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Baglamis S, Feyzioğlu-Demir E, Akgöl S. New insight into anti-wrinkle treatment: Using nanoparticles as a controlled release system to increase acetyl octapeptide-3 efficiency. Polym Bull (Berl) 2023. [DOI: 10.1007/s00289-022-04663-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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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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Perçin I, Aracagök YD, Idil N, Denizli A, Mattiasson B. Laccase bound to cryogel functionalized with phenylalanine for the decolorization of textile dyes. Turk J Chem 2021; 45:1353-1365. [PMID: 34849053 PMCID: PMC8596530 DOI: 10.3906/kim-2106-16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 08/11/2021] [Indexed: 11/03/2022] Open
Abstract
In this study, amino acid functionalized poly(2-hydroxyethyl methacrylate-N-methacrylolyl-l-phenylalanine) [PHEMAPA] cryogel discs were prepared. In this respect, phenylalanine containing N-methacryloyl-(L)-phenylalanine methyl ester (MAPA) was polymerized with 2-hydroxyethyl methacrylate (HEMA) without requirement of any activation step. Laccase bound poly(2-hydroxyethyl methacrylate-N-methacryloyl-l-phenylalanine) [Lac-PHEMAPA] cryogel discs were applied for decolorization of Reactive Blue-247 (RB-247). The ability of Lac-PHEMAPA cryogel discs on dye decolorization was found to be as 90% in 2 h and even more within 4h. The decolorization activities of 86% and 73% were observed at relatively low (4°C) and high (60°C) temperatures, respectively. The effect of dye concentration on dye decolorization and 100% decolorization activity was achieved in dye concentration between 50-300 ppm. Lac-PHEMAPA cryogel discs maintained 80% of its decolorization activity after six cycles. Consequently, the PHEMAPA cryogel discs are promising materials for immobilizing laccase. The Lac-PHEMAPA has a rapid dye decolorization in a broad range of temperature. The preparation is furthermore very stable and activity is preserved during storage.
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Affiliation(s)
- Işık Perçin
- Department of Biology, Molecular Biology Division, Faculty of Science, Hacettepe University, Ankara Turkey
| | - Yusuf Doruk Aracagök
- Department of Biology, Biotechnology Division, Faculty of Science, Hacettepe University, Ankara Turkey
| | - Neslihan Idil
- Department of Biology, Biotechnology Division, Faculty of Science, Hacettepe University, Ankara Turkey
| | - Adil Denizli
- Department of Chemistry, Biochemistry Division, Faculty of Science, Hacettepe University, Ankara Turkey
| | - Bo Mattiasson
- Division of Biotechnology, Lund University, Lund Sweden
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Cibacron blue F3GA incorporated immobilized metal chelate affinity sorbent as a high efficient affinity immobilization materials for catalase enzyme. Colloids Surf B Biointerfaces 2021; 206:111911. [PMID: 34147926 DOI: 10.1016/j.colsurfb.2021.111911] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/31/2021] [Accepted: 06/06/2021] [Indexed: 11/21/2022]
Abstract
Catalase is a metalloenzyme commonly found in almost all plant and animal tissues and catalyzes the conversion of hydrogen peroxide to less reactive molecules. It is used for the elimination of hydrogen peroxide in biological, biomedical, food and textile applications. For this purpose, a novel affinity sorbent [poly(methacrylic acid- N-isopropyl acrylamide-CB-Fe3+, (p(MAA-NIPAAM)-CB-Fe3+)] for the determination and it was first developed using MAA and NIPAAM monomers. After characterization with Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), X-ray Photoelectron Spectroscopy (XPS), adsorption parameters were determined. Reusability of p(MAA-NIPAAM)-CB-Fe3+ sorbent was determined after by determining the appropriate desorption agent for desorption of adsorbed catalase in the developed sorbent. It was determined that catalase adsorption could be performed with 0.01 g of sorbent in 45 min. The maximum adsorption capacity for catalase adsorption was determined as 243.17 mg/g with the use of sorbent. The operational and storage stability of the immobilized catalase was found to be high as expected. The conversion of H2O2 can be successfully performed by the immobilized enzyme in the prepared sorbent. It has been proven that the affinity of catalase for its substrate is increased by immobilization.
