101
|
Arvand M, Sayyar Ardaki M. Poly- l -cysteine/electrospun copper oxide nanofibers-zinc oxide nanoparticles nanocomposite as sensing element of an electrochemical sensor for simultaneous determination of adenine and guanine in biological samples and evaluation of damage to dsDNA and DNA purine bases by UV radiation. Anal Chim Acta 2017; 986:25-41. [DOI: 10.1016/j.aca.2017.07.057] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/20/2017] [Accepted: 07/24/2017] [Indexed: 12/14/2022]
|
102
|
Gonzalez Garcia LE, MacGregor-Ramiasa M, Visalakshan RM, Vasilev K. Protein Interactions with Nanoengineered Polyoxazoline Surfaces Generated via Plasma Deposition. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:7322-7331. [PMID: 28658956 DOI: 10.1021/acs.langmuir.7b01279] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Protein adsorption to biomaterials is critical in determining their suitability for specific applications, such as implants or biosensors. Here, we show that surface nanoroughness can be tailored to control the covalent binding of proteins to plasma-deposited polyoxazoline (PPOx). Nanoengineered surfaces were created by immobilizing gold nanoparticles varying in size and surface density on PPOx films. To keep the surface chemistry consistent while preserving the nanotopography, all substrates were overcoated with a nanothin PPOx film. Bovine serum albumin was chosen to study protein interactions with the nanoengineered surfaces. The results demonstrate that the amount of protein bound to the surface is not directly correlated with the increase in surface area. Instead, it is determined by nanotopography-induced geometric effects and surface wettability. A densely packed array of 16 and 38 nm nanoparticles hinders protein adsorption compared to smooth PPOx substrates, while it increases for 68 nm nanoparticles. These adaptable surfaces could be used for designing biomaterials where proteins adsorption is or is not desirable.
Collapse
Affiliation(s)
- Laura E Gonzalez Garcia
- School of Engineering, Future Industries Institute, University of South Australia, Mawson Lakes Campus , Mawson Lakes, South Australia 5095, Australia
| | - Melanie MacGregor-Ramiasa
- School of Engineering, Future Industries Institute, University of South Australia, Mawson Lakes Campus , Mawson Lakes, South Australia 5095, Australia
| | - Rahul Madathiparambil Visalakshan
- School of Engineering, Future Industries Institute, University of South Australia, Mawson Lakes Campus , Mawson Lakes, South Australia 5095, Australia
| | - Krasimir Vasilev
- School of Engineering, Future Industries Institute, University of South Australia, Mawson Lakes Campus , Mawson Lakes, South Australia 5095, Australia
| |
Collapse
|
103
|
Márquez A, Kocsis K, Zickler G, Bourret GR, Feinle A, Hüsing N, Himly M, Duschl A, Berger T, Diwald O. Enzyme adsorption-induced activity changes: a quantitative study on TiO 2 model agglomerates. J Nanobiotechnology 2017; 15:55. [PMID: 28732539 PMCID: PMC5521066 DOI: 10.1186/s12951-017-0283-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 06/16/2017] [Indexed: 11/17/2022] Open
Abstract
Background Activity retention upon enzyme adsorption on inorganic nanostructures depends on different system parameters such as structure and composition of the support, composition of the medium as well as enzyme loading. Qualitative and quantitative characterization work, which aims at an elucidation of the microscopic details governing enzymatic activity, requires well-defined model systems. Results Vapor phase-grown and thermally processed anatase TiO2 nanoparticle powders were transformed into aqueous particle dispersions and characterized by dynamic light scattering and laser Doppler electrophoresis. Addition of β-galactosidase (β-gal) to these dispersions leads to complete enzyme adsorption and the generation of β-gal/TiO2 heteroaggregates. For low enzyme loadings (~4% of the theoretical monolayer coverage) we observed a dramatic activity loss in enzymatic activity by a factor of 60–100 in comparison to that of the free enzyme in solution. Parallel ATR-IR-spectroscopic characterization of β-gal/TiO2 heteroaggregates reveals an adsorption-induced decrease of the β-sheet content and the formation of random structures leading to the deterioration of the active site. Conclusions The study underlines that robust qualitative and quantitative statements about enzyme adsorption and activity retention require the use of model systems such as anatase TiO2 nanoparticle agglomerates featuring well-defined structural and compositional properties. Electronic supplementary material The online version of this article (doi:10.1186/s12951-017-0283-4) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Augusto Márquez
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg, Jakob-Haringer-Strasse 2a, 5020, Salzburg, Austria
| | - Krisztina Kocsis
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg, Jakob-Haringer-Strasse 2a, 5020, Salzburg, Austria
| | - Gregor Zickler
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg, Jakob-Haringer-Strasse 2a, 5020, Salzburg, Austria
| | - Gilles R Bourret
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg, Jakob-Haringer-Strasse 2a, 5020, Salzburg, Austria
| | - Andrea Feinle
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg, Jakob-Haringer-Strasse 2a, 5020, Salzburg, Austria
| | - Nicola Hüsing
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg, Jakob-Haringer-Strasse 2a, 5020, Salzburg, Austria
| | - Martin Himly
- Department of Molecular Biology, Paris Lodron University of Salzburg, Hellbrunnerstrasse 34/III, 5020, Salzburg, Austria.
