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Alnaanah SA, Mendes SB. Investigating the influence of solvent type and pH on protein adsorption onto silica surface by evanescent-wave cavity ring-down spectroscopy. ANAL SCI 2024; 40:1089-1099. [PMID: 38512454 DOI: 10.1007/s44211-024-00529-3] [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: 11/22/2023] [Accepted: 01/31/2024] [Indexed: 03/23/2024]
Abstract
Several studies have explored the adsorption of various proteins onto solid-liquid interfaces, revealing the crucial role of buffer solutions in biological processes. However, a comprehensive evaluation of the buffer's influence on protein absorption onto fused silica is still lacking. This study employs evanescent-wave cavity ring-down spectroscopy (EW-CRDS) to assess the influence of buffer solutions and pH on the adsorption kinetics of three globular proteins: hemoglobin (Hb), myoglobin (Mb), and cytochrome c (Cyt-C) onto fused silica. The EW-CRDS tool, with a ring-down time of 1.4 μ s and a minimum detectable absorbance of 1 × 10 - 6 , enabled precise optical measurements at solid-liquid interfaces. The three heme proteins' adsorption behavior was investigated at pH 7 in three different solvents: deionized (DI) water, tris(hydroxymethyl)-aminomethane hydrochloride (Tris-HCl), and phosphate buffered saline (PBS). For each protein, the surface coverage, the adsorption and desorption constants, and the surface equilibrium constant were optically measured by our EW-CRDS tool. Depending on the nature of each solvent, the proteins showed a completely different adsorption trend on the silica surface. The adsorption of Mb on the silica surface was depressed in the presence of both Tris-HCl and PBS buffers compared with unbuffered (DI water) solutions. In contrast, Cyt-C adsorption appears to be relatively unaffected by the choice of buffer, as it involves strong electrostatic interactions with the surface. Notably, Hb exhibits an opposite trend, with enhanced protein adsorption in the presence of Tris-HCl and PBS buffer. The pH investigations demonstrated that the electrostatic interactions between the proteins and the surface had a major influence on protein adsorption on the silica surface, with adsorption being greatest when the pH values were around the protein's isoelectric point. This study demonstrated the ability of the highly sensitive EW-CRDS tool to study the adsorption events of the evanescent-field-confined protein species in real-time at low surface coverages with fast resolution, making it a valuable tool for studying biomolecule kinetics at solid-liquid interfaces.
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Affiliation(s)
- Shadi A Alnaanah
- Department of Physics and Astronomy, University of Louisville, Louisville, KY, 40208, USA.
- Department of Applied Physics, Tafila Technical University, Al-Eis, Tafila, 66110, Jordan.
| | - Sergio B Mendes
- Department of Physics and Astronomy, University of Louisville, Louisville, KY, 40208, USA
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2
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Shinoda H, Higano R, Oizumi T, Nakamura AJ, Kamijo T, Takahashi M, Nagaoka M, Sato Y, Yamaguchi A. Albumin Hydrogel-Coated Mesoporous Silica Nanoparticle as a Carrier of Cationic Porphyrin and Ratiometric Fluorescence pH Sensor. ACS APPLIED BIO MATERIALS 2024; 7:1204-1213. [PMID: 38211352 DOI: 10.1021/acsabm.3c01103] [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: 01/13/2024]
Abstract
Here, we report that a mesoporous silica nanoparticle (MSN) coated with a fluoresceine-labeled bovine serum albumin (F-BSA) hydrogel layer works as a temperature-responsive nanocarrier for tetrakis-N-methylpyridyl porphyrin (TMPyP) and as a fluorescence ratiometric pH probe. F-BSA hydrogel-coated MSN containing TMPyP (F-BSA/MSN/TMPyP) was synthesized by thermal gelation of denatured F-BSA on the external surface of MSN. The F-BSA hydrogel layer was composed of an inner hard corona layer and an outer soft layer and was stable under physiological conditions. F-BSA/MSN/TMPyP exhibited temperature-dependent exponential release of TMPyP. In this release profile, the MSN was found to be a suitable host for stable encapsulation of tetracationic TMPyP by electrostatic interactions, and the F-BSA hydrogel layer mediated the diffusion of TMPyP from the MSN pore interior into the solution phase. Increasing temperature promoted partitioning of TMPyP from the pore interior to the F-BSA hydrogel layer, from where it was spontaneously released into the bulk solution phase by cation exchange. F-BSA/MSN/TMPyP also gave a linear ratiometric fluorescence response (1.3 per pH unit) in the pH range from 6.1 to 8.9.