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Diken Gür S, Bakhshpour M, Bereli N, Denizli A. Antibacterial effect against both Gram-positive and Gram-negative bacteria via lysozyme imprinted cryogel membranes. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2021; 32:1024-1039. [PMID: 33704023 DOI: 10.1080/09205063.2021.1892472] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The development of novel biocompatible and cost effective cryogel membrane which shows enhanced antimicrobial properties in order to use for several approaches such as wound dressing, scaffold or food packaging was aimed in this study. A super macro porous lysozyme imprinted cryogel membranes showing antibacterial effect against both Gram-positive and Gram-negative bacteria were prepared by using molecular imprinting technique. N-methacryloyl-(L)-histidine methyl ester (MAH) was used as the pseudo specific ligand and complexed with Cu++ in order to provide metal ion coordination between MAH and template molecule (lysozyme). Comparing the antibacterial activity of different lysozyme concentrations, cryogel membranes were prepared in three different concentrations. To synthesize Poly (hydroxyethyl methacrylate-N-methacryloyl-(L)-histidine methylester) P(HEMA-MAH) cryogel membrane, free radical polymerization initiated by N, N, N', N'-tetramethylene diamine (TEMED) and ammonium persulfate (APS) was carried out at -12 °C. The characterization of the lysozyme imprinted cryogel membrane was accomplished by using scanning electron microscopy (SEM), swelling degree measurements and Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR) spectroscopy. The cytotoxicity test of produced membrane was performed by using mouse fibroblast cell line L929. The antibacterial activity of P(HEMA-MAH) lysozyme molecular imprinted [P(HEMA-MAH) Lyz-MIP] cryogel membranes against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) were determined by Kirby-Bauer membranes diffusion and viable cell counting methods. When the antibacterial effect of P(HEMA-MAH) Lyz-MIP cryogel membranes were evaluated, it was found that P(HEMA-MAH) Lyz-MIP cryogel membranes had stronger antibacterial effects against Gram-negative E. coli bacteria even in low lysozyme concentrations. In addition, 100% bacterial inhibition was detected for both of two bacteria at increasing lysozyme concentrations.
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Affiliation(s)
| | | | - Nilay Bereli
- Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Adil Denizli
- Department of Chemistry, Hacettepe University, Ankara, Turkey
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Yavaşer R, Karagözler AA. Reactive Green 5-Decorated Polyacrylamide/Chitosan Cryogel: An Affinity Matrix for Catalase. Appl Biochem Biotechnol 2020; 192:1191-1206. [PMID: 32705520 DOI: 10.1007/s12010-020-03393-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/16/2020] [Indexed: 12/19/2022]
Abstract
Acrylamide/chitosan-based cryogel was fabricated, and a triazine dye, Reactive Green 5, was attached to the cryogel by nucleophilic substitution to build a dye affinity support for adsorption of catalase enzyme. Characterization of cryogel was performed using FTIR, SEM, EDX, BET, and swelling test. Synthesized cryogel beared pores with ~ 200 μm in size and the surface area of 11.8 m2/g. Maximum catalase adsorption was (17.6 ± 0.29 mg/g) measured at pH 4.0 and 25 °C. The adsorption sites on the cryogel were saturated at 0.75 mg/mL enzyme concentration. Increased ionic strength caused a decrease in adsorption capacity. Desorption of catalase from cryogel was enabled using 0.5 M NaSCN solution. Consecutive adsorption experiments were carried out fifteen times to evaluate the reusability of the cryogel. Thermal, storage, and operational stabilities of immobilized catalase were higher than the free one. The data produced implicate that catalase-adsorbed dye-affinity cryogel may be used for H2O2 detection or removal when necessary. Graphical Abstract.