| | - Albert Duschl
- Department of Molecular Biology, Paris Lodron University of Salzburg, Hellbrunnerstrasse 34/III, 5020, Salzburg, Austria
| | - Thomas Berger
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg, Jakob-Haringer-Strasse 2a, 5020, Salzburg, Austria.
| | - Oliver Diwald
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg, Jakob-Haringer-Strasse 2a, 5020, Salzburg, Austria
| |
Collapse
|
104
|
Chen W, Niu X, Li X, Li X, Li G, He B, Li Q, Sun W. Investigation on direct electrochemical and electrocatalytic behavior of hemoglobin on palladium-graphene modified electrode. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:135-140. [PMID: 28866148 DOI: 10.1016/j.msec.2017.05.129] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 05/17/2017] [Accepted: 05/20/2017] [Indexed: 11/25/2022]
Abstract
Palladium-graphene (Pd-GR) nanocomposite was acted as modifier for construction of the modified electrode with direct electrochemistry of hemoglobin (Hb) realized. By using Nafion as the immobilization film, Hb was fixed tightly on Pd-GR nanocomposite modified carbon ionic liquid electrode. Electrochemical behaviors of Hb modified electrode were checked by cyclic voltammetry and a pair of redox peaks originated from direct electron transfer of Hb was appeared. The Hb modified electrode had excellent electrocatalytic activity to the reduction of trichloroacetic acid and sodium nitrite in the concentration range from 0.6 to 13.0mmol·L-1 and from 0.04 to 0.5 mmol·L-1. Therefore Pd-GR nanocomposite was proven to be a good candidate for the fabrication of third-generation electrochemical biosensor.
Collapse
Affiliation(s)
- Wei Chen
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xueliang Niu
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Xiaoyan Li
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Xiaobao Li
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Guangjiu Li
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Bolin He
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Qiutong Li
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China
| | - Wei Sun
- Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; Key Laboratory of Soft Chemistry and Functional Materials of Ministry Education, College of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| |
Collapse
|
105
|
Zhao Y, Cieplak M. Structural Changes in Barley Protein LTP1 Isoforms at Air-Water Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4769-4780. [PMID: 28457129 DOI: 10.1021/acs.langmuir.7b00791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We use a coarse-grained model to study the conformational changes in two barley proteins, LTP1 and its ligand adduct isoform LTP1b, that result from their adsorption to the air-water interface. The model introduces the interface through hydropathy indices. We justify the model by all-atom simulations. The choice of the proteins is motivated by making attempts to understand formation and stability of foam in beer. We demonstrate that both proteins flatten out at the interface and can make a continuous stabilizing and denser film. We show that the degree of the flattening depends on the protein (the layers of LTP1b should be denser than those of LTP1) and on the presence of glycation. It also depends on the number (≤4) of the disulfide bonds in the proteins. The geometry of the proteins is sensitive to the specificity of the absent bonds. We provide estimates of the volume of cavities of the proteins when away from the interface.
Collapse
Affiliation(s)
- Yani Zhao
- Institute of Physics, Polish Academy of Sciences , Al. Lotników 32/46, 02-668 Warsaw, Poland
| | - Marek Cieplak
- Institute of Physics, Polish Academy of Sciences , Al. Lotników 32/46, 02-668 Warsaw, Poland
| |
Collapse
|
106
|
Adsorption/desorption study of proteins onto multi-walled carbon nanotubes and amino multi-walled carbon nanotubes surfaces as adsorbents. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.02.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
107
|
Márquez A, Berger T, Feinle A, Hüsing N, Himly M, Duschl A, Diwald O. Bovine Serum Albumin Adsorption on TiO 2 Colloids: The Effect of Particle Agglomeration and Surface Composition. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:2551-2558. [PMID: 28195734 DOI: 10.1021/acs.langmuir.6b03785] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Protein adsorption at nanostructured oxides strongly depends on the synthesis conditions and sample history of the material investigated. We measured the adsorption of bovine serum albumin (BSA) to commercial Aeroxide TiO2 P25 nanoparticles in aqueous dispersions. Significant changes in the adsorption capacity were induced by mild sample washing procedures and attributed to the structural modification of adsorbed water and surface hydroxyls. Motivated by the lack of information about the sample history of commercial TiO2 nanoparticle samples, we used vapor-phase-grown TiO2 nanoparticles, a well-established model system for adsorption and photocatalysis studies, and performed on this material for the first time a systematic and quantitative BSA adsorption study. After alternating vacuum and oxygen treatment of the nanoparticle powders at elevated temperatures for surface purification, we determined size distributions covering both the size of the individualized nanoparticles and nanoparticle agglomerates using transmission electron microscopy (TEM), X-ray diffraction (XRD), and dynamic light scattering (DLS) in an aqueous dispersion. Quantitative BSA adsorption measurements at different pH values and thus variable combinations of surface-charged proteins and TiO2 nanoparticles revealed a consistent picture: BSA adsorbs only at the outer agglomerate surfaces without penetrating the interior of the agglomerates. This process levels at coverages of single monolayers, which resist consecutive simple washing procedures. A detailed analysis of the protein-specific IR amide bands reveals that the adsorption-induced protein conformational change is associated with a decrease in the helical content. This study underlines that robust qualitative and quantitative statements about protein adsorption and corona formation require well-documented and controllable surface properties of the nanomaterials involved.
