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Drozd M, Duszczyk A, Ivanova P, Pietrzak M. Interactions of proteins with metal-based nanoparticles from a point of view of analytical chemistry - Challenges and opportunities. Adv Colloid Interface Sci 2022; 304:102656. [PMID: 35367856 DOI: 10.1016/j.cis.2022.102656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/18/2022] [Accepted: 03/23/2022] [Indexed: 11/01/2022]
Abstract
Interactions of proteins with nanomaterials draw attention of many research groups interested in fundamental phenomena. However, alongside with valuable information regarding physicochemical aspects of such processes and their mechanisms, they more and more often prove to be useful from a point of view of bioanalytics. Deliberate use of processes based on adsorption of proteins on nanoparticles (or vice versa) allows for a development of new analytical methods and improvement of the existing ones. It also leads to obtaining of nanoparticles of desired properties and functionalities, which can be used as elements of analytical tools for various applications. Due to interactions with nanoparticles, proteins can also gain new functionalities or lose their interfering potential, which from perspective of bioanalytics seems to be very inviting and attractive. In the framework of this article we will discuss the bioanalytical potential of interactions of proteins with a chosen group of nanoparticles, and implementation of so driven processes for biosensing. Moreover, we will show both positive and negative (opportunities and challenges) aspects resulting from the presence of proteins in media/samples containing metal-based nanoparticles or their precursors.
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2
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Lou D, Fan L, Jiang T, Zhang Y. Advances in nanoparticle‐based lateral flow immunoassay for point‐of‐care testing. VIEW 2022. [DOI: 10.1002/viw.20200125] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Doudou Lou
- Jiangsu Institute for Food and Drug Control 17 Kangwen Road Nanjing P. R. China
| | - Lin Fan
- School of Geographic and Biologic Information Nanjing University of Posts and Telecommunications Nanjing P. R. China
| | - Tao Jiang
- Army of Reserve Infantry Division in Heilongjiang Province Harbin Heilongjiang Province P. R. China
| | - Yu Zhang
- State Key Laboratory of Bioelectronics Jiangsu Key Laboratory for Biomaterials and Devices School of Biological Science and Medical Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology Southeast University Nanjing P. R. China
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3
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Xu Z, He Z, Quan X, Sun D, Miao Z, Yu H, Yang S, Chen Z, Zeng J, Zhou J. Molecular simulations of charged complex fluids: A review. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.11.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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4
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Mukherjee M, Purkayastha P. The exposed amino acids on protein skeleton control protein adsorption on surface-engineered silver nanoparticles. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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5
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Long-Range Surface Plasmon-Polariton Waveguide Biosensors for Human Cardiac Troponin I Detection. SENSORS 2019; 19:s19030631. [PMID: 30717341 PMCID: PMC6386922 DOI: 10.3390/s19030631] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/25/2019] [Accepted: 01/29/2019] [Indexed: 11/17/2022]
Abstract
Straight long-range surface plasmon-polariton (LRSPP) waveguides as biosensors for label-free detection are discussed. The sensors consist of 5-μm-wide 35-nm-thick gold stripes embedded in a low-index optical-grade fluoropolymer (CYTOPTM) with fluidic channels etched to the Au surface of the stripes. This work demonstrates the application of the LRSPP biosensors for the detection of human cardiac troponin I (cTnI) protein. cTnI is a biological marker for acute myocardial infarction (AMI), often referred to as a heart attack, which can be diagnosed by elevated levels of cTnI in patient blood. Direct and sandwich assays were developed and demonstrated over the concentration range from 1 to 1000 ng/mL, yielding detection limits of 430 pg/mL for the direct assay and 28 pg/mL for the sandwich assay (1 standard deviation), the latter being physiologically relevant to the early detection or onset of AMI. In addition, a novel approach for data analysis is proposed, where the analyte response is normalized to the response of the antibody layer.
