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Wu J, Wang R, Tan Y, Liu L, Chen Z, Zhang S, Lou X, Yun J. Hybrid machine learning model based predictions for properties of poly(2-hydroxyethyl methacrylate)-poly(vinyl alcohol) composite cryogels embedded with bacterial cellulose. J Chromatogr A 2024; 1727:464996. [PMID: 38763087 DOI: 10.1016/j.chroma.2024.464996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 05/10/2024] [Accepted: 05/13/2024] [Indexed: 05/21/2024]
Abstract
Supermacroporous composite cryogels with enhanced adjustable functionality have received extensive interest in bioseparation, tissue engineering, and drug delivery. However, the variations in their components significantly impactfinal properties. This study presents a two-step hybrid machine learning approach for predicting the properties of innovative poly(2-hydroxyethyl methacrylate)-poly(vinyl alcohol) composite cryogels embedded with bacterial cellulose (pHEMA-PVA-BC) based on their compositions. By considering the ratios of HEMA (1.0-22.0 wt%), PVA (0.2-4.0 wt%), poly(ethylene glycol) diacrylate (1.0-4.5 wt%), BC (0.1-1.5 wt%), and water (68.0-96.0 wt%) as investigational variables, overlay sampling uniform design (OSUD) was employed to construct a high-quality dataset for model development. The random forest (RF) model was used to classify the preparation conditions. Then four models of artificial neural network, RF, gradient boosted regression trees (GBRT), and XGBoost were developed to predict the basic properties of the composite cryogels. The results showed that the RF model achieved an accurate three-class classification of preparation conditions. Among the four models, the GBRT model exhibited the best predictive performance of the basic properties, with the mean absolute percentage error of 16.04 %, 0.85 %, and 2.44 % for permeability, effective porosity, and height of theoretical plate (1.0 cm/min), respectively. Characterization results of the representative pHEMA-PVA-BC composite cryogel showed an effective porosity of 81.01 %, a permeability of 1.20 × 10-12 m2, and a range of height of theoretical plate between 0.40-0.49 cm at flow velocities of 0.5-3.0 cm/min. These indicate that the pHEMA-PVA-BC cryogel was an excellent material with supermacropores, low flow resistance and high mass transfer efficiency. Furthermore, the model output demonstrates that the alteration of the proportions of PVA (0.2-3.5 wt%) and BC (0.1-1.5 wt%) components in composite cryogels resulted in significant changes in the material basic properties. This work represents an attempt to efficiently design and prepare target composite cryogels using machine learning and providing valuable insights for the efficient development of polymers.
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Affiliation(s)
- Jiawei Wu
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, PR China
| | - Ruobing Wang
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, PR China
| | - Yan Tan
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, PR China
| | - Lulu Liu
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, PR China
| | - Zhihong Chen
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, PR 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, PR China
| | - Xiaoling Lou
- State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Chaowang Road 18, Hangzhou 310032, PR 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, PR China.
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2
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Gerrits L, Bakker B, Hendriks LD, Engels S, Hammink R, Kouwer PHJ. Tailoring of Physical Properties in Macroporous Poly(isocyanopeptide) Cryogels. Biomacromolecules 2024; 25:3464-3474. [PMID: 38743442 PMCID: PMC11170948 DOI: 10.1021/acs.biomac.4c00086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 05/01/2024] [Accepted: 05/02/2024] [Indexed: 05/16/2024]
Abstract
Over the years, synthetic hydrogels have proven remarkably useful as cell culture matrixes to elucidate the role of the extracellular matrix (ECM) on cell behavior. Yet, their lack of interconnected macropores undermines the widespread use of hydrogels in biomedical applications. To overcome this limitation, cryogels, a class of macroporous hydrogels, are rapidly emerging. Here, we introduce a new, highly elastic, and tunable synthetic cryogel, based on poly(isocyanopeptides) (PIC). Introduction of methacrylate groups on PIC facilitated cryopolymerization through free-radical polymerization and afforded cryogels with an interconnected macroporous structure. We investigated which cryogelation parameters can be used to tune the architectural and mechanical properties of the PIC cryogels by systematically altering cryopolymerization temperature, polymer concentration, and polymer molecular weight. We show that for decreasing cryopolymerization temperatures, there is a correlation between cryogel pore size and stiffness. More importantly, we demonstrate that by simply varying the polymer concentration, we can selectively tune the compressive strength of PIC cryogels without affecting their architecture. This unique feature is highly useful for biomedical applications, as it facilitates decoupling of stiffness from other variables such as pore size. As such, PIC cryogels provide an interesting new biomaterial for scientists to unravel the role of the ECM in cellular functions.
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Affiliation(s)
- Lotte Gerrits
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Bram Bakker
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Lynn D. Hendriks
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Sjoerd Engels
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
| | - Roel Hammink
- Department
of Medical BioSciences,Radboudumc, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
- Division
of Immunotherapy, Oncode Institute, Radboud
University Medical Center, 6525 GA Nijmegen ,Netherlands
| | - Paul H. J. Kouwer
- Institute
for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Institute
for Chemical Immunology, 6525 GA Nijmegen ,Netherlands
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Takase H, Goya N, Kiyoyama S, Shiomori K, Matsune H. Preparation of Hydrophobic Cryogel Containing Hydroxyoxime Extractant and Its Extraction Properties of Cu(Ⅱ). Gels 2023; 10:9. [PMID: 38275846 PMCID: PMC10815328 DOI: 10.3390/gels10010009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/27/2024] Open
Abstract
Hydrophobic cryogels with monolithic supermacropores based on poly-trimethylolpropane trimethacrylate (pTrim) containing 1-(2-Hydroxyl-5-nonyphenyl)ethanone oxime (LIX84-I) were successfully prepared by a cryo-polymerization technique using organic solvents with freezing points between room temperature and around 0 °C as solvents. The prepared cryogels were characterized in terms of macroscopic shape and porous structure. The cryogels had a monolithic supermacroporous structure and high contents of LIX84-I depending on the added amount of the extractant to the monomer solution. The amount of LIX84-I impregnated in the cryogel had a linear relationship with the added amount of LIX84-I in the monomer solution for cryo-polymerization. Cu(II) in the aqueous solution was immediately adsorbed into the cryogel containing LIX84-I.
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Affiliation(s)
- Hayato Takase
- Department of Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan;
| | - Naoto Goya
- Department of Applied Chemistry, Graduate School of Engineering, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki 899-2192, Japan
| | - Shiro Kiyoyama
- Department of Chemical Science and Engineering, National Institute of Technology, Miyakonojo College, 473-1 Yoshi-cho, Miyakonojo-shi, Miyazaki 885-8567, Japan;
| | - Koichiro Shiomori
- Department of Applied Chemistry, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki 899-2192, Japan;
| | - Hideki Matsune
- Department of Applied Chemistry, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki 899-2192, Japan;
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4
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OKAY O. Cryogelation reactions and cryogels: principles and challenges. Turk J Chem 2023; 47:910-926. [PMID: 38173748 PMCID: PMC10760876 DOI: 10.55730/1300-0527.3586] [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: 03/30/2023] [Revised: 10/31/2023] [Accepted: 06/10/2023] [Indexed: 01/05/2024] Open
Abstract
Cryogelation is a powerful technique for producing macroporous hydrogels called cryogels. Although cryogelation reactions and cryogels were discovered more than 70 years ago, they attracted significant interest only in the last 20 years mainly due to their extraordinary properties compared to the classical hydrogels such as a high toughness, almost complete squeezability, a mechanically stable porous structure with honeycomb arrangement, poroelasticity, and fast responsivity against external stimuli. In this mini review, general properties of cryogelation systems including the cryoconcentration phenomenon responsible for the unique properties of the cryogels are discussed. The squeezability and poroelasticity of cryogels comparable to those seen with articular cartilage are also discussed. Cryogelation reactions conducted within the pores of preformed cryogels and some novel cryogels with attractive properties are then discussed in the last section.
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Affiliation(s)
- Oğuz OKAY
- Department of Chemistry, Istanbul Technical University, İstanbul,
Turkiye
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5
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Adamiak K, Sionkowska A. State of Innovation in Alginate-Based Materials. Mar Drugs 2023; 21:353. [PMID: 37367678 PMCID: PMC10302983 DOI: 10.3390/md21060353] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 06/05/2023] [Accepted: 06/05/2023] [Indexed: 06/28/2023] Open
Abstract
This review article presents past and current alginate-based materials in each application, showing the widest range of alginate's usage and development in the past and in recent years. The first segment emphasizes the unique characteristics of alginates and their origin. The second segment sets alginates according to their application based on their features and limitations. Alginate is a polysaccharide and generally occurs as water-soluble sodium alginate. It constitutes hydrophilic and anionic polysaccharides originally extracted from natural brown algae and bacteria. Due to its promising properties, such as gelling, moisture retention, and film-forming, it can be used in environmental protection, cosmetics, medicine, tissue engineering, and the food industry. The comparison of publications with alginate-based products in the field of environmental protection, medicine, food, and cosmetics in scientific articles showed that the greatest number was assigned to the environmental field (30,767) and medicine (24,279), whereas fewer publications were available in cosmetic (5692) and food industries (24,334). Data are provided from the Google Scholar database (including abstract, title, and keywords), accessed in May 2023. In this review, various materials based on alginate are described, showing detailed information on modified composites and their possible usage. Alginate's application in water remediation and its significant value are highlighted. In this study, existing knowledge is compared, and this paper concludes with its future prospects.