Collapse
Affiliation(s)
- Augusto Márquez
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg , Jakob-Haringer-Strasse 2a, A - 5020 Salzburg, Austria
| | - Thomas Berger
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg , Jakob-Haringer-Strasse 2a, A - 5020 Salzburg, Austria
| | - Andrea Feinle
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg , Jakob-Haringer-Strasse 2a, A - 5020 Salzburg, Austria
| | - Nicola Hüsing
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg , Jakob-Haringer-Strasse 2a, A - 5020 Salzburg, Austria
| | - Martin Himly
- Department of Molecular Biology, Paris Lodron University of Salzburg , Hellbrunnerstrasse 34/III, A - 5020 Salzburg, Austria
| | - Albert Duschl
- Department of Molecular Biology, Paris Lodron University of Salzburg , Hellbrunnerstrasse 34/III, A - 5020 Salzburg, Austria
| | - Oliver Diwald
- Department of Chemistry and Physics of Materials, Paris Lodron University of Salzburg , Jakob-Haringer-Strasse 2a, A - 5020 Salzburg, Austria
| |
Collapse
|
108
|
Kamil Reza K, Wang J, Vaidyanathan R, Dey S, Wang Y, Trau M. Electrohydrodynamic-Induced SERS Immunoassay for Extensive Multiplexed Biomarker Sensing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1602902. [PMID: 28004880 DOI: 10.1002/smll.201602902] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 11/11/2016] [Indexed: 05/22/2023]
Abstract
Cancer diagnosis and patient monitoring require sensitive and simultaneous measurement of multiple cancer biomarkers considering that single biomarker analysis present inadequate information on the underlying biological transformations. Thus, development of sensitive and selective assays for multiple biomarker detection might improve clinical diagnosis and expedite the treatment process. Herein, a microfluidic platform for the rapid, sensitive, and parallel detection of multiple cancer-specific protein biomarkers from complex biological samples is presented. This approach utilizes alternating current electrohydrodynamic-induced surface shear forces that provide exquisite control over fluid flow thereby enhancing target-sensor interactions and minimizing non-specific binding. Further, the use of surface-enhanced Raman scattering-based spectral encoding with individual barcodes for different targets enables specific and simultaneous detection of captured protein biomarkers. Using this approach, the specific and sensitive detection of clinically relevant biomarkers including human epidermal growth factor receptor 2 (HER2); Mucin 1, cell surface associated (MUC1); epidermal growth factor receptor; and Mucin 16, cell surface associated (MUC16) at concentrations as low as 10 fg mL-1 in patient serum is demonstrated. Successful target detection from patient samples further demonstrates the potential of this current approach for the clinical diagnosis, which envisages a clinical translation for a rapid and sensitive appraisal of clinical samples in cancer diagnostics.
Collapse
Affiliation(s)
- Khondakar Kamil Reza
- Centre for Personalised Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Corner College and Cooper Roads (Bldg 75), Brisbane, QLD, 4072, Australia
| | - Jing Wang
- Centre for Personalised Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Corner College and Cooper Roads (Bldg 75), Brisbane, QLD, 4072, Australia
| | - Ramanathan Vaidyanathan
- Centre for Personalised Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Corner College and Cooper Roads (Bldg 75), Brisbane, QLD, 4072, Australia
| | - Shuvashis Dey
- Centre for Personalised Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Corner College and Cooper Roads (Bldg 75), Brisbane, QLD, 4072, Australia
| | - Yuling Wang
- Centre for Personalised Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Corner College and Cooper Roads (Bldg 75), Brisbane, QLD, 4072, Australia
| | - Matt Trau
- Centre for Personalised Nanomedicine, Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Corner College and Cooper Roads (Bldg 75), Brisbane, QLD, 4072, Australia
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| |
Collapse
|
109
|
Emerging Cytokine Biosensors with Optical Detection Modalities and Nanomaterial-Enabled Signal Enhancement. SENSORS 2017; 17:s17020428. [PMID: 28241443 PMCID: PMC5335944 DOI: 10.3390/s17020428] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/12/2017] [Accepted: 02/18/2017] [Indexed: 12/17/2022]
Abstract
Protein biomarkers, especially cytokines, play a pivotal role in the diagnosis and treatment of a wide spectrum of diseases. Therefore, a critical need for advanced cytokine sensors has been rapidly growing and will continue to expand to promote clinical testing, new biomarker development, and disease studies. In particular, sensors employing transduction principles of various optical modalities have emerged as the most common means of detection. In typical cytokine assays which are based on the binding affinities between the analytes of cytokines and their specific antibodies, optical schemes represent the most widely used mechanisms, with some serving as the gold standard against which all existing and new sensors are benchmarked. With recent advancements in nanoscience and nanotechnology, many of the recently emerging technologies for cytokine detection exploit various forms of nanomaterials for improved sensing capabilities. Nanomaterials have been demonstrated to exhibit exceptional optical properties unique to their reduced dimensionality. Novel sensing approaches based on the newly identified properties of nanomaterials have shown drastically improved performances in both the qualitative and quantitative analyses of cytokines. This article brings together the fundamentals in the literature that are central to different optical modalities developed for cytokine detection. Recent advancements in the applications of novel technologies are also discussed in terms of those that enable highly sensitive and multiplexed cytokine quantification spanning a wide dynamic range. For each highlighted optical technique, its current detection capabilities as well as associated challenges are discussed. Lastly, an outlook for nanomaterial-based cytokine sensors is provided from the perspective of optimizing the technologies for sensitivity and multiplexity as well as promoting widespread adaptations of the emerging optical techniques by lowering high thresholds currently present in the new approaches.