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Ma W, Saccardo A, Roccatano D, Aboagye-Mensah D, Alkaseem M, Jewkes M, Di Nezza F, Baron M, Soloviev M, Ferrari E. Modular assembly of proteins on nanoparticles. Nat Commun 2018; 9:1489. [PMID: 29662234 PMCID: PMC5902510 DOI: 10.1038/s41467-018-03931-4] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 03/21/2018] [Indexed: 01/03/2023] Open
Abstract
Generally, the high diversity of protein properties necessitates the development of unique nanoparticle bio-conjugation methods, optimized for each different protein. Here we describe a universal bio-conjugation approach which makes use of a new recombinant fusion protein combining two distinct domains. The N-terminal part is Glutathione S-Transferase (GST) from Schistosoma japonicum, for which we identify and characterize the remarkable ability to bind gold nanoparticles (GNPs) by forming gold-sulfur bonds (Au-S). The C-terminal part of this multi-domain construct is the SpyCatcher from Streptococcus pyogenes, which provides the ability to capture recombinant proteins encoding a SpyTag. Here we show that SpyCatcher can be immobilized covalently on GNPs through GST without the loss of its full functionality. We then show that GST-SpyCatcher activated particles are able to covalently bind a SpyTag modified protein by simple mixing, through the spontaneous formation of an unusual isopeptide bond.
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Affiliation(s)
- Wenwei Ma
- College of Science, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK
| | - Angela Saccardo
- College of Science, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK
| | - Danilo Roccatano
- College of Science, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK
| | | | - Mohammad Alkaseem
- College of Science, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK
| | - Matthew Jewkes
- College of Science, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK
| | - Francesca Di Nezza
- Department of Bioscience and Territory, University of Molise, Contrada Fonte Lappone, 86090, Pesche, Italy
| | - Mark Baron
- College of Science, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK
| | - Mikhail Soloviev
- School of Biological Sciences, Royal Holloway University of London, Egham Hill, Egham, TW20 0EX, UK
| | - Enrico Ferrari
- College of Science, University of Lincoln, Brayford Pool, Lincoln, LN6 7TS, UK.
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7
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Ge Y, Zhong Y, Ji G, Lu Q, Dai X, Guo Z, Zhang P, Peng G, Zhang K, Li Y. Preparation and characterization of Fe3O4@Au-C225 composite targeted nanoparticles for MRI of human glioma. PLoS One 2018; 13:e0195703. [PMID: 29652919 PMCID: PMC5898739 DOI: 10.1371/journal.pone.0195703] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 03/28/2018] [Indexed: 12/05/2022] Open
Abstract
Objective To study the characterization of Fe3O4@Au-C225 composite targeted MNPs. Methods Fe3O4@Au-C225 was prepared by the absorption method. The immunosorbent assay was used to evaluate its absorption efficiency at C225 Fc. ZETA SIZER3000 laser particle size analyzer, ultraviolet photometer and its characteristics were analyzed by VSM. the targeting effect of Fe3O4@Au-C225 composite targeted MNPs on U251 cells in vitro were detected by 7.0 Tesla Micro-MR; and subcutaneous transplanted human glioma in nude mice were performed the targeting effect in vivo after tail vein injection of Fe3O4@Au-C225 composite targeted MNPs by MRI. Results The self-prepared Fe3O4@Au composite MNPs can adsorb C225 with high efficiency of adsorption so that Fe3O4@Au-C225 composite targeted MNPs were prepared successfully. Fe3O4@Au-C225 composite targeted MNPs favorably targeted human glioma cell line U251 in vitro; Fe3O4@Au-C225 composite targeted MNPs have good targeting ability to xenografted glioma on nude mice in vivo, and can be traced by MRI. Conclusion The Fe3O4@Au-C225 composite targeted MNPs have the potential to be used as a tracer for glioma in vivo.
