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Mishra A, Agrawal M, Ali A, Garg P. Uninterrupted real-time cerebral stress level monitoring using wearable biosensors: A review. Biotechnol Appl Biochem 2023; 70:1895-1914. [PMID: 37455443 DOI: 10.1002/bab.2491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 06/15/2023] [Indexed: 07/18/2023]
Abstract
Stress is the major unseen bug for the health of humans with the increasing workaholic era. Long periods of avoidance are the main precursor for chronic disorders that are quite tough to treat. As precaution is better than cure, stress detection and monitoring are vital. Although there are ways to measure stress clinically, there is still a constant need and demand for methods that measure stress personally and in an ex vitro manner for the convenience of the user. The concept of continuous stress monitoring has been introduced to tackle the issue of unseen stress accumulating in the body simultaneously with being user-friendly and reliable. Stress biosensors nowadays provide real-time, noninvasive, and continuous monitoring of stress. These biosensors are innovative anthropogenic creations that are a combination of biomarkers and indicators like heart rate variation, electrodermal activity, skin temperature, galvanic skin response, and electroencephalograph of stress in the body along with machine learning algorithms and techniques. The collaboration of biological markers, artificial intelligence techniques, and data science tools makes stress biosensors a hot topic for research. These attributes have made continuous stress detection a possibility with ease. The advancement in stress biosensing technologies has made a great impact on the lives of human beings so far. This article focuses on the comprehensive study of stress-indicating biomarkers and the techniques along with principles of the biosensors used for continuous stress detection. The precise overview of wearable stress monitoring systems is also sectioned to pave a pathway for possible future research studies.
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Affiliation(s)
- Anuja Mishra
- Department of Biotechnology, Institute of Applied Science & Humanities, GLA University, Mathura, Uttar Pradesh, India
| | - Mukti Agrawal
- Department of Biotechnology, Institute of Applied Science & Humanities, GLA University, Mathura, Uttar Pradesh, India
| | - Aaliya Ali
- School of Applied Sciences and Biotechnology, Shoolini University, Solan, Himachal Pradesh, India
- Center for Omics and Biodiversity Research, Shoolini University, Solan, Himachal Pradesh, India
| | - Prakrati Garg
- School of Applied Sciences and Biotechnology, Shoolini University, Solan, Himachal Pradesh, India
- Center for Omics and Biodiversity Research, Shoolini University, Solan, Himachal Pradesh, India
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Hashem A, Hossain MAM, Marlinda AR, Mamun MA, Sagadevan S, Shahnavaz Z, Simarani K, Johan MR. Nucleic acid-based electrochemical biosensors for rapid clinical diagnosis: advances, challenges, and opportunities. Crit Rev Clin Lab Sci 2022. [PMID: 34851806 DOI: 10.1016/j.apsadv.2021.100064] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Clinical diagnostic tests should be quick, reliable, simple to perform, and affordable for diagnosis and treatment of diseases. In this regard, owing to their novel properties, biosensors have attracted the attention of scientists as well as end-users. They are efficient, stable, and relatively cheap. Biosensors have broad applications in medical diagnosis, including point-of-care (POC) monitoring, forensics, and biomedical research. The electrochemical nucleic acid (NA) biosensor, the latest invention in this field, combines the sensitivity of electroanalytical methods with the inherent bioselectivity of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). The NA biosensor exploits the affinity of single-stranded DNA/RNA for its complementary strand and is used to detect complementary sequences of NA based on hybridization. After the NA component in the sensor detects the analyte, a catalytic reaction or binding event that generates an electrical signal in the transducer ensues. Since 2000, much progress has been made in this field, but there are still numerous challenges. This critical review describes the advances, challenges, and prospects of NA-based electrochemical biosensors for clinical diagnosis. It includes the basic principles, classification, sensing enhancement strategies, and applications of biosensors as well as their advantages, limitations, and future prospects, and thus it should be useful to academics as well as industry in the improvement and application of EC NA biosensors.