Collapse
|
110
|
Terävä J, Hokkanen E, Pihlasalo S. Nonspecific luminometric assay for monitoring protein adsorption efficiency and coverage on nanoparticles. NANOSCALE 2017; 9:2232-2239. [PMID: 28120986 DOI: 10.1039/c6nr08497d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nonspecific assays utilizing time-resolved luminescence resonance energy transfer (TR-LRET) are developed for two applications: to monitor protein adsorption efficiency and to assess the degree of surface coverage on the solid phase. We successfully measure the adsorption efficiency of non-sedimenting nanoparticles since this has been notoriously difficult to determine. Monitoring of the protein adsorption on nanoparticles does not require the nanoparticles with the adsorbed protein to be washed and it is based on the competitive adsorption between the non-adsorbed analyte protein and the acceptor-labeled protein to donor europium(iii) polystyrene nanoparticles. The application for assessing the degree of surface coverage is performed with the final coated and washed analyte nanoparticles and it requires no fluorescent labeling of the studied protein. This application utilizes the competitive adsorption of the acceptor-labeled protein on analyte nanoparticles partly covered with protein and donor europium(iii) polystyrene nanoparticles. The developed methods detect either non-adsorbed protein or uncovered nanoparticle surface, not the proteins adsorbed on the nanoparticles. This is not achievable with the traditional total protein quantification assays applied for monitoring protein adsorption since both non-adsorbed and adsorbed protein are detected and their separation is required. Thus, the developed application for monitoring protein adsorption is user-friendly, requires no centrifugal instrumentation, and is applicable also for small nanoparticles requiring ultracentrifugation. No special expertise or investment in costly instruments is required compared to the existing methods, such as spectroscopic techniques, isothermal titration calorimetry, and surface plasmon resonance. The application for assessing the degree of surface coverage is compared to a reference literature method that comprised the analysis of adsorbed fluorescently labeled protein. The saturation reached at similar protein concentrations showing the reliability of the assay. Our results suggest that the developed applications could be exploited as rapid tools for protein adsorption studies on nanoparticles and for quality control and characterization of the coating processes.
Collapse
Affiliation(s)
- J Terävä
- Department of Cell Biology and Anatomy, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, 20520 Turku, Finland and Molecular Biotechnology and Diagnostics, Department of Biochemistry, Tykistökatu 6, 20520 Turku, Finland
| | - E Hokkanen
- Department of Cell Biology and Anatomy, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, 20520 Turku, Finland
| | - S Pihlasalo
- Department of Cell Biology and Anatomy, Institute of Biomedicine, University of Turku, Kiinamyllynkatu 10, 20520 Turku, Finland and Laboratory of Materials Chemistry and Chemical Analysis, Department of Chemistry, University of Turku, Vatselankatu 2, 20500 Turku, Finland.
| |
Collapse
|
111
|
McCann L, Benavidez TE, Holtsclaw S, Garcia CD. Addressing the distribution of proteins spotted on μPADs. Analyst 2017; 142:3899-3905. [DOI: 10.1039/c7an00849j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Adsorption is the most common approach to immobilize biorecognition elements on the surface of paper-based devices.
Collapse
Affiliation(s)
- Laura McCann
- Department of Chemistry
- Clemson University
- Clemson
- USA
| | | | | | | |
Collapse
|
112
|
Williams TA, Lee J, Diemler CA, Subir M. Magnetic vs. non-magnetic colloids – A comparative adsorption study to quantify the effect of dye-induced aggregation on the binding affinity of an organic dye. J Colloid Interface Sci 2016; 481:20-7. [DOI: 10.1016/j.jcis.2016.07.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 07/15/2016] [Accepted: 07/17/2016] [Indexed: 11/28/2022]
|
113
|
Sarauli D, Borowski A, Peters K, Schulz B, Fattakhova-Rohlfing D, Leimkühler S, Lisdat F. Investigation of the pH-Dependent Impact of Sulfonated Polyaniline on Bioelectrocatalytic Activity of Xanthine Dehydrogenase. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- David Sarauli
- Biosystems
Technology, Institute for Applied Life Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, D-15745, Wildau, Germany
- Department
of Chemistry and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität (LMU), Butenandtstraße 5-13 (E), D-81377, Munich, Germany
| | - Anja Borowski
- Biosystems
Technology, Institute for Applied Life Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, D-15745, Wildau, Germany
| | - Kristina Peters
- Department
of Chemistry and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität (LMU), Butenandtstraße 5-13 (E), D-81377, Munich, Germany
| | - Burkhard Schulz
- Institute
for Thin
Film and Microsensor Technologies, Kantstr. 55, D-14513 Teltow, Germany
| | - Dina Fattakhova-Rohlfing
- Department
