicates its activity and should be under normal culture conditions in the nucleus. But in this study, we could investigate for the first time that AR remains in the cytoplasm when AR positive prostate cancer cells are cultured in scaffolds without RGD as well as in case of an insufficient pore network (total porosity under 10 %) and a too less stiffness of around 10 kPa. Conclusions The results indicate that for getting a reliable preclinical drug screening a three-dimensional prostate model system with appropriate biochemical and physical surrounding is needed.
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Affiliation(s)
- A Bäcker
- Karlsruhe Institute of Technology (KIT), Institute of Microstructure Technology (IMT), 76344 Eggenstein-Leopoldshafen, Germany
| | - B Göppert
- Karlsruhe Institute of Technology (KIT), Institute of Microstructure Technology (IMT), 76344 Eggenstein-Leopoldshafen, Germany
| | - S Sturm
- Karlsruhe Institute of Technology (KIT), Institute of Microstructure Technology (IMT), 76344 Eggenstein-Leopoldshafen, Germany
| | - P Abaffy
- Karlsruhe Institute of Technology (KIT), Institute of Microstructure Technology (IMT), 76344 Eggenstein-Leopoldshafen, Germany
| | - T Sollich
- Karlsruhe Institute of Technology (KIT), Institute of Functional Interfaces (IFG), 76344 Eggenstein-Leopoldshafen, Germany
| | - F J Gruhl
- Karlsruhe Institute of Technology (KIT), Institute of Microstructure Technology (IMT), 76344 Eggenstein-Leopoldshafen, Germany
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23
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Orakdogen N, Boyaci T. pH-stimulus on–off switching behavior and improved response rate of slightly charged poly(N,N-dimethylaminoethyl methacrylate) nano-sized composites with incorporated Laponite as crosslinker. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.03.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Lefrançois P, Ibarboure E, Payré B, Gontier E, Le Meins JF, Schatz C. Insights into Carbopol gel formulations: Microscopy analysis of the microstructure and the influence of polyol additives. J Appl Polym Sci 2015. [DOI: 10.1002/app.42761] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pauline Lefrançois
- CNRS, LCPO; UMR 5629, F-33607 Pessac France
- University of Bordeaux, LCPO; UMR 5629, F-33607 Pessac France
| | - Emmanuel Ibarboure
- CNRS, LCPO; UMR 5629, F-33607 Pessac France
- University of Bordeaux, LCPO; UMR 5629, F-33607 Pessac France
| | - Bruno Payré
- Centre de Microscopie Electronique Appliquée à la Biologie, Faculté de Médecine Rangueil, Toulouse III, Université P. Sabatier; 31062 Toulouse France
| | - Etienne Gontier
- Bordeaux Imaging Center, UMS 3420 CNRS - Université de Bordeaux; US 4 INSERM, F-33076 Bordeaux France
| | - Jean-François Le Meins
- CNRS, LCPO; UMR 5629, F-33607 Pessac France
- University of Bordeaux, LCPO; UMR 5629, F-33607 Pessac France
| | - Christophe Schatz
- CNRS, LCPO; UMR 5629, F-33607 Pessac France
- University of Bordeaux, LCPO; UMR 5629, F-33607 Pessac France
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25
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Cryogel-supported titanate nanotubes for waste treatment: Impact on methane production and bio-fertilizer quality. J Biotechnol 2015; 207:58-66. [DOI: 10.1016/j.jbiotec.2015.05.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 05/10/2015] [Accepted: 05/18/2015] [Indexed: 12/28/2022]
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26
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Separation of lactoperoxidase from bovine whey milk by cation exchange composite cryogel embedded macroporous cellulose beads. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.04.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Göktürk I, Üzek R, Uzun L, Denizli A. Synthesis of a specific monolithic column with artificial recognition sites for L-glutamic acid via cryo-crosslinking of imprinted nanoparticles. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2015; 44:1133-40. [PMID: 25749280 DOI: 10.3109/21691401.2015.1011806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In this study, a new molecular imprinting (MIP)-based monolithic cryogel column was prepared using chemically crosslinked molecularly imprinted nanoparticles, to achieve a simplified chromatographic separation (SPE) for a model compound, L-glutamic acid (L-Glu). Cryogelation through crosslinking of imprinted nanoparticles forms stable monolithic cryogel columns. This technique reduces the leakage of nanoparticles and increases the surface area, while protecting the structural features of the cryogel for stable and efficient recognition of the template molecule. A non-imprinted monolithic cryogel column (NIP) was also prepared, using non-imprinted nanoparticles produced without the addition of L-Glu during polymerization. The molecularly imprinted monolithic cryogel column (MIP) indicates apparent recognition selectivity and a good adsorption capacity compared to the NIP. Also, we have achieved a significant increase in the adsorption capacity, using the advantage of high surface area of the nanoparticles.