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Affiliation(s)
- Abu Hashem
- Nanotechnology and Catalysis Research Centre, Institute for Advanced Studies, University of Malaya, Kuala Lumpur, Malaysia
- Microbial Biotechnology Division, National Institute of Biotechnology, Dhaka, Bangladesh
| | - M A Motalib Hossain
- Nanotechnology and Catalysis Research Centre, Institute for Advanced Studies, University of Malaya, Kuala Lumpur, Malaysia
| | - Ab Rahman Marlinda
- Nanotechnology and Catalysis Research Centre, Institute for Advanced Studies, University of Malaya, Kuala Lumpur, Malaysia
| | - Mohammad Al Mamun
- Nanotechnology and Catalysis Research Centre, Institute for Advanced Studies, University of Malaya, Kuala Lumpur, Malaysia
- Department of Chemistry, Jagannath University, Dhaka, Bangladesh
| | - Suresh Sagadevan
- Nanotechnology and Catalysis Research Centre, Institute for Advanced Studies, University of Malaya, Kuala Lumpur, Malaysia
| | - Zohreh Shahnavaz
- Nanotechnology and Catalysis Research Centre, Institute for Advanced Studies, University of Malaya, Kuala Lumpur, Malaysia
| | - Khanom Simarani
- Department of Microbiology, Institute of Biological Sciences, Faculty of Sciences, University of Malaya, Kuala Lumpur, Malaysia
| | - Mohd Rafie Johan
- Nanotechnology and Catalysis Research Centre, Institute for Advanced Studies, University of Malaya, Kuala Lumpur, Malaysia
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Dutta S, Corni S, Brancolini G. Atomistic Simulations of Functionalized Nano-Materials for Biosensors Applications. Int J Mol Sci 2022; 23:1484. [PMID: 35163407 PMCID: PMC8835741 DOI: 10.3390/ijms23031484] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 12/24/2022] Open
Abstract
Nanoscale biosensors, a highly promising technique in clinical analysis, can provide sensitive yet label-free detection of biomolecules. The spatial and chemical specificity of the surface coverage, the proper immobilization of the bioreceptor as well as the underlying interfacial phenomena are crucial elements for optimizing the performance of a biosensor. Due to experimental limitations at the microscopic level, integrated cross-disciplinary approaches that combine in silico design with experimental measurements have the potential to present a powerful new paradigm that tackles the issue of developing novel biosensors. In some cases, computational studies can be seen as alternative approaches to assess the microscopic working mechanisms of biosensors. Nonetheless, the complex architecture of a biosensor, associated with the collective contribution from "substrate-receptor-analyte" conjugate in a solvent, often requires extensive atomistic simulations and systems of prohibitive size which need to be addressed. In silico studies of functionalized surfaces also require ad hoc force field parameterization, as existing force fields for biomolecules are usually unable to correctly describe the biomolecule/surface interface. Thus, the computational studies in this field are limited to date. In this review, we aim to introduce fundamental principles that govern the absorption of biomolecules onto functionalized nanomaterials and to report state-of-the-art computational strategies to rationally design nanoscale biosensors. A detailed account of available in silico strategies used to drive and/or optimize the synthesis of functionalized nanomaterials for biosensing will be presented. The insights will not only stimulate the field to rationally design functionalized nanomaterials with improved biosensing performance but also foster research on the required functionalization to improve biomolecule-surface complex formation as a whole.
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Affiliation(s)
- Sutapa Dutta
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (S.D.); (S.C.)
- Institute of Nanoscience, CNR-NANO S3, Via G. Campi 213/A, 41125 Modena, Italy
| | - Stefano Corni
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131 Padova, Italy; (S.D.); (S.C.)
- Institute of Nanoscience, CNR-NANO S3, Via G. Campi 213/A, 41125 Modena, Italy
| | - Giorgia Brancolini
- Institute of Nanoscience, CNR-NANO S3, Via G. Campi 213/A, 41125 Modena, Italy
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Fatima A, Younas I, Ali MW. An Overview on Recent Advances in Biosensor Technology and its Future Application. ARCHIVES OF PHARMACY PRACTICE 2022. [DOI: 10.51847/ltogi43jil] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Lim S, Kuang Y, Ardoña HAM. Evolution of Supramolecular Systems Towards Next-Generation Biosensors. Front Chem 2021; 9:723111. [PMID: 34490210 PMCID: PMC8416679 DOI: 10.3389/fchem.2021.723111] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 08/09/2021] [Indexed: 11/17/2022] Open
Abstract
Supramolecular materials, which rely on dynamic non-covalent interactions, present a promising approach to advance the capabilities of currently available biosensors. The weak interactions between supramolecular monomers allow for adaptivity and responsiveness of supramolecular or self-assembling systems to external stimuli. In many cases, these characteristics improve the performance of recognition units, reporters, or signal transducers of biosensors. The facile methods for preparing supramolecular materials also allow for straightforward ways to combine them with other functional materials and create multicomponent sensors. To date, biosensors with supramolecular components are capable of not only detecting target analytes based on known ligand affinity or specific host-guest interactions, but can also be used for more complex structural detection such as chiral sensing. In this Review, we discuss the advancements in the area of biosensors, with a particular highlight on the designs of supramolecular materials employed in analytical applications over the years. We will first describe how different types of supramolecular components are currently used as recognition or reporter units for biosensors. The working mechanisms of detection and signal transduction by supramolecular systems will be presented, as well as the important hierarchical characteristics from the monomers to assemblies that contribute to selectivity and sensitivity. We will then examine how supramolecular materials are currently integrated in different types of biosensing platforms. Emerging trends and perspectives will be outlined, specifically for exploring new design and platforms that may bring supramolecular sensors a step closer towards practical use for multiplexed or differential sensing, higher throughput operations, real-time monitoring, reporting of biological function, as well as for environmental studies.