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Affiliation(s)
- Hidetoshi Shinoda
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Raiha Higano
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Takashi Oizumi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Asako J Nakamura
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Toshio Kamijo
- Department of Creative Engineering, National Institute of Technology, Tsuruoka College, 104 Sawada, Inooka, Tsuruoka, Yamagata 997-8511, Japan
| | - Mio Takahashi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
| | - Masaaki Nagaoka
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Yusuke Sato
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Akira Yamaguchi
- Institute of Quantum Beam Science, Ibaraki University, 2-1-1 Bunky, Mito, Ibaraki 310-8512, Japan
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Xiao Y, Zhang Z, Yin S, Ma X. Nanoplasmonic biosensors for precision medicine. Front Chem 2023; 11:1209744. [PMID: 37483272 PMCID: PMC10359043 DOI: 10.3389/fchem.2023.1209744] [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: 04/21/2023] [Accepted: 06/22/2023] [Indexed: 07/25/2023] Open
Abstract
Nanoplasmonic biosensors have a huge boost for precision medicine, which allows doctors to better understand diseases at the molecular level and to improve the earlier diagnosis and develop treatment programs. Unlike traditional biosensors, nanoplasmonic biosensors meet the global health industry's need for low-cost, rapid and portable aspects, while offering multiplexing, high sensitivity and real-time detection. In this review, we describe the common detection schemes used based on localized plasmon resonance (LSPR) and highlight three sensing classes based on LSPR. Then, we present the recent applications of nanoplasmonic in other sensing methods such as isothermal amplification, CRISPR/Cas systems, lab on a chip and enzyme-linked immunosorbent assay. The advantages of nanoplasmonic-based integrated sensing for multiple methods are discussed. Finally, we review the current applications of nanoplasmonic biosensors in precision medicine, such as DNA mutation, vaccine evaluation and drug delivery. The obstacles faced by nanoplasmonic biosensors and the current countermeasures are discussed.
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Affiliation(s)
- Yiran Xiao
- School of Science, Harbin Institute of Technology, Shenzhen, Guangdong, China
| | | | - Shi Yin
- Briteley Institute of Life Sciences, Yantai, Shandong, China
| | - Xingyi Ma
- School of Science, Harbin Institute of Technology, Shenzhen, Guangdong, China
- Biosen International, Jinan, Shandong, China
- Briteley Institute of Life Sciences, Yantai, Shandong, China
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4
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Porous alumina as potential nanostructures for drug delivery applications, synthesis and characteristics. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Biswas S, Melton LD, Nelson ARJ, Le Brun AP, Heinrich F, McGillivray DJ, Xu AY. The Assembly Mechanism and Mesoscale Architecture of Protein-Polysaccharide Complexes Formed at the Solid-liquid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:12551-12561. [PMID: 36194692 DOI: 10.1021/acs.langmuir.2c02003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Protein-polysaccharide composite materials have generated much interest due to their potential use in medical science and biotechnology. A comprehensive understanding of the assembly mechanism and the mesoscale architecture is needed for fabricating protein-polysaccharide composite materials with desired properties. In this study, complex assemblies were built on silica surfaces through a layer-by-layer (LbL) approach using bovine beta-lactoglobulin variant A (βLgA) and pectin as model protein and polysaccharide, respectively. We demonstrated the combined use of quartz crystal microbalance with dissipation monitoring (QCM-D) and neutron reflectometry (NR) for elucidating the assembly mechanism as well as the internal architecture of the protein-polysaccharide complexes formed at the solid-liquid interface. Our results show that βLgA and pectin interacted with each other and formed a cohesive matrix structure at the interface consisting of intertwined pectin chains that were cross-linked by βLgA-rich domains. Although the complexes were fabricated in an LbL fashion, the complexes appeared to be relatively homogeneous with βLgA and pectin molecules spatially distributed within the matrix structure. Our results also demonstrate that the density of βLgA-pectin complex assemblies increased with both the overall and local charge density of pectin molecules. Therefore, the physical properties of the protein-polysaccharide matrix structure, including density and level of hydration, can be tuned by using polysaccharides with varying charge patterns, thus promoting the development of composite materials with desired properties.