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Affiliation(s)
- Ilgım Göktürk
- a Nanomedicine and Nanotechnology Division, Hacettepe University , Ankara , Turkey.,b Department of Chemistry , Hacettepe University , Ankara , Turkey
| | - Recep Üzek
- b Department of Chemistry , Hacettepe University , Ankara , Turkey
| | - Lokman Uzun
- b Department of Chemistry , Hacettepe University , Ankara , Turkey
| | - Adil Denizli
- b Department of Chemistry , Hacettepe University , Ankara , Turkey
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28
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Yun J, Wu H, Liu J, Shen S, Zhang S, Xu L, Yao K, Yao SJ. Strategy of Combining Prefiltration and Chromatography Using Composite Cryogels for Large-Scale Separation of Biotransformation Compounds from Crude High-Cell-Density Broth. Ind Eng Chem Res 2015. [DOI: 10.1021/ie504718p] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Junxian Yun
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Hao Wu
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jie Liu
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Shaochuan Shen
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Songhong Zhang
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Linhong Xu
- Faculty of Mechanical & Electronic Information, China University of Geosciences (Wuhan), Wuhan 430074, China
| | - Kejian Yao
- State
Key Laboratory Breeding Base of Green Chemistry Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310032, China
| | - Shan-jing Yao
- College
of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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29
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Chromatographic adsorption of serum albumin and antibody proteins in cryogels with benzyl-quaternary amine ligands. J Chromatogr A 2015; 1381:173-83. [DOI: 10.1016/j.chroma.2014.11.081] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 11/05/2014] [Accepted: 11/28/2014] [Indexed: 11/24/2022]
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30
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Studies on the formation and characterization of macroporous electron-beam generated hyaluronan cryogels. Radiat Phys Chem Oxf Engl 1993 2014. [DOI: 10.1016/j.radphyschem.2014.05.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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31
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Welzel PB, Friedrichs J, Grimmer M, Vogler S, Freudenberg U, Werner C. Cryogel micromechanics unraveled by atomic force microscopy-based nanoindentation. Adv Healthc Mater 2014; 3:1849-53. [PMID: 24729299 DOI: 10.1002/adhm.201400102] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2014] [Revised: 03/18/2014] [Indexed: 11/12/2022]
Abstract
Cell-instructive physical characteristics of macroporous scaffolds, developed for tissue engineering applications, often remain difficult to assess. Here, an atomic force microscopy-based nanoindentation approach is adapted to quantify the local mechanical properties of biohybrid glycosaminoglycan-poly(ethylene glycol) cryogels. Resulting from cryoconcentration effects upon gel formation, cryogel struts are observed to feature a higher stiffness compared to the corresponding bulk hydrogel materials. Local Young's moduli, porosity, and integral moduli of the cryogel scaffolds are compared in dependence on gel formation parameters. The results provide valuable insights into the cryogelation process and a base for adjusting physical characteristics of the obtained cryogel scaffolds, which can critically influence the cellular response.
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Affiliation(s)
- Petra B. Welzel
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Jens Friedrichs
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Milauscha Grimmer
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Steffen Vogler
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Uwe Freudenberg
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
| | - Carsten Werner
- Leibniz Institute of Polymer Research Dresden (IPF); Max Bergmann Center of Biomaterials Dresden (MBC) and Technische Universität Dresden (TUD); Center for Regenerative Therapies Dresden (CRTD); Hohe Str. 6 01069 Dresden Germany
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32
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Zhao W, Zhang S, Lu M, Shen S, Yun J, Yao K, Xu L, Lin DQ, Guan YX, Yao SJ. Immiscible liquid–liquid slug flow characteristics in the generation of aqueous drops within a rectangular microchannel for preparation of poly(2-hydroxyethylmethacrylate) cryogel beads. Chem Eng Res Des 2014. [DOI: 10.1016/j.cherd.2014.01.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Super-porous nanocomposite PNIPAm hydrogels reinforced with titania nanoparticles, displaying a very fast temperature response as well as pH-sensitivity. Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.07.033] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Krausko J, Runštuk J, Neděla V, Klán P, Heger D. Observation of a brine layer on an ice surface with an environmental scanning electron microscope at higher pressures and temperatures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5441-5447. [PMID: 24761934 DOI: 10.1021/la500334e] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Observation of a uranyl-salt brine layer on an ice surface using backscattered electron detection and ice surface morphology using secondary-electron detection under equilibrium conditions was facilitated using an environmental scanning electron microscope (ESEM) at temperatures above 250 K and pressures of hundreds of Pa. The micrographs of a brine layer over ice grains prepared by either slow or shock freezing provided a complementary picture of the contaminated ice grain boundaries. Fluorescence spectroscopy of the uranyl ions in the brine layer confirmed that the species exists predominately in the solvated state under experimental conditions of ESEM.