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Affiliation(s)
- Sujeung Lim
- Department of Chemical and Biomolecular Engineering, Samueli School of Engineering, University of California, Irvine, Irvine, CA, United States
| | - Yuyao Kuang
- Department of Chemical and Biomolecular Engineering, Samueli School of Engineering, University of California, Irvine, Irvine, CA, United States
| | - Herdeline Ann M Ardoña
- Department of Chemical and Biomolecular Engineering, Samueli School of Engineering, University of California, Irvine, Irvine, CA, United States.,Department of Biomedical Engineering, Samueli School of Engineering, University of California, Irvine, Irvine, CA, United States.,Department of Chemistry, School of Physical Sciences, University of California, Irvine, Irvine, CA, United States.,Sue & Bill Gross Stem Cell Research Center, University of California, Irvine, Irvine, CA, United States
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Mikuła E. Recent Advancements in Electrochemical Biosensors for Alzheimer's Disease Biomarkers Detection. Curr Med Chem 2021; 28:4049-4073. [PMID: 33176635 PMCID: PMC8287894 DOI: 10.2174/0929867327666201111141341] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 09/28/2020] [Accepted: 10/07/2020] [Indexed: 02/06/2023]
Abstract
Background It is estimated that the average time between the diagnosis of Alzheimer’s disease (AD) and the patient’s death is 5-9 years. Therefore, both the initial phase of the disease and the preclinical state can be included in the critical period in disease diagnosis. Accordingly, huge progress has recently been observed in biomarker research to identify risk factors for dementia in older people with normal cognitive functions and mild cognitive impairments. Methods Electrochemical biosensors are excellent analytical tools that are used in the detection of AD biomarkers as they are easy to use, portable, and can do analysis in real time. Results This review presents the analytical techniques currently used to determine AD biomarkers in terms of their advantages and disadvantages; the most important clinical biomarkers of AD and their role in the disease. All recently used biorecognition molecules in electrochemical biosensor development, i.e., receptor protein, antibodies, aptamers and nucleic acids, are summarized for the first time. Novel electrochemical biosensors for AD biomarker detection, as ideal analytical platforms for point-of-care diagnostics, are also reviewed. Conclusion The article focuses on various strategies of biosensor chemical surface modifications to immobilize biorecognition molecules, enabling specific, quantitative AD biomarker detection in synthetic and clinical samples. In addition, this is the first review that presents innovative single-platform systems for simultaneous detection of multiple biomarkers and other important AD-associated biological species based on electrochemical techniques. The importance of these platforms in disease diagnosis is discussed.
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Affiliation(s)
- Edyta Mikuła
- Department of Biosensors, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland
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Woo S, Park HR, Park J, Yi J, Hwang W. Robust and continuous oil/water separation with superhydrophobic glass microfiber membrane by vertical polymerization under harsh conditions. Sci Rep 2020; 10:21413. [PMID: 33293602 PMCID: PMC7722867 DOI: 10.1038/s41598-020-78271-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/17/2020] [Indexed: 11/24/2022] Open
Abstract
We report a robust and continuous oil/water separation with nanostructured glass microfiber (GMF) membranes modified by oxygen plasma treatment and self-assembled monolayer coating with vertical polymerization. The modified GMF membrane had a nanostructured surface and showed excellent superhydrophobicity. With an appropriate membrane thickness, a high water intrusion pressure (< 62.7 kPa) was achieved for continuous pressure-driven separation of oil/water mixtures with high flux (< 4418 L h-1 m-2) and high oil purity (> 99%). Under simulated industrial conditions, the modified GMF membrane exhibited robust chemical stability against strong acidic/alkaline solutions and corrosive environments. The proposed superhydrophobic composite coating technique is simple, low cost, environmentally friendly, and suitable for the mass production of scalable three-dimensional surfaces. Moreover, its stability and customizable functionality offers considerable potential for a wide range of novel applications.
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Affiliation(s)
- Seeun Woo
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Hong Ryul Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Jinyoung Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Johan Yi
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Woonbong Hwang
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea.
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Burmistrova NA, Krivets OO, Monakhova YB. UV Spectroscopic Determination of Aloin in Aloe vera (A. vera) Samples Based on Chemometric Data Processing. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820070047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Minamiki T, Ichikawa Y, Kurita R. The Power of Assemblies at Interfaces: Nanosensor Platforms Based on Synthetic Receptor Membranes. SENSORS (BASEL, SWITZERLAND) 2020; 20:E2228. [PMID: 32326464 PMCID: PMC7218865 DOI: 10.3390/s20082228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/06/2020] [Accepted: 04/09/2020] [Indexed: 11/17/2022]
Abstract
Synthetic sensing materials (artificial receptors) are some of the most attractive components of chemical/biosensors because of their long-term stability and low cost of production. However, the strategy for the practical design of these materials toward specific molecular recognition in water is not established yet. For the construction of artificial material-based chemical/biosensors, the bottom-up assembly of these materials is one of the effective methods. This is because the driving forces of molecular recognition on the receptors could be enhanced by the integration of such kinds of materials at the 'interfaces', such as the boundary portion between the liquid and solid phases. Additionally, the molecular assembly of such self-assembled monolayers (SAMs) can easily be installed in transducer devices. Thus, we believe that nanosensor platforms that consist of synthetic receptor membranes on the transducer surfaces can be applied to powerful tools for high-throughput analyses of the required targets. In this review, we briefly summarize a comprehensive overview that includes the preparation techniques for molecular assemblies, the characterization methods of the interfaces, and a few examples of receptor assembly-based chemical/biosensing platforms on each transduction mechanism.
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Affiliation(s)
- Tsukuru Minamiki
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan;
- DAILAB, DBT-AIST International Center for Translational and Environmental Research (DAICENTER), National Institute of Advanced Industrial Science and Technology (AIST), Central 5-41, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Yuki Ichikawa
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan;
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
| | - Ryoji Kurita
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan;
- DAILAB, DBT-AIST International Center for Translational and Environmental Research (DAICENTER), National Institute of Advanced Industrial Science and Technology (AIST), Central 5-41, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan
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Hetemi D, Noël V, Pinson J. Grafting of Diazonium Salts on Surfaces: Application to Biosensors. BIOSENSORS-BASEL 2020; 10:bios10010004. [PMID: 31952195 PMCID: PMC7168266 DOI: 10.3390/bios10010004] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/07/2020] [Accepted: 01/09/2020] [Indexed: 01/31/2023]
Abstract
This review is divided into two parts; the first one summarizes the main features of surface modification by diazonium salts with a focus on most recent advances, while the second part deals with diazonium-based biosensors including small molecules of biological interest, proteins, and nucleic acids.