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Affiliation(s)
- Katarzyna Adamiak
- Department of Biomaterials and Cosmetic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarin 7 Street, 87-100 Torun, Poland;
- WellU sp.z.o.o., Wielkopolska 280, 81-531 Gdynia, Poland
| | - Alina Sionkowska
- Department of Biomaterials and Cosmetic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Torun, Gagarin 7 Street, 87-100 Torun, Poland;
- Faculty of Health Sciences, Calisia University, Nowy Świat 4, 62-800 Kalisz, Poland
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6
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Hou SC, Zhang DW, Chen J, Guo XX, Haleem A, He WD. Sulfonated PAM/PPy Cryogels with Lowered Evaporation Enthalpy for Highly Efficient Photothermal Water Evaporation. Polymers (Basel) 2023; 15:polym15092108. [PMID: 37177254 PMCID: PMC10180751 DOI: 10.3390/polym15092108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Because of the increasing scarcity of water resources, the desalination of seawater by photothermal evaporation with harvested solar energy has gradually become a popular research topic. The interconnected macroporous cryogel prepared from polymerization and crosslinking below the freezing temperature of the reactant solution has an excellent performance in photothermal water evaporation after loading photothermal materials. In this study, polyacrylamide (PAM) cryogels were prepared by cryo-polymerization and sulfonated in an alkaline solution containing formaldehyde and Na2SO3. Importantly, the evaporation enthalpy of water in sulfonated PAM cryogel was reduced to 1187 J·g-1 due to the introduction of sulfonate groups into PAM, which was beneficial to increase the photothermal evaporation rate and efficiency. The sulfonated PAM cryogels loaded with polypyrrole and the umbrella-shaped melamine foam substrate were combined to form a photothermal evaporation device, and the evaporation rate was as high as 2.50 kg·m-2·h-1 under one-sun radiation. Meanwhile, the evaporation rate reached 2.09 kg·m-2·h-1 in the 14 wt% high-concentration saline solution, and no salt crystals appeared on the surface of the cryogel after 5 h of photothermal evaporation. Therefore, it was evidenced that the presence of sulfonate groups not only reduced the evaporation enthalpy of water but also prevented salting-out from blocking the water delivery channel during photothermal evaporation, with a sufficiently high evaporation rate, providing a reliable idea of matrix modification for the design of high-efficiency photothermal evaporation materials.
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Affiliation(s)
- Shi-Chang Hou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Dao-Wei Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Jun Chen
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xiao-Xiao Guo
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Abdul Haleem
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Wei-Dong He
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
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7
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Babanejad N, Mfoafo K, Thumma A, Omidi Y, Omidian H. Advances in cryostructures and their applications in biomedical and pharmaceutical products. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-023-04683-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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8
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Kumar A, Das T, Thakur RS, Fatima Z, Prasad S, Ansari NG, Patel DK. Synthesis of Biomass-Derived Activated Carbons and Their Immobilization on Alginate Gels for the Simultaneous Removal of Cr(VI), Cd(II), Pb(II), As(III), and Hg(II) from Water. ACS OMEGA 2022; 7:41997-42011. [PMID: 36440176 PMCID: PMC9685772 DOI: 10.1021/acsomega.2c03786] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
Low-cost alginate gels of activated carbons were prepared, which were derived from the peels of banana and sweet lime. The synthesized carbon was activated and immobilized on alginate, producing its gel. These gels were categorized according to their methods of drying, in which air drying, freeze drying, and supercritical drying led to the formation of xerogels, cryogels, and aerogels, respectively. The gels were used for adsorption of heavy metals from their aqueous solution. The heavy metals that were targeted for removal were Pb(II), Cd(II), Cr(VI), As(III), and Hg(II). Among all the adsorbents, the alginate cryogel of sweet lime-derived activated carbon (SLACC) showed the highest removal percentage of heavy metals, and thus, it was used for batch study. The adsorption of heavy metals by SLACC was checked at different times, pH values, adsorbent doses, temperatures, and adsorbate concentrations. The study revealed that the pseudo-second-order model best described the kinetic study, while the adsorption followed the Freundlich isotherm. SLACC showed maximum adsorption capacities (q cal) of 3.71, 4.22, 20.04, 7.31, and 4.37 mg/g for Cr, Cd, Pb, As, and Hg, respectively, when 20 mg of SLACC was used for the removal of 4 ppm concentration of the targeted heavy metals from their 20 mL solution. Based on the thermodynamic study, it was found that the adsorption was spontaneous and exothermic. Furthermore, the adsorbent was also used on real water samples and showed up to 90% removal efficiency for these targeted heavy metals. SLACC was regenerated with 0.1 M ethylenediaminetetraacetic acid (EDTA) solution and reused for five cycles, in which the percentage removal of heavy metals was more than 50% till the fourth cycle. Furthermore, the leaching study showed that no toxic elements had leached from SLACC into water, making it a safe adsorbent.
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Affiliation(s)
- Aditya Kumar
- Analytical
Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi
Marg, Lucknow226001, Uttar Pradesh, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Triparna Das
- Analytical
Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi
Marg, Lucknow226001, Uttar Pradesh, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Ravindra Singh Thakur
- Analytical
Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi
Marg, Lucknow226001, Uttar Pradesh, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Zeenat Fatima
- Analytical
Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi
Marg, Lucknow226001, Uttar Pradesh, India
| | - Satgur Prasad
- Analytical
Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi
Marg, Lucknow226001, Uttar Pradesh, India
| | - Nasreen G. Ansari
- Analytical
Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi
Marg, Lucknow226001, Uttar Pradesh, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
| | - Devendra K. Patel
- Analytical
Chemistry Laboratory, Regulatory Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi
Marg, Lucknow226001, Uttar Pradesh, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad201002, India
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Applications of Cryostructures in the Chromatographic Separation of Biomacromolecules. J Chromatogr A 2022; 1683:463546. [DOI: 10.1016/j.chroma.2022.463546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 09/05/2022] [Accepted: 09/29/2022] [Indexed: 12/20/2022]
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10
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Highly performant nanocomposite cryogels for multicomponent oily wastewater filtration. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Fab fragment immobilized immunoaffinity cryogels as a tool for human serum albumin purification: Characterization of Fab immobilized cryogels. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1203:123311. [DOI: 10.1016/j.jchromb.2022.123311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/21/2022] [Accepted: 05/23/2022] [Indexed: 10/18/2022]
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12
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Chen J, Liao C, Guo XX, Hou SC, He WD. PAAO cryogels from amidoximated P(acrylic acid-co-acrylonitrile) for the adsorption of lead ion. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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13
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Cellulose Cryogels as Promising Materials for Biomedical Applications. Int J Mol Sci 2022; 23:ijms23042037. [PMID: 35216150 PMCID: PMC8880007 DOI: 10.3390/ijms23042037] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 02/04/2022] [Accepted: 02/11/2022] [Indexed: 02/01/2023] Open
Abstract
The availability, biocompatibility, non-toxicity, and ease of chemical modification make cellulose a promising natural polymer for the production of biomedical materials. Cryogelation is a relatively new and straightforward technique for producing porous light and super-macroporous cellulose materials. The production stages include dissolution of cellulose in an appropriate solvent, regeneration (coagulation) from the solution, removal of the excessive solvent, and then freezing. Subsequent freeze-drying preserves the micro- and nanostructures of the material formed during the regeneration and freezing steps. Various factors can affect the structure and properties of cellulose cryogels, including the cellulose origin, the dissolution parameters, the solvent type, and the temperature and rate of freezing, as well as the inclusion of different fillers. Adjustment of these parameters can change the morphology and properties of cellulose cryogels to impart the desired characteristics. This review discusses the structure of cellulose and its properties as a biomaterial, the strategies for cellulose dissolution, and the factors affecting the structure and properties of the formed cryogels. We focus on the advantages of the freeze-drying process, highlighting recent studies on the production and application of cellulose cryogels in biomedicine and the main cryogel quality characteristics. Finally, conclusions and prospects are presented regarding the application of cellulose cryogels in wound healing, in the regeneration of various tissues (e.g., damaged cartilage, bone tissue, and nerves), and in controlled-release drug delivery.