of Chemistry and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität (LMU), Butenandtstraße 5-13 (E), D-81377, Munich, Germany
| | - Silke Leimkühler
- Institute
for Biochemistry and Biology, Department of Molecular Enzymology, University of Potsdam, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam, Germany
| | - Fred Lisdat
- Biosystems
Technology, Institute for Applied Life Sciences, Technical University of Applied Sciences Wildau, Hochschulring 1, D-15745, Wildau, Germany
| |
Collapse
|
114
|
Nanostructured platform integrated into a microfluidic immunosensor coupled to laser-induced fluorescence for the epithelial cancer biomarker determination. Microchem J 2016. [DOI: 10.1016/j.microc.2016.03.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
115
|
Spectrophotometric determination of mercury(II) ions based on their stimulation effect on the peroxidase-like activity of molybdenum disulfide nanosheets. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1886-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
|
116
|
Heo J, Hwang CS. Application of L-Aspartic Acid-Capped ZnS:Mn Colloidal Nanocrystals as a Photosensor for the Detection of Copper (II) Ions in Aqueous Solution. NANOMATERIALS 2016; 6:nano6050082. [PMID: 28335210 PMCID: PMC5302500 DOI: 10.3390/nano6050082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 04/14/2016] [Accepted: 04/25/2016] [Indexed: 11/30/2022]
Abstract
Water-dispersible ZnS:Mn nanocrystals (NCs) were synthesized by capping the surface with polar L-aspartic acid (Asp) molecules. The obtained ZnS:Mn-Asp NC product was optically and physically characterized using the corresponding spectroscopic methods. The ultra violet-visible (UV-VIS) absorption spectrum and photoluminescence (PL) emission spectrum of the NCs showed broad peaks at 320 and 590 nm, respectively. The average particle size measured from the obtained high resolution-transmission electron microscopy (HR-TEM) image was 5.25 nm, which was also in accordance with the Debye-Scherrer calculations using the X-ray diffraction (XRD) data. Moreover, the surface charge and degree of aggregation of the ZnS:Mn-Asp NCs were determined by electrophoretic and hydrodynamic light scattering methods, respectively. These results indicated the formation of agglomerates in water with an average size of 19.8 nm, and a negative surface charge (−4.58 mV) in water at ambient temperature. The negatively-charged NCs were applied as a photosensor for the detection of specific cations in aqueous solution. Accordingly, the ZnS:Mn-Asp NCs showed an exclusive luminescence quenching upon addition of copper (II) cations. The kinetic mechanism study on the luminescence quenching of the NCs by the addition of the Cu2+ ions proposed an energy transfer through the ionic binding between the two oppositely-charged ZnS:Mn-Asp NCs and Cu2+ ions.
Collapse
Affiliation(s)
- Jungho Heo
- Department of Chemistry, Dankook University, 152 Yongin-si, Suji-ku, Jukjeon-ro, Gyunggi-do 448-701, Korea.
| | - Cheong-Soo Hwang
- Department of Chemistry, Dankook University, 152 Yongin-si, Suji-ku, Jukjeon-ro, Gyunggi-do 448-701, Korea.
| |
Collapse
|
117
|
Tian Y, Li L, Han H, Wang W, Wang Y, Ye Z, Guo X. Modification of Spherical Polyelectrolyte Brushes by Layer-by-Layer Self-Assembly as Observed by Small Angle X-ray Scattering. Polymers (Basel) 2016; 8:E145. [PMID: 30979238 PMCID: PMC6432364 DOI: 10.3390/polym8040145] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 03/14/2016] [Accepted: 04/08/2016] [Indexed: 11/17/2022] Open
Abstract
Multilayer modified spherical polyelectrolyte brushes were prepared through alternate deposition of positively charged poly(allylamine hydrochloride) (PAH) and negatively charged poly-l-aspartic acid (PAsp) onto negatively charged spherical poly(acrylic acid) (PAA) brushes (SPBs) on a poly(styrene) core. The charge reversal determined by the zeta potential indicated the success of layer-by-layer (LBL) deposition. The change of the structure during the construction of multilayer modified SPBs was observed by small-angle X-ray scattering (SAXS). SAXS results indicated that some PAH chains were able to penetrate into the PAA brush for the PAA-PAH double-layer modified SPBs whereas part of the PAH moved towards the outer layer when the PAsp layer was loaded to form a PAA-PAH-PAsp triple-layer system. The multilayer modified SPBs were stable upon changing the pH (5 to 9) and ionic strength (1 to 100 mM). The triple-layer modified SPBs were more tolerated to high pH (even at 11) compared to the double-layer ones. SAXS is proved to be a powerful tool for studying the inner structure of multilayer modified SPBs, which can establish guidelines for the a range of potential applications of multilayer modified SPBs.
Collapse
Affiliation(s)
- Yuchuan Tian
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Li Li
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Haoya Han
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Weihua Wang
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Yunwei Wang
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Zhishuang Ye
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Xuhong Guo
- State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China.