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Affiliation(s)
- Ján Krausko
- Department of Chemistry, Faculty of Science, Masaryk University , Kamenice 5, 62500 Brno, Czech Republic
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35
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36
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37
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38
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Okay O, Lozinsky VI. Synthesis and Structure–Property Relationships of Cryogels. POLYMERIC CRYOGELS 2014. [DOI: 10.1007/978-3-319-05846-7_3] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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39
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40
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41
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Ye J, Yun J, Lin DQ, Xu L, Kirsebom H, Shen S, Yang G, Yao K, Guan YX, Yao SJ. Poly(hydroxyethyl methacrylate)-based composite cryogel with embedded macroporous cellulose beads for the separation of human serum immunoglobulin and albumin. J Sep Sci 2013; 36:3813-20. [DOI: 10.1002/jssc.201300911] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 10/09/2013] [Accepted: 10/09/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Jialei Ye
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; College of Chemical Engineering and Materials Science; Zhejiang University of Technology; Hangzhou China
| | - Junxian Yun
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; College of Chemical Engineering and Materials Science; Zhejiang University of Technology; Hangzhou China
| | - Dong-Qiang Lin
- Department of Chemical and Biological Engineering; Zhejiang University; Hangzhou China
| | - Linhong Xu
- Faculty of Mechanical and Electronic Information; China University of Geosciences (Wuhan); Wuhan China
| | | | - Shaochuan Shen
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; College of Chemical Engineering and Materials Science; Zhejiang University of Technology; Hangzhou China
| | - Gensheng Yang
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; College of Chemical Engineering and Materials Science; Zhejiang University of Technology; Hangzhou China
| | - Kejian Yao
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology; College of Chemical Engineering and Materials Science; Zhejiang University of Technology; Hangzhou China
| | - Yi-Xin Guan
- Department of Chemical and Biological Engineering; Zhejiang University; Hangzhou China
| | - Shan-Jing Yao
- Department of Chemical and Biological Engineering; Zhejiang University; Hangzhou China
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42
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Loo SL, Fane AG, Lim TT, Krantz WB, Liang YN, Liu X, Hu X. Superabsorbent cryogels decorated with silver nanoparticles as a novel water technology for point-of-use disinfection. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:9363-71. [PMID: 23927762 DOI: 10.1021/es401219s] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper reports the preparation of poly(sodium acrylate) (PSA) cryogels decorated with silver nanoparticles (AgNPs) for point-of-use (POU) water disinfection. The PSA/Ag cryogels combine the high porosity, excellent mechanical and water absorption properties of cryogels, and uniform dispersion of fine AgNPs on the cryogel pore surface for rapid disinfection with minimal Ag release (<100 μg L(-1)). They were used in a process that employed their ability to absorb water, which subsequently could be released via application of mild pressure. Their antibacterial performance was evaluated based on the disinfection efficacies of E. coli and B. subtilis . The PSA/Ag cryogels had excellent disinfection efficacies showing close to a 3 log reduction of viable bacteria after a brief 15 s contact time. They were highly reusable as there was no significant difference in the disinfection efficacies over five cycles of operation. The biocidal action of the PSA/Ag cryogels is believed to be dominated by surface-controlled mechanisms that are dependent on direct contact of the interface of PSA/Ag cryogels with the bacterial cells. The PSA/Ag cryogels are thought to offer a simpler approach for drinking water disinfection in disaster relief applications.
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Affiliation(s)
- Siew-Leng Loo
- Singapore Membrane Technology Centre, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, #05-05, Singapore 637141, Singapore
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43
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Xu JF, Chen YZ, Wu D, Wu LZ, Tung CH, Yang QZ. Photoresponsive Hydrogen-Bonded Supramolecular Polymers Based on a Stiff Stilbene Unit. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303496] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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44
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Xu JF, Chen YZ, Wu D, Wu LZ, Tung CH, Yang QZ. Photoresponsive Hydrogen-Bonded Supramolecular Polymers Based on a Stiff Stilbene Unit. Angew Chem Int Ed Engl 2013; 52:9738-42. [DOI: 10.1002/anie.201303496] [Citation(s) in RCA: 176] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 06/16/2013] [Indexed: 11/08/2022]
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45
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Zheng S, Wang T, Liu D, Liu X, Wang C, Tong Z. Fast deswelling and highly extensible poly(N-isopropylacrylamide)-hectorite clay nanocomposite cryogels prepared by freezing polymerization. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.02.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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46
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Hydrophobic Nano-Silica/Isobutylene-Isoprene Rubber Cryogels as Efficient and Reusable Sorbents for Oil Spills and Organic Liquids. ACTA ACUST UNITED AC 2013. [DOI: 10.4028/www.scientific.net/amm.295-298.1368] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, a new kind of nano-silica embedded cryogel was prepared by solution crosslinking isobutylene-isoprene rubber with silica in benzene at various temperatures. The characteristics of cryogels were manifested by SEM. Sorption tests showed that the cryogels were efficient at removing kinds of oil, aromatic compound and alkane. The results suggested that the maximum sorption capacity was 15.44 g.g-1 for crude oil, 15.62 g.g-1 for diesel and 13.16 g.g-1 for lubricating oil, respectively. Moreover, the cryogels were reusable once they were centrifuged, leading to continuous sorption capacity for these oils. Therefore, the cryogel might be a promising removal material which can be used in large-scale oil or toxic organic liquids spills.