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Affiliation(s)
- Yaoqi Ge
- Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Yuejiao Zhong
- Jiangsu Cancer Hospital and Jiangsu Institute of Cancer Research, Nanjing, Jiangsu Province, China
| | - Guozhong Ji
- Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Qianling Lu
- Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Xinyu Dai
- Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Zhirui Guo
- Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Peng Zhang
- Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Gang Peng
- Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Kangzhen Zhang
- Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Yuntao Li
- Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
- * E-mail:
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8
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Yang F, Zuo X, Fan C, Zhang XE. Biomacromolecular nanostructures-based interfacial engineering: from precise assembly to precision biosensing. Natl Sci Rev 2018. [DOI: 10.1093/nsr/nwx134] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Abstract
Biosensors are a type of important biodevice that integrate biological recognition elements, such as enzyme, antibody and DNA, and physical or chemical transducers, which have revolutionized clinical diagnosis especially under the context of point-of-care tests. Since the performance of a biosensor depends largely on the bio–solid interface, design and engineering of the interface play a pivotal role in developing quality biosensors. Along this line, a number of strategies have been developed to improve the homogeneity of the interface or the precision in regulating the interactions between biomolecules and the interface. Especially, intense efforts have been devoted to controlling the surface chemistry, orientation of immobilization, molecular conformation and packing density of surface-confined biomolecular probes (proteins and nucleic acids). By finely tuning these surface properties, through either gene manipulation or self-assembly, one may reduce the heterogeneity of self-assembled monolayers, increase the accessibility of target molecules and decrease the binding energy barrier to realize high sensitivity and specificity. In this review, we summarize recent progress in interfacial engineering of biosensors with particular focus on the use of protein and DNA nanostructures. These biomacromolecular nanostructures with atomistic precision lead to highly regulated interfacial assemblies at the nanoscale. We further describe the potential use of the high-performance biosensors for precision diagnostics.
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Affiliation(s)
- Fan Yang
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Xiaolei Zuo
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Chunhai Fan
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Xian-En Zhang
- National Key Laboratory of Biomacromolecules, CAS Excellence Center for Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
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9
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Icoz K, Soylu MC, Canikara Z, Unal E. Quartz-crystal Microbalance Measurements of CD19 Antibody Immobilization on Gold Surface and Capturing B Lymphoblast Cells: Effect of Surface Functionalization. ELECTROANAL 2018. [DOI: 10.1002/elan.201700789] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Kutay Icoz
- BioMINDS (Bio Micro/Nano Devices and Sensors) Lab, Department of Electrical and Electronics Engineering; Abdullah Gul University; 38080 Kayseri Turkey
| | - Mehmet Cagri Soylu
- Biomedical Engineering Department; Erciyes University; 38030 Kayseri Turkey
| | - Zeynep Canikara
- Biomedical Engineering Department; Erciyes University; 38030 Kayseri Turkey
| | - Ekrem Unal
- Division of Pediatric Hematology, Department of Pediatrics, Faculty of Medicine; Erciyes University; 38030 Kayseri Turkey
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10
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Affiliation(s)
- Qing Shao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Carol K. Hall
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
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11
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Shen M, Rusling J, Dixit CK. Site-selective orientated immobilization of antibodies and conjugates for immunodiagnostics development. Methods 2017; 116:95-111. [PMID: 27876681 PMCID: PMC5374010 DOI: 10.1016/j.ymeth.2016.11.010] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/16/2016] [Accepted: 11/17/2016] [Indexed: 01/11/2023] Open
Abstract
Immobilized antibody systems are the key to develop efficient diagnostics and separations tools. In the last decade, developments in the field of biomolecular engineering and crosslinker chemistry have greatly influenced the development of this field. With all these new approaches at our disposal, several new immobilization methods have been created to address the main challenges associated with immobilized antibodies. Few of these challenges that we have discussed in this review are mainly associated to the site-specific immobilization, appropriate orientation, and activity retention. We have discussed the effect of antibody immobilization approaches on the parameters on the performance of an immunoassay.