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Çetin K, Denizli A. Polyethylenimine-functionalized microcryogels for controlled release of diclofenac sodium. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2021.105125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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15
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Inanan T. Cryogel disks for lactase immobilization and lactose-free milk production. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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17
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Preparation and Characterization of Calcium Cross-Linked Starch Monolithic Cryogels and Their Application as Cost-Effective Green Filters. Polymers (Basel) 2021; 13:polym13223975. [PMID: 34833272 PMCID: PMC8617897 DOI: 10.3390/polym13223975] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/12/2021] [Accepted: 11/13/2021] [Indexed: 11/30/2022] Open
Abstract
Monolithic cryogels from starch were successfully synthesized and applied as alternative biodegradable filters for the first time. Rice flour was cross-linked with Ca2+ from limewater during gelatinization before being frozen and then thawed for three cycles. The resultant material was then soaked in ethanol for 3 h before incubation at 80 °C for 1 h, yielding monolithic material with interconnected pores in sizes of 51 ± 18 to 52 ± 15 µm without any need of freeze-drying. The cryogels possessed macroporous structure with specific surface areas from 1.1 to 4.3 m2g−1, they could adsorb water from 599 ± 27 to 635 ± 59% of their dry weight with low swelling ratios of 6.0 ± 0.3 to 6.4 ± 0.6 gwater/gcryogel, and could be applied as biofilters to remove suspended particles and reduce the light absorption of water sample from 25 ± 3 to 96 ± 5%. The prepared biofilters can be re-used up to three times, although they cost only USD 0.0004/piece. Complete weight loss resulted from burial in soil for 30 days, indicating environmentally friendly biodegradation and potential for environmental applications.
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Jones LO, Williams L, Boam T, Kalmet M, Oguike C, Hatton FL. Cryogels: recent applications in 3D-bioprinting, injectable cryogels, drug delivery, and wound healing. Beilstein J Org Chem 2021; 17:2553-2569. [PMID: 34760024 PMCID: PMC8551881 DOI: 10.3762/bjoc.17.171] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/21/2021] [Indexed: 12/19/2022] Open
Abstract
Cryogels are macroporous polymeric structures formed from the cryogelation of monomers/polymers in a solvent below freezing temperature. Due to their inherent interconnected macroporosity, ease of preparation, and biocompatibility, they are increasingly being investigated for use in biomedical applications such as 3D-bioprinting, drug delivery, wound healing, and as injectable therapeutics. This review highlights the fundamentals of macroporous cryogel preparation, cryogel properties that can be useful in the highlighted biomedical applications, followed by a comprehensive review of recent studies in these areas. Research evaluated includes the use of cryogels to combat various types of cancer, for implantation without surgical incision, and use as highly effective wound dressings. Furthermore, conclusions and outlooks are discussed for the use of these promising and durable macroporous cryogels.
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Affiliation(s)
- Luke O Jones
- Department of Materials, Loughborough University, Loughborough, LE11 3TU, UK
| | - Leah Williams
- Department of Materials, Loughborough University, Loughborough, LE11 3TU, UK
| | - Tasmin Boam
- Department of Materials, Loughborough University, Loughborough, LE11 3TU, UK
| | - Martin Kalmet
- Department of Materials, Loughborough University, Loughborough, LE11 3TU, UK
| | - Chidubem Oguike
- Department of Materials, Loughborough University, Loughborough, LE11 3TU, UK
| | - Fiona L Hatton
- Department of Materials, Loughborough University, Loughborough, LE11 3TU, UK
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19
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Choodum A, Lamthornkit N, Boonkanon C, Taweekarn T, Phatthanawiwat K, Sriprom W, Limsakul W, Chuenchom L, Wongniramaikul W. Greener Monolithic Solid Phase Extraction Biosorbent Based on Calcium Cross-Linked Starch Cryogel Composite Graphene Oxide Nanoparticles for Benzo(a)pyrene Analysis. Molecules 2021; 26:6163. [PMID: 34684744 PMCID: PMC8539787 DOI: 10.3390/molecules26206163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 11/16/2022] Open
Abstract
Benzo(a)pyrene (BaP) has been recognized as a marker for the detection of carcinogenic polycyclic aromatic hydrocarbons. In this work, a novel monolithic solid-phase extraction (SPE) sorbent based on graphene oxide nanoparticles (GO) in starch-based cryogel composite (GO-Cry) was successfully prepared for BaP analysis. Rice flour and tapioca starch (gel precursors) were gelatinized in limewater (cross-linker) under alkaline conditions before addition of GO (filler) that can increase the ability to extract BaP up to 2.6-fold. BaP analysis had a linear range of 10 to 1000 µgL-1 with good linearity (R2 = 0.9971) and high sensitivity (4.1 ± 0.1 a.u./(µgL-1)). The limit of detection and limit of quantification were 4.21 ± 0.06 and 14.04 ± 0.19 µgL-1, respectively, with excellent precision (0.17 to 2.45%RSD). The accuracy in terms of recovery from spiked samples was in the range of 84 to 110% with no significant difference to a C18 cartridge. GO-Cry can be reproducibly prepared with 2.8%RSD from 4 lots and can be reused at least 10 times, which not only helps reduce the analysis costs (~0.41USD per analysis), but also reduces the resultant waste to the environment.
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Affiliation(s)
- Aree Choodum
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Phuket Campus, Prince of Songkla University, Kathu, Phuket 83120, Thailand; (N.L.); (C.B.); (T.T.); (K.P.); (W.S.); (W.L.); (W.W.)
| | - Nareumon Lamthornkit
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Phuket Campus, Prince of Songkla University, Kathu, Phuket 83120, Thailand; (N.L.); (C.B.); (T.T.); (K.P.); (W.S.); (W.L.); (W.W.)
| | - Chanita Boonkanon
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Phuket Campus, Prince of Songkla University, Kathu, Phuket 83120, Thailand; (N.L.); (C.B.); (T.T.); (K.P.); (W.S.); (W.L.); (W.W.)
| | - Tarawee Taweekarn
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Phuket Campus, Prince of Songkla University, Kathu, Phuket 83120, Thailand; (N.L.); (C.B.); (T.T.); (K.P.); (W.S.); (W.L.); (W.W.)
| | - Kharittha Phatthanawiwat
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Phuket Campus, Prince of Songkla University, Kathu, Phuket 83120, Thailand; (N.L.); (C.B.); (T.T.); (K.P.); (W.S.); (W.L.); (W.W.)
| | - Wilasinee Sriprom
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Phuket Campus, Prince of Songkla University, Kathu, Phuket 83120, Thailand; (N.L.); (C.B.); (T.T.); (K.P.); (W.S.); (W.L.); (W.W.)
| | - Wadcharawadee Limsakul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Phuket Campus, Prince of Songkla University, Kathu, Phuket 83120, Thailand; (N.L.); (C.B.); (T.T.); (K.P.); (W.S.); (W.L.); (W.W.)
| | - Laemthong Chuenchom
- Center of Excellence for Innovation in Chemistry, Division of Physical Science, Faculty of Science, Hat Yai Campus, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand;
| | - Worawit Wongniramaikul
- Integrated Science and Technology Research Center, Faculty of Technology and Environment, Phuket Campus, Prince of Songkla University, Kathu, Phuket 83120, Thailand; (N.L.); (C.B.); (T.T.); (K.P.); (W.S.); (W.L.); (W.W.)
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20
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Zhang J, Zhang X, Tian Y, Zhong T, Liu F. Novel and wet-resilient cellulose nanofiber cryogels with tunable porosity and improved mechanical strength for methyl orange dyes removal. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125897. [PMID: 34492835 DOI: 10.1016/j.jhazmat.2021.125897] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/29/2021] [Accepted: 04/12/2021] [Indexed: 06/13/2023]
Abstract
Interconnected macro-porous cryogels with robust and pore-tunable structures have been fabricated using chemically crosslinked microfibrillated cellulose (MFC). Periodate oxidation was initially conducted to introduce aldehyde groups into the MFC surface, followed by the freeze-induced chemical crosslinking via the formation of hemiacetal bonds between aldehyde and hydroxyl at -12 °C. The cryogels with pore-tunable structures and sharply enhanced mechanical strengths were finally achieved by re-assembly of MFCs through soaking in NaIO4 solution. Furthermore, the MFC cryogels were post-crosslinked by polyethyleneimine (PEI), bestowing the cryogels with the capability of adsorbing anionic dyes. The stress of the PEI-MFC cryogel at the 80% strain was determined to be 304.5 kPa, which is the maximum value for the nanocellulose-based cryogels reported so far. Finally, the adsorption performances of PEI-MFC cryogels for methyl orange (MO) were evaluated. Maximum adsorption capacity of 500 mg/g could be obtained by the Langmuir model, outperforming that of previous absorbent materials. Reuse experiments indicated that over 90% of adsorption capacity was retained after 6 cycles. Continuous clean-up experiments demonstrated excellent MO removal abilities of the PEI-MFC cryogel. This study shows that the novel, green strategy to fabricate the robust cryogel extends the practical applications of nanocellulose adsorbents for environmental remediation.
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Affiliation(s)
- Jinmeng Zhang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Xufeng Zhang
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Yiran Tian
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Tianyi Zhong
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
| | - Fengyi Liu
- College of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China.