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Affiliation(s)
- Dardan Hetemi
- Pharmacy Department, Medical Faculty, University of Prishtina, “Hasan Prishtina”, Rr. “Dëshmorët e Kombit” p.n., 10000 Prishtina, Kosovo;
| | - Vincent Noël
- Université de Paris, ITODYS, CNRS, UMR 7086, 15 rue J-A de Baïf, F-75013 Paris, France;
| | - Jean Pinson
- Université de Paris, ITODYS, CNRS, UMR 7086, 15 rue J-A de Baïf, F-75013 Paris, France;
- Correspondence:
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D-shaped plastic optical fibre aptasensor for fast thrombin detection in nanomolar range. Sci Rep 2019; 9:18740. [PMID: 31822733 PMCID: PMC6904456 DOI: 10.1038/s41598-019-55248-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 10/31/2019] [Indexed: 12/20/2022] Open
Abstract
The development of optical biosensors for the rapid and costless determination of clinical biomarkers is of paramount importance in medicine. Here we report a fast and low-cost biosensor based on a plasmonic D-shaped plastic optical fibre (POF) sensor derivatized with an aptamer specific for the recognition of thrombin, the target marker of blood homeostasis and coagulation cascade. In particular, we designed a functional interface based on a Self Assembled Monolayer (SAM) composed of short Poly Ethylene Glycol (PEG) chains and biotin-modified PEG thiol in ratio 8:2 mol:mol, these latter serving as baits for the binding of the aptamer through streptavidin-chemistry. The SAM was studied by X-ray Photoelectron Spectroscopy (XPS) analysis, static contact angle (CA), Surface Plasmon Resonance (SPR) in POFs, and fluorescence microscopy on gold surface. The optimized SAM composition enabled the immobilization of about 112 ng/cm2 of aptamer. The thrombin detection exploiting POF-Aptasensor occurred in short times (5–10 minutes), the reached Limit of Detection (LOD) was about 1 nM, and the detection range was 1.6–60 nM, indicating the POF-Aptasensor well addresses the needs for a low-cost, simple to use and to realize, rapid, small size and portable diagnostic platform.
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Prajapati DG, Kandasubramanian B. Progress in the Development of Intrinsically Conducting Polymer Composites as Biosensors. MACROMOL CHEM PHYS 2019; 220:1800561. [PMID: 32327916 PMCID: PMC7168478 DOI: 10.1002/macp.201800561] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/25/2019] [Indexed: 12/22/2022]
Abstract
Biosensors are analytical devices which find extensive applications in fields such as the food industry, defense sector, environmental monitoring, and in clinical diagnosis. Similarly, intrinsically conducting polymers (ICPs) and their composites have lured immense interest in bio-sensing due to their various attributes like compatibility with biological molecules, efficient electron transfer upon biochemical reactions, loading of bio-reagent, and immobilization of biomolecules. Further, they are proficient in sensing diverse biological species and compounds like glucose (detection limit ≈0.18 nm), DNA (≈10 pm), cholesterol (≈1 µm), aptamer (≈0.8 pm), and also cancer cells (≈5 pm mL-1) making them a potential candidate for biological sensing functions. ICPs and their composites have been extensively exploited by researchers in the field of biosensors owing to these peculiarities; however, no consolidated literature on the usage of conducting polymer composites for biosensing functions is available. This review extensively elucidates on ICP composites and doped conjugated polymers for biosensing functions of copious biological species. In addition, a brief overview is provided on various forms of biosensors, their sensing mechanisms, and various methods of immobilizing biological species along with the life cycle assessment of biosensors for various biosensing applications, and their cost analysis.
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Affiliation(s)
- Deepak G. Prajapati
- Nano Texturing LaboratoryDepartment of Metallurgical and Materials EngineeringDefence Institute of Advanced TechnologyMinistry of DefenceGirinagarPune411025India
| | - Balasubramanian Kandasubramanian
- Nano Texturing LaboratoryDepartment of Metallurgical and Materials EngineeringDefence Institute of Advanced TechnologyMinistry of DefenceGirinagarPune411025India
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Dailey J, Fichera M, Silbergeld E, Katz H. Impedance Spectroscopic Detection of Binding and Reactions in Acid-Labile Dielectric Polymers for Biosensor Applications. J Mater Chem B 2018; 6:2972-2981. [PMID: 30345059 PMCID: PMC6191049 DOI: 10.1039/c7tb03171h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesized previously unreported copolymers with cleavable acid-labile side chains for use as electrochemical sensing layers in order to demonstrate a novel architecture for a one-step immunosensor. This one-step system is in contrast to most antigen-capture signal amplification methods that involve complicated secondary labeling techniques, or require the addition of redox probes to achieve a sensing response. A series of novel copolymers composed of various trityl-containing monomers were synthesized and characterized to determine their dielectric properties. Results indicate that the thin films of these polymers are stable in water, but some begin to degrade under acidic conditions or upon antigen binding, causing observable changes in the phase angle.