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Affiliation(s)
- Shanta Biswas
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana70803, United States
| | - Laurence D Melton
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland1142, New Zealand
| | - Andrew R J Nelson
- Australian Centre for Neutron Scattering, ANSTO, Locked Bag 2001, Kirrawee DC, New South Wales2232, Australia
| | - Anton P Le Brun
- Australian Centre for Neutron Scattering, ANSTO, Locked Bag 2001, Kirrawee DC, New South Wales2232, Australia
| | - Frank Heinrich
- Department of Physics, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania15213, United States
- NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Mail Stop 6102, Gaithersburg, Maryland20899, United States
| | - Duncan J McGillivray
- School of Chemical Sciences, The University of Auckland, Private Bag 92019, Auckland1142, New Zealand
| | - Amy Y Xu
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana70803, United States
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Nakayama H, Kezuka S, Morita Y, Kitamura T, Takamura E, Sakamoto H. Preparing a pore-size-controlled TEMPO oxidized cellulose nanofiber substrate for enzyme immunoassay applications. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Mechanistic elucidation of freezing-induced surface decomposition of aluminum oxyhydroxide adjuvant. iScience 2022; 25:104456. [PMID: 35874920 PMCID: PMC9301878 DOI: 10.1016/j.isci.2022.104456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/27/2022] [Accepted: 05/14/2022] [Indexed: 11/25/2022] Open
Abstract
The freezing-induced aggregation of aluminum-based (Alum) adjuvants has been considered as the most important cause of reduced vaccine potency. However, the intrinsic properties that determine the functionality of Alum after freezing have not been elucidated. In this study, we used engineered aluminum oxyhydroxide nanoparticles (AlOOH NPs) and demonstrated that cryogenic freezing led to the mechanical pressure-mediated reduction of surface hydroxyl. The sugar-based surfactant, octyl glucoside (OG), was demonstrated to shield AlOOH NPs from the freezing-induced loss of hydroxyl content and the aggregation through the reduction of recrystallization-induced mechanical stress. As a result, the antigenic adsorption property of frozen AlOOH NPs could be effectively protected. When hepatitis B surface antigen (HBsAg) was adjuvanted with OG-protected frozen AlOOH NPs in mice, the loss of immunogenicity was inhibited. These findings provide insights into the freezing-induced surface decomposition of Alum and can be translated to design of protectants to improve the stability of vaccines. The freezing stress led to the destruction of surface hydroxyl group on AlOOH NPs Octyl glucoside protected AlOOH NPs from freezing-induced surface decomposition Octyl glucoside protected vaccines from freezing-induced loss of immunogenicity
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Ma GJ, Yoon BK, Sut TN, Yoo KY, Lee SH, Jeon W, Jackman JA, Ariga K, Cho N. Lipid coating technology: A potential solution to address the problem of sticky containers and vanishing drugs. VIEW 2022. [DOI: 10.1002/viw.20200078] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
- Gamaliel Junren Ma
- School of Materials Science and Engineering Nanyang Technological University Nanyang Singapore
| | - Bo Kyeong Yoon
- School of Chemical Engineering and Biomedical Institute for Convergence at SKKU (BICS) Sungkyunkwan University Suwon Republic of Korea
| | - Tun Naw Sut
- School of Materials Science and Engineering Nanyang Technological University Nanyang Singapore
- School of Chemical Engineering and Biomedical Institute for Convergence at SKKU (BICS) Sungkyunkwan University Suwon Republic of Korea
| | - Ki Yeol Yoo
- LUCA Health and LUCA AICell, Inc. Anyang Republic of Korea
| | - Seung Hwa Lee
- LUCA Health and LUCA AICell, Inc. Anyang Republic of Korea
| | - Won‐Yong Jeon
- School of Chemical Engineering and Biomedical Institute for Convergence at SKKU (BICS) Sungkyunkwan University Suwon Republic of Korea
| | - Joshua A. Jackman
- School of Chemical Engineering and Biomedical Institute for Convergence at SKKU (BICS) Sungkyunkwan University Suwon Republic of Korea
| | - Katsuhiko Ariga
- WPI‐MANA National Institute for Materials Science (NIMS) Tsukuba Ibaraki Japan
- Department of Advanced Materials Science, Graduate School of Frontier Sciences The University of Tokyo Kashiwa Chiba Japan
| | - Nam‐Joon Cho
- School of Materials Science and Engineering Nanyang Technological University Nanyang Singapore