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21
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Park E, Ryu JH, Lee D, Lee H. Freeze-Thawing-Induced Macroporous Catechol Hydrogels with Shape Recovery and Sponge-like Properties. ACS Biomater Sci Eng 2021; 7:4318-4329. [PMID: 33821606 DOI: 10.1021/acsbiomaterials.0c01767] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catechol-containing hydrogels have been exploited in biomedical fields due to their adhesive and cohesive properties, hemostatic abilities, and biocompatibility. Catechol moieties can be oxidized to o-catecholquinone, a chemically active intermediate, in the presence of oxygen to act as an electrophile to form catechol-catechol or catechol-amine/thiol adducts. To date, catechol cross-linking chemistry to fabricate hydrogels has been mostly performed at room temperature. Herein, we report large increases in catechol cross-linking reaction kinetics by the freeze-thawing process. The formation of ice crystals during freezing steps spatially condenses catechol-containing polymers into nearly frozen (yet unfrozen) regions, resulting in decreases in the polymeric chain distances. This environment allows great increases in catechol cross-linking kinetics, a phenomenon that can also occur during thawing steps. The increased cross-linking rate and spatial condensation in the cryogels provide unique wall and pore structures, which result in elastic, spongelike hydrogels. The moduli of the cryogels prepared by glycol-chitosan-catechol (g-chitosan-c) were improved by 3-6-fold compared to room temperature-cured conventional hydrogels, and the degree of improvement increased depending on the freezing time and the number of freeze-thawing cycles. Unlike typical cell encapsulations before cross-linking, which have often been a source of cytotoxicity, the macroporosity of cryogels allows nontoxic cell seeding with ease. This research offers a new way to utilize catechol cross-linking chemistry by freeze-thawing processes to simultaneously regulate mechanical strength and porous structures in catechol-containing hydrogels.
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Affiliation(s)
- Eunsook Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Ji Hyun Ryu
- Department of Carbon Convergence Engineering, Wonkwang University, Iksan, Jeonbuk 54538, Republic of Korea
| | - Daiheon Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Haeshin Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
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22
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Çimen D, Özbek MA, Bereli N, Mattiasson B, Denizli A. Injectable Cryogels in Biomedicine. Gels 2021; 7:gels7020038. [PMID: 33915687 PMCID: PMC8167568 DOI: 10.3390/gels7020038] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 02/07/2023] Open
Abstract
Cryogels are interconnected macroporous materials that are synthesized from a monomer solution at sub-zero temperatures. Cryogels, which are used in various applications in many research areas, are frequently used in biomedicine applications due to their excellent properties, such as biocompatibility, physical resistance and sensitivity. Cryogels can also be prepared in powder, column, bead, sphere, membrane, monolithic, and injectable forms. In this review, various examples of recent developments in biomedical applications of injectable cryogels, which are currently scarce in the literature, made from synthetic and natural polymers are discussed. In the present review, several biomedical applications of injectable cryogels, such as tissue engineering, drug delivery, therapeutic, therapy, cell transplantation, and immunotherapy, are emphasized. Moreover, it aims to provide a different perspective on the studies to be conducted on injectable cryogels, which are newly emerging trend.
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Affiliation(s)
- Duygu Çimen
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey; (D.Ç.); (M.A.Ö.); (N.B.)
| | - Merve Asena Özbek
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey; (D.Ç.); (M.A.Ö.); (N.B.)
| | - Nilay Bereli
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey; (D.Ç.); (M.A.Ö.); (N.B.)
| | - Bo Mattiasson
- Department of Biotechnology, Lund University, Box 124, 221 00 Lund, Sweden;
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, Ankara 06800, Turkey; (D.Ç.); (M.A.Ö.); (N.B.)
- Correspondence:
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23
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Eigel D, Werner C, Newland B. Cryogel biomaterials for neuroscience applications. Neurochem Int 2021; 147:105012. [PMID: 33731275 DOI: 10.1016/j.neuint.2021.105012] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 12/16/2022]
Abstract
Biomaterials in the form of 3D polymeric scaffolds have been used to create structurally and functionally biomimetic constructs of nervous system tissue. Such constructs can be used to model defects and disease or can be used to supplement neuronal tissue regeneration and repair. One such group of biomaterial scaffolds are hydrogels, which have been widely investigated for cell/tissue culture and as cell or molecule delivery systems in the field of neurosciences. However, a subset of hydrogels called cryogels, have shown to possess several distinct structural advantages over conventional hydrogel networks. Their macroporous structure, created via the time and resource efficient fabrication process (cryogelation) not only allows mass fluid transport throughout the structure, but also creates a high surface area to volume ratio for cell growth or drug loading. In addition, the macroporous structure of cryogels is ideal for applications in the central nervous system as they are very soft and spongey, yet also robust, which makes them a user-friendly and reproducible tool to address neuroscience challenges. In this review, we aim to provide the neuroscience community, who may not be familiar with the fundamental concepts of cryogels, an accessible summary of the basic information that pertain to their use in the brain and nervous tissue. We hope that this review shall initiate creative ways that cryogels could be further adapted and employed to tackle unsolved neuroscience challenges.
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Affiliation(s)
- Dimitri Eigel
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069, Dresden, Germany
| | - Carsten Werner
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069, Dresden, Germany; Technische Universität Dresden, Center for Regenerative Therapies Dresden, Dresden, Germany
| | - Ben Newland
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069, Dresden, Germany; School of Pharmacy and Pharmaceutical Sciences, Cardiff University, CF10 3NB, Cardiff, Wales, UK.
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24
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Fu CY, Chuang WT, Hsu SH. A Biodegradable Chitosan-Polyurethane Cryogel with Switchable Shape Memory. ACS APPLIED MATERIALS & INTERFACES 2021; 13:9702-9713. [PMID: 33600161 DOI: 10.1021/acsami.0c21940] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Cryogels are matrices that are formed in moderately frozen solutions of monomeric or polymeric precursors. They have the advantages of interconnected macropores, structural stability, and compressibility. Meanwhile, thermally induced shape memory is an attractive feature of certain functional materials. Although there have been several studies concerning shape-memory cryogels, little work has been conducted on shape-memory cryogels with biodegradability. In this study, a water-based biodegradable difunctional polyurethane with a shape-memory property was synthesized and used as the nanoparticulate crosslinker to react with chitosan to form a shape-memory cryogel. The thermally induced shape-memory mechanism was clarified using in situ wide-angle X-ray scattering (WAXS) and small-angle X-ray scattering (SAXS) during the shape-memory process. The in situ WAXS showed the changes of crystallinity in the crosslinker and the cryogel during the shape fixation and recovery processes. The in situ SAXS revealed the orientation of crystallinity of the crosslinker and the cryogel as the mechanism for shape memory. The strip-shape cryogel was deformed at 50 °C to U-shape and fixed at - 20 °C, which was squeezable at 25 °C and returned to the strip-shape at 50 °C in air. The shape recovery was further tested in water at two different temperatures. The injected cryogel recovered the U-shape in 4 °C water, representing elastic recovery, and transformed to a long strip in 37 °C water, representing the switchable shape memory. Moreover, the shape-memory cryogel sheet with a large dimension (10 mm × 10 mm × 1.1 mm cryogel sheet) or with complex structures (N, T, and U shapes) could be fixed as a rod, injected through a 16 G needle, and return to its original shape in 37 °C water, all of which could not be achieved by the conventional cryogel. Human mesenchymal stem cells grown in the shape-memory cryogel scaffolds displayed long-term proliferation and chondrogenic potential. Their unique injectability and cytocompatibility suggested potential applications of shape-memory cryogels as injectable and expandable templates for tissue engineering and minimally invasive surgery.
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Affiliation(s)
- Chih-Yu Fu
- Institute of Polymer Science and Engineering, National Taiwan University, No. 1, Sec. 4 Roosevelt Road, Taipei Taiwan 10617, Republic of China
| | - Wei-Tsung Chuang
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan 30076, Republic of China
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, No. 1, Sec. 4 Roosevelt Road, Taipei Taiwan 10617, Republic of China
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25
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Demirci S, Sahiner M, Yilmaz S, Karadag E, Sahiner N. Enhanced enzymatic activity and stability by in situ entrapment of α-Glucosidase within super porous p(HEMA) cryogels during synthesis. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2020; 28:e00534. [PMID: 33024715 PMCID: PMC7528077 DOI: 10.1016/j.btre.2020.e00534] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/08/2020] [Accepted: 09/25/2020] [Indexed: 01/09/2023]
Abstract
Here, poly(2-hydroxyethyl methacrylate) (p(HEMA)) cryogel were prepared in the presence 0.48, 0.96, and 1.92 mL of α-Glucosidase enzyme (0.06 Units/mL) solutions to obtain enzyme entrapped superporous p(HEMA) cryogels, donated as α-Glucosidase@p(HEMA)-1, α-Glucosidase@p(HEMA)-2, and α-Glucosidase@p(HEMA)-3, respectively. The enzyme entrapped p(HEMA) cryogels revealed no interruption for hemolysis and coagulation of blood rendering viable biomedical application in blood contacting applications. The α-Glucosidase@p(HEMA)-1 was found to preserve its' activity% 92.3 ± 1.4 % and higher activity% against free α-Glucosidase enzymes in 15-60℃ temperature, and 4-9 pH range. The Km and Vmax values of α-Glucosidase@p(HEMA)-1 cryogel was calculated as 3.22 mM, and 0.0048 mM/min, respectively versus 1.97 mM, and 0.0032 mM/min, for free enzymes. The α-Glucosidase@p(HEMA)-1 cryogel was found to maintained enzymatic activity more than 50 % after 10 consecutive uses, and also preserved their activity more than 50 % after 10 days of storage at 25 ℃, whereas free α-Glucosidase enzyme maintained only 1.9 ± 0.9 % activity under the same conditions.