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Affiliation(s)
- Jennifer Dailey
- Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University
| | - Michelangelo Fichera
- Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University
| | - Ellen Silbergeld
- Department of Environmental Engineering, School of Public Health, Johns Hopkins University
| | - Howard Katz
- Department of Materials Science and Engineering, Whiting School of Engineering, Johns Hopkins University
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Kumar P, Kim KH, Vellingiri K, Samaddar P, Kumar P, Deep A, Kumar N. Hybrid porous thin films: Opportunities and challenges for sensing applications. Biosens Bioelectron 2018; 104:120-137. [DOI: 10.1016/j.bios.2018.01.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/25/2017] [Accepted: 01/03/2018] [Indexed: 10/18/2022]
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Khan MS, Misra SK, Dighe K, Wang Z, Schwartz-Duval AS, Sar D, Pan D. Electrically-receptive and thermally-responsive paper-based sensor chip for rapid detection of bacterial cells. Biosens Bioelectron 2018; 110:132-140. [PMID: 29605712 DOI: 10.1016/j.bios.2018.03.044] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 03/19/2018] [Indexed: 01/15/2023]
Abstract
Although significant technological advancements have been made in the development of analytical biosensor chips for detecting bacterial strains (E. coli, S. Mutans and B. Subtilis), critical requirements i.e. limit of detection (LOD), fast time of response, ultra-sensitivity with high reproducibility and good shelf-life with robust sensing capability have yet to be met within a single sensor chip. In order to achieve these criteria, we present an electrically-receptive thermally-responsive (ER-TR) sensor chip comprised of simple filter paper used as substrate coated with composite of poly(N-isopropylacrylamide) polymer (PNIPAm) - graphene nanoplatelet (GR) followed by evaporation of Au electrodes for capturing both Gram-positive (S. mutans and B. subtilis) and Gram-negative (E. coli) bacterial cells in real-time. Autoclave water, tap water, lake water and milk samples were tested with ER-TR chip with and without bacterial strains at varying concentration range 101-105 cells/mL. The sensor was integrated with in-house built printed circuit board (PCB) to transmit/receive electrical signals. The interaction of E. coli, S. mutans and B. subtilis cells with fibers of PNIPAm-GR resulted in a change of electrical resistance and the readout was monitored wirelessly in real-time using MATLAB algorithm. Finally, prepared ER-TR chip exhibited the reproducibility of 85-97% with shelf-life of up to four weeks after testing with lake water sample.
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Affiliation(s)
- Muhammad S Khan
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Biomedical Research Center, Carle Foundation Hospital, Urbana, IL, USA
| | - Santosh K Misra
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Biomedical Research Center, Carle Foundation Hospital, Urbana, IL, USA.
| | - Ketan Dighe
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Biomedical Research Center, Carle Foundation Hospital, Urbana, IL, USA
| | - Zhen Wang
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Biomedical Research Center, Carle Foundation Hospital, Urbana, IL, USA
| | - Aaron S Schwartz-Duval
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Biomedical Research Center, Carle Foundation Hospital, Urbana, IL, USA
| | - Dinabandhu Sar
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Biomedical Research Center, Carle Foundation Hospital, Urbana, IL, USA
| | - Dipanjan Pan
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Biomedical Research Center, Carle Foundation Hospital, Urbana, IL, USA; Beckman Institute for Advanced Science & Technology, University of Illinois at Urbana-Champaign, IL, USA; Department of Materials Science and Engineering, University of Illinois-Urbana Champaign, IL, USA; Carle Illinois College of Medicine, Urbana, IL 61801, USA.
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18
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Zhou F, Liu H. Direct Nanofabrication Using DNA Nanostructure. Methods Mol Biol 2017; 1500:217-235. [PMID: 27813011 DOI: 10.1007/978-1-4939-6454-3_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Recent advances in DNA nanotechnology make it possible to fabricate arbitrarily shaped 1D, 2D, and 3D DNA nanostructures through controlled folding and/or hierarchical assembly of up to several thousands of unique sequenced DNA strands. Both individual DNA nanostructures and their assembly can be made with almost arbitrarily shaped patterns at a theoretical resolution down to 2 nm. Furthermore, the deposition of DNA nanostructures on a substrate can be made with precise control of their location and orientation, making them ideal templates for bottom-up nanofabrication. However, many fabrication processes require harsh conditions, such as corrosive chemicals and high temperatures. It still remains a challenge to overcome the limited stability of DNA nanostructures during the fabrication process.This chapter focuses on the proof-of-principle study to directly convert the structural information of DNA nanostructure to various kinds of materials by nanofabrication.
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Affiliation(s)
- Feng Zhou
- Department of Chemistry, University of Pittsburgh, 201 Eberly Hall, Chevron Science Center, 219 Parkman Avenue, Pittsburgh, PA, 15260, USA
| | - Haitao Liu
- Department of Chemistry, University of Pittsburgh, 201 Eberly Hall, Chevron Science Center, 219 Parkman Avenue, Pittsburgh, PA, 15260, USA.
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Vigneshvar S, Sudhakumari CC, Senthilkumaran B, Prakash H. Recent Advances in Biosensor Technology for Potential Applications - An Overview. Front Bioeng Biotechnol 2016; 4:11. [PMID: 26909346 PMCID: PMC4754454 DOI: 10.3389/fbioe.2016.00011] [Citation(s) in RCA: 237] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 01/27/2016] [Indexed: 12/20/2022] Open
Abstract
Imperative utilization of biosensors has acquired paramount importance in the field of drug discovery, biomedicine, food safety standards, defense, security, and environmental monitoring. This has led to the invention of precise and powerful analytical tools using biological sensing element as biosensor. Glucometers utilizing the strategy of electrochemical detection of oxygen or hydrogen peroxide using immobilized glucose oxidase electrode seeded the discovery of biosensors. Recent advances in biological techniques and instrumentation involving fluorescence tag to nanomaterials have increased the sensitive limit of biosensors. Use of aptamers or nucleotides, affibodies, peptide arrays, and molecule imprinted polymers provide tools to develop innovative biosensors over classical methods. Integrated approaches provided a better perspective for developing specific and sensitive biosensors with high regenerative potentials. Various biosensors ranging from nanomaterials, polymers to microbes have wider potential applications. It is quite important to integrate multifaceted approaches to design biosensors that have the potential for diverse usage. In light of this, this review provides an overview of different types of biosensors being used ranging from electrochemical, fluorescence tagged, nanomaterials, silica or quartz, and microbes for various biomedical and environmental applications with future outlook of biosensor technology.
