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Tadjine M, Bouzidi F, Berbri A, Nehmar H, Bouhekka A. In situ Fourier transform infrared-attenuated total reflection spectroscopy and modeling investigation of protein adsorption: Case of expanded bovine serum albumin on titanium dioxide anatase. Biointerphases 2024; 19:011001. [PMID: 38214353 DOI: 10.1116/6.0003020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 12/14/2023] [Indexed: 01/13/2024] Open
Abstract
The purpose of this experimental and modeling research is to study the pH effect and to determine the surface coverage plus the adsorption constant (Ka) of bovine serum albumin (BSA) protein adsorbed on TiO2 anatase surface, respectively. In situ Fourier transform infrared-attenuated total reflection spectroscopy in a flow-through cell was used to study the BSA adsorption on porous TiO2 anatase films. The experiments were performed in water solution, under different pH values, at a concentration of 10-6 mol/l. Theoretically, we extended the two-state model, based on a system of coupled differential equations, by adding a desorption parameter Kd2, for unfolded state. The model was solved taking into account the adsorption (Ka), desorption (Kd1,2), transformation (Kf) coefficients, and the initial solution protein concentration (C0). The findings clearly illustrated that the solution pH drastically changed the behavior of BSA adsorption, whereas the mathematical analytical solutions allowed us to determine the native state (θ1), the unfolded state (θ2), and the full one (θ) surface coverages. Finally, a good application of the approximated model on the experimental work, expanded BSA adsorbed on TiO2 anatase at pH = 1.7, indicated a value of Ka = (408.36 ± 0.996) × 102 mol-1 l min-1.
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Affiliation(s)
- Moustafa Tadjine
- Department of Physics, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.B. 78 C, National Road No. 19, Ouled Fares, 02180 Chlef, Algeria
- Theoretical Physics and Material Physics Laboratory, Hassiba Benbouali University of Chlef, P.B. 151, Hay Salem, National Road No. 19, 02000 Chlef, Algeria
| | - Fatima Bouzidi
- Department of Physics, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.B. 78 C, National Road No. 19, Ouled Fares, 02180 Chlef, Algeria
- Laboratory of Mechanics and Energy, Hassiba Benbouali University of Chlef, P.B. 151, Hay Salem, National Road No. 19, 02000 Chlef, Algeria
| | - Abderrezak Berbri
- Department of Physics, Faculty of Exact Sciences and Informatics, Hassiba Benbouali University of Chlef, P.B. 78 C, National Road No. 19, Ouled Fares, 02180 Chlef, Algeria
| | - Hamid Nehmar
- Laboratoire de Physique des Couches Minces et Matériaux pour l'Electronique -LPCMME Université Oran 1 Ahmed Ben Bella, B.P. 1524, El M'naouar 31100 Oran, Algeria
| | - Ahmed Bouhekka
- Laboratoire de Physique des Couches Minces et Matériaux pour l'Electronique -LPCMME Université Oran 1 Ahmed Ben Bella, B.P. 1524, El M'naouar 31100 Oran, Algeria
- Department of Matter Sciences, Faculty of Sciences and Technology, Tissemsilt University, P.B. 182, 38000 Tissemsilt, Algeria
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Kim TH, Song Z, Jung J, Sung JS, Kang MJ, Shim WB, Lee M, Pyun JC. Functionalized Parylene Films for Enhancement of Antibody Production by Hybridoma Cells. ACS APPLIED BIO MATERIALS 2023; 6:3726-3738. [PMID: 37647153 DOI: 10.1021/acsabm.3c00417] [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] [Indexed: 09/01/2023]
Abstract
In this study, the influence of microenvironments on antibody production of hybridoma cells was analyzed using six types of functionalized parylene films, parylene-N and parylene-C (before and after UV radiation), parylene-AM, and parylene-H, and using polystyrene as a negative control. Hybridoma cells were cultured on modified parylene films that produced a monoclonal antibody against the well-known fungal toxin ochratoxin-A. Surface properties were analyzed for each parylene film, such as roughness, chemical functional groups, and hydrophilicity. The proliferation rate of the hybridoma cells was observed for each parylene film by counting the number of adherent cells, and the total amount of produced antibodies from different parylene films was estimated using indirect ELISA. In comparison with the polystyrene, the antibody-production by parylene-H and parylene-AM was estimated to be observed to be as high as 210-244% after the culture of 24 h. These results indicate that the chemical functional groups of the culture plate could influence antibody production. To analyze the influence of the microenvironments of the modified parylene films, we performed cell cycle analysis to estimate the ratio of the G0/G1, S, and G2/M phases of the hybridoma cells on each parylene film. From the normalized proportion of phases of the cell cycle, the difference in antibody production from different surfaces was considered to result from the difference in the proliferation rate of hybridoma cells, which occurred from the different physical and chemical properties of the parylene films. Finally, protein expression was analyzed using an mRNA array to determine the effect of parylene films on protein expression in hybridoma cells. The expression of three antibody production-related genes (CD40, Sox4, and RelB) was analyzed in hybridoma cells cultured on modified parylene films.