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Affiliation(s)
- Sahin Demirci
- Department of Chemistry, Faculty of Sciences and Arts, Canakkale Onsekiz Mart University Terzioglu Campus, 17100, Canakkale, Turkey
- Nanoscience and Technology Research and Application Center, Canakkale Onsekiz Mart University Terzioglu Campus, 17100, Canakkale, Turkey
| | - Mehtap Sahiner
- Department of Fashion Design, Faculty of Canakkale Applied Science, Canakkale Onsekiz Mart University Terzioglu Campus, 17100, Canakkale, Turkey
| | - Selehattin Yilmaz
- Department of Chemistry, Faculty of Sciences and Arts, Canakkale Onsekiz Mart University Terzioglu Campus, 17100, Canakkale, Turkey
| | - Erdener Karadag
- Department of Chemistry, Faculty of Sciences and Arts, Aydın Adnan Menderes University, 09010, Aydın, Turkey
| | - Nurettin Sahiner
- Department of Chemistry, Faculty of Sciences and Arts, Canakkale Onsekiz Mart University Terzioglu Campus, 17100, Canakkale, Turkey
- Nanoscience and Technology Research and Application Center, Canakkale Onsekiz Mart University Terzioglu Campus, 17100, Canakkale, Turkey
- Department of Chemical and Biomolecular Engineering, University of South Florida, Tampa, FL, 33620 USA
- Department of Ophthalmology, Morsani College of Medicine, University of South Florida, 12901 Bruce B Downs B. Downs Blv., MDC 21, Tampa, FL 33612, USA
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Highly elastic, electroconductive, immunomodulatory graphene crosslinked collagen cryogel for spinal cord regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111518. [PMID: 33255073 DOI: 10.1016/j.msec.2020.111518] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 07/31/2020] [Accepted: 08/12/2020] [Indexed: 12/22/2022]
Abstract
Novel amino-functionalized graphene crosslinked collagen based nerve conduit having appropriate electric (3.8 ± 0.2 mSiemens/cm) and mechanical cues (having young modulus value of 100-347 kPa) for stem cell transplantation and neural tissue regeneration was fabricated using cryogelation. The developed conduit has shown sufficiently high porosity with interconnectivity between the pores. Raman spectroscopy analysis revealed the increase in orderliness and crosslinking of collagen molecules in the developed cryogel due to the incorporation of amino-functionalized graphene. BM-MSCs grown on graphene collagen cryogels have shown enhanced expression of CD90 and CD73 gene upon electric stimulation (100 mV/mm) contributing towards maintaining their stemness. Furthermore, an increased secretion of ATP from BM-MSCs grown on graphene collagen cryogel was also observed upon electric stimulation that may help in regeneration of neurons and immuno-modulation. Neuronal differentiation of BM-MSCs on graphene collagen cryogel in the presence of electric stimulus showed an enhanced expression of MAP-2 kinase and β-tubulin III. Immunohistochemistry studies have also demonstrated the improved neuronal differentiation of BM-MSCs. BM-MSCs grown on electro-conductive collagen cryogels under inflammatory microenvironment in vitro showed high indoleamine 2,3 dioxygenase activity. Moreover, macrophages cells grown on graphene collagen cryogels have shown high CD206 (M2 polarization marker) and CD163 (M2 polarization marker) and low CD86 (M1 polarization marker) gene expression demonstrating M2 polarization of macrophages, which may aid in tissue repair. In an organotypic culture, the developed cryogel conduit has supported cellular growth and migration from adult rat spinal cord. Thus, this novel electro-conductive graphene collagen cryogels have potential for suppressing the neuro-inflammation and promoting the neuronal cellular migration and proliferation, which is a major barrier during the spinal cord regeneration.
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SHAH S, SHAİKH H, MEMON N, BHANGER MI, QURESHİ T, KHAN H, DENİZLİ A. Preparation, characterization, and binding profile of imprinted semi-IPN cryogel composite for aluminum. Turk J Chem 2020; 44:901-922. [PMID: 33488201 PMCID: PMC7751924 DOI: 10.3906/kim-2002-36] [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: 02/12/2020] [Accepted: 05/04/2020] [Indexed: 01/04/2023] Open
Abstract
Human body is greatly exposed to aluminum due to its high abundance in the environment. This nonessential metal is a threat to the patients of chronic renal disorders, as it is easily retained in their plasma and quickly accumulates in different tissues. Thus, there is great need to remove it from the aqueous environment. In this study, Al3+ imprinted semiinterpenetrating polymer network (semi-IPN)-based cryogel composite was prepared and applied for the purification of environmental and drinking water samples from aluminum. Poly (2-hydroxyethyl methacrylate) (pHEMA) discs were produced via cryogenic treatment and imprinted semi-IPN was introduced to the 3-(trimethoxysilyl) propyl acrylatemodified macroporous cryogel discs. The adsorption properties and selectivity of the aluminum (III) imprinted semi-IPN cryogel composite were studied in detail. The imprinted semi-IPN cryogel composite showed good selectivity towards aluminum (III) ions with the imprinting factor (IF) of 76.4 in the presence of competing copper (II), nickle (II), and iron (III) ions. The maximum adsorption capacity of 271 μmol g-1 was obtained for aluminum (III) at pH 7.0 within 10 min using imprinted semi-IPN cryogel composite. The good selectivity and reusability of aluminum (III)-imprinted semi-IPN cryogel composite makes this material an eligible candidate for the purification of drinking water from aluminum (III) leaving important minerals remained in the water.
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Affiliation(s)
- Shahnila SHAH
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Huma SHAİKH
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Najma MEMON
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Muhammad Iqbal BHANGER
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Tahira QURESHİ
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Humaira KHAN
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
| | - Adil DENİZLİ
- National Center of Excellence in Analytical Chemistry, University of Sindh, JamshoroPakistan
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Haleem A, Li HJ, Li PY, Hu CS, Li XC, Wang JY, Chen SQ, He WD. Rapid UV-radiation synthesis of polyacrylate cryogel oil-sorbents with adaptable structure and performance. ENVIRONMENTAL RESEARCH 2020; 187:109488. [PMID: 32470646 DOI: 10.1016/j.envres.2020.109488] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 03/03/2020] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
Macro-porous poly(lauryl acrylate) cryogel sheets as oil-sorbents were prepared through UV-radiation cryo-polymerizations in 1, 4-dioxane at low temperatures (-5, -2 and 0 °C) within 30 min. The influences of total monomer concentration, crosslinking monomer amount and polymerization temperature on the formation of cryogels were studied. The chemical structure and porous morphology were characterized through the techniques of Fourier transform infrared spectroscopy, thermal gravimetric analysis, contact angle measurement and scanning electron microscopy, confirming the features of high hydrophobicity, macro-porosity and good thermal stability. As well, the comparison between conventional gels prepared at room temperature and cryogels at lower temperatures was made, showing the higher rate of cryo-polymerization than conventional polymerization under the same UV-radiation condition. The swelling investigation was carried out with several organic solvents and oils. Enhanced performance of oil absorption was observed for those cryogels considering the absorption capacity and absorption rate. Variation of initiator amount and acrylate monomers could also modulate the absorption capacity. Those cryogel oil-sorbents exhibited wide adaptability, good reusability and high-temperature tolerance. Thus, this rapid and low-cost fabrication opens out a novel pathway to prepare efficient oil-sorbents used in waste water treatment.