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Uddin MJ, Liyanage S, Warzywoda J, Abidi N, Gill HS. Role of Sporopollenin Shell Interfacial Properties in Protein Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:2763-2776. [PMID: 35212551 DOI: 10.1021/acs.langmuir.1c02682] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Sporopollenin shells isolated from natural pollen grains have received attention in translational and applied research in diverse fields of drug delivery, vaccine delivery, and wastewater remediation. However, little is known about the sporopollenin shell's potential as an adsorbent. Herein, we have isolated sporopollenin shells from four structurally diverse pollen species, black walnut, marsh elder, mugwort, and silver birch, to study protein adsorption onto sporopollenin shells. We investigated three major interfacial properties, surface area, surface functional groups, and surface charge, to elucidate the mechanism of protein adsorption onto sporopollenin shells. We showed that sporopollenin shells have a moderate specific surface area (<12 m2/g). Phosphoric acid and potassium hydroxide treatments that were used to isolate sporopollenin shells from natural pollen grains also result in the functionalization of sporopollenin shell surfaces with ionizable groups of carboxylic acid and carboxylate salt. As a result, sporopollenin shells exhibit a negative ζ potential in the range of -75 to -82 mV at pH 10 when dispersed in water. The ζ potentials of sporopollenin shells remain negative in the pH range of 2.5-11, with the absolute value of ζ potential showing a decrease with the decrease in pH. The negative surface charge promotes the adsorption of protein onto the sporopollenin shell via electrostatic interaction. Despite having a moderate surface area, sporopollenin shells adsorb a significant amount of lysozyme (145-340 μg lysozyme per mg of sporopollenin shells). Lysozyme adsorption onto sporopollenin shells alters the surface, and the surface charge becomes positive at acidic pH. Overall, this study demonstrates the potential of sporopollenin shells to adsorb proteins, highlights the critical role of sporopollenin shell's interfacial properties in protein adsorption, and identifies the mechanism of protein adsorption on sporopollenin shells.
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Affiliation(s)
- Md Jasim Uddin
- Department of Chemical Engineering, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
| | - Sumedha Liyanage
- Fiber and Biopolymer Research Institute, Texas Tech University, 1001 East Loop 289, Lubbock, Texas 79409, United States
- Department of Plant and Soil Science, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
| | - Juliusz Warzywoda
- Materials Characterization Center, Whitacre College of Engineering, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
| | - Noureddine Abidi
- Fiber and Biopolymer Research Institute, Texas Tech University, 1001 East Loop 289, Lubbock, Texas 79409, United States
- Department of Plant and Soil Science, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
| | - Harvinder Singh Gill
- Department of Chemical Engineering, Texas Tech University, 2500 Broadway, Lubbock, Texas 79409, United States
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10
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Tran Truc Phuong N, Xoan Hoang T, La Ngoc Tran N, Gia Phuc L, Phung VD, Kieu Thi Ta H, Ngoc Bach T, Hoa Thi Tran N, The Loan Trinh K. Rapid and sensitive detection of Rhodamine B in food using the plasmonic silver nanocube-based sensor as SERS active substrate. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 263:120179. [PMID: 34298280 DOI: 10.1016/j.saa.2021.120179] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/21/2021] [Accepted: 07/09/2021] [Indexed: 05/21/2023]
Abstract
The use of dye in food is harmful to human health and is prohibited nowadays. However, it is still used because of the benefits, such as cheap prices and abundant resources. Rhodamine B is usually used as the colorant in food such as chili powder, chili oil, etc. It is colorless at very low concentration 10-7 M. The sensitive detection of RhB at ultra-low concentration help to prevent some risk for human. Surface-enhanced Raman scattering (SERS) is a great technique to detect the analytes at ultra-low concentration and provide the molecule's information as a fingerprint. In this study, silver nano-cube was facilely synthesized by reducing Ag+ in ethylene glycol and upgraded to thin-film as a SERS active substrate. RhB was detected at 10-10 M by a silver nano-cube sensor. The dynamic linear regression between the Raman intensity and RhB concentration over seven orders of magnitude (from 10-4 to 10-10 M) was excellent with high reliability (R2 = 0.99). Moreover, the substrate can be used after storing in a dark area for 60 days. This proposed nano-cube silver could serve as a potential substrate for detecting RhB in food at very low concentration.