- Engineering Research Center of Xinjiang Bingtuan of Materials Chemical Engineering, Shihezi University, Xinjiang 832000, China.
| |
Collapse
|
118
|
Chen X, Hai X, Wang J. Graphene/graphene oxide and their derivatives in the separation/isolation and preconcentration of protein species: A review. Anal Chim Acta 2016; 922:1-10. [PMID: 27154826 DOI: 10.1016/j.aca.2016.03.050] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Revised: 03/31/2016] [Accepted: 03/31/2016] [Indexed: 11/17/2022]
Abstract
The distinctive/unique electrical, chemical and optical properties make graphene/graphene oxide-based materials popular in the field of analytical chemistry. Its large surface offers excellent capacity to anchor target analyte, making it an powerful sorbent in the adsorption and preconcentration of trace level analyte of interest in the field of sample preparation. The large delocalized π-electron system of graphene framework provides strong affinity to species containing aromatic rings, such as proteins, and the abundant active sites on its surface offers the chance to modulate adsorption tendency towards specific protein via functional modification/decoration. This review provides an overview of the current research on graphene/graphene oxide-based materials as attractive and powerful adsorption media in the separation/isolation and preconcentration of protein species from biological sample matrixes. These practices are aiming at providing protein sample of high purity for further investigations and applications, or to achieve certain extent of enrichment prior to quantitative assay. In addition, the challenges and future perspectives in the related research fields have been discussed.
Collapse
Affiliation(s)
- Xuwei Chen
- Research Center for Analytical Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Xin Hai
- Research Center for Analytical Sciences, Northeastern University, Box 332, Shenyang 110819, China
| | - Jianhua Wang
- Research Center for Analytical Sciences, Northeastern University, Box 332, Shenyang 110819, China.
| |
Collapse
|
119
|
Castaing V, Álvarez-Martos I, Ferapontova EE. Wiring of Glucose Oxidizing Flavin Adenine Dinucleotide-Dependent Enzymes by Methylene Blue-Modified Third Generation Poly(amidoamine) Dendrimers Attached to Spectroscopic Graphite Electrodes. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.01.217] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
120
|
Nanocrystalline diamond sensor targeted for selective CRP detection: an ATR-FTIR spectroscopy study. Anal Bioanal Chem 2016; 408:3675-80. [PMID: 27007740 DOI: 10.1007/s00216-016-9485-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/02/2016] [Accepted: 03/10/2016] [Indexed: 10/22/2022]
Abstract
Protein immobilization on functionalized fluorine-terminated nanocrystalline (NCD) films was studied by attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy using an immobilization protocol developed to specifically bind C-reactive protein (CRP). Using an ATR-FTIR spectroscopy method employing a force-controlled anvil-type configuration, three critical steps of the ex situ CRP immobilization were analyzed. First, the NCD surface was passivated by deposition of a copolymer layer consisting of polyethylene oxide and polypropylene oxide. Second, a synthetic modified polypeptide binder with high affinity to CRP was covalently attached to the polymeric film. Third, CRP dissolved in aqueous buffer in concentrations of 10-20 μg/mL was added on the functionalized NCD surface. Both the amide I and II bands, due to the polypeptide binder and CRP, were clearly observed in ATR-FTIR spectra. CRP amide I bands were extracted from difference spectra and yielded bands that agreed well with the reported amide I band of free (non-bonded) CRP in solution. Thus, our results show that CRP retains its secondary structure when it is attached to the polypeptide binders. Compared to previous IR studies of CRP in solution, about 200 times lower concentration was applied in the present study. Graphical Abstract Direct non-destructive ATR-FTIR analysis of C-reactive protein (CRP) selectively bound to functionalized nanocrystalline diamond (NCD) sensor surface.
Collapse
|
121
|
Giuliani JG, Benavidez TE, Duran GM, Vinogradova E, Rios A, Garcia CD. Development and Characterization of Carbon Based Electrodes from Pyrolyzed Paper for Biosensing Applications. J Electroanal Chem (Lausanne) 2016; 765:8-15. [PMID: 27175108 PMCID: PMC4860743 DOI: 10.1016/j.jelechem.2015.07.055] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This article details the study of electrochemical behavior of new carbon electrodes based on pyrolysis of different paper sources to be used in biosensor applications. The resistivity of the pyrolyzed papers was initially used as screening parameters to select the best three paper samples (imaging card paper, multipurpose printing paper, and 3MM chromatography paper) and assemble working electrodes that were further characterized by a combination of microscopy, electrochemistry, and spectroscopy. Although slight differences in performance were observed, all carbon substrates fabricated from pyrolysis of paper allowed the development of competitive biosensors for uric acid. The presented results demonstrate the potential of these electrodes for sensing applications and highlight the potential advantages of 3MM chromatography paper as a substrate to fabricate electrodes by pyrolysis.