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Affiliation(s)
| | - C C Sudhakumari
- Department of Animal Biology, University of Hyderabad, Hyderabad, India; School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Balasubramanian Senthilkumaran
- Department of Animal Biology, University of Hyderabad, Hyderabad, India; School of Life Sciences, University of Hyderabad, Hyderabad, India
| | - Hridayesh Prakash
- School of Life Sciences, University of Hyderabad , Hyderabad , India
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20
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Surwade SP, Zhou F, Li Z, Powell A, O'Donnell C, Liu H. Nanoscale patterning of self-assembled monolayers using DNA nanostructure templates. Chem Commun (Camb) 2015; 52:1677-80. [PMID: 26661791 DOI: 10.1039/c5cc08183a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We describe a method to pattern arbitrary-shaped silane self-assembled monolayers (SAMs) with nm scale resolution using DNA nanostructures as templates. The DNA nanostructures assembled on a silicon substrate act as a soft-mask to negatively pattern SAMs. Mixed SAMs can be prepared by back filling the negative tone patterns with a different silane.
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Affiliation(s)
- S P Surwade
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, PA 15260, USA.
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21
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Meltzer C, Dietrich H, Zahn D, Peukert W, Braunschweig B. Self-Assembled Monolayers Get Their Final Finish via a Quasi-Langmuir-Blodgett Transfer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:4678-4685. [PMID: 25835342 DOI: 10.1021/acs.langmuir.5b00440] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The growth of self-assembled monolayers (SAMs) of octadecylphosphonic acid (ODPA) molecules on α-Al2O3(0001) and subsequent dewetting of the SAMs were studied with a combination of in situ sum-frequency generation (SFG) and molecular dynamics (MD) simulations. Although SAM growth after deposition times >8 h reduces to nearly negligible values, the resultant ODPA SAMs in solution are still not in a well-ordered state with the alkyl chains in all-trans configurations. In fact, in situ SFG spectroscopy revealed a comparatively high concentration of gauche defects of the SAM in the ODPA 2-propanol solution even after a growth time of 16 h. Here, results of the MD simulations strongly suggest that defects can be caused by ODPA molecules which are not attached to the substrate but are incorporated into the SAM layer with the polar headgroup oriented into the 2-propanol solvent. This inverted adsorption geometry of additional ODPA molecules blocks adsorption sites and thus stabilizes the SAM without improving ordering to an extent that all molecules are in the all-trans configuration. While persistent in solution, the observed defects can be healed out when the SAMs are transferred from the solvent to a gas phase. During this process, a quasi-Langmuir-Blodgett transfer of molecules takes place which drives the SAM into a higher conformational state and significantly improves its quality.
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Affiliation(s)
- Christian Meltzer
- †Institute of Particle Technology (LFG), ‡Erlangen Graduate School in Advanced Optical Technologies (SAOT), §Computer-Chemie-Centrum and Interdisciplinary Center for Molecular Materials, ∥Chair of Theoretical Chemistry, and ⊥Cluster of Excellence - Engineering of Advanced Materials (EAM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Hanno Dietrich
- †Institute of Particle Technology (LFG), ‡Erlangen Graduate School in Advanced Optical Technologies (SAOT), §Computer-Chemie-Centrum and Interdisciplinary Center for Molecular Materials, ∥Chair of Theoretical Chemistry, and ⊥Cluster of Excellence - Engineering of Advanced Materials (EAM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Dirk Zahn
- †Institute of Particle Technology (LFG), ‡Erlangen Graduate School in Advanced Optical Technologies (SAOT), §Computer-Chemie-Centrum and Interdisciplinary Center for Molecular Materials, ∥Chair of Theoretical Chemistry, and ⊥Cluster of Excellence - Engineering of Advanced Materials (EAM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Wolfgang Peukert
- †Institute of Particle Technology (LFG), ‡Erlangen Graduate School in Advanced Optical Technologies (SAOT), §Computer-Chemie-Centrum and Interdisciplinary Center for Molecular Materials, ∥Chair of Theoretical Chemistry, and ⊥Cluster of Excellence - Engineering of Advanced Materials (EAM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
| | - Björn Braunschweig
- †Institute of Particle Technology (LFG), ‡Erlangen Graduate School in Advanced Optical Technologies (SAOT), §Computer-Chemie-Centrum and Interdisciplinary Center for Molecular Materials, ∥Chair of Theoretical Chemistry, and ⊥Cluster of Excellence - Engineering of Advanced Materials (EAM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
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Huang W, Diallo AK, Dailey JL, Besar K, Katz HE. Electrochemical processes and mechanistic aspects of field-effect sensors for biomolecules. JOURNAL OF MATERIALS CHEMISTRY. C 2015; 3:6445-6470. [PMID: 29238595 PMCID: PMC5724786 DOI: 10.1039/c5tc00755k] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Electronic biosensing is a leading technology for determining concentrations of biomolecules. In some cases, the presence of an analyte molecule induces a measured change in current flow, while in other cases, a new potential difference is established. In the particular case of a field effect biosensor, the potential difference is monitored as a change in conductance elsewhere in the device, such as across a film of an underlying semiconductor. Often, the mechanisms that lead to these responses are not specifically determined. Because improved understanding of these mechanisms will lead to improved performance, it is important to highlight those studies where various mechanistic possibilities are investigated. This review explores a range of possible mechanistic contributions to field-effect biosensor signals. First, we define the field-effect biosensor and the chemical interactions that lead to the field effect, followed by a section on theoretical and mechanistic background. We then discuss materials used in field-effect biosensors and approaches to improving signals from field-effect biosensors. We specifically cover the biomolecule interactions that produce local electric fields, structures and processes at interfaces between bioanalyte solutions and electronic materials, semiconductors used in biochemical sensors, dielectric layers used in top-gated sensors, and mechanisms for converting the surface voltage change to higher signal/noise outputs in circuits.