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Affiliation(s)
- Min Shen
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060
| | - James Rusling
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136
- Department of Cell Biology, University of Connecticut Health Center, Farmington, Connecticut 060
- School of Chemistry, National University of Ireland at Galway, Galway, Ireland
| | - Chandra K Dixit
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269-3060
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12
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Haring AP, Cesewski E, Johnson BN. Piezoelectric Cantilever Biosensors for Label-free, Real-time Detection of DNA and RNA. Methods Mol Biol 2017; 1572:247-262. [PMID: 28299693 DOI: 10.1007/978-1-4939-6911-1_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This chapter reviews the design, fabrication, characterization, and application of piezoelectric-excited millimeter-sized cantilever (PEMC) sensors. The sensor transduction mechanism, sensing principle, and mode of operation are discussed. Bio-recognition strategies and surface functionalization methods for detection of DNA and RNA are discussed with a focus on self-assembly-based approaches. Methods for the verification of biosensor response via secondary binding assays, reversible binding assays, and the integration of complementary transduction mechanisms are presented. Sensing applications for medical diagnostics, food safety, and environmental monitoring are provided. PEMC sensor technology provides a robust platform for the real-time, label-free detection of DNA and RNA in complex matrices over nanomolar (nM) to attomolar (aM) concentration ranges.
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Affiliation(s)
- Alexander P Haring
- Department of Industrial and Systems Engineering, School of Neuroscience, Macromolecules Innovation Institute, Virginia Tech, 1145 Perry Street, Blacksburg, VA, 24061, USA
| | - Ellen Cesewski
- Department of Industrial and Systems Engineering, School of Neuroscience, Macromolecules Innovation Institute, Virginia Tech, 1145 Perry Street, Blacksburg, VA, 24061, USA
| | - Blake N Johnson
- Department of Industrial and Systems Engineering, School of Neuroscience, Macromolecules Innovation Institute, Virginia Tech, 1145 Perry Street, Blacksburg, VA, 24061, USA.
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13
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Ozboyaci M, Kokh DB, Wade RC. Three steps to gold: mechanism of protein adsorption revealed by Brownian and molecular dynamics simulations. Phys Chem Chem Phys 2016; 18:10191-200. [PMID: 27021898 DOI: 10.1039/c6cp00201c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The addition of three N-terminal histidines to β-lactamase inhibitor protein was shown experimentally to increase its binding potency to an Au(111) surface substantially but the binding mechanism was not resolved. Here, we propose a complete adsorption mechanism for this fusion protein by means of a multi-scale simulation approach and free energy calculations. We find that adsorption is a three-step process: (i) recognition of the surface predominantly by the histidine fusion peptide and formation of an encounter complex facilitated by a reduced dielectric screening of water in the interfacial region, (ii) adsorption of the protein on the surface and adoption of a specific binding orientation, and (iii) adaptation of the protein structure on the metal surface accompanied by induced fit. We anticipate that the mechanistic features of protein adsorption to an Au(111) surface revealed here can be extended to other inorganic surfaces and proteins and will therefore aid the design of specific protein-surface interactions.
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Affiliation(s)
- M Ozboyaci
- Heidelberg Institute for Theoretical Studies (HITS), Schloss-Wolfsbrunnenweg 35, 69118 Heidelberg, Germany.