Collapse
Affiliation(s)
- Jason G. Giuliani
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | | | - Gema M. Duran
- Department of Analytical Chemistry and Food Technology, University of Castilla – La Mancha, Ciudad Real, Spain
| | - Ekaterina Vinogradova
- Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, TX 78249, USA
| | - Angel Rios
- Department of Analytical Chemistry and Food Technology, University of Castilla – La Mancha, Ciudad Real, Spain
| | - Carlos D. Garcia
- Department of Chemistry, Clemson University, Clemson, SC, 29634, USA
| |
Collapse
|
122
|
Physisorption of α-chymotrypsin on SiO2 and TiO2: A comparative study via experiments and molecular dynamics simulations. Biointerphases 2016; 11:011007. [DOI: 10.1116/1.4940701] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
123
|
Boskey AL, Villarreal-Ramirez E. Intrinsically disordered proteins and biomineralization. Matrix Biol 2016; 52-54:43-59. [PMID: 26807759 DOI: 10.1016/j.matbio.2016.01.007] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 01/19/2016] [Accepted: 01/19/2016] [Indexed: 01/21/2023]
Abstract
In vertebrates and invertebrates, biomineralization is controlled by the cell and the proteins they produce. A large number of these proteins are intrinsically disordered, gaining some secondary structure when they interact with their binding partners. These partners include the component ions of the mineral being deposited, the crystals themselves, the template on which the initial crystals form, and other intrinsically disordered proteins and peptides. This review speculates why intrinsically disordered proteins are so important for biomineralization, providing illustrations from the SIBLING (small integrin binding N-glycosylated) proteins and their peptides. It is concluded that the flexible structure, and the ability of the intrinsically disordered proteins to bind to a multitude of surfaces is crucial, but details on the precise-interactions, energetics and kinetics of binding remain to be determined.
Collapse
Affiliation(s)
- Adele L Boskey
- Musculoskeletal Integrity Program, Hospital for Special Surgery, New York, NY 10021, USA.
| | | |
Collapse
|
124
|
Zhao D, Yu Y, Xu C. A sensitive electrochemical immunosensor for the detection of human chorionic gonadotropin based on a hierarchical nanoporous AuAg alloy. RSC Adv 2016. [DOI: 10.1039/c5ra24300a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A sensitive immunosensor for hCG detection is designed based on assembling the antibody on graphene sheets and ionic liquid composite film. The HNP-AuAg alloy is used as hCG antibody carrier for the preparation of a highly sensitive immunosensor.
Collapse
Affiliation(s)
- Dianyun Zhao
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan
- China
| | - Yang Yu
- Shandong Product Quality Inspection Research Institute
- Jinan
- China
| | - Caixia Xu
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan
- China
| |
Collapse
|
125
|
Abstract
A simple and inexpensive method to fabricate a colloidal CdSe/ZnS quantum dots-modified paper-based assay for glucose is herein reported. The circular paper sheets were uniformly loaded and displayed strong fluorescence under a conventional hand-held UV lamp (365 nm). The assay is based on the use of glucose oxidase enzyme (GOx), which impregnated the paper sheets, producing H2O2 upon the reaction with the glucose contained in the samples. After 20 min of exposure, the fluorescence intensity changed due to the quenching caused by H2O2. To obtain a reading, the paper sheets were photographed under 365 nm excitation using a digital camera. Several parameters, including the amount of QD, sample pH, and amount of GOx were optimized to maximize the response to glucose. The paper-based assay showed a sigmoidal-shaped response with respect to the glucose concentration in the 5-200 mg·dL-1 range (limit of detection of 5 μg·dL-1), demonstrating their potential use for biomedical applications.
Collapse
|
126
|
Immobilization of inorganic pyrophosphatase on nanodiamond particles retaining its high enzymatic activity. Biointerphases 2015; 10:041005. [DOI: 10.1116/1.4934483] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
127
|
Benavidez TE, Wechsler ME, Farrer MM, Bizios R, Garcia CD. Electrochemically Preadsorbed Collagen Promotes Adult Human Mesenchymal Stem Cell Adhesion. Tissue Eng Part C Methods 2015; 22:69-75. [PMID: 26549607 DOI: 10.1089/ten.tec.2015.0315] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The present article reports on the effect of electric potential on the adsorption of collagen type I (the most abundant component of the organic phase of bone) onto optically transparent carbon electrodes (OTCE) and its mediation on subsequent adhesion of adult, human, mesenchymal stem cells (hMSCs). For this purpose, adsorption of collagen type I was investigated as a function of the protein concentration (0.01, 0.1, and 0.25 mg/mL) and applied potential (open circuit potential [OCP; control], +400, +800, and +1500 mV). The resulting substrate surfaces were characterized using spectroscopic ellipsometry, atomic force microscopy, and cyclic voltammetry. Adsorption of collagen type I onto OTCE was affected by the potential applied to the sorbent surface and the concentration of protein. The higher the applied potential and protein concentration, the higher the adsorbed amount (Γcollagen). It was also observed that the application of potential values higher than +800 mV resulted in the oxidation of the adsorbed protein. Subsequent adhesion of hMSCs on the OTCEs (precoated with the collagen type I films) under standard cell culture conditions for 2 h was affected by the extent of collagen preadsorbed onto the OTCE substrates. Specifically, enhanced hMSCs adhesion was observed when the Γcollagen was the highest. When the collagen type I was oxidized (under applied potential equal to +1500 mV), however, hMSCs adhesion was decreased. These results provide the first correlation between the effects of electric potential on protein adsorption and subsequent modulation of anchorage-dependent cell adhesion.