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Affiliation(s)
- Rukiye Yavaşer
- Chemistry Department, Faculty of Arts and Sciences, Aydın Adnan Menderes University, 09010, Aydın, Turkey.
| | - Arife Alev Karagözler
- Chemistry Department, Faculty of Arts and Sciences, Aydın Adnan Menderes University, 09010, Aydın, Turkey
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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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Bakhshpour M, Yavuz H, Denizli A. Controlled release of mitomycin C from PHEMAH-Cu(II) cryogel membranes. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:946-954. [PMID: 29457925 DOI: 10.1080/21691401.2018.1439840] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Molecular imprinting technique was used for the preparation of antibiotic and anti-neoplastic chemotherapy drug (mitomycin C) imprinted cryogel membranes (MMC-ICM). The membranes were synthezied by using metal ion coordination interactions with N-methacryloyl-(l)-histidine methyl ester (MAH) functional monomer and template molecules (i.e. MMC). The 2-hydroxyethyl methacrylate (HEMA) monomer and methylene bisacrylamide (MBAAm) crosslinker were used for the preparation of mitomycin C imprinted cryogel membranes by radical suspension polymerization technique. The imprinted cryogel membranes were characterized by scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR) and swelling degree measurements. Cytotoxicity of MMC-ICMs was investigated using mouse fibroblast cell line L929. Time-dependent release of MMC was demonstrated within 150 h from cryogel membranes. Cryogels demonstrated very high MMC loading efficiency (70-80%) and sustained MMC release over hours.
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Affiliation(s)
| | - Handan Yavuz
- a Department of Chemistry , Hacettepe University , Ankara , Turkey
| | - Adil Denizli
- a Department of Chemistry , Hacettepe University , Ankara , Turkey
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Capacitive Biosensors and Molecularly Imprinted Electrodes. SENSORS 2017; 17:s17020390. [PMID: 28218689 PMCID: PMC5336051 DOI: 10.3390/s17020390] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 01/16/2017] [Accepted: 02/08/2017] [Indexed: 01/05/2023]
Abstract
Capacitive biosensors belong to the group of affinity biosensors that operate by registering direct binding between the sensor surface and the target molecule. This type of biosensors measures the changes in dielectric properties and/or thickness of the dielectric layer at the electrolyte/electrode interface. Capacitive biosensors have so far been successfully used for detection of proteins, nucleotides, heavy metals, saccharides, small organic molecules and microbial cells. In recent years, the microcontact imprinting method has been used to create very sensitive and selective biorecognition cavities on surfaces of capacitive electrodes. This chapter summarizes the principle and different applications of capacitive biosensors with an emphasis on microcontact imprinting method with its recent capacitive biosensor applications.
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Öncel P, Çetin K, Topçu AA, Yavuz H, Denizli A. Molecularly imprinted cryogel membranes for mitomycin C delivery. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 28:519-531. [PMID: 28105892 DOI: 10.1080/09205063.2017.1282772] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this study, cryogel-based implantable molecularly imprinted drug delivery systems were designed for the delivery of antineoplastic agent. Mitomycin C imprinted poly(2-hydroxyethyl methacrylate-N-methacryloyl-l-glutamic acid) cryogel membranes were produced by free-radical bulk polymerization under partially frozen conditions. The membranes were characterized by swelling tests, Fourier transform infrared spectroscopy, scanning electron microscopy, surface area measurements and in vitro hemocompatibility tests. In vitro delivery studies were carried out to examine the effects of cross-linker ratio and template content. Mitomycin C imprinted cryogel membranes have megaporous structure (10-100 μm in diameter). The cumulative release of mitomycin C was decreased with increasing cross-linking agent ratio and increased with the amount of template in the cryogel structure. The nature of transport mechanism of the mitomycin C from the membranes was non-Fickian.
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Affiliation(s)
- Pınar Öncel
- a Bioengineering Division , Hacettepe University , Ankara , Turkey
| | - Kemal Çetin
- b Biochemistry Division, Department of Chemistry , Hacettepe University , Ankara , Turkey
| | - Aykut Arif Topçu
- c Department of Chemistry , Aksaray University , Aksaray , Turkey
| | - Handan Yavuz
- b Biochemistry Division, Department of Chemistry , Hacettepe University , Ankara , Turkey
| | - Adil Denizli
- b Biochemistry Division, Department of Chemistry , Hacettepe University , Ankara , Turkey
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