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Affiliation(s)
- Nguyen Tran Truc Phuong
- Faculty of Materials Science and Technology, University of Science, HoChiMinh City, Viet Nam; Vietnam National University, HoChiMinh City, Viet Nam
| | - Thi Xoan Hoang
- Department of Life Science, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Nguyen La Ngoc Tran
- Faculty of Materials Science and Technology, University of Science, HoChiMinh City, Viet Nam; Vietnam National University, HoChiMinh City, Viet Nam
| | - Lam Gia Phuc
- Faculty of Materials Science and Technology, University of Science, HoChiMinh City, Viet Nam; Vietnam National University, HoChiMinh City, Viet Nam
| | - Viet-Duc Phung
- Future Materials and Devices Laboratory, Duy Tan University, Ho Chi Minh City 700000, Viet Nam; Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang 550000, Viet Nam
| | - Hanh Kieu Thi Ta
- Faculty of Materials Science and Technology, University of Science, HoChiMinh City, Viet Nam; Vietnam National University, HoChiMinh City, Viet Nam; Center for Innovative Materials and Architectures (INOMAR), HoChiMinh City, Viet Nam
| | - Ta Ngoc Bach
- Institute of Materials Science, Vietnam Academy of Science and Technology, Ha Noi, Viet Nam
| | - Nhu Hoa Thi Tran
- Faculty of Materials Science and Technology, University of Science, HoChiMinh City, Viet Nam; Vietnam National University, HoChiMinh City, Viet Nam.
| | - Kieu The Loan Trinh
- Department of Industrial Environmental Engineering, College of Industrial Environmental Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea.
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11
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Park H, Sut TN, Yoon BK, Zhdanov VP, Cho NJ, Jackman JA. Unraveling How Multivalency Triggers Shape Deformation of Sub-100 nm Lipid Vesicles. J Phys Chem Lett 2021; 12:6722-6729. [PMID: 34263601 DOI: 10.1021/acs.jpclett.1c01510] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Multivalent ligand-receptor interactions are critical to the function of membrane-enveloped biological and biomimetic nanoparticles, yet resulting nanoparticle shape changes are rarely investigated. Using the localized surface plasmon resonance (LSPR) sensing technique, we tracked the attachment of biotinylated, sub-100 nm lipid vesicles to a streptavidin-functionalized supported lipid bilayer (SLB) and developed an analytical model to extract quantitative details about the vesicle-SLB contact region. The experimental results were supported by theoretical analyses of biotin-streptavidin complex formation and corresponding structural and energetic aspects of vesicle deformation. Our findings reveal how varying the surface densities of streptavidin receptors in the SLB and biotin ligands in the vesicles affects the extent of nanometer-scale vesicle deformation. We also identify conditions, i.e., a critical ligand density, at which appreciable vesicle deformation began, which provides insight into how the membrane bending energy partially counterposes the multivalent binding interaction energy. These findings are generalizable to various multivalent ligand-receptor systems.