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Affiliation(s)
- Abdul Haleem
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Hui-Juan Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Peng-Yun Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chuan-Shan Hu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xi-Chuan Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jia-Yun Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Sheng-Qi Chen
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui Province Key Laboratory of R&D of Chinese Medicine, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Wei-Dong He
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
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Sun L, Feng X, Zhong T, Zhang X. Preparation of supermacroporous cryogels with improved mechanical strength for efficient purification of lysozyme from chicken egg white. J Sep Sci 2020; 43:3315-3326. [DOI: 10.1002/jssc.202000255] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 06/12/2020] [Accepted: 06/13/2020] [Indexed: 01/22/2023]
Affiliation(s)
- Lifen Sun
- College of Chemistry and Chemical EngineeringYunnan Normal University Kunming P. R. China
| | - Xiyun Feng
- College of Chemistry and Chemical EngineeringYunnan Normal University Kunming P. R. China
| | - Tianyi Zhong
- College of Chemistry and Chemical EngineeringYunnan Normal University Kunming P. R. China
| | - Xufeng Zhang
- College of Chemistry and Chemical EngineeringYunnan Normal University Kunming P. R. China
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31
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Saraswathy K, Agarwal G, Srivastava A. Hyaluronic acid microneedles‐laden collagen cryogel plugs for ocular drug delivery. J Appl Polym Sci 2020. [DOI: 10.1002/app.49285] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Krishnapriya Saraswathy
- Department of Medical deviceNational Institute of Pharmaceutical Education and Research Gandhinagar India
| | - Gopal Agarwal
- Department of BiotechnologyNational Institute of Pharmaceutical Education and Research Gandhinagar India
| | - Akshay Srivastava
- Department of Medical deviceNational Institute of Pharmaceutical Education and Research Gandhinagar India
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Raina DB, Glencross A, Chaher N, Liu Y, Lidgren L, Isaksson H, Tägil M. Synthesis and Characterization of a Biocomposite Bone Bandage for Controlled Delivery of Bone-Active Drugs in Fracture Nonunions. ACS Biomater Sci Eng 2020; 6:2867-2878. [PMID: 33463281 DOI: 10.1021/acsbiomaterials.9b01574] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fracture nonunions are common in orthopedics and their treatment often involves multiple surgical interventions. The aim of this study was to fabricate and characterize a gelatin-nano-hydroxyapatite membrane (GM)-based bone bandage for controlled delivery of bio-active molecules; recombinant human bone morphogenic protein-2 (rhBMP-2) and zoledronic acid (ZA) to promote osteoinduction and prevent callus resorption, respectively. In vitro cell-material interaction experiments using MC3T3 cells seeded on the GM indicated good biocompatibility. rhBMP-2-functionalized GM promoted osteogenic differentiation of MC3T3 cells and the rhBMP-2 bio-activity thus remained, as indicated by increased levels of alkaline phosphatase compared to only GM. The GM released a small amount (1.1%) of rhBMP-2 in vitro over a period of 5 weeks, demonstrating a strong interaction of rhBMP-2 with the GM. In the first animal study, the GM specimens loaded with rhBMP-2 or with the combination of rhBMP-2 + ZA were placed in the abdominal muscle pouch of rats. In the GM + rhBMP-2 + ZA group, significantly higher bone volume (21.5 ± 5.9 vs 2.7 ± 1.0 mm3) and area (3.3 ± 2.3 vs 1.0 ± 0.4 mm2) of bone were observed compared to GM + rhBMP-2 after 4 weeks, as indicated by micro-computed tomography and histomorphometry, respectively. Finally, a nonunion model in rats was used to evaluate the efficacy of the GM bandage and bio-active molecules in healing of fracture nonunions. The GM functionalized with rhBMP-2 + ZA led to higher bone formation around the fracture (63.9 ± 19.0 vs 31.8 ± 3.7 mm3) and stronger fracture callus (110.8 ± 46.8 vs 45.6 ± 17.8 N) compared to the empty controls. However, the overall union rate was only marginally improved. The GM alone or combined with ZA did not aid in bone healing in this model. Thus, this study shows that controlled delivery of rhBMP-2 + ZA via the developed GM is a promising approach that could aid in earlier full load bearing in patients with nonunion.
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Affiliation(s)
- Deepak Bushan Raina
- Faculty of Medicine, Department of Clinical Sciences Lund, Orthopedics, Lund University, Lund 221 85, Sweden
| | - Alexandra Glencross
- Faculty of Medicine, Department of Clinical Sciences Lund, Orthopedics, Lund University, Lund 221 85, Sweden.,Biomedical Engineering, Glasgow University, Glasgow G12 8QQ, U.K
| | - Nadia Chaher
- Faculty of Medicine, Department of Clinical Sciences Lund, Orthopedics, Lund University, Lund 221 85, Sweden.,Biomedical Engineering, Glasgow University, Glasgow G12 8QQ, U.K
| | - Yang Liu
- Faculty of Medicine, Department of Clinical Sciences Lund, Orthopedics, Lund University, Lund 221 85, Sweden
| | - Lars Lidgren
- Faculty of Medicine, Department of Clinical Sciences Lund, Orthopedics, Lund University, Lund 221 85, Sweden
| | - Hanna Isaksson
- Faculty of Medicine, Department of Clinical Sciences Lund, Orthopedics, Lund University, Lund 221 85, Sweden.,Department of Biomedical Engineering, Lund University, Lund 221 00, Sweden
| | - Magnus Tägil
- Faculty of Medicine, Department of Clinical Sciences Lund, Orthopedics, Lund University, Lund 221 85, Sweden
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Loo SL, Vásquez L, Paul UC, Campagnolo L, Athanassiou A, Fragouli D. Solar-Driven Freshwater Generation from Seawater and Atmospheric Moisture Enabled by a Hydrophilic Photothermal Foam. ACS APPLIED MATERIALS & INTERFACES 2020; 12:10307-10316. [PMID: 32058681 PMCID: PMC7997105 DOI: 10.1021/acsami.9b20291] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 02/14/2020] [Indexed: 06/01/2023]
Abstract
The accelerated increase in freshwater demand, particularly among populations displaced in remote locations where conventional water sources and the infrastructure required to produce potable water may be completely absent, highlights the urgent need in creating additional freshwater supply from untapped alternative sources via energy-efficient solutions. Herein, we present a hydrophilic and self-floating photothermal foam that can generate potable water from seawater and atmospheric moisture via solar-driven evaporation at its interface. Specifically, the foam shows an excellent solar-evaporation rate of 1.89 kg m-2 h-1 with a solar-to-vapor conversion efficiency of 92.7% under 1-Sun illumination. The collected water is shown to be suitable for potable use because when synthetic seawater samples (3.5 wt %) are used, the foam is able to cause at least 99.99% of salinity reduction. The foam can also be repeatedly used in multiple hydration-dehydration cycles, consisting of moisture absorption or water collection, followed by solar-driven evaporation; in each cycle, 1 g of the foam can harvest 250-1770 mg of water. To the best of our knowledge, this is the first report of a material that integrates all the desirable properties for solar evaporation, water collection, and atmospheric-water harvesting. The lightweight and versatility of the foam suggest that the developed foams can be a potent solution for water efficiency, especially for off-grid situations.
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Affiliation(s)
- Siew-Leng Loo
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Lía Vásquez
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
- Dipartimento
di Chimica e Chimica Industriale (DCCI), Università degli Studi di Genova, Via Dodecaneso 31, Genoa 16146, Italy
| | - Uttam C. Paul
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
| | - Laura Campagnolo
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
- Dipartimento
di Chimica e Chimica Industriale (DCCI), Università degli Studi di Genova, Via Dodecaneso 31, Genoa 16146, Italy
| | | | - Despina Fragouli
- Smart
Materials, Istituto Italiano di Tecnologia, Via Morego 30, Genova 16163, Italy
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Bakhshpour M, Topcu AA, Bereli N, Alkan H, Denizli A. Poly(Hydroxyethyl Methacrylate) Immunoaffinity Cryogel Column for the Purification of Human Immunoglobulin M. Gels 2020; 6:E4. [PMID: 32013072 PMCID: PMC7151037 DOI: 10.3390/gels6010004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 01/24/2020] [Accepted: 01/27/2020] [Indexed: 12/12/2022] Open
Abstract
Human immunoglobulin M (hIgM) antibodies are considered as hopeful tools for diseases therapy. Therefore, chromatography approaches are used to purify hIgM with a single step. In this study, we prepared a poly(hydroxyethyl methacrylate) based immunoaffinity p(HEMA-I) cryogel column by using cyanamide to immobilize antihuman immunoglobulin on the p(HEMA) cryogel for purification of hIgM in aqueous solution and artificial human plasma. The characterization of the p(HEMA) cryogel column was performed by using a scanning electron microscope (SEM), micro-computerized tomography (µ-CT), Fourier transform infrared spectroscopy (FTIR), swelling degree and macro-porosity. Further, the optimizations of various parameters were performed such as, pH, ionic strength, temperature and concentration of hIgM in aqueous solutions. In addition, the Langmuir adsorption model was supported by experimental results. Maximum adsorbed amount of hIgM corresponded to 11.1 mg/g at pH 5.75 [morpholino ethanesulfonic acid (MES buffer)]. Our results indicated that the p(HEMA-I) cryogel column can be reused at least 10 times without significant loss in adsorption capacity. As a natural source, artificial human plasma was selected for hIgM adsorption and the purity of hIgM was evaluated using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE).
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Affiliation(s)
- Monireh Bakhshpour
- Department of Chemistry, Biochemistry Division, Hacettepe University, 06800 Ankara, Turkey; (M.B.); (N.B.)
| | - Aykut Arif Topcu
- Department of Chemistry, Aksaray University, 68100 Aksaray, Turkey;
| | - Nilay Bereli
- Department of Chemistry, Biochemistry Division, Hacettepe University, 06800 Ankara, Turkey; (M.B.); (N.B.)
| | - Huseyin Alkan
- Department of Chemistry, Dicle University, 21280 Diyarbakır, Turkey;
| | - Adil Denizli
- Department of Chemistry, Biochemistry Division, Hacettepe University, 06800 Ankara, Turkey; (M.B.); (N.B.)
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García Schejtman SD, Marzini Irranca S, Alvarez Igarzabal CI, Martinelli M. Redefining the chemistry of super-macroporous materials: when dendritic molecules meet polymer cryogels. Polym Chem 2020. [DOI: 10.1039/d0py00542h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dendritic cryogels modify the functionality and properties against conventional cryogels and improve the Immunoglobulin G (IgG) adsorption.