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Affiliation(s)
- Tae-Hun Kim
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Zhiquan Song
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Jaeyong Jung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Jeong-Soo Sung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, South Korea
| | - Min-Jung Kang
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology (KIST), Seoul 02792, South Korea
| | - Won-Bo Shim
- Department of Food Science and Technology & Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, Gyeongnam 52828, South Korea
| | - Misu Lee
- Division of Life Sciences, College of Life Science and Bioengineering and △Institute for New Drug Development, College of Life Science and Bioengineering, Incheon National University, Incheon 22012, South Korea
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-gu, Seoul 03722, South Korea
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Surface Functionalization and Bonding of Chemically Inert Parylene Microfluidics Using Parylene-A Adhesive Layer. BIOCHIP JOURNAL 2022. [DOI: 10.1007/s13206-022-00050-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ma Y, Tonelli M, Unsworth LD. Effect of carbamylation on protein structure and adsorption to self-assembled monolayer surfaces. Colloids Surf B Biointerfaces 2021; 203:111719. [PMID: 33831751 DOI: 10.1016/j.colsurfb.2021.111719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 02/25/2021] [Accepted: 03/22/2021] [Indexed: 11/19/2022]
Abstract
Protein adsorption research has primarily focused upon the effects of surface chemistry, with almost no emphasis on how changes to proteins that occur in various disease states may influence their adsorption. One such situation occurs with chronic kidney disease where, despite hemodialysis treatment, the retention of urea within the blood compartment leads to protein carbamylation. Protein carbamylation has been shown to alter the function and structure of proteins. This work is focused on understanding how different degrees of carbamylation affect the physicochemical properties (structure, charge, water interactions) of single proteins (α-lactalbumin, albumin, and fibrinogen) and their adsorption to self-assembled monolayers. It was found that, unlike its secondary structure, the protein's tertiary structure was significantly altered upon carbamylation. Also, compared to native proteins, an increase in carbamylation lead to an increase in the negative surface charge of the protein and a weaker hydration state of the protein. In order to study the effects of different types of neutral surfaces, of different surface-water properties, on protein adsorption both bare and alkanethiol modified (-CH3 or -OH end-groups) Au surfaces with were used as model surfaces. A significant decrease in adsorbed amounts of carbamylated fibrinogen and carbamylated α-lactalbumin, but not for carbamylated albumin, relative to native proteins was observed for both surfaces; suggesting that the increase in negative surface charge is more influential on adsorption than the change in hydration that occurs throughout the protein upon carbamylation. This data suggests that protein alterations that occur due to disease states have a significant effect on the overall protein structure and these changes affect their adsorption to surfaces.
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Affiliation(s)
- Yuhao Ma
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB, T6G 2V2, Canada
| | - Marcello Tonelli
- Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Larry D Unsworth
- Department of Biomedical Engineering, University of Alberta, Edmonton, AB, T6G 2V2, Canada; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 1H9, Canada.
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Indirect electrochemical method for high accuracy quantification of protein adsorption on gold surfaces. Electrochem commun 2021. [DOI: 10.1016/j.elecom.2021.106961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Hoarau M, Badieyan S, Marsh ENG. Immobilized enzymes: understanding enzyme – surface interactions at the molecular level. Org Biomol Chem 2017; 15:9539-9551. [DOI: 10.1039/c7ob01880k] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Interactions between immobilized enzymes and supporting surfaces are complex and context-dependent and can significantly alter enzyme structure, stability and activity.
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Affiliation(s)
- Marie Hoarau
- Department of Chemistry
- University of Michigan
- Ann Arbor
- USA
| | | | - E. Neil G. Marsh
- Department of Chemistry
- University of Michigan
- Ann Arbor
- USA
- Department of Biological Chemistry
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Influence of Surface Charge/Potential of a Gold Electrode on the Adsorptive/Desorptive Behaviour of Fibrinogen. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.06.065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Ko H, Choi YH, Chang SY, Lee GY, Song HW, Chang YW, Kang MJ, Pyun JC. Surface modification of parylene-N with UV-treatment to enhance the protein immobilization. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.04.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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