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Krupin O, Wang C, Berini P. Detection of leukemia markers using long-range surface plasmon waveguides functionalized with Protein G. LAB ON A CHIP 2015; 15:4156-4165. [PMID: 26374150 DOI: 10.1039/c5lc00940e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel optical biosensor based on long-range surface plasmon-polariton (LRSPP) waveguides is demonstrated for the detection of leukemia markers in patient serum using a functionalization strategy based on Protein G. The sensor consists of thin straight Au waveguides (5 μm × 35 nm × 3.2 mm) embedded in fluoropolymer CYTOP™ with a fluidic channel etched into the top cladding. B-cell leukemia is characterized by a high B-cell count and abnormal distribution of immunoglobulin G kappa (IgGκ) and lambda (IgGλ) light chains in serum. The detection of leukemic abnormalities in serum was performed based on determining IgGκ-to-IgGλ ratios (κ : λ). Three patient sera were tested: high kappa (HKS, κ : λ ~12.7 : 1), high lambda (HLS, λ : κ ~6.9 : 1) and normal (control) sera (NS, κ : λ ~1.7 : 1). Au waveguides were functionalized with Protein G and two complementary immobilization approaches were investigated: a) the reverse approach, where the Protein G surface is functionalized with patient serum and then tested against goat anti-human IgG light chains in buffer, and b) the direct approach, where the Protein G surface is functionalized with goat anti-human IgGs first and then tested against patient serum. The reverse approach was found to be more effective and robust because Protein G-functionalized surface performs as an "immunological filter" by capturing primarily IgGs out of the pool of serum proteins. For the reverse approach, the ratios measured were 3.7 : 1(κ : λ), 9.7 : 1(λ : κ) and 1.9 : 1(κ : λ) for HKS, HLS and NS, respectively, which compare favorably with corresponding protein densitometry measurements. The respective ratios for the direct approach were 2.6 : 1(κ : λ), 2.6 : 1(λ : κ) and 1.7 : 1(κ : λ). The binding strength and cross-reactivity of goat anti-human IgGs light chains were also determined using pure solutions. The LRSPP biosensor along with the innovative "reverse approach" can provide a low-cost and compact solution to B-cell leukemia screening.
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Affiliation(s)
- O Krupin
- Department of Biological and Chemical Engineering, University of Ottawa, 161 Louis Pasteur, Ottawa, Ontario K1N 6N5, Canada.
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15
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Leukemic marker detection using a spectro-polarimetric surface plasmon resonance platform. Biosens Bioelectron 2015; 63:80-85. [DOI: 10.1016/j.bios.2014.06.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 06/10/2014] [Accepted: 06/10/2014] [Indexed: 11/19/2022]
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16
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Hosseinidoust Z, Olsson AL, Tufenkji N. Going viral: Designing bioactive surfaces with bacteriophage. Colloids Surf B Biointerfaces 2014; 124:2-16. [DOI: 10.1016/j.colsurfb.2014.05.036] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 05/25/2014] [Accepted: 05/26/2014] [Indexed: 12/22/2022]
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Effect of the interplay between protein and surface on the properties of adsorbed protein layers. Biomaterials 2014; 35:6157-63. [PMID: 24780165 PMCID: PMC4051990 DOI: 10.1016/j.biomaterials.2014.04.012] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/05/2014] [Indexed: 11/23/2022]
Abstract
Although protein adsorption to surface is a common phenomenon, investigation of the process is challenging due to the complexity of the interplay between external factors, protein and surface properties. Therefore experimental approaches have to measure the properties of adsorbed protein layers with high accuracy in order to achieve a comprehensive description of the process. To this end, we used a combination of two biosensing techniques, dual polarization interferometry and quartz crystal microbalance with dissipation. From this, we are able to extract surface coverage values, layer structural parameters, water content and viscoelastic properties to examine the properties of protein layers formed at the liquid/solid interface. Layer parameters were examined upon adsorption of proteins of varying size and structural properties, on surfaces with opposite polarity. We show that “soft” proteins such as unfolded α-synuclein and high molecular weight albumin are highly influenced by the surface polarity, as they form a highly diffuse and hydrated layer on the hydrophilic silica surface as opposed to the denser, less hydrated layer formed on a hydrophobic methylated surface. These layer properties are a result of different orientations and packing of the proteins. By contrast, lysozyme is barely influenced by the surface polarity due to its intrinsic structural stability. Interestingly, we show that for a similar molecular weight, the unfolded α-synuclein forms a layer with the highest percentage of solvation not related to surface coverage but resulting from the highest water content trapped within the protein. Together, these data reveal a trend in layer properties highlighting the importance of the interplay between protein and surface for the design of biomaterials.