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Affiliation(s)
- Sergio D. García Schejtman
- Universidad Nacional de Córdoba
- Facultad de Ciencias Químicas
- Laboratorio de Materiales Poliméricos (LaMaP)
- Córdoba
- Argentina
| | - Santiago Marzini Irranca
- Universidad Nacional de Córdoba
- Facultad de Ciencias Químicas
- Laboratorio de Materiales Poliméricos (LaMaP)
- Córdoba
- Argentina
| | - Cecilia I. Alvarez Igarzabal
- Universidad Nacional de Córdoba
- Facultad de Ciencias Químicas
- Laboratorio de Materiales Poliméricos (LaMaP)
- Córdoba
- Argentina
| | - Marisa Martinelli
- Universidad Nacional de Córdoba
- Facultad de Ciencias Químicas
- Laboratorio de Materiales Poliméricos (LaMaP)
- Córdoba
- Argentina
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36
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Kavousi F, Nikfarjam N. Highly interconnected macroporous structures made from starch nanoparticle-stabilized medium internal phase emulsion polymerization for use in cell culture. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121744] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Mourão CA, Marcuz C, Haupt K, Bueno SMA. Polyacrylamide-alginate (PAAm-Alg) and phospho-L-tyrosine-linked PAAm-Alg monolithic cryogels: Purification of IgG from human serum. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1129:121783. [DOI: 10.1016/j.jchromb.2019.121783] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/30/2019] [Accepted: 09/03/2019] [Indexed: 01/09/2023]
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38
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Charged groups synergically enhanced elasticity and tunable swelling/shrinking of poly(dialkylaminoethyl methacrylate)/layered silicate nanocomposite cryogels. POLYMER 2019. [DOI: 10.1016/j.polymer.2019.121627] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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39
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Erol B, Erol K, Gökmeşe E. The effect of the chelator characteristics on insulin adsorption in immobilized metal affinity chromatography. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.05.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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40
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Demirci S, Silan C, Sahiner N. Graphene oxide embedded P(AAm)/PANI cryogel polymer composites for sensor application against pesticide, nitro compound, and organic dyes. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2019. [DOI: 10.1080/10601325.2019.1612254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Sahin Demirci
- Faculty of Science & Arts, Department of Chemistry, Canakkale Onsekiz Mart University, Çanakkale, Turkey
- Nanoscience and Technology Research and Application Center (NTRAC), Canakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Coskun Silan
- Nanoscience and Technology Research and Application Center (NTRAC), Canakkale Onsekiz Mart University, Çanakkale, Turkey
- School of Medicine, Department of Pharmacology, Canakkale Onsekiz Mart University, Terzioglu Campus, Çanakkale, Turkey
| | - Nurettin Sahiner
- Faculty of Science & Arts, Department of Chemistry, Canakkale Onsekiz Mart University, Çanakkale, Turkey
- Nanoscience and Technology Research and Application Center (NTRAC), Canakkale Onsekiz Mart University, Çanakkale, Turkey
- Department of Ophthalmology, University of South Florida, Tampa, Florida, USA
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41
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Uzunoğlu G, Çimen D, Bereli N, Çetin K, Denizli A. Cholesterol removal from human plasma with biologically modified cryogels. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2019; 30:1276-1290. [PMID: 31156065 DOI: 10.1080/09205063.2019.1627652] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
In this study, low molecular weight heparin immobilized P(HEMA) cryogels were fabricated for the removal of LDL-C in hypercholesterolemic human plasma. After characterization studies for P(HEMA) cryogels, effects of the parameters including medium pH, CNBr concentration, heparin concentration and contact time on heparin immobilization were investigated. Blood compatibility and cell adhesion tests were also performed, and platelet and leucocyte loss for P(HEMA)-Hp cryogels were found to be 2.95% and 4.91%, respectively. Maximum adsorption capacity for LDL-C from hypercholesterolemic human plasma was found to be 26.7 mg/g for P(HEMA)-Hp cryogel while it was only 1.67 mg/g for bare P(HEMA) cryogel. The P(HEMA)-Hp cryogels exhibit high desorption ratios up to 96% after 10 adsorption-desorption cycles with no significant decrease in the adsorption capacity. The findings indicated that these reusable P(HEMA)-based cryogels proposed good alternative adsorbents for removal of LDL-C.
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Affiliation(s)
- Gizem Uzunoğlu
- a Biochemistry Division, Department of Chemistry , Hacettepe University , Ankara , Turkey
| | - Duygu Çimen
- a Biochemistry Division, Department of Chemistry , Hacettepe University , Ankara , Turkey
| | - Nilay Bereli
- a Biochemistry Division, Department of Chemistry , Hacettepe University , Ankara , Turkey
| | - Kemal Çetin
- b Biochemistry Division, Department of Chemistry, Faculty of Science , Necmettin Erbakan University , Konya , Turkey
| | - Adil Denizli
- a Biochemistry Division, Department of Chemistry , Hacettepe University , Ankara , Turkey
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42
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Zhang H, Liu C, Chen L, Dai B. Control of ice crystal growth and its effect on porous structure of chitosan cryogels. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.02.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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43
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Zvukova ND, Klimova TP, Ivanov RV, Ryabev AN, Tsiskarashvili AV, Lozinsky VI. Cryostructuring of Polymeric Systems. 52. Properties, Microstructure and an Example of a Potential Biomedical Use of the Wide-Pore Alginate Cryostructurates. Gels 2019; 5:E25. [PMID: 31075923 PMCID: PMC6630887 DOI: 10.3390/gels5020025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/07/2019] [Accepted: 05/07/2019] [Indexed: 12/29/2022] Open
Abstract
Wide-pore cryostructurates were prepared via freezing sodium alginate aqueous solutions with subsequent ice sublimation from the frozen samples, followed by their incubation in the ethanol solutions of calcium chloride or sulfuric acid, rinsing, and final drying. Such sequence of operations resulted in the calcium alginate or alginic acid sponges, respectively. The swelling degree of the walls of macropores in such matrices decreased with increasing polymer concentration in the initial solution. The dependence of the degree of swelling on the cryogenic processing temperature had a bell-like character with a maximum for the samples formed at -20 °C. According to 1H NMR spectroscopy, the content of mobile (non-frozen) water in the frozen water-sodium alginate systems also depended on the initial polymer concentration and freezing temperature. The cryostructurates obtained did not lose their integrity in water, saline, in an acidic medium at pH 2 for at least three weeks. Under alkaline conditions at pH 12 the first signs of dissolution of the Ca-alginate sponge arose only after a week of incubation. Microbiological testing of the model depot form of the antibiotics entrapped in the Ca-alginate cryostructurate demonstrated the efficiency of this system as the antibacterial material.
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Affiliation(s)
- Natalia D Zvukova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia.
| | - Tamara P Klimova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia.
| | - Roman V Ivanov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia.
| | - Andrei N Ryabev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia.
| | - Archil V Tsiskarashvili
- N.N. Priorov National Medical Research Center of Traumatology and Orthopedics, Ministry of Health of the Russian Federation, Priorov Street, 10., 127299 Moscow, Russia.
| | - Vladimir I Lozinsky
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street, 28, 119991 Moscow, Russia.
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44
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Zhao S, Zou Y, Wang Y, Zhang H, Liu X. Organized cryogel composites with 3D hierarchical porosity as an extraction adsorbent for nucleosides. J Sep Sci 2019; 42:2140-2147. [PMID: 30977587 DOI: 10.1002/jssc.201900174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 04/06/2019] [Accepted: 04/09/2019] [Indexed: 12/13/2022]
Abstract
Macroscopic monoliths are highly desirable in many fields of application. Herein, well organized organic-inorganic cryogel composite with a three-dimensional hierarchical meso- and macroporous structure are presented, which were produced by in situ copolymerization of mesoporous multifunctional silica (size: 1-20 μm; pore: 2-20 nm mostly) and monomers (hydroxyethyl methacrylate and diallyldimethylammonium chloride) in water below the freezing point. This copolymerization method effectively adjusted the macropores of the basic cryogel, and the nanosilica was more homogeneously dispersed in the basic cryogel. The specific surface area of the cryogel composite was increased 17 times versus than that of the basic cryogel. The abundant meso- and macroporous pores on the cryogel composite provided sufficient reactive sites favorable for the efficient mass transport of target compounds. When the cryogel composite, as solid phase extraction adsorbent, was coupled with high-performance liquid chromatography, an analytical tool, the nucleosides were quantified with good selectivity, lower detection limits (0.9-1.3 ng/mL) and satisfactory recoveries of greater than 80% from spiked human serum.