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47
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Zhu J, Wang J, Liu Q, Liu Y, Wang L, He C, Wang H. Anisotropic tough poly(2-hydroxyethyl methacrylate) hydrogels fabricated by directional freezing redox polymerization. J Mater Chem B 2013; 1:978-986. [DOI: 10.1039/c2tb00288d] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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48
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Kirsebom H, Elowsson L, Berillo D, Cozzi S, Inci I, Piskin E, Galaev IY, Mattiasson B. Enzyme-catalyzed crosslinking in a partly frozen state: a new way to produce supermacroporous protein structures. Macromol Biosci 2012; 13:67-76. [PMID: 23239633 DOI: 10.1002/mabi.201200343] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 10/26/2012] [Indexed: 02/02/2023]
Abstract
In this study a new way to produce supermacroporous protein structures was investigated. Enzyme-mediated crosslinking of gelatin or casein was performed in a partly frozen state, which yielded stable, protein-based cryogels. The reaction kinetics for the formation of cryogels were found to be fairly slow, most likely due to the low temperature (-12 °C) used or due to an increased viscosity owing to the cryo-concentration taking place. The produced cryogels were characterized with regards to their physical properties and in vitro degradation. Furthermore, cryogels produced from gelatin and casein were evaluated as potential scaffolds by fibroblast cultivation to confirm their in vitro biocompatibility. Gelatin- and casein-based scaffolds both supported cell proliferation and migration through the scaffold.
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Affiliation(s)
- Harald Kirsebom
- Department of Biotechnology, Lund University, P.O. Box 124, SE-22100, Lund, Sweden.
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49
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Nardecchia S, Gutiérrez MC, Serrano MC, Dentini M, Barbetta A, Ferrer ML, del Monte F. In situ precipitation of amorphous calcium phosphate and ciprofloxacin crystals during the formation of chitosan hydrogels and its application for drug delivery purposes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:15937-15946. [PMID: 23088184 DOI: 10.1021/la3033435] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The immobilization of more than one single substance within the structure of a biocompatible polymer provides multifunctional biomaterials with attractive and enhanced properties. In the context of bone tissue engineering, it could be of great interest to synthesize a biomaterial that simultaneously contains amorphous calcium phosphate (ACP), to favor calcium and phosphate precipitation and promote osteogenesis, and an antibiotic such as ciprofloxacin (CFX) that can, eventually, avoid infections resulting after surgical scaffold implantation. However, the co-immobilization of multiple substances is by no means a trivial issue because of the enhanced number of interactions that can take place. One of the main issues is controlling not only the diverse solid forms that individual substances can eventually adopt, but also the forces responsible for the self-organization of the individual components. The latter determines whether phase-separated structures or conjugated architectures are obtained and, consequently, may dramatically affect their functionality. Herein, we have observed-by SEM, TEM, and solid-state NMR-that enzymatically-assisted coprecipitation of ACP and CFX resulted in phase-separated structures. Thus, CFX crystals showed identical morphology to that obtained in the absence of ACP, but the size was smaller. Neither the size nor the morphology of ACP exhibited significant differences whether precipitated with or without CFX, but, in the former case, ACP was stabilized over a wider range of pH and temperature. Finally, by using this methodology and the ice segregation induced self-assembly process (ISISA), we have successfully co-immobilized ACP and CFX in chitosan-based scaffolds. Interestingly, the presence of ACP exerted significant control on the CFX release from these materials.
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Affiliation(s)
- Stefania Nardecchia
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
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50
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Hajizadeh S, Kirsebom H, Leistner A, Mattiasson B. Composite cryogel with immobilized concanavalin A for affinity chromatography of glycoproteins. J Sep Sci 2012; 35:2978-85. [DOI: 10.1002/jssc.201200433] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 07/18/2012] [Accepted: 07/18/2012] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Bo Mattiasson
- Department of Biotechnology; Lund University; Lund Sweden
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