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Affiliation(s)
- Hyeonjin Park
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Drive 637553, Singapore
| | - Tun Naw Sut
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Drive 637553, Singapore
| | - Bo Kyeong Yoon
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Vladimir P Zhdanov
- Boreskov Institute of Catalysis, Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - Nam-Joon Cho
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Drive 637553, Singapore
| | - Joshua A Jackman
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Yoon BK, Ma GJ, Park H, Ferhan AR, Cho NJ, Jackman JA. Solvent-induced conformational tuning of lysozyme protein adlayers on silica surfaces: A QCM-D and LSPR study. Int J Biol Macromol 2021; 182:1906-1914. [PMID: 34022315 DOI: 10.1016/j.ijbiomac.2021.05.113] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 05/13/2021] [Accepted: 05/16/2021] [Indexed: 10/24/2022]
Abstract
There is broad interest in functionalizing solid surfaces with lysozyme, which is a widely studied antimicrobial protein. To date, most efforts have focused on developing more effective immobilization schemes to promote lysozyme attachment in fully aqueous conditions, while there remains an outstanding need to understand how tuning the solution-phase conformational stability of lysozyme proteins can modulate adsorption behavior and resulting adlayer properties. Inspired by the unique conformational behavior of lysozyme proteins in water-ethanol mixtures, we conducted quartz crystal microbalance-dissipation (QCM-D) and localized surface plasmon resonance (LSPR) measurements to systematically investigate the adsorption behavior of lysozyme proteins onto silica surfaces across a wide range of water-ethanol mixtures. Our findings revealed that lysozyme adsorption behavior strongly depended on the ethanol fraction in a non-monotonic fashion and this trend could be rationalized by taking into account how competing effects of water and ethanol solvation influence solution-phase protein size and conformational stability. Integrated analysis of the QCM-D and LSPR measurement trends enabled quantitative determination of the solvent mass within lysozyme adlayers, which tended to decrease at higher ethanol fractions and supported that the hydrodynamic properties of lysozyme adlayers are mainly influenced by the degree of protein conformational flexibility as opposed to solvation effects alone.
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Affiliation(s)
- Bo Kyeong Yoon
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Gamaliel Junren Ma
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
| | - Hyeonjin Park
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea; School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
| | - Abdul Rahim Ferhan
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
| | - Nam-Joon Cho
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore.
| | - Joshua A Jackman
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Wynendaele E, Ma GJ, Xu X, Cho NJ, De Spiegeleer B. Conformational stability as a quality attribute for the cell therapy raw material human serum albumin. RSC Adv 2021; 11:15332-15339. [PMID: 35424076 PMCID: PMC8698240 DOI: 10.1039/d1ra01064f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/19/2021] [Indexed: 01/30/2023] Open
Abstract
Although human serum albumin (HSA) has been used for many decades, there is still a lack of suitable quality control (QC) attributes. Its current use as a raw material in gene-, cell- and tissue-therapies requires more appropriate functionally-relevant quality attributes and methods. This study investigated the conformational stability of serum albumin using circular dichroism (CD) spectroscopy and dynamic light scattering (DLS) for evaluating the thermal sensitivity, and quartz crystal microbalance-dissipation (QCM-D) and localized surface plasmon resonance (LSPR) for assessing the adsorption behavior. Different serum albumin samples were used, encompassing plasma-derived HSA (pHSA), recombinant octanoate-stabilized HSA (rHSA) and bovine serum albumin (BSA). The melting temperature (T m) as well as the onset temperature (T onset) were obtained from the derivative curves of the temperature gradient CD data at 222 nm. The results from DLS, as well as from real-time QCM-D and LSPR silica-adsorption kinetic profiles confirmed the relatively higher conformational stability of the octanoate (fatty acid) containing rHSA, while the additional negative charge resulted in a lower amount adsorbed to the silica surface compared to the non-stabilized HSA and BSA. Adsorption studies further revealed that BSA has a lower conformational stability and undergoes more extensive adsorption-induced spreading compared to the non-stabilized HSA. Collectively, the temperature-based (CD and DLS) as well as adsorption-based biosensor (QCM-D and LSPR) approaches gave congruent and discriminatory information about the conformational stability of different serum albumins, indicating that these techniques provide information on valuable QC attributes.
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Affiliation(s)
- Evelien Wynendaele
- Faculty of Pharmaceutical Sciences, Ghent University Ottergemsesteenweg 460 Ghent 9000 Belgium +32 9 264 81 00
| | - Gamaliel Junren Ma
- School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue Nanyang 639798 Singapore
| | - Xiaolong Xu
- Faculty of Pharmaceutical Sciences, Ghent University Ottergemsesteenweg 460 Ghent 9000 Belgium +32 9 264 81 00
| | - Nam-Joon Cho
- School of Materials Science and Engineering, Nanyang Technological University 50 Nanyang Avenue Nanyang 639798 Singapore
| | - Bart De Spiegeleer
- Faculty of Pharmaceutical Sciences, Ghent University Ottergemsesteenweg 460 Ghent 9000 Belgium +32 9 264 81 00
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