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Affiliation(s)
- Weiguo Huang
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, 206 Maryland Hall, Baltimore, MD, USA
| | - Abdou Karim Diallo
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, 206 Maryland Hall, Baltimore, MD, USA
| | - Jennifer L Dailey
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, 206 Maryland Hall, Baltimore, MD, USA
| | - Kalpana Besar
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, 206 Maryland Hall, Baltimore, MD, USA
| | - Howard E Katz
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, 206 Maryland Hall, Baltimore, MD, USA
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Gozzi G, Cagnani LD, Faria RM, Santos LF. Phenomenological model for the interpretation of impedance/admittance spectroscopy results in polymer light-emitting electrochemical cells. J Solid State Electrochem 2014. [DOI: 10.1007/s10008-014-2547-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Mulvaney SP, Stine R, Long NC, Tamanaha CR, Sheehan PE. Graphene veils: A versatile surface chemistry for sensors. Biotechniques 2014; 57:21-30. [DOI: 10.2144/000114188] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 06/04/2014] [Indexed: 11/23/2022] Open
Abstract
Thin spun-coat films (∼4 nm thick) of graphene oxide (GO) constitute a versatile surface chemistry compatible with a broad range of technologically important sensor materials. Countless publications are dedicated to the nuances of surface chemistries that have been developed for sensors, with almost every material having unique characteristics. There would be enormous value in a surface chemistry that could be applied generally with functionalization and passivation already optimized regardless of the sensor material it covered. Such a film would need to be thin, conformal, and allow for multiple routes toward covalent linkages. It is also vital that the film permit the underlying sensor to transduce. Here we show that GO films can be applied over a diverse set of sensor surfaces, can link biomolecules through multiple reaction pathways, and can support cell growth. Application of a graphene veil atop a magnetic sensor array is demonstrated with an immunoassay. We also present biosensing and material characterization data for these graphene veils.
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Mikuła E, Wysłouch-Cieszyńska A, Zhukova L, Puchalska M, Verwilst P, Dehaen W, Radecki J, Radecka H. Voltammetric detection of S100B protein using His-tagged receptor domains for advanced glycation end products (RAGE) immobilized onto a gold electrode surface. SENSORS 2014; 14:10650-63. [PMID: 24940866 PMCID: PMC4118347 DOI: 10.3390/s140610650] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 05/15/2014] [Accepted: 05/26/2014] [Indexed: 11/16/2022]
Abstract
In this work we report on an electrochemical biosensor for the determination of the S100B protein. The His-tagged VC1 domains of Receptors for Advanced Glycation End (RAGE) products used as analytically active molecules were covalently immobilized on a monolayer of a thiol derivative of pentetic acid (DPTA) complex with Cu(II) deposited on a gold electrode surface. The recognition processes between the RAGE VC1 domain and the S100B protein results in changes in the redox activity of the DPTA-Cu(II) centres which were measured by Osteryoung square-wave voltammetry (OSWV). In order to verify whether the observed analytical signal originates from the recognition process between the His6–RAGE VC1 domains and the S100B protein, the electrode modified with the His6–RAGE C2 and His6–RAGE VC1 deleted domains which have no ability to bind S100B peptides were applied. The proposed biosensor was quite sensitive, with a detection limit of 0.52 pM recorded in the buffer solution. The presence of diluted human plasma and 10 nM Aβ1-40 have no influence on the biosensor performance.
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Affiliation(s)
- Edyta Mikuła
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland.
| | | | - Liliya Zhukova
- Institute of Biochemistry and Biophysics of Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland.
| | - Monika Puchalska
- Institute of Biochemistry and Biophysics of Polish Academy of Sciences, Pawińskiego 5a, 02-106 Warsaw, Poland.
| | - Peter Verwilst
- Chemistry Department, University of Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Wim Dehaen
- Chemistry Department, University of Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Jerzy Radecki
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland.
| | - Hanna Radecka
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland.