Collapse
Affiliation(s)
- Tomás E Benavidez
- 1 Department of Chemistry, Clemson University , Clemson, South Carolina
| | - Marissa E Wechsler
- 2 Department of Biomedical Engineering, The University of Texas at San Antonio , San Antonio, Texas
| | - Madeleine M Farrer
- 2 Department of Biomedical Engineering, The University of Texas at San Antonio , San Antonio, Texas
| | - Rena Bizios
- 2 Department of Biomedical Engineering, The University of Texas at San Antonio , San Antonio, Texas
| | - Carlos D Garcia
- 1 Department of Chemistry, Clemson University , Clemson, South Carolina
| |
Collapse
|
128
|
Carmona-Ribeiro AM, Prieto T, Nantes IL. Nanostructures for peroxidases. Front Mol Biosci 2015; 2:50. [PMID: 26389124 PMCID: PMC4558528 DOI: 10.3389/fmolb.2015.00050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 08/19/2015] [Indexed: 11/13/2022] Open
Abstract
Peroxidases are enzymes catalyzing redox reactions that cleave peroxides. Their active redox centers have heme, cysteine thiols, selenium, manganese, and other chemical moieties. Peroxidases and their mimetic systems have several technological and biomedical applications such as environment protection, energy production, bioremediation, sensors and immunoassays design, and drug delivery devices. The combination of peroxidases or systems with peroxidase-like activity with nanostructures such as nanoparticles, nanotubes, thin films, liposomes, micelles, nanoflowers, nanorods and others is often an efficient strategy to improve catalytic activity, targeting, and reusability.
Collapse
Affiliation(s)
- Ana M Carmona-Ribeiro
- Biocolloids Laboratory, Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo São Paulo, Brazil
| | - Tatiana Prieto
- NanoBioMav, Centro de Ciências Naturais e Humanas, Universidade Federal do ABC Santo André, Brazil
| | - Iseli L Nantes
- NanoBioMav, Centro de Ciências Naturais e Humanas, Universidade Federal do ABC Santo André, Brazil
| |
Collapse
|
129
|
Li X, Zhao T, Sun L, Aifantis KE, Fan Y, Feng Q, Cui F, Watari F. The applications of conductive nanomaterials in the biomedical field. J Biomed Mater Res A 2015; 104:322-39. [PMID: 26179845 DOI: 10.1002/jbm.a.35537] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 06/23/2015] [Accepted: 06/26/2015] [Indexed: 12/28/2022]
Abstract
As their name suggests, conductive nanomaterials (CNMs) are a type of functional materials, which not only have a high surface area to volume ratio, but also possess excellent conductivity. Thus far, CNMs have been widely used in biomedical applications, such as effectively transferring electrical signals, and providing a large surface area to adsorb proteins and induce cellular functions. Recent works propose further applications of CNMs in biosensors, tissue engineering, neural probes, and drug delivery. This review focuses on common types of CNMs and elaborates on their unique properties, which indicate that such CNMs have a potential to develop into a class of indispensable biomaterials for the diagnosis and therapy of human diseases.
Collapse
Affiliation(s)
- Xiaoming Li
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Tianxiao Zhao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Lianwen Sun
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Katerina E Aifantis
- Department of Civil Engineering-Engineering Mechanics, University of Arizona, Tucson, Arizona, 85721
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Qingling Feng
- State Key Laboratory of New Ceramic and Fine Processing, Tsinghua University, Beijing, 100084, China
| | - Fuzhai Cui
- State Key Laboratory of New Ceramic and Fine Processing, Tsinghua University, Beijing, 100084, China
| | - Fumio Watari
- Department of Biomedical Materials and Engineering, Graduate School of Dental Medicine, Hokkaido University, Sapporo, 060-8586, Japan
| |
Collapse
|
130
|
An effective and in-situ method based tresyl-functionalized porous polymer material for enrichment and digestion of membrane proteins and its application in extraction tips. Anal Chim Acta 2015; 880:77-83. [DOI: 10.1016/j.aca.2015.04.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 03/25/2015] [Accepted: 04/16/2015] [Indexed: 11/21/2022]
|
131
|
Nonenzymatic amperometric sensing of glucose using a glassy carbon electrode modified with a nanocomposite consisting of reduced graphene oxide decorated with Cu2O nanoclusters. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1501-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
132
|
Analysis of protein coatings on gold nanoparticles by XPS and liquid-based particle sizing techniques. Biointerphases 2015; 10:019012. [DOI: 10.1116/1.4913566] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
133
|
Yang Z, Chaieb S, Hemar Y, de Campo L, Rehm C, McGillivray DJ. Investigating linear and nonlinear viscoelastic behaviour and microstructures of gelatin-multiwalled carbon nanotube composites. RSC Adv 2015. [DOI: 10.1039/c5ra22744e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The linear and nonlinear rheology of physically-crosslinked-gelatin gel-multiwalled carbon nanotube (MWNT), chemically-crosslinked-gelatin gel-MWNT, and chemically–physically-crosslinked-gelatin gel-MWNT composites, are investigated.
Collapse
Affiliation(s)
- Zhi Yang
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Sahraoui Chaieb
- Division of Physical Sciences and Engineering
- King Abdullah University of Science and Technology (KAUST)
- Thuwal
- Kingdom of Saudi Arabia
| | - Yacine Hemar
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
- The Riddet Institute
| | - Liliana de Campo
- Bragg Institute
- Australian Nuclear Science and Technology Organisation
- Kirrawee DC
- Australia
| | - Christine Rehm
- Bragg Institute
- Australian Nuclear Science and Technology Organisation
- Kirrawee DC
- Australia
| | - Duncan J. McGillivray
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology
| |
Collapse
|