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Luan Y, Li D, Wang Y, Liu X, Brash JL, Chen H. 125I-radiolabeling, surface plasmon resonance, and quartz crystal microbalance with dissipation: three tools to compare protein adsorption on surfaces of different wettability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:1029-1035. [PMID: 24393063 DOI: 10.1021/la403498w] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The extent of protein adsorption is an important consideration in the biocompatibility of biomaterials. Various experimental methods can be used to determine the quantity of protein adsorbed, but the results usually differ. In the present work, self-assembled monolayers (SAMs) were used to prepare a series of model gold surfaces varying systematically in water wettability, from hydrophilic to hydrophobic. Three commonly used methods, namely, surface plasmon resonance (SPR), quartz crystal microbalance with dissipation (QCM-D), and (125)I-radiolabeling, were employed to quantify fibrinogen (Fg) adsorption on these surfaces. This approach allows a direct comparison of the mass of Fg adsorbed using these three techniques. The results from all three methods showed that protein adsorption increases with increasing surface hydrophobicity. The increase in the mass of Fg adsorbed with increasing surface hydrophobicity in the SPR data was parallel to that from (125)I-radiolabeling, but the absolute values were different and there does not seem to be a "universally congruent" relationship between the two methods for surfaces with varying wettability. For QCM-D, the variation in protein adsorption with wettability was different from that for SPR and radiolabeling. On the more hydrophobic surfaces, QCM-D gave an adsorbed mass much higher than from the two other methods, possibly because QCM-D measures both the adsorbed Fg and its associated water. However, on the more hydrophilic surfaces, the adsorbed mass from QCM-D was slightly greater than that from SPR, and both were smaller than from (125)I-radiolabeling; this was true no matter whether the Sauerbrey equation or the Voigt model was used to convert QCM-D data to adsorbed mass.
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Affiliation(s)
- Yafei Luan
- Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University , 199 Ren-ai Road, Suzhou 215123, PR China
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Liu J, Liao C, Zhou J. Multiscale simulations of protein G B1 adsorbed on charged self-assembled monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:11366-11374. [PMID: 23947739 DOI: 10.1021/la401171v] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The orientation of an antibody plays an important role in the development of immunosensors. Protein G is an antibody binding protein, which specifically targets the Fc fragment of an antibody. In this work, the orientation of prototypical and mutated protein G B1 adsorbed on positively and negatively charged self-assembled monolayers was studied by parallel tempering Monte Carlo and all-atom molecular dynamics simulations. Both methods present generally similar orientation distributions of protein G B1 for each kind of surface. The root-mean-square deviation, DSSP, gyration radius, eccentricity, dipole moment, and superimposed structures of protein G B1 were analyzed. Moreover, the orientation of binding antibody was also predicted in this work. Simulation results show that with the same orientation trends, the mutant exhibits narrower orientation distributions than does the prototype, which was mainly caused by the stronger dipole of the mutant. Both kinds of proteins adsorbed on charged surfaces were induced by the competition of electrostatic interaction and vdW interaction; the electrostatic interaction energy dominated the adsorption behavior. The protein adsorption was also largely affected by the distribution of charged residues within the proteins. Thus, the prototype could adsorb on a negatively charged surface, although it keeps a net charge of -4 e. The mutant has imperfect opposite orientation when it adsorbed on oppositely charged surfaces. For the mutant on a carboxyl-functionalized self-assembled monolayer (COOH-SAM), the orientation was the same as that inferred by experiments. While for the mutant on amine-functionalized self-assembled monolayer (NH2-SAM), the orientation was induced by the competition between attractive interactions (led by ASP40 and GLU56) and repulsive interactions (led by LYS10); thus, the perfect opposite orientation could not be obtained. On both surfaces, the adsorbed protein could retain its native conformation. The desired orientation of protein G B1, which would increase the efficiency of binding antibodies, could be obtained on a negatively charged surface adsorbed with the prototype. Further, we deduced that with the packing density of 12,076 protein G B1 domain per μm(2), the efficiency of the binding IgG would be maximized. The simulation results could be applied to control the orientation of protein G B1 in experiments and to provide a better understanding to maximize the efficiency of antibody binding.