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Hauser CAE, Maurer-Stroh S, Martins IC. Amyloid-based nanosensors and nanodevices. Chem Soc Rev 2014; 43:5326-45. [DOI: 10.1039/c4cs00082j] [Citation(s) in RCA: 132] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Meillan M, Ramin MA, Buffeteau T, Marsaudon S, Odorico M, Chen SWW, Pellequer JL, Degueil M, Heuzé K, Vellutini L, Bennetau B. Self-assembled monolayer for AFM measurements of Tobacco Mosaic Virus (TMV) at the atomic level. RSC Adv 2014. [DOI: 10.1039/c3ra46716c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Mikuła E, Sulima M, Marszałek I, Wysłouch-Cieszyńska A, Verwilst P, Dehaen W, Radecki J, Radecka H. Oriented immobilization of His-tagged protein on a redox active thiol derivative of DPTA-Cu(II) layer deposited on a gold electrode--the base of electrochemical biosensors. SENSORS 2013; 13:11586-602. [PMID: 24005034 PMCID: PMC3821307 DOI: 10.3390/s130911586] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 08/19/2013] [Accepted: 08/27/2013] [Indexed: 12/26/2022]
Abstract
This paper concerns the development of an electrochemical biosensor for the determination of Aβ16–23′ and Aβ1–40 peptides. The His-tagged V and VC1 domains of Receptor for Advanced Glycation end Products (RAGE) immobilized on a gold electrode surface were used as analytically active molecules. The immobilization of His6–RAGE domains consists of: (i) formation of a mixed layer of N-acetylcysteamine (NAC) and the thiol derivative of pentetic acid (DPTA); (ii) complexation of Cu(II) by DPTA; (iii) oriented immobilization of His6–RAGE domains via coordination bonds between Cu(II) sites from DPTA–Cu(II) complex and imidazole nitrogen atoms of a histidine tag. Each modification step was controlled by cyclic voltammetry (CV), Osteryoung square-wave voltammetry (OSWV), and atomic force microscopy (AFM). The applicability of the proposed biosensor was tested in the presence of human plasma, which had no influence on its performance. The detection limits for Aβ1–40 determination were 1.06 nM and 0.80 nM, in the presence of buffer and human plasma, respectively. These values reach the concentration level of Aβ1–40 which is relevant for determination of its soluble form in human plasma, as well as in brain. This indicates the promising future application of biosensor presented for early diagnosis of neurodegenerative diseases.
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Affiliation(s)
- Edyta Mikuła
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima 10, Olsztyn 10-748, Poland; E-Mails: (E.M.); (J.R.)
| | - Magdalena Sulima
- Institute of Biochemistry and Biophysics of Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland; E-Mails: (M.S.); (I.M.); (A.W.-C.)
| | - Ilona Marszałek
- Institute of Biochemistry and Biophysics of Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland; E-Mails: (M.S.); (I.M.); (A.W.-C.)
| | - Aleksandra Wysłouch-Cieszyńska
- Institute of Biochemistry and Biophysics of Polish Academy of Sciences, Pawińskiego 5a, Warsaw 02-106, Poland; E-Mails: (M.S.); (I.M.); (A.W.-C.)
| | - Peter Verwilst
- Chemistry Department, University of Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium; E-Mails: (P.V.); (W.D.)
| | - Wim Dehaen
- Chemistry Department, University of Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium; E-Mails: (P.V.); (W.D.)
| | - Jerzy Radecki
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima 10, Olsztyn 10-748, Poland; E-Mails: (E.M.); (J.R.)
| | - Hanna Radecka
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Tuwima 10, Olsztyn 10-748, Poland; E-Mails: (E.M.); (J.R.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +48-89-523-4636; Fax: +48-89-524-0124
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An ultrasensitive electrochemiluminescence immunoassay for carbohydrate antigen 19-9 in serum based on antibody labeled Fe3O4 nanoparticles as capture probes and graphene/CdTe quantum dot bionanoconjugates as signal amplifiers. Int J Mol Sci 2013; 14:10397-411. [PMID: 23685872 PMCID: PMC3676846 DOI: 10.3390/ijms140510397] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Revised: 05/02/2013] [Accepted: 05/06/2013] [Indexed: 11/25/2022] Open
Abstract
The CdTe quantum dots (QDs), graphene nanocomposite (CdTe-G) and dextran–Fe3O4 magnetic nanoparticles have been synthesized for developing an ultrasensitive electrochemiluminescence (ECL) immunoassay for Carcinoembryonic antigen 19-9 (CA 19-9) in serums. Firstly, the capture probes (CA 19-9 Ab1/Fe3O4) for enriching CA 19-9 were synthesized by immobilizing the CA 19-9’s first antibody (CA 19-9 Ab1) on magnetic nanoparticles (dextran-Fe3O4). Secondly, the signal probes (CA 19-9 Ab2/CdTe-G), which can emit an ECL signal, were formed by attaching the secondary CA 19-9 antibody (CA 19-9 Ab2) to the surface of the CdTe-G. Thirdly, the above two probes were used for conjugating with a serial of CA 19-9 concentrations. Graphene can immobilize dozens of CdTe QDs on their surface, which can emit stronger ECL intensity than CdTe QDs. Based on the amplified signal, ultrasensitive antigen detection can be realized. Under the optimal conditions, the ECL signal depended linearly on the logarithm of CA 19-9 concentration from 0.005 to 100 pg/mL, and the detection limit was 0.002 pg/mL. Finally, five samples of human serum were tested, and the results were compared with a time-resolved fluorescence assay (TRFA). The novel immunoassay provides a stable, specific and highly sensitive immunoassay protocol for tumor marker detection at very low levels, which can be applied in early diagnosis of tumor.
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30
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Hybridization detection of enzyme-labeled DNA at electrically heated electrodes. Anal Bioanal Chem 2013; 405:3907-11. [DOI: 10.1007/s00216-013-6815-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 01/11/2013] [Accepted: 02/01/2013] [Indexed: 10/27/2022]
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