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Affiliation(s)
- Shuling Zhao
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China
| | - Yulin Zou
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China
| | - Yaya Wang
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China
| | - Haixia Zhang
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China
| | - Xiaoyan Liu
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, P. R. China
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45
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Saylan Y, Denizli A. Supermacroporous Composite Cryogels in Biomedical Applications. Gels 2019; 5:E20. [PMID: 30999704 PMCID: PMC6630583 DOI: 10.3390/gels5020020] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/10/2019] [Accepted: 04/11/2019] [Indexed: 01/29/2023] Open
Abstract
Supermacroporous gels, called cryogels, are unique scaffolds that can be prepared by polymerization of monomer solution under sub-zero temperatures. They are widely used in many applications and have significant potential biomaterials, especially for biomedical applications due to their inherent interconnected supermacroporous structures and easy formation of composite polymers in comparison to other porous polymer synthesis techniques. This review highlights the fundamentals of supermacroporous cryogels and composite cryogels, and then comprehensively summarizes recent studies in preparation, functionalization, and utilization with mechanical, biological and physicochemical features, according to the biomedical applications. Furthermore, conclusions and outlooks are discussed for the use of these promising and durable supermacroporous composite cryogels.
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Affiliation(s)
- Yeşeren Saylan
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey.
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, 06800 Ankara, Turkey.
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46
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Memic A, Colombani T, Eggermont LJ, Rezaeeyazdi M, Steingold J, Rogers ZJ, Navare KJ, Mohammed HS, Bencherif SA. Latest Advances in Cryogel Technology for Biomedical Applications. ADVANCED THERAPEUTICS 2019. [DOI: 10.1002/adtp.201800114] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Adnan Memic
- Center of NanotechnologyKing Abdulaziz University Jeddah 21589 Saudi Arabia
- Center for Biomedical EngineeringDepartment of MedicineBrigham and Women's HospitalHarvard Medical School Cambridge MA 02139 USA
- Department of Chemical EngineeringNortheastern University Boston MA 02115 USA
| | - Thibault Colombani
- Department of Chemical EngineeringNortheastern University Boston MA 02115 USA
| | - Loek J. Eggermont
- Department of Chemical EngineeringNortheastern University Boston MA 02115 USA
- Department of Tumor ImmunologyOncode Institute, Radboud Institute for Molecular Life SciencesRadboud University Medical Center Nijmegen 6500 The Netherlands
| | | | - Joseph Steingold
- Department of Pharmaceutical SciencesNortheastern University Boston MA 02115 USA
| | - Zach J. Rogers
- Department of Chemical EngineeringNortheastern University Boston MA 02115 USA
| | | | | | - Sidi A. Bencherif
- Department of Chemical EngineeringNortheastern University Boston MA 02115 USA
- Department of BioengineeringNortheastern University Boston MA 02115 USA
- Harvard John A. Paulson School of Engineering and Applied SciencesHarvard University Cambridge MA 02138 USA
- Sorbonne UniversityUTC CNRS UMR 7338Biomechanics and Bioengineering (BMBI)University of Technology of Compiègne Compiègne 60159 France
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47
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Ceylan Tuncaboylu D, Yıldırım TS. Dimethylacrylamide gels linked by dimethacrylate cross-linkers. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2660-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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48
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Mapping Nanoparticles in Hydrogels: A Comparison of Preparation Methods for Electron Microscopy. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8122446] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The distribution of noble metal nanoparticles (NMNPs) in hydrogels influences their nanoplasmonic response and signals used for biosensor purposes. By controlling the particle distribution in NMNP-nanocomposite hydrogels, it is possible to obtain new nanoplasmonic features with new sensing modalities. Particle positions can be characterized by using volume-imaging methods such as the focused ion beam-scanning electron microscope (FIB-SEM) or the serial block-face scanning electron microscope (SBFSEM) techniques. The pore structures in hydrogels are contained by the water absorbed in the polymer network and may pose challenges for volume-imaging methods based on electron microscope techniques since the sample must be in a vacuum chamber. The structure of the hydrogels can be conserved by choosing appropriate preparation methods, which also depends on the composition of the hydrogel used. In this paper, we have prepared low-weight-percentage hydrogels, with and without gold nanorods (GNRs), for conventional scanning electron microscope (SEM) imaging by using critical point drying (CPD) and hexamethyldisilazane (HMDS) drying. The pore structures and the GNR positions in the hydrogel were characterized. The evaluation of the sample preparation techniques elucidate new aspects concerning the drying of hydrogels for SEM imaging. The results of identifying GNRs positioned in a hydrogel polymer network contribute to the development of mapping metal particle positions with volume imaging methods such as FIB-SEM or SBFSEM for studying nanoplasmonic properties of NMNP-nanocomposite hydrogels.
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Wang L, Deng F, Wang W, Li A, Lu C, Chen H, Wu G, Nan K, Li L. Construction of Injectable Self-Healing Macroporous Hydrogels via a Template-Free Method for Tissue Engineering and Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2018; 10:36721-36732. [PMID: 30261143 DOI: 10.1021/acsami.8b13077] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Because of their ease of handling and excellent biocompatibility, injectable macroporous hydrogels have received a considerable interest in the fields of tissue engineering and drug delivery systems because of their unique application in minimally invasive surgical procedures. In this study, in situ forming, injectable, macroporous, self-healing gelatin (GE)/oxidized alginate (OSA)/adipic acid dihydrazide (ADH) hydrogels were prepared using a high-speed shearing treatment and were stabilized by Schiff base reaction and acylhydrazone bonds. Their injectability, self-healing ability, rheology, microstructure, equilibrium water content, and in vitro biodegradation were investigated. We found that the injectable GE/OSA/ADH precursors remained in a liquid form and flowed easily for several minutes at room temperature, but however, gelled rapidly at body temperature. The gelation time could be regulated by varying the ratio of GE, OSA, and ADH. The obtained hydrogels had an interconnected macroporous structure and self-healing ability. The porosity of hydrogels was in the range of approximately 60-83%, and pore size varied from approximately 125-380 μm. The porous structure of hydrogel was visualized by field-emission scanning electron microscope, micro-computed tomography, and laser confocal microscope. Human epidermal growth factor was loaded by in situ mixing in GE/OSA/ADH hydrogels and was released with good bioactivity as evaluated by ELISA. Moreover, L929 cells proliferated on GE/OSA/ADH hydrogels, as verified by Cell Counting Kit-8 and LIVE/DEAD assays. Furthermore, encapsulation of NIH 3T3 cells within GE/OSA/ADH hydrogels demonstrated that the hydrogel can support cell survival, proliferation, and migration. In vivo studies showed that the hydrogels had a good injectability, in situ gelation, and tissue biocompatibility. Therefore, GE/OSA/ADH hydrogel represented a novel and safe injectable macroporous self-healing hydrogel for tissue engineering scaffold and drug delivery vehicle purposes.
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Affiliation(s)
- Lei Wang
- Eye Hospital, School of Opthalmology & Optometry , Wenzhou Medical University , Zhejiang Province 325000 China
- Wenzhou Institute of Biomaterials and Engineering , Wenzhou Medical University , Zhejiang Province 325000 , China
| | - Fen Deng
- Eye Hospital, School of Opthalmology & Optometry , Wenzhou Medical University , Zhejiang Province 325000 China
| | - Wenwen Wang
- Wenzhou Hospital of Integrated Traditional and Western Medicine , Wenzhou 325000 , China
| | - Afeng Li
- Eye Hospital, School of Opthalmology & Optometry , Wenzhou Medical University , Zhejiang Province 325000 China
| | - Conglie Lu
- Eye Hospital, School of Opthalmology & Optometry , Wenzhou Medical University , Zhejiang Province 325000 China
| | - Hao Chen
- Eye Hospital, School of Opthalmology & Optometry , Wenzhou Medical University , Zhejiang Province 325000 China
| | - Gang Wu
- Department of Oral Implantology and Prosthetic Dentistry, Academic Centre for Dentistry Amsterdam (ACTA) , Vrije Universiteit Amsterdam and University of Amsterdam , NL-1081 LA Amsterdam , The Netherlands
| | - Kaihui Nan
- Eye Hospital, School of Opthalmology & Optometry , Wenzhou Medical University , Zhejiang Province 325000 China
| | - Lingli Li
- Eye Hospital, School of Opthalmology & Optometry , Wenzhou Medical University , Zhejiang Province 325000 China
- Wenzhou Institute of Biomaterials and Engineering , Wenzhou Medical University , Zhejiang Province 325000 , China
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Singh A, Shiekh PA, Das M, Seppälä J, Kumar A. Aligned Chitosan-Gelatin Cryogel-Filled Polyurethane Nerve Guidance Channel for Neural Tissue Engineering: Fabrication, Characterization, and In Vitro Evaluation. Biomacromolecules 2018; 20:662-673. [DOI: 10.1021/acs.biomac.8b01308] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Anamika Singh
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, 208016 Uttar Pradesh, India
| | - Parvaiz A. Shiekh
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, 208016 Uttar Pradesh, India
| | - Mainak Das
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, 208016 Uttar Pradesh, India
| | - Jukka Seppälä
- Department of Chemical and Metallurgical Engineering, School of Chemical Engineering, Aalto University, Helsinki, Finland
| | - Ashok Kumar
- Department of Biological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, 208016 Uttar Pradesh, India
- Centre for Environmental Science and Engineering & Centre for Nanosciences, Indian Institute of Technology Kanpur, Kanpur, 208016 Uttar Pradesh, India
- Department of Chemical and Metallurgical Engineering, School of Chemical Engineering, Aalto University, Helsinki, Finland
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