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Affiliation(s)
- Jie Liu
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab for Green Chemical Product Technology, South China University of Technology , Guangzhou, Guangdong, 510640, People's Republic of China
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Rains M, Martić S, Freeman D, Kraatz HB. Electrochemical investigations into kinase-catalyzed transformations of tau protein. ACS Chem Neurosci 2013; 4:1194-203. [PMID: 23687953 PMCID: PMC3750680 DOI: 10.1021/cn400021d] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Accepted: 05/06/2013] [Indexed: 01/29/2023] Open
Abstract
The formation of neurofibrillary tangles by hyperphosphorylated tau is a well-recognized hallmark of Alzheimer's disease. Resulting from malfunctioning protein kinases, hyperphosphorylated tau is unable to bind microtubules properly, causing it to self-associate and aggregate. The effects of tau phosphorylation on tau conformation and aggregation are still largely unexplored. The conformational analysis of tau and its hyperphosphorylated forms is usually performed by a variety of spectroscopic techniques, all of which require ample sample concentrations and/or volumes. Here we report on the use of surface based electrochemical techniques that allow for detection of conformational changes and orientation of tau protein as a function of tau phosphorylation by tyrosine and serine/threonine kinases. The electrochemical methods utilize 5'-γ-ferrocenyl adenosine triphosphate (Fc-ATP) derivative as a cosubstrate and tau immobilized on gold surface to probe the role of the following protein kinases: Sarcoma related kinase (Src), Abelson tyrosine kinase (Abl), tau-tubulin kinase (TTBK), proto-oncogene tyrosine protein kinase Fyn (Fyn), and glycogen synthase kinase 3-β (Gsk-3β). The single kinase and sequential kinase-catalyzed Fc-phosphorylations modulate the electrochemical signal, pointing to the dramatic changes around the Fc group in the Fc-phosphorylated tau films. The location and orientation of the Fc-group in Fc-tau film was investigated by the surface plasmon resonance based on antiferrocene antibodies. Additional surface characterization of the Fc-tau films by time-of-flight secondary ion-mass spectrometry and X-ray photoelectron spectroscopy revealed that Fc-phosphorylations influence the tau orientation and conformation on surfaces. When Fc-phosphorylations were performed in solution, the subsequently immobilized Fc-tau exhibited similar trends. This study illustrates the validity and the utility of the labeled electrochemical approach for probing the changes in protein film properties, conformation, and orientation as a function of the enzymatically catalyzed modifications.
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Affiliation(s)
- Meghan
K. Rains
- Department of Physical and Environmental
Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C1A4, Canada
- Department of Chemistry, University
of Toronto, 80 St. George St., Toronto,
ON, M5S3H6 Canada
| | - Sanela Martić
- Department of Physical and Environmental
Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C1A4, Canada
- Department of Chemistry, University
of Toronto, 80 St. George St., Toronto,
ON, M5S3H6 Canada
- Department
of Chemistry, Oakland University, 2200
North Squirrel Road, Rochester,
Michigan 48309, United States
| | - Daniel Freeman
- Department of Physical and Environmental
Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C1A4, Canada
- Department of Chemistry, University
of Toronto, 80 St. George St., Toronto,
ON, M5S3H6 Canada
| | - Heinz Bernhard Kraatz
- Department of Physical and Environmental
Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON, M1C1A4, Canada
- Department of Chemistry, University
of Toronto, 80 St. George St., Toronto,
ON, M5S3H6 Canada
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Korkmaz N. Recombinant bacteriophages as gold binding bio-templates. Colloids Surf B Biointerfaces 2013; 112:219-28. [PMID: 23994747 DOI: 10.1016/j.colsurfb.2013.07.063] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 07/03/2013] [Accepted: 07/30/2013] [Indexed: 12/31/2022]
Abstract
Bacteriophages are nano-sized virion particles infecting bacteria. In this study, it is shown that metal binding properties of filamentous fd-bacteriophages can be enhanced by genetic engineering. Quartz crystal microbalance (QCM) analyses, UV-vis absorption spectra measurements and scanning electron microscopy (SEM) imaging revealed that expression of MMM short amino acid sequence on major coat protein p8 facilitates recombinant MMM-phage binding to Au surfaces and nanoparticles (NPs) via gold-sulfur (AuS) interaction. Electroless deposition of Au particles on phage assemblies was investigated upon chemical reduction reaction with NaBH4 at different HAuCl4 precursor concentrations. Energy dispersive X-ray spectroscopy (EDX) measurements confirmed the presence of Au on both AuNP decorated and chemically metallized phage structures. Further studies on patterning and controlled immobilization of recombinant bacteriophages on specific surfaces may contribute to bio-templated nanowire development field and biosensor application studies.
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Affiliation(s)
- Nuriye Korkmaz
- Convergence Bioscience Group, Nanomedicine Team, Korea Institute of Science and Technology, Europe Forschungsgesellschaft mbH, Campus E 71, D-66123 Saarbrücken, Germany.
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22
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Sharma H, Mutharasan R. Half Antibody Fragments Improve Biosensor Sensitivity without Loss of Selectivity. Anal Chem 2013; 85:2472-7. [DOI: 10.1021/ac3035426] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Harsh Sharma
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104,
United States
| | - Raj Mutharasan
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104,
United States
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Ren J, Wang L, Han X, Cheng J, Lv H, Wang J, Jian X, Zhao M, Jia L. Organic silicone sol-gel polymer as a noncovalent carrier of receptor proteins for label-free optical biosensor application. ACS APPLIED MATERIALS & INTERFACES 2013; 5:386-394. [PMID: 23259485 DOI: 10.1021/am3024355] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Optical biosensing techniques have become of key importance for label-free monitoring of biomolecular interactions in the current proteomics era. Together with an increasing emphasis on high-throughput applications in functional proteomics and drug discovery, there has been demand for facile and generally applicable methods for the immobilization of a wide range of receptor proteins. Here, we developed a polymer platform for microring resonator biosensors, which allows the immobilization of receptor proteins on the surface of waveguide directly without any additional modification. A sol-gel process based on a mixture of three precursors was employed to prepare a liquid hybrid polysiloxane, which was photopatternable for the photocuring process and UV imprint. Waveguide films were prepared on silicon substrates by spin coating and characterized by atomic force microscopy for roughness, and protein adsorption. The results showed that the surface of the polymer film was smooth (rms = 0.658 nm), and exhibited a moderate hydrophobicity with the water contact angle of 97°. Such a hydrophobic extent could provide a necessary binding strength for stable immobilization of proteins on the material surface in various sensing conditions. Biological activity of the immobilized Staphylococcal protein A and its corresponding biosensing performance were demonstrated by its specific recognition of human Immunoglobulin G. This study showed the potential of preparing dense, homogeneous, specific, and stable biosensing surfaces by immobilizing receptor proteins on polymer-based optical devices through the direct physical adsorption method. We expect that such polymer waveguide could be of special interest in developing low-cost and robust optical biosensing platform for multidimensional arrays.
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Affiliation(s)
- Jun Ren
- School of Life Science and Biotechnology, Dalian University of Technology, No. 2 Linggong Road, Dalian 116023, PR China
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Trilling AK, Beekwilder J, Zuilhof H. Antibody orientation on biosensor surfaces: a minireview. Analyst 2013; 138:1619-27. [DOI: 10.1039/c2an36787d] [Citation(s) in RCA: 301] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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